Abdominal puncture suture device

Abstract

The present invention relates to the field of medical devices, and specifically to an abdominal puncture suture device, comprising: a cannula, provided with an axial hole with an upper end opening and a side hole provided distally; a core rod, slidably disposed in the axial hole; an expansion mechanism, disposed in the axial hole and connected to the core rod at the upper end, comprising a pair of oblique arm assemblies that can be extended and retracted through the side holes, wherein the two oblique arm assemblies are configured to be retracted into the axial hole in a retracted state and to converge and extend upward in an expanded state; a needle delivery assembly, telescopically disposed on the oblique arm assembly, the head of which is connected to the puncture needle through a detachable connection structure, for driving the puncture needle to puncture and separate after puncture. The present invention can facilitate rapid puncture, has a short puncture path, facilitates precise operation, reduces tissue damage and shortens operation time, reduces the pain of patients during surgery, helps shorten the patient's postoperative recovery period, and reduces infection rate and pain.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, in particular to an abdominal puncture suturing device. Background Art

[0002] Laparoscopic puncture devices are mainly used to perform pneumoperitoneum and establish surgical access in the patient's abdominal cavity during minimally invasive surgery. During the puncture operation, the puncture cone is used in conjunction with the puncture cannula for puncture; after the puncture is completed, the puncture cone needs to be withdrawn from the puncture cannula. After the completion of traditional laparoscopic surgery, the surgical incision is difficult to suture. The use of ordinary suturing methods is prone to problems such as abdominal wall incision bleeding, hematoma, infection, and puncture hole hernia. The use of many instruments during the suturing process not only makes the operation cumbersome and reduces surgical efficiency, but also increases surgical risks. Therefore, there are still shortcomings and deficiencies in the existing technology. Summary of the Invention

[0003] The purpose of the present invention is to address the deficiencies of the existing technology and provide an abdominal puncture suturing device. By adopting the present invention, it is possible to facilitate rapid puncture, the puncture path is short, the tissue penetration depth is deep, and it is convenient for precise operation. By reducing tissue damage and shortening the operation time, the occurrence of puncture hole complications can be reduced, and no puncture hernia occurs after surgery, reducing the patient's pain during the operation. At the same time, it also helps the patient to recover quickly after surgery, shortens the hospitalization time, helps to shorten the patient's postoperative recovery period, and reduces the infection rate and pain.

[0004] The object of the present invention is achieved as follows: A abdominal puncture suture device comprising:

[0005] The sleeve is provided with an axial hole with an upper end opening and a side hole provided at the distal end;

[0006] a core rod slidably disposed in the axial hole;

[0007] an expansion mechanism, disposed in the axial hole and connected to the core rod at its upper end, comprising a pair of oblique arm assemblies that can be extended and retracted through the side hole, wherein the two oblique arm assemblies are configured to be retracted into the axial hole in a retracted state and to converge and extend upward in an expanded state;

[0008] The needle feeding assembly is retractably mounted on the oblique arm assembly, and the head thereof is connected to the puncture needle via a detachable connection structure, and is used to drive the puncture needle for puncture and separate after puncture;

[0009] The traction assembly includes a first traction wire and a second traction wire. The distal ends of the first traction wire and the second traction wire are connected to the needle feeding assembly. The first traction wire is used to drive the needle feeding assembly to extend, and the second traction wire is used to drive it to retract. The proximal ends of the two traction wires pass through the axial hole of the cannula.

[0010] The needle collecting piece is fixed to the core rod and is provided with a puncture fitting portion for the puncture needle to stay.

[0011] The deployment mechanism comprises:

[0012] a pair of upper arms, each having a first end hinged to the core rod and a second end hinged to the first end of the oblique arm assembly;

[0013] A pair of lower support arms have first ends hinged to the sleeves and second ends hinged to the second ends of the corresponding oblique support arm assemblies.

[0014] The first ends of the two lower arms are hinged via a first hinge shaft, a first bushing is sleeved on the first hinge shaft to separate the two lower arms, and both ends of the first hinge shaft are supported on the side walls of the sleeve;

[0015] The distal end of the second traction wire is divided into two branches, which respectively pass around the first bushing and extend to both sides, and then extend to the needle feeding assembly through the first wire passing channel of the corresponding lower support arm.

[0016] The first end of the upper support arm is hinged to the installation groove at the distal end of the core rod through a second hinge shaft, and a second bushing is provided between the first ends of the two upper support arms;

[0017] The distal end of the first traction wire is divided into two branches, which respectively pass around the second bushing and extend to the needle feeding assembly through the second wire passage corresponding to the upper support arm;

[0018] A through hole is provided at the bottom of the installation groove for the traction wire to pass through.

[0019] The oblique support arm assembly comprises:

[0020] A pair of oblique support arms, with a line gap formed between the two oblique support arms;

[0021] The axial track provided on each oblique support arm is used for sliding cooperation with the puncture rod of the needle feeding assembly.

