IVC filter catheter with imaging modality

• US 9,039,728 B2
• Filed: 01/07/2013
• Issued: 05/26/2015
• Est. Priority Date: 08/31/2007
• Status: Active Grant

• Current Assignee: Mermaid Medical Vascular ApS
• Original Assignee: Bio2 Medical Inc.
• Inventors: Angel, Luis F., Steinmetz, Jeffrey N., Sims, Daniel D.
• Primary Examiner(s): Nguyen, Victor
• Assistant Examiner(s): EVERAGE, KEVIN D
• Application Number:
  US13/735,810
• Publication Number:
  US 20130190803A1
• Time in Patent Office: 869 Days
• Field of Search: 606/200, 606/127, 606/128, 604/106, 604/107, 604/108, 623/1.11
• US Class Current: 606/200
• CPC Class Codes: A61B 1/00133 Drive units for endoscopic tools inserted through or with the endoscope
• CPC Class Codes: A61B 1/0125 Endoscope within endoscope
• 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 2017/00296 mounted on an endoscope
• CPC Class Codes: A61B 2090/3966 Radiopaque markers visible in an X-ray image
• CPC Class Codes: A61B 5/0013 Medical image data A61B1/00011, A61B6/56, A61B8/56 take precedence
• CPC Class Codes: A61B 5/0066 Optical coherence imaging
• CPC Class Codes: A61B 5/0084 for introduction into the body, e.g. by catheters A61B5/1459 takes precedence
• CPC Class Codes: A61B 5/02007 Evaluating blood vessel condition, e.g. elasticity, compliance
• CPC Class Codes: A61B 5/0215 by means inserted into the body catheters A61M25/00
• CPC Class Codes: A61B 5/026 Measuring blood flow A61B3/1233, A61B3/1241 take precedence
• CPC Class Codes: A61B 5/6853 with a balloon
• CPC Class Codes: A61B 5/6859 with multiple distal splines
• CPC Class Codes: A61B 8/12 in body cavities or body tracts, e.g. by using catheters catheters per se A61M25/00
• CPC Class Codes: A61B 8/445 Details of catheter construction
• CPC Class Codes: A61B 8/4461 Features of the scanning mechanism, e.g. for moving the transducer within the housing of the probe
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2002/016 made from wire-like elements
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61F 2230/0093 : Umbrella-shaped, e.g. mushroom-shaped
• CPC Class Codes: A61M 2025/0002 : with a pressure sensor at the distal end
• CPC Class Codes: A61M 2025/0003 : having an additional lumen transmitting fluid pressure to the outside for measurement
• CPC Class Codes: A61M 2025/0036 : with more than four lumina
• CPC Class Codes: A61M 2025/004 : characterized by lumina being arranged circumferentially
• CPC Class Codes: A61M 2205/3523 : using telemetric means
• CPC Class Codes: A61M 25/0029 : characterized by features relating to least one lumen located at the middle part of the catheter, e.g. slots, flaps, valves, cuffs, apertures, notches, grooves or rapid exchange ports catheter shaft surface irregularities A61M2025/006
• CPC Class Codes: A61M 25/01 : Introducing, guiding, advancing, emplacing or holding catheters A61M25/10 takes precedence

Abstract

A combined multi-lumen central access catheter and an embolic filter, further comprising an imaging modality to facilitate intravascular imaging of the filter.

Claims

1. A method of capturing thrombus within a blood vessel, comprising the steps of:

a. introducing a catheter having a filter member coupled thereto, wherein the filter member is circumferentially coupled about a distal end of the catheter and having a first end coupled circumferentially in fixed relation to the catheter and a second end circumferentially moveably coupled to the catheter, the filter member consisting of a plurality of struts configured to form a generally frustroconical proximal section of the filter member tapering proximally and having proximal interstitial openings, and a generally frustroconical distal section of the filter member tapering distally and having distal interstitial openings, the frustroconical proximal section having a length that is greater than or less than a length of the frustroconical distal section, each of the proximal interstitial openings having an open surface area either greater than or less than the open surface area of each of the distal interstitial openings;

the filter member being positioned generally intermediate the first opening and second opening and configured to be expanded in a patient'"'"'s blood vessel such that a transverse dimension of the filter decreases in the direction of the patient'"'"'s blood flow to collect thrombi;

b. deploying the catheter within a blood vessel such that the filter has an expanded diametric opening which opens facing a patient'"'"'s blood flow; and

c. imaging the filter member with an imaging system operable to detect a condition of the filter member.

2. The method according to claim 1, wherein the imaging system is an optical coherence tomography system.

3. The method according to claim 1, wherein the imaging probe is adapted to be translated at least one of proximally or distally relative to the filter member.

4. The method according to claim 1, wherein the imaging probe is adapted to be rotated relative to the filter member.

5. The method according to claim 1, wherein the step of introducing a catheter further comprises disposing the catheter in a lumen of a multi-lumen sheath, and introducing the multi-lumen sheath having the catheter disposed therein.

6. The method according to claim 5, wherein the imaging system is disposed within a lumen of the multi-lumen sheath.