Emergency retraction operation assembly, emergency retraction device, and electric surgical stapler

Abstract

Provided are an emergency retraction operation assembly, an emergency retraction device, and an electric surgical stapler. The emergency retraction operation assembly comprises: a first operation member comprising a first pivoting part and a first operation part; and a second operation member comprising a second pivoting part, a second operation part, and a retraction driving part. The second pivoting part is rotatably connected to the first pivoting part, such that the operation assembly is switched between a stowed state and an unfolded state, wherein when the operation assembly is in the unfolded state, the first operation part and the second operation part are located on two sides of the retraction driving part, respectively. The emergency retraction operation assembly, when in the stowed state, can be stored to reduce the occupied space, and it can drive an emergency retraction action of the electric surgical stapler when unfolded. During operation, the two operation parts are located on the two sides of the retraction driving part, respectively, allowing for balanced and effort-saving force application during retraction. The assembly features a simple structure and is user-friendly in operation.

Description

Emergency back-off operation assembly, emergency back-off device and electric anastomat TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an emergency back-off operation assembly, an emergency back-off device and an electric anastomat. BACKGROUND

[0002] Electric anastomosers play a vital role in modern surgery, and they achieve rapid cutting and anastomosis of tissues through precise mechanical structures. In these mechanical structures, the emergency back-off structure ensures the emergency operation function of the electric anastomat in case of failure. In existing designs, a single-arm wrench is usually used for emergency back-off operation, and the wrench is stored in the housing of the electric anastomat body when it is not used.

[0003] In existing electric anastomosers, the emergency back-off structure is usually designed to store the emergency back-off wrench in the body. Due to the limitations of the storage space in the body and the interference with the housing during use, the emergency back-off wrench is usually made into a single-arm foldable two-section structure that is stored in the body. When used, the wrench is opened to extend the lever arm to reduce the effect of torsion. However, such a single-arm structure causes unbalanced stress on the wrench during emergency back-off, resulting in unstable instruments when the emergency back-off force is large, which causes secondary damage to the anastomosis in the distal jaw.

[0004] Content of the utility model

[0005] In view of the problems in the prior art, the purpose of the present application is to provide an emergency back-off operation assembly, an emergency back-off device and an electric anastomat. The emergency back-off operation assembly can be stored to reduce the occupied space in the storage state, and can balance and save the applied force during back-off operation when unfolded. The structure is simple and convenient to use.

[0006] The first aspect of the present application provides an emergency back-off operation assembly, comprising:

[0007] The emergency back-off operation assembly for an electric anastomat comprises:

[0008] A first operating member comprising a first pivot connection part and a first operating part;

[0009] A second operating member comprising a second pivot connection part, a second operating part and a back-off driving part, the second pivot connection part being rotatably connected with the first pivot connection part to switch the operating assembly between a storage state and an unfolded state;

[0010] When the operating assembly is in the unfolded state, the first operating part and the second operating part are located on the two sides of the back-off driving part, respectively.

[0011] In some embodiments, the first operation part and the second operation part are located on the same side of the back driving part when the operation assembly is in the storage state.

[0012] In some embodiments, the second pivot part and the back driving part are located on the same end of the second operation member, and the back driving part is located on the side of the second pivot part away from the first pivot part.

[0013] In some embodiments, at least one side surface of the first operation part and / or at least one side surface of the second operation part is provided with an anti-skid structure.

[0014] In some embodiments, the first pivot part is provided with a first clamping structure, and the second pivot part is provided with a second clamping structure matched with the first clamping structure, and the first clamping structure and the second clamping structure form axial fixation.

[0015] In some embodiments, the first operation member is provided with a first stop part, and the second operation member is provided with a second stop part, and the first stop surface of the first stop part abuts against the second stop surface of the second stop part when the operation assembly is in the unfolded state.

[0016] In some embodiments, one of the first stop part and the second stop part is an arc-shaped slot, and the other is a protrusion, and the protrusion is at least partially embedded in the arc-shaped slot.

[0017] In some embodiments, the first stop surface and the second stop surface are respectively provided with an inclination.

[0018] The second aspect of the present application provides an emergency back-off device applied to an electric anastomat, the electric anastomat comprising a shell, the emergency back-off device comprising a power assembly, an actuating member, and the emergency back-off operation assembly of the first aspect, and the emergency back-off operation assembly is configured to be stored inside a cavity of the shell.

[0019] The third aspect of the present application provides an electric anastomat comprising the emergency back-off operation assembly of the first aspect or the emergency back-off device of the second aspect.

[0020] The embodiments of the present application further provide an electric anastomat comprising the emergency back-off operation assembly described above.

[0021] The emergency back-off operation assembly, the emergency back-off device, and the electric anastomat provided by the present application have the following advantages:

[0022] The application provides an emergency fallback operation assembly which switches states by rotating an operation member, can be stored to reduce the occupied space in the storage state, and can drive the emergency fallback action of an electric anastomat in the unfolded state. The first operation part and the second operation part are respectively on the two sides of the fallback driving part during operation, and the force is more balanced, stable and labor-saving. The application can save the applied force during fallback operation, has a simple structure and is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0023] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments with reference to the drawings.

[0024] Fig. 1 is a schematic view of a partial structure of an anastomat body according to an embodiment of the application;

[0025] Fig. 2 is a schematic view of an emergency fallback operation assembly according to an embodiment of the application in a storage state;

[0026] Fig. 3 is a schematic view of an emergency fallback operation assembly according to an embodiment of the application in an unfolded state;

[0027] Fig. 4 is a side view of an emergency fallback operation assembly according to an embodiment of the application;

[0028] Fig. 5 is a bottom view of an emergency fallback operation assembly according to an embodiment of the application;

[0029] Fig. 6 is a top view of an emergency fallback operation assembly according to an embodiment of the application;

[0030] Fig. 7 is a sectional view in the direction of A-A in Fig. 6;

[0031] Fig. 8 is a sectional view in the direction of B-B in Fig. 6;

[0032] Fig. 9 is a sectional view in the direction of C-C in Fig. 6;

[0033] Fig. 10 is a side view of an emergency fallback operation assembly according to an embodiment of the application;

[0034] Fig. 11 is a sectional view in the direction of D-D in Fig. 10.

[0035] Reference numerals: 1 first operating member (upper) 221 second anti-skid structure 11 first pivot joint 222 chamfer 111 buckle 23 second stop portion 12 first operating portion 24 back-off driving portion 121 first anti-skid structure 3 power assembly 13 first stop portion 4 transmission assembly 14 rotation indicating portion 5 actuating member 2 second operating member (lower) 6 housing 21 second pivot joint 7 cavity 211 step portion 8 back-off matching member 22 second operating portion DETAILED DESCRIPTION

[0036] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the specification. Any use of "or" in the present document is meant to encompass both a exclusive or (either but not both) and an inclusive or (any or all). Although the terms "first," "second," "third," etc. can be used in this disclosure to describe various example features and elements, these terms are not intended to denote a particular importance or significance. The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting.

[0037] The application provides an emergency back-off operation assembly, an emergency back-off device and an electric anastomat. The electric anastomat comprises an anastomat body and a cartridge assembly at the distal end of the anastomat body. Fig. 1 is a schematic view of the partial structure of the anastomat body according to an embodiment of the application. As shown in Fig. 1, the anastomat body comprises a housing 6 and an emergency back-off device at least partially located inside the housing 6, wherein the housing 6 is internally provided with a cavity 7. The emergency back-off device comprises a power assembly 3, a transmission assembly 4, an actuating member 5 and the emergency back-off operation assembly, wherein the emergency back-off operation assembly is configured to be accommodated inside the cavity 7 of the housing 6 in a storage state. The power assembly 3 comprises a motor. The transmission assembly 4 comprises at least one transmission gear. The actuating member 5 extends along the axial direction of the anastomat and is movable along the axial direction of the anastomat. The actuating member 5 is provided with a tooth surface on one side. The output shaft of the motor is connected to the actuating member 5 through the transmission assembly 4, and the transmission gear transmits the power of the output shaft of the motor to the actuating member 5. When the power assembly 3 and the transmission assembly 4 are in normal operation, the axial movement of the actuating member 5 can be driven by the motor to realize the normal operation and back-off of the anastomat. When the motor rotates forward, the actuating member 5 is driven to move in the distal direction to realize the closing and firing of the anastomat. When the motor reverses, the actuating member 5 is driven to move in the proximal direction to realize the back-off of the anastomat. The transmission assembly 4 further comprises a back-off matching member 8, which is a shaft penetrating through a gear of the transmission assembly 4. When the power assembly 3 fails or the transmission assembly 4 fails, the normal back-off of the anastomat cannot be realized by the motor. In this case, the emergency back-off operation assembly can be connected with the back-off matching member 8 and drive the back-off matching member 8 to rotate to realize manual emergency back-off.

