RU2818640C2 - Infusion system - Google Patents

Abstract

FIELD: medical equipment.

SUBSTANCE: invention relates to infusion systems. Infusion system includes a pump unit and a motor unit. Pump unit can be configured to receive and/or hold at least one container with a medical fluid and may include a fluid distribution system at least partially engaged with a peristaltic pump head located in the pump unit. Motor unit can be located with possibility of extraction in pump unit and connected to head of peristaltic pump to move fluid from container to fluid outlet potentially coupled to infusion set.

EFFECT: disclosed is an infusion system.

15 cl, 18 dwg

Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application is pursuant to 35 U.S.C. § 119(e) has priority to US Provisional Application No. 62/873,684, filed July 12, 2019, which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

[0002] The disclosed embodiments relate to infusion systems and related methods of use.

BACKGROUND OF THE ART

[0003] In some cases, traditional peristaltic infusion pumps can be used to deliver medical fluids to a patient. These traditional peristaltic infusion pumps are large systems used in hospitals that are typically connected to an IV bag containing medical fluid. The tubing in fluid communication with the intravenous bag is manually guided or connected to the head of the peristaltic pump by a healthcare professional, after which the tubing can be connected to the patient so that the medical fluid can be delivered to the patient.

[0004] In other cases, peristaltic pumps can be used in infusion systems based on reusable reservoirs worn by the patient. These systems typically include a refillable, built-in reservoir from which metered doses are delivered over time by a peristaltic pump. Such systems are fully integrated and are periodically refueled.

SUMMARY OF THE INVENTION

[0005] In some embodiments, systems and methods are provided for administering medical fluids to a patient using an infusion system having a pump unit and a motor unit. In some embodiments, the pump assembly includes a cavity for receiving a container of medical fluid, a spike located in the cavity and configured to pierce the container, a peristaltic pump head configured to pump fluid from the container, and a fluid outlet, connected to the infusion set. In some embodiments, the motor unit includes a motor unit housing containing a motor and a battery. In some embodiments, the motor assembly may be placed within the pump assembly such that the motor is coupled to the head of the peristaltic pump. In some embodiments, the pump unit is disposable, while the motor unit is reused with multiple pump units. In some embodiments, the pump unit and motor unit may be wearable on a patient. In some embodiments, the pump block may be combined with a container to form a pump block cartridge, where the container is retained in the pump block and at least one locking projection prevents the container from moving in the pump block when pierced by a tenon. The at least one locking projection may prevent the container from moving until a threshold force is applied to the container.

[0006] In some embodiments, the pump assembly for an infusion system includes a housing, as well as a cavity defined in the housing and configured to receive and support the container, the cavity including a cavity base and a cavity wall. The pump unit also includes a spike located in the cavity and extending perpendicular to the base of the cavity, which is configured to pierce the container when the container is placed in the cavity, a peristaltic pump head located in the housing, a fluid outlet, and a fluid connecting tube. environment spike with outlet for fluid. The peristaltic pump head is in contact with at least a portion of the tube, with the housing enclosing the cavity, the spike, the peristaltic pump head, and the tube.

[0007] In some embodiments, the pump unit cartridge includes a housing, a cavity formed in the housing and containing a cavity base and a cavity wall, and a container located in the cavity and containing an internal cavity and a plug, wherein the container is retained in the cavity and, is at least partially surrounded by a cavity wall. The pump unit cartridge also includes at least one locking projection to prevent movement of the container towards the base of the cavity, a spike located in the cavity and extending perpendicular to the base of the cavity, which is configured to pierce the container when the container is moved towards the base of the cavity, a peristaltic pump head located in the housing, a fluid outlet, and a tube fluidly connecting the spike to the fluid outlet. The head of the peristaltic pump is in contact with at least a portion of the tube.

[0008] In some embodiments, the infusion system includes a pump unit having a pump unit body, and a first cavity defined in the pump unit body and configured to receive and support a container, the first cavity including a cavity base and a wall cavities. The pump unit also includes a first tenon located in the cavity and extending perpendicular to the base of the cavity, which is configured to pierce the container when the container is placed in the cavity, a motor unit receptacle formed in the pump unit housing, a peristaltic pump head located in the housing, a fluid outlet, and a tube fluidly connecting the first spike to the fluid outlet, the head of the peristaltic pump being in contact with at least a portion of the tube. The infusion system also includes a motor unit located in the motor unit receiver and having a battery and a motor electrically coupled to the battery and having an output shaft directly coupled to the head of the peristaltic pump. The motor unit can be removed from the motor unit receiver.

[0009] It should be understood that the above ideas, as well as additional ideas discussed below, can be combined in any suitable manner, since the present invention is not limited in this regard. In addition, other advantages and novelties of the present invention will become apparent from the following detailed description of various non-limiting embodiments when taken in conjunction with the accompanying figures.

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings are not necessarily drawn to scale. In the drawings, the same or similar components illustrated in different figures may be represented by like reference numerals. For simplicity, not every component may be identified on every drawing.

[0011] FIG. 1 is a front perspective view of one embodiment of an infusion system;

[0012] FIG. 2 is a rear perspective view of the infusion system of FIG. 1;

[0013] FIG. 3 is a first exploded view of the infusion system of FIG. 1;

[0014] FIG. 4 is a second exploded view of the infusion system of FIG. 1;

[0015] FIG. 5 is a front view of the infusion system of FIG. 1;

[0016] FIG. 6 is a schematic side view of one embodiment of a motor and peristaltic pump head;

[0017] FIG. 7 is a schematic side view of one embodiment of an infusion system;

[0018] FIG. 8 is a schematic side view of one embodiment of an infusion system;

[0019] FIG. 9A is a schematic side view of one embodiment of an infusion system container and cavity in a first position;

[0020] FIG. 9B is a schematic side view of the container and cavity of FIG. 9A in the second position;

[0021] FIG. 10A is a schematic side view of another embodiment of an infusion system container and cavity in a first position;

[0022] FIG. 10B is a schematic side view of the container and cavity of FIG. 10A in second position;

[0023] FIG. 11A is a schematic side view of another embodiment of the infusion system container and cavity in a first position;

[0024] FIG. 11B is a schematic side view of the container and cavity of FIG. 11A in the second position;

[0025] FIG. 12 is a schematic side view of one embodiment of a tenon;

[0026] FIG. 13 is a schematic top view of one embodiment of a pump unit;

[0027] FIG. 14 is a schematic side view of the pump unit of FIG. 13;

[0028] FIG. 15 is a schematic side view of the pump unit of FIG. 13 when used with one embodiment of the propulsion unit and containers;

[0029] FIG. 16 is a schematic view of one embodiment of a pump unit fluid distribution system;

[0030] FIG. 17 is a schematic view of one embodiment of an infusion set;

[0031] FIG. 18 is a schematic side view of another embodiment of an infusion system.

