Michael M Meehan

US Patent:

7458991, Dec 2, 2008

Filed:

Feb 8, 2002

Appl. No.:

10/071667

Inventors:

Kathy K. Wang - Suffern NY, US
Michael Meehan - Wanaque NJ, US

Assignee:

Howmedica Osteonics Corp. - Mahwah NJ

International Classification:

A61F 2/28

US Classification:

623 2355

Abstract:

The invention relates to implantable medical devices, particularly, to porous structures for such devices. In one aspect, the invention provides a porous metal scaffold comprising a porous metal network having pores defined by metal webs, the metal webs covered with at least one layer of metal particles bonded to the metal webs. In other aspects, the invention provides methods of forming porous scaffolds. In one such aspect, the method includes providing a polymer foam; forming a skin of biocompatible metal on the polymer foam by low temperature arc vapor deposition; and heating the polymer foam and the metal skin above the decomposition temperature of the polymer foam in an inert gas atmosphere; thereby the polymer foam decomposes producing a green metal foam. In yet other aspects, the invention provides methods of improving stability of porous scaffolds.

US Patent:

7740795, Jun 22, 2010

Filed:

Jul 12, 2005

Appl. No.:

11/179385

Inventors:

Kathy K. Wang - Suffern NY, US
Nicholas Nai Guang Dong - Little Falls NJ, US
Michael Meehan - Wanaque NJ, US

Assignee:

Howmedica Osteonics Corp. - Mahwah NJ

International Classification:

B22F 3/11

US Classification:

419 2, 419 23, 419 26, 419 36, 623 2355, 428613, 75415, 427 226

Abstract:

The invention relates to implantable medical devices, particularly, to porous structures for such devices. In one aspect, the invention provides a porous metal scaffold comprising a porous metal network having pores defined by metal webs, the metal webs covered with at least one layer of metal particles bonded to the metal webs. In other aspects, the invention provides methods of forming porous scaffolds. In one such aspect, the method includes providing a polymer foam; forming a skin of biocompatible metal on the polymer foam by low temperature arc vapor deposition; and heating the polymer foam and the metal skin above the decomposition temperature of the polymer foam in an inert gas atmosphere; thereby the polymer foam decomposes producing a green metal foam. In yet other aspects, the invention provides methods of improving stability of porous scaffolds.

US Patent:

8298180, Oct 30, 2012

Filed:

Nov 21, 2008

Appl. No.:

12/275604

Inventors:

Michael Meehan - Glen Rock NJ, US
Christina D' Arrigo - Hoboken NJ, US
Andrew Wong - Philadelphia PA, US

Assignee:

Becton, Dickinson and Company - Franklin Lakes NJ

International Classification:

A61M 5/00

US Classification:

604110, 60416408, 604192, 604263

Abstract:

A needle guard is disclosed. The needle guard includes a binding plate defining a multi-slot aperture adapted to receive a needle cannula therethrough. The needle guard also includes a biasing member for biasing the needle cannula within the multi-slot aperture, and a sensing arm connected to the binding plate. The sensing arm is adapted to contact a portion of the needle cannula, and is positionable for restricting movement of the needle cannula. The multi-slot aperture may include a first region having a first dimension, a second region having a second dimension, and optionally, a third region having a third dimension with the third dimension being smaller than the second dimension and the second dimension being smaller than the first dimension.

US Patent:

20090292259, Nov 26, 2009

Filed:

Nov 21, 2008

Appl. No.:

12/275636

Inventors:

Peter George Delano - Oakland NJ, US
Andrew Wong - Philadelphia PA, US
Michael Meehan - Glen Rock NJ, US
Christina D'Arrigo - Hoboken NJ, US
Annica Wayman - Morris Plains NJ, US

Assignee:

BECTON, DICKINSON AND COMPANY - Franklin Lakes NJ

International Classification:

A61M 5/00

US Classification:

604263, 604274

Abstract:

A hub assembly, such as for long needles, is disclosed. The hub assembly includes a needle hub having a proximal end and a distal end, having a cannula extending therethrough and protruding from the distal end, with the needle hub having a first engagement portion. The hub assembly also includes a stylet handle having a stylet extending therefrom. The stylet is adapted to be received within a portion of the cannula, with the stylet handle having a second engagement portion. Engagement of the first engagement portion of the needle hub and the second engagement portion of the stylet handle forms a positive lock in which at least a portion of one of the first and second engagement portions is held within the other of the first and second engagement portions in an unbiased state.

US Patent:

20090299400, Dec 3, 2009

Filed:

Nov 21, 2008

Appl. No.:

12/313661

Inventors:

Annica Wayman - Morris Plains NJ, US
Michael Meehan - Glen Rock NJ, US
Christina D'Arrigo - Hoboken NJ, US
Douglas Tyukody - Waldwick NJ, US

Assignee:

BECTON, DICKINSON AND COMPANY - Franklin Lakes NJ

International Classification:

A61B 17/34

US Classification:

606185

Abstract:

A stylet for insertion within a cannula interior of a needle is disclosed. The stylet includes a solid elongated shaft having a proximal end adapted for engagement with a needle hub, and a distal end having a surface modified profile. The surface modified profile increases the penetration force required to penetrate human skin. The ratio of the penetration force of a stylet having an unmodified distal end to the stylet having a surface modified profile is at least 1:1.4, or greater. The surface modified profile may be a roughened surface, a buffed surface and/or a blunted surface. The surface modified profile may include a yieldable material disposed over at least a portion of the distal end. A needle assembly having a stylet having a surface modified profile is also disclosed.