ALIGNMENT FEATURES IN INFUSION PUMP FOR VERTICALLY ORIENTED IV TUBES

Abstract

Features of infusion pump alignment for vertically oriented IV tubing are described. In one example, an infusion pump housing includes a tubing channel with a radial curve to bend an IV tubing from a horizontal to a vertical orientation when the infusion pump is positioned for operation. The housing also includes a cover with a first and second side divided by the tubing channel. The infusion pump has a gate connected to the housing to enclose the tubing channel and the cover. The gate includes a cavity sized to receive the cover when the gate is in the closed position. The cover is configured to engage the cavity to prevent the gate from closing if the IV tubing is not positioned along the tubing channel.

Description

ALIGNMENT FEATURES IN INFUSION PUMP FOR VERTICALLY ORIENTED IV TUBES Field of Invention Infusion pumps, including large-volume (LVP) pumps, are designed to move fluid through an intravenous (IV) line from a fluid supply to a patient. Infusion pumps move fluid through the IV line using one or more actuators that apply force to a portion of the tubing. The rate at which fluid moves is based on the frequency at which force is applied to the IV line. Infusion pumps commonly use a gate or similar mechanism to secure a portion of the IV line to the actuators. Other pumps require specialized IV line assemblies that are integrated with tubing carriers or overmoldings that are coupled to the pump actuators. Background of the Invention One problem with common infusion pumps is that IV tubing often becomes obscured after it is loaded and a gate closes. As the gate closes, the IV tubing can become misaligned, crimped, folded, or compressed, thus obstructing the flow of medication to a patient. Misalignment can result from slack in the IV tubing or a portion of the gate pulling or pressing on a section of the IV tubing as the gate closes. In some cases, misalignment can cause an IV tubing to crack or develop a hole, allowing medication to leak into the pumping mechanism and / or the infusion pump's electronics. An operator may not notice misalignment until after infusion therapy has begun, potentially endangering a patient. Brief Description of the Invention This description describes an infusion pump configured to administer intravenous (“IV”) fluids to a desired source, such as a human or animal (e.g., a patient). The infusion pump includes guides, ribs, or interlocking or mesh plates, retaining knobs, and / or rails configured to deliver and retain an IV tubing within a defined IV tubing channel. The described guides, ribs, or interlocking plates, retaining knobs, and / or rails may be located on a front housing, the outer side of a gate, and / or the inner side of a gate. During operation, the described guides, ribs, or interlocking plates, retaining knobs, and / or rails are configured to move or direct an IV tubing to a defined position within an IV tubing channel during an autopositioning process.The interlocking ribs / plates are configured to prevent the gate from closing if the IV tube is misaligned, such as when the guides, retaining knobs, and rails have failed to retain the IV tube. The illustrative configurations described herein are functional with conventional IV tubing. As a result, no specialized intravenous tubing, receptacles, cartridges, or additional parts are required. The materials for the various components of the qqqq in / ίζηζ / E / γίΛΐ infusion pumps described below may include metal, plastic, rubber, and combinations thereof that allow for prolonged use without material deformation. The aspects of the subject matter described herein may be useful alone or in combination with one or more of the additional aspects described herein. Without limiting the foregoing description, in a first aspect of this description, an infusion pump for administering an intravenous (“IV”) fluid includes a drive area configured to engage a first portion of an IV tubing in a vertical orientation when the infusion pump is set up for operation. The drive area includes an upper end for receiving the IV tubing from a fluid container and a lower end for delivering the IV tubing to a patient. The housing also includes a tubing channel located at the upper end of the drive area. The tubing channel has a surface curvature and width to accept a lower portion of a second IV tubing.At least a portion of the tubing channel has a radial bend to allow the IV tubing to be folded from a horizontal to a vertical orientation when the infusion pump is positioned for operation. The housing further includes two parallel cover rails provided on each side of the tubing channel. The cover rails have widths that extend outward from the tubing channel. The housing further includes a cover having a first side and a second side divided by the cover rails. The first and second sides are connected to the cover rails, respectively, and have widths equal to or less than the widths of the cover rails. The example infusion pump also includes a gate connected to the housing and configured to enclose the drive area, tubing channel, cover rails, and housing cover.The gate includes a cavity sized to receive the cover rails and the cover itself when the gate is in the closed position. The cover and cover rails are configured to engage with the cavity to prevent the gate from closing if the second part of the IV tube is not positioned between the cover rails along the tube channel. According to a second aspect of the present description, which may be used in combination with any other aspect listed herein, unless otherwise stated, each of the deck rails includes a retaining knob configured to retain the second part of the IV tube within the tube channel. According to a third aspect of this description, which may be used in conjunction with any other aspect listed herein, unless otherwise stated, the first side of the cover includes a cutout located at one end opposite an end connected to the respective cover rail. The cutout reduces the width of the first side of the cover at the location of the cutout. The first side of the cover and the cutout work together to cause a second, misaligned portion of the IV tube to extend further from the tube channel, thus exaggerating the misalignment. According to a fourth aspect of the present description, which may be used in combination with any other aspect listed herein, unless otherwise stated, the cavity includes a tab that is configured to fit within the cutout on the first side of the cover. According to a fifth aspect of the present description, which can be used in combination with QQQQ Ln / Lznz / E / YILI any other aspect listed herein, unless otherwise stated, the gate cavity is defined by an upper prealignment guide that is configured to contact or be adjacent to an upper deck surface, and a lower prealignment guide that is configured to contract or be adjacent to a lower deck surface. According to a sixth aspect of the present description, which may be used in combination with any other aspect listed herein, unless otherwise indicated, the upper pre-alignment guide includes channels configured to engage with or receive the respective deck rails. According to a seventh aspect of the present description, which may be used in combination with any other aspect listed herein, unless otherwise indicated, the housing further includes deck rails that are positioned adjacent to the respective deck rails and located on each side of the tube channel, and guide ribs that are positioned at a distance from the respective deck rails and located on each side of the tube channel to retain the second part of tube IV, wherein the distance between the deck rails and the guide ribs forms gaps. According to an eighth aspect of the present description, which may be used in combination with any other aspect listed herein, unless otherwise indicated, the lower pre-alignment guide includes cutouts configured to receive, respectively, the lower rails, and a guide section configured to be received in the gaps formed between the lower rails and the guide ribs, wherein a lower surface of the lower pre-alignment guide is configured to contact or be adjacent to the guide ribs. According to a ninth aspect of the present description, which may be used in combination with any other aspect listed herein, unless otherwise indicated, the lower rails, gaps, and guide ribs are configured to interlock or overlap with the lower pre-alignment guide to prevent the gate from closing if the second part of tube IV is not positioned along the tube channel. According to a tenth aspect of the present description, which may be used in combination with any other aspect listed herein, unless otherwise indicated, the guide section has at least one of a U-shape or a V-shape. According to an eleventh aspect of the present description, which may be used in combination with any other aspect listed herein, unless otherwise indicated, the gate further includes a plunger aligned with or adjacent to the tubing channel when the gate is in the closed position, the plunger having a surface