Endocardial lead removing apparatus

• US 8,097,012 B2
• Filed: 07/27/2005
• Issued: 01/17/2012
• Est. Priority Date: 07/27/2005
• Status: Active Grant

• Current Assignee: Spectranetics Corporation (Koninklijke Philips N.V.)
• Original Assignee: Spectranetics Corporation (Koninklijke Philips N.V.)
• Inventors: Kagarise, Brian
• Primary Examiner(s): McDermott, Corrine M
• Assistant Examiner(s): RYCKMAN, MELISSA K
• Application Number:
  US11/190,550
• Publication Number:
  US 20110208207A1
• Time in Patent Office: 2,365 Days
• Field of Search: 606/167, 606/170, 606/171, 606/148, 606/144
• US Class Current: 606/170
• CPC Class Codes: A61B 17/00008 Vein tendon strippers tube strippers A61M1/83
• CPC Class Codes: A61B 17/32 Surgical cutting instruments A61B18/042 takes precedence; suture cutters A61B17/0467; instruments for ligaturing or cutting A61B17/128; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133
• 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 17/50 Instruments, other than pincettes or toothpicks, for removing foreign bodies from the human body locating otherwise A61B5/06; locating by radiation A61B6/00; removing calculi A61B17/22; from the eyes A61F9/00709
• CPC Class Codes: A61B 2017/00358 Snares for grasping

Abstract

The invention provides an apparatus having a tubular member for receiving an endocardial lead implanted within a patient'"'"'s body. Disposed generally at a distal end of the tubular member is at least one blade or cutting surface. An adjustment mechanism moves the blade between retracted and extended positions to engage the cutting surface with the endocardial lead to cut the lead. Once severed, the cut portion of the lead remains within an inner channel of the tubular member and the apparatus and cut portion of the lead are removed from within the patient. Various embodiments include the blade pivotally connected to the distal end of the tubular member and activated by a wire adjustment mechanism. Others include a metallic wire for slicing through the lead. Still others include a pneumatically actuated adjustment mechanism that inflates to move the blade and engage the cutting surface with the lead.

Claims

1. An endocardial lead removing apparatus for removing a lead implanted within a patient, said apparatus comprising:

an outer tubular member having a distal end and an outer lateral surface;

an inner tubular member received within said outer tubular member, the inner tubular member having a distal end and an outer lateral surface; and

wherein each of said inner and outer tubular members defines a channel in their respective outer lateral surfaces for receiving the lead, said channel having at least one cutting surface formed in their respective outer lateral surfaces, wherein outer tubular member includes a lateral protrusion at its distal end, wherein the protrusion of the outer tubular member is part of and aligned with the outer lateral surface and is curved with the same curvature of the outer tubular member, wherein the lateral protrusion laterally protrudes relative to the cutting surface, and wherein the inner tubular member includes a lateral protrusion at its distal end, wherein the protrusion of the inner tubular member is part of and aligned with the outer lateral surface and is curved with the same curvature of the inner tubular member, wherein the lateral protrusion laterally protrudes relative to the cutting surface;

wherein the inner tubular member and the outer tubular member are open distal of the lateral protrusions;

wherein said tubular members are independently rotatable relative to each other, wherein when the protrusions of the inner tubular member and the outer tubular member are adjacent each other, a closed window is formed proximal to the protrusions such that the lead may be captured within the inner tubular member and extend out the window, with the lead being entirely bounded by portions of the tubular members defining the closed window and being positioned between the cutting surfaces, such that rotation in opposite directions cuts the lead while the lead is captured.

2. The apparatus of claim 1, wherein said channels of said inner and outer tubular members are generally L-shaped having a longitudinal opening and a lateral opening generally orthogonal to the longitudinal opening.

3. The apparatus of claim 1, wherein said channels of said inner and outer tubular members are generally T-shaped having a longitudinal opening and two lateral openings generally orthogonal to the longitudinal opening.

4. The apparatus of claim 3, wherein said lateral openings are bounded by three edges.

5. The apparatus of claim 4, wherein at least one of said three edges is said cutting surface of said channel.

6. The apparatus of claim 1, wherein said inner and outer tubular members each include a handle at a proximal end.

7. The apparatus of claim 1, wherein said channels of said inner and outer tubular members are generally disposed at a distal end of each of said members.

8. The apparatus of claim 1, wherein said inner and outer tubular members are generally metallic.

9. An endocardial lead removing apparatus for removing a lead implanted within a patient, said apparatus comprising:

an outer tubular member having a longitudinal axis;

an inner tubular member received within said outer tubular member; and

wherein each of said inner and outer tubular members includes a channel for receiving the lead, said channel having a back surface orthogonal to the longitudinal axis, a cutting surface aligned with the longitudinal axis, wherein the outer tubular member includes a lateral protrusion at its distal end that is orthogonal to the longitudinal axis such that the lateral protrusion and the cutting surface form an L-shape, and wherein the inner tubular member includes a lateral protrusion at its distal end that is orthogonal to the longitudinal axis;

wherein the inner tubular member and the outer tubular member are open distal of the lateral protrusions;

wherein said tubular members are independently movable relative to each other, wherein when the protrusions of the inner tubular member and the outer tubular member are adjacent each other, a closed window is formed proximal to the protrusions such that the lead may be captured within the inner tubular member and extend out the window, with the lead being entirely bounded by portions of the tubular members defining the closed window and being positioned between the cutting surfaces such that movement of the tubular members cuts the lead while the lead is captured.

10. An endocardial lead removing apparatus for removing a lead implanted within a patient, said apparatus comprising:

an outer tubular member having a longitudinal axis and a distal end;

an inner tubular member received within said outer tubular member; and

wherein each of said inner and outer tubular members defines a channel for receiving the lead, said channel having a straight side aligned with the longitudinal axis, a back surface adjacent to and orthogonal to the straight side, and a cutting surface aligned with the longitudinal axis, wherein the straight side extends from the distal end to the back surface, wherein the outer tubular member includes a lateral protrusion at its distal end, wherein the lateral protrusion laterally protrudes relative to the cutting surface, and wherein the inner tubular member includes a lateral protrusion at its distal end;

wherein the inner tubular member and the outer tubular member are open distal of the lateral protrusions;

wherein said tubular members are independently movable relative to each other, wherein when the protrusions of the inner tubular member and the outer tubular member are adjacent each other, a closed window is formed proximal to the protrusions such that the lead may be captured within the inner tubular member and extend out the window, with the lead being entirely bounded by portions of the tubular members defining the closed window and being positioned between the cutting surfaces such that movement of the tubular members cuts the lead while the lead is captured.

11. An endocardial lead removing apparatus for removing a lead implanted within a patient, said apparatus comprising:

an outer tubular member having a longitudinal axis and a distal end;

an inner tubular member received within said outer tubular member; and

wherein each of said inner and outer tubular members define a channel for receiving the lead, said channel having a rear side, a back surface adjacent to the rear side, and a cutting surface adjacent to the back surface and opposite of the rear side, wherein the rear side extends from the distal end to the back surface, wherein the outer tubular member includes a lateral protrusion at its distal end, wherein the lateral protrusion has a lateral side that laterally protrudes relative to the cutting surface and a far side that extends from the lateral side to the distal end, and wherein the inner tubular member includes a lateral protrusion at its distal end wherein the lateral protrusion has a lateral side that laterally protrudes relative to the cutting surface;

wherein the inner tubular member and the outer tubular member are open distal of the lateral protrusions;

wherein said tubular members are independently movable relative to each other, wherein when the protrusions of the inner tubular member and the outer tubular member are adjacent each other, a closed window is formed proximal to the protrusions such that the lead may be captured within the inner tubular member and extend out the window, with the lead being entirely bounded by portions of the tubular members defining the closed window and being positioned between the cutting surfaces such that movement of the tubular members cuts the lead while the lead is captured.