The handling of the clamp by forceps from outside partially conceals the clamp and positions the forceps to substantially obstruct visibility of the clamp and the blood vessel or aneurysm to which the clamp is being applied. The problem is a particularly burdensome one when clamping deep-lying, craneal aneurysms due to the fact that space and visibility is severely limited by surrounding brain tissue.Ĭlamps utilized for clamping blood vessels and aneurysms have heretofore generally had a configuration in which the clamp or an end of the clamp is grasped by forceps and squeezed to open the hemostatic end of the clamp for application to a blood vessel. In surgery, and in particular microsurgery techniques, blood vessels, aneurysms and the like, often must be clamped to prevent bleeding and hemorrhaging in very narrow special surroundings. The present invention pertains to surfical procedures in which a blood vessel or aneurysm must be blocked by pinching off the vessel with a device, either temporarily or permanently, to prevent bleeding or hemorrhaging. A clamp according to claim 1, characterized in that the ends of the coil spring cross each other within the area between the winding of the coil spring and the extremities of the operational ends of said arms. A clamp for clamping blood vessels or aneurysms to cease blood flow therefrom comprising a pair of arms each having a hemostatic end and an operational end, said arms having a mirror image configuration and being mounted one to the other such that said arms cross each other so the hemostatic ends of said arms align with and oppose one another, said hemostatic ends opening relative to one another when said operational ends are similarly opened, and means for biasing said arms to apply clamping force between said hemostatic ends of said arms, said operational ends of said arms having engaging means for securing said operating ends to an application instrument so said clamp is held by said instrument, the clamp being operated by spreading the operational ends of said clamp arms to open said hemostatic ends for application of said clamp to a blood vessel or aneurysm, and then released to provide clamping force thereto, characterized in that said clamp arms cross each other without being pivot-mounted, that said means for biasing said arms is a coil spring having at least one winding, each of the ends of said coil spring being connected fixedly to one of said operational ends of said arms.Ģ.
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