JP2017136271A - Protective member and medical liquid administration device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide means capable of favorably preventing an injection part from being removed and preventing a connection part from getting wet by liquid.SOLUTION: The medical liquid administration device includes: a liquid delivery part including a medical liquid storage part for storing a medical liquid, and a driving mechanism for generating driving force for delivering the medical liquid in the medical liquid storage part into a living body; a mounting part 111 on which the liquid delivery part is mounted; a coupling part that is liquid-tightly coupled with the medical liquid storage part, when the liquid delivery part is mounted on the mounting part 111; and an injection part 11 including a canula for injecting the medical liquid delivered from the medical liquid storage part via the coupling part, into the living body. A protective member 30 detachably attached to the medical liquid administration device, is mounted on the mounting part 111 in a state where the liquid delivery part is removed, so as to protect the mounting part and retain the coupling part in the liquid-tight state.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a protective member and a drug solution administration device.

  2. Description of the Related Art Conventionally, as a device for administering a drug solution such as insulin, a portable drug solution administration device that administers a drug solution over time while attached to the skin of a patient or subject to be administered is known.

  In general, a chemical solution administration device is detachable from a liquid supply unit having a chemical solution storage unit for storing a chemical solution and a driving mechanism for generating a driving force for supplying the chemical solution in the chemical solution storage unit into a living body. And an injection part provided with a cannula or the like for injecting a drug solution into a living body (see, for example, Patent Document 1 below).

  In the liquid medicine administration device configured as described above, when the device comes into contact with the liquid, for example, at the time of bathing, since the liquid feeding part includes an electrical mechanism, the liquid feeding part can be removed from the injection part. Has been done.

Japanese Patent No. 5172841

  However, when bathing or the like is performed with the liquid feeding part removed from the injection part, the following problems are raised.

  First, the injection part attached to the living body is intended by bringing a hand or other member into contact with a mechanical fitting part (protrusion or hole) with the liquid feeding part provided in the injection part. There is a risk of slipping off.

  Secondly, by removing the liquid feeding part from the injection part, when the liquid feeding part is attached to the injection part, a connection part (connection port) that is liquid-tightly connected to the chemical solution storage part is exposed and connected. There is a possibility that the part gets wet with liquid and becomes unsanitary.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide means capable of suitably preventing the injection portion from coming off and the connection portion from being wetted by liquid.

  The protective member according to the present invention is equipped with a liquid supply part that includes a chemical liquid storage part that stores chemical liquid, a drive mechanism that generates a driving force for supplying the chemical liquid in the chemical liquid storage part into the living body, and the liquid supply part A mounting part that is liquid-tightly connected to the chemical liquid storage part when the liquid supply part is attached to the mounting part, and a liquid is supplied from the chemical liquid storage part via the connection part. And a protective member detachably attached to the chemical liquid administration device. The protective member includes an injection portion including a cannula for injecting the chemical liquid into the living body. The protective member is attached to the attachment part with the liquid feeding part removed, thereby protecting the attachment part and maintaining the connection part in a liquid-tight state.

  The liquid medicine administration device according to the present invention includes a liquid medicine storage section that stores a liquid medicine, a liquid supply section that includes a driving mechanism that generates a driving force for sending the liquid medicine in the liquid medicine storage section into a living body, and the liquid supply section. A mounting part to which a part is attached, a connection part that is liquid-tightly connected to the chemical solution storage part when the liquid feeding part is attached to the attachment part, and from the chemical solution storage part through the connection part An injecting unit including a cannula for injecting the supplied medicinal solution into the living body, and the mounting unit that is detachable from the medicinal solution administering device and in which the liquid feeding unit is removed And a protective member that protects the mounting portion and maintains the connecting portion in a liquid-tight state.

  According to the protection member and the drug solution administration device according to the present invention, the attachment member is protected by attaching the protection member to the attachment portion. For this reason, the mechanical fitting part with the liquid feeding part provided in a mounting part can be protected, and it can prevent suitably that an injection | pouring part is caught by a hand or another member and remove | deviates. Further, the connecting member is maintained in a liquid-tight state by mounting the protective member on the mounting portion. For this reason, it can prevent suitably that a connection part gets wet with a liquid. From the above, it is possible to provide means that can suitably prevent the injection part from coming off and the connection part from being wetted by the liquid.

It is the schematic which shows the chemical | medical solution administration device which concerns on embodiment, Comprising: FIG. 1 (A) shows a chemical | medical solution administration apparatus, FIG.1 (B) shows the state with which the protection member was mounted | worn with the injection part. It is a disassembled perspective view which shows the liquid feeding main-body part of the chemical | medical solution administration apparatus which concerns on embodiment. It is a top view which shows the injection | pouring part of the chemical | medical solution administration apparatus which concerns on embodiment. 4A and 4B are enlarged cross-sectional views taken along line 4-4 of FIG. 3, in which FIG. 4A shows a state before the cannula is introduced into the living body, and FIG. FIG. 4 (C) is a diagram showing a state where the puncture tool is removed and the cannula is placed in the living body. FIG. 5 (A) is a schematic plan view showing the structure of each part in the liquid delivery main body part of the drug solution administration device according to the embodiment, and FIG. 5 (B) is an enlarged view of the drive mechanism in FIG. 5 (A). 6A and 6B are cross-sectional views taken along line 6-6 of FIG. 5, in which FIG. 6A shows a state before the injection portion and the liquid supply portion are connected, and FIG. 6B shows the injection portion and the liquid supply portion. It is a figure which shows the state which connected the part. It is a perspective view which shows the mode before attaching a protection member to an injection | pouring part. FIG. 8A is a perspective view showing the protective member when viewed from the arrow A in FIG. 7, and FIG. 8B is a bottom view of the protective member. FIG. 9A is a view showing a state before the protective member is attached to the injection portion, and FIG. 9B is a view showing a state where the protective member is attached to the injection portion. It is a perspective view which shows the protection member which concerns on a modification. It is a perspective view which shows the mode before mounting | wearing the injection | pouring part with the protection member which concerns on a modification. FIG. 12A is a view corresponding to FIG. 8A showing the protection member according to the modification, and FIG. 12B is a bottom view of the protection member according to the modification.

