CN205055043U - Prevent back blood preliminary filling formula pipe flusher - Google Patents
Prevent back blood preliminary filling formula pipe flusher Download PDFInfo
- Publication number
- CN205055043U CN205055043U CN201520676760.4U CN201520676760U CN205055043U CN 205055043 U CN205055043 U CN 205055043U CN 201520676760 U CN201520676760 U CN 201520676760U CN 205055043 U CN205055043 U CN 205055043U
- Authority
- CN
- China
- Prior art keywords
- piston
- core bar
- cylindrical shell
- helmet
- return prevention
- 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.)
- Active
Links
Landscapes
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The utility model belongs to the field of medical equipment, concretely relates to prevent back blood preliminary filling formula pipe flusher, including barrel, core bar and install the piston on the core bar top, the front end of barrel has the joint, and the rear end has the turn -up, and the top conical surface of piston cooperatees with the front end inner wall conical surface of barrel, wherein, is equipped with spacing boss on the core bar, and when the front end inner wall conical contact of the top of the piston conical surface and barrel, spacing boss contacts with the turn -up. Prevent back blood preliminary filling formula pipe flusher, through set up spacing boss on the core bar, avoided warp producing the negative pressure because of the piston to prevent the blood backflow, realize the malleation tube sealing.
Description
Technical field
This utility model relates to the pre-filled catheter flusher of a kind of blood return prevention, belongs to medical instruments field.
Background technology
Transfusion nursing is the important and conventional nursing procedure of in clinical care.The continuous application of venous detaining needle and central venous catheter in recent years, after transfusion terminates, need use the normal saline of 0.9% to carry out washing pipe, the left drug of conduit cavity be poured the vein of human body, and carry out positive pressure tube sealing.But the piston of catheter flusher conventional is in the market butyl rubber, material is softer, there is certain elasticity, when the end shifted onto by core bar, cylindrical shell causes excessive compression to piston, after unclamping core bar, piston can be held to resilience under the effect of natural resiliency power, cause instantaneous negative pressure to produce, cause the blood in vein to enter in conduit or catheter block, and then cause blood backflow cannot positive pressure tube sealing.
Utility model content
According to above deficiency of the prior art, the technical problems to be solved in the utility model is: provide a kind of and can not cause the pre-filled catheter flusher of the blood return prevention of blood backflow because of the resilience of piston.
The pre-filled catheter flusher of blood return prevention described in the utility model, comprise cylindrical shell, core bar and be arranged on the piston on core bar top, the front end of cylindrical shell has joint, rear end has crimping, the top conical surface of piston matches with the front inner wall conical surface of cylindrical shell, and wherein, core bar is provided with positive stop lug boss, when the front inner wall taper-face contact of the top conical surface of piston and cylindrical shell, positive stop lug boss contacts with crimping.
The front end frustoconical bevel angle of described piston mates with the front inner wall frustoconical bevel angle of cylindrical shell.
The side surface of described piston is provided with two grooves, increases the sealing effectiveness of piston and cylindrical shell.
Top and the piston of described core bar are threaded connection, and are not only convenient to dismounting, and connect more firm.
The cross section of described positive stop lug boss is circular, is convenient to positive stop lug boss and contacts completely with crimping.
Corresponding joints is provided with helmet, and described joint is outer cone female adapter, and helmet is female cone external screw thread helmet, and the outer cone of joint matches with the female cone of helmet, and joint and helmet are threaded connection.
Operation principle and process:
Before using, by 0.9% normal saline inoculated in the seal cavity of joint, cylindrical shell, piston composition.During use, first female cone external screw thread helmet is taken off, get rid of the air in cylindrical shell, then the inlying catheter of outer cone female adapter with venous detaining needle and central venous catheter is connected, crimping is propped up with forefinger and middle finger, the pushing hands of thumb press core bar, 0.9% normal saline in cylindrical shell is made to inject in inlying catheter, when piston is pulled to the front inner wall taper-face contact just with cylindrical shell, positive stop lug boss just contacts with crimping, thus limited piston continues to advance, avoid the elastic deformation of piston, and then avoid the negative pressure caused because of Piston rebound to produce, reach the object of anti-return blood.