[0038] In the present application, the distal end and the proximal end are relative to the operator, the end closer to the operator is the proximal end, the end farther from the operator, i.e. the end closer to the surgical position, is the distal end, and the direction along the axis of the anastomat is the axial direction, i.e. the direction from the distal end to the proximal end of the anastomat or the direction from the proximal end to the distal end of the anastomat. For example, in the view of Fig. 1, the right side is the distal end side of the anastomat, and the left side is the proximal end side of the anastomat.

[0039] As shown in FIG. 2 and FIG. 3, the emergency fallback operation assembly comprises a first operation member 1 and a second operation member 2. The first operation member 1 comprises a first pivot part 11 and a first operation part 12. The second operation member 2 comprises a second pivot part 21, a second operation part 22 and a fallback driving part 24. The fallback driving part 24 comprises an internal hexagonal bolt hole. The top of the fallback matching member 8 is provided with a nut part matched with the fallback driving part 24. When the emergency fallback operation assembly is needed to be used for manual emergency fallback, the fallback driving part 24 is sleeved on the top of the fallback matching member 8 (shown in FIG. 1), so that the non-rotatable connection between the two is achieved, the operation assembly is rotated, the fallback matching member 8 is driven by the fallback driving part 24, and then the actuating member 5 is driven to rotate by the gear. Therefore, in this embodiment, the internal hexagonal bolt hole is arranged on the fallback driving part 24, which is directly sleeved on the top of the fallback matching member 8 for use, and the operation is very convenient.

[0040] The second pivot joint 21 is rotatably connected with the first pivot joint 11 to switch the operation assembly between the storage state and the unfolded state. Fig. 2 shows the storage state of the operation assembly. When the operation assembly is in the storage state, the first operation part 12 and the second operation part 22 are located on the same side of the back driving part 24, and the first operation part 12 and the second operation part 22 are at least partially side by side, so that the overall volume of the operation assembly is reduced. In this case, the operation assembly can be stored in the cavity 7 of the shell 6 without occupying additional space, and it is not necessary to provide a separate package for the operation assembly, which is very convenient for storage and transportation. When it is needed to use, the operation assembly is taken out from the cavity 7 of the shell 6 (shown in Fig. 1), and the second operation part 22 is rotated relative to the first operation part 12 to unfold the operation assembly. Fig. 3 shows the unfolded state of the operation assembly. When the operation assembly is in the unfolded state, the first operation part 12 and the second operation part 22 are located on the two sides of the back driving part 24, respectively, to form a substantially balanced and symmetrical structure relative to the back driving part 24. In the unfolded state, the emergency back operation assembly is inserted into the opening of the shell 6 at least partially, and the back driving part 24 is sleeved on the top of the back matching part 8. In this case, the second operation part 2 is located below, and the first operation part 1 is located above. The doctor can drive the back matching part 8 to rotate by exerting a force on the first operation part 12 and the second operation part 22 in a specified direction, so that the gear engaged with the actuating part 5 is rotated, and the actuating part 5 is driven to move in the proximal direction, thereby realizing manual emergency back. In the operation, since the first operation part 12 and the second operation part 22 are located on the two sides of the back driving part 24, respectively, the first operation part 1 and the second operation part 2 form two balanced operation arms, which are more balanced, stable and labor-saving than the single-arm wrench in the prior art. The force exerted by the doctor on the operation assembly during back operation can be saved, the structure is simple, and the use is convenient.

