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39 results about "Stent design" patented technology
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A method and system for predicting aneurysmal occlusion resulting from flow diverting stents
PCT designated stage expiredWO2025106976A1Mechanical/radiation/invasive therapiesImage analysisPatient dataNuclear medicine
Aneurysmal occlusion prediction resulting from stents, and flow diverting stents in particular, is determined using the system and the method of the present invention. The system utilizes existing or new patient data, such as imaging data, vitals, heart rate, and medications, in conjunction with a vessel segmentation algorithm to model outcomes for the patient. The system can be used to evaluate a specific stent choice for the patient, evaluating anticoagulation therapy for a patient with a flow diverter, and evaluating optimal stent design for a patient.
Owner:JOHNS HOPKINS UNIVERSITY
Tracheal stent mechanical property optimization design method based on multi-scale finite element
InactiveCN120805586AMedical simulationGeometric CADElement modelPhysical medicine and rehabilitation
The invention relates to the technical field of medical instrument design, in particular to a tracheal stent mechanical property optimization design method based on multi-scale finite elements. According to the mechanical property optimization design method for the tracheal stent provided by the invention, microstructure parameter evolution and macroscopic physiological environment response are deeply integrated through a multi-scale finite element model, and a time-varying material attribute algorithm module is originally introduced to realize dynamic mechanical coupling simulation in a degradation process; in combination with an intelligent early-warning mechanism for dissection partition differentiation erosion boundaries and structural failure, collaborative optimization of mutual exclusion performance indexes such as flexible contact stress distribution of radial supporting force of the stent and long-term structural integrity is precisely coordinated, and a Pareto optimal solution is output on the premise of guaranteeing biocompatibility constraint; according to the method, core technical obstacles of micro effect distortion and dynamic performance prediction deficiency in traditional design are fundamentally solved, and a personalized stent design scheme with high reliability, low complication risk and long service cycle is provided for clinic.
Owner:QINGDAO HUANGDAO DISTRICT PEOPLES HOSPITAL
Preoperative CT (Computed Tomography) guided thoracic stent parameterization customization system
The invention relates to the technical field of medical image processing and computer aided design, in particular to a preoperative CT-guided thoracic stent parameterization customization system, which comprises an image processing module for acquiring and preprocessing a patient trachea CT image; the contour segmentation module is used for carrying out trachea contour segmentation on the preprocessed CT image and carrying out correction to obtain trachea three-dimensional contour data; the parameter extraction module is used for extracting morphological parameters of the trachea; the modeling optimization module is used for establishing a stent model according to the morphological parameters of the trachea, constructing a comprehensive objective function which aims at minimizing the geometric matching error of the stent and meeting the mechanical property of the stent, and optimizing the stent model based on the objective function to obtain an optimal stent model; and the parameter output module is used for outputting support design parameters. According to the method, the customization precision and efficiency of the thoracic cavity stent are improved, and the influence of subjective experience factors in a traditional customization method is reduced.
Owner:TONGJI HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI TECH
Biological bone scaffold design method of tetragonal symmetric lattice structure based on extremely small curved surface
PendingCN120347992AGeometric CADAdditive manufacturing apparatusMaterial transportBiomedical engineering
According to the method for designing the biological bone scaffold of the tetragonal symmetric lattice structure based on the minimal curved surface, reconstruction is performed based on a classic three-period minimal curved surface lattice structure implicit function for the biological bone scaffold, and a novel implicit function of the three-period minimal curved surface lattice structure is obtained; and judging whether a lattice structure obtained on the basis of the reconstructed implicit function meets a set constraint condition or not, and if so, designing and preparing the biological bone scaffold by using the reconstructed implicit function. Therefore, the biological bone scaffold prepared from the tetragonal symmetrical lattice structure has good mechanical properties and material transport performance on the premise of light weight.
