CN203263901U - Hemodialysis conduit - Google Patents
Hemodialysis conduit Download PDFInfo
- Publication number
- CN203263901U CN203263901U CN 201320078776 CN201320078776U CN203263901U CN 203263901 U CN203263901 U CN 203263901U CN 201320078776 CN201320078776 CN 201320078776 CN 201320078776 U CN201320078776 U CN 201320078776U CN 203263901 U CN203263901 U CN 203263901U
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- blood
- chamber
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- blood drawing
- opening
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Abstract
The utility model provides a hemodialysis conduit (1), comprising a blood transfusion cavity (2), a blood drawing cavity (3) and an air bag cavity (4), which are mutually independent; an blood transfusing opening (21) is arranged on the blood transfusing cavity (2), and a blood drawing opening (31) is formed in the blood drawing cavity (3); the hemodialysis conduit (1) also comprises an aid sac (5) which is arranged at one side, closer to the tail end of the hemodialysis conduit (1), of the blood drawing cavity opening (31) in a mode of expanding towards the side of the blood drawing cavity opening (31); and the air sac cavity (4) is communicated with the air sac (5). Attached vessel walls in the vicinity of the blood drawing cavity can be reliably prevented from causing blockage by the support action after the air sac (5) is inflated and expanded even if the section force generated at the blood drawing cavity is larger or a patient slightly moves, and the hemodialysis conduit is simple in structure and easy to operate and can achieve good curing effect.
Description
Technical field
This utility model relates to the hemodialysis catheter that is applied to technical field of medical instruments, relates in particular to the hemodialysis catheter of the attached blood vessel wall of Fang Zhi Stickers.
Background technology
Blood purification (blood purification) technology refers to continuously various or removes discontinuously the general name of the method for moisture too much in body, solute etc., and we often are called hemodialysis in daily life.The method of blood purification comprises kidney replacement therapy, hemoperfusion, immunoadsorption, endotoxin absorption and plasmapheresis etc.Each blood purification mode all respectively has characteristics, and respectively is applicable to various disease or various disease state.But no matter the blood purification of which kind of type, all must first set up effective venous channel, claims again blood access, draws blood in patient body from arterial end, being input in human body by vein end after processing through purging in vitro again.Therefore setting up effectively, unobstructed blood access is the primary condition that realizes blood purification.
The method of often using clinically at present the disposable blood dialysis catheter to puncture is set up blood access and is carried out blood purification, in therapeutic process, often occur attaching the situation of blood vessel wall because negative pressure makes the arterial end opening, cause blood flow to flow out in the patient body not smooth, treatment can't normally be carried out, in the situation that the serious conduit inner blood that occurs stops flowing and forming thrombosis, damage filter, finally make and treat unsuccessfully, not only increased patient's misery, even may cause life danger.
In order to prevent attaching the generation of the situation of blood vessel wall because negative pressure makes the arterial end opening, a kind of hemodialysis catheter of anti-glued blood vessel wall is disclosed in patent documentation 1, it is characterized in that: the latter end at dialysis catheter is provided with the level and smooth changeover portion of indent, is provided with the annulus projection on changeover portion.But in the hemodialysis catheter of the anti-glued blood vessel wall of patent documentation 1, the effect of the support blood vessels wall of annulus projection is not obvious, if annular projection too greatly intravasation is difficult, the too little effect that does not have the support blood vessels wall.
In addition, a kind of hemodialysis catheter of anti-glued blood vessel wall is also disclosed in patent documentation 2, it is characterized in that: be provided with two independently tube chambers in this hemodialysis catheter, be respectively and draw blood vessel and blood back pipe, this end that draws blood vessel and blood back pipe has respectively blood drawing chamber opening and the chamber opening of transfusing blood, blood drawing chamber open section is domes, and it is middle inboard that the chamber opening of drawing blood is positioned at the arch bending.But, in the hemodialysis catheter of the anti-glued blood vessel wall of patent documentation 2, when carrying out hemodialysis, the suction that the flow of 250ml/ minute produces is larger, in the situation that there is no physical support, only rely on guiding-tube bend, be difficult to play the chamber opening plaster that prevents from drawing blood and be attached to the effect of blood vessel wall.
The prior art document
Patent documentation
Patent documentation 1: application number CN201120041217.9
Patent documentation 2: application number CN201220228615.6
The utility model content
In order to solve above problems of the prior art, this utility model provides a kind of blood drawing chamber Kai Kou Stickers that can prevent reliably hemodialysis catheter to be attached to simple in structure, the easily operation and can realize the hemodialysis catheter of good therapeutic effect of blood vessel wall.
The technical scheme that this utility model technical solution problem adopts is: above-mentioned hemodialysis catheter comprises blood drawing chamber, blood transfusion chamber and the airbag chamber that is mutually independent, be provided with blood drawing chamber opening in above-mentioned blood drawing chamber, be provided with blood transfusion chamber opening in above-mentioned blood transfusion chamber, above-mentioned hemodialysis catheter also comprises the air bag that is interconnected with above-mentioned airbag chamber, and this air bag is arranged on end one side of the more close above-mentioned hemodialysis catheter of above-mentioned blood drawing chamber opening in the mode that expands to above-mentioned blood drawing chamber opening one side.
Above-mentioned airbag chamber is arranged at the blood drawing chamber and the intersection in the chamber of transfusing blood.
The diameter of above-mentioned airbag chamber is 0.5～1.0mm.
The spacing of above-mentioned air bag and above-mentioned blood drawing chamber opening is 3～6mm.
The gas capacity of above-mentioned air bag is 1.0～2.0ml
The beneficial effect that this utility model has is: with airbag aeration, due to the supporting role after the airbag aeration expansion, even in the situation that the suction of blood drawing chamber opening generation is large or patient's light activity, also can prevent from reliably drawing blood the chamber opening to attach blood vessel wall and result in blockage, and simple in structure, easy operation can realize good therapeutic effect.
Description of drawings
Fig. 1 means the schematic diagram of the terminal part of hemodialysis catheter of the present utility model.
Fig. 2 is the sectional view of hemodialysis catheter of the present utility model.
The explanation of Reference numeral
1: hemodialysis catheter
2: the chamber of transfusing blood
21: the chamber opening of transfusing blood
3: the chamber of drawing blood
31: the chamber opening of drawing blood
4: airbag chamber
5: air bag
The specific embodiment
Below, with reference to accompanying drawing, embodiment of the present utility model is described.
Fig. 1 means the schematic diagram of the terminal part of hemodialysis catheter 1 of the present utility model.Fig. 2 is the sectional view of hemodialysis catheter 1 of the present utility model.As depicted in figs. 1 and 2, be provided with 3 separate tube chambers in hemodialysis catheter 1, be respectively transfuse blood chamber 2, blood drawing chamber 3 and airbag chamber 4.Be provided with blood drawing chamber opening 31 in blood drawing chamber 30, blood is inhaled into the blood drawing chamber 30 of hemodialysis catheter 1 via blood drawing chamber opening 31, and is transported to defecator.Be provided with in the chamber 2 of transfusing blood the chamber opening 21 of transfusing blood, the blood after purifying by purifier returns to human body via blood transfusion chamber 20 and the chamber opening 21 of transfusing blood.Airbag chamber 4 is arranged at the interior blood transfusion chamber 2 of hemodialysis catheter 1 and the intersection in the chamber 3 of drawing blood, and the cross section is the toroidal of diameter 0.5mm.
In addition, hemodialysis catheter 1 also comprises the air bag 5 that is interconnected with airbag chamber 4, air bag 5 is arranged on end one side (namely with blood flow to an opposite side) of the more close hemodialysis catheter 1 of blood drawing chamber opening 31 in the mode that expands to blood drawing chamber opening 31 1 sides, wherein, air bag 5 is 4mm with the spacing of the chamber opening 31 of drawing blood.Because air bag 5 and airbag chamber 4 are interconnected, therefore can inflate via 4 pairs of air bags 5 of airbag chamber.In addition, as the method that makes air bag 5 to blood drawing chamber opening 31 1 sides expansions, for example can air bag 5 is bonding with blood transfusion chamber 2 one sides (namely with the chamber opening 31 opposite sides of drawing blood) of hemodialysis catheter 1.
