Auxiliary fixing device for oral trachea cannula of critical patient

Abstract

The invention relates to the technical field of medical instruments, and discloses a critical patient oral trachea cannula auxiliary fixing device which comprises an elastic telescopic fastening mechanism and an air pressure expansion type clamping mechanism. According to the auxiliary fixing device for the oral trachea cannula of the critical patient, in the fixing process, the device can automatically adjust the direction of the clamping component along with the path of the cannula, so that the angle adaptability of the device in the using process is improved, in addition, the elastic air bag barrel capable of expanding inwards is used for carrying out the wrapping type clamping effect on the periphery of the cannula, and the device is convenient to use. Therefore, the clamping contact area is increased to reduce the pressure of air pressure on the intubation tube in unit area, and the effective auxiliary fixing effect on the intubation tube can be achieved on the basis that the medium flowing accuracy of the intubation tube is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to an auxiliary fixation device for oral tracheal intubation of critically ill patients. Background Art

[0002] Currently, oral endotracheal tubes are usually fixed by tying them to a dental pad with tape. After being soaked by the patient's saliva, the tape loses its stickiness and becomes loose, allowing it to be bitten in and out by the patient's teeth. This results in poor fixation and poses potential risks.

[0003] To this end, Chinese patent application number CN213220242U discloses a "device for securing an oral endotracheal tube." Its main structure includes an arched mounting frame with an inner side that matches the face, a fixing strap, a first through-hole larger than or equal to the mouth, a horizontally sliding fixing clip for clamping the endotracheal tube, and a first locking structure for locking and unlocking the sliding of the fixing clip. The device comprises a mounting frame, a fixing strap, a first through-hole, a sliding fixing clip, and a first locking structure for locking and unlocking the sliding of the fixing clip. The inner side of the mounting frame is arched to conform to the physiological curvature of the human face, allowing the mounting frame to be snapped onto the face. The first through-hole is located at the mouth, and the mounting frame is secured by the fixing strap. The fixing clip is slid left and right onto the endotracheal tube to clamp it in place.

[0004] The above-mentioned oral endotracheal tube fixing device fixes the cannula based on the following principle: when the first clamp slides upward, the second clamp moves away from the first clamp and the fixing clamp opens; when the second clamp slides downward, the second clamp approaches the first clamp to fix the endotracheal tube. This structure can fix endotracheal tubes of different diameters. However, since the cannula is generally made of a relatively soft material, the above-mentioned fixing clamp clamps and fixes the cannula by applying pressure to the opposite sides of the cannula. Since the clamping area is relatively small, the pressure of the cannula at the contact part increases sharply. In order to ensure the clamping force, the pressure between the two needs to reach the rated value. However, since the contact area is relatively small, the cannula will be pressed into a flat shape, resulting in a decrease in the inner diameter of the cannula during diversion, which will cause a decrease in the medium flow rate and flow rate, thereby affecting the accurate dosage of the drug. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides an auxiliary fixation device for oral tracheal intubation in critically ill patients. When fixing, the device can autonomously adjust the orientation of the clamping component according to the path of the intubation, thereby improving the angular adaptability of the equipment during use. In addition, the device uses an inwardly expandable elastic air bag tube to perform a wrap-type clamping effect on the periphery of the intubation, thereby increasing the clamping contact area to reduce the pressure of the air pressure on the intubation per unit area, thereby ensuring that the intubation can achieve an effective auxiliary fixation effect on the intubation while ensuring the accuracy of the medium flow, thereby solving the above-mentioned technical problems.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an auxiliary fixation device for oral tracheal intubation of critically ill patients, comprising an elastic telescopic fastening mechanism, the interior of which is provided with an arched fixing frame that can be fitted on the periphery of the lips, a movable notch arranged in the middle of the arched fixing frame and used to guide the components to slide along its surface, and an elastic bandage embedded on both sides of the arched fixing frame and capable of being worn at the patient's head circumference; and a pneumatic expansion clamping mechanism, the interior of which is provided with an arched movable plate that can be clamped in the movable notch and can slide along the surface of the arched fixing frame, a plurality of cannula placement holes arranged in the middle area of ​​the arched movable plate and used to place the cannula in a through manner, an elastic air bag tube embedded in the periphery of the cannula placement hole and which, when subjected to gas pressure, expands and closes inwardly, thereby wrapping and clamping the cannula, and a gas compensation channel capable of guiding the gas end to the periphery of each elastic air bag tube, and the materials used to make the elastic telescopic fastening mechanism and the pneumatic expansion clamping mechanism are sufficient to ensure that they will not deform during operation.

