JP5630288B2 - Male member cover and male member with cover - Google Patents

Description

  The present invention relates to a male member cover mounted on a male member. Moreover, this invention relates to the male member with a cover by which the male member cover was mounted | worn with the male member.

  When a patient is transfused or transfused, or when extracorporeal blood circulation is performed during surgery, it is necessary to form a route (transport line) for transporting a liquid substance such as a drug solution or blood. A transportation line is generally formed by connecting containers, various instruments, tubes, and the like. As a method of connecting different members, a slip connection between a male luer as a male member and a needleless port is known (see, for example, Patent Documents 1 and 2). The needleless port includes a partition member (hereinafter referred to as “septum”) made of an elastic material such as rubber and having a linear slit (cut) formed at the center. By inserting a tubular body (male lure) without a sharp metal needle such as an injection needle into the slit of the septum, the needleless port and the male luer can be communicated with each other. When the male luer is removed from the needleless port, the septum slit closes immediately. As described above, the septum has resealability, and the male luer can be repeatedly inserted and removed.

  Some medicinal solutions are designated as powerful drugs, such as some anticancer drugs. Such a situation where dangerous chemical liquid leaks out and adheres to the operator's finger or the like, or the worker sucks the vapor of the chemical liquid must be avoided.

  In the above-described slip connection, when the male luer is removed from the needleless port, the slit of the septum is immediately closed, so that the possibility of liquid leaking from the needleless port is generally low. However, since the male luer before being inserted into the needleless port and after being extracted is exposed to the outside, there is a possibility that the liquid material leaks from the male luer.

  Patent Documents 3 and 4 describe a method of covering the male luer with an extendable cover in order to reduce the possibility that the liquid material leaks from the male luer not connected to the needleless port. A linear slit (cut) is formed at a position facing the tip of the male luer of the cover. When the male luer is not connected to the needleless port, the male luer is covered with a cover and the cover slit is closed. When trying to connect the male luer to the needleless port, the male luer passes through the slit in the cover and further through the slit in the septum. At this time, the cover is compressed and deformed. When the male luer is removed from the needleless port, the cover extends and returns to the initial state.

Japanese Patent No. 3389983 Japanese Patent No. 4163975 International Publication No. 2010/061742 (Figs. 7 and 8) International Publication No. 2010/061743 Pamphlet (FIGS. 10 and 11)

  However, there is a problem that the slit of the conventional cover described above may not be completely closed when the male luer is not connected to the needleless port. If the cover slit is slightly open, the liquid leaking from the male luer will leak out of the cover.

  The present invention solves the above-described problems of the conventional cover and reduces the possibility that a liquid material leaks from the cover to the outside world when the male member is in a disconnected state.

The male member cover of the present invention is a male member cover that covers at least the tip of a male member having a cylindrical shape in which a flow path through which a liquid material flows is formed, and includes an outer peripheral wall that can be elastically compressed and deformed, and the outer peripheral wall A cover body made of a flexible material, and a cap formed with an opening. The top plate is formed with a penetrating portion that penetrates the top plate. The cap is attached to the top plate while compressing the top plate so that the penetrating portion is sealed in a liquid-tight manner. At least a part of the penetrating portion sealed in a liquid-tight manner is exposed in the opening. When the outer peripheral wall is shortened, the cap is displaced integrally with the top plate.

  The male member with a cover of the present invention is a male member with a cover including a male member having a cylindrical shape in which a flow path through which a liquid material flows is formed, and a male member cover that covers at least a tip of the male member, The male member cover is the male member cover of the present invention.

  According to the present invention, the through portion is liquid-tightly sealed by attaching the cap to the top plate. Therefore, when the male member is not inserted into the penetrating portion, that is, when the male member is in a disconnected state, the penetrating portion is sealed, so that the possibility of liquid material leaking out of the cover from the male member is reduced. Can do.

