CN101940805B - Negative pressure wound therapy system that can detect the transparency of wound exudate - Google Patents

Abstract

The invention discloses a negative pressure wound treatment system capable of detecting transparency of wound exudate, which comprises: a liquid collecting bottle for collecting wound exudate; a negative pressure wound therapy device consisting of a negative pressure source and a controller; the wound kit is used for filling and sealing the wound and is communicated with the liquid collecting bottle through a connecting pipe; further comprising: wound exudate transparency detection module includes: the transmitting unit transmits electromagnetic wave or sound wave signals to the liquid collecting bottle; the receiving unit is used for receiving electromagnetic wave or sound wave signals reflected or refracted by the liquid collecting bottle; and the detection control unit is arranged in the controller and used for judging the transparency of the wound exudate at the position of the wound exudate transparency detection module according to the electromagnetic wave or sound wave signals received by the receiving unit. The negative pressure wound therapy system capable of detecting the transparency of the exudate can detect the transparency of the wound exudate, and provides convenience for wound exudate management and research of medical staff or other users.

Description

Negative pressure wound therapy system that can detect the transparency of wound exudate

technical field

The invention relates to the technical field of negative pressure wound treatment equipment, in particular to a negative pressure wound treatment system capable of detecting the transparency of exudate.

Background technique

Negative pressure wound therapy equipment, called Negative_Pressure_Wound_Therapy_Devices in the United States, referred to as NPWT, its principle is to promote wound healing by applying negative pressure to the wound. According to the clinical experience in the United States in the past 10 years, the device has a good healing effect on various acute and chronic wounds.

Generally, a negative pressure wound therapy system includes a negative pressure wound therapy device, a wound kit, and a container for collecting exudate from the wound (herein, the container is referred to as a liquid collection bottle). Among them, the wound kit is used to seal the wound and create a negative pressure space. The negative pressure wound treatment equipment is used to create the required wound negative pressure. The negative pressure wound treatment equipment consists of a negative pressure source and a controller. See Figure 1, which shows a common negative pressure wound therapy system. The dotted line frame is the negative pressure wound treatment equipment 8; 1 is the skin tissue around the human wound; the wound filler 2 covers the human wound; the wound sealer 3 is set above the wound filler 2 to seal the wound and fill the wound The object 2 is connected to the liquid collection bottle 5 through the connecting pipe 4, so that the exudate from the wound is guided into the liquid collection bottle 5, and the exudate from the wound is collected by the liquid collection bottle 5. Another part of the liquid collection bottle 5 One end is connected to the negative pressure source 6, and the negative pressure is provided by the negative pressure source 6 to provide power for the wound exudate to flow to the liquid collection bottle 5; the negative pressure source 6 is connected to a controller 7, and the negative pressure source 6 is controlled by the controller 7. Achieve control.

Wound exudate is a bodily fluid that accumulates in a wound for many physiological reasons. In wound management, exudate management is one of the important topics in modern wound care research.

The research on exudate in modern wound care mainly focuses on two aspects. One aspect involves the volume-time relationship of exudate, key physical parameters such as exudate color, transparency, and exudate viscosity; Another aspect is about various physiological and chemical parameters such as the composition and function of wound exudate. Among them, transparency, as an important physical parameter of wound exudate, is of great significance to the study of wounds. In the prior art, the transparency of the wound exudate is still directly checked and recorded by the medical personnel on a regular basis, which causes great inconvenience to the research of the medical personnel.

Contents of the invention

The purpose of the present invention is to provide a negative pressure wound treatment system capable of detecting the transparency of wound exudate, which can detect the transparency of wound exudate, and provide convenience for medical staff to study wounds.

In order to solve the above technical problems, the negative pressure wound treatment system of the present invention that can detect the transparency of wound exudate includes:

Liquid collection bottle to collect wound exudate;

Negative pressure wound therapy equipment, consisting of a negative pressure source and a controller;

The wound kit, which fills the wound and seals the wound, communicates with the liquid collection bottle through the connecting tube;

Also includes:

Wound exudate transparency detection module, including:

The transmitting unit transmits electromagnetic waves or sound wave signals to the liquid collection bottle;

The receiving unit receives the electromagnetic wave or sound wave signal reflected or refracted by the liquid collecting bottle;

The detection control unit is arranged in the controller, and judges the transparency of the wound exudate at the position where the wound exudate detection module is located according to the electromagnetic wave or acoustic wave signal received by the receiving unit.

Preferably, according to the magnitude of the received electromagnetic wave or acoustic wave signal, the value or gear of the transparency of the wound exudate is calculated according to the corresponding table of the preset wound exudate transparency value or gear and the electromagnetic wave or acoustic wave signal value or gear .

Preferably, in the predetermined correspondence table between the transparency value or level of the wound exudate and the value or level of the electromagnetic wave or acoustic wave signal, the value or level of the transparency of the wound exudate and the received electromagnetic wave or acoustic wave signal Values or gears are positively correlated.

Preferably, in the correspondence table between the preset wound exudate transparency value or level and the electromagnetic wave or acoustic wave signal value or level, when there is no exudate at the liquid collection bottle between the receiving unit and the transmitting unit , the value or level of the electromagnetic wave or acoustic wave signal received by the receiving unit corresponds to the maximum value or the maximum level of transparency of the wound exudate.

Preferably, the wound exudate transparency detection module is arranged on a transmission mechanism, and the transmission mechanism is connected to a driving mechanism.

Preferably, the transmission mechanism is any one of a screw, a gear set, a belt, and a pulley.

Preferably, a plurality of wound exudate transparency detection modules are included, which are evenly distributed along the longitudinal direction of the liquid collection bottle.

Preferably, the controller calculates the average transparency value of the exudate according to the detected transparency values of each wound exudate transparency detection module.

Preferably, a display unit is also included, which is connected with the controller and displays the transparency of the wound exudate.

Preferably, the display unit displays the value or scale of the transparency of the wound exudate.

Compared with the prior art, the negative pressure wound therapy system capable of detecting the transparency of wound exudate according to the present invention is equipped with a wound exudate transparency detection module, which includes: a transmitting unit, which transmits electromagnetic waves or sound wave signals to the liquid collection bottle; The receiving unit receives the electromagnetic wave or sound wave signal reflected or refracted by the liquid collection bottle; the detection control unit is set in the controller, and judges the wound exudate at the location of the wound exudate detection module according to the electromagnetic wave or sound wave signal received by the receiving unit Therefore, the size of the transparency of the wound exudate can be obtained by using the magnitude of the electromagnetic wave or acoustic wave signal of the receiving unit, which provides convenience for medical staff to manage and study the wound exudate.

Description of drawings

Fig. 1 is a structural schematic diagram of an existing negative pressure wound therapy system;

Fig. 2 is a structural schematic diagram of Embodiment 1 of a negative pressure wound treatment system capable of detecting the transparency of wound exudate according to the present invention;

Fig. 3 is the optical path schematic diagram of part A in Fig. 2;

Fig. 4 is a schematic diagram of cooperation between the wound exudate transparency detection module, the transmission mechanism and the driving mechanism in the second embodiment of the negative pressure wound therapy system capable of detecting the transparency of wound exudate according to the present invention.

In the figure, relevant reference signs are as follows:

1-wound, 2-wound filler, 3-wound closure, 4-connecting tube, 5-collection bottle, 51-side wall of liquid collection bottle, 52-inner area of liquid collection bottle, 6-negative pressure source, 7 - controller, 8 - negative pressure wound treatment equipment, 9 - wound exudate transparency detection module, 91 - transmitting unit, 92 - receiving unit, 10 - screw rod, 11 - motor, 12 - display unit.

Detailed ways

The negative pressure wound treatment system capable of detecting the transparency of exudate according to the present invention will be described in detail below with reference to the accompanying drawings.

Embodiment one

Referring to Fig. 2 and Fig. 3, Fig. 2 is a schematic structural diagram of a negative pressure wound treatment system capable of detecting the transparency of exudate in this embodiment, and Fig. 3 is a schematic diagram of the optical path at point A in Fig. 2 .

