1052 results about "Prosthetic limb" patented technology

The present invention provides a prosthetic heart valve device with improved fit and / or apposition between the device frame and left atrial tissue and / or the device base and the annular tissue of the left atrium to improve shifting of the implanted device and / or mitigate paravalvular leakage. The improved fit and / or apposition arises in various embodiments by providing or allowing an asymmetrical frame and / or frame base and / or providing a lower lip to aid in conforming to the asymmetrical shape of the atrium and / or ensure firm positioning therein. An additional benefit of these arrangement(s) is mitigation of paravalvular leakage as a result of improved fit and seal. In certain embodiments, the asymmetry of the frame assists with delivery of the device into the atrium.

A prosthetic heart valve may include a balloon-expandable frame extending between an inflow end and an outflow end, a plurality of prosthetic leaflets mounted within the frame, and an inner skirt positioned between the plurality of prosthetic leaflets and the frame. The frame may include a first row of diamond-shaped cells at the inflow end of the frame, a second row of diamond-shaped cells, and a row of outflow cells positioned at the outflow end of the frame. Each cell in the row of outflow cells may not be diamond-shaped, and, in an expanded condition of the frame, each cell in the row of outflow cells may have a larger area than that of each cell in the first and second rows of diamond-shaped cells. Each outflow cell may be at least partially defined by a commissure attachment feature, and each outflow cell may lack symmetry.

Various aspects of this disclosure relate to a prosthetic cover comprising an array of sensors, which transmit signals to an array of electrodes in a liner that fits over a residual limb of an amputee. Different interactions with the prosthetic cover cause different activation of the electrodes to transmit electrical current through different areas of the residual limb and modulate neurons differently within the residual limb. Various aspects of this disclosure also relate to a prosthetic liner with a substrate that includes electrodes for transcutaneous electrical nerve stimulation and / or electronic muscle stimulation for a residual limb.

Prosthetic heart valves each includes a link extending along a link axis and an axial frame. The axial frame includes a plurality of struts comprising a plurality of inner struts pivotally attached to a plurality of outer struts at a plurality of pivot nodes. A first pivot node of the plurality of pivot can be attached to the link and a second pivot node of the plurality of pivot nodes can move relative to the link along the link axis. Methods of radially expanding a prosthetic heart valve can comprise radially expanding the radially expandable frame from a radially retracted orientation to a radially expanded orientation while the second pivot node axially translates relative to the link.

A radially expandable prosthetic valve can comprise an annular frame, at least one expansion mechanism and a cord. The annular frame can be radially collapsible and expandable between a radially collapsed configuration and a radially expanded configuration. The expansion mechanism can comprise a first member attached to the frame at a first location and a second member attached to the frame at a second location axially spaced from the first location. The cord can extend at least partially along the expansion mechanism in a first direction, be reeved around a portion of the second member, and extend at least partially along the expansion mechanism in a second direction opposite the first direction. Applying a proximally directed force to a first portion of the cord can cause the second member to move relative to the first member, which can cause the frame to foreshorten axially and expand radially.

An automated system that can be used for prosthetic heart valve manufacturing or suturing procedures. The system can include a first automated fixture that includes an articulating arm and a target device holder. The system can also include one or more additional automated fixtures, which can be configured as one or more suturing arms that include another articulating arm and a needle holder. The first automated fixture can be configured to rotate a target device held by the holder to allow the one or more additional automated fixtures to perform operations such as form sutures on the target device without intervention of a human operator. The system can include a display system configured to display status information of a suturing procedure.

A side-deliverable prosthetic valve includes an outer frame, a flow control component mounted within the outer frame, and an anchoring element coupled to a distal side of the outer frame. The prosthetic valve is foldable along a longitudinal axis and compressible along a central axis to a compressed configuration for side delivery via a delivery catheter and is expandable to an expanded configuration when released from the delivery catheter. An end portion of the anchoring element is configured to engage a guide wire. The anchoring element is extended during deployment to allow the anchoring element to capture at least one of native leaflet or chordae and, in response to the guide wire being disengaged from the end portion, transitions to a folded configuration to secure at least one of the native leaflet or the chordae between the anchoring element and the distal side of the outer frame.

A prosthetic aortic valve device, delivery system, interventional system, and related method are disclosed. The device includes an inner frame having relative compressed and expanded configurations; leaflets connected to the inner frame and cooperating with each other to control opening and closing of the blood flow passage; and a positioning mechanism arranged in a circumferential direction of the inner frame, the positioning mechanism including a fixed end connected to the inner frame and a free end extending towards the inflow end, the positioning mechanism being configured to be switchable among a loaded configuration, a transition configuration, and a released configuration.

