Shaping cutter for joint surgical operation

[0037] Example one

[0038] Such as Figure 1 to Figure 6 Shown is the first embodiment of the planing knife for joint surgery of the present invention. It includes an outer tube 1 and an inner tube 2 that can rotate around its axis and is sleeved in the outer tube. The front end of the inner tube 2 is provided for rotation. The knife teeth 3 for cutting tissues, the front end of the outer tube 1 is provided with at least one planer window 4 that can accommodate at least part of the exposed teeth; the inner tube 2 is provided with a suction hole for sucking chips through a negative pressure suction system, and the inner tube 2 One end of the tube is connected with a power handle that can control the one-way rotation and reciprocating rotation of the inner tube.

[0039] In the implementation of this embodiment, the one-way rotary motion and reciprocating rotary motion of the inner tube 2 are controlled by the power handle. The part of the inner tube 2 exposed on the outer tube 1 is ro

[0042] Example two

[0043] Such as Figure 7 to Figure 9 Shown is the second embodiment of the planing knife for joint surgery of the present invention. This embodiment is similar to the first embodiment, except that the tooth 3 is a second tooth window 32 with a crescent shape. The two-cut window 32 includes a chamfered surface 321 at the front end of the inner tube and a first section 322 perpendicular to the chamfered surface 321; the planer window 4 is a curved section 42 obtained by oblique cutting of the outer tube, and the second window 31 at least partially protrudes In the arc where the arc 42 is located. Cutting with the crescent-shaped second tooth window 32 can obtain a relatively flat and smooth cut surface. During the operation, the part of the inner tube 2 exposed on the outer tube 1 is rotated at a high speed to cooperate with the outer tube to cut the tissue.

[0044] Example three

[0045] Such as Figure 10 to Figure 11 Shown is the third embodiment of the planing knife for joint surgery of the present invention. This embodiment is similar to the first embodiment, except that the tooth 3 is a third tooth window 33 having a sawtooth shape. The three-tooth window 33 includes a serrated surface 331 parallel to the axis of the inner tube 2 and a cut surface 332 perpendicular to the serrated surface 331. A plurality of planer windows 4 are evenly arranged around the head of the outer tube. When removing complex angles of tissue, it can easily and quickly perform multi-angle tissue or cartilage cutting and planing operations, without the need to rotate the planer at too many angles, reducing surgical operations, improving surgical efficiency, and saving surgical time; in addition, these planing knife windows 4 It can also play a certain protective role to prevent the knife tooth 3 from excessively cutting the tissue. In this embodiment, there