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| Number | Title | Issue Date |
| 4930512 | Hand held spring-loaded ultrasonic probe An apparatus is disclosed for uniformly biasing a transducer against a human eye comprising an outer housing, an inner housing insertable into the outer housing and a biasing means. The inner housing has attached thereto a transducer and is movable with r... | 06/05/1990 |
| 4907595 | Apparatus for simultaneous determination of ophthalmic artery blood pressure and flow The apparatus comprises a chamber (1) enclosed on all sides except for an opening (3) on one side to permit hermetical contact with the orbital borders. The chamber is equipped with a device (4) for increasing the pressure within the chamber, coupled to a... | 03/13/1990 |
| 4823801 | Cornea thickness measuring ultrasonic probe A cornea thickness measuring ultrasonic probe is provided with an ultrasonic wave propagation layer being in contact with an eye to be examined and formed substantially concentrically with the center of curvature of the cornea of the eye to be examined, a... | 04/25/1989 |
| 4817432 | Digital ultrasonic instrument for ophthalmic use Disclosed is a digital ultrasonic instrument for measuring the corneal thickness (often referred to as a pachymeter) and for measuring the axial length of the eye (often referred to as a biometric ruler). A number representing corneal thickness or axial l... | 04/04/1989 |
| 4598714 | Apparatus for measuring the thickness of corneas An apparatus is disclosed for measuring the thickness of the corneas. Corneal thickness is measured by first directing ultrasonic pulses towards the cornea and timing the interval between reflected pulses. The apparatus also includes a pulse stretcher for... | 07/08/1986 |
| 4576176 | Transducer for measurement of corneal thickness Apparatus for measuring corneal thickness. A transducer is provided that transducer includes a plurality of piezo-electric arcuate segments arranged in a circle to form an annular member. The segments are electrically and acoustically isolated from each o... | 03/18/1986 |
| 4564018 | Ultrasonic system for obtaining ocular measurements An ultrasonic diagnostic scanner for obtaining ocular measurements is described. The ultrasonic diagnostic scanner generally comprises transmitter means for generating an ultrasonic signal, receiver means for receiving echo signals and for producing a pea... | 01/14/1986 |
| 4561446 | Ultrasonic probe which can be introduced into a body An exemplary embodiment includes a probe tube at which an ultrasonic array is disposed. The aim of the disclosure is to construct an ultrasonic probe which, given an optimally small overall diameter, can particularly be employed for bladder endoscopy of m... | 12/31/1985 |
| 4546773 | Apparatus to measure conical thickness An apparatus is disclosed for measuring the thickness of the cornea and for regulating the depth of a surgical blade in relation to the local corneal thickness. Corneal thickness is measured by first directing ultrasonic pulses towards the cornea and timi... | 10/15/1985 |
| 4508121 | Apparatus for measurement of corneal thickness Apparatus for measuring corneal thickness. A transducer is provided that transducer includes a plurality of peizo-electric arcuate segments arranged in a circle to form an annular member. The segments are electrically and acoustically isolated from each o... | 04/02/1985 |
| 4484569 | Ultrasonic diagnostic and therapeutic transducer assembly and method for using An ultrasonic transducer assembly is provided with transducers for both therapeutic and diagnostic ultrasonic radiation. A moveable seal permits adjustment and alignment of the two transducer units in a fluid medium. In addition, there is provided a light... | 11/27/1984 |
| 4261367 | Apparatus for measuring the axial length of an eye An apparatus for measuring the axial length of the eye is disclosed. The apparatus comprises circuitry for transmitting repetition ultrasonic pulses along the ocular axis of the eye and for receiving echo pulses reflected from the retina of the eye. The r... | 04/14/1981 |
| 4154114 | Biometric measuring device A biometric measuring device measures distances between selected elements in a human body, and in particular, the human eye. Trace means produces respective signals for a preselected number of cycles wherein each signal represents the distance between the... | 05/15/1979 |
