One-time percussion protection structure for endoscope anastomat assembly

Abstract

The utility model discloses a primary percussion protection structure for an endoscope anastomat component, which comprises a nail anvil component and an anastomat body, the nail anvil component is mounted on the anastomat body, a track for a cutting knife in the anastomat body to move is arranged in the nail anvil component, and a protection component for limiting the cutting knife to be used for the first time and used for the second time after the cutting knife is withdrawn is arranged on the track. The protection assembly is arranged on the side close to the connection side of the nail anvil assembly and the device body and located in the nail anvil assembly, and meanwhile an observation hole is formed in the tail of a track where the cutting knife moves in the nail anvil assembly and used for observing the current track state. And meanwhile, an operator can visually observe spare and accessory parts in the protection assembly on the tail part of the rail through the observation hole, and judges that the cutting knife is triggered.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to a primary firing protection structure for a laparoscopic stapler assembly. Background Art

[0002] The primary firing protection structure of traditional primary cutting stapler assemblies usually adopts a method of preventing the cutter from firing, that is, after the anvil assembly is installed on the instrument body, the cutter is locked and cannot be fired again. Such a structure can meet the use requirements, but it is impossible to distinguish between the unused anvil assembly and the used anvil assembly from the appearance, and it is impossible to intuitively judge whether the anvil assembly has been used. Therefore, in view of this problem, this application proposes a solution. Summary of the Invention

[0003] Utility Model Objective: The objective of the utility model is to provide a primary firing protection structure for a laparoscopic stapler assembly, which can prevent the cutter from firing a second time while facilitating the operator to intuitively observe whether the anvil assembly has been used.

[0004] Technical Solution: A primary firing protection structure for a laparoscopic stapler assembly described in the utility model includes an anvil assembly and an instrument body. The anvil assembly is installed on the instrument body. An orbit for the movement of the cutter in the instrument body is provided inside the anvil assembly. A protection component for restricting the cutter from being used a second time after the first use and being retracted is provided on the orbit. The protection component is arranged on the side close to the connection between the anvil assembly and the instrument body and is located inside the anvil assembly;

[0005] An observation hole is provided at the tail of the orbit for the movement of the cutter in the anvil assembly to observe the current state of the orbit.

[0006] The protection component includes a long elastic sheet, a pressing block, and a pressing elastic sheet. The long elastic sheet is fixed on the two side guides of the orbit. The pressing block straddles the two side guides of the orbit and is arranged above the long elastic sheet. The pressing elastic sheet is arranged above the pressing block.

[0007] Preferably, the opening of the long elastic sheet faces the side of the instrument body.

[0008] The opening facing the side of the instrument body facilitates the long elastic sheet to limit the top push block of the cutter when it bounces up.

[0009] Preferably, a groove having the same shape as the long elastic sheet is provided on the guide rail where the long elastic sheet is arranged. When the long elastic sheet is arranged in the groove and in a compressed state, the top end face of the upper elastic sheet is flush with the guide rail.

[0010] The setting that the long elastic sheet is flush with the guide rail in the compressed state can ensure that the push block at the top of the cutter can move smoothly on the guide rail and will not hinder the firing of the cutter.

[0011] Preferably, the opening height of the long elastic piece when it bounces up is higher than the pushing block at the top of the cutter.

[0012] Preferably, the pressing block is slidably connected to the long elastic piece, and a guiding block is arranged at the bottom of the pressing block, and the guiding block is located between the two side rails of the track.

[0013] The pressing block is arranged to compact the long elastic piece, and the guiding block guides the pressing block to move along the track.

[0014] Preferably, the pressing elastic piece is fixed above the pressing block and moves along with the pressing block.

[0015] The arrangement of the pressing elastic piece facilitates that when the whole protection component is installed inside the anvil component, after the top of the pressing elastic piece is pressed by the object at the top of the anvil component, it presses the pressing block, and further compresses the long elastic piece through the pressing block.

[0016] Preferably, the pressing block is arranged on the long elastic piece, and when the pressing elastic piece is fixed on the top of the pressing block and placed inside the nail magazine component, the height of the pressing block is flush with the pushing block at the top of the cutter.

[0017] The height of the pressing block being flush with the pushing block at the top of the cutter can facilitate the cutter to push the pressing block to move along the track together when firing.

