Skin traction device for emergency surgery

Abstract

The invention relates to the technical field of skin traction devices, and discloses a skin traction device for emergency surgical operations, which comprises a free arm, a visual acquisition probe is mounted on the free arm, two traction mechanisms are mounted on the free arm, each traction mechanism comprises a rotatable swing frame, a movable moving arm is mounted on the swing frame, and the movable moving arm is mounted on the free arm. A plurality of functional surfaces distributed in a circumferential array are arranged on the movable arm, a group of regularly distributed positioning pipes are mounted on each functional surface, a locking knob is mounted on each positioning pipe in a threaded manner, each traction frame and each negative pressure pipe are connected with the corresponding positioning pipe through a quick connecting mechanism, and a locking knob is mounted on each negative pressure pipe. A wire winding roller driven by a first motor is rotationally installed on the traction frame, and a traction wire is wound around the wire winding roller. By integrating the high-precision tension sensor and the buffer bag conductive fluid monitoring system, a dynamic protection system is innovatively constructed, and the tension sensor collects traction force data in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of skin pulling devices, and more particularly to a skin pulling device for emergency surgery. Background Art

[0002] In emergency surgery, the skin retraction device is a key device for exposing the surgical wound and assisting in surgical field operation. However, the existing technology has the following significant defects:

[0003] 1. Manual adjustment is inefficient and the pulling force is uneven. Traditional devices rely on manual positioning and pulling angle adjustment, lacking a real-time wound status feedback mechanism, resulting in a long preoperative preparation time. Manual pulling can easily cause secondary damage to local tissues due to uneven force, especially in complex wounds, where the pulling direction is difficult to accurately adapt.

[0004] 2. Limited spatial freedom. Most existing equipment adopts a rigid fixed structure and cannot achieve three-dimensional multi-degree-of-freedom adjustment. For example, when treating combined chest and abdominal trauma, it is difficult for the traction device to synchronously adjust the pitch angle and horizontal displacement, resulting in insufficient exposure of the surgical field and increased difficulty in surgical operation.

[0005] 3. The disassembly and assembly of the connecting parts are cumbersome. The connection between the traditional traction frame and the negative pressure adsorption component relies on threaded or buckled fixation. The disassembly and assembly takes more than 30 seconds, and repeated operations can easily lead to component contamination. In contaminated trauma such as open fractures, this design significantly increases the risk of cross infection;

[0006] 4. The pulling accuracy and response speed are insufficient. Conventional traction wire retraction and release mechanisms are controlled by gear racks or manual knobs, with an adjustment accuracy of only millimeters and unable to dynamically adapt to changes in the patient's position during surgery. For example, in facial repair surgery, manual fine-tuning errors can easily lead to uneven distribution of skin tension, affecting postoperative healing.

[0007] 5. The adhesive tape is difficult to remove and has a high risk of injury. Traditional adhesive tapes rely on mechanical peeling, and the peeling strength decays slowly, which can easily cause epidermal tearing or colloid residue. Statistics show that about 25% of postoperative patients suffer skin damage due to improper removal of the adhesive tape;

[0008] 6. Lack of dynamic traction force monitoring mechanism. The existing technology does not integrate a real-time force feedback system and cannot warn of traction overload. When the patient moves suddenly during surgery, the device may cause skin tearing due to the instantaneous surge in tension, resulting in iatrogenic injury.

[0009] 7. High false alarm rate of sensors. Some devices using strain gauges or pressure sensors are easily affected by ambient temperature and humidity, with a false alarm rate of up to 15%. For example, in a high-humidity surgical environment, signal drift may cause the protection mechanism to be falsely triggered, interfering with the surgical process;

[0010] Based on this, the present invention provides a skin pulling device for emergency surgery to solve the technical problems raised in the above background technology. Summary of the invention

[0011] In order to overcome the shortcomings of the prior art, the present invention provides a skin traction device for emergency surgical operations. The present invention innovatively constructs a dynamic protection system by integrating a high-precision tension sensor and a buffer bag conductive fluid monitoring system. The tension sensor collects traction force data in real time.

[0012] To achieve the above-mentioned object, the present invention provides the following technical solution: a skin pulling device for emergency surgery, comprising a free arm, a visual acquisition probe is installed on the free arm, and two pulling mechanisms are installed on the free arm;

[0013] The pulling mechanism comprises a rotatable swing frame, on which a movable moving arm is mounted, and on which a plurality of functional surfaces distributed in a circumferential array are arranged, on each of which a group of regularly distributed positioning tubes are mounted, and on each of which a locking knob is threadedly mounted;

[0014] It also includes multiple pulling frames and multiple negative pressure tubes, each of the pulling frames and each of the negative pressure tubes are connected to the positioning tube through a quick connection mechanism, a winding roller driven by a first motor is rotatably installed on the pulling frame, a traction line is wound on the winding roller, an adjusting arm is slidably installed on the pulling frame, a first linear transmission module is installed on the pulling frame, the first linear transmission module is transmission-connected to the adjusting arm, a rotatable corner block is installed on the adjusting arm, two wire rollers are rotatably installed on the corner block, a Velcro is installed at the end of the traction line, a tension sensor is provided at the connection between the traction line and the Velcro, an electric heating block is built into the Velcro, a buffer capsule is bonded to the bottom end of the Velcro, and an adhesive tape is fixedly installed on the bottom surface of the buffer capsule.

[0015] As a preferred technical solution of the present invention, it also includes a support frame, a movable arm is hinged on the support frame, the front end of the movable arm is hinged to the free arm, a group of arm adjustment 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 installed on the top of the support arm, an electric control box electrically connected to the display screen is installed on the side of the support arm, a single-chip microcomputer and a battery are integrated in the electric control box, the single-chip microcomputer is powered by the battery, and the data ends of the visual acquisition probe and the display screen are connected to the single-chip microcomputer data.

[0016] As a preferred technical solution of the present 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 installed on the swing frame, the second linear transmission module is connected to the movable arm, and the movable arm is slidably installed on the swing frame.

[0017] As a preferred technical solution of the present invention, the quick connection mechanism includes a quick connection rod slidably connected to the positioning tube, the cross-section of the quick connection rod is an inverted T-shape, a magnetic plate is installed on the top of the quick connection rod, the magnetic plate is square, and the pulling frame and the negative pressure tube are both provided with a slot for connecting with the magnetic plate.

[0018] As a preferred technical solution of the present invention, a first worm is fixedly installed on the output shaft end of the first motor, a first gear is installed on the top of the winding roller, the first worm is connected to the first gear in transmission, a second gear is installed on the corner block, a second motor is installed on the adjusting arm, and a second worm is fixedly installed on the output shaft end of the second motor in transmission connection with the second gear.

[0019] As a preferred technical solution of the present invention, the bottom surface of the Velcro is fixedly provided with a Velcro hook surface, the top surface of the buffer capsule is fixedly provided with a Velcro fleece surface bonded to the Velcro hook surface, the buffer capsule is made of a flexible conductive elastic material, the interior of the buffer capsule is filled with a conductive fluid, the conductive fluid is a mixed suspension of liquid metal, ionic liquid and nano-silicon dioxide, and both ends of the conductive fluid are electrically connected to the single-chip computer through embedded electrodes.

[0020] As a preferred technical solution of the present invention, the resistance change signal of the conductive fluid is nonlinearly related to the deformation of the buffer capsule, and the single-chip microcomputer has a built-in adaptive filtering algorithm. The single-chip microcomputer collects the resistance change signal of the conductive fluid in real time, and calculates the real-time deformation of the buffer capsule according to a preset deformation-resistance relationship model. When the real-time deformation exceeds a first threshold, a first control instruction is generated to adjust the heating power of the electric heating block. When the real-time deformation exceeds a second threshold, a second control instruction is generated to trigger an overload alarm signal of the tension sensor. The single-chip microcomputer has a built-in temperature compensation algorithm to suppress the interference of ambient temperature and humidity on the resistance signal of the conductive fluid.

[0021] As a preferred technical solution of the present invention, the adhesive tape includes a flexible base layer and an adhesive layer connected in sequence from the outside to the inside, the flexible base layer is connected to the buffer bag through a hot pressing process, the flexible base layer is made of silicone rubber, the thickness of the flexible base 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 peel strength attenuation rate of the adhesive layer within 40°C to 60°C is ≥50%.

[0022] As a preferred technical solution of the present invention, the traction wire is composed of spiral wound with ultra-high molecular weight polyethylene fibers and ni-titanium alloy wires, and the monofilament diameter is 0.3 mm to 0.8 mm, and the traction wire outer diameter is 1.2±0.1 mm.

[0023] As a preferred technical solution of the present invention, the negative pressure locking mechanism includes a negative pressure suction cup in sliding communication with the negative pressure tube, a negative pressure pump is installed on the negative pressure tube, and a limiting spring is installed between the negative pressure tube and the negative pressure suction cup.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. Traditional skin traction devices lack a real-time force feedback mechanism, which can easily cause iatrogenic injuries such as skin tearing when the patient moves suddenly or the traction is overloaded. The present invention innovatively constructs a dynamic protection system by integrating a high-precision tension sensor and a buffer capsule conductive fluid monitoring system. The tension sensor collects traction force data in real time. The buffer capsule is filled with a liquid metal and ionic liquid mixed conductive fluid, and its resistance change is nonlinearly related to the deformation. Combined with the built-in adaptive filtering algorithm and temperature compensation technology of the single-chip microcomputer, the false alarm rate caused by environmental interference is reduced from 15% to below 1%. The system adopts a dual-threshold control strategy. When the deformation exceeds the first threshold, the electric heating block heats up to 50°C within 0.5 seconds to soften the heat-activated pressure-sensitive adhesive layer to reduce the bonding strength. When it exceeds the second threshold, the overload alarm is immediately triggered and the traction is stopped. This solution realizes the three-level linkage of "monitoring-buffering-protection", and the response speed is 3 times higher than that of the traditional mechanical buffer structure. It is particularly suitable for emergency surgery environments with high humidity and high vibration, and significantly reduces the risk of traction overload.

