Catheter assembly
First Claim
Patent Images
1. A medical diagnostic device comprising:
- (a) an elongate catheter having an elongate interior bore and an end for insertion into a living body;
(b) a planar dielectric substrate attached to said catheter so as to protrude longitudinally outwardly from said interior bore at said end;
(c) a plurality of electrical conductors mounted longitudinally on said dielectric substrate in a transversely spaced array protruding from said substrate in a direction normal to the plane thereof so as to define a longitudinal passageway between adjacent conductors, said array having an exterior end protruding longitudinally outwardly from said bore;
(d) a pressure-sensing transducer having a pressure-sensing diaphragm with respective inner and outer sides, said transducer being mounted on said array of conductors so as to protrude longitudinally outwardly from said bore with said inner side of said diaphragm in communication with said passageway; and
(e) means connecting said passageway with said bore and isolating said passageway from said outer side of said diaphragm.
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Abstract
A compact catheter assembly provides for the communication of a reference pressure to a pressure-sensing transducer by forming a passageway between spaced electrical conductors mounted on a planar dielectric substrate. The cathter assembly also provides for the operative mounting of multiple transducers onto a single catheter tip by employing a plurality of planar dielectric substrates, each having an array of electrical conductors, stacked atop one another so as to protrude longitudinally from the end of the catheter bore at different distances. A plurality of electrical transducers protrude longitudinally in series from the bore overlying the substrates.
141 Citations
10 Claims
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1. A medical diagnostic device comprising:
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(a) an elongate catheter having an elongate interior bore and an end for insertion into a living body; (b) a planar dielectric substrate attached to said catheter so as to protrude longitudinally outwardly from said interior bore at said end; (c) a plurality of electrical conductors mounted longitudinally on said dielectric substrate in a transversely spaced array protruding from said substrate in a direction normal to the plane thereof so as to define a longitudinal passageway between adjacent conductors, said array having an exterior end protruding longitudinally outwardly from said bore; (d) a pressure-sensing transducer having a pressure-sensing diaphragm with respective inner and outer sides, said transducer being mounted on said array of conductors so as to protrude longitudinally outwardly from said bore with said inner side of said diaphragm in communication with said passageway; and (e) means connecting said passageway with said bore and isolating said passageway from said outer side of said diaphragm. - View Dependent Claims (2, 3, 4)
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5. A medical diagnostic device comprising:
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(a) an elongate catheter having an elongate interior bore and an end for insertion into a living body; (b) a plurality of planar dielectric substrates in parallel relation one above the other and protruding longitudinally at different distances outwardly from said end; (c) a plurality of arrays of electrical conductors, each array being mounted longitudinally on a respective one of said dielectric substrates; and (d) respective first and second electrical transducers protruding longitudinally in series outwardly from said end, each transducer overlying a dielectric substrate and being operatively coupled to a respective different array of said electrical conductors. - View Dependent Claims (6, 7, 8, 9, 10)
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Specification