CATHETER ASSEMBLY

• US 20120239073A1
• Filed: 06/05/2012
• Published: 09/20/2012
• Est. Priority Date: 12/20/2007
• Status: Active Grant

• Current Assignee: Ureca B.V.
• Original Assignee: Ureca B.V.
• Inventors: HUBREGTSE, Marc, REMMERSWAAL, Johan
• Granted Patent: US 10,814,096 B2
• Time in Patent Office: Days
• US Class Current: 606/190
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• CPC Class Codes: A61B 17/32056 Surgical snare instruments for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26
• CPC Class Codes: A61B 2017/00252 for by-pass connections, i.e. connections from heart chamber to blood vessel or from blood vessel to blood vessel
• CPC Class Codes: A61B 2017/00269 endoscopic mucosal resection EMR
• CPC Class Codes: A61B 2017/22044 with a pointed tip
• CPC Class Codes: A61B 2017/22094 for crossing total occlusions, i.e. piercing
• CPC Class Codes: A61B 2017/22095 accessing a blood vessel true lumen from the sub-intimal space
• 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: A61M 2025/0081 Soft tip
• CPC Class Codes: A61M 2025/0197 for creating an artificial passage within the body, e.g. in order to go around occlusions
• CPC Class Codes: A61M 25/0082 Catheter tip comprising a tool
• CPC Class Codes: A61M 25/01 Introducing, guiding, advancing, emplacing or holding catheters A61M25/10 takes precedence

Abstract

A catheter assembly provided with a wire arranged therein to form a loop extending from near the effective end of the catheter for bypassing an occlusion in a vein/artery. This loop consists of two wire ends, one of which wire ends extends through the catheter to the control end thereof, while the other wire end is attached thereto, in close proximity to the effective end of the catheter. By varying the relative position of the loop wire end extending from the control end and the control end, the size of the loop and the pushability thereof at the effective end of the catheter can be determined. In this manner, the occlusion can be removed with precise control by the physician using two hands. In addition, the catheter is formed not only for the loop wire end extending through the catheter, but also for incorporating a guide wire and/or for contrast fluids.

Claims

1. A catheter assembly for passing/bypassing an occlusion in veins/arteries, comprising a hollow catheter and a loop wire end arranged therein, said loop wire end extending from an operative end of the catheter, and being arranged in such a manner that it may be pushed further outwardly or inwardly, wherein the rigidity of the catheter and the loop wire end are such that the moveable part of the loop wire end forms a separation and push away loop, said loop forming a bypass when advanced forward in the direction of an occlusion, said loop comprising another wire end, wherein the other loop wire end of said loop supports said catheter.

2. The catheter assembly according to claim 1, wherein the rigidity of the operative end of the catheter is greater than the rigidity of the loop wire end extending from the effective end.

3. The catheter assembly according to claim 1, wherein said support of said other loop wire end comprises an attachment to the catheter.

4. The catheter assembly according to claim 1, wherein said support of said other loop wire end is attached in close proximity to the operative end of said catheter.

5. The catheter assembly according to claim 1, wherein said loop wire end is also supported by said catheter.

6. The catheter assembly according to claim 1, wherein the internals of the catheter are formed so as to incorporate said one moveable loop wire end and guide wire.

7. The catheter assembly according to claim 1, wherein the control end of the catheter of a loop wire end arranged therein is provided with a cooperative position indicator.

8. The catheter assembly according to claim 7, wherein the position indicator has an effective operation of at least several centimeters.

9. The catheter assembly according to claim 1, wherein the lumen of the catheter is formed to enable the passage of contrast fluids.

10. The catheter assembly according to claim 1, wherein said catheter comprises dilatation means.

11. The catheter assembly according to claim 3, wherein said attachment is detachable.

12. The catheter assembly according to claim 1, comprising a loop wire exterior to said tube and freely maneuverable in relation thereto, connected with the effective end, and extending up to the control end.