The negative pressure wound treatment system capable of detecting the transparency of exudate in this embodiment includes:

Liquid collection bottle 5, used to collect wound exudate;

A negative pressure wound treatment device 8, including a negative pressure source 6 and a controller 7;

The wound kit is used to fill the wound and seal the wound, including a wound filler 2 and a wound closure 3, and the wound filler 2 communicates with the liquid collection bottle 5 through the connecting tube 4;

On the side wall of the liquid collection bottle 5, four wound exudate transparency detection modules 9 are arranged at the same interval in the longitudinal direction;

The controller 7 is connected to a display unit 12, and the display unit 12 can display the value or scale of the transparency of the wound exudate.

Wherein, the display unit is an LED display interface. Of course, other display interfaces, such as LCD interfaces, can also be selected.

Wherein, each wound exudate exudate volume detection module 9 includes:

The transmitting unit 91 transmits electromagnetic wave signals to the liquid collection bottle 5 and is arranged on one side of the liquid collection bottle 5;

The receiving unit 92 receives the electromagnetic wave signal refracted by the liquid collection bottle 5 and is arranged on the other side of the liquid collection bottle 5 opposite to the transmitting unit 91 .

The detection control unit judges the degree of transparency of the wound exudate according to the magnitude of the electromagnetic wave or ultrasonic signal received by the receiving unit. Specifically: preset a table corresponding to the value of the transparency of wound exudate and the value of the electromagnetic wave received by the receiving unit. In this table, the maximum value of the received electromagnetic wave signal corresponds to the maximum value of transparency 100, and the received electromagnetic wave signal is the smallest The value corresponds to the minimum value of transparency 0. In the range of 0 to 100, each value corresponds to an electromagnetic wave signal value. Therefore, the corresponding wound exudate transparency value can be found according to the electromagnetic wave signal value received by the receiving unit. . When there is no exudate between the receiving unit and the transmitting unit, the electromagnetic wave signal of the receiving unit is the largest. At this time, the value corresponding to the transparency is the maximum value. When the electromagnetic wave signal received by the receiving unit is less than the maximum value, it means that the transmitting unit and the receiving unit There is exudate between the units, the smaller the signal value, the lower the transparency, and the minimum transparency when no signal is received at all. Of course, the size of the transparency and the size of the electromagnetic wave signal can also be corresponded one by one through the level of the gear, for example, the size of the transparency is divided into 2, 3, 4, 5, 6 and other gears, and each gear corresponds to the corresponding gear of the electromagnetic wave signal value.

Wherein, the electromagnetic waves used in this embodiment are infrared rays, as another embodiment, visible light, ultraviolet light, laser or other electromagnetic signals may also be used, and ultrasonic waves, infrasonic waves or other sound wave signals may be used.

Referring to FIG. 3 , the emitting unit 91 emits infrared rays S1, penetrates and refracts into the inner area 52 of the liquid collecting bottle through one side of the side wall 51 of the liquid collecting bottle, and then emits from the other side of the side wall 51 of the liquid collecting bottle, and the receiving unit 92 receives The refracted infrared rays S1 pass through, and another part of the infrared rays is reflected into reflected rays S2.

Wherein, according to the size of the infrared signal received by the receiving unit 92 of the four wound exudate transparency detection modules 9 arranged longitudinally along the liquid collection bottle, the liquid collection bottle corresponding to the position of each wound exudate transparency detection module 9 can be judged The size of the transparency of the exudate at the corresponding position inside, because the transparency of the wound exudate above the liquid collection bottle is inconsistent with the transparency of the wound exudate below, therefore, the size of the infrared signal received by each receiving unit 92 corresponds to the wound Calculate the average value of the transparency of the exudate, and use it as the transparency value of the current wound exudate.

Embodiment two

The differences between this embodiment and Embodiment 1 are:

Only one wound exudate transparency detection module 9 is set, and the transmitting unit and the receiving unit are set together. Referring to FIG. 10, the center line is parallel to the up and down direction of the liquid collection bottle 5; preferably, the wound exudate transparency detection module 9 is constrained in the circumferential direction of the center line of the screw mandrel 10, and can only move in the direction of the center line of the screw mandrel 10; One end of the rod 10 is connected to the motor 11. Driven by the motor 11, the screw rod 10 rotates around its center line, thereby driving the wound exudate transparency module 9 to move up and down along the center line of the screw rod 10, and the corresponding position of the liquid collection bottle 5 The magnitude of the received electromagnetic wave signal is detected, and then the transparency of the wound is measured.

