CN204655770U - The Novel negative-pressure drainage system of wound surface pressure size can be monitored in real time - Google Patents

Abstract

The utility model discloses a novel negative pressure drainage system which can effectively protect the wound surface, avoid excessive pressure at the wound location, and speed up wound healing, and can monitor the pressure of the wound surface in real time. It includes medical dressing, waste liquid bottle, vacuum pump, A guide Flow tube and A air guide tube, the medical dressing is attached to the wound surface of the patient, the A guide tube is connected between the medical dressing and the waste liquid bottle, and the A air guide tube is connected between the waste liquid bottle and the vacuum pump Between them, a pressure sensor and a B airway tube are also included. One end of the B airway tube is connected to the medical dressing, and the other end is connected to the pressure sensor to monitor the negative pressure of the patient's wound site in real time.

Description

A new negative pressure drainage system that can monitor the pressure of the wound in real time

technical field

The utility model relates to a negative pressure drainage system, in particular to a novel negative pressure drainage system which can effectively protect the wound surface, avoid excessive pressure at the wound location, and accelerate wound healing and can monitor the pressure of the wound surface in real time.

Background technique

In recent years, with the rapid development of the social economy and the acceleration of the aging process of the society, various acute and chronic skin wounds that are difficult to heal, such as diabetic foot ulcers, deep pressure ulcers, and post-traumatic wounds, have also increased. Wounds that leak a lot of fluid and need to be drained often appear after surgery. Accumulation of blood, pus, interstitial fluid or secretions occurs at the lesion or wound. If these liquids are not removed in time, it will affect the healing of the wound, and even worsen the wound in severe cases. The effective solution is to use The negative pressure drainage technology guides and discharges these fluids, that is, during the operation, the negative pressure drainage tube is inserted into the wound site, and the effusion is drained out by using the negative pressure drainage tube.

Under normal circumstances, the tissues or organs at the wound site are relatively fragile. If the negative pressure is too large, it will cause damage to the tissue or organs at the wound site. If the pressure is too low, the best drainage effect cannot be achieved. Currently, the negative pressure is controlled. The best way is to adjust the output power of the negative pressure pump. Since the actual negative pressure at the wound site is related to the length of the catheter, the diameter of the drainage hole, the number of drainage holes and the concentration of the effusion, the negative pressure of the negative pressure pump There is a certain error between the output power and the actual negative pressure at the wound site, which makes it impossible to accurately control the actual negative pressure at the wound site. Therefore, in the existing negative pressure drainage technology, the negative pressure state at the wound site is not truly reflected. On the other hand, at different stages of wound healing, the required negative pressure may be different, and it may be necessary to increase or decrease the negative pressure of the wound. Existing negative pressure drainage products are mainly processed by adjusting the negative pressure value at the position of the negative pressure source. In the state of good air tightness, after the negative pressure value at the position of the negative pressure source is lowered, the negative pressure at the wound surface will be reduced. The pressure value has not really dropped, so the negative pressure state of real-time online adjustment of the wound position cannot be truly realized. If the negative pressure value is adjusted by directly opening the pressure release at the negative pressure source, the airflow will return through the original negative pressure pipeline, and there is a risk of retrograde infection.

Utility model content

In view of the above deficiencies, the utility model provides a new type of negative pressure drainage system which can effectively protect the wound surface, avoid excessive pressure at the wound location, and accelerate wound healing, and can monitor the pressure of the wound surface in real time. It includes medical dressings, waste liquid bottles , vacuum pump, A guide tube and A air guide tube, the medical dressing is attached to the wound surface of the patient, the A guide tube is connected between the medical dressing and the waste liquid bottle, and the A air guide tube is connected to the Between the waste liquid bottle and the vacuum pump, a pressure sensor and a B airway tube are also included. One end of the B airway tube is connected to the medical dressing, and the other end is connected to the pressure sensor to monitor the negative pressure of the patient's wound in real time. .