1A is a perspective view seen from above the male member cover according to Embodiment 1 of the present invention, and FIG. 1B is a perspective view seen from below. 2A is a side view of the male member cover shown in FIGS. 1A and 1B, and FIG. 2B is a cross-sectional view taken along the plane including the line 2B-2B in FIG. 2A. 3A is a perspective view seen from above the cover body according to the first embodiment of the present invention in a state where no cap is attached, and FIG. 3B is a perspective view seen from below. 4A is a top view of the cover body according to the first embodiment of the present invention in a state where the cap is not attached, FIG. 4B is a side view thereof, and FIG. 4C is a view along a plane including line 4C-4C of FIG. 4B. It is arrow sectional drawing. 5A is a perspective view seen from above the cap according to the first embodiment of the present invention, FIG. 5B is a perspective view seen from below, FIG. 5C is a top view thereof, and FIG. 5D is a bottom view thereof. FIG. 6 is a perspective perspective view of the cover main body, seeing through the deformed state of the top plate to which the cap is attached in the first embodiment of the present invention. FIG. 7 is a cross-sectional view of the male member with a cover according to the first embodiment of the present invention. FIG. 8A is a side view of the lever-locked male connector to which the male member cover according to Embodiment 1 of the present invention is attached and the needleless port when not connected, and FIG. 8B is a cross-sectional view thereof. FIG. 9A is a side view of the lever-locked male connector to which the male member cover according to Embodiment 1 of the present invention is attached and a needleless port, and FIG. 9B is a cross-sectional view thereof. FIG. 10: is the perspective view seen from the upper direction of the male member cover concerning Embodiment 2 of this invention. FIG. 11A is a perspective view seen from above the cover body according to the second embodiment of the present invention with no cap attached, and FIG. 11B is a perspective view seen from below. FIG. 12 is a cross-sectional view of the cover main body according to the second embodiment of the present invention along the plane including the line 12-12 in FIG. 11A. 13A is a perspective view seen from above the cap according to Embodiment 2 of the present invention, FIG. 13B is a perspective view seen from below, FIG. 13C is a top view thereof, and FIG. 13D is a bottom view thereof.

  In the male member cover of the present invention, it is preferable that the cap is made of a material harder than the cover body. Thereby, when connecting a male member with a female member, since the pushing force received from the female member side can be transmitted to a top plate without waste, a male member can be easily penetrated to the penetration part of a top plate. In addition, the outer peripheral wall can be reliably compressed and deformed.

  The cap preferably compresses the top plate so that the penetrating portion is liquid-tightly sealed. Thereby, when the male member is not inserted in the penetration part, a liquid-tight seal can be formed in the penetration part by a simple method.

  It is preferable that the cap has a recess, and the cap compresses the top plate by fitting the top plate into the recess. Thereby, a compressive force can be applied to the top plate with a simple configuration.

  The cap preferably compresses the top plate in a direction perpendicular to the long axis of the penetrating portion. Thereby, the penetration part can be liquid-tightly sealed by efficiently using the compressive force applied by the cap to the top plate.

  It is preferable that urging forces in directions facing each other are applied to opposite edges of the penetrating portion. Thereby, since the sealing characteristic of the penetration part when the male member is not inserted in the penetration part further improves, the possibility that the liquid material leaks out of the cover can be further reduced.

  It is preferable that the penetrating part exposed in the opening has a “−” shape. Thereby, the opening shape of a penetration part can be simplified. In addition, when the top plate is compressed, it is only necessary to compress at least in the direction orthogonal to the long axis direction of the penetrating portion, so that the design of the cap and the top plate can be simplified.

  The top plate is formed with an annular groove surrounding the penetrating portion, and a surface of the cap facing the top plate is formed with an annular rib, and the rib fits into the groove. Preferably it is. Thereby, it can prevent that a cap falls off from a top plate.

  In the above, it is preferable that the groove is deeper than the height of the rib. Thereby, when a male member penetrate | invades into the penetration part of a top plate, it becomes easy to elastically deform a top plate.

  Moreover, it is preferable that the said groove | channel before the said cap is mounted | worn to the said top plate is an ellipse, and the said rib is circular. Thereby, since the penetration part is arranged in the circular fitting shape of the groove and the rib, it becomes easy to manage the deformation of the peripheral part of the penetration part of the top plate when the male member is inserted into the penetration part. .

  In the state where the cap is not attached to the top plate, the through portion may be a through hole. Here, it is preferable that the “through hole” is opened to such an extent that the other side can be seen from one side of the top plate through the through hole.

  Alternatively, in the state where the cap is not attached to the top plate, the through portion may be a linear slit. Here, the “slit” means that opposing edges constituting the slit are approaching or in contact with each other to the extent that it is substantially difficult to see the other side from one side of the top plate through the slit. preferable.

  The outer peripheral wall preferably has a bellows shape. Thereby, the outer peripheral wall which compresses and deforms elastically in the longitudinal direction of the male member can be provided easily and at low cost.

  In the above-mentioned male member with a cover according to the present invention, when the male member is inserted into the female member, the outer peripheral wall is compressed and deformed, and the male member sequentially connects the through portion of the top plate and the opening of the cap. It is preferable to penetrate.

  It is preferable that the penetration part of the top plate is provided at a position where the tip of the male member faces. Thereby, when inserting a male member in a female member, a male member can penetrate | invade easily in a penetration part.

