TW202124229A - Drug solution supply tool, drug solution supply device and method for producing drug solution supply tool - Google Patents

Abstract

The purpose of the present invention is to provide a drug solution supply tool and a drug solution supply device that make it possible to suppress development of burrs on a stopper. The present application discloses a drug solution supply tool that can be attached to a container storing a drug solution. The drug supply tool comprises: a tubular base body that is configured to be attachable to an opening of the container and that has a tip portion in which an opening region through which the drug solution flows out is formed; a stopper that closes the opening region when displaced in the axial direction of the base body; and a pressing part that presses the stopper so as to close the opening region. The base body includes a retaining part having an apex portion that bulges out toward the axis of the base body to prevent the stopper from separating from the base body through the opening region. The stopper includes an outer-edge section that closes the opening region by abutting against the retaining part, and the stopper is formed of a resin that is harder than the base body.

Description

Medicinal liquid supply member, medicinal liquid supply device, and manufacturing method of medicinal liquid supply member

The present invention relates to a medicinal solution supply member, a medicinal solution supply device and a method of manufacturing a medicinal solution supply member used for the supply of a medicinal solution.

Various medical liquid supply devices that apply medical liquids to the human body by contact have been developed (refer to Patent Document 1). The medical solution supply tool of Patent Document 1 is configured to be attachable to the opening of a container containing the medical solution. In detail, it includes: a cylindrical base with a circular opening area for the liquid medicine to flow out at the front end; a substantially disc-shaped plug that opens or closes the opening area by displacement in the base along the axis of the base ; The pressing portion is constructed in a manner that applies force to the plug portion to close the opening area of the plug portion.

The outer shape of the base body is designed to fit the shape of the opening of the container so that the medicinal solution supply tool is attached to the container. The base has a braking part bulging toward the axis of the base inside the base. The stopper part is provided at the front end of the base body in order to prevent the plug part from escaping from the base body through the opening area. Specifically, the stopper is configured to be in contact with the outer edge of the plug in the base.

The opening area is closed by the outer edge of the bolt contacting the braking part. The pressing part urges the plug part to maintain this contact state, and prevents the liquid medicine from flowing out when the liquid medicine supply tool is not used.

When using the medicinal solution supply tool, the user holds the container with the opening area of the base facing downward. If the user presses the exposed part of the plug against the human body, an external force opposite to the applied force acts on the plug. If the external force is greater than the applied force of the pressing portion, the plug portion is displaced in the axial direction of the base body and leaves the braking portion. The liquid medicine in the container flows down the gap between the plug part and the brake part and flows out from the opening area. The medicinal solution flowing out from the opening area flows into the gap between the human body and the exposed part of the plug, and is supplied to the human body. [Prior Art Literature] [Patent Literature]

[Patent Document 1] International Publication No. WO2017/099235

[The problem to be solved by the invention] Regarding the assembly of the medicinal solution supply tool, the outer edge portion of the plug portion is formed so as to be in contact with the stopper portion bulging in the axial direction of the base body when the plug portion is housed in the base body. Therefore, when the plug portion is accommodated in the base body through the opening area of the base body, the front end portion of the base body is stretched by the plug portion. If the plug is pressed in the axial direction of the base under the action of the reversing force caused by the deformation of the front end portion of the base, the outer surface of the plug is strongly rubbed by the base. If the friction force generated between the plug portion and the base body becomes too large, the plug portion will be ground by the base body. As a result, burrs are generated from the plug part.

If the burrs of the plug portion are sandwiched between the stopper portion and the outer edge portion of the plug portion, a gap is generated between these portions, and even if the external force does not exist, the liquid medicine may flow out. That is, the burrs of the plug may cause accidental outflow of the liquid medicine.

The object of the present invention is to provide a medicinal solution supply tool and a medicinal solution supply tool capable of suppressing the generation of plug burrs. [Means to solve the problem]

One aspect of the medicinal solution supply tool of the present invention is configured to be attachable to a container accommodating the medicinal solution. The medicinal solution supply member includes: a cylindrical base body configured to be able to be attached to the opening of the container, and an opening area for the medicinal solution to flow out is formed at the front end; Axial displacement opens and closes the opening area; and a pressing portion urges the plug portion to close the opening area. The base body includes a stopper portion to prevent the plug portion from escaping from the base body through the opening area, and the stopper portion has a top portion that bulges toward the shaft of the base body. The plug portion includes an outer edge portion that closes the opening area by abutting on the stopper portion, and is formed of a resin that is harder than the base.

