Thomas Sidney Davison

US Patent:

6361488, Mar 26, 2002

Filed:

Jan 28, 2000

Appl. No.:

09/491808

Inventors:

Thomas Davison - North Attleboro MA
Adam Sher - North Attleboro MA
Gene P. DiPoto - Upton MA
John D. Unger - Wrentham MA

Assignee:

Endius Incorporated - Plainvile MA

International Classification:

A61B 100

US Classification:

600102, 600114, 606130

Abstract:

An apparatus ( ) for use in percutaneous surgery includes a cannula ( ), a first support ( ), and a second support ( ). The cannula ( ) has a channel ( ) extending into the cannula ( ). The channel ( ) has a central axis ( ). The first support ( ) is associated to the cannula ( ) and has a circular perimeter ( ) which has a center ( ) on the central axis ( ). The second support ( ) supports a viewing element ( ) which extends into the channel ( ). The second support ( ) is rotatable about the center ( ) of the circular perimeter ( ) of the first support ( ) relative to the first support ( ).

US Patent:

6387109, May 14, 2002

Filed:

Aug 3, 1999

Appl. No.:

09/365639

Inventors:

Thomas W. Davison - North Attleboro MA
Stephen DiMatteo - Seehonk MA

Assignee:

Ethicon Endo-Surgery, Inc. - Cincinnati OH

International Classification:

A61B 1732

US Classification:

606169, 604 22

Abstract:

One device in accordance with the present invention includes a surgical device for creating channels in tissue of a patient. The device includes a catheter defining a lumen and a transducer assembly carried by the catheter along a lengthwise dimension of the catheter. An end effector is operatively coupled to the transducer assembly and extends distally relative to the transducer assembly. The end effector has a vibrating channel-forming tip wherein the channel-forming tip is adapted to create channels in the heart of a patient. A method in accordance with the present invention includes the steps of inserting an end effector having a tip into a patient, placing the tip of the end effector in direct contact with a surface of the heart, energizing the end effector to cause the tip to vibrate, piercing through the surface of the heart with the tip to create a channel, and removing the end effector.

US Patent:

6652553, Nov 25, 2003

Filed:

Jul 16, 2001

Appl. No.:

09/906463

Inventors:

Thomas W. Davison - North Attleboro MA
Adam Sher - North Attleboro MA
John D. Unger - Wrentham MA

Assignee:

Endius Incorporated - Plainville MA

International Classification:

A61B 1700

US Classification:

606190

Abstract:

A surgical tool ( ) for use in expanding a cannula ( ) includes a first leg ( ) having a first end ( ) engageable with an inner surface ( ) of the cannula. A second leg ( ) is connected with the first leg ( ). The second leg ( ) has a second end ( ) engageable with the inner surface ( ) of the cannula ( ). The first and second ends ( ) are movable away from each other to apply a radially outwardly directed force to the inner surface ( ) of the cannula ( ) and cause expansion of the cannula.

US Patent:

6800084, Oct 5, 2004

Filed:

Jan 30, 2001

Appl. No.:

09/772605

Inventors:

Thomas W. Davison - North Attleboro MA
Timothy E. Taylor - Hoover AL
Adam Sher - North Attleboro MA

Assignee:

Endius Incorporated - Plainville MA

International Classification:

A61M 2900

US Classification:

606198, 604264

Abstract:

A method of performing a surgical procedure on a body includes providing a cannula having a tubular structure with first and second tubular portions defining first and second passages for receiving surgical instruments. The second tubular portion is inserted inside the body and the first tubular portion is inserted so that the first tubular portion extends from an exterior of the body to inside the body. The second tubular portion expands to increase the cross-sectional area of the second passage in the second tubular portion while the second tubular portion is inside the body. The cross-sectional area of the first passage in the first tubular portion is maintained. The first tubular portion has a first thickness and the second tubular portion has a second thickness different than the first thickness.

US Patent:

6811558, Nov 2, 2004

Filed:

May 9, 2003

Appl. No.:

10/435730

Inventors:

Thomas W. Davison - North Attleboro MA
Timothy E. Taylor - Hoover AL
Adam Sher - North Attleboro MA

Assignee:

Endius Incorporated - Plainville MA

International Classification:

A61B 1700

US Classification:

606190, 604104

Abstract:

A method of performing a surgical procedure on a body includes providing a cannula having a tubular structure with first and second tubular portions defining first and second passages for receiving surgical instruments. The second tubular portion is inserted inside the body and the first tubular portion is inserted so that the first tubular portion extends from an exterior of the body to inside the body. The second tubular portion expands to increase the cross-sectional area of the second passage in the second tubular portion while the second tubular portion is inside the body. The cross-sectional area of the first passage in the first tubular portion is maintained. The first tubular portion has a first thickness and the second tubular portion has a second thickness different than the first thickness.

US Patent:

6837891, Jan 4, 2005

Filed:

May 16, 2003

Appl. No.:

10/439385

Inventors:

Thomas W. Davison - North Attleboro MA, US
Timothy E. Taylor - Hoover AL, US
Adam Sher - North Attleboro MA, US

Assignee:

Endius Incorporated - Plainville MA

International Classification:

A61B 1700

US Classification:

606108, 60416405

Abstract:

A cannula () receives surgical instruments () for performing a surgical procedure on a body (). The cannula () comprises a tube structure () defining a passage () through which the surgical instruments () are inserted into the body (). The tube structure () has a proximal end () and a distal end (). The tube structure () includes an expandable portion () for enabling an increase in the cross-sectional area of the passage () at the distal end (). The expandable portion () of the tube structure (), when expanded, has a conical configuration.

US Patent:

7001397, Feb 21, 2006

Filed:

May 16, 2003

Appl. No.:

10/440002

Inventors:

Thomas W. Davison - North Attleboro MA, US
Timothy E. Taylor - Hoover AL, US
Adam Sher - North Attleboro MA, US

Assignee:

Endius Incorporated - Plainville MA

International Classification:

A61B 17/00

US Classification:

606108, 604264

Abstract:

Methods and cannulae for providing access to a surgical location within a patient are described. A cannula () receives surgical instruments () for performing a surgical procedure on a body (). The cannula () comprises a tube structure () defining a passage () through which the surgical instruments () are inserted into the body (). The tube structure () has a proximal end () and a distal end (). The tube structure () includes an expandable portion () for enabling an increase in the cross-sectional area of the passage () at the distal end (). The expandable portion () of the tube structure (), when expanded, has a conical configuration.

US Patent:

7033369, Apr 25, 2006

Filed:

May 16, 2003

Appl. No.:

10/439979

Inventors:

Thomas W. Davison - North Attleboro MA, US
Timothy E. Taylor - Hoover AL, US
Adam Sher - North Attleboro MA, US

Assignee:

Endius, Inc. - Plainville MA

International Classification:

A61F 11/00

US Classification:

606108, 604104

Abstract:

A cannula () receives surgical instruments () for performing a surgical procedure on a body (). The cannula () comprises a tube structure () defining a passage () through which the surgical instruments () are inserted into the body (). The tube structure () has a proximal end () and a distal end (). The tube structure () includes an expandable portion () for enabling an increase in the cross-sectional area of the passage () at the distal end (). The expandable portion () of the tube structure (), when expanded, has a conical configuration.