Claims for Patent: 8,939,962

Summary for Patent: 8,939,962

Title:	System and method for urinary catheterization
Abstract:	The embodiments herein provide an atraumatic urinary catheter. The atraumatic urinary catheter has a first tubule, a second tubule and a third tubule. The first tubule is provided with a first channel and a second channel. The first channel is wide and extended from a proximal end to a distal end of the first tubule and the first channel is open in both ends. The second tubule comprises a third channel, which is connected to a bladder cavity. The third tubule placed on the first tubule and the second tubule as a cover, to form a catheter\'s balloon. In order to avoid balloon explosion, the sterile water in the balloon is drained by the self-retaining mechanism of the catheter to prevent an irritation and tissue traumatization.
Inventor(s):	Azar; Ramyar (Tehran, IR)
Assignee:
Application Number:	14/101,634
Patent Claims:	1. An atraumatic urinary catheter, the catheter comprising: a first tubule comprising a first channel and a second channel, and wherein the first channel is wide and extended from a proximal end of the first tubule to a distal end of the first tubule, and wherein the first channel is open in both ends; a second tubule comprising a third channel, and wherein the third channel of the second tubule is configured to communicate with a bladder cavity; and a third tubule placed on the first tubule and the second tubule as a cover, and wherein the third tubule produces a catheter balloon; wherein a self-retaining mechanism is formed in the third tubule at a junction of the first tubule and the second tubule in a catheter balloon cavity, and wherein the self-retaining mechanism is formed by placing a thin distal end of the first channel of the first tubule inside a wide proximal end of the third channel of the second tubule to cover both the first tubule and the second tubule within the third tubule, and wherein the thin distal end of the first channel of the first tubule of the self-retaining mechanism is detached from the wide proximal end of the third channel of the second tubule to deflate the catheter balloon when a pressure of the catheter balloon rises to a pre-set point, and wherein the first channel of the first tubule and the third channel of the second tubule are connected together to produce a main longitudinal channel within the catheter, and wherein the main longitudinal channel extends from the proximal end of the first tubule to a first hole, and wherein urine is drained from bladder through the first hole, and wherein the self retaining mechanism opens or activates only, when the thin distal end of the first channel of the first tubule of the self-retaining mechanism is completely separated or detached from the wide proximal end of the third channel of the second tubule to deflate the catheter balloon. 2. The catheter according to claim 1, wherein the second channel of the first tubule is thin, and wherein the second channel is connected to the catheter balloon, and wherein the catheter balloon is filled with sterile water through the second channel. 3. The catheter according to claim 1, wherein the third tubule is connected to the first tubule and the second tubule except at a junction of the first tubule and the second tubule, and wherein the catheter balloon is produced by a part of the third tubule at the junction of the first tubule and the second tubule. 4. The catheter according to claim 1, wherein the second channel of the first tubule is a filling channel adopted in an inner side wall of the first tubule, and wherein the second channel is extended from the proximal end of the first tubule to a second hole, and wherein the second hole is connected to the balloon cavity for filling sterile water. 5. The catheter according to claim 1, wherein the pressure of balloon cavity rises suddenly when the catheter is pulled off and the balloon is inflated in the bladder, and wherein the pressure of balloon cavity forces the distal end of the first tubule to detach from the second tubule allowing the sterile water inside the balloon cavity to be drained by the first channel of the first tubule and the third channel of the second tubule.

Details for Patent 8,939,962

Applicant	Tradename	Biologic Ingredient	Dosage Form	BLA	Approval Date	Patent No.	Expiredate
Merck Sharp & Dohme Corp.	ZOSTAVAX	zoster vaccine live	For Injection	125123	05/25/2006		2039-09-22