Protective member

Abstract

To provide a protective member capable of improving drainage in the vicinity of a connection part.SOLUTION: An opening 114g is formed so that the connecting part can be visually recognized when the connecting part 32H is viewed from the inside of the protective member along a mounting direction when the protective member 30 is mounted on the holder 11.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] The present invention relates to a protective member. [Background technology]

[0002] BACKGROUND ART Portable drug solution administration devices that administer drug solutions such as insulin over time while attached to the skin of a patient or subject have been known as devices for administering drug solutions.

[0003] A drug solution administration device generally includes a liquid delivery unit and a holder. The liquid delivery unit includes a liquid delivery storage unit in which the drug solution is stored and a drive mechanism that generates a drive force to deliver the drug solution in the drug solution storage unit into a living body. The holder includes an attachment unit to which the liquid delivery unit is attached, a connecting unit that is liquid-tightly connected to the drug solution storage unit when the liquid delivery unit is attached to the attachment unit, and a cannula that injects the drug solution delivered from the drug solution storage unit via the connecting unit into the living body.

[0004] In a medicinal liquid administration device configured in this manner, when the device comes into contact with liquid, such as during bathing, the liquid delivery unit is detached from the holder because the liquid delivery unit includes an electrical mechanism. If a user takes a bath or the like with the liquid delivery unit detached from the holder, there is a risk that a hand or other member may come into contact with a mechanical fitting (protrusion or hole) provided on the holder that engages with the liquid delivery unit, causing the holder attached to the living body to unintentionally come off.

[0005] In this regard, for example, Patent Document 1 listed below discloses a protective member that can be attached to and detached from a drug solution administration device, and the protective member protects the attachment part by being attached to the attachment part when the liquid delivery part is removed. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2017-136271 Summary of the Invention [Problem to be solved by the invention]

[0007] In the protective member disclosed in Patent Document 1, the connecting portion provided on the holder is fitted in a compressed state relative to the sealing member of the protective member, which undesirably reduces drainage near the connecting portion.

[0008] The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a protective member that can improve drainage in the vicinity of a connecting portion. [Means for solving the problem]

[0009] The above object of the present invention can be achieved by the following means.

[0010] (1) a liquid delivery unit including a liquid medicine storage unit that stores a liquid medicine and a drive mechanism that generates a drive force to deliver the liquid medicine in the liquid medicine storage unit into a living body; a holder including a mounting portion to which the liquid delivery portion is attached, a connecting portion that is liquid-tightly connected to the liquid delivery portion when the liquid delivery portion is attached to the mounting portion, and a cannula that injects the liquid delivery portion delivered from the liquid delivery portion through the connecting portion into the living body, the protective member is attached to the attachment portion in a state where the liquid delivery portion is detached from the holder, A protective member having an opening formed therein such that, when the protective member is attached to the attachment portion, the connecting portion can be seen when viewed from the internal space of the protective member along the attachment direction when the protective member is attached to the holder.

[0011] (2) the mounting section includes a mounting surface on which the liquid delivery section is placed, and a first vertical wall section that is provided around the mounting surface and defines an accommodation space in which the liquid delivery section is accommodated, The protective member is a flat surface portion that faces the placement surface when the device is attached to the attachment portion; and a second vertical wall portion provided opposite to the first vertical wall portion, the second vertical wall portion has a first surface that is perpendicular to the mounting direction and is formed at a position spaced a predetermined distance from a tip end in the mounting direction toward a base end, The opening is formed in the first surface, The protective member described in (1), wherein when the connecting portion is viewed from the internal space of the protective member, the opening provided on the first surface has a clearance with respect to the outer peripheral edge of the connecting portion.

[0012] (3) the mounting section includes a mounting surface on which the liquid delivery section is placed, and a first vertical wall section that is provided around the mounting surface and defines an accommodation space in which the liquid delivery section is accommodated, The protective member is a flat surface portion that faces the placement surface when the device is attached to the attachment portion; and a second vertical wall portion provided opposite to the first vertical wall portion, The protection member according to (1), wherein the internal space covered by the second vertical wall portion is configured to form one chamber.

[0013] (4) a communication hole that communicates the inside and outside of the internal space of the protection member when the protection member is attached to the attachment portion; The protective member according to any one of (1) to (3), wherein the communication hole is provided along the outer periphery of the flat portion.

