484 results about "Intra stent" patented technology

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.

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.

Disclosed herein are devices for mechanically removing clot and / or other material from implants implanted in the vasculature of a patient, and associated systems and methods. In some embodiments, a system for removing clot material from an implant—such as a stent—includes a clot treatment device configured to be deployed within the stent, a handle, and a first elongate member and a second elongate member coupling the clot treatment device to the handle. The first elongate member couples a first end portion of the clot treatment device to the handle, and the second elongate member couples a second end portion of the clot treatment device to an actuator of the handle. Actuation of the actuator is configured to move the second elongate member relative to the first elongate member to move the first and second end portions toward one another to radially expand the clot treatment device.

A prosthetic heart valve for treatment of a diseased heart valve having native anterior and posterior leaflets that move between an open configuration and a closed position to regulate blood flow through the heart valve during a cardiac cycle of a heart. The prosthetic heart valve having a crescent shaped stent, at least one prosthetic leaflet mounted on an inner surface of the stent, and at least one prong structure coupling a portion of the at least one prosthetic leaflet to a lower ventricular portion of the stent frame. The prosthetic heart valve further having systems for anchoring the upper flared portion of the stent to a posterior portion of the native valve annulus.

The invention discloses a new medicine application of a local injection acoustic response stent in enhancing ultrasound histotripsy. The acoustic response scaffold (ARS) comprises a scaffold material, fluorocarbon gas or liquid fluorocarbon particles with liquid-vapor phase change capacity, and microbubble cloud in the scaffold generates a strong cavitation ablation treatment effect in a target area under the action of low-frequency and low-sound-pressure ultrasound. Fluorocarbon gas or liquid fluorocarbon particles contained in the ARS form microbubble cloud and ideal cavitation nuclei under low-frequency low-sound-pressure ultrasonic excitation, inertia cavitation resonance is achieved under the ultrasonic action, and then cavitation mechanical damage with local tissue controllable strength is generated. The low-intensity ultrasonic histotripsy has the characteristics of low sound pressure, low sound intensity, high targeting property, small tissue damage outside a target region, simplicity in instrument manufacturing and the like, and the targeting property and the safety of treatment are improved. The method does not need very accurate ultrasonic focusing, reduces the operation difficulty, and has application prospects in multiple medical fields such as prostatic hyperplasia, tumor ablation and tumor immunotherapy.

A protective umbrella and intracavity umbrella ribs are coaxially arranged on a conveying guide wire of the far-end embolism protection device, a supporting bracket of the protective umbrella is of a hollow structure, two first openings are formed in the near end of the supporting bracket and are symmetrically arranged along the central axis of the supporting bracket, and a covering film is fixed to the far end of the supporting bracket and wraps a part of the far end of the supporting bracket; a plurality of holes are formed in the covering film, the intracavitary umbrella ribs are located in the supporting support and are of a hollow structure, and second openings of the intracavitary umbrella ribs face the far end of the supporting support. The intracavity umbrella ribs and the covering film form a double-layer filtering structure, so that the situation that thrombus clots are accumulated in the inner cavity of the protection umbrella is effectively improved, the probability that meshes / micropores of the protection umbrella are blocked is reduced, and sufficient blood supply of a nervous system is ensured; the intracavitary umbrella ribs and the supporting bracket are coaxially arranged, so that the stability of the protective umbrella in the blood vessel is improved, the protective umbrella is not prone to inclination, and effective capture of free thrombus is ensured; the arrangement of the two first openings ensures that an effective capture channel can be provided even in an inclined condition.

The invention provides a recoverable intravascular stent, and belongs to the technical field of interventional therapy instruments. The stent comprises a first stent body, a second stent body and an isolation component, and the outer side wall of the first stent body is used for directly supporting a blood vessel and can automatically contract in the radial direction; the second stent is coaxially arranged on the inner side of the first stent and used for supporting radial expansion of the first stent; the isolation part is arranged on the first bracket and / or the second bracket and is used for reducing the friction force between the first bracket and the second bracket; when the stent is taken out, the second stent is gradually taken out from the inner side of the first stent, the first stent automatically and radially contracts in the process of losing the support of the second stent to reduce the embedding force with the side wall of the blood vessel, and the whole stent is conveniently taken out; the intravascular stent is mainly used for solving the technical problems that in the prior art, the intravascular stent is large in resistance and not easy to take out.

