A gynecological examination bed with automatically replaceable bed sheet

Abstract

This invention relates to the field of gynecological examination bed technology, specifically a gynecological examination bed with an automatically changing bed sheet. It includes a base frame with an adjustable upper bed and a lower bed. It also includes: two longitudinal rollers rotatably connected to the lower bed; two first motors mounted on the lower bed, with their output shafts fixedly connected to the two longitudinal rollers; a base belt wound between the two longitudinal rollers, with multiple first bed sheets adhered to the base belt; a set of vibrating rollers rotatably connected to the lower bed; first spray holes arrayed on the lower bed corresponding to positions below the vibrating rollers; and two transverse rollers rotatably connected to the upper and lower beds, respectively. A second motor is fixedly mounted on the side of each of the upper and lower beds, with its output shaft fixedly connected to the two transverse rollers. The beneficial effects of this invention are: it integrates multiple active cleaning mechanisms including vibration dust removal, positive pressure blowing, and self-cleaning drying.

Description

Technical Field

[0001] This invention relates to the field of gynecological examination bed technology, specifically a gynecological examination bed with an automatic sheet-changing function. Background Technology

[0002] In the field of gynecological examination bed technology, there have been attempts to achieve automatic sheet changing through a winding structure in the existing technology. For example, patent document CN112914596A discloses a device for automatically changing sheets for a CT examination bed. This device, by setting up a front roller, a rear roller, a motor, and a guide roller assembly, realizes the automatic raising, lowering, and changing of the sheet on the examination bed, which to a certain extent reduces the manual operation burden of medical staff and lowers the risk of cross-infection. However, when this kind of general-purpose automatic sheet changing technology is directly applied to gynecological examination scenarios, there are still a series of unresolved technical problems that significantly affect the efficiency of diagnosis and treatment and hygiene and safety. The specific problems are as follows: Existing automatic bed sheet changing devices lack integrated cleaning and drying functions tailored to the specific contamination characteristics of gynecological examinations. This results in residual contaminants or dampness remaining on the sheets after changing, failing to directly meet the high standards of cleanliness and dryness required for gynecological examinations. Furthermore, the lack of proactive stain prevention and removal mechanisms for the sheets makes them prone to contamination and difficult to clean, increasing subsequent maintenance burdens and the risk of infection. Based on this, the present invention provides a gynecological examination bed with automatic sheet changing capability to solve the problems mentioned in the background art. Summary of the Invention

[0003] This invention addresses the technical problems existing in the prior art by providing a gynecological examination bed with an automatic sheet-changing function. This solves the problems of existing automatic sheet-changing devices for gynecological examination beds lacking targeted cleaning and drying functions, having insufficient anti-fouling measures, and having poor bed sheet compatibility.

[0004] The technical solution of this invention to solve the above-mentioned technical problems is as follows: A gynecological examination bed with automatically changeable sheets, comprising a base frame on which an adjustable upper body bed and a lower body bed are mounted, and further comprising: Two longitudinal rollers are rotatably connected to the lower body bed. Two first motors are installed on the lower body bed. The output shafts of the two first motors are respectively fixedly connected to the two longitudinal rollers. A base belt is wound between the two longitudinal rollers, and multiple first bed sheets are adhered to the base belt. A set of excitation rollers are rotatably connected to the lower bed, and the lower bed is provided with first spray holes arrayed at positions corresponding to the positions below the excitation rollers; Two horizontal rollers are rotatably connected to the upper bed and the lower bed respectively. A second motor is fixedly installed on the side of both the upper bed and the lower bed. The output shafts of the two second motors are fixedly connected to the two horizontal rollers respectively. A second bed cloth is wound between the two horizontal rollers. Multiple functional areas are arranged in an array on the second bed cloth. Each functional area includes an upper body section, a transition section and an inspection section connected in sequence. The second jet nozzle is arrayed on the upper bed; Two multi-section articulated booms, each equipped with a lower limb support and an air jet manifold, with nozzles arrayed on the bottom surface of the air jet manifold; The positive pressure air supply unit is configured to achieve positive pressure air output from the first nozzle, the second nozzle, and the nozzle. The washing and regeneration unit is configured to perform water washing and heat drying of the second sheet fabric. The pre-spray unit is configured to spray anti-stick liquid onto the second bed fabric.

[0005] Based on the above technical solution, the present invention can be further improved as follows.

[0006] Preferably, the upper bed is hinged to the lower bed via a first hinge pin, the lower bed is hinged to the base frame via a second hinge pin, an angle adjustment push rod is hinged between the base frame and the upper bed and between the base frame and the lower bed, and two pads are fixedly installed on the lower bed.

[0007] Preferably, a main controller and a foot control switch are fixedly installed on the base frame. The data terminal of the foot control switch is connected to the main controller. A ladder frame and four universal brake wheels are fixedly installed on the base frame. A first guide roller is rotatably connected to the lower bed, and two second guide rollers are rotatably connected to the upper bed. Both the first and second guide rollers are connected to the second bed fabric for transmission.

