A cervical traction frame

Abstract

The present invention relates to the field of medical devices, and specifically to a cervical traction frame. The cervical traction frame comprises an adjustment lock, a bracket and a traction belt, wherein the bracket is hoisted at the lower end of the adjustment lock, the traction belt is arranged on the bracket and is used to fix the patient's head, the adjustment lock comprises a base, a rotating drum, a pull cylinder, a tension adjustment component, and a locking component, a connecting structure is arranged between the rotating drum and the pull cylinder, a traction rope is arranged on the rotating drum, the traction rope is connected to the bracket, and a pull rope is arranged on the pull cylinder, and the pull rope pulls the pull cylinder to rotate. The present invention can pre-set the traction force that the traction rope needs to bear through the tension adjustment component, and during the wearing process of the patient, the pull rope is repeatedly pulled to drive the rotating drum to rotate and then reel in the traction rope. When the tension of the traction rope reaches the set value, the pull rope can no longer drive the rotating drum to rotate, thereby preventing the patient from judging whether the traction force of the traction rope is appropriate through his own perception, thereby preventing the inappropriate traction force from causing damage to the patient's cervical spine.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, and in particular to a cervical vertebra traction frame. Background Art

[0002] Traction is a commonly used treatment method in orthopedics. The cervical spine belongs to the subdivision of orthopedics. The treatment methods of cervical spondylosis are divided into non-surgical treatment and surgical treatment. Traction is the main means of non-surgical treatment of cervical spondylosis to relieve symptoms. Effective traction can relieve neck muscle spasms, relieve pain symptoms, increase intervertebral space and intervertebral foramen, stabilize the protruding nucleus pulposus and annulus fibrosus tissue, relieve and relieve nerve root compression and stimulation, promote nerve root edema absorption, relieve vertebral compression on vertebral arteries, promote blood circulation, facilitate the disappearance of local congestion, swelling and hyperplasia, loosen adhesion of joint capsule, improve and restore uncovertebral joints, adjust facet joint dislocation and vertebral slippage, adjust and restore the damaged internal and external balance of the cervical spine, and restore the normal function of the cervical spine. The cervical traction device is designed according to this principle and is a cervical spondylosis treatment product that is convenient for patients to use at home.

[0003] Existing cervical traction devices are generally divided into two categories, neck support type and hanging type. Among them, the hanging type has a wider range of uses due to its obvious short-term effect and strong versatility. However, the existing hanging cervical traction devices are limited by the traditional fixed structure. The size of the traction force during hanging can only be determined by the patient's feeling. The traction force during treatment is not accurate and the treatment effect is poor.

[0004] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0005] According to the deficiencies of the prior art, the present invention provides a cervical vertebra traction frame to solve the problem that the existing cervical vertebra traction frame cannot reliably control the traction force.

[0006] A cervical traction frame of the present invention adopts the following technical solution: it includes an adjustment locker, a bracket and a traction belt, the adjustment locker can be installed on the top of the door panel; the bracket is hoisted at the lower end of the adjustment locker; the traction belt is arranged on the bracket for fixing the patient's head;

[0007] Adjustment lock includes:

[0008] A base, the base can be installed on the door panel, and the base includes a cylinder seat;

[0009] A rotating drum is rotatably arranged inside the drum seat, a traction rope is arranged on the rotating drum, and the lower end of the traction rope passes through the drum seat and is connected to the bracket;

[0010] The pull cylinder is rotatably arranged on the cylinder seat, a pull rope is arranged on the pull cylinder, and the lower end of the pull rope is naturally suspended. The pull rope is used to pull the pull cylinder to rotate. A torsion spring is arranged between the pull cylinder and the cylinder seat, and the torsion spring is used to reset the pull cylinder;

[0011] The pull drum is located at the front side of the rotating drum, and a connecting structure is provided between the pull drum and the rotating drum. The connecting structure is configured to make the pull drum drive the rotating drum to rotate forward to reel in the traction rope when the pull drum rotates forward and the pulling force of the traction rope is less than the set pulling force; make the pull drum rotate forward relative to the rotating drum when the pull drum rotates forward and the pulling force of the traction rope is greater than the set pulling force; make the pull drum rotate in the opposite direction relative to the rotating drum when the pull drum is reset; make the rotating drum rotate in the opposite direction relative to the pull drum when the rotating drum is reset;

[0012] A tension adjustment component is configured to pre-set the pulling force that the traction rope needs to withstand;

[0013] The locking assembly has a locked state and an unlocked state. When the locking assembly is in the locked state, the drum is prevented from reversing, so that the traction rope can be kept reeled in; when the locking assembly is in the unlocked state, the drum is allowed to reverse, so that the traction rope can be released.

[0014] Optionally, the connection structure includes a pressure-sensitive ring, which is arranged inside the cylinder seat and between the rotating cylinder and the pulling cylinder, and the pressure-sensitive ring can move axially relative to the cylinder seat and can rotate circumferentially relative to the cylinder seat, and the end of the pressure-sensitive ring close to the rotating cylinder is provided with a one-way tooth four, and the end of the pressure-sensitive ring close to the pulling cylinder is provided with a one-way tooth three;

[0015] A one-way tooth 2 is arranged on the side of the rotating drum close to the pressure-sensitive ring. The one-way tooth 2 cooperates with the one-way tooth 4. Both the one-way tooth 2 and the one-way tooth 4 are triangular teeth with a stop surface and an inclined surface. In the direction of the positive rotation of the rotating drum, the stop surface of the one-way tooth 2 is located in front of the inclined surface, and the stop surface of the one-way tooth 4 is located behind the inclined surface.

[0016] A one-way tooth five is arranged on the side of the pull cylinder close to the pressure-sensitive ring, and the one-way tooth five cooperates with the one-way tooth three. Both the one-way tooth five and the one-way tooth three are triangular teeth, and have a stop surface and an inclined surface. In the direction of the pull cylinder's positive rotation, the stop surface of the one-way tooth five is located in front of the inclined surface, and the stop surface of the one-way tooth three is located behind the inclined surface. The one-way tooth five can be retracted and is initially in an extended state.

[0017] The pull cylinder can move along the axial direction of the cylinder seat. The tension adjustment component acts on the pull cylinder. The tension adjustment component enables the pull cylinder to have a pre-tightening force that always approaches the pressure-sensitive ring, and the pre-tightening force can be adjusted.

[0018] Optionally, the tension adjustment assembly includes a tension adjustment ring and a pressure adjustment column;

[0019] The pressure regulating column is coaxially rotatably inserted into the cylinder seat, the pressure regulating column is located inside the rotating cylinder and the pulling cylinder and one end of the pressure regulating column extends out of the pulling cylinder, and a handle is provided at the end of the pressure regulating column extending out of the pulling cylinder to facilitate the rotation of the pressure regulating column;

[0020] The tension adjustment ring is coaxially arranged on the cylinder seat and sleeved on the outside of the pressure adjustment column. The tension adjustment ring is threadedly connected to the pressure adjustment column and is axially slidably connected to the cylinder seat.

[0021] A spring four is connected between the tension adjustment ring and the pull cylinder, and the spring four makes the pull cylinder tend to approach the pressure-sensitive ring.

[0022] Optionally, the locking assembly includes a locking block, a top block, and a spring connected between the locking block and the top block;

[0023] The locking block and the top block are both radially slidably arranged on the cylinder seat, and the locking block is farther away from the axis of the cylinder seat than the top block;

[0024] A one-way tooth 1 is arranged at the rear end of the rotating drum, and a one-way tooth 6 is arranged on the locking block. The one-way tooth 6 can cooperate with the one-way tooth 1, and the cooperation between the two can prevent the rotating drum from reversing.

[0025] A top ring is axially slidably arranged inside the cylinder seat. The top ring is cylindrical and includes a locking section and an unlocking section coaxially connected. The unlocking section is located at the rear end, and the outer diameter of the unlocking section is smaller than the outer diameter of the locking section. The top block is in sliding contact with the outer peripheral wall of the top ring. When the top block corresponds to the locking section, the one-way tooth six is ​​combined with the one-way tooth one, and the locking assembly is in a locked state. When the top block corresponds to the unlocking section, the one-way tooth six is ​​separated from the one-way tooth one, and the locking assembly is in an unlocked state.

[0026] Optionally, a transmission cylinder is inserted into the interior of the cylinder seat, the transmission cylinder is located inside the top ring and can rotate relative to the cylinder seat, the transmission cylinder is connected to the top ring by a spiral transmission, the transmission cylinder rotates synchronously with the pull cylinder, and when the pull rope is pulled down to the limit, the pull cylinder rotates at an angle that causes the top ring to move to a position corresponding to the top block and the unlocking section.

[0027] Optionally, a synchronous arc plate is provided at one end of the transmission cylinder close to the pull cylinder, and a circumferential limiting hole is provided on one end surface of the pull cylinder close to the transmission cylinder, and the synchronous arc plate is inserted into the circumferential limiting hole.

[0028] Optionally, the inner circumferential wall of the top ring is provided with a spiral groove, the outer circumferential wall of the transmission cylinder is provided with a convex column, and the convex column is slidably arranged inside the spiral groove.

[0029] Optionally, the base also includes a steel section and a fixed presser foot, the cylinder seat and the fixed presser foot are both fixedly arranged at the bottom of the steel section, the cylinder seat and the fixed presser foot are arranged at an interval and the cylinder seat is located in front of the fixed presser foot, and a movable presser foot is inserted at one end of the cylinder seat close to the fixed presser foot, and the movable presser foot can slide elastically axially relative to the cylinder seat and initially tends to approach the fixed presser foot.

[0030] Optionally, the cylinder seat has an outer cylinder, a side of the outer cylinder close to the fixed presser foot has an expansion cylinder, an annular chamber is formed between the expansion cylinder and the outer cylinder, and the movable presser foot is axially slidably arranged in the annular chamber; a second spring is connected between the movable presser foot and the annular chamber;

[0031] The rear end of the expansion cylinder is provided with a plurality of circumferentially evenly distributed elastic petals, and the inner wall of the elastic petals is provided with a raised laminate; a locking column is coaxially slidably inserted inside the expansion cylinder, and a convex strip is provided at the rear end of the locking column. When the convex strip contacts the laminate, the elastic petals can expand outwards and thereby tighten the movable presser foot. When the convex strip is misaligned with the laminate, the elastic petals are in a normal state, and the expansion cylinder releases the tension on the movable presser foot; the locking column is fixedly connected to the top ring, and when the top block corresponds to the unlocking section of the top ring, the convex strip is separated from the laminate.

[0032] Optionally, a slide rod is connected to the upper end of the bracket, a slide cylinder is connected to the lower end of the traction rope, the slide rod is slidably inserted into the slide cylinder, and a spring is arranged between the top of the slide rod and the slide cylinder.

[0033] The beneficial effect of the present invention is that a cervical traction frame of the present invention can pre-set the traction force that the traction rope needs to bear through a tension adjustment component. When the patient wears it, the pull rope is repeatedly pulled to drive the rotating drum to rotate and then reel in the traction rope. When the tension of the traction rope reaches the set value, pulling the pull rope can no longer drive the rotating drum to rotate, thereby avoiding the patient from judging whether the traction force of the traction rope is appropriate through his own perception, thereby avoiding damage to the patient's cervical spine caused by inappropriate traction force.

[0034] Furthermore, by linking the locking assembly and the pull cylinder, when the device needs to be removed, the pull rope is pulled hard to release the pull rope to the limit. The pull cylinder drives the locking assembly to switch states, unlocks the rotating drum, and pulls the traction rope downward to release the traction force. In this way, traction and unloading can be completed using only one pull rope, which is convenient to operate.

[0035] Furthermore, the movable presser foot is tightened by setting a tightening cylinder and a locking column, and by linking the locking column with the pulling cylinder, during the treatment, the movable presser foot is tightened by the tightening cylinder, so that the position of the movable presser foot is more reliable and the device is prevented from loosening during the treatment. After the treatment, the rotating cylinder unloads the force and the tightening cylinder automatically releases the tension, so that the device can be disassembled. It is convenient and quick to use and simple to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 This is a schematic diagram of the installation of a cervical traction frame of the present invention;

[0038] Figure 2 It is a schematic diagram of the overall structure of a cervical traction frame of the present invention;

[0039] Figure 3 It is a cross-sectional view of the adjustment lock in the present invention;

[0040] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0041] Figure 5 It is a structural schematic diagram of a base for adjusting a locking device in the present invention;

[0042] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0043] Figure 7 A cross-sectional view of a rotating drum for adjusting a locking device in the present invention;

[0044] Figure 8 A cross-sectional view of a locking cylinder for adjusting a locking device in the present invention;

[0045] Fig. 9 A cross-sectional view of a movable presser foot for adjusting a locking device in the present invention;

[0046] Fig.10 A cross-sectional view of a locking assembly for adjusting a locking device in the present invention;

[0047] Fig.11 A cross-sectional view of a pressure-sensitive ring for adjusting a locking device in the present invention;

[0048] Fig.12 A cross-sectional view of a locking column and a top ring of an adjustable lock in the present invention;

[0049] Fig.13 A cross-sectional view of a tension adjustment ring and a spring 4 for adjusting the locking device in the present invention;

[0050] Fig.14 A cross-sectional view of a pressure adjustment column for adjusting a locking device in the present invention;

[0051] Fig.15 It is a cross-sectional view of the pull cylinder for adjusting the lock in the present invention.

[0052] In the figure:

[0053] 10. Door panels;

[0054] 20, bracket; 210, hook; 230, slide cylinder; 240, slide rod; 250, spring 1;

[0055] 30. Adjust the lock;

[0056] 300, base; 301, steel; 302, fixed presser foot; 303, cylinder seat; 3031, outer cylinder; 3032, expansion cylinder; 3032a, laminated layer; 3032b, elastic petal; 3033, positioning cylinder; 3033a, guide slide groove; 3033b, first ring groove; 3034, positioning ring; 3034a, adjustment port;

[0057] 310, rotating drum; 311, traction rope; 312, locking ring; 314, one-way tooth 1; 317, one-way tooth 2;

[0058] 320, transmission cylinder; 321, synchronous arc plate;

[0059] 330, movable presser foot; 331, rubber pressure pad; 332, receiving groove; 333, spring 2;

[0060] 340, locking assembly; 341, locking block; 342, top block; 343, spring three; 344, one-way tooth six; 345, pressure strip;

[0061] 350, pressure-sensitive ring; 351, one-way tooth three; 352, one-way tooth four;

[0062] 361, locking column; 3611, convex strip; 363, top ring; 3631, unlocking section; 3632, locking section; 3633, spiral groove;

[0063] 370, tension adjustment ring; 372, spring four; 373, internal thread; 374, circumferential limit platform;

[0064] 380, pressure regulating column; 381, external thread; 382, ​​handle;

[0065] 390. Pull cylinder; 391. Pull rope; 3911. Pull ring; 392. Torsion spring; 393. One-way tooth five; 394. Circumferential limiting hole. DETAILED DESCRIPTION

[0066] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0067] like Figures 1 to 15As shown, a cervical traction frame provided by an embodiment of the present invention includes an adjustment lock 30, a bracket 20 and a traction belt. The adjustment lock 30 can be installed on the top of the door panel 10; the bracket 20 is hoisted at the lower end of the adjustment lock 30; the traction belt (not shown in the figure) is arranged on the bracket 20 for fixing the patient's head. Specifically, a hook 210 is arranged at the bottom of the bracket 20, and both ends of the traction belt are hooked on the hook 210. A wearing hole is opened in the middle of the traction belt. The patient's head passes through the wearing hole and is located between the traction belt and the bracket 20. The adjustment lock 30 is operated to drive the bracket 20 to rise, so as to traction the patient's cervical spine.

[0068] Wherein, the adjustment lock 30 comprises:

[0069] The base 300 includes a steel section 301, a cylinder seat 303 and a fixed presser foot 302. The cylinder seat 303 and the fixed presser foot 302 are both fixedly arranged at the bottom of the steel section 301. The cylinder seat 303 and the fixed presser foot 302 are arranged at intervals and the cylinder seat 303 is located in front of the fixed presser foot 302. Both ends of the cylinder seat 303 are open. One end of the cylinder seat 303 close to the fixed presser foot 302 is inserted with a movable presser foot 330. The movable presser foot 330 can slide axially elastically relative to the cylinder seat 303 and initially has a tendency to approach the fixed presser foot 302, and then cooperates with the fixed presser foot 302 to clamp the base 300 to the top of the door panel 10;

[0070] The rotating drum 310 is rotatably disposed inside the drum seat 303. A traction rope 311 is disposed on the rotating drum 310. The upper end of the traction rope 311 is wound around the rotating drum 310, and the lower end passes through the drum seat 303 and is connected to the bracket 20.

[0071] The pull cylinder 390 is rotatably arranged on the cylinder seat 303. A pull rope 391 is arranged on the pull cylinder 390. The upper end of the pull rope 391 is wound around the pull cylinder 390, and the lower end is naturally suspended. The pull rope 391 is used to pull the pull cylinder 390 to rotate. A pull ring 3911 is arranged at the lower end of the pull rope 391 to facilitate pulling the pull rope 391. A torsion spring 392 is arranged between the pull cylinder 390 and the cylinder seat 303. The torsion spring 392 is used to reset the pull cylinder 390.

[0072] The pull cylinder 390 is located at the front side of the rotating drum 310, and a connection structure is provided between the pull cylinder 390 and the rotating drum 310. The connection structure is configured to make the pull cylinder 390 drive the rotating drum 310 to rotate forward to reel in the traction rope 311 when the pull rope 391 pulls the pull cylinder 390 to rotate forward and the tension of the traction rope 311 is less than the set tension; when the pull rope 391 pulls the pull cylinder 390 to rotate forward and the tension of the traction rope 311 is greater than the set tension, the pull cylinder 390 rotates forward relative to the rotating drum 310; when the pull cylinder 390 is reset, the pull cylinder 390 rotates reversely relative to the rotating drum 310; when the rotating drum 310 is reset, the rotating drum 310 rotates reversely relative to the pull cylinder 390;

[0073] A tension adjustment component, configured to pre-set the tension that the traction rope 311 needs to withstand;

[0074] The locking assembly 340 has a locking state and an unlocking state. When the locking assembly 340 is in the locking state, the reversal of the rotating drum 310 is blocked, so that the traction rope 311 can be kept reeled up for wearing and treatment; when the locking assembly 340 is in the unlocking state, the rotating drum 310 is allowed to be reversed, so that the traction rope 311 can be released for the next use. The present invention sets the traction force that the traction rope 311 needs to bear through the tension adjustment assembly. The setting of the traction force of the traction rope 311 is selected according to the examination of the cervical spine or according to the doctor's advice. During the wearing process of the patient, the pull rope 391 is repeatedly pulled to drive the rotating drum 310 to rotate and then reel the traction rope 311. When the tension of the traction rope 311 reaches the set value, the pull rope 391 can no longer drive the rotating drum 310 to rotate, so as to avoid the patient judging whether the traction force of the traction rope 311 is appropriate through his own perception, thereby avoiding the inappropriate traction force from causing damage to the patient's cervical spine.

[0075] In a further embodiment, referring to Figure 4 , Figure 7 , Fig.11 and Fig.15 The connecting structure includes a pressure-sensitive ring 350, which is arranged inside the cylinder seat 303 and between the rotating cylinder 310 and the pulling cylinder 390. The pressure-sensitive ring 350 can move axially relative to the cylinder seat 303 and can rotate circumferentially relative to the cylinder seat 303. A one-way tooth four 352 is arranged at one end of the pressure-sensitive ring 350 close to the rotating cylinder 310, and a one-way tooth three 351 is arranged at one end of the pressure-sensitive ring 350 close to the pulling cylinder 390.

[0076] A one-way tooth 2 317 is provided on one side of the rotating drum 310 close to the pressure-sensitive ring 350. The one-way tooth 2 317 cooperates with the one-way tooth 4 352. Both the one-way tooth 2 317 and the one-way tooth 4 352 are triangular teeth with a stop surface and an inclined surface. In the positive rotation direction of the rotating drum 310, the stop surface of the one-way tooth 2 317 is located in front of the inclined surface, and the stop surface of the one-way tooth 4 352 is located behind the inclined surface.

[0077] A one-way tooth five 393 is provided on the side of the pull cylinder 390 close to the pressure-sensitive ring 350. The one-way tooth five 393 cooperates with the one-way tooth three 351. Both the one-way tooth five 393 and the one-way tooth three 351 are triangular teeth with a stop surface and an inclined surface. In the direction of the positive rotation of the pull cylinder 390, the stop surface of the one-way tooth five 393 is located in front of the inclined surface, and the stop surface of the one-way tooth three 351 is located behind the inclined surface. The one-way tooth five 393 can retract and is initially in an extended state.

[0078] The pull cylinder 390 can move along the axial direction of the cylinder seat 303. The tension adjustment component acts on the pull cylinder 390. The tension adjustment component enables the pull cylinder 390 to have a pre-tightening force that always approaches the pressure-sensitive ring 350, and the pre-tightening force can be adjusted. It can be understood that when the pull rope 391 drives the pull cylinder 390 to rotate in the forward direction and the traction force of the traction rope 311 does not reach the set value, the pull cylinder 390 drives the pressure-sensitive ring 350 to rotate through the stop surface of the one-way tooth five 393 and the one-way tooth three. Due to the squeezing of the pull cylinder 390 on the pressure-sensitive ring 350, the pressure-sensitive ring 350 drives the rotating drum 310 to rotate in the forward direction through the top pressure of the inclined surface of the one-way tooth four 352 and the one-way tooth two 317, thereby winding up the traction rope 311; when the pull rope 391 is reset, the rotating drum 310 reverses under the action of the torsion spring 392, and the one-way tooth five 393 retracts under the action of the inclined surface of the one-way tooth three 351, allowing the rotating drum 310 to reverse; the pull rope 391 is repeatedly pulled, and during this process the rotating drum 310 cannot reverse under the action of the locking assembly 340, and the traction rope 311 is continuously wound until the traction force of the traction rope 311 reaches the set value. After that, continue to pull the pull rope 391 to drive the pull cylinder 390 to rotate forward, and the pull cylinder 390 drives the pressure-sensitive ring 350 to rotate forward. Because the rotation resistance of the rotating cylinder 310 increases, the pressure-sensitive ring 350 cannot push the rotating cylinder 310 to rotate forward. Under the action of the inclined surface of the one-way tooth 2 317, the pressure-sensitive ring 350 moves in the direction away from the rotating cylinder 310 and can rotate forward relative to the rotating cylinder 310. The rotating cylinder 310 no longer rotates, and the traction rope 311 no longer reels. When the patient senses that the traction rope 311 is no longer reeled after repeatedly pulling the pull rope 391, the wearing is over, and the traction can be maintained for a certain length of time for treatment. After the treatment is over, the locking assembly 340 switches the state to allow the rotating cylinder 310 to reverse, and the patient pulls the traction rope 311 downward. The rotating cylinder 310 overcomes the squeezing force of the pressure-sensitive ring 350 and reverses, and the traction rope 311 unloads the force, and the traction belt can be removed.

[0079] Furthermore, in order to achieve the retraction of the one-way tooth 5 393, a groove is provided on the pull cylinder 390 at a position corresponding to the one-way tooth 5 393. In one embodiment, the one-way tooth 5 393 is connected to the groove through an elastic member, and the elastic member makes the one-way tooth 5 393 in an extended state. The elastic member can be a light spring; in other embodiments, the one-way tooth 5 393 can also be connected to the pull cylinder 390 at a vertex away from the stop surface, and the connection part can be deformed, for example, a metal spring is used. When the pull cylinder 390 is reversed, the one-way tooth 5 393 is squeezed into the groove. Naturally, the one-way tooth 5 393 can also be connected to the pull cylinder 390 at a vertex away from the stop surface, and the one-way tooth 5 393 can be retracted by other methods such as using a torque spring to control the resetting of the one-way tooth 5 393. It should also be added that in order to ensure the reliability of the transmission, there are multiple one-way teeth 5 393 evenly distributed along the circumferential direction of the pull cylinder 390.

[0080] In a further embodiment, the tension adjustment assembly includes a tension adjustment ring 370 and a pressure adjustment column 380 .

[0081] The pressure regulating column 380 is coaxially rotatably inserted into the cylinder seat 303. The pressure regulating column 380 is located inside the rotating cylinder 310 and the pulling cylinder 390 and one end extends out of the pulling cylinder 390. A handle 382 is provided on the end of the pressure regulating column 380 extending out of the pulling cylinder 390 to facilitate the rotation of the pressure regulating column 380.

[0082] The tension adjustment ring 370 is coaxially arranged on the cylinder seat 303 and sleeved on the outside of the pressure adjustment column 380. The inner wall of the tension adjustment ring 370 is provided with an internal thread 373, and the outer wall of the pressure adjustment column 380 is provided with an external thread 381. The tension adjustment ring 370 and the pressure adjustment column 380 are connected by the internal thread 373 and the matching thread. The tension adjustment ring 370 is axially slidably connected to the cylinder seat 303.

[0083] A spring 4372 is connected between the tension adjustment ring 370 and the pull cylinder 390. The spring 4372 makes the pull cylinder 390 tend to approach the pressure sensing ring 350. The specific spring 4372 is a tension spring, see Figure 4 and Fig.13 , the spring 4 372 always provides the pull force for the pull cylinder 390 to go backward (left side in the figure), and the pressure adjustment column 380 is rotated, and the pressure adjustment column 380 drives the tension adjustment ring 370 to move axially through the threaded fit. When the tension adjustment ring 370 is at the extreme position of the rear end (left side in the figure), the spring 4 372 is the longest and the tension of the pull cylinder 390 is the largest. When the tension adjustment ring 370 is at the extreme position of the front end (right side in the figure), the spring 4 372 is the shortest and the tension of the pull cylinder 390 is the smallest. The elongation of the spring 4 372 is controlled by moving the tension adjustment ring 370, so as to adjust the top pressure of the pull cylinder 390 on the pressure-sensitive ring 350. The pressure adjustment column 380 is provided with a scale mark (not shown in the figure), and precise adjustment is achieved through the scale mark.

[0084] In a further embodiment, the locking assembly 340 includes a locking block 341, a top block 342, and a spring three 343 connected between the locking block 341 and the top block 342, and the spring three 343 is preferably a compression spring.

[0085] The locking block 341 and the top block 342 are both radially slidably arranged on the cylinder seat 303, and the locking block 341 is farther away from the axis of the cylinder seat 303 than the top block 342; a one-way tooth 1 314 is arranged at one end (rear end) of the rotating cylinder 310 away from the one-way tooth 2 317, and a one-way tooth 6 344 is arranged on the locking block 341, and the one-way tooth 6 344 can cooperate with the one-way tooth 1 314, and the one-way tooth 6 344 and the one-way tooth 1 314 are configured to prevent the rotating cylinder 310 from reversing after the two cooperate.

[0086] A top ring 363 is axially slidably arranged inside the cylinder seat 303. The top ring 363 is cylindrical and includes a locking segment 3632 and an unlocking segment 3631 that are coaxially connected. The unlocking segment 3631 is located at the rear end. The outer diameter of the unlocking segment 3631 is smaller than the outer diameter of the locking segment 3632. The unlocking segment 3631 and the locking segment 3632 have a smooth transition. The top block 342 is in sliding contact with the outer peripheral wall of the top ring 363. When the top block 342 corresponds to the locking segment 3632, the one-way tooth six 344 is combined with the one-way tooth one 314, and the locking assembly 340 is in a locked state. When the top block 342 corresponds to the unlocking segment 3631, the one-way tooth six 344 is separated from the one-way tooth one 314, and the locking assembly 340 is in an unlocked state.

[0087] Furthermore, a transmission cylinder 320 is inserted inside the cylinder seat 303, the transmission cylinder 320 is located inside the top ring 363 and can rotate relative to the cylinder seat 303, the transmission cylinder 320 is connected with the top ring 363 by spiral transmission, and the transmission cylinder 320 rotates synchronously with the pull cylinder 390. Specifically, a spiral groove 3633 is provided on the inner peripheral wall of the top ring 363, and a convex column (not shown in the figure) is provided on the outer peripheral wall of the transmission cylinder 320, and the convex column is slidably arranged inside the spiral groove 3633; a synchronous arc plate 321 is provided at one end of the transmission cylinder 320 close to the pull cylinder 390, and a circumferential limit hole 394 is provided on one side end surface of the pull cylinder 390 close to the transmission cylinder 320, and the synchronous arc plate 321 is inserted in the circumferential limit hole 394, and can then rotate under the drive of the pull cylinder 390.

[0088] When the pull cord 391 is pulled down to the limit, the angle of rotation of the pull cylinder 390 causes the top ring 363 to move to the top block 342 corresponding to the unlocking section 3631. That is to say, in the process of wearing the device, the pull cord 391 is slightly and repeatedly pulled, and the pull cord 391 drives the pull cylinder 390 to rotate, and the pull cylinder 310 is driven to rotate through the pull cylinder 390. At this time, because the pull cord 391 has not been released to the limit, the top block 342 corresponds to the locking section 3632 of the top ring 363, and the rotating cylinder 310 cannot rotate in the opposite direction. The rotation angle of the rotating cylinder 310 is maintained and locked until the tension of the traction cord 311 reaches the preset value. A slight pull of the pull cord 391 can no longer drive the rotating cylinder 310 to rotate, and the wearing is completed. When it is necessary to take off the device, the pull cord 391 is pulled hard, so that the pull cord 391 is released to the limit, the top block 342 corresponds to the unlocking section 3631 of the top ring 363, and the traction is released by pulling the traction cord 311 downward, and the device can be taken off. By setting the transmission cylinder 320, traction and unloading can be completed using only one pull rope 391, which is convenient to operate.

[0089] In a further embodiment, the cylinder seat 303 has an outer cylinder 3031, and a tensioning cylinder 3032 is provided on one side of the outer cylinder 3031 close to the fixed presser foot 302. An annular chamber is formed between the tensioning cylinder 3032 and the outer cylinder 3031, and the movable presser foot 330 is axially slidably arranged in the annular chamber; a spring 2 333 is connected between the movable presser foot 330 and the annular chamber, and the spring 2 333 makes the movable presser foot 330 tend to extend out of the annular chamber.

[0090] The rear end of the expansion cylinder 3032 (the end close to the fixed presser foot 302) is provided with a plurality of circumferentially evenly distributed elastic petals 3032b, and the inner wall of the elastic petals 3032b is provided with a raised laminate 3032a; a locking column 361 is coaxially slidably inserted inside the expansion cylinder 3032, and a circle of convex strips 3611 is provided at the rear end of the locking column 361 (the end close to the fixed presser foot 302), and when the convex strips 3611 are in contact with the laminate 3032a, the elastic petals 3032b can be expanded outwards to expand the movable presser foot 330, and when the convex strips 3611 are misaligned with the laminate 3032a, the elastic petals 3032b are in a normal state, and the expansion cylinder 3032 releases the expansion of the movable presser foot 330. The locking column 361 is fixedly connected to the top ring 363 to move synchronously with the top ring 363. When the top block 342 corresponds to the unlocking section 3631 of the top ring 363, the convex strip 3611 is separated from the laminate 3032a. At this time, the rotating drum 310 can rotate in the opposite direction to unload the force, and at the same time, the movable presser foot 330 is moved away from the fixed presser foot 302, so that the device can be removed from the door panel 10. By providing the expansion cylinder 3032 and the locking column 361, and connecting the locking column 361 to the top ring 363 at the same time, during the treatment process, the movable presser foot 330 is tightened by the expansion cylinder 3032, so that the position of the movable presser foot 330 is more reliable, and the device is prevented from loosening during the treatment process; after the treatment is completed, the rotating drum 310 unloads the force, and the expansion cylinder 3032 is released to release the tension, so that the device can be removed, which is convenient and quick to use.

[0091] Furthermore, a receiving groove 332 is provided at the front end of the movable presser foot 330 for receiving a second spring 333, and a rubber pressure pad 331 is provided at the rear end of the movable presser foot 330 to avoid damage to the door panel 10 during clamping.

[0092] In a further embodiment, referring to Figure 2 The upper end of the bracket 20 is connected to a slide bar 240, and the lower end of the traction rope 311 is connected to a slide cylinder 230. The slide bar 240 is slidably inserted into the slide cylinder 230. A spring 250 is arranged between the top of the slide bar 240 and the slide cylinder 230. The spring 250 is a tension spring. Through the arrangement of the slide bar 240, the slide cylinder 230 and the spring 250, the traction rope 311 is buffered during the process of gradually increasing the traction force of the traction rope 311, so as to avoid the discomfort of the cervical spine caused by the excessive increase of the traction force of the traction rope 311.

[0093] In order to facilitate the installation of various components, the structure of the cartridge seat 303 is further specifically defined. The cartridge seat 303 includes an outer cartridge 3031 , an expansion cartridge 3032 , a positioning cartridge 3033 and a positioning ring 3034 .

[0094] The outer cylinder 3031 is open at both ends, and a partition is arranged inside the outer cylinder 3031 to divide the outer cylinder 3031 into two chambers along the axial direction. The two chambers are named as the main chamber and the auxiliary chamber respectively. The auxiliary chamber is close to the fixed pressure foot 302, and the expansion cylinder 3032 is coaxially arranged in the auxiliary chamber. The expansion cylinder 3032 and the inner circumferential wall of the auxiliary chamber form a locking chamber.

[0095] The positioning cylinder 3033 is coaxially arranged in the main chamber, the pressure adjusting column 380 is rotatably inserted into the interior of the positioning cylinder 3033, and the tension adjusting ring 370 is sleeved on the outer side of the pressure adjusting column 380 and is slidably connected with the inner circumferential wall of the positioning cylinder 3033; specifically, a first annular groove 3033b and a guide groove 3033a are arranged inside the positioning cylinder 3033, the guide groove 3033a extends axially along the positioning cylinder 3033, an annular protrusion is arranged at the rear end of the pressure adjusting column 380, the annular protrusion is rotatably arranged in the first annular groove 3033b, and a circumferential limit platform 374 is arranged on the outer circumferential wall of the tension adjusting ring 370, and the axial limit platform is slidably arranged in the guide groove 3033a.

[0096] The positioning ring 3034 is coaxially arranged in the main chamber and is located between the positioning tube 3033 and the outer tube 3031. The positioning ring 3034 is provided with an adjustment port 3034a extending radially thereof. There are multiple adjustment ports 3034a. The locking block 341 and the top block 342 are slidably arranged in the adjustment port 3034a. The inner end of the top block 342 is provided with a pressure strip 345. The pressure strip 345 extends out of the adjustment port 3034a and contacts the top ring 363.

[0097] The transmission cylinder 320 is rotatably sleeved on the outside of the positioning cylinder 3033, and the rotating cylinder 310 is sleeved on the outside of the transmission cylinder 320. There is a gap between the inner circumferential wall of the rear end of the rotating cylinder 310 and the transmission cylinder 320. The rear end of the rotating cylinder 310 has a locking ring 312, and the one-way tooth 1 314 is arranged on the inner circumferential wall of the locking ring 312. The locking ring 312 is arranged between the positioning ring 3034 and the outer cylinder 3031, so that the one-way tooth 1 314 is aligned with the locking block 341. The top ring 363 is sleeved on the outside of the transmission cylinder 320, and the rear end is located between the positioning ring 3034 and the outer cylinder 3031. The front end of the positioning cylinder 3033 is located between the rotating cylinder 310 and the transmission cylinder 320; the outer diameter of the middle part of the rotating cylinder 310 is smaller than the outer diameter of the two ends, so that there is a gap between the middle part of the rotating cylinder 310 and the outer cylinder 3031, and the traction rope 311 is wound around the middle part of the rotating cylinder 310. The outer cylinder 3031 is provided with a wire notch to facilitate the retraction and release of the traction rope 311; the pull cylinder 390 is rotatably set in the main chamber and is sleeved on the pressure regulating column 380. The pull cylinder 390 is located on one side of the rotating cylinder, and the pressure sensing ring 350 is located between the pull cylinder 390 and the rotating cylinder 310.

[0098] In combination with the above embodiments, the use principle and working process of the present invention are as follows:

[0099] Reference Figure 4 Before use, first adjust the pressure adjustment column 380 according to the condition of the cervical vertebrae so that the spring four 372 has the initial set tension. When in use, first pull the pull rope 391 downward to the limit position, unlock the locking column 361 and the rotating drum 310, and clamp the adjustment lock 30 on the door panel 10 through the gap between the fixed pressure foot 302 and the movable pressure foot 330. The movable pressure foot 330 presses the door panel 10 under the action of the spring two 333, completing the connection between the adjustment lock 30 and the door panel 10.

[0100] Pull the traction rope 311 downward to a suitable position, put the traction belt on the user's head, loosen the pull rope 391, and the pull rope 391 is reset under the action of the torsion spring 392. The locking column 361 and the rotating drum 310 are locked. The locking column 361 tightens the tensioning cylinder 3032 and the movable presser foot 330, and the position of the movable presser foot 330 is locked. During the treatment, the device will not get loose.

[0101] Afterwards, the pull rope 391 is repeatedly and slightly (make sure not to pull the pull rope 391 to the limit), and when the pull rope 391 is pulled downward, the pull rope 391 drives the pull cylinder 390 to rotate forwardly, and the pull cylinder 390 drives the pressure-sensitive ring 350 to rotate forwardly, and the pressure-sensitive ring 350 drives the rotating cylinder 310 to rotate forwardly by a certain angle, and the traction rope 311 is reeled up to a certain length. When the pull rope 391 is relaxed, the pull cylinder 390 rotates in the opposite direction relative to the pressure-sensitive ring 350 under the action of the torsion spring 392 to reset. The pull rope 391 is pulled repeatedly and the traction rope 311 is continuously wound until the traction force on the traction rope 311 reaches the set value. At this time, the pull cylinder 390 and the pressure-sensitive ring 350 cannot overcome the rotation resistance of the rotating cylinder 310. Due to the action of the spring four 372, the pull cylinder 390 and the pressure-sensitive ring 350 can move away from the rotating cylinder 310, and then the pull cylinder 390 and the pressure-sensitive ring 350 synchronously rotate in the positive direction relative to the rotating cylinder 310. After that, pulling the pull rope 391 will not make the rotating cylinder 310 rotate, and the traction rope 311 will no longer continue to wind up. The device is worn in place and the traction is maintained for a corresponding time to achieve the treatment effect.

