CATHETER FOR REMOVING FOREIGN BODY IN BLOOD VESSEL

• US 20150150589A1
• Filed: 12/01/2014
• Published: 06/04/2015
• Est. Priority Date: 12/03/2013
• Status: Abandoned Application

• Current Assignee: Dai Yamanouchi, Kawasumi Laboratories Incorporated (Sumitomo Bakelite Company Limited)
• Original Assignee: Dai Yamanouchi, Kawasumi Laboratories Incorporated (Sumitomo Bakelite Company Limited)
• Inventors: YAMANOUCHI, Dai
• Application Number:
  US14/556,827
• Publication Number:
  US 20150150589A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 17/320725 with radially expandable cutting or abrading elements A61B17/32075 takes precedence
• CPC Class Codes: A61B 17/32075 Pullback cutting; combined forward and pullback cutting, e.g. with cutters at both sides of the plaque
• CPC Class Codes: A61B 17/320758 with a rotating cutting instrument, e.g. motor driven A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002
• CPC Class Codes: A61B 2017/22001 Angioplasty, e.g. PCTA
• CPC Class Codes: A61B 2017/22072 with an instrument channel, e.g. for replacing one instrument by the other in cannulas A61B17/3417
• CPC Class Codes: A61B 2017/22078 for rotating the instrument within a channel, e.g. an optical fibre
• CPC Class Codes: A61B 2017/22079 with suction of debris
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61B 2017/2215 having an open distal end
• CPC Class Codes: A61B 2017/320716 comprising means for preventing embolism by dislodged material
• CPC Class Codes: A61B 2017/320733 with a flexible cutting or scraping element, e.g. with a whip-like distal filament member
• CPC Class Codes: A61B 2017/320766 eccentric
• CPC Class Codes: A61B 2017/320775 Morcellators, impeller or propeller like means
• CPC Class Codes: A61B 2217/005 with suction drainage system

Abstract

A capturing unit provided on a distal end of a second tube can be deformed into a contracted state and an expanded state, in which the capturing unit is deployed to form a capturing chamber. The capturing chamber has an opening area decreased as it goes from a distal end opening of the capturing chamber toward a proximal end opening of the capturing chamber. A third tube rotatable relative to the second tube and a cutting unit provided on a distal end of the third tube for cutting a foreign substance are arranged in a second lumen. In the expanded state of the capturing unit, the cutting unit is arranged more toward the proximal end opening of the capturing chamber than the distal end opening.

Claims

1. A catheter for removing foreign body in blood vessel, comprising:

a tube that has a lumen; and

a capturing unit that is provided on a distal end of the tube and that has a contracted state, in which the capturing unit is contracted, and an expanded state, in which the capturing unit is expanded to form a capturing chamber;

wherein the catheter further comprise;

a power transmitting member that is arranged in the lumen and that rotates relative to the tube; and

a cutting unit that is provided on a distal end of the power transmitting member for cutting a foreign substance flowed into the capturing unit;

wherein the capturing chamber has an opening area decreased gradually from a distal end opening of the capturing chamber toward a proximal end opening of the capturing chamber; and

in the expanded state of the capturing unit, the cutting unit is arranged more toward the proximal end opening of the capturing chamber than the distal end opening of the capturing chamber.

2. The catheter for removing foreign body in blood vessel according to claim 1,

wherein the power transmitting member is another tube having a lumen;

and

a guide wire is configured to be inserted through the lumen of said another tube.

3. The catheter for removing foreign body in blood vessel according to claim 1,

wherein the power transmitting member is another tube having a lumen;

and

a guide unit which guides a foreign substance into the capturing chamber is configured to be inserted through the lumen of said another tube.

4. The catheter for removing foreign body in blood vessel according to claim 3,

wherein a radiographic marker is provided to check a distance between the guide unit and the cutting unit visually.

5. The catheter for removing foreign body in blood vessel according to claim 1,

wherein the cutting unit is a foldable propeller-shaped member.

6. The catheter for removing foreign body in blood vessel according to claim 5,

wherein unevenness is formed on an inner surface of the capturing chamber along a circumferential direction thereof.

7. The catheter for removing foreign body in blood vessel according to claim 1,

wherein the cutting unit is an expandable meshed member.

8. The catheter for removing foreign body in blood vessel according to claim 1,

wherein the power transmitting member is movable relative to the tube only toward a distal end thereof.