An infiltration-assisted hydrophilic coating drainage catheter

Abstract

The application discloses a kind of infiltration auxiliary hydrophilic coating drainage catheter related to drainage catheter technical field.It includes the adhering plate, the adhering plate is provided with through-hole, the adhering plate is provided with the infiltration shell in its through-hole, the infiltration shell is provided with infiltration hole, the infiltration hole of the infiltration shell is slidably connected with catheter, the infiltration shell is provided with the liquid guide hole being communicated with the guide groove, the adhering plate is slidably connected with the connecting pipe being communicated with the liquid guide hole of the infiltration shell, the connecting pipe is communicated with the liquid storage sac at the end away from the infiltration shell.The hydrophilic liquid in the liquid storage sac is made into the guide groove by extruding the liquid storage sac, the hydrophilic liquid is filled in the lower side of the guide groove, and the hydrophilic liquid is immediately contacted with the surface of the catheter and infiltrated, so that the risk of infection of the patient's incision is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drainage catheter, and particularly relates to a infiltration-assisted hydrophilic coating drainage catheter. BACKGROUND

[0002] As a common medical device, the drainage catheter is widely used in postoperative drainage, effusion removal and other clinical scenes. In order to improve the smoothness and patient comfort when being inserted into the body cavity, the existing drainage catheter is usually coated with a hydrophilic coating to achieve lubrication function. Before use, the catheter as a whole needs to be immersed in a hydrophilic liquid (such as normal saline or special lubricating liquid) for a period of time to form a hydrophilic layer on the surface, so as to reduce the frictional resistance in the insertion process.

[0003] The catheter as a whole needs to be inserted within a short time after being immersed. If the catheter needs to be slowly pushed due to complex anatomical structure or high operation precision requirement, the hydrophilic liquid on the surface of the uninserted part of the catheter exposed to the external environment will gradually evaporate, resulting in thinning of the hydrophilic layer or even local dryness, which reduces the lubrication effect, and further increases the risk of tissue damage and operation difficulty. In addition, the prolonged stay of the exposed catheter in the air will also introduce pollution risk. The surface of the hydrophilic layer is easy to adsorb pollutants such as bacteria and dust in the environment, and the catheter needs to be in direct contact with the tissue through the incision during the insertion process, thereby bringing the pollutants into the body cavity and causing infection or inflammatory reaction. Although there are some catheter designs with pre-hydration function in the prior art, they still cannot realize on-demand local infiltration or real-time maintenance of the stability of the hydrophilic layer, and lack effective response mechanism for the dynamic degradation of the hydrophilic layer during the insertion process. SUMMARY

[0004] The present application provides a hydrophilic coating drainage catheter with infiltration assistance, which is convenient to adjust, in order to solve the problem that the existing drainage catheter cannot realize on-demand local infiltration or real-time maintenance of the stability of the hydrophilic layer.

[0005] The technical scheme is: a hydrophilic coating drainage catheter with infiltration assistance, comprising a fitting plate, the fitting plate is provided with symmetrical distribution of binding belts, the fitting plate is provided with a longitudinal through hole, the fitting plate is provided with an infiltration shell located in the through hole, the infiltration shell is provided with an infiltration hole, the infiltration hole of the infiltration shell is slidably connected with a catheter, the infiltration shell is provided with a flow guide groove in communication with the infiltration hole, the infiltration shell is provided with a liquid guide hole in communication with the flow guide groove, the fitting plate is slidably connected with a connecting pipe in communication with the liquid guide hole of the infiltration shell, one end of the connecting pipe away from the infiltration shell is communicated with a liquid storage bag, the liquid storage bag stores a hydrophilic liquid, the hydrophilic liquid in the liquid storage bag enters the flow guide groove through the connecting pipe, and the hydrophilic liquid discharged from the flow guide groove infiltrates the surface of the catheter.

[0006] Further, the diameter of the infiltration shell guide hole is less than the inner diameter of the connecting pipe.

[0007] Further, the infiltration shell is fixed with a sliding sleeve arranged outside the guide pipe, a shoulder part is arranged on the side of the sliding sleeve close to the infiltration shell, a spline is arranged on the non-shoulder part of the sliding sleeve, a pressing ring is fixed between the shoulder part of the sliding sleeve and the spline, the shoulder part of the sliding sleeve and the spline are used for clamping the pressing ring, and a sleeve is threadedly connected to the sliding sleeve for pressing the spline.

