Controlled delivery drive mechanisms for drug delivery pumps
US10092693B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2013 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Aug 18, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/3334
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A controlled delivery drive mechanism includes a drug container having a barrel and a plunger seal; a drive housing within which at least initially partially resides a piston having an interface surface and a drive rack; and a power spring. The piston is configured to contact and axially translate the plunger seal within barrel. The mechanism may be configured to convert rotational movement of a drive pinion to axial translation of the drive rack, or to convert axial force of a linear power spring into torsional motion of a drive pinion. A regulating mechanism meters the drive pinion such that the piston is axially translated at a controlled rate. The drug container may contain a drug fluid within a drug chamber for drug delivery at a controlled rate. The regulating mechanism may be an escapement regulating mechanism. A drug delivery pump includes such controlled delivery drive mechanisms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.