Cardiovascular catheter seal device

Claim 2

A cardiovascular catheter seal device comprising: A hollow rigid body whose interior walls define a chamber open at its proximal and distal ends for the passage of a catheter therethrough; within said chamber, a thin-walled elastomeric member whose innermost surface defines a lumen in communication with said openings so as to receive and pass said catheter, said member being secured within said body so as to prevent passage of blood through the chamber exteriorly of said lumen during catheterization; means to adjustably distend the innermost surface of said member radially inwardly to constrict said lumen, sealing the interface between said surface and a catheter received in the lumen against the passage of blood therealong; and catheter sheath attachment means adjacent the proximal end of said device said attachment means being a luer fitting.

Claim 3

A catheter seal device according to claim 1 which additionally comprises valving means to seal said chamber against the passage of blood therethrough absent said catheter.

Claim 4

A device according to claim 1 wherein said chamber diminishes in its lateral dimension progressively from a point adjacent the distal end to a point adjacent the proximal end thereof.

Claim 5

A cardiovascular catheter seal device comprising: A hollow rigid body whose interior walls define a chamber open at its proximal and distal ends for the passage of a catheter therethrough; within said chamber, a thin-walled elastomeric member whose innermost surface defines a lumen in communication with said openings so as to receive and pass said catheter, said member being secured within said body so as to prevent passage of blood through the chamber exteriorly of said lumen during catheterization: means to adjustably distend the innermost surface of said member radially inwardly to constrict said lumen, sealing the interface between said surface and a catheter received in the lumen against the passage of blood therealong; catheter sheath attachment means adjacent the proximal end of said device; and an additional opening adjacent the proximal end of said chamber in communication therewith at a point intermediate said attachment means and the proximal end of said member, and valving means associated with said additional opening to controllably permit ingress and egress of fluids therethrough and through the proximal end of said device when said interface is sealed.

Claim 6

A cardiovascular catheter seal device comprising: A hollow rigid body whose interior walls define a chamber open at its proximal and distal ends for the passage of a catheter therethrough; within said chamber, a thin-walled elastomeric member whose innermost surface defines a lumen in communication with said openings so as to receive and pass said catheter, said member being secured within said body so as to prevent passage of blood through the chamber exteriorly of said lumen during catheterization: means to adjustably distend the innermost surface of said member radially inwardly to constrict said lumen, sealing the interface between said surface and a catheter received in the lumen against the passage of blood therealong; catheter sheath attachment means adjacent the proximal end of said device; and an additional opening adjacent the proximal end of said chamber in communication therewith at a point intermediate said attachment means and the proximal end of said member, and valving means associated with said additional opening to controllably permit ingress and egress of fluids therethrough and through the proximal end of said device when said interface is sealed.

Claim 7

A cardiovascular catheter seal device comprising: a. a hollow rigid body whose interior walls define a chamber open at its proximal and distal ends for the passage of a catheter therethrough; b. within said chamber, a thin-walled elastomeric member whose innermost surface defines a lumen in communication with said openings so as to receive and pass said catheter, said member being secured within said body so as to prevent passage of blood through the chamber exteriorly of said lumen during catheterization; c. means to adjustably distend the innermost surface of said member inwardly to constrict said lumen, sealing the interface between said surface and a catheter received in the lumen against the passage of blood therealong; d. catheter sheath attachment means adjacent the proximal end of said device; and e. a catheter sheath affixed adjacent the proximal end of said body in registry with said lumen.

Claim 8

A cardiovascular catheter seal device comprising: a. a hollow rigid body whose interior walls define a chamber open at its proximal and distal ends for the passage of a catheter therethrough; b. within said chamber, a thin-walled elastomeric member whose innermost surface defines a lumen in communication with said openings so as to receive and pass said catheter, said member being secured within said body so as to prevent passage of blood through the chamber exteriorly of said lumen during catheterization; c. means to adjustably distend the innermost surface of said member inwardly to constrict said lumen, sealing the interface between said surface and a catheter received in the lumen against the passage of blood therealong; d. catheter sheath attachment means adjacent the proximal end of said device; and e. a catheter sheath affixed adjacent the proximal end of said body in registry with said lumen.

Claim 9

An assembly comprising the device of claim 5 and a catheter occupying the passageway defined by the sheath, proximal opening, lumen and distal opening of said device.

Claim 10

A device according to claim 5 wherein said elastomeric member is a toroidal bladder.

Claim 11

A device according to claim 7 wherein the means (c) permit adjustable distension of said bladder by the passage of an inflating fluid into it, said device having an additional opening adjacent the proximal end of said chamber in communication therewith at a point intermediate the proximal ends of said body and member, and valving means associated with said additional opening to controllably permit ingress and egress of fluids therethrough and through the proximal end of said device when said interface is sealed.

Claim 12

An assembly comprising a. a catheter seal device according to claim 8; and b. a catheter occupying the passageway defined by said sheath, proximal opening, lumen and distal opening.