13511 results about "Stent" patented technology

This application is directed to systems, methods, and devices for image based analysis of plaque. In some embodiments, the approaches herein can be used for developing treatment plans, which can include local treatment, systemic treatment, or both. In some embodiments, the approaches herein can be used for stent selection. In some embodiments, the approaches herein can be used for surgical planning, which can include robotic surgical planning. In some embodiments, the approaches herein can be used for image normalization. In some embodiments, the approaches herein can be used for identifying plaque calcification thresholds. In some embodiments, the approaches herein can be used for identifying thin cap fibroatheroma. In some embodiments, the approaches herein can be used for coronary artery tree reconstruction. Some embodiments are directed to coronary artery disease risk stratification.

There is described a computer-implemented method for designing a stent, comprising: providing for display a first image of a 3D model of at least a portion of a body part comprising an aneurysm; receiving a position for each one of a plurality of reference points chosen along the body part; inserting in the first image a visual marker at the position of each reference point, thereby obtaining a second image; providing the second image for display; for each reference point, calculating a respective diameter; calculating at least one length using the positions of the reference points; and outputting the respective diameter and at least one length.

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.

A collapsible and expandable prosthetic mitral valve stent is provided with improved recapture into a distal lumen of a delivery sheath. Various embodiments comprise a valve support within the interior of a stent frame and defining a flow channel therethrough, wherein the top or upstream of the valve support comprises a row, or a plurality, of stent cells that are bent radially inward at least partially over the flow channel. Some embodiments may comprise a recapture assist mechanism, such as an open paddle, attached to one or more of the inwardly bent stent cells and adapted to receive and / or engage a wire to aid in positioning, expansion, recapture and / or implanting the device in a patient's heart chamber.

This application is directed to systems, methods, and devices for image based analysis of plaque. In some embodiments, the approaches herein can be used for developing treatment plans, which can include local treatment, systemic treatment, or both. In some embodiments, the approaches herein can be used for stent selection. In some embodiments, the approaches herein can be used for surgical planning, which can include robotic surgical planning. In some embodiments, the approaches herein can be used for image normalization. In some embodiments, the approaches herein can be used for identifying plaque calcification thresholds. In some embodiments, the approaches herein can be used for identifying thin cap fibroatheroma. In some embodiments, the approaches herein can be used for coronary artery tree reconstruction. Some embodiments are directed to coronary artery disease risk stratification.

The invention relates to a bearing device (100) for a cardiac support system. The bearing device (100) comprises a stand unit (105) and an impeller (110). The stand unit (105) is designed to support the impeller (110) such that it can rotate. The impeller (110) is designed to rotate during an operation of the cardiac support system in order to convey a pump fluid flow (115). The impeller (110) is designed to enclose at least one subsection (120) of the stand unit (105) in the assembled state of the bearing device (100), wherein an intermediate space (125) for guiding a flushing fluid flow (130) is provided between the subsection (120) and the impeller (110). At least one flushing outlet (135) is formed in the impeller (110). The flushing outlet (135) is designed to discharge the flushing fluid flow (130) from the intermediate space (125) by means of centrifugal force when the cardiac support system is in operation.

A drain including a stand and a conduit is disclosed. The stand is formed from a face and at least one side, the face including a first conduit with an upper end further forming an inlet and a lower end forming an outlet. A drain cover with a number of slats may be attached to the stand. The stand is positioned over an opening through a portion of one side of a second conduit so that the lower end of the first conduit is insertable into the opening. The stand and drain cover are fastened together by a one or more fastener(s) through different one or more hole(s) of the stand and one or more hole(s) of the drain cover.

An interventional device for a tubular body, comprising: a stent switchable between a first state and a second state, the diameter of the stent in the second state being greater than the diameter of the stent in the first state; the at least one puncture part is arranged on the stent, and the puncture part is used for puncturing the wall of the tubular body when the stent is in the second state; the at least one electrode is arranged on the at least one puncture part, and the electrode is used for extending out of the tubular body from the area, punctured by the puncture part, of the wall. By means of the scheme, effective implantation of the electrode can be achieved based on the intervention device, the implanted electrode can make direct contact with the biological tissue target area outside the tubular body, direct and non-barrier signal interaction is achieved, and the signal collecting and stimulation applying effects of the electrode are greatly improved.

