Pressure stabilizing pump

Abstract

The invention relates to the technical field of medical instruments, and particularly discloses a pressure stabilizing pump which comprises a shell, a piston assembly and an energy storage pressure stabilizing cabin. At least one piston chamber is arranged in the shell, and a liquid inlet flow channel and a liquid outlet flow channel which are communicated with the piston chamber are further arranged in the shell; the piston assembly is movably arranged in the piston chamber; and the energy storage pressure stabilizing cabin is communicated with the liquid outlet flow channel. By arranging the energy storage pressure stabilizing cabin, part of liquid enters the energy storage pressure stabilizing cabin in the liquid outlet process, self-sealing constant-volume air in the energy storage pressure stabilizing cabin is used for conducting compression energy storage, and when the liquid pressure of a liquid outlet flow channel is reduced, energy storage is achieved. The compressed air in the energy storage pressure stabilizing cabin pushes out the liquid in the energy storage pressure stabilizing cabin to compensate the output pressure of the liquid outlet flow channel, that is, the elasticity of the compressed air in the energy storage pressure stabilizing cabin is utilized to carry out pressure negative feedback to adjust the pressure precision, so that the pressure fluctuation range is reduced to meet the requirement for selective resection of different tissues in the operation process; and the use reliability of the product is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a stable pressure pump. BACKGROUND

[0002] In the prior art, some surgical devices for forming liquid jets impact the surgical site with high-speed jet liquid to clean and cut the tissue. There are two ways for the existing medical pressure devices:

[0003] One way is to use a single pump body. Since the piston movement has a reversing cycle, the pressure formed by the output water flow forms a periodic fluctuation. For human tissues with different tissue strengths such as blood vessels and nerves, when the pressure fluctuation is too large, the impact pressure range of the water flow is large, which cannot meet the needs of selective cutting of different tissues during the operation, and the single pump has low efficiency due to the reversing cycle.

[0004] In order to meet the needs of the operation by reducing the water flow pressure fluctuation to improve the pressure accuracy, another way is to use a large-capacity double-body pump. The double motor provides power to slowly pressurize to achieve the purpose of controlling the pressure accuracy. However, the control logic of the entire control system is complex due to the double motor controlling the pump stroke, which reduces the product use reliability. SUMMARY

[0005] The technical problem to be solved by the present application is how to overcome the problems of large pressure fluctuation range and low control reliability in the prior art.

[0006] In order to solve the above technical problems, the present application provides a stable pressure pump, comprising:

[0007] a housing, at least one piston chamber is arranged in the housing, and a liquid inlet flow channel and a liquid outlet flow channel in communication with the piston chamber are further arranged in the housing;

[0008] a piston assembly movably arranged in the piston chamber; and

[0009] an energy storage pressure stabilizing cabin in communication with the liquid outlet flow channel.

[0010] Further preferably, an energy storage cavity is arranged in the energy storage pressure stabilizing cabin, and a communication port is arranged at the bottom of the energy storage pressure stabilizing cabin, which is used to communicate the energy storage cavity and the liquid outlet flow channel.

[0011] Further preferably, it further comprises:

[0012] The adapter component is provided with an inlet channel and an outlet channel, the inlet channel is connected with an inlet pipe and an inlet joint, the outlet channel is connected with an outlet pipe and an outlet joint, the inlet pipe is communicated with the inlet flow channel, and the outlet pipe is communicated with the outlet flow channel; in use, the energy storage pressure stabilizing cabin is placed above the adapter component, and the lowest height of the energy storage cavity is higher than the height of the outlet channel.

[0013] Further preferably, the piston assembly comprises:

[0014] A piston support rod is arranged in the piston chamber.

[0015] A piston cap is arranged at one end of the piston support rod close to the inlet flow channel.

[0016] An elastic buckle is arranged at one end of the piston support rod away from the inlet flow channel.

[0017] Further preferably, the diameter of one end of the piston support rod close to the inlet flow channel is 0.1-10 mm.

[0018] Further preferably, the outer peripheral wall of the piston support rod is provided with a sealing ring, which is in interference connection with the inner wall of the piston chamber.

