160 results about "Bones parts" patented technology

A bendable bone plate (10) is disclosed which is adapted for use in situ as a conformable bone splint to fix the spatial relationship of at least two bone parts (80). The bone plate (10) has an elongated plate (11) made of a bendable material. A plurality of screw apertures (24) extending through the top (14) and bottom (16) surfaces are disposed along the length (L) of the plate. Bone screws (28) are inserted through the apertures into the underlying bone parts (80) to anchor the elongated plate (11) to the bone parts (80). At least two of the screw apertures (24) are disposed as a closely spaced pair (40) of screw apertures (24) with a “bend relief zone” (60) disposed between the closely spaced apart screw apertures (24). The bend relief zone (60) is disposed to allow the elongated plate (11) to be bent across the bend relief zone (60) up to a certain angle (A) without deforming the screw apertures (24) adjacent the bend relief zone (60)

A surgical fixing device for the fixing of adjacent bone parts is provided. A first engaging element is provided for engaging the underside of the two bone parts and a second engaging element is provided for engaging the upper side of the bone parts. A tensioning device connects the two engaging elements to each other through an interspace between the bone parts and permanently fixes the two engaging elements with respect to each other in a tensioned manner when they engage the underside and the upper side of the bone parts. To make it easier to apply the fixing device, at least one elastic tensioning element is provided which displaces a supporting surface applied to the upper side of the bone parts toward the first engaging element, so that the supporting surface and the first engaging element can be moved away from each other against the force of the elastic tensioning element.

Bone length adjustment method and system includes a two-part telescopic device connected to bone parts whose length between the connection points is to be adjusted, with each part of the telescopic device being secured to the bone part, and a rod with an embedded permanent magnet which is in threaded engagement at one or both of its ends with one or both of the parts of the telescopic device. The permanent magnet in the rod is excited by an external solenoid arrangement to cause a radial force to develop at the rod thereby causing it to rotate. Rotation of the rod is converted via the threads at one or both of its ends to axial motion or movement of the telescopic parts relative to each other and thereby causes an increase or decrease in the bone length depending on the direction of axial movement between the telescopic parts.

An implant for fixing two bone parts to be connected to each other is provided. The implant includes a first plate-shaped engaging element for engaging inner surfaces of the bone parts, at least two tensioning elements fixed on the engaging element and projecting transversely from it, and a second plate-shaped engaging element for engaging outer surfaces of the bone parts. The second engaging element can be tensioned with respect to the first engaging element by means of the tensioning elements brought through the interspace between the bone parts. To improve the ease of handling of the implant during tensioning, it is proposed that the tensioning elements are connected to each other at their end opposite from the first engaging element by a bridge.

The present invention relates to a fastening element for an implant system, which comprises at least two fastening elements fixable to bone parts or the like and at least one connecting element fixable to the at least two fastening elements, wherein the fastening element comprises a fastening part with a fastening portion at the distal end as well as a receiving part connected to the fastening part, wherein the receiving part comprises a connecting-element receiver for receiving the connecting element as well as a fixing element for fixing the fastening element in the connecting-element receiver, wherein the connecting-element receiver is designed asymmetrically in relation to an axis of symmetry or longitudinal axis of the fixing element.

Repairs of cartilage defects or of cartilage/bone defects in human or animal joints with the help of devices including a bone part (1), a cartilage layer (2) and a subchondral bone plate (4) or an imitation of such a plate in the transition region between the cartilage layer (2) and the bone part (1). After implantation, the bone part (4) is resorbed and is replaced by reparative tissue only after being essentially totally resorbed. In a critical phase of the healing process, a mechanically inferior cyst is located in the place of the implanted bone part (1). In order to prevent the cartilage layer (2) from sinking into the cyst space during this critical phase of the healing process the device has a top part (11) and a bottom part (12), wherein the top part (11) consists essentially of the cartilage layer (2) and the subchondral bone plate (4) and the bottom part (12) corresponds essentially to the bone part (1) and wherein the top part (11) parallel to the subchondral bone plate (4) has a larger diameter than the bottom part (12). After implantation in a suitable opening or bore (20), the cartilage layer (2) and the subchondral bone plate (4) are supported not only on the bone part (1) but also on native bone tissue having a loading capacity not changing during the healing process. Therefore, the implanted cartilage layer cannot sink during the healing process.