DETAILED DESCRIPTION

[0032] In some embodiments described herein, the infusion pump system includes a peristaltic pump unit. The inventors have realized the advantages of a peristaltic pump unit for the delivery of large molecule medical fluids. The inventors realized that a peristaltic pump that does not come into fluid contact with the medical fluid may allow the medical fluid to be delivered to the patient with less particulate matter generation than other pump delivery methods. The peristaltic pump units of the embodiments described herein may also have the advantage of easier installation and operation for fluid infusion, such that the peristaltic pump unit can be operated at home or otherwise outside a healthcare facility.

[0033] Some traditional infusion pump systems are large, complex and expensive equipment that can be difficult to use. Many traditional infusion pumps are non-portable and are fluidly coupled to a medical fluid container or IV bag. Thus, these traditional infusion pumps may require regular sterilization for their use, which can be a lengthy process. Additionally, many traditional infusion pumps operate using some recyclable parts, but these parts are often delivered to the patient as many separate components that may require assembly before use.

[0034] In connection with the above, the inventors have also realized the advantages of an infusion system using a modular design that includes a motor unit and a pump unit. The propulsion unit may include durable, reusable parts such as the motor, battery, circuit board, communication devices, etc. The pump unit may be disposable and include a fluid distribution system (eg, a spike, an air inlet, and a fluid outlet) as well as a peristaltic pump head. The pump unit may receive a motor unit, or vice versa, so that durable components of the motor unit (eg, a motor) can be coupled to the peristaltic pump head so that fluid can be conducted through the fluid distribution system. In some embodiments, the motor unit does not come into fluid contact with the medical fluid so that the motor unit can be reused multiple times with different pump units. Each pump unit can be disposed of after each use. The pump unit can be integrated into the housing so that installation of the infusion system can simply be reduced to positioning the motor unit in a motor unit receptacle formed in the pump unit. This design may allow for easy setup of the infusion system because the motor unit can be automatically aligned and connected to the pump unit when the motor unit is placed in the motor unit receptacle. Additionally, unlike traditional peristaltic pumping systems, since the fluid distribution system and the peristaltic pump head can both be housed in the pump assembly, any rollers or fingers of the peristaltic mechanism can be pre-aligned with the fluid distribution system so that the user does not need to make no additional adjustments. In some embodiments, the pump assembly may include a cavity having a spike and configured to receive and pierce a container of medical fluid such that preparing the pump assembly for the infusion process simply involves inserting the vial into the cavity. In addition to the above, the infusion system of the embodiments described herein can be sized and shaped to be worn on a patient's clothing without causing significant inconvenience to the patient.

[0035] In traditional infusion systems, medicinal fluids are typically stored in separate containers or vials, or stored in refillable, reusable reservoirs contained within the infusion pump. When medical fluids are stored in individual vials, the containers are often pierced or opened manually so that the fluid can eventually flow into the infusion set and be delivered to the patient.

[0036] In connection with the above, the inventors have also realized the advantages of an infusion system that includes a pump unit cartridge having both a fluid distribution system and an unused medical fluid container built into the pump unit cartridge. The medical fluid container may be movably supported within the cartridge housing of the pump unit so that during the infusion process, the user can apply force to the container to pierce the container without having to handle a separate container. In some embodiments, one or more locking projections may prevent the container from being pierced until a threshold force is applied to the container to prevent the container from being unintentionally pierced. Such a design may facilitate delivery of the medical fluid to the patient.

[0037] In some embodiments, the pump unit for the infusion system includes a housing having a cavity and a receptacle for the motor unit formed therein. In one embodiment, the cavity and receptacle for the motor block may be formed on one side of the housing (eg, the top side) opposite the base of the pump block. The housing wall may enclose a cavity and a receptacle for the motor unit. Thus, in some embodiments, the pump unit may serve as a base into which the medical fluid container and motor unit may be placed by a healthcare professional or patient. The cavity can be sized and shaped to align the container relative to the pump unit after receiving the container. Likewise, the motor block receiver may also position the motor block in a desired position relative to the pump unit when the motor block is placed in the motor block receiver. The pump unit may also include a fluid distribution system, as well as a peristaltic pump head configured to move fluid through the fluid distribution system. In some embodiments, the peristaltic pump head may be part of a rotary peristaltic pump including a plurality of rotary rollers (eg, three rollers) that sequentially contact a portion of the fluid distribution system to conduct fluid through the fluid distribution system. In other embodiments, the peristaltic pump head may be part of a linear peristaltic pump including a plurality of arrayed compression elements that are slid along parallel axes to sequentially contact a portion of the fluid distribution system and direct fluid through the fluid distribution system. In each embodiment, the peristaltic pump head may include an input shaft configured to be coupled to an output shaft of the motor unit driving the peristaltic pump head. The pump unit housing wall may enclose the fluid distribution system and the peristaltic pump head such that the pump unit is a closed structure.

[0038] In some embodiments, the motor unit for the infusion system includes a motor unit housing sized and shaped to be accommodated within a motor receptacle of the pump unit. In one embodiment, the propulsion unit may include a motor having an output shaft and a battery electrically coupled to the motor. The motor may be a DC motor, a brushless motor, a servo motor, or any other suitable electric drive. When the motor block is connected to the pump block, the output shaft can be connected to the input shaft of the peristaltic pump head of the pump block. For example, the output shaft or input shaft may include a press fit coupling configured to receive another shaft to provide a suitable friction fit so that torque can be transmitted between the shafts. Of course, in other embodiments, any suitable connection may be used, such as magnetic couplings or other quick-connect or quick-disconnect couplings. In some embodiments, the motor unit may include a controller (eg, an electronic module on a printed circuit board having a processor configured to execute instructions stored in volatile or non-volatile memory) configured to control the actuation and speed of the motor. According to this embodiment, the motor unit may include a user interface located on the body of the motor unit, which includes a screen providing information to the user, as well as one or more buttons or other input devices. In some embodiments, the propulsion unit may include a communications device (e.g., a radio transceiver device that transmits and receives radio signals using one or more of Bluetooth, Bluetooth Low-Energy, Wi-Fi, 802.15.4, ZigBee, GSM, HSPA, CDMA protocols and/or any other suitable protocol) that communicates with a remote device such as a mobile phone or personal computer. According to this embodiment, the user can control and/or monitor the motor unit using a remote device.

[0039] It should be noted that although in the embodiments described herein, the pump block receives the motor block, the input shaft receives the output shaft, any suitable connection between the motor block and the pump block may be used, since the present invention is not limited thereto respect. For example, in one embodiment, the motor unit may include a pump unit receiver configured to receive the pump unit. In some embodiments, the output shaft of the motor unit may receive the input shaft of the pump unit. In one embodiment, the pump assembly and the motor assembly may include a single receiver and a corresponding housing portion that is integrated into the corresponding receiver such that the pump assembly and the motor unit are mutually interlocked.

[0040] In some embodiments, an infusion set for an infusion system includes a fluid connector, tubing, and a set of needles. The fluid connector may be in fluid communication with the tubing and is configured to be in fluid connection of the infusion set to the fluid outlet of the pump unit. In some embodiments, the fluid connector may be a Luer-lock connector. The needle set may include at least one needle (eg, one needle, two needles, three needles, four needles, etc.) configured to be inserted into a patient's body. In some embodiments, each of the needles may be configured as a butterfly needle. Of course, any suitable infusion needle can be used, since the present invention is not limited in this regard.

[0041] According to the embodiments described herein, one or more components of the infusion system may be disposable items. In one embodiment, the pump unit and infusion set may be disposable items, while the motor unit may be reusable. All components in contact with medical fluid can be disposed of in a disposable pump unit and infusion set, making installation and operation of the pump easier for the user.

[0042] In some embodiments, the pump assembly may be combined with an integral medical fluid container to form a pump assembly cartridge allowing the user to easily set up the pump assembly for infusion. In one embodiment, a container containing a medical fluid may be located in and retained in a cavity formed in the body of the pump unit. The container may move (eg, slide) in the pump unit between a first position and a second position. A spike or other piercing element located in the cavity may be configured to pierce the container as the container is moved from a first position to a second position to establish fluid communication of the container with the fluid distribution system of the pump unit. In some embodiments, at least one locking projection formed on the pump unit or container may prevent the container from moving to a second position to avoid unintentional puncturing of the container. In one embodiment, applying a threshold force to the container may allow the container to move to a second position and be punctured.

[0043] In some embodiments, the pump unit and/or motor unit may include a clip configured to allow the pump unit and/or motor unit to be worn on clothing. For example, in one embodiment, the clip may be a belt clip formed on the body of the pump unit that is removably attached to the patient's lap belt. In another embodiment, the clip may be in the form of a carabiner or spring latch configured to attach to a belt loop on the patient's pants. Of course, any suitable design can be used to allow the patient to wear the pump unit and/or the motor unit, since the present invention is not limited in this regard.

[0044] Referring to the figures, specific non-limiting embodiments are described in more detail. It should be understood that the various systems, components, features and methods described with respect to these embodiments may be used individually and/or in any combination desired, since the invention is not limited to only those specific embodiments described herein.

[0045] FIG. 1 is a front perspective view of one embodiment of an infusion system that includes a pump unit 100, a motor unit 200, and a container 300. According to the configuration shown in FIG. 1, a pump unit, a motor unit, and a container unit are connected to each other to form an infusion system that can be connected to an infusion set to deliver medical fluid from the container 300 to a patient.

[0046] As shown in FIG. 1, the pump block 100 includes a pump block housing 101 formed by a housing wall 102 and a housing base 104. The housing wall forms the perimeter of the pump block and encloses the other components of the pump block. The pump block body defines a cavity 106 configured to receive and position the container 300, as well as a motor block receptacle 110 configured to receive and position the motor block 200.

[0047] In one embodiment, as shown in FIG. 1, cavity 106 includes at least one container slot 108 that extends from the top portion of housing wall 102 to housing base 104. The container slot allows the user to see the container located in the cavity so that the user can determine the level of fluid inside the container. Such a design may allow the user to determine the presence of an occlusion or otherwise verify that the infusion process is proceeding normally as the fluid exits the container. Of course, although in FIG. 1 shows a groove, any suitable window or opening may be used to allow the user to see the container located in the cavity, since the present invention is not limited in this regard. In some embodiments, the housing wall may be made of a transparent or translucent material such that the container and the level of fluid therein are visible.

[0048] In some embodiments, the pump block housing 101 includes a cube-shaped portion 115 and a cylindrical portion 113 having a circumferential wall 133. The cylindrical portion 113 may define a cavity 106, and the cube-shaped portion may define an area of the pump block housing 101 receiving the motor block 200 In some embodiments, the cylindrical portion 113 is longer than the cube-shaped portion 115 in the vertical direction.

[0049] According to the embodiment shown in FIG. 1, the receiver 110 for the motor unit receives and supports at least two sides of the motor unit 200. More specifically, in the embodiment of FIG. 1, the motor block receptacle includes at least a vertical portion 112 and a horizontal portion 114 that support a side of the motor block and a base of the motor block, respectively. The vertical portion 112 may include two edges, and the horizontal portion 114 may include three edges such that the motor block is supported by at least five edges of the motor block receiver. This design can provide a more rigid connection between the motor block and the pump block to transmit torque between the output shaft of the motor block and the input shaft of the pump block. Of course, the pump assembly may support any suitable number of sides of the motor block, including, but not limited to, one, two, three, and four sides.

[0050] As shown in FIG. 1, the motor block 200 includes a motor block housing 202 that houses various components of the motor block and is at least partially located in the motor block receiver 110. In the embodiment shown in FIG. 1, the motor unit housing 202 is arranged in a cuboid shape, although other shapes may be used in other embodiments. Additionally, as noted previously, although in the embodiment of FIG. 1, the pump block housing 101 receives the motor block housing 202, in other embodiments, the motor block housing may receive the pump block housing. In still other embodiments, the motor unit housing may both receive the pump unit (eg, in a pump unit receiver) and be located in the pump unit (eg, in a motor unit receiver), as the present invention is not limited in this regard. The motor block according to FIG. 1 also includes a user interface consisting of buttons 204 and a display device screen. Buttons 204 may be used to control the execution of functions of the motor unit to, among other functions, respectively start, change or stop the infusion process. The buttons may be in the form of mechanical switches, membrane switches, capacitive buttons, and/or any other suitable input device. The display device screen may display information to the user regarding the motor block or the infusion process. The display device screen may be a liquid crystal screen, an LED screen, an electronic ink screen, an OLED screen, or any other suitable display device.

