CN115531714A

CN115531714A - Fluid control mechanism

Info

Publication number: CN115531714A
Application number: CN202211305330.2A
Authority: CN
Inventors: 祁远东; 欧永红
Original assignee: Shenzhen Aibo Medical Robot Co Ltd
Current assignee: Shenzhen Aibo Medical Robot Co Ltd
Priority date: 2022-10-24
Filing date: 2022-10-24
Publication date: 2022-12-30

Abstract

The embodiment of the application belongs to the field of medical instruments and relates to a fluid control mechanism. The fluid control mechanism includes: the device comprises a shell, a first control valve and a second control valve, wherein a first passage and a second passage which are communicated with each other are arranged in the shell, the shell comprises a connecting part and a leakage-proof part which are connected with the first passage, and at least two fluid input parts which are connected with the second passage, the connecting part is externally connected with a catheter, and a guide wire can penetrate through the leakage-proof part and can seal one end of the first passage, which is far away from the connecting part; the first control valve is arranged at one end of the first passage close to the leakage-proof part and used for controlling the communication between the first passage and the leakage-proof part; the second control valve is arranged at one end of the second passage, which is close to the fluid input part, and is used for controlling the communication between the second passage and any one fluid input part. The switching of high pressure fluid and low pressure flow can be realized through the action of control first control valve and second control valve to this application, realizes automaticly, shortens operation time, reduces patient's expenditure and burden.

Description

Fluid control mechanism

Technical Field

The present application relates to the field of medical device technology, and more particularly, to a fluid control mechanism.

Background

In the prior art, a Y-shaped valve with a blood stopping function and two multi-connection and multi-way accessories are generally connected with each other to realize fluid management, wherein the fluid comprises but is not limited to hand-pushed smoking contrast solution, constant-pressure instillation heparin water, high-pressure contrast solution and the like; when the Y-type valve is used for radiography, the Y-type valve and the multi-way valve need to be detached to directly connect the pressure extension pipe of the high-pressure injector to the catheter seat. The prior art has the defects of long connection time, complex control mode and difficulty in realizing automation through an interventional operation robot when high-pressure contrast fluid is switched in the operation process due to the fact that a plurality of connecting accessories are arranged in the prior art.

Disclosure of Invention

The embodiment of the application provides a fluid control mechanism, which is used for solving the problems that in the prior art, when a plurality of connecting accessories of a fluid control structure are used, high-pressure contrast fluid is switched in the operation process, the connection time is long, the control mode is complex, and automation is difficult to realize through an interventional operation robot.

In order to solve the above technical problem, an embodiment of the present application provides a fluid control mechanism, which adopts the following technical solutions:

a fluid control mechanism comprising: the guide wire sealing device comprises a shell, a first control valve and a second control valve, wherein a first passage and a second passage which are communicated with each other are arranged in the shell, the shell comprises a connecting part and a leakage-proof part which are connected with the first passage, and at least two fluid input parts which are connected with the second passage, the connecting part is externally connected with a guide pipe, and a guide wire can penetrate through the leakage-proof part and can seal one end of the first passage, which is far away from the connecting part;

the first control valve is arranged at one end of the first passage close to the leakage-proof part and is used for controlling the communication between the first passage and the leakage-proof part so as to seal the leakage-proof part; the second control valve is arranged at one end of the second passage close to the fluid input part and is used for controlling the communication between the second passage and any one fluid input part.

Furthermore, a first mounting hole close to the leakage-proof portion is formed in the shell, the first mounting hole is communicated with the first passage, the first control valve comprises a first driving portion and a first switch arranged on the first driving portion, the first switch penetrates through the first mounting hole to enter the first passage, and the first driving portion is used for controlling the first switch to open and close one end, close to the leakage-proof portion, of the first passage.

Further, the first switch is rotatably arranged in the first passage; the first switch is provided with a first cavity which penetrates through two sides of the first switch, the first driving part is used for driving the first switch to rotate, and the first cavity is controlled to be communicated with the first passage so as to control the opening and closing of one end, close to the leakage-proof part, of the first passage.

