Spring driven infusion pump

Details Spring driven infusion pump Spring driven infusion pump

A - Human Necessities

61

M

128/80

A61M 37/00 (2006.01) A61M 5/142 (2006.01) A61M 5/145 (2006.01)

Patent

CA 1260346

Abstract of the Disclosure An implantable infusion pump (20) for infusing drugs or other chemicals or solutions into the body. A flexible spring diaphragm (25) forms an outer back wall portion (26) of a housing (22) of the infusion pump (20). The spring diaphragm (25) applies substantially constant force over a range of displacement and communicating internal body pressure to the drug chamber (30) so as to maintain a substantially uniform pressure difference between the drug chamber (30) and the internal body pressure.

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