Apparatus and methods for an implant are provided. The implant may have a constrained configuration and a relaxed configuration. The implant may include an outer stent and an inner valve support. The inner valve support may be positioned within the outer stent. The implant may include a transition section spanning between the outer stent and the inner valve support.

A reusable urinary catheter (72), comprising a catheter tube (12), a drainage member (22), the proximal end portion of the drainage member being connected to the distal end of the catheter tube, the distal end portion of the drainage member defining a drainage opening (28); a collapsible sleeve (18) surrounding the catheter tube, an introducer attached to the proximal end portion of the sleeve and the distal end portion of the sleeve being attached to the drainage member, the drainage member including channels (23) in fluid communication with the interior cavity of the sleeve, the channels allowing passage of sterilization fluid into and out of the sleeve; a holder (74) having a first port (66) and a second port (68), the introducer being releasably attached to the first port and the drainage member being releasable attached to the second port; and a sterilization fluid located within the sleeve.

The present invention discloses a presettable artificial biological aortic valve which comprises a valve seat (1), a valve leaflet stent (2) and three valve leaflets (3), wherein the valve seat (1) is a one-way limiting expandable annular metal seat; the head end of each seat body unit (4) is sequentially provided with a first rivet (7), a limiting protrusion (6) and a first long circular groove (5) from the outside to the inside; the tail end of each seat body unit (4) is sequentially provided with a second long circular groove (8), a second limiting hole (10) and a first limiting hole (9) matched with the limiting protrusion (6), and a second rivet (11) matched with the first long circular groove (5). The presettable artificial biological aortic valve has an original preset state and a normal use state after one-way limiting expansion.

A calculation method and apparatus for a fractional flow reserve (FFR) of a virtual stent, and a device and a medium. The calculation method comprises: in response to a selection operation for a target blood vessel segment, displaying the selected target blood vessel segment in an interaction interface (S110); and in response to an adjustment operation for a virtual stent that is implanted into the target blood vessel segment, displaying, in the interaction interface, an FFR of the virtual stent after being adjusted (S120).

Disclosed herein are systems, devices, and methods for implanting electrodes within a cerebral vessel of a subject. For example, disclosed are various types of implantable electrode arrays, stents carrying electrode arrays, delivery devices for implantable electrode arrays, electrical interfaces for an implantable electrode array, connector lead cable assemblies for an implantable electrode array, and methods of delivering and deploying implantable electrode arrays.

A The present disclosure provides a sub-assembly for a medicament delivery device configured to expel medicament from a medicament container. The sub-assembly includes a housing, a pre-tensioned plunger rod, a holding sleeve fixedly attached to the housing, the holding sleeve comprising at least one holding arm arranged to lock the plunger rod in its pre-tensioned state, and a rear cap having a blocking surface arranged to prevent the holding arm from releasing the plunger rod from its pre-tensioned state. The sub-assembly further comprises an activation button having a locking surface, the activation button being operatively arranged to, upon activation, move from a first state in which the locking surface is abutting the rear cap to prevent the movement of the holding arm from releasing the plunger rod, to a second state in which the locking surface is displaced to thereby allow the holding arm to move radially outwards to release the plunger rod

The invention discloses a human body intravascular positioning support, and relates to the field of medical instruments. Comprising a metal wire support which is used for expanding in a blood vessel of a human body to dilate the blood vessel, a plurality of positioning units are arranged on the metal wire support, and each positioning unit comprises a spring and a penetrating type positioning head fixedly connected with the far end of the spring; the near end of the spring is fixedly connected with the metal wire support, and the penetrating type positioning head is used for penetrating into the inner wall of a blood vessel to achieve positioning when the metal wire support is unfolded. Through the design that the spring is combined with the positioning unit of the piercing type positioning head, the unification of stable fixing and safe taking-out of the intravascular positioning stent is achieved.

