Skin traction device for emergency surgeryTechnical Field
The invention relates to the technical field of skin traction devices, in particular to a skin traction device for emergency surgery.
Background
In emergency surgery, skin traction devices are key instruments for exposing a surgical wound surface and assisting operation of a surgical field, however, the following significant defects exist in the prior art:
1. The manual adjustment efficiency is low, the traction force is uneven, the traditional device depends on manual operation positioning and traction angle adjustment, and a real-time wound state feedback mechanism is lacked, so that the preparation time is long before operation, the manual traction is easy to cause local tissue secondary damage due to uneven force, and the traction direction is difficult to accurately adapt particularly in complex wound surfaces;
2. the space freedom degree is limited, the existing equipment mostly adopts a rigid fixed structure, and three-dimensional space multi-degree-of-freedom adjustment cannot be realized, for example, when chest and abdomen joint wounds are treated, the traction device is difficult to synchronously adjust the pitching angle and the horizontal displacement, so that the exposure of the operation field is insufficient, and the operation difficulty is increased;
3. The traditional traction frame and the negative pressure adsorption component are connected by threads or buckles and are fixed, the disassembly and assembly take more than 30 seconds, parts are easy to pollute due to repeated operation, and the design obviously increases the risk of cross infection in polluted wounds such as open fracture;
4. the traction precision and the response speed are insufficient, the conventional traction wire retracting mechanism is controlled by adopting a gear rack or a manual knob, the adjusting precision is only in millimeter level, and the device cannot dynamically adapt to the position change of a patient in operation, for example, in a facial repair operation, the manual fine adjustment error easily causes uneven skin tension distribution, and the postoperative healing is affected;
5. The adhesive tape is difficult to detach and has high damage risk, the traditional adhesive tape depends on mechanical peeling, the peeling strength is slow to decay, skin tearing or colloid residue is easy to cause, and statistics shows that about 25% of postoperative patients have skin damage due to improper detachment of the adhesive tape;
6. The existing technology lacks a dynamic traction force monitoring mechanism, a real-time force feedback system is not integrated, traction overload cannot be early warned, and when a patient moves suddenly in operation, the device can tear skin due to instantaneous tension surge, so that iatrogenic injury is caused;
7. The false alarm rate of the sensor is high, and part of devices adopting strain gauges or pressure sensors are easily interfered by environmental temperature and humidity, and the false alarm rate is as high as 15%, for example, in a high-humidity operation environment, signal drift can cause false triggering protection mechanisms to interfere with the operation process;
Based on the above, the present invention provides a skin traction device for emergency surgery, so as to solve the technical problems set forth in the background art.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a skin traction device for emergency surgery, according to the invention, a dynamic protection system is innovatively constructed by integrating the high-precision tension sensor and the buffer bag conductive fluid monitoring system, and the tension sensor acquires traction force data in real time.
The skin traction device for emergency surgery comprises a free arm, wherein a vision acquisition probe is arranged on the free arm, and two traction mechanisms are arranged on the free arm;
The traction mechanism comprises a rotatable swing frame, a movable arm is arranged on the swing frame, a plurality of functional surfaces distributed in a circumferential array are arranged on the movable arm, a group of regularly distributed positioning pipes are arranged on each functional surface, and a locking knob is arranged on each positioning pipe in a threaded manner;
The traction device comprises a traction frame, a plurality of negative pressure pipes, a traction wire, a regulating arm, a first linear transmission module, two wire rollers, a magic pulling paste, a traction wire sensor, a magic pulling paste and a bonding belt, wherein the traction frame and the negative pressure pipes are connected with the positioning pipes through quick connecting mechanisms, the winding roller driven by a first motor is rotatably arranged on the traction frame, the traction wire is wound on the winding roller, the regulating arm is slidably arranged on the traction frame, the first linear transmission module is arranged on the traction frame and is in transmission connection with the regulating arm, the rotatable corner block is arranged on the regulating arm, the two wire rollers are rotatably arranged on the corner block, the magic pulling paste is arranged at the end part of the traction wire, the connecting part of the traction wire and the magic pulling paste is provided with the traction sensor, the magic pulling paste is internally provided with an electric heating block, the bottom of the magic pulling paste is bonded with a buffer bag, and the bottom surface of the buffer bag is fixedly provided with the bonding belt.
