Tracheal tube device

Abstract

The utility model relates to a tracheal catheter device, including the pipe body, the sleeve and the inflation pipe, and the tracheal catheter device still includes the film pressure sensitive sensing sheet and real -time monitoring system, the film pressure sensitive sensing sheet is covered on the pipe body outer wall, the film pressure sensitive sensing sheet is provided with two layers of flexible base inside and outside, and the opposite surface of two layers of flexible base is provided with equal number a plurality of pressure sensitive conductive strips respectively, wherein, the pressure sensitive conductive strip of two layers of flexible base is arranged mutually crossing, and the two pressure sensitive conductive strips of each cross position are connected with the two electrodes of real -time monitoring system respectively, thereby make each cross position on the pipe body outer wall form pressure sensing site. According to the utility model, can measure the pressure of the pipe body outer wall to soft tissue widely, and the pressure value distribution of measurement is transmitted to real -time monitoring system and shows and early warning, can effectively avoid the complication situation caused by tracheal catheter.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a tracheal tube device. Background Technology

[0002] The endotracheal tube is used clinically to maintain a patient's airway patency. During use, an expanded cuff secures the endotracheal tube to the trachea below the glottis. Current technology using endotracheal tube cuff pressure sensors can only sense the pressure of the cuff on the localized inner wall of the trachea below the glottis. However, this method cannot accurately reflect the pressure widely distributed on the outer wall of the endotracheal tube in the oral cavity and airway tissues. Therefore, it cannot identify excessive pressure exerted by the endotracheal tube on soft tissues, or unnecessary pressure caused by the endotracheal tube on the oral mucosa, tongue base, and other tissues. Utility Model Content

[0003] This utility model provides a tracheal tube device.

[0004] Specifically, this utility model is achieved through the following technical solution:

[0005] This invention provides a tracheal tube device, including a tube body, a cuff, and an inflation tube. The tube body has air ports at its proximal and distal ends. The cuff is disposed on the outer wall of the tube body and communicates with the inflation tube. The tracheal tube device also includes a thin-film pressure-sensitive sensor and a real-time monitoring system. The thin-film pressure-sensitive sensor covers the outer wall of the tube body and has two flexible substrates, inner and outer. Multiple pressure-sensitive conductive strips of equal number are disposed on the opposing surfaces of the two flexible substrates. The pressure-sensitive conductive strips of the two flexible substrates are arranged in a crisscross pattern. At each intersection, two pressure-sensitive conductive strips are electrically connected to two electrodes of the real-time monitoring system, thereby creating a pressure sensing position at each intersection on the outer wall of the tube body.

[0006] In some embodiments, the pressure-sensitive conductive strips of the two flexible substrates are arranged perpendicularly to each other.

[0007] In some embodiments, the pressure-sensitive conductive strips of the two flexible substrates are arranged along the axial and circumferential directions of the tube body, respectively.

[0008] In some embodiments, the pressure-sensitive conductive strip of the inner flexible substrate is arranged along the axial direction of the tube body, and the pressure-sensitive conductive strip of the outer flexible substrate is arranged along the circumferential direction of the tube body.

[0009] In some embodiments, the flexible substrate is formed as a strip corresponding to the pressure-sensitive conductive strip disposed on its surface.

[0010] In some embodiments, adjacent strips of the flexible substrate are arranged closely adjacent to each other.

[0011] In some embodiments, the thin-film pressure-sensitive sensor completely covers the outer wall of the tube in a 360-degree manner.

[0012] In some embodiments, the real-time monitoring system includes a resistance conversion module, an analog-to-digital conversion module, and a signal display module. Each pressure-sensitive conductive strip is electrically connected to the resistance conversion module, and the analog-to-digital conversion module is electrically connected between the resistance conversion module and the signal display module.

[0013] In some embodiments, the real-time monitoring system further includes a power supply module, which is electrically connected to the resistance conversion module and the analog-to-digital conversion module.

[0014] In some embodiments, a Murphy aperture is formed in the tube near the proximal end.

