725results about "Medical insufflators" patented technology

An access device for a minimally invasive procedure can include a port body defining an instrument channel for a medical instrument, a radial extension extending at least partially outward from the body in a radial direction. The radial extension can extend from a distal end of the port body. The radial extension can define an imaging device cavity defined therein spaced from the port body and opening distally from the radial extension. The imaging device cavity can be configured to receive an imaging device therein for providing images within a field of view that is at least partially distal of the port body.

A device for ablating target tissue of a patient with electrical energy is provided. An elongate shaft includes a proximal portion and a distal portion, and a radially expandable element is attached to the distal portion. An ablation element for delivering electrical energy to target tissue is mounted to the radially expandable element. The device can be constructed and arranged to ablate the duodenal mucosa of a patient while avoiding damage to the duodenal adventitial tissue. Systems and methods of treating target tissue are also provided.

A device for ablating target tissue of a patient with electrical energy is provided. An elongate shaft includes a proximal portion and a distal portion, and a radially expandable element is attached to the distal portion. An ablation element for delivering electrical energy to target tissue is mounted to the radially expandable element. The device can be constructed and arranged to ablate the duodenal mucosa of a patient while avoiding damage to the duodenal adventitial tissue. Systems and methods of treating target tissue are also provided.

The invention relates to the technical field of medical instruments, and provides a pneumoperitoneum machine pressure measurement abnormity control method which comprises the following steps: acquiring air inlet pressure, pressure measurement pressure and smoke exhaust pressure; calculating a difference value between the air inlet pressure and the pressure measuring pressure and a difference value between the pressure measuring pressure and the smoke exhaust pressure; when the difference value between the air inlet pressure and the pressure measuring pressure is larger than a first preset difference value and smaller than a second preset difference value, and the difference value between the pressure measuring pressure and the smoke discharging pressure is larger than a third preset difference value and smaller than a fourth preset difference value, the pressure measuring pressure is selected as display pressure; otherwise, starting a first pressure measurement abnormity detection program. By monitoring the difference value between the air inlet pressure and the measured pressure and the change of the difference value between the measured pressure and the smoke exhaust pressure, pressure monitoring abnormity caused by equipment faults in the operation process can be recognized, the equipment stability is improved, and the operation risk is reduced.

The invention relates to the technical field of medical instruments, and provides a control method, system and device of a pneumoperitoneum machine and the pneumoperitoneum machine. The control method of the pneumoperitoneum machine comprises the following steps that monitoring pressure read by the pneumoperitoneum machine is obtained; when the monitoring pressure is larger than a first pressure threshold value and the maintaining duration is larger than or equal to a first preset duration, the pressure change rate within the first preset duration is obtained; if the pressure change rate is larger than a first pressure change rate threshold value, expected fluctuation is judged, and a first adjusting program is started; and if the pressure change rate is smaller than or equal to the first pressure change rate threshold value, continuous change is judged, and a second adjustment program is started. The reasons of overpressure are distinguished more meticulously according to the pressure change rate, so that different adjusting programs are adopted, the overpressure condition of expected fluctuation can be adjusted in a targeted mode, and the problems that the loss of equipment parts is high, and the time consumed by equipment pressure stabilization is long are solved.

A system for performing minimally invasive procedures in a body lumen of a patient including a flexible catheter having a first lumen configured and dimensioned to receive an endoscope therethrough and a second lumen configured and dimensioned to receive a first flexible tube therethrough. The first flexible tube is movable through the second lumen and has a distal portion including a first curve extending in a first direction with respect to the longitudinal axis and a second curve extending in a second different direction with respect to the longitudinal axis. A retractor system is positioned at a distal portion of the catheter and is movable from a non-expanded insertion position to an expanded position forming an expanded cage to form a larger working space. The distal portion of the first flexible tube is movable within the expanded cage.

Systems and methods for delivering a gas, such as nitric oxide, are provided. In some embodiments, systems and methods are provided for delivering a gas, such as nitric oxide, in the form of nanobubbles and / or a dissolved gas using a liquid medium.

Disclosed herein is a surgical cannula configured as an instrument retaining or centering apparatus, configured for providing insufflation gases to a surgical cavity of a patient (such as the pneumoperitoneum) and allowing insertion of medical instruments into the surgical cavity through the cannula. The cannula can include features to direct gas flow in particular directions to prevent or reduce smoke, fog / condensation, or other unwanted media from contacting a portion of a medical instrument.

A device for ablating target tissue of a patient with electrical energy is provided. An elongate shaft includes a proximal portion and a distal portion, and a radially expandable element is attached to the distal portion. An ablation element for delivering electrical energy to target tissue is mounted to the radially expandable element. The device can be constructed and arranged to ablate the duodenal mucosa of a patient while avoiding damage to the duodenal adventitial tissue. Systems and methods of treating target tissue are also provided.

The invention discloses an endoscope pneumoperitoneum pressure system based on AI image evaluation and an intelligent adjusting method, and the method comprises the steps: 1, obtaining an original image of the abdominal cavity of a patient through CT equipment, carrying out the standardization processing of the original image, generating a standardized CT image data set, and constructing a three-dimensional dynamic model of the abdominal cavity of the patient based on an AI algorithm; in the second stage, quantitative analysis of subcutaneous fat thickness, visceral organ volume and operable space volume is carried out on the three-dimensional dynamic model by adopting an AI segmentation algorithm, and a personalized pneumoperitoneum pressure target value Ptarget and an adjustment threshold range are generated through a machine learning model in combination with basic illness state data of the patient; in the third stage, working data are collected in real time through a built-in sensor of the endoscope system, and the working data are input into the reinforcement learning model to dynamically calculate a pressure adjusting instruction delta P; through deep fusion of the AI technology and system closed-loop control, the intelligent level of the endoscope system is remarkably optimized, good hardware support is provided, and the function of optimizing the operation environment and effect is achieved.

A conduit for transporting medical gas includes an elongated tube, a sheath provided around the elongated tube, and a pair of connectors at opposite ends of the elongated tube. The elongated tube is formed from a breathable material to mitigate condensation within the lumen. During use, water molecules within the lumen of the elongated tube are dissipated by absorption into the breathable material, diffusion through the breathable material, and release into the surrounding air. The breathable material may tend to expand and soften upon absorbing water molecules. Expansion of the elongated tube may be selectively restricted by the sheath. The restriction by the sheath may mitigate softening of the breathable material.

To provide a cannula and / or a medical instrument accessory configured to locally inject gas to a lumen for surgery of a patient (pneumoperitoneum or the like) or discharge the gas from the patient.SOLUTION: A medical instrument accessory includes a body that can be mounted over at least a part of a medical instrument shaft, the body having an inner lumen, a proximal end part, and a distal end part. The distal end part includes an opening, and the distal end part is arranged at an operation end part of the medical instrument or arranged adjacent to it when in use. An outer wall and the lumen of the medical instrument shaft define a gas flow passage. Gas or fluid is released or introduced to the gas flow passage at the distal end part and adjacent to the end part of the medical instrument shaft.SELECTED DRAWING: Figure 3B

The present invention relates to medical tubes and methods of manufacture. A medical tube includes an elongated conduit having a first opening, a second opening, a longitudinal axis, a lumen extending along the longitudinal axis between the first opening and the second opening, and a corrugated wall formed of an extruded material extending between the first opening and the second opening and surrounding the lumen. The wall is stiffer in a first length of the conduit adjacent the first opening than in a second length of the conduit adjacent the second opening. The variable stiffness of the tube wall can improve heat distribution of the tube and improve condensate return into a humidifier that provides humidified gas to the tube.

The present invention relates to a drug delivery device, which is suitable for drug delivery from the nose of a human body. The drug delivery device comprises: a body assembly (20), wherein the body assembly is internally provided with a drug delivery channel extending along the front-rear direction, and a drug spraying hole is formed at the front end of the drug delivery channel; a gas supply device (30) connected to the rear portion of the body assembly, wherein the gas supply device is in fluid communication with the rear end of the drug delivery channel, and is adapted to supply pressurized gas to the drug delivery channel; and a capsule holder (5) arranged within the rear portion of the body assembly, wherein the capsule holder is adapted to accommodate a nasal pharmaceutical agent, and is configured to be in fluid communication with both the rear end of the drug delivery channel and the gas supply device (30).

