CN210843692U

CN210843692U - Cervical vertebra tractor

Info

Publication number: CN210843692U
Application number: CN201921497704.9U
Authority: CN
Inventors: 石幸乐
Original assignee: Henan Meizhikang Health Industry Co ltd
Current assignee: Henan Meizhikang Health Industry Co ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-06-26
Anticipated expiration: 2029-09-10

Abstract

The utility model provides a cervical vertebra tractor, which relates to the technical field of medical health care instruments and solves the technical problem that the length adjustment of a cervical vertebra tractor neck sleeve is inconvenient due to the adoption of a traditional connecting piece in the prior art, and comprises a front neck upper bracket, a front neck lower bracket and a back neck bracket, wherein the front neck upper bracket is arranged at the upper side of the front neck lower bracket, two sides of the back neck bracket are respectively connected with two sides of the front neck lower bracket through a left neck belt and a right neck belt, and the front neck lower bracket, the left neck belt, the back neck bracket and the right neck belt form a lantern ring worn on the neck of a human body; the back neck bracket is provided with a length adjusting device, the left neck band and the right neck band are in transmission connection with the length adjusting device, and the length adjusting device can adjust and lock the relative positions of the left neck band and the right neck band so as to adjust the length of the lantern ring; the utility model discloses not only accommodation process convenient and fast, the difficult pine of use takes off moreover.

Description

Cervical vertebra tractor

Technical Field

The utility model relates to the technical field of medical care instruments, in particular to a cervical vertebra tractor.

Background

The cervical vertebra tractor is a medical apparatus for preventing and treating various cervical spondylosis and compression symptoms caused by the cervical spondylosis, is worn on the neck of a user when in use, and enables the cervical vertebra curve to be recovered and kept at a normal physiological curve position by adjusting the height of the cervical vertebra tractor; however, when the existing cervical vertebra tractor is worn, the length of the neck sleeve is adjusted by adopting the magic tape, the hanging buckle and other modes, the length adjusting process is inconvenient, and the cervical vertebra tractor is easy to loosen when being used.

Chinese patent document discloses a cervical vertebra tractor, and this cervical vertebra tractor includes that shoulder holds in the palm and the cheek holds in the palm, is located to be connected with the cheek between shoulder holds in the palm and the cheek holds in the palm and holds in the palm elevating system, the shoulder hold in the palm with the back portion that the cheek held in the palm all is provided with the opening, the opening part is provided with the connecting piece, the connecting piece is velcro, and this cervical vertebra tractor adjusts through velcro when using the length of neck ring that the shoulder held in the palm with the cheek held in the palm encloses, holds in the palm elevating system through the cheek and adjusts the cheek and hold in the palm the height.

The applicant has found out for the prior art that at least the following technical problems exist:

1. when the cervical vertebra retractor is worn, the neck ring is adjusted to the proper length through the nylon fastener, and the adjusting process is inconvenient.

2. When the cervical vertebra tractor is used, the shoulder support and the cheek support which are connected through the nylon hasp are easy to loosen, and inconvenience is brought to use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cervical vertebra tractor to solve the technical problem that the length adjustment of the cervical vertebra tractor neck sleeve is inconvenient due to the adoption of the traditional connecting piece in the prior art; the utility model provides a plurality of technical effects that preferred technical scheme among a plurality of technical scheme can produce (the slip end of left neck area and right neck area sets up in spacing passageway, can restrict the slip of left neck area and right neck area during length adjustment, the meshing tooth of left neck area and the meshing tooth of right neck area set up relatively, cooperation drive gear makes the slip end of left neck area and right neck area can synchronous reverse motion, drive gear includes gear portion and ratchet portion, can drive left neck area and right neck area slip on the one hand, on the other hand can prevent left neck area and right neck area pine and take off when wearing, the internal gear is one-way internal gear, ratchet portion includes elasticity pawl and main part wheel, mutually support, only when the reverse rotation length adjust knob, left neck area and right neck area just can reverse motion, on the basis of having guaranteed to prevent taking off and taking off, two-way regulation can be realized, elevating gear can drive the lift of upper bracket of front neck in order to play the effect of traction, lifting strip and lift and transfer and adjust the length The knob has the function of locking the relative position on the basis of realizing lifting; the left neck strap or the right neck strap can be conveniently opened or closed through the connecting buckle and the connecting hole; the arrangement of the first pad, the second pad and the third pad is more comfortable to use; the first gasket, the second gasket and the third gasket are provided with adsorption parts, so that the assembly and disassembly are more convenient; see below for details.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a pair of cervical vertebra tractor, including foreneck upper bracket, foreneck lower bracket and nape bracket, wherein: the upper front neck bracket is arranged on the upper side of the lower front neck bracket, a left neck band and a right neck band are respectively connected to two sides of the lower front neck bracket, two sides of the rear neck bracket are respectively connected with two sides of the lower front neck bracket through the left neck band and the right neck band, and the lower front neck bracket, the left neck band, the rear neck bracket and the right neck band enclose a lantern ring worn on the neck of a human body; the back neck bracket is provided with a length adjusting device, the left neck band and the right neck band are connected with the length adjusting device in a transmission mode, and the length adjusting device can adjust and lock the relative positions of the left neck band and the right neck band so as to adjust the length of the lantern ring.

Preferably, the back neck bracket is provided with a limit channel, and the sliding ends of the left neck band and the right neck band are both arranged in the limit channel and can slide along the limit channel; the output end of the length adjusting device is arranged in the limiting channel and is in transmission connection with the left neck strap and the right neck strap.

Preferably, the left neck strap and the right neck strap are both provided with a long hole, one of two inner long edges of the long hole is uniformly provided with meshing teeth, and the meshing teeth on the left neck strap are opposite to the meshing teeth on the right neck strap; the length adjusting device comprises a length adjusting knob and a transmission gear, the output end of the length adjusting knob is connected with the transmission gear and can be synchronously rotated with the transmission gear, the transmission gear is arranged between the meshing teeth on the left neck band and the meshing teeth on the right neck band and is meshed with the meshing teeth on the left neck band and the meshing teeth on the right neck band simultaneously.

Preferably, be provided with the internal gear on the inner wall of spacing passageway, drive gear sets up the inside of internal gear, drive gear is provided with gear portion and ratchet portion including the level, gear portion with left side neck area with right side neck area transmission links to each other, ratchet portion can with the internal gear offsets.

Preferably, the inner gear is a one-way inner gear, the ratchet wheel part comprises a main body wheel and an elastic pawl connected with the main body wheel, a limiting hole is formed in the elastic pawl, and a sliding block is arranged at the output end of the length adjusting knob and arranged in the limiting hole; the length adjusting knob is rotated forwards, and the sliding block is separated from the limiting hole and abuts against the main body wheel so that the transmission gear rotates forwards; and the length adjusting knob is rotated reversely, and the sliding block slides along the limiting hole and pushes the elastic pawl to deform so that the transmission gear rotates reversely.

Preferably, both sides of the lower end of the front neck upper bracket are provided with lifting devices, both sides of the lower end of the front neck upper bracket are respectively connected with both sides of the upper end of the front neck lower bracket through corresponding lifting devices, and the lifting devices can drive the front neck upper bracket to lift relative to the front neck lower bracket.

Preferably, the lifting device comprises a lifting bar and a lifting adjusting knob, wherein: the lifting strip is arranged at the lower end position corresponding to one side of the front neck upper bracket, and through grooves are uniformly arranged on the lifting strip along the vertical direction; the front neck lower bracket is provided with a mounting hole, the output end of the lifting adjusting knob penetrates through the mounting hole, two upright parts are arranged on the end face of the output end of the lifting adjusting knob and are arranged in two adjacent through grooves, and the lifting adjusting knob is rotated to enable the two upright parts to rotate along the central line of the mounting hole so as to drive the lifting strip to lift.

Preferably, the connecting end of the left or right neck strap is provided with a connecting hole, one side of the front neck lower bracket is provided with a connecting buckle, and the connecting buckle can pass through the connecting hole, so that the left or right neck strap can be detachably connected with the front neck lower bracket; the connector link with connecting hole size fit, the rotatable setting of connector link is in on the front neck lower carriage, it is rotatory the connector link is in order to avoid left nape area or right nape area with the front neck lower carriage breaks away from mutually.

Preferably, the cervical spine retractor further comprises a first spacer, a second spacer and a third spacer, wherein: the first, second and third shims are disposed on inner surfaces of the upper front neck bracket, the lower front neck bracket and the rear neck bracket, respectively.

