摘要:
A spinal fixation assembly includes a pedicle rod and pedicle screws which secure the pedicle rod to the spine. Each pedicle screw includes a head configured to receive a portion of the pedicle rod, and a threaded portion extending from a first end of the head and configured to engage a vertebra. The pedicle rod is secured to the head by a fastener. The head includes a breakaway region that defines a location in which at least a first portion of the head can be easily separated from the remainder of the head upon application of sufficient force to the first portion. A minimally invasive method of implanting the spinal fixation assembly is disclosed.
摘要:
A spinal fixation assembly includes a pedicle rod and pedicle screws which secure the pedicle rod to the spine. Each pedicle screw includes a head configured to receive a portion of the pedicle rod, and a threaded portion extending from a first end of the head and configured to engage a vertebra. The pedicle rod is secured to the head by a fastener. The head includes a breakaway region that defines a location in which at least a first portion of the head can be easily separated from the remainder of the head upon application of sufficient force to the first portion. A minimally invasive method of implanting the spinal fixation assembly is disclosed.
摘要:
A device for fixing soft tissue. A sleeve is detachably connected to a self-drilling tapping screw, moving and rotating the self-drilling tapping screw. A guide bar is detachably connected to the self-drilling tapping screw and fit in the sleeve. A fixing pin is fit in a washer and connected to the self-drilling tapping screw. The guide bar is detachably fit in the fixing pin. The fixing pin abuts the washer and the self-drilling tapping screw.
摘要:
An apparatus for anulus fibrosus repair includes a shaft, a pair of curved suturing needles mounted in parallel on the shaft, and a rotational driving mechanism connected to the shaft, which is configured to rotate the shaft and the pair of needles about a rotation axis of the shaft. Each needle includes a substantially semi-annular body having a proximal end, a distal end, an inner periphery, and an outer periphery, and an arm extending radially inward from the proximal end, in which a concavity is formed in the body proximate to the distal end extending in a direction away from it. Also disclosed is a suturing technique associated with use of the repair apparatus.
摘要:
A porous chamber for tissue culture in vitro. The porous chamber includes a main body made of porous biologically absorbable polymer material, comprising an inner surface surrounding a hollow cavity, the hollow cavity having an aperture opened at an upper surface of the main body, wherein the aperture is communicated with outside of the main body for seeding tissue blocks in the hollow cavity, and an upper cover passing through the upper surface of the main body to seal the aperture to prevent the tissue blocks from outflowing.
摘要:
An artificial dura biomedical device and a brain surgery method utilizing the same are disclosed. The steps includes: fixing an artificial dura to a partial skull; and fixing the partial skull with the artificial dura to a cut hole of a whole skull. The artificial dura biomedical device includes an artificial dura and a connecting element. The connecting element fixes the partial skull with the artificial dura.
摘要:
An apparatus for washing cells and/or tissue includes an outer sleeve, an inner assembly, and a filter. The outer sleeve includes a closed end and an open end. The inner assembly is axially movable in the outer sleeve. The filter is affixed to the inner assembly, wherein a chamber is formed by the filter, the outer sleeve, and the inner assembly. Furthermore, a process for washing cells and/or tissue comprising: (a) providing an apparatus as described above, wherein the cells and/or tissue and washing liquid are disposed in the chamber, and (b) axially moving the inner assembly to wash the cells and/or tissue.
摘要:
A tissue homogenizer. The tissue homogenizer comprises a first chamber, a pair of blades, a first filter and a second filter. The first chamber has a first opening and a second opening. The blades are disposed in the first chamber. The first filter is disposed in the first chamber between the first opening and the blades. The second filter is disposed in the first chamber between the second opening and the blades. A tissue piece is placed between the first filter and the second filter cut by the blade, and moved by a fluid through the second filter to generate homogenized tissue pieces.
摘要:
The present invention provides method and carrier for culturing multi-layered tissue in vitro, wherein few amounts of tissue blocks and cells are positioned within a porous multi-layer carrier consisting of a cavity structure. By taking advantage of the structure of the carrier, tissue blocks and cells are separated into different layers according to their sizes, and incubated in vitro to reconstruct a multi-layered tissue for tissue repair.
摘要:
The present invention discloses a method for preparing a hydrophilic porous polymeric material comprising the step of mixing a hydrophilic polymeric material with a hydrophobic material; solvent sintering the surface of the hydrophilic polymeric material with water or an aqueous solution; and removing the hydrophobic material contained within the hydrophilic polymeric material with a massive organic solvent. Thus, the hydrophilic porous polymeric material with high porosity and stable structure is rapidly mass produced.