Medical device

Abstract

The utility model discloses medical equipment which comprises a base, a stand column, a shoulder joint, a cantilever, a supporting leg and a first folding mechanism, and the first folding mechanism comprises a folding upper support, a folding lower support, a folding rotating shaft, a deflector rod assembly, a deflector rod rotating shaft, a folding limiting shaft, a first folding limiting groove, a second folding limiting groove and a tension spring. One end of the folding upper support is connected with the shoulder joint, and one end of the folding lower support is connected with the stand column. The folding rotating shaft is connected with the other ends of the folding upper support and the folding lower support; the end face of the lower folding support is provided with the first folding limiting groove and the second folding limiting groove. The folding limiting shaft is limited in the first folding limiting groove and penetrates through the folding upper support and the deflector rod assembly; the tension spring is connected with the folding rotating shaft and the folding limiting shaft; the deflector rod rotating shaft is arranged between the deflector rod assembly and the folding upper support in a penetrating mode. The medical equipment can be conveniently folded, and is convenient to store and transport after being folded.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a medical device. Background Art

[0002] Existing medical devices are not convenient to package and transport due to their large size. For example, a gesture controller for controlling a capsule endoscope, such as Figure 1 As shown, it is composed of a base 1, a column 2, a shoulder joint 3, a cantilever 4, an elbow joint 5, a wrist joint 6, an R1 axis 7, an R2 axis 8, a magnetic head assembly 9, a leg 10 and a caster 11 at the end of the leg. The base 1 forms a disc-shaped bracket with a diameter of about 0.8m; the column 2 is composed of a main column 21, an upper column 22 and a lifting column 23. The main column 21 is installed in the middle of the base 1, and the lifting column 23 can be raised and lowered along the center of the main column. When the lifting column 23 is lowered to the lowest position, the total height of the column is 1.3 m; the cantilever 4 includes a horizontal cantilever 401 and a lifting cantilever 402, the horizontal cantilever 401 is connected to the top of the upper column 22 through a shoulder joint 3, and the horizontal cantilever 401 can rotate in the horizontal direction along the shoulder joint 3; the lifting cantilever 402 is connected to the horizontal cantilever 401 through an elbow joint 5, and the lifting cantilever 402 can rotate in the horizontal direction and in the vertical direction along the elbow joint 5; the magnetic head assembly 9 is connected to the end of the lifting cantilever 402 through a wrist joint 6, and the magnetic head assembly 9 can rotate freely along the R1 axis 7 and the R2 axis 8. The entire arm length of the posture controller is about 1 meter, and the cantilever 4 and the column 2 are set in an L shape.

[0003] The above-mentioned attitude controller has a large overall volume and is not convenient for packaging and transportation. The base 1, column 2, and cantilever 4 must be disassembled for packaging and transportation. When transported to the destination, they must be reassembled. Repeated disassembly and assembly can easily damage parts, and the disassembly and assembly process is quite complicated and time-consuming. Utility Model Content

[0004] In order to solve at least one of the above-mentioned technical problems existing in the prior art, the utility model provides a medical device, aiming to realize the folding and storage of the medical device.

[0005] The utility model embodiment provides a medical device, including a base, a column, a shoulder joint, a cantilever, an elbow joint, a wrist joint, an R1 axis, an R2 axis, a magnetic head assembly, a leg and a caster, and also includes a first folding mechanism, the first folding mechanism includes a folding upper support, a folding lower support, a folding shaft, a lever assembly, a lever shaft, a folding limit shaft, a first folding limit groove, a second folding limit groove and a tension spring, one end of the folding upper support is fixedly connected to the shoulder joint, and one end of the folding lower support is fixedly connected to the column;

[0006] The other end of the folding upper support and the other end of the folding lower support are connected via the folding shaft;

[0007] The first folding limit groove and the second folding limit groove are respectively arranged on the end surface of the folding lower support; the folding limit shaft is limited in the first folding limit groove and passes through the folding upper support and the lever assembly;

[0008] The tension spring connects the folding rotating shaft and the end of the folding limiting shaft, so that under the action of the tension spring, the folding limiting shaft is always limited by the first folding limiting groove;

[0009] The lever shaft is disposed between the lever assembly and the folding upper support.

