23 results about "Heart wall" patented technology

An implantable lead configured to be implanted in an anterior mediastinum of a patient. The implantable lead includes a generator interface and a lead body coupled to the generator interface. The generator interface is configured to couple the implantable lead to a generator of an implantable treatment device. The lead body includes a sternal portion configured to be positioned in the anterior mediastinum to engage a posterior portion of a sternum of the patient, and a heart wall portion configured to be positioned in the anterior mediastinum to engage a heart wall of a heart of the patient. At least one of the sternal portion or the heart wall portion is configured to deliver treatment energy to the heart of the patient.

The present disclosure relates generally to the field of medical devices for delivering artificial chordae tendineae in a patient An anchor for engaging a papillary muscle or heart wall is described, wherein the anchor is movable between a delivery configuration and a deployed configuration. When the anchor is in the delivery configuration the anchor has a first outer dimension and when the anchor is in the deployed configuration the anchor has a second outer dimension. The first outer dimension is smaller than the second outer dimension. The anchor is engageable with a papillary muscle or a heart wall when the anchor is in the deployed configuration. The anchor comprises a plurality of arms coupled at a proximal end thereof to a body portion, at least one arm of the plurality of arms movable between a first position and a second position when the anchor moves from the delivery configuration to the deployed configuration. The plurality of arms each have a distal tip for engaging the papillary muscle or heart wall, wherein as the anchor is moved from the delivery configuration to the deployed configuration, the plurality of arms are movable from an elongated shape to a curved shape.

A cardiac electrode assembly. The inventive electrode assembly includes an active fixation device, such as a helical electrode configured to screw into the myocardium or a vessel wall. The invention also includes an array of two or more reversed tines. The reverse tines bear against the heart wall or vessel wall and inhibit unwanted distal motion of the electrode assembly. Various deployment devices that aid in the installation of the inventive electrode assembly are also described.

A method of estimating a value associated with heart wall tension. The method comprises: using motion data recorded with a sensor in communication with the heart to identify motion in the heart; and estimating a value associated with heart wall tension based on the identified motion in the heart. The motion in the heart that forms the basis of the estimation may be a vibration in the heart wall. A heat monitoring system for carrying out the method of estimating a value associated with heart wall tension comprises a sensor configured to be placed in communication with the heart in order to identify motion in the heart; and a data processing device arranged to receive motion data from the sensor and to then carry out the steps of the method.

The present disclosure relates generally to the field of medical devices for delivering artificial chordae tendineae in a patient. A system for adjusting tension in an artificial chordae tendineae includes an artificial chordae tendineae coupleable between a clip and an anchor. The clip is engageable with a leaflet of a heart valve while the anchor is engageable with a papillary muscle or heart wall. The anchor includes a body portion, and a locking portion coupleable with the artificial chordae tendineae and configured to allow movement of the artificial chordae tendineae in a first direction while preventing movement of the artificial chordae tendineae in a second direction opposite the first direction. An actuator is coupled to the locking portion for selectively releasing the locking portion to enable selective movement of the artificial chordae tendineae in the second direction.

The present invention relates generally to the field of medical devices for delivering artificial chordae tendinae in a patient. A system for adjusting tension in an artificial chordae tendinae includes an artificial chordae tendinae couplable between a clip and an anchor. The clip is engageable with a leaflet of a heart valve and the anchor is engageable with a papillary muscle or heart wall. The anchor includes a body portion and a locking portion couplable with the artificial chordae tendinae and configured to allow movement of the artificial chordae tendinae in a first direction while preventing movement of the artificial chordae tendinae in a second direction opposite the first direction. An actuator is coupled to the locking portion to selectively release the locking portion to enable selective movement of the artificial chordae tendinae in the second direction.

A method for localizing the source of an arrhythmia within a heart wall is disclosed. The method involves accessing an indication of the source location of the arrhythmia within the endocardium. A normal vector is generated that is normal to the endocardium at the source location in the direction of the epicardium layer. An activation vector indicating the direction of electrical force of the heart during an initial stage of depolarization is determined. The depth angle between the normal vector and the activation vector is determined, and the depth of the source location within the heart wall is indicated based on a depth angle.

The application discloses a duck hepatitis virus 1 type DHAV-1 / HNSQ and application thereof, and belongs to the field of animal virology and genetic engineering. The duck hepatitis virus 1 type DHAV-1 / HNSQ has been preserved in the China Center for Type Culture Collection on March 5, 2026, and the preservation number is CCTCC NO:V202622. The VP1 gene of the variant strain has a deletion of three consecutive nucleotides. Animal experiments show that, after the variant strain infects ducklings, in addition to causing typical duck viral hepatitis lesions, the variant strain can also stably cause a new phenotype, such as thinning of the heart wall, reduction of myocardial toughness and liquefaction necrosis of pancreatic tissue, which has never been reported in the prior art, thereby providing important biological materials for effective prevention and control of duck hepatitis and pathogenic mechanism research.

