CS244960B1 - The purpose of the solution is to eliminate the use of temporary insulation, permanent insulation of the vault already in the cold state of the furnace and to achieve a high degree of fault-free operation of the insulated vaults. This purpose is achieved by insulating the vault, which comprises at least one sealing layer of similar heat-resistant materials and mortar as the vault, one or more of the coating layers and the sealing layer of the refractory mortar. The insulation is purged before tempering with at least one dilatation joint and is adjusted to one-segment by sealing all the expansion joints until the stationary heat flow in the insulation liner is reached. The method of generating insulation of industrial furnace vaults and industrial furnace insulation is useful in all types, both with discontinuous and continuous production. - Google Patents

Abstract

The solution concerns a cohesive knee joint prosthesis for the replacement of permanently damaged knee joints of the human body. Its essence is that the cohesive prosthesis consists of a femoral and tibial head ending with a terminal, which are movably connected to each other by a shaped ligature coupling. The movement of the heads in relation to each other is solved using special eccentric paths, shaped on both lilavices in such a way that the trajectory of the resulting movement is circular, while all the physiologically necessary parts of the movement are consistently observed in full and connected to each other. The cohesive prosthesis allows a lateral swing of ± 5° to the sides from the femur-tibia axis, which is necessary for the stability of the leg as a whole. The maximum flexion of the prosthesis is 160° from the straightened leg.

Description

24496 O

The present invention is characterized by a cohesive knee joint prosthesis that overcomes the irreversible damage of the knee joints of a human organism. Current knee joint prostheses, such as INTERPLANTA, Germany, use Izv. formed types of prostheses, based on the principle of the least possible loss of flood live material. Therefore, for example, the TILL-MAN system only replaces cartilage, from the material: Geomedic vitallium, into the head bone - the femur and the whistle - the tibia, which, according to the aforementioned principle, is embedded in a less valuable process. (rheumatic inflammation), partially altered bone tissue of the bones. In this way, the introduction of the bone substrate is often and relatively early, with prosthesis tips breaking from the bones, lack of simulation of physiological movement, causing cage pain and muscle pain.

These drawbacks are remedied by the coherent argument of the knee joint for the replacement of the sustained knee joints of the human organism according to the invention, which consists of a femur head having a femoral excited truncated end at the bottom. with a front end stop and no backing at the rear, and having at its upper end a flange end, wherein the femur head is comprised of the femur body and the femur cover, which, by joining the connecting elements, forms within the femoral head cavity in which it is movably inserted the cylindrical portion of the coupling coupler, further comprising a neck of the rectangular section terminated by a spherical portion which is movably inserted in the spherical cavity formed by joining the connecting elements of the tibia body and the tibia cap inside the tibium head which has at the top parts of the tibio eccentric orbit terminating in the front with a front tibia terminal and a neck of the binding coupling inserted in a groove formed in the tibia body of the tibia head and projecting into the tibial eccentric path.

1 is a side view of a cohesive prosthesis, FIG. 2 is a front view of a cohesive prosthesis, and FIG. 3 is a side view of the binding coupler.

Fig. 1 is a femur head 1 terminated with a femur end 21 connected by a coupling 3 to a tibia head 2 terminated by a tibial end 22. Further, a femur eccentric path 7 is provided at the bottom of the femoral head. preloaded by a front stop 8, terminated at the rear with no stop 9, on which the tibial eccentric path 6, preceded by the front projection 4, is placed at the rear, with no protrusion 5 positioned at the top of the tibia head 2. On Wednesday the tibi eccentric path 6 of the groove 10, through which the neck of the 19-link clutch 3, terminated on the upper part by the cylindrical portion 18, movably inserted inside the femoral head 1, the neck end 19 is terminated by a guf 20, movably inserted inside the tibial head 2.

Figure 2 shows a knee joint prosthesis viewed from the front. The femur head 1, terminated with the femur end piece 21, consists of a femur body 12 which, by connecting the connecting elements 11, in FIG. 1, with a spherical cap 13, forms a cylindrical cavity 16 inside the feeder head 1, in which FIG. 2 is a tibia head 2 with a front projection 4, with a tibial eccentric path 6 and a femur eccentric path 7 terminated with a tibial end piece 22; 1 from the tibia body 14 connected by the connecting elements 11, in FIG. 1, to the tibia cover 15, thereby forming a ball cavity 17 inside the tibia head, to which a groove 10 formed in the tibia The body portion 14 in which the inserted neck 19 of the binding coupler 3 is moved. The spherical portion 20 of the binding coupler 3, FIG. 1, is movably inserted in the vault cavity 17 of the tibia head 2.

FIG. 3 is a side view of a binding coupling 3, consisting of a cylindrical portion 18, of a neck 19, with a rectangular cross-section and of a spherical portion 20. The cohesive knee joint prosthesis is derived from the anatomical structure of a human joint and to its fullest extent, it allows all physically necessary kinds of self-moving movements to be performed. In the gradual bending, the flexion of the leg is: the loosening of the femur by twisting a 5 ° femur-tibia, followed by the slip of the femur head 1 along the tibia head 2, which passes into the rotation of the femoral head 1 to the tibio-tibia. 2. The prosthesis permits, especially in the first phase of flexion, a lateral oscillation of ± 5 ° from the axis: the femur - tibia, which is necessary to maintain the stability of the foot as a whole.

In all phases of flexion, the entire prosthesis is based on the binding joint 3, and therefore, the action of the prosthesis is not transmitted directly to the joint sleeve and the respective muscles, thereby securing the prosthesis against breaking out of the remnants of the femur and the tibia.

By combining all the movement phases, the resulting flexion is within a range of up to 160 °, with a vertical drop of: -1 mm, and a horizontal shift of: -10 mm, which is a physiological analog of the partial movements in the 1’ human knee joint. The shape of the femurcentric path 7 and the tibial eccentric path 6 is chosen such that the trajectory of the resulting motion is circular with a maximum

Claims (2)

SUBJECT Cohesive knee joint prosthesis for the replacement of permanently damaged knee joints of a human body, characterized in that it consists of a femur head (1) having a femur eccentric pathway (7) at the bottom, terminated at the front by a front stop (8) and at the back and having a femur end (21) at the top, the femur head (1) being comprised of a femur body (12) and a femur cap (13) which, by connecting the fasteners (11), form inside the femur a head (11) of a cylindrical cavity (16) in which a cylindrical portion (18) of the coupling coupling (3) is movably inserted, which BACKGROUND OF THE INVENTION further comprising a rectangular cross-sectional neck (19) terminated by a spherical portion (20) that is movably mounted within a spherical cavity (17) formed by joining connecting elements (11i of the tibia body (13) and tibia cap (15) inside the tibia head. (2) having a front projection (4) at the top and no projection (5) at the rear, and having a tibial end (22) at the bottom and a neck (19) of the coupling (3) inserted in the groove ( 10), formed in the tibia body (14) of the tibia head (2), opening into the tibia eccentric path (6).