Furthermore, a detection device is arranged in the first cavity, and the detection device is used for detecting whether the guide wire is positioned in the first cavity or not; when the detection device detects that the guide wire exits from the first cavity, the first driving part controls the first switch to move, so that the cavity opening of the first cavity rotates towards the wall body of the shell, and the first passage is sealed at one end close to the leakage-proof part.

Further, the first driving portion is used for driving the first switch to move towards or away from the first passage, and the first switch enters and exits the first passage through the first mounting hole so as to control opening and closing of one end, close to the leakage-proof portion, of the first passage.

Furthermore, a second mounting hole which is close to the fluid input part is formed in the shell, the second mounting hole is communicated with the second channel, the second control valve comprises a second driving part and a second switch which is arranged on the second driving part, the second switch penetrates through the second mounting hole to enter the second channel, a second cavity which penetrates through the second switch from the side wall of the second switch to one end far away from the second driving part is formed in the second switch, and the second driving part is used for controlling the second switch to open and close the fluid input part.

Further, a plurality of the fluid input parts are arranged around the periphery of the shell at intervals, and the second driving part is used for driving the second switch to rotate and controlling the communication between the second cavity and one of the fluid input parts.

Further, a plurality of the fluid input parts are arranged on the outer wall of the shell at intervals in parallel, and the second driving part is used for controlling the second switch to move towards or away from the second passage so as to control the communication between the second cavity and one of the fluid input parts.

Furthermore, the fluid control mechanism further comprises a limiting structure, the limiting structure comprises a limiting protrusion and a limiting groove, one of the limiting protrusion and the limiting groove is arranged at one end of the second switch far away from the second driving part, the other end of the second switch is arranged at one end of the shell close to the fluid input part, and the limiting protrusion is slidably arranged in the limiting groove.

Further, the housing comprises a first pipeline and a second pipeline which are communicated with each other, the first passage is positioned in the first pipeline, the connecting part and the leakage-proof part are positioned at two ends of the first pipeline, and the first control valve is connected with one end of the first pipeline, which is close to the leakage-proof part; the second passage is located in the second pipeline, the fluid input portion is located on the outer wall of the second pipeline, and the second control valve is connected with one end, close to the fluid input portion, of the second pipeline.

Compared with the prior art, the embodiment of the application mainly has the following beneficial effects: the Y-shaped valve and the multi-connection multi-way are reduced, and when the Y-shaped valve and the multi-connection multi-way are injected by adopting the Y-shaped valve, a doctor does not need to install and disassemble the Y-shaped valve and the multi-connection multi-way; when the second control valve controls the second passage to be communicated with the fluid input part connected with the low-pressure injector, the first control valve controls the communication of the first passage and the leakage-proof part, a channel formed by the communication of the leakage-proof part, the first passage and the connecting part can be used for a guide wire controlled by the interventional operation robot to move and/or rotate along an axis, and the leakage-proof part seals low-pressure fluid to ensure that the low-pressure fluid only flows through the fluid input part, the first passage and the connecting part; when the second control valve controls the second passage to be communicated with the fluid input part connected with the high-pressure injector, the first control valve seals one end of the first passage close to the leakage-proof part, so that the risk that the leakage-proof part is broken by high-pressure fluid and the radiography fails is avoided, the communication of the fluid input part, the second passage and the connecting part is also ensured, and the circulation of the high-pressure fluid is realized; the application is easy to realize automation through an interventional operation robot, the operation time is shortened through automatic control, the patient expenditure is reduced, and the burden of the patient is lightened.

Drawings

In order to illustrate the solution of the present application more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.

FIG. 1 is a schematic structural diagram of a fluid control mechanism according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is a perspective view of FIG. 1;

FIG. 5 is a schematic diagram of the first control valve of FIG. 1;

fig. 6 is a schematic structural view of the second control valve of fig. 1.

Reference numerals: 1. a housing; 11. a first mounting hole; 12. a second mounting hole; 13. a first conduit; 14. a second conduit; 15. an insertion opening; 2. a first control valve; 21. a first driving section; 22. a first switch; 23. a first channel; 24. a right-angle bending section; 3. a second control valve; 31. a second driving section; 32. a second switch; 33. a second channel; 34. rotating the boss; 4. a first path; 5. a second path; 6. a connecting portion; 61. a rotating member; 62. sealing gaskets; 7. a leakage prevention section; 71. a bonnet; 8. a fluid input; 9. a limiting structure; 91. a limiting bulge; 92. and a limiting groove.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the foregoing drawings are used for distinguishing between different objects and not for describing a particular sequential order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

An embodiment of a fluid control mechanism:

in an embodiment of the present application, as shown in fig. 1 to 4, a fluid control mechanism includes: the device comprises a shell 1, a first control valve 2 and a second control valve 3, wherein a first passage 4 and a second passage 5 which are communicated with each other are arranged in the shell 1, the shell 1 comprises a connecting part 6 and a leakage-proof part 7 which are connected with the first passage 4, and at least two fluid input parts 8 which are connected with the second passage 5, the connecting part 6 is externally connected with a catheter, and the leakage-proof part 7 can be used for a guide wire to pass through and can seal one end of the first passage 4, which is far away from the connecting part 6;

the first control valve 2 is arranged at one end of the first passage 4 close to the leakage-proof part 7, and the first control valve 2 is used for controlling the communication between the first passage 4 and the leakage-proof part 7 so as to seal the leakage-proof part 7; the second control valve 3 is disposed at one end of the second passage 5 adjacent to the fluid input portion 8, and the second control valve 3 is used for controlling the communication between the second passage 5 and any one of the fluid input portions 8.

The first working principle of the fluid control mechanism provided by the embodiment of the application is as follows: fluid input portion 8 can be connected with high pressure syringe, low pressure syringe etc. in this application, connecting portion 6 and pipe trailing end connection, and first control valve 2 and second control valve 3 are connected with the power supply, intervene the action of surgical robot through first control valve 2 of power supply control and second control valve 3.

At the beginning, the interventional operation robot firstly controls the first control valve 2 to act (rotate or move) to enable the first passage 4 to be communicated with the leakage-proof part 7, and controls the second control valve 3 to act (rotate or move) to enable the second passage 5 to be communicated with the fluid input part 8 connected with the low-pressure injector, so that the leakage-proof part 7, the first passage 4, the second passage 5, the fluid input part 8 and the connecting part 6 are communicated; as shown in fig. 2, at this time, the interventional surgical robot controls the guide wire to enter from the leakage-proof part 7, the first passage 4 and the connecting part 6 form a channel for the guide wire to move and/or rotate along the axis, and the leakage-proof part 7 seals the first passage 4 to prevent low-pressure fluid from leaking from the leakage-proof part 7; the low pressure fluid enters the catheter through the fluid input 8 to which the low pressure syringe is connected, the second passage 5 and the connection 6, and the low pressure fluid (e.g., heparin saline) is circulated.

The interventional operation robot further controls the catheter and the guide wire to move in the blood vessel of the patient until the catheter and the guide wire are delivered to the target position, and controls the second control valve 3 to act (rotate or move) so that the second passage 5 is communicated with the other fluid input part 8 connected with the low-pressure injector; at this time, the interventional surgical robot maintains and controls the first control valve 2 to maintain the current state, and causes the first passage 4 to communicate with the leakage preventing part 7, thereby causing the leakage preventing part 7, the first passage 4, the second passage 5, the fluid input part 8, and the connecting part 6 to communicate; as shown in fig. 2, the leak-proof part 7, the first passage 4 and the connecting part 6 are communicated to form a channel which still allows the guide wire to move and/or rotate along the axis, and the leak-proof part 7 seals the first channel 4 to prevent low-pressure fluid from leaking; the low pressure fluid enters the catheter through the fluid input 8 to which the low pressure syringe is connected, the second passageway 5 and the connection 6 to allow the passage of another low pressure fluid, such as a low pressure contrast fluid.

