Suturing device for endoscope

Abstract

The utility model discloses a suturing device for an endoscope, which belongs to the technical field of medical instruments and comprises a main body matched with an arc-shaped suture needle at the front end, a turntable rotatably arranged in the main body, a rack which is slidably arranged on one side of the turntable along the width direction and meshed with a gear on the turntable, and the rack penetrates through the rear end of the main body. An elastic piece is arranged between the rack and the body in the sliding direction of the rack and located on one side of the rotary disc in the height direction, a strip-shaped groove is formed in the rotary disc, and a connecting rod is arranged between the strip-shaped groove and the arc-shaped needle groove. The shifting part moves along the arc-shaped needle groove and is used for shifting the arc-shaped sewing needle, the limiting pin is inserted into the strip-shaped groove in a relatively sliding mode, a guide groove is formed in the position, between the shifting part and the limiting pin, of the connecting rod, and a fixing pin sliding relative to the guide groove is fixedly arranged in the main body. The suturing device for the endoscope is compact in structure, the overall length of the suturing device is shortened, the suturing device can enter the digestive tract easily, and design is reasonable and ingenious.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a suturing device for an endoscope. Background Art

[0002] Endoscopic suturing, as the main treatment for gastrointestinal defects, plays an increasingly important role in the field of minimally invasive surgery. The suturing device used in conjunction with the endoscope, as the main part of the suturing, plays a decisive role in the quality of the suturing. When in use, the suturing device is delivered to the wound site of the digestive tract through the endoscope. Therefore, the length of the suturing device will directly affect whether the suturing device can smoothly enter the digestive tract. The existing suturing device is relatively long. When entering the digestive tract, especially at the turning position, the suturing device will scrape against the wall of the digestive tract cavity, thereby damaging the cavity and increasing the patient's pain. At the same time, the longer suturing device is not conducive to medical staff quickly delivering the suturing device to the target position, which prolongs the operation time. Utility Model Content

[0003] The technical problem to be solved by the present invention is that in the prior art, the length of the suturing device is too long, which is not conducive to entering the digestive tract. Based on this, the present invention provides an endoscopic suturing device with a compact structure and effectively controllable length.

[0004] The cam is secured to the rear of the slide and is adapted to engage the guide rails of the slide, the guide rails being secured to the rear of the slide and into engagement with the guide rails of the slide.

[0005] Furthermore, the main body includes a basic shell and a pressure cover, the pressure cover matching cover is arranged on one side of the basic shell, the arc-shaped needle groove is opened on the pressure cover, and a limiting groove is opened at the front end of the basic shell corresponding to the arc-shaped needle groove, and one end of the toggle part can be slidably connected in the limiting groove.

[0006] Furthermore, the central axis of the fixing pin and the rotation center of the turntable are arranged at the same height in the height direction.

[0007] Furthermore, a turntable accommodating groove is recessed on the surface of the base shell facing the pressure cover, a gear accommodating groove is recessed on the bottom wall of the turntable accommodating groove, the turntable is accommodated in the turntable accommodating groove, and the gear is accommodated in the gear accommodating groove.

[0008] Furthermore, a sliding groove and an elastic member receiving groove are provided on the surface of the base shell facing the gland, the rack is slidably arranged in the sliding groove along the length direction, and the elastic member is received in the elastic member receiving groove.

[0009] Furthermore, a supporting block is protruded from the front end of the rack toward one side of the elastic member receiving groove, one end of the elastic member elastically supports the supporting block, and the other end of the elastic member elastically supports the rear side wall of the elastic member receiving groove.

[0010] Furthermore, a positioning groove is provided on the surface of the pressure cover facing the basic shell, corresponding to the elastic member receiving groove, and the bottom of the abutting block abuts against the groove wall of the positioning groove.

[0011] Furthermore, an arc-shaped groove is formed in a depression on the surface of the gland away from the basic shell.

[0012] Furthermore, a needle slot cover plate is installed on the pressure cover, and the needle slot cover plate is arranged on the arc-shaped needle slot.