The hydraulic damper comprises an oil storage container, a piston is arranged in the oil storage container, and the piston divides the oil storage container into a first oil cavity and a second oil cavity; a piston rod; one part of the first circulating oil way and one part of the second circulating oil way are shared with each other, and damping parts are arranged on the parts and used for applying damping force to the hydraulic oil flowing through the damping parts; at least one first valve is arranged on the first circulating oil way and used for limiting hydraulic oil in the first circulating oil way to only flow from the first oil cavity to the second oil cavity in a one-way mode; at least one second valve is arranged on the second circulation oil way and used for limiting the hydraulic oil in the second circulation oil way to only flow from the second oil cavity to the first oil cavity in a one-way mode. The two-way damping control device has the beneficial effects that under the condition that only one damping valve is used, two-way damping control can be achieved when the artificial limb moves, and the wearing comfort and attractiveness of the artificial limb are improved.

A delivery apparatus can include a handle, a first shaft extending from the handle and having a proximal end portion coupled to the handle and a distal end portion and a second shaft extending coaxially over the first shaft and having a proximal end portion coupled to the handle and a distal end portion. The delivery apparatus can further include a shoulder coupled to the distal end portion of the second shaft and having a flared end portion configured to abut a prosthetic valve positioned around the first shaft in a radially compressed state, an extension portion extending from the shoulder, and at least one radiopaque marker disposed on the extension portion at a location within the prosthetic valve when the prosthetic valve is in a radially compressed configuration on the first shaft.

Aspects herein are directed to a tubular knit sleeve for a below-the-knee amputee where the tubular knit sleeve includes zoned grip features, zoned cushioning features, zoned traction features, and zoned breathability / permeability features that facilitate the wearer participating in athletic activities, such as wrestling, without a prosthetic leg.

An assistance system that can be used for prosthetic heart valve manufacturing or suturing procedures includes an automated fixture that can comprise an articulation arm and a target device holder. The target device holder can be positioned and oriented to reduce operator strain during a manufacturing or inspection process. The assistance system includes a user input device enabling the operator to move between positions to assist in such processes. The assistance system can also be trained by capturing sequences of position data corresponding to a manufacturing or inspection process.

A prosthetic cardiac valve includes a frame and plurality of prosthetic leaflets coupled to the frame so as to allow blood flow in one direction. An antenna is mechanically coupled to the frame, and includes a magnetic core and one or more coils wound about the magnetic core. At at least one location along a length of the magnetic core, a planar space bound by an outer perimeter of the magnetic core, in a plane perpendicular to a central longitudinal axis of the frame, has (a) a shorter dimension, which is measured along a ray that radiates radially outward from the central longitudinal axis and intersects a centroid defined by the planar space, and (b) a longer dimension, which is measured perpendicular to the shorter dimension in the plane, and is at least 150% of the shorter dimension. Other embodiments are also described.

A prosthetic cardiac valve (620) includes a frame (630) and a plurality of prosthetic leaflets (32) coupled to the frame (630) so as to allow blood flow in one direction. An antenna (28) is mechanically coupled to the frame (630) proximal of the prosthetic leaflets, and includes one or more prosthetic-valve coils (36). First and second proximal peaks (204 A, 204B) respectively defined by circumferentially adjacent first and second proximal- most stent cells (206A, 206B) of interconnected stent cells (192) of the frame (630) are located at respective first and second peak angular locations (208 A, 208B) about a central longitudinal axis (60) of the frame (630). The antenna (28) is mechanically coupled to the frame (630) such that a centroid (212) of the antenna (28) is at an antenna angular location (214) between the first and the second peak angular locations (208A, 208B), and a proximal-most point (216) of the antenna (28) is axially disposed between 5 mm proximal of and 5 mm distal of the first and the second proximal peaks (204 A, 204B). Other embodiments are also described.

An alignment device for crimping a prosthetic valve onto a valve mounting portion of a delivery apparatus is disclosed. The alignment device can include a coupling portion comprising a coupling member configured to couple with a crimping device, a support portion that tapers from a wider end that is disposed adjacent a first end of the coupling portion to a narrower end, where the support portion comprises an outward facing support surface that is configured to receive the prosthetic valve thereon, and one or more axially extending alignment members. Each alignment member extends axially outward from the first end of the coupling portion, over the support portion and to the support surface, each alignment member comprising a free end configured to abut an end of the prosthetic valve and be axially aligned with a commissure of the prosthetic valve when the prosthetic valve is arranged on the support surface.

A modular prosthetic system for an upper limb in which the functional commands of the mechanical limb can be generated by exploiting additional input data with respect to the only muscle contractions of the muscles present on the patient's stump, and the patient can receive a sensory feedback, the richer as possible, regarding to the functionality of the mechanical limb.The modularity of the prosthetic system allows the use of a mechanical artificial limb that essentially implements the pure operational and sensory functions, while the control functions by the patient, and the feedback functions provided to the patient, are managed by a subsystem (called control module) distinct and decoupled from the artificial limb, with which it interacts through appropriate interfaces.

