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US 2012/0071907 A1Published application
Plaque removal device with rotatable cutting element
AssigneeTyco Healthcare Group LP
InventorsRafael Pintor, Bradley Steven Culbert, Harold Alexander Heitzmann, Bruce D. Stambaugh
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Abstract
An elongate tubular body with a rotatable cutting element is provided. An opening is provided near the distal end of the tubular body, and the cutting element may be partially exposed through the opening. The cutting element is configured to remove plaque from the wall of a body lumen. A distal segment may be coupled to the distal end of the tubular body and may have a distal port for slidably receiving a guidewire therethrough.
Claims23
An intravascular medical device comprising:
- an elongate tubular body having a proximal end, a distal end, and an outer diameter;
- a housing coupled to the distal end of the elongate tubular body, the housing having distal and proximal sections, each section having distal and proximal ends, the proximal end of the proximal section connected to the tubular body, the proximal end of the distal section connected to the distal end of the proximal section, an inner surface of the distal section of the housing defining an interior space, the distal section of the housing including a distal segment shaped to extend radially inwardly with respect to a longitudinal axis of the housing to define an opening at the distal end of the distal section of the housing;
- a rotatable cutting element positioned within the interior space of the housing, the rotatable cutting element having distal and proximal ends and a lumen extending between the proximal and distal ends, the cutting element having a first outer dimension smaller than an inner dimension of the housing and larger than a dimension of the opening at the distal end of the distal section of the housing and larger than a dimension of an opening in the distal end of the proximal section of the housing;
- a flexible drive shaft connected to the rotatable cutting element extending through the elongate tubular body, the flexible drive shaft having a lumen aligned with the lumen of the cutting element, the lumens being sized and configured to accept a guidewire;
- and
- a control at the proximal end of the elongate tubular body and comprising a drive motor configured to transmit rotation to the flexible drive shaft.
3 more elements
An intravascular medical device comprising:
- an elongate tubular body having a proximal end, a distal end, and an outer diameter;
- a housing coupled to the distal end of the elongate tubular body, the housing having a proximal end and a distal end and an opening at the distal end;
- a rotatable cutting element including a cylindrical body and at least one cutting blade, the cylindrical body having distal and proximal ends a lumen extending between the distal and proximal ends, the cylindrical body further having an outer surface having a substantially constant diameter between the distal and proximal ends, the at least one cutting blade extending outwardly from the outer surface in a helical pattern for about one-half to one revolution about the cylindrical body of the cutting element, the rotatable cutting element being configured to axially displace relative to a longitudinal axis of the housing along a limited range of motion between a first position, in which the cylindrical body is recessed within the housing, and a second position, in which the cylindrical body at least partially protrudes through the opening in the distal end of the housing, wherein at least a portion of the cutting blade is exposed beyond the housing in the second position;
- a flexible drive shaft connected to the rotatable cutting element extending through the elongate tubular body, the drive shaft having a lumen aligned with the lumen of the cylindrical body of the cutting element, the lumens being sized and configured to accept a guidewire;
- and
- a control at the proximal end of the elongate tubular body and comprising a drive motor configured to transmit rotation to the flexible drive shaft.
3 more elements
Dependencies are inferred from the claim text.