CA1185855A - Surgical strut for treatment of the back-bone - Google Patents

Surgical strut for treatment of the back-bone

Info

Publication number
CA1185855A
CA1185855A CA000418803A CA418803A CA1185855A CA 1185855 A CA1185855 A CA 1185855A CA 000418803 A CA000418803 A CA 000418803A CA 418803 A CA418803 A CA 418803A CA 1185855 A CA1185855 A CA 1185855A
Authority
CA
Canada
Prior art keywords
rod
sleeve
hook
surgical
recesses
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.)
Expired
Application number
CA000418803A
Other languages
French (fr)
Inventor
Kazimierz Bacal
Lech B. Wierusz
Stanislaw J. Kossek
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.)
WYZSZA SZKOLA INZYNIERSKA IM JURIJA GAGARINA
Original Assignee
WYZSZA SZKOLA INZYNIERSKA IM JURIJA GAGARINA
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 WYZSZA SZKOLA INZYNIERSKA IM JURIJA GAGARINA filed Critical WYZSZA SZKOLA INZYNIERSKA IM JURIJA GAGARINA
Application granted granted Critical
Publication of CA1185855A publication Critical patent/CA1185855A/en
Expired legal-status Critical Current

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
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • 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
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
    • A61B17/7005—Parts of the longitudinal elements, e.g. their ends, being specially adapted to fit in the screw or hook heads
    • 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
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
    • A61B17/7008—Longitudinal elements, e.g. rods with a cross-section which varies along its length with parts of, or attached to, the longitudinal elements, bearing against an outside of the screw or hook heads, e.g. nuts on threaded rods
    • 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
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7056—Hooks with specially-designed bone-contacting part

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Neurology (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)

Abstract

ABSTRACT OF THE DISCLOSURE:
A surgical strut for the treatment of a back-bone, comprising a rod having a circular cross-section, and a thrust pin provided on the rod and protruding at one side therefrom. A sleeve is mounted on the rod, this sleeve having a longitudinal cut provided with skew recesses which constitute a bearing surface for the pin. One end of said sleeve, closer to one end of said rod, has an outer surface in the form of a cone. A hook having a conical bore is mounted on said conical outer surface of said sleeve.

Description

Sue The present invention relates to a surgical strut for treatment of the back-bone.
In particular, the present invention relates to a surgical strut for the treatment of scoliotic and kyphotic spinal curvatures and the treatment of post-traumatic cases appearing mainly in the lumbar segment of the back-bone.
The treatment of spinal curvatures is realized through an operation consisting in tensioning the back-bone and holding it in the state of prolonged stress over a period of at least a dozen or so months. For this therapy goner-ally known distracters and struts with hook catches are applied. For the post-traumatic treatment of the back-bone in its lumber segment toothed metal plates serving for stabilization of this segment are used Distracters are built of a rod having a circular cross-section provided at one end with conical-cylindrical steps serving for hitching the pectoral hook in a core-pounding distance from the lumbar hook attached at the other end of the rod The disadvantage of distracters is a difficult and labour-consuming technology and low elasticity which causes their breaking in the patient's organism.
Surgical struts according to the Polish patent no. 96695 issued on August 15, 1977 and published on October I 1978 are also made of a circular rod provided Jo at one end with several radial grooves serving for fitting a stopper ring whereupon the pectoral hook rests. The lumbar hook is attached on the other end of the strut.
Surgical struts according to the German Patent Application No. 31 26 182.5 published on April 1, 1982 are made, like the previous ones, of a rod having a circular cross-section and hooks attached to it. The rod has on one end a number of through holes perpendicular to its axis and serving for fitting a pin, whereas one of the hooks has from the side of the front face in the wall of the circular hole recesses I,, 3L~l8S855 constituting seats for the mounted pin. The disadvantage of both described surgical struts is the existence of a dimensionally small stopper element in a form of a ring or a pin, whose mounting is a hindrance for the course of a surgical operation.
The toothed plate applied for stabilization of injured vertebrae is provided with two double arms with externally sparsely disposed teeth fixed on spoons pro-cusses of vertebrae. The toothed plates do not give the possibility of setting the proper position of injured vertebrae and at bending their arms during fixing them on spoons processes they cut them down, thus weakening the stabilization of vertebrae.
An object of the invention is to avoid the inconveniences of the known distracters, struts and toothed plates and the task consists in working out the design of the surgical strut suitable hot for the treatment of curvatures and post-traumatic cases of the back-bone, simple in the realization, showing high elasticity and fatigue strength, as well as enabling its easy fitting in the patient's organism, with simultaneous protection against loosening the stopper elements.
According to the present invention, there is provided a surgical strut for the treatment of a back-bone, US comprising a rod having a circular cross-section, thrust pin provided on said rod and protruding at one side therefrom, a sleeve mounted on said rod, said sleeve having a longitudinal cut provided with skew recesses which constitute a bearing surface for said pin one end of said sleeve closer to one end of said rod, having an outer surface in the form of a cone, and a hook having a conical bore mounted on said conical outer surface of said sleeve.
Preferably, the thrust pin is fixed to said rod ! - 2 5i~55 at a distance from the extremity ox said one end equal to the sum of the length of the sleeve and the height of the hook.
Preferably the sleeve and the hook (pectoral) are mounted at the same end of the rod. At the other end of the rod a lumbar hook of a known design may be mounted.
Mounting the conical surface of the pectoral hook on the conical surface of the sleeve causes their automatic stiffening in relation to the rod of the strut, thus securing their free rotation within the limits of the recesses of the sleeve and hindering an uncontrolling change of the position of the hook.
The application of the stopper sleeve in the design of the struts simplifies technologically their pro-diction.
The surgical strut according to the invention is characterized by high fatigue strength, enables easy and quick adjustment of the position of the hook, due to which accelerates the course of the operation. Numerous recesses on the stopper sleeve which are situated on one side of its cut or alternately on both sides of the said cut contribute to the fact that the number of particular steps of the length of struts in a dimensional set is four times smaller in relation to the number of steps of the length of the I known struts.
preferred embodiment of the surgical strut according to the invention will now be described, as example without limitative manner, having reference the accompanying drawings wherein:
I fig. 1 presents the side view of the strut, fig. 2 presents the rear view of the strut, fig. 3 presents the half-section of the fragment of the strut with the rod and the pin and the mounted sleeve.