[0051] According to the embodiment of FIG. 1, the container 300 used in conjunction with the pump unit 100 may be configured as a bottle having a container wall 302 and a container base 304 defining an internal volume in which a medical fluid containing a medicinal substance is located. According to the embodiment of FIG. 1, the container may consist of glass, although other suitable materials such as plastic may be used, since the present invention is not limited in this regard. The wall of the container and/or the base of the container may be transparent so that the fluid inside the container is visible to the user. The container may include an opening opposite the container base 304 sealed with a stopper. The plug may be made of rubber, silicone, or other material that can be pierced or otherwise ruptured by a spike or other piercing element located in the cavity 106. According to the embodiment of FIG. 1 cavity 106 is configured to receive and adjust the position of a plurality of containers 300 of different sizes. For example, while in FIG. 1 shows a 50 ml container; any container of appropriate size may be used, including, but not limited to, containers having a volume greater than or equal to 1.25 ml, 2.5 ml, 5 ml, 10 ml, 20 ml, 30 ml , 40 ml, 50 ml, 75 ml, 100 ml, 200 ml and 300 ml. Examples of the container and its operation in conjunction with the cavity are further described with reference to the exemplary embodiments shown in FIG. 9A-11B.

[0052] FIG. 2 is a rear perspective view of the infusion system of FIG. 1. According to the embodiment shown in FIG. 2, the pump block 100 includes a second container slot 108 that extends from the top portion of the pump block housing 101 to the housing base 104 and allows the user to see the fluid level of the container 300 located in the cavity 106. Of course, although the pump block of FIG. 2 includes two container slots, any suitable number of container slots, windows or openings may be used as the present invention is not limited in this regard. As shown in FIG. 2, the pump unit includes a fluid outlet 120 that is part of a fluid distribution system located in the pump unit housing. In some embodiments, the fluid distribution system includes a fluid outlet, a conduit, at least one spike, and an air inlet. The fluid outlet may be in the form of a luer lock or other suitable fluid connector for connection to an infusion set.

[0053] According to the embodiment shown in FIG. 2, the engine block 200 includes a port 208 that can be used to recharge a battery located in the engine block housing 202. In other words, port 208 may receive a cable (eg, a DC power cable, USB cable, or other suitable cable) providing external power to recharge the engine unit's internal battery. Thus, in this embodiment, the motor unit can be wirelessly controlled so that the patient is not constrained or tied to an external power source and can remain mobile. In other embodiments, a power cable may be coupled to the motor unit through port 208 to power the motor unit directly from an external power source. In some embodiments, port 208 may also be used to transmit information to an external device, such as a mobile phone or personal computer. Such a port may be used, among other applications, to allow one or more engine block parameters to be generated or diagnostic or operational data to be downloaded from the engine block.

[0054] FIG. 3 and 4 are respectively first and second exploded views of the infusion system of FIG. 1. As shown in FIG. 3 and discussed above, the pump unit of FIG. 3 houses a fluid distribution system that moves fluid from container 300 to fluid outlet 120. The fluid distribution circuit in the illustrated embodiment includes a tube 122 and a spike 140. The tube fluidly connects the spike to a fluid outlet 120, wherein a portion of the tube engages the head of a peristaltic pump 130, which is also located within the pump housing 101 block. The spike 140 is configured to pierce the stopper of the container 300 and fluidly connects the internal fluid-filled cavity of the container to the fluid distribution system. In addition, the fluid distribution circuit includes an air inlet (for example, see FIG. 16) that is fluidly coupled to the spike and allows air to flow into the attached container to prevent the formation of vacuum that could restrict or slow the flow of fluid. environment from the container. According to the embodiment shown in FIG. 3-4, the peristaltic pump head 130 is a rotary peristaltic pump head and includes a plurality of rollers that sequentially engage with a portion of the tube 122 to propel fluid located in the tube toward a fluid outlet. In some embodiments, the peristaltic pump head may advance a single bolus of fluid, while in other embodiments, the peristaltic pump head may advance fluid continuously. According to the embodiment shown in FIG. 3-4, the housing wall 102 encloses the tube 122, the peristaltic pump head 130, and the spike 140. In addition, the tube 122, the peristaltic pump head 130, and the spike 140 are located below the uppermost portion 13 of the pump assembly 100.

[0055] As shown in FIG. 3, the motor unit housing is configured with a first section 202A and a second section 202B configured to be secured to each other around internal components of the motor unit 200. In the illustrated embodiment, the motor unit includes a controller circuit board 210 (e.g., a printed circuit board electronics module ), battery 212, and motor 220. The battery is electrically coupled to the motor and/or circuit board 210, which in turn controls the delivery of electrical energy from the battery to the motor 220. The motor 220 shown in FIG. 3 is a DC motor, although other types of motor may be used. The controller circuit board 210 controls the on or off state and the speed of the motor to accordingly control the speed of the head of the peristaltic pump 130 to ultimately control the rate of fluid flow through the fluid distribution system of the pump unit 100. The circuit board 210 also electrically coupled to screen 206, which communicates information about the motor unit (eg, operating status, pumping speed, etc.) to the user of the infusion system.

[0056] According to the embodiment shown in FIG. 3, cavity 106 includes a cavity wall 103 and a cavity base 107. The cavity wall and the base of the cavity define the volume of the cavity adapted to receive the container 300. The tenon 140 is located at the base of the cavity and projects perpendicularly from the base of the cavity such that the tenon is oriented along the longitudinal axis of the cavity volume. In the embodiment of FIG. 3, the cavity wall is configured such that the container 300 is aligned and guided by the cavity wall as the container is moved toward the base of the cavity. Specifically, at least a portion of the container wall 302 contacts at least a portion of the cavity wall 103 to orient the container relative to the tenon 140. This design ensures that the tenon is aligned with the container to facilitate piercing of the container.

[0057] In FIG. 4 shows the assembled motor block 200 of FIG. 1, disconnected from the pump unit 100. As shown in FIG. 4 and discussed previously, the motor unit receiver 110 includes a vertical portion 112 and a horizontal portion 114 receiving a corresponding portion of the motor unit housing 202. In other words, the motor unit body is sized and shaped to match the size and shape of the motor unit receiver such that the motor unit is securely housed and supported in the motor unit receiver. Moreover, in the embodiment of FIG. 4, the motor block receiver aligns the motor block with the peristaltic pump head 130 to achieve a reliable mechanical connection between the motor block motor and the peristaltic pump head.

[0058] FIG. 5 is a schematic front view of the infusion system of FIG. 1. As shown in FIG. 5 and discussed previously, the pump block includes a housing wall 102 enclosing components of the pump block. In the embodiment of FIG. 5, the container slot 108 is formed in the housing wall and allows the user to view a dominant portion of the container 300 while the housing wall still extends along most of the longitudinal length of the container. In addition, the motor unit receiver includes a vertical portion 112 and a horizontal portion 114 supporting the motor unit 200 on both sides. As shown in FIG. 5, fluid outlet 120 is coupled to an infusion set infusion tube 402, which may be fluidly coupled to a set of needles for administering infusion to a patient.

