Manual return mechanism of electric laparoscopic stapler

Abstract

The utility model discloses a manual knife return mechanism of an electric laparoscopic stapler, including a motor arranged in a housing, the output end of the motor meshing with a transmission gear, the transmission gear meshing with a rack, a threaded column above the transmission gear, the threaded column extending above the housing, the threaded column being threadedly connected to a wrench to manually reset the rack. In the above manner, the manual knife return mechanism of the electric laparoscopic stapler of the utility model can avoid the risk of the instrument not returning the knife in the event of a power failure or other emergency situations by manually resetting the rack, the operation is simple and convenient, and the surgical risk is reduced.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a manual knife return mechanism of an electric laparoscope stapler. Background Art

[0002] Laparoscopic surgery is a minimally invasive surgical technique that uses modern imaging technology and high-tech surgical instruments to complete complex chest / abdominal operations through chest / abdominal wall cannulas or tiny incisions. To complete a laparoscopic surgery, only 1-3 1.5 cm chest / abdominal wall holes are needed. During the operation, an electric laparoscopic stapler is inserted through the chest / abdominal wall hole to complete the operation.

[0003] When the attending physician performs treatment, the instrument is powered by the motor to drive the rack forward or backward to complete the operation. If the instrument loses power or other emergency situations occur during the process and the rack cannot move, the rack needs to be quickly reset manually. Therefore, it is necessary to design a structure that can manually reset the rack. Summary of the invention

[0004] The main technical problem solved by the utility model is to provide a manual knife return mechanism for an electric laparoscopic stapler, which can avoid the risk of the instrument not returning the knife in power failure or other emergency situations by manually resetting the rack. The operation is simple and convenient, and the surgical risk is reduced.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a manual knife return mechanism of an electric laparoscopic stapler, including a motor arranged in a casing, the output end of the motor is engaged with a transmission gear, the transmission gear is engaged with a rack, and a threaded column is provided above the transmission gear, the threaded column extends out of the casing, and the threaded column is threadedly connected to a wrench to manually reset the rack.

[0006] In a preferred embodiment of the present invention, the lower end of the wrench has a threaded hole that cooperates with the threaded column.

[0007] In a preferred embodiment of the present invention, the wrench is a T-shaped wrench.

[0008] In a preferred embodiment of the present utility model, the transmission gear is installed in the cavity of the casing through a gear pin, and a limiting plate is installed above the transmission gear.

[0009] In a preferred embodiment of the present invention, a fixing plate is provided above the cavity of the housing, and the upper end of the threaded column passes through the fixing plate and extends out of the housing.

[0010] The beneficial effects of the utility model are as follows: the manual knife return mechanism of the electric laparoscopic stapler of the utility model realizes manual rotation of the wrench to drive the rack to reset through the cooperation of the wrench and the threaded column of the transmission gear. The installation is convenient and the operation is simple, and the knife return function can be realized quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0012] Figure 1 It is a structural schematic diagram of a preferred embodiment of the manual knife return mechanism of the electric laparoscopic stapler of the utility model;

[0013] Figure 2 yes Figure 1 Exploded diagram of

[0014] Figure 3 is a cross-sectional view of a wrench;

[0015] Figure 4 It is a structural diagram of the transmission gear;

[0016] The markings of the components in the accompanying drawings are as follows: 1, housing, 2, motor, 3, transmission gear, 4, rack, 41, threaded column, 5, limit plate, 6, fixing plate, 7, wrench, 71, threaded hole. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiment of the utility model will be described clearly and completely below. The structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions that can be implemented in the utility model, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that can be produced by the utility model and the purpose that can be achieved, should still fall within the scope of the technical content disclosed in the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of narration, and are not used to limit the scope that can be implemented. The change or adjustment of its relative relationship should also be regarded as the scope that can be implemented in the utility model without substantially changing the technical content.

[0018] See also Figures 1 to 3A manual knife return mechanism of an electric laparoscopic stapler includes a motor 2 arranged in a housing 1, a transmission gear 3 is meshed at the output end of the motor 2, and the transmission gear 3 is meshed with a rack 4. The transmission gear 3 is installed in the cavity of the housing 1 through a gear pin, and a limit plate 5 is installed above the transmission gear 3, and the limit plate 5 is connected to the cavity of the housing 1 through a screw.

[0019] The front end of the transmission gear 3 is connected to the firing mechanism, which is a conventional structure of the existing laparoscopic stapler. The motor 2, the transmission gear 3 and the rack 4 are meshed in sequence, so that the motor 2 drives the rack 4 forward and backward. Other components of the electric laparoscopic stapler are not shown, and can be referred to the prior art or the patent CN217390791U previously applied for by the applicant.

[0020] A threaded column 31 is provided above the transmission gear 3, and the threaded column 31 extends out of the casing 1. A fixing plate 6 is provided above the cavity of the casing 1. The upper end of the threaded column 31 passes through the fixing plate 6 and extends out of the casing 1, and the fixing plate 6 is installed on the casing 1 by screws. The threaded column 31 is threadedly connected to the wrench 7 to manually reset the rack 4. The lower end of the wrench 7 has a threaded hole 71 that cooperates with the threaded column 31. The wrench 7 is a T-type wrench. When the electric laparoscopic stapler is powered off or the motor 2 fails and the rack 4 cannot be reset, align the T-type wrench and install it on the threaded column 31. As long as the T-type wrench is turned, the transmission rack 4 is driven to rotate through the threaded column 31, thereby driving the rack 4 to reset and completing the knife return action.

[0021] Different from the prior art, the manual knife return mechanism of the electric laparoscopic stapler of the utility model can avoid the risk of the instrument not returning the knife in power failure or other emergency situations by manually resetting the rack. The operation is simple and convenient, and the surgical risk is reduced.

[0022] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A manual knife return mechanism of an electric laparoscopic stapler, comprising a motor arranged in a housing, wherein an output end of the motor is meshed with a transmission gear, and the transmission gear is meshed with a rack, wherein: A threaded column is provided above the transmission gear, and the threaded column extends out of the housing. The threaded column is threadedly connected to a wrench to manually reset the rack.

2. The manual knife return mechanism of the electric laparoscopic stapler according to claim 1, characterized in that: The lower end of the wrench is provided with a threaded hole matched with the threaded column.

3. The manual knife return mechanism of the electric laparoscopic stapler according to claim 2, characterized in that: The wrench is a T-shaped wrench.

4. The manual knife return mechanism of the electric laparoscopic stapler according to claim 1, characterized in that: The transmission gear is installed in the cavity of the casing through a gear pin, and a limiting plate is installed above the transmission gear.

5. The manual knife return mechanism of the electric laparoscopic stapler according to claim 4, characterized in that: A fixing plate is arranged above the cavity of the housing, and the upper end of the threaded column passes through the fixing plate and extends out of the housing.

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