WO2015013383A1 - Gaine de canule trachéale - Google Patents

Gaine de canule trachéale Download PDF

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Publication number
WO2015013383A1
WO2015013383A1 PCT/US2014/047775 US2014047775W WO2015013383A1 WO 2015013383 A1 WO2015013383 A1 WO 2015013383A1 US 2014047775 W US2014047775 W US 2014047775W WO 2015013383 A1 WO2015013383 A1 WO 2015013383A1
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WO
WIPO (PCT)
Prior art keywords
sheath
medical device
endotracheal tube
control layer
microbial control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2014/047775
Other languages
English (en)
Inventor
Matthew LEDGES
Mike FALLON
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MEDICAL INSTRUMENT VENTURES LLC
Original Assignee
MEDICAL INSTRUMENT VENTURES LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MEDICAL INSTRUMENT VENTURES LLC filed Critical MEDICAL INSTRUMENT VENTURES LLC
Publication of WO2015013383A1 publication Critical patent/WO2015013383A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/04—Tracheal tubes
    • A61M16/0488—Mouthpieces; Means for guiding, securing or introducing the tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/04—Tracheal tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/04—Tracheal tubes
    • A61M16/0402—Special features for tracheal tubes not otherwise provided for
    • A61M16/0427—Special features for tracheal tubes not otherwise provided for with removable and re-insertable liner tubes, e.g. for cleaning
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/04—Tracheal tubes
    • A61M16/0434—Cuffs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A61M2205/0205—Materials having antiseptic or antimicrobial properties, e.g. silver compounds, rubber with sterilising agent
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A61M2205/0238—General characteristics of the apparatus characterised by a particular materials the material being a coating or protective layer

