Indeflation device, syringe kit, and adapter

Abstract

In the present invention, an indeflation device comprises a syringe kit provided with a syringe structure and an adapter, and a syringe-holding part for holding the syringe kit. The syringe structure is provided with: a flow passage tube; a syringe body having an opening communicating with the flow passage tube; and a switching valve provided to the flow passage tube, the switching valve being provided with an operation part for opening / closing or switching a flow passage by rotation. The syringe-holding part is provided with a drive part for rotating the switching valve, the drive part being connected to a fitting part that fits with the adapter in a state in which the syringe kit is held. The adapter assumes a form that fits with the fitting part and engages with the operation part. The syringe kit can be inserted into the syringe-holding part from one direction and attached to the syringe-holding part.

Description

Indeflation device, syringe kit, and adapter

[0001] The present disclosure relates to an indeflation device, a syringe kit, and an adapter.

[0002] When using a balloon catheter or a stent delivery system equipped with a balloon catheter, it is necessary to remove the air from the catheter and replace it with a contrast agent before expanding the balloon. This preparation is intended to ensure contrast during balloon expansion and to reduce the risk of air escaping if the balloon breaks inside the blood vessel.

[0003] It is known to perform such preparations manually, for example by manually removing air from the balloon catheter using a contrast-filled angioplasty balloon pressurizer or a syringe filled with a small amount of contrast, and then manually operating the pressurizer piston to inflate and deflate the balloon.

[0004] There are also known devices that automatically perform a series of operations using a balloon catheter, including the above-mentioned preparation operations and pressurization and depressurization. For example, Patent Document 1 describes a device that draws fluid from a reservoir into a pressurization unit, removes air from the balloon catheter, and injects fluid from the pressurization unit into the balloon to expand the balloon.

[0005] Patent Document 2 describes a technique for easily locking and unlocking a tube connector in a contrast medium injection device.

[0006] US Patent No. 8,758,294 JP 2021-112411 A

[0007] Conventional configurations for automating a series of operations using a balloon catheter, including preparation of the balloon catheter and pressurization and depressurization, have room for improvement in terms of the complexity of the device assembly operations.

[0008] An object of the present disclosure is to make it possible to easily assemble a device that automates a series of procedures using a balloon catheter.

[0009] According to the present disclosure, an indeflation device comprises: (1) a syringe kit having a syringe structure and an adapter, and a syringe holding portion that holds the syringe kit, wherein the syringe structure comprises: a flow path pipe; a syringe body having an opening that communicates with the flow path pipe; and a switching valve that is provided on the flow path pipe and has an operating portion for opening, closing, or switching the flow path by rotation, wherein the syringe holding portion has a drive portion for rotating the switching valve that is connected to a fitting portion that fits with the adapter when the syringe kit is held, and the adapter has a shape that engages with the operating portion and fits with the fitting portion, and the syringe kit can be attached to the syringe holding portion by inserting it into the syringe holding portion from one direction.

[0010] According to the present disclosure, the syringe kit is: (2) A syringe kit held by a syringe holding portion having a first drive portion that provides a driving force by a first fitting portion, the syringe kit comprising: a syringe structure and a first adapter, the syringe structure comprising: a first flow path pipe; a syringe body having a first opening communicating with the first flow path pipe; and a first switching valve provided on the first flow path pipe and having a first operation portion for opening, closing, or switching a flow path by rotation, the first adapter having a shape that engages with the first operation portion and fits with the first fitting portion, the syringe kit being attachable to the syringe holding portion by being inserted into the syringe holding portion from a predetermined insertion direction.

[0011] (3) In the syringe kit of (2), a second adapter may be further provided that engages with the first flow path tube and has a shape that fits into the storage portion of the syringe holding portion, and the syringe kit further including the second adapter may be attachable to the syringe holding portion by inserting it into the syringe holding portion from the insertion direction.

[0012] (4) In the syringe kit of (3), the first adapter and the second adapter may have a concave-convex shape provided along a direction corresponding to the insertion direction.

[0013] (5) In the syringe kit of any of (2) to (4), the syringe kit is held by the syringe holding portion, which further includes a second drive portion that provides a driving force by a second fitting portion, and further includes a third adapter, and the syringe structure further includes: a second flow path pipe; and a second switching valve provided on the second flow path pipe and including a second operation portion for opening, closing, or switching the flow path by rotation, the syringe body further includes a second opening communicating with the second flow path pipe, and the third adapter has a shape that engages with the second operation portion and fits into the second fitting portion, and the syringe kit further including the third adapter may be attached to the syringe holding portion by being inserted into the syringe holding portion from the insertion direction.

[0014] (6) In the syringe kit of (5), a fourth adapter may be further provided that engages with the second flow path tube and has a shape that fits into the storage portion of the syringe holding portion, and the syringe kit further including the fourth adapter may be attachable to the syringe holding portion by inserting it into the syringe holding portion from the insertion direction.

