206 results about "Bony Tissues" patented technology

A bone implant (10) is implanted in a cavity parallel to an implant axis (I) and without substantial rotation. The implant includes, on an implant portion to be implanted, cutting edges (14), which do not extend in a common plane with the implant axis and are facing toward the distal end of the implant. The implant also includes surface ranges (16) of a material that is liquefiable by mechanical oscillations. The cutting edges (14) are dimensioned such that they are lodged in the cavity wall after implantation. For implantation, the implant is impinged with mechanical oscillations, resulting in the thermoplastic material being at least partially liquefied and pressed into unevennesses and pores of the cavity wall to form a form-fit and/or material-fit connection between implant (10) and cavity wall, when re-solidified. The cutting edges (14) anchor the implant in the cavity wall.

Disclosed are implantable devices that are configured for implantation through tissue or membrane and into an implantation site comprising viscoelastic fluid or non-osseous tissue. In embodiments of the invention, the implantable devices comprise: (a) a nonlinear body member having a direction of extension, a longitudinal axis along the direction of extension, and a proximal portion and a distal portion, wherein at least a portion of the body member deviates from the direction of extension, (b) a retention element at the proximal portion of the body member, the retention element configured to retain the implantable device at the implantation site, the retention element presenting an external profile of no greater than 0.5 mm when the device is implanted in a patient; and (c) a bioactive agent delivery system at the distal portion of the body member, the bioactive agent delivery system comprising one or more bioactive agents. Also disclosed are methods of delivering a bioactive agent to a patient using the devices.

A new conceptual biomedical method is presented for designing scaffold-based bone implants and using these implants in treating deteriorated bones. These implants have micro-architectural bone structures that are capable of mimicking the stochastic micro-structure as in natural bone bio-mineral structures. Moreover, they can be adapted as specific tailor-made compatible bone-repair mediator implants to be used as effective substitutes for natural damaged bone fracture structures.

An apparatus for reducing the profile of a bone fixation plate while preventing backing out of screws is disclosed. The plate has at least two openings though which two screws can pass through bony tissue. The apparatus includes at least one section of relief and sections of engagement. As the screw is tightened, it will begin to lag the plate to the bone. When the screw head interferes with the plate at the interference point, there is a slight resistance that insertion forces can overcome. When the screw is advanced further, it snaps into the sliding fit area and is allowed to move freely. The forces that cause the screw to back out from the plate are preferably not strong enough to pass the screw head back past the interference section. At least one of the two openings is configured as an elongated slot to allow the screw to translate in the slot. It may be desirable to include a set screw to help prevent backout.

A device, is provided for implanting in bony tissue a bone fastener rotatably connected to a collar. The sleeve is configured for threaded connection to the collar and has a central bore aligned with the longitudinal axis of the sleeve for receiving an inner shaft. The inner shaft inserts in the sleeve and has a distal end configured for connection to a portion of the bone fastener, such as an internal hex feature. In some embodiments a movable member may be inserted in an opening transverse the central bore and positionable to either rotatably or fixedly connect the inner shaft to the sleeve. In other embodiments, a collet nut threads onto a collet thread to radially compress sleeve tangs to frictionally engage inner shaft to sleeve.

This invention relates to methods for medical treatment of a variety of pathological conditions associated with bone environments and musculoskeletal environments, including the treatment of ischemic conditions such as bursitis. The method involves applying a sufficient number of acoustic shock waves to the site of a pathological condition including micro-disruptions, non-osseous tissue stimulation, increased vascularization, and circulation and induction of growth factors to induce or accelerate the body's natural healing processes and responses.

The invention relates to a bone screw with a shaft that defines a longitudinal axis and with a head that is configured as a thickened portion, said shaft and head being threaded. The thread of the shaft (bone thread) merges in an uninterrupted manner into the thread on the flared area of the head adjoining the shaft. As a result, part of the threaded head lies in the osseous tissue, giving a larger contact surface between bone screw and bone and improving the distribution and transmission of the loads and forces.

The present invention provides an implant consisting of a biodegradable magnesium-based alloy or partially applied with the magnesium-based alloy, and a method for manufacturing the same. The implant according to the present invention is biodegradable, in which its biodegradation rate can be easily controlled, and the implant has excellent strength and interfacial strength to an osseous tissue.