The strut is made of a rod 1 having a circular cross-section provided with a thrust pin 2 and a sleeve 3 mounted on the rod 1. The sleeve 3 is cut along its axis and at both sides of the cut it has alternately made skew recesses 4. The inner surfaces of skew recesses 4 keenest-lute bearing surfaces for the pin 2. One end of the sleeve 3 situated after mounting it on the rod 1 closer to the end of the rod has the outer surface in a form of a cone. On the said surface a pectoral hook 5 rests whose part of the inner surface of the hole or bore is also in a form of a cone constituting the resistance-clamping seat for the conical end of the sleeve 3. Dimensions of the conical surface of the hole of the pectoral hook 5 correspond to dimensions of the conical surface of the end of the sleeve 3. The sleeve 3 together with the pectoral hook 5 are mounted on the same end of the rod 1 on which the pin 2 is mounted, which is situated at a distance from this end of the rod 1 equal to the sum of the length of the sleeve 3 and the height of the pectoral hook 5. On the other end of the rod 1 terminated with a pin the known lumbar hook 6 is mounted.

Jo - 4 -

Claims (7)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A surgical strut for the treatment of a back-bone, comprising:
- a rod having a circular cross-section, - a thrust pin provided on said rod and protruding at one side wherefrom, - a sleeve mounted on said rod, said sleeve having a longitudinal cut provided with skew recesses which keenest-lute a bearing surface for said pin, one end of said sleeve, closer to one end of said rod, having an outer surface in the form of a cone, and - a hook having a conical bore mounted on said conical outer surface of said sleeve.
2. A surgical strut according to claim 1, wherein said thrust pin is fixed to said rod at a distance from said one end of the rod equal to the sum of the length of the sleeve and the height of the hook.
3. A surgical strut according to claim 2, wherein said sleeve and said hook are mounted at the same end of said rod.
4. A surgical strut according to claim 3, wherein said hook is a pectoral hook.
5. A surgical strut according to claim 4, wherein the other end of said rod is provided with a lumbar hook.
6. A surgical strut according to claim 1, 3 or 5, wherein said recesses are provided on one side of the cut.
7. A surgical strut according to claim 1, 3 or 5, wherein said recesses are provided alternately on both sides of said cut.
CA000418803A 1982-01-18 1982-12-31 Surgical strut for treatment of the back-bone Expired CA1185855A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PLP-234744 1982-01-18
PL1982234744A PL131829B1 (en) 1982-01-18 1982-01-18 Surgical strut for treating spine anomalies

Publications (1)

