X-ray or gamma ray systems or devices – Electronic circuit – With display or signaling
Utility Patent
1998-09-30
2001-01-02
Porta, David P. (Department: 2876)
X-ray or gamma ray systems or devices
Electronic circuit
With display or signaling
C378S189000
Utility Patent
active
06169781
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention is directed to a sensor of the type that can be placed intraorally in the mouth of a patient for the production of tooth/jaw exposures of the patient, and in particular to a sensor of this type having a narrow, generally rectangular housing for an image detector, and a control circuit board to which various lines of a connection cable are connected, whose free end can be connected with an image processing unit.
2. Description of the Prior Art
Intraoral sensors of the above type are known for example from the publications entitled “VISUALIX the new way to take dental X-rays,” of the company Philips Medical Systems, and “SENS-A-RAY a revolution in dental radiography,” of the company Regam Medical Systems AB, as well as from DE-GM 93 19 391. In the known embodiments, the connection cable required for controlling the image detector exits either at the frontal side of the narrower side wall of the housing, or at a right angle; or at an acute angle thereto, at the rear wall of the housing.
Larger sensors, exceeding the currently standard size of approx. 22.3×27.3 mm, are, apart from the cable routing, particularly problematic with respect to the positioning of the sensor in the oral cavity of the patient, especially if the production of exposures in the front tooth region or in the rear molar region is desired.
SUMMARY OF THE INVENTION
An object of the present invention is to provide an improved sensor of this type by providing a sensor that permits better placement of the sensor in the mouth of the patient, in particular for the exposures mentioned above.
According to the invention, at least one side of the sensor has a shape adapted to the curve of the palate, and thus has no disturbing edges, even with beveling of the sensor edges, which may be perceived as unpleasant by the patient. The shape can be circular, elliptical, or paraboloid. The cable exit of the connecting cable runs, in a known manner, obliquely to the longitudinal plane of the housing, or to the sensor plane, so that an optimal positioning of the sensor is achieved for almost all dental exposures. The sensor can be provided at least on one narrow side, such as the back side of the housing, with a smoothing that permits better adaptation of the sensor in molar exposures. The smoothing can be fashioned as a circular arc with a relatively large radius. The front side of the sensor can advantageously be constructed so that the active surface of the image detector is made outwardly visible and/or able to be felt by means of design elements.
REFERENCES:
patent: D. 361619 (1995-08-01), Phleps et al.
patent: D. 409307 (1999-05-01), Phleps et al.
patent: 1748490 (1930-02-01), Martin
patent: 2104715 (1938-01-01), Saffir
patent: 3851178 (1974-11-01), Borden
patent: 5510623 (1996-04-01), Sayag et al
patent: 93 19 391 (1994-07-01), None
Brochure for VISUALIX Digital Video Radiographic System, Philips Medical Systems No date.
Brochure for SENS-A-Ray Dental X-ray Imaging System, Regam Medical Systems AB No date.
Doebert Michael
Phleps Tilman
Zeller Uwe
Porta David P.
Schiff & Hardin & Waite
Sirona Dental Systems GmbH & Co. KG
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