CN221888237U - Arterial blood taking needle - Google Patents

Abstract

The utility model discloses an arterial blood taking needle which comprises a push plate, a piston rod, a needle cylinder, a piston, a three-way valve structure, a needle nipple, a needle point protective cover, an inner cone interface, a base, a bottle stopper puncture needle protective cover, a bottle stopper puncture needle protective cover and a three-way valve handle. The outer wall of the needle cylinder is printed with scales, the bottom end of the needle cylinder is provided with a needle nipple, the middle section of the needle nipple is provided with a three-way valve structure. One side of the bottom end of the needle cylinder is an inner cone interface. The three-way valve structure is positioned at the middle section of the needle nipple, when the three-way valve handle and the needle nipple are at a near vertical angle, the needle nipple is connected up and down, and when the three-way valve handle rotates to a horizontal angle with the needle nipple, the needle nipple passage is blocked, and liquid cannot flow up and down. The utility model is simple and practical, the outer wall of the needle cylinder is provided with scales, the blood sampling amount can be accurately measured through the scales, and the blood waste and the generation of unqualified samples are reduced; through the three-way valve structure, blood drawing can be temporarily interrupted, the base is taken down and replaced by an arterial blood needle, various specimens required by examination can be completed through one-time puncture, and pain brought to secondary puncture of a patient is reduced.

Description

Arterial blood collection needle

Technical Field

The utility model belongs to the technical field of medical appliances, and in particular relates to an arterial blood collection needle.

Background Art

Arterial blood gas analysis is an important examination in medical activities. When arterial blood gas analysis is needed, when the doctor gives a medical order, it is generally necessary not only to draw arterial blood for blood gas analysis, but also to draw blood for other tests, most of which can be done with arterial blood. In clinical practice, an arterial blood collection needle is used to draw arterial blood, and then a venous blood collection needle is used to draw venous blood. This requires two punctures, which makes the patient suffer the pain of two punctures. Multiple punctures will also bring more risks of needlestick injuries to the operator. Therefore, it is necessary to design a blood collection needle that can complete two steps of blood collection at the same time to solve the above problems.

Utility Model Content

The utility model aims to solve the above problems in the prior art and provide an arterial blood collection needle.

The utility model is an arterial blood collection needle, which includes: a push plate, a piston rod, a syringe, a piston, a three-way valve structure, a needle nipple, a needle tip, a needle tip protection cover, an inner cone interface, a base, a bottle plug puncture needle protection cover, a bottle plug puncture needle, a bottle plug puncture needle protection sleeve, and a three-way valve handle. The outer wall of the syringe is printed with scales, the bottom end of the syringe is a needle nipple, and the middle section of the needle nipple is provided with a three-way valve structure. One side of the bottom end of the syringe is an inner cone interface.

Furthermore, the needle nipple, inner cone interface and base are consistent with the universal model and can be freely combined and connected with their corresponding structures.

Furthermore, the three-way valve structure is located in the middle section of the needle nipple. When the three-way valve handle is at a nearly vertical angle to the needle nipple, the needle nipple is moved up and down. When the three-way valve handle is rotated to a horizontal angle with the needle nipple, the needle nipple passage is blocked and the liquid cannot flow up and down.

The utility model is simple and practical, and the outer wall of the syringe is printed with scales, by which the amount of blood drawn can be accurately measured; through the three-way valve structure, blood drawing can be temporarily interrupted, the base can be removed and replaced with an arterial blood gas needle, thereby reducing the pain caused by secondary puncture to the patient.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the utility model;

In the figure, 1, push plate 2, piston rod 3, syringe 4, piston 5, three-way valve structure 6, needle nipple 7, needle tip 8, needle tip protection cover 9, inner cone interface 10, base 11, bottle stopper puncture needle protection cover 12, bottle stopper puncture needle 13, bottle stopper puncture needle protection cover 14, three-way valve handle.

