Implant placement
Inventors
RECKLING, W. Carlton • Reiley, Mark A. • Yerby, Scott A. • FARLEY, Sean • Leung, Joanne
Assignees
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Publication Number
US-12220326-B2
Publication Date
2025-02-11
Expiration Date
Abstract
Embodiments of the present invention relate generally to implant placement into bone. More specifically, embodiments of the invention relate to implant placement across the sacro-iliac joint. Placement can be facilitated using various CT imaging views that allow the implants to be placed in bone associated with articular cartilage.
Core Innovation
The invention relates to a method of implanting a first, second, and third implant in a sacroiliac joint ("SI-joint") for a dysmorphic long sacrum, targeting an anterior portion of the SI-joint associated with articular cartilage. The method inserts a plurality of guide pins into an anterior portion of the SI-joint associated with articular cartilage, creates a bore around each guide pin, and inserts an implant into each bore so that each implant is located in an anterior portion of the SI-joint associated with articular cartilage. Implant positioning is defined by cephalad/middle/caudal placement, with the first implant being the middle placed implant, the second implant being the most cephalad placed implant, and the third implant being the most caudal placed implant.
The invention further relates to a method for implanting a first, second, and optional third implant in a sacroiliac joint ("SI-joint") with a dysmorphic short sacrum, also targeting an anterior portion of the SI-joint associated with articular cartilage. The method likewise inserts a plurality of guide pins into the anterior portion associated with articular cartilage, creates a bore around each guide pin, and inserts an implant into each bore so that each implant is located in an anterior portion of the SI-joint associated with articular cartilage. The implant order is defined as first being the most cephalad placed implant, second being the middle placed implant, and optional third being the most caudal placed implant, with the optional third implant only placed after determining that enough room for the optional third implant exists under an outlet view.
In the described implementation, CT/fluoroscopic imaging-guided implant placement uses lateral, inlet, and outlet views for targeting, including identification of sacral anatomical landmarks such as an alar line, posterior sacral body lines, anterior sacral body lines, and the anterior cortex of the sacral ala. An implant target zone is defined and implant trajectories/angles are constrained by view-dependent guidance. The guidance supports multi-implant placement across the SI-joint using guide-pin insertion and bore creation around the guide pins, with implant advancement under fluoroscopy.
Claims Coverage
The partial content includes two independent claims (clm-00001 and clm-00002). Each independent claim defines an implanting method using guide pins and bores into anterior portions of the SI-joint associated with articular cartilage, with a defined cephalad/middle/caudal placement order and special handling based on dysmorphic long vs dysmorphic short sacra.
Anterior articular cartilage-associated SI-joint implantation for dysmorphic long sacrum with ordered middle/cephalad/caudal placement
A method of implanting a first, second, and third implant in a sacroiliac joint ("SI-joint") with a dysmorphic long sacrum by inserting a plurality of guide pins into an anterior portion of the SI-joint associated with articular cartilage, creating a bore around each guide pin, and inserting an implant into each bore such that each implant is located in an anterior portion of the SI-joint associated with articular cartilage, where the first implant is the middle placed implant, the second implant is the most cephalad placed implant, and the third implant is the most caudal placed implant.
Anterior articular cartilage-associated SI-joint implantation for dysmorphic short sacrum with ordered cephalad/middle/optional caudal placement and outlet-view room determination
A method of implanting a first, second, and optional third implant in a sacroiliac joint ("SI-joint") with a dysmorphic short sacrum by inserting a plurality of guide pins into an anterior portion of the SI-joint associated with articular cartilage, creating a bore around each guide pin, and inserting an implant into each bore such that each implant is located in an anterior portion of the SI-joint associated with articular cartilage, where the first implant is the most cephalad placed implant, the second implant is the middle placed implant, and the optional third implant is the most caudal placed implant, and where the optional third implant is only placed after determining that enough room for the optional third implant exists under an outlet view.
Across both independent claims, the core claimed coverage is implantation of first/second/third (or optional third) implants into anterior portions of the SI-joint associated with articular cartilage using guide pins and bores, with the implant order defined by cephalad/middle/caudal placement, and with an outlet-view room determination limiting the optional third implant placement for the dysmorphic short sacrum case.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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