Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1992-03-03
1994-12-20
Green, Randall L.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
609178, 609256, 609283, 609284, A61M 532
Patent
active
053742540
ABSTRACT:
Medical devices are disclosed which are adapted for indwelling placement in a patient. In one device, a flexible tubular catheter is adapted for placement with its distal end inside of the body and its proximal end outside of the body, and defines a lumen which provides a fluid passageway between its proximal and distal ends. The flexible tubular member has multiple engagement elements located on its outside surface, and an external bolster is provided which includes multiple engagement elements complementary to the engagement elements located on the tubular catheter for adjustably coupling the bolster and the tubular catheter. After placement, the bolster locks to the tubular member such that the bolster can rest securely close to the skin surface. In a first disclosed embodiment, a compression element locks the bolster to the tubular member after selective positioning of the bolster onto the tubular member. In a second embodiment, the bolster has a curved passageway which opens to a side port, and the bolster lumen has engagement elements about the curved passageway which are complementary to the engagement elements located on the tubular member. The bolster is locked into position by the tension between engaged engagement elements caused by the bending of the flexible tubular member in the curved passageway within the side-port bolster. In this way, the bolster is capable of being selectively positioned and locked onto the tubular member to allow the bolster to rest closely to the skin surface without requiring an additional compression element.
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Redo et al, "A Stainless Steel Cannula for the Creation of Gastrointestinal Fistulas", 1954, 4 pages.
Green Randall L.
Reichle K. M.
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