Stapler, treatment device with stapler, and treatment apparatus

Abstract

The utility model relates to a medical instrument, in particular to a stitching instrument, a treatment device with the stitching instrument and treatment equipment with the stitching instrument. The stapler includes: a main housing; the suture needle is slidably arranged on the main shell, one end of the suture needle is connected with a suture line, and the other end of the suture needle is a tip; the needle inserting assembly is arranged on the main shell and forms a separable clamping relation with the suture needle so as to control the suture needle to advance; wherein the suture needle is provided with a clamping part, the clamping part is used for being clamped with the needle inserting assembly, and the clamping part inclines towards the tail of the suture needle. By means of the arrangement, barbs are formed on the clamping parts 131, the function of limiting back-off of the suture needle during suturing can be achieved, compared with a needle-back-preventing assembly arranged between the suture needle and the main shell, the back-off-preventing design can reduce the number of parts of the suturing instrument, cost is saved, and the assembling efficiency is improved. And the resistance in the moving process of the suture needle can be reduced.

Description

Technical Field

[0001] The present application relates to a medical device, and more particularly, to a stapler, a treatment device having the stapler, and a treatment apparatus. Background Art

[0002] Minimally invasive techniques are the trend of modern surgical development, but they still leave scars on the patient's body surface. Therefore, scarless surgery has emerged. Since there are no scars on the body surface, the surgery must be completed by a flexible endoscope through a natural cavity. Therefore, natural orifice transluminal endoscopic surgery (NOTES) has become a research hotspot for scarless surgery and is also the third-generation surgical method after open surgery and laparoscopic surgery. Scarless surgery on the body surface has less physiological trauma, less psychological trauma, and correspondingly fewer intraoperative and postoperative complications. In addition, NOTES does not require general anesthesia, uses less anesthetic drugs, reduces the depth of anesthesia, and some patients are in a waking state, greatly reducing the anesthesia risk. Moreover, the postoperative recovery is faster, the rehabilitation time is significantly shortened, and the occurrence of postoperative complications is reduced; it is more beneficial for extremely weak patients and patients with a high surgical risk.

[0003] The Overstitch stapler (https: / / apolloendo.com / physicians / physicians-overstitch / overstitch / ) of Apollo Endosurgery, Inc. in the United States, and the endoscopic helical tacking system (Endoscopic HeliX Tacking System; https: / / www.x-tack.com / ) recently launched by the company. The former partly solves the problem of closing internal tissues through natural orifices. Although the latter can suture larger wounds or other target suture tissues, the system not only has more accessories and complicated operations, but also the suturing depends on at least three metal helical tacks, and the knotting still depends on clips. The hard and sharp helical tacks that rotate through the tissue for suturing remain in the body, making it difficult to eliminate the possibility of secondary injuries to the digestive system, and even the urinary and reproductive systems, such as perforation, intestinal leakage, and adhesion. Coupled with the accumulation of hard clips for knotting, it is more difficult for the peristalsis of the digestive tract and the movement of the abdomen not to cause injuries. When the screw penetrates into the tissue and hooks up the tissue, it is extremely difficult to accurately penetrate into the tissue and hook up the tissue without penetrating the tissue for the separated tissue that does not penetrate the full layer; for the separated tissue that penetrates the full layer, due to the lack of fixation or support at the separated edge, it is very difficult to avoid aggravating the separation of the separated tissue and the inclination of the screw when penetrating into the tissue, resulting in the inability to penetrate vertically or the penetration being deviated.

[0004] Chinese invention patent application 202310000329.7 (filing date January 3, 2023) discloses a stapler, a therapeutic device having a stapler, and a therapeutic device. The patent realizes the suturing and knotting of soft tissue in the body by controlling the needle insertion assembly and the anti-retraction needle assembly. However, in this application, due to the provision of the anti-retraction needle assembly, the number of stapler parts increases and the size increases, which will affect the assembly efficiency and production cost. In addition, as the number of parts increases, the resistance during the movement of the suture needle will also increase, which will affect the operator's operation. Utility Model Content

[0005] In order to overcome at least one deficiency in the prior art, the present application provides a stapler, a treatment device having the stapler, and a treatment equipment.

[0006] In a first aspect, an embodiment of the present application provides a stapler, the stapler comprising:

[0007] main housing;

[0008] A suturing needle is slidably disposed on the main housing, one end of the suturing needle is connected to a suture thread, and the other end is a sharp tip;

[0009] The needle insertion assembly is disposed on the main housing and forms a separable engagement relationship with the suture needle to control the advancement of the suture needle;

[0010] The suture needle is provided with a clamping portion, which is used to clamp with the needle insertion assembly, and the clamping portion is inclined toward the tail of the suture needle to form a barb.

[0011] According to one embodiment of the present application, the engaging portion has a first surface facing the tail of the suture needle and a second surface away from the tail of the suture needle, and both the first surface and the second surface are inclined toward the tail of the suture needle.

[0012] According to an embodiment of the present application, the inclination angle of the first surface is not greater than 80°; and / or the inclination angle of the second surface is not less than 10°.

[0013] According to an embodiment of the present application, the engaging portion is formed by a groove arranged on the surface of the suture needle.

[0014] According to an embodiment of the present application, there are multiple engaging parts, and the multiple engaging parts are distributed at intervals along the axial direction of the suture needle, and the interval between two adjacent engaging parts is no more than 60°.

[0015] According to an embodiment of the present application, the engaging portion is located on the outer peripheral surface of the suture needle.

[0016] According to an embodiment of the present application, the main housing includes a first housing, a second housing and a third housing, the first housing is connected to the second housing, and the third housing is rotatably disposed on the first housing and is used to be sleeved on the front end of the endoscope;

[0017] Among them, a first housing is provided with a first gear, a third housing is provided with a second gear, the first gear and the second gear are meshed with each other, and one of the first gear and the second gear can be rotated by a hook gripper penetrating through the third housing to drive the relative rotation of the first housing and the third housing.

[0018] According to an embodiment of the present application, the first gear is rotatable relative to the first housing, the second gear is fixed relative to the third housing, and the first gear can be rotated by a hook gripper penetrating through the third housing to drive the relative rotation of the first housing and the third housing.

[0019] In a second aspect, an embodiment of the present application further provides a treatment device for use in conjunction with an endoscope. The treatment device includes:

[0020] A stapler fixed to the distal end of the endoscope. The stapler includes:

[0021] A main housing;

[0022] A suture needle slidably disposed in the main housing. One end of the suture needle is connected with a suture thread, and the other end is a tip;

[0023] A needle driving assembly disposed on the main housing and forming a separable engaging relationship with the suture needle to control the advancement of the suture needle;

[0024] Among them, the suture needle is provided with an engaging portion for engaging with the needle driving assembly, and the engaging portion is inclined towards the tail of the suture needle;

[0025] A control handle fixed to the operating end of the endoscope. The control handle is connected to the needle driving assembly of the stapler, and the control handle controls the needle driving assembly to control the advancement of the suture needle.

[0026] In a third aspect, an embodiment of the present application further provides a treatment device, including:

[0027] An endoscope;

[0028] A stapler fixed to the distal end of the endoscope. The stapler includes:

[0029] A main housing;

[0030] A suture needle slidably disposed in the main housing. One end of the suture needle is connected with a suture thread, and the other end is a tip;

[0031] A needle driving assembly disposed on the main housing and forming a separable engaging relationship with the suture needle to control the advancement of the suture needle;

[0032] Among them, the suture needle is provided with an engaging portion for engaging with the needle driving assembly, and the engaging portion is inclined towards the tail of the suture needle;

[0033] The operating handle is fixed to the operating end of the endoscope. The operating handle is connected to the needle inserting assembly of the stapler, and the operating handle controls the needle inserting assembly to control the advancement of the suture needle.