[0007] Preferably, the elastic telescopic fastening mechanism includes an arched fixing frame, a hollow movable notch is provided in the middle area of ​​the arched fixing frame, and belt embedding grooves with an inwardly concave structure are provided on both sides of the arched fixing frame. An elastic bandage is installed between the two belt embedding grooves, and a buffer pad is installed on the inwardly concave surface of the arched fixing frame on both sides of the movable notch.

[0008] Preferably, the curvature of the inner concave surface of the arched fixing frame matches the curvature of the patient's face at the mouth and nose.

[0009] Preferably, the buffer pad and the elastic bandage are both made of textile materials with elastic extensibility and breathable function.

[0010] Preferably, the pneumatic expansion clamping mechanism includes an arched movable plate, the upper and lower ends of the arched movable plate are both provided with a concave structure and are clamped in the concave slide grooves on the upper and lower peripheries of the movable notch, and the middle portion of the arched movable plate is provided with a plurality of tube placement holes communicating with its two surfaces, and the arched movable plate is provided with a gas reservation cavity on the periphery of the middle area of ​​the tube placement hole, and the arched movable plate is embedded with an elastic air bag tube in a sealed edge-sealed manner at the annular intersection of the tube placement hole and the gas reservation cavity, and the middle portion of the arched movable plate is provided with a gas guide cavity communicating with the outer circumferential surfaces of each gas reservation cavity, and the arched movable plate is provided with a gas compensation channel with an integral structure therewith and connected to the gas guide cavity at one end of the arched movable plate close to the convex end of the arched fixing frame, a gas valve capable of controlling the flow of gas is installed inside the gas compensation channel, and a ring structure extending to the outside of its inner concave surface and acting as a tooth pad is provided at the center of the inner concave surface of the arched movable plate.

[0011] Preferably, the elastic airbag tube is made of a rubber material with elastic extensibility, and the elastic airbag tube divides the cannula placement hole and the gas reservation cavity into an inner area and an outer area that are not connected to each other.

[0012] Compared with the prior art, the present invention provides an auxiliary fixation device for oral tracheal intubation of critically ill patients, which has the following beneficial effects: When fixing, the device can autonomously adjust the orientation of the clamping component along the path of the cannula, thereby improving the angular adaptability of the device during use. In addition, the device uses an inwardly expandable elastic airbag to perform a wrap-around clamping effect on the periphery of the cannula, thereby increasing the clamping contact area to reduce the air pressure on the cannula per unit area, thereby ensuring that the cannula can achieve an effective auxiliary fixation effect on the cannula while ensuring the accuracy of the medium flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A perspective view of the present invention; Figure 2 is a three-dimensional cross-sectional view of the present invention; Figure 3 is a three-dimensional diagram of the elastic telescopic fastening mechanism of the present invention; Figure 4 is a three-dimensional cross-sectional view of the elastic telescopic fastening mechanism of the present invention; Figure 5 is a three-dimensional diagram of the pneumatic expansion clamping mechanism of the present invention; Figure 6 is a three-dimensional cross-sectional view of the pneumatic expansion clamping mechanism of the present invention at a first viewing angle; Figure 7 It is a three-dimensional cross-sectional view of the pneumatic expansion clamping mechanism of the present invention at a second viewing angle.

[0014] Among them: 1. Elastic telescopic fastening mechanism; 11. Arched fixing frame; 12. Moving notch; 13. Belt body embedding groove; 14. Buffer pad; 15. Elastic bandage; 2. Pneumatic expansion clamping mechanism; 21. Arched movable plate; 22. Inward concave slide groove; 23. Intubation hole; 24. Gas reserved cavity; 25. Elastic airbag tube; 26. Gas guide cavity; 27. Gas compensation channel; 28. Gas valve. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] See also Figure 1 and Figure 2 , an auxiliary fixation device for oral tracheal intubation of critically ill patients, the materials used to make the elastic telescopic fastening mechanism 1 and the pneumatic expansion clamping mechanism 2 are sufficient to ensure that they will not deform during operation.

[0017] To achieve a wearable fixation effect and improve the convenience of use, please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , it is necessary to set up an elastic telescopic fastening mechanism 1, which is internally provided with an arch fixing frame 11 that can fit on the periphery of the lips, a movable notch 12 provided in the middle of the arch fixing frame 11 and used to guide the component to slide along its surface, and an elastic bandage 15 embedded on both sides of the arch fixing frame 11 and capable of being worn at the patient's head circumference. The elastic bandage 15 is worn at the patient's head circumference, and the arch fixing frame 11 is located outside the patient's lips. Finally, the buffer pad 14 is made to contact the cheek bones of the patient's face, thereby achieving a wearable fixing effect, thereby improving the convenience of use.

