AU2006220444A1

AU2006220444A1 - An orthotic device

Info

Publication number: AU2006220444A1
Application number: AU2006220444A
Authority: AU
Inventors: Dennewald Adrian
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-09-23
Filing date: 2006-09-22
Publication date: 2007-04-19
Anticipated expiration: 2026-09-22
Also published as: AU2006220444B2

Description

AUSTRALIA

PATENTS ACT 1990 COMPLETE SPECIFICATION NAME OF APPLICANT(S):: Adrian Dennewald ADDRESS FOR SERVICE: DAVIES COLLISON CAVE Patent Attorneys 255 Elizabeth Street, Sydney, New South Wales, Australia, 2000 INVENTION TITLE: An orthotic device The following statement is a full description of this invention, including the best method of performing it known to me/us:- 5102

IND

S-1- AN ORTHOTIC DEVICE FIELD OF INVENTION The present invention relates to orthotic devices. In a particular form, the present invention relates to an orthotic device for stretching tissue within the neck of a patient.

\O

IBACKGROUND OF THE INVENTION Chiropractors have for many years studied the biomechanics of the spine and the adverse effects of reduced motion in the joints of the spine. A person's physical movement can become restricted when soft tissue structures alter, most commonly due to contraction of the soft tissue structures. These soft tissue structures include, amongst other things, ligaments, joint capsules, muscles and tendons.

Prolonged poor posture or trauma can create stresses that effect normal motion of the spine. These stresses can encourage structural changes, altering the spine's optimal functional position. This can result is inefficient biomechanics and a decrease in the movement in the joints of the spine.

When structural changes occur in the spine, the surrounding soft tissue structures can also change due to their altered position. This altered position of the spine and surrounding soft tissue structures exacerbates poor movement, encouraging the spinal joints further away from optimal functioning. In the cervical spine, this process is evident when the normal lordotic position is decreased. This can be visualised via diagnostic imaging using an Xray analysis.

One proposed solution has included a neck support for promoting a structural positional change in the spine. This neck support includes two rigid wall portions meeting at an apex forming a generally triangular shape.

In operation, the patient lies on the flat surface with their neck contacting the apex of the neck support such their head is suspended above the surface.

However, there are problems associated with this form of neck support. To achieve a structural positional change in the spine, the wall portions are made from a rigid plastic and extend at an angle of approximately seventy degrees relative to the surface, applying an excessive tractional force on the ligaments of the neck when in use. This excessive force applied to the neck can cause significant discomfort to the patient.

Furthermore, due to the sharp angle which the wall portions meet at the apex, global overextension of the neck can occur due to the small surface area in contact with the neck, leading to further discomfort for the user.

Moreover, the apex of the neck support can only contact upper portions of the neck because the wall portions cannot be placed lower down due to the angle of the wall portions. This can be unsuitable for particular patients requiring stretching of the lower portion of the neck.

The present invention seeks to ameliorate at least some of the above mentioned problems.

Furthermore, the present invention seeks to provide an orthotic device which in use is more comfortable for the patient.

Additionally, the present invention seeks to provide an orthotic device which in use can stretch various portions of the neck, rather than achieve a structural positional change in the spine.

The reference in this specification to any prior publication (or information derived from it), or to any matter which is known, is not, and should not be taken as an acknowledgment or admission or any form of suggestion that that prior publication (or information derived from it) or known matter forms part of the common general knowledge in the field of endeavour to which this specification relates.

-3- SUMMARY OF THE INVENTION According to a first aspect of the present invention there is provided an orthotic device including: a body having a base and a first support surface, wherein in use, the first support surface supports a selected region of a patient's neck whilst suspending the patient's head.

In one embodiment, the first support surface is made from cushioning material.

In another form, the orthotic device is made from a cushioning material. Preferably, the cushioning material compresses from between 5% to 35% when supporting the selected region of the patient's neck, and more preferably between 10% to 25% when supporting the selected region of the patient's neck.

In one form, the cushioning material consists of a synthetic foam such as for example a closed cell cross-linked polyethylene foam.

In use, the patient lies on a substrate surface such that the patient is in a supine position when the patient's neck is supported by the support surface and the head is suspended above the substrate.

In one form, the first support surface is in the form of a bulbous protrusion extending from the body.

In another form, the bulbous portion is a substantially half cylindrical protrusion extending from the body.

In one embodiment the base is an elongate planar surface.

In another embodiment the orthotic device includes side faces extending from the base to the first support surface, and wherein at least one side face tangentially meets with the first support surface.

