Bill T Chen

US Patent:

8308736, Nov 13, 2012

Filed:

Oct 13, 2008

Appl. No.:

12/249996

Inventors:

Mikhail Boukhny - Laguna Niguel CA, US
Bill Chen - Irvine CA, US
James Chon - Irvine CA, US

Assignee:

Alcon Research, Ltd. - Fort Worth TX

International Classification:

A61F 9/00
A61F 2/16

US Classification:

606107, 623 612

Abstract:

An intraocular lens injection device comprises a tubular housing with a plunger longitudinally disposed within the tubular housing. An electric drive system longitudinally translates the plunger so that its tip engages an insertion cartridge to fold and displace an intraocular lens disposed within and to inject the folded lens into the lens capsule of an eye. A control circuit is configured to start translation of the plunger, responsive to user input, to detect at least one fault condition based on a counter-electromotive force produced by the electric motor, and to stop translation of the plunger assembly responsive to the detected fault condition, which may comprise excessive resistance to forward or rearward translation of the plunger or insufficient resistance to forward translation of the plunger.

US Patent:

8308799, Nov 13, 2012

Filed:

Apr 20, 2010

Appl. No.:

12/763322

Inventors:

Bill Chen - Irvine CA, US
James Y. Chon - Irvine CA, US

Assignee:

Alcon Research, Ltd. - Fort Worth TX

International Classification:

A61F 9/007

US Classification:

623 612, 606107

Abstract:

An intraocular lens (IOL) injection device is modularized to enable cleaning of internal components after surgery. The device includes first and second housing modules. These modules collectively define a passageway along which an injector rod moves between a retracted position and an extended position. The first module is further configured to accommodate a lens cartridge module. The cartridge module has disposed therein an IOL, in alignment with the passageway. Thus as the rod moves from the retracted position to the extended position, a front portion of the rod that is substantially surrounded by the first module in the retracted position moves into the cartridge module and displaces the IOL. This causes the front portion of the rod to accumulate on it viscoelastic substances. The first module, though, is configured to detach from the second module, to thereby expose the front portion of the rod in the retracted position for cleaning.

US Patent:

20110172676, Jul 14, 2011

Filed:

Mar 22, 2011

Appl. No.:

13/069179

Inventors:

Bill Chen - Irvine CA, US

International Classification:

A61F 9/007
B25B 13/48
B23P 17/04

US Classification:

606107, 81436, 29428

Abstract:

The present disclosure is directed to devices, systems, and methods directed to mounting a plunger tip to a plunger of an IOL injection device. A plunger tip wrench that is operable to releasably retain a plunger tip may be coupled to a holder extending from an end of the IOL injection device to align the plunger tip with the plunger of the IOL injection device. In some instances, the IOL injection device may include a motor and use a back electromotive force (EMF) of the motor to detect a position of the plunger as it is extended to engage the plunger tip. The plunger tip may be positioned relative to the plunger such that the plunger will engage the plunger tip within the entire range of a negative error position and a positive error position.

US Patent:

20130197531, Aug 1, 2013

Filed:

Jan 27, 2012

Appl. No.:

13/360099

Inventors:

Mikhail Boukhny - Laguna Niguel CA, US
Bill Chen - Irvine CA, US
James Chon - Irvine CA, US

International Classification:

A61F 9/013

US Classification:

606107

Abstract:

An intraocular lens injection device comprises a tubular housing with a plunger longitudinally disposed within the tubular housing. An electric drive system longitudinally translates the plunger so that its tip engages an insertion cartridge to fold and displace an intraocular lens disposed within and to inject the folded lens into the lens capsule of an eye. A control circuit is configured to start translation of the plunger, responsive to user input, to detect at least one fault condition based on a counter-electromotive force produced by the electric motor, and to stop translation of the plunger assembly responsive to the detected fault condition, which may comprise excessive resistance to forward or rearward translation of the plunger or insufficient resistance to forward translation of the plunger.

US Patent:

20130197532, Aug 1, 2013

Filed:

Jan 27, 2012

Appl. No.:

13/360234

Inventors:

Mikhail Boukhny - Laguna Niguel CA, US
Bill Chen - Irvine CA, US
James Chon - Irvine CA, US

International Classification:

A61F 9/013

US Classification:

606107

Abstract:

An intraocular lens injection device comprises a tubular housing with a plunger longitudinally disposed within the tubular housing. An electric drive system longitudinally translates the plunger so that its tip engages an insertion cartridge to fold and displace an intraocular lens disposed within and to inject the folded lens into the lens capsule of an eye. A control circuit is configured to start translation of the plunger, responsive to user input, to detect at least one fault condition based on a counter-electromotive force produced by the electric motor, and to stop translation of the plunger assembly responsive to the detected fault condition, which may comprise excessive resistance to forward or rearward translation of the plunger or insufficient resistance to forward translation of the plunger.

US Patent:

20140200590, Jul 17, 2014

Filed:

Mar 18, 2014

Appl. No.:

14/218159

Inventors:

- Basel, CH
Bill Chen - Irvine CA, US

Assignee:

NOVARTIS AG - Basel

International Classification:

A61F 2/16

US Classification:

606107

Abstract:

The present disclosure is directed to devices, systems, and methods directed to mounting a plunger tip to a plunger of an IOL injection device. A plunger tip wrench that is operable to releasably retain a plunger tip may be coupled to a holder extending from an end of the IOL injection device to align the plunger tip with the plunger of the IOL injection device. In some instances, the IOL injection device may include a motor and use a back electromotive force (EMF) of the motor to detect a position of the plunger as it is extended to engage the plunger tip. The plunger tip may be positioned relative to the plunger such that the plunger will engage the plunger tip within the entire range of a negative error position and a positive error position.