CN202666101U - Safety indwelling needle - Google Patents
Safety indwelling needle Download PDFInfo
- Publication number
- CN202666101U CN202666101U CN 201220311495 CN201220311495U CN202666101U CN 202666101 U CN202666101 U CN 202666101U CN 201220311495 CN201220311495 CN 201220311495 CN 201220311495 U CN201220311495 U CN 201220311495U CN 202666101 U CN202666101 U CN 202666101U
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- CN
- China
- Prior art keywords
- push rod
- female luer
- locking type
- type female
- indwelling needle
- 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
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a safety indwelling needle which is provided with a cylinder (1), a push rod (2), a locking Luer joint (3) and an indwelling needle assembly (4). Positioned at a front end assembling part between the locking Luer joint (3) and the cylinder (1), a circular boss groove match pair (5) for preventing the push rod (2) from falling back during use is arranged between the locking Luer joint (3) and the cylinder (1). Positioned at a rear end assembling part is arranged between the locking Luer joint (3) and the cylinder (1), a first circular bump (3-1) and a second circular bump (1-1) for preventing the tube (puncture needle) of the indwelling needle from hurting people caused by secondary percussion are respectively arranged between the locking Luer joint (3) and the cylinder (1). The safety indwelling needle is mainly characterized in that the first circular bump (3-1) and the second circular bump (1-1) are arranged. The safety indwelling needle has the characteristics of reasonable structure, convenience in assembly and safety in use, and the puncture needle does not hurt people and the like.
Description
Technical field
This utility model relates to a kind of safety indwelling needle, belongs to technical field of medical instruments.
Background technology
Related remaining needle is a kind ofly repeatedly to infuse, transfuse blood and the transparent medical grade plastic apparatus of injection etc. for clinical.
For need in one period every day continuous liquid medicine injection and the patient of blood transfusion for, use remaining needle can exempt the painful and worried of every pin puncture, especially more seem indispensable for old, child and patient with severe symptoms.
Clinical employed remaining needle, more is common remaining needle.This common remaining needle, because its structural deficiency, and after clinical puncture, outside its retention needle tube (puncture needle) tends to be exposed to, so that often the generation puncture needle is hurted sb.'s feelings and is especially stabbed medical personnel's event, and brings potential safety hazard for the clinical use of remaining needle.
Summary of the invention
The purpose of this utility model is to provide a kind of safety indwelling needle, to eliminate clinical use hidden danger, overcomes the deficiency of prior art.
This utility model is realized the technical though of its purpose, is by to its architecture advances, make clinical use remaining needle put in place after, with in the puncture needle setback cylindrical shell, avoid the hurt sb.'s feelings generation of event of puncture needle by push rod.
Based on above-mentioned technical though, this utility model realizes that the technical scheme of its purpose is:
A kind of safety indwelling needle has cylindrical shell, push rod, and locking type female Luer and comprise retention needle tube seat, indwelling needle catheter seat, indwelling needle catheter, retention needle tube and remaining needle nut are at interior indwelling needle assembly; Described push rod and locking type female Luer elasticity snapping, and both are located at successively in the cylindrical shell and are and are slidingly matched; Described indwelling needle assembly can be threaded with the locking type female Luer by its retention needle tube seat, and its innovative point is:
A, be positioned at the equipped position of locking type female Luer and barrel front end, the circular boss groove fit that push rod retreats when being provided with to prevent from using between described locking type female Luer and the cylindrical shell is secondary;
B, be positioned at the equipped position of locking type female Luer and cylinder back-end, between described locking type female Luer and the cylindrical shell, both are respectively equipped with to prevent from again pulling the trigger the first annular protrusion and the second annular protrusion that causes puncture needle to hurt sb.'s feelings.
Can be understood that by above given technical scheme this utility model is because the along the circumferential direction existence of set circular boss groove fit pair, that can prevent effectively that the counteracting force of throw-out lever when puncture produce retreats, and the positive stop of assurance remaining needle; Simultaneously owing to the first along the circumferential direction set annular protrusion and the existence of the second annular protrusion, can prevent effectively that throw-out lever pulls back unsuccessfully, ensure retention needle tube (puncture needle) correctly to pull back in the cylindrical shell and avoid occuring the puncture needle event of hurting sb.'s feelings, thereby realized the purpose of this utility model.
Should be noted that, the above boss groove fit secondary and the first projection and two strength of confronting with each other that structure produces of the second projection, because this utility model is the transparent medical grade plastic product, thereby its countering force is limited, so push-and-pull dynamics that should the moderate control push rod when its clinical use.