As a preferred technical scheme of the invention, the visual acquisition device further comprises a support frame, wherein a movable arm is hinged to the support frame, the front end of the movable arm is hinged to the free arm, a group of arm adjusting push rods are hinged between the movable arm and the support frame and between the free arm and the movable arm, a display screen is rotatably arranged at the top of the support frame, an electric cabinet electrically connected with the display screen is arranged on the side surface of the support frame, a single chip microcomputer and a storage battery are integrally arranged in the electric cabinet, the single chip microcomputer is powered by the storage battery, and the data ends of the visual acquisition probe and the display screen are connected with the single chip microcomputer in a data mode.
As a preferable technical scheme of the invention, the swing frame is hinged on the free arm, an electric push rod is hinged between the free arm and the swing frame, a second linear transmission module is arranged on the swing frame, the second linear transmission module is in transmission connection with the movable arm, and the movable arm is slidably arranged on the swing frame.
As a preferable technical scheme of the invention, the quick connecting mechanism comprises a quick connecting rod which is connected to the positioning pipe in a sliding way, the cross section of the quick connecting rod is in an inverted T shape, the top end of the quick connecting rod is provided with a magnetic plate, the magnetic plate is square, and clamping grooves which are clamped with the magnetic plate are formed in the traction frame and the negative pressure pipe.
As a preferable technical scheme of the invention, a first worm is fixedly arranged at the output shaft end of the first motor, a first gear is arranged at the top of the wire winding roller, the first worm is in transmission connection with the first gear, a second gear is arranged on the corner block, a second motor is arranged on the adjusting arm, and a second worm in transmission connection with the second gear is fixedly arranged at the output shaft end of the second motor.
According to the preferred technical scheme, a hook surface of the magic tape is fixedly arranged on the bottom surface of the magic tape, a magic tape rough surface which is in bonding fit with the hook surface of the magic tape is fixedly arranged on the top surface of the buffer bag, the buffer bag is made of flexible conductive elastic materials, conductive fluid is filled in the buffer bag, the conductive fluid is mixed suspension of liquid metal, ionic liquid and nano silicon dioxide, and two ends of the conductive fluid are electrically connected with the single chip microcomputer through embedded electrodes.
As a preferable technical scheme of the invention, the resistance change signal of the conductive fluid and the deformation quantity of the buffer bag are in a nonlinear relation, the singlechip is internally provided with a self-adaptive filtering algorithm, the singlechip acquires the resistance change signal of the conductive fluid in real time, calculates the real-time deformation quantity of the buffer bag according to a preset deformation resistance relation model, generates a first control instruction to adjust the heating power of the electric heating block when the real-time deformation quantity exceeds a first threshold value, generates a second control instruction to trigger an overload alarm signal of the tension sensor when the real-time deformation quantity exceeds a second threshold value, and is internally provided with a temperature compensation algorithm to inhibit the interference of environment temperature and humidity on the resistance signal of the conductive fluid.
As a preferable technical scheme of the invention, the adhesive tape comprises a flexible substrate layer and an adhesive layer which are sequentially connected from outside to inside, wherein the flexible substrate layer is connected with a buffer bag through a hot pressing process, the flexible substrate layer is made of organic silicon rubber, the thickness of the flexible substrate layer is 0.2mm to 0.5mm, the adhesive layer is a heat-activated pressure-sensitive adhesive, the thickness of the adhesive layer is 0.05mm to 0.15mm, and the peeling strength attenuation rate of the adhesive layer in a range of 40 ℃ to 60 ℃ is more than or equal to 50%.
