A prone ventilation therapy aid device

Abstract

This invention discloses a prone ventilation therapy auxiliary device, belonging to the field of medical devices, comprising: two parallel back plates with sliding grooves on them; a first connecting shaft and a second connecting shaft disposed between the back plates; a third connecting shaft slidably connected to the sliding grooves; a first telescopic rod with its two ends rotatably connected to the second and third connecting shafts respectively; multiple support units rotatably connected to the first connecting shaft; and a second telescopic rod with its two ends rotatably connected to the support units and the third connecting shaft respectively. When the second telescopic rod extends or retracts, it drives the connected support units to rotate around the first connecting shaft relative to an initial position; when the first telescopic rod extends or retracts, it drives the connected third connecting shaft to move, and causes the second telescopic rod connected to it to rotate synchronously with the support units around the first connecting shaft. Through the above configuration, this invention enables convenient examination, dressing changes, ultrasound examinations, and other procedures on the patient's chest, abdomen, and other frontal trunk areas without changing the patient's overall prone position.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a prone ventilation therapy auxiliary device. Background Technology

[0002] In the intensive care unit, prone positioning ventilation is a key therapy for treating severe hypoxemia caused by acute respiratory distress syndrome and other conditions. By changing the patient's position, it allows the dorsal alveoli to re-expand, improving the ventilation / perfusion ratio and thus effectively increasing the patient's oxygenation level.

[0003] Currently, prone ventilation in clinical practice mainly relies on two methods: the first is a bed that allows for complete patient repositioning, such as the medical bed disclosed in existing technology CN114099176A. This bed achieves complete supine-prone rotation of the patient through the linkage of a first repositioning board assembly, a second repositioning board assembly, and a middle board assembly. However, it is mainly used for overall positional switching. When the patient is in the prone position, if chest and abdominal examinations, dressing changes, pressure ulcer assessments, or decompression of the distended abdomen are required, the patient must be turned back to the supine position to perform these procedures. This not only interrupts treatment but also increases the risk of tube dislodgement.

[0004] Secondly, there are hospital beds that allow for zoned adjustment of the patient's posture, such as the treatment device for automatically and precisely adjusting body position disclosed in prior art CN119548346A. This device divides the treatment pad into four main units, which are driven by an electric telescopic rod to achieve back lifting and overall lateral tilting. However, the rotation angle of the main units in this device is limited by the support frame, making it impossible to achieve individual exposure of the chest and abdomen areas while maintaining the prone main posture.

[0005] Therefore, there is an urgent need for a support platform that can selectively expose specific parts of the body for medical procedures while maintaining a stable prone ventilation treatment state for the patient. Specifically, such a support platform is a prone ventilation treatment auxiliary device. Summary of the Invention

[0006] The present invention aims to overcome the deficiencies of the existing technology and mainly solves the following technical problems:

[0007] First, how to conveniently perform examinations, dressing changes, ultrasound examinations, and other procedures on the patient's chest, abdomen, and other frontal trunk areas without changing the patient's overall prone position, thereby avoiding interruption of ventilation treatment and reducing the risk of tube dislodgement;

[0008] Secondly, how to effectively reduce intra-abdominal pressure in patients in the prone position, especially obese patients, to provide space for the distended abdomen and reduce the risk of vomiting and aspiration during enteral nutrition therapy.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0010] A prone ventilation therapy aid device includes: a bed frame, including two parallel back panels, each back panel having a sliding groove;

[0011] The first connecting shaft and the second connecting shaft are arranged in parallel between the two back plates and are used to connect the back plates.

[0012] At least two third connecting shafts, the two ends of which are slidably connected to the grooves on the back plate;

[0013] A first telescopic rod, one end of which is rotatably connected to the second connecting shaft, and the other end of which is rotatably connected to a third connecting shaft; when the first telescopic rod extends or retracts, it drives the corresponding third connecting shaft to move along the slide groove;

[0014] Multiple support units are rotatably connected to the first connecting shaft and have an initial horizontally unfolded position;

[0015] The second telescopic rod has one end rotatably connected to one of the support units and the other end rotatably connected to one of the third connecting shafts;

[0016] When the second telescopic rod extends or retracts, it drives the support unit connected to it to rotate around the first connecting shaft relative to the initial position; when the first telescopic rod extends or retracts, it drives the third connecting shaft connected to it to move, thereby driving all the second telescopic rods and support units connected to the third connecting shaft to rotate synchronously around the first connecting shaft.

[0017] Furthermore, the first telescopic rod and the second telescopic rod are electric push rods with a self-locking function. The electric push rod includes an output shaft, and the self-locking function is realized through a built-in worm gear mechanism. When the power supply is stopped, the output shaft can be locked in the current position.

[0018] Furthermore, the first telescopic rod and the second telescopic rod are electric push rods; the device also includes a control module and a power supply module disposed between the back plates, and the electric push rod, the control module and the power supply module are electrically connected.

[0019] Furthermore, the support unit has a support surface for supporting the patient, and an elastic pad is provided on the support surface.

[0020] Furthermore, at least one of the support units located in the human torso projection area has a smaller dimension along the first connecting axis than the support unit located in the human lower limb projection area, and the number of support units in the human lower limb projection area is at least two.

[0021] Furthermore, the support unit includes a pair of support units located in the projection area of ​​the human abdomen, and there are at least two support units located in the projection area of ​​the human abdomen, the size of which along the first connecting axis is larger than that of the pair of support units located in the projection area of ​​the human chest.

[0022] Furthermore, the paired support units located in the human chest projection area and the paired support units located in the human head projection area have the same dimensions along the first connecting axis; there are at least two support units in both the human chest projection area and the head projection area.

[0023] Furthermore, it also includes multiple fixation straps for securing the patient to the support unit; the fixation straps are arranged across the multiple support units and their length is adjustable.

[0024] Furthermore, the bottom of the bed frame is equipped with multiple casters with locking function.

[0025] Furthermore, it also includes a method for preventing pressure ulcers using this device, comprising the following steps:

[0026] S1. During treatment in the prone position, control the second telescopic rods corresponding to the multiple support units to perform alternating telescopic movements in a predetermined order and timing.

[0027] S2, where, in one loop:

[0028] S2.1 Control the second telescopic rod corresponding to one or more current target support units to retract for a predetermined time, so that the current target support unit rotates downward to relieve or reduce its support pressure on the corresponding part of the patient's body;

[0029] S2.2 After the predetermined time period ends, control the second telescopic rod corresponding to the current target support unit to extend and return it to the support position;

[0030] S2.3. Then, switch to the next target support unit and repeat the above steps; through this cycle, the pressure on various parts of the patient's body is periodically and alternately relieved or reduced to prevent pressure sores.

[0031] The beneficial effects of this invention are:

[0032] 1. This invention features at least two third connecting shafts for lateral control, and first and second telescopic rods connected to the third connecting shafts and support units respectively. Together, these form a two-tiered control system that allows for overall control of all support units on one side, as well as individual control of the posture of a specific support unit. This allows for simultaneous lifting of all support units on one side to achieve overall lateral turning while maintaining the patient's prone position, and also enables independent control of any support unit to rotate downwards to expose specific body parts. This effectively solves the problems of traditional turning beds, such as the need to interrupt treatment for examinations and repeated patient turning leading to treatment interruptions, high risk of tube dislodgement, and high labor costs.

[0033] 2. This invention uses a self-locking electric push rod composed of a motor and a worm gear mechanism as the drive source for the first and second telescopic rods. Combined with the control module and power supply module located between the back plates, it can lock the output shaft and support unit in any current position by means of pure mechanical means when the power supply is stopped, thereby providing an absolutely reliable maintenance of the treatment posture. This effectively solves the safety hazard of patient position loss due to accidental power failure or system failure, and greatly reduces the operation threshold and manpower requirements.

[0034] 3. The present invention is equipped with support units of different sizes and combined with a cross-shaped, adjustable-length fixing strap, which can provide differentiated and stable support for the patient's head, chest, abdomen and lower limbs, while ensuring that the patient can be effectively prevented from slipping during body position adjustment. This helps to solve the problem of adaptive support for patients of different body types, and takes into account both patient comfort and operation safety when achieving precise local exposure and overall posture adjustment. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0036] Figure 1 This is an out-of-body view of an assembly structure of the present invention when each support unit moves away from its initial position in different directions;

[0037] Figure 2 This is a front view of an assembly structure of the present invention when each support unit is disengaged from its initial position in different directions;

[0038] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure along direction A.

