Central venous catheter with wall adherence preventing device for dialysis

A central venous catheter and catheter technology, which can be applied to dialysis systems, balloon catheters and other directions, can solve the problems of difficult development, high process requirements, high price and the like, and achieve the effects of strong clinical practicability, simple manufacturing process and low cost.
CN102861373AInactive Publication Date: 2013-01-09ZHONGSHAN HOSPITAL XIAMEN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ZHONGSHAN HOSPITAL XIAMEN UNIV
Publication Date
2013-01-09
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a central venous catheter with a wall adherence preventing device for dialysis. The central venous catheter comprises a catheter body, an outlet, a blood inlet and a blood outlet, an air bag which is close to the blood inlet is sleeved at a position of the upper portion of the blood inlet, the air bag comprises an air bag body and an air bag channel which is connected with the air bag body, the other end of the air bag channel extends to a position of the outlet of the upper end of the catheter to form an air vent, and the air bag body comprises at least three same air bag pouches which are uniformly distributed on a same horizontal plane. By means of the central venous catheter with the wall adherence preventing device for the dialysis, the problems that the blood inlet adheres to the wall when a dialysis catheter is placed in vein for a long time, and wall adherence can occur due to conditions of low blood pressure and the like of critically ill patients can be excellently solved, when blood flow is blocked caused by the fact that a fibrin sheath forms and wraps the tip end of the catheter, the air bag is opened to open up the fibrin sheath, thereby a part of space is reserved to enable blood to pass, the manufacturing process is simple, the cost is low, and the clinical practicability is high.
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Description

technical field

[0001] The invention relates to a venous catheter, in particular to a central venous catheter for dialysis. Background technique

[0002] Dialysis catheters are an essential medical device during hemodialysis. Common dialysis catheters are divided into single-lumen catheters, double-lumen catheters, and triple-lumen catheters according to the number of lumens in the catheter. A typical double lumen dialysis catheter structure is as follows: figure 1 As shown, it includes a catheter body 1 , two independent outlets 2 at the upper end of the catheter body 1 , a blood outlet 3 (tip) at the lower end of the catheter body 1 and a blood inlet 4 at the lower side wall of the catheter body 1 .

[0003] Some dialysis patients need to indwell a double-lumen dialysis catheter in central veins such as internal jugular vein and femoral vein for dialysis. However, after this kind of catheter has been used for a long time, sometimes it will stick to the wall, that is, th...

Claims

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