WO2009141634A1 - A drill bit for use in surgery - Google Patents

A drill bit for use in surgery Download PDF

Info

Publication number
WO2009141634A1
WO2009141634A1 PCT/GB2009/001307 GB2009001307W WO2009141634A1 WO 2009141634 A1 WO2009141634 A1 WO 2009141634A1 GB 2009001307 W GB2009001307 W GB 2009001307W WO 2009141634 A1 WO2009141634 A1 WO 2009141634A1
Authority
WO
WIPO (PCT)
Prior art keywords
drill bit
drilling formation
drilling
formation
drill
Prior art date
Application number
PCT/GB2009/001307
Other languages
French (fr)
Inventor
John Alexander William Gauld
Amr Ahmed Fouad Zahran
Original Assignee
Osteocare Implant System Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Osteocare Implant System Limited filed Critical Osteocare Implant System Limited
Publication of WO2009141634A1 publication Critical patent/WO2009141634A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0089—Implanting tools or instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613—Component parts
    • A61B17/1615—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
    • A61B17/1679—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the ear
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
    • A61B17/1688—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the sinus or nose

Definitions

  • This invention relates to a drill bit and, more especially, this invention relates to a drill bit for use in surgery.
  • the drill bit may be used on various bone structures so that, for example, the drill bit may be used for dental implant surgery, or in maxillofacial prosthesis, for example for ears and noses.
  • a hole is drilled into a person's jaw bone in order to enable a dental implant to be screwed into the jaw bone.
  • a hole of a desired size is usually obtained by sequential drilling using dental drill bits of increasing size. It is often inconvenient to have to change drill bits in order to reach a drill bit of a required size. This problem also exists in other types of surgery, for example maxillofacial prosthesis.
  • many persons receiving dental implants find the sequential drilling in order to increase in drill bit size to be somewhat unnerving.
  • a drill bit for use in surgery which drill bit comprises a first drilling formation, a second and larger drilling formation, and a holder portion by which the drill bit is held in a drill, the first drilling formation being axially located on an end of the second drilling formation furthest from the holder portion, the first drilling formation being a triangle with cutting edges, the second drilling formation having a plurality of cutting flutes, and the first drilling formation being such it forms a tip to the second drilling formation and in use drills a pilot hole for the second drilling formation whilst at the same time facilitates the elimination of vibration and the prevention of slipping of the drill bit when drilling into curved bone surfaces.
  • the drill bit of the present invention is thus advantageous in a number of aspects as compared with existing drill bits.
  • the drill bit of the present invention with its first and second drilling formations is able to eliminate the need for sequential drilling using two or more different sized drill bits.
  • the drill bit facilitates the elimination of vibration and the prevention of slipping of the drill bit when drilling into curved bone surfaces.
  • the elimination of the vibration is advantageous for the patient.
