Pumping equipment

Abstract

To provide a cassette for use with a pumping apparatus having a pumping system for engaging a pump set.SOLUTION: A cassette 5 includes a cassette body configured for releasable attachment to a pumping apparatus 1 to mount the cassette on the pumping apparatus. The cassette body has at least one mounting formation. At least one identification member is mounted on the cassette body by the mounting formation of the cassette body. The identification member and mounting formation are formed to mount the identification member in any one of a plurality of predetermined orientations. Each predetermined orientation indicates a different functional configuration of the pump set.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention generally relates to a flow control system including a flow control device and a supply set, In particular, it relates to a cassette for use with a flow control device. [Background technology]

[0002] Administration of medicines or nutrients to patients who are unable to take medicines or nutrients orally should be performed using a peristaltic flow control system. Generally, in such systems, the fluid The fluid is delivered to the patient at a controlled rate by a flow control device such as a peristaltic pump. It is delivered to the patient by a pump set containing a flexible elastomeric tube. The pump typically includes a housing containing a rotor that operably engages a motor through a gearbox. The rotor has a axial displacement caused by impact, e.g., squeezing, on the rotor by one or more rollers. The flexible tubing of the pump set is compressed by the peristaltic action caused by the reversible compression of the The rotation of the rotor drives the fluid through an elastomer that drives the fluid at a controlled speed. The pump set is then gradually compressed to allow fluid flow communication through the pump set. The flow control system may also have a valve mechanism to enable or prevent and a controller operatively regulating one or more motors to effectively control the flow of fluid. It can have:

[0003] Peristaltic pumps work by delivering fluid in small amounts called "aliquots." The rotor engages the elastomer tubing of the pump set, For example, clamp a portion of the clamping portion closer to the patient than the source of fluid going to the patient. Generally, the amount of fluid administered to the patient is substantially the same. Count the number of aliquots and adjust the number to correspond to the total desired volume of fluid to be delivered. The pump is controlled internally by stopping when the pressure reaches a certain level. Peristaltic pumps are hygienic and and is generally accurate, making it extremely useful for administering medications and therapeutic fluids to patients. Summary of the Invention [Means for solving the problem]

[0004] In one aspect, a pumping device having a pumping system that engages a pump set. The cassettes used in the pumping system generally require a pumping pin to attach the cassette to the pumping system. The cassette body is configured to be releasably attached to a fitting. is attached to the cassette body and includes an attachment structure. Attached to the fitting by a mounting structure to indicate the functional configuration of the amplifier set The mounting structure and identification members indicate different functional configurations of the cassette and pump set. To achieve this, the identification member is configured to be attached to the fitting in different orientations.

[0005] In another aspect, a fitting assembly for use with a cassette of a pump set generally comprises: The cassette has a body with an inlet port and an outlet port. The body is adapted to be attached to the cassette. At least one identification member is provided to indicate the functional configuration of the pump set. Can be attached to the body.

[0006] In yet another aspect, a pumping system is provided that engages a pump set. The cassette used with the device generally has a closure for attaching the cassette to the pumping device. The cassette includes a cassette body configured for releasable attachment to a pumping device. The body has at least one mounting formation. At least one identification member is attached to the cassette body. The formation is configured to attach the identification member in any one of a number of predetermined orientations. Each predetermined orientation represents a different functional configuration of the pump set.

[0007] In yet another aspect, a method for assembling a cassette generally includes engaging a pump set. providing a cassette for use with a pumping device having a pumping system. At least one identification element is attached to the cassette to indicate the functional configuration of the pump set. wear.

[0008] In yet another aspect, a flow control system generally includes a pumping device and a sensor. The pump set is equipped with a cassette and a tube attached to the cassette. The cassette includes a flow control device for attaching the cassette and tubing to the flow control device. The cassette is configured to releasably attach to the control device. a mounting formation and at least one identification attached to the cassette by the mounting formation; The identification member and the mounting formation are configured to mount the identification member in any one of a plurality of predetermined orientations. Each given orientation allows for a different functional configuration of the pump set. The sensor provides at least one identifying signal to identify the functional configuration of the pump set. The device is configured to detect the presence and orientation of the member. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of a feeding system having a pumping device, a fragmentary portion of a feeding set, and a cassette.

[0010] [Figure 2] FIG. 2 is a perspective view of the system of FIG. 1, with a portion of the cassette removed.

[0011] [Figure 3] FIG. 2 is a perspective view of FIG. 1, with the supply set and cassette removed.

[0012] [Figure 4] FIG.

[0013] [Figure 5] FIG.

[0014] [Figure 6] FIG.

[0015] [Figure 7] FIG. 10 is a rear perspective view of the cassette with the fitting assembly removed from the cassette.

[0016] [Figure 8] FIG. 1 is a front perspective view of a fitting assembly.

[0017] [Figure 9] FIG. 10 is a rear perspective view of the fitting assembly.

[0018] [Figure 10] FIG. 10 is a front perspective view of the fitting assembly with the stem of the stopcock removed.

[0019] [Figure 11] FIG.

[0020] [Figure 12] FIG.

[0021] [Figure 13] Cross-sectional view of the stem;

[0022] [Figure 14A] FIG. 1 is a perspective view of an axially magnetized magnet.

[0023] [Figure 14B] FIG. 1 is a perspective view of a diametrically magnetized magnet.

[0024] Corresponding reference numbers indicate corresponding parts throughout the drawings. DETAILED DESCRIPTION OF THE INVENTION

[0025] One or more aspects of the present invention relate to peristaltic pumps, such as rotary peristaltic pumps, and in particular to a plurality of Rotary peristaltic pump utilizing a cassette with valves for selecting between fluid flow configurations The cassette also has a design that prevents the outlet tube attached to the cassette from kinking. Any one or more advantageous features or any one or more of such features The present invention relates to a structure for providing or facilitating the use of a peristaltic pump in a variety of commercial and industrial applications. Therefore, the detailed description is directed to an enteral feeding pump with a cassette. Although any one or more features of the present invention may be used in other It may be embodied or implemented in a peristaltic pump. Although the pump is a rotary peristaltic enteral feeding pump, the present invention is applicable to other types of pumps, including medical infusion pumps. This also applies to peristaltic pumps (not shown). The general structure and operation of enteral feeding pumps is as follows: "FLOW CONTROL APPARATUS" EXCEPT AS SPECIFIED BELOW Co-assigned U.S. Patent Nos. 7,616,799, issued October 27, 2009, entitled No. 08,059, “FLOW MONITORING SYSTEM FOR A FL On August 15, 2006, titled "OW CONTROL APPARATUS" Issued U.S. Patent No. 7,092,797 and "ALIQUOT CORRECTI ON FOR FEEDING SET DEGRADATION" As disclosed in U.S. Patent No. 7,534,099, issued May 19, 2009 It is understood that one or more of the various features and aspects of the present invention may be omitted from the scope of the present invention. In peristaltic pumps, such as linear peristaltic pumps, that use mechanisms other than rollers without slippage Also, while an exemplary feeding set 7 is shown, it is within the scope of the present invention. Other types of pump sets (not shown) can be used without departing from the scope of the invention.

[0026] Referring now to the drawings, and particularly to FIGS. 1-3, there is shown a system constructed in accordance with any one or more of the principles of the present invention. An exemplary enteral feeding pump (broadly referred to as a "pumping device") is generally designated 1. The nutrient pump is configured to receive a cassette generally designated 5. , a housing generally designated 3 and removably received within a cassette 5 A supply set (broadly called a "pump set"), the fragmentary parts of which are generally designated 7 The cassette 5 is releasably attachable to the housing 3. In the illustrated embodiment, the cassette 5 is removably fitted into a cassette recess 6 in the housing 3. (FIG. 3). It should be understood that the term "housing" as used herein refers to a , including multi-component structures and structures that do not enclose or house the working components of pump 1. Many forms of support structure (not shown) may be included, including but not limited to: Various aspects and features of the invention can be practiced without recess 6. Pump 1 can also be On the housing 3, there is a display screen 9 on which information regarding the status and operation of the pump can be displayed. One or more buttons 11 accessible to the display screen 9 may be used to control the pump 1. and one or more generators may be provided for use in controlling and obtaining information from the pump 1. The photodiode 13 can provide status information for the pump. The bottom of the housing 3 is fitted with a handheld terminal so that the display screen 9 is tilted slightly upward for easy viewing. Legs (not shown) may be positioned to support the housing.

[0027] Display screen 9 is part of the front panel (generally designated 19) of housing 3 The enteral feeding pump may include a housing and a removably attachable member. A pump motor (not shown) connected to a rotor shaft (not shown) The pump motor may further include a pumping unit shown at 23. A battery (not shown) can be received within the housing 3 to provide power. Use a power source other than or in addition to the battery to pump the fluid through the rotor shaft. A pump including one or more prime movers that drive the pumping unit can be energized.

