CN201578256U - Controllable negative-pressure syringe - Google Patents
Controllable negative-pressure syringe Download PDFInfo
- Publication number
- CN201578256U CN201578256U CN2009202848556U CN200920284855U CN201578256U CN 201578256 U CN201578256 U CN 201578256U CN 2009202848556 U CN2009202848556 U CN 2009202848556U CN 200920284855 U CN200920284855 U CN 200920284855U CN 201578256 U CN201578256 U CN 201578256U
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- CN
- China
- Prior art keywords
- syringe
- bat
- negative pressure
- piston handle
- doctor
- 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 relates to a medical instrument, in particular to a syringe capable of continuously supplying negative pressure. A pair of semicircular baffles is added to the tail portion of a cylinder, and three short rods are added on a piston handle and are positioned on different horizontal planes but mutually parallel. Before a needle pricks skin of a patient to reach a vein, a user can pull out the piston handle to rotate a certain angle, then the short rods can be clamped onto the semicircular baffles, the front end of the cylinder can generate continuous negative pressure, and the different short rods clamped onto the semicircular baffles can generate different negative pressures. When drawing arterial blood, a doctor can use the cylinder to generate continuous negative pressure via simple operations, and the doctor can focus on searching artery, thereby reducing labor consumption of the doctor, and reducing pricks of the needle to the patient.
Description
Technical field
This utility model relates to a kind of medical device, specifically is a kind of syringe that can continue to provide negative pressure.
Background technology
With conventional syringe when extracting arterial blood, the doctor had both needed to explore with syringe needle the position of tremulous pulse, continued to extract out syringe piston again and made its inner certain negative pressure that keeps, and doctor's muscle power expends many, the corresponding increase of number of times of patient's acupuncture treatment simultaneously, thus the unnecessary misery of patient increased.
Summary of the invention
The problem that this utility model mainly solves is to overcome ordinary syringe can not make its inner deficiency that keeps certain negative pressure, a kind of syringe that oneself produces negative pressure that can control is provided, thereby the muscle power that reduces the doctor expends, and has also reduced the unnecessary misery of patient simultaneously.
The technical solution of the utility model is, at a pair of baffle plate of syringe afterbody symmetry, baffle shapes is while being that straight line is and the circular arc of syringe with diameter, and on piston handle, increase by three bats, and three bats radially are in different horizontal planes along syringe, and three bats axially are in same plane and are parallel to each other along syringe.Distance between baffle plate＜bat length＜syringe diameter.Before syringe needle penetrates the patient and does not reach blood vessel after subcutaneous, can pull out the piston handle bat that rotates to an angle again and can be stuck on the baffle plate, then the syringe front end can produce continuous negative pressure, and uses different bats to be stuck on the semicircle baffle plate can to produce the negative pressure that varies in size.In time syringe needle is inserted block rubber after finishing blood drawing, anti-hemostasis contacts with air.
The beneficial effects of the utility model are, the doctor can make syringe produce continuous negative pressure through above-mentioned shirtsleeve operation when using this utility model to extract arterial blood, and the doctor only need look for tremulous pulse to get final product wholeheartedly.Reduce doctor's muscle power consumption, the corresponding minimizing of number of times of patient's acupuncture treatment simultaneously.
Description of drawings
Below in conjunction with drawings and Examples this utility model is further specified.
Fig. 1 is the figure of this utility model when not using.
Fig. 2 is the vertical view of A-A section among Fig. 1.
Fig. 3 is the figure of this utility model when being used.
Fig. 4 is the vertical view of B-B section among Fig. 3.
Among the figure, 1. baffle plate, 2. bat A, 3. bat B, 4. bat C, 5. piston, 6. negative pressuren zone, 7. block rubber, 8. piston handle, 9. syringe.
