Liquid transfer pump, adapter, and liquid transfer set with adapter

Abstract

This liquid feeding pump feeds a liquid which is in a liquid feed pipe, and comprises: an attachment part to which a first clip member attached to the liquid feed pipe can be attached; an adapter which can be detachably attached to the attachment part; and a detecting unit which detects the attachment of the first clip member to the attachment part. The adapter has a shape such that the first clip member cannot be attached to the adapter, but a second clip member having a shape different from that of the first clip member can be attached to the adapter.

Description

[Technical Field]

[0001] The present invention relates to a liquid feed pump, an adapter, and a liquid feed set. [Background technology]

[0002] Known infusion pumps for use in infusion include those disclosed in Patent Document 1. The infusion pump described in Patent Document 1 is typically used exclusively for infusions, and is not used to deliver nutritional supplements, in order to prevent the wrong attachment of a nutrition tube for delivering nutritional supplements and an infusion tube for delivering infusion agents. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-212112 Summary of the Invention [Problem to be solved by the invention]

[0004] The fact that the infusion pump described in Patent Document 1 can be used to deliver nutritional supplements brings the advantage that there is no need to purchase a separate infusion pump for delivering nutritional supplements in addition to the infusion pump for delivering infusion solutions.

[0005] An object of the present invention is to provide a liquid-feed pump that allows for the delivery of different types of liquids while preventing incorrect attachment of tubes for delivering different types of liquids. Another object of the present invention is to provide an adapter that enables the delivery of different types of liquids to the liquid-feed pump. A further object of the present invention is to provide a liquid-feed set that can be attached to the liquid-feed pump only via the adapter. [Means for solving the problem]

[0006] According to a first aspect of the present invention, there is provided a liquid feed pump for feeding a liquid in a liquid feed tube. The liquid feed pump includes an attachment portion to which a first clip member attached to the liquid feed tube can be attached, an adapter detachably attachable to the attachment portion, and a detection portion for detecting attachment of the first clip member to the attachment portion. The adapter has a shape that prevents the detection portion from detecting attachment of the first clip member and enables the detection portion to detect attachment of a second clip member having a different shape from the first clip member.

[0007] According to a preferred embodiment of the liquid transfer pump of the present invention, the adapter defines an insertion space formed to prevent insertion of the first clip member and to allow insertion of the second clip member.

[0008] According to a preferred embodiment of the fluid delivery pump of the present invention, the adapter has a cover member that partitions the insertion space, and a detection auxiliary member that is detected by the detection unit by being pressed, moved, or deformed by the second clip member inserted into the insertion space.

[0009] According to a preferred embodiment of the infusion pump of the present invention, the first clip member is attached to an infusion tube for delivering an infusion agent.

[0010] According to a preferred embodiment of the infusion pump of the present invention, the second clip member is attached to a nutrition tube for delivering a nutrient solution.

[0011] According to a preferred embodiment of the liquid feed pump of the present invention, the liquid feed pump includes a main body that controls the feeding of the liquid, and a door that is pivotally connected to the main body and that sandwiches the liquid feed tube together with the main body. When the first clip member is attached to the attachment portion with the door open relative to the main body, the liquid feed tube to which the first clip member is attached is closed.

[0012] According to a preferred embodiment of the liquid delivery pump of the present invention, after the first clip member is attached to the attachment portion, the door portion is closed relative to the main body portion, and the liquid delivery tube is clamped between the main body portion and the door portion, and the blockage of the liquid delivery tube is released.

[0013] According to a second aspect of the present invention, there is provided an adapter for use in a liquid feed pump, the adapter comprising an attachment section to which a first clip member attached to a liquid feed tube can be attached, and a detection section for detecting attachment of the first clip member to the attachment section. The adapter has a shape that prevents the detection section from detecting attachment of the first clip member and enables the detection section to detect attachment of a second clip member having a different shape from the first clip member, and is configured to be detachably attached to the attachment section.

[0014] A preferred embodiment of the adapter of the present invention defines an insertion space that is configured to prevent insertion of the first clip member and allow insertion of the second clip member.

[0015] A preferred embodiment of the liquid delivery pump of the present invention comprises a cover member that partitions the insertion space, and a detection auxiliary member that is detected by the detection unit by being pressed and moved or deformed by the second clip member inserted into the insertion space.