  Embodiments according to the present invention will be described below with reference to the accompanying drawings. The size and ratio of each member in the drawings are exaggerated for convenience of explanation and may be different from the actual size and ratio.

  1-6 is a figure where it uses for description of a structure of each part of the chemical | medical solution administration apparatus 100 which concerns on this embodiment. 7-9 is a figure where it uses for description of a structure of the protection member 30 which concerns on this embodiment.

  As shown in FIG. 1, the drug solution administration device 1 according to the present embodiment includes a drug solution administration device 100 that administers a drug solution into a living body, and a protective member 30 that can be attached to and detached from the drug solution administration device 100. Hereinafter, each structure is demonstrated in order of the chemical | medical solution administration apparatus 100 and the protection member 30. FIG.

(Chemical solution administration device 100)
The drug solution administration device 100 according to the present embodiment is configured as a portable insulin administration device that delivers insulin as a drug solution into the living body of a diabetic patient who is a user. In the following description, the drug solution administration device 100 is also referred to as an insulin administration device 100.

  As shown in FIG. 1 (A), an insulin administration device 100 performs a liquid feeding main body 10 that performs a liquid feeding operation for feeding insulin, which is a drug solution, into a living body, and various operations on the liquid feeding main body 10. A remote controller 20 for giving instructions.

  As shown in FIG. 2, the liquid feeding main body unit 10 includes a cannula 113 or the like placed in the user's living body, and drives the injection unit 11 attached to the user's living body and members necessary for the liquid feeding operation. A liquid supply reuse unit 13 including a drive mechanism 131 that generates a driving force, and a liquid supply unit 12 including a liquid supply disposable unit 14 including a drug solution storage unit 141 and the like filled with insulin.

  The injection unit 11 and the liquid feeding unit 12 are configured to be connected and separated. The user separates the medicinal solution storage unit 141 filled with insulin and the liquid feeding unit 12 including an electrical mechanism from the injecting unit 11 while the injecting unit 11 is attached to the living body, for example, when taking a bath. By performing this operation, it is possible to prevent the insulin in the drug solution storage unit 141 from being heated and the liquid from adhering to the electrical mechanism in the liquid feeding unit 12 to get wet.

  Moreover, the liquid feeding reuse part 13 and the liquid feeding disposable part 14 are comprised so that connection separation is possible. When the insulin or the like in the drug solution storage unit 141 has been used up after a predetermined period of time, the liquid supply reuse unit 13 and the liquid supply disposable unit 14 are separated, and the liquid supply disposable unit 14 is made disposable (disposable) to be new. Can be exchanged for something. On the other hand, the liquid supply reuse unit 13 is mounted with relatively expensive components such as a motor 136 and a plurality of gears 137, which will be described later, which are less frequently replaced than those mounted on the liquid supply disposable unit 14. . In this way, a component member discarded after use for a predetermined period and a relatively expensive component member are mounted in different housings, respectively, and the relatively expensive component member is mounted in the liquid feeding reuse unit 13 and can be reused. By doing so, it is possible to reduce the manufacturing cost of the apparatus and the cost associated with use. Each configuration will be described below.

  First, the injection part 11 will be described. As shown in FIG. 2 and the like, the injection part 11 includes an injection main body part (corresponding to a mounting part, also referred to as a cradle) 111, a pasting part 112 for attaching the injection main body part 111 to a living body of a user, and an injection main body part. 111 and a cannula 113 that is placed in the living body and a support member 114 that is placed on the injection main body 111 and supports the cannula 113.

  As shown in FIG. 2, the liquid feeding unit 12 is attached to the injection main body 111. The injection main body 111 includes a flat plate-like placement surface 111a on which the liquid feeding portion 12 is placed, and a first vertical wall portion 111b that rises a part of the outer peripheral edge of the placement surface 111a. Yes. As shown in FIGS. 4A and 4B, an insertion hole 111c through which the cannula 113 can be inserted is formed in the mounting surface 111a.

  Further, as shown in FIG. 2, the first vertical wall portion 111b has an opposing surface as an engaging portion for maintaining a mechanically connected state with a second housing 145 of a liquid delivery disposable portion 14 to be described later. A protrusion 111d that protrudes toward the surface and a through hole 111e are formed. When the second housing 145 of the liquid delivery disposable part 14 is slid and connected to the injection main body part 111 in the surface direction of the mounting surface 111a, the protrusion 111d is formed in a groove 145c formed outside the second housing 145. Mating. Further, the first hooking portion 145d formed in the second housing 145 is hooked in the through hole 111e. Note that the shape of the engaging portion is not limited to the above shape as long as the injection main body portion 111 and the second housing 145 of the liquid delivery disposable portion 14 can be connected and separated.

  Further, as shown in FIG. 3, the first vertical wall portion 111b is provided on three sides when viewed from above, and is not provided on one side. Since the first vertical wall portion 111b is configured as described above, the liquid feeding portion 12 or the protection member 30 is slid in the surface direction of the placement surface 111a with respect to the injection main body portion 111, as will be described later. Can be attached. Furthermore, the first vertical wall portion 111b defines a storage space in which the liquid feeding unit 12 or the protection member 30 is stored.

  As shown in FIG. 3 and FIGS. 4A to 4C, the pasting portion 112 is configured by a substantially rectangular sheet-like member. Adhesiveness of the sticking part 112 is added to the surface opposite to the surface on which the first vertical wall portion 111b stands on the mounting surface 111a of the injection main body 111. Using the adhesiveness of the sticking part 112, the injection part 11 can be stuck to the living body of the user. Note that the sticking part 112 is inadvertently stuck to the surface of the sticking part 112 that has an adhesive property to be stuck to the living body by using removable release paper that covers and protects the sticking part 112. May be prevented.

