Double-safety vein blood taking needle
The double-safety venous blood collection needle addresses residual blood leakage and needle-stick hazards through integrated safety sealing and anti-needlestick mechanisms, enhancing safety and hygiene in blood collection procedures.
Patent Information
- Application Number
- CN202420523233.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-18
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-03-18
AI Technical Summary
Existing venous blood collection needles face issues of residual blood leakage leading to cross-infection and needle-stick injuries due to lack of effective blocking mechanisms and safety features.
A double-safety venous blood collection needle design incorporating safety sealing mechanisms with a tie band, threaded column, anti-needlestick mechanism with a limiting cylinder and anti-slip ring, and anti-falling mechanism with fitting tapes and adhesive tape to prevent blood leakage and accidental needle exposure.
The design effectively seals residual blood within the collection hose and protects against needle-stick injuries by manually activating the safety mechanisms, reducing the risk of cross-infection and ensuring safe handling.
Smart Images
Figure CN222285478U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of medical instruments, in particular to a double-safety venous blood collection needle. Background Art
[0002] A venous collection needle is a device used for medical blood collection. It collects blood samples by puncturing a vein. Venous collection needles are commonly used in hospitals, clinics and laboratories for various blood tests such as hematology, biochemical tests, blood typing, and collecting blood samples for medical purposes such as blood transfusion.
[0003] In the application number CN201620727817.3, a "venous blood collection needle" is disclosed. This application solves the problem that the existing blood collection needles are prone to detachment from the blood collection needle after repeated operation when responding to multiple consecutive blood collections. However, the venous blood collection needle in this application does not have a relevant blocking mechanism. In practice, venous blood collection needles are mostly disposable medical supplies. After the blood collection needles are used, a small amount of blood will remain in the blood collection hose. After the blood collection needles are discarded, the residual blood may flow out of the blood collection hose, which may easily cause cross infection. In addition, there are some safety hazards in the existing blood collection needle design. For example, the needle may be accidentally exposed, causing harm to medical staff and patients. Therefore, it is necessary to develop a safer venous blood collection needle. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a double-safety venous blood collection needle, which solves the problem of some residual blood flowing out and needle-stick injuries after blood collection.
[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a double-safety venous blood collection needle, including a venous needle, one end of the venous needle is snap-connected with a blood collection hose, and safety sealing mechanisms are arranged on the outer sides of both ends of the blood collection hose, and the safety sealing mechanisms include a fixing ring, a tie band, a tightening pad, a concave gasket and a threaded column, the tie band is sleeved on the outer side of the blood collection hose, and fixing rings are arranged on both sides of the tie band, and the two fixing rings are both penetrated and arranged on the outer side of the blood collection hose, the tie band penetrates the tightening pad, the upper surface of the tightening pad is fixedly connected with a concave gasket, the middle of the concave gasket is threadedly connected with a threaded column, and the lower end of the threaded column is penetrated and arranged on the lower surface of the tightening pad;
[0006] An anti-needlestick mechanism is arranged at the rear end of the intravenous needle, and the anti-needlestick mechanism includes a limiting cylinder, an anti-needlestick cylinder and an anti-slip ring. The limiting cylinder is fixedly connected to the outside of the front fixing ring, and an anti-needlestick cylinder is arranged inside the limiting cylinder, and the anti-needlestick cylinder is threadedly connected to the limiting cylinder, and the anti-needlestick cylinder is sleeved on the outside of the intravenous needle.
[0007] Preferably, an anti-falling mechanism is provided on the outside of one end of the blood collection hose located at the venous needle, and the anti-falling mechanism includes a fitting tape and an adhesive tape. Two fitting tapes are provided, and both fitting tapes are fixedly connected to the blood collection hose.
[0008] Preferably, adhesive tape is provided on the lower surfaces of the two bonding tapes.
[0009] Preferably, an anti-slip ring is provided on the outer side of the front end of the anti-acupuncture tube.
[0010] Preferably, a connecting column is fixedly connected to the rear end of the blood sampling hose.
[0011] Preferably, the connecting column is fittedly arranged on the outside of the rear fixing ring, an annular sleeve is embedded in the rear end of the connecting column, a built-in needle is arranged inside the annular sleeve, and the front end of the built-in needle passes through the connecting column and is fixedly connected to the connecting column.
[0012] Beneficial Effects
[0013] The utility model provides a double safety venous blood collection needle. Compared with the prior art, it has the following beneficial effects:
[0014] 1. In the utility model, by means of the safety blocking mechanism, after using the blood collection needle to collect blood from the vein, the medical staff can manually pull out the tie bands located at the penetration position of the tightening pad, until the tie bands completely seal the blood collection hose, and then manually twist the threaded column along the pointer to move the threaded column downward. The threaded column after moving downward can press the blood collection hose against the bottom upper surface of the tightening pad, thereby fixing the tie band. In this way, after the blood collection needle is used, both ends of the blood collection hose can be blocked to prevent the residual blood inside from flowing out to the outside, thereby reducing the risk of cross infection.
[0015] 2. In the utility model, by setting up the anti-needlestick mechanism, before using the blood collection needle, the medical staff can pinch the anti-slip ring with two fingers and twist the anti-needlestick cylinder in the clockwise direction to make the anti-needlestick cylinder rotate into the limit cylinder. At this time, the venous needle is completely exposed. After the blood collection is completed, the anti-needlestick cylinder can be twisted counterclockwise to cover the position of the venous needle again to prevent accidental punctures;
[0016] 3. In the utility model, by means of the anti-falling mechanism, before the venous blood collection needle is used, the annular sleeve at the rear end of the blood collection hose is connected to the vacuum blood collection tube, and then the venous needle is inserted into the patient's vein. At this time, the lower surfaces of the two fitting belts can be fitted to the skin near the patient's vein and fixed by adhesive tape to prevent the venous needle from falling off from the patient's vein due to the shaking of the blood collection hose during the subsequent blood collection process. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1This is a schematic diagram of the rear three-dimensional structure of the double-safety venous blood collection needle proposed by the utility model;
[0018] Figure 2 This is a schematic diagram of the front three-dimensional structure of the double-safety venous blood collection needle proposed by the utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the double safety venous blood collection needle proposed by the utility model from an oblique upper perspective;
[0020] Figure 4 The double safety venous blood collection needle proposed by the utility model Figure 2 A is an enlarged view of the middle image.
[0021] Legend:
[0022] 1. Intravenous needle; 2. Blood collection hose; 3. Safety sealing mechanism; 301. Fixing ring; 302. Tie band; 303. Tightening pad; 304. Concave washer; 305. Threaded column; 4. Anti-falling mechanism; 401. Fitting tape; 402. Adhesive patch; 5. Connecting column; 6. Anti-needlestick mechanism; 601. Limiting cylinder; 602. Anti-needlestick cylinder; 603. Anti-slip ring; 7. Annular sleeve; 8. Built-in needle. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] See also Figure 1-Figure 4 The utility model provides two technical solutions, which specifically include the following embodiments:
[0025] Embodiment 1:
[0026] The double safety venous blood collection needle comprises a venous needle 1, one end of which is snap-connected with a blood collection hose 2, and safety sealing mechanisms 3 are arranged on the outer sides of both ends of the blood collection hose 2. The safety sealing mechanisms 3 comprise a fixing ring 301, a tie band 302, a tightening pad 303, a concave washer 304 and a threaded column 305. The surface of the tie band 302 is rough, and the tie band 302 is sleeved on the outer side of the blood collection hose 2. Fixing rings 301 are arranged on both sides of the tie band 302, and the two fixing rings 301 are both penetrated and arranged on the outer side of the blood collection hose 2. The tie band 302 penetrates the tightening pad 303, and the upper surface of the tightening pad 303 is fixedly connected with a concave washer 304, and the middle of the concave washer 304 is threadedly connected with a threaded column 305, and the lower end of the threaded column 305 is penetrated and arranged on the lower surface of the tightening pad 303. It should be noted that after venous blood sampling, the double-sealing safety protection effect is achieved by sealing both ends of the blood collection hose 2.
[0027] During operation, after using the blood collection needle to draw blood from the vein, the medical staff can manually pull out the tie band 302 located at the position where the tightening pad 303 passes through, until the tie band 302 completely seals the blood collection hose 2, and then manually twist the threaded column 305 along the pointer to move the threaded column 305 downward. The threaded column 305 that moves downward can press the blood collection hose 2 against the bottom upper surface of the tightening pad 303, thereby fixing the tie band 302. In this way, after the blood collection needle is used, the two ends of the blood collection hose 2 can be sealed to prevent the residual blood inside it from flowing out to the outside, thereby reducing the risk of cross infection.
[0028] Embodiment 2:
[0029] On the basis of the first embodiment, the rear end of the intravenous needle 1 is provided with an anti-needle puncture mechanism 6, which includes a limiting tube 601, an anti-needle puncture tube 602 and an anti-slip ring 603. The limiting tube 601 is fixedly connected to the outside of the front fixing ring 301, and the anti-needle puncture tube 602 is arranged inside the limiting tube 601, and the anti-needle puncture tube 602 is threadedly connected to the limiting tube 601. The anti-needle puncture tube 602 is sleeved on the outside of the intravenous needle 1, and the blood sampling hose 2 is located on the outside of one end of the intravenous needle 1. The anti-falling mechanism 4 is provided, and the anti-falling mechanism 4 includes a fitting tape 401 and an adhesive tape 402. The number of fitting tapes 401 is two, and the two fitting tapes 401 are fixedly connected to the blood sampling hose 2, and the lower surface of each fitting tape 401 is provided with an adhesive tape. The anti-slip ring 603 is provided on the outside of the front end of the anti-needle puncture tube 602, and the rear end of the blood sampling hose 2 is fixedly connected with a connecting column 5, and the connecting column 5 is connected to the blood sampling hose 2 are mutually interpenetrating, the connecting column 5 is fitted and arranged on the outer side of the rear fixing ring 301, the rear end of the connecting column 5 is embedded with an annular sleeve 7, the inside of the annular sleeve 7 is provided with a built-in needle 8, the front end of the built-in needle 8 penetrates the connecting column 5 and is fixedly connected with the connecting column 5, before the venous blood collection needle is used, the annular sleeve 7 at the rear end of the blood collection hose 2 is connected with the vacuum blood collection tube, the connection method is that the suction end of the vacuum blood collection tube is directly inserted into the annular sleeve 7, the built-in needle 8 located in the annular sleeve 7 is covered by the annular sleeve 7, the built-in needle 8 at the rear end of the blood collection needle is avoided to be exposed, and needle puncture is prevented, and then the venous needle 1 is inserted into the patient's vein position, at this time, the lower surfaces of the two fitting belts 401 can be fitted to the skin position near the patient's vein, and fixed by the adhesive patch 402, so as to prevent the venous needle 1 from falling off from the patient's vein position due to the shaking of the blood collection hose 2 during the subsequent blood collection process.
[0030] Before using the blood collection needle, medical staff can pinch the anti-slip ring 603 with two fingers and twist the anti-needlestick tube 602 in the clockwise direction to screw the anti-needlestick tube 602 into the limiting tube 601. At this time, the venous needle 1 is completely exposed and will not affect the subsequent puncture of the venous needle 1 into the patient's vein. After the blood collection is completed, the anti-needlestick tube 602 can be twisted counterclockwise to cover the position of the venous needle 1 again to prevent accidental punctures.
[0031] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the application should be included in the protection scope of the present application.
Claims
1. A double safety venous blood collection needle, comprising a venous needle (1), characterized in that: One end of the venous needle (1) is snap-connected to a blood sampling hose (2), and safety blocking mechanisms (3) are provided on the outer sides of both ends of the blood sampling hose (2). The safety blocking mechanisms (3) comprise a fixing ring (301), a tie band (302), a tightening pad (303), a concave gasket (304) and a threaded column (305). The tie band (302) is sleeved on the outer side of the blood sampling hose (2), and fixing rings (301) are provided on both sides of the tie band (302). Both fixing rings (301) are penetrated and arranged on the outer side of the blood sampling hose (2). The tie band (302) penetrates the tightening pad (303), and the upper surface of the tightening pad (303) is fixedly connected to the concave gasket (304), and the middle of the concave gasket (304) is threadedly connected to the threaded column (305), and the lower end of the threaded column (305) is penetrated and arranged on the lower surface of the tightening pad (303); The rear end of the intravenous needle (1) is provided with an anti-needle-puncture mechanism (6), the anti-needle-puncture mechanism (6) comprising a limiting cylinder (601), an anti-needle-puncture cylinder (602) and an anti-slip ring (603), the limiting cylinder (601) being fixedly connected to the outside of the front fixing ring (301), the anti-needle-puncture cylinder (602) being provided through the inside of the limiting cylinder (601), the anti-needle-puncture cylinder (602) being threadedly connected to the limiting cylinder (601), and the anti-needle-puncture cylinder (602) being sleeved on the outside of the intravenous needle (1).
2. The double safety venous blood collection needle according to claim 1, characterized in that: The blood collection hose (2) is provided with an anti-falling mechanism (4) on the outside of one end of the venous needle (1), the anti-falling mechanism (4) comprising a fitting tape (401) and an adhesive tape (402), two fitting tapes (401) are provided, and both fitting tapes (401) are fixedly connected to the blood collection hose (2).
3. The double safety venous blood collection needle according to claim 2, characterized in that: Adhesive tapes are provided on the lower surfaces of the two bonding tapes (401).
4. The double safety venous blood collection needle according to claim 1, characterized in that: An anti-slip ring (603) is arranged on the outer side of the front end of the anti-acupuncture cylinder (602).
5. The double safety venous blood collection needle according to claim 1, characterized in that: The rear end of the blood sampling hose (2) is fixedly connected to a connecting column (5).
6. The double safety venous blood collection needle according to claim 5, characterized in that: The connecting column (5) is fitted on the outside of the rear fixing ring (301), and an annular sleeve (7) is embedded in the rear end of the connecting column (5). A built-in needle (8) is arranged inside the annular sleeve (7), and the front end of the built-in needle (8) penetrates the connecting column (5) and is fixedly connected to the connecting column (5).