JP2022154079A - Medical tube for use with user interface in respiratory therapy - Google Patents

Abstract

To provide a medical tube for supply respiratory gas to a subject during respiratory therapy.SOLUTION: A medical tube 100 is in fluid connection with a user interface 300 and a respiratory device. The medical tube has a tubular body, a first rib helically extending along the outer surface of the tubular body, and if necessary, a second rib disposed next to the first rib, and if necessary, a membrane encapsulating the first and/or second ribs thereby creating a helical space along the outer surface of the tubular body. In some embodiments, the first rib has a lumen and at least one wire disposed outside the lumen. In other embodiments, the first rib is free of any lumen and includes one or more wires extended therethrough. The lumen of the first rib or the helical space created by membrane encapsulation is configured to monitor the temperature, humidity, flow rate or pressure of the respiratory gas or an exhaled/inhaled gas of a subject.SELECTED DRAWING: Figure 1

Description

The present invention relates to a new design of medical tubing suitable for use in respiratory therapy to provide airflow during respiratory therapy.

Medical tubing is commonly used in respiratory therapy with breathing apparatus and user interfaces to deliver breathing gas to patients requiring assisted breathing. During operation, respiratory devices typically provide a stream of breathing gas to a subject at pressures greater than atmospheric pressure. along the subject's respiratory and/or expiratory gas path such that the amount of respiratory gas delivered is adjusted in a timely manner to ensure that the airflow of respiratory gas is delivered at certain desired parameters. Various sensors can be placed on the

The present invention is an improved design of conventional medical tubing. According to the present invention, a subject's expiratory gas and/or inspiratory gas flow, pressure and/or humidity can be controlled at locations other than those commonly known in the art (e.g., medical tubing or respiratory apparatus). (eg, lumen of a rib or spiral space along the outer surface of a medical tube).

The following presents a brief summary of the disclosure in order to provide the reader with a basic understanding. This summary is not an extensive overview of the disclosure and it does not identify key/critical elements of the invention or delineate the scope of the invention. Its sole purpose is to present some concepts disclosed herein in a simplified form as a prelude to the more detailed description that is presented later.

In one aspect, the present disclosure relates to a medical tube for supplying respiratory gas to a subject during respiratory therapy. The medical tubing is fluidly connected to the user interface and respiratory apparatus. The medical tube structurally includes a tubular body and a first rib spirally extending along an outer surface of the tubular body. The tubular body is configured to deliver respiratory gas from the respiratory device to the user interface. The first rib structurally includes a lumen and at least one wire. The lumen is fluidly connected to the user interface and the breathing apparatus. The wire is positioned external to the lumen and configured to heat respiratory gas within the tubular body and/or sense the temperature, humidity, flow rate or pressure of the respiratory gas within the tubular body.

According to another embodiment of the present disclosure, the first rib further includes one or more ridges each independently extending from the first rib. In certain embodiments, the second rib is solid and positioned next to said first rib. According to another embodiment, the second rib comprises at least one wire configured to heat the respiratory gas within the tubular body and/or detect the temperature, humidity, flow rate or pressure of the respiratory gas within the tubular body. including.

According to another embodiment, the medical tube further comprises a joint tube arranged at the free end or outer surface of the tubular body so as to be fluidly connected to the lumen of the first rib.

According to another embodiment, the medical tube further comprises a membrane covering the first rib such that a spiral space is formed along the outer surface of the tubular body. In a non-limiting embodiment, the first rib may or may not have a lumen.

In another aspect, the present disclosure relates to a respiratory system used for respiratory therapy on a subject. The respiratory system includes a medical tube, a user interface, and a respiratory apparatus according to any of the embodiments above. The user interface is fluidly connected to the medical tubing. The respiratory apparatus is fluidly and electrically connected to the medical tubing. The respiratory apparatus is configured to provide respiratory gas and to sense the flow or pressure of the subject's exhaled and/or inspired gas within the lumen or helical space.

Many of the attendant features and advantages of the present disclosure will be better understood with reference to the following detailed description considered in conjunction with the accompanying drawings.

The specification will be better understood from the following detailed description read in light of the accompanying drawings.

1 is a schematic illustration of a respiratory system 10 for providing respiratory gases to a subject during respiratory therapy, according to one embodiment of the present disclosure; FIG. FIG. 2A is a schematic diagram of the medical tube 100 of FIG. FIG. 2B is a schematic diagram of a portion of the medical tube 100 of FIG. 2A showing first rib 120 in cross-section. 2C and 2D are cross-sectional views of first rib 120, respectively, according to other embodiments of the present disclosure. 3A-3C are each schematic illustrations of a portion of the medical tube 100 of FIG. 2A in accordance with certain embodiments of the present disclosure showing various combinations of first and second ribs 120, 140 in cross-section. . 4A and 4B are schematic illustrations of a portion of medical tubing 100 according to further embodiments of the present disclosure. 5A and 5B are schematic illustrations of medical tube 100 connected to joint tube 160, according to some embodiments of the present disclosure. FIG. 6A is a schematic diagram of a portion of a medical tube 600 according to one embodiment of the present disclosure, showing first ribs 620 in cross-section. 6B and 6C are schematic illustrations of a portion of a medical tube 600, respectively, according to certain embodiments of the present disclosure, showing first rib 620 and second rib 640 in cross-section. 7A-7C are cross-sectional views of various configurations of first rib 620 of medical tube 600 according to some embodiments of the present disclosure.

DETAILED DESCRIPTION The detailed description provided below in conjunction with the accompanying drawings is intended to be illustrative of the embodiments and is not intended to represent the only forms in which the embodiments can be constructed or utilized. do not have. The following description sets forth the functionality of the example and the sequence of steps for configuring and operating the example. However, the same or equivalent functions and procedures may be accomplished by different implementations.

For convenience, certain terms used in the specification, examples and appended claims are collected here. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art.

The singular forms "a," "and," and "the" are used herein to include plural referents unless the context clearly dictates otherwise.

FIG. 1 is a schematic diagram showing a respiratory system 10 for providing a stream of respiratory gas to a subject during respiratory therapy. Respiratory system 10 typically includes at least a respiratory apparatus 200 and a user interface 300 connected by medical tubing 100 . Preferably, respiratory apparatus 200, user interface 300 and medical tubing 100 are electrically and fluidly connected to each other. User interface 300 can be any user interface known to those of ordinary skill in the art, including, but not limited to, masks, cannulas, and nasal pillows. For example, the mask may be a tracheal mask, face mask or nasal mask. In one embodiment, the user interface 300 may be any nasal cannula known to those skilled in the art, such as Taiwan Utility Model No. M576054U, the contents of which are all incorporated herein by reference. and the nasal cannula described in . Respiratory apparatus 200 may be any respiratory apparatus known and used by those skilled in the art. Respiratory apparatus 200 may generally include components and circuitry for regulating the flow of respiratory gas delivered to the target subject. Typically, respiratory apparatus 200 provides a stream of breathing gas (e.g., oxygen gas or air) to the subject through medical tubing 100 and user interface 300 at a predetermined pressure, flow rate, temperature and/or humidity. As shown, it may include a respiratory gas source 210, a controller 220, a plurality of sensors 230 and a humidifier 240 electrically connected together.

1. Medical Tubing of the Present Invention FIG. 2A is a schematic diagram showing a medical tubing 100 of the present invention. The medical tube 100 structurally includes a tubular body 110 and a first rib 120 spirally wound around the outer surface of the tubular body 110 . Preferably, tubular body 110 is internally hollow to facilitate connection with other components (e.g., adapters, joint tubes, etc.) and/or devices (e.g., user interface 300, respiratory apparatus 200, etc.); It includes two ends 112a, 112b (preferably lubricated ends). The first rib 120 has a lumen 121 and one or more wires 122 (e.g., 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 wires) (FIG. 2B). Preferably, lumen 121 is fluidly connected to respiratory apparatus 200 and user interface 300 of FIG. 1 to act as a channel for monitoring the pressure or flow of the subject's exhaled and/or inspired gas. be able to. The one or more wires 122 are each configured to independently heat the breathing gas within the tubular body 110 and/or sense the temperature, humidity, flow rate or pressure of the breathing gas within the tubular body 110 . According to a non-limiting embodiment, wire 122 is configured to detect the temperature, humidity, flow rate or pressure of gas within lumen 121 . As shown in FIG. 2B, the first rib 120 has a semi-cylindrical cross section, and two wires 122a and 122b are embedded in the first rib 120 so as to be independently positioned outside the lumen 121. . One wire is designated to heat the breathing gas within tubular body 110, while the other wire measures the temperature, humidity and/or temperature of the breathing gas within tubular body 110 via a plurality of sensors (not shown). or specified to detect pressure. The plurality of sensors may be placed in or on the tubular body, or at any location suitable for the purpose.