Preferably, the first gasket, the second gasket and the third gasket are all provided with an adsorption part; the first gasket, the second gasket and the third gasket are detachably connected with the front neck upper bracket, the front neck lower bracket and the back neck bracket respectively through corresponding adsorption parts.

The utility model provides a pair of cervical vertebra tractor has following beneficial effect at least:

the cervical vertebra traction frame comprises a front neck upper bracket, a front neck lower bracket and a back neck bracket, when the cervical vertebra traction frame is worn, the front neck upper bracket is positioned at the lower side of the front cheek of the neck of a user, the front neck lower bracket is positioned between the front neck upper bracket and the shoulder of a human body, and the back neck bracket is positioned at the back of the neck of the human body; the left neck band and the right neck band are connected to two sides of the front neck lower bracket, two sides of the back neck bracket are connected with two sides of the front neck lower bracket through the left neck band and the right neck band respectively, the front neck lower bracket, the left neck band, the back neck bracket and the right neck are encircled to form a lantern ring for being worn by a human body, and when the neck band is used, the neck band is worn at the position of the neck of a user through the lantern ring, so that the neck band is worn firmly; the back neck bracket is provided with a length adjusting device, the left neck band and the right neck band are in transmission connection with the length adjusting device, the length adjusting device can adjust and lock the relative positions of the left neck band and the right neck band to adjust the length of the lantern ring, the length of the lantern ring suitable for being worn by a user can be adjusted correspondingly according to different conditions of different users through the length adjusting device, the length adjusting process is convenient and rapid, and the relative positions can be locked and are not easy to loosen; the utility model discloses, can adjust the relative position in left neck area and right neck area through length adjustment device, and then adjust the relative length in neck area, not only accommodation process convenient and fast, the difficult pine of use takes off moreover.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of another perspective structure of the bracket of the present invention;

FIG. 3 is a schematic view of a partial structure of the inner side of the nape bracket of the present invention;

FIG. 4 is a schematic view of the connection structure of the left and right neck straps and the transmission gear of the present invention;

FIG. 5 is a schematic view of the length adjusting knob, the internal gear and the transmission gear of the present invention;

fig. 6 is a schematic structural view of the lifting device of the present invention;

FIG. 7 is a schematic view of the lifting adjusting knob of the present invention;

FIG. 8 is a schematic view of the structure of the connecting buckle and the connecting hole of the present invention;

fig. 9 is a schematic diagram of the position structure of the gasket of the present invention.

Reference numerals

1-upper front neck bracket; 11-a first gasket; 2-a lifting device; 21-lifting bar; 211-through trenches; 22-lifting adjusting knob; 221-a pillar portion; 222-a turntable section; 3-lower front neck bracket; 31-a second gasket; 32-connecting buckles; 33-mounting holes; 34-convex strips; 4-the nape-of-arm carrier; 41-a third gasket; 42-a limit channel; 421-a first opening; 422-a second opening; 43-internal gear; 5-left nape-belt; 51-connection hole; 6-length adjustment means; 61-length adjustment knob; 611-a slide block; 62-a drive gear; 621-gear portion; 622-ratchet portion; 6221-a body wheel; 6222-resilient detents; 7-right neck band.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The utility model provides a cervical vertebra tractor, like fig. 1 the utility model discloses the structure schematic diagram and fig. 2 the utility model discloses another visual angle structure schematic diagram of bracket is shown, cervical vertebra tractor includes bracket 1, front neck lower carriage 3 and nape bracket 4 on the front neck, wherein: the upper foreneck bracket 1 is arranged on the upper side of the lower foreneck bracket 3, the two sides of the lower foreneck bracket 3 are respectively connected with a left neck band 5 and a right neck band 7, the two sides of the rear neck bracket 4 are respectively connected with the two sides of the lower foreneck bracket 3 through the left neck band 5 and the right neck band 7, the lower foreneck bracket 3, the left neck band 5, the rear neck bracket 4 and the right neck band 7 enclose a lantern ring for being worn on the neck of a human body, and the upper foreneck bracket 1, the lower foreneck bracket 3, the left neck band 5, the rear neck bracket 4 and the right neck band 7 enclose a space for being worn on the neck of the human body; the back neck bracket 4 is provided with a length adjusting device 6, the left neck belt 5 and the right neck belt 7 are in transmission connection with the length adjusting device 6, and the length adjusting device 6 can adjust and lock the relative positions of the left neck belt 5 and the right neck belt 7 so as to adjust the length of the lantern ring.