[0016] According to a third aspect of the present invention, there is provided a liquid-feeding set for use with a liquid-feeding pump. The liquid-feeding set includes a liquid-feeding tube and a clip member attached to the liquid-feeding tube. The clip member has a shape that prevents it from being attached to a mounting portion of the liquid-feeding pump, and can only be attached to the liquid-feeding pump via an adapter attached to the mounting portion. [Effects of the Invention]

[0017] According to the present invention, it is possible to provide a liquid-feed pump that allows the delivery of different types of liquids while preventing incorrect attachment of tubes for delivering different types of liquids. Also, according to the present invention, it is possible to provide an adapter that allows the liquid-feed pump to deliver different types of liquids. Furthermore, according to the present invention, it is possible to provide a liquid-feed set that can be attached to the liquid-feed pump only via the above-mentioned adapter. [Brief explanation of the drawings]

[0018] [Figure 1] 1 illustrates a front view of a liquid feed pump according to an embodiment of the present application. [Figure 2A] 2 shows a cross-sectional perspective view of the liquid feed pump taken along line AA′ in FIG. 1, and a first clip member before being attached to the attachment portion of the liquid feed pump shown in FIG. 1. [Figure 2B] This shows the state after the first clip member has been completely attached to the attachment portion of the liquid feed pump, following the state shown in FIG. 2A. [Figure 3] 1 illustrates an adapter according to an embodiment of the present application and a second clip member that can be attached to the adapter. [Figure 4A] 4 is a cross-sectional perspective view of the liquid feed pump taken along line AA' in FIG. 1 with only the cover member of the adapter shown in FIG. 3 attached, and shows the second clip member before being attached to the adapter. [Figure 4B] This shows a cross-sectional oblique view of the liquid delivery pump along line AA' in Figure 1 with both the cover member and the detection auxiliary member that make up the adapter shown in Figure 3 attached, and the second clip member before being attached to the adapter. [Figure 4C] This shows a state in which the second clip member has been completely attached to the adapter attached to the attachment portion of the liquid feed pump, following the state shown in FIG. 4B. [Figure 5A] 4 shows a cross-sectional perspective view of the liquid feed pump taken along line AA' in FIG. 1 in a state in which both the cover member and the detection auxiliary member that constitute the adapter shown in FIG. 3 are attached, and a first clip member. [Figure 5B] In the state shown in FIG. 5A, the first clip member cannot be attached to the adapter. [Figure 6] 1 is a plan view of a mounting portion and a detection mechanism of a liquid feed pump according to an embodiment of the present application. [Figure 7] 3 shows a cross-sectional perspective view of the liquid feed pump taken along line AA' in FIG. 1 with only the cover member of the adapter attached, and a second clip member inserted into the insertion space of the cover member. [Figure 8A] 2B illustrates one form of the first clip member shown in FIG. 2A. [Figure 8B] 2B illustrates another embodiment of the first clip member shown in FIG. 2A. DETAILED DESCRIPTION OF THE INVENTION

[0019] FIG. 1 shows a front view of a liquid feed pump 100 according to an embodiment of the present application. FIG. 2 shows a cross-sectional perspective view of the liquid feed pump 100 taken along line AA' in FIG. 1 and a first clip member 40. FIG. 3 shows an adapter 10 and a second clip member 50 according to an embodiment of the present application. FIG. 4 shows a cross-sectional perspective view of the liquid feed pump 100 taken along line AA' in FIG. 1 with the adapter 10 attached and the second clip member 50. FIG. 5 shows a cross-sectional perspective view of the liquid feed pump 100 taken along line AA' in FIG. 1 with the adapter 10 attached and the first clip member 40.

[0020] The liquid feed pump 100 is composed of a main body 120 and a door 110. The door 110 is attached to the main body 120 so that it can be opened and closed. In the liquid feed pump 100 shown in FIG. 1, the door 110 is open to the main body 120. Therefore, FIG. 1 shows the front of the main body 120 and the back of the door 110. Hereinafter, the state in which the door 110 is open to the main body 120 may be simply referred to as the "open state." Furthermore, the state in which the door 110 is closed to the main body 120 may be simply referred to as the "closed state."

[0021] The liquid feed pump 100 can be installed with liquid feed tubes 55, 46 that can feed different types of liquid, such as an infusion agent and a nutrient. The liquid feed pump 100 can press the installed liquid feed tubes 55, 46 to feed the liquid in the liquid feed tubes 55, 46. As will be described in detail later, in the liquid feed pump 100 of this embodiment, the door unit 110 is opened and the liquid feed tubes 55, 46 are disposed at predetermined positions in the main body 120, and then the door unit 110 is closed, thereby completing the installation of the liquid feed tubes 55, 46 in the liquid feed pump 100. An infusion bag containing a liquid, such as a predetermined medicinal solution, is connected to the upstream side of the liquid feed tubes 55, 46 (upper side in FIGS. 2A , 4A , 4B , and 5A ) of the flow path of the liquid feed tubes 55, 46 relative to the portion of the liquid feed tubes 55, 46 that is installed in the liquid feed pump 100. Furthermore, for example, a clamp member and an indwelling catheter are connected to the downstream side of the flow path of the liquid feed tubes 55, 46 (the lower side in Figures 2A, 4A, 4B, and 5A) of the portion of the liquid feed tubes 55, 46 that is installed in the liquid feed pump 100. The indwelling catheter is left in a state of being inserted into a vein or the like of the patient. By using the liquid feed pump 100, the flow rate per unit time (liquid feed rate) of the liquid in the liquid feed tubes 55, 46 can be controlled. Therefore, the amount of liquid in the infusion bag administered to the patient per unit time can be controlled by the liquid feed pump 100.

[0022] As shown in FIG. 1, the main body 120 includes an air bubble detection sensor unit 1, a pressing unit 2, a pipe position determining unit 4, an occlusion sensor unit 5, and an attachment unit .

[0023] The air bubble detection sensor unit 1 is composed of an ultrasonic transmitter 8 and an ultrasonic receiver 9. When the door 110 is closed, the air bubble detection sensor unit 1 detects the presence or absence of air bubbles in the liquid feed pipes 55, 46. More specifically, the liquid feed pipes 55, 46 are arranged between the ultrasonic transmitter 8 and the ultrasonic receiver 9, and the ultrasonic transmitter 8 transmits a predetermined signal such as an ultrasonic wave to the ultrasonic receiver 9. If the strength of the received ultrasonic signal is strong, it is determined that no air bubbles are detected, and if the strength of the received ultrasonic signal is weak, it is determined that an air bubble is detected.

[0024] The pressing unit 2 includes a plurality of fingers 3. The fingers 3 are arranged from the upstream side of the liquid supply tubes 55, 46 toward the downstream side of the liquid supply tubes 55, 46. Each of the fingers 3 can be reciprocated by a driving unit in a direction facing the receiving portion 104 of the door unit 110 (described later). When driven by the driving unit, the fingers 3 sequentially press and close the liquid supply tubes 55, 46 from the upstream side toward the downstream side of the liquid supply tubes 55, 46. This allows the liquid supply tubes 55, 46 to perform peristaltic motion. While the pressing unit 2 of this embodiment includes eight fingers 3, the number of fingers is not limited to eight as in this embodiment and may be less than eight or nine or more. Furthermore, in the pressing unit 2 of this embodiment, the fingers 3 form a contact body that contacts the liquid supply tubes 55, 46. However, the pressing unit 2 may also have the configuration of a contact body used in a so-called "roller pump," which squeezes the liquid supply tubes 55, 46 using rollers that revolve around a predetermined rotation axis and rotate on their own axis.

[0025] When the liquid supply pipes 55, 46 are attached to the front surface of the main body 120, the pipe position determining unit 4 determines the positions of the liquid supply pipes 55, 46 in a direction perpendicular to the central axis direction.

[0026] The occlusion sensor unit 5 is composed of a permanent magnet and a pickup for analog detection of the amount of movement of the permanent magnet. The occlusion sensor unit 5 detects the occlusion of the liquid supply pipes 55, 46 by detecting the amount of movement of the permanent magnet in response to a change in internal pressure that accompanies the occlusion of the liquid supply pipes 55, 46, for example.

[0027] As shown in FIG. 1, the main body 120 may further include a handle 6 for a user to hold when carrying the liquid feed pump 100.

