US3554192A - Medullary space drill - Google Patents

Medullary space drill Download PDF

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Publication number
US3554192A
US3554192A US747000A US3554192DA US3554192A US 3554192 A US3554192 A US 3554192A US 747000 A US747000 A US 747000A US 3554192D A US3554192D A US 3554192DA US 3554192 A US3554192 A US 3554192A
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Prior art keywords
drill
adapter piece
medullary space
individual elements
drill head
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Expired - Lifetime
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US747000A
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Dietmar R Isberner
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Orthopedic Equipment Co Inc
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Orthopedic Equipment Co Inc
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/164Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans intramedullary
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613Component parts
    • A61B17/1615Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
    • A61B17/1617Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material with mobile or detachable parts
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00Cutting by use of rotating axially moving tool
    • Y10T408/65Means to drive tool
    • Y10T408/665Universal or flexible drive connection to rotate Tool
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00Cutting by use of rotating axially moving tool
    • Y10T408/89Tool or Tool with support
    • Y10T408/892Tool or Tool with support with work-engaging structure detachable from cutting edge
    • Y10T408/8923Removable central lead

Definitions

  • the invention relates to a medullary space drill including a flexible shaft carrying at its opposite ends respectively a drill head, and an adapter piece adapted to be connected for rotation with a driving means.
  • the shaft comprises a plurality of parallel flexible elements arranged to provide a central passage for receiving an elongated guide element.
  • Medullary space drills this type are used for boring or widening the medullary space. of bones. in preparation of the insertion of a medullary peg.
  • the medullary canal in the bone in general does not extend along a straight line, and insertion I of the medullary space drill frequently can be effected only at a certain angle relative to the actual direction of the drilling operation.
  • medullary space drills used for widening the medullary canal of bones are provided with a flexible shaft which enables-the drill head,- when penetrating into the medullary canal of the bone,"to follow the extension of the medullary canal, and which furthermore allows displacement of the driving means fotthe drill under a certain between the-separate windings of the beliefs, between the helics, and within theshaft, and cannot be removed completely.
  • the medullary space drills are rendered sterile or autoclaved before every drilling operation, these residues are rendered sterile too; however, examinations of infections have shown that such residues nevertheless may be the cause for infections after operation.
  • advantageous embodiments of the subject matter of the invention consist in that the individual elements are disposed in an annularassembly', that such elements have circular cross section and that they may be welded or soldered adapter piece for rotational connecto the drill head and the tion to a drive shaft.
  • FIG. 1 is a sideelevational view of a medullary space drill according to the invention.
  • FIG. 2 is a cross-sectional view taken along lines 22 of FIG.
  • the flexible'shaft 1 comprises a plurality of elongated, parallel, annularly disposed individual elements 2 of circular crosssection. These elements being united at their ends to form a bundle, for example by welding or brazing.
  • the number of elements 2 depends on the size of the drill. In a drill of l3millimeters diameter, an annular arrangement of eight elements has proved to be expedient.
  • One end of this bundle carries adn'll head 3 being enlarged in the region of its cutting edges, whereas the other end supports an adapter piece 4 for rotational connection to a drive shaft.
  • the adapter piece 4 may have a plurality of projections pressed out therefrom whichprojections are engaged, in known manner.
  • a union nut 6 adapted to provide the connection with a complementary adapter piece of a drivi'n means.
  • the outer diameter of the flex ble shaft 1 preferab y. is slightly smaller than that of the adapter piece 4 and of that portion of the drill head 3 which does not have any cutting edges.
  • both the adapter piece 4'and the drill head 3 may be provided, in known manner, with a central bore or passage 7 having approximately the some inner diameter as the flexible shaft 1 formed by the bundle of annularly arranged elements 2, said bore or passage 7 being adapted to receive therein an elongated guide element (not shown).
  • a medullary space drill including a flexible shaft carrying at its opposite ends respectively a drill head having an axial bore therethrough. and an adapter piece for connection to a drive shaft whereby said drill may be rotated, said adapter piece having an axial bore therethrough, at least a portion of said flexible shaft being formed of a plurality of parallel, flexible individual elements extending between said drill head and said adapter piece, said individual elements being arranged to provide a central passage which together with the bores in said drill head and adapter piece is adapted to receive an elongated guide element.

