US20050061322A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and arrangement for reducing the volume of a lung
Assignee: Pulmonx Corp
•
Filing: 2004-11-03
•
Granted: —
•
Expires: 2024-11-03
Abstract
Abstract The invention relates to a method and an arrangement for reducing the volume of a patient's lung. A bronchial catheter ( 2 ) is introduced into a hyperexpanded lung area, and air is aspirated from there by means of an aspiration device ( 3 ). The associated segmental bronchus is then closed. According to the invention, the patient's spontaneous respiration is recorded by sensors ( 5 ), and aspiration of the air is carried out in synchrony with the patient's inhalation action. In order to prevent collapse of the associated segmental bronchus, a pressure generator is provided with which the associated segmental bronchus can be widened, by a compressed gas pulse, in synchrony with the aspiration. The pressure generator can be activated as a function of the aspirated air stream, which is monitored with a measuring device.
Inventors
- 👤 Lutz Freitag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:31
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0402; A61M16/0404
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
44 words
1 . A method for aspirating a hyperextended region of a patient's lung, said method comprising: monitoring the patient's respiration to determine periods of inspiration and exhalation; and aspirating air from the hyperextended region during periods of inspiration but not during periods of exhalation.
Claim 2
Dependent Claim
44 words
1 . A method for aspirating a hyperextended region of a patient's lung, said method comprising: monitoring the patient's respiration to determine periods of inspiration and exhalation; and aspirating air from the hyperextended region during periods of inspiration but not during periods of exhalation.
Claim 3
Dependent Claim
48 words
2 . A method as in claim 1 , wherein aspirating comprises isolating the hyperextended region from other regions of the lungs, introducing a bronchial catheter into the isolated region, and applying a negative pressure to the catheter during periods of inspiration but not during periods of exhalation.
Claim 4
Dependent Claim
26 words
3 . A method as in claim 1 or 2 , wherein monitoring comprises receiving a signal from a thorax impedance sensor on the patient's chest.
Claim 5
Dependent Claim
22 words
4 . A method as in claim 1 or 2 , wherein monitoring comprises receiving a signal from an acoustic measurement sensor.
Claim 6
Dependent Claim
21 words
5 . A method as in claim 1 or 2 , wherein monitoring comprises receiving a signal from an inductance respirometer.
Claim 7
Dependent Claim
31 words
6 . A method as in claim 2 , further comprising delivering compressed gas through the bronchial catheter to the hyperextended region prior to and/or during an initial phase of aspiration.
Claim 8
Dependent Claim
80 words
7 . A system for aspirating a hyperextended region of a patient's lung, said system comprising: a bronchial catheter configured to access said hyperextended lung region; a sensor configured to distinguish between periods of inspiration and exhalation during the patient's spontaneous respiration cycle; and an aspiration device connectable to the bronchial catheter and the sensor, said aspiration device having a control unit configured to aspirate air from the hyperextended region during periods of inspiration but not during periods of exhalation.
Claim 9
Dependent Claim
80 words
7 . A system for aspirating a hyperextended region of a patient's lung, said system comprising: a bronchial catheter configured to access said hyperextended lung region; a sensor configured to distinguish between periods of inspiration and exhalation during the patient's spontaneous respiration cycle; and an aspiration device connectable to the bronchial catheter and the sensor, said aspiration device having a control unit configured to aspirate air from the hyperextended region during periods of inspiration but not during periods of exhalation.
Claim 10
Dependent Claim
19 words
8 . A system as in claim 7 , wherein the sensor measures thorax impedance on the patient's chest.
Claim 11
Dependent Claim
14 words
9 . A system as in claim 7 , wherein the sensor measures sound.
Claim 12
Dependent Claim
16 words
10 . A system as in claim 7 , wherein the sensor comprises and inductance respirometer.
Claim 13
Dependent Claim
61 words
11 . A system as in any one of claims 7 to 10 , further comprising a gas pulse generator connectable to the bronchial catheter and the sensor, said gas pulse generator having a valve unit which delivers compressed gas through the bronchial catheter to the hyperextended region prior to and/or during and initial phase of aspiration through the aspiration device.
Claim 14
Dependent Claim
22 words
12 . A system as in claim 11 , further comprising an imaging unit for imaging the hyperextended lung area during treatment.
Claim 15
Dependent Claim
24 words
13 . A system as in claim 12 , wherein the imaging unit is coupled to the valve unit of the gas pulse generator.
Claim 16
Dependent Claim
42 words
14 . A method for aspirating a hyperextended region of a patient's lung, said method comprising: aspirating air from the hyperextended region; and delivering short pulses of compressed gas to the hyperextended region in order to open air passages to allow aspiration.
Claim 17
Dependent Claim
42 words
14 . A method for aspirating a hyperextended region of a patient's lung, said method comprising: aspirating air from the hyperextended region; and delivering short pulses of compressed gas to the hyperextended region in order to open air passages to allow aspiration.
Claim 18
Dependent Claim
24 words
15 . A method as in claim 14 , wherein the gas is selected from the group consisting of air, heliox, helium, or nitrogen.
References Cited (Backward Citations)
US5611336A
Cited
US5707352A
Cited
US6729334B1
Cited
US6261238B1
Cited
US5957919A
Cited
US6287290B1
Cited
US20020077593A1
Cited
US6527761B1
Cited
US20020185135A1
Cited
US20050145253A1
Cited
US6941950B2
Cited
US20030127090A1
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.