Medical diaphragm type pressure valve and connector thereof

Abstract

The invention relates to the technical field of water jet scalpel medical devices, and discloses a medical diaphragm type pressure valve and a connector thereof, the connector comprises a body, a liquid pipeline is arranged in the body, a movable disc is arranged at one end of the body, the disc is used for opening and closing an inlet and an outlet of the medical diaphragm type pressure valve, and the liquid pipeline is communicated with the body. An overflow groove is formed in the end, facing the connector, of the disc, the connector is arranged at an inlet and an outlet of a piston cavity of the medical diaphragm type pressure valve, the movable disc replaces parts such as steel balls to control opening and closing of the piston cavity, the weight of the movable disc is reduced, meanwhile, fixation is firm, eccentricity is not prone to occurring, and work is stable. And the working efficiency of the medical diaphragm type pressure valve is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water jet medical device, in particular to a medical diaphragm type pressure valve and its connector. BACKGROUND

[0002] In the prior art, some surgical instruments for forming liquid jet impact the surgical site at high speed to clean and cut the tissue, which usually includes a device for pressurizing liquid and a pressure pipeline, and a pipeline for recycling liquid. At present, the existing medical pressurizing device has a reversing cycle due to the movement of the piston, and the pressure formed by the output flow also forms periodic fluctuations. At the same time, the output efficiency of the pressurizing device determines the upper limit of the pressure. The gap between the core structural components of the existing pressurizing reversing valve and the positioning device is large, which is easy to produce eccentricity under the action of gravity, and the stress is unbalanced, which has a great influence on the efficiency of the pressurizing device. Another one uses a steel ball as the valve core, which has the problem of too large mass, resulting in low efficiency of the pressurizing device. SUMMARY

[0003] The purpose of the present application is to provide a medical diaphragm type pressure valve and its connector, which is firmly fixed, and the components thereon are stable and reliable, and are not easy to produce eccentricity, work stably, and ensure the production efficiency of the whole pressurizing device.

[0004] In order to achieve the above purpose, the present application provides a connector of a medical diaphragm type pressure valve, which comprises:

[0005] A body is provided with a liquid pipeline in the body, and one end of the body is provided with a movable disc, which is used to open and close the inlet and outlet of the medical diaphragm type pressure valve, and the disc is provided with an overflow groove at one end of the connector.

[0006] Compared with the prior art, the connector of the medical diaphragm type pressure valve of the present application has the beneficial effects that the connector is arranged at the inlet and outlet of the piston chamber of the medical diaphragm type pressure valve, and the movable disc is used to replace the steel ball and other components to control the opening and closing of the piston chamber, which not only reduces the weight, but also is firmly fixed and not easy to produce eccentricity, works stably, and ensures the working efficiency of the medical diaphragm type pressure valve.

[0007] The joint of the medical diaphragm pressure valve of the embodiment of the application further comprises a liquid inlet joint arranged in the liquid inlet chamber of the medical diaphragm pressure valve and a liquid outlet joint arranged in the liquid outlet chamber of the medical diaphragm pressure valve, the liquid inlet joint is internally provided with a liquid inlet pipeline, one side of the liquid inlet joint is provided with a movable liquid inlet disc, the liquid outlet joint is internally provided with a liquid outlet pipeline, one side of the liquid outlet joint is provided with a movable liquid outlet disc, the liquid inlet disc is provided with a first overflow groove at one end of the outlet of the liquid inlet chamber, and the liquid outlet disc is provided with a second overflow groove at one end of the liquid outlet joint.

[0008] The application provides a medical diaphragm pressure valve, which comprises:

[0009] A shell is internally formed with a piston chamber, a liquid inlet chamber and a liquid outlet chamber, the piston chamber is respectively communicated with the liquid outlet chamber and the liquid inlet chamber;

[0010] The liquid outlet joint is arranged in the liquid outlet chamber, the liquid outlet joint seals one end of the liquid outlet chamber away from the piston chamber, the liquid inlet joint is arranged in the liquid inlet chamber, the liquid inlet joint seals one end of the liquid inlet chamber away from the piston chamber, and the piston in the piston chamber moves and drives the liquid inlet disc and the liquid outlet disc to move.

[0011] Compared with the prior art, the medical diaphragm pressure valve of the embodiment of the application has the beneficial effects that the shell is internally formed with a piston chamber, a piston is arranged in the piston chamber for reciprocating movement, the piston chamber is communicated with a liquid outlet chamber, and the reciprocating movement of the piston can discharge the liquid in the piston chamber from the liquid outlet chamber; the liquid outlet joint is arranged in the liquid outlet chamber, the liquid outlet joint is internally provided with a liquid outlet pipeline, the liquid outlet joint is provided with a liquid outlet disc at one end of the piston chamber, and a second overflow groove is arranged between the liquid outlet joint and the liquid outlet disc; when the liquid is discharged, the piston moves towards the liquid outlet chamber, an outward thrust is formed in the piston chamber, the liquid outlet disc is driven to slide away from the inner wall, at this time, the second overflow groove on the liquid outlet chamber can be used for the liquid to pass through, so that the liquid can enter the liquid outlet pipeline from the liquid outlet chamber, and the discharge of the liquid is completed. The medical diaphragm pressure valve of the application is closed and arranged, is fixed firmly, the liquid outlet disc which is slidably fixed in the liquid outlet joint is also stable and reliable, and is not prone to eccentricity in the working process, so that the production efficiency of the whole pressurizing device is ensured.

[0012] The medical diaphragm pressure valve of the embodiment of the application is provided with a first end face and a second end face which are arranged in a stepped shape at one end of the liquid inlet joint towards the piston chamber, the liquid inlet disc comprises a main body and a first abutting portion which extends towards the first end face of the liquid inlet joint, and the main body abuts against the second end face to seal the liquid inlet passage when the liquid is discharged.

[0013] The medical diaphragm pressure valve of the embodiment of the present application, the first support part is arranged on one side end face of the inlet disc towards the piston chamber, the first overflow groove is arranged on the first support part, the first support part is abutted on the inner wall of the inlet chamber close to the piston chamber when liquid is inletted, and the liquid flows into the piston chamber through the first overflow groove.

[0014] The medical diaphragm pressure valve of the embodiment of the present application, one end of the outlet connector towards the piston chamber is arranged as a stepped third end face and a fourth end face, the outlet disc comprises a second main body and a second abutment part extending towards the fourth end face, the length of the second abutment part is greater than the distance between the third end face and the fourth end face in the length direction of the outlet connector, and the second overflow groove is formed between the second abutment part and the fourth end face when the outlet disc moves when liquid is outletted.

[0015] The medical diaphragm pressure valve of the embodiment of the present application, the second annular sealing ring is arranged on one side end face of the outlet disc towards the piston chamber, the second annular sealing ring is abutted on the inner wall of the outlet chamber close to the piston chamber to close the outlet chamber when liquid is inletted.

[0016] The medical diaphragm pressure valve of the embodiment of the present application, the edges of the outlet disc and the inlet disc are arranged to be inclined, and the included angle between the edges of the outlet disc and the inlet disc and the wall surface abutted thereon is in the range of 0-90°.

[0017] The medical diaphragm pressure valve of the embodiment of the present application, a plurality of first overflow grooves are arranged, and the sum of the cross-sectional areas through which the liquid flows of the plurality of first overflow grooves is greater than or equal to the axial cross-sectional area of the inlet pipeline.

[0018] The medical diaphragm pressure valve of the embodiment of the present application, a plurality of second overflow grooves are arranged, and the sum of the cross-sectional areas through which the liquid flows of the plurality of second overflow grooves is greater than or equal to the axial cross-sectional area of the outlet pipeline.

