UNIVERSALLY ADJUSTABLE CERVICAL COLLAR
A universally adjustable cervical collar is in the form of a U-shaped base with a front joined to a pair of rearwardly extending wings. Left and right planar chin supports are pivotally connected at their distal ends to the distal ends to of respective wings with a chin piece connected between the upper proximal ends of the chin supports. An adjustable latch is individually coupled between each wing and the lower proximal end of the associated chin supports. Preferably the latch is in the form of 1) an arcuate slot in each wing arranged around the respective pivot axis with a track formed on opposite sides of the slot having inwardly projecting ribs and 2) a retractable locking pin carried by each chin support and moveable within the respective slot, the locking pins having outwardly projecting ribs adapted to engage adjacent ribs in the associated track to lock the chin support to the associated wing when in the locked position and to allow the chin support to be moved relative to the associated wing when in the retracted position
The present invention relates to portable neck braces and more particularly to a cervical collar that is universally adjustable to provide the quality of “one size fits all”, easy to install and provides a comfortable fit to enable a patient to wear the collar in compliance with the physician's orders.
BACKGROUND OF THE INVENTIONPortable neck braces have been used for years to immobilize the head and neck of a patient and put them in proper alignment after an injury as a result of trauma or disease. Cervical collars are generally of two types, either off-the-shelf-stock type which comes in a variety of sizes to accommodate a population of patients or collars which have certain adjustable features to reduce or hopefully eliminate the need for a variety of sizes.
The art relating to portable neck braces and cervical collars is crowded, particularly in the patent literature. The various prior art braces have certain shortcomings, leaving a need to be filled. For example, the portion of the brace which supports the chin needs to be adjustable in a vertical direction to accommodate different anatomies. In addition the chin support needs to be adjustable to allow the head to be canted to one side or tile other; i.e. tilted relative to the vertical. In addition to those needs the brace or collar must be economical to manufacture, sturdy, easy to install, comfortable to wear and easy to adjust.
With respect to the prior art noted in certain patents see U.S. Pat. No. 7,674,234, (“234 patent”) which discloses a cervical collar that uses a somewhat complicated rack and pinion arrangement to raise and lower a chin strap; however, there is no ability to adjust the chin strap supports independently so the patient's head can be canted to one side (tilted relative the vertical) to accommodate a required anatomical constraint. U.S. Pat. No. 6,254,560 discloses another somewhat complicated cervical collar in which only vertical adjustment appears to be possible. U.S. Pat. No. 5,005,563 discloses a cervical collar in which vertical adjustment is accomplished by means of a threaded groove and a worm screw. US Pub. No. 2004/0204666 A1, discloses a complicated cervical spine brace and traction device in which a rear portion abutting the patient's occipital region of the skull can be adjusted vertically by means of two lead screws and gear boxes. It would not appear to be user friendly or economical to manufacture. Also see US Patent Nos. 6,726,643, 6,036,664, Re Nos. 34,714, and 36,745 and US Patent Appin. 2005/0113728 A1.
The universally adjustable cervical collar of the present invention addresses the short comings of the prior art and has achieved significant commercial acceptance in a short period since it was introduced into the market earlier this year. As an example, the present invention is fairing quite well against a competitive cervical collar generally following the teachings of the '234 patent.
SUMMARY OF THE INVENTIONA cervical collar in accordance with this invention comprises a generally U-shaped base with a front, adapted to extend over the sternum of a patient, joined to a pair of rearwardly extending left and right wings or arms, adapted to extend over respective shoulders of the patient. Left and right generally planar chin or jaw supports are pivotally connected to the approximate distal ends of the associated wings and extend forwardly to a proximal end defining upper and lower proximal sections.
A chin piece, generally in the form of a semi-rigid strap, is pivotally mounted at each end to the upper proximal sections of the chin supports. An adjustable latching system in the form of a retractable latch mechanism is individually coupled between each of the arms and the lower proximal section of the associated chin supports. Each latch is arranged along an arc or sector of a circle centered on the associated axis about which the respective chin support is pivotally mounted on its associated wing.