Definitions

  • the present disclosure relates to medical devices. More particularly, the disclosure relates to protective sheaths for tracheal tube devices such as endotracheal tubes.
  • Tracheal intubation is an established procedure for controlling the airway of patients undergoing certain types of medical procedures.
  • Conventional methods of tracheal intubation include the insertion of a tubular device, such as an endotracheal tube, through the patient's mouth and into the patient's trachea.
  • the distal end of the endotracheal tube is then positioned above the patient's carina to allow air to pass through the tube and into the lungs.
  • the tube is often coupled to an air source, such as a ventilator, to mechanically assist with oxygenation and ventilation of the lungs.
  • the medical professional may use various devices to improve their line of sight, such as, for example, laryngoscopes, flexible fiberoptic bronchoscopes, or video laryngoscopes.
  • the gaps between the outer walls of the endotracheal tube and trachea should be sufficiently sealed. Sealing the passageway may be accomplished by using an inflatable cuff provided around the endotracheal tube near the distal end of the tube. Before sealing the passageway, the cuff is generally positioned within the trachea, below the vocal cords, and above the carina. Once inflated, the cuff may also act as an anchor below the vocal cords to help prevent displacement of the tube.
  • tracheal tube devices Although this method of treatment has been successful, problems remain.
  • a common problem with using tracheal tube devices is that during or prior to placement of the tube, the distal end of the tube may be contaminated with flora, mucus, saliva, blood, vomit, and other contaminates from the patient's mouth or oropharynx, and/or the surrounding environment.
  • the contaminated distal end of the tube may push the contaminants into the trachea or a main stem bronchus, potentially causing infections such as ventilator associated pneumonia leading to increased morbidity and mortality— markedly increasing the cost of care for these patients.
  • the art of the present invention differs substantially from the art of stents in the area of delivery, strength, dimensions, function, components, corresponding supporting surgical devices, wall construction, and removability.
  • the disclosure is directed to several alternative designs, materials, and methods of manufacturing protective sheaths for tracheal tube devices such as endotracheal tubes. It shall not limit the invention in any respect.
  • a detailed and fully enabling disclosure is set forth in the detailed description section.
  • One embodiment of the present invention may include a sheath for protecting an endotracheal tube assembly during intubation of a patient.
  • the sheath may be sized and configured to substantially house an endotracheal tube having a curve along its length from a proximal end to a distal end.
  • the sheath may be advantageously configured to protect the distal half and distal end of the endotracheal tube from contaminates during and prior to intubation, such as, for example flora, mucus, saliva, blood, vomit, and other contaminates from the patient's mouth or oropharynx, and/or the surrounding environment. If left unprotected the distal end of the tube may deliver such contaminants into the trachea or a main stem bronchus, potentially causing infections such as ventilator associated pneumonia leading to increased morbidity and mortality.
  • the sheath may include distal and proximal ends, an inner diameter forming an elongated inner portion and an outer diameter forming an elongated outer portion.
  • the elongated inner portion being substantially adjacent to the endotracheal tube.
  • the cross-sectional shape of the elongated inner and outer portion may have a generally tubular or cylindrical flexible structure that is configured to conform around the endotracheal tube.
  • the cross-sectional shape of the elongated inner and outer portion may alternatively be substantially ellipsoidal, rectangular, hexagonal, rectangular, square, or polygonal in shape.
  • the distal end of the sheath may substantially cover the distal end of the endotracheal tube.
  • the sheath may include a substantially small slit that opens as the distal end of the tube slides through the sheath.
  • the sheath may include a deformed, tapered, and/or textured portion towards the distal end of the sheath.
  • the deformed, tapered, and/or textured portion may be sized and configured to provide resistance against the patient's vocal cords or supraglottic structures near the vocal cords before the distal end of the endotracheal tube enters the trachea.
  • the vocal cords or surrounding supraglottic structures restrict the deformed or tapered portion of the sheath by applying a force against the sheath in the longitudinal direction parallel to the endotracheal tube. As force is applied, the distal end of the endotracheal tube is allowed to slide through the sheath and into the trachea while the distal end of the sheath remains proximal to the vocal cords.
  • the tapered portion is sized and configured to substantially cover the distal end of the endotracheal tube while still allowing for an air/oxygen mixture or anesthetic gas to flow through the endotracheal tube.
  • the degree of taper, curvature and/or linearity at different parts of the sheath may vary.
  • the distal end of the sheath may be tapered differently or opposite, or may be generally symmetrical, without substantial taper from one end to the other.
  • other sheath shapes having straight walls, curved walls, or combinations of straight and curved walls are possible and are within the scope of the present disclosure.
  • the sheath may be formed from materials having suitable mechanical properties resistant to punctures, tears, pin holes, and chemical properties to provide for flexibility, as well as biocompatibility.
  • the materials may include polyurethane or polyurethane-based compositions having suitable mechanical and chemical properties. Other materials may be suitable that exhibit properties enabling them to be processed into a protective sheath.
  • the sheath may be desirable to form the sheath from an antimicrobial material or for the sheath to include a microbial control layer.
