Nasointestinal tube blockage flushing device and flushing method thereof

Abstract

The invention provides a nasointestinal tube blockage flushing device and a flushing method thereof, and belongs to the technical field of nasointestinal tubes, and the nasointestinal tube blockage flushing device comprises a hose, bristles at the end of the hose, a pressure control assembly connected to one end of the hose, and a driving assembly connected to the other end of the pressure control assembly. According to the pulse type flushing device, the servo motor, the lead screw, the sliding block, the connecting rod, the piston and the sleeve are arranged, the effect of pushing and pulling the piston in a reciprocating mode is achieved by controlling the rotating direction and the rotating speed of the servo motor, and therefore the rapid and alternate pulse type flushing effect is achieved, positive pressure and negative pressure are generated to form vortexes, and comprehensive and uniform flushing on the catheter wall is improved; residual medicine attached to the wall of the catheter can be powerfully flushed away, and the catheter can be dredged more effectively.

Description

Technical Field

[0001] This application relates to the field of nasoenteric tube technology, and in particular to a nasoenteric tube obstruction flushing device and flushing method thereof. Background Technology

[0002] Enteral nutrition is crucial for critically ill patients in the intensive care unit. Patients with gastric feeding intolerance, gastrointestinal motility disorders, electrolyte imbalances, and delayed gastric emptying may require high-level respiratory support and cannot be fed through the stomach. Therefore, nasoenteric tube feeding is the preferred method of nutritional support. In clinical practice, patients receiving enteral nutrition via nasoenteric tubes have a higher probability of tube blockage, and the tubes need to be flushed regularly to reduce the risk of blockage. The prior art, with publication number CN114099348B, describes a precise unblocking device for nasoenteric tube obstruction after gastrointestinal tumor surgery and its usage method. It can be connected to a syringe for routine flushing and can also be connected to a suction device and a negative pressure device through a three-way connector. This can improve the unblocking rate of nasoenteric tube obstruction, precisely unblock the nasoenteric tube, and reduce the incidence of unplanned tube removal. However, adjusting the flushing and suction working states through the three-way connector is not convenient, and it is not easy to control the frequency, so a good cleaning and unblocking effect cannot be achieved in actual operation. Application content

[0003] In view of this, the purpose of this application is to provide a nasoenteric tube obstruction flushing device and flushing method, which can powerfully clean the catheter by means of pulse flushing, and is convenient and labor-saving to operate.

[0004] To solve the above-mentioned technical problems, this application provides the following technical solution: A nasoenteric tube obstruction flushing device includes a flexible tube and bristles at its end, a pressure control component connected to one end of the flexible tube, and a drive component connected to the other end of the pressure control component. The pressure control assembly includes a sleeve and a piston inside it; The drive assembly includes: a housing, a slider, gears, and a connecting rod; The outer shell is connected to the sleeve, the slider is slidably disposed inside the outer shell, the gear is rotatably disposed on one side of the slider, the connecting rod is eccentrically mounted on one side of the gear, and the other end of the connecting rod is connected to the piston.

[0005] Preferably, the drive assembly further includes: a servo motor, a lead screw and a rack, with the servo motor provided at the end of the housing, the output end of the servo motor being fixedly connected to the lead screw, and the lead screw passing through the slider; The rack is fixedly connected to the inner side of the housing, the rack is arranged parallel to the lead screw, and the rack meshes with the gear; The slider is attached to the bottom surface of the rack.

[0006] Preferably, the width of the slider is the same as the inner cavity size of the outer shell, the top surface of the slider has a groove, and the gear is disposed in the groove on the top surface of the slider; The sidewall of the rack fits against the top groove sidewall of the slider.

[0007] Preferably, the length of the rack is the same as the length of the lead screw.

[0008] Preferably, a spring is installed in the internal cavity of the sleeve.

[0009] Preferably, a pressure gauge is provided on one side of the top of the sleeve, and a valve is provided in the middle of the top of the sleeve.

[0010] Preferably, the outer side of the hose is provided with an end cap that can slide along its axial direction, and a sealing gasket is attached to the side of the end cap facing away from the sleeve. The end of the sealing gasket is provided with an annular groove, and the groove is concentrically arranged with the sealing gasket.

[0011] Preferably, the end face of the hose is provided with bristles parallel to its axis, and the bristles are arranged in a ring array on the end face of the hose.

[0012] Preferably, the hose includes flushing holes symmetrically arranged on its outer side wall.

[0013] Another aspect of this application provides a flushing method for a nasoenteric tube obstruction flushing device: S1: After fully lubricating the outer surface of the tubing with liquid paraffin, insert it into the nasoenteric tube and clean the inner wall of the nasoenteric tube with the brush at the end of the tubing. S2: After the tubing is inserted into the nasoenteric tube to the blockage site, the servo motor drives the lead screw to rotate counterclockwise, causing the slider to move away from the sleeve. The piston moves away from the sleeve, and the cavity inside the sleeve is under negative pressure. The material in the blockage site of the nasoenteric tube is then extracted through the tubing. S3: Flushing fluid is injected into the valve through an external syringe. The servo motor drives the lead screw to rotate clockwise, which drives the slider to move closer to the sleeve. The meshing of the gear and rack generates rotation. The gear drives the connecting rod to swing back and forth. The piston moves back and forth linearly relative to the sleeve, forming a working state of alternating suction and suction. S4: The flushing fluid is delivered through the hose and sprayed out from the end opening of the hose. The flushing fluid washes the bristles, causing them to oscillate. The bristles rub against the impurities in the clogged area to achieve separation and produce a good cleaning effect.

[0014] Compared with the prior art, this application has at least the following advantages: In this application, by setting up a servo motor, lead screw, slider, connecting rod, piston and sleeve, and by controlling the rotation direction and speed of the servo motor, the effect of reciprocating push and pull piston is achieved, thereby obtaining a rapid alternating pulse flushing effect, generating positive and negative pressure to form vortices, increasing the comprehensive and uniform flushing of the catheter wall, effectively washing away residual drugs attached to the catheter wall, and more effectively unblocking the catheter.

[0015] In this application, by setting a hose and bristles, and setting bristles at the end of the hose, the edge of the hose end is prevented from scratching the inner wall of the conduit and causing damage to the conduit. At the same time, when the flushing liquid flows at the end of the hose, it drives the bristles to swing, and the bristles rub against the impurities in the blockage area to further enhance the cleaning effect.

[0016] In this application, by setting an end cap and a sealing gasket, the end cap is slid to the end of the conduit to cover it, and the sealing gasket is attached to the opening at the end of the conduit to achieve a sealing effect. This allows the pressure change inside the hose to act on the inside of the conduit, further enhancing the cleaning and unblocking effect. The annular groove set at the end of the sealing gasket can be engaged with the opening of the conduit, increasing the sealing path, enhancing the sealing effect, and preventing the flushing fluid from spraying out and causing unnecessary trouble. Attached Figure Description

[0017] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0018] Figure 1 This is a schematic diagram of the overall structure in this application; Figure 2 This is a schematic diagram of the slider structure in this application; Figure 3 This is a schematic diagram of the piston structure in this application; Figure 4 This is a schematic diagram of the sleeve structure in this application; Figure 5 This is a schematic diagram of the cross-sectional structure of the outer shell in this application; Figure 6 This is a schematic diagram of the cross-sectional structure of the sleeve in this application; [Figure Labels] 1. Hose; 2. Brush bristles; 3. End cap; 301. Sealing gasket; 4. Sleeve; 401. Valve; 402. Spring; 403. Pressure gauge; 5. Housing; 501. Rack; 6. Servo motor; 7. Lead screw; 8. Slider; 801. Gear; 802. Connecting rod; 9. Piston. Detailed Implementation

[0019] The following describes in detail, with reference to the accompanying drawings and specific embodiments, a precise unblocking device for nasoenteric tube obstruction after gastrointestinal tumor surgery and its usage method provided by the present invention. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0020] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0021] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0022] like Figure 1 , Figure 2 , Figure 3 The present application provides an embodiment of a nasoenteric tube obstruction flushing device and flushing method, which includes a flexible tube 1 and a brush 2 at its end, a pressure control component connected to one end of the flexible tube 1, and a drive component connected to the other end of the pressure control component. The pressure control assembly includes a sleeve 4 and a piston 9 inside it; The drive assembly includes: housing 5, slider 8, gear 801 and connecting rod 802; The outer shell 5 is connected to the sleeve 4. The slider 8 is slidably disposed inside the outer shell 5. The gear 801 is rotatably disposed on one side of the slider 8. The connecting rod 802 is eccentrically mounted on one side of the gear 801. The other end of the connecting rod 802 is connected to the piston 9. Before unblocking the conduit, the outer wall of the hose 1 is fully lubricated with liquid paraffin. Then, the hose 1 is inserted into the conduit until it reaches the blockage. The servo motor 6 drives the lead screw 7 to rotate counterclockwise. The slider 8 moves linearly relative to the lead screw 7 under the limiting action of the outer shell 5. By operating the slider 8 to slide inside the outer shell 5, the slider 8 moves away from the sleeve 4. The slider 8 drives the connecting rod 802 to move away from the sleeve 4. The piston 9 draws the inner cavity of the sleeve 4 to a negative pressure state. The inner cavity of the hose 1 is connected to the inner cavity of the sleeve 4. The pressure difference allows the hose 1 to draw the impurities from the blockage into the sleeve 4. Alternatively, by operating the slider 8 to move towards the sleeve 4 inside the outer casing 5, the piston 9 squeezes the cavity inside the sleeve 4, making the cavity inside the sleeve 4 under positive pressure. The piston 9 squeezes the flushing fluid stored in the sleeve 4 into the hose 1, and the flushing fluid flushes the blocked parts, cleans the impurities and clears the conduit. In the process of rapidly switching between positive pressure flushing and negative pressure suction, since gear 801 and connecting rod 802 are eccentrically mounted, when gear 801 slides in a straight line, connecting rod 802 will not immediately follow gear 801 to move in a straight line synchronously. Connecting rod 802 and piston 9 are hinged. When switching between positive pressure flushing and negative pressure suction, connecting rod 802 is in a swinging state, and the movement of piston 9 has a lag, which can play a buffering role, avoid damage to the conduit caused by excessive instantaneous pressure, and make it safer.

[0023] Brush bristles 2 are provided at the end of the hose 1 to prevent the edge of the hose 1 from scratching the inner wall of the conduit and causing damage to the conduit. At the same time, when the flushing liquid flows at the end of the hose 1, it drives the brush bristles 2 to swing, and the brush bristles 2 rub against the impurities in the blockage area to further enhance the cleaning effect.

[0024] By sliding the end cap 3 to the end of the conduit to shield it, the subsequent cleaning problems caused by the spraying of flushing fluid are reduced, making the device more convenient to use as a whole.

[0025] In this embodiment, as Figure 4 , Figure 5 and Figure 6 As shown: The drive assembly also includes: a servo motor 6, a lead screw 7 and a rack 501. The servo motor 6 is provided at the end of the housing 5. The output end of the servo motor 6 is fixedly connected to the lead screw 7. The lead screw 7 passes through the slider 8. The rack 501 is fixedly connected to the inner side of the housing 5. The rack 501 is arranged parallel to the lead screw 7 and meshes with the gear 801. Slider 8 is attached to the bottom surface of rack 501; The servo motor 6 drives the lead screw 7 to rotate counterclockwise. Under the limiting action of the outer shell 5, the slider 8 moves linearly relative to the lead screw 7, causing the slider 8 to move away from the sleeve 4. The slider 8 drives the connecting rod 802 to move away from the sleeve 4. The piston 9 draws the inner cavity of the sleeve 4 to a negative pressure state. The inner cavity of the hose 1 is connected to the inner cavity of the sleeve 4. Through the pressure difference, the hose 1 draws the impurities of the blockage into the sleeve 4. Alternatively, the servo motor 6 drives the lead screw 7 to rotate clockwise, and the slider 8 moves inside the outer shell 5 towards the side closer to the sleeve 4. The piston 9 squeezes the cavity inside the sleeve 4, making the cavity inside the sleeve 4 under positive pressure. The piston 9 squeezes the flushing fluid stored in the sleeve 4 into the hose 1, and uses the flushing fluid to flush the blocked parts, clean impurities and unclog the conduit. By controlling the rotation direction and speed of the servo motor 6, the rinsing and extraction working states can be quickly switched to achieve pulse rinsing, thus achieving the purpose of portability and labor saving. When gear 801 moves toward sleeve 4 with slider 8, gear 801 and slider 8 move synchronously in a straight line. Gear 801 presses connecting rod 802, causing piston 9 to press the inner cavity of sleeve 4, making the inner cavity of sleeve 4 positive pressure. Gear 801 is affected by the meshing action of rack 501 and rotates synchronously. When gear 801 rotates, it drives connecting rod 802 to swing back and forth, realizing the effect of pushing and pulling piston 9 back and forth, so that the pressure in the inner cavity of sleeve 4 changes continuously and rapidly. When the connecting rod 802 pushes the piston 9 into the sleeve 4, it is in the flushing state; when the connecting rod 802 pulls the piston 9 away from the sleeve 4, it is in the extraction state. This results in a rapid alternating pulse flushing effect. The positive and negative pressures inside the sleeve 4 form a vortex, which increases the overall and uniform flushing of the catheter wall. This effectively washes away residual drugs adhering to the catheter wall and reduces the occurrence of blockages. Furthermore, the flow direction of the flushing fluid at the end of the hose 1 is constantly changing. The flushing fluid can impact the bristles at the end of the hose 1, causing them to swing fully. Thus, the bristles 2 can effectively clean the inner wall of the conduit, achieving the effect of unblocking.

