Emergency rollback operating part, emergency rollback device and surgical anastomat

Abstract

The utility model provides an emergency rollback operation piece, an emergency rollback device and a surgical anastomat, the surgical anastomat comprises a body shell, a transmission piece and a driving transmission assembly, the transmission piece and the driving transmission assembly are at least partially located in the body shell, the body shell is provided with a shell opening, and the driving transmission assembly comprises a driving piece; the emergency retreating operation piece comprises a cover body, a first driving part and at least one connecting part, the cover body is detachably installed at the shell opening through the connecting part, and the cover body at least partially covers the shell opening; and after the emergency retreating operation piece is separated from the body shell, the first driving part is configured to penetrate through the shell opening to be connected with the driving piece, and the driving transmission assembly drives the transmission piece to move in the near-end direction. The emergency rollback operation piece is simple in structure, and the emergency rollback operation piece can serve as a hole cover of a body shell and can be taken down to achieve the emergency rollback function.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an emergency retraction operating member, an emergency retraction device and a surgical stapler. Background Art

[0002] In traditional surgical staplers, doctors need to apply a lot of force to drive the firing of the stapler. In order to facilitate the use of doctors and improve the controllability of the firing process, electric staplers are increasingly widely used in surgical operations. Electric staplers are surgical instruments used for tissue anastomosis and resection. They generally achieve tissue clamping and cutting through precise mechanical structures and are widely used in surgical operations. Electric staplers generally include a stapler body and an actuator connected to the distal end of the stapler body. A transmission member that drives the actuator to fire and a drive transmission assembly that drives the transmission member to move axially are provided in the stapler body. When the stapler is fired, the drive transmission assembly can provide power to drive the transmission member to move in the distal direction.

[0003] However, once the electric stapler fails, the transmission part may not be able to retract after the firing is completed. Based on this, an emergency retraction handle has appeared in the prior art. When not in use, the emergency retraction handle is stored on the frame inside the main body shell. When in use, the emergency retraction handle is removed and cooperated with the drive transmission component to realize the emergency retraction operation. The emergency retraction handle is stored in the body of the device, and occupies part of the structure of the frame. The avoidance part in the frame structure reduces the structural strength of the frame. In addition, since the frame is generally an injection molded part, the added structural design also brings additional considerations for the demoulding of plastic parts during the manufacturing process of the frame. In addition, in order to fix the emergency retraction handle, an additional fixing structure needs to be set on the main body shell, which also increases the structural complexity of the main body shell. In addition, the emergency retraction handle will occupy the volume of the internal cavity of the main body shell, and may interfere with other components. In order to ensure that the normal function of the stapler is not affected, other components need to be designed to avoid, which also increases the difficulty of the stapler structure design. Utility Model Content

[0004] In response to the problems in the prior art, the purpose of the present application is to provide an emergency retraction operating member, an emergency retraction device and a surgical stapler, and to provide an emergency retraction operating member with a simple structure, which can be used as a hole cover of the main body shell and can be removed to realize the emergency retraction function, does not increase the complexity of the main body shell and the frame, and is easy to use.

[0005] A first aspect of the present application provides an emergency retraction operating member for a surgical stapler, the surgical stapler comprising a main body shell and a transmission member and a drive transmission assembly at least partially located in the main body shell, the main body shell being provided with a shell opening, and the drive transmission assembly comprising a driving member; the emergency retraction operating member comprising a cover body, a first driving portion and at least one connecting portion, the cover body being detachably mounted at the shell opening via the connecting portion, and the cover body at least partially covering the shell opening; wherein the first driving portion is configured to be connectable to the driving member through the shell opening, and when the first driving portion drives the driving member to move in a first direction, the drive transmission assembly drives the transmission member to move in a proximal direction.

[0006] In some embodiments, the cover body, the connecting portion and the first driving portion are an integrally formed structure.

[0007] In some embodiments, the driving member is connected to the first driving portion via threads.

[0008] In some embodiments, the drive transmission assembly further includes a drive transmission gear, the drive member is inserted through the drive transmission gear and is parallel to the longitudinal direction, and the housing opening is aligned with the drive member in the longitudinal direction.

[0009] In some embodiments, when the cover body is installed in the shell opening, the first driving portion is located at one axial end of the cover body; when the first driving portion is connected to the driving member, the cover body is at least partially located outside the main body shell.

[0010] In some embodiments, a boss is provided at one axial end of the cover body, the boss is provided on a side of the cover body facing the inner cavity of the main body shell, and the first driving part is provided on a first end surface of the boss.

