JP2013165785A - Shunt cap set and extracorporeal circulating circuit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shunt cap set capable of suppressing unexpected release of a connection state of shunt caps with each other.SOLUTION: A shunt cap set 50 includes a first shunt cap 100 having a first opening 120 and an engaging part 130, and a second shunt cap 200 having a second opening 220 and a part 230 to be engaged. The first opening 120 and the second opening 220 are configured so as to be fitted to each other. The engaging part 130 is configured so as to be engaged with the part 230 to be engaged in the state of fitting the first opening 120 and the second opening 220. The first shunt cap 100 and the second shunt cap 200 are configured so as to release the connection state of the first opening 120 and the second opening 220 only when the engaged state of the engaging part 130 and the part 230 to be engaged is released.

Description

  The present invention relates to a shunt cap set and an extracorporeal circuit.

  An extracorporeal circuit used for hemodialysis or the like is usually a process of introducing and filling a priming solution (for example, physiological saline) into the extracorporeal circuit every time it is used (so-called a process for removing foreign substances and air in the extracorporeal circuit) Priming process).

  Conventionally, as a shunt cap set used for the priming process, a shunt cap set in which a connecting portion between the shunt caps is configured so that male-female fitting is possible is known (for example, see Patent Document 1). A conventional shunt cap set includes a shunt cap having a male connection portion and a shunt cap having a female connection portion. One of the two shunt caps is connected to the arterial circuit, and the other is connected to the venous circuit. The two shunt caps are configured so that male-female fitting is possible at the male and female connection portions.

  According to the conventional shunt cap set, it is possible to relatively easily prime the extracorporeal circuit by connecting the connecting portions of the shunt caps.

Japanese registered utility model No. 3054661

  By the way, if the connection state between the shunt caps is unexpectedly released during the priming process, the priming liquid may leak from the shunt cap and the work site may be submerged. In addition, if the connection state between the shunt caps is unexpectedly released, the connection portion of the shunt caps is exposed to the outside air at an undesired timing, and there is a concern about contamination problems.

  Then, this invention was made in view of such a situation, and it aims at providing the shunt cap set and extracorporeal circuit which can suppress that the connection state of shunt caps cancels | releases unexpectedly. To do.

  The shunt cap set of the present invention is provided in the tubular first main body, the first main body, the first opening leading to the internal flow path of the first main body, and the first main body. A first shunt cap having an engagement portion, a tubular second main body portion, a second opening portion provided in the second main body portion and leading to an internal flow path of the second main body portion; and the second main body portion. A second shunt cap provided with an engaged portion provided, wherein the first opening and the second opening are configured to be fitted to each other, and the engaging portion is configured to be the first opening. The first shunt cap and the second shunt cap are configured to be engageable with the engaged portion in a state in which the portion and the second opening are fitted. Only when the engaged state with the engaged portion is released, the first opening and the second opening It is releasably constituting a connection state between the mouth portion.

  In the shunt cap set of the present invention, it is preferable that the engaging portion is provided in the vicinity of the first opening, and the engaged portion is provided in the vicinity of the second opening. .

  In the shunt cap set of the present invention, the engaging portion and the engaged portion are engaged with each other by rotating the first shunt cap around the tube axis of the first body portion. It is preferable that the state can be released.

  In the shunt cap set of the present invention, the engaging portion is provided at an extension portion extending toward the first opening portion along the tube axis of the first main body portion, and at a tip portion of the extension portion. And a notch provided at a position corresponding to the engaging portion when the first opening and the second opening are fitted to each other. And the protrusion protrudes in a direction opposite to the rotation direction of the first shunt cap when the engagement state between the engagement portion and the engaged portion is released. It is preferable.

  In the shunt cap set of the present invention, it is preferable that the notch width of the notch is set to a value larger than the sum of the width of the extension and the protrusion length of the protrusion.

  In the shunt cap set of the present invention, the engaging portion and the engaged portion apply an external force to a part of the engaging portion from the outer surface side to the inner surface side of the first main body portion. It is preferable that the mutual engagement state can be released.

  In the shunt cap set of the present invention, the engaging portion extends along the tube axis of the first main body portion, and extends along the tube axis of the first main body portion. A pressing portion extending to the opposite side of the first opening; a supporting portion that is positioned between the extending portion and the pressing portion and supports the extending portion and the pressing portion; and a tip of the extending portion And the engaged portion is provided at least at a position corresponding to the engaging portion when the first opening and the second opening are fitted to each other. The protruding portion protrudes from the outer surface side of the first main body portion toward the inner surface side, and the extending portion is an outer surface of the first main body portion with respect to the pressing portion. Configured to displace from the inner surface side to the outer surface side of the first main body when an external force from the side toward the inner surface side is applied It is preferred that the.

  The extracorporeal circuit according to the present invention includes an arterial circuit, a venous circuit, and a shunt cap set for connecting the arterial circuit and the venous circuit, and the shunt cap set includes the shunt cap of the present invention. Is a set.

  According to the shunt cap set of the present invention, since the engaging portion and the engaged portion are provided, the first shunt cap and the first shunt cap are provided unless the engaged state between the engaging portion and the engaged portion is released. It becomes possible to continue to maintain the connection state with the two shunt caps. That is, it is possible to prevent the connection state between the shunt caps from being released unexpectedly.

  According to the extracorporeal circuit of the present invention, since the above-described excellent shunt cap set is provided, the extracorporeal circuit is capable of suppressing the connection state between the shunt caps from being released unexpectedly.

  In addition, although each member etc. which were described in the claim is attached | subjected with the code | symbol in parenthesis in order to make an understanding of an invention easy, this invention is limitedly interpreted based on those code | symbols. Absent.