According to the above structure, the plug portion includes the outer edge portion that closes the opening area by abutting against the stopper portion. Therefore, in order to allow the plug portion to pass through the opening area and arrange it in the base, the front end of the base must be expanded. Deform the substrate. In this case, the restoring force accompanying the deformation of the base makes the outer edge portion of the plug strongly contact the braking portion of the base. Even if it is in strong contact with the braking portion of the base body, since the plug portion is formed of a harder resin than the base body, the plug portion is not easily ground by the base body. As a result, the burr generated by the plug is suppressed.

Regarding the structure, the outer edge portion may include an inclined surface that is inclined so that the plug portion gradually narrows toward the base end side.

According to this structure, the inclined surface of the outer edge of the plug portion is inclined such that the plug portion gradually narrows toward the base end side. Therefore, when the plug portion is pressed into the base body, the front end portion of the base body is gradually expanded by the inclined surface. The sudden deformation of the front end of the base is suppressed, so it is easy to insert the plug into the base.

Regarding the structure, the top portion may include a curved shape in a longitudinal section.

According to the above configuration, the top portion of the stopper portion strongly contacts the outer edge portion of the plug portion when the plug portion is inserted into the base body through the opening area. Since the top part has an outer shape that is curved in the longitudinal section, it is not easy to grind even if it is in strong contact with the outer edge of the plug part. Therefore, it is possible to suppress the occurrence of burrs on the substrate.

Regarding the structure, the pressing portion may be integrally formed with the plug portion.

According to the above structure, since the pressing portion is formed integrally with the plug portion, the pressing portion may be formed of the same resin as the plug portion. Since the plug portion is formed of a hard resin, if the pressing portion is formed using this resin, the pressing portion has a large coefficient of elasticity, and a large force can be applied to the plug portion. In addition, the pressing part can be housed in the base body together with the plug part.

Another aspect of the medicinal solution supply device of the present invention includes the medicinal solution supply tool, and the container in which the medicinal solution is housed and the opening is formed. The medical solution supply tool is attached to the opening of the container.

The manufacturing method of another aspect of the present invention can be used to manufacture a medical solution supply tool that can be attached to a container containing a medical solution. The manufacturing method includes: molding a cylindrical substrate that is configured to be mountable to the opening of the container and has an opening area for the drug solution to flow out at the front end; The plug is formed by displacing in the axial direction of the base to open and close the opening area; and the plug is inserted into the base through the opening area. [Effects of the invention]

The medicinal solution supply tool, the medicinal solution supply tool, and the method for manufacturing the medicinal solution supply tool of the present invention can suppress the generation of burrs from the plug portion when the plug portion is inserted into the base.

The medicinal solution supply tool is a product in which a medicinal solution supply tool is attached to the opening of the container (for example, the injection port of the medicinal solution into the container). Fig. 1 shows a schematic cross-sectional view of the medicinal solution supply device. The medicinal solution supply includes the plug part 100 and the pressing part 300 shown in FIGS. 2 to 4, and the cylindrical base 200 shown in FIGS. 5 and 6. The plug part 100 and the pressing part 300 are members housed in the base 200. FIG. 2 is a schematic front view of the plug part 100 and the pressing part 300. 3 and 4 are schematic perspective views of the plug part 100 and the pressing part 300. Fig. 5 is a schematic longitudinal cross-sectional view of the base 200 attached to the mouth tube 500 in which the opening of the container is formed. FIG. 6 is a schematic perspective view of the base 200.

The base 200 is a member that is integrally molded into a cylindrical shape using resin (for example, High Density Polyethylene (HDPE)). Specifically, the base 200 includes an insertion tube portion 210 configured to be inserted into the mouth tube 500 and an exposed tube portion 220 exposed from the mouth tube 500.

The insertion tube portion 210 includes a tapered tube portion 211 that is tapered toward the insertion container (base end side), and an intermediate tube portion 212 located between the tapered tube portion 211 and the exposed tube portion 220. The inner peripheral surface of the tapered cylindrical portion 211 is substantially parallel to the axis of the base 200, and in contrast to this, the outer peripheral surface of the tapered cylindrical portion 211 is inclined with respect to the axis of the base 200. The inclination of the outer peripheral surface of the tapered cylindrical portion 211 is provided to facilitate the insertion of the base body 200 into the mouth cylinder 500.

The outer peripheral surface of the intermediate tube portion 212 is substantially parallel to the axis of the base body 200, and the entirety is in contact with the inner peripheral surface of the mouth tube 500. The inner circumferential surface of the intermediate cylindrical portion 212 is substantially parallel to the axis of the base 200 except for the vicinity of the upper end portion, and is formed on the same plane as the inner circumferential surface of the tapered cylindrical portion 211. The front end portion of the inner peripheral surface of the intermediate cylindrical portion 212 is inclined with respect to the axis of the base body 200 so as to form a space that becomes narrower toward the base end side. The inclination of the front end portion of the inner peripheral surface of the intermediate cylindrical portion 212 is provided to facilitate the insertion of the pressing portion 300 into the base 200.

The insertion tube portion 210 further includes a bottom ring portion 213 provided so as to protrude from the base end of the inner peripheral surface of the tapered tube portion 211 toward the axis of the base body 200, and an opening direction (tip end) from the bottom ring portion 213 to the mouth tube 500 Side) a plurality of protruding resistance protrusions 214. The bottom ring portion 213 is provided to support the plug portion 100 and the pressing portion 300 in the base 200. The plurality of resistance protrusions 214 are formed at substantially equal intervals around the axis of the base 200 (that is, in the circumferential direction). The resistance protrusions 214 are in the shape of a triangular column, and are formed such that one of the corners of the triangular column faces the opening direction of the mouth tube 500. The resistance protrusion 214 is provided to apply resistance to the rotation of the plug 100 when the plug 100 rotates around the axis of the base 200.

The exposed cylindrical portion 220 is formed on the tip side with respect to the inserted cylindrical portion 210. The exposed cylindrical portion 220 has an outer diameter larger than that of the inserted cylindrical portion 210, and has an annular shoulder surface 221 that expands outward in the radial direction from the front end of the inserted cylindrical portion 210. The shoulder surface 221 abuts against the front end edge surface of the mouth tube 500 to prevent the base 200 from being pressed into the interior of the container from this position.

The exposed cylinder 220 has an opening area 222 formed at the front end. The opening area 222 is formed to allow the liquid medicine to flow out. The opening area 222 is wider than the opening area (that is, the area surrounded by the inner periphery of the bottom ring portion 213) inserted into the base end of the cylindrical portion 210.

In order to prevent the plug 100 from coming out of the base 200 through the opening area 222, a braking portion 224 bulging toward the shaft of the base 200 is formed inside the exposed cylindrical portion 220. The braking portion 224 has a top portion that is curved in a longitudinal section. The ridge line connecting the top in the circumferential direction is the opening edge 223 surrounding the opening area 222. The braking portion 224 forms a space that widens from the opening area 222 toward the base end side.

The inner peripheral surface of the exposed cylindrical portion 220 includes a tapered surface 225 that forms a space that expands in a direction opposite to the space surrounded by the braking portion 224. The braking portion 224 and the tapered surface 225 form a concave space in which the inner peripheral surface of the exposed cylindrical portion 220 is recessed toward the outside in the radial direction. The recessed space is formed in a manner that accommodates the plug 100 and allows the plug 100 to be displaced in the axial direction of the base 200.

A ring-shaped restriction surface 226 facing the opening area 222 is formed in the exposed cylindrical portion 220. The restriction surface 226 is provided to restrict the displacement of the plug 100 to the proximal side.

The plug part 100 is a member having a disc shape as a whole formed by using a resin harder than the base 200. Regarding this embodiment, the hardness of the resin is evaluated using the bending modulus measured by the test method defined by ISO178 or JISK7171. When the base 200 is formed of high-density polyethylene, the plug 100 may be formed of polyoxymethylene (POM). In this case, the flexural modulus of the plug 100 is 2,500 MPa, on the other hand, the flexural modulus of the base 200 is 1,000 MPa.

The plug 100 includes a first tapered portion 101 and a second tapered portion 102. The first tapered portion 101 has an exposed portion 110 exposed from the opening area 222 on the front end side, and the second tapered portion 102 includes It faces the base end surface 120 on the side opposite to the exposed portion 110. The first tapered portion 101 includes a truncated cone-shaped portion that tapers toward the exposed portion 110 on the tip side. The second tapered portion 102 is a substantially truncated cone-shaped portion that tapers toward the base end surface 120. Among these truncated cone-shaped parts, the plug 100 has a longitudinal section of a substantially hexagonal shape.

The exposed portion 110 of the first tapered portion 101 includes a substantially circular coating surface 111 approximately equal to the diameter of the opening area 222 and three massage peaks 112 raised from the coating surface 111. The coating surface 111 is used to apply the liquid medicine flowing out from the opening area 222 to the human body in a contact manner. The massage peak 112 is used to massage the human body part contacting the coating surface 111.

The coating surface 111 is curved so as to smoothly bulge from the opening area 222. Three liquid storage recesses 113 (circular recesses) are formed on the coating surface 111 at intervals in the circumferential direction. The liquid storage recesses 113 are formed at substantially equal intervals. The liquid storage recess 113 is used to store the liquid medicine flowing to the coating surface 111 through the opening area 222.

The three massage peaks 112 are approximately hemispherical portions formed at intervals in the circumferential direction. In detail, the massage peaks 112 are formed in such a manner that the bulging directions of the three massage peaks 112 are inclined outward in the radial direction of the axis of the massage peaks 112.

The three massage peaks 112 are formed in the area between the three liquid storage recesses 113. Therefore, the massage peaks 112 and the liquid storage recesses 113 are alternately arranged in the circumferential direction.

The base end surface 120 of the second tapered portion 102 has an annular and flat band region formed along the outer peripheral edge of the base end surface 120. The diameter of the base end surface 120 is less than the diameter of the opening region 222 and is approximately equal to the outer diameter of the restriction surface 226. The flat band region of the base end surface 120 faces the restriction surface 226.

The ring-shaped outer edge portion 130 of the plug portion 100 includes the outer peripheral surfaces of the first tapered portion 101 and the second tapered portion 102. The ridge line 133 forming the boundary of the outer peripheral surfaces of the first tapered portion 101 and the second tapered portion 102 surrounds the part of the plug portion 100 having the widest cross section. As the plug 100 has a cross section that increases from the coating surface 111 and the base end surface 120 toward the ridge line 133, the outer edge portion 130 bulges outward in the radial direction with respect to the outer periphery of the coating surface 111 and the base end surface 120 out. The diameter of the circular area surrounded by the ridge line 133 is larger than the diameter of the opening area 222. The ratio of these diameters (the diameter of the circular area surrounded by the ridgeline 133/the diameter of the opening area 222) is set to a range of 1.0 to 1.1, preferably a range of 1.02 to 1.06, and more preferably a range of 1.03 to 1.05 scope. The diameter ratio is set in a manner to avoid plastic deformation of the base 200 when the plug 100 is inserted into the base 200.

The bulging shape of the outer edge portion 130 is substantially complementary to the concave space formed by the braking portion 224 and the tapered surface 225 of the base 200. The outer peripheral surface of the first tapered portion 101 faces the braking portion 224, and is referred to as a "contact surface 132" in the following description. The outer peripheral surface of the second tapered portion 102 faces the tapered surface 225, and is referred to as the "inclined surface 131" in the following description. The shape of the contact surface 132 is designed in such a way that the contact surface 132 makes surface contact with the braking portion 224. The inclination angle of the inclined surface 131 is set in a manner to avoid sudden deformation of the base 200 when the plug 100 is inserted into the base 200.

The width of the outer edge portion 130 (the size in the axial direction of the base 200) is smaller than the thickness of the concave space formed by the braking portion 224 and the tapered surface 225 (that is, the size of the concave space in the axial direction of the base 200). Therefore, the plug 100 can move in the axial direction of the base 200 in the concave space.

The pressing part 300 is configured to elastically support the plug part 100. The pressing portion 300 is formed integrally with the plug portion 100 using the same resin as the plug portion 100 and is formed separately from the base 200. The resin of the plug portion 100 is relatively hard as described above, and therefore the pressing portion 300 has a large coefficient of elasticity.

