# US 9,039,728 B2 · IVC filter catheter with imaging modality

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,039,728 B2
- Document ID: US9039728B2
- Status: Granted
- Kind: B2
- Application number: 13/735,810
- Filed: 2013-01-07
- Published: 2013-07-25
- Granted: 2015-05-26
- Earliest claimed: 2007-08-31
- Assignees: BiO2 Medical, Inc.
- Applicants: BiO2 Medical, Inc.
- Inventors: Luis F. Angel; Jeffrey N. Steinmetz; Daniel D. Sims
- Web page: https://patentgrep.com/patent/US9039728B2

## CPC

- A61F 2/011: {Instruments for their placement or removal}
- A61B 1/00133: {Drive units for endoscopic tools inserted through or with the endoscope}
- A61B 1/0125: {Endoscope within endoscope}
- A61B 5/0066: {Optical coherence imaging}
- A61B 5/0084: {for introduction into the body, e.g. by catheters (A61B5/1459 takes precedence)}
- A61B 5/02007: {Evaluating blood vessel condition, e.g. elasticity, compliance}
- A61B 5/6859: {with multiple distal splines}
- A61B 8/12: in body cavities or body tracts, e.g. by using catheters
- A61B 8/4461: {Features of the scanning mechanism, e.g. for moving the transducer within the housing of the probe}
- A61B 17/00234: {for minimally invasive surgery (A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence)}
- A61M 25/01: Introducing, guiding, advancing, emplacing or holding catheters (A61M25/10 takes precedence)
- A61B 5/0013: {Medical image data (A61B1/00011, A61B6/56, A61B8/56 take precedence)}
- A61B 5/0215: by means inserted into the body
- A61B 5/026: Measuring blood flow {(A61B3/1233, A61B3/1241 take precedence)}
- A61B 5/6853: {with a balloon}
- A61B 8/445: {Details of catheter construction}
- A61B 2017/00296: {mounted on an endoscope}
- A61B 2090/3966: {Radiopaque markers visible in an X-ray image}
- A61F 2002/016: {made from wire-like elements}
- A61F 2002/018: {made from tubes or sheets of material, e.g. by etching or laser-cutting}
- A61F 2230/008: paraboloidal
- A61F 2230/0093: Umbrella-shaped, e.g. mushroom-shaped
- 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)}
- A61M 2025/0002: {with a pressure sensor at the distal end}
- A61M 2025/0003: {having an additional lumen transmitting fluid pressure to the outside for measurement}
- A61M 2025/0036: {with more than four lumina}
- A61M 2025/004: {characterized by lumina being arranged circumferentially}
- A61M 2205/3523: using telemetric means
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}

## 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

### Claim 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.

### Claim 2 (depends on 1)

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

### Claim 3 (depends on 1)

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.

### Claim 4 (depends on 1)

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

### Claim 5 (depends on 1)

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.

### Claim 6 (depends on 5)

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