3 results about "Bone growth" patented technology

The invention discloses a Zn-Sr series zinc alloy as well as a preparation method and application of the Zn-Sr series zinc alloy. The zinc alloy comprises Zn and Sr, wherein the mass percent of Sr in the zinc alloy ranges from 0% to 10%, but is not equal to 0. The zinc alloy also comprises trace elements including Si, P, Li, Ag, Sn and at least one selected from rare earth elements, wherein the mass percent of the trace elements ranges from 0% to 3%, but is not equal to 0. The mechanical property of the Zn-Sr series zinc alloy disclosed by the invention meets the requirements for strength and toughness of a medical implant material, is nontoxic and favorable in tissue compatibility and blood compatibility, can be degraded by using body fluid and can be applied to preparation of medical implants; and the dissolved metal ions can be absorbed and utilized by living bodies to promote bone growth or can be discharged out of bodies through metabolism.

The invention provides a dynamic locking plate for treating a fracture of a neck of a femur. The dynamic locking plate comprises a tuberosity supporting plate and three locking screw holes, wherein the inner surface of the tuberosity supporting plate is bent to be matched with the lower part of a greater trochanter of the femur in shape; the positions of the three locking screw holes including a first locking screw hole, a second locking screw hole and a third locking screw hole in the tuberosity supporting plate are based on a locating point A at the middle of the tuberosity supporting plate, and distributed around the locating point A; the first locking screw hole, the second locking screw hole and the third locking screw hole are distributed to form a triangle in the tuberosity supporting plate; axes of the three locking screw holes are parallel; based on a vertical line AO of the tuberosity supporting plate where the locating point A is positioned, the axial lines of the three locking screw holes are inclined upwards and form longitudinal included angles theta with the vertical line AO, which are equal to 15-35 degrees. The locating point A is located within the range that the geometric center of the tuberosity supporting plate is taken as a center, and the diameter is 4 mm. The dynamic locking plate enables the broken end of a fractured bone to be subjected to micro-movement and compression, and adapts to dynamic characteristics of bone growth when improving the internal fixation stability of the neck of the femur, so as to be more beneficial to healing of the broken end of the fractured bone.

The invention discloses a biological composite material, a preparation method thereof and a biological scaffold. The biological composite material comprises a biocompatible material and further comprises an effective dose of a bone growth promoter, and the bone growth promoter is dispersed in the biocompatible material; wherein the bone growth promoter comprises a lithium source providing lithiumions. The preparation method comprises the following steps: mixing the lithium source for providing the lithium ions, components contained in the biocompatible material and a solvent to prepare slurry, drying the slurry, and the like. The biological scaffold comprises the biological composite material. The biological composite material and the biological scaffold have an excellent function of promoting osteogenesis/chondrogenesis, and the function of promoting osteogenesis/chondrogenesis, and are high in stability and safety and low in cost.