Catheter including cutting element and energy emitting element

• US 9,801,647 B2
• Filed: 11/12/2012
• Issued: 10/31/2017
• Est. Priority Date: 05/26/2006
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Rosenthal, Michael
• Primary Examiner(s): McDermott, Corrine
• Assistant Examiner(s): Nguyen, Tin
• Application Number:
  US13/674,581
• Publication Number:
  US 20130123823A1
• Time in Patent Office: 1,814 Days
• Field of Search: 606170, 606159, 606167
• CPC Class Codes: A61B 17/32002 with continuously rotating, oscillating or reciprocating cutting instruments
• CPC Class Codes: A61B 17/320758 with a rotating cutting instrument, e.g. motor driven A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002
• CPC Class Codes: A61B 17/320783 through side-hole, e.g. sliding or rotating cutter inside catheter
• CPC Class Codes: A61B 2017/22039 eccentric
• CPC Class Codes: A61B 2017/22095 accessing a blood vessel true lumen from the sub-intimal space
• CPC Class Codes: A61B 2017/2905 flexible
• CPC Class Codes: A61B 2017/2927 the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/32004 having a laterally movable cutting member at its most distal end which remains within the contours of said end
• CPC Class Codes: A61B 2017/320069 for ablating tissue
• CPC Class Codes: A61B 2090/0811 for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument
• CPC Class Codes: A61B 2090/3784 both receiver and transmitter being in the instrument or receiver being also transmitter

Abstract

A catheter for removing tissue from a body lumen and for providing information relating to the body lumen. The catheter includes a tissue cutting element that rotates relative to the catheter body and is mounted to the drive shaft for imparting rotation to the tissue cutting element. An energy emitting element of the catheter rotates relative to the catheter body and is rotatable independently of the tissue cutting element.

Claims

1. A catheter for removing tissue from a body lumen and for providing information relating to the body lumen, the catheter comprising:

an elongate catheter body having a length and opposite proximal and distal end portions;

a first drive shaft positioned in the catheter body, the first drive shaft being rotatable relative to the catheter body;

a tissue cutting element adjacent the distal end portion of the catheter body and configured to rotate relative to the catheter body, the tissue cutting element being mounted to the first drive shaft to impart rotation to the tissue cutting element;

a second drive shaft positioned in the catheter body, the second drive shaft being rotatable relative to the catheter body; and

an energy emitting element adjacent the distal end portion of the catheter body and configured to rotate relative to the catheter body, the energy emitting element being mounted to the second drive shaft to impart rotation to the energy emitting element, the energy emitting element being rotatable independently of the tissue cutting element at the distal end portion, wherein the energy emitting element is positioned in the catheter body at a location that is proximal to the tissue cutting element to define a longitudinal distance between the energy emitting element and the tissue-cutting element,

wherein the energy emitting element is non-movable and fixed relative to the length of the catheter body to inhibit movement of the energy emitting element along the length of the catheter body,

wherein the longitudinal distance between the energy emitting element and the tissue cutting element is fixed and non-adjustable to inhibit adjustment of the longitudinal distance between the energy emitting element and the tissue cutting element,

wherein proximal ends of the respective first and second drive shafts are rotatably coupled together so that the proximal ends of the first and second drive shafts rotate together.

2. The catheter set forth in claim 1, wherein the catheter body includes a part adjacent to the energy emitting element that permits energy emitted from the energy emitting element to pass therethrough to the body lumen.

3. The catheter set forth in claim 2, wherein the energy emitting element is configured to receive emitted energy that is reflected back from the body lumen.

4. The catheter set forth in claim 2, wherein the first drive shaft defines a lumen, the energy emitting element being positioned in the lumen of the first drive shaft, wherein the first drive shaft includes a part adjacent to the energy emitting element that permits energy emitted from the energy emitting element to pass therethrough.

5. The catheter set forth in claim 1, wherein the catheter body defines a side opening extending generally transversely into the catheter body, wherein the tissue cutting element is movable relative to the side opening between a stored position, in which the tissue cutting element is received in the catheter body, and a cutting position, in which the tissue cutting element extends out of the side opening.

6. The catheter set forth in claim 5, wherein the tissue cutting element includes a circular cutting surface.

7. The catheter set forth in claim 1, further comprising at least one driver configured for operative connection to said first and second drive shafts for driving rotation of said first and second drive shafts.

8. The catheter set forth in claim 1, wherein the energy emitting element comprises an ultrasound element.

9. The catheter set forth in claim 8, wherein the ultrasound element is configured to receive emitted energy that is reflected back from the body lumen.

10. The catheter set forth in claim 1, further comprising hub coupling the proximal ends of the first and second drive shafts to one another.