After the fact that the catheter and the guide wire reach the focus is confirmed by watching the X-ray image, the guide wire is retracted from the catheter to a port, close to the first control valve 2, of the leakage prevention portion 7 by the interventional operation robot, the guide wire is prevented from affecting the movement of the first control valve 2, then the interventional operation robot is operated to control the first control valve 2, the first passage 4 is not communicated with the leakage prevention portion 7 any more, and the first control valve 2 achieves sealing of the leakage prevention portion 7; then, the interventional operation robot controls the second control valve 3 to move, so that the second passage 5 is communicated with the fluid input part 8 connected with the high-pressure injector, and the first control valve 2 replaces the leakage-proof part 7 to bear pressure, so that the risk of fluid leakage caused by the fact that the high-pressure fluid breaks through the leakage-proof part 7 when the high-pressure injector injects the high-pressure fluid is avoided, and the risk of imaging failure caused by the fact that the leakage-proof part 7 does not bear pressure is also avoided; the high-pressure fluid enters the catheter through the fluid inlet 8 to which the high-pressure syringe is connected, the second passage 5, and the connecting portion 6, and the high-pressure fluid (e.g., high-pressure contrast medium) flows.

The beneficial effect that a liquid way auto-change over device that this application embodiment provided does: the Y-shaped valve and the multi-connection multi-way are reduced, and when the Y-shaped valve and the multi-connection multi-way are injected by adopting the Y-shaped valve, a doctor does not need to install and disassemble the Y-shaped valve and the multi-connection multi-way; when the second control valve 3 controls the second passage 5 to be communicated with a fluid input part 8 connected with a low-pressure injector, the first control valve 2 controls the communication between the first passage 4 and the leakage-proof part 7, so that a passage formed by the communication of the leakage-proof part 7, the first passage 4 and the connecting part 6 can be used for the guide wire controlled by the interventional operation robot to move and/or rotate along the axis, and meanwhile, the leakage-proof part 7 seals low-pressure fluid, so that the low-pressure fluid only flows through the fluid input part 8, the first passage 4 and the connecting part 6; when the second control valve 3 controls the second passage 5 to be communicated with the fluid input part 8 connected with the high-pressure injector, the first control valve 2 seals one end of the first passage 4 close to the leakage-proof part 7, so that the risk that the leakage-proof part 7 is broken by high-pressure fluid and radiography fails is avoided, the communication of the fluid input part 8, the second passage 5 and the connecting part 6 is also ensured, and the circulation of the high-pressure fluid is realized; the application is easy to realize automation through an interventional operation robot, the operation time is shortened through automatic control, the expenditure of patients is reduced, and the burden of the patients is lightened.

As shown in fig. 2 and 4, a first mounting hole 11 is formed in the housing 1 and is adjacent to the leakage-proof portion 7, the first mounting hole 11 is communicated with the first passage 4, the first control valve 2 includes a first driving portion 21 and a first switch 22 disposed on the first driving portion 21, the first switch 22 passes through the first mounting hole 11 and enters the first passage 4, and the first driving portion 21 is configured to control the first switch 22 to open and close one end of the first passage 4, which is adjacent to the leakage-proof portion 7. The first driving portion 21 is connected to a power source, and the power source drives the first driving portion 21 to drive the first switch 22, so as to drive the first switch 22 to open and close one end of the first passage 4 close to the leakage preventing portion 7.

As shown in fig. 2 and 5, further, the first switch 22 is rotatably disposed in the first passage 4; the first switch 22 is provided with first cavities 23 penetrating through two sides of the first switch 22, the first driving portion 21 is used for driving the first switch 22 to rotate, and the first cavities 23 are controlled to be communicated with the first passage 4 so as to control the opening and closing of one end, close to the leakage-proof portion 7, of the first passage 4.

