Automatic tightening device of tourniquet for blood drawing
By designing an automatic tightening device, the tourniquet is automatically adjusted and protected using an air pump and a ring-shaped airbag. This solves the problems of cumbersome operation and cross-infection in existing technologies, and improves the convenience and safety of the blood drawing process.
Patent Information
- Application Number
- CN202520253860.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-02-18
AI Technical Summary
Existing tourniquets for blood draws are cumbersome to operate, difficult to adjust the pressure, and can easily cause patient discomfort and pose a risk of cross-infection.
An automatic tightening device was designed, comprising a base, a hemostatic structure, an inflation structure, and a protective structure. It utilizes an air pump and a ring-shaped air bladder to automatically tighten the tourniquet, and uses protective cotton to prevent the patient from directly contacting the air bladder, thereby reducing cross-infection.
It enables automatic adjustment and protection of the tourniquet, improving the convenience and safety of operation, and reducing patient discomfort and the risk of cross-infection.
Smart Images

Figure CN223944429U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of hemostasis tightening, especially relates to a blood drawing hemostat automatic tightening device. BACKGROUND
[0002] In the blood drawing process, doctors or nurses will use a wide and elastic hemostat to tighten on the upper arm of the patient, the purpose of doing this is to reduce the venous return, make the vein full, so that it is easier to insert the needle and collect enough blood, the existing blood drawing hemostat has certain drawbacks in use, the medical staff needs to bind the patient's arm through the rubber band or elastic band during blood drawing, the operation process is cumbersome, and the binding strength is difficult to control, cannot be adjusted according to the needs of the patient, and the patient is prone to discomfort, a hemostat is in contact with the arms of different patients, and cross infection is prone to occur, therefore, we provide a blood drawing hemostat automatic tightening device. UTILITY MODEL CONTENTS
[0003] The utility model mainly aims at providing a blood drawing hemostat automatic tightening device, which can effectively solve the problems in the background art.
[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:
[0005] A blood drawing hemostat automatic tightening device, including base, the side surface of base is equipped with installation and has inflation structure, the inside of base is equipped with installation and has protection structure at one side, the upper surface of base is fixedly installed with hemostatic structure at the middle position.
[0006] In a preferred embodiment, the hemostatic structure includes a mounting ring, an annular air bag, a valve, and an exhaust pipe, the inside of the mounting ring is embedded and installed with an annular air bag, one side surface of the annular air bag is embedded and installed with an exhaust pipe, and the surface of the exhaust pipe is embedded and installed with a valve at one side.
[0007] In a preferred embodiment, the base includes a protective cover, a pull-out slot, a door panel, a storage box, a partition, a sliding groove, and a limiting groove, the upper surface of the storage box is provided with a pull-out slot at one side, the upper surface of the storage box is hinged with a protective cover above the pull-out slot, one side surface of the storage box is hinged with a door panel, the inside of the storage box is embedded and installed with a partition, the inside of the storage box is provided with a sliding groove at the front surface and the rear surface, the sliding groove is two groups, and the inside of the storage box is provided with a limiting groove below the sliding groove.
[0008] In a preferred embodiment, the inflation structure includes a gas delivery pipe, an air inlet pipe, and a gas pump, one side surface of the gas pump is fixedly installed with an air inlet pipe, and the upper surface of the gas pump is fixedly installed with a gas delivery pipe.
[0009] In a preferred embodiment, the hemostatic structure and the base are fixedly mounted on the upper surface of the storage box by a mounting ring, the air pump is embedded inside the storage box and located on one side of the partition, and the air delivery pipe is embedded on the surface of the mounting ring and the annular airbag and located on the upper surface of the storage box.
[0010] In a preferred embodiment, the protective structure includes protective cotton and a rotating shaft, with the protective cotton sleeved on the surface of the rotating shaft.
[0011] In a preferred embodiment, the protective structure is installed between the limiting grooves via a rotating shaft.