DETAILED DESCRIPTION

The utility model discloses an arterial blood collection needle, which comprises a push plate 1, a piston rod 2, a syringe 3, a piston 4, a three-way valve structure 5, a needle nipple 6, a needle tip 7, a needle tip protection cover 8, an inner cone interface 9, a base 10, a bottle stopper puncture needle protection cover 11, a bottle stopper puncture needle 12, a bottle stopper puncture needle protection sleeve 13, and a three-way valve handle 14.

The outer wall of the syringe 3 is printed with scales, the bottom end of the syringe 3 is a needle nipple 6, and the middle section of the needle nipple 6 is provided with a three-way valve structure 5. One side of the bottom end of the syringe 3 is an inner cone interface 9.

Furthermore, the needle nipple 6, the inner cone interface 9, and the base 10 are consistent with the universal model and can be freely combined and connected with the corresponding structures.

Furthermore, the three-way valve structure 5 is located in the middle section of the needle nipple 6. When the three-way valve handle 14 is at a nearly vertical angle to the needle nipple 6, the needle nipple 6 is connected up and down, and blood can be drawn at this time. When the three-way valve handle 14 is rotated to a horizontal angle with the needle nipple 6, the passage of the needle nipple 6 is blocked and the liquid cannot flow up and down.

The specific application of the utility model in clinical practice is as follows:

(1) Rotate the three-way valve handle 14 to make it nearly perpendicular to the needle nipple 6, so that the needle nipple 6 is connected up and down. At this time, blood can be drawn. (2) Disinfect the skin in the correct way, remove the needle tip protection cover 8, and perform puncture in the correct way and successfully. (3) Draw blood by pulling the push plate 1. The scale on the outer wall of the syringe 3 can be used to judge whether the amount of blood drawn is sufficient, thereby reducing the waste of drawing too much blood or the unqualified specimen caused by insufficient blood. (4) After the blood draw volume is reached, rotate the three-way valve handle 14 to a horizontal angle with the needle nipple 6, the needle nipple 6 passage is blocked, and blood cannot flow up and down. (5) Remove the bottle stopper puncture needle protection cover 11. (6) Insert the bottle stopper puncture needle 12 into the blood collection tube. After the bottle stopper puncture needle 12 pierces the bottle stopper puncture needle protection cover 13, the closed structure is broken, and the blood collection volume of each blood collection tube can be controlled by pushing the push plate 1. If the amount of blood collected at one time is insufficient, the three-way valve structure 5 can be reopened to draw blood, and then the above operations (3), (4), and (6) are repeated in sequence to complete the blood drawing. After completing the routine blood collection, the base 10 is removed, the arterial blood gas needle is connected to the inner cone interface 9, and arterial blood is drawn for blood gas analysis.

The utility model is simple and practical. The outer wall of the syringe is printed with scales, and the blood collection volume can be accurately measured by the scales, thereby reducing blood waste and the generation of unqualified specimens. Through the three-way valve structure, blood drawing can be temporarily interrupted, and the base can be removed and replaced with an arterial blood gas needle. The specimens required for various examinations can be completed through one puncture, reducing the pain caused by secondary punctures to patients.

This specification describes general examples of the present utility model, and this specification should not be understood as limiting the present utility model.

Claims (1)

1. An arterial blood collection needle, characterized in that it includes a push plate, a piston rod, a syringe, a piston, a three-way valve structure, a needle nipple, a needle tip, a needle tip protection cover, an inner cone interface, a base, a bottle stopper puncture needle protection cover, a bottle stopper puncture needle, a bottle stopper puncture needle protection sleeve, and a three-way valve handle; the outer wall of the syringe is printed with scales, the bottom end of the syringe is a needle nipple, the middle section of the needle nipple is provided with a three-way valve structure, and one side of the bottom end of the syringe is an inner cone interface; the three-way valve structure is located in the middle section of the needle nipple, when the three-way valve handle is at a nearly vertical angle to the needle nipple, the needle nipple is moved up and down together, and when the three-way valve handle is rotated to a horizontal angle with the needle nipple, the needle nipple passage is blocked and the liquid cannot flow up and down.