Apparatus for vascular mapping and methods of use
First Claim
1. Apparatus for mapping an interior surface of a lumen of a patient'"'"'s vasculature, the apparatus adapted for connection to a display device, the apparatus comprising:
- a catheter having a proximal end, a distal end, and a portion defining a guide wire lumen, the catheter configured for percutaneous, transluminal insertion in the patient'"'"'s vasculature along a guide wire;
a first contact disposed on the distal end, the first contact having a feature that varies as a function of a deflection imposed on the first contact by the interior surface of the lumen;
circuitry for measuring the feature;
circuitry for correlating the measured feature to the deflection and for providing an output to the display device corresponding to the deflection.
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Accused Products
Abstract
Apparatus and methods are provided for mapping an interior surface of a section of a body lumen comprising a catheter having a plurality of elements circumferentially disposed around its distal end that contact the interior surface of a body lumen and provide output signals corresponding to the local diameter of the lumen. In a preferred embodiment, the contacts are of an electrical-mechanical type, such that an output signal may be generated which is proportional to the degree of deflection of the contact caused by the local diameter of the body lumen. The distal end of the catheter is translated through the body lumen for a predetermined distance, while the output signals are reproduced on either an analog recorder or as a digital three-dimensional display. A drive system for translating the catheter, and methods of use, are also provided.
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Citations
19 Claims
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1. Apparatus for mapping an interior surface of a lumen of a patient'"'"'s vasculature, the apparatus adapted for connection to a display device, the apparatus comprising:
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a catheter having a proximal end, a distal end, and a portion defining a guide wire lumen, the catheter configured for percutaneous, transluminal insertion in the patient'"'"'s vasculature along a guide wire; a first contact disposed on the distal end, the first contact having a feature that varies as a function of a deflection imposed on the first contact by the interior surface of the lumen; circuitry for measuring the feature; circuitry for correlating the measured feature to the deflection and for providing an output to the display device corresponding to the deflection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of mapping an interior surface of a section of a lumen of a patient'"'"'s vasculature, the method comprising:
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inserting a guide wire percutaneously and transluminally within a lumen of a patient'"'"'s vasculature; providing a catheter having a distal end, a portion defining a guide wire lumen, and a plurality of contacts circumferentially disposed on the distal end, each one of the plurality of contacts having a feature that varies as a function of a displacement imposed on the contact by the interior surface, the catheter configured for percutaneous, transluminal insertion in the patient'"'"'s vasculature; inserting the catheter transluminally along the guide wire into a selected section of the lumen so that the plurality of contacts are displaced by the interior surface; measuring the feature for each one of the plurality of contacts; correlating the measured feature for each of the plurality of contacts to a displacement for each one of the plurality of contacts; and displaying the displacement for each one of the plurality of contacts. - View Dependent Claims (18, 19)
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Specification