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 comprises a driving part and a clamping part, the clamping part and the suture needle are in a separable clamping relation, and the driving part acts on the clamped clamping part and the suture needle and controls the suture needle to advance; wherein the clamping piece is located on the periphery of the suture needle, and the clamping piece is clamped with the peripheral face of the suture needle. Through the arrangement, the acting point of force can be far away from the circle center of the suture needle, so that the force arm can be increased, namely, the acting force of the driving piece on the suture needle can be properly reduced under the condition that the torque is not changed, and then the operating force applied to the driving piece by an operator can be reduced; the operation convenience is improved, and the operation stability of the suture needle is improved.

Description

Technical Field

[0001] The present application relates to a medical device, and more particularly, to a stapler, a treatment device having a 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. Thus, scarless surgery has emerged. To achieve scarless 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 following 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 conscious 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 of Apollo Endosurgery in the United States, and the endoscopic helical tacking system (Endoscopic HeliX Tacking System) recently launched by this 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, this system not only has many accessories and complex operations, but also the suture depends on at least 3 metal helical tacks, and knotting still depends on clips. The hard and sharp helical tacks that rotate through tissues for suture remain in the body, making it difficult to rule out 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 and lift the tissue without perforating the tissue for tissues that are not separated through the full layer; for tissues that are separated through the full layer, due to the lack of fixation or support at the separated edge, it is also very difficult to avoid exacerbating the separation of the separated tissue and the inclination of the screw when penetrating the tissue, resulting in the inability to penetrate vertically or the penetration being off-target.

[0004] Chinese Patent Application No. 202310000329.7 (filing date: January 3, 2023) discloses a stapler, a treatment device having a stapler, and a treatment apparatus. This patent realizes the suture and knotting of soft tissues in the body by controlling the needle insertion assembly and the anti-needle-retraction assembly. However, in this application, due to the setting of the anti-needle-retraction assembly, the number of parts of the stapler increases, and as the number of parts increases, the resistance during the movement of the suture needle also increases, which will affect the operation of the operator. Summary of the Utility Model

[0005] 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 apparatus.

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

[0007] A main housing;

[0008] A suture needle slidably disposed in the main housing, with one end of the suture needle connected to a suture thread and the other end being a tip;

[0009] A needle driving assembly disposed in the main housing and including a driving member and an engaging member, the engaging member and the suture needle being in a separable engaging relationship, and the driving member acting on the engaged engaging member and suture needle to control the advancement of the suture needle;

[0010] Wherein, the engaging member is located on the outer periphery of the suture needle, and the engaging member engages with the outer peripheral surface of the suture needle.

[0011] According to an embodiment of the present application, an engaging portion is provided on the outer peripheral surface of the suture needle, and the engaging member engages with the engaging portion.

[0012] According to an embodiment of the present application, the engaging portion is formed by a groove provided on the surface of the suture needle.

[0013] According to an embodiment of the present application, the number of the engaging portions is multiple, and the multiple engaging portions are spaced apart along the axial direction of the suture needle.

[0014] According to an embodiment of the present application, two adjacent engaging portions respectively engage with the engaging member.

[0015] According to an embodiment of the present application, the interval between two adjacent engaging portions is not greater than 60°.

[0016] According to an embodiment of the present application, 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, the first surface engages with the engaging member, and the second surface is inclined towards the tail of the suture needle.

[0017] According to an embodiment of the present application, the inclination angle of the second surface is not less than 10°.

[0018] 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 including:

[0019] A stapler fixed to the distal end of the endoscope, the stapler including:

[0020] A main housing;

[0021] A suture needle slidably disposed in the main housing, with one end of the suture needle connected to a suture thread and the other end being a tip;

[0022] The needle insertion assembly is disposed in the main housing and includes a driving member and a engaging member. The engaging member and the suture needle are in a separable engaging relationship. The driving member acts on the engaged engaging member and the suture needle to control the advancement of the suture needle.

[0023] Wherein, the engaging member is located on the outer periphery of the suture needle, and the engaging member engages with the outer peripheral surface of the suture needle.

[0024] The operating handle is fixed to the operating end of the endoscope. The operating handle is connected to the needle insertion assembly of the stapler, and the operating handle controls the needle insertion assembly to control the advancement of the suture needle.

[0025] In a third aspect, an embodiment of the present application further provides a treatment device, including:

[0026] An endoscope;

[0027] A stapler fixed to the distal end of the endoscope. The stapler includes:

[0028] A main housing;

[0029] 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.

[0030] The needle insertion assembly is disposed in the main housing and includes a driving member and a engaging member. The engaging member and the suture needle are in a separable engaging relationship. The driving member acts on the engaged engaging member and the suture needle to control the advancement of the suture needle.

[0031] Wherein, the engaging member is located on the outer periphery of the suture needle, and the engaging member engages with the outer peripheral surface of the suture needle.

[0032] The operating handle is fixed to the operating end of the endoscope. The operating handle is connected to the needle insertion assembly of the stapler, and the operating handle controls the needle insertion assembly to control the advancement of the suture needle.

[0033] The above technical solutions of the present application have the following beneficial technical effects:

[0034] In the stapler, the treatment device having the stapler, and the treatment device of the embodiment of the present application, the engaging member is located on the outer periphery of the suture needle, and the engaging member engages with the outer peripheral surface of the suture needle. With such a setting, the acting point of the force can be far away from the center of the suture needle, so that the force arm can be increased. That is, when the torque remains unchanged, the acting force of the driving member on the suture needle 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 convenience of operation and the stability of the operation of the suture needle.

[0035] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specific preferred embodiments are given in conjunction with the accompanying drawings and are described in detail as follows. Description of the Drawings

[0036] Figure 1 A schematic structural diagram of a stapler provided in an embodiment of the present application is shown;

[0037] Figure 2 and Figure 3 Shown Figure 1 Schematic diagram of the structure from another perspective;

[0038] Figure 4 Shown Figure 1 Exploded view of

[0039] Figure 5 Shown Figure 1 Schematic diagram of the assembly of the suture needle and the needle insertion component;

[0040] Figure 6 Shown Figure 1 Schematic diagram of the structure of the suture needle;

[0041] Figure 7 Shown Figure 6 A partial enlarged view of

[0042] Figures 8 to 15 Shown Figure 1 Schematic diagram of the suture needle and the needle insertion assembly in different states during the actuation process;

[0043] Figure 16 A schematic structural diagram of another second housing provided in an embodiment of the present application is shown;

[0044] Figure 17 A schematic structural diagram of another second housing provided in an embodiment of the present application is shown;

[0045] Figure 18 A schematic structural diagram of another suture needle provided in an embodiment of the present application is shown;

[0046] Figure 19 Shown Figure 18 Schematic diagram of the structure from another perspective;

[0047] Figure 20 A schematic structural diagram of another stapler provided in an embodiment of the present application is shown;

[0048] Figure 21 and Figure 22 Shown Figure 20 Schematic diagram of the structure from another perspective;

[0049] Figure 23 Shown Figure 20 Schematic diagram of the assembly of the first gear and the second gear;

[0050] Figure 24 Shown Figure 20Schematic diagram of the cooperation between the first gear and the hook gripper;

[0051] Figure 25 Shows Figure 24 Schematic diagram after the first gear in [[]] rotates clockwise;

[0052] Figure 26 Schematic diagram of the structure of a control handle provided by an embodiment of the present application;

[0053] Figures 27 to 29 Shows Figure 26 Schematic diagram of the structure from another perspective;

[0054] Figure 30 Shows Figure 26 Exploded view of

[0055] Figure 31 Shows Figure 28 Schematic diagram of the assembly of the operating rope wheel and the front handle housing in [[]];

[0056] Figure 32 Shows Figure 28 Schematic diagram of the structure where the operating rope is connected to the operating rope wheel through an arc pin and a pin spring in [[]];

[0057] Figure 33 Shows Figure 28 Schematic diagram of the assembly of the operating rope, the arc pin, and the pin spring in [[]];

[0058] Figure 34 Shows Figure 28 Schematic diagram of the assembly of the pull rod, the rear handle housing, the clutch disc, and the operating rope wheel in [[]];

[0059] Figure 35 Shows Figure 34 Schematic diagram of the structure from another perspective;

[0060] Figure 36 Shows Figure 34 Exploded view of

[0061] Figure 37 Shows Figure 28 Schematic diagram of the assembly of the pull rod, the front handle housing, and the clutch disc in [[]];

[0062] Figure 38 Shows Figure 37 Schematic diagram of the structure from another perspective;

[0063] Figure 39 Shows Figure 26 Schematic diagram of the structure of a fixing structure of a control handle in [[]];

[0064] Figure 40 Shows Figure 26Schematic structural diagram of another fixing structure of the control handle;

[0065] Figure 41 shows Figure 26 Schematic structural diagram of yet another fixing structure of the control handle;

[0066] Figure 42 shows Figure 26 Schematic structural diagram of still another fixing structure of the control handle. Detailed implementation manner

[0067] 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 therewith. The stapler provided in this embodiment can not only be used in cooperation with an endoscope, but also can be used in cooperation with other devices capable of realizing steering guidance.

[0068] Embodiment 1

[0069] As Figures 1 to 15 shown, the stapler 1 provided in this embodiment is used to pierce and suture tissues for performing a surgical operation 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 the 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 engaging 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 resetting member, and an engaging member 123. The engaging member 123 is used to form a separable engaging 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 deforms the resetting member. When the driving member is released, the engaging relationship between the engaging member 123 and the suture needle 13 is released, and the resetting 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.

[0070] 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.

[0071] 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 arranged on the second housing 112. The shape and size of the connecting protrusion match those 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 thereto.

[0072] In some examples, in order to firmly connect the first housing 111 and the second housing 112, the connecting 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 thereto. 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 to say, the main housing 11 can be formed by an integral molding method. The integrally formed main housing 11 enables the connection between the first housing 111 and the second housing 112 to have a smooth transition, and there are no sharp corners at the connection, thereby greatly reducing the damage caused by the contact of the stapler 1 with the internal tissue.

[0073] In some examples, the outer surfaces of both the first housing 111 and the second housing 112 are smooth surfaces without sharp corners. Such an arrangement enables the stapler 1 to minimally affect the field of view at the tip of the endoscope, facilitating the suturing operation inside the body, and also reducing the damage caused by the contact with the internal tissue. Additionally, the outer surface being arc-shaped also avoids damaging the internal tissue by the edges of the housing during operation. However, this embodiment does not make any limitation thereto.

[0074] In some examples, there is a channel in the middle of the first housing 111. When used in cooperation with the endoscope, this channel enables the stapler 1 to be sleeved on the tip of the endoscope. However, this embodiment does not make any limitation thereto. In other embodiments, the first housing 111 may not have a channel, but instead, through other structures, such as a fixing band, the stapler 1 can be fixed to the tip of the endoscope.

[0075] Such as Figure 4 and Figure 16As 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 of 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. Specifically, 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 to enable the engaging member 123 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, so that the engaging member 123 can pass through the first slit and enter the first sliding groove 1121. However, this embodiment does not make any limitation thereto.

[0076] In some examples, the first sliding groove 1121 and the second sliding groove 1122 may 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 limitation thereto. In other embodiments, the first sliding groove 1121 and the second sliding groove 1122 may 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.

[0077] As Figure 4 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 of arc-shaped structures, and the first housing flap 112a and the second housing flap 112b are connected to each other and form the first sliding groove 1121 and the 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 are closed, 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, a first slit may also be formed between the first housing flap 112a and the second housing flap 112b when they are connected to each other. Such an arrangement facilitates simplifying the structure of the second housing 112 and is beneficial to improving the production and assembly efficiency of the second housing 112. And, 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, only by disassembling the first housing flap 112a and the second housing flap 112b can the disassembly and assembly of the suture needle 13 and the engaging member 123 be realized, which is beneficial to improving the convenience of adjusting the stapler 1. However, this embodiment does not make any limitation thereto.

[0078] As Figure 4As shown, in some examples, a third chute 1123 is further provided in the second housing 112. The third chute 1123 is arranged along the arc direction of the second housing 112. Specifically, the reset member is arranged in the third chute 1123. Further, in order for the engaging member 123 to act on the reset member, a second slit may be provided between the second chute 1122 and the third chute 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 in this regard. In other embodiments, the second housing 112 may not need to be provided with the third chute 1123, that is, the reset member may be arranged outside the second housing 112.

[0079] As Figure 4 shown, in some examples, the third chute 1123 may be formed between the first housing flap 112a and the second housing flap 112b. In this case, the third chute 1123 may be arranged overlapping the first chute 1121 and the second chute 1122 vertically. However, this embodiment does not make any limitation in this regard. In other embodiments, the third chute 1123 may be arranged in the first housing flap 112a or the second housing flap 112b. For example, the third chute 1123 is arranged in the second housing flap 112b, that is, the third chute 1123 is arranged on the periphery of the first chute 1121 and the second chute 1122.

[0080] As Figure 16 shown, in some examples, the third chute 1123 is distributed in a triangle with the first chute 1121 and the second chute 1122. With such an arrangement, the height of the second housing 112 can be reduced, which is beneficial to expanding the viewing field of the endoscope.

[0081] As Figure 17 shown, in some examples, the second housing 112 is provided with a third slit 1124, and the suture is used to pass through the third slit 1124 to connect the suture needle 13. Specifically, the third slit 1124 may be arranged on the inner peripheral surface of the second housing 112, that is, the third slit 1124 is arranged on the first housing flap 112a and arranged along the arc direction of the second housing 112. However, this embodiment does not make any limitation in this regard.

[0082] As Figure 4As 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 disposed at the first end of the second housing 112, and the second limiting block 1126 is disposed at the second end of the second housing 112. The first limiting block 1125 and the second limiting block 1126 function to close the second sliding groove 1122 and the third sliding groove 1123, so as to respectively limit the engaging member 123 and the reset member in the second sliding groove 1122 and the third sliding groove 1123. In specific settings, the first limiting block 1125 and the second limiting block 1126 may be separately provided from the second housing 112 or may be an integral structure. However, this embodiment does not make any limitation thereto.

[0083] As Figure 1 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 sliding groove 1122 and is communicated with the second sliding groove 1122. It is possible that the second limiting block 1126 blocks a part of the notch of the second sliding groove 1122 to form the wire threading hole 1127. In a specific implementation, the driving member may pass through the wire threading hole 1127 and be connected to the engaging member 123. Further, in order to reduce the friction force, the wire threading hole 1127 may be provided with a chamfer. However, this embodiment does not make any limitation thereto.

[0084] In some examples, in order to achieve the engagement between the suture needle 13 and the engaging member 123, the suture needle 13 may be provided with an engaging portion 131 to engage with the engaging member 123 by using the engaging portion 131.

[0085] In some examples, the engaging portion 131 may be formed by a depression 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 thereto. In other embodiments, the engaging portion 131 may also be formed by a protrusion provided on the surface of the suture needle 13.

[0086] In some examples, the depth of the groove is not greater than one-third of the diameter of the suture needle 13. Such a setting can avoid the reduction of the strength of the suture needle 13 due to the excessive depth of the groove, thereby causing the suture needle 13 to break. However, this embodiment does not make any limitation thereto.

[0087] As Figure 6 and Figure 7As 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 limit the backward movement of the suture needle 13 during suturing. Compared with arranging 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 assembly efficiency improvement. In addition, with the reduction of the number of parts, the resistance during the movement of the suture needle 13 will also decrease, thus facilitating the operation of the operator. However, this embodiment does not make any limitation thereto.

[0088] 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 to enable the engaging portion 131 to limit 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 with respect to the tail of the suture needle 13, barbs can also be formed.

[0089] In some examples, the inclination angle of the first surface 131a is not greater than 80°. With such a setting, it can be avoided that the barbs pierce the tissue due to being too sharp. However, this embodiment does not make any limitation thereto.

[0090] 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, enabling the suture needle 13 to insert the needle more smoothly and without damaging the tissue. However, this embodiment does not make any limitation thereto.

[0091] 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 reduced as much as possible, which is beneficial to reducing the operating force of the driving member. However, this embodiment does not make any limitation thereto.

[0092] In some examples, the first surface 131a and the second surface 131b can be planes or curved surfaces. 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 thereto.

[0093] 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 thereto.

[0094] In some examples, two adjacent engaging portions 131 are respectively engaged with the engaging member 123. With such an arrangement, the stress on 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 thereto.

[0095] 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 an arrangement, 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 sliding groove 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 thereto.

[0096] 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 sliding groove 1122 can be located on the outer periphery of the first sliding groove 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 an arrangement, 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 running stability of the suture needle 13. However, this embodiment does not make any limitation thereto.

[0097] In some examples, the engaging member 123 can change its shape to engage with or disengage from 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 is engaged with the suture needle 13, and in the second shape, the engaging member 123 is disengaged from the suture needle 13. However, this embodiment does not make any limitation thereto.

[0098] As Figure 4 and Figures 8 to 15As 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 withdrawing direction to release the engagement with 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 form of the engaging member 123 can be converted. When the engaging member 123 is in the first form, 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 withdrawing direction, the needle control swing tooth 1232 can rotate relative to the needle control shuttle 1231 to the second form, so that the engaging member 123 and the suture needle 13 are disengaged. In the above process, the engagement between the engaging member 123 and the suture needle 13 is released by rotating the needle control swing tooth 1232, which can reduce the back thrust generated when the engaging member 123 and the suture needle 13 are disengaged, thereby avoiding the suture needle 13 from retracting when the engaging member 123 is reset.

[0099] 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. Specifically, 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 disposed 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 limitation on this.

[0100] As Figure 4 and Figure 11 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 suture needle 13 advances. Specifically, the limiting portion 1234 is disposed 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 suture needle 13. However, this embodiment does not make any limitation on this.

[0101] As Figure 11As 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. When specifically arranged, 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 action 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.

[0102] 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. When specifically arranged, 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 extrusion part 1237 arranged on the needle control shuttle 1231. When the needle control shuttle 1231 moves in the needle inserting direction, the extrusion part 1237 can squeeze the compression spring 122 to make it compressed. 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.

[0103] As Figure 4 and Figure 8 As shown, in some examples, a connecting part 1236 is arranged on the needle control shuttle 1231. The connecting part 1236 is located on the side of the needle control shuttle 1231 facing the tip of the sewing needle 13, and the needle control shuttle 1231 is connected to the operating rope 121 through the connecting part 1236. When specifically arranged, the connecting part 1236 can be a circular ring or a semi-circular ring arranged on the needle control shuttle 1231. However, this embodiment does not make any limitation on this.

[0104] As Figure 4As shown, in some examples, the needle control swing tooth 1232 is provided with a pointed tooth portion 1232a, and 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.

[0105] In some examples, the needle control swing tooth 1232 engages with the outer peripheral surface of the suture needle 13. That is to say, the needle control swing tooth 1232 engages with the engaging portion 131 on the outer peripheral surface of the suture needle 13.

[0106] In some examples, the number of the needle control swing teeth 1232 can be multiple. The multiple needle control swing teeth 1232 are distributed at intervals 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.

[0107] In some examples, the driving member can adopt 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, an 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, so as to realize 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.

[0108] As Figure 1 shown, in some examples, the operating rope 121 can enter the second chute 1122 from the threading hole 1127 provided at the end of the second chute 1122 and be connected to the engaging member 12). Such a setting enables the operating rope 121 to pull the engaging member 123 in accordance with the travel of the suture needle 13, which can reduce the friction between the engaging member 123 and the housing, thereby facilitating the reduction of the operating resistance of the operating rope 121. Moreover, since the friction 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 rope 121 is connected to the engaging member 123 after entering the second chute 1122, when the operating rope 121 is tightened or released (that is, when the engaging member 123 moves in the second chute 1122), the possibility that the part of the operating rope 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 rope 121 is wound due to excessive exposure can be reduced.

[0109] To more clearly illustrate how the stapler 1 provided in the embodiments of the present application performs the stitching action on the target stitching tissue, the following will be described in conjunction with Figures 8 - 15 is described. 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.

[0110] As Figure 8 shown, at the initial position, the operating rope 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.

[0111] As Figure 9 shown, when the operating rope 121 is pulled, the operating rope 121 pulls the needle control shuttle 1231 to move clockwise in the second chute 1122. Due to the 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 forward. That is, it can no longer pull the operating rope 121. At the same time, the tip of the suture needle 13 exits the needle through the right end of the first chute 1121, passes through the target stitching tissue, and then the tip of the suture needle 13 enters the left end of the first chute 1121, completing one needle insertion.

[0112] As Figure 10 shown, when the operating rope 121 is released, the acting force that causes the operating rope 121 to move clockwise on the needle control shuttle 1231 disappears. The compression spring 122 provides a counterclockwise acting force to the needle control shuttle 1231, and the compression spring 122 causes the needle control shuttle 1231 to retreat counterclockwise. At the same time, when the two needle control swing teeth 1232 receive the reaction force from the suture needle 13, they rotate counterclockwise relative to the needle control shuttle 1231, and the two metal elastic pieces 1235 flip up counterclockwise until the needle control shuttle 1231 moves away from the tail of the suture needle 13. Then, the reaction force from the suture needle 13 disappears, and the metal elastic pieces 1235 recover clockwise and drive the needle control swing teeth 1232 to reset.

[0113] As Figure 11As shown, the compression spring 122 continues to provide a force for the needle control shuttle 1231 to move counterclockwise. The compression spring 122 causes the needle control shuttle 1231 to continue to retreat counterclockwise until the needle control shuttle 1231 reaches the tip position of the suture needle 13. At the same time, the compression spring 122 is close to full recovery. The two needle control swing teeth 1232 rest on the needle body at the tip position of the suture needle 13, and at the same time, the metal elastic piece 1235 flips slightly counterclockwise.

[0114] As Figure 12 shown, the needle control shuttle reset member continues to provide a force for the needle control shuttle 1231 to move counterclockwise. The needle control shuttle reset member causes the needle control shuttle 1231 to continue to retreat counterclockwise 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. Under the action of the metal elastic piece 1235, the two needle control swing teeth 1232 are respectively engaged in two adjacent grooves at the tip position of the suture needle 13, and a linkage relationship is formed again between the needle control swing teeth 1232 and the suture needle 13.

[0115] As Figure 13 shown, the operating rope 121 is pulled again. The operating rope 121 pulls the needle control shuttle 1231 again to move it 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 continues to drive the suture needle 13 to move forward clockwise, and the part of the suture needle 13 that penetrates the target suture 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.

[0116] As Figure 14 shown, the operating rope 121 is continuously pulled. The operating rope 121 continuously pulls 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 suture needle 13, the needle control shuttle 1231 continues to drive the suture needle 13 to move forward clockwise, and the part of the suture needle 13 that penetrates the target suture tissue (or enters 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 suture needle 13 returns to the initial position, completing one needle exit.

[0117] As Figure 15As shown, the operating cord 121 is released again, the acting force on the needle control shuttle 1231 in the clockwise direction exerted by the operating cord 121 disappears, the compression spring 122 provides a force for the needle control shuttle 1231 to move in the counterclockwise direction, and the compression spring 122 causes the needle control shuttle 1231 to retreat in the counterclockwise direction until the needle control shuttle 1231 moves to the left end of the second sliding groove 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.

[0118] The above two operations of pulling and releasing the operating cord 121 achieve one-time needle insertion and needle withdrawal (i.e., one-time suturing) of the sewing needle 13. Repeating the above operations can perform suturing of the target suturing tissue or knotting of the suture. However, the number of times of pulling the cord required for one-time suturing in this embodiment is not limited in any way. It should be understood that in other embodiments, the number of times of pulling the cord required for one-time suturing can be adjusted by adjusting the compression displacement of the reset member and the groove interval on the sewing needle 13.

[0119] In some examples, the action of operating the operating cord 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.

[0120] As Figures shown, in some examples, the control handle 2 includes a handle housing 21, an operating cord wheel 22, a clutch disc 23, and a pull rod 24. The operating cord wheel 22 is arranged inside the handle housing 21, and the driving member on the stapler 1 is an operating cord and is connected to the operating cord wheel 22. The clutch disc 23 is detachably arranged on one side of the operating cord wheel 22, and a toothed ring 231 engaged with the operating cord wheel 22 is provided on the side of the clutch disc 23 close to the operating cord wheel 22. The pull rod 24 is connected to the clutch disc 23 and is resetably connected to the handle housing 21.

[0121] As ​ and ​ shown, in some examples, the pull rod 24 is resetably connected to the handle housing 21 through a tension spring 25. However, this embodiment does not make any limitation in this regard. In other embodiments, the pull rod can also be provided with a torsion spring connected to the handle housing to achieve reset.

[0122] In the operating handle 2 provided in this embodiment, the clutch disc 23 and the operating rope wheel 22 are of a separable structure. When it is necessary to drive the sewing needle 13 on the stapler 1 to move forward, the clutch disc 23 is connected to the operating rope wheel 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 wheel 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 can no longer be pulled. At this time, the clutch disc 23 and the operating rope wheel 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 and retracts. 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 wheel 22 after resetting.

[0123] As ​ shown, in some examples, the handle housing 21 includes a front housing 211, a middle housing 212, and a rear housing 213 arranged in sequence. The pull rod 24 is connected to the rear housing 213 through a tension spring 25. The rear shaft of the clutch disc 23 passes through the middle housing 212 and is sleeved on the pull rod 24. Four compression springs 26 are arranged between the clutch disc 23 and the middle housing 212. The front side of the clutch disc 23 meshes with the operating rope wheel 22, and the front shaft of the clutch disc 23 passes through the operating rope wheel 22 and the front housing 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 wheel 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 housing 211, and the clutch disc 23 is separated from the operating rope wheel 22 axially, 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 on the number of compression springs and the separation method of the clutch disc.

