CN203291313U - Safe intravenous infusion remaining needle component - Google Patents
Safe intravenous infusion remaining needle component Download PDFInfo
- Publication number
- CN203291313U CN203291313U CN2013203533992U CN201320353399U CN203291313U CN 203291313 U CN203291313 U CN 203291313U CN 2013203533992 U CN2013203533992 U CN 2013203533992U CN 201320353399 U CN201320353399 U CN 201320353399U CN 203291313 U CN203291313 U CN 203291313U
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- China
- Prior art keywords
- needle
- protective sleeve
- assembly
- piercing
- intravenous infusion
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- 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 - Lifetime
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Abstract
The utility model relates to a medical needle, in particular to a safe intravenous infusion remaining needle component. By arranging an elastic resetting mechanism, a shackling mechanism and a pressing-type unshackling mechanism, after a puncture action is finished, a user only needs to press the pressing-type unshackling mechanism with one hand to unshackle the shackling mechanism, the elastic resetting mechanism can push a puncture component into an inner cavity to hide a needle tube seat and a puncture needle head in the inner cavity, so that cross infection caused by the fact that the user is punctured by the needle head can be prevented, and the safe intravenous infusion remaining needle component is quite convenient to operate.
Description
Technical field
This utility model relates to a kind of intravenous infusion indwelling needle assembly, specifically a kind of safe intravenous infusion indwelling needle assembly.
Background technology
Remaining needle is the transfusion instrument that substitutes traditional disposable infusion needle, with the misery that reduces patient's repeated puncture with alleviate medical worker's nursing work load, now extensive use clinically.Its structure generally comprises piercing assembly, plug, catheter block and the inlying catheter that is comprised of needle tubing seat and piercing needle.Wherein, inlying catheter is arranged on the catheter block front end, and the catheter block side is provided with puncture needle wings, inlying catheter axially connect form the syringe needle activity the syringe needle passage, plug is fixedly installed in catheter block, and the piercing needle in piercing assembly passes plug and inserts in inlying catheter.During use, by piercing needle, guide inlying catheter to thrust vein, extract subsequently piercing assembly, the arteriovenous infusion medicinal liquid that after this utilizes inlying catheter to continue to the patient.Because piercing assembly is disposable; for fear of needle sting people in carrying out garbage disposal or recycling process; cause the secondary cross infection, on existing intravenous infusion indwelling needle, all can enclose safety protective cover composition safe intravenous infusion indwelling needle assembly used remaining needle is protected.existing safety protective cover is generally a kind of circular tube shaped member, length is longer than piercing assembly, endoporus and needle tubing seat matched in clearance, the inner chamber of safety protective cover forms the piercing assembly container cavity, the tube wall of safety protective cover one end is provided with wedge-formed incision, near the relative other end of safety protective cover, be provided with by near square, the locked groove that forms with the window of backing stop structure, between locked groove and wedge-formed incision, being provided with the guide channel that axial joint-cutting forms is connected, an end and threeway catheter block that safeguard protection is arranged with wedge-formed incision removably connect, puncture needle wings on the needle tubing seat is passed guide channel and is exposed at outside the safeguard protection casing wall, when completing puncture, hands is pinched puncture needle wings and along guide channel post-tensioning to locked groove, puncture needle wings is blocked, make needle tubing seat and piercing needle all hide to the inner chamber of safety protective cover be in the piercing assembly container cavity, thereby prevent the needle sting people.Existing safety protective cover is because structure is limit, still there is following defect: 1, when completing puncture, to arrest on the other hand safety protective cover, the another hands pinches puncture needle wings and along guide channel post-tensioning to locked groove, puncture needle wings is blocked, make needle tubing seat and piercing needle all hide to the inner chamber of safety protective cover be in the piercing assembly container cavity, therefore need two hand operateds, more loaded down with trivial details, operation inconvenience; 2, due to the existence of wedge-formed incision and guide channel, piercing needle is still likely from exposing the gap of guide channel.
Summary of the invention
The purpose of this utility model is to provide in order to overcome the deficiencies in the prior art the safe intravenous infusion indwelling needle assembly that exposes in a kind of easy to operate gap.
to achieve these goals, the technical solution adopted in the utility model is: a kind of safe intravenous infusion indwelling needle assembly, comprise needle tube sheath, indwelling needle assembly, tubulose safety protective cover body and piercing assembly, described piercing assembly comprises needle tubing seat and piercing needle, indwelling needle assembly comprises catheter block and inlying catheter, inlying catheter is arranged on the catheter block front end, the catheter block side is provided with puncture needle wings, the protective sleeve body length is longer than piercing assembly, described needle tube sheath and catheter block removably connect, it is characterized in that: described piercing assembly can be arranged in the protective sleeve chamber body axially slidably, described piercing assembly has the dormant state that is in the inner chamber front end and is in the rear state of using of inner chamber the inner in the protective sleeve chamber body, described safe intravenous infusion indwelling needle assembly also is provided with flexible restoring organ or latching device and pressing type tripping mechanism, described flexible restoring organ makes described piercing assembly under dormant state, have the elastic force of piercing assembly being pushed to inner chamber the inner, described latching device is locked in dormant state by described piercing assembly, described pressing type tripping mechanism is for the described latching device of release.
