Head oscillating device and electric stapler

Abstract

The present application provides a head oscillating device and an electric stapler. The electric stapler comprises an instrument platform and a staple head connected to the distal end of the instrument platform. The head oscillating device comprises: a power mechanism comprising a motor and an output shaft, wherein the motor is configured to drive the output shaft to move in the axial direction of the stapler; and a transmission mechanism with a proximal end connected to the output shaft and a distal end connected to the staple head. The transmission mechanism is configured to be driven by the output shaft to move in the axial direction of the stapler, thereby driving the staple head to oscillate in the transverse direction of the stapler relative to the instrument platform. The present application achieves the electric and automatic oscillation of the electric stapler. An operator can adjust the staple head to a desired orientation with one hand, thus improving the user experience of the stapler.

Description

Swing head device and electric stapler Technical Field

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

[0002] The electrification of surgical staplers is a future development trend, which can reduce the pulling of the stapler on the tissue during operation, reduce the firing vibration, and improve the quality of tissue anastomosis. The electric stapler includes an instrument platform and a nail head connected to the distal end of the instrument platform. The instrument platform is provided with a closing and firing assembly that can drive the nail head to close and fire. The nail head can be suturing and cutting the tissue by the driving of the closing and firing assembly. In order to adapt to different surgical scenarios, it is necessary to adjust the swing angle of the nail head relative to the instrument platform, that is, to realize the swing head control of the stapler. However, the existing electric staplers cannot realize the electric swing head of the nail head. The operator needs to hold the instrument platform with one hand and operate the manual swing head with the other hand. One-handed operation cannot be achieved, which affects the operator's experience.

[0003] Summary of the Invention

[0004] In response to the problems in the prior art, the purpose of this application is to provide a head swing device and an electric stapler to achieve electric automatic head swing of the electric stapler and improve the user experience of the stapler.

[0005] The present application provides a head swing device for an electric stapler. The electric stapler includes an instrument platform and a staple head connected to the distal end of the instrument platform. The head swing device includes:

[0006] a power mechanism comprising a motor and an output shaft, wherein the motor is configured to drive the output shaft to move along the axial direction of the stapler;

[0007] The transmission mechanism has a proximal end connected to the output shaft, and a distal end connected to the nail head. The transmission mechanism is configured to be driven by the output shaft to move axially along the stapler, while driving the nail head to swing laterally along the stapler relative to the instrument platform.

[0008] In some embodiments, the motor is a linear motor, the power mechanism further includes a reducer, and the motor is connected to the output shaft through the reducer.

[0009] In some embodiments, the motor is a rotary motor, and the power mechanism further includes a motion conversion assembly. The motor is connected to the output shaft via the motion conversion assembly, and the motion conversion assembly is configured to convert the rotary motion output by the motor into linear motion.

[0010] In some embodiments, the transmission mechanism includes a first transmission member, a connecting member, and a second transmission member, and the output shaft is connected to the proximal end of the nail head through the first transmission member, the connecting member, and the second transmission member in sequence.

[0011] In some embodiments, the connecting member includes a rotating connecting portion and a fixing portion, the distal end of the first transmission member is rotatably connected to the rotating connecting portion, and the proximal end of the second transmission member is non-rotatably connected to the fixing portion.

[0012] In some embodiments, the connecting member is provided with an opening, the rotary connecting portion includes a hole wall surrounding the opening, and the distal end of the first transmission member is slidably connected to the hole wall.

[0013] In some embodiments, the first transmission member includes a first section and a second section, the first section is located proximal to the second section, and the first section and the second section are connected by a bend portion so that the first section is located laterally outside the second section.

[0014] In some embodiments, the first transmission member is a sheet-like rod, and a torsion portion is provided at the distal end of the first transmission member so that the surface direction of the first transmission member at the distal end is twisted from being parallel to the longitudinal direction to being parallel to the transverse direction.

[0015] The present application also provides an electric stapler, comprising the above-mentioned swing head device.