[0018] Beneficial effects: Compared with the prior art, the present utility model has the following advantages:

[0019] In this application, after the cutter is pushed to the bottom of the track after the first firing, when the reset cutter fires for the second time, it will be limited by the bounced long elastic piece to prevent the second firing, completing the prevention of the second firing of the cutter. At the same time, since the pressing block is pushed to the tail of the track by the cutter, the operator can directly observe the presence of the pressing block and the pressing elastic piece on the tail of the track through the observation hole to judge whether the cutter has fired. Description of the Drawings

[0020] Figure 1 It is a three-dimensional structure diagram of the present utility model after removing the outer shell of the anvil component.

[0021] Figure 2 It is a top view of the present utility model after removing the outer shell of the anvil component.

[0022] Figure 3 It is a front sectional view of the present utility model after removing the outer shell of the anvil component.

[0023] Figure 4 It is an enlarged view of the connection between the anvil component and the body in the front sectional view of the present utility model after removing the outer shell of the anvil component.

[0024] Figure 5 It is a three-dimensional structure diagram of the protection component and the cutter in the present utility model.

[0025] Figure 6 This is a three-dimensional structure diagram of the present utility model.

[0026] Wherein: 1. anvil assembly; 2. body; 3. cutter; 31. push block; 4. track; 41. guide rail; 5. protection assembly; 51. long elastic sheet; 52. pressing block; 53. pressing elastic sheet; 54. guiding block; 6. observation hole. Specific embodiments

[0027] The technical solution of the present utility model will be further described below with reference to the accompanying drawings.

[0028] See the attached Figures 1 to 6 Figure. A one-shot protection structure for a laparoscopic stapler assembly shown in the present utility model includes an anvil assembly 1 and a body 2. The anvil assembly 1 is installed on the body 2. An internal track 4 for the movement of the cutter 3 in the body 2 is provided in the anvil assembly 1. A protection assembly 5 for restricting the secondary use of the cutter 3 after its first use and retraction is provided on the track 4. The protection assembly 5 is provided on the side close to the connection between the anvil assembly 1 and the body 2 and is located inside the anvil assembly 1.

[0029] In this embodiment, the protection assembly 5 includes a long elastic sheet 51, a pressing block 52 and a pressing elastic sheet 53. The long elastic sheet 51 is fixed on the two guide rails 41 of the track 4. The pressing block 52 straddles the two guide rails 51 of the track 4 and is arranged above the long elastic sheet 51. The pressing elastic sheet 53 is arranged above the pressing block 52.

[0030] In this embodiment, the opening of the long elastic sheet 51 faces the side of the body 2, which is convenient for the long elastic sheet 51 to limit the top push block 31 of the cutter 3 when it bounces up.

[0031] In this embodiment, a groove 42 having the same shape as the long elastic sheet 51 is provided on the guide rail 41 where the long elastic sheet 51 is arranged. When the long elastic sheet 51 is arranged in the groove 42 and in a compressed state, the top end face of the upper elastic sheet 51 is flush with the guide rail 41. The arrangement of the long elastic sheet 51 being flush with the guide rail 41 in the compressed state can ensure that the push block 31 at the top of the cutter 3 can move smoothly on the guide rail 41 and will not hinder the normal firing of the cutter 3.

[0032] In this embodiment, the opening height of the long elastic sheet 51 when it bounces up is higher than the top push block 31 of the cutter 3. Such an arrangement is also to ensure that the top push block 31 of the cutter 3 can be limited when the cutter 3 is fired for the second time, thereby completing the limitation of the cutter 3.

[0033] In this embodiment, the pressing block 52 is slidably connected to the long elastic piece 51. A guiding block 54 is provided at the bottom of the pressing block 52. The guiding block 54 is located between the two guide rails 41 of the track 4. The pressing block 52 is arranged to compact the long elastic piece 51, and the guiding block 54 guides the pressing block 52 to move along the track 4.

[0034] In this embodiment, the pressing elastic piece 53 is fixed above the pressing block 52 and moves with the pressing block 52. The arrangement of the pressing elastic piece 53 facilitates that when the entire protection assembly 5 is installed inside the anvil assembly 1, when the top of the pressing elastic piece 53 bounces and is pressed by the top shell of the anvil assembly 1, it presses on the pressing block 52, and further compacts the long elastic piece 51 through the pressing block 52.

[0035] In this embodiment, the pressing block 52 is arranged on the long elastic piece 51, and when the pressing elastic piece 53 is fixed on the top of the pressing block 52 and placed inside the anvil assembly 1, the height of the pressing block 52 is flush with the pushing block 31 at the top of the cutter 3, which is convenient for the cutter 3 to push the pressing block 52 to move along the track 4 together when firing.

[0036] In this embodiment, an observation hole 6 is provided at the tail of the track 4 where the cutter 3 moves in the anvil assembly 1 to observe the current state of the track 4.

[0037] When this application is in operation, when the cutter 3 is fired for the first time, the pushing block 31 at the top of the cutter 3 moves along the track 4. When it contacts the pressing block 52, it drives the pressing block 52 and the pressing elastic piece 53 on the top of the pressing block 52 to move along the track 4 to the tail of the track 4 together. At this time, the long elastic piece 51 bounces up after losing the restriction of the pressing block 52, and the opening faces the side of the body 2. When the cutter 3 retreats to the body 2 after firing, since the opening of the bounced long elastic piece 51 faces the side of the body 2, the pushing block 31 at the top of the cutter 3 presses down the long elastic piece 51 along the top of the long elastic piece 51 during the retreat process and then retreats to the body 2. After this process, the long elastic piece 51 continues to bounce up and the pressing block 52 and the pressing elastic piece 53 on the top of the pressing block 52 remain at the tail of the track 4. Thereafter, the operator can directly see the pressing block 52 and the pressing elastic piece 53 on the track 4 through the observation hole 6 on the anvil assembly 1, and judge that the cutter 3 has been fired. At the same time, even if the operator accidentally touches and causes the cutter 3 to be fired again, the bounced long elastic piece 51 will limit the pushing block 31 at the top of the cutter 3 in the anvil assembly 1 from the direction of the body 2, preventing the secondary firing of the cutter 3.

[0038] The above embodiments are only illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A one-shot protection structure for a laparoscopic stapler assembly, comprising an anvil assembly and a body, characterized in that: The nail anvil assembly is mounted on the device body, a track for the movement of the cutting knife in the device body is arranged inside the nail anvil assembly, a protection assembly is arranged on the track to limit the cutting knife from being used for the first time and being used again after being returned, and the protection assembly is arranged near the side where the nail anvil assembly and the device body are connected, and is located inside the nail anvil assembly; The protection assembly includes a long spring sheet, a pressure block and a pressing spring sheet, wherein the long spring sheet is fixed on the guide rails on both sides of the track, the pressure block spans the guide rails on both sides of the track and is arranged above the long spring sheet, and the pressing spring sheet is arranged above the pressure block; An observation hole is arranged at the tail of the track where the cutter moves in the nail anvil assembly to observe the current track state.

2. A one-shot protection structure for a laparoscopic stapler assembly according to claim 1, characterized in that: The opening of the long elastic sheet faces one side of the device body.

3. The one-shot protection structure for a laparoscopic stapler assembly according to claim 1, characterized in that: The guide rail provided with the long elastic sheet is provided with a groove having the same shape as the long elastic sheet. When the long elastic sheet is arranged in the groove and is in a compressed state, the top end surface of the upper elastic sheet is flush with the guide rail.

4. The one-shot protection structure for a laparoscopic stapler assembly according to claim 1, characterized in that: The opening height of the long spring sheet when it bounces up is higher than the push block on the top of the cutting knife.

5. The one-shot protection structure for a laparoscopic stapler assembly according to claim 1, characterized in that: The pressing block is slidably connected to the long spring sheet, and a guide block is arranged at the bottom of the pressing block, and the guide block is located between the guide rails on both sides of the track.

6. The one-shot protection structure for a laparoscopic stapler assembly according to claim 1, characterized in that: The pressing spring sheet is fixed above the pressing block and moves with the pressing block.

7. The one-shot protection structure for a laparoscopic stapler assembly according to claim 1, characterized in that: The pressing block is arranged on the long spring sheet and when the top of the pressing block is fixed and the spring sheet is pressed and put into the nail magazine assembly, the height of the pressing block is flush with the pushing block on the top of the cutting knife.

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