  The cannula 113 is punctured into the living body and used to introduce insulin from the drug solution storage unit 141 into the living body. As shown in FIG. 4A, the cannula 113 has a cylindrical portion and a truncated cone-shaped portion that is formed continuously with the cylindrical portion, and the cylindrical portion and the truncated cone-shaped portion. Have a continuous lumen through which insulin circulates. The cannula 113 is configured to have a so-called funnel-like shape by having the above-described shape.

  As shown in FIG. 4, the support member 114 includes a base 114 a that supports the cannula 113, a connection port 114 b that includes a lumen into which the liquid feeding pipe 142 (see FIG. 6) of the liquid feeding disposable part 14 is inserted, A cap 114c attached so as to cover the connection port 114b; a lid member 114d attached to the upper surface of the base 114a (the surface opposite to the mounting surface on the injection main body 111); the base 114a and the lid member 114d; And a seal member 114e provided between the two. The connection port 114b and the cap 114c constitute a connection part 114g that is liquid-tightly connected to a chemical solution storage part 141 to be described later when the liquid feeding part 12 is mounted on the injection main body part 111.

  The base 114a is a part that becomes a base of the support member 114, and is configured in a substantially cylindrical shape in the present embodiment. As shown in FIG. 4C or the like, the base 114a includes an internal space 114f in which the cannula 113 is installed. The internal space 114f has a funnel shape in accordance with the shape of the cannula 113 so that the cannula 113 can be supported. It is configured to provide.

  As shown in FIG. 4A and the like, the connection port 114b extends in a direction intersecting the cylindrical axis of the cannula 113 at the base 114a. The lumen of the connection port 114b communicates with the internal space 114f of the base 114a.

  The cap 114c is formed of a material that can insert a liquid feeding pipe 142 of the liquid feeding disposable section 14 to be described later, and can keep liquid tight between the liquid feeding pipe 142 and the connection port 114b. The material is preferably rubber.

  As shown in FIG. 4C, the lid member 114d has a function of pressing the seal member 114e. A through hole into which a needle N of a puncture tool M, which will be described later, can be inserted is formed in the lid member 114d coaxially with the axial direction of the cannula 113.

  The seal member 114e is configured so that the needle N of the puncture device M can be inserted, and prevents insulin from leaking out from the through hole of the lid member 114d after the puncture device M is removed. Examples of the material of the seal member 114e include rubber. In addition, the puncture tool M shown to FIG. 4 (A), (B) is the schematic diagram which abbreviate | omitted the detailed structure.

  The indwelling of the cannula 113 is supported, for example, in a direction in which the needle N and the cannula 113 protrude from the placement surface 111a, and the needle N that can be inserted into the lumen of the cannula 113 supported by the support member 114. It can be performed by a puncture device M including a biasing member (not shown) that applies a biasing force to the member 114 and the needle N.

  Specifically, first, the user attaches the injection main body 111 to the body surface of the user using the attaching portion 112. Next, the needle N is inserted from the through hole formed in the lid member 114 d 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 on the placement surface 111a. Next, as shown in FIG. 4B, the support member 114 and the needle N are moved toward the direction in which the needle N and the cannula 113 protrude from the placement surface 111a by the urging force of the urging member included in the puncture tool M. Eject. Next, as shown in FIG. 4C, with the support member 114 attached to the placement surface 111a, the puncture tool M including the needle N is removed from the placement surface 111a. As a result, the cannula 113 is placed in the living body.

  Next, the liquid feeding reuse unit 13 will be described. As shown in FIG. 2 and FIG. 5 (A), the liquid feed reuse unit 13 determines the amount of liquid fed by the drive mechanism 131 that drives the members necessary for performing the liquid feed operation, and the liquid feed operation. A liquid feeding amount detection unit 132 to detect, a first communication unit 133 that communicates with the remote controller 20, a first control unit 134 that controls the drive mechanism 131, the first communication unit 133, and the like, and a first housing that holds them 135. In FIG. 5A, the part surrounded by a dotted line X represents a part attached to the liquid feeding reuse part 13, and the part surrounded by a one-dot chain line Y represents a part attached to the liquid feeding disposable part 14. . In FIG. 5A, the first housing 135 is omitted for easy understanding.

  As shown in FIGS. 5A and 5B, the drive mechanism 131 includes a motor 136 having an output shaft that causes rotation by the electric power from the battery 144 of the liquid delivery disposable unit 14, and rotation generated by the motor 136. And a plurality of gears 137 that transmit the speed to the push-out mechanism 143 of the liquid delivery disposable part 14.

  The motor 136 generates a driving force necessary for moving the slide portion 146 of the push-out mechanism 143 on the output shaft as a rotational motion. The motor 136 uses a stepping motor in this embodiment. However, the present invention is not limited to this as long as it can generate a driving force by rotation and can be mounted on the portable insulin administration device 100. For example, a DC motor or an AC motor may be used in addition to the stepping motor. Good.

  The plurality of gears 137 are used to transmit the rotational power generated from the motor 136 to the extrusion mechanism 143 that presses the chemical solution storage unit 141. In the present embodiment, as shown in FIG. 5B, the plurality of gears 137 include a first gear 137a connected to the motor 136, a second gear 137b that meshes with an adjacent gear, a third gear 137c, and a fourth gear. A gear 137d.

  The first gear 137a includes one type of tooth that meshes with an adjacent gear. In contrast, the second gear 137b, the third gear 137c, and the fourth gear 137d are provided with two types of teeth that mesh with adjacent gears in the axial direction in which the gear rotates.

  The second gear 137b is disposed adjacent to the first gear 137a and the third gear 137c in the direction intersecting the rotation axis of the first gear 137a (the vertical direction in FIGS. 5A and 5B). The second gear 137b includes teeth 137e that mesh with the teeth of the first gear 137a and teeth 137f that mesh with the teeth 137g of the third gear 137c. The tooth 137e has a larger diameter than the tooth 137f.

  The third gear 137c is disposed adjacent to the second gear 137b and the fourth gear 137d in the direction intersecting the rotation axis of the first gear 137a (the vertical direction in FIGS. 5A and 5B). The third gear 137c includes teeth 137g that mesh with the teeth 137f of the second gear 137b and teeth 137h that mesh with the teeth 137i of the fourth gear 137d. The tooth 137g has a diameter larger than that of the tooth 137h.

  The fourth gear 137d is disposed adjacent to the third gear 137c and the fifth gear 148 of the liquid delivery disposable unit 14 in the direction intersecting the rotation axis of the first gear 137a (the vertical direction in FIG. 5). The fourth gear 137d has teeth 137i that mesh with the teeth 137h of the third gear, and teeth 137j that mesh with the teeth of the fifth gear 148 that constitutes the push-out mechanism 143 of the liquid delivery disposable unit 14 described later. The tooth 137i has a diameter larger than that of the tooth 137j.

  The first gear 137a, the second gear 137b, the third gear 137c, and the fourth gear 137d are constituted by spur gears. However, the present invention is not limited to this as long as the power from the rotation from the motor 136 can be transmitted to the extrusion mechanism 143. Further, as long as the plurality of gears 137 can transmit the torque from the motor 136 by decelerating to a set value, the gear configuration such as the number of gears, the number of teeth, and the type of teeth is not limited to the above. In the present embodiment, the rotation direction of the input gear corresponding to the first gear 137a and the rotation direction of the output gear corresponding to the fifth gear 148 may be the same or different.

  The liquid feeding amount detection unit 132 includes a rotating plate 132a provided on the motor 136 side of the first gear 137a, and an optical sensor 132b including a transmitting unit and a receiving unit disposed so as to face each other with the rotating plate 132a interposed therebetween. And having.

  The rotating plate 132a is provided with a plurality of substantially fan-like shapes such as fan blades at regular angular intervals in the circumferential direction of the first gear 137a. When the light beam emitted from the light emitting unit of the optical sensor 132b passes through the portion of the rotating plate 132a where the blade shape is not provided, the light receiving unit receives the light beam. Conversely, when the light beam from the optical sensor 132b is blocked by the blade shape of the rotating plate 132a, the light receiving unit does not receive the light beam. Since the blade shape of the rotating plate 132a is provided at a constant interval, the number of rotations of the motor 136 is detected based on the time interval (frequency) at which the light beam is received. Since the reduction ratios of the plurality of 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. it can.

  In the present embodiment, the liquid feed amount detection unit 132 detects the rotation amount of the motor 136 to obtain the liquid feed amount, but the method of detecting the liquid feed amount is not limited to this. For example, it is also possible to obtain the liquid feeding amount from a control signal sent to the motor 136. Moreover, although the optical sensor is used for the detection of rotation speed, if the rotation amount of a motor can be detected, it will not be limited to an optical sensor.

  As shown in FIG. 5A, the first communication unit 133 includes electronic devices necessary for communication with the remote controller 20. As will be described later, the remote controller 20 is provided with a second communication unit 202, which communicates information with the first communication unit 133 of the liquid-feed reuse unit 13 using BLE (Bluetooth Low Energy) communication which is short-range wireless communication. It is comprised so that transmission / reception can be performed.

  The first control unit 134 controls operations of the motor 136, the first communication unit 133, the liquid feeding amount detection unit 132, and the like that configure the drive mechanism 131. The first control unit 134 is configured by a known microcomputer including a CPU, RAM, ROM, and the like.

  As shown in FIG. 2, the first housing 135 includes an upper surface 135 a that covers the configuration of the drive mechanism 131, the liquid feeding amount detection unit 132, the first communication unit 133, the first control unit 134, and the outer peripheral edge of the upper surface 135 a. And a side wall 135b partially raised. A drive mechanism 131, a liquid feeding amount detection unit 132, a first communication unit 133, and a first control unit 134 are operatively attached to the upper surface 135a.

  Moreover, the 1st housing 135 has a convex part (not shown) which protrudes inward from the inner surface of the side wall 135b as a structure which can connect and separate the liquid feeding reuse part 13 with the liquid feeding disposable part 14. As shown in FIG. In the present embodiment, the first housing 135 is made of resin parts such as plastic, but is not limited thereto as long as it has a certain degree of strength.

  Next, the liquid delivery disposable part 14 will be described. As shown in FIG. 5 (A), the liquid delivery disposable part 14 is a liquid delivery pipe that communicates the drug solution storage part 141 filled with insulin with the lumen of the connection port 114b provided in the injection part 11 and the drug solution storage part 141. 142, an extruding mechanism 143 that is mechanically connected to the driving mechanism 131 and pushes the insulin in the drug solution storage unit 141 to the liquid feeding tube 142, a battery 144 that supplies electric power to the driving mechanism 131 and the like, and a first holding the same. 2 housings 145.

  The chemical solution storage unit 141 has a cylindrical shape. A liquid feeding pipe 142 is connected to one end of the chemical liquid storage unit 141. An opening 141 a is formed at the other end of the chemical solution storage unit 141. A slide part 146 of an extrusion mechanism 143, which will be described later, is inserted into the drug solution storage part 141 from the opening 141a, and insulin is stored in a space partitioned by the drug solution storage part 141 and the slide part 146. The chemical solution storage unit 141 is liquid-tightly connected to the connection unit 114 g via the liquid feeding pipe 142.

  As shown in FIGS. 6A and 6B, in the present embodiment, the liquid feeding tube 142 is constituted by a metal thin tube having a sharp tip shape. As shown in FIG. 6 (A), when the liquid feeding section 12 is connected to the injection section 11 while being slid, the sharp tip of the liquid feeding pipe 142 is connected to the injection section 11 as shown in FIG. 6 (B). It penetrates the cap 114c and is inserted into the lumen of the connection port 114b.

  As shown in FIG. 5 (A), the push-out mechanism 143 meshes with the slide part 146 that can move forward and backward in the internal space of the chemical solution storage part 141 and the female screw part 146d formed on the slide part 146, thereby causing the slide part 146 to move. A feed screw 147 that moves forward and backward, and a fifth gear 148 that meshes with the fourth gear 137 d of the drive mechanism 131 and is connected to the feed screw 147 are provided.

