Stitching instrument for stitching endoscope puncture hole

Abstract

The utility model discloses a stitching instrument for stitching an endoscope puncture hole. The stitching instrument comprises a handle part and two operating rods which are assembled on the handle part in a rotatable structure, the lower ends of the two operating rods are respectively provided with a convex needle connecting part, and the lower ends of the two operating rods extend out of the guide cylinder of the handle part; in the rotating action of the two operating rods, the needle connecting parts at the lower ends of the two operating rods are folded or unfolded; when the needle connecting parts of the two operating rods are in a folded state, the guide cylinder located at the handle part is in an axial storage coverage range of a trocar channel through which the guide cylinder needs to penetrate during surgical operation; the lower end of each operating rod is provided with a needle mounting base formed in an outward protruding mode, the needle mounting bases are connected with suture needles through detachable structures, and the suture needles are connected to the needle mounting bases in place to form an inflection assembly structure facing the handle part. According to the stitching instrument, the stitching operation is simplified, the stitching safety, flexibility and efficiency are improved, the forming structure of the stitching instrument is simplified, and the practicability is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical apparatus and instruments, concretely is a kind of suture used for suturing endoscope puncture hole in operation. BACKGROUND

[0002] After endoscopic surgery is completed, the puncture hole needs to be closed, that is, the puncture hole is sutured.

[0003] The applicant designs a suture that is effective for suturing endoscope puncture holes based on the particularity of endoscopic puncture and years of clinical experience. See the Chinese patent documents with the title "Endoscope Puncture Hole Suture" and the publication number CN117562600A, published on February 20, 2024, the title "Endoscope Puncture Hole Suture" and the publication number CN117530736A, published on February 9, 2024, and the title "Suture for Suturing Laparoscopic Surgery Puncture Hole" and the publication number CN212939830U, published on April 13, 2021. These sutures each have a handle and two operating rods, as well as necessary suturing threads. Specifically, a guide cylinder with a hollow cylindrical structure is formed on the bottom side of the middle part of the handle. The guide cylinder can freely pass through the puncture card channel at the puncture hole during endoscope puncture hole suturing and form an air leakage prevention cooperation. The upper end of each operating rod has a rotating operating part, and the lower end is formed with a suture needle in a U-shaped backfolding structure. The two operating rods are rotatably assembled on the handle. The rotating operating part of the operating rod is on the top side of the handle, and the lower end of the operating rod and the connected suture needle extend out of the guide cylinder of the handle. In the separate or synchronous rotating action of the two operating rods, the suture needles at the lower ends of the two operating rods are retracted or expanded. When the suture needles of the two operating rods are in the retracted state, the guide cylinder of the handle is axially accommodated and covered within the puncture card channel to be passed through during surgical operation, so as to perform the action of passing through the puncture card channel together with the guide cylinder of the handle at the puncture hole. When the suture needles of the two operating rods are in the expanded state, the guide cylinder of the handle is on the periphery of the puncture card channel to be passed through during surgical operation, so as to perform the action of suturing the needle on the human tissue outside the puncture hole with the suture thread under the driving of the handle.

[0004] The above-mentioned three types of sutures each have a suture needle integrally formed at the lower end of the operating rod in a U-shaped backfolding structure, and the two are inseparable. In the endoscope puncture hole suturing operation, the following operation process is performed:

[0005] Step 1. Rotate the two operating rods outside the patient's body to make the suture needles of the two operating rods in the retracted state.

[0006] Step 2. Hold the handle, pass the suture of step 1 through the puncture card channel, and completely push the suture needle into the patient's body cavity.

[0007] Step 3. Rotate the two operating rods so that the suture needles of the two operating rods are in an unfolded state;

[0008] Step 4. According to the set suture position, pull out the handle part of the suture device, and under the action of the handle part, the suture needles of the two operating rods are pierced out of the human tissue around the puncture hole and the suture thread is taken out of the patient's body;

[0009] Step 5. Keep the thread ends of the suture threads taken out by the two suture needles outside the patient's body so as to take up the thread and tie a knot after all the instruments are withdrawn from the puncture hole;

[0010] Step 6. Push the handle part of the suture device inward at the current suture needle insertion site, and under the action of the handle part, the suture needles of the two operating rods are withdrawn from the human tissue in the patient's body;

[0011] Step 7. Rotate the two operating rods so that the suture needles of the two operating rods are in a folded state;

[0012] Step 8. Pull out the handle part of the suture device to withdraw the suture device out of the patient's body and complete the suture needle insertion of the puncture hole.

[0013] As can be clearly seen from the above operation process, the suture needles are integrally formed in a U-shaped backfolding structure on the operating rods, and there is certainly a needle withdrawal operation in the suture process, i.e. the "pushing the handle part of the suture device inward, and under the action of the handle part, the suture needles of the two operating rods are withdrawn from the human tissue in the patient's body" described in Step 6. Therefore, the needle collection after suture must be preceded by needle withdrawal, which will cause the following technical problems:

[0014] 1. The needle withdrawal link increases the suture operation, making the suture operation troublesome and reducing the suture efficiency;

[0015] 2. The suture needles withdrawn into the patient's body are easy to injure the human tissue during the withdrawal process and the folding process;

[0016] 3. Since the suture needles are usually thin steel needles, during the suture needle insertion and withdrawal process, due to factors such as the limitation of the human tissue on the position of the suture needles and the matching of the outward pulling force and the non-axial direction of the suture needles, the suture needles are easy to twist and deform, so that the suture needles cannot be folded or are folded beyond the axial storage coverage range of the guide cylinder of the handle part in the stent channel to be passed through during the surgical operation, resulting in that the suture device is difficult to be directly withdrawn from the patient's body, and additional needle collection operation is needed, which increases the technical difficulty of the operation of withdrawing the suture device from the patient's body. This is the reason why the folding device is provided in the technologies disclosed in CN 117562600 A and CN 117530736 A, which complicates the forming structure and operation process of the suture device;

[0017] 4. In order to make the suture needle easy to exit through the trocar channel after being folded, the U-shaped bending gap of the suture needle on the operating rod is relatively small when the puncture hole is sutured with a small diameter, so that the margin of the human tissue around the puncture hole during the suture needle process is relatively small, resulting in less suture tissue, affecting the reliability of the suture.

[0018] Therefore, the above-mentioned double operating rod suture device needs to be improved and perfected. The utility model discloses a suture device for endoscopic puncture hole suture

[0019] The utility model discloses a suture device for endoscopic puncture hole suture, which is simple to operate, safe, flexible and efficient.

[0020] The utility model discloses a suture device for endoscopic puncture hole suture, which is simple to operate, safe, flexible and efficient.

[0021] The lower end of the two operating rods is provided with an outwardly convex needle connecting part, and the lower end of the two operating rods extends out of the guide cylinder of the handle part.

[0022] In the separate or synchronous rotating action of the two operating rods, the needle connecting parts at the lower end of the two operating rods are folded or unfolded.

[0023] At the lower end of each operating rod, an outwardly convex needle mounting base is formed, and the needle mounting base is detachably connected with a suture needle.

[0024] During the endoscopic puncture hole suture operation, the suture needle mounted on the corresponding operating rod penetrates into the endoscopic puncture hole together with the operating rod and performs suture needle penetration at the puncture hole under the driving of the handle part.

[0025] When the suture needle penetration at the puncture hole is completed, the suture needle can be separated from the needle mounting base of the corresponding operating rod and independently penetrate out of the human tissue.

[0026] The above technical measures are aimed at the particularity of the above-mentioned double operating rod suture device. A needle mounting base is formed at the lower end of the operating rod. The suture needle is detachably assembled and connected through the needle mounting base. That is, under the assembly and connection of the needle mounting base, the suture needle achieves a U-shaped folding effect on the corresponding operating rod, and the forming structure of the suture needle and the corresponding operating rod is separated. In this way, when the suture device enters the patient's body and the suture needle is pulled outwards, it is basically the same as the above-mentioned disclosed suture device, but after the suture needle is completed, the suture needle can be pulled out of the patient's body separately under the suture needle state by detaching the suture needle from the corresponding needle mounting base, without the need to retract into the patient's body by pushing the handle part. Effectively eliminate a series of technical problems caused by the necessity of retracting into the patient's body due to the integration of the suture needle and the operating rod, which is beneficial to simplify the suture operation, improve the safety, flexibility and efficiency of the suture, and simplify the forming structure of the suture device, especially the removal of the collection device in the technical field of CN 117562600 A and CN 117530736 A.

[0027] As one of the preferred technical solutions, the operating rod has at least a hollow section, and the hollow section of the operating rod penetrates through the corresponding needle mounting base;

[0028] The needle mounting base has a needle mounting hole with an inner recess structure, and the hole of the hollow section of the operating rod leads to the needle mounting hole on the needle mounting base;

[0029] Correspondingly, the suture device also has a guide wire needle locking mechanism, which has at least a guide wire;

[0030] The guide wire is arranged in the hollow hole of the corresponding operating rod, and the lower end of the guide wire extends to the needle mounting hole of the corresponding needle mounting base, and the upper end of the guide wire extends out of the handle part directly or indirectly;

[0031] The guide wire is connected with a pre-tightening structure for axially pressing the guide wire;

[0032] In the initial state, the axial pressing pre-tightening structure connected with the guide wire forms an axial pressing pre-tightening on the guide wire, so that the lower end of the guide wire extends into the needle mounting hole of the corresponding needle mounting base, and abuts and limits the suture needle inserted into the needle mounting hole;

[0033] When the needle locking state is released, the axial pressing pre-tightening structure connected with the guide wire is lifted, so that the lower end of the guide wire exits the needle mounting hole of the corresponding needle mounting base.

[0034] Further, the guide wire needle locking mechanism also has a tension spring one for forming an axial pressing in the direction of the lower end of the guide wire in the operating rod;

[0035] The tension spring is sleeved in the wire threading structure, the wire has a radial outward protruding limiting boss, the wire threading opposite structure has a fixed limiting structure at the upstream of the limiting boss, the lower end of the tension spring is in abutment with the limiting boss, and the upper end of the tension spring is in abutment with the fixed limiting structure on the wire threading opposite structure.

[0036] In the initial state, the lower end of the wire pressed downward by the tension spring is inserted into the needle mounting hole of the corresponding needle base, and the suture needle mounted in the needle mounting hole is in abutment and limited.

[0037] In the needle releasing state, the wire is pulled upward from the handle, and the lower end of the wire is withdrawn from the needle mounting hole of the corresponding needle base.

[0038] Further, the fixed limiting structure on the wire threading opposite structure is a limiting nut threadedly connected to the wire threading opposite structure, and the limiting nut has an inner hole for the wire to pass through.

[0039] The upper end of the tension spring is in abutment with the limiting nut.

[0040] The above technical measures, through the controllable wire needle locking mechanism combined in the operating rod, abut and limit the suture needle mounted on the needle base, enhance the stability of the suture needle assembled on the needle base, and prevent the suture needle from falling off the needle base. Meanwhile, through the controllable releasing operation of the wire needle locking mechanism, the suture needle can be separated from the corresponding needle base to achieve the technical purpose of the suture needle being pulled out of the patient's body alone.

[0041] In the above technical measures, the installation of the tension spring on the wire threading opposite structure (such as the steering base or the wire locking segment of the operating rod) and the cooperation with the limiting nut facilitate assembly and ensure that the wire under the action of the tension spring can stably abut and limit the suture needle.

[0042] Further, the upper part of the operating rod is a bent structure, the operating rod has a horizontal segment and a vertical segment, the horizontal segment of the operating rod radially penetrates out of the steering base of the handle and is connected with the steering drive ring sleeved on the outer periphery of the steering base.

[0043] The vertical segment of the operating rod extends out of the guide cylinder of the handle, the vertical segment of the operating rod is a hollow structure and has a hollow hole for threading the wire.

[0044] The upper end of the wire extends axially out of the steering base of the handle.

[0045] The guide wire is connected with an axial downward pressing pre-tightening structure, which is assembled at the steering base.

[0046] Further, the transition between the horizontal section and the vertical section of the operating rod has a hollow locking wire section extending along the axial protrusion of the vertical section, and the hollow channel of the locking wire section communicates with the hollow channel of the vertical section of the operating rod.

[0047] In the assembly structure of the steering base of the handle part, the locking wire section of the operating rod is arranged axially or extends out of the steering base.

[0048] The guide wire is arranged in the hollow channel of the vertical section of the operating rod, and the upper end of the guide wire extends out of the locking wire section of the operating rod directly or indirectly, and the axial downward pressing pre-tightening structure connected with the guide wire is assembled in the hollow channel of the locking wire section and is not fixedly connected with the steering base.

[0049] The above technical measures are effectively adapted to the technologies disclosed in CN 117562600 A and CN 117530736 A, that is, the guide wire locking needle mechanism is effectively combined in the operating rod of the steering mechanism without affecting the synchronous rotation driving structure of the two operating rods by the steering driving ring, and the steering mechanism and the guide wire locking needle mechanism perform their respective functions without interfering with each other.

[0050] Moreover, in the above technical measures, the locking wire section that cooperates with the vertical section is additionally arranged at the transition between the horizontal section and the vertical section of the operating rod, the hollow channel of the locking wire section is used as the arrangement basis of the tension spring and the limiting nut, and the locking wire section is not fixedly connected with the steering base, so that the guide wire rotates integrally with the operating rod during the rotation of the operating rod, thereby solving the technical problem that the upper rotation torque increases and the operation is not flexible if the axial downward pressing pre-tightening structure (i.e., the tension spring and the limiting nut) of the guide wire is connected on the steering base and the lower part of the guide wire must cooperate with the rotation of the operating rod.

[0051] To adapt to small structural size forming, on the basis of the above technical solutions, the locking wire section on the operating rod further forms an inclined bending structure at the upper end of the vertical section.

[0052] In the assembly structure of the steering base of the handle part, the locking wire section of the operating rod extends out of the steering base and is at the top of the steering base, or the locking wire section of the operating rod is inside the steering base, but the steering base is a hollow structure that allows the operating rod to rotate and serves as the part for arranging the locking wire section.

[0053] The locking wire sections of the two operating rods are arranged in a diverging structure at the assembly of the steering base.

[0054] The operation rod of the above-mentioned wire locking section inclined bending structure effectively increases the arrangement space of the guide wire locking needle mechanism in the handle part by forming a bifurcated assembly that moves away from each other at the assembly of the turning base, without affecting the rotation of the operation rod in the handle part for needle retraction and expansion operation, which is beneficial to the assembly and formation of the guide wire locking needle mechanism, reduces the position interference of the two operation rods and the corresponding guide wire locking needle mechanism during operation in the handle part, and is beneficial to the miniaturization of the diameter structure of the formed suturing device to meet the puncture suturing of small size (such as diameter 5mm) punch card channel.

[0055] As an alternative to the above-mentioned operation rod with a transverse section, the upper part of the operation rod is a vertical structure or an inclined bending structure, the upper end of the operation rod extends axially out of the turning base of the handle part, and the upper end of the operation rod extending out of the turning base is used as a driving rotation;

[0056] The operation rod is a hollow structure with a hollow channel for installing a guide wire;

[0057] The guide wire installed in the hollow channel of the operation rod extends axially out of the upper end of the operation rod directly or indirectly, and the axially downward pre-tightening structure connected by the guide wire is assembled in the upper end hollow channel of the operation rod and is non-fixedly matched with the turning base;

[0058] When the upper part of the operation rod is an inclined bending structure, in the assembly structure with the turning base of the handle part, the upper part of the operation rod protrudes out of the turning base, and the upper parts of the two operation rods form a bifurcated arrangement structure that moves away from each other at the turning base.

[0059] The above-mentioned technical measures are effectively adapted to the modification of the technology disclosed in CN 212939830 U.

[0060] In the above-mentioned technical measures, when the upper part of the operation rod forms an inclined bending structure, the bifurcated assembly that moves away from each other at the assembly of the turning base effectively increases the arrangement space of the guide wire locking needle mechanism in the handle part without affecting the rotation of the operation rod in the handle part for needle retraction and expansion operation, which is beneficial to the assembly and formation of the guide wire locking needle mechanism, reduces the position interference of the two operation rods and the corresponding guide wire locking needle mechanism during operation in the handle part, and is beneficial to the miniaturization of the diameter structure of the formed suturing device to meet the puncture suturing of small size (such as diameter 5mm) punch card channel.

[0061] Further, the guide wire extending out of the upper end of the guide wire installation opposite structure has a protruding structure and / or a friction increasing structure for pulling the guide wire. This technical measure is beneficial to the unlocking action of the guide wire locking needle mechanism in the handle part and is easy to operate.

[0062] Alternatively, as an alternative to the guide wire locking needle mechanism control, the upper end of the guide wire is connected with a guide wire handle in a ball hinge structure;

[0063] The lower part of the guide wire handle is connected with the guide wire threading opposite structure in a threaded structure, and the upper part of the guide wire handle extends out of the guide wire threading opposite structure in an axial direction;

[0064] The guide wire handle that is screwed in the guide wire threading opposite structure presses down the threading structure of the guide wire in the operating rod;

[0065] The guide wire handle that is screwed out of the guide wire threading opposite structure lifts up the threading structure of the guide wire in the operating rod.

[0066] The above technical measures make the upper end of the guide wire extend out of the guide wire threading opposite structure in an indirect structure, and the guide wire can be directly pressed in an axial direction by adjusting the thread of the guide wire handle, so that the tension spring and the limiting nut can be removed.

[0067] In addition, the above technical measures make the upper end of the guide wire be movably connected with the guide wire handle in a ball hinge structure, and the two can be arbitrarily rotated in a circumferential direction, so that the guide wire handle is not picky about being connected to the operating rod or the steering base in a threaded structure, and the rotation of the operating rod during rotation will not affect the follow-up rotation of the guide wire. That is, when the guide wire handle is connected to the steering base in a threaded structure, due to the flexible steering of the ball hinge structure, the rotation of the operating rod can make the guide wire rotate, and the fixed structure of the guide wire handle basically does not affect it.

[0068] Alternatively, as another alternative to the guide wire locking needle mechanism control, the upper end of the guide wire is connected with a guide wire pressing lever in a hinged structure;

[0069] The middle part of the guide wire pressing lever is hinged to a hinge base at the guide wire threading opposite structure;

[0070] The guide wire pressing lever lifts up the threading structure of the guide wire in the operating rod with the hinge base as a fulcrum.

[0071] The above technical measures use the lever principle to lift and pull the guide wire in the operating rod, which is light and convenient on the one hand, and can effectively solve the technical problem of inconvenient operation caused by the too compact arrangement structure between the two operating rods, which is equivalent to the bifurcated extension of the two compactly arranged guide wires by the guide wire pressing lever, which is easy to operate.

[0072] Further, the suture needle is used as a needle tail part inserted into the needle mounting hole of the needle mounting base, and has an inner recess structure limiting groove and / or a non-smooth friction increasing structure for limiting the guide wire.

[0073] After the suture needle is inserted into the needle accommodating hole of the needle accommodating base, the lower end of the guide wire abuts against the limiting groove and / or the friction increasing structure of the tail of the suture needle.

[0074] Further, the suture needle is used as the limiting groove part for cooperating with the guide wire, which is a variable diameter structure with annular concave.

[0075] The suture needle with the above technical measures can form stable abutment limiting with the guide wire of the guide wire and needle locking mechanism in the needle accommodating hole of the needle accommodating base, and is not prone to non-technical requirements of shifting position and falling. Moreover, the limiting groove formed by the annular concave variable diameter structure is not picky about the insertion angle, that is, the suture needle can be inserted at any angle in the circumferential direction to form abutment limiting, which is more flexible than a single orientation limiting groove.

[0076] As one of the preferred technical solutions, the needle accommodating base of the operating rod has a needle accommodating hole with an inner recess structure;

[0077] The needle accommodating base has an elastic pin hole leading to the needle accommodating hole;

[0078] Correspondingly, the suture device also has a spring pin needle locking mechanism, which has a pin head assembled in the elastic pin hole and a tension spring, and the tension spring abuts between the pin head and the inner end of the elastic pin hole;

[0079] In the initial state, the outer end of the pin head axially pushed by the tension spring extends into the needle accommodating hole to abut and limit the suture needle inserted into the needle accommodating hole.

[0080] Alternatively, the needle accommodating base of the operating rod has a needle accommodating hole with an inner recess structure;

[0081] The operating rod has an elastic pin hole leading to the needle accommodating hole above the needle accommodating base;

[0082] Correspondingly, the suture device also has a spring pin needle locking mechanism, which has a pin head assembled in the elastic pin hole and a tension spring, and the tension spring abuts between the pin head and the inner end of the elastic pin hole, and the pin head is a long pin structure or an elongated guide wire structure;

[0083] In the initial state, the outer end of the pin head axially pushed by the tension spring extends into the needle accommodating hole to abut and limit the suture needle inserted into the needle accommodating hole.

[0084] Further, the needle accommodating hole on the needle accommodating base has a circular hole structure in cross section;

[0085] The pin head of the spring pin needle locking mechanism extends into the needle accommodating hole in a spherical crown surface structure;

[0086] The suture needle is used as a needle tail part inserted into the needle mounting hole of the needle mounting base, and has a limiting groove with a concave structure at least at a part of the circumference to match the pin head. The remaining part of the circumference of the limiting groove is a cylindrical structure matching the needle mounting hole;

[0087] After the suture needle is inserted into the needle mounting hole of the needle mounting base, the pin head of the spring pin locking needle mechanism abuts against the limiting groove of the suture needle tail part in a spherical cap surface structure.

[0088] In the state of releasing the needle locking, the suture needle is rotated circumferentially in the needle mounting hole so that the pin head is extruded out of the needle mounting hole.

[0089] The above technical measures use a spring pin locking needle mechanism with elastic extension and contraction to abut and limit the suture needle inserted into the needle mounting base, so as to enhance the stability of the assembly of the suture needle on the needle mounting base and prevent the suture needle from falling off the needle mounting base. Meanwhile, by rotating or pulling out the suture needle in the needle mounting hole, the pin head of the spring pin locking needle mechanism is axially pushed and retracted, so as to release the abutment and limitation of the suture needle in the needle mounting hole, and make the suture needle and the corresponding needle mounting base be separated, thereby achieving the technical purpose that the suture needle is pulled out of the patient's body alone.

[0090] As one of the preferred technical solutions, the suture needle is provided with a threading hole adjacent to the part of the needle mounting hole on the corresponding needle mounting base.

[0091] The threading hole is formed in the non-middle region of the suture needle in the height direction.

[0092] The end surface of the needle tail part of the suture needle is a smooth curved surface structure.

[0093] The above technical measures of the suture needle form a state that the needle tip part is downward and the needle tail part is upward under the hanging of the suture thread threaded through the threading hole, so that when the suture needle uncontrollably separates from the corresponding needle mounting base in the suture operation, the suture needle is pulled by the suture thread, and the needle tail part with better safety is used as the front end to be pulled out, so that the suture needle is safely and smoothly pulled out of the puncture hole, thereby improving the safety under uncontrollable factors.

[0094] As one of the preferred technical solutions, the outer contour of the needle mounting base is a rounded corner and / or curved surface structure without sharp corners.

[0095] The part of the needle mounting base used to form the needle mounting hole is a slope structure with a low outer edge and a high inner side.

[0096] The bottom end of the needle mounting base is a spherical cap surface structure.

[0097] The aforementioned technical measures facilitate the retraction of the operating rod within the puncture channel through which the guide tube passes. Even when the operating rod deforms, the pressure exerted by the bottom end of the puncture channel through which the guide tube passes on the top inclined structure of the needle base ensures that the needle base of the operating rod is reliably retracted. Secondly, they enhance the safety of the suture device during entry into the patient's body and during operation. Specifically, the needle base extends into the puncture channel with its bottom spherical crown surface as the front end, which not only facilitates passage through the air-proof membrane within the puncture channel but also effectively avoids damage to the air-proof membrane. Furthermore, when entering the patient's body, the blunt structure of the bottom spherical crown surface of the needle base contacts the patient's tissues, preventing scratches.

[0098] The beneficial technical effects of this utility model are as follows: Addressing the unique characteristics of the aforementioned dual-operating-rod suture device, a needle-loading base is formed at the lower end of the operating rod. The suture needle is detachably assembled and connected via this base, allowing the suture needle to achieve a U-shaped fold on the corresponding operating rod. Simultaneously, the forming structure of the suture needle and the corresponding operating rod are separated. In laparoscopic puncture hole suturing operations, the suture device with the above-mentioned technical measures can operate according to the following process:

[0099] Step 1. In the patient's external environment, first assemble the suture needle with suture thread into place on the needle mounting base of the corresponding operating lever;

[0100] Then rotate the two levers to bring the suture needles of the two levers into a closed state;

[0101] Step 2. Hold the handle and pass the front of the suture device from Step 1 through the puncture channel, so that the suture needle is fully pushed into the patient's body cavity;

[0102] Step 3. Rotate the two levers to extend the suture needles on both levers;

[0103] Step 4. According to the set suture position, pull the handle of the suture device outward. Driven by the handle, the suture needles of the two operating rods pass through the human tissue around the puncture hole.

[0104] Step 5. Release the limiting connection of the suture needle on the needle holder;

[0105] Pull the suture needle directly out of the patient's body (the point of force for pulling is the part of the suture needle that has pierced through the human tissue), leaving the end of the suture thread outside the patient's body so that it can be pulled up and knotted after all instruments in the puncture hole have been removed;

[0106] Step 6. Rotate the two operating levers to bring the needle loading bases of the two operating levers into the retracted state;

[0107] Step 7. Pull out the handle part of the suture needle, and withdraw the suture needle to the outside of the patient's body to complete the suture of the puncture hole.

[0108] Compared with the operation process of the above-mentioned technologies disclosed in CN 117562600 A, CN 117530736 A and CN 212939830 U, in the suture process, as the suture needle is separated from the corresponding needle mounting base, there is no need to "push the handle part of the suture needle inward, and under the driving of the handle part, the suture needle of the two operating rods is withdrawn from the human tissue in the patient's body". Therefore, the suture needle in the suture needle state can be pulled out of the patient's body alone, without the need to be withdrawn into the patient's body by the inward push of the handle part.

[0109] Therefore, the above-mentioned technical measures have the following main technical advantages:

[0110] 1. The needle withdrawal process in the suture operation is reduced, making the suture process simple and fast, which is beneficial to improve the suture efficiency;

[0111] 2. The suture needle after suture needle does not need to be withdrawn into the patient's body, but is directly pulled out, thereby effectively avoiding the injury to the human tissue in the process of withdrawing the suture needle from the human tissue and out of the body;

[0112] 3. The suture needle is directly pulled out of the patient's body after suture needle, and the suture needle does not pass through the puncture channel to be withdrawn into the body. Even if the suture needle is twisted and deformed during the suture needle process, it does not affect the withdrawal of the suture needle from the patient's body. Therefore, the withdrawal operation of the suture needle from the patient's body is fast and easy. Moreover, in use, once the suture needle is twisted and deformed, the suture needle can be directly replaced for repeated use of the suture needle, which is more economical than the deformation and scrapping of the suture needle and the operating rod integrated structure;

[0113] 4. The suture needle is directly pulled out of the patient's body after suture needle, without the need for needle retraction operation of the needle tip of the suture needle after needle withdrawal, which can effectively remove the folding device in the technologies disclosed in CN 117562600 A and CN 117530736 A, so as to simplify the structure of the entire suture needle and facilitate the operation;

[0114] 5. The suture needle is directly pulled out of the patient's body after the suture needle is pulled out of the patient's body, and the suture needle assembled on the needle mounting base is formed in a larger outwardly expanded structure; the suture needle with a larger outwardly expanded structure can be smoothly passed through the trocar channel due to the elastic inward retraction of the suture needle caused by the constraint and contraction of the pipe wall of the trocar channel, and the operability of the suture needle with a larger outwardly expanded structure through the trocar channel out of the patient's body does not need to be considered; when the suture needle with a larger outwardly expanded structure enters the patient's body and leaves the pipe wall of the trocar channel, the suture needle loses the constraint and contraction and naturally expands outwardly in the patient's body due to the elastic outward expansion, and the larger outwardly expanded size is restored, so that the margin of the tissue around the suture puncture hole is increased, which is beneficial to improve the suture quality and facilitate the suture operation with smaller structure size (for example, the suture of a 5mm diameter puncture hole).

[0115] In summary, the suture device with the above technical measures is beneficial to simplify the suture operation, improve the suture safety, flexibility and efficiency, simplify the forming structure of the suture device, and has higher practicability. BRIEF DESCRIPTION OF DRAWINGS

[0116] Figure 1 It is a structural schematic view of the utility model.

[0117] Figure 2 It is an enlarged view of the needle mounting base in Figure 1

[0118] Figure 3 It is an enlarged view of the suture needle in Figure 1

[0119] Figure 4 It is an enlarged view of the cooperation structure of the needle mounting base and the suture needle in Figure 1

[0120] Figure 5 It is an enlarged view of the cooperation structure of the guide wire needle locking mechanism, the steering mechanism and the handle part in Figure 1

[0121] Figure 6 It is another structural schematic view of the utility model.

[0122] Figure 7 It is an enlarged view of the cooperation structure of the needle mounting base and the suture needle in Figure 6

[0123] Figure 8 It is another structural schematic view of the suture needle of the utility model.

[0124] Figure 9 It is another structural schematic view of the utility model (a ball hinge structure of the guide wire needle locking mechanism is shown). ​​​​​

[0125] Figure 10 It is another structure schematic view of the utility model (illustrate the pressure lever structure of guide wire lock needle mechanism).

[0126] Code meaning in figure: 1-handle part;11-guide base cylinder;12-guide adjustment cylinder;13-turning base;14-spiral adjustment cylinder;2-turning mechanism;21-turning drive ring;22-operating lever;23-needle mounting base;24-needle mounting hole;25-lock wire section;3-guide wire lock needle mechanism;31-guide wire;32-tension spring one;33-limit nut;34-limit boss;35-guide wire handle;36-hinge base;37-guide wire pressure lever;4-suture needle;41-limit groove;42-threading hole;5-spring pin lock needle mechanism;51-pin head;52-tension spring two;53-threaded plug. DETAILED DESCRIPTION

[0127] The utility model relates to medical instruments, concretely is a kind of suture used for the suture of endoscope puncture hole in operation, the main technical scheme content of the utility model is specifically explained below in conjunction with multiple embodiments. Among them, embodiment 1 is explained in conjunction with the drawing of specification-just Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 And Figure 5 The technical scheme content of the utility model is clearly and detailedly explained;Embodiment 2 is explained in conjunction with the drawing of specification-just Figure 6 And Figure 7 The technical scheme content of the utility model is clearly and detailedly explained;Embodiment 3 is explained in conjunction with the drawing of specification-just Figure 8 The technical scheme content of the utility model is clearly and detailedly explained;Embodiment 4 is explained in conjunction with the drawing of specification-just Figure 9 The technical scheme content of the utility model is clearly and detailedly explained;Embodiment 5 is explained in conjunction with the drawing of specification-just Figure 10 The technical scheme content of the utility model is clearly and detailedly explained;Other embodiments, although not separately drawing, but its main structure can still refer to the drawing of embodiment 1, embodiment 2, embodiment 3, embodiment 4 or embodiment 5.

[0128] It needs to be specially stated here that the drawing of the utility model is schematic, and unnecessary details have been simplified in order to clearly the technical purpose of the utility model, to avoid obscuring the technical scheme of the utility model contribution to prior art. In addition, the "about", "substantially" and the like in the following quantity or cooperation relationship are expressed, which means that the industry is allowed to exist reasonable assembly error, machining error, etc., not literal expression absolute quantity or cooperation relationship.

[0129] Embodiment 1

[0130] The suture device of the utility model is improved on the technology of the public number CN 117562600 A or CN 117530736 A, so the following detailed description of the suture device is mainly focused on the technical contribution part of the utility model and the part associated with the technical contribution of the utility model, and the rest of the structure not described in detail is subject to the disclosure of the technology of the public number CN 117562600 A or CN 117530736 A. Of course, when there is a conflict between the structure disclosed in the public number CN 117562600 A or CN 117530736 A and the utility model, the structure described in the utility model shall prevail.

[0131] Referring to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , the suture device of the utility model comprises a handle part 1, a steering mechanism 2, a guide wire needle locking mechanism 3 and a suture needle 4.

[0132] Specifically, the middle bottom side of the handle part 1 has a guide base cylinder 11 with a hollow cylindrical structure protruding outward. At least one straight sliding groove is formed in the guide base cylinder 11 along the vertical direction. The upper part of the guide adjusting cylinder 12 is axially nested in the guide base cylinder 11, and the outward protruding sliding block is assembled in the sliding groove of the guide base cylinder 11. A spiral adjusting cylinder 14 is sleeved on the nested outer periphery of the guide base cylinder 11 and the guide adjusting cylinder 12. The spiral adjusting cylinder 14 and the guide base cylinder 11 are combined together by the axial limiting boss, and the spiral adjusting cylinder 14 and the guide adjusting cylinder 12 are combined together by the threaded structure. Therefore, the circumferential rotation action of the spiral adjusting cylinder 14 on the outer periphery of the guide base cylinder 11 is converted into the axial displacement driving action of the guide adjusting cylinder 12, so that the axial length of the guide adjusting cylinder 12 in the guide base cylinder 11 can be adjusted. The guide base cylinder 11 and the guide adjusting cylinder 12 jointly constitute the guide cylinder of the handle part 1. In the operation of laparoscope puncture hole suturing, the guide adjusting cylinder 12 is used to penetrate into the channel of the punch card, and the spiral adjusting cylinder 14 and the guide base cylinder 11 are outside the channel of the punch card.

[0133] The middle top side of the handle part 1 has a steering base 13 protruding outward, and two groups of through rod holes are formed in the steering base 13. Each group of through rod holes is composed of a vertical straight hole segment and a horizontal arc seam, and the horizontal arc seam is basically centered on the vertical straight hole segment. The bottom end of the vertical straight hole segment penetrates into the guide cylinder, and the top end penetrates into the top of the steering base 13, that is, the horizontal arc seam and the vertical straight hole segment of the same group of through rod holes basically constitute a T-shaped matching structure. The vertical straight hole segments of the two groups of through rod holes on the steering base 13 form a spacing arrangement structure in the area covered by the guide cylinder.

[0134] The steering mechanism 2 is mainly composed of a steering driving ring 21 and two operating rods 22.

[0135] The steering driving ring 21 is a flexible structure, which is sleeved on the steering base 13 of the handle part 1 and can produce a semi-circular rotation action along the circumference of the steering base 13. The steering driving ring 21 blocks the transverse arc-shaped slots of the two groups of rod passing holes on the steering base 13.

[0136] The upper part of each operating rod 22 is a bent structure, which has a transverse segment, a vertical segment and a locking wire segment 25.

[0137] The two operating rods 22 correspond to the two groups of rod passing holes on the handle part 1, that is, the upper transverse segment of the operating rod 22 is radially passed through the inner diameter of the transverse arc-shaped slot of the corresponding rod passing hole of the steering base 13, connected with the steering driving ring 21 sleeved on the outer circumference of the steering base 13, the vertical segment of the operating rod 22 is axially passed through the vertical straight hole segment of the corresponding rod passing hole of the steering base 13 from the side of the guide cylinder, extended into the guide cylinder of the handle part 1, and the lower end of the operating rod 22 is extended out of the guide cylinder of the handle part 1. The locking wire segment 25 is protruded and formed at the transition between the transverse segment and the vertical segment, basically coaxially matched with the vertical segment, and the locking wire segment 25 is axially passed through the vertical straight hole segment of the corresponding rod passing hole of the steering base 13 from the top side (that is, opposite to the side of the guide cylinder). In this way, the upper part of the operating rod 22 basically constitutes a T-shaped structure in the corresponding rod passing hole of the steering base 13, and of course, in order to meet the rotation folding / unfolding action of the operating rod 22 in the steering base 13, the operating rod 22 is rotatably and relatively freely arranged in the corresponding rod passing hole of the steering base 13.

[0138] In the above basic structure, the lower end of each operating rod 22 has an outwardly protruded needle mounting base 23, and the maximum outer diameter of the needle mounting base 23 is smaller than the inner diameter of the punch card channel to be passed through by the guide cylinder of the handle part 1. When the above steering driving ring 21 performs circumferential rotation on the outer circumference of the steering base 13, it drives the two operating rods 22 to produce synchronous rotation on the handle part 1, and in their synchronous rotation action, the needle mounting bases 23 of the lower ends of the two operating rods 22 form close folding or opposite unfolding. The needle mounting bases 23 of the two operating rods 22 are in the folding state, which are within the axial accommodation coverage of the punch card channel to be passed through by the guide cylinder of the handle part 1 during surgical operation, so as to ensure that the punch card channel can be reliably passed through, especially in the axial displacement accommodation of the above guide adjusting cylinder 12. The needle mounting bases 23 of the two operating rods 22 are in the unfolded state, and the maximum outer edge is outside the axial accommodation coverage of the punch card channel to be passed through by the guide cylinder of the handle part 1 during surgical operation, so as to be able to mount the suture needle 4.

[0139] Of course, to facilitate the close retraction of the needle mounting bases 23 of the two operating rods 22, the needle mounting base 23 of each operating rod 22, based on the unfolded state, forms a slightly thicker, approximately plate-like structure in the thickness direction of the unfolded state. Since the needle mounting base 23 is located inside the patient's body during insertion and suturing, to improve safety, the outer contour of the needle mounting base 23 is formed with rounded corners and / or curved surfaces without sharp edges, especially its bottom end, which is basically formed with a spherical crown surface structure.

[0140] On the needle mounting base 23 of each of the aforementioned operating levers 22, a needle mounting hole 24 is formed in a concave structure at the outer edge in the unfolded state, with the opening of the needle mounting hole 24 facing towards the handle portion 1. At the location where the needle mounting hole 24 is formed on the needle mounting base 23, a slope structure with a lower outer edge and a higher inner side is formed, so that the stamping channel through which the guide cylinder is to pass is squeezed and accommodated, improving the reliability of exiting the stamping channel even after deformation occurs.

[0141] The suture needle 4 is detachably inserted into the needle hole 24 of the corresponding needle base 23, meaning that the operating lever 22 is detachably connected to the corresponding suture needle 4 via the needle base 23. To facilitate suture thread insertion, a threading hole 42 is provided on the suture needle 4, through which the suture thread connects to the suture needle 4. To prevent loss and removal of the suture needle 4 after detachment from the needle base 23, the threading hole 42 is formed near the opening of the needle hole 24 on the corresponding needle base 23, specifically in a non-central region of the suture needle 4's height direction, close to the needle tail. Simultaneously, the needle tail end face of the suture needle 4 has a smooth curved surface structure (or a spherical cap structure), allowing the suture needle 4 to be inserted into the needle hole 24 on the corresponding needle base 23 via its needle tail.

[0142] The suture needle 4 is simply assembled in the needle hole 24 on the corresponding needle base 23 by an insert structure, which poses a great risk of detachment. The guide wire locking needle mechanism 3 is specifically designed to eliminate this risk.

[0143] The guide wire locking mechanism 3 has a guide wire 31 and a tension spring 32. In order to enable the operating lever 22 of the steering mechanism 2 to effectively engage with the guide wire 31 of the guide wire locking mechanism 3, each operating lever 22 of the steering mechanism 2 also has the following structure.

[0144] The vertical section and the locking wire section 25 of the operating rod 22 are both hollow structures, and the hollow channel of the locking wire section 25 is axially connected with the hollow channel of the vertical section, thus forming a hollow channel in the operating rod 22 that can be used to insert the guide wire 31. The hollow channel of the operating rod 22 is connected to the needle hole 24 on the lower needle base 23, that is, the hollow channel of the operating rod 22 leads to the needle hole 24 on the needle base 23.

[0145] The guide wire 31 of the guide wire locking needle mechanism 3 is inserted into the hollow hole of the corresponding operating lever 22, the lower end of the guide wire 31 extends to the needle loading hole 24 of the corresponding needle loading base 23, and the upper end of the guide wire 31 extends out of the top end of the wire locking section 25 of the operating lever 22, thereby vertically extending out of the steering base 13 and forming a protrusion on the top of the steering base 13. Since the upper end of the guide wire 31 extends axially out of the steering base 13 of the handle part 1 through the wire locking section 25 of the operating lever 22, a tension spring 32 is sleeved on the guide wire 31 at the wire locking section 25 for the convenience of arrangement and control, and is above the transverse section and vertical section of the operating lever 22.

[0146] The guide wire 31 further has a radially outward protruding limiting boss 34 in the wire locking section 25, which forms a height difference cooperation with the opposite structure below. The tension spring 32 in the wire locking section 25 has a lower end abutting against the limiting boss 34 of the guide wire 31.

[0147] In the wire locking section 25, a limiting nut 33 is connected by a threaded structure, that is, the inner wall of the upper end of the wire locking section 25 is a threaded structure, which is connected with the matching limiting nut 33 by a threaded structure, so that the limiting nut 33 does not have a direct connection relationship with the steering base 13 and can rotate on the steering base 13 along with the rotation of the operating lever 22. The limiting nut 33 has a hole for leading out the guide wire 31, that is, the limiting nut 33 for the guide wire 31 to pass through freely is connected by a threaded structure in the wire locking section 25, the limiting nut 33 is above the limiting boss 34 on the guide wire 31, and the upper end of the tension spring 32 abuts against the limiting nut 33.

[0148] In this way, the tension spring 32 axially presses downward the guide wire 31 combined in the operating lever 22; in the initial state, the lower end of the guide wire 31 pressed downward by the elastic tension of the tension spring 32 extends into the needle loading hole 24 of the corresponding needle loading base 23, and abuts against the suture needle 4 inserted into the needle loading hole 24 to limit the abutting position; when the needle locking state is released, the guide wire 31 is lifted up at the handle part 1, so that the lower end of the guide wire 31 exits the needle loading hole 24 of the corresponding needle loading base 23, and the abutting limiting of the suture needle 4 is released; of course, the lifted guide wire 31 compresses the tension spring 32, and the guide wire 31 is automatically reset under the action of the tension spring 32 once it is released.

[0149] In the above structure, since the pre-tightening structure of the guide wire 31 axially pressed downward, that is, the tension spring 32 and the limiting nut 33 do not have a contact cooperation with the steering base 13, the axial pre-tightening structure of the guide wire 31 can rotate along with the rotation of the operating lever 22, the rotation operation is flexible, and the axial pre-tightening structure of the guide wire 31 does not hinder the rotation of the operating lever 22.

[0150] In the above structure, in order to facilitate the application of the guide wire 31 to the lifting force, the guide wire 31 extends out of the upper end of the steering base 13, has a protruding structure (of course, a knurled structure can also be used instead) for pulling operation, and of course, the protruding structure can limit the axial downward pressure of the tension spring 32.

[0151] In order to improve the stability of the suture needle 4 inserted into the needle mounting hole 24 of the needle mounting base 23, a limiting groove 41 (of course, a non-smooth friction-increasing structure such as a protrusion can also be used instead) is formed in the needle tail of the suture needle 4 in a concave structure. After the suture needle 4 is inserted into the needle mounting hole 24 of the needle mounting base 23, the lower end of the guide wire 31 abuts against the limiting groove 41 of the needle tail of the suture needle 4. Preferably, the lower end of the guide wire 31 is curved, so that the inserted suture needle 4 can directly push the guide wire 31 out of the needle mounting hole 24.

[0152] The suture device has the above structure, and after the suture needle 4 is connected in place on the corresponding needle mounting base 23, the needle tip of the suture needle 4 forms a backfolding assembly structure towards the handle portion 1 at the needle mounting base 23.

[0153] In the operation of suture of a laparoscope puncture hole, the suture needle 4 assembled on the corresponding operating rod 22 penetrates into the laparoscope puncture hole together with the operating rod 22, and is driven by the handle portion 1 to perform suture and needle insertion at the puncture hole; after the suture and needle insertion at the puncture hole is completed, the suture needle 4 can be disassembled from the needle mounting base 23 of the corresponding operating rod 22 to be pulled out of the human tissue alone.

[0154] Embodiment 2

[0155] The suture device of the utility model is improved on the technology disclosed in CN 117562600 A or CN 117530736 A, and the detailed description of the suture device is as follows: the technical contribution of the utility model and the part associated with the technical contribution of the utility model are mainly focused on, and the rest of the structure not described in detail is disclosed in the technology of CN 117562600 A or CN 117530736 A. Of course, when there is a conflict between the structure disclosed in CN 117562600 A or CN 117530736 A and the utility model, the structure described in the utility model should be used as the standard.

[0156] Referring to Figure 6 and Figure 7 The suture device of the utility model includes a handle portion 1, a steering mechanism 2, a spring pin locking needle mechanism 5 and a suture needle 4.

[0157] Specifically, the middle bottom side of the handle part 1 has a guide base cylinder 11 with an outwardly convex hollow cylindrical structure. At least one straight sliding slot is vertically formed in the guide base cylinder 11. The upper part of a guide adjusting cylinder 12 is axially sleeved in the guide base cylinder 11, and an outwardly convex sliding block is fitted in the sliding slot of the guide base cylinder 11. A screw adjusting cylinder 14 is sleeved at the sleeved outer periphery of the guide base cylinder 11 and the guide adjusting cylinder 12. The screw adjusting cylinder 14 is combined with the guide base cylinder 11 by an axial limiting boss, and is combined with the guide adjusting cylinder 12 by a threaded structure. Therefore, the circumferential rotation of the screw adjusting cylinder 14 at the outer periphery of the guide base cylinder 11 is converted into an axial displacement driving action of the guide adjusting cylinder 12, so that the axial length of the guide adjusting cylinder 12 in the guide base cylinder 11 is adjustable. The guide base cylinder 11 and the guide adjusting cylinder 12 jointly constitute a guide cylinder of the handle part 1. In the operation of laparoscope puncture hole suture, the guide adjusting cylinder 12 is used as a channel for entering a punch card, and the screw adjusting cylinder 14 and the guide base cylinder 11 are outside the punch card channel.

[0158] The middle top side of the handle part 1 has an outwardly convex steering base 13, which is internally formed with two groups of rod passing holes. Each group of rod passing holes is composed of a vertical straight hole segment and a horizontal arc-shaped seam, which is substantially centered on the vertical straight hole segment and penetrates into the guide cylinder. The vertical straight hole segments of the two groups of rod passing holes on the steering base 13 form a spaced arrangement structure within the coverage range of the guide cylinder.

[0159] The steering mechanism 2 is mainly composed of a steering drive ring 21 and two operating rods 22.

[0160] The steering drive ring 21 is a flexible structure, which is sleeved on the steering base 13 of the handle part 1 and can produce a half-ring rotation action along the circumference of the steering base 13. The steering drive ring 21 blocks the horizontal arc-shaped seams of the two groups of rod passing holes on the steering base 13.

[0161] The upper part of each operating rod 22 is a bent structure with a horizontal segment and a vertical segment.

[0162] The two operating rods 22 correspond to the two groups of rod passing holes on the handle part 1, i.e. the horizontal segment of the operating rod 22 radially passes out of the horizontal arc-shaped seam of the corresponding rod passing hole of the steering base 13, and is connected with the steering drive ring 21 sleeved at the outer periphery of the steering base 13. The vertical segment of the operating rod 22 axially passes through the vertical straight hole segment of the corresponding rod passing hole of the steering base 13 and extends into the guide cylinder of the handle part 1, and the lower end of the operating rod 22 extends out of the guide cylinder of the handle part 1.

[0163] In the above basic structure, the lower end of each operating rod 22 has an outwardly convexly formed needle mounting base 23, the maximum outer diameter of which is smaller than the inner diameter of the trocar channel through which the guide cylinder of the handle portion 1 is to pass. When the above-mentioned steering drive ring 21 rotates circumferentially around the outer periphery of the steering base 13, it drives the two operating rods 22 to rotate synchronously on the handle portion 1, and in their synchronous rotating action, the needle mounting bases 23 at the lower ends of the two operating rods 22 are formed to be close to being retracted or to be spread apart. In the retracted state, the needle mounting bases 23 of the two operating rods 22 are within the axial accommodation coverage of the trocar channel through which the guide cylinder of the handle portion 1 is to pass during the surgical operation, so as to ensure that the two operating rods 22 can reliably pass through the trocar channel, especially when the above-mentioned guide adjustment cylinder 12 is axially displaced and accommodated. In the spread apart state, the maximum outer edges of the needle mounting bases 23 of the two operating rods 22 are outside the axial accommodation coverage of the trocar channel through which the guide cylinder of the handle portion 1 is to pass during the surgical operation, so as to be able to mount the suture needle 4.

[0164] Of course, in order to facilitate the close retraction of the needle mounting bases 23 of the two operating rods 22, the needle mounting base 23 of each operating rod 22 is formed to have a slightly thicker thickness in the thickness direction of the spread apart state, in the form of an approximate plate-like structure. In order to improve safety, the outer profile of the needle mounting base 23 is formed in the form of a rounded corner and / or curved surface structure without sharp edges, especially the bottom end thereof is substantially formed in the form of a spherical cap surface structure, since the needle mounting base 23 is in the patient's body during the process of entering the patient's body and the process of suture needle insertion.

[0165] On the needle mounting base 23 of each operating rod 22, a needle mounting hole 24 is formed in the form of an inwardly recessed structure at the outer edge of the spread apart state, the hole opening of which faces toward the handle portion 1 side. At the position where the needle mounting base 23 is formed with the needle mounting hole 24, a beveled surface structure is formed, which has a low outer edge and a high inner side, so as to be accommodated by the extrusion of the trocar channel through which the guide cylinder is to pass, even after deformation occurs, thereby improving the reliability of exiting the trocar channel.

[0166] The suture needle 4 is detachably mounted in the needle mounting hole 24 of the corresponding needle mounting base 23, that is, the operating rod 22 is connected with the corresponding suture needle 4 in a detachable manner through the needle mounting base 23.

[0167] In order to realize suture lead threading, a threading hole 42 is provided on the suture needle 4, through which the suture thread is connected with the suture needle 4. In order to prevent the loss and removal of the suture needle 4 after it is detached from the needle mounting base 23, the threading hole 42 on the suture needle 4 is formed adjacent to the hole opening of the needle mounting hole 24 on the corresponding needle mounting base 23, so that the threading hole 42 is formed in a non-central region of the height direction of the suture needle 4, close to the needle tail portion; at the same time, the end face of the needle tail portion of the suture needle 4 is a smooth curved surface structure (or a spherical cap surface structure), and the suture needle 4 is mounted in the needle mounting hole 24 of the corresponding needle mounting base 23 through the needle tail portion.

[0168] The suture needle 4 is simply assembled in the needle mounting hole 24 on the corresponding needle mounting base 23 in a plug-in structure, and there is a great risk of disengagement. The spring pin locking needle mechanism 5 is specially designed to eliminate this risk.

[0169] On the needle mounting base 23 of the operating rod 22 described above, an elastic pin hole is provided to the needle mounting hole 24, and the elastic pin hole is formed in the thicker part of the needle mounting base 23.

[0170] The spring pin locking needle mechanism 5 has a pin head 51 assembled in the elastic pin hole of the needle mounting base 23, a tension spring 52 abutting between the pin head 51 and a threaded plug 53. In the initial state, the outer end of the pin head 51 axially pushed by the tension spring 52 extends into the needle mounting hole 24 and abuts against the suture needle 4 inserted in the needle mounting hole 24.

[0171] In order to improve the controllability of the suture needle 4 in the needle mounting hole 24 of the needle mounting base 23, the cross-sectional profile of the needle mounting hole 24 on the needle mounting base 23 is a circular hole structure, and the pin head 51 of the spring pin locking needle mechanism 5 extends into the needle mounting hole 24 in a spherical cap surface structure. At the same time, the suture needle 4 is used as a needle tail part inserted in the needle mounting hole 24 of the needle mounting base 23, and a limiting groove 41 is formed in the needle tail part in an inner recess structure at a local part in the circumferential direction. The remaining needle tail part of the circumference where the limiting groove 41 is located is a cylindrical structure matching the needle mounting hole 24. When the suture needle 4 is inserted in the needle mounting hole 24 of the needle mounting base 23, the curved surface of the end face of the needle tail part pushes the curved surface structure of the pin head 51, so that the pin head 51 is axially retracted and withdrawn from the needle mounting hole 24. When the suture needle 4 is inserted in place in the needle mounting hole 24 of the needle mounting base 23, the pin head 51 under the action of the tension spring 52 extends into the needle mounting hole 24, and the pin head 51 abuts in the limiting groove 41 of the needle tail part of the suture needle 4 in a spherical cap surface structure. In the unlocked state, the suture needle 4 is rotated in the circumferential direction in the needle mounting hole 24, so that the pin head 51 is extruded and withdrawn from the needle mounting hole 24, and the suture needle 4 is pulled out of the needle mounting hole 24 by removing the pin limiting in the limiting groove 41.

[0172] The suture needle 4 is connected in place on the corresponding needle mounting base 23, and the needle tip part of the suture needle 4 forms a backfolding assembly structure towards the handle part 1 at the needle mounting base 23.

[0173] In the operation of laparoscopic puncture hole suturing, the suture needle 4 assembled on the corresponding operating rod 22 is inserted into the laparoscopic puncture hole together with the operating rod 22, and performs the suture needle insertion at the puncture hole under the driving of the handle part 1. After the suture needle insertion at the puncture hole is completed, the suture needle 4 can be disassembled and separated from the needle mounting base 23 of the corresponding operating rod 22, and is pulled out of the human tissue alone.

[0174] Example 3

[0175] The other contents of this embodiment are the same as those of Embodiment 1, except that:

[0176] Referring to Figure 8 As shown in the figure, the suture needle 4 is used as a part of the shaped limiting groove 41, which is a variable-diameter structure, i.e., the annular inner recess forms the limiting groove.

[0177] Compared with the suture needle structure of Embodiment 1, this structure does not need to consider the matching position of the limiting groove 41 and the guide wire in the needle mounting hole during suture needle insertion, and can be inserted at any angle.

[0178] Of course, this embodiment is only applicable to the limiting of the suture needle by the guide wire needle locking mechanism, and cannot be applied to the spring pin needle locking mechanism of Embodiment 2.

[0179] Embodiment 4

[0180] The suture device of the utility model is improved on the technology disclosed in CN 117562600 A or CN 117530736 A, so the following detailed description of the suture device mainly focuses on the technical contribution part of the utility model and the part associated with the technical contribution of the utility model, and the rest of the structure not described in detail is disclosed in the technology disclosed in CN 117562600 A or CN 117530736 A. Of course, when there is a conflict between the structure disclosed in CN 117562600 A or CN 117530736 A and the utility model, the structure described in the utility model should be used as the standard.

[0181] Referring to Figure 9 As shown in the figure, the suture device of the utility model comprises a handle part 1, a steering mechanism, a guide wire needle locking mechanism 3 and a suture needle.

[0182] Specifically, the middle part of the handle part has an outer convex hollow cylindrical structure guide base cylinder at the bottom side. At least one straight sliding slot is formed in the guide base cylinder along the vertical direction, and the upper part of the guide adjusting cylinder is axially sleeved in the guide base cylinder, so that the outer convex sliding block is assembled in the sliding slot of the guide base cylinder. A screw adjusting cylinder is sleeved on the outer periphery of the sleeving of the guide base cylinder and the guide adjusting cylinder, and the screw adjusting cylinder and the guide base cylinder are combined together by the axial limiting boss, and the screw adjusting cylinder and the guide adjusting cylinder are combined together by the threaded structure. Therefore, the circumferential rotation action of the screw adjusting cylinder on the outer periphery of the guide base cylinder is converted into the axial displacement driving action of the guide adjusting cylinder, so that the axial length of the guide adjusting cylinder in the guide base cylinder can be adjusted. The guide base cylinder and the guide adjusting cylinder jointly constitute the guide cylinder of the handle part. In the laparoscope puncture hole suturing operation, the guide adjusting cylinder is used to penetrate into the stent channel, and the screw adjusting cylinder and the guide base cylinder are outside the stent channel.

[0183] At the middle top side of the handle part 1, there is an outwardly convexly formed steering base 13, in which two groups of through rod channels are formed. Each group of through rod channels is composed of a vertical straight hole section and a horizontal arcuate slit, which is substantially centered on the vertical straight hole section, the bottom end of which penetrates into the guide cylinder and the top end of which penetrates into the top of the steering base 13, i.e. the horizontal arcuate slit and the vertical straight hole section of the same group of through rod channels substantially form a T-shaped fitting structure. The vertical straight hole sections of the two groups of through rod channels on the steering base 13 form a spaced arrangement structure on the steering base 13 covered by the guide cylinder.

[0184] The steering mechanism is mainly composed of a steering drive ring and two operating rods.

[0185] The steering drive ring is a flexible structure, which is sleeved on the steering base 13 of the handle part and can produce a semi-ring rotating action along the circumference of the steering base 13. The steering drive ring blocks the horizontal arcuate slits of the two groups of through rod channels on the steering base 13.

[0186] The upper part of each operating rod is a bent structure, which has a horizontal section, a vertical section and a locking wire section 25.

[0187] The two operating rods correspond to the two groups of through rod channels on the handle part, i.e. the horizontal section of the upper part of the operating rod radially penetrates into the horizontal arcuate slit of the corresponding through rod channel of the steering base 13, and is connected with the steering drive ring sleeved on the outer circumference of the steering base 13, the vertical section of the operating rod axially penetrates from the side of the guide cylinder through the vertical straight hole section of the corresponding through rod channel of the steering base 13, extends into the guide cylinder of the handle part, and the lower end of the operating rod extends out of the guide cylinder of the handle part. The locking wire section 25 is convexly formed at the transition between the horizontal section and the vertical section, and substantially forms a coaxial fitting with the vertical section, and the locking wire section 25 axially penetrates from the top side (i.e. opposite to the side of the guide cylinder) through the vertical straight hole section of the corresponding through rod channel of the steering base 13 and extends out. In this way, the upper part of the operating rod substantially forms a T-shaped structure in the corresponding through rod channel of the steering base 13, and of course, in order to meet the rotating retracting / extension action of the operating rod in the steering base 13, the operating rod is rotatably and relatively freely arranged in the corresponding through rod channel of the steering base 13.

[0188] In the above basic structure, the needle mounting base of each operating rod is outwardly convexly formed at the lower end thereof, and the maximum outer diameter of the needle mounting base is smaller than the inner diameter of the trocar channel through which the guide cylinder of the handle portion is to pass. When the above steering drive ring is circumferentially rotated around the outer periphery of the steering base 13, the two operating rods are driven to synchronously rotate on the handle portion, and in their synchronous rotating action, the needle mounting bases of the lower ends of the two operating rods are formed to be close to each other or to be away from each other. In the close state of the two operating rods, the needle mounting bases are within the axial accommodation coverage of the trocar channel through which the guide cylinder of the handle portion is to pass during the surgical operation, so as to ensure that the two operating rods can reliably pass through the trocar channel, especially when the guide adjusting cylinder is axially displaced and accommodated.

[0189] Of course, in order to facilitate the close approach of the needle mounting bases of the two operating rods, the needle mounting base of each operating rod is formed to be approximately plate-shaped with a slightly greater thickness in the thickness direction of the open state. In order to improve safety, the outer contour of the needle mounting base is formed with a rounded corner and / or curved surface structure without sharp edges, especially the bottom end thereof is substantially formed with a spherical cap surface structure.

[0190] On the needle mounting base of each operating rod, a needle mounting hole is formed in an inwardly recessed structure at the outer edge of the open state, and the hole opening thereof faces the handle portion side. At the position where the needle mounting base is formed with the needle mounting hole, a beveled structure with a low outer edge and a high inner side is formed, so that the trocar channel through which the guide cylinder is to pass can be extruded and accommodated, and even after deformation occurs, the reliability of exiting the trocar channel is improved.

[0191] The suture needle is detachably assembled in the needle mounting hole of the corresponding needle mounting base, that is, the operating rod is connected with the corresponding suture needle through the needle mounting base in a detachable structure. In order to realize suture lead, a threading hole is provided on the suture needle, and the suture thread is connected with the suture needle through the threading hole. In order to prevent the loss and removal of the suture needle after it is separated from the needle mounting base, the threading hole on the suture needle is formed adjacent to the hole opening of the needle mounting hole on the corresponding needle mounting base, so that the threading hole is formed in a non-central region of the suture needle in the height direction, close to the needle tail portion; at the same time, the end face of the needle tail portion of the suture needle is a smooth curved surface structure (or a spherical cap surface structure), and the suture needle is assembled in the needle mounting hole of the corresponding needle mounting base through the needle tail portion.

[0192] The suture needle is simply assembled in the needle mounting hole of the corresponding needle mounting base in a detachable structure, and there is a great risk of separation, and the guide wire locking needle mechanism 3 is specially designed to eliminate this risk.

[0193] The guide wire locking needle mechanism 3 has a guide wire 31 and a guide wire handle 35. In order to enable the operating rod of the steering mechanism to effectively compound with the guide wire 31 of the guide wire locking needle mechanism 3, each operating rod of the steering mechanism also has the following structure.

[0194] The vertical section and the wire locking section 25 of the operating rod are hollow structures, and the hollow hole of the wire locking section 25 is axially through the hollow hole of the vertical section, thereby forming a hollow hole in the operating rod that can pass the guide wire 31, and the hollow hole of the operating rod is through the needle mounting hole on the lower end needle mounting base, that is, the hollow hole of the operating rod is through the needle mounting hole on the needle mounting base.

[0195] The guide wire 31 of the guide wire locking needle mechanism 3 is passed in the corresponding hollow hole of the operating rod, the lower end of the guide wire 31 extends to the needle mounting hole of the corresponding needle mounting base, and the upper end of the guide wire 31 is passed in the wire locking section 25 of the operating rod and does not extend out of the upper end of the wire locking section 25.

[0196] The guide wire handle 35 is connected at the upper end of the wire locking section 25 in a threaded structure, that is, the inner wall of the upper end of the wire locking section 25 is a threaded structure, and it is connected with the matching guide wire handle 35 in a threaded structure. The upper part of the guide wire handle 35 extends out of the wire locking section 25 of the operating rod, in order to facilitate the screwing operation of the guide wire handle 35, the guide wire handle 35 extends out of the upper end of the wire locking section 25 and has a knurled structure for pulling and rotating the handle.

[0197] The upper end of the guide wire 31 in the wire locking section 25 is connected with the guide wire handle 35 in the wire locking section 25 in a ball hinge structure.

[0198] In this way, the guide wire handle 35 forms the following control on the guide wire 31 compounded in the operating rod:

[0199] When the guide wire handle 35 is fed in a spiral in the wire locking section 25, the lower part of the guide wire handle 35 forms an axial downward pressure on the passing structure of the guide wire 31 in the operating rod, and the lower end of the guide wire 31 that is axially pressed downward extends into the needle mounting hole of the corresponding needle mounting base and abuts and limits the suture needle inserted into the needle mounting hole.

[0200] When the guide wire handle 35 is fed out of the wire locking section 25 in a spiral, the lower part of the guide wire handle 35 pulls up the passing structure of the guide wire 31 in the operating rod, and the lower end of the guide wire 31 that is axially pulled up exits the needle mounting hole of the corresponding needle mounting base and releases the abutting and limiting of the suture needle.

[0201] In the above structure, since the guide wire 31 and the guide wire handle 35 are in a ball hinge active fitting relationship, whether the guide wire handle 35 is threadedly connected to the wire locking section of the operating rod or the steering base of the handle part, the rotation action of the operating rod will not be hindered. In view of this, as a transformation structure, the wire locking section on the operating rod can be removed, and the guide wire can be directly led at the transition of the transverse section and the vertical section of the operating rod, so that the guide wire is worn in the corresponding wearing hole of the steering base, and then the guide wire handle is threadedly connected at the upper end of the corresponding wearing hole of the steering base.

[0202] In order to improve the stability of the suture needle inserted into the needle mounting hole of the needle mounting base, a limiting groove is formed in the needle tail part of the suture needle in a concave structure (of course, a non-smooth friction-increasing structure such as a protrusion can also be used instead). After the suture needle is inserted into the needle mounting hole of the needle mounting base, the lower end of the guide wire abuts against the limiting groove of the needle tail part of the suture needle. Preferably, the lower end of the guide wire is in a curved surface structure, so that the inserted suture needle can directly push the guide wire out of the needle mounting hole.

[0203] The above structure of the suture device, after the suture needle is connected in place on the corresponding needle mounting base, the needle tip part of the suture needle forms a backfolding assembly structure towards the handle part at the needle mounting base.

[0204] In the operation of suture of the endoscope puncture hole, the suture needle assembled on the corresponding operating rod is inserted into the endoscope puncture hole together with the operating rod, and is used to suture the puncture hole under the driving of the handle part; after the suture of the puncture hole is completed, the suture needle can be disassembled and separated from the needle mounting base of the corresponding operating rod, and is independently pulled out of the human tissue in a pulling manner.

[0205] Embodiment 5

[0206] The suture device of the utility model is improved on the technology disclosed in CN 117562600 A or CN 117530736 A, so the following detailed description of the suture device mainly focuses on the technical contribution part of the utility model and the part associated with the technical contribution of the utility model, and the rest of the structure not described in detail is subject to the disclosure in CN 117562600 A or CN 117530736 A. Of course, when there is a conflict between the structure disclosed in CN 117562600 A or CN 117530736 A and the utility model, the structure described in the utility model shall prevail.

[0207] Referring to Figure 10 As shown in the figure, the suture device of the utility model includes a handle part 1, a steering mechanism, a guide wire needle locking mechanism 3 and a suture needle.

[0208] Specifically, a guide base cylinder with an outwardly convex hollow cylindrical structure is arranged at the middle bottom side of the handle part. At least one straight sliding slot is formed in the guide base cylinder along the vertical direction. The upper part of the guide adjusting cylinder is axially sleeved in the guide base cylinder, and the outwardly convex sliding block is assembled in the sliding slot of the guide base cylinder. A screw adjusting cylinder is sleeved at the sleeving outer periphery of the guide base cylinder and the guide adjusting cylinder. The screw adjusting cylinder and the guide base cylinder are combined together by the axial limiting boss. The screw adjusting cylinder and the guide adjusting cylinder are combined together by the threaded structure. Therefore, the circumferential rotation action of the screw adjusting cylinder at the outer periphery of the guide base cylinder is converted into the axial displacement driving action of the guide adjusting cylinder, so that the axial length of the guide adjusting cylinder in the guide base cylinder is adjustable. The guide base cylinder and the guide adjusting cylinder jointly constitute the guide cylinder of the handle part. In the operation of the laparoscope puncture hole suture, the guide adjusting cylinder is used to penetrate into the channel of the stab card, and the screw adjusting cylinder and the guide base cylinder are located outside the channel of the stab card.

[0209] An outwardly convex steering base 13 is arranged at the middle top side of the handle part 1. Two groups of through rod holes are formed in the steering base 13. Each group of through rod holes is composed of a vertical straight hole segment and a horizontal arc-shaped seam. The horizontal arc-shaped seam is substantially centered on the vertical straight hole segment. The bottom end of the vertical straight hole segment penetrates into the guide cylinder, and the top end penetrates into the top part of the steering base 13. That is, the horizontal arc-shaped seam and the vertical straight hole segment of the same group of through rod holes substantially constitute a T-shaped matching structure. The vertical straight hole segments of the two groups of through rod holes on the steering base 13 form a spaced arrangement structure on the steering base 13 covered by the guide cylinder.

[0210] The steering mechanism is mainly composed of a steering drive ring and two operating rods.

[0211] The steering drive ring is a flexible structure, which is sleeved on the steering base 13 of the handle part and can produce a half-ring rotation action along the circumference of the steering base 13. The steering drive ring blocks the horizontal arc-shaped seams of the two groups of through rod holes on the steering base 13.

