Stapler limiting device and laparoscopic stapler

Abstract

The present invention discloses a stapler limiting device, comprising a handle, a driving member, a sliding member, a pushing member, a limiting assembly and an adjusting member. The sliding member is composed of a sliding portion and a connecting portion. The adjusting member is mounted on a rotating shaft and is located between symmetrically arranged limiting assemblies, and the adjusting member is hingedly connected to the connecting portion of the sliding member. The limiting device is not only compact in structure and ingenious in design, but also controls the opening and closing angle between the anvil and the staple magazine by pressing the handle by the doctor, so that the handle pushes the driving member to move. At the same time, the driving member can be linked with the adjusting member so that the angle of rotation of the movable part on the adjusting member can be observed by the doctor when pressing the handle, thereby achieving intuitive observation and facilitating the doctor to control the angle between the anvil and the staple magazine. At the same time, arbitrary angles of stay between the anvil and the staple magazine can be achieved.

Description

Technical Field

[0001] The present invention relates to stapler technology, and in particular to a stapler limiting device and a laparoscopic stapler. Background Art

[0002] A stapler is a device that can insert multiple staggered staples into tissue in a straight line. It is also one of the instruments widely used to replace manual linear suturing. The main function of a stapler is to facilitate and quickly suture wounds. Using a stapler instead of traditional manual suturing can speed up suturing and reduce side effects and surgical complications. Among them, linear cutting staplers are suitable for transecting, resecting and / or stapling operations. They can be used for multi-site open or minimally invasive general surgery, gynecology, urology, thoracic surgery and pediatric surgery. They can be used in conjunction with sutures or padding materials. They can also be used to transect and resect hepatobiliary parenchyma (liver blood vessels and biliary structures), pancreas, kidneys and spleen.

[0003] The movable handle in existing staplers uses an automatic reset structure. When the movable handle is pressed, it automatically resets under the action of a torsion spring, allowing the next operation to proceed. However, when suturing, the automatic reset operation is not required, making it difficult to control the reset. At the same time, the angle between the anvil and the stapler is controlled by the doctor based on experience and the angle of the movable handle. The unintuitive control of the angle between the anvil and the stapler can affect the progress of the operation. Summary of the Invention

[0004] In order to solve the above-mentioned defects in the prior art, the present invention proposes a stapler limiting device and a laparoscopic stapler.

[0005] The technical solution of the present invention is achieved as follows:

[0006] A stapler limiting device, characterized by comprising:

[0007] One handle;

[0008] a driving member hinged to the upper end of the handle;

[0009] A sliding member, the sliding member consisting of a sliding portion and a connecting portion;

[0010] a pusher, one end of which is hingedly connected to the driving member and the other end of which is hingedly connected to the sliding portion, wherein the middle of the pusher is installed inside the anastomosis housing via a first rotating shaft;

[0011] Symmetrically arranged limit assemblies, which are connected by a rotating shaft and are located at both ends of the rotating shaft; and

[0012] An adjusting member for adjusting the position of the driving member is installed on the rotating shaft and is located between the symmetrically arranged limiting components. The adjusting member is hingedly connected to the connecting portion of the sliding member.

[0013] In the present invention, the angle between the sliding portion and the connecting portion is 135°.

[0014] In the present invention, the sliding portion is arranged parallel to the driving member.

[0015] In the present invention, the limiting assembly is composed of a positioning member and a limiting member. The positioning member is fixed in the anastomosis device housing through a mounting portion, and the limiting member is arranged in the middle of the positioning member.

[0016] In the present invention, a mounting hole is provided in the middle of the positioning member, a first tooth is provided on the inner wall of the mounting hole, and a second tooth cooperating with the first tooth is provided on the outer wall of the limiting member.

[0017] In the present invention, a deformation hole is provided in the middle of the second tooth.

[0018] In the present invention, a limiting hole is provided in the middle of the limiting member, and limiting portions that match the cross section of the limiting hole are provided at both ends of the rotating shaft.

[0019] In the present invention, the adjusting member is composed of a sealing part, a hinged part, a positioning part and a movable part. The adjusting member is arranged on the rotating shaft through the positioning part, the sealing part is arranged on the movable part, the hinged part and the movable part are arranged vertically, and the adjusting member is hingedly connected to the connecting part through the hinged part.

[0020] In the present invention, a limiting groove is provided on the rotating shaft, a mounting hole for mounting the rotating shaft is provided in the middle of the positioning portion, and a limiting protrusion is provided in the mounting hole to cooperate with the limiting groove.

[0021] A laparoscopic stapler is characterized by adopting the above-mentioned stapler limiting device.