[0059] FIG. 6 is a schematic side view of one embodiment of motor 220 and peristaltic pump head 130. According to the embodiment of FIG. 6, the head of the peristaltic pump is made in the form of a three-roller rotary head of the peristaltic pump. The peristaltic pump head includes a mounting support 132 carrying a plurality of rollers 134. Each of the rollers is rotatably supported within the housing so that the roller engaged with the pump assembly tube 122 can roll along the tube. This design can limit frictional wear of the tube. The peristaltic pump head also includes an input shaft 136 and a shaft 138 about which the mounting support rotates. This shaft may be supported in the pump housing such that the mounting support is rotatably connected to the mounting support. According to the embodiment of FIG. 6, the input shaft 136 is configured to receive an engine output shaft 222 (eg, when the engine block is located in a receiver for the engine block). Specifically, in the embodiment of FIG. 6, input shaft 136 receives engine output shaft 222 using a press fit, mechanical locking, or any other suitable arrangement so that torque can be transmitted between the output shaft and the input shaft. Thus, in the embodiment of FIG. 6 The output shaft is directly connected to the peristaltic pump head.

[0060] As shown in FIG. 6, motor 220 includes an output shaft and a pair of motor terminals 224. Engine according to FIG. 6 is designed as a DC motor that receives voltage at the motor terminals and produces torque at output shaft 222. The speed and torque of the motor can be controlled by the voltage applied to the terminals, either through analog voltage or through pulse width modulation (PWM). . Thus, in some embodiments, a controller (eg, an electronic module on a printed circuit board having a processor executing instructions stored in volatile or non-volatile memory) can control torque and speed of the motor. As shown in FIG. 6, motor terminals 224 are connected via leads 215 to corresponding terminals 214 of battery 212. The battery may be any suitable power source that supplies electrical power to motor 220 and/or controller. For example, battery 212 may be a lithium ion, lithium polymer, nickel cadmium, nickel metal hydride, or any other suitable battery. In some embodiments, the battery 212 can be recharged and reused for multiple infusion processes. In other embodiments, the battery may be replaceable and periodically replaced during multiple infusion processes.

[0061] FIG. 7 is a schematic side view of one embodiment of an infusion system, showing the interface between the pump unit 100 and the motor unit 200. According to the embodiment of FIG. 7, the motor unit includes a motor 220 and a battery 212 similar to those shown in FIG. 6. The pump block includes a peristaltic pump head 130, which is rotatably mounted in the pump block and rotates about the shaft 138. Thus, in the configuration shown in FIG. 7, motor 220 may transmit torque to peristaltic pump head 130 via an output shaft 222 coupled to an input shaft 136. As noted previously, although the input shaft 136 receives an output shaft 222 in the embodiment of FIG. 7, in other embodiments, the output shaft may receive an input shaft. According to the embodiment of FIG. 7, the appropriate shape of the motor block housing 202 and the motor block receiver 110 can automatically orient and align the output shaft and the input shaft for proper engagement when the motor block is placed in the pump block.

[0062] As shown in FIG. 7, the pump unit 100 is configured to receive the motor unit 200 in the motor unit receiver 110. The receiver for the motor unit is sized and shaped to receive the housing 202 of the motor unit. In the embodiment of FIG. 7, protrusions 226 of the motor block are formed on the outer side of the body of the motor block and are configured to engage with latches 116 of the pump block. According to the embodiment of FIG. 7, latches 116 are integral to the motor block receptacle and include a hook lug 117, a hinge 118, and a lever 119. The latch is rotatable between an engaged position and a disengaged position about the hinge 118. The hinge may be a pin, a flexible joint, or any other suitable design to allow the latch to rotate. In the engaged position, the engagement protrusion 117 projects into the motor block receptacle 110 such that the engagement protrusion overlaps with the corresponding motor block protrusion 226. Thus, in the engaged position, the latches prevent the motor unit 200 from being removed from the motor unit receptacle to ensure that any accidental contact (eg, a push) does not dislodge the motor unit from the motor unit receptacle. In addition, the engagement projections may cause the output shaft 222 to engage the input shaft 136. According to the embodiment of FIG. 7, levers 119 are user-controllable components that can be used to rotate the latches from an engaged position to a disengaged position. In other words, the levers 119 may be used to rotate the latches in the direction shown by the arrow to disengage the engaging protrusions 117 from the motor block protrusions 226. Thus, in some embodiments, in the disengaged position, the latches do not prevent the motor assembly from being removed from the pump assembly so that the motor assembly can be removed and reused with other pump assemblies.

[0063] According to the embodiment of FIG. 7, the latches 116 are rotatable in a "cross-rotation" pattern such that a force applied to the motor block body 202 to remove the motor block 200 from the motor block receptacle 110 causes the latches to further engage the motor block protrusions 226. In other words, the force transmitted from the motor block protrusions 226 to the latch engagement protrusion 117 produces a torque on the latches in the direction of the engaged position rather than the disengaged position. Such a design may help securely engage the motor unit in the motor unit receptacle such that the motor unit can be removed only if the user presses the levers 119. Of course, in other embodiments, the latches may only prevent the motor unit from being removed until a threshold force for extraction, since the present invention is not limited in this regard. In some embodiments, the latches 116 may be biased toward the engaged position. For example, a torsion spring, a compression spring, or a tension spring may be used to deflect the latches toward the engaged position. As another example, the latch may be an elastic flexible element that produces a biasing force when deviated from a resting position. Of course, any suitable deflection structure can be used, since the present invention is not limited in this regard.

[0064] In the embodiment of FIG. 7, the latches 116 are movable to a disengaged position when the motor unit 200 is placed in the motor unit receiver 110. In other words, the latch engagement projections 117 are shaped such that a force applied to the motor unit in the direction of the motor unit receptacle produces a torque on the latches that rotates the latches in the direction of the disengaged position (eg, in the direction of the arrows). This design allows the motor unit to be easily coupled to the pump unit 100 by applying a single force without manipulating the arms 119. Of course, other embodiments may be used in which one or more latches 116 may be moved to an unlatched position prior to coupling the motor unit to the motor unit receiver. , since the present invention is not limited in this regard.

[0065] It should be noted that although in the embodiment of FIG. 7 depicts two latches 116 and corresponding motor block protrusions 226, any suitable number of latches and motor block protrusions or latch receptacles may be used as the present invention is not limited in this regard. For example, a single latch and a corresponding motor block projection or latch receptacle may be used. It should also be noted that although in the embodiment of FIG. 7, the pump block includes latches 116 and the motor block 200 includes motor block lugs 226; in other embodiments, the latches may be located on the motor block and the latch receptacles or corresponding lugs may be located on the pump block. In yet other embodiments, the pump assembly and motor assembly may include at least one latch and at least one corresponding latch receptacle or protrusion. In some embodiments, instead of being held together by latches, the pump assembly and motor assembly may be held together by a friction fit, a locking connection, or any other suitable configuration.

