Andy J Choi

US Patent:

7849766, Dec 14, 2010

Filed:

May 14, 2008

Appl. No.:

12/152444

Inventors:

Andy Wonyong Choi - Wayne NJ, US
Steven Krause - Oakland NJ, US

Assignee:

Stryker Spine

International Classification:

B25B 17/02
A61B 17/88

US Classification:

81 573, 606104

Abstract:

A screwdriver is disclosed including a handle, a shaft, and a gearbox disposed between the handle and the shaft. The gearbox is structured and arranged to cause rotational motion of the shaft at a first rate due to rotational motion imparted on the handle at a second rate. In an embodiment, the first rate is greater than the second rate.

US Patent:

7981161, Jul 19, 2011

Filed:

Aug 17, 2007

Appl. No.:

11/893855

Inventors:

Andy Wonyong Choi - Wayne NJ, US
Philip Bryan - Honeoye Falls NY, US
Michael Bausch - Livonia NY, US
Scott Kennard - Brockport NY, US

Assignee:

Howmedica Osteonics Corp. - Mahwah NJ

International Classification:

A61F 2/32

US Classification:

623 2242

Abstract:

The system to implant a prosthetic device in a long bone such as a femur or a humerus includes a stem implant having a recess. The system of present invention also includes a broach to prepare the long bone that may receive the stem implant. The broach also has a recess that is similar to the recess in the stem implant. An adapter of a generally rectangular shape similar to the recess fits snugly in the recess in the stem implant. A trial neck that fits snugly in the recess formed in the adapter is also provided. A trial head may be assembled on the trial neck. A neck similar to the trial neck can be inserted in place of trial neck. A head may be assembled on the proximal end of the neck. A system for implantation of a prosthetic device in a long bone may be made available as a kit that includes at least two stems having the adapter inserted in each of the stem, at least two trial necks, at least two trial heads, at least two necks and at least two heads.

US Patent:

8465529, Jun 18, 2013

Filed:

May 16, 2008

Appl. No.:

12/152834

Inventors:

Andy Wonyong Choi - Wayne NJ, US
Michael L. Schmitz - Roswell GA, US
Se-Il Suk - Seoul, KR

Assignee:

Stryker Spine

International Classification:

A61B 17/88

US Classification:

606279, 606 86 A

Abstract:

An instrument for spinal rotation that aligns and holds direct vertebral rotation (DVR) lever arms relative to each other to achieve an initial axial alignment of a segment of vertebrae and allows the final DVR rotation by rotating the instrument and lever arms together. A method of direct vertebral rotation that allows rotating the vertebrae to be aligned relative to each other, and collectively rotating the vertebrae to be aligned relative to adjacent spinal segments by rotating the direct vertebral rotation instrument. A system for direct vertebral rotation having at least two pedicle screws. The system also includes at least two levers attachable to the pedicle screws and a clamping instrument configured to clamp the levers.

US Patent:

20190239927, Aug 8, 2019

Filed:

Feb 8, 2019

Appl. No.:

16/270976

Inventors:

- San Diego CA, US
Joon Ki An - La Mirada CA, US
Ronald Litke - Sandy Hook CT, US
Glenn DiCostanzo - Woodbury CT, US
Ernest Corrao - Bethel CT, US
Robert L. Richards - Beverly Hills MI, US
Sepehr Fariabi - Newport Coast CA, US
Adam G. Beckett - Mission Viejo, CA
Luke A. Bilger - Hunnington Beach CA, US
Daniel Dongelmans - San Clemente CA, US
Scott Pool - Laguna Hills CA, US
Shanbao Cheng - Irvine CA, US
Matthew Dwight - Lake Forest CA, US
Andy W. Choi - Irvine CA, US
Martin Leugers - San Francisco CA, US

International Classification:

A61B 17/70

Abstract:

A system for non-invasively adjusting the curvature of a spine includes a housing having a first end and a second end, a first rod having a first end telescopically disposed within a cavity of the housing along a first longitudinal axis at the first end of the housing and having a first threaded portion extending thereon, and a second end configured to be coupled to a first portion of a spinal system of a subject, a second rod having a first end telescopically disposed within the cavity along a second longitudinal axis at the second end of the housing and having a second threaded portion extending thereon, and a second end configured to be coupled to a second portion of the spinal system of the subject, a driving member rotatably disposed within the cavity and configured to be activated from a location external to the body of the subject.

US Patent:

20160270825, Sep 22, 2016

Filed:

Feb 19, 2016

Appl. No.:

15/048928

Inventors:

- San Diego CA, US
Joon Ki An - La Mirada CA, US
Ronald Litke - Sandy Hook CT, US
Glenn DiCostanzo - Woodbury CT, US
Ernest Corrao - Bethel CT, US
Robert L. Richards - Beverly Hills MI, US
Sepehr Fariabi - Newport Coast CA, US
Adam G. Beckett - Mission Viejo CA, US
Luke A. Bilger - Huntington Beach CA, US
Daniel Dongelmans - San Clemente CA, US
Scott Pool - Laguna Hills CA, US
Shanbao Cheng - Irvine CA, US
Matthew Dwight - Lake Forest CA, US
Andy W. Choi - Irvine CA, US
Martin Leugers - San Francisco CA, US

International Classification:

A61B 17/70

Abstract:

A system for non-invasively adjusting the curvature of a spine includes a housing having a first end and a second end, a first rod having a first end telescopically disposed within a cavity of the housing along a first longitudinal axis at the first end of the housing and having a first threaded portion extending thereon, and a second end configured to be coupled to a first portion of a spinal system of a subject, a second rod having a first end telescopically disposed within the cavity along a second longitudinal axis at the second end of the housing and having a second threaded portion extending thereon, and a second end configured to be coupled to a second portion of the spinal system of the subject, a driving member rotatably disposed within the cavity and configured to be activated from a location external to the body of the subject.

US Patent:

20140275992, Sep 18, 2014

Filed:

Mar 15, 2013

Appl. No.:

13/844324

Inventors:

Andy W. Choi - Irvine CA, US
Thomas R. Haley - Lafayette Hill PA, US
Scott C. Lynch - San Clemente CA, US

International Classification:

A61B 6/12

US Classification:

600424

Abstract:

A method for positioning a treatment instrument in a subject involves positioning a tissue protector of a visualization instrument in an epidural space of the subject. The tissue protector is viewed and positioned in the epidural space using fluoroscopy. A treatment instrument between a first vertebra and a second vertebra and while viewing the tissue protector positioned in the epidural space. A decompression procedure is performed using the treatment instrument.