CN104207872A - Force controlled cervical curve traction device - Google Patents

Abstract

The force-controllable cervical curve traction device includes a seat, a traction head cover and a traction arm. The seat back is fixedly connected with a column. The traction arm is composed of a first moment arm and a second moment arm. The middle part of the first moment arm is It is hinged on the upright, and the end of the first force arm extending to the front of the seat is connected with the traction headgear through the traction steel wire. The second force arm is located behind the seat, and the two sides of its end are equipped with cables. The ropes on both sides The cable passes through the fixed pulley mechanism arranged on both sides of the seat and is connected to each other to form a closed-loop force control device. Pulling the force control device can make the traction arm rotate around the hinge point between the first force arm and the column. The invention is designed according to the mechanical structure of the human body, so that the cervical spine of the patient can be restored to the normal and original physiological curvature when the patient is pulled, and the patient can be treated in a sitting position, and the pulling force of the pulling arm can be controlled by adjusting the extension length of the piston rod of the cylinder , to meet the needs of patients.

Description

Force controllable cervical curve traction device

technical field

The invention relates to the field of medical devices, in particular to a force-controllable cervical curve traction device.

Background technique

The core of cervical spondylosis is that the original physiological curve of the cervical spine has changed, which is usually caused by long-term desk work, study or driving. The compression of the root and nucleus pulposus causes blood circulation disorder and nutritional disorder in the neck. Only by eliminating the pathogenic factors of the neck and releasing the compression and adhesion of the soft tissues can the blood circulation be improved. Apply a certain force to the intervertebral disc through the neck to widen the intervertebral disc space without compressing the nerve root and nucleus pulposus, so as to relieve the pain of the patient. Existing cervical traction devices generally achieve linear traction, but actual clinical application has found that after long-term linear traction, the effect of alleviating the symptoms of cervical spondylosis is negligible, and even destroys the normal biological curvature of the cervical spine, causing damage to the cervical spine.

Contents of the invention

The purpose of the present invention is to overcome the problem that linear traction in the prior art is difficult to effectively achieve the rehabilitation effect of cervical spondylosis, and even cause damage to the cervical spine, and to provide a controllable cervical spine curve traction device that can match the biological curvature of the human cervical spine.

The technical solution adopted by the present invention to achieve the above object is: a force-controllable cervical spine curve traction device, including a seat with a chair back, a traction head cover and a traction arm, and a column is fixedly connected to the chair back of the seat. The traction arm is composed of the first moment arm and the second moment arm connected at an obtuse angle. The middle part of the first moment arm is hinged on the column, and the end of the first moment arm extending to the front of the seat is connected with the traction headgear through the traction wire. The second moment arm is located behind the seat, and both sides of its end are provided with cables, and the cables on both sides are connected to each other to form a closed-loop force control device through the fixed pulley mechanism provided on both sides of the seat, and the pulley is pulled The force control device can make the traction arm rotate around the hinge point between the first moment arm and the column; the traction headgear includes a horizontal support rod, a cervical traction belt connected to both ends of the horizontal support rod, and a cervical traction belt The back of the neck fixing belt at the middle part, the lower end of the neck traction belt and the back of the neck fixing belt are connected by a frenulum.

Further, one end of the frenulum is fixed on one side of the lower end of the cervical traction belt, and a lacing ring is provided on the opposite side of the lower end of the cervical traction belt. Lace-loop slipknot secures connection.

The traction steel wire is provided with a steel wire lock. The steel wire lock makes the end of the traction steel wire form a closed-loop hook for fixing the traction headgear. The length of the traction steel wire can be adjusted through the steel wire lock to meet different treatment requirements.

In the present invention, each part is detachable, and the material of the main traction parts is made of aluminum alloy, which is light in weight and easy to carry. The upright column can be set as a telescopic column that can be appropriately stretched and determined according to the needs. The upright column is fixed on the back of the seat by a connector; the upper part of the upright column is hingedly connected with the traction arm. The sliding sleeve is hinged, and the circumferential surface of the sliding sleeve is provided with a set screw for tightening the first moment arm. The length of the first moment arm protruding from the sliding sleeve can be determined according to different treatment objects to meet the treatment requirements.

Beneficial effects of the present invention:

(1) The rope passes through the fixed pulley mechanism set on the seat to form a closed-loop force control device. The rope pulley is placed on the patient's feet sitting on the seat, and the rope can be pulled and pulled by bending and stretching the legs. The arm rotates around its hinge point with the column, and the trajectory of the trailing end of the traction arm is an arc line with the hinge point as the center and the straight-line distance from the hinge point to the traction end of the first arm as the radius, which is different from the existing Compared with the technology, the convex arc movement of the traction end of the traction arm can make the cervical spine be pressed forward by the fixed belt at the back of the neck, and the neck and jaw traction belt can lift the cervical spine upwards. The joint action of the two makes the traction of the cervical spine The extension curve can coincide with the biological arc of the human cervical spine, avoiding the defect that the linear traction in the prior art causes damage to the cervical spine.

(2) By controlling the size of the radial angle of the arc movement track of the traction end, the adjustment of the traction force can be realized, and it is easy to use, safe and reliable. The cervical spine curve traction device is designed according to the mechanical structure of the human body, so that the cervical spine of the patient can be restored to the normal and original physiological curvature during traction. The patient can be treated in a sitting position, and the traction arm can be controlled by adjusting the extension length of the piston rod of the cylinder. The traction strength meets the needs of patients.

(3) In the present invention, the first moment arm and the second moment arm arranged at an obtuse angle to each other can amplify the flexion and extension range of the human leg during traction, that is, the tiny displacement of flexion and extension can meet the requirements of the first moment arm at the traction end. A large change in the radial angle of the arc motion track.

Description of drawings

Fig. 1 is a schematic diagram of the present invention;

Fig. 2 is the schematic diagram of traction headgear;

Fig. 3 is the enlarged schematic diagram of marking A in Fig. 1;

FIG. 4 is an enlarged schematic diagram marked B in FIG. 1 .

Reference signs: 1, seat, 2, traction headgear, 20, horizontal support bar, 21, neck traction belt, 22, fixed belt behind the neck, 3, column, 4, first moment arm, 5, second force Arm, 6, traction steel wire, 7, rope, 8, fixed pulley mechanism, 9, lacing, 10, lacing perforation, 11, lacing ring, 12, sliding sleeve, 13, set screw, 14, Wire lock buckle.

Detailed ways

The force-controllable cervical curve traction device, as shown in Figure 1, comprises a seat 1 with a chair back, a traction headgear 2, a traction arm and a column 3, and the column 3 is vertically fixed on the chair back of the seat 1. Wherein, the traction arm is formed by connecting the first moment arm 4 and the second moment arm 5 which form an obtuse angle to each other through end connections, the middle part of the first moment arm 4 is hinged on the column 3, and the first moment arm 4 stretches toward the seat 1 One end in the front is connected with the traction headgear 2 through the traction steel wire 6; The set rope walking fixed pulley mechanism 8 is connected with each other to form a closed-loop force control device. When in use, the rope 7 in the force control device is placed on the sole of the human body, and the rope 7 can pull the traction arm to rotate around its hinge point with the column 3 by bending and stretching the human leg, that is, when the human body stretches the leg , to achieve the traction of the cervical spine; when the human leg is bent, the traction force is released. The force control device can realize traction control according to the degree of flexion and extension of the patient's own legs, and is convenient to use and operate.

The traction headgear 2 shown in Figure 2 includes a horizontal support bar 20, a cervical and maxillary traction belt 21 connected to the two ends of the horizontal support bar 20, and a fixed belt 22 behind the neck added to the middle of the cervical and chin traction belt 21, and the cervical and chin traction belt 21 and the lower end of the fixation belt 22 behind the neck are connected by a frenulum 9. Wherein, one end of the frenulum 9 is fixed on one side of the lower end of the cervical traction belt 21, and the opposite side of the lower end of the cervical traction belt 21 is provided with a lacing ring 11, and the frenulum 9 passes through the frenulum provided on the fixed belt 22 behind the neck After the perforation 10, it is fixedly connected with the tie ring 11 with a slip knot.

Further, as shown in Figure 3, the first moment arm 4 is hinged to the sliding sleeve 12 sleeved on the column 3, and the circumferential surface of the sliding sleeve 12 is provided with a set screw 13 for tightening the first moment arm 4 .

Further, as shown in FIG. 4 , a wire lock 14 is provided on the pulling wire 6 , and the wire lock 14 makes the end of the pulling wire 6 form a closed-loop hook for fixing the pulling headgear 2 .

The traction device adopts a belt-shaped traction headgear that adapts to the human body structure, so that the patient can complete the treatment process in a comfortable state. The flexion and extension force of human legs is cleverly used to provide force for traction, which saves space and cost. The patient can sit straight on the seat 1, and the whole body is in a relaxed state. With the increase of the stretching degree of the human legs, the cervical spine and the shoulder, chest and trunk are stretched statically, and the patient can control the stretching degree of the legs according to the condition , according to their own feeling to control the size of the traction, to avoid unnecessary injury to the patient caused by traction out of control. At the same time, since the force control is completed by the patient himself, the pain and panic caused by improper application of force are eliminated, and the therapeutic effect is more obvious. The most important thing is that the motion trajectory of the traction end of the first moment arm 4 is a circular arc line. Compared with the prior art, the traction and stretching curve of the cervical spine can match the biological arc of the human cervical spine, avoiding the linear traction in the prior art. Defects that cause injury to the cervical spine. In order to further determine the curative effect of the traction device, the prototype of the traction device was clinically tested in the hospital, and the analysis of the use of the traction device by 50 patients was tracked: before use, it was diagnosed as cervical spondylosis according to medical appraisal. After 30 to 45 days of treatment, 41 cases had obvious curative effect, 5 cases felt relief, and the total efficiency reached 92%. It is proved that the traction device is of great help to the process of cervical spine rehabilitation.

Claims (4)

1. The force-controllable cervical curve traction device is characterized in that it includes a seat (1) with a chair back, a traction headgear (2) and a traction arm, and a column (3) is fixedly connected to the chair back of the seat (1). ), the traction arm is composed of the first moment arm (4) and the second moment arm (5) connected at an obtuse angle, the middle part of the first moment arm (4) is hinged on the column (3), and the first One end of the moment arm (4) extending to the front of the seat (1) is connected with the traction headgear (2) through the traction steel wire (6), the second moment arm (5) is located behind the seat (1), and the two sides of its end Both are equipped with cables (7), and the cables (7) on both sides are connected to each other through the fixed pulley mechanism (8) provided on both sides of the seat (1) to form a closed-loop force control device, which pulls the force control device The traction arm can be rotated around the hinge point between the first moment arm (4) and the column (3); the traction headgear (2) includes a horizontal support rod (20), a neck connected to both ends of the horizontal support rod (20) Chin traction belt (21) and neck back fixing belt (22) added in the middle part of neck and neck traction belt (21), the lower end of neck and neck traction belt (21) and neck back fixing belt (22) pass through tie belt (9) connect. 2. The force-controllable cervical curve traction device according to claim 1, characterized in that: the first moment arm (4) is hinged to the sliding sleeve (12) sleeved on the column (3), and A set screw (13) for tightening the first moment arm (4) is provided on the circumferential surface of the sliding sleeve (12). 3. The force-controllable cervical curve traction device according to claim 1, characterized in that: the traction steel wire (6) is provided with a steel wire lock (14), and the steel wire lock (14) makes the traction steel wire ( The end of 6) forms a closed-loop hook for fixing the traction headgear (2). 4. The force-controllable cervical curve traction device according to claim 1, characterized in that: one end of the lace (9) is fixed on one side of the lower end of the cervical traction belt (21), and the cervical traction belt ( 21) A lacing ring (11) is provided on the opposite side of the lower end, and the lacing ring (9) passes through the lacing perforation (10) provided on the back of the neck fixing belt (22) and is fixedly connected with the lacing ring (11) with a slipknot.