141 results about "Sacro-iliac joint" patented technology

A stabilization implant comprising: an elongated body having a distal end, a proximal end and a longitudinal axis extending between the distal end and the proximal end, the elongated body being characterized by a superior body surface and an inferior body surface; a superior stabilizer extending outwardly from the superior body surface, the superior stabilizer being characterized by a first lateral superior stabilizer surface and a second lateral superior stabilizer surface; and an inferior stabilizer extending outwardly from the inferior body surface, the inferior stabilizer being characterized by a first lateral inferior stabilizer surface and a second lateral inferior stabilizer surface; wherein at least one of the first lateral superior stabilizer surface, the second lateral superior stabilizer surface, the first lateral inferior stabilizer surface, and the second lateral inferior stabilizer surface comprise at least one outwardly-extending tab.

Embodiments of the present invention relate generally to implant placement into bone. More specifically, embodiments of the invention relate to implant placement across the sacroiliac joint. Placement can be facilitated using various CT imaging views that allow the implants to be placed in bone associated with articular cartilage.

Methods are described for conducting minimally invasive medical interventions utilizing instruments and assemblies thereof to stabilize and / or fixate a dysfunctional sacroiliac (SI) joint. In one embodiment, a defect creation assembly is advanced from a posterior approach into the SI joint and configured to create pilot SI joint opening; portions of which being disposed in the sacrum and ilium bone structures. After the pilot SI joint opening is created, a prosthesis is press-fit into the pilot SI joint opening, wherein the pilot SI joint opening transitions to a larger post-prosthesis insertion SI joint opening and the prosthesis is securely engaged to the sacrum and ilium bone structures.

Systems, methods, and devices for sacroiliac joint fusion described include an implant comprising a first body having a distal anchor and a second body having proximal anchor. The first body includes a threaded body integrally formed with the first body or threadably coupled to the first body. The distal anchor may be formed by a pair of deployable wings. The pair of deployable wings may be deployed within the cancellous bone of the sacrum and anchored against the cortical bone of the sacrum. The proximal anchor may engage with an outer surface of the ilium. The second body may be threaded along the threaded body to provide compression across the sacroiliac joint. Compressing the sacroiliac joint can reduce motion thereof to promote fusion and stabilization.

A sacroiliac joint implant system includes a primary implant configured to be received in a sacroiliac joint of a patient and a secondary implant configured to couple with the primary implant. The primary implant includes a body extending from a proximal end to a distal end and a plurality of threads extending from the body. The secondary implant includes a first anchor configured to anchor within a sacrum of the patient and a second anchor configured to anchor within an ilium of the patient.

A sacroiliac joint implant system includes a primary implant configured to be received in a sacroiliac joint of a patient and a secondary implant configured to couple with the primary implant. The primary implant includes a body extending from a proximal end to a distal end and a plurality of threads extending from the body. The secondary implant includes a first anchor configured to anchor within a sacrum of the patient and a second anchor configured to anchor within an ilium of the patient.

The invention discloses a sacroiliac joint fixing device, and relates to the technical field of surgical instruments, the sacroiliac joint fixing device comprises an outer nail, an inner nail and a connector, threads are arranged on the peripheral wall of the outer nail, a containing hole is formed in the outer nail, a bolt head is arranged at the rear end of the outer nail, a plurality of open grooves are formed in the peripheral wall of the outer nail, the open grooves are communicated with the containing hole, and a porous structure is formed on the peripheral wall of the outer nail; the inner nail is arranged in the containing hole in a penetrating mode, the diameter of the inner nail is smaller than that of the containing hole, and the connector is detachably connected to the bolt head. The sacroiliac joint can be effectively fixed for a long time.

A stabilization implant comprising: an elongated body having a distal end, a proximal end and a longitudinal axis extending between the distal end and the proximal end, the elongated body being characterized by a superior body surface and an inferior body surface; a superior stabilizer extending outwardly from the superior body surface, the superior stabilizer being characterized by a first lateral superior stabilizer surface and a second lateral superior stabilizer surface; and an inferior stabilizer extending outwardly from the inferior body surface, the inferior stabilizer being characterized by a first lateral inferior stabilizer surface and a second lateral inferior stabilizer surface; wherein at least one of the first lateral superior stabilizer surface, the second lateral superior stabilizer surface, the first lateral inferior stabilizer surface, and the second lateral inferior stabilizer surface comprise at least one outwardly-extending tab.

A sacroiliac fusion implant device assembly has an implant body and a pair of bone fasteners. The implant body has a distal end and a proximal end with a longitudinal axis extending between a center of the distal end and a center of the proximal end. The distal end has cutting edges configured to cut tissue as the implant is pressed into a joint between a sacrum and an ilium. The proximal end has two bone fastener receiving apertures, each configured to receive a bone fastener and the implant body has a pair of sidewalls connecting the distal and proximal ends. The pair of bone fasteners can be a pair of threaded fasteners, or a pair of spike fasteners or a combination of one threaded fastener and one spike fastener.

An implantable device for sacroiliac (“SI”) joint fusion and an associated method employ an SI joint fusion portion and an anchor portion of smaller diameter than the SI joint fusion portion and that extends distally from a distal end of the SI joint fusion portion. The SI joint fusion portion is externally threaded and is configured to, when surgically implanted, extend across the SI joint. The anchor portion in turn extends distally from the SI joint fusion portion and is configured for implanting entirely within the patient's ilium adjacent the SI joint. In certain configurations, the joint fusion portion is configured to enable fixation of spinal equipment at a proximal end of the joint fusion portion. A stabilizing driver is additionally provided to aid in placement of the device when obstructions are present.

Threaded bone implants, such as pedicle screws, are provided with an elongate body comprising a first portion, a second portion distal to the first portion, and a third portion distal to the second portion. The first, second and third portions may be provided with different features that correspond to first, second and third anatomical regions of interest in a vertebrae or other bone segment(s). The bone implants, systems, methods of manufacture, and methods of use disclosed herein may be used for the stabilization, fixation and / or fusion of the sacroiliac joint, the spine and or other bone segments.

The present invention relates generally to implants and tools for the fixation or fusion of joints or bone segments. These tools include tissue dilators and protectors. Other tools include broaches used to shape bores in bone. The tools can also include a system for removing an implant from bone. Implants can include assemblies of one or more implant structures that make possible the achievement of diverse interventions involving the fusion and / or stabilization of lumbar and sacral vertebra in a non-invasive manner, with minimal incision, and without the necessitating the removing the intervertebral disc. Implants for fusing both sacroiliac joints of a patient include a long implant that extends across both sacroiliac joints.

The invention discloses an improved wedging cage within the sacroiliac (SI) joint and fixation screw(s). The wedging cage is adapted to be positioned between the sacrum and the lilac bone (e.g., the sacroiliac joint), and the wedging cage is effective to receive one or more fixation or axial screws to fasten the wedging cage and secure the wedging cage to the adjacent pelvic bones to provide a combination effect of fusion and / or fixation. Accordingly, the improved fixation screw assemblies promote flexibility and adaptability due to the adjustable head being movable to a locked and unlocked position relative to the screw body when implanted onto a substrate.

Threaded sacro-iliac joint stabilization (e.g., fusion, fixation) implants and methods of implantation and manufacture. Some implants include a threaded distal region, an optionally threaded central region, and an optionally threaded proximal region. The distal, central, and proximal regions have lengths such that when the implant is laterally implanted across a SI joint, the distal region can be positioned in a sacrum, the central region can be positioned across an SI-joint, and the proximal region can be positioned in an ilium.

In some embodiments, an implant configured to span a joint between a first bone and a second bone may include a proximal end configured to reside in the first bone, a distal end including threads configured to reside in the second bone distal to the first bone in response to rotation of the implant about an axis of rotation, an axis extending between the proximal end and the distal end, and an exterior surface extending from the proximal end to the distal end. The exterior surface may include a first recess formed therein. The first recess may include an undercut such that the first recess has a first perimeter at an exterior of the first recess, and a second perimeter, greater than the first perimeter, at an interior of the first recess, wherein the interior is closer to the axis than the exterior.