[0019] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of the medical diaphragm pressure valve of the embodiment of the present application when liquid is inletted;

[0021] Figure 2 is Figure 1 is a schematic view of A in FIG. 4;

[0022] Figure 3 is a structural schematic view of the medical diaphragm pressure valve of the embodiment of the present application when liquid is outletted;

[0023] Figure 4 is Figure 2 a schematic view at B in FIG. 1;

[0024] Figure 5 is a structural schematic view of an inlet disc of a medical diaphragm pressure valve according to an embodiment of the present application;

[0025] Figure 6 is a structural schematic view of an outlet disc of a medical diaphragm pressure valve according to an embodiment of the present application;

[0026] In the figure, 1, housing; 11, piston chamber; 12, inlet chamber; 13, outlet chamber; 2, inlet connector; 21, inlet pipeline; 22, inlet disc; 221, first overflow groove; 222, first main body; 223, first abutting portion; 224, first supporting portion; 23, first end face; 24, second end face; 3, outlet connector; 31, outlet pipeline; 32, outlet disc; 321, second overflow groove; 322, second main body; 323, second abutting portion; 324, second annular sealing ring; 33, third end face; 34, fourth end face. DETAILED DESCRIPTION

[0027] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as limiting the present application.

[0028] In the description of the present application, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application, which does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation.

[0029] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0030] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0031] As shown in Figure 5 and Figure 6 , a joint of a medical diaphragm pressure valve according to the preferred embodiment of the present application comprises a body, a liquid channel is arranged in the body, a movable disc is arranged at one end of the body, the disc is used to open and close the inlet and outlet of the medical diaphragm pressure valve, and an overflow groove is arranged at the end of the joint facing the disc. The joint is arranged at the inlet and outlet of the piston chamber of the medical diaphragm pressure valve, and the movable disc is used to replace the steel ball and other components to control the opening and closing of the piston chamber, thereby reducing the weight of the joint, firmly fixing the joint, preventing the joint from being eccentric, stabilizing the work, and ensuring the working efficiency of the medical diaphragm pressure valve.

[0032] It can be understood that the overflow groove can be arranged in the shape of a window for facilitating mold production and processing, or in the shape of a long slot for facilitating the flow of liquid, and the specific arrangement is not limited herein.

[0033] In some embodiments of the present application, a liquid inlet joint arranged in the liquid inlet chamber of the medical diaphragm pressure valve and a liquid outlet joint arranged in the liquid outlet chamber of the medical diaphragm pressure valve are further included, a liquid inlet channel is arranged in the liquid inlet joint, a movable liquid inlet disc is arranged at one side of the liquid inlet joint, a liquid outlet channel is arranged in the liquid outlet joint, and a movable liquid outlet disc is arranged at one side of the liquid outlet joint, a first overflow groove is arranged at the end of the liquid inlet disc facing the outlet of the liquid inlet chamber, and a second overflow groove is arranged at the end of the liquid outlet disc facing the liquid outlet joint.

[0034] As shown in Figure 1 and Figure 3 , a medical diaphragm pressure valve according to the preferred embodiment of the present application comprises a shell 1, a liquid inlet joint 2, and a liquid outlet joint 3, three chambers are formed in the shell 1, which are a piston chamber 11, a liquid inlet chamber 12, and a liquid outlet chamber 13, the piston chamber 11 is in communication with the liquid inlet chamber 12 and the liquid outlet chamber 13, the piston chamber 11 is used to accommodate a piston and enable the piston to move back and forth therein, the liquid inlet chamber 12 is used to accommodate the liquid inlet joint 2, and the liquid outlet chamber 13 is used to accommodate the liquid outlet joint 3, during work, liquid enters the piston chamber 11 from the liquid inlet chamber 12 during the reciprocating movement of the piston, and then enters the liquid outlet chamber 13 from the piston chamber 11.

[0035] As shown in Figure 1 and Figure 2As shown, the liquid inlet joint 2 is arranged in the liquid inlet chamber 12 and closes the end of the liquid inlet chamber 12 away from the piston chamber 11, the liquid inlet joint 2 is provided with a liquid inlet pipe 21, both ends of the liquid inlet pipe 21 are connected with the liquid inlet chamber 12 and the external liquid supply mechanism respectively, so that the liquid needing to be pressurized can only enter the liquid inlet chamber 12 through the liquid inlet pipe 21; the end of the liquid inlet joint 2 towards the piston chamber 11 is slidingly provided with a liquid inlet disc 22, the liquid inlet disc 22 can move along the length direction of the liquid inlet joint 2 with the movement of the piston in the piston chamber 11, the end of the liquid inlet disc 22 towards the piston chamber 11 is provided with a first overflow groove 221, when the piston moves away from the liquid inlet chamber 12, the liquid inlet disc 22 will abut against the inner wall of the side of the liquid inlet chamber 12 close to the piston chamber 11, at this time, the first overflow groove 221 makes the liquid inlet disc 22 unable to close the passage between the liquid inlet chamber 12 and the piston chamber 11, and the liquid can enter the piston chamber 11 through the first overflow groove 221.

