Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1988-03-16
1989-07-25
Truluck, Dalton L.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604 53, 128343, 128658, A61M 500
Patent
active
048509752
ABSTRACT:
A catheter introducer for angiography is disclosed which comprises a sheath for inserting and guiding a catheter into a puncture hole in a blood vessel, and a dilator removably inserted through the sheath for receiving an introduction guide wire for the catheter. A front end of the dilator is provided with a forwardly descending conical taper surface for smoothly expanding the puncture hole. A rear end of the dilator is formed with a hub which extends therefrom for preventing the slip-off of the sheath. The sheath has a hollow hub which extends from the rear end thereof. The hub is connected for communication to a medical liquid injecting tube which is equipped with an on-off valve for injecting a heparin-containing physiological salin solution or other medical liquids for preventing blood coagulation. The outer diameter of a portion of the dilator subsequent to a forwardly descending taper surface is greater than the inner diameter of the sheath. A slit for contracting the outer diameter is cut in the dilator to extend longitudinally along the dilator in the form of a line segment of a given length such that an opening front end of the dilator is positioned on the forwardly descending taper surface and an opening rear end of the dilator is limited from reaching a sheath slip-off preventing hub of the dilator. The dilator is inserted through the sheath while being forcibly contracted to cause the slit to close. The dilator is intimately contacted with the inner wall surface of the sheath.
REFERENCES:
patent: 4411655 (1983-10-01), Schreck
patent: 4451256 (1984-05-01), Weikl et al.
patent: 4498902 (1985-02-01), Ash et al.
patent: 4610674 (1986-09-01), Suzuki et al.
patent: 4619644 (1986-10-01), Scott
patent: 4629450 (1986-12-01), Suzuki et al.
patent: 4699611 (1987-10-01), Bowden
LandOfFree
Catheter introducer for angiography does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Catheter introducer for angiography, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catheter introducer for angiography will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2355149