Patent ID: 8454504

Claim:
A surgical retractor, comprising: a ribs assembly; a mechanism for transferring of linear and rotational movement adapted to apply mechanical forces and moments to said ribs assembly; a cover disc wherein said mechanism for transferring of linear and rotational movement and said ribs assembly are mounted on said cover disc, wherein said mechanism for transferring of linear and rotational movements includes: (i) at least two main sliders, each one of said main sliders having a first interior thread and a second interior thread; (ii) an angular adjustment bolt mounted inside said first interior thread; (iii) a linear adjustment bolt mounted inside said second interior thread; and (iv) at least two slider pivots, each one of said slider pivots being disposed on one of said two main sliders, wherein at least one of said ribs is adapted for enabling of removal of said rib from said surgical retractor and assembly of said rib to said surgical retractor, wherein said removal and said assembly does not require the use of a tool, wherein said rib has a concave segment of a rib front surface adapted for transferring linear motion from said slider pivot and for rotating at least predetermined angle value around said slider pivot; a rib shoulder has a rib shoulder concave segment adapted for transferring linear motion from said slider among arms surface; a rib working arm width has a maximum value, wherein said maximum value is at most equal to a predetermined dimension value of a gap between the slider pivot and the slider among arms surface, wherein said rib has a rib working arm projection to center predetermined dimension value, between a rib front surface origin and perpendicularly to a plane on which said rib working arm front surface is located.