753 results about "Inner/Lumen Diameter" patented technology

A catheter comprises a catheter shaft having a fluid channel, an ultrasound transducer and a compliant balloon mounted on the catheter shaft and having an interior in fluid communication with the fluid channel and containing the ultrasound transducer. The compliant balloon includes a balloon wall having a working section radially surrounding the ultrasound transducer. The working section has a predetermined straightness when the working section has a first diameter and when the working section has a second diameter that is at least 2 mm greater than the first diameter. Other embodiments are also described and claimed.

The invention provides a degradable combined type tracheal stent and an implantation method, the degradable combined type tracheal stent comprises a plurality of rib plates which are coaxially arranged and are in an annular shape and soft bodies which are connected between every two rib plates and are in a net shape, and axial length adjustability and axial bending deformation of a stent main body are achieved through the soft bodies; the support further comprises a connecting part, the connecting part comprises a first connecting body arranged at the two axial ends of the support body and a second connecting body matched with the first connecting body, and the first connecting body and the second connecting body are matched to achieve axial detachable connection and combination between every two support bodies. The adjustable axial length of the stent main body, bionic axial bending deformation and stable connection and combination between every two stent main bodies are effectively realized. The invention further provides an implantation method of the degradable combined type tracheal stent, the implantation method comprises the steps of obtaining the size of the diseased trachea, determining the diameter and the combination number of the stent body, sleeving the diseased trachea and connecting the combination to complete implantation, and the method is easy to operate and can meet different requirements of clinical complex environments.

A stent, such as transluminal stent, is disclosed. The stent includes a tubular member with a proximal end, a distal end, and a central portion therebetween. The elongate tubular member comprises a scaffolding forming a plurality of cells and defining a lumen of the elongate tubular member. A proximal portion of the tubular member forms a retention member, wherein the diameter of the retention member is greater than the diameter of the central portion, and wherein a proximal end of the retention member includes an area of increased scaffolding density.

A cleat includes a base member with a base plate and two base member lugs. Each lug has a first inner diameter proximal to the base plate and a second, larger inner diameter distal from the base plate and each lug is threaded. A securing member has a top portion that connects two legs.Each leg is held within a lug by a screw and washer, the washer has a diameter that is greater than the first diameter and less than the second diameter. A spring within each lug urges the leg towards an extended position. A spring-loaded locking mechanism interfaced between the base plate and the top portion holds the top portion of the securing mechanism in a retracted position until an actuator of the spring-loaded latching mechanism is pressed, at which time, the top portion of the securing mechanism is released and moved into the extended position.

This application relates to prosthetic heart valves. Disclosed are embodiments of a radially collapsible and expandable prosthetic heart valve. The valve frame can have a tapered profile when mounted on a delivery shaft, with a smaller diameter at the inflow end portion than at the outflow end portion. The valve can include generally V-shaped leaflets, reducing the amount of material in the inflow end of the frame. An outer skirt can be secured to the outside of the inflow end portion of the frame, with longitudinal slack when the valve is expanded and lying flat against the frame when the valve is collapsed. An angularly woven inner skirt can be axially elongated with the frame. Side tabs adjacent the leaflets can extend through and be secured to window frame portions of the frame to form commissures. The window frame portions can be recessed radially inward relative to the surrounding frame portions when the valve is crimped on a delivery shaft.

The present disclosure relates to prosthetic valves that can be expanded to selected maximal diameters. In an example, a prosthetic valve assembly comprises a prosthetic valve having an annular frame, one or more expansion control rods disposed radially outward to the frame, and one or more flexible tension members extending circumferentially around the frame, and comprising one or more local loops wrapped around the corresponding expansion control rods. The flexible tension member is configured to radially expand to a first diameter when all local loops are wrapped around the corresponding expansion control rods, and expand to a second diameter greater than the first diameter, when one of the expansion control rod is retracted from the flexible tension member, thereby allowing the corresponding local loop to unravel.

