CN114652421A - Minimally invasive centrum lifting repositor - Google Patents
Minimally invasive centrum lifting repositor Download PDFInfo
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- CN114652421A CN114652421A CN202210124374.9A CN202210124374A CN114652421A CN 114652421 A CN114652421 A CN 114652421A CN 202210124374 A CN202210124374 A CN 202210124374A CN 114652421 A CN114652421 A CN 114652421A
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- 229910000831 Steel Inorganic materials 0.000 claims description 40
- 239000010959 steel Substances 0.000 claims description 40
- 230000007704 transition Effects 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 210000000988 bone and bone Anatomy 0.000 description 7
- 208000007103 Spondylolisthesis Diseases 0.000 description 6
- 230000009467 reduction Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 210000005036 nerve Anatomy 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 210000002385 vertebral artery Anatomy 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
- A61B17/56—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, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/885—Tools for expanding or compacting bones or discs or cavities therein
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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
- A61B17/56—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, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8866—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices for gripping or pushing bones, e.g. approximators
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- Orthopedic Medicine & Surgery (AREA)
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Abstract
The invention relates to the technical field of medical instruments, in particular to a minimally invasive vertebral body lifting repositor. The minimally invasive vertebral body lifting repositor comprises a connecting frame, a sliding assembly, a lifting assembly and a handle assembly, wherein the handle assembly capable of adjusting the angle is arranged outside the connecting frame; the inner cavity of the connecting frame is provided with a sliding assembly, the inner cavity of the sliding assembly can be connected with a first minimally invasive sleeve, and a first pedicle screw is installed at the lower end of the first minimally invasive sleeve; the inner cavity of the connecting frame is provided with a lifting assembly, the lifting assembly is positioned on one side of the sliding assembly, which is far away from the handle assembly, the inner cavity of the lifting assembly can be connected with a second minimally invasive sleeve, and the lower end of the second minimally invasive sleeve is provided with a second pedicle screw; when the handle assembly is pressed down, the lifting assembly can be lifted by taking the sliding assembly as a fulcrum. The invention has simple structural design and convenient use, and can flexibly and rapidly adjust the structure of the lifting repositor according to the distance between adjacent vertebral bodies of a patient and the slippage degree of the vertebral body of the patient.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a minimally invasive vertebral body lifting repositor.
Background
The spondylolisthesis dislocation is more common orthopedic clinical reduction performance, and the tissue tension caused by dislocation compression nerve or spinal instability is too large, so that severe pain is brought to a patient, and the spondylolisthesis and the correction of the spinal column are established at the anatomical position of the recovered displaced spondylolisthesis, the internal and external balance of the spinal column relieves the peripheral pressure of the spinal column, so that the spinal column adapts to the peripheral muscle group, the compression of the spondylolisthesis to the nerve root is relieved, and the reduction treatment operation on the basis of vertebral artery blood flow is improved.
Chinese patent application CN112206046A discloses a novel centrum carries and draws reset system, including being used for fixing the fixed frame mechanism in operation bed body both sides, be used for the holding bone mechanism of centre gripping slippage centrum both ends transverse process to and be used for adjusting the lift adjustment canceling release mechanical system who holds bone mechanism, lift adjustment canceling release mechanical system's both ends respectively with fixed frame mechanism with hold bone mechanism be assembled between/be connected between, and adjust the height that holds bone mechanism through lift adjustment canceling release mechanical system, after holding the transverse process at bone mechanism centre gripping slippage centrum both ends, lock and hold bone mechanism, and by lift adjustment canceling release mechanical system promotes holding bone mechanism together with the centrum of centre gripping in step, realizes carrying of slippage centrum and draws the reduction. The invention can directly pull the transverse processes at the two ends of the spondylolisthesis to achieve the aim of restoring the spondylolisthesis, and replaces the restoration by using pedicle screws in the prior art.
However, such existing taper body lifting reduction devices have a number of disadvantages, such as: the structure design is huge and complicated, the operation is inconvenient, and the structure of the vertebral body lifting repositor can not be flexibly adjusted according to the vertebral body structures of different patients.
