Arm supporting device for blood drawing

Abstract

The utility model provides an arm supporting device for blood drawing, which relates to the technical field of blood drawing auxiliary tools, and comprises a positioning seat, an angle adjusting component is arranged in the positioning seat, an adjusting component is rotatably connected in the angle adjusting component, the angle adjusting component comprises a supporting shaft, and a reset spring is arranged on the outer side of the supporting shaft. The outer side of the supporting shaft is in sliding connection with a driving positioning tooth, the outer side of the supporting shaft is fixedly connected with a driven positioning tooth, through the design, a user only needs to conduct simple pressing and rotating operation through the handle, the angle of the hand supporting plate can be adjusted, the operation process is simple and convenient, and in the blood drawing operation process of the user, the operation efficiency is improved. A supporting angle capable of being freely adjusted according to personal comfort is provided, and therefore it is guaranteed that the arm of a user can be kept in the most appropriate and stable state in the whole blood drawing process. And the possibility of blood vessel damage or pain aggravation caused by improper postures is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of blood drawing auxiliary tools, in particular to an arm support device for blood drawing. Background Art

[0002] Blood drawing is a medical process usually performed by medical staff. It refers to the process of extracting a blood sample from the human body by puncturing a blood vessel for various tests and analyses. Blood drawing is usually carried out in clinical diagnosis, disease monitoring, drug treatment monitoring, etc. to obtain specific information in the blood.

[0003] The existing patent CN210727720U discloses an auxiliary blood drawing support pad, which includes a pad body. An anti-pressure layer is provided on the upper surface of the pad body. A strap is provided at a position near the end of the side wall of the pad body. An adjusting device is installed on the front side of the pad body. A plurality of adhesive stickers are provided at equal intervals at the bottom of the pad body.

[0004] This patent solves the problem that the arm is suspended during blood drawing, which is likely to cause discomfort to the patient and affect blood drawing. Through the designed pad body, it supports the patient's arm, prevents the arm from being suspended, and provides convenience for subsequent blood drawing.

[0005] However, in actual use, there are still the following deficiencies. For example, for the elderly, children or patients with arm injuries, their arms may not be able to be naturally straightened or maintain a fixed posture. In this case, since the arm support device usually adopts a fixed design, the device cannot adapt to the arm postures and comfort requirements of different patients, thus unable to provide the best support for all patients and resulting in discomfort to the patients during blood drawing.

[0006] Therefore, the utility model provides an arm support device for blood drawing. Summary of the Utility Model

[0007] The purpose of the utility model is to solve the defects existing in the prior art and provide an arm support device for blood drawing.

[0008] To achieve the above purpose, the utility model adopts the following technical scheme: an arm support device for blood drawing, including a positioning seat. An angle adjustment component is arranged inside the positioning seat. An adjustment component is rotatably connected inside the angle adjustment component;

[0009] The angle adjustment component includes a support shaft. A return spring is arranged on the outer side of the support shaft. A driving positioning tooth is slidably connected to the outer side of the support shaft. A driven positioning tooth is fixedly connected to the outer side of the support shaft. One end of the support shaft away from the driving positioning tooth is fixedly connected with a positioning column. The top end of the outer side of the positioning column is fixedly connected with a support frame. The top end of the support frame is fixedly connected with a hand support plate.

[0010] As a preferred embodiment, the adjusting assembly includes a rotating shaft, the outside of the rotating shaft is rotatably connected inside the positioning column, a handle is fixedly connected to the outside of the rotating shaft, a limiting ring is fixedly connected to the outside of the positioning seat, a connecting rod is rotatably connected inside the limiting ring, a clamping groove is formed at one end of the connecting rod away from the positioning seat, and a rotating wheel is rotatably connected to the clamping groove.

[0011] The technical effect of adopting the above technical solution is that the support shaft can be switched between a fixed position and a movable position, so as to adjust the angle of the arm support device to adapt to different usage scenarios and user needs, ensure the comfort and stability of the patient during blood drawing, and help the operator reduce the operation force when adjusting the angle, improving the convenience of operation.

[0012] As a preferred embodiment, one end of the return spring is fixedly connected to the positioning seat, and the other end of the return spring is fixedly connected to the support shaft.

[0013] The technical effect of adopting the above technical solution is that it ensures that after each use, the angle adjustment assembly can quickly return to a stable starting state, reducing the extra work and adjustment time of the operator.

[0014] As a preferred embodiment, the adjacent ends of the active positioning tooth and the driven positioning tooth are engaged with each other.

[0015] The technical effect of adopting the above technical solution is that it effectively fixes the handrest plate at the selected angular position.

[0016] As a preferred embodiment, one end of the driven positioning tooth is fixedly connected to the positioning column.

[0017] The technical effect of adopting the above technical solution is that it ensures a firm connection of the support shaft during the angle adjustment process.

[0018] As a preferred embodiment, the outside of the handle is rotatably connected to the rotating wheel, and the outside of the handle is engaged with the clamping groove.

[0019] The technical effect of adopting the above technical solution is that by rotating the handle to adjust the position of the rotating wheel, and then changing the angle of the handrest plate, it enhances the control ability of the angle adjustment of the arm support device, making the adjustment more accurate and convenient.

[0020] Compared with the prior art, the advantages and positive effects of the present utility model are as follows

[0021] With the angle adjustment component and the adjustment component structure provided in the present utility model, when the user tightly holds the handle and applies pressure, through the lever action of the rotating wheel, the force is converted into the pulling force on the outer positioning post, driving the support shaft and the driven positioning tooth to move. After the driven positioning tooth disengages from the driving positioning tooth, the user can rotate the handle to adjust the angle of the handrest plate. The handle is tightly engaged with the card slot, and the connecting rod slides on the limiting circle, making the angle of the handrest plate flexibly adjustable. When the pressure is reduced, the return spring pushes the support shaft and the driven positioning tooth to engage with the driving positioning tooth again, fixing the handrest plate at the selected angle. This design enables the user to adjust the angle of the handrest plate only through simple pressing and rotating operations of the handle, with a simple and convenient operation process. Moreover, during the blood drawing operation, it provides a support angle that can be freely adjusted according to personal comfort for the user, thus ensuring that the user's arm can remain in a most suitable and stable state throughout the blood drawing process. Effectively reducing the possibility of blood vessel damage or increased pain caused by improper posture. Description of the Drawings

[0022] Figure 1 Stereogram of an arm support device for blood drawing provided by the present utility model;

[0023] Figure 2 Sectional view of the positioning seat structure of an arm support device for blood drawing provided by the present utility model;

[0024] Figure 3 Exploded view of the angle adjustment component structure of an arm support device for blood drawing provided by the present utility model;

[0025] Figure 4 Exploded view of the adjustment component structure of an arm support device for blood drawing provided by the present utility model.

[0026] Legend:

[0027] 1. Positioning seat;

[0028] 2. Angle adjustment component; 21. Support shaft; 22. Return spring; 23. Driving positioning tooth; 24. Driven positioning tooth; 25. Positioning post; 26. Support frame; 27. Handrest plate;

[0029] 3. Adjustment component; 31. Rotating shaft; 32. Handle; 33. Connecting rod; 34. Rotating wheel; 35. Card slot; 36. Limiting circle. Detailed Implementation Modes

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] As Figure 1 - Figure 3 shown, this embodiment provides a technical solution: an arm support device for blood drawing, including a positioning seat 1. An angle adjustment component 2 is arranged inside the positioning seat 1, and an adjustment component 3 is rotatably connected inside the angle adjustment component 2;

[0032] The angle adjustment component 2 includes a support shaft 21. A return spring 22 is arranged outside the support shaft 21. One end of the return spring 22 is fixedly connected to the positioning seat 1, and the other end of the return spring 22 is fixedly connected to the support shaft 21. An active positioning tooth 23 is slidably connected to the outside of the support shaft 21. A driven positioning tooth 24 is fixedly connected to the outside of the support shaft 21. The adjacent ends of the active positioning tooth 23 and the driven positioning tooth 24 are engaged with each other. One end of the support shaft 21 away from the active positioning tooth 23 is fixedly connected to a positioning column 25. One end of the driven positioning tooth 24 is fixedly connected to the positioning column 25. The outer top end of the positioning column 25 is fixedly connected to a support frame 26. The top end of the support frame 26 is fixedly connected to a hand support plate 27. The support shaft 21 ensures the stability of the overall connection. The return spring 22 outside the support shaft 21 ensures that after the angle is adjusted, the return spring 22 can automatically reset the support shaft 21 to the initial position, maintaining the stability and controllability of the device. When the support shaft 21 slides inside the active positioning tooth 23, and the active positioning tooth 23 is fixedly connected to the positioning seat 1, by engaging the active positioning tooth 23 with the driven positioning tooth 24, the user can control the position of the driven positioning tooth 24 by pulling the support shaft 21, achieving the adjustment effect. The design of the positioning column 25 outside the driven positioning tooth 24 provides a loading platform, and through the support frame 26, the hand support plate 27 at the top can be stably supported, thereby providing a more comfortable arm placement angle for the patient and ensuring the stability of the patient during blood drawing;

