Patent ID: 11918193
Assignee: CERVOS MEDICAL LLC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A bone marrow aspiration device comprising:
a cannula having a proximal end and a distal end and defining a lumen between the distal and proximal ends, the distal end of the cannula being closed and configured to penetrate a bone of a patient, the cannula defining at least one side aperture spaced proximally from the closed distal end;
a handle at the proximal end of the cannula; and
a screw mechanism distal to the handle, the mechanism comprising a threaded jacket and a lead screw receivable in the threaded jacket, the threaded jacket including a non-threaded portion to receive the lead screw and a threaded portion adjacent the non-threaded portion to engage the lead screw, the threaded jacket tapering at its distal end, the cannula extending through a central lumen defined by the lead screw, an exposed length of the cannula that extends from the distal end of the threaded jacket being adjustable by advancing the lead screw into the threaded jacket or reversing the lead screw out of the threaded jacket, the length of the lead screw enabling the mechanism to reposition the cannula to different depths within the bone with rotation of the handle.