[0013] The beneficial effects of the present invention are as follows: in the endoscopic suturing device of the present invention, the rack is arranged on one side of the turntable along the width direction, and the elastic member is arranged on one side of the turntable along the height direction. As a result, the rack and the elastic member are both located on the circumference of the turntable, resulting in a compact structure, thereby shortening the overall length of the suturing device and facilitating insertion of the suturing device into the digestive tract. Furthermore, during the movement of the arcuate suturing needle driven by the connecting rod, the connecting rod is in a deflected and swinging state, ensuring that the suturing action can be achieved within the limited space within the main body, resulting in a reasonable and ingenious design. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 It is a three-dimensional diagram of the endoscopic suturing device of the present invention;

[0016] Figure 2 yes Figure 1 A three-dimensional view of the endoscopic suturing device from another perspective;

[0017] Figure 3 yes Figure 1 The endoscopic suturing device shown is a three-dimensional view with the gland and needle slot cover omitted;

[0018] Figure 4 yes Figure 3 A perspective view of the base housing of the endoscopic suturing device shown;

[0019] Figure 5 yes Figure 1 An exploded view of the endoscopic suturing device shown;

[0020] Figure 6 yes Figure 1 An exploded view of the endoscopic suturing device from another perspective is shown.

[0021] In the figure: 1. main body, 101. arc-shaped needle groove, 11. basic shell, 111. limiting groove, 112. through hole, 113. turntable accommodating groove, 114. gear accommodating groove, 115. slide groove, 116. elastic member accommodating groove, 117. mounting column, 12. pressure cover, 121. elastic stopper, 122. positioning groove, 123. mounting hole, 124. arc-shaped groove, 13. needle groove cover plate, 2. turntable, 21. gear, 201. strip groove, 3. rack, 301. connecting hole, 31. supporting block, 311. positioning column, 4. elastic member, 5. connecting rod, 51. toggle part, 52. limiting pin, 501. guide groove, 6. fixing pin DETAILED DESCRIPTION

[0022] The present invention will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, which only illustrates the basic structure of the present invention in a schematic manner, and therefore only shows the components related to the present invention.

[0023] See also Figures 1-6 The utility model provides an endoscopic suturing device, which is used to cooperate with an endoscope and extend into the digestive tract together to suture the surgical wound. The endoscopic suturing device includes a main body 1, the front end of the main body 1 is provided with an arc-shaped needle groove 101 for adapting to the arc-shaped suture needle, a turntable 2 is rotatably provided in the main body 1, and a rack 3 is slidably provided on one side of the turntable 2 and meshed with the gear 21 on the turntable 2, one end of the rack 3 passes through the rear end of the main body 1, and an elastic member 4 is retractably provided between the rack 3 and the main body 1 along the sliding direction of the rack 3, a strip groove 201 is provided on the turntable 2, and the strip groove 210 is arranged along the radial direction of the turntable 2, and the strip groove 201 is in contact with the gear 21 on the turntable 2. A connecting rod 5 is provided between the arc-shaped needle groove 101, and a toggle part 51 and a limit pin 52 are respectively provided at both ends of the connecting rod 5. The toggle part 51 slides along the arc-shaped needle groove 101 to toggle the arc-shaped sewing needle to move along the arc-shaped needle groove 101. The limit pin 52 is inserted into the strip groove 201 and can slide relative to the strip groove 201. A guide groove 501 is provided on the connecting rod 5 between the toggle part 51 and the limit pin 52, and a fixing pin 6 is fixed in the main body 1. The fixing pin 6 passes through the guide groove 501 and can slide relative to the guide groove 501.

[0024] The endoscopic suturing device of the present invention is generally a flat structure. In order to facilitate the description of the positional relationship between the various components, it is stipulated here that the direction extending from the front end to the rear end of the main body 1 is the length direction of the suturing device (see the attached Figure 3 The X direction in the figure), and the flatter direction perpendicular to the length direction is the width direction of the stapler (see the attached figure). Figure 3 The Y direction in the figure), the direction perpendicular to both the length and width directions is the height direction of the stapler (see the attached Figure 3 Based on this, the rack 3 is actually arranged on one side of the turntable 2 along the width direction, and the rack 3 moves along the length direction. At the same time, the elastic member 4 is arranged on one side of the turntable 2 along the height direction.

[0025] See also Figure 2 A connecting hole 301 is provided at the rear end of the rack 3, which is used to connect to the traction rope. By pulling the traction rope backward, the medical staff can drive the rack 3 to move from front to back, thereby driving the turntable 2 to rotate, and then driving the connecting rod 5 to move, and further driving the arc-shaped suture needle to move, so as to penetrate and suture the wound edge to be sutured.