[0008] Further, the inner diameter of the pressing ring is greater than the outer diameter of the non-shoulder part of the sliding sleeve, and the outer diameters of the infiltration shell, the shoulder part of the sliding sleeve and the spline are all less than the diameter of the through hole of the fitting plate.

[0009] Further, the pressing ring is made of rubber.

[0010] Further, the shoulder part of the sliding sleeve close to the pressing ring and the side of the spline close to the pressing ring are both provided with protrusions distributed uniformly in the circumferential direction, the protrusions of the sliding sleeve and the protrusions of the spline are staggered and used for clamping the pressing ring.

[0011] Further, the side of the sliding sleeve away from the infiltration shell is fixed with extrusion blocks distributed uniformly in the circumferential direction, the extrusion blocks are made of elastic material, the side of the sleeve away from the sliding sleeve is provided with an inclined annular surface, the inner diameter of the inclined annular surface of the sleeve gradually increases from the side away from the infiltration shell to the other side, the sleeve is used for pressing the extrusion blocks distributed uniformly in the circumferential direction, and the extrusion blocks distributed uniformly in the circumferential direction are used for clamping the guide pipe.

[0012] Further, the fitting plate is provided with a rectangular groove transversely penetrating and communicating with the through hole, the shoulder part of the sliding sleeve is fixed with guide plates symmetrically distributed and located in the rectangular groove of the fitting plate, the fitting plate is limitingly and slidingly connected with guide shells symmetrically distributed and slidingly connected with adjacent guide plates, and the side of the guide shell away from the adjacent guide plate is provided in a wave shape.

[0013] Further, the guide pipe is slidingly connected with a first sliding ring located on the side of the sleeve away from the infiltration shell, circumferentially uniform arc-shaped rods are fixed between the first sliding ring and the sleeve, the arc-shaped rods are made of elastic material, the guide pipe is slidingly connected with a second sliding ring located on the side of the first sliding ring away from the sleeve, a pressing sleeve for fixing the guide pipe is fixed between the second sliding ring and the first sliding ring, the pressing sleeve is made of deformable material, and the second sliding ring and the first sliding ring are used for pressing the pressing sleeve when they are close to each other.

[0014] Further, the first sliding ring is fixed with symmetrically distributed clamping blocks, the clamping blocks are made of deformable material, and the second sliding ring is provided with through grooves for the adjacent clamping blocks to pass through, and the symmetrically distributed clamping blocks are collectively used for fixing the second sliding ring.

[0015] Beneficial effects are: the present application makes the hydrophilic liquid in the liquid storage bag enter the guide groove through the connecting pipe and the liquid guide hole of the infiltration shell, the hydrophilic liquid fills the lower side of the guide groove first, and then the discharged hydrophilic liquid immediately contacts and infiltrates the surface of the catheter, which cannot be exposed for too long in the external environment, thereby ensuring the smooth insertion of the catheter into the patient's body and reducing the risk of infection at the patient's incision, and the discharge speed of the hydrophilic liquid discharged from the guide groove tends to be stable, thereby uniformly infiltrating the surface of the catheter, the sliding sleeve and the extrusion ring are brought close to each other by rotating the sleeve, and the pressure ring is fixed, the catheter is perpendicular to the incision of the patient, and in the subsequent process of rotating the sleeve, the catheter is fixed by extruding the extrusion block, multiple fixation is realized, thereby facilitating the operator to fix the catheter, the pressure sleeve fixes the catheter by extruding the first sliding ring and the second sliding ring, and after the unplanned extubation event occurs, the traction force is buffered by the deformation of the arc-shaped rod, thereby ensuring that the part of the catheter inserted into the patient's body is in a stationary state, so that the catheter smoothly performs the liquid guiding process. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the present application;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the present application;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the present application; Figure 3 It is a schematic diagram of the three-dimensional structure of the present application;

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the present application;

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the present application; Figure 5 It is a schematic diagram of the three-dimensional structure of the present application;

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the present application;

[0023] Part names and serial numbers in the figure: 1 - fitting plate, 111 - catheter, 2 - bandage, 3 - infiltration shell, 301 - flow guide groove, 4 - connecting pipe, 5 - liquid storage bag, 6 - sliding sleeve, 7 - extrusion ring, 8 - pressure receiving ring, 9 - sleeve, 10 - extrusion block, 11 - guide plate, 12 - guide shell, 13 - first sliding ring, 14 - arc-shaped rod, 15 - second sliding ring, 16 - pressure receiving sleeve, 17 - detent block. DETAILED DESCRIPTION

[0024] The technical solutions of the present application will be further described below in conjunction with the drawings. The following examples are only referenced in the orientation of the drawings for the convenience of those skilled in the art to understand, and are not limited to the installation orientation of the drainage catheter.

[0025] Example 1

[0026] The existing drainage catheter needs to be infiltrated with hydrophilic liquid before being inserted into the patient's body, so that a hydrophilic layer is formed on the surface of the drainage catheter. The infiltration process generally involves placing the entire drainage catheter into the hydrophilic liquid, so that the entire surface of the drainage catheter is infiltrated. The infiltrated drainage catheter needs to be slowly inserted into the patient's body to ensure the orientation accuracy of the drainage catheter. However, during the slow insertion process, the drainage catheter that has not been inserted into the patient's body stays in the external environment for a longer time, which causes the hydrophilic liquid on the surface of the drainage catheter to evaporate, the thickness of the hydrophilic layer to become thinner, and the insertion process of the drainage catheter to be affected. In addition, the external bacteria and dust will adhere to the hydrophilic layer during the stay in the external environment, and the hydrophilic layer will directly contact the patient's incision during the insertion of the drainage catheter into the patient's body, thereby causing wound infection.

[0027] A kind of infiltration auxiliary hydrophilic coating drainage catheter, please refer to Figures 1-4Read this paragraph, including the fitting plate 1, the fitting plate 1 is installed with two symmetrical distribution of the bandage 2, through two bandage 2 will be fixed on the patient with the fitting plate 1, fitting plate 1 is provided with longitudinal through hole, fitting plate 1 is provided with the infiltration shell 3 located in the lower side of its upper through hole, the infiltration shell 3 is provided with infiltration hole, the infiltration hole of the infiltration shell 3 is connected with the catheter 111, the infiltration shell 3 is provided with the flow guide groove 301 communicated with its infiltration hole, the width of the flow guide groove 301 close to the inner ring surface of the infiltration shell 3 side is less than the width of the side away from the inner ring surface of the infiltration shell 3, the rear side of the infiltration shell 3 is provided with the liquid guide hole communicated with the flow guide groove 301, the rear side of the fitting plate 1 is connected with the connecting pipe 4 communicated with the liquid guide hole of the infiltration shell 3, the diameter of the liquid guide hole of the infiltration shell 3 is less than the inner diameter of the connecting pipe 4, the speed of the hydrophilic liquid into the flow guide groove 301 is controlled, so as to control the speed of the hydrophilic liquid in the flow guide groove 301, ensure that the catheter 111 is evenly infiltrated, the rear end of the connecting pipe 4 is communicated with the liquid storage bag 5, the liquid storage bag 5 stores the hydrophilic liquid, the operator squeezes the liquid storage bag 5, the hydrophilic liquid in the liquid storage bag 5 enters the flow guide groove 301 through the connecting pipe 4, the hydrophilic liquid discharged from the flow guide groove 301 immediately infiltrates the surface of the catheter 111, and will not be exposed in the external environment for too long, so as to ensure that the catheter 111 is smoothly inserted into the patient's body, and the risk of infection of the patient's incision is reduced.

[0028] Please refer to Figure 2 、 Figure 3 、 Figure 5 and Figure 7Read this paragraph, the infiltration shell 3 is fixed with a sliding sleeve 6 sleeved outside the catheter 111, the sliding sleeve 6 is provided with a shoulder portion near one side of the infiltration shell 3, the non shoulder portion of the sliding sleeve 6 is connected with the extrusion ring 7 through spline, the abutting plate 1 is fixed with the pressure ring 8 between the shoulder portion of the sliding sleeve 6 and the extrusion ring 7, the shoulder portion of the sliding sleeve 6 and the extrusion ring 7 are used for clamping the pressure ring 8 together, the extrusion ring 7 only moves vertically downward and does not rotate, which ensures that the extrusion ring 7 stably extrudes the pressure ring 8, the inner diameter of the pressure ring 8 is greater than the outer diameter of the non shoulder portion of the sliding sleeve 6, the outer diameter of the infiltration shell 3, the outer diameter of the shoulder portion of the sliding sleeve 6 and the outer diameter of the extrusion ring 7 are all smaller than the diameter of the through hole of the abutting plate 1, the above setting facilitates the adjustment of the position of the catheter 111, ensures that the catheter 111 is perpendicular to the surface of the skin of the patient, the sliding sleeve 6 is threadedly connected with the sleeve 9 for extruding the extrusion ring 7, the pressure ring 8 is made of rubber material, the side of the shoulder portion of the sliding sleeve 6 close to the pressure ring 8 and the side of the extrusion ring 7 close to the pressure ring 8 are both provided with protrusions distributed uniformly in the circumferential direction, the protrusions of the sliding sleeve 6 and the protrusions of the extrusion ring 7 are staggered and used for clamping the pressure ring 8 together, the pressure ring 8 is deformed under the extrusion of the shoulder portion of the sliding sleeve 6 and the extrusion ring 7, so that the sliding sleeve 6 and the extrusion ring 7 are more stable, the upper side of the sliding sleeve 6 is fixed with extrusion blocks 10 distributed uniformly in the circumferential direction, the extrusion blocks 10 are made of elastic material, the upper side in the sleeve 9 is provided with an inclined annular surface, the inner diameter of the inclined annular surface of the sleeve 9 gradually increases from top to bottom, the sleeve 9 is used for extruding the extrusion blocks 10 distributed uniformly in the circumferential direction, the extrusion blocks 10 distributed uniformly in the circumferential direction are used for clamping the catheter 111 together, after the sliding sleeve 6 shoulder portion and the extrusion ring 7 fix the pressure ring 8, the sleeve 9 has not extruded the extrusion blocks 10.

[0029] Please refer to Figure 1 and Figure 5 Read this paragraph, the abutting plate 1 is provided with a rectangular slot transversely penetrating left and right and communicating with the through hole thereon, the shoulder portion of the sliding sleeve 6 is fixed with guide plates 11 distributed symmetrically left and right and located in the rectangular slot of the abutting plate 1, the abutting plate 1 is limitingly and slidingly connected with guide shells 12 distributed symmetrically and slidingly connected with adjacent guide plates 11 left and right, the side of the guide shell 12 away from the adjacent guide plate 11 is provided in a wave shape, for increasing the friction between the hands of the operator and the guide shell 12, through the guide shell 12 and the guide plate 11, the operator can fix the sliding sleeve 6, ensuring that the sliding sleeve 6 is in a stationary state during the rotation of the sleeve 9.

[0030] When it is necessary to drain fluid from a patient's body, the operator first inserts the catheter 111 from top to bottom through the circumferentially distributed compression block 10, sliding sleeve 6, and infiltration shell 3, and then fixes the strap 2 at the puncture site. At this time, the catheter 111 needs to be perpendicular to the patient's skin surface to avoid deviation of the catheter 111 from the incision insertion point. The catheter 111 compressing the incision could enlarge it, so the position of the catheter 111 needs to be adjusted. The specific operation is as follows: In the initial state, the shoulder of the sliding sleeve 6 and the compression block 10... Ring 7 does not clamp the pressure ring 8. At this time, the operator moves the sleeve 9 horizontally. The sleeve 9 drives the sliding sleeve 6, the compression ring 7 and the guide tube 111 to move horizontally. The inner diameter of the pressure ring 8 is larger than the outer diameter of the upper side of the sliding sleeve 6. The pressure ring 8 does not affect the movement of the sliding sleeve 6. When the sleeve 9 drives the sliding sleeve 6 to move left and right, the sliding sleeve 6 drives the two guide plates 11 to slide along the adjacent guide shells 12. When the sleeve 9 drives the sliding sleeve 6 to move back and forth, the sliding sleeve 6 drives the two guide shells 12 to move back and forth through the two guide plates 11.

[0031] After the operator adjusts the position of the guide tube 111, it needs to be fixed. The specific operation is as follows: The operator's two fingers of the left hand contact and clamp the corrugated surfaces of the two guide shells 12 respectively. The right hand rotates the sleeve 9, which moves downward under the guidance of its thread. The sleeve 9 squeezes the compression ring 7 downward. Since the compression ring 7 is splinedly connected to the sliding sleeve 6, the compression ring 7 will only move vertically downward and will not rotate, ensuring that the compression ring 7 stably squeezes the pressure ring 8 downward. After the compression ring 8 contacts the pressure ring 8, the compression ring 7 continues to move downward. The pressure ring 8 is located at the shoulder of the sliding sleeve 6 and the compression ring. The sleeve 6 deforms under the pressure of the compression ring 7, and the protrusions on the shoulder of the sliding sleeve 6 and the compression ring 7 are evenly distributed around the circumference and interlock, making the sliding sleeve 6 and the compression ring 7 more stable. The guide shell 12 and the guide plate 11 make it easy for the operator to fix the sliding sleeve 6, ensuring that the sliding sleeve 6 is stationary during the rotation of the sleeve 9. When the shoulder of the sliding sleeve 6 and the compression ring 7 clamp the pressure ring 8, the sliding sleeve 6 and the compression ring 7 will not move relative to the pressure ring 8. At the same time, the guide tube 111 will not move horizontally relative to the pressure ring 8. The position adjustment of the guide tube 111 is completed, and the operator no longer rotates the sleeve 9.

[0032] When the position adjustment of the catheter 111 is completed, the inclined annular surface on the upper side of the sleeve 9 is in contact with the extrusion block 10, at this time, the extrusion block 10 has not yet exerted extrusion force on the catheter 111, and the catheter 111 can move longitudinally freely, then the operator slowly inserts the catheter 111 into the patient's body, at this time, the catheter 111 is perpendicular to the incision of the patient, which ensures that the catheter 111 is smoothly inserted into the patient's body, in the process of inserting the catheter 111 into the patient's body, the surface of the catheter 111 passes through the infiltration holes of the infiltration shell 3 from bottom to top in turn, in this process, the operator uses the right hand to extrude the liquid storage bag 5, the hydrophilic liquid in the liquid storage bag 5 enters the flow guide groove 301 through the connecting pipe 4 and the liquid guide hole of the infiltration shell 3, the hydrophilic liquid fills the lower side of the flow guide groove 301 first, then the hydrophilic liquid immediately contacts and infiltrates the surface of the catheter 111, which will not expose the catheter 111 to the external environment for too long, thereby ensuring that the catheter 111 is smoothly inserted into the patient's body and reducing the risk of infection at the incision of the patient, when the hydrophilic liquid flows through the liquid guide hole of the infiltration shell 3, the flow rate of the hydrophilic liquid per unit time is small due to the small diameter of the liquid guide hole of the infiltration shell 3, even if the operator excessively extrudes the liquid storage bag 5, the discharge speed of the hydrophilic liquid discharged from the flow guide groove 301 tends to be stable, thereby uniformly infiltrating the surface of the catheter 111, when the catheter 111 insertion process is completed, the operator no longer extrudes the liquid storage bag 5 with the right hand and continues to rotate the sleeve 9, the sleeve 9 rotates to extrude the extrusion blocks 10 distributed uniformly in the circumferential direction, the upper sides of the extrusion blocks 10 distributed uniformly in the circumferential direction approach each other to extrude the catheter 111, when the catheter 111 is fixed, the operator no longer rotates the sleeve 9, the installation of the drainage catheter is completed, then the drainage catheter conducts liquid drainage for the patient, by rotating the sleeve 9 to make the sliding sleeve 6 and the extrusion ring 7 approach each other and fix the compression ring 8, the catheter 111 is perpendicular to the incision of the patient, and in the subsequent process of rotating the sleeve 9, the catheter 111 is fixed by extruding the extrusion blocks 10, which realizes multiple fixation, thereby facilitating the operator to fix the catheter 111.

[0033] When it is necessary to remove the drainage catheter from the patient, the operator fixes the two guide shells 12 with the left hand and reversely rotates the sleeve 9 with the right hand, the extrusion blocks 10 no longer extrude the catheter 111, the fixation of the catheter 111 is released, then the operator pulls out the catheter 111 from the patient's body, as the sleeve 9 continues to be reversely rotated, the sleeve 9 moves upward under the guidance of the threads on the sleeve 9, the sleeve 9 no longer extrudes the extrusion ring 7, when the sleeve 9 returns to the initial position, the operator no longer rotates the sleeve 9, then the operator releases the fixation of the bandage 2 and takes down the drainage catheter.

