CA2508172A1 - Bone fracture fixation systems with both multidirectional and unidirectional stabilization pegs - Google Patents

Bone fracture fixation systems with both multidirectional and unidirectional stabilization pegs Download PDF

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Publication number
CA2508172A1
CA2508172A1 CA002508172A CA2508172A CA2508172A1 CA 2508172 A1 CA2508172 A1 CA 2508172A1 CA 002508172 A CA002508172 A CA 002508172A CA 2508172 A CA2508172 A CA 2508172A CA 2508172 A1 CA2508172 A1 CA 2508172A1
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CA
Canada
Prior art keywords
peg
head
hole
kit according
shaft
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002508172A
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French (fr)
Other versions
CA2508172C (en
Inventor
Jorge L. Orbay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Biomet CV USA
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Individual
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Filing date
Publication date
Priority claimed from US09/495,854 external-priority patent/US6358250B1/en
Priority claimed from US09/735,228 external-priority patent/US6440135B2/en
Priority claimed from US10/159,612 external-priority patent/US6767351B2/en
Priority claimed from US10/159,611 external-priority patent/US6730090B2/en
Application filed by Individual filed Critical Individual
Publication of CA2508172A1 publication Critical patent/CA2508172A1/en
Application granted granted Critical
Publication of CA2508172C publication Critical patent/CA2508172C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
    • A61B17/8042—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers the additional component being a cover over the screw head
    • 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
    • A61B17/56—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
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
    • 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
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A61B17/1728—Guides or aligning means for drills, mills, pins or wires for holes for bone plates or plate screws
    • 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
    • A61B17/72—Intramedullary pins, nails or other devices
    • 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
    • A61B17/72—Intramedullary pins, nails or other devices
    • A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
    • 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
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
    • A61B17/8047—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers wherein the additional element surrounds the screw head in the plate hole
    • 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
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
    • 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
    • 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
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8605—Heads, i.e. proximal ends projecting from bone
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S606/00—Surgery
    • Y10S606/902—Cortical plate specifically adapted for a particular bone

Abstract

A fixation system includes a device (300) having a plurality of like threaded peg holes (308). Two types of pegs (140, 160) are couplable within the peg holes (308). One type (160) is multidirectional, and the shaft (164) can be oriented at various angles relative to an axis extending through the peg hole (308). Another peg (140) is directionally-fixed and limited to extension through the peg hole (308) in a single direction; i.e., coaxial with the peg hole axis. The peg holes (308) and both types of pegs (140, 160) are adapted such that either of the pegs (140, 160) can be received within any of the peg holes (308) of the device (300).

Claims (40)

1. A fracture fixation system, comprising:
a) a fracture fixation device defining at least one peg hole, said peg hole having an upper portion provided with an internal thread, and a lower portion having a substantially spherically concave surface;
b) a first peg having a head and a shaft, said head including a first portion having an external thread adapted to thread with said internal thread, a second portion having a substantially spherically convex surface corresponding to said substantially spherically concave surface, and means for receiving a rotational driver;
c) a second peg having a head and a shaft, said head including a first portion defining a cup and having a substantially spherically convex surface corresponding to said substantially spherically concave surface; and d) a cap having an external thread adapted to thread with said internal thread, means for receiving a rotational driver, and an element sized to be received within said cup of said second peg.
2. A fracture fixation system according to claim 1, wherein:
at least one of said substantially spherically concave surface of said device, said substantially spherically convex surface of said first peg and said substantially spherically convex surface of said second peg is provided with a relatively high coefficient of friction.
3. A fracture fixation system according to claim 1, wherein:
one of said shaft of said first peg and said shaft of said second peg is non-threaded.
4. A fracture fixation system according to claim 1, wherein:
said fixation device is a plate device.
5. A fracture fixation system according to claim 4, wherein:
said plate device is a volar plate.
6. A fracture fixation system according to claim 1, wherein:
said fixation device is a nail-plate device.
7. A fracture fixation system according to claim 1, wherein:
said fixation device includes a plurality of peg holes.
8. A fracture fixation system according to claim 1, wherein:
said cup of said second peg includes a surface area, and said element of said cap includes a protuberance adapted to define a substantially small contact area relative to said surface area of said cup.
9. A fracture fixation system according to claim 1, wherein:
said a cap comprises a base and a set screw, said base includes said external thread adapted to thread with said internal thread of said at least one peg hole, an internal thread, and said means for receiving a rotational driver, and said set screw includes an external thread adapted to thread with said internal thread of said base, a second means for receiving a rotational driver, and said element.
10. A fracture fixation system according to claim 1, wherein:
said external thread of said base has a first pitch, said external thread of said set screw has a second pitch, and said first pitch is greater than said second pitch.
11. A fracture fixation system according to claim 1, wherein:
said cup of said second peg defines means for receiving a rotational driver.
12. A fracture fixation system according to claim 1, wherein:
said at least one peg hole includes first and second peg holes, said first peg hole defines a first axis and said second peg hole defines a second axis, wherein said first peg is coupled within said first peg hole in alignment with said first axis, and said second peg is coupled within said second peg hole at an angle relative to said second axis.
13. A fracture fixation system according to claim 12, wherein:
said first and second axes are parallel.
14. A fracture fixation system according to claim 12, wherein:
said angle is within a range of ~15° relative to said second axis.
15. A kit for a fracture fixation system, comprising:
a) a fracture fixation device defining at least first and second like peg holes, each said peg hole having an upper portion provided with an internal thread;
b) a first peg couplable within at least said first peg hole, said first peg having a head and a shaft, said head having an external thread engagable with said internal thread, means for receiving a rotational driver;
c) a second peg couplable within at least said second peg hole, said second peg having a head and a shaft; and d) a cap having an external thread that is engagable with said internal thread of said second peg hole and means for receiving a rotational driver.
16. A kit according to claim 15, wherein:
said cap includes an element for engagement with said head of said second peg to angularly fix said head of said second peg within said second peg hole
17. A kit according to claim 16, wherein:
said element is adapted to clamp against said head of said second peg to provide said angular fixation.
18. A kit according to claim 16, wherein:
said cup of said second peg includes a surface area, and said element of said cap includes a protuberance adapted to define a substantially small contact area relative to said surface area of said cup.
19. A kit according to claim 15, wherein:
said a cap comprises a base and a set screw, said base includes said external thread adapted to thread with said internal thread of said at least one peg hole, an internal thread, and said means for receiving a rotational driver, and said set screw includes an external thread adapted to thread with said internal thread of said base, a second means for receiving a rotational driver, and said element.
20. A kit according to claim 19, wherein:
said external thread of said base has a first pitch, said external thread of said set screw has a second pitch, and said first pitch is greater than said second pitch.
21. A kit according to claim 15, wherein:
said head of said second peg defines a cup having means for receiving a rotational driver.
22. A kit according to claim 15, wherein:
said head of said second peg defines a concave surface, and said element has a spherically-curved convex surface corresponding to said concave surface.
