Cap set

Abstract

This invention provides a cap set that can improve hygiene when sealing one end of the cylindrical part of an instrument with a cap. [Solution] The cap set 1 comprises a case 20 and a cap 10. The cap 10 is housed in a housing hole 23 of the case 20 and is configured to be removable from the case 20 through an opening in the case 20. The cap 10 is attached to the syringe 30 by rotating relative to the nozzle 31 of the syringe 30 while housed in the internal space of the case 20, thereby closing one end of the nozzle 31.

Description

Technical Field

[0001] The present invention relates to a cap set for closing one end of a cylindrical portion of an instrument.

Background Art

[0002] Conventionally, as a cap for a syringe, the one described in Patent Document 1 is known. This cap is attached to a syringe to close the nozzle of the syringe and includes an attachment / detachment operation portion and a leg portion. The leg portion is configured in a hollow cylindrical shape, and a male screw portion is formed on its outer peripheral surface. When an operator attaches the cap to the syringe, while holding the attachment / detachment operation portion of the cap with a finger, the male screw portion of the leg portion is fitted into the female screw portion of the syringe while covering the leg portion over the nozzle. Thereby, the nozzle of the syringe is closed by the cap.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] According to the above conventional cap, when an operator closes the nozzle of the syringe with the cap, since it is necessary to hold the attachment / detachment operation portion of the cap with his / her finger, there is a risk that the hygiene level of the syringe may decrease after the nozzle is closed by the cap. This problem occurs not only in medical instruments such as syringes but also in instruments other than medical instruments when closing one end of a cylindrical portion of an instrument with a cap.

[0005] The present invention has been made to solve the above problems, and an object thereof is to provide a cap set that can improve the hygiene level when closing one end of a cylindrical portion of an instrument with a cap.

Means for Solving the Problems

[0006] To achieve the above objective, the invention according to claim 1 is a cap set comprising a case having an opening, and a cap housed in the internal space of the case, configured to be removable from the case through the opening of the case, and for closing one end of the cylindrical portion of the device, wherein the cap is configured to close one end of the cylindrical portion while housed in the internal space of the case, as the case moves relative to the cylindrical portion.

[0007] According to this cap set, the cap is configured to be able to close one end of the cylindrical part of the instrument while it is housed in the internal space of the case, by moving the case relative to the cylindrical part. As a result, the operator can close one end of the cylindrical part of the instrument with the cap by manipulating the case to move relative to the cylindrical part without touching the cap itself. Consequently, the hygiene level when closing one end of the cylindrical part of the instrument with the cap can be improved.

[0008] In the present invention, the case comprises a case body having an inner hole as an internal space, and a first fitting portion formed on the bottom wall surface of the inner hole of the case body. The cap is configured to be housed in the inner hole of the case and comprises a cap body for closing one end of the cylindrical portion, and a second fitting portion formed on the end of the cap body on the side that houses into the inner hole of the case, which can be fitted into the first fitting portion when the cap body is housed in the inner hole of the case. Preferably, the first fitting portion is composed of one of a convex portion and a concave portion that can fit together with each other, and the second fitting portion is composed of the other of a convex portion and a concave portion.

[0009] With this cap set, when the cap body of the cap is placed in the inner hole of the case body, the second fitting part fits into the first fitting part. As a result, after the cap is placed in the case, the cap can be held in place by the case so that it does not wobble. Consequently, the workability when the worker closes one end of the cylindrical part of the tool with the cap can be improved. Furthermore, these effects can be obtained with a simple configuration of a convex part and a concave part.

[0010] In the present invention, the case comprises a case body having an inner hole as an internal space, and a first projection projecting inward from a predetermined portion of the peripheral wall surface of the inner hole of the case body; the cap comprises a cap body configured to be housed in the inner hole of the case and for closing one end of the cylindrical portion, a male screw portion formed on the end of the cap body opposite to the side housed in the inner hole of the case and capable of being screwed into the female screw portion of the device, and a second projection projecting outward from the outer peripheral surface of the cap body at a portion spaced apart from the male screw portion in the extending direction of the cap body; the first projection is positioned so as to come into contact with the second projection of the cap when the case rotates relative to the cylindrical portion while the cap body is housed in the inner hole of the case; and the male screw portion of the cap is preferably configured to be screwed into the female screw portion when it rotates relative to the cylindrical portion due to the contact between the first and second projections.

