US20090133701A1 - Laryngeal mask airway device - Google Patents

Laryngeal mask airway device Download PDF

Info

Publication number
US20090133701A1
US20090133701A1 US11915563 US91556306A US2009133701A1 US 20090133701 A1 US20090133701 A1 US 20090133701A1 US 11915563 US11915563 US 11915563 US 91556306 A US91556306 A US 91556306A US 2009133701 A1 US2009133701 A1 US 2009133701A1
Authority
US
Grant status
Application
Patent type
Prior art keywords
device according
support
tube
airway
outlet
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.)
Abandoned
Application number
US11915563
Inventor
Archibald I. J. Brain
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.)
Laryngeal Mask Co Ltd
Original Assignee
Laryngeal Mask Co Ltd
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

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04Tracheal tubes
    • A61M16/0434Cuffs
    • A61M16/045Cuffs with cuffs partially or completely inflated by the respiratory gas
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04Tracheal tubes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04Tracheal tubes
    • A61M16/0402Special features for tracheal tubes not otherwise provided for
    • A61M16/0409Special features for tracheal tubes not otherwise provided for with mean for closing the oesophagus
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04Tracheal tubes
    • A61M16/0402Special features for tracheal tubes not otherwise provided for
    • A61M16/0415Special features for tracheal tubes not otherwise provided for with access means to the stomach
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04Tracheal tubes
    • A61M16/0434Cuffs
    • A61M16/0443Special cuff-wall materials
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04Tracheal tubes
    • A61M16/0434Cuffs
    • A61M16/0445Special cuff forms, e.g. undulated
    • A61M16/0447Bell, canopy or umbrella shaped
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04Tracheal tubes
    • A61M16/0463Tracheal tubes combined with suction tubes, catheters or the like; Outside connections
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816Joints or connectors
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0875Connecting tubes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04Tracheal tubes
    • A61M16/0488Mouthpieces; Means for guiding, securing or introducing the tubes
    • A61M16/049Mouthpieces
    • A61M16/0493Mouthpieces with means for protecting the tube from damage caused by the patient's teeth, e.g. bite block

Abstract

The invention relates to a laryngeal mask airway device (1) for insertion into patient to provide an airway passage to the patient's glottic opening, the device (1) comprising an airway tube (2), a mask (3) attached to the airway tube (2), the mask (3) comprising a body (4) having a distal end (5) and a proximal end (6), a peripheral inflatable cuff (7), and an outlet (8), the mask (3) being attached to the airway tube (2) for gaseous communication between the tube (2) and the outlet (8), the device (1) further comprising means to prevent occlusion of the outlet (8) by the patient's anatomy, the means comprising a support (11), and a conduit (28 a) to allow gas to flow out of the outlet (8), past the support.

