Abstract: An implant for ingrowth of osseous tissue is constructed of a hollow skeletal three-dimensional support member having a plurality of openings for the ingrowth of osseous tissue into an interior cavity. The surfaces of the beams defining the openings may also be roughened to promote the fusion of tissue.
Abstract: A soft intraocular lens with an insert which can be molded into an optic having an optic attachment member embedded in the optic and a haptic attachment member extending out of the optic to which a haptic may be connected. The insert permits the easy attachment of the haptic to the optic without subjecting the haptic material to the rigors of the processes by which the soft optic is made.
Abstract: The invention comprises an IOL with at least a center zone and two concentrically located ring zones arranged thereabout, the center zone having a distance power correction. The first concentric ring zone has a near power correction and the second concentric zone a distance power correction. In one embodiment the lens body is provided with haptics which act to center the lens body when it is surgically implanted within the posterior lens capsule.In other embodiments, the lens diameter is increased to mate with the internal dimensions of the posterior lens capsule or is provided with an encircling haptic which bears against the posterior lens capsule.
Abstract: A biocompatible and pliable metallic surgical implant plate for use in the repair and rigid fixation of internal fractures of the floor and walls of the orbit. The implant plate includes an elongated base portion which is compliant for shaping to interface with the rim structure of the orbit. Three perforated leaf portions, spaced from one-another, project rearwardly from the elongated base portion. The central leaf portion is compliant for shaping to conform to the configuration of the orbit floor, one of the outboard leaf portions is compliant for shaping to conform to the medial wall of the orbit and the other outboard leaf portion is compliant for shaping to conform to the lateral wall of the orbit.
Abstract: In an endoprosthesis with two or more individual parts (1, 2), of which one has a cone part (2) with a conical bore (4) and of which another has a cone part (1) with a complementary conical projection (3), the parts (1, 2) being connected by inserting the conical projection (3) into the conical bore (4), a particularly firm connection is achieved by virtue of the fact that a securing screw (6) is provided in the area of the cone connection (3, 4). The securing or fastening screw (6) advantageously cooperates eccentrically with the corresponding recess in the other part, in order to prestress the cone connection for the purpose of a still firmer connection.
Abstract: A stent for reinforcing a vessel wall is disclosed. The stent is constructed from a single elongated wire. The wire is first bent into a series of tight bends. The wire is then rolled around a mandrel to create junctions of wire which are permanently adhered. The completed stent forms a cylindrical form which can be expanded from an initial diameter to a larger implanted diameter by application of a radially outward force from a balloon catheter or the like.
Abstract: In one implantation process, the intraocular lens implant is placed partially or completely on the anterior capsular surface of the human crystalline lens and is attached thereto by means of glue or adhesive. The implant has overall edge-to-edge dimensions such that it does not extend beyond the periphery of the human lens. In several embodiments, adhesive receiving wells are formed in the implant lens near the periphery to facilitate attachment of the implant lens to the human lens. In another embodiment, the implant lens has structure extending from its posterior side for engaging the human lens to space the implant lens from the human lens. In still another embodiment the posterior side of the implant lens is vaulted such that the central portion of the implant lens does not engage the human lens.In another implantation process, the intraocular lens is attached to a previously implanted intraocular lens for optical correction purposes. Attachment may be with adhesives or mechanical means such as clips.
Abstract: A total knee arthroplasty prosthesis wherein the lateral femoral condyle is recessed more into the femur and is sloped cephalod and posterior when implanted on the femur when compared with the medial femoral condyle.
Abstract: The present invention provides for an air cell or cells which may be placed into an existing prosthesis or incorporated into a newly fabricated prosthesis. The air cell is provided with means for manually adjusting the degree of inflation of the air cell so that changes in volume of the residual limb may be compensated for as required. Inflation of the air cell is accomplished by a fingertip operated pump which incorporates a valve for exhausting air from the air cell. The air cell is provided with a number of internal beams which limit the inflation of the air cell to prevent ballooning. One embodiment of the invention incorporates an internal needle valve to allow removal of the air pump.
Abstract: An artificial intraocular lens or optic is attached to the capsular membrane or iris of the eye with adhesive after the human lens is removed or upon removal of a previously implanted artificial intraocular lens. The optic also may be attached to the iris with adhesive with the human lens in place to correct for deficiencies of the eye. The lens implant may have holes or wells for receiving adhesive for attachment purposes.
Abstract: An intraocular lens comprising at least one fixation member and an optic. The fixation member has an attachment region with a roughened outer surface. The attachment region is received within the optic to attach the fixation member to the optic. The roughened outer surface improves the adhesion of the fixation member to the optic.
Type:
Grant
Filed:
December 14, 1990
Date of Patent:
July 28, 1992
Assignee:
Allergan, Inc.