FIG. 1 is a diagram for explaining the extracorporeal circuit 1 according to the first embodiment. FIG. 1A is a schematic view of the extracorporeal circuit 1, and FIG. 1B is an enlarged view of a peripheral portion of the shunt cap set 50. FIG. FIG. 2 is a front view of the first shunt cap 100. FIG. 3 is a bottom view of the first shunt cap 100. FIG. 4 is a left side view of the first shunt cap 100. FIG. 5 is a right side view of the first shunt cap 100. FIG. 6 is an overall perspective view of the first shunt cap 100 as viewed from the front side. FIG. 7 is an overall perspective view of the first shunt cap as viewed from the back side. 8 is a cross-sectional view taken along line AA in FIG. FIG. 9 is a partially enlarged view of the engaging portion 130 shown in FIG. FIG. 10 is an enlarged view of a cross section taken along line BB in FIG. FIG. 11 is an overall perspective view of the second shunt cap 200. FIG. 12 is a front view of the second shunt cap 200. FIG. 13 is a right side view of the second shunt cap 200. 14 is a cross-sectional view taken along the line CC of FIG. 15 is a partially enlarged view of the engaged portion 230 shown in FIG. FIG. 16 is a view for explaining a connection method and a connection release method between the first shunt cap 100 and the second shunt cap 200. FIG. 16A is a perspective view showing a state before the first shunt cap 100 and the second shunt cap 200 are connected, and FIG. 16B is a diagram showing the first opening 120 and the second opening 220 connected to each other. It is a perspective view which shows a mode when it is made to fit, and FIG.16 (c) is a perspective view which shows a mode when the engaging part 130 is engaged with the to-be-engaged part 230 further. FIG. 17 is a view for explaining a connection method and a connection release method between the first shunt cap 100 and the second shunt cap 200. 17A is a plan view showing a state before the first shunt cap 100 and the second shunt cap 200 are connected, and FIG. 17B is a diagram showing the first opening 120 and the second opening 220. FIG. 17 (c) is a diagram showing in plan a state when the engaging portion 130 is further engaged with the engaged portion 230. FIG. is there. FIG. 18 is a front view of the first shunt cap 300. FIG. 19 is a bottom view of the first shunt cap 300. FIG. 20 is a left side view of the first shunt cap 100. FIG. 21 is a view for explaining the first shunt cap 100. FIG. 21A is a cross-sectional view taken along the line DD in FIG. 18, and FIG. 21B is an enlarged view of the peripheral portion of the engaging portion 330 in FIG. FIG. 22 is a front view of the second shunt cap 400. FIG. 23 is a right side view of the second shunt cap 400. 24 is a cross-sectional view taken along line EE in FIG. FIG. 25 is a view for explaining a connection method and a connection release method between the first shunt cap 300 and the second shunt cap 400. FIG. 25A shows a state before the first shunt cap 300 and the second shunt cap 400 are connected, and FIG. 25B shows the connection between the first shunt cap 300 and the second shunt cap 400. FIG. 25C is a diagram showing a state when the engagement state between the engagement portion 330 and the engaged portion 430 is released, and FIG. It is a figure which shows the mode after cancelling | releasing connection of the 1 shunt cap 300 and the 2nd shunt cap 400. FIG.

  Hereinafter, a shunt cap set and an extracorporeal circuit according to the present invention will be described based on the embodiments shown in the drawings.

[First Embodiment]
First, the configuration of the extracorporeal circuit 1 according to the first embodiment will be described with reference to FIG.
FIG. 1 is a diagram for explaining the extracorporeal circuit 1 according to the first embodiment. FIG. 1A is a schematic view of the extracorporeal circuit 1, and FIG. 1B is an enlarged view of a peripheral portion of the shunt cap set 50. FIG.

  The extracorporeal circuit 1 according to the first embodiment is an extracorporeal circuit for hemodialysis. As shown in FIG. 1A, a blood treatment device (also referred to as a dialyzer) 10, an arterial circuit 20, The vein side circuit 30 and the shunt cap set 50 for connecting the artery side circuit 20 and the vein side circuit 30 are provided. The blood processor 10 is, for example, a hollow fiber blood processor. The arterial circuit 20 is connected to one end of the blood processor 10, and the venous circuit 30 is connected to the other end of the blood processor 10.

  As shown in FIGS. 1A and 1B, the arterial circuit 20 includes tubes 21 to 23, a drip chamber 24 disposed between the tubes 21 and 22, and the tubes 22 and 23. A rolling tube 25, a connector member 26 connected to the end of the tube 23, and a fixture (also referred to as a lock nut) 27 attached to the end of the tube 23. The tube 23 is connected to a saline feed line 41 for introducing physiological saline as a priming solution into the circuit and a heparin line 42 for introducing heparin solution into the circuit. A monitor line 43 is connected to the drip chamber 24.

  The connector member 26 is a tubular member that connects the tube 23 and the first shunt cap 100, although not illustrated. The fixing device 27 is a tubular member that fixes the connection between the tube 23 and the first shunt cap 100, and a helical protrusion is provided inside the fixing device 27, although not illustrated.

  As shown in FIG. 1A and FIG. 1B, the venous circuit 30 includes tubes 31 and 32, a drip chamber 33 disposed between the tubes 31 and 32, and an end of the tube 32. And a fixing member 35 attached to the end of the tube 32. The drip chamber 33 is connected to a waste liquid line 44 for discharging excess physiological saline during the priming process and a monitor line 45.

  The connector member 34 is a tubular member that connects the tube 32 and the second shunt cap 200, although not illustrated. The fixture 35 is a tubular member that fixes the connection between the tube 32 and the second shunt cap 200, and a spiral projection is provided inside the fixture 35, although the description by illustration is omitted.

  The shunt cap set 50 is used for the priming process, and includes a first shunt cap 100 and a second shunt cap 200 as shown in FIG. The first shunt cap 100 is connected to the connector member 26 of the artery side circuit 20, and the second shunt cap 200 is connected to the connector member 34 of the vein side circuit 30.

Next, the configuration of the first shunt cap 100 will be described with reference to FIGS.
FIG. 2 is a front view of the first shunt cap 100. FIG. 3 is a bottom view of the first shunt cap 100. FIG. 4 is a left side view of the first shunt cap 100. FIG. 5 is a right side view of the first shunt cap 100. FIG. 6 is an overall perspective view of the first shunt cap 100 as viewed from the front side. FIG. 7 is an overall perspective view of the first shunt cap as viewed from the back side. 8 is a cross-sectional view taken along line AA in FIG. FIG. 9 is a partially enlarged view of the engaging portion 130 shown in FIG. In FIG. 9, only the engaging portion 130 is shown by a solid line, and members other than the engaging portion 130 are shown by a broken line. FIG. 10 is an enlarged view of a cross section taken along line BB in FIG.

  As shown in FIGS. 2 to 7, the first shunt cap 100 includes a first main body 110, a first opening 120 disposed at one end of the first main body 110, and the vicinity of the first opening 120. Two engaging portions 130, a first plug portion 140 that closes the first opening 120, a first connecting portion 150 that connects the first main body portion 110 and the first plug portion 140, and a first And a first connector connecting portion 160 disposed at the other end of the main body portion 110.

  As shown in FIGS. 4 to 7, the first main body part 110 includes a first pipe part 112, a first flange part 114 provided at a position near the first opening part 120 in the first pipe part 112, And a ring-shaped first ring portion 116 provided on a side surface of the one pipe portion 112. The 1st pipe part 112 is a cylindrical tubular member, for example, and is comprised so that the inside of a pipe | tube may become a flow path (internal flow path) (refer FIG. 8). As shown in FIG. 2, the first collar portion 114 has a substantially circular shape when viewed from the front. As shown in FIGS. 4 and 5, the first ring portion 116 is provided with a circular hole of a predetermined size.

  The first opening 120 has a first straight portion 122 located on the first flange 114 side and a first taper portion 124 adjacent to the first straight portion 122. The first opening 120 is provided with a hole 126 that communicates with the internal flow path of the first pipe portion 112 (see FIG. 8). The outer surface of the first straight portion 122 has a straight shape. The outer surface of the first taper portion 124 has a taper shape such that the outer diameter dimension decreases from the first straight portion 122 side toward the hole 126. The outer diameter of the first straight portion 122 is set larger than the maximum outer diameter of the first tapered portion 124, and the boundary portion between the first straight portion 122 and the first tapered portion 124 is stepped. Yes.

  As shown in FIG. 9, each of the two engaging portions 130 includes an extending portion 132 that extends toward the first opening 120 along the tube axis 110ax of the first main body portion 110, and a distal end portion of the extending portion 132. And a projecting portion 134 provided on the surface. When the first shunt cap 100 is viewed from the front, the two engaging portions 130 are arranged at an arrangement interval of 180 degrees around the hole 126 as shown in FIG. When the first shunt cap 100 is viewed from the front, in the engaging portion 130 located on the right side of the hole 126, the protruding portion 134 protrudes vertically upward (see FIG. 5), and the left side of the hole 126. In the engaging part 130 located at, the protruding part 134 protrudes vertically downward (see FIG. 4).

  As shown in FIG. 4 to FIG. 7 and FIG. 10, the first plug portion 140 includes a cylindrical first fitting concave portion 142 and a first fitting convex portion provided at the center of the first fitting concave portion 142. 144. The first plug portion 140 is configured so that the first taper portion 124 of the first opening 120 can be fitted into a gap formed by the first fitting concave portion 142 and the first fitting convex portion 144. When the first stopper 140 is fitted to the first taper portion 124, the engaging portion 130 is not located in the first fitting recess 142 but outside the first fitting recess 142.

  The first connecting portion 150 has a predetermined flexibility. A part of the first connecting part 150 is provided with a first bent part 152 configured to be bent. As shown in FIGS. 3 and 7, the first bent portion 152 is provided with a notch having a predetermined depth.

  As shown in FIGS. 4 to 7, the first connector connecting portion 160 has a first screwing portion 162 formed of a spiral protrusion. Further, the first connector connecting portion 160 is provided with a hole 164 that communicates with the internal flow path of the first pipe portion 112. The connector member 26 shown in FIG. 1 can be connected to the hole 164 of the first connector connecting portion 160. When the fixing member 27 is screwed into the first screwing portion 162 in a state where the connector member 26 is connected to the hole 164, the inner protrusion of the fixing device 27 meshes with the first screwing portion 162, so that the fixing tool 27 is engaged. It will be stopped.

  Each member constituting the first shunt cap 100 is integrally formed by a mold. As a material constituting the first shunt cap 100, for example, polypropylene is used.

Next, the configuration of the second shunt cap 200 will be described with reference to FIGS.
FIG. 11 is an overall perspective view of the second shunt cap 200. FIG. 12 is a front view of the second shunt cap 200. FIG. 13 is a right side view of the second shunt cap 200. 14 is a cross-sectional view taken along the line CC of FIG. 15 is a partially enlarged view of the engaged portion 230 shown in FIG. In FIG. 15, only the engaged portion 230 is shown by a solid line, and members other than the engaged portion 230 are shown by a broken line.

  As shown in FIGS. 11 to 13, the second shunt cap 200 includes a second main body 210, a second opening 220 disposed at one end of the second main body 210, and the vicinity of the second opening 220. Two engaged portions 230 disposed on the second opening portion 220, a second plug portion 240 that closes the second opening 220, a second connecting portion 250 that connects the second main body portion 210 and the second plug portion 240, 2 with a second connector connecting portion 260 disposed at the other end of the main body portion 210.

  The second main body part 210 includes a second pipe part 212, a second flange part 214 provided at the position of the second opening 220 in the second pipe part 212, and a ring provided on a side surface of the second pipe part 212. Second ring portion 216. The second pipe portion 212 is, for example, a cylindrical tubular member, and is configured such that the inside of the pipe becomes a flow path (internal flow path) (see FIG. 14). As shown in FIG. 12, the second collar 214 has a substantially circular shape when viewed from the front. As shown in FIG. 13, the second ring portion 216 is provided with a circular hole of a predetermined size.

  As shown in FIG. 14, the second opening 220 has a second straight portion 222 located on the second flange portion 214 side, and a second tapered portion 224 adjacent to the second straight portion 222. The second opening 220 is provided with a hole 226 that communicates with the internal flow path of the second pipe portion 212. The second straight part 222 has a straight inner surface. The inner surface of the second taper portion 224 has a taper shape such that the inner diameter dimension decreases from the hole 226 side toward the second connector connection portion 260 side. The inner shape and inner diameter of the second straight part 222 and the second taper part 224 are such that the first opening 120 of the first shunt cap 100 and the second opening 220 of the second shunt cap 200 are fitted. The first shunt cap 100 is set to have a shape and size corresponding to the outer surface shape and outer diameter size of the first straight portion 122 and the first taper portion 124. Accordingly, the second opening 220 can be fitted to the first opening 120.

  As shown in FIG. 15, each of the two engaged portions 230 has a cutout portion 232 provided in the second flange portion 214. The two notches 232 are arranged at an arrangement interval of 180 degrees around the hole 226 when the second shunt cap 200 is viewed from the front.

The notch width W3 of the notch 232 is set to a value larger than the sum of the width W1 of the extension 132 and the protrusion length L2 of the protrusion 134 (ie, “W3> (W1 + L2)”) (FIG. 9 and FIG. 15).
The “width W1 of the extended portion 132” has the same meaning as the length of the extended portion 132 in the direction perpendicular to the tube axis 110ax (the length of the extended portion 132 in the span direction). The “projection length L2 of the protrusion 134” is synonymous with the length of the protrusion 134 in the direction orthogonal to the tube axis 110ax.

  As shown in FIG. 11, the second plug portion 240 includes a cylindrical second fitting concave portion 242 and a second fitting convex portion 244 provided at the center of the second fitting concave portion 242. The second plug portion 240 is configured so that the second flange portion 214 and the second opening 220 can be fitted into a gap formed by the second fitting recess 242 and the second fitting protrusion 244. In addition, when the 2nd stopper part 240 is fitted to the 2nd collar part 214, the 2nd fitting convex part 244 is in the area | region of the inner surface side of the 2nd opening part 220 (the 2nd straight part 222 and the 2nd taper part 224). Will be located.

  The second connecting part 250 has a predetermined flexibility. In addition, a part of the second connecting portion 250 is provided with a second bent portion 252 configured to be bendable. As shown in FIG. 11, the second bent portion 252 is provided with a notch having a predetermined depth.

  As shown in FIGS. 11, 13, and 14, the second connector connection portion 260 includes a second screwing portion 262 formed of a spiral protrusion. The second connector connecting portion 260 is provided with a hole 264 that communicates with the internal flow path of the second pipe portion 212. The connector member 34 shown in FIG. 1 can be connected to the hole 264 of the second connector connection portion 260. When the fixing member 35 is screwed into the second screwing portion 262 in a state where the connector member 34 is connected to the hole 264, the inner protrusion of the fixing device 35 is engaged with the second screwing portion 262, so that the fixing tool 35 is engaged. It will be stopped.

  Each member constituting the second shunt cap 200 is integrally formed by a mold. As a material constituting the second shunt cap 200, for example, polypropylene is used.

Next, a connection method and a connection release method between the first shunt cap 100 and the second shunt cap 200 will be described with reference to FIGS. 16 and 17.
FIGS. 16 and 17 are diagrams for explaining a connection method and a connection release method between the first shunt cap 100 and the second shunt cap 200. 16A and 17A show a state before the first shunt cap 100 and the second shunt cap 200 are connected, and FIGS. 16B and 17B show the first shunt cap 100 and the second shunt cap 200, respectively. The state when the first opening 120 and the second opening 220 are fitted to each other is illustrated. FIGS. 16C and 17C further relate the engaging portion 130 to the engaged portion 230. The situation when combined is shown. 16 (a) to 16 (c) show the first shunt cap 100 and the second shunt cap 200 in perspective views, and FIGS. 17 (a) to 17 (c) show the first shunt cap 100. The second shunt cap 200 is shown in a direction perpendicular to the tube axes 110ax and 210ax.

  In order to connect the first shunt cap 100 and the second shunt cap 200, first, as shown in FIGS. 16A and 17A, the first opening 120 and the second opening 220 are opposed to each other. In this state, the first shunt cap 100 and the second shunt cap 200 are arranged so that the positions of the engaging portion 130 and the engaged portion 230 correspond to each other and the tube axes 110ax and 210ax coincide with each other. At this time, since the first opening 120 and the second opening 220 are configured to be fitted to each other, as shown in FIGS. 16B and 17B, the first opening 120 and the second opening 220 are formed. By fitting the two openings 220, the first shunt cap 100 and the second shunt cap 200 can be connected.

  The first shunt cap 100 and the second shunt cap 200 can be engaged with the engaged portion 230 by the engaging portion 130 in a state where the first opening 120 and the second opening 220 are fitted. It is configured. Therefore, by rotating the first shunt cap 100 or the second shunt cap 200 along the direction of the arrow P1 shown in FIGS. 16B and 17B, FIGS. As shown in c), the engaging portion 130 can be engaged with the engaged portion 230. As a result, the first shunt cap 100 and the second shunt cap 200 can be reliably connected.

  In addition, when engaging the engaging part 130 with the to-be-engaged part 230, either one of the 1st shunt cap 100 and the 2nd shunt cap 200 is shown in FIG.16 (b) and FIG.17 (b). You may rotate along the arrow P1 direction, and you may rotate both the 1st shunt cap 100 and the 2nd shunt cap 200 along the arrow P1 direction.

  On the other hand, when the connection between the first shunt cap 100 and the second shunt cap 200 is released, the first shunt cap 100 and the second shunt cap 200 are engaged with each other between the engagement portion 130 and the engaged portion 230. Since the connection state between the first opening 120 and the second opening 220 can be released only when the engagement is released, first, the engagement state between the engagement portion 130 and the engaged portion 230 is changed. To release. Specifically, when the first shunt cap 100 or the second shunt cap 200 is rotated along the direction of the arrow P2 shown in FIGS. 16C and 17C, the engagement portion 130 and the engaged portion 130 are engaged. The engagement state with the portion 230 is released. Then, by separating the first shunt cap 100 and the second shunt cap 200, the first opening 120 is detached from the second opening 220, and the connection state between the first shunt cap 100 and the second shunt cap 200 is released. Is done.

  As can be seen from the above, the engaging portion 130 and the engaged portion 230 are formed by rotating the first shunt cap 100 about the tube shaft 110ax of the first main body 110 (or the tube shaft 210ax). By rotating the second shunt cap 200 as a central axis), the two shunt caps 200 can be engaged with each other and can be released from each other.

  Further, as is apparent from FIG. 16C, the protrusion 134 of the engaging portion 130 is rotated by the first shunt cap 100 when the engagement state between the engaging portion 130 and the engaged portion 230 is released. It protrudes in the direction opposite to the moving direction (arrow P2 direction).

  According to the shunt cap set 50 according to the first embodiment configured as described above, the engaging portion 130 and the engaged portion 230 are provided because the engaging portion 130 and the engaged portion 230 are provided. Unless the engagement state is released, the connection state between the first shunt cap 100 and the second shunt cap 200 can be maintained. That is, it is possible to prevent the connection state between the shunt caps from being released unexpectedly.

  In addition, according to the shunt cap set 50 according to the first embodiment, the first shunt cap 100 and the second shunt cap 200 can be separated as long as the engagement state between the engagement portion 130 and the engaged portion 230 is released. Since the connection state can be released, the connection release operation between the shunt caps does not become complicated.

  In the shunt cap set 50 according to the first embodiment, the engaging portion 130 is provided in the vicinity of the first opening 120, and the engaged portion 230 is provided in the vicinity of the second opening 220. Yes. As a result, the positional relationship between the first opening 120 and the second opening 220, the engaging portion 130, and the engaged portion 230 is relatively close, and the shunt cap set is compact as a whole.

  In the shunt cap set 50 according to the first embodiment, the engaging portion 130 and the engaged portion 230 rotate the first shunt cap 100 about the tube shaft 110ax of the first main body 110 as a central axis. The engagement state of each other can be released. Thereby, it is possible to connect the shunt caps with each other and release the connection with a relatively simple operation.

  In the shunt cap set 50 according to the first embodiment, the engaging portion 130 has the above-described extending portion 132 and the protruding portion 134, and the engaged portion 230 is configured by the above-described notch portion 232. Further, the protrusion 134 is relative to the direction of rotation of the first shunt cap 100 (the direction of the arrow P2 shown in FIG. 16C) when releasing the engaged state between the engaging portion 130 and the engaged portion 230. Projecting in the opposite direction. As a result, a shunt cap set that can connect and disconnect the shunt caps with a simple operation, while preventing the connection state between the shunt caps from being released unexpectedly, is relatively easy. It can be realized.

  Further, in the shunt cap set 50 according to the first embodiment, when the first shunt cap 100 and the second shunt cap 200 are connected, the engaging portion 130 and the engaged portion 230 are engaged, The rotational position of the first shunt cap 100 or the second shunt cap 200 around the tube axes 110ax, 210ax can be held at a desired position. As a result, it is possible to suppress twisting of the tube connected to the first shunt cap 100 or the second shunt cap 200 and undesirable interference (contact) between the plug portions or the connecting portions after connection.

  In the shunt cap set 50 according to the first embodiment, the notch width W3 of the notch 232 is set to a value larger than the sum of the width W1 of the extension 132 and the protrusion length L2 of the protrusion 134. Yes. Thereby, it becomes possible to fit shunt caps smoothly.

  In the shunt cap set 50 according to the first embodiment, the first shunt cap 100 includes a first ring portion 116, and the second shunt cap 200 includes a second ring portion 216. Thereby, for example, after the priming process is completed, the first ring part 116 or the second ring part 216 can be hooked on the hook of the hanger for hanging the medical solution bag filled with physiological saline or the like. It becomes possible to suspend the shunt cap 100 or the second shunt cap 200 on the hanger.

  According to the extracorporeal circuit 1 according to the first embodiment, since the above-described excellent shunt cap set 50 is provided, an extracorporeal circuit that can prevent the connection state between the shunt caps from being released unexpectedly. Become.

[Second Embodiment]
Similar to the shunt cap set 50 according to the first embodiment, the shunt cap set 52 according to the second embodiment is used for priming the extracorporeal circulation circuit for hemodialysis, and includes the first shunt cap 300. And a second shunt cap 400. Hereinafter, the configuration of the first shunt cap 300 and the second shunt cap 400 will be described in detail with reference to the drawings.

First, the configuration of the first shunt cap 300 will be described with reference to FIGS.
FIG. 18 is a front view of the first shunt cap 300. FIG. 19 is a bottom view of the first shunt cap 300. FIG. 20 is a left side view of the first shunt cap 300. FIG. 21 is a view for explaining the first shunt cap 300. FIG. 21A is a cross-sectional view taken along the line DD in FIG. 18, and FIG. 21B is an enlarged view of the peripheral portion of the engaging portion 330 in FIG.

  As shown in FIGS. 18 to 20, the first shunt cap 300 includes a first main body 310, a first opening 320 disposed at one end of the first main body 310, and the vicinity of the first opening 320. The first engaging portion 330, the first plug portion 340 that closes the first opening 320, the first connecting portion 350 that connects the first main body portion 310 and the first plug portion 340, and the first A first connector connecting portion 360 disposed at the other end of the main body portion 310.

  The first shunt cap 300 basically has the same configuration as the first shunt cap 100 described in the first embodiment, but the configuration of the first main body portion 310 and the engaging portion 330 is the same as that of the first shunt cap 100. It is different from the case of.

  That is, the first main body portion 310 includes the first tube portion 312 and the first ring portion 316 provided on the side surface of the first tube portion 312, but the first rod described in the first embodiment. It does not have a part corresponding to the part. The configurations and functions of the first pipe portion 312 and the first ring portion 316 are the same as those described in the first embodiment, and thus detailed description thereof is omitted.

  As shown in FIGS. 21A and 21B, the engaging portion 330 includes an extension portion 332 that extends toward the first opening 320 along the tube axis 310 ax of the first main body portion 310, and a first portion. It is located between the pressing portion 336 extending to the opposite side (first connector connecting portion 360 side) from the first opening 320 along the tube axis 310ax of the main body portion 310, and between the extending portion 332 and the pressing portion 336. It has the support part 338 which supports the protrusion part 332 and the press part 336, and the projection part 334 provided in the front-end | tip part of the extension part 332. FIG. Further, the engaging portions 330 are arranged at an arrangement interval of 180 degrees around the hole 326 when the first shunt cap 300 is viewed from the front (see FIG. 18). The protruding portion 334 protrudes from the outer surface side of the first main body portion 310 toward the inner surface side.

  Although the details will be described later, the extension portion 332 is applied to the pressing portion 336 from the inner surface side of the first main body portion 310 to the outer surface side when an external force directed from the outer surface side of the first main body portion 310 toward the inner surface side is applied. It is comprised so that it may displace toward.

  Since the configurations and functions of the first opening 320, the first stopper 340, the first connecting portion 350, and the first connector connecting portion 360 are the same as those described in the first embodiment, detailed description thereof is omitted. To do.

Next, the configuration of the second shunt cap 400 will be described with reference to FIGS.
FIG. 22 is a front view of the second shunt cap 400. FIG. 23 is a right side view of the second shunt cap 400. 24 is a cross-sectional view taken along line EE in FIG.

  22 to 24, the second shunt cap 400 includes a second main body 410, a second opening 420 disposed at one end of the second main body 410, and the vicinity of the second opening 420. A second plug portion 440 that closes the second opening 420, a second connecting portion 450 that connects the second main body portion 410 and the second plug portion 440, and a second main body. And a second connector connecting part 460 disposed at the other end of the part 410.

  The second shunt cap 400 basically has the same configuration as the second shunt cap 200 described in the first embodiment, but the configuration of the second main body 410 and the engaged portion 430 is the second shunt cap. It is different from the case of 200.

  That is, the second main body 410 has the second pipe part 412 and the second ring part 416 provided on the side surface of the second pipe part 412, but the second rod described in the first embodiment. It does not have a part corresponding to the part. Since the configurations and functions of the second pipe portion 412 and the second ring portion 416 are the same as those described in the first embodiment, a detailed description thereof will be omitted.

  As shown in FIGS. 23 and 24, the engaged portion 430 is a receiver provided at a boundary portion (a step portion) between the second straight portion 422 and the second taper portion 424 in the second opening 420. Part 432. The receiving portion 432 is disposed over the entire circumference at the above-described boundary portion with the tube axis 410ax of the second main body portion 410 as the central axis.

  Since the configurations and functions of the second opening 420, the second plug 440, the second coupling portion 450, and the second connector connection portion 460 are the same as those described in the first embodiment, detailed description thereof is omitted. To do.

Next, a connection method and a connection release method between the first shunt cap 300 and the second shunt cap 400 will be described with reference to FIG.
FIG. 25 is a view for explaining a connection method and a connection release method between the first shunt cap 300 and the second shunt cap 400. FIG. 25A shows a state before the first shunt cap 300 and the second shunt cap 400 are connected, and FIG. 25B shows the connection between the first shunt cap 300 and the second shunt cap 400. 25 (c) is a diagram illustrating a state when the engagement state between the engagement portion 330 and the engaged portion 430 is released, and FIG. 25 (d) is a diagram illustrating the state when the engagement portion 330 is engaged. It is a figure which shows the mode after cancelling | releasing connection of the 1 shunt cap 300 and the 2nd shunt cap 400. FIG. 25 (a) to 25 (d), in order to facilitate understanding of the invention, a sectional view of the first shunt cap 300 shown in FIG. 21 (a) and a second shunt cap 400 shown in FIG. It is illustrated based on the cross-sectional view.

  In order to connect the first shunt cap 300 and the second shunt cap 400, first, as shown in FIG. 25A, the tube axis is set with the first opening 320 and the second opening 420 facing each other. The first shunt cap 300 and the second shunt cap 400 are arranged so that 310ax and 410ax coincide. At this time, since the first opening 320 and the second opening 420 are configured to be fitted to each other, the first shunt cap 300 is formed by fitting the first opening 320 and the second opening 420. And the second shunt cap 400 can be connected.

  The first shunt cap 300 and the second shunt cap 400 can be engaged with the engaged portion 430 by the engaging portion 330 in a state where the first opening 320 and the second opening 420 are fitted. It is configured. Therefore, by pushing the first shunt cap 300 into the second shunt cap 400, the engaging portion 330 can be engaged with the engaged portion 430 as shown in FIG. As a result, the first shunt cap 300 and the second shunt cap 400 can be reliably connected.

