Reciprocating dental prophylactic angular device

Details Reciprocating dental prophylactic angular device Reciprocating dental prophylactic angular device

A - Human Necessities

61

C

83/14

A61C 3/00 (2006.01) A61C 17/00 (2006.01)

Patent

CA 1253016

RECIPROCATING DENTAL PROPHYLACTIC ANGULAR DEVICE ABSTRACT OF THE DISCLOSURE A dental prophylactic device which has a handle section containing a drive member and a driven section at a substantial angle to the handle section containing a driven member also at an angle to the driving member. The handle section includes a longitudinally oscillatable cam follower supported parallel to the handle axis. When the cam follow- er is translated around the axis by the rotation of the drive shaft, it is caused to oscillate by one end contacting the stationary cam follower track. The other end engages a slot parallel to the axis of a cam at an angle to the cam follower thereby causing the cam to oscillate back and forth over an arc of at least 50° to approximately 150°, main- taining the connection between the cam follower and the cam by the use of the slot which permits the cam follower, in effect, to move up and down with respect to the cam as it oscillates. The cam oscillates a cup which may contain prophylactic material and the reversing action limits the ability of the material to be thrown out of the cup and obviates unintended movement of the cup over the surface of a tooth which occurs in the case of rotation in a single direction. A special sealing ring and its compartment, remotely located from the head of the spindle, provides an excellent seal.

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