Locking mechanism for endoscope anastomat support and support cover

Abstract

The utility model relates to a locking mechanism for an endoscopic anastomat support and a support cover, which comprises a fixing component and a positioning component, the fixing component comprises a locking screw, a guide ring and a fixing ring, the guide ring is arranged on the outer wall of the support cover, the fixing ring is arranged on the outer wall of the support, and the sides, close to each other, of the fixing ring and the guide ring are attached to each other. The inner circumferential wall of the guide ring is provided with first internal threads and forms a first threaded hole, the inner circumferential wall of the fixing ring is provided with second internal threads and forms a second threaded hole, the second threaded hole and the first threaded hole are communicated and coaxial, the first internal threads and the second internal threads are continuous, and the locking screw penetrates into the second threaded hole after penetrating through the first threaded hole. The locking screw is in threaded connection with the first threaded hole and the second threaded hole. The positioning assembly is used for positioning the assembly between the support and the support cover. The bracket has the effect of improving the connection firmness between the bracket and the bracket cover.

Description

Technical Field

[0001] The utility model relates to the field of laparoscopic stapler accessories, in particular to a locking mechanism for a laparoscopic stapler bracket and a bracket cover. Background Art

[0002] Laparoscopic staplers (laparoscopic cutting staplers and disposable stapler boxes) are one of the important instruments for laparoscopic surgery. They replace traditional manual suturing and use titanium staples to separate or staple tissues. They are easy and quick to operate, greatly shortening the operation time. Laparoscopic staplers make it easier to perform anastomosis that is difficult to perform manually in narrow surgical fields and deep areas. They are accurate, firm and reliable, and significantly reduce the incidence of anastomotic leakage. The instrument is suitable for the resection, transection and suturing of tissues in open or endoscopic surgery in abdominal surgery, gynecology, pediatrics and thoracic surgery.

[0003] In the related art, the laparoscopic stapler includes a bracket, a bracket cover, a main drive assembly, a rotating assembly and a swing angle assembly. The main drive assembly, the rotating assembly and the swing angle assembly are installed on the bracket. The main drive assembly is used to drive the actuator to close and fire, the rotating assembly is used to drive the actuator to rotate 360 ​​degrees, and the swing angle assembly is used to drive the actuator to swing left and right. The bracket cover is connected to the bracket by fixing the column foot and the hole to protect the main drive assembly, the rotating assembly and the swing angle assembly. The bracket cover is provided with a connecting column, and the bracket is provided with a connecting hole for the connecting column to be inserted. During assembly, the connecting column is inserted into the connecting hole to achieve fixation between the bracket and the bracket cover.

[0004] With regard to the assembly and fixing method between the above-mentioned bracket and the bracket cover, the inventor believes that during the closing and firing process of the actuator of the laparoscopic stapler, the mating parts between the bracket and the bracket cover may easily become loose or even cracked, causing the laparoscopic stapler to be unable to be used normally. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a locking mechanism for a laparoscopic stapler bracket and a bracket cover.

[0006] The present application provides a locking mechanism for a laparoscopic stapler stent and a stent cover using the following technical solution:

[0007] A locking mechanism for a laparoscopic stapler bracket and a bracket cover, comprising a fixing assembly and a positioning assembly, the fixing assembly comprising a locking screw, a guide ring and a fixing ring, the guide ring being arranged on the outer wall of the bracket cover, the fixing ring being arranged on the outer wall of the bracket, the fixing ring and the guide ring being fitted on their respective sides close to each other, the inner circumferential wall of the guide ring being provided with an internal thread one and forming a threaded hole one, the inner circumferential wall of the fixing ring being provided with an internal thread two and forming a threaded hole two, the threaded hole two being connected to the threaded hole one and being coaxial, the internal thread one and the internal thread two being continuous, the locking screw passing through the threaded hole one and then passing into the threaded hole two, the locking screw being threadedly connected to the threaded hole one and the threaded hole two; the positioning assembly is used for positioning the assembly between the bracket and the bracket cover.

[0008] Preferably, three groups of the fixing components are provided, wherein two groups of the fixing components are symmetrically arranged on both sides of the width direction of the bracket, and the remaining group of the fixing components is arranged on one side of the bracket away from the rotating shaft of the swing angle component.

[0009] Preferably, a guide groove 1 is formed at one end of the guide ring away from the fixing ring, the guide groove 1 is connected to a threaded hole 1, and the guide groove 1 decreases toward the center along the direction from away from the fixing ring to close to the fixing ring.

[0010] Preferably, a second guide groove is provided at one end of the fixing ring close to the guide ring, the second guide groove is connected to the second threaded hole, and the second guide groove decreases toward the center along the direction from close to the guide ring to away from the guide ring.

