Method and apparatus for dissolving renal calculi

• US 3,316,910 A
• Filed: 12/20/1963
• Issued: 05/02/1967
• Est. Priority Date: 12/20/1963
• Status: Expired due to Term

• Current Assignee: Thomas A. Davis
• Original Assignee: Thomas A. Davis
• Inventors: Davis, Thomas A.
• Application Number:
  US04/332,134
• Time in Patent Office: 1,229 Days
• US Class Current: 604/28
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00

Claims

1. THE METHOD OF DISSOLVING RENAL CALCULI, COMPRISING (A) PREPARING A VOLUME OF CALCULUS SOLVENT PREDETERMINED NOT TO SUBSTANTIALLY EXCEED THE CAPACITY OF THE RENAL PELVIX CAVITY TO BE TREATED, (B) INTRODUCING SAID PREDETERMINED VOLUMES OF SOLVENT INTO THE RENAL PELVIS CAVITY, (C) RETAINING SAID SOLVENT IN THE RENAL PELVIS CAVITY FOR A PERIOD OF TIME SUFFICIENT TO EFFECT AT LEAST PARTIAL DISSOLUTION OF THE CALCULI, (D) SIMULTANEOUSLY WITH SAID RETENTION PERIOD PREPARING ANOTHER OF SAID PREDETERMINED VOLUMES OF SOLVENT FOR SUBSEQUENT INTRODUCTION INTO THE RENAL PELVIS CAVITY, (E) REMOVING THE FIRST NAMED VOLUME OF SOLVENT FROM THE RENAL PELVIS CAVITY, AND (F) REPEATING THE STEPS OF INTRODUCING, RETAINING, PREPARING AND REMOVING SUBSEQUENT BATCHES OF SAID PREDETERMINED VOLUME OF SOLVENT UNTIL THE DESIRED CALCULI DISSOLUTION IS EFFECTED.

2. APPARATUS FOR DISSOLVING RENAL CALCULI, COMPRISING (A) A CALCULUS SOLVENT MEASURING CONTAINER ADAPTED TO RECEIVE CALCULUS SOLVENT MEASURING CONTAINER ADAPTED TO (B) LEVEL CONTROL MEANS ASSOCIATED WITH THE MEASURING CONTAINER FOR MAINTAINING SOLVENT IN THE LATTER AT A PREDETERMINED LEVEL, (C) A CALCULUS SOLVENT DISPENSING CONTAINER, (D) FIRST CONDUIT MEANS INTERCONNECTING THE MEASURING CONTAINER AND DISPENSING CONTAINER FOR DELIVERING SOLVENT FROM THE MEASURING CONTAINER TO THE DISPENSING CONTAINER, (E) MEANS SUPPORTING THE MEASURING AND DISPENSING CONTAINERS FOR RELATIVE VERTICAL ADJUSTMENT FOR ADJUSTING THE HEIGHT TO WHICH THE DISPENSING CONTAINER IS TO BE FILLED WITH SOLVENT, WHICH HEIGHT PROVIDED IN THE DISPENSING CONTAINER A VOLUME OF SOLVENT PREDETERMINED NOT TO SUBSTANTIALLY EXCEED THE CAPACITY OF A RENAL PELVIS CAVITY TO BE TREATED, (F) A URETERAL CATHETER, (G) SECOND CONDUIT MEANS INTERCONNECTING THE DISPENSING CONTAINER AND THE CATHETER FOR DELIVERING SAID PREDETERMINED VOLUME OF SOLVENT IN THE DISPENSING CONTAINER TO THE RENAL PELVIS TO BE TREATED, (H) FLOW RESTRICTING MEANS ASSOCIATED WITH THE FIRST CONDUIT MEANS FOR RESTRICTING THE FLOW OF SOLVENT FROM THE MEASURING CONTAINER TO THE DISPENSING CONTAINER TO A MAGNITUDE SUBSTANTIALLY LESS THAN THE FLOW OF SOLVENT FROM THE DISPENSING CONTAINER TO THE CATHETER, (I) DRAIN CONDUIT MEANS COMMUNICATING WITH THE CATHETER FOR DRAINING SOLVENT FROM THE RENAL PELVIS CAVITY, AND (J) CONTROL VALVE MEANS IN THE SECOND CONDUIT MEANS AND DRAIN CONDUIT MEANS FOR SELECTIVELY OPENING AND CLOSING SAID CONDUIT MEANS, (K) THE CONTROL VALVE MEANS IN THE SECOND CONDUIT MEANS FUNCTIONING IN ONE POSITION OF ADJUSTMENT TO OPEN THE SECOND CONDUIT MEANS TO DISCHARGE THE CONTENTS OF THE DISPENSING CONTAINER INTO THE RENAL PELVIS CAVITY AND IN A SECOND POSITION OF ADJUSTMENT TO CLOSE SAID SECOND CONDUIT MEANS AND PERMIT FILLING OF THE EMPTIED DISPENSING CONTAINER WITH SOLVENT FROM THE MEASURING CONTAINER AUTOMATICALLY TO SAID PREDETERMINED VOLUME.