US2134290A - Pump, syringe, and like appliance for surgical and medical and other purposes - Google Patents

Description

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Oct.l 25, 1938. H H SCHULZ 2,134,290

AND LIKE APPLIANCE FOR SURGICA PUMP, SYRINGE, L

AND MEDICAL AND OTHER PURPOSES Filed Deo. 1.7, 1935 '2 Sheets-Sheetv 2 FlgAl.

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104 /,1 111 ..103 38 FIL? 9 J5 105 Fig. 7- /3 6 1 I A /A/l/./'l? 105 /342 M $1/ W 4M? @MM l Patented Oct. 25, 1938 PUMP, sYRINGE, AND LIKE APPLIAiQroE FOR SURGICAL. AND MEDICAL AND OTHER PUEPosE-s 1 Hans Herbert Schulz, London, England j 'i Application December 17 ,f V1935, serial Nfl.v 54,311

In Great Britain Decemberfl, A1.934 v17 Claims.V (C1. 12s-23.7).v

` This invention relates to syringes and like hand appliances, especially suitable for use for surgical or medical purposes.

It is most desirable in syringes particularly for those intended for medical or surgical use, such as vaginal syringes, that the nozzle end should be of as simple a shape as possible and withouttapsor external valves, that any controls should: be vremote of away from such end, that the instrument should be operable with one hand, and that the rate of discharge should be regulatable` by a valve or the like and not be dependent on hand pressure. Further desiderata are that the instrument should be compact and portable and that in use it should not require anyy attachments to other parts, e. g. pumps.

The main object of the present invention is Yto provide a syringe fullling all thesev desiderata, and whichfurther is of such construction'that it can be manufactured of substanceswhich permit .of the exterior being easily cleaned and sterilized.

According to the present invention a syringe or the like appliance is provided with an inner cyl# inder, surrounded by an outer rubbersleeve,v normally in close proximity therewith, and'atta'ched to the cylinder ina iiuid tight manner, so 'that when fluid is forced through a non-return valve in the cylinder a storage space, formed bythe circumferential extension of therubber sleeve, is lled by liquid. Upon the actuation of a valve providing a variable and controllable aperture the liquid so stored is discharged under. the pressure exerted by the rubber sleeve through a dis,- charge tube and nozzle, but no hand pressure is required on the bulb. The same tube is used for charging the cylinder and for the discharge of the liquid.'

The'valve controlling the outflow is preferably at or near the end of the cylinder opposite to the nozzle end and is preferably of the cone type, and the non-return valve into the contractible storage space is preferably formed by a rubber band.

The syringe is preferably filledY by the pumping action of a piston integralwith or attached to the nozzle.

A case vcan be conveniently constructed for use with the syringe as is hereinafter illustrated, the cap being internally screwed, such screw co-operating rstly with screw threads -on the body of the syringe and subsequently with like threads on the body of the casing. By this method the screwing on of the cap rst presses the nozzle into the syringe, and then iixes the cap on the body of the case. .y k;

fected and dried( In a modication the syringe may be adapted to Y be filled from a tap by tting a member either in substitution for, or in addition to, the nozzle or by the removal of the nozzle. .The pump fitto rely only upontaplling. The syringe and itscontainer .can be constructed almost entirely 'of a phenolic I'condensation product, or likesubstance, andy rubber, so as to be or" very light weight and. readily cleaned disin ting means may be omitted where it is desired i Examples ofapparatus :made according to the invention` will vnow bei more particularly described by reference'to the; accompanying drawings.