[0014] (5) The protective member according to (4), wherein the communication holes are formed intermittently along the outer periphery of the flat portion. [Effects of the Invention]

[0015] According to the protective member of the present invention, when the protective member is attached to the attachment portion, an opening is formed so that the connecting portion can be seen when viewed from the internal space of the protective member along the attachment direction when the protective member is attached to the holder. Therefore, the connecting portion is not in a compressed state by abutting against other components, and is arranged in a state independent from other components. Therefore, it is possible to provide a protective member that can improve drainage near the connecting portion. [Brief explanation of the drawings]

[0016] [Figure 1A] 1 is a schematic diagram showing a drug solution administration device of a drug solution administration instrument. [Figure 1B] FIG. 2 is a schematic view showing a state in which the protection member according to the embodiment is attached to a holder. [Figure 2] FIG. 2 is an exploded perspective view showing a liquid delivery main body of the drug solution administration device according to the embodiment. [Figure 3] FIG. 2 is a plan view showing a holder of the drug solution administration device according to the embodiment. [Figure 4A] 4 is an enlarged cross-sectional view taken along line 4-4 of FIG. 3, showing the state before the cannula is introduced into the living body. [Figure 4B] 4 is an enlarged cross-sectional view taken along line 4-4 of FIG. 3, showing the state in which the cannula has been introduced into the living body by the puncture tool. FIG. [Figure 4C] 4 is an enlarged cross-sectional view taken along line 4-4 of FIG. 3, showing the state in which the puncture tool has been removed and the cannula is left in the living body. FIG. [Figure 5] 2 is a schematic plan view showing the structure of each part of the liquid delivery main body of the drug solution administration device. FIG. [Figure 6A] FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. 5, showing a state before the holder and the liquid delivery section are connected. [Figure 6B] 6 is a cross-sectional view taken along line 6-6 in FIG. 5, showing a state in which the holder and the liquid delivery section are connected. FIG. [Figure 7] FIG. 10 is a perspective view showing a state before a protective member is attached to a holder. [Figure 8A]8 is a perspective view showing the protective member according to the present embodiment when viewed from the direction of arrow A in FIG. 7. FIG. [Figure 8B] FIG. 2 is a bottom view of the protection member according to the embodiment. [Figure 9] 6A and 6B are views showing an opening provided in a second vertical wall portion of the protection member according to the embodiment. [Figure 10] 10 is a view of the connecting portion viewed from the inside of the protective member along the mounting direction. FIG. [Figure 11] FIG. 10 is a diagram corresponding to FIG. 9 according to Modification 1. [Figure 12] FIG. 10 is a diagram corresponding to FIG. 9 according to a second modification. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The size and proportion of each component in the drawings may be exaggerated for the sake of explanation and may differ from the actual size and proportion.

[0018] 1A to 6B are diagrams illustrating the configuration of each part of the drug solution administration device 100. Figures 7 to 10 are diagrams illustrating the configuration of a protection member 30 according to this embodiment.

[0019] 1, a medicinal solution administration apparatus 1 according to this embodiment includes a medicinal solution administration device 100 that administers a medicinal solution into a living body, and a protective member 30 that is detachable from the medicinal solution administration device 100. The configurations of the medicinal solution administration device 100 and the protective member 30 will be described below in that order.

[0020] (Medicinal solution administration device 100) The medicinal liquid administration device 100 according to this embodiment is configured as a portable insulin administration device that delivers insulin as a medicinal liquid into the living body of a diabetic patient who is the user.

[0021] As shown in FIG. 1A, the medicinal liquid administration device 100 includes a liquid delivery main body 10 that performs a liquid delivery operation to deliver insulin, which is a medicinal liquid, into a living body, and a remote control 20 that issues various operational instructions to the liquid delivery main body 10.

[0022] As shown in Figure 2, the liquid delivery main body 10 includes a holder 11 that is attached to the user's body and includes a cannula 113 to be placed inside the user's body, a liquid delivery section 12 that includes a liquid delivery reuse section 13 that includes a drive mechanism 131 that generates a driving force to drive components necessary for the liquid delivery operation, and a liquid delivery disposable section 14 that includes a drug solution storage section 141 filled with insulin.

[0023] Holder 11 and fluid delivery unit 12 are configured to be connectable and detachable. For example, when taking a bath, the user separates fluid delivery unit 12, which includes medicinal solution storage unit 141 filled with insulin and an electrical mechanism, from holder 11 while leaving holder 11 attached to the living body. By performing this procedure, it is possible to prevent the insulin in medicinal solution storage unit 141 from being heated and deteriorated by bathing, etc., and to prevent liquid from entering the electrical mechanism in fluid delivery unit 12.

[0024] Furthermore, the reusable liquid delivery unit 13 and the disposable liquid delivery unit 14 are configured to be connectable and detachable. After a predetermined period of use, when the insulin or the like in the medicinal solution storage unit 141 is used up, the reusable liquid delivery unit 13 and the disposable liquid delivery unit 14 can be separated, and the disposable liquid delivery unit 14 can be made disposable and replaced with a new one. On the other hand, the reusable liquid delivery unit 13 is equipped with relatively expensive components that are replaced less frequently than the components equipped in the disposable liquid delivery unit 14, such as a motor 136 and multiple gears 137 described below. In this way, the components that are discarded after a predetermined period of use and the relatively expensive components are installed in different housings, and the relatively expensive components are installed in the reusable liquid delivery unit 13 so that they can be reused, thereby reducing the manufacturing costs and costs associated with the device. Each component is described below.