The beneficial effect that this utility model is compared with prior art had is:
The pre-filled catheter flusher of blood return prevention described in the utility model, by arranging positive stop lug boss on core bar, avoiding and producing negative pressure because of piston distortion, thus preventing blood backflow, realizing positive pressure tube sealing.
Accompanying drawing explanation
Fig. 1 is this with novel structural representation;
Fig. 2 is Fig. 1 fundamental diagram.
In figure: 1, helmet; 2, joint; 3, cylindrical shell; 4,0.9% normal saline; 5, piston; 6, core bar; 7, crimping; 8, positive stop lug boss; 9, pushing hands; 10, inlying catheter.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
As shown in Figure 1 and Figure 2, the pre-filled catheter flusher of blood return prevention described in the utility model, comprise cylindrical shell 3, core bar 6 and be arranged on the piston 5 on core bar 6 top, the front end of cylindrical shell 3 has joint 2, and rear end has crimping 7, and the top conical surface of piston 5 matches with the front inner wall conical surface of cylindrical shell 3, wherein, core bar 6 is provided with positive stop lug boss 8, and when the front inner wall taper-face contact of the top conical surface of piston 5 and cylindrical shell 3, positive stop lug boss 8 contacts with crimping 7.
In the present embodiment: the front end frustoconical bevel angle of piston 5 mates with the front inner wall frustoconical bevel angle of cylindrical shell 3; The side surface of piston 5 is provided with two grooves, increases the sealing effectiveness of piston 5 and cylindrical shell 3; Top and the piston 5 of core bar 6 are threaded connection, and are not only convenient to dismounting, and connect more firm; The cross section of positive stop lug boss 8 is circular, is convenient to positive stop lug boss 8 and contacts completely with crimping 7; Corresponding joints 2 is provided with helmet 1, and joint 2 is outer cone female adapter, and helmet 1 is female cone external screw thread helmet, and the outer cone of joint 2 matches with the female cone of helmet 1, and joint 2 and helmet 1 are threaded connection.
Before using, by 0.9% normal saline 4 inoculated in the seal cavity that joint 2, cylindrical shell 3, piston 5 form.During use, first female cone external screw thread helmet is taken off, get rid of the air in cylindrical shell 3, then the inlying catheter 10 of outer cone female adapter with venous detaining needle and central venous catheter is connected, crimping 7 is propped up with forefinger and middle finger, the pushing hands 9 of thumb press core bar 6, 0.9% normal saline 4 in cylindrical shell 3 is made to inject in inlying catheter, when piston 5 is pulled to the front inner wall taper-face contact just with cylindrical shell 3, positive stop lug boss 8 just contacts with crimping 7, thus limited piston 5 continues to advance, avoid the elastic deformation of piston 5, and then avoid the negative pressure caused because of piston 5 resilience to produce, reach the object of anti-return blood.
The pre-filled catheter flusher of blood return prevention described in the utility model, by arranging positive stop lug boss 8 on core bar 6, avoiding because piston 5 is out of shape and producing negative pressure, thus preventing blood backflow, realizing positive pressure tube sealing.
Claims (7)
1. the pre-filled catheter flusher of blood return prevention, comprise cylindrical shell (3), core bar (6) and be arranged on the piston (5) on core bar (6) top, the front end of cylindrical shell (3) has joint (2), rear end has crimping (7), the top conical surface of piston (5) matches with the front inner wall conical surface of cylindrical shell (3), it is characterized in that: core bar (6) is provided with positive stop lug boss (8), when the front inner wall taper-face contact of the top conical surface of piston (5) and cylindrical shell (3), positive stop lug boss (8) contacts with crimping (7).
2. the pre-filled catheter flusher of blood return prevention according to claim 1, is characterized in that: the front end frustoconical bevel angle of described piston (5) mates with the front inner wall frustoconical bevel angle of cylindrical shell (3).
3. the pre-filled catheter flusher of blood return prevention according to claim 1 and 2, is characterized in that: the side surface of described piston (5) is provided with two grooves.
4. the pre-filled catheter flusher of blood return prevention according to claim 1 and 2, is characterized in that: top and the piston (5) of described core bar (6) are threaded connection.
5. the pre-filled catheter flusher of blood return prevention according to claim 1 and 2, is characterized in that: the cross section of described positive stop lug boss (8) is for circular.
