Electric anastomat with manual reset device

Abstract

According to the electric anastomat with the manual reset device, 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 used for driving the rack to move is further arranged in the handle, and a driving gear is arranged on the driving mechanism. The manual reset device comprises a special-shaped shaft, a straight gear, a nut, a rocker, an elastic piece and a pawl. The electric endoscope cutter returning device is convenient to use and stable in structure, the rack can be rapidly and stably reset through the manual reset device, 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] The present application relates to the field of medical devices, in particular to an electric anastomat with a manual reset device. BACKGROUND

[0002] An anastomat is a commonly used medical device in surgical medical devices, which can replace manual suturing operation, and only needs to operate the anastomat to realize wound anastomosis, tissue cutting and other actions. Therefore, it is widely used in open or minimally invasive general surgery, thoracic surgery and pediatric surgery and other surgeries. The electric anastomat is a device with a motor drive, which can realize the automation of part of the operation process of the anastomat. The electric anastomat generally includes a motor, a multi-stage gear and a rack. The multi-stage gear is connected with the motor. After the motor is started, the multi-stage gear is driven to drive the rack connected with the upper gear to move linearly. The rack is connected with a mandrel. The linear movement of the rack pushes the mandrel. The mandrel continues to push the cutting knife into the nail cartridge assembly, so that the suturing nail is shot out of the nail cartridge assembly and is formed by the action of the suturing nail forming piece, thereby completing the automatic cutting and suturing operation.

[0003] In the use process of the traditional electric anastomat, when the electric anastomat encounters power failure or failure, the cutting knife may advance and then retreat. At this time, if the cutting knife cannot be retreated in time, it may cause the inability to enter the next surgical procedure, which has a bad influence on the surgery. In the Chinese patent for invention with the name of "manual back-knife device of electric endoscope anastomat" and the authorization announcement number CN217488732U, a manual back-knife device of electric endoscope anastomat is disclosed, which comprises a machine body and a back-knife mechanism. The machine body comprises a driving assembly arranged in the electric endoscope anastomat and a shell mounted on the driving assembly. The back-knife mechanism is installed in the shell. The back-knife mechanism comprises a reset card pin shaft horizontally arranged on the shell, a forced reset card mounted on the reset card pin shaft, a reset handle sleeved on the reset card pin shaft and located on the side of the forced reset card, a limiting column fixed on the reset handle, a rack horizontally crossing the shell and located below the rack, a manual back-knife tooth opened on the rack, and a forced reset button arranged outside the reset handle. Although the manual back-knife device in the patent can back-knife when the electric function of the electric endoscope anastomat fails, it needs to operate the forced reset tablet before back-knife, which is relatively troublesome. In addition, this kind of back-knife device is arranged above the anastomat during use, which is not very convenient to operate. It is easy to shake during operation, which affects the surgery. Moreover, the traditional manual back-knife device cannot be used again after use. Subsequent maintenance needs to be completely disassembled and reassembled, which is relatively troublesome. SUMMARY

[0004] The purpose of this invention is to provide an electric anastomosis device with a manual 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 reconstruction.

[0005] This invention is achieved through the following technical solution: an electric stapler with a manual reset device, the main body of which is an electric stapler, a main support is provided in the handle of the electric stapler, and a rack is provided in 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;

[0006] The handle is also equipped with a drive mechanism for moving the rack, and the drive mechanism is equipped with a drive gear.

[0007] It also includes a manual reset device, which includes:

[0008] The irregularly shaped shaft is rotatably mounted on the main bracket and is divided into a ratchet section, a spline section, and a lead screw section in a top-to-bottom order.

[0009] The spur gear has a spline hole and is rotatably sleeved on the lead screw section. It can be moved to the spline section by displacement to achieve synchronous rotation of the spur gear and the irregular shaft.

[0010] The nut is threaded to the lead screw section of the irregular shaft, and the nut is set in the guide channel provided by the main support;

[0011] The joystick connects to the top of the irregular shaft and drives the irregular shaft to rotate.

[0012] An elastic element is sleeved on the outer periphery of the lead screw section. The bottom of the elastic element abuts against the spur gear, and the top of the elastic element abuts against a limiting block provided on the main support.

[0013] The pawl is oscillatingly mounted on the main support and is always engaged with the ratchet section by a torsion spring.

[0014] Compared with previous technologies, the beneficial effects of the present invention are as follows:

[0015] 1. The manual reset device of the present invention is convenient to use and has a stable structure. The manual reset device can quickly and stably reset the rack, thereby solving the problem that the existing electric laparoscopic knife return device cannot be used again after activation and subsequent maintenance requires complete disassembly and reconstruction.

[0016] 2. This invention allows for maintenance of the manual reset device by simply removing the pressure cap and the top cover, thus solving the problem that existing electric endoscopic anastomotic devices require complete disassembly and reassembly of the entire product during subsequent maintenance after the manual return device is activated. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the disassembled structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the main support structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the internal structure of the main support component of the present invention.

[0021] Figure 5 This is a schematic diagram showing the rotation direction of the joystick;

[0022] Figure 6 This is a diagram showing the positions of the ratchet and pawl.

[0023] Labeling Explanation: 100 Electric Anastomosing Device, 1 Rack, 11 Main Support, 12 Pressure Cap, 111 Guide Channel, 112 Firing Handle, 2 Pin, 3 Rocker, 31 Main Rod, 32 Extension Rod, 4 Irregular Shaft, 41 Ratchet Section, 42 Lead Screw Section, 5 Spring, 6 Spur Gear, 7 Nut, 8 Pawl, 9 Drive Gear, 10 Motor. Detailed Implementation

[0024] 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:

[0025] like Figures 1-6 As shown, an electric stapler with a manual reset device is provided. The main body is an electric stapler 100. The handle of the electric stapler 100 is provided with a main support 11, and the main support 11 is provided with a rack 1. The rack 1 extends in the front-back direction, and the front end of the rack 1 is connected to the cutting blade of the electric stapler 100 through a connector.

[0026] The handle is also provided with a drive mechanism for moving the rack 1, and the drive mechanism is provided with a drive gear 9;

[0027] It also includes a manual reset device, which includes:

[0028] The irregular shaft 4 is rotatably mounted on the main bracket 11 and is divided into a ratchet section 41, a spline section and a lead screw section 42 in an upper and lower order.

[0029] The spur gear 6 has a spline hole and is rotatably sleeved on the lead screw section 42. It can be moved to the spline section by displacement to achieve synchronous rotation of the spur gear 6 and the irregular shaft 4.

[0030] Nut 7 is threadedly connected to the lead screw section 42 of the irregular shaft 4, and nut 7 is located in the guide channel 111 provided in the main support 11;

[0031] The joystick 3 is connected to the top of the irregular shaft 4 and drives the irregular shaft 4 to rotate.

[0032] An elastic element is sleeved on the outer periphery of the lead screw section 42. The bottom of the elastic element abuts against the spur gear 6, and the top of the elastic element abuts against a limiting block provided on the main support 11; and

[0033] The pawl 8 is oscillatingly mounted on the main bracket 11 and is always abutted against the ratchet section 41 by a torsion spring.

[0034] The manual reset device of this invention is convenient to use and structurally stable. It enables rapid and stable reset of 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. This invention allows for maintenance of the manual reset device by simply removing the pressure cap and top cover, resolving the issue of requiring complete disassembly and reassembly of the entire product for subsequent maintenance of existing electric laparoscopic stapler manual reset devices.

[0035] It should be noted that, due to the engagement of the ratchet section 41 and the pawl 8, the irregular shaft 4 can only rotate in one direction, such as... Figure 5 The Y direction is shown.

[0036] Furthermore, the drive mechanism is mainly a motor 10, with the drive gear 9 fixed to the output shaft of the motor 10. Both the motor 10 and the drive gear 9 utilize conventional drive technology, and therefore will not be described in detail.

[0037] Furthermore, the elastic element is a spring 5.

[0038] Furthermore, the handle has an opening at the rocker arm 3, and a cover 12 is provided at the opening to hide the rocker arm 3.

[0039] It should be noted that a housing assembly is also provided at the rear of the machine body. The housing assembly houses the entire main support 11, rack and pinion, and the entire manual reset device in a cavity provided inside. The housing assembly is not shown in the illustration in order to better show the entire manual reset device.

[0040] Furthermore, a firing handle 112 is also connected to the main support 11, and the firing handle 112 is electrically connected to the drive assembly. The firing handle 112 is a conventional technical means, which has been described in detail in the existing technical solutions, so it will not be elaborated further.

