Plunger covers and plungers for use in syringes
US10668221B2 · kind B2 · utility
1Cited by
313References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2017 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Jun 7, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/31515
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A plunger cover for use with a syringe includes a sealing portion adapted to form a seal with the syringe and a central portion adapted to contact fluid within the syringe. The central portion can, for example, be more rigid than the sealing portion. The sealing portion and the central portion are connected in an overmolding process. The sealing portion can, for example, be formed from a thermoplastic elastomer or a thermoplastic polyurethane. The central portion can, for example, be formed from polypropylene, acrylonitrile butadiene styrene, polycarbonate or copolymers thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.