[0028] The pumping unit 23 comprises a rotor (as a whole) which can be coupled to a rotor shaft. The rotor 37 may have an inner disk 39 and an outer disk disk 41 and an inner disk 42 for rotation relative to the disk about their longitudinal axis. Four rollers 43 (only three of which are shown) mounted between the rack and the outer disk. 2 and 3. The roller 43 is configured to 5 and when the cassette is installed in the housing 3, Engages tubing 45 (FIG. 2) to deliver fluid to the subject through the feeding set. For example, five or six rollers are contemplated without departing from the scope of this disclosure. You can also use a la.

[0029] 4-7, the cassette 5 has a front portion 53, a rear portion 55, an upper portion 57, and a lower portion 59. The cassette body 51 may have a side wall 61 and a top wall 63. A rear cap extends from the rear 55 of the body 51 and is configured to receive a fitting 65. The tube 45 (FIG. 2) is attached to the fitting 65. The fitting 65 can be attached to the cassette or It may have a tab 84 that allows it to be snapped together. The fitting can be removably secured to the cassette.

[0030] The fitting 65 includes a base 67, an inlet port 69, an outlet port 71, and a stem hole. An inlet port 69 may be provided for insertion into the inlet end of the tube 45. a first fitting 73 for receiving the inlet tube 77 (FIG. 2) and a pair of second fittings for receiving the inlet tube 77 (FIG. 2). The outlet port 71 may include a port 75A, 75B for insertion into the outlet end of the tube 45. a first fitting portion 79 for engagement or attachment, such as by insertion, and receiving an outlet tube 83; and a second attachment portion 81 for attachment to the outlet tube 83 by, for example, An opening in the second fitting 81 that receives the outlet tube 83 secures the tube within the opening. The outlet tube 83 may be funnel-shaped or tapered away from the opening to allow for The tube is treated with a solvent to soften it for insertion into and bonding with the fitting 81. The second attachment portion 75A is in fluid communication with a supply source (e.g., a nutritional solution bag). The second fitting 75B can be connected to a cleaning source (e.g., a cleaning Alternatively, the second fitting 75B can be in fluid communication with the supply. The second mounting portion 75A can also be attached to a cleaning source.

[0031] The tube 45, fitting 65, inlet tube 77, and outlet tube 83 are connected to the port. The cassette 5 may be considered as part of the pump set 7. In a preferred embodiment, the cassette 5 is made of a polycarbonate or other suitable material. Made from polymer material.

[0032] Referring to Figures 8-13, the stopcock includes a cylindrical stem 68. The stem 68 is received in a circular opening 70 in the stem holder 66 of the pump cell 65. a second attachment for placing the nozzle in either a fluid delivery configuration, a cleaning configuration, or a fluid flow blocking configuration; The attachment portions 75A and 75B are movable within the opening 70 so as to selectively communicate with the first attachment portion 73. The second mounting portions 75A and 75B are respectively fitted with fittings 6. The first fitting 73 has an outlet that communicates with the opening 70 of the fitting. The stem 68 has an inlet through which the first opening 74 and the second opening 77 are formed in the body. The first and second openings 74, 76 are formed by a cylindrical body 72 having a first opening 74a, a second opening 74b, and a third opening 76c. The second opening 76 is elongated such that the first dimension is greater than the second orthogonal dimension. The first and second openings 74, 76 are formed in the body 72. and the fluid flow through the stem 68 is directed from the second fittings 75A, 75B to the and the first mounting portion 73 are arranged in the same plane so that they extend downward from the first mounting portion 73 to the first mounting portion 74 in a substantially single plane. A passageway 88 extends through the body 72 of the stem 68 and is positioned such that the The first opening 74 communicates with the second opening 76. A passage 88 connects the first opening 74 to the second opening 76. 76. Passageway 88 has a curved inner wall 9 which gives the passageway a generally inverted V-shape. It has 2.

