Transurethral irrigation pressure controller

• US 4,261,360 A
• Filed: 11/05/1979
• Issued: 04/14/1981
• Est. Priority Date: 11/05/1979
• Status: Expired due to Term

• Current Assignee: Urethral Devices Research Incorporated
• Original Assignee: Urethral Devices Research Incorporated
• Inventors: Perez, Jose A.
• Primary Examiner(s): Yasko, John D.
• Application Number:
  US06/091,579
• Time in Patent Office: 526 Days
• Field of Search: 128/214 E, 128/214 F, 128/230, 128/227, 128/DIG. 12, 128/DIG. 13
• US Class Current: 604/31
• CPC Class Codes: A61M 1/77 Suction-irrigation systems aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463
• CPC Class Codes: A61M 1/777 Determination of loss or gain of body fluids due to suction-irrigation, e.g. during surgery
• CPC Class Codes: A61M 3/0212 after use
• CPC Class Codes: Y10S 128/13 Infusion monitoring

Abstract

The invention corresponds to a device used in conjunction with a resectoscope in endoscopic surgical operations which includes a housing, pumping means, means for controlling, measuring and displaying the speed of said pumping means in order to make corrections in the inflow and outflow rate of irrigating fluid from the patient thereby maintaining a constant distention of the bladder. The device also includes a plurality of audio-visual alarms that alert the operating physician to any abnormal condition.

Claims

1. A device to be used in conjunction with a resectoscope for endoscopic surgical operations capable of monitoring and controlling the outflow and inflow of irrigating fluid to and from the patient, comprising:

(a) a housing including a fluid condenser;

(b) fluid storage means on said housing for holding a supply of irrigating fluid and said storage means including an outlet;

(c) first means for pumping said irrigating fluid including first conduit means connecting the outlet of said storage means to the input of said means for pumping and further including second conduit means connecting the output of said first pumping means to the input of said resectoscope;

(d) second means for pumping said irrigating fluid including third conduit means connecting the output of said resectoscope to the input of said second means for pumping and further including fourth conduit means connecting the output of said second pumping means to said fluid condenser;

(e) means for driving, measuring and controlling said first and second pumping means thereby being able to vary its speed and measure the volume of fluid transmitted through said pump means;

(f) means for measuring the fluid pressure at the output of said resectoscope;

(g) means for measuring the contamination level of said irrigating fluid deposited in said fluid condenser;

(h) means for storing, displaying and comparing said measurements with predetermined parameters;

(i) means for alerting the user that said measurements exceed said predetermined parameters;

(j) means for changing said predetermined parameters; and

(k) fifth conduit means connecting the output of said first pumping means to the input of said second pumping means thereby enabling the ejection of trapped air when the pumps are initially started.

2. The device described in claim 1 wherein said first and second means comprise peristaltic pumps.

3. The device described in claim 2 wherein said means for storing, displaying and comparing said measurements comprises a microprocessor.

4. The device described in claim 3 wherein said means for measuring the contamination level comprises a conductivity cell.

5. The device described in claim 4 wherein said means for measuring the fluid pressure comprises a pressure transducer connected to said third conduit means through a "T" connector.

6. The device as set forth in claim 5 wherein said microprocessor further comprises means for monitoring, controlling and maintaining a constant distention volume inside the patient'"'"'s bladder according to the general formula which outflow from the patient equals inflow plus urine and blood secretions.

7. A device to be used in conjunction with a noncontinuous irrigation or conventinal resectoscope capable of monitoring and controlling the inflow of irrigating fluid to the patient, comprising:

(a) a housing;

(b) fluid storage means on said housing for holding a supply of irrigating fluid and said storage means including an outlet;

(c) first means for pumping said irrigating fluid including first conduit means connecting the outlet of said storage means to the input of said means for pumping and further including second conduit means connecting the output of said first pumping means to the input of said resectoscope;

(d) means for driving, measuring and controlling said first pumping means thereby being capable of varying its speed and measuring the volume of fluid transmitted through said pumping means;

(f) means for storing and displaying said measurements of volume and speed and comparing it with predetermined parameters; and

(g) means for changing said predetermined parameters.