[0028] As shown in Figures 2A and 2B, the mounting portion 7 is configured to be able to mount the first clip member 40 attached to an infusion tube serving as a fluid delivery tube 46 used to deliver an infusion agent. That is, the mounting portion 7 has a shape that fits the first clip member 40. More specifically, the mounting portion 7 is configured so that the attachment of the first clip member 40 can be detected by a detection unit 62, which will be described later. For ease of explanation, the fluid delivery tube 46 is omitted from Figure 2B. This will be described in detail later.

[0029] As shown in FIGS. 4A, 4B, 4C, 5A, and 5B, an adapter 10 can be attached to the mounting portion 7. A second clip member 50 can be attached to the adapter 10 attached to the mounting portion 7, which serves as a nutrient tube serving as a liquid delivery tube 55 used to deliver a nutrient solution. More specifically, the adapter 10 is configured such that, when attached to the mounting portion 7, the attachment of the second clip member 50 can be detected by a detection unit 62 (described later). The adapter 10 is also configured to allow the second clip member 50 to be attached to the liquid delivery pump 100 but not allow the first clip member 40 to be attached to the liquid delivery pump 100. The adapter 10 has a shape that allows it to be attached to the mounting portion 7 and is detachably attached to the mounting portion 7. Therefore, when attaching the first clip member 40, the adapter 10 is removed from the mounting portion 7, and when attaching the second clip member 50, the adapter 10 is attached to the mounting portion 7. As will be described later, in this embodiment, the adapter 10 is composed of a cover member 20 and a detection auxiliary member 30. However, other types of adapters may also be used.

[0030] 1, the door unit 110 includes a door housing 103. This door housing 103 is pivotally attached to the housing 12 of the main body unit 120 via a hinge unit 101. In this manner, the door unit 110 of this embodiment is configured to be able to be opened and closed freely relative to the main body unit 120.

[0031] Door seal rubber 106 made of elastomer is disposed on the rear side of door 110 to prevent the liquid medicine from entering inside main body 120 when door 110 is closed.

[0032] Furthermore, a position maintaining unit 102 is disposed on the rear side of the door unit 110. When the door unit 110 is closed relative to the main body unit 120, the position maintaining unit 102 abuts against the liquid supply tubes 55, 46, thereby positioning the liquid supply tubes 55, 46.

[0033] A receiving portion 104 is disposed on the rear side of the door portion 110. The receiving portion 104 sandwiches the liquid supply tubes 55, 46 together with the pressing portion 2. The receiving portion 104 is disposed opposite the pressing portion 2. The pressing portion 2 can press the liquid supply tubes 55, 46 sandwiched between the receiving portion 104 and the pressing portion 2 toward the receiving portion 104.

[0034] Next, a configuration for detecting the attachment of the first clip member 40 and the second clip member 50 in the infusion pump 100 will be described. As shown in FIG. 2A, the first clip member 40 is attached to an infusion tube (hereinafter referred to as "infusion tube 46") serving as an infusion tube for delivering an infusion agent. As shown in FIG. 2B, the first clip member 40 is configured to be insertable into an insertion hole in the attachment portion 7. A detection mechanism 60 is provided inside the main body 120 from the attachment portion 7 of the infusion pump 100. In this embodiment, the detection mechanism 60 includes a semi-cylindrical rotating portion 61 and a detection portion 62, but other types of detection mechanisms may also be used. The illustrated infusion tube 46 and first clip member 40 constitute an infusion set.

[0035] 2B, when the first clip member 40 is attached to the attachment portion 7, the protruding tip 41 of the first clip member 40 collides with the radially shaped rotating portion 61 of the detection mechanism 60. This collision causes the semi-cylindrical rotating portion 61 to rotate around a central axis located approximately in the center of the semi-circular bottom surface. As the rotating portion 61 rotates, the position of the recess formed on the arc-shaped curved side surface of the rotating portion 61 coincides with the position of the detecting portion 62. As a result, the detecting portion 62 of the detection mechanism 60 detects the first clip member 40. This allows the liquid feed pump 100 to detect that the first clip member 40 has been attached to the attachment portion 7.

[0036] 3 shows the adapter 10 that can be attached to the attachment portion 7 of the liquid feed pump 100, and the second clip member 50 that can be attached to the attachment portion 7 via the adapter 10. In this embodiment, the adapter 10 is made up of a cover member 20 and a detection auxiliary member 30. However, the form of the adapter 10 is not limited to this embodiment.