[0066] FIG. 8 is a schematic side view of one embodiment of an infusion system, showing an alternative latching arrangement between the pump assembly 100 and the motor assembly 200. As in the embodiment of FIG. 7, the pump assembly includes two latches 116, each of which has a hook lug 117, a hinge 118, and a lever 119. However, unlike the embodiment of FIG. 7, the hinge 118 of each latch is located on the opposite side of the latch. In other words, the hinge is located on the side of the latch facing the housing base 104 such that the direction of rotation of the latch between the engaged and disengaged positions is the opposite of the embodiment of FIG. 7. Such a design can provide an exact match between the hook protrusions 117 and the motor block protrusions 226, eliminating interference or jamming between the latches and the motor block body. Moreover, in the embodiment of FIG. 8, the motor unit is held in the motor unit receptacle 110 until a threshold force in the withdrawal direction is applied to the motor unit. When force is applied to remove the motor unit, the motor unit protrusions 226 apply a torque to the latches 116 around each hinge to rotate the latch toward the disengaged position. The latch 116 can be moved in the direction of the engagement position to hold the motor unit in the housing until a threshold withdrawal force is applied to the motor unit. This extraction threshold can be adjusted by changing the geometry and displacement force to any suitable value. Such a design may allow a user to connect and disconnect the motor unit 200 from the pump unit simply by applying force.

[0067] In FIG. 9A-11B illustrate various embodiments of a container and a container cavity formed in the pump unit. According to the embodiments described below, the container and the pump unit can be integrated with each other in the form of a pump unit cartridge. In other words, the container can be retained in the cavity while remaining fluidly isolated from other components in the pump assembly. According to the embodiments of FIGS. 9A-11B, the container and/or pump assembly includes at least one locking projection that prevents movement of the container toward the tenon or other fluid connection so that the container remains fluidly isolated from other components of the pump assembly. The user may press the container or otherwise activate the pump unit to establish fluid communication of the container with the fluid distribution system of the pump unit. This design allows you to simply set up the infusion process.

[0068] FIG. 9A is a schematic side view of one embodiment of the container 300 and infusion system cavity 106 in a first position. As shown in FIG. 9A, the container is in the form of a vial and includes a container wall 302 and a container base 304 defining an internal volume filled with medical fluid. The container also includes a neck 306 defining an opening sealed by a stopper 308. The stopper may be made of rubber, silicone, or other suitable material. The container also includes container projections 310 formed on the outside of the container wall 302. According to the embodiment of FIG. 9A, the cavity 106 includes a cavity wall 103 and a cavity base 107 that are sized and shaped to receive container 300. A tenon 140 is located in the cavity and projects perpendicularly from the cavity base such that the tenon is aligned with the longitudinal axis of the cavity and container 300. Thus, as the container is moved toward the cavity base 107, the tenon 140 pierces the plug 308, thereby bringing the interior of the container into fluid communication with the fluid distribution system of the pump unit.

[0069] According to the embodiment of FIG. 9A, the cavity includes a universal matching portion 111, which in the present embodiment is configured as a circular inclined surface directed toward the tenon. The universal alignment portion is configured to receive, orient, and align multiple containers of different sizes with the tenon 140. For example, a container having a smaller diameter than that shown in FIG. 9A can come into contact with the universal alignment portion and become aligned with the tenon even if the cavity wall 103 is spaced apart from the smaller container. Thus, multiple containers of different sizes can be used with a single pump unit 100, which can improve simplicity and reduce manufacturing costs. Of course, although in FIG. 9A shows an inclined surface, any suitable universal alignment portion may be used, including guides, bias elements, or other configurations. For example, in some embodiments, the universal matching areas may be moved to accommodate larger containers. According to this embodiment, the universal alignment portions may be spring-loaded toward a resting position where the universal alignment portions support the smallest container. The universal matching portions can move against the spring force to receive and support a larger container.

[0070] As shown in FIG. 9A, cavity 106 includes locking projections in the form of container retainers 150 and breakable projections 152 to restrict movement of the container within the cavity. The container retainers engage the container projections 310 to prevent the container from being removed from the cavity. Thus, the container and pump unit 100 can function as an integrated unit that is delivered to the patient as a single unit. The frangible projections contact the container wall 302 and prevent the container from moving toward the cavity base 107. In other words, the breakable projections support the weight of the container 300 and prevent the plug 308 from moving towards the tenon 140 so that the container remains unpunctured. Thus, in the position shown in FIG. 9A, the container is fixed relative to the cavity 106, and the pump assembly can be handled or shipped without fear of accidentally puncturing the container. The rupture protrusions 152 may prevent the container from moving toward the cavity base 107 until a threshold force is applied to the container, at which point the rupture protrusions may rupture to allow the container to move toward the cavity base and be pierced by a spike, as shown in FIG. 9B. Thus, a user preparing to administer an infusion can apply a single threshold force to the container to prepare the pump unit for infusion without having to position the container in the proper location.

[0071] FIG. 9B is a schematic side view of container 300 and cavity 106 of FIG. 9A in the second position. As shown in FIG. 9B, the container has moved towards and contacted the cavity base 107 in comparison with FIG. 9A. Accordingly, the spike 140 pierces the plug 308 to bring the interior of the container into fluid communication with a fluid distribution system connected to the spike. In this way, the fluid can be removed from the container and delivered to the patient. As shown in FIG. 9B, the breakable projections are broken by applying a threshold force to the container. For example, the threshold force may be applied by a user causing a pushing force to be applied to the container base 304.

[0072] It should be noted that although in FIG. 9A-9B show two breakable protrusions 152, any suitable number of breakable protrusions may be used to resist movement of the container 300 until a threshold force is applied. In addition, although the breakable projections shown in FIG. 9A-9B are shaped like fingers, any suitable form of breakable protrusions may be used.

[0073] FIG. 10A is a schematic side view of another embodiment of the container 300 and infusion system cavity 106 in a first position. As in the embodiment of FIG. 9A-9B, container 300 is held in cavity 106 by container retainers 150 that engage container projections 310 and prevent removal of the container. According to the embodiment of FIG. 10A, the cavity 106 includes a locking projection in the form of a locking plate 154 located between the cavity tenon 140 and the container plug 308. The locking plate 154 prevents the container from moving toward the cavity base 107. In this way, the locking plate maintains the position of the container relative to the cavity. Unlike the embodiment of FIG. 9A-9B locking plate is not intended to break during use. Instead, the locking plate includes a tab 155 that a user can pull to remove the locking plate from the cavity. Thus, to pierce the container 300, the tab 155 can be pulled and then the container is pressed to pierce the plug 308 and bring the container into fluid communication with the fluid distribution system, as shown in FIG. 10B.

