US2249320A - Sphygmomanometer - Google Patents

Description

July 15, 1941. c, MCGEHEE 2,249,320

SPHYGMOMANOMETER Filed Aug. 13, 1940 E C. Ma Ge/zee,

Patented July 15, 1941 UNITED-STAT PETS Al'f NT OFFI3E1QI.I'5

srHYMoMANoMErER Edward Charles McGehe'e, Ashland, .Ky. Application August 13, 1940iSeriaPlloi 352,464

5 Claims. (01. 1 842.05)

This invention relates to a tightening device for use in conjunction with a sphygmomanometer,

and it consists in the constructions, arrangements and combinations herein described and claimed.

It is the cardinal object of the invention to provide a tightening device of novel construction in which the slack in the pressure band may be quickly taken up, and in which the band may be readily secured in an adjusted position upon a limb or extremity of a patient.

It is a specific object of the invention to provide a novel band locking means, which may also be employed in rotating the roll upon which excessive slack in the band is accommodated.

It is a still further object of the invention to provide a simple construction of tightening device, of few parts and which may be manufactured at a low cost, yet efficient in operation.

Additional objects, advantages and features of invention will be apparent from the following description considered in conjunction with the accompanying drawing, wherein Figure 1 is a side elevation of my tightening device applied to a limb or extremity of a patient.

Figure 2 is a cross section on the line 2-2 of Figure 1.

Figure 3 is an enlarged sectional View through the longitudinal axis of the take-up roll.

Figure 4 is a cross section on the line 44 of Figure 3.

In carrying out the invention, I make use of a rod or roll of any suitable light, solid material of sufficient length and diameter for the band to glide smoothly.

The rod I0 is provided with a slot I! extending longitudinally thereof and stopping inwardly of respective ends of the rod. The slot II is of sufiicient length to allow clearance for longitudinal adjustment of a band or sleeve l2 along the slot, as will be apparent as the description proceeds.

One end of the rod I0 is provided with a diagonally extended bore I3, as clearly shown in Figure 3, the bore intersecting the slot H for a short distance, and preferably at the point of intersection of the bore and slot, or through sides of the rod, the side walls of the slot are slightly cut away in a downward direction, as indicated at M. The cut-away portions allow for aslight packing of the adjacent edges of the band and therewithin when the rod I8 is moved into securing position.

The rod I is provided slidably arranged within the bore l3 and at its ends there are heads so designed that they permit the rod l5 to slide freely in the bore of the rod l0. These heads may be a part of or secured to the rod l5 in any suitable way. However, both of the heads are of such size as to secure the rod within the bore.

In the construction of the band or sleeve [2, use is made of a piece of fabric of any suitable material and of a suitable width and length for the purpose for which it is to be used. This will be governed by the construction and size of the roll I D, as well as the particular use to which the appliance is made. The end portions of the band are connected after insertion through the slot, thus forming a continuous ring. Upon one side of the band l2 there is secured a fabric section I9 by any suitable means, the fastening extending longitudinally the full length of the section l8 and transversely across the ends as indicated at 28. The other longitudinal edge of the section I 8 and band I2 is also secured, as at 2|, these fastenings stopping short of thus forming an opening 22, as shown in Figure 3.

The opening 22 permits the insertion within the pocket thus formed of the usual air-tight rubber bag, indicated at 23, the latter being inflated by a pump indicated generally at 24. Rubber bag is an oblong square.

It will be obvious that the band. l2 may be readily circumferentially adjusted within the slot to position the pocket and enclosed'bag to any desired position upon a patients extremity.

In use, the band 12 is placed over a patients extremity, and the pocket adjusted upon the extremity as desired. The rod I3 is employed now as a handle to rotate the roll l0, causing the band l2 to be wrapped therearound. When the band I 2 has been taken up sufiiciently, the rod I5 is forced downward to overlie the band l2 as shown in Figure 1, causing pressure upon the band between the rod I5 and the roll. The band will thus be secured against unrolling, and'since the bag 23 was inserted in the pocket prior to installation upon the arm of the patient, it is now only necessary to inflate the bag by the pump 24, as is customary. In order to release the band, it is only necessary to withdraw the rod l5, thus freeing the band and permitting unrolling thereof.

While I have shown and specifically described the invention, this is merely illustrative of one construction, and I consider as my own all such modifications in structure as fairly fall within the scope of the appended claims.

I claim:

1. In a device of the character described, a roll having a longitudinally extended slot stopping short of respective ends, an endless band within the slot adapted to encircle a limb of a patient, one end of said roll having a diagonal bore extended inwardly over the slot, a rod slidable through the slot to lie inwardly over the roll for securement of the band wrapped upon the roll and said rod being slidable outwardly from the roll to release said band.

2. The structure of claim 1 in which the band comprises a pocket for retention of an inflatable bag.

3. In a device of the character described, a roll having a longitudinally extended slot stopping short of respective ends, an endless band within the slot adapted to freely encircle a limb of a patient, a bore formed in one end of the roll, said bore extending diagonally inward and intersecting the slot, at headed rod slidable through the bore and operable as a handle for rotating the roll to wrap a portion of the band therearound and slidable through the bore to position the rod in clamping engagement with the Wrapped portion of the band, and said band having a pocket for reception of an inflatable bag.

4. In a device of the character described, a roll having a longitudinally extended slot stopping short of respective ends, an endless band within the slot adapted to encircle a limb of a patient, said roll further having a diagonal bore, handle means in the bore for rotating the roll to wrap a portion of the band thereon, said handle being movable longitudinally inward through the bore of the roll to contact and clamp the hand between the handle and the roll, and said handle having annular enlargements at its ends.

5. The structure of claim 4 in which the band comprises a pocket for retention of an inflatable bag.

EDWARD CHARLES MCGEHEE.

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