62 results about "Sacrum bone" patented technology

Methods of stabilizing the sacroiliac joint by placing an expandable device in the joint to generate laterally opposing forces against the iliac and sacral surfaces of the SI joint to securely seat the device in a plane generally parallel to the SI joint. The expandable device is coated with or otherwise contains a bone material to promote fusion of the joint. The expandable device used in methods of the present invention can be, for example, an expandable cage, a balloon, a balloon-expandable stent or a self-expanding stent.

Procedures for the fusion of the sacroiliac joint advantageously make use of an implant selected to distract the joint upon insertion and to maintain or increase tension upon insertion. The implant can have a varying structure along its length. In some method described herein for fusing the sacroiliac joint using an implant, an implant is screwed into the sacroiliac joint between the sacrum bone and the iliac bone. The implant comprises a shaft, a tool engagement flange at top end of the shaft, a pointed tip comprising no more than about 20 percent of the length of the screw, and threads spiraling around the shaft. For screws of particular interest, the volume displacement perpendicular to the shaft increases at least about 5 percent from a point adjacent the tip to a point near the top of the shaft. Some of the desirable screw designs can be used in other orthopedic application, especially situations involving varying bone hardness. Useful filler material can be formed from a blend of bone powder and bioactive agents.

A method for treating back pain by stabilizing the sacroiliac joint. The method includes fusing a sacrum bone to an ilium bone or otherwise mechanically immobilizing the sacroiliac joint by inserting at least two implants into voids formed within or between the articular surfaces of each sacroiliac joint of a patient without substantially distracting the joint. The voids are arranged within each joint at either a converging orientation or a diverging orientation. A kit containing the implants and tools required to insert the implants into the joint are also described.

An anchor device for use in sacroiliac joint stabilization comprises a housing having a bore, one or more apertures, and a threaded outer surface, one or more engagement members at least partially disposed in the housing, where at least one of the one or more engagement members is movable between a retracted position and an extended position such that, when the at least one of the one or more engagement members is in the extended position, the at least one of the one or more engagement members extends through at least one of the one or more apertures, and where, when the at least one of the one or more engagement members is in the extended position, the at least one of the one or more engagement members is configured to engage a cortical wall of a sacrum bone.

The invention discloses a personalized artificial sacrum prosthesis based on additive manufacturing, and relates to the field of medical instruments. The personalized artificial sacrum prosthesis based on additive manufacturing comprises a T-shaped main body and locking pieces, wherein the T-shaped main body comprises a longitudinally arranged bearing area and a connecting area transversely arranged below the bearing area. The personalized artificial sacrum prosthesis comprises the main body and the locking pieces, bears the lumbar vertebra and the pelvis and has high strength, high matching degree with a reconstruction area and natural bearing stability; screw fixing positions are accurate and sufficient, the bone mass of screw placing parts is rich, and the firmness is higher; A lightweight design concept is adopted, and the weight of an implant is reduced as much as possible on the premise of ensuring the strength of vertebral bodies; due to the arc design, a nerve root walking channel is reserved, and sacral nerve clamping and pressing are avoided; and the bone contact surface is rough and porous, instant stability and bone ingrowth are facilitated to form biological internal fixation, and personalized accurate reconstruction of a sacrum total incision bone defect area can be realized through detailed preoperative planning.

A method of treating prolapse of a vagina includes supporting the vagina by implanting a sacrocolpopexy support and locating an exterior surface of the vagina between leg portions of a vaginal cuff section of the support, and securing a head section of the support to a ligament or a sacrum while isolating the head section from contact with tissue of the vagina.

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.

The invention discloses a testing method for lumbar vertebra stretching and buckling angles. The stretching and retracting angles comprise a stretching-position stretching angle alpha1 and a buckling-position buckling angle alpha2, an included angle between a plane built by upper portions of the mesosternum and the sacrum of a testee and a perpendicular plane is the stretching-position stretching angle alpha1, an included angle between a plane built by upper portions of a symphysis pubis position and shoulder blades on two sides of the testee and a perpendicular plane is the buckling-position buckling angle alpha2, a horizontal measuring device and a perpendicular measuring device are fixed or shifted to measure the alpha1 and the alpha2 of the testee. The invention further discloses application of the testing method in lumbar vertebra functional-position radiography. The functional positions of the lumbar vertebrae of patients can be determined by adjusting the horizontal measuring device and the perpendicular measuring device according to lumbar vertebra stretching and buckling angle values of different individual patients, subjective randomness of the patients when the lumbar vertebra functional positions are fixed is reduced, and the radiographic quality of the lumbar vertebra functional positions is guaranteed.

Systems are described for conducting minimally invasive medical interventions utilizing instruments and assemblies thereof to stabilize and/or fixate a dysfunctional sacroiliac (SI) joint. The systems include a drill guide adapted to create a pilot SI joint opening in the dysfunctional SI joint through an incision comprising a length no greater than 3.0 cm; portions of the pilot SI joint opening being disposed in the sacrum and ilium bone structures. The drill guide includes a tri-mode fixation system adapted to position and stabilize the drill guide during creation of the pilot SI joint opening in the dysfunctional SI joint and delivery of the SI joint prosthesis therein. The systems also include a SI joint prosthesis configured to be inserted into the pilot SI joint opening of the dysfunctional SI joint, and a prosthesis deployment assembly configured to engage the SI joint prosthesis and advance the SI joint prosthesis into the dysfunctional SI joint.

The invention discloses a traumatic sacroiliac joint dislocation closed reduction and minimally invasive bionic rational internal fixation system (i.e., a surgical instrument) and a use method thereof. The system is divided into a reduction system, an aiming system and a fixation system, and has the characteristics that: 1, the internal fixation system is a three-dimensional bone traction sacroiliac joint closed reduction system under the assistance of a reduction outer frame at a prone position; 2, a sacrum rod type screw implantation aiming system in the system is a minimally invasive precise aiming system taking the screw tail of a long-tail universal pedicle screw as a joint point; and 3, a sacrum rod type screw in the system is combined with pedicle screws of the sacrum 1 and the sacrum 2 to fix the sacroiliac joint, the fixation mechanism is similar to a suspension bridge type physiological stability mechanism of the sacroiliac joint, and the internal fixation system is a bionic rational fixing system. According to the invention, early, safe, effective and minimally invasive surgical treatment can be provided for traumatic sacroiliac joint dislocation and partial sacrum fracture patients, and surgery can be carried out in primary hospitals. The internal fixation system plays an important role in improving the cure rate of pelvic fracture and reducing the disability rate and the death rate of pelvic fracture.

An apparatus for installing a fusion implant into the sacroiliac joint (“SI Joint”). The apparatus comprises a working channel, a joint locator, an abrading device, and an insertion device. The joint locator is inserted into the working channel, and this combination, guided by a K-wire, is advanced into the SI Joint. The joint locator is removed, and the abrading device is used to abrade the sacrum and ilium inside the SI Joint. The insertion device then advances the implant into the abraded area of the SI Joint. The abraded area heals across the implant, thereby fusing the sacrum to the ilium and fusing the SI Joint.

The invention relates to a biological plasticized specimen capable of being opened from back to display the visceral positional relationship, and a preparation method thereof, and belongs to the technical field of biological plasticization. The preparation method comprises the following steps: 1, breaking ribs of a preservative-treated human body specimen from the back to expose visceral organs from the back, separating the sacrum and the hip bone at the sacroiliac joint in a manner of complete separation at one side and ligament reservation at the other side, bleaching the human body specimen, soaking the dissected human body specimen in an acetone solution for 60-80 d, putting the dehydrated and degreased human body specimen in a mixed solution of silica gel and a silica gel catalyst ina vacuum pressure cabin, standing for 50-60 d, adjusting the pressure of the vacuum pressure bin from 0.1-0.3 kPa to 0.9-1.2 kPa during standing, shaping and repairing the impregnated human body specimen, putting the human body specimen in a curing box, and curing the human body specimen by using organic peroxide and aliphatic nitrogen compound steam to obtain the biological plasticized specimen.The biological plasticized specimen displays the shape and position relation of visceral organs from the back, so later specimen observation is facilitated.

Presently disclosed is a sacroiliac joint implant. In an embodiment, a sacroiliac joint implant includes a porous body configured to promote bone growth. The porous body may have a window that is configured to hold a graft material. The porous body may also include a first face and second face configured to contact the sacrum and the ilium of the sacroiliac joint when the implant is maintained in compression within the sacroiliac joint.