  On the other hand, when the connection of the first shunt cap 300 and the second shunt cap 400 is released, the first shunt cap 300 and the second shunt cap 400 are engaged with each other between the engaging portion 330 and the engaged portion 430. Since the connection state between the first opening 320 and the second opening 420 can be released only when the engagement is released, first, the engagement state between the engagement portion 330 and the engaged portion 430 is changed. To release. Specifically, when an external force is applied to the pressing portion 336 in the direction of the arrow Q1 shown in FIG. 25 (b) (the direction from the outer surface side to the inner surface side of the first main body portion 310), the extending portion 332 is shown in FIG. The projection 334 is displaced in the direction of the arrow Q2 shown in (c) (the direction from the inner surface side to the outer surface side of the first main body portion 310) and is received by the protruding portion 334 and the engaged portion 430. The engaged state with the part 432 is released. Then, by separating the first shunt cap 300 and the second shunt cap 400, the first opening 320 is detached from the second opening 420, and the connection state between the first shunt cap 300 and the second shunt cap 400 is released. (See FIG. 25 (d)).

  According to the shunt cap set 52 according to the second embodiment configured as described above, since the engaging portion 330 and the engaged portion 430 are provided, the engaging portion 330 and the engaged portion 430 are provided. Unless the engagement state is released, the connection state between the first shunt cap 300 and the second shunt cap 400 can be maintained. That is, it is possible to prevent the connection state between the shunt caps from being released unexpectedly.

  In addition, according to the shunt cap set 52 according to the second embodiment, the first shunt cap 300 and the second shunt cap 400 are only required to release the engaged state between the engaging portion 330 and the engaged portion 430. Since the connection state can be released, the connection release operation between the shunt caps does not become complicated.

  In the shunt cap set 52 according to the second embodiment, the engaging portion 330 and the engaged portion 430 are part of the engaging portion 330 (pressing from the outer surface side of the first main body portion 310 toward the inner surface side. By applying an external force to the portion 336), the engaged state can be released. Thereby, it is possible to connect the shunt caps with each other and release the connection with a relatively simple operation.

  In the shunt cap set 52 according to the second embodiment, the engaging portion 330 has the extending portion 332, the pressing portion 336, the supporting portion 338, and the protruding portion 334, and the engaged portion 430 is the receiving portion described above. 432. In addition, the protruding portion 334 protrudes from the outer surface side of the first main body portion 310 toward the inner surface side. Furthermore, the extension part 332 is displaced toward the outer surface side from the inner surface side of the first main body portion 310 when an external force is applied to the pressing portion 336 from the outer surface side of the first main body portion 310 toward the inner surface side. It is configured as follows. As a result, a shunt cap set that can connect and disconnect the shunt caps with a simple operation, while preventing the connection state between the shunt caps from being released unexpectedly, is relatively easy. It can be realized.

  The shunt cap set 52 according to the second embodiment is different from the shunt cap set 50 according to the first embodiment in that the configuration of the engaging portion and the engaged portion and the first and second flange portions are not provided. However, in other respects, since it has the same configuration as the shunt cap set 50 according to the first embodiment, it has the corresponding effect as it is among the effects of the shunt cap set 50 according to the first embodiment.

  As mentioned above, although the shunt cap set and extracorporeal circuit according to the present invention have been described based on the above-described embodiment, the present invention is not limited to the above-described embodiment, and in various aspects without departing from the gist thereof. For example, the following modifications are possible.

(1) In each of the above embodiments, the case where the first shunt cap is provided with two locking portions has been described as an example, but the present invention is not limited to this, and the locking portion is not limited to this. One or three or more may be provided. When the number of the locking portions provided on the first shunt cap is one, the number of the locked portions provided on the second shunt cap may be one or plural. Also good. Further, the relationship between the number of the locking portions provided in the first shunt cap and the number of the locked portions provided in the second shunt cap is not necessarily limited to the case where the number is the same. The number of the engaging parts and the engaged parts may be different, for example, four engaged parts are provided for one engaging part.

(2) In the first embodiment, as illustrated in FIG. 9, as an example of the shape of the engaging portion, a case where the extending portion 132 and the protruding portion 134 form a substantially L shape is illustrated. Although described, the present invention is not limited to this. For example, in FIG. 9, other protrusions are provided on the side opposite to the part where the protrusions 134 are provided (the lower side of the drawing in FIG. 9). Good. That is, you may provide the engaging part in which the other protrusion part which protrudes in the direction opposite to the protrusion direction of a protrusion part was provided in the front-end | tip part of the extension part.

(3) In the second embodiment, the tube axis 410ax of the second main body 410 at the boundary portion (the step portion) between the second straight portion 422 and the second taper portion 424 in the second opening 420. Although the case where the receiving portion 432 is arranged over the entire circumference with the center axis as an example has been described, the present invention is not limited to this. A portion corresponding to the receiving portion is disposed only at a position corresponding to the position where the engaging portion is provided (in the case of the second embodiment, at an arrangement interval of 180 degrees with the tube axis 410ax as the central axis). May be.

(4) In the above embodiments, the case where the first tube portion of the first main body portion and the second tube portion of the second main body portion are cylindrical tubular members has been described as an example. It is not limited to this, For example, a rectangular tube-shaped tubular member may be sufficient.

(5) In each of the above embodiments, the case where each member constituting the first shunt cap and the second shunt cap is integrally formed by a mold has been described, but the present invention is limited to this. It is not something. For example, after each member constituting the first shunt cap and the second shunt cap is individually created, the members may be joined.

(6) In each of the above embodiments, the case where polypropylene is used as the material constituting the first shunt cap and the second shunt cap has been described as an example, but the present invention is not limited to this. For example, other plastic materials such as polyethylene may be used. Further, the material is not limited to a plastic material, and for example, a metal material or the like may be used.

