摘要:
The present invention relates to systems for and corresponding methods of delivering a therapeutic agent to a vessel wall of a body lumen by providing a compound capable of being crosslinked after intraluminal release onto a vessel wall so that the therapeutic agent is temporarily retained at the site of delivery by the crosslinked compound.
摘要:
The invention relates to a method for loading structured surfaces that are preferably made of a polymer material with the dithiolethione molecule, oltipraz, as well as the coated medical products obtained by means of said method. The invention also relates to analogues of oltipraz that can be used as described above.
摘要:
본 발명은 각종 질환의 진단 및 치료를 위해 피하조직 및 동맥혈관을 천자하여 일정한 시간 동안 삽입되었다가 제거되는 과정에서 상기 천자부위의 지혈이 이루어 지도록 하는 지혈요소가 구비된 의료기구에 관한 것으로, 피하조직을 관통하여 동맥혈관에 삽입되는 중공의 몸체부재와, 상기 몸체부재의 상부 표면에 형성되는 지혈제를 포함한다.
摘要:
There is provided inter alia a substrate with a surface having a hydrophilic coating comprising a cross-linked copolymer of components A and B, and optional components C and D; wherein component A comprises one or more C 2 -C 16 hydrophilic monomers each bearing one or more alkene and/or alkyne groups; component B comprises one or more hydrophilic polymers each bearing two or more alkene and/or alkyne groups; component C, if present, comprises one or more beneficial agents each bearing one or more alkene or alkyne groups; and component D, if present, comprises one or more low molecular weight cross-linking agents each bearing two or more functional groups independently selected from thiol, alkene and alkyne groups; wherein the cross-linked copolymer is formed by radical polymerisation involving the alkene and/or alkyne groups of components A, B and C (if present) and involving the functional groups of component D (if present); wherein the hydrophilic coating optionally comprises component E which comprises one or more beneficial agents, wherein component E does not form a copolymer with components A, B, C (if present) and D (if present); and wherein the hydrophilic coating is covalently attached to the surface of the substrate.
摘要:
The invention relates to a coating comprising a biodegradable polymer comprising at least two different functional groups pendant to the polymer backbone, which functional groups are selected from the group of carboxyl-, amine, hydroxyl, ester, amide-, thiol- or thioester groups. The two different functional groups comprise at least an unprotected hydrophilic functional group chosen from a carboxyl-, amine, thiol or hydroxyl group and at least a protected hydrophobic functional group chosen from an ester, amide- or thioester group. The invention further relates to an implantable device comprising the coating composition. The implantable device is includes cardiac pacemakers and defibrillators; leads and electrodes for the preceding, organ stimulators such as nerve, bladder, sphincter and diaphragm stimulators, prostheses, rods, vascular grafts, self-expandable stents, balloon- expandable stents, stent-grafts, grafts, catheters, artificial heart valves and cerebrospinal fluid shunts.
摘要:
Embodiments of the present invention relate to a metastable silver nanoparticle composite, a process for its manufacture, and its use as a source for silver ions. In various embodiments, the composite comprises, consists essentially of, or consists of metastable silver nanoparticles that change shape when exposed to moisture, a stability modulant that controls the rate of the shape change, and a substrate to support the silver nanoparticles and the modulant.
摘要:
The present invention relates to substrates comprising a crosslinked network of covalently attached antimicrobial and/or antibiofouling polymers. The crosslinked network of antimicrobial and/or antibiofouling polymers acts highly efficiently against pathogens, e.g. bacteria and fungi. Both the antimicrobial and the antibiofouling cross-linked polymer networks are preferably better resistant to mechanical damage than simple surface-immobilized polymer monolayers. The antimicrobial and/or antibiofouling polymers of the crosslinked network are preferably obtained by ring opening metathesis polymerization (ROMP) and exhibit a molecular weight of preferably more than 30,000 or even 100,000 g mol-1. The crosslinked network of antimicrobial and/or antibiofouling polymers is preferably covalently attached to the surface of a substrate, e.g. an implant, a medical device, medical equipment or a (tissue-supporting) biomaterial, etc. The present invention is also directed to uses of crosslinked networks of antimicrobial and/or antibiofouling polymers as defined herein, e.g. for coating a surface of a substrate, and to methods therefore.
摘要:
Drug-eluting rotational spun coatings that include one or more therapeutic agents may be used to coat a medical device. The medical devices include, for example, balloon catheters, vascular grafts and stents, which are coated with drug-eluting rotational spun materials that may be used to deliver a therapeutic agent to a target tissue or body lumen.
摘要:
The present disclosure is directed to a class of fluorinated copolymers, such as PTFE copolymers, that can be dissolved in low toxicity solvents, such as Class III Solvents, and that enable the creation of stable water-in-solvent emulsions comprising the fluorinated copolymers dissolved in a low toxicity solvents and a hydrophilic agent (e.g., a therapeutic agent) dissolved in an aqueous solvent, such as water or saline.