The invention discloses an implanter and a dynamic glucometer, and relates to the technical field of medical equipment.The implanter comprises a shell, a needle returning assembly, an implanting assembly and a transmitting key assembly; the needle returning assembly comprises a needle returning cap, a needle returning driving element and an implantation launching support, the needle returning driving element is located between the needle returning cap and the implantation launching support, the needle returning cap is used for being connected with an emitter, and the implantation launching support is provided with a through hole for the emitter to penetrate through; the implantation assembly comprises an implantation fixing support and an emission driving element, the implantation fixing support is fixed to the shell, the needle returning cap and the implantation fixing support are connected with the implantation emission support in a clamped mode, and the emission driving element is located between the implantation fixing support and the implantation emission support; and the transmitting key assembly is in contact with the implantation fixing bracket. The dynamic glucometer comprises an emitter and an implanter, the emitter is located in the shell, and the emitter is connected with the needle returning assembly. The implanter can be reset, and the effectiveness of the implanter can be conveniently detected in the production process.

In some embodiments, a prosthetic heart valve includes a collapsible and expandable stent comprising a plurality of commissure attachment features, a valve assembly coupled to the collapsible and expandable stent, the valve assembly comprising a cuff and a plurality of leaflets, and a suture pattern coupling at least one of the plurality of leaflets to at least one of the cuff and the collapsible and expandable stent, the suture pattern comprising a reverse-running stitch having a first leg and a second leg.

The disclosure relates to a bearing device for a cardiac support system. The bearing device comprises a stand unit and an impeller. The stand unit is designed to support the impeller such that it can rotate. The impeller is designed to rotate during an operation of the cardiac support system in order to convey a pump fluid flow. The impeller is designed to enclose at least one subsection of the stand unit in the assembled state of the bearing device, wherein an intermediate space for guiding a flushing fluid flow is provided between the subsection and the impeller. At least one flushing outlet is formed in the impeller. The flushing outlet is designed to discharge the flushing fluid flow from the intermediate space by means of centrifugal force when the cardiac support system is in operation.

The invention relates to a syringe. Comprising a shell, an injection push rod, an adjusting knob, a dose scale ring, a push rod sleeve, a scale ring support, a support reset elastic piece, a torsion elastic piece and an injection button, a first external thread is arranged on the outer surface of the injection push rod, and a first internal thread is arranged at the far end of the shell; the adjusting knob is used for setting dosage; the dose scale ring is used for indicating the dose to be injected and can spirally rotate along with the rotation of the adjusting knob; the push rod sleeve can rotate along with the rotation of the adjusting knob; the near end of the scale ring support is provided with a first end face gear ring, and the far end is in circumferential linkage with the push rod sleeve. A second end face gear ring is arranged at the near end of the shell; the support reset elastic piece is used for maintaining meshing of the first end face gear ring and the second end face gear ring. In the working state of setting the dosage, the torsion elastic piece is twisted in the rotation of the adjusting knob; the injection button axially moves towards the far end, and the injector enters an injection working state; according to the technical scheme, the cost of the injector is reduced.

The application relates to the field of medical devices, in particular to a repair system capable of accurate positioning, which comprises a delivery catheter, a positioning support arranged in the delivery catheter, an anchoring mechanism, a flexible sleeve and a guide wire, the positioning support is arranged at the distal end of the delivery catheter, the positioning support is provided with a plurality of anchoring points distributed in the circumferential direction, the flexible sleeve is provided with a plurality of connecting points arranged in correspondence with the anchoring points, the guide wire passes through the connecting points and the anchoring points corresponding to the connecting points in sequence, and after the positioning support is released, the anchoring mechanism pushes the flexible sleeve, so that the flexible sleeve cooperates with the guide wire and guides the anchoring mechanism to reach each anchoring point along a predetermined route and complete anchoring; the application not only simplifies the structure of the device, but also realizes accurate guidance.

