VESSEL ENTRY DEVICE

• US 20080071342A1
• Filed: 10/05/2007
• Published: 03/20/2008
• Est. Priority Date: 04/15/2005
• Status: Active Grant

• Current Assignee: Cook Medical Technologies, LLC (Cook Group Incorporated)
• Original Assignee: Cook Vascular Incorporated (Cook Group Incorporated)
• Inventors: Lui, Chun, Goode, Louis, Booker, Robert
• Granted Patent: US 9,149,290 B2
• Time in Patent Office: Days
• US Class Current: 607/122
• CPC Class Codes: A61B 17/32002 with continuously rotating, oscillating or reciprocating cutting instruments
• CPC Class Codes: A61B 17/32053 Punch like cutting instruments, e.g. using a cylindrical or oval knife A61B17/326 takes precedence; trepans A61B17/1695; for use on the cornea A61F9/007
• CPC Class Codes: A61B 17/3468 for implanting or removing devices, e.g. prostheses, implants, seeds, wires devices for implanting seeds A61M37/0069
• CPC Class Codes: A61B 2017/00548 Gas cartridges therefor
• CPC Class Codes: A61N 1/056 Transvascular endocardial electrode systems
• CPC Class Codes: A61N 2001/0578 having means for removal or extraction

Abstract

An entry device for providing access to the interior of a body vessel through a wall of the vessel to enable removal of an implanted structure, such as a cardiac lead, from the body vessel includes an elongated sheath member and a tip positioned at the distal end of the sheath member. The elongated sheath member and tip have respective passageways extending therethrough that are sized and aligned to receive the implanted structure therein upon accessing the vessel. The elongated sheath member is capable of delivering sufficient torque to permit advancement of the tip through a wall of the vessel. The device may include an optional handle, and may be driven by manual or mechanical action.

Claims

1. An entry device for providing access to a body vessel for removing an elongated indwelling structure therefrom, the device comprising:

an elongated sheath and a tip positioned at a distal end of said sheath, said elongated sheath and tip having respective passageways extending therethrough, said passageways sized and aligned such that said indwelling structure is receivable therein, said elongated sheath having a proximal end and a distal end, and having a rigidity sufficient to permit advancement of said tip through a wall of said vessel by rotational and axial movement of said sheath proximal end, said tip having a distal end configured for entry through said vessel wall.

2. The entry device of claim 1, wherein said sheath comprises respective coaxial inner and outer sheath members.

3. The entry device of claim 1, wherein said sheath includes a reinforcing member disposed along a length of said sheath.

4. The entry device of claim 1, wherein said tip comprises a disruptor mechanism disposed along an outer surface of said tip.

5. The entry device of claim 4, wherein said disrupter mechanism comprises a plurality of helices extending along an outer surface of said tip.

6. The entry device of claim 1, further comprising a handle configured for engagement with a proximal end of said sheath.

7. The entry device of claim 6, wherein said handle includes an actuator and a drive mechanism responsive to said actuator, said drive mechanism operable for selectively translating input of said actuator into said at least one of rotation and axial movement of said sheath.

8. The entry device of claim 1, wherein said elongated sheath is formed of nylon or polyester, and has a bending stiffness of at least about eight pound-inch².

9. A method of providing entry to a body vessel for removing an elongated indwelling structure therefrom, the elongated indwelling structure having a distal end disposed within the body vessel and a proximal end extending through an opening in the vessel, and wherein the opening is sized and configured to inhibit removal of the distal end of the indwelling structure from the vessel, the method comprising:

providing a vessel entry device comprising an elongated sheath and a tip positioned at a distal end of the sheath, the elongated sheath and tip having respective passageways extending therethrough, the passageways sized and aligned such that the proximal end of the indwelling structure is receivable therein, the elongated sheath having a rigidity sufficient to permit advancement of said tip through a wall of said vessel by at least one of rotational and axial movement of said sheath proximal end, said tip having a distal end configured for entry through said vessel wall;

introducing the distal end of the tip through the extending proximal end of the indwelling structure, and advancing the vessel entry device to the vessel wall; and

passing at least the tip through the vessel opening.

10. The method of claim 9, wherein said vessel entry device further comprises a drive mechanism, the method farther including the step of actuating the drive mechanism to provide at least one of rotational and axial movement to said sheath.

11. The method of claim 9, further including the step of removing the indwelling structure from the body vessel through the tip and sheath.