Patent ID: 11871977
Assignee: CSA MEDICAL, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 11:
12. A catheter extension control assembly comprising:
a first interior tubular member comprising a proximal portion, a distal portion, a lumen, and a sidewall having an outer surface at least partially surrounding the lumen, wherein the first interior tubular member is a tubular portion of a catheter or is configured to be attached to a catheter that is received in the lumen of the first interior tubular member, the catheter comprising a distal end, the first interior tubular member including at least one first attachment feature in said outer surface;
a second exterior tubular member having a length, a proximal portion, a distal portion configured with an endoscope, a lumen extending the length of the second exterior tubular member, and a sidewall having an inner surface and an outer surface at least partially surrounding the lumen of the second exterior tubular member, wherein at least a portion of the lumen of the second exterior tubular member is configured to receive at least a portion of the first interior tubular member, and wherein the inner surface of the sidewall of the second exterior tubular member comprises at least one second attachment feature that is complimentary to the first attachment feature, the at least one second attachment feature positioned at a location on the second exterior tubular member so that, when the at least one first attachment feature in the first interior tubular member mates with the at least one second attachment feature, the distal end of the catheter is positioned a predetermined minimum distance away from the endoscope at the distal portion of the second exterior tubular member; and
a cryogen delivery catheter received in the lumen of the first interior tubular member, wherein the first interior tubular member is attached to the cryogen delivery catheter.