CN214074497U

CN214074497U - Wound cleaning system

Info

Publication number: CN214074497U
Application number: CN202022638542.5U
Authority: CN
Inventors: 肖湘忠
Original assignee: Wuhan Shengda Kangcheng Medical Technology Co ltd
Current assignee: Wuhan Shengda Kangcheng Medical Technology Co ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-08-31
Anticipated expiration: 2030-11-13

Abstract

The application discloses wound cleaning system includes: the cleaning handle is provided with an outer pipe and an inner pipe, a liquid channel is formed in the inner cavity of the inner pipe, and a gas channel is formed in a cavity between the inner pipe and the outer pipe; the outlet end of the cleaning handle is provided with a nozzle which is in fluid connection with the liquid channel; the liquid supply unit is communicated with the liquid channel and used for conveying cleaning liquid to the liquid channel at a preset flow rate so as to enable the cleaning liquid to be sprayed out through the nozzle; and the gas supply unit is communicated with the gas channel and used for conveying gas to the gas channel at preset pressure so as to atomize the sprayed cleaning liquid. The cleaning system adopts a mode of combining liquid and gas, and uses atomized liquid drops to clean the wound, so that the cleaning is softer, the pain of a patient is relieved, and the using amount of cleaning liquid is reduced; and the flow velocity and the size of the liquid drops can be adjusted by adjusting the liquid flow and the gas pressure, so that the controllable adjustment of the cleaning force is realized.

Description

Wound cleaning system

Technical Field

The present application relates generally to the technical field of medical devices, and in particular, to a wound irrigation system.

Background

The wound washing or cleaning is a key link of wound treatment, and the current main wound cleaning means comprises the steps of directly pouring normal saline or other washing liquid or performing with the assistance of cotton balls, brushes, syringes and the like, so that the efficiency is low and the operation is complex. In recent years, special medical instruments for cleaning wounds, including electric pulse irrigators, ultrasonic debridement instruments and the like, have appeared, so that the cleaning efficiency and the operation convenience are greatly improved.

However, the current cleaning device is not suitable for holding the rinsing force during rinsing, which may cause great pain to the patient and even affect the healing of the wound in severe cases. And most cleaning devices have the defect of large liquid consumption, for example, the liquid consumption of the electric pulse flusher is about 500-1000 mL/min, which causes serious waste of resources.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a wound cleansing system with adjustable cleansing force, reduced pain from washing, and saved cleansing fluid.

Preferably, the wound cleansing system comprises:

the cleaning handle is provided with an outer pipe and an inner pipe, a liquid channel is formed in the inner cavity of the inner pipe, and a gas channel is formed in a cavity between the inner pipe and the outer pipe; the outlet end of the cleaning handle is provided with a nozzle which is in fluid connection with the liquid channel;

the liquid supply unit is communicated with the liquid channel and used for conveying cleaning liquid to the liquid channel at a preset flow rate so as to enable the cleaning liquid to be sprayed out through the nozzle; and

and the gas supply unit is communicated with the gas channel and used for conveying gas to the gas channel at preset pressure so as to atomize the sprayed cleaning liquid.

Preferably, the washing handle further comprises:

a nozzle cap having a nozzle cap internal cavity in communication with the gas passage, the nozzle being located in the nozzle cap internal cavity; the nozzle is connected with the outlet end of the inner pipe, the nozzle cap is connected with the outlet end of the outer pipe, and a tapered gap for spraying gas is formed between the nozzle and the nozzle cap.

Preferably, the washing handle further comprises:

the liquid connector is used for being connected with the liquid supply unit and communicated with the inlet end of the inner pipe; and

and the gas joint is used for being connected with the gas supply unit and communicated with the inlet end of the outer pipe.

Preferably, the washing handle further comprises:

detachably connect in the splash guard of nozzle cap, the splash guard is flexible cover, a plurality of trompils have on the splash guard.

Preferably, the liquid supply unit includes:

the cleaning liquid containing device is used for containing cleaning liquid;

a liquid inlet pipeline, one end of which is connected to the cleaning liquid accommodating device and the other end of which is connected to the liquid channel; and

and the liquid pump is arranged on the liquid inlet pipeline and used for conveying the cleaning liquid to the liquid channel at a preset flow rate.

