JP7181107B2 - tube splicing equipment - Google Patents

Description

The present invention relates to a tube joining device.

As a technique for connecting resin tubes or the like, a bonding method is conventionally known in which the ends of resin tubes are fused, and the fused ends are pressed against each other and pressure-bonded. Such techniques are widely used in various industrial fields, and for example, attempts are being made to apply them to medical techniques such as peritoneal dialysis.

Peritoneal dialysis uses a tube (catheter) embedded in the patient's peritoneal cavity to inject a prescribed dialysate into the patient's body. It's a way to remove.

Since one of the tubes to be spliced is to be implanted in the abdominal cavity of the patient, great care must be taken during the splicing operation so as not to contaminate each tube. In Patent Document 1, when the lid of a tube joining device is opened and two tubes are set at predetermined positions, and the lid is closed and a button is pressed, the two tubes are fused and then fused. A technique is disclosed in which pressure bonding is performed after the ends that have been replaced are replaced.

JP 2013-146354 A

The device described in Patent Document 1 includes a main body that covers a portion that holds a tube when the lid is closed, an operation portion that is gripped by a user or the like when performing the closing operation and has an engaging claw, have The lid is attached to the housing of the tube joining device so as to be openable and closable via a first rotating shaft, and the operation part of the lid is attached to the main body of the lid via a second rotating shaft so as to be rotatable. It is Further, the housing side is provided with an engaged portion that can be engaged with the engaging claw of the lid portion.

The user brings the lid closer to the housing in order to close the lid. Then, at an angle where the cover approaches the housing to some extent, the operating portion provided with the engaging claw is rotated with respect to the main body to engage (hook) the engaging portion with the engaged portion.

Here, when the engaging claw is configured to be rotatable with respect to the main body of the lid portion, the user may unintentionally move the engaging claw toward the engaged portion even if the lid portion is relatively separated from the housing. may cause it to rotate in the direction of engagement with the In this case, even if the lid portion is brought close to the housing, the engaging claws cannot engage with the engaged portion and idling (or idling), so that the lid portion cannot be closed. When the engaging claws idle, the user needs to open the lid again and then close it again, which is not very good in workability.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a tube joining device capable of preventing the engaging claws of the lid from engaging with the engaged portion and idling.

In the present invention for achieving the above object, after the end of the first tube and the end of the second tube are fused, the fused end of the first tube and the fused end of the second tube are exchanged and joined. The tube joining device has a pedestal provided with a holding portion for holding the first tube and the second tube, and a lid portion installed to be openable and closable with respect to the pedestal, wherein the pedestal is , an engaged portion engageable with the lid portion, wherein the lid portion includes a body portion capable of surrounding the holding portion; a shaft, an engaging pawl provided rotatably with respect to the main body and capable of engaging with the engaged portion of the base, and supporting the engaging pawl so as to be rotatable with respect to the main body and a second rotating shaft provided on the lid portion for urging the engaging claw in a second rotating direction opposite to the first rotating direction in which the engaging claw engages the engaged portion. Equipped with sebu and. The force with which the biasing portion biases the engaging claw in the second rotation direction is greater than the force required to close the lid, and the lid is rotatable about the second rotation shaft. provided with a grip portion that can be gripped or abutted by a user's fingers.

According to the tube joining device of the present invention, unless the user applies a force that resists the force of the biasing portion, the engaging claw is prevented from rotating in the first rotation direction by biasing the biasing portion. be. Therefore, the engaging claw is prevented from unintentionally rotating in the first rotation direction at a position where the lid is relatively far from the pedestal, thereby preventing the engaging claw from idling without engaging with the engaged portion. can be suppressed.

1 is a schematic perspective view showing a state in which a lid is opened in a tube joining device according to an embodiment of the present invention; FIG. FIG. 4 is a schematic perspective view showing a state in which the cover of the tube joining device is closed; FIG. 3 is a schematic perspective view showing an arrangement example of components arranged in a housing in a state where the cover of the tube joining device is closed; FIG. 4 is a schematic plan view showing a state in which the cover of the tube joining device is opened; 5 is a schematic plan view showing a state in which a first tube and a second tube are arranged in the tube joining device shown in FIG. 4; FIG. FIG. 3 is a perspective view showing a clamping part that constitutes the tube joining device; FIG. 11 is a side view illustrating how an engaging claw forming the lid engages with an engaged portion on the housing side; FIG. 11 is a side view illustrating how an engaging claw forming the lid engages with an engaged portion on the housing side; FIG. 10 is a side view showing a state in which an engaging claw that constitutes the lid portion is engaged with an engaged portion on the housing side; FIG. 11 is a side view showing a case where the engaging claws forming the lid do not engage with the engaged portion on the housing side and are idling. 3 is a perspective view showing a grip portion, an engaging claw, a second rotating shaft, and an urging portion that constitute the lid portion; FIG. FIG. 6 is a cross-sectional view taken along line 12-12 of FIG. 5 showing the tube joining device with the lid open. FIG. 6 is a cross-sectional view taken along line 12-12 of FIG. 5 showing the tube joining device with the lid closed; It is a block diagram which shows the control system of a tube joining apparatus. FIG. 4 is a diagram schematically showing a first tube and a second tube to be fused and joined by a tube joining device; FIG. 5 is a diagram schematically showing each step of fusing and position exchange work by the tube joining device. FIG. 5 is a diagram schematically showing each step of fusing and position exchange work by the tube joining device. FIG. 5 is a diagram schematically showing each step of fusing and position exchange work by the tube joining device. FIG. 5 is a diagram schematically showing each step of fusing and position exchange work by the tube joining device. FIG. 4 is a diagram schematically showing each process of joining and removing work by the tube joining device. FIG. 4 is a diagram schematically showing each process of joining and removing work by the tube joining device.

Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. 1 to 13 are diagrams for explaining the overall configuration of a tube joining device 1 according to one embodiment of the present invention. FIG. 14 is a diagram for explaining the control system of the tube joining device 1. As shown in FIG. FIG. 15 is a diagram for explaining the tubes T1 and T2 joined by the tube joining apparatus 1. FIG. 16 to 21 are diagrams for explaining usage examples of the tube joining device 1. FIG. In this specification, the tube T1 corresponds to the first tube, and the tube T2 corresponds to the second tube. In the following description, the front-rear direction of the tube joining apparatus 1 will be referred to as the front-rear direction X, the left-right direction as the left-right direction Y, and the height direction as the height direction Z.

As shown in FIG. 15, the tube connecting device 1 in this embodiment includes the end of the tube T1 on the peritoneal dialysate bag T11 side and the end of the tube T2 on the peritoneal catheter T26 side of the patient (user M) who undergoes peritoneal dialysis. It is configured as a medical device that fuses and joins parts.

As shown in FIG. 1, the tube joining set S includes a tube joining apparatus 1 capable of fusing and joining tubes T1 and T2, and a cassette WC having a plurality of wafers WF used for fusing. As shown in FIGS. 16 to 18, tubes T1 and T2 placed side by side are crushed by being pressed against each other, and tubes T1 and T2 are melted and cut by heated wafer WF. After that, as shown in FIGS. 19 and 20, the positions of one side of the fused tube T1 and one side of the tube T2 are exchanged, and the tubes T1 and T2 are pressurized and joined. Details will be described later.

The tube joining device 1 will be outlined with reference to FIG. and a clamping part 20 for exchanging one side of T2. As shown in FIG. 14, the tube joining device 1 has an interlock 30 that locks the tubes T1 and T2 in a state in which the tubes T1 and T2 are sandwiched by the clamping portion 20 during fusing and joining, and inserts into the housing 10 as shown in FIG. and a storage unit 40 for storing the cassette WC.

As shown in FIG. 14, the tube joining apparatus 1 includes a sending unit 50 that heats the wafer WF and sends it to a cutting position, an operation unit 60 that can receive instructions such as switching between ON and OFF of the power supply, and a user M and a notification unit 70 for notifying necessary information. The tube joining device 1 has a supply section 80 capable of supplying electric power to each section, and a control section 90 that controls the operation of each section in an integrated manner.

As shown in FIGS. 4 and 5, in the left-right direction Y along which the tubes T1 and T2 extend, the side where the positions of the tubes T1 and T2 are switched after fusing with the fusing position X0 as a boundary is the "replacement side X1." The opposite side is called "fixed side X2". Details will be described below.

As shown in FIGS. 1 and 2, the housing 10 includes an upper portion 11 corresponding to the upper side surface of a substantially hexahedron, and a lower portion 12 disposed below the upper portion 11 and constituting side surfaces other than the upper side surface of the substantially hexahedron. It consists of a combined case. The upper portion 11 is formed so as to incline from the rear to the front.

The upper portion 11 includes inclined surfaces 11g and 11h, a concave portion 11j, and a convex portion 11k, as shown in FIG. The inclined surfaces 11g and 11h are inclined such that the rear end side of the upper portion 11 is higher than the front end side thereof. The inclined surface 11h is located closer to the front end than the inclined surface 11g across the recess 11j. Although the inclined surfaces 11g and 11h are configured to be substantially coplanar, the present invention is not limited to this.

The recess 11j is provided adjacent to the inclined surfaces 11g and 11h as shown in FIG. The recess 11j is formed so as to be recessed in the height direction Z from the surface of the disguise formed by linearly connecting the inclined surfaces 11g and 11h. As shown in FIG. 5, the connector T12 of the tube T1 and part of the tube T2 can be placed in the recess 11j.

The convex portion 11k is provided so as to protrude in the height direction Z from the concave portion 11j. A portion of the tube T1 can be arranged on the convex portion 11k as shown in FIG. As shown in FIG. 4 and the like, a display section 71 for displaying the progress of bonding is provided on the front end side of the upper surface of the upper portion 11 . Also, an illustration or the like that instructs the arrangement of the tubes T1 and T2 set in the clamp portion 20 can be attached to the front side of the upper portion 11 . As a result, the tubes T1 and T2 can be set at proper positions without mistaking the arrangement positions of the tubes T1 and T2.

On the rear end side of the upper portion 11, as shown in FIG. Moreover, as shown in FIG. 1, the upper surface of the upper portion 11 is provided with a hole 11r into which the clamp portion 20 can be fitted. Further, the side surface of the upper portion 11 is provided with an insertion hole 11c for inserting the cassette WC and a switch 11d for taking out the cassette WC inserted in the housing 10 . When the user M pushes the switch 11d with his/her finger while the cassette WC is inserted through the insertion hole 11c, the cassette WC can be taken out of the housing 10 through the insertion hole 11c. In addition, as shown in FIG. 3, the upper portion 11 incorporates a sensor 11e capable of measuring the environmental temperature around the housing 10. As shown in FIG. The heating time for the wafer WF to heat the tubes T1 and T2 can be adjusted according to the environmental temperature measured by the sensor 11e.

As shown in FIG. 12, the lower portion 12 has a flat bottom surface 12a and legs 12b that come into contact with a table or other place on which the lower portion 12 is placed.

The clamping part 20 holds the tubes T1 and T2 in a juxtaposed state, presses the tubes T1 and T2 against each other during fusing, exchanges the positions of one side of the tube T1 and one side of the tube T2 after fusing, and clamps one side of the tubes T1 and T2. is pressed against the other in the horizontal direction Y.

As shown in FIG. 6, the clamping part 20 has a pedestal 21 protruding from the upper part 11 fixed to the bottom surface 12a of the housing 10, and can be opened and closed by moving relatively toward or away from the pedestal 21. and a configured lid portion 22 . The clamp section 20 is provided on a base 21 and includes a holding section 23 that holds the tubes T1 and T2, and a sensor 24 that can detect whether or not the tubes T1 and T2 are set. As shown in FIGS. 6 and 14, the clamp section 20 detects the opening and closing of the lid section 22 and the pressing section 25 that presses and crushes the tubes T1 and T2 as the lid section 22 relatively approaches the pedestal 21. and a sensor 26 for

The pedestal 21 includes a first pedestal 211 provided on the fixed side X2 of the tubes T1 and T2, and a second pedestal 212 provided on the exchange side X1 of the tubes T1 and T2, as shown in FIGS. there is A gap 21a is provided between the first pedestal 211 and the second pedestal 212 along the extending direction of the tubes T1 and T2. The gap 21 a is provided for the wafer WF to pass through when the wafer WF before use moves to the cutting position or when the used wafer WF is sent out of the housing 10 .

Further, each of the first pedestal 211 and the second pedestal 212 is provided with an engaged portion 213 for engaging (hooking) and fixing with an engaging claw 225 of the lid portion 22 described later.

The lid portion 22 includes a first arm 221 rotatable with respect to the first pedestal 211 and a second arm 222 rotatably provided with respect to the second pedestal 212 . The lid portion 22 includes a cover 223 that covers the first arm 221 and the second arm 222, and a grip portion 224 that is rotatably provided with respect to the first arm 221 and the second arm 222 and that can be gripped by the user M. , is equipped with The lid portion 22 further includes an engaging claw 225, a first rotating shaft 226, a second rotating shaft 227, and an urging portion 228, as shown in FIGS.

The first arm 221 and the second arm 222 are configured to be rotatable.

The cover 223 integrally covers the first arm 221 and the second arm 222 . Therefore, as shown in FIG. 2, when the lid portion 22 is closed, the cover 223 can surround the first pedestal 211, the second pedestal 212, and the fusion-bonding region therebetween, that is, the holding portion 23. cover to As shown in FIG. 6, the cover 223 includes a first member 223a provided on the base side of the cover 223 and a tip side of the first rotation shaft 226 relative to the first member 223a. and a second member 223b that can be accommodated inside the first member 223a. The second member 223b is configured to be slidable with respect to the first member 223a. The cover 223 corresponds to the main body in this specification.

The second member 223b includes a proximal end surface 223c and a distal end surface 223d as shown in FIG. The base end surface 223c is provided on the base end side (base side) on the outside of the second member 223b. The base end surface 223c is arranged at a position higher in the height direction Z than the second rotating shaft 227 when the lid portion 22 is closed as shown in FIG. The distal end surface 223d continues to the proximal end surface 223c and is provided on the outer side of the second member 223b and closer to the distal side than the proximal end surface 223c. 223 d of front end surfaces are formed inclining so that the base end surface 223c and the 2nd rotating shaft 227 with different heights may be connected when the cover part 22 is closed. Note that the configuration of the cover 223 is not limited to the above as long as it can cover the first pedestal 211, the second pedestal 212, and the region where the fusion-bonding is performed when the lid portion 22 is closed. may be configured.

7 to 10, the grip portion 224 is rotatably provided on the second rotating shaft 227, and configured to be grippable or abuttable by the fingers of the user M. As shown in FIGS. The gripping portion 224 is provided adjacently with an engaging claw 225 that can be engaged with the engaged portion 213 of the base 21 . Therefore, as shown in FIG. 13, after the first arm 221, the second arm 222, and the cover 223 are brought closer to the housing 10 side, the grip portion 224 is rotated with respect to the first arm 221 and the second arm 222. By doing so, the engaging claw 225 engages with the engaged portion 213 . As a result, the state in which the clamping portion 20 sandwiches the tubes T1 and T2 can be preferably maintained. In addition, the grasping portion 224 moves the base side of the hand of the user M from the proximal end surface 223c of the cover 223 to the distal end surface 223d and further to the grasping portion 224, whereby the engaging claws 225 are covered in the same manner as described above. It can be engaged with the engaging portion 213 .

