Flexible guiding intubation assembly for preventing pressure sores in prone position anesthesia

Abstract

This invention relates to the field of pressure ulcer prevention guiding cannula technology, specifically a pressure ulcer prevention flexible guiding cannula assembly suitable for prone anesthesia. The positioning unit includes a pad fixedly mounted on a connecting plate, a bite tube fixedly mounted on the pad, and a connector fixedly mounted on the end of the catheter. The pad mounted on the bite tube can conform to the patient's face, preventing the bite tube from being too long and causing discomfort when inserted into the patient's mouth. At the same time, the entire device is fixed by a fixing strap fixedly mounted on a rotating shaft. The two fixing straps are fixed with Velcro, which is simple and convenient. After the fixing straps are connected, rotating one of the rotating shafts is controlled by rotating the wheel clockwise. The rotating wheel can drive the fixing strap fixedly connected to it to rotate clockwise through the positioning plate, tightening the fixing strap wrapped around its outer circumference. The other rotating shaft, connected by a large gear, will rotate counterclockwise, loosening the fixing strap connected to it.

Description

Technical Field

[0001] This invention relates to the field of pressure ulcer prevention and guiding cannula technology, specifically to a pressure ulcer prevention flexible guiding cannula assembly suitable for prone anesthesia. Background Technology

[0002] Endotracheal intubation is an important medical procedure in which a specially designed endotracheal tube is inserted into the patient's trachea through the mouth or nose to establish an artificial airway, ensuring the patient's unobstructed breathing and life safety. Anesthetized patients or those with weakened swallowing reflexes are prone to aspiration, which occurs when stomach contents or other foreign objects are inhaled into the airway, leading to lung infection or even suffocation. Endotracheal intubation can effectively protect the airway and prevent aspiration. For example, patients in a coma due to cerebral hemorrhage often require endotracheal intubation during emergency treatment to avoid the serious consequences of aspiration.

[0003] The main components of a traditional pressure-resistant flexible guide cannula assembly include a flexible guide cannula sleeve, a pressure-resistant pad, an elastic fixation element, a tubing limiting clamp, and a breathable fixation patch. The flexible guide cannula sleeve is the core guiding component, made of soft medical materials. The pressure-resistant pad is typically made of gel or breathable sponge. The elastic fixation element and limiting clamp respectively secure the assembly and prevent tubing displacement. The breathable fixation patch ensures skin respiration at the application site. In use, the flexible guide cannula sleeve is first fitted over the anesthesia cannula to complete the guiding assembly. Then, the pressure-resistant pad is applied to the patient's face and neck where the cannula will contact pressure points. The cannula and guide cannula are then secured together with the limiting clamp. The elastic fixation element is used to gently press around the head for fixation. Finally, the tubing angle is adjusted, and the breathable fixation patch is applied to ensure no cannula displacement and no localized compression of pressure points, completing the pressure-resistant guiding and fixing procedure for prone anesthesia cannula insertion.

[0004] Currently, most prone anesthesia intubation aids used in clinical practice are integrated rigid structures. These rigid components have a fixed shape and no room for adjustment. Since different patients have different physiological curves of the head and neck, multiple fixation straps are needed to wrap around the patient's head during assembly and fixation to ensure the stability of the intubation tube. The rigid contact surface of the rigid component is in long-term contact with and continuously presses on the patient's delicate skin such as the face and neck, which can easily cause local skin blood circulation obstruction and insufficient tissue oxygen supply. Especially in prolonged prone surgery, the incidence of pressure sores at the pressure sites will increase significantly, which not only greatly increases the patient's postoperative pain, but also increases the difficulty of clinical nursing and the burden of subsequent care. Summary of the Invention

[0005] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is: due to the different physiological curves of the head and neck of different patients, multiple fixation straps are needed to wrap around the patient's head during assembly and fixation to ensure the stability of the intubation tube. The rigid contact surface of the rigid component is in long-term contact with and continuously presses on the delicate skin of the patient's face, neck and other parts of the body, which can easily cause obstruction of local skin blood circulation and insufficient tissue oxygen supply. Especially in the case of surgery in a prone position for a long time, the incidence of pressure sores in the pressure area will increase significantly, which will not only greatly increase the patient's postoperative pain, but also increase the difficulty of clinical nursing and the burden of subsequent nursing care.

