CN203677664U - Disposable helical needle cap injector - Google Patents
Disposable helical needle cap injector Download PDFInfo
- Publication number
- CN203677664U CN203677664U CN201320734159.7U CN201320734159U CN203677664U CN 203677664 U CN203677664 U CN 203677664U CN 201320734159 U CN201320734159 U CN 201320734159U CN 203677664 U CN203677664 U CN 203677664U
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- CN
- China
- Prior art keywords
- thread
- cap
- pintle
- pin
- syringe
- 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 disposable helical needle cap injector. A needle bolt thread is formed on the outer wall of a needle bolt; a needle cap thread is formed on the inner wall of the open end of a needle cap; the needle cap is in threaded connection with the needle bolt. According to the mechanical benefit of no friction on the threads, simple harmonic motion, the Hooke's law and the least action principle, the rigid connection between the needle cap and the needle bolt is changed into helical connection, and the main force applying point of medical staff is changed by changing the opening way of the injector, so that the safety of the injector is enhanced, force is saved, and the probability of injuries by a needle due to poor control of force of medical staff during pulling of the needle is lowered. The disposable helical needle cap injector has the advantages of simple structure, convenience in use and high safety coefficient.
Description
Technical field
This utility model relates to a kind of syringe, relates in particular to a kind of disposable screw type pin cap syringe.
Background technology
Injury from sharp utensil is the modal occupational exposure forms of medical personnel, investigation is found, medical personnel's injury from sharp utensil incidence rate in medical care activity is 70.77%, doctor, sharp instrument injury of nurses incidence rate are respectively 61.54%, 77.34%, and the incidence rate of pricking wound, glass wound, knife injury and other injuries from sharp utensil is respectively 55.41%, 30.95%, 7.36%, 6.28%.Can find out, the injury from sharp utensil being caused by syringe is modal occupational exposure form.Recent statistics demonstration, the whole world just has 1 medical worker for every 30 seconds by pricking wound, has every year nearly 1,000,000 pricking wounds to occur.
In the protection field of pricking wound developed country because taking various safeguard procedures, make the incidence rate of pricking wound on a declining curve, and China starts late because of occupational protective education, in the stern challenge more of pricking wound protection field face, pricking wound incidence rate is still quite high, over nearly 10 years, many data show still more than 80%, and undiminished trend.
Pricking wound mainly occurs in and takes off entry needle, and entry needle after using is recovered entry needle and will be sent when disposal with the entry needle of crossing, and proportion is respectively 43.8%, 42.7%, 42.4%.It should be noted that in numerous factors that cause pricking wound, by taking off, the occurrence frequency of stabbing due to entry needle is high.The present situation of pricking wound allows of no optimist, and especially pulls out the pricking wound that pin causes and more should give great attention.
The harm of pricking wound is obvious to all.There is report to show have more than 20 kind of haematogenous to spread disease and can infect by acupuncture.More have statistics to show, acupuncture number of the infected in the whole world is up to 1,000 ten thousand people, therefore fatal has 1,800,000 people (WHO, 1998).When pricking wound, only need 0.004 milliliter of blood with HBV to be enough to make wounded body to infect HBV; The sharp instrument of being polluted by HIV is stabbed and the ratio of infected by HIV is 0.3%, and the sharp instrument of being polluted by HCV is stabbed and the ratio of HCV infection is 1.8%.Simultaneously China is again the district occurred frequently of hepatitis, and the infection of acquired immune deficiency syndrome (AIDS) entered the rapid growth phase, if medical worker has contacted again these patients' body fluid after being wounded by stabbing, infected probability will increase greatly.
In sum, now, we clinically most widely used syringe have that safety is low, effort and control the not good defect such as easily cause stabbing because of strength.
Utility model content
The purpose of this utility model is to provide in order to solve the problems of the technologies described above a kind of disposable screw type pin cap syringe.
This utility model is achieved through the following technical solutions above-mentioned purpose:
This utility model comprises syringe, entry needle and pin cap, and syringe comprises nipple, empty cylinder, piston; Entry needle comprises pintle, pin stalk, needle point, the liquid outlet that one end of described pintle is installed on described syringe is the nipple of syringe, one end of described pin stalk is installed on the other end of described pintle, described pin cap sleeve is installed on described pintle after being loaded on described entry needle, on the outer wall of described pintle, be provided with pintle screw thread, on the inwall of the opening of described pin cap, be provided with pin cap thread, described pin cap is threaded with described pintle.
Further, described pintle screw thread is convex pintle screw thread, and described pin cap thread is matrix pin cap thread.
Further, described pintle screw thread is matrix pintle screw thread, and described pin cap thread is convex pin cap thread.
Further, described pintle screw thread and described pin cap thread are triangle thread.
Further, described pintle screw thread and described pin cap thread are circle-arc screw-thread.
Further, the stricture of vagina of described angular thread is high is between 1 ~ 10mm.
