Electric anastomat based on gearbox transmission and provided with reset mechanism

Abstract

The invention relates to an electric anastomat based on gearbox transmission and provided with a reset mechanism, a main body is the electric anastomat, a main support is arranged in a handle of the electric anastomat, and a rack is arranged in the main support; the rack extends in 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. A driving mechanism is arranged in the handle; a gear box which is in matched connection with the driving mechanism to drive the rack to move forwards is further arranged in the handle; the gear box comprises a first bevel gear, a second bevel gear, a side cover, a rotating shaft, a pull block and a gear; a reset device is further included. The gear box is matched with the resetting device, resetting of the rack can be rapidly and stably achieved, and then the problems that an existing electric endoscope cutter returning device cannot be used again after being started, and subsequent maintenance needs to be completely disassembled and recombined are solved.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more particularly to an electric stapler based on gearbox transmission and equipped with a reset mechanism. Background Technology

[0002] A surgical stapler is a commonly used medical device in surgical procedures. It can replace manual suturing, allowing for wound anastomosis and tissue cutting simply by operating the stapler. Therefore, it is widely used in open or minimally invasive general surgery, thoracic surgery, and pediatric surgery. An electric stapler is a device with its own motor drive, automating some of the actions during stapler operation. An electric stapler generally includes a motor, multi-stage gears, and a rack. The multi-stage gears are connected to the motor. After the motor starts, the multi-stage gears are driven, causing the rack connected to its upper gear to move linearly. The rack is connected to a mandrel, and the linear movement of the rack pushes the mandrel. The mandrel further pushes the cutting blade into the staple cartridge assembly, causing the staples to be ejected from the staple cartridge assembly and shaped by the staple forming component, thus completing the automatic cutting and suturing operation.

[0003] In the use of traditional electric staplers, when the power supply fails or malfunctions, the cutting blade may move forward but not back. If the cutting blade cannot be retracted in time, it may prevent the next step of the surgical procedure from being completed, which may have a negative impact on the surgery. Chinese invention patent CN217488732U, entitled "A Manual Retraction Device for an Electric Laparoscopic Anastomotic Device," discloses a manual retraction device for an electric laparoscopic anastomotic device, comprising: a body and a retraction mechanism. The body includes a drive assembly disposed within the electric laparoscopic anastomotic device and a housing mounted on the drive assembly. The retraction mechanism is installed within the housing and includes a reset pin mounted horizontally on the housing, a forced reset pin mounted on the reset pin, a reset handle fitted onto the reset pin and located on the side of the forced reset pin, a limiting post fixed to the reset handle, a retraction rod sleeved on the limiting post, a rack extending horizontally through the housing and located below the retraction rod, manual retraction teeth formed on the rack, and a forced reset button disposed outside the reset handle. The manual retraction device in this patent, while capable of retraction when the electric function of the electric laparoscopic stapler fails, requires a forced repositioning of the pressure plate before retraction, making the operation rather cumbersome. Furthermore, this type of retraction device is positioned above the stapler during use, making operation inconvenient and prone to wobbling, which can affect the surgery. Moreover, traditional manual retraction devices cannot be reused after use, requiring complete disassembly and reassembly for subsequent maintenance, which is relatively troublesome. Summary of the Invention

[0004] The purpose of this invention is to provide an electric anastomosis device based on gearbox transmission and equipped with a reset mechanism, which can solve the problem that existing electric laparoscopic knife return devices cannot be used again after activation, and subsequent maintenance requires complete disassembly and reassembly.

[0005] This invention is achieved through the following technical solution: an electric stapler based on gearbox transmission and equipped with a reset mechanism, the main body of which is an electric stapler, a main support is provided inside the handle of the electric stapler, and a rack is provided inside the main support; the rack extends in the front-back direction, and the front end of the rack is connected to the cutting blade of the electric stapler through a connector; a drive mechanism is provided inside the handle;

[0006] The handle also contains a gearbox that connects to the drive mechanism to move the rack forward. The gearbox includes a first bevel gear, a second bevel gear, a side cover, a rotating shaft, a pull block, and gears. The side cover is installed inside the handle, and the rotating shaft is rotatably mounted on the side cover. Both the gears and the first bevel gear are coaxially mounted on the rotating shaft, and the gears mesh with the rack. The shaft hole of the first bevel gear is a spline hole, and the rotating shaft is provided with splines. The second bevel gear is connected to the drive mechanism, and the second bevel gear meshes with the first bevel gear.

