MAGNETIC COUPLING AND DETECTION MECHANISM FOR A PUMP DEVICE

Abstract: a bi-functional magnetic mechanism generates a magnetic attraction force to magnetically engage a disposable and reusable parts of a pump device, and, at the same time, the bi-functional magnetic mechanism uses the same magnetic field to detect an engagement between the two parts of the pump device. the mechanism includes a permanent magnet to produce magnetic field(s) that zero out a net magnetic field at a sensor, an asymmetrical metal plate (amp) to magnetically disrupt (deflect, redirect) the magnetic field(s) at the sensor, and a magnetic field sensor to sense the magnetic disruption. the magnet and the sensor are incorporated in the reusable part of the pump device such that the magnetic field sensor is circumferentially surrounded by the magnet. the amp is incorporated in the disposable part such that the amp subtends the sensor (i.e., adjacent to the sensor) when the disposable part and reusable part are engaged.

Inventor(s): Lior Bar Chen, Aharon Finkelstein, Nitsan Mane

CPC Classification: A61M5/142 (DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals ; means for inserting tampons ; devices for administering food or medicines orally ; containers for collecting, storing or administering blood or medical fluids ); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery ; chemical aspects of surgical articles ); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents )})

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