Preferably, the gas supply unit includes:

the air pump comprises an air pump and an air inlet pipeline, wherein one end of the air inlet pipeline is connected to the outlet end of the air pump, and the other end of the air inlet pipeline is connected to the air channel.

Preferably, the wound cleansing system further comprises a control unit including a controller connecting the liquid pump and the air pump for controlling the operation of the liquid pump and the air pump.

Preferably, the air supply unit further comprises a pressure detector, and the pressure detector is arranged on the air inlet pipeline close to the outlet end of the air pump and connected with the controller.

Preferably, the control system further comprises a human-computer interaction interface connected with the controller.

Preferably, the wound cleansing system further comprises a foot switch connected with the controller and used for controlling the liquid pump and the air pump to start and stop.

The beneficial effect of this application:

the cleaning system adopts a mode of combining liquid and gas, and uses atomized liquid drops to clean the wound, so that the cleaning is softer, the pain of a patient is relieved, and the using amount of cleaning liquid is reduced; and the flow velocity and the size of the liquid drops can be adjusted by adjusting the liquid flow and the gas pressure, so that the cleaning force can be controllably adjusted, and different application scenes can be met.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic diagram of a wound cleansing system according to an embodiment of the present disclosure;

FIG. 2 is a perspective view of a handle of a cleaning handle according to an embodiment of the present disclosure;

FIG. 3 is an exploded view of the cleaning handle shown in FIG. 2;

FIG. 4 is a cross-sectional view of the wash handle of FIG. 2 (splash guard not shown);

FIG. 5 is an enlarged view of the portion A of the cleaning handle shown in FIG. 4;

FIG. 6 is a perspective view of a joint connection according to an embodiment of the present application;

FIG. 7 is a cross-sectional view of a joint connection according to an embodiment of the present application;

FIG. 8 is a perspective view of a nozzle holder according to an embodiment of the present disclosure;

fig. 9 is a cross-sectional view of a nozzle holder according to an embodiment of the present disclosure.

Reference numerals: the cleaning handle 1, the outer tube 10, the inlet end 100, the outlet end 101, the inner tube 11, the inlet end 110, the outlet end 111, the liquid passage 121, the gas passage 122, the nozzle 13, the inlet end 130, the outlet end 131, the nozzle cap 14, the nozzle cap inner cavity 140, the inlet end 141, the outlet end 142, the slit 15, the liquid joint 161, the gas joint 162, the joint connector 17, the connector body 170, the first connecting hole 171, the second connecting hole 172, the vent 173, the first connecting portion 174, the liquid passage 175, the vertical section 175a, the horizontal section 175b, the nozzle fixing seat 18, the columnar body 180, the first fixing portion 181, the second fixing portion 182, the third fixing portion 183, the first fixing hole 184, the second fixing hole 185, the through hole 186, the splash guard 19, the open hole 190, the cleaning liquid container 20, the liquid inlet pipe 21, the liquid pump 22, the air pump 30, the air inlet pipe 31, the pressure detector 32, and the human-computer interaction interface 40, a main machine 41, a foot switch 5 and a hanging rack 6.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

It should be noted that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience and simplicity of description only, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting.

It should be noted that in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

It should be noted that unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and include, for example, fixed or removable connections or integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1, a wound cleansing system according to a preferred embodiment of the present application is shown, which includes a cleansing handle 1, a liquid supply unit, and a gas supply unit, wherein the cleansing handle 1 has an outer tube and an inner tube, the inner tube having an inner cavity forming a liquid passage, and the inner tube and the outer tube having a hollow cavity forming a gas passage; the outlet end of the cleaning handle is provided with a nozzle which is in fluid connection with the liquid channel; the liquid supply unit is communicated with the liquid channel and is used for conveying cleaning liquid to the liquid channel at a preset flow rate so as to enable the cleaning liquid to be sprayed out through the nozzle; the gas supply unit is communicated with the gas channel and used for conveying gas to the gas channel at preset pressure so as to atomize the sprayed cleaning liquid. Wherein the inner tube is coaxially disposed with the outer tube.

