US-20260123967-A1 - ORTHOPEDIC NAIL SYSTEM

US20260123967A1US 20260123967 A1US20260123967 A1US 20260123967A1US-20260123967-A1

Abstract

Embodiments are directed to an orthopedic nail that includes a collar having a sidewall defining a first opening extending from the first end to the second end along a first axis of the collar, a second opening configured to engage with an orthopedic fastener, first engagement features positioned at the first end of the first opening, and second engagement features positioned at a second end of the first opening. The orthopedic nail can include a shaft defining a third opening positioned adjacent to the first end of the shaft and configured to allow the orthopedic fastener to pass through the shaft, and third engagement features positioned between the third opening and a second end of the shaft. The third engagement features can be configured to rotationally couple to the second engagement features. The orthopedic nail can include a locking mechanism that is configured to couple to the engagement features.

Inventors

Omer Mei-Dan
Jacob Segil

Assignees

MDS II LLC

Dates

Publication Date: 20260507
Application Date: 20251230

Claims (20)

1 . An orthopedic nail, comprising: a collar comprising a sidewall extending from a first end to a second end and defining: a first opening extending from the first end to the second end along a first axis of the collar; a second opening configured to engage with an orthopedic fastener; first engagement features positioned at the first end of the first opening; and second engagement features positioned at a second end of the first opening; a shaft extending from a first end to a second end and defining: a third opening positioned adjacent to the first end of the shaft and configured to allow the orthopedic fastener to pass through the shaft; and third engagement features positioned between the third opening and a second end of the shaft, and configured to rotationally couple to the second engagement features, wherein when the third engagement features are coupled to the second engagement features the first end of the shaft is positioned in the first opening of the collar and the third opening is aligned with the second opening; and a locking mechanism configured to: couple to the first engagement features; in a first state prevent movement of the collar with respect to the shaft; and in a second state allow movement of the collar with respect to the shaft.
2 . The orthopedic nail of claim 1 , wherein: the collar is configured to be positioned proximal to a hip joint when the orthopedic nail is positioned within a femur; and the first axis of the collar is configured to extend along a length of the femur when the orthopedic nail is positioned within the femur.
3 . The orthopedic nail of claim 1 , wherein: the locking mechanism comprises a threaded fastener that is configured to rotate about the first axis; rotation of the locking mechanism in a first direction cause the locking mechanism to contact the shaft and rigidly fix the collar with respect to the shaft; and rotation of the locking mechanism in a second direction caused the locking mechanism to disengage from the shaft and allow movement of the collar with respect to the shaft.
4 . The orthopedic nail of claim 1 , wherein when the locking mechanism is in the second state, the third opening is configured to allow rotation of the collar with respect to the shaft when an orthopedic fastener extends through second and third openings.
5 . The orthopedic nail of claim 4 , wherein: the second opening is configured to rigidly couple the collar to a first bone segment when an orthopedic fastener is engaged with the first opening; and the shaft comprises a fourth opening configured to rigidly couple the shaft to a second bone segment when an orthopedic fastener is engaged with the fourth opening.
6 . The orthopedic nail of claim 4 , wherein when the locking mechanism is in the second state, the third opening is configured to allow translation movement between the collar and the shaft to change a length of the orthopedic nail.
7 . The orthopedic nail of claim 1 , wherein: the second engagement features comprise first threaded features positioned on an inner surface of the sidewall; and the third engagement features comprising second threaded features positioned on an outer surface of the shaft.
8 . The orthopedic nail of claim 1 , wherein the shaft comprises a curve along at least a portion of a length dimension.
9 . An orthopedic fixation device, comprising: a collar extending along an axis from a fist end to a second end and defining; first engagement features positioned at the first end; second engagement features positioned at the second end; and a first opening extending through a side of the collar and configured to allow an orthopedic fastener to extend through the collar; a shaft extending from a first end to a second end and defining; third engagement features configured engage with the second engagement features to couple the shaft to the collar and allow the shaft to rotate with respect to the collar; and a second opening positioned proximate to the first end and configured to align with the first opening and allow the orthopedic fastener to extend through the shaft, when the shaft is coupled to the collar; and a locking mechanism configured to engage with the first engagement features and the shaft to selectively prevent rotation of the collar with respect to the shaft.
10 . The orthopedic fixation device of claim 9 , wherein: the first opening is configured to engage with a first orthopedic fastener to rigidly couple the collar to a first bone segment; and the second opening is configured to allow the first orthopedic fastener to extend through the shaft and is configured to allow the shaft to rotate with respect to the collar when the orthopedic fastener is positioned within the second opening.
11 . The orthopedic fixation device of claim 10 , wherein the shaft defines a third opening configured to engage with a second orthopedic fastener to rigidly couple the shaft to a second bone segment.
12 . The orthopedic fixation device of claim 9 , wherein: the collar is further configured to be translated with respect to the shaft to change a length of the orthopedic fixation device; and the locking mechanism is configured to selectively prevent translation of the collar with respect to the shaft to fix the length of the orthopedic fixation device.
13 . The orthopedic fixation device of claim 9 , wherein: the locking mechanism comprises a threaded faster that engages with the first engagement features; and the locking mechanism is configured to rotate between a first state and a second state with respect to the collar.