In the embodiment, the first driving portion 21 is connected to a power source such as a motor capable of outputting rotational motion, and the first driving portion 21 drives the first switch 22 to rotate; when the second control valve 3 controls the second passage 5 to be communicated with the fluid input part 8 connected with the high-pressure injector, the first driving part 21 drives the passage opening of the first passage 23 of the first switch 22 to rotate towards the wall body of the shell 1, the outer wall of the first switch 22 seals one end, close to the leakage-proof part 7, of the first passage 4, so that the closing of one end, close to the leakage-proof part 7, of the first passage 4 is realized, the outer wall of the first switch 22 replaces the leakage-proof part 7 to bear pressure, the risk that the leakage-proof part 7 is broken by high-pressure fluid to cause fluid leakage when the high-pressure injector injects the high-pressure fluid is avoided, and the risk that the leakage-proof part 7 cannot bear pressure to cause imaging failure is also avoided; when the second control valve 3 controls the second passage 5 to be communicated with the fluid input part 8 connected with the low-pressure injector, the first driving part 21 drives the passage opening of the first passage 23 of the first switch 22 to rotate towards the direction far away from the wall body of the shell 1, so that the first passage 23 is communicated with the first passage 4, the opening of one end of the first passage 4 close to the leakage-proof part 7 is realized, and a passage formed by communicating the leakage-proof part 7, the first passage 4 and the connecting part 6 can be used for the guide wire to move and/or rotate along the axis.

Preferably, when the first switch 22 seals one end of the first passage 4 adjacent to the leak preventer 7, the axis of the first channel 23 is at an angle of 90 ° to the axis of the first passage 4.

Further, one end of the first driving portion 21, which is far away from the first switch 22, is provided with a right-angle bending section 24, and the right-angle bending section 24 is used for being clamped into a groove in a rotating shaft of the motor, so that the motor can control the first driving portion 21 to move conveniently.

Further, the first switch 22 is a ball to facilitate the rotation of the first switch 22 in the first path 4; the first switch 22 is tightly fitted with the first passage 4 to prevent fluid from leaking out of the first mounting hole 11 from a gap between the first switch 22 and the first passage 4; the diameter of the first switch 22 is larger than the diameter of the first mounting hole 11, so as to prevent the first switch 22 from falling off from the first mounting hole 11 during the rotation process; thereby improving the reliability of the present application.

Further, a detection device (not shown) is arranged in the first cavity 23, and the detection device is used for detecting whether the guide wire is positioned in the first cavity 23; when the detection device detects that the guide wire exits the first cavity 23, the first driving part 21 controls the first switch 22 to move, so that the cavity opening of the first cavity 23 rotates towards the wall body of the shell 1, and one end, close to the leakage-proof part 7, of the first passage 4 is sealed. When detection device can not detect the seal wire promptly, first drive division 21 drives first switch 22 motion, makes the chamber mouth of first chamber way 23 rotate towards the direction of the wall body of casing 1, and first switch 22's outer wall is sealed the one end that first passageway 4 is close to leak protection portion 7, has realized that first passageway 4 is close to the closure of leak protection portion 7 one end.

Further, the detection device may be a metal sensor for material detection, a proximity sensor for sensing detection, or a visual sensor for visual detection, and the detection device may be selected according to actual needs, which is not limited herein.

Preferably, the detection device is a metal sensor; the guide wire is generally made of at least one of stainless steel, nitinol, platiniridium, and tungsten, and exits the first lumen 23 when the metal sensor does not detect the metal instrument.

As shown in fig. 2, 4 and 6, a second mounting hole 12 is formed in the housing 1 and is adjacent to the fluid input portion 8, the second mounting hole 12 is communicated with the second passage 5, the second control valve 3 includes a second driving portion 31 and a second switch 32 disposed on the second driving portion 31, the second switch 32 passes through the second mounting hole 12 and enters the second passage 5, a second cavity 33 penetrating from a side wall of the second switch 32 to an end far away from the second driving portion 31 is formed in the second switch 32, and the second driving portion 31 is configured to control the second switch 32 to open and close the fluid input portion 8. The second driving portion 31 is connected to a power source, and the power source drives the second driving portion 31 to drive the second switch 32, so as to drive the second switch 32 to open and close the fluid input portion 8.

As shown in fig. 1 to 4 and 6, a plurality of fluid inlets 8 are spaced around the outer periphery of the housing 1, and the second driving portion 31 is configured to drive the second switch 32 to rotate, so as to control the communication between the second channel 33 and one of the fluid inlets 8. In the embodiment, the second driving part 31 is connected to a power source such as a motor capable of outputting rotational motion, and the second driving part 31 drives the second switch 32 to rotate; when the second driving portion 31 drives the second channel 33 of the second switch 32 to rotate towards one of the fluid input portions 8, the second passage 5 and the connecting portion 6 are communicated, and at the same time, the outer wall of the second switch 32 seals the remaining fluid input portions 8, so that the fluid input portions 8 are switched and connected, and the fluid enters the conduit through a channel formed by the currently communicated fluid input portion 8, the second passage 5 and the connecting portion 6.

Preferably, the number of the fluid input parts 8 is three, the three fluid input parts 8 are uniformly arranged around the periphery of the housing 1, and the included angle between the axes of two adjacent fluid input parts 8 is 120 °. When the second driving part 31 rotates 120 degrees, the second cavity 33 is communicated with one of the fluid input parts 8, and the other two fluid input parts 8 are sealed by the outer wall of the second switch 32, so that the switching communication of a plurality of fluid input parts 8 is realized. Of course, the number of the fluid inlets 8 can be adjusted according to actual requirements.

As shown in fig. 6, further, a rotating protrusion 34 is provided at an end of the second driving part 31 away from the second switch 32, and the rotating protrusion 34 is used for being assembled with a groove on a rotating shaft of the motor, so as to facilitate the motor to control the movement of the second driving part 31.

Preferably, the second switch 32 is a cylinder, so that the second switch 32 rotates in the second passage 5; the second switch 32 is tightly fitted to the second passage 5 to prevent fluid from leaking out of the second mounting hole 12 through a gap between the second switch 32 and the second passage 5.

Further, the fluid input portion 8 has a connection pipe whose lumen communicates with the second passage 5 of the housing 1, and facilitates connection of a high pressure syringe or a low pressure syringe to the fluid input portion 8.

As shown in fig. 3 and 4, the fluid control mechanism further includes a limiting structure 9, the limiting structure 9 includes a limiting protrusion 91 and a limiting groove 92, one of the limiting protrusion 91 and the limiting groove 92 is disposed at an end of the second switch 32 away from the second driving portion 31, the other is disposed at an end of the housing 1 adjacent to the fluid input portion 8, and the limiting protrusion 91 is slidably disposed in the limiting groove 92. When second drive portion 31 drive second switch 32 rotates, spacing arch 91 rotates in spacing recess 92, and the effect of direction can be played in the cooperation of spacing arch 91 and spacing recess 92, and on the other hand can avoid second switch 32 to drop from second mounting hole 12 when rotating to the reliability of this application has been improved.

In this embodiment, the limiting protrusion 91 is disposed at an end of the second switch 32 away from the second driving portion 31, and the limiting groove 92 is disposed at an end of the housing 1 adjacent to the fluid input portion 8.

Specifically, the limiting protrusion 91 is a convex ring disposed around the outer wall of the second switch 32, and the limiting groove 92 is an annular groove disposed around the inner wall of the housing 1. Of course, the limiting protrusion 91 may also be a bump or the like.

As shown in fig. 2 and 4, further, the housing 1 includes a first pipe 13 and a second pipe 14 which are communicated with each other, the first passage 4 is located in the first pipe 13, the connection portion 6 and the leakage preventing portion 7 are located at both ends of the first pipe 13, and the first control valve 2 is connected to one end of the first pipe 13 adjacent to the leakage preventing portion 7; the second passage 5 is located in the second pipe 14, the fluid input portion 8 is located on the outer wall of the second pipe 14, and the second control valve 3 is connected to one end of the second pipe 14 adjacent to the fluid input portion 8. The design of first pipeline 13 and second pipeline 14 can reduce the volume of casing 1, makes fluid control mechanism's whole volume reduce, the installation is more nimble, and then makes this application can be applicable to among the multiple intervention operation robot.

Further, an insertion opening 15 is formed in the side wall of the first pipeline 13, one end, away from the fluid input portion 8, of the second pipeline 14 is slightly smaller than the insertion opening 15, one end, away from the fluid input portion 8, of the second pipeline 14 is inserted into the insertion opening 15, and the second pipeline 14 is in interference fit with the insertion opening 15 or is in over-fit with the insertion opening 15.