Abstract

The invention relates to a medullary space drill including a flexible shaft carrying at its opposite ends respectively a drill head, and an adapter piece adapted to be connected for rotation with a driving means. The shaft comprises a plurality of parallel flexible elements arranged to provide a central passage for receiving an elongated guide element.

Description

United States Patent Dietmar R. lsberner Inventor Gross-Nordsee, Germany Appl. No. 747.000 Filed July 23, 1968 Patented Jan. 12, 1971 Assignee Orthopedic Equipment Company, inc.
Bourbon, Ind. a corporation of Indiana Priority July 24, 1967 Germany No. 1,566,134
MEDULLARY SPACE DRILL 5 Claims, 2 Drawing Figs.
US. Cl 128/83, 128/303. l28/3l0: 77/ 5,77/21 Int. Cl A611 5/04 [50] Field of Search l28/83, 303, 303.14, 92E, 305, 310; 77/15, 58, 65, 20, 21,
[56] References Cited UNITED STATES PATENTS 2,747,384 5/1956 Beam 77/15X 2,905,178 9/1959 Hilzinger Ill 75/15X Primary Examiner-Adele M. Eager Assistant Examiner-J. Yasko Attorney-Cushman, Darby & Cushman' ABSTRACT: The invention relates to a medullary space drill including a flexible shaft carrying at its opposite ends respectively a drill head, and an adapter piece adapted to be connected for rotation with a driving means. The shaft comprises a plurality of parallel flexible elements arranged to provide a central passage for receiving an elongated guide element.
PATEmenJmzmu 'IIIIF .l ill FIG. 1
mvsmoa Jaw/4e K136594496 l I. v Manu LAnY sPA'cE DRILL {DISCLOSURE .f
Medullary space drills this type are used for boring or widening the medullary space. of bones. in preparation of the insertion of a medullary peg. The medullary canal in the bone in general does not extend along a straight line, and insertion I of the medullary space drill frequently can be effected only at a certain angle relative to the actual direction of the drilling operation. For this reason medullary space drills used for widening the medullary canal of bonesare provided with a flexible shaft which enables-the drill head,- when penetrating into the medullary canal of the bone,"to follow the extension of the medullary canal, and which furthermore allows displacement of the driving means fotthe drill under a certain between the-separate windings of the beliefs, between the helics, and within theshaft, and cannot be removed completely. As the medullary space drills are rendered sterile or autoclaved before every drilling operation, these residues are rendered sterile too; however, examinations of infections have shown that such residues nevertheless may be the cause for infections after operation.
Another disadvantage of the prior medullary space drills consists in that atwisting angle is formed between the drill head and the adapter piece for rotational'connection with a drive shaft, which angle may be as great'a's 20, and exhibits unfavorable effects in the course of the actual working opera- ,tion. Due to the elasticity of their shafts such prior drills therefore tend to chatter, and this disturbs the operation. Thus, it is an object of the invention to provide an improved medullary space drill havinga sufficiently flexible shaft, which may easily and completely be cleaned, which has substantial torsional rigidity, and which provides for smooth and uniform drilling operation even under maximum load.
According to the invention, these objects are solved by forming the shaft from a plurality of 7 parallel, flexible individual elements.
Furthermore, advantageous embodiments of the subject matter of the invention consist in that the individual elements are disposed in an annularassembly', that such elements have circular cross section and that they may be welded or soldered adapter piece for rotational connecto the drill head and the tion to a drive shaft.
The invention is hereafter explained in greater detail in connection with an embodiment thereof. by means of the drawings, wherein:
FIG; 1 is a sideelevational view of a medullary space drill according to the invention, and
FIG. 2 is a cross-sectional view taken along lines 22 of FIG.
According to FIGS, 1 and 2, the flexible'shaft 1 comprises a plurality of elongated, parallel, annularly disposed individual elements 2 of circular crosssection. these elements being united at their ends to form a bundle, for example by welding or brazing. The number of elements 2 depends on the size of the drill. In a drill of l3millimeters diameter, an annular arrangement of eight elements has proved to be expedient. One end of this bundle carries adn'll head 3 being enlarged in the region of its cutting edges, whereas the other end supports an adapter piece 4 for rotational connection to a drive shaft. The adapter piece 4 may have a plurality of projections pressed out therefrom whichprojections are engaged, in known manner. by a union nut 6 adapted to provide the connection with a complementary adapter piece of a drivi'n means. The outer diameter of the flex ble shaft 1 preferab y. is slightly smaller than that of the adapter piece 4 and of that portion of the drill head 3 which does not have any cutting edges.
Furthermore, both the adapter piece 4'and the drill head 3 may be provided, in known manner, witha central bore or passage 7 having approximately the some inner diameter as the flexible shaft 1 formed by the bundle of annularly arranged elements 2, said bore or passage 7 being adapted to receive therein an elongated guide element (not shown).
I claim:
1. A medullary space drill including a flexible shaft carrying at its opposite ends respectively a drill head having an axial bore therethrough. and an adapter piece for connection to a drive shaft whereby said drill may be rotated, said adapter piece having an axial bore therethrough, at least a portion of said flexible shaft being formed of a plurality of parallel, flexible individual elements extending between said drill head and said adapter piece, said individual elements being arranged to provide a central passage which together with the bores in said drill head and adapter piece is adapted to receive an elongated guide element.
2. The medullary space drill according to claim 1, wherein 5.-The medullary space drill according to claim 1 wherein said individual elements are soldered to said drill head and said adapter piece respectively.