[0022] The stapler limiter and laparoscopic stapler of the present invention have the following beneficial effects: the limiter is not only compact and ingeniously designed, but also allows the doctor to press the handle, causing the handle to push the driving member to move, thereby controlling the opening and closing angle between the anvil and the staple magazine. The driving member can also be linked with the adjusting member, causing the movable portion on the adjusting member to rotate at an angle. This allows the doctor to observe the rotating angle of the movable portion when pressing the handle, enabling intuitive observation and facilitating the doctor's control of the angle between the anvil and the staple magazine. Furthermore, the anvil and staple magazine can be positioned at any desired angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 An exploded view of the stapler of the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of the limit device structure;

[0025] Figure 3 for Figure 2 A schematic diagram of the structure in another direction;

[0026] Figure 4 for Figure 2 Exploded diagram;

[0027] Figure 5 for Figure 4 Schematic diagram of the limit component structure in;

[0028] Figure 6 for Figure 4 Schematic diagram of the adjusting member and the rotating shaft structure;

[0029] Figure 7 for Figure 3 Force analysis diagram.

[0030] In the figure: handle 1, driving member 2, sliding member 3, pushing member 4, limiting assembly 5, adjusting member 6, nail seat 7, nail magazine 8, gun rod assembly 9, housing 10, fixed cylinder 11, limiting device 12, rear seat 13, through hole 14, sealing part 15, movable part 16, second rotating shaft 17, third rotating shaft 18, sliding part 19, connecting part 20, first rotating shaft 21, fourth rotating shaft 22, fifth rotating shaft 23, hinge part 24, rotating shaft 25, positioning member 26, limiting member 27, mounting part 28, mounting hole 29, first tooth 30, second tooth 31, deformation hole 32, limiting hole 33, limiting part 34, limiting groove 35, positioning part 36, limiting protrusion 37, fixing hole 38, sixth rotating shaft 39, retaining hole 40. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0032] like Figures 1 to 6 As shown, the stapler limiting device of the present invention includes a handle 1, a driving member 2, a sliding member 3, a pushing member 4, a limiting assembly 5 and an adjusting member 6.

[0033] The stapler of the present invention comprises an anvil 7, a staple cartridge 8, a gun rod assembly 9, a housing 10, a fixed cylinder 11, a stopper 12, and a backrest 13. A handle 1 in the stopper 12 actuates the gun rod assembly 9, causing the anvil 7 to open and close. The handle 1 drives a driver 2 toward the gun rod assembly 9, which is connected to the gun rod assembly 9. The gun rod assembly 9, anvil 7, and staple cartridge 8 can be constructed using existing technology.

[0034] A through hole 14 is provided on the rear seat 13 , and the through hole 14 is used to cooperate with a sealing portion 15 in the adjusting member 6 . When the movable portion 16 does not rotate, the sealing portion 15 closes the through hole 14 .

[0035] The driving member 2 is hinged to the upper end of the handle 1 , and the middle of the driving member 2 is hinged to the upper end of the handle 1 via a second rotating shaft 17 . The handle 1 is hinged to the housing 10 via a third rotating shaft 18 .

[0036] The sliding member 3 is composed of a sliding portion 19 and a connecting portion 20 , wherein the angle between the sliding portion 19 and the connecting portion 20 is 135°. The sliding portion 19 is arranged parallel to the driving member 2 .

[0037] One end of the pusher 4 is hingedly connected to the driver 2, and the other end is hingedly connected to the sliding portion 19. The middle of the pusher 4 is mounted inside the stapler housing 10 via a first rotating shaft 21. The upper end of the pusher 4 is hingedly connected to the sliding portion 19 via a fourth rotating shaft 22, and the connecting portion 20 is hingedly connected to the hinge portion 24 via a fifth rotating shaft 23. The lower end of the pusher 4 is hingedly connected to the driver 2 via a sixth rotating shaft 39.

[0038] The limiting assembly 5 is symmetrically arranged and connected by a rotating shaft 25, and is located at both ends of the rotating shaft 25. The limiting assembly 5 consists of a positioning member 26 and a limiting member 27. The positioning member 26 is fixed in the anastomosis device housing 10 via a mounting portion 28, and the limiting member 27 is arranged in the middle of the positioning member 26. A mounting hole 29 is provided in the middle of the positioning member 26, and a first tooth 30 is provided on the inner wall of the mounting hole 29. The outer wall of the limiting member 27 is provided with a second tooth 31 that cooperates with the first tooth 30. The second tooth 31 has a deformation hole 32 in the middle. A limiting hole 33 is provided in the middle of the limiting member 27, and limiting portions 34 that cooperate with the cross section of the limiting hole 33 are provided at both ends of the rotating shaft 25.

