Drug administration device and cradle device

Abstract

This medical fluid administration apparatus includes a pump body, a cradle device, and a connection port. The cradle device has side wall portions that are vertically arranged in a third direction Z from both ends of a mounting surface in a second direction and face side surface portions. The side wall portions have a posture correction portion that abuts or faces a corner portion of the casing at which an upper surface portion connects to the side surface portion.

Description

[Technical Field]

[0001] The present invention relates to a liquid medicine administration device, and more particularly to a liquid medicine administration device for continuous liquid medicine administration, such as an insulin pump, and a cradle device capable of supporting the pump body. [Background technology]

[0002] In recent years, treatments have been performed in which a medicinal liquid is continuously administered into the body of a patient by subcutaneous injection, intravenous injection, or the like. For example, a treatment for diabetes patients involves continuously injecting a small amount of insulin into the patient's body. In this treatment, a portable medicinal liquid administration device (a so-called insulin pump) that can be attached to the patient's body or clothing and carried around is used to administer the medicinal liquid (insulin) to the patient throughout the day.

[0003] In such a portable drug solution administration device, first, a cradle device is attached to the patient's skin. Next, a connection port is attached to the cradle device, and a cannula attached to the connection port is inserted into the patient's skin and placed therein. Then, a pump body that stores and delivers drug solution is attached to the cradle device. At this time, a connecting needle tube in the pump body that delivers drug solution is connected to the connection port (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Special Publication No. 2007-509661 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the technology described in Patent Document 1, there was a risk that the pump body would be attached to the cradle device at an angle relative to the specified orientation. When the pump body is attached at an angle, the connecting needle tube may push open the rubber stopper provided in the connection port, or the connecting needle tube or the connection port may become deformed. As a result, a gap may form between the connecting needle tube and the connection port, causing the medicinal solution to leak out.

[0006] In consideration of the above problems, an object of the present invention is to provide a liquid medicine administration device and a cradle device that allow the pump body to be mounted in the correct mounting position. [Means for solving the problem]

[0007] To solve the above problems and achieve the present object, a drug solution administration device includes a pump body, a cradle device, and a connection port. The pump body includes a drug solution storage section filled with drug solution, a liquid supply pipe connected to the drug solution storage section, and a housing that houses these. The cradle device has a mounting surface on which the pump body is placed, and the pump body is detachably attached by sliding the pump body in a first direction. The connection port includes a port body connected to the liquid supply pipe and a cannula that can be inserted into a living body, and is attached to the mounting surface. The housing has a bottom surface that is placed on the mounting surface, an upper surface that faces the bottom surface, and side surfaces that are continuous with both end portions of the bottom surface and the upper surface in a second direction perpendicular to the first direction and connect the bottom surface and the upper surface. The cradle device extends from both end portions of the mounting surface in the second direction in a third direction that is approximately perpendicular to both the first and second directions, and has side walls that face the side surfaces. The side wall is provided with a posture correcting portion that abuts against or faces a corner where the top surface and side surface of the housing are connected.

[0008] The cradle device has a pump main body that administers a medicinal liquid removably attached thereto. The cradle device has a mounting surface portion whose underside is attached to the surface of a living body, an attachment portion that is provided on the mounting surface portion and to which a connection port having a cannula that can be inserted into the living body can be connected, and a pair of opposing side walls that stand upright from the end of the mounting surface portion in the direction away from the surface of the living body. Each of the pair of side walls has a protruding portion that further protrudes in the direction away from the surface of the living body. The protruding portions are curved so that their ends overlap the mounting surface portion when viewed from above from the direction in which the pair of side walls stand. [Effects of the Invention]

[0009] According to the medicinal liquid administration device and cradle device having the above configuration, the pump body can be mounted in the correct mounting position. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a perspective view showing a chemical liquid administration device according to a first embodiment. [Figure 2] 1 is a perspective view showing a state before a pump body is attached to a cradle device in a chemical liquid administration device according to a first embodiment. FIG. [Figure 3] 1 is a perspective view showing a pump body of a chemical liquid administration device according to a first embodiment. FIG. [Figure 4] 1 is a plan view showing the internal configuration of a pump body of a chemical solution administration device according to a first embodiment. FIG. [Figure 5] 3 is a cross-sectional view showing a connection state between a connecting needle tube and a connection port of the drug solution administration device according to the first embodiment. FIG. [Figure 6] 1 is an enlarged perspective view showing a cradle device and a connection port in a chemical solution administration device according to a first embodiment. FIG. [Figure 7] 1 is a perspective view showing a state in which a pump body is attached to a cradle device in a chemical solution administration device according to a first embodiment. FIG. [Figure 8]1 is a side view showing a state in which a pump body is attached to a cradle device in a chemical solution administration device according to a first embodiment. FIG. [Figure 9] 1 is a perspective view showing a state in which the pump body is being attached to a cradle device in a chemical liquid administration device according to a first embodiment, with the posture of the pump body corrected. FIG. [Figure 10] FIG. 10 is a perspective view showing a cradle device in the drug solution administration device according to the second embodiment. [Figure 11] FIG. 11 is a perspective view showing a cradle device in the drug solution administration device according to the third embodiment. [Figure 12] FIG. 11 is a perspective view showing a mounting port of a cradle device in a chemical solution administration device according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of a drug solution administration device and a cradle device will be described with reference to Figures 1 to 12. Note that common members in each figure are given the same reference numerals. Furthermore, the present invention is not limited to the following embodiments.

