CN-122004969-A - Electric anastomat based on gear box transmission and provided with reset mechanism

Abstract

The invention relates to an electric anastomat with a reset mechanism based on gear box transmission, which is characterized in that a main support is arranged in a handle of the electric anastomat, a rack is arranged in the main support, the rack extends along the front-back direction, the front end of the rack is connected with a cutting knife of the electric anastomat through a connecting piece, a driving mechanism is arranged in the handle, a gear box which is connected with the driving mechanism in a matched manner to drive the rack to move forwards is also arranged in the handle, the gear box comprises a first bevel gear, a second bevel gear, a side cover, a rotating shaft, a pulling block and a gear, and the electric anastomat also comprises a reset device. According to the invention, the gear box is matched with the resetting device, so that the resetting of the rack can be realized quickly and stably, and the problems that the existing electric cavity mirror knife-returning device cannot be reused after being started and the follow-up maintenance needs to be completely disassembled and recombined are solved.

Inventors

• Ruan Zhilun
• MO YIFAN
• LI CHAONENG
• ZHANG FAN

Assignees

• 施爱德（厦门）医疗器材有限公司

Dates

Publication Date

20260512

Application Date

20251201

Claims (5)

1. 1. An electric anastomat with a reset mechanism based on gear box transmission is characterized in that a main body is an electric anastomat (1), a main bracket (11) is arranged in a handle of the electric anastomat (1), a rack (111) is arranged in the main bracket (11), the rack (111) extends along the front-back direction, and the front end of the rack (111) is connected with a cutting knife of the electric anastomat (1) through a connecting piece; The novel electric bicycle is characterized in that a gear box which is connected with a driving mechanism in a matching way to drive a rack (111) to move forwards is further arranged in the handle, the gear box comprises a first bevel gear (112), a second bevel gear (113), a side cover (114), a rotating shaft (115), a pull block (116) and a gear (117), the side cover (114) is arranged in the handle, the rotating shaft (115) is rotatably arranged on the side cover (114), the gear (117) and the first bevel gear (112) are coaxially arranged on the rotating shaft (115) in a penetrating way, the gear (117) is meshed with the rack (111), a shaft hole of the first bevel gear (112) is a splined hole, the rotating shaft (115) is provided with a spline (115-1), the second bevel gear (113) is connected with the driving mechanism, and the second bevel gear (113) is meshed with the first bevel gear (112); The pull block (116) is arranged at the end part of the rotating shaft (115), the pull block (116) is rotationally connected with the first bevel gear (112), and a spline hole of the first bevel gear (112) is separated from the spline (115-1) or is re-embedded with the spline (115-1) by moving the pull block (116); The automatic reset device comprises a screw rod (12) extending along the front-back direction and a nut (121) sleeved on the screw rod (12) and in threaded fit with the screw rod (12), wherein the screw rod (12) is arranged above a rack (111), a sliding block (122) is fixedly connected to the bottom end of the nut (121), a sliding rail (111-1) extending in the front-back direction is arranged at the top end of the rack (111), and the sliding block (122) extends into the sliding rail (111-1).
2. 2. The electric stapler with the reset mechanism based on the gearbox transmission of claim 1, wherein the driving mechanism is a motor (2), and the second bevel gear (113) is installed on an output shaft of the motor (2).
3. 3. The electric anastomat with the reset mechanism based on the gearbox transmission of claim 1 is characterized in that the main support (11) is also connected with a firing handle (3), and the firing handle (3) is electrically connected with a driving component and used for controlling the driving component to drive the cutting knife to move forwards and backwards.
4. 4. The electric anastomat with the reset mechanism based on the gearbox transmission according to claim 1 is characterized in that a rotating block is arranged at the rear end of the screw rod (12), and a hexagonal groove (3) is formed in the rotating block.
5. 5. The electric stapler with the resetting mechanism based on the gear box transmission of claim 1, wherein one side of the first bevel gear (112) close to the pull block (116) is provided with an annular limit groove; The pull block (116) is provided with a sleeve extending to the annular limiting groove, the end part of the sleeve is provided with an annular edge (116-1), and the annular edge (116-1) is in limit fit connection with the annular limiting groove.

Description

Electric anastomat based on gear box transmission and provided with reset mechanism Technical Field The invention relates to the field of medical appliances, in particular to an electric anastomat with a reset mechanism based on gear box transmission. Background The anastomat is a common medical device in surgical medical instruments, can replace manual suturing operation, and can realize wound anastomosis, tissue cutting and other actions only by operating the anastomat. Therefore, the surgical instrument is widely applied to open or minimally invasive common surgery, chest surgery, pediatric surgery and other operations. The electric anastomat is self-powered equipment capable of realizing partial action automation in the operation process of the anastomat, and generally comprises a motor, a multi-stage gear and a rack, wherein the multi-stage gear is connected with the motor, the multi-stage gear is driven after the motor is started to drive the rack connected with the upper gear to linearly move, the rack is connected with a mandrel, the linear movement of the rack pushes the mandrel, the mandrel continues to push a cutting knife to enter a nail bin assembly, so that a nail is ejected from the nail bin assembly and is formed by the action of a nail forming piece, and then automatic cutting and sewing operation is finished. In the use process of the traditional electric anastomat, when the electric anastomat encounters power failure or faults, the situation that the cutting knife is returned by a forward and backward method possibly occurs, and if the cutting knife cannot be returned in time at this moment, the next operation flow cannot be entered, and bad influence is caused on the operation. The invention discloses a manual cutter returning device of an electric endoscope anastomat, which is disclosed in Chinese patent publication No. CN217488732U, and is named as a manual cutter returning device of the electric endoscope anastomat, and comprises a machine body and a cutter returning mechanism, wherein the machine body comprises a driving component arranged in the electric endoscope anastomat and a shell arranged on the driving component, the cutter returning mechanism is arranged in the shell and comprises a reset clamping piece pin transversely arranged on the shell, a forced reset clamping piece arranged on the reset clamping piece pin, a reset handle sleeved on the reset clamping piece pin and positioned on the forced reset clamping piece side, a limiting column fixed on the reset handle, a cutter returning rod sleeved on the limiting column, a rack transversely arranged on the shell and positioned below the cutter returning rod, a manual cutter returning tooth arranged on the rack and a forced reset button arranged outside the reset handle. The manual knife returning device in the patent can return the knife when the electric function of the electric endoscope anastomat fails, but needs to forcibly reset the pressing sheet before returning the knife, so that the operation is more troublesome. And after traditional manual back knife device, unable reuse, follow-up maintenance need carry out whole dismantlement, reassemble, and is relatively more troublesome. Disclosure of Invention The invention aims to provide an electric anastomat based on gear box transmission and provided with a reset mechanism, which can solve the problems that the existing electric cavity mirror knife returning device cannot be reused after being started and the follow-up maintenance needs to be completely disassembled and recombined. The invention is realized by the following technical scheme that the electric anastomat based on gear box transmission and provided with a reset mechanism is characterized in that a main body is an electric anastomat, a main bracket is arranged in a handle of the electric anastomat, a rack is arranged in the main bracket, the rack extends along the front-back direction, and the front end of the rack is connected with a cutting knife of the electric anastomat through a connecting piece; The handle is internally provided with a gear box which is matched and connected with the driving mechanism to drive the rack to move forwards, the gear box comprises a first bevel gear, a second bevel gear, a side cover, a rotating shaft, a pulling block and a gear, wherein the side cover is arranged in the handle; the pull block is arranged at the end part of the rotating shaft and is rotationally connected with the first bevel gear, and the spline hole of the first bevel gear is separated from the spline or is re-embedded with the spline by moving the pull block; The device comprises a rack, a reset device and a control device, wherein the reset device comprises a screw rod extending along the front-back direction and a nut sleeved on the screw rod and in threaded fit with the screw rod, the screw rod is arranged above the rack, the bottom end of the nut is fixedly connected with a sliding block, the top end o