Emergency rollback operation assembly, emergency rollback device and surgical anastomat

Abstract

The utility model provides an emergency rollback operation assembly, an emergency rollback device and a surgical anastomat, the surgical anastomat comprises a shell, a driving assembly and a transmission part, the driving assembly and the transmission part are at least partially located in the shell, and the driving assembly comprises a matching part; the emergency rollback operation assembly comprises a cover body which is detachably installed on the shell; the rollback handle comprises a first driving part, and when the rollback handle and the cover body are in a connected state, the rollback handle is detachably fixed to the first side of the cover body; wherein the first driving part of the retreating handle is connected with the matching piece, and when the retreating handle is driven to move in the first direction, the driving assembly is configured to drive the transmission piece to move in the near-end direction. According to the invention, the rack and the shell do not need to additionally design a fixing structure of the back-off handle, so that the structures of the rack and the shell are simplified.

Description

Technical Field

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

[0002] Electric staplers play a vital role in modern surgical operations. They achieve rapid cutting and stapling of tissues through precise mechanical structures. Among these mechanical structures, the emergency retraction structure ensures the emergency operation function of the electric stapler in the event of failure. In existing designs, retraction handle-like parts are usually used for emergency retraction drive operations. The design of the emergency retraction structure in existing electric staplers usually accommodates the retraction handle inside the body of the stapler, encroaching on the structure of the frame inside the body. The part of the frame structure that avoids the retraction handle reduces the structural strength of the frame. Because the frame is generally an injection molded part, the added structural design also brings additional considerations for the demolding of plastic parts during the manufacturing process of the frame. In addition, in order to fix the retraction handle, it is necessary to additionally set a positioning and fixing structure for the retraction handle on the outer shell of the stapler, which also increases the structural complexity of the outer shell and makes the production process more complicated. Utility Model Content

[0003] In response to the problems in the prior art, the purpose of the present application is to provide an emergency retraction operating assembly, an emergency retraction device and a surgical stapler, in which the retraction handle is detachably stored on the cover body, and the cover body is detachably mounted on the outer shell. The frame and the outer shell do not need to be additionally designed with a fixing structure for the retraction handle, thereby simplifying the structure of the frame and the outer shell, and avoiding occupying the frame structure and reducing the strength of the frame.

[0004] A first aspect of the present application provides an emergency retraction operating assembly for a surgical stapler, the surgical stapler comprising a housing, a drive assembly and a transmission member, the drive assembly and the transmission member being at least partially located inside the housing, the drive assembly comprising a mating member; the emergency retraction operating assembly comprising: a cover body detachably mounted on the housing; a retraction handle comprising a first drive portion, the retraction handle being detachably fixed to a first side of the cover body; wherein the first drive portion of the retraction handle is connected to the mating member and when the retraction handle is driven to move in a first direction, the drive assembly is configured to drive the transmission member to move in a proximal direction.

[0005] In some embodiments, the shell is provided with a window, the cover is detachably mounted on the window, and the first side of the cover is a side of the cover facing the inner cavity of the shell.

[0006] In some embodiments, the second direction is the longitudinal direction of the stapler, the window is opened at the top of the shell, and the window and the matching piece are arranged opposite to each other in the longitudinal direction.

[0007] In some embodiments, first mounting portions and second mounting portions are respectively provided at two ends of the cover body. At least a part of the first mounting portion and / or the second mounting portion has elasticity. The first mounting portion and the second mounting portion are detachably mounted on inner walls at two ends of the window.

[0008] In some embodiments, the retraction handle includes a protruding portion. A first driving portion is provided on one side of the protruding portion. The protruding portion is configured to at least partially pass through the window and enter the inner cavity of the housing.

[0009] In some embodiments, the retraction handle includes a first arm and a second arm. The first driving portion is provided at a first end of the first arm. A second end of the first arm is pivotally connected to a first end of the second arm. A hand-held portion is provided at a second end of the second arm.