Inventors:
Daniel G. Brady, Stanley Van Gent, David A. Fencil
Abstract: There is disclosed a new and improved intraocular lens (IOL) for use by surgeons as a replacement for a person's cataractous lens. The disclosed lens is a synthetic sapphire lens having either a silicone or polyimide haptic thereby making the lens autoclavable. The lens is resistant to damage caused by YAG laser and eliminates the need for ridges of any kind on the surface of the lens which has previously been used to keep the lens off the posterior capsule of the crystalline lens. Eliminating the need for a ridge now allows the lens to be made much thinner and also eliminates the tiddlywink effect. The new IOL is approximately 1/3 to 1/5 the thickness of standard PMMA IOLs and is totally non-degradable.
Abstract: The cap for a femur head can be imbedded without the use of cement and includes an outer shell of hemispherical shape so that forces an be transferred in various positions of the joint without any discontinuity in the surface. In addition, an inner shell is secured within the outer shell and is provided with a conically tapered internal surface at the outer edge and an internal self-tapping screw thread for screwing onto a stump of a femur head. The shell also has an internal curved surface for abutting against the stump to inhibit continued threading of the cap onto the stump. Internal cutting rings may also be provided internally of the inner shell for cutting into the osseous tissue of the femur head.
Abstract: An intraocular lens utilizing an optical portion which is capable of vision correction. The optical portion connects to a flexible body which includes a fissure permitting said flexible body to unravel into to an element having a relatively narrow transverse dimension. The flexible body is also capable of reforming into a substantially unitary element having a relatively large transverse dimension.
Abstract: An ophthalmic implant for draining aqueous humor from the anterior chamber of the eye comprises a transcleral conduit having an inlet opening at one end thereof for communicating with the anterior chamber of an eye, and an outlet opening at an opposite end of the conduit for draining fluid from the anterior chamber. An elongated arch shaped subconjunctival channel is connected to the conduit and has an inlet opening into the channel for communicating with the outlet opening of the conduit, the channel having an outlet openings for discharging fluid from the conduit, subconjunctivally over the sclera of the eye. A one-way flow resisting valve is provided in the conduit for allowing a flow of fluid to pass under resistance and in only one direction from the inlet to the outlet of the conduit, whereby pressure in the anterior chamber is relieved while avoiding excessive outflow of fluid from the anterior chamber.
Abstract: Osteosynthesis means comprising a plate secured to one bone fracture segment, and at least a screw inserted inside a hole on the plate and screwed into corresponding holes in the bone segments; characterized by the fact that they comprise an angle joint located between the screw and the hole in the plate, and designed to enable the axis of the screw to be positioned in relation to the plate at any angle within a conical surface whose axis coincides with that of the hole in the plate.
Type:
Grant
Filed:
February 9, 1990
Date of Patent:
July 7, 1992
Inventors:
Pasquale M. Calderale, Francesco Pipino
Abstract: Disclosed is an elastomeric bladder infusion pump which may be used for delivering a pharmaceutically active material to a patient at a substantially constant flow rate. A unitary internal stress member or mandrel is disposed within the bladder, prestressing the bladder in both the axial and radial dimensions.
Abstract: A prosthetic implant for insertion into a cement filled intramedullary canal including a plurality of spacers formed from PMMA. The spacers include a body having a frontal portion and a trailing portion. The body of the spacers narrowing with distance from said frontal portion toward said trailing portion. The narrowing body of the spacers interrupting the flow of cement along the implant body as the body is inserted into a cement filled intramedullary canal. The narrowing trailing portion of the spacers cause the cement flow to smoothly re-attach to the implant body without creating substantial disturbances or vortexes in the cement.
Type:
Grant
Filed:
February 28, 1991
Date of Patent:
May 26, 1992
Assignee:
Zimmer, Inc.
Inventors:
Leda C. Hewka, Perry A. Geremakis, Mark B. Lester, Jack E. Parr
Abstract: A method for locating on a cornea an artificial lens fabricated from a collagen-hydrogel for promoting epithelial cell growth and regeneration of the stroma is shown. The method provides for affixing an artificial lens to the Bowman's membrane and the lens, during the healing process, promotes and supports epithelial cell growth enabling corneal epithelium of the cornea of an eye to attach to and cover the anterior surface of the lens implanting the same and to regenerate the stroma which grows over the edge of and attaches to the optical lens. Laid down in the layers of the regenerated stroma are new keratocytes and collagen fibial produced from keratocytes. The collagen-hydrogel is a hydrogel polymer formed by the free radical polymerization of a hydrophilic monomer solution gelled and crosslinked in the presence of an aqueous stock solution of collagen to form a three dimensional polymeric meshwork for anchoring collagen.
Type:
Grant
Filed:
February 15, 1991
Date of Patent:
May 12, 1992
Assignee:
CBS LENS, a California general partnership
Abstract: A method of treating female incontinence comprising looping a filamentary element (19) between the wall of the vagina (16) and the rectus abdominis sheath in the anterior wall of the abdomen whereby it passes to each side of the urethra (20) into the correct spatial relationship to the pubis (17), allowing the development of scar tissue between the vaginal wall (16) and the rectus abdominis sheath and removing the filamentary element (19).