Lifting device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a lifting device which comprises a support, a tooth groove rod and two vertical rods are arranged between an upper supporting plate and a lower supporting plate of the support, a lifting structure is embedded in the middle of the support structure in the direction of the tooth groove rod in a sliding mode, and a hanging rod is arranged in front of the lifting structure; the lifting structure comprises a shell, a pressing lifting structure is arranged in the shell, the pressing lifting structure achieves pressing every time through a lifting plate structure of the pressing lifting structure, and the shell ascends under the supporting effect of a lifting plate. A one-way limiting structure for limiting descending is arranged above the shell, and a limiting releasing structure is further arranged at the tail end of the one-way limiting structure. Under the supporting effect of the lifting plate in the lifting structure, the shell ascends, the ascending shell pushes the one-way limiting structure to ascend, descending limiting is achieved under the effect of the one-way limiting structure, and the stability in the adjusting process is improved.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and in particular to lifting devices. Background Technology

[0002] In some surgical procedures involving the arm and wrist, it is necessary to maintain the arm in a vertical position. In such cases, a wrist joint fixation structure is required. This structure typically consists of a columnar support with several positioning holes. The appropriate hole is selected based on the desired position to fix the hanging rod at the top of the support.

[0003] However, this device has the following problems: firstly, due to the low density of the limiting holes, the adjustable range is limited, and it may not be able to achieve a suitable position; secondly, because the patient's arm may already be suspended during adjustment, the adjustment structure will have a certain tension, which could cause the patient's arm to fall directly if not handled carefully, resulting in a surgical accident, which is unacceptable. Therefore, to solve the above problems, this application provides a lifter based on the existing stent. Utility Model Content

[0004] To address the aforementioned issues, this application provides a lifting device.

[0005] The lifting device provided in this application includes a bracket that docks with an external structure. A toothed rod and two uprights are provided between the upper and lower support plates of the bracket. The top view between the toothed rod and the uprights forms an isosceles triangle structure. The feature is that a lifting structure is slidably embedded in the middle of the bracket structure along the direction of the toothed rod, and a hanging rod is provided in front of the lifting structure.

[0006] The lifting structure includes an outer shell, and a pressing lifting structure is provided inside the outer shell. The pressing lifting structure utilizes its lifting plate structure to realize that with each press, the outer shell moves upward under the support of the lifting plate.

[0007] The outer shell is provided with a one-way limiting structure for restricting downward movement, and the end of the one-way limiting structure is also provided with a limit release structure.

[0008] With the support of the lifting plate in the lifting structure, the outer shell moves upward. The upward-moving outer shell pushes the one-way limiting structure upward, and the one-way limiting structure achieves downward limiting. In this way, the upward position of the lifting structure on the support structure is adjusted. The limiting release structure can reset the lifting structure. This achieves stability during the upward movement of the lifting structure and the hanging rod, avoiding the possibility of sudden fall.

[0009] Preferably, the top end of the lifting structure has a fixed handle integrally formed, and a handle that is rotatably connected to the front end of the housing is provided below the fixed handle. A push pin is also fixedly connected to the handle in front of its pivot position.

[0010] Preferably, the lifting plate has a through hole in the vertical direction, and the lifting plate slides on the toothed rod through the through hole with a clearance fit between the two. The side of the lifting plate near the handle is located below and in contact with the push pin.

[0011] Preferably, a spring is provided between the lower part of the lifting plate and the outer casing, and the spring and the toothed rod are coaxially arranged.

[0012] Preferably, the unidirectional limiting structure includes a limiting piece, the front middle section of which is rotatably connected to the outer shell via a rotating shaft, the front end of which is provided with a locking tooth that engages with the toothed rod, and the end of which is elastically connected to the outer shell via a spring.

[0013] Preferably, both the toothed rod and the locking tooth are right-angled triangular locking tooth structures, with their horizontal sections located at the bottom and their inclined sections fitting together.

[0014] Preferably, the top of the outer shell is further provided with a limiting seat that cooperates with the limiting piece, and the limiting seat has a stepped structure.

[0015] Preferably, the limit release structure includes a limit lever, the front end of which is located below the limit plate, the limit lever is rotatably connected to the housing at 1 / 3 position via a rotating shaft, and the end of the limit lever is located outside the housing.

