CN110179507B - Cervical vertebra stretching device - Google Patents
Cervical vertebra stretching device Download PDFInfo
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- CN110179507B CN110179507B CN201910363632.7A CN201910363632A CN110179507B CN 110179507 B CN110179507 B CN 110179507B CN 201910363632 A CN201910363632 A CN 201910363632A CN 110179507 B CN110179507 B CN 110179507B
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- 230000033001 locomotion Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
- A61B2017/0256—Joint distractors for the spine
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Abstract
The application provides a cervical vertebra stretching device, which belongs to the technical field of orthopaedics correction and comprises a supporting guide rail, a first adjusting unit, a first stretching piece, a first supporting piece and a second stretching piece, wherein the first adjusting unit is connected with the supporting guide rail, the first stretching piece is connected with the first adjusting unit, the first supporting piece is fixedly connected with the first adjusting unit, the second stretching piece is connected with the first supporting piece, and the second stretching piece and the first stretching piece are arranged side by side in the direction parallel to the supporting guide rail. The application reduces the possibility of the phenomenon of cutting the vertebral body by the screw, thereby improving the success rate of the cervical vertebra correction operation.
Description
Technical Field
The application belongs to the technical field of orthopaedics correction, and particularly relates to a cervical vertebra opening device.
Background
The cervical vertebra spreader is a common appliance in operation, and plays a role in spreading cervical vertebra bodies during orthopedic correction operation.
The existing cervical vertebra spreader comprises racks, position adjusting units and sleeves, wherein the position adjusting units (comprising adjusting blocks, gear sets, stop pieces and spreading arms) are two groups, the two groups of position adjusting units are connected with the racks so as to relatively move (mutually approach or mutually separate) along the directions of the racks, the sleeves are two, and the two sleeves are connected with the two groups of position adjusting units in a one-to-one correspondence manner. When the cervical vertebra is required to be distracted, the screws on the cervical vertebra are sleeved by the sleeve, and then the movable sleeve drives the cervical vertebra to move, so that the cervical vertebra is distracted.
However, in the process of implementing the technical scheme of the embodiment of the application, the inventor discovers that the above technology has at least the following technical problems:
the existing cervical vertebra spreader is easy to cut the vertebral body due to the fact that the pressure to be overcome is large in the process of spreading the vertebral body, and therefore surgical risks are increased.
Disclosure of Invention
The embodiment of the application solves the technical problem that the phenomenon of cutting the vertebral body by the screw is easy to occur in the prior art by providing the cervical vertebra stretching device, reduces the possibility of the phenomenon of cutting the vertebral body by the screw, and further improves the success rate of cervical vertebra correction operation.
The embodiment of the application provides a cervical vertebra stretching device, which comprises:
a support rail;
the first adjusting unit is connected with the support guide rail;
a first spreader connected to the first adjustment unit;
the first supporting piece is fixedly connected with the first adjusting unit; a kind of electronic device with high-pressure air-conditioning system
And the second supporting piece is connected with the first supporting piece, and is arranged side by side with the first supporting piece in the direction parallel to the supporting guide rail.
One or more technical schemes provided by the application have at least the following technical effects or advantages:
according to the cervical vertebra expanding device, the first expanding piece, the first supporting piece and the second expanding piece are arranged, so that in the process of expanding the cervical vertebra cone, two screws on one side of an affected part can be connected at the same time, and the two cones on one side of the affected part are expanded at the same time, and therefore compared with the prior art, the expanding force born by the original cone is applied to the two cones, the pressure required to be overcome by the expanding device is reduced, the technical problem that the phenomenon of cutting the cone by the screws easily occurs in the prior art is solved, the possibility of the phenomenon of cutting the cone by the screws is further reduced, and the success rate of cervical vertebra correcting operation is further improved.
Drawings
FIG. 1 is a schematic view of the cervical vertebra distraction device of the present application in one embodiment;
FIG. 2 is a schematic view of the cervical vertebra distracting device of FIG. 1 in another view;
FIG. 3 is a schematic view of the support rail of FIG. 1;
FIG. 4 is a schematic view showing the structure of the cervical vertebra distracting device of the present application in another embodiment;
FIG. 5 is a schematic view of the cervical vertebra distraction device of FIG. 4 after a distraction motion;
in the above figures: 10. a support rail; 20. a first adjusting unit; 21. a first slider; 22. a first gear set; 23. a first stop piece; 24. a first support arm; 30. a first spreader; 31. a sleeve portion; 32. a connection part; 40. a first support; 50. a second spreader; 60. a first moving member; 70. a second adjusting unit; 71. a second slider; 72. a second gear set; 73. a second stop piece; 74. a second support arm; 80. a third spreader; 90. a second support; 100. a fourth spreader; 110. and a second moving member.
Detailed Description
The present application will be specifically described below by way of exemplary embodiments. It is to be understood that elements, structures, and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In describing the present application, it should be noted that: (1) The terms "inner", "outer", "upper", "lower", "front", "rear", etc. indicate orientations or positional relationships based on the positional relationships shown in the drawings, are merely for convenience in describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the application; (2) When an element is referred to as being "fixed to" or "supported on" another element, it can be directly on the other element or intervening elements may also be present; (3) When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; (4) The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The technical scheme in the embodiment of the application aims to solve the technical problems of the technology, and the general thought is as follows:
the application provides a cervical vertebra stretching device which is used for driving a bolt to move in a cervical vertebra correcting operation so as to stretch a cervical vertebra, and aims to solve the technical problem that a phenomenon of cutting the vertebral body by a screw easily occurs in the prior art.
Based on the above, the cervical vertebra expanding device provided by the application has the advantages that the first expanding piece, the first supporting piece and the second expanding piece are arranged, so that in the process of expanding the cervical vertebra cone, two screws on one side of an affected part can be connected at the same time, so that the two cones on one side of the affected part are simultaneously expanded, and the expanding force born by the original cone is applied to the two cones, so that compared with the prior art, the pressure required to be overcome by the expanding device is reduced, the technical problem that the phenomenon of cutting the cone by the screws easily occurs in the prior art is solved, the possibility of the phenomenon of cutting the cone by the screws is further reduced, and the success rate of the cervical vertebra correcting operation is further improved.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
Example 1
Referring to fig. 1 to 3, there is shown a schematic structural view of the cervical vertebra distracting device of the present application in one embodiment. The cervical vertebra opening device is used for driving a bolt to move in cervical vertebra correction operation so as to realize opening of cervical vertebra, and comprises a support guide rail 10, a first adjusting unit 20, a first opening piece 30, a first supporting piece 40 and a second opening piece 50.
The support guide rail 10 is used for supporting other components, and is convenient for adjust the relative position of the propping piece and the screw simultaneously, so that accurate connection of the screw is realized. Specifically, as shown in fig. 1 and 2, the support rail 10 is in a toothed shape, the support rail 10 extends along an arc direction, so that compared with the prior art, the support rail 10 can be better adapted to the physiological curvature of the cervical vertebra of a human body, so that the screw can fix and prop open the cervical vertebra in a stable posture, and further the success rate of cone correction surgery is improved, wherein, as shown in fig. 3, the support rail 10 is preferably in a circular arc shape, meanwhile, the radius of the support rail 10 is r, and the central angle of the support rail 10 is alpha, so that the radius of the support rail 10 is 260mm less than or equal to r less than or equal to 360mm, and the angle of 60 DEG is less than or equal to 160 deg.
