Tissue suturing system and operation method therefor

Abstract

Provided are a tissue suturing system and an operation method therefor. The tissue suturing system comprises a surgical staple apparatus (100) and a surgical staple assembly (300). The surgical staple apparatus (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). One end of the elastic tube (2) is connected to the handle cap (7). The surgical staple assembly (300) is located at one end of the elastic tube (2) distal to the handle (1). The pull cable (4) is slidably arranged in the elastic tube (2) in a penetrating manner. One end of the pull cable (4) is detachably connected to the surgical staple assembly (300). The sliding ring (5) is slidably arranged on the handle (1). The sliding ring (5) is connected to the other end of the pull cable (4). The sliding ring (5) moves along the handle (1), and the surgical staple assembly (300) can be driven by means of the pull cable (4) to move along an extension direction of the elastic tube (2); the handle (1) rotates around the handle cap (7), and the surgical staple assembly (300) can be driven by means of the pull cable (4) to rotate synchronously. The operation of controlling the rotation of the surgical staple assembly (300) and the operation of controlling the extension and retraction of the surgical staple assembly (300) are independent from each other, which is convenient for surgeons to separately control, facilitating the improvement of the operation precision. Therefore, the surgical quality is improved.

Description

A tissue suturing system and a method of operating the same TECHNICAL FIELD

[0001] The present application relates to the technical field of daily necessities, in particular to a tissue suturing system and a method of operating the same. BACKGROUND

[0002] With the development of medical science and technology, minimally invasive surgery with the help of an endoscope has gradually become the mainstream of current diagnosis and treatment of gastrointestinal diseases. The endoscope itself, as an examination instrument, cannot realize the function of surgery, and usually a surgeon needs to use a minimally invasive medical instrument to pass through the channel hole of the endoscope, so as to reach the target lesion position along the lens of the endoscope, and then the surgeon uses the minimally invasive medical instrument to perform corresponding surgical operation on the target lesion position.

[0003] The suturing staple device is a common minimally invasive medical instrument, which usually includes a handle, a handle cap, a pull cable, an elastic tube and a suturing staple assembly. The handle cap is rotatably connected to the handle, the elastic tube is connected to the handle cap, the pull cable is located inside the elastic tube, the free end of the pull cable is provided with the suturing staple assembly, and the suturing staple assembly is rotated by controlling the rotation of the pull cable, so as to rotate the spring section of the suturing staple assembly into the human body assembly. In the prior art, the rotation of the pull cable is driven by a sliding ring on the handle, and the pull cable is also moved at the same time, so that the suturing staple assembly simultaneously performs rotation and translation. The rotation and translation of the suturing staple assembly are not separately controlled, and the surgeon cannot accurately control the suturing staple assembly, which is not conducive to accurate and effective surgical operation and has poor user experience. SUMMARY

[0004] In order to solve one of the above technical defects, a tissue suturing system and a method of operating the same are provided in the embodiments of the present application.

[0005] According to a first aspect of the embodiments of the present application, a tissue suturing system is provided, which comprises a suturing staple device and a suturing staple assembly, and the suturing staple device comprises:

[0006] a handle;

[0007] a handle cap, which is rotatably arranged on the handle, and the handle limits the movement of the handle cap along the length direction of the handle;

[0008] an elastic tube, one end of which is connected to the handle cap, and the suturing staple assembly is located at the end of the elastic tube away from the handle;

[0009] a pull cable, which is slidably arranged in the elastic tube, and one end of the pull cable is detachably connected to the suturing staple assembly;

[0010] A sliding ring is slidably arranged on the handle, and the other end of the pull cable is connected with the sliding ring;

[0011] The sliding ring is arranged on the handle, and the sliding ring and the other end of the pull cable are connected.

[0012] The handle is arranged on the handle cap, and the handle cap is arranged on the handle.

[0013] The handle is arranged on the handle cap, and the handle cap is arranged on the handle.

[0014] The handle is arranged on the handle cap, and the handle cap is arranged on the handle.

[0015] The handle is arranged on the handle cap, and the handle cap is arranged on the handle.

[0016] The handle is arranged on the handle cap, and the handle cap is arranged on the handle.

[0017] The handle is arranged on the handle cap, and the handle cap is arranged on the handle.

[0018] The handle is arranged on the handle cap, and the handle cap is arranged on the handle.

[0019] The handle is arranged on the handle cap, and the handle cap is arranged on the handle.

[0020] The handle is arranged on the handle cap, and the handle cap is arranged on the handle.

[0021] The handle is arranged on the handle cap, and the handle cap is arranged on the handle.

[0022] The handle is arranged on the handle cap, and the handle cap is arranged on the handle.

[0023] The handle is arranged on the handle cap, and the handle cap is arranged on the handle.

[0024] The handle is arranged on the handle cap, and the handle cap is arranged on the handle.

[0025] The handle extends into the cap cavity and is in driving engagement with the rotating linkage, the handle and the rotating linkage being rotatable in unison.

[0026] Optionally, the tissue suturing system comprises a staple changing device for clamping the spring section of the staple assembly so that the connecting barrel of the staple assembly is exposed to be sleeved with the releaser at the end of the pull cable, the staple changing device comprising:

[0027] Two clamping members, the two clamping members being rotatably connected, the clamping members being located at both sides of the rotation axis and having clamping ends and pinching ends respectively, the clamping end having a receiving groove and a limiting groove, the limiting groove being located at the end of the clamping end and being in communication with the receiving groove;

[0028] An elastic member, the elastic member being arranged between the two clamping members, under the action of the elastic member, the clamping ends of the two clamping members are in close contact, the receiving grooves of the two clamping ends are in communication to form a receiving cavity, and the limiting grooves of the two clamping ends are in communication to form a limiting cavity;

[0029] In a state where the spring section of the staple assembly is arranged in the receiving cavity, the suture fixing part of the staple assembly is limited in the limiting cavity;

[0030] Under the action of an external force applied to the pinching end, the clamping ends of the two clamping members are separated to release the staple assembly.

