13 results about "Primary bone" patented technology

Bone compression device with a primary body (2) having a primary bone fixation pin assembly (4, 5) extending at an angle to the longitudinal axis (A), and a secondary body (3) having a secondary bone fixation pin assembly (6, 7) extending at an angle to the longitudinal axis (A). The secondary body (3) is positioned in the inner bore (2a) and moveable with respect to the primary body (2) over an adjustment range. The primary body (2) comprises a guide pin (8) and the secondary body (3) comprises a guide slot (9) having an inner guide slot (9a), the guide pin (8) extending through the guide slot (9) and in contact with the inner guide slot (9a) during operation. An adjustment assembly (10) is provided which is connected to the primary body (2) and secondary body (3) for mutual adjustment thereof along the longitudinal axis (A).

Bone anchor assemblies are disclosed herein that can provide for improved fixation as compared with traditional bone anchor assemblies. An exemplary assembly can include a bracket or wing that extends down from the receiver member and accommodates one or more auxiliary bone anchors that augment the fixation of the assembly's primary bone anchor. Another exemplary assembly can include a plate that is seated between the receiver member and the rod and accommodates one or more auxiliary bone anchors that augment the fixation of the assembly's primary bone anchor. Another exemplary assembly can include a hook that extends out from the receiver member to hook onto an anatomical structure or another implant to augment the fixation of the assembly's primary bone anchor. Surgical methods using the bone anchor assemblies described herein are also disclosed.

Bone anchor assemblies and related methods are disclosed herein that can provide for improved fixation of a primary bone anchor. A bone anchor assembly can include a base rotatably received within a rod-receiving member. The base can have a toroid body with a radially-extending portion including at least one auxiliary bone anchor opening that can receive an auxiliary bone anchor to augment fixation of a primary bone anchor of the bone anchor assembly. The base can be rotated relative to the rod-receiving member and the primary bone anchor such that the at least one auxiliary bone anchor opening can be placed in a desired position for supplemental fixation.

The invention relates to the technical field of medical orthopedic materials, and discloses a preparation method of a degradable bone nail, which comprises the following steps: preparing 28 parts of polylactic acid-glycolic acid copolymer; 20 parts of silk protein; 8 parts of polyvinyl alcohol; 3 parts of zinc alloy; 17 parts of poly (p-dioxanone); the preparation method comprises the following steps: pretreating a part of raw materials, carrying out melt blending to obtain a mixture, carrying out melt spinning molding on the mixture from an extruder through a spinneret plate of a melt spinning machine to obtain a stable composite material, and carrying out extrusion molding on the composite material through a mold to obtain a primary bone nail shape. A high-precision lathe is used for turning the formed bone nail, the surface of the bone nail is coated with a nano-silver / hydroxyapatite composite coating, the bone nail subjected to plasma treatment is subjected to radiation sterilization through gamma rays, and after sterilization, the bone nail is packaged in a sealed mode through a sterile packaging material. The obtained bone nail has the advantages of biocompatibility, degradability, high mechanical strength and high toughness.

Bone anchor assemblies are disclosed herein that can provide for improved fixation as compared with traditional bone anchor assemblies. An exemplary assembly can include a bracket or wing that extends down from the receiver member and accommodates one or more auxiliary bone anchors that augment the fixation of the assembly's primary bone anchor. Another exemplary assembly can include a plate that is seated between the receiver member and the rod and accommodates one or more auxiliary bone anchors that augment the fixation of the assembly's primary bone anchor. Another exemplary assembly can include a hook that extends out from the receiver member to hook onto an anatomical structure or another implant to augment the fixation of the assembly's primary bone anchor. Surgical methods using the bone anchor assemblies described herein are also disclosed.

Disclosed herein are bone anchor assemblies and related methods that can provide improved fixation of a primary bone anchor. A bone anchor assembly (100) includes a base (104) rotatably received within a rod receiving member (106). The base has an annular body with a radially extending portion (116) that includes at least one supplemental bone anchor opening (124) that can receive a supplemental bone anchor to augment fixation of a primary bone anchor of the bone anchor assembly. The base is rotatable relative to the rod receiving member and the primary bone anchor such that the at least one supplemental bone anchor opening can be placed in a desired location for supplemental fixation.

