CN104147682A - Central venous catheter capable of preventing thrombus - Google Patents
Central venous catheter capable of preventing thrombus Download PDFInfo
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- CN104147682A CN104147682A CN201410400561.0A CN201410400561A CN104147682A CN 104147682 A CN104147682 A CN 104147682A CN 201410400561 A CN201410400561 A CN 201410400561A CN 104147682 A CN104147682 A CN 104147682A
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Abstract
The invention discloses a central venous catheter capable of preventing thrombus, and belongs to the field of medical instruments. The central venous catheter comprises a catheter body, an outlet in the upper end of the catheter body, a blood inlet and a blood outlet, the blood inlet and the blood outlet are formed in the side wall of the catheter body, the blood outlet is close to the lower end of the catheter body, the distance between the blood outlet and the blood inlet is 3-3.5 cm, and valves are arranged at the blood inlet and the blood outlet respectively; when the catheter is used, the valves are opened, and after the catheter is used, the valves are closed, so that the catheter does not need to be sealed through heparin after being used, blood in the catheter only needs to be flushed away through normal saline, and then the valves are closed. Accordingly, fibrous protein sheaths and catheter opening thrombus are effectively prevented, and blocking is prevented. Meanwhile, the distance between the blood outlet and the blood inlet is appropriate, recirculation is effectively avoided, and safety and reliability are achieved.
Description
Technical field
The present invention relates to medical instruments field, relate in particular to a kind of central venous catheter of preventing thrombosis in advance.
Background technology
The very poor patient of clinical a lot of peripheral blood vessel conditions, needs central venous catheter as venous transfusion path, often can run into thromboembolism problem.In blood dialysis, dialysis catheter is a kind of essential medical apparatus and instruments.Part dialysis patient need to be kept somewhere two-chamber dialysis catheter as internal jugular vein and femoral vein at central vein and use in order to dialysis.Common dialysis catheter, according to the number in conduit cavity road, be divided into have single lumen catheter, double channel catheter and three cavities conduit pipe etc.Typical two-chamber dialysis guide-tube structure, comprise two independently outlet and blood inlet and blood outlets of catheter body, catheter body upper end, wherein blood outlet is positioned at the lower end (tip) of catheter body, and blood inlet is positioned at the sidewall of catheter body bottom.But this conduit all will be used heparin in sealing after use, pre-preventing thrombosis is blocked the mouth of pipe, even if but all still there will be conduit to stop up with heparin in sealing after each use.The clinical middle conduit by obstruction after extracting, can find that there is fibrin sheath and old thrombosis parcel is blocked in conduit mouth, this fibrin sheath be wrapped in duct wall blood inlet place (fibrin sheath be wrapped in import and outlet between, as an ankle socks, encase, subject matter is to block blood inlet).
The main method of preventing clinically at present thromboembolism is to adopt heparin in sealing after dialysis, and heparin in sealing repeatedly not only increases patient medical expense, and the heparin in pipe also can constantly be discharged in blood, increases bleeding risk.The method that the conduit of processing clinically thromboembolism and causing because of fibrin sheath parcel stops up is generally after capsid forms, repeatedly to use urokinase thrombolytic, and urokinase thrombolytic is solution fibrin sheath completely, can only dissolve some microthrombus in fibrin sheath, thereby discharge a little space blood supply stream, pass through.Urokinase thrombolytic repeatedly also has its danger: 1, somewhat expensive, before each dialysis, all want thrombolytic, and the time is long, pretty troublesome, and patient does not bear yet, and 2, urokinase has the complication of systemic bleeding, life-threatening is exactly Complications of Cerebral Hemorrhage.Next is to adopt fibrin sheath Avulsion that fibrin sheath is pulled out, but this operating difficulty is large, and general hospital is difficult for carrying out, and performs the operation and need under radiography, carry out, somewhat expensive.
Summary of the invention
Goal of the invention of the present invention is: for the problem of above-mentioned existence, provide a kind of central venous catheter of preventing thrombosis in advance.
The technical solution used in the present invention is such: a kind of dialysis central venous catheter of preventing thrombosis in advance, comprise outlet, blood inlet and the blood outlet of catheter body, catheter body upper end, described blood inlet and the outlet of described blood are all positioned at the sidewall of catheter body, wherein, described blood outlet is positioned at the position of the close catheter body lower end of catheter body, the distance of described blood outlet and described blood inlet is 3-3.5cm, and described blood inlet and blood exit are provided with valve.
Present inventor finds in clinical practice, why the detained central venous catheter time has been grown can cause conduit to stop up because produce fibrin sheath, be because conduit when not using in human vein, constantly being subject to blood flow impacts, blood runs into the just easy adhesion and aggregation of the rough mouth of pipe here, time has been grown and will form fibrin sheath, and the heparin that tube sealing is used also can constantly be discharged in blood, has increased bleeding risk.
The application is arranged on sidewall by blood inlet and blood outlet, and setting exports corresponding valve with blood inlet and blood, valve open when conduit uses, after conduit uses, by valve closing, after using like this, do not need, with heparin in sealing, to need only and with normal saline, the blood in pipe is washed out, then valve-off yet.Thereby can effectively prevent the formation of fibrin sheath and mouth of pipe thrombosis, prevent from stopping up.Meanwhile, the distance of suitable blood inlet and blood outlet, can effectively avoid blood recirculation.
The application's conduit goes for all central venous catheters, the very poor patient of clinical a lot of peripheral blood vessel conditions, need central venous catheter as venous transfusion path, also often to run into thromboembolism problem, also be all to use heparin in sealing, adopt the application's valve design, just only need to just can solve thrombotic problem with salt water sealing (sealing water) pipe.
As preferred technical scheme: the surrounding of the blood inlet of described catheter body sidewall and blood outlet comprises internal layer and skin, described blood inlet and blood outlet are in internal layer and outer upper shed, and between described internal layer and skin, confining bed is set, described confining bed is connected with pulling-on piece, and the sidewall of catheter body is stretched out in one end of described pulling-on piece.
Described valve design is become to the sandwich of automotive window formula, and pulling-on piece is set as the manual gas shut off of valve, on the one hand guaranteed the smooth and smooth of open surfaces, further reduced the probability that brings out thrombosis, make to prevent the effect of obstruction more; The opening and closing of opening are all very convenient, simple to operate on the other hand.In addition, only near position sandwich establishment structure opening, can enter interlayer from gap by anti-Hemostatic Oral Liquid like this.
As preferred technical scheme: the distance of described blood outlet and described blood inlet is 3cm.
Such distance, can greatly reduce recirculation odds, makes this conduit more safe and reliable.
In sum, owing to having adopted technique scheme, the invention has the beneficial effects as follows: the present invention is arranged on sidewall by blood inlet and blood outlet, and setting exports corresponding valve with blood inlet and blood, valve open when conduit uses, after conduit uses, by valve closing, after using like this, do not need, with heparin in sealing, to need only and with normal saline, the blood in pipe is washed out, then valve-off yet.Thereby can effectively prevent the formation of fibrin sheath and mouth of pipe thrombosis, prevent from stopping up.Meanwhile, the distance of suitable blood inlet and blood outlet, can effectively avoid recirculation, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the confining bed of blood inlet in Fig. 1 and the annexation schematic diagram of pulling-on piece.
Labelling in figure: 1 be catheter body, 11 for internal layer, 12 for outer, 13 for confining bed, 2 for outlet, 3 for blood inlet, 4 for blood outlet, 5 be pulling-on piece.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Embodiment
A kind of dialysis central venous catheter of preventing thrombosis in advance, as Figure 1-3, comprise catheter body 1, two outlets 2 of catheter body 1 upper end, blood inlet 3 and blood outlet 4, blood inlet 3 and blood outlet 4 are all positioned at the sidewall of catheter body 1, wherein, catheter body 1 is the same with conduit with existing common dialysis, for double channel catheter, there is a vertical diaphragm centre, blood outlet 4 is positioned at the position of close catheter body 1 lower end (tip) of catheter body 1, the distance of blood inlet 3 and described blood outlet 4 is 3cm, blood inlet 3 and blood export 4 places and are provided with valve,
The concrete structure of valve is: the sidewall of catheter body 1 comprises internal layer 11 and outer 12, blood inlet 3 and blood outlet 4 are in internal layer 11 and outer 12 upper sheds, and between internal layer 11 and outer 12, confining bed 13 is set, confining bed 13 is connected with pulling-on piece 5, the sidewall of catheter body 1 is stretched out in the upper end of pulling-on piece 5, blood inlet 3 exports 4 confining bed 13 difference separate connection one pulling-on pieces 5 with blood, pulling-on piece 5 is vertical with horizontal line with the line of centres of confining bed 13, thereby can guarantee that confining bed 13 can not drawn skew in being pulled process, make valve design become the opening and closing structure of automotive window formula, guarantee the tightness of opening shutoff, guarantee opening part flat-satin simultaneously, can not form thrombosis,
In the time of need to dialysing, pulling-on piece 5 is upwards pulled, open valve, the internal layer 11 of catheter body 1 sidewall and outer 12 opening are connected; While not needing to dialyse, only need to the blood in conduit be washed out with normal saline, then pulling-on piece 5 be promoted downwards, make the internal layer 11 of catheter body 1 sidewall and outer 12 closure of openings, i.e. valve closing.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. the central venous catheter of preventing thrombosis in advance, comprise outlet, blood inlet and the blood outlet of catheter body, catheter body upper end, it is characterized in that: described blood inlet and the outlet of described blood are all positioned at the sidewall of catheter body, wherein, described blood outlet is positioned at the position of the close catheter body lower end of catheter body, the distance of described blood outlet and described blood inlet is 3-3.5cm, and described blood inlet and blood exit are provided with valve.
2. a kind of central venous catheter of preventing thrombosis in advance according to claim 1, it is characterized in that: the surrounding of the blood inlet of described catheter body sidewall and blood outlet comprises internal layer and skin, described blood inlet and blood outlet are in internal layer and outer upper shed, and between described internal layer and skin, confining bed is set, described confining bed is connected with pulling-on piece, and the sidewall of catheter body is stretched out in one end of described pulling-on piece.
3. a kind of central venous catheter of preventing thrombosis in advance according to claim 1, is characterized in that: the distance of described blood outlet and described blood inlet is 3cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410400561.0A CN104147682A (en) | 2014-08-08 | 2014-08-08 | Central venous catheter capable of preventing thrombus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410400561.0A CN104147682A (en) | 2014-08-08 | 2014-08-08 | Central venous catheter capable of preventing thrombus |
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| Publication Number | Publication Date |
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| CN104147682A true CN104147682A (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410400561.0A Pending CN104147682A (en) | 2014-08-08 | 2014-08-08 | Central venous catheter capable of preventing thrombus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109589485A (en) * | 2018-10-10 | 2019-04-09 | 金领微 | A kind of central venous catheter being not easy to plug |
Citations (7)
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|---|---|---|---|---|
| US20050182352A1 (en) * | 2004-02-12 | 2005-08-18 | Dimatteo Kristian | Dialysis catheter tip |
| CN201257181Y (en) * | 2008-09-19 | 2009-06-17 | 乐普（北京）医疗器械股份有限公司 | Hemodialysis duct |
| CN201631868U (en) * | 2010-03-25 | 2010-11-17 | 山东威高集团医用高分子制品股份有限公司 | Peripherally vein inserted central venous catheter |
| CN201791225U (en) * | 2010-09-20 | 2011-04-13 | 牛丽君 | Peripherally inserted central venous catheter |
| CN202637571U (en) * | 2011-12-31 | 2013-01-02 | 张魁正 | Adjustable long-term double chamber hemodialysis catheter |
| CN103706018A (en) * | 2014-01-09 | 2014-04-09 | 王卫凯 | Anti-displacement tube type ductus venosus |
| CN203989430U (en) * | 2014-08-08 | 2014-12-10 | 厦门大学附属中山医院 | A kind of central venous catheter of preventing thrombosis in advance |
-
2014
- 2014-08-08 CN CN201410400561.0A patent/CN104147682A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050182352A1 (en) * | 2004-02-12 | 2005-08-18 | Dimatteo Kristian | Dialysis catheter tip |
| CN201257181Y (en) * | 2008-09-19 | 2009-06-17 | 乐普（北京）医疗器械股份有限公司 | Hemodialysis duct |
| CN201631868U (en) * | 2010-03-25 | 2010-11-17 | 山东威高集团医用高分子制品股份有限公司 | Peripherally vein inserted central venous catheter |
| CN201791225U (en) * | 2010-09-20 | 2011-04-13 | 牛丽君 | Peripherally inserted central venous catheter |
| CN202637571U (en) * | 2011-12-31 | 2013-01-02 | 张魁正 | Adjustable long-term double chamber hemodialysis catheter |
| CN103706018A (en) * | 2014-01-09 | 2014-04-09 | 王卫凯 | Anti-displacement tube type ductus venosus |
| CN203989430U (en) * | 2014-08-08 | 2014-12-10 | 厦门大学附属中山医院 | A kind of central venous catheter of preventing thrombosis in advance |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109589485A (en) * | 2018-10-10 | 2019-04-09 | 金领微 | A kind of central venous catheter being not easy to plug |
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Application publication date: 20141119 |
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| RJ01 | Rejection of invention patent application after publication |