[0037] The cover member 20 includes a first portion 21, a second portion 25, an upstream pipe fixing portion 23, and a downstream pipe fixing portion 22. Hereinafter, for ease of explanation, when viewed from the front of the main body portion 120 with the cover member 20 attached to the attachment portion 7, the first portion 21 located on the left side of an insertion space 24 (described later) will be referred to as the "left portion 21," and the second portion 25 located on the right side of the insertion space 24 will be referred to as the "right portion 25." The left portion 21, the right portion 25, the upstream pipe fixing portion 23, and the downstream pipe fixing portion 22 define the insertion space 24 into which the second clip member 50 can be inserted but the first clip member 40 cannot be inserted. The upstream pipe fixing portion 23 and the downstream pipe fixing portion 22 include recesses for fixing a nutrient tube (hereinafter referred to as the "nutrient tube 55") serving as a liquid delivery tube 55 to which the second clip member 50 is attached. In the cover member 20 of this embodiment, the recess of the upstream pipe fixing portion 23 and the recess of the downstream pipe fixing portion 22 are aligned so that the nutrient tube 55 extends substantially vertically when attached to the attachment portion 7 of the liquid feed pump 100. In addition, the cover member 20 can be fixed to the main body portion 120 by fixing the left side surface of the left portion 21 and the right side surface of the right portion 25 near the entrance of the insertion hole of the attachment portion 7.

[0038] The detection auxiliary member 30 has a tip portion 31, an elastic portion 32, and a member body portion 33. The tip portion 31 protrudes from the tip surface of the member body portion 33. The elastic portion 32 is disposed adjacent to the tip portion 31, extends from the tip surface of the member body portion 33 in the same direction as the protrusion of the tip portion 31, and is configured to be elastically deformable in this direction. The elastic portion 32 is formed, for example, by a coil spring. The elastic portion 32 is attached to the mounting portion 7 of the liquid feed pump 100 so as to be sandwiched between the tip surface of the member body portion 33 and a reaction wall portion 63 of the main body portion 120 of the liquid feed pump 100 (see FIG. 4B ). The detection auxiliary member 30 enables the detection portion 62 of the detection mechanism 60 to detect the second clip member 50. More specifically, the adapter 10 is attached to the mounting portion 7 in the order of the detection auxiliary member 30 and the cover member 20, and the second clip member 50 is inserted into the insertion space 24 defined by the cover member 20. This causes the member main body 33 of the detection auxiliary member 30 to be pressed by the second clip member 50. As a result, the elastic portion 32 is compressed and deformed between the member main body 33 and the reaction wall portion 63, and the tip portion 31 protruding from the member main body 33 moves toward the detection portion 62 through an opening adjacent to the reaction wall portion 63 and extending toward the detection portion 62, and collides with the rotating portion 61 of the detection mechanism 60 provided at the back of the insertion hole of the mounting portion 7. The collision of the tip portion 31 with the rotating portion 61 causes the rotating portion 61 to rotate, and the position of the recess formed in the arc-shaped curved side surface of the rotating portion 61 coincides with the position of the detection portion 62. This allows the detection portion 62 to detect the second clip member 50. In this manner, in this embodiment, the detection auxiliary member 30 moves when pressed by the second clip member 50, thereby realizing detection of the second clip member 50.

[0039] The second clip member 50 has a rear end portion 51, a clip body portion 52, and a hook 53. The clip body portion 52 is provided with an opening 54 for passing a nutrition tube 55 therethrough. The hook 53 is configured to engage with the cover member 20 attached to the attachment portion 7.

[0040] 4A shows a cross-sectional perspective view of the infusion pump 100 along line AA' in FIG. 1 with only the cover member 20 of the adapter 10 attached to the attachment portion 7, and the second clip member 50 attached to a nutrition tube 55 that delivers a nutrient solution. Normally, the detection assisting member 30 is attached to the attachment portion 7 before the cover member 20 is attached, but for ease of explanation, FIG. 4A shows a state in which only the cover member 20 is attached. The second clip member 50 is attached to the illustrated nutrition tube 55 in advance, and together with the nutrition tube 55, it constitutes an infusion set.

