Retractors

A surgical retractor, comprising:

• a support;
• first and second arms extending from a same side of the support and spaced apart from each other along the support;
• a first anatomy engaging member having a first interior face and a first exterior face;
• and
• a second anatomy engaging member having a second interior face and a second exterior face, wherein:
• the first anatomy engaging member depends along its length from the first arm whereby the first exterior face faces away from the second anatomy engaging member;
• the second anatomy engaging member depends along its length from the second arm whereby the second exterior face faces away from the first anatomy engaging member;
• each of the first and second exterior faces integrally defines on their surfaces at least one elongate protrusion across the surface of the respective exterior faces, the elongate protrusion having an elongate axis extending transversely on the surface of the respective exterior face of the respective anatomy engaging member whereby the elongate protrusion is integral to the exterior face of the respective anatomy engaging member;
• each elongate protrusion has first and second protrusion sides extending up from and transversely across the surface of the respective exterior face, the first protrusion side closer than the second protrusion side to a proximal end of the respective anatomy engaging member;
• each elongate protrusion defines an acute angle with the respective exterior face, the acute angle defined between the first protrusion side and a first part of the exterior face on a first side of the elongate protrusion, the first part of the exterior face nearer to the proximal end of the respective anatomy engaging member than a second part of the exterior face on a second side of the elongate protrusion;
• and
• the first and second protrusion sides are substantially parallel with each other.