CN203355026U - Indwelling needle with self-retreating type puncture needle core - Google Patents
Indwelling needle with self-retreating type puncture needle core Download PDFInfo
- Publication number
- CN203355026U CN203355026U CN 201320362225 CN201320362225U CN203355026U CN 203355026 U CN203355026 U CN 203355026U CN 201320362225 CN201320362225 CN 201320362225 CN 201320362225 U CN201320362225 U CN 201320362225U CN 203355026 U CN203355026 U CN 203355026U
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- needle
- puncture
- closing member
- nook closing
- indwelling
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Abstract
The utility model relates to a medical instrument, and provides an indwelling needle with a self-retreating type puncture needle core in order to solve the technical problems caused by puncture of a currently used indwelling needle. The indwelling needle with the self-retreating type puncture needle core comprises a needle base, wherein an indwelling needle tube is connected to the front end of the needle base, a separation film is arranged in the needle base and fixed to the circumference of the inner wall of the needle base in a sealed mode, the rear end of the separation film is connected with a floating plug, a liquid cavity is formed between the separation film and the indwelling needle tube, the puncture needle core sequentially penetrates through the floating plug, the separation film and the indwelling needle tube from the rear end of the needle base, a needle head of the puncture needle core stretches out of the front end of the indwelling needle tube, a puncture needle core base embedded into the needle base is arranged at the rear end of the puncture needle core, and the puncture needle core base is connected with an operating handle; one end of a PVC hose is communicated with the liquid cavity, and the other end of the PVC hose is connected with an infusion three-way main tube. The venous indwelling needle greatly improves the success rate of puncture, relives labor intensity of medical workers and meanwhile avoids pains of patients caused by secondary puncture.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, specifically refers to a kind of puncture nook closing member self-retreating remaining needle.
Background technology
Venous detaining needle is easy and simple to handle, is applicable to the puncture at any position, has alleviated the misery of patient's repeated localised puncture simultaneously, has alleviated nursing staff's workload, is deeply protected clinically to suffer from and welcomes.The structure of the disposable vein remaining needle used at present as shown in Figure 1, it comprises needle stand 1, the needle stand front end connects keeps somewhere needle tubing 2, be provided with batching pig 3 in needle stand, form sap cavity 4 between batching pig and indwelling needle tubing, puncture nook closing member 5 is by the needle stand rear end through batching pig 3, indwelling needle tubing 2, and its syringe needle 6 stretches out indwelling needle tubing front end, rear end at the puncture nook closing member is provided with the puncture needle core print seat 7 chimeric with needle stand, and the puncture needle core print seat is connected with operating grip 8; One end of one PVC flexible pipe 9 and needle stand chamber connect, and the other end is connected with infusion tee 10 supervisors.During operation, infusion bottle is hung on drip stand, the scalp acupuncture of intravenous transfusion device is thrust in the calparine cap of transfusion arm of infusion tee 10, note draining air, close transfusion device switch.Select blood vessel, above point of puncture, arm-rest belt is pricked at the 10cm place, carry out routinely the local skin sterilization, tighten skin to be punctured with left hand, the right hand is 15～30 ° of angles with skin and punctures together with keeping somewhere needle tubing with thumb and forefinger clamp operation handle 8 nook closing member that will puncture, after seeing blood back, reduce angle and advance 0.2～0.5cm, then the fixing needle stand 1 of the right hand, left hand is extracted puncture nook closing member 0.5～1cm, the syringe needle of nook closing member of making to puncture is reduced to keeps somewhere needle tubing inside, left hand will be kept somewhere needle tubing and all send into vein, unclamp arm-rest belt, the nook closing member that will puncture is extracted out fully, with the fixing needle tubing of keeping somewhere of Special applicator.From the aforesaid operations process, take out so that the syringe needle of the nook closing member that punctures in the process that its needle retractable to keeping somewhere in needle tubing, prevents from continuing to advance damages blood vessel after needing both hands to coordinate the nook closing member that will puncture when the puncture nook closing member and after keeping somewhere needle tubing puncture blood back.Due to after take out the process of puncture nook closing member in the skin tightened be released, the vein blood vessel trend of skin below changes, when again the indwelling needle tubing being advanced, its progradation requires very accurate, otherwise can cause the indwelling needle tubing to advance unsuccessfully, bring the misery of secondary puncture to patient, also increased puncture personnel's labor intensity simultaneously.
