DE1911219A1 - T-connector with double valve - Google Patents

Description

T-connector with double valve

The present application constitutes an application for one Additional patent to patent application P 17 05 509 9 of May 31 1968 represent. The application P Ϊ7 03 503. 9 relates to an injection syringe pump, which In the with the injection pump connected flow conduit a check valve assembly so that the flow in the flow line can only flow in a single direction.

The present invention provides an improved check valve assembly in the form of an "Ines" connector with a Double valve for use when administering medication, for injecting fluid into or withdrawing fluid from the body, and the invention relates in particular to a T-connector with double valve for use with injection syringes either alone or in conjunction with the injection syringe pump according to application P 17 03 503 · 9 * «« To inject into the body or to withdraw from it a fluid volume which is larger than the capacity of the syringe.

909839/1104

BATH ORIGINAL

Ρ / Α

Injection syringes are widely used in medicine used for injecting fluid into or withdrawing fluid from the body. The fluid volume to be injected or withdrawn is often greater than that available capacity of the syringe, in this case there are two or more injections or withdrawals required what a results in a corresponding number of punctures of the syringe needle in the body.

To circumvent this problem, Y-connectors have been used as described in US Pat. No. Kr. 986 26? (Heviii) of March 7, 19II, which are the connection of the Allow syringe to an additional reserve container. The connector is equipped with valves to direct the fluid flow in the required direction, and one To prevent rioting; and these valves are connected to the Y-connector by a flexible hose connection. However, this device is large and cumbersome and has never been used on a large scale, in part because 'it is only used with very large volume syringes is really useful, whereas it usually occurs that the syringes have a very small volume * In in these cases the known arrangement is actually unusable.

Oemäsa of the present invention becomes a T-connector used, which has a three interconnected passage channels having Veirbverbindungsestüekkäfrper in one unit and connects two check valves, one of which is arranged in the two passage channels and ensures that the fluid flow through the channels of the Verbiiidtmgaatfl © k @ 3 only in one red line

909839/1104

BAD ORKäMÜP

2-148 Ρ / Α

a unit which consists of a part or a number consists of parts "which are connected to one another and connected to one another in a uniform construction" whereby the valves in the two channels in flow-tight catfish are attached «whereby the arrangement by, a press or This allows casting process to get the desired shape This not only simplifies the production of the T-connector, but it is also suitable for mass production and thus reduces the costs that arise to one Minimum dimensions.

According to a preferred embodiment of the device according to the invention, the connecting piece consists completely made of plastic »with the exception of the non-return valves« which can be made of plastic or rubber material «whereby the Plastic elements are all connected to one another with the check valves locked in their position and to one another « suitable and / or standardized connections »connections and sleeves are provided in each of the three channels« around one Connection to a conventional syringe «dispensing device and to enable a container or fluid supply. A preferred type of connection or sleeve is an iLuer connection or a Luer locking «

The invention provides in accordance with the foregoing ^ Connector with double valve for connecting a syringe to a supply of liquid medicament «for Delivery of a volume of liquid medicament "that exceeds the capacity of the pump" by means of a fluid delivery device to the body "and, in combination, has one VerblindungsstUokskurper on «the three interconnected Channels, has «being non-return valves in two of these channels

909839/1104

BATH

Ρ / Α

a fluid flow allow through the channels only in a single direction "and means esa äussereh Absohnibfc of each channel to connect this channel and of the connection piece" is at least one element is provided that. is selected from the group consisting of a storage container for a liquid element comprises "a fluid dispenser" and a syringe "wherein the body of the connector is made of plastic and houses the valves as a unit.

A feature of the invention-geiaässen ^ -connector 1st the outerfc small internal volume or fluid absorption capacity This is usually less than i ecm and. iot preferably less than 0.1 ecm "This means" that using Usual injection syringes high operating pressure «can be achieved can and also that very little of the fluid dispensed or withdrawn is lost within the T-connecting bag goes·

Another feature of the connector is »that it is made of a rigid material that cannot be deformed under pressure can be produced «which means« that no part of the available fluid pressure "transmitted by the syringe" is lost by expanding the connector.