[0031] Optionally, the clamping end of the clamping member has a threading groove, in a state where the clamping ends of the two clamping members are in close contact, the threading grooves of the two clamping members are in communication to form a threading cavity;

[0032] In a state where the suture fixing part of the staple assembly is limited in the limiting cavity, the threading cavity is in communication with the suture fixing hole of the suture fixing part.

[0033] Optionally, the tissue suturing system comprises a thread cutting device for cutting the suture;

[0034] An end of the thread cutting device is provided with a thread cutting assembly, the thread cutting assembly comprising:

[0035] A thread fixing mechanism, the thread fixing mechanism comprising a first thread fixing member and a second thread fixing member, the first thread fixing member having a through suture groove, the second thread fixing member being connectable to the first thread fixing member to close the mouth of the suture groove;

[0036] A thread cutting mechanism, the thread cutting mechanism comprising an inner barrel member and an outer barrel member, the inner barrel member being sleevable with the first thread fixing member, the inner barrel member having a first thread cutting mouth and two thread holes, the outer barrel member being sleeved outside the inner barrel member, the outer barrel member having a second thread cutting mouth;

[0037] The driving wire has two filaments, one end of each filament is used to connect the pulling end of the thread cutting device, the other end of each filament is connected, and each filament is arranged through the outer sleeve and the inner sleeve and the two thread holes.

[0038] The thread cutting assembly has a pre-cutting state and a post-cutting state, in the pre-cutting state, the two filaments pass through the thread slot and are limited in the second thread fixing part, and in the post-cutting state, the two filaments are separated from the second thread fixing part and are limited on the two thread holes of the inner sleeve.

[0039] According to a second aspect of the embodiment of the present application, a method for operating a tissue suturing system is provided, comprising:

[0040] Step S100, operating the suturing nail device so that the suturing nail assembly installed at the end of the suturing nail device is located at the target position of the soft tissue;

[0041] Step S200, rotating the handle of the suturing nail device so that the suturing nail assembly is anchored on the soft tissue;

[0042] Step S300, moving the sliding ring to the side away from the handle cap, driving the release device at the end of the pull cable to retract into the elastic tube, so that the suturing nail assembly is separated from the release device;

[0043] Step S400, determining whether the implantation is completed, if the result is yes, entering step S600, otherwise entering step S500;

[0044] Step S500, installing a new suturing nail assembly on the suturing nail device, and entering step S100;

[0045] Step S600, cutting the suture.

[0046] Optionally, step S500 comprises:

[0047] Step S510: moving the sliding ring of the suturing nail device to the side of the handle cap, so that the release device at the end of the pull cable extends out of the elastic tube, and the locking mechanism on the suturing nail device locks the sliding ring, so that the release device remains extended out of the elastic tube;

[0048] Step S520: pinching the nail replacement device containing the suturing nail assembly, and adjusting the position of the nail replacement device so that the suturing nail assembly is connected to the release device;

[0049] Step S530, threading the suture along the threading cavity on the nail replacement device, so that the suture passes through the suture fixing hole of the suturing nail assembly;

[0050] Step S540, pinching the pinching end of the clamping member, so that the pinching ends of the two clamping members are separated to release the suturing nail assembly.

[0051] By adopting the technical scheme, the application has the following beneficial effects:

[0052] In the implementation of the application, the operation of controlling the rotation of the suture needle assembly and the operation of controlling the extension and retraction of the suture needle assembly are independent, which facilitates the surgeon to control them respectively, and is beneficial to improving the operation precision and improving the operation quality. BRIEF DESCRIPTION OF DRAWINGS

[0053] The accompanying drawings, which are included to provide a further understanding of the application and constitute a part of this application, illustrate certain illustrative embodiments of the application and together with the description serve to explain the application. In the drawings:

[0054] Fig. 1 shows a structure view of a first suture needle device in a tissue suturing system provided by an embodiment of the application;

[0055] Fig. 2 is a sectional view of Fig. 1;

[0056] Fig. 3 is another view of Fig. 1;

[0057] Fig. 4 shows a structure schematic view of a sliding ring in Fig. 3;

[0058] Fig. 5 shows a partial structure view of a locking assembly of the first suture needle device in the tissue suturing system provided by an embodiment of the application;

[0059] Fig. 6 shows a sectional view of a sliding ring of a second suture needle device in the tissue suturing system provided by an embodiment of the application in an unlocked state;

[0060] Fig. 7 shows a sectional view of the sliding ring of the second suture needle device in the tissue suturing system provided by an embodiment of the application in a locked state;

[0061] Fig. 8 shows an enlarged view of part A in Fig. 7;

[0062] Fig. 9 shows a structure schematic view of a handle of the second suture needle device in the tissue suturing system provided by an embodiment of the application;

[0063] Fig. 10 shows a partial structure sectional view of the second suture needle device in the tissue suturing system provided by an embodiment of the application;

[0064] Fig. 11 shows a schematic view of a sliding ring of a third suture needle device in the tissue suturing system provided by an embodiment of the application in an unlocked state;

[0065] Fig. 12 shows a schematic view of the sliding ring of the third suture needle device in the tissue suturing system provided by an embodiment of the application in a locked state;

