公开(公告)号：EP0939662A1

公开(公告)日：1999-09-08

申请号：EP96919421.0

申请日：1996-06-13

申请人： MEDTRONIC, INC.

发明人： DUFFIN, Edwin, G. ,  THOMPSON, David, L. ,  GOEDEKE, Steven, D. ,  HAUBRICH, Gregory, J.

IPC分类号： A61B5 ,  A61N1 ,  H04Q7 ,  H04Q9

CPC分类号： A61N1/37282 ,  A61B5/1112 ,  G06F19/00 ,  G06F19/3418

摘要： A system for communicating with a medical device implanted in an ambulatory patient and for locating the patient in order to selectively monitor device function, alter device operating parameters and modes and provide emergency assistance to and communications with a patient (41). The implanted device includes a telemetry transceiver for communicating data and operating instructions between the implanted device and an external patient communications control device that is either worn by or located in proximity to the patient within the implanted device transceiving range. The control device preferably includes a communication link with a remote medical support network, a global positioning satellite receiver for receiving positioning data identifying the global position of the control device, and a patient activated link for permitting patient initiated personal communication with the medical support network (89). A system controller in the control device controls data and voice communications to and from the medical support network. The communications link may comprise a world wide satellite network, hardwired telephone network, a cellular telephone network or other personal communications system.

公开(公告)号：EP0939605A1

公开(公告)日：1999-09-08

申请号：EP96933837.0

申请日：1996-09-19

申请人： MEDTRONIC, INC.

发明人： BORST, Cornelius ,  MANSVELT BECK, Hendricus, J. ,  GRUNDEMAN, Paul, F. ,  JANSEN, Erik, W., L.

IPC分类号： A61B17 ,  A61B19

CPC分类号： A61B17/02 ,  A61B17/0206 ,  A61B90/50 ,  A61B2017/00243 ,  A61B2017/00703 ,  A61B2017/0243 ,  A61B2017/306 ,  A61B2018/00291

摘要： A method and apparatus for temporarily immobilizing a local area of tissue. In particular, the present invention provides a method and apparatus for temporarily immobilizing a local area of heart tissue to thereby permit surgery on a coronary vessel in that area without significant deterioration of the pumping function of the beating heart. The local area of heart tissue is immobilized to a degree sufficient to permit minimally invasive or micro-surgery on that area of the heart. The present invention features a suction device to accomplish the immobilization. The suction device is coupled to a source of negative pressure. The suction device has a series of suction ports on one surface. Suction through the device causes suction to be maintained at the ports. The device further is shaped to conform to the surface of the heart. Thus, when the device is placed on the surface of the heart and suction is created, the suction through the ports engages the surface of the heart. The suction device is further fixed or immobilized to a stationary object, such as an operating table or a sternal or rib retractor. Thus, the local area of the heart near the suction device is temporarily fixed or immobilized relative to the stationary object while suction is maintained. In such a fashion, the coronary artery may be immobilized even though the heart itself is still beating so that a bypass graft may be performed. In addition the suction device may be used in either a conventional, open-chest environment or in a minimally-invasive environment, e.g. endoscopic.

公开(公告)号：EP0904119A1

公开(公告)日：1999-03-31

申请号：EP97921430.0

申请日：1997-04-28

申请人： MEDTRONIC, INC.

发明人： WARD, Scott ,  RISE, Mark, T.

IPC分类号： A61M5

CPC分类号： A61M5/14276 ,  A61M5/1723 ,  A61M2210/0693 ,  G06F19/00

摘要： Techniques using one or more drugs and electrical stimulation for treating a neurological disorder, including epilepsy, by means of an implantable signal generator and electrode and an implantable pump and catheter. A sensor is used to detect a seizure or symptoms resulting from the onset of a seizure. A microprocessor algorithm analyzes the output from the sensor in order to regulate the stimulation and drug dosage delivered to the neural tissue.

公开(公告)号：EP0902691A1

公开(公告)日：1999-03-24

申请号：EP97919981.0

申请日：1997-03-31

申请人： MEDTRONIC, INC.

发明人： PLOTKIN, Neil, D.

IPC分类号： A61M1 ,  A61M5

CPC分类号： A61M1/3627 ,  A61M1/3632 ,  A61M5/40

摘要： In a venous/cardiotomy reservoir, substantially accurate volume indication and post-operative use are provided while preventing introduction of air into the reservoir outlet, by interposing a collapsible bag between the underside of a rigid reservoir housing and the reservoir outlet.

公开(公告)号：EP0902689A1

公开(公告)日：1999-03-24

申请号：EP97919974.0

申请日：1997-03-31

申请人： MEDTRONIC, INC.

发明人： PLUNKETT, Sean, D. ,  PALERMO, Henry, W.

IPC分类号： A61M1

CPC分类号： A61M1/1005 ,  A61M1/1006 ,  A61M1/1037 ,  A61M1/1039 ,  A61M1/1046 ,  A61M1/1086 ,  A61M2205/33 ,  A61M2205/3303 ,  A61M2230/06 ,  A61M2230/005

摘要： Pulsatile blood flow in a heart-lung machine is accomplished by pumping blood into a bladder (28) at a constant rate, and cyclically emptying the bladder into aortic line of the heart-lung machine either by means of the bladder's own elasticity or by a mechanical compression mechanism (44, 56) which can be programmed to simulate the human heartbeat.

公开(公告)号：EP0880370A1

公开(公告)日：1998-12-02

申请号：EP97905585.0

申请日：1997-01-15

申请人： MEDTRONIC, INC.

发明人： ELGAS, Roger, J. ,  GREMEL, Robert, F.

IPC分类号： A61M1 ,  B01D61 ,  B01D63

CPC分类号： B01D63/02 ,  B01D63/025 ,  B01D2313/105 ,  B01D2313/143 ,  Y10S261/28

摘要： The obstruction of a curved blood manifold window (27) in a blood oxygenator (10) by oxygenation fibers (46) which lie along a chord (58) of a curved window (27) when wound upon the oxygenator core (44) is avoided by recessing the manifold wall portions (38) most closely adjacent the window (27) sufficiently so that the fibers (46) lying on that chord (58) remain sufficiently spaced from those closest wall portions (38) to allow blood flow between those wall portions (38) and the closest fibers (46).

公开(公告)号：EP0873591A1

公开(公告)日：1998-10-28

申请号：EP97901424.0

申请日：1997-01-10

申请人： MEDTRONIC, INC.

发明人： WEIJAND, Koen, J.

IPC分类号： A61N1 ,  H03K5

CPC分类号： A61N1/3706 ,  H03K5/02 ,  H03K5/023

摘要： An output circuit is provided for delivering output pulses in either a constant voltage or constant current mode. The output circuit has a simple architecture built around a pair of area-ratioed transistors which operate in a linear range carrying a ratio of currents corresponding to the area ratio. The circuit is mode controlled by a switch network which connects to a constant current source, which constant current source controls the pulse amplitude, either current or voltage. As used in a pacemaker embodiment, the circuit is controllable to control the mode and/or amplitude of the pulse following a cyclical decision to deliver a pulse, and with an amplitude derived from pacemaker data and controllable during delivery of the pulse. The circuit has high speed control which enables amplitude modulation of the pulse, for transmitting encoded data to an external device adapted to receive the data.

公开(公告)号：EP0817656A1

公开(公告)日：1998-01-14

申请号：EP96912501.0

申请日：1996-03-29

申请人： MEDTRONIC, INC.

发明人： JOHANSON, Mark, A. ,  NOONE, Michael, S.

IPC分类号： A61M25 ,  A61B5

CPC分类号： A61M25/09 ,  A61M2025/09083

摘要： A catheter guidewire having an elongate core wire, an elongate tube defining a tube lumen, the proximal end of the tube being affixed to the distal end of the core wire. The tube has a smooth exterior surface and one or more plug segments filling the tube lumen, each plug segment having a stiffness less than that of the core wire and less than of the proximally preceding plug segment. The proximal end of the proximal most plug segment is affixed to the distal end of the core wire, the distal end of the tube is affixed to the distal most plug segment. A smoothly rounded distal tip extends beyond and is affixed to the distal end of the tube. The tube may be formed of a super-elastic metallic member or formed from a synthetic resin. The tube wall thickness is preferably between 0.002 inches and 0.005 inches.

公开(公告)号：EP0814699A1

公开(公告)日：1998-01-07

申请号：EP96903542.0

申请日：1996-01-17

申请人： MEDTRONIC, INC.

发明人： HALPERIN, Louis, E. ,  CARNEY, James, K. ,  TURI, Michael, N. ,  BECK, Robert, C.

IPC分类号： A61B5 ,  G01L19

CPC分类号： A61B5/7475 ,  A61B5/0002 ,  A61B5/0031 ,  A61B5/02156 ,  A61B5/03 ,  A61B5/1455 ,  A61B2560/0257 ,  G01L19/02

摘要： A system (10) for long term monitoring of an internal patient medical parameter having an external reference and means to correct the internal measurements of the parameter via external measurements taken by the external reference device (EDx). A coordinating device (P) makes the correction and makes available a histogram-based record of the parameter over time. This information can be used to reprogram an implantable device (Dx) or for other therapeutic or diagnostic purposes. Pressure sensor embodiment is detailed.

公开(公告)号：EP0796130A1

公开(公告)日：1997-09-24

申请号：EP96930870.0

申请日：1996-09-13

申请人： MEDTRONIC, INC.

发明人： HESS, Michael, F. ,  MARKOWITZ, H., Toby

IPC分类号： A61N1

CPC分类号： A61N1/3622 ,  A61N1/3682

摘要： Some false tachy detection prevention algorithms miss blocked 2:1 sensing and therefore miss some true tachy situations. Here an algorithm that uses sensed far field R waves to determine whether to search for blocked 2:1 sensing is implemented and a search algorithm is also described.