[0019] Further preferably, the adapter component further comprises:

[0020] A one-way inlet structure is used to open the inlet pipe when the piston chamber is in a negative pressure state, and to block the inlet pipe when the piston chamber is in a pressure-increasing state; and

[0021] A one-way outlet structure is used to block the outlet pipe when the piston chamber is in a negative pressure state, and to open the outlet pipe when the piston chamber is in a pressure-increasing state.

[0022] Further preferably, the one-way inlet structure is an inlet disc, which is arranged at one end of the inlet pipe close to the inlet flow channel; and the one-way outlet structure is an outlet disc, which is arranged at one end of the outlet pipe close to the outlet flow channel.

[0023] Further preferably, the one-way inlet structure comprises a first ball groove arranged in the side wall of the inlet joint, the first ball groove is communicated with the inlet pipe, an inlet valve ball is arranged in the first ball groove, and a first tapered notch is formed at one end of the first ball groove away from the inlet pipe, the inlet valve ball is configured to block the inlet joint when matched with the first tapered notch.

[0024] More preferably, the one-way liquid outlet structure includes a second ball groove located at the end of the liquid outlet pipe away from the piston chamber. The second ball groove is connected to the liquid outlet connector. A liquid outlet valve ball is provided in the second ball groove. A second conical groove is formed at the end of the second ball groove away from the liquid outlet connector. When the liquid outlet valve ball is configured to cooperate with the second conical groove, it blocks the liquid outlet connector.

[0025] The pressure-stabilizing pump provided by this invention has the following advantages compared with the prior art:

[0026] This invention features a piston chamber within a housing, housing a piston assembly. Driving the piston assembly enables negative pressure suction and pressurized discharge within the piston chamber, creating a pressurized jet of liquid that impacts the surgical site for tissue cleaning or removal. An energy storage and stabilizing chamber is incorporated into the discharge path. During discharge, some liquid enters this chamber, where self-sealing, fixed-capacity air is compressed and stored. When the liquid pressure in the discharge channel decreases, the compressed gas in the chamber pushes out the liquid to compensate for the discharge pressure. This utilizes the elasticity of the compressed air within the chamber for negative pressure feedback, adjusting pressure accuracy and reducing pressure fluctuations. This meets the needs of selective tissue removal during surgery, improving product reliability. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a pressure-stabilizing pump described in this embodiment.

[0028] Figure 2 This is a top view of a pressure-stabilizing pump as described in this embodiment.

[0029] Figure 3 This is a partial structural diagram of a pressure-stabilizing pump described in this embodiment.

[0030] Figure 4 This is a schematic diagram of the piston assembly described in this embodiment.

[0031] Figure 5 This is the embodiment. Figure 2 A sectional view of section AA in the middle.

[0032] Figure 6 This is the embodiment. Figure 5 Cross-sectional view of the energy storage and stabilizing chamber at section BB (before energy storage).

[0033] Figure 7 This is the embodiment. Figure 5 Cross-sectional view of the energy storage and stabilizing chamber at section BB (after energy storage).

[0034] Figure 8This is a schematic diagram of a unidirectional liquid inlet structure in another embodiment.

[0035] Figure 9 This is a schematic diagram of a unidirectional liquid outlet structure in another embodiment.

[0036] In the picture:

[0037] 10. Shell; 11. Piston chamber; 12. Liquid outlet channel; 13. Liquid inlet channel;

[0038] 20. Adapter components;

[0039] 30. Liquid inlet pipe; 31. Liquid inlet disc;

[0040] 40. Discharge pipe; 41. Discharge disc; 42. Second conical groove;

[0041] 50. Liquid inlet connector; 51. First ball groove; 52. Liquid inlet valve ball; 53. First conical groove opening;

[0042] 60. Liquid outlet connector; 61. Second ball groove; 62. Liquid outlet valve ball;

[0043] 70. Energy storage and pressure stabilization chamber; 71. Energy storage cavity; 72. Connecting port;

[0044] 80. Piston assembly; 81. Piston support rod; 82. Piston cap; 83. Spring snap; 84. Sealing ring;

[0045] 90. Putting rod. Detailed Implementation

[0046] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0047] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" used to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention 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 invention.

[0048] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections 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 invention based on the specific circumstances.

[0050] In this invention, 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," "over," and "on top" of 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.

