Apparatus for periodically rinsing body cavities, particularly the abdominal cavity

Patent 4252115 Issued on February 24, 1981. Estimated Expiration Date:

December 4, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3520298

3709222

3927955

Flexible tube pump
Patent #: 3942915
Issued on: 03/09/1976
Inventor: Thomas

Fluid-driven motor and fertilizer feeding device utilizing same
Patent #: 4012176
Issued on: 03/15/1977
Inventor: Drori

Roller pump carrying out alternate pumping operations, particularly suited to extra-corporeal blood circulation
Patent #: 4060348
Issued on: 11/29/1977
Inventor: Della Bianca

Apparatus for peritoneal dialysis
Patent #: 4096859
Issued on: 06/27/1978
Inventor: Agarwal , et al.

Obtaining desired flow rate from roller pump despite varying the hose means
Patent #: 4108575
Issued on: 08/22/1978
Inventor: Schal

Method and apparatus for peritoneal dialysis Patent #: 4190047
Issued on: 02/26/1980
Inventor: Jacobsen , et al.

Inventor

Schael, Wilfried

Application

No. 05/966496 filed on 12/04/1978

US Classes:

604/29, Peritoneal dialysis210/649, Diffusing or passing through septum selective as to material of a component of liquid210/929HEMOULTRAFILTRATE VOLUME MEASUREMENT OR CONTROL PROCESSES

Examiners

Primary: Michell, Robert W.
Assistant: Wallen, Thomas

Attorney, Agent or Firm

International Class

A61M 1/28 (20060101)

Foreign Application Priority Data

1977-12-09 DE

Abstract

Apparatus for rinsing body cavities includes a double tube pump (1) for simultaneously pumping fluid into a storage vessel (4) for subsequent feed through a catheter (K) and pumping discharged fluid from a measuring vessel (9) at the same rate, so that surplus fluid with the discharge can be measured. The measuring vessel has sensors (11,12) which switch on and switch off the pump when fluid in the measuring vessel falls or rises to predetermined levels. An additional pump (13) may be provided for the surplus fluid extraction. The double tube pump comprises a pair of parallel identical tubes (24a, 24b) with joined end connections (34,35) in a stator (21) which are squeezed by common rollers (32) mounted in a rotor (27).(FIG. 1)