507 results about "Saddle shape" patented technology

A ring prosthesis provides suitable flexibilities/stiffness three-dimensionally at various points about the circumference of an associated heart valve, and is shaped proportionally to fit about the annulus of the associated heart valve. The ring prosthesis also provides a certain flexibility to conform to the natural non-planar shape of the annulus (e.g., saddle shape for mitral valve surface) with or without preformation of the ring prosthesis. The prosthesis can also be used as an artificial annulus for further valve anchoring.

A prosthesis for a heart valve (e.g., the mitral valve) is generally C-shaped in plan view. Points at the top and bottom of the C lie in a plan view plane. The back of the C rises above the plan view plane between the top and bottom points. Free end portions of the C may also rise above the plan view plane. The prosthesis is accordingly saddle-shaped. The back of the C may have an indentation that extends toward the open side of the C. In use as a mitral valve prosthesis the top and bottom of the C are respectively adjacent the commissures of the valve, and the back of the C is adjacent the posterior section of the valve. The prosthesis may be rigid or semi-rigid.

The ankle joint prosthesis adapted to involve the patient's distal tibia and talus has, according to the present invention, tibial, talar and mobile or semi-constrained bearing components that are laterally to medially implanted in the patient. The tibial component's top surface has convex curvature in its anterior to posterior plane and is configured so as to approximate and match with the curvature of a prepared portion of the distal tibia; its bottom surface being approximately flat. The talar component's top surface has saddle-shaped, convex curvature in its anterior to posterior plane, it's bottom surface has concave curvature and is configured so as to approximate and match with the curvature of a prepared portion of the talus. The mobile or semi-constrained bearing components have embodiments that comprise a wide variety of geometric shapes. A method for implanting such a prosthesis is also disclosed.

Machine tool simplifying maintenance, reducing manufacturing costs, and enabling high precision machining. The machine tool is equipped with: a bed furnished with a rectangular base, right and left sidewalls provided standing either side of the base, and a rear sidewall provided standing along the back of the base; a table disposed in the space surrounded by the three sidewalls; a first saddle shaped in the form of a rectangular frame shape, provided free to shift back and forth supported on the tops of the left and right sidewalls; a second saddle penetrated by a perpendicular through-hole and arranged free to shift sideways inside the first saddle frame; and a spindle head arranged free to shift perpendicularly inside the through-hole in the second saddle; and a main spindle arranged over the table and supported by the spindle head free to rotate centered on its axis.

The invention concerns an osteosynthesis system, comprising at least a linking element in the form of a rod, at least two fixing elements each capable of being anchored in a vertebra, and a locking screw. The invention is characterized in that the base of the head has a general horse-saddle shape, and the head has guide means for an independent closure component designed to be fixed on the head after the linking element has been positioned in the fork of the head, said closure component being generally U-shaped whereof the branches are urged to co-operate with the branches of-the fork-shaped part of the head and whereof the base comprises an internal thread for co-operating with the locking screw and the guide means provided on the head is formed by an arc-shaped shoulder on the outer side surfaces of the fork-shaped part. The invention also concerns an ancillary and an element for fixing such a system.

A nasal mask assembly that includes a seal member defined from a unitary piece of elastomeric material. The seal member defines a nose receiving cavity and has a first end portion and a second end portion generally opposite the first end portion. A first opening in the first end portion allows at least a portion of a nose to enter the nose receiving cavity such that the nares of the patient communicate with the nose receiving cavity. The seal member includes a neck portion defined in the second end portion and a second opening defined in the neck portion in communication with the nose receiving cavity. A reinforcement area is provided on the side walls of the seal member. The reinforcement area comprises a saddle shaped contoured area on each side of the seal member. Each saddle shaped area has an upper and a lower protrusion portion for providing supporting contact with the face.

The present invention relates to prostheses for treating spinal pathologies, and more specifically to an artificial disc implant. The implant includes an inferior implant for placement on an inferior vertebra and a superior implant for placement on a superior vertebra. The implant also includes an articulating interface that is generally saddle-shaped and ramped from the anterior of the vertebrae to the posterior of the vertebrae.

Devices, implements and methods are provided for performing trapezioplasty of the osteoarthritic trapezium. Once a palmar osteophyte has been removed from the trapezium bone, a trapezial rasp is used to shape the central portion of the trapezium bone into an initial saddle shape. A contouring tool having a double curvature reverse saddle shape is used to contour the trapezium bone into a final, smooth saddle shape.