A bone fastener assembly, comprising a bone fastener, an adjusting member and a securing fastener is provided for fastening an appliance to a bone body so that a plurality of the bone fastener assemblies and the appliance constitute an apparatus that acts to retain a plurality of bone bodies in a desired spatial relationship. Each bone fastener has an attaching portion for attaching the bone fastener to a bone or bone part, a supporting portion for supporting the adjusting member for universal movement relative to the supporting portion, and a securing portion for securing the bone fastener to the securing fastener. The securing fastener has a first end that passes through an aperture in the appliance and an opening in the adjusting member and is secured to the securing portion of the bone fastener. A second end of the securing fastener has a bearing surface that adjustably bears against the appliance in opposition to an engaging surface of the adjusting member that engages the appliance.

A bone plate is described which is adapted for use in situ to fix a spatial relationship of at least two bone parts. The bone plate has at least one pair of the bone screw apertures that are adjoined by a relief-space contiguous with the open space of the screw apertures themselves. An adjoined aperture pair forms a complex aperture and has a center-to-center distance d of the apertures along an axis running through the centers of the apertures. The center-to-center distance d is equal to or greater than the sum of the radii (r1+r2) of the heads of the individual bone screw used with the aperture pair.

The invention discloses a tissue engineering bone/cartilage double-layer scaffold and a construction method and application in medical science. The method adopts natural cartilage and bone as materials, respectively removes the antigenicity of the cartilage and the bone through de-cell, and adopts a freezing and drying method to prepare the double-layer scaffold simultaneously suitable for growthof the two issues of the bone and the cartilage. A preparation method comprises that: acellular bone is soaked in suspension of cartilage acellular matrix microfilaments, and the double-layer scaffoldof which the upper layer is a cartilage acellular matrix three-dimensional porous spongy scaffold and the lower layer is an acellular bone scaffold is prepared by the freezing and drying method and acrosslinking method. The cartilage acellular matrix spongy scaffold part of the double-layer scaffold can be introduced with factors promoting the formation of the cartilage, and the acellular bone part can be introduced with factors promoting the formation of the bone, and the factors can be respectively inoculated with cells for forming the cartilage or the bone to construct a living tissue engineering bone/cartilage complex, which is used for repairing bone and cartilage complex defect or total joint defect clinically.

An ultrasonic transmission/reception apparatus which can image both a minute tissue around a bone part in an object and a minute tissue inside the bone, at a high resolution. The apparatus includes a system control unit which controls the synthesizers so that a first ultrasonic wave may be transmitted from one of the transmission elements while its frequency is being swept, and that a second ultrasonic wave may be transmitted from the other transmission element while its frequency is being swept with a predetermined difference frequency held relative to the frequency of the first ultrasonic wave, a signal processing unit which subjects the detection signal of the ultrasonic echo to predetermined signal processing, a signal processing unit which subjects the detection signal of the vibro-acoustic sound to predetermined signal processing, and a display-image arithmetic unit which generates B-mode image data based on the detection signals subjected to the signal processing.

In a device, assembly and method for separating meat from bone parts, at least a chamber (2) is provided for receiving bone parts which are connected to meat, having a first open end (4) and a second open end (5) which is located opposite the first open end (4), a plunger (7), first displacement means for displacing the plunger (7) inside the chamber (2) from the first open end (4) thereof, and a stop element (13) at the second open end (5) for creating a closed space (3) together with the chamber (2) and the plunger (7). A pressure is applied to the bone parts by displacing the plunger (7) in the chamber (2). The stop element (13) is arranged at a distance from the chamber (2), so that at least one gap (15) is formed between the chamber (2) and the stop element (13), for the passage of meat which has been separated from the bone parts under the influence of pressure.

In order to improve a bone screw with a shaft defining a longitudinal axis and with a head which can be brought into engagement with a bone screw receiving means of a bone plate for the releasable connection of the bone screw to the bone plate, wherein a securing element for securing a connection between the bone screw and the bone plate is provided, wherein the bone screw can be brought from a position of engagement, in which the bone screw is held on the bone plate, into a release position, in which the bone screw can be released from the bone plate, wherein the securing element can be brought from a non-securing position, in which the bone screw can be brought into the release position, into a securing position for securing the connection between the bone screw and the bone plate, in which the bone screw takes up the position of engagement, such that a bone plate can be fixed to bone parts more easily and more securely it is suggested that the securing element be supported on the bone screw so as to be movable.

The invention discloses a joint type internal skeleton pneumatic soft hand claw. The joint type internal skeleton pneumatic soft hand claw comprises a central palm part, a plurality of soft-body tentacles fixed to the periphery of the central palm part; each soft-body tentacle part comprises a plurality of joint parts which are connected in sequence; each joint part comprises an elastic telescopiclayer and a plurality of supporting bone parts which are uniformly distributed in the elastic telescopic layer; an inner cavity of the elastic telescopic layer is supported by the supporting bone parts, the inner cavity is connected with the elastic telescopic layer, the supporting skeleton parts are hinged; an air hole is formed in the middle of the supporting skeleton part; the front end of thejoint part is provided with a fingertip bone part which is hinged to the support bone part; a finger bone part is arranged at the rear end of the joint part and is hinged to the supporting bone part;a connecting bone part is arranged between every two adjacent joint parts and is hinged to the supporting bone part; the air holes are formed in the connecting bone part and the finger bone part; andthe connecting bone part and the finger bone part are independently connected with an air pipe; the inner part of the elastic telescopic layer is filled with a plurality of circles of fiber restraintlayers, and the constraint layers correspond to the outside of the gas chamber. According to the joint type internal skeleton pneumatic soft hand claw, the rigidity and the grasping capacity of the tong are improved.

A screw device for compressing and fixing together a proximal and distal bone part along a surgical axis comprising: a bone screw portion comprising an elongate body inscribed with bone screw threads at a leading end of an outer surface of said body; an elongate tubular torque stabilizer portion for spanning said bone parts and comprising one or more torsion stops to engage each bone part to limit rotational movement between the bone parts and a translation stop on said torque stabilizer to seat against a portion of the proximal bone to limit translation of said torque stabilizer portion along the surgical axis; and a compressor lock portion engaging the bone screw portion and torque stabilizer portion to draw said bone screw portion proximally along the surgical axis toward said translation stop therein compressing said one parts together.

A stabilization assembly for stabilizing a vertebra or other bone includes: at least two rods having different diameters; an anchoring element having a shaft and a head; a receiving part for interchangeably receiving any one of the rods to connect the rod to the anchoring element, the receiving part including a rod receiving portion with a channel for receiving the rod, and a head receiving portion having an open end and being flexible to allow introduction and clamping of the head; and a locking ring configured to be arranged around the head receiving portion and to clamp the head in the head receiving portion; wherein the locking ring includes a contact surface configured to contact any one of the at least two rods at at least two distinct contact areas that are spaced apart from one another in a circumferential direction of the rod.

Integrated prosthetic element usable for bone implant operations or as a bone filler or replacement, comprising at least a metal support and an insert made of plastic material coupled with at least a first surface of said metal support so as to define a wear surface, or insert, of adjustable thickness. The metal support comprises, on the side opposite said first surface, a second surface intended to be coupled with the bone part on which the prosthesis or bone replacement is installed. The first surface comprises a layer having cavities or holes distributed in a substantially uniform manner and suitable for anchorage and solidarization of the plastic material that makes up the insert, while said second surface comprises a porous layer suitable to optimize the bone anchorage. The first surface and the second surface are separated by a compact layer that stops the plastic material in the step of forming the plastic insert. The cavities or holes of the first surface have bigger shapes and sizes than, and in any case different from, the pores of the second surface.

The invention discloses a device for measuring the bone density through a reference module. The device comprises a digital X-ray imaging device used for collecting a projected image of a measured bone, an image preprocessing device used for preprocessing the image containing the measured bone, an image segmenting processing device used for segmenting the preprocessed image of the measured bone, a bone decay factor calculating device used for calculating bone decay factors of an irradiated part according to the decay characteristic of an X-ray and a bone density equivalent analysis device, wherein the bone density equivalent analysis device enables a m (x,y) value to correspond to an area with the same m (x,y) value in the image formed by a reference module with a known equivalent bone density value, and the equivalent bone density value of the corresponding reference module area is a bone density value of the measured bone part. Compared with a traditional DXA method, the device has the advantages of being high in measurement accuracy, convenient to operate and the like.