The present invention relates to apparatus ad methods for correcting nasal valve collapse comprising a device configured for suspending a nasal valve, the device comprising a body portion comprising a proximal end, a distal end, and a plurality of barbs, wherein the body portion is configured to be inserted through or underneath the upper lateral cartilage of a patient and wherein the plurality of barbs are configured to engage a soft tissue overlying a bony tissue proximal to the upper lateral cartilage, and a head portion coupled to the proximal end of the body portion wherein the head portion is configured to engage the upper lateral cartilage of the patient when the plurality of barbs are engaged with the soft tissue overlying the bony tissue proximal to the upper lateral cartilage

Described herein is a simplified placement system and method for a tissue graft anchor by which a surgeon may introduce one or more sutures into a hole in a boney tissue, apply tension to the sutures to advance a soft tissue graft to a desired location, and then advance the anchor into the bone while maintaining suture tension and without introducing spin to the suture.

The invention provides a high-strength collagen base artificial bone repair material which can be used for repairing the bone defect of bearing parts of a human body. The high-strength collagen base artificial bone repair material has chemical composition and structure formed by self-assembly of nanometer calcium phosphate and collagen molecules, so that the high-strength collagen base artificial bone repair material has a biomimetic mineralization structure similar to the natural bone tissue of the human body. In terms of mechanical properties, the material has the mechanical strength similar to that of the cortical bone of the human body and can be used for repairing the bone defect of the bearing parts of the human body. The invention also provides a preparation method of the high-strength collagen base artificial bone repair material.

A device and system for stabilizing movement between two or more vertebral bodies and methods for implanting. Specifically, embodiments of the present disclosure may provide medical professionals the ability to selectively position and orient anchors in bony tissue and then attach a plate to the pre-positioned anchors. The plate assembly, once positioned on the anchors, prevents the anchors from backing out of the bony tissue.

Described is a new bone healing method and class of bone fixation implants that change shape once implanted so as to minimize non-healing and speed the bone healing process. The bone fixation method involves shape changing implants that continuously hold the bones in apposition so that a gap does not form. Gaps in time allow non-bony tissue to infiltrate and stop healing. Furthermore, the implants actively compress bone to increase bone mass and strength. Bone cell pressure due to compression and electrical current flow due to bone deformation act to stimulate healing. The new implant designs also provide a scaffolding to conduct bone through the implant and across the healing bone interface. The methods and designs are applicable to but not limited to use for bone screws, plates, staples, rods, cylinders and external fixation devices.

Improved coring devices suitable for articular cartilage and bone, wherein the cutting device is capable of slicing through a tough protective tangential zone, delicately separating the shock absorbing columns of cells in the radial zone of the cartilage, and finally cutting into the hard underlying bone in a manner that preserves the viability of osteochondral cells. The coring device features an annulus having a flat annular cutting edge interrupted by at least one serration having neutral cutting angles. A method for concurrently removing cartilaginous and bony tissue using an improved coring device that preserves the viability of osteochondral cells.

Implantable orthopedic prosthetic devices containing tissue repair compositions that contain demineralized bone fragments and homogenized connective tissue.

The invention relates to a biodegradable unsaturated polyphosphate ester containing phosphate ester and fumarate ester bonds and discloses a preparation method of the polyphosphate ester and a method for the application of the polyphosphate ester as a medical sustained release preparation for injecting into a treated part and as a hard tissue repair and filling material. The mixture composed of the polyphosphate ester, a cross-linking vinyl monomer, a free radical thermal initiator or photo initiator being capable of initiating or assist in initiating covalent cross-linking reaction and biologically active drugs has excellent medical sustained release effect and no toxic side effects. As a material for repairing the defects of osseous tissue, the biodegradable unsaturated polyphosphate ester can stimulate the formation of new bones; and the material can also be degraded gradually and finally be substituted by a new bone completely. The biodegradable unsaturated polyphosphate ester has outstanding biocompatibility and no obvious inflammation reactions and teratogenesis.

The invention discloses a preparation method of a novel bionic supporting material in bone tissue engineering, belonging to the field of the bone tissue engineering. The preparation method comprises the following steps of: using a natural plant tissue as a template and preparing a bioceramic or bioactive glass porous bracket material with a bionic structure through processes of carbonization, vacuum/pressure impregnation of an inorganic sol, template removal by oxidation in the air, high temperature sintering and the like. The porous bracket material prepared by the invention has favorable physicochemical and biological properties, particularly has a plant tissue porous structure obviously characterized by tubular holes, wherein the structure is extremely similar to a cancellous bone and has a porosity of 70-95% and aperture range of 10-28 mu m. The unique porous structure of the porous bracket material can quicken the substance exchange speed outside and inside the bracket, is in favor of controlling the degradation speed of the bracket material and promoting the growth of new bones. The preparation method of the bionic bracket material of the bone tissue engineering has wide application potential in the generation and repair fields of hard tissues of the orthopaedics, the dentistry, the maxillofacial surgery and the like.