KR20060020311A - Rotatable knee assembly - Google Patents

Abstract

The present invention provides a knee joint in which a knee block 32 and a lower knee block 34 for fixing a socket articulate through an axial link 35 and a cap link 36,

A rotary adapter 50 which fixes the socket 40 to the adapter disk 54 and has a tubular adapter tube 52 at the lower center thereof;

An adapter guide (60) that adheres the adapter pipe (52) of the rotary adapter (50) to the adapter hole (61) and is fixed to the knee joint block (32);

A stopper bar 70 is shot in the adapter guide port 60 to prevent rotation of the rotary adapter;

When pressing the tapered surface of the stopper bar 70, the stopper bar 70 is separated from the rotary adapter 50, and the push button 80 adhered to the adapter guide 60 is rotatable so that the rotary adapter 50 can be rotated. Rotating knee joint will be configured to include.

Knee, Rotating

Description

Rotating knee assembly             

1 is a view explaining a cut portion of the lower extremity;

2 is a block diagram showing a conventional thigh will,

3 is an exploded cross-sectional view of the present invention;

4 is a perspective view of a coupled state of the present invention.

** Description of symbols for the main parts of the drawing **

40; socket 50; swivel adapter 52; adapter tube 54; adapter disk 55; groove

60; adapter guide 61; adapter hole 62; stopper bar receiving groove 63; push rod coupling groove

64; set screw 70; stopper bar 71; taper groove 72; ball spring 80; pushbutton

81; tapered surface 82; length groove 83; push rod 84; head

The present invention relates to a two-stage joint of the knee joint, to be rotatable by adhering a rotatable adapter to the adapter guide coupled to the knee block of the knee joint, the rotary adapter is rotated by a sporper bar, the stopper bar is The present invention relates to a rotatable knee joint will, which is configured to engage and disengage the stopper bar by pressing a push button.

In general, the upper limb amputation when the cut portion is the upper limb, the lower limb amputation when the lower limb is called, and is called disarticulation or cutting at each joint of the upper or lower limb.

Lower limb cutting refers to a toe amputation (A) that cuts the toes as shown in FIG. 1, and a case in which the calculus is laterally cut, and such surgery is called a lisfranc disarticulation. tarsometatarsal amputation (B), Chopar's amputation (C), which refers to the cleavage of the tibial scapula and calcaneus joints, leaving only the sternum and calcaneus, and the distal and distal thirds Syme amputation (D), lower knee amputation (BK amputation; E), which refers to the lower knee joint proximal than the sever cut, knee disarticulation (F) to cut the lower leg from the knee, and the upper knee Acute amputation (above-knee amputation, AK amputation; G), surgery to remove the femur completely from the hip joint, and may include malignant tumors such as osteosarcoma or chondrosarcoma in the proximal femur. Hip disarticulation (H), pelvic ectomy (I), which cuts one side of the pelvis and the entire lower extremity (I), and the lower corpotomy (J), which removes the lower body below the lumbar spine 3-4. Etc.

In particular, the will due to the femoral cutting is basically a foot-ankle assembly 10, a shank 20, a knee assembly 30, a socket; 40), a suspension device (not shown) and the like.

The shank (20) of the thigh will connect the prosthesis with the knee joint. The lower thigh is made of wood with a lower thigh shape and plastic coated on it. The inner frame is made of metal or PVC pipe, and the surface is covered with a soft and aesthetically pleasing material. There is also a leg shape.

The knee assembly 30 is mainly used for a single axis. The uniaxial knee joint, which has a single axis, can bend around the shaft to bend and straighten the knee joint, and this joint shaft has the advantages of being simple, low in noise, and little in management.

However, such a conventional single-sided knee joint has the advantages as described above because of its simple configuration, but because the joint axis is one, the width can be bent less, and the swing of the knee joint is always constant, so that the pedestrian walks with the will. There was a structural drawback that did not adequately respond to speed.

In the meantime, the knee joint double will is one of the wills used by those who have cut below the knee. The two-stage knee will be a great advantage in terms of daily life behavior and will walking because it has a long stump that allows weight loading at the end of the knee stump. However, the conventional two-stage knee joint will have a problem that there is no space to install the control device of the stirrup, stirrup for complementing the end impact and durability due to the uniaxial knee joint hinge.

The present invention is to solve this, an object of the present invention is to provide a rotatable rotatable knee joint will while still making the most of the advantages of the knee joint.

Another object of the present invention is to provide a rotatable rotatable two-stage joint that is normally coupled and then rotated to enable the rotation and to be able to reconnect back to its normal position when pressed.

To this end, the present invention adheres the rotary adapter coupled to the Sokat on the upper surface of the adapter guide fixed to the knee joint block, the lower end of the rotary adapter is coupled to the load supporting screw, the load supporting screw is coupled to the lower surface of the adapter guide. The upper surface of the rotary adapter is plate-like, the bottom of the plate has a groove, the stopper bar in the groove to be coupled and separated, the stopper bar to engage and separate by the action of the push button.

That is, the present invention provides a knee joint in which a knee block for fixing a socket and a lower knee block are articulated through an axial link and a cap link.

A socket adapter fixed to the socket with an adapter disk and having a tubular adapter tube in the lower center;

An adapter guide fitting the adapter tube of the rotary adapter to the adapter hole and fixed to the knee joint block;

A stopper bar which is shot on the adapter guide to prevent rotation of the rotating adapter; And

When pressing the tapered surface of the stopper bar, the stopper bar is separated from the rotating adapter to provide a rotatable knee joint two-intention, including a push button attached to the adapter guide to rotate the adapter.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

3 is a cross-sectional view showing an exploded state of the present invention, Figure 4 is a perspective view of the combined state of the present invention,

The knee block 32 and the lower knee block 34 fixing the socket constitute a knee joint joint motion through the axial link 35 and the cap link 36,

A rotary adapter 50 which fixes the socket 40 to the adapter disk 54 and has a tubular adapter tube 52 at the lower center thereof;

An adapter guide (60) that adheres the adapter pipe (52) of the rotary adapter (50) to the adapter hole (61) and is fixed to the knee joint block (32);

A stopper bar 70 is shot in the adapter guide port 60 to prevent rotation of the rotary adapter;

When pressing the tapered surface of the stopper bar 70, the stopper bar 70 is separated from the rotary adapter 50, and the push button 80 adhered to the adapter guide 60 is rotatable so that the rotary adapter 50 can be rotated. It is configured to include. Reference numeral 56 is a tapered bearing which abuts against the boundary between the adapter tube 52 and the adapter disk 54 of the rotary adapter 50 and is placed on the upper end of the adapter hole 61 to reduce frictional force. The stopper bar receiving groove 62 which is vertically drilled to open the upper surface of the adapter guide 60 is configured to accommodate the stopper bar 70 that is shot in the bottom by the ball spring 72.

The bottom of the adapter disk 54 is formed with a groove 55 that is coupled to and separated from the top of the stopper bar 70.

A tapered groove 71 is formed at the center of the stopper bar 70.

The tip of the push button 80 forms an inclined tapered surface 81 to lower the stopper bar 70 when pressed into the tapered groove 71.

The push button 80 is composed of a push bar 83 and a head 84, the upper surface of the push bar 83 forms a length groove 82 to form a reciprocating pitch,

The push rod coupling groove (63) of the adapter guide (60) couples the fixing screw (64) whose tip is exposed by the length groove (82).

The inner diameter portion of the adapter tube 52 constitutes an inner diameter screw portion 57, and the inner diameter screw portion 57 is screwed with the load supporting screw 58 to achieve a rotating state of the rotating adapter 50. That is, the load supporting screw 58 is composed of a screw portion 58-1 for screwing the inner diameter screw portion 57, and a head 58-2 for contacting the bottom surface of the adapter guide 60. Numeral 59 denotes a ball bearing that allows the head 58-2 and the adapter guide 60 to adhere. The knee joint 30 has a lower knee joint block 34 and a knee joint block 32 coupled to each other with an axial link 35 and a cam link 36, and the axial link 35 is connected with the knee joint shafts 35a and 35b. 32) and the lower knee joint block (34). The knee block 32 couples the adapter guide 56 with a fixing ring or a coupling screw.

