US5378238A — Innerless dilatation catheter with balloon stretc…

Claim 1

Independent Claim 150 words

A balloon catheter assembly comprising: a guide wire; a shaft having a proximal end, a distal end, and a lumen which extends between the proximal end and the distal end, the guide wire extending through the lumen; a balloon carried at the distal end of the shaft, the balloon having an interior which is in fluid communication with the lumen to permit inflation and deflation of the balloon; a lumen extension through the interior of the balloon to provide a passage for the guide wire to extend through the balloon; a manual valve actuator mounted at the proximal end of said catheter; a valve assembly connected to said lumen extension; a core wire connected between said valve actuator and said valve assembly; and, said valve assembly including seal apparatus responsive to movement of said actuator for blocking fluid flow through the lumen extension during inflation and deflation of the balloon.

Claim 2

Dependent Claim 150 words

A balloon catheter assembly comprising: a guide wire; a shaft having a proximal end, a distal end, and a lumen which extends between the proximal end and the distal end, the guide wire extending through the lumen; a balloon carried at the distal end of the shaft, the balloon having an interior which is in fluid communication with the lumen to permit inflation and deflation of the balloon; a lumen extension through the interior of the balloon to provide a passage for the guide wire to extend through the balloon; a manual valve actuator mounted at the proximal end of said catheter; a valve assembly connected to said lumen extension; a core wire connected between said valve actuator and said valve assembly; and, said valve assembly including seal apparatus responsive to movement of said actuator for blocking fluid flow through the lumen extension during inflation and deflation of the balloon.

Claim 3

Dependent Claim 66 words

The balloon catheter of claim 1 wherein the valve assembly comprises a flexible tube including a seal positioned within the interior of the balloon which stretches as said actuator is moved, said flexible tube having an inner surface which defines a portion of the lumen extension and which engages the guide wire to block fluid flow through the lumen extension when said flexible tube is stretched.

Claim 4

Dependent Claim 43 words

The balloon catheter of claim 2 wherein the lumen extension includes a proximal portion and a distal portion, the proximal portion being connected to the core wire and in spaced relation to the distal portion connected to a distal end of the balloon.

Claim 5

Dependent Claim 27 words

The balloon catheter of claim 3 wherein the flexible seal is mounted to and extends between the proximal portion and the distal portion of the lumen extension.

Claim 6

Dependent Claim 39 words

The balloon catheter of claim 1, 2, 3 or 4 wherein the valve assembly further comprises a shaft seal connected to and selectively moveable by said actuator for selectively sealing the shaft lumen from the interior of the balloon.

Claim 7

Dependent Claim 125 words

A balloon catheter assembly comprising: an inflatable balloon; a shaft which carries the inflatable balloon at a distal end of the shaft, the shaft having a lumen therethrough and the lumen being in fluid communication with an interior of the balloon for inflation and deflation of the balloon through the lumen; a lumen extension through the balloon, the lumen extension being in fluid communication with the lumen; a guide wire movably extending through the lumen and the lumen extension; a valve assembly located proximate the lumen extension for selectively limiting fluid flow through the lumen extension during the inflation and deflation of the balloon; a valve assembly actuator located proximate the valve assembly; and a core wire connected between the actuator and the valve assembly.

Claim 8

Dependent Claim 125 words

A balloon catheter assembly comprising: an inflatable balloon; a shaft which carries the inflatable balloon at a distal end of the shaft, the shaft having a lumen therethrough and the lumen being in fluid communication with an interior of the balloon for inflation and deflation of the balloon through the lumen; a lumen extension through the balloon, the lumen extension being in fluid communication with the lumen; a guide wire movably extending through the lumen and the lumen extension; a valve assembly located proximate the lumen extension for selectively limiting fluid flow through the lumen extension during the inflation and deflation of the balloon; a valve assembly actuator located proximate the valve assembly; and a core wire connected between the actuator and the valve assembly.

Claim 9

Dependent Claim 27 words

The balloon catheter assembly of claim 6 wherein the valve assembly comprises resilient means within the lumen extension which surrounds the guide wire within the lumen extension.

Claim 10

Dependent Claim 41 words

The balloon catheter assembly of claim 7 wherein the lumen extension includes a pair of tubes in spaced relation, the resilient means comprising a flexible ring generally coaxial with the lumen extension and spanning the space between the pair of tubes.

Claim 11

Dependent Claim 31 words

The balloon catheter assembly of claim 8 wherein the flexible ring is responsive to movement of the actuator to decrease its inner diameter in the space between the pair of tubes.

Claim 12

Dependent Claim 77 words

In a catheter having a proximal end and a distal end and having a central lumen adapted to receive a concentric guide dement, the improvement comprising: (a) a valve near said distal end of said catheter for sealing said central lumen against said concentric guide dement; and (b) a mechanical actuator located near said proximal end of said catheter and coupled to said valve such that actuation of said actuator causes opening and closing of said valve.

Claim 13

Dependent Claim 77 words

In a catheter having a proximal end and a distal end and having a central lumen adapted to receive a concentric guide dement, the improvement comprising: (a) a valve near said distal end of said catheter for sealing said central lumen against said concentric guide dement; and (b) a mechanical actuator located near said proximal end of said catheter and coupled to said valve such that actuation of said actuator causes opening and closing of said valve.

Claim 14

Dependent Claim 85 words

An intravascular device, comprising: (a) an elongate shaft with a lumen extending therethrough, the lumen adapted to at least partially slidably receive a guide member; (b) a deformable sealing member fixed to the distal end of the elongate shaft; and (c) a mechanical actuating member coextending with the elongate shaft, the distal end of the actuating member operatively connected to the sealing member such that when the actuating member is actuated, the sealing member engages a fluid seal between the lumen and the guide member.

Claim 15

Dependent Claim 85 words

An intravascular device, comprising: (a) an elongate shaft with a lumen extending therethrough, the lumen adapted to at least partially slidably receive a guide member; (b) a deformable sealing member fixed to the distal end of the elongate shaft; and (c) a mechanical actuating member coextending with the elongate shaft, the distal end of the actuating member operatively connected to the sealing member such that when the actuating member is actuated, the sealing member engages a fluid seal between the lumen and the guide member.

Claim 16

Dependent Claim 13 words

The intravascular device of claim 11, wherein: the deformable sealing member is tubular.

Claim 17

Dependent Claim 27 words

The intravascular device of claim 11, further comprising: an inflatable balloon connected to the distal end of the elongate shaft and in fluid communication with the lumen.

Claim 18

Dependent Claim 25 words

The intravascular device of claim 13, wherein: the lumen facilitates the transport of inflation fluid thereby allowing the balloon to be selectively inflated and deflated.

Claim 19

Dependent Claim 18 words

The intravascular device of claim 14, further including: a fluid path defined by the lumen and the balloon.

Claim 20

Dependent Claim 21 words

The intravascular device of claim 15, wherein: the fluid path is terminated distally when the sealing member engages the guide member.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1998-01-02	1998-07-04	1999-01-03	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2002-01-02	2002-07-04	2003-01-03	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2006-01-02	2006-07-04	2007-01-03	$7700.00	Window Closed / Lapsed

Innerless dilatation catheter with balloon stretch or manual valve

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