FRANCIS YTTERGREN FALCK, JR
Pilots at Montauk Ave, Stonington, CT
License number
Connecticut A4915237
Issued Date
Jul 2015
Expiration Date
Jul 2016
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
91 Montauk Ave, Stonington, CT 06378
Professional information
Method Of Operating Tonometer
US Patent:
6471647, Oct 29, 2002
Filed:
Jan 8, 2001
Appl. No.:
09/756316
Inventors:
Francis Y. Falck - Stonington CT
Robert W. Falck - Pawcatuck CT
Robert W. Falck - Pawcatuck CT
Assignee:
FFHK Development Company, LLC - Mystic CT
International Classification:
A61B 316
US Classification:
600398, 600399, 600400, 600405, 600406, 128898
Abstract:
An applanation tonometer with a replaceable prism for contacting a cornea has emitter and detector ports arranged opposite each other on opposite sides of a longitudinal axis, with the ports aimed at about 45° to the longitudinal axis. Light from an emitter then passes through the emitter port and crosses the prism axis to be incident and reflected from an emitter-reflecting surface of the prism and become incident on the applanation surface. Light reflected from the applanation surface is incident on and reflected from a detector-reflecting surface opposite and parallel with the emitter-reflecting surface to proceed across the prism axis to the detector port. Such an arrangement produces reliable applanation signals and varies the spacial intensity of light reflected from the applanation surface so that the tonometer can automatically distinguish between concentric and eccentric contact of the applanation surface with a cornea.
Method And Apparatus For Determining Intra Ocular Pressure Of An Eye
US Patent:
2007017, Jul 26, 2007
Filed:
Apr 5, 2007
Appl. No.:
11/697006
Inventors:
Francis Falck - Stonington CT, US
Robert Falck - Pawcatuck CT, US
Robert Falck - Pawcatuck CT, US
Assignee:
FALCK MEDICAL, INC. - Mystic CT
International Classification:
A61B 3/16
US Classification:
600405000
Abstract:
A tonometer, which uses an applanation prism that reflects light inversely related to an applanated area of the cornea, determines intraocular pressure (IOP) by making initial contact with the cornea, and then pressing the prism against the eye through a predetermined departure range from the initial contact value. The departure can add a predetermined prism pressing force beyond the initial contact value or can increase prism pressing force sufficiently to produce a predetermined increase in the applanated area. From the change in applanated area and prism pressing force required, the microprocessor can be programmed to determine IOP in several ways that do not suffer inaccuracy from variations in tear volume and corneal thickness and curvature in different eyes being examined.
Replaceable Prism System For Applanation Tonometer
US Patent:
6179779, Jan 30, 2001
Filed:
Dec 22, 1997
Appl. No.:
8/995794
Inventors:
Francis Y. Falck - Stonington CT
Robert W. Falck - Pawcatuck CT
Robert W. Falck - Pawcatuck CT
Assignee:
FFHK Development Company LLC - Mystic CT
International Classification:
A61B 316
US Classification:
600398
Abstract:
An applanation tonometer with a replaceable prism for contacting a cornea has emitter and detector ports arranged opposite each other on opposite sides of a longitudinal axis, with the ports aimed at about 45. degree. to the longitudinal axis. Light from an emitter then passes through the emitter port and crosses the prism axis to be incident and reflected from an emitter-reflecting surface of the prism and become incident on the applanation surface. Light reflected from the applanation surface is incident on and reflected from a detector-reflecting surface opposite and parallel with the emitter-reflecting surface to proceed across the prism axis to the detector port. Such an arrangement produces reliable applanation signals and varies the spacial intensity of light reflected from the applanation surface so that the tonometer can automatically distinguish between concentric and eccentric contact of the applanation surface with a cornea.