[0026] The width of slider 8 is the same as the inner cavity size of housing 5. A groove is provided on the top surface of slider 8, and gear 801 is disposed in the groove on the top surface of slider 8. The sidewall of rack 501 is attached to the sidewall of the top groove of slider 8; The slider 8 is guided and limited by the inner wall of the outer shell 5, making its linear motion more stable and smooth. The gear 801 is embedded in the groove on the top surface of the slider 8 to avoid interference between the gear 801 and the outer shell 5. Meanwhile, the slider 8 has a limiting function on the rack 501, which can prevent the rack 501 from shaking and ensure stable meshing between the gear 801 and the rack 501.

[0027] The length of rack 501 is the same as the length of lead screw 7; The rack 501 is parallel to the lead screw 7. When the slider 8 moves to near the end of the lead screw 7, it can still stably mesh with the rack 501 to ensure that the gear 801 limits the position of the piston 9 and ensures that the pressure inside the sleeve 4 is stable and controllable.

[0028] A spring 402 is installed in the internal cavity of sleeve 4; Spring 402 is used for cushioning to prevent piston 9 from rapidly impacting sleeve 4. The rebound force of spring 402 can help piston 9 move away from sleeve 4 to ensure the pressure when piston 9 draws flushing fluid from hose 1. A pressure gauge 403 is installed on one side of the top of the sleeve 4, and a valve 401 is installed in the middle of the top of the sleeve 4. The flushing fluid is added into the sleeve 4 through the valve 401 using a syringe. When the sleeve 4 is under negative pressure, the cleaning fluid can quickly fill the inner cavity of the sleeve 4. The blockage material extracted under negative pressure can also be quickly discharged through the valve 401. The flushing pressure of the flushing fluid can be easily controlled by the pressure gauge 403 to avoid excessive pressure causing the conduit to rupture, and also to make it easier for the user to control the flushing effect. The outer side of the hose 1 is provided with an end cap 3 that can slide along its axial direction. A sealing gasket 301 is attached to the side of the end cap 3 facing away from the sleeve 4. An annular groove is provided at the end of the sealing gasket 301, and the groove is concentric with the sealing gasket 301. The end cap 3 can slide to the end of the conduit and seal the end opening of the conduit with the sealing gasket 301 to achieve a sealing effect, so that the pressure change in the hose 1 can be applied to the inside of the conduit, further enhancing the cleaning and unblocking effect; The annular groove at the end of the sealing gasket 301 can engage with the opening of the conduit, increasing the sealing path, enhancing the sealing effect, and preventing the flushing fluid from spraying out and causing unnecessary trouble. The end face of the hose 1 is provided with bristles 2 parallel to its axis, and the bristles 2 are arranged in a ring on the end face of the hose 1. The bristles 2 are neatly arranged and fully cover the end face of the hose 1, which has a good barrier effect, prevents the edge of the hose 1 from scratching the inner wall of the conduit, and ensures the cleaning area, which can fully cover the inner wall of the conduit. The hose 1 includes flushing holes symmetrically arranged on its outer side wall; Flushing holes are provided at both the end and side wall of the hose 1, which can effectively ensure the flushing effect and prevent the flushing fluid from directly clogging the parts and aggravating the blockage.

[0029] Furthermore, a nasoenteric tube obstruction flushing device and its flushing method include the following steps: S1: After fully lubricating the outer surface of the tubing 1 with liquid paraffin, insert it into the nasoenteric tube and clean the inner wall of the nasoenteric tube with the brush 2 at the end of the tubing 1. S2: After the tubing 1 is inserted into the nasoenteric tube to the blockage site, the slider 8 is moved away from the sleeve 4, the piston 9 moves away from the sleeve 4, and the internal cavity of the sleeve 4 is under negative pressure. The material in the blockage site of the nasoenteric tube is extracted through the tubing 1. S3: The slider 8 moves closer to the sleeve 4, and the gear 801 rotates under the meshing action of the rack 501. The gear 801 drives the connecting rod 802 to swing back and forth, and the piston 9 moves back and forth linearly relative to the sleeve 4, forming a working state of alternating suction and suction. S4: The flushing fluid stored in the sleeve 4 is delivered through the hose 1 and sprayed out through the end opening of the hose 1. The flushing fluid washes the bristles 2, causing them to swing. The bristles 2 rub against the impurities in the blockage area to achieve separation and produce a good cleaning effect.

