CN115414182A - Hand-held type normal position dressing preparation facilities based on inner space electric field - Google Patents
Hand-held type normal position dressing preparation facilities based on inner space electric field Download PDFInfo
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- CN115414182A CN115414182A CN202211035108.5A CN202211035108A CN115414182A CN 115414182 A CN115414182 A CN 115414182A CN 202211035108 A CN202211035108 A CN 202211035108A CN 115414182 A CN115414182 A CN 115414182A
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- fairing
- electric field
- turbofan
- end handle
- spray head
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- 239000004973 liquid crystal related substance Substances 0.000 claims description 16
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- 230000004913 activation Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 11
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/00987—Apparatus or processes for manufacturing non-adhesive dressings or bandages
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0092—Electro-spinning characterised by the electro-spinning apparatus characterised by the electrical field, e.g. combined with a magnetic fields, using biased or alternating fields
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Vascular Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Manufacturing & Machinery (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a hand-held type in-situ dressing preparation device based on an internal space electric field, which comprises: a plurality of air guide channels are formed in one end of the fairing, which is opposite to the dressing end; a receiving ring is arranged on the side wall of the middle part of the fairing; the nozzle is arranged at the center of one end of the fairing, which is provided with the air guide channel; the turbofan is arranged at one end of the fairing close to the spray head; the front end handle is fixed at the bottom of the fairing; the rear end handle is arranged below the turbofan; the base is fixed at the bottom of the front end handle and the rear end handle; the material feed assembly includes: the device comprises an injector, a stepping screw motor, a clamping plate and a push plate; the injector is clamped in the clamping plate; the injection end of the injector is connected with the spray head, and the piston end is abutted with the push plate; the push plate is in threaded connection with a lead screw of the stepping lead screw motor; the anode of the high-voltage power supply is connected with the spray head through a wire, and the cathode of the high-voltage power supply is connected with the receiving ring through a wire. The dressing preparation device has the advantages of high forming speed, high forming uniformity and low dependence of the forming process on external environment.
Description
Technical Field
The invention relates to the technical field of dressing devices, in particular to a handheld in-situ dressing preparation device based on an internal space electric field.
Background
The skin is an important organ covering the surface of the human body, and has the functions of sensing external stimulation, adjusting the body temperature and protecting internal tissues from external injury. Skin also becomes one of the most vulnerable human tissues due to direct contact with the external environment. At present, various physicochemical methods are available for treating wounds in clinic, and among them, the dressing is one of the most common methods in clinical wound treatment.
The electrostatic spinning is a simple and effective method for preparing the micro-nano-scale fiber membrane with the controlled porous structure, and the membrane prepared by the technology has the characteristics of large specific surface area and high volume ratio, and has a microstructure similar to that of natural extracellular matrix. In addition, by changing the spinning process parameters and the spinning environment and using natural biological materials or synthetic polymer materials with specific functions in a matching way, the regulation and control of physicochemical properties such as fiber diameter, arrangement and orientation, film surface morphology characteristics, gas exchange performance, wettability and the like and biological properties such as cell adhesion, proliferation, migration and the like can be realized, and a microenvironment beneficial to tissue repair and regeneration is shaped, so that the dressing preparation by using electrostatic spinning is widely concerned and applied in the field of wound treatment. Nevertheless, it also faces the impaired deformation of surface characteristic appearance, the laminating nature is not strong, when facing different area wounds, individuation is not enough, the loaded down with trivial details processing time scheduling problem of process of wrapping in the acquisition process. The use of portable devices to directly shape a dressing in situ on a wound surface by electrospinning is a very promising approach to solve the above problems. The technology can directly deposit the film dressing with the micro-nano scale fiber structure on the wound surface in situ, so that a complex and tedious wrapping process is omitted, and characteristic damage and deformation possibly generated in film acquisition are avoided. Meanwhile, the method can be used for preparing the wound dressing in a customized manner according to the size of the wound on the treatment site, and has better use flexibility. However, the current portable electrospinning system still faces a challenge on how to improve the forming efficiency, and in addition, the current portable electrospinning system relies on a stable space electric field constructed between the apparatus and a collecting object outside the apparatus to ensure the formation of the electrospinning jet, however, humidity, wind speed, and external environmental conditions such as the potential relationship between the apparatus, the receiving object and a background object have great influence on the formation of the space electric field. The above challenges become a major bottleneck for restricting the further application of the technology in wound treatment, especially in emergency rescue, battlefield rescue and other scenes.
Therefore, it is an urgent need to solve the problems of the art to develop a handheld in-situ dressing preparation device based on an internal space electric field, which has a fast forming speed, a high forming uniformity and a low dependence of the forming process on the external environment.
Disclosure of Invention
In view of the above, the invention provides the handheld in-situ dressing preparation device based on the internal space electric field, which has the advantages of high forming speed, high forming uniformity and low dependence of a forming process on an external environment.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hand-held in situ dressing preparation device based on an internal space electric field, comprising:
the inner part of the fairing is hollow, and the dressing end is open; a plurality of air guide channels are formed in one end, opposite to the dressing end, of the fairing; a receiving ring is arranged on the side wall of the middle part of the fairing;
the spray head is arranged at the center of one end of the fairing, which is provided with the air guide channel;
the turbofan is arranged at one end, close to the spray head, of the fairing;
the front end handle is fixed at the bottom of the fairing and is close to one end of the spray head; the interior of the front end handle is hollow;
the rear end handle is arranged below the turbofan, and the interior of the rear end handle is hollow;
the base is fixed at the bottoms of the front-end handle and the rear-end handle; the interior of the base is hollow, and the front end handle and the rear end handle are communicated with the interior of the base;
a material feed assembly secured to an interior of the front handle; the material feed assembly includes: the device comprises an injector, a stepping screw motor, a clamping plate and a push plate; the clamping plate is fixedly connected with the inner wall of the front end handle, and the injector is clamped in the clamping plate; the injection end of the injector is connected with the spray head, and the piston end is abutted against the push plate; the push plate is in threaded connection with a lead screw of the stepping lead screw motor; the stepping screw rod motor is fixedly connected with the inner wall of the front end handle;
the high-voltage power supply is fixed inside the rear-end handle; the anode of the high-voltage power supply is connected with the spray head through a wire, and the cathode of the high-voltage power supply is connected with the receiving ring through a wire.
The technical scheme has the advantages that stable space electric field stretching materials can be built inside the fairing to form the electrospinning fiber jet flow, the lateral air flow supply can guide the air flow to deliver the electrospinning fibers to the wound surface for deposition, and the dressing with the micro-nano fiber structure can be built in situ; the device has the characteristics of high forming speed, high forming uniformity and low dependence of a forming process on an external environment, has a light structure, is simple and convenient to operate, can be carried by first-line rescue personnel or a platform, and realizes emergency treatment on the wound surface of a wounded; by using materials with the functions of bacteriostasis, hemostasis, antiphlogosis, repair promotion and the like, the treatment of wounds of different types, degrees and stages can be realized.
Preferably, an air duct is arranged at one end of the fairing, which is close to the rear-end handle, two ends of the air duct are open, and the turbofan is fixed inside the air duct; the air guide channel is communicated with the interior of the cylinder body; the rear end handle is arranged at the bottom of the air duct. The rear end of the fairing is provided with a turbofan, so that lateral airflow can be generated to change the jet flow direction of the electrospun fibers, and the electrospun fibers are guided to be sprayed out of the opening at the front end of the fairing.
Preferably, the bottom of the air duct is provided with a slide rail along the axis direction, the top of the rear end handle is provided with a slide block, and the slide rail is connected with the slide block in a sliding manner. The detachable connection of dryer and rear end handle makes things convenient for through gliding mode with dryer and radome fairing separation to change the shower nozzle.
Preferably, the rear end handle is far away from the top of one side of the front end handle, a stop block is connected in a sliding mode, the bottom of the stop block is connected with a spring, and the stop block abuts against the end portion of the air duct under the elastic force action of the spring. The position of dryer can be injectd to the dog, makes it closely be connected with the radome fairing, when needs change shower nozzle, pushes down the dog, makes the dog leave the tip of dryer, alright slide the dryer backward with the radome fairing separation.
Preferably, a filter screen is fixed inside the air duct and is arranged between the turbofan and the fairing. The front end of the turbofan is provided with a filter screen which can filter harmful substances such as dust, bacteria and the like in the air.
Preferably, the spray head and the fairing are connected in a transition fit manner; the surface of the spraying end of the spray head is an arc surface, the surface of the spraying end of the spray head is provided with a plurality of liquid outlet holes, and the liquid outlet holes are annularly arranged; one end of the spray head far away from the liquid outlet hole is connected with the injector through a guide pipe. The spray head is positioned in the center of the fairing and is connected with the anode of the high-voltage power supply through a wire, and the surface of the front end of the spray head is in an arc shape, so that the electric field interference among the spray heads can be reduced, and the distribution uniformity of an electric field is effectively improved; the fairing is fixed with the spray head by transition fit, so that the spray head can be rapidly assembled and disassembled conveniently.
Preferably, the side wall of the front end handle is provided with a mounting opening for mounting and dismounting the injector. The syringe is required to be replaced when the medicine is filled for use at each time, and the mounting port is convenient to mount and dismount the syringe.
Preferably, a liquid crystal display, a start button and a stop button are arranged on the surface of the rear handle. The liquid crystal display can display the current technological parameters, and the liquid crystal display is also provided with keys which can set the technological parameters.
Preferably, a battery and a controller are arranged inside the base; the battery, the liquid crystal display, the stepping screw motor, the turbofan, the high-voltage power supply, the start button and the stop button are all connected with the controller through leads; the liquid crystal display, the stepping screw motor and the turbofan are connected with the battery through leads. The battery may provide power to the controller, the liquid crystal display, the stepper screw motor, and the turbofan.
Preferably, an external power socket is arranged outside the base, and the external power socket is connected with the controller, the liquid crystal display, the stepping screw motor and the battery through leads. The external power outlet can be used for battery charging and can also be used as an external energy source of the device.
According to the technical scheme, compared with the prior art, the invention discloses a handheld in-situ dressing preparation device based on an internal space electric field, which has the beneficial effects that:
(1) According to the invention, the anode of the high-voltage power supply is connected with the spray head, the cathode is connected with the receiving ring, a space electric field can be formed in the fairing, an electrospun fiber jet can be directly formed in the fairing and can be sprayed out by lateral airflow, and the influence of the external environment is small; meanwhile, because the space electric field is built in the fairing, the potential relation among instruments, wound surfaces and background objects does not need to be considered when the space electric field is used, so that the operation is more convenient and faster, and the reliability is higher;
(2) By using the annular nozzle, a plurality of strands of electrospinning jet flow can be formed, and the fiber deposition amount in unit time is increased;
(3) The turbofan is adopted to replace an external air source, so that the volume and the weight of the system can be greatly reduced, and the portability is improved;
(4) The high-voltage power supply is arranged in the handle at the rear end, so that the use is safer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a cross-sectional interior view of a dressing apparatus provided by the present invention;
FIG. 2 is a schematic view of the present invention in an operating condition in which the dressing apparatus is not in a lateral air flow state;
fig. 3 is a schematic view of the operation of the dressing device provided by the present invention in the presence of a lateral air flow.
Wherein, in the figure, the position of the main body,
1-a fairing;
11-gas guide channel; 12-a receiving loop;
2-a spray head;
21-liquid outlet holes;
3-a turbofan; 4-a front handle; 5-rear end handle; 6-a base;
7-a material feeding assembly;
71-a syringe; 72-a stepping screw motor; 73-a splint; 74-a push plate;
8-a high voltage power supply;
9-an air duct;
91-a slide rail;
10-a block; 011-a spring; 012-filter screen; 013 — liquid crystal display; 014-start button; 015-stop button; 016-battery; 017-a controller; 018-external power supply socket.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the embodiment of the invention discloses a handheld in-situ dressing preparation device based on an internal space electric field, which comprises:
the inner part of the fairing 1 is hollow, and the dressing end is open; a plurality of air guide channels 11 are formed in one end, opposite to the dressing end, of the fairing 1; a receiving ring 12 is arranged on the side wall of the middle part of the fairing 1;
the nozzle 2 is arranged at the center of one end of the fairing 1, which is provided with the air guide channel 11;
the turbofan 3, the turbofan 3 is set up in the fairing 1 near one end of the shower nozzle 2;
the front-end handle 4 is fixed at the bottom of the fairing 1 and is close to one end of the spray head 2; the front end handle 4 is hollow inside;
a rear end handle 5, the rear end handle 5 being disposed below the turbofan 3, the rear end handle 5 being hollow inside;
the base 6 is fixed at the bottoms of the front end handle 4 and the rear end handle 5; the interior of the base 6 is hollow, and the front end handle 4 and the rear end handle 5 are communicated with the interior of the base 6;
a material feeding assembly 7, wherein the material feeding assembly 7 is fixed inside the front end handle 4; the material feeding assembly 7 comprises: an injector 71, a stepping screw motor 72, a clamping plate 73 and a push plate 74; the clamping plate 73 is fixedly connected with the inner wall of the front end handle 4, and the injector 71 is clamped in the clamping plate 73; the injection end of the injector 71 is connected with the spray head 2, and the piston end is abutted with the push plate 74; the push plate 74 is in threaded connection with a lead screw of the stepping lead screw motor 72; the stepping screw motor 72 is fixedly connected with the inner wall of the front end handle 4;
the high-voltage power supply 8 is fixed inside the rear-end handle 5; the anode of the high-voltage power supply 8 is connected with the spray head 2 through a lead, and the cathode is connected with the receiving ring 12 through a lead. The high-voltage power supply 8 constructs a space electric field stretching material between the spray head 2 and the receiving ring 12 so as to form an electrospinning fiber jet flow, the jet flow moves towards the opening of the fairing 1 under the driving of lateral airflow formed by the turbofan 3 and is sprayed out, and a fiber film structure dressing is formed at the wound surface part at a high speed. The spray head 2 and the injector 71 need to be replaced after each use of the material at the spray. The screw rod end of the stepping screw rod motor 72 extends into the base 6, and the screw rod end of the stepping screw rod motor 72 is rotatably connected with the inside of the base 6. The stepping screw motor 72 can drive the push plate 74 to apply a feeding force to the piston of the injector 71 through the self-rotation movement, so as to push the material to enter the spray head 2 from the injector 71.
In order to further optimize the technical scheme, an air duct 9 is arranged at one end, close to the rear-end handle 5, of the fairing 1, two ends of the air duct 9 are open, and the turbofan 3 is fixed inside the air duct 9; the air guide channel 11 is communicated with the inside of the cylinder 9; the rear end handle 5 is arranged at the bottom of the air duct 9.
In order to further optimize the technical scheme, the bottom of the air duct 9 is provided with a slide rail 91 along the axis direction, the top of the rear-end handle 5 is provided with a slide block, and the slide rail 91 is connected with the slide block in a sliding manner.
In order to further optimize the technical scheme, a stop block 10 is connected to the top of the rear end handle 5 far away from the front end handle 4 in a sliding manner, a spring 011 is connected to the bottom of the stop block 10, and the stop block 10 abuts against the end of the air duct 9 under the action of the elastic force of the spring 011. The bottom of the spring 011 is fixed with a fixed plate which is fixed with the rear end handle 5, so that the elasticity of the spring 011 is ensured to be along the moving direction of the stop block 10. The stopper 10 and the rear handle 5 may be slid by a slide rail or a slider.
In order to further optimize the above technical solution, a filter 012 is fixed inside the wind tunnel 9, and the filter 012 is disposed between the turbofan 3 and the cowling 1.
In order to further optimize the technical scheme, the spray head 2 and the fairing 1 adopt a transition fit connection mode; the surface of the spraying end of the spray head 2 is a circular arc surface, the surface of the spraying end of the spray head 2 is provided with a plurality of liquid outlet holes 21, and the liquid outlet holes 21 are annularly arranged; the end of the spray head 2 far away from the liquid outlet 21 is connected with the injector 71 through a conduit.
In order to further optimize the technical scheme, a mounting opening for mounting and dismounting the injector 71 is formed in the side wall of the front-end handle 4.
