Closed flap spring for orthodontic appliances

• US 4,026,023 A
• Filed: 11/26/1975
• Issued: 05/31/1977
• Est. Priority Date: 11/26/1975
• Status: Expired due to Term

• Current Assignee: Robert Leon Fisher
• Original Assignee: Robert Leon Fisher
• Inventors: Fisher, Robert Leon
• Primary Examiner(s): Peshock, Robert
• Application Number:
  US05/635,153
• Time in Patent Office: 552 Days
• Field of Search: 32/14 E, 32/14 A
• US Class Current: 433/7
• CPC Class Codes: A61C 7/00 Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
• CPC Class Codes: A61C 7/10 Devices having means to apply outwardly directed force, e.g. expanders

Abstract

An improved closed flap spring for orthodontic appliances used in orthodontic treatment of a patient, including a wire fashioned in the shape of a T, having a vertical portion and a horizontal portion, the vertical portion having a pair of spaced tag portions at its lower end for processing or attaching to the orthodontic appliance, a pair of spaced parallel arm portions as extensions of the tag portions forming the upper end of the vertical portion of the T, a pair of rounded loop portions, one of the loop portions extending generally horizontally outward from one of the arm portions in one direction and the other loop portion extending generally horizontally outward from the other arm portion in the opposite direction, and a bridge portion interconnecting the loop portions, the loop portions and bridge portion forming the horizontal portion of the T, which horizontal portion is free to engage and control the directional movement of a tooth.

Claims

1. An improved orthodontic appliance for controlling the directional movement of a tooth or teeth, said appliance having at least one closed flap spring with one end affixed and a free end engaging a tooth or teeth to be moved in which the improvement comprises:

a closed flap spring in the shape of a T, fashioned from a piece of wire, said closed flap spring having a substantially vertical portion and a substantially horizontal portion, the vertical portion having a pair of affixed tag portions at its lower end, a pair of substantially parallel spaced arm portions extending from said tag portions, a pair of rounded loop portions, one of said rounded loop portions extending generally horizontally outward from one of said arm portions in the opposite direction, and a bridge interconnecting said rounded loop portions, and said bridge portion forming said horizontal portion and engaging the tooth or teeth to be moved, such parallel arm portions, said loop portions and said bridge portion applying a controlled movement to said tooth or teeth, said loop portions and said bridge portion cushioning said force applied to said tooth or teeth.

2. The improved orthodontic appliance recited in claim 1, in which the orthodontic appliance includes a removable plate, wherein:

said tag portions are affixed by embedded said tag portions within the removable plate and said arm portions extend outwardly from the removable plate, the length of said tag portions embedded within the removable plate and therefore the length of said vertical portion extending outwardly from the removable plate varying in accordance with the movement to be imparted to the tooth or teeth.

3. The improved orthodontic appliance recited in claim 2, wherein:

the length of said arm portions vary between about 1/16 inch to about 1/4 inch.

4. The improved orthodontic appliance recited in claim 1, wherein:

the length of said horizontal portion of said T-shaped closed flap spring varies between about 1/8 inch to about 3/8 inch.

5. The improved orthodontic appliance recited in claim 1, wherein:

said loops have a radius between about 1/32 inch to about 1/16 inch.

6. The improved orthodontic appliance recited in claim 1, wherein:

a plurality of said closed T-shaped flap springs are attached to the orthodontic appliance for engaging and controlling the directional movement of certain teeth.

7. The improved orthodontic appliance recited in claim 6, wherein:

one of said tag portions and one of said arm portions are axially aligned and the other of said tag portions is axially aligned with the other of said arm portions.

8. An improved orthodontic appliance for controlling the direction of movement of certain teeth of a patient including a removable plate having a plurality of flap springs with one end of each of the flap springs affixed to said removable plate and another end for engaging and controlling the teeth to be directionally moved, the improvement comprising:

closed flap springs in the general shape of a T, fashioned from a piece of wire, each of said closed flap springs having a pair of affixed tag portions, a pair of parallel arm portions extending outwardly from the tag portions, a pair of rounded loop portions, one of said rounded loop portions extending generally horizontally outward from one of said arm portions in one direction and said other rounded loop portion extending generally horizontally outward from the other of said arm portions in the opposite direction, and a bridge portion interconnecting said rounded loop portions, said rounded loop portions and bridge portion of each of said closed flap springs forming free ends to engage and control the directional movement of certain teeth, said parallel arm portions, said loop portions and said bridge portion applying a controlled directional movement force to said teeth, said loop portions and said bridge portion cushioning said force applied to said teeth.

9. An improved closed flap spring for an appliance used in orthodontic treatment, comprising:

a wire fashioned in the shape of a T, said wire having a vertical portion with a pair of spaced tag portions at its lower end for affixing to the appliance, a pair of substantially parallel arm portions as extensions of the tag portions, a pair of rounded loop portions, one of said rounded loop portions extending outward from one of said arm portions in one direction and the other of said rounded loop portions extending outward from the other of said arm portions in the opposite direction, and a bridge portion interconnecting said rounded loop portions, said rounded loop portions and said bridge portion forming a portion extending substantially transverse to the direction of said arm portions and, being free to engage and control the directional movement of a tooth by cushioning and applying to said tooth the combined forces of said arm portions, said loop portions and said bridge portion.

10. The improved flap spring recited in claim 9, wherein:

said tag portions are adapted to be attached to the appliance with the arm portions extending outwardly from said appliance, the length of the said arm portions varying in accordance with the movement to be imparted to the tooth.

11. The improved flap spring recited in claim 9, wherein:

the length of the said horizontal portion varies between about 1/8 inch and about 3/8 inch.

12. The improved closed flap spring recited in claim 9, wherein:

the length of said arm portions varies between about 1/16 inch and 1/4 inch, depending upon the termination of the points of attachment to the dental appliance.

13. The improved closed flap spring recited in claim 12, wherein:

said parallel arm portions are spaced apart a distance of between about 1/32 inch to about 1/16 inch.

14. An improved flap spring for an appliance used in orthodontic treatment, comprising:

a wire fashioned in the shape of a T, said wire having a vertical portion with a pair of spaced tag portions at its lower end for affixing to the orthodontic appliance, a pair of parallel arm portions as extensions of the tag portions at the upper end of the vertical portion of the T, said tag portions being adapted to be attached to the orthodontic appliance with the arm portions extending outwardly from the orthodontic appliance, said parallel arm portions being spaced apart a distance of between about 1/32 inch to about 1/16 inch, a pair of rounded loop portions, one of said rounded loop portions extending outward from one of said arm portions in one direction and the other of said rounded loop portions extending outward from the other of said arm portions in the opposite direction, and a bridge portion interconnecting said rounded loop portions, said rounded loop portions and said bridge portion forming a portion extending substantially transverse to the direction of said arm portions, the length of the said transverse portion varying from between about 1/8 inch to about 3/8 inch and being adapted to engage and control the movement of a tooth or teeth.