公开(公告)号：DE602007003168D1

公开(公告)日：2009-12-24

申请号：DE602007003168

申请日：2007-09-26

Applicant: ALCON INC

Inventor： WILLIAMS DAVID LLOYD

IPC: F16K1/12

Abstract: A valve system (200) comprising a valve design in which the valve is normally closed is disclosed. The normally closed valve can comprise a circular valve seal face (215) formed by the underside of a rim of an elastomeric valve boss (210) and a circular valve seat (220), which is formed by the rim of a through hole (225) molded into, for example, a plastic cassette (150), such that the valve seal face, the valve seat, and the through hole are concentric. The valve boss can be a hollow "mushroom" shaped valve boss, or a conical-shaped valve boss. If no force is applied to the inside surface (240) of the valve boss, no fluid can pass through the valve as the valve seal face rests against the valve seat as a result of the steady free state load created by the stretch of the valve boss over the slightly longer through hole. When a force (246) is applied to the inside surface (240) of the valve boss (210), the valve seal face (215) is displaced from the valve seat (220), allowing fluid between the valve seal face and the valve seat and then to pass between the valve boss and the inside surface of the through hole.

公开(公告)号：MX2007011878A

公开(公告)日：2009-02-03

申请号：MX2007011878

申请日：2007-09-26

Applicant: ALCON INC

Inventor： WILLIAMS DAVID LLOYD

IPC: A61M35/00

Abstract: Se describe un sistema de válvulas que comprende un diseño de válvula en el que la válvula está normalmente cerrada. La válvula normalmente cerrada puede comprender una cara selladora de la válvula, circular, formada por el lado inferior de una corona de un reborde de válvula, elastomérico y un asiento de válvula circular, el cual se forma por la corona de un agujero pasante moldeado en, por ejemplo, un casete de plástico, para que la cara selladora de la válvula, el asiento de la válvula y el agujero pasante sean concéntricos. El reborde de la válvula puede ser un reborde de la válvula de forma de "hongo", hueco, o un reborde de la válvula de forma cónica. Si no se aplica fuerza a la superficie interna del reborde de la válvula, ningún fluido puede pasar a través de la válvula puesto que la cara selladora de la válvula descansa contra el asiento de la válvula como resultado de la carga del estado libre estacionario creada por el estiramiento del reborde de la válvula sobre el agujero pasante ligeramente más grande. Cuando se aplica una fuerza a la superficie interna del reborde de la válvula, la cara selladora de la válvula se desplaza desde el asiento de la válvula, permitiendo fluido entre la cara selladora de la válvula y el asiento de la válvula y luego pasar entre el reborde de la válvula y la cara interna del agujero pasante.

公开(公告)号：BRPI0703758A

公开(公告)日：2008-05-13

申请号：BRPI0703758

申请日：2007-09-26

Applicant: ALCON INC

Inventor： WILLIAMS DAVID LLOYD

IPC: F16K3/30 ,  A61F9/007

Abstract: A valve system (200) comprising a valve design in which the valve is normally closed is disclosed. The normally closed valve can comprise a circular valve seal face (215) formed by the underside of a rim of an elastomeric valve boss (210) and a circular valve seat (220), which is formed by the rim of a through hole (225) molded into, for example, a plastic cassette (150), such that the valve seal face, the valve seat, and the through hole are concentric. The valve boss can be a hollow "mushroom" shaped valve boss, or a conical-shaped valve boss. If no force is applied to the inside surface (240) of the valve boss, no fluid can pass through the valve as the valve seal face rests against the valve seat as a result of the steady free state load created by the stretch of the valve boss over the slightly longer through hole. When a force (246) is applied to the inside surface (240) of the valve boss (210), the valve seal face (215) is displaced from the valve seat (220), allowing fluid between the valve seal face and the valve seat and then to pass between the valve boss and the inside surface of the through hole.

公开(公告)号：AU2007202848A1

公开(公告)日：2008-01-17

申请号：AU2007202848

申请日：2007-06-19

Applicant: ALCON INC

Inventor： WILLIAMS DAVID LLOYD ,  HOPKINS MARK ALAN ,  KING NICOLEI R

IPC: A61M1/00 ,  A61M5/00

Abstract: Embodiments of the present invention provide top and bottom clamping of a surgical cassette (150). One embodiment of the present invention includes a surgical cassette adapted for use in a surgical system having a first side (170) (e.g., an inner side) and second side (180) (e.g., an outer side). The surgical cassette, according to one embodiment, comprises a body portion (155,205) configured to interface on its first side with a surgical console (100) during use, a first clamping portion (195) projecting from the top of the body portion configured to contact a first clamp rail (182) on the cassette's second side during use and a second clamping portion (190) projecting from the bottom of the body portion configured to contact a second clamp rail (142) on the cassette's second side during use.

公开(公告)号：CA2581616C

公开(公告)日：2015-11-24

申请号：CA2581616

申请日：2007-03-12

Applicant: ALCON INC

Inventor： WILLIAMS DAVID LLOYD ,  DOMASH DAVID ,  CHUN JEFFREY JIKANG

IPC: A61F9/007 ,  A61B17/00

Abstract: Embodiments of the present invention provide a surgical cassette with compliant clamping zones to provide more uniform loading. According to one embodiment of the present invention, a surgical cassette includes a clamping portion that is configured to deform to conform to non-uniform load profile applied to the cassette. The clamping portion can include ribs that are sized and made of a suitable material such that the ribs will deflect predictably in the elastic region and flow plastically when the material yield point is exceeded. The use of ribs creates discrete small load areas that will deflect and distort predictably and non-catastrophically at high loads. This allows for the absorption of accumulated tolerances between the clamping mechanism and cassette (e.g., the non-parallelism between the clamping mechanism and cassette) while still providing a distributed load on the cassette.

公开(公告)号：AU2007219326B2

公开(公告)日：2013-05-02

申请号：AU2007219326

申请日：2007-09-26

Applicant: ALCON INC

Inventor： WILLIAMS DAVID LLOYD

IPC: A61M39/22 ,  F16K1/42

Abstract: Docket 2892 US A valve system comprising a valve design in which the valve is normally closed is disclosed. The normally closed valve can comprise a circular valve seal face formed by the 5 underside of a rim of an elastomeric valve boss and a circular valve seat, which is formed by the rim of a through-hole molded into, for example, a plastic cassette, such that the valve seal face, the valve seat, and the through hole are concentric. The valve boss can be a hollow "mushroom" shaped valve boss, or a conical-shaped valve boss. If no force is applied to the inside surface of the valve boss, no fluid can pass through the valve as the valve seal face rests against the valve 10 seat as a result of the steady free-state load created by the stretch of the valve boss over the slightly longer through hole. When a force is applied to the inside surface of the valve boss, the valve seal face is displaced from the valve seat, allowing fluid between the valve seal face and valve seat and then to pass between the valve boss and the inside surface of the through hole.

公开(公告)号：DE602007006138D1

公开(公告)日：2010-06-10

申请号：DE602007006138

申请日：2007-12-14

Applicant: ALCON INC

Inventor： GAO SHAWN X ,  WILLIAMS DAVID LLOYD ,  ROWE SCOTT T ,  AGAHI DARYUSH

IPC: A61F9/00 ,  A61F9/007 ,  G01F23/292 ,  G01N35/10

Abstract: A continuous high resolution fluid level monitoring system (300) is provided by embodiments of the present invention. This continuous high resolution fluid level monitoring system includes a unique fluid level sensor having a point light source (202), parabolic reflector (204), sensor array (308), and detection, processing and control system (310). The point light source illumines a parabolic reflector wherein the point light source is located at the focus of the parabolic reflector. The parabolic reflector reflects light from the point light source to produce a parallel light curtain (210). This parallel light curtain is parallel to an axis of symmetry of the parabolic reflector. The parallel light curtain illumines a chamber (302) such as a chamber in an ophthalmic surgical device used to contain surgical fluid (304). The sensor array coupled to the chamber detects the parallel light curtain illuminating the chamber. The sensor array provides an output to a detection/processing/control system in order to determine the fluid level within the chamber. This optical method of determining the surgical fluid levels may be advantageous in that it prevents physical contamination of the surgical fluids.

公开(公告)号：SI1906067T1

公开(公告)日：2010-03-31

申请号：SI200730150

申请日：2007-09-26

Applicant: ALCON INC

Inventor： WILLIAMS DAVID LLOYD

IPC: F16K1/00

公开(公告)号：AT448431T

公开(公告)日：2009-11-15

申请号：AT07117291

申请日：2007-09-26

Applicant: ALCON INC

Inventor： WILLIAMS DAVID LLOYD

IPC: F16K1/12

Abstract: A valve system (200) comprising a valve design in which the valve is normally closed is disclosed. The normally closed valve can comprise a circular valve seal face (215) formed by the underside of a rim of an elastomeric valve boss (210) and a circular valve seat (220), which is formed by the rim of a through hole (225) molded into, for example, a plastic cassette (150), such that the valve seal face, the valve seat, and the through hole are concentric. The valve boss can be a hollow "mushroom" shaped valve boss, or a conical-shaped valve boss. If no force is applied to the inside surface (240) of the valve boss, no fluid can pass through the valve as the valve seal face rests against the valve seat as a result of the steady free state load created by the stretch of the valve boss over the slightly longer through hole. When a force (246) is applied to the inside surface (240) of the valve boss (210), the valve seal face (215) is displaced from the valve seat (220), allowing fluid between the valve seal face and the valve seat and then to pass between the valve boss and the inside surface of the through hole.

公开(公告)号：MX2007003776A

公开(公告)日：2008-12-01

申请号：MX2007003776

申请日：2007-03-29

Applicant: ALCON INC

Inventor： WILLIAMS DAVID LLOYD

IPC: F04B43/00

Abstract: Las modalidades de la presente invención proporcionan un sistema y método para permitir a un usuario seleccionar la modalidad de liberación de un cassette quirúrgico. Los ejemplos de modos de liberación pueden incluir un modo instantáneo o de sujeción, un modo continuo o un modo de retrasa. Una modalidad de La presente invención puede incluir proporcionar una interfaz de usuario que permite a un usuario seleccionar un modo de liberación de cassette para un cassette quirúrgico de un juego de modos liberación de cassette, determinar que se asegura una solicitud de liberación, y liberar el cassette quirúrgico de la instrumentación quirúrgica de conformidad con el modo deliberación de cassette seleccionado. De conformidad con una modalidad, los modos de liberación párale cassette pueden incluir en modo instantáneo, un modo continuo y un modo de retraso. El usuario también puede seleccionar, por ejemplo, si la orden de liberación se puede asegurar a través de un botón interfaz de usuario o ambos.