Abstract: A rotary surgical assembly is disclosed. The assembly has a plurality of cutting teeth (216), a hollow dome (200) and a spindle (10). The hollow dome has a pole having a pole axis X, and a cutting surface featuring some of the cutting teeth. The cutting surface includes a curved part (214) and a substantially flat part (212) proximal the pole with an aperture (210) extending therethrough. The spindle has a proximal end (12) and a distal end (14) including a spindle mounting element (16). The spindle mounting element is secured to the dome beneath the substantially flat part of the cutting surface. The spindle mounting element has a cutting tooth (22) that extends distally through the cutting surface's aperture to form one of the said plurality of cutting teeth. A kit, and methods of manufacturing the rotary surgical assembly are described also.

Abstract: A rotary surgical assembly is disclosed. The assembly has a plurality of cutting teeth (216), a hollow dome (200) and a spindle (10). The hollow dome has a pole having a pole axis X, and a cutting surface featuring some of the cutting teeth. The cutting surface includes a curved part (214) and a substantially flat part (212) proximal the pole with an aperture (210) extending therethrough. The spindle has a proximal end (12) and a distal end (14) including a spindle mounting element (16). The spindle mounting element is secured to the dome beneath the substantially flat part of the cutting surface. The spindle mounting element has a cutting tooth (22) that extends distally through the cutting surface's aperture to form one of the said plurality of cutting teeth. A kit, and methods of manufacturing the rotary surgical assembly are described also.

Abstract: A surgical instrument assembly includes a metallic hemispherical component and a driver component removably coupled to the hemispherical component. The metallic hemispherical component has a convex outer surface configured to engage a patient's natural acetabulum, a concave inner surface positioned opposite the outer surface and defining a cavity in the hemispherical component, a plurality of cutting teeth extending outwardly from the outer surface, and a plurality of apertures defined in the inner surface. The driver component has a shank and a plurality of ribs secured to, and extending outwardly from, the shank. Each rib has a tab that is received in a corresponding aperture of the hemispherical component to secure the driver component to the hemispherical component.

Abstract: A rotary surgical assembly is disclosed. The assembly has a plurality of cutting teeth (216), a hollow dome (200) and a spindle (10). The hollow dome has a pole having a pole axis X, and a cutting surface featuring some of the cutting teeth. The cutting surface includes a curved part (214) and a substantially flat part (212) proximal the pole with an aperture (210) extending therethrough. The spindle has a proximal end (12) and a distal end (14) including a spindle mounting element (16). The spindle mounting element is secured to the dome beneath the substantially flat part of the cutting surface. The spindle mounting element has a cutting tooth (22) that extends distally through the cutting surface's aperture to form one of the said plurality of cutting teeth. A kit, and methods of manufacturing the rotary surgical assembly are described also.

Abstract: Surgical cutting instruments and methods of use are described. The surgical cutting instrument (100) comprises an instrument body (102) with a first attachment mechanism (106) at a distal end. A cutter (104) has a central core (110), a plurality of cutting formations (130, 136) and a plurality of lobes (112, 114, 116) extending from the central core. The central core has side walls (118, 120, 122) which define an entirely open mouth and the side walls include a second attachment mechanism (140, 142, 144) which can interact with the first attachment mechanism to releasably attach the cutter to the distal end of the instrument body. At least one cutting formation (136) is provided on an end outer face (138) of the cutter opposite the entirely open mouth.

Abstract: An orthopaedic surgical instrument for positioning an acetabular prosthetic component in a patient's surgically-prepared acetabulum includes a surgical tool configured to be coupled to the acetabular prosthetic component, and a gravity-based position indicator removably coupled to the surgical tool. The position indicator includes a first marking indicating a first position of the acetabular prosthetic component, and a second marking indicating a second position.

Abstract: An orthopedic surgical instrument for positioning an acetabular prosthetic component in a patient's surgically-prepared acetabulum includes a surgical tool configured to be coupled to the acetabular prosthetic component, and a gravity-based position indicator removably coupled to the surgical tool. The position indicator includes a first marking indicating a first position of the acetabular prosthetic component, and a second marking indicating a second position.

Abstract: A surgical instrument assembly includes a metallic hemispherical component and a driver component removably coupled to the hemispherical component. The metallic hemispherical component has a convex outer surface configured to engage a patient's natural acetabulum, a concave inner surface positioned opposite the outer surface and defining a cavity in the hemispherical component, a plurality of cutting teeth extending outwardly from the outer surface, and a plurality of apertures defined in the inner surface. The driver component has a shank and a plurality of ribs secured to, and extending outwardly from, the shank. Each rib has a tab that is received in a corresponding aperture of the hemispherical component to secure the driver component to the hemispherical component.

Abstract: Devices and methods for removing a spinal disc are provided herein. Discectomy instruments are disclosed that can remove a spinal disc in a single-pass, i.e., without repeatedly inserting and removing the instrument from a patient. In an exemplary embodiment, the discectomy instrument includes a distal housing, at least one cutting blade, and a handle. When the distal housing is positioned adjacent to a spinal disc, a handle can be actuated to advance the cutting blade along a substantially arc-shaped path through the disc. In certain aspects, the path of the blade can correspond to the anatomy of the disc and to the approach used to access the spine. A second cutting blade can be advanced through the disc and can intersect with the arc-shaped path, forming a complete cut. The cut disc can be received in the distal housing and removed from the patient.

Abstract: Surgical cutting instruments and methods of use are described. The surgical cutting instrument (100) comprises an instrument body (102) with a first attachment mechanism (106) at a distal end. A cutter (104) has a central core (110), a plurality of cutting formations (130, 136) and a plurality of lobes (112, 114, 116) extending from the central core. The central core has side walls (118, 120, 122) which define an entirely open mouth and the side walls include a second attachment mechanism (140, 142, 144) which can interact with the first attachment mechanism to releasably attach the cutter to the distal end of the instrument body. At least one cutting formation (136) is provided on an end outer face (138) of the cutter opposite the entirely open mouth.

Abstract: An orthopaedic surgical instrument for positioning an acetabular prosthetic component in a patient's surgically-prepared acetabulum includes a surgical tool configured to be coupled to the acetabular prosthetic component, and a gravity-based position indicator removably coupled to the surgical tool. The position indicator includes a first marking indicating a first position of the acetabular prosthetic component, and a second marking indicating a second position.

Abstract: Devices and methods for removing a spinal disc are provided herein. Discectomy instruments are disclosed that can remove a spinal disc in a single-pass, i.e., without repeatedly inserting and removing the instrument from a patient. In an exemplary embodiment, the discectomy instrument includes a distal housing, at least one cutting blade, and a handle. When the distal housing is positioned adjacent to a spinal disc, a handle can be actuated to advance the cutting blade along a substantially arc-shaped path through the disc. In certain aspects, the path of the blade can correspond to the anatomy of the disc and to the approach used to access the spine. A second cutting blade can be advanced through the disc and can intersect with the arc-shaped path, forming a complete cut. The cut disc can be received in the distal housing and removed from the patient.

Abstract: An orthopaedic surgical instrument for positioning an acetabular prosthetic component in a patient's surgically-prepared acetabulum includes a surgical tool configured to be coupled to the acetabular prosthetic component, and a gravity-based position indicator removably coupled to the surgical tool. The position indicator includes a first marking indicating a first position of the acetabular prosthetic component, and a second marking indicating a second position.

Abstract: Devices and methods for removing a spinal disc are provided herein. Discectomy instruments are disclosed that can remove a spinal disc in a single-pass, i.e., without repeatedly inserting and removing the instrument from a patient. In an exemplary embodiment, the discectomy instrument includes a distal housing, at least one cutting blade, and a handle. When the distal housing is positioned adjacent to a spinal disc, a handle can be actuated to advance the cutting blade along a substantially arc-shaped path through the disc. In certain aspects, the path of the blade can correspond to the anatomy of the disc and to the approach used to access the spine. A second cutting blade can be advanced through the disc and can intersect with the arc-shaped path, forming a complete cut. The cut disc can be received in the distal housing and removed from the patient.

Abstract: A controlled force surgical implant impaction instrument is provided which includes a striking assembly, a retaining pin, and an actuator component. The striking assembly is configured to impact a surgical implant. The retaining pin is moveable between a first position and a second position. In the first position, the retaining pin inhibits distal movement of the striking assembly. In the second position, the retaining pin does not inhibit distal movement of the striking assembly. The actuator component includes a reloading channel. The actuator component is movable between a third position and a fourth position. In the third position, the retaining pin is in the first position and the retaining pin cannot be forced along the reloading channel. In the fourth position, the striking assembly can be used to move the retaining pin along the reloading channel.

Abstract: Devices and methods for removing a spinal disc are provided herein. Discectomy instruments are disclosed that can remove a spinal disc in a single-pass, i.e., without repeatedly inserting and removing the instrument from a patient. In an exemplary embodiment, the discectomy instrument includes a distal housing, at least one cutting blade, and a handle. When the distal housing is positioned adjacent to a spinal disc, a handle can be actuated to advance the cutting blade along a substantially arc-shaped path through the disc. In certain aspects, the path of the blade can correspond to the anatomy of the disc and to the approach used to access the spine. A second cutting blade can be advanced through the disc and can intersect with the arc-shaped path, forming a complete cut. The cut disc can be received in the distal housing and removed from the patient.

Abstract: A controlled force surgical implant impaction instrument is provided which includes a striking assembly, a retaining pin, and an actuator component. The striking assembly is configured to impact a surgical implant. The retaining pin is moveable between a first position and a second position. In the first position, the retaining pin inhibits distal movement of the striking assembly. In the second position, the retaining pin does not inhibit distal movement of the striking assembly. The actuator component includes a reloading channel. The actuator component is movable between a third position and a fourth position. In the third position, the retaining pin is in the first position and the retaining pin cannot be forced along the reloading channel. In the fourth position, the striking assembly can be used to move the retaining pin along the reloading channel.

Abstract: An orthopaedic surgical instrument for positioning an acetabular prosthetic component in a patient's surgically-prepared acetabulum includes a surgical tool configured to be coupled to the acetabular prosthetic component, and a gravity-based position indicator removably coupled to the surgical tool. The position indicator includes a first marking indicating a first position of the acetabular prosthetic component, and a second marking indicating a second position.