  • the prevention of slipping of the drill bit is advantageous for the surgeon conducting the surgery, for example dental implant surgery.
  • the drill bit may be one in which the first drilling formation has a cutting diameter of approximately one fifth of the cutting diameter of the second drilling formation.
  • the drill bit may be one in which the first drilling formation has three triangular faces.
  • the second drilling formation preferably has three or four of the cutting flutes.
  • the drill bit may include a support portion located between the second drilling formation and the holder portion, the support portion being for receiving an abutment collar for limiting the depth of penetration of the drill bit.
  • the abutment collar may be made of a plastics material or any other suitable and appropriate material.
  • the holder portion may comprise a cylindrical shank portion, and a grooved end portion which has a flat on one side.
  • the present invention also extends to a drill when including a drill bit according to any one of the preceding claims.
  • Figure 1 is a perspective view of a dental drill bit of the present invention
  • Figure 2 is a perspective view from a different side of the dental drill bit as shown in Figure 1 ;
  • Figure 3 is a side view of the dental drill bit as shown in Figure 2;
  • Figure 4 is a top view of the dental drill bit as shown in Figure 2.
  • Figure 5 is an end view of the dental drill bit as shown in Figure 2.
  • the dental drill bit 2 for use in dental implant surgery.
  • the dental drill bit 2 comprises a first drilling formation 4, a second and larger drilling formation 6, and a holder portion 8 by which the dental drill bit 2 is held in a dental drill (not shown).
  • the first drilling formation 4 is axially located on an end 10 of the second drilling formation 6 furthest from the holder portion 8.
  • the first drilling formation 3 is a triangle with cutting edges 12.
  • the second drilling formation 6 has a plurality of cutting flutes 14.
  • the first drilling formation 4 is such that it forms a tip to the second drilling formation 6.
  • the first drilling formation 4 is also such that in use it drills a pilot hole for the second drilling formation 6, whilst at the same time facilitating the elimination of vibration and the prevention of slipping of the dental drill bit 2 when drilling into curved bone surfaces in the jaws of persons undergoing dental implant surgery.
  • the first drilling formation 4 has a cutting diameter of approximately one fifth of the cutting diameter of the second drilling formation 6.
  • the first drilling formation 4 has three triangular faces as shown.
  • the second drilling formation has three of the cutting flutes 14.
  • the dental drill bit 2 includes a support portion 16 located between the second drilling formation 6 and the holder portion 8.
  • the support portion 16 is for receiving an abutment collar (not shown) for limiting the depth of penetration of the dental drill bit 2.
  • the holder portion 8 comprises a cylindrical shank portion 18, and a grooved end portion 20 having a groove 22 and a flat 24 on one side.
  • the second drilling formation 6 may have four of the cutting flutes 14 instead of the illustrated three cutting flutes 14. As shown in Figure 4, the leading edge of the second drilling formation 6 is at an angle of 10°. Other suitable and appropriate angles may be employed.
  • the dental drill bit 2 may be used on other bone structures, for example in maxillofacial prosthesis.

Abstract

A drill bit (2) for use in surgery, which drill bit (2) comprises a first drilling formation (4), a second and larger drilling formation (6), and a holder portion (8) by which the drill bit (2) is held in a drill, the first drilling formation (4) being axially located on an end (10) of the second drilling formation (6) furthest from the holder portion (8), the first drilling formation (4) being a triangle with cutting edges (12), the second drilling formation (6) having a plurality of cutting flutes (14), and the first drilling formation (4) being such it forms a tip to the second drilling formation (6) and in use drills a pilot hole for the second drilling formation (6) whilst at the same time facilitates the elimination of vibration and the prevention of slipping of the drill bit (2) when drilling into curved bone surfaces.

Description

A DRILL BIT FOR USE IN SURGERY
This invention relates to a drill bit and, more especially, this invention relates to a drill bit for use in surgery. The drill bit may be used on various bone structures so that, for example, the drill bit may be used for dental implant surgery, or in maxillofacial prosthesis, for example for ears and noses.
During dental implant surgery, a hole is drilled into a person's jaw bone in order to enable a dental implant to be screwed into the jaw bone. A hole of a desired size is usually obtained by sequential drilling using dental drill bits of increasing size. It is often inconvenient to have to change drill bits in order to reach a drill bit of a required size. This problem also exists in other types of surgery, for example maxillofacial prosthesis. In addition, many persons receiving dental implants find the sequential drilling in order to increase in drill bit size to be somewhat unnerving.
It is an aim of the present invention to provide an improved drill bit which obviates or reduces the above mentioned problems.
Accordingly, in one non-limiting embodiment of the present invention there is provided a drill bit for use in surgery, which drill bit comprises a first drilling formation, a second and larger drilling formation, and a holder portion by which the drill bit is held in a drill, the first drilling formation being axially located on an end of the second drilling formation furthest from the holder portion, the first drilling formation being a triangle with cutting edges, the second drilling formation having a plurality of cutting flutes, and the first drilling formation being such it forms a tip to the second drilling formation and in use drills a pilot hole for the second drilling formation whilst at the same time facilitates the elimination of vibration and the prevention of slipping of the drill bit when drilling into curved bone surfaces.
The drill bit of the present invention is thus advantageous in a number of aspects as compared with existing drill bits. The drill bit of the present invention with its first and second drilling formations is able to eliminate the need for sequential drilling using two or more different sized drill bits. In addition, the drill bit facilitates the elimination of vibration and the prevention of slipping of the drill bit when drilling into curved bone surfaces. The elimination of the vibration is advantageous for the patient. The prevention of slipping of the drill bit is advantageous for the surgeon conducting the surgery, for example dental implant surgery.
The drill bit may be one in which the first drilling formation has a cutting diameter of approximately one fifth of the cutting diameter of the second drilling formation.
The drill bit may be one in which the first drilling formation has three triangular faces.
The second drilling formation preferably has three or four of the cutting flutes.
The drill bit may include a support portion located between the second drilling formation and the holder portion, the support portion being for receiving an abutment collar for limiting the depth of penetration of the drill bit. The abutment collar may be made of a plastics material or any other suitable and appropriate material.
The holder portion may comprise a cylindrical shank portion, and a grooved end portion which has a flat on one side.
The present invention also extends to a drill when including a drill bit according to any one of the preceding claims.
An embodiment of the invention will now be described solely by way of example and with reference to the accompanying drawings ip which:
Figure 1 is a perspective view of a dental drill bit of the present invention;
Figure 2 is a perspective view from a different side of the dental drill bit as shown in Figure 1 ;
Figure 3 is a side view of the dental drill bit as shown in Figure 2;
Figure 4 is a top view of the dental drill bit as shown in Figure 2; and
Figure 5 is an end view of the dental drill bit as shown in Figure 2.
Referring to the drawings, there is shown a dental drill bit 2 for use in dental implant surgery. The dental drill bit 2 comprises a first drilling formation 4, a second and larger drilling formation 6, and a holder portion 8 by which the dental drill bit 2 is held in a dental drill (not shown).
The first drilling formation 4 is axially located on an end 10 of the second drilling formation 6 furthest from the holder portion 8. The first drilling formation 3 is a triangle with cutting edges 12. The second drilling formation 6 has a plurality of cutting flutes 14. The first drilling formation 4 is such that it forms a tip to the second drilling formation 6. The first drilling formation 4 is also such that in use it drills a pilot hole for the second drilling formation 6, whilst at the same time facilitating the elimination of vibration and the prevention of slipping of the dental drill bit 2 when drilling into curved bone surfaces in the jaws of persons undergoing dental implant surgery.
As can be seen from the drawings, the first drilling formation 4 has a cutting diameter of approximately one fifth of the cutting diameter of the second drilling formation 6. The first drilling formation 4 has three triangular faces as shown. The second drilling formation has three of the cutting flutes 14.
The dental drill bit 2 includes a support portion 16 located between the second drilling formation 6 and the holder portion 8. The support portion 16 is for receiving an abutment collar (not shown) for limiting the depth of penetration of the dental drill bit 2.
As can best be seen from Figures 2, 3 and 4, the holder portion 8 comprises a cylindrical shank portion 18, and a grooved end portion 20 having a groove 22 and a flat 24 on one side.
It is to be appreciated that the embodiment of the invention described above with reference to the accompanying drawings has been given by way of example only and that modifications may be effected. Thus, for example, the second drilling formation 6 may have four of the cutting flutes 14 instead of the illustrated three cutting flutes 14. As shown in Figure 4, the leading edge of the second drilling formation 6 is at an angle of 10°. Other suitable and appropriate angles may be employed. The dental drill bit 2 may be used on other bone structures, for example in maxillofacial prosthesis.

