Abstract: A surgical cutting tool includes an elongated shaft and a cutting head. The shaft defines a coupling portion terminating at a proximal end of the shaft, a stem portion, and a distal portion. The stem portion defines a central axis. The coupling portion optionally defines a deflection surface positioned oblique with respect to the central axis and connected with a first driven surface and a second driven surface. Upon insertion into a drive chuck, the deflection surface promotes self-alignment of the cutting tool and the drive chuck.

Abstract: A device for use with a debridement system is disclosed. The device includes an outer tubular shaft having an inner surface defining a lumen along an axis, the inner surface having an inner surface diameter. An inner tubular shaft is disposed within the lumen and rotatable within the outer tubular shaft. The inner tubular shaft includes an outer surface having an outer surface diameter less than the inner surface diameter. The inner surface of the outer tubular shaft with the outer surface of the inner tubular shaft forms a channel along the axis to receive fluid from the fluid source. The rotor is disposed in the channel and includes an axially extending helicoid blade coupled to the inner tubular shaft. The blade rotates within and with respect to the outer tubular shaft and exerts an axial thrust on the fluid in the channel with respect to the outer tubular shaft.

Abstract: Disclosed is a system to engage one or more tools. In the system a drive shaft and collet may be assembled to engage and disengage, selectively, a plurality of tools. Further, a tracking device may be used to track a location of at least a portion of the tool.

Abstract: A system including a flow control assembly. The system may include a flow regulating shunt system, for various purposes such as a use as a hydrocephalus shunt. The flow control assembly may be controlled according to selected parameters and methods. These include controlling microelectromechanical (MEMS) system to control a pressure in the flow control assembly.

Abstract: An irrigation system for a surgical instrument includes an irrigation tube arranged to convey an irrigation fluid and an irrigation clip structurally arranged to receive a portion of the irrigation tube. The irrigation clip includes a proximal portion, a distal portion, a body portion, and an arm portion. The arm portion is structurally configured to selectively attach the irrigation clip to the surgical instrument and to bias the irrigation clip toward the surgical instrument with a biasing force. The irrigation clip includes a tube locking portion structurally arranged to cooperate with the surgical instrument to engage the outer surface portion of the irrigation tube to inhibit rotation and axial displacement of the irrigation tube relative to the irrigation clip in response to the biasing force.

Abstract: Disclosed is a system to engage a plurality of tools. In the system a drive shaft and collet may be assembled to engage and disengage, selectively, a plurality of tools. User selection may allow use of a plurality of tools during a procedure or during a plurality of procedures.

Abstract: The invention includes a shunt for at least partial implantation into a patient that includes an elongated conduit having at least one lumen therethrough, that includes a proximal end for receipt of bodily fluids for flow through the shunt and a distal end for discharge of the bodily fluids from the shunt, and a long term source of at least one occlusion resistant agent, wherein said at least a portion of the at least one occlusion resistant agent can permeate through at least a portion of the elongated conduit. The invention also includes kits and systems.

Abstract: A device for use with a debridement system is disclosed. The device includes an outer tubular shaft having an inner surface defining a lumen along an axis, the inner surface having an inner surface diameter. An inner tubular shaft is disposed within the lumen and rotatable within the outer tubular shaft. The inner tubular shaft includes an outer surface having an outer surface diameter less than the inner surface diameter. The inner surface of the outer tubular shaft with the outer surface of the inner tubular shaft forms a channel along the axis to receive fluid from the fluid source. The rotor is disposed in the channel and includes an axially extending helicoid blade coupled to the inner tubular shaft. The blade rotates within and with respect to the outer tubular shaft and exerts an axial thrust on the fluid in the channel with respect to the outer tubular shaft.

Abstract: Disclosed is a system to engage one or more tools. In the system, a drive shaft and collet may be assembled to engage and disengage, selectively, a plurality of tools. A guide may be used with the system to select various features of a procedure, such as depth and position.

Abstract: A surgical dissection tool for cutting bone and other tissue includes a cutting head having an outer surface having non-paired or an odd number of flutes formed therein. Each flute includes a rake surface intersecting with the outer surface to form a cutting edge, and a relief surface opposite the rake surface. The relief surface and the rake surface form a first angle. Each flute also includes a leading angled surface extending from the relief surface to a distal end portion of the cutting head, the leading angled surface and the rake surface forming a second angle substantially the same as the first angle.