Consider that push rod and being connected of locking type female Luer will have enough adhesions, make things convenient for again simultaneously both snappings, this utility model is also advocated, the elasticity snapping of described push rod and locking type female Luer, by the equipped position of described push rod and locking type female Luer set keyway-key matching pair elasticity snapping between the two, and the key/keyway of push rod work surface and the keyway/key of the locking type female Luer rectangular plane of buckling surface of radially pulling back of radially pulling back cooperates, and the other end of described key is domatic.This technical scheme work surface and the rectangular plane of buckling surface is joined platform because it is pulled back, can not produce slip phenomenon and make push rod drive locking type female Luer and retention needle tube pull back, and because the domatic existence of the other end of key, make things convenient for the snapping of push rod and locking type female Luer.
The retention needle tube seat included in view of indwelling needle assembly is to be threaded with being connected of locking type female Luer, rotate along with the rotation of retention needle tube seat in order to prevent the locking type female Luer, make troubles for both being threaded, this utility model is also advocated, be positioned at mutually equipped position of the set key of push rod/keyway the place ahead and locking type female Luer, be provided with at least 1 be used for when the attaching indwelling needle assembly, preventing the rotation of locking type female Luer the second key-keyway is secondary.The purpose of this technical scheme is, make the combination of locking type female Luer and push rod by the second key-keyway pair, hold the rotation that to avoid the locking type female Luer under the condition of push rod at Medical personnel hand, so that being threaded of retention needle tube seat and locking type female Luer.And described the second key-keyway is secondary, can be 1 and also can be 2, even can be that spline structure connects.
When the clinical implementation indwelling needle, the perusal blood back is the foundation of judging that puncture puts in place, and for this reason, this utility model advocates that also described push rod is transparent hollow core structures.But be not limited to this.And when push rod is real cored structure, can observe the blood back situation by transparent retention needle tube seat.But because the actual size of described retention needle tube seat is very little, thereby bring inconvenience for the observation blood back.
For the consideration to this utility model cleaning, can't realize blood back by the putting back-end outflow with owing to vacuum in the push rod in order to prevent behind the blood backflow simultaneously, this utility model is also advocated, also comprises the push rod plug; And it is equipped that described push rod plug and hollow push rod tail end are interference; Described push rod plug is axially arranged with to make the through hole of blood or liquid return.If between push rod plug and push rod mating surface concavo-convex pair is set, then the combination of push rod plug and hollow push rod will be more reliable.
After technique scheme was implemented, it is rational in infrastructure that this utility model has, easy to assembly, and puncture needle is saved from damage appropriate, uses the characteristics such as safety, is apparent.
Description of drawings
Fig. 1 is the structural representation (percussion state) of a kind of specific embodiment of this utility model;
Fig. 2 is the A section enlarged drawing of Fig. 1;
Fig. 3 is the C section enlarged drawing of Fig. 1;
To be this utility model pull back finishing retained needle puncture rear push-rod 2 Fig. 4, and retention needle tube (puncture needle) 4-4 enters the state diagram in the cylindrical shell 1;
Fig. 5 is the B section enlarged drawing of Fig. 4.
The specific embodiment
A kind of typical specific embodiment of this utility model is shown in accompanying drawing 1 ~ 5.
A kind of safety indwelling needle has cylindrical shell 1, push rod 2, and locking type female Luer 3 and comprise retention needle tube seat 4-1, indwelling needle catheter seat 4-2, indwelling needle catheter 4-3, retention needle tube 4-4 and remaining needle nut 4-5 are at interior indwelling needle assembly 4; Described push rod 2 and locking type female Luer 3 elasticity snappings, and both are located at successively in the cylindrical shell 1 and are and are slidingly matched; Described indwelling needle assembly 4 can be threaded with locking type female Luer 3 by its retention needle tube seat 4-1, and its:
A, be positioned at locking type female Luer 3 and the equipped position of cylindrical shell 1 front end, the boss groove fit pair 5 of the circular and cross section semicircular in shape that push rod 2 retreats when being provided with to prevent from using between described locking type female Luer 3 and the cylindrical shell 1;
B, be positioned at locking type female Luer 3 and equipped position, cylindrical shell 1 rear end, between described locking type female Luer 3 and the cylindrical shell 1, both are respectively equipped with to prevent from again pulling the trigger the first annular protrusion 3-1 and the second annular protrusion 1-1 that causes puncture needle to hurt sb.'s feelings; The equal semicircular in shape in cross section of described protruding 3-1,1-1.