  When the male member does not penetrate the penetrating portion of the top plate, it is preferable that the opening on the front end side of the flow path of the male member is closed by the top plate. Thereby, the possibility that the liquid in the flow path of the male member leaks into the male member cover can be reduced.

  The male member may be a male luer inserted into an elastic partition member in which a linear slit is formed.

  Below, this invention is demonstrated in detail, showing suitable embodiment. However, it goes without saying that the present invention is not limited to the following embodiments. For convenience of explanation, the drawings referred to in the following description show only the main members necessary for explaining the present invention in a simplified manner among the constituent members of the embodiment of the present invention. Therefore, the present invention can include any member not shown in the following drawings. In addition, the dimensions in the following drawings do not faithfully represent actual dimensions, dimension ratios, and the like.

(Embodiment 1)
1A is a perspective view seen from above a male member cover (hereinafter simply referred to as “cover”) 10 according to Embodiment 1 of the present invention, FIG. 1B is a perspective view seen from below, FIG. 2A is a side view thereof, 2B is a cross-sectional view taken along the line along the plane including line 2B-2B in FIG. 2A. The cover 10 according to the first embodiment includes a cover main body 20 and a cap 30 attached to the cover main body 20. For convenience of the following description, the upper side of the paper surface of FIGS. 2A and 2B is referred to as “upper side” of the cover 10 and the lower side is referred to as “lower side” of the cover 10. However, the upper and lower sides do not mean the upper and lower sides of the actual use state of the cover 10.

  3A is a perspective view seen from above the cover body 20 without the cap 30 attached, FIG. 3B is a perspective view seen from below, FIG. 4A is a top view thereof, FIG. 4B is a side view thereof, FIG. FIG. 4B is a cross-sectional view taken along the line along the plane including line 4C-4C in FIG.

  The cover body 20 includes an outer peripheral wall 21 having a substantially cylindrical shape, a top plate 23 provided at the upper end of the outer peripheral wall 21, and a base portion 28 provided at the lower end of the outer peripheral wall 21. The cover main body 20 can be integrally formed of a flexible material (for example, silicon rubber or isoprene rubber).

  The outer peripheral wall 21 can be elastically compressed and deformed so that its vertical dimension is shortened. In order to realize this, in the present embodiment, the outer peripheral wall 21 has a bellows shape in which the outer dimension and the inner dimension are changed in a certain cycle in the vertical direction within a certain range. In the present embodiment, the cross-sectional shape along the horizontal direction of the outer peripheral wall 21 is a circle, but it may be an arbitrary shape such as a polygon such as a quadrangle or a hexagon.

  A through hole 24 is formed in the center of the top plate 23 as a through portion so as to penetrate the top plate 23 in the vertical direction. As shown in FIG. 4A, an axis along the direction in which the opening dimension of the through hole 24 is maximized is a long axis 24a, and an axis orthogonal to the long axis 24a is a short axis 24b. When viewed from above, the end edge of the through hole 24 includes a pair of end edges 25a and 25b having an arc shape (or an arc shape). The end edges 25a and 25b are connected at both ends in the direction of the long axis 24a, and are disposed opposite to each other in the direction of the short axis 24b so that the distance between the end edges 25a and 25b is maximized at the center in the direction of the long axis 24a. Yes.

  An annular groove (depression) 26 surrounding the through hole 24 is formed on the top surface of the top plate 23. The shape of the groove 26 viewed from above is an ellipse having the major axis 24a of the through hole 24 as a minor axis and the minor axis 24b of the through hole 24 as a major axis. As shown in FIG. 4C, the depth of the groove 26 is D.

  The outer shape of the top plate 23 viewed from above is a deformed rectangle (or deformed octagon) in which the outer dimension Wb of the through hole 24 in the minor axis 24b direction is longer than the outer dimension Wa of the through hole 24 in the major axis 24a direction. . The aspect ratio Wb / Wa of the top plate 23 is not particularly limited, but is preferably greater than 1 and 1.5 or less.

  The base part 28 is for fixing the cover 10 to a male member or its base. A hole (through hole) 29 for inserting a male member is formed in the center of the base portion 28. In order to fix the cover 10, the base portion 28 may be provided with an arbitrary engagement shape, fitting shape or the like (not shown) (see FIG. 8B described later).

  5A is a perspective view seen from above the cap 30, FIG. 5B is a perspective view seen from below, FIG. 5C is a top view thereof, and FIG. 5D is a bottom view thereof.

  The cap 30 has an annular shape in which a circular opening 31 is formed at the center.