Wherein, the screw mandrel 10 can also be replaced by any one of other transmission mechanisms such as: a gear set, a belt, and a pulley; as long as the wound exudate transparency detection module 9 can move in the longitudinal direction relative to the liquid collection bottle 5, the The purpose of detecting the transparency of the corresponding position of the liquid collection bottle 5 can be achieved.

When the motor 11 is working, the screw rod 10 drives the wound exudate transparency detection module 9 to move up and down, and the controller 7 can calculate the transparency of the wound exudate at different heights in the liquid collection bottle 5 according to the stroke of the motor, thereby calculating The average transparency of the wound exudate in the liquid collection bottle 5.

The above are only preferred implementations of the present invention. It should be noted that the above preferred implementations should not be regarded as limiting the present invention, and the scope of protection of the present invention should be determined by the claims. For those skilled in the art, without departing from the spirit and scope of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims (10)

1. A negative pressure wound therapy system capable of detecting the transparency of wound exudate, comprising: Liquid collection bottle to collect wound exudate; Negative pressure wound therapy equipment, consisting of a negative pressure source and a controller; The wound kit, which fills the wound and seals the wound, communicates with the liquid collection bottle through the connecting tube; It is characterized in that it also includes: Wound exudate transparency detection module, including: The transmitting unit transmits electromagnetic waves or sound wave signals to the liquid collection bottle; The receiving unit receives the electromagnetic wave or sound wave signal reflected or refracted by the liquid collection bottle; The detection control unit is arranged in the controller, and judges the transparency of the wound exudate at the position where the wound exudate transparency detection module is located according to the electromagnetic wave or sound wave signal received by the receiving unit. 2. The negative pressure wound treatment system capable of detecting the transparency of wound exudate according to claim 1, wherein the detection and control unit follows the predetermined transparency of wound exudate according to the magnitude of the received electromagnetic wave or acoustic wave signal. Values or gears and electromagnetic wave or sound wave signal values or gears corresponding table, calculate the value or gear of the transparency of wound exudate. 3. The negative pressure wound treatment system capable of detecting the transparency of wound exudate as claimed in claim 2, wherein the predetermined wound exudate transparency value or gear position and electromagnetic wave or acoustic wave signal value or gear position In the corresponding table, the value or scale of the transparency of the wound exudate is positively correlated with the value or scale of the received electromagnetic wave or acoustic wave signal. 4. The negative pressure wound treatment system capable of detecting the transparency of wound exudate as claimed in claim 2, wherein, in the predetermined wound exudate transparency value or gear position and electromagnetic wave or acoustic wave signal value or gear position In the corresponding table, when there is no exudate at the liquid collection bottle between the receiving unit and the transmitting unit, the value or level of the electromagnetic wave or sound wave signal received by the receiving unit and the maximum value or maximum level of transparency of the wound exudate bit corresponding. 5. The negative pressure wound therapy system capable of detecting the transparency of wound exudate as claimed in claim 1, wherein said wound exudate transparency detection module is arranged on a transmission mechanism, and said transmission mechanism is connected to a drive mechanism. 6. The negative pressure wound treatment system capable of detecting the transparency of wound exudate according to claim 5, wherein the transmission mechanism is any one of a screw, a gear set, a belt, and a pulley. 7. The negative pressure wound treatment system capable of detecting the transparency of wound exudate according to claim 1, characterized in that it comprises a plurality of wound exudate transparency detection modules distributed evenly along the longitudinal direction of the liquid collection bottle. 8. The negative pressure wound treatment system capable of detecting the transparency of wound exudate as claimed in claim 7, wherein the controller calculates the wound value according to the detected transparency value of each wound exudate transparency detection module. The average transparency value of the exudate. 9. The negative pressure wound treatment system capable of detecting the transparency of wound exudate according to any one of claims 1 to 8, further comprising a display unit connected to the controller to display the transparency of wound exudate the size of. 10 . The negative pressure wound treatment system capable of detecting the transparency of wound exudate according to claim 9 , wherein the display unit displays the value or level of transparency. 11 .

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