The invention discloses a double-balloon type left ventricle auxiliary device which comprises an inlet tube, an outer balloon, an elastic support, an inner balloon, a catheter and a connecting piece. The inlet pipe is provided with a plurality of inflow windows and a one-way valve for controlling one-way flow of blood; the outer balloon has a folded state and an expanded state, in the conveying process, the outer balloon is in the folded state and can be contained in the conveying sleeve, and when the outer balloon reaches a designated position, the outer balloon is in the expanded state; the elastic support is attached to the surface of the external balloon, the elastic deformation of the elastic support enables the external balloon to be switched between a folded state and an expanded state, and the elastic support can provide radial supporting force in the expanded state, so that the external balloon is expanded and keeps a fixed volume; the internal balloon is arranged inside the external balloon, and contraction and expansion are realized by injecting gas or liquid, so that the volumes of inner cavities of the internal balloon and the external balloon are periodically changed, and the internal balloon and the external balloon are used for sucking and discharging blood; the catheter is provided with a medium cavity and a guide wire cavity, and the medium cavity is communicated with the internal balloon.

The invention particularly relates to a thrombectomy device, which comprises a capturing bracket, one end close to the far end of the capturing bracket is connected with a far-end spring, and one end close to the near end of the capturing bracket is connected with a pushing guide wire; the capturing bracket is formed by weaving a plurality of groups of weaving wires; one end of the thrombus breaking support is connected with one end, close to the far end, of the capturing support, and the other end is connected with one end, close to the near end, of the capturing support through a flexible wire; the thrombus breaking bracket is arranged in the capturing bracket; the flexible wires are straight wires or wavy wires; when the capturing support moves towards the near end, the thrombus breaking support moves along with the capturing support, elastically deforms and cuts thrombus located in the capturing support. The flexible wire can drive the thrombus breaking support to shake, and the thrombus breaking support in the shaking state has a better cutting effect on thrombus located in the capturing support. The metal coverage rate of the end, close to the far end, of the thrombus extraction device is increased through cooperation of the capturing support and the thrombus breaking support, and small thrombus is prevented from escaping towards the far end.

The invention discloses a biliary tract stent capable of being accurately released, which comprises a stent far end, a stent straight section and a stent near end which are connected in sequence, the number of layers of the stent is at least one, and the stent far end and the stent near end are made of materials with different colors. The number of layers of the stent is one, the materials of the stent far end, the stent straight section and the stent near end of the stent comprise but are not limited to silicone rubber, polyurethane, polyethylene, nylon or modified nylon Pebax, and the material hardness of the stent far end, the stent straight section and the stent near end of the stent ranges from Shore 25D to Shore 72D. Compared with a traditional stent of the same specification, the biliary tract stent capable of being accurately released has the advantages that the cross sectional area of an inner cavity is larger by 40%-100%, meanwhile, the inner surface of the stent is made of the super-smooth material, a biological membrane and bile mud are not prone to being attached, and the smooth time of the biliary tract stent is greatly prolonged.

The invention discloses an artificial auricle material compounded with a vascularization and cartilage double framework and a preparation method of the artificial auricle material. Comprising the following steps: 1) performing 3D modeling as required to obtain an artificial auricle macroporous stent model, and presetting an angiogenic differentiation framework on the artificial auricle macroporous stent model; 2) based on a multi-material multi-nozzle photocuring 3D printing technology, using a GelMA solution to print an artificial auricle macroporous stent, using a mesenchymal stem cell (MSCs)-loaded GelMA solution to print a vascularized framework in a framework, and after angiogenesis differentiation culture, obtaining an intermediate form artificial auricle compounded with the vascularized framework; and (3) introducing a ColMA solution loaded with MSCs into pores of the artificial auricle in the middle form by combining a multi-time dipping-photocuring method, and carrying out chondrogenic differentiation culture to obtain the artificial auricle material compounded with the vascularization and chondrogenesis dual frameworks at the same time. A vascularization framework and a cartilage framework are arranged in the stent at the same time, and a design normal form is provided for an artificial auricle with a complete physiological function.

