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Medicinal leeches may be used in instances where skin flaps, skin grafts, surgical reattachments, or other tissues are adversely affected by impaired venous blood flow. Leeches may be used to alleviate the problem of venous congestion and delayed healing by creating prolonged localized bleeding.

The Medicinal Leech is a laboratory-raised bloodsucking annelid (segmented worm) that inhabits fresh water. The leech has a cylindrical body, is slightly flattened, and has around 32 segments. It has a disc-shaped sucker at the head end and a tail sucker at the caudal end.

Leeches may be used in instances where skin flaps, skin grafts, or other tissues are suffering from impaired venous circulation. Leeches may be used to alleviate the problem of venous congestion by creating prolonged localized bleeding.

The device is a European Medicinal Leech (Hirudo verbana). It is a greenish segmented worm of the Annelida worm classification. The animal is a bloodsucking animal living in freshwater.

An adjunct to the healing of graft tissue when problems of venous congestion may delay healing, or to when problems of venous congestion by creating prolonged localized bleeding.

Medicinal Leeches, a blood sucking aquatic animal living in fresh water and subject to regulation by the U.S. Fish and Wildlife Service, are a preamendment, unclassified device which, by nature of their historical use and documented value in various post surgical situations.