Embodiments described herein relate to an implant delivery system for delivering an implant for reducing heart valve regurgitation. The implant delivery system may include an implant catheter disposed in an inner lumen of a guide catheter. The implant catheter may include one or more hypotubes disposed therein, each hypotube configured to receive an elongate member such as a braided tether. A distal end of the implant catheter may be coupled to an implant holder configured to receive the implant. The implant holder may define one or more channels, each channel configured to receive a portion of a respective elongate member. The elongate members configured to couple the implant to the implant holder and transition the implant between configurations. The implant configured to be disposed around a portion of a leaflet of a heart valve to improve coaptation of the heart valve.

The embodiments are directed to rod holders including a fastener, a stake, and a tube. The fastener includes a head and a body. The stake includes a first end, a second end, and an elongated slot along a longitudinal direction of the stake. The tube includes a receiving end, a bottom end, and a boss running radially into the tube between the receiving end and the bottom end, where the receiving end is operable to removably receive a lower end of a rod. The body of the fastener mates with the elongated slot and is removably coupled to the boss such that the stake is slidably coupled to the tube and movable between a retracted position and an extended position. The head of the fastener is removably coupled to the stake to secure the stake from sliding along a longitudinal direction of the tube.

The invention belongs to the technical field of medical instruments, and particularly relates to a dense net support. The dense net support comprises a front fixing section, a blocking section and a rear fixing section, and the blocking section is located between the front fixing section and the rear fixing section. The plugging section is connected with the front fixing section through a front connecting piece, and the plugging section is connected with the rear fixing section through a rear connecting piece; the plugging section is used for plugging an aneurysm position of a blood vessel, the plugging section sequentially comprises an inner layer part, a middle layer part and an outer layer part from inside to outside, the inner layer part adopts an inner layer metal stent, and the outer layer part adopts an outer layer metal stent. The dense net stent can adjust hemodynamics more accurately, and it is ensured that the blood flow of healthy blood vessels is not affected while the aneurysm is closed; the sealing effect of the aneurysm is ensured, and thrombosis is well promoted, so that blocking and healing of the aneurysm are promoted; and the endothelialization process of the stent is facilitated, so that the success rate of fusing the stent into the blood vessel is improved, the effect of completely sealing the aneurysm opening is achieved, and the recurrence risk is reduced.

The invention discloses a universal movement mechanism and a surgical instrument, and relates to the field of medical instruments. The universal movement mechanism comprises a spherical pair assembly, a support and a locking assembly. The inner ball sleeve can rotate relative to the support through the first pivot, the outer ball sleeve can rotate relative to the support through the second pivot, and universal rotation between the inner ball sleeve and the outer ball sleeve is converted into rotation movement around the first pivot and the second pivot. When the motion posture of the spherical pair assembly needs to be fixed, a user can lock the rotation angle of the first pivot by operating the second locking piece to limit and lock the first locking piece, and can lock the rotation angle of the second pivot by operating the third locking piece to limit and lock the fourth locking piece; the ball pair assembly can be adjusted and locked by controlling the first pivot and the second pivot. The universal movement mechanism provided by the invention is good in structural locking strength and high in structural installation, adjustment and locking precision, and the surgical instrument adopting the universal movement mechanism has good locking precision and adjustment effect.

A medical stent includes an expandable structure that is moveable between a collapsed configuration for delivery and an expanded configuration for deployment, the expandable structure in the expanded configuration defining a relaxed diameter. The expandable structure retains its relaxed diameter along portions of the expandable structure that are not constrained by contact with vessel walls after deployment. Portions of the expandable structure that are compressed by contact with vessel walls after deployment are caused to move to a reduced diameter less than the relaxed diameter along portions. The compressed portions of the expandable structure may help prevent plaque from breaking loose. Uncompressed portions of the expandable structure may allow blood flow therethrough.

The disclosure relates to heart have prostheses with the reduced need of pacemaker implantation and improved means for positioning the replacement heart valve. In one aspect of the present disclosure, the stent scaffold of the valve prosthesis includes axially extending locators. The locators may be positioned within the cusp of the native aortic valve. Placement of the locators within the cusps may prevent further proximal movement of the stent scaffold into the left ventricle. By adjusting the location of the proximal end of the locators with respect to the proximal end of the stent scaffold, infra-annular placement of the stent scaffold in the aortic annulus may be assured. In another aspect, means for visualizing the positioning of replacement heart valves at an implant site inside an individual's body is disclosed.

