CN203525076U - Countercurrent-resistant remaining needle - Google Patents

Countercurrent-resistant remaining needle Download PDF

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Publication number
CN203525076U
CN203525076U CN201320626869.8U CN201320626869U CN203525076U CN 203525076 U CN203525076 U CN 203525076U CN 201320626869 U CN201320626869 U CN 201320626869U CN 203525076 U CN203525076 U CN 203525076U
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CN
China
Prior art keywords
catheter
preventing film
counterflow
countercurrent
reverse flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320626869.8U
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Chinese (zh)
Inventor
胡文忠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SUZHOU YASI PRECISION MOLD CO Ltd
Original Assignee
SUZHOU YASI PRECISION MOLD CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Priority to CN201320626869.8U priority Critical patent/CN203525076U/en
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Publication of CN203525076U publication Critical patent/CN203525076U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A countercurrent-resistant remaining needle comprises a puncture steel needle assembly and a remaining catheter assembly. The remaining catheter assembly comprises a remaining catheter and a catheter base which are communicated with each other, wherein the remaining catheter is fixed to the hollow catheter base and a countercurrent-resistant film is arranged in the catheter base; the countercurrent-resistant film is of a circular arc structure and an arc protrusion faces the infusion liquid flowing direction and a seam is formed in the arc protrusion of the countercurrent-resistant film. According to the countercurrent-resistant remaining needle, the countercurrent-resistant film is adopted by a blood-returning-resistant device, the structure is reasonable, the purpose of blood-returning resistance is achieved, the blood-returning-resistant effect is good, medical safety is guaranteed, pain of a patient is relieved, and unnecessary medical dispute is avoided; the countercurrent-resistant film is arranged in a needle base and waste of liquid medicine is avoided.

Description

Reverse flow resistant indwelling needle
Technical field
This utility model relates to the infusion set of using while carrying out venous transfusion to clinical patients in a kind of medical field, relates in particular to a kind of reverse flow resistant indwelling needle of clinical puncture transfusion use.
Background technology
At present, the use of remaining needle is increasingly extensive clinically, during use, by puncture draw point guiding inlying catheter, enter the vein blood vessel of human body, see after blood back, confirm to puncture successfully, the draw point that will puncture is extracted out, and inlying catheter is retained in vein blood vessel, external infusion utensil, medicinal liquid is inputted human body by inlying catheter.Operator see after blood back, a hand-tight vein blood vessel of pressing for palpus, and another hands is extracted puncture draw point out and is connected fast ready infusion utensil, infuses.Now, as unskilled in operational motion or by tight vein blood vessel, will leak blood, leakage, easily Infection Action person.In addition, after carrying, liquid because not changing in time transfusion bottle or pulling out pin, tends to occur the situation of backflow of blood, i.e. blood back phenomenon.Because blood is in pipeline, clotting mechanism can be activated very soon, causes thrombosis, and the serious malpractice such as nosocomial infection, septicemia even can occur pipe blocking, has increased patient's misery, causes unnecessary medical tangle.
Summary of the invention
The utility model proposes a kind of reverse flow resistant indwelling needle, can puncture and insert after inlying catheter at vein, while exiting puncture needle, blood is not outflowed, meanwhile, avoid the blood back phenomenon in infusion process.
For achieving the above object, the technical solution adopted in the utility model is: a kind of reverse flow resistant indwelling needle, comprise puncture draw point molectron and inlying catheter molectron, described inlying catheter molectron comprises inlying catheter and the catheter block being interconnected, it is mid-stays on the catheter block that conduit is fixed on inner hollow, and described catheter block inside is provided with counterflow-preventing film; Described counterflow-preventing film be arc-shaped structure and arc convex towards transfusion liquid flow direction, the arc convex place of described counterflow-preventing film is provided with cracks.
Related content in technique scheme is explained as follows:
1,, in technique scheme, the arc convex place of described counterflow-preventing film is provided with " one " font and cracks.
2,, in technique scheme, the arc convex place of described counterflow-preventing film is provided with " ten " font and cracks.
3,, in technique scheme, described counterflow-preventing film is elastic material membrane.
4,, in technique scheme, described elastic material membrane is pellosil.
5, in technique scheme, described catheter block is coordinated and is formed by conduit front stall and conduit back seat, and described counterflow-preventing film is arranged on the inside of conduit front stall and conduit back seat cooperation place.
6,, in technique scheme, described conduit front stall and conduit back seat are provided with corresponding snap close.
Due to the utilization of technique scheme, the advantage that this utility model compared with prior art has is:
Blood return preventer of the present utility model adopts counterflow-preventing film, rational in infrastructure, reach anti-return blood object, and blood return prevention is effective, has ensured medical safety, has alleviated patient's misery, avoids unnecessary medical tangle.
Accompanying drawing explanation
In order to be illustrated more clearly in this utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of this utility model embodiment;
Fig. 2 is the structure for amplifying schematic diagram of counterflow-preventing film for this utility model;
Fig. 3 is the plan structure schematic diagram of counterflow-preventing film shown in Fig. 2;
Fig. 4 is conduit front stall structural representation for this utility model;
Fig. 5 is that this utility model has conduit rear seat construction schematic diagram.
In above accompanying drawing: 1, conduit front stall; 2, conduit back seat; 3, snap close; 4, counterflow-preventing film; 5, crack.
The specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is only this utility model part embodiment, rather than whole embodiment.Embodiment based in this utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of this utility model protection.
Embodiment:
As shown in Fig. 1~5, a kind of reverse flow resistant indwelling needle, comprise puncture draw point molectron and inlying catheter molectron, described inlying catheter molectron comprises inlying catheter (not shown) and the catheter block being interconnected, wherein inlying catheter is fixed on the catheter block of inner hollow, and described catheter block inside is provided with counterflow-preventing film 4; Described counterflow-preventing film 4 be arc-shaped structure and arc convex towards transfusion liquid flow direction, the arc convex place of described counterflow-preventing film 4 is provided with cracks 5.
The arc convex place of described counterflow-preventing film 4 is provided with " one " font and cracks 5.
The arc convex place of described counterflow-preventing film 4 is provided with " ten " font and cracks 5.
Described counterflow-preventing film 4 is elastic material membrane.Described elastic material membrane is pellosil.
Described catheter block is coordinated and is formed by conduit front stall 1 and conduit back seat 2, and described counterflow-preventing film 4 is arranged on the inside of conduit front stall 1 and conduit back seat 2 cooperation places.
On described conduit front stall 1 and conduit back seat 2, be respectively equipped with corresponding snap close 3, the snap close in figure on conduit back seat 2 is not shown.
This utility model in use, due to the liquid pressure effect of infusion medicinal liquid, makes cracking of counterflow-preventing film 45 be opened and be conducting state, liquid communication; When medicinal liquid drips off, the pressure of air is not enough to cracking of counterflow-preventing film 45 to open, what simultaneously the pressure in human body also cannot make counterflow-preventing film 4 cracks 5 from reverse opening, 4 one-tenth of counterflow-preventing films are closed dress state, prevent blood backflow, avoid the generation of blood back phenomenon, can not have the risk that patient's health of human body is caused to significant damage, avoided doctor-patient dispute.
More than show and described ultimate principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; this utility model is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present utility model; do not departing under the prerequisite of this utility model spirit and scope; this utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed this utility model.The claimed scope of this utility model is defined by appending claims and equivalent thereof.