[0011] In some embodiments, the shape of the cover body is adapted to the shape of the shell opening.

[0012] In some embodiments, the connecting portion includes a first connecting portion provided at one end of the cover body, the first connecting portion includes a first wall and a second wall connected by an elastic bending portion, the second wall is located on the outside of the first wall, and at least one clamping portion is provided on the outer surface of the second wall.

[0013] The second aspect of the present application further provides an emergency retraction device, comprising a transmission member, a drive transmission assembly, and the emergency retraction operating member described in the first aspect.

[0014] The third aspect of the present application further provides a surgical stapler, comprising the emergency retraction operating member described in the first aspect or the emergency retraction device described in the second aspect.

[0015] The emergency retraction operating member, emergency retraction device and surgical stapler provided by the present application have the following advantages:

[0016] The present application provides an emergency retraction operating member with a simple structure. When not in use, the emergency retraction operating member can be fixed at the shell opening of the main body shell of the stapler body, and at least partially covers the shell opening, thereby serving as a hole cover of the main body shell. It does not occupy additional space in the cavity inside the main body shell, nor does it invade the frame inside the main body shell. It has little impact on the main body shell and the frame, and does not increase the structural complexity of the main body shell and the frame. When the emergency retraction function needs to be implemented, the doctor removes the emergency retraction operating member from the main body shell, and the shell opening can expose part of the inner cavity inside the main body shell, so that the first driving member is connected to the driving member after passing through the shell opening, and the first driving member is operated. When the driving member is driven to move by the driving member, the transmission member can be driven to move in the proximal direction to implement emergency retraction, and the operation and use are very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.

[0018] Figure 1 is a schematic structural diagram of a stapler body according to an embodiment of the present application;

[0019] Figure 2 It is a schematic diagram of the coordination of various components in the stapler body according to one embodiment of the present application;

[0020] Figure 3 It is a schematic diagram of the cooperation between the main body housing, the drive transmission assembly and the transmission member according to an embodiment of the present application;

[0021] Figure 4 This is a schematic diagram of an emergency retraction operating member and a driving member in cooperation with each other in one embodiment of the present application;

[0022] Figure 5 and Figure 6 This is a schematic structural diagram of an emergency retraction operating member according to an embodiment of the present application;

[0023] Figure 7 It is a schematic diagram of the emergency retraction operating member and the drive transmission assembly after the transmission member is reset in one embodiment of the present application.

[0024] Reference numerals:

[0025] 1 Main body shell 4113 Second wall

[0026] 11 Shell opening 4114 Clamping portion

[0027] 2 Transmission part 4115 Support part

[0028] 21 rack surface 42 second connection portion

[0029] 3 Drive transmission assembly 43 Cover body

[0030] 31 drive transmission gear 44 boss

[0031] 32 driving member 441 first end surface

[0032] 321 Second driving unit 442 First driving unit

[0033] 4 Emergency retraction operating parts 6 Power components

[0034] 41 first connection portion 61 motor

[0035] 4111 First wall 62 Motor drive gear

[0036] 4112 Elastic bending part DETAILED DESCRIPTION

[0037] Example embodiments will now be described more fully. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; on the contrary, these embodiments are provided so that the present application will be comprehensive and complete, and the concept of the example embodiments will be fully conveyed to those skilled in the art. "Or" and "or" in the specification may both mean "and" or "or". Although the terms "upper", "lower", "between", etc. may be used in this specification to describe different exemplary features and elements of the present application, these terms are used herein only for convenience, such as according to the directions of the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional direction of the structure to fall within the scope of the present application. Although "first" or "second" etc. are used in this specification to represent certain features, they are only used to represent the function, and are not used as a limitation on the number and importance of specific features.

[0038] The present application provides an emergency retraction operating member, an emergency retraction device and a surgical stapler. The surgical stapler includes a main body shell and a transmission member and a drive transmission assembly at least partially located in the main body shell. The emergency retraction device includes the emergency retraction operating member, the transmission member and the drive transmission assembly. The main body shell is provided with a shell opening, and the drive transmission assembly includes a driving member. The emergency retraction operating member includes a cover body, a first driving part and at least one connecting part, and the cover body is detachably mounted at the shell opening through the connecting part, and the cover body at least partially covers the shell opening. Therefore, when the emergency retraction operating member is not needed, the emergency retraction operating member is installed on the shell opening of the main body shell as a hole cover of the main body shell, which will not occupy the space of the cavity in the main body shell, nor will it invade the frame inside the main body shell, and the impact on the main body shell and the frame is small, and the structural complexity of the main body shell and the frame will not be increased.

[0039] When the emergency retraction function needs to be implemented, after the doctor separates the emergency retraction operating member from the main body shell, the shell opening can expose part of the inner cavity inside the main body shell, so that the first driving part can pass through the shell opening and connect with the driving member, and by operating the emergency retraction operating member, when the first driving part drives the driving member to move along the first direction, the drive transmission assembly drives the transmission member to move in the proximal direction, thereby realizing the emergency retraction of the anastomosis device, and the operation and use are very convenient.

[0040] The structure of the emergency retraction device of each specific embodiment of the present application is described in detail below with reference to the accompanying drawings. It can be understood that the various specific embodiments are not intended to limit the scope of protection of the present application. The same figure marks in the figures represent the same or similar structures, and thus their repeated descriptions will be omitted. In the present application, the distal side and the proximal side are relative to the operator, the end closer to the operator is the proximal end, and the end farther from the operator, that is, the end closer to the surgical site is the distal end, and the direction along the axis of the stapler is the axial direction, that is, the direction from the distal side to the proximal side of the stapler, or from the proximal side to the distal side of the stapler. For example, in Figure 1 In the perspective of the present invention, the S1 direction is from the distal end to the proximal end, the S2 direction is the lateral direction, and the S3 direction is the longitudinal direction. In the present application, for a component, the inner side and the outer side are relative to the center of the component, the side close to the center of the component is the inner side, and the side away from the center of the component is the outer side.

[0041] The embodiment of the present application provides an emergency retraction operating member, an emergency retraction device and a surgical stapler. The surgical stapler comprises a stapler body and an actuator disposed at the distal end of the stapler body. Figure 1 and Figure 2The structure of the stapler body of an embodiment of the present application is shown. The stapler body includes the emergency retraction device. The emergency retraction device includes the emergency retraction operating member 4 and a transmission member 2 and a drive transmission assembly 3 at least partially located in the body shell 1. Figures 2 to 4 The main body shell 1 is made transparent to clearly show its internal structure. Figures 1 to 4 As shown, the body shell 1 is provided with a shell opening 11, and a rack surface 21 is provided on one side of the transmission member 2. The drive transmission assembly 3 includes a drive transmission gear 31 and a drive member 32, the drive transmission gear 31 is meshed with the rack surface 21 of the transmission member 2, and the drive member 32 is inserted into the drive transmission gear 31 and forms a non-rotatable connection with the drive transmission gear 31. The following is an example of the surgical stapler being an electric stapler, and the stapler body also includes a power assembly 6, but the present application is not limited thereto, and the surgical stapler of the present application can also be a manual stapler. In this embodiment, the power assembly 6 includes a motor 61 and a motor drive gear 62, and the motor drive gear 62 is connected to the output shaft of the motor 61. The motor drive gear 62 is meshed with the drive transmission gear 31. When the various components of the stapler are working normally, the firing and retraction of the stapler can be realized by the power assembly 6. Specifically, after the stapler is ready to fire, the drive motor 61 rotates forward, and the motor 61 drives the transmission member 2 to move in the distal direction through the motor drive gear 62 and the drive transmission gear 31 in turn, and the transmission member 2 drives the actuator to perform the tissue suturing and cutting action through its distal firing assembly to achieve the firing of the stapler. After the stapler is fired, the drive motor 61 is reversed, and the motor 61 drives the transmission member 2 to move in the proximal direction through the motor drive gear 62 and the drive transmission gear 31 in turn, completing the normal retraction of the stapler.

[0042] During use, the normal retraction function of the stapler may not be realized due to a fault, such as a fault in the motor 61, or an abnormality in the transmission relationship between the motor 61 and the motor drive gear 62, or an abnormality in the transmission relationship between the motor drive gear 62 and the drive transmission gear 31. In this case, the emergency retraction operating member 4 can be used to realize the emergency retraction of the stapler. The emergency retraction operating member 4 includes a cover body 43, a first drive portion 442 and at least one connecting portion. Figure 1 and Figure 6 It can be seen that when the cover body 43 is installed on the shell body, the first driving part 442 is located at one axial end of the cover body 43, and the connecting part includes a first connecting part 41 and a second connecting part 42, which are respectively arranged at two axial ends of the cover body 43. Figure 1 The storage status shown and Figure 4 As shown in the usage status. Figure 1As shown, in the storage state, the cover body 43 is detachably mounted on the housing opening 11 (shown in FIG. 1 ) through the first connecting portion 41 and the second connecting portion 42. Figure 2 ), the cover body 43 at least partially covers the shell opening 11. Therefore, when the emergency retracting operating member 4 is not needed, the emergency retracting operating member 4 is installed on the shell opening 11 of the main body shell 1 as a hole cover of the main body shell 1, which does not occupy the space of the cavity in the main body shell 1, nor does it invade the frame inside the main body shell 1, has little impact on the main body shell 1 and the frame, and does not increase the structural complexity of the main body shell 1 and the frame. The overall structure is simple and the manufacturing process is simple.

[0043] When emergency fallback function is needed, Figure 2 As shown, the doctor separates the emergency retraction operating member 4 from the main body shell 1, and the shell opening 11 is not covered by the cover body 43, and a part of the internal cavity is exposed. Figure 2 and Figure 3 As shown, the driving member 32 is parallel to the longitudinal direction, and a second driving portion 321 is provided on the top of the driving member 32. The housing opening 11 is provided on the top of the main housing 1, and is aligned with the second driving portion 321 of the driving member 32 in the longitudinal direction. The emergency retraction operating member 4 is detachably matched with the main housing 1 as an end cover of the main housing 1. Figure 3 and Figure 4 As shown, the doctor operates the emergency retreat operating member 4 to connect the first driving portion 442 at one end of the emergency retreat operating member 4 to the second driving portion 321, and then rotates the driving member 32 so that the driving member 32 moves in a certain direction (in Figure 2 The driving member 32 drives the transmission member 2 to move in the proximal direction until it reaches the most proximal position of the transmission member 2 (e.g. Figure 7 As shown), the emergency retraction function is realized, and the operation is very convenient. Therefore, in this embodiment, when the driving transmission gear 31 drives the transmission member 2 to move in the proximal direction, the rotation direction of the driving member 32 is the first direction mentioned above, and a non-relatively rotatable connection is formed between the first driving part 442 and the second driving part 321, and the second driving part 321 can be driven to rotate by the first driving part 442. For example, the first driving part 442 and the second driving part 321 are connected by a threaded connection, or the first driving part 442 and the second driving part 321 are connected by an embedded slider and rail structure, etc., so that the first driving part 442 and the second driving part 321 can rotate synchronously after the connection, and the first driving part 442 can be detached from the second driving part 321 from the top, all of which fall within the protection scope of the present application.

[0044] like Figure 2 and Figure 4As shown, the dimensions of the emergency retracting operating member 4 and the shell opening 11 need to satisfy the following requirements: the total length of the emergency retracting operating member 4 (the axial length of the emergency retracting operating member 4 when installed in the main body shell 1) is greater than the height between the shell opening 11 and the second driving portion 321, so that after the emergency retracting operating member 4 is erected and connected to the second driving portion 321, the emergency retracting operating member 4 is at least partially exposed outside the shell, which is convenient for doctors to operate by hand outside the shell, making it more convenient to use. The maximum values ​​of the width and thickness of the portion of the emergency retracting operating member 4 extending into the shell opening 11 (the transverse width and longitudinal thickness of the emergency retracting operating member 4 when installed in the main body shell 1) are both less than the minimum value of the opening size of the shell opening 11, so that the emergency retracting operating member 4 can smoothly pass through the shell opening 11, and after being inserted into the shell opening 11, the emergency retracting operating member 4 can freely rotate in the shell opening 11 without interfering with the inner wall of the shell opening 11.