The invention discloses a transapical implantation system of a heart auxiliary pressure pump, relates to the technical field of medical instruments, can solve the problems that the heart wall needs to be cut, the operation process is troublesome and the risk is high when an existing heart auxiliary pressure pump is implanted, and can effectively reduce the implantation difficulty of a pump body assembly compared with the prior art. The embodiment of the invention discloses a transapical implantation system of a heart auxiliary pressure pump, which comprises an outer tube, an inner push tube and a pump body assembly, and the pump body assembly comprises a pump body main body, a turnover paddle structure and a plurality of locking hooks movably connected to the peripheral wall of the pump body main body along the circumferential direction of the pump body main body; bent embedded sections are arranged at the ends, away from the pump body, of the locking hooks, and the bent embedded sections of the multiple locking hooks are all bent clockwise or anticlockwise; a first rotation limiting structure is further arranged on the peripheral wall of the pump body main body, a second rotation limiting structure is arranged at the end of the inner pushing pipe, and the pump body assembly and the inner pushing pipe synchronously rotate along with the first rotation limiting structure and the second rotation limiting structure which are matched with each other.

The application discloses a trans-apical implantation system of a heart auxiliary pressurizing pump and relates to the technical field of medical devices, which can solve the problem that the existing heart auxiliary pressurizing pump implantation needs to cut open the heart wall, the surgical process is troublesome, and the risk is high, and can effectively reduce the implantation difficulty of the pump body assembly compared with the prior art. The trans-apical implantation system of the heart auxiliary pressurizing pump comprises an outer tube, an inner push tube, a pump body assembly, the pump body assembly comprises a pump body main body and a reversible paddle structure, and a plurality of locking hooks are movably connected to the outer peripheral wall of the pump body main body in the circumferential direction; the end, away from the pump body main body, of the locking hook is provided with a bent embedding section, and the bent embedding sections of the plurality of locking hooks are all bent in the clockwise direction or the counterclockwise direction; the outer peripheral wall of the pump body main body is further provided with a first rotation limiting structure, the end of the inner push tube is provided with a second rotation limiting structure, and the pump body assembly and the inner push tube are synchronously rotated through the mutually matched first rotation limiting structure and the second rotation limiting structure.

The invention discloses a core-wall rockfill dam parameterization driving three-dimensional design method based on a 3DE platform. The method comprises the steps that firstly, an original terrain model is imported into a 3DE system (or the original terrain model is created in the 3DE system); 2, selecting a damming position based on the original terrain model, and creating a dam axis; thirdly, a core-wall rock-fill dam parameterized large formwork is adjusted and used, and an initialized core-wall rock-fill dam model is established; and 4, the parameterization of the initialized core-wall rock-fill dam model is verified, and the corrected core-wall rock-fill dam model is obtained. And 5, based on the corrected core-wall rockfill dam model, carrying out design scheme comparison and optimization to obtain a final core-wall rockfill dam design scheme, and outputting the core-wall rockfill dam engineering quantity. The invention specifically provides a set of systematic and complete core-wall rock-fill dam three-dimensional design method, the design process and steps are implanted into a core-wall rock-fill dam three-dimensional parameterized model, the three-dimensional model is updated through full parameterization driving with design parameters as the core, and the design work of the core-wall rock-fill dam is completed.

Described here are wireless monitoring devices, systems, and methods for estimating one or more physiological parameters of a patient. These devices and systems may measure or receive a signal waveform transmitted through one or more of fluid and a physiological structure of a patient. This measured signal waveform may be processed to generate waveform parameter data used to estimate a physiological parameter such as blood velocity, heart wall thickness, and the like.

This utility model discloses a dual-disc, one-piece biodegradable foramen ovale occluder for atrial septum. The occluder includes a first disc, a second disc, and an occluding part. The first and second discs are connected to the two ends of the occluding part. The first, second, and occluding parts are one-piece molded and biodegradable. Both the first and second discs are elastic components that can automatically return to their original shape. The plane containing the edge of the first disc is a first plane, and the plane containing the edge of the second disc is a second plane. The angle between the axis of the occluding part and the first plane is an acute angle, and / or the angle between the axis of the occluding part and the second plane is an acute angle. The occluder is a one-piece biodegradable component, which can avoid long-term complications and safety hazards caused by metal remaining in the body. Furthermore, the first and / or second discs are inclined relative to the occluding part, thereby allowing the first and second discs to adapt to different shapes of heart wall structures and improving the occlusion effect.

