Staple replacement apparatus, tissue suturing system, and staple replacement method therefor

Abstract

Provided in the present application are a staple replacement apparatus, a tissue suturing system, and a staple replacement method therefor. The staple replacement apparatus comprises: an elastic member and two clamping members. The two clamping members are rotatably connected, and the clamping members are located on two sides of a rotation axis and are respectively a clamping end and a holding end. The clamping end is provided with an accommodating groove, a limiting groove, and a threading groove. The limiting groove is located at an end portion of the clamping end and is in communication with the accommodating groove. The elastic member is arranged between the two clamping members. Under the action of the elastic member, the clamping ends of the two clamping members are attached to each other. The accommodating grooves of the two clamping ends are in communication with each other to form an accommodating cavity, the limiting grooves of the two clamping ends are in communication with each other to form a limiting cavity, and the threading grooves of the two clamping ends are in communication with each other to form a threading cavity. When a spring section of a surgical staple assembly is placed in the accommodating cavity, a suture fixing portion of the surgical staple assembly is limited in the limiting cavity, and the threading cavity is in communication with a suture fixing hole of the suture fixing portion. Under the action of an external force applied to the holding end, the clamping ends of the two clamping members are separated to release the surgical staple assembly.

Description

A needle changing device, tissue suturing system and needle changing method thereof TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a needle changing device, a tissue suturing system and a needle changing method thereof. BACKGROUND

[0002] The suturing needle device is used for implanting a suturing needle assembly into human tissue. During the entire operation, a plurality of suturing needle assemblies need to be implanted into human tissue. In the prior art, a tissue suturing system needs to be matched with a plurality of suturing needle assemblies that have been threaded on a suture in advance. The number of the suturing needle assemblies is fixed and cannot be increased or decreased. After the current suturing needle assembly is implanted into the tissue, a new suturing needle assembly needs to be replaced on the suturing needle device. The surgeon usually needs to change the needle manually. The size of the suturing needle assembly is extremely small, with an outer diameter of about 1.8 mm in diameter. It is extremely difficult to change the needle manually, which increases the burden of the surgeon and is not conducive to improving the operation efficiency.

[0003] DISCLOSURE

[0004] To solve one of the above technical defects, the present application provides a needle changing device, a tissue suturing system and a needle changing method thereof.

[0005] According to a first aspect of the present application, a needle changing device is provided, comprising:

[0006] Two clamping pieces, the two clamping pieces are rotatably connected, the clamping pieces located on both sides of the rotation axis are clamping ends and pinching ends respectively, the clamping end has a containing groove, a limiting groove and a threading groove, the limiting groove is located at the end of the clamping end and is communicated with the containing groove;

[0007] A resilient member is arranged between the two clamping pieces. Under the action of the resilient member, the clamping ends of the two clamping pieces are in close contact, the containing grooves of the two clamping ends are communicated to form a containing cavity, the limiting grooves of the two clamping ends are communicated to form a limiting cavity, and the threading grooves of the two clamping ends are communicated to form a threading cavity;

[0008] In a state where the spring section of the suturing needle assembly is placed in the containing cavity, the suture fixing part of the suturing needle assembly is limited in the limiting cavity, and the threading cavity is communicated with the suture fixing hole of the suture fixing part.

[0009] Under the action of an external force applied to the pinching end, the clamping ends of the two clamping pieces are separated to release the suturing needle assembly.

[0010] Optionally, the limiting cavity includes two first limiting surfaces and one second limiting surface.

[0011] Both of the first limiting surfaces extend along the length direction of the accommodating groove, and a gap is formed between the two first limiting surfaces, the second limiting surface is located on the side of the first limiting surface close to the pinching end, and the second limiting surface is connected perpendicularly to the two first limiting surfaces;

[0012] In a state where the suture fixing part is limited in the limiting cavity, the two first limiting surfaces are limited on both sides of the suture fixing part along the circumferential direction of the nail changing device, so as to limit the rotation of the suture fixing part, and the second limiting surface is limited on the side of the suture fixing part close to the pinching end, so as to limit the movement of the suture fixing part to the side of the pinching end.

[0013] Optionally, the threading cavity comprises a first opening on the outer surface of the two clamping members and a second opening on the second limiting surface of the limiting cavity.

[0014] In a state where the suture fixing part of the suture nail assembly is limited in the limiting cavity, the second opening is communicated with the suture fixing hole of the suture fixing part.

[0015] Optionally, in the direction from the first opening to the second opening, the cross-sectional area of the threading cavity gradually decreases.

[0016] Optionally, the nail changing device comprises a rotating shaft.

[0017] The clamping member has a hinged seat.

[0018] The rotating shaft is respectively arranged in the hinged seat of the two clamping members.

[0019] The elastic member is a torsion spring, the helical segment of the torsion spring is sleeved on the rotating shaft, and the two torsion arms of the torsion spring are respectively abutted against the two clamping members.

[0020] According to a second aspect of the embodiment of the present application, a tissue suturing system is provided, comprising:

[0021] A suture nail device has an elastic tube and a releaser slidably arranged at the end of the elastic tube.

[0022] The above-mentioned nail changing device is used for clamping the spring segment of the suture nail assembly, so that the connecting barrel of the suture nail assembly is exposed to be sleeved on the releaser.

[0023] According to a third aspect of the embodiment of the present application, a nail changing method of the above-mentioned tissue suturing system is provided, comprising:

[0024] Step S1, operating the suture nail device so that the releaser extends out of the elastic tube.

[0025] Step S2, pinch the needle changing device containing the suture needle assembly, adjust the position of the needle changing device, so that the connecting barrel of the suture needle assembly is sleeved on the releaser;

[0026] Step S3, pass the suture along the threading cavity on the needle changing device, so that the suture thread penetrates the suture needle assembly suture thread fixing hole;

[0027] Step S4, pinch the pinch end of the clamping member, so that the pinch ends of the two clamping members are separated to release the suture needle assembly.

[0028] Optionally, the releaser has an outer protruding rib, and the inner wall of the connecting barrel is provided with an inner protruding rib;

[0029] In step S2, under the action of external force, the connecting barrel moves along the releaser, so that the inner protruding rib of the connecting barrel is clamped on the outer protruding rib of the releaser close to one side of the elastic tube.

[0030] Optionally, in step S2, the pinch ends of the two clamping members of the needle changing device are pinched, so that the clamping members hold the suture needle assembly.

[0031] Optionally, the suture needle device comprises a handle, a pull cable and a sliding ring, one end of the elastic tube is connected to the handle, the pull cable is slidably arranged in the elastic tube, one end of the pull cable is connected to the releaser, and the sliding ring is slidably arranged on the handle, and the sliding ring and the other end of the pull cable are in transmission connection.

[0032] In step S1, the sliding ring is pushed to one side of the elastic tube, so that the releaser extends out of the elastic tube.

[0033] Optionally, in step S1, when the sliding ring is adjusted to make the releaser extend out of the elastic tube, the sliding ring is locked on the handle by the locking mechanism.

[0034] By adopting the above technical scheme, the present application has the following beneficial effects:

[0035] The present application provides a needle changing device for convenient use, which can clamp a suture needle assembly with small size, and the size of the needle changing device is larger than that of the suture needle, so as to facilitate the clinician to pinch and operate. Compared with manual needle changing, the needle changing device of the present application can significantly improve the operation efficiency and reduce the workload and operation difficulty of the clinician. The needle changing device of the present application can conveniently pass the suture thread, and the suture needle of the tissue suture system is not limited in number, and has higher flexibility. BRIEF DESCRIPTION OF DRAWINGS

[0036] The drawings described herein are used to provide further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0037] Fig. 1 shows a structural schematic diagram of a staple changing device according to an embodiment of the present application;

[0038] Fig. 2 shows an enlarged view of part B in Fig. 1;

[0039] Fig. 3 shows a structural schematic diagram of a clamping member of the staple changing device according to an embodiment of the present application;

[0040] Fig. 4 shows a state diagram of the staple changing device clamping a staple assembly according to an embodiment of the present application;

[0041] Fig. 5 shows an internal state diagram of the staple changing device clamping a staple assembly according to an embodiment of the present application;

[0042] Fig. 6 shows a state diagram of the staple changing device clamping a staple assembly and preparing to install the assembly into a releaser according to an embodiment of the present application;

[0043] Fig. 7 shows a state diagram of the staple changing device installing a staple assembly into a releaser according to an embodiment of the present application;

[0044] Fig. 8 shows a schematic diagram of threading a suture through a staple assembly by means of the staple changing device according to an embodiment of the present application;

[0045] Fig. 9 shows an internal state diagram of Fig. 8;

[0046] Fig. 10 shows a state diagram of pinching the pinching ends of the clamping members so that the pinching ends of the two clamping members are separated to release the staple assembly;

[0047] Fig. 11 shows a cooperation structural diagram of a first staple assembly and a releaser in a tissue stapling system according to an embodiment of the present application;

[0048] Fig. 12 is a sectional view of Fig. 11;

[0049] Fig. 13 shows a structural schematic diagram of a first staple assembly in a tissue stapling system according to an embodiment of the present application;

[0050] Fig. 14 shows a structural schematic diagram of a releaser cooperating with the staple assembly in Fig. 13;

[0051] Fig. 15 shows a cooperation structural diagram of a second staple assembly and a releaser in a tissue stapling system according to an embodiment of the present application;

[0052] Fig. 16 shows a structural schematic diagram of a releaser cooperating with the staple assembly in Fig. 15;

[0053] Fig. 17 shows a structural schematic diagram of a second staple assembly in a tissue stapling system according to an embodiment of the present application;

[0054] Fig. 18 shows a structural schematic diagram of a first staple device in a tissue stapling system according to an embodiment of the present application;

[0055] Fig. 19 is a sectional view of Fig. 18;

[0056] Fig. 20 is another perspective view of Fig. 18;

[0057] Fig. 21 shows a structural schematic view of the slip ring in Fig. 20;

[0058] Fig. 22 shows a partial structural view of a locking assembly of a first kind of suture needle device in a tissue suturing system provided by the embodiments of the present application;

[0059] Fig. 23 shows a sectional view of a slip ring of a second kind of suture needle device in a tissue suturing system provided by the embodiments of the present application in an unlocked state;

[0060] Fig. 24 shows a sectional view of the slip ring of the second kind of suture needle device in the tissue suturing system provided by the embodiments of the present application in a locked state;

[0061] Fig. 25 shows an enlarged view of part A in Fig. 24;

[0062] Fig. 26 shows a structural schematic view of a handle of the second kind of suture needle device in the tissue suturing system provided by the embodiments of the present application;

[0063] Fig. 27 shows a partial structural sectional view of the second kind of suture needle device in the tissue suturing system provided by the embodiments of the present application;

[0064] Fig. 28 shows a schematic view of a slip ring of a third kind of suture needle device in a tissue suturing system provided by the embodiments of the present application in an unlocked state;

[0065] Fig. 29 shows a schematic view of the slip ring of the third kind of suture needle device in the tissue suturing system provided by the embodiments of the present application in a locked state;

[0066] Fig. 30 shows a perspective structural view of the third kind of suture needle device in the tissue suturing system provided by the embodiments of the present application;

[0067] Fig. 31 shows a structural schematic view of an inner sliding block of the third kind of suture needle device in the tissue suturing system provided by the embodiments of the present application;

[0068] Fig. 32 shows a structural schematic view of a fourth kind of suture needle device in the tissue suturing system provided by the embodiments of the present application;

[0069] Fig. 33 shows a sectional view of a partial structure in Fig. 32;

[0070] Fig. 34 shows a structural schematic view of a handle cap of the fourth kind of suture needle device in the tissue suturing system provided by the embodiments of the present application;

[0071] Fig. 35 shows a structural schematic view of an indicating block of the fourth kind of suture needle device in the tissue suturing system provided by the embodiments of the present application;

[0072] Fig. 36 shows a structure diagram of a rotating linkage of a fourth kind of suture needle device in the tissue suturing system according to an embodiment of the present application;

[0073] Fig. 37 shows a diagram of a thread cutting device in the tissue suturing system according to an embodiment of the present application;

[0074] Fig. 38 shows a diagram of threading a suture thread on the thread cutting assembly according to an embodiment of the present application;

[0075] Fig. 39 shows a cross-sectional view of the thread cutting assembly of the tissue suturing system according to an embodiment of the present application in a pre-cutting state;

[0076] Fig. 40 shows a diagram of the thread cutting assembly of the tissue suturing system according to an embodiment of the present application in a state of clamping a suture thread by a thread fixing mechanism;

[0077] Fig. 41 shows a diagram of the thread cutting assembly of the tissue suturing system according to an embodiment of the present application in a state of driving a wire to be separated from the thread fixing mechanism;

[0078] Fig. 42 shows a diagram of the thread cutting assembly of the tissue suturing system according to an embodiment of the present application in a post-cutting state;

[0079] Fig. 43 shows a structure diagram of a limiting member of the thread cutting assembly of the tissue suturing system according to an embodiment of the present application. DETAILED DESCRIPTION

[0080] In order to make the technical solutions and advantages in the embodiments of the present application clearer, the exemplary embodiments of the present application are further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0081] In the description of the present application and the embodiments thereof, it should be understood that the terms “top”, “bottom”, “height” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0082] In the present application and embodiments thereof, unless specifically defined and limited otherwise, the terms "set", "mount", "connect", "connect", "fix", and other terms should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection, and can also be communication; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0083] In the present application and embodiments thereof, unless specifically defined and limited otherwise, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0084] Embodiment one

[0085] Referring to FIGS. 1-10, the embodiment of the present application provides a staple changing device 200, comprising: a resilient member 230 and two clamping members 210. The two clamping members 210 are rotatably connected, and the clamping members 210 located on both sides of the rotation axis are clamping ends and pinch ends respectively, the clamping end has a receiving groove 211a, a limiting groove 212a and a threading groove 213a, the limiting groove 212a is located at the end of the clamping end and communicates with the receiving groove 211a, the resilient member 230 is arranged between the two clamping members 210, under the action of the resilient member 230, the clamping ends of the two clamping members 210 are in close contact, the receiving grooves 211a of the two clamping ends are in communication to form a receiving cavity 211, the limiting grooves 212a of the two clamping ends are in communication to form a limiting cavity 212, and the threading grooves 213a of the two clamping ends are in communication to form a threading cavity 213. In the state that the spring section 310 of the suture needle assembly 300 is placed in the receiving cavity 211, the suture fixing part 330 of the suture needle assembly 300 is limited in the limiting cavity 212, and the threading cavity 213 communicates with the suture fixing hole 331 of the suture fixing part 330. Under the action of external force applied to the pinch end, the clamping ends of the two clamping members 210 are separated to release the suture needle assembly 300.

[0086] The application provides a convenient-to-use needle changing device 200 which can clamp a suture needle assembly 300 with a small size, the needle changing device 200 has a size larger than the suture needle assembly, and is convenient for a surgeon to pinch and operate, compared with manual needle changing, the needle changing device 200 can obviously improve the operation efficiency and reduce the workload and operation difficulty of the surgeon. The needle changing device 200 can conveniently pass a suture thread, and the suture needle of the tissue suturing system is not limited in number, and has higher flexibility.

[0087] In some possible embodiments, referring to FIGS. 2 and 4, the limiting cavity 212 includes two first limiting surfaces 2121 and one second limiting surface 2122, the two first limiting surfaces 2121 extend along the length direction of the accommodating groove, and the two first limiting surfaces 2121 have a gap therebetween, the second limiting surface 2122 is located on one side of the first limiting surface 2121 close to the pinching end, and the second limiting surface 2122 is connected to the two first limiting surfaces 2121 perpendicularly. In the state that the suture fixing part 330 is limited in the limiting cavity 212, the two first limiting surfaces 2121 are limited on both sides of the suture fixing part 330 in the circumferential direction of the needle changing device 200, so as to limit the rotation of the suture fixing part 330, and the second limiting surface 2122 is limited on one side of the suture fixing part 330 close to the pinching end, so as to limit the movement of the suture fixing part 330 to the side of the pinching end.

[0088] In some possible embodiments, referring to FIGS. 2 and 3, the threading cavity 213 includes a first opening 2131 located on the outer surface of the clamping piece 210 and a second opening 2132 located on the second limiting surface 2122 of the limiting cavity 212, and in the state that the suture fixing part 330 of the suture needle assembly 300 is limited in the limiting cavity 212, the second opening 2132 communicates with the suture fixing hole 331 of the suture fixing part 330. The suture thread 500 can slide along the threading cavity 213 and pass through the suture fixing hole 331 of the suture needle assembly 300, and the operation is more convenient.

[0089] In the direction from the first opening 2131 to the second opening 2132, the cross-sectional area of the threading cavity 213 gradually decreases. The first opening 2131 has the largest area, so that the end of the suture thread 500 can be smoothly inserted into the threading cavity 213, and the second opening 2132 has the smallest area and can smoothly communicate with the suture fixing hole 331, so that the end of the suture thread 500 can be smoothly inserted into the suture fixing hole 331.

