Patent Description:
For example, a liquid feeding pump disclosed in Patent Literature <NUM> is known as a liquid feeding pump used for infusion. The liquid feeding pump for infusion described in Patent Literature <NUM> is usually used exclusively for infusion, and is not used for feeding nutrients, in order to suppress erroneous attachment of a nutrient tube for feeding nutrients and an infusion tube for feeding an infusion solution.

The fact that the liquid feeding pump described in Patent Literature <NUM> can be used for feeding nutrients brings about an advantage that it is not necessary to purchase a liquid feeding pump different from the liquid feeding pump for feeding the infusion solution in order to feed the nutrients.

An object of the present invention is to provide a liquid feeding pump capable of feeding different types of liquids while preventing erroneous attachment of tubes for feeding different types of liquids. In addition, an object of the present invention is to provide an adapter for enabling feeding different types of liquids to a liquid feeding pump. Furthermore, an object of the present invention is to provide a liquid feeding set that can be mounted to a liquid feeding pump only via the adapter described above.

According to a first aspect of the present invention, a liquid feeding pump for feeding liquid in a liquid feeding tube is provided. The liquid feeding pump includes: a mounting portion to which a first clip member mounted to the liquid feeding tube is mountable; an adapter detachably attachable to the mounting portion; and a detection unit that detects mounting of the first clip member to the mounting portion. The adapter has a shape that disables detection of mounting of the first clip member by the detection unit and enables detection of mounting of a second clip member having a shape different from a shape of the first clip member by the detection unit.

According to a preferred embodiment of the liquid feeding pump of the present invention, the adapter defines an insertion space formed to disable insertion of the first clip member and enable insertion of the second clip member.

According to a preferred embodiment of the liquid feeding pump of the present invention, the adapter includes a cover member that defines the insertion space, and a detection assisting 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.

According to a preferred embodiment of the liquid feeding pump of the present invention, the first clip member is mounted to an infusion tube that feeds an infusion solution.

According to a preferred embodiment of the liquid feeding pump of the present invention, the second clip member is mounted to a nutrient tube that feeds a nutrient.

According to a preferred embodiment of the liquid feeding pump of the present invention, the liquid feeding pump includes a main body portion that controls feeding of the liquid, and a door portion pivotably connected to the main body portion to sandwich the liquid feeding tube together with the main body portion When the first clip member is mounted to the mounting portion in a state where the door portion is opened with respect to the main body portion, the liquid feeding tube to which the first clip member is mounted is closed.

According to a preferred embodiment of the liquid feeding pump of the present invention, after the first clip member is mounted to the mounting portion, the door portion is closed with respect to the main body portion, and when the liquid feeding tube is sandwiched between the main body portion and the door portion, closing of the liquid feeding tube is released.

According to a second aspect of the present invention, there is provided an adapter used in a liquid feeding pump including a mounting portion to which a first clip member mounted to the liquid feeding tube is mountable; and a detection unit that detects mounting of the first clip member to the mounting portion. The adapter has a shape that disables detection of mounting of the first clip member by the detection unit and enables detection of mounting of a second clip member having a shape different from a shape of the first clip member by the detection unit, and the adapter is configured to be detachably attached to the mounting portion.

A preferred embodiment of the adapter of the present invention defines an insertion space formed to disable insertion of the first clip member and enable insertion of the second clip member.

A preferred embodiment of the liquid feeding pump of the present invention includes a cover member that defines the insertion space, and a detection assisting 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.

According to a third aspect of the present invention, a liquid feeding set used in a liquid feeding pump is provided. 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 cannot be mounted to a mounting portion of the liquid feeding pump and can be mounted to the liquid feeding pump only via an adapter attached to the mounting portion.

According to the present invention, it is possible to provide a liquid feeding pump capable of feeding different types of liquids while preventing erroneous attachment of tubes for feeding different types of liquids. In addition, according to the present invention, it is possible to provide an adapter for enabling feeding different types of liquids to a liquid feeding pump. Furthermore, according to the present invention, it is possible to provide a liquid feeding set that can be mounted to a liquid feeding pump only via the adapter described above.