Owner:CHONGQING UNIV
Method for designing bionic femoral stent based on fusion of lattice structure and TPMS structure
The invention discloses a method for designing a bionic femoral stent based on fusion of a lattice structure and a TPMS structure, and belongs to the technical field of bionic bone stents. The method comprises the following steps: respectively creating a Diamond unit homogeneous porous structure CAD model and an Iso Truss unit homogeneous porous structure CAD model; creating a Ramp fusion function, and fusing the homogeneous porous structure of the Diamond unit and the homogeneous porous structure of the Iso Truss unit to generate a preliminary ITD fusion CAD model; then fusing the preliminary ITD fusion CAD model and a newly established cylinder III by using a Boolean intersection instruction to form a final ITD fusion CAD model, and finally dividing a finite element simulation grid model and outputting an inp-format simulation model file; importing the simulation model file in the inp format into HyperMesh software for repairing, and dividing grids to export the model in the inp file format. The bionic bone scaffold designed by the invention has higher bearing capacity and stability, and the formed mechanical property gradient adapts to a complex mechanical environment. Meanwhile, cell adhesion, proliferation and differentiation can be promoted, nutrient substances can be transported, metabolic waste can be discharged, and the cell survival rate can be increased.
Owner:KUNMING UNIV OF SCI & TECH
System and method for model-based stent design and placement
ActiveUS12462379B2Medical simulationImage enhancementGraphical user interfaceComputer graphics (images)
Systems and methods are provided for designing a stent for placement within an airway of a patient. Computer executable instructions are executable by a processor to provide an image segmenter, a graphic user interface, and a model generator. The image segmenter segments at least one image of a region of interest to provide a three-dimensional airway model representing at least a portion of the airway. The graphic user interface prompts a user to select a plurality of locations at an within the airway model and a corresponding plurality of diameters for the plurality of locations. The model generator constructs a stent model from the selected locations and diameters.
Owner:THE CLEVELAND CLINIC FOUND +1
Test strip holder
A holder (10) for test strips (100), comprising a base plate (11), characterized in that said holder (10) is designed to be held in position on a surface of a treatment chamber by its own weight, and in that it comprises two first walls (12) projecting with respect to an upper surface (16) of the base plate (11) and opposite each other, extending along a transverse axis (Y) of the test strip (100) and at a distance at least equal to a first length (L1) of the test strip (100) along a longitudinal axis (X) of the test strip (100) perpendicular to the transverse axis (Y), thereby delimiting a receptacle (15) comprising a bottom wall (13) lying on a plane substantially parallel to or substantially coinciding with a plane defined by the upper surface (16), each first wall (12) being designed to project beyond the receptacle (15),so that a respective end portion (101) of the test strip (100) located in the receptacle (15) is covered.,
Owner:STEELCO
face mask
1. The name of this design product: face mask. 2. Purpose of this design product: for wearable sun protection. 3. The key design features of this product include adjustable elastic hollow ear straps, a double-layer structure that fits the cheeks, a film support design that extends from the bridge of the nose to the chin, and a non-slip support design that extends from the hairline to the cheeks. 4. The picture or photo that best illustrates the design points: Usage status diagram 2. 5. The omitted views have been displayed in other views, omitting the top view, bottom view and rear view. 6. Other circumstances that require explanation: The prosthetic model in the design product is a background object and does not belong to the content of the design for which protection is requested.
Owner:SHENZHEN QUANMAN TECH CO LTD
A design method of acetabular revision guiding support based on image modeling
ActiveCN120748748BSimple digital solutionsEfficient digital solutionsMedical simulationJoint implantsBone TrabeculaeBone defect
The application provides a parameter design method of a acetabular revision guiding support based on image modeling, and belongs to the field of medical instruments, and comprises the following steps: establishing an acetabular coordinate system, and extracting geometric parameters of medical images of a bone defect area; defining a plurality of bone trabecula metal acetabular cup outer cup abduction angle, anteversion angle and vertical upward height, and coupling to obtain a limited parameter combination; respectively calculating the contact volume ratio η of the bone trabecula metal acetabular cup and the bone defect area and the distance Doffse from the rotation center of the outer cup to the healthy rotation center; screening a group of optimal parameters according to the numerical values of η and Doffse; and designing a guiding support for the outer cup according to the optimal parameters. The application provides a simple, efficient and accurate digital solution for Paprosky III type acetabular defect revision, and the core geometric quantification method and guiding support design can be expanded to other complex bone defect repair, and has significant clinical application value and technical foresight.
