WO1995022290A1 - Osseous pins and wires for fracture fixation and directional guide wires - Google Patents
Osseous pins and wires for fracture fixation and directional guide wires Download PDFInfo
- Publication number
- WO1995022290A1 WO1995022290A1 PCT/US1995/002180 US9502180W WO9522290A1 WO 1995022290 A1 WO1995022290 A1 WO 1995022290A1 US 9502180 W US9502180 W US 9502180W WO 9522290 A1 WO9522290 A1 WO 9522290A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pin
- shaft
- annular surface
- distal portion
- abrading means
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
-
- 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
- A61B17/1697—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans specially adapted for wire insertion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/846—Nails or pins, i.e. anchors without movable parts, holding by friction only, with or without structured surface
- A61B17/848—Kirschner wires, i.e. thin, long nails
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B2017/320004—Surgical cutting instruments abrasive
Definitions
- Applicant's invention relates to orthopaedic apparatuses, and more particularly to apparatuses useful in fixation of osseous fractures.
- osseous pins and wires are frequently used to treat fractures and, on occasion, to serve as a guide for directing placement of orthopaedic screws and other implants.
- an orthopaedic pin or wire
- the pin then stabilizes bone segments as against relative movement which might otherwise disrupt the healing process.
- Optimum placement of an orthopaedic wire or pin involves the wire or pin traversing the fracture gap between bone segments in an orientation which is substantially perpendicular to a plane which is generally defined by the fracture.
- Such optimum placement of pins and wire is often difficult, if not impossible using presently available pins and wires.
- the reason for this difficulty lies in the typical relationship between the orientations of most fractures and the orientation of the fractured bone's cortex. Because virtually no fracture which may be suitably treated using pins and wires will be oriented parallel to the exterior surface of the cortex, a properly directed pin or wire must enter the bone obliquely to its surface. Without the benefit of a "pilot hole” or other means for facilitating the preferred point of entry and/or angle of entry, precisely proper placement and orientation of pins and wires is elusive in many, if not most pin or wire fixation situations.
- a pin or wire passes through the cortex, its angle of approach to the fracture site is substantially, irreversibly fixed, whether the trajectory is the desired one or not. This is the result of the only cutting surface lying at the distal tip of presently available pins or wires.
- the channel which is formed proximal to the cutting tip of the wire or pin as the pin or wire passes through the osseous tissue defines the orientation of any further progress through the tissue. If the initial orientation is not as desired, the surgeon must either begin anew by cutting a new path, or accept the less than optimal wire or pin orientation.
- Applicant's present invention provides a design for an improved orthopaedic pin or wire a distal length of which, in addition to the distal tip, exhibits abrading surface features.
- An orthopaedic pin or wire of Applicant's invention permits its user to enter the cortex of a recipient bone at essentially any convenient orientation and, after entering the cortex at precisely the desired point of entry, to change orientation of the pin or wire with the abrading surfaces acting as a rasp to form a channel through which the pin or wire can be rotated to the orientation needed to properly approach and span a fracture.
- FIG. 1 is an elevational view of a currently available osseous pin.
- Fig. 2 is an elevational depiction of the first stage of an attempted implantation of a current osseous pin at a trajectory oblique to the recipient bone's cortex.
- Fig. 3 is a depiction of an accidental diversion of a current osseous pin resulting from the attempted pin trajectory depicted in Fig. 2.
- Fig. 4 depicts a more typical, compromising entry trajectory for entering the cortex of a recipient bone and the inability to correct the trajectory with currently available pins.
- Fig. 5 depicts the less than desirable pin orientation resulting from the entry trajectory initiated in the step depicted in Fig. 4.
- Fig. 6 is an elevational view of an osseous pin of Applicant's invention.
- Fig. 7 is a partial elevational view of the distal portion of a pin of Applicant's invention having as its abrading means knurl nodes carved or etched into the pin's surface.
- Fig. 8 is a partial elevational view of the distal portion of a pin of Applicant's invention having as its abrading means helical flutes carved or etched into the pin's surface.