<FIG> illustrates a front view of a liquid feeding pump <NUM> according to an embodiment of the present application. <FIG> illustrates a cross-sectional perspective view of the liquid feeding pump <NUM> taken along line AA' in <FIG> and a first clip member <NUM>. <FIG> illustrates an adapter <NUM> and a second clip member <NUM> according to an embodiment of the present application. <FIG> illustrates a cross-sectional perspective view of the liquid feeding pump <NUM> taken along line AA' in <FIG> in a state where the adapter <NUM> is mounted, and the second clip member <NUM>. <FIG> illustrates a cross-sectional perspective view of the liquid feeding pump <NUM> taken along line AA' in <FIG> in a state where the adapter <NUM> is mounted, and the first clip member <NUM>.

The liquid feeding pump <NUM> includes a main body portion <NUM> and a door portion <NUM>. The door portion <NUM> is attached to main body portion <NUM> to be openable and closable. In the liquid feeding pump <NUM> illustrated in <FIG>, the door portion <NUM> is opened with respect to the main body portion <NUM>. Therefore, in <FIG>, the front surface of the main body portion <NUM> and the back surface of the door portion <NUM> are illustrated. Hereinafter, the state in which the door portion <NUM> is open with respect to the main body portion <NUM> may be simply referred to as an "open state". In addition, the state in which the door portion <NUM> is closed with respect to the main body portion <NUM> may be simply referred to as a "closed state".

In the liquid feeding pump <NUM>, liquid feeding tubes <NUM> and <NUM> capable of feeding an infusion solution and a nutrient as different types of liquids can be installed. The liquid feeding pump <NUM> can feed the liquid in the liquid feeding tubes <NUM> and <NUM> by pressing the liquid feeding tubes <NUM> and <NUM> installed. Although details will be described later, in the liquid feeding pump <NUM> of the present embodiment, the door portion <NUM> is brought into the closed state from a state where the door portion <NUM> is in the open state and the liquid feeding tubes <NUM> and <NUM> are disposed at predetermined positions of the main body portion <NUM>. Thus, the installation of the liquid feeding tubes <NUM> and <NUM> to the liquid feeding pump <NUM> is completed. For example, an infusion bag containing a liquid such as a predetermined medicinal solution is connected to the flow path upstream side (upper side of <FIG>, <FIG>, <FIG>, and <FIG>) of the liquid feeding tubes <NUM> and <NUM> with respect to the portion of the liquid feeding tubes <NUM> and <NUM> installed in the liquid feeding pump <NUM>. In addition, for example, a clamp member and an indwelling catheter are connected to the flow path downstream side (lower side of <FIG>, <FIG>, <FIG>, and <FIG>) of the liquid feeding tubes <NUM> and <NUM> with respect to the portion of the liquid feeding tubes <NUM> and <NUM> installed in the liquid feeding pump <NUM>. The indwelling catheter is indwelled in a state of being punctured into a vein or the like of a patient. By using the liquid feeding pump <NUM>, the flow rate (liquid feeding speed) or the like of the liquid in the liquid feeding tubes <NUM> and <NUM> per unit time is controlled. Therefore, the amount of the liquid in the infusion bag administered to the patient per unit time or the like can be controlled by the liquid feeding pump <NUM>.

As illustrated in <FIG>, the main body portion <NUM> includes an air bubble detection sensor unit <NUM>, a pressing portion <NUM>, a tube position defining unit <NUM>, a closing sensor unit <NUM>, and a mounting portion <NUM>.

