US Patent No: 6,146,419
Number of patents in Portfolio can not be more than 2000
Method for forming a hollow prosthesis
Stats
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Nov 14, 2000
Issued date -
Mar 3, 2000
filing date -
09/518,358
serial no -
Expired
status
Importance
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Abstract
An alloplastic device and process for replacement of a damaged or diseased spinal vertebral column disk. The replacement disk is hollow room temperature vulcanizable (RTV) silicone shaped to mimic the natural disk being replaced. The shape can be derived from a mold of the natural disk or an MRI scan. The replacement disk may be trabeculated (honeycombed) and may be filled with a lubricating fluid including triglyceride oil, preferably soybean oil. The replacement disk is formed by allowing RTV silicone injected into a mold to vulcanize at room temperatures until a wall of sufficient thickness is formed. The unvulcanized silicone is expressed to form the hollow interior. The replacement disk is formed with a nipple having an interior concavity. The nipple is cut from the body of the replacement disk leaving an opening into the hollow interior. The nipple is inverted and sealed into the opening so that the nipple extends from the surface of the replacement disk into the interior where it contacts the opposite wall of the disk. The inverted nipple thus provides a central support for the disk and a valve structure to inject the lubricating fluid into the hollow interior. The concavity of the inverted nipple is filled with RTV silicone which then vulcanizes and seals the opening. The hollow disk lubricates itself since the lubricating fluid percolates slowly through the silicone wall. Other uses include replacement for a worn out or injured miniscus, and other orthopedic applications including carpal tunnel damage or injuries.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,376,323 Method of forming a hollow prosthesis | 16 | 1993 | |
| 5,700,288 Breast prosthesis | 11 | 1996 | |
| 5,855,606 Breast prosthesis | 9 | 1997 | |
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| 4,643,733 Permanent reconstruction implant and method of performing human tissue expansion | 52 | 1983 | |
| 4,944,749 Implant and inflating construction | 27 | 1988 | |
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| 4,671,255 Tissue expander with self-contained injection reservoir and reinforcing insert | 32 | 1985 | |
| 5,658,330 Molded silicone foam implant and method for making | 109 | 1995 | |
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| 4,253,201 Prosthesis with self-sealing valve | 44 | 1979 | |
| 5,133,753 Method for expanding a self-sealing tissue prosthesis | 36 | 1991 | |
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| 4,731,081 Rupture-resistant prosthesis with creasable shell and method of forming same | 53 | 1985 | |
| 5,019,101 Self-sealing valve for implantable device | 40 | 1989 | |
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| 4,546,899 Apparatus and method for producing molded hollow article with filling of foamed plastic thermal insulation, and article produced thereby | 28 | 1982 | |
| 4,668,567 Method for producing a hollow molded article with a filling of foamed plastic thermal insulation, and the article produced thereby | 17 | 1985 | |
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| 4,676,795 Prosthesis as replacement for an amputated breast | 21 | 1985 | |
| 4,826,501 Breast prosthesis | 16 | 1988 | |
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| 4,932,969 Joint endoprosthesis | 317 | 1987 | |
| 5,702,454 Process for implanting an invertebral prosthesis | 244 | 1996 | |
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| 5,554,180 Intraluminal stenting graft | 68 | 1995 | |
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| 4,661,187 Method of making life-like prosthetic devices | 16 | 1985 | |
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| 5,352,307 Method of producing a breast prosthesis | 34 | 1992 | |
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| 5,702,446 Bone prosthesis | 28 | 1996 | |
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| 5,071,443 Blue azo dyestuff mixture for strong blue color on hydrophobic fibers | 5 | 1990 | |
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| 5,632,777 Method of inflating a prosthesis | 22 | 1995 | |
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| 4,263,682 Self-sealing valve and fluid fillable article including such a valve | 36 | 1978 | |
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| 5,607,473 Breast prosthesis | 10 | 1996 | |
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| 4,531,244 Mammary prosthesis with multiple flow spaces | 32 | 1983 | |
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| 5,496,370 Gel-like prosthetic device | 31 | 1993 | |
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| 5,314,478 Artificial bone connection prosthesis | 186 | 1991 | |
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| 5,035,758 Method of making a breast prosthesis | 27 | 1990 | |
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| 2005/0188,472 Washer damper thereof, and control method thereof | 1 | 2005 | |
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| 5,091,121 Production of a balloon for an intraocular lens | 10 | 1990 | |
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| 5,658,329 Filling material for soft tissue implant prostheses and implants made therewith | 30 | 1995 | |
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| 5,527,359 Method of making positive and negative models for artificial breasts | 16 | 1995 | |
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| 5,123,926 Artificial spinal prosthesis | 481 | 1991 | |
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| 5,824,093 Prosthetic spinal disc nucleus | 316 | 1997 | |
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| 5,549,679 Expandable fabric implant for stabilizing the spinal motion segment | 525 | 1995 | |
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| 5,545,229 Functional and biocompatible intervertebral disc spacer containing elastomeric material of varying hardness | 300 | 1993 | |
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| 4,995,882 Radiolucent breast implant | 27 | 1989 | |
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| 4,401,492 Breast prosthesis and method of making the same | 35 | 1982 | |
| 4,574,780 Tissue expander and method | 53 | 1984 | |
| 4,549,529 Myopia alleviation prosthesis | 38 | 1985 | |
| 4,735,754 Method for fabricating artificial body parts | 29 | 1986 | |
| 4,863,477 Synthetic intervertebral disc prosthesis | 462 | 1987 | |
| 4,902,294 Implantable mammary prosthesis adapted to combat the formation of a retractile shell | 53 | 1987 | |
| 5,282,856 Implantable prosthetic device | 37 | 1987 | |
| 5,005,591 Self-inflating tissue expander | 24 | 1990 | |
| 5,108,430 Implantable reservoir adapted to receive and store structural devices therein | 35 | 1990 | |
| 5,098,330 Breast enhancement brassiere | 46 | 1991 | |
| 5,303,718 Method and device for the osteosynthesis of bones | 101 | 1992 | |
| 5,358,521 Multiple-layer prosthesis implant with tissue tactility | 14 | 1992 | |
| 5,693,099 Endoprosthesis | 39 | 1993 | |
| 5,308,420 EVA insole manufacturing process | 26 | 1993 | |
| 5,514,180 Prosthetic intervertebral devices | 569 | 1994 | |
| 5,496,367 Breast implant with baffles | 14 | 1994 | |
| 5,645,597 Disc replacement method and apparatus | 356 | 1995 | |