US3596357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for performing orthodontic ligation of the bands and the archwire applied to a series of teeth, and an orthodontic ligation brace and a preshaped ligation wire piece for use in said method
Assignee: Individual
•
Filing: 1969-03-03
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Granted: 1971-08-03
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Expires: 1989-03-03
Abstract
Abstract Orthodontic ligating operation is conducted with a greatly increased efficiency and economy by the use of a preshaped ligation wire piece having a forward loop section, an adjacent intermediate widened section and a rodlike twisted end portion extending from said intermediate section, and by having said end portion held firmly between the grasping arms of a chuck means contained in a pencillike orthodontic ligation brace and adapted to be closed by a chuck closing and opening means provided in said brace, then hooking the brackets of the selected band and an archwire which have been already applied to a tooth, thereafter twisting up the wire piece by turning said brace until said brackets and archwire are firmly fixed together by said loop, and then opening said arms of the chuck to release the end portion of the fixed wire piece therefrom.
Inventors
- 👤 Takeshi Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:40
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/02; A61C7/026
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
258 words
Apparatus for performing an orthodontic ligation operation with a preformed wire piece comprising, in combination, a tubular, hollow, cylindrical member having a tapered end portion, a narrow opening through said tapered end portion, a chuck element having bifurcated arms disposed within said member, said bifurcated arms having at their ends wire grasping sections movable between open and closed positions and located adjacent said opening, said chuck element being movable longitudinally in said member between a retracted, first position and a second position with respect to said opening, said chuck element having at its end, remote from said opening, support means for cooperation with the interior wall of said opening, said cylindrical member having spring means engaging said support means of said chuck element for constantly urging said chuck element into said first position wherein said wiregrasping sections will be retracted from said opening and will be in said open position, said cylindrical member having movable latch means engaging said support means of said chuck element whereby movement of said latch means will effect movement of said chuck element from said retracted first position to said second position to effect closing of said wire-grasping sections; and said wire piece having a loop-shaped portion and a rodlike twisted end portion extending from said loop portion, said twisted end portion having a longitudinal dimension such that, upon insertion of said twisted end portion into said opening of said cylindrical member, said wire grasping sections will firmly grasp said twisted end portion when said chuck element is moved to said second position.
Claim 2
Dependent Claim
258 words
Apparatus for performing an orthodontic ligation operation with a preformed wire piece comprising, in combination, a tubular, hollow, cylindrical member having a tapered end portion, a narrow opening through said tapered end portion, a chuck element having bifurcated arms disposed within said member, said bifurcated arms having at their ends wire grasping sections movable between open and closed positions and located adjacent said opening, said chuck element being movable longitudinally in said member between a retracted, first position and a second position with respect to said opening, said chuck element having at its end, remote from said opening, support means for cooperation with the interior wall of said opening, said cylindrical member having spring means engaging said support means of said chuck element for constantly urging said chuck element into said first position wherein said wiregrasping sections will be retracted from said opening and will be in said open position, said cylindrical member having movable latch means engaging said support means of said chuck element whereby movement of said latch means will effect movement of said chuck element from said retracted first position to said second position to effect closing of said wire-grasping sections; and said wire piece having a loop-shaped portion and a rodlike twisted end portion extending from said loop portion, said twisted end portion having a longitudinal dimension such that, upon insertion of said twisted end portion into said opening of said cylindrical member, said wire grasping sections will firmly grasp said twisted end portion when said chuck element is moved to said second position.
Claim 3
Dependent Claim
23 words
The apparatus as claimed in claim 1 wherein said cylindrical member is provided with releasable detent means for engaging said movable latch means.
Claim 4
Dependent Claim
76 words
The apparatus as claimed in claim 2 wheRein said latch means comprises a lever pivotally mounted on said member for movement between a first and second position corresponding to said first and second positions of said chuck element, said lever having a tapered end face for engaging said support means of said chuck element and said cylindrical member is provided with a slot through which said lever protrudes when said lever is in said first position.
Claim 5
Dependent Claim
68 words
The apparatus as claimed in claim 3 wherein said cylindrical member is provided with a releasable detent member and said lever is provided at its end remote from said pivot mount with stepped recesses for engaging said detent member, said detent member engaging one of said stepped recesses when said lever is in said second position whereby said lever is releasably retained in one of said two positions.
Claim 6
Dependent Claim
65 words
The apparatus as claim 4 wherein said cylindrical member carries spring means for constantly urging said detent member into engagement with one or the other of said stepped recesses of said lever and manually engageable means are provided on the exterior of said cylindrical member for disengaging said detent member from said other of said stepped recesses when said lever is in said second position.
Claim 7
Dependent Claim
117 words
The apparatus as claimed in claim 1 wherein said bifurcated arms of said chuck element are formed from resilient material and formed at their ends with exterior tapered surfaces adjacent said wire-grasping sections, and the interior surface of said cylindrical member adjacent said opening is formed with a tapered conical surface at the apex of which is located said opening, whereby, upon movement of said chuck element from said first retracted position to said second position, said tapered surfaces of said bifurcated arms will engage said tapered conical surface of said cylindrical member to close said wire-grasping sections and when said chuck element moves from said second position to said first position, said wire-grasping sections will open.
Claim 8
Dependent Claim
69 words
An orthodontic ligation wire piece according to claim 1, wherein said wire piece is of the shape consisting of a forward narrow U-shape section, an adjacent intermediate section having two extensions of the loop which are spaced wide enough to surround the bracket section provided on a band applied to a tooth, and a rodlike twisted end portion extending from said intermediate section and having a twisted free end.
References Cited (Backward Citations)
US1187480A
Cited
US2532200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |