Temporary arterial shunt and method

• US 6,966,887 B1
• Filed: 02/27/2002
• Issued: 11/22/2005
• Est. Priority Date: 02/27/2002
• Status: Expired due to Fees

• Current Assignee: Maquet Cardiovascular LLC (Getinge AB)
• Original Assignee: Origin Medsystems Inc. (Boston Scientific Corporation)
• Inventors: Chin, Albert K.
• Primary Examiner(s): Bianco, Patricia
• Application Number:
  US10/087,089
• Time in Patent Office: 1,364 Days
• Field of Search: 604 8- 10, 604/523, 604/264, 604/532, 604/524, 604/525, 606/108, 606/153, 606191- 93, 606/198, 606/156, 606/194, 606/197, 606/199, 606/213, 606/215, 623/1.1, 623/1.11, 623/1.44, 623/1.23, 138/118, 138/128
• US Class Current: 604/8
• CPC Class Codes: A61B 17/11 for performing anastomosis; Buttons for anastomosis
• CPC Class Codes: A61B 17/12045 double occlusion, e.g. during anastomosis
• CPC Class Codes: A61B 2017/12127 Double occlusion, e.g. for creating blood-free anastomosis site
• CPC Class Codes: A61F 2/064 with special features to facilitate anastomotic coupling anastomosis of natural blood vessels A61B17/11

Abstract

Surgical construction or bypass grafting of a target vessel includes method and instrumentation and apparatus for forming and inserting a fluid-impervious tubular conduit including a central protrusion through an aperture in the vessel to form a fluid-conducting shunt past the aperture. An anastomosis over the aperture is partially completed with the protrusion of the tubular conduit extending through the partial anastomosis. A removal tube is disposed over the protrusion for applying tensile force thereto relative to the tubular conduit for dissembling the tubular conduit along a continuous path for removal as a single strand from the vessel through the tube and aperture and the partial anastomosis prior to completion of the procedure.

Claims

1. A temporary sealing element for forming a fluid-tight conduit within a fluid conduit within a patient'"'"'s body, the temporary sealing element comprising:

a tubular conduit having spaced ends and a protrusion formed intermediate the spaced ends, the tubular conduit including a region of diminished shear strength extending along a continuous path on the tubular conduit from the protrusion to each of the spaced ends thereof for selectively disassembling the tubular conduit along the continuous path in response to tension applied to the protrusion to disassemble the tubular conduit into at least one continuous strand along the path from the protrusion to an end spaced therefrom.

2. The temporary sealing element according to claim 1 including a strand of material forming the protrusion and a plurality of contiguous convolutes disposed along the tubular conduit between the spaced ends thereof, with successive convolutes extending remotely from the protrusion to the spaced ends, and with each convolute adhering to adjacent convolutes in regions therebetween of said diminished shear strength extending along the continuous path on the tubular conduit.

3. The temporary sealing element according to claim 2 in which the strand of material that forms the protrusion and tubular conduit includes bioinert thermoplastic material and includes thermoplastic adhesion between contiguous edges of adjacent convolutes of the strand disposed in a helical pattern forming the tubular conduit.

4. The temporary sealing element according to claim 3 in which said bioinert thermoplastic material is polyvinyl chloride.

5. The temporary sealing element according to claim 2 including a removal tube overlaying the protrusion and selectively positionable against the tubular conduit to facilitate exertion of tensile force on the protrusion relative to the removal tube in position against the tubular conduit for disassembling the tubular conduit along the continuous path.

6. The temporary sealing element according to claim 1 in which

the tubular conduit is formed of flexible resilient material and includes a generally cylindrical cross section between the spaced ends, and the protrusion is integrally formed therewith.

7. The temporary sealing element according to claim 6 in which

the region of diminished shear strength extends from the protrusion along a meandering path to the spaced ends of the tubular conduit.

8. The temporary sealing element according to claim 6 in which the region of diminished shear strength extends from the protrusion along a substantially helical path to the spaced ends of the tubular conduit.