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US 5,967,978 AGranted
Intravascular sensing device
AssigneeCardima, Inc.
InventorsLaszlo Littmann, Gene Samson, Gabriel Vegh
Life of this patent
Estimating the term…
Abstract
A system for detecting electrical activity within a patient's heart comprising an elongated intravascular device, such as a catheter or guidewire, having at least one bipolar electrode pair on a distal section of the elongated device to intravascularly detect electrical activity within the patient's heart. The catheter or guidewire preferably has a tubular shaft formed of braided strands which include a plurality of insulated conductors which are electrically connected to the bipolar electrodes.
Claims9
An intravascular assembly, comprising:
- a) an elongated intravascular catheter having an elongated shaft, proximal and distal ends, a port in the proximal end, a port in the distal end, an inner lumen extending within the elongated shaft to and in fluid communication with the ports in the proximal and distal ends, a distal section configured to be advanceable through a coronary artery or cardiac vein of a patient's heart, a plurality of electrodes mounted on and longitudinally spaced along a length of the distal section thereof and a plurality of electrical conductors extending along the catheter shaft with each electrode being electrically connected to a separate electrical conductor;
- and
- b) an elongated intravascular guidewire device slidably disposed within the inner lumen of the elongated intravascular catheter, comprising:
- an elongated shaft having proximal and distal sections with the distal section being configured to be advanceable through a coronary artery or a cardiac vein of a patient's heart and having a core member extending to a distal extremity thereof and forming at least in part a shapeable flexible guiding tip.
1 more element
An intravascular assembly, comprising:
- a) an elongated catheter having an elongated shaft comprising a tubular member formed of braided strands which include a plurality of electrical conductors, proximal and distal ends, a port in the proximal end, a port in the distal end, an inner lumen extending within the elongated shaft to and in fluid communication with the ports in the proximal and distal ends, a distal section configured to be advanceable through a coronary artery or cardiac vein of a patient's heart, a plurality of sensing electrodes mounted on and longitudinally spaced along a length of the distal section thereof and with each electrode being electrically connected to a said electrical conductor;
- and
- b) an elongated guidewire device slidably disposed within the inner lumen of the elongated catheter, comprising:
- an elongated shaft having proximal and distal sections with the distal section being configured to be advanceable through a coronary artery or a cardiac vein of a patient's heart and having a core member extending to a distal extremity thereof and forming at least in part a shapeable flexible guiding tip.
1 more element
An intravascular assembly, comprising:
- a) an elongated catheter having an elongated shaft comprising a tubular member formed of braided strands which include a plurality of electrical conductors, proximal and distal ends, a port in the proximal end, a port in the distal end, an inner lumen extending within the elongated shaft to and in fluid communication with the ports in the proximal and distal ends, a distal section configured to be advanceable through a coronary artery or cardiac vein of a patient's heart, a plurality of electrodes mounted on and longitudinally spaced along a length of the distal section thereof and with each electrode being electrically connected to a said electrical conductor;
- and
- b) an elongated guidewire device slidably disposed within the inner lumen of the elongated catheter, comprising:
- an elongated shaft having proximal and distal sections with the distal section being configured to be advanceable through a coronary artery or a cardiac vein of a patient's heart and having a core member extending to a distal extremity thereof and forming at least in part a shapeable flexible guiding tip.
1 more element
An intravascular catheter, comprising:
- a) an elongated shaft having proximal and distal sections and a lumen extending therein configured to slidably receive a guidewire, with the distal section being configured to be advanceable through a vein or artery of a patient's heart, and the shaft including a tubular member formed of braided strands which include a plurality of insulated electrical conductors,
- b) at least four electrodes mounted on a length of the distal section with the electrodes having a substantially uniform interelectrode spacing and being secured to the tubular member, and
- c) at least one electrical connector on a proximal end of the shaft which has separate electrical connecting means connected to the individual electrical conductors.
Dependencies are inferred from the claim text.