Syringe
US10898649B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2018 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Feb 5, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3128
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a general aspect, a syringe terminates the dispensing of a fluid based on a force applied to a plunger member of the syringe. In some aspects, a plunger member of a syringe includes a top portion, a bottom portion, and a contact portion. The top and bottom portions are in contact with the contact portion, and the bottom portion has a length greater than or equal to a length of the top portion. The contact portion permits the top portion to move independent of the bottom portion in response to a stress in the contact portion exceeding a critical stress. The stress in the contact portion is based on a first force applied to the top portion and a second force opposite the first force applied to the bottom portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.