23. A kit according to claim 15, wherein:
said first peg hole includes a lower portion having a substantially spherically concave surface, said first peg includes a portion having a substantially spherically convex surface corresponding to said spherically concave surface, said substantially spherically concave surface and said substantially spherically convex portion intended for contact with each other.
24. A kit according to claim 15, wherein:
said shaft of said first peg is non-threaded.
25. A kit according to claim 15, wherein:
said shaft of said second peg is non-threaded.
26. A kit according to claim 25, wherein:
said second peg includes means for receiving a rotational driver.
27. A kit according to claim 15, wherein:
said fixation device is a plate.
28. A kit according to claim 15, wherein:
said fixation device is nail-plate.
29. A kit according to claim 15, wherein:
when said first and second pegs are fixed within said at least first and second peg holes, said first and second pegs are collectively oriented to provide a framework for supporting fractured bone fragments, said first and second pegs of said framework defining a plurality of non-parallel axes.
30. A kit according to claim 15, wherein:
said at least first and second peg holes includes at least three peg holes closely spaced in a linear or curvilinear arrangement.
31. A kit according to claim 15, wherein:
said fixation device includes a plate portion defining said at least first and second peg holes.
32. A kit according to claim 31, wherein:
said plate element has a body portion and a head portion angled relative said body portion, said head portion defining said at least first and second peg holes.
33. A kit according to claim 31, wherein:
said fixation device also includes a nail portion extending from said plate portion.
34. A kit according to claim 15, wherein:
said fixation device includes at least one non-threaded screw hole.
35. A peg for use in a threaded peg hole in a fracture fixation device, comprising:
a head and a shaft, said head including a proximal portion having an external thread, a distal portion having a substantially spherically convex surface, and means for receiving a rotational driver.
36. A peg according to claim 35, wherein:
said shaft is non-threaded.
37. A peg system for use in a fracture fixation device, comprising:
a) a peg having a non-threaded head and a non-threaded shaft, said head defining a proximal cup provided with means for receiving a rotational driver and a distal portion having a substantially spherically convex surface; and b) a cap having an external thread, means for receiving a rotational driver, and a protuberance adapted to engage within said proximal cup of said peg.
38. A method of treating a bone fracture, comprising:
a) providing a fixation device having a plurality of like threaded peg holes, each of said peg holes defining an axis;
b) positioning the fixation device over the bone fracture;
c) drilling holes through the peg holes into the bone, wherein a first of the drilled holes is drilled substantially coaxial with the axis through a peg hole, and a second of the drilled holes is drilled at an angle relative to the axis through a peg hole;
d) providing a first peg having a threaded head and a shaft;
e) inserting said first peg through one of the peg holes such that the shaft of the first peg extends into the first drilled hole;
f) providing a second peg and a discrete cap, said second peg having a head and a shaft, and said cap having an external thread;
g) inserting the second peg through another of the peg holes such that the shaft of the second peg extends through the second drilled hole; and h) threadably engaging the cap in the other of the peg holes until a portion of the cap engages the head of the second peg.
39. A method according to claim 38, wherein:
said threadably engaging the cap causes clamping of the head of the second peg between the cap and the fixation device.
40. A method according to claim 38, wherein:
said providing said second peg and a discrete cap includes providing said second peg with a non-threaded shaft.
CA2508172A 2000-02-01 2003-11-21 Bone fracture fixation systems with both multidirectional and unidirectional stabilization pegs Expired - Fee Related CA2508172C (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US09/495,854 US6358250B1 (en) 2000-02-01 2000-02-01 Volar fixation system
US09/524,058 US6364882B1 (en) 2000-02-01 2000-03-13 Volar fixation system
US09/735,228 US6440135B2 (en) 2000-02-01 2000-12-12 Volar fixation system with articulating stabilization pegs
US10/159,612 US6767351B2 (en) 2000-02-01 2002-05-30 Fixation system with multidirectional stabilization pegs
US10/159,611 US6730090B2 (en) 2000-02-01 2002-05-30 Fixation device for metaphyseal long bone fractures
US10/307,796 US6893444B2 (en) 2000-02-01 2002-12-02 Bone fracture fixation systems with both multidirectional and unidirectional stabilization pegs
US10/307,796 2002-12-02
PCT/US2003/037313 WO2004049903A2 (en) 2000-02-01 2003-11-21 Bone fracture fixation systems with both multidirectional and unidirectional stabilization pegs

Publications (2)

Publication Number Publication Date
CA2508172A1 true CA2508172A1 (en) 2004-06-17
CA2508172C CA2508172C (en) 2012-04-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2508172A Expired - Fee Related CA2508172C (en) 2000-02-01 2003-11-21 Bone fracture fixation systems with both multidirectional and unidirectional stabilization pegs

Country Status (6)

Country Link
US (2) US6893444B2 (en)
EP (1) EP1567072A4 (en)
JP (1) JP4558501B2 (en)
AU (1) AU2003294435B2 (en)
CA (1) CA2508172C (en)
WO (1) WO2004049903A2 (en)

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