Tooth extracting instrument |
|||||||
| 申请号 | US3646679D | 申请日 | 1971-03-10 | 公开(公告)号 | US3646679A | 公开(公告)日 | 1972-03-07 |
| 申请人 | GENE O NAUGLE; BILLIE R HARDING; | 发明人 | NAUGLE GENE O; HARDING BILLIE R; | ||||
| 摘要 | A hand-held instrument suitable for removing a wolf tooth from the upper jaw of a horse includes an elongated shank having a handle mounted on the rear end and provided with an extractor heat at the other forward end. The extractor head is preferably inclined at an angle to the axis of the shank to afford better leverage in prying and has a unique configuration terminating in a forward beveled cutting edge which permits the head to be slid between the wolf tooth and an adjacent tooth to loosen the root and pry the wolf tooth loose by applying a force to the handle outside the mouth of the animal with only two positions for the extractor head relative to the wolf tooth. | ||||||
| 权利要求 | 1. In a tooth extracting instrument including an elongated shank, the improvement comprising an extractor head at the front end of the shank having an open hollow inner face for slidable insertion about a side of the tooth and having a correspondingly shaped outer face, said extractor head terminating in a forward cutting edge whereby the root of the tooth is loosened and the tooth is removed in an upward stroke followed by an outward prying action against the side of the tooth. 2. A tooth extracting instrument as set forth in claim 1 wherein said extractor head is inclined at an angle relative to the longitudinal axis of the shank. 3. A tooth extracting instrument as set forth in claim 2 wherein said angle of inclination is about 15*. 4. A tooth extracting instrument as set forth in claim 1 wherein said shank and head are made from a single piece of hollow circular tubing of generally uniform thickness throughout and made of a material capable of resisting chipping and bending. 5. A tooth extracting instrument as set forth in claim 4 wherein said head is formed by removing an arcuate segment of the tubing at the forward end thereof and has a bevel along the outer face to form the forward cutting edge. 6. A tooth extracting instrument as set forth in claim 2 wherein the extractor and said inner and outer faces and said cutting edge are generally semispherical in shape. 7. A tooth extracting instrument as set forth in claim 1 wherein said shank is sufficiently long to extend below the jaw of a horse when the extractor head is in engagement with the tooth being removed. 8. A tooth extracting instrument as set forth in claim 1 wherein said extractor head terminates in a forward beveled surface in the outer face to form said cutting edge. 9. A tooth extracting instrument for removing the wolf tooth from the jaw of a horse comprising an elongated shank having a handle at the rear end and an extractor head inclined to the axis of the shank at the forward end, said extractor head having a generally concave inner face and a generally convex outer face and is sized in thickness for slidable insertion between the wolf tooth and an adjacent second premolar tooth, said extractor head terminating in a forward cutting edge, whereby the root of the wolf tooth is loosened as the head is moved vertically upwardly between said wolf tooth and second premolar tooth followed by a prying action of said outer face against the second premolar tooth to pry the first premolar from the upper jaw. 10. A tooth extracting instrument for removing the wolf tooth from a horse comprising an elongated shank made of a length of tubing having a handle detachably mounted on the rear end of the shank and an extractor head formed at the forward end thereof and inclined to the longitudinal axis thereof, said extractor head being of generally uniform thickness and having an open generally semicircular inner face and a generally semicircular outer face for slidable insertion about a side of a wolf tooth between the wolf tooth and an adjacent second premolar tooth, said extractor head terminating in a forward generally beveled cutting edge of semicircular cross section whereby the root of the wolf tooth is loosened as the extractor head is moved in an upward stroke followed by a prying action wherein the outer semicircular face being moved against the side of the second premolar to force said inner face against the root of the wolf tooth and extract the wolf tooTh. |
||||||
| 说明书全文 | |||||||
QQ群二维码
意见反馈
意见反馈