[0011] Preferably, the positioning assembly comprises a positioning ring and a positioning column, the positioning ring is arranged on the outer wall of the bracket, the positioning column is arranged on a side of the bracket cover close to the bracket, and the positioning column penetrates into the positioning ring.

[0012] Preferably, two groups of the positioning components are provided, and the two groups of the positioning components are symmetrically arranged on both sides of the width direction of the bracket, and the positioning components and the fixing components are staggered.

[0013] Preferably, a limiting column is provided on one surface of the bracket cover close to the bracket, and a limiting groove for the limiting column to pass through is opened on one surface of the bracket close to the bracket cover, a accommodating chamber is provided in the limiting column, a V-shaped spring sheet is provided in the accommodating chamber, the bottom end of the V-shaped spring sheet is connected to the inner wall of the accommodating chamber, a convex column is provided at each end of the V-shaped spring sheet, a groove for the convex column to pass through is opened on the inner side wall of the limiting groove, and a clearance groove for the convex column to pass through is opened on the side wall of the accommodating chamber.

[0014] Preferably, the boss and the groove are interference fit, and the boss is elastic.

[0015] Preferably, the limiting column is square, the four sides of the limiting column are arranged in an arc shape, and one end of the limiting column close to the limiting groove is also arranged in an arc shape.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. When assembling the bracket and the bracket cover, insert the positioning column into the positioning ring so that the guide ring and the fixing ring are aligned, and then insert the locking screw through the threaded hole 1 and then into the threaded hole 2. After the locking screw is tightened, the bracket and the bracket cover are locked and fixed, which improves the firmness of the connection between the bracket and the bracket cover. During the closing and firing process of the actuator of the laparoscopic stapler, the cooperation between the bracket and the bracket cover is not easy to loosen or even crack;

[0018] 2. After the bracket and the bracket cover are fitted and fixed, the limiting column penetrates into the limiting groove. Under the action of the V-shaped spring piece, the convex column is inserted into the groove and has an interference fit with the groove, further improving the firmness of the connection between the bracket and the bracket cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a laparoscopic stapler support and a locking mechanism for a support cover located on a laparoscopic stapler in an embodiment of the present application.

[0020] Figure 2 It is a schematic diagram of the exploded structure used to illustrate the fixing component and the positioning component in the embodiment of the present application.

[0021] Figure 3 It is a schematic diagram of the exploded structure used to show guide groove 1 and guide groove 2 in the embodiment of the present application.

[0022] Figure 4 It is a schematic diagram of the exploded structure used to display the limiting columns and limiting grooves in the embodiment of the present application.

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure used to show that the limiting column is located in the limiting groove in the embodiment of the present application.

[0024] Explanation of the reference numerals in the accompanying drawings: 1. bracket; 2. bracket cover; 21. mounting hole; 3. fixing assembly; 31. locking screw; 32. guide ring; 321. threaded hole one; 322. guide groove one; 33. fixing ring; 331. threaded hole two; 332. guide groove two; 4. positioning assembly; 41. positioning ring; 42. positioning column; 5. limiting column; 51. accommodating chamber; 511. making way groove; 52. V-shaped spring piece; 53. boss; 6. limiting groove; 61. groove. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-5 This application is described in further detail.

[0026] Embodiment 1

[0027] Embodiment 1 of the present application discloses a locking mechanism for a laparoscopic stapler bracket and a bracket cover.

[0028] Reference Figure 1-3 The locking mechanism for the laparoscopic stapler bracket and the bracket cover includes a fixing assembly 3 and a positioning assembly 4. The fixing assembly 3 includes a locking screw 31, a guide ring 32 and a fixing ring 33. The guide ring 32 is integrally formed on the outer wall of the bracket cover 2, and the radial part of the guide ring 32 is embedded in the outer wall of the bracket 1. The fixing ring 33 is fixedly installed on the outer wall of the bracket 1. The outer wall of the bracket cover 2 is provided with a mounting hole 21 for the fixing ring 33 to be installed. The mounting hole 21 runs through both sides of the thickness direction of the bracket cover 2. The fixing ring 33 and the guide ring 32 are fitted on their respective sides, and the outer diameter of the fixing ring 33 is consistent with the outer diameter of the guide ring 32.

[0029] The inner circumferential wall of the guide ring 32 is provided with an internal thread 1 to form a threaded hole 1 321, the inner circumferential wall of the fixing ring 33 is provided with an internal thread 2 to form a threaded hole 2 331, the threaded hole 2 331 is connected with the threaded hole 1 321 and is coaxial, the internal thread 1 and the internal thread 2 are continuous, the locking screw 31 passes through the threaded hole 1 321 and then passes into the threaded hole 2 331, and the locking screw 31 is threadedly connected with the threaded hole 1 321 and the threaded hole 2 331.

