摘要:
A method of hydrating a sponge material for delivery to a body. The method includes the steps of placing a dry piece of sponge in a container at a first pressure. A hydrating fluid is then introduced into the container to hydrate the sponge. The pressure within the container is changed between the first pressure and a second pressure. At least a portion of the hydrating fluid is removed from the sponge, and the sponge is delivered to a bodily site.
摘要:
A system for facilitating hemostasis of a puncture site in a blood vessel injects an absorbable sponge pledget in a hydrated state to a position at an exterior of the blood vessel puncture to facilitate hemostasis. The system includes a tract dilator for locating the puncture, an introducer, and a pusher. The introducer includes a staging chamber for receiving the absorbent sponge pledget and a delivery chamber having a diameter smaller than a diameter of the staging chamber into which a hydrated pledget passes. The pledget is hydrated and compressed within the introducer and then ejected with the pusher to the delivery site to facilitate hemostasis of the blood vessel puncture. The system delivers the absorbable sponge pledget over a guidewire to ensure the proper positioning of the pledget over the puncture. The implanted absorbable sponge once delivered expands rapidly to fill the target site and is absorbed by the body over time.
摘要:
A novel pressure bandage and transdermal patch is disclosed. The bandage comprises a (i) sanitary gauze layer to be applied against a wound; (ii) a compressed cellulose middle layer overlying said sanitary gauze layer; and (iii) an outside layer overlying said sanitary gauze and compressed cellulose layers and having adhesive wings which apply the bandage to the skin, whereby blood from the wound when leaking through the gauze layer will saturate the compressed cellulose material and thereby expand said cellulose layer against said sanitary gauge and outer layers, thereby applying active pressure to the wound while soaking up excess blood.
摘要:
A wound dressing is provided herein for systemic administration of a physiologically- or biologically-active agent by controlled release of the agent into such wound. The wound dressing includes a substrate in the form of a fabric or cloth, at least a portion of which is cellulosic, which has been chemically modified to convert hydroxyl groups in the cellulosic portion to ionic-adsorbing sites. An ionic form of a physiologically- or biologically-active agent, namely an antibacterial agent, an antifungal agent, an analgesic agent, a tissue healant agent, a local anesthetic agent, an antibleeding agent, an enzyme or a vasoconstrictor is adsorbed in that substrate. Ionic bonds hold that agent temporarily to the substrate for controlled release therefrom in proportion to the amount of exudate in contact with the substrate. The ionic bonds are formed by adsorbing that agent on that substrate at room temperature. The ionic bonds disassociate upon contact with body exudate from wounds to which the wound dressing is applied by ion exchange with ions in the body exudate, thereby to release that agent in an amount in proportion to the amount of the exudate in contact with the substrate.
摘要:
A wound dressing having a porous layer with a good affinity to tissue of organisms comprising (a) a first layer to be placed on the wound surface having pores of 20 to 500 .mu.m in diameter, and 1 to 10 mm thick, and (b) a second layer remote from the wound surface having pores not more than 20 .mu.m in diameter, and 0.5 to 5 .mu.m thick. The first layer can be provided with an antimicrobial of not more than 50% by weight, and the second layer can contain an antimicrobial of 10 to 80% by weight.
摘要:
A styptic device capable of stopping bleeding in minor wounds without causing significant pain in the injured person comprising a porous web, at least about 50 microns thick, and comprising hydrophobic fibers, said web containing about 0.05 to 0.9 gram of styptic material per cubic centimeter of web.