CN201453303U - Spiral self-locking syringe - Google Patents
Spiral self-locking syringe Download PDFInfo
- Publication number
- CN201453303U CN201453303U CN2009200925098U CN200920092509U CN201453303U CN 201453303 U CN201453303 U CN 201453303U CN 2009200925098 U CN2009200925098 U CN 2009200925098U CN 200920092509 U CN200920092509 U CN 200920092509U CN 201453303 U CN201453303 U CN 201453303U
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- CN
- China
- Prior art keywords
- piston rod
- syringe
- pin
- piston
- self
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- Expired - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a spiral self-locking syringe which is characterized by comprising a syringe tube, a piston, a piston rod, a pin and the like, wherein the edge of the upper part of the syringe tube is provided with a small hole; the pin is inserted into the small hole; the piston rod is inserted into the syringe tube; the piston is clamped on the front end of the piston rod; the middle cylindrical surface of the piston rod is provided with thread; when the pin is pulled out, the syringe is used as a common syringe; when the outer end of the pin is pressed so that the other end is inserted into a threaded groove on the surface of the piston rod, and the piston rod is locked and cannot move in the axial direction, but the piston rod can move in the axial direction by being rotated to suck, and is self-locked when the rotation is stopped. The spiral self-locking syringe has the advantages that the suction volume can be precisely controlled and the self-locking can be kept at any time. When the substance in the syringe tube is discharged, not only the pin can be inserted in and the piston rod is rotated to move downwards, but also the pin can be pulled out and the piston rod is pressed to rapidly push downwards.
Description
(1) technical field
This utility model relates to a kind of injector for medical purpose, and specifically, it relates to a kind of spiral self-locking injector that can prevent the syringe piston rod resorption.
(2) background technology
In hospital, work such as because the needs of diagnosis, treatment disease, medical personnel often will draw blood, tap the abdomen, take out hydrothorax for the patient, take out pericardial effusion and puncture suction cyst, abscess, spinal cord.The suction operation here all relies on syringe to finish.
The operation principle of syringe pump is to utilize pull syringe internal piston bar, produces negative pressure at syringe tube front end cavity, makes in liquid or the gas inhalation syringe pipe.
When using the ordinary syringe suction, operator's palpus one hand-held syringe tube, the another hands pulls back piston rod, when syringe tube front end intracavity forms negative pressure, aspirate is gradually during the inhalation syringe pipe, piston rod also has sucked back trend, and not sucked back for guaranteeing piston rod, the operator must pull at piston rod always.When continuous a large amount of pumping liquid (as ascites, hydrothorax), because workload is big, it is stiff very easily to cause the operator to point, and makes work be forced to stop, and treats could aspirate after the stiff alleviation of hand, not only time-consuming but also effort again.In the puncture cytolgical examination, behind inserting needle, need sometimes to aspirate while rotating syringe tube, sometimes also need syringe tube (is required whenever to rotate a circle in the puncture cytolgical examination while rotating inserting needle to seek best suction orientation, 1～2 millimeter of inserting needle), promptly want this moment the interior negative pressure of holding chamber relatively stable, the inserting needle amount that keeps rotation unit angle again, this operation easier is big, and the abecedarian is difficult for grasping, and often causes operation failure.Even if skilled operator sometimes also can be long because of suction time, cause the self-dissolving in tube chamber of aspiration of tissue thing, result of laboratory test is inaccurate.In addition, how much grasping by operator's both hands dynamics of its suction volume of ordinary syringe also is difficult for accurately control (is 0.05 milliliter as suction spinal cord mistake standard deviation).
(3) summary of the invention
The purpose of this utility model is exactly to be to provide a kind of syringe tube front end intracavity that still can keep in short-term when the strength of operator's pull syringe stops clinically being the syringe of negative pressure state.
For achieving the above object, the technical solution adopted in the utility model is: a kind of spiral self-locking injector, form by syringe tube, piston, piston rod, pin etc.Wherein the top edge of syringe tube has an aperture, plug-in mounting one pin in the aperture; Piston rod is inserted in the syringe tube; Piston is installed on the piston rod front end, is shaped on screw thread on the periphery of piston rod middle part; When pin was pulled out, this syringe is the same with ordinary syringe to be used; When pushing the pin outer end when making its other end insert in the thread groove of piston rod surface, making that piston rod is locked can not axial float, but this moment, the rotary-piston bar can make piston rod produce to move axially to carry out suction operation, piston rod self-locking when rotation stops.Wherein syringe tube, pin, piston rod are made by polypropylene material, and piston is made by rubber.
Of the present utility modelly have a mind to effect and be: the rotary-piston bar aspirates and aspirates laborsavingly than pull piston rod, and suction volume can accurately control, and can keep self-locking at any time again.In the time the material in the syringe tube need being discharged, both can insert pin, the rotary-piston bar slowly moves down, and also can extract pin and push piston rod promotion downwards fast.