  As shown in FIG. 5A, the slide portion 146 includes an extruding member 146a that can move forward and backward in the drug solution storage portion 141 while maintaining a sealing property so that insulin does not leak to the slide portion 146 side, and a feed screw 147. A feed plate 146b formed with an internal thread portion 146d that meshes with the connecting member 146c, and a connecting plate 146c that connects the push member 146a and the feed plate 146b.

  The pushing member 146a is inserted from the opening 141a of the drug solution storage part 141 in order to form a space for storing insulin in the internal space of the drug solution storage part 141. The pushing member 146a is fitted to the cylindrical inner wall surface so that insulin does not leak out from the boundary between the pushing member 146a and the cylindrical inner wall surface of the drug solution storage portion 141, and the inner wall surface is shown in FIG. Move forward and backward in the left and right direction. Depending on the position of the pushing member 146a in the drug solution storage part 141, the size (volume) of the accommodation space for storing insulin (the internal space of the drug solution storage part 141) changes. The pushing member 146a is sometimes called a pusher or a pusher.

  The feed plate 146b is configured by forming a hole in the plate shape and forming a female screw portion 146d that meshes with the male screw of the feed screw 147 in the hole.

  The connecting plate 146c connects the push member 146a and the feed plate 146b using two plates. However, the shape of the connection plate 146c is not limited to this as long as the push member 146a and the feed plate 146b can be connected and operated together. For example, the connecting plate 146c may be configured to have a hollow shape that fits into the cylindrical inner wall surface of the chemical solution storage unit 141 in addition to the above.

  The feed screw 147 has a male screw shape of a general screw, and a part of the feed screw 147 is engaged with the female screw portion 146d of the feed plate 146b.

  The fifth gear 148 is disposed in the second housing 145 at a position that meshes with the fourth gear 137d in a state where the liquid feeding reuse portion 13 and the liquid feeding disposable portion 14 are connected. Further, one end of a feed screw 147 is fixed to the rotation center (rotation shaft) of the fifth gear 148.

  The feed screw 147 and the fifth gear 148 are rotatably attached to the second housing 145.

  When the fifth gear 148 rotates with the rotation of the fourth gear 137d constituting the drive mechanism 131, the feed screw 147 rotates. As the feed screw 147 rotates, the feed plate 146b moves along the spiral axis of the male screw of the feed screw 147. The pushing member 146a connected to the feed plate 146b via the connecting plate 146c moves in the chemical solution storage unit 141 as the feed plate 146b moves. When the extruding member 146a moves in the direction in which the extruding member 146a is pushed into the medicinal solution storage unit 141 (the direction in which the volume of the accommodating space decreases), insulin in the accommodating space formed by the medicinal solution storing unit 141 and the extruding member 146a enters the liquid feeding tube 142. The liquid is sent.

  When the battery 144 is connected to the liquid feeding reuse unit 13 and the liquid feeding disposable unit 14, the motor 136, the liquid feeding amount detection unit 132, the first communication unit 133, and the first control unit 134 in the liquid feeding reuse unit 13 are connected. Are electrically connected to each other to supply power. In the present 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.

  As shown in FIG. 2, the second housing 145 has a bottom surface 145 a on which components such as a chemical solution storage unit 141, a liquid feeding pipe 142, an extrusion mechanism 143, and a battery 144 are placed, and an outer peripheral edge portion of the bottom surface 145 a. And a side wall 145b.

  The second housing 145 is configured to be connected to and separated from the injection main body 111. Specifically, in the present embodiment, the side wall 145b has a groove 145c that can be fitted to the protrusion 111d formed on the injection main body 111 and a through hole formed in the injection main body 111 as shown in FIG. A first hooking portion 145d that is hooked on 111e is formed. When the second housing 145 is slid to the injection main body 111, the projection 111 d of the injection main body 111 and the groove 145 c of the second housing 145 are fitted, and the through hole 111 e of the injection main body 111 is inserted into the through hole 111 e of the second housing 145. The first hooking part 145d is hooked. As a result, the second housing 145 is connected to the injection main body 111.

  The second housing 145 has a concave portion (not shown) that meshes with a convex portion provided on the side wall 135 b of the first housing 135, so that the second housing 145 can be connected to and separated from the first housing 135. By connecting the first housing 135 and the second housing 145, the drive mechanism 131 mounted on the first housing 135 and the push-out mechanism 143 mounted on the second housing 145 are mechanically connected. In addition, the motor 136, the liquid supply amount detection unit 132, the first communication unit 133, and the first control unit 134 mounted on the first housing 135 are electrically connected to the battery 144 mounted on the second housing 145. .

  In the present embodiment, the second housing 145 is made of resin parts such as plastic, but the material is not limited to this as long as the first housing 135 has a certain degree of strength.

  Next, the remote controller 20 will be described. As shown in FIG. 1, the remote controller 20 includes a remote controller body 201, a second communication unit 202 that can wirelessly communicate with the first communication unit 133, and a second control unit 203 that controls the insulin administration device 100 in an integrated manner. The remote control main body 201 has a monitor 204, a button 205 that can accept instructions from the user, and a battery 206 that supplies power to each part of the remote control 20.

  The remote control main body 201 is configured to have a size that can be held by a user with one hand, and is configured by a relatively lightweight resin component such as plastic.

  The second communication unit 202 includes an electronic device necessary for communication with the first communication unit 133 of the liquid feeding main body unit 10. The second communication unit 202 uses the BLE (Bluetooth Low Energy) communication, which is a short-range wireless communication technology capable of performing communication with low power in the present embodiment, to exchange information with the liquid feeding main body unit 10. It is configured to transmit and receive. However, the communication method is not limited to BLE as long as wireless communication can be performed with the liquid feeding main body unit 10.

  The second control unit 203 is configured by a known microcomputer including a CPU, RAM, ROM, and the like. The CPU reads out and executes various programs stored in advance in the ROM, thereby controlling the liquid feeding operation. Note that the monitor 204, the button 205, and the battery 206 have the same configuration as that of a known one, and thus the description thereof is omitted.

  The configuration of the drug solution administration device 100 has been described above. Next, the configuration of the protection member 30 according to the present embodiment will be described.