[0015] (7) In the syringe kit of (5) or (6), the syringe structure may include the first switching valve and the second switching valve at positions where they do not interfere with each other.

[0016] (8) In the syringe kit of (7), the syringe structure may include the first switching valve and the second switching valve at positions that are different in distance from the syringe body.

[0017] According to the present disclosure, the adapter is (9) an adapter attachable to a syringe structure held by a syringe holding portion having a first drive portion that provides a driving force by a first fitting portion, the syringe structure comprising: a first flow path tube; a syringe body having a first opening communicating with the first flow path tube; and a first switching valve provided on the first flow path tube and having a first operating portion for opening, closing, or switching a flow path by rotation, the first switching valve having a shape that engages with the first operating portion and fits into the first fitting portion, and the syringe structure with the adapter attached can be attached to the syringe holding portion by inserting it into the syringe holding portion from a predetermined insertion direction.

[0018] According to one embodiment of the present disclosure, a device for automating a series of operations using a balloon catheter can be easily assembled.

[0019] FIG. 1 is a schematic diagram showing an example of the configuration of an indeflation device according to one embodiment. FIG. 2 is a perspective view showing an example of the configuration of the syringe structure of FIG. 1. FIG. 3 is a perspective view showing an example of the configuration of a syringe structure to which a first adapter is attached. FIG. 4 is a perspective view showing an example of the configuration of a syringe kit as viewed from the direction of the second adapter. FIG. 5 is a perspective view showing an example of the configuration of a syringe kit connected to a motor. FIG. 6 is a top view showing an example of the configuration of a syringe kit held in a syringe holding section. FIG. 7 is a schematic diagram showing an example of the configuration of an indeflation device according to one embodiment. FIG. 8 is a schematic diagram showing an example of the configuration of an indeflation device according to one embodiment.

[0020] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. In each drawing, parts having the same configuration or function are denoted by the same reference numerals. In the description of this embodiment, duplicated descriptions of the same parts may be omitted or simplified as appropriate.

[0021] (Outline of inflation device 1) Figure 1 is a schematic diagram showing an example of the configuration of an inflation device 1 according to one embodiment. The inflation device 1 pressurizes or depressurizes the inside of a balloon catheter 50, which is a catheter according to this embodiment, by moving a fluid within the balloon catheter 50. The fluid injected into the balloon catheter 50 is, for example, a contrast medium, but may alternatively be any liquid or gas, such as saline, that is harmless when injected into the body.

[0022] Hereinafter, the person who uses the inflation device 1 and the balloon catheter 50 will be collectively referred to as the "user." The user is, for example, a medical professional including a doctor, a nurse, and a clinical engineer, and multiple people may operate the device as users.

[0023] As shown in FIG. 1 , the inflation device 1 includes a control device 10 , a pump 20 , a negative pressure source 30 , and a third switching valve 40 .

[0024] The control device 10 is a computer that controls the overall operation of the inflation device 1. In this embodiment, the control device 10 is communicatively connected to the actuators 23, 33, the first switching valve 26, the second switching valve 28, and the third switching valve 40, etc., and controls the operation of these components. However, some or all of the first switching valve 26, the second switching valve 28, and the third switching valve 40 may be manually switched by the user.

[0025] The pump 20 operates to inject a fluid into the balloon catheter 50. The pump 20 is connected to the third switching valve 40 via a first flow path 61. The first flow path 61 is configured, for example, by a pressure-resistant tube. In this embodiment, the pump 20 includes a syringe structure 70, a plunger 22, and an actuator 23. The pump 20 is a syringe pump (syringe) that delivers the fluid filled in the syringe body 21 into the balloon catheter 50 by the pressing action of the plunger 22.

[0026] The syringe structure 70 includes a syringe body 21, a first flow path tube 271, a second flow path tube 272, a first switching valve 26, a second switching valve 28, and a filter 25. The syringe body 21 stores a fluid to be delivered into the balloon catheter 50. The syringe body 21 has a first opening 211 communicating with the first flow path tube 271 and a second opening 212 communicating with the second flow path tube 272 (see FIG. 2 and the like for the first opening 211 and the second opening 212). The syringe body 21 is arranged so that the tip side on which the first opening 211 and the like are provided faces upward, and the first opening 211 is provided at the top of the inner wall of the syringe body 21. The first flow path tube 271 and the second flow path tube 272 are tubes through which fluid and air can move.

[0027] The first flow path pipe 271 is used to supply fluid from the reservoir 24 that stores the fluid to the syringe body 21, and to discharge air that has entered the syringe body 21 to the outside through the vent port 251 via the filter 25. The first flow path pipe 271 connects the syringe body 21 and the first switching valve 26. The first switching valve 26 can switch the flow path within the first switching valve 26 so that any two of the syringe body 21, the reservoir 24, and the vent port 251, which are connected via the first flow path pipe 271, communicate with each other. The filter 25 is used as an air vent. The filter 25 may be a hydrophobic filter selected from a material that allows air to pass through but not fluid to pass through.

[0028] The second flow path pipe 272 is used to supply the fluid stored in the syringe body 21 to the third switching valve 40 via the first flow path 61. The second flow path pipe 272 connects the syringe body 21 and the first flow path 61. The second switching valve 28 can switch between opening and closing the flow path formed by the second flow path pipe 272 and the first flow path 61.

[0029] The plunger 22 is provided in the syringe body 21 and is movable in the longitudinal direction of the syringe body 21. The actuator 23 serving as a drive unit provides a driving force for moving the plunger 22 within the movable range. For example, the actuator 23 may apply a load to the plunger 22 using the driving force of a driver such as a motor, thereby moving the plunger 22 in the longitudinal direction of the syringe body 21. The actuator 23 is driven under the control of the control device 10.

[0030] The negative pressure source 30 operates to apply negative pressure to the balloon catheter 50. The negative pressure source 30 is connected to the third switching valve 40 via a second flow path 62.

[0031] In this embodiment, the negative pressure source 30 includes a syringe body 31, a plunger 32, and an actuator 33. In this embodiment, the negative pressure source 30 is a syringe pump that applies negative pressure to a second flow path 62 connected to the syringe body 31 by pulling the plunger 22 inside the syringe body 31.

[0032] The syringe body 31 has a third opening communicating with the second flow path 62. The plunger 32 is provided in the syringe body 31 and is movable in the longitudinal direction of the syringe body 31. The actuator 33 provides a driving force for moving the plunger 32 within the movable range. The actuator 33 is driven under the control of the control device 10. For example, the syringe body 31, the plunger 32, and the actuator 33 may have the same configuration as the syringe body 21, the plunger 22, and the actuator 23 of the pump 20.

[0033] The third switching valve 40 has a first port connected to the pump 20 via a first flow path 61, a second port connected to the negative pressure source 30 via a second flow path 62, and a third port to which the connection portion 53 of the balloon catheter 50 can be connected. The third switching valve 40 can switch the flow path communicating with the balloon catheter 50 connected to the third port between the first flow path 61 connected to the first port and the second flow path 62 connected to the second port.

[0034] The balloon catheter 50 has a configuration in which a balloon 51 that expands or contracts in response to internal pressure is attached to the distal portion of a hollow tube 52. The balloon catheter 50 is inserted into the patient's body. The balloon catheter 50 can be connected to the third port of the first switching unit 40 via a connection unit 53. After the balloon 51 is positioned at the target position, the inflation device 1 expands or contracts the balloon 51 by pressurizing or depressurizing the balloon catheter 50. The balloon catheter 50 may be a disposable item that is discarded after a single use. In this embodiment, the inflation device 1 expands or contracts the balloon catheter 50 having the balloon 51 attached to its distal portion, but the target of processing by the inflation device 1 may be a catheter other than the balloon catheter 50.

[0035] In the above-described configuration, the inflation device 1 executes the following series of operations by controlling the operations of the first switching valve 26, the second switching valve 28, the third switching valve 40, and the actuators 23 and 33 using the control device 10: (1) Filling the syringe body 21 with fluid from the reservoir 24 (operation a); (2) Discharging air mixed in the syringe body 21 (operation b); (3) Filling the first flow path 61 with fluid from the syringe body 21 (operation c); (4) Removing air from the balloon catheter 50 (operation d); (5) Injecting fluid into the balloon catheter 50 (operation e); and (6) Pressurizing and depressurizing the balloon catheter 50 (operation f).

[0036] An outline of a series of operations a to f will be described. As a prerequisite for these operations, the plunger 22 of the pump 20 is inserted to the deepest part of the syringe body 21. The plunger 32 of the negative pressure source 30 is inserted to the deepest part of the syringe body 31. The balloon catheter 50 is not connected to the third switching valve 40.

[0037] In this state, the control device 10 controls the first switching valve 26 to connect the syringe body 21 and the reservoir 24, and controls the second switching valve 28 to close the second flow path pipe 272. Then, the control device 10 causes the actuator 23 to pull the plunger 22, thereby moving the fluid from the reservoir 24 into the syringe body 21 (operation a).

[0038] Next, control device 10 controls first switching valve 26 to connect syringe body 21 with vent port 251, and then causes actuator 23 to perform the operation of pushing plunger 22. Because first opening 211 is provided at the top of the inner wall of syringe body 21, air inside syringe body 21 collects near first opening 211. Because filter 25 is made of a hydrophobic material, the air inside syringe body 21 is discharged through filter 25 by the operation of pushing plunger 22 (operation b).

[0039] After discharging the air from syringe body 21, control device 10 controls third selector valve 40 to connect the first port to the third port, controls first selector valve 26 to connect vent port 251 to reservoir 24, and controls second selector valve 28 to open second flow path pipe 272. Then, control device 10 causes actuator 23 to press plunger 22, thereby filling first flow path 61 with fluid (operation c).

[0040] After completing operation c, the user attaches the connecting portion 53 of the balloon catheter 50 to the third port of the third switching valve 40 .

[0041] The control device 10 controls the third switching valve 40 to connect the third port to which the balloon catheter 50 is attached and the second port to which the second flow path 62 is connected, and then causes the actuator 33 to pull the plunger 32. This removes the air from the balloon catheter 50 (operation d).

[0042] The control device 10 controls the third switching valve 40 to connect the third port to which the balloon catheter 50 is attached and the first port to which the first flow path 61 is connected, thereby injecting fluid into the balloon catheter 50. Thereafter, the control device 10 causes the actuator 23 to perform an operation to push the plunger 22 (operation e).

[0043] After completing operation e, the user inserts the balloon catheter 50, the air inside which has been replaced with fluid, or the balloon catheter 50 equipped with a stent, into a body vessel such as a patient's blood vessel, and causes the balloon 51 to reach a target position such as a lesion. For example, the user may align the balloon 51 while checking on a monitor an image taken by an X-ray camera capturing an image of the lesion. Once the user confirms that the balloon 51 has reached the target position, the user instructs the inflation device 1 to pressurize.

[0044] In response to a user instruction, the control device 10 causes the actuator 23 to push or pull the plunger 22 to pressurize or depressurize the balloon catheter 50 (operation f). When the user gives an instruction to end the operation, the control device 10 causes the actuator 23 to pull the plunger 22 to remove the fluid from the balloon catheter 50.

[0045] In this way, the inflation device 1 automatically performs the preparatory work of replacing the air in the balloon catheter 50 with fluid, as well as a series of operations including pressurization and depressurization, allowing the user to more efficiently perform operations involving the use of the balloon catheter 50.

[0046] On the other hand, since the inflation device 1 includes a syringe and multiple flow path switching valves (first switching valve 26, second switching valve 28), these need to be connected in order to install the inflation device 1. To power the flow path switching valves and automate flow path switching control, a mechanism is required to combine the power source and the flow path switching valves. Therefore, the work of assembling these components can be complicated. If a user, such as a medical professional, were to connect these components on-site, the workload could be extremely heavy.

[0047] In this embodiment, a structure including a syringe and a plurality of flow path switching valves is provided as a syringe kit 80 in which adapters (a first adapter 81, a second adapter 82, and a third adapter 83, which will be described later) are attached to a syringe structure 70. This makes it possible to easily attach the syringe and the plurality of flow path switching valves to the device main body (syringe holding portion 95) with few steps.

[0048] FIG. 2 is a perspective view showing an example of the configuration of the syringe structure 70 to which the second adapter 82 is attached. FIG. 3 is a perspective view showing an example of the configuration of the syringe kit 80. As described above, the tip of the syringe body 21 is provided with the first flow path pipe 271, which communicates via the first opening 211, and the second flow path pipe 272, which communicates via the second opening 212. In FIGS. 2 to 7, the X-axis and Y-axis indicate horizontal directions that are orthogonal to each other, and the Z-axis indicates the vertical direction. The syringe body 21 is provided along the X-axis, with the direction in which the first flow path pipe 271 and the second flow path pipe 272 are provided being the X-axis positive direction. The Z-axis positive direction corresponds to height.

[0049] The first flow path pipe 271 is provided with a first switching valve 26. The first switching valve 26 is connected to a filter 25 having an air vent 251 connected via a connector 274, a connection part 273 to which a reservoir 24 filled with fluid can be connected, and the syringe body 21 connected via the first flow path pipe 271. The first switching valve 26 allows two of these three paths to communicate with each other. The first switching valve 26 has an operating part 261 for switching the flow path by rotating it. As described above, the inflation device 1 can fill the syringe body 21 with fluid and discharge air from the syringe body 21 by controlling the switching of the first switching valve 26 and the displacement of the plunger 22 in the syringe body 21 in conjunction with each other.

[0050] A connector 275 to which a first flow path 61, such as a pressure-resistant tube, can be connected is provided at the tip of the second flow path pipe 272. A second switching valve 28 is provided in the second flow path pipe 272. The second switching valve 28 opens and closes the flow path between the opening 212 of the syringe body 21 and the connector 275. The second switching valve 28 has an operating unit 281 that opens and closes by rotating. After filling the second flow path pipe 272 from the syringe body 21 with fluid, opening the second switching valve 28 allows the fluid to be supplied to the balloon catheter 50 via the first flow path 61 connected to the connector 275.