[0012] 1. First embodiment 1-1.Configuration of the drug administration device First, with reference to Figs. 1 to 5, a configuration example of a medicinal liquid administration device according to a first embodiment (hereinafter referred to as "this example") will be described. FIG. 1 is a perspective view showing a chemical liquid administration device, and FIG. 2 is a perspective view showing a state before a pump body is attached to a cradle device of the chemical liquid administration device.

[0013] The medicinal liquid administration device 1 shown in Figure 1 is a portable insulin pump for continuously administering medicinal liquid into a patient's body, similar to patch-type, tube-type, and other portable medicinal liquid administration devices. The medicinal liquid administration device 1 is attached to the living body when in use. The medicinal liquid administration device 1 has a pump main body 2, a cradle device 3 to which the pump main body 2 is detachably attached, and a connection port 6 attached to the cradle device 3.

[0014] [Pump body] The configuration of the pump body 2 will be described with reference to FIGS. Fig. 3 is a perspective view showing pump body 2, and Fig. 4 is a plan view showing the internal configuration of pump body 2. More specifically, Fig. 4 is a plan view showing the internal configuration of pump body 2 when top surface 21 is not shown. Fig. 5 is a partial cross-sectional view showing the state in which pump body 2 is attached to cradle device 3.

[0015] As shown in Figures 1 to 3, pump body 2 includes housing 11 and connecting needle tube 12. As shown in Figure 4, housing 11 contains liquid delivery piping 13, liquid medicine storage section 14, drive section 15, power supply section 16 that supplies power to drive section 15, plunger mechanism 17, and transmission mechanism 18. Liquid medicine storage section 14 is filled with the liquid medicine to be administered. Liquid delivery piping 13 is connected to liquid medicine storage section 14. Furthermore, plunger mechanism 17 that pushes out the liquid medicine is attached to liquid medicine storage section 14.

[0016] A transmission mechanism 18 is connected to the plunger mechanism 17. The transmission mechanism 18 is connected to the drive unit 15 and transmits the driving force of the drive unit 15 to the plunger mechanism 17 via gears or the like. The transmitted driving force drives the plunger mechanism 17. When the plunger mechanism 17 is driven, the liquid medicine stored in the liquid medicine storage unit 14 is sent out toward the liquid delivery pipe 13.

[0017] Furthermore, the end of liquid supply piping 13 opposite to liquid medicine storage section 14 has connecting needle 12. The liquid medicine that has passed through liquid supply piping 13 is discharged from connecting needle 12. As shown in FIGS. 4 and 5 , when pump body 2 is attached to cradle device 3, connecting needle 12 is pierced by rubber stopper 82 provided at connecting section 81 a of connection port 6, which will be described later. This connects liquid supply piping 13 and connection port 6 via connecting needle 12.

[0018] Hereinafter, the direction in which the pump body 2 is attached to the cradle device 3 (attachment direction) will be referred to as the first direction X. The pump body 2 is attached by sliding it in a direction from the first end to the second end of the cradle device 3. A direction perpendicular to the first direction X and perpendicular to the direction in which the pump body 2 and the cradle device 3 overlap when the drug solution administration device 1 administers drug solution will be referred to as the second direction Y (width direction). In other words, the second direction Y is a direction that is approximately parallel to the surface of a living body when the drug solution administration device 1 administers drug solution. The direction in which the pump body 2 and the cradle device 3 overlap, i.e., a direction perpendicular to both the first direction X and the second direction Y, will be referred to as the third direction Z (up-down direction). Here, the third direction Z is a direction that is approximately perpendicular to the surface of a living body when the drug solution administration device 1 administers drug solution.

[0019] As shown in Figures 2 and 3, the housing 11 is formed in a flat, approximately rectangular parallelepiped shape with curved corners. The housing 11 has a top surface portion 21, a bottom surface portion 22, a front surface portion 23, a back surface portion 24, a first side surface portion 25, a second side surface portion 26, and a bottom storage portion 27. The top surface portion 21 and the bottom surface portion 22 face each other. The top surface portion 21 is formed in a generally rectangular shape with curved corners when viewed from above. Furthermore, the center portion of the top surface portion 21 bulges out toward the opposite side from the bottom surface portion 22 in the third direction Z.

[0020] A front portion 23 is connected approximately perpendicularly to a second end of the top surface portion 21 in the first direction X, and a back portion 24 is connected approximately perpendicularly to a first end of the top surface portion 21 in the first direction X. The front portion 23 and the back portion 24 face each other. Furthermore, a first side surface portion 25 is connected approximately perpendicularly to one end of the top surface portion 21 in the second direction Y, and a second side surface portion 26 is connected approximately perpendicularly to the other end of the top surface portion 21 in the second direction Y.

[0021] As shown in Fig. 3, a fitting protrusion 31 is formed on the front surface portion 23. When the front surface portion 23 is viewed from the second end toward the first end in the first direction X, the fitting protrusion 31 is formed closer to the other end of the front surface portion 23 in the second direction Y. In other words, the fitting protrusion 31 is offset from the center of the housing 11 in the second direction Y in the opposite direction to a connection port 28, which will be described later. The fitting protrusion 31 protrudes from the front surface portion 23 toward the second end in the first direction X. This fitting protrusion 31 fits into a fitting hole 54 provided in a cradle device 3, which will be described later.

[0022] The bottom surface storage section 27 is formed at the corners of the bottom surface section 22, the first side surface section 25, and the front surface section 23 of the housing 11. The bottom surface storage section 27 is a recess that is recessed from the bottom surface section 22 toward the top surface section 21 along the third direction Z, with a predetermined area and a predetermined length (thickness).

