476 results about "Bone block" patented technology

A sleeve and loop knotless suture anchor assembly for attachment of tissue to bone mass. The assembly includes a hollow anchoring sleeve with a suture loop attached thereto and an anchor device for capturing the loop with a snag element or recess thereon or therein the anchor device. Once the loop is captured, the anchor is inserted securely into the hollow anchoring sleeve which is installed in the bone mass which facilitates a repair of the torn away soft tissue.

A free loop knotless suture anchor assembly for attachment of tissue to bone mass. The assembly includes a continuous suture loop and an anchor means for capturing portions of the loop with a snag means or recess thereon or therein the anchor means. Once the loop is captured, the anchor is inserted securely into a bone mass which facilitates in a repair of the torn away soft tissue.

A one-piece or two-piece knotless suture anchor assembly for the attachment or reattachment or repair of tissue to a bone mass. The assembly allows for an endoscopic or open surgical procedure to take place without the requirement of tying a knot for reattachment of tissue to bone mass. In one embodiment, a spike member is inserted through tissue and then inserted into a dowel-like hollow anchoring sleeve which has been inserted into a bone mass. The spike member is securely fastened or attached to the anchoring sleeve with a ratcheting mechanism thereby pulling or adhering (attaching) the tissue to the bone mass.

The invention is directed toward a bone block, a bone-tendon-bone assembly and method of tendon reconstruction in which at least one tendon replacement is extended between two bone blocks and fixed within each of two bone tunnels in the bones of a joint using interference screws. Each bone block has a central through going bore and at least one substantially parallel channel longitudinally cut in the exterior of the bone block body in which the ligament replacements are seated. One end of each bone block has a rounded recess leading from the central bore to the exterior parallel channel.

Disclosed herein is processed dermis graft for use in orthopedic surgical procedures. Specifically exemplified herein is a processed dermis graft comprising one or more bone blocks having a groove cut into the surface thereof, wherein said groove is sufficient to accommodate a fixation screw. Also disclosed is a method of processing dermis that results in a dermis derived implant suitable to replace a tendon or ligament in a recipient in need thereof. Other compositions and applications of a dermis derived implant, and methods of manufacture and use, are disclosed.

The present invention has multiple aspects relating to assembled self fixing bone-tendon-bone (BTB) grafts and BTB implants. A preferred application in which self fixing assembled bone-tendon-bone (BTB) grafts and implants of the present technology can be used is for ACL repairs in a human patient. In one embodiment, a self fixing BTB graft is characterized by the presence of threads along at least a portion of the exterior surface of one or both bone blocks. In another embodiment, a self fixing assembled bone-tendon-bone implant comprises a removable tendon tensioner which imparts a predetermined tension on the tendon of the BTB graft. In this embodiment, the tensioner can be narrower than the diameter of the bone blocks or can be threaded such that the threads are continuous with the threads of at least one of the bone blocks. The threads facilitate the simultaneous implantation of the leading and trailing bone blocks of the BTB graft in tapped (threaded) holes in the tibia and the femur of a recipient patient. The tensioner maintains the tension on the tendon and the spacing between the bone blocks until the leading bone block is fixed (threaded) in the tapped hole in the femur and the trailing bone block is fixed (threaded) into the tapped tibial bone tunnel. Once the bone blocks are substantially in their fixed positions, the tensioner is removed arthroscopically in the joint space between the tibia and the femur.

A bioabsorbable implantable device for replacing sutures in construction of a composite graft in ligament replacement surgery. In certain embodiments the device has a female component and a male component where the female component receives and secures the male component. In other embodiments the components of the device are in the shape of a rivet or a staple. The bioabsorbable implantable devices can be used for securing tendon grafts to bone blocks and for holding together the fibers of the tendon graft when the bone-tendon-bone graft is inserted into a patient during surgery. The bioabsorbable implantable device may also be part of a package for use in surgery. The package includes a sterile container for holding at least a graft that is of a predetermined length and width. The package may also include bone blocks. The package is marked as to the graft size including the width and the length of the graft. The graft and the bone blocks may be autogenous, allogenic or constructed from man-made materials.