The first adjusting unit 20 is connected with the support rail 10 to reciprocate along the support rail 10, and the first adjusting unit 20 is used for driving the first spreader 30 and the second spreader 50 to move, so that the first spreader 30 and the second spreader 50 can be accurately connected with corresponding screws. Specifically, as shown in fig. 1 and 2, the first adjusting unit 20 includes a first slider 21, a first gear set 22, a first stop piece 23, and a first support arm 24, where the first slider 21 is configured to be arc-shaped corresponding to the support rail 10, and the first slider 21 is connected to the support rail 10 in a sliding fit manner, so as to reciprocate along the support rail 10, thereby implementing adjustability of the position of the first adjusting unit 20, and further implementing adjustability of the positions of the first spreader 30 and the second spreader 50; the first sliding block 21 is in an arc hollow sleeve shape, the first sliding block 21 is sleeved outside the support guide rail 10 to slide reciprocally along the support guide rail 10, and meanwhile, the screw is driven to follow the physiological curvature of the cervical vertebra of the human body to perform position and angle switching actions; the first gear set 22 is fixedly arranged on the first sliding block 21 in an integrated forming or welding mode, and the first gear set 22 is meshed with the rack part of the support guide rail 10 for transmission so as to drive the first sliding block 21 to move on the support guide rail 10 through rotation of the gear; the first stop piece 23 is hinged on the first sliding block 2, and the first stop piece 23 is contacted with the rack part of the support guide rail 10 so as to realize unidirectional (i.e. opening direction) movement of the first sliding block 2 according to the matching principle of ratchet teeth of a ratchet wheel; one end of the first supporting arm 24 is fixedly connected with the first slider 21 so as to move synchronously along with the first slider 21, and the other end of the first supporting arm 24 is connected with the first supporting piece 40 and the first propping piece 30 so as to drive the first supporting piece 40 and the first propping piece 30 to move synchronously.
The first propping-up member 30 is connected with the first adjusting unit 20 to be supported by the first adjusting unit 20, and the first propping-up member 30 is used for being connected with a screw to drive the screw to move, thereby realizing the movement of the cervical vertebrae. Specifically, as shown in fig. 1 and fig. 2, the first spreader 30 includes a sleeve portion 31 and a connecting portion 32, where the sleeve portion 31 is hollow and cylindrical, the sleeve portion 31 is used to socket a screw to drive the screw to move, one end of the connecting portion 32 is fixedly connected with the sleeve portion 31, and the other end of the connecting portion 32 is preferably rotatably connected with the first support arm 24, so that the first spreader 30 can rotate relative to the first support arm 24 while synchronously moving along with the first support arm 24, thereby better adjusting the relative position of the first spreader 30 and the screw, further improving the accuracy of connection between the first spreader 30 and the screw, and avoiding the phenomenon of stress concentration caused by unsuitable position of the first spreader 30; as further shown in fig. 1 and 2, the connecting portion 32 is hinged to the first support arm 24, and the rotation axes of the connecting portion 32 and the first support arm 24 are parallel to the first support member 40. Of course, in other embodiments, the first spreader 30 is fixedly coupled to the first support arm 24 by welding or bolting.
The first supporting member 40 is fixedly connected with the first adjusting unit 20 to be supported by the first adjusting unit 20, and the first supporting member 40 is used for supporting the second supporting member 50. Specifically, as shown in fig. 1 and 2, the first support 40 has a circular rod shape, and the first support 40 extends in a straight line direction; in order to improve the accuracy of the connection between the two screws at one side of the affected part, the cervical vertebra stretching device further comprises a first moving piece 60, wherein the first moving piece 60 is connected with the first supporting piece 40 in a matched manner so as to move on the first supporting piece 40, the first moving piece 60 is connected with the second stretching piece 50 so as to drive the second stretching piece 50 to synchronously move along the linear direction, and therefore the relative position between the second stretching piece 50 and the first stretching piece 30 is adjusted, namely, the relative position between the second stretching piece 50 and the first stretching piece 30 can be adjusted according to different intervals between the two screws at one side of the affected part, and further the accuracy of the connection between the two screws at one side of the affected part can be improved, and the phenomenon of stress concentration is further reduced; as further shown in fig. 1 and 2, the first supporting member 40 has a first external thread, the first moving member 60 is hollow and sleeve-shaped, the first moving member 60 has a first internal thread, the first moving member 60 is sleeved outside the first supporting member 40, the first internal thread is matched with the first external thread, and when in use, the first moving member 60 is rotated to realize the reciprocating movement of the first moving member 60 on the first supporting member 40, so as to realize the adjustment of the position of the first moving member 60 on the first supporting member 40.