[0023] A cylindrical connection port 28 is formed in a wall surface 27a of the bottom storage portion 27 on the first end side in the first direction X. The connection port 28 has a tubular hole 28a that protrudes from the wall surface 27a toward the second end side in the first direction X. The connecting needle tube 12 is disposed in the tubular hole 28a of the connection port 28. The tubular hole 28a protrudes from the wall surface 27a so as to surround the periphery of the connecting needle tube 12, thereby protecting the connecting needle tube 12. Furthermore, the connecting needle tube 12 protrudes from the wall surface 27a inside the tubular hole 28a toward the second end side in the first direction X.

[0024] 4 and 5, when the pump body 2 is attached to the cradle device 3, the connection port 6 attached to the cradle device 3 is housed in the bottom storage section 27. Furthermore, the connection part 81a and the rubber stopper 82 of the connection port 6 are inserted into the cylindrical hole 28a of the connection opening 28.

[0025] 3, a slide groove 32 and a detection groove 34 are formed in the bottom surface portion 22. The slide groove 32 and the detection groove 34 are recesses that are recessed from the bottom surface portion 22 toward the top surface portion 21 along the third direction Z. The slide groove 32 is formed in an intermediate portion of the bottom surface portion 22 in the second direction Y. The slide groove 32 is formed continuously from the second end portion to the first end portion of the bottom surface portion 22 in the first direction X.

[0026] The detection groove 34 is formed on one end side of the bottom surface portion 22 in the second direction Y. The detection groove 34 extends from the wall surface 27a of the bottom surface storage portion 27 toward the first end in the first direction X. An attachment detection switch 33 is provided in the detection groove 34.

[0027] When the pump main body 2 is attached to the cradle device 3, the attachment detection switch 33 is pressed by a detection rail 52 provided on the cradle device 3, which will be described later. When pressed, the attachment detection switch 33 outputs attachment information to a control unit (not shown). This allows the control unit to detect that the pump main body 2 has been attached to the cradle device 3.

[0028] As shown in Fig. 3, the first side surface portion 25 is formed with a first guide groove portion 35 and a first engagement hook portion 36. The first engagement hook portion 36 is formed at a first end portion in the first direction X of the first side surface portion 25. The first engagement hook portion 36 is formed closer to the first end portion in the first direction X than the first guide groove portion 35. The first engagement hook portion 36 is detachably engaged with a first engagement receiving portion 61 (see Fig. 2) of the cradle device 3, which will be described later.

[0029] The first guide groove 35 is formed in the middle of the first side surface portion 25 in the third direction Z. The first guide groove 35 is a groove recessed from the first side surface portion 25 toward the inside of the housing 11 along the second direction Y. The first guide groove 35 extends from the vicinity of the first engagement hook portion 36 on the first side surface portion 25 along the first direction X.

[0030] An extension 35a is formed at one end of the first guide groove 35, i.e., on the bottom surface storage section 27 side. The extension 35a protrudes from the wall surface 27a of the bottom surface storage section 27 toward the second end in the first direction X. The extension 35a protrudes further in the first direction X than the connecting needle tube 12 protruding from the wall surface 27a. Therefore, the second end of the first guide groove 35 in the first direction X extends further toward the second end in the first direction X than the tip of the connecting needle tube 12.

[0031] 2, the second side surface portion 26 is formed with a second guide groove portion 37 and a second engagement hook portion 38. The second engagement hook portion 38 is formed at a first end portion of the second side surface portion 26 in the first direction X. The second engagement hook portion 38 is detachably engaged with a second engagement receiving portion 62 of the cradle device 3, which will be described later.

[0032] The second guide groove portion 37 is formed in the middle of the second side surface portion 26 in the third direction Z. The second guide groove portion 37 is a groove portion recessed from the second side surface portion 26 toward the inside of the housing 11 along the second direction Y. The second guide groove portion 37 extends from the second engaging hook portion 38 along the first direction X by a length substantially equal to the length of the first guide groove portion 35 in the first direction X.

[0033] [Cradle device] Next, the cradle device 3 will be described with reference to FIGS. FIG. 6 is an enlarged perspective view of the cradle device 3 and the connection port 6. As shown in FIG.

[0034] As shown in Fig. 1, the cradle device 3 is configured to be able to support the pump body 2 having the above-described configuration. As shown in Fig. 2, the cradle device 3 has a substantially flat mounting surface 41, a first side wall 42, a second side wall 43, and a third side wall 44. The mounting surface 41 is formed in a substantially rectangular shape with curved corners when viewed from above. When the pump body 2 is attached to the cradle device 3, the bottom surface 22 of the housing 11 of the pump body 2 is placed on the mounting surface 41.

[0035] A detection rail 52, a sliding rail 53, and a mounting portion 55 are provided on one surface of the mounting surface 41. The mounting portion 55 is disposed at a second end of the mounting surface 41 in the first direction X, and is formed at one end of the mounting surface 41 in the second direction Y. As shown in FIG. 6, a connection port 6 is attached to the mounting portion 55. Furthermore, the mounting portion 55 is provided with an insertion hole (not shown) through which a cannula 83 of the connection port 6, which will be described later, is inserted.

[0036] The detection rail 52 is formed at one end of the mounting surface 41 in the second direction Y, closer to the first end in the first direction X than the mounting portion 55. The detection rail 52 is a protrusion that protrudes from one surface of the mounting surface 41. The first end of the detection rail 52 in the first direction X gradually increases in thickness from the mounting surface 41 toward the second end in the first direction X. The detection rail 52 extends a predetermined length along the first direction X. When the pump body 2 is mounted on the cradle device 3, the detection rail 52 fits into the detection groove 34 provided in the pump body 2. The detection rail 52 then presses the mounting detection switch 33.

[0037] The sliding rail 53 is formed at the middle of one surface of the mounting surface 41 in the second direction Y. The sliding rail 53 extends from the second end of the one surface of the mounting surface 41 toward the first end in the first direction X. When the pump body 2 is attached to the cradle device 3, the sliding groove 32 provided on the bottom surface 22 of the pump body 2 slidably fits into the sliding rail 53.

[0038] A first side wall 42 is continuous with one end of the mounting surface 41 in the second direction Y, and extends substantially perpendicular to the mounting surface 41. A second side wall 43 is continuous with the other end of the mounting surface 41 in the second direction Y, and extends substantially perpendicular to the mounting surface 41. A third side wall 44 is continuous with a second end of the mounting surface 41 in the first direction X, and extends substantially perpendicular to the mounting surface 41. The first side wall 42 and the second side wall 43 face each other. Three of the four sides of the mounting surface 41 are connected to the first side wall 42, the second side wall 43, and the third side wall 44. For this reason, a plurality of side walls extend from the mounting surface 41 in the direction away from the surface of the living body. The first side wall 42 and the second side wall 43 have a length that is at least a portion of the side of the mounting surface 41 that is parallel to the first direction X, more preferably 50% or more of the length of the side that is parallel to the first direction X. The first end of the mounting surface 41 in the first direction X does not have a side wall that is continuous and substantially perpendicular to the mounting surface 41. In other words, the first end and a portion of the first end of the mounting surface 41 in the first direction X are open. As a result, the pump body 2 is inserted into the mounting surface 41 from the first end side in the first direction X.

[0039] When the pump body 2 is attached to the cradle device 3, the first side wall 42 faces the first side surface 25 of the housing 11 of the pump body 2, and the second side wall 43 faces the second side surface 26. The third side wall 44 faces the front surface 23 of the housing 11. At least a portion of the pump body 2 is surrounded by the first side wall 42, the second side wall 43, and the third side wall 44 and is housed inside the cradle device 3.

[0040] 2, a fitting hole 54 is formed in third side wall portion 44. When pump body 2 is attached to cradle device 3, fitting protrusion 31 of pump body 2 fits into fitting hole 54.

[0041] The first side wall 42 is formed with a first guide rail 51, a first posture correction section 56, and a first engagement receiving section 61. The first engagement receiving section 61 is formed at a first end section of the first side wall 42 in the first direction X. The first engagement receiving section 61 is an opening section formed by cutting out the first side wall 42 in a substantially rectangular shape. When the pump body 2 is attached to the cradle device 3, the first engagement hook section 36 detachably engages with the first engagement receiving section 61.

[0042] As shown in FIG. 6 , the first guide rail 51 protrudes from one surface of the first side wall 42 facing the second side wall 43 toward the other end in the second direction Y. The first guide rail 51 is a protrusion formed parallel to the first direction X from the second end of the first side wall 42 in the first direction X. The second end of the first guide rail 51 in the first direction X extends to the position of the connection port 6 attached to the mounting portion 55. More specifically, the first guide rail 51 extends beyond the second end of the connection portion 81 a.

[0043] When the pump body 2 is mounted on the cradle device 3, the first guide rail 51 engages with the first guide groove portion 35 provided on the first side surface portion 25 of the pump body 2. This guides the mounting direction of the pump body 2.

[0044] As shown in FIGS. 1 and 2 , the first posture correcting portion 56 is a plate-shaped protrusion extending from the first side wall portion 42. The first posture correcting portion 56 further extends upward in the third direction Z from the first side wall portion 42. That is, the first posture correcting portion 56 extends from the first side wall portion 42 in the direction opposite to the placing surface portion 41. The first posture correcting portion 56 is formed on the first side wall portion 42 closer to the first end portion in the first direction X than the first guide rail 51. In this example, the first posture correcting portion 56 is formed on the first end portion of the first side wall portion 42 in the first direction X.

[0045] The first posture correcting part 56 protrudes in the third direction Z from one end of the first side wall part 42 in the third direction Z and curves toward the other end in the second direction Y. That is, the first posture correcting part 56 is formed in a shape corresponding to the shape of the connection part (corner part) between the top surface part 21 and the first side surface part 25 of the housing 11. The tip and / or tip part of the first posture correcting part 56 is located above the placement surface part 41 in the third direction Z in a side view of the cradle device 3 seen from the first direction X. In a plan view seen from the third direction Z, the first posture correcting part 56 covers at least a part of the top surface part 21.

[0046] 1 and 2, the second side wall 43 is formed with a second guide rail (not shown), a second posture correction section 57, and a second engagement receiving section 62. The second engagement receiving section 62 is formed at a first end of the second side wall 43 in the first direction X. The second engagement receiving section 62 is an opening formed by cutting out the second side wall 43 in a substantially rectangular shape. When the pump body 2 is attached to the cradle device 3, the second engagement receiving section 62 detachably engages with the second engagement hook section 38.

[0047] The second guide rail protrudes from one surface of the second side wall 43 facing the first side wall 42 toward one end in the second direction Y. The second guide rail is a protrusion formed parallel to the direction from the second end toward the first end of the second side wall 43 in the first direction X. When the pump body 2 is attached to the cradle device 3, the second guide rail engages with a second guide groove 37 provided on the second side surface 26 of the pump body 2. This guides the attachment direction of the pump body 2.

