CN108433733A - Blood taking needle - Google Patents

Abstract

The invention provides a blood collection needle, which comprises a base, a needle tube seat, a protective cover and a needle tube cover. The base includes a base upper cover and a base lower cover. The needle tube, the needle tube sheath is set outside the needle tube, the needle tube seat is covered with a spring, the protective sleeve is set outside the needle tube seat, the first end of the protective cover is in contact with the spring, the protective cover is set in the upper cover of the base and the lower cover of the base, the protective cover The end close to the base is provided with a block, and the protective cover is provided with an elastic button, which abuts against the base, and the upper cover of the base is provided with a limit mechanism, press the elastic button, the elastic button is separated from the base, and the protective cover recovers elastic deformation in the spring Under the action of sliding toward the end away from the base, until the block is stuck between the limit mechanism and the base, and the protective cover completely wraps the needle tube. The lancet has the effect of one-time use, has anti-acupuncture effect, and has higher safety.

Description

Lancet

technical field

The invention relates to the technical field of medical equipment, in particular to a blood collection needle.

Background technique

Blood collection is one of the essential items when performing physical examination or treatment in a hospital. Blood collection requires the use of a venous blood collection device. Currently, the existing venous blood collection devices on the market are generally composed of a plug puncture needle, a catheter, and a venipuncture needle. Pull out the sheath, and after the medical staff completes the blood collection, the needle tip of the venous blood collection needle is exposed.

After the blood collection is completed, because the needle tip is exposed and there is no protective measure, the medical staff may be careless in the operation, and they are easily stabbed by the needle tip of the contaminated venipuncture needle, causing cross-infection of the virus. Infectious diseases, the consequences are more serious. In clinical practice, accidental acupuncture is a long-standing and unavoidable problem. Since there is no safety device or self-destruction device, the blood collection needle after blood collection may be recycled and reused by criminals.

It is also an urgent demand in the market to design a needle-proof safety blood collection needle that can protect the needle tip, avoid accidental stabbing, and prevent reuse, which is beneficial to the protection of medical staff and users.

Contents of the invention

In view of the above situation, it is necessary to provide a disposable blood collection needle with anti-needle stick effect to improve safety.

The present invention provides a blood collection needle, including a base, a needle tube seat, a protective cover and a needle tube cover, the base includes a base upper cover and a base lower cover, and the needle tube base is installed on the base upper cover and the base lower cover In the cavity formed, the needle tube seat is connected to the needle tube, the needle tube sleeve is sleeved outside the needle tube, a spring is sleeved on the needle tube base, the protective sleeve is sleeved outside the needle tube base, and the protective sleeve The first end of the first end is in contact with the spring, the protective sleeve is arranged in the upper cover of the base and the lower cover of the base, the end of the protective sleeve close to the base is provided with a block, and the protective sleeve is provided with a There is an elastic button, the elastic button abuts against the base, the upper cover of the base is provided with a limit mechanism, press the elastic button, the elastic button is separated from the base, and the protective cover is placed on the spring Under the effect of recovering elastic deformation, slide toward the end away from the base until the block is locked between the limiting mechanism and the base, and the protective cover completely wraps the needle tube.

According to the above-mentioned blood collection needle, before use, the needle tube is protected by the needle tube cover to ensure hygiene. When in use, the needle tube cover is first pulled out to expose the needle tube, and then the needle tip of the needle tube is inserted into the venous blood vessel, and the blood is drawn. After the completion, withdraw the needle tube from the venous blood vessel, and then press the elastic button, and the protective cover is fired under the action of the elastic deformation of the spring, so that the protective cover slides toward the end away from the base until the locking block is set between the limit mechanism and the base. At this time, the length of the protective cover can completely wrap the needle tube, which can protect the needle tip and avoid accidentally stabbing people. Moreover, due to the existence of the limit mechanism, the protective cover can no longer slide backwards. At the same time, due to the existence of the base, the protective cover cannot Sliding forward again, therefore, can no longer carry out secondary blood collection, realizes the effect of one-time use, can prevent the product from being used again, and effectively improves safety.

In addition, the blood collection needle proposed by the present invention can also have the following additional technical features:

Further, the needle hub is a hollow structure, the needle hub includes a needle hub main body, the first end of the needle hub main body is connected to a sleeve, and the needle sleeve is sleeved on the sleeve, so A support ring is provided at the second end of the main body of the needle tube base, and a connecting portion is provided between the support ring and the main body of the needle tube base.

Further, the diameter of the support ring is larger than the diameter of the connecting part, and the end of the upper cover of the base and the lower cover of the base are clamped between the support ring and the main body of the needle tube base , and respectively abut against the connecting parts.

Further, the protective cover includes a casing with a cavity structure and a support bar provided on the casing, the support strip is arranged in parallel with the casing, and the support bar extends obliquely upwards out of the elastic button, the clamping block is connected with the sleeve body.

Further, the sleeve is a hollow cylinder, and the block is a hollow rectangular structure.

Further, the ends of the upper cover of the base and the lower cover of the base are provided with openings, and the size of the openings is larger than the size of the end of the sleeve facing the base, and smaller than the size of the clamping block. .

Further, a blood collection needle handle is provided on the base.

Further, the lancet handle is fan-shaped.

Further, the base is provided with anti-slip lines.

Further, the upper cover of the base and the lower cover of the base are clamped together by elastic clips.

Description of drawings

Fig. 1 is a schematic structural diagram of a blood collection needle provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram of the structure of the blood collection needle in Fig. 1 before use (excluding the blood collection catheter and the blood collection tube puncture needle);

Fig. 3 is a schematic diagram of the explosion structure of Fig. 2;

Fig. 4 is a schematic structural view of the needle tube seat in the blood collection needle provided by the embodiment of the present invention;

Fig. 5 is a schematic structural view of the protective cover in the blood collection needle provided by the embodiment of the present invention;

Fig. 6 is a schematic structural diagram of a base in a blood collection needle provided by an embodiment of the present invention;

Fig. 7 is the sectional view of Fig. 2;

Fig. 8 is a schematic diagram of the structure of the blood collection needle in Fig. 1 after use (excluding the blood collection catheter and the blood collection tube puncture needle);

Fig. 9 is a schematic structural diagram of the explosion structure of Fig. 8;

FIG. 10 is a cross-sectional view of FIG. 8 .

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. Several embodiments of the invention are shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

It should be noted that when an element is referred to as being “fixed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "upper," "lower," and similar expressions are for descriptive purposes only and do not indicate or imply the device or Elements must have certain orientations, be constructed and operate in certain orientations, and therefore should not be construed as limitations on the invention.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to FIG. 1 to FIG. 10 , the blood collection needle provided by the embodiment of the present invention includes a base 10 , a needle tube holder 20 , a protective cover 30 , a needle tube cover 40 , a needle tube 50 , a blood collection catheter 60 and a blood collection tube puncture needle 70 .

The base 10 includes a base upper cover 101 and a base lower cover 102 , and the needle tube holder 20 is installed in a cavity formed by the base upper cover 101 and the base lower cover 102 .

The needle tube holder 20 is connected with a needle tube 50 , and the needle tube cover 40 is sleeved on the outside of the needle tube 50 for containing the needle tube 50 .

A spring 80 is sheathed on the needle tube base 20, the protective sheath 30 is sleeved outside the needle tube base 20, the first end of the protective sheath 30 is in contact with the spring 80, and the protective sheath 30 is set on the In the base upper cover 101 and the base lower cover 102, the end of the protective cover 30 close to the base 10 is provided with a block 31, and the protective cover 30 is provided with an elastic button 32, for example, an elastic plastic button can be used. The elastic button 32 abuts against the base 10. It should be pointed out that the corresponding position on the base 10 is provided with a through hole 130 for the elastic button 32 to pass through, so that the elastic button 32 is exposed, which is convenient for the operator to press the elastic button. 32. The base upper cover 101 is provided with a limit mechanism 103, press the elastic button 32, the elastic button 32 is separated from the base 10, and the protective cover 30 moves away from the elastic deformation of the spring 80. One end of the base 10 slides until the clamping block 31 is clamped between the limiting mechanism 103 and the base 10, and at this time the protective cover 30 completely wraps the needle tube 50 (specifically, it can be determined according to the needle tube 50 to design the length of the protective sheath 30 to ensure that the protective sheath 30 can completely wrap the needle tube 50).

In this embodiment, the needle tube seat 20 is a hollow structure for the needle tube 50 and the blood collection catheter 60 to pass through. It should be pointed out that the end of the base 10 is provided with a corresponding through hole for the passage of the blood collection catheter 60. Since the structures of the through hole, the blood collection catheter 60 and the blood collection tube puncture needle 70 are all general structures, therefore, no further details will be given here. I will repeat. In addition, it should be pointed out that the blood collection catheter 60 can be omitted according to the actual situation, that is, directly connecting the blood collection tube puncture needle 70 to the base 10 for blood collection can also achieve the technical effect of the present invention. The inclusion of the blood collection catheter 60 is not limiting.

The needle hub 20 specifically includes a needle hub body part 21, the first end of the needle hub body part 21 is connected to the sleeve part 22, the needle hub 40 is sleeved on the tube sleeve part 22, and the needle hub A support ring 23 is provided at the second end of the main body part 21 , and a connecting part 24 is provided between the support ring 23 and the main body part 21 of the needle tube base.

The diameter of the support ring 23 is larger than the diameter of the connecting portion 24, and the end of the base upper cover 101 and the end of the base lower cover 102 are clamped on the support ring 23 and the main body of the needle tube base 21, and the ends of the base upper cover 101 and the base lower cover 102 abut against the connecting portion 24 respectively.

The protective cover 30 specifically includes a cover body 301 with a cavity structure and a support bar 302 arranged on the cover body 301, the support bar 302 is arranged parallel to the cover body 301, and the support bar 302 is inclined upward The elastic button 32 is extended, and the locking block 31 is connected with the sleeve body 301 .

The sleeve body 301 is a hollow cylinder, and the clamping block 31 is a hollow rectangular structure.

The ends of the base upper cover 101 and the base lower cover 102 are provided with an opening 104, the size of the opening 104 is larger than the size of the end of the sleeve 301 facing the base 10, and smaller than the card. The size of the block 31, through this structural design, when the protective cover 30 slides over the limit mechanism 103, the block 31 is stuck in the position of the opening 104, so that the protective cover 30 can no longer slide forward, and at the same time, due to the limit The existence of the mechanism 103, the limit mechanism 103 cooperates with the protective cover 30, so that the protective cover 30 can no longer slide backward, therefore, the protective cover 30 can be fixed outside the needle tube 50, and the length of the protective cover 30 can ensure that the column needle tube 50 is completely wrapped. It can prevent the needle tube 50 from being exposed, and at the same time, the needle tube 50 cannot be used again.

In addition, in order to improve the convenience of use, in this embodiment, the base 10 is provided with a blood collection needle handle 90, for example, the blood collection needle handle 90 can be specifically arranged on the base cover 101. When using the product, it is convenient to hold the product, which is convenient for blood collection. Specifically, the lancet handle 90 may be fan-shaped.

The base 10 is provided with anti-slip lines 100, specifically, anti-slip lines 100 can be set on the base upper cover 101 and the base lower cover 102. It conforms to the imitation of ergonomics and is more suitable for the fingers of the human body. Some small cylinders can also be arranged on the anti-slip pattern 100 to increase the friction between the skin and the product and prevent hand slipping.

In this embodiment, the base upper cover 101 and the base lower cover 102 are clamped together by an elastic clip, and the elastic clip specifically includes a hook 110 provided on the base upper cover 101, and a hook 110 provided under the base. The clamping hole 120 on the cover 102 cooperates with the clamping hole 120 through the clamping hook 110 to realize the clamping connection between the base upper cover 101 and the base lower cover 102 , which has the advantage of convenient assembly.

The use process of the blood collection needle provided in this embodiment is as follows: when in use, first pull out the needle tube cover 40, pinch the blood collection needle handle 90 with your fingers, and insert the needle tip of the needle tube 50 into the venous blood vessel. Pinch the anti-slip pattern 100 with the index finger respectively, withdraw the needle tube 40 from the venous vessel, and then press the elastic button 32, the protective cover 30 is fired under the elastic force of the spring 80 until the limit mechanism 103 cooperates with the protective cover 30 to fix the protective cover 30 At the end of the needle tube holder 20 away from the base 10, the protective cover 30 wraps the needle tube 50 around the post.

Therefore, according to the blood collection needle of the embodiment, before use, the needle tube is protected by the needle tube cover to ensure hygiene. When in use, the needle tube cover is first pulled out to expose the needle tube, and then the needle tip of the needle tube is inserted into the venous blood vessel After drawing blood, withdraw the needle tube from the venous vessel, then press the elastic button, the protective cover will be fired under the action of the elastic deformation of the spring, and the protective cover will slide towards the end away from the base until the block is set between the limit mechanism and the Between the bases, at this time, the length of the protective cover can completely wrap the needle tube, which can protect the needle tip and avoid accidentally stabbing people, and because of the existence of the limit mechanism, the protective cover can no longer slide backwards. At the same time, due to the existence of the base, The protective cover can no longer be slid forward, so blood collection can no longer be performed again, which realizes the effect of one-time use, can prevent the product from being used again, and effectively improves safety.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. a kind of blood taking needle, which is characterized in that including pedestal, needle tubing seat, protective case and needle tubing set, the pedestal includes on pedestal Lid and bottom seat lower cover, the needle tubing seat are mounted in the vessel that the base upper cover and the pedestal lower cover form, the needle tubing Seat connection needle tubing, the needle tubing set are set in outside the needle tubing, spring are arranged on the needle tubing seat, the protective case is set in Outside the needle tubing seat, the first end of the protective case is contacted with the spring, and the protective case is set to the base upper cover and institute It states in pedestal lower cover, the protective case is equipped with fixture block close to one end of the pedestal, and the protective case is equipped with flexible keypad, institute Flexible keypad and the base abutment are stated, the base upper cover is equipped with position-limit mechanism, presses the flexible keypad, the elasticity Button is detached with the pedestal, and the protective case is under the action of the spring restores elastic deformation towards one far from the pedestal End sliding, until the fixture block is fastened between the position-limit mechanism and the pedestal, and the protective case is fully wrapped around described Needle tubing.

2. blood taking needle according to claim 1, which is characterized in that the needle tubing seat is hollow-core construction, the needle tubing seat packet Needle tubing seat main part, the first end connecting pipe box portion of the needle tubing seat main part are included, the needle tubing set is socketed in the pipe sleeve portion On, the second end of the needle tubing seat main part is equipped with support ring, the company of being equipped between the support ring and the needle tubing seat main part Socket part.

3. blood taking needle according to claim 2, which is characterized in that the diameter of the support ring is more than the straight of the interconnecting piece The end of diameter, the end of the base upper cover and the pedestal lower cover be fastened on the support ring and the needle tubing seat main part it Between, and respectively with the interconnecting piece against.

4. blood taking needle according to claim 1, which is characterized in that the protective case include have cavity structure body and Support bar on the body, the support bar are arranged in parallel with the body, and the support bar, which tilts upward, to be extended The flexible keypad, the fixture block are connect with the body.

5. blood taking needle according to claim 4, which is characterized in that the body is hollow cylinder, and the fixture block is sky The rectangular configuration of the heart.

6. blood taking needle according to claim 5, which is characterized in that the end of the base upper cover and the pedestal lower cover is set There is opening portion, the size of the opening portion is more than size of the body towards one end of the pedestal, and is less than the fixture block Size.

7. blood taking needle according to claim 1, which is characterized in that the pedestal is equipped with blood sampling needle handle.

8. blood taking needle according to claim 7, which is characterized in that the blood sampling needle handle is in sector.

9. blood taking needle according to claim 1, which is characterized in that the pedestal is equipped with anti-skid chequer.

10. blood taking needle according to claim 1, which is characterized in that the base upper cover and the pedestal lower cover pass through bullet Property fastener is connected together.