FIG. 1 shows a cross section through a typical one according to the invention ! -Connection piece old double valve under use from Sntensohnabel valves "

Fig. 2 shows an end view of the lung on the line 2-2 of Fig. 1 « seen in the direction of the arrows "

90 9839/1104

2-148 Ρ / Α

3 shows a cross section through another outlet for the T-connector using referee valves, and

Fig. 4 shows a cross section of a further embodiment form dee T-connectors «using flap valves ·

In the drawings, the same cover soles are used for identical parts.

The T-connector with double valve shown in FIG. 1 has a VerblndungsgehKuse 1, which is molded entirely from plastic in one piece, in the present case from a modified phenylene oxide resin, which is under the trademark Noryl la trade. However, other thermoplastic or duroplastisehes prsssftthiges or giessfafriges plastic material may be used "such as Äthylaelluloee, Zelluloeeacetetbutyrat, Zelluloseproplonat" Nylon "polyphenylene oxide, polyethylene, polypropylene, polytetrafluoroethylene (Teflon), PolyahlortrifluorKfchylen (Kel-F) ₉ polystyrene" polyvinyl chloride, polycarbonates, polyoxymethylene ( Delrin), epoxy resins, urea formaldehyde ^, helaninfonaaldehyd-, phenolforsaldehyde, ^ -Methylpentene polyraeren-, (7PX) and (polyester resins., "

The connecting body is made up of three parts Unity consists of a source 1 and two blended flowers 2 and?, All of which are made up of the Figures can be seen by softening the plastic bit one Solvent on the respective neighboring flames are connected to each other · The connecting piece 1 is shown in a T-shape, with three loops 4, 5 and 6, each of which

909839 / -1ΤΌ4 '

2-148 Ρ / Α

has a central channel 7 »8 and 9» which are in one Unite Hittelkaoimer 2Q of the housing *. For reasons of convenience, the T-shape has been dug, but, it is obvious, that the shape of the connector is by no means essential, The three legs of the connecting stUoke provided with old canals may be arranged in the shape of a Y «or at any angle different from that in Pig. 1 shown 90 ° angle differs. However, a 90 ° angle is preferably used, for reasons that arise from the following Result in a description

The central channels 7, 8 and 9 intersect in the middle of the connecting piece housing, the housing 1 of the connecting piece has a protruding one at the inner end of the channel 6 * Section 10, which forms a valve seat .11. Beyond of the valve seat 11 is a wide bore 18 which extends to the outer end of the housing. An 'Enfcenechnabel-type check valve is located on the inner end of the bore 12, wherein the Sntenschnabel 18 from the valve seat 11 after looked extends, and a base flange 16 rests against the valve seat 11 in a flow-tight manner · The valve can be made of any elastic or flexible heat, Wet and solvent-borne material exist, such as for example made of natural or synthetic rubber, such as Neoprene »or from Büäadien-Styren-Acrylonitrilpolyraer, Polypropylen, Polyäthylen, Kthylehproprienpolyaeren, Polyvinylchlorid or Kautsehuk-Hydroehlorldharz · The base flange 16 of the Ventllee is in its position in the valve seat 11 by a • locked in the connecting piece forming insert 2, which is tightly received in the bore 12 «whereby the emitting due to the insert with the hole through a bond a solution is connected

909839/1104

BAD ÄIK ⁵

2-148 Ρ / Α

It is obvious that the insert 2 is in the hole too can be held by a press sits and he can further to be connected to diesel »by a <; ®« binding agent « The wall of the bore can be threaded old coin and the insert S have a corresponding «thread * so that it can be screwed tightly into the hole in which If the check valve 15 can be removed for the purpose of replacing it, this is the preferred embodiment however, the insert 2 is permanently connected to the bore 12. Xn In all cases, the Elnsats keeps the splash 16 dee valve 15 | tightly against the valve seat 11 to provide a leak-proof seal to build·

It is evident that ensured by the check valve 15 will that the sfer & mmg in channel 8 only in the Direction indicated by the arrow takes place *

The insert 2 has a central channel 17 «on his inner end through the check valve 15 with the channel 28 connected 1st. The outer end portion of the insert 2 is connected to a Luer insert 15, which is for connection to a Luar needle or other plttld delivery ** or removal device is intended ''

At the inner end of the channel 9 provided perpendicularly to the leg 6 , the housing 1 has an inwardly protruding section 20 which, at its outer end, forms a valve seat 21, against which a flange 22 of a check valve 23 , which is also designed as a duckbill valve, rests. This check valve is directed inwards, so. that the flow in channel 9 can only take place in the direction indicated by the arrow

- 7 - .., ' 909039/41 (K;

BATH

2-148 Ρ / Α

The housing 1 spreads beyond the valve seat 21 and forms a bore 24 which extends against the neck of the breast 1 * In the bore, an insert 3 forming a connecting part is arranged with a tight fit, the inner end of which on the outside of the flange 22 of the Check valve 23 is applied and this holds firmly in its position against the valve seat 21 "in order to" form a leeksioher seal. The insert 3 has an inner channel 27 guided through the non-return valve , and this channel is equipped at its section 26 with a Luer-Anscalue sleeve If for receiving a tube or other connection that goes out from a fluid delivery device or a reservoir.

The channel 7 "has no valve and is equipped with a Luer locking sleeve 29 * which is the discharge end the syringe S, which pumps 9IuId through the f-connector. The end of the syringe is in 91g. 1 bit dashed lines shown ·.

The operation of the connecting piece according to FIG. 1 takes place in the catfish described as soling. Sine a flask having syringe 8 is in the Xäer locking sleeve screwed in at the end of the channel 7, generally the outer area of the leg 4. In the Luer-AnechlusahÜlee 19 is a Luer-Siheatz arranged at the end of a Bohree "which to one in Fig. I The container R indicated in dashed lines leads, which contains a supply of the fluid to be pumped Injection of fluid placed in the body · The pumping action The plunger of the syringe on the handle 4 draws fluid from the container R into the inner chamber 30 of the ear during a suction stroke 1, and during the pumping stroke this fluid passes through the cannula 8,

909 83 9/1104

BATH

191T219

2-148 Ρ / Α

28 and 17 In and through the needle attached to the Luer connector sleeve XJ. A fluid volume of an amount that corresponds to the capacity of the syringe connected to the leg 4 is withdrawn from the reservoir and this volume is injected with each pump stroke can be fully controlled by the user of the syringe, 'depending on the lungs of the plunger stroke

The device can be used in a similar way for peeling off Fluid from a body cavity can be used «In this fan» the needle or the winding of the device is connected to the connecting foot 19 of the leg 6 and the container or another container is attached to the insert 13 of the Sohenkels 5 connected. In the case of an anaughty stroke, now Fluid taken from the body via channels 85 »27 and 9 and during the pump stroke this fluid passes through channels 8» 28 and 17 In the vessel. '

Can »KIU seen, the T-Verblndungsstüok without difficulty with any delivery device, such as a luer Hadel, a nozzle or another Endabsohluss connected I are", and the ^ -connecting can Similarly catfish on "in any reservoir or elaesi container" · Due to the arrangement of known couplings, the usual dispensing device, which is available at any time in a hospital or in the practice of an ante, can be used literally no fluid is lost with every use · - ': "■■■■■ ·' ■ - ■ · ■

- 9 r

909839/1104

BATH

2-148 Ρ / Α

The device vegetable of Figures 1 and 2 is four times grttseer shown as it corresponds to the actual size. the actual capacity of the chamber 30 within the check valve 15 * outside the check valve 23 and outside the syringe end »including the. Volumes of the channels 7 * 8 and 9 can be as little as 0.1 ecu or even smaller.

Any type of check valve can be used. The Enteneehnabelbauart shown in Figures 1 and 2 with a zwiebelfönnigen duckbill end corresponds to the preferred embodiment · Bs further poppet valves * Ball valves "umbrella valves and flapper valves can be used werdenο ^f.