  As shown in FIG. 5B and FIG. 5D, a recess 35 that is recessed relative to the outer peripheral edge is formed on the lower surface of the cap 30. The contour shape of the concave portion 35 viewed from below is a shape in which convex arcs are provided at the four corners of the square toward the center. The center of the square coincides with the center of the circular edge of the opening 31. The distance between the two parallel faces of the peripheral wall 36 forming the recess 35 is W. The depth of the recess 35 is preferably substantially the same as or deeper than the thickness (vertical dimension) of the top plate 23 of the cover 10.

  An annular rib (protrusion) 33 surrounding the opening 31 is formed on the lower surface of the cap 30. The shape of the rib 33 viewed from below is a circle concentric with the circular edge of the opening 31. The height of the rib 33 measured from the bottom surface of the recess 35 is H. The rib 33 is formed in the recess 35.

  The cap 30 has a 4-fold rotationally symmetric shape (a shape that coincides with the shape before rotation every 90 ° rotation). Thereby, when attaching the cap 30 to the top plate 23 of the cover main body 20, the cap 30 can be attached without considering the direction with respect to the long axis 24a and the short axis 24b.

  The cap 30 is preferably made of a material that is harder than the cover body 20 and has a high rigidity that can be regarded as a substantially rigid body. Specifically, the cap 30 is not particularly limited, but can be integrally formed using, for example, polyacetal, polycarbonate, or the like.

  As shown in FIGS. 1B and 2B, the cap 30 is attached to the cover body 20 so that the top plate 23 of the cover body 20 is housed in the recess 35. The outer dimension Wb of the top plate 23 is larger than the inner dimension W of the recess 35 of the cap 30. Accordingly, the cap 30 elastically compresses and deforms the top plate 23 in the direction of the short axis 24 b of the through hole 24. FIG. 6 is a perspective view of the cover body 20 seen through the top plate 23 that has been compressed and deformed by the cap 30. By this compression deformation, end edges 25a and 25b of the through hole 24 formed in the top plate 23 facing each other in the direction of the short axis 24b are brought into close contact with each other, and the through hole 24 is sealed in a liquid-tight manner. Preferably, the end edges 25a and 25b of the closed through-hole 24 are urged toward each other. Further, the shape of the groove 26 on the top plate 23 is changed from an elliptical shape to a circular shape, and the circular rib 33 of the cap 30 is fitted into the circularly deformed groove 26. By fitting the rib 33 into the groove 26, it is possible to prevent the cap 30 from falling off the top plate 23. Since the depth D of the groove 26 is deeper than the height H of the rib 33, the rib 33 does not reach the deepest portion of the groove 26, and a gap 27 is formed between the top of the rib 33 and the deepest portion of the groove 26. (See FIG. 2B). As shown in FIG. 1A, the closed through hole 24 formed in the top plate 23 is exposed in the opening 31 of the cap 30. The through-hole 24 has a “−” (minus) character shape with end edges 25 a and 25 b in close contact with each other. When the outer peripheral wall 21 of the cover body 20 is shortened in the vertical direction, the cap 30 is displaced in the vertical direction integrally with the top plate 23.

  FIG. 7 is a cross-sectional view of a male member with a cover in which the cover 10 described above is attached to the male luer 40. The male luer 40 has a cylindrical shape in which a flow path 41 through which a liquid material flows is formed along the longitudinal direction thereof. The outer peripheral surface of the male luer 40 is preferably a tapered surface whose outer diameter decreases as the distance from the base 48 increases. The male luer 40 may be a known male luer having a cylindrical shape that can be inserted into the slit of the septum. The cover 10 is integrated with the male luer 40 by fixing the base 28 to the base 48 of the male luer 40. The method for fixing the base 28 to the base 48 is not particularly limited, and can be appropriately selected from known methods used for fixing the cover to the male luer, such as engagement, fitting, adhesion, and fusion. The through hole 24 of the top plate 23 of the cover body 20 faces the tip 43 of the male luer 40. As described above, the through hole 24 is closed by the compressive force of the cap 30 and is liquid-tightly sealed, so that the liquid material in the flow path 41 leaks out of the cover 10 through the through hole 24. There is no. Preferably, a portion where the through hole 24 of the top plate 23 is formed in close contact with the tip 43 of the male luer 40, and the opening on the tip 43 side of the flow channel 41 is closed by the top plate 23. Thereby, the liquid substance in the flow path 41 does not leak into the cover 10.

  8A is a side view of a lever-locked male connector (hereinafter simply referred to as “male connector”) 50 and a needleless port 70 to which the cover 10 is attached, and FIG. 8B is a sectional view thereof. 8A and 8B, the same members as those shown in FIGS. 1 to 7 described above are denoted by the same reference numerals.

  The male connector 50 includes a tube body 51 through which a liquid material passes. One end of the tube 51 is a male luer 40 inserted into the septum 71 of the needleless port 70, and the other end is a base end 52 to which a flexible tube (not shown) is connected. The cover 10 is attached to the male luer 40 as described in FIG.

  A hood 55 having a substantially cylindrical shape coaxial with the tube body 51 is provided integrally with the tube body 51 so as to surround the male luer 40. A pair of lock levers 60 substantially parallel to the tube body 51 are provided so as to sandwich the tube body 51. The lock lever 60 is connected to the tube body 51 by a support piece 57 provided at a substantially central position in the longitudinal direction. The lock lever 60 includes a lock piece 61 on one side with respect to the support piece 57 and an operation piece 65 on the other side. The hood 55 is cut out so that the lock piece 61 directly faces the male luer 40. An engaging claw 62 is formed at the tip of the surface of the lock piece 61 facing the male luer 40.

  The lock lever 60 including the lock piece 61 and the operation piece 65 can be regarded as a substantially rigid body. On the other hand, the support piece 57 that supports the lock lever 60 can be bent elastically. Therefore, when the support piece 57 is curved, the pair of lock levers 60 are elastically swung. For example, when the operation pieces 65 are displaced so as to approach each other, the lock pieces 61 are displaced so as to be separated from each other.

  The septum 71 of the needleless port 70 is a disk-shaped partition member made of an elastic material such as rubber and having a linear slit (cut) 72 formed at the center thereof. The septum 71 is sandwiched and fixed between a substantially cylindrical base portion 73 and a port cap 75. The port cap 75 includes a cylindrical portion 76 that fits with the base portion 73, and a pressing plate 77 provided at one end of the cylindrical portion 76. A circular opening 78 is formed in the center of the pressing plate 77. The slit 72 of the septum 71 is exposed in the opening 78. An annular protrusion 79 that is continuous in the circumferential direction is formed on the outer peripheral surface of the cylindrical portion 76.

  The configurations of the male connector 50 and the needleless port 70 are not particularly limited except for the cover 10 of the present embodiment, and may be a known configuration described in Patent Document 2, for example.

  The male connector 50 and the needleless port 70 are connected as follows.

  As shown in FIGS. 8A and 8B, the male connector 50 is opposed to the needleless port 70, and the male connector 50 is pressed against the needleless port 70 so that the port cap 75 is inserted into the hood 55.

  The cap 30 of the cover 10 contacts the port cap 75 of the needleless port 70. Since the cap 30 is made of a hard material that can be regarded as a rigid body, the pressing force received from the port cap 75 is transmitted almost directly to the top plate 23. As a result, the tip 43 of the male luer 40 is pressed against the top plate 23 of the cover body 20, elastically deforms the top plate 23, and enters the through hole 24. Since the gap 27 is formed between the top of the rib 33 and the deepest part of the groove 26 (see FIG. 2B), the top plate 23 against which the male luer 43 is pressed is easily deformed, and the male luer 43 is formed on the top plate 23. It easily enters the through hole 24. The male luer 40 passes through the through hole 24 and the opening 31 of the cap 30 in this order. Further, the male luer 40 is inserted into the slit 72 of the septum 71. In this process, the outer peripheral wall 21 of the cover body 20 is elastically compressed and deformed in the vertical direction, and the cap 30 is displaced integrally with the top plate 23.

  The male luer 40 is inserted into the septum 71, and the engagement claw 62 of the lock lever 60 is engaged with the annular protrusion 79 of the port cap 75 in a state where the male luer 40 and the needleless port 70 communicate with each other.

  As a result, the male connector 50 and the needleless port 70 can be connected as shown in FIGS. 9A and 9B. With the cap 30 in contact with the port cap 75, the male luer 40 passes through the through hole 24 of the top plate 23 and the slit 72 of the septum 71. The outer peripheral wall 21 is elastically compressed and deformed.

  The male connector 50 and the needleless port 70 are separated as follows.

  The pair of operation pieces 65 of the male connector 50 are displaced so as to approach each other, and the engagement between the engagement claw 62 of the lock piece 61 and the annular protrusion 79 of the port cap 75 is released. In this state, the male connector 50 is pulled out from the needleless port 70. The outer peripheral wall 21 immediately expands due to its elastic recovery force. When the male luer 40 comes out of the through hole 24 of the top plate 23, the through hole 24 is immediately elastically recovered and closed. Further, the slit 72 of the septum 71 is also closed immediately after the male luer 40 is removed. Thus, the initial state shown in FIGS. 8A and 8B is restored.