[0090] In some possible embodiments, referring to FIG. 3, the staple changing device 200 comprises a rotating shaft 220, the clamping members 210 have hinged seats 214, the rotating shaft 220 penetrates the hinged seats 214 of the two clamping members 210 respectively, and the elastic member 230 is a torsion spring, the helical section of the torsion spring is sleeved on the rotating shaft 220, and the two torsion arms of the torsion spring abut against the two clamping members 210 respectively. The torsion spring can abut against the pinch ends of the two clamping members 210, so that the two pinch ends are separated, and the pinch ends of the clamping members 210 are always closed to clamp the suture staple assembly 300.

[0091] Embodiment Two

[0092] Referring to FIGS. 1-43, the embodiment of the present application provides a tissue suturing system, which comprises a suture staple device 100 and a staple changing device 200. The suture staple device 100 has an elastic tube 2 and a releaser 8 slidably arranged at the end of the elastic tube 2, and the releaser 8 is connected to the end of a pull cable 4 of the suture staple device. The staple changing device 200 is used to clamp the spring section 310 of the suture staple assembly 300, so that the connecting barrel 320 of the suture staple assembly 300 is exposed to be sleeved on the releaser 8. Referring to FIGS. 11-14, the inner wall of the connecting barrel 320 is provided with an inner protruding rib 321, and the outer wall of the releaser 8 is provided with an outer protruding rib 81. When the connecting barrel 320 is sleeved on the releaser 8, the inner protruding rib 321 and the outer protruding rib 81 are in clamping cooperation, and the connecting barrel 320 cannot be easily separated from the releaser 8.

[0093] Referring to FIGS. 15-17, the end of the releaser 8 can be slotted to form two elastic portions 82, and the two elastic portions 82 are both provided with the outer protruding rib 81. By arranging the two elastic portions 82, the releaser 8 can be clamped on the connecting barrel 320 and elastically abut against the inner wall of the connecting barrel 320 and the inner protruding rib 321 on the inner wall of the connecting barrel 320 to be effectively clamped.

[0094] The releaser 8 can be provided with a synchronous rib 83, and the connecting barrel 320 can be provided with a synchronous groove 340. The synchronous rib 83 can be inserted into the synchronous groove 340 to enable the releaser 8 and the suture staple assembly to rotate synchronously.

[0095] Embodiment Three

[0096] Referring to Figs. 18 and 19, the tissue suturing system according to the third embodiment of the present application is described in detail, which comprises a suturing needle assembly 300, and the suturing needle device 100 comprises a handle 1, a handle cap 7, an elastic tube 2, a pull cable 4 and a sliding ring 5. The handle cap 7 is rotatably arranged on the handle 1, the handle 1 limits the movement of the handle cap 7 along the length direction of the handle 1, the elastic tube 2 is connected to the handle cap 7 at one end, the suturing needle assembly 300 is located at the end of the elastic tube 2 away from the handle 1, the pull cable 4 is slidably arranged in the elastic tube 2, one end of the pull cable 4 is detachably connected to the suturing needle assembly 300, and the sliding ring 5 is slidably arranged on the handle 1. The other end of the pull cable 4 is connected to the sliding ring 5, and the movement of the sliding ring 5 along the handle 1 can drive the suturing needle assembly 300 to move along the extension direction of the elastic tube 2 through the pull cable 4. The handle 1 is rotated around the handle cap 7, and the handle 1 can drive the suturing needle assembly 300 to rotate synchronously through the pull cable 4.

[0097] When the suturing needle assembly 300 needs to be operated to be implanted into the tissue, the handle 1 is rotated, the handle 1 and the sliding ring 5 are rotated, the pull cable 4 is synchronously rotated, and the suturing needle assembly 300 can be rotated to be implanted into the human tissue. When the pull cable 4 needs to be controlled to be extended or retracted, the sliding ring 5 can be slid, and the release device 8 at the end of the pull cable 4 for being connected to the suturing needle assembly can be moved through the pull cable 4.

[0098] The suturing needle device provided by the third embodiment of the present application has simple structure and is easy to operate. The operation of controlling the rotation of the suturing needle assembly 300 and the operation of controlling the extension and retraction of the suturing needle assembly 300 are independent, the operator can control them respectively, the operation precision is improved, and the operation quality is improved.

[0099] In some possible embodiments, referring to Figs. 34 and 33, the inner wall of the handle cap 7 is provided with a guide rib 70, the guide rib 70 extends along the circumference of the handle cap 7, one end of the handle 1 is provided with an annular groove 122, the annular groove 122 extends along the circumference of the handle 1, and the guide rib 70 is embedded in the annular groove 122 in the state that the handle cap 7 is sleeved on the handle 1. The guide rib is not a closed annular, the inner wall of the handle cap 7 can be provided with a plurality of guide ribs 70, each guide rib 70 is sequentially arranged along the circumference of the handle cap 7, and there is a disconnected area between adjacent guide ribs 70, thereby facilitating the insertion of the end of the handle 1 into the annular groove 122. The handle cap 7 is a plastic structure and has a certain deformation ability, each guide rib 70 is not a closed annular, and under the action of sufficient external force, the end of the handle 1 can be inserted into the handle cap 7 by slight deformation, so that the guide rib 70 is clamped into the annular groove 122.

[0100] In some possible embodiments, referring to Figs. 30 and 33, the handle 1 comprises two spaced apart rod bodies 11 and end head portions 12 located at two ends of the rod bodies 11 and fixedly connected to the rod bodies 11 respectively, a slot is formed between the two rod bodies 11, a sliding ring 5 is slidably connected to the two rod bodies 11, the sliding ring 5 has an inner sliding block 52 located in the slot, the pull cable 4 extends into the slot and is connected to the inner sliding block 52, the annular groove 122 is arranged on one of the end head portions 12, and the handle cap 7 is sleeved on the end head portion 12.

[0101] Embodiment four

[0102] As shown in Figs. 18 to 22, the embodiment of the present application provides a structural schematic diagram of a first suture needle device 100 of a tissue suturing system, which comprises a handle 1, an elastic tube 2, a suture needle assembly 300, a pull cable, a sliding ring 5 and a locking assembly 6. The elastic tube 2 is connected to the handle 1 at one end, and the suture needle assembly is located at an end of the elastic tube 2 away from the handle 1. The pull cable is slidably arranged in the elastic tube 2, one end of the pull cable is drivingly connected to the suture needle assembly, the sliding ring 5 is slidably arranged on the handle 1, and the other end of the pull cable is drivingly connected to the sliding ring 5. The locking assembly 6 is arranged on the handle 1 and / or the sliding ring 5, and is used for locking the sliding ring 5 to the handle 1 or releasing the sliding ring 5.

[0103] The locking assembly 6 arranged on the suture needle device of the present application can lock the sliding ring 5 to the handle 1, so that the pull cable cannot move along the elastic tube 2, the position and state of the suture needle assembly remain fixed, the fatigue of the operator is reduced for a long time, and the operator can conveniently perform other related operations.

[0104] When the suture needle assembly 300 needs to be replaced, the operator slides the sliding ring 5 so that the releaser at the end of the pull cable extends out of the elastic tube 2, and then the sliding ring 5 can be locked to the handle 1 by operating the locking assembly 6, so that the pull cable cannot move along the elastic tube 2, the releaser remains extended out of the elastic tube 2, the operator does not need to keep hooking the sliding ring 5 to prevent it from moving forward and backward, the operator can conveniently perform the operation of assembling the new suture needle assembly 300 to the releaser, the fatigue strength of the operating fingers is reduced, the operation efficiency is improved, and the operation progress is accelerated.

[0105] In some possible embodiments, the handle 1 comprises two rods 11, the two rods 11 are connected, a through strip slot 13 is formed between the two rods 11, the locking assembly 6 is rotatably connected to the sliding ring 5, the locking assembly 6 has a locking block 61, the locking block 61 is located in the strip slot 13, the size of the locking block 61 along a first direction is greater than the distance between the two rods 11, and the size of the locking block 61 along a second direction is less than the distance between the two rods 11. The sliding ring 5 has a locked state and an unlocked state. In the locked state, the locking assembly 6 is rotated to the first direction of the locking block 61 being perpendicular to the extension direction of the rod 11, the two rods 11 are in an elastically deformed state, the locking block 61 is clamped and fixed by the two rods 11, and the sliding friction between the locking block 61 and the rod 11 is increased, so that the sliding ring 5 is locked. In the unlocked state, the locking assembly 6 is rotated to the second direction of the locking block 61 being perpendicular to the extension direction of the rod 11, and the two rods 11 return to the deformed state. The locking block 61 and the rod 11 have a gap, and under the action of an external force, the locking block 61 can smoothly slide along the rod 11. It should be noted that the first direction and the second direction can be perpendicular.