curvature and width to accept an upper side of the second part of the IV tubing, at least a portion of the plunger having a radial curvature to bend the IV tubing from the horizontal orientation to the vertical orientation when the infusion pump is positioned to operate, wherein the width of the plunger allows the plunger to fit between parallel deck rails when the gate is in the closed position. According to a twelfth aspect of this description, which may be used in combination with any other aspect listed herein, unless otherwise stated, the accommodation QQQQ Ln / ί7P7 / E / YILI further includes a closure section located along at least the upper side of the housing. The closure section includes at least one rib positioned along the upper side of the housing, at least one rib extending vertically from the upper side and defining a tube viewer that is wide enough to allow the second part of the IV tubing to pass between the edges of the tube viewer, and a ribbed tube channel aligned with the tube viewer. The ribbed tube channel is oriented horizontally when the infusion pump is positioned for operation. The ribbed tube channel is located adjacent to the tube channel and is configured to contact the lower side of the second part of the IV tubing. According to a thirteenth aspect of the present description, which may be used in combination with any other aspect listed herein, unless otherwise indicated, the plunger in connection with the tube channel and the grooved tube channel encloses or surrounds the lower and upper sides of the second part of tube IV and provides bending of the second part of tube IV from the horizontal orientation to the vertical orientation. According to a fourteenth aspect of the present description, which may be used in combination with any other aspect listed herein, unless otherwise indicated, the housing further comprises a clamp at one end of the tube channel configured to receive the second part of tube IV. According to a fifteenth aspect of this description, which may be used in conjunction with any other aspect listed herein, unless otherwise stated, an infusion pump apparatus for administering an intravenous (“IV”) fluid comprises a housing and a gate. The housing includes a drive area configured to engage a first portion of an IV tubing in a vertical orientation when the infusion pump is positioned for operation. The drive area includes an upper end for receiving the IV tubing from a fluid container and a lower end for delivering the IV tubing to a patient.The housing also includes a housing tube channel located at the upper end of the drive area. The housing tube channel has a surface curvature and width to accept the lower side of a second portion of the IV tubing. At least a portion of the housing tube channel has a radial curvature to bend the IV tubing from a horizontal to a vertical orientation when the infusion pump is positioned for operation. The housing further includes a first set of housing ribs located on a first side of the housing tube channel and a second set of housing ribs located on a second, opposite side of the housing tube channel. The gate connects to the housing and is configured to enclose the drive area, the housing tube channel, and the housing ribs.The gate includes a gate tube channel configured to align with the housing tube channel when the gate is in a closed position, and a first set of gate ribs located on a first side of the gate tube channel and a second set of gate ribs located on a second opposite side of the gate tube channel. The first and second sets of housing ribs are configured to interlock or overlap with the first and second sets of ribs. QQQQ Ln / Lznz / E / YILI gate ribs when the gate is in the closed position. According to a sixteenth aspect of the present description, which may be used in combination with any other aspect listed herein, unless otherwise indicated, each of the first and second housing rib sets includes at least two parallel ribs and each of the first and second gate rib sets includes at least two parallel ribs. According to a seventeenth aspect of the present description, which may be used in combination with any other aspect listed herein, unless otherwise indicated, the housing tube channel, the gate tube channel, the first and second housing rib assemblies, and the first and second gate rib assemblies include at least one made of plastic, rubber, or combinations thereof. According to an eighteenth aspect of the present description, which may be used in combination with any other aspect listed herein, unless otherwise indicated, the gate further includes an upper pre-alignment guide that is configured to contact or be adjacent to an upper rib of the first and second housing rib sets. According to a nineteenth aspect of the present description, which may be used in combination with any other aspect listed herein, unless otherwise indicated, the gate tube channel includes a plunger having a surface curvature and width to accept an upper side of the second part of the IV tube, at least a portion of the plunger having a radial curvature to bend the IV tube from the horizontal orientation to the vertical orientation when the infusion pump is positioned to operate. According to a twentieth aspect of the present description, which may be used in combination with any other aspect listed herein, unless otherwise indicated, the gate further includes an upper end configured to cover the upper end of the drive area, wherein the gate tube channel, the first set of gate ribs, and the second set of gate ribs are located at the upper end of the gate. According to a twenty-first aspect of the present description, any of the structure and functionality illustrated and described in connection with Figures 3 to 40 may be used in combination with any of the structure and functionality illustrated and described in connection with any of the other Figures 3 to 40 and with one or more of any of the above aspects. In light of the above aspects and the description herein, it is therefore an advantage of the present description to provide an infusion pump that ensures adequate IV tube loading. Another advantage of the present description is to provide an infusion pump that prevents an IV tube from becoming misaligned, crimped, folded, or compressed when an infusion pump gate is closed. Another advantage of the present description is to provide an infusion pump that prevents a gate from closing when the IV tube is misaligned. QQQQ Ln / ί7Π7 / E / YΙΛΙ An additional advantage of the present description is that it provides an infusion pump that can operate with standard, non-specialized tubing and pump assemblies. The additional features and advantages are described in, and will be evident from, the following detailed description and figures. The features and advantages described herein are not exhaustive, and in particular, many additional features and advantages will be apparent to a person skilled in the art from the figures and description. Furthermore, any particular embodiment need not have all the advantages listed herein, and it is expressly permissible to claim individual advantageous embodiments separately. On the other hand, it should be noted that the language used in the specification has been selected primarily for the purposes of readability and instruction, and not to limit the scope of the inventive matter. Brief Description of the Figures Figures 1 and 2 are diagrams of known infusion pumps that use different constructions to retain an IV tube. Figure 3 is a diagram of an exemplary infusion pump, according to an exemplary modality of the present description. Figures 4 to 7 are diagrams that illustrate self-alignment features of the infusion pump of Figure 3, according to exemplary modalities of the present description. Figures 8 to 12 are cross-sectional diagrams of at least some of the self-alignment features described in relation to Figures 4 to 7, according to exemplary modalities of the present description. Figures 13 to 17 are cross-sectional diagrams of at least some of the self-alignment characteristics described in relation to Figures 4 to 7, according to exemplary modalities of the present description. Figure 18 is a self-alignment feature diagram of an inner part of the infusion pump gate of Figure 3, according to an exemplary modality of the present description. Figures 19 to 21 are diagrams of different modalities of at least some of the self-alignment characteristics described in relation to Figures 4 to 7, according to an exemplary modality of the present description. Figures 22 to 24 are diagrams of different modalities of at least some of the self-alignment characteristics described in relation to Figures 4 to 7, according to an exemplary modality of the present description. Figures 25 to 29 are diagrams of the self-alignment characteristics of the interlocking ribs of the infusion pump in Figure 3, according to exemplary modalities of the present description. Figures 30 to 40 are diagrams showing alternative modalities of at least some of the self-alignment features described in relation to Figures 4 to 7, according to exemplary modalities of the present description. QQQQ Ln / ίZΖΠZ / Β / YΙΛΙ Detailed Description of the Invention This description refers, in general terms, to an infusion pump apparatus that includes elements configured to secure at least a portion of an IV tubing within a tubing channel. The illustrative description details self-aligning features of an infusion pump that prevent a gate from closing when an IV tubing is out of a desired position. The illustrative features described herein are located within a gate of an infusion pump. The gate, when closed, normally conceals the tubing placement from the user's view. The self-aligning features described herein ensure that an IV tubing is not bent, crimped, folded, compressed, or partially occluded without the clinician's knowledge. The self-aligning features include mechanical positioners configured to guide and secure an IV tubing within a designed area.Automatic IV tube placement eliminates the need for expensive electric tube placement sensors, which are prone to false alarms over time. The self-aligning features described herein consequently prevent IV tube obstruction during medication administration in a cost-effective manner. Examples of self-aligning features of the infusion pump described herein may be located on a gate, within an actuation area of ​​an infusion pump, or a combination of both. Self-aligning features may include a cover fence, a rail beneath the cover, a recess and corresponding gate V-guide, retaining knobs, internal gate rib protectors, an upper pre-alignment guide, a lower pre-alignment guide, a tube plunger, and / or a gate cover cavity. It is appreciated if the exemplary infusion pump includes all of the above features or at least a subset thereof. Reference is made throughout to infusion pumps configured to receive IV tubing in a vertical orientation (e.g., a first orientation). In other words, the infusion pump receives an IV tubing on its upper side or section. However, it should be noted that, in other configurations, the self-aligning features of the infusion pump described herein can be provided to receive IV tubing oriented horizontally (or at another desired angle) (e.g., a second orientation). In these other configurations, the IV tubing enters on one side of the infusion pump. In one configuration, the infusion pump can be oriented in different positions for operation, so that the tubing can be arranged differently for different procedures. Likewise, the infusion pumps described herein include generally vertically oriented actuators for pumping fluid through IV tubing. However, in other configurations, the actuators may be positioned horizontally (or at another desired angle). It will be noted that the orientation of the actuators may not necessarily correspond to the orientation of an IV tubing entering the infusion pump. For example, an infusion pump may receive an IV tubing in a horizontal orientation but have the actuators aligned vertically. Again, the actuators may be oriented differently for different procedures. QQQQ Ln / Lznz / E / YILI This document also refers to a minimum clearance between the self-aligning features when an infusion pump gate is in the closed position. The minimum clearance may be from 0.05 millimeters (mm) to 10 millimeters, preferably as small as manufacturing tolerances allow. Generally, the minimum clearance is less than the diameter of an IV tubing, preferably less than the diameter of a fully compressed IV tubing, to prevent an infusion pump gate from closing when the IV tubing is bent or otherwise misaligned. Known infusion pumps Figures 1 and 2 are diagrams of known infusion pumps that use different constructions to attempt to retain an IV tubing within a drive area. Specifically, Figure 1 shows a 102 infusion pump that uses clamps or retaining knobs to secure an IV tubing. Figure 2 shows another infusion pump that uses custom overmoldings or cartridges to hold IV tubing. The infusion pump 102 shown in Figure 1 includes a drive area 104 closed by a gate 106. An IV tube 108 is routed through the drive area 104. In this illustration, the actuators 110 are located within a main housing of the infusion pump. The actuators 110 can be operated by spring-loaded back pushers 111 positioned in the gate 106. The back pushers 111 compensate for component tolerance buildup in the drive area 104 and apply a constant force to the IV tube 108. The compression provided by the actuators 110 moves the fluid through the IV tube 108. Closing the gate 106 causes the back pushers 111 to contact or be near a portion of the IV tube 108 within the drive area 104.The actuators 110 are controlled to push sequentially against the IV tube 108 to move or pump a fluid through the tube 108 when the gate 106 is closed. The known infusion pump 102 is configured so that the IV tubing 108 is oriented vertically through the drive area 104. The IV tubing 108 at its upper end in the drive area 104 is connected to a fluid container. The IV tubing 108 at its lower end in the drive area 104 is connected to a patient. The infusion pump 102 includes a clamp 112 or sliding clamp that is configured to connect to the IV tubing 108 at the top of the infusion pump 102. Insertion of the clamp 112 into a slot causes the gate 106 to open. Placing clamp 112 in the slot also occludes IV tubing 108 to prevent fluid flow while IV tubing 108 is loaded into infusion pump 102. After securing IV tubing 108 in the actuator area 104, gate 106 is closed and clamp 112 is removed, allowing fluid to flow through IV tubing 108. The infusion pump 102 includes retaining clamps 120a, 120b, and 120c, which are configured to secure the IV tubing 108 in place. Retaining clamps 120 are located within the drive area 104 and are obscured from view when the gate 106 is closed. Retaining clamps 120 do not prevent the IV tubing 108 from bending or kinking. Instead, clamps 120 QQQQ iP / i7P7 / E / YILI are configured to retain the IV tube 108 only in the contact location. The IV tube 108 could loosen or become misaligned during loading or when the gate 106 is closed. In addition, in some cases, the rear pushers 111 may exert tension on the IV tube 108, causing it to be pulled out of place. The exemplary retaining clamps 120a, 120b, and 120c are positioned to fit within the corresponding channels 122a, 122b, and 122c in the gate 106 when the gate is moved to the closed position. The arrangement between the channels 122 and the clamps 120 is designed to prevent the IV tube 108 from shifting after the gate 106 is closed. However, the arrangement between the channels 122 and the clamps 120 does not prevent an operator from misaligning the IV tube 108 during loading, nor does it prevent the IV tube 108 from becoming misaligned while the gate 106 is closing. Furthermore, the arrangement between the channels 122 and the clamps 120 does not prevent crimping or bending of the IV tube 108. Figure 2 shows a diagram of another known infusion pump 202 that uses overmolds 204a and 204b and a cartridge 206 to secure an IV tube 208 in place. Overmold 204a and cartridge 206 are integrated with the IV tube 208. In addition, overmold 204b is configured to contact a portion of the IV tube 208 that has a wider diameter. While the combination of overmolds 204 and cartridge 206 secures the IV tube 208, the components require the use of a custom IV tube. In many cases, the cost of customizing the IV tube and producing overmolds 204 and cartridge 206 far exceeds the cost of a standard IV tube. Such solutions are not practical for cost reasons, which is especially important in developing countries. In addition, overmolds 204 and cartridge 206 are exclusive to the associated pump 202.A change between pump models or design configuration may require the purchase of corresponding new IV tubing, rendering the old tubing useless even if it's still in stock. Other known infusion pumps (not shown) have a tubing opening along a side section. These pumps have vertically oriented, finger-like actuators. As can be seen, IV tubing placement is complex because an operator must bend the tubing within the actuation area along a defined channel. Furthermore, the use of the channel and the horizontal orientation of the IV tubing create more opportunities for the tubing to be bent more than intended or crimped during placement. Additionally, the complex placement procedure creates more opportunities for an operator to misalign at least a portion of the IV tubing, which may go undetected and cause an unwanted occlusion or leakage. Exemplary infusion pump Figure 3 is a diagram of an exemplary infusion pump 300, according to an exemplary embodiment of the present description. The exemplary infusion pump 300, as described in more detail below, includes one or more self-aligning features, including guides, interlocking ribs, retaining knobs, and rails to ensure proper placement of an IV tubing 301. These features are housed in a front casing, outer gate, and / or inner gate within a drive area 302 of the infusion pump 300. A first portion of the IV tubing 301 is provided in the drive area 302. A second portion of the tubing is provided