GB1300449A - Appliance for surgical implantation for bone fracture fixation - Google Patents
Appliance for surgical implantation for bone fracture fixationInfo
- Publication number
- GB1300449A GB1300449A GB1382870A GB1382870A GB1300449A GB 1300449 A GB1300449 A GB 1300449A GB 1382870 A GB1382870 A GB 1382870A GB 1382870 A GB1382870 A GB 1382870A GB 1300449 A GB1300449 A GB 1300449A
- Authority
- GB
- United Kingdom
- Prior art keywords
- washer
- screw
- pass
- rollers
- run
- 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
Links
- 208000010392 Bone Fractures Diseases 0.000 title 1
- 238000002513 implantation Methods 0.000 title 1
- 239000002184 metal Substances 0.000 abstract 4
- 239000000463 material Substances 0.000 abstract 3
- -1 Polytetrafluoroethylene Polymers 0.000 abstract 2
- 239000012065 filter cake Substances 0.000 abstract 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 2
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 2
- 239000012779 reinforcing material Substances 0.000 abstract 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 210000000988 bone and bone Anatomy 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 239000010453 quartz Substances 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
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
- A61B17/8047—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
- F16B43/001—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts for sealing or insulation
Abstract
1300449 Polytetrafluoroethylene compositions METHODIST HOSPITAL 23 March 1970 [24 March 1969] 13828/70 Heading C3P [Also in Divisions A5 and F2] An inert frusto-conical washer 32 transmits the load between a metal screw 16 and a metal plate 10 when the screw is screwed into a fractured bone the washer reducing corrosion of the plate and screw and preventing abrasion of load bearing surfaces of the plate and screw. The washer is made from polytetrafluoroethylene resin having suspended therein reinforcing material such as particulate metal, fibrous metal, glass or quartz, or single crystalline filaments, the reinforcing material forming 15 to 50% by volume of the washer. The washer material may be made by adding the polymer and reinforcing ingredients to an organic solvent in a high-speed, high-shear mixer and filtering the resultant slurry to produce a filter cake having less than about 20% by weight of solvent. The filter cake is pressed between platens at 500 to 3000 p.s.i. and 170‹ F. for 1 to 5 minutes, run through the nip of rollers at 200-220‹ F. to reduce its thickness in steps of 20 mils. to a thickness betwen 20 and 80 mils., and run through the rollers at 320‹ to 360‹ F. to reduce its thickness by half during each pass, the material being folded double after each pass and run through the rollers at 90 degrees to the previous pass in the following pass. The rolled material is sintered at 640‹ to 660‹ F. for from about 30 minutes to several hours, followed by extended drying at 300‹ to 400‹ F. if required.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US80953669A | 1969-03-24 | 1969-03-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1300449A true GB1300449A (en) | 1972-12-20 |
Family
ID=25201561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1382870A Expired GB1300449A (en) | 1969-03-24 | 1970-03-23 | Appliance for surgical implantation for bone fracture fixation |
Country Status (4)
Country | Link |
---|---|
CA (1) | CA954402A (en) |
CH (1) | CH514328A (en) |
DE (1) | DE2013968A1 (en) |
GB (1) | GB1300449A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0723764A1 (en) * | 1995-01-27 | 1996-07-31 | Robert J. Medoff | Pin plate |
GB2305483A (en) * | 1995-09-22 | 1997-04-09 | Terray Corp | Hemispherical washer for use with a bone screw |
US6053682A (en) * | 1996-11-07 | 2000-04-25 | Robert Bosch Gmbh | Fastening screw with a bevel and deformable coating for securing a body place |
US6077266A (en) * | 1999-01-15 | 2000-06-20 | Medoff; Robert J. | Method of enabling bone screws to be installed at an angle in underlying bone |
WO2004049962A1 (en) * | 2002-12-02 | 2004-06-17 | Mathys Medizinaltechnik Ag | Implant for fixing bones |
FR2994380A1 (en) * | 2012-08-13 | 2014-02-14 | Biotech Ortho | COATING PLATE OF BONE FRAGMENTS AND METHODS OF MAKING SUCH PLATE. |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0355035B1 (en) * | 1987-11-03 | 1994-05-18 | SYNTHES AG, Chur | Bone plate with conical holes |
DE3942326A1 (en) * | 1989-12-21 | 1991-06-27 | Haerle Anton | SCREW AS AN OSTEOSYNTHESIS TOOL |
FR2706763A1 (en) * | 1993-06-25 | 1994-12-30 | Implants Ind Sa | Osteosynthesis plate |
DE19548395A1 (en) * | 1995-12-22 | 1997-09-18 | Leibinger Gmbh | Osteosynthesis device |
-
1970
- 1970-03-23 GB GB1382870A patent/GB1300449A/en not_active Expired
- 1970-03-24 CH CH451470A patent/CH514328A/en not_active IP Right Cessation
- 1970-03-24 DE DE19702013968 patent/DE2013968A1/en active Pending
- 1970-03-24 CA CA078,320A patent/CA954402A/en not_active Expired
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0723764A1 (en) * | 1995-01-27 | 1996-07-31 | Robert J. Medoff | Pin plate |
WO1996022743A1 (en) * | 1995-01-27 | 1996-08-01 | Collux Ab | Pin plate |
US5931839A (en) * | 1995-01-27 | 1999-08-03 | Medoff; Robert J. | Pin plate for fixation of bone fractures |
GB2305483A (en) * | 1995-09-22 | 1997-04-09 | Terray Corp | Hemispherical washer for use with a bone screw |
GB2305483B (en) * | 1995-09-22 | 1999-09-15 | Terray Corp | Washer for use with a bone screw |
US6053682A (en) * | 1996-11-07 | 2000-04-25 | Robert Bosch Gmbh | Fastening screw with a bevel and deformable coating for securing a body place |
US6077266A (en) * | 1999-01-15 | 2000-06-20 | Medoff; Robert J. | Method of enabling bone screws to be installed at an angle in underlying bone |
WO2004049962A1 (en) * | 2002-12-02 | 2004-06-17 | Mathys Medizinaltechnik Ag | Implant for fixing bones |
AU2002351649B2 (en) * | 2002-12-02 | 2006-08-24 | Synthes Gmbh | Implant for fixing bones |
US7641676B2 (en) | 2002-12-02 | 2010-01-05 | Synthes Usa, Llc | Implant for fixing bones |
CN1694653B (en) * | 2002-12-02 | 2010-07-14 | 斯恩蒂斯有限公司 | Implant for fixing bones |
FR2994380A1 (en) * | 2012-08-13 | 2014-02-14 | Biotech Ortho | COATING PLATE OF BONE FRAGMENTS AND METHODS OF MAKING SUCH PLATE. |
Also Published As
Publication number | Publication date |
---|---|
CH514328A (en) | 1971-10-31 |
DE2013968A1 (en) | 1970-10-08 |
CA954402A (en) | 1974-09-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |