Patent US6321109B2 successfully refreshed from Google Patents.

US6321109B2 Expired / Lapsed US ⏱️ 0.0 years remaining

Catheter based surgery

Assignee: Biosense Webster Inc

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Filing: 1997-02-14

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Granted: 2001-11-20

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Expires: 2017-02-14

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Abstract

Abstract A method of excavating tissue in the body, including bringing a catheter ( 60 ) to a location, injecting microbubbles ( 84 ) at the location and causing cavitation of tissue ( 76 ) at the location using ultrasound. Preferably, the microbubbles ( 84 ) are injected directly into the tissue, such as by using a hollow needle ( 62 ). Alternatively, microbubbles ( 84 ) are injected into the vascular bed of the tissue at the location, so that the capillaries ( 86 ) are infused with microbubbles ( 84 ).

Inventors

👤 Shlomo Ben-Haim
👤 Maier Fenster

Bibliographic Details

Application Number —

Jurisdiction US

Data Source google_patents

Last Synchronized 2026-11-09 23:17

CPC Classifications

A; A61; A61B; A61B5/00; A61B5/68; A61B5/6846; A61B5/6847; A61B5/6852; A61B5/6856; A61B17/00; A61B17/22; A61B17/22004; A61B17/22012; A61B17/34; A61B17/3403; A61B18/00; A61B18/18; A61B18/20; A61B5/06; A61B5/24; A61B5/25; A61B5/279; A61B5/28; A61B5/283; A61B5/287; A61B5/6853; A61B5/6858; A61B8/00; A61B8/08; A61B8/0833; A61B8/0841; A61N; A61N5/00; A61N5/06; A61N5/0601; A61N7/00; A61N7/02; A61B10/00; A61B10/02; A61B17/00234; A61B2017/00238; A61B2017/00243; A61B2017/00247; A61B2017/22005; A61B2017/22007; A61B2017/22008; A61B2018/00315; A61B2018/00345; A61B2018/00351; A61B2018/00392; A61B34/00; A61B34/20; A61B2034/2046; A61B2034/2051; A61B90/00; A61B90/36; A61B90/37; A61B2090/378; A61B2090/3782; A61B90/39; A61B2090/3954; A61B2090/3958; A61B5/061; A61B5/062; A61B5/063; A61N5/10; A61N5/1048; A61N5/1064

Claims Analysis

Total Claims: 8

Claim 1

Independent Claim 64 words

An excavating probe for use in a generated magnetic field comprising: (a) a probe body having a distal tip; (b) a position sensor near the distal tip, the position sensor being a magnetic field receiver which determines the position of the tip by sensing the instantaneous position of the tip from a generated magnetic field; and (c) a source of microbubbles at the tip.

Claim 2

Dependent Claim 64 words

Claim 3

Dependent Claim 25 words

A probe according to claim 1 , wherein the source of microbubbles comprises a hollow needle which injects the microbubbles into tissue adjacent the tip.

Claim 4

Dependent Claim 17 words

A probe according to claim 2 , comprising an ultrasonic imager which views regions adjacent said tip.

Claim 5

Dependent Claim 25 words

A probe according to claim 2 , wherein the position sensor comprises an orientation sensor which determines the orientation of the tip of the probe.

Claim 6

Independent Claim 85 words

A method of excavating within a generated magnetic field comprising: (a) bringing a probe to a location, the probe comprising a probe body having a distal tip, a position sensor near the distal tip wherein the position sensor is a magnetic field receiver which determines the position of the tip by sensing the instantaneous position of the tip from a generated magnetic field and a source of microbubbles; (b) injecting microbubbles at the location; and (c) causing cavitation of tissue at the location using ultrasound.

Claim 7

Independent Claim 85 words

Claim 8

Dependent Claim 18 words

A method according to claim 5 , wherein (b) comprises, injecting microbubbles directly into tissue at the location.

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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)	2004-11-19	2005-05-21	2005-11-20	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2008-11-19	2009-05-21	2009-11-20	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2012-11-19	2013-05-21	2013-11-20	$7700.00	Window Closed / Lapsed

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