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US5989274A Expired / Lapsed US ⏱️ 0.0 years remaining

Methods and devices for improving blood flow to a heart of a patient

Assignee: Ethicon Endo Surgery Inc

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Filing: 1996-12-20

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Granted: 1999-11-23

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Expires: 2016-12-20

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Abstract

Abstract One device in accordance with the present invention includes a surgical device for creating channels in tissue of a patient. The device includes a catheter defining a lumen and a transducer assembly carried by the catheter along a lengthwise dimension of the catheter. An end effector is operatively coupled to the transducer assembly and extends distally relative to the transducer assembly. The end effector has a vibrating channel-forming tip wherein the channel-forming tip is adapted to create channels in the heart of a patient. A method in accordance with the present invention includes the steps of inserting an end effector having a tip into a patient, placing the tip of the end effector in direct contact with a surface of the heart, energizing the end effector to cause the tip to vibrate, piercing through the surface of the heart with the tip to create a channel, and removing the end effector.

Inventors

👤 Thomas W. Davison
👤 Stephen DiMatteo

Bibliographic Details

Application Number —

Jurisdiction US

Data Source google_patents

Last Synchronized 2026-10-25 10:46

CPC Classifications

A; A61; A61B; A61B17/00; A61B17/32; A61B17/320068; A61B17/00234; A61B2017/00238; A61B2017/00243; A61B2017/00247; A61B2017/320069; A61B2017/32007; A61B2017/320071; A61B2017/320072; A61B2017/320073; A61B2017/320089; A61B18/00; A61B2018/00315; A61B2018/00345; A61B2018/00351; A61B2018/00392

Claims Analysis

Total Claims: 8

Claim 1

Independent Claim 97 words

A method of improving blood flow in a heart of a patient comprising the steps of: inserting a catheter in a cardiovascular system of the patient; advancing the catheter through the cardiovascular system until it is positioned in a left ventricle of the heart of the patient; vibrating a distal end of an acoustic assembly at an ultrasonic frequency; contacting the heart with the distal end of the acoustic assembly to create a channel of a selected depth in the inner surface of the heart; and withdrawing distal the end of the acoustic assembly from the heart.

Claim 2

Independent Claim 97 words

Claim 3

Dependent Claim 23 words

The method of claim 1 further repeating the steps of advancing, contacting and withdrawing to form a plurality of channels in the heart.

Claim 4

Independent Claim 87 words

A method of improving the blood flow to a heart of a patient comprising the steps of: providing a catheter carrying an end effector having a distal end; vibrating the distal end of the end effector at a selected frequency; contacting the distal end of the end effector with a ventricular wall of a heart; advancing the distal end of the end effector into the ventricle wall; creating a channel in the ventricular wall with the distal end; and removing the end effector from the ventricle wall.

Claim 5

Independent Claim 87 words

Claim 6

Dependent Claim 31 words

A method of claim 3 wherein the ventricular wall has an outer surface and an inner surface, and wherein the channel starts at the inner wall and extends into the myocardium.

Claim 7

Dependent Claim 15 words

The method of claim 3 wherein the frequency is between 20 kHz and 100 kHz.

Claim 8

Dependent Claim 22 words

The method of claim 1 wherein the step of forming a channel is accomplished without synchronizing to a heartbeat of a patient.

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USPTO Annuity & Maintenance Windows

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2002-11-22	2003-05-24	2003-11-23	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2006-11-22	2007-05-24	2007-11-23	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2010-11-22	2011-05-24	2011-11-23	$7700.00	Window Closed / Lapsed

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