US 8,945,160 B2Granted

Apparatus and methods for treating obstructions within body lumens

AssigneeHotspur Technologies, Inc.

InventorsJeffrey A. Krolik, Gwendolyn Watanabe, Juan Domingo, Ray Betelia, James H. Dreher, Daryush Mirzaee, Lucas Fernandez

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Abstract

An apparatus is provided that is operable in different modes to perform various functions for treating a body lumen. The apparatus includes a shaft including proximal and distal ends, a lumen extending therebetween, and a balloon on the distal end. The apparatus includes a valve on the distal end that selectively opens or closes an outlet communicating with the lumen. With the valve open, fluid introduced into the lumen exits the outlet into a body lumen. With the valve closed, fluid introduced into the lumen expands the balloon. The valve may be biased to be closed, e.g., by a spring element disposed within the balloon. Optionally, the apparatus also includes an actuator for expanding a helical member within the balloon interior, e.g., either before or after expanding the balloon, such that the helical member and balloon may adopt an expanded helical shape for removing material within a body lumen.

Claims13

Dependent claims

A method for treating a body lumen of a patient using a balloon apparatus comprising an outer member including a first lumen extending between proximal and distal ends thereof, an inner member having a proximal end and a distal end slidable within the first lumen, an inner member distal tip, wherein the inner member distal tip is softened, and a balloon comprising a proximal end attached to the outer member distal end, a distal end including an outlet and an interior communicating with the first lumen and the outlet, and a helical member coupled between the outer member and the inner member, wherein the inner member comprises a second lumen that is sized to slideably receive a guidewire that may be delivered into the body lumen, the method comprising, in combination:

introducing the distal end of the outer member into a body lumen with the balloon in a contracted condition and the inner member in a proximal position such that the outlet is substantially sealed by a sealing member on the inner member distal end;
directing an actuator on a proximal end of the balloon apparatus to move the inner member to a distal position consequently directing the sealing member distally to open the outlet;
delivering a first fluid through the first lumen such that the first fluid passes through the balloon interior and exits the open outlet into the body lumen;
directing the inner member towards the proximal position to substantially seal the outlet with the sealing member, a spring element biasing the inner member to enhance the sealing member sealing the outlet;
and
delivering a second fluid through the first lumen with the outlet substantially sealed, thereby expanding the balloon from the contracted condition to an enlarged condition.

3 more elements

A method for treating a body lumen of a patient using an apparatus comprising an outer tubular member comprising a first lumen extending between proximal and distal ends thereof, and a balloon comprising a proximal end attached to the outer tubular member distal end, a distal end including an outlet and an interior communicating with the first lumen and the outlet, and a helical member coupled between the outer tubular member and an elongate member, the method comprising, in combination:

introducing a distal end of the elongate member into a patient's body until the distal end is disposed within a body lumen, the elongate member comprising a sealing member on the distal end;
advancing the distal end of the outer member over the elongate member with the balloon in a contracted condition until the balloon outlet is disposed adjacent the sealing member;
coupling an actuator on the outer member proximal end to the elongate member;
directing the actuator to a first position wherein the sealing member substantially seals the outlet;
delivering fluid into the first lumen with the outlet substantially sealed, thereby expanding the balloon to an enlarged condition;
directing the actuator to a second position wherein the sealing member is spaced from the outlet;
delivering fluid into the first lumen with the sealing member spaced from the outlet, thereby delivering the fluid from the outlet into the body lumen;
and
directing the balloon to an expanded helical shape within the body lumen wherein the expanded helical shape includes a first helix and a second helix, the first helix and the second helix having different diameters;
directing the balloon along a wall of the body lumen in the expanded helical shape to remove material from the wall of the body lumen;
and collapsing the balloon around the helical member.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/843,004Filed 23 Jul 2010 · continuation in part
Priority: 3 Jul 2008
Published: US 2011/0125132 A126 May 2011
Granted: 3 Feb 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification27 codes

A61M 25/10185
Means for controlling or monitoring inflation or deflation: valves
A61B 17/22032
Gripping instruments, e.g. forceps, for removing or smashing calculi: having inflatable gripping elements
A61B 17/221
Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones;…
A61B 17/320725
Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions: with radially expandable…

Family

Application61/078,330Us provisional application · filed 3 Jul 2008
Application61/153,620Us provisional application · filed 18 Feb 2009
Application61/214,667Us provisional application · filed 27 Apr 2009
Application61/215,732Us provisional application · filed 8 May 2009
Application12/497,135Parent of this continuation-in-part · filed 2 Jul 2009
Application61/271,627Us provisional application · filed 23 Jul 2009
Application61/283,035Us provisional application · filed 25 Nov 2009
Application61/342,755Us provisional application · filed 19 Apr 2010
Application61/397,854Us provisional application · filed 17 Jun 2010
US 2011/0125132 A1Pre-grant publication · published 26 May 2011
US 8,043,313 B2Parent of this continuation-in-part
US 2010/0036410 A1Published application
US 8,945,160 B2This patent

From the US filing history. Foreign family members aren’t listed.