[0124] The setting of the clutch disc 23 not only realizes the rotation of the operating rope wheel 22 following the pull rod 24, but also limits the operating rope wheel 22 to prevent the operating rope wheel 22 from rotating counterclockwise; furthermore, the clutch disc 23 and the operating rope wheel 22 are meshed by matching of the teeth. Making full use of the mechanical principle, the mechanical torque is increased and the pull rod 2 is more labor-saving. Preferably, the operating rope wheel 22 has a groove ring 224 corresponding to the tooth ring 231, and the teeth on the tooth ring 231 are inserted into the grooves on the groove ring 224 during meshing. However, this embodiment does not make any limitation on this. In other embodiments, the operating rope wheel may also be provided with protruding teeth that mesh with the tooth ring. In this embodiment, as ​As shown in the figure, the control handle 2 further includes an operating rope fixing member 27 disposed within the operating rope pulley 22. The operating rope 121, serving as the driving member, is connected to the operating rope pulley 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 interior of the operating rope pulley 22 through the pin spring 272. The operating rope pulley 22 has a side hole 221 and a pin chute 223. The driving member extends into the operating rope pulley 22 through the side hole 221 and is sleeved on the arc-shaped pin 271. This arrangement ensures that the driving member does not detach from the operating rope pulley 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 inserted into the operating rope pulley 22 through the side hole 221 of the operating rope pulley 22. 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. The front end of the arc-shaped pin 271 passes through the fixing ring at the front end of the operating rope pulley 22. To facilitate viewing the fixing state of the driving member, in this embodiment, the operating rope pulley 22 further has an observation hole 222. The arrangement of the operating rope fixing member 27 causes the driving member to change along the arc-shaped side of the operating rope pulley within the control handle 2, greatly reducing the resistance of the driving member during operation. It is 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.

[0125] Furthermore, the control handle 2 further includes a guiding cylindrical pin 28 disposed on one side of the operating rope pulley 22 and used to guide 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.

[0126] After installation, since different models of endoscopes are matched, the length of the driving member reserved outside the operating rope pulley 22 may vary, 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 from the operating rope pulley 22, and then rotate the operating rope pulley 22 counterclockwise to tighten the excess driving member into the operating rope pulley 22. After tightening, release the clutch disc 23, and the clutch disc 23 engages with the operating rope pulley 22.

[0127] In some examples, both the front shell 211 and the rear shell 213 are square structures. Compared with a circular shell, the square shell 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 shell 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 operation resistance, which conforms to the ergonomics of the hand, is not likely to induce hand tendon sheath or ligament or muscle injuries of the operator, makes the operation more relaxed, the suture more accurate, the operation more rapid, the continuous holding longer, and the finger fatigue slower. However, this embodiment does not make any limitation on the structure of the handle shell.

[0128] 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. Optionally, the fixing structure is disposed 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.

[0129] In some examples, the fixing structure can be fixed to the operating end of the endoscope by means of sleeving and / or screwing. Compared with the prior art in which the fixing is achieved by using a cable tie, such an arrangement can simplify the operation steps of fixing the control handle 2 and facilitate the operation of the operator.

[0130] 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 ​ shown, a rear shell 213 having a snap cap 2131 is shown, and the snap cap 2131 can be sleeved on the forceps port of the endoscope. As ​ shown, a rear shell 213 having a snap cap 2131 and a clamping ring 2132 is shown. While the snap cap 2131 is sleeved on the forceps port of the endoscope, the clamping ring 2132 can be sleeved outside the handle of the endoscope. As ​ shown, a rear shell 213 having a snap cap 2131 and a nut 2133 is shown. While the snap cap 2131 is sleeved on the forceps port of the endoscope, the nut 2133 can be screwed to the snap cap 2131 to make the sleeving of the snap cap 2131 more secure. As ​ shown, a rear shell 213 having 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 sleeved 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.

[0131] In some examples, the fixing structure is detachably disposed on the control handle 2. Such an arrangement can replace different types of fixing structures to connect and fix to the endoscope through different types of fixing structures.

[0132] It should be noted that the above control handle 2 can also be applicable to other operating instruments that rely on the use of an endoscope. For example, a ligator, a snare, a closure clip, etc. These operating instruments all include an operating rope for controlling their operation. 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.

[0133] On the other hand, the present embodiment further provides a treatment device, which includes the above-mentioned stapler 1 and the control handle 2. This treatment device is used in cooperation with an endoscope. The stapler 1 is fixed to the distal 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.

[0134] In the present embodiment, the treatment device may further include a hook forceps. The hook forceps performs an action of clamping tissue or pulling a suture at the distal end of the endoscope, and finally can clamp both ends of the suture to complete the knotting action of the suture. The hook forceps can enter through the forceps channel of the endoscope itself or through the forceps channel outside the endoscope, and no limitation is made here. In actual use, two hook forceps can be inserted simultaneously through two forceps channels for work, or only one hook forceps can be used for 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.

