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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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公开(公告)号：CA2249616C
公开(公告)日：2007-03-13
申请号：CA2249616
申请日：1997-03-14
Applicant: MEDTRONIC INC
Inventor： MORRIS MARY M
Abstract: An introducer system featuring a sheath which is kink resistant. Such a sheath thereby permits the sheath to be dramatically bent while still allowing a lead to be introduced therethrough. The kink resistance is provided by a composite construction of the sheath. In particular the sheath has at least one integral reinforcing fiber. In the preferred embodiment the reinforcing fibers are provided in a braided configuration. The sheath preferably is constructed to be readily split using a slitter in a longitudinal direction and thus permits the sheath to be removed from the venous system without having to withdraw the sheath over an end of the pacemaker lead. In an alternate embodiment the sheath is scored, including the reinforcing fibers, to thereby permit the sheath to be longitudinally split apart and removed from the venous system without having to withdraw the sheath over an end of the pacemaker lead.
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公开(公告)号：CA2148674C
公开(公告)日：2006-03-14
申请号：CA2148674
申请日：1995-05-04
Applicant: MEDTRONIC INC
Inventor： STEWART MARK T , MORRIS MARY M , DIDOMENICO EDWARD , KEENEY KENNETH W
Abstract: This invention relates to the preferential glow discharge at the inside diameter (ID) of plastic tubing, particularly very small tubing.
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公开(公告)号：FR2808209B1
公开(公告)日：2004-04-09
申请号：FR0104739
申请日：2001-04-06
Applicant: MEDTRONIC INC
Inventor： PEARSON ROBERT MARK , MORRIS MARY M , HANKNER DOUGLAS OWEN
Abstract: A medical catheter comprising a flexible tube having an outer wall and an inner wall, the inner wall defining a lumen, the lumen extending longitudinally along the flexible tube and having a cross-sectional area; and a flexible core within the lumen substantially extending longitudinally along the flexible tube, the flexible core having a cross-sectional area smaller than the cross-sectional area of the lumen at any given longitudinal point along the flexible tube and flexible core, the flexible tube and the flexible core defining a passageway, and which in combination provides structure resistant to occlusion of the passageway.
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公开(公告)号：CA2486173A1
公开(公告)日：2003-12-04
申请号：CA2486173
申请日：2003-05-22
Applicant: MEDTRONIC INC
Inventor： FERNANDES BRIAN C A , MORRIS MARY M , BERGAN MATTHEW A , GARDESKI KENNETH C , SPEAR STANTON C
Abstract: A method involves selecting a type of cell for implantation into a mammal an d identifying the specific gravity or density of the cell type. Then, a carrie r liquid is selected which has a specific gravity or density within a range of specific gravities or densities which approximately matches the specific gravity or density of the selected cell type. A liquid for delivery of growt h cells into tissue of a mammal is also provided in which the density of a carrier fluid component is matched to the density of the cells being consistently delivered by the carrier fluid.
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Patent Agency Ranking
公开(公告)号：DE69523977T2
公开(公告)日：2002-07-18
申请号：DE69523977
申请日：1995-04-28
Applicant: MEDTRONIC INC
Inventor： STEWART MARK T , MORRIS MARY M , DIDOMENICO EDWARD , KENNEY KENNETH W , HESS DOUGLAS N
Abstract: An implantable electrode type lead assembly 10 of the flexible type which is particularly adapted for implantation in the cardiac tissue for applications such as use with a pacemaker. The lead assembly has an electrode head 40 which includes a fixation spiral for implantation into tissue. The spiral or rotation action of the electrode head 40 is controlled by means of an elongated torsionally wound electrical coil conductor 14, the coil extending through the lead from the proximal to the distal end thereof and carried within a silicone tube 24 which is co-extensive therewith, the tube having been especially treated to modify the slip characteristics of the internal diameter (ID) thereof for high efficiency torque transfer.
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公开(公告)号：CA2426151A1
公开(公告)日：2002-04-25
申请号：CA2426151
申请日：2001-10-04
Applicant: MEDTRONIC INC
Inventor： MORRIS MARY M , DOLLIMER MICHAEL R , BOSER GREGORY A , BELDEN ELISABETH L
IPC: A61N1/05
Abstract: A cardiac transvenous defibrillation lead has a continuous coil conductor within a layer of insulation. A portion of the coil conductor is exposed as a defibrillation electrode. In order to enhance fluoroscopic visualization of the exposed electrode during implant, the end of the exposed electrode is marked with a radiopaque element. The element may be in the form of an adhesive filled with radiopaque material that is used to backfill under the layer of insulation. Alternativelly, a tube made of radiopaque material may be installed between the layer of insulation and the coil conductor.
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公开(公告)号：DE10113985A1
公开(公告)日：2001-12-20
申请号：DE10113985
申请日：2001-03-22
Applicant: MEDTRONIC INC
Inventor： PEARSON ROBERT M , HANKNER DOUGLAS , MORRIS MARY M
Abstract: A medical catheter comprising a flexible tube having an outer wall and an inner wall, the inner wall defining a lumen, the lumen extending longitudinally along the flexible tube and having a cross-sectional area; and a flexible core within the lumen substantially extending longitudinally along the flexible tube, the flexible core having a cross-sectional area smaller than the cross-sectional area of the lumen at any given longitudinal point along the flexible tube and flexible core, the flexible tube and the flexible core defining a passageway, and which in combination provides structure resistant to occlusion of the passageway.
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公开(公告)号：DE10113983A1
公开(公告)日：2001-12-20
申请号：DE10113983
申请日：2001-03-22
Applicant: MEDTRONIC INC
Inventor： MORRIS MARY M , HANKNER DOUGLAS , ELSBERRY DENNIS D , CHRISTIANSEN CHRIS C , HAMLEN ROBERT CUSHING
Abstract: A medical catheter comprising a proximal end having an opening for fluid containing a therapeutic drug, a distal end, the distal end defining at least one opening, and a porous portion covering the opening defined by the distal end. In one embodiment, the medical catheter comprises a proximal end having an opening for fluid containing a therapeutic drug, at least two distal ends. the proximal end connected to the two distal ends with a connector, the distal ends each defining at least, one opening, a diffuser covering the opening of each distal end, and a separate restrictor downstream of the connector and upstream of each distal end to provide substantially equal flow through each distal end. An additional restrictor can also be placed upstream of the connector. In another embodiment, a combination diffuser and restrictor covers the opening of each distal end.
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公开(公告)号：DE69520516T2
公开(公告)日：2001-07-12
申请号：DE69520516
申请日：1995-04-28
Applicant: MEDTRONIC INC
Inventor： STEWART MARK T , MORRIS MARY M , DIDOMENICO EDWARD , KENNEY KENNETH W
Abstract: This invention relates to an apparatus for providing preferential glow discharge at the inside diameter of plastic tubing, particularly very small diameter tubing.
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