Surgery – Miscellaneous – Methods
Patent
1994-03-18
1995-10-10
Cohen, Lee S.
Surgery
Miscellaneous
Methods
606 65, A61B 1758, A61F 504
Patent
active
054562678
ABSTRACT:
The invention relates to systems and methods for harvesting bone marrow and biopsy sections of bone. A hollow screw is attached to the bone and then a negative pressure is applied to the screw to withdraw the bone marrow through the hollow portion of the screw. One system and method includes inserting a pin into the bone and then positioning the screw on the pin. A guide cannula may be used to insert the pin. The screw is inserted into the bone and then the pin withdrawn, leaving the screw in the bone to withdraw the bone marrow. Another system and method includes using a screw with a head end and an opposing threaded end, with the threaded end being provided with cutting flutes or partial or full missing threads, or both, and then withdrawing the bone marrow from voids created by the flutes or the missing threads. Another system and method includes rotating a self-drilling and self-tapping screw into the bone without the use of a pin, and then withdrawing the bone marrow through side ports in the screw from a void created by partial or full missing threads on the screw. Another system and method is provided for bone biopsy procedures wherein a screw is positioned in the bone and a cannula is subsequently provided to create a bone core between the screw and the cannula which can be analyzed.
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Photographs of a Jamshidi device, Exhibit A.
Photographs of a Monoject.RTM. device, Exhibit B.
Copy of a Monoject.RTM. device packaging, one page dated 1991, Exhibit C.
Cohen Lee S.
Huang Stephen
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