WO2003068082B1 - Clamp assembly for an external fixation system - Google Patents

Clamp assembly for an external fixation system

Info

Publication number
WO2003068082B1
WO2003068082B1 PCT/US2003/004068 US0304068W WO03068082B1 WO 2003068082 B1 WO2003068082 B1 WO 2003068082B1 US 0304068 W US0304068 W US 0304068W WO 03068082 B1 WO03068082 B1 WO 03068082B1
Authority
WO
WIPO (PCT)
Prior art keywords
clamp
elongated
jaw
fastener
clamp member
Prior art date
Application number
PCT/US2003/004068
Other languages
French (fr)
Other versions
WO2003068082A1 (en
Inventor
Stephen B Walulik
Kirk J Bailey
Original Assignee
Ebi Lp
Stephen B Walulik
Kirk J Bailey
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 Ebi Lp, Stephen B Walulik, Kirk J Bailey filed Critical Ebi Lp
Priority to AU2003217371A priority Critical patent/AU2003217371A1/en
Priority to EP03713415A priority patent/EP1482845B1/en
Publication of WO2003068082A1 publication Critical patent/WO2003068082A1/en
Publication of WO2003068082B1 publication Critical patent/WO2003068082B1/en

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
    • A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
    • A61B17/64—Devices extending alongside the bones to be positioned
    • A61B17/6466—Devices extending alongside the bones to be positioned with pin-clamps movable along a solid connecting rod
    • 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
    • A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
    • A61B17/64—Devices extending alongside the bones to be positioned
    • A61B17/645—Devices extending alongside the bones to be positioned comprising a framework
    • 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
    • A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
    • A61B17/64—Devices extending alongside the bones to be positioned
    • A61B17/6491—Devices extending alongside the bones to be positioned allowing small-scale motion of bone ends
    • 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
    • A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
    • A61B17/66—Alignment, compression or distraction mechanisms
    • 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
    • A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
    • A61B17/62—Ring frames, i.e. devices extending around the bones to be positioned

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Medical Informatics (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Clamps And Clips (AREA)

Abstract

A clamp assembly (200) for an external fixation system includes a first clamp member (204) for engaging a first elongated member (48). The first clamp member includes a first jaw portion (232) and a second jaw portion (234). The first and second jaw portions at least partially defining a laterally extending channel for receiving the first elongated member (48). The first and second jaw portions or members are connected by a hinge portion. The first jaw member (232) includes a free end normally spaced apart from a free end of the second jaw (234) a distance less than a diameter of the first elongated member (48). The first clamp member is elastically deformable to receive the first elongated member between the free ends of the first and second jaw members and into the laterally extending channel.

