LOW PROFILE KNEE BRACE AND METHOD OF USING SAME
20240009016 ยท 2024-01-11
Inventors
Cpc classification
A61F5/0125
HUMAN NECESSITIES
International classification
Abstract
Methods of manufacturing a low-profile brace for treating a ligament injury are provided. Among other features, a method of manufacturing includes providing a liner and permanently attaching provided first and second metal components configured to be formed to the shape of a thigh and a calf of the patient; and providing upper and lower lateral rigid members, each having a three-dimensional structure comprising a recessed portion extending along a length of the respective lateral rigid member. The recessed portion includes a substantially y-shaped portion that is: disposed at a proximal end of the lower lateral rigid member or at a distal end of the upper lateral rigid member, and further raised outwardly away from the patient's leg from adjacent portions of the recessed channel that separate the substantially y-shaped portion from a perimeter of the lower or upper lateral rigid member. Related methods of use are also provided.
Claims
1. A method of manufacturing a low-profile brace for use in treating a ligament injury of a patient, the method comprising: providing a first metal component configured to be formed to a shape of a thigh of the patient and a second metal component configured to be formed to a shape of a calf of the patient; providing a liner; permanently attaching the first and second metal components in the liner; providing an upper lateral rigid member and a lower lateral rigid member, the upper lateral rigid member and the lower lateral rigid member each having a three-dimensional structure comprising a recessed portion extending along a length of the respective lateral rigid member, the recessed portion comprising a substantially y-shaped portion that is: disposed at a proximal end of the lower lateral rigid member or at a distal end of the upper lateral rigid member, and further raised outwardly away from the patient's leg from adjacent portions of the recessed channel that separate the substantially y-shaped portion from a perimeter of the lower lateral rigid member or of the upper lateral rigid member; securing the upper lateral rigid member to the first metal component and the liner; securing the lower lateral rigid member to the second metal component and the liner; providing a lateral hinge assembly; engagingly connecting the upper lateral rigid member to an upper portion of the lateral hinge assembly; and engagingly connecting the lower lateral rigid member to a lower portion of the lateral hinge assembly.
2. The method of claim 1, further comprising: custom forming the first metal component and liner to the shape of the thigh of the patient; and custom forming the second metal component and liner to the shape of the calf of the patient.
3. The method of claim 1, wherein the first and second metal components are each cut into a substantially L shape.
4. The method of claim 1, further comprising: providing a medial hinge assembly; engagingly connecting the first metal component and the liner to an upper portion of the medial hinge assembly; and engagingly connecting the second metal component and the liner to a lower portion of the medial hinge assembly.
5. The method of claim 1, wherein the liner further comprises an antimicrobial coating.
6. The method of claim 1, wherein the liner comprises a plurality of windows to expose at least one of the first or the second metal components.
7. The method of claim 1, wherein the liner comprises a combination of foam and fabric padding.
8. The method of claim 1, wherein the first and second metal components each comprise titanium.
9. The method of claim 1, wherein the upper and lower lateral rigid members comprise a metal selected from the group consisting of titanium, aluminum, magnesium, steel, and combinations thereof.
10. The method of claim 1, further comprising attaching a plurality of straps directly to the liner.
11. The method of claim 10, wherein the straps sit in line with the brace.
12. The method of claim 10, wherein the straps are attached directly to the liner on at least one side of the brace.
13. The method of claim 1, wherein the recessed channel comprises substantially continuous portions of the rigid upper member or of the rigid lower member.
14. The method of claim 1, wherein the recessed channel is not an aperture.
15. The method of claim 1, wherein the recessed channel is recessed inward toward the wearer's leg with respect to substantially an entire respective perimeter of the rigid upper member or of the rigid lower member.
16. The method of claim 1, wherein the perimeter of the rigid upper member or of the rigid lower member further comprises at least one portion further raised from adjacent portions of the respective perimeter and having a strap tab attached thereunder.
17. The method of claim 16, wherein the strap tab is attached to a ring configured to receive a portion of a respective one of a plurality of straps such that the respective one of the plurality of straps sits in line with the respective upper lateral rigid member or lower lateral rigid member.
