Abraham Mathew

US Patent:

8382791, Feb 26, 2013

Filed:

Aug 30, 2010

Appl. No.:

12/871318

Inventors:

Mary Frecker - State College PA, US
Abraham Mathew - Hershey PA, US
Eric Pauli - Hummelstown PA, US
Andrew Rau - Jackson Center PA, US
Jeffrey Kingston - Bronx NY, US
Greg Hayes - Pipersville PA, US
Andrew Baranak - Chalfont PA, US

Assignee:

The Penn State Research Foundation - University Park PA

International Classification:

A61B 17/00

US Classification:

606205

Abstract:

Recent advances in minimally invasive surgical procedures have created a demand for smaller scale tools with improved performance characteristics. Attempts to scale down modern tools to the meso level (1-5 mm) have caused severe performance losses. Surgical tools of the present invention provide significant improvements in operable range and force application for both grasping and spreading when compared to currently used endoscopic forceps. This is achieved by using two actuators that separately control the spreading and grasping functions of the surgical tool.

US Patent:

8530039, Sep 10, 2013

Filed:

Aug 3, 2009

Appl. No.:

12/534329

Inventors:

James H. Adair - State College PA, US
Mary Frecker - State College PA, US
Christopher Muhlstein - University Park PA, US
Eric Mockensturm - State College PA, US
Harriet Black Nembhard - University Park PA, US
Randy S. Haluck - Lititz PA, US
Abraham Mathew - Hershey PA, US
Nicholas Antolino - University Park PA, US
Gregory R Hayes - State College PA, US
Milton Aguirre - State College PA, US
Rebecca Kirkpatrick - University Park PA, US

Assignee:

The Penn State Research Foundation - University Park PA

International Classification:

B32B 1/00
B32B 3/00

US Classification:

428174

Abstract:

A polycrystalline mesoscale component, formed through a process including filing a mold cavity formed in a photoresist with a mold fill, is provided with an overall length L divided into multiple segments with a second segment extending from a first segment at a nonlinear angle. The first segment has a first segment height H1 and a first segment thickness T1, while the second segment has a second segment height H2 and a second segment thickness T2, with the lesser of H1 and H2 defining a minimum segment height Hmin and the lesser of T1 and T2 defining a minimum segment thickness Tmin. The resultant component has a ratio of L:Hmin:Tmin of 20-80:1:0. 5-10 where Hmin is between 5 and 500 microns. In specific instances, the nonlinear angle is acute, the multiple segments are rectilinear in cross section, and a segment thickness has an edge resolution of between 0. 1 and 2 microns.

US Patent:

8591526, Nov 26, 2013

Filed:

Nov 2, 2007

Appl. No.:

12/442007

Inventors:

James Cronin - Greenville SC, US
Mary Frecker - State College PA, US
Abraham Mathew - Hershey PA, US

Assignee:

The Penn State Research Foundation - University Park PA

International Classification:

A61B 17/04
A61B 17/12

US Classification:

606144, 606207, 606223

Abstract:

A suturing device includes an elongated sheath and a suturing assembly. The elongated sheath has a working end for insertion through a working channel in an endoscope and has an inner passage. The suturing assembly includes an elongated flexible base member, a first suturing arm and a second suturing arm. The suturing arms each have a proximal end interconnected with the elongated base member and an opposite distal end. A needle receiver is disposed at the distal end of each suturing arm. The suturing arms are movable between an open position wherein the distal ends are spaced apart by a first distance and a closed position wherein the distal ends are spaced apart by a second distance less than the first distance.

US Patent:

20110071428, Mar 24, 2011

Filed:

Aug 30, 2010

Appl. No.:

12/871344

Inventors:

Mary Frecker - State College PA, US
Abraham Mathew - Hershey PA, US
Casandra Niebel - State College PA, US
Andrew Rau - Jackson Center PA, US

Assignee:

The Penn State Research Foundation - University Park PA

International Classification:

A61B 10/00

US Classification:

600566

Abstract:

Biopsy devices which can be used with a flexible endoscope are described herein. Inventive biopsy devices can be used in minimally invasive procedures and other biopsy applications. Inventive biopsy devices can be used through an endoscope channel to perform zero invasive biopsies on the gastrointestinal system and other organs. Actuation devices for use to twist or manipulate the biopsy device even when it is at the end of the endoscopic cable are provided according to embodiments of the present invention.