In order to further optimize the above technical means, a liquid crystal display 013, an activation button 014 and a stop button 015 are provided on the surface of the rear end handle 5. The start button 014 and the stop button 015 respectively have two working modes of long pressing and short pressing, the long pressing of the start button 014 causes the push plate 74 to fast forward, the short pressing causes the push plate 74 to carry out corresponding feeding movement according to set parameters, and simultaneously, the high-voltage power supply 8 and the turbofan 3 are started; when the stop button 015 is pressed for a long time, the push plate 74 moves back quickly, and when the stop button is pressed for a short time, the push plate 74 stops the feeding movement, and the high-voltage power supply 8 and the turbofan 3 are turned off.
In order to further optimize the technical scheme, a battery 016 and a controller 017 are arranged in the base 6; the battery 016, the liquid crystal display 013, the stepping screw motor 72, the turbofan 3, the high-voltage power supply 8, the start button 014 and the stop button 015 are all connected with the controller 017 through wires; the liquid crystal display 013, the stepping screw motor 72 and the uniform battery 016 of the turbofan 3 are connected through a lead wire. The controller 017 consists of a system board, a PWM voltage regulating module and a motor driving board and is used for controlling the start, stop and operation of the stepping screw rod motor 72 and the turbofan 3, and adjusting the output voltage of the high-voltage power supply 8 and the rotating speed of the turbofan 3.
In order to further optimize the above technical solution, an external power socket 018 is disposed outside the base 6, and the external power socket 018 is connected with the controller 017, the liquid crystal display 013, the stepping screw motor 72 and the battery 016 through wires.
The working process is as follows:
when the device is used, the stop block 10 is pressed down, the turbofan 3 is withdrawn, the nozzle 2 is arranged in the fairing 1, and the turbofan 3 is pushed forwards to be folded with the fairing 1; the syringe 71 loaded with the electrospun material is loaded into a clamping plate 73 in the material feeding assembly 7 and connected with the nozzle 2 conduit; checking and setting system process parameters to enable the system process parameters to correspond to the process requirements of the loaded materials; long-pressing the start button 014, the push plate 74 fast-forwards, pushing the injector 71 material into the spray head 2; then releasing a start button 014, aligning the front end opening of the fairing 1 to a wound surface part needing to be treated, pressing the start button 014 for a short time, driving a push plate 74 to extrude a material according to a preset working speed by a stepping lead screw motor 72 in a material feeding assembly 7, starting a high-voltage power supply 7 and a turbofan 3 at the same time, constructing a space electric field stretching material between a spray head 2 and a receiving ring 12 by the high-voltage power supply 8 so as to form an electrospinning fiber jet flow, driving the jet flow to move towards the opening of the fairing 1 under the drive of lateral airflow formed by the turbofan 3 and spraying the jet flow, and forming a fiber film structure dressing at the wound surface part at a high speed; after the in-situ preparation of the dressing is completed, the stop button 015 is pressed for a short time, the feeding of the material is stopped, the high-voltage power supply 8 is cut off, the turbofan 3 is turned off at the same time, finally, the stop button 015 is pressed for a long time, the push plate 74 retracts quickly, the stop block 10 is pressed, the turbofan 3 is withdrawn, and the injector 71 and the spray head 2 are taken out.
Example 2:
polyvinyl butyral (PVB) was dissolved in an absolute ethanol solution and stirred at room temperature for 4 hours to prepare an 8% (w/v) PVB solution. The above solution was added to syringe 71. Setting the output voltage of a high-voltage power supply 8 to be 12kV, the feeding speed to be 10mL/h and the input voltage of the vortex fan 3 to be 12V; pressing the stop block 10, withdrawing the turbofan 3, loading the spray head 2 into the fairing 1, and pushing the turbofan 3 forwards to enable the turbofan to be folded with the fairing 1; the syringe 71 loaded with the PVB solution is loaded into a clamping plate 73 in the material feeding assembly 7 and connected to the nozzle 2; checking and setting system process parameters to enable the system process parameters to correspond to the process requirements of the loaded materials; by pushing actuation button 014 a long time, push plate 74 is fast-forwarded, pushing syringe 71 material into spray head 2. Then releasing a start button 014, aligning the front end opening of the fairing 1 to a wound surface part needing to be treated, pressing the start button 014 for a short time, driving a push plate 74 to extrude a material according to a preset working speed by a stepping screw motor 72 in a material feeding assembly 7, starting a high-voltage power supply 8 and a turbofan 3 at the same time, constructing a space electric field stretching material between a spray head 2 and a receiving ring 12 by the high-voltage power supply 8 so as to form an electrospinning fiber jet flow, driving the jet flow to move towards the opening of the fairing 1 under the drive of lateral airflow formed by the turbofan 3 and spraying out, and forming a fiber film structure dressing at the wound surface part at a high speed; after the in-situ preparation of the dressing is finished, the stop button 015 is pressed for a short time to stop the feeding of the material, the supply of the high-voltage power supply 8 is cut off, the turbofan 3 is turned off, finally, the stop button 015 is pressed for a long time, the push plate 74 is quickly retreated, the stop block 10 is pressed, the turbofan 3 is retreated, and the injector 71 and the spray head 2 are taken out.