[0010] In some embodiments, a receiving cavity is provided on a first side of the cover body. A first fixing portion is provided in the receiving cavity. The retraction handle is provided with a second fixing portion. When the second fixing portion is detachably fixed to the first fixing portion, at least a part of the retraction handle is located in the receiving cavity.

[0011] In some embodiments, the first fixing portion includes at least one clamping arm. At least one mounting groove is provided on a side wall of the second fixing portion. At least a part of the clamping arm is located in the mounting groove.

[0012] The first aspect of the present application provides an emergency retraction device, including a driving assembly, a transmission member, and the emergency retraction operation assembly described in the first aspect.

[0013] The third aspect of the present application further provides a surgical stapler, including the emergency retraction operation assembly described in the first aspect or the emergency retraction device described in the second aspect.

[0014] The emergency retraction operation assembly, the emergency retraction device, and the surgical stapler provided by the present application have the following advantages:

[0015] By adopting the present application, when the retraction handle is not needed, the retraction handle is stored in the cover body, and the cover body is mounted on the housing. There is no need to provide additional retraction handle storage, positioning, and mounting components on the housing and the frame. The invasiveness to the housing and the frame is small, and the structure is simple. When in use, the cover body is removed from the housing, and the retraction handle is removed from the cover body to connect a part of the retraction handle to the driving assembly, which is very convenient to use, improves the doctor's use experience, and ensures the normal realization of the emergency retraction function, and improves the reliability in the use of the stapler. Description of the Drawings

[0016] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments read in conjunction with the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the stapler body and the connecting rod in Embodiment 1 of the present application;

[0018] Figure 2 It is to Figure 1 show the internal structure of the housing after the housing in is made transparent;

[0019] Figure 3 It is a schematic diagram of the housing, the transmission member, and the driving assembly in Embodiment 1 of the present application;

[0020] Figure 4 It is a schematic diagram of the emergency retraction operation assembly in Embodiment 1 of the present application;

[0021] Figures 5 to 7 It is a schematic diagram of the cover body and the retraction handle in Embodiment 1 of the present application;

[0022] Figure 8 It is an exploded view of the retraction handle in Embodiment 1 of the present application;

[0023] Figure 9 It is a schematic diagram of the structure of the retraction handle when it is unfolded in Embodiment 1 of the present application;

[0024] Figure 10 It is a schematic diagram of the retraction handle aligned with the mating shaft in Embodiment 1 of the present application;

[0025] Figure 11 It is a schematic diagram of the retraction handle cooperating with the mating shaft in Embodiment 1 of the present application;

[0026] Figure 12 It is a schematic diagram of the retraction handle cooperating with the mating shaft in Embodiment 2 of the present application.

[0027] Reference numerals:

[0028] 100 stapler body 3151 second step portion

[0029] 110 housing 320 retraction handle (Embodiment 1)

[0030] 111 window 321 first arm

[0031] 120 transmission member 3211 protrusion

[0032] 121 rack surface 3212 first driving portion

[0033] 130 driving assembly 3213 first mounting groove

[0034] 131 Motor 3214 Second mounting groove

[0035] 132 Gear set 3215 First pivoting part

[0036] 133 Fitting 3216 Fitting groove

[0037] 1331 Second driving part 322 Second arm

[0038] 200 Connecting rod 3221 Second pivoting part

[0039] 300 Emergency retraction operation assembly 3222 Hand-held part

[0040] 310 Cover 3223 Anti-slip structure

[0041] 311 Accommodating cavity 330 Retraction handle (Embodiment 2)

[0042] 312 First mounting part 331 Protrusion

[0043] 313 Second mounting part 332 First driving part

[0044] 314 First clamping arm 333 First mounting groove

[0045] 3141 First step part 334 Second mounting groove

[0046] 315 Second clamping arm 335 Hand-held part Detailed implementation manners

[0047] Example embodiments will now be described more fully. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be thorough and complete and will fully convey the concept of the example embodiments to those skilled in the art. The "or" or "or" in the specification may mean "and" or "or". Although terms such as "upper", "lower", "between" etc. may be used in this specification to describe different exemplary features and elements of this application, these terms are used herein only for convenience, for example, according to the directions of the examples described in the drawings. Nothing in this specification should be construed as requiring a specific three-dimensional direction of the structure to fall within the scope of this application. Although terms such as "first" or "second" etc. are used in this specification to represent certain features, they are only for representational purposes and are not limitations on the quantity and importance of the specific features.

[0048] The present application provides an emergency fallback operation component, an emergency fallback device and a surgical stapler. The surgical stapler includes a housing and an emergency fallback device, and the emergency fallback device includes the emergency fallback operation component, a driving component and a transmission member. At least a part of the driving component and the transmission member is located inside the housing. The driving component includes a mating member. The emergency fallback operation component includes: a cover body detachably mounted on the housing; and a fallback handle including a first driving portion. When the fallback handle is in a connected state with the cover body, the fallback handle is detachably fixed to the first side of the cover body.

[0049] When the stapler is not malfunctioning, the driving component can drive the transmission member to move along the axial direction of the stapler. When the stapler malfunctions, manual emergency fallback can be achieved through this emergency fallback operation component. Specifically, when the cover body is separated from the housing, the fallback handle is in a separated state from the cover body, the first driving portion of the fallback handle is connected to the mating member and the fallback handle is driven to move in a first direction, the driving component is configured to drive the transmission member to move in the proximal direction, so as to achieve the emergency fallback function of the stapler. In this emergency fallback operation component, when the fallback handle is not needed, the fallback handle is received in the cover body, and the cover body is mounted on the housing, without the need to provide additional fallback handle receiving, positioning and mounting components on the housing and the frame, which has little invasiveness to the housing and the frame, has a simple structure, and is very convenient to use. When in use, the cover body is removed from the housing, and the fallback handle is removed from the cover body, which improves the doctor's use experience and ensures the normal realization of the emergency fallback function, and improves the reliability in the use of the stapler.

[0050] In the present application, the malfunction of the stapler means that the normal function of driving the transmission member to fallback cannot be realized. For example, in an electric stapler, when the motor function is abnormal, the transmission member cannot be driven to fallback by the motor. In a manual stapler, when the fallback handle fails or the transmission relationship between the fallback handle and the transmission member is abnormal, the transmission member cannot be pulled back to the proximal direction by the fallback handle. Hereinafter, a surgical stapler being an electric stapler will be taken as an example for illustration, but the present application is not limited thereto, and this emergency fallback operation component can also be applied to a manual driving component.

[0051] The following will introduce in detail the structure of the emergency fallback operation component of each specific embodiment of the present application in conjunction with the accompanying drawings. It can be understood that each specific embodiment does not limit the protection scope of the present application. In the drawings, the same reference numerals represent the same or similar structures, and thus their repeated descriptions will be omitted. 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, and the end farther from the operator, that is, the end closer to the surgical position, is the distal end. The direction along the axis of the stapler is the axial direction, that is, the direction from the distal end to the proximal end of the stapler, or from the proximal end to the distal end of the stapler. For example, in Figure 1 's perspective, for the outer shell 110, its distal end is the left end and its proximal end is the right end. In the present application, for a component, the inner side and the outer side are relative to the center of the component. The side closer to the center of the component is the inner side, and the side farther from the center of the component is the outer side.

