Programmable antisiphon shunt system

Details Programmable antisiphon shunt system Programmable antisiphon shunt system

1998-05-29

2000-07-18

Polutta, Mark O.

Surgery

Devices transferring fluids from within one area of body to...

With flow control means

604 28, 604 30, 604 93, 604133, A61M 500, A61M 100, A61M 1100

Patent

active

060900628

ABSTRACT:
A surgically implantable shunt system 20 is provided for controlling fluid flow from a relatively high pressure region to a low pressure region. The system 20 includes a rigid housing 22 defining a sealed chamber 24 therewithin, the housing 22 having an inlet port 26 in fluid communication with the high pressure region, and an outlet port 28 in fluid communication with the low pressure region. A conduit 44 extends through the housing 22 from the inlet port 26 to the outlet port 28 and includes a valve 46 disposed within the sealed chamber 24. The valve 46 regulates fluid flow from the high pressure region to the low pressure region, wherein operation of the valve 46 is dependent upon a pressure P.sub.c external to the conduit 44 and within the sealed chamber 24, and is not susceptible to changes in pressure outside the housing 22.

REFERENCES:
patent: 3601128 (1971-08-01), Hakim
patent: 3654932 (1972-04-01), Newkirk et al.
patent: 4103689 (1978-08-01), Leighton
patent: 4281666 (1981-08-01), Cosman
patent: 4364395 (1982-12-01), Redmond et al.
patent: 4537387 (1985-08-01), Danby et al.
patent: 4551128 (1985-11-01), Hakim et al.
patent: 4557721 (1985-12-01), Hooven
patent: 4595390 (1986-06-01), Hakim et al.
patent: 4598579 (1986-07-01), Cummings et al.
patent: 4741730 (1988-05-01), Dormandy, Jr.
patent: 4776838 (1988-10-01), Sainte-Rose et al.
patent: 4776839 (1988-10-01), Doumenis
patent: 4867741 (1989-09-01), Portnoy
patent: 4950232 (1990-08-01), Ruzicka et al.
patent: 5167615 (1992-12-01), East et al.
patent: 5191898 (1993-03-01), Millar
patent: 5192265 (1993-03-01), Drake et al.
patent: 5226886 (1993-07-01), Skakoon et al.
patent: 5281210 (1994-01-01), Burke et al.
patent: 5437627 (1995-08-01), Lecuyer
patent: 5637083 (1997-06-01), Bertrand et al.
patent: 5643195 (1997-07-01), Drevet
patent: 5662600 (1997-09-01), Watson et al.
patent: 5687614 (1997-11-01), Hashimoto et al.
patent: 5928182 (1999-07-01), Kraus et al.
A. Aschoff, et al. "Overdrainage and Shunt Technology", Child Nerv. Syst (1995) 11:193-202.
M. Czosnyka, et al., "Hydrodynamic Properties of Hydrocephalus Shunts: United Kingdom Shunt Evaluation Laboratory".
C. Kadowaki, et al., "CSF Shunt Physics: Factors influencing Inshutn CSF Flow" Child Nerv System (1995) 11:203-206.
R.W.P. Cutler, et al., "Formation and Absorption of Cerebrospinal Fluid in Man" pp. 707-720.
William O. Bell, "Cerebrospinal Fluid Reabsorption" Concepts in Pediatric Neurosurgery, 1990, vol. 10, pp. 214-234.
Albert N. Martins et al., "Dynamics of the cerebrospinal fluid and the spinal dura matter", Journal of Neurology, Neurosurgery and Psychiatry, 1972, 35, 468-473.
Takashi Iwabuchi, et al., "Dural Sinus Pressure as Related to Neurosurgical Positions", Neurosurgery vol. 12, No. 2, 1983, pp. 203-207.
James M. Drake, et al. "Functional Obstruction of an Antisiphon Device by Raised Tissue Capsule Pressure", Neurosurgery, vol. 32, No. 1, Jan. 1993, pp. 137-139.
Marcia C. da Silva, et al., "Effect of Subcutaneous Implantation of Anti-Siphon Devices on CSF Shunt Function", Pediatr Neurosurg 1990-91:16:197-202.
Carol K. Lyon, et al., "Flow through Collapsible Tubes at Low Reynolds Numbers" Circulation Research, vol. 47, No. 1, Jul. 1980, pp. 68-73.
Ascher H. Shapiro, "Steady Flow in Collapsible Tubes", Journal of Biomechanical Engineering, Aug. 1977 99:126-147.
Dali J. Patel, et al., "Basic Hemodynamics and Its role in Disease Processes" pp. 408-424.
Harold D. Portnoy, et al., Anti-siphon and reversible occlusion valves for shunting in hydrocephalus and preventing post-shunt.
S. Pauly "Permeability and Diffusion Data", Polymer Handbook, 1989, vol. 1, pp. 435--449.
Roger D. Kamm, "Flow through Collpasible Tubes" Handbook of Bioengineering, 1987, pp. 23.1--23.17.

Affiliated with

Also associated with

Rating

Programmable antisiphon shunt system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Programmable antisiphon shunt system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Programmable antisiphon shunt system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2031536