The present subject matter provides a cigarette preparation device including: a chopping module configured to chop smoke material for preparing chopped smoke material; and a rolling module coupled to the chopping module, configured to roll cigarettes with cigarette paper and chopped smoke material. Additional embodiments of the cigarette preparation device, and methods for chopping a smoke material, rolling a cigarette, and preparing a cigarette with the cigarette preparation device of the present subject matter, are described herein.

The present subject matter provides a cigarette preparation device including: a chopping module configured to chop smoke material for preparing chopped smoke material; and a rolling module coupled to the chopping module, configured to roll cigarettes with cigarette paper and chopped smoke material. Additional embodiments of the cigarette preparation device, and methods for chopping a smoke material, rolling a cigarette, and preparing a cigarette with the cigarette preparation device of the present subject matter, are described herein.

A two-shaft shredder includes a shredder housing, a first cutter disc unit, and a second cutter disc unit. The first cutter disc unit has at a first axial end a first bearing unit (80) with a first bearing housing and at a second axial end a second bearing unit with a second bearing housing. A first cutter disc block is rotatably mounted about a first axis of rotation. The second cutter disc unit has at a first axial end a third bearing unit with a third bearing housing and at a second axial end a fourth bearing unit with a fourth bearing housing A second cutter disc block is rotatably mounted about a second axis of rotation. The shredder housing has a first maintenance hatch cover which, in a release position, permits removal of the first cutter disc unit together with the first and second bearing units.

A two-shaft shredder includes a shredder housing, a first cutter disc unit, and a second cutter disc unit. The first cutter disc unit has at a first axial end a first bearing unit (80) with a first bearing housing and at a second axial end a second bearing unit with a second bearing housing. A first cutter disc block is rotatably mounted about a first axis of rotation. The second cutter disc unit has at a first axial end a third bearing unit with a third bearing housing and at a second axial end a fourth bearing unit with a fourth bearing housing A second cutter disc block is rotatably mounted about a second axis of rotation. The shredder housing has a first maintenance hatch cover which, in a release position, permits removal of the first cutter disc unit together with the first and second bearing units.

An implant shredder includes a base and a cutting member. The base includes a first chamber and a second chamber intercommunicating with the first chamber. The first chamber includes an inlet. The second chamber includes an outlet. The cutting member is received in the second chamber. The cutting member is driven by a driving member to rotate. The cutting member includes a plurality of cutting edges located on a circumference of a same radius. The plurality of cutting edges is rotatably disposed adjacent to a location intercommunicating with the first chamber. An implant forming method includes creating data of an outline of an implant; producing a shaping mold based on the data; and cutting a to-be-processed object with the implant shredder, then mixing the to-be-proceed object with a biological tissue glue to obtain a raw material, and filling the raw material into the shaping mold to form the implant.

An implant shredder includes a base and a cutting member. The base includes a first chamber and a second chamber intercommunicating with the first chamber. The first chamber includes an inlet. The second chamber includes an outlet. The cutting member is received in the second chamber. The cutting member is driven by a driving member to rotate. The cutting member includes a plurality of cutting edges located on a circumference of a same radius. The plurality of cutting edges is rotatably disposed adjacent to a location intercommunicating with the first chamber. An implant forming method includes creating data of an outline of an implant; producing a shaping mold based on the data; and cutting a to-be-processed object with the implant shredder, then mixing the to-be-proceed object with a biological tissue glue to obtain a raw material, and filling the raw material into the shaping mold to form the implant.

A bone mill includes a housing, at least a first bone milling tool, a proximal bearing sleeve, and a distal bearing sleeve. The housing defines a work chamber. The work chamber has a first axial end, a second axial end, a feed input opening, and an output opening. The bone milling tool is configured to be disposed within the work chamber, and extends at least from a first axial end to the second axial chamber. The proximal bearing sleeve is supported by the housing proximate the first axial end, and a distal bearing sleeve supported by the housing proximate the second axial end. The proximal bearing sleeve and the distal bearing sleeve support the bone milling tool and allow rotation of the bone milling tool within the work chamber about an axis.

A bone mill includes a housing, at least a first bone milling tool, a proximal bearing sleeve, and a distal bearing sleeve. The housing defines a work chamber. The work chamber has a first axial end, a second axial end, a feed input opening, and an output opening. The bone milling tool is configured to be disposed within the work chamber, and extends at least from a first axial end to the second axial chamber. The proximal bearing sleeve is supported by the housing proximate the first axial end, and a distal bearing sleeve supported by the housing proximate the second axial end. The proximal bearing sleeve and the distal bearing sleeve support the bone milling tool and allow rotation of the bone milling tool within the work chamber about an axis.

An air extraction and heat dissipation structure for paper shredders, wherein the outer wall of the main handle is inlaid with switch button, the right side of the handle is connected with the power cord hook, the end of the handle is fixed with the connecting rod, and the bottom end of the rod is connected with a main body. The motor is arranged on the inner side of the heat dissipation port, the end of the motor is connected with the dust suction device, at the lower left end of which the dust storage chamber is arranged, and a dust suction channel is fixed at the right end of the chamber. The bottom end of the channel is connected with rollers, the left side of the rollers is provided with a suction cup, and the surface of the suction cup is provided with a dust suction port for paper shredders.

An air extraction and heat dissipation structure for paper shredders, wherein the outer wall of the main handle is inlaid with switch button, the right side of the handle is connected with the power cord hook, the end of the handle is fixed with the connecting rod, and the bottom end of the rod is connected with a main body. The motor is arranged on the inner side of the heat dissipation port, the end of the motor is connected with the dust suction device, at the lower left end of which the dust storage chamber is arranged, and a dust suction channel is fixed at the right end of the chamber. The bottom end of the channel is connected with rollers, the left side of the rollers is provided with a suction cup, and the surface of the suction cup is provided with a dust suction port for paper shredders.