Abstract: A battery pack for a use with a powered surgical tool. The battery pack may include a housing with an outer wall and opposing first and second ends. The housing may include an elongated shape that extends between the first and second ends. A first member may extend across the first end of the housing and include a first aperture, and a second end member may extend across the second end of the housing and may include a second aperture. A passage may extend through the housing with a first end that aligns with the first aperture and a second end that aligns with the second aperture. The housing may be sized for a plurality of storage locations positioned between the first and second members and around the passage, and each of the storage locations may be configured to store a power cell.

Abstract: A surgical instrument for applying a rotational force to a structural element during a surgical procedure. The instrument may be designed for increasing an input force to produce an enlarged output force adequate for fracturing an excess section of the elongated element from a remainder of the structural element. The instrument may include an input mechanism that receives an external rotational input force, a planetary gear system that multiples the input force, and an output mechanism that attaches to and delivers the multiplied rotational output force to the excess section of the structural element. The output mechanism may also be configured to capture the separated excess section. The instrument may include a housing and a handle for grasping and manipulating during the surgical procedure.

Abstract: A surgical instrument for applying a rotational force to a structural element during a surgical procedure. The instrument may be designed for increasing an input force to produce an enlarged output force adequate for fracturing an excess section of the elongated element from a remainder of the structural element. The instrument may include an input mechanism that receives an external rotational input force, a planetary gear system that multiples the input force, and an output mechanism that attaches to and delivers the multiplied rotational output force to the excess section of the structural element. The output mechanism may also be configured to capture the separated excess section. The instrument may include a housing and a handle for grasping and manipulating during the surgical procedure.

Abstract: A battery pack for a use with a powered surgical tool. The battery pack may include a housing with an outer wall and opposing first and second ends. The housing may include an elongated shape that extends between the first and second ends. A first member may extend across the first end of the housing and include a first aperture, and a second end member may extend across the second end of the housing and may include a second aperture. A passage may extend through the housing with a first end that aligns with the first aperture and a second end that aligns with the second aperture. The housing may be sized for a plurality of storage locations positioned between the first and second members and around the passage, and each of the storage locations may be configured to store a power cell.

Abstract: A battery pack for a use with a powered surgical tool. The battery pack may include a housing with an outer wall and opposing first and second ends. The housing may include an elongated shape that extends between the first and second ends. A first member may extend across the first end of the housing and include a first aperture, and a second end member may extend across the second end of the housing and may include a second aperture. A passage may extend through the housing with a first end that aligns with the first aperture and a second end that aligns with the second aperture. The housing may be sized for a plurality of storage locations positioned between the first and second members and around the passage, and each of the storage locations may be configured to store a power cell.

Abstract: A battery pack for a use with a powered surgical tool. The battery pack may include a housing with an outer wall and opposing first and second ends. The housing may include an elongated shape that extends between the first and second ends. A first member may extend across the first end of the housing and include a first aperture, and a second end member may extend across the second end of the housing and may include a second aperture. A passage may extend through the housing with a first end that aligns with the first aperture and a second end that aligns with the second aperture. The housing may be sized for a plurality of storage locations positioned between the first and second members and around the passage, and each of the storage locations may be configured to store a power cell.

Abstract: A battery pack for a use with a powered surgical tool. The battery pack may include a housing with an outer wall and opposing first and second ends. The housing may include an elongated shape that extends between the first and second ends. A first member may extend across the first end of the housing and include a first aperture, and a second end member may extend across the second end of the housing and may include a second aperture. A passage may extend through the housing with a first end that aligns with the first aperture and a second end that aligns with the second aperture. The housing may be sized for a plurality of storage locations positioned between the first and second members and around the passage, and each of the storage locations may be configured to store a power cell.

Abstract: A surgical instrument for applying a rotational force to a structural element during a surgical procedure. The instrument may be designed for increasing an input force to produce an enlarged output force adequate for fracturing an excess section of the elongated element from a remainder of the structural element. The instrument may include an input mechanism that receives an external rotational input force, a planetary gear system that multiples the input force, and an output mechanism that attaches to and delivers the multiplied rotational output force to the excess section of the structural element. The output mechanism may also be configured to capture the separated excess section. The instrument may include a housing and a handle for grasping and manipulating during the surgical procedure.

Abstract: A surgical instrument for applying a rotational force to a structural element during a surgical procedure. The instrument may be designed for increasing an input force to produce an enlarged output force adequate for fracturing an excess section of the elongated element from a remainder of the structural element. The instrument may include an input mechanism that receives an external rotational input force, a planetary gear system that multiples the input force, and an output mechanism that attaches to and delivers the multiplied rotational output force to the excess section of the structural element. The output mechanism may also be configured to capture the separated excess section. The instrument may include a housing and a handle for grasping and manipulating during the surgical procedure.

Abstract: A surgical instrument for applying a rotational force to a structural element during a surgical procedure. The instrument may be designed for increasing an input force to produce an enlarged output force adequate for fracturing an excess section of the elongated element from a remainder of the structural element. The instrument may include an input mechanism that receives an external rotational input force, a cycloidal gear system that multiples the input force, and an output mechanism that attaches to and delivers the multiplied rotational output force to the excess section of the structural element. The output mechanism may also be configured to capture the separated excess section. The instrument may include a housing and a handle for grasping and manipulating during the surgical procedure.

Abstract: Methods and instrumentation particularly adapted for disc space preparation for insertion of implants from an anterior approach to the spine are provided. The instruments include a guide sleeve defining a channel having overlapping cylindrical working channel portions and lateral non-distracting extensions extending from reduced thickness wall portions. The guide sleeve has an overall reduced width configuration. A pair of distractors are provided. A first distractor includes a shaft and distal tip, each having convex walls. A second distractor includes a shaft and distal tip including a recessed area at least along the tip. The first distractor is at least partially received within the recessed area of the second distractor when the first and second distractors are in side-by-side relation and a reduced overall width of the distractors is obtained. Preferably, the first and second distractors are used with the guide sleeve. Methods using the disclosed instruments are also provided.

Abstract: A series of instruments (30, 80, 120, 210, 510, 550) are provided for direct-anterior and oblique-anterior disc space and end plate preparation. The instruments (30, 80, 120, 210, 510, 550) provide precise guidance for channel formation in the vertebral endplates by guiding rotating and bladed cutting instruments (122, 250, 580). Instrumentation (550) for oblique-anterior disc space preparation includes compound angulation to account for the angle of approach to the spine and the angulation between adjacent vertebrae. Methods and techniques for use of the instruments (30, 80, 120, 210, 510, 550) are also described.

Abstract: A surgical instrument for applying a rotational force to a structural element during a surgical procedure. The instrument may be designed for increasing an input force to produce an enlarged output force adequate for fracturing an excess section of the elongated element from a remainder of the structural element. The instrument may include an input mechanism that receives an external rotational input force, a planetary gear system that multiples the input force, and an output mechanism that attaches to and delivers the multiplied rotational output force to the excess section of the structural element. The output mechanism may also be configured to capture the separated excess section. The instrument may include a housing and a handle for grasping and manipulating during the surgical procedure.

Abstract: A surgical instrument for applying a rotational force to a structural element during a surgical procedure. The instrument may be designed for increasing an input force to produce an enlarged output force adequate for fracturing an excess section of the elongated element from a remainder of the structural element. The instrument may include an input mechanism that receives an external rotational input force, a cycloidal gear system that multiples the input force, and an output mechanism that attaches to and delivers the multiplied rotational output force to the excess section of the structural element. The output mechanism may also be configured to capture the separated excess section. The instrument may include a housing and a handle for grasping and manipulating during the surgical procedure.

Abstract: Instrument and implants are disclosed which provide for insertion of an implant into an intervertebral disc space from multiple approaches to the spine. Specifically, as a preferred aspect of the invention the implant includes a tapered portion and the implant may be inserted from multiple approaches to the spine with the orientation and taper properly oriented in the disc space regardless of the approach.

Abstract: Instrument and implants are disclosed which provide for insertion of an implant into an intervertebral disc space from multiple approaches to the spine. Specifically, as a preferred aspect of the invention the implant includes a tapered portion and the implant may be inserted from multiple approaches to the spine with the orientation and taper properly oriented in the disc space regardless of the approach.

Abstract: A series of instruments (30, 80, 120, 210, 510, 550) are provided for direct-anterior and oblique-anterior disc space and end plate preparation. The instruments (30, 80, 120, 210, 510, 550) provide precise guidance for channel formation in the vertebral endplates by guiding rotating and bladed cutting instruments (122, 250, 580). Instrumentation (550) for oblique-anterior disc space preparation includes compound angulation to account for the angle of approach to the spine and the angulation between adjacent vertebrae. Methods and techniques for use of the instruments (30, 80, 120, 210, 510, 550) are also described.

Abstract: A surgical tool for removing a portion of an implant is provided that includes a housing, a motor contained within the housing and coupled to the housing, and an output shaft having a distal end and a proximal end opposite the distal end, wherein the proximal end is coupled to the motor and the distal end has an opening configured to rotateably engage an implant. The surgical tool further includes a counter-torque sleeve extending around the output shaft having a proximal end and a distal end opposite the proximal end, wherein the proximal end is coupled to the housing and the distal end is configured to couple to the implant relative to the counter-torque sleeve. Upon a rotational force to the implant, the forces transmitted by the output shaft and the counter-torque sleeve are balanced by the coupling of the output shaft and counter-torque sleeve through the housing.

Abstract: A battery pack for a use with a powered surgical tool. The battery pack may include a housing with an outer wall and opposing first and second ends. The housing may include an elongated shape that extends between the first and second ends. A first member may extend across the first end of the housing and include a first aperture, and a second end member may extend across the second end of the housing and may include a second aperture. A passage may extend through the housing with a first end that aligns with the first aperture and a second end that aligns with the second aperture. The housing may be sized for a plurality of storage locations positioned between the first and second members and around the passage, and each of the storage locations may be configured to store a power cell.

Abstract: Instrument and implants are disclosed which provide for insertion of an implant into an intervertebral disc space from multiple approaches to the spine. Specifically, as a preferred aspect of the invention the implant includes a tapered portion and the implant may be inserted from multiple approaches to the spine with the orientation and taper properly oriented in the disc space regardless of the approach.