In order to further realize the present invention, the outer wall of the waste liquid bottle is provided with an A liquid level sensor for real-time monitoring of the liquid level of the waste liquid in the waste liquid bottle.

In order to further realize the present invention, the outer wall of the waste liquid bottle is provided with a turbidity sensor for real-time monitoring of the turbidity of the waste liquid in the waste liquid bottle.

In order to further realize the present invention, it also includes a D airway tube, an E control valve and a filter tip, the E control valve is arranged on the D airway tube, one end of the D airway tube is connected to the medical dressing, and the D airway tube The other end of the trachea is connected to the filter.

In order to further realize the present invention, it also includes a C airway tube and a bacterial filter, the C airway tube is connected between the medical dressing and the bacterial filter, and the D airway tube is connected between the bacterial filter and the filter tip.

In order to further realize the present invention, it also includes an infusion bottle and a C guide tube connected between the infusion bottle and the medical dressing.

In order to further realize the present invention, the outer wall of the infusion bottle is also provided with a B liquid level sensor for monitoring the liquid level in the infusion bottle.

In order to further realize the present invention, it also includes a B guiding tube, a peristaltic pump, a C guiding tube and an infusion bottle, the B guiding tube is connected between the peristaltic pump and the medical dressing, and the C guiding tube is connected to the peristaltic pump between the infusion bottle.

In order to further realize the present invention, an A control valve is also arranged on the A guide pipe.

In order to further realize the present invention, it also includes B guide tube, peristaltic pump, C guide tube, infusion bottle, E guide tube, A control valve, B control valve and F control valve, and the B guide tube is connected to the peristaltic Between the pump and the medical dressing, the C guide tube is connected between the peristaltic pump and the infusion bottle, the E guide tube is connected between the C guide tube and the A guide tube, and the A control valve is set in the A guide tube. On the flow tube, and the connection point between the E guide tube and the A guide tube is located between the A control valve and the medical dressing, the B control valve is set on the C guide tube, and the E guide tube and the C guide tube The connection point of the tube is located between the B control valve and the peristaltic pump, and the F control valve is set above the E guide tube.

The beneficial effects of the utility model:

1. The negative pressure drainage system of the utility model is equipped with a pressure monitoring system, which monitors the actual pressure of the wound position in real time through the pressure sensor, and sends the monitored actual pressure to the host, so that the host can effectively control the negative pressure of the wound position , not only can avoid excessive pressure at the wound site and damage the patient's tissue, but also can reasonably select the negative pressure at the wound site according to different healing stages to speed up the patient's recovery; the utility model can also effectively monitor whether the drainage system is Blockage or air leakage occurs. When the data monitored by the pressure sensor cannot reach the specified negative pressure value for a long time, when the host is suspended, if the negative pressure value cannot be maintained stably, the system will leak; if the negative pressure value is still maintained but less than the specified negative pressure value, the system is clogged, and the negative pressure tube needs to be replaced or flushed.

2. The negative pressure drainage system of the present utility model can be freely switched between continuous negative pressure mode, intermittent negative pressure mode, full-speed flushing mode, controllable flushing mode, single infusion mode and circulation mode through the switch control of the control valve, which is convenient Select the appropriate working mode according to the recovery stage or treatment period of the patient, which is more versatile and more convenient for the patient's recovery.

3. When the negative pressure drainage system of the present utility model is in the continuous negative pressure mode, the target pressure value of the wound position can be set by the host computer, and the actual pressure of the wound position can be monitored in real time by the pressure sensor. When the actual pressure and the target pressure value When there is a difference between them, use the host to change the output power of the vacuum pump to adjust the actual pressure at the wound site, so as to ensure that the actual pressure is consistent with the target pressure.

4. The negative pressure drainage system of the present utility model is in the intermittent negative pressure mode. By using the alternate change of air pressure, intermittent negative pressure is formed at the wound site, so as to regularly physically stimulate the newborn tissue at the wound site, thereby playing a physical role. Healing effect.

5. The negative pressure drainage system of the utility model is in the full-speed flushing mode, and the infusion channel formed by the infusion bottle, the C diversion tube and the D diversion tube can realize the cleaning and disinfection treatment of the wound surface, so that the waste liquid can be sucked under the negative pressure At the same time, it can also clean the wound site to help the wound site recover faster, avoiding the need to unpack the patient's wound site, and use other tools to clean the wound site, which greatly reduces the pain of the patient.

6. The negative pressure drainage system of the present utility model is in the controllable flushing mode, and the infusion speed of the infusion bottle can be effectively controlled by the peristaltic pump, so as to perform moderate cleaning operations according to the recovery status of the wound site (different recovery stages, need cleaning different speeds), saving costs and reducing waste.

7. The negative pressure drainage system of the utility model is in the single infusion mode, and the infusion channel formed by the infusion bottle, the C diversion tube and the B diversion tube can realize the cleaning and disinfection of the wound surface, and the host computer can also be used to control the operation of the peristaltic pump. Output power, so as to effectively control the infusion speed of the infusion bottle (the cleaning speed of the wound surface).

8. The negative pressure drainage system of the present utility model is in the circulation mode, and the peristaltic pump is used to realize the circulating flow of the nutrient solution (medicine solution) at the wound surface, so as to continuously stimulate the wound surface and generate continuous fluid shear force at the wound surface, so as to Accelerate the absorption of nutrients (drugs) at the wound site to accelerate the healing of the wound site.

Description of drawings

Fig. 1 is a schematic diagram of the utility model in continuous negative pressure mode.

Fig. 2 is a schematic diagram of the utility model in the intermittent negative pressure mode;

Fig. 3 is a schematic diagram of the utility model in a full-speed flushing mode;

Fig. 4 is a schematic diagram of the utility model in a controllable flushing mode;

Fig. 5 is a schematic diagram of the utility model in a single infusion mode;

Fig. 6 is a schematic diagram of the utility model in circulation mode.

Detailed ways

The utility model is further elaborated below in conjunction with the accompanying drawings, wherein, the direction of the utility model is based on Fig. 1 .

As shown in Figures 1 to 6, the novel negative pressure drainage system of the present invention, which can monitor the pressure of the wound surface in real time, includes a medical dressing 1, a drainage system 2, a cleaning system 3, a pressure monitoring system 4, and a pressure balance system 5. 1 is used to attach to the patient's wound site; the drainage system 2 is used to guide out the accumulated blood and fluid in the patient's wound site; the cleaning system 3 is used to disinfect and clean the patient's wound site; the pressure monitoring system 4 is used for The actual pressure at the wound site of the patient is monitored in real time; the pressure balance system 5 is used to balance the pressure at the wound site of the patient to avoid excessive pressure at the wound site.

Medical dressing 1 can be porous sponge dressing, or it can be a combined dressing composed of porous sponge dressing and isolation pad. The isolation pad dressing is generally made of vaseline gauze, or a loose porous isolation pad made of hydrophilic and water-absorbing gel film by punching holes. , the isolation pad has good biocompatibility, the surface is hydrophilic, soft, smooth, nanoporous, and can be used as a drug carrier.