In one form, the surface area of the first support surface in contact with the patient's neck is less than the surface area of the base in contact with the substrate surface.

According to another aspect, the orthotic device may include a second support surface for supporting a region of the patient lower down than the selected region of the patient's neck to restrict cervical over-extension, wherein the spacing between an apex of the first support surface and the base is greater than spacing between the second support surface and the base. Preferably, the second support surface supports a region of the patient's neck immediately lower than the selected region.

In one embodiment, the first support surface is in the form of a first convex surface and the second support surface is in the form of a first concave surface.

In another embodiment the first convex surface includes a degree of curvature which is less than the degree of curvature of the first concave surface.

Preferably, the first convex surface tangentially meets the first concave surface and the first concave surface is part of a recess in the body.

Preferably, the recess is substantially a quarter cylindrical recess in the body, wherein the half cylindrical protrusion includes a radius greater than a radius of the quarter cylindrical recess.

According to another aspect, the orthotic device includes a third support surface adjacent the first contact surface.

In one form, the third contact surface includes a second convex surface and a second concave surface.

In another form, the second concave surface is adjacent the first convex surface, and the second concave surface is adjacent the second convex surface.

In one embodiment, the orthotic device includes side faces extending from the base to the first, second and third support surfaces, and wherein at least one side face tangentially meets with the second convex surface.

In another embodiment, the second convex surface tangentially meets the second concave surface.

In one form, the apex of the second convex surface tangentially meets the second concave surface.

In another form, spacing between the apex of second convex surface and the base is less than spacing between the first convex surface and the base.

In one embodiment, the degree of curvature of second convex surface is greater than the degree of curvature of the first convex surface.

In another embodiment, the degree of curvature of the second concave surface is greater than the degree of curvature of the first and second convex surfaces and the first concave surface.

According to another aspect the present invention provides an orthotic device including a body having a base and a first support surface for supporting a selected region of a patient's neck, wherein the orthotic device is made from a cushioning material.

In one embodiment the first support surface operates as a fulcrum for suspending the patient's head above a substrate surface.

According to another aspect of the present invention, a method is provided for stretching a patient's neck using an orthotic device, the orthotic device including a body having a base and a first support, wherein the method includes the patient lying in a supine position on a substrate surface such that the support surface of the orthotic device supports a selected region of a patient's neck whilst suspending the patient's head above the substrate surface.

In one embodiment, the orthotic device includes a second support surface for supporting a portion of the neck located lower than the selected region of the neck supported by the first support surface, the method including the patient positioning the second support surface the portion of the neck lower than the selected region to restrict cervical over-extension.

DESCRIPTION OF PREFERRED EMBODIMENTS Figures 1 to 3 show an example of an orthotic device 10 according to a first preferred embodiment of the present invention. The orthotic device 10 includes a body 20 including a base 30 and a first support surface 40. In use, the first support surface 40 supports a selected region of a patient's neck 70 whilst suspending the patient's head 80. The first support surface 40 acts as a positional fulcrum such as to gently bend the patient's neck over the first support surface 40 whilst suspending the patient's head 80 above a substrate surface 130.

In one form, the orthotic device 10 includes a second support surface 50 for supporting either a region of the patient's neck located lower than the selected region 70 supported by the first support surface 40 or the patient's shoulders 90 such as to restrict cervical overextension. Spacing between an apex 60 of the first support surface 40 and the base 30 is greater than spacing between the second support surface 50 and the base The first support surface 40 is in the form of a first convex surface 100 and the second support surface 50 is in the form of a first concave surface 110. The first convex surface 100 and the first concave surface 110 are shaped to support the curvature of a patient's neck 70, head 80 and shoulders 90. The first convex surface 100 includes a degree of curvature which is less than the degree of curvature of the first concave surface 10. In this form the first convex surface 100 tangentially meets the first concave surface 110 to provide a gradual curvature of the support surfaces. This tangential meeting of the convex support surface 100 and the concave support surface 110 allows the first support surface to be placed at selected regions of the patient's neck As clearly shown in the side view of the orthotic device 10 in Fig. 2, the first convex surface 100 is part of a bulbous portion of the body 20 and the first concave surface 110 is part of a recess in the body 20. In one form the bulbous portion is substantially a half cylindrical protrusion extending from the body 20 and the recess is substantially a quarter cylindrical recess in the body. As illustrated by the dotted lines in Figure 2, the half cylindrical protrusion includes a radius 123 greater than a radius 126 of the quarter cylindrical recess where the degree of curvature of the quarter cylindrical recess is greater than the degree of curvature of the half cylindrical protrusion.

