CN203663168U - Disposable positive-pressure remaining needle - Google Patents
Disposable positive-pressure remaining needle Download PDFInfo
- Publication number
- CN203663168U CN203663168U CN201320431626.9U CN201320431626U CN203663168U CN 203663168 U CN203663168 U CN 203663168U CN 201320431626 U CN201320431626 U CN 201320431626U CN 203663168 U CN203663168 U CN 203663168U
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- CN
- China
- Prior art keywords
- push rod
- casing seat
- needle
- piston
- sleeve pipe
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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.)
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a disposable positive-pressure remaining needle which comprises a sleeve pipe seat. A piston is arranged in the sleeve pipe seat and is fixed on a push rod, a through hole is formed in the push rod, a clamping position used for preventing the push rod from being pulled out outwards is arranged in the sleeve pipe seat, a spring in the sleeve pipe seat is arranged to make contact with the push rod, interactional force is generated between the sleeve pipe seat and the push rod by the spring, a needle seat outside the push rod is fixedly connected with a needle tubing, the needle tubing is in the through hole of the push rod, penetrates out of the piston and is arranged in a sleeve pipe in a sleeved mode, and a limiting position used for preventing the needle seat from squeezing the push rod is arranged on the needle seat. The disposable positive-pressure remaining needle is simple in structure, convenient to operate, safe and reliable, low in production cost and capable of being widely applied to clinic venous transfusion in medical treatment.
Description
Technical field
This utility model relates to a kind of disposable use positive pressure remaining needle.
Background technology
At present, in medical treatment is clinical, by venipuncture transfuse blood, transfusion or drug injection are modal method in treatment clinical disease patient process.But, existing medical personnel give clinical disease patient carry out in the treatment of venipuncture blood transfusion, transfusion or drug injection, be generally venoclysis needle, entry needle puncture, because various diseases situation is different or be subject to the restriction of the condition of clinical disease patient own, there will be needs prolonged and repeated repeatedly puncture transfusion or will repeatedly add the situation of injecting medical liquid in liquid-transport pipe-line temporarily in single transfusion, thereby bringing unnecessary misery to clinical disease patient.
Utility model content
The purpose of this utility model is that a kind of disposable use positive pressure remaining needle will be provided, to overcome existing venoclysis needle, entry needle clinical disease patient being carried out in the treatment of venipuncture blood transfusion, transfusion or drug injection, may need prolonged and repeated repeatedly puncture transfusion or will repeatedly add injecting medical liquid temporarily in single transfusion, the clinical disease patient that gives brings the defect of unnecessary misery.
The purpose of this utility model is achieved in that this utility model comprises casing seat, in described casing seat, there is piston, described piston is fixed on push rod, in described push rod, there is a through hole, the screens that has a prevention push rod to extract outward in described casing seat, in described casing seat, there is a spring to be placed in the position contacting with push rod, described spring produces an interactional power between casing seat and push rod, the needle stand being placed in outside described push rod is fixedly connected with needle tubing, described needle tubing passes and is enclosed within sleeve pipe in the through hole of push rod and from piston, described needle stand has the spacing of a prevention needle stand pressure-ram.
Further, this utility model comprises casing seat, in described casing seat, there is piston, described piston is fixed on push rod, in described push rod, there is a through hole, the screens that has a prevention push rod to extract outward in described casing seat, in described casing seat, there is a spring to be placed in the position contacting with piston, described spring produces an interactional power between casing seat and push rod, the needle stand being placed in outside described push rod is fixedly connected with needle tubing, described needle tubing passes and is enclosed within sleeve pipe in the through hole of push rod and from piston, and described needle stand has the spacing of a prevention needle stand pressure-ram.
Further, this utility model comprises casing seat, in described casing seat, there is piston, described piston is fixed on push rod, and described push rod has the handle of a pull push rod, has a through hole in described push rod, the screens that has a prevention push rod to extract outward in described casing seat, the needle stand being placed in outside described push rod is fixedly connected with needle tubing, and described needle tubing passes and is enclosed within sleeve pipe in the through hole of push rod and from piston, and described needle stand has the spacing of a prevention needle stand pressure-ram.
This utility model is simple in structure, easy to operate, safe and reliable, and production cost is low.It can be widely used in clinical vein transfusion in aspect medical.
Accompanying drawing explanation
Fig. 1, be according to one of this utility model embodiment propose transfusion pre-structure schematic diagram;
Fig. 2, be according to one of this utility model embodiment propose transfusion finish rear structural representation;
Fig. 3, be according to this utility model embodiment two propose transfusion pre-structure schematic diagrams;
Fig. 4, be according to this utility model embodiment two propose transfusions finish rear structural representation;
Fig. 5, be according to this utility model embodiment three propose transfusion pre-structure schematic diagrams;
Fig. 6, be according to this utility model embodiment three propose transfusions finish rear structural representation.