[0006] The technical solution adopted by this application to solve its technical problem is: a pressure-ulcer-resistant flexible guide cannula assembly suitable for prone anesthesia, including a catheter, on which a connecting plate is fixedly disposed:

[0007] Positioning unit; the positioning unit includes a protective pad fixedly disposed on the connecting plate, a bite tube fixedly disposed on the protective pad, the protective pad being arc-shaped, and a connector fixedly disposed at the end of the tube;

[0008] The adjustment unit includes a fixed plate fixedly mounted on the connecting plate, a bracket fixedly mounted on the fixed plate, a rotating shaft rotatably mounted on the bracket, a fixing belt fixedly mounted on the outer circumferential surface of the rotating shaft, and a rotating wheel fixedly mounted on the rotating shaft.

[0009] Preferably, the fixing strap is made of elastic nylon, and a Velcro fastener is fixedly provided at the end of the fixing strap, and the two sections of the fixing strap are arranged parallel to each other.

[0010] Preferably, the two rotating shafts on the fixed plate are arranged parallel to each other, a large gear is fixedly arranged on the outer circumferential surface of one of the rotating shafts, and a small gear that meshes with the large gear is fixedly arranged on the outer circumferential surface of the other rotating shaft.

[0011] Preferably, the rotating shaft with the small gear is movably connected to the first bracket, a torsion spring is fixedly provided on the side wall of the small gear, a turntable is fixedly provided on the torsion spring, the turntable is slidably connected to the first bracket, and the thickness of the small gear is less than the thickness of the large gear.

[0012] Preferably, a ratchet is fixedly installed on the side wall of the bracket, a disc is fixedly installed on the outer circumferential surface of the rotating shaft, a locking block is rotatably installed on the disc, a compression spring is fixedly installed on the locking block, and the other end of the compression spring is fixedly connected to the disc.

[0013] Preferably, a positioning plate is fixedly provided on the outer circumferential surface of the rotating shaft, and two parallel brackets are fixedly provided on the positioning plate. A sleeve is rotatably provided on the bracket, and the sleeve is slidably connected to the rotating shaft. One end of the fixing belt is fixedly connected to the sleeve.

[0014] Preferably, a rubber pad is fixedly provided on the side wall of the pad, and each corner of the pad is arc-shaped, and the pad and the conduit are coaxially arranged.

[0015] Preferably, the fixing plates are distributed on the left and right sides of the connecting plate in the horizontal direction.

[0016] Preferably, an anti-slip pad is fixedly provided on the bite tube, and a hanging ear is fixedly provided on the side wall of the anti-slip pad.

[0017] Preferably, the thickness of the large gear is not greater than the distance between two adjacent brackets.

[0018] The beneficial effects of this application are as follows: The pressure-ulcer-resistant flexible guiding cannula assembly for prone anesthesia provided by this application allows the patient to first hold the device's cannula in their mouth. An anti-slip pad fixed to the cannula ensures it conforms to the patient's teeth, guaranteeing that the cannula will not fall out of the patient's mouth even during anesthesia or sleep. The pad on the cannula conforms to the patient's face, preventing the cannula from being too long and causing discomfort. Simultaneously, a fixing strap fixed to the rotating shaft secures the entire device. The nylon fixing strap, wrapped around the patient's head, provides good elasticity, avoiding discomfort caused by rigid components. The Velcro straps provide a simple and convenient way to secure the two sections of the fixation straps. After connecting the straps, medical staff can control one of the rotating shafts by turning the wheel clockwise. The rotating wheel, through the positioning plate, drives the fixed straps connected to it to rotate clockwise, winding the straps around its outer circumference. The other shaft, connected by a large gear, rotates counterclockwise, loosening the fixed straps connected to it. This achieves a tightening and loosening effect, allowing medical staff to continuously change the fixation straps during prolonged surgeries by rotating the wheel clockwise and counterclockwise, avoiding prolonged pressure on one part of the patient's head, ensuring patient comfort, and preventing pressure sores. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a side view of the structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the pad structure of the present invention;

[0022] Figure 4 This is a partial structural diagram of the present invention. Figure 1 ;

[0023] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0024] Figure 6 This is a partial structural diagram of the present invention. Figure 2 ;

[0025] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point B.

