WO2000012035A1 - Device for aligning fractured bone - Google Patents

Device for aligning fractured bone Download PDF

Info

Publication number
WO2000012035A1
WO2000012035A1 PCT/CA1999/000780 CA9900780W WO0012035A1 WO 2000012035 A1 WO2000012035 A1 WO 2000012035A1 CA 9900780 W CA9900780 W CA 9900780W WO 0012035 A1 WO0012035 A1 WO 0012035A1
Authority
WO
WIPO (PCT)
Prior art keywords
limb
cylindrical
slidable
handle
engaging component
Prior art date
Application number
PCT/CA1999/000780
Other languages
French (fr)
Inventor
Fergus Ducharme
Original Assignee
Bricol Marketing Ltd.
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 Bricol Marketing Ltd. filed Critical Bricol Marketing Ltd.
Priority to AU53672/99A priority Critical patent/AU5367299A/en
Publication of WO2000012035A1 publication Critical patent/WO2000012035A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
    • A61F5/04—Devices for stretching or reducing fractured limbs; Devices for distractions; Splints
    • 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
    • A61B17/1703—Guides or aligning means for drills, mills, pins or wires using imaging means, e.g. by X-rays
    • 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
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8866—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices for gripping or pushing bones, e.g. approximators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831—Material properties
    • A61B2017/00902—Material properties transparent or translucent

Definitions

  • This invention relates to the field of devices for the alignment of fractured long bones, and particularly to the alignment of closed fractures.
  • the fractured bone alignment device of the present invention provides an instrument that will withstand the forces applied to achieve positioning of the bone fragments in preparation for intramedullary nailing.
  • the elongated handle of this device allows the treating surgeon to stand outside the field of radiation when said device is used in conjunction with image intensification or X-ray.
  • the device can be rotated on different aspects of the fractured limb, allowing the manipulation of said limb from many different angles.
  • the radiolucent version of the present invention allows the treating surgeon to maintain constant visual contact with the bone fragments during the alignment procedure.
  • the fractured bone alignment device of this invention is simple in design, consisting solely of two rugged components which are easily and inexpensively constructed. Said components are readily washed free of blood and other body fluids and are easily sterilized and stored. Further advantages of the present invention are its ease of use and efficiency of operation.
  • An embodiment of the device of the present invention comprises an L-shaped limb and slidable cylindrical locking member support and a slidable locking cylindrical limb engaging member.
  • the L-shaped limb and slidable cylindrical locking member support is comprised of an elongated angled member which serves both as a handle for manipulating the device and for retaining and locking the slidable cylindrical limb engaging member, and a shorter, fixed perpendicular cylindrical limb- engaging component.
  • One end of the slidable cylindrical limb engaging component has an angled aperture defining an angled opening for mounting on the elongated handle.
  • the inner rectangular or square cross- section defines an opening very slightly larger than the outer cross- section of the handle of the L-shaped limb and slidable cylindrical locking member support.
  • This very slightly larger cross-section allows the cylindrical sliding member to move along the length of said handle relative to the fixed cylindrical limb engaging member of the L-shaped limb and locking member support when exactly perpendicular thereto but to lock on the locking member support when not perpendicular thereto. Movement of the slidable limb engaging member having a cylindrical cross-section occurs in the same plane and on the same side of said handle as the fixed perpendicular cylindrical limb engaging member of the L-shaped limb and locking member support.
  • the limb engaging members were rectangular or square in cross-section.
  • Use of the device with limb engaging members having a square or rectangular cross-section resulted in some cases in traumatization of the healthy tissue when force was applied on the limb engaging members to align the bones.
  • a change in the cross-section of the limb engaging members to a cylindrical cross-section has resulted in less damage to the healthy tissue of the limb.
  • Alternate embodiments of the present invention include the above device constructed of 3/4" rectangular steel or radiolucent plastic material for the handle and the opening of the slidable cylindrical limb engaging component. Both the fixed and sliding limb engaging components have a cylindrical cross-section. Radiolucent plastic material is preferred as it enables the surgeon to maintain constant visual contact with the image of the bones during the alignment procedure.
  • Figure I is a perspective view of the L-shaped limb and locking member support, consisting of an elongated angled handle component and a shorter, perpendicular cylindrical limb-engaging component.
  • Figure 2 is a perspective view of the sliding locking member of the present invention, comprising a cylindrical limb-engaging locking member having an aperture defining an angled opening at one end.
  • Figure 3 is a perspective view of a preferred embodiment of the present invention showing the cylindrical limb engaging and locking member mounted on the L-shaped limb and handle and locking member support.
  • Figure 4 is a view of a lower limb with a single fracture in the femur, yielding two bone portions.
  • Figure 5 is a perspective view of a preferred embodiment of the present invention, shown in operative configuration with a fractured lower limb.
  • Figure 6 is a view of a fractured lower limb following manipulation with the present invention, yielding alignment of the two portions of bone.
  • the invention is comprised of an L-shaped limb and locking member support 1 and a slidable locking member 2.
  • the device is comprised of an L-shaped limb and locking member support 1 comprised of an elongated angled handle I0 and a shorter fixed perpendicular cylindrical limb-engaging component 20.
  • the slidable locking member 2 is comprised of a cylindrical limb engaging section 30 integrally connected to a locking device 31 having an aperture defining an angled opening 32 proximate one end.
  • the slidable locking member 2 is mounted on the limb and locking member 1 by sliding the angled opening 32 of the slidable locking member 2 perpendicularly up or down the elongated handle component 10 which has a matching angled cross-section of slightly smaller exterior dimension for sliding movement of slidable locking member 2 relative to elongated handle component 10.
  • the aperture defining the angled opening 32 of slidable locking member 2 is slightly greater than the outer dimensions of the angled cross-section of the elongated handle 10 of L- shaped limb and locking member support 1.
  • the slidable locking member 2 is received on the elongated handle component 10 having an angled cross-section of the L-shaped limb and locking member support and is able to move upwardly and downwardly along the length of said elongated handle 10 relative to the fixed perpendicular cylindrical limb engaging component 20.
  • the device is shown as used to set a femur shown as having one fracture providing bone portions 40a and 40b.
  • the fractured limb is engaged between the fixed cylindrical limb engaging component 20 of L-shaped limb and locking support 1 and the cylindrical portion 30 of the slidable cylindrical limb engaging member 2.
  • Said slidable cylindrical limb engaging and locking member 2 is moved into a position directly adjacent to the surface of the fractured limb by sliding the member 2 perpendicularly along the elongated angled handle 10. Positive force is applied to said elongated angled handle 10 by grasping it outside the range of irradiation.

