Electric anastomat with manual reset structure

Abstract

The utility model provides an electric anastomat with a manual reset structure, which relates to the technical field of surgical medical instruments and comprises a shell, a nail box component, a transmission component and a reset driving part. The nail box assembly is arranged in the shell; the transmission assembly is arranged on the support and comprises a first transmission part and a second transmission part, the second transmission part is connected with the nail box assembly, and the first transmission part drives the nail box assembly through the second transmission part; the reset driving part is movably arranged on the support, the reset driving part is provided with a working position, and when the reset driving part moves to the working position, the reset driving part is in transmission connection with the second transmission part and pushes the first transmission part to be separated from the second transmission part. According to the anastomat, the manual reset structure is simplified, the manufacturing and production assembly cost of the manual reset structure is reduced, and the anastomat has good industrial value and economic benefits.

Description

Technical Field

[0001] The utility model belongs to the technical field of surgical medical instruments, in particular to an electric stapler with a manual resetting structure. Background Art

[0002] Electric staplers are used for suturing, cutting and separating tissues and organs during laparoscopic and open surgery. Compared with the effect of cutting and suturing tissues by traditional manual laparoscopic staplers, the anastomosis after cutting and suturing by electric staplers is smoother and neater, and the patient's postoperative wound recovery is better. Electric staplers have become a development trend in the medical industry. The electric stapler consists of a handle and a stapler magazine. The stapler can cut and sew tissues through the closing, opening, cutting and retracting functions of the stapler magazine. During the use of the electric stapler, a variety of unexpected situations may occur, causing the instrument to stop operating, such as battery exhaustion, circuit board signal loss, motor damage, etc., so the electric staplers are currently equipped with a manual reset structure.

[0003] The current manual reset structure requires a separate mechanism to separate the transmission assembly from the stapler assembly, so the current manual reset structure is relatively complex, difficult to assemble, and relatively expensive to manufacture. In addition, due to its complex structure, it requires multiple parts to cooperate during use. If any of the parts fails or is damaged, it will affect the safety of the electric stapler during reset. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an electric stapler with a manual reset structure, so as to solve the problem that the manual reset structure of the electric stapler in the prior art is relatively complicated.

[0005] In order to achieve the above-mentioned and other related purposes, the utility model provides an electric stapler with a manual reset structure, comprising:

[0006] A housing, wherein a bracket is disposed in the housing;

[0007] A nail magazine assembly, wherein the nail magazine assembly is disposed in the housing;

[0008] A transmission assembly, wherein the transmission assembly is disposed on the bracket, the transmission assembly comprises a first transmission member and a second transmission member, the second transmission member is connected to the nail magazine assembly, and the first transmission member drives the nail magazine assembly through the second transmission member;

[0009] A reset driving member is movably arranged on the bracket, and the reset driving member has a working position. When the reset driving member moves to the working position, the reset driving member is transmission-connected with the second transmission member and pushes the first transmission member to separate from the second transmission member.

[0010] Optionally, the resetting drive member includes a retracting gear, the first transmission member is a first gear, the retracting gear and the first gear are coaxially arranged, and the retracting gear and the first gear are both arranged along the axial movement of the first gear.

[0011] Optionally, the reset drive member has a normal position, and the reset drive member is moved from the normal position to the working position. The electric stapler also includes a limit assembly arranged in the shell, and the limit assembly limits the reset drive member at the normal position or the working position.

[0012] Optionally, the limiting assembly includes an abutment claw and an elastic member, the elastic member is located on a side of the first gear away from the retracting gear, the elastic member acts on the first gear along the axial direction of the first gear, the abutment claw is arranged on a side of the retracting gear away from the first gear, and an abutment surface is arranged on an end of the abutment claw close to the retracting gear, the reset driving member includes a clamping portion cooperating with the abutment claw, the clamping portion is arranged on the end surface of the retracting gear away from the first gear, and the clamping portion is provided with a first step surface and a second step surface for cooperating with the abutment surface, when the reset driving member is in the normal position, the first step surface abuts against the abutment surface, and when the reset driving member is in the working position, the second step abuts against the abutment surface.

[0013] Optionally, an end surface of the clamping portion away from the first gear is a first step surface.

[0014] Optionally, the elastic member is a spring, and the spring is compressed between the bracket and the first gear along the axial direction of the first gear.

[0015] Optionally, the bracket includes a support shaft, the retracting gear and the first gear are sequentially arranged on the support shaft along the axial direction of the support shaft, and the spring is sleeved on the support shaft.

[0016] Optionally, it is characterized in that: the number of the abutting claws is 2, and the two abutting claws are respectively arranged on two opposite sides of the clamping portion.

[0017] Optionally, a limiting groove is provided on the clamping portion, and the limiting groove is arranged in a circle around the clamping portion. The side of the limiting groove facing the first gear is the second step surface, and the abutting claw has an abutting portion extending into the limiting groove, and the side of the abutting portion facing the first gear is the abutting surface. Chamfers are provided on the side of the abutting portion away from the first gear and the side of the limiting groove facing the first gear.

[0018] Optionally, the shell has a countersunk hole, the clamping portion is arranged in the countersunk hole, a cover plate is arranged at the countersunk hole, the cover plate is used to cover the countersunk hole, and the cover plate is flush with the outer surface of the shell.

[0019] Optionally, the electric stapler also includes a handheld handle for driving the reset drive member to move and rotate, the handheld handle includes a rotating part and an axial rod extending along the moving direction of the reset drive member, the rotating part is connected to one end of the axial rod, and the other end of the axial rod is detachably connected to the reset drive member, and the rotating part drives the reset drive member to rotate via the axial rod.

[0020] Optionally, a blind hole is provided on the reset driving member, and one end of the axial rod connected to the reset driving member is a connecting part, the connecting part matches the blind hole, the connecting part is inserted into the blind hole, and the axial rod drives the reset driving member to rotate through the connecting part.

[0021] As described above, the electric stapler with a manual reset structure of the utility model has the following features:

[0022] Beneficial effects:

[0023] By setting a manual reset structure in the electric stapler, when the return function of the stapler magazine assembly in the electric stapler fails, the reset drive can push the first transmission member to separate the first transmission member from the second transmission member. At this time, the reset drive is connected to the second transmission member, and the stapler magazine assembly can be driven back to its original position by the second transmission member. The manual reset structure does not need to separately set up a mechanism to separate the first transmission member from the second transmission member. The above function can be achieved by using the original reset drive member, which simplifies the manual reset structure in the existing electric stapler and reduces the manufacturing and production assembly costs of the manual reset structure. In addition, since the manual reset structure is relatively simple, the stability of the manual reset structure during use can be increased. The electric stapler with a manual reset structure has good industrial value and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of an electric stapler according to an embodiment of the utility model.

[0025] Figure 2 for Figure 1 A magnified schematic diagram of center A.

[0026] Figure 3 It is a schematic diagram of the partial structure of the stapler according to an embodiment of the utility model.

[0027] Figure 4 This is a partial cross-sectional schematic diagram of a stapler according to an embodiment of the utility model.

[0028] Figure 5 for Figure 4 A magnified schematic diagram of point B in the middle.

[0029] Figure 6 This is the second partial cross-sectional schematic diagram of the stapler according to the embodiment of the utility model.

[0030] Figure 7 This is the third partial cross-sectional schematic diagram of the stapler according to the embodiment of the utility model.

[0031] Explanation of reference numerals: 1. Second transmission member; 2. Support shaft; 3. First gear; 4. Retracting gear; 5. Clamping portion; 6. Rotating portion; 7. Axial rod; 8. Connecting portion; 9. Handle; 10. Elastic member; 11. Blind hole; 12. Countersunk hole; 13. Second step surface; 14. First step surface; 15. Limiting groove; 16. Abutting claw; 17. Abutting portion. DETAILED DESCRIPTION

[0032] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0033] See also Figures 1 to 7 It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0034] In order to describe the present invention in detail, an electric stapler with a manual reset structure of the present invention is specifically described below:

[0035] See also Figures 1 to 5 An electric stapler with a manual reset structure includes a housing, a nail magazine assembly, a transmission assembly and a reset drive member, wherein a bracket is arranged in the housing; the nail magazine assembly is arranged in the housing; the transmission assembly is arranged on the bracket, the transmission assembly includes a first transmission member and a second transmission member 1, the second transmission member 1 is connected to the nail magazine assembly, and the first transmission member drives the nail magazine assembly through the second transmission member 1; the reset drive member is movably arranged on the bracket, the reset drive member has a working position, when the reset drive member moves to the working position, the reset drive member is connected to the second transmission member 1 by transmission, and the first transmission member is pushed to separate from the second transmission member 1. When the return function of the electric stapler fails, the reset drive member can be used to push the first transmission member to separate from the nail magazine assembly, and the reset drive member and the second transmission member 1 are connected by transmission. There is no need to separately set a mechanism for separating the second transmission member 1 from the nail magazine assembly, the manual reset structure in the existing electric stapler is simplified, the manufacturing cost and assembly difficulty of the manual reset structure are reduced, and it is convenient to reset the nail magazine assembly in the electric stapler through the manual reset structure, the operation is simple and convenient, and the practicality of the manual reset structure is improved. It should be noted that the above-mentioned shell is a general term for all the outer shells protecting the built-in components on the stapler, and the stapler magazine assembly includes the stapler magazine and components that move together with the stapler magazine.