Owner:BEIJING LIDAKANG TECH
Method for integrally forming a composite material hollow stent
The application provides a preparation method of integrally forming a composite hollow support, a core mold rod is used as a backbone, a rubber layer is used as a skin to cover the periphery of the metal rod body of the core mold rod to form a forming core mold, the overall shape of the forming core mold is consistent with the shape of the composite hollow support to be prepared; a support skin is laid on the surface of the forming core mold to form a preform; the preform is placed in the internal cavity of a mold, is sent into a forming equipment to be solidified and formed, then the mold is removed, the metal rod constituting the core mold rod is disassembled and separated from the rubber layer, and finally the rubber layer in the channel is removed to obtain the hollow composite support. The forming process is simple in operation and good in repeatability, realizes the integrated forming of the design and manufacturing of the composite hollow support, and improves the production efficiency and forming performance.
Owner:AVIC ARMOR TECH CO LTD
Holder for the detachable, vibration- and twist-resistant fixing of a dosing spoon in a container
A dosing spoon storage system for a container (50), characterized in that the combination comprises: a) a holder (10) designed as a separate insert part and which can be inserted into the opening of the container (50) by positive locking or overlapping, wherein the holder (10) has a front receiving and guiding means (11) and two separate, rear, elastically spring-loaded locking means (12a, 12b); and b) a measuring spoon (30) which provides a front engagement area (31) for receiving by the guide means (11) and two spaced-apart contour surfaces (32a, 32b) on its handle for receiving the locking means (12a, 12b) of the holder; wherein the secure locking of the measuring spoon (30) in the holder (10) is achieved only by the combination of the initial, guided insertion of the front engagement area (31) into the front guide means (11) and the subsequent, defined engagement of the elastically spring-loaded locking means (12a, 12b) into the contour surfaces (32a, 32b) of the measuring spoon handle.
Owner:HOCHHOLDINGER DIRK
Tissue collection bag
ActiveDE102024106670B3Biological substance pretreatmentsSurgical needlesPeristaltic pumpTissue Collection
The invention relates to a tissue collection bag (1) for a morcellation system, comprising two outer layers (2, 3) of a flexible sheet-like structure made of a liquid-impermeable material enclosing an inner volume and connected to one another at their edges, an inlet connection (4) for supplying liquid carrying tissue particles, an outlet connection (5) for discharging the liquid, and a filter device for retaining the tissue particles in the inner volume. The invention proposes a three-layer structure of the tissue collection bag (1), in which at least one intermediate layer (6) of a flexible sheet-like structure made of liquid-permeable and tissue-particle-impermeable material, located between the two outer layers (2, 3), forms the filter device and divides the inner volume into at least two chambers (7, 8), wherein the inlet connection (4) opens into one chamber (7) and the outlet connection (5) opens into the other chamber (8).The invention also relates to a hose system for a peristaltic pump (20), comprising a peristaltic hose (15) and a support, wherein the support is designed as a frame (16) with holding elements (17, 18) which hold the peristaltic hose (15) in an arcuate course on the frame (16), and a peristaltic pump (20) designed to receive the support of the hose system.
Owner:ACTIVE MEDICAL XCELLENCE GMBH
Implants for cartilage and related devices and methods
The present disclosure relates to a transplantable implant comprising a biocompatible scaffold configured to be degraded over time when implanted to cartilage of a patient, the biocompatible scaffold comprising a plurality of pores, and a plurality of chondrocytes incorporated into the scaffold. In some embodiments, the implant has a longitudinal length to be implanted to an implantation hole created on the cartilage, wherein the implantation hole has an implantation depth, wherein the ratio of the full longitudinal length to the thickness of the cartilage is about 3 or less.
Owner:BIOGEND THERAPEUTICS CO LTD
A steel pipe arch rib installation support design method and system considering load combination
The application discloses a steel pipe arch rib installation support design method and system considering load combination, and the method comprises the following steps: firstly, defining arch rib installation multi-source load and dividing standard combination and basic combination, establishing a support and arch rib collaborative stress integral analysis model, combining arch rib segments and bridge surface constraints to determine support topology, and configuring component parameters to form an initial scheme; secondly, extracting time-varying load effects at each construction stage, constructing a multi-objective optimization function model, and determining a global optimal objective function; then, establishing a coupling relationship between support deformation and arch rib linear, and solving optimal pre-camber through inverse analysis iteration to eliminate linear error; finally, carrying out multiple checking on the support, optimizing rod parameters and structure in combination with buckling analysis, establishing a collaborative mechanical model to complete whole-process checking, and determining final design parameters. The method realizes dual protection of arch rib installation precision and structural stability.
Owner:CCCC THIRD HIGHWAY ENG CO LTD
Tissue collection bag with tube system for peristaltic pumps
PCT designated stageWO2025186435A8Bioreactor/fermenter combinationsBiological substance pretreatmentsPeristaltic pumpTissue Collection
The invention relates to a tissue collection bag (1) for a morcellation system, comprising two outer layers (2, 3) of a flexible sheet-like structure made of a liquid-impermeable material which enclose an internal volume and are connected to each other at their edges, an inlet connection (4) for supplying liquid that carries tissue particles, an outlet connection (5) for discharging the liquid, and a filter device for retaining the tissue particles in the internal volume. The invention proposes a three-layer structure of the tissue collection bag (1) in which at least one intermediate layer (6) of a flexible sheet-like structure made of liquid-permeable material impermeable to the tissue particles lies between the two outer layers (2, 3), forms the filter device and divides the internal volume into at least two chambers (7, 8), wherein the inlet connection (4) opens into one chamber (7) and the outlet connection (5) opens into the other chamber (8). The invention further relates to a tube system for a peristaltic pump (20), comprising a peristaltic tube (15) and a support, the support being designed as a frame (16) with holding elements (17, 18) which hold the peristaltic tube (15) on the frame (16) in an arc shape, and to a peristaltic pump (20) designed to receive the support of the tube system.
Owner:ACTIVE FIBER SYST GMBH
Covered stent system for curing total aortic dissection
The invention provides a covered stent system for curing total aortic dissection, which comprises a main stent, a large crevasse plugging device and a non-clogging blood flow branch stent, the main stent is used for blocking the crevasse, the main stent comprises a main stent skeleton and a micropore covering film, the large crevasse plugging device is wrapped in the main stent, and the micropore covering film is arranged in the main stent skeleton. The microporous stent is used for supporting the structure of a lesion position with a large crevasse, and the microporous stent is used for enabling some small branch passages to be unblocked; however, if a large crevasse exists at a non-branch position, the micropore of the micropore stent still causes the expansion of the interlayer, and at the moment, a large crevasse plugging device needs to be used. According to the invention, full aorta continuous treatment is realized: the main stent is designed to cover the whole course of thoracico-abdominal aorta and can be connected with an implanted individualized thoracico-aorta stent system to form a complete treatment scheme of the full aorta.
Owner:HEFEI ZHONGKE RUIWO MEDICAL TECH CO LTD
Enhanced stock stents based on population modeling of tubular anatomical structures
Technologies as described herein are directed towards generating optimized stent designs for treatment of tubular anatomical structures. In an exemplary computing system, the system obtains imaging data comprising images representative of anatomical structures. The system then generates a plurality of models based upon the imaging data. The models are then clustered based upon similar characteristics of the models. Certain fit parameters are applied to the models in each cluster and an optimized stent shape is generated for each cluster, wherein each optimized stent shape is representative of the models within the cluster.
Owner:VISIONAIR SOLUTIONS LLC +1
Biodegradable stent
Medical stent designs are disclosed. An example stent includes a tubular scaffold having a proximal end and a distal end. The tubular scaffold includes a first filament extending between the proximal end and the distal end, the first filament including a first biodegradable region positioned adjacent to a second biodegradable region. Further, the first biodegradable region includes a first biodegradable material, the first biodegradable material having a first rate of degradation. The second biodegradable region includes a second biodegradable material, the second biodegradable material having a second rate of degradation, wherein the first rate of degradation is different from the second rate of degradation.
Owner:BOSTON SCIENTIFIC SCIMED INC
Stent design for enhanced drainage
A polymeric stent is adapted for placement within a body cavity to provide a primary drainage passageway and a secondary drainage passageway for the body cavity. The polymeric stent includes a polymeric tubular body including a first end region, a second end region and an intervening intermediate region. The polymeric tubular body has a remembered configuration in which the intervening intermediate region of the polymeric tubular body forms a plurality of tightly arranged helical coil windings that define the primary drainage passageway and a delivery configuration different from the remembered configuration when constrained by a delivery device.