[0051] 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.

[0052] Example 1

[0053] like Figures 1-7 As shown, this embodiment provides a pressure-stabilizing pump, including a housing 10, an adapter 20, a piston assembly 80, and an energy storage and pressure-stabilizing chamber 70.

[0054] In a specific embodiment, the housing 10 is provided with at least one piston chamber 11, and the housing 10 is also provided with an inlet channel 13 and an outlet channel 12 communicating with the piston chamber 11. The piston assembly 80 is movably disposed within the piston chamber 11. In use, the push rod 90 is extended into the piston chamber 11 and connected to the piston assembly 80, so that the piston assembly 80 can be driven to move within the piston chamber 11 by the push rod 90, thereby realizing the change of space in the piston chamber 11, so as to switch between negative pressure and pressurized state. Thus, by providing a piston chamber 11 within the housing 10 and a piston assembly 80 within the piston chamber 11, the piston chamber 11 can be moved by driving the piston assembly 80. Negative pressure suction and pressurized discharge create a jet of liquid that impacts the surgical site to clean or remove tissue. Specifically, when the push rod 90 moves the piston assembly 80 along the piston chamber 11 away from the inlet channel 13, the space in the piston chamber 11 increases, and the piston chamber 11 is under negative pressure. At this time, external liquid enters the piston chamber 11 through the inlet channel 13. When the push rod 90 moves the piston assembly 80 along the piston chamber 11 closer to the inlet channel 13, the space in the piston chamber 11 decreases, the liquid is compressed, and the compressed liquid is output to the surgical instruments through the outlet channel 12 to form a high-speed liquid jet that impacts the surgical site, thereby achieving the cleaning or removal of the target tissue.

[0055] In some embodiments, the push rod 90 can be manually driven or mechanically driven. Mechanical driving includes, but is not limited to, motor driving, cylinder driving, cam driving, etc. For those skilled in the art, several improvements and substitutions can be made 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.

[0056] In some embodiments, the housing 10 is provided with two piston chambers 11, each piston chamber 11 is provided with a piston assembly 80, and both piston chambers 11 are connected to the liquid outlet channel 12 and the liquid inlet channel 13; thus, the pressure can be further stabilized by the double push rods 90.

[0057] In some embodiments, the adapter 20 is provided with an inlet channel and an outlet channel. The inlet channel is connected to an inlet pipe 30 and an inlet connector 50, and the outlet channel is connected to an outlet pipe 40 and an outlet connector 60. The inlet pipe 30 is connected to the inlet flow channel 13, and the outlet pipe 40 is connected to the outlet flow channel 12. An energy storage and stabilizing chamber 70 is provided in the adapter 20 and is connected to the outlet channel. Thus, by setting the energy storage and stabilizing chamber 70 in the path of the outlet channel, some liquid enters the energy storage and stabilizing chamber 70 during the liquid discharge process. The self-sealing fixed-capacity air in the energy storage and stabilizing chamber 70 is used for compression and energy storage. When the liquid pressure in the outlet channel decreases, the compressed gas in the energy storage and stabilizing chamber 70 pushes out the liquid in the energy storage and stabilizing chamber 70 to compensate for the output pressure of the outlet channel. That is, the elasticity of the compressed air in the energy storage and stabilizing chamber 70 is used to adjust the pressure accuracy through pressure negative feedback, thereby reducing the pressure fluctuation range to meet the needs of selective resection of different tissues during surgery and improving the reliability of the product.

[0058] In addition, the adapter 20 facilitates the assembly of the housing 10, the inlet pipe 30, the outlet pipe 40, the inlet connector 50, and the outlet connector 60, thereby reducing the complexity of the structure.