The present invention has multiple aspects. In its simplest aspect, the present invention is directed to an intermediate bone block comprising a machined segment of cortical bone, cancellous bone or both, the intermediate having a face comprising one to ten compression surfaces and one to ten cavities, the compression surfaces suitable for compressing soft tissue, the cavities for receiving and holding overflow soft tissue. The cavities are preferably channels, and more preferably channels having an omega cross-sectional profile. Surprisingly, the cavities and channels, which reduced the compressed surface area between the intermediate bone block and the tendon, significantly improved tendon load at failure. In standardized tests, an intermediate bone block of this invention, when combined with high surface area bone blocks of the prior art bone blocks, unexpectedly increased their load at failure. The invention is also directed to bone block assemblies suitable for binding to a soft tissue to form an implantable graft, and to such implantable grafts. A particularly preferred graft is a bone-tendon-bone graft.

A graft fixation device, system and method are disclosed for reconstruction or replacement of a ligament or tendon preferably wherein a soft tissue graft or a bone-tendon-bone graft is received and implanted in a bone tunnel. The graft fixation system includes a fixation device comprising a threaded body which is rotatably connected to a graft interface member. One embodiment of the implant/graft interface member includes an enclosed loop for holding a soft tissue graft. Another embodiment of the interface member includes a bone cage comprising a cage bottom and removable cage top to hold a bone block at one end of a bone-tendon-bone (BTB) graft. An additional embodiment of the interface member includes a one-piece bone cage which may be crimped or stapled to a bone block. The fixation device holds a graft in centered axial alignment in a bone tunnel. The body portion of the fixation device may be turned without imparting substantial twist to a graft attached to the device, due to the rotatable coupling between the threaded body and the interface member. The fixation device may be installed using a driver tool that has a shaft and an outer sleeve, wherein the driver may be used to twist the fixation device and independently exert a pushing or pulling force thereto. The graft fixation method may be used to install a fixation device by pulling or pushing it into a prepared bone tunnel while minimizing the possibility of abrasion or other damage to a graft attached to the fixation device.

A method for inserting a bone block into a patient's intervertebral space, comprising: supporting the bone block in an inserter; advancing the inserter into the intervertebral space; rotating the inserter, thereby separating adjacent vertebrae; separating the bone block and the inserter with a push rod; and removing the inserter from the intervertebral space.

This invention provides a surgical method to treat hip diseases, including Legg-Calve-Perthes disease or developmental hip dysplasia. This method includes several surgical techniques: a transverse osteotomy of the posterior portion of supraacetabular portion, an oblique and inclined osteotomy of the anterior portion of the supraacetabulum, detachment of a bone block from iliac crest, anterolateral displacement of the distal fragment, and insertion of the bone block into the distracted space of the osteotomy site.

A spinal vertebral implant includes a substantially rectangular shaped base section made from a solid piece of bone. A nose section extends integrally from the substantially rectangularly shaped base section and preferably has a generally tapering shape to foster entry between adjacent vertebrae. The nose section tapers distally and inwardly from the base section to form a generally pointed or rounded distal tip portion and comprises a solid piece of bone. Serrated sides assist the implant in gripping adjacent upper and lower vertebrae and in being maintained therebetween. The serrated sides are angled in a manner that encourages the implant to be placed between the vertebrae and locked therebetween upon such placement. First and second implants may be placed into respective left and right sides of an intervertebral space. A method for placing one or more implants between the adjacent vertebrae comprises forming a slot configured to receive an implant and inserting the implant into the slot. Each slot is preferably formed from an upper slot portion and a lower slot portion in the posterior portion of adjacent upper and lower vertebrae, respectively. Instruments for performing the method include osteotomes, impactors, and spacers.

Disclosed is a combined intramedullary and extramedullary bone stabilization and alignment system, which includes both methods and apparatuses for the alignment and stabilization of a first bone or piece of bone to a second bone or piece of bone. Embodiments of the system may include an implant device which has an elongated framework within intramedullary portion and an extramedullary portion which are cannulated. The cannulated aspect of the framework includes a wire aperture through both the intramedullary portion and the extramedullary portion.

