Negative pressure safety blood taking needle

Abstract

The utility model discloses a negative pressure safety blood taking needle which comprises a needle tube. The base is fixedly arranged at the bottom end of the needle tube, and the needle tube is communicated with an inner cavity of the base; strip-shaped holes are formed in one side of the needle tube and one side of the base, and the needle handle is connected with the strip-shaped holes in a matched and inserted mode; the connecting end is fixedly arranged on one side of the top end of the needle handle, and the connecting end extends out of the upper surface of the needle tube; the blood taking needle is arranged at the top end of the connecting end; one end of the connecting tube is arranged on one side of the bottom end of the needle handle. According to the negative-pressure safety blood taking needle, the fixing assembly and the needle sleeve are arranged, so that the situation that medical staff are punctured before and after blood taking of the blood taking needle can be avoided, the protection performance is high, the negative-pressure blood taking tube and the rubber plug puncture needle can be conveniently pulled out through the protection assembly, the rubber plug puncture needle can be protected, and the safety of the blood taking needle is improved. The rubber plug puncture needle is prevented from being contacted with the outside, so that the risk of bacterial infection is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of venous blood collection, in particular to a negative pressure safety blood collection needle. Background Art

[0002] A blood collection needle is used to collect blood samples during medical examinations. Generally, a vacuum blood collection needle is composed of three parts: a vacuum blood collection tube, a blood collection needle (including a straight needle and a scalp blood collection needle), and a needle holder. There are many kinds of blood collection needles on the market, but the blood collection needles lack protective devices before and after use, which can easily cause accidental injuries to medical staff. The vacuum blood collection tube is pulled out tightly after each insertion with the puncture needle, which affects the speed of continuous replacement of the vacuum blood collection tube. In addition, the vacuum blood collection tube is exposed to the outside world for a long time when it is replaced with the puncture needle for blood transfusion, which can easily cause bacterial contamination and affect the quality of the blood sample. Utility Model Content

[0003] The utility model aims to provide a negative pressure safety blood collection needle to solve the problems in the prior art that the blood collection needle lacks a protective device before and after use, which is easy to cause accidental injury to medical staff, and the vacuum blood collection tube is easily exposed to the outside world for a long time when it is replaced with a puncture needle for blood transfusion, which is easy to cause bacterial contamination and affect the quality of the blood sample.

[0004] To achieve the above purpose, the utility model provides the following technical solutions: a negative pressure safety blood collection needle, comprising:

[0005] Needle;

[0006] A base, fixedly arranged at the bottom end of the needle tube, and the needle tube is communicated with the inner cavity of the base;

[0007] The needle handle, one side of the needle tube and the base are both provided with a strip-shaped hole, and the needle handle is adapted to be plugged into the strip-shaped hole;

[0008] A connecting end, fixedly disposed on one side of the top end of the needle handle, and the connecting end extends out of the upper surface of the needle tube;

[0009] A blood collection needle, arranged at the top end of the connecting end;

[0010] A connecting tube, one end of which is arranged on one side of the bottom end of the needle handle;

[0011] A needle sleeve, sleeved with the blood collection needle;

[0012] A fixing assembly, arranged in the inner cavity of the base;

[0013] A fixed needle holder connected to the other end of the connecting tube;

[0014] A rubber plug puncture needle is fixedly arranged at the top of the inner cavity of the fixed needle holder and communicated with the inner cavity of the connecting tube;

[0015] The protection component is arranged in the inner cavity of the fixed needle holder.

[0016] Preferably, a push handle is fixedly provided at the bottom end of the base, and the push handle and the bottom end of the base are in a through shape.

[0017] Preferably, the bottom end of the needle sleeve is adapted to be fitted to the connecting end.

[0018] Preferably, the fixing assembly comprises: a protrusion, a plurality of protrusions are circumferentially arranged at the bottom end of the inner cavity of the needle sleeve; a groove, a plurality of grooves are opened on the outer wall of the connecting end, and the protrusions are adapted to be plugged into the inner cavity of the groove; a clamping block, clamping blocks are fixedly arranged at both front and rear ends of one side of the inner cavity of the base, and one side of the clamping block is located directly below the needle handle.

[0019] Preferably, the inner top end of the clamp block is in an upwardly inclined arc shape, and the gap between the two clamp blocks is smaller than the thickness of the needle handle.

[0020] Preferably, the protective assembly includes: a spring, which is fixedly arranged at the top end of the inner cavity of the rubber plug puncture needle, and the rubber plug puncture needle is plugged into the spring; a top plate, which is fixedly arranged at the bottom end of the spring; a sleeve, which is fixedly arranged at the top end of the top plate, and the sleeve and the bottom end of the top plate are through-connected, the sleeve is sleeved with the outer wall of the rubber plug puncture needle, and the sleeve is located inside the spring.

[0021] Compared with the prior art, the beneficial effects of the utility model are as follows: the negative pressure safety blood collection needle is provided with a fixing component and a needle cover to prevent the blood collection needle from causing puncture injuries to medical staff before and after blood collection, and has high protection. By providing a protective component, the negative pressure blood collection tube and the rubber stopper puncture needle can be easily removed, and the rubber stopper puncture needle can be protected to prevent the rubber stopper puncture needle from contacting the outside world, thereby reducing the risk of bacterial infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 This is a front cross-sectional view of the needle tube of the utility model;

[0024] Figure 3 This is a schematic diagram of the assembly structure of the needle tube of the utility model;

[0025] Figure 4 This is a front sectional view of the fixed needle holder of the utility model.

[0026] In the figure: 1, needle tube, 2, base, 3, needle handle, 4, strip hole, 5, connecting end, 6, blood collection needle, 7, connecting tube, 8, needle sleeve, 9, fixing component, 91, protrusion, 92, groove, 93, clamping block, 10, fixed needle holder, 11, rubber plug puncture needle, 12, protective component, 121, spring, 122, top plate, 123, sleeve, 13, push handle. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-4 The utility model provides a technical solution: a negative pressure safety blood collection needle, comprising: a needle tube 1, a base 2, a needle handle 3, a strip hole 4, a connecting end 5, a blood collection needle 6, a connecting tube 7, a needle sleeve 8, a fixing component 9, a fixing needle holder 10, a rubber plug puncture needle 11 and a protective component 12;

[0029] The base 2 is fixedly set at the bottom end of the needle tube 1, and the inner cavity of the needle tube 1 and the base 2 are communicated. A strip hole 4 is opened on one side of the needle tube 1 and the base 2, and the needle handle 3 is adapted to be plugged into the strip hole 4. The connecting end 5 is fixedly set on the top side of the needle handle 3, and the connecting end 5 extends out of the upper surface of the needle tube 1. The blood collection needle 6 is set at the top of the connecting end 5, one end of the connecting tube 7 is set on the bottom side of the needle handle 3, the needle sleeve 8 is sleeved with the blood collection needle 6, the fixing component 9 is set in the inner cavity of the base 2, the fixed needle holder 10 is connected to the other end of the connecting tube 7, the rubber plug puncture needle 11 is fixedly set at the top of the inner cavity of the fixed needle holder 10 and communicates with the inner cavity of the connecting tube 7, and the protective component 12 is set in the inner cavity of the fixed needle holder 10.

[0030] As a preferred solution, further, a push handle 13 is fixedly provided at the bottom end of the base 2, and the push handle 13 and the bottom end of the base 1 are connected, so that the push handle 13 is provided to facilitate pushing the needle handle 3 to move downward.

[0031] As a preferred solution, further, the bottom end of the needle sleeve 8 is adapted to fit the connecting end 5 , so as to facilitate fixing the needle sleeve 8 to the outer wall of the connecting end 5 .

[0032] As a preferred solution, further, the fixing assembly 9 includes: a protrusion 91, a groove 92 and a clamping block 93;

[0033] In order to fix the needle sleeve 8, a plurality of protrusions 91 are provided at the bottom end of the inner cavity of the needle sleeve 8 along the circumferential direction, and a plurality of grooves 92 are provided on the outer wall of the connecting end 5, and the protrusions 91 and the inner cavities of the grooves 92 are adapted to be plugged in;

[0034] In order to fix one side of the needle handle 3 , clamping blocks 93 are fixedly provided at both the front and rear ends of one side of the inner cavity of the base 2 , and one side of the clamping block 93 is located directly below the needle handle 3 .

[0035] As a preferred embodiment, further, the inner top of the clamp block 93 is an upwardly inclined arc, and the gap between the two clamp blocks 93 is smaller than the thickness of the needle handle 3. When one side of the needle handle 3 is inserted into the two clamp blocks 93, the clamp blocks 93 on both sides are clamped and fixed under the elastic deformation of the clamp blocks 93.

[0036] As a preferred solution, further, the protection assembly 12 includes: a spring 121, a top plate 122 and a sleeve 123;

[0037] In order to protect the plug puncture needle 11, the spring 121 is fixedly arranged at the top of the inner cavity of the plug puncture needle 11, and the plug puncture needle 11 is plugged into the spring 121, and the top plate 122 is fixedly arranged at the bottom end of the spring 121. Under the push of the spring 121, the negative pressure blood collection tube is separated from the plug puncture needle 11, which is convenient for continuous replacement of the negative pressure blood collection tube for blood collection. The sleeve 123 is fixedly arranged at the top of the top plate 122, and the sleeve 123 and the bottom end of the top plate 122 are through-connected. The sleeve 123 is sleeved with the outer wall of the plug puncture needle 11, and the sleeve 123 is located in the spring 121. The sleeve 123 can protect the plug puncture needle 11 and can limit the plug puncture needle 11. The plug puncture needle 11 can be limited by providing the sleeve 123.