Summary of the invention
Take out existing technical problem in operating process after the puncture nook closing member while puncturing for the venous detaining needle that solves current use, this utility model provides a kind of nook closing member self-retreating remaining needle.
For realizing above-mentioned technical purpose, the technical solution adopted in the utility model is: puncture nook closing member self-retreating remaining needle, comprise needle stand, the needle stand front end connects keeps somewhere needle tubing, it is characterized in that: in described needle stand, be provided with isolating membrane, isolating membrane and the sealing of needle stand inwall periphery are fixing, the isolating membrane rear end is connected with float-valve plug, form sap cavity between isolating membrane and indwelling needle tubing, the puncture nook closing member passes float-valve plug successively by the needle stand rear end, isolating membrane, keep somewhere needle tubing, its syringe needle stretches out keeps somewhere the needle tubing front end, rear end at the puncture nook closing member is provided with the puncture needle core print seat chimeric with needle stand, the puncture needle core print seat is connected with operating grip, one end of one PVC flexible pipe and sap cavity connect, and the other end is connected with the infusion tee supervisor.
Described indwelling needle tubing outside is provided with protection tube.
Described puncture nook closing member syringe needle stretches out keeps somewhere needle tubing 3-6mm.
Described needle stand rear end inner edge is provided with spacing back-up ring, and the internal diameter of spacing back-up ring is less than float-valve plug rear end diameter.
Described spacing back-up ring is 4-8mm apart from float-valve plug rear end distance.
Described PVC flexible pipe is provided with liquid stopping clamp.
There is a venous pressure due to blood when intravenous flows, be called for short venous pressure.This venous pressure can reach the 4-14 centimeter water column usually.The puncture nook closing member self-retreating venous detaining needle that this utility model provides utilizes this venous pressure that the isolating membrane in needle stand and float-valve plug are upwards promoted when puncture, utilize the motion of isolating membrane and float-valve plug to drive after the puncture needle core to take out so that its syringe needle is reduced to and keep somewhere needle tubing inside, while thoroughly solving the venous detaining needle puncture of using at present, need both hands to coordinate the technical problem of pumpback puncture nook closing member.This venous detaining needle is rational in infrastructure, while operating, one hand can be realized operation, has greatly improved puncture success rate, has alleviated medical personnel's labor intensity, the misery of also avoiding secondary puncture to bring to the patient simultaneously.
The accompanying drawing explanation
The structural representation of the remaining needle that accompanying drawing 1 is prior art.
Structural representation before the retained needle puncture that accompanying drawing 2 provides for this utility model.
Structural representation after the retained needle puncture that accompanying drawing 3 provides for this utility model.
In figure, 1, needle stand, 2, keep somewhere needle tubing, 3, batching pig, 4, sap cavity, 5, puncture nook closing member, 6, syringe needle, 7, the puncture needle core print seat, 8, operating grip, 9, the PVC flexible pipe, 10, infusion tee, 11, isolating membrane, 12, float-valve plug, 13, spacing back-up ring, 14, protection tube, 15, liquid stopping clamp.
The specific embodiment
Below in conjunction with drawings and Examples, this utility model is described further.
As shown in Figure 2, the puncture nook closing member self-retreating remaining needle that this utility model provides, comprise needle stand 1, needle stand 1 hollow cavity, and the tapered contraction of its front end, needle stand 1 front end connects keeps somewhere needle tubing 2.