Further, the first duct 13 and the second duct 14 are perpendicular to each other; to reduce the fluid flow path.

In other embodiments, the second pipe 14 may also be an L-shaped pipe, and the end of the second pipe 14 provided with the fluid input part 8 is arranged in parallel with the first pipe 13; the specific shape of the first duct 13 and the second duct 14 can be designed according to the actual installation requirement, and the application is not limited herein.

As shown in fig. 2 and fig. 4, further, the connecting portion 6 includes a rotating element 61 and a sealing gasket 62, the rotating element 61 is rotatably disposed on the housing 1, the sealing gasket 62 is disposed at a connection position of the rotating element 61 and the housing 1, and the rotating element 61 can be connected with a tail end of a conduit. Rotation of the rotor 61 causes rotation of the conduit and the seal 62 prevents fluid from leaking out of the connection between the rotor 61 and the housing 1, increasing reliability.

Further, the leak-proof portion 7 comprises a hemostatic valve (not shown), the wall of which is used to seal the first passage 4, the hemostatic valve being provided with a cut through which a guide wire can pass. The incision of the hemostatic valve can remove residual blood on the guide wire, the highest pressure resistance value of the hemostatic valve can reach 400psi, the residual blood can be prevented from seeping out of the leakage-proof part 7, and low-pressure fluid can be prevented from seeping out of the leakage-proof part 7.

Further, the leakage preventing part 7 further includes a bonnet 71, and the hemostatic valve is located inside the bonnet 71.

An embodiment two of the fluid control mechanism:

the difference from the first embodiment is that the first driving portion 21 is used for driving the first switch 22 to move towards or away from the first passage 4, and the first switch 22 enters or exits the first passage 4 through the first mounting hole 11 to control the opening and closing of one end of the first passage 4 adjacent to the leakage-proof portion 7.

In the embodiment, the first driving part 21 is connected to a power source such as an air cylinder capable of outputting linear motion, and the first driving part 21 drives the first switch 22 to move; when the second control valve 3 controls the second passage 5 to be communicated with the fluid input part 8 connected with the high-pressure injector, the first driving part 21 drives the first switch 22 to move towards the first passage 4, and after the first switch 22 enters the first passage 4 through the first mounting hole 11, the first switch 22 seals the first passage 4, so that the closing of one end of the first passage 4 close to the leakage-proof part 7 is realized; when the second control valve 3 controls the second passage 5 to be communicated with the fluid input part 8 connected with the low-pressure injector, the first driving part 21 drives the first switch 22 to move towards the direction far away from the first passage 4, and after the first switch 22 retreats from the first mounting hole 11 to the first passage 4, the first switch 22 cancels the sealing of the first passage 4, so that the opening of one end of the first passage 4 close to the leakage-proof part 7 is realized, and a passage formed by communicating the leakage-proof part 7, the first passage 4 and the connecting part 6 can be used for the guide wire to move and/or rotate along the axis.

Further, the first switch 22 is a circular disc or a sphere, the diameter of the first switch 22 is consistent with the diameter of the first mounting hole 11, and the first switch 22 is tightly fitted with the first passage 4; the fluid is prevented from leaking out from the gap in the first switch 22 and the first passage 4, thereby improving the reliability of the present application.

An embodiment three of the fluid control mechanism:

the difference from the first embodiment is that a plurality of fluid inlets 8 are spaced and arranged in parallel on the outer wall of the housing 1, and the second driving portion 31 is used for controlling the second switch 32 to move towards or away from the second passage 5 so as to control the communication between the second channel 33 and one of the fluid inlets 8.

In the embodiment, the second driving portion 31 is connected to a power source such as an air cylinder capable of outputting linear motion, and the second driving portion 31 drives the second switch 32 to move; when the second driving portion 31 drives the second channel 33 of the second switch 32 to move towards one of the fluid input portions 8, the outer wall of the second switch 32 seals the remaining fluid input portion 8, so that one of the fluid input portions 8, the second passage 5 and the connecting portion 6 are communicated, the fluid input portion 8 is switched and connected, and the fluid enters the conduit through a channel formed by the fluid input portion 8, the second passage 5 and the connecting portion 6.