[0034] Example 2

[0035] On the basis of example 1, a kind of infiltration auxiliary hydrophilic coating drainage catheter, please refer to Figure 1 、 Figure 2 、 Figure 5 And Figure 6In the initial state, the upper sides of the two clamping blocks 17 are clamped into the adjacent through grooves of the second sliding ring 15, and the two clamping blocks 17 are in a deformed state. When the catheter 111 is fixed by the pressing block 10, the operator moves the first sliding ring 13 upwards, and the three arc-shaped rods 14 are deformed. The first sliding ring 13 drives the pressing sleeve 16, the second sliding ring 15 and the two clamping blocks 17 to move upwards. When the three arc-shaped rods 14 tend to be straight, the operator keeps the state and moves the second sliding ring 15 downwards. The second sliding ring 15 extrudes the pressing sleeve 16 to make the pressing sleeve 16 tightly contact with the catheter 111. When the two clamping blocks 17 are removed from the adjacent through grooves of the second sliding ring 15, the elasticity of the two clamping blocks 17 is released. The upper sides of the two clamping blocks 17 are away from each other and limit the second sliding ring 15. At this time, the pressing sleeve 16 has fixed the catheter 111. Then the operator releases the first sliding ring 13. The elasticity of the three arc-shaped rods 14 drives the first sliding ring 13 to move downwards. The first sliding ring 13 drives the catheter 111 to move downwards through the pressing sleeve 16. The part of the catheter 111 between the sleeve 9 and the first sliding ring 13 is bent.

[0036] In the initial state, the upper sides of the two clamping blocks 17 are clamped into the adjacent through grooves of the second sliding ring 15, and the two clamping blocks 17 are in a deformed state. When the catheter 111 is fixed by the pressing block 10, the operator moves the first sliding ring 13 upwards, and the three arc-shaped rods 14 are deformed. The first sliding ring 13 drives the pressing sleeve 16, the second sliding ring 15 and the two clamping blocks 17 to move upwards. When the three arc-shaped rods 14 tend to be straight, the operator keeps the state and moves the second sliding ring 15 downwards. The second sliding ring 15 extrudes the pressing sleeve 16 to make the pressing sleeve 16 tightly contact with the catheter 111. When the two clamping blocks 17 are removed from the adjacent through grooves of the second sliding ring 15, the elasticity of the two clamping blocks 17 is released. The upper sides of the two clamping blocks 17 are away from each other and limit the second sliding ring 15. At this time, the pressing sleeve 16 has fixed the catheter 111. Then the operator releases the first sliding ring 13. The elasticity of the three arc-shaped rods 14 drives the first sliding ring 13 to move downwards. The first sliding ring 13 drives the catheter 111 to move downwards through the pressing sleeve 16. The part of the catheter 111 between the sleeve 9 and the first sliding ring 13 is bent.

[0037] When the patient is in bed, the drainage bag of the catheter 111 is generally fixed on one side of the bed, and when the patient turns over, gets out of bed and the like, the catheter 111 is easily pulled to cause unplanned extubation. When the catheter 111 is pulled, the part of the catheter 111 between the sleeve 9 and the first sliding ring 13 is straightened, the catheter 111 first drives the pressure sleeve 16 to move upward, the pressure sleeve 16 drives the first sliding ring 13 to move upward, the three arc-shaped rods 14 are deformed to buffer the pulling force, so that the part of the catheter 111 inserted into the patient is in a static state, so that the catheter 111 smoothly performs the liquid guiding process, and after the pulling force disappears, the elastic force of the three arc-shaped rods 14 is released to drive the upper side of the catheter 111 to continue to move downward through the first sliding ring 13 and the pressure sleeve 16.

