961results about "Suction drainage systems" patented technology

Disclosed is a negative pressure suction sheath, comprising a sheath tube (1), a negative pressure connector (2), and a dilator (3). The negative pressure connector (2) comprises a main channel cavity (201) and a negative pressure suction channel cavity (202) located on one side of the main channel cavity (201). A proximal end of the sheath tube (1) is connected to a distal end of the main channel cavity (201). The dilator (3) is inserted from a proximal end of the main channel cavity (201) and extends out of a distal end of the sheath tube (1) and is detachably connected to the main channel cavity (201). A side channel port (205) is formed on one side of the main channel cavity (201), and the negative pressure suction channel cavity (202) is in communication with the side channel port (205). A cavity wall of the main channel cavity (201) is further provided with a pressure regulating port (203). The pressure regulating port (203) is arranged corresponding to the side channel port (205) or is located at one end of the side channel port (205) distal to the sheath tube (1), and the magnitude of the negative pressure in the sheath tube (1) can be adjusted by adjusting the opening size of the pressure regulating port (203).

A dynamic aspiration system includes a connecting tube, a vacuum source, a pressure source, an aspiration catheter, a first controllable valve to control a level of negative pressure provided by the vacuum source, a second controllable valve to control a level of positive pressure provided by the pressure source, pressure sensors, and a controller. The controller modulates the controllable valves to generate pressure pulses, determines, for each of the pressure pulses, a degree of success corresponding to a change in a flow in the aspiration catheter or the connecting tube responsive to the pressure pulse, identifies one or more first pressure pulses determined to have the highest degrees of success, and modulates the controllable valves to generate the first pressure pulses in one or more pressure pulse cycles.

A method for capturing dislodged vegetative growth during a surgical procedure is provided. The method includes maneuvering, into a circulatory system, a first cannula having a distal end and an opposing proximal end, such that the first cannula is positioned to capture the vegetative growth en bloc. A second cannula is positioned in fluid communication with the first cannula, such that a distal end of the second cannula is situated in spaced relation to the distal end of the first cannula. A suction force is provided through the distal end of the first cannula so as to capture the vegetative growth. Fluid removed by the suction force is reinfused through the distal end of the second cannula. Subsequent to becoming dislodged, the vegetative growth is captured by the first cannula. A method for capturing a vegetative growth during removal of a pacemaker lead is also provided.

Described herein are systems, devices, and methods for methods for autologous blood transfusion. For example, an apparatus may comprise a fluid conduit configured to receive a volume of fluid from a patient and a container fluidically coupled to the fluid conduit. The container may define a reservoir configured to receive the volume of fluid from the fluid conduit. The apparatus may include a vacuum conduit couplable to a vacuum source, a vent configured to vent air into the reservoir, and at least one valve configured to couple the reservoir to the vacuum conduit to generate negative pressure within the reservoir such that the volume of fluid is drawn into the reservoir, and decouple the reservoir from the vacuum conduit while coupling the reservoir to the vent such that air is vented into the reservoir at an average rate that prevents turbulent movement of the volume of fluid within the reservoir.

The present invention relates generally to improved systems and methods for removing undesirable material residing in vessels. More specifically, the present invention relates to systems and methods for using at least one cannula to remove substantially en bloc, from a site of obstruction or interest, undesirable material without fragmentation and without excessive fluid loss.

Methods for aspiration to remove thrombus / clot material using a system configured to remove, filter and return clot. These methods allow the removal of clot material using a fluidically-driven aspiration device when attached to an aspiration catheter and proximate to obstructive clot material. A fluidic actuator drives an aspirator, which may be automatically controlled to apply a vacuum in a pattern to enhance clot removal and collection from the body as well as improve blood return using the same closed system. The fluidic actuator may direct the aspirated blood through a filter and deaerator to allow the filtered blood to be returned to the patient.

The speed-adjustable negative pressure drainage device comprises a drainage tube, a bottle body, a cover body and a negative pressure source connector, the cover body is rotated to drive a top ring cambered surface protrusion to jack up a bead body, a through hole is opened according to the angle gradient, external air enters dilution negative pressure, and linear speed regulation without negative pressure source adjustment is achieved; the bead body periodically opens and closes the through holes to form pulsating type instantaneous suction force, so that the adhesive force between blood clots and the tube wall is destroyed, and blockage is actively prevented; the gradient section of the drainage tube accelerates liquid flow through abrupt drop to generate local negative pressure to pull rear liquid flow; the upper convex hulls enlarge the sectional area of a pipe cavity before sharp drop, decelerate liquid flow and form a vortex region, so that blood clots are separated and deposited due to inertia, and liquid-solid layering is realized; the device has the functions of mechanical blockage prevention, precise pressure control and overload protection, the clinical blockage rate is reduced from 30% to 5% or below, power support is not needed, the device is suitable for postoperative drainage scenes such as the abdominal cavity and the thoracic cavity, and the medical operation load and the complication risk of a patient are remarkably reduced.

