A kind of anti-leakage adjustable local pressurizing device for chest and abdominal puncture drainage tube

Abstract

The application discloses a kind of anti-bleeding adjustable partial pressurizing devices for chest and abdominal cavity puncture drainage tube, it is related to medical instrument field, including dressing assembly, it includes cover plate, annular guard plate fixedly connected to the bottom of cover plate and adhesive pad fixedly connected to the bottom of annular guard plate, the cover plate and annular guard plate form accommodating groove between, the accommodating groove is provided with absorbent cotton pad, the bottom of cover plate is opened with pipeline for accommodating drainage tube along transverse direction;Pressurizing assembly, it includes mounting hole opened in cover plate, the mounting hole is provided with pressurizing block, the bottom of pressurizing block is fixedly connected with shaftless spiral blade, the shaftless spiral blade is located above absorbent cotton pad;Positioning assembly is arranged between mounting hole and pressurizing block, for the pressurizing position of pressurizing block is positioned.The application is through dressing assembly and pressurizing assembly, solve the problem that drainage tube periphery bleeds seriously, drainage tube is easy to come out and bleed after extubation.

Description

Technical Field

[0001] This invention relates to medical device technology, specifically to an adjustable local pressure device for preventing leakage of thoracentesis and peritoneal puncture drainage tubes. Background Technology

[0002] Thoracotomy and paracentesis with catheter placement is a commonly used clinical diagnostic and treatment technique, widely applied to the treatment of pleural effusion, ascites, pneumothorax, and other conditions. In clinical practice, especially several days after drainage, the following challenging issues commonly arise:

[0003] Severe perivascular exudation: Due to tissue edema, channel formation, and the influence of abdominal or thoracic pressure, there is often a large amount of exudate in the gap between the drainage tube and the tissue. This not only soaks the dressings, patient's clothes, and bed sheets, causing discomfort and inconvenience to the patient, but also easily leads to perivascular infection and affects wound healing.

[0004] Drainage tubes are prone to dislodgement: Continuous soaking in exudate causes the adhesive tape or dressing to lose its stickiness. Combined with patient activity, this can easily lead to partial or complete dislodgement of the drainage tube. Even if sutures are used to fix it, although dislodgement can be prevented, the problem of exudation cannot be solved.

[0005] Persistent leakage after tube removal: After the drainage tube is removed, the drainage channels in the subcutaneous tissue (especially the path through the small hole at the tip of the catheter) often cannot close immediately. Fluid accumulation in the cavity (such as ascites and pleural effusion) will continue to seep out from the channel, affecting the primary healing of the wound after tube removal and increasing the risk of infection.

[0006] Currently, clinical practice routinely employs methods such as multi-layer sterile dressings, pressure application with adhesive tape, or abdominal bandages, but the effectiveness is limited. Uneven pressure, non-adjustable pressure, inability to properly fit the drainage tube, and poor patient comfort are common drawbacks of existing methods. Summary of the Invention

[0007] The purpose of this invention is to provide an adjustable local pressure device for preventing leakage of drainage tubes used in thoracentesis and peritoneal puncture, solving the problems of severe peritubular leakage, easy dislodgement of the drainage tube, and difficulty in stopping leakage after tube removal. To achieve the above objective, this invention provides the following technical solution: an adjustable local pressure device for preventing leakage of drainage tubes used in thoracentesis and peritoneal puncture, comprising:

[0008] A dressing assembly includes a cover plate, an annular protective plate fixedly connected to the bottom of the cover plate, and an adhesive pad fixedly connected to the bottom of the annular protective plate. A receiving groove is formed between the cover plate and the annular protective plate. An absorbent cotton pad is provided in the receiving groove. A pipe for receiving a drainage tube is opened laterally at the bottom of the cover plate.

[0009] A pressurizing assembly includes a mounting hole in a cover plate, a pressurizing block is disposed in the mounting hole, and a shaftless spiral blade is fixedly connected to the bottom of the pressurizing block, the shaftless spiral blade being located above the degreased cotton pad;

[0010] The positioning component is located between the mounting hole and the pressure block and is used to position the pressure block at the pressurization position.

[0011] Furthermore, the adhesive pad has a receiving opening, which is connected to a pipe.

[0012] Furthermore, a support pad is fixedly connected to the inner wall of the pipe. The support pad has a longitudinal central hole, and several transverse holes are formed on both sides of the longitudinal central hole. The several transverse holes are linearly distributed along the direction of extension of the longitudinal central hole.

[0013] Furthermore, the bottom of the longitudinal central hole penetrates the support pad, and the side walls on both sides are inclined to form a downward-facing oblique opening.

[0014] Furthermore, the edge portion of the degreased cotton pad extends to the outside of the receiving groove.

[0015] Furthermore, the inner diameter of the bottom of the shaftless helical blade is larger than the outer diameter of the drainage tube.

[0016] Furthermore, the positioning component includes:

[0017] Several first annular protrusions are fixedly connected to the inner wall of the mounting hole;

[0018] Several first annular notches are formed on the inner wall of the mounting hole;

[0019] Several second annular protrusions are fixedly connected to the side wall of the pressure block, and each of them corresponds to the first annular recess.

[0020] Several second annular notches are provided on the side wall of the pressure block and correspond to the first annular protrusion.

[0021] Furthermore, a plurality of first annular protrusions and a plurality of first annular recesses are alternately distributed in the axial direction of the mounting hole; a plurality of second annular protrusions and a plurality of second annular recesses are alternately distributed in the axial direction of the pressure block, and the cross-sections of the first annular protrusions and the second annular protrusions are both arc-shaped protrusions.

[0022] Compared with existing technologies, this invention provides an adjustable local pressure device for preventing leakage of drainage tubes used in thoracentesis and peritoneal punctures. By passing the drainage tube through the receiving opening of the adhesion pad and placing it inside the tube, the absorbent cotton pad adheres to the wound. Pressing down the pressure block drives the shaftless spiral blades to press into the absorbent cotton pad, uniformly applying radial pressure to directly compress the tissue around the puncture point, effectively inhibiting peritubal fluid leakage, while simultaneously improving the stability of the drainage tube and reducing the risk of dislodgement. The oblique opening and transverse holes on the support pad work together to guide the transverse diffusion of exudate that may crawl along the tube wall and absorb it with the absorbent cotton pad, further maintaining local dryness.

[0023] By continuously promoting healing after tube removal, when the drainage tube needs to be removed, only the adhesion pad needs to be partially separated and the drainage tube removed; after the dressing assembly is replaced, the device can still apply moderate pressure to the puncture channel after tube removal through the original pressure mechanism, and with the overflowing absorbent cotton pad filling the channel space, it can effectively reduce exudation after tube removal, promote granulation tissue growth and wound closure, and achieve full management from tube placement to tube removal.

[0024] By pressing down on the pressure block, the alternating second annular protrusions and first annular recesses on its sidewalls gradually engage with each other, achieving clear level adjustment. The arc-shaped cross-section design ensures smooth adjustment and stable locking, guaranteeing that the pressure block can accurately stop at different heights, thereby maintaining the preset pressure level on the wound and preventing unexpected pressure changes due to changes in body position or external forces, thus ensuring the reliability and controllability of pressure therapy. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0026] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the positioning component provided in an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the support pad provided in an embodiment of the present invention;

[0029] Figure 4 This is a cross-sectional diagram of the overall structure provided in an embodiment of the present invention;

[0030] Figure 5 Provided for embodiments of the present invention Figure 4 Enlarged view of section A in the middle;

[0031] Figure 6 This is a schematic diagram of the pressurization component provided in an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Dressing assembly; 2. Pressure assembly; 3. Positioning assembly; 11. Cover plate; 12. Annular guard plate; 13. Adhesive pad; 14. Receiving groove; 15. Degreased cotton pad; 16. Pipe; 17. Receiving port; 18. Support pad; 181. Longitudinal center hole; 182. Transverse hole; 21. Mounting hole; 22. Pressure block; 23. Shaftless spiral blade; 31. First annular protrusion; 32. First annular recess; 33. Second annular protrusion; 34. Second annular recess. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] Please see Figures 1 to 6 An adjustable local pressure device for preventing leakage during thoracentesis and paracentesis drainage, comprising:

[0036] The dressing assembly 1 includes a cover plate 11, an annular protective plate 12 fixedly connected to the bottom of the cover plate 11, and an adhesive pad 13 fixedly connected to the bottom of the annular protective plate 12. A receiving groove 14 is formed between the cover plate 11 and the annular protective plate 12. A degreased cotton pad 15 is provided in the receiving groove 14. A pipe 16 for receiving a drainage tube is opened laterally at the bottom of the cover plate 11.

[0037] The pressurizing component 2 includes a mounting hole 21 opened on the cover plate 11, a pressurizing block 22 is provided in the mounting hole 21, and a shaftless spiral blade 23 is fixedly connected to the bottom of the pressurizing block 22. The shaftless spiral blade 23 is located above the degreased cotton pad 15.

[0038] The positioning component 3 is disposed between the mounting hole 21 and the pressure block 22 and is used to position the pressure position of the pressure block 22.

[0039] When using this dressing assembly 1, the drainage tube is first placed inside the tube 16 and fixed to the skin surface by the adhesive pad 13, so that the absorbent cotton pad 15 fits the wound area. Then, by pressing down the pressure block 22, the shaftless spiral blade 23 is driven downward into the absorbent cotton pad 15. Utilizing its structure without a central axis, a flexible radial compression force can be applied to the absorbent cotton pad 15 evenly and gradually, thereby adaptively adjusting the pressure intensity on the wound surface and the root of the drainage tube, avoiding excessive local compression. Compared with traditional solid pads or flat plate structures, the shaftless spiral blade 23 can continuously disperse and buffer pressure through its spiral curved surface during vertical pressing, while also facilitating adjustment. Stable fit reduces displacement interference to the drainage tube; positioning component 3 ensures that the pressure block 22 remains at the set pressure position after adjustment, achieving reliable pressure maintenance and controllable adjustment. A medical film is then applied to the outside of the device to further enhance sealing and stability; this inhibits peritubular exudation, strengthens drainage tube fixation, and reduces the risk of infection; when the drainage tube needs to be removed, the adhesion layer between the adhesive pad 13 and the skin is partially separated, the drainage tube is removed, and the dressing component 1 is reapplied. The pressure mechanism can continue to promote closure of the puncture channel, reduce post-removal exudation, and promote wound healing, solving the problems of severe peritubular exudation, easy dislodgement of the drainage tube, and difficulty in stopping exudation after removal. The adhesive pad 13 has a receiving port 17, which connects to the conduit 16.

[0040] During the procedure, first, a thoracentesis and abdominal puncture are performed and a drainage tube is inserted. Then, the dressing assembly 1 is placed over the puncture site, allowing the drainage tube to pass through the receiving port 17 on the adhesive pad 13 and naturally enter the tube 16 at the bottom of the cover plate 11. Next, the adhesive pad 13 is tightly fitted to the skin. The design of the receiving port 17 ensures that the drainage tube is accurately guided to the preset position, while forming a good seal between the dressing, the skin, and the drainage tube, reducing fluid leakage. When it is necessary to remove the drainage tube, the adhesive pad 13 can be partially separated first, and the drainage tube can be removed from the receiving port 17. After removing the drainage tube, the dressing assembly 1 is replaced. This device can continuously promote the closure of the puncture channel through local pressure, reduce exudation after tube removal, and facilitate wound healing.

[0041] A support pad 18 is fixedly connected to the inner wall of the pipe 16. A longitudinal central hole 181 is provided on the support pad 18. Several transverse holes 182 are provided on both sides of the longitudinal central hole 181. The several transverse holes 182 are linearly distributed along the direction of extension of the longitudinal central hole 181.

[0042] During the procedure, after thoracentesis and catheter placement, the drainage tube is passed through the longitudinal central hole 181 on the support pad 18, so that the drainage tube is wrapped by the soft support pad 18 and fixed in the center of the tube 16. Then, the adhesive pad 13 of the dressing assembly 1 is applied to the skin. Controllable radial pressure is applied to the absorbent cotton pad 15 by the pressure assembly 2 to compress the puncture point. During this process, the longitudinal central hole 181 of the support pad 18 provides comfortable fixation while preventing the drainage tube from being deformed or displaced by pressure, while the transverse holes 182 linearly distributed on both sides... This allows any remaining exudate that may crawl along the tube wall to be dispersed laterally and quickly absorbed by the pressurized absorbent cotton pad 15 below. This works in conjunction with the main pressurization mechanism to more effectively keep the puncture site and surrounding area dry, enhancing the effects of preventing exudation, tube dislodgement, and infection control. Afterward, a medical dressing is applied to enhance overall sealing. When tube removal is required, the adhesion pad 13 is partially separated, and the drainage tube is pulled out from the longitudinal central hole 181. Afterward, the dressing assembly 1 is re-covered, and pressure can be applied to continue sealing the channel, reducing exudation after tube removal and promoting wound healing.

[0043] The bottom of the longitudinal center hole 181 passes through the support pad 18, and the side walls on both sides are inclined to form a downward-facing oblique opening.