  • the sheath or microbial control layer may be formed from hydrophobic polymers including a hydrophilic polymer or other antimicrobial materials.
  • the sheath material or microbial control layer may comprise a metal, such as gold, copper, or silver that exhibits antimicrobial properties.
  • the sheath material or microbial control layer may include an acrylamide polymerization solution (i.e., polyacrylamide solution) that may be polymerized and crosslinked by thermal initiation such as ultraviolet radiation. The pore size of the solution may be controlled by altering the amount of crosslinking and the percent of solids in the monomer solution.
  • the microbial control layer may be applied to the sheath by dipping the sheath into a polyacrylamide solution.
  • the thickness of the microbial control layer may be altered by varying the number of times or duration that the sheath is dipped into the polyacrylamide solution.
  • the microbial control layer may be applied to both the elongated inner and outer portion of the sheath.
  • the microbial control layer may also be extruded, molded, co-extruded, blow-molded, electrostatically applied, or sprayed onto the sheath.
  • the sheath or microbial control layer may have reflective or radiopaque properties.
  • the sheath or microbial control layer may comprise antimicrobial metal having sufficient reflective properties. Accordingly, in some embodiments, a medical professional may be able to detect the sheath or portions of the sheath by ultrasonography or by other detection devices.
  • the sheath may include a tether attached to the proximal end of the sheath and extending towards the proximal end of the endotracheal tube.
  • the length of the tether may vary depending on the length of the sheath.
  • the tether may help a medical professional slide the sheath to a position proximal to the patient's mouth during or after intubation. Under certain circumstances it may be important for a medical professional to have a free hand to operate various devices, such as, for example, a laryngoscope. Accordingly, in one embodiment, the sheath is sized and configured to allow a medical professional to slide the sheath with one hand while intubating a patient— thereby freeing the other hand.
  • the tether may be sized and configured to allow a medical professional to slide the sheath with one hand by using a thumb.
  • the sheath may be removed or secured into position in the proximal position to the patient's mouth.
  • the sheath is void of exterior tear- away perforations that may collect or harbor microbes.
  • the sheath may be sized and configured to house various sizes of endotracheal tubes including a number of feature refinements and additional features applicable to the endotracheal tube.
  • the endotracheal tube may include a cuff operatively associated with at least one pilot balloon or syringe assembly for deflating and inflating the cuff.
  • the pilot balloon assembly may include a pilot balloon pump in the form of a syringe and at least one conduit having a distal end terminating within the cuff and a proximal end that may be coupled to a syringe.
  • the conduit may be positioned along the inner portion of the endotracheal tube for delivering or extracting a fluid, such as air, to or from the rolling cuff.
  • Another embodiment is a method for manufacturing the sheath.
  • the size and shape of the sheath may be formed by various methods. For example, injection molding, blow molding, stretch molding, extrusion, dip molding, casting, or any other suitable technique.
  • the sheath may be manufactured to include a slight taper, being wider at the distal end, as discussed above.
  • the sheath may also be simultaneously formed with the tether.
  • the tether may be attached to the sheath after the main body, including the elongated inner and outer portion of the sheath, is formed.
  • the tether may be attached to the main body adhesively, fixed or coupled with solvent bonding, vibration welding, induction welding, mechanical fastening, or by any other biocompatible means that would provide for a sufficient attachment method.
  • FIG. 1 is a perspective view of an exemplary protective sheath housing an endotracheal tube assembly in accordance with one embodiment of the invention
  • FIG. 2 is a perspective view of the sheath transitioning towards the proximal end of the endotracheal tube
  • FIG. 2A is a perspective view of the sheath continuing to transfer towards the proximal end of the endotracheal tube;
  • FIG. 2B is a perspective view of the sheath compressed near the proximal end of the endotracheal tube
  • FIG. 3 is a perspective view of the distal end of the sheath having a deformed or tapered section substantially covering the distal end of the endotracheal tube;
  • FIG. 4 is a partial plain view of an exemplary protective sheath and endotracheal tube assembly before having the distal end of the endotracheal tube pass through the vocal cords of a patient;
  • FIG. 5 is a partial plain view of an exemplary protective sheath and endotracheal tube assembly after the distal end of the endotracheal tube passes through the vocal cords of the patient;
  • FIG. 6 is a partial plain view of an exemplary protective sheath and endotracheal tube assembly after the distal end of the endotracheal tube is positioned within the trachea and the protective sheath is retracted to a position proximal to the mouth of the patient;
  • FIG. 7 is a coronal cross-sectional view of FIG. 4 illustrating the protective sheath and endotracheal tube assembly before having the distal end of the endotracheal tube pass through the vocal cords of the patient;
  • FIG. 8 is a coronal cross-sectional view of FIG. 5 illustrating the protective sheath and endotracheal tube assembly after the distal end of the endotracheal tube passes through the vocal cords of the patient; and [0031] FIG. 9 is a coronal cross-sectional view of FIG. 6 illustrating the protective sheath and endotracheal tube assembly after the distal end of the endotracheal tube is positioned within the trachea and the protective sheath is in the process of being retracted to a proximal position.