[0059] In some embodiments, the energy storage and stabilizing chamber 70 has an energy storage cavity 71 inside, and a connecting port 72 is provided at the bottom of the energy storage and stabilizing chamber 70. The connecting port 72 is used to connect the energy storage cavity 71 and the liquid outlet channel. In use, the energy storage and stabilizing chamber 70 is placed above the adapter 20, and the lowest height of the energy storage cavity 71 is higher than the height of the liquid outlet channel. In this way, when the liquid outlet channel is filled with liquid, a certain volume of air is sealed in the energy storage cavity 71. The sealed air stabilizes the pressure fluctuation through volume change. The energy storage and stabilizing chamber 70 is set upward so that the air in the energy storage cavity 71 is not discharged after water sealing. When the liquid pressure in the liquid outlet channel increases, some liquid enters the energy storage cavity 71 through the connecting port 72. Since the liquid occupies part of the internal volume of the energy storage cavity 71, the air in the energy storage cavity 71 is compressed. When the pressure in the liquid outlet channel decreases, the liquid in the energy storage cavity 71 compensates for the liquid outlet channel under the action of the compressed air inside the energy storage cavity 71. That is, the elasticity of the compressed air is used to adjust the pressure accuracy through pressure negative feedback, thereby stabilizing the pressure fluctuation.

[0060] In other embodiments, the capacity of compressed air can be adjusted by adjusting the capacity of the energy storage chamber 71, thereby adjusting the pressure accuracy range to meet different needs.

[0061] In some embodiments, the piston assembly 80 includes a piston support rod 81, a piston cap 82, and an elastic buckle 83. The piston support rod 81 is located in the piston chamber 11, the piston cap 82 is located at the end of the piston support rod 81 near the liquid inlet channel 13, and the elastic buckle 83 is located at the end of the piston support rod 81 away from the liquid inlet channel 13. Thus, when the push rod 90 extends into the piston chamber 11, the end of the push rod 90 is locked by the elastic buckle 83, so that the entire piston assembly 80 can be driven to reciprocate along the piston chamber 11 by the push rod 90. The piston cap 82 can enhance the sealing effect between the piston support rod 81 and the inner wall of the piston chamber 11, avoiding air or liquid leakage, and further preventing pressure fluctuations.

[0062] In some embodiments, there are multiple elastic buckles 83, which are circumferentially spaced at the end of the piston support rod 81 away from the liquid inlet channel 13, and the outer diameter of the piston support rod 81 is not greater than the outer diameter of the elastic buckle 83. Preferably, there are four elastic buckles 83 in this application, and the circumferential diameter defined by the four elastic buckles 83 gradually increases from the end closer to the piston support rod 81 to the end away from the piston support rod 81, so that the elastic buckles 83 can always abut against the inner wall of the piston chamber 11, thereby limiting the radial movement of the piston assembly 80. At the same time, the use of multiple elastic buckles 83 can lock the push rod 90 when it acts on the piston support rod 81, which can solve the problem of quick connection of pistons in small-diameter piston chambers.

[0063] In some embodiments, the piston cap 82 is a bowl-shaped structure made of elastic material, which can deform under pressure to enhance the sealing effect. In some preferred embodiments, the piston cap 82 is made of molding materials such as Teflon, nylon, and POM, and is formed by processes such as injection molding, compression molding, and machining.

[0064] In some embodiments, the diameter of the piston support rod 81 near the liquid inlet channel 13 is 0.1mm-10mm. In a preferred embodiment, the diameter of the piston support rod 81 near the liquid inlet channel 13 is 0.5mm-5mm; this design achieves a small displacement of the pressure-stabilizing pump, while increasing the frequency of the push rod 90 reduces the pressure fluctuation range.

[0065] In some embodiments, a sealing ring 84 is provided on the outer peripheral wall of the piston support rod 81, and the sealing ring 84 is interference-fitted with the inner wall of the piston chamber 11. The addition of the sealing ring 84 can provide guiding support when the piston support rod 81 is under force and moves. On the other hand, when the piston support rod 81 moves away from the push rod 90, it can perform secondary sealing on the liquid sealed by the piston cap 82. When the piston support rod 81 moves closer to the push rod 90, the piston chamber 11 is under negative pressure, and the sealing ring 84 can seal and prevent gas from entering, so as to avoid affecting the liquid inlet, thereby further playing a role in stabilizing pressure.

[0066] In some implementations, the sealing ring 84 can be circular, Y-shaped, or C-shaped.

[0067] In some embodiments, the pressure-stabilizing pump further includes a one-way inlet structure and a one-way outlet structure. The one-way inlet structure is used to open the inlet pipe 30 when the piston chamber 11 is under negative pressure and to block the inlet pipe 30 when the piston chamber 11 is under pressurized. The one-way outlet structure is used to block the outlet pipe 40 when the piston chamber 11 is under negative pressure and to open the outlet pipe 40 when the piston chamber 11 is under pressurized. By setting the one-way inlet and one-way outlet structures, the start-up and closing characteristics of the pressure-stabilizing pump can be improved. When the piston support rod 81 moves towards the push rod 90, the piston chamber 11 is under negative pressure, and the one-way inlet structure... When the one-way liquid outlet structure is closed, the liquid enters the liquid inlet channel in the adapter 20 through the liquid inlet connector 50, then enters the liquid inlet flow channel 13 through the liquid inlet pipe 30, and finally enters the piston chamber 11. Conversely, when the piston support rod 81 moves away from the push rod 90, the pressure in the piston chamber 11 increases. At this time, the one-way liquid outlet structure opens and the one-way liquid inlet structure closes. Under pressure, the liquid enters the liquid outlet pipe 40 through the liquid outlet flow channel 12, and then is transported to the liquid outlet connector 60 through the liquid outlet channel in the adapter 20. Finally, the liquid outlet connector 60 is transported to the surgical instruments to form a high-speed liquid jet impacting the surgical site.

[0068] Example 2

[0069] The difference between this embodiment and Embodiment 1 is that:

[0070] like Figure 3 and Figure 5 As shown, the one-way liquid inlet structure is a liquid inlet disc 31, which is located at one end of the liquid inlet pipe 30 near the liquid inlet channel 13; the one-way liquid outlet structure is a liquid outlet disc 41, which is located at one end of the liquid outlet pipe 40 near the liquid outlet channel 12. The structure and function of the liquid inlet disc 31 and the liquid outlet disc 41 are the same as or similar to those of the medical diaphragm pressure valve and its connector disclosed in Chinese Invention Patent (Applicant: Huizhou Haizhuo Kesai Medical Co., Ltd., Application No.: 2024106479846), and will not be repeated here.

[0071] Example 3

[0072] The difference between this embodiment and Embodiment 2 is as follows:

[0073] like Figure 8As shown, the one-way liquid inlet structure includes a first ball groove 51 located on the side wall of the liquid inlet connector 50. The first ball groove 51 is connected to the liquid inlet pipe 30. A liquid inlet valve ball 52 is provided inside the first ball groove 51. A first conical groove 53 is formed at the end of the first ball groove 51 away from the liquid inlet pipe 30. When the liquid inlet valve ball 52 is configured to cooperate with the first conical groove 53, it blocks the liquid inlet connector 50. It should be noted that the width of the first ball groove 51 is greater than the diameter of the liquid inlet valve ball 52. Thus, when the piston chamber 11 is under negative pressure, liquid enters the first ball groove 51 through the liquid inlet connector 50. Within 1, under the action of the liquid flow direction, the inlet valve ball 52 moves away from the first conical groove 53. At this time, the inlet connector 50 forms a passage with the piston chamber 11, and the liquid enters the piston chamber 11. When the liquid in the piston chamber 11 is in a compressed state, the inlet valve ball 52 is pushed into the first conical groove 53 by the thrust of the high-pressure liquid. At this time, the spherical surface of the inlet valve ball 52 forms a line seal with the first conical groove 53, and the inlet connector 50 is not connected to the piston chamber 11, thereby achieving the effect of unidirectional liquid inlet.

[0074] like Figure 9 As shown, the unidirectional liquid outlet structure includes a second ball groove 61 located at the end of the liquid outlet pipe 40 away from the piston chamber 11. The second ball groove 61 communicates with the liquid outlet connector 60. A liquid outlet valve ball 62 is provided inside the second ball groove 61. A second conical groove 42 is formed at the end of the second ball groove 61 away from the liquid outlet connector 60. When the liquid outlet valve ball 62 is configured to cooperate with the second conical groove 42, it blocks the liquid outlet connector 60. It should be noted that the width of the second ball groove 61 is greater than the width of the liquid outlet valve ball 62, thereby... When the piston chamber 11 is under negative pressure, the outlet valve ball 62 enters the second conical groove 42 under the action of negative pressure. The spherical surface of the outlet valve ball 62 forms a line seal with the second conical groove 42, and the outlet connector 60 is not connected to the piston chamber 11. When the liquid in the piston chamber 11 is under compression, the outlet valve ball 62 moves away from the second conical groove 42 under the thrust of the high-pressure liquid. At this time, the piston chamber 11 is connected to the outlet connector 60, thereby achieving the effect of unidirectional liquid discharge.

[0075] In some embodiments, the taper of the first conical slot 53 and the second conical slot 42 is 55°-160°.

[0076] In this embodiment, the use of inlet valve ball 52 and outlet valve ball 62 in conjunction with the conical groove can improve the valve's opening and closing characteristics and ensure the accuracy of the pressure adjustment feedback of the pressure stabilizing pump.

[0077] Example 4

[0078] like Figure 3 and Figure 9As shown, the one-way liquid inlet structure of this embodiment adopts the method of embodiment 2, that is, the one-way liquid inlet structure is a liquid inlet disc 31, which is located at one end of the liquid inlet pipe 30 near the liquid inlet flow channel 13; the one-way liquid outlet structure of this embodiment adopts the method of embodiment 3, that is, the one-way liquid outlet structure includes a second ball groove 61 located at the end of the liquid outlet pipe 40 away from the piston chamber 11. The second ball groove 61 is connected to the liquid outlet connector 60. A liquid outlet valve ball 62 is provided in the second ball groove 61. A second conical groove 42 is formed at the end of the second ball groove 61 away from the liquid outlet connector 60. When the liquid outlet valve ball 62 is configured to cooperate with the second conical groove 42, it blocks the liquid outlet connector 60. In this way, the combination of the liquid inlet disc 31 and the liquid outlet valve ball 62 can also improve the opening and closing characteristics of the valve and ensure the accuracy of the pressure adjustment feedback of the pressure stabilizing pump.

[0079] Example 5

[0080] The difference between this embodiment and embodiment 4 is that:

[0081] like Figure 3 and Figure 8 As shown, the one-way liquid inlet structure of this embodiment adopts the method of embodiment 3, that is, the one-way liquid inlet structure includes a first ball groove 51 provided on the side wall of the liquid inlet connector 50. The first ball groove 51 is connected to the liquid inlet pipe 30. A liquid inlet valve ball 52 is provided in the first ball groove 51. A first conical groove 53 is formed at the end of the first ball groove 51 away from the liquid inlet pipe 30. When the liquid inlet valve ball 52 is configured to cooperate with the first conical groove 53, it blocks the liquid inlet connector 50. The one-way liquid outlet structure of this embodiment adopts the method of embodiment 2, that is, the one-way liquid outlet structure is a liquid outlet disc 41. The liquid outlet disc 41 is provided at the end of the liquid outlet pipe 40 near the liquid outlet flow channel 12. In this way, the combination of the liquid outlet disc 41 and the liquid inlet valve ball 52 can also improve the opening and closing characteristics of the valve and ensure the accuracy of the pressure adjustment feedback of the pressure stabilizing pump.

[0082] In summary, the present invention provides a pressure-stabilizing pump that, by setting a piston chamber 11 within a housing 10 and a piston assembly 80 within the piston chamber 11, can achieve negative pressure suction and pressurized discharge of liquid in the piston chamber 11 by driving the piston assembly 80, thereby forming a pressurized jet of liquid to impact the surgical site for cleaning or removal of tissue. By setting an energy storage and pressure-stabilizing chamber 70 in the path of the liquid outlet channel, some liquid enters the energy storage and pressure-stabilizing chamber 70 during the liquid outlet process. The self-sealing, fixed-capacity air within the energy storage and pressure-stabilizing chamber 70 is compressed and stored. When the liquid pressure in the liquid outlet channel decreases, the compressed gas in the energy storage and pressure-stabilizing chamber 70 pushes out the liquid within the energy storage and pressure-stabilizing chamber 70 to compensate for the output pressure of the liquid outlet channel. That is, the elasticity of the compressed air within the energy storage and pressure-stabilizing chamber 70 is used for pressure negative feedback to adjust the pressure accuracy, thereby reducing the pressure fluctuation range to meet the needs of selective removal of different tissues during surgery and improving the reliability of the product.