Clot material may be removed from a patient and separated from blood so that the blood may be collected using an efficient dual-stroke technique. The methods described herein withdraw clot and blood from a patient during a first stoke of a pump at a first rate, filter the blood to remove clot, and drive the filtered blood into a collection chamber at a second rate that is different from the first rate. The first rate may be optimized to disrupt and remove clot, while the second rate may be optimized to move the blood without damaging, e.g., lysing, the blood.

Blood circuit apparatuses having one or more pumps that are configured to provide a first, positive, pressure and a second, negative, pressure may couple to an aspiration catheter and are coupled to a blood return circuit including a blood return line are also connected to a controller that is configured to independently control the movement of the positive and negative pressure. These apparatuses may be used to remove clot material, filter the clot material, and return the filtered blood to the a chamber for immediate or later return to the patient.

The invention relates to the technical field of drainage control, in particular to an intelligent cerebrospinal fluid drainage rate and pressure cooperative control system and method. The system comprises a drainage pipeline module, a positioning adjustment module, an intelligent pump control module, a monitoring sensing module, a cooperative control module and a man-machine interaction module, and can be used for establishing a cerebrospinal fluid drainage channel and being connected with a drainage bag; a laser positioning pen fixed on the infusion rod emits a laser beam which is horizontal to a preset drainage plane and adjusts the hanging height; an infusion pump and a pump body controller drive cerebrospinal fluid to flow according to set parameters and generate flow velocity, flow and drainage time control signals, meanwhile, real-time intracranial pressure data, real-time flow and flow velocity data and physical sign data are collected, and a drainage height adjusting instruction or a pump control parameter adjusting instruction is generated; cooperative control over the drainage rate and the intracranial pressure is achieved, and system operation parameters, patient monitoring data and the drainage state are displayed. The drainage device can accurately control the drainage amount of cerebrospinal fluid.

This invention relates to the field of nasal aspirator technology, and more specifically, to a nasal aspirator and its method, comprising: a nasal plug suction head unit and a negative pressure suction unit. The nasal plug suction head unit includes: a suction head body, which has an suction port for inserting into the nasal cavity to aspirate nasal secretions and an exhaust port for connecting to the negative pressure suction unit. The nasal aspirator and its method of this invention adjust the suction force of the suction head body through the negative pressure suction unit, making it easier to control the speed or force of aspirating nasal secretions, reducing discomfort inside the nasal cavity. Compared to oral nasal aspirators, this invention provides better suction and reduces the risk of infection. The structural design of the nasal plug suction head unit in this invention effectively prevents the backflow of nasal secretions, preventing secondary infection caused by backflow, and reducing discomfort caused by irritation to the nasal cavity or throat.

A method includes receiving at an aspiration module of a pump assembly an input associated with a catheter parameter of a catheter coupled to the pump assembly. An aspiration profile associated with the catheter parameter is selected via the aspiration module from a list of preset aspiration profiles associated with different catheters and include upper and lower pressure limits, an aspiration speed, and an infusion speed. A first signal is sent to actuate the pump based on the aspiration profile to operate the pump in a first mode. A pressure signal is received at the aspiration module and a second signal is sent to actuate the pump based on the aspiration profile to operate the pump in a second mode, in which the pump is cycled between the aspiration speed and the infusion speed such that the catheter pressure cycles between the upper pressure limit and the lower pressure limit.

The application discloses a thoracic surgery puncture drainage device, relates to the technical field of medical puncture drainage, and comprises a drainage needle, a drainage tube communicated with the drainage needle, and a negative pressure component communicated with the drainage tube. The negative pressure component comprises an inflatable rubber tube and a shell. An adjusting assembly matched with the inflatable rubber tube is installed on the shell, and the adjusting assembly is used for driving the inflatable rubber tube to stretch and deform. The thoracic surgery puncture drainage device can adaptively drain liquid according to the fluctuation frequency and fluctuation degree of the thoracic cavity when draining the thoracic cavity effusion, effectively reduces the damage to the thoracic cavity, can pressurize and dredge when the drainage tube is slightly blocked, can backwash and dredge when the drainage tube is highly blocked, realizes the integration of dredging and drainage, avoids the backwash and dredging air from entering the drainage device to cause drainage infection, has higher safety, and is more convenient to operate.