  • Sheath 14 may comprise a distal end 38 and proximal end 32, a tapered portion 25, an inner diameter forming an elongated inner portion 36 and an outer diameter forming an elongated outer portion 37, as well as tether 34.
  • Endotracheal tube assembly 10 may comprise a distal end 22 and proximal end 24, cuff 12, tube 20 having inner portion 40 and outer portion 42, beveled portion 23, adapter 44, syringe 16, conduit 26, and port 28.
  • Sheath 14 may be sized and configured to protect the distal half and distal end
  • Microbial contaminants may include, for example, Streptococcus, Candida albicans (yeast), phomonas multiphilia, Pseudomonas aeruginosa, Staphylococcus aureus, Enterobacter spp, and Haemophilus influenza.
  • tube 20 including distal end 22 and cuff 12 may deliver contaminants into the trachea 66 or a main stem bronchus 84, potentially causing infections such as ventilator associated pneumonia leading to increased morbidity and mortality.
  • sheath 14 In order to protect the distal end 22 of tube 20, the elongated inner portion 36 of sheath 14 is positioned substantially adjacent to tube 20.
  • Sheath 14 may be sized and configured to protect the portion of tube 20 that enters the trachea 66, including an inflatable cuff 12.
  • Sheath 14 may comprise a flexible material that conforms to a slight curve along the length of tube 20 and over cuff 12. Sheath 14 may extend along tube 20 to cover the distal half of tube 20.
  • sheath 14 may be advantageously sized and configured to allow a medical professional or technician to retract and anchor sheath 14 to tube 20 in a position proximal to the mouth 74 of patient 78 during or after intubation.
  • the cross-sectional shape of the elongated inner portion 36 and outer portion 37 of sheath 14 may have a generally tubular or cylindrical flexible structure that is configured to help conform around the endotracheal tube 20 and cuff 12.
  • the cross-sectional shape of the elongated inner portion 36 and outer portion 37 may alternatively be substantially ellipsoidal, rectangular, hexagonal, rectangular, square, or polygonal in shape.
  • sheath 14 may be positioned adjacent to tube 20 by a medical professional or technician by sliding distal end 22 of tube 20 through proximal end 32 of sheath 14.
  • the size and shape of sheath 14 may be formed by various methods. For example, injection molding, blow molding, stretch molding, extrusion, dip molding, casting, or any other suitable technique.
  • Sheath 14 may also be simultaneously formed with tether 34.
  • tether 34 may be attached to the proximal end 32 of sheath 14 after sheath 14 is formed.
  • Tether 34 may be attached to sheath 14 adhesively, fixed or coupled with solvent bonding, vibration welding, induction welding, mechanical fastening, or by any other biocompatible means that would provide for a sufficient attachment method.
  • Tether 24 may also comprise an end portion such as a loop that is sized and configured to fit over a medical professional's thumb to allow the medical professional to single-handily slide the sheath 14 during intubation.
  • the end portion of tether 24 may comprise a hook or fastener that may allow a medical professional to single-handily slide the sheath 14 during intubation.
  • sheath 14 may be manufactured to include tapered portion 25— being wider at the distal end 38.
  • the tapered portion 25 of sheath 14 may be sized and configured to provide resistance against the vocal cords 62 or supraglottic structures 60 before the distal end 22 of tube 20 enters the trachea 66, as will be discussed below in reference to FIGs. 4-9.
  • the sheath 14 may not include a tapered portion 25.
  • the tapered portion 25 may be sized and configured to substantially cover the distal end 22 of tube 20, including beveled portion 23, while still allowing for an air/oxygen mixture or anesthetic gas to flow through the endotracheal tube 20, as shown in FIG. 3.
  • the degree of taper, curvature, and/or linearity at different parts of the sheath 14 may vary.
  • the distal end 38 of sheath 14 may be tapered differently or opposite, or may be generally symmetrical, without substantial taper from one end to the other.
  • other sheath 14 shapes having straight walls, curved walls, or combinations of straight and curved walls are possible and are within the scope of the present disclosure.
  • sheath 14 is sized and configured to slide along tube 20 to a proximal position during or after intubation. As discussed above, when distal end 38 of sheath 14 contacts the vocal cords 62 or supraglottic structures 60, the distal end 22 of tube 20 begins to slide through sheath 14. In some embodiments, a medical professional may assist the sheath 14 in sliding along tube 20 by pulling tether 34 or the proximal end 32 of sheath 14. Sheath 14 may then be secured in a scrunched position to tube 20 proximal to the mouth 74 of patient 78.
  • Sheath 14 may be secured with tether 34 or by other means such as adhesive tape or mechanical attachments such as a clip, hook, or fastener. A medical professional may alternatively cut or remove sheath 14 from tube 20. Sheath 14 is void of exposed perforations that would allow sheath 14 to tear away from tube 20. Such exposed perforations are disadvantageous and have been known to harbor microbes and bacteria that are transferred to airway 88 of patient 78 during intubation, leading to increased patient care cost. In other embodiments, sheath 14 may be removed by sliding it over the proximal end 24 of tube 20. The sheath may also remain positioned proximal to vocal cords 62 in airway 88.
  • Sheath 14 may be formed from materials having suitable mechanical properties resistant to punctures, tears, pin holes, and chemical properties to provide for flexibility, as well as biocompatibility.
  • the materials may include polyurethane or polyurethane-based compositions having suitable mechanical and chemical properties, such as Gore-Tex (e-polytetrafluoroethylene). Other materials may be suitable that exhibit properties enabling them to be processed into sheath 14.