A mitral valve annuloplasty prosthesis (ring or C) has a generally saddle shape, i.e., portions of the prosthesis that are or will be adjacent the anterior and posterior commissures of the valve are relatively low as compared to at least some other portions of the prosthesis that are or will be between the commissures. However, the saddle shape is asymmetrical, in that the portion that is or will be adjacent the posterior commissure is lower than the portion that is or will be adjacent the anterior commissure.

The invention discloses a semi-sliding hydraulic bulging technology of an automobile axle housing part and a die thereof. In the invention, the semi-sliding bulging die the body of which is composed of an upper fixed module and a lower fixed module (10,10') in the middle and a left sliding module and a right sliding module (6,6') is adopted to carry out twice hydraulic bulging shaping to a reduced pipe blank (11), wherein, after hydraulic bulging shaping at the first time, the middle of the pipe blank is saddle-shaped; and after being annealed, precise shaping is achieved by secondary hydraulic bulging shaping. The upper fixed module and the lower fixed module keep motionless in the process of bulging and are used for removing the parts after bulging. The left sliding module and the rightsliding module (6,6') adopt an integral structure (or are composed of parts of axial split dies) and are respectively connected with the left sliding module and the right sliding module of a three-dimensional hydraulic machine to perform horizontal movement. The cavity of the fixed module by secondary hydraulic bulging comprises the maximum cross section of a workpiece, and the cavity of the fixed module by first hydraulic bulging is designed according to the saddle-shaped bulging pipe blank. The technology replaces a casting method and a stamping welding method, simplifies manufacturing procedures, lowers cost by 20% and improves strength and rigidity of the workpiece by 30%.

Interspinous/inter-laminar spinal spacers (spinal spacers) are configured to be placed between bony structures (i.e. transverse and spinous processes) of adjacent vertebrae of a spine. In one form, flexible spinal spacers are defined by a unitary body that is configured to be placed between bony structures of adjacent vertebrae of a spine. The unitary body has a flex portion that provides for motion between the adjacent vertebrae to which it is coupled. The flex portion is configurable to provide for various degrees of angulation, flexion, extension and/or compression of the present flexible spinal spacer. In another form, static spinal spacers are defined by a unitary body that is configured to be placed between bony structures of adjacent vertebrae of a spine. The unitary body has saddle-shaped ends each defining a pocket that is configured to receive a bony structure of a vertebra. The pockets may or may not be textured and/or may or may not include teeth, serrations or ridged surfaces to secure the spinal spacer to the bony structure.

The invention provides an extra-large-span saddle-shaped flexible network cable tensioning forming construction method. A step-by-step lifting overall tensioning method is provided to carry out construction, blanking is carried out on hanging cables and annular cables according to the set length, the hanging cables and the annular cables are assembled on the ground, the hanging cables are selected as tensioning cables, the hanging cables are hoisted in batches in a subsection mode, finally the hanging cables are tensioned and mounted in place, and the whole network cable structure is tensioned and formed. The method solves the problem that construction difficulty is large due to annular cable tensioning, and saves the number of construction personnel and mechanical consumption, due to the fact that the dynamic and continuous construction process is divided into construction periods and each hoisting period is statically controllable, construction quality detection is facilitated better, the whole set of brand-new extra-large-span saddle-shaped flexible network structure construction technology is formed, the construction method is small in high-attitude work quantity, the high-attitude work quantity is reduced by more than 60 percent relative to a traditional tensioning hoisting process, a supporting tower and other auxiliary facilities are removed, the construction period is shortened by 50 percent, and the method can be widely applied to flexible network structure construction.

Spacerless artificial disc replacements (ADR) are disclosed. One preferred embodiment includes two saddle-shaped components to facilitate more normal spinal flexion, extension, and lateral bending while limit axial rotation, thereby protecting the facet joints and the annulus fibrosus (AF). Either or both of the superior and inferior components are made of a hard material such as chrome cobalt, titanium, or a ceramic including alumina, zirconia, or calcium phosphate. The articulating surfaces of the ADR are also preferably highly polished to reduce friction between the components. Metals, alloys or other materials with shape-memory characteristics may also prove beneficial.