The air bubble detection sensor unit <NUM> includes an ultrasonic transmission unit <NUM> and an ultrasonic reception unit <NUM>. The air bubble detection sensor unit <NUM> detects the presence or absence of air bubbles in the liquid feeding tubes <NUM> and <NUM> in a state where the door portion <NUM> is in the closed state. More specifically, the liquid feeding tubes <NUM> and <NUM> are disposed between the ultrasonic transmission unit <NUM> and the ultrasonic reception unit <NUM>, and the ultrasonic transmission unit <NUM> transmits a predetermined signal such as an ultrasonic wave to the ultrasonic reception unit <NUM>. In a case where the signal intensity at which the ultrasonic signal is received is high, it is determined that no air bubble is detected, and when the signal intensity at which the ultrasonic signal is received is low, it is determined that an air bubble is detected.

The pressing portion <NUM> includes a plurality of fingers <NUM>. The plurality of fingers <NUM> is arranged from the flow path upstream side to the flow path downstream side of the liquid feeding tubes <NUM> and <NUM>. Each of the plurality of fingers <NUM> can reciprocate in a direction facing a receiving portion <NUM> of the door portion <NUM> described later by the driving means. The plurality of fingers <NUM> is driven by the drive unit described above to sequentially press and close the liquid feeding tubes <NUM> and <NUM> from the flow path upstream side toward the flow path downstream side. As a result, the liquid feeding tubes <NUM> and <NUM> can perform peristaltic movement. The pressing portion <NUM> of the present embodiment includes eight fingers <NUM>, but the number of fingers is not limited to eight in the present embodiment, and may be less than eight or nine or more. In addition, in the pressing portion <NUM> of the present embodiment, the finger <NUM> forms a contact body that comes into contact with the liquid feeding tubes <NUM> and <NUM>, but for example, a contact body used in a so-called "roller pump" may be formed by squeezing the liquid feeding tubes <NUM> and <NUM> using a roller that revolves around a predetermined rotation central axis and is rotatable.

The tube position defining unit <NUM> defines a position in a direction orthogonal to the central axis direction of the liquid feeding tubes <NUM> and <NUM> when the liquid feeding tubes <NUM> and <NUM> are mounted to the front surface of the main body portion <NUM>.

The closing sensor unit <NUM> includes a permanent magnet and a pickup for analog detection of a movement amount of the permanent magnet. For example, the closing sensor unit <NUM> detects the closing state of the liquid feeding tubes <NUM> and <NUM> by detecting the movement amount of the permanent magnet that has moved in accordance with the internal pressure change accompanying the closing state of the liquid feeding tubes <NUM> and <NUM>.

As illustrated in <FIG>, the main body portion <NUM> may further include a handle <NUM> for the user to grip when carrying the liquid feeding pump <NUM>.

As illustrated in <FIG> and <FIG>, the mounting portion <NUM> is configured to be mountable to the first clip member <NUM> attached to the infusion tube as a liquid feeding tube <NUM> used for feeding the infusion solution. That is, the mounting portion <NUM> has a shape conforming to the first clip member <NUM>. More specifically, the mounting portion <NUM> is configured in a manner that the mounting of the first clip member <NUM> can be detected by a detection unit <NUM> described later. Note that, in <FIG>, the liquid feeding tube <NUM> is omitted for convenience of description. This will be described later in detail.

As illustrated in <FIG>, <FIG>, <FIG>, <FIG>, and <FIG>, the adapter <NUM> can be attached to the mounting portion <NUM>. The adapter <NUM> attached to the mounting portion <NUM> can be mounted to the second clip member <NUM> attached to a nutrient tube as a liquid feeding tube <NUM> used for feeding a nutrient. More specifically, the adapter <NUM> is configured in a manner that the mounting of the second clip member <NUM> can be detected by the detection unit <NUM> described later in a state of being attached to the mounting portion <NUM>. In addition, the adapter <NUM> is configured to enable mounting of the second clip member <NUM> to the liquid feeding pump <NUM> but disable mounting of the first clip member <NUM> to the liquid feeding pump <NUM>. The adapter <NUM> has a shape that can be attached to the mounting portion <NUM>, and is detachably attached to the mounting portion <NUM>. Therefore, the adapter <NUM> is removed from the mounting portion <NUM> when the first clip member <NUM> is attached, and the adapter <NUM> is attached to the mounting portion <NUM> when the second clip member <NUM> is attached. As described later, in the present embodiment, the adapter <NUM> includes a cover member <NUM> and a detection assisting member <NUM>. However, another form of adapter may be used.

