CN206613005U - Anti-blood back trochar - Google Patents
Anti-blood back trochar Download PDFInfo
- Publication number
- CN206613005U CN206613005U CN201621428141.4U CN201621428141U CN206613005U CN 206613005 U CN206613005 U CN 206613005U CN 201621428141 U CN201621428141 U CN 201621428141U CN 206613005 U CN206613005 U CN 206613005U
- Authority
- CN
- China
- Prior art keywords
- closing member
- nook closing
- lateral sides
- sleeve pipe
- blood back
- 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 kind of anti-blood back trochar, including nook closing member and sleeve pipe, the end of nook closing member is side length, the inclined-plane puncturing structure that opposite side is short；The end of sleeve pipe is also inclined-plane puncturing structure, and the longer side limit correspondence nook closing member shorter lateral sides of its middle sleeve are set, and is shorter than nook closing member shorter lateral sides, and the longer side limit of the shorter lateral sides correspondence nook closing member of sleeve pipe is set；The head end of described sleeve pipe shorter lateral sides sets an oval anti-blood back thin slice；Anti-blood back thin slice is opened under sleeve opening state, and the comprehensive length of sleeve pipe shorter lateral sides is longer than nook closing member shorter lateral sides and is shorter than nook closing member longer side limit；Under anti-blood back thin slice closed casing mouthful state, the bottom of anti-blood back thin slice is overlapped on sleeve pipe longer side limit head end.The utility model is simple in construction, sleeve opening is closed when blood can be caused to flow back because of various reasons in infusion process automatically, avoid blood to flow into transfusion device and cause the complication such as blocking, the workload of medical personnel is reduced, while reducing the pain that patient punctures repeatedly.
Description
Technical field
The utility model is related to technical field of medical instrument, particularly a kind of puncture needle for being used to be injected intravenously.
Background technology
It is injected intravenously the puncture needle used and is divided into two kinds：One kind is disposable wearing pricker, after the completion of being once injected intravenously
Extract；Another is remaining needle, and remaining needle includes soft conduit and guiding puncture nook closing member, when conduit and nook closing member are pierced into together
It nook closing member withdrawn from when intravascular, can be repeatedly injected intravenously by catheter retaining in the blood vessels, it is to avoid be multiple to puncture to patient
The pain brought, is used for the patient of hospitalization.
However, either disposable wearing pricker or remaining needle all have a problem that, once exactly patient was infusing
Because liquid infused is no and liquid is changed on ground in journey, or after infusion liquid is less than cardiac position, it will vein occur
Blood is passed back into transfusion device, is occurred the adverse events such as catheter blockage, can only be extracted flexible pipe and puncture again, be brought not to nursing staff
Just, more it is the increase in patient suffering.In addition, remaining needle also has one disadvantage in that, it is after the completion of being once injected intravenously, it is necessary to enter
Row tube sealing, it is relatively complicated.
The content of the invention
The utility model technical issues that need to address be to provide it is a kind of be applied to anti-blood back trochar used for intravenous injection,
It can effectively prevent blood back accident during intravenous injection, and during for indwelling blood vessel, without carrying out tube sealing operation, in drop
On the basis of low patient suffering, mitigate medical personnel's workload.
In order to solve the above technical problems, technical solution adopted in the utility model is as follows.
Anti-blood back trochar, including nook closing member and the sleeve pipe being set in outside nook closing member, the end of the nook closing member is side length, phase
The short inclined-plane puncturing structure of offside；The end of described sleeve pipe is also inclined-plane puncturing structure, the longer side limit correspondence pin of its middle sleeve
Core shorter lateral sides are set, and are shorter than nook closing member shorter lateral sides, and the longer side limit of the shorter lateral sides correspondence nook closing member of sleeve pipe is set；The set
The head end of pipe shorter lateral sides sets one can swing or open sleeve opening under pressure differential effect or tilts the ellipse of closed casing mouthful
Circular anti-blood back thin slice；Anti-blood back thin slice is opened under sleeve opening state, and it is shorter that the comprehensive lengths of sleeve pipe shorter lateral sides is longer than nook closing member
Side is simultaneously shorter than nook closing member longer side limit；Under anti-blood back thin slice closed casing mouthful state, the bottom of anti-blood back thin slice is overlapped on sleeve pipe
Longer side limit head end.
Above-mentioned anti-blood back trochar, the head end of described sleeve pipe shorter lateral sides sets a groove for connecting anti-blood back thin slice.
As a result of above technical scheme, technological progress acquired by the utility model is as follows.
