CN202620357U - Blood back flow-prevention device for transfusion tube - Google Patents
Blood back flow-prevention device for transfusion tube Download PDFInfo
- Publication number
- CN202620357U CN202620357U CN 201220214772 CN201220214772U CN202620357U CN 202620357 U CN202620357 U CN 202620357U CN 201220214772 CN201220214772 CN 201220214772 CN 201220214772 U CN201220214772 U CN 201220214772U CN 202620357 U CN202620357 U CN 202620357U
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- transfusion
- ball
- blood
- flow
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- Expired - Fee Related
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Abstract
The utility model relates to a blood back flow-prevention device for a transfusion tube. The blood back flow-prevention device is characterized in that: a section of transfusion tube inner wall close to a need head is provided with circular bumps, so that a flow chocking section is formed; four point bumps at opposite positions are formed, so that a through flow section is formed; a ball is arranged between the flow chocking section and the through flow section; and the ball can be prevented from passing through the section through the circular bumps and the point bumps. During transfusion, a liquid medicament flows along the transfusion tube, the ball is clamped on four point bumps on the through flow section under the impact of the liquid medicament, and a gap is reserved between the ball and a transfusion tube wall, so that flow of the liquid medicament is not influenced. After transfusion, blood flows backwards along the transfusion tube if completion of the transfusion is not found in time, the ball is clamped on the circular bumps on the through flow section under the impact of blood, and no gap is formed between the ball and the circular bumps, so that blood is blocked. The blood back flow-prevention device is skillful in design, is simple in structure, and is easy to process and produce; and the problem of blood back flow in a transfusion process can be solved effectively.
Description
Technical field
This utility model relates to resistant to blood counterflow unit on a kind of tube for transfusion, belongs to technical field of medical instruments.
Background technology
The resistant to blood counterflow unit all is not set on the present tube for transfusion, if can not be by timely discovery after the infusion process herb liquid is totally lost, patients'blood will blow back in the tube for transfusion, causes the patient blood loss.
Summary of the invention
The purpose of this utility model provides resistant to blood counterflow unit on a kind of tube for transfusion, can solve the backflow of blood problem in the infusion process.
Technical solution: comprise ball, choked flow cross section and passage section in this utility model; On one section tube for transfusion inwall near syringe needle; Annulus is set raises into the choked flow cross section, four relative some projections in position are set become passage section, place ball between choked flow cross section and the passage section.Annulus is protruding can to stop that with the some convexity ball passes through the cross section.
Medicinal liquid is along the tube for transfusion following current during transfusion, and ball is stuck on the passage section by the impact of medicinal liquid, owing to only be provided with four some convexities that the position is relative on the passage section, leaves the space between ball and transfusion tube wall, does not influence medicinal liquid and passes through.After medicinal liquid is totally lost; If not by timely discovery, blood will flow backwards along tube for transfusion, the ball impact that receives blood at this moment is stuck on the choked flow cross section; Because the choked flow cross section is provided with the annulus convexity; Tight between ball and the annulus convexity, blood are just stopped, have prevented that blood from further flowing backwards.
This utility model design is ingenious, simple in structure, is easy to processing, effectively the backflow of blood problem in the infusion process.
Description of drawings
Fig. 1 is the structural representation of this utility model.
Fig. 2 is the sketch map in choked flow cross section in this utility model.
Fig. 3 is the sketch map of passage section in this utility model.
The specific embodiment
Embodiment: as shown in fig. 1, between choked flow cross section 2 and passage section 3, place ball 1 in this utility model.
As shown in Figure 2, choked flow cross section 2 is for being provided with annulus protruding 4 on the tube for transfusion inwall.As shown in Figure 3, passage section 3 is for being provided with four some projections 5 that the position is relative on the tube for transfusion inwall.Annulus protruding 4 can stop that with point protruding 5 ball 1 passes through the cross section.
Medicinal liquid is along the tube for transfusion following current during transfusion, and ball is stuck on the passage section 3 by the impact of medicinal liquid, owing to only be provided with four some convexities 5 that the position is relative on the passage section 3, leaves the space between ball 1 and transfusion tube wall, does not influence medicinal liquid and passes through.After medicinal liquid is totally lost; If not by timely discovery, blood will flow backwards along tube for transfusion, ball 1 impact that receives blood at this moment is stuck on the choked flow cross section 2; Because choked flow cross section 2 is provided with annulus protruding 4; Tight between ball 1 and the annulus protruding 4, blood is just stopped, has prevented that blood from further flowing backwards.
Claims (1)
1. resistant to blood counterflow unit on the tube for transfusion; Comprise ball (1), choked flow cross section (2) and passage section (3); It is characterized in that: on one section tube for transfusion inwall near syringe needle; Annulus convexity (4) is set becomes choked flow cross section (2), four relative some projections (5) in position are set become passage section (3), place ball (1) between choked flow cross section (2) and the passage section (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220214772 CN202620357U (en) | 2012-05-14 | 2012-05-14 | Blood back flow-prevention device for transfusion tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220214772 CN202620357U (en) | 2012-05-14 | 2012-05-14 | Blood back flow-prevention device for transfusion tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202620357U true CN202620357U (en) | 2012-12-26 |
Family
ID=47373608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220214772 Expired - Fee Related CN202620357U (en) | 2012-05-14 | 2012-05-14 | Blood back flow-prevention device for transfusion tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202620357U (en) |
-
2012
- 2012-05-14 CN CN 201220214772 patent/CN202620357U/en not_active Expired - Fee Related
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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: 20121226 Termination date: 20130514 |