The pressing portion 300 includes a support ring portion 310 placed on the bottom ring portion 213 and three elastic leg portions 320 extending from the support ring portion 310 to the base end surface 120 of the plug 100. The inner diameter and outer diameter of the support ring portion 310 are substantially the same as the inner diameter and outer diameter of the bottom ring portion 213. The three elastic legs 320 respectively include a spiral leg portion 321 that is curved in an arc so as to overlap the support ring portion 310 in a plan view and extends to the plug portion 100, and a shaft connecting the base body 200 from the tip of the spiral leg portion 321. The front end leg 322 extends substantially in parallel. The base ends of the three spiral leg portions 321 are connected to the support ring portion 310 at substantially equal intervals in the circumferential direction. The three front end legs 322 are connected to the base end surface 120 at substantially equal intervals in the circumferential direction. The connecting portion of the front end leg portion 322 and the base end surface 120 is set at a position more inside than the outer periphery of the base end surface 120 in a manner to avoid interference between the front end leg portion 322 and the portion of the base body 200 forming the annular restriction surface 226 . The height of the elastic foot part 320 is set in such a way that the elastic foot part 320 is compressed in the axial direction of the base body 200 when the plug part 100 and the pressing part 300 are housed in the base body 200.

The medicinal solution supply member further includes a resistance part 400 that cooperates with the resistance protrusion 214 of the base 200 to apply resistance to the rotation about the axis of the plug 100. The resistance part 400 and the support ring part 310 are integrally formed. The resistance portion 400 includes three protrusions 410 protruding from the base end surface of the support ring portion 310 facing the bottom ring portion 213. The protrusions 410 are formed at substantially equal intervals. Each of the protrusions 410 has a substantially triangular pyramid shape. The apex of the triangular pyramid of the protrusion 410 is in contact with the bottom ring portion 213. The protrusion 410 is arranged between adjacent resistance protrusions 214.

The medical solution supply tool utilizes the elastic deformation of the pressing portion 300 to open or close the opening area 222. The elastic leg 320 of the pressing portion 300 housed in the base 200 is in a compressed state, and therefore the pressing portion 300 applies a force to the plug 100 in a direction in which the plug 100 is pushed out from the opening area 222. As a result, the contact surface 132 of the outer edge portion 130 of the plug 100 is in surface contact with the braking portion 224 of the base 200. The surface contact area of the contact surface 132 and the braking portion 224 functions as a sealing area that prevents the chemical liquid from flowing out of the opening area 222.

When the chemical liquid supply tool is used for application of the chemical liquid, the container in which the chemical liquid supply tool is installed is held with the application surface 111 facing downward. If the coating surface 111 is pressed against the human body and the external force pressing the coating surface 111 is greater than the elastic force of the pressing portion 300, the plug portion 100 is displaced to the inside (ie, above) of the base 200 in the axial direction of the base 200. As a result, the contact surface 132 is separated from the braking portion 224, and the opening area 222 is connected to the internal space of the container. The liquid medicine in the container flows out from the opening area 222 under the action of gravity.

If the plug 100 is further pressed into the base 200, the flat belt area of the base end surface 120 of the plug 100 abuts the restriction surface 226, and the displacement of the plug 100 is restricted by the restriction surface 226. Since the band region of the base end surface 120 and the restriction surface 226 are flat, the flat band region of the base end surface 120 and the restriction surface 226 are in surface contact. The surface contact area of the base end surface 120 and the restriction surface 226 functions as a sealing area that prevents the liquid medicine from flowing out of the opening area 222.

The outflow amount of the liquid medicine from the opening region 222 reaches a peak when the interval between the contact surface 132 and the braking portion 224 and the interval between the base end surface 120 and the restriction surface 226 become substantially equal. From this state, not only the outflow rate decreases when the external force pressing the coating surface 111 becomes weak, but also the outflow rate decreases when the external force increases. Therefore, the excessive outflow of the liquid medicine when the pressing force to the application surface 111 becomes stronger is suppressed.

The chemical liquid flowing out from the opening area 222 is supplied to the application surface 111. A part of the liquid medicine between the application surface 111 and the human body part is stored in the liquid storage recess 113. The holdable amount of the medicinal solution between the application surface 111 and the human body part is increased by an amount corresponding to the volume of the liquid reservoir recess 113, and therefore the downward flow of the medicinal solution from the application surface 111 is suppressed. During the process of rubbing the coating surface 111 on the human body part, the external force pressing the coating surface 111 is weakened or strengthened. Even if the plug 100 closes the opening area 222, the liquid medicine is stored in the liquid storage recess 113, so that it can continue to be applied to the human body part. Supply liquid medicine.

