发明名称 |
VARIABLE RATE CONTROLLED DELIVERY DRIVE MECHANISMS FOR DRUG DELIVERY PUMPS |
摘要 |
A variable rate controlled delivery drive mechanism includes a drive mechanism housing, at least partially within which initially resides a biasing member positioned in an initially energized state within an inner cavity of a piston. The drive mechanism may include a gear drive having one or more screws and one or more corresponding nuts. The piston contacts a plunger seal and is configured to axially translate the plunger seal, by force asserted upon it from the biasing member, from a first position to a second position within a drug container for drug delivery. The biasing member is metered from free expansion from its energized state by the gear drive and a gear assembly mechanism having a motor. A drug delivery pump utilizes such variable rate controlled delivery mechanisms. A status reader configured to recognize one or more corresponding status triggers is utilized to provide feedback to a user. |
申请公布号 |
US2015217045(A1) |
申请公布日期 |
2015.08.06 |
申请号 |
US201314423565 |
申请日期 |
2013.08.29 |
申请人 |
BENTE, IV Paul F.;UNITRACT SYRINGE PTY LTD |
发明人 |
Bente, IV Paul F.;Hanson Ian B.;Mandes Vincent E.;O'Connor Sean M. |
分类号 |
A61M5/145 |
主分类号 |
A61M5/145 |
代理机构 |
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代理人 |
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主权项 |
1. A variable rate controlled delivery drive mechanism comprises: a drive mechanism housing, at least partially within which initially resides a biasing member positioned in an initially energized state within an inner cavity of a piston; a gear drive having a gear and a substantially axial internal pass-through; a first screw which at least partially resides within the axial internal pass-through, said first screw also having a substantially axial pass-through and an external first pitch wherein the external first pitch is configured to engage a first nut which also resides within the internal pass-through of the gear drive; a second nut configured to engage a second screw having an external second pitch, said second nut positioned within an axial post of a piston, said axial post and second nut positioned to reside at least partially within the axial pass-through of the first screw; wherein the piston has an interface surface adjacent to a plunger seal and is configured to axially translate the plunger seal, by force asserted upon it from the biasing member, from a first position to a second position within a drug container for drug delivery, and wherein the biasing member is metered from free expansion from its energized state. |
地址 |
Wayne PA US |