[0034] The above technical solution of the present application has the following beneficial technical effects:

[0035] In the stapler, the treatment device with the stapler, and the treatment equipment according to the embodiments of the present application, the engaging portion inclines towards the tail of the suture needle. With such a setting, the engaging portion 131 forms barbs, which can play a role in restricting the backward movement of the suture needle during suturing. Compared with setting an anti-retraction needle assembly between the suture needle and the main housing, this anti-backward movement design can reduce the number of parts of the stapler, which is beneficial to cost saving and assembly efficiency improvement. In addition, with the reduction of the number of parts, the resistance during the movement of the suture needle will also decrease, thereby facilitating the operation of the operator.

[0036] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specific preferred embodiments are given, and detailed descriptions are made in conjunction with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 Shows a schematic structural diagram of a stapler provided by an embodiment of the present application;

[0038] Figure 2 and Figure 3 Shows Figure 1 A schematic structural diagram from another perspective;

[0039] Figure 4 Shows Figure 1 An exploded view of;

[0040] Figure 5 Shows Figure 1 An assembly schematic diagram of the suture needle and the needle inserting assembly in;

[0041] Figure 6 Shows Figure 1 A schematic structural diagram of the suture needle in;

[0042] Figure 7 Shows Figure 6 A partial enlarged view of;

[0043] Figures 8 to 15 Shows Figure 1 Schematic diagrams of different states of the suture needle and the needle inserting assembly during the actuation process in;

[0044] Figure 16 Shows a schematic structural diagram of another second housing provided by an embodiment of the present application;

[0045] Figure 17Shows a schematic structural diagram of another second housing provided by an embodiment of the present application;

[0046] Figure 18 Shows a schematic structural diagram of another suture needle provided by an embodiment of the present application;

[0047] Figure 19 Shows Figure 18 The schematic structural diagram from another perspective;

[0048] Figure 20 Shows a schematic structural diagram of another stapler provided by an embodiment of the present application;

[0049] Figure 21 And Figure 22 Shows Figure 20 The schematic structural diagram from another perspective;

[0050] Figure 23 Shows Figure 20 The assembly schematic diagram of the first gear and the second gear in ;

[0051] Figure 24 Shows Figure 20 The cooperation schematic diagram of the first gear and the hook forceps in ;

[0052] Figure 25 Shows Figure 24 The schematic diagram after the first gear rotates clockwise in ;

[0053] Figure 26 Shows a schematic structural diagram of a control handle provided by an embodiment of the present application;

[0054] Figures 27 to 29 Shows Figure 26 The schematic structural diagram from another perspective;

[0055] Figure 30 Shows Figure 26 The exploded view of ;

[0056] Figure 31 Shows Figure 28 The assembly schematic diagram of the operating rope pulley and the front housing of the handle in ;

[0057] Figure 32 Shows Figure 28 The structural schematic diagram in which the operating rope is connected to the operating rope pulley through an arc pin and a pin spring in ;

[0058] Figure 33 Shows Figure 28 The assembly schematic diagram of the operating rope, the arc pin and the pin spring in ;

[0059] Figure 34 Shows Figure 28Assembly schematic diagram of the middle pull rod, the handle rear shell, the clutch disc and the operating rope pulley;

[0060] Figure 35 Shows Figure 34 Schematic diagram of the structure from another perspective;

[0061] Figure 36 Shows Figure 34 Exploded view of;

[0062] Figure 37 Shows Figure 28 Assembly schematic diagram of the middle pull rod, the handle front shell and the clutch disc;

[0063] Figure 38 Shows Figure 37 Schematic diagram of the structure from another perspective;

[0064] Figure 39 Shows Figure 26 Schematic diagram of the structure of a fixing structure of a control handle;

[0065] Figure 40 Shows Figure 26 Schematic diagram of the structure of another fixing structure of a control handle;

[0066] Figure 41 Shows Figure 26 Schematic diagram of the structure of yet another fixing structure of a control handle;

[0067] Figure 42 Shows Figure 26 Schematic diagram of the structure of still another fixing structure of a control handle. Detailed implementation manners

[0068] This embodiment provides a stapler, a control handle cooperating with the stapler, a treatment device composed of the stapler and the control handle, and a treatment equipment composed of the treatment device and an endoscope cooperating with it. The stapler provided in this embodiment can not only be used in cooperation with an endoscope, but also be used in cooperation with other devices capable of realizing steering guidance.

[0069] Embodiment 1

[0070] As Figures 1 to 15As shown, the stapler 1 provided in this embodiment is used to pierce and suture tissues for performing surgical operations inside the body. The stapler 1 includes a main housing 11, a suture needle 13, and a needle advancing assembly 12. The main housing 11 is used to connect to the distal end of an endoscope, and the main housing 11 is used to mount the suture needle 13 and the needle advancing assembly 12. The suture needle 13 is slidably disposed in the main housing 11. The needle advancing assembly 12 is disposed on the main housing 11 and forms a separable engagement relationship with the suture needle 13 to control the advancement of the suture needle 13. Specifically, the needle advancing assembly 12 includes a driving member, a reset member, and an engaging member 123. The engaging member 123 is used to form a separable engagement relationship with the suture needle 13. The driving member is used to act on the engaged engaging member 123 and the suture needle 13, so that the engaging member 123 drives the suture needle 13 to advance, and at the same time causes the reset member to deform. When the driving member is released, the engagement relationship between the engaging member 123 and the suture needle 13 is released, and the reset member drives the engaging member 123 to reset. During the next needle advancement, the driving member acts on the engaged engaging member 123 and the suture needle 13 again, so that the engaging member 123 drives the suture needle 13 to advance, and the cycle is repeated to achieve continuous suturing.

[0071] In some examples, the main housing 11 includes a first housing 111 and a second housing 112. Among them, the first housing 111 is used to connect to the endoscope. The second housing 112 is connected to the first housing 111, and the second housing 112 is used to mount the suture needle 13 and the needle advancing assembly 12.

[0072] In some examples, the first housing 111 has a connecting handle 1111 extending along its axial direction, and the first housing 111 is connected to the second housing 112 through the connecting handle 1111. When specifically arranged, the connecting handle 1111 is provided with a connecting groove, and a connecting protrusion can be provided on the second housing 112. The shape and size of the connecting protrusion match the shape and size of the connecting groove, and the connecting protrusion can be inserted into the connecting groove to connect the connecting handle 1111 and the second housing 112 together. However, this embodiment does not make any limitation in this regard.

[0073] In some examples, in order to firmly connect the first housing 111 and the second housing 112, the connection seam formed by connecting the connecting groove and the connecting protrusion can be welded together by laser welding. However, this embodiment does not make any limitation in this regard. In other embodiments, the main housing 11 may not be divided into two parts, namely the first housing 111 and the second housing 112. That is, the main housing 11 can be formed by an integral molding method. The integrally formed main housing 11 makes the connection between the first housing 111 and the second housing 112 have a smooth transition, and there are no sharp corners at the connection, thereby greatly reducing the damage caused by the stapler 1 touching the internal tissues.

[0074] In some examples, the outer surfaces of the first housing 111 and the second housing 112 are both smooth surfaces without edges and corners. Such a setting enables the stapler 1 to minimally affect the field of view of the tip of the endoscope, facilitating suturing operations inside the body and reducing damage caused by touching the internal tissues. Additionally, with an arc-shaped outer surface, it also avoids damage to internal tissues caused by the edges of the housing during operation. However, this embodiment does not make any limitations in this regard.