[0030] In order to improve the locking performance, three groups of fixing components 3 are arranged, two groups of fixing components 3 are symmetrically arranged on both sides of the width direction of the bracket 1, and the remaining group of fixing components 3 is arranged on one side of the width direction of the bracket 1 and is located at the upper part of the bracket 1.

[0031] A guide groove 322 is formed at one end of the guide ring 32 away from the fixing ring 33. The guide groove 322 is connected to the threaded hole 321. The guide groove 322 decreases toward the center along the direction away from the fixing ring 33 to the direction close to the fixing ring 33, so as to facilitate the locking screw 31 to penetrate the guide ring 32.

[0032] A second guide groove 332 is formed at one end of the fixing ring 33 close to the guide ring 32 . The second guide groove 332 is connected to the second threaded hole 331 . The second guide groove 332 decreases toward the center from approaching the guide ring 32 to away from the guide ring 32 , so as to facilitate the locking screw 31 to penetrate into the fixing ring 33 .

[0033] The positioning assembly 4 is used to position the assembly between the bracket 1 and the bracket cover 2. The positioning assembly 4 includes a positioning ring 41 and a positioning column 42. The positioning ring 41 is integrally formed on the outer wall of the bracket 1, and a part of the positioning ring 41 is embedded in the outer wall of the bracket 1. The positioning column 42 is arranged on the side of the bracket cover 2 close to the bracket 1, and the positioning column 42 penetrates into the positioning ring 41. Two groups of positioning assemblies 4 are arranged, and the two groups of positioning assemblies 4 are symmetrically arranged on both sides of the width direction of the bracket 1, and the positioning assembly 4 and the fixing assembly 3 are staggered.

[0034] Through the cooperation of the positioning column 42 and the positioning ring 41, when assembling the bracket 1 and the bracket cover 2, the positioning column 42 is inserted into the positioning ring 41. Since the positioning assembly 4 is symmetrically arranged on both sides of the width direction of the bracket 1, after the positioning column 42 is inserted into the positioning ring 41, the position of the bracket 1 and the bracket cover 2 can be positioned, which provides convenience for the subsequent installation of the locking screws 31.

[0035] When assembling the bracket 1 and the bracket cover 2, the positioning column 42 is inserted into the hole of the positioning ring 41 so that the guide ring 32 and the fixing ring 33 are aligned, and then the locking screw 31 is inserted into the threaded hole 1 321 and then into the threaded hole 2 331. After the locking screw 31 is tightened, the bracket 1 and the bracket cover 2 are locked and fixed, thereby improving the firmness of the connection between the bracket 1 and the bracket cover 2. During the closing and firing process of the actuator of the laparoscopic stapler, the fit between the bracket 1 and the bracket cover 2 is not easy to loosen or even crack.

[0036] The implementation principle of the locking mechanism for a laparoscopic stapler support and a support cover in the embodiment of the present application is:

[0037] When assembling the bracket 1 and the bracket cover 2, insert the positioning column 42 into the positioning ring 41 so that the guide ring 32 and the fixing ring 33 are aligned, and then insert the locking screw 31 through the threaded hole 1 321 and then into the threaded hole 2 331. After tightening the locking screw 31, the bracket 1 and the bracket cover 2 are locked and fixed.

[0038] Embodiment 2

[0039] The difference between the second embodiment of the present application and the first embodiment is that, referring to Figure 4-5A limiting column 5 is provided on the side of the bracket cover 2 close to the bracket 1. The limiting column 5 is provided on both sides of the width direction of the bracket cover 2. A limiting groove 6 for the limiting column 5 to penetrate is provided on the side of the bracket 1 close to the bracket cover 2. A accommodating chamber 51 is provided in the limiting column 5. A V-shaped spring piece 52 is provided in the accommodating chamber 51. The bottom end of the V-shaped spring piece 52 is connected to the inner wall of the accommodating chamber 51. A boss 53 is provided at each end of the V-shaped spring piece 52. A groove 61 for the boss 53 to penetrate is provided on the inner side wall of the limiting groove 6. A clearance groove 511 for the boss 53 to penetrate is provided on the side wall of the accommodating chamber 51. The clearance groove 511 is vertically provided. The boss 53 can slide up and down in the clearance groove 511. The end of the boss 53 away from the V-shaped spring piece 52 is arranged in an arc shape. The boss 53 is interference fit with the groove 61. The boss 53 is elastic. In this embodiment, the boss 53 is made of rubber material.

[0040] The limiting column 5 is square in shape, and the four sides of the limiting column 5 are arranged in an arc shape. One end of the limiting column 5 close to the limiting groove 6 is also arranged in an arc shape, so that the limiting column 5 can easily penetrate into the limiting groove 6.