[0041] As shown in Figs. 3-6, the second pivot joint 21 and the back driving part 24 are arranged on the same end of the second operation part 2, and the back driving part 24 is located on the side of the second pivot joint 21 away from the first pivot joint 11. When the operation assembly is in the unfolded state, the first operation part 1 and the second operation part 2 form a 180-degree angle to form a substantially symmetrical two-arm structure relative to the back driving part 24 at the central position. The operation assembly in the unfolded state forms a symmetrical two-wing two-arm structure, so that it is balanced, stable and labor-saving when force is exerted, and half of the torque can be saved compared with the single-arm wrench.

[0042] As shown in FIG. 3-5, at least one side of the first operation part 12 is provided with a first anti-skid structure 121. At least one side of the second operation part 22 is provided with a second anti-skid structure 221. The first anti-skid structure 121 and the second anti-skid structure 221 are symmetrically arranged with respect to the center position. The first anti-skid structure 121 and the second anti-skid structure 221 are provided as concave-convex structures for example. When the doctor operates, the doctor can place the hand on the first anti-skid structure 121 and the second anti-skid structure 221, which is more convenient for operation, prevents the hand from slipping and separating from the operation assembly, and improves the stability of the actuating member in the return process. As shown in FIG. 5, the second operation part 22 is provided with a chamfer 222, which facilitates the doctor to operate the second operation part 2 to rotate to unfold the operation assembly. Specifically, when the operation assembly is in the storage state, the first operation part 12 and the second operation part 22 are located on the same side of the return driving part 24, and the first operation part 12 and the second operation part 22 are attached. When the doctor needs to use it, an acting force is applied at the chamfer 222 position, so that the second operation part 22 rotates relative to the first operation part 12, so that the operation assembly can be more conveniently opened. As shown in FIG. 6, the top surface of the first pivot part 11 of the first operation part 12 is provided with a rotation indicating part 14. The rotation indicating part 14 includes an arrow. The arrow indicates the doctor's operation rotation direction when the operation assembly is used for return operation. By providing the rotation indicating part 14, the doctor's misoperation can be avoided, and the doctor's operation direction is prevented from being reversed to move the actuating member 5 in the distal direction.

[0043] As shown in FIG. 6 and FIG. 7, the first pivot part 11 is provided with a first clamping structure, and the second pivot part 21 is provided with a second clamping structure matched with the first clamping structure, and the first clamping structure and the second clamping structure form axial fixation. In this embodiment, the second pivot part 21 is provided with a cavity, and the first clamping mechanism includes at least one buckle 111, and the buckle 111 is at least partially located inside the cavity. The second clamping structure includes a stepped portion 211 on the inner wall of the cavity. The buckle 111 is clamped on the stepped portion 211, which realizes the axial fixation of the first pivot part 1111 and the second pivot part 2121, and prevents the second pivot part 2121 from being separated from the first pivot part 1111 downwardly when the operation assembly is used. In other alternative embodiments, the first clamping structure can be a stepped portion, and the second clamping structure can be a buckle, which form axial fixation, and also belong to the protection scope of the present application.

[0044] As shown in FIGS. 8-10, the first operating member 1 is provided with a first stop portion 13, and the second operating member 2 is provided with a second stop portion 23. When the operating assembly is in the unfolded state, the first stop portion 13 abuts against the second stop portion 23 to prevent the unfolding angle of the operating assembly from being too large. One of the first stop portion 13 and the second stop portion 23 is an arc-shaped groove, and the other is a protrusion which is at least partially embedded in the arc-shaped groove. In FIG. 11, the first stop portion 13 is the arc-shaped groove, and the second stop portion 23 is the protrusion. When the operating assembly is in the storage state, the protrusion abuts against the first end (lower end in FIG. 11) of the arc-shaped groove. When the operating assembly is in the unfolded state, the protrusion abuts against the second end (upper end in FIG. 11) of the arc-shaped groove to prevent the unfolding angle between the first operating member 1 and the second operating member 2 from being too large, and to facilitate maintaining the first operating member 1 and the second operating member 2 in a state of being 180 degrees apart, thereby improving the operation stability during use.