[0036] Among them, the reset driving member includes a retracting gear 4, the first transmission member is the first gear 3, the retracting gear 4 and the first gear 3 are coaxially arranged, and the retracting gear 4 and the first gear 3 are arranged along the axial movement of the first gear 3. The retracting gear 4 is coaxially arranged with the first gear 3, the structure is simple, and it is convenient for the retracting gear 4 and the first gear 3 to move along the axial direction of the first gear 3. In this embodiment, the second transmission member 1 is a transmission rack, which is transmitted with the first gear 3 and the retracting gear 4 through the transmission rack, with high transmission accuracy and stable operation. The radius of the retracting gear 4 is the same as that of the first gear 3. When the retracting gear 4 is in the working position, the retracting gear 4 and the first gear 3 are connected to the second transmission member 1 together, so the retracting gear 4 and the first gear 3 can rotate simultaneously. When the retracting function of the electric stapler fails, it is convenient for the retracting gear 4 to maintain the connection state with the second transmission member 1 while pushing the first gear 3 to separate from the second transmission member 1. In some embodiments, the retracting gear 4 and the first gear 3 can be installed on different support shafts 2 respectively. The installation method of the retracting gear 4 and the first gear 3 can be adjusted according to actual use requirements.

[0037] Specifically, the reset drive member has a normal position, and the reset drive member is moved from the normal position to the working position. The electric stapler also includes a limit assembly arranged in the shell, and the limit assembly limits the reset drive member in the normal position or the working position. The limit assembly can limit the position of the reset drive member. When the reset drive member is in the normal position, the limit assembly can ensure that the reset drive member remains in the normal position without being affected by external forces. When the reset drive member moves from the normal position to the working position, it is prevented that the reset drive member is disconnected from the second transmission member 1 after the reset drive member pushes the first transmission member 1 to separate, thereby affecting the resetting effect of the manual reset structure, and even causing the manual reset structure to lose its reset function, thereby reducing the stability of the electric stapler during use.

[0038] In detail, the limiting assembly includes an abutting claw 16 and an elastic member 10, the elastic member 10 is located on the side of the first gear 3 away from the retracting gear 4, the elastic member 10 acts on the first gear 3 along the axial direction of the first gear 3, the abutting claw 16 is arranged on the side of the retracting gear 4 away from the first gear 3, and an abutting surface is arranged on the end of the abutting claw 16 close to the retracting gear 4, and the reset driving member includes a clamping portion 5 matched with the abutting claw 16, the clamping portion 5 is arranged on the end face of the retracting gear 4 away from the first gear 3, and the clamping portion 5 is provided with a first step surface 14 and a second step surface 13 for matching with the abutting surface, when the reset driving member is in the normal position, the first step surface 14 abuts against the abutting surface, and when the reset driving member is in the working position, the second step abuts against the abutting surface. The reset driving member is limited by the first step surface 14 and the second step surface 13 cooperating with the abutting surface, and the structure is simple and the limiting effect is good. The first step surface 14 and the second step surface 13 are easy to manufacture, and the manufacturing is convenient while ensuring the limiting effect. After the electric stapler is reset, its safety will be greatly reduced, and it is not recommended to use it again. Therefore, by using the first step surface 14 and the abutment surface together, it is difficult for the transmission component to return to the position in contact with the stapler component, which can prevent the electric stapler from being used again after the reset operation.

[0039] In this embodiment, the end surface of the clamping portion 5 away from the first gear 3 is a first step surface 14. The end surface is used as the first step surface 14, and the existing structure is used for positioning without setting an additional structure, so the structure is simple and reliable.

[0040] In detail, the elastic member 10 is a spring, and the spring is compressed between the bracket and the first gear 3 along the axial direction of the first gear 3. The spring has the characteristics of low price, high elasticity, and strong impact resistance. The type of the elastic member 10 can be adjusted according to actual work requirements. In this embodiment, the bracket includes a support shaft 2, and the retracting gear 4 and the first gear 3 are sequentially arranged on the support shaft 2 along the axial direction of the support shaft 2, and the spring is sleeved on the support shaft 2. The spring is sleeved on the support shaft 2. The support shaft 2 can provide better supporting force and limiting force for the spring to prevent the spring from sliding away from its setting position when subjected to increased force.

[0041] The number of the abutting claws 16 is 2, and the two abutting claws 16 are respectively arranged on opposite sides of the clamping portion 5. The two abutting claws 16 can better limit the clamping portion 5, and enhance the limiting effect of the limiting component on the reset driving member. The number of the abutting claws 16 can be adjusted according to actual use requirements.

[0042] Specifically, a limiting groove 15 is provided on the clamping portion 5, and the limiting groove 15 is provided around the clamping portion 5. The side of the limiting groove 15 facing the first gear 3 is a second step surface 13, and the abutting claw 16 has an abutting portion 17 extending into the limiting groove 15, and the side of the abutting portion 17 facing the first gear 3 is an abutting surface, and the side of the abutting portion 17 away from the first gear 3 and the side of the limiting groove 15 facing the first gear 3 are chamfered. By setting the chamfer, when the nail magazine assembly fails to reset, it is convenient for the operator to push the abutting portion 17 out of the limiting groove 15, thereby improving the convenience of operating the manual reset structure of the electric stapler.

[0043] Among them, Figures 3 to 7 As shown, the housing has a countersunk hole 12, the clamping portion 5 is arranged in the countersunk hole 12, and a cover plate is arranged at the countersunk hole 12, the cover plate is used to cover the countersunk hole 12, and the cover plate is flush with the outer surface of the housing. The clamping portion 5 is arranged in the countersunk hole 12, and the cover plate is arranged to cover the countersunk hole 12, so as to prevent foreign debris from entering the manual reset structure and affecting the use effect of the manual reset structure, and to prevent misoperation during the use of the electric stapler.

[0044] The electric stapler further includes a handheld handle 9 for driving the reset drive to move and rotate, the handheld handle 9 includes a rotating portion 6 and an axial rod 7 extending along the moving direction of the reset drive, the rotating portion 6 is connected to one end of the axial rod 7, the other end of the axial rod 7 is detachably connected to the reset drive, and the rotating portion 6 drives the reset drive to rotate through the axial rod 7. By providing the handheld handle 9, it is convenient for the operator to operate the reset drive, and the convenience and comfort of operation when the electric stapler is manually reset are increased.

[0045] Specifically, a blind hole 11 is provided on the reset driver, and one end of the axial rod 7 connected to the reset driver is a connecting portion 8, which matches the blind hole 11, and the connecting portion 8 is inserted into the blind hole 11. The axial rod 7 drives the reset driver to rotate through the connecting portion 8. The hand-held handle 9 is connected to the reset driver by inserting the connecting portion 8 into the blind hole 11, which has a simple structure, is easy to operate, and has strong practicality. When the hand-held handle 9 is connected to the reset driver, the operator can press the retracting gear 4 downward through the hand-held handle 9, and the retracting gear 4 is subjected to external thrust and moves along the axial direction of the first gear 3, pushing the first gear 3 to separate from the nail magazine assembly. After the transmission gear is separated from the nail magazine assembly, the operator can rotate the hand-held handle 9 to drive the retracting gear 4 to rotate, thereby driving the nail magazine assembly to move and complete the reset operation.

[0046] like Figures 3 to 7 As shown, in this embodiment, when the electric stapler is in normal use, the retracting gear 4 and the transmission gear are both meshed with the transmission rack, and the first step surface 14 abuts against the abutting surface. When the stapler fails to retract during use, the operator can open the cover plate on the shell, extend the connecting portion 8 of the hand-held handle 9 into the blind hole 11, and connect the hand-held handle 9 to the reset drive member. Then, by pressing the hand-held handle 9, it acts on the reset drive member, and after the abutting portion 17 passes through the limiting groove 15, the second step surface 13 abuts against the abutting surface. At the same time, the retracting gear 4 is subjected to pressure, pushing the transmission gear to separate from the transmission rack, and the transmission rack releases the restriction between the first gear 3. The retracting gear 4 always keeps meshing with the rack during the movement. The operator can drive the retracting gear 4 to move by rotating the hand-held handle 9, and at the same time drive the rack to move, completing the manual reset operation of the electric stapler.

[0047] In summary, by providing a manual reset structure in the electric stapler, when the retraction function of the stapler magazine assembly in the electric stapler fails, the first transmission member can be pushed by the reset drive member to separate the first transmission member from the second transmission member 1. At this time, the reset drive member is connected to the second transmission member 1, and the stapler magazine assembly can be driven back to its original position by the second transmission member 1. The manual reset structure does not need to separately provide a mechanism to separate the first transmission member from the second transmission member 1. The above function can be achieved by replacing the original reset drive member, thereby simplifying the manual reset structure in the existing electric stapler and reducing the manufacturing and production assembly costs of the manual reset structure. In addition, since the manual reset structure is relatively simple, the stability of the manual reset structure during use can be increased. The electric stapler with a manual reset structure has good industrial value and economic benefits.