18. A method of treating ligament instability of a knee, the method comprising: providing a low-profile knee brace for an individual in need thereof, the brace having: a malleable leg cuff assembly, comprising: an upper thigh cuff component capable of being formed to custom fit the thigh of a wearer; a lower leg cuff component capable of being formed to custom fit the calf of a wearer; and a continuous non-removable liner encapsulating the leg cuff assembly; a hinge assembly; an upper lateral rigid member connected to the upper thigh cuff component, a distal end of the lateral upper rigid member being pivotally coupled to an upper portion of the hinge assembly; a lower lateral rigid member connected to the lower leg cuff component, a proximal end of the lateral lower rigid member being pivotally coupled to a lower portion of the hinge assembly; wherein each of the upper lateral rigid member and the lower lateral rigid member has a three-dimensional structure comprising a recessed portion extending along a length of the respective lateral rigid member, the recessed portion comprising a substantially y-shaped portion that is: disposed at a proximal end of the lower lateral rigid member or at a distal end of the upper lateral rigid member, and further raised outwardly away from the individual's leg from adjacent portions of the recessed channel that separate the substantially y-shaped portion from a perimeter of the lower lateral rigid member or of the upper lateral rigid member; wherein the use of the low-profile knee brace provides support to the injured knee.
19. The method of claim 18, wherein the recessed channel is recessed inward toward the individual's leg with respect to substantially an entire respective perimeter of the rigid upper member or of the rigid lower member.
20. The method of claim 18, wherein the perimeter of the rigid upper member or of the rigid lower member further comprises at least one portion further raised from adjacent portions of the respective perimeter and having a strap tab attached thereunder.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0019]
[0020]
[0021]
[0022]
[0023]
[0024]
DETAILED DESCRIPTION OF CERTAIN INVENTIVE EMBODIMENTS
[0025] Embodiments of this application relate to orthopedic braces for use in treating a variety of injuries to the knee and surrounding ligaments. More particularly, embodiments of the brace disclosed herein are intended for use in activities of daily living for patients with ACL deficiencies, collateral ligament deficiencies, hyperextension injury, or for prophylactic use. As will be described in greater detail below, the brace is designed to address weight, strength, support, and aesthetic requirements for pre- and post-operative individuals having ligament damage particularly individuals who are engaged in an active lifestyle.
[0026] The brace as described and claimed herein addresses the shortcomings of prior art devices by greatly enhancing patient comfort and therefore patient compliance. Compliance is driven primarily by comfort; if a brace is not comfortable, a patient will not wear it. Comfort is in turn driven by the profile, weight, and fit of a brace. Embodiments of the brace disclosed herein include a low-profile knee brace that is both lightweight and provides structural strength to a patient's knee.
[0027] Thus, embodiments of the invention relate to a brace having a very low-profile while maintaining stability and support for the user. With enhanced comfort and reduced bulkiness, the disclosed brace promotes greater user compliance. Features of the brace include, without limitation, a lightweight construction that is less bulky than prior art devices. Bulkiness is reduced not only by the use of a lightweight metal or metal alloy such as titanium or titanium alloy in the construction of the brace but also in the integration of a liner which is continuous and encapsulates portions of the relatively thin frame. The liner provides enhanced comfort, reduced profile, and additional structural support to the brace. The primary goal of the brace disclosed herein is to improve patient compliance. It is a goal of the invention to lower the base profile while still providing a suitable brace for ACL therapy as an ACL brace must have a certain degree of strength to provide stability and support. The metal/metal alloy is selected to provide this strength and at the same time address the issue of brace weight. Moreover, as will be described in greater detail below, the brace disclosed herein combines stiffness and malleability in a manner which promotes motion and activities of daily living for a patient. A brace that is too stiff may hinder fit because it does not flex with the wearer's muscles and a brace that is too malleable will not provide adequate support. By striking the balance between malleability and stiffness, the disclosed brace promotes patient comfort and compliance while affording the necessary structural support. The rigid lateral bars as will be described with reference to
[0028] A better understanding of the various features of the invention can be gleaned from the following description read in conjunction with the accompanying drawings in which like reference characters refer to like elements. While the disclosure may be susceptible to various modifications and alternative constructions, certain illustrative features are shown in the drawings and are described in detail below. It will be understood, however, that there is no intention to limit the disclosure to the specific embodiments disclosed, but to the contrary, the intention is to cover all modifications, alternative constructions, combinations, and equivalents falling within the spirit and scope of the disclosure.
[0029] Furthermore, it will be appreciated that unless a term is expressly defined in this patent to possess a described meaning, there is no intent to limit the meaning of such term, either expressly or indirectly, beyond its plain or ordinary meaning.
[0030] For ease of understanding the disclosed features of an orthopedic device, the anterior and posterior portions of the orthopedic device are described independently. However, the anterior and posterior portions of the orthopedic device function together to support and stabilize anatomical portions of the wearer of the device. As used herein, proximal has its ordinary meaning and refers to a location situated next to or near the point of attachment or origin or a central point, or located toward the center of the body. Likewise, the term distal has its ordinary meaning and refers to a location that is situated away from the point of attachment or origin or central point, or located away from the center of the body. The term medial refers to a position that is closer to the midline of the body, whereas the term lateral refers to a position further from the midline of the body. The terms upper and lower describe the position of certain elements as being either above or below the hinge portions of the brace assembly. An upper element is above the hinge and knee joint, whereas a lower element is below the hinges and knee joint. The term posterior also has its ordinary meaning and refers to a location that is behind or to the rear of another location. Lastly, the term anterior has its ordinary meaning and refers to a location that is ahead of or to the front of another location.