[0106] In some possible solutions, as shown in FIG. 22, the peripheral side end face of the locking block 61 comprises two length faces 611 and two width faces 612, the two length faces 611 are spaced apart and arranged in parallel, the two length faces 611 extend along the first direction, and the two width faces 612 are separately arranged on the two sides of the length faces 611. The width face 612 is smoothly connected to the two length faces 611 by an arc face 613 respectively. In the locked state, the width face 612 is fitted to the rod 11. The length face 611 and the width face 612 are smoothly connected, which reduces the rotation resistance of the locking block 61, and under the action of an external force, the locking assembly 6 can be rotated smoothly, and the operation is not laborious.

[0107] In some possible embodiments, the sliding ring 5 has a rotating slot 5113, and the locking assembly 6 has a rotating block 62 connected to the locking block 61. The rotating block 62 is rotatably connected to the rotating slot 5113 of the sliding ring 5. The rotating slot 5113 supports the rotation of the rotating block 62, and at the same time, the rotating slot 5113 limits the rotation of the rotating block 62. When the position of the rotating block 62 is fixed, the position of the sliding ring 5 is limited, so that the sliding ring 5 is fixed and cannot move along the handle 1.

[0108] In some possible embodiments, the sliding ring 5 comprises a sliding ring body and an extension shell 511 arranged on the sliding ring body. The extension shell 511 extends along the handle 1, and the rotating slot 5113 is arranged on the extension shell 511.

[0109] The rotating slot 5113 is not arranged on the sliding ring body, which does not affect the structure and modeling of the sliding ring body, and does not affect the structural strength of the sliding ring body.

[0110] In some possible embodiments, the locking assembly 6 comprises a rotating disc 63, the locking block 61 and the rotating block 62 are arranged on two sides of the rotating disc 63 along the thickness direction, and the rotating disc 63 is located between the handle 1 and the extension shell 511. The rotating disc 63 functions as a limiting part to prevent the locking block 61 from being separated from the strip groove 13, so that the locking block 61 is kept in the strip groove 13, and the reliability of the instrument is improved.

[0111] In some possible embodiments, the extension shell 511 comprises a main plate 5111 and a blocking edge 5114 arranged on two sides of the main plate 5111, the rotating groove 5113 is formed in the main plate 5111, and the rotating disc 63 is located between the two blocking edges 5114. The blocking edges 5114 on the two sides are connected perpendicularly to the main plate 5111, which strengthens the structural strength of the extension shell 511 and can shield and protect the rotating disc 63.

[0112] In some possible embodiments, the main plate 5111 is provided with a sliding-in groove 5112, the sliding-in groove 5112 is extended from the rotating groove 5113 to the edge of the main plate 5111, and the locking assembly 6 can slide to one side of the rotating groove 5113 along the sliding-in groove 5112. The sliding-in groove 5112 facilitates the assembly of the locking assembly 6 on the extension shell 511.

[0113] The suture staple device comprises a knob 65, the side of the rotating block 62 away from the locking block 61 is provided with an outer protrusion 64, the width of the outer protrusion 64 is smaller than the width of the sliding-in groove 5112, the width of the sliding-in groove 5112 is smaller than the outer diameter of the rotating groove 5113, the knob 65 is connected to the outer protrusion 64, and the knob 65 and the rotating disc 63 are limited on the two sides of the extension shell 511. The knob 65 is exposed outside the sliding ring 5, which facilitates the rotation of the knob 65 by the operator, and the sliding ring 5 can be easily locked or released.

[0114] In some possible embodiments, the knob 65 has a slot, and the outer protrusion 64 is inserted into the slot. The outer protrusion 64 can be provided in a non-cylindrical shape, for example, a flat surface is arranged on the outer protrusion 64, and a corresponding flat surface is arranged on part of the inner wall of the slot. In the state that the outer protrusion 64 is inserted into the slot, the flat surface on the outer protrusion 64 and the flat surface of the slot are in close contact, and the knob 65 and the outer protrusion 64 can only rotate synchronously and cannot rotate relatively.

[0115] Example Five

[0116] Referring to FIGS. 23-27, the second suture needle device of the tissue suturing system provided by the embodiments of the present application comprises a handle 1, an elastic tube, a suture needle assembly, a pull cable and a sliding ring 5. The handle 1 is provided with a locking portion, the elastic tube is connected to the handle 1 at one end, the suture needle assembly is located at the end of the elastic tube away from the handle 1, the pull cable is slidably arranged in the elastic tube, and one end of the pull cable is drivingly connected to the suture needle assembly. The sliding ring 5 is slidably arranged on the handle 1, the other end of the pull cable is drivingly connected to the sliding ring 5, and the sliding ring 5 has a locking matching portion. The sliding ring 5 has a locked state and an unlocked state. In the locked state, the sliding ring 5 is slid to one side of the locking portion, the locking matching portion and the locking portion are locked and matched, and the sliding of the sliding ring 5 along the handle 1 is limited. In the unlocked state, the locking matching portion and the locking portion are separated, as shown in FIG. 23.

[0117] The locking portion provided on the handle 1 of the suture needle device can lock the sliding ring 5 on the handle 1, so that the pull cable cannot move along the elastic tube, the position and state of the suture needle assembly remain fixed, the fatigue of the operator is reduced for a long time, and the operator can conveniently perform other related operations.

[0118] When the suture needle assembly needs to be replaced, the operator slides the sliding ring 5 to make the releaser at the end of the pull cable extend out of the elastic tube. At this time, the locking matching portion and the locking portion are locked and matched to lock the sliding ring 5 on the handle 1, the pull cable cannot move along the elastic tube, the releaser remains extended out of the elastic tube, the operator does not need to hook the sliding ring 5 to prevent it from moving forward and backward, the operator can conveniently assemble the new suture needle assembly on the releaser, the fatigue strength of the operating finger is reduced, the operation efficiency is improved, and the operation progress is accelerated.

[0119] In some possible embodiments, the locking portion comprises an elastic block 111 provided on the handle 1, the locking matching portion comprises a protruding block 5211 provided on the sliding ring 5, in the locked state, the protruding block 5211 abuts against the elastic block 111, the elastic block 111 is elastically deformed, the elastic force between the protruding block 5211 and the elastic block 111 is large, the resistance of relative movement is large, and the sliding ring 5 cannot easily move along the handle 1. In the unlocked state, the protruding block 5211 is separated from the elastic block 111, and the elastic block 111 restores the deformation. In the locked state, in order to switch to the unlocked state, a large enough external force needs to be applied to the sliding ring 5 to separate the elastic block 111 and the protruding block 5211.

[0120] In some possible implementation, the locking part includes a clamping block 1111 arranged on the surface of the elastic block 111, and in the locked state, the clamping block 1111 is clamped on the side of the convex block 5211 away from the elastic tube. The clamping block 1111 and the convex block 5211 are clamped and matched, and are not easily clamped off, so that the sliding ring 5 is stably in the locked state.

[0121] In some possible implementation, the sliding ring 5 includes an outer sleeve body 51 and an inner sliding block 52, the handle 1 includes two rod bodies 11 arranged at intervals, a strip slot 13 is formed between the two rod bodies 11, the elastic block 111 is arranged on the rod body 11, the outer sleeve body 51 is slidably arranged outside the two rod bodies 11, the inner sliding block 52 is slidably arranged in the strip slot 13, the inner sliding block 52 is connected to the outer sleeve body 51, and the convex block 5211 is arranged on the inner sliding block 52.

[0122] Referring to FIG. 26, the rod body 11 is provided with a slot 112 communicating with the strip slot 13, and the slot 112 circumscribes to form the elastic block 111. That is, the elastic block 111 is a slotted block, which is formed by the slot 112 on the rod body 11. The elastic block 111 and the rod body 11 are an integral part, one end of the elastic block 111 is connected to the main structure of the rod body, and the other end of the elastic block 111 is suspended.

[0123] Specifically, the slot 112 includes two first slots 1121 and one second slot 1122. The two first slots 1121 each extend along the length direction of the handle 1, and the two first slots 1121 are sequentially arranged along the circumferential direction of the handle 1. The second slot 1122 extends along the circumferential direction of the handle 1, and the second slot 1122 communicates with one end of the two first slots 1121.