[0025] First, we will explain holder 11. As shown in Fig. 2 etc., holder 11 has a holder main body part (corresponding to a wearing part, also called a cradle) 111, an attachment part 112 that attaches holder main body part 111 to the living body of a user, a cannula 113 that protrudes from holder main body part 111 and is placed in the living body, and a support member 114 that is placed on holder main body part 111 and supports cannula 113.

[0026] 2, the liquid delivery unit 12 is attached to the holder main body 111. The holder main body 111 includes a flat mounting surface 111a on which the liquid delivery unit 12 is placed, and a first vertical wall 111b formed by raising a part of the outer periphery of the mounting surface 111a. As shown in FIGS. 4A and 4B, an insertion hole 111c through which a cannula 113 can be inserted is formed in the mounting surface 111a.

[0027] 2, the first vertical wall portion 111b has a through-hole 111e formed therein as an engaging portion for maintaining a mechanically coupled state with a second housing 145 of the disposable liquid feeding portion 14, which will be described later. When the second housing 145 of the disposable liquid feeding portion 14 is coupled to the holder main body portion 111 by sliding it in the surface direction of the mounting surface 111a (corresponding to the mounting direction, see arrow W in FIG. 7), a first hook portion 145d formed on the second housing 145 is hooked onto the through-hole 111e. Note that the shape of the engaging portion is not limited to the above-described shape, as long as the holder main body portion 111 and the second housing 145 of the disposable liquid feeding portion 14 can be coupled and separated.

[0028] 3, first vertical wall portion 111b is provided on three sides and not on one side in top view. Because first vertical wall portion 111b is configured in this manner, liquid delivery unit 12 or protective member 30 can be attached by sliding it in the surface direction of mounting surface 111a relative to holder main body portion 111. Furthermore, first vertical wall portion 111b defines a storage space in which liquid delivery unit 12 or protective member 30 is stored.

[0029] 3 and 4A to 4C, the attachment part 112 is made of a substantially rectangular sheet-like member. The attachment part 112 has adhesiveness on the surface opposite to the surface on which the first vertical wall part 111b stands on the mounting surface 111a of the holder main body part 111. The adhesiveness of the attachment part 112 makes it possible to attach the holder 11 to the living body of the user.

[0030] Cannula 113 is inserted into a living body and is used to introduce insulin from medicinal solution storage section 141 into the living body. As shown in Fig. 4A, cannula 113 has a cylindrical portion that is inserted into the living body and a truncated cone portion that is formed continuous with the cylindrical portion, and a lumen through which insulin flows is formed continuous with the cylindrical portion and the truncated cone portion. By having the above-mentioned shape, cannula 113 is configured to have a so-called funnel shape.

[0031] 4A to 4C, the support member 114 includes a base 114a that supports the cannula 113, a connection port 114b having an inner cavity into which the liquid delivery tube 142 (see FIGS. 6A and 6B) of the liquid delivery disposable unit 14 is inserted, a sealing member 114c attached to cover the connection port 114b, a lid member 114d attached to the upper surface of the base 114a (the surface opposite to the surface on the holder main body 111), and a sealing member 114e provided between the base 114a and the lid member 114d. The connection port 114b and the sealing member 114c form a connecting portion 114g that is liquid-tightly connected to the medicinal solution storage unit 141 (described later) when the liquid delivery unit 12 is attached to the holder main body 111. The sealing member 114c and the sealing member 114e are made of natural rubber or an elastomer.

[0032] The cannula 113 can be placed inside the living body using, for example, a puncture tool M that includes a needle N that can be inserted into the inner cavity of the cannula 113 supported by a support member 114, and a biasing member (not shown) that applies a biasing force to the support member 114 and the needle N in the direction in which the needle N and the cannula 113 protrude from the mounting surface 111a.

[0033] Specifically, first, the user attaches the holder main body 111 to the surface of their body using the attachment part 112. Next, the needle N is inserted through a through-hole formed in the cover member 114d of the support member 114, and the support member 114 is attached to the puncture tool M so that the needle N passes through the lumen of the cannula 113. Next, as shown in FIG. 4A, the puncture tool M is attached to the mounting surface 111a. Next, as shown in FIG. 4B, the biasing force of the biasing member provided in the puncture tool M ejects the support member 114 and the needle N in a direction in which the needle N and the cannula 113 protrude from the mounting surface 111a. Next, as shown in FIG. 4C, with the support member 114 attached to the mounting surface 111a, the puncture tool M including the needle N is removed from the mounting surface 111a. This leaves the cannula 113 in the living body.

[0034] Next, the liquid supply reuse unit 13 will be described. As shown in FIGS. 2 and 5, the liquid supply reuse unit 13 includes a drive mechanism 131 that drives components required for the liquid supply operation, a liquid supply amount detection unit 132 that detects the amount of liquid supplied by the liquid supply operation, a first communication unit 133 that communicates with the remote control 20, a first control unit 134 that controls the drive mechanism 131, the first communication unit 133, etc., and a first housing 135 that holds these components. In FIG. 5, the area surrounded by the dotted line X represents components that are attached to the liquid supply reuse unit 13, and the area surrounded by the dash-dotted line Y represents components that are attached to the disposable liquid supply unit 14. In FIG. 5, the first housing 135 is omitted for ease of understanding.