Apparatuses, systems, and methods for various devices, such as prosthetic valves. Some examples are directed to improvements in anchoring at a native heart valve, which may reduce possible trauma to a treatment or implantation site. Compliant and flexible anchoring features and methods are disclosed to reduce force upon a treatment or implantation site including heart tissue that surrounds leaflets of a mitral or tricuspid valve. Improved mechanisms for deployment of devices including motorized methods are also disclosed.

The utility model discloses a tactile extremity structure and an artificial limb. The tactile extremity structure comprises a limb back structure; the limb abdomen structure is arranged on the limb back structure; the sensor is located between the limb back structure and the limb abdomen structure; the sensing target is arranged on the limb and abdomen structure; when the limb and abdomen structure deforms in a contact mode, the sensing target is driven to move and is sensed by the sensor. The sensor is located between the limb back structure and the limb belly structure, the sensing target is located on the limb belly structure and corresponds to the sensor in position, when the limb belly structure makes contact with other objects and deforms, the sensing target moves, the back sensor senses the movement, and therefore the limb end structure has touch sense and can sense contact. And the tactile extremity structure has a better simulation effect.

The invention discloses an electro-hydrostatic active ankle joint artificial limb and a walking method, and relates to the technical field of artificial limb technologies and additive manufacturing. The electro-hydrostatic active ankle joint artificial limb comprises a motor pump, a hydraulic cylinder, a hydraulic manifold block, an energy accumulator set and an integrated topological sole; the motor pump, the hydraulic cylinder, the energy accumulator set and the integrated topological sole are all integrated on the hydraulic manifold block, the motor pump is used for charging energy to the energy accumulator set, the motor pump and the energy accumulator set are both used for being connected with the hydraulic cylinder, and the hydraulic cylinder is used for being connected with the integrated topological sole. According to the electro-hydrostatic active ankle joint artificial limb and the walking method, the motor pump, the hydraulic cylinder, the energy accumulator set and the integrated topological sole are all integrated on the hydraulic manifold block, and the overall size and weight are reduced.

Systems and methods for sequential deployment of a prosthetic valve using a delivery catheter are described. The delivery catheter may include a deployment assembly including an end cone, a distal sleeve, a prosthetic support, an anchor sleeve and an anchor support. The delivery catheter may further include a handle having a manipulator including a guide that is connect to the deployment assembly with a force transmission tube. The guide may have various channels for interfacing with a protrusion of the handle and may be guided by the protrusion to sequentially deploy the prosthetic valve from the deployment assembly. For example, the guide may cause the distal sleeve to release a distal end of the prosthetic valve and subsequently cause an anchor support to release a proximal end of the prosthetic valve.

The invention is suitable for the technical field of medical instruments, and provides a pneumatic global self-adaptive ankle-foot artificial limb which comprises a rear sole and a front sole which are connected through a front and rear foot connecting piece. The pressure response assemblies are located at the bottoms of the rear sole and the front sole, and pressure changes after bearing; and the ankle self-adaption assembly is connected with the pressure response assembly through a valve communication assembly and drives the ankle to do eversion, centering and introversion motions based on pressure changes. According to the embodiment of the invention, an ankle joint inward and outward turning automatic adjusting mechanism directly driven by plantar pressure change can enable the artificial limb to adapt to complex terrains such as uneven road surfaces and lateral slopes in real time, an inward and outward turning motion mode of a physiological ankle joint in the walking process is simulated, and the gait of a user is smoother and more natural; the pure pneumatic control structure is relatively simple and light, and an external power supply pressure driving pump or a complex sensor is not needed.

Prosthetic heart valve leaflets of shapes that control bending. Prosthetic heart valves can include a leaflet frame having a generally tubular shape with attached film. The leaflet frame can define a plurality of leaflet windows with the film defining at least one leaflet extending from each of the leaflet windows. Each leaflet attachment zone on the leaflet frame may have substantially the shape of an isosceles trapezoid having two leaflet sides, a leaflet base and a leaflet free edge opposite the leaflet base. The two leaflet sides can diverge from the leaflet base, the leaflet base being substantially flat.