The invention provides a double-layer embolism protection device and an embolism protection system.The double-layer embolism protection device comprises a wall-attached support, a conveying guide wire, a first intercepting filter screen and a second intercepting filter screen, and the wall-attached support is provided with a deformable containing space; the conveying guide wire is arranged in the wall-attached support in a penetrating mode, and the wall-attached support is connected with the conveying guide wire. First filter holes are formed in the first intercepting filter screen, the first intercepting filter screen is arranged around the conveying guide wire, the near end of the first intercepting filter screen is connected to the far end of the wall-attached support, and the far end of the first intercepting filter screen is slidably connected to the conveying guide wire; second filter holes are formed in the second intercepting filter screen, the second intercepting filter screen is arranged around the conveying guide wire and arranged on the outer side of the first intercepting filter screen in a sleeving mode, the near end of the second intercepting filter screen is connected to the far end of the wall-attached support, and the far end of the second intercepting filter screen is connected to the conveying guide wire in a sliding mode. The thrombus or plaque filtering device can effectively filter thrombus or plaque and prevent thrombus or plaque from flowing to the downstream of the blood vessel.

Disclosed herein are devices for mechanically removing clot and / or other material from implants implanted in the vasculature of a patient, and associated systems and methods. In some embodiments, a system for removing clot material from an implant—such as a stent—includes a clot treatment device configured to be deployed within the stent, a handle, and a first elongate member and a second elongate member coupling the clot treatment device to the handle. The first elongate member couples a first end portion of the clot treatment device to the handle, and the second elongate member couples a second end portion of the clot treatment device to an actuator of the handle. Actuation of the actuator is configured to move the second elongate member relative to the first elongate member to move the first and second end portions toward one another to radially expand the clot treatment device.

A device for therapeutic ablative treatment of residual plaque on, in, and / or surrounding a stent within a blood vessel of a subject includes a jacket configured for insertion within a stent within a blood vessel of a subject. The device further includes an ultrasound transducer located within the jacket and having at least one active element oriented to deliver ultrasound energy in a radial and / or axial direction of the jacket from within the stent to ablate the residual plaque.

A modular catheter system including a sheath projecting distally from a delivery catheter having a main body module An inner core module carrying a stent thereon, the inner core being axially movable through the main body of the delivery catheter and the delivery catheter sheath, a handle member supported by the main body of the delivery catheter, the handle member being selectively axially engageable with the inner core such that the handle member and the inner core move together in an axial direction when the handle member is engaged with the inner core; and an adjustment member supported by the main body, the adjustment member being configured such that rotation of the adjustment member causes the adjustment member to move axially along the main body by either axially sliding the handle member relative to the main body or by rotating the adjustment member.

The invention relates to an intracavity implantation system which comprises an intracavity prosthesis, the intracavity prosthesis has a radial expansion state and a radial contraction state, the intracavity prosthesis comprises a covered stent, a valve prosthesis and a flexible connecting pipe, the covered stent is of a tubular structure and comprises a main body section and a reducing section which are communicated with each other, and the valve prosthesis is arranged in the main body section. The main body section and the reducing section are arranged in the axial direction of the covered stent, the cross section area of the near end of the reducing section is smaller than that of the far end of the reducing section, the covered stent is further provided with a window penetrating through the side wall of the covered stent, and at least part of the area of the window is located in the reducing section; the valve prosthesis comprises a valve support and an artificial valve leaflet connected to the interior of the valve support. The flexible connecting pipe is of a tubular structure defined by a flexible film, the far end of the flexible connecting pipe is connected with the reducing section, the near end of the flexible connecting pipe is connected with the valve prosthesis, and the two axial ends of the flexible connecting pipe are communicated with the covered stent and the valve prosthesis respectively. In the implanting process of the endoluminal prosthesis, the relative position of the valve prosthesis and the covered stent can be adjusted according to the lumen structure, and the endoluminal prosthesis can better adapt to various lumen structures. In addition, due to the arrangement of the flexible connecting pipe, the risk that the far end of the valve prosthesis is driven to expand and deform due to expansion of the covered stent can be reduced, force generated in the expansion process of the valve prosthesis is not prone to being transmitted to the covered stent, and therefore the risk that coronary blood flow is blocked due to expansion of the near end of the covered stent can be reduced.