y Figurev lis a longitudinal section of a syringe made accordingto'this invention,'th`case being shownfin dotted-lines.' nal sectionof thecase. "Figure 3 is adeta'il sectional view ofxa variant form of ."pump cylinder. Figurel is a'section'al viewv showing a nozzle and removable 'catheter'.andin dotted outline awater tap faucet f or lling'" after thez catheter' has'been removed. Figure 5v is` a sectional view nozzle and removablecatheter also .adapted-` for iilling by a watertap. ,Figure 6 is'asectional View showing an attachment for filling from a tap. Figure 7 is a sectional viewshowing an adjustable fitting. on 'a nozzle, more particularly for use Aas a spray.fFigu1e 8'is a viewl of a detachable nozzlef-and'Fig. 9, a modlfled'form of discharge valve.vv f Y Y `In thevaginal syringe illustrated in Figure' 1 a piston I'with asuction flap valve 2 vmoves in a cylinder 3A by which movement uid can be pumped-'into the cylinder', through the tubular extension f4 vof thevpiston. This' extension may form the socket 4partto which a spigot vpart 5 kis detachably secured, the part 5 terminating in a nozzle ,6, which may befconstructed so as, to be interchangeable'.'1he"spigot part 5 when detached'from the part 4 may be housed in the latter. zle end and pumping may take place'while the two-part arrangement is in its extended position.

'I'he'two-part arrangement-may be dispensed with and the nozzleplaced -on the end of the Figure 2.is alongitudishowing a Charging'of the cylinder 3 is fromthe nozi tubular extension-as shown in Fig. 8. The parts 4 and 5"form the catheter component of a vaginal syringe.

The s'pigottube 5in itsA extended position may have an oblique or angular'setting'with respect to` 'the socket tube 4.` One way of` settingris by a screw union 6a inclined at an a'ngletoV thelon-v gitudinal axisV of the Asocket tube 4. 'l An' overlap connectionasshown in Fig. V1 is provided beseat against whicha rotary valve I4 fits.

tween the two tubes to prevent disconnection.

The pump may have an automatically actuated return stroke effected by, for example, a sleeve 'I of rubber anchored to the piston at one end, and to the end Wall of the cylinder at its other end.

The'barrel or cylinder 3 is Ysurrounded by an elastic Wall 8 which by` circumferential expansion forms a contractile storage 'chamber 9 between the elastic wall and the cylinder wall. The wall 8 is secured in a fluid tight manner at its ends between flanges II Yon the cylinder wall, and flanges I2a on the end covers I2 of the cylinder.

The piston on its discharge stroke forces the fluid from the cylinder through a non-return valve controlled inlet I0 into the storageY chamber. 'I'he non-return valve is shown as a rubber band Illa. Y I

In the cylinder end wall I3 there is a valve I 4a is the valve port and I5 the storage chamber discharge port.

The stem I6 of the valve I4 projects through the end cap I2 of the cylinder and has an index disc I'I and a pin I8 Working in a groove I9 for setting the valve I4. For discharge the valve may be positioned so that its port I4a wholly or partly registers with the storage chamber port I5 whereby the rate of discharge may be regulated.

Instead of a rotary valve a slide or push valve may be used. As shown in Fig. 9, II!! is a'slide or push valve which for discharge is positioned by a sliding movement againsta spring III so that the valve port II2 Wholly or partly registers with the storage chamber port I5.

The valve I4 hasf'a tubular extension I4b through which the fluid on discharge passes to the spigot and socket tubes 4 `and '5 and out throughthe nozzle 6. 'Ihis tubular extension I4b also serves as a centre guide for the piston I.

The appliance is adapted to fit into a small cylindrical container illustrated in Fig. 2 which may be made of a phenolic condensation product or like substance, so that it is protected from bacterial contamination, and the container conceals the nature of the contents. That shown is a two-part container 20, 2I, the part 2| 'having a chamber 22 serving as a holder for a supply of packets or capsules of any desired substance e. g., an antiseptic. has-one component 23 of a screw union, the

. other component 24 of whichvis on one end-cap of the cylinder so that theV appliance is held from movement within the container. The

4component 23 may be common to both the component 24 and a component 25 on the part 2I of the container. f

n In the modification shown by Fig. 3 the piston is solid andthe tubular extension I4b serves as a suction tube,jthe fluid passing into the cylinder through a suction valve I4c consisting of a rubber band.

The cylinder or the piston and telescopic arrangement may be reciprocated or pulsated for pumping the fluid. 1 Whenthe cylinder is pulsated or reciprocated the nozzle end of the telescopic construction may be held against the bottom of a bowl of liquid.

