CN200948277Y - Needleless injectors - Google Patents
Needleless injectors Download PDFInfo
- Publication number
- CN200948277Y CN200948277Y CN 200620107250 CN200620107250U CN200948277Y CN 200948277 Y CN200948277 Y CN 200948277Y CN 200620107250 CN200620107250 CN 200620107250 CN 200620107250 U CN200620107250 U CN 200620107250U CN 200948277 Y CN200948277 Y CN 200948277Y
- Authority
- CN
- China
- Prior art keywords
- syringe
- needle cylinder
- piston
- core bar
- catch
- 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 discloses a needle-free injector, which comprises a needle cylinder (1), a core bar (2), and a piston (3). The piston (3) is fixed to the core bar (2) and arranged inside the needle cylinder (1), a stop piece (7) is arranged on the end face of the needle cylinder (1). A cambered bulge (9) is arranged on the stop piece (7). A spray hole (8) which is communicated with the lumen of the needle cylinder (1) is positioned at the center of the top piece (7) and the cambered bulge (9). An external thread (6) connected with a bottle cap is arranged at front end of the needle cylinder (1), while a fixing stopboard (5) and an external thread (4) connected with a fluid driving unit are arranged at the tail end of the needle cylinder (1). By adopting the aforesaid structure, the utility model is characterized in that the structure is rational, the operation is simple and convenient, the usage is safe and reliable, and the indolence injection can be fulfilled etc.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, particularly a kind of needleless injector that is used with the liquid pusher.
Background technology
In order in epidemic prevention and therapeutic process, to prevent to cause cross infection, subcutaneous injection generally adopts disposable syringe at present, but when using, disposable syringe needs to operate by the professional, the ordinary person is difficult to grasp the degree of depth that entry needle inserts patient skin, and bring pin to wear the pain of skin to patient, especially the long-term needs patient who treats diabetes that has an injection is especially felt bad, not only need every day to run toward medical institutions several times, but also will be subjected to the misery of skin and flesh; For this reason, people have developed Needleless injection device, Needleless injection device is made up of needleless injector and liquid pusher, this device need not professional's operation, and simple to operate, easy to use, speed is fast, no pain, can prevent cross infection again, therefore suitable diabetics and extensive immunization inocultation; But the problem of needleless injector existence at present is the syndeton complexity, and the absorption medicinal liquid is installed on the liquid pusher again from medicine bottle installation, operating process are loaded down with trivial details.For this reason, many manufacturers and knowledgeable people have carried out improvement and research repeatedly, design many different schemes, but do not have ideal method to solve the problems referred to above so far as yet.
Summary of the invention
For overcoming the disadvantage of above-mentioned existence, problem to be solved in the utility model provide a kind of simple and reasonable, swift and convenient to operate, safe and reliable, inject analgic needleless injector.
The technical scheme that its technical problem that solves this utility model adopts, it comprises syringe, core bar, piston, piston is fixed on the core bar and is arranged in the syringe, the end face of described syringe is provided with catch, catch is provided with the cambered surface projection, and the center of catch and cambered surface projection is provided with the spray-hole that communicates with the syringe inner chamber.
Be convenient to reliably be connected with the bottle graft head when drawing medicine, the front end of described syringe is provided with the external screw thread that is connected with the bottle graft head.
Syringe is connected reliably in order to inject with the liquid pusher, the tail end of described syringe is provided with positioning baffle and the external screw thread that is connected with the liquid pusher.
After adopting said structure, syringe is connected and fixed by the external screw thread and the bottle graft head of front end, the cambered surface projection contacts sealing with the ring packing mouth of bottle graft head, thereby make convenient, fast being drawn in the syringe of medicinal liquid in the medicine bottle, the cambered surface projection contacts comfortable, the safe effect of playing in when injection with patient skin; The positioning baffle of back end of syringe and external screw thread can reach accurately and rapidly and reliably be connected with the liquid pusher, and Needleless injection can be fulfiled assignment under layman's operation; Have characteristics such as rational in infrastructure, simple to operation, safe and reliable.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Shown in Figure 1, specific embodiments for a kind of needleless injector of this utility model, it comprises syringe 1, core bar 2, piston 3, piston 3 is fixed on the core bar 2 and is arranged in the syringe 1, the end face of described syringe 1 is provided with catch 7, and catch 7 is provided with cambered surface projection 9, and the center of catch 7 and cambered surface projection 9 is provided with the spray-hole 8 that communicates with syringe 1 inner chamber, cambered surface projection 9 plays sealing function when drawing medicine, when injection, play contact with patient skin comfortable.The front end of described syringe 1 is provided with the external screw thread 6 that is connected with the bottle graft head.The tail end of described syringe 1 is provided with positioning baffle 5 and the external screw thread 4 that is connected with the liquid pusher.
Claims (3)
1, a kind of needleless injector, comprise syringe (1), core bar (2), piston (3), piston (3) is fixed on core bar (2) and goes up and be arranged in the syringe (1), it is characterized in that: the end face of described syringe (1) is provided with catch (7), catch (7) is provided with cambered surface projection (9), and the center of catch (7) and cambered surface projection (9) is provided with the spray-hole (8) that communicates with syringe (1) inner chamber.
2, needleless injector according to claim 1 is characterized in that: the front end of described syringe (1) is provided with the external screw thread (6) that is connected with the bottle graft head.
3, needleless injector according to claim 1 and 2 is characterized in that: the tail end of described syringe (1) is provided with positioning baffle (5) and the external screw thread (4) that is connected with the liquid pusher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620107250 CN200948277Y (en) | 2006-08-26 | 2006-08-26 | Needleless injectors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620107250 CN200948277Y (en) | 2006-08-26 | 2006-08-26 | Needleless injectors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200948277Y true CN200948277Y (en) | 2007-09-19 |
Family
ID=38890814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620107250 Expired - Fee Related CN200948277Y (en) | 2006-08-26 | 2006-08-26 | Needleless injectors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200948277Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104786123A (en) * | 2015-03-31 | 2015-07-22 | 成都来宝石油设备有限公司 | High-strength petroleum drilling rod derusting machine |
-
2006
- 2006-08-26 CN CN 200620107250 patent/CN200948277Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104786123A (en) * | 2015-03-31 | 2015-07-22 | 成都来宝石油设备有限公司 | High-strength petroleum drilling rod derusting machine |
| CN104786123B (en) * | 2015-03-31 | 2017-05-24 | 孙云涛 | High-strength petroleum drilling rod derusting machine |
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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: 20070919 Termination date: 20090928 |