While rubbing the coated surface 111 on the human body part, the massage peak 112 massages the human body part. If the force of the massage peak 112 pressing the human body part is weakened, the plug 100 contacts the braking part 224 and stops the flow of the medical liquid from the opening area 222. On the contrary, even if the pressing force on the human body part is increased, the plug 100 contacts the restricting surface 226, and the outflow of the liquid medicine is stopped. Even in these situations, the liquid medicine can be continuously supplied through the liquid storage recess 113.

During the massaging of the human body part, there is also a case where the force that intends to rotate the plug 100 around the axis of the base 200 acts. If the plug portion 100 rotates due to this force, the protrusion 410 of the resistance portion 400 contacts the support ring portion 310 and moves around the axis of the base 200. Since the contact portion of the protrusion 410 is the apex of the triangular pyramid, the contact area between the protrusion 410 and the support ring 310 is small. Therefore, while the protrusion 410 moves in the movement section between the adjacent resistance protrusions 214, the medicinal solution supply tool hardly applies resistance to the rotation of the plug 100. On the other hand, if the protrusion 410 contacts the adjacent resistance protrusion 214, the medicinal solution supply tool generates strong resistance to the rotation of the plug 100, and the rotation of the plug 100 is stopped.

Regarding the assembly of the medicinal solution supply tool, first, the plug 100 is placed on the opening area 222. The base end surface 120 of the plug 100 has a size smaller than the opening area 222, so a part of the second tapered portion 102 enters the base 200. After that, if the second tapered portion 102 is pressed into the base 200 in the axial direction, the second tapered portion 102 gradually expands the front end of the base 200. The second tapered portion 102 does not have a shape that rapidly expands the opening area 222, and therefore it is easy to insert the plug 100 into the base 200.

The restoring force of the base body 200 caused by the expansion of the opening area 222 is added to the outer edge portion 130 of the plug 100 through the braking portion 224. The restoring force increases as the contact portion of the plug 100 with respect to the braking portion 224 approaches the ridge line 133. That is, when the plug 100 is inserted into the base 200, under the condition that a strong restoring force is applied to the outer edge 130 of the plug 100 by the braking portion 224, the outer edge 130 of the plug 100 and the braking portion 224 interact with each other. The condition of friction. Even in this situation, since the plug 100 is formed of a resin (polyoxymethylene) that is harder than the base 200, the outer edge 130 of the plug 100 is not easily ground by the brake 224. That is, the generation of burrs from the plug 100 can be suppressed. In addition, since polyoxymethylene is used for the molding of the plug 100, the plug 100 has high sliding properties.

The longitudinal cross-sectional shape of the stopper 224 suppresses the generation of burrs from the base 200. In detail, around the opening edge 223, the braking portion 224 has a curved top. Therefore, even if the top of the braking portion 224 and the outer edge portion 130 of the plug 100 rub against each other with a strong force, it is difficult to generate burrs from the braking portion 224.

When the plug 100 is inserted into the base 200 until the ridgeline 133 of the plug 100 exceeds the opening area 222, the stopper 224 contacts the first tapered portion 101 of the plug 100. The first tapered portion 101 of the plug portion 100 is tapered in the opposite direction to the second tapered portion 102, and a part of the reversing force acts in the direction in which the plug portion 100 is pressed into the base 200. Therefore, if the plug 100 is pressed into the base 200 to some extent, the plug 100 can be easily accommodated in the base 200 afterwards.

Regarding the aforementioned embodiment, the base 200 is formed of high-density polyethylene (HDPE), and the plug 100 is formed of polyoxymethylene (POM). As an alternative, the base 200 may also be formed of other resin materials such as Low Density Polyethylene (LDPE) or Polypropylene (PP). The plug 100 may also be formed of other resin materials such as high-density polyethylene (HDPE) or polypropylene (PP).

Regarding the aforementioned embodiment, the flexural modulus of the plug 100 is higher than the flexural modulus of the base 200. Specifically, the molding resin for the plug 100 may be selected so that the bending modulus of the plug 100 becomes 1500 MPa or more and 4000 MPa or less. Preferably, the bending modulus of the plug 100 is 2000 MPa or more and 3500 MPa or less. More preferably, the bending modulus of the plug 100 is 2500 MPa or more and 3000 MPa or less. The molding resin for the base 200 may be selected so that the bending modulus of the base 200 becomes 500 MPa or more and 1500 MPa or less. The molding resin of the plug 100 and the base 200 can also be selected so that the difference in the bending modulus becomes 1000 MPa or more.