[0022] Axial limiting holes communicating with the axial track are provided on two adjacent sides of the oblique support arm, and the rod body of the puncture rod is provided with a limiting protrusion extending outward through the axial limiting hole, and the extending end of the limiting protrusion forms a traction wire connecting portion.

[0023] The puncture needle comprises:

[0024] tapered needle;

[0025] The needle body has barbs on its periphery and threading holes on its side wall;

[0026] The first plug-in portion provided at the tail end of the needle body is used for axially detachably connecting with the second plug-in portion at the head of the puncture rod.

[0027] The upper section of the sleeve is provided with a thread passing window, and the side wall of the core rod is provided with a thread hanging post corresponding to the thread passing window, and the thread hanging post is used for hanging sutures.

[0028] The invention also includes a suture, with both ends of the suture being led out through the thread window, and both ends of the suture extending downward and connected to the corresponding puncture needle;

[0029] Or, also include:

[0030] a puncture tube, which is placed outside the sleeve;

[0031] The puncture tube and the sleeve, and the sleeve and the core rod are all circumferentially fixedly connected;

[0032] The puncture tube is provided with a puncture window for the puncture needle to pass through.

[0033] The piercing fitting portion is made of rubber, elastic plastic or fabric.

[0034] Two upper fork arms are provided at the second end of the upper support arm, an upper fork opening is provided between the two upper fork arms, the upper fork opening intersects with the second wire-passing channel, a third hinge shaft is supported in the upper fork opening, a branch of the first traction wire passing through the second wire-passing channel passes around the third hinge shaft and extends to the needle feeding assembly, and two outward-extending ends of the third hinge shaft are respectively hinged to the first ends of the two oblique support arms of the oblique support arm assembly;

[0035] The lower support arm is provided with two lower fork arms, and a lower fork opening is provided between the two lower fork arms. The lower fork opening intersects with the first wire passing channel. The fourth hinge shaft is supported in the lower fork opening. The branch of the second traction wire passing through the first wire passing channel bypasses the fourth hinge shaft and extends to the needle feeding assembly. The two outward-extending ends of the fourth hinge shaft are respectively hinged to the second ends of the two oblique support arms of the oblique support arm assembly.

[0036] The two ends of the second hinge shaft are slidably engaged with the limiting sliding grooves on the inner wall of the sleeve;

[0037] A support frame is provided at the distal end of the core rod, and the two sides of the bottom wall of the support frame support the side walls, and a mounting groove is formed between the two side walls;

[0038] The length of the upper arm is shorter than that of the lower arm;

[0039] The lower side wall of the side hole forms a limiting portion for limiting the rotation angle of the lower support arm.

[0040] The first plug-in portion is a slot, which extends axially and intersects with the threading holes.

[0041] By adopting the above scheme, the beneficial effects are as follows: the expansion mechanism can be folded into the axial hole, the sleeve can pass through the puncture hole and pass through the puncture hole, the side hole is used for the expansion mechanism to extend, and the expansion mechanism can be expanded. The two oblique arm assemblies can converge and extend upward when the expansion mechanism is expanded, so that the needle feeding assembly can be moved to the designated position. The puncture needles that can be classified and connected on the needle feeding assembly can be fixed in the early stage to move to the designated position. In the early stage of puncture, the puncture needle can be pushed outward for puncture. After puncturing the fascia layer, the puncture needle continues to extend outward until it punctures the insertion fitting part on the needle collecting piece. The puncture needle stays on the insertion fitting part and is separated from the needle feeding assembly when it is retracted. After the needle feeding assembly is reset, the expansion structure is folded into the axial hole, which is convenient for removal through the puncture hole with the sleeve, and the puncture needle is removed with the needle collecting piece, and the suture can be pulled out at the same time. The first traction wire provides a pulling force through tension, which can provide an outward puncture thrust during puncture. The second traction wire provides a pulling force through tension, which can pull the needle delivery assembly back to its original position. The pulling force provided to the needle delivery assembly through tension is stable in direction, and the pulling force directly acts on the direction of movement. The needle delivery assembly has good stability and smooth movement. The traction wire can be unfolded and folded with the unfolding mechanism, and is easily stored in the sleeve or core rod, and can be passed through the puncture hole. The present invention can facilitate rapid puncture, the puncture path is short, and it is convenient for precise operation. By reducing tissue damage and shortening the operation time, the occurrence of puncture hole complications can be reduced, and no puncture hernia occurs after the operation, reducing the patient's pain during the operation. It also helps the patient's rapid recovery after surgery, shortens the hospitalization time, helps shorten the patient's postoperative recovery period, and reduces the infection rate and pain.