As illustrated in <FIG>, the door portion <NUM> includes a door housing <NUM>. The door housing <NUM> is pivotably attached to a housing <NUM> of the main body portion <NUM> via a hinge portion <NUM>. In this manner, the door portion <NUM> of the present embodiment is configured to be openable and closable with respect to the main body portion <NUM>.

On the back surface side of the door portion <NUM>, a door seal rubber <NUM> is disposed. The door seal rubber <NUM> is formed of an elastomer, and prevents the medicinal solution from entering the inside of the main body portion <NUM> in the closed state of the door portion <NUM>.

In addition, a position holding portion <NUM> is disposed on the back surface side of the door portion <NUM>. When the door portion <NUM> is closed with respect to the main body portion <NUM>, the position holding portion <NUM> positions the liquid feeding tubes <NUM> and <NUM> by abutting on the liquid feeding tubes <NUM> and <NUM>.

In addition, the receiving portion <NUM> is disposed on the back surface side of the door portion <NUM>. The receiving portion <NUM> sandwiches the liquid feeding tubes <NUM> and <NUM> together with the pressing portion <NUM>. In addition, the receiving portion <NUM> is disposed to face the pressing portion <NUM>. The pressing portion <NUM> can press the liquid feeding tubes <NUM> and <NUM> sandwiched between the pressing portion <NUM> and the receiving portion <NUM> toward the receiving portion <NUM>.

Next, a configuration for detecting mounting of the first clip member <NUM> and the second clip member <NUM> in the liquid feeding pump <NUM> will be described. As illustrated in <FIG>, the first clip member <NUM> is mounted to an infusion tube (hereinafter, this is referred to as an "infusion tube <NUM>") as a liquid feeding tube <NUM> for feeding an infusion solution. As illustrated in <FIG>, the first clip member <NUM> is configured to be insertable into the insertion hole of the mounting portion <NUM>. A detection mechanism <NUM> is provided when the liquid feeding pump <NUM> moves from the mounting portion <NUM> to the inside of the main body portion <NUM>. In the present embodiment, the detection mechanism <NUM> includes a semicircular columnar rotation unit <NUM> and the detection unit <NUM>, but a detection mechanism of another form may be used. The illustrated infusion tube <NUM> and the first clip member <NUM> constitute a liquid feeding set.

Referring to <FIG>, when the first clip member <NUM> is attached to the mounting portion <NUM>, a protruding distal end portion <NUM> of the first clip member <NUM> collides with the radial rotation unit <NUM> of the detection mechanism <NUM>. By the collision, the semicircular columnar rotation unit <NUM> rotates about a central axis positioned at a substantially circular central portion of the semicircular bottom surface. When the rotation unit <NUM> rotates, the position of the concave portion formed on the curved side surface on the arc of the rotation unit <NUM> coincides with the position of the detection unit <NUM>. As a result, the detection unit <NUM> of the detection mechanism <NUM> detects the first clip member <NUM>. Accordingly, the liquid feeding pump <NUM> can detect that the first clip member <NUM> is mounted to the mounting portion <NUM>.

As described above, <FIG> illustrates the adapter <NUM> that can be attached to the mounting portion <NUM> of the liquid feeding pump <NUM> and the second clip member <NUM> that can be attached to the mounting portion <NUM> via the adapter <NUM>. In the present embodiment, the adapter <NUM> includes the cover member <NUM> and the detection assisting member <NUM>. However, the form of the adapter <NUM> is not limited to the present embodiment.

