Self-sterilizing hypodermic syringe
US4416663A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 1981 |
| Grant date | Nov 22, 1983 |
| Priority date | — |
| Expiry date | Oct 26, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3267
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A hypodermic syringe with a self-sterilizing needle, wherein a capsule containing sterilizing fluid and having perforative ends of flexible material with elastic memory tendencies for self sealing after axial penetration by the forward end of the needle is coaxially and slidably received over the forward end of the needle with the forward exposed end of the needle slidably penetrating one end of the capsule in perforation for sterilization of the needle. A guide is provided for the capsule, and guides the capsule for axial movement on the needle when axial force is applied against the outer end of the capsule, such as by engagement against the hide of an animal, to cause the exposed end of the needle to penetrate the outer end of the capsule for hypodermic penetration. A spring is also provided for axial urging and positioning the capsule outward to its original position of rest, such that the exposed end portion of the needle is again enclosed in the capsule for sterilization when the hypodermic penetration force is removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.