[0016] The swing head device and electric stapler provided by this application have the following advantages:

[0017] By adopting the present application, when the angle of the nail head needs to be adjusted, the power mechanism drives the transmission mechanism to move axially along the stapler, and the transmission mechanism drives the nail head to move laterally along the stapler relative to the instrument platform, thereby realizing the electric automatic head swing of the electric stapler. The operator can adjust the nail head to the required angle with one hand, thereby improving the user experience of the stapler. The operator can adjust the angle of the nail head according to different usage scenarios and surgical needs. The use of the nail head is more flexible, which broadens the range of usage scenarios of the electric stapler. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] FIG1 is a schematic diagram of an instrument platform of an electric stapler according to an embodiment of the present application;

[0020] FIG2 is a top view of an instrument platform of an electric stapler according to an embodiment of the present application;

[0021] FIG3 is a top view of a swing head device according to an embodiment of the present application;

[0022] FIG4 is a schematic diagram of the cooperation between the power mechanism and the first transmission member according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] 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.

[0024] The present application provides a head swing device and an electric stapler including the same. The electric stapler includes an instrument platform and a stapler head connected to the distal end of the instrument platform. The head swing device includes a power mechanism and a transmission mechanism. The power mechanism includes a motor and an output shaft. When activated, the motor is configured to drive the output shaft to move axially along the stapler. The proximal end of the transmission mechanism is connected to the output shaft, and the distal end of the transmission mechanism is connected to the stapler head. The transmission mechanism is configured to be driven by the output shaft to move axially along the stapler, while also driving the stapler head to swing laterally relative to the instrument platform. To adjust the angle of the stapler head, the operator activates the motor of the power mechanism. The output shaft drives the transmission mechanism to move axially along the stapler, while the transmission mechanism drives the stapler head to move laterally relative to the instrument platform. This achieves automatic head swing of the electric stapler. The operator can adjust the stapler head to the desired angle with a single hand, improving the user experience of the stapler. The operator can adjust the angle of the stapler head to suit different usage scenarios and surgical needs, making the use of the stapler head more flexible and expanding the range of usage scenarios for the electric stapler.

[0025] The specific structure of the swing head device and the electric stapler in a specific example is introduced below with reference to the accompanying drawings. It is understood that the accompanying drawings and the following description are only examples and are not intended to limit the scope of protection of this application. In this application, the distal end and the proximal end are relative to the operator. The distal end is the one away from the operator, that is, close to the surgical site, and the proximal end is the one close to the operator, that is, away from the surgical site. The axial direction refers to the direction from the distal end to the proximal end or the proximal end to the distal end of the stapler, the transverse direction refers to the width direction of the stapler, and the longitudinal direction is the height direction. As shown in the perspective of Figure 2, the S1 direction or the direction opposite to the S1 direction is the axial direction, the S2 direction or the direction opposite to the S2 direction is the transverse direction, and the up and down direction in the perspective of Figure 1 is the longitudinal direction. The outside and the inside are relative to the axis S0 of the stapler (shown in Figure 3). The side close to the axis S0 of the stapler is the inside, and the side away from the axis S0 of the stapler is the outside.

[0026] Figures 1 and 2 show the partial structure of an electric stapler according to an embodiment of the present application. The electric stapler includes an instrument platform and a nail head (not shown in the figure) connected to the distal end of the instrument platform, and the nail head includes an anvil and a nail magazine arranged relatively to each other. The instrument platform includes a housing and a firing drive motor 6, a rack 5 and a swing head device arranged inside the housing. The output shaft of the firing drive motor 6 is engaged with the rack 5 through a gear. After the nail head is placed in the surgical position and the surgical preparations are made, the firing drive motor 6 is started, and the firing drive motor 6 drives the rack 5 to move along the axial direction of the stapler, thereby closing the jaws of the nail head and executing the firing of the stapler, suturing and cutting the tissue through the nail head, and the jaws of the nail head can be automatically opened after the stapler is fired.

[0027] As shown in Figures 1 to 3, the head swinging device includes a power mechanism 1 and a transmission mechanism 2. The power mechanism 1 includes a motor 11 and an output shaft 14. When the motor 11 is activated, it is configured to drive the output shaft 14 to move axially along the stapler. The forward and reverse rotations of the motor 11 can drive the output shaft 14 to move in different directions. The proximal end of the transmission mechanism 2 is connected to the output shaft 14, and the distal end of the transmission mechanism 2 is connected to the proximal end of the stapler head. The transmission mechanism 2 is configured to be driven by the output shaft 14 to move axially along the stapler, while driving the stapler head to swing laterally along the stapler relative to the instrument platform, thereby achieving electric automatic head swinging.