[0212] The upper part of each operating rod is a bent structure, which has a horizontal segment, a vertical segment and a locking wire segment 25.

[0213] The two operating rods correspond to the two sets of rod passing holes on the handle part, i.e. the upper transverse section of the operating rod is radially passed out of the transverse arc slot of the corresponding rod passing hole of the steering base 13, connected with the steering driving ring sleeved on the outer periphery of the steering base 13, the vertical section of the operating rod is axially passed out of the vertical straight hole section of the corresponding rod passing hole of the steering base 13 from the side of the guide cylinder, extended into the guide cylinder of the handle part, and the lower end of the operating rod is extended out of the guide cylinder of the handle part. The locking wire section 25 is protruded and formed at the transition between the transverse section and the vertical section, substantially coaxially matched with the vertical section, and the locking wire section 25 is axially passed and installed from the top side (i.e. opposite to the side of the guide cylinder) of the vertical straight hole section of the corresponding rod passing hole of the steering base 13 and extended out. In this way, the upper part of the operating rod substantially forms a T-shaped structure in the corresponding rod passing hole of the steering base 13, and of course, in order to meet the rotating retracting / extending action of the operating rod in the steering base 13, the operating rod is rotatably and relatively freely installed in the corresponding rod passing hole of the steering base 13.

[0214] In the above basic structure, the lower end of each operating rod has an outwardly protruded needle installing base, and the maximum outer diameter of the needle installing base is smaller than the inner diameter of the trocar channel to be passed through by the guide cylinder of the handle part. When the above steering driving ring is circumferentially rotated on the outer periphery of the steering base 13, the two operating rods are driven to synchronously rotate on the handle part, and in their synchronous rotating action, the needle installing bases of the lower ends of the two operating rods are close to be retracted or opposite to be extended. In the retracted state, the needle installing bases of the two operating rods are within the axial accommodation coverage of the trocar channel to be passed through by the guide cylinder of the handle part during the surgical operation, so as to ensure that the trocar channel can be reliably passed through, especially in the axial displacement accommodation of the above guide adjusting cylinder. In the extended state, the maximum outer edge of the needle installing bases of the two operating rods is outside the axial accommodation coverage of the trocar channel to be passed through by the guide cylinder of the handle part during the surgical operation, so as to be able to install the suture needle.

[0215] Of course, in order to facilitate the close retraction of the needle installing bases of the two operating rods, the needle installing base of each operating rod is formed as an approximately plate-shaped structure with slightly thicker thickness in the thickness direction of the extended state. Since the needle installing base is in the patient's body during the process of entering the patient's body and the process of suture needle insertion, in order to improve safety, the outer contour of the needle installing base is formed in a rounded corner and / or curved surface structure without sharp edges, especially the bottom end is substantially formed in a spherical cap surface structure.

[0216] On the needle installing base of each operating rod, a needle installing hole is formed in an inwardly recessed structure at the outer edge of the extended state, and the hole opening faces the handle part side. At the position where the needle installing base is formed with the needle installing hole, a slope structure with low outer edge and high inner side is formed, so that the trocar channel to be passed through by the guide cylinder is accommodated by extrusion, and even after deformation occurs, the reliability of exiting the trocar channel is improved.

[0217] The suture needle is inserted into the needle mounting hole of the corresponding needle mounting base in a detachable combination structure, that is, the operating rod is connected with the corresponding suture needle in a detachable structure through the needle mounting base. In order to realize the suture guide line, a threading hole is formed on the suture needle, and the suture line is connected with the suture needle through the threading hole. In order to prevent the suture needle from being lost after being separated from the needle mounting base and being taken out, the threading hole on the suture needle is formed near the needle tail part of the suture needle adjacent to the needle mounting hole of the corresponding needle mounting base, so that the threading hole is formed in the non-central region of the suture needle in the height direction, close to the needle tail part; at the same time, the end surface of the needle tail part of the suture needle is a smooth curved surface structure (or a spherical cap surface structure), and the suture needle is inserted into the needle mounting hole of the corresponding needle mounting base through the needle tail part.

[0218] The suture needle is simply assembled into the needle mounting hole of the corresponding needle mounting base in a plug-in structure, which has a high risk of separation, and the guide wire locking needle mechanism 3 is specially designed to eliminate this risk.

[0219] The guide wire locking needle mechanism 3 has a guide wire 31 and a tension spring 32. In order to effectively combine the operating rod of the steering mechanism with the guide wire 31 of the guide wire locking needle mechanism 3, each operating rod of the above-mentioned steering mechanism also has the following structure.

[0220] The vertical section and the wire locking section 25 of the operating rod are hollow structures, and the hollow hole of the wire locking section 25 is axially through the hollow hole of the vertical section, thereby forming a hollow hole capable of threading the guide wire 31 in the operating rod. The hollow hole of the operating rod is through the needle mounting hole of the lower end needle mounting base, that is, the hollow hole of the operating rod is through to the needle mounting hole of the needle mounting base.

[0221] The guide wire 31 of the guide wire locking needle mechanism 3 is threaded into the corresponding hollow hole of the operating rod, and the lower end of the guide wire extends to the needle mounting hole of the corresponding needle mounting base. The upper end of the guide wire 31 passes out of the top end of the wire locking section 25 of the operating rod, thereby vertically extending out of the steering base of the handle part and forming a protrusion on the top of the steering base. In order to facilitate arrangement and control, the tension spring 32 is sleeved on the guide wire 31 at the wire locking section 25, above the horizontal section and the vertical section of the operating rod.

[0222] The guide wire 31 also has a radially outwardly protruding limiting boss 34 in the wire locking section 25, which forms a height difference cooperation with the opposite structure below. The tension spring 32 in the wire locking section 25 abuts against the limiting boss 34 of the guide wire 31 at the lower end.

[0223] In the locking wire section 25, the limiting nut 33 is connected by a threaded structure, that is, the inner wall of the upper end of the locking wire section 25 is a threaded structure, which is connected with the matching limiting nut 33 by a threaded structure, so that the limiting nut 33 does not have a direct connection with the steering base 13 and can rotate with the rotation of the operating rod on the steering base 13. The limiting nut 33 has a hole for leading the guide wire 31, that is, the limiting nut 33 is threadedly connected in the locking wire section 25 to allow the guide wire 31 to pass freely, and the limiting nut 33 is above the limiting boss 34 on the guide wire 31, and the upper end of the tension spring 32 abuts against the limiting nut 33.

[0224] In this way, the tension spring 32 exerts an axial downward pressure on the guide wire 31 combined in the operating rod; in the initial state, the elastic tension of the tension spring 32 axially presses the lower end of the guide wire 31 into the needle mounting hole corresponding to the needle mounting base, and abuts against the suture needle inserted into the needle mounting hole; when the needle locking state is released, the guide wire 31 at the handle portion is lifted to make the lower end of the guide wire 31 exit the needle mounting hole corresponding to the needle mounting base, and the abutting limiting of the suture needle is released; of course, the lifted guide wire 31 compresses the tension spring 32, and once released, the guide wire 31 is automatically reset under the action of the tension spring 32.

[0225] In the above structure, since the pre-tightening structure for axially pressing the guide wire 31, that is, the tension spring 32 and the limiting nut 33, does not contact and cooperate with the steering base 13, the axial pre-tightening structure of the guide wire 31 can rotate with the rotation of the operating rod, and the rotation operation is flexible and will not be hindered by the axial pre-tightening structure of the guide wire 31.

[0226] In the above structure, in order to facilitate the application of lifting force to the guide wire 31, or to improve the inconvenience of lifting operation of the two groups of guide wire needle locking mechanisms 3 due to the too compact arrangement of the two operating rods at the steering base 13, the end of the guide wire 31 extending out of the upper end of the locking wire section 25 is hinged with a corresponding guide wire pressing lever 37, and correspondingly, in the area of the locking wire section 25 of each operating rod extending out of the steering base 13, a hinge seat 36 is protrudingly formed, and the guide wire pressing lever 37 hinged at the upper end of the guide wire 31 is hinged with the corresponding hinge seat 36 through the middle area, so as to press down the guide wire pressing lever 37 with the hinge seat 36 as the fulcrum to lift the guide wire 31. Of course, the arrangement direction of the guide wire pressing levers 37 of the two groups of guide wire needle locking mechanisms 3 is as far apart as possible.

[0227] In order to improve the stability of the suture needle inserted into the needle mounting hole of the needle mounting base, a limiting groove is formed in the needle tail of the suture needle in a concave structure (of course, a non-smooth friction-increasing structure such as a protrusion can also be used instead). After the suture needle is inserted into the needle mounting hole of the needle mounting base, the lower end of the guide wire 31 abuts against the limiting groove of the needle tail of the suture needle. Preferably, the lower end of the guide wire 31 is curved, so that the inserted suture needle can directly push the guide wire 31 out of the needle mounting hole.

[0228] The suture device has the structure that after the suture needle is connected to the corresponding needle mounting base, the needle tip of the suture needle forms a backfolding assembly structure toward the handle portion at the needle mounting base.

[0229] In the operation of suture of the endoscope puncture hole, the suture needle assembled on the corresponding operating rod is inserted into the endoscope puncture hole together with the operating rod, and is used to suture the puncture hole under the driving of the handle portion; after the suture of the puncture hole is completed, the suture needle can be disassembled from the needle mounting base of the corresponding operating rod, and is pulled out of the human tissue alone.

[0230] Embodiment 6

[0231] The suture device of the utility model is improved on the technology of the publication number CN 212939830 U, so the following detailed description of the suture device is mainly focused on the technical contribution part of the utility model and the part associated with the technical contribution of the utility model, and the rest of the structure not described in detail is subject to the disclosure of the technology of the publication number CN 212939830 U. Of course, when there is a conflict between the structure disclosed in the publication number CN 212939830 U and the utility model, the structure described in the utility model should be subject to the structure described in the utility model.

[0232] The suture device of the utility model includes a handle portion, two operating rods, a guide wire and needle locking mechanism and a suture needle.

[0233] Specifically, the middle part of the handle portion has a guide cylinder with a hollow cylinder structure formed outward. Two vertical straight hole structures of the rod passing hole are arranged at intervals on the handle portion surrounded by the guide cylinder, that is, the handle portion region surrounded by the guide cylinder constitutes a steering base for assembling two operating rods.

[0234] The upper ends of the two operating rods are correspondingly inserted into the rod passing hole of the handle portion and extend out of the top side of the handle portion to form a rotating operation part. The lower ends of the two operating rods extend out of the guide cylinder of the handle portion.

[0235] In the above basic structure, the needle mounting base of each operating rod is outwardly convexly formed at the lower end thereof, and the maximum outer diameter of the needle mounting base is smaller than the inner diameter of the trocar channel through which the guide cylinder of the handle portion is to pass. When the above two operating rods are respectively rotated on the handle portion, the needle mounting bases of the lower ends of the two operating rods are formed to be close to each other in the rotation thereof, and in the close state, the needle mounting bases of the two operating rods are within the axial accommodation range of the trocar channel through which the guide cylinder of the handle portion is to pass during the operation, so as to ensure that the operating rods can reliably pass through the trocar channel. In the open state, the maximum outer edge of the needle mounting bases of the two operating rods is outside the axial accommodation range of the trocar channel through which the guide cylinder of the handle portion is to pass during the operation, so as to enable the suture needle to be mounted.

[0236] Of course, in order to facilitate the close of the needle mounting bases of the two operating rods, the needle mounting base of each operating rod is formed to be slightly thicker in the thickness direction of the open state, and is approximately plate-shaped. In order to improve safety, the outer contour of the needle mounting base is formed to be rounded and / or curved without sharp edges, and in particular, the bottom end thereof is substantially formed to be a spherical cap surface.

[0237] On the needle mounting base of each operating rod, a needle mounting hole is formed in an inwardly recessed structure at the outer edge of the open state, and the hole opening thereof faces the handle portion side. At the position where the needle mounting hole is formed on the needle mounting base, a beveled structure is formed, in which the outer edge is low and the inner side is high, so that the trocar channel through which the guide cylinder is to pass can be accommodated by extrusion, and the reliability of exiting the trocar channel is improved even after deformation occurs.

[0238] The suture needle is detachably assembled in the needle mounting hole of the corresponding needle mounting base, that is, the operating rod is connected with the corresponding suture needle in a detachable structure through the needle mounting base. In order to realize suture threading, a threading hole is formed on the suture needle, and the suture thread is connected with the suture needle through the threading hole. In order to prevent the suture needle from being lost and taken out after being separated from the needle mounting base, the threading hole on the suture needle is formed adjacent to the hole opening of the needle mounting hole on the corresponding needle mounting base, so that the threading hole is formed in a non-central region of the suture needle in the height direction and is adjacent to the needle tail portion; at the same time, the end face of the needle tail portion of the suture needle is a smooth curved surface structure (or a spherical cap surface structure), and the suture needle is assembled in the needle mounting hole of the corresponding needle mounting base through the needle tail portion.

[0239] The suture needle is simply assembled in the needle mounting hole of the corresponding needle mounting base in a detachable structure, and there is a high risk of separation, and the guide wire locking needle mechanism is specially designed to eliminate this risk.

[0240] The guide wire locking needle mechanism has a guide wire and a tension spring. In order to effectively combine the operating rod of the steering mechanism with the guide wire of the guide wire locking needle mechanism, each operating rod of the steering mechanism has the following structure.

[0241] The operating rod is hollow and has a hollow hole for the guide wire. The hollow hole of the operating rod is in communication with the needle mounting hole of the needle base. That is, the hollow hole of the operating rod is in communication with the needle mounting hole of the needle base.

[0242] The guide wire of the guide wire locking needle mechanism is mounted in the hollow hole of the corresponding operating rod. The lower end of the guide wire extends to the needle mounting hole of the corresponding needle base. The upper end of the guide wire extends out of the top end of the operating rod. Since the upper end of the guide wire extends axially out of the top end of the operating rod, the tension spring is mounted on the guide wire at the top end of the operating rod for easy arrangement and control. Therefore, the outer diameter of the top end of the operating rod is required to be large. That is, the top end of the operating rod forms a wire locking section. The part of the guide wire in the top end of the operating rod has a radially outwardly protruding limiting boss. The tension spring in the guide wire hole of the top end of the operating rod has a lower end abutting against the limiting boss of the guide wire. A limiting nut is connected to the guide wire hole of the top end of the operating rod by a threaded structure. The limiting nut has a hole for guiding the guide wire. That is, the limiting nut is screwed into the guide wire hole of the top end of the operating rod to allow the guide wire to pass freely. The limiting nut is above the limiting boss of the guide wire. The upper end of the tension spring abuts against the limiting nut. In this way, the tension spring exerts an axial downward pressure on the guide wire combined in the operating rod. In the initial state, the elastic tension of the tension spring exerts an axial downward pressure on the lower end of the guide wire, which extends into the needle mounting hole of the corresponding needle base to abut against the suture needle mounted in the needle mounting hole. In the unlocked needle state, the guide wire is lifted at the handle to make the lower end of the guide wire exit the needle mounting hole of the corresponding needle base to release the abutting limit of the suture needle. Of course, the lifted guide wire compresses the tension spring, which is automatically reset under the action of the tension spring.

[0243] In the above structure, in order to easily exert a lifting force on the guide wire, the guide wire extends out of the upper end of the operating rod and has a protruding structure for pulling operation (of course, a knurled structure can also be used to increase friction). The protruding structure can limit the axial downward pressure of the tension spring.

[0244] In order to improve the stability of the suture needle mounted in the needle mounting hole of the needle base, a limiting groove is formed in the needle tail of the suture needle by an inward recess structure (of course, a non-smooth friction-increasing structure such as a protrusion can also be used). After the suture needle is mounted in place in the needle mounting hole of the needle base, the lower end of the guide wire abuts against the limiting groove of the needle tail of the suture needle. Preferably, the lower end of the guide wire has a curved surface structure, so that the mounted suture needle can directly push the guide wire out of the needle mounting hole.

[0245] The suture device has a suture needle, which is connected to a position corresponding to a needle mounting base, and a needle tip of the suture needle forms a backfolding assembly structure at the needle mounting base towards the handle portion.

[0246] In the laparoscope puncture hole suturing operation, the suture needle assembled on the corresponding operating rod is inserted into the laparoscope puncture hole together with the operating rod, and the suture needle is inserted into the puncture hole under the driving of the handle portion; when the suture needle is inserted into the puncture hole, the suture needle is disassembled from the needle mounting base of the corresponding operating rod and is pulled out of the human tissue alone.

[0247] Embodiment 7

[0248] The suture device is improved on the basis of the technology disclosed in the publication number CN 212939830 U, and the detailed description of the suture device is mainly focused on the technical contribution part of the utility model and the part associated with the technical contribution of the utility model, and the rest of the structure not described in detail is subject to the disclosure of the technology disclosed in the publication number CN 212939830 U. Of course, when there is a conflict between the structure disclosed in the publication number CN 212939830 U and the utility model, the structure described in the utility model shall prevail.

[0249] The suture device comprises a handle portion, two operating rods, a guide wire and needle locking mechanism and a suture needle.

