Implantable pressure sensor lead
First Claim
1. A pressure sensor lead comprising:
- an elongated implantable lead body having proximal and distal ends and having at least one electrical conductor wire therein extending between said proximal and distal ends;
a pressure sensor means for generating an electrical output signal corresponding to pressure applied thereto, said pressure sensor means being disposed near said distal end of said lead and coupled to said at least one electrical conductor wire;
a tissue piercing hollow needle having a base and a tip and an internal lumen, mounted to said pressure sensor means such that lumen serves as means to communicate pressure to said pressure sensor means, wherein said needle is electrically conductive and is electrically coupled to said at least one electrical conductor wire.
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Accused Products
Abstract
A pressure sensing lead, wherein a hollow needle extending from the distal end of the lead is coupled to a pressure transducer. The hollow needle may be coiled and adapted to be screwed into human tissue, for example through the ventricular septum from the right ventricle into the left ventricle of a patient'"'"'s heart, or through the wall of the heart into the pericardial sac. Alternatively, the hollow needle may be straight and a separate coiled needle mounted around the straight needle may be provided to affix the lead to body tissue. Pressure gradients are communicated from the tip of the hollow needle to its base and applied to the pressure sensor, allowing, for example, left ventricular pressure measurements to be taken from the right ventricle or pericardial sac pressure measurements to be taken from within the heart without the necessity of the pressure sensor itself passing through the heart wall.
432 Citations
17 Claims
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1. A pressure sensor lead comprising:
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an elongated implantable lead body having proximal and distal ends and having at least one electrical conductor wire therein extending between said proximal and distal ends; a pressure sensor means for generating an electrical output signal corresponding to pressure applied thereto, said pressure sensor means being disposed near said distal end of said lead and coupled to said at least one electrical conductor wire; a tissue piercing hollow needle having a base and a tip and an internal lumen, mounted to said pressure sensor means such that lumen serves as means to communicate pressure to said pressure sensor means, wherein said needle is electrically conductive and is electrically coupled to said at least one electrical conductor wire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A pressure sensor lead comprising:
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an elongated implantable lead body having proximal and distal ends and having an electrical conductor therein extending between said proximal and distal ends; a pressure sensor means for generating an electrical output signal corresponding to pressure applied thereto, said pressure sensor means being disposed near said distal end of said lead and coupled to said electrical conductor; a hollow needle having a base and a tip and an internal lumen, mounted to said pressure sensor means such that lumen serves as means to communicate pressure to said pressure sensor means, wherein said hollow needle is a coiled needle. - View Dependent Claims (12, 13)
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14. A pressure sensing lead, comprising:
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an elongated implantable lead body having proximal and distal ends; a pressure sensor means for sensing pressure adjacent the distal end of said lead body, said pressure sensor means comprising a hollow needle extendable from the distal end of said lead; a coiled needle, mounted to said distal end of said lead body, around said hollow needle. - View Dependent Claims (15, 16, 17)
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Specification