Water jet supercharging device

Abstract

The utility model relates to the technical field of medical instruments, and particularly discloses a water jet pressurizing device which comprises a pump body, a liquid inlet connector, a liquid outlet connector, a first one-way pre-tightening valve and a second one-way pre-tightening valve. The pump body is provided with a piston cavity, one end of the pump body is provided with a first cavity and a second cavity, a liquid inlet channel is communicated between the first cavity and the piston cavity, and a liquid outlet channel is communicated between the second cavity and the piston cavity; one end of the liquid inlet connector is installed in the first cavity, and a first conical surface is arranged on the inner wall of the end, close to the liquid inlet channel, of the liquid inlet connector. The first one-way pre-tightening valve is arranged between the first conical surface and the pump body; one end of the liquid outlet connector is installed in the second cavity, and a second conical surface is arranged at the end, close to the liquid outlet connector, of the liquid outlet channel. And the second one-way pre-tightening valve piece is arranged between the second conical surface and the liquid outlet connector. According to the secondary emptying device, secondary emptying of the pump body can be effectively achieved, the emptying efficiency is high, and the operation risk and the operation cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a water jet pressurization device. Background Technology

[0002] In clinical practice, water jet cutting uses a pressurizing device to pressurize sterile saline solution, which is then sprayed out through a fine nozzle on the water jet head to achieve precise tissue cutting.

[0003] In existing pressurization devices, the check valve is usually in the normally open state. This structure is not affected when the water pump is initially emptied. However, when the water pump chamber is in a state of liquid and air mixing, for example, if the saline solution in the supply bag runs out during surgery without the surgeon's knowledge and the supply bag is not replaced in time, air can enter the pump; or when the supply bag is replaced, the surgeon may not close the stop clamp, allowing air to enter the pipeline and flow into the pump; or when the water jet needs to be used a second or multiple times, air may enter the pipeline and flow into the pump during transportation or storage. The steel ball in the check valve, due to water adhesion, cannot achieve a sealing effect, resulting in the water pump failing to empty or having low emptying efficiency during secondary use.

[0004] The existing solution is to manually drain or replace the water pump, but this will undoubtedly affect the progress of the surgery, increase the surgical risks, and also generate additional surgical costs. Utility Model Content

[0005] The technical problem to be solved by this utility model is: how to solve the problem that the water pump cannot be emptied or has low emptying efficiency when used for a second time.

[0006] To solve the above-mentioned technical problems, this utility model provides a water jet pressurization device, comprising:

[0007] The pump body has a piston chamber, and one end of the pump body is provided with a first chamber and a second chamber. The first chamber and the piston chamber are connected by an inlet channel, and the second chamber and the piston chamber are connected by an outlet channel.

[0008] A liquid inlet connector, one end of which is installed in the first chamber, and the inner wall of the liquid inlet connector near the liquid inlet channel is provided with a first conical surface;

[0009] The first one-way pre-tightening valve is disposed between the first conical surface and the pump body. The first one-way pre-tightening valve is configured to fit against the first conical surface to form a normally closed state in the initial state.

[0010] A liquid outlet connector, one end of which is installed in the second chamber, and a second conical surface is provided at the end of the liquid outlet channel near the liquid outlet connector; and...

[0011] The second one-way pre-tightening valve is disposed between the second conical surface and the liquid outlet connector. The second one-way pre-tightening valve is configured to fit against the second conical surface in the initial state to form a normally closed state.

[0012] More preferably, the first one-way preload valve includes:

[0013] A first valve ball, wherein the first valve ball is disposed in the liquid inlet channel; and

[0014] A first preload spring is axially disposed between the first valve ball and the pump body, and the first preload spring is configured to allow the first valve ball to fit against the first conical surface in the initial state.

[0015] More preferably, the maximum diameter of the first conical surface is greater than the diameter of the first valve ball, and the minimum diameter of the first conical surface is less than the diameter of the first valve ball.

[0016] More preferably, it also includes:

[0017] The first limiting member is axially disposed inside the first preload spring, and the diameter of the first limiting member is smaller than the diameter of the first valve ball.

[0018] More preferably, the first limiting member and the first valve ball are separate structures, the first limiting member is a hollow tubular structure, and the side wall of the first limiting member has at least one first window.