Drainage system 2 includes A guide tube 21, A control valve 22, waste liquid bottle 23, A air guide tube 24, vacuum pump 25, A liquid level sensor 26 and turbidity sensor 27, and one end of A guide tube 21 passes through the medical dressing 1 and extend into the wound surface, the other end of the A guide tube 21 is connected to the waste liquid bottle 23, so as to guide the waste liquid at the wound surface into the waste liquid bottle 23; the A control valve 22 is arranged on the A guide tube 21 , to control the waste liquid into the waste liquid bottle 23; the waste liquid bottle 23 is used to collect the waste liquid in the position of the wound surface to facilitate regular cleaning; the A air guide tube 24 is connected between the waste liquid bottle 23 and the vacuum pump 25; the vacuum pump 25 is used A negative pressure is formed in the waste liquid bottle 23, thereby using negative pressure suction to attract the waste liquid at the wound surface into the waste liquid bottle 23; A liquid level sensor 26 is installed on the outer wall of the waste liquid bottle 23 to monitor the waste liquid in real time. The collection amount of the waste liquid in the liquid bottle 23, when the waste liquid in the waste liquid bottle 23 is about to fill up, the A liquid level sensor 26 is triggered, and the A liquid level sensor 26 sends the message of "the waste liquid bottle is full" to the host computer. control signal to inform the medical personnel to replace the waste liquid bottle 23, or to pour out the waste liquid in the waste liquid bottle 23; Turbidity, the turbidity sensor 27 sends the value of the turbidity monitored in real time to the host computer, and the turbidity value of the waste liquid monitored by the turbidity sensor 27 can judge the recovery of the wound surface. When the value monitored by the turbidity sensor 27 is lower (the waste liquid is clearer), it means that there is less blood and fluid in the wound site, and the recovery of the wound site is good; ), it means that there is still a lot of blood and fluid in the wound site, and the recovery of the wound site is not good, so as to avoid monitoring the recovery degree of the wound site through other tools, the design is more humanized, and the judgment is more accurate.

Cleaning system 3 comprises B guide tube 31, peristaltic pump 32, C guide tube 33, infusion bottle 34, B control valve 35, B liquid level sensor 36, D guide tube 37 and C control valve 38, wherein, B guide One end of the flow tube 31 passes through the medical dressing 1 and extends to the wound surface, the other end of the B flow guide tube 31 is connected to the output end of the peristaltic pump 32; the peristaltic pump 32 is connected between the B flow guide tube 31 and the C flow guide tube 33 In between, the speed of the infusion is controlled by the peristaltic pump 32; one end of the C guide tube 33 is connected to the input end of the peristaltic pump 32, and the other end of the C guide tube 33 is connected to the infusion bottle 34; the infusion bottle 34 is used for storage and cleaning liquid or disinfectant; the B control valve 35 is arranged on the C guide tube 33 for controlling the infusion state and the infusion speed of the C guide tube 33; the B liquid level sensor 36 is installed on the outer wall of the infusion bottle 34 to monitor the infusion in real time The cleaning solution in the bottle 34 or the remaining amount of disinfectant, when the cleaning solution in the infusion bottle 34 or the disinfectant is about to be lost, the B liquid level sensor 36 is triggered, and the B liquid level sensor 36 sends "infusion bottle input" to the host computer. "End" control signal to inform the medical personnel to replace the infusion bottle 34, or refill the infusion bottle 34 with cleaning solution or disinfectant; the two ends of the D guide tube 37 are respectively connected to the B guide tube 31 and the C guide tube 33 , when the peristaltic pump 32 is not working, the automatic infusion is realized; the C control valve 38 is arranged on the D guide tube 37 to realize the infusion state and the infusion speed of the D guide tube 37 .

The pressure monitoring system 4 includes a B airway 41, a pressure sensor 42 and a D control valve 43. One end of the B airway 41 is located on the side of the medical dressing 1 facing the wound, and the other end is connected to the pressure sensor 42; the pressure sensor 42 is used for Monitor the actual pressure at the wound site in real time, and send the monitored actual pressure to the host, so that the host can effectively control the negative pressure at the wound site, avoid excessive pressure at the wound site and damage the patient's tissue, and effectively monitor Whether the drainage system 2 is blocked (when the system works stably in a certain state, when the data monitored by the pressure sensor 42 fluctuates greatly, it indicates that the drainage system 2 is blocked and needs to be cleaned); the D control valve 43 is set in the B above the air duct 41 to control the working state of the pressure sensor 42 .

