Disposable blood taking needle

Abstract

The utility model relates to the technical field of medical instruments, and discloses a disposable blood taking needle which comprises a needle tube seat, side wings arranged on the two sides of the needle tube seat, a puncture needle arranged at the front end of the needle tube seat, a hose arranged at the tail end of the needle tube seat, a connecting seat arranged at the end, close to the needle tube seat, of the hose, a tail needle is arranged at the end, away from the hose, of the connecting base and sleeved with a rubber hose, and a guide pipe is arranged at the front end in the rubber hose. According to the disposable blood taking needle, through the arrangement of the guide tube and the limiting clamping ring, the limiting and guiding effects are effectively achieved, it is guaranteed that the tail needle is perpendicularly inserted into a blood taking tube, after the tail needle is pulled out, the rubber hose can effectively rebound and return to the original position, and the situation that the tail needle punctures the side wall of the front end of the rubber hose and enters the blood taking tube is avoided; the rubber hose cannot effectively rebound and return, and the front end of the tail needle is exposed to the outside, so that blood leakage is caused.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a disposable blood collection needle. Background Art

[0002] A blood collection needle refers to a medical device used for collecting blood samples. The blood collection needle at its top is used to puncture blood vessels. The transparent hose at the tail end is connected to a tail needle. The outside of the tail needle is wrapped by a rubber hose and covered with a needle cap, which is used to pierce a vacuum blood collection tube, and the negative pressure in the tube is used to suck blood into the tube.

[0003] During the use of a disposable blood collection needle, since the length of the rubber hose outside the tail needle is generally greater than the length of the tail needle, when inserting the tail needle into the inside of the blood collection tube, it cannot be guaranteed that the tail needle is inserted vertically into the inside of the blood collection tube. When the insertion angle of the tail needle into the blood collection tube is inclined, the tail needle is likely to pierce the side wall of the rubber hose. Furthermore, after the tail needle is pulled out of the blood collection tube, the rubber hose cannot rebound and return to its original position well, which is likely to cause blood leakage. Therefore, a disposable blood collection needle is needed to solve the above problems. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a disposable blood collection needle, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solutions: A disposable blood collection needle includes a needle tube seat. Wings are arranged on both sides of the needle tube seat. A puncture needle is arranged at the front end of the needle tube seat. A hose is arranged at the tail end of the needle tube seat. One end of the hose close to the needle tube seat is clamped with the needle tube seat. A connection seat is arranged at the end of the hose away from the needle tube seat. A tail needle is arranged at the end of the connection seat away from the hose. A rubber hose is sleeved outside the tail needle. A guide tube is arranged at the front end inside the rubber hose.

[0006] Preferably, the front end of the tail needle extends into the inside of the guide tube.

[0007] Preferably, a limit snap ring is arranged on the outside of the end of the guide tube away from the tail needle, and a clamping groove matched with the limit snap ring is formed on the rubber hose.

[0008] Preferably, protrusions are arranged on both sides of the end of the hose close to the needle tube seat.

[0009] Preferably, a limit tube is arranged on the outside of the end of the connection seat close to the hose.

[0010] Preferably, a limit tube is arranged on the outside of the end of the connection seat close to the hose.

[0011] Preferably, a needle head tube is arranged outside the puncture needle.

[0012] Preferably, anti-slip protrusions are arranged on the wings.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. For this disposable blood collection needle, through the arranged guiding tube and limiting snap ring, it effectively plays a role of limiting and guiding, ensuring that the tail needle is vertically inserted into the inside of the blood collection tube. After pulling out the tail needle, the rubber hose can effectively rebound and return to its original position, avoiding the situation that the tail needle pierces through the front side wall of the rubber hose and enters the inside of the blood collection tube. After pulling out the tail needle, the rubber hose cannot effectively rebound and return to its original position, and the front end of the tail needle is exposed to the outside, causing blood leakage.

[0015] 2. For this disposable blood collection needle, through the arranged protrusions, it is convenient to control the connection between the rubber protective sleeve of the hose and the needle tube seat. Through the arranged limiting tube, it can effectively limit the hose inside, avoiding the situation that the blood cannot flow effectively due to the bending at the connection between the hose and the connection seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is one of the overall structural schematic diagrams of the disposable blood collection needle of the utility model;

[0017] Figure 2 is the second of the overall structural schematic diagrams of the disposable blood collection needle of the utility model;

[0018] Figure 3 is the connection structural schematic diagram of the hose and the needle tube seat of the utility model;

[0019] Figure 4 is the partial cross-sectional view of the rubber hose of the utility model;

[0020] Figure 5 is the cross-sectional view of the connection seat of the utility model.