The utility model relates to a universal intramedullary nail for pelvis percutaneous internal fixation, which belongs to the technical field of orthopedic medical instruments and is characterized in that the tip of the universal intramedullary nail is a three-blade tip; a hollow channel is formed in the general intramedullary nail, penetrates through the two ends of the general intramedullary nail and is used for allowing a guide needle to penetrate through; threads are arranged on the outer wall of the universal intramedullary nail, and the sparse degree of the threads gradually changes from the nail tail of the universal intramedullary nail to the three-blade tip end to form gradually-changed threads. The general intramedullary nail for pelvic percutaneous internal fixation is widely applied to percutaneous nail placement internal fixation operations and is used for penetrating pelvic bones except for suprapubis ramus and part of iliac, including inferior pubis ramus, ischium, iliac, sacroiliac joints and sacroiliac vertebral bodies.

A sacroiliac (SI) joint implant assembly addresses SI joint dysfunction and degenerative sacroiliitis. The assembly includes a first implant body, a second implant body, and a piezoelectric layer positioned between them. The piezoelectric layer generates electrical charges when subjected to mechanical stress, stimulating bone growth and enhancing stability of the SI joint after surgery. The implant bodies may feature non-planar surfaces to distribute compressive and shear forces unevenly across the piezoelectric layer. The assembly can be secured using fasteners such as screws, pins, or brackets, and may include porous or fenestrated bodies made from materials like titanium or polymers. Some implant assemblies are designed for minimally invasive surgical procedures, with configurations that allow for precise placement using guide wires and imaging techniques. The assembly aims to stabilize the SI joint and promote bone fusion, leveraging the piezoelectric effect to improve the overall efficacy of the fusion procedure.

The present invention generally relates to bone implants. More specifically, the present invention relates to bone implants used for the fixation or fusion of the sacroiliac joint and / or the spine. For example, a system for fusing or stabilizing a plurality of bones is provided. The system includes an implant structure having stem portion and a head portion, the stem portion having a rectilinear cross sectional area. A tulip or saddle structure can be attached to the head portion, and a rod can be secured within the tulip or saddle structure.

The present disclosure provides systems including a cannulated surgical drill tool with electrical conductivity sensing capabilities, and surgical techniques for using such tools in minimally invasive surgical procedures for accessing the SI joint via a posterior approach using an electrical conductivity feedback to facilitate accurate placement into or across the SI joint. For example, the cannulated surgical drill tool may include one or more pairs of electrodes at its distal penetration tip configured to measure electrical conductivity of tissue in contact with the distal tip during a drilling procedure and may emit an alert indicative of the measured electrical conductivity, and accordingly, the type of tissue in contact with the distal tip of the cannulated surgical drill tool, in real-time.

A surgical fixation assembly and related method of fusing a sacroiliac joint are described herein. The surgical fixation assembly includes a compression member, a stabilizer, and a locking element. The compression member is rotatably implantable into two bone segments separated by a joint. The stabilizer is configured for coupling with the compression member in situ after implantation of the compression member and prevents rotation of the compression member after implantation. The locking element is provided on the stabilizer and is moveable from a first position that allows coupling of the stabilizer and compression member to a second position that prevents uncoupling of the stabilizer from the compression member.

A sacroiliac joint stabilization system may be configured to stabilize a sacroiliac joint. The sacroiliac joint stabilization system may include a fastener having a threaded portion, and an implant having a body including a body height and an aperture extending along the body height, a first wing, a second wing, a third wing, and a fourth wing. The first wing, the second wing, the third wing, and the fourth wing may be arranged relative to each other to define an X shape, the threaded portion may be configured to advance through the aperture and engage a sacrum and an ilium, the first wing and the second wing may be configured to be embedded in the sacrum, and the third wing and the fourth wing may be configured to be embedded in the ilium.

Implants for the fusion or fixation of two bone segments are described. For example, the implants can be used for the fusion or fixation of the sacroiliac joint. The implants can have a matrix structure, have a rectilinear cross-sectional area, and have a curvature.