[0075] In some examples, there is a channel in the middle of the first housing 111. When used in conjunction with an endoscope, this channel enables the stapler 1 to be sleeved on the tip of the endoscope. However, this embodiment does not make any limitations in this regard. In other embodiments, the first housing 111 may not have a channel, but instead, through other structures such as a fixing strap, the stapler 1 can be fixed to the tip of the endoscope.

[0076] As Figure 4 and Figure 16 shown, in some examples, a first sliding groove 1121 and a second sliding groove 1122 are provided in the second housing 112. The second housing 112 is an arc-shaped structure, and both the first sliding groove 1121 and the second sliding groove 1122 are arranged along the arc direction of the second housing 112. When specifically arranged, the suture needle 13 is arranged in the first sliding groove 1121, and the engaging member 123 is arranged in the second sliding groove 1122. Further, in order for the engaging member 123 to be able to engage with the suture needle 13, a first slit may be provided between the first sliding groove 1121 and the second sliding groove 1122, enabling the engaging member 123 to pass through the first slit and enter the first sliding groove 1121. However, this embodiment does not make any limitations in this regard.

[0077] In some examples, the first sliding groove 1121 and the second sliding groove 1122 can be arranged to overlap vertically, that is, the first sliding groove 1121 and the second sliding groove 1122 are arranged to overlap along the axial direction of the second housing. However, this embodiment does not make any limitations in this regard. In other embodiments, the first sliding groove 1121 and the second sliding groove 1122 can also be arranged to be concentric inside and outside, that is, one of the first sliding groove 1121 and the second sliding groove 1122 surrounds the other, and the two are concentrically arranged.

[0078] As Figure 4As shown, in some examples, the second housing 112 includes a first housing flap 112a and a second housing flap 112b. Both the first housing flap 112a and the second housing flap 112b are arc-shaped structures, and the first housing flap 112a and the second housing flap 112b are connected to each other and form a first sliding groove 1121 and a second sliding groove 1122 therebetween. For example, a plurality of grooves are provided on the sides of the first housing flap 112a and the second housing flap 112b facing each other. When the first housing flap 112a and the second housing flap 112b approach each other, the corresponding two grooves close up, so that the first sliding groove 1121 and the second sliding groove 1122 are formed between the first housing flap 112a and the second housing flap 112b. Further, when the first housing flap 112a and the second housing flap 112b are connected to each other, a first slit may also be formed therebetween. Such a setting facilitates simplifying the structure of the second housing 112 and is conducive to improving the production and assembly efficiency of the second housing 112. Moreover, since both the first sliding groove 1121 and the second sliding groove 1122 are formed between the first housing flap 112a and the second housing flap 112b, the suture needle 13 and the engaging member 123 can be disassembled and assembled only by disassembling the first housing flap 112a and the second housing flap 112b, which is conducive to improving the convenience of adjusting the stapler 1. However, this embodiment does not make any limitation thereto.

[0079] As Figure 4 shown, in some examples, a third sliding groove 1123 is further provided in the second housing 112. The third sliding groove 1123 is arranged along the arc direction of the second housing 112. When specifically arranged, the reset member is arranged in the third sliding groove 1123. Further, in order to enable the engaging member 123 to act on the reset member, a second slit may be provided between the second sliding groove 1122 and the third sliding groove 1123, so that the engaging member 123 can pass through the first slit to abut against the reset member, so that when the engaging member 123 moves, it can squeeze the reset member to deform it. However, this embodiment does not make any limitation thereto. In other embodiments, the second housing 112 may not need to be provided with the third sliding groove 1123, that is, the reset member may be arranged outside the second housing 112.

[0080] As Figure 4 shown, in some examples, the third sliding groove 1123 may be formed between the first housing flap 112a and the second housing flap 112b. In this case, the third sliding groove 1123 may be arranged overlapping the first sliding groove 1121 and the second sliding groove 1122 up and down. However, this embodiment does not make any limitation thereto. In other embodiments, the third sliding groove 1123 may be arranged in the first housing flap 112a or the second housing flap 112b. For example, the third sliding groove 1123 is arranged in the second housing flap 112b, that is, the third sliding groove 1123 is arranged outside the first sliding groove 1121 and the second sliding groove 1122.

[0081] As Figure 16As shown, in some examples, the third chute 1123, the first chute 1121, and the second chute 1122 are distributed in a triangular shape. With this arrangement, the height of the second housing 112 can be reduced, which is beneficial to expanding the viewing field of the endoscope.

[0082] As Figure 17 As shown, in some examples, the second housing 112 is provided with a third slit 1124 through which a suture is used to connect the suture needle 13. Specifically, the third slit 1124 can be provided on the inner circumferential surface of the second housing 112, that is, the third slit 1124 is provided on the first housing flap 112a and is arranged along the arc direction of the second housing 112. However, this embodiment does not make any limitation in this regard.

[0083] As Figure 4 As shown, in some examples, the second housing 112 is provided with a first limiting block 1125 and a second limiting block 1126. The first limiting block 1125 is provided at the first end of the second housing 112, and the second limiting block 1126 is provided at the second end of the second housing 112. The first limiting block 1125 and the second limiting block 1126 serve to close the second chute 1122 and the third chute 1123 to respectively limit the engaging member 123 and the reset member in the second chute 1122 and the third chute 1123. Specifically, the first limiting block 1125 and the second limiting block 1126 can be separately provided from the second housing 112 or can be an integral structure. However, this embodiment does not make any limitation in this regard.

[0084] As Figure 1 As shown, in some examples, a wire threading hole 1127 is formed between the second limiting block 1126 and the second housing 112. The wire threading hole 1127 is located at the end of the second chute 1122 and communicates with the second chute 1122. It is possible that the second limiting block 1126 blocks a part of the notch of the second chute 1122 to form the wire threading hole 1127. In a specific implementation, the driving member can pass through the wire threading hole 1127 to be connected to the engaging member 123. Further, in order to reduce the friction force, the wire threading hole 1127 can be provided with a chamfer. However, this embodiment does not make any limitation in this regard.

[0085] In some examples, in order to achieve the engagement between the suture needle 13 and the engaging member 123, the suture needle 13 can be provided with an engaging portion 131 to engage with the engaging member 123 using the engaging portion 131.

[0086] In some examples, the engaging portion 131 may be formed by a recess provided on the surface of the suture needle 13. That is, a groove is provided on the surface of the suture needle 13, and the engaging portion 131 is formed on one side of the groove close to the tip of the suture needle 13. However, this embodiment does not make any limitation in this regard. In other embodiments, the engaging portion 131 may also be formed by a protrusion provided on the surface of the suture needle 13.

[0087] In some examples, the depth of the groove is not greater than one-third of the diameter of the suture needle 13. With such a setting, it is possible to avoid the strength of the suture needle 13 being reduced due to the groove being too deep, thereby causing the suture needle 13 to break. However, this embodiment does not make any limitation in this regard.

[0088] As Figure 6 and Figure 7 shown, in some examples, the engaging portion 131 inclines towards the tail of the suture needle 13. With such a setting, the engaging portion 131 forms barbs, which can play a role in restricting the backward movement of the suture needle 13 during suturing. Compared with setting an anti-retreat needle assembly between the suture needle 13 and the main housing 11, this anti-backward movement design can reduce the number of parts of the stapler 1, which is beneficial to cost saving and improving the assembly efficiency. In addition, with the reduction of the number of parts, the resistance during the movement of the suture needle 13 will also decrease, thereby facilitating the operation of the operator. However, this embodiment does not make any limitation in this regard.

[0089] As Figure 7 shown, in some examples, the engaging portion 131 has a first surface 131a facing the tail of the suture needle 13. The first surface 131a engages with the engaging member 123, and the first surface 131a inclines towards the tail of the suture needle 13. With such a setting, the engaging portion 131 can form barbs so that the engaging portion 131 plays a role in restricting the backward movement of the suture needle 13 during suturing. It should be understood that in a specific implementation, if the engaging portion 131 only inclines towards the tail of the suture needle 13 on the side facing the tail of the suture needle 13, barbs can also be formed.

[0090] In some examples, the inclination angle of the first surface 131a is not greater than 80°. With such a setting, it is possible to avoid the barbs piercing the tissue due to being too sharp. However, this embodiment does not make any limitation in this regard.

[0091] As Figure 7 shown, in some examples, the engaging portion 131 has a second surface 131b facing away from the tail of the suture needle 13. The second surface 131b inclines towards the tail of the suture needle 13. With such a setting, the resistance generated by the engaging portion 131 during the needle insertion process can be reduced, making the needle insertion of the suture needle 13 smoother and not damaging the tissue. However, this embodiment does not make any limitation in this regard.

[0092] In some examples, the inclination angle of the second surface 131b is not less than 10°. With such a setting, the resistance generated by the engaging portion 131 during the needle insertion process can be minimized as much as possible, which is beneficial to reducing the operating force of the driving member. However, this embodiment does not make any limitation in this regard.

[0093] In some examples, the first surface 131a and the second surface 131b can be a plane or a curved surface. For example, the first surface 131a can be a plane, and the second surface 131b can be a plane. However, this embodiment does not make any limitation in this regard.

[0094] In some examples, the number of the engaging portions 131 is multiple, and the multiple engaging portions 131 are distributed at intervals along the axial direction of the suture needle 13. During specific use, the engaging member 123 can engage with any one or more of the multiple engaging portions 131. However, this embodiment does not make any limitation in this regard.

[0095] In some examples, two adjacent engaging portions 131 are respectively engaged with the engaging member 123. With such a setting, the stress received by the suture needle 13 can be dispersed, which is beneficial to ensuring the stability of the suture needle 13. However, this embodiment does not make any limitation in this regard.

[0096] In some examples, the interval between two adjacent engaging portions 131 is not greater than 60°. That is to say, the interval between the first surfaces 131a of two adjacent engaging portions 131 is not greater than 60°. With such a setting, it is convenient to reduce the size of the engaging member 123, so that the distance between the engaging member 123 and the end of the second chute 1122 can be increased, and the length of each needle insertion of the engaging member 123 driving the suture needle 13 can be increased. However, this embodiment does not make any limitation in this regard.

[0097] As Figure 18 and Figure 19 shown, in some examples, the engaging portion 131 is located on the outer peripheral surface of the suture needle 13. Correspondingly, the second chute 1122 can be located on the outer periphery of the first chute 1121. That is to say, the engaging member 123 is located on the outer periphery of the suture needle 13, and the engaging member 123 is engaged with the outer peripheral surface of the suture needle 13. With such a setting, the acting point of the force can be far away from the center of the suture needle 13, so that the force arm can be increased. That is to say, when the torque remains unchanged, the acting force of the driving member on the suture needle 13 can be appropriately reduced, and further the operating force applied by the operator to the driving member can be reduced, which is beneficial to improving the operation convenience and the operating stability of the suture needle 13. However, this embodiment does not make any limitation in this regard.

[0098] In some examples, the engaging member 123 can change its shape to engage or disengage with the suture needle 13. For example, the engaging member 123 has a first shape and a second shape. In the first shape, the engaging member 123 engages with the suture needle 13, and in the second shape, the engaging member 123 disengages from the suture needle 13. However, this embodiment does not make any limitations in this regard.

[0099] As Figure 4 and Figures 8 to 15 shown, in some examples, the engaging member 123 includes a needle control shuttle 1231 and a needle control swing tooth 1232. Among them, the needle control shuttle 1231 is slidably disposed in the first chute 1121, and the needle control swing tooth 1232 is rotatably disposed on the needle control shuttle 1231. The needle control swing tooth 1232 is used to engage with the engaging portion 131 of the suture needle 13 and can rotate relative to the needle control shuttle 1231 when the needle control shuttle 1231 moves relative to the suture needle 13 in the needle withdrawal direction to disengage from the engaging portion 131 of the suture needle 13. That is to say, when the needle control swing tooth 1232 rotates relative to the needle control shuttle 1231, the shape of the engaging member 123 can be changed. When the engaging member 123 is in the first shape, it engages with the suture needle 13 through the needle control swing tooth 1232. When the needle control shuttle 1231 moves relative to the suture needle 13 in the needle withdrawal direction, the needle control swing tooth 1232 can rotate relative to the needle control shuttle 1231 to the second shape, so that the engaging member 123 disengages from the suture needle 13. In the above process, by rotating the needle control swing tooth 1232 to disengage the engaging member 123 from the suture needle 13, the back thrust generated when the engaging member 123 and the suture needle 13 are disengaged can be reduced, thereby avoiding the suture needle 13 from retracting when the engaging member 123 is reset.

[0100] As Figure 11 shown, in some examples, the needle control shuttle 1231 is provided with a rotating shaft 1233, and the needle control swing tooth 1232 is sleeved on the rotating shaft 1233 and can rotate relative to the needle control shuttle 1231. When specifically arranged, the needle control shuttle 1231 includes a symmetric first shuttle body 1231a and a second shuttle body 1231b. The first shuttle body 1231a and the second shuttle body 1231b are connected to form the needle control shuttle 1231, and the rotating shaft 1233 is arranged between the first shuttle body 1231a and the second shuttle body 1231b. When installing the control swing tooth, first separate the first shuttle body 1231a and the second shuttle body 1231b, then sleeve the needle control swing tooth 1232 on the rotating shaft 1233, and then connect and fix the first shuttle body 1231a and the second shuttle body 1231b. However, this embodiment does not make any limitations in this regard.

[0101] As Figure 4 and Figure 11As shown, in some examples, the needle control shuttle 1231 is provided with a limiting portion 1234, and the limiting portion 1234 is used to limit the rotation of the needle control swing tooth 1232 relative to the needle control shuttle 1231 when the sewing needle 13 penetrates. Specifically, the limiting portion 1234 is arranged between the first shuttle body and the second shuttle body, and the limiting portion 1234 is located on the side of the needle control swing tooth 1232 close to the tail of the sewing needle 13. However, this embodiment does not make any limitation on this.

[0102] As Figure 11 shown, in some examples, the needle control shuttle 1231 is provided with a needle control swing tooth reset member, and the control swing tooth reset member is used to drive the needle control swing tooth 1232 to reset. Specifically, the needle control swing tooth reset member can adopt a metal elastic sheet 1235. The metal elastic sheet 1235 is arranged between the first shuttle body and the second shuttle body, and the metal elastic sheet 1235 is located on the side of the needle control swing tooth 1232 close to the tip of the sewing needle 13. One end of the metal elastic sheet 1235 is connected and fixed to one or both of the first shuttle body and the second shuttle body, and the other end is attached to the needle control swing tooth 1232. When the needle control shuttle 1231 moves relative to the sewing needle 13 in the needle withdrawing direction, the needle control swing tooth 1232 can be squeezed by the sewing needle 13, so as to rotate relative to the needle control shuttle 1231, and at the same time, the metal elastic sheet 1235 will be squeezed to deform. When the squeezing effect of the sewing needle 13 disappears, the metal elastic sheet 1235 will drive the needle control swing tooth 1232 to rotate in the opposite direction and reset. However, this embodiment does not make any limitation on this. In other embodiments, the needle control swing tooth reset member can be replaced by a structure made of a polymer material such as elastic silica gel with a certain restoring force or elasticity.

[0103] In some examples, a needle control shuttle reset member (i.e., the reset member in the foregoing text) is arranged between the needle control shuttle 1231 and the main housing 11, and the needle control shuttle reset member is used to drive the needle control shuttle 1231 to reset. Specifically, the reset member can adopt a compression spring 122. The compression spring 122 is arranged in the third sliding groove 1123 and abuts between the second limiting block 1126 and the pressing portion 1237 arranged on the needle control shuttle 1231. When the needle control shuttle 1231 moves in the needle penetrating direction, the pressing portion 1237 can squeeze the compression spring 122 to compress it. When the driving member is released, the force of the driving member acting on the needle control shuttle 1231 disappears, and the compression spring 122 will drive the needle control shuttle 1231 to move in the opposite direction and reset. However, this embodiment does not make any limitation on this. In other embodiments, the needle control shuttle reset member can be replaced by a structure made of a polymer material such as elastic silica gel with a certain restoring force or elasticity.

[0104] As Figure 4 and Figure 8As shown, in some examples, a connecting portion 1236 is provided on the needle control shuttle 1231. The connecting portion 1236 is located on a side of the needle control shuttle 1231 facing the tip of the suture needle 13. The needle control shuttle 1231 is connected to the operating rope 121 through the connecting portion 1236. When specifically arranged, the connecting portion 1236 can be a circular ring or a semi-circular ring provided on the needle control shuttle 1231. However, this embodiment does not make any limitation thereto.

[0105] As Figure 4 shown, in some examples, the needle control swing tooth 1232 is provided with a pointed tooth portion 1232a. The pointed tooth portion 1232a is used to insert into the groove on the surface of the suture needle 13 and abut against the engaging portion 131. However, this embodiment does not make any limitation thereto.

[0106] In some examples, the needle control swing tooth 1232 engages with the outer peripheral surface of the suture needle 13. That is, the needle control swing tooth 1232 engages with the engaging portion 131 on the outer peripheral surface of the suture needle 13.

[0107] In some examples, the number of the needle control swing teeth 1232 can be multiple. The multiple needle control swing teeth 1232 are spaced along the axial direction of the suture needle 13, and the multiple needle control swing teeth 1232 respectively engage with multiple engaging portions 131. For example, as Figure 4 and Figures 8 to 15 shown, the number of the needle control swing teeth 1232 is two, and the interval between the two needle control swing teeth 1232 is equal to the interval between any two adjacent engaging portions 131. However, this embodiment does not make any limitation thereto.

[0108] In some examples, the driving member can be a silk thread. In this embodiment, the silk thread is defined as the operating rope 121. In a specific implementation, the first end of the operating rope 121 is connected to the engaging member 123, and the second end of the operating rope 121 passes through the forceps channel tube of the endoscope and is led out. During use, the operator can apply a pulling force to the second end of the operating rope 121 to tighten the operating rope 121 and drive the engaging member 123 to move in the second chute 1122 in the needle insertion direction, thereby realizing the needle insertion of the suture needle 13. In other embodiments, the driving member may not adopt the operating rope 121, and the control of the suture needle 13 can be realized through other structures.

[0109] As Figure 1As shown, in some examples, the operating cord 121 can enter the second chute 1122 through the threading hole 1127 provided at the end of the second chute 1122 and be connected to the engaging member 123. With this arrangement, the operating cord 121 can pull the engaging member 123 in accordance with the travel of the suture needle 13, which can reduce the frictional force between the engaging member 123 and the housing, thereby facilitating the reduction of the operating resistance of the operating cord 121. Moreover, since the frictional force between the engaging member 123 and the housing is reduced, the wear between the structures is smaller, which is beneficial to improving the service life of the stapler 1. In addition, since the operating cord 121 is connected to the engaging member 123 after entering the second chute 1122, when the operating cord 121 is tightened or released (i.e., when the engaging member 123 moves in the second chute 1122), the possibility that the part of the operating cord 121 exposed outside the housing interferes with instruments such as sampling forceps, biopsy forceps, and foreign body forceps is reduced, so that the possibility that the operating cord 121 is wound due to excessive exposure can be reduced.

[0110] To more clearly illustrate how the stapler 1 provided in the embodiments of the present application performs the suturing action on the target suturing tissue, the following is combined with Figures 8 - 15 for description. To clearly show the positions of the internal parts, not all components are drawn in the drawings. The "left side", "middle part", and "right side" mentioned in the following description are all based on Figures 8 - 15 the positional relationship in

[0111] As Figure 8 shown, at the initial position, the operating cord 121 is slack, the needle control shuttle 1231 is on the left side of the second chute 1122, and the two needle control swing teeth 1232 are engaged in two adjacent grooves at the tail position of the suture needle 13. That is, there is a linkage relationship between the needle control swing teeth 1232 and the suture needle 13.

[0112] As Figure 9 shown, when the operating cord 121 is pulled, the operating cord 121 pulls the needle control shuttle 1231 to move clockwise in the second chute 1122. Since there is a linkage relationship between the needle control swing teeth 1232 and the suture needle 13, the needle control shuttle 1231 drives the suture needle 13 to advance clockwise until the needle control shuttle 1231 moves to the right end of the second chute 1122. At this time, the compression spring 122 is compressed to the limit, and the needle control shuttle 1231 can no longer drive the needle control swing teeth 1232 to move forward, that is, it can no longer pull the operating cord 121. At the same time, the tip of the suture needle 13 exits the needle outlet at the right end of the first chute 1121, passes through the target suturing tissue, and then the tip of the suture needle 13 enters the left end of the first chute 1121, completing one needle insertion.

[0113] As Figure 10As shown, when the operating rope 121 is released, the acting force that causes the operating rope 121 to move the needle control shuttle 1231 in the clockwise direction disappears. The compression spring 122 provides a force to move the needle control shuttle 1231 in the counterclockwise direction, and the compression spring 122 causes the needle control shuttle 1231 to retreat in the counterclockwise direction. At the same time, when the two needle control swing teeth 1232 receive the reaction force from the sewing needle 13, they rotate in the counterclockwise direction relative to the needle control shuttle 1231, and the two metal elastic pieces 1235 flip up in the counterclockwise direction until the needle control shuttle 1231 moves away from the tail of the sewing needle 13. Then, the reaction force from the sewing needle 13 disappears, and the metal elastic pieces 1235 recover in the clockwise direction and drive the needle control swing teeth 1232 to reset.

[0114] As Figure 11 shown, the compression spring 122 continues to provide a force to move the needle control shuttle 1231 in the counterclockwise direction, and the compression spring 122 causes the needle control shuttle 1231 to continue to retreat in the counterclockwise direction until the needle control shuttle 1231 reaches the tip position of the sewing needle 13. At the same time, the compression spring 122 is close to full recovery, and the two needle control swing teeth 1232 are placed on the needle body at the tip position of the sewing needle 13, and the metal elastic pieces 1235 flip up slightly in the counterclockwise direction.

[0115] As Figure 12 shown, the needle control shuttle reset member continues to provide a force to move the needle control shuttle 1231 in the counterclockwise direction, and the needle control shuttle reset member causes the needle control shuttle 1231 to continue to retreat in the counterclockwise direction until the needle control shuttle 1231 reaches the left end of the second chute 1122. At the same time, the compression spring 122 is fully recovered, and the two needle control swing teeth 1232 are respectively caught in two adjacent grooves at the tip position of the sewing needle 13 under the action of the metal elastic pieces 1235, and a linkage relationship is formed again between the needle control swing teeth 1232 and the sewing needle 13.

[0116] As Figure 13 shown, when the operating rope 121 is pulled again, the operating rope 121 pulls the needle control shuttle 1231 again to move it in the clockwise direction in the second chute 1122. Since there is a linkage relationship between the needle control swing teeth 1232 and the sewing needle 13, the needle control shuttle 1231 continues to drive the sewing needle 13 to move forward in the clockwise direction, and the part of the sewing needle 13 that penetrates the target sewing tissue (or enters the first chute 1121) gradually increases. At the same time, the needle control shuttle 1231 moves to the middle of the second chute 1122, and the compression spring 122 is compressed again.