The specific embodiment
Below in conjunction with drawings and Examples, structure of the present utility model is further described:
Labelling in figure: 1, sheath; 2, sleeve pipe; 3, self-locking device; 4, casing seat; 5, piston; 6, push rod; 7, spring; 8, needle stand; 9, needle tubing; 10, extend transfusion catheter; 11, stop liquid sheet.
At Fig. 1, in Fig. 2, one of this utility model embodiment, comprise casing seat (4), in described casing seat (4), there is piston (5), described piston (5) is fixed on push rod (6), described push rod has a through hole in (6), the screens that has a prevention push rod (6) to extract outward in described casing seat (4), in described casing seat (4), there is a spring (7) to be placed in the position contacting with push rod (6), described spring (7) produces an interactional power between casing seat (4) and push rod (6), being placed in the outer needle stand (8) of described push rod (6) is fixedly connected with needle tubing (9), described needle tubing (9) passes and is enclosed within sleeve pipe (2) in the through hole of push rod (6) and from piston (5), described needle stand (8) has the spacing of prevention needle stand (8) pressure-ram (6).
In actual use, pull out the sheath (1) being enclosed within on sleeve pipe (2), when operation completes after venipuncture, extract needle tubing (9), the aperture self-closed that piston (5) is passed by needle tubing (9), infuse the same with conventional remaining needle of sleeve pipe (2) indwelling intravenous.Medicinal liquid flows in casing seat (4) from extending transfusion catheter (10), and piston (5) stops medicinal liquid to flow out outward can only pass through forward sleeve pipe (2) inflow blood vessel.In the time that transfusion time-out carries out tube sealing, close prolongation transfusion catheter (10) with stopping liquid sheet (11), promote push rod (6) and make piston (5) forward, now, in casing seat (4), produce malleation, blood in a part of remaining medicinal liquid and/or sleeve pipe (2) is pushed in blood vessel, reach the effect that prevents thrombosis.Push rod (6) is shifted casing seat (4) outer face onto and is stopped voluntarily, and design can be locked push rod (6) at the self-locking device (3) of casing seat (4) port and be prevented that it from shrinking back and extracting outward.In the time proceeding to infuse, untie self-locking device (3), push rod (6) is subject to the resilience force effect of spring (7) and self-resetting, meanwhile, produces negative pressure in casing seat (4), sees blood back and can infuse.
At Fig. 3, in Fig. 4, two of this utility model embodiment, comprise casing seat (4), in described casing seat (4), there is piston (5), described piston (5) is fixed on push rod (6), described push rod has a through hole in (6), the screens that has a prevention push rod (6) to extract outward in described casing seat (4), in described casing seat (4), there is a spring (7) to be placed in the position contacting with piston (5), described spring (7) produces an interactional power between casing seat (4) and push rod (6), being placed in the outer needle stand (8) of described push rod (6) is fixedly connected with needle tubing (9), described needle tubing (9) passes and is enclosed within sleeve pipe (2) in the through hole of push rod (6) and from piston (5), described needle stand (8) has the spacing of prevention needle stand (8) pressure-ram (6).
In actual use, pull out the sheath (1) being enclosed within on sleeve pipe (2), when operation completes after venipuncture, extract needle tubing (9), the aperture self-closed that piston (5) is passed by needle tubing (9), infuse the same with conventional remaining needle of sleeve pipe (2) indwelling intravenous.Medicinal liquid flows in casing seat (4) from extending transfusion catheter (10), and piston (5) stops medicinal liquid to flow out outward can only pass through forward sleeve pipe (2) inflow blood vessel.In the time that transfusion time-out carries out tube sealing, close prolongation transfusion catheter (10) with stopping liquid sheet (11), promote push rod (6) and make piston (5) forward, now, in casing seat (4), produce malleation, blood in a part of remaining medicinal liquid and/or sleeve pipe (2) is pushed in blood vessel, reach the effect that prevents thrombosis.Push rod (6) is shifted casing seat (4) outer face onto and is stopped voluntarily, and design can be locked push rod (6) at the self-locking device (3) of casing seat (4) port and be prevented that it from shrinking back and extracting outward.In the time proceeding to infuse, untie self-locking device (3), piston (5) is subject to the resilience force effect of spring (7) and self-resetting, meanwhile, produces negative pressure in casing seat (4), sees blood back and can infuse.
At Fig. 5, in Fig. 6, three of this utility model embodiment, comprise casing seat (4), in described casing seat (4), there is piston (5), described piston (5) is fixed on push rod (6), described push rod (6) has the hands handle of a pull push rod (6), described push rod has a through hole in (6), the screens that has a prevention push rod (6) to extract outward in described casing seat (4), being placed in the outer needle stand (8) of described push rod (6) is fixedly connected with needle tubing (9), described needle tubing (9) passes and is enclosed within sleeve pipe (2) in the through hole of push rod (6) and from piston (5), described needle stand (8) has the spacing of prevention needle stand (8) pressure-ram (6).
