23 results about "Stent design" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

The utility model discloses a hollowed-out type support design convenient to clean, and relates to the technical field of false tooth supports, the hollowed-out type support design convenient to clean comprises a false tooth body, two ends of the false tooth body are respectively provided with an annular support and a clamping frame, an extrusion assembly is arranged between two sides of the annular support, and the extrusion assembly comprises an inner sliding rod, an outer sliding sleeve, an extrusion block and a spring. And the clamping frame is mounted on the end surface of the false tooth body through a turnover assembly. According to the hollowed-out support convenient to clean, by arranging the extrusion assembly, two extrusion blocks can be extruded to drive the inner sliding rod to move, so that the two sides of the annular support are separated from abutting connection with the upper jaw of the oral cavity, the clamping frame is overturned upwards through the overturning assembly, the end face tightly attached to teeth is exposed, and therefore a wearer can comprehensively clean a false tooth structure by himself / herself; the phenomenon of oral diseases caused by the fact that the original false tooth structure is easy to hide dirt and breed bacteria is avoided, and the practicability of the device is enhanced.

1. The name of the design product: pot support and its main body. 2. The use of the design product: pot support is used to support pots, and the main body of the pot support is used to install supporting feet and the like. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: design 1 perspective view 1. 5. The top view and the bottom view of each design are symmetrical, and the left view and the right view are symmetrical, so the top view and the left view of each design are omitted. 6. Design 1 is designated as the basic design. 7. Other circumstances that need to be explained: design 1 requests protection for pot support. Designs 2 and 3 are partial designs, and the main body of the pot support is requested to be protected, specifically the part represented by the solid line.

The present invention relates to a precision automated system, particularly for robot-assisted minimally invasive surgery, comprising an instrument holder with five degrees of freedom adapted to support and actuate a tool, especially a surgical tool, for accessing difficult areas of the surgical field. The instrument holder comprises a shaft terminating in a controlled flexible portion and a tool holder including means for orientation and rotation, all of these movements being controllable independently of each other. The instrument holder's design features provide it with the rigidity necessary for manipulating tissues within the surgical field during the execution of a surgical procedure.The instrument holder is designed to be mounted on a robot with up to 6 degrees of freedom, also including a module with motors to drive the 5 degrees of freedom of the instrument holder, which itself does not contain sensitive electronic components and can be sterilized by various techniques. Figure 1.

The invention relates to a partial covered stent for a biliopancreatic duct drainage Notes operation, which comprises an operating handle and a stent body, and the stent body is arranged at the tail end of the operating handle; a first fixing ring is arranged at one end of the bracket body; a connecting support is arranged at the right end of the first fixing ring, and covering films are arranged in the connecting support and the first fixing ring. A second fixing ring is arranged at the right end of the connecting support, the upper end of the second fixing ring is cup-shaped, and the lower end of the second fixing ring extends outwards to form a horn shape. The stent has the advantages that the shape design is reasonable, the horn mouth is expanded in a step shape, the compliance is good, the fixation is firm, the partial covered stent design is adopted, the advantages of a covered stent and a non-covered stent are achieved at the same time, compared with the prior art, the one-step stent deployment process is simpler, the operation time and the requirement for re-intervention are obviously reduced, and the operation efficiency is improved. According to the utility model, the occurrence of adverse events and discomfort of patients are reduced, the risk of radiation exposure is reduced, and the supports of various specifications are arranged, so that various requirements of clinical operation are met.