[0117] As Figure 14As shown, continue to pull the operating rope 121. The operating rope 121 continues to pull the needle control shuttle 1231 to move it clockwise in the second chute 1122. Since there is a linkage relationship between the needle control swing teeth 1232 and the sewing needle 13, the needle control shuttle 1231 continues to drive the sewing needle 13 to advance clockwise, and the part of the sewing needle 13 passing through the target sewing tissue (or entering the first chute 1121) gradually increases until the needle control shuttle 1231 moves to the right end of the second chute 1122. At the same time, the compression spring 122 is compressed to the limit, and the sewing needle 13 returns to the initial position, completing one needle out.

[0118] As Figure 15 shown, release the operating rope 121 again. The acting force that makes the operating rope 121 move clockwise on the needle control shuttle 1231 disappears. The compression spring 122 provides a force for the needle control shuttle 1231 to move counterclockwise. The compression spring 122 makes the needle control shuttle 1231 retreat counterclockwise until the needle control shuttle 1231 moves to the left end of the second chute 1122. At the same time, the two needle control swing teeth 1232 are engaged in two adjacent grooves at the tail position of the sewing needle 13. That is to say, there is a linkage relationship between the needle control swing teeth 1232 and the sewing needle 13, and the stapler 1 returns to the initial position.

[0119] The above two operations of pulling and releasing the operating rope 121 realize one needle insertion and one needle out of the sewing needle 13 (i.e., one suture). Repeat the above operations to perform the suture of the target sewing tissue or the knotting operation of the suture. However, the number of times of pulling the rope required for one suture in this embodiment is not limited in any way. It should be understood that in other embodiments, the number of times of pulling the rope required for one suture can be adjusted by adjusting the compression displacement of the reset member and the groove interval on the sewing needle 13.

[0120] In some examples, the action of operating the operating rope 121 can be completed by operating the control handle. That is to say, for the operation of the driving member, tightening or releasing can be performed through the control handle. However, this embodiment does not make any limitation in this regard. In other embodiments, the driving member can also be other components that can drive the engaging member to move.

[0121] As Figures 26 to 38 shown, in some examples, the control handle 2 includes a handle housing 21, an operating rope wheel 22, a clutch disc 23, and a pull rod 24. The operating rope wheel 22 is arranged inside the handle housing 21, and the driving member on the stapler 1 is an operating rope and is connected to the operating rope wheel 22. The clutch disc 23 is detachably arranged on one side of the operating rope wheel 22, and a toothed ring 231 meshing with the operating rope wheel 22 is provided on the side of the clutch disc 23 close to the operating rope wheel 22. The pull rod 24 is connected to the clutch disc 23 and is resetably connected to the handle housing 21.

[0122] As Figure 24 andFigure 25 As shown, in some examples, the pull rod 24 is reset-connectable to the handle housing 21 via a tension spring 25. However, this embodiment does not make any limitation thereto. In other embodiments, the pull rod may also be provided with a torsion spring connected to the handle housing to achieve resetting.

[0123] In the control handle 2 provided in this embodiment, the clutch disc 23 and the operating rope pulley 22 are of a separable structure. When it is necessary to drive the suture needle 13 on the stapler 1 to move forward, the clutch disc 23 is connected to the operating rope pulley 22, and the two are in a linkage relationship and the operating rope is tensioned. The operator pulls the pull rod 24, and the pull rod 24 drives the operating rope pulley 22 to rotate through the clutch disc 23, so as to realize the pulling of the operating rope on the stapler 1. When the operating rope is pulled to the limit position of the reset member, the operating rope cannot be pulled any more. At this time, the clutch disc 23 and the operating rope pulley 22 are separated, and the operating rope is in a relaxed state. Under the action of the reset member on the stapler 1, the relaxed operating rope follows the needle control shuttle 1231 to retract. The separated clutch disc 23 follows the pull rod 24 to reset under the drive of the tension spring 25 and returns to the linkage state with the operating rope pulley 22 after resetting.

[0124] As Figure 30 shown, in some examples, the handle housing 21 includes a front shell 211, a middle shell 212 and a rear shell 213 arranged in sequence. The pull rod 24 is connected to the rear shell 213 via a tension spring 25. The rear shaft of the clutch disc 23 passes through the middle shell 212 and is sleeved on the pull rod 24. Four compression springs 26 are arranged between the clutch disc 23 and the middle shell 212. The front side of the clutch disc 23 meshes with the operating rope pulley 22, and the front shaft of the clutch disc 23 passes through the operating rope pulley 22 and the front shell 211 respectively. When the driving member is in the driving state, the four compression springs 26 push the clutch disc 23 to make the clutch disc 23 mesh with the operating rope pulley 22; when the driving member can no longer be pulled, the four compression springs 26 are compressed by pressing the front shaft of the clutch disc 23 of the front shell 211, and the clutch disc 23 is axially separated from the operating rope pulley 22, and the operating rope is in a relaxed state. The reset member on the stapler pulls back the relaxed driving member through the needle control shuttle 1231. Finally, the pull rod 24 is released, and the pull rod 24 drives the clutch disc 23 to reset under the action of the tension spring 25. However, this embodiment does not make any limitation to the number of the compression springs and the separation method of the clutch disc.

[0125] The setting of the clutch disc 23 not only enables the operating rope wheel 22 to rotate following the pull rod 24, but also limits the operating rope wheel 22 to prevent it from rotating counterclockwise. Further, the clutch disc 23 and the operating rope wheel 22 are meshed by matching of the engaging teeth, making full use of the mechanical principle, increasing the mechanical torque, and making the pull rod 2 more labor-saving. Preferably, the operating rope wheel 22 is provided with a slot ring 224 corresponding to the engaging tooth ring 231, and when meshing, the engaging teeth on the engaging tooth ring 231 are inserted into the slots on the slot ring 224. However, this embodiment does not make any limitation in this regard. In other embodiments, the operating rope wheel may also be provided with protruding engaging teeth that mesh with the engaging tooth ring. In this embodiment, as Figures 31 to 33 shown, the control handle 2 further includes an operating rope fixing member 27 disposed inside the operating rope wheel 22. The operating rope 121 as the driving member is connected to the operating rope wheel 22 through the operating rope fixing member 27. The operating rope 121 fixing member 27 includes an arc-shaped pin 271 and a pin spring 272. The arc-shaped pin 271 is connected to the inside of the operating rope wheel 22 through the pin spring 272. The operating rope wheel 22 is provided with a side hole 221 and a pin chute 223. The driving member extends into the operating rope wheel 22 through the side hole 221 and is sleeved on the arc-shaped pin 271. This setting ensures that the driving member will not disengage from the operating rope wheel 22 during the pulling process. When fixing the driving member, the operator first pulls the arc-shaped pin 271 clockwise along the pin chute 223; then, the driving member is extended into the operating rope wheel 22 from the side hole 221 of the operating rope wheel 22, and the fixing ring at the front end of the driving member is aligned with the end of the arc-shaped pin 271. After that, the arc-shaped pin 271 is released, and the pin spring 272 drives the arc-shaped pin 271 to reset along the pin chute 223, and the front end of the arc-shaped pin 271 passes through the fixing ring at the front end of the operating rope wheel 22. To facilitate viewing the fixing state of the driving member, in this embodiment, the operating rope wheel 22 is further provided with an observation hole 222. The setting of the operating rope fixing member 27 enables the driving member to change along the arc-shaped side of the operating rope wheel inside the control handle 2, greatly reducing the resistance of the driving member during operation, making it very easy for the finger to pull back the pull rod, and the operation is very convenient. However, this embodiment does not make any limitation in this regard.

