Emergency retraction mechanism for an instrument

Abstract

The utility model discloses an instrument emergency retraction mechanism, comprising an instrument support assembly, a drive support assembly, a guide rail assembly and a compression spring: the instrument support assembly comprises an instrument support, a handle, a push-pull electromagnet and a swing arm; the instrument support is connected with the swing arm; one end of the swing arm is hook-shaped, and moves under the drive of the push-pull electromagnet, and can be locked and connected with the drive support assembly when it is in one extreme position, and separated from the drive support assembly when it is in the other extreme position; the handle is assembled and connected with the push-pull electromagnet, and is used to manually switch the opening and closing state of the push-pull electromagnet; the guide rail assembly comprises a guide rail, a drive support slider and an instrument support slider; the drive support slider and the instrument support slider are respectively assembled and connected with the guide rail; the drive support slider is fixedly connected to the drive support assembly; the instrument support slider is fixedly connected to the instrument support; beneficial effects: it has significant advantages in improving surgical safety, emergency handling efficiency and operational convenience.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to an emergency retraction mechanism for an instrument. Background Art

[0002] In the field of surgical instruments, emergency retraction mechanisms are an important part of surgical safety and efficiency. In traditional technologies, common retraction mechanisms usually rely on manually operated wrenches or similar tools to disengage the transmission system from the drive device. The main problem with this traditional method is that the response time of the retraction trigger is too long.

[0003] In an emergency, such as when an unexpected situation occurs during surgery and the surgical instrument needs to be quickly retracted, the operator needs to find and use relevant tools to disengage, which may consume valuable time and cause delays in the retraction action. In surgery, every second counts, so shortening the retraction trigger response time is crucial to improving surgical safety.

[0004] Although there are some designs that consider the emergency retraction function in the prior art, these designs often still require manual intervention and may be inconvenient and delayed in operation. Therefore, there is an urgent need for a new mechanism or device that can quickly and reliably achieve emergency retraction of instruments in an emergency situation to improve surgical safety and efficiency. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an apparatus emergency retraction mechanism.

[0006] The utility model is realized through the following technical solutions:

[0007] An instrument emergency retraction mechanism comprises an instrument support assembly, a drive support assembly, a guide rail assembly and a compression spring: the instrument support assembly comprises an instrument support, a handle, a push-pull electromagnet and a swing arm;

[0008] The above-mentioned instrument bracket is a component used for movably connecting instruments;

[0009] The above-mentioned instrument bracket is connected with a swing arm; one end of the above-mentioned swing arm is hook-shaped, and moves under the drive of the push-pull electromagnet. When it is in one of the extreme positions, it can be locked and connected with the driving bracket assembly, and when it is in the other extreme position, it can be separated from the driving bracket assembly;

[0010] The handle is connected to the push-pull electromagnet and is used to manually switch the open and closed state of the push-pull electromagnet;

[0011] The guide rail assembly includes a guide rail, a drive support slider and an instrument support slider; the drive support slider and the instrument support slider are respectively assembled and connected to the guide rail; the drive support slider is fixedly connected to the drive support assembly; the instrument support slider is fixedly connected to the instrument support;

[0012] A compression spring is arranged between the instrument support assembly and the driving support assembly; when the swing arm is locked and connected with the driving support assembly, the compression spring is in a compressed state.

[0013] Furthermore, a circular hole is provided in the middle of the swing arm, and the circular hole is coaxially rotatably connected with the swing arm shaft; the swing arm shaft is fixedly connected to the instrument bracket;

[0014] One end of the swing arm is hook-shaped, and the other end is provided with a waist hole; the outer side of the hook-shaped part of the swing arm is an inclined surface, and the inner side is an arc surface; the swing arm is connected with the push-pull electromagnet through the waist hole.

[0015] Furthermore, a spring guide shaft is provided on the instrument support assembly, and the central axis of the spring guide shaft is arranged parallel to the sliding direction of the guide rail; the spring guide shaft is inserted into the compression spring.

[0016] Furthermore, a limiting portion is provided on the above-mentioned instrument bracket, and when the above-mentioned swing arm and the driving bracket assembly are completely separated, the limiting portion and the driving bracket assembly are in contact with each other, and there is an interaction force to prevent the two from generating relative movement;

[0017] The instrument support is provided with a plunger, and when the swing arm is completely separated from the driving support assembly, the plunger is inserted into the driving support assembly.

[0018] Furthermore, a cam follower is provided on the main body of the driving bracket assembly; the cam follower is a flat-head nail-shaped protrusion, and when the swing arm is locked and connected to the driving bracket assembly, the hook-shaped end of the swing arm is temporarily fixedly connected to the cam follower.

[0019] Furthermore, a spring guide cylinder is provided on the main body of the driving bracket assembly; the spring guide cylinder is sleeved on the outside of the compression spring and is coaxially arranged with the compression spring and the spring guide shaft.

[0020] Furthermore, a plunger hole and a limiting surface are provided on the main body of the driving bracket assembly; the plunger hole is cooperatively connected with the plunger; and the limiting surface is cooperatively connected with the limiting portion.

[0021] Furthermore, the main body of the driving bracket assembly is the driving bracket; the driving bracket is a component used to fix and connect the device.

[0022] The beneficial effects of the utility model are:

[0023] Quick response: Compared with the traditional manual operation method, the utility model adopts push-pull electromagnets and other components, which can achieve quick triggering and response in emergency situations, greatly shorten the emergency retreat time of the instrument, and improve the efficiency of emergency handling in surgery.

[0024] Convenient operation: The utility model has a reasonable design and is simple and convenient to operate. In an emergency, the operator only needs to trigger the emergency retraction of the device through a handle or an electromagnet, etc., without having to find and use additional tools, which greatly reduces the complexity of the operation.

[0025] Safe and reliable: The design of the utility model takes into account the safety and reliability of the operation, and adopts structures such as cam followers and limit components to ensure the stability and accuracy of the instrument during emergency retraction, effectively reducing the possibility of accidents caused by operational errors.

[0026] Wide applicability: The emergency retraction mechanism of the utility model is suitable for various surgical instruments, such as electric laparoscopic staplers, etc. It has a flexible design and can be adjusted and optimized according to the characteristics of different surgical instruments, and has strong versatility and applicability.

[0027] In summary, the instrument emergency retraction mechanism of the utility model has significant advantages in improving surgical safety, emergency handling efficiency and operational convenience, and is of great significance for improving surgical quality and ensuring patient safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 : A schematic diagram of the three-dimensional structure of the utility model when locked;

[0029] Figure 2 : A schematic diagram of the three-dimensional structure of the utility model when separated;

[0030] Figure 3 : A three-dimensional structural diagram of the instrument support assembly and the guide rail assembly of the utility model;

[0031] Figure 4 : A three-dimensional structural diagram of the drive bracket assembly and the guide rail assembly of the utility model;

[0032] Figure 5 : A schematic diagram of the three-dimensional structure of the driving bracket of the utility model;

[0033] Figure 6 : A three-dimensional structural diagram of the swing arm of the utility model;

[0034] In the figure: 1-instrument support assembly, 2-drive support assembly, 3-guide rail assembly, 4-compression spring, 11-instrument support, 12-handle, 13-push-pull electromagnet, 14-swing arm, 15-plunger, 16-swing arm shaft, 17-spring guide shaft, 111-limiting part, 141-waist hole, 142-arc surface, 143-inclined surface, 144-round hole, 21-drive support, 22-cam follower, 23-spring guide cylinder, 212-plunger hole, 213-limiting surface, 31-guide rail, 32-drive support slider, 33-instrument support slider. DETAILED DESCRIPTION

[0035] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0036] Example: Figure 1-6 As shown, an instrument emergency retraction mechanism comprises an instrument support assembly 1, a drive support assembly 2, a guide rail assembly 3 and a compression spring 4: the instrument support assembly 1 comprises an instrument support 11, a handle 12, a push-pull electromagnet 13 and a swing arm 14; the instrument support 11 is a component for movably connecting the instrument; the swing arm 14 is connected to the instrument support 11; one end of the swing arm 14 is hook-shaped, and moves under the drive of the push-pull electromagnet 13, and can be locked and connected with the drive support assembly 2 when it is in one extreme position, and separated from the drive support assembly 2 when it is in the other extreme position; the handle 1 2 is assembled and connected with the push-pull electromagnet 13, and is used for manually switching the opening and closing state of the push-pull electromagnet 13; the guide rail assembly 3 includes a guide rail 31, a driving support slider 32 and an instrument support slider 33; the driving support slider 32 and the instrument support slider 33 are respectively assembled and connected with the guide rail 31; the driving support slider 32 is fixedly connected with the driving support assembly 2; the instrument support slider 33 is fixedly connected with the instrument support 11; a compression spring 4 is arranged between the instrument support assembly 1 and the driving support assembly 2; when the swing arm 14 is locked and connected with the driving support assembly 2, the compression spring 4 is in a compressed state.