[0033] A flange 78 extends radially from the body 72 of the stem 68 and partially around the outer periphery of the body. A cavity 80 is formed in the body 72, and the shaft 93 of the pump 1 is inserted into the stem 68. The flange 78 engages the body of the The flange 78 and the hook 108 are configured to engage with the recess 6 of the pump 1. The engagement with the lock 108 prevents the supply set 7 from being disengaged while the pump 1 is in operation. The overall function is to deliver uncontrolled amounts of fluid to the patient, which can be potentially harmful to the patient. , preventing free flow conditions in the feed set 7. In addition, the flange 78 As will be apparent, this acts as a stop engagement mechanism to limit rotation of the stem 68. The fitting 65 and stem 68 together may be considered a fitting assembly 82. The configuration of the fitting assembly 82 allows the fluid flow selection valve to be connected to the inlet tube 7 7 and place it into the body of the cassette 5.

[0034] In the configuration shown in FIG. 8, the fitting assembly 82 is A fluid flow barrier in which the body 72 prevents the outlet from communicating with the opening 70 and the inlet of the first fitting 73. For example, the shaft 93 of the pump 1 engages the cavity 80 and the body 72 Rotation of the stem 68, such as by rotating it clockwise within the opening 70, rotates the first opening The second opening 74 is connected to the outlet of the second mounting portion 75B, and the second opening 76 is connected to the inlet of the first mounting portion 73. This allows the fluid source connected to the second fitting 75B to flow out through the tube 45. The second fitting 75A is in fluid communication with the first fitting 73 and the outlet tube 83. Further rotation of the stem 68 closes the first opening 74 to the second mounting portion 66. The second opening 76 remains in communication with the inlet of the first mounting portion 73. , thereby connecting a fluid source connected to the second fitting 75A to the outlet 71 and the The second opening 76 is connected to the outlet tube 83. This is because the position and length of the second opening 76 are At least a portion of the first mounting portion 73 communicates with the inlet of the first mounting portion 73 throughout the entire movement of the stem 68. This is because the first opening 74 is connected to the outlets of the second attachment portions 75A and 75B. At this time, the second attachment portion 75B is disconnected from the first attachment portion 73. A stop 94 on the body 66 engages the flange 78 to restrict rotation of the body within the opening 70. Limited.

[0035] A magnet (broadly speaking, an identification member) 126 is formed in the outlet port 71 of the fitting. The magnet 126 may be selectively positioned within a pocket 128. In the illustrated embodiment, only a single magnet 126 is shown. However, up to four magnets 126 may be included, each magnet being a The fitting 65 is received in one of the pockets 128 of the pump 1. One or more sensors 130 are positioned near the pocket 128 when the cassette 5 is attached to the pump. to detect the presence of the magnet 126 in the pocket 128. Two sensors 130 (only one shown in the drawing) are provided to allow the cassette to be attached to the pump 1. When the cassette is opened, the sensor is dedicated to each pocket and is approximately centered on each pocket. The magnets 126 are arranged in the pump facing the four pockets 128 in the pump 5. The arrangement and placement can be predetermined to indicate the functional configuration of the supply set 7. The number and arrangement of 126 stones are: supply, supply / cleaning, supply Wi-Fi, supply / cleaning Wi-Fi, Newborn supply, newborn supply / washing, newborn supply Wi-Fi, newborn supply / washing Wi-Fi, etc. The functional configuration of the supply set 7 can be represented as one of the following: , together with a processor (not shown) in communication with the sensors, to the specific functional configuration of the supply set 7. In one embodiment, the sensor 130 is programmed to identify the corresponding magnet configuration. In the illustrated embodiment, the magnet 126 and pocket 128 are a disk. However, the magnet 126 and pocket 128 may be configured in any manner that deviates from the scope of this disclosure. In addition, magnet 126 may have other shapes without being limited to the scope of this disclosure. It can be attached to the cassette 5 at other positions and by other means without deviation. do.

[0036] In one embodiment, the magnet 126 is an axially magnetized magnet (FIG. 14A). In the case of a disk-shaped magnet, the circular part on the opposite side of the disk is placed so that the magnetization direction is along the rotation axis of the disk. In this embodiment, the magnet 126 has either a north pole or a south pole. It can be placed in the pocket 128 with one side facing away from the pocket. In addition to the presence of magnet 126 in pocket 128, the orientation of the magnet in the pocket (e.g., north and south poles) The polar orientation) provides different indications of the specific functional configuration of the supply set 7. Therefore, the number of the cartridges in the same position (for example, in the same pocket 128) in the cassette 5 is The magnet 126 provides two different indications to the sensor depending on the orientation of the magnet at that location. Therefore, one magnet 126 can be used to place a magnet in any pocket 128. The system accepts stones and pocket magnets and changes the orientation of the system. allows for up to eight different magnet position configurations. Using two magnets 126 The system determines which pocket 128 receives each magnet and which pocket receives the magnet. By changing the orientation of the magnets, the system can exhibit up to 32 different magnet position configurations. Thus, the function of 32 supply sets can be achieved using only two magnets 126. The three magnet 126 system can be used to identify and show the various configurations. Four different magnet position configurations can be shown, which allows you to see whether the magnet is present or not. provides a greater discrimination of functional configurations than systems that only detect either It is served.

