摘要:
Collagen implants that are useful as wound healing matrices are characterized by being formed of collagen fibrils that are not chemically cross-linked, and having a bulk density of 0.01 to 0.3 g/cm.sup.3 and a pore population in which at least about 80% of the pores have an average pore size of 35 to 250 microns. The implants are capable of promoting connective tissue deposition, angiogenesis, reepithelialization, and fibroplasia. The wound healing matrix also serves as an effective sustained delivery system for bioactive agents.
摘要翻译:可用作伤口愈合基质的胶原植入物的特征在于由不是化学交联的,具有0.01至0.3g / cm 3的堆积密度的胶原原纤维和其中至少约80% 孔的平均孔径为35至250微米。 植入物能够促进结缔组织沉积,血管生成,再上皮细胞化和纤维增生。 伤口愈合基质还可用作生物活性剂的有效持续递送系统。
摘要:
Collagen implants that are useful as wound healing matrices are characterized by being formed of collagen fibrils that are not chemically cross-linked, and having a bulk density of 0.01 to 0.3 g/cm.sup.3 and a pore population in which at least about 80% of the pores have an average pore size of 35 to 250 microns. The implants are capable of promoting connective tissue deposition, angiogenesis, reepithelialization, and fibroplasia. The wound healing matrix also serves as an effective sustained delivery system for bioactive agents.
摘要翻译:可用作伤口愈合基质的胶原植入物的特征在于由不是化学交联的,具有0.01至0.3g / cm 3的堆积密度的胶原原纤维和其中至少约80% 孔的平均孔径为35至250微米。 植入物能够促进结缔组织沉积,血管生成,再上皮细胞化和纤维增生。 伤口愈合基质还可用作生物活性剂的有效持续递送系统。
摘要:
Collagen implants that are useful as wound healing matrices are characterized by being formed of collagen fibrils that are not chemically cross-linked, and having a bulk density of 0.01 to 0.3 g/cm.sup.3 and a pore population in which at least about 80% of the pores have an average pore size of 35 to 250 microns. The implants are capable of promoting connective tissue deposition, angiogenesis, reepithelialization, and fibroplasia. The wound healing matrix also serves as an effective sustained delivery system for bioactive agents.
摘要翻译:可用作伤口愈合基质的胶原植入物的特征在于由不是化学交联的,具有0.01至0.3g / cm 3的堆积密度的胶原原纤维和其中至少约80% 孔的平均孔径为35至250微米。 植入物能够促进结缔组织沉积,血管生成,再上皮细胞化和纤维增生。 伤口愈合基质还可用作生物活性剂的有效持续递送系统。
摘要:
Processes for the preparation of compositions used in conductive bone repair are disclosed. The compositions contain a mixture consisting essentially of either a calcium phosphate particulate mineral component or particulate hydroxyapatite in admixture with atelopeptide reconstituted fibrillar collagen. The method is comprised of mixing a dispersion of the collagen and mineral, the latter which is present in dry particulate form, followed by molding and drying the composition in a mold to obtain a dried composition.
摘要:
A composition for use in bone repair, in particular, in onlay procedures, which comprises calcium phosphate mineral particles in admixture with atelopeptide reconstituted fibrillar collagen preparations is disclosed. This composition is non-immunogenic and encourages the fusion of host bone with new bone growth through the implant. Additional processes for curing the implant to improve its compressive strength include heat curing, maturation, and cross-linking.
摘要:
A composition for use in bone repair, in particular, in only procedures, which comprises calcium phosphate mineral particles in admixture with atelopeptide reconstituted fibrillar collagen preparations is disclosed. This composition is non-immunogenic and encourages the fusion of host bone with new bone growth through the implant. Additional processes for curing the implant to improve its compressive strength include heat curing, maturation, and cross-linking.
摘要:
A process for coating the pores of a mineral matrix with collagen by pumping collagen through the molded matrix is disclosed. The resulting coated matrix can be used as a prosthesis in bone repair.
摘要:
The present invention relates generally to synthetic polymer compositions that form interpenetrating polymer networks. In a preferred embodiment, the compositions comprise two multifunctionally activated synthetic polymers, along with a tensile strength enhancer. Such compositions form matrices that exhibit superior cohesive strength and in many instances can serve as adequate replacements for surgical means of attaching tissues, such as sutures, sponges and medical staples.
摘要:
Collagen-based compositions useful in the attachment of tissues, or the attachment of tissues to synthetic implant materials, are disclosed. The compositions comprise collagen crosslinked using a multifunctionally activated synthetic hydrophilic polymer. A particularly preferred composition comprises fibrillar collagen, a fiber disassembly agent, and a multifunctionally activated synthetic hydrophilic polymer. Methods are disclosed for using the compositions to effect the attachment of a native tissue to the surface of another native tissue, a non-native tissue, or a synthetic implant. Also disclosed are methods of using the compositions to prevent the formation of surgical adhesions.
摘要:
Various forms of chemically modified collagen are covalently crosslinked with activated synthetic hydrophilic polymers to form optically clear biocompatible conjugates useful in a variety of medical applications, particularly in ophthalmic devices. The chemically modified collagen is in substantially nonfibrillar form at pH 7 and is preferably succinylated or methylated collagen. The synthetic hydrophilic polymer is preferably an activated polymeric glycol, most preferably, a di- or multifunctionally activated polyethylene glycol. Materials and devices formed with the chemically modified collagen-synthetic polymer conjugates have good optical clarity, mechanical strength, and moldability.