Patent Application
20210030579
The invention relates to finger joint; in particular, to an arthritis correction and fixation device.
The joint is the connecting area of the two bones of the human body, which is in charge of many movements of the human body (such as knee flexion, fist clenching, etc.). Among the joints responsible for exercise, most of the joints are covered by an articular capsule, which looks like a wrap around two bones, with cartilage and synovial fluid. The cartilage provides cushioning for the two bone connections. Synovial fluid is like a lubricating fluid, which makes the bones move smoothly.
Once cartilage wear or synovial secretion is abnormal due to various reasons, pain, swelling, fever, stiffness and the like are generated, which are typical symptoms of arthritis. There are many types of arthritis, such as rheumatoid arthritis, degenerative arthritis, gouty arthritis and the like.
When the patient's fingers suffer from arthritis, the cartilage of the knuckle has worn out, causing the distal phalange and the middle phalange to rub against each other and causing pain, which causes the patient's fingers to feel uncomfortable during movement. Therefore, an appropriate finger correction and fixation device is needed to assist the patient.
Therefore, the invention provides an arthritis correction and fixation device to solve the above-mentioned problems occurred in the prior arts.
An embodiment of the invention is an arthritis correction and fixation device. In this embodiment, the arthritis correction and fixation device is used to connect distal and middle phalanges of a finger. The arthritis correction and fixation device includes a first unit, a second unit and a connection unit. The first unit connects with the distal phalange and has a first threaded portion and a first connecting portion. The second unit connects with the middle phalange and has a second threaded portion and a second connecting portion. The first connecting portion and the second connecting portion are connected through the connection unit, so that the first unit and the second unit can actuate relative to each other. When the first threaded portion is rotated, the first connecting portion drives the second unit to move together in a direction away from the first threaded portion, thereby changing a distance between the distal and middle phalanges. The first unit further includes a screw disposed in the first threaded portion and engaged with the first connecting portion, and rotating directions of the screw and the first threaded portion are opposite to each other. When the first threaded portion is rotated in a first rotational direction, the screw rotates in a second rotational direction opposite to the first rotational direction to move away from the first threaded portion, and the screw drives the first connecting portion engaged with the screw and the second unit connected to the first connecting portion both move away from the first threaded portion, thereby increasing the distance between the distal phalange and the middle phalange.
In an embodiment, the first connecting portion has an accommodating space for accommodating the second connecting portion.
In an embodiment, the first connecting portion has a first through hole and the second connecting portion has a second through hole; when the second connecting portion is accommodated in the accommodating space of the first connecting portion, the first through hole and the second through hole are aligned with each other, and the connection unit passes through the first through hole and the second through hole to connect the first connecting portion and the second connecting portion.
Compared to the prior art, when the patient's finger is suffering from arthritis, the arthritis correction and fixation device of the invention can be disposed in the patient's finger and connected between the distal phalange and the middle phalange, and the joint distraction method can be used according to the actual needs of the patient to adjust the distance between the distal phalange and the middle phalange, so that the distal phalange and the middle phalange can be relatively open to prevent the distal phalange and the middle phalange from rubbing against each other, and the pain caused by the patient's finger movement can be effectively reduced.
The advantage and spirit of the invention may be understood by the following detailed descriptions together with the appended drawings.
So that the manner in which the above recited features of the present disclosure can be understood in detail, a more particular description of the disclosure, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only exemplary embodiments and are therefore not to be considered limiting of its scope, may admit to other equally effective embodiments.
To facilitate understanding, identical reference numerals have been used, where possible, to designate identical elements that are common to the figures. It is contemplated that elements and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
An embodiment of the disclosure is an arthritis correction and fixation device.
In this embodiment, the arthritis correction and fixation device is disposed in the patient's finger and connected between a distal phalange and a middle phalange of the finger. It is noted the device is not limited to this joint connection.
First, it can be seen from
Next, it can be seen from
After the screw 10 is engaged with the connecting base 12 through the fixing portion 11, the first threaded portion 2 can be set on the screw 10 of the first connecting portion 1 to form the first unit 3, as shown in
As shown in
In fact, the connection unit 5 can be a pivoting shaft, so that the first unit 3 and the second unit 4 connected to each other through the connection unit 5 can have a specific angle with respect to each other with the connection unit 5 as an axis, but not limited to this.
As shown in
In addition, as shown in
Another embodiment of the invention is an arthritis correction and fixation device operating method.
In one embodiment, the arthritis correction and fixation device operating method is used to operate an arthritis correction and fixation device to connect a distal phalange and a middle phalange of a finger.
The arthritis correction and fixation device can include a first unit, a second unit and a connection unit. The first unit has a first threaded portion and a first connecting portion. The second unit has a second threaded portion and a second connecting portion.
As shown in
Step 1010: connecting the first connecting portion and the second connecting portion through the connection unit, so that the first unit and the second unit can actuate relative to each other;
Step 1030: connecting the first unit with the distal phalange and connecting the second unit with the middle phalange; and
Step 1050: when the first threaded portion is rotated, the first connecting portion driving the second unit to move together in a direction away from the first threaded portion, thereby changing a distance between the distal phalange and the middle phalange.
In practical applications, the first unit can further include a screw disposed in the first threaded portion and engaged with the first connecting portion, and rotating directions of the screw and the first threaded portion are opposite to each other. When the first threaded portion is rotated in a first rotational direction (e.g., the clockwise direction), the screw rotates in a second rotational direction (e.g., the counterclockwise direction) opposite to the first rotational direction to move away from the first threaded portion, and the screw drives the first connecting portion engaged with the screw and the second unit connected to the first connecting portion both move away from the first threaded portion, thereby the distance between the distal phalange and the middle phalange can be increased through the joint distraction method. Therefore, the distal phalange and the middle phalange do not rub against each other, so it can effectively alleviate the pain caused by finger arthritis.
In practical applications, the first connecting portion has a first through hole and the second connecting portion has a second through hole. The first connecting portion can have an accommodating space for accommodating the second connecting portion. When the second connecting portion is accommodated in the accommodating space of the first connecting portion, the first through hole and the second through hole are aligned with each other, and the connection unit passes through the first through hole and the second through hole to connect the first connecting portion and the second connecting portion, so that the first unit and the second unit can relative to each other, but not limited to this.
Compared to the prior art, when the patient's finger is suffering from arthritis, the arthritis correction and fixation device of the invention can be disposed in the patient's finger and connected between the distal phalange and the middle phalange, and the joint distraction method can be used according to the actual needs of the patient to adjust the distance between the distal phalange and the middle phalange, so that the distal phalange and the middle phalange can be relatively open to prevent the distal phalange and the middle phalange from rubbing against each other, and the pain caused by the patient's finger movement can be effectively reduced.
With the example and explanations above, the features and spirits of the invention will be hopefully well described. Those skilled in the art will readily observe that numerous modifications and alterations of the device may be made while retaining the teaching of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.