[0010] In some embodiments, the lever assembly includes a lever, a lever locking shaft, a locking shaft slider, and a spring;

[0011] The lever is U-shaped, including a slider guide groove, a spring hole, a locking shaft guide hole, a first lever shaft hole, and a first folding limit shaft hole. The first folding limit shaft hole is a waist-shaped hole, and the folding limit shaft can slide left and right in the first folding limit shaft hole.

[0012] The lever locking shaft is provided with a limit post, a locking shaft body and a spring guide post, and a positioning hole is provided in the middle of the locking shaft body;

[0013] The locking shaft slider is provided with a toggle block, a guide block and a positioning column. The positioning column of the locking shaft slider is fixedly connected to the positioning hole in the middle of the locking shaft body. The spring is sleeved on the spring guide column of the toggle rod locking shaft. The toggle rod locking shaft is assembled into the toggle rod along the slider guide groove.

[0014] In some embodiments, the folding lower support is provided with a first folding axis hole, and an arc surface is provided between the first folding limit groove and the second folding limit groove, and the arc surface is concentric with the first folding axis hole.

[0015] In some embodiments, the folding upper support is provided with a locking shaft limit hole, a second folding shaft hole, a second folding limit shaft hole and a second lever shaft hole, wherein the second folding limit shaft hole is a waist-shaped hole, and the folding limit shaft can slide up and down in the waist-shaped hole.

[0016] In some embodiments, the lever shaft passes through the first lever shaft hole and the second lever shaft hole, so that the lever assembly is limited by the folding upper support, and the lever rotates in the second lever shaft hole through the lever shaft, and the elastic force of the spring causes the limiting column of the lever locking shaft to be limited by the limiting hole of the locking shaft.

[0017] In some embodiments, the folding limit shaft passes through the first folding limit shaft hole and the second folding limit shaft hole, and the retaining spring is installed in the retaining groove of the folding limit shaft to limit the folding limit shaft in the lever to prevent the folding limit shaft from axially moving.

[0018] In some embodiments, both ends of the folding limit axis are inserted into the first folding limit groove of the folding lower support, and the folding shaft passes through the first folding shaft hole and the second folding shaft hole, so that the folding upper support and the folding lower support are connected through the folding shaft, and the folding upper support can rotate along the folding shaft.

[0019] In some embodiments, a second folding mechanism is further included, the second folding mechanism comprising: a front leg, a rear leg, a folding shaft, a lever assembly, a lever shaft, a folding limit shaft, a first folding limit groove, a second folding limit groove and a tension spring, one end of the front leg is fixedly connected to the base, and one end of the rear leg is connected to the leg;

[0020] The other end of the front leg and the other end of the rear leg are connected via the folding shaft;

[0021] The first folding limit groove and the second folding limit groove are respectively arranged on the end surface of the rear supporting leg;

[0022] The folding limit shaft is limited in the first folding limit groove and passes through the front supporting leg and the lever assembly;

[0023] The tension spring connects the folding rotating shaft and the end of the folding limiting shaft, so that under the action of the tension spring, the folding limiting shaft is always limited by the first folding limiting groove;

[0024] The lever shaft is disposed between the lever assembly and the front leg.

[0025] An embodiment of the utility model provides a medical device, under the action of external force, the lever assembly rotates around the lever shaft, driving the folding limit shaft to disengage from the first folding limit groove, under the action of external force, the folding upper support rotates around the folding shaft, the folding limit shaft slides from the first folding limit groove to the second folding limit groove and is limited by the second folding limit groove, the folding upper support closes in the direction of the folding lower support, and at the same time drives the shoulder joint to close in the direction of the column, so that the horizontal part of the posture controller, including the cantilever, elbow joint, wrist joint, R1 axis, R2 axis, and magnetic head assembly, moves closer to the column, thereby realizing folding, the first folding mechanism has a simple structure and convenient folding operation, and can realize convenient folding of the medical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the embodiments of the present utility model and constitute a part of the specification. Together with the following specific implementation methods, they are used to explain the embodiments of the present utility model, but do not constitute a limitation on the embodiments of the present utility model.

