Bone marrow aspiration needle
AssigneeAllegiance Corporation
InventorsJohn A. Krueger, Greg Groenke, Grant A. Clark, Edward Sherman
Life of this patent
Estimating the term…
Abstract
The present invention provides an aspiration device that includes an outer cannula 16, a stylet 14, and an aspiration needle 80. The aspiration needle includes hollow cannula 82 and an aperture 93. The outer cannula 16 defines a distal tip 29 that is tapered to provide a distal cutting edge. The stylet 14 is designed to be inserted in the outer cannula 16. The stylet 14 also defines a sharp distal tip 30. The hollow cannula 82 designed to be inserted in the outer cannula 16. A distal end 91 of the hollow cannula 82 is closed and an aperture 93 is defined in a side of the hollow cannula 82.
Claims37
An aspiration device comprising:
- an outer cannula secured in a handle, the outer cannula defining a distal tip that provides a distal cutting edge;
- a stylet designed to be inserted in the outer cannula, the stylet defining a sharp distal tip;
- a hollow cannula designed to be inserted in the outer cannula;
- and
- an aperture defined in a side of the hollow cannula.
A bone marrow aspiration device comprising:
- a housing;
- a hollow cannula secured in the housing and designed to be inserted in an outer cannula;
- the distal end of the hollow cannula being closed;
- and
- an aperture defined in a side of the hollow cannula.
An aspiration device comprising:
- an outer cannula secured in a handle;
- a stylet designed to be inserted in the outer cannula;
- and
- a hollow cannula designed to be inserted in the outer cannula, the hollow cannula adapted to define an aspiration zone generally to the side of the hollow cannula.
A kit for administering an aspiration comprising:
- an outer cannula secured in a handle, the outer cannula defining a distal tip that provides a distal cutting edge;
- a stylet designed to be inserted in the outer cannula, the stylet defining a sharp distal tip;
- a hollow cannula designed to be inserted in the outer cannula;
- and
- an aperture defined in a side of the hollow cannula.
A method for aspirating and sampling bone marrow tissue comprising:
- inserting a stylet into an outer cannula;
- penetrating the bone cortex with the stylet and the outer cannula to enter the medular cavity;
- removing the stylet;
- inserting an aspiration needle into the outer cannula;
- creating suction through the aspiration needle;
- removing the aspiration needle;
- further inserting the outer cannula into the medular cavity, thereby trapping bone marrow tissue within the outer cannula;
- and
- removing the bone marrow tissue from the patient.
Dependencies are inferred from the claim text.