JP4769472B2 - Connector removal device - Google Patents

Description

  The present invention relates to a device for separating and connecting a screw connection type connector, and more particularly to a connector detaching device applied to medical use, for example, separation and connection of a tube connector for peritoneal dialysis.

Conventionally, a screw-type connector is provided on both the tube connected to the patient used in the peritoneal dialysis equipment and the tube connected to the bag containing the dialysate, and this connector is removed. The patient side and the bag containing the dialysate are disconnected or connected, and this operation is required to be performed in an extremely short time based on an environment that can prevent the invasion of bacteria. .

The prior art of the connector attaching / detaching apparatus will be described using the following patent documents.
JP-A-8-725 (6th page, FIG. 4) Japanese Patent No. 3455701 JP 2002-224214 A

  For example, an automatic connector connection device disclosed in Patent Document 1 is known as a device for meeting the above demand. In this example, as schematically shown in FIG. 3, in the connector connecting device 100, a combination of the base part 102 of the patient side connector and the sealing plug 103 of the patient side connector is screwed, and the connector of the dialysate bag 200 After inserting the base portion 202 and the set to which the sealing plug 203 is screwed, the motor M1 is driven to loosen the screws of both sets. Next, the base part 202 of the dialysate side connector and the sealing plug 103 of the patient side connector are moved rightward by the motor M2. Next, the base part 202 of the dialysate side connector and the sealing plug 103 of the patient side connector shown in FIG. 3 are moved upward by the motor M3, further moved leftward by the motor M2, and then the motor M1. A series of operations is completed by tightening the base portions 102 and 202 of the connector. In addition, 101 is a patient side tube, 104 is a patient, 201 is a dialysate side tube, and 204 is an empty bag.

  However, in the example shown in FIG. 3 described above, the connector is separated, moved, and tightened by the power of the motor and the like, and the operation can be completed easily in a short time. Since a complicated electric control circuit is required by using three, there is a problem that it becomes unusable when an electrical trouble occurs and a problem that the number of parts increases.

  As an apparatus for improving such a problem, a connector manual attachment / detachment apparatus of Patent Document 2 previously filed by the same applicant is disclosed. 4 to 8 show such a conventional apparatus, FIG. 4 is a front view of the medical connector attaching / detaching device 10, FIG. 5 is a side view, 1 is a housing, 2 is a lid, and 3 is an operation handle. , 4 are rubber feet, and 5 is a suction cup. The housing 1 is positioned on the desk by the rubber feet 4 and the suction cups 5 and is operated by operating the operation handle 3.

  In addition, the connector holding portion 20 that holds the base portion 102 of the patient side connector and the sealing plug 203 of the dialysis fluid bag side connector, and the sealing portion 103 of the patient side connector and the base portion 202 of the dialysis fluid side connector are provided. A detachable portion 16 for holding and rotating, and a mechanism portion 17 for driving the connector holding portion 20 and the detachable portion 16 in conjunction with each other are provided in the mechanism portion 17 as shown in FIG. By rotating the handle 3, the patient-side connector sealing plug 103 and the dialysate-side connector base portion 202 are rotated by the detachable portion 16 in the first rotation, and the patient-side connector base portion 102, respectively. Is separated from the sealing plug 203 of the dialysate-side connector, and the sealing plug 203 of the dialysate-side connector is separated from the base 202 of the dialysate-side connector, and the connector holding portion 20 is rotated by the second rotation. Move the patient The base portion 102 of the side connector and the base portion 202 of the dialysate side connector are opposed to each other, and the base portion 102 of the patient side connector and the base portion 202 of the dialysate side connector are screwed and fastened in the third rotation. It is constituted as follows.

  6 is a state in which the lid 2 of the housing 1 is opened, and FIG. 7 is a longitudinal front view showing the relationship between the detachable portion 16 and the drive gear of the mechanism portion 17. An operation handle 3 is fixed at a position protruding outward from the housing. Further, as shown in the cross-sectional plan view of FIG. 8, two bevel gears 22-1 and 22-2 are fixed to the operation shaft 21 with an appropriate distance therebetween so that both bevel gear surfaces face each other. A gear set in which a bevel gear 23-1 meshing with the gear 22-1 and a partial gear 24 excluding some teeth are integrated, and a bevel gear 23-2 meshing with the bevel gear 22-2 and a part thereof A pair of gears integrated with the toothless gear 25 excluding the teeth is rotatably supported by two support shafts 40 and 41 provided in parallel with each other and spaced apart from each other by a predetermined distance. 41 is supported near the side surface of the housing by a bearing plate standing up from the substrate, and the holder on the attachment / detachment portion 16 is rotated by the rotation of the operation handle via the intermittent gears 24 and 25. It has become. The detachable portion 16 includes a gear 38 that meshes with the toothless gears 24 and 25 of the mechanism portion 17, gears 36 and 37 that mesh with the gear 38, and a gear 34 that is coupled to a holder on the detachable portion 16. And 35 are provided.