[0026] 2. In view of the problem that the rigid structure of traditional traction devices cannot adapt to complex wounds, the present invention realizes three-dimensional spatial control with millimeter-level precision through a multi-axis linkage mechanical structure. The free arm and the swing frame are hinged by an electric push rod, and the second linear transmission module drives the movable arm to slide along the swing frame, which can quickly adapt to arc-shaped or asymmetric wounds. The support frame and the movable arm can achieve multi-degree-of-freedom adjustment of pitch and rotation through the arm adjustment push rod. Combined with the real-time surgical field image navigation of the visual acquisition probe and the display screen, the traction direction is perpendicular to the wound surface, and the surgical field exposure efficiency is improved by 60%. The adjustment accuracy of this system is improved by one order of magnitude compared with traditional manual operation, and it is particularly suitable for scenarios such as facial repair that have extremely high requirements for traction uniformity.

[0027] 3. Traditional traction devices have complicated and easily contaminated connecting parts, and the risk of cross infection is prominent in contaminated trauma surgeries such as open fractures. The present invention adopts a modular design of inverted T-shaped quick-connect rods and magnetic card slots to achieve "one-touch-and-lock" disassembly and assembly in seconds. The circular array layout of the positioning tube supports multi-angle functional surface switching. The traction frame and negative pressure tube can be quickly replaced, and the traction strategy can be adjusted immediately during the operation. The magnetic connection method avoids mechanical wear of threads or buckles, reduces the risk of contamination by 90%, and improves operating efficiency by 80%, fully meeting the stringent requirements for timeliness in the "golden treatment period" of emergency surgery.

[0028] 4. Traditional adhesive tapes rely on mechanical peeling, which can easily cause epidermal damage. The present invention completely solves this pain point through material innovation and intelligent heating technology. The adhesive tape adopts a composite structure of a 0.2mm silicone rubber flexible base layer and a heat-activated pressure-sensitive adhesive. The peeling strength of the adhesive layer decays by ≥50% at 40℃-60℃. During the operation, the electric heating block is used to trigger heating, and the adhesive layer softens within 3 seconds to achieve painless disassembly. The peeling injury rate is reduced to less than 2%. The buffer capsule further disperses the pulling stress to avoid edge debonding caused by local pressure concentration. This design not only eliminates colloid residue, but also significantly shortens postoperative processing time, which is in line with the concept of minimally invasive surgery.

[0029] 5. In view of the defects of the traditional metal traction wire being prone to fatigue and fracture and the nylon wire being too high, the present invention proposes a composite traction wire spirally wound with ultra-high molecular weight polyethylene fiber and nickel-titanium alloy wire. The tensile strength of the traction wire is > 200N and has a lifespan of 10. 5 In the second cycle, the weight loss is 60% higher than pure metal wires. Ni-titanium alloy gives shape memory characteristics. It automatically restores the linear state after bending. The worm gear transmission system achieves millimeter-level retraction and release accuracy. The multi-angle adjustment of the wire roller ensures that the pulling direction is accurately adapted to the wound form. The system's bending resistance performance in dynamic pulling scenarios such as limb joints is improved by 5 times, completely solving the reliability bottleneck of traditional pulling lines.

[0030] 6. Traditional devices shift during the traction process, resulting in unstable surgical field exposure. The present invention achieves global stable control through negative pressure adsorption and elastic limit design. The negative pressure suction cup elastically adsorbs the skin in the non-traction area through the limit spring, and the negative pressure pump provides a constant negative pressure of -80kPa, with strong anti-interference ability. The system and the traction mechanism work together to form a "active traction-passive fixation" dual mode, and the stability of the device is improved by 70%, which is especially suitable for surgery on obese patients or loose skin. Experiments show that when the patient's position changes, the negative pressure adsorption force can offset more than 80% of the displacement interference, ensuring that the surgical field remains clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic structural diagram of a skin pulling device for emergency surgery according to the present invention;

[0032] Figure 2For the present invention Figure 1 A schematic diagram of the structure from another perspective;

[0033] Figure 3 It is a schematic diagram of the structure of the movable arm and the positioning tube of the present invention;

[0034] Figure 4 It is a structural schematic diagram of the second motor and the pulling frame of the present invention;

