METHODS AND DEVICES FOR TREATING HALLUX VALGUS

• US 20100211071A1
• Filed: 02/13/2009
• Published: 08/19/2010
• Est. Priority Date: 02/13/2009
• Status: Active Grant

• Current Assignee: Tarsus Medical Incorporated (Integra LifeSciences Holdings Corporation)
• Original Assignee: Tarsus Medical Incorporated (Integra LifeSciences Holdings Corporation)
• Inventors: Baltzell, Joshua J., Lettmann, Jason W.
• Granted Patent: US 8,870,876 B2
• Time in Patent Office: Days
• US Class Current: 606/60
• CPC Class Codes: A61B 17/0401 Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811
• CPC Class Codes: A61B 17/68 Internal fixation devices , including fasteners and spinal fixators, even if a part thereof projects from the skin bone staples A61B17/0642
• CPC Class Codes: A61B 17/842 Flexible wires, bands or straps A61B17/72, A61B17/82, A61B17/86 take precedence
• CPC Class Codes: A61B 2017/0417 T-fasteners
• CPC Class Codes: A61B 2017/565 for surgical correction of axial deviation, e.g. hallux valgus or genu valgus
• CPC Class Codes: A61F 2/4225 for feet, e.g. toes

Abstract

The various embodiments disclosed herein relate to implantable devices for the treatment of hallux valgus. More specifically, the various embodiments include devices having dynamic tensioning components or heat shrinkable components configured to urge two metatarsals together to treat a bone deformity.

Claims

1. An implantable tensioning device comprising:

(a) a first anchor configured to be attachable to a first metatarsal bone;

(b) a dynamic tension component coupled to the first anchor, the dynamic tension component exhibiting elasticity; and

(c) a second anchor coupled to the dynamic tension component, the second anchor configured to be attachable to a second metatarsal bone,

wherein the dynamic tension component has a tensioned state and an untensioned state, wherein the dynamic tension component in the tensioned state is configured to urge the first and second anchors toward each other.

2. The device of claim 1, wherein the dynamic tension component is coupled to the first anchor via a first connection component and further is coupled to the second anchor via a second connection component.

3. The device of claim 1, wherein the body further comprises a housing, wherein the dynamic tension component is disposed within the housing.

4. The device of claim 1, wherein the dynamic tension component comprises an elastic material configured to urge the first and second anchors together.

5. The device of claim 1, wherein the dynamic tension component comprises a spring.

6. The device of claim 1, wherein the body further comprises at least one bioabsorbable component associated with the dynamic tension component, wherein the bioabsorbable component is configured to maintain the dynamic tension component in a tensioned state, and further wherein the bioabsorbable component is configured to dissolve after the device is positioned in a patient, whereby the dynamic tension component moves toward an untensioned state.

7. The device of claim 1, wherein the dynamic tension component further comprises a heat shrink material, wherein the heat shrink material is configured to shrink upon application of heat.

9. The device of claim 1, wherein a length of the dynamic tension component in the tensioned state is at least 10% greater than a length of the dynamic tension component in the untensioned state.

10. The device of claim 1, wherein at least one of the first and second anchors is chosen from the group consisting of:

a sleeve configured to be disposed around a metatarsal;

a filament configured to be disposed around a metatarsal;

an anchor body having a length perpendicular to a length of the body, wherein the anchor body is configured to be deployed against a first side of a metatarsal, wherein a portion of the dynamic tension component is disposed through the metatarsal and further is coupled to the body on a second side of the metatarsal that is opposite the first side;

an anchor body having a length perpendicular to a length of the body, wherein the anchor body is configured to be disposed within an intramedullary canal of a metatarsal; and

an anchor body fixedly positioned in a top portion of a metatarsal.

11. A system for treating a bone deformity, the system comprising:

(a) the tensioning device of claim 1; and

(b) a second tensioning device comprising;

(i) a third anchor configured to be attachable to the first metatarsal bone;

(ii) a second dynamic tension component coupled to the third anchor, the second dynamic tension component exhibiting elasticity;

(iii) a fourth anchor coupled to the second dynamic tension component, the fourth anchor configured to be attachable to the second metatarsal bone,

wherein the second dynamic tension component has a tensioned state and an untensioned state, the tensioned state comprising the dynamic tension component urging the third and fourth anchors toward each other, and

further wherein the tensioning device of claim 1 is positioned in relation to the second tensioning device such that the device of claim 1 and the second device form substantially an “

x”

pattern when viewed from above.

8. The device of claim 8, wherein the heat causes the dynamic tension component to transition toward the tensioned state.

12. A method of treating a bone deformity comprising:

securing a first anchor to a first metatarsal bone;

securing a second anchor to a second metatarsal bone;

securing a dynamic tension component to the first and second anchors such that the dynamic tension component is in a tensioned state, wherein the dynamic tension component exhibits elasticity; and

urging the first and second metatarsal bones toward each other with the dynamic tension component, wherein the dynamic tension component moves toward an untensioned state as the first and second metatarsal bones move toward each other.

13. The method of claim 12, wherein the urging the first and second metatarsal bones toward each other with the dynamic tension component further comprises:

urging the first and second metatarsal bones toward each other a first distance during a first time interval; and

urging the first and second metatarsal bones toward each other a second distance during a second later time interval.

14. The method of claim 13, wherein the urging the first and second metatarsal bones toward each other the first distance further comprises allowing a first bioabsorbable component opereably coupled to the dynamic tension component to degrade, and further wherein the urging the first and second metatarsal bones toward each other the second distance further comprises allowing a second bioabsorbable component operably coupled to the dynamic tension component to degrade.

15. The method of claim 12, wherein the dynamic tension component further comprises a heat shrink material, wherein the urging the first and second metatarsal bones toward each other further comprises applying heat to the dynamic tension component.

16. The method of claim 12, wherein at least one of the first and second anchors is chosen from the group consisting of:

a sleeve configured to be disposed around a metatarsal bone;

a filament configured to be disposed around a metatarsal bone;

an anchor body having a length perpendicular to a length of the body, wherein the anchor body is configured to be deployed against a first side of a metatarsal bone, wherein a portion of the dynamic tension component is disposed through the metatarsal bone and further is coupled to the body on a second side of the metatarsal bone that is opposite the first side;

an anchor body having a length perpendicular to a length of the body, wherein the anchor body is configured to be disposed within an intramedullary canal of a metatarsal bone; and

an anchor body fixedly positioned in a top portion of a metatarsal bone.

17. The method of claim 12, wherein a length of the dynamic tension component changes at least 10% as the dynamic tension component moves toward the untensioned state.

18. A method of treating a bone deformity comprising:

providing an implant device comprising;

(i) a first anchor;

(ii) a dynamic tension component coupled to the first anchor, the dynamic tension component comprising heat shrink material; and

(iii) a second anchor coupled to the dynamic tension component;

securing the first anchor to a first metatarsal bone;

securing the second anchor to a second metatarsal bone; and

applying heat to the dynamic tension component, whereby the dynamic tension component shrinks into a first tensioned state;

urging the first and second metatarsal bones toward each other with the dynamic tension component, wherein the dynamic tension component moves toward a first untensioned state as the first and second metatarsal bones move toward each other.

19. The method of claim 18, further comprising:

applying heat to the dynamic tension component when the dynamic tension component reaches the first untensioned state, whereby the dynamic tension component shrinks into a second tensioned state; and

urging the first and second metatarsal bones toward each other with the dynamic tension component, wherein the dynamic tension component moves toward a second untensioned state as the first and second metatarsal bones move toward each other.

20. The method of claim 18, wherein at least one of the first and second anchors is chosen from the group consisting of:

a sleeve configured to be disposed around a metatarsal bone;

a filament configured to be disposed around a metatarsal bone;

an anchor body having a length perpendicular to a length of the body, wherein the anchor body is configured to be deployed against a first side of a metatarsal bone, wherein a portion of the dynamic tension component is disposed through the metatarsal bone and further is coupled to the body on a second side of the metatarsal bone that is opposite the first side;

an anchor body having a length perpendicular to a length of the body, wherein the anchor body is configured to be disposed within an intramedullary canal of a metatarsal bone; and

an anchor body fixedly positioned in a top portion of a metatarsal bone.