Abstract: A bone cement mixing and delivery system including a mixer, a delivery device, and a flexible extension tube. A connector is attached to a distal end of the flexible tube. The connector includes a housing, a spindle configured with a fitting, and an enlarged knob. The spindle is seated within the housing and is configured to rotate between a closed and open position. In the open position, the spindle allows flow from the delivery device flexible extension tube into a bore of the spindle and into the spindle fitting. A delivery cement cannula is attached to the spindle fitting for allowing cement to travel from the delivery tube into living tissue. The enlarged knob is used to rotate the spindle from an open to a closed state and vice versa.

Abstract: A bone cement mixing and delivery system including a mixer and a delivery device. The mixer includes a paddle for mixing the components and a piston that pushes the mixed cement into the attached delivery device. The delivery device includes a tube into which the bone cement is forced from the mixer, and a plunger that forces the cement out of the tube during the medical procedure. The tube includes an entry port through which cement is introduced into the tube from the mixer. A one-way valve attached to the tube allows the cement to flow from the mixer through the entry port. After the cement is loaded in the tube, the delivery device is removed from the mixer. The valve blocks flow out of the entry port when the plunger is depressed.

Abstract: A bone cement mixing and delivery system including a mixer and a delivery device. The mixer includes a paddle for mixing the components and a piston that pushes the mixed cement into the attached delivery device. The delivery device includes a tube into which the bone cement is forced from the mixer, and a plunger that forces the cement out of the tube during the medical procedure. The tube includes an entry port through which cement is introduced into the tube from the mixer. A one-way valve attached to the tube allows the cement to flow from the mixer through the entry port. After the cement is loaded in the tube, the delivery device is removed from the mixer. The valve blocks flow out of the entry port when the plunger is depressed.

Abstract: A bone cement mixing and delivery system is provided in which separate components of bone cement are mixed together in a mixer to form a bone cement mixture. The mixer includes a paddle for mixing the components in a mixing chamber and a piston that pushes the mixing cement into an attached delivery device. The system further includes a switch that disconnects the drive assembly that actuates the paddle and piston from its power source. The switch is automatically tripped by a follower that moves upon actuation of the drive assembly. Once the cement is mixed and transferred to the delivery device, the follower trips the switch to automatically deactivate the drive assembly.

Abstract: A bone cement mixing and delivery system is provided in which separate components of bone cement are mixed together in a mixer to form a bone cement mixture. The mixer includes a paddle for mixing the components in a mixing chamber and a piston that pushes the mixing cement into an attached delivery device. The system further includes a switch that disconnects the drive assembly that actuates the paddle and piston from its power source. The switch is automatically tripped by a follower that moves upon actuation of the drive assembly. Once the cement is mixed and transferred to the delivery device, the follower trips the switch to automatically deactivate the drive assembly.

Abstract: A bone cement mixing and delivery system is provided in which separate components of bone cement are mixed together in a mixer to form a bone cement mixture. The mixer includes a mixing paddle and a mixing shaft connected to the mixing paddle. A motor operatively engages the mixing shaft to rotate the mixing shaft and the mixing paddle to mix the components in a mixing chamber. The motor also operatively engages a transfer mechanism. After a predetermined mixing period has elapsed, the motor automatically actuates the transfer mechanism to transfer the mixture to a delivery device. The mixture is then delivered to a target site, such as a vertebral body of a patient or other anatomical site.

Abstract: A bone cement mixing and delivery system is provided in which separate components of bone cement are mixed together in a mixer to form a bone cement mixture. The mixer includes a mixing paddle and a mixing shaft connected to the mixing paddle. A motor operatively engages the mixing shaft to rotate the mixing shaft and the mixing paddle to mix the components in a mixing chamber. The motor also operatively engages a transfer mechanism. After a predetermined mixing period has elapsed, the motor automatically actuates the transfer mechanism to transfer the mixture to a delivery device. The mixture is then delivered to a target site, such as a vertebral body of a patient or other anatomical site.

Abstract: The present invention provides a delivery system for use with a pressurizer to deliver a flowable material such as bone cement into an anatomical site under pressure. The delivery system includes a cartridge for holding the bone cement. A nozzle is mounted to the cartridge to convey the bone cement to the anatomical site. A spacer is movable along the nozzle between a plurality of adjustment positions to provide a variable clearance distance between the cartridge and the pressurizer to maintain a line-of-sight to the pressurizer and the anatomical site. The line-of-sight is particularly beneficial when using the delivery system in minimally invasive surgical procedures. A method of delivering the bone cement and an alternative pressurizer are also provided.

Abstract: A pressurizer is provided for use with a bone cement injection device to inject bone cement into a bone canal under pressure. The pressurizer includes a body having proximal and distal ends with an inlet defined at the proximal end, an outlet defined at the distal end, and a channel defined between the inlet and the outlet. The channel includes first and second segments. The first segment extends from the inlet about a first axis to the second segment. The second segment extends from the first segment to the outlet about a second axis intersecting the first axis at an acute angle. The channel defines a cement flow path that directionally varies between the first and second segments such that the bone cement injection device can be angled relative to the bone canal. Alternative embodiments in which the pressurizer includes a rigid support member and a handle are also provided.

Abstract: An access cannula (34) is supported by a cannula handle (22) and receives an introduction stylet (40) for insertion into a bone (44). An inner cannula (66) is inserted into the access cannula (34) and advanced into the bone (44) to cut and retrieve a specimen (74). The distal end (70) of the inner cannula (66) includes a swaged portion with a non-deformable sidewall (76) having a frustoconical interior surface (78) extending radially inwardly at a predetermined angle from the distal end (70) to a biopsy opening (80) having an annular cutting edge (84). The cutting edge (84) has opposed cusps (88) extending therefrom. A syringe (100) applies a vacuum to the inner cannula (66) for retaining the biopsy specimen in the inner cannula (66) and an obturator (102) removes the biopsy specimen from the inner cannula (66). The access cannula (34) remains in position and creates an open passage for access to the site (46) for performing other procedures.