upstream. QQQQ Ln / ί7Π7 / E / YΙΛΙ IV 301 at an upper end 320 of the drive area 302. In some models, the first part of the IV tubing in drive area 302 is oriented vertically when the infusion pump 300 is positioned for operation. In some models, the second part of the IV tubing at the upper end 320 of drive area 302 is bent between a horizontal and a vertical orientation. During operation, self-aligning elements cause at least a portion (the second portion) of an IV tube 301 to move into a desired position. Additionally, at least some of the self-aligning features cause the IV tube 301 to be held in place during operator placement or closure of a gate 304. Furthermore, at least some of the self-aligning elements prevent the gate 304 from closing if at least a portion of the IV tube is misaligned or out of position. In one example, guides and rails cause at least a portion of the IV tube 301 to move into a desired position. Interlocking ribs are configured to prevent the gate 304 from closing if at least a portion of the IV tube 301 is misaligned. Additionally, retaining knobs are configured to hold at least a portion of the IV tube 301 in place for proper positioning opposite an IV tube positioning plunger during the loading and gate closing processes. The self-aligning features described herein are functional with conventional IV tubes, so no specialized IV tubes, receptacles, cartridges, or additional parts are required. The exemplary infusion pump 300 can include any pump capable of delivering intravenous therapy to a patient through one or more IV tubing or line assemblies. Examples include a linear peristaltic pump, a large-volume pump (“LVP”), an ambulatory pump, and / or a multichannel pump, etc. A linear peristaltic pump (such as the infusion pump 102 in Figure 1) uses cams on a camshaft to compress a portion of tubing as the camshaft rotates. Often, one or more fingers attached to the cams make contact with the tubing during a certain period of rotation. The compressed rotation causes a defined amount of fluid to pass through the tubing. LVPs typically use one or more fingers or arms to compress a portion of the intravenous (IV) therapy tubing. The timing of the fingers' movement on the tubing causes a steady or near-steady flow of fluid through the tubing. The exemplary infusion pump 300 in Figure 3 includes a display interface 310 for showing pump information, including a QR code or barcode for transmitting a pump identifier or other infusion-related information. The display interface 310 can also facilitate programming of the pump 300 via a touchscreen, membrane switch, combinations thereof, or another type of user interface. The infusion pump 300, in one embodiment, also includes a housing 312 configured to enclose electronic devices and actuators, which are located within the actuation area 302. The infusion pump 300 further includes the gate 304, shown in Figure 3 in a closed position enclosing the actuation area 302. The exemplary gate 304 is configured (e.g., hinged) to open. QQQQ Ln / įZРZ / В / YILI thus providing access to the drive area 302. A physician can open the gate 304 to insert a portion of the IV tube 301 into the drive area 302, for example, by placing the IV tube in the self-aligning elements described above that hold the IV tube in place for drive. The exemplary gate 304 in the illustrated embodiment connects to the housing 312 of the infusion pump 300 by means of one or more hinges 314. In the illustrated example, the hinges 314 are positioned on one side of the infusion pump 300, causing the gate 304 to be offset from the interface 310. This configuration allows a clinician to insert the IV tubing 301 while still being able to see the interface 310. Otherwise, the hinge placement between the gate 304 and the interface 310 would cause the gate 304 to open in the opposite direction, thus obstructing the view of the interface 310. The materials for the various components of the infusion pump 300 described below may include metal, plastic, rubber, and combinations thereof. As illustrated in Figure 3, IV tubing 301 enters (from a fluid flow perspective) the infusion pump 300 at the upper end 320 of the drive area 302. At the upper end 320, IV tubing 301 is connected to a fluid container, such as an IV bag. IV tubing 301 is generally oriented vertically above the upper end 320 to allow gravity to draw fluid from the fluid container into IV tubing 301 and to allow air to accumulate at the top of a fluid container, such as an IV bag, thereby introducing IV fluid into tubing 301. IV tubing 301 exits (from a fluid flow perspective) the infusion pump 300 at the lower end 322 of the drive area 304. At the lower end 322, IV tubing 301 extends to its delivery destination, for example, a patient. In some embodiments, the 300 infusion pump example may include gate seals and / or a gate top configured to enclose or protect an infusion pump drive area from contaminants. The positioning of the seals relative to the gate is configured to isolate an independent drive area from manufacturing tolerance variations of the overall gate and / or pump housing. In one embodiment, a seal is formed at the edges of a gate, which relaxes the tolerance ranges of the pump housing and gate, thereby reducing manufacturing costs. The description of the gate seals and gate top can be found in U.S. Applications Nos. 15 / 855,536 and 15 / 855,550, which are incorporated herein by reference and upon which they are based. Types of self-alignment features Figures 4 through 7 are diagrams illustrating self-aligning features provided at the upper end 320 of the housing 312 of the drive area 302 of the infusion pump 300, according to exemplary embodiments of the present description. The self-aligning features include a cover 402 (shown as cover 402a and 402b) and a cover rail 403 that defines an opening or gap for an IV tubing channel 404 (e.g., a tubing channel 404 for housing 312). The opening or gap defined by the cover rail 403 divides the cover 402 into two sides, including a first side 402a and a second side 402b. Each of the first QQQQ Ln / Lznz / E / YILI and second side 402a and 402b of deck 402 has edges that connect to or are adjacent to the respective rail of deck 403. The example cover 402 includes a flange or bar that extends horizontally when the infusion pump 300 is positioned for operation. The cover 402 is configured to have a width in the horizontal direction that extends from the closure section 440 to enclose at least a portion of the IV tubing 301 that bends between the horizontal and vertical orientations. Cover 402 may include a cutout 410 that is sized to allow the closure of gate 304. The shape of cutout 410 is configured to be flush against a cavity in cover 708, as shown in Figure 7. The connection discharge prevents gate 304 from closing if IV tube 301 is positioned between cover 402 and the cavity in cover 708. In the illustrated embodiment, cutout 410 is sized to have a width equal to one width of cover rail 403, then decreases in width as cover 402 approaches hinge 314. This sizing of cover 402 at cutout 410 causes any slight misalignment of IV tube 301 outside the tube channel 404 to move further away from the tube channel 404 and into the area of ​​cutout 410. This exaggerated misalignment is more visible to an operator, and is more likely to prevent gate 304 from closing. In the illustrated edition, only cover 402a includes cutout 410. In other editions, cover 402b may also include a cutout. Furthermore, in other editions, cutout 410 may have different shapes and / or dimensions. Alternatively, cover 402a may not include cutout 410. Exemplary deck rail 403 is configured to direct IV tube 301 into the tube channel 404. Furthermore, deck rail 403 (on each side of the tube channel 404) has a width that is at least greater than one width of IV tube 301, preventing IV tube 301 from easily dislodging from the tube channel 404. In some instances, deck rails 403 have a width appropriate for capturing IV tube 301 and guiding it into place in the tube channel 404. In some embodiments, the width of deck rail 403 (e.g., the outward extension from drive area 302) is at least 50% greater than one width or diameter of IV tube 301. In some embodiments, the exemplary deck rail 403 is configured to have a height at a first end 430 that is flush with a sealing section 440. In other embodiments, the deck rail 403 has a height at the first end 430 that is less than the height of the sealing section 440. The height of the deck rail 403 decreases to a second end 432, which can be adjusted to self-aligning elements in the gate 304. In other embodiments, the height of the deck rail 403 is the same at the first end 430 and the second end 432. As illustrated in Figure 4, the example tube channel 404 has a radial curvature that permits or causes a portion of the IV tube 301 to bend (without occluding) from a first orientation (e.g., a horizontal orientation) in the closure section 440 to a second orientation (e.g., a vertical orientation) within the drive area 302. The cover rail 403 is configured to retain the bent IV tube 301 in place within the tube channel 404. The tube channel 404 also has a surface curvature and width to receive the IV tube 301 and / or enclose QQQQ Ln / Lznz / E / YILI configured to engage with the corresponding self-aligning elements in the gate 304. For example, a vou-shaped guide 706, shown in Figure 7, is configured to fit within the gap 504 defined by the rails 502 and ribs 506. The guide 706 in the gate 304 may also be sized and / or shaped to engage or otherwise become recessed with at least portions of the cover cavity 708 and / or pre-alignment guides 704 to retain the IV tube 301 and position and / or prevent the gate 304 from closing if the IV tube 301 is at least slightly misaligned or out of the tube channel 404. The exemplary infusion pump 300 also includes at least one retaining knob 508 located on an inner wall of the deck rail 403. One retaining knob 508 may be located on each deck rail 403. In some embodiments, the retaining knob 508 may be integrally formed with the deck rail 403. In other embodiments, the retaining knob 508 may be physically connected to the deck rail 403 by means of one or more chemical or mechanical fasteners. Figures 5 and 6 show diagrams of retaining knob 508, which includes a tab extending outward from the deck rail 403 and into the tube channel 404. Retaining knob 508 is positioned near an inlet of the tube channel 404 and is configured to retain IV tube 301 within the tube channel 404. Accordingly, retaining knob(s) 508 prevent IV tube 301 from bending when gate 304 is closed. Retaining knob(s) 508 also help retain IV tube 301 when the tube is loaded into the tube channel 404. Figure 7 is a diagram of self-aligning features provided on the gate 304 of the infusion pump 300, according to an illustrative embodiment of the present description. In the illustrated example, the gate 304 includes an upper end 702 that is configured to contact and cover the upper end 320 of the drive area 302 of the infusion pump 300, which includes the shut-off section 440. The upper end 702 includes an upper-end tube channel 703 that is configured to align with and operate with the tube channel of the shut-off section 440 to enclose or otherwise contact the IV tubing 301, thereby preventing containments from entering the drive area 302. The upper-end example 702 includes self-aligning features including lower pre-alignment guides 704, a V-guide 706, a gate cover cavity 708, upper pre-alignment guides 710, and a plunger 712. A curved flange 701 is also configured to assist with pre-alignment of the IV tube 301. At least a portion of an upper side of the lower pre-alignment guide of example 704 is configured to contact (or at least be adjacent to) a lower side of the covers 402 and / or a lower side of the sleeve rails 403 when the gate 304 is in the closed position. In addition, at least a portion of a lower side of the lower pre-alignment guide 704 is configured to come into contact (or at least be placed adjacent to) an upper side of the inner gate guide ribs 506 when the gate 304 is in the closed position.Additionally, when the gate is in the closed position, the inner rails 502 are configured to engage or slide into the cutouts 720 in the lower pre-alignment guide 704 that are adjacent to the V-guide 706. QQQQ ίΠ / ί7Π7 / E / YΙΛΙ The exemplary V-shaped guide 706 (e.g., a guide section) is configured to at least partially enclose the IV tube 301 between the rail locations 502 and the ribs 506 (i.e., the vertical portion of the ribs 506). Accordingly, guide 706 further retains the IV tube 301 while preventing it from bending or kinking. In addition, interlocking or overlapping between the rails 502, ribs 506, V-guide 706, and guide 704 makes it virtually impossible for the gate 304 to close if the IV tube 301 is even slightly misaligned. While the example embodiment shows a V-shaped guide 706, it should be appreciated that in other embodiments, guide 706 may be U-shaped, triangular, etc., to surround or at least partially enclose the IV tube 301. In some embodiments, the exemplary top-end 702 in Figure 7 may include the gate cover cavity 708. The exemplary gate cover cavity 708 is configured to accommodate the respective covers 402 and / or cover rails 403. The cavity 708 may have dimensions that align with or confirm the dimensions of the covers 402 and / or cover rails 403 to allow the covers 402 and / or cover rails 403 to fit within the cavity 708. The gate cover cavity 708, combined with the covers 402 and / or cover rails 403, creates an interlocking or overlapping structure when the gate 304 is moved to a closed position. Any misalignment of tube IV causes tube IV to be positioned in one of the covers 402 and prevents the covers 402 from being pushed into the respective cavities 708. Consequently, the positioning prevents gate 304 from closing. The upper end example 702 in Figure 7 may also include the upper prealignment guide 710 in some embodiments. A lower surface of the upper prealignment guide 710 is configured to cover and / or contact a top surface of the covers 402 and / or the cover rails 403 when the gate 304 is moved to the closed position. The upper prealignment guide 710 may include channels 730 configured to engage and / or accommodate the cover rails 403. The upper prealignment guide 710 provides additional interlocking or overlapping grooved elements that prevent the gate 304 from closing if at least a portion of the IV tube 301 is misaligned or otherwise out of the tube channel. The exemplary plunger 712 of Figure 7 includes a channel that is adjacent to, connected with, and / or integrally formed with the upper-end tube channel 703. The channel has dimensions and a surface curvature sized and / or shaped to accept or otherwise enclose at least one upper side of the IV tube 301. The plunger 712 has a radial curvature configured to accommodate or cause bending of the IV tube 301 on the deck rails 403 within the tube channel 404. In some embodiments, the plunger 712 is configured to operate in conjunction with the deck rails 402 to enclose and retain the IV tube within the tube channel 404 when the gate 304 is moved to a closed position. The example plunger 712 is configured to prevent the IV tube 301 from extending upward where it is bent between the horizontal and vertical orientations.In some embodiments, plunger 712 can apply force to tube IV 301 causing it to be retained in the channel of tube 404 when gate 304 is moved to the closed position. Self-alignment modes QQQQ Ln / Lznz / E / YILI Figures 8 through 12 are cross-sectional diagrams of at least some of the self-aligning features described in relation to Figures 4 through 7 along longitudinal cut lines (1), (2), (3), and (4), according to illustrative modalities of the present description. Figure 8 shows a diagram of an upper end 320 of the infusion pump 300 with the gate 304 in the closed position. An upper diagram 800 shows the infusion pump 300 in the solid state, while an intermediate diagram 825 shows the infusion pump 300 with a partially transparent outer cover of the gate 304. Additionally, diagram 850 shows the infusion pump with a gate cover 304 removed to expose the self-adjusting elements including cover 402, cover rails 403, rail 502, rib 506, gap 504, and pre-alignment guides 704 and 710. In the illustrated mode, the cutting line (1) corresponds to the cross-section perspective view shown in Figure 9, the cutting line (2) corresponds to the cross-section perspective view shown in Figure 10, the cutting line (3) corresponds to the cross-section perspective view shown in Figure 11, and the cutting line (4) corresponds to the cross-section perspective view shown in Figure 12. Figure 9 shows a cross-section of the infusion pump 300 along line (1) with the cover 402, gap 504, and ribs 506 visible. The cover 402 is shown as housed or positioned within the cavity 708. Positioning the cover 402 in the cavity 708 causes it to be blocked or overlapped with the upper pre-alignment guide 710 and the lower pre-alignment guide 704. The overlap between the cover 402 and the guides 704 and 710 leaves virtually no room for the IV tubing 301. Therefore, any misalignment of the IV tubing 301 would prevent the gate 304 from closing. Figure 9 also shows the upper end 702 coupled with the closing section 440. The polished coupling prevents foreign objects from entering the drive area 302. In addition, the coupling prevents the IV tubing 301 from becoming misaligned at the upper end 320 of the infusion pump 300. Figure 10 shows a cross-section of the infusion pump 300 along line (2) on the IV tubing 301. In the illustrated example, the locking section 440 includes a grooved tube channel 444 that is configured to clamp at least one lower side of the IV tubing 301. The locking section 440 works with the plunger 712 to enclose the IV tubing 301 and cause at least a portion of the tubing 301 to bend from a horizontal orientation (just below the upper end 702) to a vertical orientation in the drive area 302. The plunger 712 also works in conjunction with the tube channel 404 to further enclose the IV tubing 301 at the bend. The impeller 712 