[0042] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a structural schematic diagram of the present invention;

[0044] Figure 2 Schematic diagram of the unfolding state of the unfolding mechanism of the present invention;

[0045] Figure 3 It is a partial enlarged view of the unfolding mechanism;

[0046] Figure 4 This is an exploded schematic diagram of the deployment mechanism;

[0047] Figure 5 This is a schematic diagram of the puncture state of the deployment mechanism;

[0048] Figure 6 This is a schematic diagram of the unfolding mechanism in the folded state;

[0049] Figure 7 This is a schematic diagram of the arrangement structure of the hanging column;

[0050] Figure 8 Schematic diagram of the casing structure;

[0051] Figure 9 Schematic diagram of the arrangement structure of the installation slot;

[0052] Figure 10 Schematic diagram of the structure of the upper arm;

[0053] Figure 11 Schematic diagram of the structure of the lower arm;

[0054] Figure 12 It is a structural diagram of the oblique support arm;

[0055] Figure 13 Schematic diagram of the structure of the puncture needle;

[0056] Figure 14 Schematic diagram of casing arrangement.

[0057] In the accompanying drawings, 33 is the lower fork, 100 is the sleeve, 101 is the ridge, 110 is the axial hole, 120 is the side hole, 121 is the limiting portion, 130 is the line window, 140 is the limiting slide, 200 is the core rod, 210 is the installation groove, 211 is the through hole, 220 is the hanging column, 230 is the support frame, 300 is the unfolding mechanism, 310 is the oblique support arm assembly, 311 is the oblique support arm, 312 is the line gap, 313 is the axial track, 314 is the axial limiting hole, 320 is the upper support arm, 321 is the second hinge shaft, 322 is the second bushing, 323 is the first line channel, 324 is the upper fork Mouth, 325 is the third hinge axis, 330 is the lower support arm, 331 is the first hinge axis, 332 is the first bushing, 334 is the second wire passing channel, 335 is the fourth hinge axis, 400 is the needle feeding assembly, 401 is the limiting protrusion, 410 is the puncture rod, 500 is the puncture needle, 510 is the needle head, 520 is the needle body, 530 is the barb, 540 is the threading hole, 550 is the first plug-in part, 600 is the traction assembly, 610 is the first traction wire, 620 is the second traction wire, 700 is the needle collection part, 710 is the puncture matching part, 800 is the suture, 900 is the puncture tube, and 910 is the puncture window. DETAILED DESCRIPTION

[0058] Specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0059] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0060] In the description of this application, it should be understood that the orientations or positional relationships indicated by terms such as center, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, and outside are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting this application. In the description of this application, the terms first and second are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as first and second can be used to explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more. It should be noted that in actual applications, due to the limitations of equipment accuracy or installation errors, absolute parallel or perpendicular effects are difficult to achieve. The description of vertical, parallel or same direction in this application is not an absolute limiting condition, but means that a vertical or parallel structural setting can be achieved within a preset error range and the corresponding preset effect can be achieved. In this way, the technical effect of the limited features can be maximized, and the corresponding technical solution can be easy to implement and has high feasibility.

[0061] In the description of this specification, reference to the terms one embodiment, some embodiments, examples, specific examples, or some examples means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without conflicting with each other.

[0062] See also Figures 1 to 14 An embodiment of an abdominal puncture suturing device includes a cannula 100, a core rod 200, an expansion mechanism 300, a needle feeding assembly 400, a pulling assembly 600, and a needle collecting member 700. The cannula 100 has an axial hole 110 with an upper end opening and a side hole 120 disposed distally. The axial hole 110 is used to mount the core rod 200, and the side hole 120 allows the expansion mechanism 300 to extend and retract.

[0063] The core rod 200 is slidably disposed in the axial hole 110. The core rod 200 can slide in the axial direction relative to the axial hole 110, and can apply an axial thrust to the deployment mechanism 300 in the axial direction.

[0064] The deployment mechanism 300 is disposed in the axial hole 110 and connected to the core rod 200 at its upper end. It includes a pair of oblique arm assemblies 310 that can be extended and retracted through the side hole 120. The two oblique arm assemblies 310 are configured to be retracted into the axial hole 110 in a retracted state and to converge and extend upward in an deployed state. In the retracted state, they can be accommodated in the axial hole 110 and can move in the puncture hole with the cannula 100. When the desired position is reached, they can be deployed. The oblique arm 311 in the deployed state can constrain the delivery direction of the needle delivery assembly 400.

[0065] The needle delivery assembly 400 is retractably mounted on the oblique arm assembly 310. Through its retractable structure, the needle delivery assembly 400 can be extended in the desired direction. Furthermore, it can be retracted in the early stages to facilitate movement within the cannula 100. After puncture is complete, it can be retracted for easy storage. Its head is connected to the puncture needle 500 via a detachable connection structure, used to drive the puncture needle 500 for puncture and detach after puncture. When delivering the puncture needle 500, it can apply thrust to the puncture, allowing it to puncture human tissue. After the puncture is complete, it can be detached from the needle delivery assembly 400, allowing the puncture needle 500 to remain in a designated position, thereby retaining the pulled thread segment or thread end on the puncture needle 500.

[0066] The traction assembly 600 includes a first traction wire 610 and a second traction wire 620. The distal ends of the first traction wire 610 and the second traction wire 620 are connected to the needle feeding assembly 400. The first traction wire 610 is used to drive the needle feeding assembly 400 to extend outward, and the second traction wire 620 is used to drive it to retract. The proximal ends of the two traction wires pass through the axial hole 110 of the sleeve 100. The advancement and retreat of the needle feeding assembly 400 can be controlled by the traction wire. The traction wire can be routed around the deployment mechanism 300, which can be easily arranged. At the same time, the structure of the traction wire is relatively simple, and it can pass a large traction force during advancement and puncture, which can ensure the reliability of puncturing and retracting the puncture needle 500.

[0067] The needle collecting member 700 is fixed to the core rod 200 and is provided with a puncture fitting portion 710 for the puncture needle 500 to retain. The needle collecting member 700 can be used to allow the puncture needle 500 to penetrate the tissue and perform puncture. After puncturing the puncture fitting portion 710, the puncture needle 500 is stuck in the puncture fitting portion 710 and is pulled out through the puncture hole by moving the fitting. The suture 800 mounted on the puncture needle 500 is then drawn out for knotting.

[0068] Among them, the deployment mechanism 300 can have an deployed and folded state. Through the deployed state, the puncture needle 500 in the folded state can be deployed in the abdominal cavity, so that after entering the abdominal cavity, in the deployed state, the puncture hole of the puncture needle 500 deviates from the axis by a large distance, and at the same time completes the fixation of the pre-puncture position in the abdominal cavity. The puncture needle 500 on the circumference, that is, on both sides of the deployment mechanism 300, has a stable circumferential relative position.

[0069] During the puncture process, the puncture needle 500 is guided so that the puncture needle 500 penetrates the tissue at a desired angle. In some embodiments, the deployment mechanism 300 includes:

[0070] A pair of upper arms 320, each having a first end hinged to the core rod 200 and a second end hinged to the first end of the oblique arm assembly 310. After entering the puncture hole, the deployment mechanism 300 is deployed, and the two upper arms 320 are deployed. During the suturing process, the two upper arms 320 can be used for positioning, so that the entire upper arm 320 is closely attached to the wall of the abdominal cavity, that is, the inner end face of the insertion hole, and then the entire stapler is axially positioned to improve the axial accuracy during puncture. At the same time, the two upper arms 320 have a large contact area with the abdominal cavity wall, and the abdominal cavity wall can have a large supporting force on the deployment mechanism 300, reducing damage to non-suturing positions.

[0071] A pair of lower arms 330 have first ends hinged to the sleeve 100. Specifically, their first ends are connected to each other via a hinge structure. The hinge structure is connected to the sleeve 100, forming a hinged connection between the lower arms 330 and the sleeve 100. The hinge structure can be connected to the sleeve 100 by a fixed connection, abutment, etc., to constrain the position of the hinge structure. When the hinge position is constrained, the deployment mechanism 300 can be forced to expand or retract. The second ends of the two lower arms 330 are hinged to the second end of the oblique arm assembly 310. The arm length of the upper arm 320 is shorter than that of the lower arm 330. When deployed, the entire deployment mechanism 300 has a trapezoidal structure. Of course, the difference in length between the upper arm 320 and the lower arm 330 can be selected based on clinical needs, so that the waistline of the trapezoid, i.e., the angle of the oblique arm 311, can meet the desired depth and the appropriate distance between the needle hole and the puncture hole. If the distance is too small, the suturing effect is poor, while if it is too large, it will increase the pain of the patient. The oblique arm 311 can adjust the width and thickness of the suture according to the selected requirements, so that when the puncture depth is met, a smaller puncture path and a better suturing effect are achieved.

[0072] When the mechanism consisting of the two upper arms 320, the two oblique arm assemblies 310, and the two lower arms 330 is under stress at both the upper and lower ends, the two oblique arm assemblies 310 can extend outward, while the angles of the oblique arm assemblies 311 can swing. After swinging to the desired position, they can be arranged at an angle and converge upward to form an inclined guide track, which can be used to perform oblique puncture on the tissue. During oblique puncture, the axial force is concentrated during linear propulsion, the penetration efficiency is high, the damage is more limited, and the movement path is short. At the same time, due to the inclined linear puncture, the tissues on both sides of the needle rod are more uniform, avoiding asymmetric squeezing of the tissue. The puncture needle 500 and the puncture rod 410 travel along a straight path, which is more direct and smooth. Due to the linear puncture characteristics of the puncture needle 500 and the puncture rod 410, the reaction of the surrounding tissue to them is also more linear and uniform.

[0073] In some embodiments, the hinge structure includes a first hinge shaft 331, with both ends of the first hinge shaft 331 supported on the sleeve 100 to stabilize the hinge position. The first ends of the two lower arms 330 are hinged via the first hinge shaft 331. A first bushing 332 is sleeved on the first hinge shaft 331 to separate the two lower arms 330. The first ends of the first hinge shaft 331 are supported on the side walls of the sleeve 100.

[0074] The distal end of the second traction wire 620 is divided into two branches, which respectively pass around the first bushing 332 and extend to both sides, and then extend to the needle feeding assembly 400 through the first wire passage 323 of the corresponding lower support arm 330.

[0075] It can be understood that, whether in the collapsed or expanded state, the position of the first hinge axis 331 is constrained. During expansion, it is compressed, causing the lower arm 330 to swing outward, thereby pulling the second end of the oblique arm 311 to expand. During collapse, the movement of the second end of the lower arm 330 is restricted. After the lower arm 330 swings centripetally, it pulls the second end of the oblique arm 311 toward the center. The arrangement of the first bushing 332 maintains a distance between the two lower arms 330, preventing friction between them, thereby creating a scissor effect and preventing damage to the suture 800. Furthermore, the first bushing 332 also allows the second traction wire 620 to be wound around, allowing the second traction wire 620 to change its routing and force transmission direction. The second traction wire 620 has two branches, which can be subjected to force and simultaneously pull the needle feed assembly 400, achieving good movement synchronization.

[0076] In some embodiments, the first ends of the upper arms 320 are hinged to the mounting slot 210 at the distal end of the core rod 200 via a second hinge axis 321. A second bushing 322 is positioned between the first ends of the two upper arms 320. The distal end of the first traction wire 610 is split into two branches, each of which passes through the second bushing 322 and then extends through the second wire passage 334 of the corresponding upper arm 320 to the needle delivery assembly 400. A through hole 211 is provided at the bottom of the mounting slot 210 for the traction wire to pass through. The second bushing 322 maintains a distance between the two upper arms 320, preventing friction between the upper arms 320, which would create a scissor effect and prevent damage to the suture 800 or the traction wire. The second bushing 322 also allows the first traction wire 610 to be wound around, enabling the first traction wire 610 to change its routing and force transmission direction. A through hole 211 is provided at the bottom of the mounting slot 210 for the traction wire to pass through. The proximal portion of the traction wire is guided through the inner bore of the core rod 200. The first traction wire 610 has two branches, and the entire wire can bear force and pull the needle feeding assembly 400 at the same time, and its movement synchronization is good.

[0077] In some embodiments, a support frame 230 is provided at the distal end of the core rod 200, and the two sides of the bottom wall of the support frame 230 support the side walls, and a mounting groove 210 is formed between the two side walls. It can be understood that the support frame 230 can support the hinge shaft, and at the same time, the two sides of its mounting groove 210, that is, the supporting side walls can limit the upper support arm 320 in the axial direction of the hinge shaft, and at the same time, the bottom of the mounting groove 210 can limit the upper support arm 320, so that its extension angle position is stable after unfolding.

[0078] In some embodiments, the second hinge shaft 321 has two ends that slide in cooperation with the limiting grooves 140 on the inner wall of the sleeve 100 and can pass outward from the side wall of the mounting groove 210; through the limiting grooves 140, the first hinge shaft 331 can be constrained so that the hinge positions of the two upper arms 320 are continuously centered and can move relative to the first hinge shaft 331.

[0079] In some embodiments, the oblique arm assembly 310 includes a pair of oblique arms 311, with a line gap 312 formed between the two oblique arms 311; an axial track 313 provided on each oblique arm 311 is used to slide with the puncture rod 410 of the needle delivery assembly 400. Figure 10In the figure, the axial track 313 can be a linear guide hole provided on the oblique support arm 311 along its long axis, and the needle feed assembly 400 is slidably engaged within the linear guide hole. The axial track 313 can accommodate the needle feed assembly 400, can accommodate the puncture needle 500, and guide the puncture needle 500 during its travel. Alternatively, the axial track 313 can be groove-shaped to constrain and guide the puncture rod 410. The pair of oblique support arms 311 can mount the ends of two sutures 800. The entire suture device can mount at least two sutures 800, and can achieve at least double-line suturing.

[0080] Furthermore, axial limiting holes 314 are provided on adjacent sides of the oblique support arm 311, communicating with the axial track 313. The shaft of the puncture rod 410 is provided with a limiting protrusion 401 extending outward through the axial limiting hole 314. The protruding end of the limiting protrusion 401 forms a traction wire connection portion. By providing the axial limiting holes 314 and extending the limiting protrusion 401 outward, the traction wire can be pulled along the side of the puncture rod 410 to pull the puncture needle 500. Simultaneously, the axial limiting hole 314 constrains the limiting protrusion 401 to its extreme movement positions. Furthermore, two adjacent limiting protrusions 401 are integrally formed and connected to the traction wire at a single connection point. This structure simplifies the structure while ensuring the synchronization of the movement of the two puncture rods 410 and preventing unbalanced loading.

[0081] In some embodiments, two upper fork arms are provided at the second end of the upper support arm 320, and an upper fork opening 324 is provided between the two upper fork arms. The upper fork opening 324 intersects with the second wire passing channel 334, and the third hinge shaft 325 is supported in the upper fork opening 324. The branch of the first traction wire 610 passing through the second wire passing channel 334 bypasses the third hinge shaft 325 and extends to the needle feeding assembly 400. The two outward-extending ends of the third hinge shaft 325 are respectively hinged to the first ends of the two oblique support arms 311 of the oblique support arm assembly 310. With this structure, it can provide a passage for the first traction wire 610, and at the same time, the first traction wire 610 can be constrained by the upper fork opening 324. The hinge shaft part in the upper fork opening 324 can also provide the winding requirements of the first traction wire 610, and at the same time, a gap can be formed between the two oblique support arms 311.

