High-stability prone position ventilation device

Abstract

The invention relates to a medical auxiliary instrument. The high-stability prone position ventilation device comprises a support and a mounting plate arranged at the top of the support and further comprises a driving mechanism arranged on the mounting plate and a supporting mechanism driven by the driving mechanism. The driving mechanism comprises a spindle, one end of the spindle is in transmission connection with a driving motor through a speed reducer, and a sliding hole extending in the length direction of the spindle is formed in the other end of the spindle. A telescopic shaft matched with the sliding hole is arranged in the sliding hole; the telescopic shaft is in sliding fit with the main shaft; a driving wheel is fixedly arranged in the middle of the main shaft, and a rotating head is fixedly arranged at the overhanging end of the telescopic shaft. When prone position ventilation is kept for a long time, the head of a patient can be turned over stably and regularly, long-time single-side compression is prevented, the overhead design can reserve enough space for placement of pipelines such as an airway, and interference to the constructed artificial airway during turning over is avoided.

Description

Technical Field

[0001] The invention relates to a medical auxiliary device, in particular to a prone ventilation posture auxiliary device. Background Art

[0002] Prone ventilation refers to a method of mechanical ventilation in which the patient lies prone. This ventilation method is mainly suitable for patients with severe lung diseases such as acute respiratory distress syndrome, who cannot maintain the oxygenation required by the normal human body after high-intensity ventilator support. The advantage of this ventilation method is that it is conducive to blood-gas exchange in the lungs close to the back and improves oxygenation.

[0003] During prone ventilation, the contact area between the face and the bed or pillow is a relatively prominent bony protrusion; at the same time, because the patient loses consciousness, there is often exhaled moisture and saliva near the face. During the long-term prone ventilation, the risk of pressure sores and skin injuries is particularly high. Therefore, in clinical operations, the head is usually placed on the pillow in a lateral position, that is, the patient's head is tilted to one side, the patient's face is in contact with the pillow, and the airway is fully exposed. At regular intervals, the nursing staff flips the head and supports it with the other side of the face, alternating between the two sides, thereby avoiding damage caused by long-term compression and facilitating the alternating drainage of sputum.

[0004] However, this traditional manual operation method not only makes the workload of medical staff huge in the process of continuous repetition, but also the operation level is greatly disturbed by human factors, and the punctuality and stability need to be improved. Therefore, if a certain plan can be used to assist medical staff in automatically turning the patient's head during prone ventilation, it will be able to effectively solve the current clinical problems. Summary of the invention

[0005] The object of the present invention is to provide a high-stability prone position ventilation device which can assist medical personnel in automatically turning and supporting the patient's head.

[0006] To achieve the above-mentioned invention object, the technical solution adopted by the present invention is: a high-stability prone position ventilation device, comprising a bracket and a mounting plate arranged on the top of the bracket, and also comprising a driving mechanism arranged on the mounting plate, and a supporting mechanism driven by the driving mechanism;

[0007] The driving mechanism comprises a main shaft, one end of which is connected to the driving motor through a reducer, and the other end is provided with a sliding hole extending along the length direction of the main shaft; a matching telescopic shaft is provided in the sliding hole; the telescopic shaft and the main shaft form a sliding fit; a driving wheel is fixedly provided in the middle of the main shaft, and a rotating head is fixedly provided at the cantilevered end of the telescopic shaft;

[0008] The support mechanism includes an annular forehead band for supporting the patient's forehead and a face support assembly for supporting the patient's face; the forehead band is arranged at the driving wheel, and the upper part of the forehead band passes around the driving wheel, and the lower part is suspended under the mounting plate; the face support assembly is located below the rotating head, and the face support assembly includes two oppositely arranged, inverted L-shaped clamps that can be opened and closed, and a connecting block for connecting to the rotating head; the clamp is arranged at the bottom of the connecting block and is hinged with the connecting block.

[0009] Preferably, two driving rods are symmetrically arranged on the two side walls of the connecting block, one end of the two driving rods is hinged to the connecting block, and the other end is hinged to the clamping body; the driving rod includes a threaded sleeve and a screw rod which is inserted into the threaded sleeve and forms a threaded match with the threaded sleeve, and a rotating joint is arranged at one end of the threaded sleeve away from the screw rod.

