Matthew Aaron Wixey

US Patent:

8377090, Feb 19, 2013

Filed:

Aug 15, 2012

Appl. No.:

13/586825

Inventors:

Scott V. Taylor - Rancho Santa Margarita CA, US
Matthew A. Wixey - San Jose CA, US

Assignee:

Applied Medical Resources Corporation - Rancho Santa Margarita CA

International Classification:

A61B 17/00

US Classification:

606190, 606185, 60416401

Abstract:

A surgical access device comprises an elongate shaft with a bladeless tip at the distal end. The bladeless tip has an outer surface with a proximal portion, a distal portion, and an intermediate portion. In a cross section in the proximal portion, the outer surface defines a circle. In a cross section in the intermediate portion, the outer surface defines a shape having a length greater than a width. The outer surface has first and second opposing surface portions of the shape that are generally aligned with the length. In a cross section in the distal portion, the outer surface defines a circle. In progressive proximal cross sections in the distal portion, the circle expands. In progressive proximal cross sections in the intermediate portion, a ratio of the width of the shape to the length of the shape increases and the first and second opposing surface portions are more arcuate.

US Patent:

8608768, Dec 17, 2013

Filed:

Mar 2, 2012

Appl. No.:

13/411244

Inventors:

Scott V. Taylor - Mission Viejo CA, US
Matthew A. Wixey - San Jose CA, US

Assignee:

Applied Medical Resources Corporation - Rancho Santa Margarita CA

International Classification:

A61B 17/00

US Classification:

606190, 606185

Abstract:

A surgical obturator comprising an elongate shaft extending along an axis between a proximal end and a distal end includes a bladeless tip disposed at the distal end of the shaft. The tip has a blunt point and a pair of shorter side surfaces separated by a relatively longer pair of opposing surfaces to form in radial cross-section a geometric shape that has a longer length and relatively narrower width. The side surfaces and opposing surfaces terminate in end surfaces located proximally from the blunt point. The end surfaces extend radially outwardly from opposite locations of the outer surface. A conical surface facilitates initial insertion of the obturator and the geometric shape facilitates separation of consecutive layers of muscle tissue having fibers oriented in different directions and provides proper alignment of the tip between the layers of muscle.

US Patent:

20120136347, May 31, 2012

Filed:

Feb 6, 2012

Appl. No.:

13/366487

Inventors:

John R. Brustad - Rancho Santa Margarita CA, US
Zoran Falkenstein - Rancho Santa Margarita CA, US
Matthew A. Wixey - San Jose CA, US
Gary M. Johnson - Rancho Santa Margarita CA, US
Patrick Elliott - Rancho Santa Margarita CA, US

Assignee:

Applied Medical Resources Corporation - Rancho Santa Margarita CA

International Classification:

A61B 18/18
A61B 18/14

US Classification:

606 33, 606 46

Abstract:

An electrosurgical instrument includes jaws having an electrode configuration utilized to electrically modify tissue in contact with one or more electrodes. The instrument is removably connectable to an electrosurgical unit via an electrosurgical connector extending from the instrument and a receptacle on the electrosurgical unit. The electrosurgical instrument is rotatable without disrupting electrical connection to the electrodes of the jaws. One or more of the electrodes is retractable. The electrosurgical unit and instrument optimally seals and/or cuts tissue based on identifying the tissue and monitoring the modification of the tissue by the application of radio frequency energy.

US Patent:

20130015230, Jan 17, 2013

Filed:

Sep 14, 2012

Appl. No.:

13/618453

Inventors:

Matthew A. Wixey - San Jose CA, US
Gary M. Johnson - Rancho Santa Margarita CA, US

Assignee:

Applied Medical Resources Corporation - Rancho Santa Margarita CA

International Classification:

A61B 17/068

US Classification:

2271753, 2271761, 2271752

Abstract:

A surgical stapler is provided that maintains the jaws of the stapler in an open position and prevents firing of staples when a cartridge is not loaded in one of the jaws. Distinct positioning and sequencing of the jaws, capture pin and firing of the staples are provided by a latch mechanism. Such locking and latching mechanisms ensure proper operation of the stapler.