[0124] In the locked state, the inner wall of the outer sleeve body 51 is attached to the side of the elastic block 111 away from the strip slot 13. And because the outer sleeve body 51 on the outside has a protective effect on the elastic block 111, the elastic block 111 is limited on the outside, so that the elastic block 111 can be elastically abutted with the convex block 5211, and the locking structure will not easily fail.

[0125] In some possible implementation, the inner wall of the outer sleeve body 51 is provided with a limiting groove 512 and a clamping groove 513, the inner sliding block 52 is provided with a positioning block 5212 and a clamping jaw 5221, the positioning block 5212 of the inner sliding block 52 is embedded in the limiting groove 512, and the clamping jaw 5221 is clamped in the clamping groove 513. The limiting groove 512 and the clamping groove 513 limit the movement of the inner sliding block 52 relative to the outer sleeve body 51. The outer sleeve body and the inner sliding block 52 are clamped and limited in cooperation, and can only move synchronously along the handle 1.

[0126] As shown in FIG. 27, the inner sliding block 52 has a main block 521 and an extension body 522 connected to one end of the main block 521, and the extension body 522 is provided with a clamping jaw 5221 at an end away from the main block 521, and the main block 521 is provided with a positioning block 5212 at an end away from the clamping jaw.

[0127] In some possible implementation, the inner sliding block 52 includes two half blocks, and the convex block 5211 includes half convex blocks arranged on the two half blocks, and the two half blocks are detachably connected, and the two half convex blocks 5211 are spliced to form the convex block 5211 in a state where the two half blocks are connected. One of the two half blocks is provided with a plug shaft, and the other is provided with a plug shaft hole, and the plug shaft is inserted into the plug shaft hole to form an integrated structure, and the two half blocks are synchronously moved along the handle 1.

[0128] Embodiment six

[0129] As shown in FIGS. 28-31, the third suture needle device of the tissue suturing system provided in the embodiment of the application includes a handle 1, an elastic tube, a suture needle assembly, a pull cable and a sliding ring 5. The handle 1 is provided with a handle cap 7 having a locking portion at an end thereof, and the elastic tube is connected to the handle cap 7 at one end. The suture needle assembly is located at an end of the elastic tube away from the handle 1, the pull cable is slidably arranged in the elastic tube, one end of the pull cable is drivingly connected to the suture needle assembly, and the sliding ring 5 is slidably arranged in the handle 1, and the other end of the pull cable is drivingly connected to the sliding ring 5. The sliding ring 5 has a locking matching portion, and the sliding ring 5 has a locking state, in which the sliding ring 5 is slid to one side of the handle cap 7, and the locking matching portion and the locking portion are locked and matched.

[0130] The locking portion provided on the handle cap 7 of the suture needle device can lock the sliding ring 5 on the handle cap 7, so that the pull cable cannot move along the elastic tube, the position and state of the suture needle assembly remain fixed, the fatigue of the operator is reduced, and the operator can conveniently perform other related operations.

[0131] When the suture needle assembly 300 needs to be replaced, the operator slides the sliding ring 5 to make the releaser 8 at the end of the pull cable extend out of the elastic tube. At this time, the sliding ring 5 and the handle cap 7 are in contact, the locking matching portion and the locking portion are locked and matched, the sliding ring 5 is locked on the handle cap 7, the pull cable cannot move along the elastic tube, and the releaser 8 remains extended out of the elastic tube. The operator does not need to hook the sliding ring 5 to prevent it from moving forward and backward, the operator can conveniently assemble the new suture needle assembly 300 on the releaser 8, the fatigue strength of the operating fingers is reduced, the operation efficiency is improved, and the operation progress is accelerated.

[0132] In some possible embodiments, the handle 1 comprises two spaced-apart rods 11, a slot 13 is formed between the two rods 11, the handle cap 7 is located at one end of the two rods 11 and is sleeved on the two rods 11. The sliding ring 5 comprises an outer sleeve 51 and an inner slider 52, the outer sleeve 51 is sleeved on the outside of the two rods 11 in a slidable manner, the inner slider 52 is arranged in the slot 13 in a slidable manner, the inner slider 52 is connected to the outer sleeve 51, and the locking matching part is arranged on the inner slider 52. In the locked state, the outer sleeve 51 abuts against the handle cap 7, the end of the inner slider 52 extends into the inside of the handle cap 7, so that the locking matching part on the inner slider 52 and the locking part on the handle cap 7 are locked and matched.

[0133] In some possible embodiments, the locking part comprises a bayonet 71 arranged on the handle cap 7, the locking matching part comprises a first clamping jaw 5222 arranged on the inner slider 52, and in the locked state, the first clamping jaw 5222 is clamped on the bayonet 71. The locking part and the locking matching part are clamped and matched in a clamping structure, which is simple in structure and reliable in locking structure.

[0134] In some possible embodiments, the inner slider 52 has a main block 521 and an extension body 522, the main block 521 is located inside the outer sleeve 51, one end of the extension body 522 is connected to the main block 521, and the other end of the extension body 522 extends out of the outer sleeve 51 and is provided with the first clamping jaw 5222.

[0135] The extension body 522 extends out of the outer sleeve 51, and when the outer sleeve 51 slides to abut against the handle cap 7, the extension body 522 extends into the inside of the handle cap 7 to be clamped on the handle cap 7.

[0136] In some possible embodiments, the handle cap 7 comprises a cap body and an unlocking part 72, the cap body is provided with the bayonet 71, the unlocking part 72 is located in the bayonet 71 and is connected to the cap body, under the action of an external force, the unlocking part 72 can move to the inside of the bayonet 71 to push the first clamping jaw 5222 away from the bayonet 71. When there is no external force, the unlocking part 72 and the first clamping jaw 5222 have a gap, the first clamping jaw 5222 is not pushed, and the first clamping jaw 5222 can be stably clamped on the bayonet 71. The unlocking part 72 can be integrally formed with the cap body or can be a structural part added to the cap body. The unlocking part 72 has a certain elastic deformation capacity and can restore the deformation when the external force is removed.

[0137] In some possible embodiments, the unlocking portion 72 is provided with a relief gap 721 on one side of the handle 1, and the first clamping jaw 5222 partially extends into the relief gap 721 in the locked state. By providing the relief gap 721 on the unlocking portion 72, the first clamping jaw 5222 is provided with a space for accommodation, and the space is fully utilized, so that the overall structure of the instrument is compact, and the size of the instrument is reduced.

[0138] In some possible embodiments, the unlocking portion 72 has an outer protrusion 722 protruding from the bayonet 71. When the unlocking of the slip ring 5 is required, the outer protrusion 722 is pressed by the fingers of the operator, so that the unlocking portion 72 is deformed inwardly of the handle cap 7 to abut against the first clamping jaw 5222, so that the first clamping jaw 5222 is separated from the bayonet 71.

[0139] In some possible embodiments, the handle cap 7 is provided with a slot communicating with the strip slot 13, and the unlocking portion 72 is formed by the slot. That is, the unlocking portion 72 is a slot block formed by the slot in the handle cap 7. The unlocking portion 72 and the cap body are an integral piece, one end of the unlocking portion 72 is connected to the cap body, and the other end of the unlocking portion 72 is suspended. The unlocking portion 72 is a cantilever structure.

[0140] In some possible embodiments, the inner wall of the outer sleeve body 51 is provided with a limiting recess 512 and a clamping groove 513, the main block 521 of the inner sliding block 52 is provided with a positioning block 5212, the extension body 522 is provided with a second clamping jaw 5223, the positioning block 5212 is embedded in the limiting recess 512, and the second clamping jaw 5223 is clamped in the clamping groove 513. The outer sleeve body and the inner sliding block 52 are clamped and limited in cooperation, and can only move synchronously along the handle 1. The second clamping jaw 5223 is located between the first clamping jaw 5222 and the main block 521, and does not affect the clamping and cooperation of the first clamping jaw 5222 and the handle cap 7.