The specific embodiment
Among Fig. 1, syringe (9) afterbody increases a pair of symmetric baffle plate (1) and is fixed in syringe, piston handle (8) is cylindrical, on piston handle (8), increased bat A (2) perpendicular to piston handle (8), bat B (3), bat C (4), described bat A (2), bat B (3), bat C (4) is an integral body with piston handle (8), three bats are isometric and be parallel to each other, distance between baffle plate＜bat A (2), the internal diameter of length＜syringe (9) of bat B (3) or bat C (4), piston handle (8) diameter is less than bat A (2), bat B (3), the length of bat C (4), syringe needle are tied on the block rubber (7).
Among Fig. 3, syringe needle is tied on the block rubber (7), after piston handle (8) and bat A (2) are upwards extracted out syringe (9), rotates to an angle, and bat A (2) is stuck on the baffle plate (1) and goes up as Fig. 4, negative pressuren zone this moment (6) district formation negative pressure.
To extract arterial blood with the controllable negative pressure syringe is example, with needle point insert do not reach blood vessel after subcutaneous before, upwards pull up piston handle (8), when bat A (2) highly surpasses the plane at baffle plate (1) place, rotate to an angle, short A (2) is stuck on the baffle plate (1) shown in figure (3), figure (4), and piston (5) is locked, and negative pressuren zone (6) district forms negative pressure.Needle point is inserted in continuation, explores the position of tremulous pulse, and when needle point thrusts tremulous pulse, blood will be inhaled in the needle tubing.Easily finish the extraction of arterial blood.In time syringe needle is inserted block rubber (7) after finishing blood drawing, prevents to contact with air.
In like manner can be stuck in the negative pressure that different sizes are provided on the baffle plate according to the practical situation that uses with bat B (3) or C (4).
Claims (4)
1. controllable negative pressure syringe, comprise syringe needle, syringe (9), piston (5), piston handle (8), it is characterized in that, increase a pair of symmetric baffle plate (1) and be fixed in syringe at described syringe (9) afterbody, piston handle (8) is gone up bat A (2), bat B (3), the bat C (4) that is provided with perpendicular to piston handle (8), described bat A (2), bat B (3), bat C (4) are an integral body with piston handle (8), three bats are isometric and be parallel to each other the internal diameter of length＜syringe (9) of the distance between baffle plate＜bat A (2), bat B (3) or bat C (4).
2. controllable negative pressure syringe according to claim 1 is characterized in that, also comprises block rubber (7), and described syringe needle is tied on the block rubber (7).
3. controllable negative pressure syringe according to claim 1 and 2 is characterized in that, described baffle plate (1) on one side shape be straight line, another side is and the circular arc of syringe with diameter.
4. controllable negative pressure syringe according to claim 1 and 2 is characterized in that, described piston handle (8) is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202848556U CN201578256U (en) | 2009-12-29 | 2009-12-29 | Controllable negative-pressure syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202848556U CN201578256U (en) | 2009-12-29 | 2009-12-29 | Controllable negative-pressure syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201578256U true CN201578256U (en) | 2010-09-15 |
Family
ID=42720247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202848556U Expired - Fee Related CN201578256U (en) | 2009-12-29 | 2009-12-29 | Controllable negative-pressure syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201578256U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494985A (en) * | 2011-12-26 | 2012-06-13 | 山东兰桥医学科技有限公司 | Small negative pressure apparatus |
| CN102553001A (en) * | 2012-02-08 | 2012-07-11 | 王洪华 | Suction negative pressure maintaining device of needle barrel |
| CN104383614A (en) * | 2014-11-26 | 2015-03-04 | 湖南中医药大学 | Syringe for extracting joint effusion |
-
2009
- 2009-12-29 CN CN2009202848556U patent/CN201578256U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494985A (en) * | 2011-12-26 | 2012-06-13 | 山东兰桥医学科技有限公司 | Small negative pressure apparatus |
| CN102553001A (en) * | 2012-02-08 | 2012-07-11 | 王洪华 | Suction negative pressure maintaining device of needle barrel |
| CN104383614A (en) * | 2014-11-26 | 2015-03-04 | 湖南中医药大学 | Syringe for extracting joint effusion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20101229 |