Patents by Inventor Richard L. Lindstrom

Richard L. Lindstrom has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4715858
    Abstract: A synthetic epicorneal lens for use in the treatment of refractive errors. The lens is of a plastic that is compatible with the cornea, may be gas permeable or metabolite permeable, and may be coated with a basement membrane material such as fibronectin or laminen. The lens can be made from polymers, hydrogel, silicone, fluoropolymer, cellulose acetate butyrate, or other like material.
    Type: Grant
    Filed: July 25, 1986
    Date of Patent: December 29, 1987
    Inventor: Richard L. Lindstrom
  • Patent number: 4713375
    Abstract: Viscoelastic solution including a buffered solution, 1-8% cellulose gum and 1-8% chondroitin sulfate, pH adjusted to 7.2-7.6 at a osmolality between 200-400 MOSM. The buffered solution can be HEPES buffered minimum essential media (MEM), phosphate buffer system (PBS), balanced salt solution, or TC199.
    Type: Grant
    Filed: August 1, 1985
    Date of Patent: December 15, 1987
    Inventors: Richard L. Lindstrom, Debra L. Skelnik
  • Patent number: 4711638
    Abstract: Intraocular lens including a lens optic having two haptic loops secured substantially adjacent to each other near a common point of the lens optic, and extending about the lens optic to a position opposing the common point of securement about the lens optic. The haptic loops can include notches and positioning holes and the optics can include positioning holes. The mirror image haptic loops assume geometrical haptic configurations of circular segments substantially conforming equidistantly about the circumference of the lens, a two straight sided configuration with a connecting outwardly curved circular segment, a two straight sided configuration with a connecting inwardly curved circular segment, two circular segments with a connecting inverted circular segment, or three circular segments with two connecting inverted circular segments. The lens optics can be plano-convex, bi-convex, meniscus or other like optic configurations, including reversed optics. The lenses can be lathe cut or injection molded.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: December 8, 1987
    Inventor: Richard L. Lindstrom
  • Patent number: 4696917
    Abstract: An irrigation solution which provides the anterior and posterior chamber of the eye protection during surgical procedures that require irrigation. This irrigation solution is composed of a HEPES buffered Eagle's Minimum Essential Media (MEM) with Earle's Salts, without phenol red, supplemented with mixed isomers of 99% pure, chondroitin sulfate, MEM non-essential amino acids, 2-mercaptoethanol, and sodium pyruvate.
    Type: Grant
    Filed: August 1, 1985
    Date of Patent: September 29, 1987
    Inventors: Richard L. Lindstrom, Debra L. Skelnik
  • Patent number: 4695536
    Abstract: A universal tissue preservation system including a storage container and a preservation media for corneal and other tissue storage. The universal corneal preservation system provides for closed system storage (media not changed) at 4.degree. centigrade under refrigeration for 1-14 days or 34.degree. centigrade storage in an incubator for at least 35 days (five weeks). The storage system provides for a quarantine technique insuring sterility, and a special media for maintaining cell viability and corneal deturgescence, (normal thickness). The corneal storage container provides for endothelial cell photography and media sampling. The preservation media can also be utilized in an open batch technique (media changed at regular intervals) for storage of corneas over one year. In addition, the preservation media can be used as an intraocular irrigation fluid during surgery.
    Type: Grant
    Filed: January 10, 1984
    Date of Patent: September 22, 1987
    Inventors: Richard L. Lindstrom, Donald J. Doughman, Debra Skelnik
  • Patent number: 4619656
    Abstract: Intraocular lens implant including an optic such as a plano-convex lens, a plurality of outwardly extending loops, and at least one key-hole affixed to one of the loops. In one embodiment, a plano-convex posterior chamber lens implant is provided with at least one key-hole loop in one of the two loops for turn-key insertion by locking a turn-key insertion instrument into a key-hole where the key-hole is at one end of one or both of the loops. The key locking into the key-hole provides for turn-key insertion of the loop with stable, secure, fixation, and control of the superior loop providing movement in all directions and all planes. This provides for rotation of the loop to rotate the lens implant posterior to the iris or into the capsular bag during a superior loop insertion technique.
    Type: Grant
    Filed: January 10, 1984
    Date of Patent: October 28, 1986
    Inventor: Richard L. Lindstrom
  • Patent number: 4580299
    Abstract: One-size intraocular lens including a lens optic, one flexible secured loop and an other flexible free-end measured loop. Each loop assumes a U-shaped configuration and can be provided with an appropriate vault whether the lens is implanted into the anterior chamber or the posterior chamber. The lens and loop are constructed from a single monomer such as polymethylmethacrylate (PMMA) providing for stability, low mass, and flexibility in three degrees of freedom, particularly with respect to the ends. A lens template accompanies the lens for cutting the free end of the loop with the unsecured end to a predetermined length for engaging into the tapered hole for a subsequent mechanical frictional engagement therein. The loops are vaulted for a standard vault between the plane of the base of each loop and the plano surface of the lens optic.
    Type: Grant
    Filed: October 19, 1983
    Date of Patent: April 8, 1986
    Assignee: Surgidev Corp.
    Inventor: Richard L. Lindstrom