Claims

AMENDED CLAIMS [received by the Internationa! Bureau on 17 September 2003 (17.09.03); original claims 1 -2 cancelled; new claims 3-21 added (5 pages)]
1. (Cancelled)
2. (Cancelled)
3. A clamp assembly of an external fixation system for connecting first and second elongated members, the clamp assembly comprising: a first clamp member for engaging the first elongated member, the first clamp member including a first jaw portion and a second jaw portion, the first and second jaw portions at least partially defining a laterally extending channel for receiving the first elongated member, the first and second jaw portions connected by a first hinge portion, the first jaw portion including a free end normally spaced apart from a free end of the second jaw a distance less than a diameter of the first elongated member; a second clamp member having first and second jaw portions at least partially defining a laterally extending channel for receiving a second elongated rod; and a fastener connecting the first and second clamp members, wherein rotation of the fastener in a first direction draws the first and second clamp members together, and wherein cooperating serrations on the first and second clamp members prevent relative rotation between the first and second clamp members.
4. The clamp assembly of claim 3, wherein further rotation of the fastener in the first direction draws together the first and second jaw portions of the first clamp member and the first and second jaw portions of the second clamp member.
26
5. The clamp assembly of claim 3, wherein the first hinge portion of the first clamp member is adapted to be resiliently deflected upon introduction of the first elongated rod into the laterally extending channel temporarily retaining the elongated rod into the channel.
6. The clamp assembly of claim 3, further comprising a second hinge portion resiliently connecting the first and second jaw portions of the second clamp member.
7. The clamp assembly of claim 6, wherein the fastener includes a head portion that is rotatably received within a countersunk portion of the first jaw of the first clamp member.
8. The clamp assembly of claim 3, further comprising a nut engaged to the fastener and matingly received in a countersunk portion of the first jaw portion of the second clamp member, such that the nut does not rotate relative to the second clamp member.
9. The clamp assembly of claim 8, wherein the nut includes a lip which prevents rotation of the second elongated rod upon tightening of the clamp assembly.
10. The clamp assembly of claim 3, further comprising a washer matingly received in an aperture of the first jaw portion of the first clamp member, such that the washer does not rotate relative to the first clamp member.
11. The clamp assembly of claim 10, wherein the washer includes a lip preventing rotation of first elongated rod upon tightening of the clamp assembly.
12. The clamp assembly of claim 3, wherein the second clamp member is adapted to receive a second elongated rod having a smaller diameter than a diameter of the first elongated rod.
13. The clamp assembly of claim 3, wherein rotating the fastener in a second direction draws the first and second clamp members together.
14. A clamp assembly of an external fixation system for connecting first and second elongated members, the clamp assembly comprising: a first clamp member for engaging the first elongated member, the first clamp member including a first jaw portion and a second jaw portion, the first and second jaw portions at least partially defining a laterally extending channel for receiving the first elongated member, the first and second jaw portions connected by a hinge portion, the first jaw portion including a free end normally spaced apart from a free end of the second jaw a distance less than a diameter of the first elongated member; a second clamp member having first and second jaw portions at least partially defining a laterally extending channel for receiving a second elongated rod; a fastener connecting the first and second clamp members, wherein rotation of the fastener in a first direction draws the first and second clamp members together; and a nut engaged to the fastener and matingly received in a countersunk portion of the first jaw portion of the second clamp member, such that the nut does not rotate relative to the second clamp member.
15. The clamp assembly of claim 14, wherein the nut includes a lip which prevents rotation of the second elongated rod upon tightening of the clamp assembly.
28
16. A clamp assembly of an external fixation system for connecting first and second elongated members, the clamp assembly comprising: a first clamp member for engaging the first elongated member, the first clamp member including a first jaw portion and a second jaw portion, the first and second jaw portions at least partially defining a laterally extending channel for receiving the first elongated member, the first and second jaw portions connected by a hinge portion, the first jaw portion including a free end normally spaced apart from a free end of the second jaw a distance less than a diameter of the first elongated member; a second clamp member having first and second jaw portions at least partially defining a laterally extending channel for receiving a second elongated rod; a fastener connecting the first and second clamp members, wherein rotation of the fastener in a first direction draws the first and second clamp members together, and a washer matingly received in an aperture of the first jaw portion of the first clamp member, such that the washer does not rotate relative to the first clamp member.
17. The clamp assembly of claim 16, wherein the washer includes a lip preventing rotation of first elongated rod upon tightening of the clamp assembly.
18. A method of securing the relative positions of a first elongated member and a second elongated member with a clamp assembly including first and second clamp members connected by a fastener and having cooperating serrations, the method comprising: engaging the first elongated member with the first clamp member; engaging the second elongated member with the second clamp member;
29 rotating the first clamp member relative to the second clamp member such that the first elongated member is at a desired orientation relative to the second elongated member; rotating the fastener about an axis of the fastener in a first direction; engaging the cooperating serrations to lock the first and second clamp members in the desired orientation ; and rotating the fastener about the axis of the fastener after engaging the cooperating serrations to prevent relative movement between the first elongated member and the first clamp member and between the second elongated member and the second clamp member.
19. The method of claim 18, further comprising engaging the fastener to a nut matingly received in the second clamp member while rotation of the nut relative to the second clamp member is prevented.
20. The method of claim 19, wherein engaging the fastener to the nut further comprises preventing rotation of the second elongated rod relative to the second clamp member.
21. The method of claim 20, further comprising preventing rotation of the first elongated member relative to the first clamp member after engaging the cooperating serrations.
30
PCT/US2003/004068 1999-10-21 2003-02-12 Clamp assembly for an external fixation system WO2003068082A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003217371A AU2003217371A1 (en) 2002-02-12 2003-02-12 Clamp assembly for an external fixation system
EP03713415A EP1482845B1 (en) 2002-02-12 2003-02-12 Clamp assembly for an external fixation system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/422,377 US6277119B1 (en) 1999-10-21 1999-10-21 External fixation system
US10/074,329 US6702814B2 (en) 1999-10-21 2002-02-12 Clamp assembly for an external fixation system
US10/074,329 2002-02-12

Publications (2)

Publication Number Publication Date
WO2003068082A1 WO2003068082A1 (en) 2003-08-21
WO2003068082B1 true WO2003068082B1 (en) 2005-01-20

Family

ID=29272547

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2000/028981 WO2001028441A1 (en) 1999-10-21 2000-10-20 External fixation system
PCT/US2003/004068 WO2003068082A1 (en) 1999-10-21 2003-02-12 Clamp assembly for an external fixation system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/US2000/028981 WO2001028441A1 (en) 1999-10-21 2000-10-20 External fixation system

Country Status (5)

Country Link
US (2) US6277119B1 (en)
EP (1) EP1229846B1 (en)
JP (1) JP2003511192A (en)
AU (1) AU1217801A (en)
WO (2) WO2001028441A1 (en)

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US20020151892A1 (en) 2002-10-17
EP1229846A4 (en) 2003-02-05
US6702814B2 (en) 2004-03-09
EP1229846B1 (en) 2012-01-11
US6277119B1 (en) 2001-08-21
WO2001028441A1 (en) 2001-04-26
JP2003511192A (en) 2003-03-25
EP1229846A1 (en) 2002-08-14
WO2003068082A1 (en) 2003-08-21
AU1217801A (en) 2001-04-30

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