In the preferred embodiment the latch mechanism includes a curved track positioned on each of the arms or the chin supports with a releasable locking pin positioned on the other member. Most preferably an arcuate slot is formed in the wings with a track having ribs or teeth extending inwardly from each side of the slot. A retractable locking pin is carried by the chin supports and provided with outwardly projecting ribs or teeth for engaging adjacent teeth on the track when in the locked position. When the pin is retracted from its locked position the proximal end of the chin supports are free to move relative to the wings and independently of each other. This allows the chin piece to not only be raised or lowered but canted at an angle to the base, i.e. to the vertical as is illustrated in
General discussion of the cervical collar and back piece
Referring now to the drawings and more particularly to
Referring now to
Left and right generally planar chin supports 18a and 18b, respectfully, are pivotally connected at their distal ends 18c (see
The adjustable latching system comprises an adjustable latch mechanism 22 (herein after “an adjustable latch” or “latch”) individually coupled between each arm or wing (10b,10c) and the associated chin support (18a,18b). Each adjustable latch is arranged along an arc about the respective pivot axis (19b,19c) to allow the proximal end of each chin support to be moved independently along the associated wing. The arc may be considered as a sector of a circle with its center at the respective pivot axis as shown. More specifically, the preferred adjustable latch comprises a curved track 21 formed on upstanding wall 21b surrounding an elliptical slot 21c, following the arc in each wing (
The range of the movement, or the chin supports, is illustrated in
Referring now to
The pin further includes anti- rotation stubs 26g to prevent the pin from rotating within the upper component 28 of the receptacle. Downwardly extending locking ribs 26h are arranged to engage adjacent radially extending ribs on the track formed in the wing to lock the associated chin support to the wing when the pin is in its locked position, as will become apparent.
Referring now to
The lower component 30 is in form of a cup defining a continuation of the through hole 28c with an annular flange 30b interrupted by opposing keyway ribs 30a for engaging keyway slots 18h in the lower proximal section of an associated chin support. See
During assembly the lower component 30 (except for the flange) is inserted into the opening 18g after the distal end of the chin support has been mounted to its respective wing. The lower portion 28h of the upper component 28 is then inserted through the slot and into the lower component and secured thereto by forcing the lip 281 through the opening 28c in the lower component until the retaining flaps 30e engage the lip 28i. The pin is then inserted through hole 28c and the retaining washer is forced into the groove 26e to retain the pin in place while allowing the pin limited axial movement to accommodate the locking and unlocking motion. (See
Each of the wings has indicia, 18i, on the outside thereof labeled 1-6 showing the extent of movement of each chin support relative the base. See
The curved track portion of the adjustable latch will now be described in reference to
One method of using the present invention is illustrated in
Next place the collar under the patient's chin and chest, as is illustrated in
Once positioned, place one hand on the collar and gently attach the strap 17b on the back piece 12 to the hooks 17a on the collar as is shown in
For final adjustment pull the head 26a of the locking pin outward and upward to adjust the position of the collar. Last push the head 26a inward to lock the collar in place. See
There has been described and illustrated a novel cervical collar and back piece which represents a significant improvement over the prior art. The collar is adjustable vertically to accommodate a wide range of patients; i.e., one size fits all. The collar also allows the chin piece to be inclined to accommodate a patient's anatomical constraints. Modifications and perhaps improvements of the invention will occur to those skilled in the art without departing from the spirit and scope thereof as defined in the appended claims.
Claims
1. A universally adjustable cervical collar comprising:
- a) a generally U-shaped base having a front, adapted to extend over a patient's sternum, joined to left and right rearwardly extending arms, adapted to extend over the patient's shoulders,
- b) left and right chin supports pivotally connected along generally horizontal axes to the distal ends of respective arms of the base and extending forwardly to upper and lower front sections.
- c) a chin piece disposed between the upper front sections of the chin supports and,
- d) an adjustable latch mechanism coupled between each of the arms and the lower front sections of the respective chin supports, each latch mechanism being arranged along an arc arranged about the respective pivot axis to allow each chin support to be moved relative to the collar base.