A working end of a catheter includes at least one therapeutic element, such as a resistive heating element, usable to deliver energy for ligating, or reducing the diameter of, a hollow anatomical structure. In certain examples, the catheter includes a lumen to accommodate a guide wire or to allow fluid delivery. In certain embodiments, a balloon is inflated to place resistive element(s) into apposition with a hollow anatomical structure and to occlude the structure. Indexing devices and methods are also disclosed for successively treating portions of the hollow anatomical structure. In certain examples, marks along the catheter shaft provide visual verification to the physician of the relative position of the therapeutic element of the catheter. Embodiments of indexing devices may include pairs of rings and / or hinged arms that move a catheter a desired indexed position between successive treatments.

A spinal implant device includes a unitary strand extending from a first end to a second end. The unitary strand includes an exterior surface defining an infill volume with an infill structure. The exterior surface extends from the first end to the second end. A first bead is formed in the strand has a first diameter. The second bead is formed in the strand has a second diameter. At least one joint is formed in the strand between the first bead and the second bead. The at least one joint has a third diameter that is less than the first diameter and less than the second diameter.

Systems and methods for providing assistance to a surgeon during an implant surgery are disclosed. A method includes defining areas of interest in diagnostic data of a patient and defining a screw bone type based on the surgeon's input. Post defining the areas of interest, salient points are determined for the areas of interest. Successively, an XZ angle, an XY angle, and a position entry point for a screw are determined based on the salient points of the areas of interest. Successively, a maximum screw diameter and a length of the screw are determined based on the salient points. Thereafter, the screw is identified and suggested to the surgeon for usage during the implant surgery.

This invention belongs to the field of medical device technology and discloses a barbed suture and its preparation method. The barbed suture includes a suture body and barbs formed on the suture body. The preparation method involves irradiating the horizontally arranged suture body with a laser beam emitted from a laser, the temperature of which is higher than the melting temperature of the suture body. T m At the same time, it is lower than the thermal decomposition temperature of the suture body. T d The laser is positioned directly above or slightly above the suture body. The laser beam is decomposed into horizontal and vertical components. The horizontal component is parallel to the length of the suture body, and the vertical component points downwards. During irradiation, the laser reciprocates along a horizontal direction perpendicular to the length of the suture body, causing the laser beam to cut the suture body and form barbs. This invention allows the barbs to bend and curl upwards, achieving high-curvature barbs, and the resulting barbed sutures do not suffer from insufficient strength due to a reduction in suture diameter.

The invention provides a medical multi-cavity catheter and a medical catheter treatment device, and relates to the technical field of medical instruments.The medical multi-cavity catheter comprises at least two catheter cavities extending in parallel, and the far end of at least one catheter cavity forming the overall dimension of the medical multi-cavity catheter is shorter than the far end of the longest catheter cavity; the medical multi-cavity catheter is provided with a plurality of catheter cavities, so that the overall dimension of the far end of the medical multi-cavity catheter is smaller than that of the near end of the medical multi-cavity catheter, and any one of the catheter cavities is provided with a near-end working opening and a far-end working opening. The diameter of the far-end section of the medical multi-cavity catheter can be reduced, the passing ability and the compliance of the medical multi-cavity catheter can be improved, meanwhile, it can be guaranteed that all the pipe cavities in the medical multi-cavity catheter have large working inner diameters, the operation difficulty of working instruments in the pipe cavities is reduced, and the operation efficiency is improved.

Systems and methods for assisting a surgeon with implant during a surgery are disclosed. A method includes defining areas of interest in diagnostic data of a patient and defining an implant type. Post defining the areas of interest, salient points are determined for the areas of interest. Successively, an XZ angle, an XY angle, and a position entry point for an implant are determined based on the salient points of the areas of interest. In spinal procedures, a maximum screw diameter and a length of the spinal screw are successively determined based on the salient points. Based on determined length and diameter, a spinal screw and a matching screw guide is determined. Thereafter, the spinal screw and the screw guide is printed using a Three-Dimensional (3D) printer. Such printed spinal screw and screw guide could be used by the surgeon during the spinal surgery.

Systems and methods for providing assistance to a surgeon during an implant surgery are disclosed. A method includes defining areas of interest in diagnostic data of a patient and defining a screw bone type based on the surgeon's input. Post defining the areas of interest, salient points are determined for the areas of interest. Successively, an XZ angle, an XY angle, and a position entry point for a screw are determined based on the salient points of the areas of interest. Successively, a maximum screw diameter and a length of the screw are determined based on the salient points. Thereafter, the screw is identified and suggested to the surgeon for usage during the implant surgery.

The invention discloses an interventional sheath set, an interventional device and a sheathing canal, the interventional sheath set comprises an outer sheath and an inner sheath, and the outer sheath comprises an elastic sheathing canal extending in the axial direction of the outer sheath and a first passage defined by the elastic sheathing canal; a second passage extending in the axial direction of the inner sheath is arranged in the inner sheath, the outer sheath is arranged in the mode that when the inner sheath extends into the first passage, at least part of the elastic sheath tube expands and wraps the inner sheath extending into the first passage, and the second passage is communicated with the first passage; and when the inner sheath moves out of the first passage, the elastic sheath tube rebounds. The outer sheath comprises the elastic sheath tube, when the inner sheath intervenes into the first passage, the inner sheath enables the outer sheath to expand and wrap the surface of the inner sheath, the first passage is expanded, subsequent intervention of the interventional instrument is facilitated, after the interventional instrument reaches a designated position, the inner sheath is withdrawn, the elastic sheath tube rebounds and wraps the surface of the interventional instrument, and the interventional instrument is prevented from being damaged. The interventional diameter is reduced, and blood is prevented from flowing into the space between the elastic sheath tube and the interventional instrument to form thrombus.

To provide a medical connector and medical device that can reduce damage to the O-ring even when the male connector is repeatedly inserted into the female connector. [Solution] The male connector 50 has an O-ring 70 that is placed on the third inner circumference 17 of the female connector when the female connector 10 and the male connector are connected to prevent air leakage between the female connector and the male connector, a tapered portion 64 provided on the base end side of the O-ring that slides the latch 30 radially outward and expands in diameter toward the base end side, and a fourth groove portion 66 provided on the base end side of the tapered portion that fixes the latch when the female connector and the male connector are connected.

An interventional system is used to treat a lesion in a target anatomy. The interventional system includes a balloon catheter and a guidewire. The balloon catheter includes a balloon coupled to a catheter shaft. The catheter shaft includes a guidewire lumen having a lumen diameter. The guidewire includes a coil tip coupled to a guidewire shaft at a proximal joint. A coil diameter of the coil tip at the proximal joint is larger than the lumen diameter of the catheter shaft. The interventional system can be used to access and treat the lesion in the target anatomy. Other embodiments are also described and claimed.

The utility model belongs to the field of medical instruments, and provides a cannula puncture outfit which comprises a handle and a platy outfit body fixedly connected with the handle, the tail end of the outfit body is an arc-shaped head, a cannula hole is formed in the tail end of the outfit body, a cannula is detachably fixed in the cannula hole, and the cannula is connected with the handle. The length of the long axis of the sleeve hole in the extending direction of the transformer body is larger than the diameter of a sleeve body of the sleeve but smaller than the diameter of an inner flange plate of the sleeve in an undeformed state, and the length of the short axis of the sleeve hole is slightly smaller than the diameter of the sleeve body of the sleeve. According to the cannula puncture outfit with the structure, the cannula can be conveniently placed in a surgical site, after the cannula is placed in the surgical site, the cannula and the puncture outfit can be separated through simple rotation, and surgical operation is greatly simplified.

A tissue luminal stent is provided comprising a body having an elongated tubular configuration and a deployed configuration.SOLUTION: A tissue lumen stent includes a body having an elongated tubular configuration and a deployed configuration. When deployed, each of the first end and the opposite second end of the body expands into the first and second flange structures, leaving a generally cylindrical saddle region therebetween. At least one of the first and second flange structures has at least first and second inflection points defining first and second segments of the flange structure, wherein an angle of the first inflection point defined by the first segment and the cylindrical saddle region is at least as large as an angle of the second inflection point defined by the first segment and the second segment. The first segment includes a portion of increasing diameter and the second segment includes a portion of decreasing diameter.SELECTED DRAWING: Figure 10B