[0082] The lower support arm 330 is provided with two lower fork arms, and a lower fork opening 33 is provided between the two lower fork arms. The lower fork opening 33 intersects with the first wire-passing channel 323. The lower fork opening 33 supports a fourth hinge shaft 335. The branch of the second traction wire 620 passing through the first wire-passing channel 323 bypasses the fourth hinge shaft 335 and extends to the needle feeding assembly 400. The two outward-extending ends of the fourth hinge shaft 335 are respectively hinged to the second ends of the two oblique support arms 311 of the oblique support arm assembly 310. With this structure, a passage for the second traction wire 620 can be provided. At the same time, the second traction wire 620 can be constrained by the lower fork opening 33. The hinge shaft portion in the lower fork opening 33 can also meet the winding requirements of the second traction wire 620. At the same time, a gap for the traction wire to pass through can be formed between the two oblique support arms 311. The wire passage can be formed by structures such as cutting grooves, cutting planes, notches or holes, and can also be composed of multiple sections of cutting grooves, cutting planes, notches or holes or formed in combination to allow the traction wire to pass through.

[0083] The detachable connection structure can initially fix the puncture needle 500 before puncture. During puncture, a thrust is applied to the puncture needle 500, and the axes of the puncture needle 500 and the puncture rod 410 are aligned and can transmit axial thrust. When the puncture rod 410 retreats, it can be separated from the puncture needle 500, so that it is retained on the needle collecting member 700. In some embodiments, the detachable connection structure can be formed by magnetic attraction, or it can be connected in the form of an adhesive elastic buckle or an elastic clamp. Of course, the puncture needle 500 and the puncture rod 410 can also be connected by a fracture connection structure, which will disconnect when under tension.

[0084] Specifically in some embodiments, the puncture needle 500 includes a tapered needle head 510, a needle body 520, and a first plug-in portion 550 provided at the tail end of the needle body 520. The needle body 520 is provided with barbs 530 and threading holes 540 around it, and a threading hole 540 is opened on the side wall. The threading hole 540 is used to fix the end of the suture 800. The end of the suture 800 can pass through the hole and be fixed relative to the threading hole 540 through a knot; the plug-in portion provided at the tail end of the needle body 520 is used for axially detachable connection with the second plug-in portion at the head of the puncture rod 410 of the needle feeding assembly 400. The barbs 530 can prevent the puncture needle 500 from falling off after being inserted into the puncture matching portion 710, thereby increasing the pulling-off force and separating the puncture needle 500 from the puncture rod 410. The tail end of the needle body 520 is provided with a tenon, slot or plug-in hole that is compatible with the head of the puncture rod 410; such as Figure 4 As shown, the second plug-in portion of the front section of the puncture rod 410 is a tenon in the shape of a rod, and the first plug-in portion 550 adapted thereto is a socket or slot. Figure 4In the embodiment, the first plug-in portion 550 is a slot that extends axially and intersects the threading hole 540. This arrangement facilitates the processing of threading holes 540 with smaller diameters. The threading portion of the threading hole 540 is shallow, and the lateral opening of the slot allows for observation of the plug-in status of the second plug-in portion and facilitates the rapid threading and securing of the end of the suture 800. The axially detachable connection allows for initial needle holding and securing of the puncture needle 500 in the early stages, while also providing sufficient axial thrust during puncture. During separation, the first plug-in portion 550 and the second plug-in portion disengage, achieving separation.

[0085] In some embodiments, a wire window 130 is provided on the upper section of the sleeve 100, and a wire hanging column 220 is provided on the side wall of the core rod 200. The wire hanging column 220 is used to mount the suture 800. Both ends of the suture 800 are led out through the wire window 130. Both ends of the suture 800 extend downward and are connected to the corresponding puncture needles 500. For example, among the four matrix-distributed puncture needles 500, the two puncture needles 500 located on the long side of the rectangle are respectively connected to the two ends of the same suture 800. In the early stage of puncture, the suture 800 can be hung on the hanging post 220 through the thread window 130. As the relative positions of the cannula 100 and the core rod 200 are adjusted, the hanging post 220 moves with the cannula 100, and the suture 800 slips off the hanging post 220. Due to the adjustment of the relative positions of the cannula 100 and the core rod 200, the expansion and puncture of the expansion structure can be adapted, and the movement rhythm is coordinated. The suture 800 can be stored in the early stage of puncture, and the suture 800 is arranged more stretched, not easy to knot, and avoids the suture 800 from being stuck. The suture 800 can be released in the later stage so that it can complete the puncture.

[0086] In some embodiments, the suture 800 can also be pre-installed. When the puncture device is pre-installed, the suture 800 is also included. The two ends of the suture 800 are led out through the thread window 130. The two ends of the suture 800 extend downward and are connected to the corresponding puncture needle 500. The hanging post 220 can be set in the hole on the inner wall of the core rod 200 and extend upward in the hole. The hole can be a square hole or a round hole.