[0035] As shown in Figure 5, the drive mechanism 131 has a motor 136 with an output shaft that generates rotation using power from a battery 144 in the liquid delivery and disposal section 14, and a plurality of gears 137 that decelerate the rotation generated by the motor 136 and transmit it to the extrusion mechanism 143 in the liquid delivery and disposal section 14.

[0036] Motor 136 generates a driving force required to move slide portion 146 of extrusion mechanism 143 as rotational motion on the output shaft. In this embodiment, a stepping motor is used as motor 136. However, the motor is not limited to this as long as it can generate a driving force by rotation and has a size that can be mounted on portable medical solution administration device 100, and other motors such as a DC motor and an AC motor may also be used.

[0037] The plurality of gears 137 are used to transmit the rotational power generated by the motor 136 to the extrusion mechanism 143 that presses the drug solution storage unit 141. The configuration of the gears 137, such as the number of gears, the number of teeth, and the type of teeth, is not particularly limited as long as the plurality of gears 137 can transmit the torque from the motor 136 after reducing the speed to a set value.

[0038] The liquid delivery amount detection unit 132 has a rotary plate 132a and an optical sensor 132b having a transmitter and a receiver arranged to face each other with the rotary plate 132a interposed therebetween.

[0039] The rotating plate 132a has a plurality of generally fan-shaped portions, like the blades of a fan, spaced at regular intervals. When a light beam emitted from the light-emitting portion of the optical sensor 132b passes through a portion of the rotating plate 132a where no blades are provided, the light-receiving portion receives the light beam. Conversely, when the light beam from the optical sensor 132b is blocked by the blades of the rotating plate 132a, the light-receiving portion does not receive the light beam. Because the blades of the rotating plate 132a are spaced at regular intervals, the rotation speed of the motor 136 is detected based on the time interval (frequency) at which the light beams are received. Because the reduction ratio of the multiple gears 137 and the screw pitch of the extrusion mechanism 143 are fixed (not variable), the amount of insulin delivered can be detected by detecting the rotation speed of the output shaft of the motor 136.

[0040] In this embodiment, the amount of liquid sent is determined by detecting the amount of rotation of the motor 136 using the liquid sent amount detection unit 132, but the method for detecting the amount of liquid sent is not limited to this. For example, the amount of liquid sent can also be determined from a control signal sent to the motor 136. Also, although an optical sensor is used to detect the number of rotations, the sensor is not limited to an optical sensor as long as it can detect the amount of rotation of the motor.

[0041] 5, the first communication unit 133 includes electronic devices necessary for communication with the remote control 20. The remote control 20 is provided with a second communication unit 202, as will be described later, and is configured to be able to transmit and receive information to and from the first communication unit 133 of the liquid supply reuse unit 13 using BLE (Bluetooth Low Energy) communication, which is short-range wireless communication.

[0042] The first control unit 134 controls the operations of the motor 136, the first communication unit 133, the liquid delivery amount detection unit 132, etc. that constitute the drive mechanism 131. The first control unit 134 is configured by a known microcomputer including a CPU, RAM, ROM, etc.

[0043] 2, the first housing 135 has a top surface 135a that covers components such as the drive mechanism 131, the liquid feed amount detection unit 132, the first communication unit 133, and the first control unit 134, and a side wall 135b that forms a part of the outer periphery of the top surface 135a. The drive mechanism 131, the liquid feed amount detection unit 132, the first communication unit 133, and the first control unit 134 are each operably attached to the top surface 135a.

[0044] Next, we will explain the liquid delivery disposal unit 14. As shown in Figure 5, the liquid delivery disposal unit 14 has a medicinal solution storage unit 141 filled with insulin, a liquid delivery tube 142 that connects the lumen of connection port 114b provided in holder 11 with the medicinal solution storage unit 141, an extrusion mechanism 143 that is mechanically connected to drive mechanism 131 and extrudes insulin from the medicinal solution storage unit 141 into the liquid delivery tube 142, a battery 144 that supplies power to drive mechanism 131, etc., and a second housing 145 that holds these.

[0045] The medicinal liquid storage section 141 has a cylindrical shape. A liquid supply tube 142 is connected to one end of the medicinal liquid storage section 141. An opening 141a is formed at the other end of the medicinal liquid storage section 141. A slide section 146 of an extrusion mechanism 143 (described later) is inserted into the medicinal liquid storage section 141 through the opening 141a, and insulin is stored in a space partitioned by the medicinal liquid storage section 141 and the slide section 146. The medicinal liquid storage section 141 is connected to the connecting section 114g via the liquid supply tube 142 in a liquid-tight manner.

[0046] 6A and 6B, in this embodiment, liquid delivery tube 142 is configured by a thin metal tube with a sharp tip. As shown in Fig. 6A, when liquid delivery section 12 is connected to holder 11 while sliding, the sharp tip of liquid delivery tube 142 penetrates sealing member 114c of holder 11 and is inserted into the inner cavity of connection port 114b, as shown in Fig. 6B.

[0047] As shown in Figure 5, the extrusion mechanism 143 includes a slide portion 146 that can move back and forth within the internal space of the drug solution storage portion 141, a feed screw 147 that engages with a female thread portion 146d formed on the slide portion 146 to move the slide portion 146 back and forth, and a plurality of gears 137 that engage with the drive mechanism 131 and are connected to the feed screw 147.

[0048] As shown in Figure 5, the slide portion 146 has an extrusion member 146a that can move back and forth within the drug solution storage portion 141 while maintaining a sealing property to prevent insulin from leaking out to the side of the slide portion 146, a feed plate 146b on which a female thread portion 146d that engages with the feed screw 147 is formed, and a connecting plate 146c that connects the extrusion member 146a and the feed plate 146b.

[0049] The pushing member 146a is inserted through the opening 141a of the medicinal solution storage unit 141 to form a space for storing insulin in the internal space of the medicinal solution storage unit 141. The pushing member 146a is provided with an elastomer gasket or packing at the tip to prevent insulin from leaking from the boundary between the pushing member 146a and the cylindrical inner wall surface of the medicinal solution storage unit 141, and moves back and forth along the inner wall surface in the left-right direction in FIG. 5 while engaging with the cylindrical inner wall surface. The medicinal solution storage unit 141 and the pushing member 146a form a syringe-type reservoir, and the size (volume) of the storage space for storing insulin (the internal space of the medicinal solution storage unit 141) changes depending on the position of the pushing member 146a in the medicinal solution storage unit 141. The pushing member 146a is also called a plunger or a pusher.

[0050] When gear 137 constituting drive mechanism 131 rotates, feed screw 147 rotates. As feed screw 147 rotates, feed plate 146b moves along the helical axis of the male thread of feed screw 147. Pushing member 146a connected to feed plate 146b via connecting plate 146c moves within medicinal solution storage section 141 as feed plate 146b moves. When pushing member 146a moves in a direction to be pushed into medicinal solution storage section 141 (a direction in which the volume of the storage space decreases), insulin in the storage space formed by medicinal solution storage section 141 and pushing member 146a is sent to liquid delivery tube 142.

[0051] When the reused liquid supply unit 13 and the disposable liquid supply unit 14 are connected, the battery 144 is electrically connected to the motor 136, the liquid supply amount detection unit 132, the first communication unit 133, and the first control unit 134 in the reused liquid supply unit 13 to supply power to each unit. In this embodiment, the battery 144 is configured by connecting two batteries in series. However, the number of batteries and the connection method, such as series or parallel, are not particularly limited as long as power can be supplied to each unit. In this embodiment, the battery 144 is arranged in the disposable liquid supply unit 14, but the battery 144 can also be arranged in the reused liquid supply unit 13.

[0052] As shown in FIG. 2, the second housing 145 has a bottom surface 145a on which components such as the drug solution storage section 141, the liquid delivery tube 142, the extrusion mechanism 143, and the battery 144 are placed, and a side wall 145b that extends from the outer peripheral edge of the bottom surface 145a.

[0053] The second housing 145 is configured to be connectable to and detachable from the holder main body 111. Specifically, in this embodiment, the side wall 145b is formed with a first hook portion 145d that hooks into a through hole 111e formed in the holder main body 111, as shown in FIG. 2. When the second housing 145 is slid into the holder main body 111, the first hook portion 145d of the second housing 145 hooks into the through hole 111e of the holder main body 111. This brings the second housing 145 into a connected state with the holder main body 111.

[0054] In this embodiment, the second housing 145 is made of a resin part such as plastic, but as with the first housing 135, the material is not limited to this as long as it has a certain degree of strength.

[0055] Next, a description will be given of the remote control 20. As shown in Fig. 1, the remote control 20 has a remote control main body 201, a second communication unit 202 capable of wireless communication with the first communication unit 133, a second control unit 203 that controls the drug solution administration device 100 in an integrated manner, a monitor 204 provided on the remote control main body 201, a button 205 that can receive instructions from the user, and a battery 206 that supplies power to each unit of the remote control 20.

[0056] The remote control main body 201 is configured to be large enough for the user to hold in one hand, and is made of relatively lightweight resin parts such as plastic.

[0057] The second communication unit 202 includes electronic devices necessary for communication with the first communication unit 133 of the liquid delivery main body 10. In this embodiment, the second communication unit 202 is configured to transmit and receive information to and from the liquid delivery main body 10 using Bluetooth Low Energy (BLE) communication, which is a short-range wireless communication technology that enables communication with low power. However, the communication method is not limited to BLE as long as wireless communication with the liquid delivery main body 10 can be performed.