[0036] As shown in Figure 3 and Figure 4 , the liquid outlet joint 3 is arranged in the liquid outlet chamber 13 and closes the end of the liquid outlet chamber 13 away from the piston chamber 11, the liquid outlet joint 3 is provided with a liquid outlet pipe 31, both ends of the liquid outlet pipe 31 are connected with the liquid outlet chamber 13 and the external mechanism needing to be supplied with liquid respectively, the liquid entering the liquid outlet chamber 13 can only be supplied to the outside through the liquid outlet pipe 31, the end of the liquid outlet joint 3 towards the piston chamber 11 is slidingly provided with a liquid outlet disc 32, the end of the liquid outlet disc 32 towards the liquid outlet joint 3 is provided with a second overflow groove 321, when the piston moves in the piston chamber 11 towards the liquid outlet chamber 13, the liquid outlet disc 32 will be pressed towards the inlet of the liquid outlet pipe 31, but the existence of the second overflow groove 321 makes the inlet of the liquid outlet pipe 31 not completely closed by the liquid outlet disc 32, the liquid pressed into the liquid outlet chamber 13 can enter the liquid outlet pipe 31 through the second overflow groove 321.

[0037] As shown in Figure 1 - Figure 4As shown, in working, when the piston moves towards the direction away from the liquid inlet chamber 12 and the liquid outlet chamber 13, a negative pressure is formed in the piston chamber 11, which drives the liquid outlet disc 32 and the liquid inlet disc 22 to slide to abut against the inner wall of the liquid inlet chamber 12 and the liquid outlet chamber 13 close to the piston chamber 11, the liquid outlet disc 32 closes the liquid outlet chamber 13, and the first overflow groove 221 on the liquid inlet chamber 12 can supply liquid to pass through, so that the liquid enters the piston chamber 11 from the liquid inlet chamber 12; when the piston moves towards the direction close to the liquid inlet chamber 12 and the liquid outlet chamber 13, an outward thrust is formed in the piston chamber 11, which drives the liquid outlet disc 32 and the liquid inlet disc 22 to slide away from the inner wall, the liquid inlet disc 22 closes the liquid inlet pipeline 21 at this time, and the second overflow groove 321 on the liquid outlet chamber 13 can supply liquid to pass through, so that the liquid enters the liquid outlet pipeline 31 from the liquid outlet chamber 13, and the liquid discharge is completed. The medical diaphragm type pressure valve of the application is closed and arranged with the liquid inlet connector 2 and the liquid outlet connector 3, which is fixed firmly, and the liquid inlet disc 22 and the liquid outlet disc 32 which are slidably fixed on the liquid inlet connector 2 and the liquid outlet connector 3 are also stable and reliable, and are not easy to be eccentric in the working process, which ensures the production efficiency of the whole pressurizing device.

[0038] As shown in Figure 3 and Figure 5 In some embodiments of the application, the end of the liquid inlet connector 2 close to the piston chamber 11 is arranged as a stepped first end face 23 and a second end face 24, the second end face 24 is closer to the piston chamber 11 than the first end face 23, the liquid inlet disc 22 comprises a first main body 222 and a first abutting part 223 extending towards the first end face 23 of the liquid inlet connector 2, the length of the first abutting part 223 is equal to the distance between the first end face 23 and the second end face 24 in the length direction of the liquid inlet connector 2, when the piston chamber 11 discharges liquid, the piston pushes the liquid to press the liquid inlet disc 22 towards the liquid inlet connector 2, at this time, the first main body 222 abuts against the second end face 24 to close the liquid inlet passage, at this time, the liquid inlet disc 22 completely closes the opening of the liquid inlet passage, so that the liquid cannot flow back, which ensures the correct and reliable flow direction of the liquid.

[0039] As shown in Figure 3 and Figure 5As shown, in some embodiments of the present invention, a first support portion 224 is provided on the end face of the liquid inlet disc 22 facing the piston chamber 11. The first support portion 224 protrudes from its end face, and a first overflow groove 221 is provided on the first support portion 224, specifically in the form of a notch in the first support portion 224. During liquid inlet, the piston moves away from the liquid inlet chamber 12, generating a negative pressure in the piston chamber 11, which draws the liquid inlet disc 22 to abut against the inner wall of the liquid inlet chamber 12 near the piston chamber 11. At this time, the first support portion 224 abuts against the inner wall of the liquid inlet chamber 12 near the piston chamber 11, but because of the presence of the first overflow groove 221 as a notch, liquid can flow into the piston chamber 11 through the first overflow groove 221, completing the liquid inlet process of the piston chamber 11. Furthermore, multiple first overflow grooves 221 can be provided to allow liquid inlet to proceed together, ensuring unobstructed liquid inlet channels.

[0040] like Figure 4 and Figure 6 As shown, in some embodiments of the present invention, the end of the liquid outlet connector 3 facing the piston chamber 11 is configured with a stepped third end face 33 and a fourth end face 34. The fourth end face 34 is closer to the piston chamber 11 than the third end face 33. The liquid outlet disc 32 includes a second body 322 and a second abutment portion 323 extending toward the fourth end face 34. The length of the second abutment portion 323 is greater than the distance between the third end face 33 and the fourth end face 34 in the length direction of the liquid outlet connector 3. A long groove is also formed in the length direction of the second abutment portion 323. When discharging liquid, the piston pushes the liquid into the liquid outlet chamber 13, pressing the liquid outlet disc 32 toward the piston chamber 11. When the liquid inlet connector 2 is in place, the second body 322 abuts against the fourth end face 34. However, since the length of the second abutment part 323 is greater than the distance between the third end face 33 and the fourth end face 34 in the length direction of the liquid outlet connector 3, when the end of the second abutment part 323 abuts against the fourth end face 324, the bottom end face of the second body 322 still does not abut against the third end face 33. Therefore, the long groove on the second abutment part 323 and the bottom end face of the third end face 33 and the second body 322 form a second overflow groove 321. The liquid enters the liquid outlet pipe 31 inside the liquid outlet connector 3 through the second overflow groove 321, completing the liquid outlet of the piston chamber 11.

[0041] like Figure 4 and Figure 6As shown, in some embodiments of the present invention, a second annular sealing ring 324 is provided on the end face of the liquid outlet disc 32 facing the piston chamber 11. During liquid inlet, the second annular sealing ring 324 abuts against the inner wall of the liquid outlet chamber 13 near the piston chamber 11 to seal the liquid outlet chamber 13. During liquid inlet, the piston moves away from the liquid outlet chamber 13, and a negative pressure is generated in the piston chamber 11, which draws the liquid outlet disc 32 to abut against the inner wall of the liquid outlet chamber 13 near the piston chamber 11. At this time, the second annular sealing ring 324 completely seals the liquid outlet chamber 13, preventing the liquid in the liquid outlet pipe 31 and the liquid outlet chamber 13 from being sucked into the piston chamber 11.

[0042] like Figure 3 As shown, in some embodiments of the present invention, the thickness of the liquid outlet disc 32 is set to L1, and the thickness of the liquid inlet disc 22 is set to L2. The range of L1 and L2 is set to 0.01-100 mm. The thickness range of the liquid outlet disc 32 and the liquid inlet disc 22 is suitable for various sizes of medical pressure valves, and can supply liquid to water jets of different sizes. Preferably, the values ​​of L1 and L2 can be 0.1 mm, 0.5 mm, 1 mm, 5 mm, 8 mm, etc., and the above values ​​can be measured by means of vernier calipers or electronic rangefinders.

