63 results about "Endovascular therapy" patented technology

A method and apparatus of providing endovascular therapy. The steps include arranging optical fibers within a catheter, the catheter having a tip whose length is at least 1 cm and whose diameter of less than 1 millimeter, connecting an excimer laser to the optical fibers; and delivering laser energy from the excimer laser in excess of 60 fluence at 40 Hertz through the optical fibers. The delivering of the laser energy may be to non-calcified or calcified deposits of an atherosclerotic lesion to ablate the same. The method also includes the step of inserting the catheter through an artery by pushing the same until the tip is in within laser energy striking distance of the atherosclerotic lesion.

The present invention provides for devices and methods for providing endovascular therapy, including facilitating establishment of vascular access, placement of endovascular sheaths, catheter tip localization, and administration of vascular occlusion. The inventions includes a vessel cannulation device, an expandable sheath, an occlusion catheter, and a localizer each of which may be provided separately or used as part of a system.

The present invention provides for devices and methods for providing endovascular therapy, including facilitating establishment of vascular access, placement of endovascular sheaths, catheter tip localization, and administration of vascular occlusion. The invention includes a vessel cannulation device, an expandable sheath, an occlusion catheter, and a localizer each of which may be provided separately or used as part of a system. One embodiment of the invention is a vessel cannulation device including: a housing having a distal end with a distal tip and a proximal end; a guidewire lumen passing through the housing and at least the distal tip; a sensor coupled to the guidewire lumen; and an advancing member, which is configured for advancing at least one of a guidewire or a sheath and which is operably coupled to the sensor.

The present invention provides methods and devices for treating endovascular disease. Vibrational energy is delivered to change compliance and increase permeability at the treatment area. To improve clinical outcomes, one or more therapeutic drugs may be delivered to the treatment area.

An endovascular laser treatment device for causing closure of a blood vessel uses an optical fiber adapted to be inserted into a blood vessel. An inner sleeve is arranged around a distal portion of the optical fiber core such that both distal ends of the inner sleeve and the optical fiber core form an enlarged light emitting face. The enlarged emitting face provides substantially lower power density while providing the same amount of total energy during a treatment session. An outer sleeve arranged around the inner sleeve acts as a spacer to position the light emitting face away from an inner wall of the blood vessel. The enlarged light emitting face and the outer sleeve acting as a spacer reduces the possibility of thermal run-away and device damage, and reduce the possibility of vessel perforations, leading to less bruising, post-operative pain and other clinical complications. In yet another aspect of the present invention, a spacer comprises an inner sleeve and an outer sleeve both arranged around a distal portion of the core to prevent the laser light from traveling laterally and to position the light emitting face away from an inner wall of the vessel. The inner sleeve can be a heat resistive material such as ceramic and the outer sleeve can be, for example, a metallic sleeve to provide structural integrity and strength to the distal section of the treatment device.

The present invention provides for devices and methods for providing endovascular therapy, including facilitating establishment of vascular access, placement of endovascular sheaths, catheter tip localization, and administration of vascular occlusion. The invention includes a vessel cannulation device, an expandable sheath, an occlusion catheter, and a localizer each of which may be provided separately or used as part of a system. One embodiment of the invention is a vessel cannulation device including: a housing having a distal end with a distal tip and a proximal end; a guidewire lumen passing through the housing and at least the distal tip; a sensor coupled to the guidewire lumen; and an advancing member, which is configured for advancing at least one of a guidewire or a sheath and which is operably coupled to the sensor.

The invention discloses a stent distracting vena cava membrane breaker applied to endovascular therapy. In an interventional therapy membrane Budd-Chiari syndrome method used in recent years, a hollow puncture needle is used, and the principle is: breaking a membrane with the puncture needle, making a guide wire pass through the membrane, and guiding a saccule to expand for eliminating a narrow section, or directly breaking the membrane with the guide wire. The key point of the technology is that: a needle head is aligned with the center of the membrane with appropriate force. The defect is that: if the needle head is not aligned with the center but is deviated towards the periphery, and excessive force is applied, blood vessels are broken, and hydropneumothorax or cardiac tamponade which endangers the life of a patient is caused by wrong insertion of the needle head into a pleura or a pericardium. The invention provides a stent which can contract and expand is arranged on the head part of a puncture needle sheath catheter on the basis of the conventional puncture needle, and stronger support force and more accurate directional property are provided for a membrane breaking needle under the coaction of the unfolded stent and a blood vessel cavity. By adopting the stent distracting vena cava membrane breaker, the defects of the prior art can be overcome, and a good membrane breaking effect is achieved.

The invention discloses a vena cava membrane puncturing device used for endovascular therapy. In recent years, the method for interventional therapy of the membrane-type Budd-Chiari syndrome (BCS) utilizes a hollow membrane puncturing needle and adopts the principle that a membrane is punctured by the membrane puncturing needle, a guide wire penetrates through the membrane to guide a saccule to dilate so as to eliminate a stenotic segment, or the membrane is directly punctured by the guide wire. The technology has the key point that the needle head is aligned to the center of the membrane and proper force is required, while the defect lies in that if the direction of the needle head does not align to the center but deviate to the periphery and the force is overlarge, a blood vessel can be punctured, the membrane puncturing needle is mistakenly punctured into the pleura or the heart sac, causing unnecessary injury, and a saccule catheter is required to be changed for secondary membrane dilatation after the membrane puncturing. The invention provides a vena cava membrane puncturing dilator, which is characterized in that a dilatable saccule with fixing and orienting functions is added on the periphery of the tip of traditional membrane puncturing needle, and can overcome the defects of high difficulty of the membrane puncturing technology and high risk and achieve better effects of one-time membrane puncturing and membrane dilatation.

The invention provides an intravascular optical coherence tomography laser ablation catheter which adopts all-fiber array type arrangement and double-hollow type design and is used for imaging and real-time ablation treatment of intravascular lesions. The catheter comprises a catheter head end, a catheter wall part, a catheter cavity part and a catheter tail end. The circular aperture in the center-most portion of the catheter is a guide wire aperture allowing the catheter to flexibly pass through the guide wire. An annular hole is formed in the periphery of the circular hole in the center of the catheter and serves as a normal saline injection hole, and normal saline injection or introduction of other miniature temperature measuring equipment is allowed. A plurality of optical fibers used for optical coherence tomography and laser ablation are sequentially arranged in the catheter in an adjacent concentric circle array mode. A miniature spring and a flexible material are arranged inside and outside the catheter wall to control the bending angle of catheter imaging and treatment. By means of the design of the catheter, the imaging speed in the blood vessel can be increased, and imaging in the blood vessel and treatment in the blood vessel are better combined.

The present invention provides methods and devices for treating endovascular disease. Vibrational energy is delivered to change compliance and increase permeability at the treatment area. To improve clinical outcomes, one or more therapeutic drugs may be delivered to the treatment area.

A device and method for intravascular treatment of atherosclerotic plaque prior to balloon angioplasty which microperforates the plaque with small sharp spikes acting as serrations for forming cleavage lines or planes in the plaque. The spikes may also be used to transport medication into the plaque. The plaque preparation treatment enables subsequent angioplasty to be performed at low balloon pressures of about 4 atmospheres or less, reduces dissections, and avoids injury to the arterial wall. The subsequent angioplasty may be performed with a drug-eluting balloon (DEB) or drug-coated balloon (DCB). The pre-angioplasty perforation procedure enables more drug to be absorbed during DEB or DCB angioplasty, and makes the need for a stent less likely. Alternatively, any local incidence of plaque dissection after balloon angioplasty may be treated by applying a thin, ring-shaped tack at the dissection site only, rather than applying a stent over the overall plaque site.

The present disclosure relates to medical devices including occlusion devices, clot retrieval systems, and stents. More particularly, the medical devices described herein measure characteristics for intravascular treatment sites. The medical devices may include pressure sensors and/or length sensors that may be used to determine the effectiveness of the medical devices during or after treatment. These sensors may be particularly helpful when used on an occlusion device or a clot removal device.

A light-based method of endovascular treatment, in particular, of pathologically altered blood vessels. Provided are a Method of Endovascular Light Treatment and a corresponding Endovascular Light Application Device.

A device and method for intravascular treatment of atherosclerotic plaque prior to balloon angioplasty which microperforates the plaque with small sharp spikes acting as serrations for forming cleavage lines or planes in the plaque. The spikes may also be used to transport medication into the plaque. The plaque preparation treatment enables subsequent angioplasty to be performed at low balloon pressures of about 4 atmospheres or less, reduces dissections, and avoids injury to the arterial wall. The subsequent angioplasty may be performed with a drug-eluting balloon (DEB) or drug-coated balloon (DCB). The pre-angioplasty perforation procedure enables more drug to be absorbed during DEB or DCB angioplasty, and makes the need for a stent less likely. Alternatively, any local incidence of plaque dissection after balloon angioplasty may be treated by applying a thin, ring-shaped tack at the dissection site only, rather than applying a stent over the overall plaque site.