As a preferable technical scheme of the invention, the traction wire is formed by spirally winding ultra-high molecular weight polyethylene fibers and nickel-titanium alloy wires, the diameter of monofilaments is 0.3mm to 0.8mm, and the outer diameter of the traction wire is 1.2+/-0.1 mm.
As a preferable technical scheme of the invention, the negative pressure locking mechanism comprises a negative pressure sucker which is in sliding communication with a negative pressure pipe, a negative pressure pump is arranged on the negative pressure pipe, a negative pressure port of the negative pressure pump is communicated with the negative pressure pipe, and a limiting spring is arranged between the negative pressure pipe and the negative pressure sucker.
Compared with the prior art, the invention has the following beneficial effects:
1. The traditional skin traction device is easy to cause iatrogenic damage such as skin tearing when a patient suddenly moves or is in traction overload due to lack of a real-time force feedback mechanism, a dynamic protection system is innovatively built by integrating the high-precision tension sensor and the buffer bag conductive fluid monitoring system, the tension sensor collects traction force data in real time, the liquid metal filled in the buffer bag and the ionic liquid are mixed with conductive fluid, the resistance change and the deformation quantity of the liquid metal and the ionic liquid are in a nonlinear relation, the self-adaptive filtering algorithm and the temperature compensation technology arranged in the singlechip are combined, the false alarm rate caused by environmental interference is reduced to be less than 1%, the system adopts a double-threshold control strategy, when the deformation quantity exceeds a first threshold, the electric heating block is heated to 50 ℃ within 0.5 seconds, the thermal activation pressure-sensitive adhesive layer is softened to reduce the bonding strength, and when the deformation quantity exceeds a second threshold, overload alarm is immediately triggered and traction is stopped.
2. Aiming at the problem that the rigid structure of the traditional traction device cannot be adapted to a complex wound surface, the invention realizes three-dimensional space regulation and control with millimeter precision through the multi-axis linkage mechanical structure, the free arm is hinged with the swing frame through the electric push rod, the movable arm is driven to slide along the swing frame by matching with the second linear transmission module, the arc-shaped or asymmetric wound surface can be quickly adapted, the support frame and the movable arm realize pitching and rotating multi-degree-of-freedom regulation through the arm regulating push rod, and the real-time operation field image navigation of the vision acquisition probe and the display screen is combined, so that the traction direction is vertical to the wound surface, the operation field exposure efficiency is improved, the regulation precision of the system is improved by one order of magnitude compared with the traditional manual operation, and the system is particularly suitable for scenes with extremely high requirements on traction uniformity, such as facial repair.
3. The traditional traction device has the advantages that the traditional traction device is complicated in disassembly and assembly and easy to pollute due to the fact that cross infection risks are prominent in pollution wound operations such as open fracture and the like, the reverse T-shaped quick connecting rod and the magnetic suction plate clamping groove are in modularized design, so that second-level disassembly and assembly of 'one touch lock' is realized, the circumferential array layout of the positioning tube supports multi-angle functional surface switching, the traction frame and the negative pressure tube can be quickly replaced, a traction strategy can be immediately adjusted in operation, the magnetic suction connection mode is used for avoiding mechanical abrasion of threads or buckles, pollution risks are reduced, operation efficiency is improved, and the harsh requirement of a gold treatment period of emergency operation on timeliness is fully met.
4. The traditional adhesive tape relies on mechanical stripping to easily cause skin damage, the pain is thoroughly solved by material innovation and intelligent heating technology, the adhesive tape adopts a composite structure of an organic silicon rubber flexible substrate layer with the thickness of 0.2mm and a heat-activated pressure-sensitive adhesive, the stripping strength attenuation of an adhesive layer is more than or equal to 50 percent at the temperature of 40-60 ℃, heating is triggered by an electric heating block in operation, the adhesive layer is softened within 3 seconds to realize painless disassembly, the stripping damage rate is reduced, a buffer bag further disperses traction stress, edge degumming caused by local pressure concentration is avoided, the adhesive residue is eliminated, the post-operation treatment time is obviously shortened, and the adhesive tape accords with the concept of minimally invasive surgery.
5. Aiming at the defects that the traditional metal traction wire is easy to fatigue fracture and the ductility of a nylon wire is too high, the invention provides the composite traction wire spirally wound by the ultra-high molecular weight polyethylene fiber and the nickel-titanium alloy wire, the tensile strength of the traction wire is more than 200N, the service life of the traction wire reaches 105 times of cycles, the nickel-titanium alloy wire is reduced by 60 percent compared with the pure metal wire, the nickel-titanium alloy wire has shape memory property, the linear state is automatically restored after bending, the worm gear transmission system realizes millimeter-level retraction precision, the multi-angle adjustment of a wire roller ensures the accurate adaptation of the traction direction to the wound surface shape, the bending resistance performance of the system in dynamic traction scenes such as limb joints is improved, and the reliability bottleneck of the traditional traction wire is solved.
6. The invention realizes the whole-domain stable control through negative pressure adsorption and elastic limit design, the negative pressure sucker elastically adsorbs skin in a non-traction area through a limit spring, the negative pressure pump provides constant negative pressure of-80 kPa, the anti-interference capability is extremely strong, the system and a traction mechanism cooperatively form an active traction-passive fixation double mode, the stability of the device is improved, the device is particularly suitable for operation of fat patients or skin relaxation parts, and experiments show that when the body position of the patient changes, the negative pressure adsorption force can offset more than 80% of displacement interference, so that the operation field is ensured to be continuously clear.
Drawings
FIG. 1 is a schematic view of a skin pulling device for emergency surgery according to the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective in accordance with the present invention;
FIG. 3 is a schematic view of the structure of the moving arm and positioning tube of the present invention;
FIG. 4 is a schematic diagram of a second motor and a traction frame of the present invention;
FIG. 5 is a schematic view of the structure of the quick connect rod and the first worm of the present invention;
FIG. 6 is a schematic diagram of the structure of the tension sensor and the electric heating block of the present invention;
FIG. 7 is a schematic view of the hook face and adhesive tape construction of the present invention;
FIG. 8 is a schematic view of the structure of the magic tape and the electric heating block of the present invention;
FIG. 9 is a schematic view of the positioning tube and magnetic plate of the present invention;
fig. 10 is a schematic view of the structure of the negative pressure pipe and the negative pressure pump of the present invention.
The device comprises a free arm, a visual acquisition probe, a swing frame, a moving arm, a 5-locating tube, a 6-locking knob, a 7-pulling frame, a 8-negative pressure tube, a 9-first motor, a 10-winding roller, a 11-pulling wire, a 12-adjusting arm, a 13-first linear transmission module, a 14-corner block, a 15-second linear transmission roller, a 16-magic pull paste, a 17-pulling force sensor, a 18-electric heating block, a 19-buffering bag, a 20-bonding belt, a 21-supporting frame, a 22-moving arm, a 23-adjusting arm push rod, a 24-display screen, a 25-electric control box, a 26-second linear transmission module, a 27-electric push rod, a 28-quick connecting rod, a 29-magnetic attraction plate, a 30-first worm, a 31-first gear, a 32-second gear, a 33-second motor, a 34-second worm, a 35-magic hook surface, a 36-magic-sticking surface, a 37-negative pressure, a 38-negative pressure pump, a 39-limiting spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 10, the invention provides a skin traction device for emergency surgery, which comprises a free arm 1, wherein a vision acquisition probe 2 is arranged on the free arm 1, and two traction mechanisms are arranged on the free arm 1;
the traction mechanism comprises a rotatable swing frame 3, and a movable moving arm 4 is arranged on the swing frame 3;
The swing frame 3 is hinged on the free arm 1, an electric push rod 27 is hinged between the free arm 1 and the swing frame 3, a second linear transmission module 26 is mounted on the swing frame 3, the second linear transmission module 26 is in transmission connection with the movable arm 4, and the movable arm 4 is slidably mounted on the swing frame 3.