[0126] Further, the control handle 2 further includes a guiding cylindrical pin 28 disposed on one side of the operating rope wheel 22 and used for guiding the driving member. The driving member bypasses the guiding cylindrical pin 28 and then enters the side hole 221. However, this embodiment does not make any limitation in this regard.

[0127] After installation, due to matching different models of endoscopes, the length of the driving member reserved outside the operating rope wheel 22 may be different, and there may be too much reserved amount, resulting in the driving member being in a slack state. At this time, press the clutch disc 23 to separate the clutch disc 23 and the operating rope wheel 22, and then rotate the operating rope wheel 22 counterclockwise to tighten the excess driving member into the operating rope wheel 22; after tightening, release the clutch disc 23, and the clutch disc 23 meshes with the operating rope wheel 22.

[0128] In some examples, both the front shell 211 and the rear shell 213 are square structures. Compared with a circular housing, the square housing structure can make the volume of each internal component smaller, so the overall shape will also be smaller, and thus the packaging will be smaller, greatly reducing the cost. In addition, the square housing also reduces the distance between the pull rod 24 and the operator's tiger mouth, reduces the amplitude of finger spreading and hook grasping, and reduces the operating resistance, which conforms to the ergonomics of the hand and is not likely to induce hand tendon sheath or ligament or muscle injuries of the operator. The operation is more relaxed, the suture is more accurate, the operation is faster, the continuous holding is longer, and the finger fatigue is slower. However, the structure of the handle housing in this embodiment is not limited in any way.

[0129] In some examples, the control handle 2 further includes a fixing structure, and the control handle 2 is fixed to the operating end of the endoscope through the fixing structure. It is possible that the fixing structure is arranged on the rear shell 213 of the control handle 2, and the control handle 2 is fixed to the handle and / or the forceps port of the endoscope through the fixing structure.

[0130] In some examples, the fixing structure can be fixed to the operating end of the endoscope by means of socketing and / or screwing. Compared with the prior art method of fixing by cable ties, such an arrangement can simplify the operation steps of fixing the control handle 2 and facilitate the operation of the operator.

[0131] In some examples, the fixing structure can be a combination of one or more of the following structures: a snap cap, a clamping ring, a nut, an insertion tube, etc. As Figure 39 shown, the rear shell 213 with a snap cap 2131 is shown, and the snap cap 2131 can be socketed on the forceps port of the endoscope. As Figure 40 shown, the rear shell 213 with a snap cap 2131 and a clamping ring 2132 is shown. While the snap cap 2131 is socketed on the forceps port of the endoscope, the clamping ring 2132 can be sleeved outside the handle of the endoscope. As Figure 41 shown, the rear shell 213 with a snap cap 2131 and a nut 2133 is shown. While the snap cap 2131 is socketed on the forceps port of the endoscope, the nut 2133 can be screwed with the snap cap 2131 to make the socketing of the snap cap 2131 tighter. As Figure 42 shown, the rear shell 213 with a snap cap 2131 and an insertion tube 2134 is shown. The snap cap 2131 is sleeved outside the insertion tube 2134 and is fixedly connected to the insertion tube 2134. While the snap cap 2131 is socketed on the forceps port of the endoscope, the insertion tube 2134 is inserted into the forceps port, so that the snap cap 2131 cannot move radially relative to the forceps port.

[0132] In some examples, the fixing structure is detachably arranged on the control handle 2. Such an arrangement can connect and fix to the endoscope by replacing different types of fixing structures with different types of fixing structures.

[0133] It should be noted that the above-mentioned control handle 2 can also be applicable to other operating instruments that rely on the use of an endoscope. For example, ligators, snare devices, and closure clips, etc. These operating instruments all include operating ropes for controlling their operations. During use, the control handle 2 can be connected to the operating ropes of these operating instruments, and the control handle 2 can control (tighten or release) the operating ropes to control the operation of the operating instruments.

[0134] On the other hand, the present embodiment also provides a treatment device, which includes the above-mentioned stapler 1 and control handle 2, and this treatment device is used in cooperation with an endoscope. The stapler 1 is fixed to the front end of the endoscope. The control handle 2 is fixed to the operating end of the endoscope, the control handle 2 is connected to the driving member of the stapler 1, and the control handle 2 controls the driving member to control the advancement of the suture needle 13.

[0135] In the present embodiment, the treatment device may further include a hook forceps. The hook forceps performs the action of clamping tissue or pulling a suture thread at the front end of the endoscope, and finally can clamp both ends of the suture thread to complete the knotting action of the suture thread. The hook forceps can enter through the forceps channel of the endoscope itself, or can enter through the external forceps channel of the endoscope, and no limitation is made here. In actual use, two hook forceps can be inserted simultaneously through two forceps channels to work, or only one hook forceps can be used to work. In the present embodiment, the front end of the hook forceps is in a shape with hooks and / or teeth. For example, the hook forceps can be a sampling forceps, a biopsy forceps, a foreign body forceps, a grasping forceps, etc.

[0136] On the other hand, the present embodiment also provides a treatment equipment, including the above-mentioned treatment device and an endoscope. The treatment device is used in cooperation with the endoscope, and the treatment device includes the above-mentioned stapler 1 and control handle 2.

[0137] Embodiment Two

[0138] This embodiment is basically the same as Embodiment One and its variations, the difference being: the structure of the main housing 11' is different.

[0139] As Figures 18 to 25 shown, in some examples, the main housing 11' includes a first housing 111', a second housing 112', and a third housing 113'. The first housing and the second housing 112' are fixedly connected, and the third housing 113' is rotatably arranged on the first housing 111' and is used for sleeving on the front end of the endoscope. With such a setting, the first housing 111' can rotate relative to the third housing 113', so as to be able to adjust the opening direction of the second housing 112'.

[0140] In some examples, the first housing 111' is provided with a first gear 1112', the third housing 113' is provided with a second gear 1131', the first gear 1112' and the second gear 1131' are meshed with each other, and one of the first gear 1112' and the second gear 1131' can be rotated by a hook forceps penetrating through the third housing 113' to drive the relative rotation of the first housing 111' and the third housing 113'. For example, the first gear 1112' is rotatable relative to the first housing 111', the second gear 1131' is fixed relative to the third housing 113', and the first gear 1112' can be rotated by the hook forceps 3' penetrating through the third housing 113' to drive the relative rotation of the first housing 111' and the third housing 113'. In actual use, the hook forceps can be a sampling forceps, a biopsy forceps, a grasping forceps, etc. After the hook forceps 3' passes through the third housing 113', it can clamp the first gear 1112' and drive the first gear 1112' to rotate clockwise or counterclockwise. At the same time, the first gear 1112' drives the second gear 1131' to rotate, so that the first housing 111' rotates circumferentially relative to the third housing 113' to adjust the opening direction of the second housing 112'. With such a setting, the orientation of the C-shaped opening of the second housing 112' can be arbitrarily switched by means of the hook forceps 3' inserted through the forceps opening, so that the stapler can accurately reach the target suture site and achieve the best suture effect. Moreover, such a setting does not require an additional steering mechanism and an additional channel that rotates around the third housing 113', so that the size of the housing can be reduced, tissue damage can be avoided, and it is also beneficial to reduce the operation difficulty of the stapler 1' entering and exiting the body and its operation after entering the body, facilitating surgical operation.

[0141] In some examples, the first gear 1112' is located outside the third housing 113', and the second gear 1131' is sleeved outside the third housing 113'. With such a setting, it is possible to prevent the operating rope 121' from being wound around the first gear 1112' and the second gear 1131', thus affecting the normal use of the stapler 1'. However, this embodiment does not make specific limitations in this regard.

