Lip and cheek expander and tongue retractor with tortionally adj

Details Lip and cheek expander and tongue retractor with tortionally adj Lip and cheek expander and tongue retractor with tortionally adj

1976-04-26

1977-01-11

Michell, Robert W.

Surgery

Truss

Perineal

128 15, A61B 132

Patent

active

040021629

ABSTRACT:
The present invention provides for a lip and cheek expander and tongue retractor for mechanically holding open a patient's mouth and stabilizing his tongue therein so as to facilitate dental and medical procedures. The present expander-retractor comprises first and second arc-shaped shells, each of said shells having a trough-shaped cross-section including first and second side walls; and a spring element having two ends, one of each of said ends secured to the first and second shells respectively, said element disposed in a plane which is substantially transverse to those planes defined by said side walls and which, upon insertion is substantially co-planer with the plane of the patient's tongue. The spring element includes a lingual arch which is adapted for engagement with the paient's tongue. Further, the spring element exhibits a resilient torque which is directed radially outward with respect to the radius of curvature of the arc-shaped shells, whereby the lips of the patient are engaged within said troughs and the tongue of the patient is engaged by the lingual arch of the spring element, thereby significantly assisting the dentist or physician with respect to visual and physical access to the dental area and aiding him in maintaining a clean, dry field of operation.

REFERENCES:
patent: 903344 (1968-11-01), Wackler
patent: 1389436 (1921-08-01), Cameron
patent: 3241550 (1966-03-01), Galarie

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