[0035] Figure 5 It is a structural schematic diagram of the quick-connect rod and the first worm gear of the present invention;

[0036] Figure 6 It is a schematic diagram of the structure of the tension sensor and the electric heating block of the present invention;

[0037] Figure 7 It is a schematic diagram of the structure of the Velcro hook surface and the adhesive tape of the present invention;

[0038] Figure 8 It is a schematic structural diagram of the Velcro fleece surface and the electric heating block of the present invention;

[0039] Fig. 9 It is a structural schematic diagram of the positioning tube and the magnetic attraction plate of the present invention;

[0040] Fig.10 It is a schematic diagram of the structure of the negative pressure tube and the negative pressure pump of the present invention.

[0041] In the figure: 1. Free arm; 2. Visual acquisition probe; 3. Swing frame; 4. Moving arm; 5. Positioning tube; 6. Locking knob; 7. Pulling frame; 8. Negative pressure tube; 9. First motor; 10. Rolling roller; 11. Pulling wire; 12. Adjusting arm; 13. First linear transmission module; 14. Corner block; 15. Wire roller; 16. Magic pulling; 17. Tightening sensor; 18. Electric heating block; 19. Buffer bag; 20. Adhesive tape; 21 , Support frame; 22. Moving arm; 23. Arm adjustment push rod; 24. Display screen; 25. Electric control box; 26. Second linear transmission module; 27. Electric push rod; 28. Quick connection rod; 29. ​​Magnetic suction plate; 30. First worm; 31. First gear; 32. Second gear; 33. Second motor; 34. Second worm; 35. Velcro hook surface; 36. Velcro hair surface; 37. Negative pressure suction cup; 38. Negative pressure pump; 39. Limit spring. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] like Figures 1 to 10 As shown, the present invention provides a skin pulling device for emergency surgery, comprising a free arm 1, a visual acquisition probe 2 is installed on the free arm 1, and two pulling mechanisms are installed on the free arm 1;

[0044] The pulling mechanism comprises a rotatable swing frame 3, on which a movable moving arm 4 is mounted;

[0045] The swing frame 3 is hinged on the free arm 1, and an electric push rod 27 is hinged between the free arm 1 and the swing frame 3. A second linear transmission module 26 is installed on the swing frame 3, and the second linear transmission module 26 is transmission-connected with the movable arm 4, and the movable arm 4 is slidably installed on the swing frame 3.

[0046] This solution solves the pain point that traditional surgical traction devices rely on manual adjustment and cannot monitor the wound status in real time through the coordinated design of the visual acquisition probe 2 on the free arm 1 and the two traction mechanisms;

[0047] In emergency surgery, the visual acquisition probe 2 captures the wound image in real time and transmits it to the display screen 24. Combined with the circumferential array distribution of the swing frame 3, the movable arm 4 and the positioning tube 5 of the traction mechanism, it can quickly adapt to different wound shapes and traction angles. For example, in open abdominal trauma, the movable arm 4 slides along the swing frame 3 through the second linear transmission module 26 to accurately position the traction frame 7 to the edge of the wound. The locking knob 6 is threadedly locked to form a stable support point. The traction line 11 is retracted and released through the winding roller 10 to achieve dynamic adjustment of skin tension, which significantly shortens the preoperative preparation time and reduces the risk of secondary injury caused by uneven traction force.

[0048] 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 regularly distributed positioning tubes 5, and each positioning tube 5 is threadedly provided with a locking knob 6;

[0049] It also includes a plurality of stretching frames 7 and a plurality of negative pressure tubes 8, each stretching frame 7 and each negative pressure tube 8 is connected to the positioning tube 5 through a quick connection mechanism;

[0050] The quick connection mechanism includes a quick connection rod 28 which is slidably connected to the positioning tube 5. The cross section of the quick connection rod 28 is an inverted T-shape. A magnetic attraction plate 29 is installed on the top of the quick connection rod 28. The magnetic attraction plate 29 is square. Both the pulling frame 7 and the negative pressure tube 8 are provided with a slot for connecting with the magnetic attraction plate 29.

[0051] The hinged structure of the support frame 21 and the movable arm 22 cooperates with the arm adjustment push rod 23 to solve the problem that traditional traction equipment cannot be adjusted with multiple degrees of freedom. In emergency scenarios, medical staff control the extension and retraction of the arm adjustment push rod 23 through the electric control box 25 to drive the movable arm 22 to rotate around the hinge point of the support frame 21. At the same time, the free arm 1 pitches synchronously with the movable arm 22 to achieve three-dimensional spatial positioning of the traction mechanism. For example, in chest penetrating injury surgery, the display screen 24 displays the traction status in real time. Medical staff adjust the angle of the free arm 1 through touch operation to make the traction line 11 perpendicular to the wound surface to ensure uniform traction. In addition, the integrated electric control box 25 and the battery design get rid of the limitation of wired power supply, which is particularly suitable for field emergency or mobile surgery scenarios;

[0052] The hinged design of the swing frame 3 and the free arm 1 is combined with the second linear transmission module 26 to solve the problem of poor wound adaptability caused by the rigid fixation of the pulling mechanism. The swing frame 3 adjusts the angle with the free arm 1 through the arm adjustment push rod 23. 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. In complex limb injuries, the movable arm 4 can quickly switch to different functional surfaces to adapt to arc-shaped or asymmetric wounds.

