This invention relates to devices and methods for the local, differential delivery of nitric oxide within the body. The devices include devices having at least two differing nitric oxide donor compounds, such as nitric oxide donor compounds having differing half-lives and nitric oxide donor compounds having different release mechanisms. The devices also include devices having at least two chemically distinct compositions to which nitric oxide donor compounds are adsorbed or attached or within which the donor compounds are disposed. The devices are typically used to increase local nitric oxide concentration in the body upon placement of the medical article at a delivery position on or within a patient. The methods of the present invention include a method of treating an atherosclerotic lesion which comprises: exposing the lesion to a first higher concentration of nitric oxide effective to reduce the number of cells within the lesion; and subsequently exposing the lesion to a second lower concentration of nitric oxide effective to inhibit restenosis. The methods of the present invention also include methods for preferentially providing differing nitric oxide donor compounds within different tissues to effect therapy.
本发明涉及在体内局部、有差别地输送
一氧化氮的装置和方法。这些装置包括具有至少两种不同
一氧化氮供体化合物的装置,例如具有不同半衰期的
一氧化氮供体化合物和具有不同释放机制的
一氧化氮供体化合物。这些装置还包括具有至少两种
化学性质不同的成分的装置,
一氧化氮供体化合物被吸附或附着在这些成分上,或者供体化合物被放置在这些成分中。这些装置通常用于在将医疗物品置于患者身上或体内的给药位置时,增加体内局部
一氧化氮浓度。本发明的方法包括一种治疗动脉粥样硬化病变的方法,该方法包括:将病变暴露于第一种较高浓度的
一氧化氮中,以有效减少病变内细胞的数量;随后将病变暴露于第二种较低浓度的
一氧化氮中,以有效抑制再狭窄。本发明的方法还包括在不同组织内优先提供不同的
一氧化氮供体化合物以达到治疗效果的方法。