Quantitative blood taking needle

Abstract

The utility model discloses a quantitative blood taking needle which comprises a push plate, a piston rod, a needle cylinder, a piston, a connector, a nipple, a nipple protection cover, a base, a puncture needle protection cover, a puncture needle protection sleeve, a puncture needle and a connector protection cover. The piston is connected to the bottom end of the piston rod, a push plate is arranged at the top end of the piston rod, and the piston is tightly attached to the inner wall of the needle cylinder and can move up and down by pushing the push plate and the piston rod. Scales are printed on the outer wall of the needle cylinder, the blood sampling amount can be accurately measured through the scales, and the problem that the blood sampling amount is insufficient possibly due to the fact that whether the blood sampling amount reaches the standard or not is judged through experience is solved. The utility model is simple and practical, is simple and convenient to use, and is a disposable product.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical appliances, and in particular relates to a quantitative blood collection needle. Background Art

[0002] Blood drawing is a basic inspection measure in medical and health activities. During the blood drawing process, the judgment of whether the amount of blood collected reaches the amount required for the inspection depends only on the naked eye of the nurse. For experienced nurses, the problem of insufficient blood collection may rarely occur, while for young nurses, inaccurate judgment may lead to waste of medical consumables and the pain of patients being punctured by blood collection needles for the second time. In addition, for patients whose blood is difficult to collect, the blood flows out slowly and less, and it is difficult for nurses of different seniority to judge the amount of blood collected. In the intensive care unit, the external three-way opening of the arterial puncture catheter is often used for blood collection, which also has the above problems, and there is a lack of special blood collection tools for blood collection at this location. Therefore, it is necessary to design a blood collection device that is easy to operate to solve the above problems. Summary of the invention

[0003] The utility model aims to solve the above problems in the prior art and provide a quantitative blood collection needle.

[0004] The utility model is a quantitative blood collection needle, which includes: a push plate, a piston rod, a syringe, a piston, a connecting port, a nipple, a nipple protective cover, a base, a puncture needle protective cover, a puncture needle protective sleeve, a puncture needle, and a connecting port protective cover. The base, the puncture needle protective cover, the puncture needle protective sleeve and the puncture needle together constitute a puncture structure. The piston is connected to the bottom end of the piston rod, and the top end of the piston rod is a push plate. The piston fits tightly with the inner wall of the syringe and can move up and down by pushing the push plate and the piston rod. The outer wall of the syringe is printed with scales, the bottom end is a nipple, and one side of the bottom end is a connecting port. The base and the connecting port protective cover can be tightly connected to the connecting port.

[0005] Furthermore, the shapes and sizes of the nipple, the connection port, the connection port protection cover, the nipple protection cover, and the base are consistent with the common clinical appliances. The nipple can be tightly connected with a structure such as a tee.

[0006] Furthermore, the puncture needle protective cover is located outside the puncture needle and wraps it, and blood will not be discharged before the puncture needle protective cover is punctured. After the blood collection tube is connected, the puncture needle punctures the puncture needle protective cover and blood flows out.

[0007] The utility model is simple, practical, easy to use and a disposable product. The outer wall of the syringe is printed with scales, and the blood collection volume can be accurately measured by the scales, solving the problem of insufficient blood collection volume that may occur when judging whether the blood collection volume meets the standard based on experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of connecting the puncture needle of the utility model;

[0009] Figure 2 It is a schematic diagram of the utility model for connecting the connection port protection cover;

[0010] Figure 3 It is a schematic diagram of the connection between the utility model and the tee;

[0011] Figure 4 This is a schematic diagram of the connection between the puncture needle and the blood collection tube of the utility model;

[0012] In the figure, 1, push plate 2, piston rod 3, syringe 4, piston 5, connection port 6, nipple 7, nipple protection cover 8, base 9, puncture needle protection cover 10, puncture needle protection sleeve 11, puncture needle 12, tube plug 13, blood collection tube 14, three-way opening 15, three-way valve 16, three-way 17, catheter 18, connection port protection cover. DETAILED DESCRIPTION

[0013] The head and face pad 1 is composed of an inner bracket and a pillowcase. The head and face pad 1 is a middle reference. Figures 1 to 4 The utility model is a quantitative blood collection needle, which includes: a push plate 1, a piston rod 2, a syringe 3, a piston 4, a connection port 5, a nipple 6, a nipple protection cover 7, a base 8, a puncture needle protection cover 9, a puncture needle protection sleeve 10, a puncture needle 11, and a connection port protection cover 18. The base 8, the puncture needle protection cover 9, the puncture needle protection sleeve 10 and the puncture needle 11 together constitute a puncture structure.

[0014] The piston 4 is connected to the bottom end of the piston rod 2, the top end of the piston rod 2 is a push plate 1, the piston is tightly connected to the inner wall of the syringe 3, and moves up and down by pushing the push plate 1 and the piston rod 2. The outer wall of the syringe 3 is printed with scales, the bottom end is a nipple 6, and one side of the bottom end is a connection port 5. The base 8 and the connection port protective cover 18 can be tightly connected to the connection port.

[0015] Furthermore, the shapes and sizes of the nipple 6, the connection port 5, the connection port protection cover 18, the nipple protection cover 7, and the base 8 are consistent with those of common clinical appliances. The nipple can be tightly connected to a structure such as a tee.

[0016] Furthermore, the puncture needle protective cover 10 is located outside the puncture needle 11 and wraps it, and blood will not be discharged before the puncture needle protective cover 10 is punctured. After the blood collection tube is connected, the puncture needle 11 punctures the puncture needle protective cover 10, and blood flows out.

[0017] The specific application of the utility model in clinical practice is as follows:

[0018] The base 8 of the puncture structure is installed on the connection port 5, and the nipple protection cover 7 is removed. The nipple 6 is connected to the three-way opening 14 of the arterial puncture after the saline solution is discharged. The amount of blood drawn is controlled by the push plate 1. The scale printed on the outer wall of the syringe 3 is used to determine whether the blood collection amount has been reached, so as to solve the problem of insufficient or excessive blood collection and waste that may occur when judging whether the blood collection amount meets the standard by experience. After the blood collection amount is reached, the blood passage between the nipple 6 and the catheter 17 is closed by the three-way valve 15, and the puncture needle protection cover 9 is removed. The puncture structure is inserted into the tube plug 12 at the top of the blood collection tube 13. After the puncture needle 11 pierces the puncture needle protection cover 10, the tube plug 12 is pierced, and the blood is discharged into the blood collection tube 13 by pushing the push plate 1, and then the operation is repeated to collect other blood. After completing the routine blood collection, the puncture structure can be removed, and the connection port protection cover 18 can be installed on the connection port 5 to close the opening, and blood collection can be continued for measuring the activation of whole blood coagulation time, etc.

[0019] This specification describes the present utility model. Those skilled in the art should understand during implementation that the above specific implementation methods are only general examples of the present utility model, and this specification should not be understood as limiting the present utility model.

Claims

1. A quantitative blood collection needle, characterized in that: It includes a push plate, a piston rod, a syringe, a piston, a connecting port, a nipple, a nipple protection cover, a base, a puncture needle protection cover, a puncture needle protection sleeve, a puncture needle, and a connecting port protection cover; the piston is connected to the bottom end of the piston rod, the top end of the piston rod is a push plate, and the piston fits tightly against the inner wall of the syringe; the outer wall of the syringe is printed with scales, the bottom end is a nipple, and one side of the bottom end is a connecting port; the base, the puncture needle protection cover, the puncture needle protection sleeve and the puncture needle together constitute a puncture structure, and the base can be tightly connected to the connecting port.

2. A quantitative blood collection needle according to claim 1, characterized in that: The shapes and sizes of the nipple, nipple protection cover, connection port, connection port protection cover and base are consistent with those of commonly used clinical appliances and can be tightly connected to their corresponding structures respectively.

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