The invention relates to the technical field of medical instruments, and discloses a locking device for unstable sacroiliac joint and sacrum fracture.The locking device comprises a support and a side plate, the inner wall of the support is slidably connected with a first vertical stud, the top of the first vertical stud is fixedly provided with a first movable bin, and the inner wall of the first movable bin is rotatably provided with a rotating ball; a pin is fixedly installed on the inner wall of the rotating ball, a plurality of adjusting holes are evenly formed in the top of the side plate, a gear is fixedly installed on the top of the side plate, and a winding wheel is fixedly installed on the top of the gear. A rolling wheel and a gear are driven to rotate by rotating a protrusion, then a pull rope can be used for dragging an abutting ball to move on the inner wall of a circular groove, locking of a sliding strip is relieved, meanwhile, the gear rotates to drive the sliding strip to slide on the inner wall of a sliding groove through an arc-shaped tooth row, and therefore the position of a locking plate is adjusted; and therefore, after the bracket is positioned, the position of the locking plate can be conveniently adjusted to lock different positions.

A sacroiliac joint implant includes an implant structure formed from an elongated base member, a forward end structure, an elongated first side member, and an elongated second side member, with an internal support structure extending in an implant plane. A fusion passage is defined in an area between the base member, first side member, and second side member. The fusion passage defines a respective open area through the implant to facilitate bone growth across the sacroiliac joint when the implant is properly implanted in the joint.

Prostheses and methods are described for stabilizing dysfunctional sacroiliac (SI) joints. The prostheses are configured to be advanced into dysfunctional SI joints in a posterior trajectory via surgically created pilot SI joint openings in the dysfunctional SI joint. The prostheses have first and second elongated edge sections, and a third elongated section disposed centrally between the first and second elongated sections. The prostheses also have a first bridge sections disposed between and connected to the first and third elongated sections and a second bridge section disposed between and connected to the second and third elongated sections.

Bone implants, assemblies, and methods thereof. The implants may include non-threaded triangular implants configured to promote fixation and fusion of the sacroiliac joint. The implants may have a triangular body configured to prevent or minimize rotational motion of the implant. The implants may include an inner core or an outer shell, which provides structural support for a lattice structure. The structural geometry may be generated through topology optimization software, such as finite element analysis, based on anatomical loading conditions for the implant.

An anchor has a straight centerline and straight splines extending radially while running parallel thereto. Splines extend radially from a core penetrated by a channel to fit over a K-wire guide, and axially along the length of the elongate, cylindrical core. The center line passes along the center of a lumen or channel of the hollow core, while the splines extend radially outward from, and axially along the length of the core except along a conical taper near a leading or point end of the anchor. Installation may be from a posterior access or a lateral-posterior access, each anchor fixing two bones in at least one, but usually two, degrees of freedom. Multiple anchors may fix in all six degrees of freedom (three degrees of freedom in translation along three mutually orthogonal axes, and three degrees of freedom of rotation about those same axes).

A machine-based learning system for predicting the presence of lesions indicative of axial spondyloarthritis in medical imaging data includes an image processor for receiving and processing one or more MRI image data set containing pelvic region and sacroiliac joint of a subject, and dividing said MRI image data set into a set of 3D voxels. The system also includes a voxel classifier for calculating for each of said the voxels one or more class probabilities of such voxel to contain a lesion of a particular type or being a non-lesion. The system also includes a lesion probability map generator for receiving the data produced by the voxel classifier and producing a probability intensity map for each of lesion types, in which one or more areas classified as lesion are highlighted; and an image display for displaying the output of the lesion probability map generator.

A drill-less method of stabilizing a sacroiliac joint using a multimodal abrading device to create a rich environment for bony fusion. The unique decortication instrument includes an integral slap hammer assembly joined with a rasp-box osteotome tooling head to simultaneously remove cartilage from the joint while preparing the sacrum and ilium down to bleeding bone. Subsequent to joint preparation, an implant with a large bone graft window may be implanted into the prepared SI joint through a specially designed access cannula.

A method for forming and abrading an implant void in a sacroiliac joint (“SI Joint”) without the use of a rotary cutting instrument. The method incorporates a multimodal abrading device having abrading surfaces on opposing sides, an open tip having a leading edge defining an enclosed oblong perimeter, and a cutting edge disposed at the leading edge of the open tip. The method includes the step of using the abrading head to cut bone tissue from the SI Joint at an insertion point while simultaneously using the abrading surfaces to decorticate the cortical bone at the insertion point.