According to the scheme, through the cooperative design of the visual acquisition probe 2 on the free arm 1 and the two traction mechanisms, the pain point that the traditional operation traction device depends on manual adjustment and cannot monitor the wound state in real time is solved;
In emergency surgery, the vision acquisition probe 2 captures a wound image in real time and transmits the image to the display screen 24, and the swing frame 3, the movable arm 4 and the circumferential array distribution of the positioning tube 5 of the traction mechanism are combined, so that different wound shapes and traction angles can be quickly adapted, for example, in an abdominal open wound, the movable arm 4 slides along the swing frame 3 through the second linear transmission module 26, the traction frame 7 is accurately positioned to the wound edge, a stable supporting point is formed after the locking knob 6 is locked by threads, the traction wire 11 is retracted through the wire winding roller 10, the dynamic adjustment of skin tension is realized, the pre-operation preparation time is obviously shortened, and the secondary damage risk caused by uneven traction force is reduced;
the movable arm 4 is provided with a plurality of functional surfaces distributed in a circumferential array, each functional surface is provided with a group of locating pipes 5 distributed regularly, and each locating pipe 5 is provided with a locking knob 6 in a threaded manner;
The device also comprises a plurality of traction frames 7 and a plurality of negative pressure pipes 8, wherein each traction frame 7 and each negative pressure pipe 8 are connected with the positioning pipe 5 through a quick connecting mechanism;
the quick connecting mechanism comprises a quick connecting rod 28 which is connected to the positioning pipe 5 in a sliding manner, the cross section of the quick connecting rod 28 is in an inverted T shape, the top end of the quick connecting rod 28 is provided with a magnetic suction plate 29, the magnetic suction plate 29 is square, and clamping grooves which are clamped with the magnetic suction plate 29 are formed in the traction frame 7 and the negative pressure pipe 8.
The hinge structure of the support frame 21 and the movable arm 22 is matched with the arm adjusting push rod 23, so that the problem that the traditional traction equipment cannot be adjusted in multiple degrees of freedom is solved, under an emergency scene, a medical staff controls the arm adjusting push rod 23 to stretch and retract through the electric cabinet 25, the movable arm 22 is driven to rotate around the hinge point of the support frame 21, meanwhile, the free arm 1 is synchronously pitching along with the movable arm 22, three-dimensional space positioning of the traction mechanism is realized, for example, in a chest penetration surgery, the traction state is displayed on the display screen 24 in real time, the medical staff adjusts the angle of the free arm 1 through touch operation, the traction wire 11 is vertical to a wound surface, uniform traction is ensured, and in addition, the integrated electric cabinet 25 and a storage battery are designed, so that the limitation of a wired power supply is eliminated, and the three-dimensional positioning traction mechanism is particularly suitable for field emergency or mobile surgery scenes;
The articulated design of the swing frame 3 and the free arm 1 is combined with the second linear transmission module 26, so that the problem of poor adaptability to wounds caused by rigid fixation of a traction mechanism is solved, the swing frame 3 adjusts an included angle with the free arm 1 through the arm adjusting push rod 23, and when the movable arm 4 slides along the guide rail of the swing frame 3, the second linear transmission module 26 provides high-precision displacement control, and in complex limb wounds, the movable arm 4 can be quickly switched to different functional surfaces to adapt to arc-shaped or asymmetric wounds;
