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NXT-5PROV NXT-5, 6, 7, 8 |
Referring now to FIG. 3A, the intramedullary nail 100 or intramedullary nail system 200 facilitates retrograde deployment of an IMDF for patients who already have an arthroplasty implant. Suppose a patient has suffered a fracture 340 near the distal metaphysis of the femur 102. Patients who have received an implant in an arthroplasty procedure may have a greater risk of periprosthetic fractures (e.g., fracture 340). |
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NXT-5PROV NXT-5, 6, 7, 8 |
Suppose further that a surgeon has decided to use the intramedullary nail 100 or intramedullary nail system 200 for fixation of the femur 102. The surgeon may reduce the parts of the femur 102 around the fracture 340 using either an open reduction or a closed reduction. Next, a surgeon may create an entry point posterior to the medial and lateral condyles of the femur 102, within the intercondylar fossa. Advantageously, the entry point is posterior to an arthroplasty implant of the patient. Next, a surgeon may ream an opening to connect the entry point through the soft tissue to the intramedullary cavity. In one embodiment, the reamed opening may connect to the intramedullary cavity at about the same angle as the first bend 118 in relation to the longitudinal axis 114. |
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NXT-5PROV NXT-5, 6, 7, 8 |
Following reaming, a surgeon may use the inserter 300a to deploy the intramedullary nail 100 or intramedullary nail system 200 by passing the nail through the entry point and reamed opening and into the intramedullary cavity. The proximal end 106 of the intramedullary nail may fit tight as it passes through the reamed opening and into the intramedullary cavity. However, once the nail slides more distally into the intramedullary cavity the section 116 reaches the reamed opening and intramedullary cavity at which point pressure and stress on the nail being deployed is relieved and the nail fits snuggly within the femur 102 with the section 116 positioned as illustrated in FIG 3A. |
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NXT-5PROV NXT-5, 6, 7, 8 |
In certain instances, the fracture 340 displacement and/or angulation may be so great that femur fragments can be moved a great degree relative to each other. In such instances, the pressure on the intramedullary nail during deployment is minimal since the fragments can be positioned during intramedullary nail deployment and reduced to proper alignment, position, and angulation after the deployment. |
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NXT-5PROV NXT-5, 6, 7, 8 |
Figure 3C is a perspective view of an inserter 300b and the intramedullary nail system of FIG. 2A, according to one embodiment. The inserter 300b is disconnected from the intramedullary nail of FIG. 1A and/or the intramedullary nail system of FIG. 2A. The inserter 300b may include a handle 310, a driver 320, and a guide 330 similar to those discussed in relation to inserter 300a. |
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NXT-5PROV NXT-5, 6, 7, 8 |
The inserter 300b differs from inserter 300a in that the distal end 322 of inserter 300b, in the illustrated embodiment, includes an offset section 116. In one embodiment, the distal end 104 of the intramedullary nail 202 includes a coupling configured to engage the intramedullary nail 202. In the illustrated embodiment, the intramedullary nail 202 is straight and does not include an offset section 116. |
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NXT-5PROV NXT-5, 6, 7, 8 |
The intramedullary nail 100 or intramedullary nail system 200 may be used as primary fixation or secondary/supplemental fixation together with other fixation devices/techniques for fixation regardless of a position of a fracture (i.e., mid, distal, proximal sections of a long bone). Similarly, the intramedullary nail 100 or intramedullary nail system 200 can be used in relation to any type of fracture on any type of long bone, such as a femur, humerus, and/or tibia and from either end (antegrade or retrograde). In addition, the intramedullary nail 100 or intramedullary nail system 200 may be used for deployment of an antegrade intramedullary nail or a retrograde intramedullary nail. |
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NXT-5PROV NXT-5, 6, 7, 8 |
wherein the first connector and second connector are each configured to engage an extender. |
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NXT-5PROV NXT-5, 6, 7, 8 |
wherein the bone plate is configured to be flexible such that the bone plate provides insufficient fixation without the intramedullary nail. |
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NXT-5PROV NXT-5, 6, 7, 8 |
a bone plate configured to contact a surface of a long bone shaft, the bone plate comprising one or more fastener openings; and |
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NXT-5PROV NXT-5, 6, 7, 8 |
an intramedullary nail comprising a proximal end, a shaft, and a distal end, the intramedullary nail configured for deployment from the distal end of a long bone; |
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NXT-5PROV NXT-5, 6, 7, 8 |
5.A fixation system for a long bone of a patient, the fixation system comprising: |
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NXT-5PROV NXT-5, 6, 7, 8 |
As used herein, "implant" refers to a medical device manufactured to replace a missing biological structure, support a damaged biological structure, or enhance an existing biological structure. Medical implants are man-made devices. The surface of implants that contact the body may be made of, or include a biomedical material such as titanium, stainless steel, carbon fiber, another metallic alloy, silicone, or apatite, or any combination of these depending on what is the most functional. In some cases implants contain electronics, e.g. artificial pacemaker and cochlear implants. Some implants are bioactive, such as subcutaneous drug delivery devices in the form of implantable pills or drug-eluting stents. Orthopedic implants may be used to alleviate issues with bones and/or joints of a patient's body. Orthopedic implants are used to treat bone fractures, osteoarthritis, scoliosis, spinal stenosis, and chronic pain. Examples of orthopedic implants include, but are not limited to, a wide variety of pins, rods, screws, anchors, and plates used to anchor fractured bones while the bones heal or fuse together. (Search "implant (medicine)" on Wikipedia.com May 26, 2021. CC-BY-SA 3.0 Modified. Accessed June 30, 2021.) |
