USRE4080E - John g - Google Patents

Description

J ward f cured. to said opening by I' round post, K, having,

waited ,States A JOHNCr. HADFIELD,.OF CINCINNATI, CHIC.

Lettera Patent No. 72,631, dated December 24,

1867,; lreissue No. 4,080, lated July 26, 1870.

Annmovrzaunvr ne mnmcsr. vacuum graan-nys.

The Schedule referred to in theseV Letters Patent and making part of the same.

I, JOHN G. HADFIELD, M.D., of Cincinnati, Hamilton county, Ohio, have invented new and useful Im-` ements in Medical Vacuum Apparatus, of which the following is a specification.

Nature mul Objects of the yinvention.

My invention consists iu improvements iu apparatus employed to relieve a part or all of the human body of atmospheric pressure, for medical or curative purposes. General Description with Reference to the Draw-ing.

Figure 1 is a partly-sectionzed side elevation of vacuum-chambers, designed for the entire body and a limb respectively, both being operated by a `single exhuist-pump.'

Figure 2 is a horizontal section portion of the body-chamber.

Figure 3 is a horizontal section, showing thelower pump-valve and two couplings for separate chambers.

Figure 4 is a detached view of the hand-rest. of the limb-chamber. l

A represents a box or. receptacle adapted to rcceive the entire person in asitting posture, the same being au irregular semi-conoldal box, preferably mounted ou casters B, and capable of being -thrown entirely or through the rear partially open at the back by opening a door, C.

Thisdoor is, on one side, connect-ed to the box by two hinges, of which one, D, is shown, a thumb-screw, E, on each hinge, enabling the door to be adjustedto-l or from the box, so as to secure a proper airtight fit.

l The side of the door opposite to the hinges is provided with-two hooks, F F', engaging over two bolts, G. G', which, being screwed, more or less, iuto'lugs HV H' onthe box, bring the door tightly against the latter.

box A is snrmounted by an elevated portion or neck, 1, whose oblique opening, i, for the face of the ent, hasv a lip or sleeve, J, of India rubber, se-

being passcd over a ilanged 11 The corner of the box nearest the hinges has a near its lower portion, a suc `ocasion of steps lar-notches, k, for the reception of -a I, of a chair, L, having a sleeve, M, which incloses e upper portion of the post, upon which it is capable 0f sliding;e @.slwf* The foot l, ing plaoedlrlgher or loweron the steps h, .supports the chair at a. greater or less'elevatiou, to accommodate-,the patient. The ohairmay be swung in a Horizontal plane about the post as a center, for the presently explained. The' chair may have I hinged foot-res l', for children. 4 f

'For the use adults," I provide a-footrest, N,

which has a sleeve, 0, to inclose and slide upon afoot,

I, to be um on either one-ufo serba of steps.

p, on a post, I, afxed within the box near its front portion.' v

Q isa nozzle, ient part, and receives a exhaust.

The tube R, instead of being connected directly with the pump, as heretofore, enters a manifold, S, through one of a. series of faucets, 'l T', each'of which may have its proper tube connected witha separate vacuum-chamber.

One such chamber is shown at U, being a hollow cylinder, provided with a flexible lip or slceve,'V, a series of opposite orices, Iu u', to receive the pivots a;Y -x' of a hollow hand-rest, composed of two tubes, X X', sliding one within the other,aud held in their extended position by means of a spiral spring, Y.

The orifices u u' are covered by sheaths Z Z', to prevent leakage.

The manifold S contains a valve-chamber, S', having a valve, s, opening outward or toward the pump, and which forms, in effect, the induction-valve 0f the pump.

This valve is readily accessible by simply unscrewing the manifold S. This arrangement is more convenient than where the induction-valve is wit-hin the pump.

The back edge of the receptacle has a gasket, lV, of India rubber, to enable the door to be closed air-tight against it. The screws G G enable the setting up or adjusting of the door, to preserve an equal bearing of every part of it againstthe box. f

Operation.

'lhe operation is as follows:

For body treatment, the chair andl foot-rest LN are respectively adjusted to the properl heights, and the former being swung outside of the receptacle, the patient takes his seat thereon, and is swung around within the receptacle until the chair assumes the posiliu seen in fig. 1.

which enters the box at any convenflexible tube, B., from the The patient then places his face so as to occupy the v sleeve J, andthe of the hooks hausted in the usual way.

The adjustable devices D E F l" G G H H enable the instrument to be used with a great variety of patients. By removing the hand-rest X X' x Y entirely, the receptacle U may be used for the leg. .A cushion may be inserted in the bottom of the said receptacle instead of therest aforesaid. f

Wbencornpared with previous devices, the hereindescribed construction` ot' a vacuum-chamber is believed to a'ord .several entirely new and very useful advantages. y

For example, my receiver, by enabling the inclosure of all parte of the person, leaving onlytlre breathing door being shut, is secured by means F F' and screws G G', and the air exhinges, and suitable fasteni closed b'y the d organs exposed, enables its useful action to be extended, when desired, to the 'head of the patient. eqnja'llywith the rest of thel body, and frees it from any injurious 'tendency to ciiush the head and vertebral column down, and crowd the viscera upon each other.` ``It is also free from any tendency toglraw the circulation from'y the head.

Claims.-

I clailn herein as new and of n1y invention- 1. A medical vacuumchamber made in twcror more parts, with elastic packing, eombinedwit-h one or more ngs that allow pressure to be applied on both sides of the door. or other hinged part.

'2. The medical vacuum-chamber A, having the elevated neckI, with fltce-opening fi, and an open rear, f h r C and the fastening devices, as 'set ort the case, in the manner Iand for the purpose set forth.

4. Such a chair, when adjustable in height upon its axis, substantially as set forth.

, 5. Theparts DEFFGGHH', alents, by which the door is made to bear with ank equal and air-tight pressure at every part.-

6. In the described combination, the adjustable footrestN and notched post P, as setforth.

7. The limb-receptacles U u, when combined with the adj nstable handrest X X' :u Y.

In testimony of which invention I hereunto set my hand.

JOHNI'G. HADEIELQYM.' D.v

Witnesses:

GEO. H. KNIGHT, WILLlAM BAUER.

3. The chair L, capable of -being swung out or into or their eqnivt

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