In a non-limiting embodiment, lumen 121 acts as a ventilation channel through which the subject's exhaled and/or inhaled gases can pass, thereby controlling parameters of the gas within lumen 121 (e.g., temperature, pressure, flow rate, etc.). , humidity, etc.), and the respiratory gas provided by respiratory apparatus 200 does not pass directly through lumen 121, even as pressurized gas. Accordingly, the channel of tubular body 110 through which breathing gas supplied from respiratory apparatus 200 passes is different from the channel of lumen 121 . In preferred embodiments, the parameter is the subject's exhaled and/or inspired gas flow rate or pressure. A measured flow or pressure value can be used as a reference value for pressure within the subject's nasal cavity.

In another embodiment, the first rib 120 further includes one or more ridges 123 (FIGS. 2C and 2D) each independently extending from the upper outer surface or one side of the first rib 120, and the first rib 120 It differs from the first rib 120 of FIG. 2B in that it includes two wires 122a, 122b passing through 120. FIG. In the embodiment shown in FIG. 2C, two ridges 123a, 123b each include wires 122c, 122d extending from the outer surface of the first rib 120 and passing independently through the ridges 123a, 123b. In the embodiment shown in FIG. 2D, the first rib 120 includes one ridge 123 extending from one side of the outer surface of the first rib 120 and includes two wires 122a, 122b passing through the first rib 120. is different from the first rib 120 in FIG. 2B. Note that the ridge may be free of wires. In some examples, the ridge may be devoid of a single wire as opposed to the case shown in Figures 2C or 2D.

In a further embodiment, in addition to the first rib 120, the medical tube 100 has one or more second ribs 140 ( For example, one, two or three secondary ribs) may also be included (FIGS. 3A-3C). The second ribs 140 may be the same as or different from the first ribs 120 in shape, size and/or configuration. In both the embodiments shown in FIGS. 3A and 3B, second rib 140 differs from first rib 120 in that it does not have lumen 121 . Moreover, the secondary ribs 140 shown in FIG. 3B are much smaller in size than the secondary ribs 140 of FIG. 3A. In the embodiment shown in FIG. 3C, the medical tube 100 has one first rib 120 and three second ribs 140a, which are parallel to each other and extend spirally along the outer surface of the tubular body 110, respectively. 140b and 140c. Further, similar to that shown in Figures 3A or 3B, each of the second ribs 140a, 140b, 140c differs from the first rib 120 in that they do not have lumens. Further, the first and second ribs may each be integrally formed with the tubular body 110 or may be formed independently of the tubular body 110 so as to be removably wrapped around the outer surface of the tubular body 110.

Further, the medical tube 100 is covered by the membrane 150 such that the first rib 120 and/or the second rib 140 are embedded in the membrane 150 and the spiral space 151 is formed along the outer surface of the tubular body 110. (Figs. 4A and 4B). Similar to the lumen 121 of the first rib 120, the helical space 151 also acts as a ventilation channel through which the subject's exhaled and/or inspiratory gases pass, thus allowing parameters of the gas within the helical space 151 (e.g., temperature, pressure, etc.) , flow rate, humidity, etc.). According to one embodiment, the respiratory gas supplied from respiratory apparatus 200 does not pass through helical space 151, even as pressurized gas. Accordingly, the channel of tubular body 110 through which respiratory gas supplied from respiratory apparatus 200 passes is different from the channel of helical space 151 .

In the embodiment shown in FIG. 4A, tubular body 110 has both first and second ribs 120, 140 wrapped around its outer surface and then covered with membrane 150. In the embodiment shown in FIG. In contrast, in the embodiment shown in FIG. 4B, the tubular body 110 has a first rib 120 wrapped around its outer surface and then covered by a membrane 150 , and a second rib 140 wrapped around the outer surface of the membrane 150 . Accordingly, the first rib 120 is embedded within the membrane 150 and the second rib 140 is disposed on the membrane 150 and extends spirally along the outer surface of the membrane 150 covering the tubular body 110 . In either embodiment shown in FIGS. 4A or 4B, the membrane coating forms a helical space 151 along the outer surface of tubular body 110 . This allows the subject's expired and/or inspired gas to be monitored during respiratory therapy to determine if a sufficient amount of respiratory gas has been supplied to the subject.