[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:
[0013] In this invention, an air pump is installed to deliver gas into the annular airbag through an air delivery pipe, causing the annular airbag to expand and tighten, thereby squeezing and stopping bleeding on the patient's arm. The protective structure allows the protective cotton to be pulled out and wrapped around the arm, thus protecting the patient and preventing cross-infection caused by direct contact between the patient's arm and the annular airbag, making it safer and more hygienic. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of an automatic tourniquet tightening device for blood drawing according to this utility model;
[0015] Figure 2 This is a schematic diagram of the interior of the storage box for the automatic tourniquet tightening device for blood drawing according to this utility model;
[0016] Figure 3 This is a detailed diagram of the hemostatic structure of an automatic tourniquet tightening device for blood drawing according to this utility model;
[0017] Figure 4 This is a cross-sectional view of the storage box for the automatic tourniquet tightening device for blood drawing according to this utility model;
[0018] Figure 5 This utility model relates to an automatic tourniquet tightening device for blood drawing. Figure 3 A magnified view of the details at point A.
[0019] In the diagram: 1. Hemostasis structure; 101. Mounting ring; 102. Annular airbag; 103. Valve; 104. Exhaust pipe; 2. Base; 201. Protective cover; 202. Pull-out groove; 203. Door panel; 204. Storage box; 205. Partition; 206. Sliding groove; 207. Limiting groove; 3. Inflatable structure; 301. Air supply pipe; 302. Air inlet pipe; 303. Air pump; 4. Protective structure; 401. Protective cotton; 402. Rotating shaft. DETAILED DESCRIPTION
[0020] To make the purposes, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.
[0021] Reference Figures 1-5 The automatic tightening device for a tourniquet for blood drawing comprises a base 2, an inflation structure 3 embedded and installed on one side surface of the base 2, a protection structure 4 embedded and installed inside the base 2, and a tourniquet structure 1 fixedly installed on the upper surface of the base 2 at the middle position;
[0022] The tourniquet structure 1 comprises a mounting ring 101, an annular air bag 102, a valve 103, and an exhaust pipe 104. The annular air bag 102 is embedded and installed inside the mounting ring 101. When the annular air bag 102 is inflated, it can expand to press and stop bleeding of a patient's arm. The exhaust pipe 104 is embedded and installed on one side surface of the annular air bag 102. The valve 103 is embedded and installed on one side surface of the exhaust pipe 104. The base 2 comprises a protective cover 201, a pull-out slot 202, a door plate 203, a storage box 204, a partition plate 205, a sliding slot 206, and a limiting slot 207. The pull-out slot 202 is formed on one side surface of the upper surface of the storage box 204. The protective cover 201 is hinged to the upper surface of the storage box 204 above the pull-out slot 202. The protective cover 201 is used to protect the protection cotton 401 and reduce the contact between dust in the air and the protection cotton 401. The door plate 203 is hinged to one side surface of the storage box 204. The partition plate 205 is embedded and installed inside the storage box 204. The sliding slots 206 are formed in the front surface and the rear surface of the storage box 204. There are two groups of the sliding slots 206. The limiting slots 207 are formed in the storage box 204 below the sliding slots 206. The inflation structure 3 comprises a gas supply pipe 301 and an air inlet pipe 302. The air inlet pipe 302 is fixedly installed on one side surface of the air pump 303. The gas supply pipe 301 is fixedly installed on the upper surface of the air pump 303. The tourniquet structure 1 and the base 2 are fixedly installed on the upper surface of the storage box 204 through the mounting ring 101. The air pump 303 is embedded and installed inside the storage box 204 at one side of the partition plate 205. The gas supply pipe 301 is embedded and installed on the surface of the mounting ring 101 and the annular air bag 102 and is located on the upper surface of the storage box 204. The protection structure 4 comprises the protection cotton 401 and a rotating shaft 402. The protection cotton 401 is sleeved and installed on the surface of the rotating shaft 402. The protection cotton 401 is a disposable annular protection cloth when it is unfolded and can be sleeved on an arm. The protection structure 4 is embedded and installed between the limiting slots 207 through the rotating shaft 402.
