Anastomat

Abstract

The utility model discloses an anastomat which comprises a shell, an electric driving assembly, a manual auxiliary assembly, a percussion assembly and a nail bin assembly, the electric driving assembly outputs power and transmits motion to the nail bin assembly through the percussion assembly, and percussion action is completed; when the electric driving assembly cannot operate normally, the manual auxiliary assembly outputs power and transmits motion to the nail bin assembly through the percussion assembly, and the percussion action is completed; the manual auxiliary assembly comprises an intermediate gear, a supporting frame, a pressing plate, a connecting rod, a connecting rod pin shaft, a separation pull rod and a pull rod pin shaft. According to the technical scheme, when an electrical system breaks down, the manual auxiliary assembly is started to complete percussion, and it can be guaranteed that an operation is completed smoothly.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, and particularly relates to a stapler. Background Art

[0002] A stapler is a medical device that can be used for digestive tract anastomosis and reconstruction surgeries such as gastric and intestinal surgeries. In the prior art, in addition to traditional manual staplers, electric staplers have also been widely adopted. The electric stapler uses a motor drive to replace the doctor's manual firing operation to reduce the doctor's workload during the surgery. However, the introduced electrical system is not as stable and reliable as the mechanical structure, and may malfunction during the firing process. If the electrical system malfunctions, it is necessary to replace the stapler to continue the surgery, which prolongs the surgery time and may cause harm to the tissue. Therefore, how to continue the surgery when the electrical system malfunctions is a technical problem urgently to be solved in this field. Content of the Utility Model

[0003] To solve the above technical problems, the technical solution provided by the utility model is as follows:

[0004] A stapler, the stapler is a tubular stapler, including: a housing 1, an electric drive component, a manual auxiliary component 3, a firing component 4 and a cartridge component 5. The electric drive component outputs power, and transmits the movement to the cartridge component 5 through the firing component 4 to complete the firing action; when the electric drive component cannot operate normally, the manual auxiliary component 3 outputs power and transmits the movement to the cartridge component 5 through the firing component 4 to complete the firing action; wherein, the manual auxiliary component 3 includes: an intermediate gear 31, a support frame 32, a pressing plate 33, a connecting rod 34, a connecting rod pin 341, a separating pull rod 35 and a pull rod pin 351.

[0005] Further, the electric drive component includes: a drive motor 2 and a drive gear 21, and the drive gear 21 is installed on the drive motor 2 to output power.

[0006] Further, the firing component 4 includes: a firing gear 41, a firing cam 42, an auxiliary bevel gear 43, a firing lever 44, a pushing block 45 and a bent push rod 46.

[0007] Further, the intermediate gear 31 includes a first tooth end 311 and a second tooth end 312. The first tooth end 311 meshes with the drive gear 21, and the second tooth end 312 meshes with the firing gear 41. The pressing plate 33 presses the intermediate gear shaft 313 to ensure the stable and reliable meshing of the intermediate gear 31 with the drive gear 21 and the firing gear 41.

[0008] Further, the firing gear 41 includes a straight-tooth end 411 and a bevel-tooth end 412. The straight-tooth end 411 meshes with the second tooth end 312 of the intermediate gear, and the bevel-tooth end 412 meshes with the auxiliary bevel gear 43. The firing cam 42 includes a pushing surface 421, and the radius of the pushing surface 421 from the rotation center gradually increases.

[0009] Further, the firing lever 44 includes a firing lever driving arm 441 and a firing lever driven arm 442.

[0010] Further, the firing cam 42 includes a pulling hook 422 and a stop projection 423, and a retracting projection 444 is provided on the firing lever driving arm 441.

[0011] Further, the stapler further includes a stop button 47 and a stop switch 48. After firing is completed, as the firing cam 42 continues to rotate, the pulling hook 422 contacts the firing retracting projection 444 and pulls the firing lever 44 back to the initial position. At this time, the stop projection 423 on the firing cam 42 presses the stop button 47 and then presses the stop switch 48, and the driving motor stops rotating.

[0012] Further, the auxiliary bevel gear 43 has a bevel gear cavity 431 and a positioning rib 432. The manual auxiliary component 3 further includes a positioning block 37 and a return spring 38. The positioning block 37 is away from the bevel gear cavity 431 under the action of the return spring 38. When the auxiliary wrench 36 is inserted into the auxiliary bevel gear 43, the auxiliary wrench step 361 presses the positioning block 37, and the positioning block 37 enters the bevel gear cavity 431. When the auxiliary wrench rotates to the positioning rib 432 contacts the positioning block 37, the rotation of the auxiliary bevel gear 43 and the auxiliary wrench 36 is blocked and stops.

[0013] Further, the stapler of the present invention is a tubular stapler.

[0014] After adopting such a design, the present invention has at least the following advantages:

[0015] (1) When the electrical system fails, the manual auxiliary component is enabled to complete firing, ensuring the smooth completion of the operation.

[0016] (2) Avoid tissue damage caused by replacing the stapler.

[0017] (3) The structure of the present invention is simple, with good effects, low cost, and easy to implement in the process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly, the following provides a further detailed description of the present invention in conjunction with the drawings and specific embodiments.

[0019] Figure 1This is an overall schematic diagram of the anastomosis device of the utility model;

[0020] Figure 2 This is a schematic diagram of the assembly of the stapler of the present invention after the outer shell is removed;

[0021] Figure 3 This is a schematic diagram of the assembly of the manual auxiliary component of the utility model;

[0022] Figure 4 This is a schematic diagram of the assembly of the manual auxiliary component from another perspective of the present invention;

[0023] Figure 5 This is a schematic diagram of the manual auxiliary component and the firing component of the present invention;

[0024] Figure 6 This is a schematic diagram of the firing assembly of the utility model in a firing state;

[0025] Figure 7 This is a schematic diagram of the firing assembly of the utility model in an initial state;

[0026] Figure 8 This is a schematic diagram of the firing cam structure of the utility model;

[0027] Figure 9 This is a schematic diagram of the assembly of the utility model after the separation pull rod is pulled up;

[0028] Figure 10 This is a schematic diagram of the utility model assembled after the separation rod is pulled up from another perspective;

[0029] Figure 11 This is a schematic diagram of the auxiliary wrench for assisting firing in the utility model;

[0030] Figure 12 This is a cross-sectional view of the utility model where the stop block does not enter the cavity of the bevel gear;

[0031] Figure 13 This is a cross-sectional view of the stop block of the utility model entering the cavity of the bevel gear;

[0032] Figure 14 This is a schematic diagram of the stop block of the utility model;

[0033] Reference numerals: 1 - outer shell, 2 - drive motor, 21 - drive gear, 3 - manual auxiliary component, 301 - first pin shaft, 302 - second pin shaft, 303 - third pin shaft, 31 - intermediate gear, 311 - first tooth end of intermediate gear, 312 - second tooth end of intermediate gear, 313 - intermediate gear rotating shaft, 32 - support frame, 33 - pressing plate, 331 - linkage wire, 34 - connecting rod, 341 - connecting rod pin shaft, 35 - separating pull rod, 351 - pull rod pin shaft, 36 - auxiliary wrench, 361 - auxiliary wrench step, 37 - stop block, 38 - return spring, 4 - firing component, 41 - firing gear, 411 - straight tooth end of firing gear, 412 - bevel gear end of firing gear, 42 - firing cam, 421 - pushing surface, 422 - pulling hook, 423 - stop protrusion, 43 - auxiliary bevel gear, 431 - bevel gear cavity, 432 - stop rib, 44 - firing lever, 441 - driving arm of firing lever, 442 - driven arm of firing lever, 443 - lever pin shaft, 444 - retracting protrusion, 45 - pushing block, 451 - pushing pin shaft, 46 - bent push rod, 47 - stop button, 48 - stop switch, 5 - staple cartridge assembly. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] In this article, "upper", "lower", etc. are only used to represent the relative positional relationship between relevant parts, rather than limiting the absolute positions of these relevant parts.

[0036] Refer to the attached Figures 1-14 , a stapler, the stapler is a tubular stapler, including: an outer shell 1, an electric drive component, a manual auxiliary component 3, a firing component 4 and a staple cartridge assembly 5. The electric drive component outputs power to transmit the movement to the staple cartridge assembly 5 through the firing component 4 to complete the firing action; when the electric drive component cannot operate normally, the manual auxiliary component 3 outputs power to transmit the movement to the staple cartridge assembly 5 through the firing component 4 to complete the firing action; the firing component 4 includes: a firing gear 41, a firing cam 42, an auxiliary bevel gear 43, a firing lever 44, a pushing block 45 and a bent push rod 46; the manual auxiliary component 3 includes: an intermediate gear 31, a support frame 32, a pressing plate 33, a connecting rod 34, a connecting rod pin shaft 341, a separating pull rod 35 and a pull rod pin shaft 351.

[0037] The electric drive assembly includes: a drive motor 2 and a drive gear 21. The drive gear 21 is installed on the drive motor 2 to output power. The intermediate gear 31 includes a first tooth end 311 and a second tooth end 312. The first tooth end 311 meshes with the drive gear 21, and the second tooth end 312 meshes with the firing gear 41. The pressing plate 33 presses the intermediate gear shaft 313 to ensure the stable and reliable meshing of the intermediate gear 31 with the drive gear 21 and the firing gear 41. The linkage wire 331 straddles the intermediate gear shaft 313 and is installed on the pressing plate 33. One end of the pressing plate 33 is connected to the support frame 32 through the first pin shaft 301, and the other end is connected to the connecting rod 34 through the second pin shaft 302. A connecting rod pin shaft 341 is installed on the connecting rod 34. The separating pull rod 35 is connected to the connecting rod pin shaft 341 through the pull rod pin shaft 351. The separating pull rod 35 can rotate around the third pin shaft 303.

[0038] The firing gear 41 includes a straight tooth end 411 and a tapered tooth end 412. The straight tooth end 411 meshes with the second tooth end 312 of the intermediate gear, and the tapered tooth end 412 meshes with the auxiliary bevel gear 43. The firing cam 42 includes a pushing surface 421, and the radius of the pushing surface 421 from the rotation center gradually increases; the firing lever 44 includes a firing lever driving arm 441 and a firing lever driven arm 442. The firing gear 41 drives the firing cam 42 to rotate. Since the radius of the pushing surface 421 of the firing cam 42 from the rotation center gradually increases, as the firing cam 42 rotates, it pushes the firing lever driving arm 441 to rotate around the lever pin shaft 443, thereby driving the firing lever driven arm 442 to push the advancing block 45 to move. The advancing block 45 is connected to the bent push rod 46 through the advancing pin shaft 451, and further transmits the movement to the staple cartridge assembly 5 to complete the firing action.

[0039] After the stapler completes one firing, the drive motor should stop working to prevent multiple firings from damaging tissues. To ensure that the stapler only completes one firing, the firing cam 42 includes a retracting hook 422 and a stop projection 423, and a retracting projection 444 is provided on the firing lever driving arm 441. After firing is completed, as the firing cam 42 continues to rotate, the retracting hook 422 contacts the retracting projection 444 on the firing lever driving arm 441 and pulls the firing lever 44 back to the initial position. At this time, the stop projection 423 on the firing cam 42 presses the stop button 47 and then presses the stop switch 48, and the drive motor 2 stops rotating, completing the entire firing action process.

[0040] When a fault occurs in the electrical system, the drive motor 2 cannot operate normally. At this time, pull up the separation lever 35. The separation lever 35 pushes the connecting rod 34 away from the firing gear 41 through the lever pin 351 and the connecting rod pin 341. The connecting rod 34 drives the pressing plate 33 and the linkage wire 331 to move the intermediate gear 31 away from the drive gear 21 and the firing gear 41, achieving disengagement, and disconnecting the transmission between the drive motor 2 and the firing assembly 4. Install the auxiliary wrench 36 into the auxiliary bevel gear 43 and rotate it. The auxiliary bevel gear 43 drives the firing gear 41 to rotate, and then drives the firing cam 42, the firing lever 44, the propulsion block 45, the bent push rod 46, and the staple cartridge assembly 5 to complete the firing action.

[0041] During manual firing, to prevent multiple firings from damaging tissues, the auxiliary bevel gear 43 has a bevel gear cavity 431 and a stop rib 432. The manual auxiliary assembly 3 also includes a stop block 37 and a return spring 38. The stop block 37 is away from the bevel gear cavity 431 under the action of the return spring 38. When the auxiliary wrench 36 is installed into the auxiliary bevel gear 43, the auxiliary wrench step 361 presses the stop block 37, and the stop block 37 enters the bevel gear cavity 431. When the auxiliary wrench rotates to the stop rib 432 contacts the stop block 37, the rotation of the auxiliary bevel gear 43 and the auxiliary wrench 36 is resisted and stops. Specifically, when the electrical system operates normally, the auxiliary wrench 36 is not installed into the auxiliary bevel gear 43, the stop block 37 is away from the bevel gear cavity 431 under the action of the return spring 38, and the stop block 37 does not play a stop role. The drive motor 2 stops rotating relying on the stop switch 48. As Figure 13 shown, when a fault occurs in the electrical system, during the process of installing the auxiliary wrench 36 into the auxiliary bevel gear 43, the auxiliary wrench step 361 presses the stop block 37, and the stop block 37 enters the bevel gear cavity 431. After using the auxiliary wrench 36 to complete the firing action, continue to rotate the auxiliary wrench 36 to pull the firing lever 44 back to the initial position. As Figure 14 shown, at this time, the stop rib 432 on the auxiliary bevel gear 43 contacts the stop block 37, and the rotation of the auxiliary bevel gear 43 and the auxiliary wrench 36 is resisted and stops, completing the entire firing action process. The setting of the above structure ensures that the firing action is only carried out once, thus avoiding damage to tissues.

[0042] After considering the present utility model disclosed in the specification and the embodiments, those skilled in the art will easily think of other implementation schemes of the present utility model. This application aims to cover any variations, uses or adaptable changes of the present utility model, and these variations, uses or adaptable changes follow the general principles of the present utility model and include the well-known common knowledge or conventional technical means in the technical field not disclosed in the present utility model. The specification and the embodiments are only regarded as exemplary, and the true scope and spirit of the present utility model are pointed out by the claims.

[0043] It should be understood that the present utility model is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present utility model is only limited by the appended claims.

Claims

1. A stapler, comprising: The outer shell, electric drive component, manual assist component, firing component and nail magazine component, the electric drive component outputs power to transmit the motion to the nail magazine component through the firing component to complete the firing action; when the electric drive component cannot operate normally, the manual assist component outputs power to transmit the motion to the nail magazine assembly through the firing component to complete the firing action; wherein, the manual assist component includes: an intermediate gear, a support frame, a clamping plate, a connecting rod, a connecting rod pin, a separation pull rod and a pull rod pin.

2. The stapler according to claim 1, wherein: The electric drive assembly includes a drive motor and a drive gear. The drive gear is installed on the drive motor to output power.

3. The stapler according to claim 1 or 2, characterized in that: The firing assembly includes a firing gear, a firing cam, an auxiliary bevel gear, a firing lever, a propulsion block and a curved push rod.

4. The stapler according to claim 3, wherein: The intermediate gear includes a first tooth end and a second tooth end. The first tooth end is engaged with the driving gear, and the second tooth end is engaged with the firing gear. The clamping plate presses the intermediate gear shaft to ensure that the engagement between the intermediate gear and the driving gear and the firing gear is stable and reliable.

5. The stapler according to claim 4, wherein: The firing gear includes a straight tooth end and a bevel tooth end, the straight tooth end is engaged with the second tooth end of the intermediate gear, and the bevel tooth end is engaged with the auxiliary bevel gear. The firing cam includes a push surface, and the radius of the push surface gradually increases from the center of rotation.

6. The stapler according to claim 3, wherein: The firing lever includes a firing lever active arm and a firing lever passive arm.

7. The stapler according to claim 6, wherein: The firing cam includes a retraction hook and a stop protrusion, and the firing lever active arm is provided with a retraction protrusion.

8. The stapler according to claim 7, wherein: The stapler also includes a stop button and a stop switch. After the firing is completed, as the firing cam continues to rotate, the retraction hook contacts the firing retraction protrusion and pulls the firing lever back to the initial position. At this time, the stop protrusion on the firing cam presses the stop button and then presses the stop switch, driving the motor to stop rotating.

9. The stapler according to claim 3, wherein: The auxiliary bevel gear is provided with a bevel gear cavity and a stop rib. The manual auxiliary component also includes a stop block and a reset spring. The stop block is moved away from the bevel gear cavity under the action of the reset spring. When the auxiliary wrench is installed into the auxiliary bevel gear, the auxiliary wrench step on the auxiliary wrench presses the stop block, and the stop block enters the bevel gear cavity. When the auxiliary wrench is rotated until the stop rib contacts the stop block, the rotation of the auxiliary bevel gear and the auxiliary wrench is stopped by resistance.

10. The stapler according to claim 1 or 2, characterized in that: The anastomosis device is a tubular anastomosis device.

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