[0041] 4B shows a cross-sectional perspective view of the liquid feed pump 100 taken along line AA' in FIG. 1 with both the cover member 20 of the adapter 10 and the detection auxiliary member 30 attached to the attachment portion 7. As shown in FIG. 4B, the elastic member 32 is placed in the insertion hole of the attachment portion 7, sandwiched between the member main body 33 and the reaction wall 63 of the main body 120. The elastic force of the elastic member 32 prevents the detection auxiliary member 30 from moving further inward. Therefore, the tip portion 31 will not reach the rotating member 61 of the detection mechanism 60 and will not come into contact with the rotating member 61 unless the member main body 33 is pressed toward the rotating member 61 against the elastic force of the elastic member 32.

[0042] FIG. 4C shows the second clip member 50 inserted into the insertion space 24 of the cover member 20 and pressing against the detection auxiliary member 30. FIG. 6 shows a plan view of the attachment unit 7 and the detection mechanism 60 of the liquid feed pump 100. As shown in FIGS. 4C and 6, the detection auxiliary member 30 is pressed by the second clip member 50 and is detected by the detection unit 62. Specifically, the member main body 33 of the detection auxiliary member 30 is pressed by the clip main body 52 of the second clip member 50. As a result, the member main body 33 moves toward the reaction wall 63 against the elastic force of the elastic member 32. Therefore, the tip 31 disposed adjacent to the elastic member 32 moves toward the rotating member 61 of the detection mechanism 60 through the opening adjacent to the reaction wall 63 and presses against the rotating member 61. The rotating portion 61 rotates when pressed by the tip portion 31, and the recess of the rotating portion 61 moves to the position of the detecting portion 62. As a result, the detecting portion 62 detects that the second clip member 50 has been attached to the attachment portion 7 via the adapter 10. In this way, the infusion pump 100 to which the adapter 10 is attached can detect the attachment of the second clip member 50. In response to the detection mechanism 60 recognizing the second clip member 50, the infusion pump 100 can perform infusion operation in response to a user request. In this way, in this embodiment, the detection auxiliary member 30 moves when pressed by the second clip member 50, thereby realizing detection of the second clip member 50. This enables the infusion pump 100 to deliver a nutrient solution.

[0043] 5A shows a cross-sectional perspective view of the infusion pump 100 taken along line AA' in FIG. 1, with both the cover member 20 and the detection auxiliary member 30 of the adapter 10 attached to the attachment portion 7, and the first clip member 40 attached to the infusion tube 46. The first clip member 40 is attached to the infusion tube 46 shown in the figure in advance, and together with the infusion tube 46, constitutes an infusion set.

[0044] FIG. 5B shows a case where the first clip member 40 is to be attached to the attachment portion 7 of the liquid feed pump 100 with both the cover member 20 and the detection auxiliary member 30 attached. The detection auxiliary member 30 does not come into contact with the first clip member 40 and is not pressed by the first clip member 40, and therefore is not detected by the detector 62. Specifically, the insertion space 24 defined by the cover member 20 is defined so as to prevent the insertion of the first clip member 40. Therefore, the first clip member 40 cannot be inserted into the insertion space 24. Therefore, the first clip member 40 does not come into contact with the detection auxiliary member 30 located at the back of the insertion space 24 and cannot press against the detection auxiliary member 30. Therefore, the detection auxiliary member 30 does not move against the elastic force of the elastic portion 32 and does not move into the main body portion 120. Therefore, the rotating portion 61 is not pressed by the tip portion 31. Therefore, the detection unit 62 of the detection mechanism 60 cannot detect that the first clip member 40 has been attached to the liquid feed pump 100. In this manner, in this embodiment, the cover member 20 of the adapter 10 prevents the first clip member 40 from being inserted, thereby making it impossible for the first clip member 40 to be attached to the attachment portion 7.

[0045] As described above, the insertion space 24 of the cover member 20 is partitioned to allow the insertion of the second clip member 50 but not the insertion of the first clip member 40. Therefore, when the cover member 20 is attached to the attachment portion 7, the first clip member 40 cannot be attached to the attachment portion 7. This prevents the infusion tube 46 from being mistakenly attached when attempting to attach the nutrition tube 55 to the liquid delivery pump 100.