An-V intermediate chamber 'similar' Lto that shown. by I B4 in Fig. 6V may be provided in the Vdischarge passage in which disinfectant tablets may be inserted. C 4 shows a detachable nozzle vcomponent I 00,so Vthat after the removalthereof the'll- The other part 20 `the pump fitting means may be omitted.

Fig. 7 shows an adjustable fitting I04a. whereby .the nozzleopenings |05 may be Aregulated so as toprovide a regulatable discharge.

Apparatus according to the present invention is Well suited for manufacturing by moulding processes.

vWhat I! claim istl. A syringeof the kindreferred to comprising a filling tube which acts also as a discharge tube, an inner rigid cylinder or barrel, an out- .er Velastic sleeve ynormally in close proximity therewith andr attached thereto in a uid tight manner so as to form a contractible storage space, a one-way valve controlled inlet to said storage space through which said storage space is filled, a discharge outlet from said storage space through which the fluid so stored is discharged under pressure exerted by the elastic sleeve, and a manually. openated regulatable valve for said discharge outlet, the Valve being operated from a point at or near to the end farthest from the nozzle and discharge tube.

2L A syringe of the kind referred to comprising a filling and dischagetube, an inner rigid cylinder or barrel, a piston fitted therein, a. pump section valve for .passing the fluid to the cylinder, an outer elasticV sleeve normally in close proximity with said cylinder or barrel and attached thereto in a fluid` tight manner so as to forma contractible storage space,v a one-way valve controlled inlet from said cylinder to said storage space'through which said storage space is filled, said pistonY and said cylinder being relatively displaceable so as to cause fluid to pass by the suction valve'into the cylinder duringl one stroke and to be forced through the inlet to the storage space on the return stroke and a valve controlled discharge outlet from said storage space through'which the fluid so stored is discharged under the pressure exerted-by the elastic sleeve. y

3. A syringe of the kind referred to comprising an inner rigid cylinder or barrel, a piston fitted therein, a pump suction valve for passing the fluid to theA cylinder, a filling and discharge tube attached to said piston, an outer elastic sleeve normally in close proximity with said cylinder or barrel and'attached'thereto in aA fluid tight mannersdas to form a contractible storage space, a one-way valve controlled inlet from said cylinder to said storage space through which said storage space is lled, and a valve controlled discharge outlet from said storage space through which the fluidV so stored is discharged under the pressure exerted by theY elastic sleeve.

4. A syringe of the kind referred to comprising an inner rigid cylinder or barrel, a piston tted therein, said piston' and cylinder being relatively displaceable for pumping fluid, a ,resilient member Yfor causing movement in one direction, a, valve through which the fluid is pumped into the cylinder,l an outer elastic sleeve normally in close proximity with said cylinder or barrel and attached thereto in a fluid tight manner so 4as to form a contractiblel storage space, a one-way valve controlled inlet from said cylinder to said storage space through which said storage space is filled, and a valve controlled discharge outlet from said storage space through which the fluid so stored is discharged under the pressure exerted by the elastic sleeve.

5. A syringe of the kind referred to comprising an inner rigid cylinder or barrel, `a piston fitted therein, a valve through which the fluid is forced into the cylinder, said piston being prolonged in the form of a tube comprising socket and spigot parts passing through andprojecting beyond an end wall of the cylinder, an outer elastic sleeve normally in close proximitywith said cylinder or barrel and attached thereto in a fluid tight manner so as to form a .contractible storage space, a one-Way valve controlled inlet from said cylinder to said storage space vthrough which said storage space is filled, and a valve controlled discharge outlet from said storage space through which the fluid so stored is discharged under the pressure exerted by the elastic sleeve.