Claims

1. A drill bit for use in surgery, which drill bit comprises a first drilling formation, a second and larger drilling formation, and a holder portion by which the drill bit is held in a drill, the first drilling formation being axially located on an end of the second drilling formation furthest from the holder portion, the first drilling formation being a triangle with cutting edges, the second drilling formation having a plurality of cutting flutes, and the first drilling formation being such it forms a tip to the second drilling formation and in use drills a pilot hole for the second drilling formation whilst at the same time facilitates the elimination of vibration and the prevention of slipping of the drill bit when drilling into curved bone surfaces.
2. A drill bit according to claim 1 in which the first drilling formation has a cutting diameter of approximately one fifth of the cutting diameter of the second drilling formation.
3. A drill bit according to claim 1 or claim 2 in which the first drilling formation has three triangular faces.
4. A drill bit according to any one of the preceding claims in which the second drilling formation has three or four of the cutting flutes.
5. A drill bit according to any one of the preceding claims and including a support portion located between the second drilling formation and the holder portion, the support portion being for receiving an abutment collar for limiting the depth of penetration of the drill bit.
6. A drill bit according to any one of the preceding claims in which the holder portion comprises a cylindrical shank portion, and a grooved end portion which has a flat on one side.
7. A drill when including a drill bit according to any one of the preceding claims.
PCT/GB2009/001307 2008-05-23 2009-05-22 A drill bit for use in surgery WO2009141634A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0809494A GB0809494D0 (en) 2008-05-23 2008-05-23 A drill bit for use in surgery
GB0809494.8 2008-05-23

Publications (1)

Publication Number Publication Date
WO2009141634A1 true WO2009141634A1 (en) 2009-11-26

Family

ID=39616063

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2009/001307 WO2009141634A1 (en) 2008-05-23 2009-05-22 A drill bit for use in surgery

Country Status (2)

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GB (1) GB0809494D0 (en)
WO (1) WO2009141634A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011123375A (en) * 2009-12-11 2011-06-23 Sakata Corp Method of manufacturing liquid developer, and liquid developer
WO2011113115A1 (en) * 2010-03-19 2011-09-22 Cpl Holdings Pty Ltd Drill bit
WO2014150514A1 (en) * 2013-03-15 2014-09-25 Misonix, Incorporated Ultrasonic surgical drill and associated surgical method
EP3542741A1 (en) * 2018-03-22 2019-09-25 Bono, Peter L. Oscillating surgical cutting tool

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4330229A (en) * 1980-12-04 1982-05-18 Omark Industries, Inc. Drill bit
JPH10151604A (en) * 1996-11-25 1998-06-09 Kanefusa Corp Woodworking boring drill
EP0903116A1 (en) * 1997-09-18 1999-03-24 Walter Veneziano An assembly of a mill-reamer and a prosthesis for bone implantology by a screwed pin
US6312432B1 (en) * 2000-03-02 2001-11-06 Nemco Medical, Inc. Bone drill
JP2003245283A (en) * 2002-02-22 2003-09-02 Hisaya Okazaki Perforating direction variable drill

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4330229A (en) * 1980-12-04 1982-05-18 Omark Industries, Inc. Drill bit
JPH10151604A (en) * 1996-11-25 1998-06-09 Kanefusa Corp Woodworking boring drill
EP0903116A1 (en) * 1997-09-18 1999-03-24 Walter Veneziano An assembly of a mill-reamer and a prosthesis for bone implantology by a screwed pin
US6312432B1 (en) * 2000-03-02 2001-11-06 Nemco Medical, Inc. Bone drill
JP2003245283A (en) * 2002-02-22 2003-09-02 Hisaya Okazaki Perforating direction variable drill

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011123375A (en) * 2009-12-11 2011-06-23 Sakata Corp Method of manufacturing liquid developer, and liquid developer
WO2011113115A1 (en) * 2010-03-19 2011-09-22 Cpl Holdings Pty Ltd Drill bit
AU2011229160B2 (en) * 2010-03-19 2012-11-29 Cpl Holdings Pty Ltd Drill bit
CN102811673A (en) * 2010-03-19 2012-12-05 希皮尔控股私人有限公司 Drill bit
WO2014150514A1 (en) * 2013-03-15 2014-09-25 Misonix, Incorporated Ultrasonic surgical drill and associated surgical method
US10076349B2 (en) 2013-03-15 2018-09-18 Misonix, Inc. Ultrasonic surgical drill and associated surgical method
US11272949B2 (en) 2013-03-15 2022-03-15 Misonix, Incorporated Ultrasonic surgical drill and associated surgical method
EP3542741A1 (en) * 2018-03-22 2019-09-25 Bono, Peter L. Oscillating surgical cutting tool

Also Published As

Publication number Publication date
GB0809494D0 (en) 2008-07-02

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