An isolator comprises an inner core including a bore extending therethrough, an outer shell including a cylindrical wall and an elastomer positioned radially between the inner core and the outer shell. The elastomer includes a first leg and a diametrically opposed second leg as well as a third leg in a diametrically opposed fourth leg. The first leg and the second leg interconnect the inner core and the outer shell and originate at the inner core and diverge radially outwardly along a first longitudinal direction. The third leg and the fourth leg each interconnect the inner core and the outer shell and originate at the

A surgical cutting device (10) for cutting and removing cartilage from an affected area is disclosed. The surgical cutting device includes an elongated shaft (12) having a proximal portion (18) and a distal portion (20) connected between a proximal end (14) and a distal end (16). A central longitudinal axis extends through the elongated shaft. The proximal portion has a first diameter and the distal portion has a second diameter, the first diameter being greater than the second diameter. The cutting device further includes a cutting tip (22) at the distal end of the elongated shaft. The cutting tip extends at an angle relative to the central longitudinal axis along a second axis and includes a curved blade (24). The curved blade includes an inner wall (26) that extends to a base (28) of the cutting tip.

The present application relates to the field of model construction, in particular to a kind of construction method of vertebral artery compression rat model, the inner diameter and blood flow velocity of normal rat vertebral artery are obtained by ultrasonic detection;Anesthetize rat, skin preparation, disinfection, incision, expose vertebral artery;According to the required compression degree, select the tissue clip of corresponding specification, fix on vertebral artery, keep vertebral artery in compression state;Suture incision, disinfection, bandage;After rat awakens, daily care, feed, until incision healing;Ultrasonic detection is carried out, the inner diameter and blood flow velocity of the vertebral artery of rat model are obtained, compared with the inner diameter and blood flow velocity of the vertebral artery of the same age healthy rat or rat before modeling, whether it meets the standard of successful modeling is judged.

A dual mobility prosthetic bearing comprises: an outer femoral head component (9020) having a part-spherical outer bearing surface (9022) and a head recess (9024) comprising a proximal portion (9026) defined by a part-spherical inner bearing surface and a distal portion (9028) defined by a generally tubular inner bearing surface, the proximal portion having a maximum diameter that is greater than a maximum diameter of the distal portion; an inner femoral head component (9030) having a neck recess (9032) for receipt of a femoral neck component (9004), and a part-spherical outer bearing surface (9034) configured to be received within the proximal portion of the head recess; wherein the part-spherical outer bearing surface of the outer femoral head component and the part-spherical outer bearing surface of the inner femoral head component have a coincident centre of rotation; and wherein the inner femoral head component comprises a generally tubular skirt (9036) configured for receipt within the distal portion of the head recess.

The application belongs to the field of medical devices, and particularly relates to a humeral shaft middle-distal fracture anterolateral MIPPO bone plate, which comprises a bone plate main body, a plurality of screw holes one are uniformly arranged on the proximal end to the middle end and the distal end of the bone plate main body, a plurality of screw holes two are arranged on the distal end of the bone plate main body, the diameter of the screw hole one is greater than the diameter of the screw hole two, the screw holes of the proximal end and the distal end of the bone plate are respectively provided with screw holes matched with screws of different diameters, the structure of the bone plate is designed on the basis of CT scanning data of humeral bones of a plurality of patients, and the bone plate is designed according to the structure of the reconstructed three-dimensional model of the humeral bone, so that the bone plate is more in line with the anatomical characteristics of the patient, and the bone plate is more suitable for anterolateral MIPPO surgery in cooperation with a matching device, indirect reduction of a fracture can be realized, the operation is further simplified, the operation time is saved, the amount of bleeding is reduced, and the surgical trauma is reduced.

The present disclosure provides a medical catheter, a surgical instrument, and a medical catheter manufacturing method, which relates to the technical field of medical device. The medical catheter provided by the present disclosure adopts a structure in which a support tube is installed inside an outer tube body and the support tube extends along the inner wall of the outer tube body. This structure not only allows the medical catheter to bend and easily pass through curved channels, but also maintains good structural strength and support when the outer tube body has a small diameter and thin wall. It is particularly suitable for surgical instruments that need to be inserted through narrow channels.