2. The collar of claim 1 wherein the latch mechanism is arranged to change the height of the chin piece.
3. The collar of claim 2 wherein the latch mechanism is arranged to change the angle of the chin piece relative to the vertical.
4. The collar of claim 3 wherein the latch mechanism includes a curved track positioned on each of the arms or the chin supports and a releasable locking pin positioned on the other member, the tracks having a plurality of spaced inwardly projecting ribs and the pins having outwardly projecting ribs arranged to engage adjacent ribs on the track in the locked position.
5. The collar of claim 4 wherein each track comprises a pair of tracks located on each side of a curved slot.
6. The collar of claim 5 wherein the tracks are located on the arms with each chin support is located inwardly of the respective arm.
7. The collar of claim 6 wherein the pin is arranged to travel within the respective slot and movable toward the respective arm to lock the chin support to the arm and away from the arm to allow the respective chin support to move relative to the arm, whereby the chin piece may be positioned at a desired height and angle relative to the base.
8. A universally adjustable cervical collar comprising:
- a) a generally U-shaped base having a front adapted to extend over a patient's sternum and clavicle joined to left and right rearwardly extending wings, adapted to extend over the patient's shoulders, each wing having a distal end,
- b) left and right chin supports, each chin support having a distal section pivotally connected to the distal ends of respective wings, and defining upper and lower proximal sections,
- c) a chin piece connected between the upper proximal sections of the chin supports, and
- d) an adjustable latch mechanism located between the lower proximal section of each chin support and the associated wing, each latch mechanism being arranged along a sector of a circle having a center at the respective pivot axis to allow the proximal sections of the chin supports to be independently adjusted relative to its associated wing.
9. The collar of claim 8 wherein the latch mechanism is in the form of an arcuate slot formed in the respective wing or chin support with a track section formed on at least one side of the slot and a movable locking pin mounted on the other member for engaging the track and independently locking each chin support to a selected position on the associated wing.
10. The collar of claim 9 wherein the slot is formed in the wings and the locking pin is carried by the chin supports.
11. The collar of claim 10 wherein the track is formed with inwardly projecting ribs on each side of the slot and the locking pin is formed with outwardly projecting ribs for selectively engaging the track ribs.
12. The collar of claim 11 wherein the locking pin is carried in a sleeve which rides in the slot.
13. The collar of claim 12 wherein the slot if framed by an annular shelf with the tract extending above and around the shelf and the sleeve is in the form of a receptacle having a flange adapted to ride on the shelf as the pin is moved relative to the wing to adjust the height of the proximal sections of the associated chin support.
14. A universally adjustable cervical collar comprising:
- a) a generally U-shaped base having a front joined to left and right rearwardly extending wings,
- b) an elongated chin piece having two ends,
- c) a pair of generally planar chin supports, each chin support being pivotally connected at a distal end to a respective wing and at the other end to a respective end of the chin piece, and
- d) a latch individually connected between each associated wing and chin support and arranged to allow each chin support to be selectively raised and lowered and inclined relative to the vertical.
15. The collar of claim 14 in which the latch is arranged to lock the chin piece in a selected position.
16. The collar of claim 15 wherein each chin support defines an upper and lower proximal section with the associated chin support being pivotally connected between the upper proximal sections of the chin supports.
17. The collar of claim 16 wherein the latch comprises a curved slot in each wing with the curve forming a sector of a circle having a center at the respective pivot axis of the chin support, a track adjacent the slot and a locking pin carried by each chin support, the locking pin being moveable within the slot and arranged to selectively engage the track to lock each chin support in a selected position relative to the associated wing.
18. The collar of claim 17 wherein each chin support is located inwardly of its associate wing.
Type: Application
Filed: Jun 27, 2017
Publication Date: Oct 12, 2017
Inventors: Thomas T. HAIDER (Santa Fe Springs, CA), Chin-Chuan WANG (Longin Taichung)
Application Number: 15/634,687