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    11.
    发明专利
    未知

    公开(公告)号：DE602005003355D1

    公开(公告)日：2007-12-27

    申请号：DE602005003355

    申请日：2005-06-07

    Applicant: MEDTRONIC INC

    Inventor： OLSEN JAMES M

    IPC: A61M5/142 ,  A61M5/145 ,  A61M5/148 ,  A61M5/168

    Abstract: A drug delivery system (10) has a positive pressure drug reservoir (15). A pump (19) is in fluid communication with the reservoir (15) via a first fluid passageway (18). The outlet (19b) of the pump (19) is in fluid communication with a first regulator (21). The regulator (21) includes a housing (24) that has a first subchamber (24a) and a second subchamber (24b). The second subchamber (24b) is divided into a lower chamber (28a) and a middle chamber (28b) by a diaphragm (28). A third fluid passageway (32) is positioned between the lower chamber (28a) and the drug reservoir (15), whereby accidental flow from the reservoir (15) to an outlet (21b) is prevented.

    12.
    发明专利
    未知

    公开(公告)号：DE60127183D1

    公开(公告)日：2007-04-19

    申请号：DE60127183

    申请日：2001-11-27

    Applicant: MEDTRONIC INC

    Inventor： OLSEN JAMES M

    IPC: A61M5/142 ,  A61K9/22

    Abstract: A medical device known as an implantable therapeutic substance delivery device is configured for implanting in humans to deliver a therapeutic substance such as pharmaceutical compositions, genetic materials, and biologics to treat a variety of medical conditions such as pain, spastisity, cancer, and many other conditions. The therapeutic substance delivery device has a permanent magnet solenoid pump that is energy efficient, accurate, small, compatible with therapeutic substances, and has many other improvements. The implantable therapeutic substance delivery device has a housing, a therapeutic substance reservoir, a power source, electronics, and a permanent magnet solenoid pump. The therapeutic substance reservoir is configured to contain a therapeutic substance and is coupled to the housing. The power source is carried in the housing to power the electronics and solenoid pump. The electronics are coupled to the solenoid pump and the solenoid pump is coupled to the therapeutic substance reservoir. The permanent magnet solenoid pump is configured for pumping therapeutic substance from the therapeutic substance reservoir through an infusion outlet at a programmed infusion rate. Many embodiments of the permanent magnet solenoid pump and its methods of operation are possible.

    14.
    发明专利
    未知

    公开(公告)号：FR2795967B1

    公开(公告)日：2002-01-25

    申请号：FR0005248

    申请日：2000-04-25

    Applicant: MEDTRONIC INC

    Inventor： OLSEN JAMES M

    IPC: A61M5/142 ,  A61M5/168 ,  A61M31/00

    Abstract: A pressure-sensitive overfill protection system for a refillable drug delivery device includes a collapsible link which, in a preferred embodiment, comprises an aneroid having an internal volume of gas at a reference pressure. The collapsible link, in its expanded state, supports on inlet valve in an open position to permit the ingress of new drug fluid into a bellows reservoir. The external surface of the aneroid is exposed to the bellows pressure. When the bellows pressure exceeds the reference pressure, the aneroid collapses and permits the inlet valve to move to a closed position under a biasing force provided by a spring. Further flow of new drug fluid into the drug delivery device is thereby prevented. Moreover, the closure of the valve provides a large increase in pressure is experienced in the refill device and may therefore be sensed by a clinician. Because the overfill protection system is pressure sensitive, it may be used with different sized bellows without modification.

    19.
    发明专利
    未知

    公开(公告)号：DE602005005320T2

    公开(公告)日：2009-03-26

    申请号：DE602005005320

    申请日：2005-04-22

    Applicant: MEDTRONIC INC

    Inventor： OLSEN JAMES M ,  MORRIS MARY M ,  HEGLAND MICHAEL ,  BLANCO JUSTIN A

    IPC: F16K1/40 ,  A61M1/00 ,  A61M5/142 ,  A61M5/168 ,  A61M25/00 ,  A61M27/00 ,  A61M31/00 ,  A61M39/10 ,  A61M39/22 ,  F16K47/12 ,  G01F1/68

    Abstract: Catheter systems including one or more flow restrictors are disclosed. The catheter systems may include two or more delivery branches. The delivery branches may be connected to a supply catheter section using a branching catheter connector that may include one or more flow restrictors. The flow restrictors may include a restrictor body located within a lumen with a channel located between the restrictor body and interior surface of the lumen, the channel restricting flow through the lumen past the flow restrictor. The channel may be defined by a groove formed in the restrictor body and/or the interior surface of the lumen. Methods of providing pressure relief by flowing fluid past a flow restrictor are also disclosed.

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