CN102861373B - Central venous catheter with wall adherence preventing device for dialysis - Google Patents
Central venous catheter with wall adherence preventing device for dialysis Download PDFInfo
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- CN102861373B CN102861373B CN 201210385350 CN201210385350A CN102861373B CN 102861373 B CN102861373 B CN 102861373B CN 201210385350 CN201210385350 CN 201210385350 CN 201210385350 A CN201210385350 A CN 201210385350A CN 102861373 B CN102861373 B CN 102861373B
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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.
Description
Technical field
The present invention relates to a kind of venous duct, particularly a kind of dialysis central venous catheter.
Background technology
In blood dialysis, dialysis catheter is a kind of essential medical apparatus and instruments.Common dialysis catheter, according to the number in conduit cavity road, be divided into single lumen catheter is arranged, double channel catheter and three cavities conduit pipe etc.Typical two-chamber dialysis with guide-tube structure as shown in Figure 1, comprises that catheter body 1, catheter body 1 upper end two independently export 2, blood outlet 3 (tips) of catheter body 1 lower end and the blood inlet 4 of catheter body 1 lower sides.
The part dialysis patient need to be kept somewhere the two-chamber dialysis catheter as internal jugular vein and femoral vein at central vein and use in order to dialysis.But it is adherent that the time that this conduit is used occurs after having grown sometimes, blood inlet 4 places that are the catheter body lower sides are attached on wall of vein, cause blood to draw smoothly from conduit, and then can't complete dialysis, cause the patient life danger (major effect dialysis procedure to occur, because will drawing blood from conduit exactly of dialysis most critical then drawn back blood after the dialyser dialysis again).For this situation, there is no at present good solution.Have and adopt when conduit is made, use laser grooving technique, can reduce to a certain extent adherent generation, but still undesirable in clinical practice, and technological requirement is high, and expensive.
In addition, after the central venous catheter indwelling catheter time has been grown, capital is to form fibrin sheath between blood outlet and blood inlet at catheter tip and sidewall, this fibrin sheath be wrapped in duct wall the blood inlet place (fibrin sheath be wrapped in import and the outlet between, as an ankle socks, encase, subject matter is to block blood inlet), cause blood to draw smoothly, blood flow is poor, how to prevent and process the formation of this fibrin sheath, at first be repeatedly to use the urokinase thrombolytic after capsid forms, and the urokinase thrombolytic is to dissolve away fibrin sheath, can only dissolve some microthrombus in fibrin sheath, thereby discharging a little space blood supply stream passes through.Urokinase thrombolytic repeatedly also has its danger: 1, somewhat expensive, all want thrombolytic before each dialysis, and the time is long, pretty troublesome, and the 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 the 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 to carry out under radiography, somewhat expensive.
Again, the situations such as hypotension, antiotasis be poor, often appear in some critical patients, and at this moment blood vessel is subject to after the negative pressure-pumping of duct wall easily being attached to duct wall blood inlet place and causes blood drainage not smooth, and then can't complete smoothly dialysis, patient's life is threatened.
Summary of the invention
Goal of the invention of the present invention is: for the problem of above-mentioned existence, provide a kind of and can prevent the adherent novel dialytic central venous catheter that also can solve the fibrin sheath problem.
The technical solution used in the present invention is such: a kind of dialysis central venous catheter with anti-wall attaching device, comprise catheter body, the outlet of catheter body upper end, the blood outlet of the blood inlet of catheter body lower sides and catheter body lower end, also be provided with an anti-wall attaching device, described anti-wall attaching device is on described blood inlet top and the sheathed air bag in position of close blood inlet, described air bag comprises air bag main body and the air bag passage be connected with air bag main body, the exit that the other end of described air bag passage extends to the conduit upper end forms blow vent, described air bag main body comprises at least three identical gasbags evenly distributed in same level.
Close in the usual situation of air bag, only have that just inflation struts air bag to gasbag by the air bag passage when clinical judgment is the adherent or thrombosis of conduit, also can adopt the mode such as perfusion normal saline that gasbag is strutted.Just bleeding or extract normal saline out after dialysis finishes closes air bag.
As preferably: described gasbag is three, and is each other 120 ° of angles.
Three gasbags are forked around catheter body formation etc. three, make the outlet of conduit blood be positioned at exactly the vein blood vessel middle position, prevented the generation of adherent phenomenon.
As preferably: vertical with conduit under described gasbag inflated condition.Gasbag is strip under inflated condition.
Like this can so that the blood of conduit outlet to be positioned at the state of vein blood vessel middle position more reliable and more stable.
As preferably: described air bag passage is one.
Adopt an air bag passage, make each gasbag evenly inflate, strut to simultaneously same amplitude blood inlet and blood vessel wall, stability and safety.
As preferably: described air bag passage is close to the catheter body outer wall equably, when inflation the air bag passage away from a side of catheter body and conduit outer wall apart from being not more than 0.5mm.That is the diameter of air bag Channel Perfect while being full of is not more than 0.5mm.Smooth and easy when guaranteeing charge operation, be preferably flat by the air bag channel setting, and sufficient plenum space is arranged like this, can be not blocked up while guaranteeing the inflation of air bag passage simultaneously.
As preferably: described gasbag is strip under inflated condition, and length when air bag is inflated fully is 0.8-1cm, and width is 0.2cm-0.4cm.
Select the air bag of different sizes according to the different length of conduit, as the air bag that the conduit of 13cm is joined 0.8*0.2cm, the conduit of 20cm is joined the air bag of 1.0*0.4cm.Because the Venous choice of the catheter retaining of different length is different, as 13cm and 16cm select to keep somewhere internal jugular vein, 20cm selects indwelling femoral venous, the diameter of internal jugular vein than femoral vein diameter more carefully, so the size of air bag also can be less, and 13cm is applicable to short patient, and 16cm is applicable to the slightly large patient of height, therefore the diameter of vein is also different, and the size of supporting air bag also has difference.
Because if the air bag width is too large, affect vascular cross-section long-pending, thereby affect blood flow, if the air bag width is too little, after inflation, there is no support force, be under pressure after air bag struts and easily give a discount.
Such design, make setting up of air bag passage not affect the diameter of conduit, and air bag passage and conduit outer wall are combined closely, and do not affect the flatness of conduit periphery, can not bring out thrombosis.
As preferably: at described blow vent, be provided with valve.Stability when such design can guarantee airbag-releasing, and the safety while not using air bag.
Gasbag can, according to the clinical aeration quantity of regulating, such as finding in gas replenishment process that blood flow can start to have drawn smoothly, just can not inflated valve-off; And gasbag struts rear length fully only for 0.8-1cm, width be only 0.2cm-0.4cm, only takies very little vascular cross-section and amasss, and the blood flow that can not affect central vein passes through, and possesses again certain support degree.
In sum, owing to having adopted technique scheme, the invention has the beneficial effects as follows: the present invention has set up anti-wall attaching device on in-situ conduit, while having solved well dialysis catheter Preserving time vein blood vessel, blood exports adherent problem, and that for the critical patient, because of situations such as blood pressure are low, causes is adherent applicable too; And after fibrin sheath forms the parcel catheter tip blood flow can't by the time, open air bag, fibrin sheath is strutted, thereby just has segment space blood supply stream to pass through.Such conduit processing technology is simple, with low cost, and Clinical practicability is strong.
The accompanying drawing explanation
Structural representation when Fig. 1 is the embodiment of the present invention 1 gasbag inflation; Fig. 2 is the A-A cutaway view of Fig. 1.
Labelling in figure: 1 be catheter body, 2 for outlet, 3 for blood outlet, 4 for blood inlet, 5 for gasbag, 6 for air bag passage, 7 is blow vent, vein centered by 8,9 is the vein tube wall.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make purpose 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 1
As depicted in figs. 1 and 2, a kind of dialysis central venous catheter with anti-wall attaching device, comprise catheter body 1, the outlet 2 of catheter body 1 upper end, the blood outlet 3 of the blood inlet 4 of catheter body 1 lower sides and catheter body 1 lower end, also be provided with an anti-wall attaching device, described anti-wall attaching device is on described blood inlet 4 tops and the sheathed air bag in position of close blood inlet 4, described air bag comprises air bag main body and the air bag passage 6 be connected with air bag main body, outlet 2 places that the other end of described air bag passage 6 extends to the conduit upper end form blow vent 7, described air bag main body comprises three identical gasbags 5 evenly distributed in same level, three gasbags 5 are 120 ° of angles each other, vertical with catheter body 1 under described gasbag 5 inflated conditions, described air bag passage 6 is one, then three gasbags 5 pool together and are connected with air bag passage 6, described air bag passage 6 is close to catheter body 1 outer wall equably, when inflation, air bag passage 6 is 0.5mm away from a side of catheter body 1 and the distance of conduit outer wall, described gasbag 5 is strip while inflating fully, length is 0.8cm, and width is 0.2cm, and be provided with valve at described blow vent.
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 (7)
1. the dialysis central venous catheter with anti-wall attaching device, comprise catheter body, the outlet of catheter body upper end, the blood outlet of the blood inlet of catheter body lower sides and catheter body lower end, it is characterized in that: also be provided with an anti-wall attaching device, described anti-wall attaching device is on described blood inlet top and the sheathed air bag in position of close blood inlet, described air bag comprises air bag main body and the air bag passage be connected with air bag main body, the exit that the other end of described air bag passage extends to the conduit upper end forms blow vent, described air bag main body comprises at least three identical gasbags evenly distributed in same level.
2. a kind of dialysis central venous catheter with anti-wall attaching device according to claim 1, it is characterized in that: described gasbag is three, and is each other 120 ° of angles.
3. a kind of dialysis central venous catheter with anti-wall attaching device according to claim 1, is characterized in that: vertical with catheter body under described gasbag inflated condition.
4. a kind of dialysis central venous catheter with anti-wall attaching device according to claim 1, it is characterized in that: described air bag passage is one.
5. a kind of dialysis central venous catheter with anti-wall attaching device according to claim 1, it is characterized in that: described air bag passage is close to the catheter body outer wall equably, and when inflation, the air bag passage is not more than 0.5mm away from a side of catheter body and the distance of catheter body outer wall.
6. a kind of dialysis central venous catheter with anti-wall attaching device according to claim 1, it is characterized in that: length when described gasbag is inflated fully is 0.8-1cm, width is 0.2cm-0.4cm.
7. a kind of dialysis central venous catheter with anti-wall attaching device according to claim 1, is characterized in that: at described blow vent, be provided with valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210385350 CN102861373B (en) | 2012-09-25 | 2012-09-25 | Central venous catheter with wall adherence preventing device for dialysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210385350 CN102861373B (en) | 2012-09-25 | 2012-09-25 | Central venous catheter with wall adherence preventing device for dialysis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102861373A CN102861373A (en) | 2013-01-09 |
| CN102861373B true CN102861373B (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210385350 Expired - Fee Related CN102861373B (en) | 2012-09-25 | 2012-09-25 | Central venous catheter with wall adherence preventing device for dialysis |
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| CN (1) | CN102861373B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104274874B (en) * | 2014-10-28 | 2016-11-16 | 郑州迪奥医学技术有限公司 | Blockage resisting hemodialysis conduit |
| CN113144375B (en) * | 2021-04-16 | 2024-04-02 | 上海市胸科医院 | Wall-sticking-preventing double-resistance nano hemodialysis catheter |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0249338A3 (en) * | 1986-06-12 | 1988-12-14 | C.R. Bard, Inc. | Retroperfusion catheter |
| EP1490137B1 (en) * | 2002-03-26 | 2006-06-28 | HALPERIN, Haim | Vascular coupling device |
| WO2008030130A1 (en) * | 2006-09-04 | 2008-03-13 | Alexander Grigorievich Viller | Enforced guiding catheter |
| CN201564855U (en) * | 2009-12-15 | 2010-09-01 | 徐振华 | Peritoneal dialysis device |
| CN201978220U (en) * | 2011-02-18 | 2011-09-21 | 山东新华安得医疗用品有限公司 | Hemodialysis catheter capable of preventing attachment of blood vessel wall |
| CN202822441U (en) * | 2012-09-25 | 2013-03-27 | 厦门大学附属中山医院 | Dialysis central venous catheter with anti-adherence device |
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2012
- 2012-09-25 CN CN 201210385350 patent/CN102861373B/en not_active Expired - Fee Related
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| CN102861373A (en) | 2013-01-09 |
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