US2393576A - Surgical apparatus - Google Patents

Description

Jan; 22, 1946. G. J. THOMAS Y SURGICAL APPARATUS Filed March 25, 1943 Patentecl Jan. 22, 1946 UNITED STATES PATENT OFFICE 2,393,576 SURGICAL APPARATUS George J. Thomas, Pittsburgh, Pa.

Application March 25, 1943, Serial No. 480,441

1 Claim.

This invention relates generally to surgical apparatus and more specifically to apparatus for the injection of fluids into the body.

This invention is a continuation in part of application Serial No. 255,625, filed February 10,

1939, pursuant to which Letters Patent No.

resuscitation of a patient undergoing an operation or the injection of fluids for the treatment of patients.

The principal object of this invention is the provision of surgical apparatus forinjecting a plurality of fluids into the body.

Another object is the provision of an improved surgical apparatus for injecting accurate quantities of a pluraiity of fluids into the body.

Another object is the provision of improved apparatus for supporting a syringe and a reservoir for surgical use in injecting fluids into the body and which permits continuous use without interruption.

Other objects together with their advantages appear in the following description and claim. In the accompanying drawing two practical embodiments illustrating the principles of this invention are shown wherein:

Fig. 1 is a perspective view of the complete apparatus.

Fig. 2 is a side elevation of the stand.

Fg. 3 is a perspective view of the syringe supporting bracket.

Fig. 4 is a perspectiVe view of a stand arranged to support a single syringe.

Referring to Figs. 1 and 2 of the drawing, lu represents the supporting stand of the injection apparatus which is of prime importance in the operating technic thereof, This stand is preferably made of a metal, such as a chrome steel or chromium plated brass or other suitable material that may be highly polished and will withstand repeated steriiization without corrosion. It is also made strong and rugged to withstand rough treatment without injury to the more de1icate parts of the apparatus which it supports. This stand comprises a base ll having a table Clamp I2 formed integral therewith and is provided with a thumb set screw I3 permitting it to be readi1y secured or removed from a surgical table which materially facilitates the handling of the apparatus.

The top surface of the base i I may be provided With one or more pockets l4 arranged to receive the base of the reservoirs or containers l5. A plurality of tapered holes are formed in the base and spaced in triangular relation about the pockets I4 for receiving the guard pins ls therein. These pins are preferabiy driven in place and they guard against accidental dislodgment of the reservoirs.

On the side opposite to the c1amp IZ the base is provided with an upstanding collar l1 having a threaded bore for receiving the threaded end of the stand post l8. This post is positioned on the opposite side of the base from the clamp l2 so that it is adjacent the patient to ward oii any uncalculated blow or movement and thus protect the apparatus. It will be noted from Fig. 2 that this heavy post is considerab1y beyond the pockets l4 and it is well suited for this purpose.

The post I8 is provided with an upper section 9 of reduced diameter, forming the shoulder 20 which is located well above the reservoirs I5. Thus any bracket removably secured on the post 9, such as the syringe supporting bracket 2i, upon becoming loose will slide down until it engages the shoulder 20 and thus prevent the apparatus carried by the bracket and the reservoirs from becoming broken or otherwise damaged by an impact therebetween.

The-Syringe supporting bracket 2| is H-shaped and the cross member 22 is provided with an ntegra1 depending cy1indrical portion 23 having a hole 24 passing longitudinaily therethrough to s1idab1y receive the upper post l9 of the stand. A tapped hole is cut through the back of the wall of the cylindrical portion 23 adjacent the lower end thereof to receive the threaded set screw 25. Thetapped hole in the portion 23 is preferably adjaceht the lower end of the latter and at the opposite side of the post l9 from the front of the bracket 2l, the left in Fig. 1, and preferably the portion 23 fits the post l9 with sufi'icient looseness so that, when the screw 25 is tightened against the post, the bracket is ti1ted downward1y and forwardly, or to the left in Fig. 1.

