Abdominal cavity sealing dressing capable of displaying temperature and humidity

Abstract

The utility model relates to an abdominal cavity sealing dressing capable of displaying temperature and humidity. The abdominal cavity sealing dressing comprises a polyurethane layer, a humidity sensor, a hardened layer, a pressure sensor, a temperature sensor and a hemostasis layer, the humidity sensor is arranged on the side, attached to the skin, of the polyurethane layer. The abdominal cavity sealing dressing capable of displaying the temperature and the humidity is of a multi-layer composite structure, the dressing is provided with a signal module and used for wireless transmission of temperature and pressure data and monitoring of the internal condition of the abdominal cavity, the device is structurally similar to human normal skin, and the innermost chitosan hemostasis layer is similar to a subcutaneous tissue layer; the effect of protecting internal tissues and organs is achieved; the middle layer comprises a sensor which can reflect partial key indexes of the abdominal cavity and is similar to a neuroreceptor part; the outer layer is good in mechanical performance, can resist external mechanical injuries and is similar to a skin layer, the effect similar to the skin can be achieved through the bionic structure, and treatment of the open abdominal wall trauma is more efficient and intelligent.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an abdominal cavity closed dressing with temperature and humidity display. Background Technique

[0002] At present, there are many technologies applied to early abdominal cavity closure and intestinal protection, including closed negative pressure suction, Bogota bag, etc. The Bogota bag can be made of a disinfected infusion bag or blood transfusion bag. Its advantages include low cost, wide source, smooth inner surface that does not adhere to intestinal tissues, and simple usage method; the negative pressure suction technology can timely remove the exudates in the abdominal cavity through an external negative pressure suction device, which can effectively reduce the occurrence of intestinal adhesions. Although these technologies can all achieve the effect of temporarily closing the abdominal cavity and protecting abdominal organs, due to trauma-induced gastrointestinal dilation, bleeding, exudation, and increased abdominal cavity contents caused by intra-abdominal inflammation, and decreased abdominal wall compliance caused by inflammation and edema, it often causes intra-abdominal hypertension. And these factors interact with each other, leading to a continuous increase in abdominal pressure and even triggering abdominal compartment syndrome.

[0003] The occurrence of abdominal compartment syndrome is often very concealed, which can cause difficulty in breathing, reduced cardiac output, and decreased blood pressure in the wounded, seriously threatening the life of the wounded. If only the above technologies are used for the temporary closure of the open abdomen, the abdominal pressure changes of the wounded will be ignored, resulting in serious consequences and affecting the treatment and prognosis of the wounded. Currently, the commonly used methods for measuring intra-abdominal pressure in clinical practice include direct manometry, transvesical manometry, transgastric manometry, and so on. Among them, transvesical manometry is the most widely used method for measuring intra-abdominal pressure. Because its measurement method is simple and has a high correlation with the data measured by direct manometry, it is also used as the gold standard for measuring intra-abdominal pressure by the Abdominal Compartment Syndrome Society.

[0004] However, this measurement method also has some disadvantages: First, strict aseptic principles need to be followed during the measurement process to avoid urinary tract infections caused by urine reflux. It is very difficult to meet the aseptic operation requirements under emergency conditions, which greatly limits the application of this method; Second, it is not suitable for patients with neurogenic bladder and bladder injury, and it is very difficult to judge the bladder status of the wounded in open abdominal trauma. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides an abdominal cavity closed dressing with temperature and humidity display, which solves the problem of being unable to monitor the temperature, humidity, and pressure inside the patient's abdominal cavity in real time.

[0006] To achieve the above object, the utility model provides the following technical solution: An abdominal cavity closed dressing with temperature and humidity display, including a polyurethane layer, a humidity sensor, a hardening layer, a pressure sensor, a temperature sensor, and a hemostatic layer;

[0007] The humidity sensor is arranged on the side of the polyurethane layer that fits the skin for monitoring the humidity of the dressing;

[0008] The hardening layer is arranged on the humidity sensor to increase the hardness of the dressing and support the abdominal wall;

[0009] The pressure sensor and the temperature sensor are both installed on the hardening layer for monitoring the intra-abdominal pressure and intra-abdominal temperature;

[0010] The hemostatic layer is arranged on the hardening layer and adheres to the pressure sensor and the temperature sensor to form a seal on the bleeding site;

[0011] A signal transmission module is arranged on the side of the polyurethane layer away from the skin for transmitting the values of each module to the display device.

