一种电动圆形吻合器的手柄组件及电动圆形吻合器

Abstract

本实用新型涉及一种电动圆形吻合器的手柄组件及电动圆形吻合器，该手柄组件包括手柄壳体、闭合组件、击发组件和控制系统。其中闭合组件包括沿远近方向延伸的中心杆和驱动中心杆在第一初始位置和夹闭位置之间运动的操作件，击发组件包括击发构件、用于驱动击发构件在第二初始位置和击发位置之间运动的电机、设置在电机和击发构件之间的传动机构，电机控制板电机在中心杆位于夹闭位置时才能够工作，并能够控制电机在驱动击发机构达到击发位置时反转。本实用新型提供的圆形吻合器的手柄组件结构简单、紧凑能够减小圆形吻合器操作端尺寸，提高操作者的使用体验，同时能够防误操作，保证使用时的安全性。

Claims

1. A handle assembly for a powered circular stapler, comprising: It includes a handle housing and a closing assembly, a firing assembly, and a control system disposed within the handle housing. The closing assembly includes a central rod (111) extending in the proximal direction and an operating element (112) connected to the central rod (111) and capable of driving the central rod (111) to move along its axial direction between a first initial position and a clamping position. The firing assembly includes a firing member (121) slidably sleeved on the distal end of the central rod (111), a motor (123) for driving the firing member (121) to move along its axial direction between a second initial position and a firing position, and a transmission mechanism disposed between the motor (123) and the firing member (121). The transmission mechanism includes a screw (122) extending axially parallel to the central rod and capable of rotating only in its own position around its own axis, and a transmission component movably sleeved on the screw (122). One end of the screw (122) is fixedly connected to the shaft of the motor (123). The transmission component includes a first part (1221) integrally formed or fixedly connected to a second part (1222). The first part (1221) is sleeved on the screw (122) and threadedly connected to the screw (122). The second part (1222) is fixedly connected to the proximal end of the firing member (121). The control system includes a motor control board (131) connected to and capable of controlling the motor (123), a first sensor assembly capable of transmitting a first signal to the motor control board (131) when the center rod (111) is in the clamped position, a second sensor assembly capable of transmitting a second signal to the motor control board (131) when the firing member (121) is in the second initial position, and a third sensor assembly capable of transmitting a third signal to the motor control board (131) when the firing member (121) is in the firing position. When the motor control board (131) receives the first signal, the motor (123) can work; when the motor control board (131) does not receive the first signal, the motor (123) cannot work. During the period from when the motor control board (131) receives the second signal to when it receives the third signal, the motor can only drive the firing member (121) to move from the second initial position to the firing position. During the period from when the motor control board (131) receives the third signal to when it receives the second signal, the motor can only drive the firing member (121) to move from the firing position to the second initial position.

2. The handle assembly of an electric circular anastomat according to claim 1, characterized in that, The first initial position is the farthest position that the center rod (111) can reach, and the clamping position is the nearest position that the center rod (111) can reach. The second initial position is the nearest position that the firing member (121) can reach, and the firing position is the farthest position that the firing member (121) can reach.

3. The handle assembly of a motorized circular anastomat according to claim 2, wherein During the period from when the motor control board (131) receives the second signal to when it receives the third signal, the shaft of the motor (123) can only rotate forward to make the screw (122) rotate forward, thereby causing the transmission component to move along the screw (122) towards the distal end near the screw (122), thereby driving the firing member (121) to move towards the firing position. During the period from when the motor control board (131) receives the third signal to when it receives the second signal, the shaft of the motor (123) can only reverse to reverse the screw (122), thereby causing the transmission component to move along the screw (122) towards the proximal end of the screw (122), thereby driving the firing member (121) to move towards the second initial position.

4. The handle assembly of an electric circular anastomat according to claim 1, characterized in that, The screw (122) and the motor are respectively located below the central rod, and the shafts of the screw (122) and the motor are coaxial. And / or, the second part (1222) extends upward from the first part (1221) and has a U-shaped structure, with the central rod (111) passing through the second part (1222). And / or, the closing assembly further includes a cross link (113) capable of moving with the central rod (111) in the same direction as the central rod (111), and a limiting component disposed between the central rod (111) and the cross link (113) capable of limiting the movement distance of the cross link (113). The cross link (113) includes a cross link body (1131) located on one side of the center link (111) and parallel to the center link (111), and an annular portion (1132) fixedly connected to the proximal end of the cross link body (1131) and sleeved on the center link (111). The limiting assembly includes a limiting groove (1141) extending in the proximal direction at the proximal end of the main body of the cross link (1131), a stop (1142) located in the limiting groove (1141) and fixedly connected to the central rod (111), a limiting portion (1143) fixedly disposed on the central rod (111) away from the stop (1142) and close to the proximal end of the central rod (111), and a spring (1144) sleeved on the central rod (111) and located between the annular portion (1132) and the limiting portion (1143). The closing assembly also includes an indicator assembly for indicating the position of the central rod (111). The indicator assembly includes an indicator needle (1151) rotatably disposed in the handle housing and an elastic element (1152) disposed between the indicator needle (1151) and the handle housing. The distal end of the cross link (113) is connected to the indicator needle (1151). When the cross link (113) moves towards the proximal end with the central rod (111), it can drive the indicator needle (1151) to rotate clockwise. The elastic element (1152) always has an elastic force to drive the indicator needle (1151) to rotate counterclockwise. The handle housing is provided with a viewing window for observing the indicator needle (1151) at the position corresponding to the indicator needle (1151).