[0037] Additionally or alternatively, one or more of the magnets 126 may be diametrically magnetized (FIG. 14B). In embodiments where the diametrically magnetized magnet is cylindrical or disc-shaped, the magnet may be is magnetized across the diameter of the disk / cylinder. The north and south poles are formed on both sides of the magnet. This is because in the case of a disk-shaped magnet, the magnetization direction is Axial magnetic fields are formed on opposite circular faces of the disk, with north and south poles along the axis of the disk. In contrast to diametrically magnetized magnets, when diametrically magnetized magnets are used, the The sensor 130 detects the orientation (i.e., angular position) of the magnet 126 within the pocket 128. The angle sensor can be an angle magnet sensor that detects the magnetic field of the magnet and The sensor is configured to determine the position of the magnet based on the magnetic field detected. For example, the sensor can detect the XY The coordinates are measured and the angular position of the magnet is determined based on the measured coordinates. The pockets 128 in the same position on the set 5 are oriented at different angular positions, and the More than two different functional configurations may be shown, for example, specifying the angular rotation of the magnet 126. The angle or angle range may correspond to a particular functional configuration of the supply set 7. In this embodiment, every 10 degrees of rotation corresponds to a different functional configuration, resulting in 36 different configurations of the supply set 7. It is possible to provide identification of different numbers of functional configurations. Therefore, other increments of angular rotation are also envisaged. Only a single magnet may be required to provide a sufficient number of positional changes to represent the configuration In this embodiment, the four pockets 128 shown in the illustrated embodiment are spaced apart in a single diameter. The magnets may be replaced with a single pocket for housing the magnets. The sensor assembly was manufactured by Melexis, based in Ypres, Belgium. A TriAxis® position sensor assembly.

[0038] In one embodiment, the diametrically magnetized magnet 126 is configured to identify the orientation of the magnet's magnetic field. This allows the system to determine which angular position / magnetic field is in which of the supply sets 7. It is possible to indicate whether the functional configuration corresponds to the

[0039] In one embodiment, the magnet 126 is formed in an unmagnetized state and then magnetized. In this state, the magnet 126 is re-magnetized as needed.

[0040] 5 to 7, the second attachment portion 81 of the outlet 71 of the fitting 65 is Before the tube 83 is inserted into the second mounting portion 81, it is arranged so as to extend downward within the cassette body 51. 5, recessed from the top 57 of the cassette 5. This is due to the bay extending downward from the top wall 63. Provide a portion of the outlet tube 83 that extends adjacent to the curved guide wall 96. Guide wall 96 provides a gradually arcing surface for outlet tube 83 to rest on, This prevents the tube from bending sharply at the lateral edges of the cassette 5. As a result, the outlet tube 83 prevents kinks that may impede fluid flow through the tubing. A portion of the outlet tube 83 is connected to the top 57 of the cassette 5 and the tube fitting 65. The second mounting may have been softened by the solvent treatment since it extends between the mounting The portion of the tube inserted into section 81 is not located where the tube is subjected to bending forces. Rather, this portion is spaced from the top 57 of the cassette 5 and is guided by a curved guide wall 96. This prevents the outlet tube 83 from being twisted or pinched. The possibility is further reduced.

[0041] As illustratively shown, tabs 84 (FIGS. 8 and 9) extend from the sides of base 67. 1 and 4) in the front 53 of the cassette 5. and configured to releasably attach the fitting 65 to the cassette 5. A pair of guide ramps 91 (FIGS. 6 and 7) in the side wall 61 are oriented toward the opening 86. Tab 84 on fitting 65 meets ramp 91. and is received in opening 86 to hold the fitting to cassette body 51. The stem holder 66 of the fitting 65 is formed in the body 51 of the cassette 5. Alternatively, the fitting 65 may be received in a valve holder 98 (FIG. 7). It may be formed integrally with the cassette body 51 or may be omitted.