[0012] Furthermore, the hemostatic layer is made of chitosan material.

[0013] Furthermore, the inside of the hemostatic layer has a spongy structure and is provided with a number of interconnected voids.

[0014] Furthermore, the adjacent polyurethane layer, hardening layer and hemostatic layer are connected by biological tissue glue.

[0015] Furthermore, the hardening layer is made of polystyrene.

[0016] Furthermore, the signal transmission module is signal-connected to the humidity sensor, pressure sensor and temperature sensor for transmitting or receiving the values of each sensor.

[0017] Furthermore, the signal transmission module is communicatively connected to an external display device for transmitting the humidity, pressure and temperature values to the display device.

[0018] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0019] 1. The abdominal cavity closure dressing with temperature and humidity display has a multi-layer composite structure and is equipped with a signal module for wireless transmission of temperature and pressure data to realize the monitoring of the internal situation of the abdominal cavity. The device is structurally similar to the normal human skin. Its innermost chitosan hemostatic layer is similar to the subcutaneous tissue layer, playing a role in protecting the internal tissues and organs; the middle layer contains sensors that can reflect some key indicators of the abdominal cavity, similar to the nerve receptor part; the outer layer has good mechanical properties and can resist external mechanical damage, similar to the skin layer. Through this bionic structure, it can achieve a function similar to that of the skin, making the treatment of abdominal wall open wounds more efficient and intelligent.

[0020] 2. The abdominal cavity closure dressing with temperature and humidity display has good hemostatic performance, can partially solve the massive bleeding caused by abdominal wall vascular injuries, and has a good sealing effect on the defective abdominal wall. Since the current rescue equipment cannot directly observe the wound environment during the rescue process, it is necessary to use sensors to reflect some key indicators. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural view of the present utility model;

[0022] Figure 2 is a schematic bottom view structural view of the present utility model;

[0023] Figure 3 is a schematic disassembled structural view of the present utility model.

[0024] In the figure: 1, polyurethane layer; 2, humidity sensor; 3, hardening layer; 4, pressure sensor; 5, temperature sensor; 6, hemostatic layer; 7, signal transmission module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1-3 , a temperature and humidity display abdominal cavity closure dressing in this embodiment, which enables it to have the functions of quickly stopping bleeding, closing abdominal cavity defects, and at the same time being able to reflect abdominal pressure and temperature and indicate the humidity of the dressing, thereby effectively improving the rescue rate of open abdominal trauma patients;

[0027] Specifically, it includes a polyurethane layer 1, a humidity sensor 2, a hardening layer 3, a pressure sensor 4, a temperature sensor 5, and a hemostatic layer 6; the humidity sensor 2 is arranged on the side of the polyurethane layer 1 that fits the skin for monitoring the humidity of the dressing; the hardening layer 3 is arranged on the humidity sensor 2 for enhancing the hardness of the dressing and supporting the abdominal wall; both the pressure sensor 4 and the temperature sensor 5 are installed on the hardening layer 3 for monitoring the intra-abdominal pressure and intra-abdominal temperature; the hemostatic layer 6 is arranged on the hardening layer 3 and fits on the pressure sensor 4 and the temperature sensor 5 for forming a seal on the bleeding site; a signal transmission module 7 is arranged on the side of the polyurethane layer 1 away from the skin for transmitting the values of each module to the display device.

[0028] In actual setting, the resistive flexible pressure sensor 4 was constructed by textile technology, its microstructure was observed using an electron microscope, and then the fabricated pressure sensor 4 was subjected to pressure response testing and stability testing; the humidity sensing layer 2 was made by spraying reactive blue-225 dye on the surface of chitosan non-woven fabric, and its humidity response specificity was analyzed; the temperature sensor 5 selected the MF52 type temperature sensor 5, and the signal transmission module 7 selected the ESP32 series microcontroller unit, and the mobile phone APP was developed; finally, the components of the functional abdominal wall closure dressing were combined with biological glue.

[0029] Furthermore, in order to ensure the hemostatic effect of the hemostatic layer 6, the hemostatic layer 6 preferably made of chitosan material in this embodiment. Chitosan has good water absorption performance. By absorbing the water in the blood, it concentrates coagulation factors and promotes blood coagulation. In addition, the polyacrylate sodium SPA molecules grafted in the chitosan structure have abundant carboxyl groups, which can bind to water molecules by hydrogen bonds. Under the action of these two mechanisms, this material can quickly absorb the water in the blood and promote blood coagulation.

[0030] Even further, in order to ensure the effect of the hemostatic layer 6 on absorbing the washing liquid, the interior of the hemostatic layer 6 in this embodiment has a sponge-like structure and is provided with a number of interconnected voids.

[0031] In actual setting, after the material absorbs water, the internal pores collapse, and a hydrogel structure with adhesion ability begins to form at the part in contact with the wound surface, which can better form a sealing effect on the bleeding site. Moreover, the water movement inside the hydrogel structure is slower, and the saturated state of water absorption only appears on the side in contact with the wound surface, while the rest remains unsaturated, maintaining a considerable coagulation potential. In addition, water is continuously transported from the saturated area to the unsaturated area, providing conditions for continuous blood coagulation. Finally, this material has a certain adhesiveness and has an adhesion and blocking effect on ruptured blood vessels.

[0032] It should be noted that the polyurethane layer 1, the hardening layer 3 and the hemostatic layer 6 are connected by biological tissue glue adjacent to each other, and the hardening layer 3 is made of polystyrene.

[0033] In addition, in order to ensure that the humidity sensor 2, the pressure sensor 4 and the temperature sensor 5 can effectively transmit to the display device, the signal transmission module 7 in this embodiment is signal-connected to the humidity sensor 2, the pressure sensor 4 and the temperature sensor 5 for transmitting or receiving the values of each sensor, and the signal transmission module 7 is communicatively connected to the external display device for transmitting the humidity, pressure and temperature values to the display device.

[0034] During actual use, the signal transmission module 7 is responsible for receiving data from sensors, such as the values of humidity, pressure, and temperature. It processes, amplifies, converts, and encodes these values to ensure the accuracy and reliability of transmission. In addition, the signal transmission module 7 is communicatively connected to an external display device. This communication can be achieved through wired or wireless means, enabling the humidity, pressure, and temperature data measured by the sensors to be transmitted to the display device. Once the data is transmitted from the sensors to the display device, the user can intuitively view the current humidity, pressure, and temperature values through the display device, which helps to monitor the environmental conditions or the operating status of the equipment and take necessary measures in a timely manner.

[0035] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature and humidity display abdominal cavity sealing dressing, characterized in that: It comprises a polyurethane layer (1), a humidity sensor (2), a hardening layer (3), a pressure sensor (4), a temperature sensor (5) and a hemostatic layer (6); The humidity sensor (2) is arranged on the side of the polyurethane layer (1) that contacts the skin, so as to monitor the humidity of the dressing; The hardening layer (3) is arranged on the humidity sensor (2) to increase the hardness of the dressing and support the abdominal wall; The pressure sensor (4) and the temperature sensor (5) are both mounted on the hardened layer (3) to monitor the intra-abdominal pressure and the intra-abdominal temperature; The hemostatic layer (6) is arranged on the hardening layer (3) and is attached to the pressure sensor (4) and the temperature sensor (5) to form a seal on the bleeding site; A signal transmission module (7) is arranged on the side of the polyurethane layer (1) away from the skin, so as to transmit the numerical values ​​of each module to a display device.

2. The temperature and humidity display abdominal occlusive dressing according to claim 1, characterized in that: The hemostatic layer (6) is made of chitosan material.

3. The temperature and humidity display abdominal occlusive dressing according to claim 1, characterized in that: The interior of the hemostatic layer (6) is a sponge-like structure and is provided with a plurality of inter-connected gaps.

4. The abdominal cavity sealing dressing with temperature and humidity display according to claim 1, characterized in that: The adjacent polyurethane layers (1), hardening layers (3) and hemostatic layers (6) are connected by biological tissue glue.

5. The abdominal cavity sealing dressing with temperature and humidity display according to claim 1, characterized in that: The hardened layer (3) is made of polystyrene.

6. The abdominal cavity sealing dressing with temperature and humidity display according to claim 1, characterized in that: The signal transmission module (7) is signal-connected to the humidity sensor (2), the pressure sensor (4) and the temperature sensor (5) so as to transmit or receive the values ​​of the sensors.

7. The temperature and humidity display abdominal cavity sealing dressing according to claim 6, characterized in that: The signal transmission module (7) is communicatively connected to an external display device so as to transmit humidity, pressure and temperature values ​​to the display device.

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