- Fig. 9 is an elevational depiction of an orthopaedic pin of Applicant's invention at three progressive stages of implantation: (1) prior to entry into the cortex; (2) after entry into the cortex, but at a first trajectory; and (3) after correction to a second, optimum trajectory for traversing a fracture.
- Pin 10 includes a chisel-type distal drilling tip 12 as is common to most presently available orthopaedic pins or wires. A length of the distal end of pin 10 exhibits a textured surface which forms pin 10's lateral abrading surface 14. Abrading surface 14 may be formed on the surface of pin 10 in several alternative ways.
- the preferred embodiment of Applicant's pin 10 exhibits a knurled surface which is formed in metal milling operations as are amply known in the art. Hundreds of knurl nodes 16 are formed as node defining furrows 18 are cut into the surface of pin 10. Laser etching can also be used to form less pronounced nodes 16.
- Applicant's pin 10 exhibits a more randomly textured abrading surface 14 which is forme by "sand t ting" a distal length of pin 10 using abras .e particl projected against pin 10 with compressed air. This alternative embodiment exhibits a less abrasive, almost matte like finish which may be preferred by some surgeons.
- a still further alternative embodiment of Applican •s pin 10 is endowed with its abrading surface through application of an abrasive coating, such as an approved implant material which is applied to pin 10's surface, rather than a texturing of pin 10's metal itself.
- This third embodiment of Applicant's invention is not considered to be the preferred embodiment because the addition of the abrasive coating slightly increases the pin's diameter (unless the distal portion of pin 10 is reduced in diameter precisely enough to compensate for the thickness of the coating) .
- the increased diameter of the distal portion of pin 10 having the abrasive coating will form a passage of slightly greater diameter than the more proximal lengths of pin 10 thus causing a looser fit between bone and pin.
- pin 10 is straight forward. Initial entry into a recipient bone may be made at virtually any desired angle using a standard orthopaedic drill. Unlike when using prior art pins or wires, however, the trajectory of pin 10 can be quickly and easily “corrected” to the ultimately desired trajectory by simply pivoting pin 10 toward the desired orientation thereby allowing abrading surface 14 to cut a furrow in the osseous tissue to allow change in pin 10 orientation. Once the optimum orientation is achieved, pin 10 is simply advanced to its final implantation position.
- Applicant's pin 10 provides a unique opportunity for increased safety and reduction in procedure time which is unavailable through use of any prior art orthopaedic wire or pin.
- the ease with which corrections in orientation can be effected during implantation of pin 10 virtually eliminates the need for multiple attempts to optimally position pin 10 as would attend the use of any prior art pin or wire.
- pin 10 forms its own canal and need not be preceded by any other instrument, drill bit or otherwise, steps in the implantation of wires or pins are eliminated. These factors reduce operating room time and, by simple virtue of reducing the time luring which the procedure is under way, reduce the likelihood of infection. It also enables easier use for percutaneous fixation of bone and guide wire placement where a pre-drilled implant canal for passage of a pin, wire or guide pin is often difficult or impossible o find percutaneously.
- pin 10 In addition to reducing the number of ⁇ 3 and instruments involved in implanting Applicant's m 10, which is a worthy objective itself, pin 10 obviates any motivation to use traditional drill bits to correct the orientation of a pin or wire canal. Drill bits tend to snare surrounding tissue causing substantial tissue damage, increased bleeding and increased risk of infection.
Abstract
Applicant's invention is of an improved design for orthopaedic pins or wires as used in fixation of osseous fractures and guide pins for screws or other implants. A distal portion of pins and wires of Applicant's invention exhibit an abrading surface which allows the pin or wire to ream surrounding cortical bone as a correction in the trajectory of the pin is desired after initial entry through the cortex. The ability to correct pin or wire orientation after breaching the cortex is particularly advantageous when the ultimately desired pin or wire trajectory, as dictated by the orientation of the fracture, intersects the cortex at an oblique orientation.