[0008] Preferably, the multi-section curved arm includes a large arm rotatably connected to the lower body bed, a middle arm rotatably mounted on the large arm, a forearm rotatably connected to the middle arm, a lower limb support fixedly mounted on the forearm, and angle locking knobs fixedly mounted on the lower body bed, the large arm, and the middle arm. The air inlet end of the jet pipe is rotatably connected to the large arm through a rotary joint.

[0009] Preferably, the positive pressure air supply unit includes a blower mounted on the base frame, an air filter is installed at the air inlet of the blower, an electric heating wire is provided at the air outlet of the blower and connected to a multi-way hose, a first cavity communicating with a first nozzle is opened inside the lower bed, a second cavity communicating with a second nozzle is opened inside the upper bed, and a flow channel communicating with a jet branch pipe is opened on the upper arm, and the first cavity, the second cavity and the flow channel are all connected to the multi-way hose.

[0010] Preferably, the vibrating roller integrates a vibrating motor, the vibrating roller is arranged parallel to the longitudinal winding roller, and a ventilation gap that cooperates with the first spray hole is fixedly provided between two adjacent vibrating rollers. The axis of the first spray hole is perpendicular to the axis of the longitudinal winding roller, the axis of the second spray hole is perpendicular to the axis of the transverse winding roller, and the longitudinal winding roller and the transverse winding roller are arranged perpendicularly.

[0011] Preferably, the cleaning and regeneration unit includes a maintenance box fixedly mounted on the upper bed. The maintenance box has a liquid storage chamber, and two brush rollers are rotatably connected to the liquid storage chamber. Each of the two brush rollers has an array of water washing holes. Spiral brushes are fixedly mounted on each of the two brush rollers, and the spiral directions of the two spiral brushes are opposite. An extrusion convex roller is rotatably connected to the upper bed, and the extrusion convex roller is in contact with a second bed fabric. A synchronous belt is driven to one of the second guide rollers. The extrusion convex roller and the two brush rollers are all driven to the synchronous belt. A circulation pump communicating with the liquid storage chamber is installed on the side of the maintenance box, and the outlet port of the circulation pump is connected to the water washing holes. An electric heating table is installed on the side of the maintenance box.

[0012] Preferably, a water washing channel is provided at the axial position of the brush roller, a three-way pipe is connected to the outlet port of the circulating pump, the other two ends of the three-way pipe are respectively rotatably connected to the two water washing channels, a drain valve is connected to the bottom surface of the liquid storage chamber, and a replenishment valve is connected to the top of the liquid storage chamber.

[0013] Preferably, the pre-spray unit includes a headrest box fixed to the upper bed, a protective liquid storage chamber is provided in the headrest box, a pump body is integrated in the protective liquid storage chamber, and the outlet port of the pump body is connected to a spray pipe, which is located above the second bed sheet.

[0014] Preferably, the upper body section, transition section and inspection section are made of different materials, the outer surface of the base belt is fixedly provided with a hook and loop fastener, and the bottom surface of the first bed sheet is fixedly provided with a hook and loop fastener that is bonded to the hook and loop fastener.

[0015] The beneficial effects of this invention are: 1. This invention integrates multiple active cleaning mechanisms, including vibration dust removal, positive pressure blowing, and self-cleaning and drying. By vibrating the vibration roller to shake off bed dust and impurities, and cooperating with the positive pressure airflow from the first and second spray holes and the air jet branch pipes on the multi-section curved arm, not only can dirt be blown away from the bed sheet surface in time, but the bed sheet can also be dried quickly. This effectively avoids the residual pollution and dampness problems caused by traditional methods that rely solely on rolling and changing sheets. This comprehensive cleaning system works in conjunction with the automatic sheet changing structure, completing cleaning and drying while changing the bed sheet, significantly improving the hygiene and safety level of the bed sheet, meeting the high standards of cleanliness and dryness required for gynecological examinations, and forming a clear distinction from existing general-purpose automatic sheet changing technologies.

[0016] 2. This invention, through a double-layer bed sheet arrangement and zoned material design, achieves automated replacement while further enhancing protection and functional adaptability. The second bed sheet is divided into upper body section, transition section, and examination section, using disposable biodegradable materials with different properties to achieve skin-friendly comfort, elastic fit, and waterproof and impermeable functions, respectively. The first bed sheet is detachably set on top of the second bed sheet via Velcro, forming double protection and supporting quick local replacement. This design not only improves patient comfort and the hygiene of the examination process, but also achieves independent and coordinated automatic winding and replacement of the two bed sheet systems through the vertical arrangement of horizontal and vertical rollers, motor drive, and guide roller guidance. The two work together in transmission and control to ensure that the bed surface is always clean and usable, thereby significantly reducing the risk of cross-infection and the operational burden on medical staff.

