RU2828660C2 - Disposable replaceable kit connector - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, namely to a medical connector for a fluid delivery system. Connector comprises a liquid inlet socket configured for detachable engagement with a connection socket of a replaceable reusable set (MUDS) for establishing a liquid connection therewith. Connector has a locking mechanism configured for detachably attaching the medical connector to a replaceable reusable set (MUDS). Fixing mechanism has an elastic projection, which is made with the possibility of deviation from the engagement position to the free position and back by means of the elastic projection deflection. Connector includes a sensitive element in the form of a sensitive lug having reflecting surfaces for reflecting light. Sensitive boss is configured to reflect light emitted by the sensor on the fluid delivery system back to the sensor when the medical connector is inserted into the connector socket of a reusable replaceable set (MUDS) and is reversibly fixed by a fixing mechanism. Connector has a fluid supply line to the patient connected at the first end to the liquid inlet socket and having a fluid supply line connector at the second end configured to be connected to the patient's catheter. Connector comprises a check valve configured to maintain a unidirectional flow through the fluid inlet to the fluid supply line to the patient. Fluid flow along the fluid supply line to the patient is unidirectional from the first end to the second end by means of a check valve. Sensitive boss is formed on the resilient protrusion of the fixing mechanism so that it reflects light emitted by the sensor when it is in the engaged position and does not reflect light from the sensor when it is in a free position. Reusable replaceable kit (MUDS) is configured to supply fluid to a patient using a medical connector.

EFFECT: improvement of medical devices and systems used to deliver fluids to patients during various medical procedures.

11 cl, 35 dwg

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to U.S. Provisional Patent Application No. 61/925,940, filed January 10, 2014, the disclosure of which is incorporated herein by reference in its entirety.

BACKGROUND OF THE INVENTION

Field of technology

[0002] The present invention generally relates to the field of connectors for a disposable replacement set, and more particularly to connectors of a disposable replacement set configured to deliver fluid to a patient.

Description of the Prior Art

[0003] During many medical diagnostic and therapeutic procedures, a healthcare professional, such as a physician, administers one or more medical fluids to a patient. In recent years, a number of medical fluid delivery systems have been developed for the administration of fluids under pressure, such as a contrast solution (often referred to simply as a “contrast agent”), a flushing agent such as saline, and other medical fluids, for use in procedures such as angiography, computed tomography (CT), ultrasound, magnetic resonance imaging (MRI), positron emission tomography (PET), and other molecular diagnostic procedures. In general, these medical fluid delivery systems are designed to deliver a predetermined amount of fluid at a predetermined flow rate.

[0004] In some injection procedures, a healthcare professional inserts a catheter or needle into a vein or artery of a patient. The catheter or needle is connected to either a manual or automated fluid administration system via tubing and a connector that communicates with the fluid administration system. Automated fluid administration systems typically include at least one syringe connected to at least one fluid injector that includes, for example, a motorized linear piston. The at least one syringe includes, for example, a source of contrast agent and/or a source of flushing fluid. The healthcare professional enters settings into the electronic control system of the fluid injector to fix the volume of contrast agent and/or saline solution and to fix the rate of administration for each. A connector of a disposable replacement set and associated tubing are connected to the fluid administration system to deliver one or more fluids to the patient.

[0005] Although various manual and automatic fluid delivery systems are known in the medical field, there is still a need for improved multi-fluid delivery systems intended for use in medical diagnostic and therapeutic procedures in which one or more fluids are delivered to a patient. In addition, the medical field also needs improved disposable replacement set connectors that can be used with a multi-fluid delivery system to improve the delivery of one or more fluids to a patient. There is still a need in the medical field for improved medical devices and systems used to deliver fluids to patients during various medical procedures.

BRIEF DESCRIPTION OF THE INVENTION

[0006] In light of the above, there is a need for a medical connector assembly for connecting a disposable portion of a medical assembly to a reusable portion of the assembly. Additionally, there is a need for a fluid delivery system for delivering multiple doses of fluid to multiple patients using one or more multi-dose containers. The assembly should be designed to maintain the sterility of the fluid path in the disposable and reusable portions of the assembly and, in particular, to maintain the sterility of the portions of the assembly that can be reused. Furthermore, the system should be designed to allow automatic priming, defined as the removal of air from the fluid line, to facilitate fluid injections.

[0007] Therefore, the present application provides a medical connector configured to meet some or all of the listed needs. According to one embodiment, a medical connector may comprise a fluid inlet receptacle configured to removably engage with a connection receptacle of a reusable replacement kit (MUDS) to install a fluid connection thereto. The medical connector may further comprise a drain outlet receptacle configured to removably engage with the drain inlet receptacle of the MUDS to install a fluid connection thereto. A patient fluid supply line may be connected at a first end to the fluid inlet receptacle and may be connected at a second end to the drain outlet receptacle. The flow of fluid along the patient fluid supply line may be unidirectional from the first end to the second end. The patient fluid supply line may be configured to be reversibly disconnected from the drain outlet receptacle to supply fluid to the patient.

[0008] According to another embodiment, a medical connector may have a locking mechanism for removably attaching the medical connector to the MUDS. The locking mechanism may have a resilient projection that is configured to deflect from the engaged position to the free position and back by deflecting at least a portion of the resilient projection. The resilient projection may have a pressing surface that, when pressed, deflects the resilient projection from the engaged position to the free position. In some embodiments, the fluid inlet may comprise a housing that surrounds at least a portion of the fluid inlet. The housing may have at least one recess to facilitate handling of the medical connector. The housing may have one or more ribs that extend beyond the outer surface of the housing. The fluid inlet may have a shape to prevent connection with the drain inlet of the MUDS, and the drain outlet is shaped to prevent connection with the connection port of the MUDS. The medical connector may have an asymmetric shape so that the medical connector can be connected to the MUDS kit only in one orientation. At least one boss may be provided to prevent incorrect connection of the medical connector to the MUDS kit. In some embodiments, the second end of the patient fluid supply line may have a connector configured to releasably engage with the drain outlet socket, while maintaining sterility of the second end. The connector may be in fluid communication with the drain outlet socket. The connector may be a Luer connector. The check valve may be configured to maintain a unidirectional flow through the fluid inlet socket to the patient fluid supply line. In some embodiments, at least one sensor element may be configured to interact with at least one sensor configured to detect the presence or absence of at least one sensor element indicating that the medical connector has been correctly inserted or installed. At least one sensor element comprises one or more reflective surfaces for reflecting visible or infrared light to at least one sensor. The liquid inlet socket comprises at least one seal for sealing the liquid inlet socket.

[0009] According to another embodiment, the connector of the disposable replacement kit may have a fluid inlet receptacle configured to releasably engage with the connection receptacle of the MUDS kit for establishing a fluid connection therewith, and a drain outlet receptacle configured to releasably engage with the drain inlet receptacle of the MUDS kit for establishing a fluid connection therewith. A divider may be provided for separating the fluid inlet receptacle from the fluid outlet receptacle. The locking mechanism may be configured to removably attach the connector to the MUDS kit. The locking mechanism may have an elastic projection that is configured to deflect from the engaged position to the free position and back by deflecting at least a portion of the elastic projection. The patient fluid supply line may be connected at the first end to the fluid inlet receptacle. The connector may be connected to the second end of the patient fluid supply line. The fluid flow along the patient fluid supply line may be unidirectional from the first end to the second end. The connector may be configured to provide a detachable fluid connection to a drain outlet for supplying fluid to the patient.

[0010] According to another embodiment, a method for delivering fluid using a disposable replacement kit connector may include fluidly connecting a fluid inlet port of the disposable replacement kit connector to a reusable replacement kit (MUDS) connector port and establishing fluid communication between a drain outlet port of the disposable replacement kit connector and a drain inlet port of the MUDS. The method may further include priming the disposable replacement kit connector by delivering fluid from the fluid inlet port to the drain outlet port via a fluid line and disconnecting the fluid line from the drain outlet port. The method may further include delivering fluid from the fluid inlet port to the connector via a fluid line. In some embodiments, the method may include attaching the disposable replacement kit connector to the MUDS before priming the disposable replacement kit connector.

[0011] These and other features and characteristics of the disposable replacement kit connectors, as well as the methods of operation, the functions of the associated structural elements, the combinations of parts and the economies of manufacture will become more apparent from a consideration of the following description and the appended claims with reference to the accompanying drawings forming a part of this description, in which like reference numerals designate corresponding parts in the various figures. However, it should be clearly understood that the drawings are provided for illustrative and descriptive purposes only and are not intended to limit the scope of the invention. As used in this description and claims, the singular forms include the corresponding plural forms unless the context clearly dictates otherwise.

BRIEF DESCRIPTION OF GRAPHIC MATERIALS

[0012] Fig. 1 is a perspective view of a multi-fluid delivery system according to one embodiment;

[0013] Fig. 2 is a schematic illustration of various fluid passages within the multi-fluid delivery system shown in Fig. 1 ;

[0014] Fig. 3A is a perspective view of the interface prior to connection of the disposable replacement kit connector to the multi-fluid delivery system;

[0015] Fig. 3B is a perspective view of the connection boundary of Fig. 3A , showing the connector of the disposable replacement kit connected to the multi-fluid delivery system;

[0016] Fig. 4A is a perspective view of a disposable replacement kit connector according to one embodiment;

[0017] Fig. 4B is a cross-sectional view of the connector of the disposable replacement kit shown in Fig. 4A ;

[0018]Fig. 4Cis a cross-sectional view of the connector of the disposable replacement kit shown inFig. 4A, connected to the socket of the multi-fluid supply system;

[0019] Fig. 5A is a perspective view of the connector of the disposable replacement kit shown in Fig. 4C , with a portion of the multi-fluid delivery system and the MUDS kit cut away;

[0020] Fig. 5B is a detailed perspective view of a rib of the connector sensor of the disposable replacement kit shown in Fig. 5A ;

[0021] Fig. 6 is a perspective view of a connector of a disposable replacement kit according to another embodiment;

[0022] Fig. 7A is an enlarged cross-sectional view of the connector of the disposable replacement kit shown in Fig. 6 taken along line AA ;

[0023] Fig. 7B is an enlarged cross-sectional view of the disposable replacement kit connector shown in Fig. 6 taken along line B-B ;

[0024] Fig. 8A - 8F are perspective views of various stages of connecting the disposable replacement kit connector to the MUDS connector;

[0025] Fig. 9 is a perspective view of a connector of a disposable replacement kit according to another embodiment;

[0026] Fig. 10A is a perspective view of a MUDS connector socket according to one embodiment;

[0027] Fig. 10B is a schematic cross-sectional view of the MUDS connector shown in Fig. 10A ;

[0028] Fig. 10C is a schematic representation of a MUDS connector having an absorbent pad attached thereto, according to another embodiment;

[0029] Fig. 11A is a perspective view of a connector of a disposable replacement kit according to another embodiment;

[0030] Fig. 11B is a perspective view of a MUDS connector according to another embodiment;

[0031] Fig. 11C is a cross-sectional view of a medical connector assembly, wherein the disposable replacement kit connector of Fig. 11A is inserted into the MUDS connector of Fig. 11B ;

[0032] Fig. 12 is a front perspective view of a connector of a disposable replacement kit according to another embodiment;

[0033] Fig. 13A is a perspective view of a connector of a disposable replacement kit according to another embodiment;

[0034] Fig. 13B is a cross-sectional view of a medical connector assembly comprising the disposable replacement kit connector shown in Fig. 13A ;

[0035] Fig. 14A is a perspective view of a connector of a disposable replacement kit according to another embodiment;

[0036] Fig. 14B is a perspective view of a connector of a disposable replacement kit according to another embodiment;

[0037] Fig. 15A is a perspective view of a connector of a disposable replacement kit according to another embodiment;

[0038] Fig. 15B is a perspective view of a connector of a disposable replacement kit according to another embodiment;

[0039] Fig. 16A is a side view of the outer clamp of the disposable replacement kit connector shown in Fig. 15A ;

[0040] Fig. 16B is a perspective view of a disposable connector of a medical connector assembly according to another embodiment; and

[0041] Fig. 17 is a schematic diagram of an electronic control system for a multi-fluid fluid delivery system according to another embodiment.

DETAILED DESCRIPTION OF THE INVENTION

[0042] For the purposes of the following description, the terms "upper", "lower", "right", "left", "vertical", "horizontal", "top", "bottom", "transverse", "longitudinal" and their derivatives shall be attributed to the present invention in accordance with the orientation in the figures of the drawings. When referring to a syringe of a MUDS kit, the term "proximal" means that part of the syringe that is located closest to the piston element for delivering fluid from the syringe. When referring to a connector of a disposable replaceable set, the term "distal" means that part of the connector of a disposable replaceable set SUDS that is located closest to the user when the connector of a disposable replaceable set is oriented for connection to a multi-fluid administration system. When referring to a syringe of a MUDS kit, the term "distal" means that part of the syringe that is located closest to the delivery nozzle. When referring to a connector of a disposable replacement set, the term "proximal" means that portion of the connector of the disposable replacement set that is closest to the multi-fluid delivery system when the connector of the disposable replacement set is oriented for connection to the multi-fluid delivery system. It should also be understood that certain devices and processes depicted in the accompanying drawings and described in the following technical description are merely exemplary embodiments of the invention. Accordingly, specific dimensions and other physical characteristics related to the embodiments described herein should not be considered limiting.

[0043] Referring to the drawings, wherein like reference numerals refer to like components for all views in which they are shown, the present invention is generally directed to a multi-fluid medical injector/delivery system 100 (hereinafter referred to as the “fluid administration system 100 ”) having a multiple-patient disposable set (MUDS) 130 configured to deliver a fluid to a patient using a single-use disposable set (SUDS) connector. The fluid administration system 100 includes several components, individually described herein. In general, the fluid administration system 100 has a motorized injection apparatus or device and a fluid delivery set configured to, in conjunction with the injector, deliver one or more fluids from one or more multi-dose pressurized containers to a patient, as described herein. Various devices, components, and features of the fluid administration system 100 and the associated fluid delivery set are also described in detail herein.

[0044] With reference toFig. 1, system 100the liquid introduction contains a housing102injector having opposite sides104, distal or superior end106and the proximal or inferior end108. In some embodiments, the housing102can be supported by a base110, having one or more wheels112for support with the possibility of rotation and movement of the body102on the floor surface. One or more wheels112can be designed with the ability to lock to prevent the case102from accidental movement once it has been set in the desired position. At least one handle may be provided114to facilitate the movement and installation of the system100introduction of liquid. In other embodiments, the housing102may or may not be removably attached to a fixed surface such as a floor, ceiling, wall, or other structure.102covers the various mechanical drive components, the electrical and power components required to operate the mechanical drive components, and control components such as electronic memory and electronic control devices (hereinafter referred to as electronic control device(s)) used to control the operation of the piston elements103, which can move in the opposite direction (shown inFig. 2), related to the system described in this document.100fluid injection. Such piston elements103can be moved in the reverse direction by means of electromechanical drive components, such as a ball screw driven by a motor, a voice coil drive, a rack and pinion drive, a linear motor, etc. In some embodiments, at least some of the mechanical drive components, electrical and power components, and control components may be provided on the basis of110.

[0045] Continuing with FIG. 1 , the fluid delivery system 100 has at least one door 116 that covers at least some portion of the MUDS assembly, mechanical drive components, electrical and power components, and control components. Desirably, the door 116 can be moved from an open position to a closed position and back (shown in FIG. 1 ). In some embodiments, the door 116 can be configured to be locked.

[0046] The fluid administration system 100 further comprises at least one ready-to-drink fluid connector 118 for connecting to at least one ready-to-drink fluid source 120. In some embodiments, multiple ready-to-drink fluid connectors 118 may be provided. For example, as shown in Fig. 1 , three ready-to-drink fluid connectors 118 may be provided, arranged side by side or otherwise. In some embodiments, the at least one ready-to-drink fluid connector 118 may be a needle configured to removably connect to at least one ready-to-drink fluid source 120 , such as a vial, bottle, or bag. The at least one ready-to-drink fluid connector 118 may have a reusable or non-reusable boundary with each new ready-to-drink fluid source 120 . At least one ready-to-use fluid connector 118 may be formed on a disposable set for simultaneously servicing several patients, as described in this document. At least one ready-to-use fluid source 120 may be configured to receive a medical fluid, such as a saline solution, a contrast solution, or another medical fluid, for supply to the fluid administration system 100. The housing 102 may have at least one support element 122 for supporting at least one ready-to-use fluid source 120 after it is connected to the fluid administration system 100 .

[0047] Continuing with FIG. 1 , the fluid administration system 100 includes one or more user interfaces 124 , such as a graphical user interface (GUI) display window. The user interface 124 may display information that relates to a fluid administration procedure involving the fluid administration system 100 , such as the current flow rate, fluid pressure, and remaining volume in at least one ready-to-use fluid source 120 connected to the fluid administration system 100 , and may be a touch screen GUI that allows an operator to enter commands and/or data for operating the fluid administration system 100. The user interface 124 is shown on the injector housing 102 , but such a user interface 124 may also be in the form of a remote display that is wired or wirelessly connected to the housing 102 and the control and mechanical elements of the fluid administration system 100 . In some embodiments, the user interface 124 may be a tablet computer that is removably connected to the housing 102 and is in wired or wireless communication with the housing 102. In addition, the fluid administration system 100 and/or the user interface 124 may comprise at least one control button 126 so that an operator on duty of the fluid administration system 100 can control it in a tactile manner. In certain embodiments, the at least one control button 126 may be part of a keyboard for entering commands and/or data by the operator. At least one control button 126 may be hardwired to an electronic control device(s) associated with the fluid administration system 100 to provide direct input to the electronic control device(s). At least one control button 126 may also be a graphical part of the user interface 124 , such as a touch screen. In any of the embodiments, it is desirable that at least one control button 126 provides the duty operator of the fluid administration system 100 with certain features of individual control, including, but not limited to: (1) confirmation that the replacement set for simultaneous servicing of several patients has been loaded or unloaded; (2) locking/unlocking the replacement set for simultaneous servicing of several patients; (3) filling/cleaning the fluid administration system 100 ; (4) entering information and/or data associated with a patient and/or an injection procedure, and (5) starting/stopping the injection procedure. The user interface 124 and/or any electronic data processing unit associated with the fluid administration system 100 can be wired or wirelessly connected to an operating system and/or a data storage system, such as a hospital network system.

[0048] With reference toFig. 2, system 100fluid administration contains a MUDS kit130, which is detachably connected to the system100fluid introduction for supplying one or more fluids from one or more sources120ready-to-use liquid for the patient. MUDS Kit130may contain one or more syringes or pumps132. In some embodiments, the number of syringes132can match the number of sources120ready-to-drink liquid. For example, onFig. 2MUDS kit130contains three syringes132, located side by side so that each syringe132can establish a liquid connection with one or more sources120ready-to-drink liquid. In some embodiments, one or two sources120ready-to-use liquids are designed with the possibility of connection to one or more syringes132MUDS kit130. Each syringe132can establish a liquid connection with one of the sources120ready-to-drink liquid using the appropriate connector118for ready-to-drink liquid and its associated channel134for MUDS kit fluid. Channel134for the MUDS kit fluid may contain a needle element that connects to the connector118for ready-to-drink liquid. In some embodiments, the connector118for ready-to-drink liquid can be provided directly on the MUDS kit130.

[0049] As also shown in Fig. 2 , the MUDS 130 may be configured to be removably connected to the housing 102 of the fluid delivery system 100. One skilled in the art will appreciate that it may be desirable to manufacture at least a portion of the MUDS 130 from a transparent medical plastic to facilitate visual confirmation of the fact that a fluid connection has been established with the fluid delivery system 100. Visual confirmation is also desirable to ensure that there are no air bubbles in the various fluid connections. Alternatively, at least a portion of the MUDS 130 and/or the door 116 may comprise windows (not shown) to visualize the connection between the various components. Various optical sensors (not shown) may also be provided to detect and confirm the connections. In addition, various lighting elements (not shown) may be provided, such as light emitting diodes (LEDs), to which one or more optical sensors respond and which indicate that a suitable connection has been established between the various components.

[0050] Let's take a closer lookFig. 2, which shows a schematic representation of the various fluid channels of the system100fluid administration. MUDS kit130may contain one or more valves136, such as shut-off valves, under the control of which medical fluid or combinations of medical fluids are taken from a multi-dose source120ready-to-use liquid and/or supplied to the patient through each syringe132. In some embodiments, one or more valves136may be provided at the distal end140several syringes132or on the collector148. Collector148can be in liquid communication via valves136and/or syringes132with the first end of the channel134for the MUDS kit fluid that connects each syringe132with the corresponding source120ready-to-use liquid. The opposite second end of the channel134for the liquid of the MUDS kit, it is designed with the possibility of connection to the corresponding connector118for ready-to-use liquid, which is designed with the possibility of liquid connection to the source120ready-to-use liquid. Depending on the position of one or more valves136, the liquid can be drawn into one or more syringes132, or it can be supplied from one or more syringes132. In the first position, for example, when filling syringes132, one or more valves136oriented so that the liquid flows away from the source120ready-to-use liquid into the appropriate syringe132by the intake line150for liquid, such as the MUDS kit liquid channel. During the filling procedure, one or more valves136arranged so that the flow of liquid through one or more outlet lines152for liquid or collector148locked. In the second position, for example during the liquid delivery procedure, the liquid from one or more syringes132fed into the collector148through one or more outlet lines152for liquid or through the outlet seats of the syringe valve. During the delivery procedure, one or more valves136arranged so that the flow of fluid through one or more inlet lines150for liquid blocked. One or more valves136, intake lines150for liquid and/or outlet lines152for liquid can be placed in the collector148. One or more valves136can be selectively set to the first or second position by manual or automatic manipulation. For example, the operator can set one or more valves136into the desired position for filling or dispensing liquid. In other embodiments, at least part of the system100fluid injection allows automatic installation of one or more valves136to the desired position for filling or dispensing fluid based on data entered by the operator as described in this document.

