Bioabsorbable fixation devices
US-2016339153-A1 · Nov 24, 2016 · US
Bioabsorbable polymers
US9387274B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9387274-B2 |
| Application number | US-201514857948-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 18, 2015 |
| Priority date | Oct 29, 2004 |
| Publication date | Jul 12, 2016 |
| Grant date | Jul 12, 2016 |
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Abstract
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A new material was assessed in a patellar reattachment model in sheep and evaluated using histology and biomechanical testing. Overall, these materials showed they produced minimal reactivity histologically. The new material had higher failure strength overall compared to a previous study with the control material as repairs completed with PLG/CS/TCP anchors were significantly stronger compared to repairs with PLLA anchors.
First claim
Opening claim text (preview).
The invention claimed is: 1. An internal fixation device made from a bioabsorbable polymer composition comprising: (a) about 70 to 80 percent by weight of a copolymer, based on the weight of said bioabsorbable polymer composition, wherein said copolymer is selected from the group consisting of poly 1-lactide:co-glycolide, poly 1-lactide:d,l-lactide, and mixtures thereof; and (b) about 20 to 30 percent by weight of a ceramic filler, based on the weight of the bioabsorbably polymer composition, wherein said ceramic filler comprises calcium carbonate. 2. A method comprising securing soft tissue to a bone using at least one suture anchor comprising an internal fixation device made from a bioabsorbable polymer composition, the composition comprises: (a) from 70 to 80 percent by weight of a copolymer, based on the weight of said bioabsorbable polymer composition, wherein said copolymer is selected from the group consisting of poly 1-lactide:co-glycolide, poly 1-lactide:d,l-lactide, and mixtures thereof; and (b) from 20 to 30 percent by weight of a ceramic filler, based on the weight of the bioabsorbable polymer composition, wherein said ceramic filler comprises calcium sulphate and optionally tricalcium phosphate. 3. The method of claim 2 , wherein the soft tissue is selected from the group consisting of ligament, tendon, muscle, and cartilage. 4. The method of claim 2 , wherein the bone is patella bone. 5. The method of claim 2 , wherein the ceramic filler comprises material purified from natural sources. 6. The method of claim 2 , wherein the ceramic filler comprises synthetic material. 7. The method of claim 2 , wherein the ceramic filler comprises a mixture of synthetic material and material purified from natural sources.
Assignees
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Classifications
of phosphorus containing material, e.g. apatite · CPC title
Drugs for skeletal disorders · CPC title
Carbonates; Bicarbonates · CPC title
Aluminium, calcium or magnesium; Compounds thereof {, e.g. clay} · CPC title
obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds {(A61L31/041 takes precedence)} · CPC title
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- What does patent US9387274B2 cover?
- A new material was assessed in a patellar reattachment model in sheep and evaluated using histology and biomechanical testing. Overall, these materials showed they produced minimal reactivity histologically. The new material had higher failure strength overall compared to a previous study with the control material as repairs completed with PLG/CS/TCP anchors were significantly stronger compared…
- Who is the assignee on this patent?
- Smith & Nephew Inc
- What technology area does this patent fall under?
- Primary CPC classification A61L31/127. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Jul 12 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).