摘要:
According to an embodiment, a device for tightening an article includes a housing, a spool rotatably positioned within the housing, a knob operably coupled with the spool to cause the spool to rotate within the housing, and a stop mechanism. The device is configured so that incremental rotation of the knob in a first direction causes a corresponding incremental rotation of the spool within the housing that incrementally tensions a tension member and thereby tightens the article. The device is also configured so that incremental rotation of the knob in a second direction causes a corresponding incremental rotation of the spool that incrementally loosens the tension member's tension. The stop mechanism is configured to prevent rotation of the spool in the second direction when the tension member's tension achieves or falls below a tension threshold.
摘要:
The invention provides an automatic ligation tool which comfortably and quickly fastens ligature wires to brackets. There is provided an automatic ligation tool for orthodontists for fastening ligature wires to a bracket, that includes a tube with a first end portion having a side provided with first and second openings, a second end portion having an outer surface and an external screw thread on the outer surface, and an inner surface provided with a protuberance; a body including an inner surface provided with an internal screw thread associated with the external thread of the tube, guide grooves formed along the longitudinal direction on the inner surface of the body and a circumscribed groove formed between the internal screw thread and the guide grooves on the inner surface of the body; a rotation shaft inserted into the tube and the body, the shaft having first and second end parts, the first end part formed as a hook which extends out of the first opening, the first end part having an end extending into the second opening, the shaft having guide pins fitting in and sliding along the guide grooves; an elastic device positioned between the protuberance and the guide pins for providing a return force for the shaft; and a driving mechanism connected with the second and part of the shaft for rotating the shaft to fasten the ligature wire gripped by the hook to the bracket.
摘要:
An apparatus for correcting misalignments in human teeth comprises a rod-like member which has a grip holder for fixing a ligature wire to a brace and to brackets applied to teeth. The grip holder is connected to a rod-like tubular torsion bar arranged in the interior of a hand tube and an end tube. On the outer circumference of the torsion bar are formed threads, which cooperate via a ball cage with the threads formed on the hand tube. A rotary movement is imparted to the torsion bar and thereby the grip holder by an axial movement of the hand tube or the end tube. As a result of this rotary movement, the ends of a ligature wire inserted in the grip holder are twisted for fixing a brace guided in the bracket, and consequently the brace is fixed to the bracket for transferring the force of the brace to the teeth. Therefore fixing is sped up and simplified as compared with other fixing methods.
摘要:
Hand held low friction ligation orthodontic instrument including a handle (12) on one end and an elongated shaft (8) extending longitudinally on the other end. The shaft comprises a copper nickel titanium metal alloy with modified memory characteristics, capable of great elasticity and flexibility. The shaft ligated simultaneously with an orthodontic wire into the bracket slot using a wire ligature provides after its pull a low friction wire ligature (11).
摘要:
According to an embodiment, a device for tightening an article includes a housing, a spool rotatably positioned within the housing, a knob operably coupled with the spool to cause the spool to rotate within the housing, and a stop mechanism. The device is configured so that incremental rotation of the knob in a first direction causes a corresponding incremental rotation of the spool within the housing that incrementally tensions a tension member and thereby tightens the article. The device is also configured so that incremental rotation of the knob in a second direction causes a corresponding incremental rotation of the spool that incrementally loosens the tension member's tension. The stop mechanism is configured to prevent rotation of the spool in the second direction when the tension member's tension achieves or falls below a tension threshold.
摘要:
An accessory allows for straight archwires to be converted to looped archwires. The accessory has an archwire receiving channel which is defined between a first elongated coupling member and a second elongated coupling member. The archwire receiving channel is used for crimping the accessory to an existing archwire. An elastically deformable bridge, connected between the first elongated coupling member and the second elongated coupling member, imparts retraction or protraction once activated. The elastically deformable bridge is formed from one or more segments. Curved segments and linear segments are possible, which can be combined to form various shapes, for example omega loops and mushroom shapes. The first coupling member and the second coupling member have an angled lower portion and upper portion to facilitate engagement with existing archwires. Anchoring notches can also be used in conjunction with elastic bands for enhanced orthodontic corrections.
摘要:
An orthodontic appliance designed specifically for use by a dentist or dental assistant in placing the cut ends of a ligature wire under the arch wire employed in the formation of a tooth corrective arrangement commonly known as "braces". The appliance comprises a finger mounted tool formed of metal plastic or any other suitable material and is adapted to be fitted over a finger or thumb of the user and is provided with a notched-out area and serrations to assist in guiding the wire ends under the arch wire.
摘要:
The present disclosure relates to an apparatus for processing wire which prevents the z-axis bending of the wire, and more particularly, to an apparatus for processing wire which is capable of further maximizing the effect of preventing the z-axis bending of the wire by minimizing wire exposure out of the apparatus.
摘要:
A single pair of pliers for bending orthodontic arch wires in all quadrants of a patient's mouth. Includes first and second actuating members, each including a handle portion for grasping in the hand, and a head portion that projects at an angle. The actuating members are pivotally joined so that the head portions can be moved toward and away from each other into respective closed and open positions. A first occlusal jaw on head portion of the first actuating member has an internally angled channel profile and a second occlusal jaw on the head portion of the second actuating member also has an internally angled channel profile facing the other internal channel. A gingival jaw member having upper and lower externally angled corners is adapted to mate with the internally angled profiles of the upper and lower occlusal jaws, respectively, when the head portions are in the closed position.
摘要:
The present disclosure provides for a system for securing intraoral objects and related oral structures during a dental procedure, the system includes a predetermined length of wire having a first end portion and a second end portion; and a first sleeve defining a cavity for slidably engaging the first end portion of the wire therein wherein the engagement of the first sleeve to the wire enhances the strength of the wire without reducing the malleability thereof and increases the safety of a dental professional and patient during the dental procedure. The system may further include a second sleeve having a cavity for slidably engaging the second end portion of the wire therein.