[0051] Let's continue our considerationFig. 2, in some embodiments, the outlet line152for liquid can also be connected to the tank156for draining the system100introduction of liquid. It is desirable that the reservoir156for draining was separated from the syringes132to prevent contamination. In some embodiments, the reservoir156for draining, it is designed with the ability to receive drained liquid released from syringes132, for example, during a pumping operation. Reservoir156for draining it can be made with the possibility of removal from the body102, so that the contents of the tank can be emptied156for draining. In other embodiments, the reservoir156for draining, it may have a drain socket (not shown) to drain the contents of the tank156for draining without removing the tank156for draining from the body102. In some embodiments, the reservoir156for draining provided as a separate component from the MUDS kit130.

[0052] Having completed the general description of the components of the fluid administration system 100 and the MUDS 130 , we now turn to a description of the design and method of using the single-use replacement kit (SUDS) 190 and its interaction with the MUDS 130 .

[0053] With reference tofig. 3A And 3B, system 100the fluid inlet contains a connecting socket192, which is configured to form a detachable liquid connection with at least a portion of the SUDS kit190. In some embodiments, the connector socket192can be formed in a MUDS kit130. Connecting socket192may be covered by at least part of the body102systems100introduction of fluid. For example, the placement of the connector socket192in a recess in the inner part of the body102can keep the connector socket sterile192by preventing or limiting contact between the user or patient and parts of the connector socket192, which come into contact with the fluid to be administered to the patient, and contamination of these parts. In some embodiments, the connector socket192is located in a recess within the hole194, formed in the corps102systems100fluid inlet or connector socket192may comprise a closing element (not shown) that surrounds at least a portion of the connector socket192. In other embodiments, the connecting socket192can be formed directly in the body102and connected to the MUDS kit130via a fluid channel (not shown). As described in this document, the SUDS kit190can be connected to the connector socket192, formed at least in part by the MUDS set130and/or housing102. It is desirable that the connection between the SUDS kit190and a connecting socket192was a detachable connection to allow selective disconnection of the SUDS kit190from the connecting socket192(Fig. 3A) and connections with a connecting socket192(Fig. 3B). In some embodiments, the SUDS kit 190can be disconnected from the connector socket192and discarded after each liquid supply procedure and can be connected to the connecting socket192new SUDS complex190for the next liquid supply procedure.

[0054] Let's continue our considerationFig. 3AAnd 3B, separate from the connection socket192an input jack may be provided196for draining. Input socket196for draining is in liquid communication with the tank156for draining. In some embodiments, the reservoir156for draining is provided separately from the SUDS kit190, so that the liquid from the input socket196for drainage can be fed into the tank156for draining. At least part of the SUDS kit190can be detachably connected or linked to the input jack196for draining to drain the drain liquid into the tank156for draining, for example during a bleeding operation, in which the SUDS kit190displace air. Reservoir156may have a viewing window for drainage198with scale200, such as graduation marks that indicate the filling level of the tank156for draining.

[0055] With reference toFig. 4A, SUDS kit190has an input jack202for liquid, which is designed with the possibility of detachable connection to a connecting socket192(shown onFig. 3A). Input socket202for liquid accepts liquid supplied from the system100introduction of liquid. It is desirable that the input socket202for the liquid it was a hollow, tubular element, as shown inFig. 4B. SUDS kit190additionally contains an output socket204for draining, which is designed with the possibility of detachable connection or communication with the input socket196 for draining (shown on Fig. 3A). Output socket204for draining, receives drain liquid and delivers this drain liquid to the tank156for draining, for example, during the SUDS kit bleeding operation190. It is desirable that the output socket204for drainage it was a hollow, tubular element, as shown inFig. 4B. Output socket204for draining can be connected to, inserted into or located in the input socket202for draining so that the drained liquid can flow through the inlet socket202to drain and from there proceed to the tank156for draining. Input jack202for liquid and outlet socket204for draining they can be separated from each other by a divider206. In some embodiments, the separator206is sized to align with the input jack202for liquid and outlet socket204for drain with connecting socket192and the input jack196for draining, respectively. Note that the SUDS kit190shown onFig. 4Ain the condition after removal from the packaging (not shown). Before use, the SUDS kit190preferably packaged in pre-sterilized, hermetically sealed packaging to protect the SUDS kit190from contamination by airborne or surface-borne substances. Alternatively, hermetically sealed packaging and SUDS kit190can be sterilized after packaging.

[0056] SUDS Kit190preferably has an asymmetrical design so that the user can only attach the SUDS kit190to the MUDS set130in one orientation. This prevents the user from having to attach the input jack202for liquid to the input socket196for draining. In some embodiments, at least a portion of the SUDS kit190a tide may be provided207, preventing incorrect insertion of the SUDS kit190into the connecting socket192In certain embodiments, the tide207can be formed on the separator206next to the output socket204for draining. So the tide207can prevent incorrect insertion of the SUDS kit190into the connecting socket192. To prevent incorrect insertion of the SUDS kit190into the connecting socket192may be used other than the tide207elements and forms.

[0057] In some embodiments, the system208tubes can be connected at its proximal end210with input jack202for liquid. System208the tubes are designed to supply liquid received from the input socket202for liquid. Distal end212systems208tubes may contain connector214, which is designed to be connected to an output socket204for drainage or a fluid channel connected to the patient (not shown). System208tubes can be made of an elastic material, such as medical plastic, which allows the system208tubes to roll into a spiral. Connector214may be a Luer connector (either a male Luer connector or a female Luer connector, depending on the desired application) or another type of medical connector. In some embodiments, the connector214may have a check valve to prevent backflow of fluid. Alternatively, the check valve may be located somewhere in the SUDS kit190between the input jack202for liquid and connector214.

[0058] Continuing with Fig. 4A , the SUDS kit 190 may have a locking projection 216 that is configured to selectively lock the SUDS kit 190 with the fluid delivery system 100 depending on the engagement of the locking projection 216 with at least a portion of the fluid delivery system 100. In some embodiments, the locking projection 216 may be a resilient projection that is configured to be deflected from the engaged position to the free position and back by deflecting at least a portion of the locking projection 216 . The locking projection 216 may have a pressing surface 218 that, when pressed, causes the locking projection 216 to be deflected from the engaged position to the free position for inserting the SUDS kit 190 into and removing it from the fluid delivery system 100 . In some embodiments, the locking projection 216 may be configured to releasably lock into engagement with the receiving slot 217 in the MUDS assembly 130 (shown in Fig. 4C ).

[0059] With reference toFig. 4B, SUDS kit190may have first ring skirt224, passing along the circumference of the proximal end226input jack202for liquid, and a second ring skirt220, passing along the circumference of the distal end222input jack202for liquid. First and second annular skirts224,220surround the entrance socket202for liquid to prevent accidental contact and contamination. First annular skirt224may have one or more notches228(shown onFig. 4A), passing along its side wall. One or more notches228can provide a stop boundary with a corresponding stop element (not shown) in the system100fluid injection. Second annular skirt220may have at least one recess230(shown onFig. 4A) to facilitate gripping and handling of the SUDS kit190. In some embodiments, the second annular skirt220may have a relief surface with one or more ribs232(shown onFig. 4A) to facilitate gripping and handling of the SUDS kit190.

[0060] Let's continue our considerationFig. 4B, at least one ring seal may be provided234around the proximal end226input jack202for liquid. At least one O-ring seal234can seal the input socket202for liquid to prevent liquid from leaking through the SUDS kit190. At least one O-ring seal234can provide liquid seal between SUDS kit190and a set of MUDS130, when they are in fluid connection with each other, allowing fluid movement from the MUDS kit130to the SUDS kit190without leakage. Within the cavity of the input socket202a check valve can be provided for the liquid236to prevent fluid flow in the opposite direction from the SUDS kit190in the MUDS set130.

[0061] With reference toFig. 4C, SUDS kit190, shown onFig. 4A, shown connected to the system100introduction of fluid. Although onFig. 4Cthe connection socket is shown192, formed in the MUDS set130, in other embodiments, the connecting socket192can be formed in part of the body102(shown onFig. 1). Input socket202for SUDS kit liquid190connected to the connector socket192to create a channel for liquid in the direction of the arrowF, shown onFig. 4C. Liquid passing through the inlet socket202for liquid, flows through a check valve236and into the system208tubes. Any liquid that may drip from the boundary between the input socket202for liquid and connecting socket192, is collected in the tank156 for draining. Tank 156for drainage it can have a shape to collect all the liquid that may drip from the SUDS kit190, when it is removed from the MUDS set130. In addition, when the SUDS kit190connected to the connecting socket192, outlet hole of the outlet socket204for draining is located within the inlet socket196to drain in such a way that the drained liquid from the system208tubes can be led into the tank156for drain. Separator206can define a limiting insertion surface that determines the insertion depth of the SUDS kit190into the connecting socket192.

[0062] With reference toFig. 5A, system 100fluid administration may include a system238with sensors, which is designed to recognize when the SUDS kit190is in fluid communication with the MUDS kit130. System 238with sensors may contain at least one sensitive element, such as a tide240sensor Included with SUDS190and the corresponding sensor242in the system100fluid administration or in the MUDS kit130. Sensor242can be configured to recognize the presence and absence of at least one tide240sensor or other sensing element. In some embodiments, the sensing element, such as at least one boss240sensor, formed on the locking protrusion216SUDS kit190, as shown inFig. 4A. In other embodiments, the sensing element, such as at least one boss240sensor, can be formed on any part of the SUDS kit190. Sensor242there may be an optical sensor located and fixed within a corresponding frame formed on the body102systems100fluid injection. As will be understood by those skilled in the art of mechanized medical fluid injectors, the sensor242may be electronically coupled to an electronic control device used to discretely control the operation of the fluid delivery system, such as the operation of one or more piston elements, at least in part based on input data from a sensor242. A sensitive element such as a tide240sensor, may have one or more reflective surfaces that reflect visible or infrared light that the sensor is supposed to detect242. In other embodiments, mechanical interaction between the sensing element and the sensor may be used.242.

[0063] In some embodiments, the SUDS kit 190 may further comprise non-reusable features (not shown). For example, the SUDS kit 190 may comprise one or more fragile sensor features, projections, or structures that bend or break when the SUDS kit 190 is removed from the MUDS kit 130. The absence of these features may prevent the SUDS kit 190 from being reinserted and used after removal. In this way, it may be possible to ensure that the SUDS kit 190 is used for only one fluid delivery procedure.

[0064] Having completed the general description of the system components100fluid administration, MUDS kit130and SUDS kit190, Let's move on to a detailed description of how to use the SUDS kit190During use, the healthcare professional or user removes the replaceable SUDS190from its packaging (not shown) and inserts into the input jack202for liquid into the connection socket192on the MUDS set130. As described above, the SUDS kit190must be inserted in the correct orientation so that the input jack202for liquid was aligned to connect with the connecting socket192, and the output socket204for draining it was aligned to connect with the input socket196for draining. SUDS kit190can be attached to the MUDS kit130by inserting a locking lug216into the receiving groove217on the MUDS set130. When the SUDS kit190firmly connected to the MUDS kit130, for example, when the sensor readings indicate this242, system 100fluid administration (shown infig. 1) draws liquid into one or more of a number of syringes132MUDS kit130and performs an automatic bleeding operation to remove air from the MUDS kit130and SUDS kit190During such a bleeding operation, the fluid from the MUDS kit130is introduced through a connecting socket192and into the system208SUDS kit tubes190. Liquid passes through the system208tubes and through the outlet socket204for draining and enters the tank156for draining. When the automatic bleeding operation is complete, the health care professional disconnects the connector214from the output socket204for draining. After that, the connector214can be connected to the patient via a catheter, vascular access device, needle, or optional fluid channel set to facilitate fluid delivery to the patient. Once fluid delivery is complete, the SUDS set190disconnected from the patient and the MUDS kit130by removing the locking protrusion216SUDS kit190from engagement with the receiving groove217on the MUDS set130. The healthcare worker can then discard the SUDS kit.190. In certain embodiments, removing the SUDS kit190 from the MUDS kit 130activates non-reusable elements (not shown), thereby eliminating the need to reinsert and use the SUDS kit190.

[0065] Referring to Fig. 6 , the interface between the SUDS kit 190 and the MUDS kit 130 is shown according to another embodiment. The MUDS kit 130 has a connection socket 192 , which may be formed as a hollow, tubular element with a Luer connector 24 (either a Luer male connector or a Luer female connector, depending on the desired application) that extends from the distal end of the socket 192 into the socket 192 . Accordingly, the proximal opening of the Luer connector 24 is located in a recess within the interior of the socket 192 . The Luer connector 24 may comprise a screw thread 30 (shown in Fig. 7B ) for attaching the MUDS kit 130 to the SUDS kit 190 . For example, the screw thread 30 may be located on the outer housing 32 surrounding the luer connector 24 , as shown in Figs. 7A and 7B . The screw thread 30 may also be located on the luer connector 24 itself. The luer connector 24 defines a fluid passage 34 (shown in Fig. 7B ) that extends therethrough, from the proximal end of the connector socket 192 to its distal opening. Although the connector socket 192 is depicted as including the luer connector 24 , other types of connectors may be used within the scope of the present invention, including, but not limited to, clamp connectors, bayonet connectors, press fit connectors, and the like. Additionally, in certain embodiments, the connector 24 for the connector socket 192 desirably is a non-standard connector (e.g., a connector of an unusual size or shape) in order to avoid the attachment of connectors that are manufactured by third parties.

[0066] The MUDS kit 130 has a drain inlet 196 (shown in Fig. 6 ), which may also be formed as a hollow, tubular element. The drain inlet 196 comprises a cone-shaped distal nozzle 36 attached to a fluid conduit, such as a resilient tube system 208 made of a medical polymer, which connects the drain inlet 196 to a drain reservoir 156 (shown in Fig. 2 ).