[0135] On the other hand, the present embodiment further 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 the control handle 2.

[0136] Embodiment Two

[0137] This embodiment is basically the same as Embodiment One and its variations, except that: the structure of the main housing 11' is different.

[0138] As ​ 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. The third housing 113' is rotatably arranged on the first housing 111' and is used for sleeving on the distal end of the endoscope. With such an arrangement, the first housing 111' can rotate relative to the third housing 113', so that the opening direction of the second housing 112' can be adjusted.

[0139] In some examples, the first housing 111' is provided with a first gear 1112', and 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. One of the first gear 1112' and the second gear 1131' can be rotated by a hook forceps passing 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 a hook forceps 3' passing 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 passing through the third housing 113', the hook forceps 3' 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 this setting, the orientation of the C-shaped opening of the second housing 112' can be arbitrarily switched by 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.

[0140] 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 this 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.

[0141] 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. In the meshed state, the axis of the first gear 1112' is perpendicular to the axis of the second gear 1131'. With this setting, the size of the housing can be reduced, facilitating surgical operation. However, this embodiment does not make specific limitations in this regard.

[0142] In some examples, the first gear 1112' is disposed on the connecting handle 1111' of the first housing 111'. Specifically, the first gear 1112' may 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 beneficial to simplifying the structural design and reducing the production cost. However, this embodiment does not make specific limitations in this regard.

[0143] In some examples, chamfers are provided at the corners of 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, so that the internal tissues can naturally avoid when coming into contact with the gears. However, this embodiment does not make specific limitations in this regard.

[0144] In some examples, the first housing 111' may 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' may be an arc-shaped structure that partially surrounds or semi-surrounds the third housing 113'.

[0145] As ​ 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' may be provided with convex ribs 1113', and the outer surface of the third housing 113' may 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.

[0146] In some examples, there may be multiple sets of nested structures between the first housing 111' and the third housing 113'. For example, as ​ 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', and the third housing 113' is provided with two annular grooves 1132', and the two annular grooves 1132' cooperate with the two convex ribs 1113' respectively. 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 groove 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, no additional connecting parts or connection features need to be provided, which is beneficial to simplifying the structure of the housing.

[0147] As ​ 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, thereby affecting suturing.

[0148] 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.

[0149] 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'.

[0150] 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'.

[0151] 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.

[0152] 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 can easily think of changes or substitutions within the technical scope disclosed in this application, and all of them should 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 in the main housing and including a driving member and a engaging member, the engaging member and the suture needle being in a separable engaging relationship, the driving member acting on the engaged engaging member and the suture needle to control the advancement of the suture needle; Wherein, the engaging member is located on the outer periphery of the suture needle, and the engaging member engages with the outer peripheral surface of the suture needle.

2. The stapler according to claim 1, wherein, An engaging portion is provided on the outer peripheral surface of the suture needle, and the engaging member engages with the engaging portion.

3. The stapler according to claim 2, wherein, The engaging portion is formed by a groove provided on the surface of the suture needle.

4. The stapler according to claim 2, characterized in that, The number of the engaging portions is plural, and the plural engaging portions are spaced apart along the axial direction of the suture needle.

5. The stapler according to claim 2, characterized in that, Two adjacent engaging portions respectively engage with the engaging member.

6. The stapler according to claim 5, wherein The interval between two adjacent engaging portions is not greater than 60°.

7. The stapler according to claim 2, wherein, 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, the first surface engages with the engaging member, and the second surface inclines towards the tail of the suture needle.

8. The stapler according to claim 7, wherein, The inclination angle of the second surface is not less than 10°.

9. A treatment device, used in cooperation with an endoscope, characterized in that, The treatment device includes: A stapler fixed to the distal end of the endoscope, the stapler including: 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 in the main housing and including a driving member and a engaging member, the engaging member and the suture needle being in a separable engaging relationship, the driving member acting on the engaged engaging member and the suture needle to control the advancement of the suture needle; Wherein, the engaging member is located on the outer periphery of the suture needle, and the engaging member engages with the outer peripheral surface 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 controlling 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 distal end of the endoscope, the stapler including: 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 in the main housing and including a driving member and a engaging member, the engaging member and the suture needle being in a separable engaging relationship, the driving member acting on the engaged engaging member and the suture needle to control the advancement of the suture needle; Wherein, the engaging member is located on the outer periphery of the suture needle, and the engaging member engages with the outer peripheral surface 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 controlling the needle driving assembly to control the advancement of the suture needle.

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