[0015] According to this invention, two flexible substrates, consisting of a thin-film pressure-sensitive sensor, are sequentially wrapped around the outer wall of the tube from the inside out. Multiple pressure sensing points are formed by the intersecting pressure-sensitive conductive strips arranged on the opposing surfaces of the two flexible substrates, distributing these points across the outer wall of the tube. This allows for the wide measurement of local pressure exerted on soft tissues by the outer wall of the tube, and the transmission of the measured pressure distribution to a real-time monitoring system for display and early warning. This effectively prevents complications caused by endotracheal tubes. The thin-film pressure-sensitive sensor has high sensitivity, accurately reflecting changes in local pressure. The sensing structure is simple, and the methods for endotracheal intubation, tube fixation, and extubation are the same as traditional methods, making it easy for medical personnel to operate and use. It is suitable for all types of patients requiring endotracheal intubation, especially those in special surgical positions, intensive care, or with long-term indwelling catheters.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] Figure 1 This is a front view of the endotracheal tube device in one embodiment of the present invention;

[0019] Figure 2 This is a rear view of the endotracheal tube device in one embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the unfolded state of the outer flexible substrate of the thin-film pressure-sensitive sensor in one embodiment of the present invention;

[0021] Figure 4This is a schematic diagram of the unfolded state of the inner flexible substrate of the thin-film pressure-sensitive sensor in one embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the constituent modules of a real-time monitoring system according to one embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the dynamic pressure display of the endotracheal tube in one embodiment of the present invention.

[0024] Figure label:

[0025] 1: Tube body; 2: Interface; 3: Inflation tube; 4: Luer connector; 5: Thin-film pressure-sensitive sensor; 51: Outer flexible substrate; 52: Connecting wire; 53: Connecting terminal; 54: Inner flexible substrate; 6: Sheath; 7: Murphy orifice. Detailed Implementation

[0026] This disclosure will now be discussed with reference to several embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement this disclosure, and are not intended to imply any limitation on the scope of this disclosure.

[0027] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to"; the terms "embodiment" and "one embodiment" are to be interpreted as "at least one embodiment"; the term "another embodiment" is to be interpreted as "at least one other embodiment"; the terms "first," "second," etc., may refer to different or the same objects; the term "setup" is not limited to direct or indirect connections, nor to a specific connection method. Other explicit and implicit definitions may also be included below; the term "distal" refers to the direction in which the tip of the puncture needle points, and "proximal" refers to the direction opposite to "distal." Other explicit and implicit definitions may also be included below.

[0028] Specific numerical values ​​or ranges may be referred to in the following description. It should be understood that these values ​​and ranges are merely exemplary and may be helpful in putting the ideas of this disclosure into practice. However, the description of these examples is not intended to limit the scope of this disclosure in any way. These values ​​or ranges may be set differently depending on the specific application scenario and requirements.

[0029] As mentioned above, existing endotracheal tube devices cannot accurately reflect the pressure widely distributed on the outer wall of the endotracheal tube in the oral cavity and airway tissues, thus failing to identify excessive pressure on soft tissues or unnecessary pressure on the oral mucosa, tongue base, and other tissues caused by the endotracheal tube. The endotracheal tube device proposed in the embodiments of this utility model at least partially solves the above-mentioned problems. Figures 1-5As shown, the endotracheal tube device of this embodiment generally includes a tube body 1, a cuff 6, an inflation tube 3, a thin-film pressure-sensitive sensor 5, and a real-time monitoring system. The cuff 6 is disposed on the outer wall of the tube body 1 and is connected to the inflation tube 3. Inflation is made into the cuff 6 through the inflation tube 3, so that the cuff 6 can expand and be fixed to the trachea below the glottis of the patient. A Luer connector 4 is provided at the end of the inflation tube 3. The thin-film pressure-sensitive sensor 5 covers the outer wall of the tube body 1 and is used to form multiple sensing positions distributed on the outer wall of the tube body 1. The real-time monitoring system is used to receive and process the real-time pressure measurement data transmitted by the sensing positions, and to visualize and alarm the measurement data after calculation.

[0030] During the insertion of the tube 1 into the patient's airway, the end that first enters the airway is defined as the "proximal end," and the opposite end is defined as the "distal end." Air ports are formed at both the proximal and distal ends of the tube 1, allowing gas to flow between them. An interface 2 is provided at the proximal air port of the tube 1 for a sealed connection with the gas supply mechanism. In one embodiment, a Murphy orifice 7 is formed near the proximal end of the tube 1, allowing breathing gas to enter and exit through the Murphy orifice 7 when the proximal air port of the endotracheal tube is adhered to the tracheal wall.

[0031] The thin-film pressure-sensitive sensor 5 is provided with two flexible substrates. The inner flexible substrate 54 covers the outer wall of the tube 1, and the outer flexible substrate 51 covers the outer layer of the inner flexible substrate 54 and forms multiple mutually conductive pressure sensing positions with the inner flexible substrate 54. The pressure sensing positions are distributed throughout the entire area of ​​the outer wall of the tube 1, thereby enabling extensive measurement of the contact pressure between the outer wall of the tube 1 and the tissue. Specifically, the surface of the inner flexible substrate 54 is provided with multiple pressure-sensitive conductive strips, and the surface of the outer flexible substrate 51 is also provided with multiple pressure-sensitive conductive strips. The pressure-sensitive conductive strips of the inner flexible substrate 54 and the outer flexible substrate 51 are arranged opposite each other and are equal in number. When the outer flexible substrate 51 covers the inner flexible substrate 54, the pressure-sensitive conductive strips of the two flexible substrates are arranged in a cross pattern. The pressure-sensitive conductive strip on the inner flexible substrate 54 forming each cross position is electrically connected to one electrode of the real-time monitoring system, and the pressure-sensitive conductive strip on the outer flexible substrate 51 forming the cross position is electrically connected to the other electrode of the real-time monitoring system. Thus, when the outer wall of the tube 1 is subjected to tissue pressure at the cross position, the two pressure-sensitive conductive strips forming the cross position will change from an open state to a conductive state, or from a slightly contact pressure conductive state to a larger contact pressure conductive state. Both changes will cause a change in the conduction resistance, thereby sensing the pressure change at the cross position.

[0032] In one embodiment, the inner flexible substrate 54 and the outer flexible substrate 51 can be a complete flexible substrate, and multiple pressure-sensitive conductive strips are disposed on the surface of the complete flexible substrate by means of coating, sputtering, etc. The complete flexible substrate can ensure that the relative positions between the multiple pressure-sensitive conductive strips remain stable. In another embodiment, the inner flexible substrate 54 and the outer flexible substrate 51 can be formed into strips corresponding to the pressure-sensitive conductive strips, such as... Figure 3 and Figure 4 As shown, pressure-sensitive conductive strips are respectively arranged on the multiple strip-shaped surfaces of the flexible substrate. This arrangement allows the inner flexible substrate 54 and the outer flexible substrate 51 to flexibly adapt to the shape of the outer wall of the tube 1 during the wrapping process.

[0033] In one embodiment, such as Figure 3 and Figure 4 As shown, the multiple strips of the inner flexible substrate 54 and the outer flexible substrate 51 are arranged closely adjacent to each other, that is, there are no gaps between adjacent strips and they do not overlap each other, thus forming the maximum number of pressure sensing positions. In another embodiment, there may be gaps between the multiple strips of the inner flexible substrate 54 and the outer flexible substrate 51, that is, the multiple strips are arranged in an array with intervals.

[0034] In one embodiment, the pressure-sensitive conductive strips of the inner flexible substrate 54 and the outer flexible substrate 51 can be arranged perpendicularly to each other. In the state of perpendicular cross arrangement, the cross area of ​​the pressure-sensitive conductive strips can be minimized, thereby obtaining more pressure sensing positions and improving the pressure sensing resolution.

[0035] In one embodiment, the extension directions of the pressure-sensitive conductive strips of the inner flexible substrate 54 and the outer flexible substrate 51 are the axial and circumferential directions of the tube body, respectively, thereby making the pressure-sensitive conductive strip in the covered state flatter and ensuring pressure sensing accuracy. For example, as shown... Figure 3 and Figure 4 As shown, the pressure-sensitive conductive strip of the inner flexible substrate 54 is arranged along the axial direction of the tube body, and the pressure-sensitive conductive strip of the outer flexible substrate 51 is arranged along the circumferential direction of the tube body.

