A portable wound negative pressure drainage device with self-regulating control

Abstract

The present invention relates to the field of medical device technology, and in particular to a portable wound negative pressure drainage device with self-regulating control. The portable wound negative pressure drainage device with self-regulating control comprises a sponge dressing, a drainage component, a suction shell, a filter regulating valve and an adjustable suction pump. The present invention can utilize a filter regulating valve and an adjustable suction pump to perform continuous rapid pressurization suction for multiple stages, apply negative pressure to the wound, so as to promote drainage of the wound, reduce the accumulation of exudate, and contribute to the healing and recovery of the wound. The negative pressure can be accurately adjusted according to actual conditions to ensure effective treatment and management of wound needs. In addition, the drainage component is used for split-pipe suction. When one of the pipes is blocked, the other pipe can still maintain drainage, reduce the impact of blockage on the treatment effect, and ensure smooth drainage.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a portable wound surface negative pressure drainage device with self-regulating control. Background Art

[0002] Negative pressure closed drainage technology (VSD) refers to the use of polyethylene alcohol hydrated seaweed salt sponge dressings containing drainage tubes to cover or fill the wound surface of skin and soft tissue defects, and then use biological semipermeable membranes to seal it to make it a closed space. Finally, the drainage tube is connected to the negative pressure source to promote wound healing through negative pressure. It is generally set under negative pressure conditions of 125mmhg~45mmhg, and continuous suction is performed within 48 hours after surgery. Intermittent suction is performed 48 hours after surgery (suction for 30 minutes and stop for 5 minutes). The time limit of intermittent suction can maintain effective negative pressure for 5-7 days, and it is generally removed or replaced after 7 days. For large areas of bone exposure and tendon exposure, VSD is generally performed 3-4 times. For wounds with more serious contamination, such as crushing, bullet injuries, explosion injuries, etc., it may be as long as 15-20 days.

[0003] However, during the negative pressure drainage process, the existing negative pressure drainage devices are prone to inappropriate negative pressure, such as causing the negative pressure to be too high or too low, thereby affecting the wound healing effect. At the same time, during the wound drainage process, tissue fragments, necrotic tissue or exudate may accumulate in the drainage tube, gradually accumulating to form a blockage. Especially in the case of wound infection or a lot of secretions, the risk of blockage is higher, which can easily lead to drainage interruption, and then cause delayed wound healing, increased infection risk and other problems. Summary of the invention

[0004] Based on this, it is necessary to provide a portable wound negative pressure drainage device with self-regulating control to solve at least one technical problem in the background technology.

[0005] A portable wound negative pressure drainage device with self-adjusting control comprises a sponge dressing, a drainage component, a suction shell, a filter regulating valve and an adjustable suction pump, wherein the bottom surface of the sponge dressing is applied on the patient's wound surface, one side of the top surface of the sponge dressing is concavely provided with an inclined mounting surface, the inclined mounting surface is concavely provided with a first drainage mounting hole, a second drainage mounting hole is concavely provided in the middle of the first drainage mounting hole, the drainage component is installed in the first drainage mounting hole and the second drainage mounting hole, a mounting cavity is formed in the hollow top of the suction shell, a suction hole is concavely provided on one side of the mounting cavity, a suction mounting pipe is arranged in the suction hole, a three-way joint is arranged at the outer end of the suction mounting pipe, the three-way joint is connected to the drainage component through a pipeline, and the filter regulating valve and the adjustable suction pump are both installed in the mounting cavity.

[0006] As a further improvement of the present invention, the drainage assembly includes a drainage tube, a connecting cover and an installation cover, the drainage tube is arranged in the second drainage installation hole, a plurality of drainage holes are recessed in a circumferential array at the bottom of the outer wall of the drainage tube, a liquid separation drainage tube is convexly arranged in the middle of the bottom surface of the drainage tube, the bottom surface of the connecting cover is clamped and installed on the top surface of the first drainage installation hole, a main connecting installation tube is convexly arranged in the middle of the bottom surface of the connecting cover, the bottom of the main connecting installation tube is connected to the top of the drainage tube, a connecting installation ring is convexly arranged on the top of the outer wall of the connecting cover, a liquid separation connecting tube is convexly arranged in the middle of the bottom surface of the connecting cover, the liquid separation connecting tube is arranged in the internal cavity of the main connecting installation tube, and the liquid separation connecting tube is The bottom of the connecting pipe is connected to the top of the liquid separation drainage tube, an inclined thin connecting tube is convexly provided on the top surface of the connecting cover, and the internal cavity of the inclined thin connecting tube is connected to the internal cavity of the liquid separation connecting tube, a first liquid separation hole is recessed on the outer edge of the top surface of the main connecting mounting tube, a thick liquid separation tube is provided in the first liquid separation hole, a first liquid outlet pipe and a second liquid outlet pipe are recessed in the middle of the top surface of the mounting cover respectively, a clamping ring is convexly provided on the outer edge of the bottom surface of the mounting cover, the clamping ring is connected to the connecting mounting ring, and the outer wall of the mounting cover is clamped and installed on the inner wall of the first drainage mounting hole, the bottom of the first liquid outlet pipe is connected to the top of the thick liquid separation pipe, and the bottom of the second liquid outlet pipe is connected to the inclined thin connecting tube.

[0007] As a further improvement of the present invention, a filter connecting hole is recessed on one side of the bottom surface of the installation cavity adjacent to the suction hole, a filter connecting pipe is protruded from the filter connecting hole, a pump body mounting platform is protruded from the other side of the bottom surface of the installation cavity, a control motor mounting groove is recessed on one side of the top surface of the installation cavity adjacent to the suction hole, an air outlet hole is recessed on the other side of the top surface of the installation cavity, an air outlet pipe is arranged in the air outlet hole, a control panel is arranged on the top surface of the suction shell, a collecting installation cavity is recessed on one side of the bottom surface of the suction shell adjacent to the suction hole, a threaded groove is recessed on the outer edge of the top surface of the collecting installation cavity, a collecting bottle is arranged in the collecting installation cavity, and the top of the collecting bottle is threadedly connected to the threaded groove, the internal cavity of the collecting bottle is connected to the filter connecting hole, indicator grooves are recessed at both ends of the collecting installation cavity for observing the collection situation in the collecting bottle, and a battery installation cavity is formed in the hollow on one side of the bottom of the suction shell away from the suction hole, and a storage battery is arranged in the battery installation cavity.

[0008] As a further improvement of the present invention, the filter regulating valve comprises a connecting filter tube, a semicircular water filter net, a valve body, an adjusting control motor and an air outlet adjusting element, the outer end of the connecting filter tube is connected to the inner end of the suction mounting tube, a discharge pipe is convexly provided in the middle of the bottom surface of the connecting filter tube, the bottom end of the discharge pipe is connected to the top of the filter connecting tube, a filter mounting ring is convexly provided at the bottom of the inner wall of the discharge pipe, the bottom of the semicircular water filter net is installed at one end of the filter mounting ring away from the filter connecting hole, the top of the semicircular water filter net is connected to the top of the inner wall of the connecting filter tube, a semicircular filter plate is convexly provided at the bottom of the outer side of the semicircular water filter net, an elastic filter net is convexly provided at the outer end of the top surface of the semicircular filter plate, the top of the elastic filter net is connected to the top of the inner wall of the connecting filter tube, the outer end of the valve body is installed in the connecting filter tube, the top of the adjusting control motor is installed in the control motor mounting groove, the bottom of the adjusting control motor is connected to the middle of the top surface of the valve body, the bottom of the output shaft of the adjusting control motor is convexly provided with an adjusting disk, and the inner end of the air outlet adjusting element is connected to the outer end of the valve body.

[0009] As a further improvement of the present invention, a regulating cavity is formed in the interior of the valve body, an regulating air inlet hole is recessed at the inner end of the regulating cavity, the regulating air inlet hole is connected to the inner end of the connecting filter tube, an regulating exhaust hole is recessed at the outer end of the regulating cavity, an regulating tube is protruded from the middle of the bottom surface of the regulating cavity, and the bottom surface of the regulating plate is abutted against the top surface of the regulating tube, a plurality of inclined guide plates are protruded along the circumferential direction on the outer edge of the bottom surface of the regulating cavity, a connecting exhaust hole is recessed on the outer side of the regulating tube, a connecting exhaust pipe is protruded from the connecting exhaust hole, and the connecting exhaust pipe is arranged at the inner end of the regulating exhaust hole.

[0010] As a further improvement of the present invention, the air outlet adjusting element includes an air outlet connecting pipe, a sliding shaft mounting tube, an adjusting sliding shaft and an adjusting closing disk. The inner end of the air outlet connecting pipe is installed at the outer end of the adjusting exhaust hole. A plurality of connecting and mounting columns are protruding from the middle part of the inner wall of the air outlet connecting pipe along the circumferential direction. The outer wall of the sliding shaft mounting tube is installed in the plurality of connecting and mounting columns. The middle part of the adjusting sliding shaft is slidably installed in the sliding shaft mounting tube. The middle part of the adjusting closing disk is installed at the inner end of the sliding shaft mounting tube. A compression spring is arranged between the outer side of the adjusting closing disk and the inner end of the sliding shaft mounting tube. The inner side of the adjusting closing disk is pressed against the outer end of the connecting exhaust pipe.

[0011] As a further improvement of the present invention, the adjustable suction pump includes an installation shell element, a driving element, a fixed boosting element and a suction drive motor. The installation shell element is installed in a pump body mounting platform. The interior of the installation shell element is hollow to form a boosting cavity. The driving element and the fixed boosting element are both installed in the boosting cavity. The suction drive motor is installed on a side of the installation cavity away from the suction hole, and the suction drive motor is connected to the driving element.

[0012] As a further improvement of the present invention, the installation shell element includes a suction shell, a boost outer cylinder and an exhaust shell. The bottom of the suction shell is installed on one side of the pump body mounting platform adjacent to the suction hole, and the outer side of the suction shell is connected to the outer end of the outlet connecting pipe. A suction hole is recessed in the middle of the suction shell, and a rotating mounting hole is recessed on the inner side of the inner wall of the suction hole. The bottom of the exhaust shell is installed at the other end of the pump body mounting platform. A driving exhaust pipe is protruding from the top of the exhaust shell, and the top of the driving exhaust pipe is connected to the bottom end of the outlet pipe. A driving cone pipe is provided in the middle of the exhaust shell, and the driving cone pipe is arranged opposite to the suction hole. The two sides of the boost outer cylinder are respectively connected to the inner sides of the suction shell and the exhaust shell, and the boost cavity is formed in the boost outer cylinder.

[0013] As a further improvement of the present invention, the driving element includes a driving seat, a boost disk, a driving shaft and a plurality of boost fans. The driving seat is installed in the middle part of the outer side of the exhaust shell, and a connecting boost ring is convexly provided in the middle part of the outer side of the boost disk. The connecting boost ring is rotatably installed in the rotating installation hole. A plurality of boost spiral grooves are recessed along the circumferential direction of the outer wall of the boost disk, and the boost spiral grooves connect the intake hole with the boost cavity. The two ends of the driving shaft are respectively installed on the driving seat and the middle part of the boost disk, and the outer end of the driving shaft is connected to the suction drive motor. The plurality of boost fans are installed in the driving shaft at intervals along the length direction.

[0014] As a further improvement of the present invention, the fixed boost element includes a plurality of fixed boost rings and an output boost ring. The outer walls of the plurality of fixed boost rings are respectively installed in the boost cavity at intervals along the length direction, and the plurality of fixed boost rings are respectively alternately arranged with the plurality of boost fans. The output boost ring is installed on the inner side of the suction shell, and the side walls of the plurality of fixed boost rings and the output boost ring are both recessed with spiral boost grooves.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. The present invention can utilize a filter regulating valve and an adjustable suction pump to perform continuous rapid pressurization suction for multiple stages, thereby applying a controllable negative pressure to the wound surface to promote drainage of the wound surface, reduce accumulation of exudate, and contribute to wound healing and recovery. The negative pressure can also be accurately adjusted according to actual conditions to ensure effective treatment and management of wound surface needs.

[0017] 2. The present invention can utilize the drainage assembly to perform separate pipe suction. When one of the pipes is blocked, the other pipe can still maintain drainage, thereby reducing the impact of the blockage on the treatment effect and ensuring smooth drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 1 is a fracture view of an embodiment of the present invention.

[0019] Figure 2 1 is an exploded view of a sponge dressing and a drainage assembly in one embodiment of the present invention.

[0020] Figure 3 It is a schematic diagram of the interior of a suction housing, a filter regulating valve and a regulating suction pump in one embodiment of the present invention.

[0021] Figure 4 FIG. 1 is an internal schematic diagram of a filter regulating valve in one embodiment of the present invention.

[0022] Figure 5 FIG. 1 is a schematic diagram of the interior of a valve body in one embodiment of the present invention.

[0023] Figure 6 Schematic diagram of the interior of an adjustable suction pump in one embodiment of the present invention.

[0024] Figure 7 FIG. 4 is a three-dimensional schematic diagram of a driving element in an embodiment of the present invention.

[0025] Figure 8 FIG. 1 is an exploded view of a fixed pressurizing element in one embodiment of the present invention.

[0026] Fig. 9 It is a partial exploded view of a fixed pressurizing element in another embodiment of the present invention.

[0027] In the figure:

[0028] 10. Sponge dressing; 11. Inclined mounting surface; 12. First drainage mounting hole; 13. Second drainage mounting hole; 20. Drainage assembly; 21. Drainage tube; 22. Connecting cover; 23. Mounting cover; 211. Drainage hole; 212. Liquid separation drainage tube; 221. Main connecting mounting tube; 220. Connecting mounting ring; 222. Liquid separation connecting tube; 223. Inclined thin connecting tube; 224. First liquid separation hole; 225. Thick liquid separation tube; 231. First liquid outlet tube; 232. Second liquid outlet tube; 233. Clamping ring; 30. Suction housing ;31, installation cavity;311, suction hole;312, suction installation pipe;313, three-way joint;310, filter connection hole;319, filter connection pipe;314, pump body installation platform;315, control motor installation slot;316, air outlet;317, air outlet pipe;32, control panel;33, collection installation cavity;331, threaded groove;332, collection bottle;333, indicator groove;34, battery installation cavity;35, battery;40, filter regulating valve;41, filter pipe connection;45, semicircular water filter;42, valve body ; 43, regulating control motor; 44, air outlet regulating element; 411, drainage pipe; 412, filter mounting ring; 451, semicircular filter plate; 431, regulating disk; 421, regulating cavity; 422, regulating air inlet hole; 420, regulating exhaust hole; 423, regulating pipe; 424, inclined guide plate; 425, connecting exhaust pipe; 426, connecting exhaust hole; 441, air outlet connecting pipe; 442, adjusting sliding shaft; 444, sliding shaft mounting pipe; 443, adjusting closing disk; 445, connecting mounting column; 50, adjusting suction pump; 5 1. Install the shell element; 52. Drive element; 53. Fixed boost element; 54. Boost chamber; 511. Suction shell; 512. Boost outer cylinder; 513. Exhaust shell; 514. Intake hole; 515. Rotary mounting hole; 516. Drive exhaust pipe; 518. Drive cone pipe; 521. Drive seat; 522. Drive shaft; 523. Boost fan; 524. Boost disk; 525. Connect boost ring; 526. Boost spiral groove; 531. Fixed boost ring; 532. Output boost ring; 530. Spiral boost groove. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0030] In the description of the present invention, it should be noted that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] See also Figures 1 to 9 A portable wound negative pressure drainage device with self-adjusting control comprises a sponge dressing 10, a drainage component 20, a suction shell 30, a filter regulating valve 40 and an adjustable suction pump 50. The bottom surface of the sponge dressing 10 is applied on the patient's wound surface. One side of the top surface of the sponge dressing 10 is concavely provided with an inclined mounting surface 11, and the inclined mounting surface 11 is concavely provided with a first drainage mounting hole 12. A second drainage mounting hole 13 is concavely provided in the middle of the first drainage mounting hole 12. The drainage component 20 is installed in the first drainage mounting hole 12 and the second drainage mounting hole 13. The top of the suction shell 30 is hollow to form an installation cavity 31, and a suction hole 311 is concavely provided on one side of the installation cavity 31. A suction installation pipe 312 is arranged in the suction hole 311, and a three-way joint 313 is arranged at the outer end of the suction installation pipe 312. The three-way joint 313 is connected to the drainage component 20 through a pipeline. The filter regulating valve 40 and the adjustable suction pump 50 are both installed in the installation cavity 31.

[0033] The drainage assembly 20 includes a drainage tube 21, a connecting cover 22 and a mounting cover 23. The drainage tube 21 is arranged in the second drainage mounting hole 13. A plurality of drainage holes 211 are concavely arranged in a circumferential array at the bottom of the outer wall of the drainage tube 21. A liquid separation drainage tube 212 is convexly arranged in the middle of the bottom surface of the drainage tube 21. The bottom surface of the connecting cover 22 is clamped and mounted on the top surface of the first drainage mounting hole 12. A main connecting mounting tube 221 is convexly arranged in the middle of the bottom surface of the connecting cover 22. The bottom of the main connecting mounting tube 221 is connected to the top of the drainage tube 21. A connecting mounting ring 220 is convexly arranged on the top of the outer wall of the connecting cover 22. A liquid separation connecting tube 222 is convexly arranged in the middle of the bottom surface of the connecting cover 22. The liquid separation connecting tube 222 is arranged in the internal cavity of the main connecting mounting tube 221. The bottom of the liquid separation connecting tube 222 is connected to the liquid separation drainage The top of the tube 212 is connected, and an inclined thin connecting tube 223 is convexly provided on the top surface of the connecting cover 22, and the internal cavity of the inclined thin connecting tube 223 is connected to the internal cavity of the liquid separation connecting tube 222. A first liquid separation hole 224 is recessed on the outer edge of the top surface of the main connecting mounting tube 221, and a thick liquid separation tube 225 is provided in the first liquid separation hole 224. A first liquid outlet pipe 231 and a second liquid outlet pipe 232 are recessed in the middle of the top surface of the mounting cover 23, respectively. A clamping ring 233 is convexly provided on the outer edge of the bottom surface of the mounting cover 23, and the clamping ring 233 is connected to the connecting mounting ring 220, and the outer wall of the mounting cover 23 is clamped and installed on the inner wall of the first drainage mounting hole 12, the bottom of the first liquid outlet pipe 231 is connected to the top of the thick liquid separation pipe 225, and the bottom of the second liquid outlet pipe 232 is connected to the inclined thin connecting tube 223.

[0034] A filter connection hole 310 is recessed on one side of the bottom surface of the installation cavity 31 adjacent to the suction hole 311, and a filter connection pipe 319 is convexly provided on the filter connection hole 310. A pump body mounting platform 314 is convexly provided on the other side of the bottom surface of the installation cavity 31. A control motor mounting groove 315 is recessed on one side of the top surface of the installation cavity 31 adjacent to the suction hole 311. An air outlet hole 316 is recessed on the other side of the top surface of the installation cavity 31. An air outlet pipe 317 is provided in the air outlet hole 316. A control panel 32 is provided on the top surface of the suction shell 30. A collecting installation cavity 33 is recessed in the side, a threaded groove 331 is recessed on the outer edge of the top surface of the collecting installation cavity 33, a collecting bottle 332 is arranged in the collecting installation cavity 33, and the top of the collecting bottle 332 is threadedly connected to the threaded groove 331, the internal cavity of the collecting bottle 332 is connected to the filter connecting hole 310, and indicator grooves 333 are recessed at both ends of the collecting installation cavity 33 for observing the collection situation in the collecting bottle 332, and a battery installation cavity 34 is hollowly formed on one side of the bottom of the suction shell 30 away from the suction hole 311, and a battery 35 is arranged in the battery installation cavity 34.

[0035] The filter regulating valve 40 includes a connecting filter tube 41, a semicircular filter screen 45, a valve body 42, an adjusting control motor 43 and an air outlet adjusting element 44. The outer end of the connecting filter tube 41 is connected to the inner end of the suction installation tube 312. A discharge pipe 411 is convexly provided in the middle of the bottom surface of the connecting filter tube 41. The bottom end of the discharge pipe 411 is connected to the top of the filter connecting tube 319. A filter installation ring 412 is convexly provided at the bottom of the inner wall of the discharge pipe 411. The bottom of the semicircular filter screen 45 is installed at the end of the filter installation ring 412 away from the filter connecting hole 310. The top of the semicircular filter screen 45 is connected to the connecting filter. The top of the inner wall of the tube 41 is connected, a semicircular filter plate 451 is convexly provided at the bottom of the outer side of the semicircular water filter net 45, an elastic filter net is convexly provided at the outer end of the top surface of the semicircular filter plate 451, the top of the elastic filter net is connected to the top of the inner wall of the connecting filter tube 41, the outer end of the valve body 42 is installed on the inner end of the connecting filter tube 41, the top of the adjusting control motor 43 is installed in the control motor installation groove 315, the bottom of the adjusting control motor 43 is connected to the middle of the top surface of the valve body 42, an adjusting disk 431 is convexly provided at the bottom of the output shaft of the adjusting control motor 43, and the inner end of the air outlet adjusting element 44 is connected to the outer end of the valve body 42.

[0036] The valve body 42 is hollow inside and has an adjusting cavity 421 formed therein. An adjusting air inlet hole 422 is recessed at the inner end of the adjusting cavity 421. The adjusting air inlet hole 422 is connected to the inner end of the connecting filter tube 41. An adjusting exhaust hole 420 is recessed at the outer end of the adjusting cavity 421. An adjusting tube 423 is protrudingly provided in the middle of the bottom surface of the adjusting cavity 421, and the bottom surface of the adjusting disk 431 is abutted against the top surface of the adjusting tube 423. A plurality of inclined guide plates 424 are protrudingly provided along the circumferential direction at the outer edge of the bottom surface of the adjusting cavity 421. A connecting exhaust hole 426 is recessed at the outer side of the adjusting tube 423. A connecting exhaust pipe 425 is protrudingly provided at the connecting exhaust hole 426, and the connecting exhaust pipe 425 is arranged at the inner end of the adjusting exhaust hole 420.

[0037] The air outlet regulating element 44 includes an air outlet connecting pipe 441, a sliding shaft mounting tube 444, an adjusting sliding shaft 442 and an adjusting closing disk 443. The inner end of the air outlet connecting pipe 441 is installed on the outer end of the regulating exhaust hole 420. A plurality of connecting and mounting columns 445 are protruded from the middle of the inner wall of the air outlet connecting pipe 441 along the circumferential direction. The outer wall of the sliding shaft mounting tube 444 is installed in a plurality of connecting and mounting columns 445. The middle part of the adjusting sliding shaft 442 is slidably installed in the sliding shaft mounting tube 444. The middle part of the adjusting closing disk 443 is installed on the inner end of the sliding shaft mounting tube 444. A compression spring is provided between the outer side of the adjusting closing disk 443 and the inner end of the sliding shaft mounting tube 444. The inner side of the adjusting closing disk 443 is pressed against the outer end of the connecting exhaust pipe 425.

[0038] The adjustable suction pump 50 includes an installation shell element 51, a driving element 52, a fixed boosting element 53 and a suction drive motor. The installation shell element 51 is installed in the pump body mounting platform 314. The interior of the installation shell element 51 is hollow to form a boosting cavity 54. The driving element 52 and the fixed boosting element 53 are both installed in the boosting cavity 54. The suction drive motor is installed on the side of the installation cavity 31 away from the suction hole 311, and the suction drive motor is connected to the driving element 52.

[0039] The mounting shell element 51 includes a suction shell 511, a pressurizing outer cylinder 512 and an exhaust shell 513. The bottom of the suction shell 511 is mounted on one side of the pump body mounting platform 314 adjacent to the suction hole 311, and the outer side of the suction shell 511 is connected to the outer end of the air outlet connecting pipe 441. An air intake hole 514 is recessed in the middle of the suction shell 511, and a rotating mounting hole 515 is recessed on the inner side of the inner wall of the air intake hole 514. The bottom of the exhaust shell 513 is mounted on the other end of the pump body mounting platform 314. A driving exhaust pipe 516 is protruding from the top of the exhaust shell 513, and the top end of the driving exhaust pipe 516 is connected to the bottom end of the air outlet pipe 317. A driving cone pipe 518 is disposed in the middle of the exhaust shell 513, and the driving cone pipe 518 is disposed opposite to the air intake hole 514. Both sides of the pressurizing outer cylinder 512 are respectively connected to the inner sides of the suction shell 511 and the exhaust shell 513, and a pressurizing cavity 54 is formed in the pressurizing outer cylinder 512.

[0040] The driving element 52 includes a driving seat 521, a boost disk 524, a driving shaft 522 and a plurality of boost fans 523. The driving seat 521 is installed in the middle part of the outer side of the exhaust shell 513. A connecting boost ring 525 is convexly provided in the middle part of the outer side of the boost disk 524. The connecting boost ring 525 is rotatably installed in the rotating installation hole 515. The outer wall of the boost disk 524 is recessed with a plurality of boost spiral grooves 526 along the circumferential direction, and the boost spiral grooves 526 connect the air intake hole 514 with the boost cavity 54. The two ends of the driving shaft 522 are respectively installed on the driving seat 521 and the middle part of the boost disk 524, and the outer end of the driving shaft 522 is connected to the suction drive motor. A plurality of boost fans 523 are installed in the driving shaft 522 at intervals along the length direction.

[0041] The fixed boost element 53 includes a plurality of fixed boost rings 531 and an output boost ring 532. The outer walls of the plurality of fixed boost rings 531 are respectively installed in the boost cavity 54 at intervals along the length direction, and the plurality of fixed boost rings 531 are respectively alternately arranged with the plurality of boost fans 523. The output boost ring 532 is installed on the inner side of the suction shell 511, and the side walls of the plurality of fixed boost rings 531 and the output boost ring 532 are both recessed with spiral boost grooves 530.

[0042] For example, in one embodiment: the bottom of the drainage tube 21 is conical.

[0043] For example, in one embodiment, before negative pressure drainage, the wound is thoroughly cleaned to ensure blood supply to the wound surface and the skin around the wound to prevent active bleeding, and 75% alcohol is used to wipe off sebum, dandruff, etc. Then, damaged blood vessels, nerves, tendons, etc. are repaired according to the characteristics of the tissue. Then, the sponge dressing 10 is cut according to the shape of the soft tissue and bone tissue wound with blood supply, and applied to the patient's wound. Then, the sponge dressing 10 and the entire wound are sealed with a medical sterile dressing, and holes are cut at the positions of the medical sterile dressing corresponding to the first liquid outlet pipe 231 and the second liquid outlet pipe 232 to expose the first liquid outlet pipe 231 and the second liquid outlet pipe 232. Then, the top ends of the first liquid outlet pipe 231 and the second liquid outlet pipe 232 are connected to the two ends of the outer side of the three-way joint 313 through pipes, and then the adjustment control motor 43 and the suction drive motor are started in the control panel 32, wherein the suction drive motor drives the drive shaft 522 to rotate at the speed of the adjustment value according to the negative pressure value set by the control panel 32, so that multiple boosters are The fan 523 follows the rotation. Since the multiple fixed boost rings 531 are alternately arranged with the multiple boost fans 523, and the side walls of the multiple fixed boost rings 531 and the output boost ring 532 are both recessed with spiral boost grooves 530, when the boost fan 523 rotates, it will enable continuous rapid boost suction for multiple stages to produce a negative pressure suction effect, and enable the adjustment slide shaft 442 to move outward along the slide shaft mounting tube 444, so that the adjustment sealing disk 443 follows the movement, so that the exhaust pipe 425 is connected and opened. At the same time, the adjustment control motor 43 will adjust the opening and closing amplitude of the adjustment disk 431 according to the negative pressure value of the control panel 32, and then suction the drainage component 20, so as to achieve accurate adjustment of the negative pressure according to the actual situation, and ensure effective treatment and management of wound surface needs.

[0044] For example, in one embodiment: when suction is performed, the suction force will be transmitted to the drainage component 20 along the connected pipe, so that the drainage tube 21 will perform suction, and the exudate from the wound surface will be drained by negative pressure suction, so that the exudate from the wound surface will enter the drainage tube 21 and the liquid separation drainage tube 212 along the multiple drainage holes 211, and enter the first liquid outlet tube 231 and the second liquid outlet tube 232 along the thick liquid separation tube 225 and the inclined thin connecting tube 223 respectively, and the exudate will be sucked into the suction installation tube 312 along the two pipes and the three-way joint 313 respectively, and then when one of the pipes is blocked, the other pipe can still maintain drainage, thereby reducing the impact of blockage on the treatment effect and ensuring smooth drainage.