  As described above, according to the first embodiment, the cap 30 elastically deforms the top plate 23 so that the through hole 24 is closed. Preferably, in a state in which the through hole 24 is closed, the urging forces in the direction toward each other are applied to the end edges 25a and 25b of the through hole 24 facing the short axis 24b. Therefore, before the male luer 40 is inserted into the through hole 24 and after the inserted male luer 40 is pulled out of the through hole 24, the through hole 24 is closed by the compressive force of the cap 30, and a liquid-tight seal is obtained. Is formed. As a result, when the male luer 40 is not connected to the septum 71, the liquid in the flow channel 41 of the male luer 40 may leak out of the cover 10 through the through hole 24. Very low compared to the cover. Further, even if the male luer 40 is repeatedly inserted into and removed from the through hole 24 of the top plate 23, the resealability of the through hole 24 is hardly deteriorated.

  The cover 10 of the first embodiment may have a larger frictional force on the outer peripheral surface of the male luer 40 than the conventional cover. As a result, after the male luer 40 is pulled out from the septum 71, the outer peripheral wall 21 may not immediately extend. However, such a problem can be solved by adjusting the strength (elastic force) of the outer peripheral wall 21, the thickness of the top plate 23, the deformation amount of the top plate 23 by the cap 30, and the like.

(Embodiment 2)
Hereinafter, the second embodiment will be described with a focus on differences from the first embodiment. In the drawings shown below, the same members as those described in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

  FIG. 10 is a perspective view of a male member cover (hereinafter simply referred to as “cover”) 110 according to the second embodiment as viewed from above. Similar to the cover 10 of the first embodiment, the cover 110 of the second embodiment includes a cover main body 120 and a cap 130 attached to the cover main body 120.

  FIG. 11A is a perspective view seen from above the cover body 120 according to the second embodiment of the present invention when the cap 130 is not attached, and FIG. 11B is a perspective view seen from below. 12 is a cross-sectional view of the cover main body 120 along the plane including the line 12-12 in FIG. 11A.

  The outer shape of the cover body 120 of the second embodiment viewed from above the top plate 123 is a circle having an outer diameter Dt. On the top surface of the top plate 123, a circular groove 126 concentric with the circular top plate 123 having an outer diameter Dt is formed.

  In the center of the top plate 123, a linear slit (cut) 124 that penetrates the top plate 123 in the vertical direction is formed as a penetrating portion. The slit 124 viewed from above has a “−” (minus) shape. The opposite edges 125a and 125b forming the slit 124 are preferably in contact with each other when the cap 130 is not attached, but may be slightly separated from each other.

  13A is a perspective view seen from above the cap 130 according to the second embodiment, FIG. 13B is a perspective view seen from below, FIG. 13C is a top view thereof, and FIG. 13D is a bottom view thereof.

  As shown in FIG. 13B and FIG. 13D, a recess 135 that is recessed relative to the outer peripheral edge is formed on the lower surface of the cap 130. The contour shape of the concave portion 135 viewed from below is a circular shape having a diameter Dc. The inner diameter Dc of the recess 135 is preferably equal to or smaller than the outer diameter Dt of the top plate 123. Reference numeral 136 is a peripheral wall surrounding the recess 135. The depth of the recess 135 is preferably substantially the same as or deeper than the thickness (vertical dimension) of the top plate 123 of the cover 10.

  Similar to the first embodiment, an opening 31 is formed in the center of the cap 130. An annular rib (protrusion) 33 surrounding the opening 31 is formed in the recess 135 on the lower surface of the cap 130. The edge of the opening 31 and the rib 33 have a circular shape concentric with the circular concave portion 135 having a diameter Dc.

  As shown in FIG. 10, as in the first embodiment, the cap 130 is attached to the cover body 120 so that the top plate 123 of the cover body 120 is accommodated in the recess 135. At this time, the circular rib 33 of the cap 130 is fitted into the circular groove 126 on the top plate 123. By fitting the rib 33 into the groove 126, it is possible to prevent the cap 130 from falling off the top plate 123. A slit 124 formed in the top plate 123 is exposed in the opening 31 of the cap 130.

  By attaching the cap 130 to the top plate 123, the slit 124 is sealed in a liquid-tight manner. When the slit 124 does not form a liquid-tight seal when the cap 130 is not attached to the top plate 123, the top plate 123 is compressed by the cap 130 so that the top plate 123 is reduced in diameter. In order to compress the top plate 123, the inner diameter Dc of the recess 135 of the cap 130 may be set smaller than the outer diameter Dt of the top plate 123. Thereby, the top plate 123 is elastically compressed and deformed in the diameter direction. Therefore, when the male luer 40 is not inserted into the slit 124, the edges 125a and 125b of the slit 124 can be securely adhered to form a liquid-tight seal. Furthermore, it is preferable that the end edges 125a and 125b of the closed slit 124 are urged toward each other by the compressive force applied by the cap 130. The ratio Dc / Dt of the inner diameter Dc to the outer diameter Dt is not particularly limited, but is preferably 0.9 or more and less than 1.0.