Description

  • The present invention relates to a laryngeal mask airway device.
  • The laryngeal mask airway device is a well known device that is useful for establishing airways in unconscious patients. U.S. Pat. No. 4,509,514 is one of the many publications that describe laryngeal mask airway devices. Such devices have been in use for many years and offer an alternative to the older, even better known endotracheal tube. For at least seventy years, endotracheal tubes comprising a long slender tube with an inflatable balloon disposed at the tube's distal end have been used for establishing airways in unconscious patients. In operation, the endotracheal tube's distal end is inserted through the mouth of the patient, past the patient's trachea. Once so positioned, the balloon is inflated so as to form a seal with the interior lining of the trachea. After this seal is established, positive pressure may be applied to the tube's proximal end to ventilate the patient's lungs. Also, the seal between the balloon and the inner lining of the trachea protects the lungs from aspiration (e.g., the seal prevents material regurgitated from the stomach from being aspirated into the patient's lungs).
  • Although they have been enormously successful, endotracheal tubes suffer from several major disadvantages. The principal disadvantage of the endotracheal tube relates to the difficulty of properly inserting the tube. Inserting an endotracheal tube into a patient is a procedure that requires a high degree of skill. Also, even for skilled practitioners, insertion of an endotracheal tube is sometimes difficult or not possible. In many instances, the difficulty of inserting endotracheal tubes has tragically led to the death of a patient because it was not possible to establish an airway in the patient with sufficient rapidity. Also, inserting an endotracheal tube normally requires manipulation of the patient's head and neck and further requires the patient's jaw to be forcibly opened widely. These necessary manipulations make it difficult, or undesirable, to insert an endotracheal tube into a patient who may be suffering from a neck injury.
  • In contrast to the endotracheal tube, it is relatively easy to insert a laryngeal mask airway device into a patient and thereby establish an airway. Also, the laryngeal mask airway device is a “forgiving” device in that even if it is inserted improperly, it still tends to establish an airway. Accordingly, the laryngeal mask airway device is often thought of as a “life saving” device. Also, the laryngeal mask airway device may be inserted with only relatively minor manipulation of the patient's head, neck and jaw. Further, the laryngeal mask airway device provides ventilation of the patient's lungs without requiring contact with the sensitive inner lining of the trachea and the size of the airway established is typically significantly larger than the size of the airway established with an endotracheal tube. Also, the laryngeal mask airway device does not interfere with coughing to the same extent as endotracheal tubes. Largely due to these advantages, the laryngeal mask airway device has enjoyed increasing popularity in recent years.
  • U.S. Pat. Nos. 5,303,697 and 6,079,409 describe examples of prior art devices that may be referred to as “intubating laryngeal mask airway devices.” The intubating device has the added advantage that it is useful for facilitating insertion of an endotracheal tube. After an intubating laryngeal mask airway device has been located in the patient, the device can act as a guide for a subsequently inserted endotracheal tube. Use of the laryngeal mask airway device in this fashion facilitates what is commonly known as “blind insertion” of the endotracheal tube. Only minor movements of the patient's head, neck and jaw are required to insert the intubating laryngeal mask airway device, and once the device has been located in the patient, the endotracheal tube may be inserted with virtually no additional movements of the patient. This stands in contrast to the relatively large motions of the patient's head, neck and jaw that would be required if the endotracheal tube were inserted without the assistance of the intubating laryngeal mask airway device. Furthermore, these devices permit single-handed insertion from any user position without moving the head and neck of the patient from a neutral position, and can also be put in place without inserting fingers in the patient's mouth. Finally, it is believed that they are unique in being devices which are airway devices in their own right, enabling ventilatory control and patient oxygenation to be continuous during intubation attempts, thereby lessening the likelihood of desaturation.
  • Artificial airway devices of the character indicated, are exemplified by the disclosures of U.S. Pat. No. 4,509,514; U.S. Pat. No. 5,249,571; U.S. Pat. No. 5,282,464; U.S. Pat. No. 5,297,547; U.S. Pat. No. 5,303,697; and by the disclosure of the UK Patent 2,205,499. Such devices with additional provision for gastric-discharge drainage are exemplified by U.S. Pat. No. 4,995,388 (FIGS. 7 to 10); U.S. Pat. No. 5,241,956; and U.S. Pat. No. 5,355,879.
  • In general, laryngeal mask airway devices aim to provide an airway tube of such cross-section as to assure more than ample ventilation of the lungs, and the designs with provision for gastric drainage have been characterized by relatively complex internal connections and cross-sections calculated to serve in difficult situations where substantial solids could be present in a gastric discharge. As a result, the provision of a gastric discharge opening at the distal end of the mask applicable for direct service of the hypopharynx has resulted in a tendency for such masks to become bulky and unduly stiff, thus making for difficulty in properly inserting the mask. Moreover, undue bulk and stiffness run contrary to the requirement for distal flexibility for tracking the posterior curvature of the patient's throat on insertion, in such manner as to reliably avoid traumatic encounter with the epiglottis and other natural structures of the pharynx.
  • A number of problems have been experienced with all of these prior types of device. For example, some prior devices seek to prevent occlusion of the airway outlet by parts of the patient's anatomy, such as the epiglottis, by the provision of bars and the like across the outlet. Although such devices function well in most cases, they can make manufacturing more complex, and can affect the performance of devices in use. This is especially so in devices formed from relatively rigid materials, like PVC, as opposed to the more traditional Liquid Silicon Rubber (LSR).
  • In general, devices formed from materials such as PVC are attractive because they are cheaper to make, and can be offered economically as “single-use” devices. However, there are material differences in PVC and PVC adhesives, such as increased durometer hardness as compared to LSR, which affect how the devices perform in use. For example, it has been observed that for a given volume of air, an LSR cuff will expand to a larger size than a comparable PVC cuff. This superior elasticity allows the LSR cuff to provide an anatomically superior seal with reduced mucosal pressure. To close the performance gap, the PVC cuff must be of reduced wall thickness. However, a PVC cuff of reduced wall thickness, deflated and prepared for insertion, will suffer from poor flexural response as the transfer of insertion force through the airway tube to cuff distal tip cannot be adequately absorbed. The cuff assembly must deflate to a thickness that preserves flexural performance i.e. resists epiglottic downfolding, but inflate so that a cuff wall thickness of less than or equal to 0.4 mm creates a satisfactory seal. And where mask backplates are formed from PVC, as well as cuffs, the fact that the increased durometer hardness of PVC is inversely proportional to flexural performance (hysterisis) means that the flexural performance of the device in terms of reaction, response and recovery on deformation is inferior to a comparable LSR device.
  • The above described problems are particularly acute in devices which incorporate an oesophageal drain. As mentioned above, in any such device regardless of the material from which it is formed, adding an oesophageal drain in itself adds greatly to complexity of manufacture and can also affect the performance of devices, in terms of ease of insertion, seal formation and prevention of insufflation. These problems can be exacerbated still further if PVC or similarly performing materials are used. For example, the skilled worker will appreciate that in terms of manufacture, the need to provide a drain tube which is sealed from the airway, and which must pass through the inflatable cuff poses a particularly difficult problem. In terms of effects on functionality, the provision of a drain tube can cause unacceptable stiffening of the mask tip area and occlusion/restriction of the airway passage.
  • According to the invention there is provided a laryngeal mask airway device for insertion into a patient to provide an airway passage to the patient's glottic opening, the device comprising an airway tube, a mask attached to the airway tube, the mask comprising a body having a distal end and a proximal end, a peripheral inflatable cuff, and defining an outlet for gas, the mask being connected to the airway tube for gaseous communication between the tube and the mask, the device further comprising means to prevent occlusion of the outlet by the patient's anatomy, the means comprising a support, and a conduit to allow gas to flow out of the outlet past the support.
  • It is preferred that the outlet includes a floor, the support being disposed to support an occluding anatomical structure above the level of the floor, to allow gas to flow therebelow.
  • The body may have dorsal and ventral sides, the support surface being disposed on the ventral side, in front of the outlet in the path of gas flow.
  • The support surface may be integrally formed in the material of the body.
  • In one preferred embodiment, the support surface is provided upon a substantially centrally disposed, longitudinal upstand, extending from in front of the outlet towards the distal end, which raises the support surface above the level of the ventral side.
  • The conduit may including a floor, the floor being defined by a part of the ventral side of the body. It is preferred that the conduit is defined by side walls, at least one side wall being defined by a part of the support. The conduit may have a substantially circular cross-section.
  • The side walls may including laterally extending webs, to partially close over the conduit. The webs may include upper surfaces disposed at the same level as the support, to prevent entry of an occluding structure into the conduit.
  • According to an alternative embodiment, there may be a plurality of conduits, in particular, two conduits, the conduits being disposed either side of the support.
  • According to one particularly preferred embodiment the support is an outer surface of an oesophageal drain tube. The drain tube may be formed integrally in the material of the body and may extend substantially centrally along the ventral side of the body, from the outlet to the tip.
  • The invention will further be described by way of example and with reference to the following drawings, in which,
  • FIG. 1 is a dorsal three quarter perspective view of apparatus according to the invention;
  • FIG. 2 is a right side view of the apparatus of FIG. 1;
  • FIG. 3 is a dorsal view of the apparatus of FIG. 1;
  • FIG. 4 is a ventral view of the apparatus of FIG. 1;
  • FIG. 5 is an end view, looking from the proximal towards the distal end of the mask of the device of FIG. 1;
  • FIG. 6 is an end view, looking from the distal towards the proximal end of the mask of the device of FIG. 1;
  • FIG. 7 is an enlarged view of the mask of the device of FIG. 1;
  • FIG. 8 is a dorsal view of a device according to the invention;
  • FIG. 9 is a longitudinal sectional view along line Y-Y in FIG. 8;
  • FIG. 10 is a side view, enlarged, of the device of FIG. 8;
  • FIGS. 11A to 11K are transverse sectional views along lines A-A to K-K in FIG. 10;
  • FIG. 12 is an exploded dorsal perspective view of the device of FIG. 8;
  • FIG. 13 is an exploded ventral perspective view of the device of FIG. 8;
  • FIG. 14 is a dorsal three quarter perspective view of apparatus according to the invention;
  • FIG. 15 is a right side view of the apparatus of FIG. 14;
  • FIG. 16 is a dorsal view of the apparatus of FIG. 14;
  • FIG. 17 is a ventral view of the apparatus of FIG. 14;
  • FIG. 18 is an end view, looking from the proximal towards the distal end of the mask of the device of FIG. 14;
  • FIG. 19 is an end view, looking from the distal towards the proximal end of the mask of the device of FIG. 14;
  • FIG. 20 is a dorsal three quarter perspective view of the device of FIG. 14;
  • FIG. 21 is a view of section CC-CC in FIG. 20;
  • FIG. 22 is a view of section VC-VC in FIG. 17;
  • FIG. 23 is a proximal end view of a part of the device of FIG. 14; and
  • FIG. 24 is a distal end view of a part of the device of FIG. 14.
  • Referring now to the drawings, there is illustrated a laryngeal mask airway device 1 for insertion into a patient to provide an airway passage to the patient's glottic opening, the device 1 comprising an airway tube 2, a mask 3 attached to the airway tube 2, the mask 3 comprising a body 4 having a distal end 5 and a proximal end 6, a peripheral inflatable cuff 7, and an outlet 8, the mask 3 being attached to the airway tube 2 for gaseous communication between the tube 2 and the outlet 8, the device 1 further comprising means to prevent occlusion of the outlet 8 by the patient's anatomy, the means comprising a support 11, and a conduit 28 a to allow gas to flow out of the outlet 8, past the support.
  • As can be seen from the drawings, the device 1, in terms of overall appearance is somewhat similar to prior art devices, in that it consists of the basic parts which make up most if not all laryngeal mask airway devices, i.e. an airway tube 2 and mask 3 which includes a body part 4, and a cuff 7.
  • For the purposes of description it is appropriate to assign reference names to areas of the device 1 and accordingly with reference to FIGS. 2 to 6, the device 1 has a dorsal side 14, a ventral side 15, a proximal end 16 (in a sense that this is the end nearest the user rather than the patient) a distal end 17 and right and left sides 18 and 19.
  • Referring firstly to the airway tube 2, in the illustrated embodiment the tube comprises a relatively rigid PVC material such as a shore 90A Colorite PVC moulded into an appropriately anatomically curved shape. The tube 2 has some flexibility such that if it is bent it will return to its original shape. Although it is resiliently deformable in this way, it is sufficiently rigid to enable it to assist in insertion of the device 1 into a patient, acting as a handle and guide. In this embodiment the airway tube 2 does not have a circular cross-section as in many prior devices, but instead is compressed in the dorsal/ventral direction which assists in correct insertion of the device 1, helps prevent kinking, and assists in comfortable positioning for the patient as the shape generally mimics the shape of the natural airway. In this embodiment each side 18, 19 of the airway tube 2 includes a groove or channel 20 extending for most of the tube's length from the proximal to distal ends. These grooves 20 further assist in preventing crushing or kinking of the airway tube 2. Internally the grooves 20 form ridges along the inner surfaces of the sides 18 and 19.
  • Referring now to FIG. 13, which shows an exploded view of the device 1, it can be seen that the airway tube 2 includes a flared distal end 22 with surfaces 22 a disposed to allow for attachment of the mask 3 by over moulding of the mask 3 onto the airway tube. Thus, the airway tube 2 itself forms a pre-mould used in formation of the device 1, which substantially simplifies manufacturing. Of particular note is the airway tube's dorsal mould surface 23 (FIG. 13). This surface 23 is located at the flared distal end 22, and takes the form of a flat land extending between the outer dorsal surface 2 a and the inner dorsal surface 2 b of the dorsal wall 2 c. It includes optional through holes 2 d to allow the over moulded back plate 4 to lock onto the tube 2, as will be described later on. This feature helps ensure a secure connection between the different materials making up the airway tube 2 and mask 3.
  • A further feature of the airway 2 is the oesophageal drain tube 41. This drain tube 41 is located within airway tube 2, extending centrally through it from one end to the other, and in this embodiment it is disposed in contact with the inner surface 2 a of the dorsal wall 2 b of the airway tube 2, and bounded on each side by raised, smooth walls 2 c which form a shallow channel through which it runs.
  • The proximal end of the airway tube 2 is provided with a connector 42, as shown for example in FIGS. 12 and 13 and in section in FIG. 9. The connector 42 comprises a connector body 43, an optional bite block 44 and a connector plug 45. The connector body 43 and bite block 44 correspond in shape and dimension with the internal shape of the proximal end of the airway tube 2 such that they fit inside it. The connector body 43 has a perpendicularly extending peripheral flange 46 which extends at one point on its circumference into a tab 47. Connector plug 45 attaches to connector body 43 by adhesive or other suitable means applied to flange 46. The connector plug 45 comprises major and minor bores 48, 49 which both lead into a common atrium 50 at the distal end of the connector plug 45 where it attaches to the connector body 43. Drain tube 41 extends into and through minor bore 49, such that the bore of the airway tube 2 and the bore of the drain tube 41 are separated from one another.
  • Turning now to the mask 3, the mask 3 consists of two parts, a body part 4 often referred to as a back plate, and a peripheral cuff 7.
  • The back plate 4 is formed in this embodiment by moulding from a shore 50A Vythene PVC+PU. This material is substantially softer and more deformable than the material of airway tube 2.
  • Referring now to FIG. 23, the back plate 4 comprises a generally oval moulding when viewed from the dorsal or ventral directions, having a smooth dorsal surface 24, a formed ventral surface 24 a (FIG. 17), a proximal joining portion 24 b, and a distal tip 61.
  • The dorsal surface 24 has a convex curvature from one side to the other, corresponding to the curvature of the dorsal surface of the airway tube 2, and longitudinally, the dorsal surface 24 is also curved, having a curvature beginning at the joining portion 24 b and extending with constant rate of curvature toward the distal tip 61. As a result the tip 61 is ventrally biased relative to the distal end of the airway tube, in the assembled device 1, the extent of displacement of the distal tip 61 being approximately 20 mm or 10 degrees, in order to produce a curvature in the mask that is suited to the anatomy of the patient. On insertion, this displacement of the tip 61 assists the mask in “turning the corner” in the insertion path.
  • When viewed from the ventral side, the integrally moulded structures of the back plate 4 can best be seen (FIGS. 4,7,12,17). The precise shape of the ventral side 24 a of the back plate is illustrated particularly in the sectional views shown in FIGS. 11A to 11K and in the enlarged perspective view in FIG. 7. Referring to the exploded view shown in FIG. 12, the convex curvature of the dorsal surface 24 of the back plate 4 is mirrored in a corresponding concave curvature on the ventral side. Thus, the ventral surface 24 a forms a shallow, elongate channel tapering towards the distal tip 61. The channel has walls 26 and a floor 26 a.
  • The walls 26 of the channel have correspondingly shaped, longitudinally extending convex outer surfaces 25. Each wall 26 extends longitudinally substantially the entire length of the back plate 4 from the proximal joining portion 24 b towards the distal tip 61. Each wall 26 also has a convex inner surface 28, but rather than terminating at an angle normal to the channel floor, the curve of each wall 26 is continued, the walls curving back over the channel and terminating in inwardly extending webs 27 (See FIG. 7). The inner surfaces 28 of the side walls 26 curve down to form the floor of the channel but do not meet, because the base or floor of the channel is bisected by a longitudinally extending, integrally moulded conduit which is an oesophageal drain tube 11 extending along it for its entire length from joining portion 24 b to distal tip 61. Thus, it can be seen that the channel has three longitudinally extending conduits on its inner surface, the two open outer conduits 28 a which are minor gas conduits in the assembled device 1, and the central drain tube 11, which forms a septum there between.
  • Referring now in greater detail to the drain tube 11, it will be seen that the tube 11 has a sufficient diameter such that its upper wall section 11 a, i.e. the wall section furthest from the floor of the channel, is on a similar level with the inwardly extending webs 27 of the side walls 26. Furthermore, the upper wall section 11 a itself also has outwardly extending webs 30, which taper toward, but do not meet, the correspondingly tapered edges of the webs 27. Thus, the upper surface 11 b of the upper wall section 11 a of the drain tube 11, and the webs 27, 30, together define a surface 11 c, below the level of which run all three conduits 11, 28 a.
  • Referring now particularly to FIG. 9, it can be seen that although the drain tube 11 extends the full length of the back plate 4 from its proximal joining portion 24 b to distal tip 61, the conduits 28 a do not extend the full length of the back plate 4, but instead terminate about half way along its length. The floors 31 of the conduits 28 a curve gently upwards as they extend towards the distal tip 61 of the back plate 4 until they terminate at a level approximately equal to the level of the webs 27 and 30.
  • As illustrated in FIG. 12 and FIGS. 21 and 22, drain tube 11 extends to distal tip 61, terminating in an opening 12. Thus, an end section 11 e of the drain tube 11 protrudes past the end of back plate 4. This end section 11 e is provided with dorsal webbing 11 a which extends to either side of it, and around it to form a hood or pocket 36 a which encloses the end section 11 e around its circumference. The hood or pocket 36 a is attached to the distal end of the drain tube 11 around the circumference of opening 12. This hood or pocket 36 a is integrally formed in the material of the back plate 4 at distal tip 61. It completely surrounds and extends from the circumference of the drain tube opening 12 and the joint therebetween is smooth. As illustrated, the ventral extent of the hood is more limited than the dorsal extent, the dorsal extent being to about midway back towards the proximal end of the back plate 4. Referring to sectional view A-A in FIG. 11, it can be seen that the drain tube 11 is supported on its right and left sides, and on its dorsal surface, by perpendicularly extending webs 62. These webs 62 are integrally formed, and extend back from the opening 12 to the point where the end section 11 e meets the extent of the back plate 4. In the illustrated embodiment the dorsal web extends substantially perpendicularly from the drain tube, but in a preferred embodiment, it extends to one side or the other, at an angle of less than 90 degrees.
  • The second part of the mask 3 is the peripheral cuff 7. The cuff 7 is in this embodiment blow moulded PVC and takes the form of a generally elliptical inflatable ring having a central aperture 7 a, a relatively deeper proximal end 37 with an inflation port 38 and a relatively shallower distal end 7 b tapering to a “wedge” profile. As will be appreciated, particularly from the exploded views shown in FIGS. 12 and 13, the cuff 7 is integrally formed in one piece. The wedge profile is provided such that the ratio of dorsal to ventral side surface areas favours the dorsal side. Thus, when deflated the distal end 7 b of the cuff 7 will curl with bias from dorsal to ventral side.
  • In the assembled device 1, drain tube 41 is inserted into airway tube 2, such that it protrudes from proximal end 16. The connector 42 is attached to the airway tube 2 by inserting the connector body 43 and bite block 44 into proximal end 16. The parts are an interference fit and can be secured by adhesive. Plug 45 is attached to connector body 43 via flange 46, such that drain tube 41 passes into minor bore 49, terminating at or adjacent its mouth. Thus it will be seen that the minor bore 49 is solely in fluid communication with drain tube 41, and the major bore 48 is solely in fluid communication with the interior of airway tube 2.
  • Airway tube 2 is attached to the back plate 4 conveniently by overmoulding the back plate 4 onto the already formed tube 2. Thus, the joining portion 24 b of the back plate 4 is moulded onto the dorsal arc of the airway tube 2. Secure attachment is facilitated by the surfaces 22 a, 23 which provide an increased surface area onto which the moulding occurs, and through-holes 2 d, into which back plate material can flow. Drain tube 41 is connected in fluid tight manner to integrally moulded drain 11.
  • The cuff 7 is bonded to the back plate 4 as illustrated in FIGS. 12 and 13 by inserting the wedge shaped distal end 7 b of the cuff 7 into the hood or pocket 36 a at the distal tip 61 of the back plate 4 such that the wedge surface 39 mates with the inner surface 36 b of the hood 36 a, and sections of the inner periphery of the cuff 7 mate with convex outer surfaces 25 of back plate walls 26. The cuff 7 is bonded into the hood such that the space between the hood and the cuff is airtight and in this embodiment the cuff is provided with a “pinch off” 40 (FIG. 21) putting the cuff 7 and hood 36 a into fluid communication so that the air space in the hood can also be inflated, in addition to the cuff 7 itself. However the cuff 7 pinch off does not extend the entire distance towards the distal tip of the cuff to prevent the pressure of inflation occluding the opening 12. The proximal dorsal surface of the cuff is bonded to the ventral arc of the distal end 22 of the airway tube 2. Thus, it will be appreciated that unlike in previous devices incorporating oesophageal drains, in the invention the drain 11 does not pierce the cuff 7, making manufacturing simpler. Furthermore, in prior devices in which the drain pierces the cuff, the cuff must be securely attached around the circumference of the drain tube at the distal tip. Such a secure attachment, for example with adhesive, can make the tip hard, and prevent the drain tube collapsing in the deflated, flattened device, which is highly desirable to enable the mask to pass easily around the curvature of the anatomy. In addition, the acute curvature of a drain tube to cuff joint would be highly susceptible to cracking. In the invention, these problems are avoided because the drain tube 11 is integrally moulded with the hood 36 a, which in effect forms a second or minor cuff at the distal tip.
  • As will be appreciated, the airway of the device 1, which is the conduit through which gas is passed to the patient, is provided by the bore 2 a of airway tube 2, which terminates at flared distal end 22. Flared distal end 22 defines, along with back plate 4 and cuff 7, an outlet for gas which includes three routes by which gas may pass, namely a main gas conduit 28 b, and two minor gas conduits 28 a.
  • In use, the deflated device 1 is inserted into a patient in the usual manner with devices of this type. As noted above, the relative rigidity of the airway tube 2 allows a user to grip it and use it to guide the device 1 into the patient, whilst the relatively softer, more compliant material of the back plate means that the mask will more readily deform to negotiate the insertion path without causing damage to the anatomy, and will return to its optimum shape to ensure that a good seal is achieved at the furthest extent of insertion. The ventral displacement of the distal tip 61 relative to the join between the back plate 4 and airway tube 2 further enhances ease of insertion, because the distal tip 61 is thereby presented at the optimum angle to negotiate the “bend” in the insertion path. In devices formed from relatively rigid materials such as PVC, as opposed to the often used LSR these features are particularly important in easing insertion and providing for an enhanced seal.
  • Referring now to the features of the moulded back plate 4, it will be seen that by providing a drain tube integrally moulded in the material of the back plate 4, problems of stiffness and difficulty of manufacture in prior designs caused by the presence of a separate drain tube bonded in place with adhesive can be mitigated.
  • Moreover, with the back plate of the invention, the combination of the centrally located drain tube 11 and minor gas conduits 28 a assist in solving the problem of occlusion of the airway by parts of the patient's anatomy. The minor gas conduits 28 a can be thought of as “nostrils” through which gas may continue to pass into the patient even if the main outlet 28 b becomes occluded by, for example the patient's epiglottis, as the epiglottis will rest upon the septum. As illustrated particularly in FIGS. 11I and 11J the webs 27, 30 form a partial closure over the conduits 28 a, to assist in preventing structures such as the epiglottis from falling into and blocking the conduits 28 a, and also to make the back plate 4 more resistant to lateral compression. It will be appreciated that in this embodiment, the drain 11 forms a convenient septum between the conduits 28 a, however, in devices with no oesophageal drain, a solid septum could simply be formed in the material of the back plate by moulding. In addition, a larger number of conduits 28 a could be provided.