In the embodiment, the gas flow channel annularly wraps the liquid channel, the cleaning liquid is sprayed out from the nozzle at the center of the high-speed gas flow, the spraying speed of the gas is far higher than that of the cleaning liquid due to light weight and low viscosity, the high-speed gas instantly breaks up the liquid flow and atomizes the liquid flow into small liquid drops, and meanwhile, the gas is sprayed out from the outlet end of the cleaning handle at a higher speed to accelerate the liquid drops. Because the diameter of the sprayed liquid drop is extremely small, even under the condition that the speed of the liquid drop is relatively high, the liquid drop impacts the surface of the wound to form high pressure only in a microscopic range, and a human body can not feel very high pressure actually, so that a good flushing effect can be achieved, obvious pain is avoided, and the pain of a patient is relieved. And the use amount of the cleaning liquid is obviously reduced by atomizing the cleaning liquid into liquid drops.

In the present embodiment, the size of the droplets is related to the flow rate of the cleaning liquid in the liquid channel and the flow rate of the gas in the gas channel, and the larger the flow rate of the cleaning liquid, the larger the flow rate of the gas, the more sufficient the atomization, and the smaller the droplets; the speed of the liquid drops is related to the air flow speed, the air flow speed is higher when the air pressure is higher, the liquid drop speed is higher, and the irrigation force acting on the wound is higher, so that different irrigation forces can be obtained by setting different cleaning liquid flow rates and air pressures to adapt to different wounds.

Wherein, the detailed structure of the washing handle 1 will be described in detail below.

In the present embodiment, the cleaning solution includes, but is not limited to, a wound cleaning agent commonly used in the art, such as sterile water, physiological saline, and the like.

Further, in some preferred embodiments of the present application, the liquid supply unit includes a cleaning liquid container 20, a liquid inlet pipe 21, and a liquid pump 22, wherein the cleaning liquid container 20 is used for containing a cleaning liquid; the liquid inlet pipe 21 has one end connected to the cleaning liquid containing device 20 and the other end connected to the liquid passage, and is configured to convey the cleaning liquid to the liquid passage; the liquid pump 22 is disposed on the liquid inlet pipeline 21 and is configured to deliver the cleaning liquid to the liquid channel at a preset flow rate.

The cleaning solution container 20 includes, but is not limited to, a sterile bag, a liquid storage bottle, a liquid storage tank, etc. The liquid pump 22 may be a peristaltic pump, the liquid inlet pipe 21 is an elastic hose, the liquid inlet pipe 21 is clamped between rollers of the peristaltic pump, and a driver (e.g., a stepping motor) of the peristaltic pump drives the rollers to alternately extrude and release the liquid inlet pipe 21 to deliver the cleaning liquid; the flow rate of the cleaning liquid output by the peristaltic pump per revolution is determined, and the flow rate of the cleaning liquid entering the liquid channel can be adjusted by adjusting the rotating speed of a driver of the peristaltic pump. In some embodiments, the flow rate of the cleaning solution is preferably 10 to 50 mL/min.

Further, in some preferred embodiments of the present application, the air supply unit includes an air pump 30 and an air inlet pipe 31, wherein one end of the air inlet pipe 31 is connected to an outlet end of the air pump 30, and the other end is connected to the air passage.

In the present embodiment, the air pump 30 pumps air into the air passage of the cleaning handle 1 through the air inlet pipe 31 by compressing and pressurizing, and the cleaning liquid and the air flow through the liquid passage and the air passage of the cleaning handle 1, respectively, and join at the outlet end of the cleaning handle 1, so that the cleaning liquid is sprayed out in a mist form. In some embodiments, the preferred gas pressure is 100 to 300kpa and the droplet diameter is 5 to 200 μm.

The air pump 30 preferably uses a brushless dc motor as a driver, and stepless speed regulation can be achieved.

Further, in some preferred embodiments of the present application, the wound cleansing system further comprises a control unit including a controller (not shown) connected to the liquid pump 22 and the air pump 30 for controlling the operation of the liquid pump 22 and the air pump 30.

Specifically, the control end of the controller is electrically connected to the driver of the liquid pump 22 and the driver of the air pump 30 respectively, and is used for sending a driving instruction to the drivers to adjust the rotation speeds of the liquid pump 22 and the air pump 30, so that the flow rate of the cleaning liquid entering the cleaning handle 1 and the pressure of the air are adjusted, and the adjustment of the flushing strength of the wound cleaning system is realized to adapt to the wound treatment under different conditions.