  The cover 110 of the second embodiment configured as described above can be used by being attached to the male luer 40 in the same manner as the cover 10 of the first embodiment (see FIGS. 7 to 9).

  When inserting the male luer 40 into the female member, as in the first embodiment, the male luer 40 elastically deforms the top plate 123 and enters the slit 124, and further penetrates the opening 31 of the cap 130. In this process, the outer peripheral wall 21 of the cover main body 120 is elastically compressed and deformed, and the cap 130 is displaced integrally with the top plate 123.

  When the male luer 40 is pulled out from the female member, the outer peripheral wall 21 immediately expands due to its elastic recovery force. When the male luer 40 comes out of the slit 124 of the top plate 123, the slit 124 immediately recovers and closes. Thus, the initial state shown in FIG. 10 is restored.

  Also in the second embodiment, the slit 124 is liquid-tightly sealed by attaching the cap 130 to the top plate 123. That is, before the male luer 40 is inserted into the slit 124, and after the inserted male luer 40 is pulled out of the slit 124, a liquid-tight seal is formed in the slit 124. As a result, when the male luer 40 is not connected to the female member, the liquid in the flow channel 41 of the male luer 40 may leak out of the cover 110 through the through hole 24. Similarly very low. Further, even if the male luer 40 is repeatedly inserted into and removed from the slit 124 of the top plate 123, the resealability of the slit 124 is hardly deteriorated.

  In the state where the cap is not attached to the top plate, the distance between the edges 125a and 125b forming the slit 124 is much smaller than the distance between the edges 25a and 25b forming the through hole 24 of the first embodiment. . Accordingly, the compression force (or the amount of compressive deformation of the top plate) applied by the cap to the top plate is generally smaller in the second embodiment than in the first embodiment. Depending on the distance between the edges 125a and 125b forming the slit 124, the compression force applied to the top plate 123 by the cap 130 may be extremely small, and the present invention includes such a case.

  In the second embodiment, since the outer shape of the top plate 123 and the concave portion 135 of the cap 130 are both circular, it is not necessary to align both in the rotational direction when the cap 130 is attached to the top plate 123. Further, as described above, the amount of compressive deformation of the top plate 123 by the cap 130 is generally small. Accordingly, the cover 110 of the second embodiment is easier to assemble than the cover 10 of the first embodiment.

  In the above example, the cap 130 elastically compresses the top plate 123 isotropically, but the present invention is not limited to this. For example, as in the first embodiment, the compression may be performed elastically in a direction perpendicular to the longitudinal direction of the slit 124.

  Except for the above, the second embodiment is the same as the first embodiment.

  The above-described first and second embodiments are merely examples. The present invention is not limited to the first and second embodiments, and can be modified as appropriate.

  The shape of the edge of the penetrating part when the cap is not attached to the top plate is a shape constituted by a pair of arcs connected at both ends, such as the through hole 24 of the first embodiment, or the slit of the second embodiment. It is not limited to a “−” (minus) character shape such as 124. For example, the shape may be an ellipse, an oval, a rhombus, or a shape approximate to any of these. When the opening shape of the penetrating part is a so-called “long hole” whose opening dimension is long in any one direction, the penetrating part is “−” by compressing the top plate in a direction perpendicular to the long axis. It can be closed in the shape of a letter, and the same effect as in the above embodiment can be obtained.

  The external shape of the through portion in the state where the cap is attached to the top plate is not limited to the “−” shape as in the first and second embodiments, and is, for example, a “+” (plus) shape. Also good. In this case, the edge shape of the penetrating portion when no compressive force is applied to the top plate may be a substantially cross shape, and a substantially uniform compressive force may be applied to the top plate in the vertical and horizontal directions using a cap.

  The penetration part does not need to be opened in a state where the cap is not attached to the top plate. In other words, like the slit 124 of the second embodiment, the through portion may be closed or appear to be closed before the cap is attached. Even if it is such a penetration part, the sealing characteristic of a penetration part can be improved by attaching a cap.

  In Embodiments 1 and 2 described above, all the edges of the through portions 24 and 124 are exposed in the opening 31 in a state where the cap is attached to the top plate, but only a part thereof is exposed in the opening 31. The rest may be covered with a cap.

  The fitting shape of the top plate and the cap is not limited to the first and second embodiments. By attaching a cap to the top plate, the penetrating portion may be sealed in a liquid-tight manner. Here, the “liquid-tight seal” means that the liquid material does not flow from one side of the top plate to the other through the penetration part.