Abstract

A fractured bone alignment device comprising an L-shaped limb and slidable cylindrical limb engaging member support, a slidable locking cylindrical limb engaging member, the L-shaped limb and slidable cylindrical limb engaging member support comprised of an elongated handle having an angled cross-section with a shorter fixed perpendicular cylindrical limb-engaging component located at the top of the elongated handle, the slidable cylindrical limb engaging component having a locking device with an aperture defining an opening at one end with the cross-section of the aperture corresponding in shape but having slightly larger dimensions than the angled cross-section of the elongated handle, said opening defining an aperture in one end of the slidable cylindrical limb engaging component which is mounted on said elongated handle for movement of said sliding member along the length of said handle relative to said perpendicular fixed limb engaging component of the L-shaped limb and slidable cylindrical locking member support in the same plane and on the same side of said handle as the fixed perpendicular limb engaging component, said opening and slidable cylindrical limb engaging component locking on said elongated handle when not perpendicular thereto.

Description

DEVICE FOR ALIGNING FRACTURED BONE
Technical Field This invention relates to the field of devices for the alignment of fractured long bones, and particularly to the alignment of closed fractures.
Background of the Invention
The alignment of closed fractures of long bones often requires the treating surgeon to rely on X-ray images to achieve the optimal positioning of the fractured fragments of bone. Physical manipulation of the fractured limb may require the application of a significant amount of force as well as the exposure of the operator's hands to irradiation. Protection of the operator from such exposure, as well as the ability to perform such manipulation from a number of different angles and to maintain observation of the fractured bone fragments during the process of alignment are desirable.
The fractured bone alignment device of the present invention provides an instrument that will withstand the forces applied to achieve positioning of the bone fragments in preparation for intramedullary nailing. The elongated handle of this device allows the treating surgeon to stand outside the field of radiation when said device is used in conjunction with image intensification or X-ray. The device can be rotated on different aspects of the fractured limb, allowing the manipulation of said limb from many different angles. The radiolucent version of the present invention allows the treating surgeon to maintain constant visual contact with the bone fragments during the alignment procedure.
In addition, the fractured bone alignment device of this invention is simple in design, consisting solely of two rugged components which are easily and inexpensively constructed. Said components are readily washed free of blood and other body fluids and are easily sterilized and stored. Further advantages of the present invention are its ease of use and efficiency of operation.
Summary of the Invention
An embodiment of the device of the present invention comprises an L-shaped limb and slidable cylindrical locking member support and a slidable locking cylindrical limb engaging member. The L-shaped limb and slidable cylindrical locking member support is comprised of an elongated angled member which serves both as a handle for manipulating the device and for retaining and locking the slidable cylindrical limb engaging member, and a shorter, fixed perpendicular cylindrical limb- engaging component. One end of the slidable cylindrical limb engaging component has an angled aperture defining an angled opening for mounting on the elongated handle. The inner rectangular or square cross- section defines an opening very slightly larger than the outer cross- section of the handle of the L-shaped limb and slidable cylindrical locking member support. This very slightly larger cross-section allows the cylindrical sliding member to move along the length of said handle relative to the fixed cylindrical limb engaging member of the L-shaped limb and locking member support when exactly perpendicular thereto but to lock on the locking member support when not perpendicular thereto. Movement of the slidable limb engaging member having a cylindrical cross-section occurs in the same plane and on the same side of said handle as the fixed perpendicular cylindrical limb engaging member of the L-shaped limb and locking member support. When a fractured limb is engaged in the device and positive pressure is applied to said handle, pressure on the cylindrical sliding member located on the limb locks the cylindrical sliding member in a fixed position on the handle of the limb and locking member support which holds the device in a fixed position during alignment of fractured bone fragments.
In an earlier version of the device described in Canadian Patent Application Number 2,085,057-4 published June 1 1 , 1994 the limb engaging members were rectangular or square in cross-section. Use of the device with limb engaging members having a square or rectangular cross-section resulted in some cases in traumatization of the healthy tissue when force was applied on the limb engaging members to align the bones. A change in the cross-section of the limb engaging members to a cylindrical cross-section has resulted in less damage to the healthy tissue of the limb.
Alternate embodiments of the present invention include the above device constructed of 3/4" rectangular steel or radiolucent plastic material for the handle and the opening of the slidable cylindrical limb engaging component. Both the fixed and sliding limb engaging components have a cylindrical cross-section. Radiolucent plastic material is preferred as it enables the surgeon to maintain constant visual contact with the image of the bones during the alignment procedure.
Brief Description of the Drawings
Figure I is a perspective view of the L-shaped limb and locking member support, consisting of an elongated angled handle component and a shorter, perpendicular cylindrical limb-engaging component. Figure 2 is a perspective view of the sliding locking member of the present invention, comprising a cylindrical limb-engaging locking member having an aperture defining an angled opening at one end.
Figure 3 is a perspective view of a preferred embodiment of the present invention showing the cylindrical limb engaging and locking member mounted on the L-shaped limb and handle and locking member support.
Figure 4 is a view of a lower limb with a single fracture in the femur, yielding two bone portions.
Figure 5 is a perspective view of a preferred embodiment of the present invention, shown in operative configuration with a fractured lower limb.
Figure 6 is a view of a fractured lower limb following manipulation with the present invention, yielding alignment of the two portions of bone.
Detailed Description of the Invention
Referring to Figure 3, the invention is comprised of an L-shaped limb and locking member support 1 and a slidable locking member 2.
Referring to Figure I, the device is comprised of an L-shaped limb and locking member support 1 comprised of an elongated angled handle I0 and a shorter fixed perpendicular cylindrical limb-engaging component 20.
Referring to Figure 2, the slidable locking member 2 is comprised of a cylindrical limb engaging section 30 integrally connected to a locking device 31 having an aperture defining an angled opening 32 proximate one end. The slidable locking member 2 is mounted on the limb and locking member 1 by sliding the angled opening 32 of the slidable locking member 2 perpendicularly up or down the elongated handle component 10 which has a matching angled cross-section of slightly smaller exterior dimension for sliding movement of slidable locking member 2 relative to elongated handle component 10. The aperture defining the angled opening 32 of slidable locking member 2 is slightly greater than the outer dimensions of the angled cross-section of the elongated handle 10 of L- shaped limb and locking member support 1. Referring to Figure 3, the slidable locking member 2 is received on the elongated handle component 10 having an angled cross-section of the L-shaped limb and locking member support and is able to move upwardly and downwardly along the length of said elongated handle 10 relative to the fixed perpendicular cylindrical limb engaging component 20.
Referring to Figures 4, 5 and 6, the device is shown as used to set a femur shown as having one fracture providing bone portions 40a and 40b. The fractured limb is engaged between the fixed cylindrical limb engaging component 20 of L-shaped limb and locking support 1 and the cylindrical portion 30 of the slidable cylindrical limb engaging member 2. Said slidable cylindrical limb engaging and locking member 2 is moved into a position directly adjacent to the surface of the fractured limb by sliding the member 2 perpendicularly along the elongated angled handle 10. Positive force is applied to said elongated angled handle 10 by grasping it outside the range of irradiation. The resulting pressure on the cylindrical slidable locking member 2 produces an angle which locks the slidable limb engaging locking member 2 firmly in place on the handle 10 so long as pressure is maintained on the elongated angled handle 10. Through skilled manipulation of the sliding-lock device the portions of bone 40a, 40b are brought into alignment.

