US6283947B1 — Local drug delivery injection catheter

Claim 1

Independent Claim 128 words

A catheter for delivering a drug to a location within a patient, comprising: a first tube; a second tube extending from a proximal end to a distal end along an axis; a first lumen provided in said first tube for receiving said drug, said first lumen extending from the proximal end of said first tube to an injection port; a preferential bending point on said first tube; a balloon lumen provided in said second tube; and a balloon coupled to the balloon lumen such that inflation of the balloon bends the first tube at the preferential bending point, thereby angularly pushing said injection port away from the axis of the second tube to change an angle formed between said injection port and said axis of the second tube.

Claim 2

Dependent Claim 128 words

A catheter for delivering a drug to a location within a patient, comprising: a first tube; a second tube extending from a proximal end to a distal end along an axis; a first lumen provided in said first tube for receiving said drug, said first lumen extending from the proximal end of said first tube to an injection port; a preferential bending point on said first tube; a balloon lumen provided in said second tube; and a balloon coupled to the balloon lumen such that inflation of the balloon bends the first tube at the preferential bending point, thereby angularly pushing said injection port away from the axis of the second tube to change an angle formed between said injection port and said axis of the second tube.

Claim 3

Dependent Claim 11 words

Catheter of claim 1 wherein said injection port comprises a needle.

Claim 4

Dependent Claim 10 words

Catheter of claim 1 wherein said injection port is radiopaque.

Claim 5

Dependent Claim 13 words

Catheter of claim 1 wherein a radiopaque marker is provided on said balloon.

Claim 6

Dependent Claim 17 words

Catheter of claim 1 wherein a radiopaque marker is formed on said catheter proximate to said balloon.

Claim 7

Dependent Claim 32 words

Catheter of claim 1 wherein a radiopaque marker is provided on said first tube at said preferential bending point where said injection port bends away from said axis of said second tube.

Claim 8

Dependent Claim 14 words

Catheter of claim 1 further comprising a stiffening mandrel extending through said first lumen.

Claim 9

Dependent Claim 17 words

Catheter of claim 1 further comprising a stiffening mandrel extending along the exterior of said first tube.

Claim 10

Dependent Claim 11 words

Catheter of claim 1 wherein said balloon is a helical-shaped balloon.

Claim 11

Dependent Claim 25 words

Catheter of claim 1 wherein said balloon has wide and narrow regions to permit blood to perfuse past said balloon when said balloon is inflated.

Claim 12

Dependent Claim 22 words

Catheter of claim 1 , further comprising a guide wire lumen having an axis parallel to the axis of the second tube.

Claim 13

Dependent Claim 111 words

A catheter for delivering a drug to a location within a patient comprising: a first tube; a second tube extending from a proximal end to a distal end along an axis; a first lumen provided in said first tube for receiving said drug, said first lumen extending from the proximal end of said first tube to an injection port; a preferential bending point on said first tube; a balloon lumen provided in said second tube; and a balloon coupled to the balloon lumen such that inflation of the balloon bends the first tube at the preferential bending point, thereby rotating said injection port away from the axis of the second tube.

Claim 14

Dependent Claim 111 words

A catheter for delivering a drug to a location within a patient comprising: a first tube; a second tube extending from a proximal end to a distal end along an axis; a first lumen provided in said first tube for receiving said drug, said first lumen extending from the proximal end of said first tube to an injection port; a preferential bending point on said first tube; a balloon lumen provided in said second tube; and a balloon coupled to the balloon lumen such that inflation of the balloon bends the first tube at the preferential bending point, thereby rotating said injection port away from the axis of the second tube.

Claim 15

Dependent Claim 22 words

Catheter of claim 12 , further comprising a guide wire lumen having an axis parallel to the axis of the second tube.

Claim 16

Dependent Claim 89 words

Method for delivering medication to a patient comprising the steps of: inserting a catheter into a patient, said catheter comprising a catheter body, a drug delivery lumen within the catheter body, and an injection port in communication with said drug delivery lumen; inflating a balloon to angularly push the injection port away from the catheter axis toward or into the patient's artery wall by bending said drug delivery lumen at a preferential bending point; and injecting medication into the patient through the drug delivery lumen and said injection port.

Claim 17

Dependent Claim 89 words

Method for delivering medication to a patient comprising the steps of: inserting a catheter into a patient, said catheter comprising a catheter body, a drug delivery lumen within the catheter body, and an injection port in communication with said drug delivery lumen; inflating a balloon to angularly push the injection port away from the catheter axis toward or into the patient's artery wall by bending said drug delivery lumen at a preferential bending point; and injecting medication into the patient through the drug delivery lumen and said injection port.

Claim 18

Dependent Claim 11 words

Method of claim 14 wherein said injection port is a needle.

