Orthopedic hinge

 

(57) Abstract:

The invention relates to protestosterone and can be used in protestosterone prosthetics for people with disabilities. Orthopedic hinge consists of the upper element and connected to it can be rotated through the hinge screws bottom element, and razmetelovo manually retainer, retainer which is located in the upper part, which can move. The top element is divided in a plane perpendicular to the hinge screws on the base and the lid that covers it, at least partially. The catch is that they can move in respective to each other photobrush the cuts made in facing each other, the inner sides of the base and lid. The technical result consists in increasing the functionality of the hinge by removing the dirt in the area of movement of the latch. 2 C.p. f-crystals, 11 ill.

The invention relates to a prosthetic joint, particularly the knee joint for the foot part. Known orthopedic hinge movement, consisting of an upper element and connected to it with the possibility of rotation of the lower element, and razmykaetsya, when in its closing position, is in a lock groove made in the lower element, can move from this closing position in normally closed position against spring force. Such a hinge is described in U.S. patent 2591373.

In a known embodiment of the guiding device, providing the ability to move the clamp, made in one-piece upper element open. The impact on the latch through the hinge attached to the top member and covering it with both sides of the tilting lever, the free end of which acts driven manually pulling the body. Upon swinging the lever upward, the latch mounted between both shoulders swinging arm, removed from its closing position up.

The basis of the invention is to improve the functionality described above orthopedic hinge.

According to the invention this problem is solved due to the fact that the pivotal connection of the upper and lower hinge elements is made by means of a hinged screw top element is divided in a plane perpendicular to the hinge screws on the base in matching photobrush the cut made in facing each other, the inner sides of the base and lid, and in its closing position is in a lock groove approximately radial relative to the hinge screw direction.

Thus, the invention provides a hidden placement of the retainer. This prevents the contamination in the area of movement of the latch and thereby improves the functionality of the hinge. Cutouts surrounding the latch on both sides, form the guide is very accurate geometry, and therefore provide reliable moving latch without bias. The design of the hinge with a hidden placement of the clamp, in which the spring is also closed, making the design more aesthetic appearance, which is of great importance for orthopaedic devices that have to wear very often.

It is particularly convenient manipulation of the locking device is ensured by the fact that the latch is associated with the ability to influence it in the direction of its movement is driven manually traction element, preferably personaly cord (12).

Especially strong, largely protected from contamination, swivel can the STU rotation scheme of the sandwich between the base and the top of his element made in the form of a disk section, through which passes the pivot screw and which contains at least one locking groove.

Other advantages of the invention can be seen from the drawings and description of an exemplary embodiment of the invention.

In the drawings shows a variant of the invention, serves as an example of his design. The drawings include the following figures:

Fig.1 is a view of the orthopedic hinge side outside;

Fig.2 is a end view of the hinge shown in Fig.1;

Fig. 3 - view of the hinge shown in Fig.1, in axonometric projection;

Fig.4 - view of the hinge shown in Fig.3, from the back side;

Fig.5 is an enlarged image of the hinge shown in Fig.1, with a locking device, the selected hatching;

Fig.6 is a view of the inner side of the base of the upper element;

Fig.7 is a end view of the base shown in Fig.6;

Fig.8 is a view of the base shown in Fig.6, from the opposite side;

Fig.9 is a view of the inner side of the cover that covers the base, shown in Fig.6-8;

Fig.10 is a end view of the cover shown in Fig.9;

Fig.11 is a view of the cover shown in Fig.9, on the reverse side.

In Fig. 1-5 presents an orthopedic hinge, made in the knee as the NTA 2, are pivotally connected to each other through the hinge screws 3.

The top element 1 is divided in the plane perpendicular to the hinge screw 3, a base 4 and partially covering the cover 5. When the hinge is assembled between the base 4 and cover 5 according to the scheme of the sandwich can be rotated is made in the form of a disk section 6 of the lower hinge element 2, through which passes the pivot screw 3.

On the inner side of the base 4 and on the inner side of the cover 5 is made razoobrazny cuts 7, 8, which in the assembled state of the host with the ability to move the latch 9. When the valve 9 is in its closing position, it is approximately radial relative to the hinge screw direction in the locking groove 10, is made on the outer edge of section 6 of the lower element 2, can move from this closing position in normally closed position against the action of spring 11. This opening operation is carried out manually, in particular, the tension perlongo cord 12, which is connected directly with the retainer 9, acting in the direction of its movement, i.e. in the direction of the longitudinal notches 7, 8.

2. Orthopedic hinge on p. 1, characterized in that directly with the retainer (9), with the ability to influence it in the direction of its movement, associated driven manually traction element, preferably Nowlen can be rotated according to the scheme of the sandwich between the base (4) and a lid (5) of the upper element (1) made in the form of a disk section (6), which passes through a hinge screw (3) and which contains at least one locking groove (10).