[0074] FIG. 10B is a schematic side view of container 300 and cavity 106 of FIG. 10A in the second position where the plug 308 is pierced by the tenon 140. As noted above, the locking plate is removed from the cavity. In the embodiment of FIG. 10B, the locking plate can be removed by a tongue used to pull the locking plate out of the locking plate slot 109 so that the container is able to move to the downward or engaged position shown in FIG. 10B, from the up or unlocked position shown in FIG. 10A.

[0075] FIG. 11A is a schematic side view of another embodiment of the container 300 and infusion system cavity 106 in a first position. As shown in FIG. 11A and also as in the embodiments of FIG. 9A-10B, the cavity includes a cavity wall 103 and a cavity base 107 sized and shaped to receive a container. A tenon 140 projects from the base of the cavity and is configured to pierce the container plug 308 when the container is moved from the up or unlocked position shown in FIG. 11A to the down or engaged position shown in FIG. 11B. However, unlike previous embodiments, the container 300 is not removable from the cavity or moved toward the base of the cavity until a threshold force is applied. Instead of having rigid projections, the cavity includes locking projections in the form of compressible joints 156 located between and in contact with the cavity wall 103 and the container wall 302. The compressible joints 156 are composed of a compressible material, such as rubber, silicone, or other suitable material, such that the joints 156 are compressed between the wall of the cavity and the wall of the container. Thus, the compressible joints create static and kinetic frictional forces between the container and the cavity wall, which counteract the movement of the container relative to the cavity. In some embodiments, the compressible connections may be in the form of O-rings located around the circumference of the cavity wall 103.

[0076] In the embodiment of FIG. 11A, the compressible joints are configured such that the static frictional force is sufficient to prevent movement of the container until a threshold force is applied to the container. For example, gravity, shock, or impact may not be sufficient forces to move the container relative to the cavity. Thus, the infusion system may be delivered to the user with the container secured in this manner to help avoid inadvertent puncture of the stopper 308. When setting up the infusion system for infusion, a threshold force may be applied to the container 300 (e.g., container base 304) to move the container in the direction the base of the cavity for piercing the plug 308 with a tenon 140, as shown in FIG. 11B.

[0077] FIG. 11B is a schematic side view of container 300 and cavity 106 of FIG. 11A in the second position. As shown in FIG. 11B, plug 308 is pierced by tenon 140 while the container is in the down or engaged position. From the position shown in FIG. 11A, a threshold force has been applied to the container to move the container against the resistive frictional forces of the compressible joints 156.

[0078] Although in the embodiment of FIG. 11A-11B show two compressible joints 156, any suitable number of compressible joints may be used to provide the required force to resist movement of the container 300. For example, one compressible joint or three compressible joints may be used. In addition, although with reference to FIG. 11A-11B discuss annular compressible joints, any suitable continuous or discontinuous form of compressible joints may be used, and the compressible joints may contact any portion of the container wall 302 to generate resistive forces. For example, the compressible connections can be made in the form of a plurality of individual patches of material spaced apart from each other. In addition, the compressible joints may be primarily located on either the cavity wall 103 or the container wall 302, since the present invention is not limited in this regard.

[0079] It should be noted that the embodiments described with reference to FIGS. 9A-11B, can be used in any required combination. In other words, breakable protrusions, locking plates and compressible joints can be used in the cavity individually, partially combined or completely combined with each other, since the present invention is not limited in this regard.

[0080] FIG. 12 is a schematic side view of one embodiment of a spike 140 that may be used in the infusion systems of the embodiments described herein. As shown in FIG. 12, the tenon includes a tenon body 142 that includes a first cavity 144A and a second cavity 144B. The tenon body is connected to the tenon base 146, which houses a first tube 122 and a second tube 124 extending the fluid channels defined by the first cavity and the second cavity, respectively. The tenon body 142 is configured to pierce the container plug and bring the first cavity and the second cavity into fluid communication with the container. Once located in the container, fluid from the container may flow through the first cavity and/or second cavity under the influence of gravity or force (eg, pressure difference). In the embodiment of FIG. 12, the second tube 124 may be connected to an air inlet allowing air to enter the container through the second cavity 144B to prevent vacuum from forming in the container. Thus, the medical fluid can flow primarily through the first cavity 144A and ultimately be delivered to the patient. In some embodiments, multiple spikes may be connected in series such that fluid can be delivered simultaneously from multiple containers, as will be discussed below with reference to FIG. 13-15.

[0081] In one embodiment, as shown in FIG. 12, the tenon 140 may include a tenon shell 148 surrounding a tenon body 142. The tenon shell protects the tenon 140 before the container is pushed onto the tenon and pierced. As the container moves along the tenon, the shell of the tenon may be broken so that the first and second cavities 144A, 144B can be brought into fluid communication with the container. In one embodiment, in which a plurality of spikes are connected in series, the spike shells can prevent fluid from leaking from the first and second cavities if the containers are pierced sequentially by the spikes.

[0082] FIG. 13 is a schematic top view of one embodiment of a pump assembly 100 including a first cavity 106A and a second cavity 106B, each configured to receive a medical fluid container. Each cavity includes a tenon 140A, 140B, which are connected in series with each other. That is, the second spike 140B is connected to the air inlet 126 at one end and the first spike 140A at the other end via a second tube 124. The air inlet may include a hydrophobic filter that allows air to enter a fluid distribution system formed in part by the spikes and a second tube, but does not allow fluid to pass through. Thus, the first tenon and the second tenon are fluidly coupled and are capable of combining fluid from both containers located in the first cavity and the second cavity. The first tenon 140A is fluidly coupled to the fluid outlet 120 via a first tube 122. A portion of the first tube engages a peristaltic pump head having three rotary rollers 134. The peristaltic pump head is located in the motor block receptacle 110 such that the output shaft may be coupled to a peristaltic pump head to move fluid from disposed containers to a fluid outlet.

[0083] FIG. 14 is a schematic side view of the pump unit 100 of FIG. 13. As shown in FIG. 14, the pump unit includes two separate cavities 106A, 106B, each of which is sized and shaped to receive a medical fluid container. The tenons 140A, 140B are located in these cavities and protrude perpendicularly from the base of each cavity.

[0084] FIG. 15 is a schematic side view of the pump unit 100 of FIG. 13 when used with one embodiment of the motor unit 200 and containers 300A, 300B. In FIG. 15, the walls 302A, 302B of each container are configured to conform to the shape of the cavities 106A, 106B such that the containers are oriented and aligned with the tenons 140A, 140B when the containers are positioned in the cavities. As shown in FIG. 15, the spikes 140A, 140B pierce the plugs 308A, 308B of each container to bring both containers into fluid communication with the fluid distribution system of the pump unit to allow the total volume of medical fluid to be delivered from the fluid outlet of the pump unit.

