Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1993-01-15
1995-02-14
Rosenbaum, C. Fred
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604273, A61M 2500
Patent
active
053890914
ABSTRACT:
The present invention is directed to novel methods and apparatus for structurally enhancing a catheter which can be employed to withstand the damaging stresses experienced by catheters implanted in bodily tissues, particularly catheters implanted in the compressed area between the clavicle and first rib of a patient. The enhanced catheter includes a nonmetallic inner tubular sleeve comprised wholly of a compliant material that is inserted in frictional engagement with the interior of the walls of the catheter. The inner sleeve has an outer diameter greater than the inner diameter of the catheter.
The structurally enhanced catheter can be manufactured by immersing a portion of a catheter in freon which causes the immersed portion to swell to have an inner diameter temporarily greater than the outer diameter of the tubular sleeve. Thereafter, the tubular sleeve is advanced site-selectively to a position within the catheter. Finally, the portions of the exposed catheter are allowed to return to their normal size around the inserted reinforcing sleeve.
Alternatively, the structurally enhanced catheter can be manufactured by advancing a reinforcing sleeve site-selectively to a position within the catheter while the catheter is inflated by introducing pressurized gas. The tubular sleeve is oriented on a hollow rod connected to an air pump and moved to the open end of the catheter. This forces air ahead of and around the tubular sleeve, increasing the diameter of the catheter surrounding the reinforcing sleeve so that the reinforcing sleeve may be advanced. After the reinforcing sleeve is in position, the rod is removed and the catheter returns to its normal position frictionally engaging the exterior of the reinforcing sleeve.
REFERENCES:
patent: 2308484 (1943-01-01), Auzin et al.
patent: 2739616 (1956-03-01), Duff
patent: 3010194 (1961-11-01), Fratzke
patent: 3426744 (1969-02-01), Ball
patent: 3485234 (1969-12-01), Stevens
patent: 3630207 (1971-12-01), Kahn et al.
patent: 4291454 (1981-09-01), Sawaryn
patent: 4425919 (1984-01-01), Alston, Jr. et al.
patent: 4431031 (1984-02-01), Ettlinger
patent: 4498473 (1985-02-01), Gereg
patent: 4547193 (1985-10-01), Rydell
patent: 4553959 (1985-11-01), Hickey et al.
patent: 4577543 (1986-03-01), Wilson
patent: 4676229 (1987-06-01), Krasnicki et al.
patent: 4690175 (1987-09-01), Ouchi et al.
patent: 4713049 (1987-12-01), Carter
patent: 4723947 (1988-02-01), Konopka
patent: 4748982 (1988-06-01), Horzewski et al.
patent: 4775371 (1988-10-01), Mueller, Jr.
patent: 4776844 (1988-10-01), Ueda
patent: 4817613 (1989-05-01), Jaraczewski et al.
patent: 4842590 (1989-06-01), Tanabe et al.
patent: 4875468 (1989-10-01), Krauter
patent: 4899787 (1990-02-01), Ouchi et al.
patent: 4900314 (1990-02-01), Quackenbush
patent: 4955862 (1990-09-01), Sepetka
patent: 4973319 (1990-11-01), Melsky
patent: 4994047 (1991-02-01), Walker et al.
patent: 5061257 (1991-10-01), Martinez et al.
D. Aitken, et al., "The `Pinch-Off Sign`: A Warning of Impeding Problems With Permanent Subclavian Catheters", 148 AM. J. Surgery 633-36 (1984).
T. Franey, et al., "Catheter Fracture and Embolization in a Totally Implanted Venous Access Catheter", 12 J. Parenteral and Enteral Nutrition 528-30 (1988).
J. Noyen, et al., "Spontaneous Fracture of the Catheter of a Totally Implantable Venous Access Port: Case Report of a Rare Complication", 5 J. Clinical Oncology 1295-99 1987).
R. Rubenstein, et al., "Hickman Catheter Separation", 9 J. Parenteral and Enteral Nutrition 754-57 (1985).
C. R. Bard Inc.
Rosenbaum C. Fred
Smith Chalin
LandOfFree
Site-selective durability-enhanced catheter and methods of manuf does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Site-selective durability-enhanced catheter and methods of manuf, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Site-selective durability-enhanced catheter and methods of manuf will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-284223