CN202554635U - Venous indwelling needle - Google Patents
Venous indwelling needle Download PDFInfo
- Publication number
- CN202554635U CN202554635U CN2012202099535U CN201220209953U CN202554635U CN 202554635 U CN202554635 U CN 202554635U CN 2012202099535 U CN2012202099535 U CN 2012202099535U CN 201220209953 U CN201220209953 U CN 201220209953U CN 202554635 U CN202554635 U CN 202554635U
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- China
- Prior art keywords
- needle
- shank
- puncture
- transfusion
- puncture needle
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- Expired - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A venous indwelling needle belongs to medical apparatus, and overcomes the defects that human tissues can be cut off by puncture needles of existing venous indwelling needles to cause blockage of blood return holes, and needle stems are low in strength. The venous indwelling needle comprises a puncture needle and an infusion needle sleeved on a needle stem of the puncture needle. The venous indwelling needle is characterized in that a blood return hole, which is composed of a borehole and a lateral through hole, on the needle rod is omitted, the puncture needle is totally solid, a section of axial sliced plane or axial groove is arranged at a closed port at the front end of the infusion needle, and a blood return through hole is reserved between the closed port of the infusion needle and the axial sliced plane or the axial groove. The venous indwelling needle has the advantages that no edge is formed on an inclined face of a needle tip, human tissues cannot by cut off during puncture, blockage of the puncture needle causing no blood return or slow blood return can be avoided, and mistakes can be eliminated. Small part is excavated from the section of the puncture needle rod to reserve the blood return through hole, so that strength of the needle stem is enhanced, the needle stem is bending-resistant and fracture-resistant, and safety of the needle stem in use is improved.
Description
Technical field
The invention belongs to medical apparatus and instruments, be specifically related to the injection syringe needle.
Background technology
By puncture needle be enclosed within the venous detaining needle that the software plastic material transfusion needle on the puncture needle is formed, when infusing for the first time, bring the shank of transfusion needle into vein, behind the blood back by puncture needle; Extract puncture needle out; Medicinal liquid injects blood vessel through the transfusion pin hole, and completion is stayed original position with transfusion needle after once infusing; Reuse when infusing, transfusion needle can be kept somewhere in human body nearly hundred hours next time.Based on advantage in the venous detaining needle medical treatment and technical factor, the more developed country is widely used abroad.Its domestic application is also increasing gradually in recent years.In venous transfusion, use the disposable vein remaining needle, reduced the venipuncture number of times, prolong the venipuncture interval.And easy and simple to handle, success rate is high, side effect is little, alleviates the patient suffering, guarantee in time, safe medication.Reduced medical personnel's workload and prevented that effectively medical personnel from avoiding injecting blood contamination in addition.But the front end of the puncture needle in the existing remaining needle has from the lateral blood back of pinpoint inclined plane to pin front end hole, makes that the pinpoint inclined plane part is identical with existing normal injection needle head structure, and needle point first inclined-plane crosses into cutting edge with second inclined-plane with the blood back hole; Can be as injection needle in the past; In carrying out the human body piercing process, cutting to some extent human body skin and flesh tissue down gets into needle tubing, makes puncture needle pipe plug plug; Cause not blood back or blood back slow, cause medical personnel's misjudge.Simultaneously; On puncture needle, open axle center hole and axle center hole and lead to lateral side through hole as the blood back hole; More at axle center hole and side through hole block position by cut-out, reduced the shank intensity here to a great extent, there is operation unexpected slightly; It is unavoidable that bending takes place, and the potential danger that injures the patient is arranged.
Summary of the invention
The purpose of this invention is to provide a kind of venous detaining needle, be used for the patient infusion treatment, the puncture needle that overcomes the venous detaining needle existence of existing structure can cut away tissue, the deficiency that shank front end intensity is low.
Venous detaining needle of the present invention comprises puncture needle and is enclosed within the transfusion needle on the puncture needle shank; Puncture needle wherein by the needle bar frame of shank, shank rear end, be connected the operation holding plate on the needle bar frame, the beveled point of shank front end constitutes; Transfusion needle wherein is made up of the blood back pipe at the needle tubing seat that is enclosed within needle tubing on the puncture needle shank, syringe rear end, the needle tubing rear portion tube for transfusion joint of holding concurrently; Transfusion needle needle tubing internal diameter is slightly larger than puncture needle shank external diameter; The front end of transfusion needle needle tubing closes up on the periphery of puncture needle shank; The improvement of being done is, the blood back hole of forming by axle center hole and side through hole on the cancellation puncture needle shank, and it all is solid making puncture needle; One section axial side grain or axial groove are arranged on the shank of transfusion needle needle tubing front end closing in place, between axial side grain on closing in of transfusion needle needle tubing and the puncture needle shank or groove, form the blood back through hole.
Good effect of the present invention is: because the puncture needle free of pinholes; On pinpoint inclined plane, can not form cutting edge, not exist and carry out cutting the phenomenon of human body skin and flesh tissue down in the human body piercing process, having avoided in the past, the needle tubing of puncture needle stops up; Cause not blood back or blood back slow, eliminated error.To excavate part few in order to reserve the blood back passage in puncture shank cross section, and shank intensity increases, and bending resistance, anti-folding have promoted the safety of using.