[0021] In the figure: 1. Needle tube seat; 101. Flank; 102. Anti-slip protrusion; 2. Puncture needle; 201. Needle head tube; 3. Hose; 301. Protrusion; 4. Connection seat; 401. Limiting tube; 5. Tail needle; 6. Rubber hose; 7. Guiding tube; 701. Limiting snap ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-5, Disposable blood collection needle, including a needle tube seat 1, with wing flanks 101 provided on both sides of the needle tube seat 1, a puncture needle 2 provided at the front end of the needle tube seat 1, a flexible tube 3 provided at the tail end of the needle tube seat 1. One end of the flexible tube 3 close to the needle tube seat 1 is snap-connected to the needle tube seat 1, and a connection seat 4 is provided at the end of the flexible tube 3 away from the needle tube seat 1. A tail needle 5 is provided at the end of the connection seat 4 away from the flexible tube 3. A rubber hose 6 is sleeved outside the tail needle 5, and a guide tube 7 is provided at the front end inside the rubber hose 6.

[0024] Among them; the front end of the tail needle 5 extends into the inside of the guide tube 7, and a limit snap ring 701 is provided on the outside of the end of the guide tube 7 away from the tail needle 5. A card slot matching with the limit snap ring 701 is provided on the rubber hose 6. When inserting the tail needle 5 into the blood collection tube, through the provided guide tube 7 and limit snap ring 701, it effectively plays a role of limiting and guiding, ensuring that the tail needle 5 is vertically inserted into the inside of the blood collection tube. After pulling out the tail needle 5, the rubber hose 6 can effectively rebound and return to its original position, avoiding the situation that the front side wall of the rubber hose 6 is pierced by the tail needle 5 and enters the inside of the blood collection tube. After pulling out the tail needle 5, the rubber hose 6 cannot effectively rebound and return to its original position, and the front end of the tail needle 5 is exposed to the outside, causing blood leakage.

[0025] Among them; protrusions 301 are provided on both sides of the end of the flexible tube 3 close to the needle tube seat 1. By providing the protrusions 301, it is convenient to control the connection between the flexible tube 3 and the needle tube seat 1 and ensure the effective flow of blood at the connection.

[0026] Among them; a limit tube 401 is provided on the outside of the end of the connection seat 4 close to the flexible tube 3. By providing the limit tube 401, it can effectively limit the flexible tube 3 inside and avoid the situation that the blood cannot flow effectively due to bending at the connection between the flexible tube 3 and the connection seat 4.

[0027] Among them; a needle head tube 201 is provided outside the puncture needle 2, and anti-slip protrusions 102 are provided on the wing flanks 101. By providing the needle head tube 201, initially, it can effectively protect the puncture needle 2. By providing the anti-slip protrusions 102, it can avoid the wing flanks 101 slipping out of the hand.

[0028] Working principle: During the blood collection process, through the provided guide tube 7 and limit snap ring 701, it effectively plays a role of limiting and guiding, ensuring that the tail needle 5 is vertically inserted into the inside of the blood collection tube. After pulling out the tail needle 5, the rubber hose 6 can effectively rebound and return to its original position, avoiding the situation that the front side wall of the rubber hose 6 is pierced by the tail needle 5 and enters the inside of the blood collection tube. After pulling out the tail needle 5, the rubber hose 6 cannot effectively rebound and return to its original position, and the front end of the tail needle 5 is exposed to the outside, causing blood leakage.

[0029] Furthermore, by providing the needle head tube 201, initially, it can effectively protect the puncture needle 2. By providing the anti-slip protrusions 102, it can avoid the wing flanks 101 slipping out of the hand. By providing the protrusions 301, it is convenient to control the connection between the flexible tube 3 and the needle tube seat 1 and ensure the effective flow of blood at the connection.

[0030] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A disposable blood collection needle, characterized in that: The invention comprises a needle tube seat (1), wherein both sides of the needle tube seat (1) are provided with side wings (101), a puncture needle (2) is provided at the front end of the needle tube seat (1), a hose (3) is provided at the rear end of the needle tube seat (1), the hose (3) is clamped with the needle tube seat (1) at one end close to the needle tube seat (1), a connecting seat (4) is provided at one end of the hose (3) away from the needle tube seat (1), a tail needle (5) is provided at one end of the connecting seat (4) away from the hose (3), a rubber hose (6) is provided on the outer sleeve of the tail needle (5), and a guide tube (7) is provided at the front end of the rubber hose (6).

2. The disposable blood collection needle according to claim 1, characterized in that: The front end of the tail needle (5) extends into the interior of the guide tube (7).

3. The disposable blood collection needle according to claim 2, characterized in that: A limit clamp ring (701) is provided on the outer side of one end of the guide tube (7) away from the tail needle (5), and a clamping groove cooperating with the limit clamp ring (701) is provided on the rubber hose (6).

4. The disposable blood collection needle according to claim 1, characterized in that: The hose (3) is provided with protrusions (301) on both sides of one end close to the needle tube seat (1).

5. The disposable blood collection needle according to claim 1, characterized in that: A limiting tube (401) is arranged on the outer side of the connection seat (4) close to one end of the hose (3).

6. The disposable blood collection needle according to claim 1, characterized in that: A needle tube (201) is arranged outside the puncture needle (2).

7. The disposable blood collection needle according to claim 1, characterized in that: The side wings (101) are provided with anti-slip protrusions (102).

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