[0066] Fig. 13 shows a perspective structure view of the third suture needle device in the tissue suturing system provided by an embodiment of the application;

[0067] Fig. 14 shows a structural schematic diagram of an inner slider of a third stapling device in the tissue stapling system according to the embodiments of the present application;

[0068] Fig. 15 shows a structural schematic diagram of a fourth stapling device in the tissue stapling system according to the embodiments of the present application;

[0069] Fig. 16 shows a sectional view of a partial structure in Fig. 15;

[0070] Fig. 17 shows a structural schematic diagram of a handle cap of the fourth stapling device in the tissue stapling system according to the embodiments of the present application;

[0071] Fig. 18 shows a structural schematic diagram of an indicating block of the fourth stapling device in the tissue stapling system according to the embodiments of the present application;

[0072] Fig. 19 shows a structural schematic diagram of a rotating linkage of the fourth stapling device in the tissue stapling system according to the embodiments of the present application;

[0073] Fig. 20 shows a structural schematic diagram of a staple changing device according to the embodiments of the present application;

[0074] Fig. 21 shows an enlarged view of B in Fig. 20;

[0075] Fig. 22 shows a structural schematic diagram of a clamping member of the staple changing device according to the embodiments of the present application;

[0076] Fig. 23 shows a state diagram of the staple changing device clamping a stapling device assembly according to the embodiments of the present application;

[0077] Fig. 24 shows an internal state diagram of the staple changing device clamping a stapling device assembly according to the embodiments of the present application;

[0078] Fig. 25 shows a state diagram of the staple changing device clamping a stapling device assembly and preparing to install the assembly in a releaser according to the embodiments of the present application;

[0079] Fig. 26 shows a state diagram of the staple changing device installing a stapling device assembly in a releaser according to the embodiments of the present application;

[0080] Fig. 27 shows a schematic diagram of threading a suture through a stapling device assembly by means of the staple changing device according to the embodiments of the present application;

[0081] Fig. 28 shows an internal state diagram of Fig. 27;

[0082] Fig. 29 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 stapling device assembly;

[0083] Fig. 30 shows a cooperation structure diagram of a first stapling device assembly and a releaser in the tissue stapling system according to the embodiments of the present application;

[0084] Fig. 31 is a sectional view of Fig. 30;

[0085] Fig. 32 shows a structural schematic diagram of a first suture needle assembly in a tissue suturing system according to an embodiment of the present application;

[0086] Fig. 33 shows a structural schematic diagram of a releaser cooperating with the suture needle assembly in Fig. 32;

[0087] Fig. 34 shows a cooperation structural diagram of a second suture needle assembly and a releaser in a tissue suturing system according to an embodiment of the present application;

[0088] Fig. 35 shows a structural schematic diagram of a releaser cooperating with the suture needle assembly in Fig. 34;

[0089] Fig. 36 shows a structural schematic diagram of a second suture needle assembly in a tissue suturing system according to an embodiment of the present application;

[0090] Fig. 37 shows a schematic diagram of a thread cutting device in a tissue suturing system according to an embodiment of the present application;

[0091] Fig. 38 shows a schematic diagram of a suture thread passing through the thread cutting device according to an embodiment of the present application;

[0092] Fig. 39 shows a sectional view of the thread cutting device in a tissue suturing system according to an embodiment of the present application in a pre-cutting state;

[0093] Fig. 40 shows a state diagram of a thread fixing mechanism clamping a suture thread in a thread cutting device in a tissue suturing system according to an embodiment of the present application;

[0094] Fig. 41 shows a state diagram of a driving wire disengaging from the thread fixing mechanism in a thread cutting device in a tissue suturing system according to an embodiment of the present application;

[0095] Fig. 42 shows a post-cutting state diagram of a thread cutting device in a tissue suturing system according to an embodiment of the present application;

[0096] Fig. 43 shows a structural schematic diagram of a limiting member in a thread cutting device in a tissue suturing system according to an embodiment of the present application. DETAILED DESCRIPTION

[0097] In order to make the technical solutions and advantages of the embodiments of the present application clearer, the following further describes exemplary embodiments of the present application with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. 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.

[0098] In the description of the application and embodiments thereof, it is to be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "height" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element 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 application.

[0099] In the present application and embodiments thereof, unless otherwise explicitly specified and limited, the terms "set", "mount", "connect", "connect", "fix" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it 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.

[0100] In the present application and embodiments thereof, unless otherwise explicitly specified and limited, 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.

[0101] Embodiment one

[0102] Referring to FIGS. 1 and 2, the embodiment of the present application provides a tissue suturing system, which comprises a suturing nail device 100 and a suturing nail assembly 300. The suturing nail 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, one end of the elastic tube 2 is connected to the handle cap 7, the suturing nail assembly 300 is located at the 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 detachably connected to the suturing nail assembly 300, 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, the movement of the sliding ring 5 along the handle 1 can drive the suturing nail assembly 300 to move along the extension direction of the elastic tube 2 through the pull cable, and the rotation of the handle 1 around the handle cap 7 can drive the suturing nail assembly 300 to rotate synchronously through the pull cable.

[0103] When the suture assembly 300 needs to be operated to implant into the tissue, the handle 1 is rotated to drive the handle 1 and the sliding ring 5 to rotate synchronously, so that the suture assembly 300 is rotated to be screwed into the human tissue. When the suture assembly 300 needs to be controlled to stretch and retract, the sliding ring 5 is slid, so that the release device 8 at the end of the pull cable 4 is moved to connect with the suture assembly.

