Wear compensating axial connection
OwnerEddy H. Del Rio, William E. Anspach, Jr.inventors
Life of this patent
Estimating the term…
Abstract
A surgical instrument has a motor housing with a cylindrical member extending therefrom and has a pin projecting radially from the cylindrical member. A nose piece removably attached to the housing has a circular aperture which receives the cylindrical member and which has a channel within which the pin slides during attachment and removal. The nose piece includes a cantilevered arcuate spring arm that urges the pin along the channel toward a position at which the pin is wedged against a wall of the channel to force the nose piece into an operating engagement with the motor housing and retains the pin in the channel resisting detachment.
Claims14
A bayonet-type connector between two members, one member having a cylindrical projection extending from a flat surface, a second member having an aperture with a flat end surface for receiving said cylindrical projection, said cylindrical projection having diametrically opposed pins spaced from said flat surface, a first sleeve in said aperture having diametrically opposed guide channels for guiding said pins to a position where said flat end surface is wedged against said flat surface, a second sleeve in said aperture having spring arms for acting on said pins in said channels to bias said flat surface and said flat end surface together.
A surgical instrument comprising:
- a motor housing having a cylindrical member with a radially projecting first pin, and having a flange surface which extends outwardly from the cylindrical member and is spaced from the first pin;
- a nose piece having an end with an aperture having a flat end surface therearound which receives the cylindrical member, and the aperture having a channel within which the first pin slides so that said flange surface and flat end surface engage each other, wherein the channel has an open end, said nose piece including a cantilevered spring arm for urging the first pin along the channel to force said flange surface and flat end surface together and retain the first pin in the channel;
- wherein said nose piece comprises:
- a first tubular sleeve within the aperture of said nose piece and having a first end, said first tubular sleeve having a first channel formed by a first portion which extends inwardly from the first end and having a second portion extending circumferentially from the first portion, and the cantilevered spring arm is formed between the second portion of the first channel and the first end;
- a second tubular sleeve located within the aperture of said nose piece and having a second end, said second tubular sleeve having a second channel formed by a first portion extending inwardly from the second end and a second portion extending circumferentially at an angle inwardly from the first portion;
- and
- wherein one of the first tubular sleeve and second tubular sleeve is within the other one of the first tubular sleeve and second tubular sleeve, and the first channel being substantially aligned with the second channel.
Dependencies are inferred from the claim text.