[0052] Figures 1 to 11 FIG. shows a partial structure of the surgical stapler according to Embodiment 1 of the present application. As Figure 1 and Figure 2 shown, in Embodiment 1, the surgical stapler includes a stapler body 100, a connecting rod 200, and an actuator (not shown in the figure). The stapler body 100 is connected to the proximal end of the actuator through the connecting rod 200. The actuator includes a cartridge assembly and an anvil arranged opposite to each other. The stapler body 100 includes an outer shell 110 and an emergency fallback device. The emergency fallback device includes the emergency fallback operation component 300, a driving component 130, and a transmission member 120. At least part of the driving component 130 and the transmission member 120 are located inside the outer shell 110. The distal end of the transmission member 120 is connected to a firing component for stapling staples in the actuator to tissue. A rack surface 121 is provided on one surface of the transmission member 120. The driving component 130 includes a motor 131, a gear set 132, and a fitting 133. The gear set 132 includes at least a first gear connected to the output shaft of the motor 131 and a second gear connected to the transmission member 120. The second gear meshes with the first gear and the rack surface 121 respectively. The fitting 133 is a fitting shaft passing through the center of the second gear. The fitting 133 forms a non-rotatable connection with the second gear. One end of the fitting 133 is provided with a second driving portion 1331. As Figure 2 and Figure 3 shown, the outer shell 110 is provided with a window 111. The fitting 133 and the window 111 are arranged opposite to each other in a second direction. In this embodiment, the window 111 is provided on the top of the outer shell 110, and the second direction is the longitudinal direction of the stapler, that is, Figure 2In the up-and-down direction, the fitting 133 is parallel to the longitudinal direction, and the second driving portion 1331 is aligned with the window 111 in the longitudinal direction.

[0053] As Figures 4 to 7 shown, the emergency fallback operation assembly 300 includes a cover 310 and a fallback handle 320. The cover 310 is detachably mounted at the window 111 of the housing 110. In this embodiment, first mounting portions 312 and second mounting portions 313 are respectively provided at two ends of the cover 310. At least a part of the first mounting portion 312 and / or the second mounting portion 313 has elasticity. The first mounting portion 312 and the second mounting portion 313 are detachably mounted on the inner walls at two ends of the window 111, so that the cover 310 is detachably mounted on the top of the housing 110. In this embodiment, the first mounting portion 312 and the second mounting portion 313 are provided at two axial ends of the cover 310, and at least a part of the first mounting portion 312 has elasticity. When mounting the cover 310 on the housing 110, first insert the second mounting portion 313 into the proximal end of the window 111, and then insert the first mounting portion into the distal end of the window 111. When the first mounting portion 312 is inserted, it is first stressed and slightly deformed, and then expands outwards to bear the distal end of the window 111, so as to fix the cover 310 on the housing 110. In other embodiments, the first mounting portion and the second mounting portion may also be provided on the left and right sides of the cover 310, or only the second mounting portion has elasticity, or both the first mounting portion and the second mounting portion have elasticity, or both the first mounting portion and the second mounting portion have no elasticity, and the cover 310 and the window 111 are in an interference fit. The fallback handle 320 and the cover 310 have a connected state and a separated state. As Figure 4 shown, when the fallback handle 320 and the cover 310 are in the connected state, the fallback handle 320 is detachably fixed to the first side of the cover 310. The first side of the cover 310 is the side of the cover 310 facing the inner cavity of the housing 110. At this time, when the cover 310 is mounted on the housing 110, the fallback handle 320 is received in the cavity surrounded by the housing 110 and the cover 310. As Figures 5 to 7 shown, when the fallback handle 320 and the cover 310 are in the separated state, the fallback handle 320 is separated from the cover 310 and becomes an independent part.

