Untitled record

G. W. HUBBARD.

SYRINGE FOR ENEMA GIVING PURPOSES.

No. 31,318. Patented Feb. 5, 1861.

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UNITED STATES PATENT OFFICE.

GEO. W. HUBBARD, OF NEW YORK, N. Y.

ENEMA-SYRINGE.

Specification of Letters Patent No. 31,318, dated February 5, 1861.

To dll whom it may concern:

Be it known that I, George W. Hubbard, of the city, county, and State of New York, have invented a new and Improved Syringe 5 for Enema-Giving Purposes; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which—

Figure 1, is a vertical central section of my invention. Fig. 2, a horizontal section of same taken in the line x, x, Fig. 1.

Similar letters of reference indicate corresponding parts in the two figures.

_ The object of this invention is to obtain a simple, efficient, and very portable instrument for enema-giving purposes, and one which will admit of being applied and operated by the patient alone with the greatest 20 facility.

Syringes of this class, those most generally used, are constructed with an elastic or collapsible chamber and a nozzle, the liquid being expelled from the chamber by simply 25 compressing the same. This is a very simple instrument but not by any means an economical one, as the chambers which are of india-rubber soon rupture and the instrument is rendered worthless.

The within described invention is constructed in a very simple manner but which admits of a durable instrument being furnished at a moderate cost, and one it is believed which may be used with greater fa35 cility than the ones previously mentioned.

To, enable those skilled in the art to fully understand and construct my invention I will proceed to describe it.

A, represents a cylinder which may be con40 structed of metal or other rigid substance. This cylinder has a smaller cylinder B, fitted concentrically within it, both cylinders being closed or covered at the top by the same, cap a. The lower ends of the two cylinders are 45 fitted to a base C, by having the lower encl of cylinder B, screw on a semi-spherical chamber b, at the center of the base C, as shown clearly in Fig. 1. The lower ends of both cylinders rest on a circular packing c, of 50 leather or other suitable material placed on the base.

Within the smaller cylinder B, there is placed a piston D, the rod d, of which passes up through the center of cap a. Within the cylinder B, and below the piston D, there 55 is placed a spiral spring E, the lower end of l which rests on the top of the chamber b. I The spring E, has a tendency to keep the piston D, at the upper end of the cylinder as shown in Fig. 1. ₆₀

Within the semispherical chamber b there is placed a ball valve e, which is directly over an opening or passage /, in the base C.

The interior of the cylinder A, is an air chamber which communicates with an open- 65 ing or passage y, in the base, the passage being in communication with an elastic tube F, which is provided with a nozzle 7i, at its encl. . The air chamber communicates with the interior of the smaller cylinder B bv 70 means of a passage i, which extends from the semi-spherical chamber b, through the base C, and has a valve j, at'its outer end opening upward.

The bottom of the base C, has three or 75 more projections 7r, on it to keep the orifice of passage /, above the surface on which the base C, rests or is supported.

The operation is as follows: The patient | places the instrument in an upright posi- 80 tion in a vessel G containing the liquid to be used, inserts the nozzle 7i, into the rectum, and depresses the piston D, within cylinder B, and allows it. to rise by the action of spring E. A reciprocating motion is thus 85 given the piston D, by simply pressing down the plunger each time after being elevated by the spring. The smaller cylinder B, fills as the piston D, rises, the ball valve e, opening upward as the piston ascends. As the 90 piston is forced down the valve e, closes and the liquid in B, is forced through passage i, into the air-chamber or cylinder A, the valve j, opening upward. The liquid passes from the air chamber through the passage p, and 95 through the tube F, and nozzle h. The gravity . of the instrument is sufficient to keep it in proper position while being operated.

The instrument it, will be seen may be 100 placed in a large basin containing the liquid so that any desired quantity may be injected into the system at one operation. This, so far as I am aware is an advantage not at31,318 tending other syringes, the latter requiring to be filled before being used and therefore limited in operation to the capacity of their cylinders or reservoirs.