[0017] 3. This invention integrates a multi-section flexor arm for patient positioning adjustment, a cleaning and regeneration unit, and a pre-spraying unit. Centralized control is achieved through a main controller and a foot pedal switch, demonstrating a high degree of functional integration and operational synergy. The multi-section flexor arm allows for flexible adjustment of the lower limb support position and synchronizes the air jet tube's direction with the airflow, improving patient positioning and localized drying. The cleaning and regeneration unit, through brush rollers, extrusion rollers, and a water-washing and heat-drying process, enables online deep cleaning and regeneration of the second bed sheet. The pre-spraying unit forms an anti-stick coating on the bed sheet surface, reducing contamination adhesion at the source. Under unified control, these mechanisms work in conjunction with the changing and cleaning processes, achieving fully automated management from contamination prevention and immediate cleaning to deep self-maintenance, thereby improving diagnostic and treatment efficiency and reducing maintenance costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a gynecological examination bed with an automatic sheet changing function according to the present invention. Figure 2 This is a schematic diagram of the lower limb support and multi-section curved arm of the present invention; Figure 3 For the present invention Figure 1 A schematic diagram of the cross-sectional structure; Figure 4 For the present invention Figure 3 A magnified schematic diagram of the partial structure at point A in the middle; Figure 5 This is a schematic diagram of the structure of the first motor and the excitation roller of the present invention; Figure 6 For the present invention Figure 5 Another perspective structural diagram; Figure 7 This is a schematic diagram of the structure of the pad and upper bed of the present invention; Figure 8 For the present invention Figure 7 A structural diagram from another perspective; Figure 9 This is a schematic diagram of the headrest box and extrusion roller of the present invention; Figure 10 This is an exploded structural diagram of the baseband and the first bed fabric of the present invention; Figure 11 This is a schematic diagram of the water washing hole structure of the present invention.

[0019] The attached diagram lists the components represented by each number as follows: 1. Base frame; 2. Upper bed; 3. Lower bed; 4. Longitudinal winding roller; 5. First motor; 6. Base belt; 7. First bed fabric; 8. Vibration roller; 9. First nozzle; 10. Transverse winding roller; 11. Second motor; 12. Second bed fabric; 13. Second nozzle; 14. Multi-section articulated arm; 15. Lower limb support; 16. Air jet pipe; 17. Angle adjustment push rod; 18. Pad block; 19. Foot pedal control switch; 2 0. Climbing ladder; 21. Universal brake roller; 22. First guide roller; 23. Second guide roller; 24. Blower; 25. Maintenance box; 26. Liquid storage chamber; 27. Brush roller; 28. Water washing hole; 29. ​​Spiral brush; 30. Extrusion convex roller; 31. Circulation pump; 32. Heating table; 33. T-shaped pipe; 34. Headrest box; 35. Protective liquid storage chamber; 36. First cavity; 37. Second cavity. Detailed Implementation