Disclosure of Invention
The invention aims to provide a minimally invasive vertebral body lifting repositor, which overcomes the defects of the prior art, has simple structural design and convenient use, and can flexibly and quickly adjust the structure of the lifting repositor according to the distance between adjacent vertebral body parts of a patient and the slippage degree of the vertebral body of the patient.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a minimally invasive vertebral body lifting restorer comprises a connecting frame, a sliding assembly, a lifting assembly and a handle assembly, wherein:
a handle assembly capable of adjusting the angle is arranged outside the connecting frame, and the angle between the handle assembly and the connecting frame is adjusted according to the slipping severity of the vertebral body;
the inner cavity of the connecting frame is provided with a sliding assembly, the inner cavity of the sliding assembly can be connected with a first minimally invasive sleeve, a first pedicle screw is installed at the lower end of the first minimally invasive sleeve, and the first pedicle screw is driven into a vertebral body on one side of the slipped vertebral body;
the inner cavity of the connecting frame is provided with a lifting component, the lifting component is positioned on one side of the sliding component, which is far away from the handle component, the inner cavity of the lifting component can be connected with a second minimally invasive sleeve, the lower end of the second minimally invasive sleeve is provided with a second pedicle screw, and the second pedicle screw is driven into a slipped vertebral body;
when the vertebral body resetting device is used, the sliding assembly is used as a fulcrum, the handle assembly is pressed down, the lifting assembly can be lifted up according to the lever principle, and then the slipped vertebral body is lifted up, so that the slipped vertebral body is reset smoothly.
Further, the link includes preceding frame plate, back frame plate and is used for connecting the side frame plate of preceding frame plate and back frame plate, all seted up the centre gripping hole on preceding frame plate and the back frame plate, the buffer hole has all been seted up to the top and the below in centre gripping hole, and the sliding component installs in the centre gripping hole, and can remove to another centre gripping hole by a centre gripping hole when receiving the external force pulling in, according to the interval of the adjacent centrum of patient, adjusts the sliding component to suitable position.
Further, the last edge and the lower edge of centre gripping hole are symmetrical continuous arc, the buffer hole of centre gripping hole top is with the last edge shape matched with continuous arc of centre gripping hole, the buffer hole of centre gripping hole below is with the lower edge shape matched with continuous arc of centre gripping hole, form a plurality of circular arc holes between the last edge and the lower edge of centre gripping hole, the slip subassembly centre gripping is in one of them circular arc hole, when the position of slip subassembly needs to be adjusted, promote the slip subassembly, current circular arc hole is pushed and is expanded, the buffer hole plays the cushioning effect to the expansion in circular arc hole, the slip subassembly gets into another adjacent circular arc hole smoothly, when not receiving external force to promote, the circular arc hole can grasp the slip subassembly.
Furthermore, the sliding assembly comprises a sliding sleeve and a sliding nail, an inner cavity of the sliding sleeve is connected with the upper end of the first minimally invasive sleeve, guide pillars are arranged on the front end face and the rear end face of the outer wall of the sliding sleeve, the guide pillars are clamped in one of arc holes formed in the upper edge and the lower edge of the clamping hole, threaded holes are formed in the guide pillars along the axis, the sliding nail is connected in the threaded holes in a limiting mode, the sliding sleeve and the connecting piece are connected in a limiting mode through the sliding nail, the sliding sleeve can rotate along the axis of the guide pillars, and the sliding sleeve can move downwards in the arc holes along with the guide pillars when pulled by external force.
Furthermore, the inner cavity of the sliding sleeve is provided with a first limiting block matched with a limiting through groove of the first minimally invasive sleeve and a second limiting block used for limiting the top of the sliding sleeve, and the first limiting block and the second limiting block are mainly used for protecting the first minimally invasive sleeve, so that the first minimally invasive sleeve is prevented from deforming in the lifting and resetting process and the use of the first minimally invasive sleeve is prevented from being influenced.
Further, it draws the subassembly to include to draw set, rotatory round pin, spacing ring, first spring, steel ball and the ring of drawing, wherein:
the front end face and the rear end face of the upper end of the lifting sleeve are provided with pin holes, the front frame plate and the rear frame plate of the connecting frame are in threaded connection with rotating pins, the tail ends of the rotating pins penetrate through the pin holes, the connecting frame is connected with the upper end of the lifting sleeve through the rotating pins, the middle lower part of the outer wall of the lifting sleeve is provided with an outer edge, an opening communicated with the inner cavity of the lifting sleeve is formed in the outer edge, the position of the opening corresponds to the position of a long circular hole in the pipe wall of the second minimally invasive sleeve, and the bottom of the outer wall of the lifting sleeve is provided with threads;
the limiting ring is in threaded connection with the bottom of the lifting sleeve, the limiting ring and the outer portion of the lower end of the lifting sleeve are movably sleeved with a lifting ring, a limiting ring hole, a transition hole, a steel ball containing hole and a steel ball pushing hole are formed in the inner cavity of the lifting ring from bottom to top, the shape and the size of the limiting ring hole are matched with those of the limiting ring, the diameter of the transition hole is smaller than that of the limiting ring hole, the distance between the inner wall of the steel ball containing hole and the outer wall of the lifting sleeve is larger than or equal to that of a steel ball, and the distance between the inner wall of the steel ball pushing hole and the inner wall of the lifting sleeve is smaller than or equal to that of the steel ball;
the steel ball is positioned in the open hole, the steel ball is connected with the upper end of the first spring, the lower end of the first spring is positioned in the steel ball accommodating hole, the first spring is in a compressed state, when the limiting ring hole of the lifting ring is sleeved on the limiting ring, the steel ball is pushed into the long round hole of the second minimally invasive sleeve by the inner wall of the steel ball pushing hole, the lifting sleeve and the lower end are connected with the second minimally invasive sleeve through the steel ball, the second minimally invasive sleeve is conveniently lifted when the handle assembly is pressed downwards, and then the slippage cone body connected with the second pedicle screw at the lower end of the second minimally invasive sleeve is lifted.