The cover member <NUM> includes a first portion <NUM>, a second portion <NUM>, an upstream tube fixing portion <NUM>, and a downstream tube fixing portion <NUM>. Hereinafter, for convenience of description, in a front view of the main body portion <NUM> in a state where the cover member <NUM> is attached to the mounting portion <NUM>, the first portion <NUM> positioned on the left side of an insertion space <NUM> described later will be referred to as a "left portion <NUM>", and the second portion <NUM> positioned on the right side of the insertion space <NUM> will be referred to as a "right portion <NUM>". The left portion <NUM>, the right portion <NUM>, the upstream tube fixing portion <NUM>, and the downstream tube fixing portion <NUM> define the insertion space <NUM> that enables insertion of the second clip member <NUM> but does not disable insertion of the first clip member <NUM>. The upstream tube fixing portion <NUM> and the downstream tube fixing portion <NUM> include a concave portion for fixing a nutrient tube (hereinafter, this is referred to as a "nutrient tube <NUM>") as the liquid feeding tube <NUM> to which the second clip member <NUM> is attached. In the cover member <NUM> of the present embodiment, the concave portion of the upstream tube fixing portion <NUM> and the concave portion of the downstream tube fixing portion <NUM> are aligned in a manner that the nutrient tube <NUM> extends substantially vertically in a state of being attached to the mounting portion <NUM> of the liquid feeding pump <NUM>. In addition, the cover member <NUM> can be fixed to the main body portion <NUM> by fixing the left side surface of the left portion <NUM> and the right side surface of the right portion <NUM> to the vicinity of the inlet of the insertion hole of the mounting portion <NUM>.

The detection assisting member <NUM> includes a distal end portion <NUM>, an elastic portion <NUM>, and a member main body portion <NUM>. The distal end portion <NUM> protrudes from the distal end surface of the member main body portion <NUM>. In addition, the elastic portion <NUM> is disposed adjacent to the distal end portion <NUM>, extends from the distal end surface of the member main body portion <NUM> in the same direction as the protruding direction of the distal end portion <NUM>, and is configured to be elastically deformable in this direction. The elastic portion <NUM> is formed of, for example, a coil spring. The elastic portion <NUM> is attached to the mounting portion <NUM> of the liquid feeding pump <NUM> to be sandwiched between the distal end surface of the member main body portion <NUM> and a reaction force wall portion <NUM> of the main body portion <NUM> of the liquid feeding pump <NUM> (see <FIG>). The detection assisting member <NUM> enables the detection unit <NUM> of the detection mechanism <NUM> to detect the second clip member <NUM>. More specifically, the adapter <NUM> is attached to the mounting portion <NUM> in the order of the detection assisting member <NUM> and the cover member <NUM>, and the second clip member <NUM> is inserted into the insertion space <NUM> defined by the cover member <NUM>. As a result, the member main body portion <NUM> of the detection assisting member <NUM> is pressed by the second clip member <NUM>. As a result, the elastic portion <NUM> is compressed and deformed between the member main body portion <NUM> and the reaction force wall portion <NUM>.

The distal end portion <NUM> protruding from the member main body portion <NUM> moves toward the side of the detection unit <NUM> through the opening adjacent to the reaction force wall portion <NUM> and extending toward the detection unit <NUM>, and collides with the rotation unit <NUM> of the detection mechanism <NUM> provided at the depth of the insertion hole of the mounting portion <NUM>. When the distal end portion <NUM> collides with the rotation unit <NUM>, the rotation unit <NUM> rotates, and the position of the concave portion formed on the curved side surface on the arc of the rotation unit <NUM> coincides with the position of the detection unit <NUM>. As a result, the detection unit <NUM> detects the second clip member <NUM>. As described above, in the present embodiment, the detection assisting member <NUM> moves by being pressed by the second clip member <NUM>, realizing the detection of the second clip member <NUM>.

The second clip member <NUM> includes a rear end portion <NUM>, a clip main body portion <NUM>, and a hook <NUM>. The clip main body portion <NUM> is provided with an opening <NUM> through which the nutrient tube <NUM> penetrates. The hook <NUM> is configured to engage with the cover member <NUM> attached to the mounting portion <NUM>.

