METHOD AND DEVICE FOR CORRECTING BONE DEFORMITIES

• US 20140025123A1
• Filed: 12/19/2012
• Published: 01/23/2014
• Est. Priority Date: 07/17/2012
• Status: Active Grant

• Current Assignee: FastForward Surgical Inc.
• Original Assignee: FastForward Surgical Inc.
• Inventors: ZEETSER, Vladimir, BURATTI, Dawn
• Granted Patent: US 8,998,904 B2
• Time in Patent Office: Days
• US Class Current: 606/289
• CPC Class Codes: A61B 17/8033 having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
• CPC Class Codes: A61B 17/8061 specially adapted for particular bones A61B17/70 and A61B17/74 take precedence
• CPC Class Codes: A61B 17/8085 with pliable or malleable elements or having a mesh-like structure, e.g. small strips A61B17/8071, A61B17/8076 take precedence
• CPC Class Codes: A61B 17/82 for bone cerclage apparatus for manipulating wires or straps A61B17/8861; wires, bands or straps other than cerclage A61B17/842
• CPC Class Codes: A61B 17/86 Pins or screws or threaded wires; nuts therefor A61B17/72 take precedence
• CPC Class Codes: Y10S 606/902 Cortical plate specifically adapted for a particular bone
• CPC Class Codes: Y10S 606/906 Small bone plate

Abstract

The present invention is a method and device for the correction and reduction of bone deformities, such as metatarsus primus adductus, using a plate body with winged buttresses and dorsal loop. The method and device can be affixed to a bone without any drilling or violating of the bone and can use a tethering technique which does not require drilling into the second metatarsal, nor does it require the placement of a prominent suture knot/button device medially along the first metatarsal.

Claims

1. A winged looped plate device comprising:

an at least semi-tubular plate body with a convex outer surface and concave inner surface;

at least one buttress wing extending perpendicularly from a longitudinal axis of the plate body, continuing the at least semi-tubular shape of the plate body; and

at least one dorsal loop disposed on the convex outer surface of the plate body for threading of cerclage material through the dorsal loop and tied around the device and a bone such that tension applied to the cerclage material secures the plate to the bone to prevent displacement of the plate body,

wherein the position of the dorsal loop is immobile with respect to the plate body, and

wherein the dorsal loop is aligned with the buttress wing along an axis orthogonal to the longitudinal axis of the plate body.

2. The winged looped plate device of claim 1, wherein the plate body comprises at least one hole for ingrowth of tissue.

3. The winged looped plate device of claim 1, wherein the at least one buttress wing comprises at least one hole for ingrowth of tissue.

4. The winged looped plate device of claim 1, wherein the plate body comprises at least one opening for a set screw.

5. The winged looped plate device of claim 1, wherein the at least one buttress wing comprises at least one opening for a set screw.

6. The winged looped plate device of claim 1, wherein the at least one dorsal loop is disposed on the convex outer surface of the plate body at a point where the buttress wing and plate body intersect so that tension is applied evenly when cerclage material is used to secure the plate body to the bone to prevent displacement of the plate body.

7. A method of correcting bone deformities using the winged looped plate device of claim 1, comprising the steps of:

a. locating an unstable bone and a stable bone near the unstable bone

b. drilling a hole through the unstable bone;

c. placing the winged looped plate against the stable bone;

d. passing cerclage material through the dorsal loop of the winged looped plate on the stable bone;

e. tying the cerclage material around the winged looped plate and stable bone in a cerclage fashion;

f. passing free ends of the cerclage material through a drill hole in the unstable bone;

g. applying tension to the cerclage material as the angular bone deformity is reduced;

h. securing the cerclage material into the unstable bone by inserting a tenodesis screw into the drill hole which contains the free ends of the cerclage material under tension.

