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US 2025/0144323 A1Published application
Insufflation Apparatus with Novel Pressure Measurement
AssigneeW.O.M. World of Medicine GmbH
InventorsHenrik Stier, Jan-Hendrik Carstens
Life of this patent
Estimating the term…
Abstract
The present invention relates to an insufflator with a novel pressure measuring device for minimally invasive surgery. The new device allows to reliably measure the pressure in the body cavity while at the same time ensuring that the gas supply lines are free of occlusions.
Claims8
An insufflator for minimally invasive surgery, comprising:
- a) a gas connection for a gas cylinder or domestic gas (1)
- b) a first pressure and flow control unit (2) equipped with a proportional valve,
- c) a supply line (3) with a cross-section of 5.5 to 15 mm, configured for a gas flow of 0-50 L/min at 2-3 bar, having a first controllable valve (4), a first gas pressure sensor (5), a first gas flow sensor (6) and a connection to a first trocar (7) into a cavity (8),
- d) a sensor line (9) with a cross-section of 2 to 5 mm having an optional throttle (10), configured for a gas flow of less than 1 L/min at 2-3 bar, having a second controllable valve (11) and a second gas pressure sensor (12) and a connection to a second trocar (13) into the cavity (8),
- e) a computing unit (14) for controlling the insufflation and evaluating the measurement data of the first gas pressure sensor (5) and the second gas pressure sensor (12),
- wherein the sensor line (9) is connected to the first pressure and flow control unit (2), and wherein the second controllable valve (11) allows a pulsatile gas flow controlled by the computing unit (14) into the cavity (8).
3 more elements
An insufflator for minimally invasive surgery, comprising:
- a) a gas connection for a gas cylinder or domestic gas (1)
- b) a first pressure and flow control unit (2) equipped with a proportional valve,
- c) a supply line (3) with a cross-section of 5.5 to 15 mm, configured for a gas flow of 0-50 L/min at 2-3 bar, having a first controllable valve (4), a first gas pressure sensor (5), a first gas flow sensor (6) and a connection to a first trocar (7) into a cavity (8),
- d) a sensor line (9) with a cross-section of 2 to 5 mm configured for a gas flow of less than 1 L/min at 2-3 bar and with an optional throttle (10), with a second controllable valve (11) and a second gas pressure sensor (12) and a connection to a second trocar (13) into the cavity (8),
- e) a computing unit (14) for controlling the insufflation and evaluating the measurement data of the first gas pressure sensor (5) and the second gas pressure sensor (12).
2 more elements
An insufflator for minimally invasive surgery, comprising:
- a) a gas connection for a gas cylinder or domestic gas (1)
- b) a first pressure and flow control unit (2) equipped with a proportional valve,
- c) a supply line (3) with a cross-section of 5.5 to 15 mm, configured for a gas flow of 0-50 L/min at 2-3 bar, having a first controllable valve (4), a first gas pressure sensor (5), a first gas flow sensor (6) and a connection to a first trocar (7) into a cavity (8),
- d) a sensor line (9) with a cross-section of 2 to 5 mm having an optional throttle (10), configured for a gas flow of less than 1 L/min at 2-3 bar, having a second gas pressure sensor (12) and a connection to a second trocar (13) into the cavity (8),
- e) a computing unit (14) for controlling the insufflation and evaluating the measurement data of the first gas pressure sensor (5) and the second gas pressure sensor (12),
- wherein the computing unit (14) is configured to correct the pressure losses of the supply line (3) with the first trocar (7) and of the sensor line (9) with the second trocar (13) and to compare the corrected measurement values of the first pressure sensor (5) and the second pressure sensor (6).
3 more elements
Dependencies are inferred from the claim text.