Compared with prior art, this utility model is owing to being provided with flexible restoring organ and latching device and pressing type tripping mechanism, after completing the puncture action, only need one hand to press the pressing type tripping mechanism by described latching device release, flexible restoring organ will be pushed piercing assembly in inner chamber, needle tubing seat and piercing needle all are hidden in wherein, thereby prevent the artificial one-tenth cross infection of needle sting, operation is very easy.
Below in conjunction with the accompanying drawings and the specific embodiments this utility model is further described.
The accompanying drawing explanation
Accompanying drawing 1 is this utility model specific embodiment structural representation;
Accompanying drawing 2 is opened the structural representation after needle tube sheath for this utility model specific embodiment;
Accompanying drawing 3 is this utility model specific embodiment decomposition texture schematic diagram;
Accompanying drawing 4 is this utility model specific embodiment dormant state internal structure cutaway view;
Accompanying drawing 5 for this utility model specific embodiment with rear state internal structure cutaway view.
The specific embodiment
As Figure 1-3; the safe intravenous infusion indwelling needle assembly comprises needle tube sheath 1, indwelling needle assembly 3, tubulose safety protective cover body 2 and piercing assembly 4; described piercing assembly 4 comprises needle tubing seat 402 and piercing needle 401; piercing needle 401 is fixed on needle tubing seat 402 front ends; indwelling needle assembly 3 comprises catheter block 302 and inlying catheter 301; inlying catheter 301 is fixedly installed on catheter block 302 front ends, and catheter block 302 sides are provided with puncture needle wings 303, can be one or both sides.In this specific embodiment, protective sleeve body 2 is circular tube shaped, and length is longer than piercing assembly 4, to guarantee that piercing assembly 4 is hidden in to inside fully.described needle tube sheath 1 and catheter block 302 clampings, described needle tube sheath 1 removably connects with catheter block 302, needle tubing seat 402 can be truncated cone cylindrical or that front end is smaller, the diameter of needle tubing seat 402 coordinates with safety protective cover body 2 inner bore diameter clearance, described piercing assembly 4 can be arranged in protective sleeve body 2 inner chambers axially slidably, described piercing assembly 4 has the dormant state that is in the inner chamber front end and is in the rear state of using of inner chamber the inner in protective sleeve body 2 inner chambers, safe intravenous infusion indwelling needle assembly 3 also is provided with flexible restoring organ or latching device and pressing type tripping mechanism, in this specific embodiment, on described needle tubing seat 402, be arranged with Compress Spring 5, described needle tubing seat 402 rear end surfaces are provided with the shoulder rank, described Compress Spring 5 rear ends are against on described shoulder rank, Compress Spring 5 front ends are against on the inwall of protective sleeve body front end and make described piercing assembly 4 under dormant state, have the elastic force of piercing assembly 4 being pushed to inner chamber the inner, form thus described flexible restoring organ, as shown in Figure 4, certainly, an extension spring can also be set in the inner of protective sleeve chamber body, one end of extension spring is connected on described needle tubing seat 402, and the inner that the other end is connected to the protective sleeve chamber body forms described flexible restoring organ, but this structure can cause the protective sleeve body length to lengthen.described protective sleeve body 2 is provided with guide chute 201 vertically, described needle tubing seat 402 outer walls are provided with radial projection 4021, described projection 4021 matched in clearance in guide chute 201 and end be exposed at outside protective sleeve body 2, on described protective sleeve body 2 outer walls, be provided with vertically seesaw spare, preferably near front end, corresponding with the position of needle tubing seat 402 under dormant state, described seesaw spare 6 is provided with described projection 4021 corresponding sections, position the hook 601 that matches with projection 4021 on an end of protective sleeve body 2 rear ends, hook 601 is towards protective sleeve body 2 tube walls, described hook 601 catches on projection 4021 and stops piercing assembly 4 to slide to the described latching device of the inner formation of protective sleeve body 2 inner chambers, described seesaw spare 6 other ends are release end 602, between release end 602 and protective sleeve body 2 tube walls, need to leave the gap of pressing, thereby form described pressing type tripping mechanism, when pressing release end 602, the other end upwarps, hook 601 breaks away from projection 4021, piercing assembly 4 can slide to the inner of protective sleeve body 2 inner chambers and be protected, as shown in Figure 5.Safety intravenous infusion indwelling needle assembly is not only easy to use; and due to piercing assembly 4 behind the inner that slides to the protective sleeve chamber body; piercing needle 401 also is in Compress Spring 5 simultaneously, and is absolutely not from the guide chute 201 on protective sleeve body 2, exposing, so safety is higher.In order to prevent owing to touching release end 602 by mistake, cause original piercing assembly 4 to slide to the interior intracavity of protective sleeve body 2; described release end 602 is near needle tube sheath 1, and described needle tube sheath 1 is provided with the block 101 of pressing below that extends to release end 602 towards release end 602 1 sides.Certainly; latching device neither be unique; also other modes can also be arranged; as: as described in be provided with the radial spring cavity volume on needle tubing seat 402; in described radial spring cavity volume, be provided with successively helical spring and column unlock button, under dormant state, position corresponding with the radial spring cavity volume on protective sleeve body outer wall is provided with button hole; described unlock button end is from button hole, passing and expose, and described unlock button exposed parts is that inclined-plane arranges the described latching device of formation towards protective sleeve body tip one side.After completing the puncture action; only need singlehanded capable of being unlocked by pressing button; unlock button is pressed towards the radial spring cavity volume; while in being depressed into chamfered portion and button hole, contacting; due to the elastic force of Compress Spring 5 and the effect on inclined-plane on described needle tubing seat 402; thereby unlock button can further be moved back to release in spring cavity volume radially, and piercing assembly 4 can slide to the inner of protective sleeve chamber body and be protected.