[0019] More preferably, the first limiting member and the first valve ball are an integral structure, the first limiting member is a solid columnar structure, the first limiting member and the first valve ball form a first step at the connection, and one end of the first preload spring abuts against the first step;

[0020] The end of the first limiting member away from the first valve ball is provided with a first channel that runs radially through it.

[0021] More preferably, the second one-way preload valve includes:

[0022] A second valve ball, the second valve ball being disposed in the second chamber; and...

[0023] A second preload spring is axially disposed between the second valve ball and the liquid outlet connector. The second preload spring is configured to allow the second valve ball to fit against the second conical surface in the initial state.

[0024] More preferably, the maximum diameter of the second conical surface is greater than the diameter of the second valve ball, and the minimum diameter of the second conical surface is less than the diameter of the second valve ball.

[0025] More preferably, it also includes:

[0026] The second limiting member is axially disposed inside the second preload spring, and the diameter of the second limiting member is smaller than the diameter of the second valve ball.

[0027] More preferably, the second limiting member and the second valve ball are separate structures, the second limiting member is a hollow tubular structure, and the side wall of the second limiting member has at least one second window.

[0028] More preferably, the second limiting member and the second valve ball are an integral structure, the second limiting member is a solid columnar structure, the second limiting member and the second valve ball form a second step at the connection, and one end of the second preload spring abuts against the second step;

[0029] The end of the second limiting member away from the second valve ball is provided with a second channel that runs radially through it.

[0030] More preferably, it also includes:

[0031] A retaining pin, configured to secure the inlet connector to the pump body;

[0032] Alternatively, the retaining pin is configured to secure the outlet connector to the pump body.

[0033] More preferably, it also includes:

[0034] A first sealing ring is disposed on the outer peripheral wall of the inlet connector, and the first sealing ring is used to seal the inlet connector and the pump body; and...

[0035] The second sealing ring is disposed on the outer peripheral wall of the liquid outlet connector and is used to seal the liquid outlet connector and the pump body.

[0036] More preferably, it also includes:

[0037] A piston configured to reciprocate axially within the piston chamber.

[0038] Compared with the prior art, the water jet booster device provided by this utility model has the following advantages:

[0039] This invention features a first conical surface on the inner wall of the inlet connector near the inlet channel, and a first one-way pre-tightening valve between the first conical surface and the pump body. In the initial state, the first one-way pre-tightening valve is always in contact with the first conical surface to form a normally closed state. Similarly, a second conical surface is provided at the end of the outlet channel near the outlet connector, and a second one-way pre-tightening valve between the second conical surface and the outlet connector is provided. In the initial state, the second one-way pre-tightening valve is in contact with the second conical surface to form a normally closed state. Thus, by applying a one-way pre-tightening effect in the initial state, the secondary evacuation of the pump body can be effectively achieved with high evacuation efficiency, reducing surgical risks and costs, and ensuring the safety and health of the patient. Attached Figure Description

[0040] Figure 1 This is an exploded view of a water jet pressurization device according to the present invention.

[0041] Figure 2 This is a front view of a water jet booster device according to the present invention.

[0042] Figure 3 This is a utility model Figure 2 A sectional view of section AA in the middle.

[0043] Figure 4 This is a cross-sectional view of the pump body described in this utility model at section AA.

[0044] Figure 5 This is a utility model Figure 3 Enlarged schematic diagram of point B (split structure).

[0045] Figure 6 This is a schematic diagram of the structure of the limiting component described in this utility model.

[0046] Figure 7 This is a schematic diagram of the integrated structure of the limiting member and the valve ball described in this utility model.

[0047] Figure 8 This is a utility model Figure 3 Enlarged schematic diagram of point B (integrated structure).