The utility model provides an electronic atomization device which comprises a liquid storage cavity. The liquid guide element is used for sucking the liquid matrix from the liquid storage cavity; the heating element is used for heating the liquid matrix absorbed by the liquid guide element to generate aerosol; the bracket surrounds and supports the liquid guide element; a first containing cavity facing the liquid storage cavity is defined in the support, and the liquid guide element is contained in the first containing cavity. A first cavity is defined in the outer side surface of the support and at least partially surrounds the first containing cavity. The support is further provided with a communicating hole penetrating from the first containing cavity to the first cavity, and the first cavity is communicated with the liquid guide element through the communicating hole. And the ventilation channel provides a flowing path for air to enter the liquid storage cavity from the first cavity so as to adjust the pressure in the liquid storage cavity. According to the electronic atomization device, the liquid guide element can adapt to the pressure change of the liquid storage cavity, so that the absorbed liquid matrix flows out of the first cavity through the communicating hole, or the first cavity collects the liquid matrix overflowing from the ventilation channel and flows back to the liquid guide element to be absorbed again.

The invention discloses a patient venipuncture auxiliary guiding device based on intelligent visual identification, the device is provided with a limb placing plate, the limb placing plate comprises a bottom plate and a silica gel lining plate, and a comfortable placing position can be provided for the limbs of a patient. The linear guide rail is installed on the right side of the top of the limb placing plate. The electric control sliding block can slide on the rail. The Z-axis lifting mechanism is connected with the electric control sliding block, the servo motor drives the lead screw to rotate, and the movable sleeve drives the right-angle type blood vessel imaging mechanism to ascend and descend in the vertical direction. The right-angle type blood vessel imaging mechanism is composed of two supports, a top blood vessel imager and a side blood vessel imager are embedded in the supports, imaging ports face the upper surface and the side face of the limb to be punctured respectively, and the direction and the depth of blood vessels can be clearly shown. In addition, a controller is installed on the side wall of the bottom plate and can control an electric control linear guide rail, an electric control sliding block and a servo motor, medical workers are assisted in accurately finding the blood vessel position, and the success rate of venipuncture is increased.

A transcatheter valve prosthesis including a tubular stent, a prosthetic valve component disposed within and secured to the stent, and a centering mechanism coupled to and encircling an outer surface of the tubular stent. The centering mechanism includes a self-expanding centering ring having an expanded diameter in the expanded configuration that is greater than an expanded diameter of the tubular stent in the expanded configuration and a plurality of self-expanding spokes radially extending between the tubular stent and the centering ring. The centering mechanism may include a base ring and / or a skirt. Alternatively, the centering mechanism includes a plurality of self-expanding loops. When each loop is in a delivery configuration the loop has a straightened profile that proximally extends from a proximal end of the tubular stent. When each loop is in an expanded configuration the loop has a U-shaped profile radially spaced apart from the tubular stent.

The invention discloses a spleen artery blood flow limiting stent and a using method, and particularly relates to the technical field of medical instruments.The spleen artery blood flow limiting stent comprises a supporting stent and a flow limiting stent, the supporting stent is arranged outside the flow limiting stent in a sleeving mode, the two ends of the flow limiting stent are fixedly connected with the inner side wall of the supporting stent, and the flow limiting stent is a covered stent; the flow limiting support comprises a contraction section and an expansion section, the contraction section and the expansion section are fixedly connected and communicated, and splenic artery blood flow in the supporting support flows in from the contraction section and flows out from the expansion section. According to the invention, spleen blood perfusion after partial spleen artery embolism operation can be reduced, and recurrence of splenic hyperfunction is reduced.

