Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
198 words
A medical instrument for the percutaneous introduction of an interventional device comprising: a valve housing having a proximal opening for providing an entrance point for the introduction of an interventional device, and a central chamber communicating with an opposite distal opening; and a valve comprising a one-piece seal means located within said central chamber and having a general disk-shape with opposed first and second surfaces, a central region having a pin hole or slit extending between said surfaces and a peripheral region adapted to be coupled in a sealing relation with said central chamber for normally sealing the flow of blood or air at ambient air and blood pressures encountered in actual use, wherein said first and second surfaces are generally concave and provide a central area with a thickness reduced from the periphery thereof, each of said concave surfaces further comprising a pair of convex cusp surfaces, each having intersecting edges extending from the periphery to the central region of each face of said seal means, whereby said seal means receives and seals around the periphery of an interventional device introduced into said entrance point through said pin hole or slit and out said opposite distal opening.
Claim 2
Dependent Claim
198 words
A medical instrument for the percutaneous introduction of an interventional device comprising: a valve housing having a proximal opening for providing an entrance point for the introduction of an interventional device, and a central chamber communicating with an opposite distal opening; and a valve comprising a one-piece seal means located within said central chamber and having a general disk-shape with opposed first and second surfaces, a central region having a pin hole or slit extending between said surfaces and a peripheral region adapted to be coupled in a sealing relation with said central chamber for normally sealing the flow of blood or air at ambient air and blood pressures encountered in actual use, wherein said first and second surfaces are generally concave and provide a central area with a thickness reduced from the periphery thereof, each of said concave surfaces further comprising a pair of convex cusp surfaces, each having intersecting edges extending from the periphery to the central region of each face of said seal means, whereby said seal means receives and seals around the periphery of an interventional device introduced into said entrance point through said pin hole or slit and out said opposite distal opening.
Claim 3
Dependent Claim
182 words
A percutaneous catheter introducer with hemostasis valve comprising: a longitudinally extending valve housing having a proximal opening for providing an entrance point for the introduction of an interventional device, and a central longitudinal chamber communicating with an opposite distal opening; an elongated sheath member having proximal and distal ends and a lumen extending therebetween, said proximal end coupled with said distal opening of said valve housing; and a one-piece seal means stationarily located within said central longitudinal chamber and having a general disk-shape with opposed first and second surfaces, a central region and a peripheral region adapted to be coupled in a sealing relation with said central longitudinal chamber for normally sealing the flow of blood or air at ambient air and blood pressures encountered in actual use, wherein said first and second surfaces are generally concave and provide a central area with a thickness reduced from the periphery thereof, each of said concave surfaces further comprising a pair of convex cusp surfaces, each having intersecting edges extending from the periphery to the central region of each face of said seal means.
Claim 4
Dependent Claim
182 words
A percutaneous catheter introducer with hemostasis valve comprising: a longitudinally extending valve housing having a proximal opening for providing an entrance point for the introduction of an interventional device, and a central longitudinal chamber communicating with an opposite distal opening; an elongated sheath member having proximal and distal ends and a lumen extending therebetween, said proximal end coupled with said distal opening of said valve housing; and a one-piece seal means stationarily located within said central longitudinal chamber and having a general disk-shape with opposed first and second surfaces, a central region and a peripheral region adapted to be coupled in a sealing relation with said central longitudinal chamber for normally sealing the flow of blood or air at ambient air and blood pressures encountered in actual use, wherein said first and second surfaces are generally concave and provide a central area with a thickness reduced from the periphery thereof, each of said concave surfaces further comprising a pair of convex cusp surfaces, each having intersecting edges extending from the periphery to the central region of each face of said seal means.