Abstract: A surgical bur is disclosed having cutting and trailing edges and associated flutes and lands. Each flute includes a cutting edge. Each of the trailing edges relatives in a selected dimension to a preceding cutting edge.

Abstract: A surgical bur including flutes and lands. Each of the flutes includes a cutting edge, rake surfaces and a clearance surface. The rake surfaces of one of the flutes are decoupled from each other. Each of the lands is disposed between a pair of the flutes.

Abstract: A surgical bur includes a body and a drill point. The body includes flutes and lands. Each of the flutes includes a cutting edge, a rake face, and a clearance surface. Each of the lands is convex-shaped and disposed between a pair of the flutes. The drill point includes axial relief surfaces. Each of the axial relief surfaces has a planar area, is distinct from the lands and borders (i) a distal portion of one of the cutting edges, (ii) one of the lands, and (iii) one of the clearance surfaces.

Abstract: A surgical cutting tool adapted to be rotatably driven by a motor. The surgical cutting tool includes an elongated shaft defining intermediate and coupling portions. A shape of the intermediate portion defines a primary central axis of the shaft. The coupling portion includes a tang having a tapered cylindrical shape that defines a drive axis. The drive axis is slanted with respect to the primary central axis. When coupled to the motor of a powered handpiece, the tang transmits an input or drive force from the motor to the intermediate portion as a torque about the primary central axis. In some embodiments, the drive axis extends through a centroid of first and second spaced apart cross-sectional planes of the tang, the first and second planes each being perpendicular to the primary central axis.

Abstract: Disclosed is a system to engage a plurality of tools. In the system a drive shaft and collet may be assembled to engage and disengage, selectively, a plurality of tools. User selection may allow use of a plurality of tools during a procedure or during a plurality of procedures.

Abstract: The pneumatic drill has member defining an air input and an air output and a housing defining an internal cylindrical chamber having bearing surfaces having a through axis. A driven shaft is coupled to the tool engaging chuck that defines a plurality of longitudinal slots. The driven shaft is disposed within the chamber and has a longitudinal axis offset from the through axis. A plurality of vanes each being partially formed of graphite that are individually disposed within one of the plurality's of longitudinal slots. Two of the vanes, the housing, and the driven shaft define a moving compression chamber.

Abstract: A surgical cutting tool includes an elongated shaft and a cutting head. The shaft defines a coupling portion terminating at a proximal end of the shaft, a stem portion, and a distal portion. The stem portion defines a central axis. The coupling portion optionally defines a deflection surface positioned oblique with respect to the central axis and connected with a first driven surface and a second driven surface. Upon insertion into a drive chuck, the deflection surface promotes self-alignment of the cutting tool and the drive chuck.

Abstract: A surgical cutting tool includes an elongated shaft and a cutting head. The shaft defines a coupling portion terminating at a proximal end of the shaft, a stem portion, and a distal portion. The stem portion defines a central axis. The coupling portion optionally defines a deflection surface positioned oblique with respect to the central axis and connected with a first driven surface and a second driven surface. Upon insertion into a drive chuck, the deflection surface promotes self-alignment of the cutting tool and the drive chuck.

Abstract: A blade coupling mechanism for a hand-held surgical cutting instrument includes a first coupling member including a first blade-contacting surface and a first outer perimeter sidewall adjacent the first blade contacting surface. It also includes a second coupling member including a second blade-contacting surface facing the first blade-contacting surface of the first coupling member. The second coupling member includes a second outer perimeter sidewall adjacent the second blade contacting surface. The second blade-contacting surface and the second outer perimeter sidewall meet to define an outer edge. The second coupling member including a bore through the second blade contacting surface. The bore and the second blade contacting surface meeting to define an inner edge. Blade-engaging protrusions project from at least one of the first and second blade-contacting surfaces. The protrusions are spaced closer to the outer edge than the inner edge.

Abstract: Disclosed is a system to engage one or more tools. In the system a drive shaft and collet may be assembled to engage and disengage, selectively, a plurality of tools. Further, a tracking device may be used to track a location of at least a portion of the tool.