Triggering assembly, percussion device and electric anastomat

Abstract

The utility model provides a triggering assembly, a percussion device and an electric anastomat, the triggering assembly comprises a switch assembly, the switch assembly comprises a first contact and a second contact, the switch assembly is configured to start an actuating piece of the electric anastomat to move towards the far end when the first contact is triggered, and the second contact is configured to start the actuating piece of the electric anastomat to move towards the far end when the second contact is triggered; when the second contact is triggered, the actuating piece is started to move towards the near end; the trigger part is arranged on the side, facing the switch assembly, of the handle part, and the trigger part is configured to trigger the first contact when being driven by the handle part to move in the first axial direction of the anastomat and to trigger the second contact when being driven by the handle part to move in the second axial direction of the anastomat to trigger the second contact when being driven by the handle part to move in the second axial direction of the anastomat. And the second contact is triggered. According to the invention, maloperation of doctors can be reduced, and the safety and reliability of instrument use can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a trigger assembly, a firing device and an electric stapler. Background Art

[0002] An electric stapler is a surgical instrument used for tissue stapling and resection, typically achieving tissue clamping and cutting through a precise mechanical structure. It is widely used in surgical procedures. An electric stapler generally comprises an instrument platform and a stapler assembly connected to the distal end of the instrument platform. The instrument platform houses a firing mechanism, which includes an actuator rod, a motor, and a start button. The start button includes a first button for driving the motor forward and a second button for driving the motor reverse. The motor is used to drive the actuator rod distally to close and fire the stapler assembly when forward rotation is initiated, and to retract the actuator rod proximally to open the jaws of the stapler assembly when reverse rotation is initiated. During surgery, the firing mechanism first drives the jaws of the stapler assembly closed to clamp tissue, and then the actuator rod continues to drive the stapler assembly to perform the cutting and suturing actions. After the stapler is fired, the actuator rod retracts to open the jaws of the stapler assembly.

[0003] In actual applications, surgical scenarios are complex and changeable. During the operation, doctors often have to repeatedly adjust the position of the electric stapler. However, the existing technology uses a start button to control the start of the motor, which can easily cause doctors to make mistakes and affect the normal progress of the operation. Utility Model Content

[0004] In response to the problems in the prior art, the purpose of this application is to provide a trigger assembly, a firing device and an electric stapler, which are conducive to reducing doctors' misoperations and improving the safety and reliability of the instrument use.

[0005] In a first aspect, the present application provides a trigger assembly for an electric stapler, the trigger assembly comprising:

[0006] a switch assembly comprising a first contact and a second contact, wherein the switch assembly is configured to activate the actuator of the electric stapler to move in a distal direction when the first contact is triggered, and to activate the actuator to move in a proximal direction when the second contact is triggered;

[0007] A handle component and a trigger component, wherein the trigger component is arranged on a side of the handle component facing the switch assembly, and the trigger component is configured to trigger the first contact when it is driven by the handle component to move along a first axial direction of the stapler, and to trigger the second contact when it is driven by the handle component to move along a second axial direction of the stapler.

[0008] In some embodiments, the switch assembly includes a first trigger switch and a second trigger switch arranged along the axial direction, the first trigger switch is provided with the first contact on a side facing the trigger member, and the second trigger switch is provided with the second contact on a side facing the trigger member.

[0009] In some embodiments, the trigger member includes a trigger member body, a first trigger portion and a second trigger portion, wherein the first trigger portion and the second trigger portion are arranged along the axial direction and are disposed on a side of the trigger member body facing the switch assembly.

[0010] In some embodiments, a side surface of the first trigger portion opposite to the first contact is an inclined first guide surface, and a side surface of the second trigger portion opposite to the second contact is an inclined second guide surface.

[0011] In some embodiments, the handle component includes a handle body, which is rotatably connected to the shell of the anastomosis device. When the handle body rotates along a first rotational direction, the handle body drives the trigger member to move along the first axial direction. When the handle body rotates along a second rotational direction, the handle body drives the trigger member to move along the second axial direction. The second axial direction is in the opposite direction to the first axial direction.

[0012] In some embodiments, the handle body includes a first driving portion, the trigger member includes a second driving portion, and the first driving portion is rotatably connected to the second driving portion.