(Protective member 30)
The protection member 30 is configured to be detachable from the drug solution administration device 100. Specifically, as shown in FIG. 7, the protection member 30 is attached to the injection main body 111 from which the liquid feeding unit 12 has been removed. Thereby, the protection member 30 protects the injection main body 111 and maintains the connecting portion 114g in a liquid-tight state. Hereinafter, the configuration of the protection member 30 will be described.

  As shown in FIGS. 7 and 8, the protective member 30 includes a planar portion 31 disposed opposite to the placement surface 111 a of the injection main body 111 and the first vertical portion when the protective member 30 is attached to the injection main body 111. It has the 2nd vertical wall part 32 provided facing the wall part 111b, and the 2nd hook part 33 (equivalent to a fixing | fixed part) hooked in the through-hole 111e of the injection | pouring main body part 111. FIG. As shown in FIG. 8A, the protection member 30 has a shape that opens toward the placement surface 111a.

  As shown in FIG. 7, the flat surface portion 31 is configured to correspond to the shape of the mounting surface 111 a of the injection main body portion 111. The planar portion 31 is configured to cover the first vertical wall portion 111b of the injection main body portion 111 except for a part in a top view in FIG. In addition, the plane part 31 may be comprised so that the whole 1st vertical wall part 111b of the injection | pouring main body part 111 may be covered by the top view in FIG.1 (B).

  Further, as shown in FIGS. 7 and 8, the flat surface portion 31 is partitioned by the injection main body portion 111, the flat surface portion 31, and the second vertical wall portion 32 in a state where the protective member 30 is attached to the injection main body portion 111. A drain hole (corresponding to a hole) 34 that communicates the inside and outside of the space V is provided (see FIG. 9B). Specifically, the drain hole 34 is provided in the flat part 31 and penetrates along the thickness direction. As shown in FIG. 8B, the water drain hole 34 is formed at a position adjacent to the second vertical wall portion 32 on the inner side of the second vertical wall portion 32 in the plane portion 31. In addition, as shown in FIG.8 (B), it is preferable that the drain hole 34 is provided in the corner part of the area | region divided by the 2nd vertical wall part 32 from a drainage viewpoint.

  By forming the drain hole 34 in the flat surface portion 31 in this way, the liquid accumulated in the space V partitioned by the injection main body portion 111, the flat surface portion 31, and the second vertical wall portion 32 at the time of bathing, After bathing, the injection part 11 to which the protection member 30 is attached can be discharged to the outside by tilting the injection part 11 by a predetermined angle.

  As shown in FIG. 8A, the second vertical wall portion 32 includes a first surface 32A, a second surface 32B that is orthogonal to the first surface, and a second surface 32B that is orthogonal to the second surface 32B. A third surface 32C, a fourth surface 32D continuous perpendicular to the third surface 32C, a fifth surface 32E continuous orthogonal to the fourth surface 32D, and a sixth surface orthogonal to the fifth surface 32E 32F. The first surface 32A is provided on the rear side by a predetermined distance from the tip in the sliding direction with respect to the third surface 32C, corresponding to the position of the connecting portion 114g.

  Thus, since the protection member 30 includes the flat surface portion 31 and the second vertical wall portion 32, the protection member 30 covers the protrusion 111d, the through hole 111e, the support member 114, and the like of the injection portion 11. Therefore, it is possible to suitably prevent the injection part 11 from being caught by a hand or another member.

  When the protective member 30 is attached to the injection part 11, the second vertical wall part 32 is fitted with a cap part 321 that covers the connecting part 114 g in a liquid-tight manner and a protrusion 111 d formed on the injection main body part 111. Possible recesses 322.

  The cap part 321 is provided on the first surface 32A as shown in FIG. The cap portion 321 is provided integrally with the first surface 32A, but may be provided separately. As shown in FIG. 9, the cap portion 321 includes a hollow-shaped hollow portion 321a that opens in the left-right direction of FIG. 9 as an axial direction, and a solid-shaped solid portion 321b that is continuous with the hollow portion 321a. The inner diameter of the hollow portion 321a is an inner diameter that is liquid-tightly connected to the outer shape of the cap 114c.

  According to the cap part 321 configured in this way, when the protective member 30 is mounted on the injection main body part 111, the connecting part 114g can be maintained in a liquid-tight state by the hollow part 321a and the solid part 321b. it can. Therefore, it is possible to suitably prevent the connecting portion 114g from being wetted by the liquid during bathing, and the chemical solution administration device 100 can be used in a sanitary manner.

  As shown in FIGS. 7 and 8A, the recess 322 extends in the sliding direction. Thus, since the recess 322 is formed in the protection member 30, the protection member 30 can be slid in a state where the recess 322 is fitted to the protrusion 111 d of the injection main body 111.

  As shown in FIG. 8A, the second hooking portion 33 is provided continuously with the second vertical wall portion 32. Similarly to the first hooking portion 145d of the liquid delivery disposable portion 14, the second hooking portion 33 is caught in the through hole 111e of the injection main body portion 111 when the protective member 30 is slid relative to the injection portion 11. Fix it. As a result, the protection member 30 is attached to the injection main body 111. In addition, as long as the injection | pouring part 11 and the protection member 30 are removable, the means with which the protection member 30 is mounted | worn with the injection | pouring part 11 is not limited above.

  In the present embodiment, the protection member 30 is made of resin parts such as plastic, but the material is limited to this as in the case of the first housing 135 and the second housing 145 as long as it has a certain degree of strength. Not.

  Next, a usage example of the insulin administration device 100 will be described.

  First, prior to the use of the insulin administration device 100, the user attaches the injection unit 11 to the living body, and performs the treatment of placing the cannula 113 in the living body using the puncture tool M as described above.