[0010] Preferably, the connecting block and the rotating head are connected by an adaptive correction mechanism, and the adaptive correction mechanism includes a main rocker and a secondary rocker, the upper end of the main rocker is fixedly connected to the bottom of the rotating head, a lifting groove extending vertically is arranged at the center of one side of the main rocker, a lifting block slidingly matched with the lifting groove is arranged in the lifting groove, a pin hole penetrating the lifting block in the front-to-back direction is arranged at the center of the lifting block, and the top of the lifting block is connected to the top of the lifting groove through a pull-back spring; a pin groove extending vertically and penetrating the front and rear surfaces of the main rocker is also arranged in the lifting groove; the lower end of the secondary rocker is connected to The auxiliary rocker arm is connected with a connecting block, and a rotating pin is arranged on one side of the upper end of the auxiliary rocker arm, which matches with the pin hole on the lifting block and is perpendicular to the rod surface of the auxiliary rocker arm. The rotating pin extends into the pin groove and passes through the pin hole of the connecting block to form a rotating match with the lifting block; a washer and a nut are arranged at the cantilevered end of the rotating pin; the adaptive correction mechanism also includes two extrusion springs, which include a spring coil and two supporting legs distributed outside the spring coil in a centrally symmetrical manner; the spring coils of the two extrusion springs are sleeved outside the rotating pin and fixedly connected to the rotating pin; the supporting legs of the extrusion spring are distributed in a butterfly shape and press against the groove walls on both sides of the lifting groove.

[0011] Preferably, a gel cushion is provided on the inner surface of the clamp body.

[0012] Preferably, the inner surface of the forehead band corresponding to the patient's forehead is also provided with a gel pad.

[0013] Preferably, two recesses are provided on both sides of the mounting plate below the driving wheel, and a group of rotating guide rollers are provided in each of the two recesses, and the forehead band passes through the rotating guide rollers.

[0014] Preferably, the cross-sections of the sliding hole and the telescopic shaft are polygonal.

[0015] Preferably, a vertical plate is arranged in the middle of the top surface of the mounting plate, and a bearing seat is arranged on the top surface of one end of the mounting plate close to the telescopic shaft; the two ends of the main shaft are respectively passed through the bearings on the vertical plate and the bearing seat, forming a rotational fit with the vertical plate and the bearing seat.

[0016] Preferably, the bracket comprises two L-shaped supporting legs, and the upper ends of the vertical sides of the L-shape of the supporting legs are hinged to the mounting plate.

[0017] Preferably, the vertical side and the horizontal side of the L-shape of the supporting leg are hinged to each other, and the horizontal side is provided with a plurality of locking holes distributed in a fan shape around the hinge center at the hinge position, and an elastic locking pin is provided at a position opposite to the locking hole on the vertical side; the elastic locking pin can extend into the locking hole to form an angle locking for the horizontal side and the vertical side of the supporting leg;

[0018] The vertical side of the support leg is composed of two sections that form a sliding fit and can form a lock.

[0019] The beneficial effects of the present invention are concentrated in: when the patient is in the prone position for ventilation for a long time, the patient's head can be stably and regularly turned over to prevent long-term unilateral pressure, and the overhead design can leave enough space for the placement of airway and other pipelines, avoiding interference with the constructed artificial airway during the flip. Specifically, during the use of the present invention, when the patient is in the prone position for ventilation, the device is clamped near the patient's head, and the various parts should be kept away from the pipeline during the installation process; the patient's forehead is suspended and supported by the forehead strap, and the face is supported by the clamp from both sides. At this time, the patient's head is basically in a suspended state, and sufficient pipe laying space is reserved below, which will not interfere with the layout of artificial airway and other pipelines. The drive motor can alternately rotate forward and reverse at a regular time, thereby driving the main shaft and the telescopic shaft to rotate, and then driving the forehead strap and the face support assembly to move, so that the patient's head is alternately placed left and right. During the switching process, the main compressed side of the patient's skin can be alternately changed, thereby effectively avoiding compression damage caused by long-term force. The present invention can effectively assist medical staff in performing patient head flipping operations in clinical practice, greatly reducing workload and labor intensity, and through timed flipping and automatic flipping, the flipping is more punctual and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a side view structural schematic diagram of the present invention;

[0021] Figure 2 for Figure 1 AA sectional view of the structure described in;

[0022] Figure 3 for Figure 1 A BB sectional view of the structure described in;

[0023] Figure 4 for Figure 3 Enlarged view of middle C;

[0024] Figure 5 It is a schematic structural diagram of the extrusion spring of the present invention. DETAILED DESCRIPTION

[0025] like Figure 1-5 As shown, a high-stability prone position ventilation device is mainly used in clinical practice. In the case of prone position ventilation, the patient's head is supported and the head is turned over at regular intervals to prevent long-term unilateral force compression. In general, the present invention includes a bracket and a mounting plate 1 arranged on the top of the bracket, a driving mechanism arranged on the mounting plate 1, and a supporting mechanism driven by the driving mechanism.

[0026] The bracket as the installation base of the present invention can adopt many structural forms, for example, it can be two U-shaped legs, which can be directly clamped on the bed; but in order to reduce the volume and facilitate folding, it can also be as follows Figure 1 and 2 As shown in the figure, the bracket includes two L-shaped support legs 31, and the upper ends of the L-shaped vertical sides 32 of the support legs 31 are hinged to the mounting plate 1. When in use, the two support legs 31 are opened to form an inverted V. Further, the support legs 31 can also be designed to be foldable, for example: the L-shaped vertical sides 32 and the horizontal sides 33 of the support legs 31 are hinged to each other, so that the horizontal sides 33 are folded to overlap the vertical sides 32, so as to reduce the space occupied when not in use.

[0027] On this basis, the horizontal side 33 of the support leg 31 can also be provided with a plurality of locking holes 34 distributed in a fan shape around the hinge center at the hinge position, and an elastic locking pin can be provided on the vertical side 32 at a position opposite to the locking hole 34. When the horizontal side 33 and the vertical side 32 are bent to a specific angle, the elastic locking pin can be extended into the locking hole 34 to form an angle lock for the horizontal side 33 and the vertical side 32 of the support leg 31, thereby realizing the function of angle adjustment, thereby adapting to the upward posture of the head of some patients, and making it easier to fully open the airway. In addition, in order to further adapt to the needs of different use heights, the vertical side 32 of the support leg 31 can also be composed of two sections that form a sliding fit and can form a lock. The specific telescopic and locking forms are relatively conventional and will not be repeated in the present invention.

[0028] Regarding the driving mechanism of the present invention: it is used to flip and drive the supporting mechanism to achieve alternate support of the head and prevent one side from being compressed for a long time. Figure 1As shown in the figure, the driving mechanism includes a main shaft 2. In order to ensure the stability of its installation and rotation, a vertical plate 29 can be provided in the middle of the top surface of the mounting plate 1, and a bearing seat 30 is provided on the top surface of one end of the mounting plate 1 close to the telescopic shaft 5. The two ends of the main shaft 2 are respectively inserted into the bearings on the vertical plate 29 and the bearing seat 30, and form a rotational fit with the vertical plate 29 and the bearing seat 30.

[0029] One end of the main shaft 2 is connected to the driving motor 4 through the reducer 3, and the other end is provided with a sliding hole extending along the length direction of the main shaft 2. A matching telescopic shaft 5 is provided in the sliding hole. The telescopic shaft 5 is in sliding cooperation with the main shaft 2 and can rotate with the rotation of the main shaft 2. Therefore, the cross-section of the sliding hole and the telescopic shaft 5 is generally polygonal, as shown in the figure, which is a regular hexagon. Of course, it is also feasible to use a square or other polygons, as long as it can slide and meet the transmission of the torque of the main shaft 2 to the telescopic shaft 5. A driving wheel 6 is fixedly provided in the middle of the main shaft 2, and a rotating head 7 is fixedly provided at the cantilever end of the telescopic shaft 5. When the head is placed and turned over, the driving wheel 6 is mainly responsible for the turning drive at the forehead, and the rotating head 7 is mainly responsible for the turning of the face (i.e., the main part of the head). The two parts are turned over at the same time to form a turning of the head.

[0030] The present invention adopts a two-stage drive because, on the one hand, patients have certain body shape differences, and the two parts of the support mechanism can be more accurately aligned with the patient's forehead and face through the slidable adjustment of the main shaft 2 and the telescopic shaft 5. On the other hand, when flipping, a flipping torque can be applied synchronously near the forehead and face, thereby maintaining the overall balance of the head during the flipping process.

[0031] Regarding the support mechanism of the present invention: it is compatible with the driving mechanism, and includes an annular forehead band 8 for supporting the patient's forehead and a face support assembly 9 for supporting the patient's face. The forehead band 8 is arranged at the driving wheel 6, and the upper part of the forehead band 8 passes around the driving wheel 6, and the lower part is suspended below the mounting plate 1. In order to ensure the effective opening of the forehead band 8 and ensure the overall positioning of the center of the patient's head, the forehead band 8 is arranged at the driving wheel 6. Figure 1 and 2 As shown, two notches can be provided on both sides of the mounting plate 1 below the driving wheel 6, and a group of rotating guide rollers 28 are provided in each of the two notches, and the forehead band 8 passes through the rotating guide rollers 28. In this way, when the driving wheel 6 rotates, it can drive the forehead band 8 to rotate through friction, thereby driving the head to deflect. Since the contact between the forehead band 8 and the patient's head is in a non-direct fixed form, it mainly plays a positioning and supporting role. When it cooperates with the face support assembly 9 to flip, it has a certain adaptive sliding characteristic and is more comfortable. At the same time, the forehead band 8 can basically position the patient's head in the center position to prevent the phenomenon of skewing during the flipping process.

[0032] Another important part of the support mechanism is the face support assembly 9, such as Figure 1 and 3 As shown in the figure, the face support assembly 9 is located below the rotating head 7, and the face support assembly 9 includes two oppositely arranged clamps 10 that can form an inverted L-shape that can be opened and closed, and a connecting block 11 for connecting to the rotating head 7. The clamp 10 is arranged at the bottom of the connecting block 11 and is hinged with the connecting block 11. When in use, the two clamps 10 can be used to clamp the patient's face to ensure the support stability of the head. At the same time, sufficient space for tube placement can be reserved near the mouth and nose. In order to improve comfort, gel cushions 27 can generally be provided on the inner surfaces of the clamp 10 and the forehead band 8. The driving form of the clamp 10 can be as follows: Figure 1 and 3 As shown in the figure, two driving rods 12 are symmetrically arranged on the two side walls of the connecting block 11, one end of the two driving rods 12 is hinged to the connecting block 11, and the other end is hinged to the clamp body 10. The driving rod 12 includes a threaded sleeve 13 and a screw 14 that is inserted into the threaded sleeve 13 and forms a threaded fit with the threaded sleeve 13, and a rotary joint 15 is arranged at one end of the threaded sleeve 13 away from the screw 14. By rotating the threaded sleeve 13, the length of the driving rod 12 can be adjusted, and then the opening and closing angle of the clamp body 10 can be changed, so that it can be universal for patients with different head and body shapes, and the stability of the clamp can be ensured.

[0033] During operation, the face support assembly 9 rotates with the rotating head 7 to achieve the flipping of the human head. The two clamps 10 alternately support the patient's head, so that the face is under pressure on one side for a long time. However, since the rotation axis of the entire face support assembly 9 is at the telescopic shaft 5, and the actual rotation axis of the human body is the cervical joint, its position is lower than the telescopic shaft 5, and due to differences in patient body shape and operation, the placement position of the head on the frame 10 is slightly different each time, resulting in a certain instability of this rotation axis deviation. If the face support assembly 9 is directly driven rigidly by the rotating head 7, there is a certain risk of injury.