Further, the stricture of vagina of described angular thread height is 5mm.
Further, the stricture of vagina of described circle-arc screw-thread is high is between 1 ~ 10mm.
Further, the stricture of vagina of described circle-arc screw-thread height is 8mm.
The beneficial effects of the utility model are:
This utility model is according to screw thread zerofriction force mechanical advantage, simple harmonic motion, Hooke's law and least action principle, making the rigid connection of pin cap and pintle into screw type is connected, open the mode of syringe by change, thereby change the main with force of medical worker, make the safety of syringe higher, use more laborsaving, with reduce medical worker in the time pulling out pin because strength is controlled the incidence rate of the not good pricking wound causing; The utlity model has advantage simple in structure, easy to use and that safety coefficient is higher.
Accompanying drawing explanation
Fig. 1 is the structural representation of disposable screw type pin cap syringe described in the utility model;
Fig. 2 is the cutaway view of pin cap described in the utility model;
Fig. 3 is the cutaway view of pintle described in the utility model.
1-pin cap, 2-pintle, 3-sky cylinder, 4-pin cap thread, 5-pintle screw thread, 6-pin stalk, 7-needle point, 8-nipple, 9-piston.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, Figure 2 and Figure 3: this utility model comprises syringe, entry needle and pin cap 1, syringe is divided into nipple 8, empty cylinder 3, piston 9; Entry needle is divided into pintle 2, pin stalk 6, needle point 7, the liquid outlet that one end of pintle 2 is installed on syringe is the nipple 8 of syringe, one end of pin stalk 6 is installed on the other end of pintle 2, pin cap 1 is installed on after being set on entry needle on pintle 2, on the outer wall of pintle 2, be provided with pintle screw thread 5, be provided with pin cap thread 4 on the inwall of the opening of pin cap 1, pin cap 1 is threaded with pintle 2, pintle screw thread 5 is stated pintle screw thread for convex, and pin cap thread 4 is matrix pin cap thread.
Embodiment one, pintle screw thread 5 and pin cap thread 4 are triangle thread, and the stricture of vagina height of angular thread is 5mm.
Embodiment two, pintle screw thread 5 and pin cap thread 4 are circle-arc screw-thread, and the stricture of vagina height of circle-arc screw-thread is 8mm.
This utility model is not limited to above-mentioned preferred forms, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or akin technical scheme, all belong to protection domain of the present utility model.
Claims (9)
1. a disposable screw type pin cap syringe, comprises syringe, entry needle and pin cap, and syringe is divided into nipple, empty cylinder, piston; Entry needle is divided into pintle, pin stalk, needle point, the liquid outlet that one end of described pintle is installed on described syringe is the nipple of syringe, one end of described pin stalk is installed on the other end of described pintle, described pin cap sleeve is installed on described pintle after being loaded on described entry needle, it is characterized in that: on the outer wall of described pintle, be provided with pintle screw thread, on the inwall of the opening of described pin cap, be provided with pin cap thread, described pin cap is threaded with described pintle.
2. the disposable screw type pin of one according to claim 1 cap syringe, is characterized in that: described pintle screw thread is convex pintle screw thread, and described pin cap thread is matrix pin cap thread.
3. the disposable screw type pin of one according to claim 1 cap syringe, is characterized in that: described pintle screw thread is matrix pintle screw thread, and described pin cap thread is convex pin cap thread.
4. the disposable screw type pin of one according to claim 1 cap syringe, is characterized in that: described pintle screw thread and described pin cap thread are triangle thread.
5. the disposable screw type pin of one according to claim 1 cap syringe, is characterized in that: described pintle screw thread and described pin cap thread are circle-arc screw-thread.
6. the disposable screw type pin of one according to claim 4 cap syringe, is characterized in that: between the high 1 ~ 10mm of being of stricture of vagina of described angular thread.
7. the disposable screw type pin of one according to claim 4 cap syringe, is characterized in that: the stricture of vagina height of described angular thread is 5mm.
8. the disposable screw type pin of one according to claim 5 cap syringe, is characterized in that: between the high 1 ~ 10mm of being of stricture of vagina of described circle-arc screw-thread.
9. the disposable screw type pin of one according to claim 5 cap syringe, is characterized in that: the stricture of vagina height of described circle-arc screw-thread is 8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320734159.7U CN203677664U (en) | 2013-11-20 | 2013-11-20 | Disposable helical needle cap injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320734159.7U CN203677664U (en) | 2013-11-20 | 2013-11-20 | Disposable helical needle cap injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203677664U true CN203677664U (en) | 2014-07-02 |
Family
ID=50999633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320734159.7U Expired - Fee Related CN203677664U (en) | 2013-11-20 | 2013-11-20 | Disposable helical needle cap injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203677664U (en) |
-
2013
- 2013-11-20 CN CN201320734159.7U patent/CN203677664U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20151120 |
|
| EXPY | Termination of patent right or utility model |