Description of drawings
Fig. 1 has the remaining needle master of axial side grain to look intention on the puncture needle shank of the present invention.
Fig. 2 has the remaining needle of axial side grain to overlook intention on the puncture needle shank of the present invention.
Fig. 3 is for there being the remaining needle side grain A-A of the place cutaway view of axial side grain on the puncture needle shank of the present invention.
Fig. 4 is for there being the remaining needle front view of axial groove on the puncture needle shank of the present invention.
Fig. 5 is for there being the remaining needle side grain B-B of the place cutaway view of axial groove on the puncture needle shank of the present invention.
The specific embodiment
Consult Fig. 1, Fig. 2, Fig. 3; Venous detaining needle of the present invention comprises puncture needle and is enclosed within the transfusion needle on the puncture needle shank; Puncture needle wherein by the needle bar frame 2 of shank 1, shank rear end, be connected the operation holding plate 3 on the needle bar frame, the beveled point 4 of shank front end constitutes; Transfusion needle wherein is made up of the blood back pipe at the needle tubing seat 6 that is enclosed within needle tubing 5 on the puncture needle shank, syringe rear end, the needle tubing rear portion tube for transfusion joint 7 of holding concurrently; Transfusion needle needle tubing internal diameter is slightly larger than puncture needle shank external diameter, and the front end of transfusion needle needle tubing closes up on the periphery of puncture needle shank, and the puncture needle shank all is solid; One section axial side grain 8 is arranged on the shank of transfusion needle needle tubing front end closing in place, between closing in of transfusion needle needle tubing and puncture needle shank side grain, form blood back through hole 9.
Consult Fig. 4, Fig. 5; Venous detaining needle of the present invention comprises puncture needle and is enclosed within the transfusion needle on the puncture needle shank; Puncture needle wherein by the needle bar frame 2 of shank 1, shank rear end, be connected the operation holding plate 3 on the needle bar frame, the beveled point 4 of shank front end constitutes; Transfusion needle wherein is made up of the blood back pipe at the needle tubing seat 6 that is enclosed within needle tubing 5 on the puncture needle shank, syringe rear end, the needle tubing rear portion tube for transfusion joint 7 of holding concurrently; Transfusion needle needle tubing internal diameter is slightly larger than puncture needle shank external diameter, and the front end of transfusion needle needle tubing closes up on the periphery of puncture needle shank, and the puncture needle shank is solid; One section axial groove 10 is arranged on the shank of transfusion needle needle tubing front end closing in place, and transfusion needle needle tubing corresponding axial groove 10 parts and the axial groove 10 that close up forms blood back through holes 11.
Claims (1)
1. venous detaining needle; Comprise puncture needle and be enclosed within the transfusion needle on the puncture needle shank; Puncture needle wherein by the needle bar frame of shank, shank rear end, be connected the operation holding plate on the needle bar frame, the beveled point of shank front end constitutes; Transfusion needle wherein is made up of the blood back pipe at the needle tubing seat that is enclosed within needle tubing on the puncture needle shank, syringe rear end, the needle tubing rear portion tube for transfusion joint of holding concurrently; Transfusion needle needle tubing internal diameter is slightly larger than puncture needle shank external diameter, and the front end of transfusion needle needle tubing closes up on the periphery of puncture needle shank, it is characterized in that; The blood back hole of forming by axle center hole and side through hole on the cancellation puncture needle shank; It all is solid making puncture needle, and one section axial side grain or axial groove are arranged on the shank of transfusion needle needle tubing front end closing in place, between axial side grain on closing in of transfusion needle needle tubing and the puncture needle shank or groove, forms the blood back through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202099535U CN202554635U (en) | 2012-05-11 | 2012-05-11 | Venous indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202099535U CN202554635U (en) | 2012-05-11 | 2012-05-11 | Venous indwelling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202554635U true CN202554635U (en) | 2012-11-28 |
Family
ID=47204345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202099535U Expired - Fee Related CN202554635U (en) | 2012-05-11 | 2012-05-11 | Venous indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202554635U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102716526A (en) * | 2012-05-11 | 2012-10-10 | 刘佐 | Venous indwelling needle |
| CN107569258A (en) * | 2017-09-29 | 2018-01-12 | 上海长海医院 | A kind of puncture needle |
-
2012
- 2012-05-11 CN CN2012202099535U patent/CN202554635U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102716526A (en) * | 2012-05-11 | 2012-10-10 | 刘佐 | Venous indwelling needle |
| CN102716526B (en) * | 2012-05-11 | 2013-09-18 | 刘佐 | Venous indwelling needle |
| CN107569258A (en) * | 2017-09-29 | 2018-01-12 | 上海长海医院 | A kind of puncture 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 |
Granted publication date: 20121128 Termination date: 20150511 |
|
| EXPY | Termination of patent right or utility model |