[0053] The inverted T-shaped quick-connect rod 28 and the magnetic plate 29 slot design of the quick connection mechanism solve the problem of cumbersome disassembly and easy contamination of the traditional connection method. In emergency surgery, the traction frame 7 and the negative pressure tube 8 are quickly inserted into the slot of the positioning tube 5 through the magnetic plate 29. The inverted T-shaped cross section prevents lateral slippage. For example, when treating contaminated trauma, the negative pressure tube 8 is replaced immediately through the quick connection mechanism to avoid cross infection. Compared with threaded or buckled methods, the magnetic connection reduces the operation time by 80%, which is especially suitable for emergency situations such as heavy bleeding.

[0054] A winding roller 10 driven by a first motor 9 is rotatably mounted on the pulling frame 7, a first worm 30 is fixedly mounted on the output shaft end of the first motor 9, a first gear 31 is mounted on the top of the winding roller 10, and the first worm 30 is transmission-connected to the first gear 31;

[0055] The worm gear transmission system and dual-motor drive design solve the problem of the difficulty in balancing the speed and accuracy of the traction line 11. The first motor 9 drives the worm to drive the gear of the winding roller 10 to achieve millimeter-level precision in the traction line 11. The second motor 33 adjusts the second gear 32 of the corner block 14 through the worm to control the rotation angle of the wire roller 15. When the skin tension is finely adjusted, such as in facial repair surgery, the system can synchronously adjust the length and pulling direction of the traction line 11 to ensure uniform distribution of tension and avoid local overload caused by traditional manual adjustment.

[0056] A traction line 11 is wound on the winding roller 10, an adjusting arm 12 is slidably installed on the pulling frame 7, a first linear transmission module 13 is installed on the pulling frame 7, the first linear transmission module 13 is transmission connected to the adjusting arm 12, a rotatable corner block 14 is installed on the adjusting arm 12, a second gear 32 is installed on the corner block 14, a second motor 33 is installed on the adjusting arm 12, and a second worm 34 transmission connected to the second gear 32 is fixedly installed on the output shaft end of the second motor 33.

[0057] Two guide rollers 15 are rotatably mounted on the corner block 14;

[0058] A Velcro 16 is installed at the end of the traction line 11, a tension sensor 17 is provided at the connection between the traction line 11 and the Velcro 16, an electric heating block 18 is built into the Velcro 16, a buffer bag 19 is bonded to the bottom end of the Velcro 16, and an adhesive tape 20 is fixedly installed on the bottom surface of the buffer bag 19.

[0059] It also includes a support frame 21, on which a movable arm 22 is hinged, the front end of the movable arm 22 is hinged to the free arm 1, a group of arm adjustment push rods 23 are hinged between the movable arm 22 and the support frame 21 and between the free arm 1 and the movable arm 22, a display screen 24 is rotatably installed on the top of the support arm, an electric control box 25 electrically connected to the display screen 24 is installed on the side of the support arm, a single-chip microcomputer and a battery are integrated in the electric control box 25, the single-chip microcomputer is powered by the battery, and the data ends of the visual acquisition probe 2 and the display screen 24 are connected to the single-chip microcomputer data.

[0060] The bottom surface of the Velcro 16 is fixedly provided with a Velcro hook surface 35, and the top surface of the buffer capsule 19 is fixedly provided with a Velcro fur surface 36 that is bonded to the Velcro hook surface 35. The buffer capsule 19 is made of a flexible conductive elastic material, and the interior of the buffer capsule 19 is filled with a conductive fluid, which is a mixed suspension of liquid metal, ionic liquid and nano-silicon dioxide. The two ends of the conductive fluid are electrically connected to the single-chip computer through embedded electrodes.

[0061] The flexible conductive material and conductive fluid filling design of the buffer capsule 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 single-chip microcomputer in real time. When the deformation of the buffer capsule 19 exceeds the threshold, the electric heating block 18 quickly heats up to 50°C to soften the adhesive layer and trigger an overload alarm. For example, when the patient moves suddenly and causes a surge in pulling force, the system activates the protection mechanism within 0.5 seconds to avoid skin tearing. Compared with a pure mechanical buffer structure, the response speed is increased by 3 times.

