CN203227095U - Blood returning prevention type pre-filling type washpipe injector - Google Patents
Blood returning prevention type pre-filling type washpipe injector Download PDFInfo
- Publication number
- CN203227095U CN203227095U CN 201320163132 CN201320163132U CN203227095U CN 203227095 U CN203227095 U CN 203227095U CN 201320163132 CN201320163132 CN 201320163132 CN 201320163132 U CN201320163132 U CN 201320163132U CN 203227095 U CN203227095 U CN 203227095U
- Authority
- CN
- China
- Prior art keywords
- piston
- sleeve
- top land
- push rod
- prevention type
- 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 - Lifetime
Links
- 239000008280 blood Substances 0.000 title claims abstract description 18
- 210000004369 blood Anatomy 0.000 title claims abstract description 18
- 230000002265 prevention Effects 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 241001149930 Protura <class> Species 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 4
- 230000023555 blood coagulation Effects 0.000 description 3
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 229960002897 heparin Drugs 0.000 description 1
- 229920000669 heparin Polymers 0.000 description 1
- 235000021110 pickles Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
Images
Abstract
The utility model discloses a blood returning prevention type pre-filling type washpipe injector which comprises a sleeve, a push rod and a piston. A conical head connected with a guiding pipe is arranged at the far end of the sleeve, a hollow passage for enabling liquid to flow out is arranged in the conical head, sleeve conical sections are formed on two sides of the hollow passage on the upper portion of the sleeve, the piston is connected with the push rod and sleeved in the sleeve, the piston and the inner wall of the sleeve form a cavity for filling liquid, the top of the piston is of a conical structure, the top of the piston can seal the hollow passage, and the angle of the contact portion of the top of the piston and the sleeve conical sections ranges from 0 degree to 5 degrees. The blood returning prevention type pre-filling type washpipe injector can effectively prevent blood returning and enhances using safety.
Description
Technical field
The present invention relates to a kind of syringe, relate in particular to a kind of when irrigating catheter the pre-filled washing pipe syringe of employed blood return prevention type.
Background technology
Venous duct is a kind of therapy equipment commonly used, arranging of venous duct can conveniently be treated, for example can medicine be input in the human body by venous duct, and these conduits need wash in order to keep catheter patency and complete, the fluid of irrigating catheter is housed in the pre-filled washing pipe syringe, as pump pickle solution, heparin etc.
Use at present in advance towards formula washing pipe syringe when rinsing step finishes, the push rod pushing piston, top land is during to the extruding of the conehead of sleeve, and top land and outer casing inner wall are fitted or most of the applying fully, and the suffered power of piston makes top land be out of shape the hollow channel that gos deep into conehead.When removing external force, when the piston head distortion recovers, the liquid in the locking conehead can be drawn back, and produce blood back, cause blood clot to produce, blood meeting grumeleuse and seal conduit in conduit namely has blood clotting and is present in the conduit like this.Because conduit is imbedded in the body, also is difficult to observe grumeleuse, blood clotting directly may be punched in the body when washing next time, and the patient is produced harm.
Summary of the invention
The objective of the invention is to overcome above-mentioned shortcoming, and the pre-filled washing pipe syringe of a kind of blood return prevention type that provides is used for flushing, sealing venous duct.
The present invention is achieved in that the pre-filled washing pipe syringe of a kind of blood return prevention type, comprise sleeve, push rod, piston, described sleeve far-end has the conehead of connecting duct, the hollow channel that conehead has liquid to flow out, and upper cartridge forms sleeve awl section in hollow channel mouth both sides; Piston is connected with push rod, is sleeved in the sleeve; Piston and sleeve lining form the chamber of filling liquid; Described top land is tapered structure, the salable hollow channel of top land, and the angle of top land and sleeve awl section contact site is 0-5 °.
A piston retraction chamber is arranged between described top land and push rod, and top land is thin-wall construction.
The invention has the beneficial effects as follows, the angle of top land and sleeve awl section contact site is 0-5 °, in this angular range, top land is when the sealed hollow passage, and top land contacts for point type with sleeve awl section, when thrust is excessive, sleeve awl section contact point applies opposition to top land, and it is too much to prevent that top land from entering hollow channel, thereby has avoided when removing external force, when piston head distortion recovers, liquid pumpback and cause that the situation of blood back takes place.Top land is designed to thin-wall construction, can further be out of shape to stop top land to enter hollow channel by top land, avoids blood back.