[0054] As Figures 7 to 9As shown, the retraction handle 320 includes a first arm 321 and a second arm 322. A first driving portion 3212 is provided at a first end of the first arm 321, a first pivoting portion 3215 is provided at a second end of the first arm 321, a second pivoting portion 3221 is provided at a first end of the second arm 322, and the first pivoting portion 3215 is pivotally connected to the second pivoting portion 3221, so that the first arm 321 and the second arm 322 can rotate relative to each other. A hand-held portion 3222 is provided at a second end of the second arm 322. The first driving portion 3212 is connected to a second driving portion 1331 of the mating member 133. When the mating member 133 is driven to move in a first direction, the transmission member 120 is driven by the second gear to move in the proximal direction. In this embodiment, the first driving portion 3212 is configured to drive the mating member 133 to rotate, and the first direction is a rotational direction around the axis of the mating member 133. Specifically, in Figure 3 's perspective, the first direction is the clockwise direction. Therefore, when the first driving portion 3212 is connected to the second driving portion 1331, a non-rotatable relative connection is formed, so that the first driving portion 3212 can drive the second driving portion 1331 to rotate. For example, the first driving portion 3212 is a hole with an internal thread, the second driving portion 1331 is a screw rod portion, and the first driving portion 3212 and the second driving portion 1331 are connected by a thread. Alternatively, the first driving portion 3212 is a hole with a longitudinally extending groove on its inner surface, and a longitudinally extending post is provided on the surface of the second driving portion 1331. When the second driving portion 1331 is inserted into the first driving portion 3212, the longitudinally extending post is inserted into the longitudinally extending groove, so that the first driving portion 3212 can drive the second driving portion 1331 to rotate when it rotates. Other alternative embodiments can be adopted as long as the first driving portion 3212 and the second driving portion 1331 form a non-rotatable relative connection and the first driving portion 3212 and the second driving portion 1331 can be separated, and all belong to the protection scope of the present application.

[0055] The retraction handle 320 has Figure 7 the storage state shown in Figure 9 and the unfolded state shown in Figure 8) When the retraction handle 320 is in the retracted state, at least a part of the second arm 322 is received in the mating groove 3216 of the first arm 321. By rotating the second arm 322 relative to the first arm 321 to open it outward, the retraction handle 320 can be changed from the retracted state to the deployed state. After the retraction handle 320 is deployed, the operating lever arm of the retraction handle 320 is lengthened, which is more convenient for the doctor to drive the rotation of the retraction handle 320. The surface of the hand-held portion 3222 may be optionally provided with an anti-slip structure 3223, such as a plurality of convex points distributed evenly or unevenly, or may be a plurality of anti-slip lines or other concave-convex structures, which is more convenient for the doctor to hold and operate.

[0056] As Figures 4 to 6 shown, a receiving cavity 311 is provided on the first side of the cover 310. A first fixing portion is provided in the receiving cavity 311. The retraction handle 320 is provided with a second fixing portion. When the retraction handle 320 is in a connected state with the cover 310, at least a part of the retraction handle 320 is located in the receiving cavity 311, and the second fixing portion is detachably fixed to the first fixing portion. In this embodiment, the first fixing portion includes at least one clamping arm provided on the first arm 321. At least one mounting groove is provided on the side wall of the second fixing portion. At least a part of the clamping arm is located in the mounting groove. Here, it is exemplarily shown that the cover 310 is provided with two first clamping arms 314 and one second clamping arm 315. The first arm 321 is provided with two first mounting grooves 3213 and one second mounting groove 3214. The two first clamping arms 314 may be optionally such that at least a part of them has elasticity and can clamp the retraction handle 320. The second clamping arm 315 assists in positioning the retraction handle 320 to maintain the installation stability of the retraction handle 320 and the cover 310. As Figures 4 to 7As shown, the first clamping arm 314 is provided with a first step portion 3141, and the second clamping arm 315 is provided with a second step portion 3151. When the retraction handle 320 is in a connected state with the cover body 310, the second arm 322 is received on the side of the first arm 321 facing the cover body 310, and the first step portion 3141 and the second step portion 3151 are engaged at the junction of the second arm 322 and the first arm 321, improving the structural stability of the fixation of the cover body 310 and the retraction handle 320, and effectively preventing the retraction handle 320 from having relative movement in the lateral direction with respect to the cover body 310. The connection manner of the cover body 310 and the retraction handle 320 here is only an example and does not limit the protection scope of this application. In other alternative embodiments, the cover body 310 and the retraction handle 320 can be connected in other ways. For example, the cover body 310 is only provided with the first clamping arm without the second clamping arm, and correspondingly, the retraction handle 320 is only provided with the first mounting groove without the second mounting groove. Or, a boss is provided on the first side of the cover body 310, and at least one mounting groove is provided in the boss, while at least one mounting post is provided on the side of the retraction handle 320 facing the cover body 310, and the mounting post is detachably mounted in the mounting groove. Other alternative embodiments all fall within the protection scope of this application.