8. A method of correcting bone deformities such as metatarsus primus adductus using the winged looped plate device of claim 1, comprising the steps of:

a. making a medial incision along a first metatarsal;

b. drilling a hole through the first metatarsal;

c. making a dorsal incision over a second metatarsal;

d. creating a tunnel through soft tissue between a first and second metatarsal;

e. the cerclage material entering the medial incision, passing through the soft tissue tunnel from medial to lateral and disposed through the dorsal incision;

f. threading the cerclage material through the dorsal loop of the Winged Looped Plate,

g. placing the winged looped plate against a lateral cortex of the second metatarsal;

h. tying the cerclage material around the second metatarsal and winged looped plate in a cerclage fashion and tightening the cerclage material;

i. passing free ends of the cerclage material back through the soft tissue tunnel from lateral to medial and pulling the free ends of the cerclage material through the hole in the first metatarsal;

j. applying tension to the cerclage material while reducing the angular deformity between the first and second metatarsal; and

k. inserting a tenodesis screw medially in the hole of the first metatarsal fixating the cerclage material to the first metatarsal under desired tension.

9. The method of claim 8, wherein the free ends of the cerclage material are pulled through a second drill hole in the first metatarsal and secured with a second tenodesis screw for additional cerclage material tension and for stabilization.

10. The method of claim 8, wherein a setscrew is inserted through a single hole in the dorsal wing of the plate, and inserted only through the dorsal cortex of the metatarsal.

11. The winged looped plate device of claim 1, further comprising a length of cerclage material.

12. A device for correcting angular deformity between first and second metatarsals of a human foot, the device comprising:

an at least semi-tubular plate body with a convex outer surface and concave inner surface;

at least one buttress wing extending perpendicularly from a longitudinal axis of the plate body, continuing the at least semi-tubular shape of the plate body,

wherein the plate body is configured to receive the second metatarsal therein, such that the concave inner surface abuts a lateral surface of the second metatarsal, and the at least one buttress wing extends over and abuts an upper or lower surface of the second metatarsal towards the first metatarsal,

at least one dorsal loop disposed on the convex outer surface of the plate body, the dorsal loop aligned with the buttress wing along an axis orthogonal to the longitudinal axis of the plate

wherein the dorsal loop is configured to receive cerclage material therethrough extending in a direction orthogonal to the longitudinal axis of the plate body, over the buttress wing, and towards the first metatarsal, such that coupling the cerclage material to the first metatarsal and tightening the cerclage material secures the plate to the second metatarsal and moves the first and second metatarsals towards one another with the cerclage material in contact with the buttress wing.

13. The device of claim 12, comprising two buttress wings extending from opposite sides of the plate body, each of the buttress wings continuing the at least semi-tubular shape of the plate body.

14. The device of claim 12, wherein the position of the dorsal loop is fixed with respect to the plate body.

15. The device of claim 12, wherein the dorsal loop is disposed in a central portion between first and second lateral portions of the plate body.

16. The device of claim 12, further comprising a length of cerclage material.

17. A bone stabilization device comprising:

an elongated plate body comprising;

a first surface facing in a first direction configured to face the bone;

a second surface facing in a second direction;

distal and proximal ends aligned along a longitudinal axis of the plate body; and

first and second lateral portions extending between the distal and proximal ends;

a buttress wing extending from the first lateral portion at least partially along the first direction;

a dorsal loop disposed on the second surface of the plate body, the dorsal loop disposed in a central portion between the first and second lateral portions and aligned with the buttress wing along an axis orthogonal to the longitudinal axis of the plate body,

wherein the dorsal loop extends along the longitudinal axis of the plate body, defining an aperture configured to receive cerclage material therethrough extending in a direction orthogonal to the longitudinal axis of the plate body.

18. The bone stabilization device of claim 17, wherein the plate is semi-tubular.

19. The bone stabilization device of claim 18, wherein the first surface is concave.

20. The bone stabilization device of claim 18, wherein the second surface is convex.

21. The bone stabilization device of claim 18, wherein the buttress wing extends curvature of the semi-tubular plate.

22. The bone stabilization device of claim 18, wherein a curvature of the semi-tubular plate is configured to receive a second metatarsal bone of human foot therein.

23. The bone stabilization device of claim 17, further comprising at least one hole on the plate body.

24. The bone stabilization device of claim 17, further comprising a length of cerclage material.

25. A bone stabilization kit comprising:

the bone stabilization device of claim 17;

a length of cerclage material;

a plurality of tenodesis screws; and

a suture-passing instrument.

26. The bone stabilization kit of claim 25, wherein the cerclage material comprises at least one of:

suture tape, fibertape, or wire.