CN2794528Y - Transfusion needle - Google Patents
Transfusion needle Download PDFInfo
- Publication number
- CN2794528Y CN2794528Y CN 200520083394 CN200520083394U CN2794528Y CN 2794528 Y CN2794528 Y CN 2794528Y CN 200520083394 CN200520083394 CN 200520083394 CN 200520083394 U CN200520083394 U CN 200520083394U CN 2794528 Y CN2794528 Y CN 2794528Y
- Authority
- CN
- China
- Prior art keywords
- transfusion
- puncture needle
- trocar sheath
- needle
- outer sleeve
- 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 transfusion needle which comprises a puncture needle, an outer sleeve pipe and a transfusion guiding pipe, wherein the outer sleeve pipe forms a hollow cylindrical shape; the puncture needle is in a half cylindrical shape and forms a groove shape, and the head part of the puncture needle is sharp; when the puncture needle is arranged in the outer sleeve pipe, the puncture needle is connected with the outer sleeve pipe is a sliding mode; the transfusion guiding pipe is connected with the tail part of the outer sleeve pipe; the position on the transfusion guiding pipe approaching to the tail part of the outer sleeve pipe is provided with an outward convex closing mouth, the puncture needle enters the outer sleeve pipe from the closing mouth and the puncture needle is sheathed in the outer sleeve pipe. The utility model realizes that a blood return condition is fast observed during venipuncture, controls puncture opportunity in time and enhances the success ratio of puncture.
Description
Technical field
This utility model relates to a kind of medical infusion pin.
Background technology
Existing venoclysis needle comprises a trocar sheath, puncture needle, transfusion catheter, puncture needle is a hollow cylinder, head is sharp, and its afterbody is haemocoele once, and trocar sheath is the hollow cylinder flexible pipe, its head has an inclined-plane, afterbody is the jag shape, and a fork connects transfusion catheter, and a fork has closed mouthful, puncture needle passes closed mouthful and enters in the trocar sheath, and puncture needle and trocar sheath are slidingly fitted.Its operating process is: after syringe needle (comprising puncture needle and trocar sheath) thrusts vein, visible blood-flow flows in the blood back cavity of its afterbody through puncture needle, venipuncture success this moment, at this moment can hold the puncture needle afterbody, trocar sheath can be extracted puncture needle after vein advances a little, this moment, liquid can be through transfusion catheter, trocar sheath and afferent veins.
But, there is following shortcoming in this venoclysis needle: (1) is because puncture needle is metal, opaque, and blood back cavity is positioned at its afterbody, therefore, must wait blood back to flow to differentiate in the blood back cavity of afterbody whether success of puncture, prolong the operating time, reduce puncture success rate, increased patient's misery.(2) after puncturing successfully, because the afterbody of trocar sheath is the jag shape, transfusion catheter is the center of gravity secundly in actual infusion process, forms a fulcrum in puncture orifice, under the action of gravity of transfusion catheter, can make trocar sheath be prone to bending at the puncture orifice place.
The utility model content
In order to overcome the problem that existing transfusion needle can not be observed blood back fast, this utility model provides a kind of short transfusion needle of blood back time of observing.
The technical scheme that this utility model adopted is: a kind of transfusion needle, comprise puncture needle, trocar sheath, transfusion catheter, trocar sheath is a hollow cylinder, the puncture needle head is sharp, when being positioned at trocar sheath, puncture needle can be slidingly fitted with it, transfusion catheter is connected with the trocar sheath afterbody, it is characterized in that: puncture needle is the groove shape for half-cylindrical.
The tail end of described trocar sheath is smooth flat mouthful, and transfusion catheter directly is connected with the trocar sheath tail end, has one outwards outstanding closed mouthful near trocar sheath afterbody place on transfusion catheter, and puncture needle can enter in the trocar sheath from closed mouth.
The wall at closed mouthful of place on the described transfusion catheter is thicker than the wall of tube for transfusion other parts.
The afterbody of described puncture needle is a bending shape, respectively is fixed with a wing in the both sides of bending part.
Described trocar sheath head is smooth flat mouthful, is fixed with a wing on the side of its afterbody.
Described trocar sheath is a silica gel hose.
Described trocar sheath is a metal tube.
The beneficial effects of the utility model are: one, because puncture needle adopts half round post, make the shared space minimizing of pin in the sleeve pipe, be convenient to blood back, therefore more can in time grasp puncture opportunity, improve puncture success rate, its afterbody bending is convenient to keep somewhere outside on transfusion catheter closed mouthful, is easier to operation.Two, owing to establish closed mouthful on transfusion catheter, transfusion catheter and skin are smooth, can be owing to the effect of transfusion catheter gravity, and the phenomenon that causes soft pin easily to give a discount.Three, because the transfusion needle afterbody has the wing, be convenient to operation, simultaneously, be easy to be fixed difficult drop-off during patient activity with adhesive tape in that it fixedly the time, has been increased contact surface.Four, because the head of trocar sheath is smooth flat mouthful, be easier to transfusion, and easy damaged or penetrate blood vessel and cause the transfusion failure not; Be difficult for the bending distortion when five, trocar sheath is for metal tube.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of puncture needle of the present utility model.