When a user wears the cervical vertebra retractor, the relative positions of the left cervical belt 5 and the right cervical belt 7 are adjusted and locked through the length adjusting device 6, the length of the lantern ring is further adjusted, therefore, a proper wearing space is selected, and the cervical vertebra retractor can be used for traction after the cervical vertebra retractor is worn; the utility model discloses, through the regulation of length adjustment device 6 left neck area 5 and right neck area 7 relative position not only be convenient for, accommodation process convenient and fast moreover, relative position can lock simultaneously, is difficult for the pine to take off, wears firmly.

As an alternative embodiment, as shown in the schematic partial structure diagram of the inner side of the back neck bracket of the utility model in figure 3; the back neck bracket 4 is provided with a limiting channel 42, the sliding ends of the left neck belt 5 and the right neck belt 7 are both arranged in the limiting channel 42 and can slide along the limiting channel 42, the two ends of the limiting channel 42 are respectively provided with a first opening 421 and a second opening 422, the sliding end of the left neck belt 5 is inserted into the limiting channel 42 from the first opening 421 and can slide out from the second opening 422, and the sliding end of the right neck belt 7 is inserted into the limiting channel 42 from the second opening 422 and can slide out from the first opening 421; the output end of the length adjusting device 6 is arranged in the limiting channel 42 and is connected with the left neck strap 5 and the right neck strap 7 in a transmission way; preferably, the position-limiting channel 42 is provided at a central position of the rear side of the nape-bracket 4, and the length-adjusting device 7 is provided at a central position of the position-limiting channel 42.

As shown in fig. 1, 2 and 3, the limiting channel 42 is arranged on the outer side of the back neck bracket 4, and a cover plate is detachably arranged on the back neck bracket 4 corresponding to the limiting channel 42, so that the length adjusting device 6 can be conveniently installed.

As an optional implementation manner, as shown in fig. 4, the schematic view of the connection structure of the left neck strap, the right neck strap and the transmission gear of the present invention shows, the left neck strap 5 and the right neck strap 7 are both provided with a long hole, one of the two inner long edges of the long hole is uniformly provided with a meshing tooth, and the meshing tooth on the left neck strap 5 is arranged opposite to the meshing tooth on the right neck strap 7; the length adjusting device 6 comprises a length adjusting knob 61 and a transmission gear 62, a fixing hole is formed in the back neck bracket 1 and communicated with the limiting channel 42, the output end of the length adjusting knob 61 penetrates through the fixing hole to be connected with the transmission gear 62 and can synchronously rotate with the transmission gear 62, and the transmission gear 62 is arranged between the meshing teeth on the left neck strap 5 and the meshing teeth on the right neck strap 7 and is meshed with the meshing teeth on the left neck strap 5 and the meshing teeth on the right neck strap 7 simultaneously; when the length adjusting knob 61 is rotated, the transmission gear 62 rotates synchronously along with the length adjusting knob 61, and the left neck strap 5 and the right neck strap 7 synchronously move reversely along the limiting channel 42.

The length adjustment device 6 further comprises a pressing sheet which presses the left neck strap 5, the right neck strap 7 and the transmission gear 62, the left neck strap 5 and the right neck strap 7 slide between the pressing sheet and the back neck bracket 4, and the pressing sheet is arranged to further enable the left neck strap 5 and the right neck strap 7 to slide more stably.

As an optional implementation manner, as shown in fig. 3, 4 and 5, the length adjustment knob, the internal gear and the transmission gear of the present invention are shown in the schematic diagram of the conventional matching structure, an internal gear 43 is disposed on the inner wall of the limiting channel 42, a transmission gear 62 is disposed inside the internal gear 43, the transmission gear 62 includes a gear portion 621 and a ratchet portion 622 which are disposed in a hierarchical manner, the gear portion 621 is in transmission connection with the left neck strap 5 and the right neck strap 7, the gear portion 621 is simultaneously meshed with the meshing teeth on the left neck strap 5 and the meshing teeth on the right neck strap 6, and the ratchet portion 622 can be abutted against the internal gear 43.