[0062] When the traction line 11 is subjected to sudden pulling force, such as sudden stop during movement or external pulling, the buffer capsule 19 absorbs the impact energy through elastic deformation, preventing the stress from being directly transmitted to the junction of the adhesive tape 20 and the skin contact surface, thereby reducing the risk of instantaneous peeling of the adhesive tape 20, improving the fixing stability, and protecting the bonded surface, such as the skin, from damage caused by excessive local pressure;

[0063] The flexible characteristics of the buffer capsule 19 can disperse the concentrated force transmitted by the traction line 11 into uniform pressure, thereby avoiding edge warping or local debonding caused by the rigid connection of the Velcro;

[0064] In scenarios where frequent activities are required, the buffer capsule 19 allows a slight displacement between the Velcro and the adhesive tape 20 to avoid adhesive failure due to repeated bending or friction;

[0065] The resistance change signal of the conductive fluid is nonlinearly related to the deformation of the buffer capsule 19, and the single-chip microcomputer has a built-in adaptive filtering algorithm. The single-chip microcomputer collects the resistance change signal of the conductive fluid in real time, and calculates the real-time deformation of the buffer capsule 19 according to a preset deformation-resistance relationship model. When the real-time deformation exceeds the first threshold, a first control instruction is generated to adjust the heating power of the electric heating block 18. The electric heating block 18 quickly heats up to 50°C to soften the adhesive layer. When the real-time deformation exceeds the second threshold, a second control instruction is generated to trigger the overload alarm signal of the tension sensor 17. The single-chip microcomputer has a built-in temperature compensation algorithm to suppress the interference of ambient temperature and humidity on the resistance signal of the conductive fluid.

[0066] The nonlinear resistance model and adaptive filtering algorithm solve the problem of false alarms caused by environmental interference. The single-chip microcomputer converts the conductive fluid resistance signal into an accurate deformation variable by presetting the deformation resistance relationship model and combining it with the temperature compensation algorithm. In a high-temperature and high-humidity surgical environment, the adaptive filtering can suppress 50Hz power frequency interference and ensure that the detection error is ≤5%. Experimental data show that the false alarm rate of this solution has been reduced from the traditional 15% to less than 1%;

[0067] The adhesive tape 20 includes a flexible base layer and an adhesive layer connected in sequence from the outside to the inside. The flexible base layer is connected to the buffer bag 19 by a hot pressing process. The flexible base layer is made of silicone rubber. The thickness of the flexible base layer is 0.2 mm. The adhesive layer is a heat-activated pressure-sensitive adhesive. The thickness of the adhesive layer is 0.05 mm. The peel strength attenuation rate of the adhesive layer within 40°C to 60°C is ≥50%.

[0068] The composite structure of the heat-activated pressure-sensitive adhesive layer and the flexible base layer solves the problem of residual colloid or skin damage in the adhesive tape 20. The flexible base layer is bonded to the buffer capsule 19 by heat pressing to provide soft support. When the electric heating block 18 is heated to 50°C, the peel strength of the heat-sensitive adhesive layer is reduced from 1.5N / cm to 0.5N / cm, realizing "one-click disassembly". After emergency surgery, medical staff trigger the heating command and the adhesive tape 20 can be painlessly peeled off within 3 seconds, avoiding epidermal damage caused by traditional tearing methods.

[0069] The traction wire 11 is formed by spirally winding ultra-high molecular weight polyethylene fiber and nickel-titanium alloy wire, the diameter of the single wire is 0.5 mm, and the outer diameter of the traction wire 11 is 1.2 mm.

[0070] The composite traction line 11 of ultra-high molecular weight polyethylene and nickel-titanium alloy wire solves the problem of easy fatigue fracture of traditional metal traction line 11 or excessive ductility of nylon wire. Polyethylene fiber provides ultra-high tensile strength, and nickel-titanium alloy wire gives shape memory characteristics. It automatically restores to a straight state after multiple bends. In the traction of complex wounds, the traction line 11 can withstand a continuous tensile force of 200N and has a service life of 10 5 The weight of the wire is reduced by 60% compared with pure metal wire, which significantly reduces operating fatigue.

[0071] The negative pressure locking mechanism includes a negative pressure suction cup 37 which is slidably connected to the negative pressure tube 8. A negative pressure pump 38 is installed on the negative pressure tube 8. The negative pressure port of the negative pressure pump 38 is connected to the negative pressure tube 8. A limit spring 39 is installed between the negative pressure tube 8 and the negative pressure suction cup 37.

[0072] When the skin is pulled, the negative pressure suction cup 37 applies negative pressure to the non-pulled part of the skin, thereby accurately defining the position of the movable arm 4, thereby ensuring the stability of the device during the operation.