The invention discloses a thoracic surgery postoperative drainage monitoring data processing method and a thoracic surgery postoperative drainage monitoring data processing system. The method comprises the following steps: synchronously acquiring thoracic respiration dynamic characteristics of a patient and fluid dynamic characteristics of a thoracic closed drainage system through a data acquisition module; the central processing server establishes a time sequence mapping relationship between the two, performs feature fusion analysis, and calculates to obtain a thoracic cavity-pipeline coupling efficiency index; performing logic judgment on the postoperative recovery state of the patient on the basis of the index, and identifying a chest-pipeline fluid transmission state including breathing work limitation, drainage channel blockage and pleural cavity air leakage; and dynamically generating a grading equipment response strategy including adjusting training intensity and triggering pipeline maintenance early warning or analgesia intervention according to an identification result. According to the method, accurate recognition and closed-loop management of postoperative complications are achieved by quantitatively evaluating the linkage relation between respiration driving and drainage response.

A negative pressure wound therapy system includes a wound dressing, at least one pump fluidly coupled to the fluid interface, a pressure sensor fluidly coupled to the wound dressing, a control housing, and an electrical coupler. The wound dressing includes a sealing layer, an absorbent layer adjacent to the sealing layer, and a fluid interface attached to at least one of the sealing layer or the absorbent layer. The at least one pump is configured to apply negative pressure to the fluid interface to draw fluid from the wound dressing via the fluid interface. The pressure sensor is configured to detect a fluid pressure of the wound dressing. The control housing is remote from the wound dressing. The electrical coupler is configured to removably connect the control housing to the at least one pump.

The invention relates to the technical field of sputum suction devices, and discloses a novel respiratory department nursing sputum suction device which comprises a collecting bottle, a filter plate arranged in an inner cavity of the collecting bottle, a sealing cover in threaded connection to the top of the collecting bottle, and a negative pressure hose and an adsorption hose which are fixedly connected to the inner surfaces of the two sides of the sealing cover respectively. The outer end surface of the sealing cover penetrates to the bottom of the filter plate; the anti-blocking mechanism comprises a suction assembly used for forming negative pressure in the negative pressure hose and sucking sputum through the adsorption hose, a cleaning assembly capable of automatically cleaning the filter plate when the bottom of the filter plate is blocked by the sputum, and a dismounting assembly capable of conveniently dismounting and maintaining the filter plate. The sputum suction device has the beneficial effects that by arranging the anti-blocking mechanism, sputum can be prevented from entering the negative pressure hose through the filter plate in the sputum suction process, the sputum at the bottom of the filter plate can be automatically swept off when the filter plate is blocked, the disassembly and assembly process of the filter plate can be greatly simplified, and the operation burden of medical staff is reduced when the filter plate needs to be deeply maintained.

The invention aims to provide a portable automatic adjustment negative pressure sputum suction device based on multi-parameter monitoring, which comprises a negative pressure sputum suction device main body used for generating adjustable negative pressure and connected to an airway of a patient through a sputum suction pipe; the respiratory rate sensor is mounted at the inlet of the sputum suction tube and used for monitoring the respiratory rate of the patient in real time; the sputum suction resistance sensor is mounted in the sputum suction tube and used for monitoring the resistance change in the tube in the sputum suction process in real time; the sputum viscosity sensor is arranged between the sputum suction tube and the sputum collection bottle and is used for monitoring the viscosity of sputum in real time; the control unit controls the negative pressure sputum suction device main body to output corresponding negative pressure; the sputum suction device aims at monitoring the respiratory rate, the sputum suction resistance and the sputum viscosity of a patient in real time, a dynamic negative pressure adjusting mode is adopted, the sputum suction efficiency can be improved, and meanwhile damage of excessive suction to an airway can be avoided.

The invention discloses a siphon type gastrointestinal nursing pressure reducer with a pressure regulating function. Comprising a support, a sealing box is installed at the top of the support, a drainage tube is connected to one side of the sealing box, a pressure adjusting structure is installed at the end of the drainage tube, the pressure adjusting structure is connected with a trigger structure, the trigger structure is located in the sealing box, and a conveying tube is connected to the other side of the sealing box. Through the arrangement of the drainage tube, the pressure regulating structure and the triggering structure, the device can be driven without additional electrical equipment; liquid in the gastrointestinal tract is efficiently led out through the siphon effect, so that the energy-saving and environment-friendly effects are achieved, in the using process, after the liquid in the gastrointestinal tract is completely led out, the pressure in the system can be naturally reduced, at the moment, the pressure adjusting structure cannot be triggered, and then the triggering structure is driven to stop the siphon effect.

