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US 8,617,085 B2Granted
Bone tissue extracting device and method
OwnerAntonio Moran, Jr.inventor
Life of this patent
Estimating the term…
Abstract
A bone tissue extracting device operable with one hand comprises an ergonomic handle containing a forward and reverse cannula driver and a vacuum source. The device uses a disposable sterile single use cannula/trocar and disposable vacuum containers. The device and method for use improve the ability of a physician to locate accurately the target tissue in a patient, increase the probability that one or more suitable samples will be recovered from the patient at a single attempt, decrease attendant tissue trauma and patient discomfort, and decrease the chance of infection.
Claims18
A bone tissue extracting device, comprising:
- a driver portion comprising
- a handle;
- a motor;
- a user-operated motor actuator for controlling the motor;
- a driven gear;
- a drill portion;
- the drill portion adapted to fit into the driver portion, comprising a hollow, elongate cannula having a proximal end and a distal end, the cannula comprising
- a first means for piercing a frangible seal at the proximal end;
- a cannula gear engaged near the proximal end to co-rotate coaxially with the cannula, the cannula gear located on a distally facing surface of the proximal end,
- the cannula gear adapted to mesh with the driven gear;
- and an elongate trocar having an upper end and a lower end and shaped to fit slidably and coaxially into, and removably from, the cannula;
- the upper end of the trocar comprising a cap;
- the cap having a center and a periphery;
- the center being attached to the upper end of the trocar;
- the cap covering the first means for piercing a frangible seal at the proximal end of the cannula;
- the periphery being directly and removably connected to the cannula gear
- so that when the removable connection is actuated, the trocar can be removed from the cannula;
- the drill portion being rotatable by the motor through operation of the user-operated motor actuator, thereby allowing a user of the device to advance and withdraw the cannula into and out of the bone tissue of a patient.
15 more elements
A bone tissue extracting device, comprising:
- a handle;
- a motor;
- an elongate, hollow cannula adapted to be attachable to, and driven in axial rotation by, the motor;
- a cannula gear, adapted to be driven by the motor, engaged near the proximal end to co-rotate coaxially with the cannula, the cannula gear located on a distally facing surface of the proximal end;
- the cannula having a proximal end and a distal end, the cannula comprising an elongate trocar having an upper end and a lower end and shaped to fit slidably and coaxially into, and removably from, the cannula;
- the upper end of the trocar comprising a cap;
- the cap having a center and a periphery;
- the center being attached to the upper end of the trocar;
- the cap covering the proximal end of the cannula;
- the periphery being directly and removably connected to the cannula gear so that when the removable connection is actuated, the trocar can be removed from the cannula.
7 more elements
A drill part for a bone tissue extractor, comprising:
- a hollow, elongate cannula having a proximal end and a distal end, the cannula comprising
- a means for removably engaging a motor drive shaft engaged near the proximal end to co-rotate coaxially with the cannula and located on a distally facing surface of the proximal end;
- a means for piercing a frangible seal at the proximal end;
- an elongate trocar having an upper end and a lower end and shaped to fit slidably and coaxially into, and removably from, the cannula;
- the upper end of the trocar comprising a cap;
- the cap having a center and a periphery;
- the center being attached to the upper end of the trocar;
- the cap covering the means for piercing a frangible seal at the proximal end of the cannula;
- the periphery comprising means for directly and removably connecting the periphery to the means for removably engaging a motor drive shaft so that when the removable connection is actuated, the trocar can be removed from the cannula.
6 more elements
Dependencies are inferred from the claim text.