The invention belongs to the technical field of medical rehabilitation equipment, and particularly relates to a postoperative rehabilitation device based on digital medical treatment, which comprises an upper arm support and a lower arm support movably hinged to one end of the upper arm support, and the upper arm support and the lower arm support are respectively fixed on the surfaces of the upper arm and the forearm of a patient. The lower arm support comprises a first lower arm support body and a second lower arm support body which are arranged up and down, a plurality of first lower arm massage bags which are communicated with one another are arranged on the surface, attached to a patient, of the first lower arm support body, and a plurality of second lower arm massage bags which are communicated with one another are arranged on the surface, attached to the patient, of the second lower arm support body. The ends, away from the upper arm support, of the first lower arm support and the second lower arm support are detachably connected with a plurality of lower arm extension blocks, and the upper arm support also comprises a first upper arm support and a second upper arm support which are arranged up and down. The problems that an existing elbow joint postoperative rehabilitation device cannot be suitable for treatment of patients with arms of different sizes, and the application range is limited can be effectively solved.

The invention belongs to the technical field of medical instruments, and particularly relates to an artificial heart valve which comprises a support and a valve leaflet mechanism. A plurality of bracket connecting holes are formed in the bracket; the valve leaflet mechanism comprises a plurality of connecting pieces and artificial valve leaflets; the artificial valve leaflet is provided with a valve leaflet main body, two first connecting parts and two second connecting parts, each connecting piece penetrates out of the corresponding support connecting hole from the inner side of the support after being folded and is attached to the two sides of the periphery of the support connecting hole, every two adjacent fixing parts are connected with the two sides of the corresponding connecting piece respectively, and the arc-shaped parts can be attached to the surface of the valve leaflet main body. After the artificial valve leaflet and the support are fixed, in the open state of the artificial valve leaflet, the arc-shaped part attached to the outer wall of the artificial valve leaflet can play a role in buffering the artificial valve leaflet, and the artificial valve leaflet is protected.

A high-performance near-pure zinc alloy, a preparation method therefor and a use thereof, relating to the technical field of zinc alloys. The alloy component is that the content of Zn is greater than or equal to 99.5%, and the remaining trace alloy elements include at least two of the following 14 elements: Mg, Mn, Li, Cu, Ag, Ca, Sr, Fe, Zr, Ti, Al, C, Ga, and Si. The alloy has the yield strength ≥ 250 MPa, the tensile strength ≥ 320 MPa, the elongation ≥ 25%, the mechanical property change during one year of room-temperature storage ≤ 5%, the maximum bending force ≥ 2 kN, the stress corrosion sensitivity factor ≤ 15%, the size of corrosion pits after 60 days of immersion ≤ 15 μm, and the standard deviation of the size of corrosion pits ≤ 3 μm. The alloy is suitable for the preparation of biodegradable stents, bone implant devices, medical staplers or anastomotic nails for intestines, blood vessels or nerves, vascular clamps, guided bone or tissue regeneration membranes, heart valve protheses, dura mater repair membranes, soluble bridge plugs and fracturing balls for oil drilling, zinc alloy die castings, electroplated zinc materials, building zinc materials, battery-grade zinc, printing-grade zinc, and zinc-based brazing alloys.

Embodiments described herein relate to an implant delivery system for delivering an implant for reducing heart valve regurgitation. The implant delivery system may include an implant catheter disposed in an inner lumen of a guide catheter. The implant catheter may include one or more hypotubes disposed therein, each hypotube configured to receive an elongate member such as a braided tether. A distal end of the implant catheter may be coupled to an implant holder configured to receive the implant. The implant holder may define one or more channels, each channel configured to receive a portion of a respective elongate member. The elongate members configured to couple the implant to the implant holder and transition the implant between configurations. The implant configured to be disposed around a portion of a leaflet of a heart valve to improve coaptation of the heart valve.