and V-guide 706 help retain the IV tubing 301 in place.A top-end flange 1002 together with the top-end channel 703 causes at least a portion of the IV tube 301 to bend from a vertical or angled orientation just before entering the top end 702 to the horizontal orientation (just below the top end 702). Figure 11 shows a cross-section of the infusion pump 300 along the cut line (3), which is provided along the cover rail 403. In the illustrated example, a cross-section of the cover rail 403 is visible in addition to the cover 402, the rail under the cover 502, the gap 504, the inner gate guide ribs 506, the upper pre-alignment guide 710, the gate cover cavity 708, and the V-guide 706. The self-aligning elements shown in Figure 11 create an overlapping or interlocking structure that leaves minimal or no gaps when the gate 304 is moved to a closed position. Therefore, the polished self-aligning elements prevent gate 304 from closing if at least a portion of tube IV 301 is misaligned. Figure 12 shows a cross-section of the infusion pump 300 along the cut line (4), which is similar to the cut line (1) but on the opposite side of the IV tubing 301. In the illustrated example, the cover 402, cavity 708, upper prealignment guide 710, and lower prealignment guide 704 are shown overlapping to interlock. The overlap between the cover 402 and the guides 704 and 710 leaves virtually no room for the IV tubing 301. Consequently, any misalignment of the IV tubing 301 prevents the gate 304 from closing. Figures 13 through 17 show different configurations of at least some of the self-aligning features described above for side cut lines (1), (2), (3), and (4). Figure 13 is a diagram of an upper end 320 of the infusion pump 300 with the gate 304 in the closed position. A left diagram 1300 shows the infusion pump 300 in a solid state, while a middle diagram 1325 shows the infusion pump 300 with a partially transparent outer gate cover 304. Additionally, diagram 1350 shows the infusion pump with a gate cover 304 removed to expose the self-aligning elements, including the cover 402, cover rails 403, rail 502, guide rib 506, gap 504, and pre-alignment guides 704 and 710. Figure 14 shows a cross-section of the infusion pump 300 along the side cut line (1), which passes through the V-guide 706 and the lower pre-alignment guide 704. The illustrated example shows the V-shaped profile of the guide 706 connected or integrally formed with the lower pre-alignment guides 704a and 704b. The illustrated example also shows the tubing channel 404 providing support for one lower side of the IV tubing 301 at the gap 504. Together, the tubing channel 404 and the V-guide 706 retain the IV tubing 301 in place. The V-shape of guide 706 provides guidance or alignment so that IV tube 301 is directed to the center of the V-shape when gate 304 is moved to a closed position, thus ensuring that IV tube 301 is aligned and retained between the tube channel 404 and guide 706. As illustrated, there is a minimal separation between guides 704 and 706 and wall 1400 of the infusion pump housing 300 312 as a result of the overlapping or interlocking configuration of guides 704 and 706 and wall 1400 at separation 504. This interlocking configuration prevents gate 304 from closing if at least a portion of IV tubing 301 is misaligned. Figure 15 is a diagram of a cross-section of the infusion pump 300 along the lateral cut line (2), which passes through the lower rail 502 and the lower pre-alignment guide 704. The example QQQQ Ln / ί7Π7 / E / YΙΛΙ illustrated shows the overlap or interlocking between the lower prealignment guide 704, the rail under the cover 502 and the wall 1400 of the infusion pump 300. The minimal clearance (if any) between the lower prealignment guide 704, the rail under the cover 502 and the wall 1400 prevents the gate 304 from closing if the IV tube 301 is misaligned. The illustrated example also shows plunger 712 retaining IV tube 301 in place within the tube channel 404. The U-shaped profile of the lower rail 502, along with the protrusion of plunger 712, causes IV tube 301 to be pushed against and retained within the tube channel 404 when gate 304 moves to a closed position. After gate 304 closes, plunger 712 prevents IV tube 301 from moving. Figure 16 shows a cross-section of the infusion pump 300 along the side cut line (3), which passes through the cover 402, the tubing channel 404, and the gate cover cavity 708. The illustrated example shows a guide wave profile of the cover 402, which is configured to assist the V-guide 706 in capturing the IV tubing 301 relative to the plunger 712. The opening provided by the cover 402 (between sides 402 and 402b) is configured to direct the IV tubing 301 into the tubing channel 404. When the gate 304 is closed, the plunger 712 contacts the other side of the IV tubing 301, thereby retaining the tubing against the tubing channel 404. The illustrated version also shows cover 402 in contact with cavity 708. As shown in Figure 16, there is minimal or no separation between cover 402 and cavity 708, which is defined in part by the lower pre-alignment guide 704. The overlap or interlocking between cover 402 and cavity / 708 / lower pre-alignment guide 704 prevents gate 304 from closing when IV tube 301 is misaligned. Figure 17 shows a cross-section of the infusion pump 300 along the side cut line (4), which passes through the cover 402 and the cover rail 403. The illustrated example again shows the guide wave profile of the cover 402 in addition to the profile of the cover rails 403. As described above, the opening provided by the cover 402 and defined by the cover rails 403 is configured to direct the IV tubing 301 into the tubing channel 404 so that when the gate 304 is closed, the plunger 712 comes into contact with the other side of the IV tubing 301, thereby retaining the tubing against the tubing channel 404. The illustrated embodiment also shows cover 402 in contact with cavity 708. As shown in Figure 16, there is minimal or no separation between cover 402 and cavity 708. The overlap or interlocking between cover 402 and cavity 708 prevents gate 304 from closing if IV tube 301 is misaligned. Additionally, the retaining knobs 508, shown in Figure 17, hold IV tube 301 in place after insertion. Figure 18 shows a self-aligning feature diagram of an inner portion 1800 of gate 304, according to an illustrative embodiment of the present description. The features include a plunger 1801. The example plunger 1801 is configured to support tube IV 301 in a lower portion of the tube IV channel 404. The plunger 1801, in conjunction with the vertical and horizontal portions of the guide ribs 506, prevents gate 304 from closing when tube IV 301 QQQQ Ln / ίΖΠΖ / Β / ΥΙΛΙ is misaligned. In addition, the features of Figure 18 include reliefs 1802 configured to engage with the front housing rails 502 and / or the guide ribs 506. In some embodiments, the reliefs 1802 can engage with the closing section 440. Together, the plunger 1801 and the reliefs 1802 provide alignment and retention of tube IV. Figures 19 through 21 show different modalities of at least some of the self-aligning features described in relation to Figures 4 through 7 above for longitudinal cut lines (1) and (2). Figure 19 is a diagram of an upper end 320 of the infusion pump 300 with the gate 304 transparent to expose the self-aligning elements, which include the cover 402, cover rails 403, rail 502, guide rib 506, and gap 504. Figure 20 shows a cross-section of the infusion pump 300 along line (1) with the cover 402, gap 504, and guide ribs 506 visible. Similar to Figure 9, the cover 402 is located in the cavity of the gate cover 708 and overlaps or interlocks with the upper prealignment guide 710 and the lower prealignment guide 704. In addition, the ribs 506 are adjacent to, overlap, interlock with, or otherwise contact the lower prealignment guide 704. The overlap between the cover 402, ribs 506, and guides 704 and 710 leaves virtually no room for the IV tubing 301. Therefore, any misalignment of the IV tubing 301 prevents the gate 304 from closing. Figure 20 also shows that the gate 304 includes two distinct parts: an outer gate 2002 and an inner gate 2004. The outer gate 2002 includes a housing or casing configured to enclose and / or provide support for the inner gate 2004. The example inner gate 2004 includes, for instance, the gate cover cavity 708, the upper pre-alignment guide 710, and the lower pre-alignment guide 704, which provide self-aligning features for the inner tube. In some examples, the outer gate 2002 and the inner gate 2004 can be formed from the same material as a single piece. In other examples, the outer gate 2002 and the inner gate 2004 are formed separately and mechanically connected to each other. Figure 21 shows a cross-section of the infusion pump 300 along the cut line (2) along the cover rail 403. In the illustrated example, a cross-section of the cover rail 403 is visible, in addition to the cover 402, the rail under the cover 502, the gap 504, the inner gate guide ribs 506, the upper pre-alignment guide 710, the gate cover cavity 708, and the