Liquid conveying catheter

Claim 2

A liquid conveying catheter for conveying a liquid from an object from which the liquid is to be collected, the catheter comprising: a collecting tube having an insert end adapted to be inserted into the object for sucking a liquid; a mixing bar extending through the collecting tube and rotatably supported; and a drive unit for rotating the mixing bar, wherein the collecting tube has a helical convex on its inner wall around the center axis of the collecting tube, so as to define a helical groove serving as a flow path.

Claim 3

A liquid conveying catheter for supplying a liquid and collecting a liquid to/from an object, the catheter comprising: a supply tube having an insert end adapted to be inserted into the object for discharging the liquid; a collecting tube having an insert end adapted to be inserted into the object simultaneously with the supply tube, for sucking the liquid; a mixing bar extending through the collecting tube and rotatably arranged; and a drive unit for rotating the mixing bar, wherein the collecting tube has a helical convex on its inner wall around the center axis of the collecting tube, so as to define a helical groove, serving as a flow path.

Claim 4

A liquid conveying catheter for supplying a liquid and collecting a liquid to/from an object, the catheter comprising: a supply tube having an insert end adapted to be inserted into the object for discharging the liquid; a collecting tube having an insert end adapted to be inserted into the object simultaneously with the supply tube, for sucking the liquid; a mixing bar extending through the collecting tube and rotatably arranged; and a drive unit for rotating the mixing bar, wherein the collecting tube has a helical convex on its inner wall around the center axis of the collecting tube, so as to define a helical groove, serving as a flow path.

Claim 5

A liquid conveying catheter as claimed in claim 1 , wherein the helical convex is formed by a coil-shaped member fixed to the inner wall of the collecting tube.

Claim 6

A liquid conveying catheter as claimed in claim 2 , wherein the helical convex is formed by a coil-shaped member fixed to the inner wall of the collecting tube.

Claim 7

A liquid conveying catheter as claimed in claim 3 , wherein the coil-shaped member protrudes from the insert end of the collecting pipe in the insert direction.

Claim 8

A liquid conveying catheter as claimed in claim 4 , wherein the coil-shaped member protrudes from the insert end of the collecting pipe in the insert direction.

Claim 9

A liquid conveying catheter as claimed in claim 1 , wherein a plurality of through holes are provided at the insert end portion of the collecting tube.

Claim 10

A liquid conveying catheter as claimed in claim 2 , wherein a plurality of through holes are provided at the insert end portion of the collecting tube.

Claim 11

A liquid conveying catheter as claimed in claim 3 , wherein a plurality of through holes are provided at the insert end portion of the collecting tube.

Claim 12

A liquid conveying catheter as claimed in claim 4 , wherein a plurality of through holes are provided at the insert end portion of the collecting tube.

Claim 13

A liquid conveying catheter as claimed in claim 1 , wherein the mixing bar has an elliptical cross section.

Claim 14

A liquid conveying catheter as claimed in claim 2 , wherein the mixing bar has an elliptical cross section.

Claim 15

A liquid conveying catheter as claimed in claim 3 , wherein the mixing bar has an elliptical cross section.

Claim 16

A liquid conveying catheter as claimed in claim 4 , wherein the mixing bar has an elliptical cross section.

Claim 17

A liquid conveying catheter as claimed in claim 1 , wherein the mixing bar has a circular cross section and has a helical convex formed around the external surface of the mixing bar.

Claim 18

A liquid conveying catheter as claimed in claim 2 , wherein the mixing bar has a circular cross section and has a helical convex formed around the external surface of the mixing bar.

Claim 19

A liquid conveying catheter as claimed in claim 3 , wherein the mixing bar has a circular cross section and has a helical convex formed around the external surface of the mixing bar.

Claim 20

A liquid conveying catheter as claimed in claim 4 , wherein the mixing bar has a circular cross section and has a helical convex formed around the external surface of the mixing bar.

Claim 21

A liquid conveying catheter as claimed in claim 2 , wherein the supply tube has: a helical convex on its inner wall around the center axis of the supply tube, so as to define a helical groove; and a mixing bar extending through the supply tube and rotatably supported and provided with a drive unit for rotating the mixing bar.

Claim 22

A liquid conveying catheter as claimed in one of the foregoing Claims, wherein a suction pump is provided at the insert end and opposite end of the collecting tube.