JP2015167618A - Syringe set, pre-filled syringe set, syringe cap, and cover body for syringe cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a syringe cap which can be adapted to various kinds of use modes while suppressing a manufacturing cost.SOLUTION: A syringe cap comprises: an elastic plug body 30 which is configured to be detachably attachable to a nozzle part 12 of a barrel 10A of a syringe and is made of an elastic member; and a cover body 40 which is configured to be attachable to the elastic plug body 30 and is made of a rigid member. The elastic plug body 30 includes a plug part 31 and a flange part 32. The cover body 40 is made of a bottomed cylindrical member including a cylindrical part 41 enclosing the plug part 31, and the cylindrical part 41 has a plurality of engaging parts for engaging the flange part 32 while the cover body is attached to the elastic plug body 30. Each of the plurality of engaging parts has a cantilever part 44 configured to be elastically deformed by forming a cut part 41b on the cylindrical part 41 and a nail part 45 configured to be locked on the flange part 32 by being raised from a tip end of the cantilever part 44.

Description

  The present invention includes a syringe cap configured to be capable of being attached to a barrel of a syringe, a cover body of a syringe cap provided in the syringe cap (hereinafter also simply referred to as a cover body), and the syringe cap. The present invention relates to a syringe set and a prefilled syringe set provided with the syringe cap.

  Conventionally, an elastic stopper made of an elastic member has been used as a cap for a syringe for closing a discharge port provided in a nozzle portion of a syringe barrel. In the prefilled syringe prefilled with the medicine, the elastic plug body is provided by being attached to the barrel to seal the medicine, and in the syringe set not prefilled with the medicine, an accessory is provided. May be provided.

  Japanese Patent Application Laid-Open No. 2013-78443 (Patent Document 1) includes a cover made of a hard member provided so as to cover the above-described elastic stopper in addition to the above-described elastic stopper. It is disclosed. The cover body disclosed in Patent Document 1 is provided for the purpose of determining whether or not the prefilled syringe has already been opened, but the cover body is removed when the syringe cap is removed. By holding it, there is no need to hold the elastic plug directly with your fingers, so it is possible to prevent the medicine from adhering to your fingers or to remove the syringe cap easily. It is also what plays.

JP 2013-78443 A

  In general, when considering the usage mode of a syringe set or a prefilled syringe, it is not always necessary to determine whether or not it has already been opened, or a case in which there is no particular problem even if a drug adheres to a finger Is also envisaged. In addition, it is assumed that only the elastic stopper is attached to the barrel of the syringe in advance, and then the cover is attached to the elastic stopper as necessary.

  From the viewpoint of manufacturing, the elastic plug body and the cover body are designed in advance as common parts when constructing a product lineup suitable for each usage mode in consideration of various usage modes. In addition, by making it possible to select whether or not the common parts are attached or attached as accessories, it is possible not only to improve the flexibility of the parts but also to reduce the manufacturing cost. A significant reduction effect can also be obtained.

  In the light of the above situation, the cover body disclosed in Patent Document 1 is preliminarily fitted to the elastic plug body so that it cannot be removed, and only the elastic plug body is previously attached to the barrel of the syringe. It is not constructed so that it can be attached later in the attached state. Therefore, although it is beneficial under a specific usage mode, it cannot be said to be suitable for all of the above-mentioned various usage modes. It becomes a thing with scarce property, and leads to the increase in manufacturing cost.

  Accordingly, the present invention has been made to solve the above-described problems, and is a syringe cap that can be adapted to various usage modes while suppressing manufacturing costs, and for a syringe provided in the syringe cap. It aims at providing the cover body of a cap, the syringe set provided with the said cap for syringes, and the prefilled syringe set provided with the said cap for syringes.

  The syringe set based on this invention is equipped with the syringe containing a barrel and a plunger, and the cap for syringes which can block | close the discharge outlet provided in the nozzle part of the said barrel. The syringe cap has an elastic plug made of an elastic member configured to be detachably attached to the nozzle portion, and a cover member made of a hard member configured to be attached to the elastic plug. Including. The elastic plug body, when attached to the nozzle portion, has a plug portion that covers the discharge port at one end in the axial direction, and a flange portion that protrudes outward from the outer peripheral surface of the plug portion. doing. The cover body is positioned on a side opposite to the one end of the plug portion in a state of being attached to the elastic plug body and a cylindrical portion surrounding the plug portion and in a state of being attached to the elastic plug body. It consists of a bottomed cylindrical member having a bottom portion covering the other end. The cylindrical portion is provided with a plurality of locking portions along the circumferential direction for locking the collar portion in a state where the cover body is attached to the elastic plug body. Each of the plurality of locking portions is provided so as to extend along the axial direction of the cylindrical portion by forming a notch portion in the cylindrical portion, so that the radial direction of the cylindrical portion The cantilever portion is configured to be elastically deformable at the top and the cantilever portion is erected from the tip of the cantilever portion toward the inside in the radial direction of the cylindrical portion, so that the hook portion can be hooked. And nail part.

  In the syringe set according to the present invention, in the state where the cover body is attached to the elastic plug body, the first protrusion that contacts the outer peripheral surface of the flange portion is the inner peripheral surface of the cylindrical portion. It is preferable that a plurality are provided in the circumferential direction on the top.

  In the syringe set according to the present invention, the barrel may have a cylindrical luer lock portion that surrounds the nozzle portion. In that case, it is preferable that the one end of the plug portion is inserted between the nozzle portion and the luer lock portion in a state where the elastic plug body is attached to the nozzle portion. When the elastic plug is attached to the nozzle portion and the cover body is attached to the elastic plug, the elastic stopper is disposed in contact with or close to the outer peripheral surface of the luer lock portion. It is preferable that a plurality of second protrusions are provided in the circumferential direction on the inner peripheral surface of the cylindrical part.

  In the syringe set according to the present invention, a plurality of protrusions extending along the axial direction of the cylindrical portion may be provided in the circumferential direction on the inner peripheral surface of the cylindrical portion. In this case, it is preferable that each of the plurality of protrusions constitutes the first protrusion and the second protrusion.

  In the syringe set according to the present invention, it is preferable that the plurality of the locking portions are equally provided along the circumferential direction of the cylindrical portion.

  The prefilled syringe set based on this invention is equipped with the syringe set based on the said this invention, and a chemical | medical agent. In the prefilled syringe set according to the present invention, the plunger is attached to the barrel, and the elastic plug is attached to the nozzle portion, whereby the medicine is filled in a sealed state in the barrel. ing.

  In the prefilled syringe set according to the present invention, the cover body may be further attached to the elastic plug body.

  The syringe cap according to the present invention can close the discharge port provided in the nozzle portion of the syringe barrel, and can be detachably attached to the nozzle portion of the syringe barrel. And an elastic plug body made of an elastic member and a cover body made of a hard member that can be attached to the elastic plug body. In the state where the elastic plug is attached to the nozzle part of the barrel of the syringe, the plug part capable of covering the discharge port provided in the nozzle part of the syringe at one end in the axial direction, and the outer peripheral surface of the plug part And a buttock projecting outward. The cover body is positioned on a side opposite to the one end of the plug portion in a state of being attached to the elastic plug body and a cylindrical portion surrounding the plug portion and in a state of being attached to the elastic plug body. It consists of a bottomed cylindrical member having a bottom portion covering the other end. The cylindrical portion is provided with a plurality of locking portions along the circumferential direction for locking the collar portion in a state where the cover body is attached to the elastic plug body. Each of the plurality of locking portions is provided so as to extend along the axial direction of the cylindrical portion by forming a notch portion in the cylindrical portion, so that the radial direction of the cylindrical portion The cantilever portion is configured to be elastically deformable at the top and the cantilever portion is erected from the tip of the cantilever portion toward the inside in the radial direction of the cylindrical portion, so that the hook portion can be hooked. And nail part.

  The cover body of the syringe cap according to the present invention is configured to be attachable to an elastic stopper made of an elastic member configured to be detachably attached to the nozzle portion of the barrel of the syringe. In the state attached to the elastic plug body, the cylindrical part that can surround the plug part of the elastic plug body that can cover the discharge port provided in the nozzle part of the barrel of the syringe at one end in the axial direction And in the state of being attached to the elastic plug body, the axial direction of the plug portion located on the opposite side of the axial end of the plug portion that can cover the discharge port provided in the nozzle portion of the barrel of the syringe It consists of a bottomed cylindrical member which consists of a hard member which has a bottom part which can cover the other end. The cylindrical portion is provided with a locking portion capable of locking a collar projecting outward from the outer peripheral surface of the plug portion of the elastic plug body when attached to the elastic plug body. A plurality are provided along the direction. Each of the plurality of locking portions is provided so as to extend along the axial direction of the cylindrical portion by forming a notch portion in the cylindrical portion, so that the radial direction of the cylindrical portion From the outer peripheral surface of the plug portion of the elastic plug body, the cantilever beam portion is configured to be elastically deformable, and is erected from the tip of the cantilever beam portion toward the radially inner side of the cylindrical portion. And a claw portion configured to be able to be hooked on a collar portion protruding outward.

  ADVANTAGE OF THE INVENTION According to this invention, the cap for syringes which can be adapted to various usage aspects, suppressing manufacturing cost, the cover body of the cap for syringes which the said cap for syringes comprises, The syringe set provided with the said cap for syringes And the prefilled syringe set provided with the said cap for syringes can be provided.

It is sectional drawing which shows the state which decomposed | disassembled the 1st syringe set which concerns on embodiment of this invention. It is sectional drawing which shows the 1st usage aspect and 2nd usage aspect of the cap for syringes in the 1st prefilled syringe set which concerns on embodiment of this invention comprised using the 1st syringe set shown in FIG. It is a perspective view of the elastic stopper of the cap for syringes concerning an embodiment of the invention. It is the side view and sectional drawing of the elastic stopper body of the cap for syringes concerning embodiment of this invention. It is a perspective view of the cover body of the cap for syringes which concerns on embodiment of this invention. It is the side view, bottom view, and sectional drawing of the cover body of the cap for syringes concerning embodiment of this invention. FIG. 3 is an enlarged view of a region VIIA and a region VIIB shown in FIG. 2. FIG. 8 is a cross-sectional view taken along line VIIIA-VIIIA and line VIIIB-VIIIB shown in FIG. 7. It is a schematic diagram which shows mounting | wearing operation in the 1st usage example of the cap for syringes concerning embodiment of this invention. It is a schematic diagram which shows mounting | wearing operation in the 2nd usage example of the cap for syringes concerning embodiment of this invention. It is a schematic diagram which shows the detachment | desorption operation in the 1st usage example and 2nd usage example of the cap for syringes which concerns on embodiment of this invention. The 2nd embodiment concerning the embodiment of the present invention constituted using the 2nd syringe set concerning the embodiment of the present invention containing the syringe from which specifications differ from the syringe contained in the 1st syringe set shown in Drawing 1 It is sectional drawing which shows the 2nd usage condition of the cap for syringes in the prefilled syringe set.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following embodiments, the same or common parts are denoted by the same reference numerals in the drawings, and description thereof will not be repeated. Further, the number, shape, material, and the like of each part described below are not limited to the specific number, shape, material, and the like unless otherwise specified.

  FIG. 1 is a cross-sectional view showing a state where the first syringe set according to the present embodiment is disassembled. First, with reference to this FIG. 1, the structure of the 1st syringe set 1A which concerns on this Embodiment is demonstrated.

  As shown in FIG. 1, the first syringe set 1 </ b> A includes a syringe including a barrel 10 </ b> A and a plunger 20 </ b> A, and a syringe cap including an elastic stopper 30 and a cover body 40.

  The barrel 10 </ b> A has a container part 11, a nozzle part 12 and a luer lock part 14 provided at the front end of the container part 11, and a flange part 13 provided at the rear end of the container part 11. On the other hand, the plunger 20 </ b> A includes a rod portion 21, a flange portion 22 provided at the rear end of the rod portion 21, and a gasket 23 attached to the front end of the rod portion 21.

  The container part 11 is a site | part for filling a chemical | medical agent, and has a substantially cylindrical shape. The nozzle part 12 is a part for discharging the medicine filled in the barrel 10A, and has a substantially cylindrical shape. The luer lock part 14 is a part for attaching an injection needle to the barrel 10A, and has a substantially cylindrical shape. The luer lock portion 14 is positioned so as to surround the nozzle portion 12.

  A discharge port 12a for discharging a medicine is provided at the tip of the nozzle portion 12, and the discharge port 12a is connected to the needle tube of the injection needle in a state where the injection needle is attached to the tip of the barrel 10A. . A male screw 14a (see FIG. 7 and the like) for screwing a needle base provided at the rear end of the injection needle is provided on the inner peripheral surface of the luer lock portion 14, and the needle base is provided on the male screw 14a. Is inserted into the tip of the barrel 10A. In addition, the flange part 13 is a site | part in which a finger is hung in order to push the plunger 20A into the barrel 10A in the case of injection operation.

  The rod portion 21 is for pushing the medicine into the barrel 10A to discharge the medicine from the discharge port 12a described above, and has a substantially rod-like shape. The gasket 23 is a part that seals the inside of the barrel 10 </ b> A in a liquid-tight manner, and has a bottomed cylindrical shape that covers a coupler provided at the tip of the rod portion 21. The gasket 23 is also a part for pushing the medicine toward the discharge port 12a by sliding in the container part 11 when the rod part 21 is pushed. In addition, the flange part 22 is a site | part in which a finger is hung in order to push the plunger 20A in the barrel 10A in the case of injection operation.

  The elastic plug 30 is made of an elastic member typified by, for example, butyl rubber, halogenated butyl rubber (chlorinated butyl rubber, brominated butyl rubber), thermoplastic elastomer, and the like, and is detachably attached to the nozzle portion 12 of the barrel 10A. Is possible. The elastic plug body 30 closes the discharge port 12a provided at the tip of the nozzle portion 12 when attached to the nozzle portion 12 of the barrel 10A, thereby sealing the inside of the barrel 10A in a liquid-tight manner.

  The cover body 40 is composed of a hard member typified by, for example, polypropylene resin, polyethylene resin, cycloolefin polymer resin, acrylonitrile / butadiene / styrene copolymer synthetic resin, polycarbonate resin, and the like, and can be attached to the elastic plug body 30. It is possible. The cover body 40 has a bottomed cylindrical shape that covers the elastic plug body 30 when attached to the elastic plug body 30.

  The detailed structure of the syringe cap including the elastic stopper 30 and the cover body 40 will be described later.

  2 (A) and 2 (B) show a first usage mode of the syringe cap in the first prefilled syringe set according to the present embodiment configured using the first syringe set shown in FIG. 1, respectively. It is sectional drawing which shows a 2nd usage condition. Next, referring to FIG. 2, a first usage mode and a second usage mode of the syringe cap in the first prefilled syringe set 100A according to the present embodiment will be described.

  As shown in FIG. 2 (A), in the first usage mode, only the elastic stopper 30 of the syringe cap shown in FIG. 1 is attached to the nozzle portion 12 of the barrel 10A alone, so that the first prefilled A syringe set 100A is configured. In this case, the cover body 40 is not shown in FIG. 2A, but is attached to the first prefilled syringe set 100A as an accessory.

  In the first usage mode shown in FIG. 2 (A), the plunger 20A is attached to the barrel 10A, and the elastic plug 30 is attached to the nozzle portion 12 of the barrel 10A, whereby the medicine 101 filled in the barrel 10A. Is sealed in the barrel 10A.

  In the first usage mode, the first prefilled syringe set 100A may be stored in the state shown in FIG. 2A, and then the elastic stopper 30 may be removed and used for injection. If necessary, the cover body 40 is attached to the elastic plug body 30 to store the first prefilled syringe set 100A, and then the syringe cap including the elastic plug body 30 and the cover body 40 is removed for injection. May be provided.

  As shown in FIG. 2B, in the second usage mode, the elastic plug body 30 of the syringe cap shown in FIG. 1 is attached to the nozzle portion 12 of the barrel 10A and covers the elastic plug body 30. Thus, the first prefilled syringe set 100 </ b> A is configured by attaching the remaining cover body 40 of the syringe cap to the elastic plug body 30.

  In the second usage mode shown in FIG. 2B, the plunger 20A is mounted on the barrel 10A and the elastic plug 30 is mounted on the nozzle portion 12 of the barrel 10A, as in the case of the first usage mode described above. Thereby, the medicine 101 filled in the barrel 10A is sealed in the barrel 10A.

  In the second usage mode, the first prefilled syringe set 100A is stored in the state shown in FIG. 2B, and then the syringe cap including the elastic stopper 30 and the cover body 40 is removed for injection. It will be used for

  As described above, by adopting a configuration such as the first syringe set 1A according to the present embodiment and the first prefilled syringe set 100A using the same, only the elastic stopper 30 is attached to the barrel 10A of the syringe. In addition to the usage example that is set to the state, only the elastic stopper 30 is previously attached to the barrel 10A of the syringe, and then the cover 40 is attached to the elastic stopper 30 as necessary. Such as a use example, a use example in which a cap for a syringe including the elastic stopper 30 and the cover body 40 is attached to the barrel 10A of the syringe from the beginning, and the like. .

  3 (A) and 3 (B) are perspective views of an elastic plug body of the syringe cap according to the present embodiment, FIG. 4 (A) is a side view, and FIG. 4 (B) is a cross-sectional view. FIG. 5 (A) and 5 (B) are perspective views of the cover for the syringe cap according to the present embodiment, FIG. 6 (A) is a side view, and FIG. 6 (B) is A bottom view and FIG. 6C are cross-sectional views. Next, with reference to these FIG. 3 thru | or FIG. 6, the structure of the elastic stopper body 30 and the cover body 40 of the cap for syringes concerning this Embodiment is demonstrated in detail.

  As shown in FIG. 3 and FIG. 4, the elastic plug body 30 includes a plug portion 31 having a substantially columnar shape in which a recess 31 a is provided at one end in the axial direction, and outward from the outer peripheral surface of the plug portion 31. And a flange 32 projecting. The collar portion 32 is provided on the outer peripheral surface of the other end located on the opposite side to the one end where the concave portion 31a of the plug portion 31 is provided.

  The one end of the plug portion 31 is provided at the tip of the nozzle portion 12 by receiving the nozzle portion 12 by the concave portion 31a provided at the one end in a state where the elastic plug body 30 is attached to the nozzle portion 12 of the barrel 10A. It is a site | part which obstruct | occludes the discharge outlet 12a. On the other hand, the collar portion 32 provided at the other end of the plug portion 31 is a portion that is locked by a locking portion of the cover body 40 described later in a state where the cover body 40 is attached to the elastic plug body 30. .

  As shown in FIGS. 5 and 6, the cover body 40 includes a cylindrical portion 41 having a substantially cylindrical shape and a bottom portion 42 that closes one end of the cylindrical portion 41. The other end of 41 is opened as an open end 43. The cylindrical portion 41 is provided with a locking portion including a cantilever portion 44 and a claw portion 44a.

  The cantilever portion 44 is provided so as to extend along the axial direction of the tubular portion 41 by forming a substantially U-shaped cutout portion 41 b at a predetermined position of the tubular portion 41. Thus, the cantilever portion 44 is configured to be elastically deformable (flexible deformation) in the radial direction of the tubular portion 41. The base side portion of the cantilever portion 44 is located on the opening end 43 side of the cylindrical portion 41 described above, and the tip side portion of the cantilever portion 44 is the bottom portion 42 of the cylindrical portion 41 described above. Located on the side.

  On the other hand, the claw portion 44a is erected from the tip of the cantilever portion 44 toward the inside in the radial direction of the tubular portion 41, whereby the claw portion 44a is attached to the elastic plug 30 by the cover body 40. In this state, it is configured to be able to be hooked on the collar portion 32 provided on the elastic plug body 30 described above.

  Note that a plurality of locking portions including the cantilever portion 44 and the claw portion 44 a are provided along the circumferential direction of the tubular portion 41. Preferably, four are provided equally along the circumferential direction of the cylindrical portion 41 as shown in the figure, but the number is not particularly limited as long as a plurality of the portions are provided.

  A plurality of groove portions 41 a extending along the circumferential direction are provided at predetermined positions on the outer peripheral surface of the cylindrical portion 41. The plurality of grooves 41a are for preventing slippage between the fingers and the cover body 40 when the cover body 40 is held by fingers. The plurality of grooves 41a are preferably formed so as to surround each of the plurality of locking portions as shown in the figure.

  At a predetermined position on the inner peripheral surface of the tubular portion 41, a ridge 45 extending along the axial direction of the tubular portion 41 is provided. More specifically, the protrusion 45 is provided at a position on the inner peripheral surface of the tubular portion 41 that is located between a pair of locking portions that are adjacent to each other in the circumferential direction of the tubular portion 41. And extends from the vicinity of the end portion on the bottom 42 side of the cylindrical portion 41 to the vicinity of the end portion on the opening end 43 side.

  The protrusion 45 includes a bottom side protrusion 45a located on the bottom 42 side of the tubular portion 41 and an opening end side protrusion 45b located on the opening end 43 side of the tubular portion 41. These bottom portions The side protrusion 45a and the opening end side protrusion 45b are formed so as to be continuous with each other, thereby having a ridge shape.

  The bottom side protrusion 45 a corresponds to a first protrusion that contacts the outer peripheral surface of the flange 32 of the elastic plug 30 in a state where the cover body 40 is attached to the elastic plug 30. Therefore, the protrusion height of the bottom side protrusion 45a is adjusted so that the bottom side protrusion 45a comes into contact with the outer peripheral surface of the flange portion 32 of the elastic plug body 30 in a state where the cover body 40 is attached to the elastic plug body 30. Has been set.

  The opening end side protrusion 45b is disposed in contact with or close to the outer peripheral surface of the luer lock portion 14 of the barrel 10A in a state where the cover body 40 is attached to the elastic plug body 30. Corresponds to the protrusion. Here, in the present embodiment, the opening end side protrusion 45b is disposed close to the outer peripheral surface of the luer lock portion 14 of the barrel 10A in a state where the cover body 40 is attached to the elastic plug body 30. Therefore, the protruding height is adjusted and set.

  A plurality of protrusions 45 are provided along the circumferential direction of the tubular part 41. Preferably, as shown in the drawing, a total of eight are provided on the inner peripheral surface of the cylindrical portion 41 in the portion located between the pair of locking portions described above. The number is not limited.

  7A is an enlarged view of the region VIIA shown in FIG. 2A, and FIG. 7B is an enlarged view of the region VIIB shown in FIG. 2B. 8A and 8B are cross-sectional views taken along lines VIIIA-VIIIA and VIIIB-VIIIB shown in FIG. 7, respectively. Next, with reference to these FIG. 7 and FIG. 8, the structure in the nozzle part 12 vicinity of the barrel 10A in the 1st usage mode and the 2nd usage mode mentioned above is demonstrated.

  As shown in FIG. 7A, the first prefilled syringe set 100A is configured by attaching only the elastic stopper 30 of the syringe cap alone to the nozzle portion 12 of the barrel 10A. The tip of the nozzle portion 12 of the barrel 10A is inserted into the recess 31a of the plug portion 31, so that the tip surface of the nozzle portion 12 comes into contact with the bottom surface of the recess 31a provided in the plug portion 31, and The outer peripheral surface on the tip end side of the nozzle portion 12 contacts the inner wall surface of the recess 31 a provided in the plug portion 31. As a result, the discharge port 12 a provided at the tip of the nozzle portion 12 is blocked by the elastic plug 30. In the first usage mode, one end of the stopper portion 31 on the side where the concave portion 31 a is provided is inserted between the nozzle portion 12 and the luer lock portion 14.

  On the other hand, as shown in FIG. 7B, the elastic plug body 30 of the syringe cap is attached to the nozzle portion 12 of the barrel 10 </ b> A, and the syringe cap remains so as to cover the elastic plug body 30. In the second usage mode in which the first prefilled syringe set 100A is configured by attaching the cover body 40 to the elastic plug body 30, as in the case of the first usage mode described above, the nozzle portion 12 of the barrel 10A By inserting the tip into the recess 31a of the plug portion 31, the discharge port 12a provided at the tip of the nozzle portion 12 is blocked by the elastic plug body 30, and the elastic plug body 30 is further covered by the cover. Covered by body 40.

  Here, the plug portion 31 of the elastic plug body 30 is in a state surrounded by the cylindrical portion 41 of the cover body 40, and the other end located on the opposite side to the one end where the concave portion 31a of the elastic plug body 30 is provided. Is in contact with the bottom 42 of the cover body 40 and is covered by the bottom 42. Furthermore, the collar portion 32 of the elastic plug body 30 is sandwiched between the bottom portion 42 of the cover body 40 and the claw portion 44a in the axial direction thereof. Therefore, the claw part 44 a of the cover body 40 is in a state of being hooked on the collar part 32 of the elastic plug body 30.

  In addition, as shown in FIG. 8A, in the second use state, the bottom side protrusion 45a of the protrusion 45 provided on the cover body 40 is formed on the flange 32 of the elastic plug 30. It abuts so as to bite into the outer peripheral surface. As described above, since the plurality of bottom side protrusions 45a are provided in the circumferential direction of the tubular portion 41, the elastic plug 30 is pressed inward by the plurality of bottom side protrusions 45a. It is in. Therefore, the elastic plug body 30 is in a state of being held fairly firmly by the cover body 40 due to the pressing of the plurality of bottom side protrusions 45a, thereby preventing the cover body 40 from rattling. Has been.