[0043] like Figure 3 As shown, in some embodiments of the present invention, the edges of the inlet disc 22 and the outlet disc 32 are chamfered, and the edges of the outlet disc 32 and the inlet disc 22 are inclined towards the outlet connector 3 and the inlet connector 2 to improve the strength of the outlet disc 32 and the inlet disc 22. The angle between the edges of the outlet disc 32 and the inlet disc 22 and the wall surface they abut against is set to a and b, both of which are in the range of 0-90°. Preferably, the values ​​of a and b can be 30°, 45°, 60°, etc.

[0044] like Figure 5 As shown, in some embodiments of the present invention, multiple first overflow channels 221 are provided. The sum of the cross-sectional areas through which the liquid flows in the multiple first overflow channels 221 is greater than or equal to the axial cross-sectional area of ​​the liquid inlet pipe 21. At this time, the liquid can flow stably through the first overflow channels 221 and enter the piston chamber 11. If the cross-sectional area through which the liquid flows in the first overflow channels 221 is less than the axial cross-sectional area of ​​the liquid inlet pipe 21, the water flow will be too rapid and the water pressure will be too high, affecting the stability of the liquid input.

[0045] like Figure 6As shown, in some embodiments of the present invention, multiple second overflow channels 321 are provided. The sum of the cross-sectional areas through which the liquid flows in the multiple second overflow channels 321 is greater than or equal to the axial cross-sectional area of ​​the outlet pipe 31. At this time, the liquid can flow stably through the second overflow channels 321 and enter the outlet pipe 31. If the cross-sectional area through which the liquid flows in the second overflow channels 321 is less than the axial cross-sectional area of ​​the outlet pipe 31, the water flow into the outlet pipe 31 may be slower, resulting in water pressure loss, which is not conducive to the subsequent pressurization process of the water jet and reduces the pressurization efficiency.

[0046] In some embodiments of the present invention, the maximum sliding distance range of the liquid inlet disc 22 and the liquid outlet disc 32 is set to S1 and S2, respectively, and the values ​​of S1 and S2 are both 0.01-100mm.

[0047] The working process of this invention is as follows: A piston chamber 11 is formed inside the housing 1. A piston is installed in the piston chamber 11 and reciprocates. The piston chamber 11 is connected to an inlet chamber 12 and an outlet chamber 13. During the reciprocating motion of the piston, liquid can be drawn from the inlet chamber 12 and discharged from the outlet chamber 13. An inlet connector 2 is provided in the inlet chamber 12. An inlet pipe 21 is provided inside the inlet connector 2. An inlet disc 22 is provided at the end of the inlet connector 2 facing the piston chamber 11. A first overflow groove 221 is provided on the inlet disc 22. An outlet connector 3 is provided in the outlet chamber 13. An outlet pipe 31 is provided inside the outlet connector 3. An outlet disc 32 is provided at the end of the outlet connector 3 facing the piston chamber 11. A second overflow groove 321 is provided between the outlet connector 3 and the outlet disc 32. When liquid is being introduced, the piston moves away from the inlet. When the piston moves in the direction of chamber 12 and outlet chamber 13, a negative pressure is formed in the piston chamber 11, which drives the outlet disc 32 and inlet disc 22 to slide to abut against the inner wall of the outlet chamber 13 and inlet chamber 12 on the side close to the piston chamber 11. The outlet disc 32 closes the outlet chamber 13, and the first overflow groove 221 on the inlet chamber 12 allows liquid to pass through, so that the liquid enters the piston chamber 11 from the inlet chamber 12. When discharging, when the piston moves in the direction close to the inlet chamber 12 and outlet chamber 13, an outward thrust is formed in the piston chamber 11, which drives the outlet disc 32 and inlet disc 22 to slide away from the inner wall. At this time, the inlet disc 22 closes the inlet pipe 21, and the second overflow groove 321 on the outlet chamber 13 allows liquid to pass through, so that the liquid enters the outlet pipe 31 from the outlet chamber 13, thus completing the discharge of the liquid.

