WO2006039636A2 - Screw sleeve made of polyetheretherketone (peek) - Google Patents
Screw sleeve made of polyetheretherketone (peek) Download PDFInfo
- Publication number
- WO2006039636A2 WO2006039636A2 PCT/US2005/035462 US2005035462W WO2006039636A2 WO 2006039636 A2 WO2006039636 A2 WO 2006039636A2 US 2005035462 W US2005035462 W US 2005035462W WO 2006039636 A2 WO2006039636 A2 WO 2006039636A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bone
- sleeve
- orthopaedic
- screw
- openings
- 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
- A61B17/686—Plugs, i.e. elements forming interface between bone hole and implant or fastener, e.g. screw
Definitions
- Pedicle screw instrumentation has been commonly used for thoracolumbar fixation.
- osteoporotic spine with weak bone quality
- loosening of pedicle screw anchoring is a major concern.
- High failure rates of pedicle screw fixation have been reported in the osteoporotic bone associated with poor fixation.
- revision surgery with prior lumbar pedicle screw fixation reinsertion of pedicle screw in the same pedicle hole, even though using a larger diameter screw, often has unsatisfactory anchoring force.
- the diameter of vertebral pedicle is anatomically the same, using oversize diameter screw may break through the pedicle wall.
- Several techniques or pedicle screw designs have been suggested to decrease the loosening of pedicle screw.
- PMMA polymethylmethacrylate
- Polyetheretherketone (PEEK) , commercially available from Victrex PLC of the United Kingdom under the designation PEEK- OPTIMA 8 , is a new medical grade polymer and is licensed by FDA Device and Drug Master Files for use as a medical implant material .
- PEEK as an orthopaedic device material has increased in popularity in recent years, including artificial hip and knees, and spine fusion devices.
- PEEK has a similar modulus of elasticity to cortical bone. This particular stiffness encourages load sharing between implant material and nature bone, thereby stimulating bone healing effect .
- In vitro testing has shown that the content of osteoblastic proteins and the level of osteocalcin increases in the presence of PEEK contributing to increased bone healing.
- PEEK can help maintain an implant's shape over its service life.
- Lab investigations have shown that the presence of PEEK contributes to increased alkaline phosphate activity, leading to the formation of rapidly multiplying osteoplast- type cells. All these unique characteristics have made PEEK become an excellent biomaterial.
- intervertebral cage is available for the interbody fusion.
- PEEK- OPTIMA to make a sleeve shape implant in conjunct with bone screw, such as pedicle screw, to improve the pull out strength and resistance to the toggling force which is produced during daily activities of low back.
- bone screw such as pedicle screw
- this type of screw sleeve made of polyetheretherketone, in particular PEEK-OPTIMA " can also be used for augmentation of screw anchoring in different orthopaedic procedures, such as internal fixation of fractures including, for example hip fracture and tibia fracture, in osteoporotic patients or other revision orthopaedic surgeries which require screw instrumentation.
- the invention can be applied to any bone screw, such as used in fracture fixation throughout the body, not just the spine.
- Fig. 1 is an elevational view of a pedicle or bone screw for thoracolumbar fixation
- Fig. 2 is an elevational view of a screw sleeve according to the invention for use with the pedicle or bone screw of Fig. 1;
- Fig. 3 is an elevational view of a screw sleeve according to another embodiment of the invention.
- a pedicle screw 10 for thoracolumbar fixation is shown in Fig. 1.
- the same representation/diagram can be applied to any bone screw fixation, such as in fractures.
- a sleeve 12 of polyetheretherketone (PEEK) material, preferable PEEK-OPTIMA ® is shown in Fig. 2.
- Sleeve 12 has a substantially cylindrical body portion 14 which is open at one end 16 and is closed in a tapered or conical portion 18 at the opposite end.
- the inner diameter of body portion 14 is of a dimension allowing it to receive a pedicle screw, like screw 10 of Fig. 1, therein.
- Body 14 has both openings 20 and micropores 22 to receive bone growth.
- the openings 20 are generally rectangular in shape.
- Sleeve 30 in the embodiment of Fig. 3 similarly has micropores 32 in the body thereof and has openings 34 of somewhat irregular shapes.
- PEEK Polyarletherketone
- carbon fiber reinforced PEEK in medical applications. J. Mater. Science Letters, 6: 188-190.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US61543104P | 2004-10-01 | 2004-10-01 | |
US60/615,431 | 2004-10-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006039636A2 true WO2006039636A2 (en) | 2006-04-13 |
WO2006039636A3 WO2006039636A3 (en) | 2007-02-22 |
Family
ID=36143136
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/035462 WO2006039636A2 (en) | 2004-10-01 | 2005-10-03 | Screw sleeve made of polyetheretherketone (peek) |
Country Status (2)
Country | Link |
---|---|
US (1) | US20060129148A1 (en) |
WO (1) | WO2006039636A2 (en) |
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US8592531B2 (en) | 2007-09-11 | 2013-11-26 | Solvay Advanced Polymers, L.L.C. | Prosthetic devices |
US8992581B2 (en) | 2003-09-29 | 2015-03-31 | Smith & Nephew, Inc. | Bone plate and bone plate assemblies including polyaxial fasteners |
US9795424B2 (en) | 2005-07-25 | 2017-10-24 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
US10080598B2 (en) | 2005-07-25 | 2018-09-25 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
US10390866B2 (en) | 2011-06-15 | 2019-08-27 | Smith & Nephew, Inc. | Variable angle locking implant |
US10993750B2 (en) | 2015-09-18 | 2021-05-04 | Smith & Nephew, Inc. | Bone plate |
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US6736819B2 (en) | 2001-10-18 | 2004-05-18 | Kishore Tipirneni | System and method for fixation of bone fractures |
US20100312292A1 (en) * | 2001-10-18 | 2010-12-09 | Orthoip, Llc | Lagwire system and method for the fixation of bone fractures |
US9060809B2 (en) | 2001-10-18 | 2015-06-23 | Orthoip, Llc | Lagwire system and method for the fixation of bone fractures |
US8828067B2 (en) | 2001-10-18 | 2014-09-09 | Orthoip, Llc | Bone screw system and method |
US8679167B2 (en) | 2001-10-18 | 2014-03-25 | Orthoip, Llc | System and method for a cap used in the fixation of bone fractures |
US20100268285A1 (en) * | 2001-10-18 | 2010-10-21 | Orthoip, Llc | Bone screw system and method for the fixation of bone fractures |
US8702768B2 (en) | 2001-10-18 | 2014-04-22 | Orthoip, Llc | Cannulated bone screw system and method |
US8043337B2 (en) | 2006-06-14 | 2011-10-25 | Spartek Medical, Inc. | Implant system and method to treat degenerative disorders of the spine |
US8048121B2 (en) | 2007-06-05 | 2011-11-01 | Spartek Medical, Inc. | Spine implant with a defelction rod system anchored to a bone anchor and method |
US8114134B2 (en) | 2007-06-05 | 2012-02-14 | Spartek Medical, Inc. | Spinal prosthesis having a three bar linkage for motion preservation and dynamic stabilization of the spine |
US7993372B2 (en) | 2007-06-05 | 2011-08-09 | Spartek Medical, Inc. | Dynamic stabilization and motion preservation spinal implantation system with a shielded deflection rod system and method |
US8083772B2 (en) | 2007-06-05 | 2011-12-27 | Spartek Medical, Inc. | Dynamic spinal rod assembly and method for dynamic stabilization of the spine |
US8021396B2 (en) | 2007-06-05 | 2011-09-20 | Spartek Medical, Inc. | Configurable dynamic spinal rod and method for dynamic stabilization of the spine |
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Cited By (16)
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---|---|---|---|---|
US8992581B2 (en) | 2003-09-29 | 2015-03-31 | Smith & Nephew, Inc. | Bone plate and bone plate assemblies including polyaxial fasteners |
US10327822B2 (en) | 2005-07-25 | 2019-06-25 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
US10736680B2 (en) | 2005-07-25 | 2020-08-11 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
US9795424B2 (en) | 2005-07-25 | 2017-10-24 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
US10080598B2 (en) | 2005-07-25 | 2018-09-25 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
US10092337B2 (en) | 2005-07-25 | 2018-10-09 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
US10292741B2 (en) | 2005-07-25 | 2019-05-21 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
US11896270B2 (en) | 2005-07-25 | 2024-02-13 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
US9539361B2 (en) | 2007-09-11 | 2017-01-10 | Solvay Specialty Polymers Usa, L.L.C. | Prosthetic devices |
US9144628B2 (en) | 2007-09-11 | 2015-09-29 | Solvay Specialty Polymers Usa, Llc | Prosthetic devices |
US8592531B2 (en) | 2007-09-11 | 2013-11-26 | Solvay Advanced Polymers, L.L.C. | Prosthetic devices |
US10390866B2 (en) | 2011-06-15 | 2019-08-27 | Smith & Nephew, Inc. | Variable angle locking implant |
US10448980B2 (en) | 2011-06-15 | 2019-10-22 | Smith & Nephew, Inc. | Variable angle locking implant |
US10405901B2 (en) | 2011-06-15 | 2019-09-10 | Smith & Nephew, Inc. | Variable angle locking implant |
US10993750B2 (en) | 2015-09-18 | 2021-05-04 | Smith & Nephew, Inc. | Bone plate |
US11534213B2 (en) | 2015-09-18 | 2022-12-27 | Smith & Nephew, Inc. | Bone plate |
Also Published As
Publication number | Publication date |
---|---|
US20060129148A1 (en) | 2006-06-15 |
WO2006039636A3 (en) | 2007-02-22 |
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