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1. WO1996003944 - GLAUCOMA IMPLANT WITH A TEMPORARY FLOW-RESTRICTING SEAL

Publication Number WO/1996/003944
Publication Date 15.02.1996
International Application No. PCT/US1995/009660
International Filing Date 01.08.1995
Chapter 2 Demand Filed 01.03.1996
IPC
A61F 9/007 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
9Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
007Methods or devices for eye surgery
A61M 27/00 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
27Drainage appliances for wounds, or the like
CPC
A61F 9/00781
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
9Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
007Methods or devices for eye surgery
00781Apparatus for modifying intraocular pressure, e.g. for glaucoma treatment
A61M 27/002
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
27Drainage appliances for wounds or the like, ; i.e. wound drains, implanted drains
002Implant devices for drainage of body fluids from one part of the body to another
Applicants
  • IOVISION, INC. [US]/[US]
Inventors
  • BAERVELDT, George
  • BLAKE, Larry, W.
Agents
  • ALTMAN, Daniel, E.
Priority Data
08/283,96101.08.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) GLAUCOMA IMPLANT WITH A TEMPORARY FLOW-RESTRICTING SEAL
(FR) IMPLANT POUR LE TRAITEMENT DU GLAUCOME DOTE D'UN BOUCHON TEMPORAIRE REDUISANT L'ECOULEMENT
Abstract
(EN)
An implant (10) for use in the treatment of glaucoma is disclosed wherein the implant (10) comprises an elastomeric plate (38) having a non-valved elastomeric drainage tube (41) attached thereto. The plate (38) is curved so as to conform to the spherical anatomy of the eyeball. Sloped wall (66) extends from the plate (38) and surrounds the opening of the drainage tube (41) into the plate (38). The plate (38) is inserted beneath Tenon's capsule (44) and sutured to the sclera (14) utilizing temporary sutures and non-dissolving permanent sutures. The sloped wall (66) provides a temporary sealing surface against the sclera (14). The drainage tube (41) is tunnelled through the sclera (14) and cornea (16) and inserted into the anterior chamber (30), thus providing fluid communication between the anterior chamber (30) and the elastomeric plate (38). The sloped wall (66) around the tube (41) forms a temporary seal which restricts the drainage of aqueous fluid until formation of the bleb (52) is completed. After bleb formation occurs, the temporary sutures around the wall (66) are removed or dissolve. Once the temporary sutures are gone, the portion of the plate (38) that is not stitched to the sclera (14) floats within the bleb (52) and breaks the seal between the implant (10) and the sclera (14). Once the seal is broken, unrestricted flow between the anterior chamber (30) and bleb (52) is maintained.
(FR)
L'invention concerne un implant (10) destiné à être utilisé dans le traitement du glaucome. Ledit implant (10) comporte une plaque élastomère (38) à laquelle est fixé un tube de drainage élastomère (41) sans clapet. La plaque (38) est courbe de sorte qu'elle s'adapte à l'anatomie du globe oculaire. Une paroi (66) en pente s'étend depuis la plaque (38) pour entourer l'ouverture du tube de drainage (41) dans la plaque (38). La plaque (38) est insérée au-dessous de la capsule de Tenon (44) et cousue sur la sclérotique (14) par des points de suture temporaires et des points de sutures permanents non solubles. La paroi en pente (66) constitue une surface de scellement temporaire contre la sclérotique (14). Le tube de drainage (41) traverse la sclérotique (14) et la cornée (16) et pénètre dans la chambre antérieure (30) de l'÷il, ce qui permet d'assurer une communication fluidique entre cette dernière (30) et la plaque élastomère (38). La paroi en pente (66) prévue autour du tube (41) forme un bouchon temporaire qui réduit le drainage du liquide aqueux jusqu'à ce qu'une bulle filtrante (52) se forme. Une fois cette bulle formée, les points de suture temporaires autour de la paroi (66) sont enlevés ou dissous, et la partie de la plaque (38) non cousue à la sclérotique (14) flotte dans la bulle filtrante (52) et rompt le bouchon entre l'implant (10) et la sclérotique (14). Une fois le bouchon rompu, un écoulement non restreint entre la chambre antérieure (30) et la bulle (52) est assuré.
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