Patent ID: 11944329
Assignee: WELL LEAD CO, LTD
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 12:
13. A device for removing a stone, a stone fragment or a foreign body from a patient comprising:
a suction evacuation assembly which includes a primary sheath and a side arm;
said side arm emanating from the outer surface of said primary sheath;

an obturator which is configured to be inserted into a proximal end of the primary sheath and which extends beyond the distal end of said primary sheath and is releasably secured to the primary sheath;
a pressure regulating mechanism consisting of an opening accessible from the outer surface of said side arm, and extending through said side arm, configured to allow an operator using the device to increase the negative pressure within the device by covering the pressure regulating mechanism or decrease the negative pressure within the device by uncovering the pressure regulating mechanism;
said sheath having a lumen contiguous with a lumen of said side arm;

a flexible cap is releasably secured to the proximal end of the sheath;
a secondary sheath secured to said primary sheath;
said secondary sheath surrounding said primary sheath;
said secondary sheath allows the passage of instruments through the secondary sheath while positioning the distal end of said primary sheath in a position in close proximity to said stones or foreign bodies.