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US 11,432,873 B2Granted
Methods and devices for access across adjacent tissue layers
AssigneeBoston Scientific Scimed, Inc.
InventorsPeter Brown, Sith Khoune, Keke Lepulu, Ryan Donovan, Kenneth F. Binmoeller
Life of this patent
Estimating the term…
Abstract
Adjacent tissue layers can be accessed using a catheter device with a distal tip having a conductive portion including a first cutting feature and one or more projections extending from the first cutting feature towards an outer diameter of the distal tip. Electrical energy can be supplied to the conductive portion of the device to cut tissue. A stent can be delivered to form a fluid communication between the adjacent tissue layers.
Claims19
A catheter assembly, comprising:
- an outer sheath having a lumen extending therethrough along a longitudinal axis of the assembly;
- an inner body having a proximal end, a distal end, and a passage extending therethrough along the longitudinal axis, a portion of the inner body receivable within the lumen of the outer sheath;
- a tip positioned proximate the distal end of the inner body, the tip being conically shaped and having a conductive portion including a distal ring-shaped cutting feature disposed on a distal-most face of the tip and a proximal cutting feature extending proximally from the distal ring-shaped feature to a maximum radial position, the maximum radial position defining a vertical length between the maximum radial position and the longitudinal axis, wherein the length is less than 50% of a maximum outer diameter of the outer sheath;
- and
- a stent constrained on the inner body.
2 more elements
A catheter assembly, comprising:
- an outer sheath having a lumen extending therethrough;
- an inner body having a proximal end, a distal end, and a passage extending therethrough, a portion of the inner body receivable within the lumen of the outer sheath;
- a tip positioned near the distal end of the inner body, the tip being conically shaped and having an insulating portion and a conductive portion, the conductive portion comprising a distal cutting portion disposed on a distal-most face of the tip and a proximal cutting portion extending radially outwardly and proximally from the distal cutting portion on the distal-most face to a maximum diameter conductive position of the catheter assembly, a position along the insulating portion, the outer sheath, or both extending radially outward further than the maximum diameter conductive position of the conductive portion, the conductive portion configured to be electrically coupled to an electrosurgical generator, the maximum diameter conductive position less than or equal to one half of a diameter of the outer sheath;
- and a stent constrained on the inner body.
1 more element
A catheter assembly, comprising:
- an outer sheath having a lumen extending therethrough along a longitudinal axis of the assembly;
- an inner body having a proximal end, a distal end, and a passage extending therethrough along the longitudinal axis, a portion of the inner body receivable within the lumen of the outer sheath;
- and
- a tip positioned near the distal end of the inner body, the tip being conically shaped and having a conductive portion, the conductive portion including a plane transverse to the longitudinal axis at the distal end of the inner body that defines a ring-shaped cutting feature on a distal-most face of the tip, the conductive portion further defines a proximal cutting portion extending from the ring-shaped cutting feature proximally and radially outward from the longitudinal axis to a maximum radial position, the maximum radial position defining a vertical length between the maximum radial position and the longitudinal axis that is less than 50% of a maximum outer diameter of the outer sheath, the conductive portion configured to be electrically coupled to an electrosurgical generator;
- and
- a stent constrained on the inner body.
3 more elements
Dependencies are inferred from the claim text.