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US 10,743,965 B2Granted
Palatal expansion appliance
AssigneeSung Chul Moon
InventorSung Chul Moon
Life of this patent
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Abstract
A palatal expansion appliance includes one pair of bone screw joints arranged to face each other, each of the one pair of bone screw joints extending in one direction and having a plurality of bone screw holes formed thereon, and a driving portion arranged between the one pair of bone screw joints, in which, as at least a part of the driving portion is moved in one direction, the one pair of bone screw joints are moved in another direction.
Claims24
A palatal expansion appliance comprising:
- a pair of bone screw joints comprising a first bone screw joint and a second bone screw joint arranged to face each other and, each of the first and the second bone screw joints having at least three bone screw holes formed thereon and extending in a direction parallel to a median palatine suture (MPS) such that the palatal expansion appliance is arranged in parallel to the MPS;
- and
- a driving portion arranged between the first and the second bone screw joints,
- wherein, as at least a part of the driving portion is moved in one direction, the first and the second bone screw joints are moved in another direction;
- wherein the width of the appliance is designed to fix the palatal expansion appliance on bones within 3 mm offsets to the left and right from a center line of the median palatine suture (MPS), and the width of the appliance corresponds to a distance between one center line of at least three bone screw holes on the first bone screw joint and the other center line of at least three bone screw holes on the second bone screw joint, upon penetration of at least six bone screws through the bone screw holes into the bones;
- wherein the driving portion comprises a screw rod arranged between the first and the second bone screw joints and to be parallel with the first and the second bone screw joints and
- wherein the screw rod includes threads of two types formed thereon and a first part extending to one end thereof and a second part extending to another end thereof which is opposite to the one end,
- a first type of thread formed on the first part of the screw rod and turning toward the one end and
- a second type of thread formed on the second part of the screw rod and turning toward another end such that turning of the second type of thread is an opposite direction to turning of the first type of thread,
- wherein the screw rod comprises a keyhole formation portion located between the first part and the second part of the screw rod.
7 more elements
A palatal expansion appliance comprising:
- one pair of bone screw joints arranged to face each other, each of the one pair of bone screw joints extending in one direction and having at least three bone screw holes formed thereon;
- and
- a driving portion arranged between the one pair of bone screw joints,
- wherein, as at least a part of the driving portion is moved in one direction, the one pair of bone screw joints are moved in another direction,
- wherein the width of the appliance is designed to fix the palatal expansion appliance on bones within 3 mm offsets to the left and right from the median palatine suture (MPS),
- wherein the driving portion comprises a guide rod arranged between the one pair of bone screw joints to be parallel with the one pair of bone screw joints;
- one pair of link joints respectively coupled to one end portion and another end portion of the guide rod;
- a motor coupled to the guide rod and comprising a motor drive shaft;
- a rotating wheel coupled to the motor drive shaft;
- one pair of wires, each of the one pair of wires having one end portion coupled to a corresponding one of the one pair of link joints and another end portion movably coupled to the rotating wheel;
- and
- at least one pair of links, each of the at least one pair of links having one end portion pivotably coupled to a corresponding one of the one pair of the link joints and another end portion pivotably coupled to a corresponding one of the one pair of bone screw joints.
9 more elements
A palatal expansion appliance comprising:
- one pair of bone screw joints arranged to face each other, each of the one pair of bone screw joints extending in one direction and having at least three bone screw holes formed thereon;
- and
- a driving portion arranged between the one pair of bone screw joints,
- wherein, as at least a part of the driving portion is moved in one direction, the one pair of bone screw joints are moved in another direction,
- wherein the width of the appliance is designed to fix the palatal expansion appliance on bones within 3 mm offsets to the left and right from the median palatine suture (MPS),
- wherein the driving portion comprises a motor arranged between the one pair of bone screw joints and comprising a motor drive shaft;
- a rotating gear coupled to the motor drive shaft;
- one pair of linear motion units arranged between the one pair of bone screw joints to be parallel with the one pair of bone screw joints, having gear teeth formed at one side in opposite directions, and gear-coupled to the rotating gear;
- and
- at least one pair of links, each of the one pair of links having one end portion pivotably coupled to each of the one pair of linear motion units and another end portion pivotably coupled to a corresponding one of the one pair of bone screw joints.
7 more elements
Dependencies are inferred from the claim text.