Safe blood taking needle capable of preventing back puncture

Abstract

The utility model discloses an anti-back-piercing safe blood taking needle which comprises a protective sleeve, a blood taking needle head, a blood taking tube body and a needle cap, the protective sleeve is sleeved on the blood taking needle head in a matched mode, the blood taking tube body is connected and communicated with the blood taking needle head, and the needle cap is detachably and movably arranged on the protective sleeve in a covering mode. The upper portion and the lower portion of the inner wall of the protective sleeve are each provided with an elastic clamping ring, the elastic clamping rings are movably fixed to the outer side wall of the blood sampling needle in an abutting and clamping mode, a strip-shaped groove formed in the length direction of the protective sleeve is formed in the side wall of the protective sleeve, and a needle wing is arranged on the blood sampling needle and can slide and move along the strip-shaped groove. According to the utility model, not only can the blood taking needle head be smoothly used for puncturing and blood taking, but also the needle head part of the blood taking needle can be sleeved in the protective tube sleeve after the blood taking is finished, and is tightened and fixed in the protective tube sleeve, so that the needle head is prevented from being exposed, the safety of a user is better protected, and the operation is safer and more reliable; and the use is simpler and quicker.

Description

Technical Field

[0001] The utility model relates to the design and application field of blood collection needles, and more specifically to a safety blood collection needle with anti-backstab function. Background Art

[0002] A blood collection needle is a medical device for collecting blood samples, usually consisting of a needle and a syringe tube. The needle is used to puncture the patient's skin and blood vessels to obtain blood samples for various clinical tests and diagnoses. When medical staff use a blood collection needle for blood collection, after removing the protective cap, they perform puncture blood collection. After the puncture is completed, the protective cap needs to be put back on the needle to prevent the needle from being exposed and causing needle stick injuries. However, when medical staff put the cap back on the needle, accidents are likely to occur, and they may be stabbed by the needle, resulting in injury and infection to the medical staff, presenting a great safety hazard.

[0003] To solve the above problems, technicians in this field have designed various anti-stab blood collection needles. For example, in a Chinese patent: a catapult anti-stab blood collection needle, the authorization announcement number is CN216294887U. This patent document discloses the specific structure and usage method of the existing anti-stab blood collection needle. This blood collection needle can pop out the first protective sleeve and cover the needle through the setting of elastic pieces and slots, avoiding the exposure of the needle and preventing the needle from stabbing medical staff.

[0004] This technical solution further improves and perfects the structure of the blood collection needle on the basis of the existing anti-stab blood collection needle structure. It can not only enable the blood collection needle to smoothly perform puncture blood collection, but also, after blood collection is completed, the needle head of the blood collection needle can be sleeved back into the protective sleeve and tightly fixed in the protective sleeve, avoiding the exposure of the needle, better protecting the safety of users, and being more safe and reliable in operation and simpler and faster in use. Summary of the Utility Model

[0005] The utility model discloses a safety blood collection needle with anti-backstab function, and its main purpose is to overcome the above-mentioned deficiencies and drawbacks existing in the prior art.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A safety blood collection needle with anti-backstab function includes a protective sleeve, a blood collection needle head, a blood collection tube body, and a needle cap. The protective sleeve is sleeved on the blood collection needle head in a matching manner. The blood collection tube body is connected and communicated with the blood collection needle head. The needle cap is detachably and movably covered on the protective sleeve. Elastic snap rings are respectively arranged at the upper and lower parts of the inner wall of the protective sleeve, and the elastic snap rings are movably abutted and fixed against the outer side wall of the blood collection needle head. A strip-shaped groove is opened on the side wall of the protective sleeve along its length direction. A needle wing is arranged on the blood collection needle head, and the needle wing can slide along the strip-shaped groove.

[0008] Furthermore, the length of the blood collection needle is less than the length of the protective sleeve.