[0013] In some embodiments, the handle component further includes a mating piece connected to a first elastic piece. When the handle body rotates along the first rotation direction, the mating piece is driven to rotate along the first rotation direction, and the mating piece drives the first elastic piece to undergo elastic deformation.

[0014] In some embodiments, a second elastic member is provided between the handle body and the mating member, and the trigger assembly further includes a limiting member. When the handle body rotates along the second rotation direction, the mating member is blocked by the limiting member and does not rotate, and the handle body drives the second elastic member to undergo elastic deformation.

[0015] A second aspect of the present application provides a firing device, comprising an actuator, a motor, and the trigger assembly described in the first aspect, wherein the switch assembly is used to control the driving process of the motor on the actuator.

[0016] A third aspect of the present application provides an electric stapler, comprising the trigger assembly described in the first aspect or the firing device described in the second aspect.

[0017] The trigger assembly, firing device, and electric stapler provided by this application have the following advantages:

[0018] By adopting the trigger assembly of the present application, when the doctor operates the stapler, he drives the trigger member to move in different directions by operating the handle component, so that when the first contact of the switch assembly is triggered, the actuator can be activated to move in the distal direction, thereby completing the closing and firing action of the stapler. When the second contact of the switch assembly is triggered, the actuator can be activated to move in the proximal direction, thereby completing the retraction action of the stapler. The use of the handle component is more in line with the doctor's usage habits, and different operations are not easily confused, which is conducive to reducing the doctor's misoperation, thereby improving the safety and reliability of the instrument use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present application will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings.

[0020] Figure 1 1 is a schematic diagram of a partial structure of an instrument platform of an anastomosis device according to an embodiment of the present application;

[0021] Figure 2 This is a first side view of a firing device according to an embodiment of the present application;

[0022] Figure 3 is a second side view of a firing device according to an embodiment of the present application;

[0023] Figure 4 This is a structural diagram of the trigger assembly when the handle body is in the initial position according to one embodiment of the present application;

[0024] Figure 5 This is a schematic structural diagram of a trigger member according to an embodiment of the present application;

[0025] Figure 6 This is a schematic diagram of the cooperation between the handle component and the torsion spring according to one embodiment of the present application;

[0026] Figure 7 This is a schematic diagram of the cooperation between a partial structure of a handle body and a matching piece according to an embodiment of the present application;

[0027] Figure 8 This is a schematic structural diagram of a handle component according to an embodiment of the present application;

[0028] Figure 9 This is a structural diagram of the trigger assembly when the handle body is in the first position according to an embodiment of the present application;

[0029] Figure 10 This is a structural schematic diagram of the trigger assembly when the handle body is in the second position according to an embodiment of the present application.

[0030] Reference numerals:

[0031] 1 Handle component 30 Trigger body

[0032] 11 Handle body 31 First trigger part

[0033] 111 grip portion 311 first guide surface

[0034] 112 pivoting portion 32 second triggering portion

[0035] 113 First driving portion 321 Second guide surface

[0036] 114 First linkage part 33 Second driving part

[0037] 12 Matching parts 4 Limiting parts

[0038] 121 Second linkage part 51 Return spring

[0039] 122 Spring fixing portion 52 Torsion spring

[0040] 123 matching slot 61 motor

[0041] 13 Shaft 62 Gear Set

[0042] 21 First trigger switch 63 Actuating member

[0043] 211 First contact 7 Circuit board

[0044] 22 Second trigger switch 8 rack

[0045] 221 Second contact 9 Trigger safety piece

[0046] 3 trigger DETAILED DESCRIPTION

[0047] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of 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 comprehensive and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated descriptions will be omitted. "Or" and "or" in the specification may both mean "and" or "or". Although the terms "above", "below", "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 orientation of the structure to fall within the scope of this 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 intended to limit the number and importance of specific features.

[0048] The present application provides a trigger assembly, a firing device and an electric stapler. Figure 1 FIG. 1 is a partial structural diagram of the instrument platform of the anastomosis device according to an embodiment of the present application. Figure 1 As shown, the electric stapler includes an instrument platform and a staple cartridge assembly mounted on the distal end of the instrument platform. The instrument platform includes a housing, a frame 8 and the firing device. Figure 2 and Figure 3 Schematic diagram of the structure of the firing device of this embodiment. Figures 1 to 3 As shown, the firing mechanism includes an actuator 63, a motor 61, a circuit board 7, and the trigger assembly. The actuator 63 extends along the axial direction of the stapler and has a toothed surface on one side. The output shaft of the motor 61 is connected to the toothed surface of the actuator 63 via a gear set 62, so that rotation of the output shaft of the motor 61 drives the actuator 63 to move along the axial direction. The circuit board 7 is provided with a controller for controlling the start and stop of the motor 61 and the direction of rotation.

[0049] In this 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 site 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. Figure 1 and Figure 2 In the perspective of , the direction from right to left is the direction toward the far end, and the direction from left to right is the direction toward the near end. Figure 3 In the perspective of , the direction from left to right is the direction toward the far end. Figures 1 to 3 The up and down direction in is the longitudinal direction, that is, the width direction. Figures 1 to 3The direction perpendicular to the paper surface is the transverse direction, that is, the width direction, which is perpendicular to the axial direction and the longitudinal direction.

[0050] like Figures 1 to 4 As shown, in this embodiment, the trigger assembly includes a switch assembly, a handle component 1, and a trigger member 3. The switch assembly includes a first trigger switch 21 and a second trigger switch 22 arranged axially. A first contact 211 is located below the first trigger switch 21, and a second contact 221 is located below the second trigger switch 22. The first and second trigger switches 21 and 22 are mounted on a circuit board 7 and connected to a controller via circuitry on the circuit board 7. The first trigger switch 21 is configured to activate distal movement of the actuator 63 of the electric stapler when the first contact 211 is triggered. The second trigger switch 22 is configured to activate proximal movement of the actuator 63 of the electric stapler when the second contact 221 is triggered. The handle component 1 includes a handle body 11, which includes a pivot portion 112, a grip portion 111, and a first drive portion 113. The pivot portion 112 is rotatably connected to the stapler housing via a rotating shaft 13. The grip portion 111 is designed for hand-held operation by a physician. The trigger member 3 is provided on a side of the handle member 1 facing the switch assembly. The trigger member 3 is configured to trigger the first contact 211 when driven by the handle member 1 to move along a first axial direction of the stapler, and to trigger the second contact 221 when driven by the handle member 1 to move along a second axial direction of the stapler. The first axial direction and the second axial direction are opposite directions, the first axial direction is toward the distal end, and the second axial direction is toward the proximal end.

[0051] like Figure 4 and Figure 5 As shown, in this embodiment, the trigger member 3 includes a trigger member body 30, a second driving portion 33, a first trigger portion 31 and a second trigger portion 32. The first trigger portion 31 and the second trigger portion 32 are arranged along the axial direction and are provided on the side of the trigger member body 30 facing the switch assembly. The second driving portion 33 is provided on the side of the trigger member body 30 facing the handle body 11. The first driving portion 113 and the second driving portion 33 are rotatably connected. In this embodiment, as Figure 5 and Figure 6As shown, the first driving part 113 is provided with a groove with an arc-shaped bottom surface, and the bottom of the second driving part 33 is cylindrical, and the cylindrical shape is embedded in the groove so that the second driving part 33 can rotate smoothly relative to the first driving part 113. An axial guide structure can be provided between the trigger body 30 and the housing or frame 8 of the stapler. For example, a convex portion is provided on the side of the trigger body 30, and a guide groove extending in the axial direction is provided on the housing or frame 8 of the stapler, or a guide groove extending in the axial direction is provided on the side of the trigger body 30, and a convex portion is provided on the housing or frame 8 of the stapler. The convex portion is embedded in the guide groove and can move along the extension direction of the guide groove.

[0052] like Figure 4 and Figure 5 As shown, in this embodiment, the first trigger portion 31 is located on the proximal side of the first contact 211, and the side of the first trigger portion 31 opposite to the first contact 211 (the distal surface of the first trigger portion 31) is an inclined first guide surface 311, so that the first trigger portion 31 moves more smoothly when triggering the first contact 211. The second trigger portion 32 is located on the distal side of the second contact 221, and the side of the second trigger portion 32 opposite to the second contact 221 (the proximal surface of the second trigger portion 32) is an inclined second guide surface 321, so that the second trigger portion 32 moves more smoothly when triggering the second contact 221. The present application fully utilizes the space inside the instrument platform through the reasonable design and arrangement of the structure and position of each component of the trigger assembly, which is conducive to the miniaturization of the electric stapler.

[0053] In this embodiment, the handle component 1 includes a handle body 11 , and the handle body 11 is rotatably connected to the housing of the stapler. Figure 4 The doctor presses the handle body 11 so that the handle body 11 rotates from the initial position along the first rotation direction ( Figure 4 When the handle body 11 rotates in the second rotation direction (in the counterclockwise direction), the handle body 11 drives the trigger member 3 to move along the first axial direction (towards the distal end), and the first trigger portion 31 triggers the first trigger switch 21. The first trigger switch 21 starts the actuator 63 to move in the distal direction to achieve the closing and firing of the stapler. The doctor lifts the handle body 11 so that the handle body 11 moves from the initial position to the second rotation direction ( Figure 4 When the handle body 11 rotates in the clockwise direction, the trigger member 3 moves along the second axial direction (toward the proximal direction), and the second trigger portion 32 triggers the second trigger switch 22, and the second trigger switch 22 starts the actuator 63 to move in the proximal direction to achieve the retraction of the anastomosis device.

[0054] Therefore, by adopting the trigger assembly of the present application, when the doctor operates the stapler, he can drive the trigger part 3 to move in different directions by operating the handle part 1, which can trigger the stapler to perform closing, firing and retraction actions. The use of the handle part 1 is more in line with the doctor's usage habits, and different operations are not easy to be confused. Regardless of whether the doctor holds the handle part 1 with his forehand or backhand, it is not easy to make mistakes in the operation method of the handle part 1, which is conducive to reducing the doctor's misoperation, thereby improving the safety and reliability of the use of the instrument.

[0055] like Figure 2 、 Figures 6-8 As shown, the handle body 11 also includes a first linkage portion 114. The handle component 1 also includes a fitting 12, and the fitting 12 includes a second linkage portion 121 and a spring fixing portion 122. The spring fixing portion 122 is connected to one end of the first elastic member, and the other end of the first elastic member is connected to the housing of the anastomosis device. The first elastic member can be optionally a return spring 51, which provides an elastic force to the fitting 12 to make it move along the second rotation direction. Figure 3 、 Figure 7 and Figure 8As shown, a second elastic member is further provided between the handle body 11 and the mating member 12. In this embodiment, the second elastic member may be optionally a torsion spring 52, with two legs respectively abutting against the handle body 11 and the mating member 12, applying elastic forces to the handle body 11 and the mating member 12 to keep them in the initial mating state. The trigger assembly also includes a limit member 4, which is, for example, a limit pin or a limit protrusion fixed to the housing of the anastomosis device. An arc-shaped mating groove 123 is provided on one side of the mating member 12, and the limit member 4 is at least partially embedded in the mating groove 123. When the handle body 11 is in the initial position, the limit member 4 is located at the top of the mating groove 123. When the doctor rotates the handle body 11 in the first rotational direction, the first linkage portion 114 and the second linkage portion 121 drive the mating member 12 to rotate in the first rotational direction. The mating member 12 elastically deforms the return spring 51, causing the mating slot 123 to move relative to the stopper 4, positioning the stopper 4 below the mating slot 123. The engagement between the mating slot 123 and the stopper 4 also guides the rotational movement of the mating member 12. When the doctor releases the handle body 11, the handle body 11 and the mating member 12 return to their initial positions under the elastic deformation restoring force of the return spring 51. When the doctor rotates the handle body 11 in the second rotational direction, the mating member 12 is blocked by the stopper 4 and prevents rotation. The handle body 11 elastically deforms the second elastic member. When the doctor releases the handle body 11, the handle body 11 returns to its initial position relative to the mating member 12 in the first rotational direction under the elastic deformation restoring force of the torsion spring 52.

[0056] The following combination Figure 2 、 Figure 4 、 Figure 9 and Figure 10 The working mode of the firing device is described in detail.