As an alternative embodiment, the internal gear 43 is provided as a one-way internal gear, the ratchet part 622 includes a main body wheel 6221 and an elastic pawl 6222 connected with the main body wheel 6221, a limit hole is opened on the elastic pawl 6222, a slide block 611 is provided on the output end of the length adjusting knob 61, and the slide block 611 is provided in the limit hole; preferably, as shown in fig. 5, the number of the elastic pawls 6222 is two, two elastic pawls 6222 are symmetrically disposed on two sides of the main body wheel 6221, the number of the sliding blocks 611 is four, and the four sliding blocks 611 are circumferentially distributed, two sliding grooves are disposed on the main body wheel 6221, two sliding blocks 611 are respectively disposed in the limiting holes of the two elastic pawls 6222, and the other two sliding blocks 611 are respectively disposed in the two sliding grooves.

As shown in fig. 5, when the length adjusting knob 61 is rotated in the forward direction, the sliding block 611 is separated from the limiting hole and abuts against the main body wheel 6221 so as to rotate the transmission gear 62 in the forward direction, and at this time, if the left neck strap 5 and the right neck strap 7 are pulled, the claw head of the elastic pawl 6222 abuts against and is locked with the teeth of the unidirectional inner gear, so that the left neck strap 5 and the right neck strap 7 can be effectively prevented from loosening in the wearing process.

As shown in fig. 5, the length adjustment knob 61 is rotated in the reverse direction, the sliding block 611 slides along the limiting hole and pushes the elastic pawl 6222 to deform so as to rotate the transmission gear 62 in the reverse direction; when the sliding block 611 continuously rotates clockwise in the limiting hole, the sliding block 611 presses the elastic pawl 6222, one side of the claw head of the elastic pawl 6222 inclines towards the direction close to the main body wheel 6221, at the moment, the claw head of the elastic pawl 6222 is separated from the teeth of the unidirectional internal gear, and the transmission gear 62 rotates reversely under the driving of the length adjusting knob 61.

As an alternative embodiment, as shown in fig. 1, both sides of the lower end of the front neck upper bracket 1 are provided with a lifting device 2, both sides of the lower end of the front neck upper bracket 1 are respectively connected with both sides of the upper end of the front neck lower bracket 3 through corresponding lifting devices 2, the lifting device 2 can drive the front neck upper bracket 1 to lift relative to the front neck lower bracket 3, and the lifting device 2 is provided as a rack and pinion mechanism or a lead screw nut mechanism.

As an optional implementation manner, as shown in fig. 6, the structure diagram of the lifting device of the present invention and fig. 7, the structure diagram of the length adjusting knob of the present invention shows that the lifting device 2 includes a lifting bar 21 and a lifting adjusting knob 22, wherein: the lifting bar 21 is arranged at the lower end position corresponding to one side of the front neck upper bracket 1, and the lifting bar 21 is uniformly provided with through grooves 211 along the vertical direction; the lower front neck bracket 3 is provided with a mounting hole 33, the output end of the lifting adjusting knob 22 passes through the mounting hole 33, the end surface of the output end of the lifting adjusting knob 22 is provided with two upright parts 221, the two upright parts 221 are arranged in the two adjacent through grooves 211, and the lifting adjusting knob 22 is rotated to enable the two upright parts 221 to rotate along the central line of the mounting hole 33 so as to drive the lifting bar 21 to lift; the two upright parts 221 and the plurality of through grooves 211 are mutually matched, so that the lifting of the lifting bar 21 is realized, the relative position locking effect is realized, the structure is simple, and the transmission effect is obvious.

As shown in fig. 6, the lifting bar 21 is provided with a limiting groove along the vertical direction, a protruding strip 34 is provided on the front neck lower bracket 3 along the vertical direction, the shape of the protruding strip 34 is matched with the shape of the limiting groove, the protruding strip 34 is provided in the limiting groove, and the limiting groove slides relative to the protruding strip 34 when the lifting bar 21 is lifted;

as shown in fig. 7, the top of the two upright posts 221 is provided with a turntable 222, the lifting device 2 further comprises a housing, the housing is detachably covered on the front neck lower bracket 3 through a mounting post, the lifting bar 21 is arranged in the housing, the housing is provided with an opening, and the turntable 222 is arranged in the opening and can rotate relative to the opening, so that the rotation process of the length adjusting knob 22 is more stable.