[0027] In the attached picture:

[0028] Figure 1 It is a structural schematic diagram of a posture controller for controlling a capsule endoscope in the prior art of the utility model;

[0029] Figure 2 A schematic diagram of the structure of a posture controller for controlling a capsule endoscope provided in an embodiment of the utility model;

[0030] Figure 3 A schematic structural diagram of a first folding mechanism of a posture controller for controlling a capsule endoscope provided in an embodiment of the utility model;

[0031] Figure 4 A cross-sectional view of a first folding mechanism of a posture controller for controlling a capsule endoscope provided in an embodiment of the utility model;

[0032] Figure 5 A schematic structural diagram of a lever of a first folding mechanism provided in an embodiment of the utility model;

[0033] Figure 6 A schematic diagram of the structure of a locking shaft slider of a first folding mechanism provided in an embodiment of the utility model;

[0034] Figure 7 A schematic structural diagram of a lever locking shaft of a first folding mechanism provided in an embodiment of the utility model;

[0035] Figure 8 A schematic diagram of the structure of the folding lower support of the first folding mechanism provided in an embodiment of the utility model;

[0036] Fig. 9 A schematic diagram of the structure of the folding upper support of the first folding mechanism provided in an embodiment of the utility model;

[0037] Fig.10 Another cross-sectional view of a first folding mechanism of a posture controller for controlling a capsule endoscope provided by an embodiment of the utility model;

[0038] Fig.11 A schematic structural diagram of a second folding mechanism of a posture controller for controlling a capsule endoscope provided in an embodiment of the utility model;

[0039] Fig.12A schematic structural diagram of another posture controller for controlling a capsule endoscope provided in an embodiment of the utility model;

[0040] Fig.13 This is a state diagram of another posture controller for controlling a capsule endoscope provided in an embodiment of the utility model after folding.

[0041] Description of reference numerals:

[0042] Base 1, column 2, shoulder joint 3, cantilever 4, horizontal cantilever 401, elbow joint 5, lifting cantilever 402, wrist joint 6, R1 axis 7, R2 axis 8, magnetic head assembly 9, leg 10, caster 11, main column 21, upper column 22, lifting column 23, first folding mechanism 12, folding upper support 01, folding lower support 02, folding shaft 03, lever assembly 04, lever shaft 05, folding limit shaft 06, first folding limit slot 07, second folding limit slot 08 and tension spring 09, arc surface 10,

[0043] Lever 0401, lever locking shaft 0402, locking shaft slider 0403, spring 0404,

[0044] Slider guide groove 04011, spring hole 04012, locking shaft guide hole 04013, first lever shaft hole 04014, first folding limit shaft hole 04015,

[0045] Limiting column 04021, locking shaft body 04022 and spring guide column 04023, positioning hole 040221, toggle block 04031, guide block 04032 and positioning column 04033,

[0046] The first folding shaft hole 0201,

[0047] The locking shaft limiting hole 0101, the second folding shaft hole 0102, the second folding limiting shaft hole 0103 and the second lever shaft hole 0104,

[0048] Circlip 0601,

[0049] The second folding mechanism 13 , the front supporting leg 001 , and the rear supporting leg 002 . DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0051] like Figure 2 , 3As shown, an embodiment of the utility model provides a medical device, including: a base 1, a column 2, a shoulder joint 3, a cantilever 4, an elbow joint 5, a wrist joint 6, an R1 axis 7, an R2 axis 8, a magnetic head assembly 9, a leg 10, a caster 11 and a first folding mechanism 12, wherein the first folding mechanism 12 includes a folding upper support 01, a folding lower support 02, a folding shaft 03, a lever assembly 04, a lever shaft 05, a folding limit shaft 06, a first folding limit groove 07, a second folding limit groove 08 and a tension spring 09; one end of the folding upper support 01 is fixedly connected to the shoulder joint 3, and one end of the folding lower support 02 is fixedly connected to the column 2; the folding upper support The other end of 01 and the other end of the folding lower support 02 are connected through the folding shaft 03; the first folding limit groove 07 and the second folding limit groove 08 are respectively arranged on the end surface of the folding lower support 02; the folding limit shaft 06 is limited in the first folding limit groove 07 and passes through the folding upper support 01 and the lever assembly 04; the tension spring 09 connects the folding shaft 03 and the end of the folding limit shaft 06, so that under the action of the tension spring 09, the folding limit shaft 06 is always limited by the first folding limit groove 07; the lever shaft 05 is passed between the lever assembly 04 and the folding upper support 01.