Furthermore, the inner wall of the lifting sleeve is provided with a third limiting block matched with a limiting through groove of the second minimally invasive sleeve, and the second limiting block is used for protecting the second minimally invasive sleeve from deforming in the process of lifting and slipping the centrum.
Furthermore, the handle assembly comprises an adjusting tooth, a handle rod, a sliding pin, a second spring and a positioning pin, the adjusting tooth is fixed on the connecting frame, continuous teeth are arranged on the outer edge of the adjusting tooth, a group of lug plates are symmetrically arranged at the starting end of the handle rod and hinged with the adjusting tooth, a groove is formed in the end face of the handle rod between the lug plates, one end of the second spring is fixed at the bottom of the groove, the other end of the second spring is connected with the positioning pin positioned in the groove, the end of the positioning pin extends out of the groove, the shape of the end part of the positioning groove is matched with the shape of two adjacent teeth of the adjusting tooth, sliding holes communicated with the groove are symmetrically formed in the handle rod, the pin rod of the sliding pin penetrates through the sliding holes and the positioning pin, the positioning pin is always inserted between the two adjacent teeth under the action of the second spring in the using process, and when the angle of the handle rod needs to be adjusted according to the living degree of a centrum, and pulling the sliding pin to one end far away from the adjusting tooth, enabling the positioning pin to be separated from the adjusting tooth, rotating the handle rod along the hinged end of the handle rod and the adjusting tooth, and retracting the sliding pin after rotating to a proper angle.
The invention has the beneficial effects that: compared with the prior art, the minimally invasive centrum lifting repositor has the following advantages: the structure design is simple, the operation is convenient, the sliding assembly is taken as a fulcrum, the handle assembly is pressed down, and according to the lever principle, the lifting assembly can be lifted up, so that the slipped vertebral body is lifted up, and the slipped vertebral body is reset smoothly; the position of the sliding component is flexibly adjusted according to the intervertebral distance of a patient, the sliding component is pushed during adjustment, the current arc hole where the sliding component is located is pushed and expanded, the buffer hole plays a role in buffering the expansion of the arc hole, the sliding component smoothly enters another adjacent arc hole, and the arc hole can clamp the sliding component when not pushed by external force; the positioning pin is inserted between two adjacent teeth all the time under the effect of second spring in the use, when the angle of handle bar needs to be adjusted according to centrum degree of freedom, to keeping away from the one end pulling sliding pin of adjusting the tooth, the positioning pin breaks away from adjusting the tooth, along handle bar and the rotatory handle bar of the articulated end of adjusting the tooth, back down the sliding pin after rotatory suitable angle can.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention in use;
FIG. 2 is a schematic view of another embodiment of the present invention;
FIG. 3 is an enlarged view of the structure of the connecting frame of the present invention;
FIG. 4 is an enlarged view of the sliding assembly of the present invention;
FIG. 5 is an enlarged view of another angular configuration of the sliding assembly of the present invention;
FIG. 6 is an enlarged view of the structure of the lifting assembly and a second minimally invasive sleeve of the present invention after installation;
FIG. 7 is an enlarged view of the structure of a pull assembly of the present invention;
FIG. 8 is a side view of a pull assembly of the present invention;
FIG. 9 is a cross-sectional view of the structure A-A' of FIG. 8 according to the present invention;
FIG. 10 is a schematic view of the handle assembly of the present invention;
FIG. 11 is a cross-sectional view of the structure B-B' of FIG. 10;
the connecting frame 1, the front frame plate 101, the rear frame plate 102, the side frame plate 103, the clamping hole 104, the buffer hole 105, the sliding component 2, the sliding sleeve 201, the sliding nail 202, the guide pillar 203, the first limiting block 204, the second limiting block 205, the lifting component 3, the lifting sleeve 301, the rotating pin 302, the limiting ring 303, the first spring 304, the steel ball 305, the lifting ring 306, the limiting ring hole 307, the transition hole 308, the steel ball accommodating hole 309, the steel ball pushing hole 310, the third limiting block 311, the handle component 4, the adjusting tooth 401, the handle rod 402, the sliding pin 403, the second spring 404, the positioning pin 405, the tooth 406, the groove 407, the sliding hole 408, the first minimally invasive sleeve 5, the first pedicle screw 6, the second minimally invasive sleeve 7, the slotted hole 5701 and the second pedicle screw 8.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
