CN202822441U - Dialysis central venous catheter with anti-adherence device - Google Patents
Dialysis central venous catheter with anti-adherence device Download PDFInfo
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- CN202822441U CN202822441U CN 201220533608 CN201220533608U CN202822441U CN 202822441 U CN202822441 U CN 202822441U CN 201220533608 CN201220533608 CN 201220533608 CN 201220533608 U CN201220533608 U CN 201220533608U CN 202822441 U CN202822441 U CN 202822441U
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- catheter
- air bag
- central venous
- blood
- dialysis
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Abstract
The utility model discloses a dialysis central venous catheter with an anti-adherence device. The dialysis central venous catheter with the anti-adherence device comprises a catheter body, an exit, a blood inlet and a blood outlet. A balloon is arranged on the upper portion of the blood inlet and is close to the blood inlet. The balloon comprises a balloon main body and a balloon channel which is connected with the balloon main body. The other end of the balloon channel stretches into the exit on the upper portion of the catheter and therefore an air vent is formed. The balloon main body comprises at least three same balloon covers, wherein the three same balloon covers are evenly arranged in a same horizontal plane. The dialysis central venous catheter with the anti-adherence device well solves problems of adherence of the blood inlet when the dialysis catheter chronically stays in veins and adherence is caused by critically ill patients because of low blood pressure and the like. When a wrapping catheter tip is formed by fibrin shells and blood can not pass through, an operator opens the balloon and opens the fibrin shells, and therefore partial space is provided to ensure that the blood passes through. The dialysis central venous catheter with the anti-adherence device is simple in production process, low in cost and strong in clinical practicability.
Description
Technical field
This utility model 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, be divided into according to the number in conduit cavity road single lumen catheter is arranged, double channel catheter and three cavities conduit pipe etc.Typical two-chamber dialysis 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 with guide-tube structure as shown in Figure 1.
The part dialysis patient need to be kept somewhere the two-chamber dialysis catheter at central vein such as internal jugular vein and femoral 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 the wall of vein, cause blood to draw smoothly from conduit, and then can't finish dialysis, cause the patient life danger (major effect dialysis procedure to occur, because will drawing blood from conduit exactly of dialysis most critical drawn back blood after then dialysing through dialyser 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, the capital is to form fibrin sheath between blood outlet and the 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 after capsid forms, repeatedly to use the urokinase thrombolytic, and the urokinase thrombolytic is to dissolve away fibrin sheath, can only dissolve some microthrombus in the fibrin sheath, pass through thereby discharge a little space blood supply stream.Urokinase thrombolytic repeatedly also has its danger: 1, somewhat expensive, all want thrombolytic before each dialysis, and the time is long, and is 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 operation need to be carried out somewhat expensive under radiography.
Again, the situations such as hypotension, antiotasis be poor often appear in some critical patients, and at this moment blood vessel is subject to easily being attached to duct wall blood inlet place behind the negative pressure-pumping of duct wall and causes blood drainage not smooth, and then can't finish smoothly dialysis, patient's life is threatened.
The utility model content
Goal of the invention of the present utility model 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 adopted in the utility model 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 that links to each other 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, and described air bag main body comprises at least three at the evenly distributed identical gasbag of 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 the 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, so that each gasbag is evenly inflated, 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, and the air bag passage is not more than 0.5mm away from a side of catheter body and the distance of conduit outer wall when inflation.That is the diameter of air bag Channel Perfect when being full of is not more than 0.5mm.Smooth and easy when guaranteeing charge operation is flat with the air bag channel setting preferably, and sufficient plenum space is arranged like this, can be not blocked up when guaranteeing simultaneously the inflation of air bag passage.
As preferably: described gasbag is strip under inflated condition, and the 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, the air bag of then joining 0.8*0.2cm such as the conduit of 13cm, the conduit of 20cm is then joined the air bag of 1.0*0.4cm.Because the Venous choice of the catheter retaining of different length is different, select to keep somewhere internal jugular vein such as 13cm and 16cm, 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 fit to short patient, and 16cm is fit 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, then affect vascular cross-section long-pending, thereby affect blood flow, if the air bag width is too little, then after inflation, there is not support force, be under pressure after air bag struts and easily give a discount.
Such design so that the air bag passage set up the diameter that does not affect conduit, 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: be provided with valve at described blow vent.Stability when such design can guarantee airbag-releasing, and the safety when not using air bag.
Gasbag can according to the clinical aeration quantity of regulating, such as finding in the gas replenishment process that blood flow can begin to have drawn smoothly, just can not inflated valve-off; And gasbag struts rear length fully only for 0.8-1cm, and width only be 0.2cm-0.4cm, namely 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 beneficial effects of the utility model are: this utility model has been set up anti-wall attaching device at in-situ conduit, the adherent problem of blood outlet when having solved well dialysis catheter Preserving time vein blood vessel, what situation caused because blood pressure is low etc. for the critical patient is adherent applicable too; And when blood flow can't pass through behind the fibrin sheath formation parcel catheter tip, open air bag, fibrin sheath is strutted, thereby just have segment space blood supply stream to pass through.Such conduit processing technology is simple, with low cost, and Clinical practicability is strong.
Description of drawings
Structural representation when Fig. 1 is the inflation of this utility model embodiment 1 gasbag;
Fig. 2 is the A-A cutaway view of Fig. 1.
Labelling among the 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, this utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining this utility model, and be not used in restriction this utility model.
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 that links to each other 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 at the evenly distributed identical gasbag 5 of same level, three gasbags 5 are 120 ° of angles each other, and are vertical with catheter body 1 under described gasbag 5 inflated conditions; Described air bag passage 6 is one, namely then three gasbags 5 pool together and link to each other with air bag passage 6, described air bag passage 6 is close to catheter body 1 outer wall equably, air bag passage 6 is 0.5mm away from a side of catheter body 1 and the distance of conduit outer wall when inflation, described gasbag 5 is strip when inflating fully, length is 0.8cm, and width is 0.2cm; And be provided with valve at described blow vent.
The above only is preferred embodiment of the present utility model; not in order to limit this utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. 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 that links to each other 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, and described air bag main body comprises at least three at the evenly distributed identical gasbag of 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 the 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 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 when inflation.
6. a kind of dialysis central venous catheter with anti-wall attaching device according to claim 1, it is characterized in that: the 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: be provided with valve at described blow vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220533608 CN202822441U (en) | 2012-09-25 | 2012-09-25 | Dialysis central venous catheter with anti-adherence device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220533608 CN202822441U (en) | 2012-09-25 | 2012-09-25 | Dialysis central venous catheter with anti-adherence device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202822441U true CN202822441U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220533608 Withdrawn - After Issue CN202822441U (en) | 2012-09-25 | 2012-09-25 | Dialysis central venous catheter with anti-adherence device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102861373A (en) * | 2012-09-25 | 2013-01-09 | 厦门大学附属中山医院 | Central venous catheter with wall adherence preventing device for dialysis |
-
2012
- 2012-09-25 CN CN 201220533608 patent/CN202822441U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102861373A (en) * | 2012-09-25 | 2013-01-09 | 厦门大学附属中山医院 | Central venous catheter with wall adherence preventing device for dialysis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130327 Effective date of abandoning: 20131225 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130327 Effective date of abandoning: 20131225 |
|
| RGAV | Abandon patent right to avoid regrant |