[0104] The suture assembly provided by the embodiment of the present application has simple structure and simple operation. The operation of controlling the rotation of the suture assembly 300 and the operation of controlling the stretching and retraction of the suture assembly 300 are independent, which facilitates the surgeon to control respectively, and is beneficial to improve the operation accuracy and improve the operation quality.

[0105] In some possible embodiments, referring to FIGS. 16 and 17, the inner wall of the handle cap 7 is provided with a guide rib 70 extending along the circumference of the handle cap 7. 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 structure. 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 there is 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 7. The handle cap 7 is a plastic structure with a certain deformation ability. Each guide rib 70 is not a closed annular structure. 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.

[0106] In some possible embodiments, referring to FIGS. 3, 10 and 16, the handle 1 includes two spaced apart rod bodies 11 and end head portions 12 fixedly connected to both ends of the two rod bodies 11. A slot 13 is formed between the two rod bodies 11. The 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 13. 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. The handle cap 7 is sleeved on the end head portion 12.

[0107] In some possible embodiments, the suture assembly has a locking mechanism arranged on any one or more of the handle cap 7, the handle 1 and the sliding ring 5. The locking mechanism is used to lock or release the sliding ring 5 from the handle 1.

[0108] The suture device of the present application can lock the sliding ring 5 to the handle 1, so that the pull cable 4 cannot move along the elastic tube 2, the end effector position and state remain fixed, reducing the fatigue of the operator for a long time, and facilitating the operator to perform other related operations. For example, when the suture assembly 300 needs to be replaced, the operator slides the sliding ring 5 so that the release 8 at the end of the pull cable 4 extends out of the elastic tube 2, and then locks the sliding ring 5 to the handle 1 by means of the locking mechanism. The pull cable 4 cannot move along the elastic tube 2, the release 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, the operator can conveniently perform the operation of assembling the new suture assembly 300 to the release 8, the fatigue strength of the operating fingers is reduced, the operation efficiency is improved, and the operation progress is accelerated.

[0109] Embodiment two

[0110] As shown in FIGS. 3-5, the present application provides a structural schematic diagram of a first suture device 100 of a tissue suturing system, which includes a handle 1, an elastic tube 2, a suture 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 assembly is located at the 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 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 to lock the sliding ring 5 to the handle 1 or release the sliding ring 5.

[0111] The locking assembly 6 provided on the suture 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 suture assembly position and state remain fixed, reducing the fatigue of the operator for a long time, and facilitating the operator to perform other related operations.

[0112] When the suture assembly 300 needs to be replaced, the operator slides the sliding ring 5 so that the release at the end of the pull cable extends out of the elastic tube 2, and then locks the sliding ring 5 to the handle 1 by operating the locking assembly 6. The pull cable cannot move along the elastic tube 2, the release 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, the operator can conveniently perform the operation of assembling the new suture assembly 300 to the release, the fatigue strength of the operating fingers is reduced, the operation efficiency is improved, and the operation progress is accelerated.

[0113] In some possible embodiments, the handle 1 comprises two rods 11, the two rods 11 are connected, a through 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 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 rods 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 rods 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 rods 11, and the two rods 11 return to the deformed state. The locking block 61 and the rods 11 have a gap, and under the action of an external force, the locking block 61 can smoothly slide along the rods 11. It should be noted that the first direction and the second direction can be perpendicular.

[0114] In some possible solutions, the peripheral 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 and are smoothly connected to the two length faces 611 by arc faces 613 respectively. In the locked state, the width faces 612 are fitted to the rods 11. The length faces 611 and the width faces 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 without effort.

[0115] In some possible embodiments, the sliding ring 5 has a rotating slot 5113, the locking assembly 6 has a rotating block 62, the rotating block 62 is connected to the locking block 61, and 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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 along the sliding-in groove 5112 to one side of the rotating groove 5113. The sliding-in groove 5112 facilitates the assembly of the locking assembly 6 on the extension shell 511.

[0121] 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.

[0122] 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. When 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.

[0123] Example Three

[0124] Referring to FIGS. 6-10, the second suture needle device 100 of the tissue suturing system according to 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 is provided with a locking matching portion. The sliding ring 5 has a locked state and an unlocked state. In the locked state, the sliding ring 5 slides to one side of the locking portion, the locking matching portion and the locking portion are locked and matched, the sliding of the sliding ring 5 along the handle 1 is limited, and in the unlocked state, the locking matching portion and the locking portion are separated.

[0125] The handle 1 of the suture needle device according to the present application is provided with a locking portion, which 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.

[0126] 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 keep hooking 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 operating efficiency is improved, and the operation progress is accelerated.

[0127] In some possible embodiments, the locking portion comprises an elastic block 111 arranged on the handle 1, the locking matching portion comprises a protrusion 5211 arranged on the sliding ring 5, in the locked state, the protrusion 5211 abuts against the elastic block 111, the elastic block 111 is elastically deformed, the elastic force between the protrusion 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 protrusion 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 protrusion 5211.

[0128] In some possible embodiments, the locking portion comprises 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 protrusion 5211 away from the elastic tube. The clamping block 1111 and the protrusion 5211 are clamped and matched, and are not easily uncamped, so that the sliding ring 5 is stably in the locked state.

[0129] In some possible embodiments, the sliding ring 5 comprises an outer sleeve 51 and an inner sliding block 52, the handle 1 comprises two spaced apart rod bodies 11, 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 51 is slidably sleeved on the outside of 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 51, and the protruding block 5211 is arranged on the inner sliding block 52.

[0130] 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 main body of the rod body 11 are an integral piece. 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.