Further, in some preferred embodiments of the present application, the air supply unit further includes a pressure detector 32, and the pressure detector 32 is disposed on the air inlet pipe 31 near the outlet end of the air pump 30 and connected to the controller.

In the present embodiment, the pressure detector 32 is configured to monitor the outlet pressure of the air pump 30 in real time, that is, to monitor the pressure of the air entering the air flow channel in real time, so as to adjust the rotation speed of the air pump 30 according to practical application; the pressure detector 32 includes, but is not limited to, a pressure sensor.

Further, in some preferred embodiments of the present application, the control system further comprises a human-machine interface 40 connected to the controller.

In this embodiment, the human-computer interface 40 is connected to the signal end of the controller, and an operator can directly control various functions of the wound cleaning system of the present application through the human-computer interface 40, wherein the human-computer interface 40 may be a touch screen, a key controller, or the like, and may be in communication connection with the controller in a wired or wireless manner. Preferably, the human-computer interface 40 adopts a touch screen, which not only can set parameters such as cleaning fluid flow and gas pressure, but also can display working condition data such as cleaning fluid flow value, gas pressure value, motor running state and the like of the wound cleaning system of the present application. Specifically, an operator can preset the flow rate of the cleaning liquid on the human-computer interaction interface 40, and the controller adjusts the flow rate of the cleaning liquid by regulating and controlling the rotating speed of the liquid pump 22; and a gas pressure gear can be preset on the human-computer interaction interface 40, and the controller adjusts the gas pressure in the liquid channel by regulating the rotating speed of the gas pump 30 until the pressure detected by the pressure detector 32 reaches a preset pressure range.

Further, the wound cleansing system further comprises a foot switch 5 connected with the controller for controlling the start and stop of the liquid pump 22 and the air pump 30.

Wherein, foot switch 5 can be mechanical type or induction type, and the start-stop of the control of the operating personnel of being convenient for washes.

Further, in some preferred embodiments of the present application, the control unit includes a main unit 41, the main unit 41 includes a housing, the liquid pump 22, the air pump 30, the pressure detector 32 and the controller are all mounted in the housing of the main unit 41, the human-machine interface 40 is mounted on the housing of the main unit 41, and the foot switch 5, at least part of the liquid inlet pipe 21 and the air inlet pipe 22 are disposed outside the housing of the main unit 41. A hanging rack 6 is further provided on the main machine 41, and the cleaning solution containing device 20 is hung on the main machine 41 through the hanging rack 6.

Further, referring to fig. 2 to 9, a cleaning handle 1 of a preferred embodiment of the present application is shown, wherein the cleaning handle 1 includes an outer tube 10 and an inner tube 11, an inner cavity of the inner tube 11 forms a liquid passage 121, and a cavity between the inner tube 11 and the outer tube 10 forms a gas passage 122; the outlet end of the cleaning handle 1 is provided with a nozzle 13 which is in fluid connection with the liquid channel 11; further comprising a nozzle cap 14, said nozzle cap 14 having a nozzle cap cavity 140 communicating with said gas channel 122, said nozzle 13 being located in said nozzle cap cavity 140; wherein the nozzle 13 is connected with the outlet end 111 of the inner tube 11, the nozzle cap 14 is connected with the outlet end 101 of the outer tube 10, a tapered gap 15 is arranged between the nozzle 13 and the nozzle cap 14, and the gas is ejected through the gap 15.

In this embodiment, the outlet end 101 of the outer tube 10 and the outlet end 111 of the inner tube 11 together constitute the outlet end of the cleaning handle 1; because the nozzle 13 and the nozzle cap 14 have the tapered gap 15, that is, an annular tapered channel is formed between the outer wall of the nozzle 13 and the inner wall of the nozzle cap 14, when the gas reaches the tapered channel, the volume of the gas is compressed to form negative pressure, and after the gas is guided through the tapered channel, a high-speed gas flow is formed, so that the siphon action of the high-speed gas flow can help to suck the cleaning liquid in the liquid inlet pipeline 21 into the liquid channel 121; on the other hand, the cleaning liquid is wrapped by the high-speed gas and is instantly scattered to be atomized to form liquid drops; the high-speed gas carries high energy and momentum in the flowing process, so that the cleaning liquid can be atomized at high speed and high efficiency.

Illustratively, the nozzle 13 and the nozzle cap 14 have oppositely disposed inlet and outlet ends, respectively; the inlet end 130 of the nozzle 13 is connected to the outlet end 111 of the inner tube 11, the inlet end 140 of the nozzle cap 14 is connected to the outlet end 101 of the outer tube 10, and the cross-sectional area of the nozzle cap 14 is gradually reduced from the inlet end 141 to the outlet end 142 thereof, so that a tapered gap 4 is formed between the nozzle 13 and the nozzle cap 14.

In some preferred forms, the outlet end 131 of the nozzle 13 extends beyond the outlet end 142 of the nozzle cap 14, i.e., the free end of the nozzle 13 extends beyond the nozzle cap interior 140, which ensures that the gas emitted from the gap 15 intersects the liquid emitted from the outlet end 131 of the nozzle 13, thereby uniformly and efficiently atomizing the liquid.

Wherein the nozzle 13 is coaxial with the centerline of the nozzle cap 14.

In some preferred forms, the cross-sectional area of the nozzle 13 decreases from the inlet end 130 to the outlet end 131 to form a reduced cross-sectional area, which helps to increase the pressure of the liquid so that the liquid ejected from the nozzle 13 is emitted at a greater distance.

In some preferred manners, the sizes of the nozzles 13 and the outlet ends of the nozzle caps 14 are set according to actual requirements. In some embodiments, for wound cleansing, the inner diameter (i.e., the diameter of the ejection orifice) of the outlet end 130 of the nozzle 13 is preferably 0.3mm, the outer diameter is preferably 0.45mm, and the inner diameter (i.e., the diameter of the ejection orifice) of the outlet end 141 of the nozzle cap 14 is preferably 0.8 mm.

Further, in some preferred embodiments of the present application, the cleaning handle 1 further comprises a liquid connector 161 for connecting with the liquid supply unit, the liquid connector 161 is communicated with the inlet end 110 of the inner tube 11; and a gas connector 162 for connecting with the gas supply unit, the gas connector 162 being in communication with the inlet end 100 of the outer tube 10.

Specifically, the gas joint 162 and the liquid joint 161 are respectively provided with through holes penetrating through two ends thereof along the axis thereof, one end of the gas joint 162 is connected with the outlet of the gas inlet pipeline 31, the other end is communicated with the inlet end 100 of the outer pipe 10, and gas enters the gas channel 122 through the gas inlet pipeline 31 and the gas joint 162; one end of the liquid joint 161 is connected to the outlet of the liquid inlet pipe 21, and the other end is connected to the inlet end 110 of the inner pipe 11, and the cleaning liquid from the cleaning liquid container 20 enters the liquid channel 121 through the liquid inlet pipe 21 and the liquid joint 161.

The gas connector 162 and the liquid connector 161 may be luer connectors.

Further, in some preferred embodiments of the present application, the washing handle 1 further includes a joint connector 17, as shown in fig. 6 and 7, the joint connector 17 includes:

a connector body 170, a first connection hole 171 and a second connection hole 172 opened on the connector body 170, and at least one vent 173 communicating with the first connection hole 171;

the connector further comprises a first connecting part 174 arranged on the connector body 170, wherein the first connecting part 174 is provided with a through hole communicated with the vent hole 173; the second connecting hole 172 is communicated with the first connecting portion 174 through a liquid passage 175;

wherein the vent 173 is located between the first connection hole 171 and the first connection part 174, the first connection hole 171 is used for connecting the gas connector 162, the second connection hole 172 is used for connecting the liquid connector 161, the first connection part 174 is used for connecting the inlet end 100 of the outer tube 10, and the liquid channel 175 is used for connecting the inlet end 110 of the inner tube 11.