[0036] In one embodiment, the inner flexible substrate 54 completely covers the outer wall of the tube 1 in 360 degrees, forming a closure between the first strip and the last strip, and the outer flexible substrate 51 completely covers the outer layer of the inner flexible substrate 54 in 360 degrees, forming a closure between the first strip and the last strip. This arrangement ensures that the pressure value in the 360-degree area of ​​the outer wall of the tube 1 can be sensed.

[0037] In one embodiment, each pressure-sensitive conductive strip of the inner flexible substrate 54 and the outer flexible substrate 51 is electrically connected to the electrodes of the real-time monitoring system via a connecting line 52 and a connecting terminal 53.

[0038] In one embodiment, such as Figure 5 As shown, the real-time monitoring system includes a resistance conversion module, an analog-to-digital conversion module, and a signal display module. The inner flexible substrate 54 and the outer flexible substrate 51 are electrically connected to the resistance conversion module at each sensing position. The analog-to-digital conversion module is electrically connected between the resistance conversion module and the signal display module. Each sensing position obtains resistance value change data. The resistance conversion module converts the resistance value into a voltage value via a voltage divider circuit and outputs an analog voltage signal. The analog voltage signal is then converted into a digital voltage signal by the analog-to-digital conversion module and displayed in the signal display module. For example, as shown... Figure 6 As shown, the pressure conditions of each sensing position on the outer wall of the tube 1 can be displayed through a three-dimensional thermal image, including the pressure value, pressure area and stress of the sensing position, as well as the derived pressure change contour map and the dynamic numerical change output of the applied pressure.

[0039] The description of the embodiments herein, including any references to directions and orientations, is for ease of description only and should not be construed as limiting the scope of protection of this utility model. The description of preferred embodiments involves combinations of features, which may exist independently or in combination; this utility model is not particularly limited to the preferred embodiments. The scope of this utility model is defined by the claims.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A tracheal tube device comprising a tube body, a cuff and an inflation tube, the tube body forming a gas port at its proximal end and distal end, respectively, the cuff being provided on the outer wall of the tube body and being in communication with the inflation tube, characterized in that, The endotracheal tube device also includes a thin-film pressure-sensitive sensor and a real-time monitoring system. The thin-film pressure-sensitive sensor covers the outer wall of the tube body and has two flexible substrates, inner and outer. The opposing surfaces of the two flexible substrates are each provided with an equal number of pressure-sensitive conductive strips. The pressure-sensitive conductive strips of the two flexible substrates are arranged in a crisscross pattern. The two pressure-sensitive conductive strips at each intersection are electrically connected to the two electrodes of the real-time monitoring system, thereby forming a pressure sensing position at each intersection distributed on the outer wall of the tube body.

2. The endotracheal tube device according to claim 1, characterized in that, The pressure-sensitive conductive strips of the two flexible substrates are arranged perpendicularly to each other.

3. The endotracheal tube device according to claim 2, characterized in that, The pressure-sensitive conductive strips of the two flexible substrates are arranged along the axial and circumferential directions of the tube, respectively.

4. The endotracheal tube device according to claim 3, characterized in that, The pressure-sensitive conductive strip of the inner flexible substrate is arranged along the axial direction of the tube body, and the pressure-sensitive conductive strip of the outer flexible substrate is arranged along the circumferential direction of the tube body.

5. The endotracheal tube device according to any one of claims 1-4, characterized in that, The flexible substrate is formed into a strip shape corresponding to the pressure-sensitive conductive strip disposed on its surface.

6. The endotracheal tube device according to claim 5, characterized in that, The adjacent strips of the flexible substrate are arranged in close proximity.

7. The endotracheal tube device according to claim 1, characterized in that, The thin-film pressure-sensitive sensor is completely covered by the outer wall of the tube in a 360-degree manner.

8. The endotracheal tube device according to claim 1, characterized in that, The real-time monitoring system includes a resistance conversion module, an analog-to-digital conversion module, and a signal display module. Each pressure-sensitive conductive strip is electrically connected to the resistance conversion module, and the analog-to-digital conversion module is electrically connected between the resistance conversion module and the signal display module.

9. The endotracheal tube device according to claim 1, characterized in that, The real-time monitoring system also includes a power supply module, which is electrically connected to the resistance conversion module and the analog-to-digital conversion module.

10. The endotracheal tube device according to claim 1, characterized in that, The tube body forms a Murphy aperture near the proximal end.

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