14 . The orthopedic fixation device of claim 13 , wherein: in the first state the locking mechanism is configured to allow the collar to rotate and translate with respect to the shaft; and in the second state the locking mechanism is configured to prevent movement of the collar with respect to the shaft.
15 . The orthopedic fixation device of claim 9 , wherein the first end of the shaft is configured to be positioned within the collar when the shaft is coupled to the collar.
16 . An orthopedic fixation system comprising: a nail comprising: a collar defining: first engagement features; second engagement features; and a first opening configured to couple with an orthopedic screw; a shaft configured to couple with the collar and rotate with respect to the collar, the shaft defining: third engagement features configured to couple to the first engagement features and allow the shaft to rotate with respect to the collar; a second opening that aligns with the first opening when the shaft is coupled to the collar; and a lock that is configured to selectively fix the collar with respect to the shaft; and an alignment tool comprising: a first portion that couples to the first end of the collar the first portion configured to align an orthopedic fastening tool with the lock.
17 . The orthopedic fixation system of claim 16 , wherein: rotation of the lock in a first direction cause the lock to prevent rotation of the collar with respect to the shaft; and rotation of the lock in a second directions allows rotation of the collar with respect to the shaft.
18 . The orthopedic fixation system of claim 17 , wherein the first portion comprises an opening that aligns the orthopedic fastener with the lock.
19 . The orthopedic fixation system of claim 16 , further comprising a gauge that indicates a rotational orientation of the collar with respect to the shaft.
20 . The orthopedic fixation system of claim 19 , wherein the gauge is mounted on the alignment tool.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application is a continuation of U.S. patent application Ser. No. 18/390,593 filed Dec. 20, 2023, and titled “Orthopedic Nail System” which is a continuation in part of U.S. patent application Ser. No. 18/116,519 filed on Mar. 2, 2023, and titled “Orthopedic Nail System” which is a nonprovisional patent application of and claims the benefit under 35 U.S.C. § 119(e) of U.S. Provisional Patent Application No. 63/316,109, filed Mar. 3, 2022, and titled “Orthopedic Nail System”, the contents of which are incorporated herein by reference in their entirety. FIELD The described embodiments relate generally to medical devices for treating orthopedic fractures including tooling which allows for rational adjustment. More particularly, the present embodiments relate to an orthopedic device for treating long bone fractures including femoral, tibia and humerus fractures. BACKGROUND Large bone fractures, such as femur fractures, typically need to be treated quickly to stabilize the fractured bone and prevent further injury. In some cases, a femur facture or other fracture is treated using intramedullary nailing to align and stabilize the broken bone. A femoral nail is placed in the center of the femur and screws are used to attach the bone to the femoral nail, which stabilizes the bone while it heals. Misalignment of broken femur sections can occur during an intermedullary nailing procedure or other procedures (e.g., hip replacement, knee replacement, and so on), which may create complications for the patient. For example, misalignment of sections of the femur can result in accelerated joint wear, arthritis, increased muscle strain, and/or other issues. These types of complications may not be noticed until after the femoral fracture has healed making them difficult to correct. SUMMARY Embodiments are directed to an orthopedic nail that includes a collar having a sidewall extending from a first end to a second end and defining. The sidewall can defined a first opening extending from the first end to the second end along a first axis of the collar, a second opening configured to engage with an orthopedic fastener, first engagement features positioned at the first end of the first opening, and second engagement features positioned at a second end of the first opening. The orthopedic nail can include a shaft extending from a first end to a second end. The shaft defining a third opening positioned adjacent to the first end of the shaft and configured to allow the orthopedic fastener to pass through the shaft, and third engagement features positioned between the third opening and a second end of the shaft. The third engagement features can be configured to rotationally couple to the second engagement features. When the third engagement features are coupled to the second engagement features the first end of the shaft is positioned in the first opening of the collar and the third opening is aligned with the second opening. The orthopedic nail can include a locking mechanism that is configured to couple to the engagement features. In a first state, the locking mechanism can prevent movement of the collar with respect to the shaft, and in a second state allow movement of the collar with respect to the shaft. Embodiments are directed to an orthopedic fixation device that includes a collar extending along an axis from a fist end to a second end. The collar can define first engagement features positioned at the first end, second engagement features positioned at the second end, and a first opening extending through a side of the collar and configured to allow an orthopedic fastener to extend through the collar. The orthopedic fixation device can include a shaft extending from a first end to a second end and defining third engagement features configured engage with the second engagement features to couple the shaft to the collar and allow the shaft to rotate with respect to the collar. The shaft can also define a second opening positioned proximate to the first end and configured to align with the first opening and allow the orthopedic fastener to extend through the shaft, when the shaft is coupled to the collar. The orthopedic fixation device can include a locking mechanism configured to engage with the first engagement features and the shaft to selectively prevent rotation of the collar with respect to the shaft. Embodiments include an orthopedic fixation system that includes a nail and an alignment tool. The nail can include a collar defining first engagement features, second engagement features, and a first opening configured to couple with an orthopedic screw. The nail can include a shaft configured to couple with the collar and rotate with respect to the collar. The shaft can define third engagement features configured to couple to the first engagement features and allow the shaft to rotate with respect to the collar and second opening that aligns with the first opening when the shaft