[0057] As Figure 9 and Figure 10 shown, the first end of the first arm 321 of the retraction handle 320 includes a protruding portion 3211, and a first driving portion 3212 is provided on one side of the protruding portion 3211. The protruding portion 3211 is configured to be able to at least partially pass through the window of the outer shell and enter the inner cavity of the outer shell, and the length of the protruding portion 3211 is sufficient so that the protruding portion 3211 can be connected to the second driving portion 1331 of the mating member 133. When operating the retraction handle 320 to drive the mating member 133 to rotate, the protruding portion 3211 of the retraction handle 320 at least partially enters the interior of the outer shell, and the other part remains above the outer shell, facilitating the doctor to hold and operate outside the outer shell.

[0058] The following combines Figure 10 and Figure 11Specifically introduce the implementation principle of the emergency fallback function of this embodiment. When the stapler is not malfunctioning, the driving component 130 can drive the transmission member 120 to move along the axial direction of the stapler. Specifically, when the motor 131 is controlled to rotate forward, the motor 131 drives the transmission member 120 to move in the distal direction through the gear set 132 to achieve the firing of the stapler. When the motor 131 is controlled to rotate in reverse, the motor 131 drives the transmission member 120 to move in the proximal direction through the gear set 132 to achieve the fallback of the transmission member 120. When the stapler malfunctions and it is impossible to drive the transmission member 120 to fallback through the motor 131, it is necessary to use this emergency fallback operation component 300 to achieve manual fallback. The process of manual fallback mainly includes: First, at least partially separate the gear set 132 from the motor 131, such as separating the first gear from the output shaft of the motor 131, or separating the first gear from the second gear, so that the motor 131 does not block the rotation of the second gear; then remove the cover 310 containing the fallback handle 320 from the housing, remove the fallback handle 320 from the cover 310, expand the second arm 322 of the fallback handle 320 outward relative to the first arm 321, hold the hand-held part 3222 of the second arm 322, and align the first driving part 3212 of the first arm 321 with the second driving part 1331 of the mating part 133 longitudinally ( Figure 10 ); then make the first driving part 3212 pass through the window of the housing and enter the inner cavity of the housing, so that the first driving part 3212 and the second driving part 1331 form a non-rotatable relative connection ( Figure 11 ), operate the second arm 322 to make the fallback handle 320 rotate around the axis of the mating part 133, drive the second gear to rotate through the mating part 133, and then the second gear drives the transmission member 120 to move in the proximal direction to achieve the emergency fallback function. After completing the emergency fallback, the second arm 322 of the fallback handle 320 can be retracted to one side of the first arm 321 again, the fallback handle 320 can be stored on the first side of the cover 310, and then the cover 310 can be connected to the window of the housing again. Therefore, in this emergency fallback operation component 300, when the fallback handle 320 is not needed, the fallback handle 320 is stored in the cover 310, and the cover 310 is installed on the housing. There is no need to set additional components for storing, positioning, and installing the fallback handle 320 on the housing and the frame. The invasiveness to the housing and the frame is small, the structure is simple, and when in use, just remove the cover 310 from the housing, remove the fallback handle 320 from the cover 310, and connect the first driving part 3212 of the fallback handle 320 to the mating part 133 in the driving component, which is very convenient to use, improves the doctor's use experience, and ensures the normal realization of the emergency fallback function, improving the reliability during the use of the stapler.