[0037] Among them: a circular hole 144 is provided in the middle position of the swing arm 14, and the circular hole 144 is coaxially rotatably assembled and connected with the swing arm shaft 16; the swing arm shaft 16 is fixedly connected to the instrument bracket 11; one end of the swing arm 14 is hook-shaped, and the other end is provided with a waist hole 141; the outer side of the hook-shaped part of the swing arm 14 is an inclined surface 143, and the inner side is an arc surface 142; the swing arm 14 is connected to the push-pull electromagnet 13 through the waist hole 141.

[0038] Wherein: a spring guide shaft 17 is arranged on the instrument support assembly 1 , and the central axis of the spring guide shaft 17 is arranged parallel to the sliding direction of the guide rail 31 ; the spring guide shaft 17 is inserted into the compression spring 4 .

[0039] Among them: a limiting portion 111 is provided on the instrument bracket 11, and when the swing arm 14 is completely separated from the driving bracket assembly 2, the limiting portion 111 and the driving bracket assembly 2 are in contact with each other, and there is an interaction force to prevent the two from making relative movement; a plunger 15 is provided on the instrument bracket 11, and when the swing arm 14 is completely separated from the driving bracket assembly 2, the plunger 15 is inserted into the driving bracket assembly 2.

[0040] Wherein: a cam follower 22 is arranged on the main body of the driving bracket assembly 2; the cam follower 22 is a flat nail-shaped protrusion, and when the swing arm 14 is locked and connected with the driving bracket assembly 2, the hook-shaped end of the swing arm 14 is temporarily fixedly connected with the cam follower 22. A spring guide cylinder 23 is arranged on the main body of the driving bracket assembly 2; the spring guide cylinder 23 is sleeved on the outside of the compression spring 4, and is coaxially arranged with the compression spring 4 and the spring guide shaft 17. A plunger hole 212 and a limiting surface 213 are arranged on the main body of the driving bracket assembly 2; the plunger hole 212 is connected with the plunger 15; the limiting surface 213 is connected with the limiting portion 111. The main body of the driving bracket assembly 2 is the driving bracket 21; the driving bracket 21 is a component used for fixing and connecting the device.

[0041] In summary, an instrument emergency retraction mechanism includes an instrument support assembly 1, a drive support assembly 2, a guide rail assembly 3 and a compression spring 4, the instrument support assembly 1 includes an instrument support 11, a handle 12, a push-pull electromagnet 13, a swing arm 14, a plunger 15, a swing arm shaft 16 and a spring guide shaft 17; the drive support assembly 2 includes a drive support 21, a cam follower 22 and a spring guide cylinder 23; the guide rail assembly 3 includes a guide rail 31, a drive support slider 32 and an instrument support slider 33.

[0042] The swing arm 14 is mounted on the instrument bracket 11 through the circular hole 144 thereon in cooperation with the swing arm shaft 16, the handle 12 is mounted on the instrument bracket 11 through the push-pull electromagnet 13, and the waist hole 141 on the swing arm 14 is connected to the push-pull electromagnet 13, so that the push-pull electromagnet 13 will drive the swing arm 14 to rotate around the swing arm shaft 16 when the power is turned on and off.

[0043] The compression spring 4 is installed between the spring guide shaft 17 on the instrument support assembly 1 and the spring guide cylinder 23 on the drive support assembly 2. When the push-pull electromagnet 13 is not energized, the swing arm 14 on the instrument support assembly 1 pulls the cam follower 22 installed on the drive support assembly 2, so that the drive support assembly 2 installed on the drive support slider 32 and the instrument support assembly 1 installed on the instrument support slider 33 become a whole and can slide back and forth on the guide rail 31.

[0044] When emergency retreat is required, the control system energizes the push-pull electromagnet 13 to attract, and the push-pull electromagnet 13 drives the swing arm 14 to rotate around the swing arm shaft 16, and the swing arm 14 is disengaged from the cam follower 22. Under the action of the compression spring 4, the instrument support assembly 1 moves backward along the guide rail 31 along with the instrument support slider 33. When the plunger 15 installed on the instrument support 11 enters the plunger hole 212 on the drive support 21, and at the same time, the limit surface 213 on the drive support 21 contacts the limit portion 111 on the instrument support 11, the instrument installed on the instrument support assembly 1 completes the emergency retreat action.

[0045] When the push-pull electromagnet 13 fails, the emergency retraction of the instrument can be completed by operating the handle 12 installed thereon.