 

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FIELD: medical engineering.

SUBSTANCE: device has femur part and crural part connected to each other with rotation mechanism. Braking mechanism, mounted in the knee joint on its axle, has compression unit and unit for controlling the compression force composed of an elastic member and adjusting screw. Threaded hole for receiving the screw is available in one of the parts. The braking mechanism has lubrication unit enveloping the compression unit and is engageable with the axle.

EFFECT: wide range of exoprostheses rehabilitation applications; simplified design; high design reliability.

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FIELD: medical engineering.

SUBSTANCE: device has femur part and crural part connected to each other with restricted rotation mechanism having at least one axle and bearings, braking mechanism having overrunning clutch mounted on axle and enveloped with bushing having slit and screw for controlling overrunning clutch pressure on the part of the bushing. The knee joint additionally has an overrunning clutch identical with the above mentioned, bushing with slit, screw for controlling overrunning clutch pressure on the part of the bushing and lubrication unit as well. Both clutches are back-to-back mounted on axle along permissible direction and the bushings have length being less than clutches length. Each screw for controlling overrunning clutch pressure on the part of the bushing is mounted in a notch on its external surface in perpendicular to bushing axis and intersects slit, and the threaded openings for receiving the screws are produced in body of one of knee joint part. Elastic member is arranged between screw head and bushing. The member surrounds the screw and the lubrication unit envelopes the bushings and is engageable with external surfaces of the overrunning clutches.

EFFECT: improved comfort conditions; reduced patient power consumption when walking.

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FIELD: medical engineering.

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EFFECT: improved rotation conditions with any type of supporting members without taking off the prosthesis bucket.

6 cl, 4 dwg

FIELD: medical engineering.

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EFFECT: enhanced effectiveness in locking a joint without backlash regardless of friction wear of its surfaces.

5 cl, 5 dwg

FIELD: medical engineering.

SUBSTANCE: device has magnet and magnetic rheological liquid changing knee joint cushioning moment on from transparent flexible material fillable in operation course with transparent ferromagnetic liquid. It has a set of rotors manufactured rotatable about longitudinal knee joint prosthesis axis, a set of stators spread alternatingly with said rotors for forming spaces between them. Magnetic rheological liquid is in spaces between said rotors and stators and the changeable knee joint cushioning moment is carried out as a result of magnetic rheological liquid shift caused by relative rotation between said rotors and stators during knee joint rotation between said rotors and stators during knee joint rotation. Prosthesis unit has knee joint prosthesis, recess for stump having mechanical link with the knee joint prosthesis. The recess is adopted for receiving retained extremity of human being having one leg failing, crural prosthesis part, shin part being in mechanical link with knee joint prosthesis. Prosthesis foot is in mechanical link with crural prosthesis part. The knee joint prosthesis is knee joint prosthesis described above. Method for controlling electronic knee joint prosthesis rotation having a set of alternatingly spread magnetically soft rotors, magnetically soft stators and magnetic rheological liquid in a set of spaces between said rotors and stators including application magnetic field passing over rotors, stators and magnetic rheological liquid and adjusting magnetic field for varying magnetic rheological liquid viscosity to achieve variable rotation resistance to twisting for controlling knee joint prosthesis flexure and extension.

EFFECT: prolonged service life; operation reliability.

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FIELD: medical engineering.

SUBSTANCE: method involves measuring instantaneous axial force and moment magnitude, and knee angle value of prosthesis knee. Automatic shock absorption adjustment is carried out on basis of instantaneous data read from transducers and relations binding transducer data and shock absorption in standing phase determined in clinical studies on people having one leg lost and various body dimensions saved in computer memory. Prosthesis foot and ground contact time is continuously measured for each period observed during one walking cycle when carrying out adaptive prosthesis knee shock absorption control. The contact time is saved in computer memory in temporary windows conforming to patient locomotor speed. Iterative shock absorption modulation is carried out in walking phase for straightening knee with patient movement speed. Shock absorption values are used for automatically controlling shock absorption in walking phase at all locomotor speed magnitudes. The prosthesis knee has knee drive, transducers for measuring force and moment applied to the prosthesis knee, controller having memory and capable of sending command signals to the knee drive and receiving input signals from transducers. The knee drive is designed as magnetic rheological brake operating in shift mode. The prosthesis unit has prosthesis knee, recess for receiving stump, prosthesis shin part and prosthesis foot subjected to mechanical binding.

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EFFECT: invention provides simplification of appropriate unblocking.

FIELD: medicine; orthopaedics.

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