The invention discloses a high-pressure air flow uniform disturbance device for an anti-freezing arch dam in an alpine region, and relates to the technical field of anti-freezing of arch dams, the high-pressure air flow uniform disturbance device comprises a fixing frame, sleeves are rotatably connected to the interiors of a plurality of supports, supporting plates are fixedly connected to the two sides of the bottoms of the supports, and connecting plates are fixedly connected to the bottom ends of the two supporting plates; a threaded rod is slidably connected to the interior of the sleeve, a rotating plate is rotatably connected to the bottom end of the threaded rod, a supporting plate is fixedly connected to the bottom of the rotating plate, a rotating pipe is rotatably connected to the interior of the supporting plate, a spray head is fixedly connected to the top end of the rotating pipe, and a plurality of blades are fixedly connected to the outer side of the spray head in an annular array mode; according to the high-pressure air flow uniform disturbance device of the anti-freezing arch dam in the alpine region, turbulent flow is formed in water, the disturbance effect of high-pressure air flow is further improved, the anti-freezing effect of the water surface is improved, the water surface is stirred through the rubber elastic strips, water flow near the water surface is turned over, and the anti-freezing effect is improved.

A microcirculation reconstruction bone implant capable of generating internal stress comprises a support shell and a support inner core. The support inner core is sleeved with the support shell, and the support shell and the support inner core form a matched structure. The stent shell is located between the bone tissue and the stent inner core, and the stent shell generates elastic deformation to generate internal stress and applies the internal stress to the surrounding bone tissue when the stent is implanted and loaded; a microcirculation reconstruction passage is also loaded on the stent inner core; by adopting a mode that the stent inner core is matched with the stent shell, the stent inner core is matched with the stent shell to form an elastic effect, so that internal stress can be continuously applied to bone tissues in postoperative application to promote bone growth and integration; and a complex stress environment can be adaptively adjusted, so that the stress compatibility between the implant and a bone tissue is ensured, new intraosseous circulation is established, and the postoperative healing effect after the implant is applied is promoted.

The utility model relates to the technical field of medical instruments, in particular to a cross-shaped bronchial valve. The cross-shaped bronchial valve comprises a main body support (1) and a one-way valve (2), the main body support (1) and the one-way valve (2) are integrally connected, and the one-way valve (2) is located in the main body support (1). The utility model has the advantages of simple manufacturing process, high yield and obvious treatment effect.

The present invention provides an individualized thoracic aortic stent system. The individualized thoracic aortic stent system includes an aortic arch stent and an ascending aortic stent. The anchoring area of the aortic arch stent is spliced and implanted into the ascending aortic stent, and the anchoring area of the ascending aortic stent is used as the anchoring area of the system. A first branch hole is pre-opened in the area of the aortic arch stent for connecting a branch stent, and the opening areas of the second branch hole and the third branch hole are locked with the first branch hole as a reference point, and the second branch hole and the third branch hole are opened in the opening areas. A movable, deformable or special-shaped framework structure is arranged in the opening area of the aortic arch stent. Through the splicing between the aortic arch stent and the ascending aortic stent, the anchoring area of the aortic arch stent is arranged in the ascending aortic arch stent, and the anchoring area of the ascending aortic stent is used as the anchoring area of the system, so that the anchoring area is moved forward to avoid the vascular branch fork, enabling the system to adapt to individuals who were previously unsuitable for anchoring.

The invention discloses a disposable suture type circumcision anastomat which solves the problems that in the prior art, during circumcision, prepuce is large in wandering degree, fixing operation is difficult, and the steps of suturing a prepuce wound are tedious. The device comprises a needle and thread support arranged on a penis coronary sulcus in a sleeving mode, a plurality of suturing mechanisms arranged in the needle and thread support in a sliding mode, absorbable sutures arranged in the suturing mechanisms and used for suturing a prepuce wound, a driving device arranged on the needle and thread support and used for driving the suturing mechanisms to move in a reciprocating mode, and a thread connecting support arranged on the needle and thread support. And the suture fixing bracket is sleeved on the penis and is used for fixing the absorbable suture sutured on the wound. According to the needle and thread support, the prepuce can be conveniently fixed during circumcision, the suturing mechanism is driven by the driving device to suture the wound of the prepuce, the wound of the prepuce can be conveniently sutured and fixed, and meanwhile the operation step of suturing the wound of the prepuce can be simplified.

