Chronically implantable blood vessel cuff with sensor
First Claim
1. A chronically implantable sensor device having tubular assembly with a first and second end and having a substantially circular passageway extending fully there through from said first to said second ends forming a passageway through said tubular assembly such that the internal surface of the passageway is coextensive with the external surface of the tubular assembly and wherein a slit extends along the axial length of the passageway from one opening of the passageway at said first end to another opening end of the passageway at said second end thus, said slit providing an access opening from said first opening end to said second opening end through said passageway wall and wherein on the interior surface of the passageway in said device, opposite from said slit, the interior surface has a substantially flat area into which a sensor is mounted.
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Accused Products
Abstract
A system for chronically measuring a physiologic parameter by an implantable device which has several forms is described. At its core a fixture for holding on to a blood vessel and forcing a sensor against a surface of the vessel is taught. Numerous adaptations and uses with various sensors are described.
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Citations
43 Claims
- 1. A chronically implantable sensor device having tubular assembly with a first and second end and having a substantially circular passageway extending fully there through from said first to said second ends forming a passageway through said tubular assembly such that the internal surface of the passageway is coextensive with the external surface of the tubular assembly and wherein a slit extends along the axial length of the passageway from one opening of the passageway at said first end to another opening end of the passageway at said second end thus, said slit providing an access opening from said first opening end to said second opening end through said passageway wall and wherein on the interior surface of the passageway in said device, opposite from said slit, the interior surface has a substantially flat area into which a sensor is mounted.
- 2. An implantable sensor fixture for chronic implant into a living body for chronically sensing physiologic measurement values within vessels of said body comprising a hard and substantially round interior tunnel shaped passageway for surrounding such a body vessel, having an interior space with a flat side and an slit side separate from said flat side, and having a sensor mounted into said interior of said tunnel for sensing said physiologic measurement values from within said vessel, and wherein a diameter of the interior tunnel shaped passage is measured as if said interior tunnel shaped passageway were closed across said slit side is slightly smaller than the normal external diameter of said vessel, thus causing said vessel to bulge slightly into an opening formed by said slit.
- 4. A fixture as set forth in clam 2 wherein said sensor is a pressure sensor.
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12. An implantable medical device comprising
a tube having a slit on one side thereof and a flat surface on a side other than said one side, a sensor mounted for contact with a blood vessel to be held in place within said tube, circuit means for reading signals produced by said sensor.
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14. An implantable medical device comprising a tube constructed of materials substantially inflexible relative to blood vessel flexibility, and having a slit along one side thereof and a sensor mounted internally to said tube on a side other than said one side.
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40. A sensor assembly for long term monitoring of conditions in a blood vessel of a living body comprising a rigid fixture for holding a blood vessel and a sensor capsule mated to said fixture.
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41. A sensor assembly for long term monitoring of a condition in a blood vessel of a living body comprising a rigid fixture for holding a blood vessel having an interior surface for contacting said blood vessel outer wall, and having a sensor mounted on said interior surface so as to be in operative contact with said external wall of said blood vessel when in use.
- 42. A chronically implantable medical device comprising a fixture comprising a tube having two open ends and a slit opening through which to pass a blood vessel, and having mounted therein an optical sensor mounted so as to face an inner surface of said tube and to thus be in contact with said blood vessel, wherein said optical sensor comprises a light transmission means for transmitting light of more than one wavelength and a light sensitive means for measuring light returned.
Specification