Description
TITLE OSSEOUS PINS & WIRES FOR FRACTURE FIXATION & DIRECTIONAL GUIDE WIRES
CITATION TO PRIOR U.S. APPLICATION (S)
This is a continuation application with respect to a
U.S. Application filed by the present Applicant on February 18, 1994 (serial number 08/198,823) from which
Priority is Claimed. Sole inventorship with respect to this Application lies with the present Applicant.
FIELD OF THE INVENTION Applicant's invention relates to orthopaedic apparatuses, and more particularly to apparatuses useful in fixation of osseous fractures.
BACKGROUND OF THE INVENTION
Referring to Figures 1 - 5, osseous pins and wires are frequently used to treat fractures and, on occasion, to serve as a guide for directing placement of orthopaedic screws and other implants. When used to stabilize a fracture, an orthopaedic pin (or wire) is positioned whereby the pin extends from the fracture into adjacent bone segments. The pin then stabilizes bone segments as against relative movement which might otherwise disrupt the healing process.
Optimum placement of an orthopaedic wire or pin involves the wire or pin traversing the fracture gap between bone segments in an orientation which is
substantially perpendicular to a plane which is generally defined by the fracture. Such optimum placement of pins and wire is often difficult, if not impossible using presently available pins and wires. The reason for this difficulty lies in the typical relationship between the orientations of most fractures and the orientation of the fractured bone's cortex. Because virtually no fracture which may be suitably treated using pins and wires will be oriented parallel to the exterior surface of the cortex, a properly directed pin or wire must enter the bone obliquely to its surface. Without the benefit of a "pilot hole" or other means for facilitating the preferred point of entry and/or angle of entry, precisely proper placement and orientation of pins and wires is elusive in many, if not most pin or wire fixation situations.
Once a pin or wire passes through the cortex, its angle of approach to the fracture site is substantially, irreversibly fixed, whether the trajectory is the desired one or not. This is the result of the only cutting surface lying at the distal tip of presently available pins or wires. The channel which is formed proximal to the cutting tip of the wire or pin as the pin or wire passes through the osseous tissue defines the orientation of any further progress through the tissue. If the initial orientation is not as desired, the surgeon must either begin anew by cutting a new path, or accept the less than optimal wire or pin orientation.
Thus far no one has suggested or provided any means by which an orthopaedic pin or wire can be precisely placed at virtually any orientation relative both to the cortex of the recipient bone and to the fracture. Particularly in the case of a fracture for which an optimal pin or wire trajectory would intersect the cortex
at an angle less than about 45°, precision as to placement or as to desired pin or wire orientation is likely to be sacrificed. Similarly, guide wires needed for implants suffer from the same drawbacks. Notwithstanding the more than fifty year history of orthopaedic pins and wires, and the persistence of problems with their implantation as described above, no one has suggested or provided orthopaedic pins or wires which in any way facilitate proper placement and orientation, when such requires a pin or wire trajectory which is oblique to the cortex of the fractured bone. Greatly needed in orthopaedics is an orthopaedic pin or wire which in some way facilitates a precise placement and optimal orientation of the fracture pin or wire as well as a guide pin relative to virtually any fracture or cortical orientation.
SUMMARY OF THE INVENTION
It is an object of the present invention to provi.e a design for an improved orthopaedic pin, wire, or guide wire which facilitates placement and desired orientation.
It is another object of the present invention to provide a design for a novel orthopaedic pin, wire, or guide wire which includes means for modifying the trajectory thereof even after partial entry into a recipient bone.
It is another object of the present invention to provide a design for an improved orthopaedic pin or wire which permits entry into the cortex of a recipient bone at an angle near perpendicular to the cortex surface and subsequent modification of the pin or wire trajectory for achieving optimum orientation relative to a fracture or other orientation for implant placement.
In satisfaction of these and related objectives,
Applicant's present invention provides a design for an improved orthopaedic pin or wire a distal length of which, in addition to the distal tip, exhibits abrading surface features. An orthopaedic pin or wire of Applicant's invention permits its user to enter the cortex of a recipient bone at essentially any convenient orientation and, after entering the cortex at precisely the desired point of entry, to change orientation of the pin or wire with the abrading surfaces acting as a rasp to form a channel through which the pin or wire can be rotated to the orientation needed to properly approach and span a fracture.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an elevational view of a currently available osseous pin.
Fig. 2 is an elevational depiction of the first stage of an attempted implantation of a current osseous pin at a trajectory oblique to the recipient bone's cortex.
Fig. 3 is a depiction of an accidental diversion of a current osseous pin resulting from the attempted pin trajectory depicted in Fig. 2.
Fig. 4 depicts a more typical, compromising entry trajectory for entering the cortex of a recipient bone and the inability to correct the trajectory with currently available pins.
Fig. 5 depicts the less than desirable pin orientation resulting from the entry trajectory initiated in the step depicted in Fig. 4.
Fig. 6 is an elevational view of an osseous pin of Applicant's invention.
Fig. 7 is a partial elevational view of the distal portion of a pin of Applicant's invention having as its abrading means knurl nodes carved or etched into the pin's surface.
Fig. 8 is a partial elevational view of the distal portion of a pin of Applicant's invention having as its abrading means helical flutes carved or etched into the pin's surface. Fig. 9 is an elevational depiction of an orthopaedic pin of Applicant's invention at three progressive stages of implantation: (1) prior to entry into the cortex; (2) after entry into the cortex, but at a first trajectory; and (3) after correction to a second, optimum trajectory for traversing a fracture.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to Figures 6 - 8, an orthopaedic pin of
Applicant's invention is identified by reference numeral 10. Pin 10 includes a chisel-type distal drilling tip 12 as is common to most presently available orthopaedic pins or wires. A length of the distal end of pin 10 exhibits a textured surface which forms pin 10's lateral abrading surface 14. Abrading surface 14 may be formed on the surface of pin 10 in several alternative ways. The preferred embodiment of Applicant's pin 10 exhibits a knurled surface which is formed in metal milling operations as are amply known in the art. Hundreds of knurl nodes 16 are formed as node defining furrows 18 are cut into the surface of pin 10. Laser etching can also be used to form less pronounced nodes 16.
An alternative embodiment of Applicant's pin 10 exhibits a more randomly textured abrading surface 14 which is forme by "sand t ting" a distal length of pin 10 using abras .e particl projected against pin 10 with compressed air. This alternative embodiment exhibits a less abrasive, almost matte like finish which may be preferred by some surgeons.
A still further alternative embodiment of Applican •s pin 10 is endowed with its abrading surface through application of an abrasive coating, such as an approved implant material which is applied to pin 10's surface, rather than a texturing of pin 10's metal itself. This third embodiment of Applicant's invention is not considered to be the preferred embodiment because the addition of the abrasive coating slightly increases the pin's diameter (unless the distal portion of pin 10 is reduced in diameter precisely enough to compensate for the thickness of the coating) . The increased diameter of the distal portion of pin 10 having the abrasive coating will form a passage of slightly greater diameter than the more proximal lengths of pin 10 thus causing a looser fit between bone and pin.
Referring to Figure 9, regardless of the embodiment used, use of pin 10 is straight forward. Initial entry into a recipient bone may be made at virtually any desired angle using a standard orthopaedic drill. Unlike when using prior art pins or wires, however, the trajectory of pin 10 can be quickly and easily "corrected" to the ultimately desired trajectory by simply pivoting pin 10 toward the desired orientation thereby allowing abrading surface 14 to cut a furrow in the osseous tissue to allow change in pin 10 orientation. Once the optimum orientation is achieved, pin 10 is simply advanced to its final implantation position.
Applicant's pin 10 provides a unique opportunity for increased safety and reduction in procedure time which is unavailable through use of any prior art orthopaedic wire or pin. The ease with which corrections in orientation can be effected during implantation of pin 10 virtually eliminates the need for multiple attempts to optimally position pin 10 as would attend the use of any prior art
pin or wire. Furthermore, because pin 10 forms its own canal and need not be preceded by any other instrument, drill bit or otherwise, steps in the implantation of wires or pins are eliminated. These factors reduce operating room time and, by simple virtue of reducing the time luring which the procedure is under way, reduce the likelihood of infection. It also enables easier use for percutaneous fixation of bone and guide wire placement where a pre-drilled implant canal for passage of a pin, wire or guide pin is often difficult or impossible o find percutaneously.
In addition to reducing the number of ε 3 and instruments involved in implanting Applicant's m 10, which is a worthy objective itself, pin 10 obviates any motivation to use traditional drill bits to correct the orientation of a pin or wire canal. Drill bits tend to snare surrounding tissue causing substantial tissue damage, increased bleeding and increased risk of infection. Although the invention has been described with reference to specific embodiments, this description is not meant to be construed in a limited sense. Various modifications of the disclosed embodiments, as well as alternative embodiments of the inventions will become apparent to persons skilled in the art upon the reference to the description of the invention. It is, therefore, contemplated that the appended claims will cover such modifications that fall within the scope of the invention.
Claims
1. An improved orthopaedic pin comprising an elongate shaft, said shaft having a distal drilling tip and a substantially annular surface over the length of said shaft, a distal portion of said annular surface which juxtaposes said tip exhibiting abrading means for abrading osseous tissue adjacent to said distal portion.
2. The invention of Claim l wherein said abrading means comprises a plurality of knurl nodes formed over said distal portion of said annular surface of said pin.
3. The invention of Claim l wherein said abrading means comprises etched surface irregularities dispersed over said distal portion of said annular surface of said shaft.
4. The invention of Claim 1 wherein said abrading means comprises an abrasive coating applied to said distal portion of said annular surface of said shaft.
5. An improved orthopaedic guide wire comprising an elongate shaft, said shaft having a distal drilling tip and a substantially annular surface over the length of said shaft, a distal portion of said annular surface which juxtaposes said tip exhibiting abrading means for abrading osseous tissue adjacent to said distal portion.
6. The invention of Claim 5 wherein said abrading means comprises a plurality of knurl nodes formed over said distal portion of said annular surface of said pin.
7. The invention of Claim 5 wherein said abrading means comprises etched surface irregularities dispersed over said distal portion of said annular surface of said shaft.
8. The invention of Claim 5 wherein said abrading means comprises an abrasive coating applied to said distal portion of said annular surface of said shaft.
9. A method for fracture fixation using an orthopaedic pin comprising the steps of: selecting an orthopaedic pin, said pin comprising an elongate shaft, said shaft having a distal drilling tip and a substantially annular surface over the length of said shaft, a distal portion of said annular surface juxtaposing said tip exhibiting abrading means; using drill means, drilling said distal tip into the cortex of a recipient bone at an entry point and at a first trajectory relative to the surface of said cortex at said entry point; pivoting said pin to a second trajectory using said abrading means to abrade adjacent osseous tissue until a furrow in said bone is formed to permit orientation of said pin to said second trajectory; and advancing said pin along said second trajectory to a desired implantation position.
10. The method of Claim 9 wherein said abrading means comprises a plurality of knurl nodes formed over said distal portion of said annular surface of said pin.
11. The method of Claim 9 wherein said abrading means comprises etched surface irregularities dispersed over said distal portion of said annular surface of said shaft.
12. The method of Claim 9 wherein said abrading means comprises an abrasive coating applied to said distal portion of said annular surface of said shaft.
13. A method for percutaneous insertion of an orthopaedic guide wire comprising the steps of: selecting an orthopaedic guide wire, said guide wire comprising an elongate shaft, said shaft having a distal drilling tip and a substantially annular surface over the length of said shaft, a distal portion of said annular surface juxtaposing said tip exhibiting abrading means; using drill means, drilling said distal tip into the cortex of a recipient bone at an entry point and at a first trajectory relative to the surface of said cortex at said entry point; pivoting said guide wire to a second trajectory using said abrading means to abrade adjacent osseous tissue until a furrow in said bone is formed to permit orientation of said guide wire to said second trajectory; and advancing said guide wire along said second trajectory to a desired implantation position.