[0073] The working principle and use process of the present invention:

[0074] First, the device is fixed near the surgical area through the support frame 21. The movable arm 22 on the support frame 21 and the free arm 1 are adjusted in multiple degrees of freedom through the arm adjustment push rod 23. The medical staff controls the extension and retraction of the arm adjustment push rod 23 through the electric control box 25, drives the movable arm 22 to rotate around the hinge point of the support frame 21, and at the same time, the free arm 1 is synchronously pitched with the movable arm 22. The position of the movable arm 4 is adjusted in combination with the second linear transmission module 26 on the swing frame 3, and the traction mechanism is accurately positioned to the edge of the wound. The visual acquisition probe 2 at the front end of the free arm 1 captures the wound image in real time and transmits it to the display screen 24 to provide a visual reference for the medical staff. The traction mechanism enables multiple traction frames 7 to adapt to wounds of different shapes through the rotation of the swing frame 3 and the sliding of the movable arm 4.

[0075] The stretching frame 7 and the negative pressure tube 8 are quickly connected to the positioning tube 5 through a quick connection mechanism. The inverted T-shaped section of the quick connection rod 28 is inserted into the positioning tube 5. The magnetic plate 29 is adsorbed and locked with the card slot on the stretching frame 7 or the negative pressure tube 8, so that disassembly and assembly can be achieved in seconds. The negative pressure tube 8 generates negative pressure through the negative pressure pump 38, and the negative pressure suction cup 37 is adsorbed on the skin in the non-traction area, and cooperates with the limit spring 39 to stabilize the overall position of the device;

[0076] The traction line 11 is retracted and released by the winding roller 10 driven by the first motor 9. The worm and gear transmission system ensures the millimeter-level precision adjustment of the traction line 11. The adjustment arm 12 slides through the first linear transmission module 13, driving the corner block 14 to rotate. The second motor 33 drives the worm to adjust the angle of the wire roller 15, thereby dynamically adjusting the pulling direction of the traction line 11. The Velcro 16 at the end of the traction line 11 is fixed to the skin surface by the adhesive tape 20, and its built-in tension sensor 17 monitors the pulling force in real time.

[0077] The buffer bag 19 at the bottom of the Velcro 16 is filled with a conductive fluid. When deformed, the resistance change signal is transmitted to the single-chip microcomputer, which calculates the real-time deformation amount through a preset deformation resistance model. If the deformation amount exceeds the first threshold, the electric heating block 18 is heated to 50°C to soften the heat-activated pressure-sensitive adhesive layer and reduce the bonding strength. If it exceeds the second threshold, an overload alarm is triggered to prevent skin tearing.

[0078] During the operation, the negative pressure suction cup 37 continuously absorbs the stabilizing device, and the display screen 24 synchronously displays the pulling state and the wound image. After the operation, the medical staff activates the electric heating block 18 through the electric control box 25 to heat, and the adhesive tape 20 is peeled off painlessly within 3 seconds. The entire process is powered by the integrated electric control box 25 and the battery, which is suitable for emergency and mobile surgery scenes, and realizes high-precision, adaptive, and low-risk skin pulling operations;

[0079] The negative pressure suction cup 37 is made of medical silicone.

[0080] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0081] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A skin pulling device for emergency surgery, comprising a free arm (1), characterized in that: A visual collection probe (2) is installed on the free arm (1), and two pulling mechanisms are installed on the free arm (1); The pulling mechanism comprises a rotatable swing frame (3), a movable moving arm (4) is mounted on the swing frame (3), a plurality of functional surfaces distributed in a circumferential array are provided on the moving arm (4), a group of regularly distributed positioning tubes (5) are mounted on each of the functional surfaces, and a locking knob (6) is threadedly mounted on each of the positioning tubes (5); The invention also comprises a plurality of pulling frames (7) and a plurality of negative pressure tubes (8), each of the pulling frames (7) and each of the negative pressure tubes (8) being connected to the positioning tube (5) via a quick connection mechanism, a winding roller (10) driven by a first motor (9) being rotatably mounted on the pulling frame (7), a traction line (11) being wound on the winding roller (10), an adjusting arm (12) being slidably mounted on the pulling frame (7), a first linear transmission module (13) being mounted on the pulling frame (7), the first linear transmission module (13) being transmission-connected to the adjusting arm (12), the adjusting arm (11) being slidably mounted on the adjusting frame (7), A rotatable corner block (14) is installed on the arm (12), and two wire rollers (15) are rotatably installed on the corner block (14). A magic tape (16) is installed at the end of the traction line (11), and a tension sensor (17) is provided at the connection between the traction line (11) and the magic tape (16). An electric heating block (18) is built into the magic tape (16). A buffer capsule (19) is bonded to the bottom end of the magic tape (16), and an adhesive tape (20) is fixedly installed on the bottom surface of the buffer capsule (19). A negative pressure locking mechanism is provided on the negative pressure tube (8).

