Bone marrow aspiration needle
First Claim
Patent Images
1. 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.
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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.
175 Citations
37 Claims
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1. An aspiration device comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11, 12)
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10. A bone marrow aspiration device comprising:
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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.
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13. An aspiration device comprising:
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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. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A kit for administering an aspiration comprising:
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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. - View Dependent Claims (28, 29, 30, 31)
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32. A method for aspirating and sampling bone marrow tissue comprising:
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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. - View Dependent Claims (33, 34, 35, 36, 37)
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Specification