Fig. 3 is the structural representation of trocar sheath of the present utility model and transfusion catheter.
The specific embodiment
The structure of an embodiment of this utility model, as Fig. 1, Fig. 2, shown in Figure 3, this transfusion needle mainly comprises puncture needle 1, trocar sheath 2, transfusion catheter 3.Trocar sheath 2 is a hollow cylinder, can be that silica gel hose also can be a metal tube, its head and afterbody are smooth flat mouthful, on the side of afterbody, be fixed with a wing 5, be convenient in infusion process, be fixed with adhesive tape, because the area of the wing is bigger, when the people is movable, still can be fixed on reliably on the skin; Transfusion catheter 3 fixes with the afterbody of trocar sheath 2, near trocar sheath 2 afterbody places the one outwards outstanding closed mouth 4 of silica gel is arranged on transfusion catheter 3; Puncture needle 1 is half-cylindrical, is the groove shape, the sharp vein blood vessel that punctures of being convenient to of its head, and the afterbody of puncture needle 1 is a bending shape, in the both sides of bending part a wing 6 is arranged respectively, is convenient to carry out puncture procedure, and when puncture procedure is finished, is convenient to extract out puncture needle 1; When puncture needle 1 closed mouthful 4 from the transfusion catheter 3 enters, when being placed in the trocar sheath 2, the afterbody of its bending shape is stayed outside closed mouthful 4 of tube for transfusion 3, and when puncture needle 1 was positioned at trocar sheath 2, the two was for being slidingly matched; The wall of wall ratio transfusion catheter 3 other parts at closed mouthful 4 places is thicker, can reliably guarantee to extract puncture needle 1 back and still be in closure state for closed mouthful 4, and the liquid in the transfusion catheter 3 is not leaked outside.
Transfusion needle can be divided into large, trumpet by purposes.
Its operating process is: after syringe needle (comprising puncture needle 1 and trocar sheath 2) is thrust vein, can stand and see that blood back flows in puncture needle 1 groove, show the venipuncture success, can extract puncture needle 1 with trocar sheath 2 this moment after vein advances a little, owing to have the self-closing function for closed mouthful 4, after extracting puncture needle 1, liquid still can be through transfusion catheter 3, trocar sheath 2 and afferent veins.
Claims (7)
1, a kind of transfusion needle, comprise puncture needle, trocar sheath, transfusion catheter, trocar sheath is a hollow cylinder, the puncture needle head is sharp, when being positioned at trocar sheath, puncture needle can be slidingly fitted with it, transfusion catheter is connected with the trocar sheath afterbody, it is characterized in that: puncture needle is the groove shape for half-cylindrical.
2, transfusion needle according to claim 1, it is characterized in that: the tail end of described trocar sheath is smooth flat mouthful, transfusion catheter directly is connected with the trocar sheath tail end, has one outwards outstanding closed mouthful near trocar sheath afterbody place on transfusion catheter, and puncture needle can enter in the trocar sheath from closed mouth.
3, transfusion needle according to claim 2 is characterized in that: the wall at closed mouthful of place on the described transfusion catheter is thicker than the wall of tube for transfusion other parts.
4, transfusion needle according to claim 1 and 2 is characterized in that: the afterbody of described puncture needle is a bending shape, respectively is fixed with a wing in the both sides of bending part.
5, transfusion needle according to claim 1 and 2 is characterized in that: described trocar sheath head is smooth flat mouthful, is fixed with a wing on the side of its afterbody.
6, transfusion needle according to claim 1 and 2 is characterized in that: described trocar sheath is a silica gel hose.
7, transfusion needle according to claim 1 and 2 is characterized in that: described trocar sheath is a metal tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520083394 CN2794528Y (en) | 2005-05-23 | 2005-05-23 | Transfusion needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520083394 CN2794528Y (en) | 2005-05-23 | 2005-05-23 | Transfusion needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2794528Y true CN2794528Y (en) | 2006-07-12 |
Family
ID=36812295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520083394 Expired - Fee Related CN2794528Y (en) | 2005-05-23 | 2005-05-23 | Transfusion needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2794528Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439214B (en) * | 2007-10-29 | 2013-10-30 | 生命扫描有限公司 | Medical device flexible conduit and method of manufacture |
-
2005
- 2005-05-23 CN CN 200520083394 patent/CN2794528Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439214B (en) * | 2007-10-29 | 2013-10-30 | 生命扫描有限公司 | Medical device flexible conduit and method of manufacture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |