Title:
ORTHODONTIC BRACKETS AND CONVERTIBLE BUCCAL TUBES
Document Type and Number:
WIPO Patent Application WO2002024101
Kind Code:
A3
Abstract:
New orthodontic devices comprise a bracket or convertible buccal tube, both having a body with an arch wire slot (26) therein. Both have a slot closure member (36), also referred to as a jamming shutter, pivotally mounted for movement between slot open and closed positions and consisting of a pivot portion (46) including an arm portion (50) with a mesially-distally extending slot closure portion (48) at its end. The slot closure portion (48) has a part that closes the slot and mesially-distally extending parts that in slot closed position engage an adjacent body surface with an interference jamming fit sufficient to retain the slot closure member (36) in slot closed position. Any movement of the slot closure member (36) to and from the slot closed position involves flexing of these engaged parts away from the device body against the material elasticity, removing the need for latches or retaining springs. The body or the closure member has a recess (54) to receive an opening tool (58) that is rotated to open the slot. A bracket will usually be "active", including an attitude controlling spring (64) having a free end (68) protruding into the slot (26).
Inventors:
HANSON G HERBERT
Application Number:
PCT/CA2001/001301
Publication Date:
October 02, 2003
Filing Date:
September 13, 2001
Export Citation:
Assignee:
AUGUSTA DEV INC (CA)
International Classes:
A61C7/28; (IPC1-7): A61C7/28
Foreign References:
| US4712999A | 1987-12-15 | |||
| US4698017A | 1987-10-06 | |||
| US5863199A | 1999-01-26 |
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