[0041] After the bracket 1 and the bracket cover 2 are fitted and fixed, the limiting column 5 passes through the limiting groove 6. Under the action of the V-shaped spring piece 52, the protruding column 53 is inserted into the groove 61 and has an interference fit with the groove 61, further improving the firmness of the connection between the bracket 1 and the bracket cover 2.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A locking mechanism for a laparoscopic stapler stent and a stent cover, characterized in that: The invention comprises a fixing assembly (3) and a positioning assembly (4), wherein the fixing assembly (3) comprises a locking screw (31), a guide ring (32) and a fixing ring (33), wherein the guide ring (32) is arranged on the outer wall of the bracket cover, and the fixing ring (33) is arranged on the outer wall of the bracket (1), wherein the fixing ring (33) and the guide ring (32) are fitted on their respective sides close to each other, and the inner peripheral wall of the guide ring (32) is provided with an internal thread and forms a threaded hole (321), and the inner peripheral wall of the fixing ring (33) is provided with a threaded hole (321). The peripheral wall is provided with a second internal thread and forms a second threaded hole (331); the second threaded hole (331) is connected to the first threaded hole (321) and is coaxial; the first internal thread and the second internal thread are continuous; the locking screw (31) passes through the first threaded hole (321) and then enters the second threaded hole (331); the locking screw (31) is threadedly connected to the first threaded hole (321) and the second threaded hole (331); the positioning assembly (4) is used to position the assembly between the bracket (1) and the bracket cover.

2. The locking mechanism for a laparoscopic stapler stent and a stent cover according to claim 1, characterized in that: The fixing components (3) are arranged in three groups, of which two groups of the fixing components (3) are symmetrically arranged on both sides of the bracket (1) in the width direction, and the remaining group of the fixing components (3) is arranged on a side of the bracket (1) away from the rotation axis of the swing angle component.

3. The locking mechanism for a laparoscopic stapler stent and a stent cover according to claim 1, characterized in that: A guide groove 1 (322) is formed at one end of the guide ring (32) away from the fixing ring (33); the guide groove 1 (322) is connected to the threaded hole 1 (321); and the guide groove 1 (322) decreases toward the center in a direction from away from the fixing ring (33) to close to the fixing ring (33).

4. The locking mechanism for a laparoscopic stapler stent and a stent cover according to claim 1, characterized in that: A second guide groove (332) is formed at one end of the fixing ring (33) close to the guide ring (32); the second guide groove (332) is connected to the second threaded hole (331); and the second guide groove (332) decreases toward the center in a direction from approaching the guide ring (32) to away from the guide ring (32).

5. The locking mechanism for a laparoscopic stapler stent and a stent cover according to claim 1, characterized in that: The positioning assembly (4) comprises a positioning ring (41) and a positioning column (42); the positioning ring (41) is arranged on the outer wall of the bracket (1); the positioning column (42) is arranged on a side of the bracket cover close to the bracket (1); and the positioning column (42) penetrates into the positioning ring (41).

6. The locking mechanism for a laparoscopic stapler stent and a stent cover according to claim 1, characterized in that: The positioning components (4) are arranged in two groups, and the two groups of the positioning components (4) are symmetrically arranged on both sides of the width direction of the bracket (1), and the positioning components (4) and the fixing components (3) are arranged in a staggered manner.

7. The locking mechanism for a laparoscopic stapler stent and a stent cover according to claim 1, characterized in that: A limiting column (5) is arranged on one side of the bracket cover close to the bracket (1); a limiting groove (6) for the limiting column (5) to penetrate is provided on one side of the bracket (1) close to the bracket cover; a receiving chamber (51) is provided in the limiting column (5); a V-shaped spring sheet (52) is provided in the receiving chamber (51); the bottom end of the V-shaped spring sheet (52) is connected to the inner wall of the receiving chamber (51); a convex column (53) is provided at each of the two ends of the V-shaped spring sheet (52); a groove (61) for the convex column (53) to penetrate is provided on the inner side wall of the limiting groove (6); and a clearance groove (511) for the convex column (53) to penetrate is provided on the side wall of the receiving chamber (51).

8. The locking mechanism for a laparoscopic stapler stent and a stent cover according to claim 7, characterized in that: The convex column (53) and the groove (61) are interference fit, and the convex column (53) is elastic.

9. The locking mechanism for a laparoscopic stapler stent and a stent cover according to claim 7, characterized in that: The limiting column (5) is square in shape, and the four sides of the limiting column (5) are arranged in an arc shape. The end of the limiting column (5) close to the limiting groove (6) is also arranged in an arc shape.

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