Claims (3)
1. safe intravenous infusion indwelling needle assembly, comprise needle tube sheath, indwelling needle assembly, tubulose safety protective cover body and piercing assembly, described piercing assembly comprises needle tubing seat and piercing needle, indwelling needle assembly comprises catheter block and inlying catheter, inlying catheter is arranged on the catheter block front end, the catheter block side is provided with puncture needle wings, the protective sleeve body length is longer than piercing assembly, described needle tube sheath and catheter block removably connect, it is characterized in that: described piercing assembly can be arranged in the protective sleeve chamber body axially slidably, described piercing assembly has the dormant state that is in the inner chamber front end and is in the rear state of using of inner chamber the inner in the protective sleeve chamber body, described safe intravenous infusion indwelling needle assembly also is provided with flexible restoring organ or latching device and pressing type tripping mechanism, described flexible restoring organ makes described piercing assembly under dormant state, have the elastic force of piercing assembly being pushed to inner chamber the inner, described latching device is locked in dormant state by described piercing assembly, described pressing type tripping mechanism is for the described latching device of release.
2. safe intravenous infusion indwelling needle assembly according to claim 1, it is characterized in that: on described needle tubing seat, be arranged with Compress Spring, described needle tubing base rear end surface is provided with the shoulder rank, described Compress Spring rear end is against on described shoulder rank, and the Compress Spring front end is against on the inwall of protective sleeve body front end and forms described flexible restoring organ; Described protective sleeve body is provided with guide chute vertically; described needle tubing seat outer wall is provided with projection; described projection matched in clearance is in guide chute and be exposed at protective sleeve this is external in end; on described protective sleeve body outer wall, be provided with vertically seesaw spare; under dormant state; described seesaw spare is provided with described bump position corresponding section the hook that matches with projection and forms described latching device on an end of protective sleeve body rear end, the described seesaw spare other end is that the release end forms described pressing type tripping mechanism.
3. safe intravenous infusion indwelling needle assembly according to claim 1, it is characterized in that: described needle tube sheath and catheter block clamping, described release end is near needle tube sheath, and described needle tube sheath is provided with the block of pressing below that extends to the release end towards release end one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203533992U CN203291313U (en) | 2013-06-18 | 2013-06-18 | Safe intravenous infusion remaining needle component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203533992U CN203291313U (en) | 2013-06-18 | 2013-06-18 | Safe intravenous infusion remaining needle component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203291313U true CN203291313U (en) | 2013-11-20 |
Family
ID=49567362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203533992U Expired - Lifetime CN203291313U (en) | 2013-06-18 | 2013-06-18 | Safe intravenous infusion remaining needle component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203291313U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301528A (en) * | 2013-06-18 | 2013-09-18 | 浙江康德莱医疗器械股份有限公司 | Safe intravenous infusion indwelling needle component |
| WO2015117534A1 (en) * | 2014-02-06 | 2015-08-13 | 闫雪松 | Intravenous infusion injection needle |
-
2013
- 2013-06-18 CN CN2013203533992U patent/CN203291313U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301528A (en) * | 2013-06-18 | 2013-09-18 | 浙江康德莱医疗器械股份有限公司 | Safe intravenous infusion indwelling needle component |
| WO2014201709A1 (en) * | 2013-06-18 | 2014-12-24 | 浙江康德莱医疗器械股份有限公司 | Safe, intravenous infusion indwelling needle component |
| WO2015117534A1 (en) * | 2014-02-06 | 2015-08-13 | 闫雪松 | Intravenous infusion injection needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131120 |
|
| CX01 | Expiry of patent term |