[0011] With this cap set, when the case rotates relative to the cylindrical part while the cap body is housed in the inner hole of the case, the first projection of the case comes into contact with the second projection of the cap. Furthermore, the male threaded portion of the cap rotates relative to the cylindrical part due to this contact, and is screwed into the female threaded portion. As a result, the cap is attached to the device with one end of the cylindrical part closed. In this way, when the case is rotated, the first projection comes into contact with the second projection, transmitting the torque caused by the rotation of the case to the male threaded portion of the cap, and allowing the male threaded portion of the cap to be screwed into the female threaded portion of the device. In other words, torque transmission for attaching the cap to the cylindrical part can be achieved with a simple configuration of first and second projections.

[0012] In the present invention, it is preferable that the first projection is composed of a plurality of first projections, and the second projection is composed of a plurality of second projections.

[0013] With this cap set, the torque resulting from the rotation of the case can be transmitted more reliably and in a balanced manner to the male threaded portion of the cap by having multiple first protrusions contact multiple second protrusions.

[0014] In the present invention, it is preferable that the plurality of first protrusions extend along the case body, and that the ends of the plurality of first protrusions on the opening side are tapered toward the opening side, and that the height of the protrusion from the case body decreases further toward the opening side.

[0015] According to this cap set, the opening-side ends of the multiple first protrusions are shaped such that the protrusion height from the case body decreases as it approaches the opening. As a result, when the cap body is fitted into the inner hole of the case body, even if the opening-side ends of the multiple first protrusions come into contact with the multiple second protrusions, the multiple first protrusions will not get caught on the multiple second protrusions, and the cap body can be smoothly fitted into the case body.

[0016] In the present invention, the plurality of second protrusions extend along the cap body, and it is preferable that the ends of the plurality of second protrusions opposite to the male thread portion are formed such that the protrusion height from the cap body decreases as they move away from the male thread portion.

[0017] According to this cap set, the ends of the multiple second protrusions opposite to the male threaded portion are formed such that the protrusion height from the cap body decreases as it moves away from the male threaded portion. As a result, when the cap body is fitted into the inner hole of the case body, even if the ends of the multiple second protrusions opposite to the male threaded portion come into contact with the opening ends of the multiple first protrusions in the inner hole, the multiple first protrusions will not get caught on the multiple second protrusions, and the cap body can be fitted into the case body smoothly.

[0018] In the present invention, it is preferable that the ends of the multiple second protrusions opposite to the male threaded portion are tapered toward the opposite side of the male threaded portion.

[0019] According to this cap set, the ends opposite to the multiple second protrusions are formed such that the protrusion height from the cap body decreases as they move away from the male thread portion, and are also tapered toward the opposite side of the male thread portion. This more reliably prevents the multiple first protrusions from catching on the multiple second protrusions, allowing the cap body to be housed more smoothly in the case body.

[0020] In the present invention, the device is preferably a medical device.

[0021] Medical devices generally require a high level of hygiene. This cap set addresses this requirement by allowing the cap to be attached to the medical device without the worker having to touch the cap itself, thereby sealing the tubular portion of the medical device. This ensures a high level of hygiene while attaching the cap to the tubular portion of the medical device. [Brief explanation of the drawing]