[0046] 7 shows a cross-sectional perspective view of the liquid feed pump 100 taken along line AA' in FIG. 1 with only the cover member 20 of the adapter 10 attached to the attachment portion 7. FIG. 7 shows a state in which the detection auxiliary member 30 is not disposed in the insertion hole of the attachment portion 7, and only the second clip member 50 is inserted into the insertion space 24 of the cover member 20. The depth of the insertion space 24 (the depth from the entrance of the insertion hole of the attachment portion 7 of the main body 120 to the inside of the main body 120) is longer than the length of the second clip member 50. In addition, because the tip of the second clip member 50 is substantially flat, it abuts against the reaction wall 63 and cannot press the rotating portion 61 beyond the reaction wall 63. Furthermore, the opening 54 through which the nutrition tube 55 passes is located near the center of the clip main body 52 of the second clip member 50. Therefore, even if only the second clip member 50 is inserted into the insertion space 24, the nutrition tube 55 passing through the opening 54 of the second clip member 50 abuts against the housing 12 of the main body 120, and the second clip member 50 does not reach the rotating portion 61 and is unable to press the rotating portion 61. As described above, the adapter 10 of this embodiment is not configured to enable attachment of the second clip member 50 with only the cover member 20, but the adapter 10 is not limited to such a two-part configuration and may, for example, be configured with a single part. While FIG. 7 illustrates a state in which only the cover member 20 of the adapter 10 is attached to the attachment portion 7, the same applies when the cover member 20 is not attached to the attachment portion 7.

[0047] FIG. 8 shows the details of the first clip member 40. The first clip member 40 has a tip portion 41, a left portion 42, a right portion 43, a first opening / closing portion 44 connected to the left portion 42, and a second opening / closing portion 47 connected to the right portion 43. Here, "left and right" refer to the left and right sides in a front view of the main body 120 when the first clip member 40 is attached to the attachment portion 7, as with the cover member 20 described above. The tip portion 41 has the same shape as the tip portion 31 of the detection auxiliary member 30. The first clip member 40 is made of a deformable material. The left portion 42, the right portion 43, and the first opening / closing portion 44 define an opening 45. When the first clip member 40 is attached to an infusion tube 46, the infusion tube 46 passes through the opening 45. The left portion 42 is displaceable relative to the right portion 43 to change the size of the opening 45. The first opening / closing portion 44 and the second opening / closing portion 47 are engageable with each other. When not pressed from the outside, the left portion 42 is disposed at a predetermined angle relative to the right portion 43.

[0048] 8A shows the state in which the left portion 42 and the right portion 43 approach each other by being pressed in the direction indicated by the arrows. As a result, the first opening / closing portion 44 connected to the left portion 42 and the second opening / closing portion 47 connected to the right portion 43 also approach each other and engage. This narrows the opening 45, and the infusion tube 46 in the opening 45 is closed.

[0049] 8B shows a state in which the first open-close part 44 is pressed in the direction of the arrow, thereby disengaging it from the second open-close part 47. As a result, the left part 42 connected to the first open-close part 44 is displaced away from the right part 43 connected to the second open-close part 47. This widens the opening 45, and the blockage of the infusion tube 46 inside the opening 45 is released.

[0050] As described above, the mounting portion 7 of the liquid feed pump 100 is configured to allow the first clip member 40 to be attached. Attachment of the first clip member 40 is completed when the first clip member 40 is pushed into the insertion hole of the mounting portion 7 of the main body 120 and the tip 41 of the first clip member 40 is detected by the detection unit 62. The first clip member 40 is attached to the mounting portion 7 of the main body 120 with the door 110 open to the main body 120. At this time, the first clip member 40 is attached to the mounting portion 7 in the state shown in FIG. 8A and remains in that state. Specifically, a force is applied from both sides of the mounting portion 7 in the direction of the arrows in FIG. 8A . As a result, the left portion 42 and the right portion 43 of the first clip member 40 are subjected to a force that moves them closer to each other. Because the left part 42 connects to the first opening / closing part 44 and the right part 43 connects to the second opening / closing part 47, when the left part 42 and the right part 43 receive a force that moves them closer to each other, the first opening / closing part 44 and the second opening / closing part 47 also move closer to each other. As a result, the first opening / closing part 44 and the second opening / closing part 47 engage with each other. Therefore, the infusion tube 46 in the opening 45 is blocked. This prevents unintended flow of infusion fluid due to forgetting to close the clamp.