[0026] In the diagram: 1. Guide tube; 11. Connector; 2. Connecting plate; 21. Fixing plate; 22. Bracket 1; 23. Rotating shaft; 231. Large gear; 232. Rotating wheel; 233. Positioning plate; 234. Small gear; 235. Disc; 236. Locking block; 237. Compression spring; 3. Tube bite; 31. Anti-slip pad; 4. Protective pad; 5. Fixing strap; 51. Velcro; 6. Bracket 2; 7. Turntable; 71. Torsion spring; 8. Ratchet. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0029] Reference Figures 1-7 A pressure-ulcer-resistant flexible guide cannula assembly suitable for prone anesthesia includes a catheter 1, on which a connecting plate 2 is fixedly mounted.

[0030] Positioning unit; The positioning unit includes a pad 4 fixedly mounted on the connecting plate 2, a bite tube 3 fixedly mounted on the pad 4, the pad 4 being arc-shaped, and a connector 11 fixedly mounted on the end of the guide tube 1;

[0031] The adjustment unit includes a fixed plate 21 fixedly mounted on the connecting plate 2, a bracket 22 fixedly mounted on the fixed plate 21, a rotating shaft 23 rotatably mounted on the bracket 22, a fixing belt 5 fixedly mounted on the outer circumferential surface of the rotating shaft 23, and a rotating wheel 232 fixedly mounted on the rotating shaft 23.

[0032] Reference Figures 1-4 The fixing strap 5 is made of elastic nylon, and the ends of the fixing strap 5 are fixed with Velcro 51. The two fixing straps 5 are arranged parallel to each other. The fixing strap 5 is made of high elasticity nylon material in one piece. The high elasticity of nylon material allows the fixing strap 5 to achieve reliable fixation while having good tensile resilience, adapting to different head circumferences and avoiding excessive pressure that may cause local discomfort. Velcro 51 is fixedly sewn to the end surface of the fixing strap 5. The Velcro 51 is firmly connected to the fixing strap 5 without the risk of falling off, and can be quickly attached and removed, making it easy to operate. The two fixing straps 5 are arranged in a parallel structure. The parallel arrangement can evenly distribute the fixing force and avoid excessive force in one place, further improving the stability of fixation and the comfort of the fit.

[0033] Reference Figures 1-6 Two rotating shafts 23 on the fixed plate 21 are arranged parallel to each other. A large gear 231 is fixedly installed on the outer circumference of one rotating shaft 23, and a small gear 234 that meshes with the large gear 231 is fixedly installed on the outer circumference of the other rotating shaft 23. By rotating the shafts 23 on the fixed plate 21, when the operator controls the rotating shaft 23 with the small gear 234 to rotate, the large gear 231 that meshes with it will rotate together, thereby driving the other rotating shaft 23 to rotate. When the rotating shaft 23 rotates, it can roll up the fixing strap 5 on its surface, thereby fixing the device to the patient's head through the fixing strap 5. Furthermore, by setting the transmission method of the large gear 231 and the small gear 234 meshing, when one rotating shaft 23 rotates clockwise, the other rotating shaft 23 will rotate counterclockwise, ensuring that when one fixing strap 5 contracts, the other will loosen. The two are synchronized, making it simpler and more convenient for medical staff to operate.

[0034] Reference Figures 2-7The device includes a rotating shaft 23 with a small gear 234 that is movably connected to a support 22. A torsion spring 71 is fixedly mounted on the side wall of the small gear 234, and a turntable 7 is fixedly mounted on the torsion spring 71. The turntable 7 is slidably connected to the support 22. The thickness of the small gear 234 is less than that of the large gear 231. Through the torsion spring 71 mounted on the side wall of the small gear 234, the torsion spring 71 can, under normal circumstances, restrict the small gear 234 to the edge of the large gear 231 by its elastic force. The slidable connection between the turntable 7 and the support 22 avoids affecting the rotation speed of the small gear 234. The large gear 231 and the small gear 234 have the same number of teeth and the same diameter, ensuring that the two rotating shafts 23 rotate at the same speed. This ensures that the two fixing straps 5 can securely and effectively fix the device, preventing discomfort to the patient due to prolonged wearing of the device and also preventing pressure sores.