[0042] 5 and 7, notches 85A, 85B are provided to allow the inlet port of fitting 65 to for receiving second fitting portions 75A, 75B of port 69 and outlet tube 83, respectively. The cassette body 51 may be formed on the upper wall 63 thereof. A T-shaped wall 89 extends between the side walls 61 and generally perpendicular to the cassette. The base 67 of the fitting 65 engages with the positioning wall 87. The central extension of the T-shaped wall 89 is received within a recess 90 (FIG. 9) in the base 67 . The engagement of the central extension with the recess 90 allows the lateral movement of the fitting 65 within the cassette 5 to The horizontal portion of the T-shaped wall 89 is positioned within the cassette 5 to prevent or at least impede movement. This limits the downward movement of the fitting 65 in the

[0043] The arc wall 95 is located approximately in the center of the cassette body 51 and secures the cassette 5 to the housing 3. a rotor recess for receiving at least a portion of the rotor 37 of the pump 1 when installed; 97. The rotor recess 97 may include a bump-out 99 in the front portion 53 of the cassette body 51. Inlet and outlet outer curved guide walls 101 extend generally parallel to and on either side of the arc wall 95 (FIG. 4). The inlet and outlet inner curved guide walls 103 can be formed by the inlet and outlet outer curved guide walls 103. Extending upward from the arc wall 95 generally parallel to the wall 101, the inlets and Inlet and outlet openings may be formed to receive and support the gas inlet and outlet portions. The guide walls 101, 103 and the arc wall 95 are arranged to The bottom of the tube 45 is looped to properly position the tube relative to the rotor 37. The arc wall 95 and the curved guide may be formed with a tube channel for receiving the The rotor recess 97 has walls 101, 103 that receive the tubes in a tight-fitting relationship around the sides of the rotor recess 97. Tabs 100 extend over the tube channel to secure the tube 45 to the tube. The cassette 40 holds the tube 45 in the cassette channel and rotates the tube 45 along the third axis. The outer curved guide wall 101 allows the tube 45 to restrain the rotor recess 9. 7 so as not to directly face the guide walls 101, 103 or the arc wall 95. It may terminate below the recess 97 .

[0044] The insert 105 secures the cassette 5 and the tube 45 within the cassette recess 6. The cassette can be usefully received in a cassette recess 6 in the housing 3 (FIG. 3). The insert 105 is bayonet-mounted when the cassette 5 is attached to the housing 3. The cassette 5 is positioned above the guide walls 101 and 103 so that it can be received in the rear cavity of the cassette 5. The insert 105 can be positioned in the recess 6 so as to receive the inlet portion of the tube 45. A pair of opposing first protrusions 107 are arranged on the inlet side of the insert for receiving the tube. a pair of opposing second grooves disposed on the outlet side of the insert for receiving the outlet portion of the tube; The cassette body 51 may be provided with a rib 111 (see FIGS. 6 and 7) at the rear portion 55 thereof. 7) engages the outlet portion of the tube 45 between the second protrusions 109 to separate the inlet and outlet portions. The tube 45 may be positioned to facilitate insertion of the nozzle between the projections. Orientation indicia 112 may be located on at least one of the second protrusions 109. In an embodiment, the indicia 112 is in the form of an arrow.

[0045] 5-7, the stator member 113 is generally located at or near the bottom of the rotor recess 97. The cassette body 51 is placed in a cavity such as the stator opening 115 located nearby. Therefore, when the cassette 5 is attached to the housing 3, the stay The rotor member 113 is generally positioned generally opposite the bottom of the rotor 37. In this configuration, the stator member 113 is configured to engage the rollers 43 with the tubes, as described below. When the tube 45 of the supply set 7 is inserted, the tube 45 can be supported. The stator member 113 may have an arcuate shape that extends along the length of the stator member. As in the illustrative embodiment, the stator member 113 is attached to the cassette body 51 at a first end. and is at least partially secured within the stator opening 115 relative to the cassette body 51. As shown in the figure, the flexible cantilevered member can be freely floating. The stator member 113 pivots about its connection or anchor to the rest of the cassette 5. For example, the stator member can be attached to the cassette body. A reaction segment having a fixed first end and a surface of the stator member has a deflection displacement. and a second end that is free to float or displace so that the For example, at least one roller may rotate around the rotation axis of the rotor. As it moves along the tube, the flexible stator member 113 rotates about the axis of rotation. The deflection displacement is responsive to the force applied by one or more rollers 43 during rotation of the roller. It can bend or flex.

