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公开(公告)号：CA2148674A1
公开(公告)日：1995-11-07
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：AU661623B2
公开(公告)日：1995-07-27
申请号：AU5646494
申请日：1994-02-28
Applicant: MEDTRONIC INC
Inventor： MORRIS MARY M
Abstract: A body-implantable lead (10) for use in cardiac pacing having a proximal end and a distal end, the proximal end being adapted to be connected to a medical device, a tissue securing means such as a helix (40) extending from the lead body distal end, an electrical conductor extending between the proximal and distal ends of the lead, and a longitudinally extending radiopaque marker (35) affixed to the lead body (10) proximal to the tissue securing means, the radiopaque marker (35) showing rotational movement or distortion of the radiopaque marker (35) under fluoroscopy.
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公开(公告)号：AT339226T
公开(公告)日：2006-10-15
申请号：AT03741809
申请日：2003-05-22
Applicant: MEDTRONIC INC
Inventor： MORRIS MARY M , FERNANDES BRIAN C A , SPEAR STANTON C , BERGAN MATTHEW A , GARDESKI KENNETH C
Abstract: A method involves selecting a type of cell for implantation into a mammal and identifying the specific gravity or density of the cell type. Then, a carrier 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 growth 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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公开(公告)号：CA2589362A1
公开(公告)日：2006-06-08
申请号：CA2589362
申请日：2005-12-01
Applicant: MEDTRONIC INC
Inventor： LECKRONE MICHAEL E , UJHELYI MICHAEL R , GARDESKI KENNETH J , MORRIS MARY M
Abstract: Methods and systems for transvenously accessing the pericardial space via the vascular system and atrial wall, particularly through the superior vena cava and right atrial wall, to deliver treatment in the pericardial space are disclosed. A steerable instrument is advanced transvenously into the right atrium of the heart, and a distal segment is deflected into the right atrial appendage. A fixation catheter is advanced employing the steerable instrument to affix a distal fixation mechanism to the atrial wall. A distal segment of an elongated medical device, e.g., a therapeutic catheter or an electrical medical lead, is advanced through the fixation catheter lumen, through the atrial wall, and into the pericardial space. The steerable guide catheter is removed, and the elongated medical device is coupled to an implantable medical device subcutaneously implanted in the thoracic region. The fixation catheter may be left in place.
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公开(公告)号：CA2542998A1
公开(公告)日：2005-05-12
申请号：CA2542998
申请日：2004-10-21
Applicant: MEDTRONIC INC
Inventor： MORRIS MARY M
IPC: A61M5/00
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Patent Agency Ranking
公开(公告)号：FR2806918B1
公开(公告)日：2005-04-22
申请号：FR0103777
申请日：2001-03-20
Applicant: MEDTRONIC INC
Inventor： MORRIS MARY M , HANKNER DOUGLAS , ELSBERRY DENNIS D , CHRISTIANSEN CHRIS C , CUSHING HAMLEN ROBERT
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：IE20010244A1
公开(公告)日：2002-04-03
申请号：IE20010244
申请日：2001-03-12
Applicant: MEDTRONIC INC
Inventor： PEARSON ROBERT M , MORRIS MARY M , HANKER DOUGLAS
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：FR2808209A1
公开(公告)日：2001-11-02
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 has a flexible tube containing a flexible core extending along it. At any point the core is of much smaller cross section than the lumen defined by the tube interior wall. Together the tube and the core define a passage and a structure that resists obstruction of the passage. Independent claims are included for the following: (a) preventing occlusion of a flexible tube by placing a flexible core within it as above; (b) manufacturing a medical catheter by co-extruding a flexible core from polyurethane onto polyurethane containing a heavy metal and placing the core within a flexible tube or relatively larger cross section. Preferred Features: The proximal end of the tube is 10 - 40 times more rigid than its distal end. The core may be fixed to the wall of the tube or moves freely within it. The core or the passage may be circular or non-circular. The core has an external diameter
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公开(公告)号：AU6558098A
公开(公告)日：1998-11-24
申请号：AU6558098
申请日：1998-03-16
Applicant: MEDTRONIC INC
Inventor： WILLIAMS TERRELL M , MULIER PETER M J , KEIMEL JOHN G , LASKE TIMOTHY G , BOSER GREGORY A , MORRIS MARY M , MIN XIAOYI
Abstract: A lead and a lead system for dispersion of a cardioversion/defibrillation electrode formed of one or more small diameter defibrillation electrodes in a heart chamber and for attaching a pace/sense electrode in contact with the heart. The small diameter defibrillation electrode or electrodes extend distally from the distal end of the lead body. If multiple electrodes are employed, they are preferably biased to spread apart when unrestrained and have a cross-section size small enough to be inserted into interstices of trabeculae in the ventricular chamber. The distal ends of the defibrillation electrodes may be free of attachment to the lead body or may be attached by a weak bond to the distal portion of the lead.
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公开(公告)号：CA2118962A1
公开(公告)日：1994-10-01
申请号：CA2118962
申请日：1994-03-14
Applicant: MEDTRONIC INC
Inventor： MORRIS MARY M
Abstract: A body-implantable lead (10) for use in cardiac pacing having a proximal end and a distal end, the proximal end connected to a medical device, an active fixation device such as a helix electrode (330) having a distal end and a proximal end, the tissue securing means extending from the lead body distal end, an electrical conductor (15) extending between the proximal and distal ends of the lead, and a longitudinally extending radiopaque marker (35 or 335) affixed to the lead body (10) proximal to the tissue securing means, the radiopaque marker (35 or 335) showing rotational movement or distortion of the radiopaque marker (35 or 335) under fluoroscopy.
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