Drive mechanism for drug delivery pumps with integrated status indication
US8939935B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2012 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Aug 30, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/58
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A drive mechanism having integrated status indication includes a drive housing, a status switch interconnect, a drive biasing member, a piston, and a drug container having a cap, a pierceable seal, a barrel, and a plunger seal, wherein the drive biasing member is configured to bear upon an interface surface of the piston. Drive mechanism may include an incremental status stem having a stem interconnect, wherein the stem resides within the drive housing and the piston, and wherein the stem has an interconnect which engages one or more contacts on the piston to provide incremental feedback. A drug delivery pump with integrated status indication includes a housing and an assembly platform, upon which an activation mechanism, an insertion mechanism, a fluid pathway connection, a power and control system, and the drive mechanism having a drug container may be mounted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.