In one form, the orthotic device 10 includes side faces 120 extending from the base 30 to the first support surface 40 and second support surface 50. At least one side face 120 tangentially meets with the first convex surface 100. At least one side face 120 is substantially vertical in a normal position and wherein the base 30 is orthogonal to the at least one side face 120. Additionally, the base 30 includes a substantially elongate planar surface such as to provide a stable support surface to rest on a substrate surface 130 which the patient lies upon in use. In use, the surface area of the first support surface 40 in contact with the patient is less than the surface area of the elongate planar surface in contact with substrate surface.

As shown clearly in the side view of Figure 2, the first convex surface 100 tangentially meets at least one of the side faces 120. This tangential meeting between the first convex surface 100 and the adjacent side face 120 allows for the patient's head to be supported whilst being suspended, restricting cervical over-extension. By attempting to restrict.

cervical over-extension, an increase in movement of the patient's neck 70 within optimal limits can be obtained and additionally improve the functional relationship between soft tissue structures and the joints in the spine. Furthermore, by providing a large contact surface in the form of a bulbous portion of the body 20, cervical over-extension is further reduced.

The first support surface 40 may be made from a cushioning material. Alternatively the first and second support surface 40, 50 may be made from cushioning material or substantially the entire orthotic device 10 may made from a cushioning material. The cushioning material may be resilient. In use, the orthotic device 10 resiliently compresses such that the weight of the patient's neck 70, head 80 and shoulders 90 are supported. This configuration alleviates neck soreness caused by more rigid material used in prior art devices. Additionally, due to the bulbous portion of the orthotic device 10, the patient's head 80 is slightly lifted from the substrate surface 130 whilst the patient lies in a supine position, suspending the patient's head 80 from the substrate surface 130 and applying a gentle stretch to the patient's neck 70 and spine. The cushioning material can resiliently compress between 5% to 35% when supporting the selected region of the patient's neck Preferably, the cushioning material compresses between 10% to 25% when supporting the selected region of the patient's neck. In one form, the resiliently cushioned material can take the form of synthetic foam. The synthetic foam may be in the form of closed cell cross-linked polyethylene foam.

Another example of the orthotic device 135 is shown in Figures 4 and 5. Figure 4 shows a perspective view of the orthotic device 135 and Figure 5 shows a side view of the orthotic device 135. The orthotic device 135 includes a third support surface 140 adjacent the first contact surface 40 for supporting the back of the patient's head 80. The third support surface 140 forms a generally higher positional fulcrum point at the first convex surface 100. The third support surface 140 includes a second convex surface 150 and a second concave surface 160. The second concave surface 160 is located adjacent the first convex surface 100, and the second concave surface 160 is located adjacent the second convex surface 150. The side faces 120 extend from the base to the first 40, second 50 and third support surfaces 140. When the patient's neck 70 is supported by the first support surface and third support surface 140, a gap between the first convex surface 100 and the second convex surface 150 leaves a portion of the patient's neck 80 failing to be in contact with the orthotic device 135 such as to focus the stretching applied to the patient's neck in contact with the first support surface The second convex surface 150 tangentially meets the second convex surface 160. This provides a gradual curved surface for supporting the back of the patient's head 80. An apex 155 of the second convex surface 150 tangentially meets the second concave surface 160.

In this form, spacing between the apex 155 of second convex surface 150 and the base is less than spacing between the first convex surface 100 and the base 30 such as to suspend the patient's head 70 above the substrate surface 130. The degree of curvature of second convex surface 150 in this form is greater than the degree of curvature of the first convex surface 100. Additionally, the degree of curvature of the second concave surface 160 is greater than the degree of curvature of the first convex surface 100, the second convex surface 150 and the first concave surface 110.

Optional embodiments of the present invention may also be said to broadly consist in the parts, elements and features referred to or indicated herein, individually or collectively, in any or all combinations of two or more of the parts, elements or features, and wherein specific integers are mentioned herein which have known equivalents in the art to which the invention relates, such known equivalents are deemed to be incorporated herein as if individually set forth.

Although a preferred embodiment has been described in detail, it should be understood that various changes, substitutions, and alterations can be made by one of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. An orthotic device including: a body having a base and a first support surface, wherein in use, the first support surface supports a selected region of a patient's neck whilst suspending the patient's head.

