Loading and resetting structure of laparoscopic cutting stapler assembly

Abstract

The present invention relates to a loading and resetting structure of a laparoscope cutting stapler assembly. The laparoscope cutting stapler assembly includes a connecting rod assembly, a staple magazine assembly and a staple support assembly. The connecting rod assembly is cylindrical and includes a lower fixing element and an upper fixing element detachably connected to the other side of the lower fixing element. The end of the connecting rod assembly away from the staple magazine assembly is provided with a connecting head connected to the laparoscope body. The upper peripheral surface of the connecting rod assembly near the connecting head is provided with an arc groove, and the height of the arc groove is ≤1.1mm. The loading and resetting structure includes a rotating element and an elastic resetting element. The rotating element is arranged on the arc groove, and one end of the elastic resetting element is fixed on the rotating element, and the other end is fixed on the arc groove. Compared with the prior art, a loading and resetting mechanism is added, and there is no need for manual operation to reset the rotating element to the assembly position and then connect it to the laparoscope body, which reduces the process of manual resetting and checking whether it is reset; and eliminates the safety hazards caused by misoperation or mistouch.

Description

Technical Field

[0001] The invention relates to the technical field of laparoscopic cutting staplers, in particular to a loading and resetting structure of a laparoscopic cutting stapler assembly. Background Art

[0002] The laparoscopic cutting stapler and disposable stapler are suitable for the resection, transection and anastomosis of tissues in abdominal, obstetrics and gynecology, pediatric and thoracic surgical operations, and can also be used for the resection and transection of liver parenchyma, liver blood vessels and gallbladder ducts. The laparoscopic cutting stapler is composed of a laparoscopic cutting stapler assembly and a laparoscopic body. One end of the laparoscopic cutting stapler assembly has a connector that cooperates with the laparoscopic body. A rotating part is provided near the connector. The rotating part has two functions: first, it is convenient to connect with the laparoscopic body when it is rotated to the assembly position, and it can prevent the laparoscopic cutting stapler assembly from being abnormally loaded (the cutting knife assembly has been ejected), thereby causing the laparoscopic cutting stapler assembly to be unable to be normally unloaded from the laparoscopic body after firing; second, when the rotating element is not in the original assembly position, the laparoscopic cutting stapler assembly is in an unprepared state and cannot be loaded.

[0003] The current rotating elements can rotate freely, so they need to be manually turned to the original assembly position during assembly, which is troublesome and prone to errors or mis-triggers. Moreover, once mis-triggered or mis-operated, the misaligned state of the laparoscopic cutting stapler assembly cannot be automatically reset, and the laparoscopic cutting stapler assembly in the wrong state will not be able to be loaded and used normally when it is handed over to the user. However, when manually rotated to the assembly position, the position of the cutting knife assembly may exceed the ready state by a certain distance, and is no longer in the ready state. The laparoscopic cutting stapler assembly is abnormally loaded, resulting in the laparoscopic cutting stapler assembly after firing being unable to be unloaded from the laparoscopic instrument normally, posing a major safety hazard. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a loading and resetting structure for a laparoscope cutting stapler assembly.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a loading and resetting structure of a laparoscopic cutting stapler assembly, the laparoscopic cutting stapler assembly comprising a connecting rod assembly and a staple magazine assembly and a staple support assembly connected to one end of the connecting rod assembly, the connecting rod assembly is cylindrical, and comprises a lower fixing element and an upper fixing element detachably connected to the other side of the lower fixing element, the end of the connecting rod assembly away from the staple magazine assembly is provided with a connecting head connected to the laparoscope body, the upper peripheral surface of the connecting rod assembly close to the connecting head is provided with an arc groove, the height of the arc groove is ≤1.1mm, the loading and resetting structure comprises a rotating element and an elastic resetting element, the rotating element is arranged on the arc groove, one end of the elastic resetting element is fixed on the rotating element, and the other end thereof is fixed on the arc groove.

[0006] It is further defined that an arc-shaped protrusion and a first connecting block are provided in the middle of the arc-shaped groove, and the first connecting block is located on one end of the arc-shaped protrusion.

[0007] It is further defined that an arc-shaped hole for accommodating the elastic reset element is provided in the middle of the arc-shaped protrusion.

[0008] It is further defined that a groove matching with the arc-shaped protrusion is provided in the middle of the rotating element, and a second connecting block is provided on the rotating element at one end of the groove.

[0009] It is further defined that one end of the elastic reset element is connected to the first connection block, and the other end thereof is connected to the second connection block.

[0010] It is further defined that the height of the elastic reset element is ≤1.1 mm, and the elastic reset element comprises a tension spring, a compression spring, a torsion spring or an elastic member made of a polymer material.

[0011] It is further defined that a sleeve is disposed outside the connecting rod assembly, and the connecting head extends out of the sleeve.

[0012] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention adds a loading and resetting mechanism, which eliminates the need for manual operation to reset the rotating element to the assembly position and then connect it to the laparoscope body, reducing the steps of manual resetting and checking whether it is reset, saving time and effort; the elastic resetting element can ensure that the rotating element is always in the assembly position, and under the influence of its elastic force, ensure that the laparoscope cutting stapler assembly is always in a fully prepared state, eliminating the safety hazard of similar laparoscope cutting stapler assembly products without a reset mechanism, which may cause the rotating element to be out of the loading position due to misoperation or mis-touch, thereby failing to load the laparoscope cutting stapler assembly normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1It is an assembly schematic diagram of the present invention.

[0015] Figure 2 It is a schematic diagram of the structure of the present invention after the sleeve is removed.

[0016] Figure 3 yes Figure 1 Enlarged view of point I in the middle.

[0017] Figure 4 It is a schematic diagram of the structure of the rotating element in the present invention.