Claims (5)

1. A medullary space drill including a flexible shaft carrying at its opposite ends respectively a drill head having an axial bore therethrough, and an adapter piece for connection to a drive shaft whereby said drill may be rotated, said adapter piece having an axial bore therethrough, at least a portion of said flexible shaft being formed of a plurality of parallel, flexible individual elements extending between said drill head and said adapter piece, said individual elements being arranged to provide a central passage which together with the bores in said drill head and adapter piece is adapted to receive an elongated guide element.
2. The medullary space drill according to claim 1, wherein said individual elements are positioned in an annular assembly.
3. The medullary space drill according to claim 1 wherein said individual elements have circular cross sections.
4. The medullary space drill according to claim 1 wherein said individual elements are welded to the drill head and to said adapter piece respectively.
5. The medullary space drill according to claim 1 wherein said individual elements are soldered to said drill head and said adapter piece respectively.
US747000A 1967-07-24 1968-07-23 Medullary space drill Expired - Lifetime US3554192A (en)

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Cited By (90)

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US4473070A (en) * 1983-01-05 1984-09-25 Regents Of The University Of Michigan Intramedullary reamer
US4706659A (en) * 1984-12-05 1987-11-17 Regents Of The University Of Michigan Flexible connecting shaft for intramedullary reamer
EP0253526A1 (en) * 1986-06-27 1988-01-20 DiPietropolo, Al Flexible medullary reamer
US4929127A (en) * 1988-06-22 1990-05-29 Fischerwerke Artur Fischer Gmbh & Co. Kg Drill bit for producing drilled holes with an undercut
US4941466A (en) * 1987-04-13 1990-07-17 Romano Jack W Curved bore drilling method and apparatus
US5002546A (en) * 1987-04-13 1991-03-26 Romano Jack W Curved bore drilling apparatus
US5015255A (en) * 1989-05-10 1991-05-14 Spine-Tech, Inc. Spinal stabilization method
WO1991011962A1 (en) * 1990-02-09 1991-08-22 Romano Jack W Curved bore drilling apparatus
US5122134A (en) * 1990-02-02 1992-06-16 Pfizer Hospital Products Group, Inc. Surgical reamer
US5190548A (en) * 1991-04-10 1993-03-02 Linvatec Corporation Surgical reamer
US5269785A (en) * 1990-06-28 1993-12-14 Bonutti Peter M Apparatus and method for tissue removal
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US5445639A (en) * 1989-05-10 1995-08-29 Spine-Tech, Inc. Intervertebral reamer construction
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US5499984A (en) * 1994-04-07 1996-03-19 Snap-On Incorporated Universal modular reamer system