[0058] The second control unit 203 is configured by a known microcomputer including a CPU, RAM, ROM, etc. The CPU reads various programs stored in advance in the ROM into the RAM and executes them to control the liquid delivery operation. Note that the monitor 204, button 205, and battery 206 have the same configuration as known devices, so their description will be omitted.

[0059] The above has described the configuration of the chemical solution administration device 100. Next, the configuration of the protection member 30 according to this embodiment will be described.

[0060] (protective member 30) The protective member 30 is configured to be detachable from the medicinal solution administration device 100. Specifically, as shown in Fig. 7, the protective member 30 is attached to the holder main body 111 with the liquid delivery section 12 removed. In this way, the protective member 30 protects the holder main body 111. The configuration of the protective member 30 will be described below.

[0061] 7, 8A, and 8B, the protective member 30 has a flat portion 31 disposed opposite the mounting surface 111a of the holder main body portion 111 when attached to the holder main body portion 111, a second vertical wall portion 32 provided opposite the first vertical wall portion 111b, and a second hook portion 33 that hooks into the through hole 111e of the holder main body portion 111. As shown in FIG. 8A, the protective member 30 has a shape that opens toward the mounting surface 111a.

[0062] The flat surface portion 31 is configured to correspond to the shape of the mounting surface 111a of the holder main body portion 111, as shown in FIG.

[0063] The outer periphery of the flat portion 31 has a curved shape as shown in Fig. 7. A communication hole 34 for draining water is provided at the curved portion of the outer periphery of the flat portion 31, and communicates between the inside and outside of the space V defined by the holder main body 111, the flat portion 31, and the second vertical wall portion 32 when the protective member 30 is attached to the holder main body 111.

[0064] The communication holes 34 penetrate the protective member 30 in the thickness direction. Specifically, as shown in Fig. 7, a plurality of communication holes 34 are provided intermittently along the circumferential direction of the flat surface portion 31. This configuration improves the drainage of liquid that has accumulated in the space V defined by the holder main body portion 111, the flat surface portion 31, and the second vertical wall portion 32. Note that the location, number, pitch, etc. of the communication holes 34 are not particularly limited.

[0065] 8A and 8B, the second vertical wall portion 32 has a first surface 32A, a second surface 32B that is continuous and perpendicular to the first surface, a third surface 32C that is continuous and perpendicular to the second surface 32B, a fourth surface 32D that is continuous and perpendicular to the third surface 32C, a fifth surface 32E that is continuous and perpendicular to the fourth surface 32D, and a sixth surface 32F that is continuous and perpendicular to the fifth surface 32E. The first surface 32A is located a predetermined distance rearward from the leading end of the third surface 32C in the sliding direction. Each of the surfaces 32A, 32B, 32C, 32D, 32E, and 32F may be configured as a single flat surface, or may be configured as multiple surfaces with steps, as shown in FIG. 8A.

[0066] As described above, the protective member 30 has the flat portion 31 and the second vertical wall portion 32, and therefore covers the through-hole 111e and the support member 114. Therefore, the holder 11 can be suitably prevented from being caught on a hand or another member and coming off.

[0067] As shown in FIGS. 8A, 8B, 9, and 10, the first surface 32A of the second vertical wall portion 32 has an opening 32H formed therein. The opening 32H allows the connecting portion 114g to be seen when the connecting portion 114g is viewed from inside the protective member 30 along the mounting direction (arrow W in FIG. 7) of the protective member 30 when the protective member 30 is mounted on the holder main body 111. In this embodiment, the opening 32H is a recess formed in the first surface 32A. By providing the opening 32H in this manner, the connecting portion 114g is not brought into contact with other members and compressed, but is instead positioned independently. This improves drainage in the vicinity of the connecting portion 114g.

[0068] As shown in Fig. 10, when viewing the connecting portion 114g from inside the protective member 30, the opening 32H provided in the first surface 32A has a clearance of 1 mm or more from the outer periphery of the connecting portion 114g. Note that for ease of understanding, Fig. 10 omits the configuration of the support member 114 other than the connecting portion 114g. Specifically, the distance L1 from the right surface of the opening 32H to the connecting portion 114g is 1 mm or more, the distance L2 from the left surface of the opening 32H to the connecting portion 114g is 1 mm or more, and the distance L3 from the bottom surface of the opening 32H to the connecting portion 114g is 1 mm or more. Note that the numerical values ​​of the clearances are not limited to the above-mentioned values.

[0069] 8A, the second hook portion 33 is provided contiguous with the second vertical wall portion 32. Similar to the first hook portion 145d of the disposable liquid feeding unit 14, the second hook portion 33 is hooked into and fixed to the through-hole 111e of the holder main body portion 111 when the protective member 30 is slid relative to the holder 11. This results in the protective member 30 being attached to the holder main body portion 111. Note that the means for attaching the protective member 30 to the holder 11 is not limited to the above, as long as the holder 11 and the protective member 30 are detachable.