And the elasticity snapping of its described push rod 2 and locking type female Luer 3, by described push rod 2 and locking type female Luer 3 equipped positions set circular keyway-key matching pair 6 elasticity snappings along the circumferential direction between the two, and the key/keyway of push rod 2 work surface G and the keyway/key of the locking type female Luer 3 rectangular plane of buckling surface K of radially pulling back of radially pulling back cooperates, and the other end of described key is domatic P.Be positioned at mutually equipped position of push rod 2 set key/keyway the place aheads and locking type female Luer 3, be provided with 2 mutually between 180 ° and the second key that is used for when attaching indwelling needle assembly 4, preventing 3 rotations of locking type female Luer arranged vertically-keyway pair 7.Described push rod 2 is transparent hollow core structures.Also comprise push rod plug 8; And described push rod plug 8 is interference with hollow push rod 2 tail ends and is equipped with; Described push rod plug 8 is axially arranged with to make the through hole 8-1 of blood or liquid return.
This utility model is the medical stainless steel product except retention needle tube (puncture needle), and other is the transparent medical grade plastic product with suitable elastic modelling quantity.
Assembling sequence of the present utility model is: at first with locking type female Luer 3 and push rod 2 attachings, and in push rod plug 8 threading push rods 2 rear ends; Then push rod 2 is put in the cylindrical shell 1 together with locking type female Luer 3, and locking type female Luer 3 is shifted onto cylindrical shell 1 tip position, at this moment can hear the slight sound of " click ", illustrate to be seated; At last indwelling needle assembly 4 is screwed on the locking type female Luer 3 and gets final product.
Percussion use procedure of the present utility model is: after puncturing into human body, see blood back after, the push rod 2 of pulling back, until hear the prompting sound of " click ", push rod 2 can not push back and pull out again this moment, and was in the lock state, and retention needle tube (puncture needle) 4-4 then enters in the cylindrical shell 1 fully.
This utility model first sample trial effect is well, has realized original intention of the present utility model.
Claims (5)
1. safety indwelling needle, has cylindrical shell (1), push rod (2), locking type female Luer (3) and comprise retention needle tube seat (4-1), indwelling needle catheter seat (4-2), indwelling needle catheter (4-3), retention needle tube (4-4) and remaining needle nut (4-5) are in interior indwelling needle assembly (4); Described push rod (2) and locking type female Luer (3) elasticity snapping, and both are located at successively in the cylindrical shell (1) and are and are slidingly matched; Described indwelling needle assembly (4) can be threaded with locking type female Luer (3) by its retention needle tube seat (4-1), it is characterized in that:
A, be positioned at the equipped position of locking type female Luer (3) and cylindrical shell (1) front end, the circular boss groove fit pair (5) that push rod (2) retreats when being provided with to prevent from using between described locking type female Luer (3) and the cylindrical shell (1);
B, be positioned at the equipped position in locking type female Luer (3) and cylindrical shell (1) rear end, between described locking type female Luer (3) and the cylindrical shell (1), both are respectively equipped with to prevent from again pulling the trigger the first annular protrusion (3-1) and the second annular protrusion (1-1) that causes puncture needle to hurt sb.'s feelings.
2. safety indwelling needle according to claim 1, it is characterized in that, the elasticity snapping of described push rod (2) and locking type female Luer (3), by the equipped position of described push rod (2) and locking type female Luer (3) set keyway-key matching pair (6) elasticity snapping between the two, and the key/keyway of push rod (2) work surface (G) and the keyway/key of locking type female Luer (3) buckling surface (K) of radially pulling back of radially pulling back at right angles cooperates on the plane, and the other end of described key is domatic (P).
3. safety indwelling needle according to claim 1, it is characterized in that, be positioned at mutually equipped position of the set key of push rod (2)/keyway the place ahead and locking type female Luer (3), be provided with at least 1 the second key that is used for when attaching indwelling needle assembly (4), preventing locking type female Luer (3) rotation-keyway secondary (7).
4. safety indwelling needle according to claim 1 is characterized in that, described push rod (2) is transparent hollow core structures.
5. safety indwelling needle according to claim 4 is characterized in that, also comprises push rod plug (8); And described push rod plug (8) is interference with hollow push rod (2) tail end and is equipped with; Described push rod plug (8) is axially arranged with to make the through hole (8-1) of blood or liquid return.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220311495 CN202666101U (en) | 2012-06-29 | 2012-06-29 | Safety indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220311495 CN202666101U (en) | 2012-06-29 | 2012-06-29 | Safety indwelling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202666101U true CN202666101U (en) | 2013-01-16 |
Family
ID=47487042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220311495 Expired - Fee Related CN202666101U (en) | 2012-06-29 | 2012-06-29 | Safety indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202666101U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107952168A (en) * | 2017-12-22 | 2018-04-24 | 天津哈娜好医材有限公司 | Lock ring type screwed union and its application method |
-
2012
- 2012-06-29 CN CN 201220311495 patent/CN202666101U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107952168A (en) * | 2017-12-22 | 2018-04-24 | 天津哈娜好医材有限公司 | Lock ring type screwed union and its application method |
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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: 20130116 Termination date: 20150629 |
|
| EXPY | Termination of patent right or utility model |