Claims (16)

  1. 1. A laryngeal mask airway device for insertion into a patient to provide an airway passage to the patient's glottic opening, the device comprising an airway tube, a mask attached to the airway tube, the mask comprising a body having a distal end and a proximal end, a peripheral inflatable cuff, and defining an outlet for gas, the mask being connected to the airway tube for gaseous communication between the tube and the mask, the device further comprising means to prevent occlusion of the outlet by the patient's anatomy, the means comprising a support, the support defining a support surface, and a conduit to allow gas to flow out of the outlet past the support.
  2. 2. A device according to claim 1, the outlet including a floor, the support being disposed to support an occluding anatomical structure above the level of the floor, to allow gas to flow therebelow.
  3. 3. A device according to claim 1, the body having dorsal and ventral sides, the support surface being disposed on the ventral side, in front of the outlet in the path of gas flow.
  4. 4. A device according to claim 1, wherein the support surface is integrally formed in the material of the body.
  5. 5. A device according to claim 1, wherein the support surface is provided upon a substantially centrally disposed, longitudinal upstand, extending from in front of the outlet towards the distal end, which raises the support surface above the level of the ventral side.
  6. 6. A device according to claim 1, the conduit including a floor, the floor being defined by a part of the ventral side of the body.
  7. 7. A device according to claim 1, the conduit being defined by side walls, at least one side wall being defined by a part of the support.
  8. 8. A device according to claim 1, the conduit having a substantially circular cross-section.
  9. 9. A device according to claim 7, the side walls including laterally extending webs, to partially close over the conduit.
  10. 10. A device according to claim 9, the webs including upper surfaces disposed at the same level as the support, to prevent entry of an occluding structure into the conduit.
  11. 11. A device according to claim 1, including a plurality of conduits.
  12. 12. A device according to claim 11, there being two conduits, the conduits being disposed either side of the support.
  13. 13. A device according to claim 1, the support being an outer surface of an oesophageal drain tube.
  14. 14. A device according to claim 13, the drain tube being formed integrally in the material of the body.
  15. 15. A device according to claim 14, the drain tube extending substantially centrally along the ventral side of the body, from the outlet to the tip.
  16. 16. A device according to claim 8, the side walls including laterally extending webs, to partially close over the conduit.
US11915563 2005-05-27 2006-05-24 Laryngeal mask airway device Abandoned US20090133701A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB0510951.7 2005-05-27
GB0510951A GB0510951D0 (en) 2005-05-27 2005-05-27 Laryngeal mask airway device
PCT/GB2006/001915 WO2006125990A1 (en) 2005-05-27 2006-05-24 Laryngeal mask airway device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2006/001915 A-371-Of-International WO2006125990A1 (en) 2005-05-27 2006-05-24 Laryngeal mask airway device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13397468 Continuation US8783256B2 (en) 2005-05-27 2012-02-15 Laryngeal mask airway device

Publications (1)

Publication Number Publication Date
US20090133701A1 true true US20090133701A1 (en) 2009-05-28

Family

ID=34834809

Family Applications (9)

Application Number Title Priority Date Filing Date
US11915556 Abandoned US20090145438A1 (en) 2005-05-27 2006-05-24 Laryngeal mask airway device
US11915563 Abandoned US20090133701A1 (en) 2005-05-27 2006-05-24 Laryngeal mask airway device
US11915558 Active 2030-03-05 US9522245B2 (en) 2005-05-27 2006-05-24 Laryngeal mask airway device and method of manufacture
US11915557 Abandoned US20080308109A1 (en) 2005-05-27 2006-05-24 Laryngeal Mask Airway Device
US13267421 Active US8776797B2 (en) 2005-05-27 2011-10-06 Laryngeal mask airway device
US13397468 Active US8783256B2 (en) 2005-05-27 2012-02-15 Laryngeal mask airway device
US13397305 Abandoned US20120145160A1 (en) 2005-05-27 2012-02-15 Laryngeal mask airway device
US14298310 Active US9662465B2 (en) 2005-05-27 2014-06-06 Laryngeal mask airway device
US14314247 Active US9498591B2 (en) 2005-05-27 2014-06-25 Laryngeal mask airway device with a support for preventing occlusion

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US11915556 Abandoned US20090145438A1 (en) 2005-05-27 2006-05-24 Laryngeal mask airway device

Family Applications After (7)

