SYSTEMS AND METHODS FOR REMOVING OBSTRUCTIVE MATTER FROM BODY LUMENS AND TREATING VASCULAR DEFECTS

• US 20100114017A1
• Filed: 12/23/2008
• Published: 05/06/2010
• Est. Priority Date: 07/23/2002
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Reverse Medical Corporation (Medtronic Plc)
• Inventors: Von Hoffmann, Gerard, Lenker, Jay A., Strauss, Brian Michael
• Granted Patent: US 8,425,549 B2
• Time in Patent Office: Days
• US Class Current: 604/96.10
• CPC Class Codes: A61B 17/12118 for positioning in conjunction with a stent
• CPC Class Codes: A61B 17/1214 Coils or wires
• CPC Class Codes: A61B 17/12186 liquid materials adapted to be injected
• 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 17/221 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 17/3439 with means for changing the inner diameter of the cannula, e.g. expandable A61B17/3423, A61B17/3431 take precedence; catheters A61M25/0662
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61B 2017/12054 Details concerning the detachment of the occluding device from the introduction device
• CPC Class Codes: A61B 2017/22001 Angioplasty, e.g. PCTA
• CPC Class Codes: A61B 2017/22041 outside the catheter
• CPC Class Codes: A61B 2017/22042 Details of the tip of the guide wire
• 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 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 5/6858 with a distal basket, e.g. expandable basket
• CPC Class Codes: A61M 2025/0024 Expandable catheters or sheaths
• CPC Class Codes: A61M 25/0021 characterised by the form of the tubing A61M25/0054 takes precedence
• CPC Class Codes: A61M 25/0023 by the form of the lumen, e.g. cross-section, variable diameter
• CPC Class Codes: A61M 25/0026 : Multi-lumen catheters with stationary elements catheter assemblies comprising a catheter in combination with a guide tube, sheath or sleeve A61M2025/0681; catheters comprising telescoping coaxial elements A61M2025/0175
• CPC Class Codes: A61M 25/0043 : characterised by structural features
• CPC Class Codes: A61M 25/0074 : Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable
• CPC Class Codes: A61M 27/002 : Implant devices for drainage of body fluids from one part of the body to another intraocular A61F9/00781; middle ear A61F11/202

Abstract

Systems and methods for removing obstructions from, delivering implantable devices or substances in or near and/or restoring flow through body lumens, such as blood vessel lumens. A catheter having a proximal portion of a first diameter and a distal portion of a second diameter (smaller than the first diameter) is advanced into a body lumen. The distal portion of the catheter is caused to expand to a diameter that is larger than the second diameter but no larger than the first diameter. A working device is then advanced out of the distal end of the catheter and used to remove obstructive matter, deliver an implantable device or substance and/or restore flow. The distal portion can be reduced in diameter prior to removal from the body.

Claims

1. A system useable for performing a therapeutic or diagnostic task at a location within the body of a human or animal subject, said system comprising:

a catheter that has a proximal portion, a distal portion, a lumen and a distal end opening, said catheter being transitionable from a first configuration wherein the distal portion has a first outer diameter that is smaller than the outer diameter of the proximal portion and a second configuration wherein the distal portion is expanded to a second outer diameter that is larger than the first outer diameter and no larger than the outer diameter of the proximal portion; and

a working device that is advanceable though the lumen of the catheter and out of its distal opening at least when the distal portion of the catheter is in is second configuration, said working device being useable to perform the therapeutic or diagnostic task.

2. A system according to claim 1 wherein the working device comprises a device useable to remove obstructive matter from a body lumen.

3. A system according to claim 2 wherein the working device comprises a device useable to remove obstructive matter from a blood vessel.

4. A system according to claim 2 wherein the working device comprises an embolectomy device.

5. A system according to claim 2 wherein the working device comprises an expandable element that entrains or engages obstructive matter and is thereafter useable to move the engaged or entrained obstructive matter through the distal end opening and into the lumen of the catheter.

6. A system according to claim 1 wherein the working device comprises a flow restoration device useable to facilitate fluid flow through or around obstructive matter located in a body lumen.

7. A system according to claim 6 wherein the flow restoration device comprises a device that canalizes or compresses obstructive matter in a manner that facilitates fluid flow through or around the obstructive matter.

8. A system according to claim 1 wherein the working device comprises a device that is initially useable to facilitate fluid flow through or around obstructive matter located in a body lumen and thereafter further useable to remove at least some of the obstructive matter from the body lumen.

9. A system according to claim 1 wherein the working device comprises a device usable to deliver and implant.

10. A system according to claim 9 wherein the working device is useable to deliver an occlusion coil.

11. A system according to claim 9 wherein the working device is useable to deliver an embolic device.

12. A system according to claim 9 wherein the working device comprises an expandable element positionable adjacent to a vascular defect and a delivery element useable to deliver a space occupying device or substance into the vascular defect.

13. A system according to claim 12 wherein the expandable element is constructed to substantially confine delivery of the space occupying device or substance to an area within the vascular defect.

14. A system according to claim 12 wherein the expandable element is positionable in a blood vessel lumen adjacent to an aneurysm and the delivery element is useable to deliver a space occupying device or substance into the aneurysm.

15. A system according to claim 12 wherein the expandable element is positionable in a blood vessel lumen adjacent to an arterio-venous malformation and the delivery element is useable to deliver a space occupying device or substance into the arterio-venous malformation.

16-58. -58. (canceled)