[0045] Combine the following Figure 2 , Figure 5 and Figure 6 The structure of the emergency retraction operating member 4 in this embodiment is specifically described. A boss 44 is provided at one axial end of the cover body 43. The boss 44 is provided on the side of the cover body 43 facing the inner cavity of the main body shell 1. The boss 44 includes a first end face 441. The first driving part 442 is provided on the first end face 441 of the boss 44. When the cover body 43 is installed on the main body shell 1, the first end face 441 is perpendicular to the axial direction. When the cover body 43 is removed from the main body shell 1 and the first driving part 442 is connected to the second driving part, the first end face 441 is perpendicular to the longitudinal direction. The shape of the cover body 43 is adapted to the shape of the shell opening 11, so that the cover body 43 covers the shell opening 11 as a whole. In this embodiment, the cover body 43, the first connecting part 41, the second connecting part 42 and the first driving part 442 are an integrally formed structure. However, the present application is not limited thereto. In another embodiment, one or more of the cover body 43, the first connecting portion 41, the second connecting portion 42 and the first driving portion 442 may not be integrally formed and are fixedly connected to each other, which also falls within the protection scope of the present application. Figure 5 and Figure 6As shown, the first connecting portion 41 includes a first wall 4111 and a second wall 4113, the second wall 4113 is connected to the first wall 4111 via an elastic bending portion 4112, the second wall 4113 is located on the outside of the first wall 4111, and at least one clamping portion 4114 is provided on the outer surface of the second wall 4113. When the emergency retracting operating member 4 is connected to the main body shell 1, the second connecting portion 42 is first installed at the proximal end of the shell opening 11, and then the first connecting portion 41 is inserted into the distal end of the shell opening 11. During the insertion process, the second wall 4113 is first subjected to the force of the inner wall of the shell opening 11 and moves toward the first wall 4111, so that the elastic bending portion 4112 is elastically deformed, and the overall volume of the first connecting portion 41 becomes smaller and it is easier to enter the shell opening 11. Then, under the elastic deformation recovery force of the elastic bending portion 4112, the second wall 4113 moves outward and is clamped with the inner wall of the shell opening 11 through the clamping portion 4114, fixing the first connecting portion 41 at the distal end of the shell opening 11. A support portion 4115 is also provided on the proximal side of the first wall 4111 to provide support for the first wall 4111, so that the structure of the first connecting portion 41 is more solid and stable. The structures of the first connection part 41, the second connection part 42 and the first driving part 442 are only examples. Without violating the core idea of ​​the present application, there may be other various deformations, all of which are within the protection scope of the present application. For example, the first connection part 41 is not elastic and the second connection part 42 is elastic, or the first connection part 41 and the second connection part 42 are both elastic, or the first connection part 41 and the second connection part 42 are arranged on the left and right sides of the cover body 43. The boss 44 can also be arranged at other positions of the cover body 43, such as at the far end of the cover body 43, or at the left or right side of the cover body 43, or the thickness of one end face of the cover body 43 can be thickened and the first driving part 442 can be directly arranged on the end face of the cover body 43.

[0046] The above content is a further detailed description of the present application in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. An emergency retraction operating member, characterized in that: For a surgical stapler, the surgical stapler comprises a body shell, and a transmission member and a drive transmission assembly at least partially located in the body shell, the body shell is provided with a shell opening, and the drive transmission assembly comprises a drive member; The emergency retraction operating member comprises a cover body, a first driving portion and at least one connecting portion, the cover body is detachably mounted at the housing opening through the connecting portion, and the cover body at least partially covers the housing opening; Wherein, the first driving part is configured to pass through the shell opening to connect with the driving member, and when the first driving part drives the driving member to move along the first direction, the drive transmission assembly drives the transmission member to move in the proximal direction.

2. The emergency retraction operating member according to claim 1, characterized in that: The cover body, the connecting portion and the first driving portion are an integrally formed structure.

3. The emergency retraction operating member according to claim 1, characterized in that: The driving member is connected to the first driving portion via threads.

4. The emergency retraction operating member according to claim 1, characterized in that: The drive transmission assembly further includes a drive transmission gear, the drive member is inserted through the drive transmission gear and is parallel to the longitudinal direction, and the housing opening is aligned with the drive member in the longitudinal direction.

5. The emergency retraction operating member according to claim 1, characterized in that: When the cover body is installed in the shell opening, the first driving part is located at one axial end of the cover body; when the first driving part is connected to the driving member, the cover body is at least partially located outside the body shell.

6. The emergency retraction operating member according to claim 5, characterized in that: A boss is provided at one axial end of the cover body, the boss is provided on a side of the cover body facing the inner cavity of the main body shell, and the first driving part is provided on a first end surface of the boss.

7. The emergency retraction operating member according to claim 1, characterized in that: The shape of the cover body is adapted to the shape of the shell opening.

8. The emergency retraction operating member according to claim 1, characterized in that: The connecting portion includes a first connecting portion arranged at one end of the cover body, the first connecting portion includes a first wall and a second wall connected by an elastic bending portion, the second wall is located outside the first wall, and the outer surface of the second wall is provided with at least one clamping portion.

9. An emergency retreat device, characterized in that: It comprises a transmission member, a drive transmission assembly and the emergency retraction operating member according to any one of claims 1 to 8.

10. A surgical stapler, characterized in that: It comprises the emergency retraction operating member according to any one of claims 1 to 8 or the emergency retraction device according to claim 9.

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