[0131] Specifically, the slot 112 comprises 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.

[0132] In the locked state, the inner wall of the outer sleeve 51 abuts against one side of the elastic block 111 away from the strip slot 13. And because the outer sleeve 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 and matched with the protruding block 5211, and the locking structure will not easily fail.

[0133] In some possible embodiments, the inner wall of the outer sleeve 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 51. The outer sleeve 51 and the inner sliding block 52 are clamped and limited in cooperation, and the two can only move synchronously along the handle 1.

[0134] The inner sliding block 52 has a main block 521 and an extension 522. The extension 522 is connected to one end of the main block 521, the clamping jaw 5221 is arranged on the end of the extension 522 away from the main block 521, and the positioning block 5212 is arranged on the end of the main block 521 away from the clamping jaw.

[0135] In some possible implementation forms, the inner slider 52 comprises two half blocks, the protrusion 5211 comprises two half protrusions arranged on the two half blocks respectively, the two half blocks are detachably connected, and the two half protrusions are spliced to form the protrusion 5211 when 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 hole, the plug shaft is inserted into the plug hole, and the two are connected to form an integrated structure and move synchronously along the handle 1.

[0136] Embodiment four

[0137] Referring to Figs. 11 to 14, the third suture needle device of the tissue suturing system provided in 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 handle cap 7 having a locking portion at one end, and the elastic tube is connected to the handle cap 7 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, 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 slides to one side of the handle cap 7, and the locking matching portion and the locking portion are locked and matched.

[0138] 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 for a long time, and the operator can conveniently perform other related operations.

[0139] When the suture needle assembly 300 needs to be replaced, the operator slides the sliding ring 5 so that the releaser 8 at the end of the pull cable extends 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, 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.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] 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 cannot be 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.

[0145] 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.

[0146] 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.

[0147] 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.

[0148] 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.

[0149] Example Five

[0150] Referring to FIGS. 15-19, 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.

[0151] In some possible embodiments, 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 rod. The indicating block 732 can be translated along the length direction of the rotary linkage 731 by rotating the rotary linkage 731 driven by the handle 1.

[0152] 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.

[0153] 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.

[0154] 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.

[0155] In some possible embodiments, the end of the handle 1 located at one end of the mouth of the limiting slot 121 is provided with an outwardly expanding inclined surface, and / or the end of the linkage shafts 7313 away from the rotating shafts 7312 is provided with a narrowing inclined surface, so that the linkage shafts 7313 can be smoothly inserted into the limiting slot 1121 of the handle 1.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] In some possible embodiments, the depth-controllable staple device includes a pull rope 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 rope 4 is arranged through the through slot, and the pull rope 4 is connected to the sliding ring 5. In the process of sliding the sliding ring 5 along the handle 1, the pull rope 4 can slide along the through slot of the rotating linkage 731. In the process of 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 rope 4 to rotate synchronously with the handle.

[0161] Embodiment six

[0162] 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. 2, 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. 5 and 10, 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.

[0163] In the pre-cutting state, referring to FIG. 38 and FIG. 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 it is necessary to cut the suture 500, 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. 4. Continue to pull the driving wire 440, which will be disengaged from the second wire fixing member and limited on the two wire holes 43131 of the inner cylinder member 431, because the two filament ends of the driving wire 440 are fixedly connected, so they will not easily disengage from the inner cylinder member 431. Under the driving action of the driving wire 440, referring to FIG. 42, 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 off the risk, 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 fixedly connected, and the inner cylinder member 431 and the outer cylinder member 432 are clearance fitted, after cutting off the suture 500, the operator removes the elastic tube 2 from the forceps channel of the endoscope to complete the operation.

[0164] The inner cylinder member 431 of the wire 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 disengage from the inner cylinder member 431, which is highly reliable and has good product quality stability.

[0165] 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 disengaging from 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.

[0166] With reference to FIG. 39, the simple body includes a cylinder 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 cylinder wall 4311 can be sleeved on the first wire fixing part 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 part 420, the limiting part 4313 can be moved, so that the limiting part 4313 can be attached to the end plate 4312, thereby enabling the inner cylinder part 431 to be continuously pulled.

[0167] In some possible embodiments, with reference to FIG. 43, the limiting part 4313 is in the shape of a sheet, and a wire hole 43131 passes through the limiting part 4313 in the thickness direction of the limiting part 4313.

[0168] The limiting part 4313 can be a circular sheet body. The outer diameter of the limiting part 4313 is smaller than the inner diameter of the cylinder wall 4311 and larger than the through hole 43121 on the end plate 4312. The limiting part 4313 will not be separated from the cylinder body by the through hole 43121.

[0169] The two filaments 441 are an integral part. The filaments 441 pass through the two wire holes 43131 in sequence to form a double-wire structure.

[0170] The second wire fixing part 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.

[0171] In some possible embodiments, the second wire fixing part 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 part 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.

[0172] The wire cutting assembly 400 includes a plug 423 which is detachably connected to the second wire fixing part 420 to cover or open the slot of the containing groove 422.

[0173] The application also provides a line cutting device, which comprises a handle 1, an elastic tube 2 and the line cutting assembly 400. One end of the elastic tube 2 is connected to the handle 1, and the outer cylinder 432 of the line cutting assembly 400 is connected to the other end of the elastic tube 2. A pull cable is slidably arranged in the elastic tube 2, and one end of the pull cable is drivingly connected to the driving wire 440. A sliding ring 5 is slidably arranged on the handle 1, and the other end of the pull cable 4 is drivingly connected to the sliding ring 5. The operator can move the sliding ring 5 along the handle 1 by sliding the sliding ring 5, so as to drive the driving wire 440 to move and perform a cutting action.