[0067] Back tofig. 6, as detailed in this document, the MUDS kit130designed to be connected to the SUDS kit190, which is thrown away after the first use. Note that the SUDS kit190shown onFig. 6in the condition after removal from the packaging (not shown). Before use, the SUDS kit190preferably packaged in pre-sterilized, hermetically sealed packaging to protect the SUDS kit190from contamination by substances in the air or on surfaces.

[0068] SUDS Kit190may contain two or more sockets corresponding to the connecting socket192 and input socket 196for draining the MUDS kit130. For convenience, the SUDS kit sockets190equivalent to input jack202for liquid and outlet socket204for draining the SUDS kit190, described with reference toFig. 4A-4B. Nests202,204can be provided in a protective shell42, which the body can accept20MUDS kit130, as shown inFig. 7B. Protective shell42preferably has an asymmetrical design so that the user can only attach the SUDS kit190to the MUDS set130in one orientation. For example, the user cannot attach a connector socket192MUDS kit130to the output jack204for draining the SUDS kit190. Nests202,204and protective shell42SUDS kit190can be made of a material that is suitable for medical use, such as medical grade plastic. The system208SUDS kit tubes190connected between the proximal end of the input socket202for liquid and the end of the outlet socket204for draining through shut-off valves. System208The tubes can be supplied in coil or reel form for ease of packing and maneuverability.

[0069] Referring to Fig. 7A and 7B , the fluid inlet socket 202 of the SUDS kit 190 is a hollow, tubular member configured to be inserted into the connection socket 192 of the MUDS kit 130 . The fluid inlet socket 202 of the SUDS kit 190 comprises a tubular groove, such as a Luer connector 44 , defining a fluid passage 46 that extends from a proximal end of the socket 202 located adjacent to the MUDS kit 130 and a distal end of the socket 204 connected to the tubing system 208. The Luer connector 44 is configured to be connected to the Luer connector 24 of the MUDS kit 130 . When firmly connected, the connection socket 192 of the MUDS kit 130 is in fluid communication with the inlet socket 202 for fluid of the SUDS kit 190 . The luer connector 44 may include a wheel 52 for attaching the connection socket 192 of the MUDS kit 130 to the inlet socket 202 for fluid of the SUDS kit 190. The wheel 52 may be formed integrally with the luer connector 44 or may be a separate element rigidly connected to the luer connector 44 by conventional means. The wheel 52 rotates the luer connector 44 , as a result of which the projections 54 that extend from it engage with a corresponding screw thread 30 in the connection socket 192 . The tube system 208 is connected to the fluid inlet socket 202 via an opening 56 on the wheel 52 such that a continuous fluid connection is established between the MUDS kit 130 and the tube system 208 .

[0070] Continuing with FIGS. 7A and 7B , the SUDS kit 190 also includes an outlet port 204 for draining the SUDS kit 190 . The outlet port 204 for draining the SUDS kit has a fluid passage 58 formed by a tubular trough 60 that extends between the inlet port 196 for draining the MUDS kit 130 and the tubing system 208. The tubing system 208 may not be directly connected to the inlet port 196 for draining the MUDS kit 130 . Instead, the tubular trough 60 of the SUDS kit 190 may separate the tubing system 208 from the MUDS kit 130 , thereby providing isolation of the tubing system 208 and the connector 214 from the inlet port 196 for draining the MUDS kit 130 . The tubular chute 60 may be positioned in a recess relative to the inlet socket 196 for draining the MUDS kit 130 due to a portion of the protective shell 42 of the disposable connector in order to reduce the likelihood of contamination. The tubular chute 60 may also be positioned at an angle relative to the horizontal in order to promote the flow of liquid along the outlet socket 204 for draining the SUDS kit 190 and into the inlet socket 196 for draining the MUDS kit 130 . In some embodiments, the SUDS kit 190 may further comprise elements that do not allow reuse (not shown). For example, the SUDS kit 190 may comprise fragile projections or structures that bend or break when the SUDS kit 190 is removed from the MUDS kit 130 . In this way, it is possible to ensure that the SUDS kit 190 will be used only for one liquid supply procedure.

[0071] With reference to Figs. 8A - 8F , a method for operating an embodiment of the connection assembly between the SUDS 190 and MUDS 130 kits shown in Figs. 6-7B will be described in detail. During use, a health care professional or user removes a replacement SUDS 190 from its packaging and inserts the SUDS 190 kit into the corresponding MUDS 130 kit. As described above, the SUDS 190 kit must be inserted in the correct orientation so that the connection receptacle 192 of the MUDS 130 kit engages the fluid inlet receptacle 202 of the SUDS 190 kit and the drain inlet receptacle 196 of the MUDS 130 kit engages the drain outlet receptacle 204 of the SUDS 190 kit. As shown in Fig. 8B , the health care professional then turns the wheel 52 to attach the SUDS kit 190 to the MUDS kit 130. When the SUDS kit 190 is securely connected to the MUDS kit 130 , the fluid administration system 100 (shown in FIG. 1 ) draws fluid into one or more of the plurality of syringes 132 of the MUDS kit 130 and performs an automatic priming operation ( FIG . 8C ) to remove air from the MUDS kit 130 and the SUDS kit 190. During this priming operation, fluid from the MUDS kit 130 is introduced through the connection port 192 and into the tubing system 208 of the SUDS kit 190. The fluid passes through the tubing system 208 and through the waste outlet port 204 and enters the waste reservoir 156 . When the automatic priming operation is completed, the healthcare professional disconnects the connector 214 from the drain outlet 204 ( Fig . 8D ). The connector 214 can then be connected to the patient via a catheter, vascular access device, needle, or additional fluid channel set to facilitate fluid delivery to the patient ( Fig . 8E ). When fluid delivery is complete, the user disconnects the connector 214 by rotating the wheel 52 to remove the SUDS set 190 from the MUDS set 130 ( Fig. 8F ). The healthcare professional can then discard the SUDS set 190 . In certain embodiments, removal of the SUDS 190 from the MUDS 130 causes non-reusable features (not shown), such as tabs that extend from a portion of the SUDS 190 , to bend or break, preventing reinsertion of the SUDS 190 .

[0072] With reference to Fig. 9 , another embodiment of a connector assembly is shown having a SUDS kit 190 and a MUDS kit 130 . In this embodiment of the assembly, the SUDS kit 190 comprises a cannula socket 62 for receiving a needle cannula 129 connected to the connector 214 . The cannula 129 used to deliver fluid to a patient can be inserted into the cannula socket 62 after being removed from the patient. The cannula socket 62 can cover the contaminated end of the cannula 129 when the cannula 129 is discarded. In this embodiment, the disposable protective sheath 42 is desirably long enough so that the entire length of the needle cannula 129 can be inserted into the protective sheath 42 for safe disposal.

[0073] With reference tofig. 10A And 10B, another embodiment of the connector assembly having a SUDS kit is shown190and MUDS kit130. The connector assembly is provided in a vertical orientation, with the connector socket192MUDS kit130located above the input socket196for draining. MUDS kit130contains a drip channel64, which passes between the connecting socket192and the input jack196for draining. All liquid that flows from the connection socket192, is directed down the drip channel64due to gravity. Drip channel64opens into the input jack196for draining. Accordingly, all liquid leaving the drip channel64, is directed through the input jack196for drainage and is collected in a tank156for draining. Alternatively, included in the MUDS kit130an absorbent material such as an absorbent pad may be provided66, shown onFig. 10C, surrounding part of the connector socket192and the input jack196for draining. The absorbent material is designed to absorb any liquid that may drip during the removal of the SUDS kit.190to combat leakage more effectively.

[0074] With reference to Fig. 11A-11C , another embodiment of a connector assembly is shown, having a SUDS kit 190 and a MUDS kit 130 with several press-fit connectors. As shown in Fig. 11A , the SUDS kit 190 comprises an inlet socket 202 for liquid and an outlet socket 204 for draining. Instead of a wheel, the SUDS kit 190 comprises release tabs 68. The SUDS kit 190 also comprises an alignment member 70 , which extends from the protective shell 42 of the SUDS kit 190 and is configured to be inserted into a corresponding groove 72 of the MUDS kit 130 (shown in Fig. 11B) .

[0075] As shown in the cross-sectional view shown in Fig. 11C , the SUDS kit 190 is inserted into the MUDS kit 130 and aligned with it due to the alignment grooves 71. The release projections 68 are formed integrally with a tubular housing 74 having an inwardly facing flange 76 at one end thereof. The housing 74 surrounds a tubular groove 80 on the SUDS kit 190 . When the SUDS kit 190 is inserted into the MUDS kit 130 , the flange 76 forms an interference engagement with a corresponding ridge 78 extending from a portion of the connecting socket 192 of the MUDS kit 130 . The interference engagement creates a substantially liquid-tight connection between the MUDS kit 130 and the SUDS kit 190 . Pressing on the release tabs 68 of the SUDS kit 190 disengages the flange 76 from the ridge 78 , allowing the user to remove the SUDS kit 190 from the MUDS kit 130 . With reference to Fig. 12 , a connection assembly having a MUDS kit 130 and a SUDS kit 190 with the release tabs 68 described above can also be provided in a vertical configuration.

[0076] With reference tofig. 13A And 13B, another embodiment of the connector assembly having a SUDS kit is shown190and MUDS kit130. MUDS Kit130contains a connecting socket192and the input jack196for draining, as described in the previous embodiments. The connecting socket192contains a co-molded sealing surface82to create a seal between the SUDS kit190and a set of MUDS130. SUDS kit190contains external surfaces84alignments formed integrally with the protective shell42, for proper alignment of the SUDS kit190and MUDS kit130. Surfaces84the alignments are also deepened relative to the input socket202for liquid and outlet socket204for draining the SUDS kit190, to reduce the possibility of contamination before use.

[0077] Referring to Fig. 14A - 16B , various embodiments of the tube system 208 are shown. For example, the tube system 208 may be wound around a support member 133 , such as a core or frame member, to ensure that the tube system 208 does not unwind when it is removed from the package or when the SUDS kit 190 is connected to the MUDS kit 130 . Referring to Fig. 16A , the tube system 208 may further comprise a removable outer clamp 135 . The clamp 135 closes around the wound tube system 208 so that the tube system 208 does not unwind during removal from the package or auto-priming. Referring to Fig. 16B , in a further embodiment, the tube system 208 is provided with deployed portions 137 that separate the tube system 208 from the SUDS set 190. The rolled portion 139 of the tube system 208 hangs below the deployed portions 137 when the SUDS set 190 is connected to the MUDS set 130 .

[0078] Referring to Fig. 17 , an electronic control device 900 (shown in Fig. 17 ) can be coupled to the fluid administration system 100 to control filling and dispensing operations. In some embodiments, the electronic control device 900 can control the operation of various valves, piston elements, and other elements to influence the desired filling or dispensing procedure. For example, the electronic control device 900 can comprise a number of discrete computer-readable media. For example, these computer-readable media can comprise any media that can be accessed by the electronic control device 900 , such as: volatile media, nonvolatile media, removable media, non-removable media, intermediate media, non-intermediate media, etc. As a further example, these computer-readable media may comprise computer storage media such as media implemented by any method or technology for storing information such as computer-readable instructions, data structures, program modules or other data; random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other storage technologies; compact discs, digital versatile discs (DVD) or other optical disk storage devices; magnetic tape cassettes, magnetic tapes, magnetic disk storage devices or other magnetic storage devices; or any other media that can be used to store the desired information and that can be accessed by the electronic control device 900 . Additionally, these machine-readable media may contain communication media such as machine-readable instructions, data structures, program modules, or other data in the form of a modulated data signal, such as an electromagnetic signal carrying a modulated data signal, or other transport mechanism, and include all information delivery media, wired media (such as a wired network and direct-wired connection) and wireless media (such as audio signals, radio frequency signals, optical signals, infrared signals, biometric signals, bar code signals, etc.). Of course, combinations of any of the above should also be included within the scope of machine-readable media.

[0079] The electronic control device 900 further comprises a system memory 908 with computer storage devices in the form of volatile and non-volatile memory, such as ROM and RAM. A basic input/output system (BIOS) with corresponding computer standard routines helps transfer information between components within the electronic control device 900 and is typically stored in ROM. The random access memory portion of the system memory 908 typically contains data and program modules that can be directly accessed or currently operated by the processing module 904 , such as an operating system, application programming interfaces, application programs, program modules, program data and other machine-readable command codes.

[0080] Continuing with Fig. 17 , the electronic control device 900 may also include other removable or non-removable, volatile or non-volatile, intermediate or non-intermediate computer data storage products. For example, the electronic control device 900 may include a non-removable memory interface 910 that communicates with and controls a hard disk 912 , such as a non-removable, non-volatile magnetic storage device; and a removable nonvolatile memory interface 914 that communicates with and controls a magnetic disk drive 916 (which reads from and writes to a removable, nonvolatile magnetic disk 918 ), an optical disk drive 920 (which reads from and writes to a removable, nonvolatile optical disk 922 , such as a compact disk), a universal serial bus (USB) port 921 for use in connection with a removable memory card, etc. However, it is envisaged that other removable or non-removable, volatile or nonvolatile computer storage devices may be used in the exemplary information technology system 902 , including, but not limited to, magnetic tape cassettes, DVD disks, digital video tapes, solid state RAM, solid state ROM, etc. These various removable or non-removable, volatile or non-volatile magnetic media communicate with the processing module 904 and other components of the electronic control device 900 via the system bus 906 . The disk drives and associated computer storage devices discussed above and shown in Fig. 17 provide storage of operating systems, machine-readable instructions, application programs, data structures, program modules, program data and other machine-readable command code for the electronic control device 900 (whether or not they duplicate this information and data in the system memory 908 ).

[0081] A user may input commands, information, and data into the electronic control device 900 via certain pluggable or ready-to-use input devices, such as the user interface 124 shown in Fig. 1 , via the user input interface 928. Of course, a variety of such input devices may be used, such as a microphone, a trackball, a joystick, a touch pad, a touch screen, a scanner, etc., including any device that facilitates input of data and information into the electronic control device 900 from an external source. As already discussed, these and other input devices are often connected to the processing module 904 via the user input interface 928 connected to the system bus 906 , but may be connected via other interface elements and a bus, such as a parallel I/O port, a game port, or USB. In addition, the data and information may be presented or provided to the user in an understandable form or format by means of certain output devices, such as a monitor 930 (for visually displaying this information and data in electronic form), a printer 932 (for physically displaying this information and data in printed form), a column 934 (for acoustically presenting this information and data in acoustic form), etc. All of these devices communicate with the electronic control device 900 by means of an output interface 936 connected to the system bus 906. It is assumed that any such peripheral output devices may be used to provide the user with information and data.

[0082] The electronic control device 900 can operate in a network environment 938 by using a communication device 940 that is integrated into the electronic control device 900 or remote from it. This communication device 940 operates under the control of and in interaction with the remaining components of the electronic control device 900 due to a communication interface 942. In such an arrangement, the electronic control device 900 can connect to or otherwise exchange information with one or more remote computers, such as a remote computer 944 , which can be a personal computer, a server, a router, a networked personal computer, a peer-to-peer device or other conventional network nodes, and, as a rule, contains many or all of the components described above in connection with the electronic control device 900 . Using suitable communication devices 940 , such as a modem, a network interface or adapter, etc., the computer 944 can operate in and exchange information via a local area network (LAN) and a wide area network (WAN), but can also include other networks such as a virtual private network (VPN), an office network, an enterprise local area network, an internal network, the Internet, etc.

[0083] In the context of this application, the electronic control device 900 comprises or is capable of executing appropriate custom-made or standard software to implement and carry out the processing steps of the method and system according to the present invention, thereby forming a specialized and special computing system. Accordingly, the claimed method and system may comprise one or more electronic control devices 900 or similar computing devices including a machine-readable storage device capable of storing machine-readable program code or instructions, by executing which, the processing module 904 executes, controls or otherwise implements the methods, processes and manipulations for converting data that are discussed hereinafter in connection with the present invention. In addition, the electronic control device 900 can be represented in the form of a personal computer, a pocket personal computer, a portable computer, a notebook, a hand-held personal computer, a mobile device, a mobile phone, a server or any other type of computing device that contains the necessary hardware to appropriately process data for the effective implementation of the claimed computerized method and system.

[0084] One skilled in the art will appreciate that the system may utilize databases physically located on one or more computers, which may or may not be similar to their respective servers. For example, software on the electronic control device 900 may manage a database physically located on a separate network processor or other medium.

[0085] In some embodiments, the electronic controller 900 may be programmed so that the automatic refilling occurs based on a predetermined triggering minimum volume in the respective syringes 132 . For example, when the volume of fluid remaining in at least one of the syringes 132 becomes lower than a predetermined volume, the electronic controller 900 automatically starts a procedure for refilling the syringe. The electronic controller 900 , associated with the fluid administration system 100 , may determine that the predetermined triggering minimum volume has been reached by monitoring the volume of fluid dispensed from the respective syringes 132 during operation of the fluid administration system 100 . Alternatively, liquid level sensors can be integrated into the fluid administration system 100 , and input data from these liquid level sensors can be provided to the electronic control device 900 , so that the electronic control device 900 can determine when a predetermined triggering minimum volume has been reached in at least one of the syringes 132. The filling volume and the refilling rate can be set in the electronic control device 900 . The automatic refilling procedure can either be stopped automatically by the electronic control device 900 , or interrupted manually. In addition, the automatic refilling procedure can be started when, after the completion of the fluid administration procedure, at least one of the syringes 132 does not have enough liquid left to perform the next predetermined fluid administration procedure.

[0086] It is possible that during the refilling procedure, one or more of the ready-to-use fluid sources 120 associated with the respective syringes 132 may remain empty ( e.g. , there is not enough fluid initially to complete a full refill of one or more syringes 132 ). In such a case, a replacement of the ready-to-use fluid source 120 is necessary, and it is desirable that the replacement of such a ready-to-use fluid source 120 be performed quickly. The fluid administration system 100 may include an indicator, such as an audible and/or visual indicator, to signal to the operator that the ready-to-use fluid source 120 needs to be replaced before the fluid administration system 100 can be used.

[0087] Several embodiments of the connectors of the disposable replacement kit are shown in the accompanying figures and described in detail above, but those skilled in the art will easily understand and implement other embodiments without departing from the scope and spirit of the invention. For example, it should be understood that the present invention contemplates that, to the extent possible, one or more features of any embodiment can be combined with one or more features of any other embodiment. Accordingly, the above description is intended to be illustrative and not limiting.

Claims (17)

1. A medical connector for a fluid administration system comprising: a fluid inlet socket configured to be releasably engaged with a connection socket of a reusable replacement kit (MUDS) for installing a fluid connection thereto; a locking mechanism configured to removably attach a medical connector to the reusable replacement kit (MUDS), wherein the locking mechanism has an elastic projection that is configured to be deflected from the engaged position to the free position and back by deflecting at least a portion of the elastic projection; at least one sensing element in the form of a sensing boss comprising reflective surfaces for reflecting light, wherein said sensing boss is configured to reflect light emitted by at least one sensor on the fluid administration system back to at least one sensor when the medical connector is inserted into the connector socket of the reusable replacement kit (MUDS) and reversibly secured by a locking mechanism; a patient fluid supply line connected at a first end to the fluid inlet and having a fluid supply line connector at a second end configured to be connected to a patient catheter, and a check valve configured to maintain a unidirectional flow through the fluid inlet to the patient fluid supply line, wherein the fluid flow along the patient fluid supply line is unidirectional from the first end to the second end by means of the check valve, wherein said sensitive lug is formed on the elastic projection of the locking mechanism in such a way that it reflects light emitted by at least one sensor when it is in the engaged position and does not reflect light from at least one sensor when it is in the free position, and wherein the reusable replacement kit (MUDS) is designed with the possibility of delivering fluid to the patient using a medical connector. 2. A medical connector according to claim 1, characterized in that the medical connector is attached to a reusable replacement kit (MUDS) by inserting an elastic projection of the medical connector into a receiving groove on the reusable replacement kit (MUDS). 3. A medical connector according to item 2, characterized in that the elastic protrusion has a pressing surface that is designed to deflect the elastic protrusion from the engagement position to the free position when pressed. 4. A medical connector according to claim 1, characterized in that at least one sensitive element is a fragile sensor element. 5. A medical connector according to claim 1, characterized in that the fluid inlet socket comprises a casing surrounding at least a portion of the fluid inlet socket, and the casing has at least one recess. 6. A medical connector according to item 3, characterized in that the casing has a relief surface having one or more ribs. 7. The medical connector of claim 1, wherein the medical connector has an asymmetric shape such that the medical connector is connectable to the reusable replacement kit (MUDS) in only one orientation. 8. A medical connector according to claim 1, characterized in that the fluid supply line connector is a Luer connector. 9. A medical connector according to claim 1, comprising a drain outlet socket configured to be releasably engaged with a drain inlet socket of a fluid delivery system for establishing a fluid connection therewith; and wherein the fluid supply line connector is designed with the possibility of detachable engagement with the outlet socket for draining the fluid administration system while maintaining the sterility of the second end. 10. A medical connector according to claim 9, characterized in that the fluid supply line connector is designed to be in fluid communication with the drain outlet socket when engaged with the drain outlet socket. 11. A medical connector according to claim 1, characterized in that the fluid inlet socket has at least one seal for forming a fluid-tight connection between the fluid inlet socket and the connection socket.

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