<FIG> illustrates a cross-sectional perspective view of the liquid feeding pump <NUM> taken along line AA' in <FIG> in a state where only the cover member <NUM> of the adapter <NUM> is mounted to the mounting portion <NUM>, and the second clip member <NUM> mounted to the nutrient tube <NUM> that feeds nutrients. Originally, the detection assisting member <NUM> is attached to the mounting portion <NUM> before the cover member <NUM> is attached, but <FIG> illustrates a state in which only the cover member <NUM> is attached for convenience of description. Note that the second clip member <NUM> is previously attached to the illustrated nutrient tube <NUM>, and constitutes a liquid feeding set together with the nutrient tube <NUM>.

<FIG> is a cross-sectional perspective view of the liquid feeding pump <NUM> taken along line AA' in <FIG> in a state where both the cover member <NUM> and the detection assisting member <NUM> of the adapter <NUM> are mounted to the mounting portion <NUM>. As illustrated in <FIG>, the elastic portion <NUM> is installed in a state of being sandwiched between the member main body portion <NUM> and the reaction force wall portion <NUM> of the main body portion <NUM> in the insertion hole of the mounting portion <NUM>. The detection assisting member <NUM> cannot move further inward due to the elastic force of the elastic portion <NUM>. Therefore, unless the member main body portion <NUM> is pressed against the elastic force of the elastic portion <NUM> to approach the rotation unit <NUM>, the distal end portion <NUM> does not reach the rotation unit <NUM> of the detection mechanism <NUM> and does not contact the rotation unit <NUM>.

<FIG> illustrates a state in which the second clip member <NUM> is inserted into the insertion space <NUM> of the cover member <NUM> and the second clip member <NUM> presses the detection assisting member <NUM>. In addition, <FIG> illustrates a plan view of the mounting portion <NUM> of the liquid feeding pump <NUM> and the detection mechanism <NUM>. As illustrated in <FIG> and <FIG>, the detection assisting member <NUM> is pressed by the second clip member <NUM> to be detected by the detection unit <NUM>. Specifically, the member main body portion <NUM> of the detection assisting member <NUM> is pressed by the clip main body portion <NUM> of the second clip member <NUM>. As a result, the member main body portion <NUM> moves in a direction approaching the reaction force wall portion <NUM> against the elastic force of the elastic portion <NUM>. Therefore, the distal end portion <NUM> disposed adjacent to the elastic portion <NUM> moves toward the rotation unit <NUM> of the detection mechanism <NUM> through the opening adjacent to the reaction force wall portion <NUM> and presses the rotation unit <NUM>. The rotation unit <NUM> is rotated by pressing by the distal end portion <NUM>, and the concave portion of the rotation unit <NUM> moves to the position of the detection unit <NUM>. Accordingly, the detection unit <NUM> detects that the second clip member <NUM> is mounted to the mounting portion <NUM> via the adapter <NUM>. As described above, the liquid feeding pump <NUM> to which the adapter <NUM> is attached can detect the mounting of the second clip member <NUM>. In response to the detection mechanism <NUM> recognizing the second clip member <NUM>, the liquid feeding pump <NUM> can perform the liquid feeding operation in response to the request of the user. As described above, in the present embodiment, the detection assisting member <NUM> moves by being pressed by the second clip member <NUM>, realizing the detection of the second clip member <NUM>. As a result, the nutrient can be fed by the liquid feeding pump <NUM> for infusion.

<FIG> illustrates a cross-sectional perspective view of the liquid feeding pump <NUM> taken along line AA' in <FIG> in a state where both the cover member <NUM> and the detection assisting member <NUM> of the adapter <NUM> is mounted to the mounting portion <NUM>, and the first clip member <NUM> mounted to the infusion tube <NUM>. Note that the first clip member <NUM> is previously attached to the illustrated infusion tube <NUM>, and constitutes a liquid feeding set together with the infusion tube <NUM>.