The inverted T-shaped quick connecting rod 28 and the magnetic suction plate 29 of the connecting assembly are designed to solve the problems of complex disassembly and easy pollution of the traditional connection mode, in emergency surgery, the traction frame 7 and the negative pressure pipe 8 are quickly clamped into the clamping groove of the positioning pipe 5 through the magnetic suction plate 29, the inverted T-shaped section is prevented from sliding off transversely, for example, when pollution wounds are treated, the negative pressure pipe 8 is replaced instantly through a quick connection mechanism, cross infection is avoided, compared with a threaded or clamping mode, the operation time is reduced by 80 percent, and the method is particularly suitable for emergency situations such as massive hemorrhage;
a wire winding roller 10 driven by a first motor 9 is rotatably arranged on the traction frame 7, a first worm 30 is fixedly arranged at the output shaft end of the first motor 9, a first gear 31 is arranged at the top of the wire winding roller 10, and the first worm 30 is in transmission connection with the first gear 31;
The worm gear transmission system and the double-motor driving design solve the problem that the retraction speed and the precision of the traction wire 11 are difficult to consider, the first motor 9 drives the worm to drive the gear of the wire winding roller 10, the accurate retraction of the traction wire 11 millimeter level is realized, the second motor 33 adjusts the second gear 32 of the corner block 14 through the worm, the rotation angle of the wire winding roller 15 is controlled, and the system can synchronously adjust the length and the traction direction of the traction wire 11 during the fine adjustment of the skin tension, such as facial repair surgery, so that the uniform tension distribution is ensured, and the local overload caused by the traditional manual adjustment is avoided;
The wire winding roller 10 is wound with a traction wire 11, the traction frame 7 is slidably provided with an adjusting arm 12, the traction frame 7 is provided with a first linear transmission module 13, the first linear transmission module 13 is in transmission connection with the adjusting arm 12, the adjusting arm 12 is provided with a rotatable corner block 14, the corner block 14 is provided with a second gear 32, the adjusting arm 12 is provided with a second motor 33, and the output shaft end of the second motor 33 is fixedly provided with a second worm 34 in transmission connection with the second gear 32.
Two wire guide rollers 15 are rotatably arranged on the corner block 14;
The magic is pulled and is pasted 16 to the tip of pull wire 11, and the pull wire 11 is provided with a tension sensor 17 with the junction that the magic was pulled and is pasted 16, and the magic is pulled and is pasted 16 and is gone up to embed an electric heat piece 18, and the magic is pulled the bottom that pastes 16 and is glued and is had buffer bag 19, and the bottom surface fixed mounting of buffer bag 19 has adhesive tape 20.
Still include support frame 21, the last articulated arm 22 that has of support frame 21, the front end of arm 22 is articulated with free arm 1, all articulate between arm 22 and the support frame 21 and between free arm 1 and the arm 22 and transfer arm push rod 23, a display screen 24 is installed in the top rotation of support frame 21, the electric cabinet 25 that is connected with the display screen 24 electricity is installed to the side mounting of support frame 21, integrated singlechip and the battery of installing in the electric cabinet 25, the singlechip passes through battery power supply, the data end of vision acquisition probe 2 and display screen 24 all is connected with the singlechip data.
The bottom surface of the magic tape 16 is fixedly provided with a magic tape hook surface 35, the top surface of the buffer bag 19 is fixedly provided with a magic tape burr surface 36 which is in adhesive fit with the magic tape hook surface 35, the buffer bag 19 is made of flexible conductive elastic materials, conductive fluid is filled in the buffer bag 19, the conductive fluid is mixed suspension of liquid metal, ionic liquid and nano silicon dioxide, and two ends of the conductive fluid are electrically connected with the single chip microcomputer through embedded electrodes.