The utility model relates to an oscillating positive expiration pressure sputum excretion device which comprises a holding shell, a working cavity is formed in the holding shell, an air channel is fixedly installed above the holding shell, a blocking piece is fixedly installed in the air channel, an air inlet is formed in the position, corresponding to the front portion of the blocking piece, of the upper end face of the holding shell, and an air inlet pipe is fixedly installed below the air inlet. An air nozzle is fixedly installed on one side of the tail end of the air inlet pipe, an oscillation box is arranged at the top end of the air nozzle, and an oscillation piece is rotatably installed in the oscillation box. Through the design that the oscillation box is arranged in the working cavity and the oscillation piece is installed in the oscillation box, compared with a traditional oscillation structure with a single-ball blocking structure, the oscillation piece and a cavity separated, the oscillation structure is more stable; the second air outlet for adjusting the air pressure through the adjusting knob is matched with the design of the transparent air flow indicating tube, multi-gear adjustment and visualization of the air pressure are achieved, the water content in exhaled air is effectively reduced through the design that the water vapor filtering cotton is arranged in the blocking cavity, and the service life of the product is prolonged.

In one embodiment, a method for performing meningeal repair includes closing an open meningeal defect with a human umbilical cord meningeal patch.

A medical fluid suspension generating apparatus for performing medical procedures includes a Venturi-agitating tip assembly composed of a multi-channel arrangement at a proximal first end thereof and a tip at a distal second end thereof. The apparatus also includes a compressed medical fluid unit fluidly connected to the multi-channel arrangement at a proximal first end of the Venturi-agitating tip assembly and a medical solution fluidly connected to the multi-channel arrangement at a proximal first end of the Venturi-agitating tip assembly. Pressurized gas, from the compressed medical fluid unit, and the medical solution are combined within the Venturi-agitating tip assembly in a manner generating an enriched medical suspension that is ultimately dispensed from the suspension delivery apparatus.

A leak detecting apparatus (1) for detecting a leak and determining the size of the leak in a suture repaired site (5) of a hollow organ (3), for example, a stomach, in a cavity (7), for example, the peritoneal cavity of a subject comprises a first insufflator (12) for insufflating the hollow organ (3) with a first gas, and a second insufflator (14) for insufflating the cavity (7) with a second gas. A gas detector (18) is provided for detecting the concentration of the first gas in gases exhausted from the cavity (7) through a communicating conduit (35). A flow meter (25) monitors the flow rate of the first gas to the hollow organ (3). First and second pressure sensors (15) and (16) monitor the static pressure of the first and second gases in the hollow organ (3) and the cavity (7), respectively. The apparatus (1) is operable in a first mode and a second mode. In both the first and second modes of operation a microprocessor (50) controls the second insufflator (14) for maintaining the pressure in the cavity (7) at a relatively low predefined pressure, and the first insufflator (12) for maintaining a constant predefined pressure differential between the pressures in the hollow organ (3) and the cavity (7) of approximately 7 mmHg. In the first mode the microprocessor (50) determines the size of the leak as a function of the pressure differential and the concentration of the first gas in the exhaust gases. In the second mode of operation the microprocessor (50) determines the size of the leak as a function of the pressure differential and the flow rate of the first gas to the hollow organ (3) with the hollow organ (3) sealed apart from the sutured site (5).

A valve assembly for a medical device includes a container having a first region and a second region, a first fluid inlet in fluid communication with the first region, a second fluid inlet in fluid communication with the second region, and a piston assembly disposed within the container. The container is configured to store a medicament within the second region, the first fluid inlet is configured to deliver a first portion of the pressurized fluid to the first region at a first pressure level, and the second fluid inlet is configured to deliver a second portion of the pressurized fluid to the second region at a second pressure level lower than the first pressure level. The piston assembly includes a valve configured to move from a first position to a second position in response to movement of the piston assembly relative to the container.

An insufflator (1) for insufflating a peritoneal cavity (2) of a subject (3) comprises a microprocessor (25) operating a flow controller (19) in response to a signal read from a pressure sensor (29) indicative of cavity pressure for insufflating the cavity at a target pressure value. The microprocessor (25) reads a signal from a pressure sensor (37) indicative of the peak airway pressure of a subject, and operates the flow controller (19) and / or a venting valve (33) to reduce the cavity pressure to prevent the peak airway pressure of the subject exceeding a maximum safe peak airway pressure value. The heart rate of the subject (3) is also monitored, and insufflating of the cavity (2) is terminated on the heart rate of the subject falling below a predefined minimum heart rate value. The insufflator (1) may also be configured to monitor the depth of anaesthesia of a subject by monitoring an alternating component of cavity pressure induced in the cavity pressure by ventilating of and / or natural breathing of the subject.

