阅读说明：本技术 一种防止血液凝固的负压采血针 (Negative pressure blood taking needle capable of preventing blood from coagulating ) 是由 郁飞 纪银锁 姚玥 于 2019-09-23 设计创作，主要内容包括：本发明公开了一种防止血液凝固的负压采血针,包括负压弹性球(1)、储血管(2)、采血针(9)、采血针筒(5)和管口抗凝血剂涂层(4),所述负压弹性球(1)、储血管(2)和采血针筒(5)通过螺纹连接,在储血管(2)底部进血孔口附近设有孔口抗凝血剂涂层(4)。同时还采用弹簧结构使得采血针(9)能够从采血针筒(5)内伸缩。本发明通过在储血管(2)内置抗凝血剂的方法解决了病人血液凝固快不利于后续化验的问题,且没有传统二次添加抗凝血剂时污染的风险。同时伸缩的针头结构也防止了操作不当伤害病人的情况。(The invention discloses a negative pressure blood taking needle capable of preventing blood from coagulating, which comprises a negative pressure elastic ball (1), a blood storage tube (2), a blood taking needle (9), a blood taking needle cylinder (5) and a tube opening anticoagulant coating (4), wherein the negative pressure elastic ball (1), the blood storage tube (2) and the blood taking needle cylinder (5) are connected through threads, and an orifice anticoagulant coating (4) is arranged near a blood inlet orifice at the bottom of the blood storage tube (2). Meanwhile, a spring structure is adopted to ensure that the blood taking needle (9) can stretch out and draw back from the blood taking needle cylinder (5). The invention solves the problem that the blood of a patient is fast coagulated and is not beneficial to subsequent tests by a method of arranging anticoagulant in the blood storage tube (2), and has no risk of pollution when anticoagulant is added secondarily in the prior art. Meanwhile, the telescopic needle structure also prevents the condition that the patient is injured due to improper operation.)

1. The utility model provides a prevent blood clotting's negative pressure blood taking needle which characterized in that: the blood sampling device comprises a negative pressure elastic ball (1), a blood storage tube (2), a blood sampling needle cylinder (5) and a tube opening anticoagulant coating (4), wherein the tail end of a pipeline of the negative pressure elastic ball (1) is in threaded connection with a pipeline at the top of the blood storage tube (2), the bottom of the blood storage tube (2) is in threaded connection with the top of the blood sampling needle cylinder (5), and an orifice anticoagulant coating (4) is arranged near a blood inlet orifice at the bottom of the blood storage tube (2); the upper end of the blood storage tube (2) is provided with a circular pipeline with external threads and used for being connected with the negative pressure elastic ball (1), the lower end of the blood storage tube is provided with a cylindrical container, the bottom of the cylindrical container is provided with a blood inlet hole, and the bottom of the side wall of the cylindrical container is provided with the external threads; the blood sampling needle cylinder (5) is cylindrical, the bottom of the blood sampling needle cylinder is provided with a small hole for the blood sampling needle to go in and out, the top of the blood sampling needle cylinder is also provided with a small hole, the lower surface of the top of the blood sampling needle cylinder is connected with a guide pipe (6), the side wall of the needle cylinder is higher than the top, and the inner wall of the side wall is; blood taking needle (5) is arranged inside the blood taking needle cylinder (5), the top of the blood taking needle (5) is installed inside the guide pipe (6), and meanwhile, the blood taking needle (5) is sleeved with a double-layer annular baffle (7) arranged at intervals.

2. The negative pressure blood taking needle for preventing blood coagulation as claimed in claim 1, wherein a blood taking needle spring (8) is provided in the blood taking needle cylinder (5), the blood taking needle spring (8) is sleeved on the blood taking needle (5), one end of the blood taking needle spring abuts against the bottom surface of the blood taking needle cylinder (5), and the other end of the blood taking needle spring abuts against the baffle (7).

3. The negative pressure blood taking needle for preventing blood coagulation as claimed in claim 1, wherein the side of the blood taking cylinder (5) is provided with a button table (14) protruded toward the inside of the cylinder, a vertical button groove (12) is provided in the middle of the button table (14), and the button table (14) is provided with a stopper hole (13) having a diameter larger than the width of the button groove (12) at both ends of the button groove (12).

4. The negative pressure blood taking needle capable of preventing blood coagulation as claimed in claim 1, wherein the button (10) is installed in the button groove (12), the top of the button (10) is a cylinder with the diameter less than or equal to the width of the button groove (12), the bottom of the button (10) is a bottomless cylinder with the diameter greater than the width of the button groove (12) and less than the diameter of the limiting hole (13), the top of the button (10) extends out of the blood taking needle cylinder (5), the bottom of the button extends into the interval of the double-layer annular baffle (7), a button spring (11) is installed in the bottomless cylinder at the bottom, and the other end of the button spring (11) abuts against the side wall of the blood.