[0033] To reduce the problem of requiring a large force for adjustment during the adjustment process, as Figure 1 、 Figure 2 and Figure 4As shown: In this solution, the adjustment component 3 includes a rotating shaft 31. The outer side of the rotating shaft 31 is rotatably connected inside the positioning column 25. A handle 32 is fixedly connected to the outer side of the rotating shaft 31. A limiting ring 36 is fixedly connected to the outer side of the positioning seat 1. A connecting rod 33 is rotatably connected inside the limiting ring 36. A clamping groove 35 is formed at one end of the connecting rod 33 away from the positioning seat 1. The outer side of the handle 32 is engaged with the clamping groove 35. A rotating wheel 34 is rotatably connected to the clamping groove 35. The outer side of the handle 32 is rotatably connected to the rotating wheel 34. The rotating shaft 31 can be kept stable when adjusting the angle by being rotatably connected inside the positioning column 25. The design of the handle 32 enables the operator to easily rotate the rotating shaft 31 and adjust the angle of the angle adjustment component 2. The function of the limiting ring 36 is to limit the rotation range of the rotating shaft 31 and ensure that the angle adjustment is carried out within a preset safe range. The connecting rod 33 is rotatably connected inside the limiting ring 36. The design of the connecting rod 33 enables it to move as the limiting ring 36 rotates and assist in adjusting the angle of the rotating shaft 31. The outer side of the handle 32 is engaged with the clamping groove 35. This design forms an effective transmission mechanism between the handle 32 and the connecting rod 33. Through the rotation of the handle 32, the rotational force can be effectively transmitted to the connecting rod 33, thereby adjusting the angle of the rotating shaft 31. A rotating wheel 34 is also rotatably connected to the clamping groove 35, which reduces the friction when the handle 32 rotates towards the positioning seat 1 and makes it labor-saving and more convenient to adjust the angle of the handrest plate 27 by using the lever principle when the positioning column 25 drives the driven positioning tooth 24 to pull outwards.

[0034] Working principle:

[0035] As Figure 1 - Figure 4 shown:

[0036] When in use: First, the user needs to firmly hold the handle 32 and accurately align it with the clamping groove 35. During this process, when the user applies an appropriate pressure towards the positioning seat 1, the handle 32 will form a lever action through the rotating wheel 34 on the connecting rod 33. This lever action will drive the rotating shaft 31 to pull the positioning column 25 outwards. At this time, the support shaft 21 will drive the driven positioning tooth 24 to move synchronously, so that the driven positioning tooth 24 disengages from the engagement state with the driving positioning tooth 23. Next, the user needs to rotate the handle 32. Since the handle 32 is tightly engaged with the clamping groove 35 and the connecting rod 33 can slide on the limiting ring 36, the support frame 26 at the top of the positioning column 25 can drive the handrest plate 27 to adjust the angle. When the adjustment reaches the appropriate angle, the user needs to reduce the pressure on the handle 32. While the pressure on the handle 32 decreases, the pressure of the return spring 22 will cause the support shaft 21 to move towards the positioning seat 1, thereby driving the driven positioning tooth 24 to engage with the driving positioning tooth 23. Through this process, the effect of positioning the handrest plate 27 is achieved.

[0037] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the relevant art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as they do not depart from the technical solution content of the present utility model, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An arm support device for drawing blood, comprising a positioning seat (1), characterized in that: An angle adjustment component (2) is disposed inside the positioning seat (1), and an adjustment component (3) is rotatably connected inside the angle adjustment component (2); The angle adjustment assembly (2) comprises a support shaft (21), a return spring (22) is arranged on the outer side of the support shaft (21), an active positioning tooth (23) is slidably connected to the outer side of the support shaft (21), a driven positioning tooth (24) is fixedly connected to the outer side of the support shaft (21), a positioning column (25) is fixedly connected to one end of the support shaft (21) away from the active positioning tooth (23), a support frame (26) is fixedly connected to the outer top of the positioning column (25), and a hand support plate (27) is fixedly connected to the top of the support frame (26).

2. The arm support device for drawing blood according to claim 1, characterized in that: The adjustment assembly (3) comprises a rotating shaft (31), the outer side of the rotating shaft (31) is rotatably connected to the inside of the positioning column (25), the outer side of the rotating shaft (31) is fixedly connected to a handle (32), the outer side of the positioning seat (1) is fixedly connected to a limit rotating circle (36), the inner side of the limit rotating circle (36) is rotatably connected to a connecting rod (33), and a slot (35) is provided at one end of the connecting rod (33) away from the positioning seat (1), and a rotating wheel (34) is rotatably connected to the slot (35).

3. The arm support device for drawing blood according to claim 1, characterized in that: One end of the return spring (22) is fixedly connected to the positioning seat (1), and the other end of the return spring (22) is fixedly connected to the support shaft (21).

4. The arm support device for drawing blood according to claim 1, characterized in that: The active positioning tooth (23) and the passive positioning tooth (24) are engaged with each other at adjacent ends.

5. The arm support device for drawing blood according to claim 1, characterized in that: One end of the driven positioning tooth (24) is fixedly connected to the positioning column (25).

6. The arm support device for drawing blood according to claim 2, characterized in that: The outer side of the handle (32) is rotatably connected to the rotating wheel (34), and the outer side of the handle (32) is engaged with the clamping groove (35).

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