Further, the limiting protrusion 91 is a protruding block arranged on the outer wall of the second switch 32, and the limiting groove 92 is a strip-shaped groove arranged along the length direction of the inner wall of the housing 1. When the second driving part 31 drives the second switch 32 to move, the limit protrusion 91 slides in the limit groove 92.

It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.

Claims

1. A fluid control mechanism, comprising: the guide wire sealing device comprises a shell, a first control valve and a second control valve, wherein a first passage and a second passage which are communicated with each other are arranged in the shell, the shell comprises a connecting part and a leakage-proof part which are connected with the first passage, and at least two fluid input parts which are connected with the second passage, the connecting part is externally connected with a guide pipe, and a guide wire can penetrate through the leakage-proof part and can seal one end of the first passage, which is far away from the connecting part;

2. The fluid control mechanism according to claim 1, wherein a first mounting hole is formed in the housing and located adjacent to the leakage prevention portion, the first mounting hole communicates with the first passage, the first control valve includes a first driving portion and a first switch located on the first driving portion, the first switch passes through the first mounting hole and enters the first passage, and the first driving portion is configured to control the first switch to open and close one end of the first passage adjacent to the leakage prevention portion.

3. The fluid control mechanism of claim 2, wherein the first switch is rotatably disposed in the first passage; the first switch is provided with a first cavity which penetrates through two sides of the first switch, the first driving part is used for driving the first switch to rotate, and the first cavity is controlled to be communicated with the first passage so as to control the opening and closing of one end, close to the leakage-proof part, of the first passage.

4. The fluid control mechanism of claim 3, wherein a detection device is disposed within the first channel, the detection device being configured to detect whether a guidewire is positioned within the first channel; when the detection device detects that the guide wire exits from the first cavity, the first driving part controls the first switch to move, so that the cavity opening of the first cavity rotates towards the wall body of the shell, and the first passage is sealed at one end close to the leakage-proof part.

5. The fluid control mechanism according to claim 2, wherein the first driving portion is configured to drive the first switch to move toward or away from the first passage, and the first switch enters and exits the first passage through the first mounting hole to control opening and closing of an end of the first passage adjacent to the leakage prevention portion.

6. The fluid control mechanism according to claim 1, wherein the housing has a second mounting hole disposed adjacent to the fluid input portion, the second mounting hole communicates with the second passage, the second control valve includes a second driving portion and a second switch disposed on the second driving portion, the second switch passes through the second mounting hole and enters the second passage, the second switch has a second cavity penetrating from a sidewall thereof to an end far away from the second driving portion, and the second driving portion is configured to control the second switch to open and close the fluid input portion.

7. The fluid control mechanism of claim 6, wherein a plurality of said fluid inputs are spaced around the periphery of said housing, said second drive for driving said second switch in rotation controls communication of said second chamber with one of said fluid inputs.

8. The fluid control mechanism according to claim 6, wherein a plurality of the fluid inlets are spaced apart from and juxtaposed to an outer wall of the housing, and the second driving portion is configured to control the second switch to move toward or away from the second passage to control the communication between the second chamber and one of the fluid inlets.

9. The fluid control mechanism according to any one of claims 7 or 8, further comprising a limiting structure, wherein the limiting structure comprises a limiting protrusion and a limiting groove, one of the limiting protrusion and the limiting groove is disposed at an end of the second switch away from the second driving portion, the other limiting protrusion is disposed at an end of the housing close to the fluid input portion, and the limiting protrusion is slidably disposed in the limiting groove.

10. The fluid control mechanism according to claim 1, wherein said housing includes a first pipe and a second pipe communicating with each other, said first passage is located in said first pipe, said connecting portion and said leakage preventing portion are located at both ends of said first pipe, and said first control valve is connected to one end of said first pipe adjacent to said leakage preventing portion;

the second passage is located in the second pipeline, the fluid input part is located on the outer wall of the second pipeline, and the second control valve is connected with one end, close to the fluid input part, of the second pipeline.