[0250] Specifically, the middle bottom side of the handle portion has a guide cylinder with an outwardly convex hollow cylindrical structure. On the handle portion surrounded by the guide cylinder, two vertically straight hole structures of the rod passing hole are arranged at intervals, that is, the handle portion region surrounded by the guide cylinder constitutes a steering base for assembling two operating rods.

[0251] The upper ends of the two operating rods are correspondingly inserted into the rod passing hole of the handle portion and extend out of the top side of the handle portion to form a rotating operation part. The lower ends of the two operating rods extend out of the guide cylinder of the handle portion.

[0252] In the above basic structure, the lower end of each operating rod has an outwardly convex needle mounting base, and the maximum outer diameter of the needle mounting base is smaller than the inner diameter of the punch card channel to be passed through by the guide cylinder of the handle portion. When the two operating rods are rotated on the handle portion, the needle mounting bases of the lower ends of the two operating rods are close to each other or away from each other in their rotating action. In the close state, the needle mounting bases of the two operating rods are within the axial storage coverage of the punch card channel to be passed through by the guide cylinder of the handle portion during the operation, so as to ensure that the punch card channel can be reliably passed through. In the expanded state, the maximum outer edge of the needle mounting bases of the two operating rods is outside the axial storage coverage of the punch card channel to be passed through by the guide cylinder of the handle portion during the operation, so as to be able to mount the suture needle.

[0253] Of course, in order to facilitate the needle mounting base of the two operating rods to be close to the folding, each needle mounting base of the operating rod is formed in an approximate plate structure with slightly greater thickness in the thickness direction of the unfolded state. In order to improve safety, the outer contour of the needle mounting base is formed in a rounded corner and / or curved surface structure without sharp edges, especially the bottom end is basically formed in a spherical cap surface structure.

[0254] On the needle mounting base of each operating rod described above, a needle mounting hole is formed in a concave structure at the outer edge of the unfolded state, and the hole opening of the needle mounting hole faces the side of the handle portion. At the position where the needle mounting base is formed with the needle mounting hole, a slope structure with low outer edge and high inner side is formed so that the push card channel to be passed through by the guide cylinder is extruded and accommodated, thereby improving the reliability of exiting the push card channel even after deformation occurs.

[0255] The suture needle is detachably assembled in the needle mounting hole of the corresponding needle mounting base, that is, the operating rod is connected with the corresponding suture needle in a detachable structure through the needle mounting base. In order to realize suture lead, a threading hole is provided on the suture needle, and the suture thread is connected with the suture needle through the threading hole. In order to prevent the loss and removal of the suture needle after it is separated from the needle mounting base, the threading hole on the suture needle is formed adjacent to the hole opening part of the needle mounting hole on the corresponding needle mounting base, so that the threading hole is formed in a non-central region of the suture needle in the height direction and close to the needle tail portion; at the same time, the end face of the needle tail portion of the suture needle is a smooth curved surface structure (or a spherical cap surface structure), and the suture needle is assembled in the needle mounting hole on the corresponding needle mounting base through the needle tail portion.

[0256] The suture needle is simply assembled in the needle mounting hole on the corresponding needle mounting base in a detachable structure, which has a high risk of separation, and the guide wire locking needle mechanism is specially designed to eliminate this risk.

[0257] The guide wire locking needle mechanism has a guide wire and a tension spring. In order to effectively combine the operating rod of the steering mechanism with the guide wire of the guide wire locking needle mechanism, each operating rod of the steering mechanism has the following structure.

[0258] The operating rod is a hollow structure with a hollow hole for threading the guide wire, and the hollow hole of the operating rod is in communication with the needle mounting hole on the lower end needle mounting base, that is, the hollow hole of the operating rod communicates with the needle mounting hole on the needle mounting base.

[0259] The guide wire of the guide wire locking needle mechanism is inserted into the hollow hole of the corresponding operating rod, the lower end of the guide wire extends to the needle mounting hole of the corresponding needle mounting base, and the upper end of the guide wire extends out of the top end of the operating rod. Since the upper end of the guide wire extends axially out of the top end of the operating rod, in order to facilitate arrangement and control, a tension spring is arranged on the guide wire at the top end of the operating rod, which requires that the outer diameter of the top end of the operating rod be large, that is, the top end region of the operating rod constitutes a wire locking section. The part of the guide wire in the top end of the operating rod has a radially outwardly protruding limiting boss, and the lower end of the tension spring in the guide wire hole of the top end of the operating rod abuts against the limiting boss of the guide wire. A limiting nut is connected in a threaded structure in the guide wire hole of the top end of the operating rod, and the limiting nut has a hole leading to the guide wire, that is, the limiting nut for the guide wire to pass through freely is connected in a threaded structure in the guide wire hole of the top end of the operating rod, and the limiting nut is above the limiting boss on the guide wire, and the upper end of the tension spring abuts against the limiting nut. In this way, the tension spring one exerts an axial downward pressure on the guide wire combined in the operating rod; under the initial state, the elastic tension of the tension spring one exerts an axial downward pressure on the lower end of the guide wire, which extends into the needle mounting hole of the corresponding needle mounting base, and abuts against the suture needle inserted into the needle mounting hole; when the needle locking state is released, the guide wire at the handle portion is lifted up to make the lower end of the guide wire exit the needle mounting hole of the corresponding needle mounting base, and the abutting limiting of the suture needle is released; of course, the lifted guide wire compresses the tension spring one, and the guide wire is automatically reset under the action of the tension spring once it is released.

[0260] In the above structure, in order to facilitate the application of the lifting force to the guide wire, the guide wire extends out of the upper end of the operating rod and has a protruding structure for pulling operation (of course, a knurled structure for increasing friction can also be used instead, and the protruding structure can limit the axial downward pressure of the tension spring one.

[0261] In order to improve the stability of the suture needle inserted into the needle mounting hole of the needle mounting base, a limiting groove is formed in the needle tail portion of the suture needle in a concave structure (of course, a non-smooth friction-increasing structure such as a protruding point can also be used instead). After the suture needle is inserted into the needle mounting hole of the needle mounting base, the lower end of the guide wire abuts against the limiting groove in the needle tail portion of the suture needle. It is preferable that the lower end of the guide wire has a curved surface structure, so that the inserted suture needle can directly push the guide wire out of the needle mounting hole.

[0262] In the above structure, after the suture needle is connected to the corresponding needle mounting base, the needle tip portion of the suture needle forms a backfolding assembly structure toward the handle portion at the needle mounting base.

[0263] In the endoscopic puncture hole suturing operation, the suture needle assembled on the corresponding operating rod is inserted into the endoscopic puncture hole together with the operating rod, and is driven by the handle portion to perform the suture needle insertion at the puncture hole; after the suture needle insertion at the puncture hole is completed, the suture needle can be disassembled and separated from the needle mounting base of the corresponding operating rod, and is pulled out of the human tissue alone.

[0264] The suture device with the above structure needs to be miniaturized in diameter during forming to adapt to the suture of small puncture holes, such as a 5mm diameter punch channel, which is limited by the small structure and increases the assembly difficulty. No matter the extension part of the operating rod on the top side of the handle part (i.e. the upper part) or the operating part of each operating rod passing through the guide wire and needle locking mechanism at the upper end, the mutual position interference is easy to occur during the corresponding operation, and the misoperation is easy to occur and the operation difficulty is increased. Therefore, the upper part of the two operating rods is formed in a slanting bending structure (oblique bending or arc bending), and in the assembly structure with the handle part, the upper part of the two operating rods needs to protrude through the assembly hole and be located on the top side of the handle part, so that the slanting bending structures of the two operating rods are arranged in a bifurcated manner away from each other on the top side of the handle part, which is similar to a Y-shaped structure.

[0265] According to the assembly structure of the slanting bending structure of the operating rod on the handle part, on the one hand, the assembly of the vertical section of the operating rod in the assembly hole of the handle part is maintained, and the rotation of the operating rod in the handle part for needle closing and opening is not affected; on the other hand, since the needle closing and opening operation of the operating rod is not a full circle rotation, but only a half circle or even a quarter circle rotation, the slanting bending structures of the two operating rods will not interfere with each other during the rotation of the needle closing and opening; and on the third hand, the arrangement space of the two operating rods on the top side of the handle part is increased, which is beneficial to the assembly of the guide wire and needle locking mechanism, the easy, convenient and accurate driving operation of the operating rod for the rotation of the needle closing and opening, and the easy, convenient and accurate operation of the guide wire and needle locking mechanism passing through each operating rod at the end of the slanting bending structure of the operating rod.

[0266] Embodiment 8

[0267] The suture device of the utility model is improved on the technology disclosed in CN 117562600 A or CN 117530736 A, and the detailed description of the suture device is mainly focused on the technical contribution part of the utility model and the part associated with the technical contribution of the utility model. The rest of the structure not described in detail is disclosed in the technology of CN 117562600 A or CN 117530736 A. Of course, when there is a conflict between the structure disclosed in CN 117562600 A or CN 117530736 A and the utility model, the structure described in the utility model should be used as the reference.

[0268] The suture device of the utility model includes a handle part, a steering mechanism, a guide wire and needle locking mechanism and a suture needle.

[0269] Specifically, the middle part of the handle part has a guide cylinder with a hollow cylinder structure protruding outward.

[0270] The middle top side of the handle part has an outwardly convex steering base, which is internally formed with two groups of through rod channels. Each group of through rod channels is composed of a vertical straight hole section and a horizontal arcuate slit, which is substantially centered on the vertical straight hole section, the bottom end of which penetrates into the guide cylinder and the top end of which penetrates into the top of the steering base, i.e. the horizontal arcuate slit and the vertical straight hole section of the same group of through rod channels substantially form a T-shaped fitting structure. The vertical straight hole sections of the two groups of through rod channels on the steering base form a spaced arrangement structure on the steering base covered by the guide cylinder.

[0271] The steering mechanism is mainly composed of a steering drive ring and two operating rods.

[0272] The steering drive ring is a flexible structure, which is sleeved on the steering base of the handle part and can produce a semi-ring rotating action along the circumference of the steering base. The steering drive ring blocks the horizontal arcuate slits of the two groups of through rod channels on the steering base.

[0273] The upper part of each operating rod is a bent structure, which has a horizontal section, a vertical section and a locking wire section.

[0274] The two operating rods correspond to the two groups of through rod channels on the handle part, i.e. the horizontal section of the upper part of the operating rod radially penetrates into the horizontal arcuate slit of the corresponding through rod channel of the steering base, is connected with the steering drive ring sleeved on the outer circumference of the steering base, the vertical section of the operating rod axially penetrates into the guide cylinder from the side of the steering base through the vertical straight hole section of the corresponding through rod channel of the steering base, extends into the guide cylinder of the handle part, and the lower end of the operating rod extends out of the guide cylinder of the handle part. The locking wire section is protrusively formed at the transition between the horizontal section and the vertical section, substantially forms a coaxial fitting with the vertical section, and axially penetrates into the steering base from the top side (i.e. the side opposite to the side of the guide cylinder) through the vertical straight hole section of the corresponding through rod channel of the steering base. In this way, the upper part of the operating rod substantially forms a T-shaped structure in the corresponding through rod channel of the steering base. Of course, in order to meet the rotating retracting / extension action of the operating rod in the steering base, the operating rod is rotatably and relatively freely arranged in the corresponding through rod channel of the steering base.

[0275] In the above basic structure, the needle mounting base of each operating rod is outwardly convexly formed at the lower end thereof, and the maximum outer diameter of the needle mounting base is smaller than the inner diameter of the trocar channel through which the guide cylinder of the handle portion is to pass. When the above steering drive ring is circumferentially rotated around the outer periphery of the steering base, the two operating rods are driven to synchronously rotate on the handle portion, and in the synchronous rotating action of the two operating rods, the needle mounting bases of the lower ends of the two operating rods are formed to be close to each other in the retracted state or to be away from each other in the expanded state. In the retracted state of the needle mounting bases of the two operating rods, the needle mounting bases are within the axial accommodation coverage of the trocar channel through which the guide cylinder of the handle portion is to pass during the surgical operation, so as to ensure that the two operating rods can reliably pass through the trocar channel. In the expanded state of the needle mounting bases of the two operating rods, the maximum outer edges of the needle mounting bases are outside the axial accommodation coverage of the trocar channel through which the guide cylinder of the handle portion is to pass during the surgical operation, so as to enable the two operating rods to mount the suture needle.

[0276] Of course, in order to facilitate the close retraction of the needle mounting bases of the two operating rods, the needle mounting base of each operating rod is formed to be approximately plate-shaped with a slightly increased thickness in the thickness direction of the expanded state. In order to improve safety, the outer profile of the needle mounting base is formed to be rounded and / or curved without sharp edges, and in particular, the bottom end thereof is substantially formed to be a spherical cap surface.

[0277] On the needle mounting base of each operating rod, a needle mounting hole is formed in an inwardly recessed structure at the outer edge of the expanded state, and the hole opening of the needle mounting hole faces the handle portion side. At the position where the needle mounting base is formed with the needle mounting hole, a beveled structure with a low outer edge and a high inner side is formed, so that the trocar channel through which the guide cylinder is to pass can be extruded and accommodated, and even after deformation occurs, the reliability of exiting the trocar channel is improved.

[0278] The suture needle is detachably assembled in the needle mounting hole of the corresponding needle mounting base, that is, the operating rod is connected with the corresponding suture needle in a detachable structure through the needle mounting base. In order to realize suture threading, a threading hole is formed on the suture needle, and the suture thread is connected with the suture needle through the threading hole. In order to prevent the suture needle from being lost and taken out after being separated from the needle mounting base, the threading hole on the suture needle is formed adjacent to the hole opening of the needle mounting hole on the corresponding needle mounting base, so that the threading hole is formed in a non-central region of the suture needle in the height direction and is adjacent to the needle tail portion; at the same time, the end surface of the needle tail portion of the suture needle is a smooth curved surface structure (or a spherical cap surface structure), and the suture needle is assembled in the needle mounting hole of the corresponding needle mounting base through the needle tail portion.

[0279] The suture needle is simply assembled in the needle mounting hole of the corresponding needle mounting base in a plug-in structure, and there is a high risk of separation, and the guide wire locking needle mechanism is specially designed to eliminate this risk.

[0280] The guide wire locking needle mechanism has a guide wire and a tension spring. In order to enable the operating rod of the steering mechanism to effectively combine with the guide wire of the guide wire locking needle mechanism, each operating rod of the steering mechanism has the following structure.

[0281] The vertical section and the wire locking section of the operating rod are hollow structures, and the hollow hole of the wire locking section is axially through the hollow hole of the vertical section, thereby forming a hollow hole capable of accommodating the guide wire in the operating rod. The hollow hole of the operating rod is through the needle mounting hole on the lower end needle mounting base, that is, the hollow hole of the operating rod is through the needle mounting hole on the needle mounting base.

[0282] The guide wire of the guide wire locking needle mechanism is accommodated in the hollow hole of the corresponding operating rod, and the lower end of the guide wire extends to the needle mounting hole of the corresponding needle mounting base. The upper end of the guide wire extends out of the top end of the wire locking section of the operating rod, thereby vertically extending out of the steering base and forming a protrusion on the top of the steering base. Since the upper end of the guide wire extends axially out of the steering base of the handle part through the wire locking section of the operating rod, the tension spring is sleeved on the guide wire at the wire locking section for convenient arrangement and control, and is above the horizontal section and the vertical section of the operating rod.

[0283] The guide wire further has a radially outward protruding limiting boss in the wire locking section, which forms a height difference cooperation with the opposite structure below. The tension spring one in the wire locking section abuts against the limiting boss of the guide wire at the lower end.

[0284] In the wire locking section, a limiting nut is connected by a threaded structure, that is, the inner wall of the upper end of the wire locking section is a threaded structure, which is connected with a matching limiting nut by a threaded structure, so that the limiting nut does not have a direct connection relationship with the steering base and can rotate on the steering base with the rotation of the operating rod. The limiting nut has a hole for leading out the guide wire, that is, the limiting nut for the guide wire to pass through freely is threadedly connected in the wire locking section. The limiting nut is above the limiting boss on the guide wire, and the upper end of the tension spring one abuts against the limiting nut.

[0285] In this way, the tension spring one forms an axial downward pressure on the guide wire combined in the operating rod in the downward end direction; in the initial state, the lower end of the guide wire pressed axially by the elastic tension of the tension spring one extends into the needle mounting hole of the corresponding needle mounting base, and abuts against the suture needle inserted into the needle mounting hole; when the needle locking state is released, the guide wire is lifted up at the handle part, so that the lower end of the guide wire exits the needle mounting hole of the corresponding needle mounting base, and the abutting limiting position of the suture needle is released; of course, the lifted guide wire compresses the tension spring one, and once the compression is released, the guide wire is automatically reset under the action of the tension spring.

[0286] In the above structure, since the pre-tightening structure of the axial downward pressing of the guide wire, i.e. the tension spring one, does not contact and cooperate with the steering base, the axial downward pressing pre-tightening structure of the guide wire can rotate with the rotation of the operating rod, the rotation operation is flexible, and the rotation of the operating rod is not hindered by the axial downward pressing pre-tightening structure of the guide wire.

