Patent ID: 8257339
Filing Date: 2012-09-04
Classification: A61M

Abstract:
1. A pneumothorax relief valve method for allowing the passage of air from a pleural cavity while precluding the passage of air into such pleural cavity in a safe, rapid and economical manner comprising, in combination: providing an operative member having a distal end with a cylindrical catheter fabricated of a surgical plastic and a proximal end with an essentially cylindrical hub fabricated of a rigid plastic material, the catheter and the hub having an axial cylindrical interior passageway for the passage of air there through, the hub having an exterior diameter between about 2 and 5 times greater than that of the exterior diameter of the catheter, the proximal end of the hub being open and located in a plane at an angle of about 45 degrees with respect to an imaginary plane extending perpendicularly through the axis of the catheter and the hub, the operative member also including a roll out, open ended flutter valve with a fixed end secured to the exterior diameter of the hub and an extendable end, the roll out, open ended flutter valve adapted to be configured between an inoperative orientation rolled up on the hub and an operative orientation unrolled from the hub for allowing the passage of air from a pleural cavity while precluding the passage of air to such pleural cavity, the catheter being tapered and larger at the proximal end than the distal end; providing a needle fabricated of a surgical steel and having an exterior cylindrical surface with a common diameter and a common linear axis of about 2.5 inches along its entire length adapted to be removably positioned within the interior passageway of the catheter and hub, the needle having a stylet distal end and a proximal end formed with a gripping handle fabricated of a rigid plastic material and of a diameter greater than that of the hub, the distance between the handle and the tip of the needle being greater than the length of the catheter and the hub whereby, when the needle is within the operative member, the pointed stylet distal end of the needle and the tapered catheter form a continuous exterior surface for piercing the chest of a patient so that the needle and operative member are adapted to be inserted and the needle is then adapted to be removed for allowing the operative positioning of the catheter inside a patient and the hub and one way flutter valve outside the patient; providing a cap fabricated of a transparent plastic material and having a cylindrical distal section of a reduced diameter and a length to encompass a minor portion of the needle and a major portion of the catheter when coupled, the cap having a cylindrical proximal section of an enlarged diameter and a length to encompass a major portion of the hub and a minor portion of the needle adjacent to the handle in abutment with the handle, the cap having a conical section coupling the proximal and distal sections encompassing portions of the needle and the hub and the catheter; with the needle positioned within the catheter, and the distal end of the needle extending beyond the distal end of the catheter, inserting the catheter between a second rib and a third rib of a patient suffering from tension pneumothorax until the distal end of the catheter is in a pleural space; withdrawing the needle from the catheter thereby creating an air passageway between the distal end of the catheter and proximal end of the catheter; and unrolling the flutter valve from the hub whereby, when there is no positive air pressure at the distal end of the catheter, the proximal end of the catheter will be covered by the flutter valve at an angle of about 45 degrees with respect to an imaginary plane perpendicular to the axis of the catheter and hub to preclude the escape of air through the catheter; and, whereby when there is positive air pressure at the distal end of the catheter there will be a passageway for air from the distal end of the catheter through the catheter and through the flutter valve to allow the escape of air through the catheter and through the flutter valve.