84 results about "Subsegmental pulmonary artery" patented technology

A catheter system for treating pulmonary emboli has an multi-channel access port for establishing and maintaining communication with the vascular system and provide guidance for endovascular catheterization. One catheter may traverse the port and extend through the heart to the pulmonary arteries to inject lysing agents, contrast media, medicaments and to remove blood clots. Another catheter may traverse the port and extend through the vena cava to other parts of the venous tree to supply the same agents and to remove blood clots there. A third catheter may telescope over the treatment catheter through the vena cava and occlude the affected vein. Gas pervious tubules on the third catheter provide oxygen enrichment of the venous blood.

In a preferred embodiment a radiologist traces the pulmonary artery and pulmonary veins visible in a set of CT images and identifies the arteries and veins. The radiologist's identification of the pulmonary arteries and pulmonary veins is then received by an image analyzer and combined with the analyzer's identification of the pulmonary arteries to form a combined identification; and the analyzer then reviews this combined identification of the pulmonary arteries to detect any pulmonary embolisms. The radiologist's identification of any pulmonary embolisms is compared with the analyzer's identification of any pulmonary embolisms to determine if there are any embolisms identified by the analyzer that were not identified by the radiologist.

As described herein vascular anchoring systems are used to position an implant in a vascular area such as a bifurcated vasculature with relatively high fluid flow, for instance, in an area of a pulmonary artery with associated left and right pulmonary arteries. Implementations include an anchoring trunk member having a first anchoring trunk section and a second anchoring trunk section. Further implementations include a first anchoring branch member extending from the anchoring trunk member. Still further implementations include a second anchoring branch member extending from the anchoring trunk member.

The invention provides a self-adaptive plugging device. The self-adaptive plugging device is characterized by comprising a first plugging disc and a second plugging disc which are used for plugging blood flows of coloboma positions, the first plugging disc is connected with one end of a connecting waist portion which can be stretched and deflected, and the other end of the connecting waist portion which can be stretched and deflected is connected with the second plugging disc. According to the self-adaptive plugging device, the connecting waist portion can be stretched and deflected; by means of stretching and deflection of the connecting waist portion, the functions of adjusting the length and the angle of deflection of the plugging device can be achieved; generally, certain included angles exist between aortas and pulmonary arteries, and under the action of the adjustable waist portion, the plugging discs on the two sides can be well attached to the wall faces of catheters of the aortas and the pulmonary arteries respectively, and the main performances such as the rebound resilience, the fixity and the plugging effect of the plugging device are significantly improved.

As described herein, vascular anchoring systems are used to position an implant in a vascular area such as a bifurcated vasculature with relatively high fluid flow, for instance, in an area of a pulmonary artery with associated left and right pulmonary arteries. Implementations include an anchoring trunk member having a first anchoring trunk section and a second anchoring trunk section. Further implementations include a first anchoring branch member extending from the anchoring trunk member. Still further implementations include a second anchoring branch member extending from the anchoring trunk member.

Minimally invasive systems and methods are described for measuring pulmonary circulation information from the pulmonary arteries. A transbronchial Doppler ultrasound catheter is advanced through the airways and in the vicinity of the pulmonary artery. Doppler ultrasound energy is sent through the airway wall and across the pulmonary artery to obtain velocity information of blood flowing through the artery. The velocity information is used to compute pulmonary circulation information including but not limited to flowrate.

The invention discloses a safety improved pulmonary artery stent and a pulmonary artery valve replacement device. The safety improved pulmonary artery stent comprises a pipe-shaped supporting net stent and two flaring sections which are connected with two axial ends of the supporting net stent; every flaring section is connected with an end portion of the supporting net stent through a fixing part; one ends of the flaring sections, which are back to the supporting net stent, is provided with a plurality of wave crests which are provided with smooth edges. The pulmonary artery valve replacement device comprises the safety improved pulmonary artery stent and a prosthesis valve which is arranged inside the pulmonary artery stent. According to the safety improved pulmonary artery stent, the flaring sections are connected with the supporting net stent through the fixing parts, namely, the flaring sections and the supporting net stent are connected in a detachable mode, the safety is improved, the utilization is flexible, and meanwhile machining difficulty is reduced.

As described herein, vascular anchoring systems are used to position an implant in a vascular area such as a bifurcated vasculature with relatively high fluid flow, for instance, in an area of a pulmonary artery with associated left and right pulmonary arteries. Implementations include an anchoring trunk member having a first anchoring trunk section and a second anchoring trunk section. Further implementations include a first anchoring branch member extending from the anchoring trunk member. Still further implementations include a second anchoring branch member extending from the anchoring trunk member.

As described herein vascular anchoring systems are used to position an implant in a vascular area such as a bifurcated vasculature with relatively high fluid flow, for instance, in an area of a pulmonary artery with associated left and right pulmonary arteries. Implementations include an anchoring trunk member having a first anchoring trunk section and a second anchoring trunk section. Further implementations include a first anchoring branch member extending from the anchoring trunk member. Still further implementations include a second anchoring branch member extending from the anchoring trunk member.

As described herein vascular anchoring systems are used to position an implant in a vascular area such as a bifurcated vasculature with relatively high fluid flow, for instance, in an area of a pulmonary artery with associated left and right pulmonary arteries. Implementations include an anchoring trunk member having a first anchoring trunk section and a second anchoring trunk section. Further implementations include a first anchoring branch member extending from the anchoring trunk member. Still further implementations include a second anchoring branch member extending from the anchoring trunk member.

The invention discloses a pulmonary artery stent capable of subsequent dilation and a conveyor thereof. Dilation of the pulmonary artery stent is realized through cylindrical dilation of each element node and cylindrical dilation of each element node is realized through deformation in wavy expansion form, and as deformation in wavy expansion form is free from structure constraint, the pulmonary artery stent can continue dilating after cylindrical dilation of each element node, thus ensuring the pulmonary artery stent to realize subsequent dilation along with pulmonary artery diameter to ensure the stenosed pulmonary artery to retain sufficient support force. The pulmonary artery stent of above structure has slight radial retraction and axial retraction. Besides, partial troughs of each element node have larger amplitude and the peaks of the adjacent element nodes at one side of the troughs of the element nodes have large amplitude, thus being capable of shortening the gaps between two adjacent element nodes. Node rods with larger length can be arranged and have larger width to ensure flexible uniform distribution of the pulmonary artery stent.

A system and apparatus comprising a multi-sensor catheter for right heart and pulmonary artery catheterization is disclosed. The multi-sensor catheter comprises multi-lumen catheter tubing into which at least three optical pressure sensors, and their respective optical fibers, are inserted. The three optical pressure sensors are arranged within a distal end portion of the catheter, spaced apart lengthwise within the distal end portion for measuring pressure concurrently at each sensor location. The sensor locations are configured for placement of at least one sensor in each of the right atrium, the right ventricle and the pulmonary artery, for concurrent measurement of pressure at each sensor location. The sensor arrangement may further comprise an optical thermo-dilution sensor, and another lumen is provided for fluid injection for thermo-dilution measurements. The catheter may comprise an inflatable balloon tip and a guidewire lumen, and preferably has an outside diameter of 6 French or less.

In a preferred embodiment a radiologist traces the pulmonary artery and pulmonary veins visible in a set of CT images and identifies the arteries and veins. The radiologist's identification of the pulmonary arteries and pulmonary veins is then received by an image analyzer and combined with the analyzer's identification of the pulmonary arteries to form a combined identification; and the analyzer then reviews this combined identification of the pulmonary arteries to detect any pulmonary embolisms. The radiologist's identification of any pulmonary embolisms is compared with the analyzer's identification of any pulmonary embolisms to determine if there are any embolisms identified by the analyzer that were not identified by the radiologist.