[0016] In summary, this application includes the following beneficial technical effects:

[0017] Supported by the lifting plate inside the outer shell, the outer shell moves upward. The upward movement of the outer shell pushes the one-way limiting structure upward, and the downward limiting is achieved through the interaction of the limiting plate and the second spring. This allows the lifting structure to adjust its upward position on the support structure, thus ensuring the stability of the adjustment process and avoiding sudden drops that could cause surgical accidents. Attached Figure Description

[0018] Figure 1 It is the isometric drawing in Embodiment 1 of this application;

[0019] Figure 2 This is a front view of Embodiment 1 of this application;

[0020] Figure 3 This is a cross-sectional view of Embodiment 1 of this application;

[0021] Figure 4 This is an enlarged view of point A in Embodiment 1 of this application;

[0022] Figure 5 This is a structural diagram of the lifting plate in Embodiment 1 of this application;

[0023] Figure 6This is a usage effect diagram from Embodiment 1 of this application.

[0024] Explanation of reference numerals in the attached drawings: 1. Bracket; 11. Toothed rod; 12. Upright rod; 2. Outer shell; 21. Limiting seat; 3. Fixing handle; 4. Handle; 41. Push pin; 5. Hanging rod; 6. Limiting lever; 7. Lifting plate; 71. Through hole; 8. Spring 1; 9. Limiting piece; 91. Connecting pin; 92. Rotating shaft 1; 93. Clamping tooth; 10. Spring 2. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 - Figure 6 This application will be described in further detail.

[0026] Example 1:

[0027] Lifter, see reference Figure 1 - Figure 6 A toothed rod 11 and two uprights 12 are provided between the upper and lower support plates of the bracket 1. The top view between the toothed rod 11 and the uprights 12 forms an isosceles triangle structure. The bracket 1 is characterized by having a lifting structure slidably embedded in the middle of the structure along the direction of the toothed rod 11, and a hanging rod 5 is provided in front of the lifting structure.

[0028] The lifting structure includes a housing 2, inside which is a press-lifting structure. This structure utilizes a lifting plate 7 to allow the housing 2 to rise with each press, supported by the lifting plate 7. A fixed handle 3 is integrally formed at the top end of the housing 2. Below the fixed handle 3 is a handle 4 rotatably connected to the housing at its front end. A push pin 41 is fixedly connected to the handle 4 at its pivot position. The lifting plate 7 has a vertical through hole 71, through which it slides onto the toothed rod 11 with a clearance fit. The side of the lifting plate 7 closest to the handle 4 is located below and in contact with the push pin 41. A spring 8 is located between the lower part of the lifting plate 7 and the housing 2, and the spring 8 and the toothed rod 11 are coaxially arranged.

[0029] When the device is in use, pulling the handle 4 causes it to rotate around its pivot, causing the push pin 41 at its front end to move downwards. This applies force to one side of the lifting plate 7. Due to uneven force, the lifting plate 7 tilts towards the side of the push pin 41. At this time, the upper and lower edges of the through hole 71 of the lifting plate 7 contact the toothed rod 11, and their positions are relatively fixed. As the handle 4 continues to move, the interlocking structures cause the handle 4 to use the push pin 41 as a fulcrum and the pivot position as the driven position, lifting the outer casing 2 vertically. After lifting to the desired position, releasing the handle 4 causes the spring 8 and the toothed rod 11 to be coaxially arranged, resulting in a more even force exerted by the spring 8 on the lifting plate 7. This causes the lifting plate 7 to lose its restraint from the toothed rod 11, and it will reset under the action of the spring 8. During the reset process, the push pin 41 will also shift, causing the handle 4 to reset around its pivot to its initial position. This process completes one press-and-lift operation.

[0030] A one-way limiting structure for restricting downward movement is provided on the upper part of the outer shell 2, and a limit release structure is also provided at the end of the one-way limiting structure. The one-way limiting structure includes a limiting piece 9, the front middle section of which is rotatably connected to the outer shell 2 via a rotating shaft 92. Its front end is provided with a locking tooth 93 that engages with the toothed rod 11, and its end is elastically connected to the outer shell 2 via a spring 10. Both ends of the spring are rotatably connected with connecting pins 91. One connecting pin 91 is welded to the end of the limiting piece 9, and the other is welded to the inner wall of the outer shell 2. The spring is always in a stretched state.