6. the pre-filled catheter flusher of blood return prevention according to claim 1 and 2, is characterized in that: corresponding joints (2) is provided with helmet (1).
7. the pre-filled catheter flusher of blood return prevention according to claim 6, it is characterized in that: described joint (2) is outer cone female adapter, helmet (1) is female cone external screw thread helmet, the outer cone of joint (2) matches with the female cone of helmet (1), and joint (2) and helmet (1) are threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520676760.4U CN205055043U (en) | 2015-09-02 | 2015-09-02 | Prevent back blood preliminary filling formula pipe flusher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520676760.4U CN205055043U (en) | 2015-09-02 | 2015-09-02 | Prevent back blood preliminary filling formula pipe flusher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205055043U true CN205055043U (en) | 2016-03-02 |
Family
ID=55381654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520676760.4U Active CN205055043U (en) | 2015-09-02 | 2015-09-02 | Prevent back blood preliminary filling formula pipe flusher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205055043U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108837236A (en) * | 2018-05-10 | 2018-11-20 | 山东威高集团医用高分子制品股份有限公司 | The pre-filled flushing syringe of anti-blood back |
| CN112354025A (en) * | 2020-11-14 | 2021-02-12 | 西安交通大学 | Disposable positive and negative pressure syringe |
| CN114632222A (en) * | 2022-03-11 | 2022-06-17 | 李开雄 | Injector with bidirectional scales and setting method thereof |
-
2015
- 2015-09-02 CN CN201520676760.4U patent/CN205055043U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108837236A (en) * | 2018-05-10 | 2018-11-20 | 山东威高集团医用高分子制品股份有限公司 | The pre-filled flushing syringe of anti-blood back |
| CN112354025A (en) * | 2020-11-14 | 2021-02-12 | 西安交通大学 | Disposable positive and negative pressure syringe |
| CN114632222A (en) * | 2022-03-11 | 2022-06-17 | 李开雄 | Injector with bidirectional scales and setting method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205055043U (en) | Prevent back blood preliminary filling formula pipe flusher | |
| CN205515814U (en) | Double -barrelled binary channels syringe and syringe needle | |
| CN204181950U (en) | A kind of Needleless seal formula infusion connector | |
| CN202446073U (en) | Double-end C-shaped fixator | |
| CN205163740U (en) | Two -chamber sputum aspirator | |
| CN205073415U (en) | Injector | |
| CN201492738U (en) | Transfusion device with flexible pressure-resisting tube | |
| CN108236759B (en) | Medical transfusion forward flow joint device | |
| CN205924696U (en) | Ureter is with sealed head of protection | |
| CN205031681U (en) | Anti -drop nose oxygen pipe | |
| CN206414563U (en) | A kind of safety needle | |
| CN206045089U (en) | A kind of resistance bacterium positive pressure remaining needle device | |
| CN204708864U (en) | A kind of instrument backflow preventing structure and comprise its blood taking needle of taking a blood sample | |
| CN204798630U (en) | Disposable composite connection pipe | |
| CN211485676U (en) | Cupping jar applied to acupoint treatment | |
| CN215426885U (en) | Obstetrical medicine applicator | |
| CN205073414U (en) | Keep somewhere needle after improvement | |
| CN206492063U (en) | Positive pressure needle-free connector and remaining needle | |
| CN202078602U (en) | Umbilical vein puncture indwelling needle | |
| CN207627721U (en) | A kind of drainage tube | |
| CN209033360U (en) | A kind of transfusion needle preventing blood backflow | |
| CN207237881U (en) | A kind of lower resistance medicine dissolving device core bar | |
| CN207085023U (en) | A kind of medical remaining needle | |
| CN204699197U (en) | A kind of Dual-channel tracheal cannula with spray conduit | |
| CN203458647U (en) | Novel infusion apparatus joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 255000 No. 999, Zunxian Road, high tech Zone, Zibo City, Shandong Province Patentee after: Shandong ande medical supplies Co.,Ltd. Address before: No.77, North Road, development zone, high tech Zone, Zibo City, Shandong Province Patentee before: SHINVA ANDE HEALTHCARE APPARATUS Co.,Ltd. |