In actual use, pull out the sheath (1) being enclosed within on sleeve pipe (2), when operation completes after venipuncture, extract needle tubing (9), the aperture self-closed that piston (5) is passed by needle tubing (9), infuse the same with conventional remaining needle of sleeve pipe (2) indwelling intravenous.Medicinal liquid flows in casing seat (4) from extending transfusion catheter (10), and piston (5) stops medicinal liquid to flow out outward can only pass through forward sleeve pipe (2) inflow blood vessel.In the time that transfusion time-out carries out tube sealing, close prolongation transfusion catheter (10) with stopping liquid sheet (11), promote push rod (6) and make piston (5) forward, now, in casing seat (4), produce malleation, blood in a part of remaining medicinal liquid and/or sleeve pipe (2) is pushed in blood vessel, reach the effect that prevents thrombosis.Push rod (6) is shifted casing seat (4) outer face onto and is stopped voluntarily, and design can be locked push rod (6) at the self-locking device (3) of casing seat (4) port and be prevented that it from shrinking back and extracting outward.In the time proceeding to infuse, untie self-locking device (3), pull push rod (6) resets it, meanwhile, produces negative pressure in casing seat (4), sees blood back and can infuse.
Above-described is only preferential embodiment of the present utility model.It should be pointed out that to those skilled in the art, not departing under the prerequisite of this utility model principle, can also make some modification and improvement, this is also considered as belonging to protection domain of the present utility model.For example, spring recited above (7), is not limited to spring (7) itself, also comprises any elastomer with spring action, that is to say that any elastomer with spring action can substitute spring (7).
Claims (8)
1. a disposable use positive pressure remaining needle, comprise casing seat (4), it is characterized in that: in described casing seat (4), have piston (5), described piston (5) is fixed on push rod (6), described push rod has a through hole in (6), the screens that has a prevention push rod (6) to extract outward in described casing seat (4), in described casing seat (4), there is a spring (7) to be placed in the position contacting with push rod (6), described spring (7) produces an interactional power between casing seat (4) and push rod (6), being placed in the outer needle stand (8) of described push rod (6) is fixedly connected with needle tubing (9), described needle tubing (9) passes and is enclosed within sleeve pipe (2) in the through hole of push rod (6) and from piston (5), described needle stand (8) has the spacing of prevention needle stand (8) pressure-ram (6).
2. disposable use positive pressure remaining needle according to claim 1, is characterized in that: described spring (7), also comprises any elastomer with spring action.
3. disposable use positive pressure remaining needle according to claim 1, is characterized in that: described casing seat (4) also has self-locking device (3) in its port design.
4. a disposable use positive pressure remaining needle, comprise casing seat (4), it is characterized in that: in described casing seat (4), have piston (5), described piston (5) is fixed on push rod (6), described push rod has a through hole in (6), the screens that has a prevention push rod (6) to extract outward in described casing seat (4), in described casing seat (4), there is a spring (7) to be placed in the position contacting with piston (5), described spring (7) produces an interactional power between casing seat (4) and push rod (6), being placed in the outer needle stand (8) of described push rod (6) is fixedly connected with needle tubing (9), described needle tubing (9) passes and is enclosed within sleeve pipe (2) in the through hole of push rod (6) and from piston (5), described needle stand (8) has the spacing of prevention needle stand (8) pressure-ram (6).
5. disposable use positive pressure remaining needle according to claim 4, is characterized in that: described spring (7), also comprises any elastomer with spring action.
6. disposable use positive pressure remaining needle according to claim 4, is characterized in that: described casing seat (4) also has self-locking device (3) in its port design.
7. a disposable use positive pressure remaining needle, comprise casing seat (4), it is characterized in that: in described casing seat (4), have piston (5), described piston (5) is fixed on push rod (6), described push rod (6) has the hands handle of a pull push rod (6), described push rod has a through hole in (6), the screens that has a prevention push rod (6) to extract outward in described casing seat (4), being placed in the outer needle stand (8) of described push rod (6) is fixedly connected with needle tubing (9), described needle tubing (9) passes and is enclosed within sleeve pipe (2) in the through hole of push rod (6) and from piston (5), described needle stand (8) has the spacing of prevention needle stand (8) pressure-ram (6).
8. disposable use positive pressure remaining needle according to claim 7, is characterized in that: described casing seat (4) also has self-locking device (3) in its port design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320431626.9U CN203663168U (en) | 2013-07-19 | 2013-07-19 | Disposable positive-pressure remaining needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320431626.9U CN203663168U (en) | 2013-07-19 | 2013-07-19 | Disposable positive-pressure remaining needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203663168U true CN203663168U (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320431626.9U Expired - Fee Related CN203663168U (en) | 2013-07-19 | 2013-07-19 | Disposable positive-pressure remaining needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203663168U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251079A (en) * | 2015-07-31 | 2016-01-20 | 河南曙光健士医疗器械集团股份有限公司 | Anti-thrombosis remaining needle device |
-
2013
- 2013-07-19 CN CN201320431626.9U patent/CN203663168U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251079A (en) * | 2015-07-31 | 2016-01-20 | 河南曙光健士医疗器械集团股份有限公司 | Anti-thrombosis remaining needle device |
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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: 20140625 Termination date: 20210719 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |