CN118044870B - Spinal column dislocation resetting device - Google Patents
Spinal column dislocation resetting device Download PDFInfo
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- CN118044870B CN118044870B CN202410451942.5A CN202410451942A CN118044870B CN 118044870 B CN118044870 B CN 118044870B CN 202410451942 A CN202410451942 A CN 202410451942A CN 118044870 B CN118044870 B CN 118044870B
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- 210000000078 claw Anatomy 0.000 claims abstract description 77
- 230000009467 reduction Effects 0.000 claims abstract description 24
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 229910052719 titanium Inorganic materials 0.000 abstract description 4
- 239000010936 titanium Substances 0.000 abstract description 4
- 238000004904 shortening Methods 0.000 abstract 1
- 206010017076 Fracture Diseases 0.000 description 20
- 208000010392 Bone Fractures Diseases 0.000 description 19
- 230000006378 damage Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 210000001032 spinal nerve Anatomy 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 208000014674 injury Diseases 0.000 description 4
- 208000007356 Fracture Dislocation Diseases 0.000 description 3
- 206010041569 spinal fracture Diseases 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 206010010254 Concussion Diseases 0.000 description 1
- 206010029174 Nerve compression Diseases 0.000 description 1
- 208000020339 Spinal injury Diseases 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000000278 spinal cord Anatomy 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000472 traumatic effect Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
- A61B17/7091—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for applying, tightening or removing longitudinal element-to-bone anchor locking elements, e.g. caps, set screws, nuts or wedges
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Neurology (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
本发明属于医疗设备技术领域，具体涉及一种脊柱脱位复位装置；其包括中枢锁扣以及两组固定卡爪；中枢锁扣上设置有固定杆，固定杆上设置有钛棒A，中枢锁扣中设置有驱动组件；两组固定卡爪分别位于中枢锁扣的两个相对侧，固定卡爪的短边的端部设置有钛棒B，固定卡爪的长边滑动设置在中枢锁扣中并与驱动组件传动连接。该脊柱脱位复位装置中的两组固定卡爪上的钛棒B能够固定在骨折处放置的椎弓根螺钉上，并将固定杆上的钛棒A固定在两组固定卡爪之间椎体上放置的椎弓根螺钉上，利用驱动组件驱动两组固定卡爪同步动作，便可以轻松的牵引骨折处进行复位，从而使骨折锥体的复位更加的简单，并简化手术流程、缩短手术时间。
The present invention belongs to the technical field of medical equipment, and specifically relates to a spinal dislocation reduction device; it includes a central locking buckle and two groups of fixed claws; a fixed rod is provided on the central locking buckle, a titanium rod A is provided on the fixed rod, and a driving assembly is provided in the central locking buckle; the two groups of fixed claws are respectively located on two opposite sides of the central locking buckle, and the ends of the short sides of the fixed claws are provided with titanium rods B, and the long sides of the fixed claws are slidably arranged in the central locking buckle and are connected to the driving assembly. The titanium rods B on the two groups of fixed claws in the spinal dislocation reduction device can be fixed on the pedicle screws placed at the fracture site, and the titanium rod A on the fixed rod is fixed on the pedicle screws placed on the vertebral body between the two groups of fixed claws. The two groups of fixed claws are driven by the driving assembly to move synchronously, so that the fracture site can be easily pulled for reduction, thereby making the reduction of the fracture cone simpler, simplifying the surgical process, and shortening the surgical time.
Description
Technical Field
The invention belongs to the technical field of medical equipment, and particularly relates to a spinal dislocation resetting device.
Background
Spinal fracture (dislocation) is the common traumatic disease, is the most common fracture of thoracolumbar vertebra, most of the fracture needs to be treated by surgery except a few slight fractures with good stability, and the aims of reducing spinal nerve pressure, restoring normal spinal sequence and stabilizing spinal are fulfilled, so that the recovery of patients is promoted and the life quality is improved.
Generally, for fracture with insignificant displacement or easy reduction, the operation purpose can be quickly achieved by combining a posterior pedicle screw with a titanium rod operation mode; however, for a severely fractured dislocated spine fracture, the current conventional treatment methods have the following disadvantages:
1. The fracture dislocation is serious, the displacement of the fracture end is obvious, sometimes even the fracture end is clamped and pressed, the conventional instrument is inconvenient to reset and apply force, the spine cannot be corrected by applying larger traction force, the fracture end is difficult to reset, and the functional reset is difficult to achieve;
2. When the spinal fracture is serious, spinal nerves are often accompanied with spinal nerve compression injury, spinal nerves are protected as much as possible in the operation process so as to avoid secondary injury, the conventional instrument in the operation cannot control the restoring force in the restoring process, and the spinal nerves are easy to generate concussion injury due to large change of restoring force, so that the risk of spinal injury is increased;
3. the serious fracture dislocation is difficult to reset, the operation time is prolonged, the blood loss of a patient is possibly increased, and the operation risk is increased. Therefore, the invention provides a spine fracture dislocation resetting device convenient for applying larger traction force, which is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a spinal dislocation resetting device, which aims to solve the technical problems that the conventional instrument in the prior art is inconvenient to apply force during resetting, can not apply larger traction force to correct the spinal column, and causes difficult resetting of a fracture end and difficult realization of functional resetting.
The invention is realized by the following technical scheme:
a spine dislocation resetting device, which comprises a central lock catch and two groups of fixed claws;
the central lock catch is provided with a fixed rod, one end of the fixed rod, which is far away from the central lock catch, is provided with a titanium rod A, the inside of the central lock catch is provided with a driving component, and the operating end of the driving component extends to the outside of the central lock catch;
The fixed clamping claws are of an L-shaped structure, the two groups of fixed clamping claws are respectively positioned at two opposite sides of the central lock catch, a titanium rod B is arranged at the end part of the short side of the fixed clamping claws, the long side of the fixed clamping claws is arranged in the central lock catch in a sliding manner and is in transmission connection with the driving assembly, and the two groups of fixed clamping claws are connected with the central lock catch to form an m-shaped structure; the short sides of the two groups of fixed jaws can be controlled to synchronously move in a direction away from or close to the fixed rod by operating the driving assembly.
In order to better realize the invention, the structure is further optimized, and the fixed claw comprises a claw body and a sliding rod;
The length of the claw body is smaller than that of the sliding rod, and the fixed end of the claw body is connected with the fixed end of the sliding rod to form an L-shaped structure.
In order to better realize the invention, the structure is further optimized, and the fixed end of the sliding rod is provided with a perforation and two groups of limiting blocks A;
the two groups of limiting blocks A are positioned on the lower end face of the sliding rod, gaps of the two groups of limiting blocks A are matched with the width of the claw body, the perforation is positioned between the two groups of limiting blocks A, and a rotary nut A is rotatably arranged on one surface of the perforation, which is away from the limiting blocks A;
The fixed end of the claw body is provided with a screw rod A, the claw body is arranged between the two groups of limiting blocks A in a sliding mode, and the screw rod A penetrates through the through hole to be in threaded connection with the rotating nut A.
In order to better realize the invention, the structure is further optimized, the through holes are round through holes, the inner side walls of the through holes are provided with limit grooves, and the limit grooves are arranged around the circumferential direction of the through holes;
The outer side wall of the rotary nut A is provided with a limiting protrusion matched with the limiting groove, the limiting protrusion is arranged around the circumference of the rotary nut A, and the rotary nut A is arranged at the perforation position through the matching rotation of the limiting protrusion and the limiting groove.
In order to better realize the invention, the structure is further optimized, and the lower end surface of the central lock catch is provided with a through hole and two groups of limiting blocks B;
the gap between the two groups of limiting blocks B is matched with the width of the fixed rod, the through hole is positioned between the two groups of limiting blocks B, the through hole penetrates through the top of the central lock catch, and a rotary nut B is arranged at the top of the outer side of the central lock catch;
The fixed end of the fixed rod is provided with a screw rod B, the fixed rod is arranged between the two limiting blocks B in a sliding mode, and the screw rod B penetrates through the through hole and is in threaded connection with the rotating nut B.
In order to better implement the present invention, a further optimization is made in the above structure, the driving assembly includes a driving gear;
The driving gear is rotatably arranged in the central lock catch, and the rotation axis of the driving gear is parallel to the short side of the fixed claw;
And one side of the long side of the fixed claw is provided with a latch A matched with the driving gear, and the long sides of the two groups of fixed claws are respectively positioned at two sides of the driving gear.
In order to better implement the present invention, further optimization is made in the above structure, the driving assembly further includes an adjusting nut;
The end face of the driving gear is provided with a rotating part, the rotating part extends to the outer top of the central lock catch, the adjusting nut is provided with a clamping groove matched with the rotating part, and the adjusting nut is sleeved on the driving gear through the clamping groove and the matching of the rotating part.
In order to better realize the invention, in the structure, the cross section of the rotating part is square, the cross section of the clamping groove is matched with the cross section of the rotating part, and the outer side wall of the adjusting nut is regular hexagon.
In order to better realize the invention, in the structure, the long side of the fixed claw is provided with a latch B on one surface deviating from the driving gear, the side of the central lock catch corresponding to the latch B is provided with a limit buckle, and the limit buckle can limit the short side of the fixed claw to move towards the direction close to the fixed rod.
In order to better realize the invention, the structure is further optimized, the middle part of the limiting buckle is hinged on the central locking buckle, a limiting spring is arranged at the hinge position of the limiting buckle, and two ends of the limiting spring are respectively propped against the limiting buckle and the central locking buckle, so that the propping end of the limiting buckle is always clamped in the clamping tooth B;
The surface, far away from the short side of the fixed claw, of the clamping tooth B is a vertical surface, and the axis of the long side of the fixed claw is perpendicular to the vertical surface; and one surface of the latch B, which is close to the short side of the fixed claw, is an inclined surface.
In summary, the spinal dislocation resetting device provided by the invention has at least the following technical effects:
the titanium rod B on the two groups of fixed claws in the spine dislocation resetting device can be fixed on the pedicle screw placed on the vertebral body at the fracture position, the titanium rod A on the fixed rod is fixed on the pedicle screw placed on the vertebral body between the two groups of fixed claws, the two groups of fixed claws are driven by the driving assembly to synchronously act, and the fracture position can be easily pulled for resetting, so that the resetting of the fracture vertebral body is simpler, the operation flow is simplified, and the operation time is shortened.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view showing a structure of a spinal column dislocation reduction apparatus according to embodiment 1;
FIG. 2 is a schematic view of the interior of the spinal column dislocation reduction apparatus of the present invention;
Fig. 3 is a schematic view of the structure of a driving gear and an adjusting nut in the spinal column dislocation resetting device according to embodiment 1;
fig. 4 is a schematic view showing the structure of a fixing jaw in a spinal column dislocation reduction apparatus according to embodiment 1;
Fig. 5 is a schematic view showing a structure of a spinal column dislocation reduction apparatus according to embodiment 2;
FIG. 6 is a side view of a spinal column dislocation reduction apparatus as recited in example 2;
fig. 7 is a longitudinal cross-sectional view of a central locking buckle in the spinal column dislocation reduction apparatus according to embodiment 2.
Reference numerals:
1. A central latch; 11. a fixed rod; 111. a titanium rod A; 12. a drive assembly; 121. a drive gear; 1211. a rotating part; 122. an adjusting nut; 1221. a clamping groove; 13. limiting buckle; 14. a through hole; 15. a limiting block B; 16. rotating the nut B; 17. a screw B;
2. A fixed claw; 21. a claw body; 211. a screw A; 22. a slide bar; 221. a limiting block A; 222. perforating; 2221. a limit groove; 223. rotating the nut A; 2231. a limit protrusion; 224. latch A; 225. latch B; 23. titanium rod B.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
In the description of the present invention, it is to be noted that, unless otherwise indicated, the meaning of "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
Example 1:
as shown in fig. 1 and 4:
a spine dislocation resetting device, which comprises a central lock catch 1 and two groups of fixed clamping jaws 2; wherein,
The central lock catch 1 is provided with a fixing rod 11, one end of the fixing rod 11, which is far away from the central lock catch 1, is provided with a titanium rod A111, the inside of the central lock catch 1 is provided with a driving component 12, and the operating end of the driving component 12 extends to the outside of the central lock catch 1;
The fixed clamping jaw 2 is of an L-shaped structure, the two groups of fixed clamping jaws 2 are respectively positioned at two opposite sides of the central lock catch 1, a titanium rod B23 is arranged at the end part of the short side of the fixed clamping jaw 2, the long side of the fixed clamping jaw 2 is slidably arranged in the central lock catch 1 and is in transmission connection with the driving component 12, the two groups of fixed clamping jaws 2, the central lock catch 1 and the fixed rod 11 are connected to form an m-shaped structure, namely the extending direction of the short side of the two groups of fixed clamping jaws 2 is the same as the extending direction of the fixed rod 11, and the shape of a side view after the two groups of fixed clamping jaws 2, the central lock catch 1 and the fixed rod 11 are connected is m-shaped; by operating the operating end of the driving unit 12, the short sides of the two groups of fixing claws 2 can be controlled to move synchronously in a direction away from or toward the fixing lever 11.
When the spine of a patient is reset, medical staff can firstly place pedicle screws on the spine of the patient to be corrected, then respectively connect and fix the titanium rods B23 on the two groups of fixed clamping claws 2 in the spine dislocation reset device with the pedicle screws on the two fractured (dislocated) spines, and connect and fix the titanium rods A111 on the fixed rod 11 with the pedicle screws on the vertebral bodies between the two groups of fixed clamping claws 2;
Then, the short sides of the two groups of fixed claws 2 can be driven to synchronously move away from or close to the fixed rod 11 by controlling the operation end of the driving assembly 12 so as to easily pull the fractured spine for reduction.
The arrangement of the drive assembly 12 allows for easier application of force during reduction of the fractured spine, thereby allowing for easier and less time-consuming surgical procedures.
In this embodiment, the driving assembly 12 includes a driving gear 121; wherein,
The driving gear 121 is rotatably arranged in the central lock catch 1, and the rotation axis of the driving gear 121 is parallel to the short side of the fixed claw 2;
One side of the long side of the fixed claw 2 is provided with a latch A224 matched with the driving gear 121, and the long sides of the two groups of fixed claws 2 are respectively positioned at two sides of the driving gear 121;
In the process of resetting the fractured spine of the patient, a medical staff can rotate the driving gear 121 through tools (a wrench, a hand wrench and the like) so as to better apply force to the fractured spine, so that the fractured spine is easily pulled, and the resetting of the spine is completed;
Meanwhile, the driving gear 121 and the latch A224 are matched to accurately control the displacement of the fractured spinal column, so that the condition that vibration damage or aggravated spinal cord damage is caused to the spinal column of a patient due to overlarge displacement is avoided, and the operation process is safer.
Preferably, the drive assembly 12 further includes an adjustment nut 122; wherein,
The end face of the driving gear 121 is provided with a rotating part 1211, the rotating part 1211 extends to the outer top of the central lock catch 1, the adjusting nut 122 is provided with a clamping groove 1221 matched with the rotating part 1211, and the adjusting nut 122 is sleeved on the driving gear 121 through the matching of the clamping groove 1221 and the rotating part 1211;
The medical staff can use the tool to pull the adjusting nut 122 to drive the driving gear 121 to rotate so as to better apply force to the fractured spine and complete the reduction of the spine.
More preferably, the cross-sectional shape of the rotating portion 1211 is square, and the cross-sectional shape of the slot 1221 matches the cross-sectional shape of the rotating portion 1211, so as to avoid the occurrence of relative displacement between the driving gear 121 and the adjusting nut 122 during the rotation of the driving gear 121, thereby further improving the safety of the spinal dislocation resetting device during use;
The outer side wall of the adjusting nut 122 is regular hexagon, so as to better adapt to tools such as a wrench and the like existing in the market.
Optimally, the long side of the fixed claw 2, which faces away from the driving gear 121, is provided with a latch B225, and the side edge of the central lock catch 1, which corresponds to the latch B225, is provided with a limit buckle 13;
in the use, limit buckle 13 can restrict the short side of fixed jack catch 2 and to being close to the direction removal of dead lever 11, when avoiding medical personnel to release adjusting nut 122, two fixed jack catch 2 drag back initial position (the position when the fracture) department under the backbone of fracture, lead to the patient to appear the condition emergence of secondary injury.
Of course, when medical personnel need drag the backbone of fracture to the middle part, can press the one end that spacing buckle 13 kept away from fixed jack catch 2, make spacing buckle 13 and tooth B225 separation, at this moment, medical personnel rotate drive gear 121 again, alright be light draw in two sets of fixed jack catch 2 to the middle part to the effect of dragging the backbone of fracture to the middle part is realized.
Optimally, the middle part of the limiting buckle 13 is hinged on the central lock catch 1, a limiting spring is arranged at the hinged part of the limiting buckle 13, and two ends of the limiting spring are respectively propped against the limiting buckle 13 and the central lock catch 1, so that the propped end of the limiting buckle 13 is always clamped in the clamping tooth B225;
The surface of the clamping tooth B225, which is far away from the short side of the fixed clamping jaw 2, is a vertical surface, and the axis of the long side of the fixed clamping jaw 2 is vertical to the vertical surface; one surface of the clamping tooth B225, which is close to the short side of the fixed clamping jaw 2, is an inclined surface;
the clamping end of the limiting buckle 13 is always propped against the vertical surface of the clamping tooth B225 under the action of the limiting spring;
When the medical staff increases the distance between the short sides of the two fixed claws 2 by using the driving assembly 12 (the fractured spine is pulled away from the fixed rod 11), the clamping end of the limiting buckle 13 can slide along the inclined plane of the clamping tooth B225 until the clamping end of the limiting buckle 13 moves to the junction of the inclined plane of the clamping tooth B225 and the vertical plane, at the moment, the medical staff rotates the driving assembly 12 again, namely the short sides of the two groups of fixed claws 2 move away from the fixed rod 11 again, and the clamping end of the limiting buckle 13 moves to the position of the vertical plane of the clamping tooth under the action of the limiting spring, namely the position between the two adjacent clamping teeth B225;
If the medical staff does not rotate the driving assembly 12 any more at this time, the clamping end of the limiting buckle 13 can abut against the vertical surface of the clamping tooth B225, so that the situation that the short sides of the two groups of fixing claws 2 move towards the direction close to the fixing rod 11, and the two fixing claws 2 are pulled down to the initial position (the position in the fracture process) by the fractured spine is caused, and the patient is injured secondarily is avoided.
It should be noted that, the cooperation between the limiting buckle 13 and the latch B225 is only for unidirectional limiting of the fixed jaw 2, so as to improve the safety of the spinal dislocation reset device;
The limiting spring is a torsion spring.
Preferably, the fixed jaw 2 comprises a jaw body 21 and a sliding rod 22; wherein,
The length of the claw body 21 is smaller than that of the sliding rod 22, and the fixed end of the claw body 21 is connected with the fixed end of the sliding rod 22 to form an L-shaped structure, that is, the long side of the fixed claw 2 is the sliding rod 22, and the short side of the fixed claw 2 is the claw body 21.
Preferably, the fixed end of the sliding rod 22 is provided with a through hole 222 and two groups of limiting blocks A221;
The claw body 21 has a rectangular block structure;
The two groups of limiting blocks A221 are positioned on the lower end face of the sliding rod 22, the two limiting blocks A221 are arranged along the length direction of the sliding rod 22, the gaps of the two groups of limiting blocks A221 are matched with the width of the claw body 21, the through holes 222 are positioned between the two groups of limiting blocks A221, and a rotating nut A223 is rotatably arranged on one surface of the through holes 222, which is away from the limiting blocks A221;
The fixed end of the claw body 21 is provided with a screw rod A211, the claw body 21 is slidably arranged between two groups of limiting blocks A221, and the screw rod A211 passes through the through hole 222 to be in threaded connection with the rotating nut A223;
When the spine fracture of the patient is accompanied with dislocation in the front-back (front chest back direction), the medical staff can drive the two groups of fixed claws 2 to act by using the driving assembly 12 to realize traction/dragging of the fractured spine, then the distance between the claw body 21 and the sliding rod 22 is adjusted by screwing the rotating nut A223, and the misplaced spine is pulled or pushed by using the claw body 21 so as to realize correction of the dislocation in the front-back direction of the spine.
Of course, the distance between the claw body 21 and the sliding rod 22 is adjustable to match the spine of the patient, because the spine is not a straight column structure, has a certain bending radian, and the fracture of the patient is not necessarily on the same plane line;
therefore, the spine dislocation reduction device can be better matched with the spine of a patient by adjusting the interval between the claw body 21 and the sliding rod 22 so as to complete the spine reduction work.
The above-mentioned stopper a221 can restrict the movement direction of the jaw 21 (can only move in the direction approaching/separating from the slide rod 22) and does not rotate around the axis of the screw a211, so that the spinal dislocation resetting device is safer and more convenient in use.
Preferably, the through hole 222 is a circular through hole, the inner side wall of the through hole 222 is provided with a limit groove 2221, and the limit groove 2221 is arranged around the circumferential direction of the through hole 222;
The outer side wall of the rotating nut A223 is provided with a limit bulge 2231 matched with the limit groove 2221, the limit bulge 2231 is arranged around the rotation center of the rotating nut A223, the rotating nut A223 is arranged at the perforation 222 through the matching rotation of the limit bulge 2231 and the limit groove 2221, so that the rotating nut A223 is prevented from moving along the axial direction of the screw A211, the rotating nut A223 can drive the claw body 21 to move towards the direction close to/far away from the sliding rod 22 during rotation, and the correction of the front-back dislocation of the spine is realized.
Example 2:
as shown in fig. 2, 5 to 7:
as another embodiment of the present invention, the lower end surface of the central lock catch 1 is provided with a through hole 14 and two groups of limiting blocks B15;
the fixed rod 11 is of a rectangular block structure;
The gap between the two groups of limiting blocks B15 is matched with the width of the fixed rod 11, the through hole 14 is positioned between the two groups of limiting blocks B15, the through hole 14 penetrates to the top of the outer side of the central lock catch 1, and the top of the central lock catch 1 is provided with a rotary nut B16;
the fixed end of the fixed rod 11 is provided with a screw rod B17, the fixed rod 11 is arranged between the two groups of limiting blocks B15 in a sliding manner, and the screw rod B17 penetrates through the through hole 14 to be in threaded connection with the rotary nut B16;
When the spine fracture of the patient is accompanied with front-back (front chest back direction) dislocation, the medical staff can screw the rotary nut B16 to adjust the distance between the fixing rod 11 and the central lock catch 1, and the misplaced spine is pulled or pushed by the fixing rod 11 so as to realize the correction of the front-back dislocation of the spine.
Of course, the distance between the fixing rod 11 and the central lock catch 1 is adjustable to match the spine of the patient, because the spine is not a straight column structure, has a certain bending radian, and the fracture of the patient is not necessarily on the same plane line;
Therefore, the spine dislocation resetting device can be better matched with the spine of a patient through the interval between the fixing rod 11 and the central lock catch 1 so as to complete the spine resetting work.
It should be noted that, the above-mentioned stopper B15 can limit the movement direction of the fixing rod 11 (only can move in the direction approaching/separating from the central lock catch 1), and cannot rotate around the axis of the screw B17, so that the spinal dislocation resetting device is safer and more convenient in use.
Optimally, the through hole 14 is a circular through hole, a through hole which is convenient for the screw B17 to pass through is arranged on the driving component 12, and referring to FIG. 7, a sinking groove with a circular cross section is arranged at the top of the driving component 12, a limit clamping groove is arranged on the side wall of the sinking groove, and the limit clamping groove is arranged around the circumferential direction of the sinking groove;
the lateral wall of swivel nut B16 is provided with the fixture block that matches with spacing draw-in groove, and the fixture block encircles the rotation center setting of swivel nut B16, and swivel nut B16 rotates the setting in heavy groove department through the fixture block with spacing draw-in groove (with spacing protruding 2231 in embodiment one and spacing groove 2221 structure the same) to avoid swivel nut B16 to remove along the axis direction of screw rod B17, make swivel nut B16 can drive dead lever 11 to be close to/keep away from the direction removal of central hasp 1 when rotating, thereby realize the correction of dislocation around the backbone.
It should be noted that, the above-mentioned rotating nut B16 is movably matched with the driving assembly 12, that is, when the driving assembly 12 is rotated, the rotating nut B16 does not act together with the driving assembly 12; when the rotary nut B16 is rotated, the driving component 12 does not act together with the driving component 12, so that the spine dislocation resetting device is safer and more convenient to use.
In this embodiment, the fixed claw 2 has a fixed structure, the claw body 21 is fixedly connected with the sliding rod 22, and the space between the claw body 21 and the sliding rod 22 cannot be adjusted; in addition, other structures in this embodiment are identical to those of the spinal column dislocation reduction apparatus described in the first embodiment, and detailed description thereof will not be repeated here, and specific reference may be made to the contents of the first embodiment.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A spinal column dislocation resetting device, which is characterized in that: comprises a central lock catch (1) and two groups of fixed clamping claws (2);
The novel lock is characterized in that a fixing rod (11) is arranged on the central lock catch (1), one end, far away from the central lock catch (1), of the fixing rod (11) is provided with a titanium rod A (111), a driving assembly (12) is arranged in the central lock catch (1), and an operating end of the driving assembly (12) extends to the outside of the central lock catch (1);
the fixed clamping jaws (2) are of an L-shaped structure, the two groups of fixed clamping jaws (2) are respectively positioned on two opposite sides of the central lock catch (1), a titanium rod B (23) is arranged at the end part of the short side of the fixed clamping jaws (2), the long side of the fixed clamping jaws (2) is slidably arranged in the central lock catch (1) and is in transmission connection with the driving assembly (12), and the two groups of fixed clamping jaws (2) are connected with the central lock catch (1) to form an m-shaped structure; the short sides of the two groups of fixed claws (2) can be controlled to synchronously move away from or close to the fixed rod (11) by operating the driving assembly (12);
the fixed claw (2) comprises a claw body (21) and a sliding rod (22);
The length of the claw body (21) is smaller than that of the sliding rod (22), and the fixed end of the claw body (21) is connected with the fixed end of the sliding rod (22) to form an L-shaped structure;
The fixed end of the sliding rod (22) is provided with a through hole (222) and two groups of limiting blocks A (221);
The two groups of limiting blocks A (221) are positioned on the lower end face of the sliding rod (22), gaps of the two groups of limiting blocks A (221) are matched with the width of the claw body (21), the through holes (222) are positioned between the two groups of limiting blocks A (221), and a rotary nut A (223) is rotatably arranged on one surface, deviating from the limiting blocks A (221), of the through holes (222);
The fixed end of the claw body (21) is provided with a screw rod A (211), the claw body (21) is arranged between the two groups of limiting blocks A (221) in a sliding mode, and the screw rod A (211) penetrates through the through hole (222) to be in threaded connection with the rotary nut A (223).
2. The spinal column dislocation reduction apparatus according to claim 1, wherein: the through holes (222) are round through holes, limiting grooves (2221) are formed in the inner side walls of the through holes (222), and the limiting grooves (2221) are arranged around the circumference direction of the through holes (222);
The outer side wall of the rotary nut A (223) is provided with a limit protrusion (2231) matched with the limit groove (2221), the limit protrusion (2231) is arranged around the circumference of the rotary nut A (223), and the rotary nut A (223) is rotatably arranged at the perforation (222) through the cooperation of the limit protrusion (2231) and the limit groove (2221).