[0046] After the emergency retreat is completed, the push-pull electromagnet 13 is powered off and reset, and the driving support assembly 2 or the instrument support assembly 1 is driven by external force, so that the driving support assembly 2 and the instrument support assembly 1 are close to each other, and the inclined surface 143 on the swing arm 14 contacts the cam follower 22, guiding the swing arm 14 to rotate around the swing arm shaft 16, so that the arc surface 142 on the swing arm 14 pulls the cam follower 22 to complete the reset.

[0047] The above-mentioned instruments are surgical instruments that require a retraction function, such as an electric laparoscopic stapler.

[0048] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An instrument emergency retraction mechanism, comprising an instrument support assembly (1), a drive support assembly (2), a guide rail assembly (3) and a compression spring (4), characterized in that: The instrument support assembly (1) comprises an instrument support (11), a handle (12), a push-pull electromagnet (13) and a swing arm (14); The device support (11) is a component used for movably connecting the device; The instrument support (11) is connected to a swing arm (14); one end of the swing arm (14) is hook-shaped and moves under the drive of the push-pull electromagnet (13). When it is in one of the extreme positions, it can be locked and connected with the driving support assembly (2), and when it is in the other extreme position, it can be separated from the driving support assembly (2); The handle (12) is connected to the push-pull electromagnet (13) and is used to manually switch the open and closed state of the push-pull electromagnet (13); The guide rail assembly (3) comprises a guide rail (31), a driving support slider (32) and an instrument support slider (33); the driving support slider (32) and the instrument support slider (33) are respectively assembled and connected to the guide rail (31); the driving support slider (32) is fixedly connected to the driving support assembly (2); and the instrument support slider (33) is fixedly connected to the instrument support (11); A compression spring (4) is arranged between the instrument support assembly (1) and the drive support assembly (2); when the swing arm (14) is locked and connected with the drive support assembly (2), the compression spring (4) is in a compressed state.

2. An emergency retraction mechanism for an apparatus as claimed in claim 1, characterized in that: A circular hole (144) is provided in the middle of the swing arm (14), and the circular hole (144) is coaxially rotatably connected to the swing arm shaft (16); the swing arm shaft (16) is fixedly connected to the instrument bracket (11); One end of the swing arm (14) is hook-shaped, and the other end is provided with a waist hole (141); the outer side of the hook-shaped part of the swing arm (14) is an inclined surface (143), and the inner side is an arc surface (142); the swing arm (14) is connected to the push-pull electromagnet (13) through the waist hole (141).

3. The device emergency retraction mechanism according to claim 1, characterized in that: The instrument support assembly (1) is provided with a spring guide shaft (17), the central axis of the spring guide shaft (17) is arranged parallel to the sliding direction of the guide rail (31); the spring guide shaft (17) is inserted into the compression spring (4).

4. The device emergency retraction mechanism according to claim 1, characterized in that: A limiting portion (111) is provided on the instrument support (11), and when the swing arm (14) and the driving support assembly (2) are completely separated, the limiting portion (111) and the driving support assembly (2) are in contact with each other, and an interaction force exists to prevent the two from generating relative movement; The instrument support (11) is provided with a plunger (15), and when the swing arm (14) and the drive support assembly (2) are completely separated, the plunger (15) is inserted into the drive support assembly (2).

5. The device emergency retraction mechanism according to claim 2, characterized in that: A cam follower (22) is provided on the main body of the driving bracket assembly (2); the cam follower (22) is a flat-head nail-shaped protrusion, and when the swing arm (14) is locked and connected with the driving bracket assembly (2), the hook-shaped end of the swing arm (14) is temporarily fixedly connected with the cam follower (22).

6. An apparatus emergency retraction mechanism as claimed in claim 3, characterized in that: A spring guide cylinder (23) is provided on the main body of the driving bracket assembly (2); the spring guide cylinder (23) is sleeved on the outside of the compression spring (4) and is coaxially arranged with the compression spring (4) and the spring guide shaft (17).

7. An apparatus emergency retraction mechanism as claimed in claim 4, characterized in that: A plunger hole (212) and a limiting surface (213) are provided on the main body of the driving bracket assembly (2); the plunger hole (212) is cooperatively connected with the plunger (15); and the limiting surface (213) is cooperatively connected with the limiting portion (111).

8. An emergency retraction mechanism for an apparatus as claimed in any one of claims 1 to 7, characterized in that: The main body of the driving bracket assembly (2) is a driving bracket (21); the driving bracket (21) is a component used for fixing and connecting equipment.

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