Description of drawings
Fig. 1 is front view of the present invention;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is piston full sectional view of the present invention;
Each label declaration is as follows among the figure:
1, sleeve, 2, push rod, 3, piston, 4, conehead, 5, hollow channel, 6, sleeve awl section, 7, top land, 8, the piston retraction chamber, 9, piston thread, 10, the push rod screw thread, 11, the locking block.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further details.
The pre-filled washing pipe syringe of a kind of blood return prevention type comprises sleeve 1, push rod 2, piston 3, and described sleeve 1 far-end has the conehead 4 of connecting duct, the hollow channel 5 that conehead 4 has liquid to flow out, and sleeve awl section 6 is formed in 5 mouthfuls of both sides of hollow channel at sleeve 1 top; Piston 3 is connected with push rod 2, is sleeved in the sleeve 1; Piston 3 and sleeve 1 inwall form the chamber of filling liquid; Described top land 7 is tapered structure, top land 7 salable hollow channels 5, and top land 7 is 0-5 ° with the angle of sleeve awl section 6 contact sites.2 of described top land 7 and push rods have a piston retraction chamber 8, and top land 3 is thin-wall construction.Be processed with piston thread 9 in the inboard of piston base, piston 3 is by piston thread 9 and 10 fastening the linking together of push rod screw thread.
The angle (shown in angle a among Fig. 2) of top land 7 and sleeve awl section 6 contact portions is between 0 ~ 5 degree.This has guaranteed top land 7 is being shifted onto sleeve 1 foremost the time, and both fit fully.Therefore can not produce blood back, avoid producing the risk of blood clotting.
In sum, the present invention requires the angle of top land 7 and sleeve awl section 6 contact portions between 0 ~ 5 degree, can prevent effectively that the blood back phenomenon from taking place.
Claims (3)
1. the pre-filled washing pipe syringe of blood return prevention type comprises sleeve, push rod, piston, and described sleeve far-end has the conehead of connecting duct, the hollow channel that has liquid to flow out in the conehead, and upper cartridge forms sleeve awl section in hollow channel mouth both sides; Piston is connected with push rod, is sleeved in the sleeve; Piston and sleeve lining form the chamber of filling liquid; Described top land is tapered structure, the salable hollow channel of top land, and the angle of top land and sleeve awl section contact site is 0-5 °.
2. the pre-filled washing pipe syringe of blood return prevention type according to claim 1 is characterized in that, a piston retraction chamber is arranged between described top land and push rod, and top land is thin-wall construction.
3. the pre-filled washing pipe syringe of blood return prevention type according to claim 1 is characterized in that, is processed with piston thread in the inboard of piston base, and piston links together by piston thread and push rod screw threads for fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320163132 CN203227095U (en) | 2013-04-03 | 2013-04-03 | Blood returning prevention type pre-filling type washpipe injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320163132 CN203227095U (en) | 2013-04-03 | 2013-04-03 | Blood returning prevention type pre-filling type washpipe injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203227095U true CN203227095U (en) | 2013-10-09 |
Family
ID=49283246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320163132 Expired - Lifetime CN203227095U (en) | 2013-04-03 | 2013-04-03 | Blood returning prevention type pre-filling type washpipe injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203227095U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170035A (en) * | 2013-04-03 | 2013-06-26 | 山东威高集团医用高分子制品股份有限公司 | Blood-return-preventing pre-filling pipe-washing syringe |
| CN104784803A (en) * | 2015-04-23 | 2015-07-22 | 山东威高集团医用高分子制品股份有限公司 | Pre-charging type tube washing injector |
-
2013
- 2013-04-03 CN CN 201320163132 patent/CN203227095U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170035A (en) * | 2013-04-03 | 2013-06-26 | 山东威高集团医用高分子制品股份有限公司 | Blood-return-preventing pre-filling pipe-washing syringe |
| CN103170035B (en) * | 2013-04-03 | 2014-07-09 | 山东威高集团医用高分子制品股份有限公司 | Blood-return-preventing pre-filling pipe-washing syringe |
| CN104784803A (en) * | 2015-04-23 | 2015-07-22 | 山东威高集团医用高分子制品股份有限公司 | Pre-charging type tube washing injector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131009 Effective date of abandoning: 20140709 |
|
| RGAV | Abandon patent right to avoid regrant |