[0287] In the above structure, in order to facilitate the upward pulling of the guide wire, the guide wire extends out of the upper end of the steering base and has a protruding structure (of course, knurling can also be used instead) for pulling operation, and of course, the protruding structure can limit the axial downward pressing of the tension spring one.

[0288] In order to improve the stability of the suture needle inserted into the needle mounting hole of the needle mounting base, a limiting groove is formed in the needle tail portion of the suture needle in a concave structure (of course, a non-smooth friction-increasing structure such as a protruding point can also be used instead). After the suture needle is inserted into the needle mounting hole of the needle mounting base, the lower end of the guide wire abuts against the limiting groove of the needle tail portion of the suture needle. Preferably, the lower end of the guide wire is a curved surface structure, so that the inserted suture needle can directly push the guide wire out of the needle mounting hole.

[0289] The above structure of the suture device, after the suture needle is connected to the corresponding needle mounting base, the needle tip portion of the suture needle forms a backfolding assembly structure towards the handle portion at the needle mounting base.

[0290] In the operation of laparoscope puncture hole suturing, the suture needle assembled on the corresponding operating rod is inserted into the laparoscope puncture hole together with the operating rod, and is driven by the handle portion to perform suture and needle insertion at the puncture hole; after the suture and needle insertion at the puncture hole is completed, the suture needle can be disassembled from the needle mounting base of the corresponding operating rod to be pulled out of the human tissue alone.

[0291] Embodiment 9

[0292] The suture device of the utility model is improved on the technology disclosed in CN 117562600 A or CN 117530736 A, and the detailed description of the suture device is as follows, mainly focusing on the technical contribution part of the utility model and the part associated with the technical contribution of the utility model, and the rest of the structure not described in detail is disclosed in the technology of CN 117562600 A or CN 117530736 A. Of course, when there is a conflict between the structure disclosed in CN 117562600 A or CN 117530736 A and the utility model, the structure described in the utility model shall prevail.

[0293] The suture device of the utility model comprises a handle portion, a steering mechanism, a guide wire and needle locking mechanism and a suture needle.

[0294] Specifically, at the middle bottom side of the handle part, there is a guide cylinder with an outward convex hollow cylindrical structure.

[0295] At the middle top side of the handle part, there is a steering base with an outward convex structure, in which two groups of through-hole channels are formed. Each group of through-hole channels is composed of a vertical straight hole segment and a horizontal arc segment, which is basically centered on the vertical straight hole segment. The bottom end of the vertical straight hole segment penetrates into the guide cylinder, and the top end penetrates into the top of the steering base, i.e., the horizontal arc segment and the vertical straight hole segment of the same group of through-hole channels basically form a T-shaped structure. The vertical straight hole segments of the two groups of through-hole channels on the steering base form a spaced arrangement structure on the steering base covered by the guide cylinder.

[0296] The steering mechanism is mainly composed of a steering drive ring and two operating rods.

[0297] The steering drive ring is a flexible structure, which is sleeved on the steering base of the handle part and can produce a half-ring rotating action along the circumference of the steering base. The steering drive ring blocks the horizontal arc segments of the two groups of through-hole channels on the steering base.

[0298] The upper part of each operating rod is a bending structure, which has a horizontal segment, a vertical segment, and a locking wire segment. The horizontal segment is formed on the vertical segment, and the locking wire segment is formed on the top end of the vertical segment in an oblique bending structure.

[0299] The two operating rods correspond to the two groups of through-hole channels on the handle part, i.e., the upper horizontal segment of the operating rod radially penetrates into the horizontal arc segment of the corresponding through-hole channel of the steering base, connects with the steering drive ring sleeved on the outer circumference of the steering base, the vertical segment of the operating rod penetrates axially through the vertical straight hole segment of the corresponding through-hole channel of the steering base on one side of the guide cylinder and one side of the top of the steering base, the part penetrating out of the guide cylinder extends into the guide cylinder of the handle part, and the lower end of the operating rod extends out of the guide cylinder of the handle part. The locking wire segment is protruded and formed on the top of the steering base in an oblique bending structure on the top end of the vertical segment, so it does not penetrate through the vertical straight hole segment of the corresponding through-hole channel of the steering base, but protrudes from the top of the steering base in the penetrating structure of the vertical segment and the steering base. In this way, the upper part of the operating rod basically forms a T-shaped structure in the corresponding through-hole channel of the steering base. Of course, in order to meet the rotating retracting / extending action of the operating rod in the steering base, the operating rod is assembled in the corresponding through-hole channel of the steering base in a rotatable relative free movement structure.

[0300] In the above basic structure, the needle mounting base of each operating rod is outwardly convexly formed at the lower end thereof, and the maximum outer diameter of the needle mounting base is smaller than the inner diameter of the trocar channel through which the guide cylinder of the handle portion is to pass. When the above-mentioned steering drive ring is circumferentially rotated around the outer periphery of the steering base, the two operating rods are driven to synchronously rotate on the handle portion, and in their synchronous rotating action, the needle mounting bases of the lower ends of the two operating rods are formed to be close to each other or to be away from each other. In the close state of the two operating rods, the needle mounting bases are within the axial accommodation coverage of the trocar channel through which the guide cylinder of the handle portion is to pass during the surgical operation, so as to ensure that the guide cylinder can reliably pass through the trocar channel. In the away state of the two operating rods, the maximum outer edge of the needle mounting bases is outside the axial accommodation coverage of the trocar channel through which the guide cylinder of the handle portion is to pass during the surgical operation, so as to enable the suture needle to be mounted.

[0301] Of course, in order to facilitate the close approach of the needle mounting bases of the two operating rods, the needle mounting base of each operating rod is formed to be approximately plate-shaped with a slightly greater thickness in the thickness direction of the away state. In order to improve safety, the outer contour of the needle mounting base is formed with a rounded corner and / or curved surface structure without sharp edges, and in particular, the bottom end thereof is substantially formed with a spherical cap surface structure.

[0302] On the needle mounting base of each operating rod, a needle mounting hole is formed with a concave structure at the outer edge of the away state, and the hole opening thereof faces the handle portion side. At the position where the needle mounting base is formed with the needle mounting hole, a bevel structure with a low outer edge and a high inner side is formed, so that the trocar channel through which the guide cylinder is to pass can be accommodated by extrusion, and even after deformation occurs, the reliability of exiting the trocar channel is improved.

[0303] The suture needle is detachably assembled in the needle mounting hole of the corresponding needle mounting base, that is, the operating rod is connected with the corresponding suture needle through the needle mounting base in a detachable structure. In order to realize suture lead threading, a threading hole is provided on the suture needle, and the suture thread is connected with the suture needle through the threading hole. In order to prevent the suture needle from being lost and taken out after being separated from the needle mounting base, the threading hole on the suture needle is formed adjacent to the hole opening position of the needle mounting hole on the corresponding needle mounting base, so that the threading hole is formed in a non-central region of the suture needle in the height direction and is close to the needle tail portion; at the same time, the end face of the needle tail portion of the suture needle is a smooth curved surface structure (or a spherical cap surface structure), and the suture needle is assembled in the needle mounting hole of the corresponding needle mounting base through the needle tail portion.

[0304] The suture needle is simply assembled in the needle mounting hole of the corresponding needle mounting base in a detachable structure, and there is a great risk of separation, and the guide wire locking needle mechanism is specially designed to eliminate this risk.

[0305] The guide wire locking needle mechanism has a guide wire and a tension spring. In order to effectively combine the operating rod of the steering mechanism with the guide wire of the guide wire locking needle mechanism, each operating rod of the steering mechanism has the following structure.

[0306] The vertical section and the wire locking section of the operating rod are hollow structures, and the hollow hole of the wire locking section is axially through the hollow hole of the vertical section, thereby forming a hollow hole in the operating rod that can accommodate the guide wire. The hollow hole of the operating rod is through the needle mounting hole on the lower end needle mounting base, that is, the hollow hole of the operating rod is through the needle mounting hole on the needle mounting base.

[0307] The guide wire of the guide wire locking needle mechanism is accommodated in the hollow hole of the corresponding operating rod, and the lower end of the guide wire extends to the needle mounting hole of the corresponding needle mounting base. The upper end of the guide wire extends out of the top end of the wire locking section of the operating rod, thereby vertically extending out of the steering base and forming a protrusion on the top of the steering base. Since the upper end of the guide wire extends out of the steering base of the handle through the wire locking section of the operating rod, the tension spring is sleeved on the guide wire at the wire locking section for easy arrangement and control, and is above the horizontal section and the vertical section of the operating rod.

[0308] The guide wire also has a radially outward protruding limiting boss in the wire locking section, which forms a height difference with the opposite structure below. The tension spring one in the wire locking section abuts against the limiting boss of the guide wire at the lower end.

[0309] In the wire locking section, a limiting nut is connected by a threaded structure, that is, the inner wall of the upper end of the wire locking section is a threaded structure, which is connected with a matching limiting nut by a threaded structure, so that the limiting nut does not have a direct connection relationship with the steering base and can rotate with the steering base as the operating rod rotates. The limiting nut has a hole for leading the guide wire, that is, the limiting nut is threadedly connected in the wire locking section to allow the guide wire to pass freely. The limiting nut is above the limiting boss on the guide wire, and the upper end of the tension spring one abuts against the limiting nut.

[0310] In this way, the tension spring one axially presses downward on the guide wire combined in the operating rod; in the initial state, the lower end of the guide wire pressed downward by the elastic tension of the tension spring one extends into the needle mounting hole of the corresponding needle mounting base, and abuts against the suture needle inserted into the needle mounting hole; when the needle locking state is released, the guide wire is lifted up at the handle to make the lower end of the guide wire exit the needle mounting hole of the corresponding needle mounting base, thereby releasing the abutting limit of the suture needle. Of course, the lifted guide wire compresses the tension spring one, and once it is released, the guide wire is automatically reset under the action of the tension spring.

[0311] In the above structure, since the pre-tightening structure of the axial downward pressing of the guide wire, i.e. the tension spring one, does not contact and cooperate with the steering base, the axial downward pressing pre-tightening structure of the guide wire can rotate with the rotation of the operating rod, and the rotation operation is flexible, and the rotation of the operating rod is not hindered by the axial downward pressing pre-tightening structure of the guide wire.

[0312] In the above structure, in order to facilitate the upward pulling of the guide wire, the guide wire extends out of the upper end of the steering base and has a protruding structure (of course, knurling can also be used to increase friction) for pulling operation. Of course, the protruding structure can limit the axial downward pressing of the tension spring one.

[0313] In order to improve the stability of the suture needle inserted into the needle mounting hole of the needle mounting base, a limiting groove is formed in the needle tail of the suture needle in a concave structure (of course, a non-smooth friction-increasing structure such as a protruding point can also be used instead). After the suture needle is inserted into the needle mounting hole of the needle mounting base, the lower end of the guide wire abuts against the limiting groove of the needle tail of the suture needle. Preferably, the lower end of the guide wire is a curved surface structure, so that the inserted suture needle can directly push the guide wire out of the needle mounting hole.

[0314] The above structure of the suture device, after the suture needle is connected in place on the corresponding needle mounting base, the needle tip of the suture needle forms a backfolding assembly structure at the needle mounting base towards the handle portion.

[0315] In the operation of laparoscope puncture hole suturing, the suture needle assembled on the corresponding operating rod is inserted into the laparoscope puncture hole together with the operating rod, and is driven by the handle portion to perform suture and needle insertion at the puncture hole; after the suture and needle insertion at the puncture hole is completed, the suture needle can be disassembled from the needle mounting base of the corresponding operating rod to be pulled out of the human tissue alone.

[0316] The above structure of the suture device is adapted to the suturing of small size puncture holes, such as a 5mm diameter punch channel. Due to the small size of the formed diameter structure, the assembly technology is difficult, and the operation part of each operating rod at the upper end of the guide wire locking needle mechanism is easily interfered with each other during corresponding operation, which is prone to misoperation and increases the operation difficulty. Therefore, the upper parts of the above two operating rods are formed in a slanted bending structure (oblique bending or arc bending) at the top of the vertical section (i.e. above the horizontal section), and the locking wire section is formed in a slanted bending structure (oblique bending or arc bending) at the top of the vertical section (i.e. above the horizontal section). The locking wire section protrudes from the top of the steering base without being inserted into the steering base. In this way, the locking wire sections of the two operating rods are arranged in a bifurcated manner away from each other at the top of the steering base, which is similar to a Y-shaped structure.

[0317] According to the structure of the handle part of the operating rod penetrating the base, on the one hand, the vertical section of the operating rod is still penetrated in the penetrating hole of the base, and the rotation of the operating rod at the base for needle closing and opening is not affected; on the other hand, due to the non-circular rotation of the needle closing and opening operation of the operating rod, only half or even 1 / 4 circular rotation, the position interference of the locking wire sections of the two operating rods during the rotation of the needle closing and opening is avoided; and the arrangement space of the locking wire sections of the two operating rods at the top of the base is increased, which is beneficial to the assembly of the guide wire locking needle mechanism and the easy, convenient and accurate operation of the guide wire locking needle mechanism of each operating rod at the end of the locking wire section of the operating rod.

[0318] Of course, the embodiment can also be transformed, that is, the locking wire section of the operating rod is formed in a slanting and bending convex structure at the transition of the upper transverse section and the vertical section; and the base only forms the penetrating hole of the vertical section in the axial direction, and the penetrating slot of the transverse section is still communicated with the penetrating hole of the vertical section, and a cavity for accommodating the locking wire section of the operating rod is formed at the top of the base between the penetrating hole of the vertical section and the penetrating slot of the transverse section, and the forming space of the cavity allows the locking wire section to rotate freely with the rotation of the vertical section of the operating rod in the base, without rotating the locking wire section.

[0319] Embodiment 10

[0320] The other contents of the embodiment are the same as those of Embodiment 1, Embodiment 5, Embodiment 6, Embodiment 7, Embodiment 8 or Embodiment 9, except that:

[0321] The tension spring of the guide wire locking needle mechanism is arranged in the needle mounting base at the lower end of the operating rod, that is, the tension spring is sleeved on the guide wire in the needle mounting base, an upper end abutting step is formed at the penetrating hole of the tension spring in the needle mounting base, and a limiting boss is formed on the guide wire at the lower end of the penetrating hole of the tension spring, and the tension spring abuts between the upper end step and the lower end limiting boss.

[0322] Although the embodiment can reliably press the guide wire axially downward, the structure of the needle mounting base is miniaturized, which increases the difficulty of assembly.

[0323] Embodiment 11

[0324] The suture device of the utility model is improved on the technology of CN 117562600 A or CN 117530736 A, so the following detailed description of the suture device mainly focuses on the technical contribution part of the utility model and the part associated with the technical contribution of the utility model, and the rest of the structure not described in detail is subject to the technology disclosed in CN 117562600 A or CN 117530736 A. Of course, when there is a conflict between the structure disclosed in CN 117562600 A or CN 117530736 A and the utility model, the structure described in the utility model shall prevail.

[0325] The suture device of the utility model includes a handle part, a steering mechanism, a spring pin lock needle mechanism and a suture needle.

[0326] Specifically, the middle bottom side of the handle part has a guide cylinder with a hollow cylinder structure.

[0327] The middle top side of the handle part has an outwardly convex steering base, and two groups of through rod channels are formed in the steering base. Each group of through rod channels is composed of a vertical straight hole section and a horizontal arc seam, and the horizontal arc seam is basically centered on the vertical straight hole section, and the vertical straight hole section penetrates into the guide cylinder. The vertical straight hole sections of the two groups of through rod channels on the steering base form a spaced arrangement structure within the coverage range of the guide cylinder.

[0328] The steering mechanism mainly consists of a steering drive ring and two operating rods.

[0329] The steering drive ring is a flexible structure, which is sleeved on the steering base of the handle part and can produce a half-ring rotating action along the circumference of the steering base. The steering drive ring blocks the horizontal arc seams of the two groups of through rod channels on the steering base.

[0330] The upper part of each operating rod is a bent structure with a horizontal section and a vertical section.

[0331] The two operating rods correspond to the two groups of through rod channels on the handle part, that is, the horizontal section of the operating rod radially penetrates into the horizontal arc seam of the corresponding through rod channel of the steering base, and is connected with the steering drive ring sleeved on the outer circumference of the steering base. The vertical section of the operating rod axially penetrates through the vertical straight hole section of the corresponding through rod channel of the steering base and extends into the guide cylinder of the handle part, and the lower end of the operating rod extends out of the guide cylinder of the handle part.

[0332] In the above basic structure, the needle mounting base of each operating rod is outwardly convexly formed at the lower end thereof, and the maximum outer diameter of the needle mounting base is smaller than the inner diameter of the trocar channel through which the guide cylinder of the handle portion is to pass. When the above-mentioned steering drive ring is circumferentially rotated around the outer periphery of the steering base, the two operating rods are driven to synchronously rotate on the handle portion, and in their synchronous rotating action, the needle mounting bases of the lower ends of the two operating rods are formed to be close to each other or to be away from each other. In the close state, the needle mounting bases of the two operating rods are within the axial accommodation coverage of the trocar channel through which the guide cylinder of the handle portion is to pass during the surgical operation, so as to ensure that the guide cylinder can reliably pass through the trocar channel. In the away state, the maximum outer edge of the needle mounting bases of the two operating rods is outside the axial accommodation coverage of the trocar channel through which the guide cylinder of the handle portion is to pass during the surgical operation, so as to enable the suture needle to be mounted.

