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Blood collection needle for controlling flow through switch structure and blood collection tube

A switch structure and flow control technology, applied in the field of medical devices, can solve the problems of cell volume increase, exceeding the mark line, insufficient blood anticoagulation, etc., and achieve the effect of accurate blood collection and easy operation

Inactive Publication Date: 2019-02-01
INNER MONGOLIA UNIV FOR THE NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amount of blood collected has a significant impact on the concentration changes of additives such as anticoagulant, protective agent, and coagulant accelerator. Significant impact: If the concentration of anticoagulant is too low, the anticoagulation of blood will be insufficient; if it is too high, it will affect the increase of cell volume, form hypertonicity, and affect the test results
At present, when the nursing staff takes blood, they can only quickly judge whether the blood collection volume has reached the marked line on the blood collection tube through experience. The nursing staff needs to quickly disconnect the blood collection tube and the blood collection needle. There is a change, that is, when the concave surface of blood in the blood collection tube reaches the marking line, and then the blood collection tube is cut off, the actual blood volume will exceed the marking line, and the concentration in the blood collection tube will change; if the blood collection tube is cut off in advance, the actual blood collection volume will decrease to varying degrees Below the mark line, the concentration in the blood collection tube changes

Method used

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  • Blood collection needle for controlling flow through switch structure and blood collection tube
  • Blood collection needle for controlling flow through switch structure and blood collection tube
  • Blood collection needle for controlling flow through switch structure and blood collection tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Such as figure 1 , 2 . As shown in 3, a blood collection needle and a blood collection tube that control the flow rate through a switch structure described in this embodiment include: the blood collection needle includes a puncture needle, a flexible tube, and a puncture needle;

[0068] The puncture needle is connected with the flexible tube through the puncture needle, and is used to puncture one end of the puncture needle of the blood collection needle into the patient's body for blood collection; into the blood collection tube to receive blood;

[0069] The blood collection tube includes a tube body and a tube cover, the outer diameter of the tube cover is larger than the outer diameter of the tube, and the tube cover is fastened to the mouth of the tube body;

[0070] It is characterized by:

[0071] The outside of the blood collection tube is provided with a jacket, and the jacket is wrapped around the outside of the blood collection tube for fixing the blood c...

Embodiment 2

[0087] Such as Figure 4 , 5 , 6, on the basis of the above embodiments, the puncture needle and / or the hose and / or the plunger needle described in this embodiment are provided with a switch structure, and the switch structure includes a switch part and a control part;

[0088] The switch part is set on the puncture needle and / or the hose and / or the plunger needle, which is used to open and close the blood transfusion channel of the blood collection needle, or control the blood flow rate and flow rate of the blood transfusion channel;

[0089] The control part is set on the jacket, which is used for the nursing staff to control the on-off of the switch part or adjust the opening and closing degree of the switch part through the control part while using the blood collection tube to collect blood;

[0090] The control part and the switch part are mechanically connected and / or electrically connected and / or connected by pipelines through the control line. The above-mentioned conn...

Embodiment 3

[0094] Such as Figure 4 As shown, on the basis of the above-mentioned embodiments, the switch structure described in this embodiment is a mechanical device, and the control part is located outside the cover of the jacket;

[0095] The control part includes a base and a handle, the base is fixed on the cover sleeve, one end of the handle is hinged on the bottom of the base, and the other end protrudes outward;

[0096] The base is provided with a support arm, the support arm extends upward, and the switch part of the switch structure is assembled on the top of the support arm;

[0097] The support arm is a hollow structure, and a pull rod is arranged inside the support arm, the bottom end of the pull rod is hinged with the handle, and the top end of the pull rod is connected with the switch part; the switch part includes a switch box, and the switch box is provided with a switch fixed part and a switch movable part , the fixed part of the switch is fixedly connected with the ...

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Abstract

The invention belongs to the technical field of medical apparatus and instruments and particularly relates to a blood collection needle for controlling the flow through a switch structure and a bloodcollection tube. Currently, nursing personnel can quickly judge whether or not the blood collection amount reaches a scribed mark on the blood collection tube only with the help of experience during blood collection operation, nursing personnel need to quickly disconnect connection of the blood collection tube and the blood collection needle, and the blood collection amount in the blood collectiontube is changed in the process. A clamping sleeve is arranged on the exterior of the blood collection tube and comprises a cover sleeve body and a body sleeve body, the clamping sleeve is also divided into left and right half clamping sleeve bodies, a scale line is arranged on the outer wall of the front end of each half clamping sleeve body, and the scale lines of the two half clamping sleeve bodies are in axial symmetry; the switch structure is arranged on the blood collection needle. The blood collection needle is provided with the switch structures of multiple forms and has multiple control methods, the blood collection amount can be better controlled, an auxiliary device and structure such as the scale lines arranged on the clamping sleeve bodies are easier to operate, the blood collection amount in the blood collection tube is more accurate, and the basis is laid for more accurate blood analysis results of the later period.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a blood collection needle and a blood collection tube whose flow is controlled by a switch structure. Background technique [0002] Vacuum blood collection tube technology is currently the most advanced blood collection technology in the world. The technical characteristics of vacuum blood collection tube are: [0003] (1) Automatic metering, no need to withdraw: due to the artificial vacuum in the blood collection tube, the blood collection volume can be controlled by controlling the air pressure. There is no need to manually withdraw and measure during operation; [0004] (2) High degree of sterility and little interference in the test: In order to maintain the vacuum in the tube, the cap of the vacuum blood collection tube has better airtightness, high degree of sterility, less chance of blood contamination, and relatively little interference to the test results; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/154
CPCA61B5/154A61B5/15003A61B5/150221
Inventor 李淑芝刘国立白玉红
Owner INNER MONGOLIA UNIV FOR THE NATITIES