Specifically, the first connection hole 171 and the first connection portion 174 are respectively located at two ends of the connector body 170 in the length direction, and are communicated with each other through a vent 173, and the vent 173 is opened from the first connection hole 171 to the first connection portion 174; the second connection hole 172 is positioned above the first connection hole 171 and the first connection portion 174, and the second connection hole 172 does not communicate with the first connection hole 171 but communicates with the first connection portion 174 through the liquid passage 175; wherein the liquid passage 175 includes a vertical section 175a communicating with the second connection hole 172 and a horizontal section 175b communicating with the first connection portion 174, an axis of the vertical section 175a is coaxial with an axis of the second connection hole 172, and an axis of the horizontal section 175b is coaxial with axes of the first connection hole 171 and the first connection portion 174; the axis of the first connection hole 171 or the axis of the first connection portion 175 is perpendicular to the axis of the second connection hole 172.

Wherein, the gas joint 162, the liquid joint 161, the outer tube 10 and the inner tube 11 can be connected to the joint connecting piece 17 by a suitable manner, so as to realize the gas path communication and the liquid path communication of the cleaning handle 1 of the present application, such as clamping, screwing, welding or connecting by fasteners. In some preferred manners, the gas connector 162 is screwed into the first connection hole 171, the liquid connector 161 is screwed into the second connection hole 172, the first connection part 174 is screwed into the inlet end 100 of the outer tube 10, the inlet end 110 of the inner tube 11 is inserted into the through hole of the first connection part 174 and inserted into the horizontal section 175b of the liquid channel 175; when the joint connector 17 is connected to the cleaning handle 1, the connector body 170 seals the inlet ends of the outer tube 10 and the inner tube 11, respectively, the gas from the gas inlet pipe 31 enters the gas passage 122 through the gas port 162, the vent 173 and the through hole of the first connecting portion 174, and the cleaning liquid from the liquid inlet pipe 21 enters the inner tube 14 through the liquid port 161 and the liquid passage 175 (specifically, the vertical section 175a of the liquid passage 175).

In this embodiment, the gas connector 162 and the liquid connector 161 are connected to the cleaning handle 1 in an increased tightness by the connector connecting member 17, which at least helps to ensure that the energy and momentum of the high pressure gas entering the handle are not lost.

Further, in some preferred embodiments of the present application, the cleaning handle 1 further includes a nozzle fixing base 18, the nozzle fixing base 18 is located in the nozzle cap inner cavity 140, and the nozzle 13 is connected to the outlet end 111 of the inner tube 11 through the nozzle fixing base 18;

as shown in fig. 8 and 9, the nozzle fixing seat 18 includes a cylindrical body 180, and the cylindrical body 180 includes a first fixing portion 181 for connecting with the inner tube 11 and a second fixing portion 182 for connecting with the nozzle 13; the first fixing part 181 and the second fixing part 182 are respectively provided with a first fixing hole 184 and a second fixing hole 185 penetrating through two ends thereof along the axis thereof, and the first fixing hole 184 is communicated with the second fixing hole 185;

the outer side of the cylindrical body 180 is further provided with a third fixing portion 183, the third fixing portion 183 is provided with at least one through hole 186, the third fixing portion 183 seals the outlet end 101 of the outer tube 10, and the inner cavity 140 of the nozzle cap is in gas communication with the outer tube 10 through the through hole 186.

Specifically, the at least one through hole 186 is opened along the length direction of the cylindrical body 180, and surrounds the cylindrical body 180, when the nozzle fixing seat 18 is connected to the cleaning handle 1, the third fixing part 183 abuts against the tube wall of the outlet end 101 of the outer tube 10, so as to seal the outlet end 101 of the outer tube 10, at this time, the nozzle cap 14 is covered on the outlet end 101 of the outer tube 10, the nozzle fixing seat 18 is pressed and fixed at the outlet end 101 of the outer tube 10 through the nozzle cap 14, and gas entering the outer tube 10 enters the tapered gap 15 between the nozzle 13 and the nozzle cap 14 through the through hole 186.

Wherein, the inner tube 11 and the nozzle 13 can be connected with the nozzle fixing seat 18 by a suitable method such as clamping, screwing, welding or adopting a fastener; in some preferred forms, the outlet end 111 of the inner tube 11 is inserted into the first fixing hole 184, and the inlet end 130 of the nozzle 13 is screwed into the second fixing hole 185.

Further, in some preferred embodiments of the present application, a sealing member is disposed at a connection point of the gas connector 162 and the first connection hole 171, a connection point of the first connection part 174 and the inlet end 100 of the outer tube 10, a connection point of the nozzle 13 and the nozzle holder 18, and a connection point of the nozzle cap 14 and the outer tube 10.