[0022] [Figure 1] It is a perspective view showing the configuration of the cap set according to the first embodiment of the present invention. [Figure 2] It is a front view showing the configuration of the cap. [Figure 3] It is a side view showing the configuration of the cap. [Figure 4] It is a view showing a cross section taken along line IV-IV of FIG. 3. [Figure 5] It is a front view showing the configuration of the case. [Figure 6] It is a side view showing the configuration of the case. [Figure 7] It is a view showing a cross section taken along line VII-VII of FIG. 6. [Figure 8] It is a side view showing the state where the cap is housed in the case. [Figure 9] It is a view showing a cross section taken along line IX-IX of FIG. 8. [Figure 10] It is a cross-sectional view showing the state before the cap is attached to the syringe. [Figure 11] It is a cross-sectional view showing the state after the cap is attached to the syringe. [Figure 12] It is a perspective view showing the configuration of the cap set according to the second embodiment of the present invention. [Figure 13] It is a front view showing the configuration of the cap of the second embodiment. [Figure 14] It is a side view showing the configuration of the cap of the second embodiment. [Figure 15] It is a view showing a cross section taken along line XV-XV of FIG. 14. [Figure 16] It is a front view showing the configuration of the case of the second embodiment. [Figure 17] It is a side view showing the configuration of the case of the second embodiment. [Figure 18] It is a view showing a cross section taken along line XVIII-XVIII of FIG. 17. [Figure 19] It is a side view showing the state where the cap of the second embodiment is housed in the case. [Figure 20] It is a view showing a cross section taken along line XX-XX of FIG. 18. [Modes for carrying out the invention]

[0023] The cap set according to the first embodiment of the present invention will be described below with reference to the drawings. As shown in Figure 1, the cap set 1 of this embodiment comprises a cap 10 and a case 20.

[0024] As described later, the cap 10 is attached to the syringe 30 with the nozzle 31 of the syringe 30 (see Figure 10, described later) closed. This attachment is performed by the operator manipulating the case 20 while the cap 10 is housed inside the case 20.

[0025] As shown in Figures 2-4, the cap 10 comprises a cap body 11, four second protrusions 12, and a male screw portion 13. In the following description of the cap 10, the right side of Figure 2 will be referred to as "right," and the left side of Figure 2 will be referred to as "left."

[0026] The cap body 11 is constructed in a hollow cylindrical shape, and inside it, there are a housing hole 14 and a fitting hole 15 formed on the left and right sides. These housing hole 14 and fitting hole 15 are configured to be isolated from each other and not communicate with each other.

[0027] The housing hole 14 has a circular cross-section and extends along the axial direction of the cap body 11. It has a tapered shape, with its diameter decreasing towards the left, and the left end is configured to show a greater decrease in diameter than the rest of the hole. As will be described later, when the cap 10 is attached to the syringe 30, the nozzle 31 of the syringe 30 is housed in this housing hole 14, thereby closing the nozzle 31 with the cap 10.

[0028] Furthermore, the fitting hole 15 has a circular cross-section and extends along the axial direction of the cap body 11, and has a tapered shape in which the diameter decreases towards the right. As will be described later, when the cap 10 is inserted into the case 20 to the storage position (see Figure 9), the fitting projection 25 of the case 20, which will be described later, is fitted into this fitting hole 15. In this embodiment, the fitting hole 15 corresponds to the second fitting portion.

[0029] On the other hand, the four second protrusions 12 protrude in a plate-like manner from the outer circumferential surface of the cap body 11 in the portion from the center to the left end of the cap body 11, extending along the axial direction of the cap body 11 and arranged at equal intervals (90°) from one another along the circumferential direction of the cap body 11. The radial height of each of the four second protrusions 12 is set to a size that does not interfere with the inner wall surface of the case 20 when the cap 10 is housed in the case 20.

[0030] Furthermore, each second projection 12 has a curved, chamfered tip, and the left end 12a is tapered towards the left, as shown in Figure 2, so that the protrusion height from the cap body 11 decreases towards the left. In addition, the edge of the end 12a is curved when viewed from the front. The above shapes of the second projections 12 are intended to facilitate the process of fitting the cap 10 into the case 20, as will be described later. When the cap 10 is fitted into the case 20, it is inserted into the case 20 from the end 12a side, so in the following description, the end 12a of each second projection 12 will be referred to as the "insertion side end 12a".

[0031] Furthermore, the male threaded portion 13 is provided at the right end of the cap body 11. As will be described later, the cap 10 is attached to the syringe 30 by screwing this male threaded portion 13 into the female threaded portion 33 of the syringe 30 (see Figures 10-11).

[0032] Next, we will explain Case 20 while referring to Figures 5-7. In the following explanation of Case 20, the right side of Figure 5 will be referred to as "right," and the left side of Figure 5 will be referred to as "left."

[0033] As will be described later, this case 20 is for housing the cap 10 when attaching the cap 10 to the syringe 30. The operation of attaching the cap 10 to the syringe 30 is performed by operating the case 20 while the cap 10 is housed inside the case 20.

[0034] The case 20 comprises a case body 21 and eight ribs 22, etc. The case body 21 is formed in a bottomed cylindrical shape and includes a handle portion 21a and a large-diameter portion 21b. The handle portion 21a is the part that the operator holds with their fingers when attaching the cap 10 to the syringe 30, and extends from the left end of the case body 21 to the right with a constant diameter.

[0035] The eight ribs 22 protrude in a plate-like manner from the outer circumferential surface of the handle portion 21a, extending at a constant height along the axial direction of the case body 21, and are arranged at equal intervals (45°) from one another along the circumferential direction of the case body 21. These ribs 22 are integrally formed with the case body 21 and function as an anti-slip feature when an operator holds the handle portion 21a with their fingers and rotates the case.

[0036] The large-diameter portion 21b is formed to have a larger diameter than the handle portion 21a, extends to the right in a continuous manner with the handle portion 21a, and its right end is configured in a flange shape.

[0037] The case body 21 has a housing hole 23, four first protrusions 24, and a fitting protrusion 25 formed inside. The housing hole 23 is for housing the cap 10 inside the case body 21 and opens at the right end of the large diameter portion 21b. The inner diameter of the housing hole 23 is larger on the large diameter portion 21b side than on the handle portion 21a side. This is to facilitate the process of housing the cap 10 inside the case 20. In this embodiment, the housing hole 23 corresponds to the internal space and inner hole.

[0038] The four first protrusions 24 project radially from the inner circumferential surface of the case body 21 from near the center to the left end of the housing hole 23, extending along the axial direction of the case body 21 and arranged at equal intervals (90°) from one another along the circumferential direction of the housing hole 23. The radial height of each of the four first protrusions 24 is set to a size that does not interfere with the outer circumferential surface of the cap body 11 when the cap 10 is housed in the case 20.

[0039] Furthermore, as shown in Figure 7, the opening-side end 24a of each first projection 24 on the case body 21 (hereinafter referred to as the "opening-side end 24a") tapers toward the opening side of the case body 21, and is formed such that the height of the projection from the inner circumferential surface of the housing hole 23 decreases as it approaches the opening side. The above shape of the opening-side end 24a of the first projection 24 is intended to facilitate the process of housing the cap 10 into the case 20, as will be described later.

[0040] The fitting projection 25 protrudes from the center of the bottom wall of the housing hole 23 toward the opening side of the case body 21, and is cylindrical with a lid, with the end face on the opening side formed in a hemispherical shape that is convex toward the opening side. When the cap 10 is housed in the case 20, this fitting projection 25 fits into the fitting hole 15 of the cap 10, and this fitting firmly holds the cap 10 in place by the case 20 so that it does not wobble when housed in the case 20. In this embodiment, the fitting projection 25 corresponds to the first fitting portion.

[0041] Next, the syringe 30 to which the cap 10 is attached will be described. As shown in Figure 10, the syringe 30 comprises a nozzle 31 and an outer cylinder portion 32. The nozzle 31 is located at the tip of the syringe 30 and has a tapered shape, with its diameter decreasing towards the tip. The outer cylinder portion 32 is cylindrical and concentric with the nozzle 31, and a female thread portion 33 is formed on its inner circumferential surface. This female thread portion 33 is configured to be screwed onto the male thread portion 13 of the cap 10. In this embodiment, the syringe 30 corresponds to the instrument and medical device, and the nozzle 31 corresponds to the cylindrical portion of the instrument and medical device.

[0042] Next, referring to Figures 8-11, we will explain the process of attaching the cap 10 to the syringe 30 using the cap set 1 configured as described above. In the following explanation of the process, the right side of Figure 9 will be referred to as "right," and the left side of Figure 9 will be referred to as "left."

[0043] First, the cap 10 is inserted into the case 20 through the housing hole 23 by an operator (not shown) in the state shown in Figures 8 and 9. At this time, as mentioned above, because the insertion end 12a of the second projection 12 and the opening end 24a of the first projection 24 are tapered and decrease in height, even if the second projection 12 of the cap 10 temporarily comes into contact with the first projection 24 of the case 20, the second projection 12 does not get locked onto the first projection 24, but moves between the two adjacent first projections 24, 24. As a result, the cap 10 is smoothly inserted to the housing position shown in Figure 9.

[0044] Furthermore, when the cap 10 is inserted into the case 20 to the storage position shown in Figure 9, the lower end of the cap 10 abuts against the bottom wall of the storage hole 23, and the fitting projection 25 of the case 20 fits into the fitting hole 15 of the cap 10. As a result, when the cap 10 is stored in the case 20, it is firmly held in place by the case 20 so as not to wobble.

[0045] Next, while the operator holds the handle portion 21a of the case 20 with their fingers, they move it in the direction of arrow Y1 in Figure 10, rotating the case 20 relative to the syringe 30. As a result, the second projection 12 of the cap 10 comes into contact with the first projection 24 of the case 20, causing the cap 10 to rotate together with the case 20. Consequently, the male thread portion 13 of the cap 10 screws into the female thread portion 33 of the syringe 30. As a result, as shown in Figure 11, the cap 10 is attached to the syringe 30 with the nozzle 31 housed within the housing hole 14, and the inner surface of the housing hole 14 in close contact with the outer surface of the nozzle 31. Consequently, the nozzle 31 is closed by the cap 10.

[0046] After the cap 10 is attached to the syringe 30 as described above, the worker moves the case 20 from the position indicated by the dashed line in Figure 11 to the position indicated by the solid line in the direction of arrow Y2, thereby detaching the case 20 from the cap 10 and completing the process of attaching the cap 10 to the syringe 30.

[0047] As described above, with the cap set 1 of this embodiment, the cap 10 can be attached to the syringe 30 in a state where the tip of the nozzle 31 of the syringe 30 is blocked by rotating the case 20 while holding it with your fingers, with the cap 10 stored in the case 20. As a result, the hygiene when blocking the tip of the nozzle 31 of the syringe 30 with the cap 10 can be improved.

[0048] Furthermore, the insertion-side end 12a of the second projection 12 of the cap 10 tapers toward the insertion side into the case 20, and the protrusion height from the cap body 11 decreases as it moves toward the insertion direction. The opening-side end 24a of the first projection 24 of the case 20 has a shape in which the width and height decrease further toward the opening side. As a result, when inserting the cap 10 into the case 20, even if the second projection 12 of the cap 10 temporarily comes into contact with the first projection 24 of the case 20, the second projection 12 is not locked to the first projection 24, and the second projection 12 can be moved between two adjacent first projections 24, 24. Consequently, the cap 10 can be smoothly inserted into the case 20 to its storage position.

[0049] Furthermore, when the cap 10 is housed in the case 20 to its storage position, the fitting projection 25 engages with the fitting hole 15. This allows the case 20 to hold the cap 10 in place, preventing it from wobbling after it has been housed in the case 20. As a result, the workability when the operator closes the tip of the syringe 30 nozzle 31 with the cap 10 can be improved. Moreover, these effects can be obtained with a simple configuration of a projection and a hole.

[0050] Furthermore, when the case 20 is rotated to attach the cap 10 to the syringe 30, the first projection 24 of the case 20 comes into contact with the second projection 12 of the cap 10, thereby transmitting the torque resulting from the rotation of the case 20 to the male threaded portion 13 of the cap 10, and allowing the male threaded portion 13 of the cap 10 to be screwed into the female threaded portion 33 of the syringe 30. In other words, torque transmission for attaching the cap 10 to the nozzle 31 can be achieved with the simple configuration of the first projection 24 and the second projection 12.

[0051] In the first embodiment, a structure in which a male threaded portion screws into a female threaded portion is used as a structure for attaching the cap to the device. However, a snap-fit ​​structure or a configuration in which a recessed portion and a convex portion fit together may be used instead.

[0052] Furthermore, while the first embodiment uses a syringe 30 as the instrument, a medical instrument or an industrial instrument other than a medical instrument that has a cylindrical part may be used instead. For example, a medical instrument such as a catheter may be used as the instrument, or an industrial instrument such as a dropper may be used.

[0053] Furthermore, while the first embodiment is an example in which the cap 10 is configured to have four second protrusions 12, the cap 10 may be configured to have three or fewer second protrusions 12, or five or more second protrusions 12. In this case, it is preferable to configure the number of second protrusions 12 and first protrusions 24 to be the same.

[0054] On the other hand, the first embodiment is an example in which the cap 10 is configured to have four first protrusions 24, but instead, the cap 10 may be configured to have three or fewer first protrusions 24, or five or more first protrusions 24. In this case, it is preferable to configure the number of first protrusions 24 and second protrusions 12 to be the same.

[0055] Furthermore, while the first embodiment is an example in which the cap 10 is provided with a fitting hole 15 and the case 20 is provided with a fitting projection 25, alternatively, the case 20 may be provided with a fitting hole and the cap 10 may be provided with a fitting projection that can be fitted into the fitting hole of the case 20.

[0056] The cap set according to the second embodiment of the present invention will now be described with reference to the drawings. As shown in Figure 12, the cap set 1A of this embodiment comprises a cap 10A and a case 20A. This cap 10A is attached to the syringe 30 in the same way as the cap 10 of the first embodiment described above, with the nozzle 31 of the syringe 30 (see Figure 10) closed.

[0057] Note that the cap 10A of this embodiment is configured identically to the cap 10 of the first embodiment described above, with a few exceptions, so the following explanation will focus on the differences. Also, in the cap 10A, components identical to those of the cap 10 of the first embodiment are given the same reference numerals, and their descriptions are omitted.

[0058] The cap 10A of this embodiment is configured as shown in Figures 13 to 15. As is clear from comparing Figures 13 to 15 with the previously mentioned Figures 2 to 4, the cap 10A of this embodiment differs from the previously mentioned cap 10 in that it has two second protrusions 12A, 12A, whereas the cap 10 has four second protrusions 12. In the following description of the cap 10A, the right side of Figure 13 will be referred to as "right," and the left side of Figure 13 will be referred to as "left."

[0059] These two second protrusions 12A, 12A are arranged symmetrically with respect to a plane passing through the central axis of the cap 10A. Each of the second protrusions 12A has a radial height greater than the second protrusion 12 of the cap 10 described above, and is sized so as not to interfere with the inner wall surface of the case 20A when the cap 10A is housed inside the case 20A.

[0060] Furthermore, each second projection 12A has a curved, chamfered tip, and its left end 12Aa (hereinafter referred to as the "insertion-side end 12Aa") has a curved edge when viewed from the front, as shown in Figure 13, and is formed so that the height of the projection from the cap body 11 decreases as it moves to the left. The shape of the second projection 12A described above is intended to facilitate the process of fitting the cap 10A into the case 20A.

[0061] Next, we will explain case 20A with reference to Figures 16-18. In the following explanation of case 20A, the right side of Figure 16 will be referred to as "right," and the left side of Figure 16 will be referred to as "left." Case 20A is for housing cap 10A when attaching it to syringe 30.

[0062] Case 20A comprises a case body 21A and four recesses 22A (only two are shown in Figure 16). The case body 21A has a flange-like shape at its right end, and the rest of it is a bottomed cylindrical shape, with the outer diameter gradually decreasing towards the left.

[0063] The four recesses 22A are formed to extend from the center of the case body 21 to the left end and are arranged at equal intervals (90°) from one another along the circumferential direction of the case body 21. These four recesses 22A function as anti-slip features when an operator holds the case 20A with their fingers and rotates it. The inner wall surface of the housing hole 23A corresponding to these four recesses 22A constitutes four first protrusions 24A, which will be described later.

[0064] The case body 21A has a housing hole 23A, four first protrusions 24A, and a fitting protrusion 25A formed inside. The housing hole 23A opens at the right end of the case body 21A, and its inner diameter is configured to increase towards the right. This is to facilitate the process of housing the cap 10A inside the case 20A. In this embodiment, the housing hole 23A corresponds to the internal space and inner hole.

[0065] The four first protrusions 24A are formed by portions of the inner wall surface of the housing hole 23A corresponding to the four recesses 22A described above. The four first protrusions 24A project radially from near the center to the left end of the inner circumferential surface of the housing hole 23A of the case body 21A, extend along the axial direction of the case body 21A, and are arranged at equal intervals (90°) from one another along the circumferential direction of the housing hole 23A.