[0174] Embodiment seven

[0175] Referring to FIGS. 20-36, the tissue suturing system comprises a suturing needle device 100 and a needle changing device 200. The suturing needle device 100 has an elastic tube 2 and a releaser 8 slidably arranged at the end of the elastic tube 2. The releaser 8 is connected to the end of the pull cable 4 of the suturing needle device. The needle changing device 200 is used to clamp the spring section 310 of the suturing needle assembly 300, so that the connecting cylinder 320 of the suturing needle assembly 300 is exposed to be sleeved on the releaser 8. Referring to FIGS. 30-33, the inner wall of the connecting cylinder 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 cylinder 320 is sleeved on the releaser 8, the inner protruding rib 321 and the outer protruding rib 81 are clamped and matched, so that the connecting cylinder 320 cannot be easily separated from the releaser 8.

[0176] Referring to FIGS. 34-36, the end of the releaser 8 can be slotted to form two elastic sections 82, and the two elastic sections 82 are both provided with the outer protruding rib 81. By arranging the two elastic sections 82, the releaser 8 can be clamped and matched with the inner protruding rib 321 on the inner wall of the connecting cylinder 320 and the inner protruding rib 321 on the inner wall of the connecting cylinder 320 after being inserted into the connecting cylinder 320, and cannot be easily clamped and matched.

[0177] The releaser 8 can be provided with a synchronous rib 83, and the connecting cylinder 320 can be provided with a synchronous groove 340. The synchronous rib 83 can be inserted into the synchronous groove 340, so that the releaser 8 and the suturing needle assembly can be synchronously rotated.

[0178] The nail changing device 200 comprises an elastic member 230 and two clamping members 210. The two clamping members 210 are rotatably connected, and the clamping members 210 are located on both sides of the rotation axis and are respectively a clamping end and a pinching end. The clamping end is provided with a containing 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 is in communication with the containing groove 211a. The elastic member 230 is arranged between the two clamping members 210. Under the action of the elastic member 230, the clamping ends of the two clamping members 210 are in close contact, the containing grooves 211a of the two clamping ends are in communication to form a containing 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 a state where the spring section 310 of the suture needle assembly 300 is arranged in the containing cavity 211, the suture fixing portion 330 of the suture needle assembly 300 is limited in the limiting cavity 212, and the threading cavity 213 is in communication with the suture fixing hole 331 of the suture fixing portion 330. Under the action of an external force applied to the pinching end, the clamping ends of the two clamping members 210 are separated to release the suture needle assembly 300.

[0179] The nail changing device 200 provided by the application is convenient to use, can clamp a suture needle assembly 300 with a small size, and has a size larger than that of the suture needle assembly, so that a surgeon can conveniently pinch and operate. Compared with manual nail changing, the nail changing device 200 can obviously improve the operation efficiency and reduce the workload and operation difficulty of the surgeon. The nail changing device 200 can conveniently pass a suture needle, and the suture needle of the tissue suturing system is not limited in number and has higher flexibility.

[0180] In some possible embodiments, as shown in FIG. 21, the limiting cavity 212 comprises two first limiting surfaces 2121 and a second limiting surface 2122. The two first limiting surfaces 2121 extend along the length direction of the containing 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 is connected perpendicularly to the two first limiting surfaces 2121. In a state where the suture fixing portion 330 is limited in the limiting cavity 212, the two first limiting surfaces 2121 are limited on both sides of the suture fixing portion 330 along the circumferential direction of the nail changing device 200, so as to limit the rotation of the suture fixing portion 330. The second limiting surface 2122 is limited on one side of the suture fixing portion 330 close to the pinching end, so as to limit the movement of the suture fixing portion 330 to the side of the pinching end.

[0181] In some possible implementation, referring to FIG. 21, the threading cavity 213 comprises a first opening 2131 on the outer surface of the two clamping members 210 and a second opening 2132 on the second limiting surface 2122 of the limiting cavity 212. When the suture fixing part 330 of the stapling nail 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 500 can slide along the threading cavity 213 to pass through the suture fixing hole 331 of the stapling nail assembly 300, which is convenient to operate.

[0182] 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, which can facilitate the end of the suture 500 to be smoothly inserted into the threading cavity 213. The second opening 2132 has the smallest area, which can smoothly communicate with the suture fixing hole 331, so that the end of the suture 500 can be smoothly inserted into the suture fixing hole 331.

[0183] In some possible implementation, referring to FIG. 22, the nail changing device 200 comprises a rotating shaft 220, the clamping member 210 has a hinged seat 214, the rotating shaft 220 is respectively arranged in the hinged seat 214 of the two clamping members 210, 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 from each other. The pinch end of the clamping member 210 is normally closed to clamp the stapling nail assembly 300.

[0184] Embodiment Eight

[0185] The embodiment of the present application provides an operation method of a tissue stapling system, which comprises the following steps:

[0186] In step S100, the stapling nail device is operated, so that the stapling nail assembly 300 installed at the end of the stapling nail device is located at the target position of the soft tissue.

[0187] In this step, the elastic tube 2 of the stapling nail device is slid along the forceps channel of the endoscope, so that the stapling nail assembly at the end is moved to the target position of the tissue.

[0188] In step S200, the handle 1 of the stapling nail device is rotated, so that the stapling nail assembly 300 is anchored on the soft tissue.

[0189] When the handle 1 is rotated, the slip ring 5 and the pull cable 4 are synchronously rotated, so as to drive the stapling nail assembly to rotate, and the stapling nail assembly is rotated into the tissue.

