A flush conduit with variable water beam state

Abstract

The application discloses a water beam state variable flushing catheter, and relates to the technical field of medical devices, which can solve the problem that the existing flushing catheter can only perform perfusion flushing and has single function. The water beam state variable flushing catheter comprises a thin catheter with a liquid flow channel, and further comprises a nozzle assembly used for switching the water beam spraying state according to the internal pressure of the liquid flow channel, wherein the nozzle assembly is fixed in the thin catheter and arranged close to the liquid outlet of the thin catheter.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a flushing catheter with variable water jet state. Background Technology

[0002] Endoscopic irrigation catheters are widely used in endoscopic diagnosis and treatment. Their main function is to enter the human body through the endoscope channel to perform irrigation and flushing operations on the target area in order to maintain a clear surgical field and a clean surgical environment.

[0003] The terminal orifice diameter of existing irrigation catheters is usually fixed, which results in a relatively fixed water jet pattern. Therefore, the function of existing irrigation catheters is relatively limited. When irrigation, high-pressure irrigation, or atomized drug spraying is required, clinicians can only manually change different models of irrigation catheters, which makes the clinical operation process more cumbersome, prolongs the operation time and process, and increases the surgical risk.

[0004] Based on the above background, the inventors designed a flushing conduit with variable water jet state to solve at least one of the above problems, and thus, this application is filed. Utility Model Content

[0005] The purpose of this application is to provide a flushing conduit with variable water jet state, which solves the problem that existing flushing conduits can only perform irrigation flushing and have a single function.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following solution: This application provides a flushing conduit with variable water jet state, including a thin conduit with a liquid flow channel inside, and a nozzle assembly for switching the water jet ejection state according to the internal pressure of the liquid flow channel. The nozzle assembly is fixed inside the thin conduit and disposed near the liquid outlet of the thin conduit.

[0007] Optionally, the nozzle assembly includes a sliding nozzle, a reset member, and a fixed nozzle, which are sequentially arranged in the thin conduit along the liquid flow direction. The fixed nozzle is fixed in the thin conduit, and the sliding nozzle is slidably connected to the thin conduit along its axial direction. The fixed nozzle is provided with a low-pressure irrigation hole, and the sliding nozzle is provided with a high-pressure jet hole. The cross-sectional area of ​​the low-pressure irrigation hole is larger than the cross-sectional area of ​​the high-pressure jet hole, and the high-pressure jet hole is set through the sliding nozzle. The sliding nozzle is also equipped with a low-pressure irrigation channel; When the liquid flow channel is under high pressure, the sliding nozzle presses against the fixed nozzle, the high-pressure jet hole and the low-pressure irrigation hole are connected to each other, and the low-pressure irrigation tank and the low-pressure irrigation hole are disconnected from each other. When the liquid flow channel is under low pressure, both the high-pressure jet orifice and the low-pressure irrigation tank are connected to each other.

[0008] Optionally, the fixed nozzle and the sliding nozzle are respectively provided with matching guide grooves and guide sections on the sides that are close to each other, and the guide grooves are connected to the low-pressure irrigation hole and are coaxially arranged. When the liquid flow channel is under high pressure, the high-pressure jet orifice is inserted into the low-pressure injection orifice.

[0009] Optionally, both the guide groove and the guide section are truncated cone-shaped.

[0010] Optionally, the sliding nozzle includes a main support section, and low-pressure irrigation channels are distributed on the outer peripheral wall of the main support section.

[0011] Optionally, the nozzle assembly may further include a spiral atomizing element disposed within a high-pressure jet orifice.

[0012] Optionally, the reset element is a reset spring.

[0013] Optionally, the high-pressure jet orifices are provided in multiple portions and are evenly distributed on the sliding nozzle.

[0014] Optionally, the thin conduit is provided with an installation annular groove at one end near its outlet; The nozzle assembly is located within the mounting ring groove.

[0015] Optionally, it also includes interconnected thick conduits and fluid line connectors, as well as protective sleeves; The end of the thin tube furthest from the outlet is inserted into the thick tube, and a protective sleeve is fixed at the connection point between the thin and thick tubes.