Disclosed herein are bone anchor assemblies and related methods that can provide improved fixation of a primary bone anchor. The bone anchor assembly can include a wing having a distal portion that can define a plurality of auxiliary bone anchor openings. Each auxiliary bone anchor opening can receive an auxiliary bone anchor that can enhance fixation of the primary bone anchor of the bone anchor assembly. The plurality of auxiliary bone anchor openings can be oriented such that when the wing is coupled to the primary bone anchor assembly of a vertebral segment in a first configuration, at least one auxiliary bone anchor can be driven to extend across a facet plane of the vertebral segment, and when coupled in a second configuration, each auxiliary bone anchor received within the wing can be driven to conform to the vertebral segment.

The invention relates to the technical field of organoid culture, in particular to a bone trabecula organoid with osteoclast metabolism activity as well as preparation and application of the bone trabecula organoid. The method comprises the following steps: culturing bone marrow primary cells, collecting mononuclear cells and a culture medium containing M-CSF, and performing adherence and amplification to obtain osteoclast precursor cells; uniformly mixing the osteoclast precursor cells with a bone organ with autonomous mineralization ability, adding the mixture into a low-adhesion plate, and culturing the mixture in a culture medium containing M-CSF to obtain a bone trabecula organ; and finally, carrying out induction treatment on the bone trabecula-like organ by utilizing a culture medium containing RANKL and M-CSF to obtain the bone trabecula-like organ with osteoclast metabolism activity. The bone trabecula-like organ with osteoclast metabolism activity prepared by the invention can be further applied to osteoclast-osteogenesis interaction research, drug screening or target verification.

Devices, systems, instruments, and methods for promoting healing and stability for bone fractures. Large fragment plating systems with a variety of plate styles allow for reduction of the fracture to achieve primary bone healing. Compression and / or distraction may be applied to the bone fragments during the procedure with an external instrument, such as a fracture reduction instrument configured to restore the fracture while implanting the plate.

Bone anchor assemblies are disclosed herein that can provide for improved fixation as compared with traditional bone anchor assemblies. An exemplary assembly can include a bracket or wing that extends down from the receiver member. The distal portion of the wing can define a bone anchor opening through which one or more auxiliary bone anchors can be disposed to augment the fixation of the assembly's primary bone anchor. A distal surface of the distal portion of the wing can be obliquely angled relative to a proximal-distal axis of the spanning portion to face one of a caudal direction or a cephalad direction. A distal surface of the distal portion of the wing can be obliquely angled relative to the proximal-distal axis of the spanning portion to face one of a medial direction or a lateral direction. Surgical methods using the bone anchor assemblies described herein are also disclosed.

The application discloses a kind of biomimetic radial lamella porous hydroxyapatite bone repair materials, including several axial stacking radial lamella and substructure inside radial lamella, radial lamella is made of several radially inward radiation extending lamellar structure unit, biomimetic porous hydroxyapatite bone repair material is the microstructure morphology with long-range order and radial symmetry;The application also discloses the preparation method of the biomimetic porous hydroxyapatite bone repair material.The biomimetic porous hydroxyapatite bone repair material is designed as the radial lamella of axial stacking, and substructure is designed inside radial lamella, can improve the material interaction efficiency between body fluid, primary bone tissue and implant material, and realize the anisotropy of mechanical property, strengthen bone repair effect, applicable to biological medical field.

This invention provides a technique for more easily and accurately determining the posture of bones in virtual representations of human characters in virtual space or in robots that exist in real space. A posture determination method, in a skeletal model where a primary bone and secondary bones are connected by joints, determines the posture of a secondary bone based on multiple parameters defining the rotation of the secondary bone relative to the primary bone. The posture determination method includes the following steps: determining at least one of the multiple parameters; correcting the multiple parameters based on the determination; and determining the posture of the secondary bone using the corrected multiple parameters. The determination step includes performing a first determination, which determines whether any one of the multiple parameters exceeds the first limit. The first limit is represented by a limitation that at least one parameter would affect limitations related to two or more other parameters. The correction step includes: if the first determination determines that the first limit is exceeded, correcting the multiple parameters using the first limit so that the multiple parameters fall within the range of the first limit.

Devices, systems, instruments, and methods for promoting healing and stability for bone fractures. Large fragment plating systems with a variety of plate styles allow for reduction of the fracture to achieve primary bone healing. Compression and / or distraction may be applied to the bone fragments during the procedure with an external instrument, such as a fracture reduction instrument configured to restore the fracture while implanting the plate.