Hemostatic devices and methods of making same
First Claim
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1. A composition, comprising:
- biocompatible, oxidized cellulose particles having an average designated nominal particle size of from about 0.035 to about 4.35 mm; and
a biocompatible, porous water-soluble or water-swellable polysaccharide binder component;
wherein said composition is suitable for use in a hemostatic device.
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Abstract
The present invention includes compositions suitable for use in a hemostatic device and hemostatic devices utilizing such compositions, as well as methods of making the compositions and the medical devices utilizing such compositions, where the compositions contain biocompatible, oxidized cellulose particles having an average designated nominal particle size of about 0.035-4.35 mm and a biocompatible, water-soluble or water-swellable polysaccharide porous binder component.
109 Citations
28 Claims
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1. A composition, comprising:
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biocompatible, oxidized cellulose particles having an average designated nominal particle size of from about 0.035 to about 4.35 mm; and
a biocompatible, porous water-soluble or water-swellable polysaccharide binder component;
wherein said composition is suitable for use in a hemostatic device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 16, 17, 18)
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11. A hemostatic device comprising a composition suitable for use therein, said composition comprising:
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biocompatible, oxidized cellulose particles having an average designated nominal particle size of from about 0.035 to about 4.35 mm; and
a biocompatible, porous water-soluble or water-swellable polysaccharide binder component. - View Dependent Claims (12, 13, 14, 15, 19, 20, 21)
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22. A composition suitable for use in a hemostatic device, said composition produced according to the steps of:
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providing a polymer solution having a water-soluble or water-swellable polysaccharide polymer dissolved in a suitable solvent therefore, providing biocompatible, oxidized cellulose particles having an average designated nominal size from about of 0.035 to about 4.35 mm, contacting said polymer solution with said oxidized cellulose particles under conditions effective to disperse said oxidized cellulose particles substantially homogenously throughout said polymer solution to form a substantially homogenous dispersion, subjecting said polymer solution having said particles dispersed throughout to conditions effective to solidify said substantially homogenous dispersion; and
removing said solvent from the solidified dispersion, thereby forming said composition comprising said particles and a porous, water-soluble or water-swellable polysaccharide polymer binder component.
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23. A process for making a composition useful in a hemostatic device, comprising:
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providing a polymer solution having a water-soluble or water-swellable polysaccharide polymer dissolved in a suitable solvent therefore, providing biocompatible, oxidized cellulose particles having an average designated nominal size from about of 0.035 to about 4.35 mm, contacting said polymer solution with said oxidized cellulose particles under conditions effective to disperse said oxidized cellulose particles substantially homogenously throughout said polymer solution to form a substantially homogenous dispersion, subjecting said polymer solution having said particles dispersed throughout to conditions effective to solidify said substantially homogenous dispersion; and
removing said solvent from the solidified dispersion, thereby forming said composition comprising said particles and a porous, water-soluble or water-swellable polysaccharide polymer binder component. - View Dependent Claims (24, 25, 26, 27, 28)
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Specification