As an optional implementation manner, as shown in fig. 8, the structural schematic diagram of the connection buckle and the connection hole of the present invention shows, the connection end of the left neck strap 5 or the right neck strap 7 is provided with the connection hole 51, one side of the front neck lower bracket 3 is provided with the connection buckle 32, and the connection buckle 32 can pass through the connection hole 51, so that the left neck strap 5 or the right neck strap 7 can be detachably connected with the front neck lower bracket 3; connecting link 32 with connecting hole 51 size fit, connecting hole 51 and connecting link 32 all set up to the ellipse, and connecting link 32 is rotatable to be set up on front neck lower carriage 3, and swivelling joint detains 32 in order to avoid left nape area 5 or right nape area 7 to break away from mutually with front neck lower carriage 3.

As an alternative embodiment, as shown in fig. 9, the schematic gasket position of the present invention, the cervical vertebra retractor further comprises a first gasket 11, a second gasket 31 and a third gasket 41, wherein: first, second and

third gaskets

11, 31 and 41 are provided on the inner surfaces of the front neck upper bracket 1, the front neck lower bracket 3 and the back neck bracket 4, respectively; the arrangement of the gasket makes the wearing of the cervical vertebra tractor more comfortable.

As an alternative embodiment, as shown in fig. 9, the first pad 11, the second pad 31, and the third pad 41 are each provided with an adsorption portion; the first gasket 11, the second gasket 31 and the third gasket 41 are detachably connected with the front neck upper bracket 1, the front neck lower bracket 3 and the back neck bracket 4 respectively through corresponding adsorption parts; the absorption portion sets up to circular paster, one side of circular paster sets up to the magic subsides, adsorbs with the gasket and links to each other, the opposite side of circular paster sets up to the sticker and bonds with the bracket and links to each other, all is provided with a plurality of circular pasters on first gasket 11, second gasket 31 and the third gasket 41.

The working process is as follows:

before use, the height adjusting knob 22 is rotated, and the lifting bar 21 drives the front neck upper bracket 1 to descend to the lowest point; turning the length adjustment knob 61 to slide the left and

right neck straps

5, 7 relative to the spacing channel 42, thereby increasing the length of the collar; the left or

right neck strap

5 or 7 is opened by rotating the connection button 32 and separating the connection button 32 from the connection hole 51.

When in use, the left neck strap 5 or the right neck strap 7 is wound around the neck of a user, the connecting buckle 32 passes through the connecting buckle 51, and the connecting buckle 32 is rotated to complete the connection of the left neck strap 5 or the right neck strap 7; and then, rotating the length adjusting knob 61, after the lantern ring is contracted to a proper length, simultaneously rotating the two height adjusting knobs 22 by the left hand and the right hand to enable the two lifting strips 21 to drive the foreneck upper bracket 1 to move upwards to enter a supporting state, and keeping the traction state for 10-30 min according to different requirements of users.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A cervical vertebra retractor, comprising a front neck upper bracket (1), a front neck lower bracket (3) and a back neck bracket (4), wherein:

the upper front neck bracket (1) is arranged on the upper side of the lower front neck bracket (3), a left neck band (5) and a right neck band (7) are respectively connected to two sides of the lower front neck bracket (3), two sides of the rear neck bracket (4) are respectively connected with two sides of the lower front neck bracket (3) through the left neck band (5) and the right neck band (7), and the lower front neck bracket (3), the left neck band (5), the rear neck bracket (4) and the right neck band (7) enclose a lantern ring worn on the neck of a human body;

be provided with length adjustment device (6) on back neck bracket (4), left side neck area (5) with right side neck area (7) all with length adjustment device (6) transmission links to each other, length adjustment device (6) can be adjusted and lock left side neck area (5) with the relative position of right side neck area (7) is in order to adjust the length of the lantern ring.

2. The cervical spine retractor according to claim 1 wherein the back neck bracket (4) is provided with a limit channel (42), the sliding ends of the left and right neck straps (5, 7) are both arranged in the limit channel (42) and can slide along the limit channel (42); the output end of the length adjusting device (6) is arranged in the limiting channel (42) and is in transmission connection with the left neck strap (5) and the right neck strap (7).