[0041] Furthermore, the rocker arm 3 includes a main rod 31, an extension rod 32, and a pin 2;

[0042] The main rod 31 has a groove at its end, and a pin hole is provided on the side of the groove; the extension rod 32 is installed in the groove, and the side of the extension rod 32 is fixedly connected to the pin 2, with the pin 2 passing through the pin hole; so that the extension rod 32 is hinged to the main rod 31.

[0043] In summary, the working principle of this invention is as follows:

[0044] When no malfunction occurs, the spur gear 6, which has a spline hole, is rotatably sleeved on the lead screw section 42. The forward and reverse rotation of the motor will also drive the spur gear to rotate forward and reverse, thereby realizing the forward or backward movement of the rack.

[0045] When the anastomosis device malfunctions, the spur gear 6, rack 1, and drive gear 9 all rotate in mesh. At this time, the pressure cover 12 is lifted, the rocker arm 6 and extension rod 32 are flipped out, and the entire rocker arm 6 is manually rotated. The rocker arm 6 drives the nut 7 to rotate and rise along the guide channel 111 through the lead screw section 42 of the special-shaped shaft 4. During the rise of the nut 7, the spur gear 6 will also rise. As the spur gear 6 rises, it will disengage from the motor gear 10. While the spline hole of the spur gear 6 and the spline section on the special-shaped shaft 4 form a fit, the spur gear 6 remains engaged with the rack 1. Finally, by continuing to rotate the rocker arm 6, the fit between the spline section and the spline hole can be used to drive the spur gear 6 to rotate and drive the rack to retract, thereby realizing the rotation of the special-shaped shaft 4 to drive the rack 1 to reset.

[0046] Because the operator might accidentally cause the rack to advance during manual rotation, the ratchet section 41 and the pawl 8 work together to ensure that the irregular shaft 4 can only rotate in one direction. Figure 5 The diagram shows the Y direction, meaning that manual operation can only move the rack backward.

[0047] 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 with a manual reset device, the main body of which is an electric stapler (100), the handle of the electric stapler (100) is provided with a main support (11), and the main support (11) is provided with a rack (1); the rack (1) extends in the front-back direction, and the front end of the rack (1) is connected to the cutting blade of the electric stapler (100) through a connector; The handle is also provided with a drive mechanism for moving the rack (1), and the drive mechanism is provided with a drive gear (9). Its features are, It also includes a manual reset device, which includes: The irregular shaft (4) is rotatably mounted on the main bracket (11) and is divided into ratchet section (41), spline section and lead screw section (42) in the order of top and bottom. The spur gear (6) is provided with a spline hole and is rotatably sleeved on the lead screw section (42). It can be moved to the spline section by displacement to realize the synchronous rotation of the spur gear (6) and the special shaft (4); Nut (7) is threaded to the lead screw section (42) of the irregular shaft (4), and nut (7) is set in the guide channel (111) provided in the main bracket (11); The rocker arm (3) is connected to the top of the irregular shaft (4) and drives the irregular shaft (4) to rotate; An elastic element is sleeved on the outer periphery of the lead screw section (42), with its bottom abutting against the spur gear (6) and its top abutting against a limiting block provided on the main support (11); and The pawl (8) is swung on the main support (11) and is always abutted against the ratchet section (41) by the torsion spring.

2. The electric stapler with a manual reset device according to claim 1, characterized in that: The drive mechanism is mainly a motor (10), and the drive gear (9) is fixed to the output shaft of the motor (10).

3. The electric stapler with a manual reset device according to claim 1, characterized in that: The elastic element is a spring (5).

4. An electric stapler with a manual reset device according to claim 1, characterized in that: The handle has an opening at the rocker arm (3), and a cover (12) is provided at the opening to hide the rocker arm (3).

5. An electric stapler with a manual reset device according to claim 1, characterized in that: The main support (11) is also connected to a firing handle (112), which is electrically connected to the drive assembly.

6. An electric stapler with a manual reset device according to claim 1, characterized in that: The rocker arm (3) includes a main rod (31), an extension rod (32), and a pin (2); The main rod (31) has a groove at its end, and a pin hole is provided on the side of the groove; the extension rod (32) is installed in the groove, and the side of the extension rod (32) is fixedly connected to the pin (2), and the pin (2) passes through the pin hole; so that the extension rod (32) is hinged to the main rod (31).

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