An abrasive head with clean gas infeed for cleaning/removing material surfaces and splitting/cutting materials by a liquid beam enriched with solid abrasive particles to extend the tool lifetime by eliminating damage to the liquid jet's aperture by the abrasive, avoid degrading the abrasive inside the tool and increase the cutting power and flow efficiency.

An abrasive head with clean gas infeed for cleaning/removing material surfaces and splitting/cutting materials by a liquid beam enriched with solid abrasive particles to extend the tool lifetime by eliminating damage to the liquid jet's aperture by the abrasive, avoid degrading the abrasive inside the tool and increase the cutting power and flow efficiency.

A carrier assembly for holding a hose that includes a main body having a first portion movingly engaged with a second portion. There is a guide rail disposed on at least one of the first portion, and the second portion. Either the first portion or the second portion is configured with a gripper element, and a latch.

A carrier assembly for holding a hose that includes a main body having a first portion movingly engaged with a second portion. There is a guide rail disposed on at least one of the first portion, and the second portion. Either the first portion or the second portion is configured with a gripper element, and a latch.

A cutting system includes a material removal tool having a fluid nozzle with an adjustable diameter, a workpiece including a target shape for removal, and a controller operable to adjust the diameter of the nozzle to vary fluid flow and control an amount of material removed by the material removal tool. The controller is adapted to adjust the nozzle to vary the fluid flow based on a position of the nozzle and workpiece data preoperatively obtained from the workpiece via a continuous feedback loop. A method of cutting a bone is also provided.

A cutting system includes a material removal tool having a fluid nozzle with an adjustable diameter, a workpiece including a target shape for removal, and a controller operable to adjust the diameter of the nozzle to vary fluid flow and control an amount of material removed by the material removal tool. The controller is adapted to adjust the nozzle to vary the fluid flow based on a position of the nozzle and workpiece data preoperatively obtained from the workpiece via a continuous feedback loop. A method of cutting a bone is also provided.

A mixing chamber for a handpiece of a medical device, in particular a dental abrasive jet device, having a first supply line for a first fluid stream, in particular a liquid fluid flow, and a second supply line for a second fluid flow, in particular a powder/air mixture, where the two supply lines extend along a central axis and the second supply line-ends within the mixing chamber in an outlet the mixing chamber having a mixing region, in which the first fluid flow is deflected towards the second fluid flow, downstream of the outlet, and an accelerating region in which the first supply line extends parallel to the second supply line over the length of at least 3 mm.

A mixing chamber for a handpiece of a medical device, in particular a dental abrasive jet device, having a first supply line for a first fluid stream, in particular a liquid fluid flow, and a second supply line for a second fluid flow, in particular a powder/air mixture, where the two supply lines extend along a central axis and the second supply line-ends within the mixing chamber in an outlet the mixing chamber having a mixing region, in which the first fluid flow is deflected towards the second fluid flow, downstream of the outlet, and an accelerating region in which the first supply line extends parallel to the second supply line over the length of at least 3 mm.

In an embodiment, a method of hardening a surface of a substrate comprises directing a waterjet having a transition flow region, the waterjet comprising water and particles, at a surface of a substrate such that the waterjet impacts the surface within the transition flow region to provide a layer of embedded particles underneath the surface of the substrate, thereby forming a hardened substrate. The hardened substrates are also provided.

A blasting apparatus includes: a storage container including a storage chamber; a volumetric feeder; and a nozzle configured to project, together with compressed air, an abrasive supplied from the volumetric feeder, wherein: the volumetric feeder includes: a casing configured to define a space on an inside, and including an introduction port causing the space and the storage chamber to communicate with each other and a supply port opened toward a lower side in a position separated from the introduction port in a horizontal direction; and a screw including a rotational shaft housed in the casing and extending along the horizontal direction, the screw configured to carry the abrasive in the space toward the supply port from the introduction port by rotating about the rotational shaft; wherein the screw is housed in the casing in such a way as not to overlap the supply port in a vertical direction.