[0066] Each of the four first protrusions 24A is sized such that its radial height does not interfere with the outer surface of the cap body 11 when the cap 10A is housed in the case 20A. Furthermore, as shown in Figure 18, each first protrusion 24A has a curved outer surface, and its opening end 24Aa is formed such that the height and width of its protrusion from the inner surface of the housing hole 23 decreases as it approaches the opening side of the case body 21A. The shape of the first protrusions 24A described above is intended to facilitate the process of housing the cap 10A in the case 20A, as will be described later.

[0067] The fitting projection 25A protrudes from the center of the bottom wall of the housing hole 23 toward the opening side of the case body 21, and is cylindrical with a lid, with the end face on the opening side formed in a curved shape that is convex toward the opening side. When the cap 10A is housed in the case 20A, this fitting projection 25A fits into the fitting hole 15 of the cap 10A, and this fitting firmly holds the cap 10A in place by the case 20A so that it does not wobble when housed in the case 20A. In this embodiment, the fitting projection 25A corresponds to the first fitting portion.

[0068] When attaching the cap 10A to the syringe 30 using the cap set 1A configured as described above, the operator first inserts the cap 10A into the case 20A through the housing hole 23 in the state shown in Figures 19 and 20. At this time, due to the aforementioned shapes of the insertion end 12Aa of the second projection 12A and the first projection 24A, even if the second projection 12A of the cap 10A temporarily comes into contact with the first projection 24A of the case 20A, the second projection 12A does not become locked to the first projection 24A, but moves smoothly between the two adjacent first projections 24A, 24A. As a result, the cap 10A is smoothly inserted to the housing position shown in Figure 20.

[0069] Furthermore, when the cap 10A is inserted into the case 20A to the storage position shown in Figure 20, the lower end of the cap 10A abuts against the bottom wall of the storage hole 23, and the fitting projection 25A of the case 20A fits into the fitting hole 15 of the cap 10A. As a result, when the cap 10A is stored inside the case 20A, it is firmly held in place by the case 20A so as not to wobble.

[0070] Next, while the operator holds the case 20A with their fingers, they rotate the case 20A relative to the syringe 30, causing the male threaded portion 13 of the cap 10A to screw onto the female threaded portion 33 of the syringe 30 (not shown). As a result, similar to Figure 11 described above, the cap 10A is attached to the syringe 30 with the nozzle 31 housed in the housing hole 14 and the inner circumferential surface of the housing hole 14 in close contact with the outer circumferential surface of the nozzle 31. As a result, the nozzle 31 is closed by the cap 10A.

[0071] As described above, the cap set 1A of the second embodiment provides the same effects as the cap set 1 of the first embodiment. Specifically, with the cap 10A stored in the case 20A, the cap 10A can be attached to the syringe 30 while blocking one end of the nozzle 31 of the syringe 30 by pinching and manipulating the case 20A with one's fingers. As a result, the hygiene of blocking the tip of the nozzle 31 of the syringe 30 with the cap 10A can be improved.

[0072] Furthermore, the insertion-side end 12Aa of the second projection 12A of the cap 10A tapers toward the insertion side into the case 20A, and the protrusion height from the cap body 11 decreases as it moves toward the insertion direction. The opening-side end 24Aa of the first projection 24A of the case 20A also has a shape in which the width and height decrease further toward the opening side. As a result, when inserting the cap 10A into the case 20A, even if the second projection 12A of the cap 10A temporarily comes into contact with the first projection 24A of the case 20A, the second projection 12A is not locked to the first projection 24A, and the second projection 12A can be moved between the two first projections 24A, 24A. Consequently, the cap 10A can be smoothly inserted into the case 20A to its storage position.

[0073] Furthermore, when the cap 10A is housed in the case 20A to its storage position, the fitting projection 25A engages with the fitting hole 15, thereby holding the cap 10A in place so that it does not wobble after being housed in the case 20A. As a result, the workability when the operator closes one end of the syringe 30 nozzle 31 with the cap 10A can be improved. Moreover, these effects can be obtained with a simple configuration of a projection and a hole.