Owner:BOSTON SCIENTIFIC SCIMED INC
Support component for a stool
Owner:BOCK 1
Design method of artificial aortic valve and artificial aortic valve
The invention provides a design method of an artificial aortic valve and the artificial aortic valve. The artificial aortic valve comprises a valve support and three valve leaflets. And the three valve leaflets are fixed on the valve bracket. The design method comprises the following steps: forming a shape curve of the valve stent, and generating the valve stent according to the shape curve of the valve stent. Based on the shape curve of the valve stent, a parameterization method of a power equation is adopted, and free boundary curves of the Tai Chi-like shape of the three valve leaflets are formed respectively. Based on the shape curve of the valve stent and the free boundary curve corresponding to the valve leaflets, abdomen curves of the three valve leaflets are respectively formed. And according to the shape curve of the valve stent, the free boundary curves of the three valve leaflets and the abdomen curves of the three valve leaflets, generating the three valve leaflets in a closed state. The obtained artificial aortic valve is better in performance.
Owner:TSINGHUA UNIVERSITY
An appendage stent
ActiveCN224403827UCompliant with grip mechanicsAchieve one-handed operationReoperative surgeryEndoscope
The utility model discloses an appendix support, including leading in device, moving device and support, the movable moving device is arranged in the leading in device, the output of leading in device is provided with the support, the moving device can drive the support to export outward through leading in device, above all, can prevent the component unexpected and hurt that comes out, can carry out the fine adjustment of support to the support design and fit appendix lumen structure, can better fixed, and the device simple operation realizes the single -handed operation of main knife doctor, and the other hand can operate endoscope, need not auxiliary tool, improve operation efficiency and accuracy.
Owner:KANGLE COUNTY PEOPLES HOSPITAL
Aorta covered stent structure design method based on mechanical property multi-objective optimization
The invention discloses an aorta covered stent structure design method based on mechanical property multi-objective optimization, which comprises the following steps: performing parametric modeling based on key geometric parameters of a covered stent to obtain different stent models; simulating pressing and bending processes through finite element simulation to obtain radial supporting force and straightening force, enabling the radial supporting force to be equivalent to uniformly distributed pressure on the outer surface of the stent, and fitting to obtain a pressure-radius relationship of each stent model; calculating a blood vessel pressure-displacement relation without a stent based on a Lame formula, and iterating to obtain the compliance of a stent-blood vessel combination; performing multi-objective optimization on the radial supporting force, the straightening force and the stent-blood vessel combination compliance by adopting a multi-objective optimization method based on a genetic algorithm to obtain different stent design parameters; through stent release finite element simulation and hemodynamics simulation, the effects in the aspects of vascular wall stress distribution and hemodynamics are verified, the influence on the heart afterload is evaluated, and the structural design of the aorta covered stent is completed.
Owner:TIANJIN UNIV
Stent design for enhanced drainage
A polymeric stent (10) adapted for placement within a body cavity to provide a primary drainage passageway (40) and a secondary drainage passageway (20) for the body cavity. The polymeric stent includes a polymeric tubular body including a first end region (14), a second end region (16) and an intervening intermediate region (18). The polymeric tubular body has a remembered configuration in which the intervening intermediate region (18) of the polymeric tubular body forms a plurality of tightly arranged helical coil windings (38) that define the primary drainage passageway (40) and a delivery configuration different from the remembered configuration when constrained by a delivery device.
Owner:BOSTON SCIENTIFIC SCIMED INC
Biodegradable stent
Medical stent designs are disclosed. An example stent includes a tubular scaffold having a proximal end and a distal end. The tubular scaffold includes a first filament extending between the proximal end and the distal end, the first filament including a first biodegradable region positioned adjacent to a second biodegradable region. Further, the first biodegradable region includes a first biodegradable material, the first biodegradable material having a first rate of degradation. The second biodegradable region includes a second biodegradable material, the second biodegradable material having a second rate of degradation, wherein the first rate of degradation is different from the second rate of degradation.