3. The cervical spine retractor according to claim 2 wherein the left cervical belt (5) and the right cervical belt (7) are provided with elongated holes, one of the two inner long sides of the elongated holes is provided with meshing teeth uniformly, the meshing teeth on the left cervical belt (5) are opposite to the meshing teeth on the right cervical belt (7);

length adjustment device (6) include length adjustment knob (61) and drive gear (62), the output of length adjustment knob (61) with drive gear (62) link to each other and can with drive gear (62) synchronous revolution, drive gear (62) set up meshing tooth on left nape area (5) with between the meshing tooth on right nape area (7), and simultaneously with meshing tooth on the left nape area (5) with meshing tooth on the right nape area (7) meshes mutually.

4. The cervical vertebra retractor according to claim 3, wherein an inner gear (43) is provided on an inner wall of the limit passage (42), the transmission gear (62) is provided inside the inner gear (43), the transmission gear (62) comprises a gear portion (621) and a ratchet portion (622) which are provided in a hierarchical manner, the gear portion (621) is in transmission connection with the left neck strap (5) and the right neck strap (7), and the ratchet portion (622) can abut against the inner gear (43).

5. The cervical vertebra retractor according to claim 4, wherein said internal gear (43) is configured as a one-way internal gear, said ratchet portion (622) comprises a main body wheel (6221) and an elastic pawl (6222) connected to said main body wheel (6221), said elastic pawl (6222) is opened with a limit hole, said length adjusting knob (61) is provided with a slide block (611) at its output end, said slide block (611) is disposed in said limit hole;

the length adjusting knob (61) is rotated forwards, and the sliding block (611) is separated from the limiting hole and abuts against the main body wheel (6221) so that the transmission gear (62) rotates forwards;

and the length adjusting knob (61) is rotated reversely, the sliding block (611) slides along the limiting hole and pushes the elastic pawl (6222) to deform so as to enable the transmission gear (62) to rotate reversely.

6. The cervical vertebra retractor according to claim 1, wherein both sides of the lower end of the upper front neck bracket (1) are provided with a lifting device (2), both sides of the lower end of the upper front neck bracket (1) are respectively connected with both sides of the upper end of the lower front neck bracket (3) through corresponding lifting devices (2), and the lifting device (2) can drive the upper front neck bracket (1) to lift relative to the lower front neck bracket (3).

7. The cervical spine retractor according to claim 6 wherein the lifting device (2) comprises a lifting bar (21) and a lifting adjusting knob (22), wherein:

the lifting bar (21) is arranged at the lower end position corresponding to one side of the front neck upper bracket (1), and through grooves (211) are uniformly arranged on the lifting bar (21) along the vertical direction; be provided with mounting hole (33) on foreneck lower bracket (3), the output of lift adjustment knob (22) passes mounting hole (33), be provided with two upright portions (221), two on the terminal surface of lift adjustment knob (22) output stand portion (221) sets up adjacent two link up in slot (211), rotate lift adjustment knob (22) makes two stand portion (221) are followed the central line of mounting hole (33) rotates in order to drive lift strip (21) go up and down.

8. The cervical spine retractor according to claim 1 wherein the connecting end of the left or right neckband (5, 7) is provided with a connecting hole (51), one side of the front cervical lower bracket (3) is provided with a connecting buckle (32), the connecting buckle (32) can pass through the connecting hole (51) to detachably connect the left or right neckband (5, 7) with the front cervical lower bracket (3);

connector link (32) with connecting hole (51) size fit, connector link (32) rotatable setting is in on front neck lower carriage (3), it is rotatory connector link (32) are in order to avoid left nape area (5) or right nape area (7) with front neck lower carriage (3) break away from mutually.

9. The cervical spine retractor according to claim 1 further comprising a first spacer (11), a second spacer (31) and a third spacer (41), wherein:

the first gasket (11), the second gasket (31), and the third gasket (41) are respectively provided on inner surfaces of the front neck upper bracket (1), the front neck lower bracket (3), and the back neck bracket (4).

10. The cervical spine retractor according to claim 9 wherein the first pad (11), the second pad (31) and the third pad (41) are provided with a suction part;

the first gasket (11), the second gasket (31) and the third gasket (41) are detachably connected with the foreneck upper bracket (1), the foreneck lower bracket (3) and the nape bracket (4) respectively through corresponding adsorption parts.