Application Number Title Priority Date Filing Date
US11915558 Active 2030-03-05 US9522245B2 (en) 2005-05-27 2006-05-24 Laryngeal mask airway device and method of manufacture
US11915557 Abandoned US20080308109A1 (en) 2005-05-27 2006-05-24 Laryngeal Mask Airway Device
US13267421 Active US8776797B2 (en) 2005-05-27 2011-10-06 Laryngeal mask airway device
US13397468 Active US8783256B2 (en) 2005-05-27 2012-02-15 Laryngeal mask airway device
US13397305 Abandoned US20120145160A1 (en) 2005-05-27 2012-02-15 Laryngeal mask airway device
US14298310 Active US9662465B2 (en) 2005-05-27 2014-06-06 Laryngeal mask airway device
US14314247 Active US9498591B2 (en) 2005-05-27 2014-06-25 Laryngeal mask airway device with a support for preventing occlusion

Country Status (11)

Country Link
US (9) US20090145438A1 (en)
EP (5) EP2377568B1 (en)
JP (7) JP5089579B2 (en)
KR (4) KR20080015461A (en)
CN (6) CN104248792B (en)
CA (4) CA2609471C (en)
DE (2) DE202006021004U1 (en)
ES (2) ES2592912T3 (en)
GB (1) GB0510951D0 (en)
RU (4) RU2406544C2 (en)
WO (4) WO2006125986A1 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090145438A1 (en) * 2005-05-27 2009-06-11 The Laryngeal Mask Company Ltd. Laryngeal mask airway device
US20100313893A1 (en) * 2007-10-30 2010-12-16 The Laryngeal Mask Company, Ltd. Laryngeal mask with tape tab
US8335992B2 (en) 2009-12-04 2012-12-18 Nellcor Puritan Bennett Llc Visual indication of settings changes on a ventilator graphical user interface
US8443294B2 (en) 2009-12-18 2013-05-14 Covidien Lp Visual indication of alarms on a ventilator graphical user interface
US8453645B2 (en) 2006-09-26 2013-06-04 Covidien Lp Three-dimensional waveform display for a breathing assistance system
US8555882B2 (en) 1997-03-14 2013-10-15 Covidien Lp Ventilator breath display and graphic user interface
US8597198B2 (en) 2006-04-21 2013-12-03 Covidien Lp Work of breathing display for a ventilation system
US8924878B2 (en) 2009-12-04 2014-12-30 Covidien Lp Display and access to settings on a ventilator graphical user interface
US9119925B2 (en) 2009-12-04 2015-09-01 Covidien Lp Quick initiation of respiratory support via a ventilator user interface
US9262588B2 (en) 2009-12-18 2016-02-16 Covidien Lp Display of respiratory data graphs on a ventilator graphical user interface
US9265904B2 (en) 2009-07-06 2016-02-23 Teleflex Life Sciences Artificial airway
US9675772B2 (en) 2010-10-15 2017-06-13 The Laryngeal Mask Company Limited Artificial airway device
US9950129B2 (en) 2014-10-27 2018-04-24 Covidien Lp Ventilation triggering using change-point detection
US9974912B2 (en) 2010-10-01 2018-05-22 Teleflex Life Sciences Unlimited Company Artificial airway device

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4963959B2 (en) 2003-08-14 2012-06-27 ナジール,ムハマド,アスラム Improved airway device
GB0218868D0 (en) 2002-08-14 2002-09-25 Nasir Muhammed A Improved airway management device
US9084912B2 (en) * 2005-10-19 2015-07-21 Performance Health Systems, Llc Systems and methods for administering an exercise program
GB0821291D0 (en) * 2008-11-21 2008-12-31 Nasir Muhammed A Improved airway device
EP2349426B1 (en) * 2008-11-27 2014-09-10 Singularity AG Larynx mask having a connector
EP2349427B1 (en) 2008-11-27 2013-06-12 Deltona Innovations AG Larynx mask having an esophageal passage
WO2011017756A1 (en) 2009-08-13 2011-02-17 Ultimate Medical Pty. Ltd. Pressure indicator
EP2560719B1 (en) 2010-02-27 2018-07-04 King Systems Corporation Laryngeal tube
GB201010647D0 (en) * 2010-06-24 2010-08-11 Docsinnovent Ltd Stopper device
DK201001052A (en) * 2010-11-19 2011-11-10 Ambu As A tracheal intubation guide
USD693920S1 (en) 2011-06-08 2013-11-19 Intersurgical Ag Airway device
USD688787S1 (en) * 2011-06-08 2013-08-27 Intersurgical Ag Airway device cap and strap holder
USD712244S1 (en) 2011-09-23 2014-09-02 Intersurgical Ag Medical device package
GB201201438D0 (en) 2012-01-27 2012-03-14 Docsinnovent Ltd Improved stopper device
USD761952S1 (en) 2012-07-27 2016-07-19 Docsinnovent Limited Airway device
CN102908704A (en) * 2012-10-31 2013-02-06 南昌贝欧特医疗设备有限公司 Laryngeal Mask Airway
CN103432670B (en) * 2013-09-10 2015-06-10 广州维力医疗器械股份有限公司 Laryngeal mask breather tube device and manufacturing method thereof
KR101508131B1 (en) * 2013-09-26 2015-04-07 정민호 Airway device
GB201317596D0 (en) * 2013-10-04 2013-11-20 Teleflex Life Sciences Biteblock
FR3014258B1 (en) 2013-12-02 2017-02-17 Schneider Electric Ind Sas A fire protection of a starter-controller device for an electrical installation
GB2522403B (en) * 2013-12-17 2017-09-13 Aslam Nasir Muhammed Airway device with flexible divider
DK177742B1 (en) * 2014-01-24 2014-05-19 Ambu As A laryngeal mask with a bite absorbing connector
JP6378886B2 (en) * 2014-01-31 2018-08-22 大研医器株式会社 Laryngeal mask
WO2015119577A1 (en) * 2014-02-10 2015-08-13 Ronald Craig Wight An airway management device and method of manufactur
CA158881S (en) * 2014-03-28 2015-05-04 Teleflex Life Sciences Laryngeal mask
CN105214188B (en) * 2015-11-09 2017-07-28 汤立 Multi-lumen laryngeal mask
WO2017220226A3 (en) 2016-03-31 2018-05-17 Teleflex Life Sciences Unlimited Company Fixation device for a laryngeal mask
KR101789171B1 (en) 2016-07-13 2017-10-25 한양대학교 산학협력단 Apparatus for free airway and guiding intubation tube