[0026] During the specific operation, the medical staff pulls the traction rope backward, driving the rack 3 to move backward. During this process, the elastic member 4 is compressed, and at the same time, the rack 3 engages with the gear 21, thereby driving the turntable 2 to rotate. At this time, since the toggle portion 51 is restricted in the arc-shaped needle groove 101, the turntable 2 will drive the connecting rod 5 to move. During the movement of the connecting rod 5, the fixing pin 6 slides relative to the guide groove 501, and the limit pin 52 slides relative to the strip groove 201. Driven by the connecting rod 5, the toggle portion 51 at the front end of the connecting rod 5 pushes the arc-shaped suture needle to move along the arc-shaped needle groove 101, thereby suturing the wound edge to be sutured. After the above operation is completed, the medical staff removes the backward pulling force on the rack 3. At this time, the elastic member 4 is reset, and the rack 3 moves forward under the elastic force of the elastic member 4, thereby causing the turntable 2 to rotate in the opposite direction, thereby driving the connecting rod 5 and the toggle portion 51 thereon to move to the initial position. Such reciprocating motion can realize the continuous suturing action of the arc-shaped suture needle.

[0027] In the endoscopic suturing device of the present invention, a rack 3 is disposed on one side of a turntable 2 along its width, and an elastic member 4 is disposed on one side of the turntable 2 along its height. This arrangement allows both the rack 3 and the elastic member 4 to be positioned around the turntable 2, resulting in a compact structure that shortens the overall length of the suturing device and facilitates insertion into the digestive tract. Furthermore, while the connecting rod 5 drives the arcuate needle, the connecting rod 5 is in a deflected, swinging rotational state, ensuring that the suturing action can be achieved within the limited space within the main body 1. This design is both rational and ingenious.

[0028] See also Figure 4-Figure 6The main body 1 includes a base shell 11 and a pressure cover 12. The pressure cover 12 is arranged on one side of the base shell 11. The turntable 2, the rack 3, the elastic member 4 and the connecting rod 5 are accommodated in the space formed by the base shell 11 and the pressure cover 12. The arc-shaped needle groove 101 is provided on the pressure cover 12. The front end of the base shell 11 is provided with a limiting groove 111 at the position corresponding to the arc-shaped needle groove 101. The limiting groove 111 has an arc-shaped structure. The middle part of the toggle part 51 is fixedly connected to one end of the connecting rod 5. One end of the toggle part 51 is connected in the limiting groove 111 and can slide along the limiting groove 111. The other end of the toggle part 51 extends into the arc-shaped needle groove 101 to push the arc-shaped sewing needle. The limiting groove 111 can limit the moving path of the toggle part 51, thereby ensuring that the end of the toggle part 51 used to push the arc-shaped sewing needle can move along the arc-shaped needle groove 101.

[0029] The structure and coordination of the arcuate suture needle and the toggle portion 51 for pushing the arcuate suture needle in the present invention are identical to those of the arcuate suture needle and toggle portion described in Chinese patent publication number CN116784909A (patent title: "Medical Surgical Stapler Device"), and are not further described herein. Furthermore, in this embodiment, an elastic stopper 121 is further mounted on the gland 12 on one side of the arcuate needle groove 101. The structure and function of the elastic stopper 121 are identical to those of the elastic stopper in the aforementioned cited patent (publication number CN116784909A), both of which are for preventing the arcuate suture needle from moving in the opposite direction, and are not further described herein.

[0030] Furthermore, a needle slot cover plate 13 is mounted on the pressure cover 12, and the needle slot cover plate 13 is covered on the arcuate needle slot 101, thereby preventing the arcuate suture needle from detaching from the arcuate needle slot 101, so that the arcuate suture needle can only move along the arcuate path of the arcuate needle slot 101. The connection between the needle slot cover plate 13 and the pressure cover 12 is a detachable connection such as a snap connection, which is not limited here.

[0031] The central axis of the fixing pin 6 is arranged at the same height as the rotation center of the turntable 2. As a preferred embodiment, a through hole 112 is formed in the base housing 11, and the central axis of the turntable 2 is rotatably mounted within the through hole 112. A turntable receiving groove 113 is formed in a recessed manner on the surface of the base housing 11 facing the gland 12. A gear receiving groove 114 is formed in a recessed manner on the bottom wall of the turntable receiving groove 113. The turntable 2 is received in the turntable receiving groove 113. The gear 21 is coaxially arranged with the turntable 2 and received in the gear receiving groove 114. This makes the structure more compact, which helps to reduce the width of the stapler.

[0032] The base housing 11 further defines a slide groove 115 and an elastic member receiving groove 116 on the surface facing the gland 12. The rack 3 is slidably disposed within the slide groove 115 along its length, and the elastic member 4 is received within the elastic member receiving groove 116. In this embodiment, a support block 31 is protruded from the front end of the rack 3, facing one side of the elastic member receiving groove 116. One end of the elastic member 4 elastically supports the support block 31, while the other end of the elastic member 4 elastically supports the rear sidewall of the elastic member receiving groove 116.