[0023] The implementation principle of the embodiment of the automatic tightening device for blood drawing tourniquet is as follows: in use, first, the protection structure 4 in the base 2 is pulled out and sleeved on the patient's arm, then the patient's arm is embedded into the inside of the hemostasis structure 1, the hemostasis structure 1 is inflated by the inflation structure 3, so as to compress and hemostasis the patient's arm; the protection cover 201 is opened, the protection cotton 401 is pulled out by the pulling slot 202, and is unfolded on the patient's arm, the patient stretches his hand into the inside of the annular air bag 102 and adjusts the position, the air pump 303 in the storage box 204 is started, the air pump 303 draws air into the inside of the annular air bag 102 through the air inlet pipe 302 and the air supply pipe 301, so that the annular air bag 102 is inflated and deformed, the patient's arm is compressed and hemostasis, the amount of inflation can be adjusted according to the patient's own needs, when it is needed to be loosened, the valve 103 can be directly opened, the air is discharged from the air outlet pipe 104, when it is needed to replace the protection cotton 401, the door plate 203 can be opened, the rotating shaft 402 is lifted upwards and is located in the inside of the sliding groove 206, the rotating shaft 402 can be pulled out from the sliding groove 206, the new rotating shaft 402 is embedded into the inside of the sliding groove 206 and is pushed to one side, so that it is located in the limiting groove 207.
[0024] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. An automatic tourniquet tightening device for blood drawing, characterized in that: Includes a base (2), an inflatable structure (3) is embedded on one side surface of the base (2), a protective structure (4) is embedded on one side inside the base (2), and a hemostatic structure (1) is fixedly installed on the upper surface of the base (2) in the middle position.
2. The automatic tourniquet tightening device for blood drawing according to claim 1, characterized in that: The hemostatic structure (1) includes a mounting ring (101), an annular airbag (102), a valve (103), and an exhaust pipe (104). The annular airbag (102) is embedded inside the mounting ring (101), and the exhaust pipe (104) is embedded on one side of the annular airbag (102). The valve (103) is embedded on one side of the surface of the exhaust pipe (104).
3. The automatic tourniquet tightening device for blood drawing according to claim 2, characterized in that: The base (2) includes a protective cover (201), a pull-out groove (202), a door panel (203), a storage box (204), a partition (205), a sliding groove (206), and a limiting groove (207). The upper surface of the storage box (204) has a pull-out groove (202) on one side. The upper surface of the storage box (204) is hinged to the protective cover (201) above the pull-out groove (202). The door panel (203) is hinged to one side surface of the storage box (204). The partition (205) is embedded in the interior of the storage box (204). The interior of the storage box (204) has sliding grooves (206) on both the front and rear surfaces. There are two sets of sliding grooves (206). The interior of the storage box (204) has limiting grooves (207) below the sliding grooves (206).
4. The automatic tourniquet tightening device for blood drawing according to claim 3, characterized in that: The inflation structure (3) includes an air supply pipe (301), an air inlet pipe (302), and an air pump (303). The air inlet pipe (302) is fixedly installed on one side surface of the air pump (303), and the air supply pipe (301) is fixedly installed on the upper surface of the air pump (303).
5. The automatic tourniquet tightening device for blood drawing according to claim 4, characterized in that: The hemostatic structure (1) and the base (2) are fixedly installed on the upper surface of the storage box (204) by the mounting ring (101). The air pump (303) is embedded in the inside of the storage box (204) and located on one side of the partition (205). The air delivery pipe (301) is embedded in the surface of the mounting ring (101) and the annular airbag (102) and located on the upper surface of the storage box (204).
6. The automatic tourniquet tightening device for blood drawing according to claim 5, characterized in that: The protective structure (4) includes a protective cotton (401) and a rotating shaft (402), and the surface of the rotating shaft (402) is covered with a protective cotton (401).
7. The automatic tourniquet tightening device for blood drawing according to claim 6, characterized in that: The protective structure (4) is embedded in the limiting groove (207) via a rotating shaft (402).