[0141] Example Seven

[0142] Referring to FIGS. 32-36, the fourth suture needle device of the tissue suturing system provided by the embodiments of the present application comprises a handle 1, a handle cap 7, an elastic tube 2, a pull cable 4 and a sliding ring 5. The handle cap 7 is rotatably connected to one end of the handle 1. A rotary driving assembly 73 is arranged on the handle cap 7. The rotary driving assembly 73 is in transmission connection with the handle 1. The rotary driving assembly 73 comprises an indicating block 732. One end of the elastic tube 2 is connected to the handle 1. The pull cable 4 is slidably arranged in the elastic tube 2. One end of the pull cable 4 is connected with a suture needle assembly 300. The sliding ring 5 is slidably arranged in the handle 1. The sliding ring 5 is in transmission connection with the other end of the pull cable 4. The handle 1 and the sliding ring 5 can rotate synchronously. In the state that the handle 1 and the sliding ring 5 rotate around the handle cap 7, the sliding ring 5 can drive the suture needle assembly 300 to rotate through the pull cable 4, so that the suture needle assembly 300 can be screwed into the human tissue. The handle 1 can drive the indicating block 732 of the rotary driving assembly 73 to move along the length direction of the handle 1. The more the handle 1 rotates, the longer the indicating block 732 moves. The moving distance of the indicating block 732 represents the depth of the suture needle assembly 300 implanted into the tissue. The depth of the suture needle assembly 300 implanted into the human tissue can be easily grasped by the operator, which helps the operator to complete the operation accurately and efficiently.

[0143] In some possible embodiments, referring to FIGS. 33 and 34, the handle cap 7 has a cap cavity 75 and a guide groove 74 communicating with the cap cavity 75. The rotary driving assembly 73 comprises a rotary linkage 731 rotatably arranged in the cap cavity 75. The rotary linkage 731 has external threads. The indicating block 732 is slidably arranged in the guide groove 74 and is in threaded connection with the rotary linkage 731. One end of the handle 1 extends into the cap cavity 75 and is in transmission cooperation with the rotary linkage 731. The handle 1 and the rotary linkage 731 can rotate synchronously. In the embodiments of the present application, the rotary driving assembly 73 adopts the cooperation structure of nut and screw. The indicating block 732 can be translated along the length direction of the rotary linkage 731 by rotating the rotary linkage 731 through the handle 1.

[0144] The inner wall of the handle cap 7 is provided with a guide rib 70 extending along the circumference of the handle cap 7, and one end of the handle 1 is provided with an annular groove 122 extending along the circumference of the handle 1. In the state that the handle cap 7 is sleeved on the handle 1, the guide rib 70 is embedded in the annular groove 122. The guide rib 70 is not a closed annular, and the inner wall of the handle cap 7 can be provided with a plurality of guide ribs 70, each of which is sequentially arranged along the circumference of the handle cap 7, and has a disconnected area between adjacent guide ribs 70, thereby facilitating the insertion and installation of the end of the handle 1 in the handle cap. The handle cap 7 is a plastic structure with a certain deformation ability, and each guide rib 70 is not a closed annular. Under the action of sufficient external force, the end of the handle 1 can be inserted in the handle cap 7 by slight deformation, so that the guide rib 70 is clamped into the annular groove 122.

[0145] In some possible embodiments, the handle cap 7 has a support groove 76 communicating with the cap cavity 75, the support groove 76 is located on the side of the cap cavity 75 away from the handle 1, the rotating linkage 731 includes a screw rod part 7311 and rotating shafts 7312 and linkage shafts 7313 separately arranged at both ends of the screw rod, the screw rod part 7311 is located in the cap cavity 75, the indicating block 732 is threadedly connected to the screw rod, the rotating shafts 7312 are connected to the support groove 76, and the linkage shafts 7313 are drivingly matched with the handle 1, so that both ends of the rotating shafts 7312 can be effectively supported.

[0146] In some possible embodiments, the end of the handle 1 is provided with a limiting slot 121, and the linkage shafts 7313 are inserted into the limiting slot 121, so that the linkage shafts 7313 rotate synchronously with the handle 1. The limiting slot 121 is not a circular hole, and the cross section of the linkage shafts 7313 is also not circular. In the state that the linkage shafts 7313 are inserted into the limiting slot 121, the linkage shafts 7313 cannot rotate relative to the handle 1.

[0147] In some possible embodiments, the end of the handle 1 located at the mouth of the limiting slot 121 is provided with an outwardly expanding slope and / or the end of the linkage shafts 7313 away from the rotating shafts 7312 is provided with a narrowing slope, so that the linkage shafts 7313 can be smoothly inserted into the limiting slot 121 of the handle 1.

[0148] In some possible embodiments, the indicating block 732 has a main body section 7321 and an indicating section 7322, the main body section 7321 has a greater thickness than the indicating section 7322, a through-threaded slot 7323 is formed on the end face of the main body section 7321, the main body section 7321 is located in the cap cavity 75 and is threadedly connected to the rotating linkage 731 through the threaded slot 7323, and the indicating section 7322 is connected to the main body section 7321 at one end and extends to the guide slot 74 at the other end.

[0149] The main body section 7321 has a large volume and is convenient for the threaded slot 7323, and the indicating section 7322 can have a gradually narrowing structure, which can reduce the volume and avoid frictional interference with the guide slot 74, and can smoothly move along the guide slot 74.

[0150] In some possible embodiments, the cap cavity 75 has two opposite limiting inner walls, the two limiting inner walls are located on both sides of the main body section 7321 along the thickness direction, and limit the rotation of the main body section 7321 around the rotating linkage 731, so that the main body section 7321 can only move under the drive of the screw rod part 7311 and cannot rotate with the screw rod part 7311.

[0151] In some possible embodiments, the handle cap 7 is provided with a scale marking part (not shown), and the scale marking part is arranged along the length direction of the guide slot 74. The scale marking part can facilitate the operator to quickly know the implantation depth of the staple assembly 300 and assist the operator to perform precise and efficient surgical operations.

[0152] In some possible embodiments, the depth-controllable staple device includes a pull cable 4 and a sliding ring 5, the sliding ring 5 is slidably arranged on the handle 1, the rotating linkage 731 has a through slot, the pull cable 4 is arranged through the through slot, and the pull cable 4 is connected to the sliding ring 5. During the sliding of the sliding ring 5 along the handle 1, the pull cable 4 can slide along the through slot of the rotating linkage 731. During the synchronous rotation of the handle 1 and the sliding ring 5, the handle 1 drives the rotating linkage 731 to rotate, and the sliding ring 5 drives the pull cable 4 to rotate synchronously with the handle.

[0153] Embodiment Eight

[0154] Referring to Figs. 37-43, the tissue suturing system further comprises a suture cutting assembly for cutting the suture 500. It comprises a suture fixing mechanism, a suture cutting mechanism 430 and a driving wire 440. The suture fixing mechanism comprises a first suture fixing member 410 having a through suture slot 411 and a second suture fixing member 420 connectable to the first suture fixing member 410 to close the mouth of the suture slot 411. The suture cutting mechanism 430 comprises an inner cylinder member 431 and an outer cylinder member 432. The inner cylinder member 431 is sleeved on the first suture fixing member 410 and has a first suture cutting mouth 43111 and two wire holes 43131. The outer cylinder member 432 is sleeved on the outside of the inner cylinder member 431 and has a second suture cutting mouth 4321. The driving wire 440 has two long wires 441. One end of each of the long wires 441 is used for connecting a pulling end and the other end of each of the long wires 441 is connected to each other. The long wires 441 are sleeved on the outer cylinder member 432 and the inner cylinder member 431 and pass through the wire holes 43131 respectively. The suture cutting assembly 400 has a pre-cutting state and a post-cutting state. In the pre-cutting state, as shown in Fig. 39, the long wires 441 pass through the suture slot 411 and are limited on the second suture fixing member 420. In the post-cutting state, as shown in Figs. 41 and 42, the long wires 441 are separated from the second suture fixing member 420 and are limited on the wire holes 43131 of the inner cylinder member 431.

[0155] In the pre-cutting state, referring to Figs. 38 and 39, the first wire fixing member 410 and the second wire fixing member 420 are separated, the wire guide tube 600 is sequentially threaded through the mouth of the suture slot 411, the first cutting port 43111 and the second cutting port 4321, and the suture 500 is threaded in the wire guide tube, and finally the wire guide tube 600 is removed, and the suture 500 is sequentially threaded through the mouth of the suture slot 411, the first cutting port 43111 and the second cutting port 4321. When the suture 500 needs to be cut, the operator pulls the driving wire 440, which first moves the second wire fixing member 420 to the first wire fixing member 410, so that the first wire fixing member 410 and the second wire fixing member 420 are connected and fixed, and the suture 500 is clamped and fixed, as shown in Fig. 40. Continue to pull the driving wire 440, as shown in Figs. 41 and 42, the driving wire 440 will be limited on the two wire holes 43131 of the inner cylinder member 431, because the two filament ends of the driving wire 440 are connected and fixed, so they will not easily come off the inner cylinder member 431. Under the driving action of the driving wire 440, the inner cylinder member 431 slides relative to the outer cylinder member 432, and the first cutting port 43111 and the second cutting port 4321 cooperate to cut the suture. At this time, the wire fixing mechanism is left in the human body with the suture 500. The outer cylinder member 432 and the elastic tube 2 of the wire cutting device are connected and fixed, and the inner cylinder member 431 and the outer cylinder member 432 are clearance fitted. After cutting the suture 500, the operator can remove the elastic tube 2 from the forceps channel of the endoscope to complete the operation.