[0028] As shown in Figures 3-5, the transmission mechanism 2 includes a first transmission member 21, a connecting member 22, and a second transmission member 23. The output shaft 14 is connected to the proximal end 211 of the first transmission member 21. The distal end 212 of the first transmission member 21 and the proximal end of the second transmission member 23 are respectively connected to the connecting member 22. The distal end of the second transmission member 23 is connected to the proximal end of the nail head. The power mechanism 1 sequentially drives the second transmission member 23 axially through the first transmission member 21 and the connecting member 22. The first and second transmission members 21 and 23 can be rods, plates, tubular members, etc. From the perspective of Figure 3, when the power mechanism 1 drives the second transmission member 23 in the proximal direction, the nail head is driven to swing in the direction SW1 in Figure 3. When the power mechanism 1 drives the second transmission member 23 in the distal direction, the nail head is driven to swing in the direction SW2 in Figure 3. The longer the travel of the second transmission member 23, the greater the swing angle of the nail head. The swing angle of the nail head can be controlled by controlling the travel of the motor 11.

[0029] Therefore, by adopting this head swing device, when it is necessary to adjust the angle of the nail head, the operator starts the motor 11 of the power mechanism 1, drives the transmission mechanism 2 to move axially along the stapler through the output shaft 14, and drives the nail head to move laterally along the stapler relative to the instrument platform through the transmission mechanism 2, thus realizing the electric automatic head swing of the electric stapler. The operator can adjust the nail head to the required angle with one hand, thereby improving the user experience of the stapler. Buttons for controlling the forward and reverse rotation of the motor 11 can be set on the housing of the instrument platform. The operator can realize the lateral swing of the electrically driven nail head by pressing the corresponding button. The structure is simple and easy to use. The operator can adjust the angle of the nail head according to different usage scenarios and surgical needs. The use of the nail head is more flexible, which broadens the range of usage scenarios of the electric stapler.

[0030] As shown in Figure 4, the motor 11 is a rotary motor, and the power mechanism 1 also includes a reducer 12 and a motion conversion assembly 13. The motor 11 is connected to the output shaft 14 through the reducer 12 and the motion conversion assembly 13 in sequence. The motion conversion assembly 13 is configured to convert the rotary motion output by the motor 11 into linear motion. The motion conversion assembly 13 may, for example, include a ball screw structure, or include a screw-nut matching structure, etc. The present application is not limited to this. In another embodiment, the motor 11 may be a linear motor, and the power mechanism 1 also includes a reducer 12. The motor 11 is directly connected to the output shaft 14 through the reducer 12.

[0031] As shown in Figure 3, the stapler head can be driven to rotate around the axis S0 of the stapler, making the use of the stapler head more flexible and further expanding the range of use scenarios of the electric stapler. When the stapler head rotates around the axis, the second transmission member 23 also rotates around the axis with the stapler head.

[0032] In this embodiment, the connecting member 22 includes a rotating connecting portion and a fixed portion 223. The distal end 212 of the first transmission member 21 is rotatably connected to the rotating connecting portion, and the proximal end of the second transmission member 23 is non-rotatably connected to the fixed portion 223. The figure shows the shape of the connecting member 22 by way of example, but the present application is not limited thereto. When the nail head rotates around the axis, the second transmission member 23 and the connecting member 22 also rotate around the axis, while the first transmission member 21 does not rotate therewith, thereby maintaining the stability of the connection between the first transmission member 21 and the output shaft 14. Therefore, this embodiment can simultaneously realize the electric swing function and the rotation function around the axis of the nail head, and the electric swing function and the rotation function around the axis do not interfere with each other. In this embodiment, the connecting member 22 is provided with an opening 221, which is a circular hole or an approximately circular hole. The rotary connection portion includes a hole wall 222 surrounding the opening 221. The distal end 212 of the first transmission member 21 forms a hook-shaped portion that is retained on the hole wall 222. The opening of the hook-shaped portion is larger than the thickness of the hole wall 222, allowing the hook-shaped portion to slide in connection with the hole wall 222. When the second transmission member 23 and the connecting member 22 rotate about the axis, the first transmission member 21 does not rotate, and the distal end 212 of the first transmission member 21 slides on the hole wall 222. The connection between the proximal end of the second transmission member 23 and the fixed portion 223 of the connecting member 22, the connection between the distal end of the second transmission member 23 and the proximal end of the nail head, and the connection between the proximal end 211 of the first transmission member 21 and the output shaft 14 can be one or more of a snap-fit ​​connection, a fitting connection, a sleeve connection, a welding connection, a pin connection, a screw connection, a riveted connection, etc., and this application is not limited thereto.