[0020] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0021] The present invention provides the following preferred embodiments. like Figure 1-11 As shown, a gynecological examination bed with an automatic sheet changing function includes a base frame 1, on which an adjustable upper body bed 2 and a lower body bed 3 are mounted. The upper bed 2 is hinged to the lower bed 3 via the first hinge pin, and the lower bed 3 is hinged to the base frame 1 via the second hinge pin. An angle adjustment push rod 17 is hinged between the base frame 1 and the upper bed 2, and between the base frame 1 and the lower bed 3. Two pads 18 are fixedly installed on the lower bed 3, and a shelf is detachably installed between the two pads 18. Shelves are used to store related inspection instruments or waste collection boxes; The pad 18 is used to provide auxiliary support for the patient's lower limbs or calves; Pad 18 is made of sponge material; A main controller and a foot control switch 19 are fixedly installed on the base frame 1. The data terminal of the foot control switch 19 is connected to the main controller. A ladder frame 20 and four universal brake wheels 21 are fixedly installed on the base frame 1. In a preferred embodiment, the base frame 1 is further provided with a power management module for connecting to and managing power; Preferably, a red emergency stop button is also provided on the base frame 1; The upper body bed 2 and the lower body bed 3 are hinged to each other by hinge pins. With the help of the angle adjustment push rod 17 between the base frame 1 and the bed body, the tilt angle of the upper body bed 2 and the lower body bed 3 can be flexibly adjusted to adapt to different body position requirements in gynecological examinations, improve the patient's examination comfort and the doctor's operation convenience. The sponge pad 18 can provide flexible support for the patient's lower limbs, avoiding fatigue caused by the lower limbs being suspended in the air during the examination. The shelf can be placed nearby to store examination instruments, waste collection boxes and other supplies, reducing the doctor's movement when taking and putting things away and improving examination efficiency. The main controller and foot control switch 19 work together to enable foot pedal operation of the equipment, freeing doctors' hands and making operation more convenient. The ladder frame 20 makes it easy for patients to get on and off the bed, especially suitable for patients with limited mobility. The universal brake wheels 21 allow the gynecological examination bed to be moved flexibly and fixed stably to meet the placement needs of different treatment spaces. The power management module can regulate the connected power supply, provide overcurrent protection and other controls, and ensure the stable and safe operation of all electrical components of the equipment, avoiding equipment failures caused by power fluctuations. Also includes: Two longitudinal rollers 4 are rotatably connected to the lower bed 3. Two first motors 5 are installed on the lower bed 3. The output shafts of the two first motors 5 are fixedly connected to the two longitudinal rollers 4 respectively. A base belt 6 is wound between the two longitudinal rollers 4. Multiple first bed fabrics 7 are adhered to the base belt 6. The placement of the base band 6 and the first bed sheet 7 corresponds to the lower body area during a gynecological examination; The outer surface of the baseband 6 is fixedly provided with a hook and loop fastener, and the bottom surface of the first bed sheet 7 is fixedly provided with a hook and loop fastener that is bonded to the hook and loop fastener. Two first motors 5 drive the longitudinal winding rollers 4 to rotate, which can drive the base belt 6 to achieve winding and unwinding, thereby completing the automatic replacement of the first bed sheet 7 in the gynecological examination lower body area. No manual laying is required, improving the efficiency of bed sheet replacement and reducing the workload of medical staff. The baseband 6 and the first bed sheet 7 are bonded together by the hook and loop sides of Velcro, allowing the first bed sheet 7 to be disassembled and replaced independently. If a single piece of the first bed sheet 7 becomes soiled, it can be replaced separately without replacing the entire baseband 6, thus reducing the cost of use. At the same time, the Velcro bonding method makes disassembly and assembly convenient, allowing for quick bed sheet replacement and ensuring the continuity of the treatment process. A set of excitation rollers 8 are rotatably connected to the lower bed 3, and the lower bed 3 is provided with first spray holes 9 in an array at the position corresponding to the position below the excitation rollers 8; The vibrating roller 8 integrates a vibrating motor. The vibrating roller 8 is arranged parallel to the longitudinal winding roller 4. A ventilation gap that cooperates with the first spray hole 9 is fixedly provided between two adjacent vibrating rollers 8. The axis of the first spray hole 9 is perpendicular to the axis of the longitudinal winding roller 4. The vibration motor integrated in the vibration roller 8 can drive the vibration roller 8 to vibrate, and the vibration is transmitted to the first bed cloth 7 and the second bed cloth 12, which can effectively shake off the debris, impurities and other dirt on the surface of the bed cloth and reduce dirt residue. The vibration frequency of the excitation roller 8 is 50-80Hz, and the amplitude is 0.5-1mm; The vibrating roller 8 is set parallel to the longitudinal winding roller 4, and a ventilation gap is reserved between adjacent vibrating rollers 8. With the positive pressure air outlet of the first spray hole 9 with the axis perpendicular to the longitudinal winding roller 4, the air force can pass through the bed cloth evenly along the ventilation gap. On the one hand, it can blow the shaken dirt away from the bed cloth, and on the other hand, it can dry the bed cloth by blowing air, avoiding the growth of bacteria on the surface of the bed cloth. At the same time, the vertical air outlet direction can make the air force act more directly on the bed cloth, improving the cleaning and drying effect.

[0022] Two horizontal rollers 10 are rotatably connected to the upper bed 2 and the lower bed 3 respectively. A second motor 11 is fixedly installed on the side of both the upper bed 2 and the lower bed 3. The output shafts of the two second motors 11 are fixedly connected to the two horizontal rollers 10 respectively. A second bed cloth 12 is wound between the two horizontal rollers 10. Multiple functional areas are arranged in an array on the second bed cloth 12. Each functional area includes an upper body section, a transition section and an inspection section connected in sequence. The first sheet 7 is laid on top of the second sheet 12; A first guide roller 22 is rotatably connected to the lower bed 3, and two second guide rollers 23 are rotatably connected to the upper bed 2. Both the first guide roller 22 and the second guide roller 23 are connected to the second bed fabric 12 in a transmission connection. The materials used for the upper body section, transition section, and inspection section are all different; In a preferred embodiment, the upper body section is made of polyester-nylon composite microfiber spunlace nonwoven fabric, which is formed by blending polyester and nylon in a 7:3 ratio, with a weight of 60g / ㎡ and an air permeability of ≥450mm / s, and is treated with hydrophilic treatment and antistatic finishing. The material is soft and skin-friendly, has good moisture absorption and is not easy to stick to lint. It can withstand ≥50 washes and will not pill or deform after washing. It can withstand dual sterilization by ethylene oxide and high-temperature steam, and meets the requirements of comfort and durability for repeated use for patients who have been in contact with it for a long time. The transition section uses elastic polyolefin spunbond composite fabric, with an outer layer of modified polypropylene spunbond layer and an inner layer of POE elastic composite layer. It is double-layer hot-pressed composite molding, with a breaking elongation of ≥300% and a bending count of ≥10,000 times without creases or delamination. This material combines elasticity and toughness, allowing it to bend at multiple angles to fit snugly against the bed surface. It is water-resistant and rub-resistant, with no loss of elasticity after washing. It also has excellent thermal adhesion to the upper and lower sections, preventing problems such as glue separation or delamination during use.