(7) The shunt cap set of the present invention is not limited to the extracorporeal circuit 1 including the arterial circuit 20 and the venous circuit 30 having the above-described circuit configuration, but includes an extracorporeal circuit member having a circuit member having a configuration different from the above configuration. It can be used for a circulation circuit. Further, the present invention is not limited to an extracorporeal circuit for hemodialysis, and can be used for an extracorporeal circuit used for other purposes (for example, an extracorporeal circuit for plasma separation or an extracorporeal circuit for artificial heart-lung machine).

DESCRIPTION OF SYMBOLS 1 Extracorporeal circuit 10 Blood processor 20 Arterial circuit 21-23, 31, 32 Tube 24, 33 Drip chamber 25 Rolling tube 26, 34 Connector member 27, 35 Fixture 30 Vein side circuit 41 Saline line 42 Heparin line 43, 45 Monitor line 44 Waste liquid line 50, 52 Shunt cap set 100, 300 First shunt cap 110, 310 First main body 110ax, 310ax Tube axis 112, 312 of first main body 114 First pipe 114 First flange 116, 316 1st ring part 120,320 1st opening part 122,322 1st straight part 124,324 1st taper part 126,164,326,364 (130 of 1st shunt cap) 130,330 Engagement part 132,332 Extension part 134,334 Protrusion part 140,340 1st Plug part 142 1st fitting recessed part 144 1st fitting convex part 150,350 1st connection part 152,352 1st bending part 160,360 1st connector connection part 162,362 1st screwing part 200,400 2nd Shunt caps 210 and 410 Second body portions 210ax and 410ax Tube shafts 212 and 412 of the second body portion Second tube portion 214 Second flange portions 216 and 416 Second ring portions 220 and 420 Second openings 222 and 422 Second Straight portion 224, 424 Second taper portion 226, 264, 426, 464 (second shunt cap) hole 230, 430 Engagement portion 232 Notch portion 240, 440 Second plug portion 242 Second fitting recess 244 First 2 fitting convex part 250,450 2nd connection part 252,452 2nd bending part 260,460 2nd connector connection part 262,462 2nd screwing part 336 press 338 support unit 432 receiving unit L2 cutout widths W3 notch the projecting length W1 protraction of the protrusion

Claims (8)

A tubular first main body (110), a first opening (120) provided in the first main body (110) and leading to an internal flow path of the first main body (110), and the first main body A first shunt cap (100) having an engagement portion (130) provided on (110);
A tubular second main body part (210), a second opening part (220) provided in the second main body part (210) and leading to an internal flow path of the second main body part (210), and the second main body part A second shunt cap (200) having an engaged portion (230) provided on (210),
The first opening (120) and the second opening (220) are configured to be fitted to each other,
The engaging part (130) is configured to be engageable with the engaged part (230) in a state where the first opening part (120) and the second opening part (220) are fitted. And
The first shunt cap (100) and the second shunt cap (200) can be used only when the engaged state between the engaging portion (130) and the engaged portion (230) is released. A shunt cap set (50) configured to be able to release a connection state between the opening (120) and the second opening (220). The shunt cap set according to claim 1,
The engaging portion (130) is provided in the vicinity of the first opening (120),
The engaged portion (230) is a shunt cap set (50) provided in the vicinity of the second opening (220). The shunt cap set according to claim 1 or 2,
The engaging portion (130) and the engaged portion (230) rotate the first shunt cap (100) around the tube axis (110ax) of the first main body portion (110). The shunt cap set (50) configured to be able to release the mutual engagement state. The shunt cap set according to claim 3,
The engagement portion (130) includes an extension portion (132) extending toward the first opening (120) along the tube axis (110ax) of the first main body portion (110), and the extension portion ( 132) and a protrusion (134) provided at the tip portion of
The engaged portion (230) is provided at a position corresponding to the engaging portion (130) when the first opening (120) and the second opening (220) are fitted. A notch (232)
The protrusion (134) is configured to rotate with respect to the rotation direction of the first shunt cap (100) when the engagement state between the engagement portion (130) and the engaged portion (230) is released. A shunt cap set (50) protruding in the opposite direction. The shunt cap set according to claim 4,
The notch width (W3) of the notch part (232) is set to a value larger than the sum of the width (W1) of the extension part (132) and the protrusion length (L2) of the protrusion part (134). Shunt cap set (50). The shunt cap set according to claim 1 or 2,
The engaging portion (330) and the engaged portion (430) apply an external force to a part of the engaging portion (330) from the outer surface side to the inner surface side of the first main body portion (310). A shunt cap set (52) configured to be disengaged from each other by being added. The shunt cap set according to claim 6,
The engagement portion (330) includes an extension portion (332) extending toward the first opening (320) along the tube axis (310ax) of the first body portion (310), and the first body portion. A pressing portion (336) extending on the opposite side of the first opening (320) along the tube axis (310ax) of (310), and between the extending portion (332) and the pressing portion (336) A support part (338) that is positioned and supports the extension part (332) and the pressing part (336), and a protrusion part (334) provided at a tip part of the extension part (332). ,
The engaged portion (430) is provided at a position corresponding to at least the engaging portion (330) when the first opening (320) and the second opening (420) are fitted. Having a received portion (432),
The protrusion (334) protrudes from the outer surface side of the first body portion (310) toward the inner surface side,
When the extension part (332) applies an external force from the outer surface side of the first main body part (310) to the inner surface side to the pressing part (336), the extension part (332) of the first main body part (310) A shunt cap set (52) configured to be displaced from the inner surface side toward the outer surface side. An arterial circuit (20);
A venous circuit (30);
A shunt cap set (50) for connecting the arterial circuit (20) and the venous circuit (30),
The extracorporeal circuit (1), wherein the shunt cap set (50) is the shunt cap set according to any one of claims 1 to 7.

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