[특허]Cranial drill

Cranial drill 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61B-017/16
출원번호	US-0200725 (1980-10-27)
발명자 / 주소	Reimels Harry G. (Braintree MA) Cerundolo Daniel G. (Dedham MA) Downing Roy W. (Hingham MA)
출원인 / 주소	Codman & Shurtleff, Inc. (Randolph MA 02)
인용정보	피인용 횟수 : 43 인용 특허 : 0

초록 ▼

A completely disposable, permanently assembled drill for perforating bone structures, which includes a generally annular drill body. A primary drill member is slidably and rotatably received in the distal end of the drill body. A driver is slidably and rotatably received in the proximal end of said drill body. A pin and slot-type spring biased clutch is disposed on the confronting surfaces of the drill member and driver. The pin of the clutch projects through the triangular openings and the sidewall of the drill body so as to limit the throw of the clutch and to link the drill body and drill member together. The interaction of the pin against the triangular side of the slot in the drill body produces a component of force which tends to urge the clutch apart. When the drill is placed against the bone structure with a force sufficient to overcome the spring bias, the clutch will engage and the driver and drill member and the drill body will rotate together. The counterbore on the drill body provides a support for the drill mechanism so that the drill member may release when it penetrates the bone structure without having the remainder of the drill move in the direction toward the cranial cavity. The sleeve holds the drill body and driver together and is made of a material that degrades when subjected to sterilization.

대표청구항 ▼

An apparatus for drilling bone structures comprising: a generally annular drill body having generally triangular shaped, diametrically opposed openings extending therethrough, the bases of said triangular shaped openings being aligned generally circumferentially about said drill body and the sides of said openings being aligned at an angle to the axis of said drill body, the proximal end of said drill body including a bearing surface; a generally cylindrical primary drill member freely, slidably and rotationally disposed within said drill body and having cutting surfaces on the distal end thereof; a generally cylindrical drill driver rotatably and slidably disposed into the proximal end of said drill body and having a stem projecting from the proximal end thereof adaptable for insertion into a drill chuck; a generally radially extending flange about the proximal end of said driver facing said drill body bearing surface for limiting the extent which said driver extends into said drill body; a slot and pin-type clutch mechanism cooperatively disposed on the opposing proximal end of said drill member and said distal end of said driver; the pin of said pin and slot clutch extending through the openings in said drill body wall and interacting with the base of said triangular slot to limit the forward movement of the drill member when the clutch is decoupled and interacting with the side of said triangular opening when the clutch is coupled so that when the drill member penetrates said bone structure, the component of force between the pin and the openings tends to accelerate the coupling of the clutch; said clutch means further including a compression spring disposed between confronting surfaces of said drill member and said driver for urging the two apart and providing a resistance force which is overcome when the drill member is pushed against the bone structure and drilling begins.

이 특허를 인용한 특허 (43)

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Walus Richard L. (Norwell MA), Assembly sleeve for cranial drill.
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Green, James M.; Kmiec, Jr., Stanley J., Attachable/detachable reaming head for surgical reamer.
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Baker John W. (Acton MA), Cranial perforator with reentrant cutting segment.
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Nakaji, Peter, Cranial plating and bur hole cover system and methods of use.
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Leonhardt, Howard J; Lashinski, Robert D, Deployment system for myocardial cellular material.
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Leonhardt, Howard J; Lashinski, Robert D., Deployment system for myocardial cellular material.
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Rathbun, David S.; Suh, Sean S.; Roth, Christoph Andreas; Duong, Lan Anh Nguyen; Ryan, Christopher J., Drill-tap-screw drill guide.
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Rathbun,David S.; Suh,Sean S.; Roth,Christoph Andreas; Duong,Lan Anh, Free hand drill guide.
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Baker John W. (4 Wachusett Dr. Acton MA 01720), Method of drilling through a bone structure.
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Walsh, Conor James; Thomas, Ajith; Kesner, Samuel Benjamin; Pei, Hao; Xiao, Kechao; Loschak, Paul; Galloway, Kevin C., Methods and devices for safely penetrating materials.
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Del Rio Eddy H. ; Anspach ; III William E., Perforator.
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Westin Craig D. (1383 Arlington Dr. Salt Lake City UT 84103), Retractable shield apparatus and method for a bone drill.
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Smith Graham, Surgical instrument.
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Haeusler Rainer,DEX ; Hoegerle Roland Alois,DEX ; Lutze Theodor,DEX ; Mattes Norbert,DEX, Surgical instrument for cutting-out a cranial disc from the cranial bone.
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Bray Robert S. (411 Pinata Pl. Fullerton CA 92635), Surgical methods and apparatus for bone removal.
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Patwardhan, Ravish, Surgical navigation.
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Patwardhan, Ravish V., Surgical navigation.
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Bodine, Thomas J.; Plato, Barry E.; Agan, Kevin S.; Norona, Joao, Transmission and variable radially expanding spring clutch assembly.
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Bodine, Thomas J.; Plato, Barry E.; Agan, Kevin S.; Norona, Joao, Transmission and variable radially expanding spring clutch assembly.
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Bodine, Thomas J.; Plato, Barry E.; Agan, Kevin S.; Norona, Joao, Transmission and variable radially expanding spring clutch assembly.
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Smith Graham, Undercutting surgical instrument.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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