Syringe cap, syringe assembly, and prefilled syringe
US11090442B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 2017 |
| Grant date | Aug 17, 2021 |
| Priority date | — |
| Expiry date | Apr 30, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2209/10
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A syringe cap is configured to be removably attached to a barrel to seal a needle hole in a puncture needle held by a barrel tip portion of the barrel, and comprises a first member that is configured to be pierced with the puncture needle and that comprises an elastic material having a Young's modulus in the range of 1 to 10 MPa; and a second member that comprises an elastic hollow body having a Young's modulus in the range of 1 to 10 MPa and that is configured form a closed space between the first member and the barrel. A vapor permeability of a material from which the first member is formed is lower than a vapor permeability of a material from which the second member is formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.