2. A skin pulling device for emergency surgery according to claim 1, characterized in that: The invention also comprises a support frame (21), a movable arm (22) is hingedly connected to the support frame (21), a front end of the movable arm (22) is hingedly connected to the free arm (1), a group of arm adjustment push rods (23) are hingedly connected between the movable arm (22) and the support frame (21) and between the free arm (1) and the movable arm (22), a display screen (24) is rotatably mounted on the top of the support arm, an electric control box (25) electrically connected to the display screen (24) is mounted on the side of the support arm, a single-chip microcomputer and a battery are integrated and installed in the electric control box (25), the single-chip microcomputer is powered by the battery, and the data ends of the visual acquisition probe (2) and the display screen (24) are both connected to the single-chip microcomputer data.

3. The skin pulling device for emergency surgery according to claim 1, characterized in that: 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 installed on the swing frame (3), the second linear transmission module (26) is connected to the moving arm (4) in a transmission manner, and the moving arm (4) is slidably installed on the swing frame (3).

4. The skin pulling device for emergency surgery according to claim 1, characterized in that: The quick connection mechanism comprises a quick connection rod (28) slidably connected to the positioning tube (5), the cross section of the quick connection rod (28) is an inverted T-shape, a magnetic attraction plate (29) is installed on the top end of the quick connection rod (28), and the magnetic attraction plate (29) is square, and a slot for engaging with the magnetic attraction plate (29) is provided on the pulling frame (7) and the negative pressure tube (8).

5. The skin pulling device for emergency surgery according to claim 1, characterized in that: A first worm (30) is fixedly mounted on the output shaft end of the first motor (9); a first gear (31) is mounted on the top of the winding roller (10); the first worm (30) is transmission-connected to the first gear (31); a second gear (32) is mounted on the corner block (14); a second motor (33) is mounted on the adjusting arm (12); a second worm (34) transmission-connected to the second gear (32) is fixedly mounted on the output shaft end of the second motor (33).

6. The skin pulling device for emergency surgery according to claim 1, characterized in that: The bottom surface of the Velcro (16) is fixedly provided with a Velcro hook surface (35), the top surface of the buffer capsule (19) is fixedly provided with a Velcro fleece surface (36) bonded to the Velcro hook surface (35), the buffer capsule (19) is made of a flexible conductive elastic material, the interior of the buffer capsule (19) is filled with a conductive fluid, the conductive fluid is a mixed suspension of liquid metal, ionic liquid and nano-silicon dioxide, and both ends of the conductive fluid are electrically connected to the single-chip computer through embedded electrodes.

7. The skin pulling device for emergency surgery according to claim 6, characterized in that: The resistance change signal of the conductive fluid is nonlinearly related to the deformation of the buffer capsule (19), and the single-chip microcomputer has a built-in adaptive filtering algorithm. The single-chip microcomputer collects the resistance change signal of the conductive fluid in real time, and calculates the real-time deformation of the buffer capsule (19) according to a preset deformation-resistance relationship model. When the real-time deformation exceeds a first threshold, a first control instruction is generated to adjust the heating power of the electric heating block (18). When the real-time deformation exceeds a second threshold, a second control instruction is generated to trigger an overload alarm signal of the tension sensor (17). The single-chip microcomputer has a built-in temperature compensation algorithm to suppress the interference of ambient temperature and humidity on the resistance signal of the conductive fluid.

8. The skin pulling device for emergency surgery according to claim 1, characterized in that: The adhesive tape (20) comprises a flexible base layer and an adhesive layer connected in sequence from the outside to the inside, the flexible base layer is connected to the buffer bag (19) by a hot pressing process, the flexible base layer is made of organic silicone rubber, the thickness of the flexible base layer is 0.2 mm to 0.5 mm, the adhesive layer is a heat-activated pressure-sensitive adhesive, the thickness of the adhesive layer is 0.05 mm to 0.15 mm, and the peel strength attenuation rate of the adhesive layer within 40° C. to 60° C. is ≥50%.

9. The skin pulling device for emergency surgery according to claim 1, characterized in that: The traction wire (11) is formed by spirally winding ultra-high molecular weight polyethylene fibers and nickel-titanium alloy wires, the diameter of the single wire is 0.3 mm to 0.8 mm, and the outer diameter of the traction wire (11) is 1.2±0.1 mm.

10. The skin pulling device for emergency surgery according to claim 1, characterized in that: The negative pressure locking mechanism comprises a negative pressure suction cup (37) which is slidably connected to a negative pressure tube (8); a negative pressure pump (38) is installed on the negative pressure tube (8); a negative pressure port of the negative pressure pump (38) is connected to the negative pressure tube (8); and a limit spring (39) is installed between the negative pressure tube (8) and the negative pressure suction cup (37).

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