[0016] The beneficial effects of this utility model are: I. This application can switch between different working states according to the different pressures in the liquid flow channel. When the liquid flow channel is in a low-pressure state, the liquid pressure flowing out of the outlet of the thin catheter is relatively low, allowing doctors to perform irrigation and flushing operations. When the liquid flow channel is in a high-pressure state, the liquid in the liquid flow channel is sprayed out directly through the high-pressure jet hole, and the liquid pressure sprayed out of the outlet of the thin catheter is relatively high, allowing doctors to perform clinical operations such as fine flushing or water injection.

[0017] Second, this application only requires controlling the liquid pressure inside the thin catheter to switch its working state, so that doctors do not need to remove the irrigation catheter and replace it with another type of irrigation catheter during clinical operation. This not only conforms to the operation intuition, but also saves the clinician's operation time and reduces the surgical risk.

[0018] Third, this application only sets the nozzle assembly near the liquid outlet of the thin conduit, which has lower modification and material costs for existing production lines and is conducive to widespread adoption. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an embodiment of this application.

[0020] Figure 2 This is a cross-sectional structural diagram of an embodiment of this application.

[0021] Figure 3 for Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0022] Figure 4 This is a three-dimensional structural diagram of the sliding nozzle in an embodiment of this application.

[0023] Explanation of reference numerals in the attached diagram: 1-Thin conduit, 11-Liquid flow channel, 111-Outlet, 12-Mounting ring groove. 2-Thick conduit, 3-Protective sleeve, 4-Liquid circuit connector, 5-Nozzle assembly, 51-Fixed nozzle, 511-Low-pressure irrigation hole, 512-Guide groove, 52-Reset spring, 53-Sliding nozzle, 531-High-pressure jet hole, 532-Guide section, 533-Main support section, 534-Low-pressure irrigation groove, 54-Spiral atomizing element. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0025] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] like Figures 1 to 4 As shown, this embodiment provides a flushing conduit with variable water jet state, including a thin conduit 1 with a liquid flow channel 11 inside, and a nozzle assembly 5 for switching the water jet ejection state according to the internal pressure of the liquid flow channel 11. The nozzle assembly 5 is fixed inside the thin conduit 1 and is disposed near the liquid outlet 111 of the thin conduit 1.

[0029] This embodiment can switch between different working states according to the different pressures inside the liquid channel 11. When the liquid channel 11 is in a low-pressure state, the liquid pressure flowing out of the outlet 111 of the thin catheter 1 is relatively low, allowing doctors to perform irrigation and flushing operations. When the liquid channel 11 is in a high-pressure state, the liquid inside the liquid channel 11 is sprayed out directly through the high-pressure jet hole 531, and the liquid pressure sprayed out of the outlet 111 of the thin catheter 1 is relatively high, allowing doctors to perform clinical operations such as staining spraying, fine flushing, or water injection bulging.

[0030] Specifically, in this embodiment, such as Figure 3 and Figure 4 As shown, the nozzle assembly 5 includes a sliding nozzle 53, a reset member, and a fixed nozzle 51, which are sequentially arranged in the thin conduit 1 along the liquid flow direction. The fixed nozzle 51 is fixed in the thin conduit 1, and the sliding nozzle 53 is slidably connected to the thin conduit 1 along its axial direction. The fixed nozzle 51 is provided with a low-pressure irrigation hole 511, and the sliding nozzle 53 is provided with a high-pressure jet hole 531. The cross-sectional area of ​​the low-pressure irrigation hole 511 is larger than the cross-sectional area of ​​the high-pressure jet hole 531, and the high-pressure jet hole 531 is provided through the sliding nozzle 53. The sliding nozzle 53 is also provided with a low-pressure irrigation channel 534; When the liquid flow channel 11 is under high pressure, the sliding nozzle 53 presses against the fixed nozzle 51, the high pressure jet hole 531 and the low pressure irrigation hole 511 are connected to each other, and the low pressure irrigation tank 534 and the low pressure irrigation hole 511 are disconnected from each other. When the liquid flow channel 11 is under low pressure, both the high-pressure jet hole 531 and the low-pressure irrigation channel 534 are connected to the low-pressure irrigation hole 511.

[0031] In this embodiment, a sliding nozzle 53, a reset member, and a fixed nozzle 51 are provided. The fixed nozzle 51 is fixed inside the thin conduit 1, and the sliding nozzle 53 is slidably connected to the thin conduit 1 along its axial direction. When the liquid flow channel 11 is under high pressure, the high-pressure liquid in the liquid flow channel 11 will push the sliding nozzle 53 to move forward against the thrust of the reset member until the sliding nozzle 53 presses against the fixed nozzle 51. At this time, only the high-pressure jet hole 531 and the low-pressure irrigation hole 511 are interconnected. At this time, the high-pressure liquid in the liquid flow channel 11 can only be ejected under high pressure through the high-pressure jet hole 531.

[0032] When the liquid flow channel 11 is in a low-pressure state, the low-pressure liquid in the liquid flow channel 11 cannot overcome the thrust of the reset member, causing the sliding nozzle 53 to move away from the fixed nozzle 51. At this time, the high-pressure jet hole 531 and the low-pressure irrigation tank 534 are connected to the low-pressure irrigation hole 511, so that the low-pressure liquid in the liquid flow channel 11 can flow into the low-pressure irrigation hole 511 through the high-pressure jet hole 531 and the low-pressure irrigation tank 534, and then flow out in a low-pressure state through the outlet 111 of the thin conduit 1.

[0033] Therefore, the nozzle assembly 5 in this embodiment can make the liquid in the liquid channel 11 flow out from different channels according to the pressure state inside the liquid channel 11, forming different working states, thereby forming a technical effect that can be applied to multiple scenarios, and solving the problem of the single function of conventional flushing conduits.

[0034] Specifically, in this embodiment, as Figure 3 As shown, the fixed nozzle 51 and the sliding nozzle 53 are respectively provided with matching guide grooves 512 and guide sections 532 on the side close to each other. The guide grooves 512 are connected to the low-pressure irrigation hole 511 and are coaxially arranged. When the liquid flow channel 11 is under high pressure, the high pressure jet hole 531 is partially inserted into the low pressure irrigation hole 511. The guide groove 512 and guide section 532 are provided to make the entire process of the sliding nozzle 53 pressing against and inserting into the fixed nozzle 51 more stable when the liquid flow channel 11 is under high pressure.

[0035] Specifically, in this embodiment, both the guide groove 512 and the guide segment 532 are truncated cone-shaped.

[0036] Specifically, in this embodiment, the sliding nozzle 53 includes a main support section 533, and low-pressure irrigation channels 534 are distributed on the outer peripheral wall of the main support section 533. In this embodiment, four low-pressure irrigation channels 534 are provided and are evenly distributed along the circumference of the sliding nozzle 53. Technicians can set other numbers as needed. In some embodiments, technicians can also set the low-pressure irrigation channels 534 into other shapes as needed, such as a hole structure. It is only necessary to ensure that when the sliding nozzle 53 presses against the fixed nozzle 51, the hole structure is disconnected from the low-pressure irrigation hole 511 of the fixed nozzle 51. Other shapes will not be described in detail here.

[0037] Specifically, in this embodiment, such as Figure 3 As shown, the nozzle assembly 5 also includes a spiral atomizing element 54 disposed in the high-pressure jet hole 531. By disposing of the spiral atomizing element 54, the liquid entering the high-pressure jet hole 531 can be atomized and sprayed out, which facilitates the doctor to perform atomized spraying and dyeing operations.

[0038] Specifically, in this embodiment, as Figure 3 As shown, the reset component is a reset spring 52, and technicians can configure the reset spring 52 as an elastic air cushion as needed.

[0039] In some optional embodiments, the high-pressure jet holes 531 are provided in multiple and evenly distributed on the sliding nozzle 53, so that when the liquid flow channel 11 is under high pressure, the high-pressure liquid can be sprayed out from the multiple evenly distributed high-pressure jet holes 531 to form a mist spraying effect.

[0040] Specifically, in this embodiment, as Figure 3 As shown, the thin conduit 1 has an installation annular groove 12 at one end near its outlet 111; The nozzle assembly 5 is disposed in the mounting ring groove 12. In this embodiment, the mounting ring groove 12 is post-processed, for example, by thermoplastic process. The thermoplastic process is an existing process and will not be described in detail here.