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US5549613A (en) * 1993-09-15 1996-08-27 Mitek Surgical Products, Inc. Modular surgical drill
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Cited By (246)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4473070A (en) * 1983-01-05 1984-09-25 Regents Of The University Of Michigan Intramedullary reamer
US4706659A (en) * 1984-12-05 1987-11-17 Regents Of The University Of Michigan Flexible connecting shaft for intramedullary reamer
EP0253526A1 (en) * 1986-06-27 1988-01-20 DiPietropolo, Al Flexible medullary reamer
US4751922A (en) * 1986-06-27 1988-06-21 Dipietropolo Al Flexible medullary reamer
US5002546A (en) * 1987-04-13 1991-03-26 Romano Jack W Curved bore drilling apparatus
US4941466A (en) * 1987-04-13 1990-07-17 Romano Jack W Curved bore drilling method and apparatus
WO1991011961A1 (en) * 1988-05-20 1991-08-22 Romano Jack W Curved bore drilling method and apparatus
US4929127A (en) * 1988-06-22 1990-05-29 Fischerwerke Artur Fischer Gmbh & Co. Kg Drill bit for producing drilled holes with an undercut
US5445639A (en) * 1989-05-10 1995-08-29 Spine-Tech, Inc. Intervertebral reamer construction
US5015255A (en) * 1989-05-10 1991-05-14 Spine-Tech, Inc. Spinal stabilization method
US5062845A (en) * 1989-05-10 1991-11-05 Spine-Tech, Inc. Method of making an intervertebral reamer
US5122134A (en) * 1990-02-02 1992-06-16 Pfizer Hospital Products Group, Inc. Surgical reamer
WO1991011962A1 (en) * 1990-02-09 1991-08-22 Romano Jack W Curved bore drilling apparatus
US6468289B1 (en) 1990-06-28 2002-10-22 Peter M. Bonutti Apparatus and method for tissue removal
US6543455B2 (en) 1990-06-28 2003-04-08 Peter M. Bonutti Cell harvesting method
US5269785A (en) * 1990-06-28 1993-12-14 Bonutti Peter M Apparatus and method for tissue removal
US6607534B2 (en) 1990-06-28 2003-08-19 Peter M. Bonutti Tissue engagement method
US7134437B2 (en) 1990-06-28 2006-11-14 Bonutti Ip, Llc Method for utilizing human tissue
US6652532B2 (en) 1990-06-28 2003-11-25 Bonutti 2003 Trust A Tissue repair method
US6719803B2 (en) 1990-06-28 2004-04-13 Bonutti 2003 Trust-A Method for forming and implanting a grafting material containing tissue
US5577517A (en) * 1990-06-28 1996-11-26 Bonutti; Peter M. Method of grafting human tissue particles
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USD902405S1 (en) 2018-02-22 2020-11-17 Stryker Corporation Self-punching bone anchor inserter
USD976405S1 (en) 2018-02-22 2023-01-24 Stryker Corporation Self-punching bone anchor inserter
USD958989S1 (en) 2018-02-22 2022-07-26 Stryker Corporation Self-punching bone anchor inserter

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