[0048] The second posture correcting portion 57 is a plate-shaped protrusion extending from the second side wall portion 43. The second posture correcting portion 57 further extends upward in the third direction Z from the second side wall portion 43. That is, the second posture correcting portion 57 extends from the second side wall portion 43 in the direction opposite to the placing surface portion 41. The second posture correcting portion 57 is formed on the second side wall portion 43 closer to the first end portion in the first direction X than the second guide rail. The second posture correcting portion 57 is also formed at a position opposite to the first posture correcting portion 56 formed on the first side wall portion 42. In this example, the second posture correcting portion 57 is formed on the first end portion in the first direction X of the second side wall portion 43.

[0049] The second posture correcting part 57 protrudes in the third direction Z from one end of the second side wall part 43 in the third direction Z and curves toward one end of the second direction Y. That is, the second posture correcting part 57 is formed in a shape corresponding to the shape of the connection part (corner part) between the top surface part 21 and the second side surface part 26 of the housing 11. The tip and / or tip part of the second posture correcting part 57 is located above the placement surface part 41 in the third direction Z in a side view of the cradle device 3 seen from the first direction X. In a plan view seen from the third direction Z, the second posture correcting part 57 covers at least a part of the top surface part 21.

[0050] When attempting to attach pump main body 2 to cradle device 3, first attitude correcting section 56 abuts against a corner where first side surface section 25 and top surface section 21 of housing 11 of pump main body 2 connect. Additionally, second attitude correcting section 57 abuts against a corner where second side surface section 26 and top surface section 21 of housing 11 connect. Then, first attitude correcting section 56 and second attitude correcting section 57 correct the attitude of pump main body 2 when attached.

[0051] In addition, the first posture correction section 56 and the second posture correction section 57 are positioned at least closer to the first end in the first direction X than the connection port 6 attached to the attachment section 55, i.e., upstream of the attachment direction of the pump body 2.

[0052] The cradle device 3 is also provided with an adhesive sheet to be attached to the patient's skin. The adhesive sheet is attached to the other surface opposite to the one surface of the mounting surface portion 41 of the cradle device 3. The adhesive sheet has an opening (not shown) through which a cannula 83 of the connection port 6 (described later) passes.

[0053] The patch sheet is made of a flexible material, and has an adhesive layer formed on the surface opposite to the placement surface 41 to be attached to the patient's skin. Before being attached to the patient's skin, the adhesive layer of the patch sheet is covered with release paper.

[0054] [Connection port] Next, the connection port 6 will be described with reference to FIGS. 5 and 6, the connection port 6 has a port main body 81 and a cannula 83. The cannula 83 is held by the port main body 81. A cylindrical connection portion 81a is formed in the port main body 81. A cylindrical hole 81b of the connection portion 81a and the cannula 83 are in communication. A rubber stopper 82 is attached to the tip of the connection portion 81a.

[0055] When the connection port 6 is attached to the attachment portion 55 of the cradle device 3, the cannula 83 penetrates the placement surface portion 41 along the third direction Z and protrudes from the other surface of the placement surface portion 41. Then, the cannula 83 is punctured and placed in the living body.

[0056] Furthermore, connection portion 81a of port main body 81 faces the first end side in first direction X, i.e., the upstream side in the installation direction. A rubber stopper 82 is disposed on the first end side in first direction X of connection portion 81a. When pump main body 2 is installed in cradle device 3, connecting needle tube 12 of pump main body 2 is punctured into rubber stopper 82. This connects port main body 81 and liquid supply piping 13 of pump main body 2, and liquid supply piping 13 communicates with cannula 83. When drive unit 15 is driven, the liquid supply stored in liquid supply storage section 14 of pump main body 2 is delivered to connection port 6 via liquid supply piping 13 and administered to the patient from cannula 83.

[0057] 1-2. Example of pump body installation operation Next, an example of the mounting operation for mounting the pump body 2 in the cradle device 3 in the chemical solution administration device 1 having the above-described configuration will be described with reference to FIGS. 1, 2, and 7 to 9. FIG. 7 to 9 are diagrams showing the state in which pump body 2 is attached to cradle device 3. FIG.

[0058] First, the release paper of the adhesive sheet on the cradle device 3 is peeled off, and the adhesive sheet is attached to the patient's skin. This attaches the cradle device 3 to the patient's skin via the adhesive sheet. Then, as shown in Figure 2, the connection port 6 is attached to the attachment part 55 of the cradle device 3, and the cannula 83 is inserted into the patient's body and left in place. Next, as shown in Figure 2, the pump body 2 is inserted into the cradle device 3 from the first end side in the first direction X.

[0059] 7 and 8, an example will be described in which pump body 2 is mounted in a state in which it is tilted relative to cradle device 3, i.e., in a state in which bottom surface 22 of pump body 2 is not parallel or substantially parallel to mounting surface 41. In this state, bottom surface 22 is tilted relative to one surface of mounting surface 41 in first direction X and / or second direction Y.

[0060] 7 and 8, when the pump body 2 is moved toward the second end in the first direction X, the first attitude correction unit 56 and the second attitude correction unit 57 provided on the cradle device 3 come into contact with the upper surface 21 of the pump body 2. When the pump body 2 is further moved toward the second end in the first direction X in this state, the pump body 2 is pressed in the direction toward the cradle device 3 by the first attitude correction unit 56 and the second attitude correction unit 57.