Citations (95)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2839788A (en) * 1953-04-24 1958-06-24 Dembiak Matthew Method of making hollow plastic or rubber articles
US3554673A (en) * 1969-01-31 1971-01-12 Sage Instr Inc Syringe pump
US3683908A (en) * 1969-10-20 1972-08-15 Tantrimudalige Anthony Don Mic Apparatus for sealing the oesophagus and providing artificial respiration
US3794036A (en) * 1972-08-02 1974-02-26 R Carroll Pressure regulated inflatable cuff for an endotracheal or tracheostomy tube
US3931822A (en) * 1974-02-26 1976-01-13 Marici Frank N Automatic alternating cuff endo tracheal tube inflator
US4067329A (en) * 1975-01-17 1978-01-10 Union Chimique Continentale-U.C.C. Tube disconnection warning device
US4104357A (en) * 1973-01-10 1978-08-01 Monster Molding, Inc. Method of rotational molding about plural axes at low rotational speeds
US4134407A (en) * 1977-03-25 1979-01-16 Elam James O External pressure-volume monitor for endotracheal cuff
US4159722A (en) * 1977-03-28 1979-07-03 Sherwood Medical Industries, Inc. Pressure regulator for endotracheal tube cuff or the like
US4256099A (en) * 1979-03-21 1981-03-17 Dryden Gale E Two-tube resuscitation system
US4285340A (en) * 1979-03-16 1981-08-25 Gezari Walter A Apparatus for controlling the pressure in a tracheal cuff
US4446864A (en) * 1980-07-10 1984-05-08 Watson Robert L Emergency ventilation tube
US4501273A (en) * 1982-09-30 1985-02-26 Mcginnis Gerald E Endotracheal tube with pressure controlled inflatable cuff
US4510273A (en) * 1979-11-08 1985-04-09 Mitsui Petrochemical Industries, Ltd. Thixotropic agent
US4509514A (en) * 1981-12-16 1985-04-09 Brain Archibald Ian Jeremy Artificial airway device
US4526196A (en) * 1983-01-26 1985-07-02 Nayan S. Shah Gas pressure measuring and regulating device and method
US4531330A (en) * 1982-02-01 1985-07-30 Phillips William E Bed/shelter unit
US4583917A (en) * 1983-06-17 1986-04-22 Shah Nayan S Pressure regulating and monitoring device
US4689041A (en) * 1984-01-20 1987-08-25 Eliot Corday Retrograde delivery of pharmacologic and diagnostic agents via venous circulation
US4798597A (en) * 1987-04-29 1989-01-17 Sherwood Medical Co Flexible composite intubation tube
US4825862A (en) * 1986-02-14 1989-05-02 Tottori University Pressure regulator for cuff of endotracheal tube with superposition of ventilating pressure variation
US4832020A (en) * 1987-03-24 1989-05-23 Augustine Scott D Tracheal intubation guide
US4850349A (en) * 1987-12-04 1989-07-25 Farahany Amir H Endotracheal tube sealing cuff system
US4856510A (en) * 1988-04-06 1989-08-15 Kowalewski Ryszard J Tracheal tube inflator
US4924862A (en) * 1987-08-19 1990-05-15 Gary Levinson Pressure controller and leak detector for tracheal tube cuff
US4981470A (en) * 1989-06-21 1991-01-01 Synectics Medical, Inc. Intraesophageal catheter with pH sensor
US4995388A (en) * 1989-03-22 1991-02-26 Brain Archibald I Artificial airway device
US5038766A (en) * 1989-11-08 1991-08-13 Parker Jeffrey D Blind orolaryngeal and oroesophageal guiding and aiming device
US5042469A (en) * 1987-03-24 1991-08-27 Augustine Medical, Inc. Tracheal intubation guide
US5042476A (en) * 1989-08-10 1991-08-27 Smith Charles A Endotracheal tube protection arrangement
US5203320A (en) * 1987-03-24 1993-04-20 Augustine Medical, Inc. Tracheal intubation guide
US5218970A (en) * 1990-12-05 1993-06-15 Smiths Industries Public Limited Company Tracheal tube cuff pressure monitor
US5235973A (en) * 1991-05-15 1993-08-17 Gary Levinson Tracheal tube cuff inflation control and monitoring system
US5241325A (en) * 1991-10-31 1993-08-31 Hewlett-Packard Company Print cartridge cam actuator linkage
US5277178A (en) * 1991-09-14 1994-01-11 John Dingley Medico-surgical device
US5282464A (en) * 1992-07-21 1994-02-01 Brain Archibald Ian Jeremy Combined laryngeal mask and reflectance oximeter
US5297547A (en) * 1992-07-30 1994-03-29 Brain Archibald Ian Jeremy Laryngeal mask construction
US5303697A (en) * 1991-02-11 1994-04-19 Brain Archibald Ian Jeremy Artificial airway device
US5305743A (en) * 1992-03-05 1994-04-26 Brain Archibald Ian Jeremy Artificial airway device
US5311861A (en) * 1992-08-24 1994-05-17 Miller Donald M Breathing apparatus
US5331967A (en) * 1993-02-05 1994-07-26 Playa De Los Vivos S.A. Tracheal intubation monitoring apparatus and method
US5339808A (en) * 1991-04-02 1994-08-23 Don Michael T Anthony Endotracheal-esophageal intubation devices
US5339805A (en) * 1989-11-08 1994-08-23 Parker Jeffrey D Blind orolaryngeal and oroesophageal guiding and aiming device
US5391248A (en) * 1992-03-05 1995-02-21 Brain; Archibald I. J. Method of making an artificial airway device
US5400771A (en) * 1993-01-21 1995-03-28 Pirak; Leon Endotracheal intubation assembly and related method
US5421325A (en) * 1992-04-30 1995-06-06 Cinberg; James Z. Endotracheal tube assembly and related method
US5529582A (en) * 1994-02-01 1996-06-25 Fukuhara; Tomio Apparatus for inserting laryngeal mask
US5546936A (en) * 1992-05-19 1996-08-20 Mallinckrodt Medical, Inc. Tracheal tube with reinforced flexible segment
US5546935A (en) * 1993-03-09 1996-08-20 Medamicus, Inc. Endotracheal tube mounted pressure transducer
US5599301A (en) * 1993-11-22 1997-02-04 Advanced Cardiovascular Systems, Inc. Motor control system for an automatic catheter inflation system
US5623921A (en) * 1996-04-10 1997-04-29 Kinsinger; J. William Laryngeal mask airway and method for its use
US5626151A (en) * 1996-03-07 1997-05-06 The United States Of America As Represented By The Secretary Of The Army Transportable life support system
US5632271A (en) * 1996-03-22 1997-05-27 Brain; Archibald I. J. Laryngeal mask with gastric-drainage feature
USRE35531E (en) * 1995-01-26 1997-06-17 The Laryngeal Mask Company Ltd. Laryngeal mask assembly and method for removing same
US5653229A (en) * 1993-08-31 1997-08-05 Johns Hopkins University Cuffed oro-pharyngeal airway
US5655528A (en) * 1995-03-17 1997-08-12 Smiths Industries Public Limited Company Introducers
US5711293A (en) * 1994-01-12 1998-01-27 Brain; Archibald Ian Jeremy Forming tool for use with a laryngeal mask
US5738094A (en) * 1996-08-30 1998-04-14 Hoftman; Moshe Anesthesia/respirator mask with reduced nasal section enclosure and inflatable cuff
US5743254A (en) * 1997-03-18 1998-04-28 Parker Medical Limited Partnership Orotracheal intubation guide
US5743258A (en) * 1994-05-31 1998-04-28 Mallinckrodt Medical, Inc. Pharyngeal airway
US5746202A (en) * 1995-07-07 1998-05-05 Smiths Industries Plc Introducer for oral tubes
US5771889A (en) * 1995-03-14 1998-06-30 Smiths Industries Plc Laryngeal mask airways
US5778872A (en) * 1996-11-18 1998-07-14 Medlis, Inc. Artificial ventilation system and methods of controlling carbon dioxide rebreathing
US5791341A (en) * 1995-12-19 1998-08-11 Bullard; James Roger Oropharyngeal stent with laryngeal aditus shield and nasal airway with laryngeal aditus shield
US5856510A (en) * 1996-12-16 1999-01-05 Allelix Biopharmaceuticals Inc. 5-alkenyl and 5-alkynyl indole compounds
US5855203A (en) * 1997-12-19 1999-01-05 Matter; Jean-Paul Respiratory circuit with in vivo sterilization
US5860418A (en) * 1994-07-28 1999-01-19 Comasec International S.A. Method and an arrangement for checking the operation of breathing equipment
US5865176A (en) * 1995-03-08 1999-02-02 Michael Jeffrey O'Neil Artificial airway device with sealing cuff for distal end
US5878745A (en) * 1996-03-01 1999-03-09 Brain; Archibald I.J. Gastro-laryngeal mask
US5881726A (en) * 1996-11-19 1999-03-16 Smiths Industries Public Limited Company Laryngeal mask airways and their manufacture
US5893891A (en) * 1993-06-11 1999-04-13 Chas. A. Blatchford & Sons Limited Prosthesis control system
US5896858A (en) * 1995-10-03 1999-04-27 Brain; Archibald Ian Jeremy Endotracheal-tube guidance system with epiglottis-elevating feature
US5915383A (en) * 1997-04-29 1999-06-29 Smiths Industries Public Limited Company Cuffed medico-surgical tubes
US5924862A (en) * 1997-10-28 1999-07-20 White; Dennis J Method and apparatus to verify dental model accuracy
US6012452A (en) * 1997-10-16 2000-01-11 Smiths Industries Public Limited Company Laryngeal mask assemblies
US6021779A (en) * 1997-02-05 2000-02-08 Smiths Industries Public Limited Company Laryngeal mask airways and their manufacture
US6050264A (en) * 1996-09-18 2000-04-18 Smiths Industries Public Limited Company Laryngeal mask assemblies
US6062219A (en) * 1993-11-09 2000-05-16 Cprx Llc Apparatus and methods for assisting cardiopulmonary resuscitation
US6070581A (en) * 1996-10-16 2000-06-06 Augustine Medical, Inc. Laryngeal airway device
US6079409A (en) * 1997-07-25 2000-06-27 Brain; Archibald Ian Jeremy Intubating laryngeal mask
US6213120B1 (en) * 1997-08-21 2001-04-10 Instrumentarium Corporation Device and method for determining gas volume and volumetric changes in a ventilator
US6224562B1 (en) * 1998-06-11 2001-05-01 Cprx Llc Methods and devices for performing cardiopulmonary resuscitation
US6240922B1 (en) * 1997-03-18 2001-06-05 Smiths Industries Public Limited Company Laryngeal mask assemblies
US6251093B1 (en) * 1991-07-16 2001-06-26 Heartport, Inc. Methods and apparatus for anchoring an occluding member
US6390093B1 (en) * 1999-04-14 2002-05-21 Vital Signs, Inc. Artificial airway device and method of its use
US20030051734A1 (en) * 1998-08-13 2003-03-20 Brain Archibald Ian Jeremy Laryngeal mask airway device
US20030101998A1 (en) * 1997-12-24 2003-06-05 Laryngeal Mask Company (Uk) Limited Monitoring and control for a laryngeal mask airway device
US20030131845A1 (en) * 2002-01-04 2003-07-17 Future Top Medical Environment Technic Co., Ltd. Auxiliary device for placing larynx cover for anesthetization
US20040020491A1 (en) * 2001-11-08 2004-02-05 Fortuna Anibal De Oliveira Combination artificial airway device and esophageal obturator
US6705318B1 (en) * 1999-04-09 2004-03-16 Archibald I. J. Brain Disposable LMA
US7004169B2 (en) * 1999-10-07 2006-02-28 Indian Ocean Medical Inc. Laryngeal mask with large-bore gastric drainage
US7051096B1 (en) * 1999-09-02 2006-05-23 Citicorp Development Center, Inc. System and method for providing global self-service financial transaction terminals with worldwide web content, centralized management, and local and remote administration
US7051736B2 (en) * 2000-08-17 2006-05-30 University Of Florida Endotracheal tube pressure monitoring system and method of controlling same
US7156100B1 (en) * 1998-10-06 2007-01-02 The Laryngeal Mask Company Ltd. Laryngeal mask airway device
US7159589B2 (en) * 2001-08-23 2007-01-09 Indian Ocean Medical Inc. Disposable laryngeal mask airway device

Family Cites Families (115)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2099127A (en) 1936-12-30 1937-11-16 Foregger Co Inc Pharyngeal bulb gasway
US2862498A (en) 1957-06-14 1958-12-02 Don J Weekes Endotracheal tube
US3529596A (en) 1968-04-03 1970-09-22 Charles G Garner Automatic intermittent tracheotomy tube cuff inflator-deflator
US3774616A (en) 1972-02-01 1973-11-27 Perry Plastics Inc Endotracheal tube holder and airway
US4116201A (en) 1976-12-20 1978-09-26 The Kendall Company Catheter with inflation control device
US4178938A (en) 1977-06-24 1979-12-18 Au Anthony S Pressure control systems
US4178940A (en) 1977-06-24 1979-12-18 Au Anthony S Pressure control systems
US4166467A (en) 1977-08-08 1979-09-04 Metatech Corporation Bite block for endotracheal tube
US4351330A (en) 1978-01-30 1982-09-28 Scarberry Eugene N Emergency internal defibrillation
US4231365A (en) 1978-01-30 1980-11-04 Scarberry Eugene N Emergency resuscitation apparatus
US4425911A (en) 1981-07-27 1984-01-17 Raymond Luomanen Bite-block
US4471775A (en) 1982-09-07 1984-09-18 Clair Michael W Endotracheal tube cuff synchronizing system
DE3327342C2 (en) 1983-07-29 1989-11-16 Draegerwerk Ag, 2400 Luebeck, De
US4553540A (en) 1983-08-16 1985-11-19 Straith Richard E Airway
US4793327A (en) 1986-01-21 1988-12-27 Frankel Alfred R Device for opening a patient's airway during automatic intubation of the trachea
JPH0213591B2 (en) 1985-07-03 1990-04-04 Totsutori Daigakucho
US4700700A (en) 1986-09-15 1987-10-20 The Cleveland Clinic Foundation Endotracheal tube
GB2205499B (en) 1987-06-05 1991-01-16 Archibald Ian Jeremy Brain Artificial airway device
US4872483B1 (en) 1987-12-31 1993-01-26 Int Medical Products Inc
US5067496A (en) 1988-04-07 1991-11-26 Shiley Incorporated Tracheostomy tube
US4972963A (en) * 1988-10-31 1990-11-27 Guarriello Henry J Blow molded article with reverse lip
US4953547A (en) 1989-01-26 1990-09-04 Poole Jr Samuel E Drug administering endotracheal respiration systems
US5169379A (en) 1989-06-14 1992-12-08 L-Vad Technology In-series ventricular assist system and method of controlling same
JPH0565198B2 (en) 1989-07-06 1993-09-17 Bii Hazaado Patoritsuku
WO1991003207A1 (en) 1989-09-08 1991-03-21 Boston Scientific Corporation Physiologic low stress angioplasty
GB9003857D0 (en) 1990-02-21 1990-04-18 Smiths Industries Plc Medico-surgical tube assemblies
US5113875A (en) 1991-09-24 1992-05-19 Bennett Trevor S Inflatable leg-supporting bolster
US5355879A (en) 1992-09-28 1994-10-18 Brain Archibald Ian Jeremy Laryngeal-mask construction
US5273537A (en) 1992-03-06 1993-12-28 Scimed Life Systems, Inc. Power-assisted inflation apparatus
US5249571A (en) 1992-05-21 1993-10-05 Brain Archibald Ian Jeremy Laryngeal clamp airway
US5241956A (en) 1992-05-21 1993-09-07 Brain Archibald Ian Jeremy Laryngeal mask airway with concentric drainage of oesophagus discharge
DE4222220A1 (en) 1992-07-07 1994-01-13 Deutsche Aerospace A method for measuring and regulating the pressure in the sealing cuff of a tracheal tube
DE69302536D1 (en) 1992-07-21 1996-06-13 Brain Archibald Ian Jeremy Mask for the larynx with an integrated Reflexionsoximeter
FR2709251B1 (en) 1993-08-26 1995-11-10 Georges Boussignac respiratory assistance tube.
US5551420A (en) 1993-11-09 1996-09-03 Cprx, Inc. CPR device and method with structure for increasing the duration and magnitude of negative intrathoracic pressures
US5692498A (en) 1993-11-09 1997-12-02 Cprx, Inc. CPR device having valve for increasing the duration and magnitude of negative intrathoracic pressures
US5459700A (en) 1993-11-22 1995-10-17 Advanced Cardiovascular Systems, Inc. Manual timer control for inflation device
US5554673A (en) 1993-11-29 1996-09-10 Polygenex International, Inc. Dip molded polyurethane film compositions
US5499625A (en) 1994-01-27 1996-03-19 The Kendall Company Esophageal-tracheal double lumen airway
US5582167A (en) 1994-03-02 1996-12-10 Thomas Jefferson University Methods and apparatus for reducing tracheal infection using subglottic irrigation, drainage and servoregulation of endotracheal tube cuff pressure
GB9411215D0 (en) 1994-06-04 1994-07-27 Brain Archibald Ian Jeremy A fibreoptic intubating laryngeal mask airway
US5569219A (en) 1994-09-13 1996-10-29 Hakki; A-Hamid Collapsible catheter
GB9422224D0 (en) 1994-11-03 1994-12-21 Brain Archibald Ian Jeremy A laryngeal mask airway device modified to detect and/or stimulate mescle or nerve activity
DE4447186A1 (en) 1994-12-30 1996-07-11 Johann Dr Med Wittenbeck Larynx mask for fibre optic endotracheal intubation with simultaneous artificial respiration
US5577693A (en) 1995-01-11 1996-11-26 Children's Medical Center Corporation Anesthesia circuit stand
US5513627A (en) 1995-01-27 1996-05-07 Flam; Gary H. Esophageal tracheal intubator airway
GB2298797B (en) 1995-03-14 1998-12-09 Smiths Industries Plc Laryngeal mask airways
WO1997003711A3 (en) 1995-07-14 1997-02-27 Techbase Pty Ltd Spacer for aerosol medication
DE69636973D1 (en) 1995-09-12 2007-04-26 Philip Stuart Esnouf Disposable oxygen enrichment device
CN1134274C (en) 1995-10-03 2004-01-14 阿奇巴尔德・伊恩・杰里米・布雷恩 Artificial airway device
US5794617A (en) 1995-10-19 1998-08-18 Louis M. Gerson Co., Inc. Face mask and retainer
US5832916A (en) 1996-02-20 1998-11-10 Interspiro Ab Method and system for checking the operability of electrical-based components in a breathing equipment
US5694929A (en) 1996-02-26 1997-12-09 Christopher; Kent L. Method and apparatus for ventilation/oxygenation during guided insertion of an endotracheal tube
JP2000508553A (en) * 1996-04-11 2000-07-11 マリンクロッド・メディカル・インコーポレイテッド Bronchial aspiration tube having flexible and rigid portions
US5682880A (en) 1996-07-26 1997-11-04 Brain; Archibald Ian Jeremy Laryngeal-mask airway with guide element, stiffener, and fiberoptic access
GB2317342B (en) 1996-09-18 2000-03-29 Smiths Industries Plc Laryngeal mask assemblies
GB9620609D0 (en) 1996-10-03 1996-11-20 Smiths Industries Plc Laryngeal mask airways and their manufacture
GB2317830B (en) 1996-10-03 2000-03-29 Smiths Industries Plc Laryngeal mask airways and their manufacture
US6427686B2 (en) 1996-10-16 2002-08-06 Augustine Medical, Inc. Airway device with provision for coupling to an introducer
EP0836860A3 (en) 1996-10-16 1998-09-16 Smiths Industries Public Limited Company Tracheal assemblies
GB2318735B (en) 1996-11-02 2000-04-19 Smiths Industries Plc Laryngeal mask airways and their manufacture
GB9622880D0 (en) 1996-11-02 1997-01-08 Smiths Industries Plc Laryngeal mask airways and thier manufacture
US6003511A (en) 1996-11-18 1999-12-21 Medlis Corp. Respiratory circuit terminal for a unilimb respiratory device
GB2319478B (en) 1996-11-19 2000-04-19 Smiths Industries Plc Laryngeal mask airways and their manufacture
US5921239A (en) * 1997-01-07 1999-07-13 Sunrise Medical Hhg Inc. Face mask for patient breathing
GB9705586D0 (en) 1997-03-18 1997-05-07 Smiths Industries Plc Laryngeal mask assemblies
GB9705537D0 (en) 1997-03-18 1997-05-07 Smiths Industries Plc Laryngeal mask assemblies
GB2323289B (en) 1997-03-18 2001-02-14 Smiths Industries Plc Laryngeal mask assemblies
US5937860A (en) 1997-04-10 1999-08-17 Cook; Daniel J. Laryngeal mask
US8631796B2 (en) * 1997-04-10 2014-01-21 Cookgas, L.L.C. Laryngeal mask
US6131571A (en) 1997-04-30 2000-10-17 University Of Florida Ventilation apparatus and anesthesia delivery system
US5988167A (en) 1997-05-02 1999-11-23 Kamen; Jack M. Foam cuff for laryngeal mask airway
GB9809150D0 (en) 1997-05-03 1998-07-01 Smiths Industries Plc Laryngeal mask assemblies
GB9709297D0 (en) 1997-05-03 1997-06-25 Smiths Industries Plc Laryngeal mask assemblies
GB9710645D0 (en) 1997-05-22 1997-07-16 Smiths Industries Plc Cuffed tube assemblies
JPH10323391A (en) 1997-05-23 1998-12-08 Aoki Shigeru Stable laryngeal mask
US5850832A (en) 1997-06-23 1998-12-22 Chu; Kyo Y. Laryngeal mask airway insertion guide
US5957133A (en) 1997-07-21 1999-09-28 Hart; William T. Oral appliance with negative air supply for reducing sleep apnea and snoring
GB9716287D0 (en) 1997-08-02 1997-10-08 Nimmo Garry H Apparatus for shaping a laryngeal mask
US6474332B2 (en) 1997-10-03 2002-11-05 Wisconsin Medical Incorporated Bite block
GB9725389D0 (en) * 1997-12-02 1998-01-28 Smiths Industries Plc Laryngeal mask assemblies
US6003510A (en) 1997-12-04 1999-12-21 Anunta; Boonchuay Hand tool for introducing a laryngeal mask
US5976075A (en) 1997-12-15 1999-11-02 University Of Massachusetts Endoscope deployment apparatus
US7331346B2 (en) 1997-12-24 2008-02-19 Indian Ocean Medical, Inc. Monitoring and control for a laryngeal mask airway device
US5976072A (en) * 1998-01-29 1999-11-02 Johns Hopkins University Copa method for fiberoptic endotracheal intubation
GB9803199D0 (en) 1998-02-17 1998-04-08 Smiths Industries Plc Laryngeal mask airways and their manufacture
US6110143A (en) 1998-06-25 2000-08-29 Kamen; Jack M. Inflation/deflation medical device
US6155257A (en) 1998-10-07 2000-12-05 Cprx Llc Cardiopulmonary resuscitation ventilator and methods
WO2000023135A1 (en) 1998-10-19 2000-04-27 Dimitriou K Vasilios Device for guided tracheal intubation
WO2000022985A1 (en) 1998-10-22 2000-04-27 Children's Hospital, Inc. Apparatus for controlled ventilation of a patient
US6119695A (en) * 1998-11-25 2000-09-19 Augustine Medical, Inc. Airway device with provision for lateral alignment, depth positioning, and retention in an airway
US6269813B1 (en) 1999-01-15 2001-08-07 Respironics, Inc. Tracheal gas insufflation bypass and phasic delivery system and method
US6149603A (en) 1999-05-14 2000-11-21 Ventrex, Inc. Method and apparatus for determining whether an intubated patient has been properly intubated
US6647984B1 (en) 1999-06-24 2003-11-18 Caradyne (R&D) Limited Apparatus for controlling cuff pressure in an endotracheal tube
US6315739B1 (en) 1999-09-27 2001-11-13 Instrumentarium Corporation Apparatus and method for measuring the intratracheal pressure of an intubated patient
US6386199B1 (en) * 1999-09-29 2002-05-14 David D. Alfery Perilaryngeal oral airway
GB9923628D0 (en) 1999-10-06 1999-12-08 Smiths Industries Plc Laryngeal mask assemblies
GB0002805D0 (en) 2000-02-08 2000-03-29 Smiths Industries Plc Masks and their manufacture
US6352077B1 (en) * 2000-05-01 2002-03-05 Tilak M. Shah Film welded reservoir bag for breathing circuit and method of making the same
GB0017515D0 (en) 2000-07-15 2000-08-30 Miller Donald M A streamlined liner of the pharangeal airway (slipa)
US6450164B1 (en) 2000-08-17 2002-09-17 Michael J. Banner Endotracheal tube pressure monitoring system and method of controlling same
US6546931B2 (en) * 2000-12-13 2003-04-15 Future Top Medical Environment Technic, Co., Ltd. Supraglottic airway structure specifically used for anesthesia
GB0031661D0 (en) 2000-12-22 2001-02-07 Smiths Group Plc Laryngeal mask assemblies
CN2542276Y (en) * 2002-04-10 2003-04-02 张地利 Laryngeal cover
US6651666B1 (en) 2002-07-23 2003-11-25 Norman L. Owens Variable cuff pressure adapter
GB0218868D0 (en) * 2002-08-14 2002-09-25 Nasir Muhammed A Improved airway management device
JP4963959B2 (en) * 2003-08-14 2012-06-27 ナジール,ムハマド,アスラム Improved airway device
US7694682B2 (en) * 2003-04-11 2010-04-13 Ambu A/S Laryngeal mask and a method manufacturing same
US7134431B2 (en) 2003-09-08 2006-11-14 Indian Ocean Medical Inc. Laryngeal mask airway device with position controlling tab
US7128071B2 (en) 2003-09-10 2006-10-31 Indian Ocean Medical Inc. Intubating laryngeal mask airway device with fiber optic assembly
US20050178388A1 (en) * 2004-02-18 2005-08-18 Kuo Chi C. Throat mask with soft tube
US7096868B2 (en) 2004-03-09 2006-08-29 Nellcor Puritan Bennett Incorporated Laryngeal airway device
US7546838B2 (en) 2004-08-09 2009-06-16 Bih-Chern Lin Laryngeal-mask construction
GB0510951D0 (en) 2005-05-27 2005-07-06 Laryngeal Mask Company The Ltd Laryngeal mask airway device
GB201016562D0 (en) 2010-10-01 2010-11-17 Laryngeal Mask Company The Ltd Artificial airway device