Publication Number Publication Date
CA1185855A true CA1185855A (en) 1985-04-23

Family

ID=20011264

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000418803A Expired CA1185855A (en) 1982-01-18 1982-12-31 Surgical strut for treatment of the back-bone

Country Status (5)

Country Link
US (1) US4404967A (en)
CA (1) CA1185855A (en)
DE (1) DE3248155A1 (en)
FR (1) FR2519859A1 (en)
PL (1) PL131829B1 (en)

Families Citing this family (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4773402A (en) * 1985-09-13 1988-09-27 Isola Implants, Inc. Dorsal transacral surgical implant
WO1987007134A1 (en) * 1986-05-30 1987-12-03 John Bumpus Distraction rods
US4790303A (en) * 1987-03-11 1988-12-13 Acromed Corporation Apparatus and method for securing bone graft
US5468241A (en) * 1988-02-18 1995-11-21 Howmedica Gmbh Support device for the human vertebral column
US4887596A (en) * 1988-03-02 1989-12-19 Synthes (U.S.A.) Open backed pedicle screw
GB2254394B (en) * 1988-12-21 1993-03-17 Bristol Myers Squibb Co Coupler assembly
US5074864A (en) * 1988-12-21 1991-12-24 Zimmer, Inc. Clamp assembly for use in a spinal system
US5147359A (en) * 1988-12-21 1992-09-15 Zimmer, Inc. Spinal hook body
US5201734A (en) * 1988-12-21 1993-04-13 Zimmer, Inc. Spinal locking sleeve assembly
US5112332A (en) * 1988-12-21 1992-05-12 Zimmer, Inc. Method of performing spinal surgery
US5116334A (en) * 1988-12-21 1992-05-26 Zimmer, Inc. Posterior spinal system and method
JPH0620466B2 (en) * 1989-03-31 1994-03-23 有限会社田中医科器械製作所 Spinal column correction device
DE69325023T2 (en) * 1992-06-08 2000-01-05 Campbell Jun INSTRUMENTATION FOR SEGMENTAL RIB SUPPORT
US5281222A (en) * 1992-06-30 1994-01-25 Zimmer, Inc. Spinal implant system
US5275600A (en) * 1992-10-05 1994-01-04 Zimmer, Inc. Telescoping rod to rod coupler for a spinal system
US5766173A (en) * 1993-06-10 1998-06-16 Texas Scottish Rite Hospital For Children Distractor mechanism for external fixation device
EP1164954B1 (en) 1999-03-30 2006-12-06 Howmedica Osteonics Corp. Apparatus for spinal stabilization
US6234705B1 (en) 1999-04-06 2001-05-22 Synthes (Usa) Transconnector for coupling spinal rods
US6283967B1 (en) 1999-12-17 2001-09-04 Synthes (U.S.A.) Transconnector for coupling spinal rods
US6217578B1 (en) * 1999-10-19 2001-04-17 Stryker Spine S.A. Spinal cross connector
WO2003099148A2 (en) * 2002-05-21 2003-12-04 Sdgi Holdings, Inc. Vertebrae bone anchor and cable for coupling it to a rod
US7066938B2 (en) 2002-09-09 2006-06-27 Depuy Spine, Inc. Snap-on spinal rod connector
WO2004039268A1 (en) * 2002-10-28 2004-05-13 Sdgi Holdings, Inc. Multi-axial, cross-link connector system for spinal implants
US8029543B2 (en) 2002-10-28 2011-10-04 Warsaw Othopedic, Inc. Multi-axial, cross-link connector system for spinal implants
JP2007502677A (en) 2003-08-20 2007-02-15 ウォーソー・オーソペディック・インコーポレーテッド Multi-axis orthopedic devices and systems, eg for spinal surgery
US20050101953A1 (en) * 2003-11-10 2005-05-12 Simonson Peter M. Artificial facet joint and method
US7083622B2 (en) * 2003-11-10 2006-08-01 Simonson Peter M Artificial facet joint and method
US7708764B2 (en) 2003-11-10 2010-05-04 Simonson Peter M Method for creating an artificial facet
US7717939B2 (en) 2004-03-31 2010-05-18 Depuy Spine, Inc. Rod attachment for head to head cross connector
US7645294B2 (en) 2004-03-31 2010-01-12 Depuy Spine, Inc. Head-to-head connector spinal fixation system
US20060036324A1 (en) 2004-08-03 2006-02-16 Dan Sachs Adjustable spinal implant device and method
US8114158B2 (en) 2004-08-03 2012-02-14 Kspine, Inc. Facet device and method
US7717938B2 (en) 2004-08-27 2010-05-18 Depuy Spine, Inc. Dual rod cross connectors and inserter tools
US7879074B2 (en) 2005-09-27 2011-02-01 Depuy Spine, Inc. Posterior dynamic stabilization systems and methods
US8361117B2 (en) 2006-11-08 2013-01-29 Depuy Spine, Inc. Spinal cross connectors
US8974496B2 (en) * 2007-08-30 2015-03-10 Jeffrey Chun Wang Interspinous implant, tools and methods of implanting
EP2155086B1 (en) 2007-06-06 2016-05-04 K2M, Inc. Medical device to correct deformity
US20090093820A1 (en) * 2007-10-09 2009-04-09 Warsaw Orthopedic, Inc. Adjustable spinal stabilization systems
US20090105756A1 (en) 2007-10-23 2009-04-23 Marc Richelsoph Spinal implant
US8480680B2 (en) * 2007-12-07 2013-07-09 Adam Lewis Spinal decompression system and method
US9603629B2 (en) 2008-09-09 2017-03-28 Intelligent Implant Systems Llc Polyaxial screw assembly
US8828058B2 (en) 2008-11-11 2014-09-09 Kspine, Inc. Growth directed vertebral fixation system with distractible connector(s) and apical control
US8357183B2 (en) 2009-03-26 2013-01-22 Kspine, Inc. Semi-constrained anchoring system
US9168071B2 (en) 2009-09-15 2015-10-27 K2M, Inc. Growth modulation system
US8246656B2 (en) 2010-02-25 2012-08-21 Depuy Spine, Inc. Crossover spinous process implant
US9333009B2 (en) 2011-06-03 2016-05-10 K2M, Inc. Spinal correction system actuators
WO2014172632A2 (en) 2011-11-16 2014-10-23 Kspine, Inc. Spinal correction and secondary stabilization
US8920472B2 (en) 2011-11-16 2014-12-30 Kspine, Inc. Spinal correction and secondary stabilization
US9468469B2 (en) 2011-11-16 2016-10-18 K2M, Inc. Transverse coupler adjuster spinal correction systems and methods
US9468468B2 (en) 2011-11-16 2016-10-18 K2M, Inc. Transverse connector for spinal stabilization system
US9451987B2 (en) 2011-11-16 2016-09-27 K2M, Inc. System and method for spinal correction
US9339306B2 (en) * 2012-08-29 2016-05-17 K2M, Inc. Adjustable axial spinal rod connector
US9468471B2 (en) 2013-09-17 2016-10-18 K2M, Inc. Transverse coupler adjuster spinal correction systems and methods
US9044273B2 (en) 2013-10-07 2015-06-02 Intelligent Implant Systems, Llc Polyaxial plate rod system and surgical procedure
US10575876B2 (en) 2016-04-20 2020-03-03 K2M, Inc. Spinal stabilization assemblies with bone hooks

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2289164A1 (en) * 1974-11-04 1976-05-28 Tornier Rene Device for treatment of scoliosis - has rod with hook movable along it away from fixed hook
PL96695B1 (en) * 1975-02-17 1978-01-31 SURGICAL DISTRACTOR AND DEVICE FOR ITS INSERTION
SU735248A1 (en) * 1978-04-14 1980-05-25 Харьковский Научно-Исследовательский Институт Ортопедии И Травматологии Им. М.И.Ситенко Vertebral column correcting apparatus
PL114098B1 (en) * 1978-04-14 1981-01-31 Wyzsza Szkola Inzynierska Apparatus for correcting spinal curvature
FR2482669A2 (en) * 1979-05-28 1981-11-20 Semt IMPROVEMENT TO INJECTION PUMP FOR INTERNAL COMBUSTION ENGINE
US4269178A (en) * 1979-06-04 1981-05-26 Keene James S Hook assembly for engaging a spinal column
US4281633A (en) * 1979-07-10 1981-08-04 Unarco Industries, Inc. Barbecue grill with snuffing means and heat control
PL127121B1 (en) * 1980-07-30 1983-09-30 Wyzsza Szkola Inzynierska Surgical strut for treating spinal affections

Also Published As

Publication number Publication date
US4404967A (en) 1983-09-20
DE3248155A1 (en) 1983-07-28
FR2519859A1 (en) 1983-07-22
PL234744A1 (en) 1983-08-01
PL131829B1 (en) 1985-01-31

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