The flexible conductive material and conductive fluid filling design of the buffer bag 19 solves the potential safety hazard that the traditional adhesive tape 20 cannot dynamically sense the pulling force, the resistance change of the conductive fluid is fed back to the singlechip in real time, when the deformation of the buffer bag 19 exceeds a threshold value, the electric heating block 18 is rapidly heated to 50 ℃ to soften the adhesive layer, overload alarm is triggered, and if the pulling force is suddenly moved by a patient to cause the rapid increase of the pulling force, a protection mechanism is started within 0.5 seconds, skin tearing is avoided, and compared with a pure mechanical buffer structure, the response speed is improved by 3 times;
When the traction wire 11 is pulled by sudden pulling force such as sudden stop in movement and external force, the buffer bag 19 absorbs impact energy through elastic deformation, and stress is prevented from being directly transmitted to the joint of the adhesive tape 20 and the skin contact surface, so that the instant peeling risk of the adhesive tape 20 is reduced, the fixing stability is improved, and the adhered surface such as skin is prevented from being damaged by overlarge local pressure;
the flexible characteristic of the buffer bag 19 can disperse the concentrated force transmitted by the traction wire 11 into uniform pressure, so that edge tilting or local degumming caused by hard connection of the magic tape is avoided;
in the scene requiring frequent movement, the buffer bag 19 allows the magic tape and the adhesive tape 20 to generate tiny displacement, so that the adhesive failure caused by repeated bending or friction is avoided;
The resistance change signal of the conductive fluid and the deformation quantity of the buffer bag 19 are in a nonlinear relation, an adaptive filtering algorithm is built in the singlechip, the singlechip collects the resistance change signal of the conductive fluid in real time, calculates the real-time deformation quantity of the buffer bag 19 according to a preset deformation resistance relation model, generates a first control instruction to adjust the heating power of the electric heating block 18 when the real-time deformation quantity exceeds a first threshold value, rapidly heats the electric heating block 18 to 50 ℃ to soften the adhesive layer, generates a second control instruction to trigger an overload alarm signal of the tension sensor 17 when the real-time deformation quantity exceeds a second threshold value, and embeds a temperature compensation algorithm in the singlechip to inhibit interference of environment temperature and humidity on the resistance signal of the conductive fluid.
The nonlinear resistance model and the self-adaptive filtering algorithm solve the problem of false alarm caused by environmental interference, the singlechip converts the resistance signal of the conductive fluid into accurate deformation through the preset deformation resistance relation model and the temperature compensation algorithm, the self-adaptive filtering can inhibit 50Hz power frequency interference in a high-temperature high-humidity operation environment, the detection error is ensured to be less than or equal to 5%, and experimental data show that the false alarm rate of the scheme is reduced to below 1% from the traditional 15%;
the adhesive tape 20 comprises a flexible substrate layer and an adhesive layer which are sequentially connected from outside to inside, wherein the flexible substrate layer is connected with the buffer bag 19 through a hot pressing process, the flexible substrate layer is made of organic silicon rubber, the thickness of the flexible substrate layer is 0.2mm, the adhesive layer is a heat-activated pressure-sensitive adhesive, the thickness of the adhesive layer is 0.05mm, and the peeling strength attenuation rate of the adhesive layer in the range of 40 ℃ to 60 ℃ is more than or equal to 50%.
The composite structure of the heat-activated pressure-sensitive adhesive layer and the flexible substrate layer solves the problem that the adhesive tape 20 remains colloid or damages skin, the flexible substrate layer is adhered to the buffer bag 19 through hot pressing, soft support is provided, when the temperature of the heat-sensitive adhesive layer 18 is raised to 50 ℃, the peeling strength is reduced from 1.5N/cm to 0.5N/cm, so that 'one-key disassembly' is realized, after emergency surgery, medical staff triggers a heating instruction, the adhesive tape 20 can be peeled off painlessly within 3 seconds, and the skin damage caused by the traditional tearing mode is avoided;
The traction wire 11 is formed by spirally winding ultra-high molecular weight polyethylene fibers and nickel-titanium alloy wires, the diameter of a monofilament is 0.5mm, and the outer diameter of the traction wire 11 is 1.2mm.