[0031] Both the toothed rod 11 and the locking tooth 93 are right-angled triangular locking tooth structures. The horizontal sections of both are located at the bottom, and their inclined sections fit together. The triangular locking tooth structure of the support legs prevents downward movement when engaged, but does not impede upward displacement, achieving unidirectional limiting. The top of the outer casing 2 also has a limiting seat 21 that cooperates with the limiting piece 9. The limiting seat 21 has a stepped structure, as shown in the reference... Figure 4 The function of the limiting seat 21 is to prevent the limiting piece 9 from rotating clockwise, but it provides a certain range for its counterclockwise rotation. The purpose of this range is twofold: firstly, during the upward movement of the outer shell 2, the limiting piece 9 can rotate counterclockwise to the position where the locking tooth 93 and the toothed rod 11 disengage, thus avoiding direct locking between the two. After counterclockwise rotation, the limiting piece 9 will be reset under the action of the second spring 10. Secondly, it ensures that the limiting piece 9 can be operated by the limiting lever 6 in the future.

[0032] The limit release structure includes a limit lever 6. The front end of the limit lever 6 is located below the limit piece 9. The limit lever 6 is rotatably connected to the outer shell 2 at 1 / 3 position via a rotating shaft. The end of the limit lever 6 is located outside the outer shell 2. By pressing the end of the limit lever 6, it rotates around the rotating shaft. After its front end tilts upward, it will cause the limit piece 9 to rotate counterclockwise around its rotating shaft, thereby causing the locking tooth 93 and the tooth groove rod 11 to lose their limit. At this time, the lifting structure can slide downward to reset.

[0033] Reference Figure 6 When in use, the device is usually used in conjunction with an external fixation frame. It is installed on the top of the external fixation frame, and the structure below the hanging rod 5 is the structure for suspending the patient's arm. When the height needs to be adjusted, the handle 4 is pulled up continuously. During the pulling process, the position of the outer shell 2 is raised continuously. At the same time, because the locking teeth 93 and the toothed rod 11 are engaged one by one, it is ensured that there will be no sudden loss of support during the adjustment process, thereby avoiding the sudden drop of the hanging rod position and causing surgical accidents.

[0034] The foregoing description of exemplary embodiments of the lifting device provided by this disclosure refers to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, which is determined by the appended claims.

Claims

1. A lifting device, comprising a bracket (1) that docks with an external structure, wherein a toothed rod (11) and two uprights (12) are provided between the upper and lower support plates of the bracket (1), and the planar view between the toothed rod (11) and the uprights (12) forms an isosceles triangle structure, characterized in that: The bracket (1) structure middle along the direction of the tooth groove rod (11) slide embedded lifting structure, lifting structure front set of hanging rod (5); The lifting structure includes a shell (2), the shell (2) is provided with a pressing lifting structure, the pressing lifting structure utilizes its lifting plate (7) structure, realizes each time pressing, the shell (2) is supported under the lifting plate (7) and goes up; The shell (2) is provided with a one-way limiting structure for downward limitation, and the one-way limiting structure is further provided with a limiting release structure.

2. The puller of claim 1, wherein: The shell (2) of the lifting structure is integrally formed with a fixed handle (3) at the top end, and the handle (3) is provided below with a handle (4) rotatably connected with the shell at the front end, and the handle (4) is further fixedly connected with a propelling pin (41) in front of the rotation shaft position.

3. The puller of claim 2, wherein: The lifting plate (7) is provided with a through hole (71) in the vertical direction, and the lifting plate (7) is sleeved on the tooth groove rod (11) through the through hole (71), and the gap between them is matched, and the side of the lifting plate (7) close to the handle (4) is below the propelling pin (41) and is attached thereto.

4. The puller of claim 3, wherein: The spring one (8) is arranged between the lower side of the lifting plate (7) and the shell (2), and the spring one (8) and the tooth groove rod (11) are coaxially arranged.

5. The puller of claim 1, wherein: The one-way limiting structure includes a limiting piece (9), the front middle segment position of the limiting piece (9) is rotatably connected with the shell (2) through a rotation shaft one (92), the front end is provided with a clamping tooth (93) matched with the tooth groove rod (11), and the tail end is elastically connected with the shell (2) through a spring two (10).

6. The puller of claim 5, wherein: The tooth groove rod (11) and the clamping tooth (93) are both straight triangle clamping tooth (93) structures, and the horizontal segments of the two are both below, and the inclined segments are attached to each other.

7. The puller of claim 6, wherein: The top of the shell (2) is further provided with a limiting seat (21) matched with the limiting piece (9), and the limiting seat (21) is in a stepped structure.

8. The puller of claim 7, wherein: The limiting release structure includes a limiting lever (6), the front end of the limiting lever (6) is below the limiting piece (9), the limiting lever (6) is rotatably connected with the shell (2) at the 1 / 3 position, and the tail end of the limiting lever (6) is outside the shell (2).

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