[0007] The pull block is installed at the end of the rotating shaft and is rotatably connected to the first bevel gear. By moving the pull block, the spline hole of the first bevel gear can be disengaged from the spline or re-engaged with the spline.

[0008] It also includes a reset device, which includes a lead screw extending in the front-back direction and a nut sleeved on the lead screw and threadedly engaged with the lead screw; wherein, the lead screw is located above the rack, a sliding block is fixedly connected to the bottom end of the nut, and a sliding rail extending in the front-back direction is provided at the top end of the rack, with the sliding block extending into the sliding rail.

[0009] Compared with previous technologies, the beneficial effects of the present invention are as follows:

[0010] 1. The present invention utilizes a gearbox in conjunction with a reset device to quickly and stably reset the rack, thereby solving the problem that existing electric laparoscopic knife return devices cannot be used again after activation, and subsequent maintenance requires complete disassembly and reassembly.

[0011] 2. During maintenance, the gearbox and reset device can be repaired simply by removing the pressure cap and the top cover, which solves the problem that the entire product needs to be completely disassembled and reassembled during subsequent maintenance after the manual return device of the existing electric endoscopic anastomosis device is activated. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention;

[0013] Figure 2 This is a schematic diagram of the disassembled structure of the present invention;

[0014] Figure 3 This is a schematic diagram of the main support structure of the present invention;

[0015] Figure 4 This is a schematic diagram of the internal structure of the main support component of the present invention.

[0016] Figure 5 This is a cross-sectional view of the main support portion of the present invention.

[0017] Labeling Explanation: 1. Body, 11. Main Support, 111. Rack, 111-1. Sliding Rail, 112. First Bevel Gear, 113. Second Bevel Gear, 114. Side Cover, 115. Shaft, 115-1. Spline, 116. Pull Block, 116-1. Annular Edge, 117. Gear, 12. Lead Screw, 121. Nut, 122. Sliding Block, 123. Hexagonal Slot, 2. Motor, 3. Firing Handle. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description:

[0019] like Figures 1 to 5 As shown, an electric stapler based on gearbox transmission and with a reset mechanism is provided. The main body is an electric stapler 1. The handle of the electric stapler 1 is provided with a main support 11, and the main support 11 is provided with a rack 111. The rack 111 extends in the front-back direction, and the front end of the rack 111 is connected to the cutting blade of the electric stapler 1 through a connector. The handle is provided with a drive mechanism.

[0020] The handle also contains a gearbox that connects to the drive mechanism to move the rack 111 forward. The gearbox includes 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 installed inside the handle, and the rotating shaft 115 is rotatably mounted on the side cover 114. The gear 117 and the first bevel gear 112 are coaxially mounted on the rotating shaft 115. The gear 117 meshes with the rack 111. The shaft hole of the first bevel gear 112 is a spline hole, and the rotating shaft 115 is provided with a spline 115-1. The second bevel gear 113 is connected to the drive mechanism, and the second bevel gear 113 meshes with the first bevel gear 112.

[0021] The pull block 116 is installed at the end of the rotating shaft 115 and is rotatably connected to the first bevel gear 112. By moving the pull block 116, the spline hole of the first bevel gear 112 can be disengaged from the spline 115-1 or re-engaged with the spline 115-1.

[0022] The device also includes a reset mechanism, comprising a lead screw 12 extending in the front-to-back direction and a nut 121 sleeved on and threadedly engaged with the lead screw 12. The lead screw 12 is positioned 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-to-back direction is provided at the top end of the rack 111, and the sliding block 122 extends into the sliding rail 111-1. This invention utilizes a gearbox in conjunction with the reset mechanism to quickly and stably reset the rack, thus solving the problem that existing electric laparoscopic stapler return devices cannot be reused after activation, and subsequent maintenance requires complete disassembly and reassembly. During maintenance, only the pressure cap and top cover need to be removed to repair the gearbox and reset mechanism, solving the problem that existing electric laparoscopic stapler manual return devices require complete disassembly and reassembly of the entire product during subsequent maintenance.

[0023] Furthermore, the drive mechanism is a motor 2, and the second bevel gear 113 is mounted on the output shaft of the motor 2. The motor 2 is a conventional drive mechanism, so it will not be described in detail here.