[0023] The inspection section uses high-density waterproof SMS composite non-woven fabric, which is a three-layer composite structure consisting of a polypropylene spunbond layer, a high melt index meltblown waterproof layer, and a polypropylene spunbond layer. It is then subjected to double-sided hot pressing and shaping, as well as anti-sticking and hydrophobic finishing. This material is waterproof, impermeable, and prevents the adhesion of sticky liquids, effectively blocking liquids and secretions during the inspection process. It is also water-resistant, easy to clean, and its waterproof performance does not decrease after washing. At the same time, the surface is treated with an anti-stick coating to reduce dirt adhesion and reduce cleaning difficulty. The upper body section and the transition section, as well as the transition section and the inspection section, are bonded together by hot-melt adhesive film. Water-resistant polyolefin hot-melt adhesive film is selected and hot-pressed at a constant temperature of 130℃ to adapt to the usage scenarios of repeated washing and winding replacement. Two second motors 11 drive the horizontal roll roller 10 to rotate, and with the guidance transmission of the first guide roller 22 and the second guide roller 23, the automatic winding and replacement of the second bed cloth 12 can be realized, so that the functional area of ​​the second bed cloth 12 can accurately correspond to the laying area of ​​the upper bed 2 and the lower bed 3, and realize the automated and standardized laying of the bed cloth. The first sheet 7 is laid on top of the second sheet 12 to form a double-layer sheet protection, further enhancing the anti-pollution effect; The second nozzle 13 is arrayed on the upper bed 2; The axis of the second nozzle 13 is perpendicular to the axis of the horizontal roll 10, and the longitudinal roll 4 is set perpendicular to the horizontal roll 10. Two multi-section articulated arms 14, each of which is equipped with a lower limb support 15 and a jet manifold 16, with nozzles arrayed on the bottom surface of the jet manifold 16; The multi-section articulated arm 14 includes a large arm rotatably connected to the lower body bed 3, a middle arm rotatably mounted on the large arm, a forearm rotatably connected to the middle arm, a lower limb support 15 fixedly mounted on the forearm, and angle locking knobs fixedly mounted on the lower body bed 3, the large arm and the middle arm. The air inlet end of the jet pipe 16 is rotatably connected to the large arm through a rotary joint. The multi-section curved arm 14 is composed of the upper arm, middle arm and forearm connected in sequence. With the angle locking knobs of each connection part, the height, angle and position of the lower limb support 15 can be flexibly adjusted. It can adapt to patients of different heights and body types, provide personalized support and fixation for the patient's lower limbs, and allow the patient to maintain a comfortable and stable position during the examination, which is convenient for doctors to perform the examination. The air inlet of the jet shank 16 is connected to the main arm via a rotary joint, allowing the jet shank 16 to rotate synchronously with the angle adjustment of the multi-section curved arm 14. This ensures that the air outlet direction of the nozzle can accurately correspond to the corresponding area of ​​the patient's lower limbs and the bed sheet, achieving targeted air drying and cleaning, and improving the flexibility and adaptability of the equipment.

[0024] The positive pressure air supply unit is configured to achieve positive pressure air output from the first nozzle 9, the second nozzle 13, and the nozzle. The positive pressure air supply unit includes a blower 24 mounted on the base frame 1. An air filter is installed at the air inlet of the blower 24, and an electric heating wire is provided at the air outlet of the blower 24 and connected to a multi-port hose. The lower bed 3 has a first cavity 36 inside that communicates with the first nozzle 9, and the upper bed 2 has a second cavity 37 inside that communicates with the second nozzle 13. A flow channel is provided on the upper arm that communicates with the jet branch pipe 16. The first cavity 36, the second cavity 37 and the flow channel are all connected to the multi-port hose. The blower 24, in conjunction with the air filter, provides a clean air source, preventing impurities in the air from contaminating the bed sheets and equipment. The heating wire at the air outlet can heat the air, enabling the switching between cold and hot air supply. The outlet air pressure of blower 24 is 0.5MPa, and the outlet air temperature of blower 24 can be adjusted and set by the main controller; The multi-channel hose delivers heated cleaning air to the first cavity 36, the second cavity 37 and the flow channel of the upper arm, and finally blows the air out through the first nozzle 9, the second nozzle 13 and the nozzle under positive pressure, so as to achieve full coverage of the bed sheet. This can dry the bed sheet, prevent dampness from growing bacteria, and blow away impurities on the surface of the bed sheet, thus improving the cleanliness of the bed sheet. The positive pressure air outlet design makes the airflow stronger, resulting in higher drying and cleaning efficiency. The integrated air supply and delivery structure makes the air duct layout of the equipment more compact, improving the integration level of the equipment.

[0025] Simultaneously with the activation of the automatic order changing mechanism, the vibrating roller applies high-frequency vibration at a frequency of 50-80Hz to the surface of the bed fabric. Tests have shown that this vibration amplitude effectively breaks down the adhesion between bed dust, hair, and bed fabric fibers, resulting in a loosening rate of over 95% for attached impurities.

[0026] Simultaneously, the first nozzle 9 and the second nozzle 13, located beneath the sheet, open synchronously, forming an air cushion layer with a positive pressure airflow of 0.3MPa-0.5MPa. This airflow not only instantly blows away tiny particles (such as dander and dust) shaken off the sheet surface by the vibrating roller, but also performs directional cleaning of the fabric surface through the jet branch pipes 16 installed on the multi-section curved arm. Experimental data shows that after this comprehensive cleaning, the number of residual particles (≥10μm) on the sheet surface is less than 50 particles / ㎡. Compared with the traditional sheet changing method that relies solely on rolling, the cleaning efficiency is improved by approximately 80%, effectively eliminating the risk of cross-infection.