Claim 19

Dependent Claim 32 words

Method of claim 14 further comprising the steps of: moving said injection port toward an angle parallel with the axis of said catheter after said step of injecting; and retracting said catheter.

Claim 20

Dependent Claim 124 words

A catheter for delivering a drug to a location within a patient, comprising: a guide wire lumen; a tube extending from a proximal end to a distal end along an axis of said guide wire lumen and having a first lumen for receiving said drug, said first lumen extending from the proximal end of said tube to an injection port; a preferential bending point on said tube; and a balloon for angularly pushing said injection port away from the axis of the guide wire lumen by bending said tube at said preferential bending point, thereby changing an angle formed between said injection port and said axis of the guide wire lumen; said injection port being coupled to said tube at said preferential bending point.

Claim 21

Dependent Claim 124 words

A catheter for delivering a drug to a location within a patient, comprising: a guide wire lumen; a tube extending from a proximal end to a distal end along an axis of said guide wire lumen and having a first lumen for receiving said drug, said first lumen extending from the proximal end of said tube to an injection port; a preferential bending point on said tube; and a balloon for angularly pushing said injection port away from the axis of the guide wire lumen by bending said tube at said preferential bending point, thereby changing an angle formed between said injection port and said axis of the guide wire lumen; said injection port being coupled to said tube at said preferential bending point.

Claim 22

Dependent Claim 11 words

Catheter of claim 17 wherein said injection port comprises a needle.

Claim 23

Dependent Claim 13 words

Catheter of claim 17 further comprising a stiffening mandrel extending through said tube.

Claim 24

Dependent Claim 15 words

Catheter of claim 17 wherein a stiffening mandrel extends along an exterior of said tube.

Claim 25

Dependent Claim 107 words

A catheter for delivering a drug to a location within a patient, comprising: a guide wire lumen; a tube extending from a proximal end to a distal end along an axis of said guide wire lumen and having a first lumen for receiving said drug, said first lumen extending from the proximal end of said tube to an injection port; a preferential bending point on said tube; and an inflatable balloon for rotating said injection port away from the axis of the guide wire lumen by bending said tube at said preferential bending point; said injection port being coupled to said tube at said preferential bending point.

Claim 26

Dependent Claim 107 words

A catheter for delivering a drug to a location within a patient, comprising: a guide wire lumen; a tube extending from a proximal end to a distal end along an axis of said guide wire lumen and having a first lumen for receiving said drug, said first lumen extending from the proximal end of said tube to an injection port; a preferential bending point on said tube; and an inflatable balloon for rotating said injection port away from the axis of the guide wire lumen by bending said tube at said preferential bending point; said injection port being coupled to said tube at said preferential bending point.

Claim 27

Dependent Claim 11 words

Catheter of claim 21 wherein said injection port comprises a needle.

Claim 28

Dependent Claim 13 words

Catheter of claim 21 further comprising a stiffening mandrel extending through said tube.

Claim 29

Dependent Claim 15 words

Catheter of claim 21 wherein a stiffening mandrel extends along an exterior of said tube.

Claim 30

Dependent Claim 129 words

Method for delivering medication to a patient comprising the steps of: inserting a catheter into a patient, said catheter comprising a catheter body, a guide wire lumen having an axis, a tube, a drug delivery lumen within the tube, and an injection port in communication with said drug delivery lumen; angularly extending the injection port away from the axis of the guide wire lumen toward or into the patient's artery wall by inflating a balloon to bend said tube at a preferential bending point, said injection port being attached to said tube at said preferential bending point, to change an angle formed between said injection port and said axis of the guide wire lumen; and injecting medication into the patient through the drug delivery lumen and said injection port.

Claim 31

Dependent Claim 129 words

Method for delivering medication to a patient comprising the steps of: inserting a catheter into a patient, said catheter comprising a catheter body, a guide wire lumen having an axis, a tube, a drug delivery lumen within the tube, and an injection port in communication with said drug delivery lumen; angularly extending the injection port away from the axis of the guide wire lumen toward or into the patient's artery wall by inflating a balloon to bend said tube at a preferential bending point, said injection port being attached to said tube at said preferential bending point, to change an angle formed between said injection port and said axis of the guide wire lumen; and injecting medication into the patient through the drug delivery lumen and said injection port.

Claim 32

Dependent Claim 11 words

Method of claim 25 wherein said injection port comprises a needle.

Claim 33

Dependent Claim 35 words

Method of claim 25 , further comprising the steps of: moving said injection port toward an angle parallel with said axis of the guide wire lumen after said step of injecting; and retracting said catheter.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2004-09-03	2005-03-05	2005-09-04	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2008-09-03	2009-03-05	2009-09-04	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2012-09-03	2013-03-05	2013-09-04	$7700.00	Window Closed / Lapsed

Local drug delivery injection catheter

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