In particular, the sealing element may be an elastic sealing ring, such as an O-ring, for further enhancing the tightness of the connection and the sealing between the above components, so as to prevent the washing handle from leaking liquid and air.

Further, a sealing element is also arranged at the joint of the inner pipe 11, the nozzle fixing seat 18 and the joint connecting piece 17, for example, the outlet end 111 of the inner pipe 11 is inserted into the first fixing hole 184 and sealed by an O-ring, and a clamping portion 187 for accommodating the O-ring is arranged in the first positioning hole 184; the inlet end 110 of the inner pipe 11 is inserted into the horizontal section 175a of the liquid passage 175 through the through hole of the first connecting portion 174 and sealed by an O-ring, and a clamping portion 176 for receiving the O-ring is provided in the horizontal section 175 a.

Further, in some preferred embodiments of the present application, the cleaning handle 1 further comprises a splash guard 19, the splash guard 19 being removably attached to the nozzle cap 14.

Specifically, the splash guard 19 is sleeved outside the nozzle cap 14, so that the nozzle cap 14 is surrounded therein, liquid splashing can be effectively prevented, and therefore, the flushing liquid is prevented from polluting the surrounding area or operators in the flushing process.

Further, in some preferred embodiments of the present application, the splash guard 19 is a flexible cover made of a soft material, and the splash guard 19 has a plurality of holes 190.

Specifically, the soft material can be silica gel, rubber and the like, and can be attached to the skin in a seamless manner; through setting up the opening can be convenient for observe the wound and be used for timely exhaust gas.

The wound cleansing system of a preferred embodiment of the present application is used as follows:

the splash guard 19 is attached to the skin surface of the wound to be washed, the foot switch 5 is used for starting washing, and the cleaning liquid is sprayed out of the nozzle 13 and atomized to be directed at the wound part for debridement treatment.

Further, in order to evaluate the cleaning effect of the wound cleaning system, fresh lotus roots are cut off the outer skins by a knife, the surfaces of the lotus roots are roughened by a file, carbon powder is coated on the surfaces of the lotus roots, the wound cleaning system and the existing cleaning device (with the flow rate of 1L/min) with a circular spray head with the inner diameter of 3mm are respectively adopted to wash for 10s, wherein the wound cleaning system adopts the cleaning handle 1 with the inner diameter of a nozzle 13 of 0.3mm, the outer diameter of 0.45mm and the inner diameter of a nozzle cap 14 of 0.8mm, the gas pressure is set to be 200kpa, and the flow rate of cleaning solution is 50mL/min, so that the cleaning effect of the wound cleaning system is obviously superior to that of a circular water column washing effect with large flow rate, and the cleaning solution consumption is 1/20 of the traditional method, therefore, the wound cleaning system has the advantages of small cleaning solution amount and good washing effect, and greatly saves medical cost, Meanwhile, the pollution in the operation process is reduced, and great convenience is brought to medical care personnel. Wherein, under the pressure of 200kpa, the gas flow rate reaches 12L/min, and the speed of the gas flow at the outlet end of the gas channel reaches 582 m/s.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A wound cleansing system, comprising:

2. The wound cleansing system of claim 1, wherein the cleansing handle further comprises:

3. The wound cleansing system of claim 2, wherein the cleansing handle further comprises:

4. The wound cleansing system of claim 2, wherein the cleansing handle further comprises:

5. The wound cleansing system of claim 1, wherein the liquid supply unit comprises:

the cleaning liquid containing device is used for containing cleaning liquid;

6. The wound cleansing system of claim 5, wherein the air supply unit comprises:

7. The wound cleansing system of claim 6, further comprising a control unit including a controller connecting the liquid pump and the air pump for controlling operation of the liquid pump and the air pump.

8. The wound cleansing system of claim 7, wherein the air supply unit further comprises a pressure detector disposed on the air inlet line proximate the outlet end of the air pump and connected to the controller.

9. The wound cleansing system of claim 7, wherein the control unit further comprises a human-machine interface coupled to the controller.

10. The wound cleansing system of any one of claims 7-9, further comprising a foot switch connected to the controller for controlling the start and stop of the liquid pump and the air pump.