Technical Field

The invention relates to a blood taking needle, in particular to a negative pressure blood taking needle for preventing blood from coagulating.

Background

In the blood sampling process of hospitals, thrombin of some patients is released quickly, so that collected blood is quickly coagulated in a test tube, and unnecessary influences are caused on subsequent tests and other processes. Sometimes, medical staff will add anticoagulant again to the collected blood, but the anticoagulant adding process is complicated on one hand, and on the other hand, the blood may be polluted. Therefore, there is a need for a lancet capable of preventing blood from coagulating during the process of collecting blood.

Disclosure of Invention

In order to solve the above problems, the present invention provides a negative pressure lancet for preventing blood coagulation.

The invention is realized by the following technical scheme:

the utility model provides a prevent blood coagulation's negative pressure blood taking needle, includes negative pressure elasticity ball (1), stores up blood vessel (2), blood sampling cylinder (5) and mouth of pipe anticoagulant coating (4), the pipeline end of negative pressure elasticity ball (1) and the top pipeline of storing up blood vessel (2) pass through threaded connection, store up blood vessel (2) bottom and blood sampling cylinder (5) top and pass through threaded connection, advance near blood orifice and be equipped with drill way anticoagulant coating (4) storing up blood vessel (2) bottom.

The upper end of the blood storage tube (2) is a circular pipeline with external threads and used for being connected with the negative pressure elastic ball (1), the lower end of the blood storage tube is a cylindrical container, a blood inlet hole is formed in the bottom of the cylindrical container, and the external threads are arranged at the bottom of the side wall of the cylindrical container.

The blood sampling needle cylinder (5) is cylindrical, the bottom of the needle cylinder is provided with a small hole for the blood sampling needle to go in and out, the top of the needle cylinder is also provided with a small hole, the lower part of the top of the needle cylinder is connected with a guide pipe (6), and the side wall of the needle cylinder is higher than the top of the needle cylinder and the inner wall of the side wall of the needle.

Blood taking needle (5) is arranged inside the blood taking needle cylinder (5), the top of the blood taking needle (5) is installed inside the guide pipe (6), and meanwhile, the blood taking needle (5) is sleeved with a double-layer annular baffle (7) arranged at intervals.

The blood taking needle is characterized in that a blood taking needle spring (8) is arranged in the blood taking needle cylinder (5), the blood taking needle spring (8) is sleeved on the blood taking needle (5), one end of the blood taking needle abuts against the bottom surface of the blood taking needle cylinder (5), and the other end of the blood taking needle abuts against the baffle (7).

The side surface of the blood sampling syringe (5) is provided with a button platform (14) protruding towards the inside of the syringe, the middle of the button platform (14) is provided with a vertical button groove (12), and meanwhile, the two ends of the button groove (12) of the button platform (14) are provided with limiting holes (13) with the diameter being larger than the width of the button groove (12).

Button (10) are installed in button groove (12), and button (10) top is the cylinder of diameter less than or equal to button groove (12) width, and the bottom is greater than button groove (12) width and is less than the no end cylinder of spacing hole (13) diameter for the diameter, and blood sampling cylinder (5) are stretched out at button (10) top, and the bottom stretches into in double-deck annular baffle (7) interval, and installs button spring (11) in the no end cylinder of bottom, and button spring (11) other end supports on blood sampling needle (5) lateral wall.

Preferably, in addition to the port anticoagulant coating (4) provided near the blood inlet port of the blood storage vessel (2), a sidewall anticoagulant coating (3) may be provided on the sidewall.

At ordinary times, the blood taking needle (9) is contracted inside the blood taking needle cylinder (5) because the blood taking needle spring (8) extrudes the double-layer annular baffle (7) sleeved on the blood taking needle (9); when the blood taking needle is used, the button (10) is pressed, the button (10) extends out of a limiting hole (13) in the bottom of the button table (14), the button (10) is pulled to the limiting hole (13) in the bottom towards the lower part of the needle cylinder, the bottom of the button extends into the interval of the double-layer annular baffle (7), the blood taking needle (9) also extends out of a small hole in the bottom of the blood taking needle cylinder (5) downwards, the button is loosened at the moment, and the button spring (11) is arranged at the bottom of the button and supports against the blood taking needle (9), and the blood taking needle is pushed back into the limiting hole (13) in the bottom by the button spring (. At the moment, the blood taking needle spring (8) can not extrude the blood taking needle (9) into the blood taking needle cylinder (5) due to the blocking of the limiting hole (13), and the blood taking needle (9) can extend out of the blood taking needle cylinder (5) for use. After the use is finished, the button (10) is pressed again, the button (10) extends out of the limiting hole (13) at the bottom, and the blood taking needle spring (8) can press the blood taking needle (9) into the blood taking needle cylinder (5).