[0030] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0031] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A nasoenteric tube obstruction irrigation device, comprising a flexible tube (1) and bristles (2) at its end, characterized in that, A pressure control assembly connected to one end of the hose (1), and a drive assembly connected to the other end of the pressure control assembly; The pressure control assembly includes a sleeve (4) and a piston (9) inside it. The drive assembly includes: a housing (5), a slider (8), a gear (801), and a connecting rod (802); The outer shell (5) is connected to the sleeve (4), the slider (8) is slidably disposed inside the outer shell (5), the gear (801) is rotatably disposed on one side of the slider (8), the connecting rod (802) is eccentrically mounted on one side of the gear (801), and the other end of the connecting rod (802) is connected to the piston (9).

2. The nasoenteric tube obstruction flushing device according to claim 1, characterized in that: The drive assembly also includes: a servo motor (6), a lead screw (7) and a rack (501). The end of the housing (5) is provided with a servo motor (6), and the output end of the servo motor (6) is fixedly connected to the lead screw (7). The lead screw (7) passes through the slider (8). The rack (501) is fixedly connected to the inner side of the outer shell (5), the rack (501) is arranged parallel to the lead screw (7), and the rack (501) meshes with the gear (801); The slider (8) is attached to the bottom surface of the rack (501).

3. The nasoenteric tube obstruction flushing device according to claim 2, characterized in that: The width of the slider (8) is the same as the inner cavity size of the outer shell (5). The top surface of the slider (8) is provided with a groove, and the gear (801) is disposed in the groove on the top surface of the slider (8). The sidewall of the rack (501) is attached to the top groove sidewall of the slider (8).

4. The nasoenteric tube obstruction flushing device according to claim 3, characterized in that: The length of the rack (501) is the same as the length of the lead screw (7).

5. The nasoenteric tube obstruction flushing device according to claim 1, characterized in that: A spring (402) is installed in the internal cavity of the sleeve (4).

6. The nasoenteric tube obstruction flushing device according to claim 5, characterized in that: A pressure gauge (403) is provided on one side of the top of the sleeve (4), and a valve (401) is provided in the middle of the top of the sleeve (4).

7. The nasoenteric tube obstruction flushing device according to claim 1, characterized in that: The hose (1) has an end cap (3) that can slide along its axial direction on its outer side. A sealing gasket (301) is attached to the side of the end cap (3) facing away from the sleeve (4). An annular groove is provided at the end of the sealing gasket (301). The groove is concentric with the sealing gasket (301).

8. The nasoenteric tube obstruction flushing device according to claim 1, characterized in that: The end face of the hose (1) is provided with bristles (2) parallel to its axis, and the bristles (2) are arranged in a ring on the end face of the hose (1).

9. The nasoenteric tube obstruction flushing device according to claim 1, characterized in that: The hose (1) includes flushing holes symmetrically arranged on its outer side wall.

10. The flushing method of the nasoenteric tube obstruction flushing device according to any one of claims 1-9, characterized in that: S1: After lubricating the outer surface of the tubing (1) with liquid paraffin, insert it into the nasoenteric tube and clean the inner wall of the nasoenteric tube with the brush (2) at the end of the tubing (1); S2: After the flexible tube (1) is inserted into the nasoenteric tube to the blockage site, the slider (8) is operated to move away from the sleeve (4), the piston (9) moves away from the sleeve (4), and the cavity inside the sleeve (4) is under negative pressure. The material in the blockage site of the nasoenteric tube is extracted through the flexible tube (1). S3: The slider (8) moves closer to the sleeve (4), and the gear (801) and rack (501) rotate under the meshing action. The gear (801) drives the connecting rod (802) to swing back and forth, and the piston (9) moves back and forth in a straight line relative to the sleeve (4), forming a working state of alternating suction and suction. S4: The flushing liquid stored in the sleeve (4) is delivered through the hose (1) and sprayed out through the end opening of the hose (1). The flushing liquid washes the bristles (2) and makes them swing. The bristles (2) rub against the impurities in the blockage area to achieve separation and produce a good cleaning effect.

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