The utility model is simple in construction, using differential pressure principle, and an anti-blood back thin slice is set in the end of sleeve pipe, for
When causing the blood to flow back in infusion process because of various reasons, sleeve opening can be closed automatically, it is to avoid blood flows into transfusion device
And cause the complication such as blocking, the workload of medical personnel is reduced, while reducing the pain that patient punctures repeatedly.Similarly,
The utility model can also be used as remaining needle, after intravenous injection is finished, and anti-blood back thin slice meeting automatic fall-back seals sleeve opening
Close, reach tube sealing purpose.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the view during being injected intravenously after the completion of the utility model is punctured；
Fig. 3 is tube sealing view after the completion of the utility model intravenous injection.
Wherein：1. nook closing member, 2. sleeve pipes, 3. anti-blood back thin slices, 4. grooves.
Embodiment
The utility model is further elaborated below in conjunction with the drawings and specific embodiments.
A kind of anti-blood back trochar, its structure are as shown in figure 1, including nook closing member 1 and the sleeve pipe 2 being set in outside nook closing member, pin
The inclined-plane puncturing structure that the end of core is side length, opposite side is short；The end of sleeve pipe also be inclined-plane puncturing structure, but sleeve pipe compared with
Long side correspondence nook closing member shorter lateral sides are set, and are shorter than nook closing member shorter lateral sides, the longer side of the shorter lateral sides correspondence nook closing member of sleeve pipe
Side is set.
The head end of sleeve pipe shorter lateral sides sets an oval anti-blood back thin slice 3, and oval anti-blood back thin slice 3 can be in pressure
Lower realize of difference effect swings, so as to open sleeve opening or tilt closed casing mouthful.In the present embodiment, sleeve pipe shorter lateral sides head end with
The moulding oval anti-blood back thin slice 3 of spill, and groove 4 is left in sleeve pipe shorter side side wall, anti-blood back thin slice can be outside groove
End is swung, in closed casing mouthful state during ensureing that anti-blood back thin slice is not infused.
Anti-blood back thin slice 3 is opened under sleeve opening state, and the comprehensive length of sleeve pipe shorter lateral sides is longer than nook closing member shorter lateral sides simultaneously
It is shorter than nook closing member longer side limit, as shown in Figure 2；Under the closed casing mouthful state of anti-blood back thin slice 3, the bottom of anti-blood back thin slice is overlapped on
Sleeve pipe longer side limit head end, as shown in Figure 3.
Application method of the present utility model is：Before puncture, the puncture needle core of appropriate model need to be chosen, while checking anti-
The integrity of blood back thin slice；There is blood back in puncture process in nook closing member, point out to puncture successfully；Puncture needle core is pulled out after puncturing successfully,
Anti-blood back thin slice acts on lower swing in blood flow, sleeve opening is covered automatically, as shown in figure 3, without blood back；Then, transfusion device is opened to open
Close, start to inject liquid to intravascular, now anti-blood back thin slice is in fluid pressure lower swing to sleeve pipe shorter side avris, such as Fig. 2
It is shown, sleeve opening is opened, checks that whether smooth, such as smoothly input is injected and inputted to liquid, then completes to puncture, it is fixed.Transfusion
After the completion of, such as in remaining needle indwelling blood vessel, then anti-blood back thin slice can cover sleeve opening automatically, realize tube sealing.
Claims (2)
1. anti-blood back trochar, including nook closing member（1）With the sleeve pipe being set in outside nook closing member（2）, it is characterised in that：The nook closing member
The inclined-plane puncturing structure that end is side length, opposite side is short；The end of described sleeve pipe is also inclined-plane puncturing structure, its middle sleeve
Longer side limit corresponds to nook closing member shorter lateral sides and set, and is shorter than nook closing member shorter lateral sides, and the shorter lateral sides of sleeve pipe correspond to the longer of nook closing member
Side is set；
The head end of described sleeve pipe shorter lateral sides sets one can swing or open sleeve opening under pressure differential effect or tilts closing
The oval anti-blood back thin slice of sleeve opening（3）；
Anti-blood back thin slice（3）Open under sleeve opening state, the comprehensive length of sleeve pipe shorter lateral sides is longer than nook closing member shorter lateral sides and short
In nook closing member longer side limit；Anti-blood back thin slice（3）Under closed casing mouthful state, the bottom of anti-blood back thin slice is overlapped on sleeve pipe longer side
End end.
2. anti-blood back trochar according to claim 1, it is characterised in that：The head end of described sleeve pipe shorter lateral sides sets one
Connect anti-blood back thin slice（3）Groove（4）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621428141.4U CN206613005U (en) | 2016-12-24 | 2016-12-24 | Anti-blood back trochar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621428141.4U CN206613005U (en) | 2016-12-24 | 2016-12-24 | Anti-blood back trochar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206613005U true CN206613005U (en) | 2017-11-07 |
Family
ID=60229716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621428141.4U Expired - Fee Related CN206613005U (en) | 2016-12-24 | 2016-12-24 | Anti-blood back trochar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206613005U (en) |
-
2016
- 2016-12-24 CN CN201621428141.4U patent/CN206613005U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20171107 Termination date: 20191224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |