CN116983144B

CN116983144B - Degradable polyhydroxyethyl silicate fiber dressing and processing method thereof

Info

Publication number: CN116983144B
Application number: CN202311227013.8A
Authority: CN
Inventors: 董瑞平; 刘东洋; 任海波; 姚婷; 谢阳
Original assignee: Jiangsu Xinlikang Medical Technology Co ltd
Current assignee: Jiangsu Xinlikang Medical Technology Co ltd
Priority date: 2023-09-22
Filing date: 2023-09-22
Publication date: 2023-12-01
Anticipated expiration: 2043-09-22
Also published as: CN116983144A

Abstract

The invention relates to the technical field of medical equipment, in particular to a degradable polyhydroxyethyl silicate fiber dressing and a processing method thereof. Including the fixed layer, the fixed layer is provided with the bottom, goes up the bottom and is connected with the intermediate level, and intermediate level is connected with the bottom down, goes up bottom and bottom down all have the hydrophobicity, and the fixed layer is connected with symmetrical first shunt tubes, and first shunt tubes intercommunication has the shunt joint, and first shunt tubes runs through fixed layer, goes up bottom, intermediate level and bottom down, and the lower extreme of first shunt tubes and the downside parallel and level of bottom down, one of them shunt joint intercommunication have first feed liquor pipe, and another shunt joint intercommunication has the fluid-discharge tube. The invention drives dirt, bacteria and other impurities on the scald wound surface to flow through the cleaning liquid, ensures that the scald wound surface is in a clean state, not only prevents the scald wound surface from being infected, but also promotes the wound surface tissue to grow and heal, and simultaneously reduces the temperature of the scald wound surface in the flowing process of the cleaning liquid along the scald wound surface.

Description

Degradable polyhydroxyethyl silicate fiber dressing and processing method thereof

Technical Field

The invention relates to the technical field of medical equipment, in particular to a degradable polyhydroxyethyl silicate fiber dressing and a processing method thereof.

Background

The dressing is a medical material for covering sores, wounds or other damages, the traditional dressing has stronger water absorbability and is drier, a proper moist environment cannot be provided for the wound surface, the wound surface can be kept in the moist environment along with development by using the dressing made of some special hydrophobic materials, and adhesion can not occur with the wound surface when the dressing is peeled off from the wound surface.

When treating the surface of a wound of scald and burn, the medical dressing can be used for promoting the growth and healing of the surface of a wound tissue, however, the surface of a wound of scald and burn is not only isolated by the dressing, but also is washed intermittently in the treatment process, bacteria, impurities and dirt on the surface of a wound are cleaned, the surface of a wound is kept clean to promote the healing of the wound, the dressing is required to be frequently peeled off from the surface of a wound when the surface of a wound is washed, the adhesive coating part of the dressing is not only lost to be sticky, the continuous use of the medical dressing is affected, and bacteria are reattached to the surface of a wound to cause the wound to be infected when the washing is stopped.

Disclosure of Invention

In view of the shortcomings of the prior art dressings mentioned in the background above, the present invention provides a dressing based on degradable polyhydroxyethyl silicate fibers and a method of processing the same.

The technical scheme of the invention is as follows: the utility model provides a fiber dressing based on degradable polyhydroxyethyl silicate, including the fixed layer, one side of fixed layer is provided with the bottom, go up the bottom and be connected with the intermediate level, the intermediate level sets up to porous structure and has strong hydrophilicity, the fixed layer scribble has the glue film that is used for fixed, the intermediate level is connected with the bottom down, go up bottom and bottom all have the hydrophobicity, the fixed layer is connected with symmetrical first shunt tubes, symmetrical first shunt tubes communicate respectively has the shunt tubes, first shunt tubes runs through the fixed layer, go up the bottom, the intermediate level and bottom down, the lower extreme of first shunt tubes and the downside parallel and level of bottom down, first shunt tubes set up to soft rubber tube, one of them shunt tubes intercommunication has first feed liquor pipe, another shunt tubes intercommunication has the fluid-discharge tube.