[0074] Furthermore, when attaching the cap 10A to the syringe 30, if the case 20A is grasped and rotated, the first projection of the case 20A comes into contact with the first projection 24A of the cap 10A, thereby transmitting the torque resulting from the rotation of the case 20A to the male threaded portion 13 of the cap 10A, and allowing the male threaded portion 13 of the cap 10A to be screwed into the female threaded portion 33 of the syringe 30. In other words, torque transmission for attaching the cap 10A to the nozzle 31 can be achieved with the simple configuration of the first projection and the first projection 24A. [Explanation of symbols]

[0075] 1 Cap Set 10 caps 11 Cap body 12 Second protrusion 12a The end of the second projection opposite the male threaded portion 13 Male threaded section 15. Fitting hole (second fitting part) 20 cases 21 Case body 23. Enclosure hole (internal space, inner hole) 24 1st protrusion 24a End of the first projection on the opening side 25. Attachment projection (first attachment part) 1A Cap Set 10A Cap 12A 2nd protrusion 12Aa The end opposite the male thread portion of the second projection 20A Case 21A Case Body 23A Enclosure hole (internal space, inner hole) 24A 1st protrusion 24Aa End of the first projection on the opening side 25A Fitting protrusion (1st fitting part) 30 Syringes (medical devices) 31. Nozzle (cylindrical part) 33 Female thread section

Claims

1. A cap set comprising a case having an opening, and a cap housed in the internal space of the case, configured to be removable from the case through the opening, and for closing one end of the cylindrical part of the device, The cap set is characterized in that the cap is configured to be able to close one end of the cylindrical portion while housed in the internal space of the case, as the case moves relative to the cylindrical portion.

2. In the cap set according to claim 1, The case comprises a case body having an internal hole as an internal space, and a first fitting portion formed on the bottom wall surface of the internal hole of the case body. The cap is configured to be housed in the inner hole of the case and comprises a cap body for closing one end of the cylindrical portion, and a second fitting portion formed on the end of the cap body on the side that houses into the inner hole of the case, which can be fitted into the first fitting portion when the cap body is housed in the inner hole of the case. The cap set is characterized in that the first fitting portion is composed of one of a convex portion and a concave portion that can be fitted together with each other, and the second fitting portion is composed of the other of the convex portion and the concave portion.

3. In the cap set according to claim 1, The case comprises a case body having an internal hole as an internal space, and a first projection that protrudes inward from a predetermined portion of the peripheral wall surface of the internal hole of the case body. The cap is configured to be housed in the inner hole of the case and comprises a cap body for closing one end of the cylindrical portion, a male threaded portion formed on the end of the cap body opposite to the side housed in the inner hole of the case and capable of being screwed into the female threaded portion of the device, and a second projection on the outer circumferential surface of the cap body that protrudes outward at a portion spaced apart from the male threaded portion in the extending direction of the cap body. The first projection is positioned such that, with the cap body housed in the inner hole of the case, the case rotates relative to the cylindrical portion, causing it to contact the second projection of the cap. The cap set is characterized in that the male threaded portion of the cap is configured to be screwed onto the female threaded portion by rotating relative to the cylindrical portion due to the contact between the first projection and the second projection.

4. In the cap set according to claim 3, The first projection is composed of a plurality of first projections, The cap set is characterized in that the second projection is composed of a plurality of second projections.

5. In the cap set according to claim 4, The cap set is characterized in that the plurality of first protrusions extend along the case body, the ends of the plurality of first protrusions on the opening side are tapered toward the opening side, and the height of the protrusion from the case body decreases further toward the opening side.

6. In the cap set according to claim 4, The cap set is characterized in that the plurality of second protrusions extend along the cap body, and the ends of the plurality of second protrusions opposite to the male screw portion are formed such that the height of the protrusion from the cap body decreases as it moves away from the male screw portion.

7. In the cap set according to claim 6, A cap set characterized in that the ends of the plurality of second protrusions opposite to the male threaded portion are tapered toward the opposite side of the male threaded portion.

8. In the cap set according to any one of claims 1 to 7, The aforementioned device is a cap set characterized by being a medical device.

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