Biopotential sensing device and method for making
First Claim
1. A biopotential sensing device comprising:
- a thin flexible substrate having a proximal end and a distal end;
a predetermined printed circuit pattern formed on said substrate, said pattern having at least one electrode pad at its distal end, at least one terminal pad at its proximal end and conductor means selectively interconnecting said electrode pads and said terminal pads;
an elongated support member; and
means for mounting and securing said substrate to said support member, said means causing the covering of said conductor means while leaving said electrode pads and said terminal pads exposed.
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Accused Products
Abstract
A printed circuit biopotential sensing device is provided which is particularly adapted for endocardial or other deep body applications. The device has a predetermined printed circuit pattern formed on a thin film substrate, the pattern having at least one electrode pad at its distal end, at least one terminal pad at the proximal end, and conductor means selectively interconnecting the electrode pads and terminal pads. The substrate is secured to, and is preferably wrapped around an elongated member which is preferably tube-shaped in a manner such that the electrodes are exposed at the distal end of the member, and the terminal pads at the proximal end of the substrate are utilized in forming a suitable connector from the device. By forming the conductors on only a selected fraction of the width of the substrate and overlapping the portion of the substrate containing the conductors during the helical wrapping process, the substrate insulates and protects the conductors and eliminates the need for a separate protective layer. The device may, for example, be a percutaneous catheter with the electrodes being formed at the distal end thereof, or may be a sensing probe which includes a sensing support member, such as a solid plastic member or a balloon which has the distal end of the substrate containing the electrode pads secured thereto.
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Citations
24 Claims
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1. A biopotential sensing device comprising:
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a thin flexible substrate having a proximal end and a distal end; a predetermined printed circuit pattern formed on said substrate, said pattern having at least one electrode pad at its distal end, at least one terminal pad at its proximal end and conductor means selectively interconnecting said electrode pads and said terminal pads; an elongated support member; and means for mounting and securing said substrate to said support member, said means causing the covering of said conductor means while leaving said electrode pads and said terminal pads exposed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for fabricating a biopotential sensing device comprising the steps of:
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forming a predetermined printed circuit pattern on a thin film substrate, the pattern having at least one electrode pad at a distal end of the substrate, at least one terminal pad at a proximal end of the substrate, and conductor means selectively interconnecting the electrode pads and terminal pads; mounting the substrate to an elongated support member and securing the substrate thereto, said mounting and securing step involving wrapping at least a portion of the substrate around at least a portion of said elongated member, and being performed in a manner such as to cover said conductor means while leaving at least a portion of each electrode pad exposed at a distal end of the elongated member; and utilizing the terminal pads to form a connector means, permitting the device to be connected to external circuitry. - View Dependent Claims (22, 23, 24)
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Specification