[0085] FIG. 16 is a schematic view of one embodiment of a pump unit fluid distribution system. As shown in FIG. 16, the fluid distribution system includes a fluid outlet 120, a first tube 122, a first spike 140A, a second tube 124, a second spike 140B, a third tube 125, and an air inlet 126. The fluid outlet 120 of FIG. 16 is configured as a female Luer-lock valve that restricts the flow of fluid through the outlet until a corresponding male Luer-lock connector is connected to the fluid outlet. As noted previously, air inlet 126 may include a hydrophobic filter adapted to allow air to enter the fluid distribution system without allowing fluid to pass through. According to the embodiment of FIG. 16, the tenons 140A, 140B are designed as dual cavity tenons connected in series, similar to the tenon shown in FIG. 12. Of course, in other embodiments, studs having a single cavity or multiple cavities may be used, since the present invention is not limited in this regard. In addition, it should be noted that the fluid distribution system may use any suitable number of spikes to combine fluid from a desired number of containers.

[0086] In the embodiment of FIG. 16, the first tube 122 includes a peristaltic portion 123 configured to engage a peristaltic pump head. In some embodiments, the peristaltic portion may be coated or formed from a wear-resistant material to improve durability under abrasion conditions during operation of rotary peristaltic pumps. Of course, in other embodiments, the first tube 122 may be constructed in a uniform manner.

[0087] FIG. 17 is a schematic view of one embodiment of an infusion set 400 that can be used with the infusion system of the embodiments described herein. According to the embodiment of FIG. 17, the infusion set includes a fluid inlet 404, an infusion set tubing 402, and a needle 406. The fluid inlet of FIG. 17 is configured as a male Luer-lock connector configured to engage the fluid outlet shown in FIG. 16. In the embodiment of FIG. 17, needle 406 is designed as a single butterfly needle suitable for single site infusion. Of course, any suitable infusion set can be used, including infusion sets having one, two, three, four or five needles for dispensing the infused medical fluid, as the present invention is not limited in this regard.

[0088] FIG. 18 is a schematic side view of another embodiment of an infusion system including a clip 105 configured to allow the pump unit 100, motor unit 200, and/or container 300 to be worn on clothing. For example, in the embodiment shown in FIG. 18, the clip is configured as a belt clip formed on the pump unit body 101 and releasably attached to the user's belt. Of course, any suitable design can be used to allow a patient to wear the pump unit, motor unit and/or container 300, as the present invention is not limited in this regard.

[0089] Although the teachings of the present invention have been described in connection with various embodiments and examples, the teachings of the present invention are not intended to be limited to such embodiments or examples. To the contrary, the teachings of the present invention embrace various alternatives, modifications and equivalents, as will be understood by those skilled in the art. Therefore, the foregoing description and drawings are given by way of example only.

Claims (42)

1. A pump cartridge for an infusion system, containing: frame; a cavity formed in the body and containing a cavity base and a cavity wall; a container located in the cavity and containing an internal cavity and a plug, the container being retained in the cavity and at least partially surrounded by a wall of the cavity; at least one locking projection preventing movement of the container towards the base of the cavity; a spike located in the cavity and extending perpendicular to the base of the cavity, which is configured to pierce the container when the container is moved towards the base of the cavity; a peristaltic pump head located in the housing; fluid outlet and a tube fluidly connecting the spike to a fluid outlet, the head of the peristaltic pump being in contact with at least a portion of the tube. 2. The pump unit cartridge according to claim 1, wherein at least one locking projection is formed on the cavity. 3. The pump unit cartridge according to any one of claims 1 or 2, wherein at least one locking projection is formed on the container. 4. The pump unit cartridge according to any one of claims 1 to 3, wherein at least one locking protrusion is located between the container and the spike. 5. The pump unit cartridge of claim 4, wherein at least one locking projection is removable from the pump unit cartridge to allow the container to move toward the base of the cavity. 6. The cartridge of the pump unit according to claim 5, in which at least one locking protrusion is made in the form of a plate located with the possibility of sliding in a groove formed in the wall of the cavity. 7. The pump unit cartridge according to claim 6, wherein the plate can be removed from the groove in a direction parallel to the plane formed by the base of the cavity. 8. Cartridge pump unit according to any one of claims 1 to 7, in which at least one locking protrusion is located between the container and the wall of the cavity. 9. The pump unit cartridge of claim 8, wherein the at least one locking projection is ruptureable, wherein the at least one locking projection is configured to resist movement of the container toward the base of the cavity until a threshold force is applied to the container in the direction the base of the cavity and this at least one locking projection will not be destroyed. 10. The pump unit cartridge according to claim 9, wherein the at least one locking projection comprises at least three locking projections. 11. The pump unit cartridge of claim 8, wherein the at least one locking protrusion is in a compressed state between the container and the wall of the cavity to create a frictional force between the container and the wall of the cavity, wherein the generated frictional force prevents movement of the container towards the base of the cavity until a threshold force is applied to the container towards the base of the cavity. 12. The pump unit cartridge according to claim 11, in which at least one locking protrusion is made in the form of a sealing O-ring that engages with the perimeter of the container. 13. The pump unit cartridge according to claim 11, in which at least one locking protrusion is made of rubber. 14. Pump unit for infusion system, containing: frame; a cavity formed in the housing and configured to receive and support the container, the cavity including a cavity base and a cavity wall; a spike located in the cavity and extending perpendicular to the base of the cavity, which is configured to pierce the container when the container is placed in the cavity; a peristaltic pump head located in the housing; fluid outlet and a tube fluidly connecting the spike to a fluid outlet, the head of the peristaltic pump being in contact with at least a portion of the tube, the housing encloses the cavity, the spike, the head of the peristaltic pump and the tube. 15. Infusion system containing: pump unit containing: pump block housing, a cavity formed in the body of the pump unit and configured to receive and support the container, the cavity including a cavity base and a cavity wall, a spike located in the cavity and extending perpendicular to the base of the cavity, which is configured to pierce the container when the container is placed in the cavity, a receptacle for the motor unit formed in the housing of the pump unit; a peristaltic pump head located in the pump unit housing; fluid outlet, and a tube fluidly connecting the spike to a fluid outlet, the head of the peristaltic pump being in contact with at least a portion of the tube; And a motor unit located in the receiver for the motor unit, comprising: battery and a motor electrically coupled to the battery and having an output shaft directly coupled to the head of the peristaltic pump, wherein the motor unit can be removed from the motor unit receiver.