Further, both the upper and lower bottom layers are provided as degradable polyhydroxyethyl silicate fibers for maintaining the wound in a moist environment and reducing environmental pollution.

Further, a smooth curved hydrophobic coating is arranged on one side of the lower bottom layer away from the middle layer, and is used for preventing the lower bottom layer from being adhered to a wound.

Further, the fixing layer is made of microporous cloth and is used for isolating external dust and guaranteeing that body fluid generated at a wound part can diffuse outwards.

Further, the fixing device also comprises symmetrical binding bands, wherein the symmetrical binding bands are fixedly connected to two sides of the fixing layer, and the binding bands are coated with adhesive layers for fixing and are used for improving the fixing effect of the fixing layer.

Further, still including the fixed establishment who is used for improving leakproofness between fixed layer and the skin, fixed establishment sets up in the fixed layer, fixed establishment is including symmetrical supporting plate, symmetrical supporting plate rigid coupling is in the both sides of symmetrical bandage, one side rigid coupling that the supporting plate is close to the fixed layer has the elastic bag, elastic bag and fixed layer extrusion contact, first feed liquor pipe intercommunication has the supporting shell, the equal rigid coupling of symmetrical supporting plate has the connecting pipe, connecting pipe and adjacent elastic bag intercommunication, the connecting pipe of symmetry all communicates with the supporting shell, one side intercommunication that the supporting shell kept away from first feed liquor pipe has the second feed liquor pipe, be provided with the reposition of redundant personnel subassembly that is used for changing the washing liquid flow direction in the supporting shell, the upside of fixed layer is provided with the cooling subassembly to the wound cooling.

Further, the supporting sheet is made of elastic materials and used for improving the pressure on the fixed layer.

Further, the flow dividing assembly comprises a sliding rod, the sliding rod is connected to the supporting shell in a sliding mode, a piston plate is connected to the sliding rod in a sliding mode, the piston plate is fixedly connected with the sliding rod, a first baffle plate is symmetrically arranged on the piston plate in a fixedly connected mode, the connecting portion of the adjacent connecting pipe and the supporting shell is sealed, the piston plate is fixedly connected with a second baffle plate through a mounting seat, the connecting portion of the first liquid inlet pipe and the supporting shell is sealed, a limiting plate is fixedly connected to the sliding rod, an elastic piece is arranged on the sliding rod in a sleeved mode, and two ends of the elastic piece are fixedly connected with the limiting plate and the supporting shell of the sliding rod respectively.

Further, the cooling assembly comprises a water storage bag, the water storage bag is arranged on one side, far away from the upper bottom layer, of the fixed layer, the water storage bag is communicated with a symmetrical second shunt pipe, and the second shunt pipe is communicated with an adjacent shunt joint.

Further, the water storage bag is made of water-blocking breathable materials and is used for keeping the wound part in a ventilation state.

Further, the processing method of the degradable polyhydroxyethyl silicate fiber comprises the following steps: adding ethyl orthosilicate and absolute ethyl alcohol into a reaction kettle, setting the rotating speed to be 50-250 revolutions per minute, stirring for 0-30 minutes, wherein the mole ratio of the ethanol to the ethyl orthosilicate is 0.1-2.5, then uniformly mixing injection water and 0.5-2N nitric acid, pouring the mixture into the reaction kettle, carrying out hydrolysis condensation reaction for 12-24 hours at the reaction temperature of 15-45 ℃, wherein the mole ratio of the injection water to the ethyl orthosilicate is 0.2-3.5, the mole ratio of the nitric acid to the ethyl orthosilicate is 0.001-0.01, after the hydrolysis condensation is finished, on the basis of the original rotating speed, increasing the rotating speed to be 5-50 revolutions per minute, starting compressed air, adjusting the temperature to be 0.1-6m, setting the temperature to be 45-85 ℃, and carrying out reaction evaporation time for 2-10 hours, and finishing the reaction evaporation when the liquid viscosity reaches 0.1-3.0 Pa.s.

In summary, the invention has the following advantages:

1. the intermediate layer structure adsorbs the body fluid of patient's scald wound department secretion, makes the scald wound be in dry state, under the effect of lower bottom hydrophobic coating, makes the scald wound be in moist state, and unnecessary body fluid is adsorbed by the intermediate layer structure, and this just guarantees that the body fluid of secretion can not soak at the scald wound for a long time, is favorable to scald wound healing, and simultaneously upper and lower bottom all set up to degradable polyhydroxyethyl silicate fibre, and degradable polyhydroxyethyl silicate fibre has the hydrophobicity, slows down the volatilization of absorptive body fluid in the intermediate layer structure equally, further prolongs the time that this dressing keeps the scald wound to be in moist state.

2. Through last bottom, intermediate level and lower bottom cooperation, guarantee that the scald surface of a wound is in the moist state, provide better healing environment for the scald surface of a wound, prevent simultaneously that medical personnel from peeling off the inspection with this dressing from the scald surface of a wound when, because the body fluid that secretes takes place to solidify and lead to this dressing and scald surface of a wound bonding, it causes further injury to the scald surface of a wound to lead to this dressing to peel off the in-process, the hydrophobic coating of lower bottom sets up to smooth curved surface simultaneously, and then reduce the contact of lower bottom and scald surface of a wound, make this dressing peel off more easily from the scald surface of a wound, go up the bottom, intermediate level and lower bottom cooperation form an isolation layer, prevent that bacterium in the air from entering into the infection of initiation on the scald surface of a wound through the dressing.

3. The cleaning liquid drives dirt, bacteria and other impurities on the scald wound to flow, so that the scald wound is guaranteed to be in a clean state, the scald wound is prevented from being infected, the wound tissue growth and healing are promoted, and meanwhile, the temperature of the scald wound can be reduced by the cleaning liquid in the flowing process along the scald wound, so that pain of a wounded is relieved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic cross-sectional perspective view of the anchoring layer and the upper substrate of the present invention;

FIG. 3 is an enlarged perspective view of the structure of FIG. 2 according to the present invention;

FIG. 4 is a schematic perspective view of the strap and support sheet of the present invention;

FIG. 5 is a schematic cross-sectional perspective view of the support shell of the present invention;

fig. 6 is a schematic cross-sectional perspective view of the water storage bladder of the present invention.

In the reference numerals: 1-fixed layer, 2-upper bottom layer, 3-intermediate layer, 4-lower bottom layer, 5-first shunt tubes, 6-shunt joints, 7-first inlet tube, 8-drain tube, 9-bandage, 10-supporting piece, 11-elastic bag, 12-supporting shell, 13-connecting tube, 14-second inlet tube, 15-sliding rod, 16-piston plate, 17-first baffle, 18-second baffle, 19-elastic piece, 20-water storage bag, 21-second shunt tubes.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Example 1: 1-3, the degradable polyhydroxyethyl silicate fiber dressing comprises a fixing layer 1, an upper bottom layer 2 is arranged on one side of the fixing layer 1, the fixing layer 1 is made of microporous cloth and used for isolating external dust and preventing dust in air from carrying bacteria to attach to a scald wound surface, so that the scald wound surface is infected and body fluid generated at a wound part is ensured to diffuse outwards, the scald wound surface is kept in a stable environment, the upper bottom layer 2 is connected with a middle layer 3, the middle layer 3 is made of a porous structure and has strong hydrophilicity, the middle layer 3 is used for adsorbing body fluid secreted by the scald wound surface, a glue layer used for fixing is smeared on the skin of a patient, the middle layer 3 is connected with a lower bottom layer 4, both the upper bottom layer 2 and the lower bottom layer 4 have hydrophobicity, the scald wound surface is kept in a moist environment, the upper bottom layer 2 and the lower bottom layer 4 are both provided with degradable polyhydroxyethyl silicate fibers for keeping the wound in a moist environment and reducing the pollution to the environment, the lower side of the lower bottom layer 4 is provided with a smooth curved hydrophobic coating for preventing the lower bottom layer 4 from adhering to the wound, the fixed layer 1 is connected with two symmetrical first shunt tubes 5, the two symmetrical first shunt tubes 5 are respectively communicated with a shunt joint 6, the shunt joint 6 is an existing device, the flow path of liquid is changed by adjusting the shunt joint 6, the first shunt tubes 5 penetrate through the fixed layer 1, the upper bottom layer 2, the middle layer 3 and the lower bottom layer 4, the lower ends of the first shunt tubes 5 are flush with the lower side surface of the lower bottom layer 4, the first shunt tubes 5 are provided with soft rubber tubes for preventing the first shunt tubes 5 from causing secondary injury to the scalded wound, the left branch joint 6 is communicated with a first liquid inlet pipe 7, the right branch joint 6 is communicated with a liquid outlet pipe 8, the first liquid inlet pipe 7 and the liquid outlet pipe 8 are in a blocking state in an initial state, after the fixing layer 1 is attached to a scald wound surface, medical staff fixes the first liquid inlet pipe 7 and the liquid outlet pipe 8 on the arm of a patient through medical adhesive tapes.

Medical personnel laminate the dressing on patient's arm scald surface of a wound to laminate fixed layer 1 on patient's arm, the dressing is fixed completely at patient's arm this moment, intermediate level 3 structure adsorbs patient scald surface of a wound department secretion's body fluid, under the effect of lower bottom 4 hydrophobic coating, make scald surface of a wound be in moist state, unnecessary body fluid is adsorbed by intermediate level 3 structure, this just guarantees that the body fluid of secretion can not soak at scald surface of a wound for a long time, be favorable to scald surface of a wound healing, simultaneously at bottom 2 and lower bottom 4 all set up to degradable polyhydroxyethyl silicate fibre, degradable polyhydroxyethyl silicate fibre has the hydrophobicity, slow down the volatilization of absorptive body fluid in the intermediate level 3 structure equally, further lengthen this dressing and keep scald surface of a wound in moist state's time.

Through last bottom 2, intermediate level 3 and the cooperation of bottom 4 down, guarantee that the scald surface of a wound is in the moist state, provide better healing environment for the scald surface of a wound, prevent simultaneously that medical personnel from peeling off the inspection with this dressing from the scald surface of a wound when, because the body fluid that secretes takes place to solidify and lead to this dressing and scald surface of a wound bonding, lead to this dressing to cause further injury to the scald surface of a wound in peeling off the in-process, the hydrophobic coating of bottom 4 sets up to smooth curved surface simultaneously, and then reduce the contact of bottom 4 and scald surface of a wound down, make this dressing peel off from the scald surface of a wound more easily, go up bottom 2, intermediate level 3 and bottom 4 cooperation form an isolation layer down, prevent that bacterium in the air from entering into the infection of initiation on the scald surface of a wound through the dressing.

In the using process of the dressing, the first liquid inlet pipe 7 is communicated with an electric liquid injection device, (the electric liquid injection device is an existing device and is not further stated herein), cleaning liquid is injected into the electric liquid injection device, medical staff starts the electric liquid injection device, the cleaning liquid in the electric liquid injection device is injected into the first liquid inlet pipe 7, the cleaning liquid flows along the first liquid inlet pipe 7 and flows into the left first shunt pipe 5 through the left shunt joint 6, the cleaning liquid flows out of the lower end of the left first shunt pipe 5 and contacts with a scald wound surface, the cleaning liquid flows between the dressing and the scald wound surface under the limiting action of the dressing along with the gradual increase of the injected cleaning liquid, the discharged cleaning liquid flows along the liquid outlet pipe 8 through the right shunt joint 6, medical personnel collect the exhaust washing liquid, drive the dirt on the surface of a wound that scalds through the washing liquid, bacterium and other impurity flow, guarantee that the surface of a wound that scalds is in clean state, promote the wound tissue growth healing when not only preventing the surface of a wound that scalds from infecting, simultaneously the washing liquid is along the in-process that flows of surface of a wound that scalds, can also reduce the temperature of the surface of a wound that scalds, thereby alleviate wounded's pain, after the surface of a wound that scalds clearance finishes, medical personnel close electric priming device, and disconnect first feed liquor pipe 7 and electric priming device, medical personnel are clean with the remaining washing liquid between the surface of a wound, and carry out shutoff with first feed liquor pipe 7 and fluid-discharge pipe 8, and fix first feed liquor pipe 7 and fluid-discharge pipe 8 at patient's arm through medical sticky tape, avoid first feed liquor pipe 7 and fluid-discharge pipe 8 to influence patient normal action, through upper and lower layer 2 The middle layer 3 is matched with the lower bottom layer 4 to further absorb the cleaning liquid from the scalded wound surface and keep the scalded wound surface in a moist state.

Example 2: on the basis of embodiment 1, as shown in fig. 4, the utility model further comprises symmetrical binding bands 9, wherein the symmetrical binding bands 9 are fixedly connected to two sides of the fixed layer 1, and the binding bands 9 are smeared with glue layers for fixing, so as to improve the fixing effect of the fixed layer 1, and medical staff directly peels the fixed layer 1 from the arm of a patient through the binding bands 9, thereby avoiding the medical staff from directly stretching the fixed layer 1 to cause the fixed layer 1 to be wrinkled.

Medical personnel laminate this dressing behind the surface of a wound scalds to twine two bandage 9 and laminate at patient's arm, improve the fixed strength of this dressing, simultaneously when medical personnel detects the surface of a wound scalds, medical personnel directly peels off fixed layer 1 from patient's arm through bandage 9, avoids medical personnel direct stretching fixed layer 1 and makes it take place the fold, causes the glue film inefficacy of fixed layer 1, leads to fixed effect reduction of fixed layer 1.

Example 3: on the basis of embodiment 2, as shown in fig. 4-6, the device further comprises a fixing mechanism for improving the tightness between the fixing layer 1 and the skin, the fixing mechanism is arranged on the fixing layer 1, the fixing mechanism comprises two symmetrical supporting sheets 10, the two symmetrical supporting sheets 10 are fixedly connected to two sides of the two binding bands 9, the supporting sheets 10 are made of elastic materials and are used for improving the pressure on the fixing layer 1, the attaching effect of the fixing layer 1 and the skin of a patient is improved, an elastic bag 11 is fixedly connected to the lower side of the supporting sheets 10, the elastic bag 11 is in extrusion contact with the fixing layer 1, when the liquid pressure in the elastic bag 11 is increased, the elastic bag 11 expands outwards and is extruded at the edge position of the fixing layer 1, the first liquid inlet pipe 7 is communicated with a supporting shell 12, the symmetrical supporting sheets 10 are fixedly connected with connecting pipes 13, the connecting pipes 13 are communicated with the adjacent elastic bags 11, the right sides of the supporting shells 12 are communicated with second liquid inlet pipes 14, the second liquid inlet pipes 14 are in an initial state, the cleaning liquid flows to the adjacent connecting pipes 13 along the two connecting pipes 11, the inner sides of the two connecting pipes 11 are used for enabling the liquid pressure in the elastic bags to flow to be distributed and are used for cooling the cooling components to be arranged on the cooling side of the elastic bag 1, and the cooling components are arranged in the cooling direction of the cooling components are changed.

As shown in fig. 5, the flow dividing assembly includes a sliding rod 15, the sliding rod 15 is slidably connected to the supporting shell 12, the sliding rod 15 is in sealing fit with the supporting shell 12, a piston plate 16 is slidably connected to the supporting shell 12, the piston plate 16 is in sealing fit with the supporting shell 12, the piston plate 16 is fixedly connected with the sliding rod 15, the piston plate 16 is fixedly connected with two symmetrical first baffles 17, the first baffles 17 are used for sealing the connection between the adjacent connecting pipe 13 and the supporting shell 12, the piston plate 16 is fixedly connected with a second baffle 18 through a mounting seat, the second baffle 18 is used for sealing the connection between the first liquid inlet pipe 7 and the supporting shell 12, the sliding rod 15 moves downwards, the connection between the connecting pipe 13 and the supporting shell 12 and the connection between the first liquid inlet pipe 7 and the supporting shell 12 is changed, a limiting plate is fixedly connected with the sliding rod 15, an elastic piece 19 is sleeved on the sliding rod 15, and two ends of the elastic piece 19 are fixedly connected with the limiting plate of the sliding rod 15 and the supporting shell 12 respectively.

As shown in fig. 6, the cooling component comprises a water storage bag 20, the water storage bag 20 is arranged on the upper side of the fixed layer 1, the water storage bag 20 is made of water-blocking breathable materials and used for keeping a wound part in a ventilation state, a layer of water film is formed in the water storage bag 20 when the cleaning liquid flows in the water storage bag 20, and then cooling and pain relieving are carried out on a wound surface of a scald, the water storage bag 20 is communicated with symmetrical second shunt pipes 21, and the second shunt pipes 21 are communicated with adjacent shunt joints 6.

Before washing the wound surface of a patient scalds, medical staff communicates an electric priming device with a second liquid inlet pipe 14, between the electric priming device, medical staff presses down a sliding rod 15 firstly, the sliding rod 15 drives a piston plate 16 and a first baffle 17 and a second baffle 18 on the upper portion of the piston plate 16 to move downwards, an elastic piece 19 is compressed, the second baffle 18 moves downwards, the sealing of the junction between a connecting pipe 13 and a supporting shell 12 is relieved by the two first baffles 17, the junction between the first liquid inlet pipe 7 and the supporting shell 12 is sealed by the second baffle 18, the medical staff starts the electric priming device, cleaning liquid flows into the supporting shell 12 along the second liquid inlet pipe 14, the cleaning liquid flows into an elastic bag 11 along the two connecting pipes 13, after the cleaning liquid enters the elastic bag 11, the liquid pressure in the elastic bag 11 is increased, the elastic bag 11 deforms, and the elastic bag 1 is extruded, so that the fixed skin of a patient is in contact with the elastic bag 11 is completely deformed, after the elastic bag 11 is completely deformed, the medical staff stops pressing down the sliding rod 15, under the elastic force of the elastic piece 19, the sliding rod 15 drives the elastic piece 15 to move up to the junction between the first liquid inlet pipe 7 and the supporting shell 12 along the second liquid inlet pipe 14, the junction between the elastic bag 1 and the adhesive layer is prevented from being deformed, and the junction between the elastic bag 1 is deformed, and the adhesive layer is prevented from being deformed by the elastic bag 1, and the adhesive layer is deformed by the elastic bag is prevented from being deformed by the elastic bag.

After the washing is finished, the second liquid inlet pipe 14 is disconnected with the electric liquid injection device, the medical staff repeats the operation, residual cleaning liquid between the scalded wound surface and the dressing is discharged, meanwhile, the sliding rod 15 is pressed downwards again, the cleaning liquid in the elastic bag 11 flows along the adjacent connecting pipe 13 under the action of the elastic force of the elastic bag 11, and is discharged from the second liquid inlet pipe 14, so that the elastic bag 11 is restored to the initial state, the medical staff then stops pressing the sliding rod 15, and the operation is repeated, so that the sliding rod 15 is restored.

When the scalded wound is required to be cooled and analgesic, the humidity of the scalded wound is considered to be kept in a normal range, so that medical staff sequentially adjusts the shunting joints 6 at the left side and the right side, and then repeats the operation, so that the cleaning liquid entering the shunting joint 6 at the left side flows along the second shunting pipe 21 at the left side, the cleaning liquid flows into the water storage bag 20, the cleaning liquid flows along the water storage bag 20 from left to right and is discharged through the second shunting pipe 21 at the right side, the cleaning liquid forms a layer of water film in the water storage bag 20, the upper side of the fixed layer 1 is cooled, and the heat exchange is carried out between the dressing and the water film in the water storage bag 20, so that the scalded wound is cooled and analgesic.

After the cooling and pain relieving are finished, the medical staff stops injecting the cleaning liquid into the water storage bag 20, the medical staff discharges the cleaning liquid remained in the water storage bag 20, the residual cleaning liquid in the water storage bag 20 evaporates with the formation of water vapor, the air permeability of the water storage bag 20 is ensured, then the second liquid inlet pipe 14 and the liquid outlet pipe 8 are sealed again, and the second liquid inlet pipe 14, the liquid outlet pipe 8 and the like are fixed on the arm of a patient through medical adhesive tapes.

Example 4: based on the embodiment 3, the processing method of the degradable polyhydroxyethyl silicate fiber is as follows: adding ethyl orthosilicate and absolute ethyl alcohol into a reaction kettle, setting the rotating speed to be 50-250 revolutions per minute, stirring for 0-30 minutes, wherein the mole ratio of the ethanol to the ethyl orthosilicate is 0.1-2.5, then uniformly mixing injection water and 0.5-2N nitric acid, pouring the mixture into the reaction kettle, carrying out hydrolysis condensation reaction for 12-24 hours at the reaction temperature of 15-45 ℃, wherein the mole ratio of the injection water to the ethyl orthosilicate is 0.2-3.5, the mole ratio of the nitric acid to the ethyl orthosilicate is 0.001-0.01, after the hydrolysis condensation is finished, on the basis of the original rotating speed, increasing the rotating speed to be 5-50 revolutions per minute, starting compressed air, adjusting the temperature to be 0.1-6m, setting the temperature to be 45-85 ℃, and carrying out reaction evaporation time for 2-10 hours, and finishing the reaction evaporation when the liquid viscosity reaches 0.1-3.0 Pa.s.

The prepared degradable polyhydroxyethyl silicate fiber is in a reticular structure, is used for nursing chronic wounds such as venous ulcers of lower limbs and the like, plays roles in covering and protecting by covering the ulcer wounds, is gradually absorbed in the wound healing process, can be used as a medicine carrying platform for different wound surfaces, is used on the wounds in cooperation with various medicines, and promotes wound healing.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The degradable polyhydroxyethyl silicate fiber dressing is characterized by comprising a fixing layer (1), wherein an upper bottom layer (2) is arranged on one side of the fixing layer (1), an intermediate layer (3) is connected to the upper bottom layer (2), the intermediate layer (3) is of a porous structure and has strong hydrophilicity, an adhesive layer for fixing is smeared on the fixing layer (1), a lower bottom layer (4) is connected to the intermediate layer (3), both the upper bottom layer (2) and the lower bottom layer (4) have hydrophobicity, symmetrical first shunt tubes (5) are connected to the fixing layer (1), the symmetrical first shunt tubes (5) are respectively communicated with shunt joints (6), the first shunt tubes (5) penetrate through the fixing layer (1), the upper bottom layer (2), the intermediate layer (3) and the lower bottom layer (4), the lower end of each first shunt tube (5) is flush with the lower side surface of the lower bottom layer (4), the first shunt tubes (5) are of soft rubber tubes, one of the shunt joints (6) is communicated with a first liquid inlet tube (7), and the other shunt joints (6) are communicated with liquid discharge tubes (8);

the fixing device also comprises symmetrical binding bands (9), wherein the symmetrical binding bands (9) are fixedly connected to two sides of the fixing layer (1), and the binding bands (9) are smeared with adhesive layers for fixing and are used for improving the fixing effect of the fixing layer (1);

still including being used for improving fixed layer (1) and the fixed establishment of leakproofness between the skin, fixed establishment sets up in fixed layer (1), fixed establishment is including symmetrical backing sheet (10), the rigid coupling of symmetrical backing sheet (10) is in the both sides of symmetrical bandage (9), one side rigid coupling that backing sheet (10) is close to fixed layer (1) has elastic bag (11), elastic bag (11) and fixed layer (1) extrusion contact, first feed liquor pipe (7) intercommunication has support shell (12), symmetrical backing sheet (10) all rigid coupling has connecting pipe (13), connecting pipe (13) and adjacent elastic bag (11) intercommunication, symmetrical connecting pipe (13) all communicate with support shell (12), one side intercommunication that first feed liquor pipe (7) was kept away from to support shell (12) has second feed liquor pipe (14), be provided with the reposition of redundant personnel subassembly that is used for changing the washing liquid flow direction in support shell (12), the upside of fixed layer (1) is provided with the cooling down subassembly to the wound.