[0052] Specifically, the medical device takes a posture controller for controlling a capsule endoscope as an example. In order to realize the folding of the cantilever 4 of the posture controller, a first folding mechanism 12 is added at the connection between the column 2 and the shoulder joint 3. The column 2 is composed of a main column 21, an upper column 22 and a lifting column 23. The shoulder joint 3 is fixedly connected to the cantilever 4. The first folding mechanism 12 includes a folding upper support 01, a folding lower support 02, a folding shaft 03, a lever assembly 04, a lever shaft 05, a folding limit shaft 06, a first folding limit groove 07, a second folding limit groove 08 and a tension spring 09; one end of the folding upper support 01 is fixedly connected to the shoulder joint 3, specifically by a screw; one end of the folding lower support 02 is fixedly connected to the upper column 22 of the column 2, specifically by a screw; the other end of the folding upper support 01 and the other end of the folding lower support 02 are connected via the folding shaft 03. The outer shape of the folded upper support 01 can be adapted to the shoulder joint 3 , and the outer shape of the folded lower support 02 can be adapted to the upper column 22 .

[0053] The folding upper support 01 and the folding lower support 02 are movably connected through the folding rotating shaft 03; the first folding limiting groove 07 and the second folding limiting groove 08 are respectively arranged on the end surface of the folding lower support 02. In the initial state, the folding limiting shaft 06 is limited in the first folding limiting groove 07. When the folding limiting shaft 06 escapes from the first folding limiting groove 07 and slides along the end surface of the folding lower support 02 into the second folding limiting groove 08, the folding upper support 01 is driven to rotate around the folding rotating shaft 03. The folding shaft 03 rotates, and the folding upper support 01 rotates to drive the shoulder joint 3 to close toward the column 2, thereby realizing the horizontal part of the posture controller, including the cantilever 4, elbow joint 5, wrist joint 6, R1 axis 7, R2 axis 8, and head assembly 9 to move closer to the column 2, thereby realizing the folding of the horizontal part of the posture controller; the tension spring 09 connects the folding shaft 03 and the end of the folding limit shaft 06. In the initial state, under the action of the tension spring 09, the folding limit shaft 06 is always limited by the first folding limit groove 07.

[0054] The lever assembly 04 is used to make the folding limit shaft 06 disengage from the first folding limit groove 07. Specifically, when the lever assembly 04 is pulled outward and lifted upward at the same time, the folding limit shaft 06 is driven to move upward, thereby disengaging from the first folding limit groove 07. At this time, the folding upper support 01 is rotated with force, and the folding upper support 01 rotates around the folding shaft 03. The lever assembly 04 rotates around the lever shaft 05. At the same time, the folding limit shaft 06 slides on the end surface of the folding lower support 02. When it is rotated to a certain angle, the folding limit shaft 06 is limited by the second folding limit groove 08. At this time, the lever assembly 04 is released, and the lever assembly 04 is reset under the action of the tension spring 09, thereby achieving folding.

[0055] The embodiment of the utility model provides a medical device. Under the action of external force, the lever assembly 04 rotates around the lever shaft 05, driving the folding limit shaft 06 to disengage from the first folding limit groove 07. Under the action of external force, the folding upper support 01 rotates around the folding shaft 03, and the folding limit shaft 06 slides from the first folding limit groove 07 to the second folding limit groove 08 and is limited by the second folding limit groove 08. The folding upper support 01 closes in the direction of the folding lower support 02, and at the same time drives the shoulder joint 3 to close in the direction of the column 2, thereby realizing the horizontal part of the posture controller, including the cantilever 4, elbow joint 5, wrist joint 6, R1 axis 7, R2 axis 8, and head assembly 9, to move closer to the column 2, thereby realizing folding. The first folding mechanism 12 has a simple structure and is easy to fold, so that the medical device can be conveniently folded.

[0056] like Figure 4-7As shown, in some embodiments, the lever assembly 04 includes a lever 0401, a lever locking shaft 0402, a locking shaft slider 0403 and a spring 0404; the lever 0401 is U-shaped, including a slider guide groove 04011, a spring hole 04012, a locking shaft guide hole 04013, a first lever shaft hole 04014, and a first folding limit shaft hole 04015, wherein the first folding limit shaft hole 04015 is a waist-shaped hole, and the folding limit shaft 06 can slide left and right in the first folding limit shaft hole 04015; the lever locking shaft 0402 is provided with a limiting column 04021, a locking shaft body 04022 and a spring guide column 04023, wherein the A positioning hole 040221 is provided in the middle of the locking shaft body 04022; the locking shaft slider 0403 is provided with a toggle block 04031, a guide block 04032 and a positioning column 04033, the positioning column 04033 of the locking shaft slider 0403 is fixedly connected to the positioning hole 040221 in the middle of the locking shaft body 04022, the spring 0404 is sleeved on the spring guide column 04023 of the lever locking shaft 0402, the lever locking shaft 0402 passes through the locking shaft guide hole 04013, and is assembled into the lever 0401 along the slider guide groove 04011, and the spring 0404 passes through the spring hole 04012. By pushing and pulling the toggle block 04031 with external force, the guide block 04032 of the locking shaft slider 0403 can slide in the slider guide groove 04011. At this time, the toggle lever locking shaft 0402 slides along the locking shaft guide hole 04013, thereby driving the folding limit shaft 06 to slide left and right in the first folding limit shaft hole 04015.

[0057] like Figure 8 As shown, in some embodiments, the folding lower support 02 is provided with a first folding axis hole 0201, an arc surface 10 is provided between the first folding limit groove 07 and the second folding limit groove 08, the arc surface 10 is concentric with the first folding axis hole 0201, and the folding axis 03 passes through the first folding axis hole 0201.

[0058] like Fig. 9 As shown, in some embodiments, the folding upper support 01 is provided with a locking shaft limit hole 0101, a second folding shaft hole 0102, a second folding limit shaft hole 0103 and a second lever shaft hole 0104, wherein the second folding limit shaft hole 0103 is a waist-shaped hole, and the folding limit shaft 06 can slide up and down in the waist-shaped hole.

[0059] Furthermore, the lever shaft 05 passes through the first lever shaft hole 04014 and the second lever shaft hole 0104, so that the lever assembly 04 is limited with the folding upper support 01, the lever 0401 rotates in the second lever shaft hole 0104 through the lever shaft 05, and the elastic force of the spring 0404 causes the limiting column 04021 of the lever locking shaft 0402 to be limited with the locking shaft limiting hole 0101. Fig.10 As shown, further, the folding limit shaft 06 passes through the first folding limit shaft hole 04015 and the second folding limit shaft hole 0103, and the retaining spring 0601 is installed in the retaining groove of the folding limit shaft 06, so that the folding limit shaft 06 is limited in the lever 0401 to prevent the folding limit shaft 06 from axially moving.

[0060] Further, both ends of the folding limit axis 06 are inserted into the first folding limit groove 07 of the folding lower support 02, and the folding shaft 03 passes through the first folding shaft hole 0201 and the second folding shaft hole 0102, so that the folding upper support 01 and the folding lower support 02 are connected through the folding shaft 03, and the folding upper support 01 can rotate along the folding shaft 03. The tension spring 09 connects the ends of the folding shaft 03 and the folding limit axis 06. In the initial state, under the action of the tension spring 09, the folding limit axis 06 is always limited by the first folding limit groove 07.