For the purpose of monitoring a subject's exhaled and/or inspiratory gases delivered from respiratory apparatus 200 during respiratory therapy, medical tube 100 is configured to extend through lumen 121 of first rib 120 shown in FIGS. may further include a joint tube 160 fluidly connected to the helical space 151 by (FIGS. 5A, 5B). This allows the pressure or flow of the subject's exhaled gas and/or inspired gas to be monitored and/or determined. As shown in Figures 5A and 5B, the joint tube 160 has a vent tube 162 formed within its body. The vent tube 162 is fluidly connected to the lumen 121 of the first rib 120 or the spiral space 151 by the membrane coating. Thereby, the subject's expiratory gas and/or inspiratory gas flow rate or pressure can be determined. The joint tube 160 has a size (e.g., length) that can cover at least a portion of the tubular body having the spirally extending first rib 120 on its outer surface and the free end 112 of the tubular body 110 (FIG. 5A). . Alternatively, joint tube 160 does not cover free end 112 of tubular body 110, but has a size sufficient to cover a portion of tubular body 110 having first ribs 120 wrapped around its outer surface (FIG. 5B).

Additionally, the tubular body or joint tube can be made of the same or different materials. Examples of materials suitable for manufacturing tubular bodies and/or joint tubes include silicone, polypropylene (PP), polyethylene (PE), polycarbonate (PC), polyvinyl chloride (PVC), polycaprolactone (PCL), acrylonitrile Butadiene Styrene (ABS), Polysulfone (PSU), Polycyclohexylene dimethylene terephthalate glycol (PCTG), Thermoplastic Elastomer (TPE), Thermopolyurethane (TPU), Thermoplastic Vulcanizate (TPV), Thermoplastic Styrene (TPS) ), thermoplastic polyester elastomers (TPEE), thermoplastic polyamide elastomers (TPA), HYTEL®, and the like. In another embodiment, materials suitable for manufacturing tubular bodies and/or joint tubes include, but are not limited to, foam materials.

2. Alternative Design of Medical Tubing of the Present Invention The medical device in this alternative design includes a tubular body, a first rib helically wrapped around the outer surface of the tubular body, and a membrane covering the first rib. Furthermore, the medical tube of this embodiment further includes a joint tube connected to the smooth end of the tubular body. The tubular body, membrane, and joint tube in this alternative design are the same as those described in Section 1 of this specification, and are therefore not described here. The first rib in this alternative design differs from Section 1 (eg, FIG. 2A) in that it has no lumen.

FIG. 6A is a schematic diagram illustrating a portion of a medical tube 600 having an alternative first rib design herein. The medical tube 600 includes a tubular body 610 , a first rib 620 spirally extending along the outer surface of the tubular body 610 , and a first rib 620 formed along the outer surface of the tubular body 610 to form a spiral space 652 . and a membrane 650 covering the ribs 620 . In this embodiment, the first rib 620 has no lumen and structurally includes one or more wires 622 passing through the first rib 620 . One or more wires 622 are each configured to independently heat the breathing gas within tubular body 610 and/or sense the temperature, humidity, flow rate or pressure of the breathing gas within tubular body 610 . As shown in FIG. 6A, first rib 620 has two wires 642 that extend the entire length of first rib 620 . One wire 642 is designated to heat the breathing gas within the tubular body 610, and the other wire 642 is designed to measure the temperature, humidity, and temperature of the breathing gas within the tubular body 610 by a plurality of sensors (not shown). , flow rate and/or pressure. The plurality of sensors may be placed in or on the tubular body, or at any location suitable for the purpose. The helical space 652 formed by the membrane coating also acts as a ventilation channel and is similar to the helical space 152 shown in Figures 4A or 4B and will not be described here.

Furthermore, in addition to the first ribs 620, the medical tube 600 has one or more second ribs 640 (eg, one rib 640) extending independently along the outer surface of the tubular body 610 parallel to the first ribs 620. , two or three secondary ribs) (FIGS. 6B and 6C). The second ribs 640 may be the same as or different from the first ribs 620 in shape, size and/or configuration. In the embodiment shown in FIG. 6B, the second ribs 640 are the same as the first ribs 620, while in the embodiment shown in FIG. 6C, the second ribs 640 are much smaller in size than the first ribs 620. . Further, similar to primary ribs 620, each secondary rib 640 may include one or more wires 642 passing therethrough. Further, the first and second ribs may each be integrally formed with tubular body 610 or may be formed independently of tubular body 610 so as to be removably wrapped around the outer surface of tubular body 610.

7A and 7B, the first rib 620 differs from the first rib 620 of FIG. 6A in that it further includes one or more ridges 623 each independently extending from the outer surface of the first rib 620. In the embodiment shown in FIG. 7A, two ridges 623a, 623b each independently extend from the upper outer surface of the first rib 620 and include wires 622c, 622d passing therethrough. The first rib 620 includes two wires 622a, 622b passing therethrough. In the embodiment shown in FIG. 7B, the first rib 620 further includes a ridge 623 extending from one side of its outer surface and includes two wires 622a, 622b that pass through the first rib 620 in that it is similar to that of FIG. 6A. is different from the first rib 620 of . Note that the ridge may be free of wires. In some examples, the ridge may be devoid of a single wire as opposed to the case shown in Figures 7A or 7B.