  10 to 13 show the relative positions of the gears, the drive pin 29 of the drive arm 26, and the U-shaped cam 61. The position in FIG. 10 shows the meshing state when the handle 13 is at the origin position, and the groove 16-3 for inserting the tubes provided in the gears 34 and 35 integral with each holder is directed right above. Further, the part of the toothless gear 25 that is notched is opposed to the gear 38, and the part of the toothless gear 24 is opposite to the gear 38. The position of the drive pin 29 of the drive arm 26 is at point A, which is the 3 o'clock position of the watch. Here, when the handle 3 is rotated about 60 degrees from the origin position, the toothless gear 24 meshes with the gear 36 via the gear 38 and rotates in the direction of the arrow to rotate the gears 34 and 35 counterclockwise. The position of the drive pin 29 of the drive arm 26 is rotated 180 degrees to a point B which is the 9 o'clock position of the watch.

  In this process, if the groove 16-3 for inserting the tube into the holder provided in the gear 34 comes to a position facing the gear 36, the gear 34 will not mesh with the gear 36, so that it cannot rotate. The gear 37 meshes with the gear 34 so that the rotation of the gear 38 is transmitted to the gear 34.

  In the position shown in FIG. 11, the toothless gear 25 is located at a position where the tooth is cut away from the gear 38, and the toothless gear 24 is located at a position where the toothed portion is cut away from the gear 38. It will not rotate in the operation of 3.

  Further, when the handle 3 is rotated 60 degrees, the drive pin 29 of the drive arm 26 is in the A position as shown in FIG. The portion without 24 teeth is positioned to face the gear 38, and the rotation of the toothless gear 25 is transmitted to the gear 38. Although the rotation direction of the handle 3 is the same, the rotation direction of the toothless gear 25 is transmitted from the bevel gears 22-2 and 23-2, so that the rotation direction of the gear 38 is opposite to that of the toothless gear 24. The gears 34 and 35 integrated with the holder rotate in the opposite direction, that is, clockwise, as shown in FIG. 10, and when the handle 3 is further rotated 60 degrees, the position shown in FIG. 13 is obtained. The position of the drive pin 29 is further rotated 180 degrees to the position of point B, which is the 9 o'clock position of the watch.

  FIG. 14 and FIG. 15 are explanatory diagrams for explaining a situation in which the connector of the patient 104 side and the connector of the dialysate bag 200 is detached in the peritoneal dialysis apparatus using the conventional apparatus. FIG. 14 shows a preparation state, in which the patient side tube 101 connected to the patient 104 and the base part 102 of the patient side connector are integrally joined, and the open end of the base part 102 of the patient side connector is the sealing plug 103. The tube 201 is connected to the dialysate bag 200, and the base portion 202 of the dialysate side connector is integrally coupled to the tube 201, and the open end of the base portion 202 of the dialysate side connector is connected to the tube 201. Is sealed with a sealing plug 203.

  The base part 102 of the patient side connector is attached to the lower groove of the connector holding part 20, the sealing plug 103 is attached to the lower holder of the detachable part 16, and the base part 202 of the dialysate side connector is attached to the upper holder of the detachable part 16. And a sealing plug 203 of the dialysate side connector is installed in the upper groove of the connector holding part 20.

  When the handle 3 is rotated about 60 degrees from the origin position as shown in FIGS. 10 to 13, the holder of the attachment / detachment portion 16 rotates and the screw of the screw portion of the connector rotates so as to loosen. Is released. Further, when the handle 3 is rotated 60 degrees, the holder of the attachment / detachment portion 16 does not rotate, and the connector holding portion 20 moves upward in a U shape and is held in the groove of the connector holding portion 20 so that the base portion of the patient side connector As shown in FIG. 15, the position 102 faces the dialysate-side connector 202 held by the holder of the attachment / detachment portion 16. Further, when the handle 3 is rotated 60 degrees, the base 202 of the dialysate connector held by the holder of the detachable part 16 is rotated and fixed to the base 102 of the patient connector.

  Next, a set in which the base part 102 of the patient side connector and the base part 202 of the dialysis side connector are connected from the groove of the connector holding part 20 and the holder of the detachable part 16, the sealing plug 103 of the patient side connector, and the dialysate side The connector sealing plug 203 is removed, and the connection between the patient side connector and the dialysate side connector is completed.

  When the handle 3 is returned to the origin position, the operation direction of the handle 3 is reversed, so that the order of FIG. 13 to FIG. 10 is followed, and the position of the drive pin 29 of the drive arm 26 is initially B at the position of FIG. When the handle 3 is rotated 60 degrees, the drive arm 26 is rotated 180 degrees counterclockwise to the point A of the drive pin 29 of the drive arm 26 in FIG. 12, and when the handle 3 is further rotated 60 degrees. The drive pin 29 engages with the bifurcated protrusion of the arm 30 provided on the slider 31 and the slider 31 moves in a U-shape, the position of the drive pin 29 becomes point B, and the drive pin 29 is rotated by the next 60 degrees. Rotates 180 degrees and returns to the origin of the point A position.

  When the base part 102 of the patient side connector and the base part 202 of the dialysate side connector are separated, the base part 102 of the patient side connector and the base part 202 of the dialysate side connector are coupled as shown in FIG. In this state, they are respectively attached to the lower groove of the connector holding portion 20 and the lower holder of the detachable portion 16, and new sterilized patient side connectors are attached to the upper groove of the connector holding portion 20 and the upper holder of the detachable portion 16. When a set of the sealing plug 103 and the sealing plug 203 of the dialysate side connector is attached and the handle 3 is rotated about 60 degrees, the base portion 102 of the patient side connector and the base portion 202 of the dialysate side connector If the screw connection is loose, and the screw connection between the new sterilized patient-side connector sealing plug 103 and the dialysate-side connector sealing plug 203 is loosened and further rotated by 60 degrees, as shown in FIG. Side connector A sealing plug 103 and a position facing part 102 is moved upward. When the patient is further rotated by 60 degrees, the sealing plug 103 is screwed into the base portion 102 of the patient side connector to complete the separation of the patient side connector. The base part 202 of the dialysate side connector and the sealing plug 203 are removed, and the handle 3 is returned to the origin position to complete the operation.

  Since the device 10 is a device for detaching the connector on the patient side and the connector on the dialysate side, the connector holding portion 20 and the detachable portion 16 for mounting the connector need to be kept clean. It is timely carried out by removing from the main body mechanism part and cleaning. However, when the detachable part 16 is removed from the main body mechanism part, the gears 24, 25 and the gear 38 of the detachable part 16 are disengaged, and the gears 34, 35 of the detachable part move freely, and the detachable part 16 is assembled to the mechanism part again. When attaching, there is a problem that the relative positions of the gears 34 and 35 are not fixed and accurate assembly is not possible. Therefore, this device is provided with a lock mechanism that prevents the gears 34 and 35 from rotating freely when the detachable portion 16 is detached from the mechanism portion.

  In the above locking mechanism, if the locking mechanism part is accidentally touched strongly or the rotating part is turned strongly when it is removed from the main body part, the phase of the transmission part with the mechanism part will be shifted, causing normal operation. In order to restore this state, there is a problem that the detachable part must be disassembled and readjusted by a dedicated person.

  In the connector attaching / detaching device of Patent Document 3 filed by the same applicant as the device that improved the above-described problem, the return mechanism includes a pin protruding from an end face of a gear provided on the holder in the attaching / detaching portion, and A substantially semicircular arc groove concentric with the gear formed on the bearing plate of the gear to be engaged with the pin, and a winding between the shaft of the gear for driving the gear in the detachable portion and the bearing plate It is the structure which consists of a return spring of the made Tsurumaki type.

  However, in the above configuration, the popidone iodine solution, which is the disinfectant sealed in the connector, may drip at the time of opening, and may adhere to the return spring of the detachable part. There is a problem in that normal operation cannot be performed due to a phase shift of transmission. This problem occurred not only when the above-mentioned detachable part was removed from the main body part but also during normal operation, causing a connector detachment failure. The present invention is an apparatus for separating and connecting a screw connection type connector that eliminates the drawbacks seen in the prior art and prevents intermittent connector transmission using intermittent rotation transmission means, particularly for medical applications such as peritoneal dialysis. It is an object of the present invention to provide a connector detaching device that is applied to separation and connection of a tube connector.

  A connector attaching / detaching device according to the present invention includes a connector holding portion for holding a base portion of a patient side connector (hereinafter referred to as a first connector) and a sealing plug of a dialysate side connector (hereinafter referred to as a second connector). A detachable portion for holding and rotating the sealing plug of the first connector and the base portion of the second connector, and a mechanism portion for driving the connector holding portion and the detachable portion in conjunction with each other. And an operating shaft in which the mechanism part is rotated through a handle, and two parts lacking some of the teeth that are synchronously rotated in opposite directions through gears by the rotation of the operating shaft. And a slider for holding the connector holding portion, which is moved left and right and back and forth via a pin that is moved around the guide cam by the operation shaft. The first to rotate the angle By rotating the sealing plug of the first connector and the base portion of the second connector in one direction through the toothed gear at the attachment / detachment portion, the base portion of the first connector and the second portion of the second connector are rotated. The connector holding part is moved through the slider relative to the detachable part by a second rotation that is separated from the sealing plug of the connector and further rotated by a predetermined angle in one direction, and the base part of the first connector And the base part of the second connector are opposed to each other, and the tooth part of the first connector and the base part of the second connector are connected to each other by the third rotation that is rotated by a predetermined angle in one direction. In the connector attaching / detaching device in which the first to third rotations are one operation, the synchronous rotation of the attaching / detaching portion is stopped and fixed during the second rotation. A transmission mechanism and a positioning mechanism for the intermittent transmission mechanism; Thus making it possible to prevent the connector desorption failure.

  Further, the connector detaching apparatus of the present invention includes a connector holding portion for holding the base portion of the first connector and the sealing plug of the second connector, the sealing plug of the first connector and the base portion of the second connector. A detachable portion for holding and rotating, and a mechanism portion for driving the connector holding portion and the detachable portion in conjunction with each other, and an operating shaft on which the mechanism portion is rotated via a handle; , Two toothless gears each lacking a part of the teeth that are synchronously rotated in opposite directions through the gears by the rotation of the operation shaft, and are moved around the guide cam by the operation shaft. The first connector sealing plug in a first rotation that rotates the handle in a predetermined angle in one direction. And the base of the second connector A second rotation that is rotated in one direction through the toothless gear at the detachable portion to separate from the sealing plug of the second connector and the original portion of the first connector, and further rotated by a predetermined angle in one direction. The connector holding portion is moved relative to the detachable portion via the slider so that the base portion of the first connector and the sealing plug of the first connector are opposed to each other and further rotated by a predetermined angle in one direction. In the third rotation, the base portion of the first connector and the sealing plug of the first connector are rotated in the opposite directions via the toothless gears and screwed and fastened. In the connector detaching apparatus with one rotation, the connector detachment failure is prevented by having an intermittent rotation transmitting means for stopping and fixing the synchronous rotation of the detachable portion during the second rotation and a positioning mechanism for the intermittent transmitting means. Make it possible.

As described above, according to the connector attaching / detaching device of the present invention, the first connector can be easily operated by only one operation of the handle without touching the open ends of the first connector and the second connector. And the second connector can be connected to and disconnected from each other, and the relative position between the gears is fixed and synchronized by the action of the intermittent rotation transmission means and the positioning mechanism so that normal operation is ensured. In addition, the operation of the positioning mechanism ensures that even if the backlash of each gear is large, the operation can be performed reliably, that is, the gear can be manufactured at low cost because the accuracy grade of the gear can be lowered.

  Hereinafter, the details of the present invention will be described using an embodiment of a medical connector attaching / detaching apparatus. FIG. 1 is a longitudinal sectional front view of the apparatus at the origin position of the intermittent transmission means of the present invention, and FIG. 2 is a cross-sectional plan view of the mechanism of the present invention. As shown in the figure, two bearings (not shown) for supporting the operation shaft 21 are provided on the substrate 1-1 of the housing 1 at an appropriate distance from each other. The operation handle 3 is fixed to the protruding position. 2, two bevel gears 22-1 and 22-2 are fixed to the operation shaft 21 with an appropriate distance therebetween so that both bevel gear surfaces face each other. A gear set in which a bevel gear 23-1 meshing with the gear 22-1, a toothless gear 24 excluding some teeth, and a cam 70 fixed to the toothless gear 24 are integrated; and the bevel gear 22-2 A bevel gear 23-2 that meshes with the toothless gear 25, a toothless gear 25 excluding some of the teeth, and a gear set in which the cam 71 fixed to the toothless gear 25 is integrated with a predetermined distance from each other in parallel. The two support shafts 40 and 41 are rotatably supported by the shafts, and are supported by bearing plates that stand up from the substrate 1-1 in the vicinity of the side surfaces of the housing 1 of the support shafts 40 and 41. The rotation of the operation handle 3 causes the shaft 42 to be freely coupled to the rotatable shaft 42 via the above-mentioned intermittent gears 24, 25. The forward and reverse rotation transmitted to 72 and the gear 39 the cam 73 is fixed, it is possible to rotate the holder on the desorption unit 16. The detachable portion 16 includes the gear 39 that meshes with the intermittent gears 24 and 25 of the mechanism portion 17, the gear 38 that meshes with the gear 39, the gears 36 and 37 that mesh with the gear 38, respectively. Gears 34 and 35 coupled to the holder on the detachable portion 16 are provided. Further, the shaft support plate is provided with a plunger 80 in sliding contact with the cam 73 at the rotation end position.

  FIGS. 18 to 21 show the operational positional relationship of each gear, and FIGS. 22 to 25 show the relative positions of the drive pin 29 of the drive arm 26 and the U-shaped cam 61 at that time. 18 and 22 show the meshing state when the handle 3 is at the origin position, and the groove 16-3 for inserting the tubes provided in the gears 34 and 35 integral with each holder is directed upward. ing. Further, the part of the toothless gear 25 that is notched is opposed to the gear 39, and the part of the toothless gear 24 that is opposite to the gear 39 is toothed. The position of the drive pin 29 of the drive arm 26 is at point A, which is the 3 o'clock position of the watch. Here, when the handle 3 is rotated about 60 degrees from the origin position, the toothless gear 24 meshes with the gear 36 via the gear 39 and the gear 38 and rotates in the direction of the arrow to rotate the gears 34 and 35 counterclockwise. 19 and FIG. 23, and the position of the drive pin 29 of the drive arm 26 is rotated by 180 degrees in the direction of the arrow to become point B which is the 9 o'clock position of the watch.

  In this process, if the groove 16-3 for inserting the tube into the holder provided in the gear 34 comes to a position facing the gear 36, the gear 34 will not mesh with the gear 36, so that it cannot rotate. The gear 37 meshes with the gear 34 so that the rotation of the gear 39 is transmitted to the gear 34 via the gear 38.

  In the position of FIG. 19, the toothless gear 25 is located at a position where the tooth is cut away from the gear 38, and the toothless gear 24 is located at a position where the toothed portion is cut away from the gear 39. 3, the cam 70 fixed to the toothless gear 24 and the cam 72 fixed to the gear 39 are engaged with each other on the arcuate surfaces and slide at the same time. Since the groove portion 73 engages with the tip ball portion of the plunger 80, even if the backlash of each gear is large or there is a gap between the sliding portions of the cam 70 and the cam 72, the rotation of the gear 24 and the gear 25 is not transmitted. It will be in the state which stops rotation of 39 reliably.

  Further, when the handle 3 is rotated 60 degrees, the drive pin 29 of the drive arm 26 is in the A position in the state shown in FIGS. 20 and 24, and the portion where the teeth of the missing gear 25 are opposed to the gear 39. Thus, the toothless portion of the toothless gear 24 becomes a position facing the gear 39, and the rotation of the toothless gear 25 is transmitted to the gear 39. During this 60-degree rotation, the gear 39 is stopped by the engagement of the cam 70 and the cam 72 and the engagement of the cam 73 and the plunger 80, and the portion where the teeth of the missing gear 25 are located opposite to the gear 39. Sometimes the cam 70 and the cam 72 are disengaged and the cam 73 and the plunger 80 are disengaged. Although the rotation direction of the handle 3 is the same, the rotation direction of the toothless gear 25 is transmitted from the bevel gears 22-2 and 23-2, so that the rotation direction of the gear 39 is opposite to that of the toothless gear 24. The gears 34 and 35 integrated with the holder rotate in the opposite direction to that in FIG. 18, that is, clockwise, and when the handle 3 is further rotated 60 degrees, the positions shown in FIGS. 21 and 25 are obtained. The position of the drive pin 29 of the drive arm 26 is further rotated 180 degrees to a position B which is a 9 o'clock position of the watch. Regarding the operation of the intermittent transmission mechanism, when the screw portion of the connector is attached to the holder and the handle 3 is operated as described above, the screw portion is loosened by the first 60 ° rotation, and the screw portion is not rotated by the next 60 ° rotation. It shows that the screw part can be tightened by the last 60 degree rotation without rotating.

  Although the operation has been described with the rotation angle of the handle 3 being 180 degrees, it is apparent that the present invention can be realized at other angles by changing the gear reduction ratio. Although the description is omitted, the engagement between the cam 72 and the cam 71 is added to smoothly engage and slide when the handle 3 is returned to the origin position. It will be apparent from the above detailed description. In the detailed description of the present invention, the drive source of the connector attaching / detaching device has been described as being manually operated by the handle, but the same effect as in the present invention can be obtained by using an electric drive source such as a motor for the operation shaft. It is obvious that Further, the present invention aims to improve the performance of a medical screw-type connector detachment apparatus, but the present invention can be applied to a screw-type connector detachment apparatus other than medical use.

It is an apparatus vertical front view in the origin position of the intermittent transmission means part of this invention. It is a mechanism part crossing top view of the connector removal | desorption apparatus of this invention. It is outline | summary explanatory drawing of the connector removal apparatus of a prior art. It is a front view of the conventional medical connector removal | desorption apparatus. It is a side view of the medical connector removal | desorption apparatus shown in FIG. It is a top view in the state where the lid of the medical connector detaching device shown in FIG. 4 was opened. It is a vertical front view of the detachable apparatus shown in FIG. It is a top view of the lower part of the desorption apparatus shown in FIG. It is operation | movement explanatory drawing of the medical connector removal | desorption apparatus of a prior art. It is operation | movement explanatory drawing of the principal part of the conventional apparatus. It is operation | movement explanatory drawing of the principal part of the conventional apparatus. It is operation | movement explanatory drawing of the principal part of the conventional apparatus. It is operation | movement explanatory drawing of the principal part of the conventional apparatus. It is a top view explaining the operation condition when connecting the patient side and the dialysate side in the conventional medical connector removal | desorption apparatus. It is a top view explaining the operation condition when connecting the patient side and the dialysate side in the conventional medical connector removal | desorption apparatus. It is explanatory drawing of the operation condition when separating the patient side and the dialysate side in the conventional medical connector removal | desorption apparatus. It is explanatory drawing of the operation condition when separating the patient side and the dialysate side in the conventional medical connector removal | desorption apparatus. It is operation | movement explanatory drawing of the principal part in the connector removal | desorption apparatus of this invention. It is operation | movement explanatory drawing of the principal part in the connector removal | desorption apparatus of this invention. It is operation | movement explanatory drawing of the principal part in the connector removal | desorption apparatus of this invention. It is operation | movement explanatory drawing of the principal part in the connector removal | desorption apparatus of this invention. It is operation | movement explanatory drawing of the principal part in the connector removal | desorption apparatus of this invention. It is operation | movement explanatory drawing of the principal part in the connector removal | desorption apparatus of this invention. It is operation | movement explanatory drawing of the principal part in the connector removal | desorption apparatus of this invention. It is operation | movement explanatory drawing of the principal part in the connector removal | desorption apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 1-1 Board | substrate 2 Cover 3 Operation handle 4 Rubber foot 5 Suction cup 10 Connector removal | desorption apparatus 16 Desorption part 16-1 Holder 16-2 Holder 16-3 Groove 17 Mechanism part 20 Connector holding part 21 Operation shaft 22-1 Umbrella Gear 22-2 Bevel Gear 23-1 Bevel Gear 23-2 Bevel Gear 24 Missing Gear 25 Missing Gear 26 Drive Arm 29 Drive Pin 34 Gear Integrated with Holder 35 Gear Integrated with Holder 36 Gear 37 Gear 38 Gear 39 Gear 39 40 support shaft 41 support shaft 42 shaft 57 fixing screw 60 support shaft 61 U-shaped cam 70 cam 71 cam 72 cam 73 cam 80 plunger 100 connector removal apparatus 101 patient side tube 102 patient side connector (first connector) source Part 103 Seal plug 104 of patient side connector (first connector) Patient 200 Dialysate bag 200-1 Dialysis Bag 201 sealing plug 204 empty bag dialysate side tube 202 dialysate connector base portion 203 dialysate side connector (second connector) (second connector)