[0009] Furthermore, the needle wing is any one of a single-headed needle wing or a double-headed needle wing.

[0010] Furthermore, the number of the strip grooves is any one of a single strip or a double strip.

[0011] Furthermore, retaining rings are respectively arranged at the upper and lower ports of the protective sleeve, and the retaining rings are movably abutted in cooperation with the blood collection needle.

[0012] Furthermore, grip stripes are arranged on the outer side wall of the protective sleeve.

[0013] Furthermore, the outer diameter of the middle pipe wall of the blood collection needle is greater than the outer diameters of the upper and lower pipe walls.

[0014] From the above description and explanation of the present utility model, it can be seen that compared with the prior art, the advantages of the present utility model are as follows:

[0015] Advantage 1: By providing the protective sleeve, the elastic snap ring in the protective sleeve can be used to smoothly push out or retract the blood collection needle. After the blood collection needle is pushed out, the blood collection needle can be smoothly punctured for blood collection. After the blood collection needle is retracted, the blood collection needle can be tightly fixed in the protective sleeve to prevent its needle tip from hurting the user, making it safer and more convenient to use.

[0016] Advantage 2: By arranging the grip stripes on the outer side wall of the protective sleeve, the grip use of the protective sleeve can be improved, avoiding slipping and further improving safety.

[0017] Advantage 3: By arranging the retaining rings at the upper and lower ports of the protective sleeve, the blood collection needle can be prevented from slipping out of the protective sleeve, making the structure more reasonable and practical and safer to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present utility model.

[0019] Figure 2 is a schematic structural diagram of the present utility model when in use.

[0020] Figure 3 is a schematic structural diagram of the protective sleeve of the present utility model.

[0021] Figure 4 is a schematic structural diagram of the blood collection needle of the present utility model.

[0022] Figure 5This is a schematic structural diagram of the needle cap of the present utility model.

[0023] Among them, there are a protective sleeve 1, an elastic snap ring 11, a strip groove 12, a retaining ring 13, a grip stripe 14, a blood collection needle 2, a needle wing 21, a blood collection tube body 3, and a needle cap 4. Specific embodiments

[0024] The following further describes and illustrates the specific embodiments of the present utility model with reference to the accompanying drawings.

[0025] As Figures 1 to 5 shown, a safety blood collection needle with anti-backstabbing includes a protective sleeve 1, a blood collection needle 2, a blood collection tube body 3, and a needle cap 4. The protective sleeve 1 is fitted and sleeved on the blood collection needle 2. The blood collection tube body 3 is connected and communicated with the blood collection needle 2. The needle cap 4 is detachably and movably covered on the protective sleeve 1. Elastic snap rings 11 are respectively arranged at the upper and lower parts of the inner wall of the protective sleeve 1. The elastic snap rings 11 are movably abutted and fixed against the outer side wall of the blood collection needle 2. The outer diameter of the middle tube wall of the blood collection needle 2 is larger than the outer diameters of the upper and lower tube walls. The elastic snap rings 11 are movably abutted and fitted at the middle tube wall of the blood collection needle 2. By providing the protective sleeve 1 and using the elastic snap rings 11 inside the protective sleeve 1, the blood collection needle 2 can be smoothly pushed out or retracted. After the blood collection needle is pushed out, the blood collection needle 2 can be smoothly punctured for blood collection. After the blood collection needle 2 is retracted, the blood collection needle 2 can be tightly fixed in the protective sleeve 1 to prevent its needle tip from hurting the user, making it safer and more convenient to use.

[0026] As Figures 1 to 5 shown, a strip groove 12 is provided on the side wall of the protective sleeve 1 along its length direction. A needle wing 21 is provided on the blood collection needle 2. The needle wing 21 can slide along the strip groove 12. The needle wing 21 is a single-headed needle wing, and the number of the strip grooves is single. Retaining rings 13 are respectively arranged at the upper and lower ends of the protective sleeve 1. The retaining rings 13 are movably abutted and arranged in cooperation with the blood collection needle 2 to prevent the blood collection needle 2 from slipping off from the protective sleeve. Grip stripes 14 are arranged on the outer side wall of the protective sleeve 1, which can improve the grip use of the protective sleeve 1 and avoid slipping, further improving safety.