[0039] A limiting groove 35 is provided on the rotating shaft 25 . A retaining hole 40 for mounting the rotating shaft 25 is provided in the middle of the positioning portion 36 . A limiting protrusion 37 that cooperates with the limiting groove 35 is provided in the retaining hole 40 .

[0040] When the rotating shaft 25 drives the limiting member 27 to rotate, the second tooth 31 is blocked by the first tooth 30. As a result, the second tooth 31 is deformed by the force exerted by the first tooth 30, shrinking the deformation hole 32. This allows the limiting member 27 to rotate within the center of the positioning member 26. When the rotating shaft 25 stops rotating, the first tooth 30 again restricts the position of the second tooth 31. This allows the limiting member 27 to maintain its position regardless of whether it is rotating forward or backward. Of course, the limiting member 27 requires external force to free itself from the restraint of the first tooth 30.

[0041] The adjusting member 6 is used to adjust the position of the driving member 2. It is mounted on the rotating shaft 25 and positioned between the symmetrically arranged stop assemblies 5. It is hingedly connected to the connecting portion 20 of the sliding member 3. The adjusting member 6 comprises a sealing portion 15, a hinged portion 24, a positioning portion 36, and a movable portion 16. The adjusting member 6 is mounted on the rotating shaft 25 via the positioning portion 36. The sealing portion 15 is mounted on the movable portion 16, and the hinged portion 24 and movable portion 16 are arranged perpendicularly. The adjusting member 6 is hingedly connected to the connecting portion 20 via the hinged portion 24.

[0042] When the handle 1 is pressed, the driving member 2 moves toward the gun rod assembly 9, and the driving member 2 drives the lower end of the pushing member 4 to rotate toward the gun rod assembly 9. The upper end of the pushing member 4 pushes the sliding member 3 toward the rear seat 13, causing the sliding member 3 to push the hinge portion 24 to rotate about the rotation axis 25, causing the movable portion 16 to rotate about the rotation axis 25. The angle between the movable portion 16 and the through hole 14 facilitates the angle between the anvil 7 and the nail magazine 8, allowing for intuitive observation and facilitating the operation.

[0043] In addition, fixing holes 38 are provided at the upper and lower ends of the pushing member 4 . The diameter of the fixing holes 38 is larger than the diameter of the fourth rotating shaft 22 and the sixth rotating shaft 39 , so as to facilitate the movement among the pushing member 4 , the sliding member 3 and the driving member 2 .

[0044] A laparoscopic stapler adopts the above-mentioned stapler limiting device 12.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A stapler limiting device, characterized in that: include: One handle; a driving member hinged to the upper end of the handle; A sliding member, the sliding member consisting of a sliding portion and a connecting portion; a pusher, one end of which is hingedly connected to the driving member and the other end of which is hingedly connected to the sliding portion, wherein the middle of the pusher is installed inside the anastomosis housing via a first rotating shaft; Symmetrically arranged limit assemblies, which are connected by a rotating shaft and are located at both ends of the rotating shaft; and An adjusting member for adjusting the position of the driving member, the adjusting member being mounted on the rotating shaft and located between the symmetrically arranged limiting assemblies, and being hingedly connected to the connecting portion of the sliding member; The adjusting member is composed of a sealing portion, a hinge portion, a positioning portion and a movable portion. The adjusting member is arranged on the rotating shaft through the positioning portion, the sealing portion is arranged on the movable portion, the hinge portion and the movable portion are arranged vertically, and the adjusting member is hingedly connected to the connecting portion through the hinge portion. The rotating shaft is provided with a limiting groove, the middle of the positioning portion is provided with a mounting hole for mounting the rotating shaft, and the mounting hole is provided with a limiting protrusion that cooperates with the limiting groove.

2. The stapler limiting device according to claim 1, characterized in that: The angle between the sliding portion and the connecting portion is 135°.

3. The stapler limiting device according to claim 1, characterized in that: The sliding portion is arranged parallel to the driving member.

4. The stapler limiting device according to claim 1, characterized in that: The limiting assembly consists of a positioning member and a limiting member. The positioning member is fixed in the anastomosis device housing through a mounting portion, and the limiting member is arranged in the middle of the positioning member.

5. The stapler limiting device according to claim 4, characterized in that: A mounting hole is provided in the middle of the positioning member, a first tooth is provided on the inner wall of the mounting hole, and a second tooth matching the first tooth is provided on the outer wall of the limiting member.

6. The stapler limiting device according to claim 5, characterized in that: A deformation hole is formed in the middle of the second tooth.

7. The stapler limiting device according to claim 4, characterized in that: A limiting hole is provided in the middle of the limiting member, and limiting portions that match the cross section of the limiting hole are provided at both ends of the rotating shaft.

8. A laparoscopic stapler, characterized in that: The anastomosis device limiting device described in claim 1 is used.

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