<FIG> illustrates a case where the first clip member <NUM> is to be mounted in a state where both the cover member <NUM> and the detection assisting member <NUM> are mounted to the mounting portion <NUM> of the liquid feeding pump <NUM>. The detection assisting member <NUM> is not in contact with the first clip member <NUM> and is not pressed by the first clip member <NUM>, and thus is not detected by the detection unit <NUM>. Specifically, the insertion space <NUM> defined by the cover member <NUM> is defined to disable insertion of the first clip member <NUM>. Therefore, the first clip member <NUM> cannot be inserted into the insertion space <NUM>. Therefore, the first clip member <NUM> does not come into contact with the detection assisting member <NUM> positioned at the depth of the insertion space <NUM>, and cannot press the detection assisting member <NUM>. Therefore, the detection assisting member <NUM> does not move against the elastic force of the elastic portion <NUM> and does not move to the inside of the main body portion <NUM>. Therefore, the rotation unit <NUM> is not pressed by the distal end portion <NUM>. Therefore, the detection unit <NUM> of the detection mechanism <NUM> cannot detect that the first clip member <NUM> is mounted to the liquid feeding pump <NUM>. As described above, in the present embodiment, the cover member <NUM> of the adapter <NUM> prevents insertion of the first clip member <NUM>, in a manner that the first clip member <NUM> cannot be mounted to the mounting portion <NUM>.

As described above, the insertion space <NUM> of the cover member <NUM> is defined to enable insertion of the second clip member <NUM> and disable insertion of the first clip member <NUM>. Therefore, in a case where the cover member <NUM> is mounted to the mounting portion <NUM>, the first clip member <NUM> cannot be mounted to the mounting portion <NUM>. As a result, it is possible to prevent the infusion tube <NUM> from being erroneously mounted when the nutrient tube <NUM> is to be mounted to the liquid feeding pump <NUM>.

<FIG> is a cross-sectional perspective view of the liquid feeding pump <NUM> taken along line AA' in <FIG> in a state where only the cover member <NUM> of the adapter <NUM> is attached to the mounting portion <NUM>. <FIG> illustrates a state in which the detection assisting member <NUM> is not disposed in the insertion hole of the mounting portion <NUM> and only the second clip member <NUM> is inserted into the insertion space <NUM> of the cover member <NUM>. The depth of the insertion space <NUM> (the depth length from the inlet of the insertion hole of the mounting portion <NUM> of the main body portion <NUM> to the inside of the main body portion <NUM>) is longer than the length of the second clip member <NUM>. In addition, since the distal end of the second clip member <NUM> is substantially flat, the second clip member abuts on the reaction force wall portion <NUM> and cannot press the rotation unit <NUM> beyond the reaction force wall portion <NUM>. Moreover, since the opening <NUM> through which the nutrient tube <NUM> penetrates is provided near the center of the clip main body portion <NUM> of the second clip member <NUM>, even if only the second clip member <NUM> is inserted into the insertion space <NUM>, the nutrient tube <NUM> penetrating the opening <NUM> of the second clip member <NUM> abuts on the housing <NUM> of the main body portion <NUM>, in a manner that the second clip member <NUM> does not reach the rotation unit <NUM> and cannot press the rotation unit <NUM>. As described above, the adapter <NUM> of the present embodiment does not enable the mounting of the second clip member <NUM> only with the cover member <NUM>, but the adapter <NUM> is not limited to such a two-component configuration, and may be a one-component configuration, for example. In <FIG>, the description has been made based on the state in which only the cover member <NUM> of the adapter <NUM> is mounted to the mounting portion <NUM>, but the same applies to the state in which the cover member <NUM> is not mounted to the mounting portion <NUM>.