A filter cartridge for a surgical gas delivery system is disclosed which includes a housing having a front end and a rear end and defining a first interior flow path extending downstream from a first inlet at the rear end of the housing to a first outlet at the front end of the housing, and a second interior flow path extending upstream from a second inlet at the front end the housing to a second outlet at the rear end of the housing, a first pleated filter element operatively associated with the first interior flow path, a second pleated filter element operatively associated with the second interior flow path, and a carbon filter disc operatively associated with the second interior flow path and positioned adjacent a downstream side of the second pleated filter element.

Surgical port attachments, adapters, modules, and methods of making and using the same are disclosed. Surgical ports are particularly suitable for cleaning surgical tools operable within body cavities. Surgical port attachments, adapters, modules and methods thereof are also disclosed, which may be adapted to attach to the interior or onto a trocar and used to clean the lens and light source of an endoscope.

A light irradiation device includes first and second light sources to emit first light and second light having mutually different wavelengths, respectively, at timings close to each other regardless of overlap between the first light and the second light, the first light has a wavelength band for inducing destruction of bacteria by damaging a cell as the first light acts on a photosensitizer present in the bacteria, wherein the second light has a wavelength band for inducing the destruction of the bacteria by changing the structure of a genetic material present in the cell of the bacteria, and a dose of the second light source is less than 1 / 10 of a dose of the first light source.

A system is provided for delivering gas to a patient during a medical procedure. The system comprises a heater arranged to heat at least one of the gas and a humidification liquid. The system comprises a controller arranged to control the system according to a first mode during delivery of a first flow rate of gas and a second mode during delivery of a second flow rate of gas. The controller monitors an electrical characteristic of the heater to select the mode of operation and / or to determine an operating state of the system.

A method for automatically detecting a clinically relevant leak and / or inadequate closure following a medical procedure, in a hollow organ residing in the interior volume of a body cavity. The test method includes the steps of: injecting, via an adapted injection element, a specific test gas or a gas mixture containing at least one test gas, into the organ, analyzing the gas mixture and measuring the test gas concentration in the interior volume of the body cavity via an adapted detection element and at least during a measurement window, evaluating the likelihood of the presence of a leak and its degree of severity, by comparing stored data and real-time data with each other. The pressure difference between the interior of the hollow organ(s) and the interior volume of the body cavity is controlled or mastered at least at a given moment during at least one measurement window.

A device for delivering an agent may comprise: a housing defining an enclosure. The housing may be configured to store an agent. The device may further comprise an inlet, in fluid communication with the enclosure, for receiving a flow of pressurized fluid; an outlet in fluid communication with the enclosure; and a filter disposed within the enclosure. Pores of a wall of the filter may be configured such that the fluid is permitted to pass through the pores into a channel defined by an inner surface of the wall. An actuation member may be configured to transition between a first configuration, in which portions of the agent disposed proximally to the actuation member are prevented from passing distally of the actuation member, and a second configuration, in which portions of the agent disposed proximally of the actuation member are capable of passing distally of the actuation member.

Ablation systems and methods include improved methods of generating heated vapor. A vapor ablation system preferably has a controller having a user interface that receives data indicative of a treatment session time, a pump in data communication with the controller, and a catheter having an electrode and in fluid flow communication with the pump. The controller is configured to control the pump to provide fluid to a lumen of the catheter, to cause an electrical current to be delivered to the electrode to heat the fluid in the lumen and convert the fluid to heated vapor, to control the delivery of the fluid and generation of the heated vapor based on the data indicative of the time and without modifying a flow rate of the fluid or a voltage and / or current level of the electrical current based on data from a sensor located in or on the catheter.

Various examples of the disclosed subject matter include systems and methods to control a flowrate of a smoke evacuation system. In one example, a smoke-evacuation system includes an electrosurgical a unit (ESU) to provide electrical power to an electrosurgical tool within a surgical site. A monitoring device measures one or more electrical parameters from the electrosurgical tool and a controller estimates an amount of generated smoke within the surgical site based on the electrical parameters. The controller sets a flowrate of a suction device to remove gases within the surgical site. The flowrate of the removed gases produced is based on the estimated amount of generated smoke. The controller further controls a flowrate of an insufflation gas produced by an insufflation device where the flowrate of the insufflation gas is substantially equal to the flowrate of the gases produced by the suction device. Other systems and methods are disclosed.