14. The method of Claim 13 wherein said abrading means comprises a plurality of knurl nodes formed over said distal portion of said annular surface of said guide wire.
15. The method of Claim 13 wherein said abrading means comprises etched surface irregularities dispersed over said distal portion of said annular surface of said shaft.
16. The method of Claim 13 wherein said abrading means comprises an abrasive coating applied to said distal portion of said annular surface of said shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU19260/95A AU1926095A (en) | 1994-02-18 | 1995-02-21 | Osseous pins and wires for fracture fixation and directional guide wires |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US19882394A | 1994-02-18 | 1994-02-18 | |
| US08/198,823 | 1994-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1995022290A1 true WO1995022290A1 (en) | 1995-08-24 |
Family
ID=22735011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1995/002180 WO1995022290A1 (en) | 1994-02-18 | 1995-02-21 | Osseous pins and wires for fracture fixation and directional guide wires |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU1926095A (en) |
| WO (1) | WO1995022290A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015003092A1 (en) * | 2013-07-03 | 2015-01-08 | Acumed Llc | Steerable fastener for bone |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3905080A (en) * | 1972-03-24 | 1975-09-16 | Buckbee Mears Co | Abrading devices |
| US4177524A (en) * | 1976-05-14 | 1979-12-11 | Pfaudler-Werke A.G. | Medical securement element with abrasive grains on thread surface |
| US4858603A (en) * | 1988-06-06 | 1989-08-22 | Johnson & Johnson Orthopaedics, Inc. | Bone pin |
| US4978350A (en) * | 1986-10-13 | 1990-12-18 | Jaquet Orthopedie S.A. | Transcutaneous pin for fixation of a bone part or fragment |
| US5055105A (en) * | 1989-10-11 | 1991-10-08 | Bowen & Company, Ltd. | Bone drill bit |
| US5201733A (en) * | 1992-01-21 | 1993-04-13 | Etheredge Iii James L | Method and apparatus for internal fixation of fractures |
-
1995
- 1995-02-21 WO PCT/US1995/002180 patent/WO1995022290A1/en active Application Filing
- 1995-02-21 AU AU19260/95A patent/AU1926095A/en not_active Abandoned
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3905080A (en) * | 1972-03-24 | 1975-09-16 | Buckbee Mears Co | Abrading devices |
| US4177524A (en) * | 1976-05-14 | 1979-12-11 | Pfaudler-Werke A.G. | Medical securement element with abrasive grains on thread surface |
| US4978350A (en) * | 1986-10-13 | 1990-12-18 | Jaquet Orthopedie S.A. | Transcutaneous pin for fixation of a bone part or fragment |
| US4858603A (en) * | 1988-06-06 | 1989-08-22 | Johnson & Johnson Orthopaedics, Inc. | Bone pin |
| US5055105A (en) * | 1989-10-11 | 1991-10-08 | Bowen & Company, Ltd. | Bone drill bit |
| US5201733A (en) * | 1992-01-21 | 1993-04-13 | Etheredge Iii James L | Method and apparatus for internal fixation of fractures |
Non-Patent Citations (1)
| Title |
|---|
| ORTHOPEDIC CATALOG, RICHARDS MFG. CO., MEMPHIS, TENN., 25 March 1975, p. 118. * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015003092A1 (en) * | 2013-07-03 | 2015-01-08 | Acumed Llc | Steerable fastener for bone |
| GB2530960A (en) * | 2013-07-03 | 2016-04-06 | Acute Innovations Llc | Steerable fastener for bone |
| US9848930B2 (en) | 2013-07-03 | 2017-12-26 | Acumed Llc | Steerable fastener for bone |
Also Published As
| Publication number | Publication date |
|---|---|
| AU1926095A (en) | 1995-09-04 |
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