US1316394A - Planoghapirco - Google Patents

Description

J. A. E. SELLAR. PRESSURE SYRINGE AND SUBCUTAN-EOUS' NEEDLE;

APPLICATION FILED OCT- 271.1917- '1,316,394. 4 Pa1 ;entedSept.16,1919, I

'ruu'mm mam PLANnnRAPu'cm, WASHINGTON. Ix C.

* QFFIQEJ mo n AXEESELLAR, "or nvnnnm'r, tt nssnonnsn'r rs,AssIeNon. i'o "rfinl FAICHNEY coMrAnY, inc gaoonronn'rlon' on MASSACHUSETTS.

\ j J rnnssnnn-synnven Ann snnonmnn'ons NEE L T (222 Mam iamy eommg 7 Be a. know thatL JOH A. sens,

, citizen of the United States, residjngat Everett, in the, county of Middlesex, and

State ofiMassaehusetts, have invented new and useful Improvements in Pressure Syr inges and Subcutaneous Needles, of which the following isva specification. 1

Thisrinvention relates toa prussure syringe and (subcutaneous, needle.

The. object of the inventlon is to, provide a a pressure syringe and sulbcutaneous needle cocmhlned and COIIIPI'lSlIlg a serum onflurd container which will not leak, whiehJwill be ahsolutelyxsealed and which can be rendered sterile andu freeafrom contamina{ tion,.,but which will be readily adaptalole for use by the application of direct pressure upon the pistonlof theisyringe witholl' any danger or possibility of the V fingerslor of any extraneous or contaminating material coming in contactwith the sealing medium or the contents of the container. j

The object of the'invention is further to provide a device i-of the ehara'cter set forth,

which "is entirely free from anyipossibility of corrosion or climatic orlchemicalchanges. The mventlon. ,CQIlSlSts 1n. an-1mproved container constitutingasyringe andin the particular manner in which the neck of the container is sealed by means of 11a stopper which, while heing per fectly tightso that i no foreign matter can get into the barrel of-the container and contaminate the, serum or fluid containedtherein, still can he: imme diatelyyejected by hydraulic or other pres sure hy means of the piston. V

V The 'nvention flll'tllGPCOIlSlSl'zS the conin L struction-of the hub towwhich a hypodermic needle is. fastened and in the,,means for connectingthe hub tothe containers.

i The invention-v finally consists in the com hination and arrangement of parts set forth in the following specification and particularly pointed outin the claims thereof.

Referring to the drawings: 3 Figure 1 is a sectional; s am-sf my improve syringe ands-needle: v

*Fig. 2 is an enlarged detail section of the neck gportion oh the y syringe.

' Fig. 3 1s an end elevation of t, Fig. 4 is an enlarged side elevation of. the needle and its hub. v

Fig, {5 section taken of at one end thereof in anec'k 9, preferably I Specification of Lettersl'atelit. pat nt s ptflg, 1 Applic ationhfiled Qctober 27,1917.}.ser a1 1e.1 8,+6,-- ii ii of less diameter than that'oftheloarrel16 V and having at its fou ter end, one or' more annular flanges 10 thereon. The neck 9 is provided with a passage extending there through, aportion :11 of whichhas parallel sides while the outer end 12 of said passage is itapered, or the same may have straight l walls or a small portion of thehole m'ay;

be groundout larger than the body portion,

of the hole, so that saidpassage, while be: ing illustrated in the drawings as having parallelsides with the outer end 12 of the passage tapered, may have parallel sides throughout or may have parallel'sides a portion of the passage made of smaller dialmeter than the rest of, the assageso to] forma shoulder. I a A stopper ,13 fits lthe' taper 12 of the passage'and is forced thereinto' a slight pressure; 1 Said stopper is preferably formedfof, cork or other material of im- A 1 glass or any other, suitahlematerial and shouldhe treated with a luloricatingcom pound, ,such as paraflin, glycerin 'or any perviousistructure, but it"maylbe made of. i

other lubricant capable of heingsterilized. (Thevneedle 14 is fast toja 1111101715 which has annular flanges, 16 17 a on its periph I-I very'. The end of saidhuh opposite that to "which the needle 14;, is-fastened is tapered at't18, saidfend beingpreferahly concavely tapered, The hub 15 provided with slots 19 constituting lateral openings which extend into theduot-QQ of said hub, but lateral openings are not necessarily formed rl as slotsbut may be "formed; asja k hole or a plurality of holes eXtendIngtrans-i ,Yersely of; the hub and into the duet, ,Said

hulb 15 is connectedtothe neck'9 of the syringe by a tubular member 21, wh ch 1s preferably for ed of rnloher and the inside

Images