Blood flow restriction exercise strap

Abstract

A blood flow restriction (BFR) exercise strap. The strap is configured with a coupling at a first end of an elastic band. A second free end of the band is releasably retained in the coupling by a lever arm that is biased in a closed configuration against a plurality of teeth carried on an interior surface of the base. The band has graduated indicia carried thereon for determining a constriction level applied by the band to a limb of the user. The graduated indicia allow the user to set a desired level of constriction on each of a left limb and a right limb to provide the user to develop bilateral symmetry of targeted muscle groups of the limbs.

Claims

1. A blood flow restriction (“BFR”) exercise strap, comprising: a coupling comprising: a base; a left and a right sidewall extending upwardly from opposite sides of the base and comprising a journaled hole defined at an intermediate portion thereof; a slot laterally disposed at an interior end of the base between the left and the right sidewall; a stop extending inwardly from at least one of the left and the right sidewall; a torsion spring comprising: a first arm urged in abutment with the stop; and a second arm urged in abutment with a juncture of the at least one of the left and the right sidewall and the base; and a lever pivotally disposed between the left and the right sidewall, the lever comprising: a barrel having a pivot pin protruding from a left and a right end thereof, the pivot pin received in the journaled hole of the left and the right sidewall; and a lever arm extending from the barrel, the lever arm biased to a closed position via the torsion spring; and a resilient elastic band having a first end and a second end, wherein the first end is attached to the coupling via the slot and the second end is adapted to be received through an exterior end of the coupling and to be secured by the lever arm.

2. The BFR exercise strap of claim 1, further comprising: a plurality of teeth defined in the base at an intermediate portion thereof, wherein the lever arm is configured to urge the band against the plurality of teeth to retain the band within the coupling.

3. The BFR exercise strap of claim 1, wherein a loop of the torsion spring is carried on the pivot pin.

4. The BFR exercise strap of claim 1, further comprising: graduated indicia carried on at least one surface of the band, the graduated indicia providing a visual reference of a constriction of the band when applied to a limb of a user.

5. The BFR exercise strap of claim 4, further comprising: a patch of hook material applied to the second end of the band; and a corresponding patch of pile material applied to an intermediate portion of the band.

6. A coupling for a blood flow restriction (“BFR”) exercise strap, comprising: a base; a left and a right sidewall extending upwardly from opposed sides of the base; a slot defined across an interior end of the base between the left and the right sidewall; a stop extending inwardly from at least one of the left and the right sidewall; a plurality of teeth disposed on an intermediate portion of the base between the left and the right sidewall; a lever arm pivotally disposed between the left and the right sidewall; and a torsion spring to bias the lever arm in a closed position against the base, the torsion spring red in abutment with the stop and a second arm urged in abutment with a juncture of the at least one of the left and the right sidewall and the base.

7. The coupling of claim 6, further comprising: a journaled hole defined at an intermediate portion of the left and the right sidewall; and a barrel at an end of the lever arm having a pivot pin protruding from a left and a right end of the barrel, wherein the pivot pin is received in the journaled hole.

8. The coupling of claim 7, wherein a loop of the torsion spring is carried on the pivot pin.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a perspective view of the invention in use.

(2) FIG. 2 is a plan view of the strap and buckle of the invention.

(3) FIG. 3 is a perspective view of the base unit of the invention.

(4) FIG. 4 is a perspective view of the buckle unit of the invention.

(5) FIG. 5 is a cross-sectional view taken on line 5-5 of FIG. 1.

(6) FIG. 6 is a cross-sectional view taken on line 6-6 of FIG. 4.

DETAILED DESCRIPTION OF THE INVENTION

(7) The following detailed description is of the best currently contemplated modes of carrying out exemplary embodiments of the invention. The description is not to be taken in a limiting sense, but is made merely for the purpose of illustrating the general principles of the invention, since the scope of the invention is best defined by the appended claims.

(8) Broadly, embodiments of the present invention an elastic strap and a coupling to allow an user to readily apply and release a strap to their limbs when conducting blood flow restriction (BFR) exercise regimens.