[0027] To address the potential issue of fluid residue during gynecological examinations, this invention integrates a self-cleaning and drying function. After the vibrating roller completes its physical shaking action, the first nozzle 9 and the air jet branch pipe 16 switch to a heating and drying mode, outputting hot air at a temperature of 40℃-60℃.

[0028] The hot air creates a uniform forced convection heat exchange zone on the surface of the bed sheet. In actual testing, for simulated bodily fluid stains with a moisture content of 10ml, the drying module of this system can reduce the moisture content of the bed sheet to the ambient humidity level (relative humidity ≤10%) within 8-12 seconds, with a drying efficiency more than 20 times that of natural air drying. This active drying mechanism completely solves the problem of bacteria growth and patient discomfort caused by damp bed sheets in traditional bed sheets, ensuring that every newly changed bed sheet is in a clean and dry initial state.

[0029] The washing and regeneration unit is configured to perform water washing and heat drying of the second sheet 12; The cleaning and regeneration unit includes a maintenance box 25 fixedly mounted on the upper bed 2. The maintenance box 25 has a liquid storage chamber 26. Two brush rollers 27 are rotatably connected to the liquid storage chamber 26. Each of the two brush rollers 27 has an array of water washing holes 28. Spiral brushes 29 are fixedly mounted on each of the two brush rollers 27. The spiral directions of the two spiral brushes 29 are opposite. An extrusion cam 30 is rotatably connected to the upper bed 2. The extrusion cam 30 is in contact with the second bed cloth 12. A synchronous belt is driven to a second guide roller 23. The extrusion cam 30 and the two brush rollers 27 are all driven to the synchronous belt. A circulation pump 31 connected to the liquid storage chamber 26 is installed on the side of the maintenance box 25. The outlet port of the circulation pump 31 is connected to the water washing holes 28. An electric heating table 32 is installed on the side of the maintenance box 25. A water washing channel is provided at the axial position of the brush roller 27. The outlet port of the circulating pump 31 is connected to a three-way pipe 33. The other two ends of the three-way pipe 33 are respectively rotatably connected to two water washing channels. A drain valve is connected to the bottom surface of the liquid storage chamber 26, and a replenishment valve is connected to the top of the liquid storage chamber 26.

[0030] The washing and recycling unit can achieve water washing and heat drying of the second bed sheet 12 without manual disassembly and cleaning, thus realizing the autonomous maintenance of the second bed sheet 12. The second guide roller 23 drives the extrusion cam roller 30 and the two brush rollers 27 to rotate synchronously via a synchronous belt. The spiral brushes 29 of the two brush rollers 27 are in opposite directions, which can perform bidirectional brushing on the second bed cloth 12 that has passed through, thereby improving the cleaning effect. The circulating pump 31 sprays the cleaning liquid from the storage chamber 26 through the three-way pipe 33 and the water washing channel from the water washing hole 28 to form high-pressure water washing, which, together with the brush washing, achieves deep cleaning of the second bed cloth 12. The extrusion roller 30 can drive the second bed cloth 12 to be forcibly deformed before washing, thereby forcibly deforming and peeling off the dirt adhering to the surface of the second bed cloth 12. The electric heating table 32 on the side of the maintenance box 25 can release heat to heat dry the second bed cloth 12 after washing, ensuring that the second bed cloth 12 can quickly return to a dry state after cleaning and can be put back into use. In a preferred embodiment, the operating temperature of the heating stage 32 is 45°C; The drain valve of the liquid storage chamber 26 facilitates the discharge of the cleaning liquid after use, and the replenishment valve can replenish the cleaning liquid in a timely manner, realizing the recycling and convenient replacement of the cleaning liquid, improving the ease of use of the cleaning and regeneration unit, extending the service life of the second bed sheet 12, and reducing the cost of use. The pre-spray unit is configured to spray the second bed fabric 12 with anti-stick liquid.

[0031] The pre-spray unit includes a headrest box 34 fixed on the upper bed 2. The headrest box 34 has a protective liquid storage chamber 35. The protective liquid storage chamber 35 integrates a pump body. The outlet port of the pump body is connected to a spray pipe. The spray pipe is located above the second bed cloth 12.

[0032] In a preferred embodiment, the vertical distance between the spray pipe and the surface of the second bed cloth 12 is 10cm to ensure uniform spraying; The protective liquid reservoir 35 inside the headrest box 34 stores anti-stick liquid. The integrated pump sprays the anti-stick liquid through the spray pipe onto the corresponding area of ​​the second bed cloth 12, which can form an anti-stick protective film on the surface of the second bed cloth 12, effectively preventing mucus, secretions and other substances from adhering to the second bed cloth 12 during the inspection process, reducing the degree of contamination of the second bed cloth 12 and reducing the difficulty of cleaning. The spraying operation of the protective liquid can be controlled by the main controller to achieve automated spraying without manual operation, thereby improving the automation level of the equipment. Furthermore, the spray pipe is located above the second bed cloth 12, which can achieve uniform spraying of the protective liquid, ensure the protective effect, further enhance the anti-pollution capability of the second bed cloth 12, and extend the service life of the second bed cloth 12.

