Patent classifications
A61F2002/009
Prosthesis for in vivo insertion, coated with cross-linked polyphosphorylcholine
The present invention relates to a coating composition for an in-vivo implantable prosthesis including a photoinitiator, a crosslinking agent, and a phosphorylcholine (PC) monomer having an acrylate group, a method of coating an in-vivo implantable prosthesis using the coating composition, and a cosmetic prosthesis coated with the crosslinked polyphosphorylcholine. An in-vivo implantable prosthesis coated with crosslinked polyphosphoryicholine may be manufactured by a simple method of applying a coating composition including a photoinitiator, a crosslinking agent, and a phosphorylcholine (PC) monomer having an acrylate group according to the present invention, and then irradiating UV rays. The crosslinked polyphosphorylcholine coating may provide hydrophilicity for the surface and may also remarkably reduce adsorption of proteins and fibroblasts, which may cause side effects such as capsular contracture. Further, the coating has strong enough not to peel off even under stimulation, and therefore, it is maintained under vigorous activity after implantation, thereby being usefully applied to the manufacture of an in-vivo implantable prosthesis with reduced side effects, such as breast prosthesis for cosmetic surgery.
Bio-selective surface textures
Bio-selective textured surfaces are described which mediate foreign body response, bacterial adhesion, and tissue adhesion on devices implanted in a mammalian body. Hierarchical levels of texture, some capable of establishing a Wenzel state others a Cassie state, are employed to interface with living structures, either to promote or discourage a particular biological response/interaction. Since a gaseous state is traditionally required to establish a Cassie or Wenzel state, and gases do not remain long in living tissue, described are tissue/device interactions analogous to the above states with the component normally represented by a gas replaced by a bodily constituent, wherein separation of tissue constituents develops and a desired interaction state evolves.
STENT INCLUDING AN EXPANDABLE MEMBER
Example medical stents are disclosed. An example stent includes a tubular framework including an inner surface, an outer surface and a lumen extending therethrough. Additionally, the stent includes a tissue ingrowth scaffold extending along a portion of the outer surface of the tubular framework, wherein the tissue ingrowth scaffold is spaced radially away from the outer surface of the tubular framework to define an expansion cavity therebetween and wherein the tissue ingrowth scaffold permits tissue ingrowth along a portion thereof. Further, the stent includes an expandable member positioned within at least a portion of the expansion cavity.
Patterns for flow control and bioadhesion control
An article includes a path that extends across at least a portion of a surface of the article, the path being defined by at least one channel that traverses at least a portion of the surface or a first plurality of spaced features disposed on or in at least a portion of the surface. The first plurality of spaced features are arranged in a plurality of groupings. The groupings of features comprise repeat units, where the spaced features within a grouping are spaced apart at an average distance of about 1 nanometer to about 500 micrometers to define a path that traverses the plurality of spaced features.
ARTIFICIAL CORNEA
Artificial corneas suitable for surgical implantation are provided. Embodiments of artificial corneas include an optical an optical element that includes a body having an anterior side and a posterior side, an annular flange extending about the body, the anterior side including an anterior optical surface and the posterior side of the body including a posterior optical surface, and a tissue integration skirt coupled to the optical element, the tissue integration skirt being configured to promote tissue ingrowth, the tissue integration skirt being coupled to the optical element such that at least a portion of a periphery of the annular flange defined between the anterior and posterior sides of the optical element is covered by the tissue integration skirt. Also described are methods for implanting an artificial cornea of the present disclosure, the methods including providing the artificial cornea, removing a section of corneal tissue from the patient's cornea to form a tissue bed of existing tissue to which the artificial cornea can be affixed, implanting the art the artificial cornea such that the posterior side of the artificial cornea is suspended above the interior of the eye, and mechanically affixing the implanted artificial cornea to the existing corneal tissue of the tissue bed.
INTRAOCULAR LENSES FOR REDUCING THE RISK OF POSTERIOR CAPSULE OPACIFICATION
Intraocular lenses for reducing the risk of posterior capsule opacification (PCO) are described herein. PCO can be reduced with an IOL design that increases the pressure at the posterior capsular bend, for example, by including a sharper edge design, an enlarged optical zone, and/or an increased vault height. An example ophthalmic lens can include an optic (200) including an anterior surface (202) defining an anterior side of the optic, a posterior surface (204) defining a posterior side of the optic, and an edge (210) arranged between the anterior and posterior surfaces. The edge and the posterior surface can form an angle, where the angle is less than about 90 degrees. Additionally, the ophthalmic lens can have an increased vault height. At least one of the angle or the increased vault height be configured to increase pressure on a capsular bend in a subject's eye.
MULTIPLE LAYER VASCULAR GRAFT
Provided herein our graft devices for a patient comprising one or more layers, such as an inner layer and an outer layer. The inner layer comprises a first porous arrangement of fibers defining a first tube comprising an inner wall and an outer wall. The outer layer comprises a second porous arrangement of fibers defining a second tube comprising an inner wall and an outer wall. The second tube surrounds the first tube. A plurality of macropores extend through at least the inner and outer wall of the first tube. The inner and/or the outer layer can comprise a biofragmentable material configured to mechanically fracture into one or more fragments over time. Methods of creating graft devices are also disclosed.
Stent including an expandable member
Example medical stents are disclosed. An example stent includes a tubular framework including an inner surface, an outer surface and a lumen extending therethrough. Additionally, the stent includes a tissue ingrowth scaffold extending along a portion of the outer surface of the tubular framework, wherein the tissue ingrowth scaffold is spaced radially away from the outer surface of the tubular framework to define an expansion cavity therebetween and wherein the tissue ingrowth scaffold permits tissue ingrowth along a portion thereof. Further, the stent includes an expandable member positioned within at least a portion of the expansion cavity.
Intraocular lens and method of manufacturing the same
There is provided an intraocular lens including an optic portion having a circular shape from one side thereof and including a first pattern which includes a ridge and a groove, and a plurality of haptic portions extending from an outer circumferential edge of the optic portion and each including a second pattern which includes a ridge and a groove, in which at least one of the ridges included in the first pattern and the second pattern and at least one of the grooves included in the first pattern and the second pattern includes a section in which a width is formed differently.
Stent with selectively covered region
A stent with a selectively covered end region. The stent includes a radially expandable tubular framework and a covering surrounding the tubular framework. The covering includes a skirt surrounding a distal end region of the tubular framework which is selectively removable from the distal end region of the tubular framework to expose the distal end region of the tubular framework to permit hyperplastic tissue ingrowth through the distal end region of the tubular framework. For example, the skirt may be folded, rolled, collapsed, or separated from the remainder of the covering to expose the distal end region of the tubular framework.