[0061] Furthermore, the corners of housing 11 of pump body 2 are formed in a rounded, curved shape. Therefore, even if pump body 2 is moved toward the second end in first direction X while tilted relative to cradle device 3, first attitude correction unit 56 and second attitude correction unit 57 will interfere with the corners of housing 11, causing bottom surface 22 of pump body 2 to rotate in a direction approaching mounting surface 41.

[0062] 9, the inclination of pump body 2 is corrected, and bottom surface 22 of pump body 2 becomes parallel to second direction Y and first direction X. As a result, first guide groove 35 and second guide groove 37 provided on pump body 2 can be reliably engaged with first guide rail 51 and second guide rail 52.

[0063] Next, pump body 2 is slid on mounting surface 41 along first guide rail 51 and second guide rail toward the second end in first direction X. First attitude correcting section 56 and second attitude correcting section 57 face the corner between top surface 21 and first side surface 25 of housing 11 and the corner between top surface 21 and second side surface 26. Therefore, when pump body 2 is slid, pump body 2 floats up from mounting surface 41 of cradle device 3, and when it tries to move away from mounting surface 41, pump body 2 abuts against first attitude correcting section 56 and second attitude correcting section 57.

[0064] As a result, the posture of the pump body 2 when sliding it onto the cradle device 3 can be corrected to the correct posture by the first posture correcting section 56 and the second posture correcting section 57. As a result, the pump body 2 can be slid straight along the mounting surface 41 of the cradle device 3. Furthermore, because the first posture correcting section 56 and the second posture correcting section 57 can prevent the pump body 2 from floating up, vibrations occurring in the pump body 2 after the pump body 2 is attached to the cradle device 3 can be suppressed.

[0065] 5, the rubber stopper 82 and connection part 81a of the connection port 6 are inserted into the cylindrical bore 28a of the connection opening 28. Then, the connection needle 12 of the pump body 2 is pierced through the rubber stopper 82 of the connection port 6, thereby connecting the connection port 6 to the liquid supply piping 13. This connects the medicinal solution storage part 14 of the pump body 2 to the cannula 83 of the connection port 6 via the liquid supply piping 13, the connection needle 12, and the port body 81.

[0066] During the mounting operation of the pump body 2, the posture of the pump body 2 relative to the cradle device 3 is corrected by the first posture correcting unit 56 and the second posture correcting unit 57, so that the connecting needle 12 can be inserted into and connected to the rubber stopper 82 at the correct angle and direction. This prevents the connecting needle 12 from pushing the rubber stopper 82 apart and prevents the connecting needle 12 and the connection port 6 from being deformed. As a result, a gap is generated between the connecting needle 12 and the rubber stopper 82, which can prevent the medicinal solution from leaking.

[0067] Furthermore, when the pump body 2 is moved toward the second end in the first direction X, the fitting protrusion 31 fits into the fitting hole 54 of the cradle device 3. Then, the first engagement hook portion 36 engages with the first engagement receiving portion 61, and the second engagement hook portion 38 engages with the second engagement receiving portion 62. This prevents the pump body 2 attached to the cradle device 3 from falling off the cradle device 3.

[0068] Furthermore, the detection rail 52 of the cradle device 3 slides along the detection groove 34 of the pump body 2 and presses the attachment detection switch 33. As a result, a control unit (not shown) provided in the pump body 2 detects that the pump body 2 has been attached to the cradle device 3. As a result, the attachment operation of the pump body 2 to the cradle device 3 is completed.

[0069] According to the medicinal solution administration device 1 of this example, the posture of the pump body 2 is corrected by the first posture correcting unit 56 and the second posture correcting unit 57 while it is being attached to the cradle device 3. By attaching the pump body 2 to the cradle device 3 in the appropriate posture, it is possible to prevent the attachment detection switch 33 from being pressed by the detection rail 52 in an improper attachment state in which the pump body 2 is tilted relative to the cradle device 3, thereby preventing the occurrence of erroneous detection. As a result, the attachment state of the pump body 2 to the cradle device 3 is reliably detected by the attachment detection switch 33.

[0070] Furthermore, in a side view from the first direction X, the tip of the first attitude correcting unit 56 and the tip of the second attitude correcting unit 57 face the mounting surface 41 in the third direction Z. Therefore, when an attempt is made to mount the pump body 2 on the mounting surface 41 of the cradle device 3 from above in the third direction Z, the first attitude correcting unit 56 and the second attitude correcting unit 57 come into contact with the underside of the pump body 2, preventing the mounting operation of the pump body 2. As a result, the first attitude correcting unit 56 and the second attitude correcting unit 57 can prevent the pump body 2 from being mounted from an incorrect direction.

[0071] In the above-described embodiment, the cradle device 3 is provided with a protruding guide rail 51, and the pump body 2 is provided with the first guide groove 35 and the second guide groove 37 that engage with the first guide rail 51 and the second guide rail, respectively. However, the present invention is not limited to this. For example, the cradle device 3 may be provided with a guide groove, and the pump body 2 may be provided with a guide rail that engages with the guide groove.

[0072] 2. Second embodiment Next, a cradle device according to a second embodiment will be described with reference to FIG. FIG. 10 is a perspective view showing a cradle device according to the second embodiment.

[0073] The cradle device according to the second embodiment differs from the cradle device 3 according to the first embodiment in the configuration of the posture correction unit. Therefore, the configuration of the posture correction unit will be described here, and parts common to the cradle device according to the first embodiment will be assigned the same reference numerals and redundant description will be omitted.

