Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1988-12-19
1992-03-24
Rosenbaum, C. Fred
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
128DIG26, 623 12, A61M 532
Patent
active
050983989
DESCRIPTION:
BRIEF SUMMARY
The invention relates to an implant passageway for connection of body cavities or body vessels to a device, container or the like externally of the body, comprising an element which consists of a biocompatible material or has a biocompatible outside layer and which includes a socket with a through passage.
Such an implant passageway can be used e.g. for establishing a permanent connection to the abdomen of persons who from time to time have to be subject to e.g. peritoneal dialysis, or for establishing a temporary connection to a body cavity. The difficulty when arranging an implant passageway is above all that the epithelium cells grow along the passageway, rejection from the body being the consequence thereof.
This difficulty is overcome by the implant passageway of the invention having obtained the characteristics of claim 1.
In order to explain the invention in more detail an embodiment thereof will be described below, reference being made to the accompanying drawing in which
FIG. 1 is a fragmentary axial sectional view of an implant passageway of the invention in one embodiment thereof,
FIG. 2 is a perspective view on a reduced scale of the element of the implant passageway of FIG. 1 which is to be positioned partly under the skin,
FIG. 3 is a perspective view showing the implanted passageway,
FIG. 4 is a fragmentary axial sectional view of another embodiment of the implant passageway,
FIG. 5 is a fragmentary axial sectional view of a third embodiment of the implant passageway, and
FIG. 6 is a perspective sectional view of the implant passageway of FIGS. 1 to 3 slightly modified.
In the embodiment of FIGS. 1, 2, and 3, the implant passageway comprises an element 10 which is to be implanted in the tissue under the skin. This element should be made of a biocompatible material or should at least be coated with such material on the surface thereof. The material can be a metal or a metal alloy. The preferred metal is titanium, but also aluminium, indium, zirkonium and molybdenum can be used in this connection, and suitable alloys can contain cobalt-nickel-chromium, cobalt-chromium-molybdenum, or aluminium-vanadium-titanium. Also biocompatible polymers can be used such as polyethylene, silicone, or polyurethane of the highest medical quality. When the element is coated with one of the metals or metal alloys mentioned above on the outside thereof, the coating can be made by evaporation in vacuum and can have a thickness of the order of 50 to 300 nm.
The element 10 comprises a circular base plate 11 having through apertures 12. On the base plate, a central socket 13 is provided which forms a through cylindrical passage. The socket projects from the upper side of the plate 11 and the outer end of the socket can be shaped for connection e.g. to a hose, or for connection to a container, a plastic bag, a syringe, or any other device. Adjacent the outer end the socket has a portion 15 having a smooth curved surface. Said portion tapers slightly towards the outer end and has curved end edges, a number of flanges 16 with apertures 17 being arranged inwardly of portion 15. The flanges are spaced radially from each other and define peripheral grooves between radial surfaces. At the outer edge the base plate 10 has a circumferential apertured fence 18 which is thus spaced from the socket 13 so that there is provided on the upper side of the base plate an annular free zone 19 between the socket and the fence. The fence as shown here forms a ring supported by uprights, and this ring can have round cross-sectional shape as in FIG. 1 or square cross-sectional shape as in FIG. 2.
When the element 10 is implanted on a human being or on an animal, portion 15 of the socket 13 extends through the epithelium layer 20, the flanges 16, the base plate 11, and the fence 18 being located under the epithelium layer. Then, the connective tissue around the element can grow into the space between the flanges 16 and through the apertures 17 therein, and it can also grow through the apertures 12 in the base plate 11 and around the fence 18
REFERENCES:
patent: 3663965 (1972-05-01), Lee, Jr. et al.
patent: 3752162 (1973-08-01), Newash
patent: 4015601 (1977-04-01), Bokros et al.
patent: 4217664 (1980-08-01), Faso
patent: 4425119 (1984-01-01), Berglund
patent: 4534760 (1985-08-01), Raible
patent: 4534761 (1985-08-01), Raible
patent: 4704126 (1987-11-01), Baswell et al.
patent: 4781176 (1988-11-01), Ravo
patent: 4781694 (1988-11-01), Branemark et al.
Daley Kathleen A.
Rosenbaum C. Fred
LandOfFree
Implant passageway does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Implant passageway, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Implant passageway will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2006326