[0051] 2, a second adapter 82 is attached to the syringe structure 70 so as to fit with the first switching valve 26, the second switching valve 28, the first flow path pipe 271, and the second flow path pipe 272. The second adapter 82 integrates the syringe body 21 (including the first flow path pipe 271 and the second flow path pipe 272), the first switching valve 26, and the second switching valve 28, making it easy to attach them to the main body of the inflation device 1.

[0052] 3, a first adapter 81 and a third adapter 83 are attached to facilitate switching of the operation part 261 of the first switching valve 26 and the operation part 281 of the second switching valve 28 by a motor. The first adapter 81 is attached onto the operation part 261 of the first switching valve 26, and the third adapter 83 is attached onto the operation part 281 of the second switching valve 28.

[0053] The syringe structure 70 includes the first switching valve 26 and the second switching valve 28 at positions where they do not interfere with each other, allowing for complex control by providing multiple switching valves. Specifically, as shown in FIGS. 2 and 3 , the lengths of the first flow path pipe 271 and the second flow path pipe 272, i.e., the length from the first opening 211 to the first switching valve 26 and the length from the second opening 212 to the second switching valve 28, are different. In this manner, the syringe structure 70 includes the first switching valve 26 and the second switching valve 28 at positions that are different distances from the syringe body 21. By offsetting the positions of the first switching valve 26 and the second switching valve 28 by the distance from the syringe body 21, it is possible to prevent interference between the rotational operations of the first switching valve 26 and the second switching valve 28 while minimizing the height of the syringe structure 70. In the example of Figure 3, the second switching valve 28 has a connector 275 for connecting the first flow path 61, so in order to facilitate the connection work of the first flow path 61, it is preferable that the second flow path pipe 272 be longer than the first flow path pipe 271.

[0054] The second adapter 82 has a protrusion 821 on its outer side, which engages with a recess in the storage section 951 of the syringe holding section 95. Similarly, the first adapter 81 and the third adapter 83 have protrusions 811, 831 on their outer sides, which engage with the connectors 911, 921 of the motors 91, 92 of the syringe holding section 95.

[0055] Fig. 4 is a perspective view showing an example of the configuration of syringe kit 80 as viewed from the direction of second adapter 82. Fig. 5 is a perspective view showing an example of the configuration of syringe kit 80 connected to motors 91 and 92. Fig. 6 is a top view showing an example of the configuration of syringe kit 80 held in syringe holding portion 95. Fig. 7 is a perspective view showing an example of the configuration of syringe kit 80 held in syringe holding portion 95.

[0056] As shown in FIGS. 3 and 4 , in this embodiment, the convex portion 811 of the first adapter 81, the convex portion 821 of the second adapter 82, and the convex portion 831 of the third adapter 83 all have a convex shape along the Z-axis direction. As shown in FIGS. 6 and 8 , the syringe holding portion 95 includes a housing portion 951 that fits into the convex shape along the Z-axis direction of the syringe kit 80 and allows the syringe kit 80 to be assembled by sliding it from above (the positive direction of the Z-axis). This allows the user to easily set up the syringe kit 80. The convex and concave shapes of the first adapter 81, the second adapter 82, and the third adapter 83 are not limited to the shapes shown here. For example, instead of the convex portions 811, 821, and 831, the first adapter 81, the second adapter 82, and the third adapter 83 may have any shape that can engage with a concave portion or another member.

[0057] When the syringe kit 80 is accommodated in the accommodation portion 951 of the syringe holding portion 95, as shown in FIG. 5 , the convex portion 811 of the first adapter 81 fits into and engages with the concave portion of the connector 911 of the motor 91 provided in the syringe holding portion 95. The convex portion 831 of the third adapter 83 fits into and engages with the concave portion of the connector 921 of the motor 92 provided in the syringe holding portion 95. The entire syringe kit 80 including the first adapter 81 and the third adapter 83 is fitted into the concave portion of the accommodation portion 951 of the syringe holding portion 95, as shown in FIGS. 6 and 7 . Therefore, even if the motor 91 rotates the operation portion 261 of the first switching valve 26 via the connector 911 and the first adapter 81, the reaction force of the motor 91 is received, and movement of the integrated parts is suppressed. Similarly, even if the motor 92 rotates the operating part 281 of the second switching valve 28 via the connector 921 and the third adapter 83, the reaction force of the motor 92 is received and the movement of the integrated parts is suppressed.

[0058] As described above, the indeflation device 1 includes the syringe kit 80 including the syringe structure 70 and adapters (first adapter 81, third adapter 83), and the syringe holder 95 that holds the syringe kit 80. The syringe structure 70 includes flow path pipes (first flow path pipe 271, second flow path pipe 272), the syringe body 21, and switching valves (first switching valve 26, second switching valve 28). The syringe body 21 has openings (first opening 211, second opening 212) that communicate with the flow path pipes (first flow path pipe 271, second flow path pipe 272). The switching valves (first switching valve 26, second switching valve 28) have operating units 261, 281 that are provided in the flow path pipes (first flow path pipe 271, second flow path pipe 272) and that rotate to open, close, or switch the flow path. The syringe holding portion 95 includes motors 91, 92 as drive units for rotating the switching valves (first switching valve 26, second switching valve 28) connected to connectors 911, 921 as fitting units that fit with the adapters (first adapter 81, third adapter 83) when the syringe kit 80 is held therein. The adapters (first adapter 81, third adapter 83) engage with the operation units 261, 281 and have shapes that fit with the connectors 911, 921. The syringe kit 80 can be attached to the syringe holding portion 95 by inserting it into the syringe holding portion 95 from one direction (for example, a direction parallel to the Z-axis).

[0059] In this way, syringe kit 80 can be attached to syringe holding portion 95 by inserting it into syringe holding portion 95 from one direction. When syringe kit 80 is attached to syringe holding portion 95, adapters (first adapter 81, third adapter 83) and connectors 911, 921 are fitted together, making it possible to rotate the switching valves (first switching valve 26, second switching valve 28) using motors 91, 92. Therefore, the user can easily install syringe kit 80 in inflation device 1 by simply inserting syringe kit 80, with adapters (first adapter 81, third adapter 83) attached to syringe structure 70, into syringe holding portion 95.

[0060] The syringe kit 80 is held by a syringe holding portion 95 that includes a motor 91 as a first drive portion that provides driving force via a connector 911. The syringe kit 80 includes a syringe structure 70 and a first adapter 81. The syringe structure 70 includes a syringe body 21 that has a first flow path pipe 271 and a first opening 211 that communicates with the first flow path pipe 271, and a first switching valve 26 that is provided on the first flow path pipe 271 and includes an operation portion 261 that opens, closes, or switches the flow path by rotating. The first adapter 81 engages with the operation portion 261 and has a shape that fits with the connector 911. The syringe kit 80 can be attached to the syringe holding portion 95 by inserting it into the syringe holding portion 95 from a predetermined insertion direction.

[0061] In this way, syringe kit 80 can be attached to syringe holding portion 95 by inserting it into syringe holding portion 95 from one direction. When syringe kit 80 is attached to syringe holding portion 95, first adapter 81 and connector 911 are fitted together, making it possible to rotate first switching valve 26 using motor 91. Therefore, the user can easily install syringe kit 80 in inflation device 1 by simply attaching first adapter 81 to syringe structure 70 and inserting it into syringe holding portion 95.

[0062] Furthermore, the syringe kit 80 may further include a second adapter 82 that engages with the first flow path tube 271 and has a shape that fits into the accommodation portion 951 of the syringe holding portion 95. The syringe kit 80 that further includes the second adapter 82 may be attachable to the syringe holding portion 95 by inserting it into the syringe holding portion 95 from the insertion direction.

[0063] In this way, second adapter 82 engages with first flow path pipe 271 in which first switching valve 26 is provided, and fits into storage portion 951 of syringe holding portion 95. Therefore, storage portion 951 and second adapter 82 receive the reaction force caused by the rotation of motor 91, enabling stable switching of first switching valve 26 and suppressing unnecessary movement of each integrated component.

[0064] Furthermore, the first adaptor 81 and the second adaptor 82 may have a concave-convex shape provided along a direction corresponding to the insertion direction (for example, a direction parallel to the Z axis).

[0065] In this way, first adapter 81 and second adapter 82 have a concave-convex shape that is provided along the direction corresponding to the insertion direction, so that the user can easily attach syringe kit 80, to which first adapter 81 and second adapter 82 are attached, to syringe holding portion 95.

[0066] The syringe kit 80 may be held by a syringe holding portion 95 further including a motor 92 as a second drive portion that provides driving force via a connector 921 as a second fitting portion. The syringe kit 80 may further include a third adapter 83. The syringe structure 70 may further include a second flow path pipe 272 and a second switching valve 28 provided on the second flow path pipe 272 and including an operation portion 281 for opening, closing, or switching the flow path by rotation. The syringe body 21 may further include a second opening 212 that communicates with the second flow path pipe 272. The third adapter 83 may have a shape that engages with the operation portion 281 of the second switching valve 28 and fits with the connector 921. The syringe kit 80 further including the third adapter 83 may be attachable to the syringe holding portion 95 by being inserted into the syringe holding portion 95 from an insertion direction (e.g., a direction parallel to the Z-axis).

[0067] In this way, even if the syringe structure 70 has two flow path pipes (first flow path pipe 271, second flow path pipe 272), the user can easily install the syringe kit 80 in the inflation device 1 by simply attaching an adapter (first adapter 81, third adapter 83) to each flow path pipe and inserting it into the syringe holding portion 95.

[0068] Furthermore, syringe kit 80 may further include a fourth adapter (common to second adapter 82) that engages with second flow path tube 272 and has a shape that fits into storage portion 951 of syringe holding portion 95. Syringe kit 80 that further includes the fourth adapter may be attachable to syringe holding portion 95 by inserting it into syringe holding portion 95 from the insertion direction.

[0069] In this manner, the fourth adapter engages with the second flow path pipe 272 provided with the second switching valve 28, and fits into the accommodation portion 951 of the syringe holder 95. Therefore, the syringe holder 95 and the fourth adapter receive the reaction force caused by the rotation of the motor 92, enabling stable switching of the second switching valve 28 and suppressing unnecessary movement of the integrated components. As shown in FIG. 4 , in the present embodiment, the fourth adapter is provided as a component integrated with the second adapter 82, but the fourth adapter may also be provided as a component separate from the second adapter 82.

[0070] Furthermore, the syringe structure 70 may include the first switching valve 26 and the second switching valve 28 in positions where they do not interfere with each other.

[0071] In this way, the first switching valve 26 and the second switching valve 28 are provided in positions where they do not interfere with each other, so that it is possible to provide a plurality of switching valves and perform complex control.

[0072] Specifically, as shown in FIGS. 1 to 7, the syringe structure 70 may include the first switching valve 26 and the second switching valve 28 at positions that are different in distance from the syringe body 21 .

[0073] In this way, by shifting the positions of the first switching valve 26 and the second switching valve 28 in terms of the distance from the syringe body 21, it is possible to reduce the height of the syringe.

[0074] 1 to 7 show an example in which the first switching valve 26 and the second switching valve 28 are provided at positions that are different distances from the syringe body 21, but the arrangement of the first switching valve 26 and the second switching valve 28 is not limited to this. Figures 8 to 10 are schematic diagrams showing an example of the configuration of the inflation device 1 according to one embodiment.

[0075] For example, as in pump 20a in FIG. 8, if the inner diameter of syringe body 21 is sufficiently large so that first switching valve 26 and second switching valve 28 do not interfere with each other even when they are provided at the same X coordinate position, first switching valve 26 and second switching valve 28 may be provided at the same X coordinate position without shifting their positions in the X-axis direction.

[0076] Furthermore, if the first switching valve 26 and the second switching valve 28 interfere with each other when they are provided at the same X coordinate position, the first flow path pipe 271 provided with one of the switching valves (first switching valve 26 in the example of pump 20b in FIG. 9) may be diverted in the Z-axis direction or Y-axis direction, etc. Alternatively, instead of providing the operating units 261 and 281 in the same direction (the positive Y-axis direction in the example of FIG. 2) as shown in FIG. 2, the operating unit 261 may be provided in the positive Z-axis direction relative to the first switching valve 26 and the operating unit 281 in the negative Z-axis direction relative to the second switching valve 28, so that the operating units 261 and 281 do not interfere with each other.

[0077] Furthermore, although the above description has been given of an example of the configuration of the syringe kit 80 in which multiple flow path pipes (first flow path pipe 271, second flow path pipe 272) are provided to the syringe body 21, the present invention is not limited to this. For example, the syringe kit 80 may be configured to include one flow path pipe 277, as in the pump 20c of FIG. 10. Alternatively, for example, the syringe kit 80 may be configured to include one flow path pipe and no flow path switching valve, as in the negative pressure source 30 of FIG. 1.

[0078] The first adapter 81 is an adapter that can be attached to a syringe structure 70 held by a syringe holding portion 95 that includes a motor 91 that provides driving force via a connector 911. The syringe structure 70 includes a first flow path pipe 271, a syringe body 21 that has a first opening 211 that communicates with the first flow path pipe 271, and a first switching valve 26 that is provided on the first flow path pipe 271 and includes an operation portion 261 that opens, closes, or switches the flow path by rotating. The first adapter 81 has a shape that engages with the operation portion 261 and fits with the connector 911. The syringe structure 70 with the first adapter 81 attached can be attached to the syringe holding portion 95 by inserting it into the syringe holding portion 95 from a predetermined insertion direction (e.g., a direction parallel to the Z axis).

[0079] In this way, syringe structure 70 with first adapter 81 attached can be attached to syringe holding portion 95 by inserting it into syringe holding portion 95 from one direction. When syringe structure 70 is attached to syringe holding portion 95, first adapter 81 and connector 911 are fitted together, making it possible to rotate first switching valve 26 using motor 91. Therefore, a user can easily install syringe structure 70 in inflation device 1 by simply attaching first adapter 81 to syringe structure 70 and inserting it into syringe holding portion 95.

[0080] As described above, the syringe kit 80 according to this embodiment is equipped with an adapter that connects the syringe and the flow path switching valve and has a shape that allows it to be combined with the syringe holding portion 95. Some of the adapters attached to the flow path switching valve can be combined with the moving part of the motor to transmit power. The syringe kit 80 has a shape that allows it to be inserted into the syringe holding portion 95 from one direction.

[0081] Therefore, the syringe and the flow path switching valve integrated member can be easily set in the syringe holding portion 95 by simply inserting it from one direction. In addition, the flow path switching valve is combined with a motor via an adapter, and by transmitting power, the operation of the flow path switching valve can be controlled as desired.

[0082] The present disclosure is not limited to the above-described embodiments, and modifications are possible within the scope of the present disclosure.

[0083] 1 Inflation device 10 Control device 20 Pump 21 Syringe body 211 First opening 212 Second opening 22 Plunger 23 Actuator 24 Reservoir 25 Filter 251 Vent 26 First switching valve 261 Operating unit 271 First flow path pipe 272 Second flow path pipe 273 Connection unit 274, 275 Connector 277 Flow path pipe 28 Second switching valve 281 Operating unit 30 Negative pressure source 31 Syringe body 32 Plunger 33 Actuator 40 Third switching valve 50 Balloon catheter 51 Balloon 52 Tube 53 Connection unit 61 First flow path 62 Second flow path 70 Syringe structure 80 Syringe kit 81 First adapter 811 Convex portion 82 Second adapter 821 Protrusion 83 Third adapter 831 Protrusion 91, 92 Motor 911, 921 Connector 95 Cylinder holding portion 951 Storage portion

Claims

1. An inflation device comprising: a syringe kit having a syringe structure and an adapter; and a syringe holding part that holds the syringe kit, wherein the syringe structure comprises: a flow path pipe; a syringe body having an opening that communicates with the flow path pipe; and a switching valve provided on the flow path pipe and having an operating part for opening, closing, or switching a flow path by rotation, wherein the syringe holding part has a drive part for rotating the switching valve, connected to a fitting part that fits with the adapter when the syringe kit is held, wherein the adapter engages with the operating part and has a shape that fits with the fitting part, and wherein the syringe kit can be attached to the syringe holding part by inserting it into the syringe holding part from one direction.

2. A syringe kit held by a syringe holding part having a first drive part that provides a drive force by a first fitting part, comprising: a syringe structure and a first adapter, wherein the syringe structure comprises: a first flow path pipe; a syringe body having a first opening that communicates with the first flow path pipe; and a first switching valve provided on the first flow path pipe and having a first operation part for opening, closing, or switching a flow path by rotation, wherein the first adapter has a shape that engages with the first operation part and fits into the first fitting part, and wherein the syringe kit can be attached to the syringe holding part by being inserted into the syringe holding part from a predetermined insertion direction.

3. A syringe kit as described in claim 2, further comprising a second adapter that engages with the first flow path tube and has a shape that fits into the storage portion of the syringe holding portion, and the syringe kit further comprising the second adapter can be attached to the syringe holding portion by inserting it into the syringe holding portion from the insertion direction.

4. The syringe kit according to claim 3, wherein the first adapter and the second adapter have a concave-convex shape provided along a direction corresponding to the insertion direction.

5. A syringe kit according to any one of claims 2 to 4, wherein the syringe kit is held by the syringe holding portion, which further comprises a second drive portion that provides a drive force by a second fitting portion, and further comprises a third adapter, wherein the syringe structure further comprises: a second flow path pipe; and a second switching valve provided on the second flow path pipe, which has a second operating portion for opening, closing, or switching the flow path by rotation, wherein the syringe body further has a second opening that communicates with the second flow path pipe, and the third adapter has a shape that engages with the second operating portion and fits into the second fitting portion, and the syringe kit further comprising the third adapter can be attached to the syringe holding portion by inserting it into the syringe holding portion from the insertion direction.

6. A syringe kit as described in claim 5, further comprising a fourth adapter that engages with the second flow path tube and has a shape that fits into the storage portion of the syringe holding portion, and the syringe kit further comprising the fourth adapter can be attached to the syringe holding portion by inserting it into the syringe holding portion from the insertion direction.

7. The syringe kit according to claim 5, wherein the syringe structure includes the first switching valve and the second switching valve in positions where they do not interfere with each other.

8. The syringe kit according to claim 7, wherein the syringe structure includes the first switching valve and the second switching valve at positions that are different distances from the syringe body.

9. An adapter that can be attached to a syringe structure held by a syringe holding part that has a first drive part that provides a drive force by a first fitting part, wherein the syringe structure comprises: a first flow path pipe; a syringe body having a first opening that communicates with the first flow path pipe; and a first switching valve that is provided on the first flow path pipe and has a first operation part for opening, closing, or switching a flow path by rotation, the first switching valve having a shape that engages with the first operation part and fits into the first fitting part, and the syringe structure with the adapter attached can be attached to the syringe holding part by inserting it into the syringe holding part from a predetermined insertion direction.

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