6. A syringe of the kind referred to comprising a filling and discharge tube consisting of socket and spigot parts, an inner rigid cylinder or barrel, an outer elastic sleeve normally in close proximity therewith and attached thereto in a fluid tight manner so as to form a contractible storage space, a one-Way valve controlled inlet to said storage space through which said storage space is lled, a valve controlled discharge outlet from said storage space through which the fluid so stored is discharged under the pressure exerted by the elastic sleeve, and means for detachably securing said socket and spigot parts together to provide an elongated filling and discharging tubesaid parts being constructed so that when detached they can be locatedi one within theL other and the two parts at least in part housed in said cylinder.

7. A syringe of the kind referred to comprising an inner rigid cylinder or barrel, a piston fitted therein, a valve for forcing the fluid into the cylinder, an outer elastic sleeve normally in close proximity with said cylinder or barrel and attached thereto ina fluid tight manner so as to form a contractible storage space, a one-way valve controlled inlet from said cylinder to said storage space through which said storage space is filled, a discharge outlet from said storage space through 'which the lluid so stored is discharged under the pressure exerted by the elastic sleeve, and a valve for said discharge outlet,

said valve having a tubular extension through. which the lluid is discharged and serving as a.

centre guide for the piston.

8. A syringe of the kind referred to comprising an inner rigid cylinder or barrel, a piston tted therein, said piston and said cylinder being relatively displaceable so as to form a pump, an outer elastic sleeve normally in close proximity with said cylinder or barrel and attached thereto in a fluid tight manner so as to form a contractible storage space, a one-way valve controlled inlet from said cylinder to said storage space through which said storage space is filled, a discharge outlet from said storage space through which the fluid so stored is discharged under the pressure exerted by the elastic sleeve, a valve for said discharge outlet, said valve having a tubular extenison through which the fluid is discharged, an aperture in the wall of said tubular extension, and a pump suction valve controlling said aperture and opening on the suction stroke of the pump to allow forthe passageL ofl fluid. through4 said extension into thefcylinder..

9. A syringel of the-kind referred' to: comprising a filling and discharge tube, anV inner Vrigid cylinderk or barrel, a' piston tted therein, a suction valve. in said'` piston through which they fluid is forced into the cylinder,"` an outer elastic sleeve normally "in close proximity with said cylinder 'or barrel and attached thereto in a fluid tight manner so as to form a contractible storage'space, a one-Way valve controlled inlet to said storage space through which saidstorage 'f space is filled,-v from said cylinder, a discharge outlet from said storagev space kthrough which the fluid .so stored s discharged under the pressure exerted by the elastic sleeve, and amanuallyoperated regulatable valveA for said discharge outlet. Y

I0. A syringe of Ythe kind referred to comprising a filling and discharge tube, an inner rigid cylinder or barrel, a piston fittedY therein, a-suction valve in saidr` piston through which the-fluid is forced into the cylinder, -an outer elastic sleeve' normally in close proximity with saidcylinder or barrel and attached thereto in a fluid tight manner so as to form a contractible storage space, a one-'way valve controlled inlet to said storage space through which said storage spaceV is filled from said cylinder, a discharge outlet fromr`r said storage space` through which the fluid so stored is dischargedunder the pressurevexertedf by theY elastic sleeve, a manually operated regulatable valve for said outlet, 'a tubular Aextension of said valve through which the fluid is discharged said extension also serving as a centre guide for the piston.` f

' 11. A syringe ofthe kind referred to comprising a filling and dischargetube, an inner rigid cylinder "or barrel, a piston therein, said piston Vand cylinder being relatively displace-` able, a pump suction valve, a resilient member anchored to the piston at one end, and to the end wall of the cylinder at the other end, said member serving toreturn the cylinder and piston into their normal position after relative displacement, an outerv elastic sleeve normally in close proximity With said cylinder or barrel and attached thereto in a iiuidtight manner so as to form a contractible storage space, a one-Way valve controlled Yinlet to said lstorage vspace through which said storage space-is filled from outlet from said storage space through which the fluid so stored is discharged under the pressure exerted by the elastic sleeve.