V-guide 706. The self-aligning elements shown in Figure 21 create an overlapping, interlocking, or meshed structure that leaves minimal or no gaps when the gate 304 is moved to a closed position. Accordingly, the illustrated self-aligning elements prevent the gate 304 from closing if at least a portion of the IV tubing 301 is misaligned. Figures 22 through 24 are diagrams of different modalities of at least some of the self-alignment characteristics described in relation to Figures 4 through 7 above for lateral cutting lines (3) and (4), according to an exemplary modality of the present description. QQQQ Ln / Lznz / E / YILI shows a diagram of an upper end 320 of the infusion pump 300 with the gate 304 transparent to expose the self-adjusting elements including the cover 402, the cover rails 403, the rail 502, the rib 506 and the gap 504. Figure 23 shows a cross-section of the infusion pump 300 along the side cut line (3) of Figure 22. The illustration includes a diagram of the inner gate portion 1800 of gate 304, including the plunger 1801, as shown in Figure 18. In this illustrated example, the guide ribs of the inner gate 506 are configured to engage, interlock, contact, or otherwise mesh with the reliefs 1802 of the inner portion 1801 of gate 304. The U-shaped cutout of the ribs 506 is configured to cause the IV tubing 301 to self-align in the tubing channel 404. When gate 304 is in the closed position, the plunger 1801 is configured to retain the IV tubing 301 within the tubing channel. 404. The minimum separation between the self-aligning elements prevents gate 304 from closing if tube IV 301 is misaligned.Figure 23 also shows sections of the outer gate 2002 and the inner gate 2004. Figure 24 shows a cross-section of the infusion pump 300 along the side cut line (4) of Figure 22. In the illustrated example, the guide ribs of the inner gate 506 are shown near relief 1802 of the inner portion 1801 of gate 304. The figure shows the minimum clearance between the self-aligning elements, which prevents gate 304 from closing if IV tubing 301 is misaligned. Figure 24 also shows sections of the outer gate 2002 and the inner gate 2004. Types of interlacing ribs Figures 25 through 29 show diagrams of the self-aligning interlocking rib features of the infusion pump 300 of Figure 3, according to illustrative embodiments of the present description. Figures 25 and 26 are diagrams showing that the gate 304 includes an interlocking rib assembly 2502 and the housing 312 of the infusion pump 300 includes interlocking ribs 2504. The gate 304 also includes the plunger 712 and the upper pre-alignment guide 710. The ribs 2502 of the gate 304 may be similar to the guide 704 in Figure 7, where the ribs 2502 are spaced so that the ribs 2502 on one side are separated by the channel of tube 404 from the ribs on the other side. Although the illustrated embodiment shows three ribs, it should be noted that other embodiments may include fewer ribs or additional ribs. The thickness and shape of the ribs correspond to the spacing between the ribs 2504 so that the ribs 2504 must fit within minimal spaces between the ribs 2502. Furthermore, the spacing between the ribs 2504 is configured to accommodate the ribs 2502. The exemplary ribs 2502, 2504, and guide 710 are configured to overlap or interlock when gate 304 moves to a closed position. Figures 27–29 are diagrams of gate 304 in the closed position with ribs 2502, 2504, and guide 710 overlapping or interlocking. As illustrated, there is minimal or no clearance for IV tube 301 to bend or otherwise become misaligned. Any misalignment of IV tube 301 prevents the ribs of gate 2502, 2504, and guide 710 from interlocking and thus prevents gate 304 from closing. Figure 29 further shows that hinge 314 may include ribs 2502 and 2504 to prevent IV tube 301 from crimping where gate 304 comes into contact with housing 312. Alternative self-alignment feature modalities Figures 30 through 40 are diagrams showing alternative embodiments of the plunger 712, tube channel 404, cover 402, and cover rails 403, according to illustrative embodiments of the present description. Figures 30 and 31 show diagrams of an embodiment where the plunger 712 is narrower and integrated into the gate 304. In some embodiments, the components shown in Figure 31 may be separate parts that fit / press into the external gate cavity with a correspondingly matched shape. In addition, the cover rails 403 are angled slightly inward toward the tube channel 404 to compensate for the reduced width of the plunger 712. The inward angle of the cover rails 403 helps retain the IV tube 301 in place. Additionally, when gate 304 is closed, plunger 712 is sized to fit between the deck rails 403 and further retain IV tube 304 in place. Figures 32 and 33 are diagrams of an embodiment where plunger 712 is wider and integrated into gate 304. Additionally, the deck rails 403 are angled slightly outward from the tube channel 404 to compensate for the increased width of plunger 712. This outward angle of the deck rails 403 helps accommodate the wider plunger 712. When gate 304 is closed, plunger 712 is sized to fit between the deck rails 403 and retain IV tube 304 in place. Figures 34 and 35 are diagrams of a modality where the plunger 712 is also wider and integrated into the gate 304. In addition, the deck rails 403 have straight sides. When the gate 304 is closed, the plunger 712 is sized to fit between the deck rails 403 and retain the IV tube 304 in place. An internal surface of the plunger 712 may have a surface curvature that matches a surface curvature of an IV tube to allow the plunger 712 to partially surround the IV tube to apply force against the IV tube without causing occlusion. Figure 36 is a diagram of an embodiment in which the plunger 712 is formed as an integral piece configured to surround at least 1 / 3 to 1 / 2 (e.g., a top side) of the IV tube 301. The plunger 712 includes a skewed side 3602 configured to push the IV tube 301 in an x-direction (along a horizontal plane) to position it within the channel of the tube 404. The deck rail 403b has a lower height to accommodate the skewed side 3602 compared to the height of the deck rail 403a. As illustrated, the deck rail 403a contacts an unskewed side 3604 of the plunger 712 to enclose and retain the IV tube 301. Figures 37 through 40 are diagrams of a configuration where the deck rails 403a and 403b have raised sides configured to prevent incorrect loading of the IV tube 301. Additionally, the infusion pump 300 includes a clamp 3702 located under the deck 402 within the gap 504. QQQQ Ln / Lznz / E / YILI The 3702 clamp is sized to form a conduit or channel for the tubing to accommodate the IV 301 tubing. In addition, the ends of the 3702 clamp are angled inward to retain the IV 301 tubing in place. Figure 38 shows the deck rails 403 and the clamp 3702 that retains the IV tube 301. To insert the tube 301, an operator first places a first portion of the tube 301 into the deck rails 403. The curvature of a side surface of the decks 402a and 402b guides the tube 301 into the channel of the tube 404 between the deck rails 403 to facilitate alignment and placement. An operator then inserts an adjacent portion of the IV tube 301 into the clamp 3702, which retains the IV tube. In some cases, an operator may be able to insert the first and second portions of the IV tube 301 at approximately the same time to easily secure the IV tube in place. In addition, the clamp 3702, the deck rails 403, and the curvature of the side surface of the decks 402 provide automatic alignment and retention of the IV tube 301 when the gate 304 is moved to a closed position. Figure 39 is a diagram of gate 304, which includes self-aligning features 704, 706, 708, 710, and 712 that operate with deck rails 403, decks 402a and 402b, and clamp 3702 to retain IV tube 301. The plunger example 712 is configured to engage and / or partially enclose IV tube at a location downstream of deck rails 403 and aligns with clamp 3702. At least a portion of plunger 3702 is configured to fit within the ends of clamp 3702, thereby securing IV tube 301 in place. Figure 40 is a diagram of gate 304 in the closed position with IV tube 301 secured in place and in proper alignment to allow fluid to pass through for infusion therapy. Conclusion It should be understood that various changes and modifications to the exemplary forms described herein will be evident to those skilled in the art. Such changes and modifications may be made without departing from the spirit and scope of this material and without diminishing its intended advantages. Therefore, it is intended that such changes and modifications be covered by the appended claims. Furthermore, in accordance with current United States law, it should be noted that paragraph 6 of 35 U.S.C. 112(f) or paragraph 6 of 35 U.S.C. 112 prior to the AIA is not intended to be invoked unless the terms “means” or “stage” are explicitly mentioned in the claims. Accordingly, the claims are not intended to be limited to the corresponding structure, material, or actions described in the specification or its equivalent.