A vascular occlusion catheter is configured for insertion, and at least partial inflation, into a targel blood vessel. The vascular occlusion catheter includes a proximal catheter shaft, a distal catheter shaft, and a semi-compliant or non-compliant occlusion balloon mounted at a proximal side thereof to the proximal catheter shaft and mounted at a distal side thereof to the distal catheter shaft. A central catheter shaft extends through the proximal catheter shaft, the occlusion balloon and into the distal catheter shaft. The central catheter shaft is constructed as the primary load-bearing chassis of the vascular occlusion catheter. The occlusion balloon defines a blown diameter between approximately twenty-five and approximately thirty-five millimeters and the occlusion balloon defines a double-wall thickness of between approximately 0.0003″ and approximately 0.0020″.

The utility model discloses an instrument for preventing gas, digestive juice and tumor from entering the abdominal cavity during endoscopic full-thickness surgery, which comprises a pipe sleeve, a ring enclosed by inner-layer metal wires and a ring enclosed by outer-layer metal wires are arranged at the front end of the pipe sleeve, the diameter of the ring enclosed by the inner-layer metal wires is smaller than that of the ring enclosed by the outer-layer metal wires, and the diameter of the ring enclosed by the inner-layer metal wires is smaller than that of the ring enclosed by the outer-layer metal wires. A ring defined by the inner-layer metal wires and a ring defined by the outer-layer metal wires are connected through a transparent film layer, the rear end of the pipe sleeve is connected with a handle, and the ring defined by the outer-layer metal wires is covered with an outer-layer film. The utility model not only can be embedded into the perforated part, but also can prevent gas, liquid and tumor in the tube cavity from entering the abdominal cavity.

The felting needle of the invention has a shank attached to a rear end of the needle in its longitudinal direction. The felting needle has a working section attached to a front end. The shank has a clamping section and a guide section. The guide section is positioned further forward in the longitudinal direction than the clamping section. The diameter of the guide section, measured perpendicular to the longitudinal direction, is smaller than the diameter of the clamping section, also measured perpendicular to the longitudinal direction. The felting needle of the invention is characterized in that the diameter of the guide section is at most 12%, preferably at most 9%, and even better at most 6% smaller than the clamping diameter. This allows the felting needle to be inserted more easily into the needle board and protects the board during insertion.

The utility model discloses a kind of hysteroscope liquid leakage prevention structures, including center cylinder base, the both ends of center cylinder base are fixedly connected with end fixed ring, the outer end array of two sides the end fixed ring is fixedly connected with multiple elastic supporting pieces, and the outer end of multiple elastic supporting pieces of same side is equipped with silica gel outer cover, two sides The outer side of elastic supporting piece is fixedly connected with operating slip ring and insertion stop seat respectively, and the outer end of two sides silica gel outer cover is fixedly connected with the outer edge of corresponding side operating slip ring and insertion stop seat.In insertion, small in diameter, it is convenient to set, and will not cause damage to cervix, can effectively solve the problem of clinical surgeon encountered in hysteroscopy surgery in uterine cavity liquid leakage, reduce operation time and surgical complications, improve operation efficiency and safety.

A tubular prosthetic device for implantation into a body lumen includes a first part including a tubular lumen and a second part including an attachment member. The second part is secured to the first part via various configurations, where the device is capable of being reduced to a diameter less than the diameter of traditional devices, for ease of use during implantation.Methods of using the device are also provided.

A liquid-sealed mount (10) includes a body (12) having one end closed by a body rubber (14) and the other end closed by a diaphragm (16), a membrane (34) which partitions an inside of the body (12) into a first liquid chamber (22f) and a second liquid chamber (22s), a plurality of crosspieces (44) placed on both sides in an axial direction of the membrane (34) with the membrane (34) therebetween, and extending radially with a predetermined point as a center, and a passage (33) which communicates the first liquid chamber (22f) and the second liquid chamber (22s). The membrane (34) has at least one protrusion group (52) formed from a plurality of protrusions placed on a circle which is approximately concentric with the predetermined point, and the at least one protrusion group (52) satisfies the condition y > 2x + 2a when an average value of spacing between protrusions (50) adjacent in a circumferential direction is x, a diameter of the protrusion (50) is a, and a width of the crosspiece (44) is y.