公开(公告)号：AU2007201357B2

公开(公告)日：2013-01-10

申请号：AU2007201357

申请日：2007-03-28

Applicant: ALCON INC

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

IPC: A61B19/00 ,  A61M1/00

Abstract: SURGICAL CASSETTE WITH COMPLIANT CLAMPING ZONE 5 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 to 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 15 mechanism and cassette) while still providing a distributed load on the cassette.

公开(公告)号：PL1906067T3

公开(公告)日：2010-03-31

申请号：PL07117291

申请日：2007-09-26

Applicant: ALCON INC

Inventor： WILLIAMS DAVID LLOYD

IPC: F16K1/12

公开(公告)号：DK1906067T3

公开(公告)日：2010-01-04

申请号：DK07117291

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：AU2007249090A1

公开(公告)日：2008-07-10

申请号：AU2007249090

申请日：2007-12-18

Applicant: ALCON INC

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

IPC: G01F23/292 ,  A61F9/007

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：AU2007219326A1

公开(公告)日：2008-04-10

申请号：AU2007219326

申请日：2007-09-26

Applicant: ALCON INC

Inventor： WILLIAMS DAVID LLOYD

IPC: A61M39/22 ,  F16K1/42

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：CA2604316A1

公开(公告)日：2008-03-26

申请号：CA2604316

申请日：2007-09-26

Applicant: ALCON INC

Inventor： WILLIAMS DAVID LLOYD

IPC: F16K1/00 ,  A61F9/007 ,  F16K1/36 ,  F16K1/38

Abstract: 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 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 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：CA2581616A1

公开(公告)日：2007-09-29

申请号：CA2581616

申请日：2007-03-12

Applicant: ALCON INC

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

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 a nd flow plastically when the material yield point is exceeded. The use of ribs creat es 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：CY1110574T1

公开(公告)日：2015-04-29

申请号：CY091101246

申请日：2009-11-27

Applicant: ALCON INC

Inventor： WILLIAMS DAVID LLOYD

IPC: F16K1/12

Abstract: Αποκαλύπτεταιένασύστημαβαλβίδας (200) πουαποτελείταιαπόένασχέδιοβαλβίδαςκατάτοοποίοη βαλβίδαείναικανονικάκλειστή. Ηκανονικάκλειστήβαλβίδαμπορείνααποτελείταιαπόμίαόψησφραγίδαςκυκλικήςβαλβίδας(215) πουσχηματίζεταιαπότηνκάτωπλευράτηςπαρυφήςμίαςελαστομερούςπροεξοχήςβαλβίδας (210) καιμίαέδρακυκλικήςβαλβίδας (220) πουσχηματίζεταιαπότηνπαρυφήμίαςδιαμέσουοπής (225) πουείναιδιαμορφωμένησεπ.χ. μίαπλαστικήκασέτα (150) έτσιώστεη όψητηςσφραγίδαςτηςβαλβίδας, ηέδρατηςβαλβίδαςκαιη διάμεσοςοπήείναιομόκεντρες. Ηπροεξοχήτηςβαλβίδαςμπορείναείναιμίακοίλησεσχήμα «μανιταριού» προεξοχήβαλβίδαςή προεξοχήβαλβίδαςσεσχήμακώνου. Εάνδενασκείταιδύναμηστηνεσωτερικήεπιφάνεια (240) τηςπροεξοχήςβαλβίδας, δενμπορείναδιέλθειυγρόδιαμέσουτηςβαλβίδαςκαθώςη όψητηςσφραγίδαςτηςβαλβίδαςακουμπάειενάντιαστηέδρατηςβαλβίδας, ωςαποτέλεσματουσταθερούφορτίουελευθέραςκαταστάσεωςπουδημιουργείταιδιατηςεκτάσεωςτηςπροεξοχήςτηςβαλβίδαςεπάνωαπότηνελαφρώςμακρύτερηδιάμεσοοπή. Ότανμίαδύναμη (246) ασκείταιστηνεσωτερικήεπιφάνεια (240) τηςπροεξοχήςτηςβαλβίδας (210) ηόψητηςσφραγίδαςτηςβαλβίδας (215) μετατοπίζεταιαπότηνέδρατηςβαλβίδας (220) επιτρέπονταςυγρόμεταξύτηςόψηςτηςσφραγίδαςτηςβαλβίδαςκαιτηςέδραςτηςβαλβίδαςναδιέλθειμεταξύτηςπροεξοχήςτηςβαλβίδαςκαιτηςεσωτερικήςεπιφάνειαςτηςδιαμέσουοπής.

公开(公告)号：CA2604316C

公开(公告)日：2013-11-12

申请号：CA2604316

申请日：2007-09-26

Applicant: ALCON INC

Inventor： WILLIAMS DAVID LLOYD

IPC: F16K1/00 ,  A61F9/007 ,  F16K1/36 ,  F16K1/38

Abstract: 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 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 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：ES2342434T3

公开(公告)日：2010-07-06

申请号：ES07123297

申请日：2007-12-14

Applicant: ALCON INC

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

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

Abstract: Procedimiento para determinar un nivel de fluido dentro de una cámara (302), comprendiendo el procedimiento: colocar (402) una fuente de luz puntual (202) en un foco de un reflector parabólico (204); iluminar (404) el reflector parabólico con la fuente de luz puntual; reflejar (406) luz (208) desde el reflector parabólico para producir una cortina de luz paralela (210) paralela a un eje de simetría del reflector parabólico; iluminar horizontalmente (408) la cámara (302) que contiene un fluido (304) con la cortina de luz paralela que tiene rayos de luz paralelos (214); y determinar (410) un nivel de fluido dentro de la cámara con una agrupación lineal de sensores (308) dispuestas para detectar la cortina de luz paralela con el fin de indicar la altura a la cual la agrupación detectó un cambio sustancial en la intensidad de luz recibida.