[0033] Furthermore, a positioning groove 122 is provided on the surface of the pressure cover 12 facing the basic shell 11 corresponding to the elastic member receiving groove 116. When the pressure cover 12 and the basic shell 11 are connected in place, the bottom of the supporting block 31 is supported by the groove wall of the positioning groove 112. In this way, during the sliding process of the rack 3, the positioning groove 112 can position the supporting block 31, which helps to stabilize the movement of the rack 3.

[0034] In this embodiment, the elastic member 4 is a spring. To position the end of the elastic member 4 and prevent it from separating from the abutting block 31, a positioning post 311 is provided on the abutting block 31. One end of the spring is sleeved on the positioning post 311. It is understood that in other embodiments, the elastic member 4 may also be a rigid and elastic element such as a stainless steel shrapnel or a copper shrapnel, and this is not limited here.

[0035] In this embodiment, a mounting post 117 is protruding from the surface of the base shell 11 facing the pressure cover 12, and a mounting hole 123 is opened on the surface of the pressure cover 12. When the base shell 11 and the pressure cover 12 are connected, it is only necessary to fix the mounting post 117 in the mounting hole 123, and the connection is simple and convenient.

[0036] Also, see Figure 2 An arc-shaped groove 124 is formed on the surface of the pressure cover 12 away from the base shell 11. The opening of the arc-shaped groove 124 reduces the width of the stapler. When in use, the endoscope can be fixed at the arc-shaped groove 124, thereby reducing the size of the overall structure after the endoscope and the stapler are connected, which is conducive to smoothly delivering the stapler into the cavity.

[0037] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the scope of the present invention. The technical scope of this utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An endoscopic suturing device, comprising a main body having a front end with an arcuate needle groove adapted to accommodate an arcuate suture needle, characterized in that: A turntable is rotatably provided in the main body, and a rack is slidably provided on one side of the turntable along the width direction and meshed with the gear on the turntable, the rack passes through the rear end of the main body, and an elastic member is provided between the rack and the main body along the sliding direction of the rack, and the elastic member is located on one side of the turntable along the height direction, and a strip groove is provided on the turntable, and a connecting rod is provided between the strip groove and the arc needle groove, and both ends of the connecting rod are respectively provided with a toggle part for moving along the arc needle groove for toggling the arc sewing needle and a limit pin which is relatively slidably inserted into the strip groove, a guide groove is provided on the connecting rod between the toggle part and the limit pin, and a fixing pin which slides relative to the guide groove is fixedly provided in the main body.

2. The endoscopic suturing device according to claim 1, wherein: The main body includes a basic shell and a pressure cover, the pressure cover matching cover is arranged on one side of the basic shell, the arc-shaped needle groove is opened on the pressure cover, and a limiting groove is opened at the front end of the basic shell corresponding to the arc-shaped needle groove, and one end of the toggle part can be slidably connected in the limiting groove.

3. The endoscopic suturing device according to claim 1, wherein: The central axis of the fixing pin and the rotation center of the turntable are arranged at the same height in the height direction.

4. The endoscopic suturing device according to claim 2, wherein: A turntable accommodating groove is recessed on the surface of the base shell facing the pressure cover, a gear accommodating groove is recessed on the bottom wall of the turntable accommodating groove, the turntable is accommodated in the turntable accommodating groove, and the gear is accommodated in the gear accommodating groove.

5. The endoscopic suturing device according to claim 4, wherein: A sliding groove and an elastic member receiving groove are provided on the surface of the base shell facing the pressure cover. The rack is slidably arranged in the sliding groove along the length direction, and the elastic member is received in the elastic member receiving groove.

6. The endoscopic suturing device according to claim 5, wherein: A supporting block is protruded from the front end of the rack toward one side of the elastic member receiving groove, one end of the elastic member elastically supports the supporting block, and the other end of the elastic member elastically supports the rear side wall of the elastic member receiving groove.

7. The endoscopic suturing device according to claim 6, wherein: A positioning groove is provided on the surface of the pressure cover facing the basic shell corresponding to the elastic member receiving groove, and the bottom of the abutting block abuts against the groove wall of the positioning groove.

8. The endoscopic suturing device according to claim 2, wherein: An arc-shaped groove is formed on the surface of the gland away from the basic shell.

9. The endoscopic suturing device according to claim 2, wherein: A needle slot cover plate is mounted on the pressure cover, and the needle slot cover plate is arranged to cover the arc-shaped needle slot.

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