[0018] Figure 5 yes Figure 4 Top view of the .

[0019] In the figure: 1. connecting rod assembly, 2. nail magazine assembly, 3. nail support assembly, 4. rotating element, 5. elastic reset element, 6. sleeve, 11. lower fixing element, 12. upper fixing element, 121. connecting head, 122. arc groove, 123. arc protrusion, 124. first connecting block, 1231. arc hole, 41. groove, 42. second connecting block. DETAILED DESCRIPTION

[0020] The present invention will now be further described in conjunction with the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0021] Embodiment 1

[0022] like Figures 1-2 As shown, a loading and resetting structure of a laparoscopic cutting stapler assembly of the present embodiment, the laparoscopic cutting stapler assembly includes a connecting rod assembly 1 and a staple magazine assembly 2 and a staple seat assembly 3 connected to one end of the connecting rod assembly 1, the connecting rod assembly 1 is cylindrical, including a lower fixing element 11 and an upper fixing element 12 detachably connected to the upper part of the lower fixing element 11, the upper fixing element 12 is provided with a connecting head 121 connected to the laparoscope body at one end away from the staple magazine assembly 2, a sleeve 6 is provided outside the connecting rod assembly 1, the connecting head 121 extends out of the sleeve 6, an arc groove 122 is provided on the circumferential surface of the upper fixing element 12 close to the connecting head 121, the height of the arc groove 122 is ≤1.1mm, the loading and resetting structure includes a rotating element 4 and an elastic resetting element 5, the rotating element 4 is arranged on the arc groove 122, one end of the elastic resetting element 5 is fixed on the rotating element 4, and the other end thereof is fixed on the arc groove 122.

[0023] In addition, the arc groove 122 can also be set on the lower fixed element 11, one end of the elastic reset element 5 is fixed on the rotating element 4, and the other end can be fixed on the upper fixed element 12 or the lower fixed element 11, so as to realize automatic reset of the rotating element 4 after rotation.

[0024] like Figure 3 As shown, an arc-shaped protrusion 123 and a first connecting block 124 are arranged in the middle of the arc-shaped groove 122, and the first connecting block 124 is located on one end of the arc-shaped protrusion 123. An arc-shaped hole 1231 for accommodating the elastic reset element 5 is opened in the middle of the arc-shaped protrusion 123.

[0025] like Figures 4-5 As shown, a groove 41 is provided in the middle of the rotating element 4 to match the arc-shaped protrusion 123, and a second connecting block 42 is provided on the rotating element 4 at one end of the groove 41. One end of the elastic reset element 5 is connected to the first connecting block 124, and the other end is connected to the second connecting block 42.

[0026] The height of the elastic reset element 5 is ≤1.1 mm. The elastic reset element 5 includes a tension spring, a compression spring, a torsion spring or a polymer elastic member, but is not limited to the above.

[0027] During specific installation, the upper fixed element 12 and the lower fixed element 11 are respectively connected to a connecting sleeve through a steering joint, the nail seat assembly 3 is fixedly connected to the connecting sleeve, the nail magazine assembly 2 and the nail seat assembly 3 are rotatably connected, the sleeve 6 is fixed on the lower fixed element 11, and the rotating element 4 is arranged on the arc groove 122, the groove 41 cooperates with the arc protrusion 123, one end of the elastic reset element 5 is connected to the first connecting block 124 in the middle of the arc groove 122, and the other end thereof is connected to the second connecting block 42 on the rotating element 4. The assembled rotating element 4 is concentric with the common axis of the columnar connecting rod assembly 1 and can rotate along this axis within a certain angle.

[0028] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A loading and resetting structure of a laparoscope cutting stapler assembly, the laparoscope cutting stapler assembly comprising a connecting rod assembly and a staple cartridge assembly and a staple support assembly connected to one end of the connecting rod assembly, the connecting rod assembly being cylindrical, comprising a lower fixing element and an upper fixing element detachably connected to the other side of the lower fixing element, the connecting rod assembly being provided with a connecting head connected to a laparoscope body at one end away from the staple cartridge assembly, an arc groove being provided on the circumferential surface of the upper edge of the connecting rod assembly near the connecting head, the height of the arc groove being ≤1.1mm, characterized in that: The loading and resetting structure comprises a rotating element and an elastic resetting element, wherein the rotating element is arranged on the arc groove, one end of the elastic resetting element is fixed on the rotating element, and the other end thereof is fixed on the arc groove; An arc-shaped convex block and a first connecting block are arranged in the middle of the arc-shaped groove, and the first connecting block is located on one end of the arc-shaped convex block; an arc-shaped hole for accommodating an elastic reset element is arranged in the middle of the arc-shaped convex block; A groove matching the arc-shaped convex block is provided in the middle of the rotating element, and a second connecting block is provided on the rotating element at one end of the groove; One end of the elastic reset element is connected to the first connection block, and the other end is connected to the second connection block; the height of the elastic reset element is ≤1.1mm, and the elastic reset element includes a tension spring, a compression spring, a torsion spring or a polymer elastic member; A sleeve is provided outside the connecting rod assembly, and the connecting head extends out of the sleeve; During assembly, the upper fixed element and the lower fixed element are respectively connected to a connecting sleeve through a steering joint, the nail support assembly is fixedly connected to the connecting sleeve, the nail magazine assembly and the nail support assembly are rotatably connected, the sleeve is fixed to the lower fixed element, the rotating element is arranged on the arc groove, the groove cooperates with the arc protrusion, one end of the elastic reset element is connected to the first connecting block in the middle of the arc groove, and the other end is connected to the second connecting block on the rotating element. The assembled rotating element is concentric with the common axis of the columnar connecting rod assembly and can rotate along this axis within a certain angle.

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