  In the first and second embodiments, the example in which the male member cover is provided on the male luer provided in the lever lock male connector 50 has been described. However, the present invention is applied to the male luer provided in the male connector other than the lever lock male connector 50. A male member cover may be provided.

  In the first and second embodiments, the case where the male member is a male luer and the female member is a septum has been described, but the present invention is not limited to this. For example, the female member may be a rubber stopper of a vial, and the male member may be a resin needle that is pierced into the rubber stopper. The male member of the present invention includes various members that are communicated by being inserted (including puncture) into a counterpart member (female member).

  Although there is no restriction | limiting in particular in the utilization field of this invention, It can utilize preferably for the male member used with the transport line for performing infusion, blood transfusion, extracorporeal blood circulation, etc. Moreover, it can also utilize for the male member of the various connectors used when preparing the chemical | medical solution etc. which are administered to a patient. In particular, it can be preferably used in the field of handling dangerous drugs (for example, anticancer drugs) that need to be prevented from leaking or evaporating. Furthermore, it can also be used for male members used in various fields for handling liquid substances such as foods other than medical products.

10,110 Male member cover (cover)
20, 120 Cover body 21 Outer peripheral wall 23, 123 Top plate 24 Through hole (through part)
24a Long axis 24b of the through hole Short axis 25a, 25b, 125a, 125b of the through hole Edge 26 of the through part, 126 Groove 28 Base 124 Slit (through part)
30, 130 Cap 31 Opening 33 Rib 35, 135 Recess 40 Male luer (male member)
41 Flow path of male luer (male member) 43 Tip 71 of male luer (male member) Septum (female member, elastic partition wall member)

Claims (17)

A male member cover that covers at least a tip of a male member having a cylindrical shape in which a flow path through which a liquid material flows is formed,
A cover body made of a flexible material, including an outer peripheral wall that is elastically compressible and deformable, and a top plate provided at one end of the outer peripheral wall;
A cap formed with an opening,
The top plate has a penetrating portion that penetrates the top plate,
The cap is attached to the top plate while compressing the top plate so that the penetrating portion is sealed in a liquid-tight manner,
At least a part of the penetrating portion sealed in a liquid-tight manner is exposed in the opening;
The male member cover, wherein the cap is displaced integrally with the top plate when the outer peripheral wall is shortened.   The male member cover according to claim 1, wherein the cap is made of a material harder than the cover main body. The male member cover according to claim 1 or 2 , wherein a concave portion is formed in the cap, and the cap compresses the top plate by fitting the top plate into the concave portion. The cap, the male member cover according to any one of claims 1 to 3, which compresses the top plate in a direction perpendicular to the longitudinal axis of the through section. The male member cover according to any one of claims 1 to 4 , wherein urging forces in a direction toward each other are applied to opposing edges of the penetrating portion. Male member cover according to any one of claims 1 to 5 which is shaped - the through portion exposed in the opening of the "." The top plate is formed with an annular groove surrounding the penetrating portion, and a surface of the cap facing the top plate is formed with an annular rib, and the rib fits into the groove. male member cover according to any one of claims 1 to 6, are. The male member cover according to claim 7 , wherein the groove is deeper than a height of the rib. The male member cover according to claim 7 or 8 , wherein the groove before the cap is attached to the top plate is elliptical and the rib is circular. The male member cover according to any one of claims 1 to 9 , wherein the through portion is a through hole in a state where the cap is not attached to the top plate. In a state in which the cap is not mounted on the top plate, the male member cover according to any one of claims 1 to 9, wherein the penetrating portion is a linear slit. The outer peripheral wall male member cover according to any one of claims 1 to 11 having a bellows shape. A male member with a cover provided with a male member having a cylindrical shape in which a flow path for liquid material is formed, and a male member cover that covers at least the tip of the male member,
Covered male member, wherein the male member cover is male members cover according to any one of claims 1 to 12. The male with a cover according to claim 13 , wherein when the male member is inserted into the female member, the outer peripheral wall is compressed and deformed, and the male member sequentially penetrates the through portion of the top plate and the opening of the cap. Element. The said penetration part of the said top plate is a male member with a cover of Claim 13 or 14 provided in the position where the front-end | tip of the said male member opposes. The cover according to any one of claims 13 to 15 , wherein when the male member does not penetrate the penetrating portion of the top plate, the opening on the front end side of the flow path of the male member is closed by the top plate. With male member. The male member with a cover according to any one of claims 13 to 16 , wherein the male member is a male luer inserted into an elastic partition member in which a linear slit is formed.

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