The pressure balance system 5 includes a C airway tube 51, a bacterial filter 52, a D airway tube 53, a filter tip 54 and an E control valve 55. One end of the C airway tube 51 is located on the side of the medical dressing 1 facing the wound surface, and the other end communicates with To the bacterial filter 52; the bacterial filter 52 is used to filter the air entering the wound site to avoid tissue bacterial infection at the wound site; one end of the D airway 53 is connected to the bacterial filter 52, and the other end is connected to the filter tip 54 ; The filter tip 54 is used to filter the larger particles in the air entering the wound site to avoid tissue pollution at the wound site; the E control valve 55 is arranged on the D air duct 53 for controlling the D air duct 53 (pressure balance system 5) Working status.

When the wound is in a good recovery state, the wound can be continuously stimulated, so as to generate continuous fluid shear force on the wound, so as to achieve the purpose of physically promoting healing and speeding up surgical healing. The utility model can also add a circulation mode , that is, add an E guide tube 61 between the C guide tube 33 and the A guide tube 21, set an F control valve 62 on the E guide tube 61, and one end of the E guide tube 61 is located at the C guide tube 33 corresponds to between the peristaltic pump 32 and the B control valve 35 , and its other end is located between the A guide tube 21 corresponding to the medical dressing 1 and the A control valve 22 .

Among them, the peristaltic pump, vacuum pump and all control valves of the utility model are controlled systematically through the host, all pressure sensors, liquid level sensors and turbidity sensors are electrically connected with the host, and all pressure sensors, liquid level sensors and turbidity sensors Send the monitored signal to the host for judgment by the host.

As shown in Figure 1, the utility model is in continuous negative pressure mode, wherein, A control valve 22 and D control valve 43 are in an open state, B control valve 35, C control valve 38, E control valve 55 and F control valve 62 Both are in the off state, the vacuum pump 25 and the pressure sensor 42 are in the working state, and the peristaltic pump 32 is in the non-working state. The utility model uses the host computer to set the target pressure value of the wound surface, and uses the pressure sensor 42 to monitor the actual pressure of the wound surface in real time. When there is a difference between the actual pressure and the target pressure value, the host computer is used to change the output power of the vacuum pump 25 , to adjust the actual pressure at the wound site, so as to ensure that the actual pressure is consistent with the target pressure value. In this way, while the waste liquid is discharged under negative pressure, the actual pressure at the wound site can be controlled more precisely, so as to avoid excessive pressure at the wound site from damaging the patient's tissue, and at the same time, it can also effectively monitor whether the drainage system 2 is blocked (this When the system works stably in a certain state, when the data monitored by the pressure sensor 42 fluctuates greatly, it indicates that the drainage system 2 is blocked and needs to be cleaned).

As shown in Figure 2, the utility model is in intermittent negative pressure mode, wherein, A control valve 22 and D control valve 43 are in open state, B control valve 35, C control valve 38 and F control valve 62 are in closed state, The E control valve 55 is in the alternate state of opening and closing, and the negative pressure state and the pressure relief state are formed by using the change of the working state of the E control valve 55. The vacuum pump 25 and the pressure sensor 42 are in the working state, and the peristaltic pump 32 is in the non-working state. In the initial state, the E control valve 55 is in the closed state. The target pressure value and the time interval value of the wound surface are set through the host computer, and the actual pressure of the wound surface is monitored in real time by the pressure sensor 42. When the actual pressure is greater than the target pressure value When there is a difference between them, use the main engine to change the output power of the vacuum pump 25 to adjust the actual pressure of the wound position, so as to ensure that the actual pressure is consistent with the target pressure value, and at this time it is in a negative pressure state; when the duration of the negative pressure state reaches the time During interval value, E control valve 55 changes working state (becomes open state), utilizes filter tip 54 to unload the pressure of wound surface position this moment, becomes pressure relief state this moment; When the duration of pressure relief state reaches time interval value At this time, the E control valve 55 changes its working state (turns into a closed state), and at this time it becomes a negative pressure state again, so that it goes round and round to achieve the purpose of intermittent negative pressure. In this way, by using the alternating change of air pressure, intermittent negative pressure is formed at the wound surface to regularly physically stimulate the new tissue at the wound surface, thus playing the role of physically promoting healing.

As shown in Figure 3, the utility model is in the full-speed flushing mode, wherein, the A control valve 22, the B control valve 35, the C control valve 38 and the D control valve 43 are in an open state, and the E control valve 55 and the F control valve 62 are both In the closed state, the vacuum pump 25 and the pressure sensor 42 are in the working state, and the peristaltic pump 32 is in the non-working state. The utility model can clean and disinfect the wound surface through the infusion channel formed by the infusion bottle 34, the C diversion tube 33 and the D diversion tube 37. In addition, the host computer is used to set the target pressure value of the wound surface, and the pressure sensor is used to 42 Real-time monitoring of the actual pressure at the wound site, when there is a difference between the actual pressure and the target pressure value, use the host to change the output power of the vacuum pump 25 to adjust the actual pressure at the wound site, thereby ensuring that the actual pressure is consistent with the target pressure The values are consistent. In this way, while the waste liquid is sucked by negative pressure, the wound can also be cleaned, helping the wound to recover faster, avoiding the need to unpack the patient’s wound, and using other tools to clean the wound, which greatly improves Reduced patient pain.

As shown in Figure 4, the utility model is in the controllable flushing mode, wherein, A control valve 22, B control valve 35 and D control valve 43 are in an open state, C control valve 38, E control valve 55 and F control valve 62 All are in the closed state, and the vacuum pump 25, the peristaltic pump 32 and the pressure sensor 42 are in the working state. The utility model uses the main engine to control the output power of the peristaltic pump 32, thereby effectively controlling the infusion speed of the infusion bottle 34 (the cleaning speed of the wound surface). In addition, the main engine is used to set the target pressure value of the wound surface, and the pressure sensor 42 is used for real-time monitoring. The actual pressure at the wound site, when there is a difference between the actual pressure and the target pressure value, use the host to change the output power of the vacuum pump 25 to adjust the actual pressure at the wound site, so as to ensure that the actual pressure is consistent with the target pressure value. In this way, while the waste liquid is sucked by negative pressure, the wound can also be cleaned, helping the wound to recover faster, avoiding the need to unpack the patient’s wound, and using other tools to clean the wound, which greatly improves The pain of the patient is reduced. In addition, the infusion speed of the infusion bottle 34 can be effectively controlled by the peristaltic pump 32, so as to perform moderate cleaning operations according to the recovery status of the wound site (different recovery stages require different cleaning speeds), which is more economical. cost and reduce waste.

As shown in Figure 5, the utility model is in the single infusion mode, wherein, the B control valve 35 is in the open state, the A control valve 22, the C control valve 38, the D control valve 43, the E control valve 55 and the F control valve 62 are all In the closed state, the peristaltic pump 32 is in the working state, and the vacuum pump 25 and the pressure sensor 42 are in the non-working state. In this way, the utility model can clean and disinfect the wound surface through the infusion channel formed by the infusion bottle 34, the C guide tube 33 and the B guide tube 31, and can also use the host computer to control the output power of the peristaltic pump 32, thereby effectively controlling The infusion speed of the infusion bottle 34 (the cleaning speed of the wound surface position).

As shown in Figure 6, the utility model is in the circulation mode, wherein, the F control valve 62 is in the open state, the A control valve 22, the B control valve 35, the C control valve 38, the D control valve 43 and the E control valve 55 are all in the In the closed state, the peristaltic pump 32, the vacuum pump 25 and the pressure sensor 42 are in a non-working state. In this way, the peristaltic pump 32 is used to realize the circulating flow of waste liquid at the wound site, thereby continuously stimulating the wound site, generating continuous fluid shear force at the wound site, to accelerate the absorption of nutrients (medicine) at the wound site, and to accelerate the healing of the wound site. heal.

The above description is only a preferred embodiment of the present invention, the present invention is not limited to the above embodiment, there may be local minor structural changes during the implementation process, if the various changes or modifications of the present invention do not depart from the spirit of the present invention and scope, and belong to the claims and equivalent technical scope of the present invention, the present invention also intends to include these changes and modifications.

Claims (10)

1. A novel negative pressure drainage system that can monitor the pressure of the wound in real time, it comprises a medical dressing, a waste liquid bottle, a vacuum pump, an A guide tube and an A air guide tube, and the medical dressing is attached to the patient's wound position, so The A guide tube is connected between the medical dressing and the waste liquid bottle, the A air guide tube is connected between the waste liquid bottle and the vacuum pump, and it is characterized in that it also includes a pressure sensor and a B air guide tube, and the B guide tube One end of the trachea is connected to the medical dressing, and the other end is connected to the pressure sensor, so as to monitor the negative pressure at the patient's wound site in real time. 2. The novel negative pressure drainage system capable of real-time monitoring of wound surface pressure according to claim 1, wherein the outer wall of the waste liquid bottle is provided with an A for real-time monitoring of the liquid level of the waste liquid in the waste liquid bottle. liquid level sensor. 3. The novel negative pressure drainage system capable of real-time monitoring of wound surface pressure according to claim 1, wherein the outer wall of the waste liquid bottle is provided with a turbidity indicator for real-time monitoring of the turbidity of the waste liquid in the waste liquid bottle. degree sensor. 4. The novel negative pressure drainage system capable of real-time monitoring of the wound pressure according to claim 1, further comprising a D airway, an E control valve and a filter, the E control valve is set on the D guide Above the trachea, one end of the D airway tube is connected to the medical dressing, and the other end of the D airway tube is connected to a filter. 5. The novel negative pressure drainage system capable of real-time monitoring of wound pressure according to claim 1, further comprising a C airway tube and a bacterial filter, and the C airway tube is connected between the medical dressing and the bacterial filter Between, the D airway is connected between the bacterial filter and the filter tip. 6. The novel negative pressure drainage system capable of real-time monitoring of wound pressure according to claim 1, further comprising an infusion bottle and a C-drainage tube connected between the infusion bottle and the medical dressing. 7. The novel negative pressure drainage system capable of real-time monitoring of wound pressure according to claim 6, wherein the outer wall of the infusion bottle is also provided with a B liquid level sensor for monitoring the liquid level in the infusion bottle. 8. The novel negative pressure drainage system capable of real-time monitoring of wound surface pressure according to claim 1, characterized in that it also comprises a B guiding tube, a peristaltic pump, a C guiding tube and an infusion bottle, and the B guiding tube It is connected between the peristaltic pump and the medical dressing, and the C guide tube is connected between the peristaltic pump and the infusion bottle. 9. The novel negative pressure drainage system capable of real-time monitoring of the wound pressure according to claim 8, characterized in that, the A control valve is also arranged on the A drainage tube. 10. The novel negative pressure drainage system capable of real-time monitoring of the wound surface pressure according to claim 1, characterized in that it also includes B diversion tube, peristaltic pump, C diversion tube, infusion bottle, E diversion tube, A Control valve, B control valve and F control valve, the B guide tube is connected between the peristaltic pump and the medical dressing, the C guide tube is connected between the peristaltic pump and the infusion bottle, and the E guide tube is connected Between the C guide tube and the A guide tube, the A control valve is set on the A guide tube, and the connection point between the E guide tube and the A guide tube is located between the A control valve and the medical dressing, and the B The control valve is arranged on the C guide tube, and the connection point between the E guide tube and the C guide tube is located between the B control valve and the peristaltic pump, and the F control valve is arranged on the E guide tube.