Phyllis K Yuen

US Patent:

20090216180, Aug 27, 2009

Filed:

Dec 1, 2008

Appl. No.:

12/325797

Inventors:

Kee Lee - Newark CA, US
Phyllis Yuen - Fremont CA, US
Darren Doud - San Jose CA, US

Assignee:

Fox Hollow Technologies, Inc. - Plymouth MN

International Classification:

A61B 17/22

US Classification:

604 22

Abstract:

A catheter is provided, which includes a cutting element having one or more raised elements. The cutting element has a cup-shaped surface at the distal end that may be smooth and continuous except for the raised elements.

US Patent:

20100312263, Dec 9, 2010

Filed:

Apr 27, 2010

Appl. No.:

12/768281

Inventors:

John Robert Moberg - Elk River MN, US
Alex Yang - San Francisco CA, US
Christopher B. Brodeur - Plymouth MN, US
William Joseph Whealon - Chaska MN, US
Kee Lee - Newark CA, US
Phyllis Yuen - Fremont CA, US
Darren Doud - San Jose CA, US

Assignee:

FOX HOLLOW TECHNOLOGIES, INC. - Plymouth MN

International Classification:

A61B 17/22

US Classification:

606159

Abstract:

The present invention provides an atherectomy catheter which has a cutting element that is able to cut both soft tissue and hard tissue, and methods of cutting material from a blood vessel lumen using a rotating cutting element. The cutting element has a sharp cutting edge that surrounds a cup-shaped surface and at least one surface of abrasive material. The cup-shaped surface directs the cut material into a tissue chamber. The cutting edge and the cup-shaped surface together are well suited to cut and remove relatively soft tissue from the blood vessel. The abrasive material surface in combination with the cutting element is well suited to abrade and remove hard material from the blood vessel.

US Patent:

20120172655, Jul 5, 2012

Filed:

Jan 4, 2012

Appl. No.:

13/343617

Inventors:

Robert L. Campbell - Port Matilda PA, US
Keif Fitzgerald - San Jose CA, US
William James Harrison - Signal Mountain TN, US
Boris Leschinsky - Mahwah NJ, US
Thomas M. Mallison - State College PA, US
Mark W. McBride - Bellefonte PA, US
Adam Roslund - Monroeville PA, US
Daniel A. Walters - Rockaway Twp. NJ, US
Phyllis Yuen - Fremont CA, US

International Classification:

A61M 1/10
A61M 25/00

US Classification:

600 16

Abstract:

Disclosed herein are heart pumps that include a catheter assembly and that can be applied percutaneously. Some embodiments include a locking device that prevents components of the catheter assembly from being separated when in use. The catheter assembly can include an expandable tip. In some embodiments, the catheter assembly includes a housing having a wall structure, a portion of which can have a bulbuous shape or can be deformable. In other embodiments, the housing can be configured to reduce fluttering or deflection of the housing and/or to maintain a gap between the housing and an impeller blade disposed therein.

US Patent:

20120178986, Jul 12, 2012

Filed:

Jan 6, 2012

Appl. No.:

13/345597

Inventors:

Robert L. Campbell - Port Matilda PA, US
Jeremy J. Koncoski - Pennsylvania Furnace PA, US
Thomas M. Mallison - State College PA, US
Mark W. McBride - Bellefonte PA, US
Daniel Metrey - Blacksburg VA, US
Eric C. Myer - Spring Mills PA, US
Kevin J. Powell - Glen Gardner NJ, US
Adam Roslund - Monroeville PA, US
Daniel A. Walters - Rockaway Twp. NJ, US
William James Repka - Parsippany-Troy Hills NJ, US
Phyllis Yuen - Fremont CA, US

International Classification:

A61M 1/12

US Classification:

600 16

Abstract:

Disclosed herein are heart pumps that can include a catheter body and an impeller coupled with a distal end of the catheter body. The impeller can include a tip that is resealable or that includes a resealable member. The heart pump can also include a diffuser disposed between the distal end of the catheter body and the impeller, wherein the diffuser includes a flow directing surface.

US Patent:

20130303830, Nov 14, 2013

Filed:

Mar 13, 2013

Appl. No.:

13/802570

Inventors:

Phyllis Yuen - Fremont CA, US
Michael R. Butler - Dublin CA, US

Assignee:

THORATEC CORPORATION - Pleasanton CA

International Classification:

A61M 1/10

US Classification:

600 16, 416223 B, 416142

Abstract:

An impeller for a pump is disclosed herein. The impeller can include a hub having a fixed end and a free end. The impeller can also have a plurality of blades supported by the hub. Each blade can have a fixed end coupled to the hub and a free end. The impeller can have a stored configuration and a deployed configuration, the blades in the deployed configuration extending away from the hub, and the blades in the stored configuration being compressed against the hub.

US Patent:

20130303969, Nov 14, 2013

Filed:

Mar 13, 2013

Appl. No.:

13/801833

Inventors:

Keif M. Fitzgerald - San Jose CA, US
Veronica J. Neiman - Union City CA, US
Phyllis Yuen - Fremont CA, US

Assignee:

THORATEC CORPORATION - Pleasanton CA

International Classification:

A61M 1/10

US Classification:

604 9

Abstract:

A catheter pump assembly is provided that includes an elongate polymeric catheter body, a cannula, and a tubular interface. The elongate polymeric catheter body has a proximal end and a distal end. The cannula has an expandable portion disposed distally of the elongate polymeric catheter body. The cannula can also have another tubular portion that is proximal to the distal portion. The tubular interface has an outer surface configured to be joined to the tubular portion of the cannula and an inner surface. The inner surface is disposed over the distal end of the elongate polymeric catheter body. The tubular interface has a plurality of transverse channels extending outward from the inner surface of the tubular interface. An outer surface of the elongate polymeric catheter body projects into the transverse channels to mechanically integrate the elongate polymeric catheter body with the tubular interface.

US Patent:

20220280770, Sep 8, 2022

Filed:

May 11, 2022

Appl. No.:

17/741794

Inventors:

- St. Paul MN, US
Phyllis Yuen - Fremont CA, US
Michael R. Butler - Dublin CA, US

International Classification:

A61M 60/40
A61M 60/148
A61M 60/205
F04D 29/18

Abstract:

An impeller for a pump is disclosed herein. The impeller can include a hub having a fixed end and a free end. The impeller can also have a plurality of blades supported by the hub. Each blade can have a fixed end coupled to the hub and a free end. The impeller can have a stored configuration and a deployed configuration, the blades in the deployed configuration extending away from the hub, and the blades in the stored configuration being compressed against the hub.

US Patent:

20230096277, Mar 30, 2023

Filed:

Aug 30, 2022

Appl. No.:

17/823389

Inventors:

- St. Paul MN, US
Ted Y Su - Sunnyvale CA, US
Phyllis K. Yuen - Fremont CA, US
Stephen D. Pacetti - San Jose CA, US

International Classification:

A61M 60/414
A61M 60/13
A61M 60/174
A61M 60/216
F16C 19/18

Abstract:

A catheter pump system includes a shaft assembly, an impeller coupled to a distal portion of the shaft assembly, and a motor assembly coupled to a proximal portion of the shaft assembly. The motor assembly is configured to drive the impeller via the shaft assembly. The motor assembly includes a rotor, a stator disposed radially outward of the rotor, and a rotor chamber disposed radially between the stator and the rotor. The rotor chamber at least partially encloses the rotor. The rotor chamber is at least partially filled with a lubricant to reduce a friction of the rotor during rotation thereof.