[0061] When the locking shaft slider 0403 is pulled outward by external force, the limiting column 04021 of the lever locking shaft 0402 is disengaged from the locking shaft limiting hole 0101, and the lever 0401 is pried upward by external force. At this time, the folding limiting shaft 06 is disengaged from the first folding limiting groove 07. At this time, the folding upper support 01 is rotated forcefully, and the folding upper support 01 rotates along the folding rotating shaft 03. At the same time, the folding limiting shaft 06 slides on the arc surface 10 of the folding lower support 02. When it is rotated to a certain angle, the folding limiting shaft 06 is limited by the second folding limiting groove 08. When the lever 0401 is released, the lever 0401 is reset under the action of the tension spring 09, and the limit column 04021 is limited by the locking shaft limit hole 0101 under the elastic force of the spring 0404, so that the folding upper support 01 and the folding lower support 02 are folded at a certain angle, and the rotation of the folding upper support 01 drives the shoulder joint 3 to close toward the column 2, thereby realizing the horizontal part of the posture controller, including the cantilever 4, the elbow joint 5, the wrist joint 6, the R1 axis 7, the R2 axis 8, and the head assembly 9 to move closer to the column 2, thereby realizing the folding of the horizontal part of the posture controller.

[0062] It is understandable that when the operator accidentally touches the lever 0401, or directly moves the lever 0401, the lever locking shaft 0402 is limited by the locking shaft limiting hole 0101, so the lever 0401 cannot be rotated and cannot be folded, thereby ensuring the safety and reliability of the first folding mechanism 12.

[0063] like Fig.11 , 12 As shown, in some embodiments, the medical device further includes a second folding mechanism 13, which includes: a front leg 001, a rear leg 002, a folding shaft 03, a lever assembly 04, a lever shaft 05 (not shown in the figure), a folding limit shaft 06, a first folding limit groove 07, a second folding limit groove 08 and a tension spring 09, one end of the front leg 001 is fixedly connected to the base 1, and one end of the rear leg 002 is connected to the leg 10; the other end of the front leg 001 and the other end of the rear leg 002 are connected to the folding The first folding limit groove 07 and the second folding limit groove 08 are respectively arranged on the end surface of the rear leg 002; the folding limit shaft 06 is limited in the first folding limit groove 07 and passes through the front leg 001 and the lever assembly 04; the tension spring 09 connects the folding rotating shaft 03 and the end of the folding limit shaft 06, so that the folding limit shaft 06 is always limited by the first folding limit groove 07 under the action of the tension spring 09; the lever rotating shaft 05 is passed between the lever assembly 04 and the front leg 001. Among them, the shape of the front leg 001 of the second folding mechanism 13 can match the shape of the base 1, and the shape of the rear leg 002 can match the shape of the leg 10, so as to facilitate the connection and fixation between them. The structural design and folding principle of the second folding mechanism 13 are consistent with those of the first folding mechanism 12. The front leg 001 corresponds to the folding upper support 01, and only the appearance is different. The rear leg 002 corresponds to the folding lower support 02, and only the appearance is different. Therefore, the specific structural design and how to achieve folding of the second folding mechanism 13 can refer to the first folding mechanism 12, and will not be repeated here. The second folding mechanism 13 can facilitate the folding of the legs of the posture controller toward the base, which is convenient for storage and transportation. Fig.13 The state diagram of the cantilever 4 and the legs 10 of the attitude controller after folding is shown. The attitude controller is easy to fold and can be easily stored in a box for transportation after folding.

[0064] The optional implementation modes of the embodiments of the utility model are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the utility model are not limited to the specific details in the above implementation modes. Within the technical concept of the embodiments of the utility model, the technical scheme of the embodiments of the utility model can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the embodiments of the utility model. It should also be noted that the various specific technical features described in the above specific implementation modes can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the embodiments of the utility model will not be further described in detail for various possible combinations.

[0065] In addition, various implementations of the embodiments of the present utility model can also be arbitrarily combined, as long as they do not violate the concept of the embodiments of the present utility model, they should also be regarded as the contents disclosed in the embodiments of the present utility model.

