Patent
Porous and transparent poly(vinyl alcohol) gel and method of manufacturing the same
Suong-Hyu Hyon,Yoshito Ikada +1 more
TLDR
In this article, a porous and transparent hydrated gel is prepared from a poly(vinyl alcohol) solution in a mixed solvent consisting of water and an water-miscible organic solvent.Abstract:
A porous and transparent hydrated gel is prepared from a poly(vinyl alcohol) solution in a mixed solvent consisting of water and an water-miscible organic solvent. Upon cooling the poly(vinyl alcohol) solution below room temperature, a gel is formed as a consequence of crystallization of poly(vinyl alcohol) molecules. Exchange of the organic solvent included in the gel with water produces a hydrated gel of poly(vinyl alcohol) which has a high tensile strength, a high water content, and a high light transmittance.read more
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Hydrogel intervertebral disc nucleus
Qi-Bin Bao,Paul A. Higham +1 more
TL;DR: A hydrogel prosthetic nucleus for an intervertebral disc, having equilibrium water contents (EWC) of from about 30 to about 90 % and compressive strengths of at least 4 meganewtons per square meter (MNm-2) at their EWCs, when subjected to the same constraints as the normal nucleus, comprising one or more xerogel rods containing from zero to less than the EWC as mentioned in this paper.
Patent
Device and method for controlling injection of liquid embolic composition
Andrew H. Cragg,Blair D. Walker,II John Perl,Michael L. Jones,George Robert Greene,George Wallace,Richard J. Greff +6 more
TL;DR: In this paper, a liquid embolic delivery system is provided for trapping an injected liquid-embolic composition to prevent the liquid from solidifying or otherwise passing outside of an embolization area.
Patent
Intervertebral disc nucleus implants and methods
TL;DR: The nucleus pulposus implant as discussed by the authors is a load bearing elastic body surrounded in the disc space by an anchoring, preferably resorbable, outer shell, and the elastic body is surrounded by a supporting member, such as a band or jacket.
Patent
Artificial intervertebral disc replacement methods and apparatus
TL;DR: Artificial disc replacements for natural intervertebral discs make use of a shaped body having a final volume sized to consume at least a portion of an intervebral disc space and a filling within the shaped body enabling the body to cyclically compress and expand in a manner similar to the disc material being replaced as mentioned in this paper.
Patent
Implantable tissue repair device
Qi-Bin Bao,Hansen A. Yuan +1 more
TL;DR: A surgical device and related method and kit for use in sealing a biological aperture in situ is described in this paper in one embodiment, the device is provided in the form of an expandable, porous material such as poly(vinyl alcohol).