As shown in Figure 2, be provided with an elastomeric isolation film 11 in the inner chamber of needle stand 1, isolating membrane 11 is fixing with the sealing of needle stand inwall periphery, and isolating membrane 11 rear ends are connected with float-valve plug 12, between isolating membrane and indwelling needle tubing, forms sap cavity 4.
As shown in Figure 2, puncture nook closing member 5 is by needle stand 1 rear end successively through float-valve plug 12, isolating membrane 11, indwelling needle tubing 2, and its syringe needle 6 stretches out keeps somewhere needle tubing 2 front ends, and its extension elongation is controlled at 3-6mm.Float-valve plug 12 adopts elastic rubber material to make, and after puncture nook closing member 5 is extracted out fully, sealed condition is formed on 11 pairs of sap cavities of float-valve plug 12 and isolating membrane, 4 tops.
As shown in Figure 2, the rear end of puncture nook closing member 5 is provided with the puncture needle core print seat 7 chimeric with needle stand 1, and puncture needle core print seat 7 is connected with operating grip 8.
As shown in Figure 2, an end of a PVC flexible pipe 9 and sap cavity 4 connect, and the other end is connected with infusion tee 10 supervisors.
As shown in Figure 2, for preventing keeping somewhere needle tubing 2 and syringe needle 6 pollutions, in indwelling needle tubing 2 outsides, be provided with protection tube 14.
During use, the scalp acupuncture of intravenous transfusion device is thrust in the calparine cap of transfusion arm of infusion tee 10, note draining air, the close transfusion device switch, now be full of liquid in sap cavity 4.Select blood vessel, above point of puncture, arm-rest belt is pricked at the 10cm place, carry out routinely the local skin sterilization, tighten skin to be punctured with left hand, the right hand is 15～30 ° angles punctures together with keeping somewhere needle tubing 2 with skin with thumb and forefinger clamp operation handle 8 nook closing member 5 that will puncture, after the vein blood back, the liquid generation that venous pressure promotes in sap cavity upwards pressure.As shown in Figure 3, isolating membrane 11 rising upwards now, float-valve plug 12 is taken out after driving puncture nook closing members 5, and as shown in Figure 3, syringe needle 6 bounces back to keeps somewhere needle tubing 2 inside.Continuation promotion needle stand 1 makes to keep somewhere needle tubing and all enters vein, unclamps arm-rest belt, and the nook closing member that will puncture is extracted out fully, with the fixing needle tubing of keeping somewhere of Special applicator.
When often need to annotate and add medicine through the arm of infusion tee 10 in infusion process, now sap cavity 4 internal pressures increase, for preventing that float-valve plug 12 from moving up apart from the excessive needle stand inner chamber that breaks away from, as shown in accompanying drawing 2 and accompanying drawing 3, be provided with spacing back-up ring 13 at needle stand 1 rear end inner edge, the internal diameter of spacing back-up ring 13 is less than float-valve plug 12 rear end diameters.
Known as shown in accompanying drawing 2, accompanying drawing 3, when spacing back-up ring 13 is set, distance between spacing back-up ring 13 and float-valve plug 12 ends is stretched out the extension elongation of indwelling needle tubing 2 front ends and is advisable to be slightly larger than syringe needle 6, in the present embodiment, the extension elongation of syringe needle is at 3-6mm, and correspondingly the distance between spacing back-up ring 13 and float-valve plug 12 ends is controlled at 4-8mm.
As shown in accompanying drawing 2, accompanying drawing 3, be provided with the liquid stopping clamp 15 for controlling liquid flow on the PVC flexible pipe.
Claims (6)
1. nook closing member self-retreating remaining needle punctures, comprise needle stand, the needle stand front end connects keeps somewhere needle tubing, it is characterized in that: in described needle stand, be provided with isolating membrane, isolating membrane and the sealing of needle stand inwall periphery are fixing, the isolating membrane rear end is connected with float-valve plug, form sap cavity between isolating membrane and indwelling needle tubing, the puncture nook closing member passes float-valve plug, isolating membrane, indwelling needle tubing successively by the needle stand rear end, its syringe needle stretches out keeps somewhere the needle tubing front end, rear end at the puncture nook closing member is provided with the puncture needle core print seat chimeric with needle stand, and the puncture needle core print seat is connected with operating grip; One end of one PVC flexible pipe and sap cavity connect, and the other end is connected with the infusion tee supervisor.
2. puncture nook closing member self-retreating remaining needle according to claim 1, it is characterized in that: described indwelling needle tubing outside is provided with protection tube.
3. puncture nook closing member self-retreating remaining needle according to claim 1 is characterized in that: described puncture nook closing member syringe needle stretches out keeps somewhere needle tubing 3-6mm.
4. puncture nook closing member self-retreating remaining needle according to claim 1, it is characterized in that: described needle stand rear end inner edge is provided with spacing back-up ring, and the internal diameter of spacing back-up ring is less than float-valve plug rear end diameter.
5. puncture nook closing member self-retreating remaining needle according to claim 4 is characterized in that: described spacing back-up ring is 4-8mm apart from float-valve plug rear end distance.
6. puncture nook closing member self-retreating remaining needle according to claim 1, it is characterized in that: described PVC flexible pipe is provided with liquid stopping clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320362225 CN203355026U (en) | 2013-06-24 | 2013-06-24 | Indwelling needle with self-retreating type puncture needle core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320362225 CN203355026U (en) | 2013-06-24 | 2013-06-24 | Indwelling needle with self-retreating type puncture needle core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203355026U true CN203355026U (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320362225 Expired - Fee Related CN203355026U (en) | 2013-06-24 | 2013-06-24 | Indwelling needle with self-retreating type puncture needle core |
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| CN (1) | CN203355026U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105498031A (en) * | 2016-02-19 | 2016-04-20 | 常熟市精亮微医疗器械科技有限公司 | Infusion needle |
| CN106063957A (en) * | 2015-04-24 | 2016-11-02 | 北京万生人和科技有限公司 | A kind of venipuncture needle |
| CN107789040A (en) * | 2016-08-31 | 2018-03-13 | 江苏阳普医疗科技有限公司 | A kind of safety-type medical trocar with position limiting structure |
| WO2019201093A1 (en) * | 2018-04-16 | 2019-10-24 | 北京仰生恒泰科技有限责任公司 | Safe venous indwelling needle |
| CN110582318A (en) * | 2017-05-15 | 2019-12-17 | 福建省百仕韦医用高分子股份有限公司 | Needle puncture subassembly is kept somewhere to spacing formula safety type of stay cord |
-
2013
- 2013-06-24 CN CN 201320362225 patent/CN203355026U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106063957A (en) * | 2015-04-24 | 2016-11-02 | 北京万生人和科技有限公司 | A kind of venipuncture needle |
| CN105498031A (en) * | 2016-02-19 | 2016-04-20 | 常熟市精亮微医疗器械科技有限公司 | Infusion needle |
| CN105498031B (en) * | 2016-02-19 | 2020-03-17 | 常熟市精亮微医疗器械科技有限公司 | Transfusion needle |
| CN107789040A (en) * | 2016-08-31 | 2018-03-13 | 江苏阳普医疗科技有限公司 | A kind of safety-type medical trocar with position limiting structure |
| CN107789040B (en) * | 2016-08-31 | 2024-01-16 | 上海长征医院 | Safe medical trocar with limit structure |
| CN110582318A (en) * | 2017-05-15 | 2019-12-17 | 福建省百仕韦医用高分子股份有限公司 | Needle puncture subassembly is kept somewhere to spacing formula safety type of stay cord |
| WO2019201093A1 (en) * | 2018-04-16 | 2019-10-24 | 北京仰生恒泰科技有限责任公司 | Safe venous indwelling needle |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20160624 |