Andrew George Fischer

US Patent:

8303663, Nov 6, 2012

Filed:

Jul 22, 2010

Appl. No.:

12/841465

Inventors:

Omar F. Jimenez - Gering NE, US
Nicholas Ransom Powley - St. Paul MN, US
Andrew G. Fischer - Hopkins MN, US
Yefim Safris - Golden Valley MN, US

Assignee:

SpineX Tec, LLC - Gering NE

International Classification:

A61F 2/44

US Classification:

623 1716

Abstract:

Improved methods and apparatuses for vertebral body distraction and fusion in accordance with various embodiments of the present invention employ one or more coaxial screw gear sleeve mechanisms. In various embodiments, coaxial screw gear sleeve mechanisms include a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing the device to distract.

US Patent:

8535337, Sep 17, 2013

Filed:

Apr 26, 2011

Appl. No.:

13/094527

Inventors:

David Chang - Rochester NY, US
Nicholas Ransom Powley - St. Paul MN, US
Alan Fischer - Ames IA, US
Andrew G. Fischer - Hopkins MN, US

International Classification:

G01T 1/161
H05G 1/06
H05G 1/00
H05G 1/10
H05G 1/24

US Classification:

606130, 606 97, 25036302, 25036307, 378102

Abstract:

Improved methods and apparatuses for inserting pedicle screws in accordance with embodiments of the present invention include an image correction algorithm. In various embodiments, an original image of a region of interest of a patient including a pedicle is created with an X-ray emitter and an X-ray detector. Due to the X-ray emitter not being aligned orthogonal to the X-ray detector, the original image will be skewed. Using a known location and orientation of the X-ray detector, a location and orientation of the X-ray emitter provided by a position monitoring system, and the original image, a processing system can execute the image correction algorithm to provide a corrected image to allow a surgeon to properly insert a pedicle screw along the axis of the pedicle while viewing an accurate corrected image in real time.

US Patent:

20110138948, Jun 16, 2011

Filed:

Jul 22, 2010

Appl. No.:

12/841869

Inventors:

Omar F. Jimenez - Gering NE, US
Nicholas Ransom Powley - St. Paul MN, US
Andrew G. Fischer - Hopkins MN, US
Yefim Safris - Golden Valley MN, US

International Classification:

F16H 25/22
F16H 25/20

US Classification:

7442482, 7442471

Abstract:

An improved mechanism for expanding or lifting a device in accordance with various embodiments of the present invention is a coaxial screw gear sleeve mechanism. In various embodiments, coaxial screw gear sleeve mechanisms includes a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing a device utilizing such a mechanism to expand or lift between a collapsed configuration and an expanded configuration.

US Patent:

20120022357, Jan 26, 2012

Filed:

Apr 26, 2011

Appl. No.:

13/094524

Inventors:

David Chang - Rochester NY, US
Nicholas Ransom Powley - St. Paul MN, US
Andrew G. Fischer - Hopkins MN, US
Alan Fischer - Ames IA, US

International Classification:

A61B 6/00
H05G 1/64

US Classification:

600407, 378 988

Abstract:

Improved methods and apparatuses for imaging during medical procedures in accordance with various embodiments of the present invention include use of an image correction algorithm. In various embodiments, an original image of a region of interest where a medical procedure occurring along a particular axis will be performed is created with a beam emitter and a generally planar detector. Due to the emitter not being aligned orthogonal to the detector, the original image will be skewed. Using a known location and orientation of the detector, a location and orientation of the emitter provided by a position monitoring system, and the original image, a processing system can execute the image correction algorithm to provide a corrected image to allow a surgeon to perform the medical procedure while viewing an accurate corrected image in real-time.

US Patent:

20120323329, Dec 20, 2012

Filed:

Aug 22, 2012

Appl. No.:

13/591463

Inventors:

Omar F. Jimenez - Gering NE, US
Nicholas Ransom Powley - St. Paul MN, US
Andrew G. Fischer - Hopkins MN, US
Yefim Safris - Golden Valley MN, US

International Classification:

A61F 2/44

US Classification:

623 1716

Abstract:

Improved methods and apparatuses for vertebral body distraction and fusion in accordance with various embodiments of the present invention employ one or more coaxial screw gear sleeve mechanisms. In various embodiments, coaxial screw gear sleeve mechanisms include a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing the device to distract.

US Patent:

20200250246, Aug 6, 2020

Filed:

Feb 3, 2020

Appl. No.:

16/780764

Inventors:

- Chicago IL, US
ALAN CHRISTIANSON - SPEARFISH SD, US
ALAN FISCHER - SPEARFISH SD, US
ANDREW FISCHER - HOPKINS MN, US
BEN JASINSKI - SPEARFISH SD, US
KEVIN DUELLMAN - GLENVIEW IL, US

Assignee:

SRAM, LLC - Chicago IL

International Classification:

G06F 16/953
G07C 5/00

Abstract:

The disclosed embodiments relate to a computer-based system and/or method which automatically, e.g. with minimal, or entirely without, human intervention, identifies, distinguishes, disambiguates or otherwise differentiates among multiple configurable bicycles based on the data reported to the system from the bicycle's data-reporting components, such that the data reported by those components may be associated with a particular bicycle for real-time and/or later review, analysis, etc. More particularly, where one or more data reporting components of a bicycle may change, the disclosed embodiments enable a data gathering system/service to identify, distinguish, disambiguate or otherwise differentiate among multiple bicycles which may use, or have used, one or more of the same components so as to associate the reported data, such as from a particular ride, with the correct bicycle configuration for real-time and/or later review and/or analysis.

US Patent:

20190070018, Mar 7, 2019

Filed:

Nov 5, 2018

Appl. No.:

16/180448

Inventors:

- Gering NE, US
Nicholas Ransom Powley - St. Paul MN, US
Andrew G. Fischer - Hopkins MN, US
Yefim Safris - Golden Valley MN, US

International Classification:

A61F 2/44
F16H 25/22
F16H 25/20
A61B 17/70
A61F 2/46
A61F 2/50
A61F 2/48
A61F 2/36
A61F 2/34
A61F 2/30
A61F 2/28
A61F 2/38
A61B 17/68
A61B 17/02

Abstract:

An improved mechanism for expanding or lifting a device in accordance with various embodiments of the present invention is a coaxial screw gear sleeve mechanism. In various embodiments, coaxial screw gear sleeve mechanisms includes a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing a device utilizing such a mechanism to expand or lift between a collapsed configuration and an expanded configuration.

US Patent:

20170100258, Apr 13, 2017

Filed:

Oct 24, 2016

Appl. No.:

15/332066

Inventors:

- Gering NE, US
Nicholas R. Powley - St. Paul MN, US
Andrew G. Fischer - Hopkins MN, US
Yefim Safris - Golden Valley MN, US

International Classification:

A61F 2/44
F16H 25/20
A61B 17/70

Abstract:

Medical devices in accordance with various embodiments of the present invention employ one or more coaxial screw gear sleeve mechanisms. In various embodiments, coaxial screw gear sleeve mechanisms include a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing the device to expand.