41 results about "Calcified lesion" patented technology

A medical device may include an elongated body having a distal elongated body portion and a central longitudinal axis. The medical device may include a balloon positioned along the distal elongated body portion. The balloon may be configured to receive a fluid to inflate the balloon such that an exterior balloon surface contacts a calcified lesion within a patient's vasculature. The medical device may include one or more pressure wave emitters positioned along the central longitudinal axis of the elongated body. The one or more pressure wave emitters may be configured to propagate at least one pressure wave through the fluid to fragment the calcified lesion. At least one pressure wave emitter may include an optical fiber configured to transmit laser energy into the balloon. The laser energy may be configured to create a cavitation bubble in the fluid.

The invention relates to a cavity targeted pulse therapy device, belongs to the technical field of medical instruments, and solves the problems that in the prior art, a shock wave balloon catheter is poor in passing ability, and calcification lesions which cannot be passed by the balloon catheter cannot be effectively treated. The device comprises a catheter partially penetrating into the body of a patient, the catheter comprises a balloon, a shock wave generator and a directional reinforcing component, the shock wave generator and the directional reinforcing component are arranged in the balloon, the shock wave generator is arranged in front of the directional reinforcing component or arranged in the directional reinforcing component, and the directional reinforcing component shrinks along with expansion of the balloon. By arranging the directional reinforcing component, the reverse shock wave generated by the shock wave generator is reflected and then superposed with the forward shock wave energy, so that the energy loss can be reduced, the forward impact force can be remarkably improved, and the treatment effect can be improved.

A medical device may include an elongated body, a balloon positioned at a distal portion of the elongated body, and one or more pressure-wave emitters positioned along a central longitudinal axis of the elongated body within the balloon. The one or more pressure-wave emitters may be configured to propagate pressure waves radially outward through the fluid to fragment a calcified lesion at the target treatment site. The at least one of the one or more pressure-wave emitters may comprise an electronic emitter including a first electrode and a second electrode. The first electrode and the second electrode may be arranged to define a spark gap between the first electrode and the second electrode, and the second electrode may comprise a portion of a hypotube.

Disclosed is an intravascular calcification lesion ultrasonic-powered rotary grinding device. The technical problem to be solved is to improve the safety of surgeries and reduce costs. In the present invention, a rotary grinding head is provided, and from the proximal end to the distal end, an ultrasonic motor system, a first-order transmission acceleration mechanism, a second-order transmission acceleration mechanism, and a rotary grinding head, which are connected in sequence, are provided. The rotary grinding head has a rotating speed of 60,000 rad / min to 120,000 rad / min. Compared with the prior art, the present invention adopts an ultrasonic motor to convert electrical energy into rotational mechanical energy, to drive the transmission acceleration mechanism to achieve the rotation of the rotary grinding head, and is used for dredging or improving severely narrow and severely calcified or fibrotic atherosclerotic lesions in coronary arteries. The rotary grinding head has low transmission noise in high-speed rotation, reducing the frictional heat retained in a human body caused by rotary grinding, reducing the amount of cooling and lubricating solution input into the human body, and reducing the metabolic burden on human kidneys. The present invention has safety, reliability, a simple structure, and low costs.

Provided are a catheter (1) for treating coronary artery and peripheral artery calcification lesions. A calcification lesion tube (7) is fixedly connected to the rear end of the catheter, a cleaning tube (6) is fixedly connected to the rear end of the calcification lesion tube (7), and a guide rod (4) is fitted and connected to the interior of the catheter (1). When a stent mesh (2) is sleeved on the surface of a shock wave balloon (3), a connecting rod (24) may drive a fitting plate (31) and a rubber base (32) to enter the interior of a connecting base (26), such that the fitting plate (31) may be fitted into the interior of a fitting base (25) to connect and use the connecting base (26) and the connecting rod (4), which can increase a friction force between the connecting rod (4) and the connecting base (26), and can allow the stent mesh (2) to be better connected and used with the shock wave balloon (3). When the shock wave balloon (3) drives the stent mesh (2) to expand, the stent mesh (2) may fit and support an affected area of a patient; when the shock wave balloon (3) contracts, the connecting rod (4) may be separated from the connecting base (26), such that the shock wave balloon (3) and the stent mesh (2) are relatively stable when used in a sleeving manner.

