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1. (WO1996024314) METHOD AND APPARATUS FOR LENTICULAR LIQUEFACTION AND ASPIRATION
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/1996/024314 International Application No.: PCT/US1995/017072
Publication Date: 15.08.1996 International Filing Date: 18.12.1995
Chapter 2 Demand Filed: 22.08.1996
IPC:
A61B 17/00 (2006.01) ,A61B 18/00 (2006.01) ,A61B 18/04 (2006.01) ,A61F 9/007 (2006.01) ,A61M 1/00 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
17
Surgical instruments, devices or methods, e.g. tourniquets
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
18
Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
18
Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
04
by heating
[IPC code unknown for A61F 9/07]
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
M
DEVICES 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
1
Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
Applicants:
ANDREW, Mark [US/US]; US
ANDREW, Mylina [US/US]; US
Inventors:
ANDREW, Mark; US
ANDREW, Mylina; US
Agent:
LEHRER, Norman, E. ; 1205 North Kings Highway Cherry Hill, NJ 08034, US
Priority Data:
08/384,65506.02.1995US
Title (EN) METHOD AND APPARATUS FOR LENTICULAR LIQUEFACTION AND ASPIRATION
(FR) PROCEDE ET DISPOSITIF DE LIQUEFACTION ET D'ASPIRATION LENTICULAIRE
Abstract:
(EN) A technique is described for liquefying, or gelling, a hardened, cataractous lens nucleus (42), and aspirating the same. Heat or heated solution (30) is delivered to the lens nucleus (42) in vivo so that the heat or heated solution is placed in contact with the hardened nucleus in order to heat and liquefy the same. The lens nucleus (42) is irrigated simultaneously with a cooled solution (34) to thereby limit to a very small area where the heat or heated solution is present in the eye (40). This allows the surgeon precise control over which intraocular anterior segment structures are exposed to the heat or heated solution (30). The liquefied lens nuclear material is then aspirated (22, 36, 37) from the eye. The above allows the removal of a lens nucleus through a 1 mm to 2 mm corneal limbus incision (46) which is smaller than previously known small incision cataract techniques. The above benefits the patient as it allows small incision cataract removal that is non-traumatic to intraocular structures. The above benefits the surgeon, and the patient, in that it is a relatively straightforward and easy surgical maneuver for the surgeon to perform. This is in stark contrast to current phacoemulsification, which is potentially very traumatic to intraocular structures, and which is a relatively difficult surgical maneuver to perform.
(FR) L'invention concerne un procédé pour la liquéfaction ou bien la gélification d'un noyau de cristallin cataracté (42), et pour l'aspiration dudit noyau. On infiltre $i(in vivo) une solution chaude ou réchauffée (30) qui, au contact avec le noyau de cristallin (42) durci chauffe et liquéfie ce noyau. Ledit noyau (42) est irrigué simultanément par une solution refroidie (34), en vue de réduire à une zone très peu étendue l'emplacement qu'occupe la première solution dans l'÷il (40). Ainsi, le chirurgien détermine avec précision les structures des segments antérieurs intra-oculaires exposées à l'action de la solution chaude ou réchauffée (30). Ensuite, le noyau de cristallin liquéfié est extrait de l'÷il par aspiration (22, 36, 37). Le procédé susmentionné permet d'extraire un noyau de cristallin à travers une incision du limbe scléro-cornéen mesurant entre un et deux millimètres (46), soit une dimension inférieure à celle des petites incisions pratiquées antérieurement pour la cataracte. Pour le patient, une extraction par petite incision n'a aucun effet traumatique sur les structures intra-oculaires. L'avantage pour le chirurgien, mais aussi pour le patient, est que l'intervention suppose une manipulation relativement simple et facile à exécuter. Il s'agit d'un net progrès par rapport à la technique actuelle de phacoémulsification qui, elle, peut avoir des effets très traumatiques sur les structures intra-oculaires et suppose une manipulation relativement difficile à effectuer.
Designated States: AU, CA, JP
European Patent Office (EPO) (AT, BE, CH, DE, DK, ES, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)