[0039] Figure 4 for Figure 2 A schematic diagram of the cross-sectional structure along the B direction;

[0040] Figure 5 This is an out-of-body view of an assembly structure of the present invention with all supporting units in their initial positions;

[0041] Figure 6 This is a perspective view of an assembly structure when the support unit of the present invention is connected to a fixing strap;

[0042] In the diagram, 1 is the bed frame; 11 is the back panel; 111 is the slide rail; 12 is the control module; 121 is the cable; 13 is the power supply module; 14 is the caster wheel; 2 is the first connecting shaft; 3 is the second connecting shaft; 4 is the third connecting shaft; 5 is the first telescopic rod; 51 is the sleeve; 52 is the output shaft; 53 is the worm gear mechanism; 54 is the motor; 6 is the second telescopic rod; 7 is the support unit; 71 is the support surface; 711 is the elastic pad; and 712 is the fixing strap. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention are clearly and completely described below through specific examples. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] A prone ventilation therapy aid device, such as Figure 1-6 As shown, the device includes: a bed frame 1, comprising two parallel backrests 11, preferably made of high-strength aluminum alloy; each backrest 11 is provided with a groove 111, which is specifically a vertical capsule-shaped recess or a through groove, or the groove 111 is arc-shaped. The bottom of the bed frame 1 is provided with multiple casters 14 with locking function. The casters 14 are preferably medical-grade double-brake casters 14, which have both wheel locking and direction locking functions, and there are four to six of them, evenly distributed at the bottom of the bed frame 1. This allows the device to be easily moved within the ICU ward, and after reaching the designated location, locking the casters 14 makes it a stable treatment platform.

[0045] The first connecting shaft 2 and the second connecting shaft 3 are arranged in parallel between the two back plates 11 for connecting the back plates 11. At least two third connecting shafts 4, the first connecting shaft 2, the second connecting shaft 3 and the third connecting shaft 4 constitute a connecting shaft system. The two ends of the third connecting shaft 4 are slidably connected to the slide grooves 111 on the back plate 11. The sliding third connecting shafts 4 arranged on both sides are the core structural basis for realizing two-level control of overall linkage and local single movement.

[0046] The first telescopic rod 5 has one end rotatably connected to the second connecting shaft 3 and the other end rotatably connected to a third connecting shaft 4. When the first telescopic rod 5 extends or retracts, it drives the corresponding third connecting shaft 4 to move along the slide groove 111. The number of first telescopic rods 5 on one side is at least three. Multiple telescopic rods are equally spaced along the axial direction of the second connecting shaft 3, so that the pressure on the third connecting shaft 4 can be evenly distributed to the second connecting shaft 3 and transmitted to the bed frame 1 and the ground through the second connecting shaft 3.

[0047] Multiple support units 7 are rotatably connected to the first connecting shaft 2. Each support unit 7 is a plate-like structure and is rotatably connected to the first connecting shaft 2 via hinges or bearings. All support units 7 together form a support plane for the patient and have a horizontal initial position.

[0048] The second telescopic rod 6 has one end rotatably connected to a support unit 7 and the other end rotatably connected to a third connecting shaft 4.

[0049] When the second telescopic rod 6 extends or retracts, it drives the support unit 7 connected to it to rotate around the first connecting shaft 2 relative to the initial position; when the first telescopic rod 5 extends or retracts, it drives the third connecting shaft 4 connected to it to move, thereby driving all the second telescopic rods 6 and support units 7 connected to the third connecting shaft 4 to rotate synchronously around the first connecting shaft 2.

[0050] In some embodiments of this application, such as Figure 1-6As shown, the first telescopic rod 5 and the second telescopic rod 6 are electric push rods with a self-locking function. Each electric push rod includes an output shaft 52; specifically, it includes a motor 54 that rotates when powered, serving as the drive source for extending and retracting the electric push rod; a worm gear mechanism 53 rotatably connected to the rotor of the motor 54 and the output shaft 52 to adjust the speed and for transmission; and a sleeve 51 housing the output shaft 52 and the worm gear mechanism 53. The motor 54 is fixed outside the sleeve 51, and its rotor drives the worm gear through a coupling. The worm gear meshes with the worm wheel fixed on the output shaft 52, converting the rotational motion of the motor 54 into the linear motion of the output shaft 52. Because the worm gear mechanism 53 has the characteristic of irreversible transmission, when the motor 54 stops supplying power, the output shaft 52 is mechanically locked in its current position and cannot be pushed by external force. This effectively maintains the patient's treatment posture and solves the safety hazard of loss of patient position due to accidental power outages or system failures during adjustment.

[0051] The self-locking function is achieved through a built-in worm gear mechanism 53, which locks the output shaft 52 in its current position when power is cut off. By setting an electric push rod with a self-locking function, the support unit 7 can be maintained in the position when the first telescopic rod 5 and the second telescopic rod 6 are de-energized, thus maintaining the patient's posture without the need for additional locking components.

