140 results about "Palatal structure" patented technology

An interspinous spacer assembly (100) for insertion and / or implantation between spinous processes of adjacent superior and inferior vertebrae includes an interspinous spacer member (110) sized and configured for insertion into the interspinous space located between adjacent spinous processes and an engagement mechanism (105) for operatively coupling the spacer member to the adjacent spinous processes and for preventing migration of the assembly once implanted. The interspinous spacer assembly is adjustable to conform to the individual anatomy of a patient's spine.

An improved vascular clamp structure is comprised of a clip body and two clipping pieces, all of which constitute a vascular clamp used cooperatively for medical clamping pliers. The clip body is arranged with a bridge part, and from two ends of which a clipping part extends respectively and making one side of the clip body forming an opening; the clipping piece is arranged with a clipping body with a fitting slot. The fitting slot and the clipping part can be assembled together. Both adjacent faces of the clipping bodies are respectively arranged with a groove and at least one male or female fastener inter-buckled together. Wherein, the clip body is set as a memory metal. By arranging clipping pieces, the vascular clamp of the present invention enhances the frictional areas of inter-contact. Arranging male and female fasteners at the adjacent faces of clipping pieces also enhances the clipping force, and effectively improves the slipping drawback of traditional vascular clamp. In addition, the vascular clamp is made of memory metal; by the separation of male and female fasteners, the vascular clamp further possesses the function of dismantlement.

The invention provides a method of providing a metallic orthopaedic implant with a micron or nanometer-scale surface roughness to facilitate acceptance of tissue and bone growth or apposition after implantation while maintaining the structural integrity of the orthopaedic implant. The invention also provides a metallic orthopaedic implant comprising a metallic body and metallic elements adhered to a portion of the surface of the metallic body to define a three-dimensional porous surface geometry, wherein at least some of the metallic elements have a micron or nanometer-scale surface roughness.

A helmet construction for protecting a user's head, and the brain within the cranium from impact forces, includes a shell contoured to the shape of the user's head, with cushioning along at least part of the shell interior and a chinstrap. The shell consists of three (or more) discrete panels that are physically and firmly coupled together providing rigid protection under most circumstances, but upon impact the panels move relative to one another, but not relative to the user's head, thereby permitting impact forces to be dissipated and / or redirected away from the cranium and brain within. Upon impact to the helmet, there are sequential stages of movement of the panels relative to each other, these movements initially being recoverable, but with sufficient vector forces the helmet undergoes structural changes in a pre-determined fashion, so that the recoverable and permanent movements cumulatively provide a protective ‘crumple zone’ or ‘shear zone’. The first two stages of protection arise from the design of the fasteners that have the ability to invaginate and collapse within themselves, and their design having a 45 degree angle, which will allow movement of a region of connected panels to translate along the fastener shaft. Both of these movements will be recoverable and provide a ‘functional crumple zone’. The final stage of protection arises from the braking function of the pins, as they are forced from one aperture through to the next, the direction and extent of which is determined by the impact force and direction. This final level of panel movement and protection is not recoverable and thus provides a ‘structural crumple zone’. Finally the fastener size and thickness, together with the thickness of webbing and distance between apertures, functions to provide varying degrees of resistance to impact forces, thus making the helmet design suitable for activities with different levels of impact speed and risk potential.

An implant designed e.g. as a replacement for an articulating surface of a human or animal joint is secured to the bone tissue with the aid of a plurality of fasteners (3). The implant (2) comprises a bone side to be brought into contact with the bone tissue, which bone side is equipped with a plurality of fastening structures restricted to this bone side. The fasteners (3) comprise a distal and a proximal side, wherein the distal side is equipped for being anchored in bone tissue and the proximal side is equipped for being connected with one of the fastening structures of the implant (2). The distal sides of the fasteners (3) are anchored in the bone tissue of the appropriately prepared bone and the implant (2) is then attached to the anchored fasteners (3) by connecting the fastening structures with the proximal sides of the fasteners (3), wherein the implant (2) is pressed against the proximal sides of the anchored fasteners (3).

A low rigidity region being more stretchable and bendable than a high rigidity region, includes a main portion, and a medial first flexible portion and a lateral first flexible portion extending from the main portion in the medial and lateral directions. The main portion covers a portion of the area from the shaft of the first proximal phalanx to the shaft of the second proximal phalanx, the medial first flexible portion covers a portion of the area from the shaft of the first proximal phalanx to the head of the first metatarsal bone, and the lateral first flexible portion extends to the lateral side of the foot from the main portion. When pushing off the foot onto the medial / lateral side in a diagonally forward direction, the upper bends along the diagonal bend lines. Therefore, the diagonal portions and the main portion serve as the bend lines.

A support structure implant for location within a bone cavity to support the bone which defines the cavity is formed from interlaced wires which extend from a first end of the structure towards an opposite second end. The wires are formed into loops at the first end of the structure. The structure includes a clip having a plurality of fingers which extend through the loops to control the spacing between the loops.

Methods and apparatus for orthopedic replacement of the hip and hip fracture fixation devices include structures and techniques for fixing or enhancing interconnection of implant components, such as by increasing the interconnection in an interference fit with one or more tapers, threads, and / or cooling of components prior to assembly. For example, a prosthetic femoral neck implant can include a thread and a Morse taper for lockable attachment to a prosthetic femoral head and / or intramedullary stem.

A tibial support structure includes a platform portion and a medullary portion that are monolithically formed as a single piece. The medullary and platform portions of the augment component are adapted to accommodate and mechanically attach to a tibial baseplate, and are individually shaped and sized to replace damaged bone stock both within the tibia, as well at the tibial proximal surface. The monolithic formation of the tibial support structure provides a strong and stable foundation for a tibial baseplate and facilitates restoration of the anatomic joint line, even where substantial resections of the proximal tibia have been made. The tibial support structure may be made of a bone-ingrowth material which facilitates preservation and rebuilding of the proximal tibia after implantation, while also preserving the restored joint line by allowing revision surgeries to be performed without removal of the tibial support structure.

A support structure implant for location within a bone cavity to support the bone which defines the cavity is formed from wires by braiding in a machine direction from a first end of the structure towards an opposite second end. The wires are formed into loops at the first end of the structure so that two lengths of wire extend away from each loop and a reformed into the braid. Each of the wires which is formed into the braid is held at the second end of the structure in a clamp. The clamp is provided by a support ring and a clamp ring which is formed from a shape memory alloy which can shrink to clamp the wires against the support ring when heated.

Disclosed are an apparatus for an interspinous fixation and / or distraction of vertebrae and a methodology for minimally invasive implantation of the apparatus in the spine of a patient. The apparatus corresponds to a pair of teardrop shaped lateral wing elements spaced apart by a central core element that may be selectively sized during the implantation process. The wings and central core are held together by a single threaded bolt and locking nut configuration resulting in a simple structure that may be easily implanted with minimal patient discomfort.

An expandable implant includes a structural insert to provide a robust connection between an insertion instrument and the expandable implant. The structural insert can be made from a different material than the remainder of the implant to withstand compressive, tensile, shear, and torsional loads which may be present while inserting the implant into a patient. The structural insert may be formed as part of a bottom member of the implant or may be a separate element inserted into the implant body. The structural insert may provide a threaded connection to an insertion instrument. The expandable implant may include a bone graft port in fluid communication with a bone graft opening extending through the implant body.

The invention relates to a combination type ankle joint three-dimensional traction fixing frame. The fixing frame mainly comprises a horseshoe-shaped ring and four carbon fiber connecting rods. Three Kirschner pins are locked through pin locking screws, pass through heel bones, shin bones and metatarsal bones three-dimensionally and are fixed on the horseshoe-shaped ring and the four carbon fiberconnecting rods; and one or more ejector pins are locked through the pin locking screws to fix an inner ankle, an outer ankle and a rear ankle of an ankle bone. The fixing frame has a compact and stable structure, is convenient to use and detach and has low using cost, ankle joints and fracture blocks are firmly fixed, periosteum is not required to be stripped by a surgery, and the healing of damaged ankle joints is facilitated.

A reduced shock breakaway set screw for use with medical implants and constructs for the spine having improved geometry of the groove area between the upper head portion and lower threaded portion of the set screw. The groove area of the set screw has circular and noncircular portions which in at least one embodiment comprise upper and lower radii separated by a flattened groove bottom. Other embodiments have apertures running between the groove area and an internal cylindrical bore and / or ridges or ribs running across the groove area. The improved geometry serves to slow down the fracturing process during shearing thereby increasing the proportion of energy dissipated as heat from plastic deformation of the material to the amount of energy released as kinetic energy from elastic deformation, thus reducing shock to the patient and physician without changing the preset break-off torque for the set screw.

The invention is a structural connector used as a component to construct an arch consisting of a plurality of closely adjacent, polygonal rows of stringer beams. The multiple row polygonal arch is a low-cost, general purpose support structure for bridges, shelters and arbors applicable to many cost-, time- or environmentally-sensitive situations. The invention is a Y-shaped connector, typically made of sheet metal, with three brackets, two upper brackets and a lower bracket, which collectively enable a union of three beams forming one node of the multiple row polygonal arch. Using these Y-shaped connectors to join the beams at each node creates the arch structure, and additionally provides the features of cantilevering, modularity, generic component shape, reusability and safety. The invention is applicable to a variety of structures such as: pedestrian and vehicular bridges, shelters, arbors, as well as jewelry, furniture and toys.

A structure of a correction shoe pad includes a shock-absorber mounted at an outside portion of a pad body of a shoe pad, so that the shock-absorber mounted at the outside portion of the pad body provides support to effectively prevent situations, such as eversion and ankle sprain causing by shift of the center of the body weight of the user toward the outer side of the sole and also to provide effects of bandy leg and wear of meniscus of knee joints resulting from the shift of the center of the body weight of the user toward the outer side of the sole.

The invention discloses a surgical instrument for treating cervical spine fracture dislocation. The surgical instrument comprises a distracting structure, a prying structure, a head traction mechanism, a lanciform bone rongeur, a curet, a fixing structure and a somatosensory evoked potential monitor. The distracting structure comprises an automatic distracter for opening adjacent vertebral bodies of anterior cervical spine and distracting pins fixed to the adjacent vertebral bodies. Through the synergistic effect of the distracting structure, the prying structure, the fixing structure and the somatosensory evoked potential monitor, an effect of quick restoration and pressure reduction is achieved; patients are effectively monitored in the traction, distraction and operation process, and medical accidents are prevented.

The invention relates to an abutment for connecting a dental prosthesis to a dental implant, the abutment comprising a body portion for supporting the dental prosthesis and a contact surface apical to said body portion for contacting the dental implant.In order to allow an adjustment of the tooth restoration structure to properties of a natural tooth the abutment is composed of a resin that is reinforced with fibers substantially extending over the total length of said body portion towards said contact surface.

An apparatus and method for determining contours of a patient's foot. The apparatus includes an alignment section that orientates the foot relative to an optical imaging section. The alignment section includes at least one support member located proximate a focal length of the imaging section, that engages the plantar surface substantially only in the immediate area of the fifth metatarsal head of the foot. The support generates a dorsally-directed load that locks the midtarsal joint. The alignment section further includes a heel stirrup and a laser beam or other reference line for aligning the second metatarsal head with the distal one-third of the lower leg, to place the subtalar joint in a neutral condition. The foot is thus suspended in space such that the imaging section is able to obtain an accurate measurement of the plantar surface without distortion of the soft tissues or bone structure of the foot.

The invention relates to a U-shaped beam three-dimensional movable positioning bed suitable for radiotherapy and belongs to the manufacturing technical field of novel medical auxiliary equipment. The U-shaped beam three-dimensional movable positioning bed comprises the following 20 components: a base, a horizontal rotating servo motor, a U-shaped beam, a longitudinal swinging servo motor, a worm A, a worm gear A, a longitudinal swinging shaft, a longitudinal main beam, a transverse swinging shaft, a cross beam, a frame, a transverse swinging servo motor, a worm B, a worm gear B, a three-section type bed board, a rocker arm support, an electric lifting screw, a bed board hinge, constraint fixing belt, an intelligent controller and the like. During usage, the working power supply of the intelligent controller is switched on, and an operation track control program is preset according to the irradiation treatment requirements of a specific patient. After that, an operation switch is turned on. The program of the U-shaped beam three-dimensional movable positioning bed can be preset to realize the scanning motions of different tracks or realize the positioning operation on different irradiation parts. The U-shaped beam three-dimensional movable positioning bed has the advantages of being reasonable in design, compact in structure, convenient to use and the like.

A support structure implant for location within a bone cavity to support the bone which defines the cavity is formed from interlaced wires which extend from a first end of the structure towards an opposite second end. The wires are formed into loops at the first end of the structure. The structure includes a clip having a plurality of fingers which extend through the loops to control the spacing between the loops.

The invention discloses a humerus greater tuberosity locking plate. The humerus greater tuberosity locking plate comprises a plate body. The plate body comprises a fixed head portion, a fixed middle portion and a fixed tail portion which are sequentially connected. Two clamping jaws are symmetrically arranged on the fixed head portion, a protrusion is arranged on the fixed middle portion, a plurality of locking screw holes and a plurality of kirschner wire temporary fixing holes are formed in the fixed middle portion, and a far-end adjusting hole and a far-end kirschner wire temporary fixing hole are formed in the fixed tail portion. The humerus greater tuberosity locking plate is reasonable in structural design, the tension band principle is applied, the patella fixing structure and the patellar tendon principle are used for reference, the clamping jaws and the protrusion are arranged ingeniously, the positions are arranged scientifically, the locking plate can be better anchored with and attached to a greater tuberosity fragment, the requirements that rotator cuff muscle activities are affected to the minimum and the fragment is firmly fixed to the maximum are met, the fixing stability is good, the safety and the effectiveness of operations are greatly improved, operation is convenient and flexible, trauma is small, and unnecessary pain is prevented from being brought to patients. In addition, the humerus greater tuberosity locking plate is simple in overall structure, low in cost, easy to realize and convenient to apply and popularize widely.

