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US 2017/0319232 A1Published application
Device and method for access to interior body regions
AssigneeAOK Innovations, LLC
InventorJon Kiev
Life of this patent
Estimating the term…
Abstract
A device and method is provided to gain access to interior body regions. The system includes a safety needle assembly, a stylet assembly, a blade assembly, an obturator assembly, and a dilator assembly. The safety needle assembly or stylet assembly accesses an interior body region, after which the blade assembly expands the pathway created by the safety needle assembly or stylet assembly. The obturator then further expands the pathway and delivers the dilator assembly to the desired location. The safety needle assembly, obturator assembly, and blade assembly are removed, leaving the dilator assembly in place for future procedures.
Claims15
A device to access interior body regions comprising:
- a piercing device operable to create a pathway through skin and into said interior body regions;
- a blade assembly operable to cut tissue to expand said pathway, said blade assembly further comprising at least one undercut disposed within an outer diameter of a blade assembly bottom, at least one blade connected to said at least one undercut, a first lumen extending through said blade assembly from said blade assembly bottom and through a blade assembly middle, said first lumen sized and configured to slidably receive said piercing device, a second lumen extending from said first lumen through a blade assembly top, and a first shelf disposed between said first lumen and said second lumen;
- a pushrod comprising a hollow, cylindrical pushrod top, said pushrod top connected to a hollow, cylindrical pushrod bottom, a tab stem extending from an outer diameter of said pushrod top, and a tab extending from said tab stem, wherein an outer diameter of said pushrod bottom is sized and configured to slidably and rotatably fit within said second lumen;
- an obturator assembly operable to further expand said pathway, said obturator assembly further comprising a cylindrical obturator bottom including a proximal lumen, a distal lumen, and a second shelf disposed between said proximal lumen and said distal lumen, a cylindrical obturator top including a stem sized and configured to fit within said proximal lumen, a slot extending through a wall of said obturator top, and an opening extending through the length of said obturator top, said opening sized and configured to fit around said blade assembly top;
- and
- a dilator assembly operable to maintain said pathway and provide access to said interior body regions, said dilator assembly further comprising a dilator slot and a dilator tab, said dilator slot sized and configured to receive said tab stem, wherein said dilator tab prevents rotation of said tab stem, and wherein said dilator assembly is releasably attached to said obturator assembly.
3 more elements
A method of accessing interior body regions, comprising:
- providing an access device defining:
- a piercing device, a pushrod in slidable and rotatable communication with a blade assembly, said pushrod and said blade assembly at least partially contained within an obturator assembly, and a dilator assembly, wherein said piercing device and said obturator assembly are releasably attached to said dilator assembly;
- advancing said piercing device through a skin layer and into said interior body regions;
- pushing a tab of said pushrod along a slot within said dilator assembly toward a distal end of said dilator assembly, wherein said pushing compresses a spring and urges said blade assembly toward a distal end of said obturator assembly, causing at least one blade of said blade assembly to deploy through a blade slot within a distal end of said obturator assembly;
- rotating said tab of said pushrod along said slot, wherein said rotating does not change the position of said at least one blade, and wherein said rotating moves said tab from a first side of said slot to a second side of said slot, said first side and said second side separated by a dilator tab;
- releasing said tab of said pushrod, wherein said releasing releases said spring, said spring urging said pushrod toward a proximal end of said dilator assembly;
- advancing said at least one blade by pushing said obturator assembly toward said skin layer, cutting said skin layer near an outer diameter of said stylet assembly to create a skin nick and increase the size of said pathway;
- and
- retracting said at least one blade by pushing said tab of said pushrod toward said distal end of said obturator assembly, rotating said tab of said pushrod from said second side of said slot to said first side of said slot, and releasing said tab of said pushrod.
6 more elements
Dependencies are inferred from the claim text.