[0045] As shown in FIGS. 9 and 11, the first stop portion 13 includes an inclined circumferential first stop surface, and the second stop portion 23 includes an inclined second stop surface. The first stop surface and the second stop surface are inverse inclined surfaces. When the first stop surface and the second stop surface abut against each other at the position a shown in the figure, the second operating member 2 is blocked from moving away from the first operating member 1. This prevents the second operating member 2 from being separated downward from the first operating member 1 during use of the operating assembly. In another embodiment, a clamping structure can also be provided at the first stop surface and the second stop surface to ensure the axial position stability of the first operating member 1 and the second operating member 2, and to prevent the second operating member 2 from being separated downward from the first operating member 1 during use of the operating assembly.

[0046] In this embodiment, only a structure of the rollback driving portion 24 is exemplarily shown. In another embodiment, the rollback driving portion 24 and the rollback cooperating member 8 can also adopt other cooperating structures, such as that the inner wall of the rollback driving portion 24 is provided with a protrusion, the surface of the rollback cooperating member 8 is provided with a groove, the protrusion is embedded in the groove, or the rollback driving portion 24 and the rollback cooperating member 8 are connected through thread cooperation, etc., all of which are within the protection scope of the present application.

[0047] In summary, the present application provides an emergency rollback operating assembly which switches states through rotating operating members. In the storage state, the operating assembly can be stored to reduce the occupied space. In the unfolded state, the rollback driving portion 24 can drive the emergency rollback action of the electric anastomat. In addition, during operation, the first operating portion 12 and the second operating portion 22 are respectively located on the two sides of the rollback driving portion 24, so that the force is more balanced, stable and labor-saving, the applied force during rollback operation can be saved, the structure is simple, and the use is convenient.

[0048] The above description is further detailed in combination with specific preferred embodiments of the present application, and cannot be deemed to limit the specific implementation of the present application to these descriptions. For those of ordinary skill in the art to which the present application belongs, several simple deductions or replacements can be made without departing from the concept of the present application, and all of them shall be deemed to fall within the protection scope of the present application.

Claims

1. An emergency fallback operation component, characterized by, The emergency back-off operation assembly for the electric anastomat comprises: a first operation member comprising a first pivot joint and a first operation part; a second operation member comprising a second pivot joint, a second operation part and a back-off driving part, the second pivot joint being rotatably connected with the first pivot joint to switch the operation assembly between a storage state and a deployment state; wherein the first operation part and the second operation part are located on two sides of the back-off driving part when the operation assembly is in the deployment state.

2. The emergency fallback operation component of claim 1, wherein, The first operation part and the second operation part are located on the same side of the back-off driving part when the operation assembly is in the storage state.

3. The emergency fallback operation component of claim 1, wherein, The second pivot joint and the back-off driving part are arranged at the same end of the second operation member, and the back-off driving part is located on the side of the second pivot joint away from the first pivot joint.

4. The emergency fallback operation component of claim 1, wherein, At least one side surface of the first operation part and / or at least one side surface of the second operation part is provided with an anti-slip structure.

5. The emergency fallback operation component of claim 1, wherein, The first pivot joint is provided with a first clamping structure, and the second pivot joint is provided with a second clamping structure matched with the first clamping structure, the first clamping structure and the second clamping structure forming axial fixation.

6. The emergency fallback operation component of claim 1, wherein, The first operation member is provided with a first stop part, and the second operation member is provided with a second stop part, the first stop surface of the first stop part abutting against the second stop surface of the second stop part when the operation assembly is in the deployment state.

7. The emergency fallback operation component of claim 6, wherein, One of the first stop part and the second stop part is an arc-shaped groove, and the other is a protrusion, the protrusion being at least partially embedded in the arc-shaped groove.

8. The emergency fallback operation component of claim 6, wherein, The first stop surface and the second stop surface are respectively arranged to be inclined.

9. An emergency fallback device, characterized by The emergency back-off device applied to the electric anastomat comprises a power assembly, an actuating member and the emergency back-off operation assembly according to any one of claims 1 to 8, the emergency back-off operation assembly being configured to be stored inside a cavity of the housing.

10. An electrically powered anastomosis device, comprising: The emergency back-off operation assembly according to any one of claims 1 to 8 or the emergency back-off device according to claim 9.

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