A medical energy guide wire comprises a head end and a guide wire pushing rod, an energy discharge electrode assembly is axially arranged at the far end of the guide wire pushing rod, the guide wire pushing rod is of a cavity structure, the cavity structure forms a liquid inlet channel, the far end of the guide wire pushing rod is a hollow-out section of the guide wire pushing rod of a hollow-out structure, and a liquid inlet is formed in the near end of the guide wire pushing rod. The mode that the electrode ring and the guide wire are combined is adopted, a shock wave emission channel is established, a shock wave emission path of the energy guide wire takes the guide wire as the axis, shock waves of the energy guide wire form a passage capable of transmitting energy after liquid injection, energy is emitted to the periphery of the electrode, the caliber of a calcification narrow channel is expanded, calcification lesions are loosened, and the calcification effect is improved. The energy can cover a wider lesion area and act on the lesion area more evenly, local damage to the blood vessel wall is reduced, large-range calcification lesions can be treated more effectively, the strength and direction of shock waves can be better controlled in the operation process, the success rate of an operation is remarkably increased, and the operation time of the operation is shortened.

Various embodiments of systems, methods, and devices are provided for the controlled operation of an endovascular spallation system for destroying calcified lesions within an anatomical conduit. More specifically, control mechanisms are disclosed for managing and / or providing and / or terminating the supply of electrical energy to generate an electrical arc between a pair of spaced electrodes immersed within a contained fluid.

A medical energy guide wire comprises a head end and a guide wire pushing rod, an energy discharge electrode assembly is axially arranged at the far end of the guide wire pushing rod, the guide wire pushing rod is of a cavity structure, the cavity structure forms a liquid inlet channel, the far end of the guide wire pushing rod is a hollow-out section of the guide wire pushing rod of a hollow-out structure, and a liquid inlet is formed in the near end of the guide wire pushing rod. The mode that the electrode ring and the guide wire are combined is adopted, a shock wave emitting channel is established, a shock wave emitting path of the energy guide wire takes the guide wire as the axis, the shock wave emits energy to the periphery of the electrode through a passage which is formed after liquid injection and can transmit energy, the caliber of a calcification narrow channel is expanded, calcification lesions are loosened, and the calcification effect is improved. The energy can cover a wider lesion area and act on the lesion area more evenly, local damage to the blood vessel wall is reduced, large-range calcification lesions can be treated more effectively, the strength and direction of shock waves can be better controlled in the operation process, the success rate of an operation is remarkably increased, and the operation time of the operation is shortened.

An ultrasound diagnostic apparatus includes an ultrasound transmission and reception unit that transmits and receives ultrasound waves to and from a subject and that generates a reception signal, an ultrasound information generation unit that generates a plurality of types of ultrasound information based on the reception signal, a detection and measurement unit that detects and measures a lesion based on the plurality of types of ultrasound information, and a lesion / risk information analysis unit that analyzes a state of the lesion based on a measurement result obtained by the detection and measurement unit. The detection and measurement unit includes at least one of a set of a mass lesion detection unit and a mass lesion measurement unit, or a set of a calcified lesion detection unit and a calcified lesion measurement unit.

An ultrasound diagnostic apparatus includes an ultrasound transmission and reception unit that transmits and receives ultrasound waves to and from a subject and that generates a reception signal, an ultrasound information generation unit that generates a plurality of types of ultrasound information based on the reception signal, a detection and measurement unit that detects and measures a lesion based on the plurality of types of ultrasound information, and a lesion / risk information analysis unit that analyzes a state of the lesion based on a measurement result obtained by the detection and measurement unit. The detection and measurement unit includes at least one of a set of a tumorous lesion detection unit and a tumorous lesion measurement unit, a set of a fibrotic lesion detection unit and a fibrotic lesion measurement unit, a set of a calcified lesion detection unit and a calcified lesion measurement unit, or a set of a fatty liver detection unit and a fatty liver measurement unit.

To provide a medical device which executes treatment on a calcification plaque lesion in a blood circulatory system of a patient.SOLUTION: The medical device may comprise an elongate body, a balloon positioned at a distal portion of the elongate body, and one or more pressure wave emitters positioned along a central longitudinal axis of the elongate body within the balloon. The one or more pressure wave emitters may be configured to propagate pressure waves radially outward through a fluid to break up calcified lesions at a target treatment site. At least one of the one or more pressure wave emitters may comprise an electron emitter comprising a first electrode and a second electrode. The first electrode and the second electrode may be arranged to define a spark gap between the first electrode and the second electrode, and the second electrode may comprise a part of a hypotube.SELECTED DRAWING: Figure 1

The application discloses a calcification elimination system for vascular calcification lesions, and relates to the technical field of medical calcification elimination devices, which comprises a multi-cavity catheter, an ultrasonic conducting wire and a filter screen. A broken balloon is arranged on the outer wall of the multi-cavity catheter. The multi-cavity catheter comprises a suction cavity, a first filling cavity, a conducting wire cavity and a wire-retracting cavity, which all extend along the length direction. A suction hole is arranged on the distal end side wall of the suction cavity. The ultrasonic conducting wire is partially arranged in the conducting wire cavity. The proximal end of the ultrasonic conducting wire is connected with an ultrasonic energy source. The ultrasonic conducting wire has a spiral section, which is sleeved on the outside of the broken balloon. The filter screen is located on the distal end side of the broken balloon. The filter screen is connected with the distal end wall of the suction cavity. The outer edge of the filter screen is connected with a wire-retracting wire. The proximal end of the wire-retracting wire extends to the proximal end of the multi-cavity catheter through the wire-retracting cavity. The application can completely break the plaque, ensures complete breaking of the plaque and improves the breaking efficiency. In addition, the application avoids the problem of vascular thermal damage caused by the local concentration of ultrasonic energy.

The present application provides a shock wave balloon catheter device, which comprises a catheter body and a balloon connected with the distal end of the catheter body, the catheter body has a liquid passage cavity extending along the axial direction of the catheter body, and the inner cavity of the balloon is connected with the liquid passage cavity; the balloon is provided with a first shock wave emitting element for releasing axial impact wave along the axial direction of the balloon and a second shock wave emitting element for releasing radial impact wave along the radial direction of the balloon, the first shock wave emitting element and the second shock wave emitting element are electrically connected with a high-voltage generator, and the first shock wave emitting element is located in the distal end of the balloon. The shock wave balloon catheter device can release impact wave along the axial direction and the radial direction of the balloon, so as to cope with various complex calcified lesions when applied to the treatment of calcified lesions in blood vessels.

The utility model relates to a detachable papillary balloon and balloon catheter, including inner layer balloon, outer layer balloon, convex part structure, the fluid passage is formed between outer layer balloon, inner layer balloon, is provided with the hole on outer layer balloon, the convex part structure includes convex part main part, barb, drug loading membrane, the hole of outer layer balloon is blocked up with convex part main part being connected on outer layer balloon, the barb is connected on convex part main part, the drug loading membrane is coated on convex part main part and / or barb, when fluid acts on convex part main part through fluid passage, hole, convex part main part can be separated from outer layer balloon. The utility model utilizes the feature that the convex part structure is less in contact with calcified lesion or narrow site, plays the pressure amplification effect, and better expands and crushes plaque, through the separation of the convex part structure and the balloon, the separated convex part structure is anchored in the vascular intima, thereby continuously administering, short residence time, long administration duration, and better treatment effect.

A multi-modality catheter is configured to treat a calcified lesion of a body lumen. The multi-modality catheter includes an integrated intravascular lithotripsy balloon and second treatment balloon. The intravascular lithotripsy balloon includes a shock wave emitter to produce a shock wave for modifying the calcified lesion. The second treatment balloon is configured to treat the calcified lesion.

Included in the present disclosure is a medical device, including an elongated body. In some embodiments, the medical device includes a balloon positioned at a distal portion of the elongated body, the balloon configured to receive a fluid to inflate such that an exterior surface of the balloon is configured to contact an interior surface of a target treatment site within a vasculature of a patient. According to some embodiments, the balloon is configured to transition between an uninflated state and an inflated state. When the balloon is in the uninflated state, the balloon may be pleatless. In some embodiments, the medical device includes one or more pressure-wave emitters positioned along a central longitudinal axis of the elongated body within the balloon, the one or more pressure-wave emitters configured to propagate pressure waves radially outward through the fluid to fragment a calcified lesion at the target treatment site.

The application discloses a kind of coronary angiography calcification identification method, system and storage medium based on deep learning, it is related to medical cardiovascular image processing technical field.The present application comprises the following steps: the comprehensive evaluation of different blood vessel angiography projection position of the to-be-tested coronary artery;According to the CT angiography, mark the calcification lesion on the original digital subtraction angiography image independently;Using U-net neural network combined with focal loss function learning and identifying the marked calcification lesion;The U-net neural network output result is input into the LSTM network to calculate the calcification score.The present application improves the accuracy of coronary artery calcification detection and improves the prediction performance of machine learning algorithm.

Various embodiments of systems, methods, and devices for controlled operation of an IVL for disrupting a calcified lesion in an anatomical conduit are provided. More specifically, control arrangements are disclosed that relate to managing and / or providing electrical energy to generate an arc between a set of spaced apart electrodes disposed within a fluid-filled balloon to produce a stable and constant or slightly increasing pressure output within at least 300 voltage pulses. The disclosed control arrangement further determines whether the arc is successfully generated.

1. The name of the design product: Shockwave balloon main machine. 2. The use of the design product: used for adult patients to pretreat and balloon dilate the calcified lesions of the primary coronary artery before stent implantation. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.

The invention discloses a spiral cutting microcatheter for coronary angulation calcification lesion, which comprises a catheter main body and cutting blades, a multi-head spiral groove is arranged on the peripheral surface of the middle section of the catheter main body, and a plurality of cutting blades are embedded in each spiral groove at intervals along the extension direction of the spiral groove. The length direction of each cutting blade is roughly consistent with the thread direction of the position where the cutting blade is located, the top end of each cutting blade does not exceed the peripheral face of the catheter where the cutting blade is located, the passing ability is improved through a spiral structure, and the cutting blades are used for cutting calcified plaques. Compared with a common micro-catheter, the spiral cutting micro-catheter has a longer thread lead, a thicker outer diameter and a deeper spiral groove, and by means of the spiral structure, the micro-catheter can rotate through a calcification angulation lesion. Meanwhile, the blade is embedded in the spiral groove, the calcification lesion can be cut, the calcification lesion can be effectively expanded, and passing of subsequent instruments and stent implantation are facilitated.

The utility model relates to an intervention catheter and an intervention system for calcification lesion microneedle puncture. The interventional catheter solves the technical problem that an existing interventional catheter is unreasonable in design. The interventional catheter for calcification lesion microneedle puncture comprises a catheter main body, wherein an infusion cavity, a positioning cavity and a cable cavity are formed in the catheter main body at intervals; the infusion balloon is connected to the outer side of the catheter body in a sleeving mode and connected with the infusion cavity, and the infusion balloon comprises arc-shaped convex-face balloon bodies arranged at intervals in the circumferential direction, infusion elastic balloon bodies connected with the adjacent arc-shaped convex-face balloon bodies and capable of protruding out of the outer walls of the arc-shaped convex-face balloon bodies, and micro-needle puncture faces arranged on the outer walls of the infusion elastic balloon bodies; the two positioning balloons are arranged on the two sides of the infusion balloon in a spaced mode and communicated with the positioning cavity. According to the utility model, the infusion balloon is controlled to be relatively closed through the two positioning balloons, meanwhile, the aim that the infusion balloon is attached to a vascular lesion position is achieved, the administration rate is controlled, and quantitative and accurate drug delivery is realized.

The application relates to a rolling membrane catheter including at least one transducer (e.g., a pressure wave generator). The present application also relates to a method of treating a calcification lesion in a blood vessel using such a catheter.

The invention provides a shock wave guiding device which is used for guiding shock waves released from a discharge hole of an electrode assembly, the guiding device is made of a material with acoustic impedance of 1.4-1.6 Mrayls, a guiding channel is arranged in the guiding device, the guiding channel is provided with a shock wave inlet and a shock wave outlet, and the shock wave inlet is communicated with the shock wave outlet. And the shock wave inlet is used for sealing and butting a discharge hole of the electrode assembly, so that shock waves released from the discharge hole are led in from the shock wave inlet and led out from the shock wave outlet. The invention further provides a shock wave balloon catheter comprising the shock wave guiding device. By arranging the guide device, shock waves released from the discharge hole can be directionally guided, so that the impact direction of the shock waves can be changed according to treatment requirements, and the balloon catheter can be suitable for treatment of different positions and different types of calcification lesions.

The invention discloses an expandable rotary cutting device for treating vascular calcification lesion, and relates to the technical field of medical instruments, the expandable rotary cutting device comprises a rotary cutting drill bit, a guide wire, a suction catheter, an optical fiber group, a saline infusion tube and a transmission shaft which are coaxially assembled, and the rotary cutting drill bit is provided with a guide wire hole, cutting teeth, an expandable blade, an expansion guide groove and a suction blade. By integrating multiple functions of plaque rotary cutting, active suction, saline irrigation and the like, most plaque types are solved, and compared with the tedious processes of replacing an expansion instrument after rotary cutting and removing chippings by depending on additional equipment in the prior art, the number of instrument exchange times is reduced, the operation time is shortened, and the operation efficiency is improved. Meanwhile, the vascular wall injury risk caused by repeated instrument access to the blood vessel is avoided.

