A blood collection needle with visible blood return
A technology of blood collection needle and blood return port, which is applied in the field of medical devices, can solve the problems of unfavorable automatic production, large residual blood volume and high assembly precision, and achieves the effects of stable working effect, simple overall structure and easy operation.
Active Publication Date: 2016-09-07
BERPU MEDICAL TECH CO LTD
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the existing blood collection needles with visible blood return either have a large amount of residual blood, or have complicated structures and require high assembly precision, which is not conducive to automatic production in large quantities.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0009] The present invention will be further described below with reference to the accompanying drawings.
[0010] The present invention is a blood collection needle for visible blood return, as shown in the figure, it mainly includes a venipuncture end needle holder 7, one end of the venipuncture end needle holder 7 is fixedly connected with one end of the tube plug puncture end needle holder 11, the two pass through Welding (bonding) becomes an integral structure, and a certain sealed space is formed inside the two, that is, the blood return observation chamber 8, and the needle tube 4 runs through the central lumen of the needle seat 7 at the venipuncture end and the needle seat 11 at the puncture end of the tube plug , the needle tube 4 forms the needle tube venipuncture end 1 outside the venipuncture end needle base 7, and the needle tube 4 forms the needle tube plug puncture end 6 outside the tube plug puncture end needle base 11, which is characterized in that: the venip...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a blood taking needle capable of enabling returning blood to be seen. The blood taking needle capable of enabling the returning blood to be seen is characterized in that a returning blood isolation outer tube is formed at the inner cavity center position of a vein puncture end needle seat, a returning blood observation cabin is formed by an inner cavity of the returning blood isolation outer tube, at least one returning blood opening is formed in the tube wall of a needle tubing placed in the returning blood observation cabin, a returning blood isolation inner tube is arranged at the impending end of the returning blood isolation outer tube, and the returning blood isolation inner tube is placed at the center position of a tube plug puncture end needle seat. The other end of the returning blood isolation inner tube is impending. A gap is formed between the impending end of the returning blood isolation inner tube and the impending end of the returning blood isolation outer tube. A vein puncture needle and a tube plug puncture needle are arranged at two ends of the same needle tubing with different needle tip types. The relative volume of an inner cavity formed between the returning blood isolation inner tube and the returning blood isolation outer tube and a gum cover is selected, the relative volume is 18 times to 25 times the volume of an inner cavity of a needle tubing between the tail end of the needle tubing vein puncture end and the returning blood opening, and thereby fast and reliable returning blood visibility is achieved under the condition of few residuary blood volume.
Description
technical field [0001] The invention relates to the technical field of medical devices, in particular to a blood collection needle with visible blood return, and in particular to its mechanical connection structure. Background technique [0002] Comparative document 1, patent application number: 200820055045.9, patentee: Zhang Hongjie, application date: 2008.1.24, announcement number: CN201157363Y, this case discloses a disposable blood collection needle with visible blood return, which mainly includes a venipuncture needle holder And the tube plug puncture needle seat, and the corresponding venipuncture needle and tube plug puncture needle, characterized in that: the cavity of the venipuncture needle seat is hollow, and the cavity of the venipuncture needle seat is provided with a blood return isolation inner tube, one end of which is fixed on The inner wall of the venipuncture needle seat, and the other end is set in the inner cavity of the blood return isolation outer tub...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/154
Inventor 张洪杰
Owner BERPU MEDICAL TECH CO LTD