[0031] The terms rigid, flexible, malleable and resilient may be used herein to distinguish portions of certain features of the orthopedic device. The term rigid is intended to mean an element of the device is generally or substantially inflexible. Within the context of frame or support members or shells that are rigid, it is intended to indicate that they do not lose their overall shape when force is applied. The term flexible or malleable, by contrast, is intended to encompass features that are capable of bending or flex under load.
[0032] Referring initially to
[0033] The brace assembly 10 is shown to generally include an upper cuff component or thigh cuff component 14, a lower cuff component or calf cuff component 16, and a pair of hinge assemblies 18, 19. The brace 10 is preferably used to stabilize the knee and also can be used to support the knee joint during rehabilitation after an injury. A feature of the brace 10 is its low-profile construction. The upper cuff 14 and lower cuff component 16 are conformable to the thigh and lower calf of the wearer, respectively. The thigh cuff component 14 and the lower cuff component 16 are formed from a thin, metal or metal alloy material which provides structural support while still allowing for slight flex upon exertion of force. As used herein, the metal or metal alloy may include any number of metals which are both relatively light weight while still providing structural strength to the brace. Suitable metal or metal alloys can include, without limitation, aluminum, steel, magnesium, titanium, or combinations thereof. Alternatively, the metal can be a molded carbon fiber composite. In preferred embodiments, the metal is a titanium or titanium alloy. The thigh cuff component 14 is configured to fit the anterior portion of the wearer's leg above the knee and the lower cuff component 16 is configured to fit the calf of the wearer. In a preferred embodiment, the thigh cuff component 14 and lower cuff component 16 are custom fit to the wearer's leg. The brace frame, comprised of the upper cuff 14 and lower cuff 16, are encapsulated by a single continuous liner as will be described in greater detail below.
[0034] The thigh cuff component 14 includes two downwardly extending portions 24 and 25 positioned medially and laterally relative to the wearer's knee, respectively. A femoral transverse portion 26 of the thigh component 14 is custom formed to conform to the wearer's thigh to provide structure and strength as well as a customized fit. Advantageously, the thigh cuff component 14 anchors the femur and provides a custom fit to the top of the anterior thigh.
[0035] The lower cuff component 16 includes a posterior cuff 30, having a medial arm 32 and a lateral arm 34 extending therefrom. The lower cuff component 16 has substantially the same structure as the upper thigh cuff component 14, but is sized to conform to the lower leg of the user. The lower cuff 30 has substantially the same configuration as the upper thigh cuff component 14, but the arcuate shape thereof is sized comparatively smaller to snugly conformingly engage the calf of the lower leg.
[0036] The brace 10 maintains the thigh and calf in proper alignment and promotes stabilization. The hinges 18, 19 are configured with a limited range of rotation to prevent hyperextension of the lower leg.
[0037] Medial hinge 19 also can include a hinge deflector for preventing interference between medial hinges when a user is wearing a knee brace on each leg such as the deflector described in U.S. Pat. No. 6,890,314. The hinge deflector acts as a shield to the internal components of the medial hinge 19 and deflects the opposite medial hinge, preventing the hinges from locking together. The hinges 18, 19 can be any of a number of suitable hinge assemblies including, for example, the FourcePoint hinge (DJO Global, Vista, CA). Advantageously, the hinge assemblies are configured to react during leg extension and offer an increasing resistance in the last 35 degrees of extension, in order to reduce extension shock and increase posterior tibial loads. A resilient pad 56 can be provided to cushion the knee joint from the rigid hinges 18, 19. In addition to use in injuries or instabilities of ligaments, it will be appreciated by a skilled artisan, the hinge and pads can be modified for other treatment modalities such as osteoarthritis.
[0038] As will be described more particularly with reference to
[0039] A feature of the present invention is a two-dimensional configuration of the upper cuff component 14 and lower cuff component 16 coupled with lateral rigid members. In some aspects, the lateral rigid members are three-dimensionally constructed lateral rigid members. Two-dimensional construction of thin metal/metal alloy allows for lightweight structural support for the knee with a degree of malleability for the portions of the brace which are positioned around the patient's thigh and calf region. As used herein, two-dimensional construction refers to a process by which flat metal/metal alloy is cut into a substantially L-shape and the flat metal/metal alloy is then integrally encapsulated with a liner (as will be described in greater detail below). The flat upper cuff component and flat lower cuff component can then be formed to provide a custom fit and to conform to the shape of a patient's thigh and calf anatomy. The two-dimensional fabrication of the upper cuff component 14 is illustrated
[0040]
[0041] Turning to
[0042] Still with reference to
[0043]
[0044] Turning now to
[0045] Methods of treating ligament instability of the knee are likewise provided. The ligament instabilities can include injury to a patient's ACL, PCL, MCL, LCL, or combinations thereof. The method includes identifying an individual presenting with a ligament instability and providing the individual with a low-profile knee brace having a malleable upper thigh cuff component; a malleable lower leg component; a liner encapsulating the upper thigh cuff component and the lower leg cuff component; bilateral hinge assemblies; a plurality of straps for securing the brace to a wearer's leg, wherein the plurality of straps are attached directly to said liner on at least one side of the brace; and a pair of metal/metal alloy rigid members secured to the hinge assemblies. In one aspect, the metal/metal alloy is a titanium or titanium alloy. The metal/metal alloy rigid members comprise a three-dimensional configuration, each having a length with a recess defining the length of each rigid member. The three-dimensional rigid members, constructed of metal/metal alloy, are very rigid while still maintaining a lightweight profile. The use of the low-profile knee brace described herein provides support to the injured knee. The upper and lower cuff components are encapsulated by a liner, which provides additional structural support to the malleable elements while still affording comfort without bulkiness.
[0046] In one aspect, the method of treating ligament instability of the knee can be employed prior to surgical intervention for correcting damage to a knee ligament. In other aspects, the method can be employed as part of a patient's post-operative rehabilitation after a ligament reconstruction. Use of a brace as described herein can protect a patient's knee from further injury while enabling the patient to return to activities of daily living as well as pursue athletic endeavors. In yet another aspect, a method of preventing knee injuries is contemplated. Given the physicality of a number of sports activities, a brace as described herein can be used to prevent knee injuries. Exemplary sports activities include, without limitation, skiing, football, snowboarding, soccer, basketball, volleyball, professional rodeo, rugby, lacrosse, water sports or similar. The brace is similarly well suited for use by individuals who are engaged in activities of daily living and who have ACL deficiencies, collateral ligament deficiencies, hyperextension injury, or who wear a brace for prophylactic use. The lightweight construction, combination of rigid and malleable portions, reduced profile, and liner integral to the malleable portions of the brace provide a very lightweight, comfortable, yet strong and functional brace. As comfort drives compliance, the use of the brace described herein promotes patient compliance.
[0047] Another feature of the invention is the optional inclusion of an integrated biofeedback sensor in electronic communication with the orthotic brace. In one aspect, the biofeedback sensor is attached to the underside of the upper and/or lower rigid members. The biofeedback sensor may comprise a low energy wireless technology such as Bluetooth 4.0 with a sensor application for IOS and Android operating systems. The sensor is configured to measure wear time to monitor wearer compliance with the brace. An additional feature of the biofeedback sensor is a temperature sensor, either direct or IR (off surface sensing). The sensor can likewise optionally include a 3-axis accelerometer, a 3-axis gyroscope, a magnetometer, a humidity meter, a proximity sensor, a barometric pressure monitor, and/or monitors for peripheral capillary oxygen saturation, an indoor location system such as iBeacon for GPS monitoring, a monitor for counting cycles of angular flexes, or combinations thereof. Other features can include an audible and/or tactile feedback sensor to alert the patient if and when certain parameters are achieved, exceeded, or not yet achieved.
[0048] The biofeedback sensor is preferably powered by an alkaline power source or lithium polymer rechargeable battery. The biofeedback sensor is removably attached to the orthotic brace via a micro USB or inductive charging. In the case of inductive charging, the device is hermetically sealed to allow for a waterproof or substantially water-resistant structure.
[0049] The biofeedback sensor provides data analytics and reporting capabilities. In communication with a smartphone device, data can be uploaded from the sensor to the smartphone. The smartphone device is configured to organize the data to produce a report relating to usage, wear time, or other parameters measured by the biosensor. The report provides meaningful information to the patient and/or health care provider and treatment modalities can be modified based upon the data generated and reported.
[0050] Although the present invention has been described in terms of certain preferred features, other features of the invention including variations in dimensions, configuration and materials will be apparent to those of skill in the art in view of the disclosure herein. In addition, all features detailed in connection with any one aspect herein can be readily adapted for use in other aspects herein. The use of different terms or reference numerals for similar features in different embodiments does not imply differences other than those which may be expressly set forth. Accordingly, the present invention is intended to be described solely by reference to the appended claims, and not limited to the preferred embodiments disclosed herein.