[0046] Transverse ribs 116 on the underside of the first portion provide structural rigidity to the flexible stator member 113. This allows for easy removal by ejecting the cantilever member from the mold cavity. In the illustrated embodiment, the flexible stator member 11 3 can be integrally formed as a single piece with the cassette body 51. The flexible stator member 113 is formed separately from the cassette body 51 and is attached by suitable means. For example, a flexible stator (not shown) may be attached to the cassette body. The body may have an elongated extension portion that engages an engagement cavity, the engagement cavity comprising: The stator portion is sized and shaped to receive the extension portion accordingly. The material is selected from multiple candidates with different mechanical properties such as elastic modulus and radius of curvature, and the tube is Adjusting cassette operating parameters and pumping with or without consideration of any of the characteristics The system can provide specific flow performance attributes during operation.

[0047] A stop 117 is located on the bottom of the stator opening 115 to prevent the flexible stator member 113 from being pulled out of the opening. The stop 117 limits the floating movement to a maximum displacement. against the underside of the flexible stator member 113 to prevent bending of the stator member causing For example, the stop members may be spaced apart to provide a deflection displacement distance of the free end. In the illustrated embodiment, stop 1 17 is formed as part of the cassette body 51. However, the stop 117 , may be formed separately from the cassette body 51 and attached to the cassette body in any suitable manner. In other cases, stops 117 are formed on the housing 3 to prevent deformation of the flexible stator member 113. The stop 117 may be configured to limit the position of the stator member to a maximum displacement. The width of the flexible stator member 113 is chosen to provide sufficient surface area to limit movement. The stop 117 protects the flexible stator member 113. This can help prevent the member 113 from becoming caught or trapped. The dimensions are such that the resistance is prevented or reduced.

[0048] Before installing the cassette 5 in the pump housing 3, the inlet tube 77 and the outlet tube The nozzles 83 can be attached to the inlet port 69 and outlet port 71 of the cassette, respectively. In order to attach the cassette 5 to the pump housing 3, the lower part 59 of the cassette body 51 is one or more pins or raised protrusions 119 of the housing 3 into the slots 12 at the bottom of the recess 6 of the housing 3. 4. The engagement of the raised projection 119 with the slot 124 is generally The set 5 is placed in the housing 3. Then, the cassette body 51 is The ledge 123 of the tab 125 at 57 is caught by the catch 127 at the top of the recess 6. In the illustrated embodiment, the raised protrusion 119 The ledge 123 is integrally formed with the cassette body 51. The protrusion 119 and the shelf portion 123 are formed separately from the cassette body 51 and are not attached to the cassette body. After the cassette 5 is mounted in the pump housing 3, A pocket 128 in fitting 65 is generally oriented toward one or more sensors 130 in pump 1. In this position, one or more sensors 130 are positioned in the pocket 128. Detects the orientation of any magnet 126 received by the supply set and the magnet in the pocket. By knowing the functional configuration of the supply set 7, Pump 1 is instructed which pumping routine to execute. To remove from housing 3, tab 125 is depressed to catch ledge 123. can be removed from.

[0049] When the cassette 5 is attached to the pump housing 3, the tubing 45 of the supply set 7 The rollers 43 of the pump 1 are positioned to engage the flexible stator. The roller 43 engages the tube 45 at the portion of the tube supported by the member 113. Engagement of the tube 45 by the flexible stator member 113 causes the flexible stator member 113 to flex away from the rollers. Specifically, this movement causes the tube 45 to move slightly toward a more straight configuration. The roller 43 closes the tube in a semi-straight manner. Therefore, the tube 45 can be moved in the same way as the rollers of conventional pumps. Instead of pulling and stretching, the roller 43 slides along the tube, reducing tension. As a result, the roller 43 closes the actual linear dimension of the tube 45. Therefore, the calculated aliquot volume for Pump 1 is will more closely match the actual aliquot volume produced by the pump, resulting in a more accurate delivery Bring a salary.

[0050] When introducing elements of the present invention or preferred embodiments thereof, the articles "a," "an," "t" and "t" are used. The words "he" and "said" are intended to mean that one or more of an element is present. The terms "comprise," "include," and "have" are intended to be inclusive. means that there may be additional elements other than the listed elements.

