CN2244409Y - Ball valve single-flowing direction syringe needle - Google Patents
Ball valve single-flowing direction syringe needle Download PDFInfo
- Publication number
- CN2244409Y CN2244409Y CN 95208605 CN95208605U CN2244409Y CN 2244409 Y CN2244409 Y CN 2244409Y CN 95208605 CN95208605 CN 95208605 CN 95208605 U CN95208605 U CN 95208605U CN 2244409 Y CN2244409 Y CN 2244409Y
- Authority
- CN
- China
- Prior art keywords
- needle
- needle stand
- ball
- syringe needle
- injection
- 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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Abstract
The utility model relates to a medical ball valve single-flowing direction syringe needle which can prevent gas and liquid from counterflow. The needle stand of an ordinary syringe needle is lengthened, and a needle stand cavity is enlarged. One end of the needle stand cavity is circular, and the other end is not circular. A ball of proper specific gravity is arranged in the needle stand cavity to be used as a valve. A valve ball and the circular end of the needle stand cavity are in close contact to close the inner channel of the syringe needle. The valve ball and the non circular end of the needle stand cavity can not be in close contact, so the inner channel of the syringe needle can not be closed. Thus, the single-flowing function of the syringe needle is added. The flow directions of the ball valve single-flowing direction syringe needle are positive and inverse directions. The utility model can be used for puncturing and pumping liquid accumulated in a body cavity, pressurizing the air of closed venous transfusion, etc.
Description
This utility model relates to a kind of medical extraordinary injection needle, and the ball valve single current that can prevent gas, liquid countercurrent in use is to injection needle.
The injection needle of present clinical use, its pin internal channel can free flow, in some treatments, can bring a lot of inconvenience with this normal injection syringe needle, as: 1, the puncture suction of hydrothorax, generally be to connect the normal injection syringe needle with syringe to operate, when syringe drawing liquid body reaches capacity range, when needing emptying, the needle stand of syringe from injection needle must be unloaded, engage with injection needle again after the device emptying to be injected, continue suction.Syringe unload down from the needle stand of injection needle during this period of time in, for preventing to inject pin hole air inlet in the thoracic cavity, generally be to block the injection needle uropore, or connect one section rubber tube at the injection needle afterbody and control air inlet with finger.2, adopt enclosed venoclysis, can inject the air fast transfusion of pressurizeing in infusion bottle, one of main deficiency of this method is that injection needle can not remain on the rubber closure of transfusion, and the rubber closure of infusion bottle is after normal injection syringe needle repeated localised puncture, can damaged discharge, or the like.
The purpose of this utility model provides a kind of ball valve single current to injection needle, and it can pass through liquids and gases according to the needs of treatment smoothly, and adverse current does not take place.
The purpose of this utility model is achieved in that the suitable lengthening of the needle stand of normal injection syringe needle part, and the length of increase can be satisfied the demand during for two times of its diameter, and the needle stand chamber enlarges, and makes it greater than the needle stand uropore.The needle stand chamber that enlarges, an end is a circular configuration, the other end is a non-circular structure.The needle stand intracavity is put a ball, and its diameter is less than needle stand intracavity footpath, greater than needle stand uropore diameter.Ball proportion uses more convenient when every cubic centimetre of 0.2-1.0 gram, will consider the influence of gravity to the ball position when proportion is big, and fluidic pressure was the principal element that influences the ball position when proportion was not more than every cubic centimetre 1 gram.Needle stand intracavity ball can form close the contact with the round nose in needle stand chamber, closes the pin internal channel; Ball can not form close the contact with the non-circular end in needle stand chamber, can not the anesthesia needle internal channel.The ball of needle stand intracavity has played the effect of valve.So just constituted extraordinary injection needle with one-way flow function.This injection needle has two kinds of forward circulation and reverse circulated, can be indicated on the needle stand surface.During clinical use, can according to the needs of the state of an illness select for use a kind of appropriate flow to injection needle.As make the puncture suction of hydrothorax, can select for use can only reverse circulated, single current that can not the forward circulation is to injection needle, and the problem in the air gas leakage thoracic cavity of needn't worrying; When the injection air method pressurization of carrying out enclosed venoclysis is infused fast, can select for use and can only circulate by forward, single current that can not reverse circulated is made the gas injection pin to injection needle, like this can be easily in infusion bottle the injection air pressurize, and the problem of bottle stopper and syringe needle leakage can not take place.
Owing to adopt such scheme, can make treatments such as hydrothorax puncture suction, the quick transfusion of injection air method pressurization carry out fasterly; Quality is higher; Single current is further replenishing normal injection syringe needle function to injection needle.
Below in conjunction with drawings and Examples this utility model is done step explanation:
Fig. 1 is the vertical section structural map of first embodiment of this utility model.
Fig. 2 is Figure 1A-A section plan.
Fig. 3 is vertical section structural map and the A-A section plan thereof of ball valve single current to second embodiment of injection needle.
Fig. 4 is that the ball valve single current is assembled sketch map to injection needle.
Among the figure 1, needle stand 2, valve ball 3, needle stand chamber 4, needle body 5, uropore 6, the non-nose circle 7 in needle stand chamber, needle stand chamber round nose 8, interface line.
In Fig. 1, needle stand (1) suitably extends than the normal injection needle seat, needle stand chamber (3) enlarges, one end is round nose (7), and an end is non-nose circle (6), needle stand chamber (3) built-in valve ball (2), the diameter of ball is less than the diameter of needle stand chamber (3), greater than the diameter of uropore (5), when valve ball (2) and needle stand chamber round nose (7) when contacting, but the anesthesia needle internal channel; When valve ball (2) and the non-nose circle in needle stand chamber (6) when contacting, the pin internal channel can not seal, and makes injection needle have single current to function thus.This pin allows to flow to reverse.Fig. 2 is the structural representation of the non-nose circle in needle stand chamber among Fig. 1.
Fig. 3 is second embodiment of ball valve single current to injection needle, and principle is identical with Fig. 1, and the circle in needle stand chamber is opposite with non-circular end position, allows to flow to return mutually.
Fig. 4 is possible assembling form signal, and is reasonable according to what expand with heat and contract with cold, and the heating of needle stand rear portion connects together with the needle stand front portion after splashing and expanding.
Claims (3)
1, a kind of ball valve single current is to injection needle, and in the normal injection syringe needle, the needle stand chamber is consistent with the uropore diameter, and is cylindrical, can engage with syringe nozzle, it is characterized in that: the needle stand intracavity contains a ball.
2, ball valve single current according to claim 1 is characterized in that to injection needle: the needle stand lengthening, and the needle stand chamber enlarges, and internal diameter is bigger than uropore diameter; Needle stand chamber one end is a circular configuration, and the other end is a non-circular structure.
3, ball valve single current according to claim 1 is characterized in that to injection needle: needle stand intracavity ball diameter is less than needle stand intracavity footpath, greater than needle stand uropore diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95208605 CN2244409Y (en) | 1995-04-11 | 1995-04-11 | Ball valve single-flowing direction syringe needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95208605 CN2244409Y (en) | 1995-04-11 | 1995-04-11 | Ball valve single-flowing direction syringe needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2244409Y true CN2244409Y (en) | 1997-01-08 |
Family
ID=33859883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95208605 Expired - Fee Related CN2244409Y (en) | 1995-04-11 | 1995-04-11 | Ball valve single-flowing direction syringe needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2244409Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101785890A (en) * | 2010-03-19 | 2010-07-28 | 蔡桂芳 | Disposable transfusion puncture outfit with two-way valve function and method thereof |
| US20120130236A1 (en) * | 2010-11-24 | 2012-05-24 | Acist Medical Systems, Inc. | Contrast media injector syringe inlet valve system |
| CN101312759B (en) * | 2004-12-24 | 2013-04-10 | 科林专利控股有限公司 | Safety syringe |
| CN103990207A (en) * | 2014-05-13 | 2014-08-20 | 沈悦 | Connecting base structure for injection |
| CN104083818A (en) * | 2014-07-21 | 2014-10-08 | 李为松 | Intravenous injector and intravenous injector needle |
| CN106092705A (en) * | 2016-06-12 | 2016-11-09 | 上海裕隆生物科技有限公司 | A kind of self-closed type single current to dyeing pin group |
| US10376687B2 (en) | 2012-10-16 | 2019-08-13 | Acist Medical Systems, Inc. | Controlling flow in a medical injection system |
| US11560964B2 (en) | 2020-08-21 | 2023-01-24 | Acist Medical Systems, Inc. | Valve actuation device coupling |
-
1995
- 1995-04-11 CN CN 95208605 patent/CN2244409Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101312759B (en) * | 2004-12-24 | 2013-04-10 | 科林专利控股有限公司 | Safety syringe |
| CN101785890A (en) * | 2010-03-19 | 2010-07-28 | 蔡桂芳 | Disposable transfusion puncture outfit with two-way valve function and method thereof |
| US10322277B2 (en) | 2010-11-24 | 2019-06-18 | Acist Medical Systems, Inc. | Contrast media injector syringe inlet valve system |
| US20120130236A1 (en) * | 2010-11-24 | 2012-05-24 | Acist Medical Systems, Inc. | Contrast media injector syringe inlet valve system |
| CN103313753A (en) * | 2010-11-24 | 2013-09-18 | 阿西斯特医疗系统有限公司 | Contrast media injector syringe inlet valve system |
| JP2013545547A (en) * | 2010-11-24 | 2013-12-26 | アシスト・メディカル・システムズ，インコーポレイテッド | Contrast injection syringe inlet valve system |
| US10376687B2 (en) | 2012-10-16 | 2019-08-13 | Acist Medical Systems, Inc. | Controlling flow in a medical injection system |
| CN103990207A (en) * | 2014-05-13 | 2014-08-20 | 沈悦 | Connecting base structure for injection |
| CN104083818A (en) * | 2014-07-21 | 2014-10-08 | 李为松 | Intravenous injector and intravenous injector needle |
| CN105963828B (en) * | 2014-07-21 | 2019-01-01 | 李为松 | A kind of intravenous injector syringe needle |
| CN105963828A (en) * | 2014-07-21 | 2016-09-28 | 李为松 | Intravenous injector needle |
| CN106092705A (en) * | 2016-06-12 | 2016-11-09 | 上海裕隆生物科技有限公司 | A kind of self-closed type single current to dyeing pin group |
| US11560964B2 (en) | 2020-08-21 | 2023-01-24 | Acist Medical Systems, Inc. | Valve actuation device coupling |
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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 |