  Further, as shown in FIG. 8B, in the second use state, the opening end side protrusion 45b of the protrusion 45 provided on the cover body 40 is formed on the luer lock part 14 of the barrel 10A. It arrange | positions in the state which approached the outer peripheral surface. As described above, since the plurality of opening end side protrusions 45b are provided in the circumferential direction of the cylindrical portion 41, the luer lock portion 14 is surrounded by the plurality of opening end side protrusions 45b. . Therefore, the cover body 40 is prevented from rattling by being arranged so that the plurality of opening end side protrusions 45b are close to the outer peripheral surface of the luer lock portion 14. In order to further prevent the cover body 40 from rattling, the plurality of opening end side protrusions 45 b may be configured to abut on the outer peripheral surface of the luer lock portion 14.

  FIG. 9 is a schematic diagram illustrating the mounting operation in the first usage example of the syringe cap according to the present embodiment, and FIG. 10 is a schematic diagram illustrating the mounting operation in the second usage example. FIG. 11 is a schematic diagram showing the detachment operation in the first usage example and the second usage example of the syringe cap according to the present embodiment. Next, referring to FIGS. 9 to 11, the mounting operation of the cover body 40 of the syringe cap according to the present embodiment in the first usage example and the second usage example, and the first usage example and the second usage example. Desorption operation in a usage example will be described.

  In the mounting operation in the first use example shown in FIG. 9, the first prefilled syringe set 100A is configured by attaching only the elastic stopper 30 of the syringe cap alone to the nozzle portion 12 of the barrel 10A. In one usage mode, this is an operation when the remaining cover body 40 of the syringe cap is further attached.

  As shown in FIG. 9, in the mounting operation in the first usage example, the cylindrical portion 41 of the cover body 40 is held by fingers (not shown), and in this state, the open end 43 of the cover body 40 is placed. Is adjusted so that it faces the elastic plug body 30 attached to the nozzle portion 12 of the barrel 10 </ b> A, and the cover body 40 is attached so as to cover the elastic plug body 30.

  At this time, the collar portion 32 of the elastic plug body 30 is accommodated in the cover body 40 by passing through the opening end 43 of the cover body 40, and then the upper end of the collar portion 32 is moved to the cover body. The claw portion 44a of the 40 locking portions comes into contact. Here, as described above, since the claw portion 44a is located at the tip of the cantilever portion 44 provided in the tubular portion 41, the cantilever portion 44 is brought into contact with the tubular portion 41 by the contact. Accordingly, the claw portion 44a moves backward toward the outer side in the radial direction. Therefore, the collar part 32 moves over the claw part 44a and moves to the bottom part 42 side of the cover body 40.

  Thereafter, when the collar portion 32 completely gets over the claw portion 44a, the bending deformation of the cantilever beam portion 44 due to the claw portion 44a coming into contact with the collar portion 32 is released, whereby the cantilever beam portion 44 is restored to the original shape. It will return to its shape. Thereby, the collar part 32 will be in the state pinched | interposed by the bottom part 42 and the nail | claw part 44a of the cover body 40 in the axial direction, and the attachment with respect to the elastic plug body 30 of the cover body 40 is completed.

  Thus, by using the syringe cap according to the present embodiment, it is possible to attach the cover body 40 later in a state where only the elastic stopper 30 is previously attached to the barrel 10A of the syringe. The attachment can be carried out smoothly without difficulty, and the cover body 40 can be prevented from falling off the elastic plug 30 after the attachment. As shown in the figure, the surface located on the opening end 43 side of the claw portion 44a is configured as an inclined surface, so that the cover body 40 can be attached to the elastic plug 30 more smoothly and smoothly. .

  The mounting operation in the second usage example shown in FIG. 10 is an operation when the cover body 40 is attached to the elastic stopper 30 in advance and the syringe cap is attached to the nozzle portion 12 of the barrel 10A in this state. In addition, attachment of the cover body 40 with respect to the elastic plug body 30 is performed according to the case of the 1st usage example mentioned above.

  As shown in FIG. 10, in the mounting operation in the second usage example, the cylindrical portion 41 of the cover body 40 is held by fingers (not shown), and the cover body 40 is attached in this state. The direction of the syringe cap is adjusted so that the recess 31a provided in the plug portion 31 of the elastic plug body 30 faces the nozzle portion 12 of the barrel 10A, and the syringe cap is attached so as to cover the nozzle portion 12 It is done.

  At this time, the elastic plug 30 is not held by fingers. Therefore, since the cover body 40 is harder than the elastic plug body 30, the operation can be performed more smoothly than when only the elastic plug body 30 is held with fingers and attached to the nozzle portion 12.

  The detaching operation in the first usage example and the second usage example shown in FIG. 11 is attached to the nozzle portion 12 of the barrel 10A in the state after the mounting operation in the first usage example and the second usage example described above is performed. This is an operation for removing the syringe cap from the nozzle portion 12.