[0048] Figure label:

[0049] 10. Pump body; 11. Piston chamber; 12. First chamber; 13. Second chamber; 14. Inlet channel; 15. Outlet channel; 16. Second conical surface;

[0050] 20. Liquid inlet connector; 201. First conical surface; 21. First sealing ring; 22. First one-way pre-tightening valve; 221. First valve ball; 222. First pre-tightening spring; 23. First limiting element; 231. First window; 232. First channel; 24. First step;

[0051] 30. Liquid outlet connector; 31. Second sealing ring; 32. Second one-way pre-tightening valve; 321. Second valve ball; 322. Second pre-tightening spring; 33. Second limiting element; 331. Second window; 332. Second channel; 34. Second step;

[0052] 40. Fixing pin;

[0053] 50. Piston. Detailed Implementation

[0054] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0055] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings are used only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0056] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0058] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0060] like Figures 1-6 As shown, this embodiment provides a water jet booster device, including a pump body 10, an inlet connector 20, and an outlet connector 30. The pump body 10 has an axial orientation and a piston chamber 11 extending axially within it. One end of the pump body 10 is provided with a first chamber 12 and a second chamber 13. An inlet channel 14 connects the first chamber 12 and the piston chamber 11, and an outlet channel 15 connects the second chamber 13 and the piston chamber 11. One end of the inlet connector 20 is axially mounted in the first chamber 12, and one end of the outlet connector 30 is axially mounted in the second chamber 13. Figure 1 The middle arrow indicates the direction of liquid flow.

[0061] In some embodiments, to improve the secondary evacuation efficiency and effect of the pump body 10, the water jet booster device of this embodiment further includes a first one-way pre-tightening valve 22 and a second one-way pre-tightening valve 32; wherein, the inner wall of the inlet connector 20 near the inlet channel 14 is provided with a first conical surface 201, the first one-way pre-tightening valve 22 is disposed between the first conical surface 201 and the pump body 10, and the first one-way pre-tightening valve 22 is configured to fit with the first conical surface 201 in the initial state to form a normally closed state; the outlet channel 15 near the outlet connector 30 is provided with a second conical surface 16, the second one-way pre-tightening valve 32 is disposed between the second conical surface 16 and the outlet connector 30, and the second one-way pre-tightening valve 32 is configured to fit with the second conical surface 16 in the initial state to form a normally closed state. Therefore, by providing a first conical surface 201 on the inner wall of the inlet connector 20 near the inlet channel 14, and providing a first one-way pre-tightening valve 22 between the first conical surface 201 and the pump body 10, the first one-way pre-tightening valve 22 can always be in contact with the first conical surface 201 to form a normally closed state in the initial state. Similarly, a second conical surface 16 is provided at the end of the outlet channel 15 near the outlet connector 30, and a second one-way pre-tightening valve 32 is provided between the second conical surface 16 and the outlet connector 30. In the initial state, the second one-way pre-tightening valve 32 can be in contact with the second conical surface 16 to form a normally closed state. Thus, by applying a one-way pre-tightening effect in the initial state, the secondary evacuation of the pump body 10 can be effectively achieved, and the evacuation efficiency is high, reducing surgical risks and costs, and ensuring the life and health safety of patients.

[0062] It should be noted that the term "initial state" refers to the water jet pressurization device being in the working state, that is, in the "initial state", both the inlet connector 20 and the outlet connector 30 are normally closed and not conductive.

[0063] In some embodiments, the water jet pressurization device further includes a piston 50, which is configured to reciprocate axially within a piston chamber 11. When the piston 50 moves away from the inlet connector 20 or the outlet connector 30, the pressure in the piston chamber 11 decreases, at which point the first one-way pre-tightening valve 22 opens, allowing external liquid to enter the piston chamber 11 through the inlet connector 20, while the second one-way pre-tightening valve 32 remains closed. When the piston 50 moves closer to the inlet connector 20 or the outlet connector 30, the pressure in the piston chamber 11 increases, at which point the first one-way pre-tightening valve 22 closes, the second one-way pre-tightening valve 32 opens, and the liquid in the piston chamber 11 is output through the outlet connector 30.

