Adjustable dorsal night splint
A dorsal night splint has dynamic adjustable features that allow the patient to adjust the splint while in use to control the stretching of the plantar fascia and Achilles. A semi-rigid flexible frame is included along with a tightening strap that is anchored to the frame and by which the patient can tension the strap and adjust the structure of the frame to fit the patient's desired therapeutic or prophylactic needs.
1. A splint for supporting a user's planter fascia, comprising:
a flexible semi-rigid frame having a top side and an under side, the frame forming a proximal surface configured to extend vertically along a user's shin and upper ankle and a distal surface configured to extend along the top of the user's foot;
a first receptacle in the proximal surface configured to engage a strap and a second receptacle in the distal surface configured to engage a strap;
an adjustable, inelastic tightening strap configured to engage the first and second receptacles, configured such that tightening of the strap pulls the distal surface toward the proximal surface so as to stretch the user's plantar fascia; and
a soft housing configured to attach the frame to the user's lower leg and fit under the user's foot.
2. The splint of claim 1 , wherein the tightening strap has a first end configured to anchor to one of the distal surface and the proximal surface and a second end, the splint being configured such that pulling the second end tightens the splint.
3. The splint of claim 2 , wherein the tightening strap forms a pulley having a first section, a second section, and a fold between the first and second sections.
4. The splint of claim 3 , wherein the first section of the tightening strap extends from the distal surface to the proximal surface, and the second section of the tightening strap extends from the proximal surface to the distal surface.
5. The splint of claim 3 , wherein a first end of the tightening strap is configured to anchor to the distal surface and a second end of the tightening strap is configured to loop through the second receptacle.
6. The splint of claim 3 , wherein the tightening strap includes a third section and a fold between the third section and the second section.
7. The splint of claim 2 , wherein the second end of the tightening strap is configured to extend from the second receptacle toward the user, at least when the splint is worn.
8. The splint of claim 2 , wherein pulling the second end draws the distal surface toward the proximal surface.
9. The splint of claim 2 , comprising a bend between the proximal and distal surfaces and a space between the tightening strap and the bend.
10. The splint of claim 1 , wherein the frame includes a flap extending vertically along a side edge and attached to the edge by a hinge.
11. The splint of claim 10 , comprising first and second hinged flaps extending along lateral and medial edges, respectively, of the frame.
12. The splint of claim 11 , wherein the first receptacle is spaced between the first and second hinged flaps along the proximal surface.
13. The splint of claim 12 , wherein the first receptacle is located away from an edge of the proximal surface.
14. The splint of claim 11 , wherein the first and second hinged flaps are co-molded and integral with the frame.
15. The splint of claim 10 , wherein the hinged flap includes a slot configured to receive a portion of the soft housing, and wherein the slot bends along the hinge so as to conform to the user's leg.
16. The splint of claim 1 , comprising a forefoot support pad configured to be disposed between the user's toes and the soft housing.
17. The splint of claim 16 , wherein the forefoot support pad includes a distal lift area configured to fit under the user's toes and a proximal support area configured to fit behind the ball of the user's foot, wherein the distal lift area is thicker than the proximal support area.
18. The splint of claim 17 , wherein the forefoot support pad includes a trough spaced between the distal lift area and the proximal support area, the trough being configured to receive the ball of the user's foot.
19. The splint of claim 1 , wherein the soft housing comprises a layered set of materials.
20. The splint of claim 19 , wherein the layered set of materials comprises a laminate material including an open-cell foam sandwiched in part between two layers of unbroken loop material.
21. The splint of claim 20 , wherein the layered set of materials comprises neoprene.
22. The splint of claim 1 , further comprising an adjustable forefoot strap configured to attach to the soft housing so as to extend under the user's foot and across the front of the user's toes, the adjustable forefoot strap further being configured to attach to the distal surface.
23. The splint of claim 22 , wherein the adjustable forefoot strap is configured to be secured to the splint by the inelastic tightening strap.
24. The splint of claim 1 , further comprising a padded liner configured to extend between the frame and the user's leg.
25. The splint of claim 24 , wherein the liner comprises open cell foam.
26. The splint of claim 1 , wherein the soft housing includes a plurality of straps, and the frame includes a plurality of corresponding through-holes, the splint being configured such that tightening the plurality of straps tightens the frame to the user's leg.
27. The splint of claim 26 , comprising a first pair of hinged side flaps fixed, respectively, to lateral and medial side edges of the frame along a tapered arc section, each flap having a slot configured to receive a soft fastening strap.
28. The splint of claim 1 , wherein the frame includes a tapered section disposed along an edge of the frame between the proximal and distal surfaces, the tapered section being configured to conform to the user's ankle.
29. The splint of claim 1 , wherein the second receptacle is disposed away from an edge of the distal surface.