5. The handle assembly of an electric circular anastomat according to claim 1, characterized in that, The first sensor assembly includes a first trigger part (132) connected to the center rod (111) and a first position sensor (133) fixedly mounted on the handle housing. The first position sensor (133) is located above the first trigger part (132) when the center rod (111) is in the clamped position. When the first trigger part (132) is located below the first position sensor (133), the first position sensor (133) is triggered to emit the first signal. The second sensor assembly includes a second trigger part (134) connected to the transmission component, and a second position sensor (135) fixedly mounted on the handle housing. The second position sensor (135) is located above the second trigger part (134) when the transmission component is in the second initial position. When the second trigger part (134) is located below the second position sensor (135), the second position sensor (135) is triggered to emit the second signal. The third sensor assembly includes a third position sensor (136) fixedly mounted on the handle housing. The third position sensor (136) is located above the second trigger part (134) when the transmission component is in the firing position. When the second trigger part (134) is located below the third position sensor (136), the third position sensor (136) is triggered to emit the third signal.

6. The handle assembly of an electric circular anastomat according to claim 5, characterized in that, The closing assembly further includes a cross link (113) that can move with the central rod (111) and whose direction of movement is the same as that of the central rod (111), and a limiting component disposed between the central rod (111) and the cross link (113) that can limit the movement distance of the cross link (113). The cross link (113) includes a cross link body (1131) located on one side of the center link (111) and parallel to the center link (111), and an annular portion (1132) fixedly connected to the proximal end of the cross link body (1131) and sleeved on the center link (111). The limiting assembly comprises a limiting groove (1141) extending in the direction of the length of the proximal end of the transverse connecting rod body (1131), a stopper (1142) located in the limiting groove (1141) and fixedly connected with the center rod (111), a limiting part (1143) fixedly arranged on the center rod (111) and away from the stopper (1142) and close to the proximal end of the center rod (111), a spring (1144) sleeved on the center rod (111) and located between the annular part (1132) and the limiting part (1143), The first trigger part (132) is arranged on the transverse connecting rod body (1131).

7. The handle assembly of an electric circular anastomat according to claim 6, characterized in that, The closing assembly further comprises an indicating assembly for indicating the position of the center rod (111), the indicating assembly comprising an indicating needle (1151) arranged in the handle shell and capable of rotating in situ and an elastic member (1152) arranged between the indicating needle (1151) and the handle shell, the distal end of the transverse connecting rod (113) is connected with the indicating needle (1151), when the transverse connecting rod (113) moves towards the proximal end along with the center rod (111), the indicating needle (1151) can be driven to rotate clockwise, the elastic member (1152) always has an elastic force to drive the indicating needle (1151) to rotate counterclockwise, and the handle shell is provided with a visible window corresponding to the indicating needle (1151) for observing the indicating needle (1151).

8. The handle assembly of a motorized circular anastomat according to claim 5, wherein, The second part (1222) extends upward from the first part (1221) and has a U-shaped structure, the center rod (111) passes through the second part (1222), and the second trigger part (134) is arranged on the second part (1222).

9. The handle assembly of an electric circular anastomat according to claim 1, characterized in that, The control system further comprises a first switch (137) arranged on the handle shell and capable of cooperating with the motor control board (131) to control the on-off of the motor (123), and a second switch (138) arranged on the handle shell and capable of cooperating with the motor control board (131) to control the start-stop of the motor (123) in the state of being powered on. And / or, the handle assembly further comprises a battery arranged in the handle shell.

10. An electric circular stapler comprising a handle assembly (1), an elongated mechanism (2) extending from the handle assembly (1), and a stapling head assembly (3) mounted at a distal end of the elongated mechanism (2), characterized in that, The handle assembly (1) is the handle assembly according to any one of claims 1 to 9. The handle assembly (1) is the handle assembly according to any one of claims 1 to 9.

Images