CN1220894A - Disposable external-cover-type retaining needle - Google Patents
Disposable external-cover-type retaining needle Download PDFInfo
- Publication number
- CN1220894A CN1220894A CN 97108369 CN97108369A CN1220894A CN 1220894 A CN1220894 A CN 1220894A CN 97108369 CN97108369 CN 97108369 CN 97108369 A CN97108369 A CN 97108369A CN 1220894 A CN1220894 A CN 1220894A
- Authority
- CN
- China
- Prior art keywords
- cushion chamber
- needle
- shank
- injection
- plastic catheter
- 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.)
- Pending
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
A syringe needle for perfusion has an enclosed needle and with hole on its side wall. A handle is installed to tail of the needle rod. A retained plastic catheter sleeves the needle rod and has a buffer cavity connected to its tail. A rubber plug is inserted in the tail of said plastic catheter. The perfusion tube and fixing handle are connected with the side wall of buffer cavity. The side hole of the needle rod is positioned in the buffer cavity. Its advantages include convenient application and high safety and reliability.
Description
The present invention relates to a kind of transfusion injection needle head, particularly a kind of disposable external-cover-type retaining needle.
Be very common thing to suffering from patient's transfusion at present, but the used injection needle of infusing is a steel, and it can not be out of shape, and is difficult to fix, even fixedly behind the injection needle, as long as shank slightly moves, its needle point just may puncture or withdraw from blood vessel, and treatment liquid can no longer flow in the blood vessel, but be injected into interstice, cause the tissue local edema, and need puncture again, bring misery to the patient.
The object of the present invention is to provide a kind of safe and reliable disposable external-cover-type retaining needle.
The present invention finishes with following mode: disposable external-cover-type retaining needle is that the end of keeping somewhere plastic catheter 2 is connected with cushion chamber 3, be connected with tube for transfusion 4 and fixed handle 8 on the sidewall of cushion chamber 3, the tail end of cushion chamber 3 is plugged with rubber stopper 5, on the tail end of the injection shank 1 of tail end sealing handle 7 is housed, on the sidewall of injection shank 1, have hole 6, injection shank 1 interts in keeping somewhere plastic catheter 2 after passing rubber stopper 5 and cushion chamber 3, the needle point of injection shank 1 front end stretches out keeps somewhere plastic catheter 2, and the hole 6 on injection shank 1 sidewall is in the cushion chamber 3.
Disposable external-cover-type retaining needle of the present invention adopts soft indwelling plastic catheter to be enclosed within on the shank, after injecting blood vessel, the draw point bar is extracted out, keep somewhere plastic catheter and be retained in continuation transfusion in the blood vessel, because of inlying catheter is a plastic tube, can be out of shape, can enter long enough along blood vessel, can be because of slight moving do not puncture or withdraw from blood vessel and cause the tissue local enlargement, the inlying catheter front end is in blood vessel, the rear end is connected with cushion chamber, cushion chamber connects tube for transfusion, and cushion chamber and fixed handle can be close to limbs and fix, and it has easy to use, safe and reliable, be applicable to the injection use.
Fig. 1 is a structural representation of the present invention
The present invention is further detailed explanation below in conjunction with accompanying drawing:
As shown in Figure 1, disposable external-cover-type of the present invention is kept somewhere by steel injection shank 1 and is kept somewhere plastic catheter 2 and form.The front end of steel injection shank 1 has needle point, be hollow in it, rearward end at injection shank 1 is one section sealing, handle 7 is housed on this segment trailer, keeping somewhere plastic catheter 2 is plastic hollow pipes, its end connects cushion chamber 3, has the end to be plugged with rubber stopper 5 at cushion chamber 3, is connected with transfusion catheter 4 and fixed handle 8 is housed on the sidewall of cushion chamber 3.Injection shank 1 penetrates to keeping somewhere in the plastic catheter 2 after passing rubber stopper 5 and cushion chamber 3, keeping somewhere plastic catheter 2 tightly is enclosed within on the injection shank 1, the needle point of shank 1 front end stretches out keeps somewhere plastic catheter 2, has hole 6 on the sidewall of injection shank 1, is communicated with the infusion channel in the injection shank 1.Identical during use with conventional puncture, this remaining needle is thrust blood vessel, after seeing that blood flows into cushion chamber 3 in side opening 6, confirm syringe needle intravasation, pull handle 7, needle point is return 3-5mm in the indwelling plastic catheter 2, hand-held again fixed handle 8 will be kept somewhere plastic catheter 2 and continue the about 3-10mm of intravasation along blood vessel, holding handle 7 will inject shank 1 and all detach and keep somewhere plastic catheter 2 and rubber stopper 5, this moment, rubber stopper 5 was closed naturally because of elastic reaction, can be in the cushion chamber 3 because of not withdrawing from injection shank 1 discharge, reuse immobilization with adhesive tape cushion chamber 3 and fixed handle 8.
Claims (1)
1. disposable external-cover-type retaining needle, it is characterized in that the end of keeping somewhere plastic catheter [2] is connected with cushion chamber [3], be connected with tube for transfusion [4] and fixed handle [8] on the sidewall of cushion chamber [3], the tail end of cushion chamber [3] is plugged with rubber stopper [5], on the tail end of the injection shank [1] of tail end sealing handle [7] is housed, on the sidewall of injection shank [1], have hole [6], injection shank [1] interts in keeping somewhere plastic catheter [2] after passing rubber stopper [5] and cushion chamber [3], the needle point of injection shank [1] front end stretches out keeps somewhere plastic catheter [2], and the hole [6] on injection shank [1] sidewall is in the cushion chamber [3].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97108369 CN1220894A (en) | 1997-12-23 | 1997-12-23 | Disposable external-cover-type retaining needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97108369 CN1220894A (en) | 1997-12-23 | 1997-12-23 | Disposable external-cover-type retaining needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1220894A true CN1220894A (en) | 1999-06-30 |
Family
ID=5170372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97108369 Pending CN1220894A (en) | 1997-12-23 | 1997-12-23 | Disposable external-cover-type retaining needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1220894A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103446656A (en) * | 2012-06-01 | 2013-12-18 | 上海市同济医院 | Anti-breaking nerve block indwelling catheter needle |
| CN106552303A (en) * | 2016-11-24 | 2017-04-05 | 李德生 | Macromolecule is external to stay soft round end |
-
1997
- 1997-12-23 CN CN 97108369 patent/CN1220894A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103446656A (en) * | 2012-06-01 | 2013-12-18 | 上海市同济医院 | Anti-breaking nerve block indwelling catheter needle |
| CN106552303A (en) * | 2016-11-24 | 2017-04-05 | 李德生 | Macromolecule is external to stay soft round end |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |