9 results about "Occlusion catheter" patented technology

The utility model discloses a blood return prevention monitoring device for a PICC (Peripherally Inserted Central Catheter), and belongs to the technical field of PICC. Comprising a blocking catheter, the two ends of the blocking catheter are fixedly connected with an injection connecting pipe and a catheter connecting pipe respectively, the injection connecting pipe is used for being connected with an injector, the catheter connecting pipe is used for being connected with a venous indwelling catheter, a one-way valve structure is arranged in the blocking catheter, and when blood returns to the venous indwelling catheter, reverse pressure exists in the catheter, and the blood returns to the catheter. A blocking ball is pushed by resistance of a second spring to seal an injection connecting pipe, injection one-way conduction and blood return blocking effects are formed, a piston block extrudes a first spring along an L-shaped cavity due to reverse pressure in a catheter during blood return, a push rod is forced to push a resistor block to move along a resistor disc, the actual length of the two cables electrically connected with the resistor disc is reduced, and the service life of the two cables is prolonged. The resistance monitor can monitor the blood return phenomenon of the venous indwelling catheter, and can send out a blood return alarm instruction in time to remind medical staff to deal with the blood return phenomenon in time.

The utility model discloses a kind of gastric cavity plugging catheters of gastrostomy in the medical instrument technical field, the device increases plugging balloon and sealing clamping piece, can be held by inside and outside, hold stomach wall and skin to position the device, while plugging balloon seals and isolates the puncture of stomach wall inside gastric cavity, effectively avoid gastric juice to flow out, avoid gastric juice to overflow along the puncture and cause skin burning;Positioning baffle is also increased, can be unfolded inside duodenum, positioning baffle can position nutrition tube, avoid nutrition tube to slide and separate, can also effectively block pylorus, effectively avoid enteric digestive juice to enter stomach, and do not hinder gastric juice to flow into intestine normally, and by pressure relief port and pressure relief pipe, stomach is conveniently decompressed, effectively avoid that pressure is too high and nutrition liquid is refluxed to esophagus.

Various systems and methods are provided for reducing pressure at an outflow of a duct, such as the thoracic duct or the lymphatic duct, for example, the right lymphatic duct. A catheter system can be configured to be at least partially implanted within a vein of a patient in the vicinity of an outflow port of a duct of the lymphatic system. The catheter system includes first and second selectively deployable restriction members each configured to be activated to at least partially occlude the vein within which the catheter is implanted and to thus restrict fluid within a portion of the vein. The catheter system includes an impeller configured to be driven by a motor to induce a low pressure zone between the restriction members by causing blood to be pumped through the catheter when the restriction members occlude the vein.

A medical liquid delivery system (10) delivers a collection object (L) generated in a living body (B) to a medical bag (16) through a tube (14). The medical liquid delivery system (10) is provided with an occluding part (22) capable of blocking the circulation of the collection object (L) by occluding an intermediate part (143) of the tube (14). The medical liquid delivery system (10) further comprises a first state monitoring part (241) that monitors the state of the tube (14) at a first position (P1), and a second state monitoring part (242) that monitors the state of the tube (14) at a second position (P2). On the basis of the difference between a first state parameter at the first position (P1) and a second state parameter at the second position (P2), a control part (263) releases the blocked state of the tube (14) by the occluding part (22).

Systems and methods for delivery of therapeutic materials into targeted region of a vessel may include controlling the pressure within an occluded region. In any of these methods and apparatuses the method may include controlling the size and / or pressure of the occluded region by controlling a lateral expansion of one or both occluding balloons. In some cases one or both balloons may include a lateral expansion region configured to adjust the length of one or both balloons to controllably adjust the size of (and / or pressure within) an occluded region. In some cases this may be used to occlude / exclude one or more anatomical regions.

An occlusion catheter system is provided for at least partial occlusion of a vessel. The occlusion catheter system includes a proximal hub having an inflation connection port and an inflation pathway. An inflation catheter member is fluidly connected to the proximal hub. An occlusion balloon has a proximal balloon end and a distal balloon end, the proximal balloon end being fluidly connected to the inflation catheter member. A distal catheter member is connected to the distal balloon end and includes an atraumatic tip on a distal end thereof, the atraumatic tip having a substantially circular profile in one configuration. The occlusion balloon, the inflation catheter member and the distal catheter member have a greatest outer diameter of less than 7 Fr in an uninflated condition.

An interventional ostium occlusion catheter includes a catheter tube with at least one port at a first end, a tip at a second end, and a central lumen, with a positioning component and an occlusion component on the surface of the catheter tube close to the tip. A method of coronary intervention using the catheter includes maneuvering the catheter to an ostium; inserting the catheter into a coronary vessel; activating the positioning component and the occlusion component; and delivering an infusion via the lumen. An interventional system for improving management of ischemic cardiac tissue during acute coronary syndromes includes the catheter; a blood infusion device that delivers controlled reperfusate; and a ventricular unloading device that manipulates myocardial oxygen demand in a coronary chamber. The operator can mitigate reperfusion-related and oxygen-related tissue injury by precisely modulating oxygen re-exposure when re-establishing flow and when using a ventricular unloading device.

A balloon catheter includes an outer tube that has an inner surface and an inflation lumen and an inner tube that is disposed within the inflation lumen. The balloon catheter also includes a collar that has a proximal end coupled to a distal end of the outer tube, and a distal end. The collar is coupled to an edge of the distal end or the inner surface of the outer tube. The balloon catheter further includes a luminal space, which is defined by a space between the outer surface of the inner tube and the collar, and a balloon. The balloon has a proximal end coupled to the collar and a distal end coupled to the inner tube.

The utility model relates to a kind of bronchus blocking catheter of anti-displacement blockage, the top end of the blocking catheter movably connects with the fixed strip for sealing and tightening cover tight component to blocking catheter;The clamping device includes the clamping component for clamping and fixing bronchus in cover tight device, and the driving component for driving two clamping components to move in opposite directions is arranged in cover tight device. By cover cap insertion to the top end of blocking catheter, then by two rotating fixed strip is clamped in clamping strip, cover cap can be covered and tightened, three elastic strips can be used to clamp and fix bronchus, then by hand wheel driving bidirectional screw rod is rotated, two threaded sleeve plates can be made along the two threaded portions on the rod body of bidirectional screw rod to bronchus close, while fixed sleeve plate can move along guide rod, and bronchus is clamped and fixed, to prevent bronchus from the risk of loosening and falling.