CN203507279U - Single-cavity central venous catheter - Google Patents
Single-cavity central venous catheter Download PDFInfo
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- CN203507279U CN203507279U CN201320630566.3U CN201320630566U CN203507279U CN 203507279 U CN203507279 U CN 203507279U CN 201320630566 U CN201320630566 U CN 201320630566U CN 203507279 U CN203507279 U CN 203507279U
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- hard sleeve
- central venous
- venous catheter
- conduit
- catheter
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Abstract
The utility model discloses a single-cavity central venous catheter which solves the problems that when in-vivo blood vessel fistulization is carried out by means of a single-cavity central venous catheter in the prior art through an operation, the puncture rate is not high, the catheter is prone to being bent in vivo, and blood vessel fistula is blocked. According to the technical scheme, the single-cavity central venous catheter comprises a catheter body, wherein the front section of the catheter body is provided with a front hard sleeve in a sleeved mode and the rear section of the catheter body is provided with a rear hard sleeve in a sleeved mode. The single-cavity central venous catheter is simple in structure, easy and convenient to operate and capable of keeping smooth for a long time and improves the puncture success rate.
Description
Technical field
This utility model relates to a kind of armarium, specifically a kind of single lumen central venous catheter for Vessel fistula in human or animal body.
Background technology
Central venous catheter is a kind of blood vessel inner tube, can be positioned over tremulous pulse and intravenous for Vessel fistula in body.In order to reduce the damage to tunica intima, current medical center venous duct has adopted under body temperature condition polyurethane material that can deliquescing mostly.This class conduit is of many uses, is mainly used in measuring the shorter vascular intervention operations of time of being detained in blood vessel such as central venous pressure, sample of blood, drawn and injection of medicine or solution.At present single lumen central venous catheter is on the market of a great variety, can both meet greatly treatment medically and the demand of research.
Single lumen central venous catheter is during for Vessel fistula in human or animal body the Vessel fistula of hepatic vein, hepatic vein or mesenteric vein (as carry out), because the conduit stroke that punctures is in vivo long and need to keep fistula to be detained for a long time in body, and keeps unimpeded.And at present the conduit of single lumen central venous catheter polyurethane material used penetrates deliquescing under body temperature condition after blood vessel, the position of easily causing conduit to fix in vivo or pass skin forms acute angle shape bending, conduit is stopped up, thereby cause blood to extract, vascular fistula lost efficacy.
Summary of the invention
The purpose of this utility model is in order to solve the problems of the technologies described above, provide a kind of simple in structure, easy and simple to handle, improve puncture success rate, can keep conduit to be detained for a long time and unobstructed single lumen central venous catheter.
Technical scheme comprises conduit, and described conduit leading portion cover has front hard sleeve, and back segment cover has rear hard sleeve.
Described front hard sleeve corresponds in supravasal position: after having punctured, front hard sleeve is just in time positioned at the position of being close to body puncture place vessel outer wall; Described rear hard sleeve corresponds in supravasal position: punctured after rear one-tenth, rear hard sleeve is just in time positioned at skin surface puncture place.
The length of described front hard sleeve is 25-35mm, and the length of described rear hard sleeve is 45-50mm.
The wall thickness of described front hard sleeve and rear hard sleeve is 0.8-1.2mm.
Inventor analyzes and studies the reason of puncture failure, finds that acute angle shape bending very easily occurs at two places this class conduit after wearing into puncture procedure, and the one, the position of vessel outer wall is close in site of puncture in vivo, and the 2nd, in skin surface puncture place.That is to say that the intensity that improves conduit at above-mentioned two places just can address the above problem.This utility model has carried out simple modifications on the basis of existing general single lumen central venous catheter, two sections of hard sleeves on existing conduit, have been added, thereby solve the problems of the technologies described above, described hard sleeve can adopt PVC or silica gel material, can adopt the method for stickup that hard sleeve is bonded on conduit fixing.The method that adopts local suit hard sleeve is the hardness of strong high whole conduit significantly not, and normally carrying out of impact puncture, has met conduit bending part simultaneously and proposed high-intensity requirement, is convenient to conduit fixing and knotting in vivo, guarantees the unobstructed of conduit.This utility model is simple in structure, easy and simple to handle, greatly improve puncture success rate, can keep conduit unobstructed for a long time, is specially adapted to Vessel fistula in human or animal body.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Fig. 2 is the state diagram after this utility model puncture.
Wherein, before 1-conduit, 2-, after hard sleeve, 3-, hard sleeve, 4-blood vessel, 5-skin are started place.
The specific embodiment
Below in conjunction with accompanying drawing, this utility model is further explained to explanation:
With reference to Fig. 1, this novel single lumen central venous catheter comprises conduit 1, and the leading portion of described conduit 1 is set with front hard sleeve 2, and back segment is set with rear hard sleeve 2, and 2,3 of described conduit and forward and backward hard sleeves adopt adhesive of medical to carry out bonding.The length of described front hard sleeve 2 is 25-35mm, and the length of described rear hard sleeve 3 is 45-50mm; The wall thickness of described front hard sleeve 2 and rear hard sleeve 3 is 0.8-1.2mm.
Operating process:
The piercing method of single lumen central venous catheter is with existing piercing method, take portal vein puncture as example, be specially: first stomach wall is done a wound now, puncture needle is penetrated to (human body or animal body) in body by the skin place of starting 5 and insert again portal vein, confirm that puncture needle is after the blood vessel 4 of vein is interior, from the external one end of puncture needle, the seal wire inserting in puncture needle is pushed into pylic blood vessel 4, when keeping seal wire in blood vessel 4, exit puncture needle, again conduit 1 is enclosed within to seal wire and is positioned at the extracutaneous other end, along seal wire, the front end of conduit 1 is pushed to pylic blood vessel 4, now, front hard sleeve 2 on conduit 1 is just in time positioned at the position of blood vessel 4 outer walls of being close to body puncture place vein, rear hard sleeve 3 is just in time positioned at skin surface and starts 5 places, place (concrete state is referring to Fig. 2), finally first fixed knot is beaten on front hard sleeve 2, A/C 1 in vivo, then seal wound, second fixed knot beaten on rear hard sleeve 3, A/C 1 in vitro, the concrete same prior art of knotting method.
Claims (4)
1. a single lumen central venous catheter, comprises conduit, it is characterized in that, described conduit leading portion cover has front hard sleeve, and back segment cover has rear hard sleeve.
2. single lumen central venous catheter as claimed in claim 1, is characterized in that, described front hard sleeve corresponds in supravasal position: after having punctured, front hard sleeve is just in time positioned at the position of being close to body puncture place vessel outer wall; Described rear hard sleeve corresponds in supravasal position: after having punctured, rear hard sleeve is just in time positioned at skin surface puncture place.
3. single lumen central venous catheter as claimed in claim 1 or 2, is characterized in that, the length of described front hard sleeve is 25-35mm, and the length of described rear hard sleeve is 45-50mm.
4. single lumen central venous catheter as claimed in claim 1 or 2, is characterized in that, the wall thickness of described front hard sleeve and rear hard sleeve is 0.8-1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320630566.3U CN203507279U (en) | 2013-10-12 | 2013-10-12 | Single-cavity central venous catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320630566.3U CN203507279U (en) | 2013-10-12 | 2013-10-12 | Single-cavity central venous catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203507279U true CN203507279U (en) | 2014-04-02 |
Family
ID=50366266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320630566.3U Expired - Fee Related CN203507279U (en) | 2013-10-12 | 2013-10-12 | Single-cavity central venous catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203507279U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109200441A (en) * | 2018-11-01 | 2019-01-15 | 郑州大学第附属医院 | A kind of thrombolysis catheter device through jugular vein treatment thrombus |
-
2013
- 2013-10-12 CN CN201320630566.3U patent/CN203507279U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109200441A (en) * | 2018-11-01 | 2019-01-15 | 郑州大学第附属医院 | A kind of thrombolysis catheter device through jugular vein treatment thrombus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20141012 |
|
| EXPY | Termination of patent right or utility model |