[0034] To this end, a better approach of the present invention may also be to form a flexible connection with a pressure relief function between the connecting block 11 and the rotating head 7, that is, the connecting block 11 and the rotating head 7 are connected via an adaptive correction mechanism.

[0035] like Figure 1 , 3As shown in Figures 4 and 5, the adaptive correction mechanism includes a main swing rod 16 and a secondary swing rod 17. The upper end of the main swing rod 16 is fixedly connected to the bottom of the rotating head 7. A lifting groove 18 extending vertically is provided at the center of one side of the main swing rod 16. A lifting block 19 is provided in the lifting groove 18 to form a sliding fit with the lifting groove 18. A pin hole 20 penetrating the lifting block 19 in the front-to-back direction is provided at the center of the lifting block 19. The top of the lifting block 19 is connected to the top of the lifting groove 18 through a pull-back spring 21. A pin groove 22 extending vertically and penetrating the front and rear surfaces of the main swing rod 16 is also provided in the lifting groove 18. The lower end of the secondary swing rod 17 is connected to the connecting block 11. A rotating pin 23 matching the pin hole 20 on the lifting block 19 and perpendicular to the rod surface of the secondary swing rod 17 is provided on one side of the upper end of the secondary swing rod 17. The rotating pin 23 extends from the pin groove 22 into and passes through the pin hole 20 of the connecting block 11 to form a rotating fit with the lifting block 19. The overhanging end of the rotating pin 23 is provided with a washer and a nut. The adaptive correction mechanism also includes two extrusion springs 24, and the extrusion spring 24 includes a spring coil 25 and two legs 26 distributed outside the spring coil 25 in a centrally symmetrical manner. The spring coils 25 of the two extrusion springs 24 are sleeved outside the rotating pin 23 and fixedly connected to the rotating pin 23. The legs 26 of the extrusion springs 24 are distributed in a butterfly shape and are pressed against the groove walls on both sides of the lifting groove 18.

[0036] Through the above design, during the swinging process of the rotating head 7, the torque is not directly and rigidly transmitted to the face support assembly 9, but is transferred through the adaptive correction mechanism. Since the main swing rod and the auxiliary swing rod of the adaptive correction mechanism are not only elastic in the combined length, but also have a certain margin in the relative angle, when the face support assembly 9 rotates, it can perform a certain degree of adaptive adjustment according to the actual situation, thereby avoiding the possibility of mechanical sprain.

Claims

1. A high-stability prone position ventilation device, characterized in that: It comprises a bracket and a mounting plate (1) arranged on the top of the bracket, and also comprises a driving mechanism arranged on the mounting plate (1), and a supporting mechanism driven by the driving mechanism; The driving mechanism comprises a main shaft (2), one end of the main shaft (2) is connected to a driving motor (4) through a reducer (3), and the other end is provided with a sliding hole extending along the length direction of the main shaft (2); a matching telescopic shaft (5) is provided in the sliding hole; the telescopic shaft (5) and the main shaft (2) form a sliding fit; a driving wheel (6) is fixedly provided in the middle of the main shaft (2), and a rotating head (7) is fixedly provided at the cantilevered end of the telescopic shaft (5); The support mechanism comprises an annular forehead band (8) for supporting the patient's forehead and a face support assembly (9) for supporting the patient's face; the forehead band (8) is arranged at the driving wheel (6), and the upper part of the forehead band (8) passes around the driving wheel (6), and the lower part is suspended below the mounting plate (1); the face support assembly (9) is located below the rotating head (7), and the face support assembly (9) comprises two oppositely arranged, inverted L-shaped clamping bodies (10) capable of opening and closing, and a connecting block (11) for connecting to the rotating head (7); the clamping body (10) is arranged at the bottom of the connecting block (11) and is hinged to the connecting block (11).

2. The high stability prone position ventilation device according to claim 1, characterized in that: Two driving rods (12) are symmetrically arranged on the two side walls of the connecting block (11), one end of the two driving rods (12) is hinged to the connecting block (11), and the other end is hinged to the clamping body (10); the driving rod (12) comprises a threaded sleeve (13) and a screw rod (14) which is inserted into the threaded sleeve (13) and forms a threaded fit with the threaded sleeve (13); a rotating joint (15) is arranged at one end of the threaded sleeve (13) away from the screw rod (14).

3. The high stability prone position ventilation device according to claim 2, characterized in that: The connecting block (11) and the rotating head (7) are connected via an adaptive correction mechanism, the adaptive correction mechanism comprising a main swing rod (16) and a secondary swing rod (17), the upper end of the main swing rod (16) being fixedly connected to the bottom of the rotating head (7), a lifting groove (18) extending vertically is arranged at the center of one side of the main swing rod (16), a lifting block (19) slidingly matched with the lifting groove (18) is arranged in the lifting groove (18), a pin hole (20) penetrating the lifting block (19) in the front-to-back direction is arranged in the center of the lifting block (19), the top of the lifting block (19) is connected to the top of the lifting groove (18) via a return spring (21); a pin groove (22) extending vertically and penetrating the front and rear surfaces of the main swing rod (16) is also arranged in the lifting groove (18); the lower end of the secondary swing rod (17) is connected to the connecting block (11) A rotating pin (23) is arranged on one side of the upper end of the auxiliary swing rod (17) and is matched with a pin hole (20) on the lifting block (19) and is perpendicular to the rod surface of the auxiliary swing rod (17). The rotating pin (23) extends from the pin groove (22) into the pin hole (20) of the connecting block (11) and forms a rotating match with the lifting block (19). A washer and a nut are arranged on the cantilevered end of the rotating pin (23). The adaptive correction mechanism also includes two extrusion springs (24), the extrusion springs (24) include a spring coil (25) and two legs (26) distributed outside the spring coil (25) in a centrally symmetrical manner. The spring coils (25) of the two extrusion springs (24) are sleeved outside the rotating pin (23) and are fixedly connected to the rotating pin (23). The legs (26) of the extrusion springs (24) are distributed in a butterfly shape and are pressed against the groove walls on both sides of the lifting groove (18).

4. The high stability prone position ventilation device according to claim 3, characterized in that: The inner surface of the clamp body (10) is provided with a gel cushion (27).

5. The high stability prone position ventilation device according to claim 4, characterized in that: The inner surface of the forehead band (8) corresponding to the patient's forehead is also provided with a gel cushion (27).

6. The high stability prone position ventilation device according to claim 5, characterized in that: Two recesses are arranged on both sides of the mounting plate (1) below the driving wheel (6), and a group of rotating guide rollers (28) are arranged in each of the two recesses, and the forehead band (8) passes through the rotating guide rollers (28).

7. The high stability prone position ventilation device according to claim 6, characterized in that: The cross sections of the sliding hole and the telescopic shaft (5) are polygonal.

8. The high stability prone position ventilation device according to claim 7, characterized in that: A vertical plate (29) is arranged in the middle of the top surface of the mounting plate (1), and a bearing seat (30) is arranged on the top surface of one end of the mounting plate (1) close to the telescopic shaft (5); the two ends of the main shaft (2) are respectively inserted into the bearings on the vertical plate (29) and the bearing seat (30), forming a rotational fit with the vertical plate (29) and the bearing seat (30).

9. The high stability prone position ventilation device according to claim 8, characterized in that: The bracket comprises two L-shaped supporting legs (31), and the upper ends of the L-shaped vertical sides (32) of the supporting legs (31) are hinged to the mounting plate (1).

10. The high stability prone position ventilation device according to claim 9, characterized in that: The L-shaped vertical side (32) and the horizontal side (33) of the support leg (31) are hinged to each other, and the horizontal side (33) is provided with a plurality of locking holes (34) distributed in a fan shape around the hinge center at the hinge position, and an elastic locking pin is provided at a position opposite to the locking hole (34) on the vertical side (32); the elastic locking pin can extend into the locking hole (34) to form an angle locking for the horizontal side (33) and the vertical side (32) of the support leg (31); The vertical side (32) of the support leg (31) is composed of two sections that form a sliding fit and can form a lock.

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