When using this utility model to carry out suction operation, needn't both hands be exerted oneself always in order to overcome the negative pressure resorption, but press the mode that the rotary-piston bar aspirates behind the pin under pin lock fixed piston bar or the peace after can arbitrarily adopting the pull piston rod to form negative pressure according to individual human needs. after the piston rod locking, negative pressure still exists in short time, operator temporarily both hands loosen, have a rest, this makes suction operation become light; Can form back lock piston bar in negative pressure in addition in the puncture cytolgical examination and be rotated and inserting needle again, this makes this work become simple.
(4) description of drawings
Accompanying drawing 1 is an overall structure sketch map of the present utility model.
Accompanying drawing 2 is syringe tube sketch maps of the present utility model.
In the accompanying drawing, 1. syringe tube, 2. piston rod, 3. pin, 4. aperture, 5. piston.
(5) specific embodiment
In the drawings, piston (5) is installed on the front end of piston rod (2), and piston rod (2) is inserted in the syringe tube (1), and pin (3) is inserted in the aperture (4) of syringe tube (1) top edge.When pushing pin (3) outer end when making its other end insert in the thread groove on piston rod (2) surface, making that piston rod (2) is locked can not axial float, moves axially also self-locking but rotary-piston bar this moment (2) can make piston rod (2) produce.
Claims (3)
1. spiral self-locking injector, it is characterized in that: this syringe is made up of syringe tube, piston, piston rod, pin etc., pin is inserted in the aperture of syringe tube upper edge, and piston is installed on the front end of piston rod, and piston rod is inserted in the syringe tube.
2. spiral self-locking injector according to claim 1 is characterized in that: be shaped on screw thread on the periphery of piston rod middle part.
3. spiral self-locking injector according to claim 1 is characterized in that: the syringe tube upper edge is shaped on an aperture that is used to adorn pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200925098U CN201453303U (en) | 2009-08-20 | 2009-08-20 | Spiral self-locking syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200925098U CN201453303U (en) | 2009-08-20 | 2009-08-20 | Spiral self-locking syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201453303U true CN201453303U (en) | 2010-05-12 |
Family
ID=42380644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200925098U Expired - Fee Related CN201453303U (en) | 2009-08-20 | 2009-08-20 | Spiral self-locking syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201453303U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294913A (en) * | 2011-06-22 | 2011-12-28 | 邹乐华 | Pen capable of automatically absorbing ink |
| CN102676377A (en) * | 2012-03-12 | 2012-09-19 | 中国人民解放军兰州军区乌鲁木齐总医院 | Novel external embryo (ovum) collector |
| CN103156649A (en) * | 2013-03-07 | 2013-06-19 | 华北石油管理局总医院 | Medical disposable excrement taking device |
| CN105219631A (en) * | 2015-10-28 | 2016-01-06 | 汤占宇 | A kind of cell harvesting pin |
| CN105561446A (en) * | 2016-01-11 | 2016-05-11 | 东莞市立中新材料科技有限公司 | Liquid injector |
| CN105833386A (en) * | 2016-05-17 | 2016-08-10 | 姚鹤鹏 | Non-gravity transfusion device capable of controlling dosage automatically |
| CN109622088A (en) * | 2015-02-01 | 2019-04-16 | 合肥智慧龙图腾知识产权股份有限公司 | A kind of Multicarity can accurately deploy the laboratory apparatus of chemical reagent |
| CN110353854A (en) * | 2019-07-25 | 2019-10-22 | 江苏省人民医院（南京医科大学第一附属医院） | Animal cavity viscera puncture outfit operated by single person |
-
2009
- 2009-08-20 CN CN2009200925098U patent/CN201453303U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294913A (en) * | 2011-06-22 | 2011-12-28 | 邹乐华 | Pen capable of automatically absorbing ink |
| CN102676377A (en) * | 2012-03-12 | 2012-09-19 | 中国人民解放军兰州军区乌鲁木齐总医院 | Novel external embryo (ovum) collector |
| CN103156649A (en) * | 2013-03-07 | 2013-06-19 | 华北石油管理局总医院 | Medical disposable excrement taking device |
| CN109622088A (en) * | 2015-02-01 | 2019-04-16 | 合肥智慧龙图腾知识产权股份有限公司 | A kind of Multicarity can accurately deploy the laboratory apparatus of chemical reagent |
| CN105219631A (en) * | 2015-10-28 | 2016-01-06 | 汤占宇 | A kind of cell harvesting pin |
| CN105561446A (en) * | 2016-01-11 | 2016-05-11 | 东莞市立中新材料科技有限公司 | Liquid injector |
| CN105833386A (en) * | 2016-05-17 | 2016-08-10 | 姚鹤鹏 | Non-gravity transfusion device capable of controlling dosage automatically |
| CN110353854A (en) * | 2019-07-25 | 2019-10-22 | 江苏省人民医院（南京医科大学第一附属医院） | Animal cavity viscera puncture outfit operated by single person |
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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: 20100512 Termination date: 20100820 |