The utility model discloses a splenic artery blood flow limiting support, and particularly relates to the technical field of medical instruments, the splenic artery blood flow limiting support comprises a supporting support and a flow limiting support, the supporting support is sleeved outside the flow limiting support, two ends of the flow limiting support are fixedly connected with the inner side wall of the supporting support, the flow limiting support is a covered stent, and the flow limiting support comprises a contraction section and an expansion section. The contraction section and the expansion section are fixedly connected and communicated, and splenic artery blood flow in the supporting stent flows in from the contraction section and flows out from the expansion section. The splenic artery embolism postoperative spleen blood perfusion can be reduced, and the recurrence of splenic hyperfunction is reduced.

The invention provides a double-hole mitral valve replacement implant which comprises a wrapping cloth outer support and an inner valve support, the wrapping cloth outer support is arranged on the periphery of the inner valve support in a sleeving mode, and the inner valve support comprises a first inner support and a second inner support which are arranged side by side. A first bioprosthetic valve and a second bioprosthetic valve are respectively arranged in the first inner stent and the second inner stent; a containing gap is formed among the wrapping cloth outer support, the first inner support and the second inner support, a flow blocking skirt edge is arranged in the containing gap, one side of the flow blocking skirt edge is connected with the inner wall of the wrapping cloth outer support, and the other side of the flow blocking skirt edge is arranged on the periphery of the first inner support and the periphery of the second inner support in an attached mode. A tightening line is arranged on the edge, close to the first inner support or the second inner support, of the flow blocking skirt edge in a penetrating mode. The problems of perivalvular leakage and leakage of a fit clearance between the inner support and the outer support are effectively solved, and high safety is achieved.

A replacement heart valve comprises a unibody, folded, double-wall stent, with a stent cover and a leaflet valve attached to the inner lumen of the stent. The heart valve is delivered using a multi-pulley, suture-based stent restraint assembly provided by fixed guide openings or structures along the distal end of the delivery system that independently permits expansion of the distal and proximal ends of the outer wall of the stent, and control of the inner wall expansion simultaneously with or separately from the expansion of the outer wall.

The utility model relates to the technical field of intravascular stents, and provides an intravascular stent which comprises a stent body, the stent body comprises a plurality of sets of wave-shaped supporting rings and a plurality of connecting rods, the connecting rods are connected between every two adjacent sets of wave-shaped supporting rings, the stent body is conical, the diameter of the first end is larger than that of the second end, and the connecting rods are arranged from the first end to the second end. The length of the unfolded waveform support rings is gradually reduced, the design of the waveform support rings not only ensures the radial strength of the stent, but also enhances the flexibility and adaptability of the stent, so that the stent can be better attached to the blood vessel wall, two adjacent sets of waveform support rings are connected through a plurality of connecting rods, and the overall stability and structural integrity of the stent are ensured. The main body of the stent is conical, so that the stent can better adapt to the physiological structural characteristics of a conical blood vessel, the gradual transition of radial supporting force of the stent at different positions is ensured, the excessive compression on the blood vessel wall is reduced, the risks of stent breakage and restenosis in the stent are reduced, and the use safety performance is improved.

The invention discloses an intravascular stent bending torsion fatigue test device, and belongs to the technical field of fatigue test machinery. The intravascular stent bending torsional fatigue test device comprises a rack, the rack comprises a door-shaped support, a back plate and a base, the door-shaped support is provided with a bending load module, the bending load module comprises a first stepping motor, the output end of the first stepping motor penetrates through the back plate and is fixedly connected with an eccentric wheel through an extension shaft, and a pair of sliding blocks is additionally arranged; a sliding rail is arranged on the inner side of the door-shaped support, the sliding blocks are arranged on the sliding rail, a cantilever is connected between the pair of sliding blocks, the top of the cantilever is connected with the lower side of the top of the door-shaped support through a spring, a plurality of first loading connectors are arranged on the front face of the cantilever, and a torsion module is additionally arranged. The fatigue durability under bending-torsion dual loads can be tested, and the fatigue performance of the stent under the condition of blood vessel deformation during limb movement can be truly simulated.