Assembly and method for stabilizing a percutaneous cable

• US 9,872,976 B2
• Filed: 08/19/2011
• Issued: 01/23/2018
• Est. Priority Date: 08/20/2010
• Status: Active Grant

• Current Assignee: Thoratec LLC
• Original Assignee: Thoratec LLC
• Inventors: Woo, Yi-Ren, Reichenbach, Steven H., Briana, Stephen, Walsh, Kelly, Bourque, Kevin
• Primary Examiner(s): Pellegrino, Brian
• Application Number:
  US13/213,571
• Publication Number:
  US 20120046515A1
• Time in Patent Office: 2,349 Days
• Field of Search: 606153, 623 136
• CPC Class Codes: A61M 2039/0223 having means for anchoring the subcutaneous access site
• CPC Class Codes: A61M 2039/0261 Means for anchoring port to the body, or ports having a special shape or being made of a specific material to allow easy implantation/integration in the body
• CPC Class Codes: A61M 39/0208 Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276
• CPC Class Codes: A61M 39/0247 Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body peritoneal dialysis catheters A61M1/285; tracheostomy devices A61M16/0465; measuring pressure within the body A61B5/03; colostomy devices A61F5/445; gastrotomy feeding tubes A61J15/0015; means for fixing a feeding tube outside of the body A61J15/0053
• CPC Class Codes: A61M 60/148 in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
• CPC Class Codes: A61M 60/178 drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
• CPC Class Codes: A61M 60/216 including a rotating member acting on the blood, e.g. impeller
• CPC Class Codes: A61M 60/585 User interfaces
• CPC Class Codes: A61M 60/88 Percutaneous cables

Abstract

A percutaneous cable is attached to a mechanical cardiac pump and is passed through the skin. Sutures can be used to stabilize the cable against movement to prevent disturbing tissue surrounding cable and thereby reduce the incidence of infection. A funnel-shaped tubular device can be used where the cable exits the skin to allow the cable to flex below or near the skin surface as may be desired to accommodate physical activity of a patient. An anchor can be attached to the cable and implanted below the skin surface to stabilize the cable against movement. The anchor can include any one or a combination of a flat mesh material, a bundle of ultrafine filaments, and a barbed filament.

Claims

1. An assembly comprising:

a percutaneous cable including a power line for powering a mechanical cardiac pump and a communication line for data communication with the mechanical cardiac pump;

an anchor attached to the percutaneous cable, the anchor comprising a mesh in a collapsed state, the mesh configured to engage biological tissue by tissue growth in the mesh, there being a slit formed through an outer edge of the mesh;

a split ring connecting the anchor to the percutaneous cable, the split ring configured to slide axially along the percutaneous cable and to clamp onto or be crimped onto a selected position on the percutaneous cable; and

a wrapper fixedly attached to and disposed around the anchor to keep the anchor in the collapsed state.

2. The assembly of claim 1, wherein the wrapper is removable, and the mesh is configured to be unfurled from the collapsed state to an extended state in which the mesh extends radially away from the percutaneous cable when the wrapper is removed.

3. The assembly of claim 2, wherein the anchor extends radially away from the split ring when in the extended state.

4. The assembly of claim 1, wherein the percutaneous cable comprises a receptacle configured to receive the split ring, the receptacle having a groove in which the split ring can be received to inhibit axial movement of the split ring relative to the percutaneous cable.

5. The assembly of claim 1, wherein the split ring comprises a plurality of teeth engaging and protruding radially inward toward the percutaneous cable.

6. The assembly of claim 1, further comprising a mechanical cardiac pump connected to the percutaneous cable.

7. The assembly of claim 1, wherein the percutaneous cable comprises an electrical connector configured to selectively engage and disengage from another electrical connector.

8. The assembly of claim 1, wherein a cut is formed through the split ring, and the cut forms opposite ends of the split ring which are spaced apart from each other by a distance that is smaller than an outer diameter of the percutaneous cable.

9. The assembly of claim 8, wherein the split ring is configured to bend in order to temporarily spread apart the opposite ends of the split ring.

10. The assembly of claim 1, wherein the split ring is configured to clamp onto the percutaneous cable.

11. The assembly of claim 10, wherein the split ring is configured to clamp onto the percutaneous cable due to elasticity of the split ring.

12. The assembly of claim 1, wherein the split ring is configured to be crimped onto the percutaneous cable to fix the split ring in place on the percutaneous cable.

13. The assembly of claim 1, wherein the slit extends from an inner edge of the mesh to the outer edge of the mesh.

14. The assembly of claim 1, wherein the slit forms a gap between portions of the mesh that are adjacent to the slit.

15. An assembly comprising:

a percutaneous cable including a power line for powering a mechanical cardiac pump and a communication line for data communication with the mechanical cardiac pump;

an anchor attached to the percutaneous cable, the anchor configured to slide axially along the percutaneous cable, the anchor comprising a mesh configured to engage biological tissue by tissue growth in the mesh; and

a wrapper fixedly attached to and disposed around the anchor to keep the anchor in a collapsed state until the wrapper is removed from the anchor,

wherein one or more slits are formed through an outer edge of the mesh, and the mesh is configured to be unfurled from the collapsed state to an extended state in which the mesh extends radially away from the percutaneous cable.

16. The assembly of claim 15, further comprising a mechanical cardiac pump connected to the percutaneous cable.

17. The assembly of claim 15, wherein each slit extends radially outward from an inner edge of the mesh to the outer edge of the mesh.

18. The assembly of claim 15, wherein each slit forms a gap between portions of the mesh that are adjacent to the slit.