Systems and methods of in situ pressure control at an anatomical environment during a procedure are disclosed. An exemplary irrigation and suction system comprises a user input configured to receive from a user a desired pressure to be applied to the anatomical environment, or a desired flow condition corresponding to the desired pressure. The system comprises a pressure sensor to sense a pressure at or near the anatomical environment, and a control module to adjust one or more of an irrigation flow rate or a suction flow rate of at least one working channel of a medical device to maintain the pressure of the anatomical environment at substantially a level of the desired pressure, or to maintain the desired flow condition in the working channel during the procedure.

Systems and methods of in situ unclogging a working channel in a medical device during a procedure are disclosed. An exemplary unclogging system comprises a flow sensor to sense a flow rate through a working channel, and a control module to detect a channel state indicating a presence or absence of clogging based on the flow rate. In the presence of channel clogging, the control module can control one or more of an irrigation source or a suction source to provide respectively irrigation fluid or suction pressure to unclog the obstructed channel. The control module can adjust one or more of an irrigation flow rate or a suction flow rate through the working channel to maintain a desired pressure of the anatomical environment at the anatomical site, or to maintain a desired flow condition in the working channel, during the procedure.

The invention discloses a self-adaptive wearing and monitoring method of an intelligent drainage monitoring system, and relates to the technical field of medical intelligent wearing, and the method comprises the steps: collecting the drainage part data of a patient through multi-modal biological characteristics, optimizing the wearing parameters through a particle swarm algorithm, and driving a shape memory polymer to adjust the equipment fitting degree, biochemical indexes, pressure and flow of drainage liquid are detected in real time through a micro-fluidic chip and various sensors, intelligent early warning of abnormity is achieved in combination with a self-adaptive neural network, parameters such as drainage negative pressure are automatically adjusted according to physiological signals of a patient, risks are predicted through a digital twinborn model, and a maintenance scheme is generated. According to the intelligent drainage monitoring system, self-adaptive wearing is achieved, and the comfort level of a patient is improved; real-time accurate monitoring and intelligent early warning are achieved, and medical safety is guaranteed; drainage parameters are automatically adjusted according to patient states, and treatment efficiency is improved; the intelligent dredging and anti-infection functions are achieved, the medical risk and cost are reduced, and the clinical application value is high.

The invention discloses a closed thoracic drainage bottle facilitating drainage, and belongs to the field of medical instruments. The device comprises a water seal bottle, a negative pressure adjusting bottle, a water seal pipe and a chest drainage pipe, and is additionally provided with an adjusting assembly and a liquid collecting assembly. The liquid collecting assembly comprises a first liquid collecting bottle and a second liquid collecting bottle which are symmetrical; the adjusting assembly comprises a fixing plate and four sets of two-way valves, the fixing plate is provided with symmetrical connectors which are connected with the liquid collecting bottle and the chest drainage tube respectively, and the two forked ends of the water sealing tube penetrate through the corresponding two-way valve connectors and stretch into the liquid collecting bottle. Seamless switching of the double liquid collection bottles can be achieved by controlling opening and closing of different two-way valves, and drainage does not need to be interrupted when the liquid collection bottles are replaced. The device is easy and convenient to operate, the drainage efficiency is improved, and drainage continuity and safety are guaranteed.

The present invention relates generally to improved systems and methods for removing undesirable material residing in vessels. More specifically, the present invention relates to systems and methods for using at least one cannula to remove substantially en bloc, from a site of obstruction or interest, undesirable material without fragmentation and without excessive fluid loss.

A device and method of use for preventing or treating postpartum uterine bleeding or hemorrhage of a patient. The device includes a suction tube having a distal end portion at which an aperture or an array of plural apertures is located and extending about the periphery of the distal portion. A sealing member having an apex and flexible sidewall is mounted on the suction tube so that a portion of its sidewall can be brought into engagement with tissue of the uterus. Suction from a vacuum source is applied to a proximal end portion of the suction tube to apply suction via the aperture(s) to the interior of the patient's uterus. The suction tube may include an illumination system for illuminating the interior of the patient's vagina.