[0035] Reference Figures 2-7 A ratchet 8 is fixedly installed on the side wall of the bracket 22, and a disc 235 is fixedly installed on the outer circumference of the rotating shaft 23. A locking block 236 is rotatably installed on the disc 235, and a compression spring 237 is fixedly installed on the locking block 236. The other end of the compression spring 237 is fixedly connected to the disc 235. After the fixing strap 5 is connected, the medical staff can control the rotation of one of the rotating shafts 23 by rotating the rotating wheel 232 clockwise through the ratchet 8 on the bracket 22. The rotating wheel 232 can drive the positioning plate 233 to rotate the shaft. The fixing strap 5, which is fixedly connected between them, rotates clockwise to wind up the fixing strap 5 wrapped around its outer circumference. The other rotating shaft 23, which is connected by a large gear 231, rotates counterclockwise to loosen the fixing strap 5 connected to it, so that one tightens and the other loosens. During a long operation, medical staff can press the rotating shaft 23 with a small gear 234 to disengage the locking block 236 on the compression spring 237 from the ratchet 8, and then rotate the rotating wheel 232 clockwise and counterclockwise to continuously replace the fixing strap 5 to avoid prolonged pressure on one part of the patient's head.

[0036] Reference Figures 2-7 A positioning plate 233 is fixedly installed on the outer circumferential surface of the rotating shaft 23. Two parallel brackets 6 are fixedly installed on the fixing plate 21. A sleeve is rotatably installed on the bracket 6. The sleeve is slidably connected to the rotating shaft 23. One end of the fixing belt 5 is fixedly connected to the sleeve. By using the sleeve on the bracket 6, the fixing belt 5 on the outer circumferential surface of the rotating shaft 23 with sliding function is limited. This ensures that the fixing belt 5 will not move laterally when the rotating shaft 23 moves laterally, thus ensuring the stable operation of the device.

[0037] Reference Figures 1-4A rubber pad is fixedly installed on the side wall of the pad 4, and each corner of the pad 4 is arc-shaped. The pad 4 and the catheter 1 are coaxially arranged. The rubber pad is made of flexible material and can effectively buffer the contact pressure between the pad 4 and the patient's face, greatly improving the fit and comfort when wearing it and avoiding facial discomfort caused by hard contact. At the same time, all corners of the pad 4 are rounded and chamfered to eliminate the risk of sharp edges scratching the skin and further ensure the safety of use. In addition, the pad 4 and the catheter 1 are coaxially arranged to ensure the coaxiality of the connection between the two, making the medium transmission smoother and the overall assembly stability better.

[0038] Reference Figures 1-4 The fixing plates 21 are distributed on the left and right sides of the connecting plate 2 in the horizontal direction. The even distribution of the fixing plates 21 ensures good symmetry, thereby ensuring that the device can be more easily fixed to the patient's face.

[0039] Reference Figures 1-3 An anti-slip pad 31 is fixedly installed on the bite tube 3, and a hanging ear is fixedly installed on the side wall of the anti-slip pad 31. When using it, the patient first holds the bite tube 3 of the device in his mouth. The anti-slip pad 31 fixedly installed on the bite tube 3 allows it to fit against the patient's teeth, ensuring that the catheter 1 will not fall out of the patient's mouth even in a state of numbness or sleep.

[0040] Reference Figures 2-7 The thickness of the large gear 231 is no greater than the distance between two adjacent brackets 22. By setting the size relationship between the large gear 231 and the bracket 22, it is ensured that the device will not jam during operation.

[0041] The specific procedure is as follows: During use, the patient first holds the mouthpiece 3 of the device in their mouth. The anti-slip pad 31, fixed to the mouthpiece 3, ensures it conforms to the patient's teeth, guaranteeing that the catheter 1 will not fall out of the patient's mouth even during numbness or sleep. The protective pad 4 on the mouthpiece 3 conforms to the patient's face, preventing the mouthpiece 3 from being too long and causing discomfort. Simultaneously, the fixing strap 5, fixed to the rotating shaft 23, secures the entire device. The fixing strap 5, made of nylon, is wrapped around the patient's head; its good elasticity avoids discomfort caused by rigid components. Velcro 51 is used to easily and conveniently secure the two sections of the fixing strap 5. After the fixation strap 5 is connected, medical staff can control one of the rotating shafts 23 to rotate by rotating the wheel 232 clockwise. The rotating wheel 232 can drive the fixation strap 5 fixedly connected to it to rotate clockwise through the positioning plate 233, winding the fixation strap 5 around its outer circumference. The other rotating shaft 23 connected by the large gear 231 will rotate counterclockwise, loosening the fixation strap 5 connected to it. This achieves one tightening and one loosening. During a long operation, medical staff can continuously change the fixation strap 5 by rotating the wheel 232 clockwise and counterclockwise to avoid prolonged pressure on one part of the patient's head, ensuring the patient's comfort and preventing pressure sores.

[0042] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary. Under the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

[0043] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A pressure-ulcer-resistant flexible guiding cannula assembly suitable for prone anesthesia, comprising a catheter (1), wherein a connecting plate (2) is fixedly disposed on the catheter (1), characterized in that, Also includes: Positioning unit; the positioning unit includes a pad (4) fixedly disposed on the connecting plate (2), a bite tube (3) fixedly disposed on the pad (4), the pad (4) is arc-shaped, and a connector (11) is fixedly disposed at the end of the conduit (1). The adjustment unit includes a fixed plate (21) fixedly mounted on the connecting plate (2), a bracket (22) fixedly mounted on the fixed plate (21), a rotating shaft (23) rotatably mounted on the bracket (22), a fixing belt (5) fixedly mounted on the outer circumferential surface of the rotating shaft (23), and a rotating wheel (232) fixedly mounted on the rotating shaft (23).

2. The pressure-ulcer-resistant flexible guide cannula assembly for prone anesthesia according to claim 1, characterized in that, The fixing strap (5) is made of elastic nylon, and a Velcro (51) is fixedly provided at the end of the fixing strap (5), and the two fixing straps (5) are arranged parallel to each other.

3. The pressure-ulcer-resistant flexible guide cannula assembly for prone anesthesia according to claim 2, characterized in that, The two rotating shafts (23) on the fixed plate (21) are arranged parallel to each other. A large gear (231) is fixedly arranged on the outer circumferential surface of one of the rotating shafts (23), and a small gear (234) that meshes with the large gear (231) is fixedly arranged on the outer circumferential surface of the other rotating shaft (23).

4. The pressure-ulcer-resistant flexible guide cannula assembly for prone anesthesia according to claim 3, characterized in that, The rotating shaft (23) of the small gear (234) is movably connected to the first bracket (22). A torsion spring (71) is fixedly installed on the side wall of the small gear (234). A turntable (7) is fixedly installed on the torsion spring (71). The turntable (7) is slidably connected to the first bracket (22). The thickness of the small gear (234) is less than the thickness of the large gear (231).

5. The pressure-ulcer-resistant flexible guide cannula assembly for prone anesthesia according to claim 4, characterized in that, A ratchet (8) is fixedly installed on the side wall of the bracket (22), a disc (235) is fixedly installed on the outer circumferential surface of the rotating shaft (23), a locking block (236) is rotatably installed on the disc (235), a compression spring (237) is fixedly installed on the locking block (236), and the other end of the compression spring (237) is fixedly connected to the disc (235).

6. The pressure-ulcer-resistant flexible guide cannula assembly for prone anesthesia according to claim 1, characterized in that, A positioning plate (233) is fixedly installed on the outer circumferential surface of the rotating shaft (23). Two parallel brackets (6) are fixedly installed on the fixing plate (21). A sleeve is rotatably installed on the bracket (6). The sleeve is slidably connected to the rotating shaft (23). One end of the fixing belt (5) is fixedly connected to the sleeve.

7. The pressure-ulcer-resistant flexible guide cannula assembly for prone anesthesia according to claim 1, characterized in that, A rubber pad is fixedly installed on the side wall of the pad (4), and each corner of the pad (4) is arc-shaped. The pad (4) and the conduit (1) are coaxially arranged.

8. The pressure-ulcer-resistant flexible guide cannula assembly for prone anesthesia according to claim 1, characterized in that, The fixing plate (21) is distributed in parallel on the left and right sides of the connecting plate (2) in the horizontal direction.

9. The pressure-ulcer-resistant flexible guide cannula assembly for prone anesthesia according to claim 1, characterized in that, An anti-slip pad (31) is fixedly provided on the bite tube (3), and a hanging ear is fixedly provided on the side wall of the anti-slip pad (31).

10. The pressure-ulcer-resistant flexible guide cannula assembly for prone anesthesia according to claim 3, characterized in that, The thickness of the large gear (231) is not greater than the distance between two adjacent brackets (22).

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