The present invention configured as described above combines the adapter guide 60 to the upper knee joint block 32 forming a conventional knee joint will (the coupling means can be implemented in various ways, such as a conventional screw fitting coupling is omitted) ), The adapter hole (61) of the adapter guide (60) by fitting the adapter tube 52 of the rotary adapter (50). Then, by screwing the load bearing screw 58 to the inner diameter screw portion 57 of the adapter pipe 52, the rotary adapter 50 is coupled to the coalescing in the adapter guide (60). Of course, the rotary adapter 50 may be attached to the adapter guide 60 and then coupled to the knee joint block 32.

Of course, in the adapter guide 60, the spring 72 and the stopper bar 70 are sequentially coupled to the stopper bar receiving groove 62 so that the stopper bar 70 can be fixed to the groove 55 of the adapter disk 54. do. Then, the push bar 83 of the push button 80 is inserted into the push bar coupling groove 63, and the tapered surface 82 has a distance to reciprocate so as to push or not push the tapered groove 71. The front end of the fixing screw 64 is coupled to the length groove (82).

In order to use the present invention assembled as described above, when the socket 40 is coupled to the adapter disk 54 using a separate coupling jig and the knee joint will be used to make both legs or simmer, or sit on a chair and twist the legs. Or the user presses the head 84 of the push button 80. Then, the tapered surface 81 presses the tapered groove 71 to lower the stopper bar 70, and the lowering of the stopper bar 70 separates the upper end of the stopper bar 70 from the groove 55, thereby rotating the adapter ( 50) is freely rotatable, which in turn causes the knee joint including the adapter guide 60 to rotate, freely twisting the legs or forming both legs.

Of course, to the original position, when the leg (knee joint) in the original position, the upper end of the stopper bar 70, which is always pushed up by the spring 72, is coupled to the corresponding groove 55 so that the rotation adapter 50 and the adapter guide ( 60) are combined to allow walking in a normal knee joint state.

As described above, in the present invention, by simply pressing the push button, the rotating adapter rotates in the adapter guide (actually the knee joint rotates), so that the user can bend the knee by twisting the leg freely or by freeing the angle. Make it act like

In addition, it is easy to use just by pressing the push button during use, and after use, if the knee joint achieves a normal angle, it is naturally fixed and there is no need to adjust the angle separately.

Claims (4)

In the knee joint in which the knee block 32 and the lower knee block 34 which secure the socket articulate through the axial link 35 and the cap link 36, A rotary adapter 50 which fixes the socket 40 to the adapter disk 54 and has a tubular adapter tube 52 at the lower center thereof; An adapter guide (60) that adheres the adapter pipe (52) of the rotary adapter (50) to the adapter hole (61) and is fixed to the knee joint block (32); A stopper bar 70 is shot in the adapter guide port 60 to prevent rotation of the rotary adapter; When pressing the tapered surface of the stopper bar 70, the stopper bar 70 is separated from the rotary adapter 50, and the push button 80 adhered to the adapter guide 60 is rotatable so that the rotary adapter 50 can be rotated. Rotating knee joint wills, characterized in that configured to include. 2. The rotary knee joint two-sided joint according to claim 1, wherein a groove (55) is formed on the bottom of the adapter disk (54) to be engaged with and separated from the upper end of the stopper bar (70). According to claim 1, in the center of the stopper bar 70 forms a tapered groove 71, The front end of the push button 80 is a rotary knee joint two-stage will, characterized in that formed a tapered surface 81 inclined to lower the stopper bar 70 when pressed into the tapered groove (71). According to claim 1, the push button 80 is composed of a push bar 83 and the head 84, the upper surface of the push bar 83 forms a length groove 82 to form a reciprocating pitch, The push rod coupling groove (63) of the adapter guide port (60) is a rotary knee joint two-stage will characterized in that the coupling screw 64 is exposed to the front end with a length groove (82).

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