Illuminated surgical retractor
A surgical retractor including a blade molded from a polymer having at least a predetermined flexural strength, a handle, and a deepened portion connecting a proximal end of the blade to the handle, wherein the deepened portion increases in depth from the proximal end of the blade toward the handle, and wherein the blade, being molded from the polymer, and the deepened portion are configured such that the blade deforms less than 10 mm under 15 lbs of force applied thereto.
1. A surgical retractor, comprising:
a blade molded from a polymer having at least a predetermined flexural strength;
a handle;
a deepened portion connecting a proximal end of the blade to the handle, wherein the deepened portion increases in depth from the proximal end of the blade toward the handle;
wherein the blade, being molded from the polymer, and the deepened portion are configured such that the blade deforms less than 10 mm under 15 lbs of force applied thereto.
2. The surgical retractor of claim 1 , wherein the predetermined flexural strength is at least 300 Mpa.
3. The surgical retractor of claim 1 , wherein the predetermined flexural strength is 375 Mpa.
4. The surgical retractor of claim 1 , wherein the polymer is a glass-fiber reinforced polymer.
5. The surgical retractor of claim 4 , wherein the polymer is at least 50 wt % glass-fiber reinforced polymer.
6. The surgical retractor of claim 1 , wherein the polymer is a thermoplastic crystalline polymer.
7. The surgical retractor of claim 6 , wherein the polymer is a thermoplastic crystalline polymer of aromatic diamines and aromatic dicarboxylic anhydrides.
8. The surgical retractor of claim 1 , wherein the polymer is a polyarylamide compound.
9. The surgical retractor of claim 8 , wherein the polymer is at least 50 wt % glass-fiber reinforced polyarylamide.
10. The surgical retractor of claim 1 , wherein the polymer has a flexural modulus of at least 17 Gpa.
11. The surgical retractor of claim 1 , wherein the polymer has an impact strength of at least 100 J/M.
12. The surgical retractor of claim 1 , wherein a distal tip of the blade withstands over 30 lbs of force applied thereto.
13. The surgical retractor of claim 1 , wherein the blade has a thickness of 2 mm.
14. The surgical retractor of claim 1 , wherein the polymer comprises a non-conductive material that limits currents to less than 10 −6 A.
15. The surgical retractor of claim 1 , wherein the polymer is a radiolucent polymer.
16. The surgical retractor of claim 1 , wherein the blade, the deepened portion and the handle are integrally molded from the polymer.
17. The surgical retractor of claim 1 , wherein the deepened portion includes flanges along its sides, said flanges tapering in a direction of the blade.
18. The surgical retractor of claim 1 , further comprising an illumination assembly including at least one direct light source, said blade being configured to accommodate the at least one direct light source.
19. The surgical retractor of claim 1 , wherein the deepened portion is concave.