[0057] like Figure 2 and Figure 4 As shown, in the initial state, the handle body 11, the fitting 12 and the trigger 3 are all in the initial position. The first driving part 113 does not act on the trigger 3, and the trigger 3 does not act on the first trigger switch 21 and the second trigger switch 22. At this time, the motor 61 is not turned on, and the actuating rod is in the initial position at the proximal end. Figure 9As shown, when the doctor presses the handle body 11, causing it to rotate in the first rotational direction, the first linkage 114 drives the second linkage 121, causing the mating member 12 to also rotate in the first rotational direction. This causes the return spring 51 to elastically deform. The first drive unit 113, via the second drive unit 33, drives the trigger member 3 toward the distal end. The first trigger member 31 contacts the first contact 211, and the first trigger switch 21 sends a first trigger signal to the controller. The controller sends a first start signal to the motor, which starts forward rotation and drives the actuator toward the distal end via the gear train, closing the stapler. After the stapler is closed, the doctor presses the firing safety to release the stapler's firing safety. The doctor then presses the handle body 11 again, triggering the first trigger switch 21 again. The controller controls the motor to rotate forward, driving the actuator to continue moving toward the distal end, firing the stapler. When the doctor releases the handle body 11, the handle body 11 and mating member 12 return to their initial positions under the action of the return spring 51.

[0058] like Figure 10 As shown, after the stapler is fired, the physician lifts the handle body 11 upward, causing it to rotate in the second rotational direction, while the mating member 12 remains in its initial position and does not move. The first drive unit 113 drives the trigger member 3 in a reverse direction toward the proximal end. The second trigger unit 32 triggers the second trigger switch 22, causing the controller to reverse the motor rotation, driving the actuator proximally via the gear train, thereby firing the stapler. When the physician releases the handle body 11, the torsion spring 52 allows the handle body 11 to return to its initial position.

[0059] The above content is a further detailed description of the present application in conjunction with specific preferred embodiments, and the specific implementation of the present application cannot be considered to be 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, and all of them should be considered to fall within the scope of protection of the present application.

Claims

1. A trigger component, characterized in that: For an electric stapler, the trigger assembly comprises: a switch assembly comprising a first contact and a second contact, wherein the switch assembly is configured to activate the actuator of the electric stapler to move in a distal direction when the first contact is triggered, and to activate the actuator to move in a proximal direction when the second contact is triggered; A handle component and a trigger component, wherein the trigger component is arranged on a side of the handle component facing the switch assembly, and the trigger component is configured to trigger the first contact when it is driven by the handle component to move along a first axial direction of the stapler, and to trigger the second contact when it is driven by the handle component to move along a second axial direction of the stapler.

2. The trigger assembly according to claim 1, characterized in that The switch assembly includes a first trigger switch and a second trigger switch arranged along the axial direction. The first trigger switch is provided with the first contact on a side facing the trigger member, and the second trigger switch is provided with the second contact on a side facing the trigger member.

3. The trigger assembly according to claim 1, characterized in that The trigger member includes a trigger member body, a first trigger portion and a second trigger portion. The first trigger portion and the second trigger portion are arranged along the axial direction and are provided on a side of the trigger member body facing the switch assembly.

4. The trigger assembly according to claim 3, characterized in that: The side surface of the first trigger portion opposite to the first contact is an inclined first guide surface, and the side surface of the second trigger portion opposite to the second contact is an inclined second guide surface.

5. The trigger assembly according to claim 1, characterized in that: The handle component includes a handle body, which is rotatably connected to the shell of the anastomosis device. When the handle body rotates along a first rotational direction, the handle body drives the trigger member to move along the first axial direction. When the handle body rotates along a second rotational direction, the handle body drives the trigger member to move along the second axial direction. The second axial direction is opposite to the first axial direction.

6. The trigger assembly according to claim 5, characterized in that: The handle body includes a first driving part, the trigger member includes a second driving part, and the first driving part is rotatably connected to the second driving part.

7. The trigger assembly according to claim 5, characterized in that: The handle component further includes a matching piece connected to the first elastic piece. When the handle body rotates along the first rotation direction, the matching piece is driven to rotate along the first rotation direction, and the matching piece drives the first elastic piece to elastically deform.

8. The trigger assembly according to claim 7, characterized in that: A second elastic member is further provided between the handle body and the mating member, and the trigger assembly further includes a limiting member. When the handle body rotates along the second rotation direction, the mating member is blocked by the limiting member and does not rotate, and the handle body drives the second elastic member to undergo elastic deformation.

9. A firing device, characterized in that: The invention comprises an actuating member, a motor and the trigger assembly according to any one of claims 1 to 8, wherein the switch assembly is used to control the driving process of the motor on the actuating member.

10. An electric stapler, characterized in that: Comprising the trigger assembly according to any one of claims 1 to 8 or the firing device according to claim 9.

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