  • Sheath 14 material may comprise, for example, polypropylene, low-density polyethylene, polyamide, polyvinyl chloride, polyethylene teraphthalate, silicone, neoprene, or polyisoprene, Copolymer admixtures for modifying the characteristics of the sheath 14 material may also be used, including low density polyethylene and ethylene-vinylacetate copolymer, or blends of the above mentioned materials, or other suitable materials that would be readily apparent to a person having ordinary skill in the art after having read the present disclosure.
  • suitable polymeric compositions may include polymethylmethacrylate, polystyrene or vinyls (such as polyvinyl chloride and polyvinylacetate), polyacrylonitrile, polyamide (such as nylon), polycarbonate, polyesters (such as polyethylene terephthalate), polyolefins (such as polyethylenes and polypropylenes).
  • sheath 14 may be desirable to form sheath 14 from an antimicrobial material or for sheath 14 to include a microbial control layer (not shown).
  • Sheath 14 or microbial control layer may be formed from hydrophobic polymers including a hydrophilic polymer or other suitable antimicrobial materials.
  • the microbial control layer may comprise a metal, such as gold, copper, or silver that exhibits antimicrobial properties.
  • the microbial control layer may include an acrylamide polymerization solution (i.e., polyacrylamide solution) that may be polymerized and crosslinked by thermal initiation such as ultraviolet radiation. The pore size of the solution may be controlled by altering the amount of crosslinking and the percent of solids in the monomer solution.
  • the microbial control layer may be any suitable material having an appropriate pore size substantially smaller than most bacteria.
  • an appropriate pore size is less than about 5 microns or less than about 0.2 microns.
  • Pore size may be defined as the average range of diameters of pores in a material, and is typically determined by the average dimensions of the smallest particles passing through the material.
  • the microbial control layer may be applied to sheath 14 by dipping the sheath
  • sheath 14 or the microbial control layer may have reflective properties.
  • sheath 14 or the microbial control layer may comprise antimicrobial metal having sufficient reflective properties. Accordingly, in some embodiments, a medical professional may be able to detect sheath 14 in airway 88 by ultrasonography.
  • FIGs. 4-6 illustrating plain views of an exemplary protective sheath 14 and endotracheal tube assembly 10 before having the distal end 22 of tube 20 pass through the vocal cords 62 of patient 78.
  • the distal end 22 of tube 20 and protective sheath 14 are positioned through mouth 74, over tongue 70, and into airway 88 of patient 78.
  • sheath 14 may be positioned to protect the distal end 22 of tube 20.
  • the medical professional may use various devices (not shown) to improve the line of sight and to help insure that the distal end 22 of tube 20 does not enter esophagus 68.
  • Such devices may include, for example, laryngoscopes, flexible fiberoptic bronchoscopes, or video laryngoscopes.
  • FIG. 5 shows a partial plain view of sheath 14 and endotracheal tube assembly
  • Sheath 14 is sized and configured to slide along tube 20 as the distal end 22 of tube 20 enters trachea 66.
  • tapered portion 25 may be sized and configured to help prevent sheath 14 from passing through vocal cords 62 or surrounding supraglottic area 60 and entering trachea 66. As tapered portion 25 contacts vocal cords 62 or surrounding supraglottic area 60, tube 20 slides through sheath 14.
  • sheath 14 may comprise a textured portion (not shown) to increase the frictional engagement between sheath 14 and airway 88— including the vocal cords 62, trachea 66, or supraglottic area 60.
  • the textured portion being configured to still allow a medical professional to easily remove sheath 14 from airway 88.
  • the textured portion may comprise closely spaced regular or random grooves forming a geometric pattern on at least a portion of sheath 14.
  • the geometric patterning may be applied to sheath 14 by chemical etching, mechanical etching, photo-etching, and/or plasma etching.
  • the textured area may comprise less than 100% of the total surface of sheath 14.
  • the textured area may comprise less than 80% of the total surface of sheath 14.
  • the textured area may comprise less than 50% of the total surface of sheath 14.
  • the textured portion may be in combination with the tapered portion 25 or in place of the tapered portion 25.
  • the textured portion may comprise a microbial control layer, as discussed above.
  • FIG. 6 shows a partial plain view of sheath 14 after the distal end 22 of tube
  • cuff 12 and the distal end 22 of tube 20 are positioned below vocal cords 62.
  • a medical professional may inflate, or finish inflating, cuff 12 with syringe 16 by delivering a fluid, such as air, through conduit 26 operatively associated with port 28.
  • a fluid such as air
  • Cuff 12 may also act as an anchor below the vocal cords 62.
  • FIGs. 7-9 showing coronal cross-sectional views taken along portions of FIGs. 4-6 and illustrating the distal end 22 of tube 20 positioned in various sections of airway 88 and trachea 66.
  • FIG. 7 showing a coronal cross-sectional view of FIG. 4 illustrating the distal end 22 of tube 20 positioned in the supraglottic area 60 of patient 78.
  • the tapered portion 25 of sheath 14 contacts vocal cords 62 and/or supraglottic structure 60 (epiglottis 76), thereby initiating the transition of sheath 14 towards the proximal end 24 of tube 20.
  • FIG. 9 shows an inflated cuff 12 positioned below the vocal cords 62 within trachea 66 and above carina 82, as well as sheath 14 transitioning towards the proximal end 24 of tube 20.
  • cuff 12 may substantially fill the area of the trachea 66 below the vocal cords 62 to form a seal with trachea 66 to provide ventilation and oxygenation to lungs 92 through bronchi 84.
  • Trachea 66 comprises walls having cartilage rings 94 separated by softer intervening tissue 90 such as, for example, fibrous tissue, muscular fibers, glands, and mucous membranes.
  • Cartilage rings 94 may vary in number from about 15 to 20.
  • Cartilage rings 94 may be spaced about 1 to 4 millimeters apart along the trachea 66.
  • Rolling cuff 12 may be configured to conform to the walls of trachea 66 upon inflation and positioned within trachea 66 depending on the number of cartilage rings 94 and spacing between cartilage rings 94.