[0038] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process. The specific work is as follows.

[0039] When in use, the needle sleeve 8 is pulled upward to disengage the protrusion 91 from the groove 92, so that the needle sleeve 8 can be removed. When the needle handle 3 is manipulated, the blood collection needle 6 is inserted into the patient's blood vessel, the negative pressure blood collection tube is inserted into the fixed needle holder 10, and the top plate 122 is pushed to compress the spring 121 until the rubber plug puncture needle 11 is inserted into the negative pressure blood collection tube, so that the blood enters the negative pressure blood collection tube through the connecting tube 7 and the rubber plug puncture needle 11. When the negative pressure blood collection tube is pulled out and replaced, the spring 121 pushes the negative pressure blood collection tube to disengage the rubber plug puncture needle 11, so that the negative pressure blood collection tube is conveniently replaced and blood is collected continuously. After the negative pressure blood collection tube is separated from the rubber plug puncture needle 11, the sleeve 123 is re-sleeved on the outer wall of the rubber plug puncture needle 11 to prevent the rubber plug puncture needle 11 from contacting the outside world, thereby reducing the risk of bacterial infection.

[0040] After the blood collection is completed, the blood collection needle 6 is removed, and the needle handle 3 is pushed downward under the restriction of the strip hole 4 until one side of the needle handle 3 is stuck into the inner side of the clamping block 93, so that the clamping block 93 clamps one side of the needle handle 3 under the elastic deformation of the clamping block 93, so as to receive the blood collection needle 6 into the needle tube 1 and fix it, thereby preventing the blood collection needle 6 from leaking out and injuring medical staff. It has high protection and is conducive to wide promotion.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A negative pressure safety blood collection needle, characterized in that: include: Needle tube (1); A base (2) is fixedly arranged at the bottom end of the needle tube (1), and the needle tube (1) is in communication with the inner cavity of the base (2); A needle handle (3), wherein a strip-shaped hole (4) is provided on one side of the needle tube (1) and the base (2), and the needle handle (3) is adapted to be plugged into the strip-shaped hole (4); A connecting end (5) is fixedly arranged on one side of the top end of the needle handle (3), and the connecting end (5) extends out of the upper surface of the needle tube (1); A blood collection needle (6) is arranged at the top end of the connecting end (5); A connecting tube (7), one end of which is arranged on one side of the bottom end of the needle handle (3); A needle sleeve (8) sleeved with the blood collection needle (6); A fixing assembly (9) arranged in the inner cavity of the base (2); A fixed needle holder (10) connected to the other end of the connecting tube (7); A rubber plug puncture needle (11) is fixedly arranged at the top end of the inner cavity of the fixed needle holder (10) and communicated with the inner cavity of the connecting tube (7); A protection component (12) is arranged in the inner cavity of the fixed needle holder (10).

2. A negative pressure safety blood collection needle according to claim 1, characterized in that: A push handle (13) is fixedly provided at the bottom end of the base (2), and the push handle (13) and the bottom end of the base (2) are in a through-connection shape.

3. A negative pressure safety blood collection needle according to claim 1, characterized in that: The bottom end of the needle sleeve (8) is adaptively coupled to the connecting end (5).

4. A negative pressure safety blood collection needle according to claim 1, characterized in that: The fixing assembly (9) comprises: A convex block (91), wherein a plurality of convex blocks (91) are arranged along the circumferential direction at the bottom end of the inner cavity of the needle sleeve (8); Grooves (92), the outer wall of the connecting end (5) is provided with a plurality of grooves (92), and the protrusions (91) are adapted to be plugged into the inner cavities of the grooves (92); A clamping block (93) is fixedly provided at both the front and rear ends of one side of the inner cavity of the base (2), and one side of the clamping block (93) is located directly below the needle handle (3).

5. A negative pressure safety blood collection needle according to claim 4, characterized in that: The inner top end of the clamping block (93) is in an upwardly inclined arc shape, and the gap between the two clamping blocks (93) is smaller than the thickness of the needle handle (3).

6. A negative pressure safety blood collection needle according to claim 1, characterized in that: The protection component (12) comprises: A spring (121) is fixedly arranged at the top end of the inner cavity of the rubber plug puncture needle (11), and the rubber plug puncture needle (11) is plugged into the spring (121); A top plate (122) fixedly disposed on the bottom end of the spring (121); The sleeve (123) is fixedly arranged at the top end of the top plate (122), and the sleeve (123) and the bottom end of the top plate (122) are in a through shape. The sleeve (123) is sleeved with the outer wall of the rubber plug puncture needle (11), and the sleeve (123) is located in the spring (121).

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