[0052] In some embodiments of this application, such as Figure 1-6 As shown, the first telescopic rod 5 and the second telescopic rod 6 are electric push rods. The device also includes a control module 12 and a power supply module 13 disposed between the back plates 11. The electric push rods, control module 12, and power supply module 13 are electrically connected. By setting the electric push rods as the driving source and the control architecture consisting of control module 12 and power supply module 13, the automatic adjustment of the patient's posture is realized. Control module 12 and power supply module 13 can be integrated into a box between the back plates 11. Control module 12 is electrically connected to the motors 54 of all electric push rods via cable 121, while power supply module 13 supplies power to the entire system. Medical staff can send commands to control module 12 via a wired remote control or wireless terminal to control the movement of any telescopic rod. The integrated electrical control scheme simplifies the adjustment of multi-degree-of-freedom body positions, greatly reducing the operational threshold and manpower requirements.

[0053] In some embodiments of this application, such as Figure 1-6As shown, the support unit 7 has a support surface 71 for supporting the patient, and an elastic pad 711 is provided on the support surface 71. The elastic pad 711 is made of medical-grade silicone or slow-rebound memory foam, with a thickness of 3-5 cm. It provides a soft touch, avoids pressure concentration, and also has a certain degree of support to prevent excessive sinking. This not only improves patient comfort but also effectively prevents pressure sores. By adding the elastic pad 711, which covers the support surface 71, it helps to solve the comfort and pressure relief problems of prone patients receiving treatment and provides comfortable support for the patient.

[0054] In some embodiments of this application, such as Figure 1-6 As shown, at least one support unit 7 located in the projection area of ​​the human torso has a smaller dimension along the first connecting axis 2 than the support unit 7 located in the projection area of ​​the human lower limbs, and the number of support units 7 in the projection area of ​​the human lower limbs is at least two. By limiting the size difference of the support units 7 in different areas, a fine modular division is constructed. In addition, the smaller torso support unit 7 is beneficial for more precise exposure of small areas such as a unilateral thoracic cavity or upper abdomen, which is conducive to achieving more precise local exposure control.

[0055] In some embodiments of this application, such as Figure 1-6 As shown, the support unit 7 includes a pair of support units 7 located in the projection area of ​​the human abdomen. There are at least two support units 7 located in the projection area of ​​the human abdomen, and their dimensions along the first connecting axis 2 are larger than those of the pair of support units 7 located in the projection area of ​​the human chest. Based on the fact that the length of the support unit 7 corresponding to the upper limb is smaller than that of the support unit 7 corresponding to the lower limb, further subdivisions are made within the upper limb. By setting the length of the abdominal support unit 7 to be greater than that of the chest support unit 7, the chest unit can be made smaller, thereby enabling more precise exposure of the target area with smaller units when cardiopulmonary examinations or procedures are required, avoiding unnecessary exposure of the entire upper torso.

[0056] In some embodiments of this application, such as Figure 1-6As shown, the paired support units 7 located in the chest projection area and the paired support units 7 located in the head projection area have the same dimensions along the first connecting axis 2; there are at least two support units 7 in both the chest and head projection areas. Further refining the structural layout by setting the head and chest units to be of equal length helps to form a standardized modular design and also helps to reduce the production cost of the support units 7. Specifically, the support units 7 located in the head and chest projection areas have a length of at least 25 cm; the support units 7 located in the abdominal projection area have a length of at least 35 cm, which is greater than the chest units, providing ample support surface area 71 for the bulging abdomen and facilitating the use of elastic padding 711 to prevent the edges of the support platform from compressing the patient's limbs; the support units 7 located in the lower limb projection area have a length of at least 65 cm, making them the longest units and providing stable support for the lower limbs.

[0057] In some embodiments of this application, such as Figure 1-6 As shown, the system also includes multiple securing straps 712 for securing the patient to the support unit 7. The securing straps 712 span multiple support units 7 and their length is adjustable. The securing straps 712 are made of nylon and are equipped with adjustable straps with plastic buckles. In another embodiment, the securing straps 712 are elastic medical spandex webbing. During use, the securing straps 712 should span the patient's thighs, buttocks, and upper back. When performing unilateral lifting or other posture adjustments, the restraint force balances the slippage force generated by the patient's weight, fundamentally preventing the patient from slipping and ensuring operational safety.

[0058] In addition, a method for preventing pressure ulcers using this device is also included, comprising the following steps:

[0059] S1. During treatment in the prone position, control the second telescopic rods 6 corresponding to multiple support units 7 to perform alternating telescopic movements in a predetermined order and timing.

[0060] S2, where, in one loop:

[0061] S2.1 Control the second telescopic rod 6 corresponding to one or more current target support units 7 to retract for a predetermined time, so that the current target support unit 7 rotates downward to relieve or reduce its support pressure on the corresponding part of the patient's body;

[0062] S2.2 After the predetermined time has elapsed, control the extension of the second telescopic rod 6 corresponding to the current target support unit 7, so that it returns to the support position;

[0063] S2.3. Subsequently, switch to the next target support unit 7 and repeat the above steps; through this cycle, the pressure on various parts of the patient's body is periodically and alternately relieved or reduced to prevent pressure ulcers. This proactively prevents pressure ulcers without requiring turning or interrupting ventilation. Alternating stretching and contraction movements follow a sequence from the patient's head to the lower limbs or from the lower limbs to the head. In one cycle, the currently moving target support units 7 are non-adjacent support units 7.

Claims

1. A prone ventilation therapy auxiliary device, characterized in that, include: The bed frame includes two parallel back panels, each with a groove. The first connecting shaft and the second connecting shaft are arranged in parallel between the two back plates and are used to connect the back plates. At least two third connecting shafts, the two ends of which are slidably connected to the grooves on the back plate; A first telescopic rod, one end of which is rotatably connected to the second connecting shaft, and the other end of which is rotatably connected to a third connecting shaft; when the first telescopic rod extends or retracts, it drives the corresponding third connecting shaft to move along the slide groove; Multiple support units are rotatably connected to the first connecting shaft and have an initial horizontally unfolded position; The second telescopic rod has one end rotatably connected to one of the support units and the other end rotatably connected to one of the third connecting shafts; When the second telescopic rod extends or retracts, it drives the support unit connected to it to rotate around the first connecting shaft relative to the initial position; when the first telescopic rod extends or retracts, it drives the third connecting shaft connected to it to move, thereby driving all the second telescopic rods and support units connected to the third connecting shaft to rotate synchronously around the first connecting shaft.

2. The prone ventilation therapy auxiliary device according to claim 1, characterized in that, The first telescopic rod and the second telescopic rod are electric push rods with a self-locking function. The electric push rod includes an output shaft. The self-locking function is realized by a built-in worm gear mechanism. When the power supply is stopped, the output shaft can be locked in the current position.

3. The prone ventilation therapy auxiliary device according to claim 2, characterized in that, The first telescopic rod and the second telescopic rod are electric push rods; the device also includes a control module and a power supply module disposed between the back plates, and the electric push rod, the control module and the power supply module are electrically connected.

4. The prone ventilation therapy auxiliary device according to claim 1, characterized in that, The support unit has a support surface for supporting the patient, and the support surface is provided with an elastic pad.

5. The prone ventilation therapy auxiliary device according to claim 1, characterized in that, At least one of the support units located in the projection area of ​​the human torso has a smaller dimension along the first connecting axis than the support unit located in the projection area of ​​the human lower limbs, and the number of support units in the projection area of ​​the human lower limbs is at least two.

6. The prone ventilation therapy auxiliary device according to claim 5, characterized in that, The support unit includes a pair of support units located in the projection area of ​​the human abdomen. There are at least two support units located in the projection area of ​​the human abdomen, and their dimensions along the first connecting axis are larger than those of the pair of support units located in the projection area of ​​the human chest.

7. The prone ventilation therapy auxiliary device according to claim 1, characterized in that, The paired support units located in the projection area of ​​the human chest and the paired support units located in the projection area of ​​the human head have the same dimensions along the first connecting axis. There are at least two support units located in the chest projection area and the head projection area of ​​the human body.

8. The prone ventilation therapy auxiliary device according to claim 1, characterized in that, It also includes multiple fixation straps for securing the patient to the support unit; the fixation straps are arranged across the multiple support units and their length is adjustable.

9. The prone ventilation therapy auxiliary device according to claim 1, characterized in that, The bottom of the bed frame is equipped with multiple casters with locking function.

10. A method for preventing pressure ulcers using the prone ventilation therapy aid device according to claim 1, characterized in that, Includes the following steps: S1. During treatment in the prone position, control the second telescopic rods corresponding to the multiple support units to perform alternating telescopic movements in a predetermined order and timing. S2, where, in one loop: S2.1 Control the second telescopic rod corresponding to one or more current target support units to retract for a predetermined time, so that the current target support unit rotates downward to relieve or reduce its support pressure on the corresponding part of the patient's body; S2.2 After the predetermined time period ends, control the second telescopic rod corresponding to the current target support unit to extend and return it to the support position; S2.3 After the corresponding second telescopic rod returns to the support position, switch to the next target support unit and repeat the above steps.

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