Regarding the aforementioned embodiment, the pressing portion 300 is formed of the same resin as the plug portion 100. Therefore, the pressing portion 300 may be formed of a resin material such as polyoxymethylene (POM), high-density polyethylene (HDPE), or polypropylene (PP), which can be used for molding the plug 100. As an alternative, the pressing part 300 may also be formed of a resin material different from the plug part 100. For example, when the plug part 100 is formed of high-density polyethylene (HDPE) or polypropylene (PP), the pressing part 300 may also be formed of polyoxymethylene (POM).

Since the pressing part 300 can be molded from a resin material different from the plug part 100, the bending modulus of the pressing part 300 may also be different from the bending modulus of the plug part 100. For example, the bending modulus of the pressing portion 300 may be set to the range of 2,000 MPa to 4,000 MPa. It is preferable to set the bending modulus of the pressing part 300 to the range of 2,500 MPa to 3,000 MPa.

Regarding the above-mentioned embodiment, the outer edge 130 of the plug 100 is integrally housed in the base 200. Alternatively, a part of the outer edge 130 may be exposed from the opening area 222 of the base 200. In this case, the plug 100 is formed in such a way that the area enclosed by the outer edge of the remaining part of the base 200 is wider than the opening area 222 of the base 200. As a result, it is possible to prevent the plug 100 from being caught in the braking portion 224 or the plug 100 from falling out of the base 200.

Regarding the above-mentioned embodiment, the protrusion 410 and the resistance protrusion 214 of the resistance portion 400 are provided to prevent the rotation of the plug 100. However, the shape of the protrusion 410 and the resistance protrusion 214 and the elastic force of the pressing portion 300 can also be designed in such a way that the resistance protrusion 214 covers the protrusion 410 when the bolt 100 is rotated by a strong force. When the resistance protrusion 214 covers the protrusion 410, the elastic leg portion 320 of the pressing portion 300 is compressed and deformed in the axial direction of the base 200. As a result, the return force of the elastic foot 320 increases. Since the increase in the reply force is added to the force imparted by the user to the human body part, the pressing force on the human body part is further increased, and the massage effect is improved.

Regarding the aforementioned embodiment, the pressing portion 300 is formed integrally with the plug portion 100. As an alternative, the pressing portion 300 may be formed separately from these. The medicinal solution supply tool having the pressing part 300 formed separately from the plug part 100 will be described with reference to FIGS. 7 to 9. FIG. 7 is a schematic front view of the pressing part 300 formed separately from the plug part 100. FIG. 8 is a schematic perspective view of the pressing portion 300 housed in the base 200. FIG. 9 is a schematic perspective view of the plug part 100 attached to the pressing part 300 of FIG. 7.

The pressing part 300 of FIG. 7 is different from the pressing part 300 shown in FIG. 2 only in the aspect of the ring member 330 having the front end of the front end leg 322 connected to the elastic foot part 320. The outer diameter of the ring member 330 is smaller than the outer diameter of the support ring portion 310. As shown in FIG. 8, a cross-shaped through hole 331 is formed in the center of the ring member 330. The through hole 331 penetrates along the axis direction of the base 200.

The pressing part 300 is housed in the base 200 as shown in FIG. 8. When no external force is applied to the elastic foot portion 320, the surface of the ring member 330 on the opposite side to the surface to which the elastic foot portion 320 is connected may also be located at the exposed cylindrical portion surrounded by the braking portion 224 and the tapered surface 225 (refer to FIG. 1) 220's internal space. Alternatively, when no external force is applied to the elastic leg portion 320, the ring member 330 may protrude to the front end side from the inner space where the cylindrical portion 220 is exposed.

The plug 100 of FIG. 9 differs from the plug 100 of FIG. 1 only in the aspect of having the shaft 122 protruding from the center of the base end surface 120 to the base end side. The shaft portion 122 has a cross-shaped cross section complementary to the cross-shaped through hole 331 of the ring member 330.

The shaft portion 122 of the plug portion 100 is inserted into the through hole 331 of the ring member 330 after the pressing portion 300 is housed in the base 200. After that, the plug 100 is pushed to the base end side and pressed into the base 200.