Patent Citations (99)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2839788A (en) * 1953-04-24 1958-06-24 Dembiak Matthew Method of making hollow plastic or rubber articles
US3554673A (en) * 1969-01-31 1971-01-12 Sage Instr Inc Syringe pump
US3683908A (en) * 1969-10-20 1972-08-15 Tantrimudalige Anthony Don Mic Apparatus for sealing the oesophagus and providing artificial respiration
US3794036A (en) * 1972-08-02 1974-02-26 R Carroll Pressure regulated inflatable cuff for an endotracheal or tracheostomy tube
US4104357A (en) * 1973-01-10 1978-08-01 Monster Molding, Inc. Method of rotational molding about plural axes at low rotational speeds
US3931822A (en) * 1974-02-26 1976-01-13 Marici Frank N Automatic alternating cuff endo tracheal tube inflator
US4067329A (en) * 1975-01-17 1978-01-10 Union Chimique Continentale-U.C.C. Tube disconnection warning device
US4134407A (en) * 1977-03-25 1979-01-16 Elam James O External pressure-volume monitor for endotracheal cuff
US4159722A (en) * 1977-03-28 1979-07-03 Sherwood Medical Industries, Inc. Pressure regulator for endotracheal tube cuff or the like
US4285340A (en) * 1979-03-16 1981-08-25 Gezari Walter A Apparatus for controlling the pressure in a tracheal cuff
US4256099A (en) * 1979-03-21 1981-03-17 Dryden Gale E Two-tube resuscitation system
US4510273A (en) * 1979-11-08 1985-04-09 Mitsui Petrochemical Industries, Ltd. Thixotropic agent
US4446864A (en) * 1980-07-10 1984-05-08 Watson Robert L Emergency ventilation tube
US4509514A (en) * 1981-12-16 1985-04-09 Brain Archibald Ian Jeremy Artificial airway device
US4531330A (en) * 1982-02-01 1985-07-30 Phillips William E Bed/shelter unit
US4501273A (en) * 1982-09-30 1985-02-26 Mcginnis Gerald E Endotracheal tube with pressure controlled inflatable cuff
US4526196A (en) * 1983-01-26 1985-07-02 Nayan S. Shah Gas pressure measuring and regulating device and method
US4583917A (en) * 1983-06-17 1986-04-22 Shah Nayan S Pressure regulating and monitoring device
US4689041A (en) * 1984-01-20 1987-08-25 Eliot Corday Retrograde delivery of pharmacologic and diagnostic agents via venous circulation
US4825862A (en) * 1986-02-14 1989-05-02 Tottori University Pressure regulator for cuff of endotracheal tube with superposition of ventilating pressure variation
US5042469A (en) * 1987-03-24 1991-08-27 Augustine Medical, Inc. Tracheal intubation guide
US4832020A (en) * 1987-03-24 1989-05-23 Augustine Scott D Tracheal intubation guide
US5203320A (en) * 1987-03-24 1993-04-20 Augustine Medical, Inc. Tracheal intubation guide
US4798597A (en) * 1987-04-29 1989-01-17 Sherwood Medical Co Flexible composite intubation tube
US4924862A (en) * 1987-08-19 1990-05-15 Gary Levinson Pressure controller and leak detector for tracheal tube cuff
US4850349A (en) * 1987-12-04 1989-07-25 Farahany Amir H Endotracheal tube sealing cuff system
US4856510A (en) * 1988-04-06 1989-08-15 Kowalewski Ryszard J Tracheal tube inflator
US4995388A (en) * 1989-03-22 1991-02-26 Brain Archibald I Artificial airway device
US4981470A (en) * 1989-06-21 1991-01-01 Synectics Medical, Inc. Intraesophageal catheter with pH sensor
US5042476A (en) * 1989-08-10 1991-08-27 Smith Charles A Endotracheal tube protection arrangement
US5038766A (en) * 1989-11-08 1991-08-13 Parker Jeffrey D Blind orolaryngeal and oroesophageal guiding and aiming device
US5339805A (en) * 1989-11-08 1994-08-23 Parker Jeffrey D Blind orolaryngeal and oroesophageal guiding and aiming device
US5218970A (en) * 1990-12-05 1993-06-15 Smiths Industries Public Limited Company Tracheal tube cuff pressure monitor
US5303697A (en) * 1991-02-11 1994-04-19 Brain Archibald Ian Jeremy Artificial airway device
US5339808A (en) * 1991-04-02 1994-08-23 Don Michael T Anthony Endotracheal-esophageal intubation devices
US5235973A (en) * 1991-05-15 1993-08-17 Gary Levinson Tracheal tube cuff inflation control and monitoring system
US5487383A (en) * 1991-05-15 1996-01-30 Levinson; Gary Tracheal tube cuff inflation control and monitoring system
US6251093B1 (en) * 1991-07-16 2001-06-26 Heartport, Inc. Methods and apparatus for anchoring an occluding member
US5277178A (en) * 1991-09-14 1994-01-11 John Dingley Medico-surgical device
US5241325A (en) * 1991-10-31 1993-08-31 Hewlett-Packard Company Print cartridge cam actuator linkage
US5305743A (en) * 1992-03-05 1994-04-26 Brain Archibald Ian Jeremy Artificial airway device
US5391248A (en) * 1992-03-05 1995-02-21 Brain; Archibald I. J. Method of making an artificial airway device
US5421325A (en) * 1992-04-30 1995-06-06 Cinberg; James Z. Endotracheal tube assembly and related method
US5546936A (en) * 1992-05-19 1996-08-20 Mallinckrodt Medical, Inc. Tracheal tube with reinforced flexible segment
US5282464A (en) * 1992-07-21 1994-02-01 Brain Archibald Ian Jeremy Combined laryngeal mask and reflectance oximeter
US5297547A (en) * 1992-07-30 1994-03-29 Brain Archibald Ian Jeremy Laryngeal mask construction
US5311861A (en) * 1992-08-24 1994-05-17 Miller Donald M Breathing apparatus
US5400771A (en) * 1993-01-21 1995-03-28 Pirak; Leon Endotracheal intubation assembly and related method
US5331967A (en) * 1993-02-05 1994-07-26 Playa De Los Vivos S.A. Tracheal intubation monitoring apparatus and method
US5546935A (en) * 1993-03-09 1996-08-20 Medamicus, Inc. Endotracheal tube mounted pressure transducer
US5893891A (en) * 1993-06-11 1999-04-13 Chas. A. Blatchford & Sons Limited Prosthesis control system
US5653229A (en) * 1993-08-31 1997-08-05 Johns Hopkins University Cuffed oro-pharyngeal airway
US6062219A (en) * 1993-11-09 2000-05-16 Cprx Llc Apparatus and methods for assisting cardiopulmonary resuscitation
US5599301A (en) * 1993-11-22 1997-02-04 Advanced Cardiovascular Systems, Inc. Motor control system for an automatic catheter inflation system
US5711293A (en) * 1994-01-12 1998-01-27 Brain; Archibald Ian Jeremy Forming tool for use with a laryngeal mask
US5529582A (en) * 1994-02-01 1996-06-25 Fukuhara; Tomio Apparatus for inserting laryngeal mask
US5743258A (en) * 1994-05-31 1998-04-28 Mallinckrodt Medical, Inc. Pharyngeal airway
US5860418A (en) * 1994-07-28 1999-01-19 Comasec International S.A. Method and an arrangement for checking the operation of breathing equipment
USRE35531E (en) * 1995-01-26 1997-06-17 The Laryngeal Mask Company Ltd. Laryngeal mask assembly and method for removing same
US5865176A (en) * 1995-03-08 1999-02-02 Michael Jeffrey O'Neil Artificial airway device with sealing cuff for distal end
US5771889A (en) * 1995-03-14 1998-06-30 Smiths Industries Plc Laryngeal mask airways
US5655528A (en) * 1995-03-17 1997-08-12 Smiths Industries Public Limited Company Introducers
US5746202A (en) * 1995-07-07 1998-05-05 Smiths Industries Plc Introducer for oral tubes
US5896858A (en) * 1995-10-03 1999-04-27 Brain; Archibald Ian Jeremy Endotracheal-tube guidance system with epiglottis-elevating feature
US5791341A (en) * 1995-12-19 1998-08-11 Bullard; James Roger Oropharyngeal stent with laryngeal aditus shield and nasal airway with laryngeal aditus shield
US5878745A (en) * 1996-03-01 1999-03-09 Brain; Archibald I.J. Gastro-laryngeal mask
US5626151A (en) * 1996-03-07 1997-05-06 The United States Of America As Represented By The Secretary Of The Army Transportable life support system
US5632271A (en) * 1996-03-22 1997-05-27 Brain; Archibald I. J. Laryngeal mask with gastric-drainage feature
US5623921A (en) * 1996-04-10 1997-04-29 Kinsinger; J. William Laryngeal mask airway and method for its use
US5738094A (en) * 1996-08-30 1998-04-14 Hoftman; Moshe Anesthesia/respirator mask with reduced nasal section enclosure and inflatable cuff
US6050264A (en) * 1996-09-18 2000-04-18 Smiths Industries Public Limited Company Laryngeal mask assemblies
US6070581A (en) * 1996-10-16 2000-06-06 Augustine Medical, Inc. Laryngeal airway device
US5778872A (en) * 1996-11-18 1998-07-14 Medlis, Inc. Artificial ventilation system and methods of controlling carbon dioxide rebreathing
US5881726A (en) * 1996-11-19 1999-03-16 Smiths Industries Public Limited Company Laryngeal mask airways and their manufacture
US5856510A (en) * 1996-12-16 1999-01-05 Allelix Biopharmaceuticals Inc. 5-alkenyl and 5-alkynyl indole compounds
US6021779A (en) * 1997-02-05 2000-02-08 Smiths Industries Public Limited Company Laryngeal mask airways and their manufacture
US5743254A (en) * 1997-03-18 1998-04-28 Parker Medical Limited Partnership Orotracheal intubation guide
US6240922B1 (en) * 1997-03-18 2001-06-05 Smiths Industries Public Limited Company Laryngeal mask assemblies
US5915383A (en) * 1997-04-29 1999-06-29 Smiths Industries Public Limited Company Cuffed medico-surgical tubes
US6079409A (en) * 1997-07-25 2000-06-27 Brain; Archibald Ian Jeremy Intubating laryngeal mask
US6213120B1 (en) * 1997-08-21 2001-04-10 Instrumentarium Corporation Device and method for determining gas volume and volumetric changes in a ventilator
US6012452A (en) * 1997-10-16 2000-01-11 Smiths Industries Public Limited Company Laryngeal mask assemblies
US5924862A (en) * 1997-10-28 1999-07-20 White; Dennis J Method and apparatus to verify dental model accuracy
US5855203A (en) * 1997-12-19 1999-01-05 Matter; Jean-Paul Respiratory circuit with in vivo sterilization
US20030101998A1 (en) * 1997-12-24 2003-06-05 Laryngeal Mask Company (Uk) Limited Monitoring and control for a laryngeal mask airway device
US6234985B1 (en) * 1998-06-11 2001-05-22 Cprx Llc Device and method for performing cardiopulmonary resuscitation
US6224562B1 (en) * 1998-06-11 2001-05-01 Cprx Llc Methods and devices for performing cardiopulmonary resuscitation
US20060124132A1 (en) * 1998-08-13 2006-06-15 Brain Archibald I J Laryngeal mask airway device
US20030051734A1 (en) * 1998-08-13 2003-03-20 Brain Archibald Ian Jeremy Laryngeal mask airway device
US7156100B1 (en) * 1998-10-06 2007-01-02 The Laryngeal Mask Company Ltd. Laryngeal mask airway device
US6705318B1 (en) * 1999-04-09 2004-03-16 Archibald I. J. Brain Disposable LMA
US6390093B1 (en) * 1999-04-14 2002-05-21 Vital Signs, Inc. Artificial airway device and method of its use
US7051096B1 (en) * 1999-09-02 2006-05-23 Citicorp Development Center, Inc. System and method for providing global self-service financial transaction terminals with worldwide web content, centralized management, and local and remote administration
US7004169B2 (en) * 1999-10-07 2006-02-28 Indian Ocean Medical Inc. Laryngeal mask with large-bore gastric drainage
US7051736B2 (en) * 2000-08-17 2006-05-30 University Of Florida Endotracheal tube pressure monitoring system and method of controlling same
US7159589B2 (en) * 2001-08-23 2007-01-09 Indian Ocean Medical Inc. Disposable laryngeal mask airway device
US7040322B2 (en) * 2001-11-08 2006-05-09 Fortuna Anibal De Oliveira Combination artificial airway device and esophageal obturator
US20040020491A1 (en) * 2001-11-08 2004-02-05 Fortuna Anibal De Oliveira Combination artificial airway device and esophageal obturator
US20030131845A1 (en) * 2002-01-04 2003-07-17 Future Top Medical Environment Technic Co., Ltd. Auxiliary device for placing larynx cover for anesthetization