12. A syringe of the kind referred to comprising an inner rigid cylinder or barrel, an outer elastic sleeve normally in close proximity therewith and attached thereto in a fluid tight manner so as'to form a contractible storage space, a one-way valve controlled inlet to said storage space through which said storage space is filled, a discharge outlet from said storage space through which the fluid so stored is discharged under the pressure exerted by the elastic sleeve, a manually operated regulatable valve for said discharge outlet, and means for setting said regulatable valve.

13. A syringe or the like of the kind referred to comprising an inner rigid hollow cylinder or barrel, an outer elastic sleeve normally surrounding said cylinder and lying in close proximity therewith, a filling tube connected to said cylinder, said tube also acting as a discharge tube, said sleeve being attached to the cylinder in a fluid-tight manner and being adapted to be exfrom said storage space through which the iiuid so stored can be rdischarged under the pressure exerted by theelastically energized sleeve, and a manually operable valve for controlling the discharge through said outlet, said one-way valve being arranged to trap a quantity of-fluid in said storage space when said discharge valve is closed. f

14. A syringe according to claim 13, having external screw threads on the body. at or near the nozzle end, and provided with a-case the body of which has at its upper end screw threads forining a continuation of those above mentioned, and a cap having internal screwthreads of similar pitch adapted to co-operate rstly with the screw threads on the syringe and then with the screw threads on the case body to secure the cap to the case. A Y

15. A syringe or the like of the kind referred to comprising an inner rigid cylinder or barrel, an outer elastic sleeve normally surrounding said cylinder and lying in close proximity therewith, said sleeve being attached to the cylinder in a fluid-tight manner and being adapted to be expanded and elastically energized byfluid pressure so as to form a variable storage spacebetween the sleeve and the outer wall of thev cylinder, a iilling tube which also Aacts as a discharge tube leading to said cylinder, a uid inlet to said storage space from said cylinder and a oneway valve at such inlet for controlling the admission through such inlet of fluid by which said sleeve is elasticallyA expanded and the storage space filled, a discharge outlet from said storage space through which the fluid so stored can be discharged under the pressure exerted by the elastically energized sleeve `from the same end of the said tube as that used for Yiilling, and a valve arranged to be hand-operated -by the user for controlling the discharge through said outlet, said one-way valve being arranged to permit a quantity of fluid to be trapped insaidstorage space when said discharge valve isclosed.

16. A syringe or the like of the kind referred :to fcomprisinganinner, rigid hollow cylinder' or barrel, anfouter elastic 'sleeve normally surround,- ingsaid cylinder and vlying'in close proximity therewith, Vsaid sleeve being attached to' thevcyl- V-inderzin a'fluid-tight manner'andfbeing adapted to be expanded and elastically .energizedby fluid pressure so as to form. a variable storage space rbetween the sleeve and the outer wall of the cylinder, a iiuid inletfrom the interior of said cylin- Y adjustable discharge vnozzle at the` discharge end of the syringe *which is capable of 'being set in any one-of several positions for regulating the discharge, said dischargeend of .the syringe having an opening through which the fluid enters the syringe during filling, said adjustable nozzle being situated in said-opening. y

17. A syringe or. the like of the kind referred to comprisingl an inner rigid hollow cylinder,y an outer elastic sleeve normally surrounding said cylinder and lying in close proximity therewith,

afilling opening communicating with the interior offsaid cylinder, said filling opening also serving as a dischargefo'pening, said sleeve being attached to the cylinder in a fluid-tight manner and being adapted tolbe expanded and'elasticallyl energized by', fluid pressure so as to form aE variable storage space between the sleeve andthe outer wall of the cylinder, a iiuid inlet from the interior` of said cylinder to said storage space and a one-way valve for controlling the admission through such inlet of fluid by which said sleeve is `elastically expanded and the 'storage space filled, a discharge outlet "fronisaid storage space through which the fluid so 'stored cank be discharged under the pressure exerted by the elastically energized sleeve, a? valve' for controlling the discharge through said outlet, said one-way valve being arranged to trap the fluid in the said storage space when said discharge valve is closed, and means for lling said syringe through said cornmon Yfilling 'and dischargeppening direct from a'tap. Y HANS HERBERTfSCHULZ.

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