[0064] In some embodiments, the first one-way pre-tightening valve 22 includes a first valve ball 221 and a first pre-tightening spring 222; wherein, the first valve ball 221 is disposed in the liquid inlet channel 14, and the first pre-tightening spring 222 is axially disposed between the first valve ball 221 and the pump body 10, and the first pre-tightening spring 222 is configured to allow the first valve ball 221 to fit against the first conical surface 201 in the initial state; thus, in the initial state, the first pre-tightening spring 222 acts on the first valve ball 221, so that the first valve ball 221 always fits against the first conical surface 201 to achieve a seal, and the liquid inlet connector 20 is in a non-conductive state. During operation, when the piston 5 When piston 50 moves away from inlet connector 20, the pressure inside piston chamber 11 decreases, and the external liquid overcomes the preload force of the first preload spring 222, causing the first valve ball 221 to move away from the first conical surface 201. At this time, the inlet connector 20 and piston chamber 11 are connected, and the external liquid enters piston chamber 11 through inlet connector 20. When piston 50 moves closer to inlet connector 20 or outlet connector 30, the pressure inside piston chamber 11 increases. At this time, under the action of liquid pressure and the preload force of the first preload spring 222, the first valve ball 221 is sealed by fitting with the first conical surface 201, and inlet connector 20 is in a non-conductive state.

[0065] In some embodiments, to ensure that the first valve ball 221 is always in a normally closed state in the initial state, the maximum diameter of the first conical surface 201 is limited to be greater than the diameter of the first valve ball 221, so that the first valve ball 221 can move axially, and the minimum diameter of the first conical surface 201 is smaller than the diameter of the first valve ball 221, so that the surface of the first valve ball 221 can fit with the first conical surface 201 to form a seal.

[0066] In some embodiments, during the process of external liquid entering the piston chamber 11 through the inlet connector 20, the first valve ball 221 is pushed open and squeezes the first preload spring 222. To prevent the first valve ball 221 from damaging the first preload spring 222, a first limiting member 23 is also included. The first limiting member 23 is axially disposed inside the first preload spring 222, and the diameter of the first limiting member 23 is smaller than the diameter of the first valve ball 221. At this time, after the first valve ball 221 is pushed open, it can abut against the first limiting member 23 in the axial direction, thereby preventing the first valve ball 221 from damaging the first preload spring 222.

[0067] In some implementations, such as Figure 5 As shown, the first limiting member 23 and the first valve ball 221 are separate structures. The first limiting member 23 is a hollow tubular structure. After the first valve ball 221 is pushed open, it can abut against the first limiting member 23 in the axial direction, thereby preventing the first valve ball 221 from damaging the first preload spring 222.

[0068] In some embodiments, during the opening of the first valve ball 221, to ensure that external liquid can smoothly enter the piston chamber 11, at least one first window 231 is provided on the side wall of the first limiting member 23, such as... Figure 6 As shown, this facilitates fluid flow, improves fluid delivery efficiency, and also enhances emptying efficiency, thereby reducing surgical risks and costs.

[0069] In another embodiment, such as Figure 7 and Figure 8 As shown, the first limiting member 23 and the first valve ball 221 are an integral structure. The first limiting member 23 and the first valve ball 221 form a first step 24 at the connection. One end of the first pre-tightening spring 222 abuts against the first step 24. By designing the first limiting member 23 and the first valve ball 221 as an integral structure, the first limiting member 23 can move synchronously along the axial direction with the first valve ball 221. At the same time, the first pre-tightening spring 222 abuts against the first step 24, which can ensure that the first valve ball 221 is always in contact with the first conical surface 201, so that the liquid inlet connector 20 is in a normally closed state when it is not working.

[0070] In some embodiments, since the first limiting member 23 and the first valve ball 221 are connected as an integral structure, in order to avoid the accumulation of liquid inside the first limiting member 23 and affect the liquid delivery efficiency, the first limiting member 23 is a solid columnar structure. In order to ensure that the external liquid can smoothly enter the piston chamber 11, the end of the first limiting member 23 away from the first valve ball 221 is provided with a first channel 232 that runs radially through it, so as to facilitate the conduction of liquid and improve the liquid delivery efficiency.

[0071] In some embodiments, the second one-way pre-tightening valve 32 includes a second valve ball 321 and a second pre-tightening spring 322. The second valve ball 321 is disposed in the second chamber 13, and the second pre-tightening spring 322 is axially disposed between the second valve ball 321 and the liquid outlet connector 30. The second pre-tightening spring 322 is configured to allow the second valve ball 321 to fit against the second conical surface 16 in the initial state. Thus, in the initial state, the second preload spring 322 acts on the second valve ball 321, ensuring that the second valve ball 321 is always in contact with the second conical surface 16 to achieve a seal, and the liquid outlet connector 30 is in a non-conductive state. During operation, when the piston 50 moves away from the liquid outlet connector 30, the pressure in the piston chamber 11 decreases, and the second valve ball 321 remains in contact with the second conical surface 16 to achieve a seal. When the piston 50 moves towards the liquid outlet connector 30, the pressure in the piston chamber 11 increases. At this time, the high-pressure liquid in the piston chamber 11 overcomes the preload force of the second preload spring 322, causing the second valve ball 321 to move away from the second conical surface 16. At this time, the liquid outlet connector 30 and the piston chamber 11 are connected, and the high-pressure liquid in the piston chamber 11 is output through the liquid outlet connector 30.

[0072] In some embodiments, to ensure that the second valve ball 321 is always in a normally closed state in the initial state, the maximum diameter of the second conical surface 16 is limited to be greater than the diameter of the second valve ball 321, and the minimum diameter of the second conical surface 16 is smaller than the diameter of the second valve ball 321, so that the surface of the second valve ball 321 can fit with the second conical surface 16 to form a seal.

[0073] In some embodiments, during the liquid pressurization output process of the piston chamber 11, the second valve ball 321 is pushed open and squeezes the second preload spring 322. To prevent the second valve ball 321 from damaging the second preload spring 322, a second limiting member 33 is also included. The second limiting member 33 is axially disposed inside the second preload spring 322, and the diameter of the second limiting member 33 is smaller than the diameter of the second valve ball 321. At this time, after the second valve ball 321 is pushed open, it can abut against the second limiting member 33 in the axial direction, thereby preventing the second valve ball 321 from damaging the second preload spring 322.

[0074] In some implementations, such as Figure 5 As shown, the second limiting member 33 and the second valve ball 321 are separate structures. The second limiting member 33 is a hollow tubular structure. After the second valve ball 321 is pushed open, it can abut against the second limiting member 33 in the axial direction, thereby preventing the second valve ball 321 from damaging the second preload spring 322.

[0075] In some embodiments, during the opening of the second valve ball 321, to ensure that the liquid in the piston chamber 11 can enter the liquid outlet connector 30, at least one second window 331 is provided on the side wall of the second limiting member 33, such as... Figure 6 As shown, this facilitates fluid flow, improves fluid delivery efficiency, and also enhances emptying efficiency, thereby reducing surgical risks and costs.

[0076] In another embodiment, such as Figure 7 and Figure 8 As shown, the second limiting member 33 and the second valve ball 321 are an integral structure. The second limiting member 33 and the second valve ball 321 form a second step 34 at the connection. One end of the second pre-tightening spring 322 abuts against the second step 34. By designing the second limiting member 33 and the second valve ball 321 as an integral structure, the second limiting member 33 can move synchronously along the axial direction with the second valve ball 321. At the same time, the second pre-tightening spring 322 abuts against the second step 34, which can ensure that the second valve ball 321 is always in contact with the second conical surface 16, so that the liquid outlet connector 30 is in a normally closed state when not in operation.

[0077] In some embodiments, since the second limiting member 33 and the second valve ball 321 are connected as an integral structure, in order to avoid the accumulation of liquid inside the second limiting member 33 and affect the liquid delivery efficiency, the second limiting member 33 is a solid columnar structure. In order to ensure that the liquid in the piston chamber 11 can enter the liquid outlet connector 30, the end of the second limiting member 33 away from the second valve ball 321 is provided with a second channel 332 that runs radially through it, so as to facilitate the conduction of liquid and improve the liquid delivery efficiency.

[0078] In some embodiments, during the opening of the second valve ball 321, in order to ensure that the high-pressure liquid in the piston chamber 11 can smoothly enter the outlet connector 30 for output, at least one second window 331 is provided on the side wall of the second limiting member 33.

[0079] In some embodiments, the water jet booster device further includes a fixing pin 40, which is configured to fix the inlet connector 20 to the pump body 10; or, the fixing pin 40 is configured to fix the outlet connector 30 to the pump body 10, so as to facilitate the synchronous assembly of the inlet connector 20 and the outlet connector 30.