[0018] For the specific structure of the elastic telescopic fastening mechanism 1, please refer to Figure 3 and Figure 4, including an arched fixing frame 11, a hollow movable notch 12 is provided in the middle area of ​​the arched fixing frame 11, and concave belt embedding grooves 13 are provided on both sides of the arched fixing frame 11. An elastic bandage 15 is installed between the two belt embedding grooves 13, and a buffer pad 14 is installed on both sides of the concave surface of the arched fixing frame 11 on both sides of the movable notch 12. The curvature of the concave surface of the arched fixing frame 11 matches the facial curvature of the patient's mouth and nose. The buffer pad 14 and the elastic bandage 15 are both made of textile materials with elastic extensibility and have breathable function.

[0019] To achieve a wrap-around grip on the cannula, see Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 7 , it is necessary to set up a pneumatic expansion clamping mechanism 2, which is internally provided with an arched movable plate 21 that can be stuck in the movable notch 12 and can slide along the surface of the arched fixing frame 11, a plurality of tube placement holes 23 arranged in the middle area of ​​the arched movable plate 21 and used to place the tube in a through manner, an elastic air bag 25 embedded in the outer periphery of the tube placement hole 23 and when subjected to gas pressure, it expands and closes inward, thereby wrapping and clamping the outer periphery of the tube, and a gas compensation channel 27 that can guide the gas end to the outer periphery of each elastic air bag 25, insert the tube body of the oral tracheal tube into the interior of each tube placement hole 23 accordingly, use an inflation device that can control the exhaust gas pressure, connect the inflation port of the inflation device with the gas compensation channel 27, start the inflation device, and the gas The gas enters the gas guide cavity 26 through the gas compensation channel 27, and then enters the interior of each gas reserved cavity 24 through the gas guide cavity 26. At the same time, gas pressure is applied to the periphery of multiple elastic airbag tubes 25. At this time, the inner diameter of the elastic airbag tube 25 is closed, thereby wrapping and clamping the outer circumference of the cannula, thereby increasing the clamping contact area to reduce the pressure of the air pressure on the cannula per unit area, so as to ensure that the cannula can achieve an effective auxiliary fixation effect on the cannula while ensuring the accuracy of the medium flow. Finally, the discharge air pressure is controlled by the inflation device to control the clamping force of the elastic airbag tube 25 on the cannula. When the treatment is completed, the internal gas is released through the gas valve 28, so that the elastic airbag tube 25 retracts under its own elastic action, and the cannula can be removed.

[0020] For the specific structure of the pneumatic expansion clamping mechanism 2, please refer to Figure 5 、 Figure 6 and Figure 7, including an arched movable plate 21, the upper and lower ends of the arched movable plate 21 are both provided with an inward concave structure and are clamped on the upper and lower ends of the movable notch 12 and the inward concave slide groove 22 on the periphery of the lower end, the middle part of the arched movable plate 21 is provided with a plurality of intubation holes 23 communicating with its two surfaces, the arched movable plate 21 is provided with a gas reservation cavity 24 on the periphery of the central area of ​​the intubation hole 23, the arched movable plate 21 is embedded with an elastic airbag tube 25 at the annular intersection of the intubation hole 23 and the gas reservation cavity 24, the middle part of the arched movable plate 21 is provided with a gas reservation cavity 24 communicating with each other A gas guide cavity 26 is provided on the outer circumferential surface of the arched movable plate 21. A gas compensation channel 27 which is an integral structure with the arched fixed frame 11 and is connected to the gas guide cavity 26 is provided at the end of the arched movable plate 21 which is protruding outwardly near the arched fixed frame 11. A gas valve 28 capable of controlling the flow of gas is installed inside the gas compensation channel 27. An annular structure which extends outward of the inner concave surface and acts as a tooth pad is provided at the center of the inner concave surface of the arched movable plate 21. The elastic airbag tube 25 is made of a rubber material with elastic extension function, and the elastic airbag tube 25 divides the intubation hole 23 and the gas reservation cavity 24 into an inner area and an outer area which are not connected to each other.

[0021] When in use, the elastic bandage 15 is worn around the patient's head circumference, and the arched fixing frame 11 is located outside the patient's lips, and the patient's teeth are bitten on the periphery of the arched movable plate 21, so that the arched movable plate 21 plays the role of a tooth pad. Finally, the buffer pad 14 is made to contact the cheek bone of the patient's face, and the tube body of the oral tracheal tube is inserted into the interior of each tube placement hole 23. An inflation device that can control the exhaust gas pressure is used, and the inflation port of the inflation device is connected to the gas compensation channel 27. The inflation device is started, and the gas enters the gas guide cavity 26 through the gas compensation channel 27, and then enters the gas reserved cavity 26 from the gas guide cavity 26. Inside the cavity 24, gas pressure is applied to the periphery of multiple elastic airbag tubes 25 at the same time. At this time, the inner diameter of the elastic airbag tube 25 is closed, thereby wrapping and clamping the outer circumference of the cannula, thereby increasing the clamping contact area to reduce the pressure of the air pressure on the cannula per unit area, thereby ensuring that the cannula can achieve an effective auxiliary fixation effect on the cannula while ensuring the accuracy of the medium flow. Finally, the discharge air pressure is controlled by the inflation device to control the clamping force of the elastic airbag tube 25 on the cannula. When the treatment is completed, the internal gas is released through the gas valve 28, so that the elastic airbag tube 25 retracts under the action of its own elasticity, and the cannula can be removed.

[0022] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary fixation device for oral tracheal intubation of critically ill patients, characterized by: include, An elastic telescopic fastening mechanism (1) is provided with an arched fixing frame (11) capable of being fitted around the periphery of the lips, a movable notch (12) provided in the middle of the arched fixing frame (11) and used to guide the components to slide along its surface, and an elastic bandage (15) embedded in both sides of the arched fixing frame (11) and capable of being worn around the patient's head circumference; and a pneumatic expansion clamping mechanism (2), which is provided with an arched movable plate (21) capable of being clamped in the movable notch (12) and capable of sliding along the surface of the arched fixing frame (11), a plurality of cannula placement holes (23) provided in the middle area of ​​the arched movable plate (21) and used for placing cannulas in a through manner, an elastic air bag tube (25) embedded in the periphery of the cannula placement hole (23) and which, when subjected to gas pressure, expands and closes inwardly to thereby wrap around and clamp the cannula, and a gas compensation channel (27) capable of guiding the gas end to the periphery of each elastic air bag tube (25); Furthermore, the materials used to make the elastic telescopic fastening mechanism (1) and the pneumatic expansion clamping mechanism (2) are sufficient to ensure that they will not deform during operation.

2. The orotracheal intubation auxiliary fixation device for critically ill patients according to claim 1, characterized in that: The elastic telescopic fastening mechanism (1) comprises an arched fixing frame (11), a hollow movable notch (12) is provided in the middle region of the arched fixing frame (11), belt body embedding grooves (13) with an inwardly concave structure are provided on both sides of the arched fixing frame (11), an elastic bandage (15) is installed between the two belt body embedding grooves (13), and a buffer pad (14) is installed on each side of the inwardly concave surface of the arched fixing frame (11) located at the movable notch (12).

3. The device for auxiliary fixation of oral tracheal intubation for critically ill patients according to claim 2, characterized in that: The curvature of the inner concave surface of the arched fixing frame (11) matches the curvature of the patient's face at the mouth and nose.

4. The orotracheal intubation auxiliary fixation device for critically ill patients according to claim 3, characterized in that: The buffer pad (14) and the elastic bandage (15) are both made of textile materials with elastic stretchability and breathability.

5. The orotracheal intubation auxiliary fixation device for critically ill patients according to claim 4, characterized in that: The pneumatic expansion clamping mechanism (2) includes an arched movable plate (21), the upper and lower ends of the arched movable plate (21) are both provided with an inward concave structure and are clamped in the inward concave sliding groove (22) on the periphery of the upper and lower ends of the movable notch (12), the middle portion of the arched movable plate (21) is provided with a plurality of insert tube placement holes (23) communicating with the two surfaces thereof, the arched movable plate (21) is provided with a gas reserved cavity (24) on the periphery of the middle area of ​​the insert tube placement hole (23), and the arched movable plate (21) is provided with a gas reserved cavity (24) at the annular intersection of the insert tube placement hole (23) and the gas reserved cavity (24). An elastic air bag tube (25) is embedded in the edge sealing type, and a gas guide cavity (26) is provided in the middle of the arched movable plate (21) to communicate with the outer circumference of each gas reserved cavity (24). The arched movable plate (21) is provided with a gas compensation channel (27) at the end of the arched fixed frame (11) that is integral with the arched fixed frame and communicates with the gas guide cavity (26). A gas valve (28) capable of controlling the flow of gas is installed inside the gas compensation channel (27). The center of the inner concave surface of the arched movable plate (21) is provided with an annular structure that extends to the outside of the inner concave surface and acts as a tooth pad.

6. The device for auxiliary fixation of oral tracheal intubation for critically ill patients according to claim 5, characterized in that: The elastic airbag tube (25) is made of a rubber material with elastic extension function, and the elastic airbag tube (25) divides the cannula placement hole (23) and the gas reservation cavity (24) into an inner area and an outer area that are not connected to each other.

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