The present disclosure relates generally to the field of medical devices for delivering artificial chordae tendineae in a patient. A system for adjusting tension in an artificial chordae tendineae includes an artificial chordae tendineae coupleable between a clip and an anchor. The clip is engageable with a leaflet of a heart valve while the anchor is engageable with a papillary muscle or heart wall. The anchor includes a body portion, and a locking portion coupleable with the artificial chordae tendineae and configured to allow movement of the artificial chordae tendineae in a first direction while preventing movement of the artificial chordae tendineae in a second direction opposite the first direction. An actuator is coupled to the locking portion for selectively releasing the locking portion to enable selective movement of the artificial chordae tendineae in the second direction.

The atrial fibrillation ablation catheter comprises a catheter body, a sealing sleeve and an ultrasonic ablation transducer, and the catheter body extends from the near end to the far end in the axial direction and is provided with a guide wire cavity used for allowing a guide wire to penetrate through; the sealing sleeve wraps at least part of the guide pipe body; the ultrasonic ablation transducer is arranged on the outer wall of the catheter body and located in the sealing sleeve, and the frequency of the ultrasonic ablation transducer ranges from 15 KHz to 45 KHz. The invention further provides an ablation system comprising the ablation catheter. The ultrasonic energy provided by the ultrasonic ablation system provided by the invention mainly generates a cavitation effect through ultrasonic focusing and can selectively ablate myocardial cells under the surface layer of the heart wall, so that tissues or cells such as nerves, blood vessels and smooth muscles adjacent to the myocardium are prevented from being damaged; therefore, local heart tissue is ablated, an abnormal electric signal conduction path is blocked, and the purpose of treating arrhythmia is achieved.

The invention is entitled "Measuring thickness of heart wall tissue during ablation". The invention discloses a method for estimating the thickness of heart tissue undergoing ablation, the method comprising the steps of: (a) applying a sequence of ablation pulses to a region of the heart tissue so as to produce an ablation lesion, and (b) for a given ablation pulse in the sequence, estimating an incremental depth added to the ablation lesion as a result of the given ablation pulse. A cumulative depth of the ablation lesion is estimated based on the cumulative depth prior to the given pulse and based on the incremental depth. An amplitude of an electrogram signal at the region is assessed after application of the given ablation pulse, and if the amplitude exceeds a predetermined threshold, the estimate of the thickness is set to at least the cumulative depth.

A prosthetic valve can be formed to guide flow from an outflow orifice into a posterior portion of the heart wall. The prosthetic valve includes an expandable frame that can be covered by a cover that is seamlessly attached to the frame. The prosthetic valve may also include a controlled outflow orifice size. Methods of using these devices are also disclosed.

The invention discloses a double-disc-shaped integrally-formed degradable heart atrial septum foramen ovale plugging device which comprises a first disc part, a second disc part and a plugging part, the first disc part and the second disc part are connected to the two ends of the plugging part, and the first disc part, the second disc part and the plugging part are integrally-formed pieces and are degradable pieces; and the first disc part and the second disc part are elastic pieces capable of automatically restoring to original shapes. The plane where the edge of the first disc portion is located is a first plane, the plane where the edge of the second disc portion is located is a second plane, and the included angle between the axis of the plugging portion and the first plane is an acute angle and / or the included angle between the axis of the plugging portion and the second plane is an acute angle. The plugging device is an integrally-formed degradable part, and long-term complications and potential safety hazards caused by metal remaining in the body can be avoided. And the first disc part and / or the second disc part are / is obliquely arranged relative to the plugging part, so that the first disc part and the second disc part can adapt to heart wall surface structures in different shapes, and the plugging effect is improved.

A delivery device includes an inner shaft, an outer sheath, a nosecone, and a tether component. The outer sheath is slidably disposed over the inner shaft. The nosecone is removably coupled to the inner shaft. The nosecone includes a delivery configuration for delivery to a treatment site, a radially compressed configuration in which a portion of the nosecone is configured to traverse through a heart wall, and a radially expanded configuration in which an outer surface of the nosecone contacts an outer surface of the heart wall. The tether component includes a first end coupled to the nosecone. The nosecone is configured to plug a piercing in the heart wall when in the radially expanded configuration.

A sequence of images acquired consecutively in time at fixed time intervals is received, the images comprising image data of at least part of a heart having a heart wall, identifying, in each image, at least part of the heart wall and defining, in each image, at least one vector point on the identified heart wall. The method further comprises determining motion of the vector point over time, based on the sequence and receiving a first reference related to the heart. Based on the tracking of the vector point and the first reference, a motion vector is determined indicating motion of the vector point relative to the reference.

For boundary detection, such as heart wall detection for strain or another quantification, the boundary is detected using multiple types of imaging, such as B-mode and contrast. The confidence in the detected locations is used to form a more accurate boundary, such as replacing low confidence locations from B-mode imaging with higher confidence locations from the contrast imaging. Even where experts may struggle to identify boundaries, a more accurate boundary is created and used by the image processor or processing.