Figure 3 shows a line of a connector according to Flg. 1 and 2 show in which instead of the duckbill valves; Sole valves are used. The valves 40 and 41 have umbrella-shaped tops and base flanges 42 and 43, which are connected to the screen by leg 44 and 45 are connected · The valves are la the cannula 46 and 47 elngesefet, which by the inwardly protruding part 50 of the ' Housing 51 and the end 52 of the connecting socket 53 are formed been. The Auesenf lache of the wall section 50 forms one Valve seat 54, against which the shield side of the valve in in a leak-tight manner · A similar valve seat is on the inner surface of the adapter sleeve 53 is formed. The valves 40 »41 are in the, channels 46 and 47 through the with flanges provided lower parts 42 and 43 of the valves held. the Valves block channels 48 and 49 only when the bottom of the valves are in contact with their respective valve seats. Therefore, the valves control the flow in the channels 55 »56, 57 and 58 such that the flow is only in the direction

- 10 ... 909839/1104

11 2-148 Ρ / Α

the arrows flow »

In this connecting piece each leg is connected to one Luer connection sleeve 19 equipped

Flg. 4 A connecting piece can be used in a wide range of flap valves 60 and 61. The flap valve 61 can open freely inwardly into the channel 62 and the flap valve is provided with a flange 63 which is leak-proof through the inner surface 65 Connection sleeve 64 in a recess. 66 of the housing 6? is held in its place. Similarly, the flap valve 6l, which is arranged in the channel 68 "" has a flange 74, which through the inside 75 of the! The connecting sleeve 70 is held firmly in place in the recess 71, and the flap valve βθ can move freely forwards and backwards in the space formed by the channel 69.The flap valves control the flow through the channel 72 of the connecting sleeve 64 accordingly , and through the XanSle 62 »68 and 69« so that the flow can only flow in the direction indicated by the arrows.

The T-connection piece according to FIG. 4 points in the legs S and 6 connectors 73 on, in soft drill holes, those in dashed lines Lines are shown, can be used, and also a neck-shaped Xuer> connection in the leg 4 »

The mode of operation of the T-connection according to FIGS. and Figure 4 is exactly the same as the T-connector after Figures 1, 1 and 2 "." ./ ,; ..--. ·

909839 / 1tÖ4

^BATH

SCraSO QhB

2-148 Ρ / Α

KLe shown arrangements of the valves in the legs and the channels of the connecting piece correspond to a preferred embodiment in order to allow a clear view of the arrows in However, to achieve the flow indicated in the figures β Bs let obviously «that the double veatiles in any two Legs arranged for any Sträaungsriehtung can be. The arrangement shown prevents one Air inclusion in the chamber of the connecting piece, and furthermore the leakage of a flexible hose or pipe, that »it can be connected to legs 2 and 5 ·.

A special feature of the ⁴ invention-shaped T-stUokes is »that it is possible« to withdraw fluid from any closed container without having to vent the inside of the container »in order to compensate for the resulting vacuum * This is based on the extremely low» Internal volume of the T-connector. As a result of the small internal volume (less than 1 gene and preferably less than 0.1 com) a high pressure ratio is obtained. It is therefore possible to obtain pressures in the container that are lower than the steam pressure of water and many other liquids. This means "That no air has to be introduced into the container in order to pump liquid out of the container" If the T-connector according to the invention is therefore used, there is no risk of contaminated air getting into a sterile liquid to be pumped into the body.

It is also possible. Pump up gases from a container extremely low pressures reached "ind. For example it is

- IS -

909839 / 1i 04

BAD ORiOiNAt

2-148 Ρ / Α

in the case of a valve with an internal volume of l oont and one 50 com syringe possible, oae pump up from a container «up to A vacuum of 1 / 500th of a meter is achieved. Furthermore, it is possible to use a valve according to the invention with a volumetric efficiency of almost £ 100 to pump.

The structure of the T-VerbindimgsetUclces is such "that it can be squeezed from a cheap Xunststoffnateriai or cast" which 1st thermoplastic or duroplasfcisoh, but like in a deformable or glessbaren polymer tlonszustand is "The connector can without difficulty only 5 parts in ' A unit can be produced, namely the housing of the connecting piece, the two valves and two connection sets or valve inserts. If desired, the housing of the connecting piece can also be produced in two corresponding halves and connected with the valves and connections inserted a binding agent can be permanently connected to each other · In some cases it is also possible to manufacture the "housing of the connecting piece" so that the valves can be inserted into their respective ducts and sealed in their position, with the ends of the ducts "Show" a shape that is required to accommodate the desired connections · In this way, the total number of parts is reduced to three and the connection inserts shown in the drawings are dispensable. "

909339/1

BATH 0RI6INA!