US Patent:

20130046140, Feb 21, 2013

Filed:

Oct 24, 2012

Appl. No.:

13/659462

Inventors:

Applied Medical Resources Corporation - Rancho Santa Margarita CA, US
Kennii Pravongviengkham - Rancho Santa Margarita CA, US
Matthew M. Becerra - Rancho Santa Margarita CA, US
Matthew A. Wixey - San Jose CA, US
Haruyasu Yawata - Huntington Beach CA, US
Gary M. Johnson - Rancho Santa Margarita CA, US
Zoran Falkenstein - Rancho Santa Margarita CA, US
John R. Brustad - Rancho Santa Margarita CA, US
Charles C. Hart - Rancho Santa Margarita CA, US

Assignee:

Applied Medical Resources Corporation - Rancho Santa Margarita CA

International Classification:

A61B 1/00

US Classification:

600104

Abstract:

The invention relates to a tissue morcellator for minimally invasive surgery. The morcellator has a metallic cutting ring mounted on a visually transparent hollow cylinder, which in combination with a visually transparent outer morcellator tube enables a surgeon to visualize the inside of the morcellator shaft for detection of loose tissue fragments in the device. A tenaculum used with the morcellation device has a spacer for preventing contact with the blade. The cutting tube can oscillate, rather than rotate, along the longitudinal axis of the cutting tube. The morcellator utilizes an extendable tissue guide on the outer tube of the morcellator shaft for preventing the tissue from rotating along the longitudinal axis of the morcellator tube. This allows the tissue to be continuously rotated into the morcellator device for continuous peel. The tissue guide can also be fully retracted to allow for coring of the bulk tissue.

US Patent:

20140066927, Mar 6, 2014

Filed:

Nov 11, 2013

Appl. No.:

14/076469

Inventors:

Zoran Falkenstein - Rancho Santa Margarita CA, US
Christopher J. Cappello - Broomfield CO, US
Gary M. Johnson - Rancho Santa Margarita CA, US
Benjamin A. Gianneschi - Rancho Santa Margarita CA, US
Olivia J. Tran - San Diego CA, US
Matthew A. Wixey - San Jose CA, US
Kennii Pravongviengkham - Rancho Santa Margarita CA, US
Boun Pravong - Rancho Santa Margarita CA, US
Haruyasu Yawata - Huntington Beach CA, US
Matthew M. Becerra - Rancho Santa Margarita CA, US
Adam J. Cohen - Worcester MA, US
Nabil Hilal - Rancho Santa Margarita CA, US
Edward D. Pingleton - Rancho Santa Margarita CA, US
Said S. Hilal - Rancho Santa Margarita CA, US
Charles C Hart - Rancho Santa Margarita CA, US
Chris Wikoff - Newport Beach CA, US

Assignee:

Applied Medical Resources Corporation - Rancho Santa Margarita CA

International Classification:

A61B 18/14

US Classification:

606 41

Abstract:

An electrosurgical system can include an electrosurgical generator, a feedback circuit or controller, and an electrosurgical tool. The feedback circuit can provide an electrosurgery endpoint by determining the phase end point of a tissue to be treated. The electrosurgical system can include more than one electrosurgical tool for different electrosurgical operations and can include a variety of user interface features and audio/visual performance indicators. The electrosurgical system can also power conventional bipolar electrosurgical tools and direct current surgical appliances.

US Patent:

20220273309, Sep 1, 2022

Filed:

May 16, 2022

Appl. No.:

17/745757

Inventors:

- Sunnyvale CA, US
Matthew A. WIXEY - San Jose CA, US
Nicholas RAGOSTA - San Francisco CA, US
David W. WEIR - San Carlos CA, US
Emily COOPER - Mountain View CA, US
Melody WU - Sunnyvale CA, US

International Classification:

A61B 17/072
A61B 34/00

Abstract:

Disclosed are techniques for stapler reload detection and identification. A manipulator is configured to have an instrument mounted thereto. The instrument includes an end effector configured for mounting of a replaceable stapler cartridge and a pusher member configured to articulate a staple pushing shuttle of the stapler cartridge to deploy staples from the stapler cartridge. An actuation mechanism is drivingly coupled with the pusher member. A control unit is configured to control operation of the actuation mechanism to move the pusher member from a first position to a second position, wherein at the second position, the pusher member makes contact with a portion of the staple cartridge or a portion of the end effector; determine a distance of movement of the pusher member from the first position to the second position; and determine, based on the distance of movement, an operational status of the instrument relating to the stapler cartridge.

US Patent:

20230114904, Apr 13, 2023

Filed:

Nov 15, 2022

Appl. No.:

17/987481

Inventors:

- Sunnyvale CA, US
Matthew A. Wixey - San Jose CA, US

International Classification:

A61B 34/00
A61B 1/00
F16H 55/17
F16H 59/02

Abstract:

A medical device drive system can include a rotational input, a coupling member engaged with the rotational input, a first gear having an engagement feature sized and shaped to engage with the coupling member, and a second gear coupled with the first gear, the second gear coupled to a movable element. The system can have a first system state and a second system state. In the first system state the coupling member is not engaged with the engagement feature and the first gear rotates without moving the coupling member. In the second system state the coupling member is engaged with the engagement feature of the first gear and rotation of the rotational input turns the coupling member, the first gear, and the second gear to move the movable element.