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US 2018/0280090 A1Published application
Reduction Methods for Aligning Bone Segments using Customized Jigs
OwnerJohn Adam Davies, Albert Charles Lynchinventors
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Abstract
Methods for aligning bone segments using custom jigs are disclosed. In one technique, bone segments are aligned using interaction elements, imaging, virtual fracture alignment, and a custom jig. The custom jig can be generated using a rapid fabrication method such as via the use of a three-dimensional printer. The methods can be minimally invasive or noninvasive. The interaction elements can be percutaneous interaction pins or noninvasive interaction elements.
Claims24
A reduction method for aligning a first bone segment and a second bone segment comprising:
- surgically attaching:
- (i) a first interaction implant to the first bone segment;
- and (ii) a second interaction implant to the second bone segment;
- imaging the first and second bone segments to create a model;
- processing the model to find an optimal bone alignment;
- generating, based on the optimal bone alignment and with a three-dimensional printer, a custom jig, wherein the custom jig includes a global jig element, a first local jig element, and a second local jig element;
- attaching the first local jig element to the first interaction implant;
- attaching the second local jig element to the second interaction implants;
- and
- engaging, after attaching the custom jig to the first and second interaction implants, the first and second local jig elements with the global jig element;
- wherein the first and second bone segments are translated as the first and second local jig elements are engaged with the global jig element;
- and
- wherein the first bone segment and second bone segment are properly aligned in the optimal bone alignment.
10 more elements
The method of claim 2, wherein:
- the first and second bone segments are aligned according to the optimal bone alignment when the first and second local jig elements are fully engaged with the global jig element.
The method from 1, further comprising:
- surgically attaching a first set of interaction pins to the first bone segment, wherein surgically attaching the first set of interaction pins includes surgically attaching the first interaction pin to the first bone segment, and wherein the first interaction pin is in the first set of interaction pins;
- surgically attaching a second set of interaction pins to the first bone segment, wherein surgically attaching the first set of interaction pins includes surgically attaching the first interaction pin to the first bone segment, and wherein the first interaction pin is in the first set of interaction pins;
- that are penetrates a medullary cavity of the first bone segment;
- wherein none of the pins in the first and second sets of interaction pins penetrate the medullary cavity;
- wherein the first set of interaction pins are connected by a first ring that surrounds the first bone segment when the first set of interaction pins are attached to the first bone segment;
- wherein the second set of interaction pins are connected by a second ring that surrounds the second bone segment when the second set of interaction pins are attached to the second bone segment;
- and
- wherein the attaching of the custom jig to the first and second interaction implants consists of:
- (i) attaching the first interaction implant to the first local jig element via the first ring;
- and (ii) attaching the second interaction implant to the second local jig element via the second ring.
7 more elements
A reduction method for aligning a first bone segment and a second bone segment comprising:
- surgically attaching:
- (i) a first interaction implant to the first bone segment;
- and (ii) a second interaction implant to the second bone segment;
- imaging the first and second bone segments to create a model;
- processing the model to find an optimal bone alignment;
- generating, based on the optimal bone alignment and with a three-dimensional printer, a custom jig, wherein the custom jig includes a global jig element and at least one local jig element;
- attaching the custom jig to the first and second interaction implants;
- and
- engaging, after attaching the custom jig to the first and second interaction implants, the at least one local jig element with the global jig element;
- wherein at least one of the first and second bone segments are translated as the at least one local jig element is engaged with the global jig element;
- and
- wherein the first bone segment and second bone segment are properly aligned in the optimal bone alignment.
9 more elements
The method from 17, wherein:
- the at least one local jig element includes a first local jig element and a second local jig element;
- the at least one recess includes a first recess and a second recess;
- the custom jig includes the first local jig element, the second local jig element, and the global jig element;
- and
- the first and second bone segments are aligned according to the optimal bone alignment when:
- (i) the first local jig element is fully engaged with the first recess;
- and (ii) the second local jig element is fully engaged with the second recess.
4 more elements
The method from 19, further comprising:
- surgically attaching a first set of interaction pins to the first bone segment, wherein surgically attaching the first set of interaction pins includes surgically attaching the first interaction pin to the first bone segment, and wherein the first interaction pin is in the first set of interaction pins;
- surgically attaching a second set of interaction pins to the first bone segment, wherein surgically attaching the first set of interaction pins includes surgically attaching the first interaction pin to the first bone segment, and wherein the first interaction pin is in the first set of interaction pins;
- that are penetrates a medullary cavity of the first bone segment;
- wherein none of the pins in the first and second sets of interaction pins penetrate the medullary cavity;
- wherein the first set of interaction pins are connected by a first ring that surrounds the first bone segment when the first set of interaction pins are attached to the first bone segment;
- wherein the second set of interaction pins are connected by a second ring that surrounds the second bone segment when the second set of interaction pins are attached to the second bone segment;
- and
- wherein the attaching of the custom jig to the first and second interaction implants consists of:
- (i) attaching the first interaction implant to the first local jig element via the first ring;
- and (ii) attaching the second interaction implant to the second local jig element via the second ring.
7 more elements
A reduction method for aligning a first bone segment and a second bone segment comprising:
- attaching:
- (i) a first interaction element to the first bone segment;
- and (ii) a second interaction element to the second bone segment;
- imaging the first and second bone segments to create a model;
- processing the model to find an optimal bone alignment, wherein the first bone segment and second bone segment are aligned in the optimal bone alignment;
- generating, with a three-dimensional printer, a custom jig;
- and
- guiding the first and second interaction elements with the custom jig;
- wherein the first and second bone segments are aligned according to the optimal bone alignment when the first and second interaction elements are guided to a reduction stop on the custom jig.
6 more elements
Dependencies are inferred from the claim text.