3. The spinal column dislocation reduction apparatus according to claim 1, wherein: the lower end face of the central lock catch (1) is provided with a through hole (14) and two groups of limiting blocks B (15);
The gap between the two groups of limiting blocks B (15) is matched with the width of the fixed rod (11), the through hole (14) is positioned between the two groups of limiting blocks B (15), the through hole (14) penetrates through the top of the central lock catch (1), and a rotary nut B (16) is arranged at the top of the outer side of the central lock catch (1);
The fixed end of the fixed rod (11) is provided with a screw rod B (17), the fixed rod (11) is slidably arranged between the two groups of limiting blocks B (15), and the screw rod B (17) penetrates through the through hole (14) to be in threaded connection with the rotary nut B (16).
4. A spinal dislocation reduction device according to any one of claims 1 to 3, wherein: the drive assembly (12) comprises a drive gear (121);
The driving gear (121) is rotatably arranged in the central lock catch (1), and the rotation axis of the driving gear (121) is parallel to the short side of the fixed claw (2);
One side of the long side of the fixed claw (2) is provided with a latch A (224) matched with the driving gear (121), and the long sides of the two groups of fixed claws (2) are respectively positioned at two sides of the driving gear (121).
5. The spinal column dislocation reduction apparatus according to claim 4, wherein: the drive assembly (12) further includes an adjustment nut (122);
The end face of the driving gear (121) is provided with a rotating part (1211), the rotating part (1211) extends to the outer top of the central lock catch (1), the adjusting nut (122) is provided with a clamping groove (1221) matched with the rotating part (1211), and the adjusting nut (122) is sleeved on the driving gear (121) through the matching of the clamping groove (1221) and the rotating part (1211).
6. The spinal column dislocation reduction apparatus according to claim 5, wherein: the cross section of the rotating part (1211) is square, the cross section of the clamping groove (1221) is matched with the cross section of the rotating part (1211), and the outer side wall of the adjusting nut (122) is regular hexagon.
7. The spinal column dislocation reduction apparatus according to claim 6, wherein: the long limit of fixed jack catch (2) deviates from one side of drive gear (121) is provided with latch B (225), center hasp (1) correspond the side of latch B (225) is provided with spacing buckle (13), spacing buckle (13) can restrict the minor face of fixed jack catch (2) to be close to the direction removal of dead lever (11).
8. The spinal column dislocation reduction apparatus according to claim 7, wherein: the middle part of the limiting buckle (13) is hinged to the central lock catch (1), a limiting spring is arranged at the hinged position of the limiting buckle (13), and two ends of the limiting spring are respectively propped against the limiting buckle (13) and the central lock catch (1), so that the propped end of the limiting buckle (13) is always clamped in the clamping tooth B (225);
the surface, far away from the short side of the fixed claw (2), of the clamping tooth B (225) is a vertical surface, and the axis of the long side of the fixed claw (2) is perpendicular to the vertical surface; one surface of the clamping tooth B (225) close to the short side of the fixed clamping jaw (2) is an inclined surface.
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| CN2904965Y (en) * | 2006-02-24 | 2007-05-30 | 杭州市萧山区中医院 | A spine internal fixation device and tool dedicated therefor |
| CN101836886A (en) * | 2009-03-16 | 2010-09-22 | 周小军 | Anatomical reduction brace |
| CN101912300B (en) * | 2009-09-29 | 2012-08-22 | 张强 | Multi-section device for fixing and imbedding vertebral pedicle screws used in minimally invasive thoracolumbar vertebrae fractures |
| DE102010041264A1 (en) * | 2010-09-23 | 2012-03-29 | Aces Gmbh | Dynamic stabilization device for the spine |
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| CN113768598A (en) * | 2021-09-17 | 2021-12-10 | 湖北省中医院 | Human bone malformation shape repair system |
| CN218356347U (en) * | 2022-07-20 | 2023-01-24 | 广东医科大学附属医院 | Repositor for posterior border fracture of thoracolumbar vertebra difficult to renature |
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