[0190] In this step, the operator can pay attention to the indication block 732, according to the distance or the position of the indication block 732 moving, the depth of the suture staple assembly 300 implanted in the tissue can be determined, when the depth of the suture staple assembly implanted in the tissue is sufficient, the operator can stop rotating the handle 1.

[0191] Step S300, move the sliding ring 5 to the side away from the handle cap 7, drive the release 8 at the end of the pull cable 4 to retract into the elastic tube 2, so that the suture staple assembly 300 is separated from the release 8;

[0192] In this step, the outer diameter of the suture staple assembly 300 is larger than the elastic tube 2, when the release 8 is retracted into the elastic tube 2, the suture staple assembly 300 will naturally fall off and separate from the release 8.

[0193] Step S400, determine whether the implantation is finished, if the result is yes, go to step S600, otherwise go to step S500;

[0194] Step S500, install a new suture staple assembly 300 on the suture staple device, and go to step S100;

[0195] Step S600, cut the suture 500.

[0196] Step S500 includes:

[0197] Step s510: move the sliding ring 5 of the suture 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 suture staple device locks the sliding ring 5, so that the release 8 remains extended out of the elastic tube 2;

[0198] In this step, by sliding the sliding ring 5 to one side of the elastic tube 2, the pull cable 4 can push the release 8 to extend out of the elastic tube 2, which facilitates subsequent staple replacement operation. 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 by the locking mechanism at this time, and the release 8 remains extended out of the elastic tube 2, so 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 staple assembly 300 on the release 8, the fatigue strength of the operating fingers is reduced, the operation efficiency is improved, and the operation progress is accelerated.

[0199] Step S520: pinch the staple replacement device 200 containing the suture staple assembly 300, and adjust the position of the staple replacement device 200 so that the suture staple assembly 300 is connected to the release 8;

[0200] In this step, the pinch end of the two clamping pieces 210 of the staple replacement device 200 is pinched, so that the clamping pieces 210 keep clamping the suture staple assembly 300, preventing the suture staple assembly 300 from being unstable in position on the staple replacement device 200 and easily shaking during the installation of the suture staple assembly 300.

[0201] Step S530, the suture thread is threaded along the threading cavity 213 on the staple changing device 200, so that the suture thread penetrates through the suture needle assembly 300 fixing hole 331 of the suture thread 500;

[0202] Step S540, pinch the pinch end of the clamping member 210, so that the pinch ends of the two clamping members 210 are separated to release the suture needle assembly 300, and the installation of the suture needle assembly is completed.

[0203] In step S600, before cutting the suture thread 500, the first wire fixing member 410 and the second wire fixing member 420 are separated, and the guide tube is sequentially threaded through the mouth of the suture thread 500 groove 411, the first cutting thread port 43111 and the second cutting thread port 4321, and the suture thread 500 is threaded on the guide tube, and finally the guide tube is taken out, and the suture thread 500 is sequentially threaded through the mouth of the suture thread 500 groove 411, the first cutting thread port 43111 and the second cutting thread port 4321. When it is necessary to cut the suture thread 500, 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 thread 500 is clamped and fixed. Continue to pull the driving wire 440, the driving wire 440 will be disconnected from the second wire fixing member, and limited on the two wire holes 43131 of the inner cylinder member 431, so that the two upper wire ends of the driving wire 440 are connected and fixed, so as not to easily separate 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 thread port 43111 and the second cutting thread port 4321 cooperate to cut off the risk. At this time, the wire fixing mechanism is left in the human body with the suture thread 500. The outer cylinder member 432 and the elastic tube 2 of the cutting thread assembly 400 are connected and fixed, and the inner cylinder member 431 and the outer cylinder member 432 are gap fit. After cutting the suture thread 500, the operator takes out the elastic tube 2 from the forceps channel of the endoscope to complete the operation.

[0204] The above disclosure provides many different implementations or examples for implementing the different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described in the above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and in itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0205] While the preferred embodiments of the application have been described, additional variations and modifications can be made to these embodiments by those skilled in the art once they have the benefit of the present disclosure without departing from the spirit and scope of the application. Accordingly, it is intended that such additions and modifications be included within the scope of the application. It is the following claims, including any amendments thereto, which define the scope of the application.