[0048] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An electric stapler with a manual reset structure, characterized in that: include: A housing, wherein a bracket is disposed in the housing; A nail magazine assembly, wherein the nail magazine assembly is disposed in the housing; A transmission assembly, wherein the transmission assembly is disposed on the bracket, the transmission assembly comprises a first transmission member and a second transmission member, the second transmission member is connected to the nail magazine assembly, and the first transmission member drives the nail magazine assembly through the second transmission member; A reset driving member is movably arranged on the bracket, and the reset driving member has a working position. When the reset driving member moves to the working position, the reset driving member is transmission-connected with the second transmission member and pushes the first transmission member to separate from the second transmission member.

2. The electric stapler with a manual reset structure according to claim 1, characterized in that: The resetting driving member comprises a tool-retracting gear, the first transmission member is a first gear, the tool-retracting gear and the first gear are coaxially arranged, and the tool-retracting gear and the first gear are both arranged along the axial movement of the first gear.

3. The electric stapler with manual reset structure according to claim 2, characterized in that: The reset drive member has a normal position, and the reset drive member is moved from the normal position to the working position. The electric stapler also includes a limiting component arranged in the shell, and the limiting component limits the reset drive member in the normal position or the working position.

4. The electric stapler with a manual reset structure according to claim 3, characterized in that: The limiting assembly includes an abutment claw and an elastic member, the elastic member is located on a side of the first gear away from the retracting gear, the elastic member acts on the first gear along the axial direction of the first gear, the abutment claw is arranged on a side of the retracting gear away from the first gear, and an abutment surface is arranged on an end of the abutment claw close to the retracting gear, the reset driving member includes a clamping portion cooperating with the abutment claw, the clamping portion is arranged on the end surface of the retracting gear away from the first gear, and the clamping portion is provided with a first step surface and a second step surface for cooperating with the abutment surface, when the reset driving member is located in the normal position, the first step surface abuts against the abutment surface, and when the reset driving member is located in the working position, the second step abuts against the abutment surface.

5. The electric stapler with manual reset structure according to claim 4, characterized in that: An end surface of the clamping portion away from the first gear is a first step surface.

6. The electric stapler with a manual reset structure according to claim 4, characterized in that: The elastic member is a spring, and the spring is compressed between the bracket and the first gear along the axial direction of the first gear.

7. The electric stapler with a manual reset structure according to claim 6, characterized in that: The bracket comprises a support shaft, the retracting gear and the first gear are sequentially arranged on the support shaft along the axial direction of the support shaft, and the spring is sleeved on the support shaft.

8. The electric stapler with a manual reset structure according to claim 4, characterized in that: The number of the abutting claws is 2, and the two abutting claws are respectively arranged on two opposite sides of the clamping portion.

9. The electric stapler with a manual reset structure according to claim 8, characterized in that: A limiting groove is provided on the clamping portion, and the limiting groove is arranged in a circle around the clamping portion. The side of the limiting groove facing the first gear is the second step surface. The abutting claw has an abutting portion extending into the limiting groove, and the side of the abutting portion facing the first gear is the abutting surface. Chamfers are provided on the side of the abutting portion away from the first gear and the side of the limiting groove facing the first gear.

10. The electric stapler with a manual reset structure according to any one of claims 5 to 9, characterized in that: The shell has a countersunk hole, the clamping portion is arranged in the countersunk hole, a cover plate is arranged at the countersunk hole, the cover plate is used to cover the countersunk hole, and the cover plate is flush with the outer surface of the shell.

11. The electric stapler with a manual reset structure according to any one of claims 1 to 9, characterized in that: The electric stapler also includes a handheld handle for driving the reset drive member to move and rotate, the handheld handle includes a rotating portion and an axial rod extending along the moving direction of the reset drive member, the rotating portion is connected to one end of the axial rod, and the other end of the axial rod is detachably connected to the reset drive member, and the rotating portion drives the reset drive member to rotate through the axial rod.

12. The electric stapler with a manual reset structure according to claim 11, characterized in that: The reset drive member is provided with a blind hole, and one end of the axial rod connected to the reset drive member is a connecting portion, the connecting portion matches the blind hole, the connecting portion is inserted into the blind hole, and the axial rod drives the reset drive member to rotate through the connecting portion.

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