  As shown in FIG. 11, in the detachment operation in the first usage example and the second usage example, the cylindrical portion 41 of the cover body 40 is held by fingers (not shown), and in this state the cover is covered. The syringe cap is removed from the nozzle portion 12 by pulling the body 40 away from the barrel 10 </ b> A. At this time, as described above, the claw portion 44a of the cover body 40 is in a state of being hooked on the collar portion 32 of the elastic plug body 30, so that the elastic plug is brought into contact with the claw portion 44a. The body 30 is also pulled away in the direction away from the barrel 10 </ b> A, and the cover body 40 is not detached from the elastic plug body 30.

  At this time, the elastic plug 30 is not held by fingers. Therefore, it is not necessary to directly hold the elastic plug 30 with fingers, so that it is possible to prevent the drug 101 from adhering to the fingers when the syringe cap is removed. Furthermore, since the cover body 40 is harder than the elastic plug body 30, the operation can be performed more smoothly than when only the elastic plug body 30 is held by fingers and removed from the nozzle portion 12. Further, when the portion of the cylindrical portion 41 of the cover body 40 where the locking portion is provided is gripped by a finger, the cantilever portion 44 is elastically deformed (flexed) toward the inside. The claw part 44a moves toward the inner side in the radial direction of the cylindrical part 41, and the claw part 44a comes into contact with the outer peripheral surface of the plug part 31 of the elastic plug body 30 to bite more stably. The syringe cap can also be removed.

  FIG. 12 shows a second embodiment according to the present embodiment configured using the second syringe set according to the present embodiment including a syringe having a different specification from the syringe included in the first syringe set shown in FIG. 1. It is sectional drawing which shows the 2nd usage condition of the cap for syringes in the prefilled syringe set. Next, with reference to this FIG. 12, the 2nd syringe set 1B which concerns on this Embodiment, and the 2nd prefilled syringe set 100B which concerns on this Embodiment comprised using this are demonstrated.

  As shown in FIG. 12, the second syringe set 1B includes a syringe having different specifications from the syringe included in the first syringe set 1A described above, and a syringe cap included in the first syringe set 1A described above. And a syringe cap of the same specification. The syringe included in the second syringe set 1B includes a barrel 10B that does not include the luer lock portion 14 included in the syringe barrel 10A included in the first syringe set 1A described above, and a plunger 20B. Yes.

  Here, the shape and size of the nozzle portion 12 of the barrel 10B are configured to match those of the barrel 10A of the syringe included in the first syringe set 1A described above, and thereby the first syringe described above. A syringe cap having the same specifications as the syringe cap included in the set 1A can be used as a syringe cap attached to the nozzle portion 12 of the barrel 10B.

  The second prefilled syringe set 100B configured using the second syringe set 1B is a syringe cap, similar to the first prefilled syringe set 100A configured using the first syringe set 1A described above. As shown in FIG. 12, if only the elastic plug body 30 is attached to the nozzle portion 12 of the barrel 10B alone, the second prefilled syringe set 100B can be used as the first usage mode. The elastic plug body 30 of the syringe cap is attached to the nozzle portion 12 of the barrel 10B, and the remaining cover body 40 of the syringe cap is attached to the elastic plug body 30 so as to cover the elastic plug body 30. As a second usage mode in which the second prefilled syringe set 100B is configured It is also possible to.

  In addition, the various use examples in the said 2nd syringe set 1B and the 2nd prefilled syringe set 100B comprised using this, its mounting operation, and removal | desorption operation are the 1st syringe set 1A mentioned above and this. Since it is basically the same as those in the first prefilled syringe set 100A configured by using, the description thereof will not be repeated here.

  As described above, by adopting the configuration as in the present embodiment, it can be adapted to all the various usage modes described above. Therefore, when seen from the viewpoint of use, it can be made much more convenient than conventional ones.

  On the other hand, by adopting the configuration as in the present embodiment, it is possible to design the elastic plug body and the cover body in advance as common parts, so that a set of common parts can be set for each product type. By selecting the presence or absence of attachment or the presence or absence of accessories as accessories, it is possible to easily construct a product lineup suitable for various usage modes. Therefore, from the viewpoint of manufacturing, not only the flexibility of parts is improved, but also the manufacturing cost can be greatly reduced.

  Therefore, the syringe cap according to the present embodiment described above, the cover of the syringe cap provided in the syringe cap, the syringe set including the syringe cap, and the prefilled syringe including the syringe cap By setting it as a set, it becomes possible to adapt to various usage modes while suppressing manufacturing costs.

  The above-described embodiment disclosed herein is illustrative in all respects and is not restrictive. The technical scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1A, 1B Syringe Set, 10A, 10B Barrel, 11 Container, 12 Nozzle, 12a Discharge Port, 13 Flange, 14 Luer Lock, 14a Male Thread, 20A, 20B Plunger, 21 Rod, 22 Flange, 23 Gasket, 30 elastic plug, 31 plug, 31a recess, 32 collar, 40 cover, 41 cylindrical, 41a groove, 41b notch, 42 bottom, 43 open end, 44 cantilever, 44a claw Part, 45 protrusion part, 45a bottom part side protrusion part, 45b opening end side protrusion part, 100A, 100B prefilled syringe set, 101 medicine.

