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US-12616487-B2 - Minimally invasive surgery lapidus system

US12616487B2US 12616487 B2US12616487 B2US 12616487B2US-12616487-B2

Abstract

A system includes a cutting guide having a base body configured to be fixed to a first bone of a patient and a cutting slot block configured to provide a guide for cutting at least one of the first bone and a second bone of the patient. The cutting slot block is rotationally coupled to the base body. The cutting slot block is configured to rotate in a first rotational direction. The cutting guide comprises a distal portion and a proximal portion.

Inventors

  • Nathan Stone

Assignees

  • ACUMED LLC

Dates

Publication Date
20260505
Application Date
20240131

Claims (20)

  1. 1 . A system comprising: a cutting guide comprising: a base body configured to be fixed to a first bone of a patient; a cutting slot block configured to provide a guide for cutting at least one of the first bone and a second bone of the patient, the cutting slot block rotationally coupled to the base body, and the cutting slot block configured to rotate in a first rotational direction; and a rotation arm coupled to the cutting slot block and configured to rotate the cutting slot block relative to the base body, the rotation arm extending outward from an axis of rotation of the cutting slot block, and the rotation arm comprising: a blade configured to engage and disengage the rotation arm with and from the base body, and a plurality of notches configured to be engaged with the blade, wherein the cutting guide comprises a distal portion and a proximal portion.
  2. 2 . The system of claim 1 , wherein the first bone comprises a medial cuneiform bone, and wherein the second bone comprise a first metatarsal bone.
  3. 3 . The system of claim 1 , wherein the cutting guide further comprises a gauge block configured to indicate an angle of the cutting slot block.
  4. 4 . The system of claim 3 , wherein a difference between a maximum and a minimum of the angle of the cutting slot block is at least 15°.
  5. 5 . The system of claim 3 , wherein the base body comprises a first fixing block, wherein the first fixing block includes a first fixing mechanism for fixing the base body to the first bone of the patient.
  6. 6 . The system of claim 5 , wherein the first fixing mechanism comprises at least one of a clamp and a hole configured to receive a bone fastener.
  7. 7 . The system of claim 1 , wherein the cutting slot block comprises: a cutting slot guide body; and a slot formed in or on the cutting slot guide body.
  8. 8 . The system of claim 1 , wherein the rotation arm comprises a locking mechanism configured to lock an angle of the cutting slot block relative to the base body.
  9. 9 . The system of claim 1 , further comprising a reposition guide block removably coupled to the rotation arm, wherein the reposition guide block is configured to rotate the second bone of the patient.
  10. 10 . The system of claim 9 , wherein the reposition guide block is configured to rotate the second bone of the patient in the first rotational direction.
  11. 11 . The system of claim 9 , wherein the reposition guide block comprises: a second arm removably coupled to the rotation arm, wherein the second arm comprises a first end portion at the cutting guide and a second end portion opposite the first end portion; and a second fixing block disposed at the second end portion, wherein the second fixing block includes a second fixing mechanism for fixing the second fixing block to the second bone of the patient.
  12. 12 . The system of claim 11 , wherein the second fixing mechanism comprises at least one of a clamp and a hole configured to receive a bone fastener.
  13. 13 . The system of claim 11 , wherein the reposition guide block further comprises a compressor configured to move the second fixing block relative to the second arm between a front position and a rear position.
  14. 14 . The system of claim 13 , wherein the compressor comprises a threaded fastener and/or a driver-engagement recess.
  15. 15 . The system of claim 13 , wherein the compressor is disposed between the second arm and the second fixing block.
  16. 16 . The system of claim 9 , wherein the reposition guide block is configured to move relative to the rotation arm.
  17. 17 . The system of claim 1 , wherein the cutting slot block is disposed at the distal portion of the cutting guide.
  18. 18 . A system comprising: a cutting guide comprising: a base body configured to be fixed to a first bone of a patient; and a cutting slot block configured to provide a guide for cutting at least one of the first bone and a second bone of the patient, the cutting slot block rotationally coupled to the base body, and the cutting slot block configured to rotate in a first rotational direction, wherein the cutting guide comprises a distal portion and a proximal portion; and a reposition guide block removably coupled to a rotation arm of the cutting guide, the reposition guide block configured to rotate the second bone of the patient, and the reposition guide block comprising: a second arm removably coupled to the rotation arm, the second arm comprising a first end portion at the cutting guide and a second end portion opposite the first end portion, a second fixing block disposed at the second end portion, the second fixing block including a second fixing mechanism for fixing the second fixing block to the second bone of the patient, and a compressor configured to move the second fixing block relative to the second arm between a front position and a rear position.
  19. 19 . The system of claim 18 , wherein the first bone comprises a medial cuneiform bone, and wherein the second bone comprise a first metatarsal bone.
  20. 20 . The system of claim 18 , wherein the cutting guide further comprises a gauge block configured to indicate an angle of the cutting slot block.

Description

PRIORITY CLAIM This application claims priority to U.S. Provisional Patent Application No. 63/442,672 filed on Feb. 1, 2023, the entire contents of which are hereby incorporated by reference and relied upon. BACKGROUND Lapidus procedure refers to a surgical procedure for the treatment of a bunion deformity. A bunion is a bony bump that is formed on the side of the big toe joint, which may cause a foot deformity. Lapidus procedure involves the correction of the foot structure by repositioning the poorly aligned first metatarsal bone to its proper position. Lapidus procedures traditionally require full exposure of the first metatarsophalangeal (TMT) joint. This means that traditionally an incision having a length of at least 3.5 cm is needed to complete the Lapidus procedure, which may leave a big scar, require more healing time, and have a risk of infection. SUMMARY The present disclosure provides new and innovative systems and methods for minimally invasive Lapidus surgery. In some examples, a system according to the present disclosure may include a cutting guide having a base body configured to be fixed to a first bone of a patient and a cutting slot block configured to provide a guide for cutting at least one of the first bone and a second bone of the patient. The cutting slot block may be rotationally coupled to the base body. The cutting slot block may be configured to rotate in a first rotational direction. In some examples, a method according to the present disclosure may include fixing the base body of the cutting guide to the first bone of the patient, positioning the cutting slot block in a first angle, cutting one of the first bone and the second bone by inserting, through a slot of the cutting slot block in the first angle, a bone cutting device into an incision between the first bone and the second bone, rotating the cutting slot block to a second angle different from the first angle, and cutting one of the first bone and the second bone by inserting, through the slot of the cutting slot block in the second angle, the bone cutting device into the incision. Additional features and advantages of the disclosed systems are described in, and will be apparent from, the following Detailed Description and the Figures. BRIEF DESCRIPTION OF THE FIGURES FIG. 1 is a diagram of a perspective view of a cutting guide according to an example embodiment of the present disclosure. FIG. 2 is a diagram of a top view of the cutting guide of FIG. 1. FIG. 3 is a diagram of a perspective view of a first reposition guide block according to an example embodiment of the present disclosure. FIG. 4 is a diagram of a side view of the first reposition guide block of FIG. 3. FIG. 5 is a diagram of a top view of the first reposition guide block of FIG. 3. FIG. 6 is a diagram of the first reposition guide block of FIG. 3 applied to human bones. FIG. 7 is a diagram of both of the cutting guide of FIG. 1 and the first reposition guide block of FIG. 3 applied to human bones. FIG. 8 is a diagram of a perspective view of a second reposition guide block applied to a cutting guide according to an example embodiment of the present disclosure. FIG. 9 is a diagram of a top view of the second reposition guide block and cutting guide of FIG. 8. FIG. 10 is a diagram of a side view of the second reposition guide block and cutting guide of FIG. 8. FIG. 11 is a diagram of the second reposition guide block and cutting guide of FIG. 8 applied to human bones. FIG. 12 is a diagram of a top view of an anatomical structure of a foot of a patient with bunion. FIG. 13 is a diagram of a top view of an anatomical structure of a foot of a patient with bunion. FIG. 14 is a diagram of a front left perspective view of a third reposition guide block applied to a cutting guide according to an example embodiment of the present disclosure. FIG. 15 is a diagram of a front right perspective view of the third reposition guide block and cutting guide of FIG. 14. FIG. 16 is a diagram of a perspective view of a third fixing block of the third reposition guide block of FIG. 14. FIG. 17 is a diagram of a side view of a third fixing block of the third reposition guide block of FIG. 14. DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS The present disclosure is directed to systems and methods for minimally invasive Lapidus surgery. As discussed above, the conventional Lapidus procedure may require an incision having a length of at least 3.5 cm, which may have various issues such as a big scar, more healing time, and infection risk. Moreover, conventional devices for the Lapidus procedure may only allow a single (sagittal) plane correction, requiring the surgeon to perform the correction in other planes (e.g., frontal and transverse planes) manually, which may necessitate a bigger incision size, and reduce the accuracy and repeatability of the procedure. Aspects of the present disclosure may address the above-discussed issue in the conventional Lapidus procedure. For example, as