Claims

1. A medical device, comprising a base, a column, a shoulder joint, a cantilever, an elbow joint, a wrist joint, an R1 axis, an R2 axis, a magnetic head assembly, a leg and a caster, characterized in that: It also includes a first folding mechanism, which includes a folding upper support, a folding lower support, a folding shaft, a lever assembly, a lever shaft, a folding limit shaft, a first folding limit groove, a second folding limit groove and a tension spring, one end of the folding upper support is fixedly connected to the shoulder joint, and one end of the folding lower support is fixedly connected to the column; The other end of the folding upper support and the other end of the folding lower support are connected through the folding rotating shaft; the first folding limiting groove and the second folding limiting groove are respectively arranged on the end surface of the folding lower support; the folding limiting shaft is limited in the first folding limiting groove and passes through the folding upper support and the lever assembly; The tension spring connects the folding rotating shaft and the end of the folding limiting shaft, so that under the action of the tension spring, the folding limiting shaft is always limited by the first folding limiting groove; The lever shaft is disposed between the lever assembly and the folding upper support.

2. The medical device according to claim 1, characterized in that The lever assembly comprises a lever, a lever locking shaft, a locking shaft slider and a spring; The lever is U-shaped, including a slider guide groove, a spring hole, a locking shaft guide hole, a first lever shaft hole, and a first folding limit shaft hole. The first folding limit shaft hole is a waist-shaped hole, and the folding limit shaft can slide left and right in the first folding limit shaft hole. The lever locking shaft is provided with a limit post, a locking shaft body and a spring guide post, and a positioning hole is provided in the middle of the locking shaft body; The locking shaft slider is provided with a toggle block, a guide block and a positioning column. The positioning column of the locking shaft slider is fixedly connected to the positioning hole in the middle of the locking shaft body. The spring is sleeved on the spring guide column of the toggle rod locking shaft. The toggle rod locking shaft is assembled into the toggle rod along the slider guide groove.

3. The medical device according to claim 2, characterized in that The folding lower support is provided with a first folding shaft hole, and an arc surface is provided between the first folding limit groove and the second folding limit groove, and the arc surface is concentric with the first folding shaft hole.

4. The medical device according to claim 3, characterized in that The folding upper support is provided with a locking shaft limiting hole, a second folding shaft hole, a second folding limiting shaft hole and a second lever shaft hole, wherein the second folding limiting shaft hole is a waist-shaped hole, and the folding limiting shaft can slide up and down in the waist-shaped hole.

5. The medical device according to claim 4, characterized in that The lever shaft passes through the first lever shaft hole and the second lever shaft hole, so that the lever assembly is limited by the folding upper support, and the lever rotates in the second lever shaft hole through the lever shaft, and the elastic force of the spring causes the limiting column of the lever locking shaft to be limited by the locking shaft limiting hole.

6. The medical device according to claim 5, characterized in that The folding limit shaft passes through the first folding limit shaft hole and the second folding limit shaft hole, and the retaining spring is installed in the retaining groove of the folding limit shaft, so that the folding limit shaft is limited in the lever to prevent the folding limit shaft from axially moving.

7. The medical device according to claim 6, characterized in that The two ends of the folding limit shaft are inserted into the first folding limit groove of the folding lower support, and the folding shaft passes through the first folding shaft hole and the second folding shaft hole, so that the folding upper support and the folding lower support are connected through the folding shaft, and the folding upper support can rotate along the folding shaft.

8. The medical device according to claim 1, characterized in that It also includes a second folding mechanism, which includes: a front leg, a rear leg, a folding shaft, a lever assembly, a lever shaft, a folding limit shaft, a first folding limit groove, a second folding limit groove and a tension spring, one end of the front leg is fixedly connected to the base, and one end of the rear leg is connected to the leg; The other end of the front leg and the other end of the rear leg are connected via the folding shaft; The first folding limit groove and the second folding limit groove are respectively arranged on the end surface of the rear supporting leg; The folding limit shaft is limited in the first folding limit groove and passes through the front supporting leg and the lever assembly; The tension spring connects the folding rotating shaft and the end of the folding limiting shaft, so that under the action of the tension spring, the folding limiting shaft is always limited by the first folding limiting groove; The lever shaft is disposed between the lever assembly and the front leg.

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