The engaging claw 225 is provided rotatably with respect to the cover 223 and configured to be engaged with the engaged portion 213 of the pedestal 21 . The engaging claw 225 is configured to be rotatable from 90 degrees to less than 180 degrees with respect to the angle θ at which it engages with the engaged portion 213 on the second rotating shaft 227 . Here, the angle θ at which the engaging claw 225 engages with the engaged portion 213 on the second rotating shaft 227 means the angle of the engaging claw 225 shown in FIG. 9 . Considering the grip portion 224 as a reference, the angle θ1 at which the engaging claw 225 can rotate is the angle shown in FIG. The engaging claws 225 are provided at two locations on the grip portion 224 in the horizontal direction Y as shown in FIG. The engaging claw 225 is formed in a curved shape in this embodiment. Also, the two engaging claws 225 are formed in different shapes as shown in FIG. 6 in this embodiment. However, it is not limited to the above, and when there are a plurality of engaging claws, the plurality of engaging claws may be configured to have the same shape. Also, in FIG. 11, only one engaging claw 225 is illustrated for convenience of explanation.

The first rotating shaft 226 rotatably supports the cover 223 of the lid portion 22 with respect to the base 21 . The first rotating shaft 226 is provided near the rear end of the pedestal 21 and on the root side of the cover 223 . The first rotating shaft 226 is configured parallel to the left-right direction Y. As shown in FIG.

The second rotating shaft 227 rotatably supports the engaging claw 225 with respect to the cover 223 . The second rotating shaft 227 is provided at the boundary between the tip surface 223d of the cover 223 and the grip portion 224 as shown in FIG. The second rotating shaft 227 rotatably supports the grip portion 224 with respect to the cover 223 together with the engaging claw 225 . The second rotating shaft 227 is parallel to the left-right direction Y, like the first rotating shaft 226 .

The biasing portion 228 is provided on the lid portion 22 . The biasing portion 228 biases the engaging claw 225 in a second rotating direction r2 opposite to the first rotating direction r1 in which the engaging claw 225 engages the engaged portion 213 . In this specification, the first rotation direction r1 corresponds to the direction of clockwise rotation about the left-right direction Y as the rotation axis in FIGS. The second rotation direction r2 corresponds to a direction of counterclockwise rotation about the left-right direction Y as a rotation axis in FIGS. The force with which the urging portion 228 urges the engaging claw 225 in the second rotation direction r2 is greater than the force required to close the lid portion 22 when the tubes T1 and T2 are not held by the holding portion 23. It is configured to be The biasing portion 228 is configured by an elastic member such as a coiled spring in this embodiment. However, the specific configuration of the urging portion is not limited to the coiled spring as long as it can urge the engaging claw 225 in the second rotation direction r2 to suppress idle rotation of the engaging claw 225 .

As shown in FIGS. 5 and 6, the holding portion 23 includes a first holding portion 231 that fixedly holds the fixed sides X2 of the tubes T1 and T2 and movably holds the exchange sides X1 of the tubes T1 and T2. and a second holding portion 232 for holding. The holding portion 23 includes a release portion 233 capable of switching from a holding state in which the tubes T1 and T2 are held by the second holding portion 232 to a release state in which the holding is released, and a release portion 233 that switches the second holding portion 232 from the release state to the holding state. and a possible restorer 234 .

The first holding portion 231 is fixed to the upper surface of the first pedestal 211 . As shown in FIG. 6, the first holding portion 231 includes a concave groove 231a that can be arranged so as to fit the tube T1, and a concave groove 231b that can be arranged so that the tube T2 can be fitted.

As shown in FIG. 12, the grooves 231a and 231b are arranged in a direction (oblique direction) inclined at an angle θ2 with respect to the mounting surface FS of the housing 10 . Therefore, when the lid portion 22 is opened, the tubes T1 and T2 are held by the first holding portion 231 in a state of being lined up at an angle to the placement surface FS in the holding portion 23 . Note that the groove 231a arranged on the far side in the direction D1 in which the tubes T1 and T2 are arranged is arranged at a higher position in the height direction Z of the housing 10 than the groove 231b.

Further, the grooves 231a and 231b are provided on the upper surface side of the first holding portion 231 so as to be recessed along a direction substantially perpendicular to the oblique direction D1 (see direction D2 in FIG. 13). Therefore, the tubes T1 and T2 are set so as to be inserted from a direction D2 perpendicular to the direction D1 in which the tubes T1 and T2 are arranged. This allows the user M to easily set the tubes T1 and T2 while the lid 22 is open.

As shown in FIG. 6, the second holding portion 232 is rotatably attached to the side surface of the second pedestal 212 about a rotating shaft 232c substantially parallel to the left-right direction Y as the center of rotation. The second holding portion 232 includes groove portions 232a and 232b arranged at the same height and inclination as the first holding portion 231 when the lid portion 22 is opened. The groove portions 232a and 232b are configured to hold the tubes T1 and T2 together with the first holding portion 231 when the lid portion 22 is opened. The second holding portion 232 is displaced downward in the height direction Z with the rotating shaft 232c as the center of rotation when the lid portion 22 is closed, and the groove portions 232a and 232b are separated from the tubes T1 and T2.

As shown in FIG. 6, the releasing portion 233 is a protrusion that protrudes from the base portion of the second holding portion 232 toward the flat surface of the second arm 222 (height direction Z in FIG. 6) when the lid portion 22 is open. I have.

The protrusion of the release portion 233 comes into contact with the flat surface of the second arm 222 provided on the lid portion 22 as the lid portion 22 relatively approaches the housing 10 . The protrusion of the releasing portion 233 is configured to retract the second holding portion 232 from the holding position to the releasing position as the lid portion 22 relatively approaches the housing 10 . In this specification, the release state means a state in which the tubes T1 and T2 are not arranged in the grooves 232a and 232b of the second holding portion 232 when the lid portion 22 is closed.

As indicated by the dashed line in FIG. 6, the restoring portion 234 has a cam capable of pushing up the second holding portion 232 in conjunction with the movement of the second arm 222 of the lid portion 22 relatively separating from the housing 10. I have. The restoring portion 234 is configured to contact the second holding portion 232 .

The cam of the restoring portion 234 has a substantially fan-shaped outer shape as viewed from the left-right direction Y of the housing 10 . The cam of the restoring portion 234 is fixed near the rotating portion of the second arm 222 . Therefore, the cam of the restoring portion 234 rotates in conjunction with the rotation of the second arm 222 . Thus, the second holding portion 232 is configured to be movable between the holding position and the releasing position by the releasing portion 233 and the restoring portion 234 .

Furthermore, in the present embodiment, the releasing portion 233 retracts the second holding portion 232 from the holding position to the releasing position after the pressing portion 25, which will be described later, sandwiches the tubes T1 and T2. Therefore, the pressing portion 25 can sandwich the tubes T1 and T2 while the replacement sides X1 of the tubes T1 and T2 are held at appropriate positions by the second holding portion 232 .

The sensor 24 is provided in the grooves 231a and 231b as shown in FIG. a Hall element (not shown). An elastic member (not shown) allows the pins to protrude and sink from the bottoms of the grooves 231a and 231b. The pins allow the tubes T1, T2 to protrude and retract from the bottoms of the grooves 231a, 231b. The pin changes its position from the projecting position to the recessed position by fitting the tubes T1, T2 into the grooves 231a, 231b. The magnets move as the pins protrude or recess from the grooves 231a, 231b, while the Hall elements are positioned adjacent to the magnets at the bottom of the grooves 231a, 231b. The sensor 24 detects whether or not the tubes T1 and T2 are arranged in the grooves 231a and 231b by changing the magnitude of the magnetic force of the magnet detected by the Hall element according to the position of the pin. However, the specific configuration is not limited to the above, as long as it can be detected that the tubes T1 and T2 are arranged in the grooves 231a and 231b.

The pressing portion 25 includes a fixed pressing portion 25a and a movable pressing portion 25b, as shown in FIG.

As shown in FIGS. 12 and 13, the fixed-side pressing portion 25a moves the tubes T1 and T2 closer to each other in the direction D1 in which the tubes T1 and T2 are arranged when the cover portion 22 is closed on the fixed side X2 of the tubes T1 and T2. A pressing force is applied to the abutted tubes T1 and T2. The fixed-side pressing portion 25a includes a lid-side pressing portion 251 provided on the first arm 221 and a housing-side pressing portion 252 provided on the first pedestal 211, as shown in FIGS.

As shown in FIG. 13, when the cover 22 is closed on the exchange side X1 of the tubes T1 and T2, the movable-side pressing portion 25b moves the tubes T1 and T1 in the direction D1 in which the tubes T1 and T2 are arranged in the same manner as the fixed-side pressing portion 25a. T2 is brought closer to press the tubes T1 and T2 in contact with each other. The movable-side pressing portion 25b includes a lid-side pressing portion 253 provided on the second arm 222 and a housing-side pressing portion 254 provided on the second pedestal 212, as shown in FIGS. The lid-side pressing portion 253 is rotatably provided on the lid portion 22 , and the housing-side pressing portion 254 is rotatably provided on the housing 10 . The lid-side pressing portion 253 and the housing-side pressing portion 254 are configured to apply pressing force to the tubes T1 and T2 when the lid portion 22 is closed.

19, the movable-side pressing portion 25b replaces the movable-side ends of the fused tubes T1 and T2 with respect to the fixed side by means of a configuration (not shown) such as a motor and gears. Further, the movable-side pressing portion 25b presses the movable-side tubes T1 and T2 whose ends are exchanged with respect to the fixed-side tubes T1 and T2 in the horizontal direction Y against the fixed-side tubes T1 and T2. The movable-side pressing portion 25b includes a rotatable cam (not shown) and a contact member (not shown) capable of contacting the cam in the horizontal direction Y (not shown). The movable-side pressing portion 25b moves the ends of the tubes T1 and T2 on the exchange side X1 to the tubes T1 and T2 on the fixed side X2 by changing the contact position of the cam with the contact member in the left-right direction Y according to the rotation of the cam. Press against the end of T2.

The sensor 26 detects that the lid portion 22 is closed with respect to the base 21 . The specific configuration of the sensor 26 is not particularly limited as long as it can detect that the lid portion 22 is closed with respect to the pedestal 21 and start the tube joining operation. As an example, in the present embodiment, a sensor such as a limit switch is provided near the engaged portion 213, and the sensor is pushed when the engaging claw 225 engages with the engaged portion 213, whereby the lid is opened. It detects that the part 22 is closed.

The interlock 30 has a function of locking the tubes T1 and T2 in a state in which the clamp portion 20 is sandwiched between them during fusing and joining. In this embodiment, the interlock 30 is composed of an electromagnetically driven solenoid rod 31 as shown in FIG.

The storage unit 40 is located at the location shown in FIG. 3, and has a function of storing the cassette WC inserted into the housing 10 and a function of detecting the remaining amount of wafers WF in the cassette WC. The storage section 40 includes a mounting section to which the cassette WC inserted from the insertion hole 11c is mounted, and a wafer sensor capable of detecting the remaining amount of wafers WF in the cassette WC (not shown). The wafer sensor can be composed of, for example, a known photosensor.

The feeding unit 50 is located at the location shown in FIG. 3 , feeds the wafer WF to the cutting position, heats the wafer WF during cutting, cools the used wafer WF, and transports the used wafer WF to the housing 10 . to the outside of

The feeding unit 50 is configured to be able to feed the wafers WF from the cassette WC in the storage unit 40 to the fusing position. The feeding unit 50 includes a driving unit capable of feeding the used wafer WF to the outside of the housing 10 through the gap 21 a between the first pedestal 211 and the second pedestal 121 . The feeding unit 50 includes a heater capable of heating the wafer WF during fusing and a fan capable of cooling the used wafer WF (not shown).

The operation unit 60 receives instructions from the user M to the tube joining device 1 . The operation unit 60 includes a switch for switching ON/OFF of the power supply of the tube joining device 1 and the like. Although the operation unit 60 is provided on the rear end side of the upper part 11 of the housing 10 as shown in FIG. 2 in this embodiment, the specific position is not limited to this.

The notification unit 70 notifies the user M of necessary information. As shown in FIGS. 1 and 3, the notification unit 70 includes display units 71 and 72 for displaying information necessary for the user M, and a speaker 73 for notifying the information necessary for the user M by voice. there is

The supply section 80 has a function of supplying electric power to each section of the tube joining apparatus 1 . The supply unit 80 includes a battery 81 capable of supplying power to each unit and a charger 82 for charging the battery 81, as shown in FIG.

The control section 90 controls each section of the tube joining device 1 in an integrated manner. The control unit 90 includes a CPU such as a microcomputer, a ROM that stores a control program for the entire apparatus executed by the CPU and various data, and a RAM that temporarily stores measurement data and various data as a work area. there is

The control unit 90 is electrically connected to the supply unit 80 and receives power supply from the supply unit 80, as shown in FIG. In addition, the control section 90 is electrically connected to the operation section 60, and configured to be able to control the operation of each section according to instructions from the user M. In addition, the control section 90 is electrically connected to the notification section 70 and configured to be able to notify the user M of necessary information.

Also, the control unit 90 is electrically connected to the sensors 24 and 26, the wafer sensor of the storage unit 40, the interlock 30, and the sensor 11e. The control unit 90 detects the set of the tubes T1 and T2 by the sensor 24, detects the closed state of the lid 22 by the sensor 26, and performs the fusing operation by the wafer WF when one or more wafers WF are present in the cassette WC by the wafer sensor. control to start The start of fusing work by the wafer WF is not limited to the case where the above conditions are satisfied, and the fusing work may be started by the user pressing a button or the like.

When the control unit 90 obtains information from the sensor 24 that the tubes T1 and T2 are not set properly, the notification unit 70 notifies that effect. Further, when the control unit 90 obtains information from the sensor 26 that the lid 22 is not properly closed, the control unit 90 causes the notification unit 70 to notify that effect. If the cassette WC contains no usable wafers WF, the control unit 90 causes the notification unit 70 to notify that effect. The controller 90 causes the interlock 30 to keep the lid 22 closed during the fusion-bonding. Further, the control unit 90 adjusts the heating time of the tubes T1 and T2 by the wafer WF at the time of fusing based on the environmental temperature of the housing 10 measured by the sensor 11e.

Also, the control section 90 is electrically connected to the storage section 40 and the feeding section 50, and is configured to be able to control these operations. The control unit 90 is electrically connected to a motor (not shown) of the movable-side pressing unit 25b, and controls the position exchange operation of the movable-side pressing unit 25b.

The cassette WC accommodates a plurality of wafers WF as shown in FIG. The cassette WC is put in and taken out through the insertion hole 11 c of the tube joining device 1 . The used wafer WF is taken out of the housing 10 through the gap 21a between the first pedestal 211 and the second pedestal 212, as shown in FIG. In this embodiment, the tube T1 is configured by a tube on the peritoneal dialysate bag T11 side (see FIG. 15). Specifically, a predetermined connector T12 is attached to the tip of the tube T1. The opposite side of tube T1 is connected to dialysate tube T14 of dialysate bag T11 via branch tube T13. Further, the tube T1 is connected to a drainage tube T16 of a drainage bag T15 via a branch tube T13.

The tube T2 is configured by a tube on the peritoneal catheter T26 side of the user M, which is used when peritoneal dialysis is performed. Specifically, the tube T2 includes an extension tube T21 and a protection tube T22. The extension tube T21 is connected to a peritoneal catheter T26 via a connecting tube T23, a silicone tube T24, and a catheter joint T25. One end of the peritoneal catheter T26 is inserted into the abdominal cavity of the user M. As shown in FIG. In addition, the tubes T1 and T2 are constituted by tubes made of vinyl chloride in the present embodiment. However, the materials of the tubes T1 and T2 are not limited as long as they can be joined to each other by fusing and pressurizing. For example, the tubes T1 and T2 may be made of different materials.

Next, a usage example of the tube joining set S will be described. First, the user M inserts the cassette WC into the insertion hole 11c of the tube joining device 1 when using the tube joining device 1 . Next, the user M presses the button of the operation unit 60 to turn on the power of the tube joining device 1 .

Next, the user M opens the lid portion 22 of the tube joining device 1, as shown in FIG. Next, the user M sets the tubes T1, T2 in the grooves 231a, 231b, 232a, 232b of the holding part 23, as shown in FIGS. Next, the user M brings the cover 223 of the lid portion 22 closer to the pedestal 21 and engages the engaging claw 225 with the engaged portion 213 . With the operation described above, the lid portion 22 is closed, and the outer peripheral portions of the fused portions of the tubes T1 and T2 are covered with the cover 223 and isolated from the outside. This makes it possible to carry out the fusing and joining operations in an aseptic state.

Next, the control unit 90 causes the sending unit 50 to take out the wafer WF from the wafer cassette WC and send it to the fusing preparation position (the position where the wafer WF is indicated by the dashed line in FIG. 18). The control unit 90 starts control of the fusing operation when the conditions of remaining wafers WF usable for fusing in the cassette WC, setting tubes in the holding unit 23, and closing the lid unit 22 are satisfied. .

First, the controller 90 operates the interlock 30 to lock the lid 22 in the closed state.

Then, the wafer WF at the fusing preparation position is heated by the built-in heater. Then, the heated wafer WF is moved by the feeding unit 50 to the cutting position (the position where the wafer WF is indicated by the solid line in FIG. 18), and the cutting is performed as shown in FIG.

Next, as shown in FIG. 19, the control section 90 causes the movable-side pressing section 25b to switch the positions of the replacement side X1 of the tube T1 and the replacement side X1 of the tube T2. After that, as shown in FIG. 20, the control section 90 presses the fixed side and the movable side of the exchanged tubes T1 and T2 by the movable side pressing section 25b to perform pressure bonding.

Next, the controller 90 unlocks the interlock 30 . Next, the user M performs an operation to open the lid portion 22 and remove the tubes T1 and T2 from the tube joining device 1 as shown in FIG.

As described above, the tube joining apparatus 1 fuses the ends of the tubes T1 and T2, and then replaces and joins the fused ends of the tubes T1 and T2. The tube joining device 1 includes a pedestal 21 and a lid portion 22 . The pedestal 21 is provided with holding portions 23 for holding the tubes T1 and T2. The lid portion 22 is installed to be openable and closable with respect to the pedestal 21 . The pedestal 21 includes an engaged portion 213 that can be engaged with the lid portion 22 . The lid portion 22 includes a cover 223 , a first rotating shaft 226 , an engaging claw 225 , a second rotating shaft 227 and an urging portion 228 . The cover 223 is configured to be able to surround the holding portion 23 . The first rotating shaft 226 rotatably supports the cover 223 with respect to the base 21 . The engaging claw 225 is provided rotatably with respect to the cover 223 and configured to be engaged with the engaged portion 213 of the pedestal 21 . The second rotating shaft 227 rotatably supports the engaging claw 225 with respect to the cover 223 . The biasing portion 228 is provided on the lid portion 22 and biases the engaging claw 225 in a second rotational direction r2 opposite to the first rotational direction r1 in which the engaging claw 225 engages the engaged portion 213. .

As a result, the engagement claw 225 is prevented from rotating in the first rotation direction r1 unless the user M applies a force that resists the force of the biasing portion 228 due to the biasing of the biasing portion 228 . Therefore, the engaging claw 225 is prevented from unintentionally rotating in the first rotation direction r1 at a position where the lid portion 22 is relatively far from the pedestal 21, and the engaging claw 225 does not engage with the engaged portion 213. It is possible to suppress idling.