[0051] After the first clip member 40 is attached to the attachment portion 7, the first clip member 40 is sandwiched between the main body portion 120 and the door portion 110. As a result, the first clip member 40 receives a force from the door portion 110 in the direction of the arrow in FIG. 8B. As a result, the engagement between the first opening / closing portion 44 and the second opening / closing portion 47 is released, and the left portion 42 is displaced away from the right portion 43. As a result, the occlusion of the infusion tube 46 is released. [Explanation of symbols]

[0052] 1. Air bubble detection sensor 2 Pressing part 3 Finger 4 Pipe position specification part 5. Occlusion sensor unit 6 Handle 7 Mounting part 8 Ultrasonic transmitter 9 Ultrasonic receiver 10 Adapters 12. Case 20 Cover member 21 Part 1 (left part) 22 Downstream pipe fixing part 23 Upstream pipe fixing part 24 Insertion Space 25 Second part (right part) 30 Detection auxiliary member 31 Tip 32 Elastic part 33 Component body 40 First clip member 41 Tip 42 Left part 43 Right part 44 First opening and closing section 45 Aperture 46 Fluid delivery pipe (infusion pipe) 47 Second opening and closing section 50 second clip member 51 Rear end 52 Clip body 53 Hook 54 Aperture 55 Fluid delivery tube (nutrition tube) 60 Detection mechanism 61 Rotating part 62 Detector 63 Reaction wall 101 Hinge part 102 Position holding part 103 Door housing 104 Receiving part 106 Door seal rubber 110 Door section 120 Main body

Claims

1. A liquid transfer pump that transfers a liquid in a liquid transfer pipe, an attachment portion to which a first clip member attached to the liquid feed tube can be attached; an adapter that can be detachably attached to the attachment portion; a detection unit that detects attachment of the first clip member to the attachment portion, A liquid delivery pump, wherein the adapter has a shape that, when attached to the attachment portion, makes it impossible to attach the first clip member, thereby making it impossible for the detection portion to detect the attachment of the first clip member, and enables the detection portion to detect the attachment of a second clip member having a different shape from the first clip member.

2. The liquid feed pump according to claim 1 , wherein the adapter defines an insertion space that is formed so as to prevent insertion of the first clip member and allow insertion of the second clip member.

3. 3. The liquid delivery pump of claim 2, wherein the adapter has a cover member that partitions the insertion space and a detection auxiliary member that is detected by the detection unit by being pressed and moved or deformed by the second clip member inserted into the insertion space.

4. The infusion pump according to claim 1 , wherein the first clip member is attached to an infusion tube for delivering an infusion agent.

5. The infusion pump according to claim 1 , wherein the second clip member is attached to a nutrition tube for delivering a nutrient solution.

6. a main body portion that controls the delivery of the liquid; and a door portion that is pivotally connected to the main body portion and that sandwiches the liquid delivery tube together with the main body portion, 6. The liquid transfer pump according to claim 1, wherein when the door portion is open relative to the main body portion and the first clip member is attached to the attachment portion, the liquid transfer tube to which the first clip member is attached is blocked.

7. 7. The liquid delivery pump of claim 6, wherein after the first clip member is attached to the attachment portion, the door portion is closed relative to the main body portion, and the liquid delivery tube is clamped between the main body portion and the door portion, and the blockage of the liquid delivery tube is released.

8. An adapter used in a liquid feed pump, the adapter comprising: an attachment portion capable of attaching a first clip member attached to a liquid feed tube; and a detection portion that detects attachment of the first clip member to the attachment portion, The device is configured to be detachably attached to the mounting portion, An adapter having a shape that, when attached to the attachment portion, makes it impossible to attach the first clip member, thereby making it impossible for the detection portion to detect the attachment of the first clip member, and that enables the detection portion to detect the attachment of a second clip member having a different shape from the first clip member.

9. The adapter of claim 8 , further comprising an insertion space configured to prevent insertion of the first clip member and allow insertion of the second clip member.

10. 10. The adapter according to claim 9, further comprising: a cover member that partitions the insertion space; and a detection auxiliary member that is detected by the detection unit by being pressed and moved or deformed by the second clip member inserted into the insertion space.

11. An adapter according to any one of claims 8 to 10, a fluid feeding set including the second clip member and a fluid feeding tube to which the second clip member is attached.

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