[0083] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various 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. The basic principles, main features, and advantages of the present invention have been shown and described above. It is obvious to those skilled in the art that the present invention is not limited to the details of the above preferred embodiments. The embodiments should be considered exemplary and non-limiting. The scope of the present invention 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 equivalents of the claims be included within the present invention.

[0084] 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 pressure-stabilizing pump, characterized in that, include: The housing has at least one piston chamber inside, and the housing also has an inlet flow channel and an outlet flow channel communicating with the piston chamber; Piston assembly, the piston assembly being movably disposed within the piston chamber; and An energy storage and pressure stabilizing chamber is connected to the liquid outlet channel.

2. A pressure-stabilizing pump according to claim 1, characterized in that, The energy storage and pressure stabilizing chamber has an energy storage cavity inside, and a connecting port is provided at the bottom of the energy storage and pressure stabilizing chamber. The connecting port is used to connect the energy storage cavity and the liquid outlet channel.

3. A pressure-stabilizing pump according to claim 1, characterized in that, Also includes: The adapter includes an energy storage and pressure stabilizing chamber located within it. The adapter contains an inlet channel and an outlet channel. The inlet channel is connected to an inlet pipe and an inlet connector, and the outlet channel is connected to an outlet pipe and an outlet connector. The inlet pipe communicates with the inlet flow channel, and the outlet pipe communicates with the outlet flow channel. During use, the energy storage and pressure stabilizing chamber is positioned above the adapter, and the minimum height of the energy storage chamber is higher than the height of the outlet channel.

4. A pressure-stabilizing pump according to claim 1, characterized in that, The piston assembly includes: A piston support rod is disposed in the piston chamber; A piston cap, wherein the piston cap is disposed at one end of the piston support rod near the liquid inlet channel; and An elastic buckle is provided at the end of the piston support rod away from the liquid inlet channel.

5. A pressure-stabilizing pump according to claim 4, characterized in that, There are multiple elastic buckles, which are circumferentially spaced at one end of the piston support rod away from the liquid inlet channel. The outer diameter of the piston support rod is not greater than the outer diameter of the elastic buckle.

6. A pressure-stabilizing pump according to claim 4, characterized in that, The diameter of the piston support rod at the end near the liquid inlet channel is 0.1mm-10mm.

7. A pressure-stabilizing pump according to claim 4, characterized in that, The outer peripheral wall of the piston support rod is provided with a sealing ring, and the sealing ring is interference-fitted with the inner wall of the piston chamber.

8. A pressure-stabilizing pump according to claim 3, characterized in that, Also includes: A one-way liquid inlet structure, wherein the one-way liquid inlet structure is used to open the liquid inlet pipe when the piston chamber is under negative pressure, and to block the liquid inlet pipe when the piston chamber is under pressurized; and A one-way liquid outlet structure is provided, which is used to block the liquid outlet pipe when the piston chamber is under negative pressure and to open the liquid outlet pipe when the piston chamber is under pressurized.

9. A pressure-stabilizing pump according to claim 8, characterized in that, The one-way liquid inlet structure is a liquid inlet disc, which is located at one end of the liquid inlet pipe near the liquid inlet channel; the one-way liquid outlet structure is a liquid outlet disc, which is located at one end of the liquid outlet pipe near the liquid outlet channel.

10. A pressure-stabilizing pump according to claim 8, characterized in that, The one-way liquid inlet structure includes a first ball groove disposed on the side wall of the liquid inlet connector. The first ball groove is connected to the liquid inlet pipe. A liquid inlet valve ball is disposed in the first ball groove. A first conical groove is formed at the end of the first ball groove away from the liquid inlet pipe. When the liquid inlet valve ball is configured to cooperate with the first conical groove, it blocks the liquid inlet connector.

11. A pressure-stabilizing pump according to claim 8, characterized in that, The one-way liquid outlet structure includes a second ball groove located at the end of the liquid outlet pipe away from the piston chamber. The second ball groove is connected to the liquid outlet connector. A liquid outlet valve ball is provided in the second ball groove. A second conical groove is formed at the end of the second ball groove away from the liquid outlet connector. When the liquid outlet valve ball is configured to cooperate with the second conical groove, it blocks the liquid outlet connector.

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