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8555882B2 (en) 1997-03-14 2013-10-15 Covidien Lp Ventilator breath display and graphic user interface
US8555881B2 (en) 1997-03-14 2013-10-15 Covidien Lp Ventilator breath display and graphic interface
US9662465B2 (en) 2005-05-27 2017-05-30 The Laryngeal Mask Company Ltd. Laryngeal mask airway device
US20120085351A1 (en) * 2005-05-27 2012-04-12 The Laryngeal Mask Company Limited Laryngeal mask airway device
US9522245B2 (en) 2005-05-27 2016-12-20 The Laryngeal Mask Company Ltd. Laryngeal mask airway device and method of manufacture
US9498591B2 (en) 2005-05-27 2016-11-22 The Laryngeal Mask Company Ltd. Laryngeal mask airway device with a support for preventing occlusion
US8776797B2 (en) * 2005-05-27 2014-07-15 The Laryngeal Mask Company Ltd. Laryngeal mask airway device
US20090145438A1 (en) * 2005-05-27 2009-06-11 The Laryngeal Mask Company Ltd. Laryngeal mask airway device
US8597198B2 (en) 2006-04-21 2013-12-03 Covidien Lp Work of breathing display for a ventilation system
US8453645B2 (en) 2006-09-26 2013-06-04 Covidien Lp Three-dimensional waveform display for a breathing assistance system
US20100313893A1 (en) * 2007-10-30 2010-12-16 The Laryngeal Mask Company, Ltd. Laryngeal mask with tape tab
US9265904B2 (en) 2009-07-06 2016-02-23 Teleflex Life Sciences Artificial airway
US8924878B2 (en) 2009-12-04 2014-12-30 Covidien Lp Display and access to settings on a ventilator graphical user interface
US9119925B2 (en) 2009-12-04 2015-09-01 Covidien Lp Quick initiation of respiratory support via a ventilator user interface
US8335992B2 (en) 2009-12-04 2012-12-18 Nellcor Puritan Bennett Llc Visual indication of settings changes on a ventilator graphical user interface
US8499252B2 (en) 2009-12-18 2013-07-30 Covidien Lp Display of respiratory data graphs on a ventilator graphical user interface
US8443294B2 (en) 2009-12-18 2013-05-14 Covidien Lp Visual indication of alarms on a ventilator graphical user interface
US9262588B2 (en) 2009-12-18 2016-02-16 Covidien Lp Display of respiratory data graphs on a ventilator graphical user interface
US9974912B2 (en) 2010-10-01 2018-05-22 Teleflex Life Sciences Unlimited Company Artificial airway device
US9675772B2 (en) 2010-10-15 2017-06-13 The Laryngeal Mask Company Limited Artificial airway device
US9950129B2 (en) 2014-10-27 2018-04-24 Covidien Lp Ventilation triggering using change-point detection

Also Published As

Publication number Publication date Type
ES2592912T3 (en) 2016-12-02 grant
EP1885424A1 (en) 2008-02-13 application
CN101203261A (en) 2008-06-18 application
CA2609472C (en) 2015-06-30 grant
DE202006021004U1 (en) 2011-11-30 grant
RU2406544C2 (en) 2010-12-20 grant
JP5089579B2 (en) 2012-12-05 grant
CN102688548B (en) 2016-01-20 grant
ES2586204T3 (en) 2016-10-13 grant
JP2008541819A (en) 2008-11-27 application
CA2609474A1 (en) 2006-11-30 application
KR20080015461A (en) 2008-02-19 application
JP2008541818A (en) 2008-11-27 application
JP4828598B2 (en) 2011-11-30 grant
US20100059061A1 (en) 2010-03-11 application
JP5219209B2 (en) 2013-06-26 grant
RU2007147032A (en) 2009-07-10 application
CN104248792A (en) 2014-12-31 application
RU2442615C2 (en) 2012-02-20 grant
US20120145161A1 (en) 2012-06-14 application
RU2411962C2 (en) 2011-02-20 grant
US8783256B2 (en) 2014-07-22 grant
RU2007147022A (en) 2009-07-10 application
JP2012179406A (en) 2012-09-20 application
US20090145438A1 (en) 2009-06-11 application
WO2006125990A1 (en) 2006-11-30 application
KR20080031212A (en) 2008-04-08 application
EP2377568B1 (en) 2016-05-11 grant
US20120145160A1 (en) 2012-06-14 application
CA2609472A1 (en) 2006-11-30 application
CA2609468A1 (en) 2006-11-30 application
WO2006125986A1 (en) 2006-11-30 application
JP2012157775A (en) 2012-08-23 application
US9662465B2 (en) 2017-05-30 grant
CA2609471A1 (en) 2006-11-30 application
JP2008541820A (en) 2008-11-27 application
JP6105863B2 (en) 2017-03-29 grant
CN101203262B (en) 2013-04-24 grant
US20080308109A1 (en) 2008-12-18 application
EP1885421A1 (en) 2008-02-13 application
KR20080031211A (en) 2008-04-08 application
EP2377568A1 (en) 2011-10-19 application
US20120085351A1 (en) 2012-04-12 application
WO2006125987A8 (en) 2008-01-24 application
CN101193677A (en) 2008-06-04 application
JP2012196553A (en) 2012-10-18 application
CN101203261B (en) 2011-01-12 grant
KR20080031213A (en) 2008-04-08 application
WO2006125987A1 (en) 2006-11-30 application
CN104248792B (en) 2018-02-06 grant
CN102688548A (en) 2012-09-26 application
JP5711701B2 (en) 2015-05-07 grant
EP1885422A1 (en) 2008-02-13 application
CA2609474C (en) 2014-08-19 grant
CN101203262A (en) 2008-06-18 application
CN101208125A (en) 2008-06-25 application
RU2412725C2 (en) 2011-02-27 grant
EP1885422B1 (en) 2016-06-22 grant
EP1885423A1 (en) 2008-02-13 application
JP2008541817A (en) 2008-11-27 application
US20140305432A1 (en) 2014-10-16 application
US9522245B2 (en) 2016-12-20 grant
RU2007147020A (en) 2009-07-10 application
WO2006125989A1 (en) 2006-11-30 application
US20140332008A1 (en) 2014-11-13 application
DE202006021001U1 (en) 2011-11-08 grant
US8776797B2 (en) 2014-07-15 grant
US9498591B2 (en) 2016-11-22 grant
GB0510951D0 (en) 2005-07-06 grant
CA2609471C (en) 2015-06-30 grant
CN101208125B (en) 2011-01-19 grant
RU2007147034A (en) 2009-07-10 application

Similar Documents

Publication Publication Date Title
US4637389A (en) Tubular device for intubation
US5520175A (en) Endotracheal tube with suctioning means
US5303697A (en) Artificial airway device
US6698430B2 (en) Laryngeal mask assemblies
US4688568A (en) Respiratory tube or airway
US6923176B2 (en) Resuscitation tube
US5791341A (en) Oropharyngeal stent with laryngeal aditus shield and nasal airway with laryngeal aditus shield
US6116243A (en) Laryngeal mask assemblies
US6983744B2 (en) Perilaryngeal oral airway with temperature sensor
US6546931B2 (en) Supraglottic airway structure specifically used for anesthesia
US7762261B1 (en) Combination artificial airway device and esophageal obturator
US5878745A (en) Gastro-laryngeal mask
US6705322B2 (en) Laryngeal mask airway
US6003514A (en) Laryngeal mask assemblies
US20020112728A1 (en) Laryngeal mask assemblies
US6240922B1 (en) Laryngeal mask assemblies
US20050229933A1 (en) Non-tracheal ventilation tube
US6196224B1 (en) Perilaryngeal oral airway
WO1997012640A1 (en) Artificial airway device
US6705318B1 (en) Disposable LMA
US20010054425A1 (en) Hyperpharyngeal tube
US6631720B1 (en) Laryngeal mask with large-bore gastric drainage
US20060027238A1 (en) Laryngeal-mask construction
US20020010417A1 (en) Transpharyngeal tube
US6439232B1 (en) Laryngeal mask airway device

Legal Events

Date Code Title Description
AS Assignment

Owner name: THE LARYNGEAL MASK COMPANY LTD., SEYCHELLES

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BRAIN, ARCHIBALD IAN JEREMY;REEL/FRAME:021229/0787

Effective date: 20080710