[0080] In some embodiments, to ensure the airtight connection between the inlet connector 20 and the outlet connector 30 and the pump body 10, the water jet booster device further includes a first sealing ring 21 and a second sealing ring 31. The first sealing ring 21 is disposed on the outer peripheral wall of the inlet connector 20 and is used to seal the inlet connector 20 and the pump body 10, so that no leakage occurs after the inlet connector 20 is connected to the pump body 10. The second sealing ring 31 is disposed on the outer peripheral wall of the outlet connector 30 and is used to seal the outlet connector 30 and the pump body 10, so that no leakage occurs after the outlet connector 30 is connected to the pump body 10.

[0081] The working process of this utility model is as follows: Please refer to... Figures 1-6 When in use, when the piston 50 moves away from the inlet connector 20, the pressure inside the piston chamber 11 decreases, and the external liquid overcomes the preload force of the first preload spring 222, causing the first valve ball 221 to move away from the first conical surface 201. At this time, the inlet connector 20 and the piston chamber 11 are connected, and the external liquid enters the piston chamber 11 through the inlet connector 20. During the liquid inlet process, the first valve ball 221 can abut against the first limiting member 23 in the axial direction, thereby preventing the first valve ball 221 from damaging the first preload spring 222. In addition, due to the decrease in pressure inside the piston chamber 11, the second valve ball 321 always keeps in contact with the second conical surface 16 under the action of the second preload spring 322, and the outlet connector 30 is not connected.

[0082] When the piston 50 moves closer to the inlet connector 20 or the outlet connector 30, the pressure inside the piston chamber 11 increases. At this time, the first valve ball 221, under the action of liquid pressure and the preload force of the first preload spring 222, comes into contact with the first conical surface 201 to achieve a seal, and the inlet connector 20 is in a non-conductive state. As the pressure inside the piston chamber 11 increases, the high-pressure liquid inside the piston chamber 11 overcomes the preload force of the second preload spring 322, causing the second valve ball 321 to move away from the second conical surface 16. At this time, the outlet connector 30 and the piston chamber 11 become conductive, and the high-pressure liquid inside the piston chamber 11 is output through the outlet connector 30. During the liquid discharge process, the second valve ball 321 abuts against the second limiting member 33 in the axial direction, thereby preventing the second valve ball 321 from damaging the second preload spring 322. This enables rapid emptying, improves efficiency, and reduces surgical risks and costs.

[0083] like Figures 7-8 As shown, when the first limiting member 23 and the first valve ball 221 are integrated, and the second limiting member 33 and the second valve ball 321 are integrated, their overall working principle is similar to that of the split structure. The only difference is that the limiting member and the valve ball move together along the axial direction, which will not be repeated here.

[0084] In summary, the water jet pressurization device provided by this utility model embodiment has a first conical surface 201 on the inner wall of the inlet connector 20 near the inlet channel 14, and a first one-way pre-tightening valve 22 between the first conical surface 201 and the pump body 10. In the initial state, the first one-way pre-tightening valve 22 can always fit with the first conical surface 201 to form a normally closed state. Similarly, a second conical surface 16 is provided at the end of the outlet channel 15 near the outlet connector 30, and a second one-way pre-tightening valve 32 is provided between the second conical surface 16 and the outlet connector 30. In the initial state, the second one-way pre-tightening valve 32 can fit with the second conical surface 16 to form a normally closed state. Thus, by applying a one-way pre-tightening effect in the initial state, the secondary evacuation of the pump body 10 can be effectively achieved, and the evacuation efficiency is high, reducing surgical risks and costs, and ensuring the life and health safety of patients.

[0085] The above description is merely a preferred embodiment of this utility model. It should be noted that, for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this utility model, and these improvements and substitutions should also be considered within the protection scope of this utility model. The basic principles, main features, and advantages of this utility model have been shown and described above. For those skilled in the art, it is obvious that this utility model is not limited to the details of the above preferred embodiments. The embodiments should be considered exemplary and non-limiting. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included within this utility model.

[0086] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A water jet pressure intensifier apparatus, characterized by, The utility model relates to a pump body, a first chamber and a second chamber are equipped on one end of the pump body, a liquid inlet channel is communicated between the first chamber and the piston cavity, a liquid outlet channel is communicated between the second chamber and the piston cavity, a liquid inlet connector is installed on one end of the first chamber, a first taper surface is arranged on the inner wall of the liquid inlet channel, a first one-way pre-tightening valve is arranged between the first taper surface and the pump body, the first one-way pre-tightening valve is configured to be in close contact with the first taper surface in the initial state to form a normally closed state, a liquid outlet connector is installed on one end of the second chamber, a second taper surface is arranged on one end of the liquid outlet channel, and a second one-way pre-tightening valve is arranged between the second taper surface and the liquid outlet connector, the second one-way pre-tightening valve is configured to be in close contact with the second taper surface in the initial state to form a normally closed state. The first one-way pre-tightening valve comprises a first valve ball arranged in the liquid inlet channel and a first pre-tightening spring arranged between the first valve ball and the pump body in the axial direction, and the first pre-tightening spring is configured to make the first valve ball in close contact with the first taper surface in the initial state. The maximum diameter of the first taper surface is greater than the diameter of the first valve ball, and the minimum diameter of the first taper surface is less than the diameter of the first valve ball. The utility model further comprises a first limiting part arranged inside the first pre-tightening spring in the axial direction, and the diameter of the first limiting part is less than the diameter of the first valve ball. The first limiting part and the first valve ball are in a split structure, the first limiting part is in a hollow tubular structure, and at least one first window is arranged on the side wall of the first limiting part. The first limiting part and the first valve ball are in an integrated structure, the first limiting part is in a solid columnar structure, a first step is formed at the connection between the first limiting part and the first valve ball, and one end of the first pre-tightening spring is abutted to the first step.

2. The waterjet booster of claim 1, wherein, The first limiting part is provided with a first channel penetrating in the radial direction at one end away from the first valve ball. The second one-way pre-tightening valve comprises a second valve ball arranged in the second chamber and a second pre-tightening spring arranged between the second valve ball and the liquid outlet connector in the axial direction, and the second pre-tightening spring is configured to make the second valve ball in close contact with the second taper surface in the initial state. The maximum diameter of the second taper surface is greater than the diameter of the second valve ball, and the minimum diameter of the second taper surface is less than the diameter of the second valve ball.

3. The waterjet pressure boosting device of claim 2, wherein, The utility model further comprises a second limiting part arranged inside the second pre-tightening spring in the axial direction, and the diameter of the second limiting part is less than the diameter of the second valve ball.

4. The waterjet pressure boosting device of claim 2, wherein, The second limiting part and the second valve ball are in a split structure, the second limiting part is in a hollow tubular structure, and at least one second window is arranged on the side wall of the second limiting part. ​ 5. The waterjet pressure boosting device of claim 4, wherein, ​ 6. The waterjet pressure boosting device of claim 4, wherein, ​ ​ 7. The waterjet booster of claim 1, wherein, ​ ​ ​ 8. The waterjet pressure boosting device of claim 7, wherein, ​ 9. The waterjet pressure boosting device of claim 7, wherein, ​ ​ 10. The waterjet pressure boosting device of claim 9, wherein, ​ 11. The waterjet booster of claim 9, wherein, The second limiting piece is an integral structure with the second valve ball, the second limiting piece is a solid columnar structure, the second limiting piece and the second valve ball form a second step at a connection position, and one end of the second pre-tightening spring is abutted to the second step; An end of the second limiting piece away from the second valve ball is provided with a second channel penetrating in a radial direction.

12. The waterjet booster of claim 1, wherein, Further comprising: A fixing pin configured to fix the liquid inlet joint with the pump body; Alternatively, the fixing pin is configured to fix the liquid outlet joint with the pump body.

13. The waterjet booster of claim 1, wherein, Further comprising: A first sealing ring provided on an outer circumferential wall of the liquid inlet joint, the first sealing ring being used to seal the liquid inlet joint and the pump body; And, A second sealing ring provided on an outer circumferential wall of the liquid outlet joint, the second sealing ring being used to seal the liquid outlet joint and the pump body.

14. The waterjet booster of claim 1, wherein, Further comprising: A piston configured to reciprocate in an axial direction within the piston cavity.

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