The application provides a scoring guide wire, a scoring balloon assembly and an interventional device. The scoring guide wire comprises a guide wire shaft and a cutting unit. The cutting unit has an expanded state and a compressed state. The distal end of the cutting unit is fixed to the guide wire shaft, and the proximal end is an expandable ring structure. When the scoring guide wire is combined with a balloon catheter, the distal end of at least part of the balloon catheter enters the interior of the cutting unit through the ring structure. The scoring guide wire of the application is provided with a cutting unit, which is used in combination with a balloon catheter to achieve the function of cutting the balloon. Since the scoring guide wire is separated from the balloon body, the passability and flexibility of the product are better than those of the cutting balloon and other products. When applied to the treatment of moderate calcification lesions in intracranial blood vessels, it is not easy to cause vascular injury and reduce surgical complications. For severe calcification lesions of cardiovascular and peripheral blood vessels, the expansion of plaques can be achieved without the need for additional use of a CTO balloon for pre-expansion, thereby reducing the cost and difficulty of the operation.

A medical device may include an elongated body having a distal elongated body portion and a central longitudinal axis. The medical device may include a balloon positioned along the distal elongated body portion. The balloon may be configured to receive a fluid to inflate the balloon such that an exterior balloon surface contacts a calcified lesion within a patient's vasculature. The medical device may include one or more pressure wave emitters positioned along the central longitudinal axis of the elongated body. The one or more pressure wave emitters may be configured to propagate at least one pressure wave through the fluid to fragment the calcified lesion. At least one pressure wave emitter may include an optical fiber configured to transmit laser energy into the balloon. The laser energy may be configured to create a cavitation bubble in the fluid.

Various embodiments of the systems, methods and devices are provided for breaking up calcified lesions in an anatomical conduit. More specifically, an electrical arc is generated between two spaced-apart electrodes disposed within a fluid-filled balloon, creating a subsonic pressure wave. In some embodiments, the electrodes comprise a plurality of points that allow the electrical arc to form at any one of the plurality of points to, among other things, extend the electrode life.

The utility model relates to a flexible electrode shock wave catheter system which comprises a catheter and a flexible electrode structure, the flexible electrode structure is wound on the catheter, and the flexible electrode structure comprises a first insulating substrate layer, a first conducting layer formed on the first insulating substrate layer, a second insulating substrate layer and a second conducting layer formed on the second insulating substrate layer. The first insulating substrate layer is located below the second insulating substrate layer, the first conductive layer and the second conductive layer are each provided with an anode conductive part and a cathode conductive part, the anode conductive parts correspond to the cathode conductive parts up and down, and the anode conductive parts and the cathode conductive parts of the second insulating substrate layer and the second conductive layer are provided with through upper discharge holes. And the positive conductive part and the negative conductive part can form conductive breakdown at the upper discharge hole. According to the utility model, the overall flexibility is good, the occupied space is small, and meanwhile, the stability and reliability between the electrodes are ensured without arranging a lead structure; the two layers of electrodes work cooperatively to generate stronger and more concentrated shock waves, so that the treatment effect on calcification lesions is improved.

An ultrasound diagnostic apparatus includes an ultrasound transmission and reception unit that transmits and receives ultrasound waves to and from a subject and that generates a reception signal, an ultrasound information generation unit that generates a plurality of types of ultrasound information based on the reception signal, a detection and measurement unit that detects and measures a lesion based on the plurality of types of ultrasound information, and a lesion / risk information analysis unit that analyzes a state of the lesion based on a measurement result obtained by the detection and measurement unit. The detection and measurement unit includes at least one of a set of a tumorous lesion detection unit and a tumorous lesion measurement unit, a set of a fibrotic lesion detection unit and a fibrotic lesion measurement unit, a set of a calcified lesion detection unit and a calcified lesion measurement unit, or a set of a fatty liver detection unit and a fatty liver measurement unit.

The application discloses a ring-patterned balloon catheter and relates to the technical field of medical devices, which comprises a catheter, and a balloon with a hollow structure is integrally formed at one end of the catheter; the surface of the balloon is provided with multiple ring patterns and smooth sections; the multiple ring patterns and the multiple smooth sections are arranged in an alternating manner along the axial direction of the catheter, and a space is left between two adjacent ring patterns; when the mutually spaced ring patterns are expanded, a spaced radial pressure can be provided to calcified blood vessels, so that an extrusion crushing force is generated to the position of the calcified blood vessels. The surface of the catheter is provided with ring patterns after being punched open, the ring patterns are arranged in an alternating manner according to a rule, the protruding ring patterns can give greater radial pressure to the blood vessels when the catheter is used to expand the narrow blood vessels, and the ring patterns can form an extrusion crushing effect to the calcified lesions; meanwhile, the balloon can release paclitaxel drugs through a drug coating in the blood vessels, so that the risk of blood vessel restenosis is minimized.