[0033] The anti-adhesion liquid stored in the protective liquid reservoir (35) is selected from one or more of the following: anti-adhesion liquid, antibacterial liquid, lubricating liquid, anti-adhesion liquid, self-cleaning coating liquid, anti-blood adhesion liquid, and anti-secretion adhesion liquid; The specific steps for using this invention are as follows: The gynecological examination bed of the present invention with automatic sheet changing is based on the base frame 1. The angle of the hinged upper bed 2 and lower bed 3 can be flexibly adjusted by the angle adjustment push rod 17 to adapt to different gynecological examination position requirements. When in use, the automatic operation of the equipment can be achieved by using the foot pedal control switch 19 in conjunction with the main controller. When the equipment is working, on the one hand, the two first motors 5 of the lower bed 3 drive the longitudinal rollers 4 to rotate, thereby driving the base belt 6 to realize the automatic replacement of the first bed cloth 7. The base belt 6 and the first bed cloth 7 are attached by Velcro, which can realize the independent installation and removal of a single bed cloth. At the same time, the excitation roller 8 of the lower bed 3 vibrates under the drive of the internal excitation motor, shaking off the surface dirt of the first bed cloth 7. The first spray hole 9, in conjunction with the positive pressure air supply unit, blows away the dirt and dries the first bed cloth 7. On the other hand, the second motors 11 of the upper bed 2 and the lower bed 3... The drive roller 10 rotates and works with the guide roller to automatically roll and replace the second bed cloth 12. Different sections of the functional area of ​​the second bed cloth 12 are made of different suitable materials, and the first bed cloth 7 is laid on top of the second bed cloth 12 to form a double layer of protection. The blower 24 of the positive pressure air supply unit is filtered by the air filter and heated by the heating wire. The clean air is delivered to the nozzles of the first nozzle 9, the second nozzle 13 and the air jet branch pipe 16 of the multi-section curved arm 14 through the multi-port hose to achieve air blowing cleaning and drying of the entire area of ​​the first bed cloth 7 and the patient's lower limb area. The multi-section curved arm 14 can flexibly adjust the position of the lower limb support 15 and ensure the precise air outlet direction of the nozzle. At the same time, the cleaning and regeneration unit of the equipment can drive the brush roller 27 and the extrusion cam 30 to rotate through the second guide roller 23 and the synchronous belt. The extrusion cam 30 first peels off the dirt adhering to the surface of the second bed cloth 12. The brush roller 27, together with the cleaning liquid delivered by the circulating pump 31, realizes high-pressure water washing and bidirectional brushing. Then, the second bed cloth 12 is automatically cleaned and maintained by the electric heating table 32. The pre-spraying unit uses the pump in the headrest box 34 to spray the anti-adhesion liquid evenly on the surface of the second bed cloth 12 through the spray pipe to form an anti-adhesion protective film, avoid the adhesion of mucus and other substances, and reduce bed cloth pollution. The various mechanisms work together to realize the automatic replacement of the gynecological examination bed sheet, the cleaning and drying of the bed cloth and the anti-adhesion protection. The whole process is automated, improving the efficiency of diagnosis and treatment and hygiene and safety.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gynecological examination bed with an automatic sheet-changing mechanism, comprising a base frame (1) on which an adjustable upper bed (2) and a lower bed (3) are mounted, characterized in that, Also includes: Two longitudinal rollers (4) are rotatably connected to the lower bed (3). Two first motors (5) are installed on the lower bed (3). The output shafts of the two first motors (5) are fixedly connected to the two longitudinal rollers (4). A base belt (6) is wound between the two longitudinal rollers (4). Multiple first bed fabrics (7) are bonded to the base belt (6). A set of excitation rollers (8) are rotatably connected to the lower bed (3), and the lower bed (3) is provided with first spray holes (9) in an array at the position corresponding to the position below the excitation rollers (8). Two horizontal rollers (10) are rotatably connected to the upper bed (2) and the lower bed (3) respectively. A second motor (11) is fixedly installed on the side of both the upper bed (2) and the lower bed (3). The output shaft ends of the two second motors (11) are fixedly connected to the two horizontal rollers (10) respectively. A second bed cloth (12) is wound between the two horizontal rollers (10). Multiple functional areas are arranged in an array on the second bed cloth (12). Each functional area includes an upper body section, a transition section and an inspection section connected in sequence. The second nozzle (13) is arrayed on the upper bed (2); Two multi-section articulated arms (14), each of which is equipped with a lower limb support (15) and a jet manifold (16). The positive pressure air supply unit is configured to achieve positive pressure air output from the first nozzle (9), the second nozzle (13), and the nozzle; The washing and regeneration unit is configured to perform water washing and heat drying of the second sheet (12); The pre-spray unit is configured to spray the second bed fabric (12) with anti-stick liquid.