[0102] After the treatment is completed, the pull rope 391 is pulled to the limit position, the locking assembly 340 switches the state, the rotating drum 310 and the movable presser foot 330 are unlocked, the rotating drum 310 can rotate in the opposite direction, and the traction rope 311 is pulled downward, and the rotating drum 310 rotates in the opposite direction relative to the pressure-sensitive ring 350, so that the traction force can be released, the traction belt can be removed, and the adjustment lock 30 can be removed from the door panel 10 to complete the disassembly. The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cervical traction frame, characterized in that: It includes an adjustment lock, a bracket and a traction belt. The adjustment lock can be installed on the top of the door panel; the bracket is hoisted at the lower end of the adjustment lock; the traction belt is set on the bracket to fix the patient's head; Adjustment lock includes: A base, the base can be installed on the door panel, and the base includes a cylinder seat; A rotating drum is rotatably arranged inside the drum seat, a traction rope is arranged on the rotating drum, and the lower end of the traction rope passes through the drum seat and is connected to the bracket; The pull cylinder is rotatably arranged on the cylinder seat, a pull rope is arranged on the pull cylinder, and the lower end of the pull rope is naturally suspended. The pull rope is used to pull the pull cylinder to rotate. A torsion spring is arranged between the pull cylinder and the cylinder seat, and the torsion spring is used to reset the pull cylinder; The pull drum is located at the front side of the rotating drum, and a connecting structure is provided between the pull drum and the rotating drum. The connecting structure is configured to make the pull drum drive the rotating drum to rotate forward to reel in the traction rope when the pull drum rotates forward and the pulling force of the traction rope is less than the set pulling force; make the pull drum rotate forward relative to the rotating drum when the pull drum rotates forward and the pulling force of the traction rope is greater than the set pulling force; make the pull drum rotate in the opposite direction relative to the rotating drum when the pull drum is reset; make the rotating drum rotate in the opposite direction relative to the pull drum when the rotating drum is reset; A tension adjustment component is configured to pre-set the pulling force that the traction rope needs to withstand; The locking assembly has a locked state and an unlocked state. When the locking assembly is in the locked state, the drum is prevented from reversing so that the traction rope can be kept reeled in; when the locking assembly is in the unlocked state, the drum is allowed to reverse so that the traction rope can be released; The connection structure includes a pressure-sensitive ring, which is arranged inside the cylinder seat and between the rotating cylinder and the pulling cylinder. The pressure-sensitive ring can move axially relative to the cylinder seat and can rotate circumferentially relative to the cylinder seat. One end of the pressure-sensitive ring close to the rotating cylinder is provided with a one-way tooth four, and one end of the pressure-sensitive ring close to the pulling cylinder is provided with a one-way tooth three; A one-way tooth 2 is arranged on the side of the rotating drum close to the pressure-sensitive ring. The one-way tooth 2 cooperates with the one-way tooth 4. Both the one-way tooth 2 and the one-way tooth 4 are triangular teeth with a stop surface and an inclined surface. In the direction of the positive rotation of the rotating drum, the stop surface of the one-way tooth 2 is located in front of the inclined surface, and the stop surface of the one-way tooth 4 is located behind the inclined surface. A one-way tooth five is arranged on the side of the pull cylinder close to the pressure-sensitive ring, and the one-way tooth five cooperates with the one-way tooth three. Both the one-way tooth five and the one-way tooth three are triangular teeth, and have a stop surface and an inclined surface. In the direction of the pull cylinder's positive rotation, the stop surface of the one-way tooth five is located in front of the inclined surface, and the stop surface of the one-way tooth three is located behind the inclined surface. The one-way tooth five can be retracted and is initially in an extended state. The pull cylinder can move along the axial direction of the cylinder seat, and the tension adjustment component acts on the pull cylinder. The tension adjustment component enables the pull cylinder to have a pre-tightening force that always approaches the pressure-sensitive ring, and the pre-tightening force can be adjusted; The locking assembly includes a locking block, a top block and a spring connected between the locking block and the top block; The locking block and the top block are both radially slidably arranged on the cylinder seat, and the locking block is farther away from the axis of the cylinder seat than the top block; A one-way tooth 1 is arranged at the rear end of the rotating drum, and a one-way tooth 6 is arranged on the locking block. The one-way tooth 6 can cooperate with the one-way tooth 1, and the cooperation between the two can prevent the rotating drum from reversing. A top ring is axially slidably arranged inside the cylinder seat. The top ring is cylindrical and includes a locking section and an unlocking section coaxially connected. The unlocking section is located at the rear end, and the outer diameter of the unlocking section is smaller than the outer diameter of the locking section. The top block is in sliding contact with the outer peripheral wall of the top ring. When the top block corresponds to the locking section, the one-way tooth six is ​​combined with the one-way tooth one, and the locking assembly is in a locked state; when the top block corresponds to the unlocking section, the one-way tooth six is ​​separated from the one-way tooth one, and the locking assembly is in an unlocked state. A transmission cylinder is inserted inside the cylinder seat. The transmission cylinder is located inside the top ring and can rotate relative to the cylinder seat. The transmission cylinder is connected to the top ring through a spiral transmission. The transmission cylinder rotates synchronously with the pull cylinder. When the pull rope is pulled down to the limit, the pull cylinder rotates at an angle that causes the top ring to move to the top block corresponding to the unlocking section.

2. A cervical traction frame according to claim 1, characterized in that: The tension adjustment assembly includes a tension adjustment ring and a pressure adjustment column; The pressure regulating column is coaxially rotatably inserted into the cylinder seat, the pressure regulating column is located inside the rotating cylinder and the pulling cylinder and one end of the pressure regulating column extends out of the pulling cylinder, and a handle is provided at the end of the pressure regulating column extending out of the pulling cylinder to facilitate the rotation of the pressure regulating column; The tension adjustment ring is coaxially arranged on the cylinder seat and sleeved on the outside of the pressure adjustment column. The tension adjustment ring is threadedly connected to the pressure adjustment column and is axially slidably connected to the cylinder seat. A spring four is connected between the tension adjustment ring and the pull cylinder, and the spring four makes the pull cylinder tend to approach the pressure-sensitive ring.

3. A cervical traction frame according to claim 1, characterized in that: A synchronous arc plate is arranged at one end of the transmission cylinder close to the pull cylinder, a circumferential limit hole is arranged at one end surface of the pull cylinder close to the transmission cylinder, and the synchronous arc plate is inserted in the circumferential limit hole.

4. The cervical traction frame according to claim 1, characterized in that: The inner peripheral wall of the top ring is provided with a spiral groove, the outer peripheral wall of the transmission cylinder is provided with a convex column, and the convex column is slidably arranged inside the spiral groove.

5. The cervical traction frame according to claim 1, characterized in that: The base also includes a steel section and a fixed presser foot. The cylinder seat and the fixed presser foot are both fixedly arranged at the bottom of the steel section. The cylinder seat and the fixed presser foot are arranged at intervals and the cylinder seat is located in front of the fixed presser foot. A movable presser foot is inserted at one end of the cylinder seat close to the fixed presser foot. The movable presser foot can slide elastically axially relative to the cylinder seat and initially tends to approach the fixed presser foot.

6. A cervical traction frame according to claim 5, characterized in that: The cylinder seat has an outer cylinder, and a tensioning cylinder is provided on one side of the outer cylinder near the fixed presser foot. An annular chamber is formed between the tensioning cylinder and the outer cylinder, and the movable presser foot is axially slidably arranged in the annular chamber; a second spring is connected between the movable presser foot and the annular chamber; The rear end of the expansion cylinder is provided with a plurality of circumferentially evenly distributed elastic petals, and the inner wall of the elastic petals is provided with a raised laminate; a locking column is coaxially slidably inserted inside the expansion cylinder, and a convex strip is provided at the rear end of the locking column. When the convex strip contacts the laminate, the elastic petals can expand outwards and thereby tighten the movable presser foot. When the convex strip is misaligned with the laminate, the elastic petals are in a normal state, and the expansion cylinder releases the tension on the movable presser foot; the locking column is fixedly connected to the top ring, and when the top block corresponds to the unlocking section of the top ring, the convex strip is separated from the laminate.

7. The cervical traction frame according to claim 1, characterized in that: The upper end of the bracket is connected with a slide rod, the lower end of the traction rope is connected with a slide cylinder, the slide rod is slidably inserted in the slide cylinder, and a spring is arranged between the top of the slide rod and the slide cylinder.

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