[0038] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A wettable assisted hydrophilic coating drainage conduit, comprising an adhesive plate (1), wherein the adhesive plate (1) is fitted with symmetrically distributed straps (2), and the adhesive plate (1) is provided with a longitudinally penetrating through hole, characterized in that, The bonding plate (1) is provided with an impregnation shell (3) located in a through hole. The impregnation shell (3) is provided with an impregnation hole. A conduit (111) is slidably connected to the impregnation hole of the impregnation shell (3). A guide groove (301) communicating with the impregnation hole is provided inside the impregnation shell (3). The impregnation shell (3) is provided with a liquid guide hole communicating with the guide groove (301). The bonding plate (1) is slidably connected with a connecting pipe (4) communicating with the liquid guide hole of the impregnation shell (3). 4) A liquid storage bladder (5) is connected to one end away from the wetting shell (3). The liquid storage bladder (5) stores a hydrophilic liquid. The hydrophilic liquid in the liquid storage bladder (5) enters the guide channel (301) through the connecting pipe (4). The hydrophilic liquid discharged from the guide channel (301) wets the surface of the conduit (111). A sliding sleeve (6) is fixedly connected to the wetting shell (3) and sleeved on the outside of the conduit (111). A platform is provided on the side of the sliding sleeve (6) near the wetting shell (3). At the shoulder, a compression ring (7) is splinedly connected to the non-shoulder portion of the sliding sleeve (6). A pressure ring (8) is fixedly connected to the fitting plate (1) between the shoulder of the sliding sleeve (6) and the compression ring (7). The shoulder of the sliding sleeve (6) and the compression ring (7) are used together to clamp the pressure ring (8). A sleeve (9) for compressing the compression ring (7) is threadedly connected to the sliding sleeve (6). The inner diameter of the pressure ring (8) is larger than that of the non-shoulder portion of the sliding sleeve (6). The outer diameter of the immersion shell (3), the outer diameter of the shoulder of the sliding sleeve (6) and the outer diameter of the extrusion ring (7) are all smaller than the diameter of the through hole of the bonding plate (1); the shoulder of the sliding sleeve (6) near the pressure ring (8) and the side of the extrusion ring (7) near the pressure ring (8) are both provided with circumferentially evenly distributed protrusions, and the protrusions of the sliding sleeve (6) and the protrusions of the extrusion ring (7) are staggered and used together to clamp the pressure ring (8).

2. The immersion-assisted hydrophilic coating drainage conduit according to claim 1, characterized in that, The diameter of the liquid guiding hole of the immersion shell (3) is smaller than the inner diameter of the connecting pipe (4).

3. The immersion-assisted hydrophilic coating drainage conduit according to claim 1, characterized in that, The pressure ring (8) is made of rubber.

4. The immersion-assisted hydrophilic coating drainage conduit according to claim 1, characterized in that, The sliding sleeve (6) is fixed with a circumferentially evenly distributed extrusion block (10) on the side away from the immersion shell (3). The extrusion block (10) is made of elastic material. The sleeve (9) is provided with an inclined annular surface on the side away from the sliding sleeve (6). The inner diameter of the inclined annular surface of the sleeve (9) gradually increases from the side away from the immersion shell (3) to the other side. The sleeve (9) is used to extrude the circumferentially evenly distributed extrusion block (10). The circumferentially evenly distributed extrusion block (10) is used together to clamp the conduit (111).

5. The immersion-assisted hydrophilic coating drainage conduit according to claim 1, characterized in that, The bonding plate (1) is provided with a rectangular groove that runs horizontally through it and communicates with the through hole on it. The shoulder of the sliding sleeve (6) is fixed with guide plates (11) that are symmetrically distributed and located in the rectangular groove of the bonding plate (1). The bonding plate (1) is slidably connected with guide shells (12) that are symmetrically distributed and slidably connected with the adjacent guide plates (11). The side of the guide shell (12) away from the adjacent guide plates (11) is set as wavy.

6. The immersion-assisted hydrophilic coating drainage conduit according to claim 1, characterized in that, The conduit (111) is slidably connected to a first sliding ring (13) located on the side of the sleeve (9) away from the immersion shell (3). A circumferentially evenly distributed arc-shaped rod (14) is fixed between the first sliding ring (13) and the sleeve (9). The arc-shaped rod (14) is made of elastic material. The conduit (111) is slidably connected to a second sliding ring (15) located on the side of the first sliding ring (13) away from the sleeve (9). A pressure sleeve (16) for fixing the conduit (111) is fixed between the second sliding ring (15) and the first sliding ring (13). The pressure sleeve (16) is made of deformable material. The second sliding ring (15) and the first sliding ring (13) are close to each other and work together to squeeze the pressure sleeve (16).

7. The immersion-assisted hydrophilic coating drainage conduit according to claim 6, characterized in that, The first sliding ring (13) is fixed with symmetrically distributed locking blocks (17), the locking blocks (17) are made of deformable material, and the second sliding ring (15) is provided with a through groove for adjacent locking blocks (17) to pass through. The symmetrically distributed locking blocks (17) are used together to fix the second sliding ring (15).

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