[0045] It then enters the connecting filter tube 41. Since an elastic filter net is protruding from the outer end of the top surface of the semicircular filter plate 451, the top of the elastic filter net is connected to the top of the inner wall of the connecting filter tube 41. The elastic filter net will filter larger particles such as blood clots, necrotic tissue, pus scabs or exudate clots in the exudate, and make them fall directly into the collection bottle 332. The semicircular water filter net 45 will filter the exudate, so that the exudate falls into the collection bottle 332 through the semicircular filter plate 451.

[0046] For example, in one embodiment: when regular flushing is required, one of the tubes is unplugged and connected to the flushing device, and then the flushing device is started to use saline to remove blood clots, thrombi, tissue fragments, exudates and other accumulations in the tube to keep the drainage unobstructed.

[0047] For example, in one embodiment: the control panel 32 is provided with an alarm light. A position sensor is provided in the regulating closure disk 443. When both pipes are blocked and the regulating suction pump 50 is still performing suction, the pressure in the outlet connecting pipe 441 and the valve body 42 will increase, causing the regulating closure disk 443 and the regulating sliding shaft 442 to slide further outward. The position sensor will identify the difference between the current position and the set negative pressure value position, and then turn off or reduce the speed of the suction drive motor to prevent continuous suction from increasing the internal pressure of the blocked pipe, causing the pipe to rupture or break. At the same time, the position sensor will send a signal to the alarm light to prompt medical staff to use methods such as squeezing the pipe and flushing the pipe to solve the blockage.

[0048] Installation process: The drainage tube 21 is set in the second drainage installation hole 13, the bottom surface of the connecting cover 22 is clamped and installed on the top surface of the first drainage installation hole 12, the bottom of the main connecting installation tube 221 is connected to the top of the drainage tube 21, the bottom of the liquid separation connecting tube 222 is connected to the top of the liquid separation drainage tube 212, the clamping ring 233 is connected to the connecting installation ring 220, and the outer wall of the installation cover 23 is clamped and installed on the inner wall of the first drainage installation hole 12, the bottom of the main connecting installation tube 221 is connected to the top of the drainage tube 21, the first liquid outlet pipe 231 and the second liquid outlet pipe 232 are respectively connected to the two ends of the outer side of the three-way joint 313 through pipes, the top of the collecting bottle 332 is threadedly connected to the thread groove 331, and the filter tube 41 is connected. The outer end is connected to the inner end of the suction installation tube 312, the bottom end of the discharge pipe 411 is connected to the top of the filter connecting pipe 319, the bottom of the semicircular water filter net 45 is installed on the end of the filter installation ring 412 away from the filter connecting hole 310, the top of the semicircular water filter net 45 is connected to the top of the inner wall of the connecting filter tube 41, and the top of the elastic filter net is connected to the top of the inner wall of the connecting filter tube 41, the top of the regulating control motor 43 is installed in the control motor installation groove 315, the bottom of the regulating control motor 43 is connected to the middle of the top surface of the valve body 42, the regulating air inlet hole 422 is connected to the outer end of the connecting filter tube 41, and the bottom surface of the regulating disk 431 is against the top surface of the regulating tube 423, and the connecting exhaust pipe 425 is connected to the regulating exhaust hole 420 to discharge air. The inner end of the connecting pipe 441 is installed on the outer end of the adjusting exhaust hole 420, the outer wall of the sliding shaft mounting tube 444 is installed in a plurality of connecting mounting columns 445, the middle of the adjusting sliding shaft 442 is slidably installed in the sliding shaft mounting tube 444, the middle of the adjusting closing disk 443 is installed on the inner end of the sliding shaft mounting tube 444, and the inner side of the adjusting closing disk 443 is abutted against the outer end of the connecting exhaust pipe 425, the bottom of the suction shell 511 is installed on the side of the pump body mounting platform 314 adjacent to the suction hole 311, and the outer side of the suction shell 511 is connected to the outer end of the exhaust connecting pipe 441, the bottom of the exhaust shell 513 is installed on the other end of the pump body mounting platform 314, and the top end of the driving exhaust pipe 516 is connected to the bottom end of the exhaust pipe 317, and the pressurizing outer cylinder 51 The two sides are respectively connected to the inner sides of the suction housing 511 and the exhaust housing 513, the driving seat 521 is installed at the middle of the outer side of the exhaust housing 513, the connecting boost ring 525 is rotatably installed in the rotating installation hole 515, the two ends of the driving shaft 522 are respectively installed at the driving seat 521 and the middle of the boost disk 524, and the outer end of the driving shaft 522 is connected to the suction driving motor, a plurality of boost fans 523 are installed in the driving shaft 522 at intervals along the length direction, the outer walls of a plurality of fixed boost rings 531 are respectively installed in the boost cavity 54 at intervals along the length direction, and the plurality of fixed boost rings 531 are respectively arranged alternately with the plurality of boost fans 523, and the output boost ring 532 is installed on the inner side of the suction housing 511.

[0049] The present invention can achieve:

[0050] 1. The present invention can utilize the filter regulating valve 40 and the regulating suction pump 50 to perform continuous rapid pressurization suction for multiple stages, thereby applying a controllable negative pressure to the wound surface to promote drainage of the wound surface, reduce accumulation of exudate, and contribute to wound healing and recovery. The negative pressure can also be accurately adjusted according to actual conditions to ensure effective treatment and management of wound surface needs.

[0051] 2. The present invention can utilize the drainage assembly 20 for split-tube suction. When one of the tubes is blocked, the other tube can still maintain drainage, thereby reducing the impact of the blockage on the treatment effect and ensuring smooth drainage.

[0052] The above-described embodiments only express several embodiments of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A portable wound negative pressure drainage device with self-regulating control, characterized in that: The invention comprises a sponge dressing (10), a drainage assembly (20), a suction housing (30), a filter regulating valve (40) and a regulating suction pump (50), wherein the bottom surface of the sponge dressing (10) is applied to the wound surface of the patient, an inclined mounting surface (11) is recessed on one side of the top surface of the sponge dressing (10), a first drainage mounting hole (12) is recessed on the inclined mounting surface (11), a second drainage mounting hole (13) is recessed in the middle of the first drainage mounting hole (12), and the drainage assembly (20) is mounted on the first drainage mounting hole (12). ) and the second drainage installation hole (13), the top of the suction housing (30) is hollow to form an installation cavity (31), a suction hole (311) is recessed on one side of the installation cavity (31), a suction installation pipe (312) is arranged in the suction hole (311), a three-way joint (313) is arranged at the outer end of the suction installation pipe (312), the three-way joint (313) is connected to the drainage component (20) through a pipeline, and the filter regulating valve (40) and the regulating suction pump (50) are both installed in the installation cavity (31); A filter connection hole (310) is recessed on one side of the bottom surface of the installation cavity (31) adjacent to the suction hole (311), and a filter connection pipe (319) is protruded from the filter connection hole (310). A pump body mounting platform (314) is protruded from the other side of the bottom surface of the installation cavity (31). A control motor mounting groove (315) is recessed on one side of the top surface of the installation cavity (31) adjacent to the suction hole (311). An air outlet hole (316) is recessed on the other side of the top surface of the installation cavity (31), and an air outlet pipe (317) is arranged in the air outlet hole (316). A control panel (32) is arranged on the top surface of the suction housing (30), and a bottom surface of the suction housing (30) adjacent to the suction hole (311) is provided. A collecting installation cavity (33) is recessed on one side, a thread groove (331) is recessed on the outer edge of the top surface of the collecting installation cavity (33), a collecting bottle (332) is disposed in the collecting installation cavity (33), and the top of the collecting bottle (332) is threadedly connected to the thread groove (331), the inner cavity of the collecting bottle (332) is connected to the filter connection hole (310), and indicator grooves (333) are recessed on both ends of the collecting installation cavity (33) for observing the collection situation in the collecting bottle (332), and a battery installation cavity (34) is formed in the hollow at one side of the bottom of the suction housing (30) away from the suction hole (311), and a storage battery (35) is disposed in the battery installation cavity (34); The filter regulating valve (40) comprises a connecting filter tube (41), a semicircular filter net (45), a valve body (42), a regulating control motor (43) and an air outlet regulating element (44); the outer end of the connecting filter tube (41) is connected to the inner end of the suction installation tube (312); a discharge pipe (411) is protrudingly provided at the middle of the bottom surface of the connecting filter tube (41); the bottom end of the discharge pipe (411) is connected to the top of the filter connecting tube (319); a filter installation ring (412) is protrudingly provided at the bottom of the inner wall of the discharge pipe (411); the bottom of the semicircular filter net (45) is installed at one end of the filter installation ring (412) away from the filter connecting hole (310); the top of the semicircular filter net (45) is connected to the connecting tube (319); The top of the inner wall of the connecting filter tube (41) is connected, a semicircular filter plate (451) is convexly provided at the bottom of the outer side of the semicircular filter screen (45), an elastic impurity filter screen is convexly provided at the outer end of the top surface of the semicircular filter plate (451), the top of the elastic impurity filter screen is connected to the top of the inner wall of the connecting filter tube (41), the outer end of the valve body (42) is installed on the inner end of the connecting filter tube (41), the top of the regulating control motor (43) is installed in the control motor installation groove (315), the bottom of the regulating control motor (43) is connected to the middle of the top surface of the valve body (42), the bottom of the output shaft of the regulating control motor (43) is convexly provided with an adjusting disk (431), and the inner end of the air outlet regulating element (44) is connected to the outer end of the valve body (42); The adjustable suction pump (50) comprises a mounting shell element (51), a driving element (52), a fixed boosting element (53) and a suction driving motor. The mounting shell element (51) is mounted in a pump body mounting platform (314). The mounting shell element (51) is hollow inside to form a boosting cavity (54). The driving element (52) and the fixed boosting element (53) are both mounted in the boosting cavity (54). The suction driving motor is mounted on a side of the mounting cavity (31) away from the suction hole (311), and the suction driving motor is connected to the driving element (52).

2. The portable wound negative pressure drainage device with self-regulating control according to claim 1, characterized in that: The drainage assembly (20) comprises a drainage tube (21), a connecting cover (22) and a mounting cover (23); the drainage tube (21) is arranged in the second drainage mounting hole (13); a plurality of drainage holes (211) are concavely arranged in a circumferential array at the bottom of the outer wall of the drainage tube (21); a liquid separation drainage tube (212) is convexly arranged in the middle of the bottom surface of the drainage tube (21); the bottom surface of the connecting cover (22) is clamped and mounted on the top surface of the first drainage mounting hole (12); a main connecting mounting tube (221) is convexly arranged in the middle of the bottom surface of the connecting cover (22); the bottom of the main connecting mounting tube (221) is connected to the top of the drainage tube (21); a connecting mounting ring (220) is convexly arranged on the top of the outer wall of the connecting cover (22); a liquid separation connecting tube (222) is convexly arranged in the middle of the bottom surface of the connecting cover (22); and the liquid separation connecting tube (222) is arranged in the inner cavity of the main connecting mounting tube (221); the bottom of the liquid separation connecting tube (222) is connected to the liquid separation drainage tube (21). The top of the flow pipe (212) is connected, an inclined thin connection pipe (223) is convexly provided on the top surface of the connection cover (22), and the internal cavity of the inclined thin connection pipe (223) is communicated with the internal cavity of the liquid separation connection pipe (222), a first liquid separation hole (224) is concavely provided on the outer edge of the top surface of the main connection installation pipe (221), and a thick liquid separation pipe (225) is provided in the first liquid separation hole (224), a first liquid outlet pipe (231) and a second liquid outlet pipe (232) are respectively concavely provided in the middle of the top surface of the installation cover (23), a clamping ring (233) is convexly provided on the outer edge of the bottom surface of the installation cover (23), the clamping ring (233) is connected to the connection installation ring (220), and the outer wall of the installation cover (23) is clamped and installed on the inner wall of the first drainage installation hole (12), the bottom of the first liquid outlet pipe (231) is connected to the top of the thick liquid separation pipe (225), and the bottom of the second liquid outlet pipe (232) is connected to the inclined thin connection pipe (223).