Further, the force with which the urging portion 228 urges the engaging claw 225 in the second rotation direction r2 is greater than the force required to close the lid portion 22 when the tubes T1 and T2 are not held by the holding portion 23. is configured to be larger. As a result, it is possible to prevent the engaging claw 225 from not engaging with the engaged portion 213 due to insufficient biasing force of the biasing portion 228 and idling.

In addition, the lid portion 22 includes a grip portion 224 that is rotatably provided on the second rotating shaft 227 and that can be gripped or abutted by the fingers of the user M. As shown in FIG. The cover 223 has a proximal end surface 223c and a distal end surface 223d. The base end surface 223c is provided on the outside of the cover 223 on the root side, and is arranged at a position higher than the second rotating shaft 227 when the lid portion 22 is closed. The distal end surface 22dc is formed to connect the proximal end surface 223c, which is provided on the outer side of the cover 223 to the distal end side relative to the proximal end surface 223c and has different heights when the lid portion 22 is closed, and the second rotating shaft 227. . As a result, the base of the hand or the like is brought into contact with the cover 223, and the engagement claw 225 is rotated in the first rotation direction r1 by moving the base of the hand or the like from the proximal end surface 223c to the grip portion 224 through the distal end surface 223d. and the engaging claw 225 can be engaged with the engaged portion 213 . Therefore, the operation of closing the lid portion 22 can be easily performed.

In addition, the engaging claw 225 is configured to be rotatable from 90 degrees to less than 180 degrees with respect to the angle of engagement with the engaged portion 213 on the second rotating shaft 227 . As a result, it is possible to suppress unintentional rotation of the engaging claw 225 to an angle at which it engages with the engaged portion 213 at a position relatively far from the pedestal 21, and to suppress idle rotation of the engaging claw 225. .

The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. In the above description, the cover 223 includes the distal end surface 223d that is inclined so as to connect the second rotating shaft 227 and the proximal end surface 223c having different heights when the lid portion 22 is closed. Not limited. In addition to the above, the cover of the lid portion may or may not have a base end surface and a top end surface, but may be configured from one surface and be inclined with respect to the placement surface when the lid is closed. It doesn't have to be. Further, if the shape of the engaging claw 225 and the engaged portion 213 can be such that the engaging claw and the engaged portion can be engaged when the lid portion is closed, the shape and number of the engaging claw and the engaged portion can be specified. The typical specifications are not limited to the above embodiments.

In addition, the present invention can be used not only for peritoneal dialysis, but also for a device that aseptically joins a tube connected to a container (bag) containing a blood product used for transfusion and another tube. In this case, the sterility of blood components (preparations) and the like in the tube and bag can be maintained.

The present invention can also be used as a device for aseptically joining a tube connected to a container (bag) containing a cell culture solution containing various collected and cultured cells to another tube. In this case also, the sterility and safety of the tube and the cell culture medium in the bag can be maintained when the tube is joined.

1 tube splicing device,
21 Pedestal,
213 engaged portion,
22 lid,
223 cover (main body),
223c proximal surface,
223d tip surface,
224 gripping portion,
225 engagement pawl;
226 first rotation axis,
227 second axis of rotation;
228 biasing portion;
23 holding part,
M User,
r1 first rotation direction,
r2 second rotation direction,
T1 (first) tube,
T2 (second) tube,
θ, θ1, θ2 angles.

Claims (3)

A tube joining device for fusing an end of a first tube and an end of a second tube, then replacing and joining the fused end of the first tube and the fused end of the second tube,
a pedestal provided with a holding portion that holds the first tube and the second tube;
a lid portion installed to be openable and closable with respect to the pedestal;
The pedestal includes an engaged portion that can be engaged with the lid portion,
The lid is
a body portion capable of surrounding the holding portion;
a first rotating shaft that rotatably supports the main body with respect to the pedestal;
an engaging pawl provided rotatably with respect to the main body portion and capable of engaging with the engaged portion of the pedestal;
a second rotating shaft that rotatably supports the engaging claw with respect to the main body;
an urging portion provided in the lid portion for urging the engaging claw in a second rotational direction opposite to a first rotational direction in which the engaging claw engages the engaged portion; ,
The force with which the biasing portion biases the engaging claw in the second rotational direction is greater than the force required to close the lid,
The tube connecting device , wherein the lid portion is rotatably provided on the second rotating shaft and includes a grip portion that can be gripped or abutted by a user's fingers. The main body has a base end surface provided on the outside of the main body on the root side and arranged at a position higher than the second rotation shaft when the lid is closed, and the base end surface on the outside of the main body. 2. The tube according to claim 1, further comprising a distal end surface formed to connect the second rotating shaft and the proximal end surface having different heights when the lid portion is closed and provided on the distal side of the tube. Welding equipment. 3. The tube joint according to claim 1 or 2, wherein the engaging pawl is configured to be rotatable from 90 degrees to less than 180 degrees with respect to an angle at which the engaging claw engages with the engaged portion on the second rotating shaft. Device.

Images