Claims

1. A fractured bone alignment device comprising: an L-shaped limb and slidable cylindrical limb engaging member support, a slidable locking cylindrical limb engaging member, the L-shaped limb and slidable cylindrical limb engaging member support comprised of an elongated handle having an angled cross-section with a shorter fixed perpendicular cylindrical limb-engaging component located at the top of the elongated handle, the slidable cylindrical limb engaging component having a locking device with an aperture defining an opening at one end with the cross- section of the aperture corresponding in shape but having slightly larger dimensions than the angled cross-section of the elongated handle, said opening defining an aperture in one end of the slidable cylindrical limb engaging component is mounted on said elongated handle for movement of said sliding member along the length of said handle relative to said perpendicular fixed limb engaging component of the L- shaped limb and slidable cylindrical locking member support in the same plane and on the same side of said handle as the fixed perpendicular limb engaging component, said opening and slidable cylindrical limb engaging component locking on said elongated handle when not perpendicular thereto.
2. The device according to claim I constructed of 3/4" rectangular stainless steel tubing and % diameter cylindrical stainless steel tubing.
3. The device according to claim I constructed of radiolucent plastic.
PCT/CA1999/000780 1998-08-27 1999-08-27 Device for aligning fractured bone WO2000012035A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU53672/99A AU5367299A (en) 1998-08-27 1999-08-27 Device for aligning fractured bone

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14162698A 1998-08-27 1998-08-27
US09/141,626 1998-08-27

Publications (1)

Publication Number Publication Date
WO2000012035A1 true WO2000012035A1 (en) 2000-03-09

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ID=22496492

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1999/000780 WO2000012035A1 (en) 1998-08-27 1999-08-27 Device for aligning fractured bone

Country Status (2)

Country Link
AU (1) AU5367299A (en)
WO (1) WO2000012035A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1296019C (en) * 2005-02-05 2007-01-24 浙江大学 Position-regulatable external pressure fixator for reating kneecap fracture without wound

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2085057A1 (en) 1992-12-10 1994-06-11 Fergus A. Ducharme Device for aligning fractured bone
US5733291A (en) * 1996-10-10 1998-03-31 Hayes Medical, Incorporated Long bone alignment tool

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2085057A1 (en) 1992-12-10 1994-06-11 Fergus A. Ducharme Device for aligning fractured bone
US5733291A (en) * 1996-10-10 1998-03-31 Hayes Medical, Incorporated Long bone alignment tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1296019C (en) * 2005-02-05 2007-01-24 浙江大学 Position-regulatable external pressure fixator for reating kneecap fracture without wound

Also Published As

Publication number Publication date
AU5367299A (en) 2000-03-21

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