The invention discloses an intelligent artificial limb movement intention recognition method based on multi-modal information and a D-S evidence theory, and belongs to the technical field of artificial intelligence, mode recognition and intelligent artificial limb control. According to the method, firstly, electromyographic signals and kinematics signals of user limbs and three-dimensional point cloud information of the terrain where the user limbs are located are synchronously collected; filtering, segmenting and time domain / frequency domain feature extraction are carried out on the physiological signals, rotation correction and dimension reduction are carried out on the environment point cloud, and a binary image is generated; using a deep learning model to identify a preliminary motion mode from the physiological features and identify a terrain category from the environment image; and finally, inputting the two recognition results as evidence bodies into an improved D-S evidence theory model for decision-level fusion, and outputting a final comprehensive motion intention recognition result. According to the method, the human physiological signal and the external environment information are fused, so that the ambiguity and uncertainty of single information source identification are effectively solved, and the intention identification accuracy and adaptability of the intelligent artificial limb in different complex scenes are remarkably improved.

A prosthetic assistive device configured to attach to a distal end of a natural or prosthetic arm or wrist. The device may include a palm portion. A split hook may be coupled to a distal end of the palm portion. The split hook may comprise a first end effector and a second end effector. The prosthetic device may include a third end effector rotatably coupled to the palm portion at a proximal end of the palm portion. The third end effector may rotate about a transverse axis to pinch and unpinch, as well as rotate about a longitudinal axis to adduct and abduct. A rotating member such as a ring may rotate about a plate for adduction / abduction. The prosthetic device may include a drive assembly configured to rotate one or both of the split hook end effectors about two different axes.

A surgical device (2) for extraction of a prosthetic component from a patient during surgery. The surgical device comprises a first component (8) having a female coupling portion at a first end, and a second end configured to be connected to one of a prosthetic component or a surgical extraction instrument. The first component further includes a retainer. The surgical device further comprises a second component (10) with a first end defining a male coupling portion, a stem (30, 130) extending from the male coupling portion, and a second end configured to be connected to the other of the prosthetic component or the surgical extraction instrument. The male coupling portion of the second component is configured to be disposed within the female coupling portion of the first component and retained within the female coupling portion by the retainer, with the stem of the second component extending away from the female coupling portion of the first component. The male coupling portion of the second component and the retainer of the first component are configured such that the male coupling portion is held in the female coupling portion while allowing articulation of the first component relative to the second component. The first and second components form an articulating joint allowing a user to connect the surgical extraction instrument to the prosthetic component in a patient, articulate a portion of the surgical extraction instrument which resides external from the operating site, and transfer extraction forces to enable removal of the prosthetic component from the patient.

A prosthetic heart valve includes a first upper frame portion and a stent frame connected to the first upper frame portion via at least two stent frame extensions. The stent frame includes a base and at least two stent posts extending upwardly from the base towards the first upper frame portion. The first upper frame portion, the base, and the at least two stent posts each has an inner surface and an outer surface. The prosthetic heart valve also includes at least one sheet of leaflet material configured to encircle the stent frame and weave through the stent frame between the first upper frame portion and the base.

A system for loading a delivery apparatus including a crimping device and a loading assembly. The crimping device having a housing including a funnel segment and an outlet in communication with the funnel segment, and an actuator configured to advance a radially expanded prosthetic device at least partially through the funnel segment and outlet thereby partially crimping the prosthetic device. The loading assembly including a support tube disposable over at least a portion of a capsule of a delivery apparatus, the loading assembly comprising an inlet end configured to be disposed adjacent the outlet of the crimping device such that the loading assembly can be axially advanced over the partially crimped prosthetic device to move the prosthetic device into a fully compressed configuration.

A method of assembling a prosthetic heart valve comprises securing a suture loop having at least first and second windings to an outflow edge portion of an inner skirt. The first and second windings are arranged in a repeating pattern of figure-eight shape curves and each winding has a plurality of first sections attached to the outflow edge portion of the inner skirt and a plurality of second sections unattached to the inner skirt. The inner skirt is placed inside of an annular frame and the second sections of the first and second windings are placed over apices of an outflow end of the frame such that the second sections of the first and second windings reside outside of the frame. The second sections of the windings are inserted inwardly through openings in the frame and attached to selected locations on the inner skirt.

The application discloses an electro-hydraulic active ankle prosthesis and a walking method, relates to the technical field of prostheses and additive manufacturing technology, and discloses an electro-hydraulic active ankle prosthesis, which comprises a motor pump, a hydraulic cylinder, a hydraulic integrated block, an accumulator group and an integrated topology instep, wherein the motor pump, the hydraulic cylinder, the accumulator group and the integrated topology instep are all integrated on the hydraulic integrated block, the motor pump is used for charging the accumulator group, the motor pump and the accumulator group are both used for being connected with the hydraulic cylinder, and the hydraulic cylinder is used for being connected with the integrated topology instep. The electro-hydraulic active ankle prosthesis and the walking method have the advantages that the motor pump, the hydraulic cylinder, the accumulator group and the integrated topology instep are all integrated on the hydraulic integrated block, so that the overall volume and weight are reduced.