[0074] 10, the cradle device 130 to which the connection port 6 is attached has a placement surface portion 41, a first side wall portion 42, a second side wall portion 43, and a third side wall portion 44. A first guide rail 51 is formed on the first side wall portion 42, and a second guide rail (not shown) is formed on the second side wall portion 43. In addition, a first posture correction portion 156 is formed on the first side wall portion 42, and a second posture correction portion 157 is formed on the second side wall portion 43.

[0075] The first posture correcting portion 156 and the second posture correcting portion 157 are formed on the first side wall portion 42 and the second side wall portion 43 closer to the first end in the first direction X than the first guide rail 51 and the second guide rail. The first posture correcting portion 156 and the second posture correcting portion 157 have rectangular openings 156a and 157a, respectively. The first posture correcting portion 156 and the second posture correcting portion 157 are provided with elasticity.

[0076] The first posture correcting part 156 and the second posture correcting part 157 protrude so that their tip ends are located near the middle in the second direction Y. The length of the first posture correcting part 156 and the second posture correcting part 157 in the first direction X is set to be longer than the length of the first posture correcting part 56 and the second posture correcting part 57 according to the first embodiment in the first direction X.

[0077] Therefore, the first posture correcting section 156 and the second posture correcting section 157 are formed larger than the first posture correcting section 56 and the second posture correcting section 57 according to the first embodiment. When the pump main body 2 is attached to the cradle device 130, the first posture correcting section 156 covers the first side surface section 25 to a portion of the top surface section 21 of the pump main body 2, and the second posture correcting section 157 covers the second side surface section 26 to a portion of the top surface section 21.

[0078] As a result, the first posture correction section 156 and the second posture correction section 157 can not only reliably correct the posture of the pump body 2 when it is attached, but also increase the holding force that holds the pump body 2.

[0079] The other configurations are the same as those of the cradle device 3 according to the first embodiment, and therefore the description thereof will be omitted. The cradle device 130 having such a configuration can also obtain the same effects as those of the cradle device 3 according to the first embodiment described above.

[0080] 3. Third embodiment Next, a cradle device according to a third embodiment will be described with reference to FIGS. 11 and 12 are perspective views showing a cradle device according to the third embodiment.

[0081] The cradle device according to the third embodiment differs from the cradle device 3 according to the first embodiment in the configuration of the posture correction unit. Therefore, the configuration of the posture correction unit will be described here, and parts common to the cradle device according to the first embodiment will be assigned the same reference numerals and redundant description will be omitted.

[0082] 11 and 12, the cradle device 230 to which the connection port 6 is attached has a placement surface portion 41, a first side wall portion 42, a second side wall portion 43, and a third side wall portion 44. A first guide rail 51 is formed on the first side wall portion 42, and a second guide rail (not shown) is formed on the second side wall portion 43. In addition, the cradle device 230 is formed with a posture correction portion 256.

[0083] The posture correcting section 256 is formed on the first side wall section 42 and the second side wall section 43 closer to the first end in the first direction X than the first guide rail 51 and the second guide rail. The posture correcting section 256 is formed to connect one end of the first side wall section 42 and the second side wall section 43 in the third direction Z. Therefore, the posture correcting section 256 is provided opposite the mounting surface section 41. The posture correcting section 256 also covers at least a portion of each of the top surface section 21, the first side surface section 25, and the second side surface section 26 of the pump body 2 that has been completely attached to the cradle device 230.

[0084] 12, cradle device 230 has an insertion opening 256b surrounded by mounting surface 41, first side wall 42, second side wall 43, and posture correction section 256. Pump body 2 is inserted into insertion opening 256b from the first end side in first direction X. This not only makes it possible for posture correction section 256 to correct the posture of pump body 2 when attached to cradle device 2, but also restricts the attachment direction of pump body 2 to cradle device 230.

[0085] Other configurations are the same as those of the cradle device 3 according to the first embodiment, and therefore description thereof will be omitted. The cradle device 230 having such a configuration can also obtain the same effects as those of the cradle device 3 according to the first embodiment described above.

[0086] In the cradle devices 130, 230 according to the second and third embodiments described above, the posture correcting units 156, 157, 256 are larger than the posture correcting units 56, 57 according to the first embodiment. As a result, in the cradle devices 130, 230 according to the second and third embodiments, the posture of the pump body 2 when attached can be reliably corrected.

[0087] In contrast, in the cradle device 3 according to the first embodiment, the posture correcting units 56, 57 are smaller than the posture correcting units 156, 157, 256 according to the second and third embodiments, and are abutted against corners of the pump body 2. In other words, the posture correcting units 56, 57 according to the first embodiment can protrude less from the housing 11 of the pump body 2 than the posture correcting units 156, 157, 256 according to the second and third embodiments. This makes it possible to prevent the patient's clothing, etc. from getting caught on the posture correcting units 56, 57 when using the medicinal solution administration device 1.

[0088] The above describes the embodiments of the present invention, including their effects. However, the drug solution administration device of the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the invention as defined in the claims.

[0089] In the above-described embodiment, an insulin pump that administers insulin has been described as an example of application of the medicinal liquid administration device, but the present invention is not limited to this. The medicinal liquid to be administered may be various other medicinal liquids, such as analgesics, anti-cancer drugs, HIV drugs, iron chelating drugs, and drugs for treating pulmonary hypertension. Furthermore, the present invention is not limited to medicinal liquid administration devices that are attached to the patient's skin, but may also be applied to other devices that are used in combination with a cradle device that can be attached to the patient's clothing or belongings. Examples of such devices include a body fluid component measuring device used to monitor blood glucose levels, and a patient information collecting device that collects information such as heart rate and step count. Needless to say, the component connection function allows for versatile use.

