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US 2020/0360601 A1Published application
Rotational metering pump for insulin patch
AssigneeBecton, Dickinson and Company
InventorsAlessandro E. Pizzochero, Richard Gyory, Kenneth Focht, Justin Fisk, Joe Gordon, Matthew Perry, Ajit D'Souza, Chris Petroff
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Abstract
A rotary pump for a fluid metering system is provided. The rotary pump reciprocates, and is reversed by a signal from a limit switch that is deflected by an actuator arm on a rotating sleeve of the pump system. The rotary pump includes a plunger and optional stopper formed from a two-shot molding process, and including seals overmolded onto the head of the plunger and the head of the optional stopper.
Claims2
A method of manufacturing a rotational metering pump, comprising,
- molding a plunger from rigid material;
- overmolding a seal onto a head of the plunger, the seal comprising viscoelastic elastomer;
- inserting the plunger and seal into a pump chamber;
- and
- inserting a pin into a hole in the plunger through a slot in a sleeve comprising the pump chamber.
2 more elements
Dependencies are inferred from the claim text.