2. The orthotic device of claim 1, wherein the first support surface is made from cushioning material.

3. The orthotic device of claim 1, wherein the orthotic device is made from a cushioning material.

4. The orthotic device of claim 2 or 3, wherein the cushioning material is foam.

5. The orthotic device of claim 4, wherein the foam is in the form of closed cell cross- linked polyethylene foam.

6. The orthotic device of any one of claims 2 to 5, wherein the cushioning material compresses from between 5 to 35% when supporting the selected region of the patient's neck.

7. The orthotic device of any one of claims 2 to 5, wherein the cushioning material compresses between 10 to 25% when supporting the selected region of the patient's neck.

8. The orthotic device of any one of claims 1 to 7, wherein in use, the patient lies on a substrate surface such that the patient is in a supine position when the patient's neck is supported by the support surface and the head is suspended above the substrate.

9. The orthotic device of any one of claims 1 to 8, wherein the first support surface is in the form of a bulbous protrusion extending from the body. -11- The orthotic device of claim 9, wherein the bulbous portion is a substantially half cylindrical protrusion extending from the body

11. The orthotic device of any one of claims 1 to 10, wherein the base is an elongate planar surface.

12. The orthotic device of any one of claims 1 to 11, wherein the orthotic device includes side faces extending from the base to the first support surface, and wherein at least one side face tangentially meets with the first support surface.

13. The orthotic device of any one of claims 1 to 12, wherein the surface area of the first support surface in contact with the patient's neck is less than the surface area of the base in contact with the substrate surface.

14. The orthotic device of any one of claims 1 to 13, wherein the orthotic device includes a second support surface for supporting at least one of the patient's lower neck and a portion of the shoulders to restrict cervical over-extension, wherein the spacing between an apex of the first support surface and the base is greater than spacing between the second support surface and the base. The orthotic device of claim 14, wherein the first support surface is in the form of a first convex surface and the second support surface is in the form of a first concave surface.

16. The orthotic device of claim 15, wherein the first convex surface includes a degree of curvature which is less than the degree of curvature of the first concave surface.

17. The orthotic device of claim 15 or 16, wherein the first convex surface tangentially meets the first concave surface.

18. The orthotic device of any one of claims 15 to 17, wherein the first concave surface -12- is part of a recess in the body.

19. The orthotic device of claim 18, wherein the recess is substantially a quarter cylindrical recess in the body. The orthotic device of claim 19 dependent on claim 10, wherein the half cylindrical protrusion includes a radius greater than a radius of the quarter cylindrical recess.

21. The orthotic device of any one of claims 14 to 20, wherein the orthotic device includes a third support surface adjacent the first contact surface for supporting the back of the patient's head.

22. The orthotic device of claim 21, wherein the third contact surface includes a second convex surface and a second concave surface.

23. The orthotic device of claim 22, wherein the second concave surface is adjacent the first convex surface, and the second concave surface is adjacent the second convex surface.

24. The orthotic device of claim 22 or 23, wherein the orthotic device includes side faces extending from the base to the first, second and third support surfaces, and wherein at least one side face tangentially meets with the second convex surface. The orthotic device of any one of claims 22 to 24, wherein the second convex surface tangentially meets the second concave surface.

26. The orthotic device of any one of claims 22 to 25, wherein an apex of the second convex surface tangentially meets the second concave surface.

27. The orthotic device of claim 26, wherein spacing between the apex of second convex surface and the base is less than spacing between the first convex surface and the base. -13-

28. The orthotic device of any one of claims 22 to 27, wherein the second convex surface has a degree of curvature greater than a degree of curvature of the first convex surface.

29. The orthotic device of any one of claims 22 to 28, wherein a degree of curvature of the second concave surface is greater than the degree of curvature of the first and second convex surfaces and the first concave surface.

30. A method of stretching a patient's neck using an orthotic device, the orthotic device including a body having a base and a first support which operates as a fulcrum, wherein the method includes the patient lying in a supine position on a substrate surface such that the support surface of the orthotic device supports a selected region of a patient's neck whilst suspending the patient's head above the substrate surface.

31. The method according to claim 31, wherein the orthotic device includes a second support surface for supporting a portion of the neck located lower than the selected region of the neck supported by the first support surface, the method including the patient positioning the second support surface the portion of the neck lower than the selected region to restrict cervical over-extension.

32. An orthotic device as substantially herein before described with reference to the accompanying drawings.

33. A method of stretching a patient's neck using an orthotic device as substantially herein before described with reference to the accompanying figures.