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Emergency Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Otolaryngology (AREA)
  • Materials For Medical Uses (AREA)

Abstract

La présente invention concerne une gaine de protection pour un ensemble canule endotrachéale avant et durant l'intubation d'un patient. Ladite gaine est pourvue d'une extrémité proximale et d'une extrémité distale, d'un diamètre interne formant une partie allongée interne, d'un diamètre externe formant une partie allongée externe, et d'une partie distale déformée, effilée et/ou texturée. Ladite canule endotrachéale est placée adjacente à la partie allongée interne de la gaine, avant et durant l'intubation d'un patient.
PCT/US2014/047775 2013-07-25 2014-07-23 Gaine de canule trachéale Ceased WO2015013383A1 (fr)

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US201361858328P 2013-07-25 2013-07-25
US61/858,328 2013-07-25

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110538368A (zh) * 2019-09-09 2019-12-06 李珊娜 一种气管插管
CN119015556A (zh) * 2024-08-21 2024-11-26 首都医科大学 呼吸机相关性肺炎防护用气管插管组件

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4655214A (en) * 1984-06-28 1987-04-07 Linder Gerald S Inflatable introducer for aiding the intubation of catheters and endotracheal tubes
US5065755A (en) * 1989-11-29 1991-11-19 Klafta Jerome M Protective sheath for cuff or single or double lumen endotracheal tube
US20080142016A1 (en) * 2006-09-29 2008-06-19 Nellcor Puritan Bennett Incorporated Endotracheal cuff and technique for using the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4655214A (en) * 1984-06-28 1987-04-07 Linder Gerald S Inflatable introducer for aiding the intubation of catheters and endotracheal tubes
US5065755A (en) * 1989-11-29 1991-11-19 Klafta Jerome M Protective sheath for cuff or single or double lumen endotracheal tube
US20080142016A1 (en) * 2006-09-29 2008-06-19 Nellcor Puritan Bennett Incorporated Endotracheal cuff and technique for using the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110538368A (zh) * 2019-09-09 2019-12-06 李珊娜 一种气管插管
CN119015556A (zh) * 2024-08-21 2024-11-26 首都医科大学 呼吸机相关性肺炎防护用气管插管组件

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