[0206] Obviously, numerous 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

A tissue stapling system including a stapling instrument and a staple assembly, characterized in that, The suture needle device comprises: a handle; a handle cap rotatably arranged on the handle, the handle limiting the handle cap from moving along the length direction of the handle; an elastic tube, one end of the elastic tube being connected to the handle cap, the suture needle assembly being located at the end of the elastic tube away from the handle; a pull cable, the pull cable being slidably arranged in the elastic tube, one end of the pull cable being detachably connected to the suture needle assembly; a sliding ring, the sliding ring being slidably arranged on the handle, the other end of the pull cable being connected to the sliding ring; wherein the sliding ring moving along the handle can drive the suture needle assembly to move along the extension direction of the elastic tube through the pull cable, the handle rotating around the handle cap can drive the suture needle assembly to synchronously rotate through the pull cable. The tissue stapling system according to claim 1, wherein An inner wall of the handle cap is provided with a guide rib, the guide rib extending along the circumference of the handle cap, one end of the handle is provided with an annular groove, the annular groove extending along the circumference of the handle; in the state that the handle cap is sleeved on the handle, the guide rib is embedded in the annular groove. The tissue stapling system according to claim 2, wherein The handle comprises two rod bodies arranged at intervals and end head portions located at two ends of the two rod bodies and fixedly connected to the two rod bodies respectively; a strip groove is formed between the two rod bodies; the sliding ring is slidably connected to the two rod bodies, the sliding ring having an inner sliding block located in the strip groove, the pull cable extending into the strip groove and being connected to the inner sliding block; the annular groove is arranged on one of the end head portions, and the handle cap is sleeved on the end head portion. The tissue stapling system according to claim 1, wherein The suture needle device has a locking mechanism, the locking mechanism being arranged on any one or more of the handle cap, the handle and the sliding ring; the locking mechanism being used for locking the sliding ring on the handle or releasing the sliding ring. The tissue stapling system according to claim 1, wherein A rotation driving assembly is arranged on the handle cap, the rotation driving assembly being in transmission connection with the handle, the rotation driving assembly comprising an indicating block; in the state that the handle rotates around the handle cap, the handle can drive the indicating block of the rotation driving assembly to move along the length direction of the handle. The tissue stapling system according to claim 5, wherein The handle cap has a cap cavity and a guide groove communicating with the cap cavity; the rotation driving assembly comprises a rotation linkage, the rotation linkage being rotatably arranged in the cap cavity, the rotation linkage having an external thread, the indicating block being slidably arranged in the guide groove, and the indicating block being in threaded connection with the rotation linkage; one end of the handle extends into the cap cavity and is in transmission cooperation with the rotation linkage, and the handle and the rotation linkage can synchronously rotate. The tissue stapling system according to claim 1, wherein The suture needle device comprises a needle changing device, the needle changing device being used for clamping the spring section of the suture needle assembly so that the connecting barrel of the suture needle assembly is exposed to be sleeved on the releaser at the end of the pull cable, the needle changing device comprising: two clamping members, the two clamping members being rotatably connected, the clamping members being located at two sides of a rotation axis and being respectively a clamping end and a pinching end, the clamping end having a containing groove and a limiting groove, the limiting groove being located at the end of the clamping end and being in communication with the containing groove; The elastic member is arranged between the two clamping members, and the clamping ends of the two clamping members are in close contact under the action of the elastic member, the accommodating grooves of the two clamping ends are in communication to form an accommodating cavity, and the limiting grooves of the two clamping ends are in communication to form a limiting cavity; In a state where the spring section of the stapling needle assembly is arranged in the accommodating cavity, the suture fixing part of the stapling needle assembly is limited in the limiting cavity; Under the action of an external force applied to the clamping end, the clamping ends of the two clamping members are separated to release the stapling needle assembly. The tissue stapling system according to claim 7, wherein The clamping end of the clamping member has a threading groove, and the threading grooves of the two clamping ends are in communication to form a threading cavity in a state where the clamping ends of the two clamping members are in close contact; In a state where the suture fixing part of the stapling needle assembly is limited in the limiting cavity, the threading cavity is in communication with the suture fixing hole of the suture fixing part. The tissue suturing system according to any one of claims 1-8, characterized in that The suture cutting device is provided with a suture cutting assembly at the end portion of the suture cutting device, and the suture cutting assembly comprises: The suture fixing mechanism comprises a first suture fixing member and a second suture fixing member, the first suture fixing member has a through suture groove, and the second suture fixing member is connected to the first suture fixing member to close the mouth of the suture groove; The suture cutting mechanism comprises an inner cylinder member and an outer cylinder member, the inner cylinder member is sleeved on the first suture fixing member, the inner cylinder member has a first suture cutting port and two wire holes, and the outer cylinder member is sleeved outside the inner cylinder member and has a second suture cutting port; The driving wire has two long filaments, one end of each long filament is used for connecting the pulling end of the suture cutting device, the other end of each long filament is connected, and the two long filaments are arranged through the outer cylinder member and the inner cylinder member and the two wire holes. The suture cutting assembly has a pre-cutting state and a post-cutting state, in the pre-cutting state, the two long filaments pass through the suture groove and are limited in the second suture fixing member, and in the post-cutting state, the two long filaments are separated from the second suture fixing member and are limited in the two wire holes of the inner cylinder member. The steps S100, S200, S300, S400, S500 and S600 are as follows: Method of operating a tissue stapling system according to any of claims 1-9, characterized in that Step S100: operating the stapling needle device so that the stapling needle assembly installed at the end portion of the stapling needle device is located at a target position of soft tissue; Step S200: rotating the handle of the stapling needle device so that the stapling needle assembly is anchored on the soft tissue; Step S300: moving the sliding ring to the side away from the handle cap, driving the release device at the end portion of the pull cable to retract into the elastic tube, so that the stapling needle assembly is separated from the release device; Step S400: determining whether the implanting is completed, if the result is yes, entering step S600, otherwise entering step S500; Step S500: installing a new stapling needle assembly on the stapling needle device, and entering step S100; Step S600: cutting the suture. Step S500 comprises: The operating method according to claim 10, characterized in that Step S510: moving the sliding ring of the stapling needle device to the side of the handle cap, so that the release device at the end portion of the pull cable extends out of the elastic tube, and the locking mechanism on the stapling needle device locks the sliding ring, so that the release device remains extended out of the elastic tube; Step S520: pinching the needle changing device containing the stapling needle assembly, and adjusting the position of the needle changing device so that the stapling needle assembly is connected to the release device; ​ Step S530, pass the suture thread along the threading cavity on the staple changing device, so that the suture thread penetrates through the suture thread fixing hole of the suture staple assembly; Step S540, pinch the pinch end of the clamping member, so that the pinch ends of the two clamping members are separated to release the suture staple assembly.

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