The composite traction wire 11 of the ultra-high molecular weight polyethylene and the nickel-titanium alloy wire solves the problems that the traditional metal traction wire 11 is easy to fatigue fracture or the ductility of nylon wires is too high, the polyethylene fiber provides ultra-high tensile strength, the nickel-titanium alloy wire endows shape memory characteristics, the shape memory characteristics are automatically restored to a straight line state after multiple bending, in the complex wound surface traction, the traction wire 11 can bear 200N continuous tensile force, the service life reaches 105 times of circulation, and compared with the pure metal wire, the weight is reduced by 60 percent, and the operation fatigue is remarkably reduced;
The negative pressure locking mechanism comprises a negative pressure sucker 37 which is in sliding communication with the negative pressure pipe 8, a negative pressure pump 38 is arranged on the negative pressure pipe 8, a negative pressure port of the negative pressure pump 38 is communicated with the negative pressure pipe 8, and a limit spring 39 is arranged between the negative pressure pipe 8 and the negative pressure sucker 37.
When the skin is pulled, the negative pressure sucker 37 sucks the skin of the non-pulling part under negative pressure, so that the position of the movable arm 4 is accurately limited, and the stability of the device in the operation process is ensured.
The working principle and the using flow of the invention are as follows:
Firstly, the device is fixed near an operation area through a support frame 21, a movable arm 22 and a free arm 1 on the support frame 21 realize multi-degree-of-freedom adjustment through an arm adjusting push rod 23, a medical staff controls the arm adjusting push rod 23 to stretch and retract through an electric cabinet 25, the movable arm 22 is driven to rotate around a hinge point of the support frame 21, meanwhile, the free arm 1 synchronously pitching along with the movable arm 22, a second linear transmission module 26 on a swinging frame 3 is combined to adjust the position of a movable arm 4, a traction mechanism is accurately positioned to the edge of a wound, a visual acquisition probe 2 at the front end of the free arm 1 captures a wound image in real time and transmits the image to a display screen 24, visual reference is provided for the medical staff, and the traction mechanism enables a plurality of traction frames 7 to adapt to wounds of different shapes through rotation of the swinging frame 3 and sliding of the movable arm 4;
The traction frame 7 and the negative pressure pipe 8 are quickly connected with the positioning pipe 5 through a quick connecting mechanism, the inverted T-shaped section of the quick connecting rod 28 is clamped into the positioning pipe 5, the magnetic suction plate 29 is adsorbed and locked with a clamping groove on the traction frame 7 or the negative pressure pipe 8, so that second-level disassembly and assembly are realized, the negative pressure pipe 8 generates negative pressure through the negative pressure pump 38, the negative pressure sucker 37 is adsorbed on the skin of a non-traction area, and the integral position of the device is stabilized by matching with the limit spring 39;
The traction wire 11 is wound and unwound by a winding roller 10 driven by a first motor 9, the precision adjustment of the traction wire 11 millimeter level is ensured by a worm and gear transmission system, an adjusting arm 12 slides through a first linear transmission module 13 to drive a corner block 14 to rotate, a second motor 33 drives the worm to adjust the angle of a wire guide roller 15, so that the traction direction of the traction wire 11 is dynamically adjusted, a magic tape 16 at the tail end of the traction wire 11 is fixed on the skin surface through an adhesive tape 20, and a built-in tension sensor 17 monitors the traction force in real time;
The buffer bag 19 at the bottom of the magic tape 16 is filled with conductive fluid, a resistance change signal is transmitted to the singlechip during deformation, the singlechip calculates real-time deformation through a preset deformation resistance model, if the deformation exceeds a first threshold, the electric heating block 18 is heated to 50 ℃ to soften the heat-activated pressure-sensitive adhesive layer, the bonding strength is reduced, and if the deformation exceeds a second threshold, an overload alarm is triggered to prevent skin from being torn;
In the operation process, the negative pressure sucker 37 continuously adsorbs the stabilizing device, the display screen 24 synchronously displays the traction state and the wound image, after the operation, medical staff starts the electric heating block 18 to heat through the electric control box 25, painless peels off the adhesive tape 20 within 3 seconds, the whole process is powered by the integrated electric control box 25 and the storage battery, and the device is suitable for emergency treatment and mobile operation scenes, and realizes high-precision, self-adaptive and low-risk skin traction operation;
The negative pressure sucker 37 is made of medical silica gel.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.