[0024] Furthermore, a firing handle 3 is also connected to the main support 11. The firing handle 3 is electrically connected to the drive assembly and is used to control the drive assembly to drive the cutting blade to move back and forth.

[0025] Furthermore, a rotating block is installed at the rear end of the lead screw 12, and a hexagonal groove 123 is provided in the rotating block. The hexagonal groove 123 is used to cooperate with an internal hex wrench. By rotating the lead screw with the internal hex wrench, the lead screw nut drives the rack to move in the Y direction, thereby realizing the tool retraction and reset.

[0026] Furthermore, the first bevel gear 112 is provided with an annular limiting groove on the side near the pull block 116;

[0027] The pull block 116 is provided with a sleeve extending to the annular limiting groove, and the end of the sleeve is provided with an annular edge 116-1, which is connected to the annular limiting groove for limiting.

[0028] In summary, the working principle of this invention is as follows:

[0029] When the electric stapler of this invention malfunctions, by moving the pull block 116, the annular edge 116-1 inside the pull block 116 engages with the annular limiting groove of the first bevel gear 112, causing the first bevel gear 112 to move together, disengaging it from the second bevel gear 113. Then, by rotating the lead screw 12, the lead screw 12 moves the nut backward, and through the action of the sliding block 122 and the sliding rail 111-1, the rack 111 is gradually retracted, achieving the reset of the rack 111. Alternatively, an Allen wrench can be used to engage the hexagonal groove 123, and rotating the Allen wrench causes the lead screw 12 to rotate and move backward.

[0030] Although the present invention has been illustrated and described through specific embodiments and alternative methods, it should be understood that various changes and modifications may be made without departing from the spirit and scope of the invention. Therefore, it should be understood that the present invention is not limited in any sense except by the appended claims and their equivalents.

Claims

1. An electric stapler based on gearbox transmission and with a reset mechanism, the main body of which is an electric stapler (1), the handle of the electric stapler (1) is provided with a main support (11), the main support (11) is provided with a rack (111); the rack (111) extends in the front-back direction, and the front end of the rack (111) is connected to the cutting blade of the electric stapler (1) through a connector; the handle is provided with a drive mechanism; Its features are: The handle also contains a gearbox that is connected to the drive mechanism to drive the rack (111) forward. The gearbox includes 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 installed inside the handle, and the rotating shaft (115) is rotatably installed on the side cover (114). The gear (117) and the first bevel gear (112) are coaxially mounted on the rotating shaft (115). The gear (117) meshes with the rack (111). The shaft hole of the first bevel gear (112) is a spline hole, and the rotating shaft (115) is provided with a spline (115-1). The second bevel gear (113) is connected to the drive mechanism, and the second bevel gear (113) meshes with the first bevel gear (112). The pull block (116) is installed at the end of the rotating shaft (115), and the pull block (116) is rotatably connected to the first bevel gear (112). By moving the pull block (116), the spline hole of the first bevel gear (112) is disengaged from the spline (115-1) or re-engaged with the spline (115-1). It also includes a reset device, which includes a lead screw (12) extending in the front-back direction and a nut (121) sleeved on the lead screw (12) and threadedly engaged with the lead screw (12); wherein the lead screw (12) is located above the rack (111), the bottom end of the nut (121) is fixedly connected to a sliding block (122), the top end of the rack (111) is provided with a sliding rail (111-1) extending in the front-back direction, and the sliding block (122) extends into the sliding rail (111-1).

2. The electric stapler based on gearbox transmission and equipped with a reset mechanism according to claim 1, characterized in that: The driving mechanism is a motor (2), and the second bevel gear (113) is mounted on the output shaft of the motor (2).

3. The electric stapler based on gearbox transmission and equipped with a reset mechanism according to claim 1, characterized in that: The main support (11) is also connected to a firing handle (3), which is electrically connected to the drive assembly and is used to control the drive assembly to drive the cutting blade to move back and forth.

4. The electric stapler based on gearbox transmission and equipped with a reset mechanism according to claim 1, characterized in that: The rear end of the lead screw (12) is equipped with a rotating block, and the rotating block is provided with a hexagonal groove (3).

5. An electric stapler based on gearbox transmission and equipped with a reset mechanism according to claim 1, characterized in that: The first bevel gear (112) has an annular limiting groove on the side near the pull block (116); The pull block (116) is provided with a sleeve extending to the annular limiting groove, and the end of the sleeve is provided with an annular edge (116-1), which is connected to the annular limiting groove for limiting.

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