Claims

1. An infusion pump apparatus for the administration of an intravenous (“IV”) fluid, wherein the apparatus comprises: a housing including a drive area configured to engage a first portion of an IV tubing in a vertical orientation when the infusion pump is positioned for operation, the drive area including an upper end for receiving the IV tubing from a fluid container and a lower end for delivering the IV tubing to a patient, a tubing channel located at the upper end of the drive area, the tubing channel having a surface curvature and width configured to accept a lower side of a second portion of the IV tubing, at least a portion of the tubing channel having a radial curvature for bending the second portion of the IV tubing from a horizontal orientation to a vertical orientation when the infusion pump is positioned for operation,two parallel deck rails provided on each side of the tube channel, the deck rails having widths extending outwards from the tube channel, a cover having a first side and a second side separated by the deck rails, the first and second sides connected to the deck rails, deck rails positioned adjacent to the respective deck rails and located on each side of the tube channel, and guide ribs positioned at a distance from the respective deck rails and located on each side of the tube channel to retain the second part of tube IV, where gaps are formed between the deck rails and the guide ribs; and a gate connected to the housing and configured to enclose the drive area, the tube channel, the deck rails, the bottom rails, the guide ribs, and the housing cover,The gate includes a cavity having dimensions sized to receive the deck rails and the deck when the gate is in a closed position. The cavity is defined by at least one lower prealignment guide configured to contact or be adjacent to a lower surface of the deck. The lower prealignment guide includes cutouts configured to receive the lower rails, and a guide section configured to be received in the gaps formed between the lower rails and the guide ribs, wherein a lower surface of the lower prealignment guide is positioned to contact or be adjacent to the guide ribs.wherein the cover and cover rails are configured to engage the cavity and the guide section of the lower pre-alignment guide is configured to engage the gaps formed between the lower rails and the guide ribs to prevent the gate from closing if the second part of the IV tube is not positioned between the cover rails and the guide ribs.

2. The apparatus according to claim 1, wherein each of the cover rails includes a retaining knob configured to retain the second part of tube IV within the channel of the QQQQ Ln / įZРZ� / B / YILI tube.

3. The apparatus according to claim 1 or 2, wherein the first side of the cover includes a cutout located at an end opposite one end that is connected to the respective cover rail, the cutout reducing the width of the first side of the cover at the location of the cutout, wherein the first side of the cover and the cutout cooperate to cause a second misaligned portion of tube IV to move further away from the tube channel to exaggerate the misalignment.

4. The apparatus according to claim 3, wherein the cavity includes a tab that is positioned and arranged to fit within the cutout on the first side of the cover.

5. The apparatus according to claim 1 or 3, wherein the gate cavity is defined at least by: an upper pre-alignment guide configured to contact or be adjacent to an upper cover surface.

6. The apparatus according to claim 5, wherein the upper pre-alignment guide includes channels configured to engage or receive the respective deck rails.

7. The apparatus according to claim 1, wherein the guide section has at least one of a U-shape or a V-shape.

8. The apparatus according to claim 1, wherein the lower rails, gaps, and guide ribs are configured to interlock or overlap with the lower pre-alignment guide to prevent the gate from closing if the second part of tube IV is not positioned along the tube channel.

9. The apparatus according to claim 1 or 8, wherein the gate further includes a plunger aligned with or located adjacent to the tube channel when the gate is in the closed position, the plunger having a surface curvature and a width dimensioned to accept an upper side of the second part of the IV tube, at least a portion of the plunger having a radial curvature to bend the IV tube from the horizontal orientation to the vertical orientation when the infusion pump is positioned for operation, wherein the width of the plunger allows the plunger to fit between parallel cover rails when the gate is in the closed position.

10. The apparatus according to claim 9, wherein the housing further includes a closing section located along at least the upper side of the housing, wherein the closing section includes: at least one rib positioned along the upper side of the housing, the at least one rib extending vertically from the upper side and defining a tube viewer having a width size to permit the second part of the IV tubing to pass between the edges of the tube viewer; and a ribbed tube channel aligned with the tube viewer, the ribbed tube channel having a horizontal orientation when the infusion pump is positioned for operation, the ribbed tube channel being located adjacent to the tube channel and configured to contact the lower side of the second part of the IV tubing.

11. The apparatus according to claim 10, wherein the piston in connection with the tube channel and the grooved tube channel encloses or surrounds the lower and upper sides of the second part of tube IV and provides bending of the second part of tube IV from the horizontal orientation to the vertical orientation.

12. The apparatus according to claims 1, 9, 10 or 11, wherein the housing further includes a clamp at one end of the tube channel configured to receive the second part of tube IV.

13. An infusion pump apparatus for administering an intravenous (“IV”) fluid, wherein the apparatus comprises: a housing including a drive area configured to engage a first portion of an IV tubing in a vertical orientation when the infusion pump is positioned for operation, the drive area including an upper end for receiving the IV tubing from a fluid container and a lower end for delivering the IV tubing to a patient, a tubing channel in the housing located at the upper end of the drive area, the tubing channel having a surface curvature and a width dimensioned to accept a lower side of a second portion of the IV tubing, at least a portion of the tubing channel having a radial curvature to bend the second portion of the IV tubing from a horizontal orientation to a vertical orientation when the infusion pump is positioned for operation,a first set of housing ribs located on a first side of the housing tube channel and a second set of housing ribs located on a second opposite side of the housing tube channel; and a gate connected to the housing and configured to enclose the drive area, the housing tube channel and the housing ribs, the gate including a gate tube channel configured to align with the housing tube channel when the gate is in a closed position, and a first set of gate ribs located on a first side of the gate tube channel and a second set of gate ribs located on a second side of the gate tube channel,wherein the first and second sets of housing ribs are configured to interlock or overlap with the first and second sets of gate ribs when the gate is in the closed position.

14. The apparatus according to claim 13, wherein each of the first and second housing rib sets includes at least three parallel ribs and each of the first and second gate rib sets includes at least two parallel ribs.

15. The apparatus according to claim 13 or 14, wherein the housing tube channel, the gate tube channel, the first and second housing rib assemblies, and the first and second gate rib assemblies include at least one made of plastic, rubber, or combinations thereof.

16. The apparatus according to claim 13 or 15, wherein the gate further includes an upper pre-alignment guide configured to contact or be adjacent to an upper rib of the first and second housing rib sets.

17. The apparatus according to claim 13 or 15, wherein the gate tube channel includes a plunger having a surface curvature and a width dimensioned to accept an upper side of the second part of the IV tube, at least a portion of the plunger having a radial curvature to bend the IV tube from the horizontal orientation to the vertical orientation when the infusion pump is positioned for operation.

18. The apparatus according to claim 13 or 16, wherein the gate further includes an upper end configured to cover the upper end of the drive area, and wherein the gate tube channel, the first set of gate ribs, and the second set of gate ribs are located at the upper end of the gate.

Images