[0090] In this specification, the words "parallel" and "orthogonal" are used, but these do not mean only "parallel" and "orthogonal" in the strict sense, but also include "parallel" and "orthogonal" and may also mean a "substantially parallel" or "substantially orthogonal" state within a range in which the functions can be exerted. [Explanation of symbols]

[0091] 1...medicinal solution administration device, 2...pump body, 3, 130, 230...cradle device, 6...connection port, 11...housing, 12...connection needle tube, 13...liquid supply piping, 14...medicinal solution storage section, 15...drive section, 16...power supply section, 17...plunger mechanism, 18...transmission mechanism, 21...upper surface section, 22...bottom surface section, 23...front surface section, 24...back surface section, 25...first side surface section, 26...second side surface section, 27...bottom storage section, 27a...wall surface, 28...connection port, 28a...tubular hole, 31...engaging protrusion, 32...sliding groove section, 33...attachment detection switch, 34...detection groove section, 35...first guide groove section, 35a...extension section, 36...first engagement hook section, 37...Second guide groove portion, 38...Second engaging hook portion, 41...Placement surface portion, 42...First side wall portion, 43...Second side wall portion, 44...Third side wall portion, 51...First guide rail, 52...Detection rail, 53...Sliding rail, 54...Fitting hole, 55...Mounting portion, 56, 57, 156, 157, 256...Posture correction portion (protrusion), 81...Port body, 81a...Connection portion, 82...Rubber stopper, 83...Cannula, 256b...Insertion port, X...First direction (mounting direction), Y...Second direction (width direction), Z...Third direction (up and down direction)

Claims

1. a pump body including a chemical liquid storage section filled with a chemical liquid, a liquid supply pipe connected to the chemical liquid storage section, and a housing accommodating these; a cradle device having a mounting surface on which the pump body is placed, the cradle device having a mounting surface on which the pump body is detachably mounted by sliding the pump body in a first direction; a connection port having a port body connected to the liquid supply pipe and a cannula insertable into a living body, the connection port being attached to the placement surface portion; The housing includes: a bottom surface portion to be placed on the placement surface portion; an upper surface portion facing the bottom surface portion; a side surface portion that is continuous with both end portions of the bottom surface portion and the top surface portion in a second direction perpendicular to the first direction and connects the bottom surface portion and the top surface portion; The cradle device a first side wall portion and a second side wall portion that are erected in a third direction that is substantially perpendicular to both the first direction and the second direction from both end portions of the mounting surface portion in the second direction and that face the side surface portion; a first posture correcting portion that abuts against or faces a corner where the top surface portion and the side surface portion of the housing are connected, and a second side wall portion opposed to the first side wall portion in the second direction is provided with a second posture correction portion that abuts against or faces a corner portion where the top surface portion and the side surface portion of the housing are connected; the first posture correcting portion and the second posture correcting portion are curved so that ends of the first posture correcting portion and the second posture correcting portion overlap with the placement surface portion in a top view of the placement surface portion seen from a direction in which the first side wall portion and the second side wall portion are erected, the first posture correction unit and the second posture correction unit are disposed upstream of the connection port attached to the cradle device in the first direction, the first posture correcting unit and the second posture correcting unit face each other in the second direction, A first end of the first posture correcting portion and a first end of the second posture correcting portion are formed at the same position in the first direction. Drug administration device.

2. a protruding guide rail formed parallel to the first direction is provided on one of the first side wall portion and the second side wall portion of the cradle device and the housing of the pump body; a guide groove portion that slidably engages with the guide rail is provided on the first side wall portion and the second side wall portion of the cradle device and the other of the housing of the pump main body; The first posture correcting unit and the second posture correcting unit are disposed upstream in the first direction from the guide rail or the guide groove provided on the first side wall unit and the second side wall unit. The drug solution administration device according to claim 1 .

3. The first posture correcting portion and the second posture correcting portion protrude from the end portions of the first side wall portion and the second side wall portion opposite to the placement surface portion in the third direction and the second direction, and face or abut against the top surface portion of the housing. The drug solution administration device according to claim 1 or 2.

4. The first posture correction unit and the second posture correction unit are plate-shaped members that come into contact with the corners of the housing. The drug solution administration device according to any one of claims 1 to 3.

5. The first posture correcting portion and the second posture correcting portion are formed to match the shape of the corner portion of the housing. The drug solution administration device according to any one of claims 1 to 4.

6. The corners of the housing are curved. The drug solution administration device according to any one of claims 1 to 5.

7. A cradle device to which a pump body for administering a drug solution is detachably attached, a placement surface portion whose lower surface is attached to the surface of a living body; a mounting portion provided on the placement surface portion and capable of connecting to a connection port having a cannula that can be inserted into the living body; a pair of side walls that are erected from an end of the mounting surface in a direction away from the surface of the living body and that face each other; the pair of side wall portions each have a protruding portion that further protrudes in a direction away from the biological surface, the protruding portion is curved so that an end of the protruding portion overlaps the placement surface portion in a top view of the placement surface portion seen from a direction in which the pair of side wall portions are erected, the protrusion is disposed upstream of the connection port attached to the cradle device in a first direction, which is a sliding direction of the pump body; the two protrusions provided on the pair of side wall portions face each other in a second direction perpendicular to the first direction, The first ends of the two protrusions are formed at the same position in the first direction. Cradle device.

Images