FIG. 7C shows an alternative form of first rib 620 applied to the medical tube 600 of the present invention. The first rib 620 in this embodiment has a groove 660 formed in one side of its body and extending its entire length, and two wires 622a, 622b embedded in the first rib 620. As shown in FIG.

It will be appreciated that the above descriptions of the embodiments are given as examples only and that various modifications can be made by those skilled in the art. The above specification, examples and data provide a complete description of the structure and use of exemplary embodiments of the invention. While various embodiments of the invention have been described above with certain particularities or with reference to one or more embodiments, those skilled in the art may make departures from the spirit or scope of the invention. Many modifications can be made to the disclosed embodiments.

Claims (15)

A medical tube for supplying respiratory gas to a subject, comprising:
the medical tubing is fluidly connected to a user interface and a respiratory device;
The medical tube includes a tubular body and a first rib,
the tubular body is for delivering respiratory gas from the respiratory device to the user interface;
the first rib extends spirally along the outer surface of the tubular body and includes a lumen and at least one wire;
the lumen is fluidly connected to the user interface and the breathing apparatus;
At least one of the wires is positioned external to the lumen and adapted to heat the respiratory gas within the tubular body and/or sense the temperature, humidity, flow rate or pressure of the respiratory gas within the tubular body. A medical tube, comprising: 2. The medical tube of Claim 1, wherein the first rib further includes one or more ridges each independently extending from the first rib. 3. The medical tube of Claim 2, wherein one or more of said ridges each include one or more wires extending therethrough independently. further comprising a second rib positioned next to the first rib;
the second rib includes at least one wire configured to heat the breathing gas within the tubular body and/or sense the temperature, humidity, flow rate or pressure of the breathing gas within the tubular body; The medical tube according to claim 1. 2. The medical tube of claim 1, further comprising a joint tube provided at the free end or outer surface of the tubular body and fluidly connected to the lumen. A medical tube for supplying respiratory gas to a subject, comprising:
the medical tubing is fluidly connected to a user interface and a respiratory device;
The medical tube includes a tubular body, a first rib and a membrane,
the tubular body is for supplying respiratory gas from the respiratory device to the user interface;
the first rib extends spirally along the outer surface of the tubular body and includes at least one wire;
The at least one wire is disposed within the first rib and is configured to heat the breathing gas within the tubular body and/or sense the temperature, humidity, flow rate or pressure of the breathing gas. ,
The medical tube, wherein the membrane covers the first rib such that a spiral space is formed along the outer surface of the tubular body. 7. The medical tube of Claim 6, wherein the first rib has no lumen. 7. The medical tube of Claim 6, wherein the first rib further includes one or more ridges or grooves each independently extending from its outer surface. 9. The medical tube of claim 8, wherein the one or more ridges each independently include one or more wires extending therethrough. further comprising a second rib positioned next to the first rib;
the second rib includes at least one wire;
at least one said wire is disposed within said second rib and is configured to heat said breathing gas within said tubular body and/or sense the temperature, humidity, flow or pressure of said breathing gas; The medical tube according to claim 6. further comprising a joint tube disposed at the free end or outer surface of the tubular body;
7. The medical tube of Claim 6, wherein the joint tube is fluidly connected to the helical space. A respiratory system for use in respiratory therapy for a subject, comprising a medical tube according to claim 1 or 6, a user interface and a respiratory apparatus, comprising:
The user interface is fluidly connected to a medical tube according to claim 1 or 6,
said respiratory apparatus being fluidly and electrically connected to the medical tubing of claim 1 or 6;
A respiratory system, wherein the respiratory apparatus is configured to provide respiratory gas and to detect the flow or pressure of the subject's exhaled and/or inspired gas within the lumen or helical space. 13. The respiratory system of claim 12, wherein said first rib further includes one or more ridges or grooves each independently extending from its outer surface. further comprising a second rib positioned next to the first rib;
the second rib includes at least one wire;
at least one said wire is disposed within said second rib and is configured to heat said breathing gas within said tubular body and/or sense the temperature, humidity, flow or pressure of said breathing gas; 13. The respiratory system of claim 12. further comprising a joint tube disposed at the free end or outer surface of the tubular body;
13. The respiratory system of Claim 12, wherein the joint tube is fluidly connected to the lumen or the helical space.

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