Syringe

Dec. 13, 1938.

2,139,653

F. R. BELFRAGE

SYRINGE '/

Filed May 11, 1936

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Patented Dec. 13, 1938

2,139,653

UNITED STATES PATENT OFFICE

2,139,653 SYRINGE Frank R. Belfrage, Kansas City, Mo. Application May 11, 1936, Serial No. 79,070 1 Claim. (Cl. 128—241)

This invention relates to a syringe, and particularly to vaginal syringe adapted to be inserted into the cavity of the body for the purpose of conveying thereto a liquid or vapor for bene5 flcial purposes.

The principal object of this invention is the provision of a syringe so constructed as to direct the cleansing fluid in such a manner as to subject the walls of the cavity being treated to a TO thorough contact with the fluid.

Another object of this invention is the provision of a syringe having a barrel with recesses formed in the outer surface thereof and means for introducing fluid into said recesses when the 45 syringe is in position in the cavity, whereby the fluid is substantially equally distributed over the walls of the cavity.

Other objects, of the invention are simplicity and economy of construction, ease and efficiency 20 of operation and adaptability to various uses.

With these general objects, as well as others which will appear during the course of the specification, in view, reference will now be had to the drawing, wherein:

Figure 1 is an elevational view of a syringe embodying this invention.

Fig. 2 is a longitudinal, sectional view, taken on line If—II of Fig. 1.

Fig. 3 is an end elevation of the syringe.

Fig. 4 is a cross sectional view, taken on line IV—IV of Fig. 2.

Fig. 5 is an inside elevational view of the tip detached.

Fig. 6 is an elevation of the perforated washer. 35 Fig. 7 is an elevational view of a modified form of the barrel.

Fig. 8 is an enlarged, sectional view, taken on line VIII—VIII of Fig. 7, and,

Fig. 9 is a fragmentary, elevational view of a 40 modified form of the barrel, in which each of the discharge perforations are provided with an individual recess in the surface of the barrel.

Throughout the several views like reference characters designate similar parts, and the nu45 meral ID indicates a syringe barrel of substantially cylindrical form provided with an enlarged, bell-shaped end 12, which is internally threaded at 14. The outer end of the barrel is constructed with an open end 16 which is provided with 50 internal threads 18. Openings 20 formed through the wall of barrel f 6 communicate with the inner chamber 22 so as to permit fluids used in the treating operation to pass from the cavity to 22 where it is conveyed to the outlet, as hereinafter 55 set forth.

Removably carried by barrel 10, is a hollow handle 24, provided at its open end with threads 2S which engage threads 14. It will be observed that openings 20 are arranged in series which extend substantially parallel with the axis of the barrel. Between these series of openings, bores 2S are formed longitudinally in the wall of the barrel and serve to conduct the incoming fluid to the point of distribution. These bores extend entirely through said barrel and communicate 10 with the inlet ports 30, which in turn communicates with the annular groove 32 that is formed in the inner end of handle 24.

In order to direct the fluid from 26 to the several bores 28, a washer 34 is positioned be- rl!5 tween the end of the hollow handle and the ends of channels 28. Openings 36, adapted to register with bores 28, serve to conduct the fluid from 32 to the respective bores. It will be observed that the inner chamber 22 communicates 20 with outlet 38 through washer 34 and the recess 40 formed in the handle. This outlet 38 comprises a hollow stem 42 which is adapted to receive a rubber waste tube, not here shown. Also, inlet port 30 comprises a hollow stem 44 that is 25 corrugated on its outside to receive a flexible tube such as is commonly used with a fountain syringe.

A tip 46, having a concentrically disposed, threaded boss 48, is adapted to be securely posi- 30 tioned in the outer end of barrel 10, with its outer periphery flush with the outer contour of the barrel. For convenience of insertion, this tip is rounded on its forward end. An annular groove 58, formed in the inner face of the tip, 35 is adapted to register with the outer ends of bores 28. Tip 46 is provided with an axially disposed opening 52 communicating with chamber 22, and a series of tubular openings 54 communicating with annular recess 58. These tu- 40 bular openings are preferably positioned in a circle concentric with the axis of the barrel and so directed relative thereto as to intersect at a common point on the extended axis of the barrel when the axes of said tubular openings are 45 prolonged.

One of the principal features of this invention is to produce a structure wherein the treating fluid is directed, as nearly as possible, uniformly to all parts of the inner wall of the cavity being 50 treated, and it is for this purpose that the recesses 56 are formed in the outer face of the barrel wall.

These recesses are preferably placed longitudinally of the barrel directly above bores 28. Each 55

2,139,653 channel communicates with its adjacent recess through perforations 58 which are distributed in such a manner as to insure a proper flow of the treating fluid. It is the object of recesses 56 to 5 maintain the wall of the cavity being treated away from the perforations 58. All of said wall spanning said recess will be contacted by said fluid and furthermore, said fluid will tend to move out from said recess in sheet form from each side 10 of the recess, thereby insuring the greatest possible contact with the walls of the cavity.

Fluid is also delivered through tubular openings 54 at the end of the barrel to treat tissues at the end of the cavity. All fluids so introduced will 15 eventually be discharged through openings 20 and 54 to chamber 22 through washer 34 into recess 40, thence through the outlet port 38. A dam 60 of any suitable form is adapted to snugly engage the outer wall of barrel 10 and to be adjusted 20 thereon to limit the insertion of the barrel and to prevent the discharge of the spent fluid.

The modified form of the barrel as shown in Figs. 7 and 8 provides for a combination of individual recesses 62, with elongated recesses 64 25 which communicate with a plurality of perforations 58. It will be noted that the recesses 64 are disposed in the cylindrical zones intermediate the ends of adjacent openings 20. This particular structure is intended to control the flow of 30 fluid in such a manner as to obtain uniform distribution thereof. In Fig. 9 the recesses 66 are similar to those shown at 62, thereby providing each perforation 58 with an individual distributing recess.