Owner:BOSTON SCIENTIFIC SCIMED INC
Intracardiac device
The present invention provides intracardiac devices and methods of implanting the same. The intracardiac devices have a collapsible stent design and include an axial pump to support cardiac function. The axial pump can feature a shaftless fluid actuator for enhanced efficiency in fluid transfer while reducing blood cell trauma. The intracardiac devices include valves that are closeable to seal implanted devices from a subject's anatomy. The intracardiac devices include a cleaning system configured to introduce and circulate cleaning solutions and therapeutics to implanted devices. The intracardiac devices are wirelessly powered and controlled. The intracardiac devices can be implanted using minimally invasive procedures without the need for open heart surgery.
Owner:YALE UNIVERSITY
Integrated dilatation balloon stent system
The utility model relates to the technical field of medical instruments and equipment, and discloses an integrated dilatation balloon support system which comprises a double-channel inner tube and an outer tube arranged outside the double-channel inner tube in a sleeved mode, and one end of the double-channel inner tube is connected with a traction head. The double-channel inner tube is sequentially sleeved with a balloon and an expansion support from the end close to the traction head to the end away from the traction head, and the balloon is communicated with one channel in the double-channel inner tube. According to the integrated dilation balloon support system, the balloon and the dilation support are designed on the same releaser, the guide wire can be guaranteed to penetrate through the double-channel design skill, dilation of the balloon can be achieved, most importantly, instruments for independently operating the balloon are not needed, and the effect of shortening operation time is achieved.
Owner:LISHUI CENT HOSPITAL
Partially covered stent for biliary and pancreatic duct drainage notes procedure
The application relates to a part-coated stent for biliary and pancreatic duct drainage Notes operation, which comprises an operating handle and a stent body, the tail end of the operating handle is provided with the stent body; one end of the stent body is provided with a first fixing ring; the right end of the first fixing ring is provided with a connecting stent, and the inside of the connecting stent and the first fixing ring is provided with a coating; the right end of the connecting stent is provided with a second fixing ring, and the upper end of the second fixing ring is cup-shaped, and the lower end extends outward in a trumpet shape. The application has the advantages that the shape design is reasonable, the trumpet mouth is enlarged in a stepped manner, the compliance is good, the fixation is firm, the part-coated stent design has the advantages of both the coated stent and the non-coated stent, compared with the prior art, the stent deployment process is simpler, the operation time and the requirement for re-intervention are significantly reduced, the occurrence of adverse events and the discomfort of patients are reduced, the risk of radiation exposure is reduced, and the stent with multiple specifications facilitates clinical operation of various requirements.
Owner:SHANGHAI FIRST PEOPLES HOSPITAL
Multi-level degradable artificial meninx repair stent and preparation method thereof
The invention discloses a multi-layer degradable artificial meninx repair stent and a preparation method thereof, the artificial meninx repair stent main body is of a three-layer structure, the inner layer is a directional nanofiber antibacterial layer, the middle layer is a disordered nanofiber leakage-proof layer, and the outer layer is a porous micron fiber layer with bone regeneration activity. The multi-level degradable artificial meninx repair stent designed by the invention can realize sustainable release of drugs, has the effects of promoting nerve repair and effectively preventing leakage of cerebrospinal fluid, and has blood compatibility and biocompatibility; the polypeptide has the characteristic of promoting osteogenesis, and has important application in wound healing, adhesion prevention and nerve repair tissue engineering.
Owner:THE FIRST MEDICAL CENT CHINESE PLA GENERAL HOSPITAL
Liftable sterilization support
The invention discloses a liftable sterilization support which comprises a support table top and an adjusting support, the adjusting support comprises a sliding support used for auxiliary supporting and a lifting support used for adjusting the height of the support table top, and an auxiliary structure is installed at the bottom of the adjusting support. Through the innovative design of the sliding and lifting support and the application of the clamping assembly, flexible height adjustment and stable fixation of the medical instrument sterilization support are achieved, and the space utilization rate, the operation convenience and the safety of the sterilization process are effectively improved.
Owner:RENHUAI HOSPITAL OF TRADITIONAL CHINESE MEDICINE