Systems and methods of in situ unclogging a working channel in a medical device during a procedure are disclosed. An exemplary unclogging system comprises a flow sensor to sense a flow rate through a working channel, and a control module to detect a channel state indicating a presence or absence of clogging based on the flow rate. In the presence of channel clogging, the control module can control one or more of an irrigation source or a suction source to provide respectively irrigation fluid or suction pressure to unclog the obstructed channel. The control module can adjust one or more of an irrigation flow rate or a suction flow rate through the working channel to maintain a desired pressure of the anatomical environment at the anatomical site, or to maintain a desired flow condition in the working channel, during the procedure.

The invention discloses a peritoneal drainage flushing device based on multi-dimensional parameter monitoring and a negative pressure regulation and control system, and belongs to the technical field of peritoneal drainage. The peritoneal drainage flushing device and negative pressure regulation and control system based on multi-dimensional parameter monitoring comprises a device support, a multi-channel rotary valve and two negative pressure pumps, a flow guide pipe and a backflow pipe are arranged between the two negative pressure pumps and the multi-channel rotary valve, and pipeline detection modules are installed on the flow guide pipe and the backflow pipe. The peritoneal drainage device solves the problems that an existing peritoneal drainage device is not ideal in treatment effect and affects the treatment effect when a drainage tube is blocked, early intervention is carried out by adjusting a negative pressure pump, a multi-channel rotary valve and a three-way electromagnetic valve, targeted treatment is automatically triggered at the early stage of complications through continuous and multi-dimensional monitoring, and the treatment effect is effectively improved. The tube blocking rate, the abdominal infection rate and the abdominal hypertension syndrome occurrence rate are remarkably reduced, the pain of a patient is relieved, the recovery time is shortened, and personalized and self-adaptive adjustment is carried out according to the physical state of the patient.

To provide a suction and irrigation system for maintaining in situ pressure of an anatomical environment at an anatomical site under control during an endoscopic procedure.SOLUTION: Systems and methods for providing in situ pressure control in an anatomical environment during a procedure are disclosed. The exemplary irrigation and aspiration system includes a user input configured to receive from a user a desired pressure to be applied to the anatomical environment or a desired flow condition corresponding to the desired pressure. The system includes a pressure sensor for sensing pressure in or near an anatomical environment during a procedure, and a pressure sensor for sensing a pressure in the anatomical environment during the procedure, or a control module for adjusting one or more of an irrigation flow rate or an aspiration flow rate of at least one working channel of the medical device to maintain a desired flow condition in the working channel.SELECTED DRAWING: Figure 1

The application discloses a thoracic cavity closed drainage bottle, which comprises a collecting bottle, a water seal bottle and a pressure measuring bottle, a liquid level alarm assembly and a fan assembly are arranged in the collecting bottle, a connecting pipe is arranged at the top end of the collecting bottle, and a dredging assembly is arranged in the connecting pipe; the liquid level alarm assembly is hung in the collecting bottle; the fan assembly is arranged below the bottom end of the connecting pipe which extends into the collecting bottle; the dredging assembly comprises a pressure increasing part, first opening and closing valves, second opening and closing valves, third opening and closing valves and a side pipe; the first opening and closing valves and the second opening and closing valves are arranged at the top end and the bottom end of the connecting pipe; the pressure increasing part is arranged outside the top end of the connecting pipe, and the side pipe is arranged outside the bottom end of the connecting pipe; and the third opening and closing valves are arranged in the side pipe. The application can monitor the amount of thoracic fluid in the collecting bottle, can determine the tendency of active bleeding in time, can give a prewarning when the amount of thoracic fluid in the collecting bottle is about to be full, and can automatically dredge when the pipeline is blocked during the drainage process, so that the tube pulling operation is not needed, and the pain of the patient is reduced.

The invention disclosed in this document presents a novel direct in-scope suction system designed for the retrieval of calculus fragments within the body. This system comprises two key components: a calculus fragments retrieval device and a pump unit. The calculus fragments retrieval device features a body with a single working channel that includes both an irrigation port and a suction port, which are connected to respective irrigation and suction pumps via elastomer-based rubber tubes. This setup allows for the controlled infusion of saline solution into the body lumens during lithotripsy procedures, ensuring clear visibility and fragment clearance. The retrieval device includes a trigger lever connected to a pincher tab. When the operator presses the trigger lever, the suction port is opened by releasing the pinched suction tube, increasing pressure inside the body.

Medical devices and systems are described. The medical device may include a handle that includes a hub, a grip portion, and an arm. The hub may define a lumen having a proximal opening. The arm may extend proximally from the hub and may be coupled to a member slidable or rotatable relative to the arm. The grip portion may extend transverse to the lumen of the hub. The grip portion may be configured to receive a palm of a user's hand while a thumb of the user's hand controls sliding or rotation of the member.