<FIG> illustrates details of the first clip member <NUM> alone. The first clip member <NUM> includes the distal end portion <NUM>, a left portion <NUM>, a right portion <NUM>, a first opening and closing portion <NUM> connected to the left portion <NUM>, and a second opening and closing portion <NUM> connected to the right portion <NUM>. Here, similarly to the cover member <NUM> described above, "left and right" means left and right of the main body portion <NUM> in a front view in a state where the first clip member <NUM> is mounted to the mounting portion <NUM>. The distal end portion <NUM> has the same shape as the distal end portion <NUM> of the detection assisting member <NUM>. The first clip member <NUM> is made of a deformable material. The left portion <NUM>, the right portion <NUM>, and the first opening and closing portion <NUM> define an opening <NUM>. When the first clip member <NUM> is attached to the infusion tube <NUM>, the infusion tube <NUM> penetrates through the opening <NUM>. The left portion <NUM> is displaceable with respect to the right portion <NUM> to change the size of the opening <NUM>. The first opening and closing portion <NUM> and the second opening and closing portion <NUM> can be engaged with each other. In a state of not being pressed from the outside, the left portion <NUM> is disposed to form a predetermined angle with respect to the right portion <NUM>.

<FIG> illustrates a state in which the left portion <NUM> and the right portion <NUM> approach each other by being pressed in the direction indicated by the arrow. As a result, the first opening and closing portion <NUM> connected to the left portion <NUM> and the second opening and closing portion <NUM> connected to the right portion <NUM> are also brought close to and engaged with each other. Accordingly, the opening <NUM> is narrowed, and the infusion tube <NUM> in the opening <NUM> is closed.

<FIG> illustrates a state in which the first opening and closing portion <NUM> is released from the engagement with the second opening and closing portion <NUM> by being pressed in the direction of the arrow. As a result, the left portion <NUM> connected to the first opening and closing portion <NUM> is displaced to be separated from the right portion <NUM> connected to the second opening and closing portion <NUM>. Accordingly, the opening <NUM> expands, and the closing of the infusion tube <NUM> in the opening <NUM> is released.

As described above, the mounting portion <NUM> of the liquid feeding pump <NUM> is configured to enable mounting of the first clip member <NUM>. The mounting of the first clip member <NUM> is completed when the first clip member <NUM> is pushed into the insertion hole of the mounting portion <NUM> of the main body portion <NUM> and the distal end portion <NUM> of the first clip member <NUM> is detected by the detection unit <NUM>. The first clip member <NUM> is mounted to the mounting portion <NUM> of the main body portion <NUM> in a state where the door portion <NUM> is opened with respect to the main body portion <NUM>. At this time, the first clip member <NUM> is mounted to the mounting portion <NUM> in the state illustrated in <FIG>, and this state is maintained. Specifically, a force is received from both sides of the mounting portion <NUM> in the direction of the arrow in <FIG>. As a result, the left portion <NUM> and the right portion <NUM> of the first clip member <NUM> receive a force approaching each other. Since the left portion <NUM> is connected to the first opening and closing portion <NUM> and the right portion <NUM> is connected to the second opening and closing portion <NUM>, the first opening and closing portion <NUM> and the second opening and closing portion <NUM> also approach each other when the left portion <NUM> and the right portion <NUM> receive a force to approach each other. As a result, the first opening and closing portion <NUM> and the second opening and closing portion <NUM> are engaged with each other. Therefore, the infusion tube <NUM> in the opening <NUM> is closed. This prevents an unintended flow of the infusion due to forgetting to close the clamp.

Claim 1:
A liquid feeding pump (<NUM>) for feeding liquid in a liquid feeding tube, the liquid feeding pump comprising:
a mounting portion (<NUM>) to which a first clip member (<NUM>) mounted to the liquid feeding tube (<NUM>) is mountable;
an adapter (<NUM>) detachably attachable to the mounting portion; and
a detection unit (<NUM>) that detects mounting of the first clip member to the mounting portion, characterized in that
the adapter has a shape that disables detection of mounting of the first clip member by the detection unit and enables detection of mounting of a second clip member (<NUM>) having a shape different from a shape of the first clip member by the detection unit.