[0027] During use:

[0028] When puncture blood collection is required: First, remove the needle cap 4 from the protective sleeve 1. Hold the protective sleeve 1 with one hand and hold the wing 21 of the blood collection needle 2 with the other hand. Then, forcefully push the blood collection needle 2 upward so that the blood collection needle 2 is separated from the elastic snap ring 11 in the middle and lower part of the protective sleeve 1. After the blood collection needle 2 is released from the tightening, it slides upward, and the tip of the blood collection needle 2 exposes from the protective sleeve 1. And when it moves to the upper part of the protective sleeve 1, the elastic snap ring 11 in the upper part of the protective sleeve 1 re-abuts and tightly binds to the tube wall of the blood collection needle 2 to fix the blood collection needle 2. Then, medical staff can normally use the blood collection needle 2 for puncture blood collection.

[0029] When recycling the blood collection needle 2 after blood collection is completed: First, hold the protective sleeve 1 with one hand and hold the wing 21 of the blood collection needle 2 with the other hand. Then, apply force and slide downward so that the blood collection needle 2 is separated from the elastic snap ring 1 in the upper part of the protective sleeve 1. After the blood collection needle 2 is released from the tightening, it can slide downward, and the tip of the blood collection needle 2 enters the protective sleeve 1. And when the blood collection needle 2 moves to the lower part of the protective sleeve 1, the elastic snap ring 11 in the lower part of the protective sleeve 2 re-abuts and tightly binds to the tube wall of the blood collection needle 2 to protect and fix the blood collection needle 2. Finally, medical staff cover the needle cap 4 back onto the protective sleeve 1 to complete the recycling and protection of the blood collection needle 2.

[0030] The above is only the specific implementation manner of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantive improvement made to the present utility model using this concept should belong to the act of infringing the protection scope of the present utility model.

Claims

1. A safety blood collection needle that prevents back stabbing, characterized in that: It includes a protective sleeve, a blood collection needle, a blood collection tube body, and a needle cap. The protective sleeve is fitted and sleeved on the blood collection needle. The blood collection tube body is connected and communicated with the blood collection needle. The needle cap is detachably and movably covered on the protective sleeve. Elastic snap rings are respectively arranged at the upper and lower parts of the inner wall of the protective sleeve. The elastic snap rings are movably abutted and fixed against the outer side wall of the blood collection needle. A strip-shaped groove is formed in the side wall of the protective sleeve along its length direction. A needle wing is arranged on the blood collection needle, and the needle wing can slide along the strip-shaped groove.

2. The safety blood collection needle for preventing back stabbing according to claim 1, wherein: The length of the blood collection needle is less than the length of the protective sleeve.

3. The safety blood collection needle for preventing back stabbing according to claim 1, characterized in that: The needle wing is any one of a single-headed needle wing or a double-headed needle wing.

4. The safety blood collection needle for preventing back stabbing according to claim 1, characterized in that: The number of the strip-shaped grooves is any one of a single strip or a double strip.

5. The safety blood collection needle against back stabbing according to claim 1, characterized in that: Blocking rings are respectively arranged at the upper and lower port parts of the protective sleeve, and the blocking rings are arranged in a manner of being movably blocked and abutted with the blood collection needle.

6. The safety blood collection needle for preventing back stabbing according to claim 1, characterized in that: Grip stripes are arranged on the outer side wall of the protective sleeve.

7. The safety blood collection needle against back stabbing according to claim 1, characterized in that: The outer diameter of the middle tube wall of the blood collection needle is larger than the outer diameters of the upper and lower tube walls.

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