Instruments and methods for stabilization of bony structures

Patent metadata

Field	Value
Publication number	US-2016228162-A1
Application number	US-201615134939-A
Country	US
Kind code	A1
Filing date	Apr 21, 2016
Priority date	Oct 20, 1999
Publication date	Aug 11, 2016
Grant date	—

Abstract

The present invention relates to a brace installation instrument placement that is mounted to anchors secured in an animal subject. The installation instrument includes anchor extensions coupled to the anchors. The instrument is movable with respect to the anchors to position a brace in a position more proximate the anchors. The brace can be indexed for insertion at a predetermined orientation with respect to the installation instrument. Methods and techniques for using the installation instrument are also provided.

First claim

1 - 98 . (canceled)

99 . A minimally invasive surgical system comprising:
a brace; a first bone anchor having a first head and a first yoke defining a first passageway configured to receive the brace; a first extension connected with the first bone anchor and configured to extend from the first bone anchor through the skin when the first bone anchor is driven in a bony structure such that a portion of the first extension extending above the skin defines a position of the first passageway, the first yoke and the first extension being pivotable about the first head; a second bone anchor having a second yoke defining a second passageway configured to receive the brace; and a second extension connected with the second bone anchor and configured to extend from the second bone anchor through the skin when the second bone anchor is driven in a bony structure such that a portion of the second extension extending above the skin defines a position of the second passageway, wherein the system is configured such that when the brace is positioned in the second passageway, the portion of the first extension extending above the skin may be manipulated relative to the portion of the second extension extending above the skin such that the first passageway is aligned with the second passageway.

100 . A minimally invasive surgical system as recited in claim 99 , wherein the portion of the first extension extending above the skin is configured to be manipulated to move the first extension relative to the second extension from a first orientation in which the first passageway is not aligned with the second passageway to a second orientation in which the first passageway is aligned with the second passageway.

101 . A minimally invasive surgical system as recited in claim 99 , wherein the second bone anchor comprises a second head, the second yoke and the second extension being pivotable about the second head.

102 . A minimally invasive surgical system as recited in claim 99 , wherein the second bone anchor does not include multi-axial capabilities.

103 . A minimally invasive surgical system as recited in claim 99 , wherein the first and second extensions are releasably attached to the first and second bone anchors.

104 . A minimally invasive surgical system as recited in claim 99 , wherein the brace is configured to be side-loaded into the first and second extensions.

105 . A minimally invasive surgical system as recited in claim 99 , wherein the first and second extensions each include a channel, the brace being configured to be loaded into the channels.

106 . A minimally invasive surgical system as recited in claim 99 , wherein the first and second bone anchors are cannulated so as to fit over guidewires anchored in the bony structures.

107 . A minimally invasive surgical system as recited in claim 99 , wherein the brace is a spinal rod.

108 . A minimally invasive surgical system as recited in claim 99 , wherein the brace is a spinal rod that is curved between opposite first and second ends thereof.

109 . A minimally invasive surgical system as recited in claim 99 , wherein at least one of the first and second extensions includes indicia configured to indicate an orientation of the first and second passageways.

110 . A minimally invasive surgical system as recited in claim 99 , wherein the first and second extensions each include indicia configured to indicate an orientation of the first passageway relative to the second passageway.

111 . A minimally invasive surgical system comprising:
a brace; a first bone anchor having first yoke defining a first passageway configured to receive the brace; a first extension connected with the first bone anchor and configured to extend from the first bone anchor through the skin when the first bone anchor is driven in a bony structure such that a portion of the first extension extending above the skin defines a position of the first passageway; a second bone anchor having a second yoke defining a second passageway configured to receive the brace; and a second extension connected with the second bone anchor and configured to extend from the second bone anchor through the skin when the second bone anchor is driven in a bony structure such that a portion of the second extension extending above the skin defines a position of the second passageway, wherein the portion of the first extension extending above the skin is configured to be manipulated to move the first extension relative to the second extension from a first orientation in which the first passageway is not aligned with the second passageway to a second orientation in which the first passageway is aligned with the second passageway.

112 . A minimally invasive surgical system as recited in claim 111 , wherein the first bone anchor includes a head, the first yoke and the first extension being pivotable about the first head.

113 . A minimally invasive surgical system as recited in claim 111 , wherein the second bone anchor comprises a second head, the second yoke and the second extension being pivotable about the second head.

114 . A minimally invasive surgical system as recited in claim 111 , wherein the first bone anchor does not include multi-axial capabilities.

115 . A minimally invasive surgical system as recited in claim 111 , wherein the second bone anchor does not include multi-axial capabilities.

116 . A minimally invasive surgical system as recited in claim 111 , wherein the first and second bone anchors do not include multi-axial capabilities.

117 . A minimally invasive surgical system as recited in claim 111 , wherein the first and second extensions each include a channel, the brace being configured to be side-loaded into the channels.

118 . A minimally invasive surgical method comprising:
driving a first bone anchor into a bony structure; connecting a first extension with the first bone anchor such that the first extension extends from the first bone anchor through the skin; driving a second bone anchor into a bony structure; and connecting a second extension with the second bone anchor such that the second extension extends from the second bone anchor through the skin; positioning a brace within the second extension; and manipulating the first extension relative to the second extension to move the first bone anchor from a first orientation in which a first passageway of the first bone anchor is not aligned with a second passageway of the second bone anchor to a second orientation in which the first passageway is aligned with the second passageway.

Assignees

• Warsaw Orthopedic Inc

Inventors

• Justis Jeff R
• Sherman Michael C
• Foley Kevin T

Classifications

• A61B17/7089

  wherein insertion is along an arcuate path · CPC title

• A61B17/8897

  Guide wires or guide pins · CPC title

• A61B17/00234 Primary

  for minimally invasive surgery (A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence) · CPC title

• A61B17/88

  Osteosynthesis instruments;} Methods or means for implanting or extracting internal {or external} fixation devices {(A61B17/7074 takes precedence) · CPC title

• A61B17/1671

  for the spine · CPC title