When using hemodialysis catheter 1 to treat, be at air bag 5 carry out hemodialysis catheter 1 under the state of contraction put the pipe operation, thus, air bag 5 can opposed pipe operation not produce obstruction, can similarly put the pipe operation with the hemodialysis catheter that is not provided with air bag, so the simple in structure and easy operation of hemodialysis catheter 1.Putting after pipe operation completes, utilize the aerating device that is connected with airbag chamber 4 that air bag 5 is inflated, make air bag 5 only to blood drawing chamber opening 31 1 sides (chamber 3 one sides of drawing blood) expansion, for example, air or the carbon dioxide of 1.0～2.0ml can be filled with air bag 5.Air bag 5 after expansion plays the effect of the blood vessel wall that supports chamber opening 31 1 sides of drawing blood, thus, even in the situation that the suction of blood drawing chamber opening 31 generations is large or patient's light activity, also can prevent from reliably drawing blood chamber opening 31 to attach blood vessel wall and result in blockage, realizing good therapeutic effect.
In addition, be not particularly limited for cross sectional shape and the size of airbag chamber 4, the diameter of preferred airbag chamber 4 is 0.5～1.0mm, thus can be in the situation that do not hinder blood flow and quickly air bag 5 is inflated.
In the present embodiment, air bag 5 is about 4mm with the spacing of the chamber opening 31 of drawing blood, but this utility model is not limited in this, and preferred air bag 5 is 3～6mm with the spacing of the chamber opening 31 of drawing blood.In addition, be not particularly limited for the size of air bag 5, as long as can guarantee air bag 5 not because of the excessive expansion artery-clogging, the gas capacity of preferred air bag 5 is 1.0～2.0ml.The material of air bag 5 also is not particularly limited, so long as harmless medical material gets final product.
Claims (5)
1. hemodialysis catheter is characterized in that:
Described hemodialysis catheter comprises blood drawing chamber, blood transfusion chamber and the airbag chamber that is mutually independent,
Be provided with blood drawing chamber opening in described blood drawing chamber, be provided with blood transfusion chamber opening in described blood transfusion chamber,
Described hemodialysis catheter also comprises the air bag that is interconnected with described airbag chamber, and this air bag is arranged on end one side of the more close described hemodialysis catheter of described blood drawing chamber opening in the mode that expands to described blood drawing chamber opening one side.
2. hemodialysis catheter as claimed in claim 1 is characterized in that:
Described airbag chamber is arranged at the blood drawing chamber and the intersection in the chamber of transfusing blood.
3. hemodialysis catheter as claimed in claim 2 is characterized in that:
The diameter of described airbag chamber is 0.5～1.0mm.
4. hemodialysis catheter as claimed in claim 1 is characterized in that:
The spacing of described air bag and described blood drawing chamber opening is 3～6mm.
5. hemodialysis catheter as claimed in claim 4 is characterized in that:
The gas capacity of described air bag is 1.0～2.0ml.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320078776 CN203263901U (en) | 2013-02-20 | 2013-02-20 | Hemodialysis conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320078776 CN203263901U (en) | 2013-02-20 | 2013-02-20 | Hemodialysis conduit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203263901U true CN203263901U (en) | 2013-11-06 |
Family
ID=49494405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320078776 Expired - Fee Related CN203263901U (en) | 2013-02-20 | 2013-02-20 | Hemodialysis conduit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203263901U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104274874A (en) * | 2014-10-28 | 2015-01-14 | 郑州迪奥医学技术有限公司 | Anti-clogging hemodialysis catheter |
| CN105944169A (en) * | 2016-06-15 | 2016-09-21 | 中南大学湘雅三医院 | Anti-infection hemodialysis pipe and use method thereof |
| CN106039534A (en) * | 2016-07-10 | 2016-10-26 | 南华大学附属第医院 | Blood purification catheter with balloon |
-
2013
- 2013-02-20 CN CN 201320078776 patent/CN203263901U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104274874A (en) * | 2014-10-28 | 2015-01-14 | 郑州迪奥医学技术有限公司 | Anti-clogging hemodialysis catheter |
| CN105944169A (en) * | 2016-06-15 | 2016-09-21 | 中南大学湘雅三医院 | Anti-infection hemodialysis pipe and use method thereof |
| CN106039534A (en) * | 2016-07-10 | 2016-10-26 | 南华大学附属第医院 | Blood purification catheter with balloon |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20140220 |