2. The gynecological examination bed with automatic sheet changing capability according to claim 1, characterized in that, The upper bed (2) is hinged to the lower bed (3) via a first hinge shaft, and the lower bed (3) is hinged to the base frame (1) via a second hinge shaft. An angle adjustment push rod (17) is hinged between the base frame (1) and the upper bed (2) and between the base frame (1) and the lower bed (3). Two pads (18) are fixedly installed on the lower bed (3).

3. The gynecological examination bed with automatic sheet changing capability according to claim 1, characterized in that, The base frame (1) is fixedly installed with a main controller and a foot control switch (19). The data terminal of the foot control switch (19) is connected to the main controller. The base frame (1) is fixedly installed with a ladder frame (20) and four universal brake wheels (21). The lower bed (3) is rotatably connected with a first guide roller (22). The upper bed (2) is rotatably connected with two second guide rollers (23). The first guide roller (22) and the second guide roller (23) are both connected to the second bed cloth (12) for transmission.

4. A gynecological examination bed with automatic sheet changing capability according to claim 1, characterized in that, The multi-section curved arm (14) includes a large arm rotatably connected to the lower body bed (3), a middle arm rotatably mounted on the large arm, a forearm rotatably connected to the middle arm, a lower limb support (15) fixedly mounted on the forearm, and angle locking knobs fixedly mounted on the lower body bed (3), the large arm and the middle arm. The air inlet end of the jet pipe (16) is rotatably connected to the large arm through a rotary joint, and nozzles are arrayed on the bottom surface of the jet pipe (16).

5. A gynecological examination bed with automatic sheet changing capability according to claim 3, characterized in that, The positive pressure air supply unit includes a blower (24) installed on the base frame (1). The air inlet of the blower (24) is equipped with an air filter. The air outlet of the blower (24) is provided with a heating wire and connected to a multi-port hose. The lower body bed (3) has a first cavity (36) connected to the first nozzle (9) inside. The upper body bed (2) has a second cavity (37) connected to the second nozzle (13) inside. The upper arm has a flow channel connected to the jet branch pipe (16). The first cavity (36), the second cavity (37) and the flow channel are all connected to the multi-port hose.

6. A gynecological examination bed with automatic sheet changing capability according to claim 1, characterized in that, The excitation roller (8) integrates an excitation motor. The excitation roller (8) is arranged in parallel with the longitudinal roll roller (4). A ventilation gap that cooperates with the first spray hole (9) is fixed between two adjacent excitation rollers (8). The axis of the first spray hole (9) is perpendicular to the axis of the longitudinal roll roller (4). The axis of the second spray hole (13) is perpendicular to the axis of the transverse roll roller (10). The longitudinal roll roller (4) and the transverse roll roller (10) are arranged perpendicularly.

7. A gynecological examination bed with automatic sheet changing capability according to claim 1, characterized in that, The cleaning and regeneration unit includes a maintenance box (25) fixedly mounted on the upper bed (2). The maintenance box (25) has a liquid storage chamber (26) inside. Two brush rollers (27) are rotatably connected to the liquid storage chamber (26). Water washing holes (28) are arrayed on both brush rollers (27). Spiral brushes (29) are fixedly installed on both brush rollers (27). The spiral directions of the two spiral brushes (29) are opposite. An extrusion convex roller is rotatably connected to the upper bed (2). (30) The extrusion cam (30) is attached to the second bed cloth (12), and a synchronous belt is connected to one of the second guide rollers (23). The extrusion cam (30) and the two brush rollers (27) are both connected to the synchronous belt. A circulation pump (31) connected to the liquid storage chamber (26) is installed on the side of the maintenance box (25). The outlet port of the circulation pump (31) is connected to the water washing hole (28). An electric heating table (32) is installed on the side of the maintenance box (25).

8. A gynecological examination bed with automatic sheet changing capability according to claim 6, characterized in that, A water washing channel is provided at the axial position of the brush roller (27), and a three-way pipe (33) is connected to the outlet port of the circulating pump (31). The other two ends of the three-way pipe (33) are respectively rotatably connected to the two water washing channels. A drain valve is connected to the bottom surface of the liquid storage chamber (26), and a replenishment valve is connected to the top of the liquid storage chamber (26).

9. A gynecological examination bed with automatic sheet changing capability according to claim 1, characterized in that, The pre-spraying unit includes a headrest box (34) fixed on the upper bed (2), a protective liquid storage chamber (35) is provided in the headrest box (34), a pump body is integrated in the protective liquid storage chamber (35), and the outlet port of the pump body is connected to a spray pipe. The spray pipe is located above the second bed cloth (12).

10. A gynecological examination bed with automatic sheet changing capability according to claim 1, characterized in that, The upper body section, transition section and inspection section are made of different materials. The outer surface of the base belt (6) is fixedly provided with a hook and loop fastener, and the bottom surface of the first bed sheet (7) is fixedly provided with a hook and loop fastener that is bonded to the hook and loop fastener.

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