BALLOON CATHETER

• US 3,825,013 A
• Filed: 03/12/1973
• Issued: 07/23/1974
• Est. Priority Date: 03/12/1973
• Status: Expired due to Term

• Current Assignee: William J. Craven
• Original Assignee: William J. Craven
• Inventors: Craven, William J.
• Primary Examiner(s): Truluck, Dalton L.
• Application Number:
  US05/340,041
• Time in Patent Office: 498 Days
• Field of Search: 128/348,349B,349BV,35R,351,344,325,246
• US Class Current: 604/99.01
• CPC Class Codes: A61M 2025/0063 having means, e.g. stylets, mandrils, rods or wires to reinforce or adjust temporarily the stiffness, column strength or pushability of catheters which are already inserted into the human body
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00
• CPC Class Codes: A61M 25/10181 Means for forcing inflation fluid into the balloon

Abstract

This invention relates to an improved balloon catheter of the type including an elongated flexible tubular member having a drainage lumen formed therein. An inflatable balloon member is attached to the tubular member at its distal end and a passage is formed in the tubular member for inflating and deflating the balloon member from the proximal end of the tubular member. A second passage is provided with a removable plug disposed therein communicating the interior of the balloon member with the proximal end of the tubular member so that deflation of the balloon member can be positively indicated and accomplished by way of the second passage.

Claims

1. An improved balloon catheter which comprises:

an elongated flexible tubular member having a drainage lumen formed therein connected between the proximal end thereof and at least one drainage inlet formed in the distal end thereof;

an inflatable balloon member positioned adjacent the distal end of said tubular member and attached thereto in a manner such that when inflated said balloon member is distended in directions generally normal to the axis of said tubular member;

a first passage formed in said tubular member connecting the interior of said balloon member with the proximal end of said tubular member so that an inflating flud can be selectively injected through the first passage into the balloon member or withdrawn therefrom;

a second passage formed in said tubular member connecting the interior of said balloon member with the proximal end of the tubular member so that deflation of the balloon member can be indicated and accomplished by way of the second passage; and

an elongated string member disposed within and along the entire length of the second passage, the string member sealing the passage while disposed therein, but opening the passage when extracted therefrom.

2. The improved catheter of claim 1 wherein the first passage opens into a closed divergent tube attached to said tubular member adjacent the proximal end thereof.

3. The improved catheter of claim 2 wherein the tubular member is formed of natural latex rubber and the string member is formed of nylon.

4. In a balloon catheter which includes an elongated flexible tubular member having a drainage lumen formed therein connecting the proximal end thereof with at least one drainage inlet at the distal end thereof, an inflatable balloon member positioned and attached to the tubular member adjacent the distal end thereof and a first passage formed in the tubular member connecting the interior of the balloon member with the proximal end of the tubular member so that an inflating fluid can be selectively injected through the passage into the balloon member or withdrawn therefrom, thE improvement which comprises:

said tubular member including a second passage formed therein connecting the interior of the balloon member with the proximal end of the tubular member so that deflation of the balloon member can be indicated and accomplished by way of the second passage; and

an elongated string member disposed within and along the entire length of the second passage, said string member sealing the passage when disposed therein, but opening the passage upon extraction therefrom.

5. The catheter of claim 1 wherein the tubular member is formed of natural latex rubber and the string member is formed of nylon.