Barriers and methods for pressure measurement catheters

Details Barriers and methods for pressure measurement catheters Barriers and methods for pressure measurement catheters

2002-10-15

2008-03-18

Marmor, II, Charles A. (Department: 3735)

Surgery

Diagnostic testing

Measuring fluid pressure in body

C600S030000, C600S486000

Reexamination Certificate

active

07344505

ABSTRACT:
Methods and apparatus of the present invention provide viscoelastic barrier materials for use as barriers in devices such as pressure measurement catheters. Improved barrier materials sometimes include at least one barrier material precursor combined with an amount of a softener. In other embodiments, two barrier material precursor components are combined without a softener to provide a fully cross-linked barrier material having certain softness characteristics. In various embodiments, a softener may be dimethyl silicone oil and may be combined with a barrier material precursor in an amount of between about 25% and about 45% by weight, relative to the final barrier material. Once a viscoelastic barrier material is prepared, it may be placed in a pressure transmission catheter or similar device, for example by injecting the gel into a lumen of the catheter via a syringe. Barrier materials of the present invention have one or more advantageous properties, such as a desired softness, full cross-linking, resistance to washout from a catheter, enhanced stability and/or the like.

REFERENCES:
patent: 3832253 (1974-08-01), Di Palma et al.
patent: 3847848 (1974-11-01), Beer
patent: 4196731 (1980-04-01), Laurin et al.
patent: 4549879 (1985-10-01), Groshong et al.
patent: 4753640 (1988-06-01), Nichols et al.
patent: 4755554 (1988-07-01), Itoh et al.
patent: 4846191 (1989-07-01), Brockway et al.
patent: 5061481 (1991-10-01), Suzuki et al.
patent: 5431628 (1995-07-01), Millar
patent: 5487760 (1996-01-01), Villafana
patent: 5519082 (1996-05-01), Yoshino
patent: 5535752 (1996-07-01), Halperin et al.
patent: 5810735 (1998-09-01), Halperin et al.
patent: 5902248 (1999-05-01), Millar et al.
patent: 5904708 (1999-05-01), Goedeke
patent: 5948539 (1999-09-01), Paulsen et al.
patent: 5993395 (1999-11-01), Shulze
patent: 6019729 (2000-02-01), Itoigawa et al.
patent: 6033366 (2000-03-01), Brockway et al.
patent: 6053873 (2000-04-01), Govari et al.
patent: 6080605 (2000-06-01), Distefano et al.
patent: 6203898 (2001-03-01), Kohler et al.
patent: 6296615 (2001-10-01), Brockway et al.
patent: 6413536 (2002-07-01), Gibson et al.
patent: 6423322 (2002-07-01), Fry
patent: 6857932 (2005-02-01), Chen
patent: 2001/0037067 (2001-11-01), Tchou et al.
patent: 2002/0013614 (2002-01-01), Thompson
patent: 2002/0028999 (2002-03-01), Schaldach et al.
patent: 2002/0077553 (2002-06-01), Govari et al.
patent: 2002/0077554 (2002-06-01), Schwartz et al.
patent: 2002/0077671 (2002-06-01), Govari et al.
patent: 2002/0091332 (2002-07-01), Bombardini
patent: 2002/0095196 (2002-07-01), Linberg
patent: 2002/0099302 (2002-07-01), Bardy
patent: 2002/0115939 (2002-08-01), Mulligan et al.
patent: 2002/0120200 (2002-08-01), Brockway et al.
Brockway et al., “A new method for continuous chronic measurement and recording of blood pressure, heart rate and activity in the rat via radio-telemetry”Clinical and Experimental Hypertension(1991) A13(5): 885-895.
Sato et al., “Evaluation of a new method using telemetry for monitoring the left ventricular pressure in free-moving rates”Journal of Pharmacological and Toxicological Methods(1994) 31(4):191-198.
Van Den Buuse, “Circadian rhythums of blood pressure, heart rate, and locomotor activity in spontaneously hypertensive rats as measured with radio-telemetry”Physiology&Behavior(1994) 55(4):783-787.

Affiliated with

Also associated with

Rating

Barriers and methods for pressure measurement catheters does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Barriers and methods for pressure measurement catheters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Barriers and methods for pressure measurement catheters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3975702