초록 ▼

A surgical instrument comprising an elongate reusable handle and disposable, interchangeable sheathed blade modules. Each sheathed blade module including an elongate tubular sheath having a laterally arced blade guiding forward end portion of either a cylindrical or tubular configuration. The arced

A surgical instrument comprising an elongate reusable handle and disposable, interchangeable sheathed blade modules. Each sheathed blade module including an elongate tubular sheath having a laterally arced blade guiding forward end portion of either a cylindrical or tubular configuration. The arced portion defines a guide path for a blade received within the sheath. The blade, through interconnection with a slide member on the handle module, is selectively moved between a first protected position entirely within the sheath and a second position wherein the surgical tip portion of the blade is exposed. Outward movement of the blade tip portion is directed along a predetermined path by the curved forward end portion of the sheath, while at the same time providing for a complete exposure of the blade tip portion beyond the structure of the sheath. The slide member of the sheath is controlled by a single finger of the one hand used to hold the handle module.

대표청구항 ▼

In a surgical instrument, a sheathed blade assembly, said assembly comprising an elongate sheath and an elongate surgical blade longitudinally received within said sheath for reciprocal movement therein, said sheath having forward and rear end portions, said sheath, other than for said forward end p

In a surgical instrument, a sheathed blade assembly, said assembly comprising an elongate sheath and an elongate surgical blade longitudinally received within said sheath for reciprocal movement therein, said sheath having forward and rear end portions, said sheath, other than for said forward end portion, being linear, said forward end portion being laterally directed away from the longitudinal axis of the remainder of said sheath and having a predetermined configuration defining a predetermined guide path away from said longitudinal axis, said forward end portion terminating in an open blade passing end, said blade having a forward surgical tip portion selectively projectable through and beyond said blade passing end and along the predetermined path defined by the forward end portion of the sheath through which the blade passes, said blade tip portion being completely retractable into said sheath, and means external of said sheath engaging said blade for a selective reciprocation thereof relative to said sheath and a selective extension and retraction of the tip end portion of the blade relative to the open blade passing end, said blade tip portion, when extended beyond said open blade passing end, being completely exposed.