Claims (9)

A syringe set including a syringe including a barrel and a plunger, and a syringe cap capable of closing a discharge port provided in a nozzle portion of the barrel,
The syringe cap has an elastic plug made of an elastic member configured to be detachably attached to the nozzle portion, and a cover member made of a hard member configured to be attached to the elastic plug. Including
The elastic plug body, when attached to the nozzle portion, has a plug portion that covers the discharge port at one end in the axial direction, and a flange portion that protrudes outward from the outer peripheral surface of the plug portion. And
The cover body is positioned on a side opposite to the one end of the plug portion in a state of being attached to the elastic plug body and a cylindrical portion surrounding the plug portion in a state of being attached to the elastic plug body. Consisting of a bottomed cylindrical member having a bottom covering the other end,
In the state where the cover body is attached to the elastic plug body, the cylindrical portion is provided with a plurality of locking portions for locking the collar portion along the circumferential direction,
Each of the plurality of locking portions is provided so as to extend along the axial direction of the cylindrical portion by forming a notch portion in the cylindrical portion, so that the radial direction of the cylindrical portion The cantilever portion is configured to be elastically deformable at the end of the cantilever portion, and is erected from the front end of the cantilever portion toward the inside in the radial direction of the cylindrical portion, so that the hook portion can be latched. Syringe set including a claw portion.   In the state where the cover body is attached to the elastic plug body, a plurality of first protrusions that contact the outer peripheral surface of the flange portion are provided in the circumferential direction on the inner peripheral surface of the cylindrical portion. Item 2. A syringe set according to item 1. The barrel has a cylindrical luer lock portion surrounding the nozzle portion;
In the state where the elastic plug is attached to the nozzle part, the one end of the plug part is inserted between the nozzle part and the luer lock part,
In a state where the elastic plug body is attached to the nozzle portion and the cover body is attached to the elastic plug body, the elastic plug body is disposed in contact with or close to the outer peripheral surface of the luer lock portion. The syringe set according to claim 2, wherein a plurality of two projecting portions are provided in the circumferential direction on the inner peripheral surface of the cylindrical portion. A plurality of protrusions extending along the axial direction of the cylindrical portion are provided in the circumferential direction on the inner peripheral surface of the cylindrical portion,
The syringe set according to claim 3, wherein each of the plurality of protrusions constitutes the first protrusion and the second protrusion.   The syringe set according to any one of claims 1 to 4, wherein four of the plurality of locking portions are equally provided along a circumferential direction of the cylindrical portion. The syringe set according to any one of claims 1 to 5,
With drugs,
The prefilled syringe set in which the medicine is filled in a sealed state in the barrel by attaching the plunger to the barrel and attaching the elastic plug to the nozzle portion.   The prefilled syringe set according to claim 6, wherein the cover body is further attached to the elastic plug body. A syringe cap capable of closing a discharge port provided in a nozzle portion of a syringe barrel,
An elastic plug body made of an elastic member configured to be detachably attached to a nozzle portion of a barrel of a syringe, and a cover body made of a hard member configured to be attached to the elastic plug body ,
The elastic plug body, when attached to the nozzle portion of the barrel of the syringe, a plug portion capable of covering a discharge port provided in the nozzle portion of the syringe at one axial end, and an outer peripheral surface of the plug portion And a flange projecting outward from the
The cover body is positioned on a side opposite to the one end of the plug portion in a state of being attached to the elastic plug body and a cylindrical portion surrounding the plug portion in a state of being attached to the elastic plug body. Consisting of a bottomed cylindrical member having a bottom covering the other end,
In the state where the cover body is attached to the elastic plug body, the cylindrical portion is provided with a plurality of locking portions for locking the collar portion along the circumferential direction,
Each of the plurality of locking portions is provided so as to extend along the axial direction of the cylindrical portion by forming a notch portion in the cylindrical portion, so that the radial direction of the cylindrical portion The cantilever portion is configured to be elastically deformable at the end of the cantilever portion, and is erected from the front end of the cantilever portion toward the inside in the radial direction of the cylindrical portion, so that the hook portion can be latched. A syringe cap including a claw portion. A cover for a syringe cap configured to be attachable to an elastic stopper made of an elastic member configured to be detachably attached to a nozzle portion of a barrel of a syringe,
A cylindrical part that can surround the stopper part of the elastic stopper that can cover the discharge port provided in the nozzle part of the barrel of the syringe at one end in the axial direction in a state of being attached to the elastic stopper, The other end in the axial direction of the plug portion located opposite to the one end in the axial direction of the plug portion capable of covering the discharge port provided in the nozzle portion of the barrel of the syringe in a state attached to the elastic plug body A bottomed cylindrical member made of a hard member having a bottom portion capable of covering
The cylindrical portion has a locking portion capable of locking a collar projecting outward from the outer peripheral surface of the plug portion of the elastic plug body when attached to the elastic plug body. A plurality are provided along the direction,
Each of the plurality of locking portions is provided so as to extend along the axial direction of the cylindrical portion by forming a notch portion in the cylindrical portion, so that the radial direction of the cylindrical portion From the outer peripheral surface of the plug portion of the elastic plug body, the cantilever beam portion configured to be elastically deformable, and standing from the tip of the cantilever beam portion toward the radially inner side of the cylindrical portion A cover body for a syringe cap, including a claw portion configured to be hookable on a collar portion protruding outward.

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