(9) As seen in reference to FIG. 1, a BFR strap 10 is applied to the wearer's limbs to at least partially occlude blood flow to the limb while exercising. The BFR strap includes a band 14 formed of a resilient elastic material having a length to circumscribe a selected location on a wearer's limbs 11, such as the biceps and triceps of the upper arm, muscle groups of the upper legs, or even the lower legs.

(10) As seen in reference to FIG. 2, the BFR strap 10 has a first end with a coupling 12 attached, such as via a stitch, to secure the coupling to the band 14. The strap 10 has a second, free end that is routed through the coupling 12 to secure the strap 10 about the user's limb 11.

(11) The BFR strap 10 may also include a hook and pile fastener 18 to secure the free end of the band 14 when applied to the user's limb 11. A patch of a loop material 18a may be positioned along the band 14 intermediate the first end and the second end. A cooperating patch of hook material 18b may be applied to the free end of the band 14.

(12) At least an exterior surface of the band 14 may carry graduated indicia 20 designating a tightness or constriction level of the BFR strap 10 when it is applied to the user's limb 11. For BFR training regimens, it is desirable to obtain bilateral symmetry in the development of the targeted muscle groups. With the graduated indicia 20, the user can ensure that an even constriction level is achieved between a left limb 11 and a right limb.

(13) As seen in reference to FIGS. 3-5, the coupling 12 includes a base 12a formed as a substantially flat plate. A left and a right sidewall 12b protrude upwardly from the base 12a. A slot 12c is defined at an inner end of the base 12a interposed between the left and the right sidewall 12b. A plurality of teeth, or ridges 12d protrude along an intermediate portion of the base 12a between the left and right sidewalls 12b. A journal hole 12e is defined at an upper end of the left and the right sidewalls 12b at an intermediate portion thereof. The journaled holes 12e are dimensioned to pivotally attach a lever 16 to the coupling 12. A stop 12f, or pin, protrudes inwardly along an upper edge of at least one of the left and the right sidewalls 12b.

(14) The lever 16 may include a lever arm 16a extending from a lever barrel 16b. The lever 16 is biased in a closed, strap engaging position via a torsion spring 16c. As best seen in reference to FIGS. 5 and 6, a first leg 16d of the torsion spring 16c has a length to engage with the pin 12f. A loop of the torsion spring 16c may be carried by a pivot shaft 16e extending from the ends of the barrel 16b. The pivot shaft 16e is received in the journaled holes 12e. A second leg 16f of the torsion spring 16c is retained along the junction of the base 12a and one of the left or the right sidewalls 12b.

(15) As best seen in reference to FIG. 4, the first end of the band 14 is received through the slot 12c and may be formed in a loop and secured to an inner portion of the band 14 via a stitch.

(16) Referring again to FIG. 5, in use the band 14 is routed through the coupling 16 by passing the free end of the band 14 through an outer end of the coupling 16 and between the base 12a, the left and the right sidewalls 12b, and beneath the barrel 16b and lever arm 16a. As indicated, the torsion spring 16c biases the lever arm 16 to the closed position to urge the band 14 against the teeth 12d.

(17) The BFR strap 10 may initially be formed in a loop and positioned at the desired location to encircle the user's limb 11. Once positioned, the user may pull on the free end of the band 14 to cinch the loop about the user's limb 11. When the user obtains the desired constriction, they would note the mark of the graduated indicia 20 at the interior end of the coupling 16 so that they can apply the BFR strap 10 to their other limb 11 to the desired tightness. The patch 18b may then be secured to the pile portion 18a to secure the free end of the band 14.

(18) To release the BFR strap 10 the user simply releases the patch 18b from the pile portion 18a and lifts the band 14 so that the lever arm 16a is urged upwardly. The elasticity of the band 14 allows the user to release the tension of the band 14 and allow the band 14 to be retracted through the coupling 16. As will be appreciated from the foregoing disclosure, the BFR strap 10 of the present invention allows for single handed operation for application and removal of the BFR strap 10, while providing graduated indicia for obtaining a desired constriction, providing better symmetry in the development of the targeted muscle groups.

(19) It should be understood, of course, that the foregoing relates to exemplary embodiments of the invention and that modifications may be made without departing from the spirit and scope of the invention as set forth in the following claims.