When the blood taking device is used, firstly, the negative pressure elastic ball (1) is used for pinching and holding, then the blood taking needle (9) is ejected out and inserted into a blood vessel of a patient, the hand is loosened from the negative pressure elastic ball (1), and the blood of the patient can be automatically sucked into the blood storage vessel (2) due to the lower air pressure of the negative pressure elastic ball (1).

The invention has the beneficial effects that: according to the invention, the orifice anticoagulant coating (4) is arranged near the blood storage tube (2), so that collected blood is mixed with anticoagulant when entering the blood storage tube (2), the blood coagulation speed is slowed down, convenience is provided for subsequent tests and other procedures, and the risk caused by additional anticoagulant addition is avoided. The structure of the button, the spring and the limiting hole is adopted, so that the blood taking needle (9) can extend out or retract from the blood taking needle cylinder (5), and the risk of accidentally injuring other people before and after use is reduced.

Drawings

FIG. 1 is an isometric sectional view of a negative pressure lancet for preventing blood coagulation provided in the present invention.

FIG. 2 is a sectional view of the negative pressure lancet for preventing blood coagulation according to the present invention.

FIG. 3 is an external view of the negative pressure lancet for preventing blood coagulation according to the present invention.

FIG. 4 is an exploded view of the negative pressure lancet for preventing blood coagulation according to the present invention.

Figure 5 is an isometric cross-sectional view of a blood storage tube provided by the present invention.

Fig. 6 is a structural view of a blood collection syringe provided by the present invention.

In the figure: 1. negative pressure elasticity ball, 2, store up the blood vessel, 3, lateral wall anticoagulant coating, 4, mouth of pipe anticoagulant coating, 5, blood sampling cylinder, 6, stand pipe, 7, double-deck annular baffle, 8, blood sampling needle spring, 9, blood sampling needle, 10, button, 11, button spring, 12, button groove, 13, spacing hole, 14, button platform.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

as shown in fig. 1 to 6, a negative pressure blood taking needle for preventing blood coagulation comprises a negative pressure elastic ball (1), a blood storage tube (2), a side wall anticoagulant coating (3), a tube opening anticoagulant coating (4), a blood taking needle cylinder (5), a guide tube (6), a double-layer annular baffle (7), a blood taking needle spring (8), a blood taking needle (9), a button (10), a button spring (11), a button groove (12), a limiting hole (13) and a button table.

The top of the negative pressure elastic ball (1) is an elastic hollow ball, the bottom of the negative pressure elastic ball is a pipeline with internal threads, and the pipeline can be in threaded connection with the pipeline at the top of the blood storage tube (2).

The upper end of the blood storage tube (2) is a circular pipeline with external threads, the upper end of the blood storage tube can be in threaded connection with the negative pressure elastic ball (1), the lower end of the blood storage tube is a cylindrical container, a blood inlet hole is formed in the bottom of the cylindrical container, and the external threads are arranged at the bottom of the side wall of the cylindrical container. An orifice anticoagulant coating (4) is arranged near a blood inlet orifice inside the blood storage tube (2), and a side wall anticoagulant coating (3) is arranged on the side wall.

The blood sampling needle cylinder (5) is cylindrical, the side wall is higher than the top, an internal thread which can be connected with the external thread of the blood storage tube (2) is arranged on the side wall, and a small hole for the blood sampling needle (9) to go in and out is formed at the bottom. A bleeding hole is formed in the center of the top of the blood collection needle cylinder (5), the bottom of the bleeding hole is communicated with the guide tube (6), and a part of blood collection needle (9) is installed in the guide tube (6), so that the blood collection needle (9) can stretch out and draw back along the direction of the guide tube (6) and blood can not flow into the blood collection needle cylinder (5) from the blood collection needle (9). The blood taking needle (9) is sleeved with a fixed double-layer annular baffle (7) and a blood taking needle spring (8), one end of the blood taking needle spring (8) is propped against the bottom of the blood taking needle cylinder (5), and the other end of the blood taking needle spring is propped against the double-layer annular baffle (7).

The blood sampling syringe (5) is characterized in that a button platform (14) protruding towards the inside of the syringe is arranged on the side face of the blood sampling syringe (5), two ends of the button platform (14) are circular, the middle of the button platform is rectangular, a completely cut button groove (12) is formed in a vertical symmetrical line of the button platform, two limiting holes (13) which are not completely cut are formed in the button platform (14) by taking two ends of the button groove (12) as the circle center, the diameter of each limiting hole (13) is larger than the width of the button groove (12), and the spacing width of each limiting hole is smaller than or equal to the spacing width of the double-.

Button (10) top is the cylinder of diameter less than or equal to button groove (12) width, and the bottom is the diameter and is greater than button groove (12) width and be less than the no end cylinder of spacing hole (13) diameter, and button (10) top stretches out blood sampling cylinder (5), and in double-deck annular baffle (7) interval was stretched into to the bottom, and installed button spring (11) in the no end cylinder of bottom, button spring (11) other end supported on blood sampling needle (5) lateral wall.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.