[0048] In summary, the present invention provides a medical diaphragm pressure valve, wherein the inlet connector 2 and the outlet connector 3 are closed and securely fixed, and the inlet disc 22 and the outlet disc 32, which are slidably fixed to the inlet connector 2 and the outlet connector 3, are also stable and reliable, and are not prone to eccentricity during operation, thus ensuring the overall production efficiency of the pressurizing device.

[0049] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A connector for a medical diaphragm pressure valve, characterized in that, include: The body contains a liquid pipeline, and one end of the body is provided with a movable disc for opening and closing the inlet and outlet of the medical diaphragm pressure valve. The end of the disc facing the connector is provided with an overflow groove.

2. The connector of the medical diaphragm pressure valve according to claim 1, characterized in that: It also includes an inlet connector disposed in the inlet chamber of the medical diaphragm pressure valve and an outlet connector disposed in the outlet chamber of the medical diaphragm pressure valve. The inlet connector is provided with an inlet pipe and a movable inlet disc is provided on one side of the inlet connector. The outlet connector is provided with an outlet pipe and a movable outlet disc is provided on one side of the outlet connector. The inlet disc is provided with a first overflow groove at the outlet end facing the inlet chamber and a second overflow groove at the outlet end facing the outlet connector.

3. A medical diaphragm pressure valve, characterized in that, include: A housing having a piston chamber, an inlet chamber, and an outlet chamber formed therein, the piston chamber being connected to the outlet chamber and the inlet chamber respectively; The liquid outlet chamber is provided with the liquid outlet connector as described in claim 2, the liquid outlet connector closes the end of the liquid outlet chamber away from the piston chamber, the liquid inlet chamber is provided with the liquid inlet connector as described in claim 2, the liquid inlet connector closes the end of the liquid inlet chamber away from the piston chamber, and the piston in the piston chamber moves and drives the liquid inlet disc and the liquid outlet disc to move.

4. The medical diaphragm pressure valve according to claim 3, characterized in that: The end of the liquid inlet connector facing the piston chamber is configured with a stepped first end face and a second end face. The liquid inlet disc includes a first body and a first abutting portion extending toward the first end face of the liquid inlet connector. When liquid is discharged, the first body abuts against the second end face to close the liquid inlet channel.

5. The medical diaphragm pressure valve according to claim 3, characterized in that: A first support portion is provided on the end face of the liquid inlet disc facing the piston chamber, and a first overflow groove is provided on the first support portion. When liquid is introduced, the first support portion abuts against the inner wall of the liquid inlet chamber near the piston chamber, and the liquid flows into the piston chamber from the first overflow groove.

6. The medical diaphragm pressure valve according to claim 4, characterized in that: The end of the liquid outlet connector facing the piston chamber is configured with a stepped third end face and a fourth end face. The liquid outlet disc includes a second body and a second abutment portion extending toward the fourth end face. The length of the second abutment portion is greater than the distance between the third end face and the fourth end face in the length direction of the liquid outlet connector. When discharging liquid, the liquid outlet disc moves to form the second overflow groove between the second abutment portion and the fourth end face.

7. The medical diaphragm pressure valve according to claim 3, characterized in that: A second annular sealing ring is provided on the end face of the liquid outlet disc facing the piston chamber. When liquid is introduced, the second annular sealing ring abuts against the inner wall of the liquid outlet chamber near the piston chamber to seal the liquid outlet chamber.

8. The medical diaphragm pressure valve according to claim 3, characterized in that: The edges of the liquid outlet disc and the liquid inlet disc are inclined, and the angle between the edges of the liquid outlet disc and the wall surface they abut against is in the range of 0-90°.

9. The medical diaphragm pressure valve according to claim 3, characterized in that: Multiple first overflow channels are provided, and the sum of the cross-sectional areas through which the liquid flows in the multiple first overflow channels is greater than or equal to the axial cross-sectional area of ​​the liquid inlet pipe.

10. The medical diaphragm pressure valve according to claim 3, characterized in that: Multiple second overflow channels are provided, and the sum of the cross-sectional areas through which the liquid flows in the multiple second overflow channels is greater than or equal to the axial cross-sectional area of ​​the liquid outlet pipe.

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