CATHETER APPARATUS

• US 20130060276A1
• Filed: 05/25/2011
• Published: 03/07/2013
• Est. Priority Date: 05/25/2010
• Status: Active Grant

• Current Assignee: Access Point Technologies, Inc.
• Original Assignee: Access Point Technologies, Inc.
• Inventors: Hocking, Gordon Donald
• Granted Patent: US 9,750,518 B2
• Time in Patent Office: Days
• US Class Current: 606/200
• 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 2017/22038 with a guide wire
• CPC Class Codes: A61B 2017/22084 stone- or thrombus-dissolving
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting

Abstract

To provide a catheter apparatus capable of performing removal of an embolus such as a thrombus, administration of a drug, etc. and sampling of body fluid such as blood at the same time inside a lumen of the human body, the catheter apparatus has a catheter 10 that is inserted into a lumen of the human body, a branch portion 40 which is connected to a base end portion 12 of the catheter 10 and is provided with an insertion hole to pass a guide wire used in inserting the catheter 10 in the lumen of the human body, and liquid introducing means 30 for introducing liquid such as a drug solution into the catheter 10 through a tube 34 connected to the branch portion 40, where at a front end 11 of the catheter 10 is disposed embolus trapping means 20 for trapping an embolus inside the lumen of the human body.

Claims

1. A catheter apparatus comprising:

a catheter that is inserted into a lumen of the human body;

a branch portion which is connected to a base end portion of the catheter and is provided with an insertion hole to pass a guide wire used in inserting the catheter in the lumen of the human body; and

liquid introducing means for introducing liquid such as a drug solution into the catheter through a tube connected to the branch portion,

wherein at a front end of the catheter is disposed embolus trapping means for trapping an embolus inside the lumen of the human body.

2. The catheter apparatus according to claim 1, wherein the embolus trapping means is formed of a net member that is opened and closed in the shape of a parachute by a distance between opposite ends thereof reducing and increasing,

one end of the opposite ends is tied and fixed to the catheter, and the other end is tied to be able to slide on the surface of the catheter.

3. The catheter apparatus according to claim 2, wherein the slidable other end in the embolus trapping means is disposed on the front end side of the catheter, and is formed so that the net member opens to trap an embolus in inserting the catheter in the lumen of the human body.

4. The catheter apparatus according to claim 1, wherein the embolus trapping means is formed of one having elasticity or shape memory characteristic of a nickel titanium wire, a titanium wire, a wire of complex material of a wire made of platinum or gold and nickel titanium alloy, a nickel wire provided with gold plating, and a wire of titanium alloy.

5. The catheter apparatus according to claim 1, wherein the branch portion is provided with the insertion hole to insert the guide wire to be inserted in the catheter, and seal means for preventing the liquid supplied through the tube from leaking from the insertion hole.

6. The catheter apparatus according to claim 5, wherein the liquid introducing means is provided with an introduction opening to introduce the liquid into the catheter through the tube,

a delivery opening to deliver body fluid such as blood to the outside through the catheter and the tube, and a switch portion provided with a valve for enabling switching of a circulation state between the catheter and the introduction opening or the delivery opening.

7. The catheter apparatus according to claim 6, wherein the catheter and the delivery opening are communicated with each other by the switch portion, and by applying a negative pressure to the delivery opening, the body fluid such as blood is extracted from the delivery opening to the outside.