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Vein blood sampling catheter

A catheter and vein technology, which is applied to the field of aseptic blood collection catheters, can solve the problems of increasing the difficulty of catheter placement, difficulty in catheter placement, and speeding up blood collection, and achieves the effect of avoiding friction.

Inactive Publication Date: 2016-03-23
GUANGZHOU MUNICIPAL ZHONGWEI BIOTECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the present invention, a side hole is arranged at the front end of the tube body, and the side hole relatively increases the caliber of the blood drawing, thereby speeding up the blood collection speed and making it difficult to form a fibrin sheath, which solves the problem of difficulty in increasing the blood collection speed or placing the tube; The same side of the tube body can reduce the possibility of the catheter being bent to one side. Controlling the distance between the holes on both sides and the size of the hole can prevent the side hole from becoming soft and unstressed during intubation. Too many side holes will also increase the difficulty of catheterization. difficulty

Method used

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  • Vein blood sampling catheter
  • Vein blood sampling catheter
  • Vein blood sampling catheter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 As shown, a venous blood collection catheter includes a tube body 1, a connecting seat 5, an extension tube 7, a slider 6 and an extension tube joint 8, the rear end of the tube body 1 is connected to one end of the extension tube 7 through the connection seat 5, The other end of the extension tube 7 is connected with an extension tube joint 8 . The tube body 1 is a straight single-lumen catheter, and the diameter range of the tube body is 1.40-2.70mm (including the existing catheter specification range of 18-12Ga or 4-8Fr). If the diameter is too small, it is not conducive to blood collection, but if the diameter is too thick It is not suitable for intravenous catheterization. The front end 4mm of the tube body 1 is a tapered nozzle 2 made of soft wear-resistant silica gel, polyvinyl chloride or polyurethane (PU). The first blood sampling is not good. The holes 3 and 4 on both sides are located at the symmetrical ends of the side wall of the pipe bo...

Embodiment 2

[0030] Such as figure 1 As shown, a venous blood collection catheter includes a tube body 1, a connecting seat 5, an extension tube 7, a slider 6 and an extension tube joint 8, the rear end of the tube body 1 is connected to one end of the extension tube 7 through the connection seat 5, The other end of the extension tube 7 is connected with an extension tube joint 8 . The tube body 1 is a straight single-lumen catheter with a caliber range of 2.00mm. If the caliber is too small, it is not conducive to blood collection, and if the caliber is too large, it is not suitable for intravenous catheterization. The front end 4mm of the tube body 1 is a tapered nozzle 2 made of soft wear-resistant silica gel, polyvinyl chloride or polyurethane (PU). The first blood sampling is not good. The holes 3 and 4 on both sides are located at the symmetrical ends of the side wall of the tube body 1. The diameter of the side holes 3 and 4 is 1 / 3 of that of the tube body 1. The distance between ...

Embodiment 3

[0032] Such as figure 1 As shown, a venous blood collection catheter includes a tube body 1, a connecting seat 5, an extension tube 7, a slider 6 and an extension tube joint 8, the rear end of the tube body 1 is connected to one end of the extension tube 7 through the connection seat 5, The other end of the extension tube 7 is connected with an extension tube joint 8 . The tube body 1 is a straight single-lumen catheter with a caliber range of 2.70 mm. If the caliber is too small, it is not conducive to blood collection, and if the caliber is too large, it is not suitable for intravenous catheterization. The front end 4mm of the tube body 1 is a tapered nozzle 2 made of soft wear-resistant silica gel, polyvinyl chloride or polyurethane (PU). The first blood sampling is not good. The holes 3 and 4 on both sides are located at the symmetrical ends of the side wall of the tube body 1. The diameter of the side holes 3 and 4 is 1 / 3 of that of the tube body 1. The distance between...

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Abstract

The invention provides a vein blood sampling catheter which comprises a catheter body, a connecting base, an extension tube, a sliding buckle and an extension tube connector. The rear end of the catheter body is connected with one end of the extension tube through the connecting base, and the other end of the extension tube is connected with the extension tube connector. Two side holes communicated with the catheter body are formed in the side face of a front end catheter opening of the catheter body and located in the two opposite side walls of the catheter body respectively. The diameter of each side hole is 1 / 3-2 / 3 of the opening diameter of the catheter body. The distance between the two side holes is 3-8 mm. The side hole close to the catheter opening is distanced from the rear portion of the catheter opening by 5-10 mm. A straight single-cavity catheter is adopted as the catheter body, and the range of the opening diameter of the catheter is 1.40-2.70 mm. The side holes are formed in the front end of the catheter body, the opening diameter for blood sampling is relatively increased through the side holes, the blood sampling speed is increased, fibrous protein sheaths do not form easily, and the problem that the blood sampling speed is difficult to increase or the catheter is difficult to place is solved.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a catheter for aseptic blood collection in animal veins. Background technique [0002] There are many biological products and scientific research reagents on the market that require animal plasma or serum as raw and auxiliary materials, such as animal fibrin glue, immunoglobulin, etc. The quality of animal plasma or serum affects the effectiveness and safety of biological products. At present, the method of mass blood collection of pigs, cattle, sheep and other animals is mainly bloodletting by assassination. This method can only collect blood from animals ready to be slaughtered at one time, which is a waste of resources for plasma collection. At the same time, blood flows out from the wound, and contact with fur and body fluids causes blood pollution. [0003] In view of this, Li Yong invented the "method for aseptic production of raw animal serum with multi-pack fully enclosed"...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/153
CPCA61B5/15003A61B5/150053A61B2503/40
Inventor 万华印张俊辉朱晋辉李伟达樊鸿浩邓乐君万文悦
Owner GUANGZHOU MUNICIPAL ZHONGWEI BIOTECH CO LTD
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