[0033] As can be seen from Figures 2 and 4 , the motor 11 is located outside the rack 5. The first transmission member 21 includes a first section, a bent portion 213, and a second section, which are arranged in sequence from the proximal end to the distal end. The first section is between the proximal end 211 of the first transmission member 21 and the bent portion 213, and the second section is between the distal end 212 of the first transmission member 21 and the bent portion 213. The first section is located outside the second section, that is, the second section is retracted inward relative to the first section, which helps to reduce the external dimensions of the connecting member 22 that cooperates with the second section. As shown in Figure 4, the first transmission member 21 is a sheet-like rod. The distal end 212 of the first transmission member 21 is provided with a torsion portion 214 to twist the surface direction of the first transmission member 21 at the distal end from parallel to the longitudinal direction to parallel to the transverse direction. In another embodiment, the torsion portion 214 may not be provided, and the distal end 212 of the first transmission member 21 may be clamped on the hole wall 222 below the opening 221. In this embodiment, the structural design and positional arrangement of the motor 11, rack 5, first transmission member 21, second transmission member 23 and connecting member 22 make the overall structure more compact, which is conducive to reducing the overall volume of the instrument platform of the electric stapler.

[0034] The above embodiment illustrates the transmission mechanism 2 as comprising a first transmission member 21, a connecting member 22, and a second transmission member 23. In other embodiments, the first transmission member 21 and the second transmission member 23 may also be connected in other axially fixed but relatively rotatable manners. In embodiments where the nail head does not need to rotate about the axis, the first transmission member 21, the connecting member 22, and the second transmission member 23 may also be integrally formed as a single component, which also falls within the scope of protection of this application.

[0035] 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 head swing device, characterized in that: Used for an electric stapler, the electric stapler comprises an instrument platform and a staple head connected to the distal end of the instrument platform, the swing head device comprises: A power mechanism, comprising a motor and an output shaft, wherein the motor is configured to drive the output shaft to move along the axial direction of the stapler; A transmission mechanism, wherein the proximal end of the transmission mechanism is connected to the output shaft, the distal end of the transmission mechanism is connected to the nail head, and the transmission mechanism is configured to be driven by the output shaft to move along the axial direction of the stapler, and drive the nail head to swing laterally along the stapler relative to the instrument platform.

2. The head swing device according to claim 1, characterized in that: The motor is a linear motor, and the power mechanism further includes a reducer, through which the motor is connected to the output shaft.

3. The head swing device according to claim 1 or 2, characterized in that: The motor is a rotary motor, and the power mechanism further includes a motion conversion component, through which the motor is connected to the output shaft, and the motion conversion component is configured to convert the rotary motion output by the motor into linear motion.

4. The head swing device according to claim 1, characterized in that: The transmission mechanism comprises a first transmission member, a connecting member and a second transmission member, and the output shaft is connected to the proximal end of the nail head through the first transmission member, the connecting member and the second transmission member in sequence.

5. The head swing device according to claim 4, characterized in that: The connecting member includes a rotating connecting portion and a fixing portion, the distal end of the first transmission member is rotatably connected to the rotating connecting portion, and the proximal end of the second transmission member is non-rotatably connected to the fixing portion.

6. The head swing device according to claim 5, characterized in that: The connecting member is provided with an opening, the rotating connecting portion includes a hole wall surrounding the opening, and the distal end of the first transmission member is slidably connected to the hole wall.

7. The head swing device according to claim 5, characterized in that: The first transmission member includes a first section and a second section, the first section is located at the proximal end of the second section, and the first section and the second section are connected via a bending portion so that the first section is located laterally outside the second section.

8. The head swing device according to claim 5, characterized in that: The first transmission member is a sheet-shaped rod member, and a twisting portion is provided at the distal end of the first transmission member so that the surface direction of the first transmission member at the distal end is twisted from being parallel to the longitudinal direction to being parallel to the transverse direction.

9. An electric stapler, characterized in that: The invention comprises the swing head device according to any one of claims 1 to 8.

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