Claims (7)

1. a reverse flow resistant indwelling needle, comprise puncture draw point molectron and inlying catheter molectron, described inlying catheter molectron comprises inlying catheter and the catheter block being interconnected, wherein inlying catheter is fixed on the catheter block of inner hollow, it is characterized in that: described catheter block inside is provided with counterflow-preventing film; Described counterflow-preventing film be arc-shaped structure and arc convex towards transfusion liquid flow direction, the arc convex place of described counterflow-preventing film is provided with cracks.
2. reverse flow resistant indwelling needle according to claim 1, is characterized in that: the arc convex place of described counterflow-preventing film is provided with " one " font and cracks.
3. reverse flow resistant indwelling needle according to claim 1, is characterized in that: the arc convex place of described counterflow-preventing film is provided with " ten " font and cracks.
4. according to the reverse flow resistant indwelling needle described in claims 1 to 3, it is characterized in that: described counterflow-preventing film is elastic material membrane.
5. according to the arbitrary described reverse flow resistant indwelling needle of claim 4, it is characterized in that: described elastic material membrane is pellosil.
6. reverse flow resistant indwelling needle according to claim 1, is characterized in that: described catheter block is coordinated and formed by conduit front stall and conduit back seat, and described counterflow-preventing film is arranged on the inside of conduit front stall and conduit back seat cooperation place.
7. reverse flow resistant indwelling needle according to claim 6, is characterized in that: described conduit front stall and conduit back seat are provided with corresponding snap close.
CN201320626869.8U 2013-10-11 2013-10-11 Countercurrent-resistant remaining needle Expired - Fee Related CN203525076U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320626869.8U CN203525076U (en) 2013-10-11 2013-10-11 Countercurrent-resistant remaining needle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320626869.8U CN203525076U (en) 2013-10-11 2013-10-11 Countercurrent-resistant remaining needle

Publications (1)

Publication Number Publication Date
CN203525076U true CN203525076U (en) 2014-04-09

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CN201320626869.8U Expired - Fee Related CN203525076U (en) 2013-10-11 2013-10-11 Countercurrent-resistant remaining needle

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CN (1) CN203525076U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109621082A (en) * 2019-01-31 2019-04-16 永岳医疗科技(昆山)有限公司 A kind of buttferfly-type reverse flow resistant indwelling needle
CN109771736A (en) * 2019-03-12 2019-05-21 河南曙光汇知康生物科技股份有限公司 A kind of Anti-reflux infusion port and its assemble method
CN110227202A (en) * 2019-07-12 2019-09-13 陈翠斌 A kind of micro-shaping injection needle
CN111050833A (en) * 2017-07-19 2020-04-21 贝克顿·迪金森公司 System and method for improving instrument guidance in an intravenous catheter assembly
CN113082351A (en) * 2021-03-02 2021-07-09 青岛大学附属医院 Transfusion system with blood return prevention indwelling needle
CN114748785A (en) * 2022-04-01 2022-07-15 山东新华安得医疗用品有限公司 Device for preventing catheter blood return

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111050833A (en) * 2017-07-19 2020-04-21 贝克顿·迪金森公司 System and method for improving instrument guidance in an intravenous catheter assembly
CN109621082A (en) * 2019-01-31 2019-04-16 永岳医疗科技(昆山)有限公司 A kind of buttferfly-type reverse flow resistant indwelling needle
CN109771736A (en) * 2019-03-12 2019-05-21 河南曙光汇知康生物科技股份有限公司 A kind of Anti-reflux infusion port and its assemble method
CN110227202A (en) * 2019-07-12 2019-09-13 陈翠斌 A kind of micro-shaping injection needle
CN113082351A (en) * 2021-03-02 2021-07-09 青岛大学附属医院 Transfusion system with blood return prevention indwelling needle
CN114748785A (en) * 2022-04-01 2022-07-15 山东新华安得医疗用品有限公司 Device for preventing catheter blood return

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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: 20140409

Termination date: 20141011

EXPY Termination of patent right or utility model