104

Ρ / Α

The device obtained is simple in construction, handling and cleaning. The device is so cheap that for sanitary reasons it can be thrown away after use · As the device is made entirely of heat-resistant and solvent-resistant material it can be made sterile before Hirer is used and in a sterilizer for a considerable amount of time Period of time kept without adverse effect »earth, falf this is desired *

It is possible to produce a connection piece that withstands the pressure required for pumping out of any container, since the invention can be made of non-elastic plastic materials by molding or casting processes, with wall thicknesses being used that can withstand any flow pressure that occurs. In this respect it is Non-flexible or rigid connectors according to the present invention are superior to connectors which have a biegaanes drill as a component, which the Takes up valves or the connections to the suspension system or to the fluid supply · "" -

909839/1104

Claims (1)

2-148 Ρ / Α March 5, 1969 Patent anaprttohe ^ -Connection piece with double valve to connect a Syringe with a liquid supply of a drug * for the purpose of dispensing a volume of a liquid medicament via a leakage device on the body «whereby the said volume is greater than the capacity of the syringe is characterized by the combination of a connecting piece body which has three interconnected channels has j, with rear | arranged in two of these channels sehlagventllen, which the flow through the channels in control in a single direction, and with a device on the outside of each kenale to connect it Channel and the connector to at least one element, that is selected from the group consisting of a liquid Medication reservoirs, a fluid dispenser, and comprising a syringe, where the body of the connector is made of plastic and the valves as one Unit absorbs. 2 »^ connecting piece old double valve according to claim 1» characterized by a connecting piece housing, which in at least one channel having a valve contains a connection * which secures the valve in the channel and which has a channel »which the channel of the connection at Uoksgehäusee. connects to each other at the inner end and the connecting device at the outer end 3 · T-connector with double valve according to claim 2, characterized in that such a connection piece is arranged in each channel having a valve * - 15 - 909839/1104 ^OR! “OK 2-148 P / E 4. ^ -connection piece according to claim 3, characterized in that the connection thickness is attached to the connector housing and the connector housing consists of one piece. 5.! ^ Connecting piece with double valve according to claim 4, marked by, the connecting piece © with the Connections and are connected to the valves, The valves are sealed in a tight seal in the connection to hold the case 6. ^ connecting piece rushes double ^ sntil buttocks claim 2? characterized «that the connecting piece housing and the connectors arranged therein are connected» 7. T-connector with double valve according to claim I ^ characterized in that there «DoppeIx'enfcil by Efitensohnäbelventile is formed 8. T-connector ptit double valve gesaäss claim Ij. characterized in that the »the double ^ entll through SchirtEH valves is formed. 9. ^ -connector with double valve according to claim .1, daduroh gekennssele! met ^ daee the double valve through flap valves is formed. 10. T-connector with double valve geaEso Änsprtich 1, which means that "the channel star delivery of fluid flowing with the channel" does not allow _? that is connected with the Sprifczs, and that of the K * aal aur connection with the S09S3S / 1 BATH 2-148 Ρ / Α Pluidvorrab iss right angles to the named channels lies. 11. T-connector with double valve according to claim I _9, characterized in that the channels are equipped with Luer tubes for connection "with a drug storage container and with a fluid delivery device" 12. ^ connecting piece Bait double valve according to claim X _9, characterized in that the internal volume of the connecting body between the valves is less than a OQBl eats. 13 · T-connecting piece with double valve vegetable claim 2, characterized in that the connecting piece consists of molded plastic Ik, ^ connecting piece with double valve according to claim 1, characterized * that the connecting branch container consists of relatively rigid plastic. 15 · T-connector: with double vantil according to claim 1, characterized in that the channels in the central section of the connecting piece body are connected to one another. > 17 τ 909839/1104