  In addition, prior to the use of the insulin administration device 100, the user connects and integrates the liquid feeding reuse unit 13 and the liquid feeding disposable unit 14 to form the liquid feeding unit 12. Then, the user operates the remote controller 20 to give an instruction for priming (first priming) for filling the liquid feeding tube 142 of the liquid feeding disposable part 14 with insulin. In response to the instruction from the remote controller 20, the first control unit 134 operates the drive mechanism 131 to move the slide unit 146 of the extrusion mechanism 143 by a predetermined amount, so that the insulin stored in the drug solution storage unit 141 is stored. The liquid is fed to the liquid feeding pipe 142, and the liquid feeding pipe 142 is filled with insulin.

  Next, the liquid feeding part 12 is connected to the injection part 11.

  Next, the user operates the remote controller 20 to instruct priming (second priming) so that the lumen of the cannula 113 is filled with insulin.

  Next, the user operates the remote controller 20 to perform a basal mode in which insulin is delivered over time at a constant amount, a bolus mode in which the amount of insulin delivered per unit time is temporarily increased, and the like. The liquid feeding mode is appropriately selected to deliver insulin into the living body.

  The use example of the insulin administration device 100 has been described above. Next, with reference to FIG. 9 etc., the usage example of the protection member 30 at the time of bathing is demonstrated.

  First, the user operates the remote controller 20 to stop the liquid feeding operation, and removes the liquid feeding part 12 from the injection part 11 in the liquid feeding main body part 10 in the state of FIG.

  Next, as shown in FIGS. 7 and 9A, the protection member 30 is slid relative to the injection portion 11 to attach the protection member 30 to the injection main body 111. At this time, the protection member 30 is slid in a state where the recess 322 of the protection member 30 is fitted to the protrusion 111d of the injection main body 111. Further, when the protective member 30 is moved by a predetermined distance, the second hooking portion 33 of the protective member 30 is caught in the through hole 111e of the injection main body 111, and the protective member 30 is attached to the injection main body 111. .

  Then, after bathing, the pouring portion 11 to which the protective member 30 is attached is tilted by a predetermined angle, so that it accumulates in the space V defined by the pouring main body portion 111, the plane portion 31, and the second vertical wall portion 32 during bathing. The liquid is discharged to the outside.

  Next, the protection member 30 is removed from the injection main body 111, and the liquid feeding part 12 is attached to the injection main body 111.

  As described above, the protection member 30 according to the present embodiment includes the chemical solution storage unit 141 that stores the chemical solution and the drive mechanism 131 that generates the driving force for supplying the chemical solution in the chemical solution storage unit 141 into the living body. A liquid part 12, an injection main body part 111 to which the liquid supply part 12 is attached, a connecting part 114g that is liquid-tightly connected to the chemical liquid storage part 141 when the liquid supply part 12 is attached to the injection main body part 111; And an injection unit 11 having a cannula 113 for injecting a drug solution sent from the drug solution storage unit 141 through the connecting portion 114g into the living body. Further, the protective member 30 is attached to the injection main body 111 from which the liquid feeding section 12 is removed, thereby protecting the injection main body 111 and maintaining the connecting portion 114g in a liquid-tight state. According to the protective member 30 configured as described above, the protective member 30 is attached to the injection main body 111 to protect the injection main body 111. Therefore, the projection 111d, the through hole 111e, the support member 114, and the like provided on the injection main body 111 can be protected, and the injection portion 11 can be suitably prevented from being caught by a hand or another member. . Further, the protective member 30 is attached to the injection main body 111, so that the connecting portion 114g is maintained in a liquid-tight state. For this reason, it can prevent suitably that the connection part 114g gets wet with a liquid.

  Further, the injection main body 111 includes a mounting surface 111a on which the liquid feeding unit 12 is placed and a first vertical wall portion that is provided around the mounting surface 111a and defines an accommodation space in which the liquid feeding unit 12 is accommodated. 111b. In addition, when the protection member 30 is mounted on the injection main body 111, the planar portion 31 disposed to face the placement surface 111a and the second vertical wall provided to face the first vertical wall portion 111b. Part 32 and a cap part 321 for maintaining the connecting part 114g in a liquid-tight state. According to this configuration, the planar portion 31 and the second vertical wall portion 32 can cover and protect the projection 111d, the through hole 111e, the support member 114, and the like provided in the injection main body portion 111, and the injection portion 11 can be protected. It can prevent more suitably that it is caught by a hand or another member and removes. Further, when the protective member 30 is attached to the injection main body 111, the cap portion 321 maintains the connecting portion 114g in a liquid-tight state. For this reason, it can prevent more suitably that the connection part 114g gets wet with the liquid.

  In addition, the protection member 30 is provided with a drain hole 34 that communicates the inside and outside of the space V defined by the injection main body 111, the flat surface portion 31, and the second vertical wall portion 32 while being attached to the injection main body 111. Prepare. For this reason, the liquid accumulated in the space V defined by the injection main body part 111, the flat surface part 31, and the second vertical wall part 32 during the bathing is supplied to the injection part 11 to which the protective member 30 is attached after the bathing. By tilting the angle, it can be discharged to the outside. Therefore, the chemical solution administration device 1 can be used more hygienically.

  Further, the drain hole 34 is formed adjacent to the second vertical wall portion 32 on the inner side of the second vertical wall portion 32 in the plane portion 31. For this reason, when discharging the liquid from the drain hole 34, if the injection part 11 to which the protection member 30 is attached is tilted by a predetermined angle, the liquid moves to the second vertical wall part 32 and then the second vertical wall part. The water is discharged from a drain hole 34 formed adjacent to 32. Therefore, the liquid can be discharged more efficiently.

  Moreover, the protection member 30 has the 2nd hook part 33 which can be fixed to the injection | pouring main-body part 111 in the state which slid along the surface direction of the mounting surface 111a. For this reason, the protective member 30 can be attached to the injection main body 111 by the same easy operation as that of the liquid feeding unit 12.

  Further, as described above, the drug solution administration device 1 according to the present embodiment includes the drug solution administration device 100 and the protection member 30 described above. According to the drug solution administration device 1 configured in this manner, the injection main body 111 is protected by attaching the protection member 30 to the injection main body 111. Therefore, the projection 111d, the through hole 111e, the support member 114, and the like provided on the injection main body 111 can be protected, and the injection portion 11 can be suitably prevented from being caught by a hand or another member. . Further, the protective member 30 is attached to the injection main body 111, so that the connecting portion 114g is maintained in a liquid-tight state. For this reason, it can prevent suitably that the connection part 114g gets wet with a liquid.