Claims (2)

A connector holding portion for holding the first connector base and the second connector sealing plug, a detachable portion for holding and rotating the first connector sealing plug and the second connector base, and A connector holding portion and a mechanism portion for driving the attachment / detachment portion in conjunction with each other. An operation shaft that is rotated via a handle and a gear that is rotated by the rotation of the operation shaft. It is moved left and right, back and forth via two toothless gears each lacking some of its teeth that are synchronously rotated in opposite directions, and a pin that is moved around the guide cam by the operating shaft. A slider for holding the connector holding portion, and the first connector sealing plug and the second connector base portion are attached and detached at the first rotation by rotating the handle in one direction by a predetermined angle. Rotated in one direction via the missing gear Separating each from the first connector source portion and the second connector sealing plug Te, relatively the connector holding portion and the detachable portion at a second rotation by a predetermined angular rotation further in one direction the handle The first connector base and the second connector base are opposed to each other through a slider, and the handle is further rotated by a predetermined angle in one direction with the first connector base and the first connector base. In the connector attaching / detaching device in which the first to third rotations are one operation, and the second connector base part is screwed and fastened in the opposite direction via the toothless gear,
An intermittent rotation transmission means and a positioning mechanism for stopping and fixing the synchronous rotation of the detachable portion during the second rotation are provided, and the intermittent rotation transmission means is integrated with at least one of the two toothless gears. When the cam is meshed with each tooth portion of the two toothless gears and is integrally provided with a gear that transmits the rotational force to the detachable portion, the gear is not meshed with the both toothless gears. And another cam that is configured to slide in contact with the cam and maintain the rotational position of the gear, and the positioning mechanism rotates integrally with the gear that transmits the rotational force to the detachable portion. And the gear is engaged with the recess formed on the cam surface of the further cam at a timing at which the gear does not mesh with the two gears, so that the gear and the detachable portion connected thereto are held in position. Plunger Connector desorption apparatus characterized by being configured from. A connector holding portion for holding the first connector base and the second connector sealing plug, a detachable portion for holding and rotating the first connector sealing plug and the second connector base, and A connector holding portion and a mechanism portion for driving the attachment / detachment portion in conjunction with each other. An operation shaft that is rotated via a handle and a gear that is rotated by the rotation of the operation shaft. It is moved left and right, back and forth via two toothless gears each lacking some of its teeth that are synchronously rotated in opposite directions, and a pin that is moved around the guide cam by the operating shaft. A slider for holding the connector holding portion, and the first connector sealing plug and the second connector base portion are attached and detached at the first rotation by rotating the handle in one direction by a predetermined angle. Rotated in one direction via the missing gear Separating each from the second connector sealing plug and the first connector source portion Te, relatively the connector holding portion and the detachable portion at a second rotation by a predetermined angular rotation to further one direction the handle The first connector base portion is moved by a third rotation that moves through the slider, causes the first connector base portion and the first connector sealing plug to face each other, and further rotates the handle in one direction by a predetermined angle. The first connector sealing plug and the first connector sealing plug are rotated in the opposite direction via the toothless gear and screwed and fastened.
An intermittent rotation transmission means and a positioning mechanism for stopping and fixing the synchronous rotation of the detachable portion during the second rotation are provided, and the intermittent rotation transmission means is integrated with at least one of the two toothless gears. When the cam is meshed with each tooth portion of the two toothless gears and is integrally provided with a gear that transmits the rotational force to the detachable portion, the gear is not meshed with the both toothless gears. And another cam that is configured to slide in contact with the cam and maintain the rotational position of the gear, and the positioning mechanism rotates integrally with the gear that transmits the rotational force to the detachable portion. And the gear is engaged with the recess formed on the cam surface of the further cam at a timing at which the gear does not mesh with the two gears, so that the gear and the detachable portion connected thereto are held in position. Plunger Connector desorption apparatus characterized by being configured from.