Thomas M Callahan

US Patent:

7594917, Sep 29, 2009

Filed:

May 12, 2003

Appl. No.:

10/436038

Inventors:

Gregory R. Whittaker - Stoneham MA, US
Eric Hyman - Ashland MA, US
Keith Orr - Boston MA, US
Thomas Callahan - South Hadley MA, US

Assignee:

Ethicon, Inc. - Somerville NJ

International Classification:

A61B 17/60

US Classification:

606 98, 606 64, 606 96

Abstract:

A method and apparatus for fixing a ligament in a bone tunnel by cross-pinning the ligament in the bone tunnel.

US Patent:

8080013, Dec 20, 2011

Filed:

Feb 25, 2009

Appl. No.:

12/392682

Inventors:

Gregory R. Whittaker - Stoneham MA, US
Eric Hyman - Ashland MA, US
Keith M. Orr - Boston MA, US
Thomas Callahan - South Hadley MA, US

Assignee:

DePuy Mitek, Inc. - Raynham MA

International Classification:

A61B 17/17

US Classification:

606 98, 606 96, 606 64

Abstract:

A method and apparatus for fixing a ligament in a bone tunnel by cross-pinning the ligament in the bone tunnel.

US Patent:

54677750, Nov 21, 1995

Filed:

Mar 17, 1995

Appl. No.:

8/405879

Inventors:

Thomas F. Callahan - Maynard MA
Matthew G. Callahan - Ipswich MA

Assignee:

University Research Engineers & Associates - Maynard MA

International Classification:

A61B 704

US Classification:

128715

Abstract:

A modular auscultation sensor and telemetry system ("MASTS") for sensing body sounds of a patient in a noisy environment where both desired body sounds and undesirable noise may be detected. The MASTS includes a transducer head that comprises two sensors that are substantially acoustically and mechanically isolated from each other. The first sensor is positioned to sense body sounds of a patient when the transducer head is placed against a patient's skin, and the second sensor is positioned to sense primarily noise, if any. The sound signals are transmitted to a digital signal processor carried in a waist-pack or similar container. The digital signal processor processes the sound signals using an adaptive filter scheme to produce an output signal that is indicative of primarily of the body sounds emanating from the patient. A receiving device such as earphones, a hybrid noise reduction ("HNR") headset, an HNR helmet, a tape deck, or a computer may be plugged into the waist-pack and coupled to the digital signal processor to receive the output signals.

US Patent:

48985449, Feb 6, 1990

Filed:

Mar 23, 1988

Appl. No.:

7/172143

Inventors:

Thomas Callahan - Wakefield MA

Assignee:

Thinking Machines Corporation - Cambridge MA

International Classification:

H01R 907

US Classification:

439498

Abstract:

A printed circuit board interconnect system having flat or ribbon cable folded in a pattern and supported in that pattern so that a large number of boards in an upper rack can be connected each by a respective cable to corresponding boards among a large number of boards in a lower rack in an orderly fashion while preserving the pin orientation for the boards. The cables are each folded at the ends in right angle bends that convert the horizontal direction to vertical but reverses the conductor orientation. In a central portion of the vertical extending cable, it is folded in two further right angle bends and mid way between them with a 180 degree bend. The central bend reestablishes the conductor orientation. A multi-row comb serves to support the ribbon cable in the central region and keep one cable separate from another.

US Patent:

55787991, Nov 26, 1996

Filed:

Jun 2, 1995

Appl. No.:

8/458125

Inventors:

Thomas F. Callahan - Maynard MA
Matthew G. Callahan - Ipswich MA
Ann F. Bell - Kenosha WI

Assignee:

University Research Engineers & Ass. - Maynard MA

International Classification:

H04R 2500

US Classification:

181137

Abstract:

A disposable patient-to-transducer interface device for use in securely holding a transducer such as a stethoscope head positioned against the skin surface of a patient. The interface device may be adhered to the patient's skin surface and the stethoscope head securely received in an opening provided in the device. When in use, the interface device substantially surrounds the stethoscope head thereby providing a passive barrier to ambient noise. The interface device also develops a relatively good air seal around the stethoscope head and thus provides an additional barrier to ambient noise. Furthermore, the interface device prevents substantial movement of the transducer head and, thereby, minimizes the amount of surface motion noise generated and detected by the transducer head. In addition, when the interface device is attached to the skin surface of the patient, it establishes a good reference point whereby continual or periodic monitoring of a particular location on the patient may be accomplished.

US Patent:

51194570, Jun 2, 1992

Filed:

Aug 15, 1990

Appl. No.:

7/567796

Inventors:

Thomas F. Callahan - Maynard MA

Assignee:

University Research Engineers & Associates, Inc. - Maynard MA

International Classification:

G02B 644

US Classification:

385107

Abstract:

A cable and connector system comprises a cable having a plurality of conductors for carrying electric current. The conductors are surrounded by a plurality of aramid fiber tension members that carry tensile loads that are applied to the cable. The conductors and tension members are wrapped with an aramid fiber armor tape. The armor tape protects the bundle from crushing loads and penetration by sharp objects. A connector is provided at each end of the cable whereby the tension members of the cable may be fixedly attached to the connector such that the tensile loads carried by the tension members are directly transmitted to the connector and are not transmitted to the conductors.