초록 ▼

A surgical tool system (20) with replaceable surgical cutting accessories (26) and attachments (34) for holding the tools. This system includes a handpiece (22) to which the cutting accessory and attachment are releasably attached. Collet (50) located inside a drill housing (44) located at one end o

A surgical tool system (20) with replaceable surgical cutting accessories (26) and attachments (34) for holding the tools. This system includes a handpiece (22) to which the cutting accessory and attachment are releasably attached. Collet (50) located inside a drill housing (44) located at one end of the handpiece securely fastens the surgical tool to a motor (24) also located in the handpiece. Leaf spring assembly (46) flush with the drill housing releasably secures the attachment in place. A single actuating collar (52) located around the outside of the drill housing both controls the locking force supplied by the collet and selectively relaxes the leaf spring assembly.

대표청구항 ▼

[ What is claimed is:] [12.] An attachment for coupling a cutting accessory to a surgical handpiece, the surgical handpiece having a motor; said attachment including:an attachment housing have opposed front and rear ends, said attachment housing having a center space that extends forward from said r

[ What is claimed is:] [12.] An attachment for coupling a cutting accessory to a surgical handpiece, the surgical handpiece having a motor; said attachment including:an attachment housing have opposed front and rear ends, said attachment housing having a center space that extends forward from said rear end for positioning said attachment housing over the surgical handpiece and an inwardly directed lip located adjacent said rear end, said lip having teeth for engaging the surgical handpiece to prevent rotation of said attachment housing;a drive shaft rotatably secured to said attachment housing that extends away from said rear end of said attachment housing for connection to the motor of the surgical handpiece; anda coupling assembly disposed in said front end of said attachment housing, said coupling assembly including:a collet housing coupled to said drive shaft to rotate with said drive shaft, said collet housing having an axially extending shaft bore for receiving a shaft of the cutting accessory, and said collet housing shaped to form at least one opening that extends into said shaft bore;a locking member position adjacent each said opening in said collet housing for selective positioning in said shaft bore of said collet housing so that when said locking member is positioned in said shaft bore of said collet housing, said locking member holds the shaft of the cutting accessory for rotation with said drive shaft and when said locking member is spaced from said shaft bore, the shaft of the cutting accessory is removable from said shaft bore of said collet housing;a lock ring disposed around said collet housing and displaceable along said collet housing from a first position wherein said lock ring abuts said locking member so as to latch said locking member into said shaft bore of said collet housing and a second position wherein said lock ring is spaced from said locking member;a biasing member that normally urges said lock ring into said lock ring first position;a lock ring actuator disposed around said lock ring for selectively abutting said lock ring to move said lock ring from said lock ring first position to said lock ring second position; anda displaceable actuating member that is fitted over said attachment housing and is coupled to said lock ring actuator, said actuating member being movable between a run position and an accessory load position, wherein when said actuating member is moved from said run position to said accessory load position, said actuating member causes said lock ring actuator to abut said lock ring so as to cause said lock ring to move to said lock ring second position and said actuating member remains in said accessory load position until displaced from said accessory load position.