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NXT-5PROV NXT-5, 6, 7, 8 |
As used herein, a “deploy” or "deployment" refers to an act, action, process, system, method, means, or apparatus for inserting an implant or prosthesis into a part, body part, and/or patient. “Deploy” or "deployment" can also refer to an act, action, process, system, method, means, or apparatus for placing something into therapeutic use. A device, system, component, medication, drug, compound, or nutrient may be deployed by a human operator, a mechanical device, an automated system, a computer system or program, a robotic system, or the like. |
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NXT-5PROV NXT-5, 6, 7, 8 |
As used herein, “adapter” refers to a device, component, system, assembly, or structure, that is organized, configured, designed, arranged, or engineered to convert or convey attributes, features, or functions of one device, component, or structure, for use with an otherwise incompatible device, component, system, assembly, or structure. (Search "adapter" on Wikipedia.com May 13, 2021. CC-BY-SA 3.0 Modified. Accessed July 27, 2021.) An adapter may include one or more modifiers that identify one or more particular functions, attributes, advantages, uses, purposes, or operations and/or particular structures relating to the adapter. Examples of such modifiers applied to a feature, include, but are not limited to, "offset adapter," "accessibility adapter," "accommodation adapter," "detour adapter," "routing adapter," "rerouting adapter," and the like. |
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NXT-5PROV NXT-5, 6, 7, 8 |
As used herein, an “arm” refers to an elongated structure that extends from another structure such as a base or a body. In certain embodiments, an arm can be configured to support a load (including a tension, compression, shear, torsion, and/or bending load). In certain embodiments, an arm may comprise a generally planar structure. An arm can be a separate structure connected to, or integrated with, another structure. Based on how the arm connects to or extends from another structure, such as a base or body, the arm can resemble an arm of a human or animal in that the arm can be an appendage to another structure. An arm can be two-dimensional or three-dimensional and can have a variety of geometric shapes and/or cross-sectional shapes, including, but not limited to a rectangle, a square, or other polygon, as well as a circle, an ellipse, an ovoid, or other circular or semi-circular shape. An arm can be made from a variety of materials including, metal, plastic, ceramic, wood, fiberglass, or the like. One arm may be distinguished from another based on where the arm is positioned within a structure, component, or apparatus. |
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NXT-5PROV NXT-5, 6, 7, 8 |
As used herein, “periprosthetic” refers to a structure positioned in close relation to an implant. Periprosthetic can also be used as an adjective to describe a type of bone fracture. For example, a periprosthetic fracture is a fracture near or around an implant of prosthetic. (Search "periprosthetic" on Wikipedia.com Sept. 20, 2020. CC-BY-SA 3.0 Modified. Accessed July 26, 2021.) |
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NXT-5PROV NXT-5, 6, 7, 8 |
As used herein, a “long bone” refers to a bone of a patient having a length greater than a width of the bone. Long bone is one of five types of bones: long, short, flat, irregular and sesamoid. Long bones, especially the femur and tibia, can be subjected to most of the load during daily activities. Long bones grow primarily by elongation of the diaphysis, with an epiphysis at each end of the growing bone. The ends of epiphyses are covered with hyaline cartilage ("articular cartilage"). The longitudinal growth of long bones is a result of endochondral ossification at the epiphyseal plate. The long bone category type includes the femur, tibia, and fibula of the legs; the humerus, radius, and ulna of the arms; metacarpals and metatarsals of the hands and feet, the phalanges of the fingers and toes, and the clavicles or collar bones in humans or other patients. The outside of the long bone consists of a layer of connective tissue called the periosteum. Additionally, the outer shell of the long bone is compact bone, then a deeper layer of cancellous bone (spongy bone) which includes a medullary cavity that includes bone marrow. (Search "long bone" on Wikipedia.com May 14, 2021. CC-BY-SA 3.0 Modified. Accessed July 26, 2021.) |
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NXT-5PROV NXT-5, 6, 7, 8 |
In one embodiment, a body may include a housing or frame or framework for a larger system, component, structure, or device. A body may include a modifier that identifies a particular function, location, orientation, operation, and/or a particular structure relating to the body. Examples of such modifiers applied to a body, include, but are not limited to, "inferior body," "superior body," "lateral body," "medial body," and the like. |
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NXT-5PROV NXT-5, 6, 7, 8 |
As used herein, “coupling” or "coupler" refers to a mechanical device, component, or structure, that is organized, configured, designed, arranged, or engineered to connect the ends of adjacent parts or objects. In certain embodiments, a coupling can be used to connect two shafts together at their ends for the purpose of transmitting power. In other embodiments, a coupling can be used to join two pieces of rotating equipment while permitting some degree of misalignment or end movement or both. Couplings do not normally allow disconnection of the two parts, such as shafts during operation. (Search "coupling" on Wikipedia.com July 26, 2021. CC-BY-SA 3.0 Modified. Accessed July 27, 2021.) |
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