[0070] In this embodiment, the protective member 30 is made of a hard resin part such as plastic, but as long as it has a certain level of strength, the material is not limited to this, as with the first housing 135 and the second housing 145. By making the protective member 30 out of a hard resin part, the holder 11 can be physically protected.

[0071] Next, an example of how the medicinal solution administration device 100 is used will be described.

[0072] First, prior to using the medicinal solution administration device 100, the user attaches the holder 11 to the living body, and then, as described above, performs a procedure of placing the cannula 113 in the living body using the puncture tool M.

[0073] Furthermore, prior to using the medicinal solution administration device 100, the user connects and integrates the reusable liquid delivery unit 13 and the disposable liquid delivery unit 14 to form the liquid delivery unit 12. Then, the user operates the remote control 20 to issue a command for priming (first priming) to fill the liquid delivery tube 142 of the disposable liquid delivery unit 14 with insulin. Upon receiving the command from the remote control 20, the first control unit 134 operates the drive mechanism 131 to move the slide part 146 of the extrusion mechanism 143 by a predetermined amount, thereby delivering the insulin stored in the medicinal solution storage unit 141 to the liquid delivery tube 142 and filling the liquid delivery tube 142 with insulin.

[0074] Next, the liquid delivery section 12 is connected to the holder 11.

[0075] Next, the user operates remote control 20 to issue a command for priming (second priming) so that the lumen of cannula 113 is filled with insulin.

[0076] Next, the user operates the remote control 20 to select an appropriate delivery mode, such as a basal mode in which a constant amount of insulin is delivered over time, or a bolus mode in which the amount of insulin delivered per unit time is temporarily increased, and delivers the insulin into the body.

[0077] The above describes an example of how to use the medicinal liquid administration device 100. Next, an example of how to use the protective member 30 when taking a bath will be described.

[0078] First, the user operates the remote control 20 to stop the liquid delivery operation, and removes the liquid delivery unit 12 from the holder 11 in the liquid delivery main body 10 in the state shown in FIG. 1A.

[0079] 7, the protective member 30 is slid relative to the holder 11 to attach the protective member 30 to the holder main body 111. At this time, when the protective member 30 is moved a predetermined distance, the second hook portion 33 of the protective member 30 is hooked into the through hole 111e of the holder main body 111, and the protective member 30 is attached to the holder main body 111.

[0080] During bathing, liquid that accumulates in the space V defined by the holder main body 111, the flat surface 31, and the second vertical wall 32 is discharged to the outside through the communication holes 34. By providing the communication holes 34 around the periphery of the flat surface 31, liquid that has entered the space V through the communication holes 34 can be efficiently discharged regardless of the direction in which the holder main body 111 is attached.

[0081] After bathing, the protective member 30 is removed from the holder main body 111, and the liquid delivery unit 12 is attached to the holder main body 111. Before attaching the liquid delivery unit 12, the vicinity of the connecting unit 114g may be wiped clean with an alcohol swab or the like.

[0082] As described above, the protective member 30 of this embodiment is detachable from a drug solution administration device 100 having a drug solution storage section 141 for storing the drug solution and a liquid delivery section 12 including a drive mechanism 131 for generating a driving force for delivering the drug solution in the drug solution storage section 141 into a living body, a holder main body 111 to which the drug solution delivery section 12 is attached, a connecting section 114g that is liquid-tightly connected to the drug solution storage section 141 when the drug solution delivery section 12 is attached to the holder main body 111, and a cannula 113 that injects the drug solution delivered from the drug solution storage section 141 via the connecting section 114g into a living body. The protective member 30 is attached to the holder main body 111 with the liquid delivery unit 12 removed from the holder 11. When the protective member 30 is attached to the holder main body 111, an opening 32H is formed through which the connecting portion 114g is visible when the connecting portion 114g is viewed from the internal space of the protective member 30 along the attachment direction when the protective member 30 is attached to the holder 11. With the protective member 30 configured in this manner, the connecting portion 114g is not compressed by contact with other members, and is instead positioned independently from the protective member 30. This improves drainage near the connecting portion 114g. Furthermore, the protective member 30 does not apply a load to the connecting portion 114g, thereby reducing physical stress on the connecting portion 114g.

[0083] Moreover, the holder main body 111 includes a mounting surface 111a on which the liquid delivery unit 12 is placed, and a first vertical wall 111b that is provided around the mounting surface 111a and defines an accommodation space in which the liquid delivery unit 12 is accommodated. The protective member 30 includes a flat portion 31 that is disposed opposite the mounting surface 111a when attached to the holder main body 111, and a second vertical wall 32 that is provided opposite the first vertical wall 111b. The second vertical wall 32 has a first surface 32A that is perpendicular to the attachment direction and is formed at a position spaced a predetermined distance from the tip end in the attachment direction toward the base end. An opening 32H is formed in the first surface 32A, and when the connecting portion 114g is viewed from the internal space of the protective member 30, a clearance of 1 mm or more is provided between the opening 32H provided in the first surface 32A and the outer circumferential edge of the connecting portion 114g. According to the protective member 30 configured in this manner, the connecting portion 114g is more reliably disposed independent of the protective member 30, thereby more reliably improving the drainage performance in the vicinity of the connecting portion 114g. In addition, by providing a clearance, it is possible to prevent the protective member 30 from colliding with the connecting portion 114g when the protective member 30 is attached to the holder 11.

