Films having improved characteristics and methods for their preparation and use
First Claim
Patent Images
1. A gelatin film characterized by:
- a film thickness in the range from 0.03 mm to 0.2 mm;
a pliability in the range from 1 mN to 4 mN; and
at least one characteristic selected from the group consisting of;
a moisture content in the range from 11% to 16%;
an elasticity in the range from 30% to 150%;
a tensile strength in the range from 150 N/cm2 to 260 N/cm2 ;
a melting temperature in the range from 33°
C. to 40°
C.;
a collagenase digestion time in the range from 10 min. to 40 min, anda degree of swelling (V/Vo) in the range from 4.5 to 6.5.
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Abstract
Gelatin film compositions are useful for immobilization over tissue, usually by the application of energy to the films. Exemplary films comprise cross-linked and non-cross-linked granular and non-granular gelatin sheets, typically including a plasticizer. The gelatin films are dry, thin, and preferably meet certain pliability, elasticity, melting temperature, and other criteria. Methods are described for producing these films from collagen. Methods are further described for applying these films to tissue.
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Citations
16 Claims
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1. A gelatin film characterized by:
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a film thickness in the range from 0.03 mm to 0.2 mm; a pliability in the range from 1 mN to 4 mN; and at least one characteristic selected from the group consisting of; a moisture content in the range from 11% to 16%; an elasticity in the range from 30% to 150%; a tensile strength in the range from 150 N/cm2 to 260 N/cm2 ; a melting temperature in the range from 33°
C. to 40°
C.;a collagenase digestion time in the range from 10 min. to 40 min, and a degree of swelling (V/Vo) in the range from 4.5 to 6.5. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification