Mark E Dahl

US Patent:

20210401465, Dec 30, 2021

Filed:

Sep 8, 2021

Appl. No.:

17/468779

Inventors:

- Kalamazoo MI, US
Yves Stephane Crozet - Ramsey NJ, US
Vinzenz Andreas Burgherr - Bern, CH
Mark Thomas Dahl - Afton MN, US

International Classification:

A61B 17/62
A61B 17/64
A61H 3/00
A61B 17/66

Abstract:

Disclosed herein are external fixation frames for correcting bone deformities. The external fixation frames include a top fixation ring and a bottom fixation ring coupled to one another by at least two struts. A half ring is coupled to bottom fixation ring. The bottom fixation ring is u-shaped. One or more rocker members may be coupled to the bottom fixation ring. The half ring may be hingedly coupled to the bottom fixation ring such that it can rotate with respect to the bottom fixation ring from a first position to a second position.

US Patent:

20190282274, Sep 19, 2019

Filed:

Jun 3, 2019

Appl. No.:

16/429502

Inventors:

- Kalamazoo MI, US
Yves Stephane Crozet - Ramsey NJ, US
Vinzenz Andreas Burgherr - Bern, CH
Mark Thomas Dahl - Afton MN, US

International Classification:

A61B 17/62
A61B 17/64
A61B 17/66
A61H 3/00

Abstract:

Disclosed herein are external fixation frames for correcting bone deformities. The external fixation frames include a top fixation ring and a bottom fixation ring coupled to one another by at least two struts. A half ring is coupled to bottom fixation ring. The bottom fixation ring is u-shaped. One or more rocker members may be coupled to the bottom fixation ring. The half ring may be hingedly coupled to the bottom fixation ring such that it can rotate with respect to the bottom fixation ring from a first position to a second position.

US Patent:

20190021767, Jan 24, 2019

Filed:

Sep 21, 2018

Appl. No.:

16/137677

Inventors:

- Kalamazoo MI, US
Yves Stephane Crozet - Ramsey NJ, US
Vinzenz Andreas Burgherr - Bern, CH
Mark Thomas Dahl - Afton MN, US

International Classification:

A61B 17/62
A61B 17/64
A61B 17/66

Abstract:

Disclosed herein are external fixation frames for correcting bone deformities. The external fixation frames include a top fixation ring and a bottom fixation ring coupled to one another by at least two struts. A half ring is coupled to bottom fixation ring. The bottom fixation ring is u-shaped. One or more rocker members may be coupled to the bottom fixation ring. The half ring may be hingedly coupled to the bottom fixation ring such that it can rotate with respect to the bottom fixation ring from a first position to a second position.

US Patent:

20180360496, Dec 20, 2018

Filed:

Aug 22, 2018

Appl. No.:

16/108787

Inventors:

- Kalamazoo MI, US
Yves Stephane Crozet - Ramsey NJ, US
Vinzenz Andreas Burgherr - Bern, CH
Mark Thomas Dahl - Afton MN, US

International Classification:

A61B 17/62
A61H 3/00
A61B 17/66
A61B 17/64
A61B 17/88

Abstract:

Disclosed herein are external fixation frames for correcting bone deformities. The external fixation frames include a top fixation ring and a bottom fixation ring coupled to one another by at least two struts. A half ring is coupled to bottom fixation ring. The bottom fixation ring is u-shaped. One or more rocker members may be coupled to the bottom fixation ring. The half ring may be hingedly coupled to the bottom fixation ring such that it can rotate with respect to the bottom fixation ring from a first position to a second position.

US Patent:

20170296233, Oct 19, 2017

Filed:

Jun 28, 2017

Appl. No.:

15/635960

Inventors:

- Kalamazoo MI, US
Yves Stephane Crozet - Ramsey NJ, US
Vinzenz Andreas Burgherr - Bern, CH
Mark Thomas Dahl - Afton MN, US

International Classification:

A61B 17/64
A61H 3/00
A61B 17/62

Abstract:

An external fixation frame for correcting a bone deformity includes a first fixation ring and a second fixation ring. A posterior adjustable length strut couples a posterior portion of the first fixation ring to a posterior portion of the second fixation ring and has universal joint. Medial and lateral adjustable length struts couple medial and lateral portions of the first fixation ring to medial and lateral portions of the second fixation ring respectively, each of the medial and lateral adjustable length struts including a constrained hinge joint. The fixation frame also includes a half ring coupled to the second fixation ring.

US Patent:

20170215923, Aug 3, 2017

Filed:

Apr 12, 2017

Appl. No.:

15/485402

Inventors:

- Kalamazoo MI, US
Yves Stephane Crozet - Ramsey NJ, US
Vinzenz Andreas Burgherr - Bern, CH
Mark Thomas Dahl - Afton MN, US

International Classification:

A61B 17/62
A61B 17/66
A61B 17/64

Abstract:

An external fixation frame for correcting a bone deformity includes a first fixation ring and a second fixation ring. A posterior adjustable length strut couples a posterior portion of the first fixation ring to a posterior portion of the second fixation ring and has universal joint. Medial and lateral adjustable length struts couples medial and lateral portions of the first fixation ring to medial and lateral portions of the second fixation ring respectively, each of the medial and lateral adjustable length struts including a constrained hinge joint. The fixation frame also includes a half ring hingedly coupled to the second fixation ring, and an anterior adjustable length strut coupling an anterior portion of the first fixation ring to the half ring.

US Patent:

20140350557, Nov 27, 2014

Filed:

Aug 11, 2014

Appl. No.:

14/456121

Inventors:

- Selzach, CH
Yves Stephane Crozet - Ramsey NJ, US
Vinzenz Andreas Burgherr - Bern, CH
Mark Thomas Dahl - Afton MN, US

International Classification:

A61B 17/60

US Classification:

606 54

Abstract:

An external fixator system comprising at least two fixation plates which are arranged at a distance to each another, at least one adjustable length strut having a first end region and a second end region which are in connection with the fixation plates and at least one actuation unit to adjust the length of the strut in order to adjust the distance and/or orientation between the fixation plates. The actuation unit is in a fixed connection with at least one of the fixation plates as well as with at least one of the end regions of the respective strut in order to connect the strut with the fixation plate. The actuation unit comprises a feedback unit which provides the user with a feedback concerning the degree of the actuation.