[0051] It will be seen, therefore, that the several objects of the invention are achieved and other advantageous results attained. You will understand.

[0052] Various modifications may be made to the above structure without departing from the scope of the present invention. All matter contained in the above description or shown in the accompanying drawings is intended to be illustrative and not restrictive. No limiting sense is intended.

Claims

1. 1. A pumping device comprising: Housing and a cassette recess in the housing, the cassette recess configured to receive a cassette having at least one mounting formation including a plurality of pockets, each pocket configured to receive one identification member in any one of a plurality of predetermined orientations; a plurality of sensors present within the housing, each sensor configured to determine the presence or absence of an identification element in a corresponding pocket when the cassette is engaged with the cassette recess, and the orientation of the identification element in the corresponding pocket; Equipped with identifying a functional configuration of the pumping device from a plurality of functional configurations based on the presence and orientation of an identification member in a corresponding pocket of the plurality of pockets; The pumping device is configured to pump fluid from a source external to the cassette and the pumping device.

2. 2. The pumping apparatus of claim 1, wherein each sensor is a Hall effect sensor.

3. 2. The pumping device of claim 1, wherein each sensor is positioned near a corresponding pocket of the plurality of pockets to identify the presence and orientation of the identification member in the corresponding pocket of the cassette when the cassette is engaged with the pumping device.

4. 2. The pumping device of claim 1, further comprising a processor in communication with each sensor, the processor configured to identify a functional configuration of the pumping device based on the presence and orientation of an identification member in each of the plurality of pockets of the cassette.

5. 5. The pumping device of claim 4, wherein the functional configuration of the pumping device is one of: feed, feed / flush, feed WiFi, feed / flush WiFi, neonatal feed, neonatal feed / flush, neonatal feed WiFi, neonatal feed / flush WiFi.

6. The pumping apparatus of claim 4 , wherein the plurality of sensors includes four sensors.

7. 7. The pumping device of claim 6, wherein the processor is configured to identify a functional configuration of the pumping device from eight functional configurations when the plurality of sensors identify the presence and orientation of a single identification member in the cassette.

8. 7. The pumping device of claim 6, wherein the processor is configured to identify a functional configuration of the pumping device from 32 functional configurations when the plurality of sensors identify the presence and orientation of two identification members in the cassette.

9. 2. The pumping device of claim 1, wherein each sensor is configured to determine the orientation of an identification member in a corresponding one of the plurality of pockets, and when the identification member is an axially magnetized magnet, the orientation is one of a north pole and a south pole when the identification member is facing a first direction, or the orientation is the other of a north pole and a south pole when the identification member is facing a second direction opposite the first direction.

10. 2. The pumping apparatus of claim 1, wherein each sensor is configured to determine an orientation of an identification member in a corresponding one of the plurality of pockets, and when the identification member is a diametrically magnetized magnet, the orientation is an angular position of the identification member.

11. 10. The pumping apparatus of claim 1, wherein the housing further comprises one or more slots, each slot configured to receive a pin or raised protrusion on the cassette.

12. A pumping device as described in Claim 11, wherein the cassette includes an upper portion that includes an inlet and outlet for the fluid when attached to the housing, and a lower portion opposite the upper portion, and the one or more slots are arranged around the lower portion of the cassette in the housing.

13. The pumping apparatus of claim 1 , wherein the housing further comprises a catch configured to receive a tab on the cassette.

14. A pumping device as described in Claim 13, wherein the cassette includes an upper portion that includes an inlet and outlet for the fluid when attached to the housing, and a lower portion opposite the upper portion, and the catch is positioned around the upper portion of the cassette in the housing.

15. The pumping apparatus of claim 1 , wherein the housing further comprises a hook configured to receive a flange on the cassette.

16. The pumping apparatus of claim 15 , wherein the hook is disposed within the cassette recess of the pumping apparatus.

17. 2. The pumping device of claim 1, wherein the housing has a front portion oriented for easy viewing by a user or operator of the pumping device on one side where the cassette is mounted in the cassette recess.

18. The pumping apparatus of claim 1 , further comprising a display screen configured to display information regarding the status and operation of the pumping apparatus.

19. 19. The pumping device of claim 18, wherein the housing has a front panel oriented for easy viewing by a user or operator of the pumping device on one side where the cassette is attached to the cassette recess, and the display screen is part of the front panel or removably attached to the housing.

20. The pumping apparatus of claim 1 further comprising a pumping unit.

Images