[0142] In some examples, the axis of the first gear 1112' is perpendicular to the axis of the second gear 1131'. That is to say, both the first gear 1112' and the second gear 1131' are bevel gears, and in the meshed state, the axis of the first gear 1112' is perpendicular to the axis of the second gear 1131'. With such a setting, the size of the housing can be reduced, facilitating surgical operation. However, this embodiment does not make specific limitations in this regard.

[0143] In some examples, the first gear 1112' is disposed on the connecting handle 1111' of the first housing 111'. Specifically, the first gear 1112' can be located inside the connecting handle 1111'. With this arrangement, even if the first gear 1112' is exposed, it will not come into contact with the internal tissues, which is conducive to simplifying the structural design and reducing production costs. However, this embodiment does not make specific limitations in this regard.

[0144] In some examples, chamfers are provided at the corners of both the first gear 1112' and the second gear 1131'. With this arrangement, even if the first gear 1112' and the second gear 1131' are exposed, they will not damage the internal tissues. Additionally, since the internal tissues are soft and elastic, the teeth of the first gear 1112' and the second gear 1131' can be as small as possible, enabling the internal tissues to naturally avoid when coming into contact with the gears. However, this embodiment does not make specific limitations in this regard.

[0145] In some examples, the first housing 111' can be a tubular structure sleeved on the third housing 113'. However, this embodiment does not make specific limitations in this regard. In other embodiments, the first housing 111' can be an arc-shaped structure that partially surrounds or semi-surrounds the third housing 113'.

[0146] As Figure 23 shown, in some examples, a nested structure is provided between the first housing 111' and the third housing 113'. That is, the inner surface of the first housing 111' can be provided with convex ribs 1113', and the outer surface of the third housing 113' can be provided with an annular groove 1132' that cooperates with the convex ribs 1113'. In the assembled state, the convex ribs 1113' are snapped into the annular groove 1132', which can limit the axial movement of the first housing 111' relative to the third housing 113'. However, this embodiment does not make specific limitations in this regard.

[0147] In some examples, there can be multiple sets of nested structures between the first housing 111' and the third housing 113'. For example, as Figure 23 shown, the first housing 111' is provided with two convex ribs 1113', and the two convex ribs 1113' are respectively located at the axial two ends of the first housing 111'. The third housing 113' is provided with two annular grooves 1132', and the two annular grooves 1132' respectively cooperate with the two convex ribs 1113'. However, this embodiment does not make specific limitations in this regard. In other embodiments, when the first housing 111' adopts an arc-shaped structure, the first housing 111' and the third housing 113' can be connected through the convex ribs 1113' and the annular grooves 1132'. For example, one of the two annular grooves 1132' on the third housing 113' is inclined downward, and the other is inclined upward. In this way, there is no need to provide additional connecting parts or connecting features, which is conducive to simplifying the structure of the housing.

[0148] As Figure 23 shown, in some examples, a limiting structure may be provided between the first housing 111' and the third housing 113'. For example, a plurality of ball grooves 1114' are provided on the inner surface of the first housing 111' along its circumferential direction, and a plurality of convex balls 1133' that cooperate with the ball grooves 1114' are provided on the outer surface of the third housing 113'. In the assembled state, every time the first housing 111' rotates a certain angle relative to the third housing 113', the convex balls 1114' can be engaged in the corresponding ball grooves 1133', which can achieve a limiting effect to prevent the first housing 111' and the third housing 113' from rotating randomly relative to each other, thus affecting suturing.

[0149] On the other hand, the present embodiment also provides a treatment device, which includes the above-mentioned stapler 1' and the hook forceps 3', and the treatment device is used in cooperation with an endoscope. The stapler 1' is fixed to the distal end of the endoscope.

[0150] In the present embodiment, the treatment device may further include a control handle, the control handle is fixed to the operating end of the endoscope, the control handle is connected to the driving member of the stapler 1', and the control handle controls the driving member to control the advancement of the suture needle 13'.

[0151] On the other hand, the present embodiment also provides a treatment device, including the above-mentioned treatment device and an endoscope. The treatment device is used in cooperation with the endoscope, and the treatment device includes the above-mentioned stapler 1' and the hook forceps 3'.

[0152] One or more embodiments of this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification shall be included in the protection scope of this application.

[0153] The above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of changes or substitutions, which should all be covered by the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

1. A stapler, characterized in that, The stapler includes: A main housing; A suture needle slidably disposed in the main housing, one end of the suture needle being connected with a suture thread and the other end being a tip; A needle driving assembly disposed on the main housing and forming a separable engaging relationship with the suture needle to control the advancement of the suture needle; Wherein, the suture needle is provided with an engaging portion for engaging with the needle driving assembly, and the engaging portion inclines towards the tail of the suture needle.

2. The stapler according to claim 1, characterized in that, The engaging portion has a first surface facing the tail of the suture needle and a second surface facing away from the tail of the suture needle, and both the first surface and the second surface incline towards the tail of the suture needle.

3. The stapler according to claim 2, wherein The inclination angle of the first surface is not greater than 80°; and / or the inclination angle of the second surface is not less than 10°.

4. The stapler according to claim 1, wherein The engaging portion is formed by a groove provided on the surface of the suture needle.

5. The stapler according to claim 1, characterized in that, The number of the engaging portions is multiple, and the multiple engaging portions are spaced along the axial direction of the suture needle, and the interval between two adjacent engaging portions is not greater than 60°.

6. The stapler according to claim 1, wherein The engaging portion is located on the outer circumferential surface of the suture needle.

7. The stapler according to claim 1, characterized in that, The main housing includes a first housing, a second housing and a third housing, the first housing and the second housing are connected, and the third housing is rotatably disposed on the first housing and is used for sleeving on the tip of an endoscope; Wherein, the first housing is provided with a first gear, the third housing is provided with a second gear, the first gear and the second gear are meshed with each other, and one of the first gear and the second gear can be rotated by a forceps passing through the third housing to drive the relative rotation of the first housing and the third housing.

8. The stapler according to claim 7, wherein, The first gear is rotatable relative to the first housing, the second gear is fixed relative to the third housing, and the first gear can be rotated by a forceps passing through the third housing to drive the relative rotation of the first housing and the third housing.

9. A treatment device, used in cooperation with an endoscope, characterized in that, The treatment device includes: A stapler fixed to the tip of the endoscope, and the stapler includes: A main housing; A suture needle slidably disposed in the main housing, one end of the suture needle being connected with a suture thread and the other end being a tip; A needle driving assembly disposed on the main housing and forming a separable engaging relationship with the suture needle to control the advancement of the suture needle; Wherein, the suture needle is provided with an engaging portion for engaging with the needle driving assembly, and the engaging portion inclines towards the tail of the suture needle; A control handle fixed to the operating end of the endoscope, the control handle being connected to the needle driving assembly of the stapler, and the control handle controls the needle driving assembly to control the advancement of the suture needle.

10. A treatment device, characterized in that, Including: An endoscope; A stapler fixed to the tip of the endoscope, and the stapler includes: A main housing; A suture needle slidably disposed in the main housing, one end of the suture needle being connected with a suture thread and the other end being a tip; A needle driving assembly disposed on the main housing and forming a separable engaging relationship with the suture needle to control the advancement of the suture needle; Wherein, the suture needle is provided with an engaging portion for engaging with the needle driving assembly, and the engaging portion inclines towards the tail of the suture needle; The control handle is fixed to the operating end of the endoscope. The control handle is connected to the needle insertion assembly of the stapler, and the control handle controls the needle insertion assembly to control the advancement of the suture needle.

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