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US 2009/0156953 A1Published application
Methods and devices for sensing respiration and providing ventilation therapy
AssigneeBreathe Technologies, Inc.
InventorsAnthony Wondka, Gregory Kapust, Robert Bryan, Michael Khenansho
Life of this patent
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Abstract
Methods and systems are provided for intra-airway breath sensors where intra-airway breath sensors are not located within a ventilation gas delivery circuit, but are exposed to spontaneous respiration airflow from a patient. Furthermore, methods and systems of the present invention may be used to protect an intra-airway breath sensor from contacting tissue or accumulating debris that may impair abilities of the intra-airway breath sensors.
Claims90
A breath sensing and ventilation delivery apparatus comprising:
- a catheter,
- one or more intra-airway breath sensors coupled to an outer surface of the catheter, and
- an airflow permeable protector with a proximal end adapted to be positioned outside a patient and a distal end adapted to be placed in an airway of the patient, wherein the airflow permeable protector at least partially surrounds the catheter such that the airflow permeable protector prevents the one or more intra-airway breath sensors from contacting a tissue and reduces accumulation of debris on the one or more intra-airway breath sensors.
A breath sensing and ventilation delivery apparatus comprising:
- a ventilation catheter,
- a tracheostomy tube cannula with one or more fenestrations, wherein the cannula at least partially surrounds the ventilation catheter to create an annular space between an inner diameter of the cannula and an outer diameter of the ventilation catheter, and
- one or more intra-airway breath sensors within the annular space between an inner diameter of the cannula and an outer diameter of the ventilation catheter.
A breath sensing and ventilation delivery apparatus comprising:
- (a) a tubular member with a proximal end and a distal end, wherein the proximal end is adapted to be positioned outside a patient and the distal end is adapted to be positioned in an airway of the patient, wherein the tubular member includes one or more fenestrations, wherein spontaneous respiration by a patient passes through the one or more fenestrations,
- (b) one or more intra-airway breath sensors within a lumen of the tubular member, wherein a distal end portion of the tubular member is positioned in the airway such that the one or more intra-airway breath sensors are located within the airway, and
- wherein the one or more intra-airway breath sensors are exposed to the spontaneous respiration by the patient while within the airway.
A breath sensing and ventilation delivery apparatus comprising:
- (a) a ventilation catheter for ventilation gas delivery including at least one breath sensing lumen including a breath sensing lumen port,
- (b) an airflow permeable protector at least partially surrounding a portion of the catheter to protect the at least one breath sensing lumen port,
- (c) a connection to connect the at least one breath sensing lumen to an external sensor, and further wherein the catheter is configured to be placed into an airway of the patient to position the at least one breath sensing lumen port and permeable protector in the airway, and wherein the at least on breath sensing lumen port is protected by the airflow permable protector but is exposed to spontaneous airflow in the airway.
A breath sensing and ventilation catheter apparatus comprising:
- a ventilation catheter for ventilation gas delivery,
- at least one breath sensing lumen port positioned on an outside surface of the ventilation catheter,
- an airflow permeable shield at least partially surrounding the at least one breath sensing lumen port, and
- wherein the airflow permeable shield prevents contact of the at least one breath sensing lumen port with tissue and reduces accumulation of debris on the at least one breath sensing lumen port.
1 more element
A method for breath sensing and ventilation comprising:
- inserting at least one intra-airway breath sensor into a tubular guide positioned with a proximal end adapted to be outside of the patient and a distal end adapted to be inside an airway of a patient,
- wherein the at least one intra-airway breath sensor is not located within a ventilator gas flow, and
- wherein the at least one intra-airway breath sensor is shielded from contacting tissue and from accumulating debris by the tubular guide.
A method for breath sensing and ventilation comprising:
- inserting at least one intra-airway breath sensor in a path of a patient's airway airflow, but not within a ventilation gas delivery circuit,
- monitoring the patient's airway airflow with the at least one intra-airway breath sensor,
- operating at least one ventilation gas sensor within a ventilation gas delivery circuit, and
- monitoring the ventilator gas delivery with the at least one ventilation gas sensor simultaneous with monitoring the patient's airway airflow with the at least one intra-airway breath sensor.
1 more element
An apparatus for breath sensing and ventilation comprising:
- a ventilation catheter for supplying ventilation gas to a patient via a ventilation gas delivery channel in the catheter,
- a sensing conduit not in communication with the ventilation catheter gas delivery circuit,
- an opening in the sensing conduit for sensing respiration of the patient through the sensing conduit when the opening is positioned within an airway, and
- a sensing element communicating with the sensing conduit for sensing respiration of the patient, wherein the sensing element is located external to the patient, and
- a protector at least partially surrounding the ventilation catheter and sensing conduit opening.
2 more elements
A breath sensing and ventilation delivery apparatus comprising:
- a ventilation catheter,
- a tracheostomy tube cannula, wherein the tube cannula at least partially surrounds the ventilation catheter to create an annular space between an inner diameter of the cannula and an outer diameter of the ventilation catheter, and
- one or more intra-airway breath sensors within the annular space between an inner diameter of the cannula and an outer diameter of the ventilation catheter.
A breath sensing and ventilation delivery apparatus comprising:
- (a) a ventilation catheter including a ventilation gas delivery channel and a breath sensing lumen, wherein the breath sensing lumen includes a sensing port, and wherein the ventilation catheter is configured to be placed into the lumen of a tracheostomy tube such that the ventilation catheter is at least partially surrounded by the tracheostomy tube to prevent the sensing port from contacting the tracheal wall;
- and
- (b) a breath sensor external to the patient communicating with the breath sensing lumen.
A breath sensing and ventilation delivery apparatus comprising:
- (a) a ventilation catheter including (i) a ventilation gas delivery channel, (ii) a breath sensing lumen including a sensing port, (iii) an airflow permeable shield at least partially surrounding the sensing port;
- (b) a breath sensor placed external to the patient communicating with the breath sensing lumen, wherein the catheter is configured to be placed into an airway of a patient such that the sensing port and at least a portion of the airflow permeable shield is positioned in the airway of the patient such that the airflow permeable shield prevents the sensing port from contacting the airway wall, and such that the sensing port is exposed to airflow in the airway.
A method for breath sensing and ventilation delivery comprising:
- inserting a one end of a ventilation catheter into a tracheostomy tube of a patient, wherein the ventilation catheter includes a gas delivery channel, and a breath sensing lumen and a breath sensing lumen port, and
- connecting at a second end of the ventilation catheter the gas delivery channel to a ventilation gas source and the breath sensing lumen to a breath sensor element.
A method for breath sensing and ventilation delivery comprising:
- inserting a one end of a ventilation catheter through a stoma and into an airway of a patient, wherein the ventilation catheter includes a gas delivery channel a breath sensing lumen and a breath sensing lumen port, and a protective shield at least partially surrounding the catheter section inserted into the airway to prevent the sensing lumen port from contacting the airway wall, and
- connecting, at a second end of the ventilation catheter, the gas delivery channel to a ventilation gas source and the breath sensing lumen to a breath sensor element.
Dependencies are inferred from the claim text.