The front and rear arms 26 and 21 of the H-shaped bracket extend outwardly and downwardiy with upturned flanges 28 on the ends thereoi. The front arms 26 may be formed with a single bend as indicated at 29 to produce the downwardfi projection, while the bends 39 in the rear arms 28 are preferably of less extent so that the sockets 32 carried by the front arms are at a lower elevation than the sockets 32 carried by the rear arms. Thus the syringes supported by the bracket 2l are given a definite inclination to the front to permit any air acci dentally entrapped in the apparatus to collect in the back of the syringes.

A spring clip 32 is secured to each of the arms 26 and 21 and is held against turning by the upstanding fianges 28. Two smaller clips 33 are secured to the front edge of the front arms 26 for supporting the tubes or needles when not in use. The yrtnge s 3d nd 35 are preferably of the glass type having graduated barrels and glass plungers. A three way valve 36 is fitted on the end of each syringe. Each valve is provided with a tubular line 31 extending into its respective reservoir to supply the syringes with fluid. 'Ihe Y tubular lines 38 and 39 connect the valves pt the syringes 34 and 35 respectively with the h-y5odermic needle 40. After a g ene rous supply of the fluids have been placed in the reservoirs and the tubular lines have been filled the apparats is readv for use lt is preierable to employ the open or easily acce ssible 't3pe of reservoir Sothat they Ih ay;be replenishd from time to time without interrupting proc ess'oi the treatment.

The needl e structure' tq compriss an ordinar-y tubular stem. ll having a puncturin tip Qu .er+d The lz z e J l is secured in a socket in the niaifld'42. The butt end is ;conneoted b5 two passageway s to s'ockets in the other end ojthe manifld intojvhich the tubular hub stiuctures fi3 are fastened. The outer endsofjthe hub structuresfi3 are provided with sockets adapted to receive the nds of the glass nippl es 4A. 'Ihey are also provided with heads for directly receiving the rubber tubs 38 and 39 which may be slipped thereover. As shown in .jig.l the tubular lines 38 and 33 are s lipped over the endsof tlre jglass nipplels 44. Each of the parts making up this syringe support.may be readily dismantled, cleaned and sterilized, which is an important factor in surgical apparatus., 4 e. e

In place of emplo&ing both syringes 34 and 35 it is sometimes desira;ble to, use only onesyr nge fr internttent'iniections of a d1ugsuch as pentothal intravenously with a continuous supply of deXtrose solution from an elevated reservoir through the single needle 40. T he pressure required to inject the drug interrupts the supply of the solution from'the elevatedreservoir, 7 In such instances a upport for only one syringe is needed. Again triple injection may be employed bythe use of spinal injection which is sometimes supp1eniented with the intravenous injection of pentothl and"dextrose. The;triple injection of 'these*drugs requiresthe use of the double syringe support as*sh0wn inFigs. 1 to 3 a;nd the needle 40.

The single syringe support shown in Fig. 4

is simplified and maybe employecl with the needle 40 for a double injection as previously described or with the single manif0ld needle shown at 45 in Fig, 4. The clamp l2 with the thumb screw 13 is secured to a portion 46 of an operating table. The base l l is provided with a pocket or well 14 having a continuous wall for receiving the reservoir l5. In place of the rod IS being stationary it is slidabl3 a djustahle through the collar l l and may be fixed t-any deisired position by the thumb s,crew 25. A shoulcler 20 on the rod 9 is for the purpose of limitn'g the down- Ward movement of the bracket 2|. The single hraol etg2l is fixed to the top of the rod IS in such a manner that it slopes downwardly to the forward en'd Syringe clips 32 are secured to the to sur face of the bracket 2| to hold the glass syringe 34 'firmly while the operator manipu'l'ates the plunger extending beyond the rear end of the bracket.p As previously described the 'front or the s3r is coneote'dgto the three way 'v eiv'e '3e which has one .ccm'nejctin th1jig htfie tube 3': to the 'rs'ervoir l5"'ajrdr1tfir{:thrction 'throgh the tu'be 38 to the "glass nipple 44 that is connected "to the nedle, "4,5. In e n re- "spects the sine1e "syringe support hs the same features as the double support and is prefera'bly horizontalblahe with the hip-ple end of th"l5podermic syringe at the lowerr nost point:to prevent air :entrapped therein fi" on 'Joeir i'g'injet5ted through the connection and the 'liollow edle to the patient. GEORGE J. THOMAS.

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