2. A dressing based on degradable polyhydroxyethyl silicate fibres according to claim 1, wherein the upper (2) and lower (4) base layers are both provided as degradable polyhydroxyethyl silicate fibres for maintaining the wound in a moist environment and reducing environmental pollution.

3. A dressing based on degradable polyhydroxyethyl silicate fibres according to claim 1, wherein the side of the lower base layer (4) remote from the intermediate layer (3) is provided with a smoothly curved hydrophobic coating for preventing adhesion of the lower base layer (4) to the wound.

4. A dressing based on degradable polyhydroxyethyl silicate fibres according to claim 1, characterised in that the fixing layer (1) is provided as a microporous cloth for isolating external dust and ensuring that body fluids generated at the wound site can diffuse outwards.

5. A dressing based on degradable polyhydroxyethyl silicate fibres according to claim 1, wherein the support sheet (10) is provided as an elastic material for increasing the pressure against the anchoring layer (1).

6. The dressing according to claim 1, characterized in that the shunt assembly comprises a sliding rod (15), the sliding rod (15) is slidably connected to the supporting shell (12), a piston plate (16) is slidably connected to the supporting shell (12), the piston plate (16) is fixedly connected with the sliding rod (15), the piston plate (16) is fixedly connected with a symmetrical first baffle (17), the first baffle (17) is used for sealing the connection part between the adjacent connecting pipe (13) and the supporting shell (12), the piston plate (16) is fixedly connected with a second baffle (18) through a mounting seat, the second baffle (18) is used for sealing the connection part between the first liquid inlet pipe (7) and the supporting shell (12), the sliding rod (15) is fixedly connected with a limiting plate, the sliding rod (15) is sleeved with an elastic piece (19), and two ends of the elastic piece (19) are fixedly connected with the limiting plate of the sliding rod (15) and the supporting shell (12) respectively.

7. The dressing according to claim 1, wherein the cooling component comprises a water storage bag (20), the water storage bag (20) is arranged on one side of the fixed layer (1) far away from the upper bottom layer (2), the water storage bag (20) is communicated with symmetrical second shunt pipes (21), and the second shunt pipes (21) are communicated with adjacent shunt joints (6).

8. A dressing based on degradable polyhydroxyethyl silicate fibres according to claim 7, wherein the water storage bag (20) is provided as a water-resistant breathable material for maintaining the wound site in a ventilated state.

9. A dressing based on degradable polyhydroxyethyl silicate fibres according to any of claims 1-8, wherein the processing of the degradable polyhydroxyethyl silicate fibres is as follows: adding ethyl orthosilicate and absolute ethyl alcohol into a reaction kettle, setting the rotating speed to be 50-250 revolutions per minute, stirring for 0-30 minutes, wherein the mole ratio of the ethanol to the ethyl orthosilicate is 0.1-2.5, then uniformly mixing injection water and 0.5-2N nitric acid, pouring the mixture into the reaction kettle, carrying out hydrolysis condensation reaction for 12-24 hours at the reaction temperature of 15-45 ℃, wherein the mole ratio of the injection water to the ethyl orthosilicate is 0.2-3.5, the mole ratio of the nitric acid to the ethyl orthosilicate is 0.001-0.01, after the hydrolysis condensation is finished, on the basis of the original rotating speed, increasing the rotating speed to be 5-50 revolutions per minute, starting compressed air, adjusting the temperature to be 0.1-6m, setting the temperature to be 45-85 ℃, and carrying out reaction evaporation time for 2-10 hours, and finishing the reaction evaporation when the liquid viscosity reaches 0.1-3.0 Pa.s.