CN206934403U - A kind of intra arterial injection reverse flow resistant indwelling needle - Google Patents
A kind of intra arterial injection reverse flow resistant indwelling needle Download PDFInfo
- Publication number
- CN206934403U CN206934403U CN201720119624.4U CN201720119624U CN206934403U CN 206934403 U CN206934403 U CN 206934403U CN 201720119624 U CN201720119624 U CN 201720119624U CN 206934403 U CN206934403 U CN 206934403U
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- CN
- China
- Prior art keywords
- plug
- flexible tube
- tube base
- valve
- flow
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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 - Fee Related
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Abstract
It the utility model is related to a kind of medical apparatus, interlinked more particularly to a kind of intra arterial injection reverse flow resistant indwelling needle, including indwelling flexible pipe, flexible tube base and valve for preventing reverse-flow composition, described indwelling flexible pipe with flexible tube base bottom, described valve for preventing reverse-flow is installed in flexible tube base, it is characterised in that：Described valve for preventing reverse-flow includes spring, plug and support member successively from bottom to top, and the fixing end of described spring is connected with flexible tube base inwall, and movable end is connected with plug, and described support member has the opening of up/down perforation and bottom opening offsets with plug.Beneficial effect is possessed by the utility model：(1) structure type of plug is added to instead of traditional silica gel valve valve for preventing reverse-flow by using spring, it is more stable during use, be not in dislocation, sealing effectiveness is more preferable.(2) plug is made using rigid plastics, will not be influenceed by arterial pressure fluctuation, it is ensured that reverse sealing property, will not be polluted blood caused by blood overflow outside.
Description
Technical field
It the utility model is related to a kind of medical apparatus, and in particular to a kind of intra arterial injection reverse flow resistant indwelling needle.
Background technology
Intra arterial injection is medical syringe needle to be penetrated in arterial a kind of medical procedure that blood or decoction are inputted to patient, is
It is easy to repeat administration or changes other medicines, needle of retaining on artery is generally clinically placed in arteries using puncture means
It is interior.Existing artery remaining operation is used cooperatively by puncture needle component and indwelling needle assembly, and puncture needle component is by puncture needle and pin
Seat composition, puncture needle is common stainless steel needle tubing, and harder, front end is needle point, is easy to puncture, and needle stand is located at stainless steel needle tubing tail
End；Indwelling needle assembly is made up of indwelling flexible pipe, flexible tube base and valve for preventing reverse-flow, and indwelling flexible pipe is lucite pipe, softer, be adapted to compared with
In in arteries, existing valve for preventing reverse-flow is silica gel valve for long-time indwelling, i.e., be machined with silica gel in asterism or
Silica gel is divided into 3~4 flaps by criss-cross otch, otch, punctures or flap can open during injection, extract puncture needle or
During injection needle, flap closes under the effect of elasticity tension itself, blocks blood outflow.Such a valve for preventing reverse-flow exists when in use
Following technological deficiency：First, the otch of silica gel valve is in reset or puncture, because flap is flexible, easily in incision
Cause to misplace, do not have the effect of sealing；Two be due to that arterial blood pressure has pressure oscillation, it is easy to makes flap convex
Go out, spray blood, reverse poor sealing performance is unreliable, and blood overflow can cause blood pollution outside.
Utility model content
According to above the deficiencies in the prior art, the utility model provides a kind of intra arterial injection reverse flow resistant indwelling needle, by right
The transformation of valve for preventing reverse-flow in flexible tube base, substitute traditional silica gel valve to design, make it have more preferable operability and sealing
Property.
A kind of intra arterial injection reverse flow resistant indwelling needle described in the utility model, including indwelling flexible pipe, flexible tube base and counterflow-preventing
Valve group is into described indwelling flexible pipe is interlinked with flexible tube base bottom, and described valve for preventing reverse-flow is installed in flexible tube base, and its feature exists
In：Described valve for preventing reverse-flow includes spring, plug and support member, the fixing end and flexible tube base of described spring successively from bottom to top
Inwall is connected, and movable end is connected with plug, and described support member has the opening of up/down perforation and bottom opening offsets with plug.
Wherein, preferred scheme is as follows：
Finite place piece is set on the described flexible tube base inwall both sides positioned in plug scope of activities, on described locating part
Chute is offered, described plug both sides are provided with the protuberance being adapted with chute.Locating part ensure that plug in activity
In journey will not sideslip, avoid plug with being misplaced at support member bottom opening.
The inwall of described flexible tube base is sequentially provided with stage and locating slot, the both upper ends thereof of described support member from top to bottom
Provided with upper end base and it is stuck in stage, bottom both ends are provided with lower end seat and are stuck in locating slot.
Described indwelling flexible pipe is made by PVC material.
Described plug is made by rigid plastics.
The utility model when in use, opens plug by support member top when puncture needle or injection needle, is punctured and noted
Work is penetrated, when exiting, plug resets under the elastic reaction of spring and offseted with support member bottom opening, reaches the work of sealing
With.
