公开(公告)号：US20200378375A1

公开(公告)日：2020-12-03

申请号：US16957845

申请日：2018-12-17

Applicant: SENSILE MEDICAL AG

Inventor： THOMAS WYSS ,  ALEXANDRE PERRIER ,  CHRISTIAN HUBER ,  MATTHIAS MULLER

IPC: F04B19/00 ,  F04B9/04 ,  F04B13/00

Abstract: A pump (2) comprising a stator (4) and a rotor (6) axially and rotatably movable relative to the stator, the stator comprising a rotor shaft receiving cavity (18), an inlet (14) and an outlet (16) fluidly connected to the rotor shaft receiving cavity (18), the rotor comprising a shaft (24) received in the rotor shaft receiving cavity (18). The rotor shaft (24) comprises a cavity (39) receiving a piston portion (12) of the stator therein to form a piston chamber (42), a seal (44) mounted between the piston portion (12) and inner sidewall of the cavity (39) to sealingly close an end of the piston chamber (42). The rotor further comprises a port (38) fluidly connecting the piston chamber (42) to an outer surface (60) of the rotor shaft (24), the port (38) arranged to overlap at least partially the inlet (14) over a rotational angle α of the rotor corresponding to a pump intake phase, and arranged to overlap at least partially the outlet (14) over a rotational angle β of the rotor corresponding to a pump expel phase.

公开(公告)号：US20240181153A1

公开(公告)日：2024-06-06

申请号：US18281971

申请日：2022-03-08

Applicant: SENSILE MEDICAL AG

Inventor： PEER KOSTAL ,  ADRIAN BÜCHI ,  THOMAS WYSS

IPC: A61M5/142 ,  A61M5/172

CPC classification number: A61M5/14248 ,  A61M5/1723 ,  A61M2205/07

Abstract: A drug delivery device (1) comprising a housing (2), a delivery unit (3) including a drug container (6), and a control unit (4) mounted within the housing (2), the control unit comprising an on-body sensing system (5) including an electrode (56) connected to an electronic control system (47) of the control unit for measuring a capacitance value configured to detect whether the drug delivery device is positioned against a patient's skin, a skin contact wall (81) of the housing (2) having an inner side facing an inside of the housing in which the delivery unit and control unit are mounted, and an outer mounting side facing the outside of the housing and intended to be placed against the skin of a patient. The electrode (56) comprises a layer of metal mounted directly against the inner side of the skin contact wall.

公开(公告)号：US20210017969A1

公开(公告)日：2021-01-21

申请号：US16771244

申请日：2018-12-03

Applicant: SENSILE MEDICAL AG

Inventor： DEREK BRANDT ,  THOMAS WYSS ,  REGINA MARBET ,  ADRIAN BÜCHI ,  ALEXANDRE PERRIER

IPC: F04B9/04 ,  F04B43/04 ,  F04B17/03

Abstract: A micropump including: a stator (4); a rotor (6) slidably and rotatably mounted at least partially in the stator, the rotor comprising a first axial extension (24) having a first diameter (D1) and a second axial extension (26) having a second diameter (D2) greater than the first diameter; a first valve (V1) formed by a first valve seal (18) mounted on the stator around the first axial extension, in conjunction with a first channel (42) in the rotor that is configured to allow liquid communication across the first valve seal when the first valve is in an open position; a second valve (V2) formed by a second valve seal (20) mounted on the stator around the second axial extension, in conjunction with a second channel (44) in the rotor that is configured to allow liquid communication across the second valve seal when the second valve is in an open position; a pump chamber (8) formed between the rotor and stator and between the first valve seal and second valve seal, and a cam system comprising a cam track (22, 22′) on one of the rotor or stator and a cam follower (36, 36′) on the other of the rotor or stator for axially displacing the rotor relative to the stator as a function of the rotation of the rotor, the cam track comprising a valves-closed chamber-full section (28), a valves-closed chamber-empty section (30), an intake section (32) and an expel section (34). The expel section comprises an expel hold position (34b) defining an intermediate axial position between the valves-closed chamber-full section and valves-closed chamber-empty section for partial delivery of a pump cycle volume during the expel phase.