A locally reinforce porous ear scaffold and its manufacture method are disclosed. That ear scaffold has good structural rigidity, is not easy to deform and is beneficial to patient tissue growth and scaffold fixation. The ear scaffold comprises an ear scaffold body and a reinforcing net structure. A plurality of small holes are uniformly arranged along the outer contour of the ear bracket body; The inner contour of the ear bracket body is provided with a reinforcing mesh structure adapted to the inner contour shape; The ear bracket body is made of silica gel material.

A fiber abutment material and structure of dental implant includes: a fiber resin abutment equipped with plural fiber center shafts, such as glass fiber center shaft, carbon fiber center shaft, quartz optical fiber center shaft, or glass fiber optics center shaft, in which the single, dual-layer or multi-layer fiber multiply enhances the intensity, and the fiber resin abutment with grind ability is easily modified on-site for the dentist, is equipped with considerable fibers with tensile strength higher than that of titanium or zirconia (ceramic), because of the fiber structure elasticity similar to natural tooth to be shock absorbed, to prevent the bone from hurting and decrease the damage to the base.

Methods and apparatus for orthopedic replacement of the hip and hip fracture fixation devices include structures and techniques for fixing or enhancing interconnection of implant components, such as by increasing the interconnection in an interference fit with one or more tapers, threads, and / or cooling of components prior to assembly. For example, a prosthetic femoral neck implant can include a thread and a Morse taper for lockable attachment to a prosthetic femoral head and / or intramedullary stem.

The invention discloses a fracture orthotic device for bone surgery. The device comprises two hoops, an opening of each hoop is provided with an adjusting bolt, a plurality of supporting plates are arranged between the two hoops, the supporting plates are uniformly arranged in a circle to form a shape of an annular array, the inner side of the annular array is provided with a fixing cover, the fixing cover is composed of a plurality of pressing blocks, transversal elastic ropes and longitudinal elastic ropes, the pressing blocks are arranged in a circle to form a columnar structure, the pressing blocks in each same row / line are connected through a transversal / longitudinal elastic rope, each supporting plate is provided with a screw hole, and each screw hole is internally in threaded connection with a pressing push rod used for withstanding a corresponding pressing block. The fracture orthotic device for bone surgery has the advantages that the design of the structure is reasonable, thedevice can take the place of plaster to fix a fracture site of a leg bone of a patient, so that on one hand, interspace is reserved between the fixing cover and the fracture site, and the breathability is better; on the other hand, pressures on each pressing block can be adjusted through the corresponding pressing push rod, the device is suitable to various leg types, the device can fit the fracture site better and be fixed better, and the orthotic function is achieved.

The invention belongs to the field of medical equipment, and particularly relates to a finger joint prosthesis structure. The a finger joint prosthesis structure comprises a proximal prosthesis, a joint assembly, a distal prosthesis and a rotating shaft; the proximal prosthesis comprises a proximal prosthetic joint part and a proximal prosthesis handle part, the joint assembly comprises a joint assembly head part and a joint assembly tail part, and the distal prosthesis comprises a distal prosthetic head part and a distal prosthesis handle part; the proximal prosthetic joint part and the jointassembly head part are in shaft-fit connection through the rotating shaft, the joint assembly tail part is connected with the distal prosthetic head part, the proximal prosthesis handle part is threadedly connected with a proximal setscrew, and the distal prosthesis handle part is threadedly connected with a distal setscrew. The finger joint prosthesis structure has the advantages that a semi-closed structure and a ball-fitting structure are used in joint parts, thereby maximally preventing a muscle tendon from being caught in the rotating shaft to result in a movement disorder when the finger moves, a universal rotation is more accord with the real motion range of small joints of human bodies, the risk of muscle tendon fracture is reduced, the postoperative complications are reduced, andnormal joint functions are better achieved.

The invention relates to a reinforcement treatment structure for a joint of a squat queen post and a beam of a historic building. A base of the squat queen post is clamped on the beam by virtue of a wood component, a double tenon is arranged on the base of the squat queen post, a double tenon mortise matched with the double tenon is formed in the beam, and reinforcement is carried out without adopting an iron clasp nail, flat steel or angle steel on the basis that the original material and construction technology are not changed, and only a wood structure is adopted for carrying out reinforcement treatment on the joint of the squat queen post and the beam of the historic building.