Abstract Drainage catheter, comprising a tube-like basic body (2) with mutually separated pressure channel (3) and discharge channel (4), connecting means at a rear end for connecting said pressure channel and said discharge channel to respectively a source of liquid under pressure and discharge means. At the oppositely located front end said discharge channel is provided with an inlet opening (9), formed in a side wall of said basic body, said pressure channel bending back at the front end in the direction towards the rear end and a spray nozzle (16) being arranged in said front end of said discharge channel such that it can direct a liquid jet inside said discharge channel along said inlet opening, such that a suction of said inlet opening is created due to ejector action.
Drainage catheter, comprising a tube-like basic body with mutually separated pressure channel and discharge channel, connecting means at a rear end for connecting said pressure channel and said discharge channel to respectively a source of liquid under pressure and discharge means and wherein at the oppositely located front end said discharge channel is provided with an inlet opening, formed in a side wall of said basic body, said pressure channel bending back at the front end in the direction towards the rear end and a spray nozzle being arranged in said front end of said discharge channel such that it can direct a liquid jet inside said discharge channel along said inlet opening, such that a suction at said inlet opening is created due to ejector action.
Claim 2
Dependent Claim
41 words
Catheter as claimed in claim 1, wherein close to the front end at least one narrow passage opening is formed on a side remote from the inlet opening in an outer wall portion of the basic body bounding the pressure channel.
Claim 3
Dependent Claim
21 words
Catheter as claimed in claim 2, wherein a narrow passage opening is formed in the leading end face of the catheter.
Claim 4
Dependent Claim
34 words
Drainage catheter as claimed in claim 1 comprising at the front end a metal U-shaped tubel sealingly engaging with one leg in said pressure channel and with a second leg in said discharge channel.
Claim 5
Dependent Claim
28 words
Drainage catheter as claimed in claim 4, wherein said second leg of said U-shaped tube is narrowed toward its free end so as to form a jet nozzle.
Claim 6
Dependent Claim
31 words
Assembly of a drainage catheter according to one of the preceding claims, a source of liquid under pressure connected to said pressure channel and a syringe connected to said discharge channel.