A surgical method for transosseous fixation of a bone-tendon-bone (BTB) graft into a joint is disclosed. A longitudinal tunnel formed in a bone is intersected by a transverse pin. A flexible strand is drawn with the pin through the bone. A portion of the strand is diverted so as to protrude out of the entrance to the longitudinal tunnel. The strand portion is attached to a loop extending from the bone block of the BTB graft, preferably by forming the loop around the strand. The strand attached to the bone block loop is retracted into the tunnel, drawing the attached BTB graft into the tunnel. The BTB graft is fixed in the tunnel using a transverse implant passed through the loop.

A meniscal allograft with a bone block having a trapezoidal shape in cross-section and a technique for using a meniscus allograft having a trapezoidal shaped bone block are disclosed. A groove is formed initially in the bone using drill bits. Dilators are used to increase the size of the drilled groove. The orthogonal corner at the bottom of the groove is shaped using a rasp. A smooth dilator compacts the bone in the acute angle at the bottom of the groove opposite the orthogonal corner to create the final trapezoid shape of the bone groove. A meniscal allograft having a bone block of corresponding trapezoidal shape is prepared using a workstation and three cutting jigs to make three corresponding cuts. The trapezoidal bone block of the meniscal allograft is then installed within the bone groove.

The invention relates to the technical field of medical machinery, in particular to a first tread wedge joint plate. The first tread wedge joint plate comprises a plurality of fixing holes which are used for fixing the first tread wedge joint plate on a first metatarsal bone and an internal side wedge bone; a sliding hole which enables pressing between bones to be convenient during fusion of the first tread wedge joint is formed in the first tread wedge joint plate. According to the first tread wedge joint plate, tender moving of the first tread wedge joint surface is allowed when the bridge first tread wedge joint plate is fixed, namely, the first tread wedge joint surface gristle is kept and the joint is limited from moving; when the first tread wedge joint fuses the first tread wedge joint plate to be fixed, bone grafting after joint surface gristle is removed, pressing of the first tread wedge joint surface is achieved through a sliding hole at a far end of the first tread wedge joint plate, and accordingly the fusion rate is improved; the first tread wedge joint plate is in an anatomy type design, anatomical reduction is convenient, pre-bending of the first tread wedge joint plate during operation is not required, and the intensity of the first tread wedge joint plate is avoided from being influenced by bending during the operation.

The invention relates to the fields of digital medicine and computer-assisted surgery, and provides a virtual surgery simulation method and a device of the virtual surgery simulation method. The virtual surgery simulation method comprises the following steps of: (1) carrying out CT plain scanning on a craniomaxillofacial region to obtain scanned data; (2) carrying out three-dimensional reconstruction on bone tissue according to the scanned data by utilizing a computer, and simulating the operation of osteotomy to establish a dendritical structure model of a craniomaxillofacial bone; (3) carrying out bone block three-dimensional space observation at any angle of view on a virtual reality interactive operation platform by an operator who wears a pair of spectral separation stereo glasses to assist the operator in preoperative design; and (4) carrying out bone block three-dimensional space rotating and shifting simulation on the dendritical structure model of the craniomaxillofacial bone in a virtual reality space by the operator who wears a pair of data gloves, and producing real-time force feedback perception by a haptic feedback device which is connected with the computer to assist the operator in surgery simulation. The method and the device are strong in immersion and interaction, simple, efficient and easy to operate.

The present technology is related to the field of bone-tendon-bone implants, grafts, and components thereof, for implantation in mammals, particularly for implantation in humans. More particularly, the present technology relates to assembled implants that comprise a length of tendon and at least two bone components or intermediate bone blocks that are assembled to form a bone-tendon-bone implant, and methods of making such implants. In some embodiments, implants of the present technology provide a first grip on the tendon prior to implantation and a second grip during or after implantation. In some embodiments, bone block assemblies or intermediate bone blocks of the present technology have a first geometric configuration prior to implantation and a second geometric configuration during or after implantation.