Beneficial effect is possessed by the utility model：(1) structure type of plug is added to instead of biography by using spring
The silica gel valve valve for preventing reverse-flow of system, it is more stable during use, be not in dislocation, sealing effectiveness is more preferable.(2) plug is adopted
It is made, will not be influenceed by arterial pressure fluctuation with rigid plastics, it is ensured that reverse sealing property, will not be because of blood
Overflow causes blood to pollute outside.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
In figure：1st, indwelling flexible pipe 2, flexible tube base 3, spring 4, plug 5, support member 6, locating part 7, stage 8, fixed
Position groove 9, upper end base 10, lower end seat.
Embodiment
The utility model is described further with accompanying drawing with reference to embodiments.
Embodiment 1：
As shown in figure 1, a kind of intra arterial injection reverse flow resistant indwelling needle, including indwelling flexible pipe 1, flexible tube base 2 and counterflow-preventing valve group
Into described indwelling flexible pipe 1 is interlinked with the bottom of flexible tube base 2, and described valve for preventing reverse-flow is installed in flexible tube base 2, and described is anti-
Reflux valve includes spring 3, plug 4 and support member 5, fixing end and the inwall phase of flexible tube base 2 of described spring 3 successively from bottom to top
Even, movable end is connected with plug 4, and described support member 5 has the opening of up/down perforation and bottom opening offsets with plug 4.
Described sets finite place piece 6 on the inwall both sides of flexible tube base 2 in the scope of activities of plug 4, and described is spacing
Chute is offered on part 6, the described both sides of plug 4 are provided with the protuberance being adapted with chute.Locating part 6 ensure that plug 4
In active procedure will not sideslip, avoid plug 4 with being misplaced at the bottom opening of support member 5.
The inwall of described flexible tube base 2 is sequentially provided with stage 7 and locating slot 8, the top of described support member 5 from top to bottom
Both ends are provided with upper end base 9 and are stuck in stage 7, and bottom both ends are provided with lower end seat 10 and are stuck in locating slot 8.
Described indwelling flexible pipe 1 is made by PVC material.
Described plug 4 is made by rigid plastics.
When in use, puncture needle or plug 4 is opened by the top of support member 5 during injection needle, punctured and injected work, move back
When going out, plug 4 resets under the elastic reaction of spring 3 and offseted with the bottom opening of support member 5, has the function that sealing.
Claims (5)
1. a kind of intra arterial injection reverse flow resistant indwelling needle, including indwelling flexible pipe, flexible tube base and valve for preventing reverse-flow composition, described indwelling are soft
Pipe is interlinked with flexible tube base bottom, and described valve for preventing reverse-flow is installed in flexible tube base, it is characterised in that：Described valve for preventing reverse-flow by
Lower to include spring, plug and support member successively upwards, the fixing end of described spring is connected with flexible tube base inwall, and movable end is with blocking up
Head is connected, and described support member has the opening of up/down perforation and bottom opening offsets with plug.
A kind of 2. intra arterial injection reverse flow resistant indwelling needle according to claim 1, it is characterised in that：Described lives positioned at plug
Finite place piece is set on flexible tube base inwall both sides in dynamic scope, chute, described plug two are offered on described locating part
Side is provided with the protuberance being adapted with chute.
A kind of 3. intra arterial injection reverse flow resistant indwelling needle according to claim 1, it is characterised in that：Described flexible tube base it is interior
Wall is sequentially provided with stage and locating slot from top to bottom, and the both upper ends thereof of described support member is provided with upper end base and is stuck in stage,
Bottom both ends are provided with lower end seat and are stuck in locating slot.
A kind of 4. intra arterial injection reverse flow resistant indwelling needle according to claim 1, it is characterised in that：Described indwelling flexible pipe by
PVC material is made.
A kind of 5. intra arterial injection reverse flow resistant indwelling needle according to claim 1, it is characterised in that：Described plug is by hard
Plastic production forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720119624.4U CN206934403U (en) | 2017-02-09 | 2017-02-09 | A kind of intra arterial injection reverse flow resistant indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720119624.4U CN206934403U (en) | 2017-02-09 | 2017-02-09 | A kind of intra arterial injection reverse flow resistant indwelling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206934403U true CN206934403U (en) | 2018-01-30 |
Family
ID=61357741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720119624.4U Expired - Fee Related CN206934403U (en) | 2017-02-09 | 2017-02-09 | A kind of intra arterial injection reverse flow resistant indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206934403U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111760125A (en) * | 2020-07-16 | 2020-10-13 | 徐敏旺 | Puncture needle assembly for internal medicine |
-
2017
- 2017-02-09 CN CN201720119624.4U patent/CN206934403U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111760125A (en) * | 2020-07-16 | 2020-10-13 | 徐敏旺 | Puncture needle assembly for internal medicine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180130 Termination date: 20210209 |