[0087] In some embodiments, the insertion fitting portion 710 is made of rubber, elastic plastic or fabric. After the puncture needle 500 punctures, it can have a large friction between itself and the puncture needle 500, so that the puncture needle 500 can be retained. Of course, the barbs 530 provided on the puncture needle 500 can better hook and have a higher anti-retreat characteristic.

[0088] In some embodiments, a puncture tube 900 is further included, which is placed outside the sleeve 100; the puncture tube 900 and the sleeve 100, and the sleeve 100 and the core rod 200 are all circumferentially fixedly connected, specifically by using protrusions and corresponding limiting grooves, wherein the protrusions can be pins or ridges 101, etc. Figure 1 As shown in the figure, the protrusion provided on the inner wall of the sleeve 100 is a ridge 101, which can be integrally formed on the tube wall; a puncture window 910 is provided on the puncture tube 900 for the puncture needle 500 to pass through. The puncture tube 900 is used for abdominal wall puncture. At the same time, when suturing, its inner hole is used to form a channel for the suturing device to enter and exit.

[0089] In some embodiments, a limiting portion 121 is formed on the lower side wall of the side hole 120 to limit the rotation of the lower support arm. Through this structure, the lower support arm 330 can be limited in rotation so that its position is stable after unfolding.

[0090] The above scheme is adopted, wherein the deployment mechanism 300 can be retracted into the axial hole 110, the sleeve 100 can pass through and out of the puncture hole, and the side hole 120 is used for the deployment mechanism 300 to extend. When the deployment mechanism 300 is deployed, the two oblique arm assemblies 310 can converge and extend upward to move the needle delivery assembly 400 to the specified position. The puncture needle 500 that can be connected in a classified manner on the needle delivery assembly 400 can be fixed in the early stage to move it to the specified position. In the early stage of puncture, it can be pushed The movable puncture needle 500 extends outward to perform puncture. After puncturing the fascia layer, the puncture needle 500 continues to extend outward until it punctures the insertion fitting portion 710 on the needle collecting member 700. The puncture needle 500 is retained on the insertion fitting portion 710 and is separated from the needle feeding assembly 400 when it is retracted. After the needle feeding assembly 400 is reset, the deployment structure is retracted into the axial hole 110, making it easy to be removed through the puncture hole with the cannula 100. The puncture needle 500 is removed with the needle collecting member 700, and the suture 800 can be pulled out at the same time. The first traction wire 610 can provide an outward puncture thrust during puncture, and the second traction wire 620 can provide a pulling force when the needle feeding assembly 400 is retracted and reset. The traction wire can be unfolded and folded with the deployment mechanism 300, and is easily stored in the cannula 100 or the core rod 200, and can be passed through the puncture hole. The present invention can facilitate rapid puncture, has a short puncture path, and is convenient for precise operation. By reducing tissue damage and shortening operation time, the occurrence of puncture hole complications can be reduced, and no puncture hernia occurs after surgery, which reduces the patient's pain during the operation. At the same time, it also helps the patient to recover quickly after surgery, shortens the hospitalization time, helps to shorten the patient's postoperative recovery period, and reduces the infection rate and pain.

[0091] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. It is apparent that various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the present invention. Thus, the present invention is intended to encompass such modifications and variations as long as they fall within the scope of the claims and their equivalents.

Claims

1. A abdominal puncture suture device, characterized in that: include: A sleeve (100) is provided with an axial hole (110) with an upper end opening and a side hole (120) provided at a distal end; A core rod (200) slidably disposed in the axial hole (110); an expansion mechanism (300), disposed in the axial hole (110) and having its upper end connected to the core rod (200), comprising a pair of oblique arm assemblies (310) that can be extended and retracted through the side hole (120), wherein the two oblique arm assemblies (310) are configured to be retracted in the axial hole (110) in a retracted state and to converge and extend upward in an expanded state; The needle delivery assembly (400) is retractably mounted on the oblique arm assembly (310), and the head thereof is connected to the puncture needle (500) via a detachable connection structure, and is used to drive the puncture needle (500) to puncture and to separate after puncture; A traction assembly (600) includes a first traction wire (610) and a second traction wire (620), wherein the distal ends of the first traction wire (610) and the second traction wire (620) are connected to the needle feeding assembly (400), the first traction wire (610) is used to drive the needle feeding assembly (400) to extend outward, and the second traction wire (620) is used to drive it to retract, and the proximal ends of the two traction wires are passed through the axial hole (110) of the sleeve (100); A needle collecting member (700) is fixed to the core rod (200) and is provided with a puncture fitting portion (710) for the puncture needle (500) to be retained; Wherein, the unfolding mechanism (300) comprises: A pair of upper support arms (320), each having a first end hinged to the core rod (200) and a second end hinged to the first end of the corresponding oblique support arm assembly (310); A pair of lower support arms (330) have first ends hinged to the sleeve (100) and second ends hinged to the second ends of the corresponding oblique support arm assemblies (310); the arm length of the upper support arm (320) is shorter than the arm length of the lower support arm (330).

2. The abdominal puncture stapler according to claim 1, characterized in that: The first ends of the two lower support arms (330) are hinged via a first hinge shaft (331); a first bushing (332) is sleeved on the first hinge shaft (331) to separate the two lower support arms (330); and both ends of the first hinge shaft (331) are supported on the side walls of the sleeve (100); The distal end of the second traction wire (620) is divided into two branches, which respectively extend to both sides after passing around the first bushing (332), and extend to the needle delivery assembly (400) through the first wire passage (323) of the corresponding lower support arm (330).

3. The abdominal puncture stapler according to claim 1 or 2, characterized in that: The first end of the upper support arm (320) is hinged to the installation groove (210) at the distal end of the core rod (200) via a second hinge shaft (321), and a second bushing (322) is provided between the first ends of the two upper support arms (320); The distal end of the first traction wire (610) is divided into two branches, which respectively pass around the second bushing (322) and extend to the needle delivery assembly (400) through the second wire passage (334) corresponding to the upper support arm (320); The bottom of the installation groove (210) is provided with a through hole (211) for the traction wire to pass through.

4. The abdominal puncture stapler according to claim 1, characterized in that: The oblique support arm assembly (310) comprises: A pair of oblique support arms (311), with a line gap (312) formed between the two oblique support arms (311); The axial track (313) provided on each oblique support arm (311) is used for slidingly cooperating with the puncture rod (410) of the needle delivery assembly (400).

5. The abdominal puncture stapler according to claim 4, characterized in that: Axial limiting holes (314) communicating with the axial track (313) are provided on two adjacent sides of the oblique support arm (311), and a limiting protrusion (401) extending outward through the axial limiting hole (314) is provided on the rod body of the puncture rod (410), wherein the extending end of the limiting protrusion (401) forms a traction wire connecting portion.

6. The abdominal puncture stapler according to claim 1, characterized in that: The puncture needle (500) comprises: a tapered needle (510); The needle body (520) has barbs (530) on its outer periphery and a threading hole (540) on its side wall; The first plug-in portion (550) provided at the tail end of the needle body (520) is used for axially detachably connecting to the second plug-in portion at the head of the puncture rod (410).

7. The abdominal puncture stapler according to claim 1, characterized in that: The upper section of the sleeve (100) is provided with a thread passing window (130), and the side wall of the core rod (200) is provided with a thread hanging post (220) corresponding to the thread passing window (130), and the thread hanging post (220) is used to hang the suture (800).

8. The abdominal puncture stapler according to claim 7, characterized in that: It also includes a suture (800), with both ends of the suture (800) leading out through the thread window (130), and both ends of the suture (800) extending downward and connected to the corresponding puncture needle (500); Or, also include: A puncture tube (900) is placed outside the sleeve (100); The puncture tube (900) and the sleeve (100), as well as the sleeve (100) and the core rod (200), are all circumferentially fixedly connected; The puncture tube (900) is provided with a puncture window (910) for the puncture needle (500) to pass through.

9. The abdominal puncture stapler according to claim 4, characterized in that: Two upper fork arms are provided at the second end of the upper support arm (320), and an upper fork opening (324) is provided between the two upper fork arms. The upper fork opening (324) intersects with the second wire-passing channel (334). The upper fork opening (324) supports a third hinge shaft (325). A branch of the first traction wire (610) passing through the second wire-passing channel (334) bypasses the third hinge shaft (325) and extends to the needle feeding assembly (400). The two outwardly extending ends of the third hinge shaft (325) are respectively hinged to the first ends of the two oblique support arms (311) of the oblique support arm assembly (310); The lower support arm (330) is provided with two lower fork arms, and a lower fork opening (33) is provided between the two lower fork arms. The lower fork opening (33) intersects with the first wire-passing channel (323). The lower fork opening (33) supports a fourth hinge shaft (335). A branch of the second traction wire (620) passing through the first wire-passing channel (323) bypasses the fourth hinge shaft (335) and extends to the needle feeding assembly (400). The two outwardly extending ends of the fourth hinge shaft (335) are respectively hinged to the second ends of the two oblique support arms (311) of the oblique support arm assembly (310).

10. The abdominal puncture stapler according to claim 3, characterized in that: Both ends of the second hinge shaft (321) are in sliding engagement with the limiting sliding grooves (140) on the inner wall of the sleeve (100); A support frame (230) is provided at the distal end of the core rod (200), and the two sides of the bottom wall of the support frame (230) support the side walls, and a mounting groove (210) is formed between the two side walls; A limiting portion (121) is formed on the lower side wall of the side hole (120) for limiting the rotation angle of the lower support arm (330).

11. The abdominal puncture stapler according to claim 6, characterized in that: The first plug-in portion (550) is a slot, which extends axially and intersects with the threading hole (540); Alternatively, the penetration fitting portion (710) is made of rubber, elastic plastic or fabric.

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