Replaceable Prism For Applanation Tonometer
US Patent:
2001005, Dec 13, 2001
Filed:
Mar 19, 2001
Appl. No.:
09/811709
Inventors:
Francis Falck - Stonington CT, US
Robert Falck - Pawcatuck CT, US
Robert Falck - Pawcatuck CT, US
International Classification:
A61B003/16, G02B005/04
US Classification:
600/398000, 359/831000
Abstract:
An applanation tonometer with a replaceable prism for contacting a cornea has emitter and detector ports arranged opposite each other on opposite sides of a longitudinal axis, with the ports aimed at about 45° to the longitudinal axis. Light from an emitter confronting one of the ports is incident on the applanation surface at about 45° so that light reflecting internally of the prism from the applanation surface is directed toward the opposite port for detection. The portion of the light internally reflected from the applanation surface provides a signal indicating the size of the applanated area, from which intraocular pressure is determined.
Method And Apparatus For Examining An Eye
US Patent:
2003023, Dec 25, 2003
Filed:
Jun 25, 2002
Appl. No.:
10/178987
Inventors:
Francis Falck - Stonington CT, US
Robert Falck - Pawcatuck CT, US
Robert Falck - Pawcatuck CT, US
International Classification:
A61B013/00
US Classification:
600/558000
Abstract:
An applanation tonometer and its operation involve an actuator pressing a prism with a variable and determinable force against a cornea of an eye while a source directs light to reflect from an applanation surface of the prism to a detector producing a detected light signal received by a microprocessor. Such a tonometer produces a diastolic phase signal and a systolic phase signal representing the complete intra ocular pressure experience of the eye being examined. The signal information allows combined diastolic and systolic IOP to be determined in several corroborating ways and also yields measures of ocular blood flow and tonography.
Ophthalmologic Applanation Prism Replacement System
US Patent:
2004015, Aug 5, 2004
Filed:
Jun 3, 2003
Appl. No.:
10/453253
Inventors:
Francis Falck - Stonington CT, US
Robert Falck - Pawcatuck CT, US
Robert Falck - Pawcatuck CT, US
International Classification:
A61B003/16
US Classification:
600/406000
Abstract:
A replaceable applanation prism for an eye examining instrument is made to be discarded after each use. A bendable tab molded on the prism is deformed by a strain gauge as the prism is inserted into a prism holder, and a signal from the strain gauge is used to verify that a previously unused prism has been inserted into the holder. A microprocessor is programmed to recognize the signal produced by initial deformation of the prism tab so as to proceed with an eye examination only after receiving the strain gauge signal verifying that a previously unused prism has been inserted.
Ophthalmologic Applanation Prism Replacement System For Eye Examining Instrument
US Patent:
2006021, Sep 28, 2006
Filed:
May 30, 2006
Appl. No.:
11/420946
Inventors:
Francis Falck - Stonington CT, US
Robert Falck - Pawcatuck CT, US
Robert Falck - Pawcatuck CT, US
Assignee:
AUTOTONOMETER CORPORATION - Mystic CT
International Classification:
A61B 3/16
US Classification:
600406000
Abstract:
A replaceable prism for an eye examining instrument is made to be discarded after each use. A bendable tab molded on the prism is deformed by a strain gauge as the prism is inserted into a prism holder, and a signal from the strain gauge is used to verify that a previously unused prism has been inserted into the holder. A microprocessor is programmed to recognize the signal produced by initial deformation of the prism tab so as to proceed with an eye examination only after receiving the strain gauge signal verifying that a previously unused prism has been inserted.
Method And Apparatus For Detecting Possible Arterial Constriction By Examining An Eye
US Patent:
2006023, Oct 19, 2006
Filed:
May 30, 2006
Appl. No.:
11/420971
Inventors:
Francis Falck - Stonington CT, US
Robert Falck - Pawcatuck CT, US
Robert Falck - Pawcatuck CT, US
Assignee:
AUTOTONOMETER CORPORATION - Mystic CT
International Classification:
A61B 5/02, A61B 3/16
US Classification:
600504000, 600398000
Abstract:
A tonometer capable of measuring systolic or ocular pulse pressure (OPP) can be used to examine eyes of a patient to measure whether OPP or ocular blood flow (OBF) is sub-normal to one or both eyes. This can serve as an indication of a possible constriction of blood flow in arteries leading not only to the eyes, but to the brain and other regions above the neck. Any such sub-normal measure can then indicate that further investigation of blood flow in carotid and other arteries is appropriate.