With regard to the medicinal solution supply tool described with reference to FIGS. 7 to 9, the pressing part 300 is different from the plug part 100, and therefore the resin material between the pressing part 300 and the plug part 100 can be easily made different from each other. That is, the manner in which the elastic force required for the pressing portion 300 can be obtained is independent of the resin material of the plug 100 and the resin material used for the molding of the pressing portion 300 is selected.

The rotation of the plug 100 is prevented by the shaft 122 being engaged with the cross-shaped through hole 331. Therefore, the medical solution supply tool can be used without rotating the plug 100. [Industrial availability]

The medicinal solution supply tool and the medicinal solution supply tool of the above-mentioned embodiment can be suitably used together with the container containing the medicinal solution.

100: plug 101: The first tapered part 102: second tapered part 110: Exposed 111: Coated surface 112: Massage Peak 113: Reservoir recess 120: Base end face 122: Shaft 130: outer edge 131: Inclined surface 132: contact surface 133: Edge 200: matrix 210: Insert the barrel 211: Cone section 212: Middle tube 213: Bottom Ring 214: Resistance protrusion 220: Exposed Tube 221: Shoulder 222: open area 223: open edge 224: Brake Department 225: Cone 226: limit surface 300: Pushing part 310: Support Ring 320: elastic feet 321: Spiral Foot 322: Front foot 330: Ring member 331: Through hole 400: Resistance 410: protruding 500: mouth tube

Fig. 1 is a schematic front view of the medicinal solution supply device. Fig. 2 is a schematic front view of a plug part and a pressing part of the medical solution supply tool. Fig. 3 is a schematic perspective view of a plug part and a pressing part of the medical solution supply tool. Fig. 4 is a schematic perspective view of a plug part and a pressing part of the medicinal solution supply tool. Fig. 5 is a schematic longitudinal cross-sectional view of the base of the medicinal solution supply tool. Fig. 6 is a schematic perspective view of the base of the medicinal solution supply tool. Fig. 7 is a schematic front view of a plug part of another liquid medicine supply tool. Fig. 8 is a schematic perspective view of a plug portion housed in a base body. Fig. 9 is a schematic perspective view of a plug part attached to a pressing part.

100: plug

101: The first tapered part

102: second tapered part

110: Exposed

111: Coated surface

112: Massage Peak

113: Reservoir recess

120: Base end face

130: outer edge

131: Inclined surface

132: contact surface

200: matrix

210: Insert the barrel

211: Cone section

212: Middle tube

213: Bottom Ring

220: Exposed Tube

221: Shoulder

224: Brake Department

225: Cone

226: limit surface

300: Pushing part

310: Support Ring

320: elastic feet

321: Spiral Foot

322: Front foot

400: Resistance

410: protruding

500: mouth tube

Claims (6)

A medicinal solution supply piece which can be installed in a container containing medicinal solution, the medicinal solution supply piece comprising: The cylindrical base body is configured to be able to be installed in the opening of the container, and an opening area for the liquid medicine to flow out is formed at the front end; The plug portion opens and closes the opening area by being displaced along the axis direction of the base body; and The pressing portion urges the plug portion in a manner to close the opening area, The base includes a stopper to prevent the plug from coming out of the base through the opening area, and the stopper has a top that bulges toward the shaft of the base, and The plug portion includes an outer edge portion that closes the opening area by abutting on the stopper portion, and is formed of a resin that is harder than the base. The liquid medicine supply member according to claim 1, wherein The outer edge portion includes an inclined surface that is inclined so that the plug portion gradually narrows toward the base end side. The medicinal solution supply according to claim 1 or claim 2, wherein The top includes a curved shape in a longitudinal section. The medicinal solution supply member according to any one of claims 1 to 3, wherein The pressing part is formed integrally with the plug part. A medicinal solution supply device, including: The liquid medicine supply piece according to any one of claim 1 to claim 4; and A container containing the medicinal solution and having the opening formed therein, The medical solution supply tool is attached to the opening of the container. A method for manufacturing a medicinal solution supply member, which can be installed in a container accommodating a medicinal solution, and the method for manufacturing the medicinal solution supply member includes: It is configured to be mountable to the opening of the container, and a cylindrical base is formed at the front end, and the cylindrical base is formed with an opening area through which the liquid medicine can flow out; A plug portion is formed of a resin that is harder than the base, and the plug opens and closes the opening area by being displaced along the axis of the base; and The plug is inserted into the base body through the opening area.

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