[0059] Figure 12It is a schematic diagram of the cooperation between the retraction handle, a part of the drive assembly and the transmission member in Embodiment 2 of the present application. The difference between this embodiment and Embodiment 1 is that the retraction handle 330 only includes one arm. A protrusion 331 is provided at the first end of the arm, and a first drive portion 332 is provided at the bottom of the protrusion 331. The first drive portion 332 is a hole that cooperates with the second drive portion of the mating member 133, and the first drive portion 332 can form a non-rotatable connection with the second drive portion. A hand-held portion 335 is provided at the second end of the arm. At least one mounting groove is provided on the retraction handle 330 (here, the first mounting groove 333 and the second mounting groove 334 are taken as examples for illustration), and a detachable connection is formed with the first clamping arm and the second clamping arm of the cover body. The structures of the drive assembly, the transmission member 120 and the cover body in Embodiment 2 are the same as those in Embodiment 1, and the implementation manner of the emergency retraction function is also the same as that in Embodiment 1, which will not be elaborated here.

[0060] The above content is a further detailed description of the present application in combination with specific preferred implementation manners. It cannot be determined that the specific implementation of the present application is only limited to these descriptions. For those of ordinary skill in the technical field to which the present application belongs, without departing from the concept of the present application, several simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the present application.

Claims

1. An emergency fallback operating component, characterized in that: For a surgical stapler, the surgical stapler comprises a housing, a drive assembly and a transmission member, the drive assembly and the transmission member are at least partially located inside the housing, and the drive assembly comprises a mating member; The emergency fallback operation component includes: A cover body, detachably mounted on the housing; A retraction handle comprises a first driving portion, wherein the retraction handle is detachably fixed to a first side of the cover body; Wherein, when the first driving portion of the retracting handle is connected to the matching member and the retracting handle is driven to move along the first direction, the driving assembly is configured to drive the transmission member to move in the proximal direction.

2. The emergency rollback operating assembly according to claim 1, characterized in that: The shell is provided with a window, the cover is detachably mounted on the window, and the first side of the cover is a side of the cover facing the inner cavity of the shell.

3. The emergency rollback operating assembly according to claim 2, characterized in that: The second direction is the longitudinal direction of the stapler, the window is opened at the top of the shell, and the window and the matching piece are arranged opposite to each other in the second direction.

4. The emergency rollback operating assembly according to claim 2, characterized in that: The first mounting portion and the second mounting portion are respectively disposed at two ends of the cover body, at least a portion of the first mounting portion and / or the second mounting portion is elastic, and the first mounting portion and the second mounting portion are detachably mounted on the inner walls at both ends of the window.

5. The emergency rollback operating assembly according to claim 4, characterized in that: The retraction handle comprises a protrusion, one side of which is provided with the first driving portion, and the protrusion is configured to at least partially pass through the window to enter the inner cavity of the housing.

6. The emergency rollback operating assembly according to claim 1, characterized in that: The retraction handle includes a first arm and a second arm, the first end of the first arm is provided with the first driving portion, the second end of the first arm is pivotally connected to the first end of the second arm, and the second end of the second arm is provided with a hand-holding portion.

7. The emergency rollback operating assembly according to claim 1, characterized in that: A accommodating cavity is provided on the first side of the cover body, a first fixing portion is provided in the accommodating cavity, and a second fixing portion is provided on the retraction handle. When the second fixing portion is detachably fixed to the first fixing portion, the retraction handle is at least partially located in the accommodating cavity.

8. The emergency rollback operating assembly according to claim 7, characterized in that: The first fixing portion includes at least one clamping arm, and the side wall of the second fixing portion is provided with at least one mounting groove, and the clamping arm is at least partially located in the mounting groove.

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

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

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