[0044] During the procedure, after completing the thoracentesis and catheter placement, the drainage tube is inserted from the top of the support pad 18 into the longitudinal central hole 181. Since the bottom of the hole passes through the support pad 18 and the side walls are inclined to form a downward-facing oblique opening, the drainage tube can be smoothly guided and stably placed in the center of the tube 16. At the same time, the oblique opening design avoids the tube body from being jammed. Then, the adhesive pad 13 of the dressing assembly 1 is tightly attached to the skin to comfortably fix the drainage tube. Then, the pressure block 22 is adjusted by the pressure assembly 2 to apply controllable radial pressure to the absorbent cotton pad 15 to directly compress the puncture point. During this process, the bevel at the bottom of the longitudinal central hole 181 and the transverse hole 182 on the side work together to form a downward drainage channel. This allows the small amount of exudate crawling along the tube wall to be guided downward by the bevel and quickly absorbed by the pressurized absorbent cotton pad 15 through the transverse hole 182. This effectively prevents exudate from accumulating in the hole, improves the dryness of the puncture point and the area around the tube, and further enhances the effects of preventing exudation, preventing tube dislodgement, and preventing infection. Afterward, a medical dressing is applied to complete the seal. When the tube needs to be removed, the adhesive pad 13 is partially separated first, and the drainage tube is easily pulled out from the longitudinal central hole 181 with the bevel facing upward. Then, the dressing assembly 1 is re-covered, and pressure can be continued to seal the puncture channel, reduce exudation after tube removal, and promote wound healing.

[0045] The edge of the degreased cotton pad 15 extends to the outside of the receiving groove 14.

[0046] During the procedure, after completing the thoracentesis and catheter placement, the drainage tube is passed through the longitudinal central hole 181 of the support pad 18, and then the adhesive pad 13 of the dressing assembly 1 is attached to the skin. At this time, the absorbent cotton pad 15 extending to the outside of the receiving groove 14 can directly and fully contact the skin around the puncture point and the base of the drainage tube, forming an immediate absorption barrier. When removing the tube, the adhesive pad 13 is partially separated first, the drainage tube is removed, and the dressing assembly 1 is replaced. The overflowing absorbent cotton pad 15 can better fill and close the puncture channel after tube removal under the continuous pressure of the pressure assembly 2, reducing exudation and promoting healing.

[0047] The inner diameter of the bottom of the shaftless helical blade 23 is larger than the outer diameter of the drainage tube.

[0048] During operation, when the pressure component 2 drives the shaftless spiral blade 23 to press down, because the inner diameter of the blade bottom is larger than the outer diameter of the drainage tube, the blade only applies uniform and adjustable downward pressure to the surrounding absorbent cotton pad 15, without directly squeezing or compressing the drainage tube itself. This design ensures that the pressure is concentrated on the tissue around the puncture point, effectively inhibiting exudation and enhancing fixation, while completely avoiding drainage tube blockage, deformation, or patient discomfort caused by improper pressure, thus ensuring smooth drainage and treatment safety. When tube removal is required, the adhesion pad 13 is partially separated first, and after the drainage tube is removed, the device can continue to promote the closure of the puncture channel by applying pressure, reducing exudation after tube removal and facilitating wound healing.

[0049] Positioning component 3 includes:

[0050] Several first annular protrusions 31 are fixedly connected to the inner wall of the mounting hole 21;

[0051] Several first annular recesses 32 are formed on the inner wall of the mounting hole 21;

[0052] Several second annular protrusions 33 are fixedly connected to the side wall of the pressure block 22, and each of them corresponds to the first annular recess 32.

[0053] Several second annular recesses 34 are provided on the side wall of the pressure block 22, and each of them corresponds to the first annular protrusion 31.

[0054] A plurality of first annular protrusions 31 and a plurality of first annular recesses 32 are alternately distributed in the axial direction of the mounting hole 21; a plurality of second annular protrusions 33 and a plurality of second annular recesses 34 are alternately distributed in the axial direction of the pressure block 22, and the cross-sections of the first annular protrusions 31 and the second annular protrusions 33 are both arc-shaped protrusions.

[0055] During operation, the pressure block 22 inside the mounting hole 21 is adjusted by rotating or pressing. The second annular protrusions 33 and second annular recesses 34, which are alternately distributed on its side wall, gradually engage with the corresponding first annular recesses 32 and first annular protrusions 31, which are alternately distributed on the inner wall of the mounting hole 21. Since all the protrusions have an arc-shaped cross-section, the adjustment process is smooth and has a clear sense of the pressure level. This structure allows the pressure block 22 to be locked at different heights with discrete and repeatable fixed positions, thereby accurately and stably maintaining the preset pressure level at the puncture point. This effectively prevents unexpected pressure changes caused by patient movement or external forces, ensuring the reliability and safety of pressure therapy.

[0056] Working principle: After thoracentesis and abdominal puncture and placement of the drainage tube, the adhesive pad 13 of the dressing assembly 1 is first attached to the skin, allowing the drainage tube to pass through the receiving port 17 into the channel 16, and be fixed through the longitudinal central hole 181 of the support pad 18; then the pressure block 22 is pressed down, driving the shaftless spiral blade 23 to press into the absorbent cotton pad 15, applying uniform and controllable radial pressure to the puncture point and surrounding tissue to inhibit exudation, enhance drainage tube fixation and reduce the risk of infection. At the same time, the positioning assembly 3 ensures that the pressure block 22 is stable in the set position and maintains reliable pressure through the engagement of the first annular protrusion 31 and the second annular recess 34 and the engagement of the second annular protrusion 33 and the first annular recess 32; afterwards, a medical film is covered to improve the seal; when removing the tube, the adhesive pad 13 is partially separated to remove the drainage tube, and after the dressing assembly 1 is re-covered, the pressure mechanism can continue to promote the closure of the puncture channel, reduce exudation after tube removal, and accelerate wound healing.

[0057] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An adjustable local pressure device for preventing leakage of drainage tubes used in thoracentesis and peritoneal puncture, characterized in that, include: The dressing assembly (1) includes a cover plate (11), an annular guard plate (12) fixedly connected to the bottom of the cover plate (11), and an adhesive pad (13) fixedly connected to the bottom of the annular guard plate (12). A receiving groove (14) is formed between the cover plate (11) and the annular guard plate (12). A degreased cotton pad (15) is provided in the receiving groove (14). A pipe (16) for receiving a drainage tube is opened laterally at the bottom of the cover plate (11). The pressurizing assembly (2) includes a mounting hole (21) opened on the cover plate (11), a pressurizing block (22) is provided in the mounting hole (21), and a shaftless spiral blade (23) is fixedly connected to the bottom of the pressurizing block (22), and the shaftless spiral blade (23) is located above the degreased cotton pad (15); The positioning component (3) is disposed between the mounting hole (21) and the pressure block (22) for positioning the pressure position of the pressure block (22).

2. The adjustable local pressurization device for preventing leakage of thoracotomy and abdominal puncture drainage tubes according to claim 1, characterized in that, The adhesive pad (13) has a receiving opening (17), which is connected to the pipe (16).

3. The adjustable local pressurization device for preventing leakage of thoracotomy and abdominal puncture drainage tubes according to claim 2, characterized in that, The inner wall of the pipe (16) is fixedly connected to a support pad (18), and a longitudinal central hole (181) is opened on the support pad (18). Several transverse holes (182) are opened on both sides of the longitudinal central hole (181), and the several transverse holes (182) are linearly distributed along the direction of the longitudinal central hole (181).

4. The adjustable local pressure device for preventing leakage of thoracotomy and abdominal puncture drainage tubes according to claim 3, characterized in that, The bottom of the longitudinal central hole (181) penetrates the support pad (18), and the side walls on both sides are inclined to form a downward-facing oblique opening.

5. The adjustable local pressurization device for preventing leakage of thoracotomy and abdominal puncture drainage tubes according to claim 1, characterized in that, The edge portion of the degreased cotton pad (15) extends to the outside of the receiving groove (14).

6. The adjustable local pressurization device for preventing leakage of thoracotomy and abdominal puncture drainage tubes according to claim 1, characterized in that, The inner diameter of the bottom of the shaftless helical blade (23) is larger than the outer diameter of the drainage tube.

7. The adjustable local pressurization device for preventing leakage of thoracotomy and abdominal puncture drainage tubes according to claim 1, characterized in that, The positioning component (3) includes: Several first annular protrusions (31) are fixedly connected to the inner wall of the mounting hole (21); Several first annular notches (32) are formed on the inner wall of the mounting hole (21); Several second annular protrusions (33) are fixedly connected to the side wall of the pressure block (22), and each of them corresponds to the first annular recess (32); Several second annular recesses (34) are provided on the sidewall of the pressure block (22) and correspond to the first annular protrusion (31).

8. The adjustable local pressurization device for preventing leakage of thoracotomy and abdominal puncture drainage tubes according to claim 7, characterized in that, A plurality of first annular protrusions (31) and a plurality of first annular recesses (32) are alternately distributed in the axial direction of the mounting hole (21); a plurality of second annular protrusions (33) and a plurality of second annular recesses (34) are alternately distributed in the axial direction of the pressure block (22), and the cross sections of the first annular protrusions (31) and the second annular protrusions (33) are both arc-shaped protrusions.

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