John W Kaufman

US Patent:

20200390536, Dec 17, 2020

Filed:

Jun 22, 2020

Appl. No.:

16/907816

Inventors:

- Tempe AZ, US
Andrzej J. Chanduszko - Chandler AZ, US
John D. McDermott - Coto de Caza CA, US
John A. Kaufman - Lake Oswego OR, US

Assignee:

C.R. Bard, Inc. - Tempe AZ

International Classification:

A61F 2/01
A61B 90/00

Abstract:

A removable blood clot filter includes a number of locator members and anchor members disposed radially and extending angularly downward from a hub. The locator members include a number of linear portions having distinct axes configured to place a tip portion approximately parallel to the walls of a blood vessel when implanted to apply sufficient force to the vessel walls to position the filter near the vessel centerline. The anchor members each include a hook configured to penetrate the vessel wall to prevent longitudinal movement due to blood flow. The hooks may have a cross section sized to allow for a larger radius of curvature under strain so that the filter can be removed without damaging the vessel wall.

US Patent:

20180243072, Aug 30, 2018

Filed:

Jan 22, 2018

Appl. No.:

15/877159

Inventors:

- Tempe AZ, US
Andrzej J. Chanduszko - Chandler AZ, US
John D. McDermott - Coto de Caza CA, US
John A. Kaufman - Lake Oswego OR, US

International Classification:

A61F 2/01
A61B 90/00

Abstract:

A removable blood clot filter includes a number of locator members and anchor members disposed radially and extending angularly downward from a hub. The locator members include a number of linear portions having distinct axes configured to place a tip portion approximately parallel to the walls of a blood vessel when implanted to apply sufficient force to the vessel walls to position the filter near the vessel centerline. The anchor members each include a hook configured to penetrate the vessel wall to prevent longitudinal movement due to blood flow. The hooks may have a cross section sized to allow for a larger radius of curvature under strain so that the filter can be removed without damaging the vessel wall.