[0084] Furthermore, when the protective member 30 is attached to the holder main body 111, the protective member 30 has communication holes 34 that communicate between the inside and outside of the internal space thereof, and the communication holes 34 are provided along the outer periphery of the flat portion 31. With the protective member 30 configured in this manner, the drainage properties of the protective member 30 can be further improved.

[0085] Furthermore, a plurality of communication holes 34 are formed intermittently along the circumferential direction of the flat portion 31. According to the protective member 30 configured in this manner, the drainage performance of the protective member 30 can be further improved regardless of the attachment position or posture of the holder main body 111.

[0086] The protective member 30 according to the present invention has been described above through the embodiments, but the protective member 30 according to the present invention is not limited to the configuration described above, and various modifications can be made based on the description of the claims.

[0087] For example, in the above-described embodiment, the second vertical wall portion 32 has the first surface 32A and the second surface 32B. However, as shown in FIG. 11 , the second vertical wall portion 232 may not have the first surface 32A, thereby forming an opening 232H. Furthermore, as shown in FIG. 12 , the second vertical wall portion 332 may not have the first surface 32A or the second surface 32B. In other words, the internal space covered by the second vertical wall portion 332 is configured to form a single chamber. With this configuration, the connecting portion 114g is more reliably arranged independently, thereby more reliably improving drainage in the vicinity of the connecting portion 114g.

[0088] In the above-described embodiment, the medicinal liquid to be delivered is insulin, but the invention is not limited to this. For example, the invention can be used to deliver other medicinal liquids such as antibiotics, nutrients, painkillers, and hormones. [Explanation of symbols]

[0089] 1. Drug administration device, 10 liquid delivery main body, 100 drug administration device, 11 holder, 111 holder main body (mounting part), 111a placing surface, 111b 1st vertical wall section, 113 cannula, 114g connection part, 12 liquid delivery unit, 131 drive mechanism, 141 Chemical solution storage section, 30 protective member, 31, 231 plane part, 32, 232, 332 2nd vertical wall part, 32A 1st page, 32H, 232H opening, 34 Communication hole.

Claims

1. a liquid delivery unit including a liquid medicine storage unit that stores a liquid medicine and a drive mechanism that generates a drive force to deliver the liquid medicine in the liquid medicine storage unit into a living body; a holder including a mounting portion to which the liquid delivery portion is attached, a connecting portion that is liquid-tightly connected to the liquid delivery portion when the liquid delivery portion is attached to the mounting portion, and a cannula that injects the liquid delivery portion delivered from the liquid delivery portion through the connecting portion into the living body, the protective member is attached to the attachment portion in a state where the liquid delivery portion is detached from the holder, A protective member having an opening formed therein so that, when the protective member is attached to the attachment portion, the connecting portion can be seen when the connecting portion is viewed from the internal space of the protective member along the attachment direction when the protective member is attached to the holder.

2. the mounting portion includes a mounting surface on which the liquid delivery portion is placed, and a first vertical wall portion that is provided around the mounting surface and defines an accommodation space in which the liquid delivery portion is accommodated, The protective member is a flat surface portion that faces the placement surface when the device is attached to the attachment portion; and a second vertical wall portion provided opposite to the first vertical wall portion, the second vertical wall portion has a first surface that is perpendicular to the mounting direction and is formed at a position spaced a predetermined distance from a tip end in the mounting direction toward a base end, The opening is formed in the first surface, The protective member according to claim 1 , wherein when the connecting portion is viewed from the internal space of the protective member, the opening provided in the first surface has a clearance with respect to an outer circumferential edge of the connecting portion.

3. the mounting portion includes a mounting surface on which the liquid delivery portion is placed, and a first vertical wall portion that is provided around the mounting surface and defines an accommodation space in which the liquid delivery portion is accommodated, The protective member is a flat surface portion that faces the placement surface when the device is attached to the attachment portion; and a second vertical wall portion provided opposite to the first vertical wall portion, The protection member according to claim 1 , wherein the internal space covered by the second vertical wall portion is configured to form a single chamber.

4. a communication hole that communicates the inside and outside of the internal space of the protection member when the protection member is attached to the attachment portion; The protective member according to claim 2 or 3, wherein the communication hole is provided along an outer periphery of the flat portion.

5. The protection member according to claim 4 , wherein a plurality of the communication holes are formed intermittently along the circumferential direction of the flat surface portion.

Images