Other technical solutions in this embodiment are the same as those in embodiment 1, and are not described in detail here.
Example 3:
polyvinyl alcohol (PVA) was added to deionized water and stirred at 80 ℃ for 2 hours to prepare a 7.5% (w/v) PVA solution, which was then added to syringe 71 after cooling to room temperature. Setting the output voltage of a high-voltage power supply 8 to be 12kV, the feeding speed to be 3mL/h and the input voltage of a turbo fan 3 to be 12V; pressing the stop block 10, withdrawing the turbofan 3, loading the spray head 2 into the fairing 1, and pushing the turbofan 3 forwards to enable the turbofan to be folded with the fairing 1; the syringe 71 loaded with the PVA solution is loaded into a clamping plate 73 in the material feeding assembly 7 and connected to the pipe of the shower head 2; checking and setting system process parameters to enable the system process parameters to correspond to the process requirements of the loaded materials; by pushing actuation button 014 a long time, push plate 74 is fast-forwarded, pushing syringe 71 material into spray head 2. Then releasing a start button 014, aligning the front end opening of the fairing 1 to a wound surface part needing to be treated, pressing the start button 014 for a short time, driving a push plate 74 to extrude a material according to a preset working speed by a stepping screw motor 72 in a material feeding assembly 7, starting a high-voltage power supply 8 and a turbofan 3 at the same time, constructing a space electric field stretching material between a spray head 2 and a receiving ring 12 by the high-voltage power supply 8 so as to form an electrospinning fiber jet flow, driving the jet flow to move towards the opening of the fairing 1 under the drive of lateral airflow formed by the turbofan 3 and spraying out, and forming a fiber film structure dressing at the wound surface part at a high speed; after the in-situ preparation of the dressing is completed, the stop button 015 is pressed for a short time, the feeding of the material is stopped, the high-voltage power supply 8 is cut off, the turbofan 3 is turned off at the same time, finally, the stop button 015 is pressed for a long time, the push plate 74 retracts quickly, the stop block 10 is pressed, the turbofan 3 is withdrawn, and the injector 71 and the spray head 2 are taken out.
Other technical solutions in this embodiment are the same as those in embodiment 1, and are not described in detail here.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A hand-held type normal position dressing preparation facilities based on inner space electric field which characterized in that includes:
the inner part of the fairing (1) is hollow, and the dressing end is open; a plurality of air guide channels (11) are formed in one end, opposite to the dressing end, of the fairing (1); a receiving ring (12) is arranged on the side wall of the middle part of the fairing (1);
the spray head (2) is arranged at the center of one end, provided with an air guide channel (11), of the fairing (1);
the turbofan (3), the turbofan (3) is arranged at one end of the fairing (1) close to the spray head (2);
the front-end handle (4), the front-end handle (4) is fixed at the bottom of the fairing (1) and is close to one end of the spray head (2); the interior of the front end handle (4) is hollow;
the rear end handle (5), the rear end handle (5) is arranged below the turbofan (3), and the interior of the rear end handle (5) is hollow;
the base (6), the said base (6) is fixed to the bottom of said front end hand grip (4) and rear end hand grip (5); the interior of the base (6) is hollow, and the front-end handle (4) and the rear-end handle (5) are communicated with the interior of the base (6);
a material feeding assembly (7), wherein the material feeding assembly (7) is fixed inside the front end handle (4); the material feeding assembly (7) comprises: the device comprises an injector (71), a stepping screw motor (72), a clamping plate (73) and a push plate (74); the clamping plate (73) is fixedly connected with the inner wall of the front end handle (4), and the injector (71) is clamped in the clamping plate (73); the injection end of the injector (71) is connected with the spray head (2), and the piston end is abutted against the push plate (74); the push plate (74) is in threaded connection with a lead screw of the stepping lead screw motor (72); the stepping screw rod motor (72) is fixedly connected with the inner wall of the front end handle (4);
the high-voltage power supply (8), the said high-voltage power supply (8) is fixed in the inside of the said back end hand grip (5); the anode of the high-voltage power supply (8) is connected with the spray head (2) through a wire, and the cathode of the high-voltage power supply is connected with the receiving ring (12) through a wire.
2. The hand-held in-situ dressing preparation device based on the internal space electric field is characterized in that an air duct (9) is arranged at one end, close to the rear-end handle (5), of the fairing (1), the two ends of the air duct (9) are open, and the turbofan (3) is fixed inside the air duct (9); the air guide channel (11) is communicated with the inside of the cylinder body (9); the rear end handle (5) is arranged at the bottom of the air duct (9).
3. The hand-held type in-situ dressing preparation device based on the inner space electric field is characterized in that a slide rail (91) is arranged at the bottom of the air duct (9) along the axis direction of the air duct, a slide block is arranged at the top of the rear end handle (5), and the slide rail (91) is connected with the slide block in a sliding manner.
4. The hand-held type in-situ dressing preparation device based on the inner space electric field is characterized in that the top of one side, away from the front end handle (4), of the rear end handle (5) is slidably connected with a stop block (10), the bottom of the stop block (10) is connected with a spring (011), and the stop block abuts against the end part of the air duct (9) under the elastic force action of the spring (011).
5. The hand-held in-situ dressing preparation device based on the inner space electric field is characterized in that a filter screen (012) is fixed inside the air duct (9), and the filter screen (012) is arranged between the turbofan (3) and the fairing (1).
6. The hand-held in-situ dressing preparation device based on the internal space electric field is characterized in that the spray head (2) and the fairing (1) adopt a transition fit connection mode; the surface of the spraying end of the sprayer (2) is an arc surface, the surface of the spraying end of the sprayer (2) is provided with a plurality of liquid outlet holes (21), and the liquid outlet holes (21) are annularly arranged; one end of the spray head (2) far away from the liquid outlet hole (21) is connected with the injector (71) through a guide pipe.
7. The hand-held in-situ dressing preparation device based on the internal space electric field as claimed in claim 6, wherein a mounting opening for assembling and disassembling the injector (71) is opened at the side wall of the front-end handle (4).
8. The hand-held in-situ dressing preparation device based on the electric field in the internal space is characterized in that a liquid crystal display (013), an activation button (014) and a stop button (015) are arranged on the surface of the rear handle (5).
9. The hand-held in-situ dressing preparation device based on electric field of internal space as claimed in claim 8, wherein said base (6) is internally provided with a battery (016) and a controller (017); the battery (016), the liquid crystal display (013), the stepping screw motor (72), the turbofan (3), the high-voltage power supply (8), the start button (014) and the stop button (015) are all connected with the controller (017) through wires; the liquid crystal display (013), the stepping screw rod motor (72) and the turbofan (3) are connected with the battery (016) through leads.
10. The hand-held in-situ dressing preparation device based on the electric field in the inner space of claim 9 is characterized in that an external power socket (018) is arranged on the outer portion of the base (6), and the external power socket (018) is connected with the controller (017), the liquid crystal display (013), the stepping screw motor (72) and the battery (016) through conducting wires.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211035108.5A CN115414182A (en) | 2022-08-26 | 2022-08-26 | Hand-held type normal position dressing preparation facilities based on inner space electric field |
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| CN202211035108.5A CN115414182A (en) | 2022-08-26 | 2022-08-26 | Hand-held type normal position dressing preparation facilities based on inner space electric field |
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Application publication date: 20221202 |