[0156] The inner cylinder member 431 of the suture cutting assembly 400 of the present application is provided with two wire holes 43131, and the driving wire 440 is arranged through the two wire holes 43131. In the process of cutting the suture 500, the filaments 441 are limited on the two limiting holes and will not come off the inner cylinder member 431, which is highly reliable and has good product quality stability.

[0157] In some possible embodiments, the inner cylinder member 431 includes a cylinder body, two wire holes 43131 can be directly provided on the cylinder body, or the inner cylinder member 431 further includes a limiting member 4313, the cylinder body has a cylinder cavity, the limiting member 4313 is accommodated in the cylinder cavity, the cylinder body limits the limiting member 4313 from coming off the cylinder cavity, and two wire holes 43131 are provided on the limiting member 4313. The two filaments 441 are threaded in the cylinder cavity and respectively pass through the corresponding wire holes 43131.

[0158] With reference to FIG. 39, the barrel includes a barrel wall 4311, one end of which is open, and the other end of which is provided with an end plate 4312. The open end of the barrel wall 4311 can be sleeved on the first wire fixing member 410. The end plate 4312 is provided with a through hole 43121. The two filaments 441 respectively pass through the through hole 43121 on the end plate 4312. After the driving wire 440 is separated from the second wire fixing member 420, the limiting member 4313 can be moved so that the limiting member 4313 can be attached to the end plate 4312, thereby allowing the inner barrel member 431 to be continuously pulled.

[0159] In some possible embodiments, as shown in FIG. 43, the limiting member 4313 is in the shape of a sheet, and a wire hole 43131 passes through the limiting member 4313 in the thickness direction of the limiting member 4313.

[0160] The limiting member 4313 can be a circular sheet, the outer diameter of which is smaller than the inner diameter of the barrel wall 4311 and larger than the through hole 43121 on the end plate 4312. The limiting member 4313 will not be separated from the barrel by the through hole 43121.

[0161] The two filaments 441 are an integral member. The filaments 441 pass through the two wire holes 43131 in sequence to form a double-wire structure.

[0162] The second wire fixing member 420 has a limiting groove 421. The driving wire 440 is bent to form an elbow 442. The two filaments 441 are respectively on the two sides of the elbow 442. The two filaments 441 both pass through the limiting groove 421. The elbow 442 is limited in the slot of the limiting groove 421. When the pulling force of the driving wire 440 is large enough, the elbow 442 part of the driving wire 440 will be separated from the limiting groove 421.

[0163] In some possible embodiments, the second wire fixing member 420 has a containing groove 422 communicating with the limiting groove 421. The limiting groove 421 and the containing groove 422 pass through the second wire fixing member 420 in cooperation. The inner diameter of the containing groove 422 is larger than the inner diameter of the limiting groove 421. The elbow 442 is accommodated in the containing groove 422.

[0164] The wire cutting assembly 400 includes a plug 423 which is detachably connected to the second wire fixing member 420 to cover or open the slot of the containing groove 422.

[0165] The application further provides a thread cutting device, which comprises a handle 1, an elastic tube 2 and the thread cutting assembly 400.

[0166] Embodiment nine

[0167] The application provides a suture needle changing method of a tissue suturing system, which comprises the following steps.

[0168] In step S1, the suture needle device is operated so that the releaser 8 extends out of the elastic tube 2.

[0169] In this step, the suture needle device is slid along one side of the elastic tube 2, so that the cable 4 pushes the releaser 8 to extend out of the elastic tube 2, thereby facilitating the subsequent suture needle changing operation.

[0170] In step S2, referring to FIGS. 6 and 7, the suture needle device 200 is pinched to hold the suture needle assembly 300, and the position of the suture needle device 200 is adjusted so that the connecting barrel 320 of the suture needle assembly 300 is sleeved on the releaser 8.

[0171] In step S3, referring to FIGS. 8 and 9, the suture thread 500 is inserted along the thread passing cavity 213 on the suture needle device 200, so that the suture thread 500 penetrates through the suture thread fixing hole 331 of the suture needle assembly 300.

[0172] In step S4, referring to FIG. 10, the pinch end of the clamping member 210 is pinched, so that the pinch ends of the two clamping members 210 are separated to release the suture needle assembly 300.

[0173] Optionally, the releaser 8 has an outer protruding rib 81, and the inner wall of the connecting barrel 320 is provided with an inner protruding rib 321.

[0174] In step S2, under the action of an external force, the connecting barrel 320 moves along the releaser 8, so that the inner protruding rib 321 of the connecting barrel 320 is clamped on one side of the releaser 8 close to the elastic tube 2.

[0175] Optionally, referring to FIG. 6, in step S2, the pinch ends of the two clamping members 210 of the suture needle device 200 are pinched, so that the clamping members 210 hold the suture needle assembly 300, thereby preventing the suture needle assembly 300 from being unstable and easily shaking on the suture needle device 200 during the installation of the suture needle assembly 300.

[0176] Optionally, the suture needle device comprises a handle 1, a pull cable 4 and a sliding ring 5, the elastic tube 2 is connected to the handle 1 at one end, the pull cable 4 is slidably arranged in the elastic tube 2, one end of the pull cable 4 is connected to the release device 8, the sliding ring 5 is slidably arranged in the handle 1, and the other end of the sliding ring 5 is in transmission connection with the other end of the pull cable 4;

[0177] In step S1, the sliding ring 5 is pushed to one side of the elastic tube 2, so that the release device 8 extends out of the elastic tube 2.

[0178] Optionally, in step S1, when the sliding ring 5 is adjusted to make the release device 8 extend out of the elastic tube 2, the sliding ring 5 can be locked on the handle 1 by a locking mechanism, at this time the release device 8 remains extended out of the elastic tube 2, the operator does not need to keep hooking the sliding ring 5 to prevent it from moving back and forth, and the operator can conveniently perform the operation of assembling a new suture needle assembly 300 on the release device 8, the fatigue strength of the operating fingers is reduced, the operation efficiency is improved, and the operation progress is accelerated.

[0179] Embodiment ten

[0180] The embodiment ten of the present application provides an operation method of a tissue suturing system, comprising:

[0181] Step S100, operating the suture needle device so that the suture needle assembly 300 installed at the end of the suture needle device is located at a target position of soft tissue;

[0182] In this step, the elastic tube 2 of the suture needle device is slid along the channel of the endoscope, so that the suture needle assembly at the end is moved to the target position of the tissue.

[0183] Step S200, rotating the handle 1 of the suture needle device so that the suture needle assembly 300 is anchored on the soft tissue;

[0184] Rotating the handle 1, the sliding ring 5 and the pull cable 4 will rotate synchronously, thereby driving the suture needle assembly to rotate, so that the suture needle assembly is rotated into the tissue.

[0185] In this step, the operator can pay attention to the indicating block 732, and according to the distance or position of the movement of the indicating block 732, the depth of the suture needle assembly implanted in the tissue can be judged, when the depth of the suture needle assembly implanted in the tissue is sufficient, the operator can stop rotating the handle 1.

[0186] Step S300, moving the sliding ring 5 to the side away from the handle cap 7, driving the release device 8 at the end of the pull cable 4 to retract into the elastic tube 2, so that the suture needle assembly 300 is separated from the release device 8;

[0187] In this step, the outer diameter of the suture needle assembly 300 is greater than that of the elastic tube 2, when the release device 8 retracts into the elastic tube 2, the suture needle assembly 300 will naturally fall off and be separated from the release device 8.

[0188] Step S400, determine whether the implantation is finished, if the result is yes, go to step S600, otherwise go to step S500;

[0189] Step S500, install a new staple assembly 300 on the staple device, go to step S100;

[0190] Step S600, cut the suture 500.

