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EP-4401656-B1 - VARIABLE FIXATION BONE PLATES

EP4401656B1EP 4401656 B1EP4401656 B1EP 4401656B1EP-4401656-B1

Inventors

  • PAPANNAGARI, Ramprasad
  • RITCHEY, NICHOLAS S.
  • TORNETTA, III, Paul
  • RICCI, WILLIAM M.
  • FIROOZABADI, Reza
  • MIR, HASSAN

Dates

Publication Date
20260506
Application Date
20220915

Claims (14)

  1. A pelvic bone plate (100), comprising: a brim segment (101) coupled to a quadrilateral surface (QLS) segment (102) via at least one bridge (103), wherein the brim segment is configured to be affixed to a portion of a pelvis of a patient and the QLS segment is configured to be arranged directly adjacent to a QLS of the pelvis; and a plurality of slots (110, 111, 112) arranged on the brim segment and on the QLS segment, at least a portion of the plurality of slots configured to receive a fastener to affix the bone plate to the pelvis, the plurality of slots comprising at least one elongated slot (112) configured to receive the fastener to non-rigidly affix the pelvic bone plate to the pelvis to facilitate adjustment of the bone plate in an adjustment direction during an implantation procedure, wherein the plurality of slots comprises at least one elongated slot arranged on the brim segment and at least one elongated slot arranged on the QLS segment, characterized in that each elongated slot comprises a short dimension configured to prevent movement of the pelvic bone plate in a short direction when a fastener is arranged within the at least one elongated slot, and a long dimension configured to allow movement of the pelvic bone plate in the adjustment direction when the pelvic bone plate is non-rigidly affixed to the pelvis.
  2. The pelvic bone plate of claim 1, wherein the adjustment direction is one of a medial/lateral direction or a superior/inferior direction.
  3. The pelvic bone plate of claim 1 or 2, wherein the at least one elongated slot on the brim segment has the adjustment direction of medial/lateral and the at least one elongated slot on the QLS segment has the adjustment direction of superior/inferior.
  4. The pelvic bone plate of any of claims 1-3, wherein the pelvic bone plate is a suprapectineal bone plate wherein the brim segment is configured to be affixed on the pelvic brim.
  5. The pelvic bone plate of any of claims 1-4, wherein the pelvic bone plate is an infrapectineal bone plate wherein the brim segment is configured to be affixed to the QLS below the pelvic brim.
  6. The pelvic bone plate of any of claims 1-5, wherein at least a portion of the plurality of slots are arranged on the QLS segment.
  7. The pelvic bone plate of claim 6, wherein the plurality of slots comprises at least one elongated slot arranged on the QLS segment.
  8. The pelvic bone plate of any of claims 1-7, wherein the plurality of slots comprises at least one non-locking slot (110) and at least one locking slot (111).
  9. The pelvic bone plate of any of claims 1-8, the plurality of slots arranged on the brim segment in a brim slot pattern comprising alternating locking slots and non-locking slots arranged along a longitudinal length of the brim segment.
  10. The pelvic bone plate of claim 9, the brim slot pattern comprising the at least one elongated slot (112) arranged between a locking slot (111) and a non-locking slot (110) of the brim slot pattern.
  11. The pelvic bone plate of any of claims 1-10, the plurality of slots comprising at least one set of elongated slots configured to facilitate movement in one adjustment direction.
  12. The pelvic bone plate of claim 11, the at least one set comprising one of a medial/lateral adjustment set or a superior/inferior adjustment set.
  13. The pelvic bone plate of any of claims 1-12, the at least one elongated slot comprising a plurality of slots arranged at a slot orientation angle.
  14. The pelvic bone plate of any of claims 1-13, the at least one elongated slot is configured to facilitate movement of about 1 mm to about 10 mm.

Description

This application claims the benefit of U.S. Provisional Patent Application Serial No. 63/245,036, filed September 16, 2021, and titled "Variable Fixation Bone Plates". TECHNICAL FIELD The present disclosure is directed to orthopedic implants, for instance, configured to be variably coupled to one or more patient bones, bone portions, bone fragments, and/or the like, and more specifically to bone plates for facilitating stabilization of fractures of the pelvis. BACKGROUND Bone fractures are often repaired by securing an orthopedic implant or device to one or more patient bone(s), bone portions, bone fragments, and/or the like (used interchangeably without the intent to limit). For example, treatment of acetabular fractures of the pelvis may include use of a bone plate to stabilize the bone to promote healing. However, minimal bone stock, limited anatomic access, and difficulty in obtaining stable internal fixation in the pelvis, particularly the quadrilateral surface, contribute to the surgical challenge of internal fixation using conventional bone plate devices. For example, the anatomical location of the quadrilateral plate is deep, and the bone is thin, surrounded by vital blood vessels and nerves, and is close to organs. Accordingly, coupling a bone plate to a patient's bone such as, for example, a pelvic brim and/or quadrilateral surface of a pelvis, introduces a number of challenges that need to be overcome. For example, designing, contouring, and/or bending a bone plate that approximates the contour of the pelvic anatomy can be challenging. Bone plates that are too thick can be difficult to bend. However, bone plates that are sufficiently flexible to facilitate easier bending, either pre-operative or inter-operative, may not provide adequate strength. Moreover, bending bone plates requires significant skill and is challenging to achieve a proper fit. To alleviate some of these concerns, some manufacturers provide large sets or kits of bone plates to provide surgeons with different bone plate sizes and shapes. However, this has its own disadvantages due to the large number of plates needed per set, which increases costs and complexity. In addition, conventional bone plates do not include a screw hole or slot pattern that allows for efficient and accurate adjustment of the implanted bone plate during an implantation procedure. US 2017/181784 A1 describes a general anatomic self-locking plate for medial acetabulum and the auxiliary apparatus of an anatomic self-locking plate for medial acetabulum. It is with this in mind that the present disclosure is provided. SUMMARY OF THE INVENTION The invention is as defined in and by the appended claims. Associated surgical methods are also described herein to aid understanding the invention. These methods do not form part of the claimed invention. SUMMARY OF THE DISCLOSURE Disclosed herein is an improved bone plate arranged and configured for use in bone fractures, including, without limitation, acetabular fractures or quadrilateral plate fractures of the pelvis. For example, in some examples, the bone plate may be in the form of a pelvic bone plate, including, for instance, a suprapectineal bone plate or an infrapectineal bone plate. In either event, the bone plate is designed and configured for inter-operative dynamic adjustment to facilitate an optimal fit of the bone plate adjacent to the pelvis. In use, the bone plate is arranged and configured to fit or be easily bent to fit, either pre-operatively or inter-operatively, to stabilize the patient's bone such as, for example, a patient's pelvis. In any preceding or subsequent example, the bone plate may include a brim segment coupled to a quadrilateral surface (QLS) segment. The brim segment may be arranged, contoured, and/or otherwise configured to be arranged directly adjacent to the pelvic brim. The QLS segment may be arranged, contoured, and/or otherwise configured to be arranged directly adjacent to the QLS of the pelvis. In any preceding or subsequent example, the brim segment may be arranged and configured to approximate the contours of at least a portion of the pelvic brim when implanted. In any preceding or subsequent example, the QLS segment may be arranged and configured to approximate the contours of at least a portion of the QLS of the pelvis when implanted. In any preceding or subsequent example, the QLS segment may have a substantially triangular shape formed of a plurality of sub-segments. In any preceding or subsequent example, a plurality of slots may be arranged on the brim segment and the QLS segment. Each of the plurality of slots may be configured to receive a fastener to affix the bone plate to the pelvis. In any preceding or subsequent example, the plurality of slots may include at least one of a non-locking slot, a locking slot, a variable-angle slot, and an elongated slot. In any preceding or subsequent example, the plurality of slots may include at least one non-locking slot and at le