The second spreader 50 is connected to the first support 40 to be supported by the first support 40, and the second spreader 50 is disposed side by side with the first spreader 30 in a direction parallel to the first support 40. Specifically, as shown in fig. 1 and fig. 2, the second spreader 50 is rotationally connected with the first moving member 60, so as to move synchronously with the first moving member 60 and simultaneously rotate relative to the first moving member 60, so that the relative position of the second spreader 50 and the screw can be better adjusted, the accuracy of connection between the second spreader 50 and the screw is further improved, and the phenomenon of stress concentration caused by improper position of the second spreader 50 is avoided; for the structure of the second spreader 50 and the specific connection manner between the second spreader 50 and the first movable member 60, reference may be made to the above-mentioned specific connection manner between the first spreader 30 and the first support arm 24, and the disclosure is not repeated herein. Of course, in other embodiments, the second spreader 50 may be fixedly connected to the first movable member 60 by welding or bolting.
Based on the above, the application has at least the following technical effects or advantages:
according to the cervical vertebra expanding device, the first expanding piece 30, the first supporting piece 40 and the second expanding piece 50 are arranged, so that in the process of expanding the cervical vertebra cone, two screws on one side of an affected part can be connected at the same time, and the two cones on one side of the affected part are expanded at the same time, so that the expanding force born by the original cone is applied to the two cones, compared with the prior art, the pressure required to be overcome by the expanding device is reduced, the technical problem that the phenomenon of cutting the cone by the screws easily occurs in the prior art is solved, the possibility of the phenomenon of cutting the cone by the screws is further reduced, and the success rate of cervical vertebra correcting operation is further improved.
In order to realize the effect of stably expanding the screws on two sides of an affected part, so as to further avoid the phenomenon that the screws cut vertebral bodies, the application further improves the prior art, sets two sleeves in another position adjusting unit, can simultaneously connect the two screws on the other side of the affected part in the process of expanding the cervical vertebral cone, and stably expands the cones on two sides of the affected part, thereby applying the expanding force born by the original cone to the two cones, further reducing the pressure needed to be overcome by the expander, better solving the technical problem that the phenomenon that the screws cut the vertebral bodies easily occurs in the prior art, further reducing the possibility of the phenomenon that the screws cut the vertebral bodies, and further improving the success rate of the cervical vertebral correction operation. The concrete explanation is as follows:
with continued reference to fig. 1 and 2, the cervical vertebra distraction device of the present application further comprises a second adjustment unit 70, a third distractor 80, a second support 90 and a fourth distractor 100. Wherein:
the second adjusting unit 70 is connected with the support rail 10 to reciprocate along the support rail 10, and the second adjusting unit 70 is used for driving the third spreader 80 and the fourth spreader 100 to move, so that the third spreader 80 and the fourth spreader 100 can be accurately connected with corresponding screws thereof, and the second adjusting unit 70 is arranged side by side with the first adjusting unit 20 along the direction of the support rail 10. Specifically, as shown in fig. 1 and 2, the second adjusting unit 70 includes a second slider 71, a second gear set 72, a second stop piece 73 and a second supporting arm 74, where the second slider 71 is arc-shaped corresponding to the supporting rail 10, and the second slider 71 is slidably connected with the supporting rail 10 so as to reciprocate along the supporting rail 10, thereby realizing the adjustability of the position of the second adjusting unit 70, and further realizing the adjustability of the positions of the third spreader 80 and the fourth spreader 100; the second slider 71 is in an arc hollow sleeve shape, and the second slider 71 is sleeved outside the support rail 10 so as to slide back and forth along the support rail 10; the second gear set 72 is meshed with the rack part of the support rail 10 to drive the second slider 71 to move on the support rail 10 through the rotation of the gear; the second stop piece 73 is hinged on the second slide block 71, and the second stop piece 73 is contacted with the rack part of the support guide rail 10 so as to realize unidirectional (i.e. opening direction) movement of the second slide block 71 according to the matching principle of ratchet teeth of the ratchet wheel; one end of the second supporting arm 74 is fixedly connected with the second slider 71 so as to move synchronously with the first slider 21, and the other end of the second supporting arm 74 is connected with the second supporting member 90 and the third supporting member 80 so as to drive the second supporting member 90 and the third supporting member 80 to move synchronously.
The third spreader 80 is connected with the second adjusting unit 70 to be supported by the second adjusting unit 70, and the third spreader 80 is disposed side by side with the first spreader 30 in a direction parallel to the second supporting member 90. Specifically, the third spreader 80 is rotationally connected with the second adjusting unit 70, so as to move synchronously with the second adjusting unit 70 and simultaneously rotate relative to the second adjusting unit 70, so that the relative position of the third spreader 80 and the screw can be better adjusted, the accuracy of connection between the third spreader 80 and the screw is improved, and the phenomenon of stress concentration caused by unsuitable position of the third spreader 80 is avoided. For the structure of the third spreader 80 and the connection manner of the third spreader with the second adjusting unit 70, please refer to the first spreader 30 and the connection manner of the third spreader with the first adjusting unit 20, which are not described herein.
The second supporting member 90 is fixedly connected with the second adjusting unit 70 to be supported by the second adjusting unit 70, and the second supporting member 90 is used for supporting the fourth supporting member 100. Specifically, as shown in fig. 1 and 2, the second support 90 has a circular rod shape, the second support 90 is parallel to the first support 40, and the second support 90 is coaxial with the first support 40; in order to improve the accuracy of the connection with two screws on one side of an affected part, the cervical vertebra stretching device further comprises a second moving member 110, wherein the second moving member 110 is connected with the second supporting member 90 in a matched manner so as to move on the second supporting member 90, the moving direction of the second moving member 110 is parallel to the direction of the second supporting member 90, the second moving member 110 is connected with the fourth stretching member 100 so as to drive the fourth stretching member 100 to synchronously move along the direction parallel to the second supporting member 90, and therefore the relative position between the fourth stretching member 100 and the third stretching member 80 is adjusted, namely the relative position between the fourth stretching member 100 and the third stretching member 80 can be adjusted according to different intervals between two screws on one side of the affected part, and further the connection accuracy of two screws on one side of the affected part can be improved, and the occurrence of stress concentration is further reduced; as further shown in fig. 1 and 2, the second supporting member 90 has a second external thread, the second moving member 110 is in a hollow sleeve shape, the second moving member 110 has a second internal thread, the second moving member 110 is sleeved outside the second supporting member 90, and the second internal thread is matched with the second external thread, and when in use, the second moving member 110 is rotated to realize the reciprocating movement of the second moving member 110 on the second supporting member 90, so as to realize the adjustment of the position of the second moving member 110 on the second supporting member 90.
The fourth spreader 100 is connected to the second support 90 to be supported by the second support 90, and the fourth spreader 100 is disposed side by side with the third spreader 80 in a direction parallel to the second support 90. Specifically, as shown in fig. 1 and fig. 2, the fourth spreader 100 is rotationally connected to the second moving member 110, so as to move synchronously with the second moving member 110 and simultaneously rotate relative to the second moving member 110, so that the relative position of the fourth spreader 100 and the screw can be better adjusted, the accuracy of connection between the fourth spreader 100 and the screw is further improved, and the phenomenon of stress concentration caused by unsuitable position of the fourth spreader 100 is avoided. For the structure of the fourth spreader 100 and the specific connection manner between the fourth spreader 100 and the second movable member 110, reference may be made to the above-mentioned specific connection manner between the first spreader 30 and the first support arm 24, and the disclosure is not repeated herein. Of course, in other embodiments, the fourth spreader 100 may be fixedly connected to the second movable member 110 by welding or bolting.
Based on the above, the application has at least the following technical effects or advantages:
according to the cervical vertebra opening device, on the basis of the first opening piece 30, the first supporting piece 40 and the second opening piece 50, the third opening piece 80, the second supporting piece 90 and the fourth opening piece 100 are arranged, in the process of opening the cervical vertebral cone, two screws positioned on each side of an affected part can be connected, so that two groups of screws can be simultaneously opened, and compared with the prior art, the opening force born by the original cone is further realized and applied to the two cones, the pressure required to be overcome by the opening device is further reduced, the technical problem that the phenomenon that the screws cut the vertebral body easily occurs in the prior art is better solved, the possibility of the phenomenon that the screws cut the vertebral body is further reduced, and the success rate of cervical vertebra correction surgery is further improved.
In addition, according to the cervical vertebra opening device, the positions of the first adjusting unit 20 and the second adjusting unit 70 on the support guide rail 10 are adjustable, namely the first adjusting unit 20 comprises the first sliding block 21, the first sliding block 21 is connected with the support guide rail 10 in a sliding fit manner, meanwhile, the second adjusting unit 70 comprises the second sliding block 72, and the second sliding block 72 is connected with the support guide rail 10 in a sliding fit manner, so that the flexibility of cone opening position and stress adjustment can be improved, a doctor can flexibly select proper opening position and opening strength according to actual needs, and the efficiency of cervical vertebra correcting operation can be improved.
For a clearer description of the application, the operation of the cone opening according to the application will be described below by taking the embodiment shown in fig. 1 and 2 as an example:
during operation, first, screws are driven into two vertebral bodies at two sides of the affected part. Rotating the first gear set 22, adjusting the rotation angle of the first spreader 30 so that the first spreader 30 is sleeved with the screw, rotating the first moving member 60 to adjust the position of the second spreader 50, and adjusting the rotation angle of the second spreader 60 so that the second spreader 60 is sleeved with the screw;
similarly, the positions and rotation angles of the third and fourth distractors 80, 100 are adjusted to fit the corresponding screws.
The first gear set 22 and the second gear set 72 are rotated to apply a distraction force to the cones on both sides of the lesion until distraction is completed.
Example two
Referring to fig. 4 and 5, the present embodiment is different from the embodiment in that the support rail 10 is arranged in a straight line, i.e., the support rail 10 extends along a straight line.
At this time, as shown in fig. 4 and 5, the support rail 10 is in a rack shape, the first slider 21 and the second slider 71 are in a hollow sleeve shape with a quadrangular prism shape, the first support member 40 and the second support member 90 are parallel to the support rail 10, the moving direction of the first moving member 60 is parallel to the direction of the support rail 10, and the first moving member 60 is connected to the second supporting member 50 to drive the second supporting member 50 to move synchronously along the direction parallel to the support rail 10.
Of course, as an alternative embodiment, the first gear set 22 may be replaced by a worm gear set, where the support rail 10 is a worm, and the worm gear set is meshed with the worm for driving, so as to realize movement of the first slider 21 along the worm, and meanwhile, due to self-locking property between the worm gears and the worm, the first stop piece 23 is not required to be provided, so that unidirectional movement of the first slider 21 can be ensured. In addition, the first adjusting unit 20 may be fixedly connected with the support rail 10; similarly, the second gear set 72 may be replaced by a worm gear set, where the support rail 10 is a worm, and the worm gear set and the worm are engaged to drive, so as to realize movement of the second slider 71 along the worm, and meanwhile, due to self-locking characteristics between the worm gears, the second stop piece 73 is not required to be provided, so that unidirectional movement of the second slider 71 can be ensured.
Claims (7)
1. A cervical spine distraction device, characterized in that the cervical spine distraction device comprises:
a support rail;
the first adjusting unit is connected with the support guide rail;
a first spreader connected to the first adjustment unit;
the first supporting piece is fixedly connected with the first adjusting unit;
a second spreader connected to the first support, the second spreader being disposed side by side with the first spreader in a direction parallel to the support rail;
the first moving piece is connected with the first supporting piece in a matching way, and the first moving piece is connected with the second expanding piece;
the first support piece is rod-shaped, the first support piece is provided with first external threads, the first moving piece is hollow sleeve-shaped, the first moving piece is provided with first internal threads, the first moving piece is sleeved outside the first support piece, and the first internal threads are matched with the first external threads;
the second adjusting unit is connected with the support guide rail, and is arranged side by side with the first adjusting unit in the direction along the support guide rail;
a third spreader connected to the second adjusting unit, the third spreader being disposed side by side with the first spreader in a direction parallel to the first support;
the second supporting piece is fixedly connected with the second adjusting unit; the second support piece is parallel to the first support piece, and the second support piece is coaxial with the first support piece;
a fourth spreader connected to the second support, the fourth spreader being disposed side by side with the third spreader in a direction parallel to the first support;
the second moving piece is connected with the second supporting piece in a matched mode, the moving direction of the second moving piece is parallel to the direction of the first supporting piece, and the second moving piece is connected with the fourth supporting piece.
2. The cervical spine distraction device of claim 1, wherein the second distraction member is rotatably coupled to the first translation member.
3. The cervical spine distraction device of claim 1 or 2, wherein the first distraction member is rotatably connected with the first adjustment unit.
4. The cervical spine distraction device of claim 1, wherein the fourth distraction member is rotatably coupled to the second translation member.
5. The cervical vertebra distraction device of claim 4, wherein the third distraction member is rotatably connected to the second adjustment unit.
6. The cervical spine distraction device of claim 1, wherein the first adjustment unit comprises:
the first sliding block is connected with the support guide rail in a sliding fit manner;
the second adjusting unit includes:
and the second sliding block is connected with the support guide rail in a sliding fit manner.
7. The cervical spine distraction device of claim 1, wherein the support rail is arcuate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910363632.7A CN110179507B (en) | 2019-04-30 | 2019-04-30 | Cervical vertebra stretching device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910363632.7A CN110179507B (en) | 2019-04-30 | 2019-04-30 | Cervical vertebra stretching device |
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| CN110179507A CN110179507A (en) | 2019-08-30 |
| CN110179507B true CN110179507B (en) | 2023-12-08 |
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| CN201910363632.7A Active CN110179507B (en) | 2019-04-30 | 2019-04-30 | Cervical vertebra stretching device |
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| CN210077744U (en) * | 2019-04-30 | 2020-02-18 | 首都医科大学附属北京天坛医院 | Cervical vertebra opening device |
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| US7914536B2 (en) * | 2005-03-11 | 2011-03-29 | Aesculap Ag | Bone repair device and method |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103338720A (en) * | 2011-01-26 | 2013-10-02 | 华沙整形外科股份有限公司 | Instruments and techniques for adjusting relative positioning of bones or bony tissues |
| WO2015116624A1 (en) * | 2014-01-29 | 2015-08-06 | Spinal Usa, Inc. | Minimally invasive devices, systems and methods for treating the spine |
| CN207870913U (en) * | 2017-06-21 | 2018-09-18 | 上海三友医疗器械股份有限公司 | Pyramidal support device assembly |
| CN210077744U (en) * | 2019-04-30 | 2020-02-18 | 首都医科大学附属北京天坛医院 | Cervical vertebra opening device |
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