[0333] Of course, in order to facilitate the close-together of the needle mounting bases of the two operating rods, the needle mounting base of each operating rod is formed to be approximately plate-shaped with a slightly greater thickness in the thickness direction of the away state. In order to improve safety, the outer contour of the needle mounting base is formed with a rounded corner and / or curved surface structure without sharp edges, and in particular, the bottom end thereof is substantially formed with a spherical cap surface structure.

[0334] On the needle mounting base of each operating rod, a needle mounting hole is formed with a concave structure at the outer edge of the away state, and the hole opening thereof faces toward the handle portion side. At the position where the needle mounting base is formed with the needle mounting hole, a slope structure with a low outer edge and a high inner side is formed, so that the trocar channel through which the guide cylinder is to pass can be accommodated by extrusion thereon, and even after deformation occurs, the reliability of exiting the trocar channel is improved.

[0335] The suture needle is detachably assembled in the needle mounting hole of the corresponding needle mounting base, that is, the operating rod is connected with the corresponding suture needle in a detachable manner through the needle mounting base.

[0336] In order to realize the suture lead, a threading hole is formed on the suture needle, and the suture thread is connected with the suture needle through the threading hole. In order to prevent the suture needle from being lost and taken out after being separated from the needle mounting base, the threading hole on the suture needle is formed at a position adjacent to the hole opening of the needle mounting hole on the corresponding needle mounting base, so that the threading hole is formed in a non-central region of the suture needle in the height direction and is close to the needle tail portion; at the same time, the end face of the needle tail portion of the suture needle is a smooth curved surface structure (or a spherical cap surface structure), and the suture needle is assembled in the needle mounting hole of the corresponding needle mounting base through the needle tail portion.

[0337] The suture needle is simply assembled in the needle mounting hole of the corresponding needle mounting base in a plug-in structure, and there is a great risk of separation, and the spring pin locking needle mechanism is specially designed to eliminate this risk.

[0338] The elastic pin hole is arranged on the operating rod above the needle mounting base and leads to the needle mounting hole.

[0339] The spring pin needle locking mechanism has a pin head assembled in the elastic pin hole of the operating rod and a tension spring II, one end of the tension spring II abutting at the inner end of the elastic pin hole of the operating rod, the other end of the tension spring II abutting on the pin head, the pin head being a thin and long structure of a guide wire.

[0340] In order to improve the controllability of the suture needle in the needle mounting hole of the needle mounting base, the cross-sectional profile of the needle mounting hole on the needle mounting base is a circular hole structure, and the pin head of the spring pin needle locking mechanism extends into the needle mounting hole in a spherical cap surface structure.

[0341] The suture needle is inserted into the needle mounting hole of the needle mounting base, and the curved surface of the end surface of the needle tail pushes the curved surface structure of the pin head, so that the pin head is axially retracted and withdrawn from the needle mounting hole.

[0342] In the laparoscope puncture hole suturing operation, the suture needle assembled on the corresponding operating rod is inserted into the laparoscope puncture hole together with the operating rod, and is driven by the handle to perform the puncture hole suturing; after the puncture hole suturing is completed, the suture needle can be disassembled from the needle mounting base of the corresponding operating rod to be pulled out of the human tissue alone.

[0343] The above embodiments are only used to illustrate the present application, but not to limit it.

[0344] Although the present application is described in detail with reference to the above embodiments, those skilled in the art should understand that the above embodiments can be modified, or some technical features can be replaced by equivalent ones, for example:

[0345] 1. The suture needle is assembled on the needle mounting base at the lower end of the operating rod in a threaded structure, that is, the spring pin lock needle mechanism is removed on the basis of Embodiment 2, and a connecting thread is formed in the needle mounting hole of the needle mounting base, and the needle tail of the suture needle is formed with a connecting thread, and the two are combined together in a threaded manner;

[0346] 2. The suture needle is assembled on the needle mounting base at the lower end of the operating rod in a threaded structure, that is, the spring pin lock needle mechanism is removed on the basis of Embodiment 2, and a convex threaded column is formed at the needle mounting hole, and a threaded hole is formed in the needle tail of the suture needle, and the two are combined together in a threaded manner;

[0347] 3. The suture needle is assembled on the needle mounting base at the lower end of the operating rod in a magnetic attraction structure, that is, the spring pin lock needle mechanism is removed on the basis of Embodiment 2, and a magnetic attraction structure is arranged in the needle mounting hole of the needle mounting base, and when the needle tail of the suture needle is inserted into the needle mounting hole, the two are combined together by the magnetic attraction structure; of course, the magnetic attraction structure has the problem of magnetic radiation, which may interfere with the normal use of other instruments, and therefore the magnetic attraction structure needs to be magnetically shielded to form a directional magnet in the direction of the needle mounting hole.

[0348] The above modifications or replacements can achieve the technical purpose of the present application, but the technical effect is obviously inferior to the above Embodiments 1 to 11. These modifications or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the present application.

Claims

1. A suture device for laparoscopic puncture hole suturing, comprising a handle portion (1) and two operating rods (22) rotatably assembled on the handle portion (1); the lower ends of the two operating rods (22) each have an outwardly convex needle connecting portion, and the lower ends of the two operating rods (22) extend out of the guide cylinder of the handle portion (1); in the separate or synchronous rotating action of the two operating rods (22), the needle connecting portions of the lower ends of the two operating rods (22) are folded or unfolded; when the needle connecting portions of the two operating rods (22) are in the folded state, they are contained in the axial accommodation range of the puncture card channel to be passed through by the guide cylinder of the handle portion (1) during the operation; characterized in that: at the lower end of each operating rod (22), there is an outwardly convex needle mounting base (23), and a suture needle (4) is detachably connected to the needle mounting base (23); after the suture needle (4) is connected in place on the needle mounting base (23), the suture needle (4) forms a backfolding assembly structure at the needle mounting base (23) towards the handle portion (1); during the laparoscopic puncture hole suturing operation, the suture needle (4) assembled on the corresponding operating rod (22) penetrates into the laparoscopic puncture hole together with the operating rod (22), and performs the suture needle penetration at the puncture hole under the driving of the handle portion (1); after the suture needle penetration at the puncture hole is completed, the suture needle (4) can be separated from the needle mounting base (23) of the corresponding operating rod (22) and independently penetrate out of the human tissue.

2. The suture device for laparoscopic puncture hole suturing according to claim 1, characterized in that: the operating rod (22) has at least a hollow section, and the hollow section of the operating rod (22) penetrates through the corresponding needle mounting base (23); the needle mounting base (23) has a needle mounting hole (24) with an inwardly recessed structure, and the hollow section of the operating rod (22) penetrates into the needle mounting hole (24) on the needle mounting base (23); correspondingly, the suture device also has a guide wire needle locking mechanism (3) which has at least a guide wire (31); the guide wire (31) is arranged in the hollow section of the corresponding operating rod (22), and the lower end of the guide wire (31) extends to the needle mounting hole (24) of the corresponding needle mounting base (23), and the upper end of the guide wire (31) directly or indirectly extends out of the handle portion (1); the guide wire (31) is connected with a pre-tightening structure for axially pressing the guide wire (31); in the initial state, the axially pressing pre-tightening structure connected with the guide wire (31) forms an axial pressing pre-tightening on the guide wire (31), so that the lower end of the guide wire (31) extends into the needle mounting hole (24) of the corresponding needle mounting base (23) to abut and limit the suture needle (4) inserted into the needle mounting hole (24); in the needle unlocking state, the axially pressing pre-tightening structure connected with the guide wire (31) is lifted, so that the lower end of the guide wire (31) exits the needle mounting hole (24) of the corresponding needle mounting base (23).

3. The suture device for laparoscopic puncture hole suturing according to claim 2, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The guide wire locking needle mechanism (3) further has a tension spring one (32) that axially presses down the guide wire (31) in the operating rod (22) to form a downward end direction; The tension spring one (32) is sleeved in the guide wire (31) wearing structure, the guide wire (31) has a radial outward convex limiting boss (34), the guide wire wearing opposite structure has a fixed limiting structure upstream of the limiting boss (34), the lower end of the tension spring one (32) abuts against the limiting boss (34), and the upper end of the tension spring one (32) abuts against the fixed limiting structure on the guide wire wearing opposite structure; In the initial state, the tension spring one (32) axially presses down the lower end of the guide wire (31) into the needle mounting hole (24) of the corresponding needle mounting base (23), and abuts against and limits the suture needle (4) inserted into the needle mounting hole (24); In the needle locking release state, the lower end of the guide wire (31) is lifted from the handle part (1) to exit the needle mounting hole (24) of the corresponding needle mounting base (23).

4. The suture device for endoscope puncture hole suture according to claim 2 or 3, characterized in that: The upper part of the operating rod (22) is a bent structure, and the operating rod (22) has a horizontal section and a vertical section; The horizontal section of the operating rod (22) radially penetrates out of the steering base (13) of the handle part (1) and is connected with the steering drive ring (21) sleeved on the outer periphery of the steering base (13); The vertical section of the operating rod (22) extends out of the guide cylinder of the handle part (1), and the vertical section of the operating rod (22) is a hollow structure and has a hollow channel for wearing the guide wire (31); The upper end of the guide wire (31) axially extends out of the steering base (13) of the handle part (1); The axial downward pressing pre-tightening structure connected with the guide wire (31) is assembled at the steering base (13).

5. The suture device for endoscope puncture hole suture according to claim 4, characterized in that: The transition of the horizontal section and the vertical section of the operating rod (22) has a hollow locking wire section (25) that axially protrudes along the vertical section, and the hollow channel of the locking wire section (25) communicates with the hollow channel of the vertical section of the operating rod (22); In the assembly structure of the steering base (13) of the handle part (1), the locking wire section (25) of the operating rod (22) is arranged or extends axially out of the steering base (13); The guide wire (31) worn in the hollow channel of the vertical section of the operating rod (22) has an upper end that directly or indirectly axially extends out of the locking wire section (25) of the operating rod (22), and the axial downward pressing pre-tightening structure connected with the guide wire (31) is assembled in the hollow channel of the locking wire section (25) and is non-fixedly matched with the steering base (13).

6. The suture device for endoscope puncture hole suture according to claim 5, characterized in that: The locking wire section (25) on the operating rod (22) forms an inclined bent structure at the upper end of the vertical section; In the assembly structure with the steering base (13) of the handle part (1), the locking wire section (25) of the operating rod (22) protrudes from the steering base (13) and is located at the top of the steering base (13); or the locking wire section (25) of the operating rod (22) is located inside the steering base (13), but the steering base (13) is used as a hollow structure for allowing the rotation of the operating rod (22); The locking wire sections (25) of the two operating rods (22) are arranged in a diverging structure at the assembly of the steering base (13).

7. The suture device for suture of a puncture hole of a laparoscope according to claim 2 or 3, characterized in that: The upper part of the operating rod (22) is a vertical structure or an inclined curved structure, the upper end of the operating rod (22) extends axially out of the steering base (13) of the handle part (1), and the upper end of the operating rod (22) extending out of the steering base (13) is used as a driving rotation; The operating rod (22) is a hollow structure with a hollow channel for accommodating the guide wire (31); The guide wire (31) accommodated in the hollow channel of the operating rod (22) extends axially directly or indirectly out of the upper end of the operating rod (22), and the guide wire (31) is connected to an axial downward pre-tightening structure accommodated in the upper end hollow channel of the operating rod (22) and non-fixedly matched with the steering base (13); When the upper part of the operating rod (22) is an inclined curved structure, in the assembly structure with the steering base (13) of the handle part (1), the upper part of the operating rod (22) protrudes from the steering base (13), and the upper parts of the two operating rods (22) are arranged in a diverging structure at the steering base (13).

8. The suture device for suture of a puncture hole of a laparoscope according to claim 2 or 3, characterized in that: The upper end of the guide wire (31) extending out of the guide wire accommodating opposite structure has a protruding structure and / or a friction increasing structure for pulling the guide wire (31).

9. The suture device for suture of a puncture hole of a laparoscope according to claim 2 or 3, characterized in that: The upper end of the guide wire (31) is connected with a guide wire handle (35) in a ball hinge structure; The lower part of the guide wire handle (35) is connected with the guide wire accommodating opposite structure in a threaded structure, and the upper part of the guide wire handle (35) extends axially out of the guide wire accommodating opposite structure; The guide wire handle (35) screwing into the guide wire accommodating opposite structure presses downward the guide wire (31) accommodated in the operating rod (22); The guide wire handle (35) screwing out of the guide wire accommodating opposite structure pulls upward the guide wire (31) accommodated in the operating rod (22).

10. The suture device for suture of a puncture hole of a laparoscope according to claim 2 or 3, characterized in that: The upper end of the guide wire (31) is connected with a guide wire pressing lever (37) in a hinge structure; The middle part of the guide wire pressing lever (37) is hinged on a hinge base (36) at the guide wire accommodating opposite structure; The guide wire pressing lever (37) is pivoted at the hinge base (36) and is used to lift the guide wire (31) in the operating lever (22).

11. The suture device for suturing the puncture hole of the endoscope according to claim 2, characterized in that: The suture needle (4) is used as a needle tail part inserted into the needle mounting hole (24) of the needle mounting base (23) and has an inner recess structure limiting groove (41) and / or a non-smooth friction increasing structure for abutting against the guide wire (31) to limit the movement of the guide wire (31). After the suture needle (4) is inserted into the needle mounting hole (24) of the needle mounting base (23), the lower end of the guide wire (31) abuts against the limiting groove (41) and / or the friction increasing structure of the needle tail part of the suture needle (4).

12. The suture device for suturing the puncture hole of the endoscope according to claim 11, characterized in that: The suture needle (4) is used as a part of the limiting groove (41) for abutting against the guide wire (31) and has a ring-shaped inner recess variable diameter structure.

13. The suture device for suturing the puncture hole of the endoscope according to claim 1, characterized in that: The needle mounting base (23) of the operating lever (22) has a needle mounting hole (24) with an inner recess structure; The needle mounting base (23) has a resilient pin hole leading to the needle mounting hole (24); Correspondingly, the suture device further has a spring pin needle locking mechanism (5) having a pin head (51) fitted into the resilient pin hole and a second tension spring (52) abutting between the pin head (51) and the inner end of the resilient pin hole; In the initial state, the outer end of the pin head (51) axially pushed by the second tension spring (52) extends into the needle mounting hole (24) to abut against and limit the suture needle (4) inserted into the needle mounting hole (24).

14. The suture device for suturing the puncture hole of the endoscope according to claim 1, characterized in that: The needle mounting base (23) of the operating lever (22) has a needle mounting hole (24) with an inner recess structure; The operating lever (22) above the needle mounting base (23) has a resilient pin hole leading to the needle mounting hole (24); Correspondingly, the suture device further has a spring pin needle locking mechanism (5) having a pin head (51) fitted into the resilient pin hole and a second tension spring (52) abutting between the pin head (51) and the inner end of the resilient pin hole, and the pin head (51) is a long pin structure or an elongated guide wire structure; In the initial state, the outer end of the pin head (51) axially pushed by the second tension spring (52) extends into the needle mounting hole (24) to abut against and limit the suture needle (4) inserted into the needle mounting hole (24).

15. The suture device for suturing the puncture hole of the endoscope according to claim 13 or 14, characterized in that: The needle mounting hole (24) on the needle mounting base (23) has a circular hole structure in cross section; The pin head (51) of the spring pin needle locking mechanism (5) extends into the needle mounting hole (24) in a spherical crown surface structure; The suture needle (4) is used as a needle tail part inserted into the needle accommodating hole (24) of the needle accommodating base (23), and has a limiting groove (41) with a concave structure at least at a part of the circumference to match the pin head (51). The remaining part of the circumference of the limiting groove (41) is a cylindrical structure to match the needle accommodating hole (24); After the suture needle (4) is inserted into the needle accommodating hole (24) of the needle accommodating base (23), the pin head (51) of the spring pin locking needle mechanism (5) abuts against the limiting groove (41) of the needle tail part of the suture needle (4) in a spherical cap surface structure; In the state of releasing the needle locking, the suture needle (4) is rotated circumferentially in the needle accommodating hole (24) so that the pin head (51) is extruded out of the needle accommodating hole (24).

16. The suture device for suture of a puncture hole of a laparoscope according to claim 1, characterized in that: The suture needle (4) is provided with a threading hole (42) adjacent to the part of the needle accommodating hole (24) on the corresponding needle accommodating base (23); The threading hole (42) is formed in the non-middle region of the suture needle (4) in the height direction; The end surface of the needle tail part of the suture needle (4) is a smooth curved surface structure.

17. The suture device for suture of a puncture hole of a laparoscope according to claim 1, characterized in that: The outer contour of the needle accommodating base (23) is a rounded corner and / or curved surface structure without sharp edges; The part of the needle accommodating base (23) used to form the needle accommodating hole (24) is a bevel structure with a low outer edge and a high inner side; The bottom end of the needle accommodating base (23) is a spherical cap surface structure.

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