An annuloplasty ring comprising an elongated curved member defining a ring-shape having an at rest size and shape to fit against the annulus of the mitral valve in a heart, the member having a substantial saddle shape wherein the annular height to width ratio is in the range of 5% to 50%.

A mitral annuloplasty ring that has a saddle shape with an upward bow in both an anterior segment and a posterior portion, with the upward bow being more pronounced in the anterior segment. The ring defines a closed ring body with a rounded isosceles triangular shape and the anterior segment along a long side. The posterior portion bulges outward to create a minor-major axis dimension ratio of between about 3.3:4 to 4:4. An inner ring body is made of a generally rigid material such as titanium that will substantially resist distortion when subjected to the stress imparted thereon after implantation in the mitral valve annulus of an operating human heart. The outward and upward posterior bow of the annuloplasty ring corrects for pathologies associated with mitral valve prolapse, as seen with Barlow's syndrome for instance, in which the leaflets tend to be elongated or floppy. The anterior segment has an enhanced upward bow to conform to systolic mitral annulus shapes, and the upward posterior bow is somewhat lower, for example between 1-2 mm lower, to help reduce the chance of suture pull-out, or dehiscence.

The invention provides a numerical control submerged automatic arc welding device and a numerical control submerged automatic arc welding method for a saddle-shaped narrow bevel and belongs to the technical field of non-planar automatic welding. The invention mainly solves the technical problems of low production efficiency and non-assured welding quality of the welding of heavy pressure vessel in the prior art. The automatic welding device and the automatic welding method of the invention mainly comprise that: a rotating motor (3) rotates to drive a welding gun (2) to perform a rotary motion a; meanwhile, a machine head lifting motor (4) makes a welding gun (2) perform a lifting motion b; the two kinds of motions a and b form a resultant motion through a certain numerical control model; and through the numerical control resultant motion, a welding gun head (2-1) can accurately realize the saddle-shaped path welding of a narrow bevel. Meanwhile, the numerical control of the welding times and welding amount of each layer, the number of the welded layers and the thickness of the welding channels in the narrow bevel can be realized. The device and the method are mainly used in the saddle-shaped welding of the narrow bevel between a connecting pipe and a cylinder in the heavy pressure vessel.

The invention relates to a light distribution lens for an LED street lamp. An LED comprises an LED chip, a packaged lens packaged together with the LED chip and an optical axis; and the lens comprises a continuous saddle-shaped light distribution curved surface, a concave semi-sphere and a connecting plane, wherein the light distribution curved surface is symmetrical about the optical axis and used for distributing Lambertian distribution light emitted from the corresponding LED chip into large-angle bat-wing light intensity distribution along the length direction of a road; the concave semi-sphere is positioned at the bottom of the lens and symmetrical about the optical axis and the shape of the concave semi-sphere is matched with that of the corresponding LED packaged lens; and the connecting plane is positioned at the bottom of the lens and used for connecting the light distribution curved surface and the semi-sphere. The lens can distribute Lambertian distribution light emitted from the corresponding LED chip into large-angle bat-wing light intensity distribution along the length direction of the road to form oblong light spots along the length direction of the road. Therefore, the utilization ratio of light rays is enhanced, the intensity of illumination on a road surface between street lamps is enhanced and road surface illumination becomes uniform.

The invention discloses a saddle-shaped window type air-conditioner, which comprises an indoor panel, a machine case, an evaporator, an indoor fan, a condenser, an outdoor fan, a compressor and a chassis. The machine case includes three parts: an indoor machine shell, an outdoor machine shell and a connecting machine shell, and a mounting bracket is arranged on a saddle-shaped part which is a combining part of the outdoor machine shell, the indoor machine shell and the connecting machine shell and comprises a first mounting part, a second mounting part and a sliding part, wherein the first mounting part and the second mounting part are respectively jointed with buckling outlines of the bottoms of the indoor machine shell and the outdoor machine shell and are fixed with shell bodies, the sliding part is jointed with a bending outline connecting of the bottoms of the machine shells, the indoor machine shell and the vertical side face of the outdoor machine shell, and the height of the mounting bracket and the width of the saddle-shaped position are realized by changing the connecting positions between a regulating part and the first mounting part, the second mounting part as well as a spanning part. Gravity acted on the air-conditioner is uniformly borne by the mounting brackets, thereby avoiding machine case fracture caused by centralized stress on the connecting machine shell.