  Hereinafter, the modification of the protection member 30 of embodiment mentioned above is illustrated.

(Modification)
10-12 is a figure where it uses for description of the protection member 230 which concerns on a modification.

  The protection member 230 according to the modified example is different from the protection member 30 according to the above-described embodiment in that the protection member 230 covers and protects the pasting portion 112 by being configured to be one size larger.

  The protection member 230 according to the modified example includes a flat surface portion 231 disposed to face the placement surface 111a of the injection main body portion 111, a second vertical wall portion 32 provided to face the first vertical wall portion 111b, It has the 2nd hook part 33 hooked in the through-hole 111e of the injection | pouring main-body part 111, and the side wall 234 provided in the outer periphery of the 2nd vertical wall part 32. As shown in FIG.

  As shown in FIGS. 10 and 11, the flat portion 231 has a configuration that is slightly larger than the pasting portion 112 in a top view. Further, the flat surface portion 231 is formed with a drain hole 34 as in the flat surface portion 31 according to the embodiment.

  Since the 2nd vertical wall part 32 and the 2nd hook part 33 have the structure similar to the 2nd vertical wall part 32 and the 2nd hook part 33 of the protection member 30 which concerns on embodiment mentioned above, description is abbreviate | omitted.

  The side wall 234 is provided on the outer periphery of the second vertical wall portion 32 as shown in FIG. The side wall 234 is provided at a location excluding the tip in the insertion direction. For this reason, the protection member 230 can be attached to the injection main body 111 by sliding in the surface direction of the placement surface 111a. Further, the side wall 234 is configured to cover the pasting part 112 together with the flat part 231. Since the flat portion 231 and the side wall 234 are provided, the protection member 230 according to the modification covers and protects the sticking portion 112.

  According to the protection member 230 according to the modified example described above, the sticking portion 112 can be suitably prevented from being peeled off in order to cover and protect the sticking portion 112.

  As described above, the drug solution administration device 100 according to the present invention has been described through the embodiments. However, the drug solution administration device 100 according to the present invention is not limited to the described configuration, and is based on the description of the scope of claims. Various modifications are possible.

  In the above-described embodiment, the protection members 30 and 230 are mounted by sliding and moving in the surface direction of the placement surface 111a with respect to the injection portion 11. However, you may mount | wear by making it approach relatively in the orthogonal direction of the mounting surface 111a.

  In the above-described embodiment, the cap portion 321 is provided on the second vertical wall portion 32. However, the cap portion 321 may be provided separately from the second vertical wall portion 32.

  Moreover, although embodiment mentioned above demonstrated the example which used insulin as a chemical | medical solution to send, it is not limited to this. For example, it can be used for administration of medicinal solutions such as antibiotics, nutrients, analgesics, hormones and the like.

1 chemical solution administration device,
100 insulin administration device (medical solution administration device),
11 injection part,
111 injection body part (mounting part),
111a mounting surface,
111b first vertical wall,
111d protrusion,
112 affixing part,
113 cannula,
114b connection port,
114c cap,
114g connecting part,
12 Liquid feeding part,
131 drive mechanism,
141 chemical storage part,
30, 230 protective member,
31, 231 plane part,
32 Second vertical wall,
321 cap part,
322 recess,
33 second hook part,
34 Drain hole (hole),
V space.

Claims (7)

A liquid supply section including a chemical liquid storage section for storing a chemical liquid and a driving mechanism for generating a driving force for supplying the chemical liquid in the chemical liquid storage section into the living body;
A mounting part to which the liquid feeding part is attached, a connecting part that is liquid-tightly connected to the chemical liquid storage part when the liquid feeding part is attached to the mounting part, and a connecting part from the chemical liquid storage part to the connecting part An injecting portion having a cannula for injecting the medicinal solution fed through the living body into the living body, and a protective member removable from the medicinal solution administration device,
A protective member that protects the mounting portion and maintains the connecting portion in a liquid-tight state by being mounted on the mounting portion in a state where the liquid feeding portion is removed. The mounting portion includes a placement surface on which the liquid feeding portion is placed, and a first vertical wall portion that is provided around the placement surface and defines an accommodation space in which the liquid feeding portion is accommodated. ,
The protective member is
When mounted on the mounting portion, a plane portion disposed to face the placement surface, and
A second vertical wall provided opposite to the first vertical wall,
The protective member according to claim 1, further comprising a cap portion that maintains the connecting portion in a liquid-tight state.   The protection member according to claim 2, further comprising a hole that communicates the inside and outside of a space defined by the mounting portion, the flat surface portion, and the second vertical wall portion in a state of being mounted on the mounting portion.   The said hole is a protection member of Claim 3 formed adjacent to the said 2nd vertical wall part in the inner side of the said 2nd vertical wall part among the said plane parts.   The protection member according to any one of claims 2 to 4, further comprising a fixing portion that can be fixed to the mounting portion in a state of sliding along the surface direction of the placement surface. The injection part further includes an attaching part for attaching the mounting part to the living body,
The protection member according to any one of claims 1 to 5, wherein the protective member is covered with the attachment portion in a state where the liquid feeding portion is removed, thereby covering the sticking portion. A liquid supply section including a chemical liquid storage section for storing a chemical liquid and a driving mechanism for generating a driving force for supplying the chemical liquid in the chemical liquid storage section into the living body;
A mounting part to which the liquid feeding part is attached, a connecting part that is liquid-tightly connected to the chemical liquid storage part when the liquid feeding part is attached to the mounting part, and a connecting part from the chemical liquid storage part to the connecting part An infusion part comprising a cannula for injecting the medicinal solution sent through the living body into the living body,
Protection that is attachable to and detachable from the liquid medicine administration device and that is attached to the attachment part with the liquid delivery part removed, thereby protecting the attachment part and maintaining the connecting part in a liquid-tight state. A medicinal solution administration device.