3. The portable wound negative pressure drainage device with self-regulating control according to claim 2 is characterized in that: The valve body (42) is hollow inside and forms an adjusting cavity (421); an adjusting air inlet hole (422) is recessed at the inner end of the adjusting cavity (421); the adjusting air inlet hole (422) is connected to the inner end of the connecting filter tube (41); an adjusting exhaust hole (420) is recessed at the outer end of the adjusting cavity (421); an adjusting tube (423) is protrudingly provided at the middle of the bottom surface of the adjusting cavity (421); the bottom surface of the adjusting disk (431) is abutted against the top surface of the adjusting tube (423); a plurality of inclined guide plates (424) are protrudingly provided along the circumferential direction at the outer edge of the bottom surface of the adjusting cavity (421); a connecting exhaust hole (426) is recessed at the outer side of the adjusting tube (423); a connecting exhaust pipe (425) is protruding from the connecting exhaust hole (426); and the connecting exhaust pipe (425) is arranged at the inner end of the adjusting exhaust hole (420).

4. The portable wound negative pressure drainage device with self-regulating control according to claim 3 is characterized in that: The air outlet regulating element (44) comprises an air outlet connecting pipe (441), a sliding shaft mounting pipe (444), an regulating sliding shaft (442) and an regulating closing disk (443); the inner end of the air outlet connecting pipe (441) is mounted on the outer end of the regulating exhaust hole (420); a plurality of connecting and mounting columns (445) are protrudingly provided in the middle of the inner wall of the air outlet connecting pipe (441) along the circumferential direction; the outer wall of the sliding shaft mounting pipe (444) is mounted in the plurality of connecting and mounting columns (445); the middle of the regulating sliding shaft (442) is slidably mounted in the sliding shaft mounting pipe (444); the middle of the regulating closing disk (443) is mounted on the inner end of the sliding shaft mounting pipe (444); a compression spring is arranged between the outer side of the regulating closing disk (443) and the inner end of the sliding shaft mounting pipe (444); and the inner side of the regulating closing disk (443) is abutted against the outer end of the connecting exhaust pipe (425).

5. The portable wound negative pressure drainage device with self-regulating control according to claim 4 is characterized in that: The mounting housing element (51) comprises a suction housing (511), a pressurizing outer cylinder (512) and an exhaust housing (513); the bottom of the suction housing (511) is mounted on a side of the pump body mounting platform (314) adjacent to the suction hole (311), and the outer side of the suction housing (511) is connected to the outer end of the air outlet connecting pipe (441); a suction hole (514) is recessed in the middle of the suction housing (511); a rotation mounting hole (515) is recessed on the inner side of the inner wall of the suction hole (514); and the bottom of the exhaust housing (513) is mounted on the pump At the other end of the body mounting platform (314), a driving exhaust pipe (516) is protruding from the top of the exhaust shell (513), and the top end of the driving exhaust pipe (516) is connected to the bottom end of the exhaust pipe (317). A driving cone pipe (518) is arranged in the middle of the exhaust shell (513), and the driving cone pipe (518) is arranged opposite to the air intake hole (514). The two sides of the boost outer cylinder (512) are respectively connected to the suction shell (511) and the inner side of the exhaust shell (513), and the boost cavity (54) is formed in the boost outer cylinder (512).

6. The portable wound negative pressure drainage device with self-regulating control according to claim 5, characterized in that: The driving element (52) comprises a driving seat (521), a boosting disc (524), a driving shaft (522) and a plurality of boosting fans (523); the driving seat (521) is mounted on the middle part of the outer side of the exhaust housing (513); a connecting boosting ring (525) is convexly provided on the middle part of the outer side of the boosting disc (524); the connecting boosting ring (525) is rotatably mounted in the rotating mounting hole (515); a plurality of boosting spiral grooves (526) are concavely provided on the outer wall of the boosting disc (524) along the circumferential direction; the boosting spiral grooves (526) enable the suction hole (514) to communicate with the boosting cavity (54); the two ends of the driving shaft (522) are respectively mounted on the driving seat (521) and the middle part of the boosting disc (524); the outer end of the driving shaft (522) is connected to a suction driving motor; and the plurality of boosting fans (523) are installed in the driving shaft (522) at intervals along the length direction.

7. The portable wound negative pressure drainage device with self-regulating control according to claim 6, characterized in that: The fixed boost element (53) comprises a plurality of fixed boost rings (531) and an output boost ring (532); the outer walls of the plurality of fixed boost rings (531) are respectively installed in the boost cavity (54) at intervals along the length direction, and the plurality of fixed boost rings (531) are respectively arranged alternately with the plurality of boost fans (523); the output boost ring (532) is installed on the inner side of the suction shell (511), and the side walls of the plurality of fixed boost rings (531) and the output boost ring (532) are both provided with spiral boost through grooves (530).

Images