Granted Patent B2

US 12,727,973 · App. 18/851,466 · Granted Sep 8, 2026

Inventors: Eren Ahmet Keles (Istanbul, TR); Ahmet Ozlem Keles (Istanbul, TR)

Assignee: AEGIS STAR DENTAL TECHNOLOGIES INC.

A61C7/10

Abstract

Claims (30)

1 . A palatal and jaw expansion device comprising:

at least one screw;

at least two blocks, including a first end block and a second end block, that are positioned respectively on a first end and a second end of the screw to move on the at least one screw;

at least one stabilization rod on which the at least two blocks are also seated;

a movement mechanism disposed at the center of the screw;

an arm that has a fixed end fixed to the movement mechanism perpendicularly to a horizontal axis where the at least one screw extends, when force is applied on a free end, of the arm, it rotates the movement mechanism on which the arm is fixed and the screw around the horizontal axis where the screw extends, enabling the at least two blocks to move on the screw;

a first gearwheel that is disposed on the movement mechanism, whereon teeth in various profiles are bored, whereto the arm is fixed and that rotates on the screw around the horizontal axis by the movement of the arm; and

a second gearwheel that is fixed on the screw, between the first gearwheel and the second end block, that completely contacts the first gearwheel to shift to an active position by the movement of the first gearwheel, and whereon teeth in matching form with the teeth on the first gearwheel are provided;

a first set and a second set that are disposed on the screw and that respectively limit the first and second gearwheels from both sides;

a channel which is provided between the second set and the second gearwheel;

two protrusions which are oppositely provided on the stabilization rod, which extend towards the movement mechanism and the screw, with one thereof being fitted into the channel and the other remaining between the second set and the second end block and

a first stopper which is provided on both ends of the stabilization rod and that prevents the palatal jaw expansion device from disassembling.

2 . The palatal and jaw expansion device as in claim 1 , further comprising a gradation which is provided on each block and whereon the protrusions on the stabilization rod and the first set are seated in the closed position.

3 . The palatal and jaw expansion device as in claim 2 , wherein the gradation of the depth is at least equal to the thickness of the protrusion and the first set.

4 . The palatal and jaw expansion device as in claim 1 , wherein the teeth of the first and second gearwheels are sawtooth-shaped teeth.

5 . The palatal and jaw expansion device as in claim 1 , wherein the first and second gearwheels operate in a unidirectional manner.

6 . The palatal and jaw expansion device as in claim 1 , further comprising screw threads bored on the screw which is divided into two sections by the movement mechanism in a direction on one side of the movement mechanism and in a reverse direction on the other side.

7 . The palatal and jaw expansion device as in claim 1 , further comprising at least one pushing member that is disposed between the first gearwheel and the first set.

8 . The palatal and jaw expansion device as in claim 1 , further comprising a spring used as the pushing member.

9 . The palatal and jaw expansion device as in claim 1 , further a comprising:

a first hole on the first end block, wherein the stabilization rod enters and a second hole wherein the screw enters and which has grooves on the inner surface thereof in a matching form with screw threads of the screw; and

a step which is provided in the first hole, which narrows down the diameter of the first hole and against which the first stopper bears when the at least two blocks reach the maximum opening level.

10 . The palatal and jaw expansion device as in claim 1 , further comprising a second stopper which is provided on the second hole surface next to the second set and the first set.

11 . The palatal and jaw expansion device as in claim 10 , wherein the second stopper which has a diameter larger than a diameter of the second hole, but does not have grooves thereon.

12 . The palatal and jaw expansion device as in claim 1 , wherein the first set has a stepped form, the first set comprising:

a headpiece, and

a cylindrical pipe which extends perpendicular to said headpiece and coaxially with the screw and which surrounds the screw.

13 . The palatal and jaw expansion device as in claim 12 , further comprising a housing on the first gearwheel surface facing the first set, wherein while one end of a pushing member bears against the headpiece thereof, another end thereof is fitted into the housing and surrounds the pipe thereof.

14 . The palatal and jaw expansion device as in claim 1 , further comprising a claw that is disposed on the movement mechanism, that prevents rotation of the arm around the screw freely, that enables the arm to stay in the horizontal position inside the mouth, and that serves as a stopper.

15 . The palatal and jaw expansion device as in claim 10 , further comprising a third stopper which is provided on the first gearwheel at an approximately 90-degree angle with the arm.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (21)