[0191] Step S500 includes:

[0192] Step S510: move the sliding ring 5 of the staple device to the side of the handle cap 7, so that the release 8 at the end of the pull cable 4 extends out of the elastic tube 2, and the locking mechanism on the staple device locks the sliding ring 5, so that the release 8 remains extended out of the elastic tube 2;

[0193] In this step, by sliding the sliding ring 5 to the side of the elastic tube 2, the pull cable 4 can push the release 8 out of the elastic tube 2, facilitating subsequent staple replacement operations. When adjusting the sliding ring 5 to make the release 8 extend out of the elastic tube 2, the sliding ring 5 can be locked on the handle 1 by the locking mechanism, at which time the release 8 remains extended out of the elastic tube 2, and the operator does not need to keep hooking the sliding ring 5 to prevent it from moving back and forth, so the operator can easily perform the operation of assembling a new staple assembly 300 on the release 8, reducing the fatigue strength of the operating fingers and improving the operation efficiency, thereby speeding up the surgical progress.

[0194] Step S520: pinch the staple replacement device 200 with the staple assembly 300, adjust the position of the staple replacement device 200 so that the staple assembly 300 is connected to the release 8;

[0195] In this step, the clamping ends of the two clamping pieces 210 of the staple replacement device 200 are pinched, so that the clamping pieces 210 remain clamped on the staple assembly 300, preventing the staple assembly 300 from being unstable in position on the staple replacement device 200 and easily shaking during the installation of the staple assembly 300.

[0196] Step S530, pass the suture through the threading cavity 213 on the staple replacement device 200, so that the suture passes through the suture 500 fixing hole 331 of the staple assembly 300;

[0197] Step S540, pinch the clamping ends of the clamping pieces 210 to separate the clamping ends of the two clamping pieces 210 to release the staple assembly 300, completing the installation of the staple assembly.

[0198] In step S600, before cutting the suture 500, the first wire fixing member 410 and the second wire fixing member 420 are separated, the guide wire tube 600 is sequentially threaded through the opening of the suture slot 411, the first cutting wire opening 4311 and the second cutting wire opening 4321, the suture 500 is threaded on the guide wire tube 600, and finally the guide wire tube 600 is removed, and the suture 500 is sequentially threaded through the opening of the suture slot 411, the first cutting wire opening 4311 and the second cutting wire opening 4321. When it is necessary to cut the suture 500, the operator pulls the driving wire 440, the driving wire 440 first drives the second wire fixing member 420 to move to the first wire fixing member 410, so that the first wire fixing member 410 and the second wire fixing member 420 are connected and fixed, and the suture 500 is clamped and fixed. Continue to pull the driving wire 440, the driving wire 440 will be disengaged from the second wire fixing member, and be limited on the two wire holes 4313 of the inner cylinder member 431, so that the two wire ends of the driving wire 440 are connected and fixed, and thus will not easily disengage from the inner cylinder member 431. Under the driving action of the driving wire 440, the inner cylinder member 431 slides relative to the outer cylinder member 432, and the first cutting wire opening 4311 and the second cutting wire opening 4321 cooperate to cut the suture. At this time, the wire fixing mechanism remains in the human body with the suture 500. The outer cylinder member 432 and the elastic tube 2 of the wire cutting assembly 400 are connected and fixed, and the inner cylinder member 431 and the outer cylinder member 432 are in clearance fit. After cutting the suture 500, the operator removes the elastic tube 2 from the forceps channel of the endoscope to complete the operation.

[0199] The above disclosure provides many different embodiments or examples for implementing different structures of the present application. For simplicity of the disclosure, the above description of certain examples have not included the description of all possible embodiments or examples. Consequently, the description is intended to include alternative examples and embodiments for implementing the application. Additionally, the above disclosure provides examples of various specific processes and materials that can be used in the present application. However, it is contemplated that other processes and / or materials can be used without departing from the scope of the present application.

[0200] Although preferred embodiments of the application have been described, a worker of ordinary skill in the art would recognize that variations and modifications of the preferred embodiments could be made without departing from the spirit and scope of the application. Accordingly, it is intended that the appended claims include all such variations and modifications as falling within the scope of the application.

[0201] Obviously, many modifications and variations of the present application are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A needle changer characterized by comprising: The application relates to a suture needle changing device. Two clamping pieces are rotatably connected, the clamping pieces are located on both sides of a rotating axis and are respectively a clamping end and a pinching end, the clamping end is provided with a containing groove, a limiting groove and a threading groove, the limiting groove is located at the end of the clamping end and is communicated with the containing groove; An elastic piece is arranged between the two clamping pieces, under the action of the elastic piece, the clamping ends of the two clamping pieces are attached to each other, the containing grooves of the two clamping ends are communicated to form a containing cavity, the limiting grooves of the two clamping ends are communicated to form a limiting cavity, and the threading grooves of the two clamping ends are communicated to form a threading cavity; In a state where a spring section of a suture needle assembly is arranged in the containing cavity, a suture fixing part of the suture needle assembly is limited in the limiting cavity, and the threading cavity is communicated with a suture fixing hole of the suture fixing part; Under the action of an external force applied to the pinching end, the clamping ends of the two clamping pieces are separated to release the suture needle assembly.

2. The device of claim 1, wherein: The limiting cavity comprises two first limiting faces and a second limiting face; The two first limiting faces extend along the length direction of the containing groove, and the two first limiting faces have a gap therebetween; the second limiting face is located on the side of the first limiting face close to the pinching end, and the second limiting face is perpendicularly connected to the two first limiting faces; In a state where the suture fixing part is limited in the limiting cavity, the two first limiting faces are limited on both sides of the suture fixing part along the circumferential direction of the needle changing device to limit the rotation of the suture fixing part, and the second limiting face is limited on the side of the suture fixing part close to the pinching end to limit the movement of the suture fixing part to the side of the pinching end.

3. The device of claim 2, wherein: The threading cavity comprises a first opening located on the outer surface of the two clamping pieces and a second opening located on the second limiting face of the limiting cavity; In a state where the suture fixing part of the suture needle assembly is limited in the limiting cavity, the second opening is communicated with the suture fixing hole of the suture fixing part.

4. The device of claim 3, wherein: In the direction from the first opening to the second opening, the cross-sectional area of the threading cavity gradually decreases.

5. The device of claim 1, wherein: The application further relates to a suture needle changing device. The clamping piece is provided with a hinged seat; The rotating shaft is respectively arranged in the hinged seat of the two clamping pieces; The elastic piece is a torsion spring, the spiral section of the torsion spring is sleeved on the rotating shaft, and the two torsion arms of the torsion spring are respectively abutted against the two clamping pieces.

6. A tissue stapling system comprising: The application further relates to a suture needle changing device. The suture needle changing device is used for clamping the spring section of the suture needle assembly to expose the connecting barrel of the suture needle assembly so as to be sleeved on the releaser. The application further relates to a suture needle changing method.

7. The method of changing a staple of a tissue stapling system according to claim 6, wherein, Step S1: operating the suture needle changing device to make the releaser extend out of the elastic tube; Step S2: pinching the suture needle changing device provided with the suture needle assembly and adjusting the position of the suture needle changing device to make the connecting barrel of the suture needle assembly be sleeved on the releaser; Step S3: threading the suture along the threading cavity on the suture needle changing device to make the suture pass through the suture fixing hole of the suture needle assembly; Step S4: pinching the pinching end of the clamping piece to make the clamping ends of the two clamping pieces be separated to release the suture needle assembly. The releaser is provided with an outer convex rib, and the inner wall of the connecting barrel is provided with an inner convex rib.

8. The method of changing a needle of a tissue stapling system according to claim 7, wherein, ​ In step S2, under the action of external force, the connecting cylinder moves along the release device, so that the inner convex ribs of the connecting cylinder are clamped on the side of the elastic tube close to the outer convex ribs of the release device.

9. The method of changing a needle of a tissue stapling system according to claim 7, wherein, In step S2, the clamping ends of the two clamping members of the pinch staple changing device are pinched, so that the clamping members hold the suture staple assembly.

10. The method of changing a needle of a tissue stapling system according to claim 7, wherein, The suture staple device comprises a handle, a pull cable and a sliding ring, one end of the elastic tube is connected to the handle, the pull cable is slidably arranged in the elastic tube, one end of the pull cable is connected to the release device, the sliding ring is slidably arranged in the handle, and the other end of the pull cable is in transmission connection with the sliding ring. In step S1, the sliding ring is pushed to one side of the elastic tube, so that the release device extends out of the elastic tube.

11. The method of changing a needle of a tissue stapling system according to claim 10, wherein, In step S1, when the sliding ring is adjusted to make the release device extend out of the elastic tube, the sliding ring is locked on the handle by the locking mechanism.

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