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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0801553 (2015-07-16) |
| 등록번호 | US-9642608 (2017-05-09) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 0 인용 특허 : 596 |
The present invention is directed to tack-free gels and to methods for manufacturing a tack-free gel pad, in which a discontinuous layer of fluorinated ultrahigh molecular weight polyethylene is permanently bonded to the gel pad to provide a tack-free coating. The gel pad may be incorporated into a
The present invention is directed to tack-free gels and to methods for manufacturing a tack-free gel pad, in which a discontinuous layer of fluorinated ultrahigh molecular weight polyethylene is permanently bonded to the gel pad to provide a tack-free coating. The gel pad may be incorporated into a gel cap to provide a surgical access device having a tack-free surface.
1. A method for making a tack-free gel, comprising the steps of: providing a mold;applying a fluorinated ultrahigh molecular weight polyethylene to the mold;heating a gel slurry beyond its curing temperature to a molten state, to thereby produce a molten gel;injecting the molten gel into the mold; a
1. A method for making a tack-free gel, comprising the steps of: providing a mold;applying a fluorinated ultrahigh molecular weight polyethylene to the mold;heating a gel slurry beyond its curing temperature to a molten state, to thereby produce a molten gel;injecting the molten gel into the mold; andcooling the mold until the gel is set to thereby produce a tack-free gel. 2. The method of claim 1, wherein the mold is textured prior to applying the fluorinated ultrahigh molecular weight polyethylene by spraying the mold with blast media. 3. The method of claim 1, wherein the mold is preheated to a temperature of approximately 220° F. to approximately 260° F. prior to applying the fluorinated ultrahigh molecular weight polyethylene. 4. The method of claim 1, wherein the fluorinated ultrahigh molecular weight polyethylene is applied to the mold by electrostatic coating. 5. The method of claim 1, wherein the fluorinated ultrahigh molecular weight polyethylene comprises a powder having a particle size of approximately 5 μm to approximately 100 μm. 6. The method of claim 1, wherein the mold is preheated to a temperature of approximately 110° F. to approximately 160° F. prior to injecting the molten gel. 7. The method of claim 1, wherein the gel slurry comprises an oil and an elastomer. 8. The method of claim 7, wherein the gel slurry comprises a ratio by weight of oil to elastomer from approximately 7:1 to approximately 10:1. 9. The method of claim 7, wherein the oil comprises a mineral oil and the elastomer comprises block copolymer styrene-ethylene/butylene-styrene polymer. 10. The method of claim 1, wherein the gel slurry is bulk degassed prior to heating the gel slurry to a molten state. 11. The method of claim 10, wherein the gel slurry is bulk degassed at a temperature of approximately 120° F. to approximately 130° F. 12. A method for making a tack-free gel, comprising the steps of: providing a mold;applying a fluorinated ultrahigh molecular weight polyethylene to the mold;preheating the mold to a temperature of approximately 110° F. to approximately 160° F.;heating a gel slurry to a temperature of approximately 125° F.;degassing the gel slurry;dispensing the gel slurry into the mold;degassing the gel slurry a second time; andcuring the gel in the mold at a temperature of approximately 140° F. to approximately 160° F. to provide a tack-free gel. 13. The method of claim 12, wherein the mold is textured prior to applying the fluorinated ultrahigh molecular weight polyethylene by spraying the mold with blast media. 14. The method of claim 12, wherein the gel slurry comprises an oil and an elastomer. 15. The method of claim 14, wherein the oil comprises a mineral oil and the elastomer comprises styrene-ethylene/butylene-styrene polymer. 16. A method for making a tack-free gel, comprising the steps of: providing a mold;spraying the mold with a polyethylene spray;heating a gel slurry beyond its curing temperature to a molten state, to thereby produce a molten gel;dispensing the molten gel into the mold; andcooling the mold until the gel is set to thereby produce a tack-free gel.
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