[0041] In this embodiment, as Figure 1 and Figure 2 As shown, it also includes interconnected thick conduit 2 and liquid line connector 4, as well as protective sleeve 3; The end of the thin conduit 1 away from the outlet 111 is inserted into the thick conduit 2. The protective sleeve 3 is fitted and fixed at the connection position between the thin conduit 1 and the thick conduit 2. The thick conduit 2, the liquid connector 4, and the protective sleeve 3 are all existing structures and will not be described in detail here.

[0042] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A flushing conduit with variable water jet state, comprising a thin conduit (1) having an internal liquid flow channel (11), characterized in that, It also includes a nozzle assembly (5) for switching the water jet ejection state according to the internal pressure of the liquid flow channel (11), the nozzle assembly (5) being fixed inside the thin conduit (1) and set near the liquid outlet (111) of the thin conduit (1); The nozzle assembly (5) includes a sliding nozzle (53), a reset member and a fixed nozzle (51) arranged sequentially in the thin conduit (1) along the liquid flow direction. The fixed nozzle (51) is fixed in the thin conduit (1), and the sliding nozzle (53) is slidably connected to the thin conduit (1) along the axial direction of the thin conduit (1). The fixed nozzle (51) is provided with a low-pressure irrigation hole (511), and the sliding nozzle (53) is provided with a high-pressure jet hole (531). The cross-sectional area of ​​the low-pressure irrigation hole (511) is larger than the cross-sectional area of ​​the high-pressure jet hole (531), and the high-pressure jet hole (531) is provided through the sliding nozzle (53). The sliding nozzle (53) is also provided with a low-pressure irrigation channel (534); When the liquid flow channel (11) is under high pressure, the sliding nozzle (53) presses against the fixed nozzle (51), the high pressure jet hole (531) and the low pressure irrigation hole (511) are connected to each other, and the low pressure irrigation tank (534) and the low pressure irrigation hole (511) are disconnected from each other. When the liquid flow channel (11) is under low pressure, both the high-pressure jet hole (531) and the low-pressure irrigation channel (534) are connected to the low-pressure irrigation hole (511).

2. The flushing conduit with variable water jet state according to claim 1, characterized in that, The fixed nozzle (51) and the sliding nozzle (53) are respectively provided with matching guide grooves (512) and guide sections (532) on the side close to each other. The guide grooves (512) are connected to the low-pressure irrigation hole (511) and are coaxially arranged. When the liquid flow channel (11) is under high pressure, the high pressure jet hole (531) is partially inserted into the low pressure irrigation hole (511).

3. The flushing conduit with variable water jet state according to claim 2, characterized in that, The guide groove (512) and guide section (532) are both truncated cone in shape.

4. The flushing conduit with variable water jet state according to claim 1, characterized in that, The sliding nozzle (53) includes a main support section (533) and a low-pressure irrigation channel (534) is distributed on the outer peripheral wall of the main support section (533).

5. A flushing conduit with variable water jet state according to claim 1, characterized in that, The nozzle assembly (5) also includes a spiral atomizing element (54) disposed within the high-pressure jet orifice (531).

6. A flushing conduit with variable water jet state according to claim 1, characterized in that, The reset component is a reset spring (52).

7. A flushing conduit with variable water jet state according to claim 1, characterized in that, The high-pressure jet holes (531) are provided in multiple and are evenly distributed on the sliding nozzle (53).

8. A flushing conduit with variable water jet state according to claim 1, characterized in that, The thin conduit (1) has an installation annular groove (12) at one end near its outlet (111); The nozzle assembly (5) is located in the mounting annular groove (12).

9. A flushing conduit with variable water jet state according to claim 1, characterized in that, It also includes interconnected thick conduits (2) and fluid connection connectors (4), as well as protective sleeves (3); The end of the thin tube (1) away from the outlet (111) is inserted into the thick tube (2), and the protective sleeve (3) is fitted and fixed at the connection position of the thin tube (1) and the thick tube (2).

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