In the embodiment shown in fig. 1-11, a minimally invasive centrum lifting repositor comprises a connecting frame 1, a sliding assembly 2, a lifting assembly 3 and a handle assembly 4, wherein:
a handle component 4 capable of adjusting the angle is arranged outside the connecting frame 1, and the angle between the handle component 4 and the connecting frame 1 is adjusted according to the slipping severity of the vertebral body;
the inner cavity of the connecting frame 1 is provided with a sliding component 2, the inner cavity of the sliding component 2 can be connected with a first minimally invasive sleeve 5, a first pedicle screw 6 is installed at the lower end of the first minimally invasive sleeve 5, and the first pedicle screw 6 is driven into a vertebral body on one side of the slipped vertebral body;
the inner cavity of the connecting frame 1 is provided with a lifting component 3, the lifting component 3 is positioned on one side of the sliding component 2, which is far away from the handle component 4, the inner cavity of the lifting component 3 can be connected with a second minimally invasive sleeve 7, the lower end of the second minimally invasive sleeve 7 is provided with a second pedicle screw 8, and the second pedicle screw 8 is driven into a slipped vertebral body;
when the vertebral body restoration device is used, the sliding component 2 is used as a fulcrum, the handle component 4 is pressed downwards, the component 3 can be lifted up and pulled up according to the lever principle, and then the slipped vertebral body is lifted up, so that the slipped vertebral body is restored smoothly.
In this embodiment, the connecting frame 1 includes a front frame plate 101, a rear frame plate 102 and a side frame plate 103 for connecting the front frame plate 101 and the rear frame plate 102, clamping holes 104 have been all seted up on the front frame plate 101 and the rear frame plate 102, buffer holes 105 have all been seted up above and below the clamping holes 104, the sliding component 2 is installed in the clamping holes 104, and can move to another clamping hole 104 from one clamping hole 104 when being pulled by an external force, and the sliding component 2 is adjusted to a suitable position according to the distance between adjacent vertebral bodies of a patient.
In this embodiment, the last edge and the lower edge of centre gripping hole 104 are symmetrical continuous arc, the buffer hole 105 of centre gripping hole 104 top is the continuous arc of shape matched with along the last of centre gripping hole 104, the buffer hole 105 of centre gripping hole 104 below is the continuous arc of shape matched with along the lower of centre gripping hole 104, form a plurality of circular arc holes between the last edge of centre gripping hole 104 and the lower edge, sliding component 2 centre gripping is in one of them circular arc hole, when the position of sliding component 2 is adjusted to needs, promote sliding component 2, current circular arc hole is pushed the expansion, buffer hole 105 plays the cushioning effect to the expansion in circular arc hole, sliding component 2 gets into in another adjacent circular arc hole smoothly, when not receiving external force to promote, the circular arc hole can grasp sliding component 2.
In this embodiment, the sliding assembly 2 includes a sliding sleeve 201 and a sliding nail 202, an inner cavity of the sliding sleeve 201 is connected with the upper end of the first minimally invasive sleeve 5, the front end face and the rear end face of the outer wall of the sliding sleeve 201 are both provided with a guide pillar 203, the guide pillar 203 is clamped in one of arc holes formed on the upper edge and the lower edge of the clamping hole 104, the guide pillar 203 is provided with a threaded hole along the axis, the sliding nail 202 is connected with the threaded hole in a threaded manner, the sliding sleeve 201 and the connecting piece are connected in a limiting manner through the sliding nail 202, so that the sliding sleeve 201 can rotate along the axis of the guide pillar 203, and the sliding sleeve 201 can move into the arc hole downwards along with the guide pillar 203 when being pulled by an external force.
In this embodiment, the inner cavity of the sliding sleeve 201 is provided with a first limiting block 204 matched with the limiting through groove of the first minimally invasive sleeve 5 and a second limiting block 205 used for limiting the top of the sliding sleeve 201, and the first limiting block 204 and the second limiting block 205 are mainly used for protecting the first minimally invasive sleeve 5, so that the first minimally invasive sleeve 5 is prevented from being deformed in the lifting and resetting process, and the use of the first minimally invasive sleeve 5 is prevented from being influenced.
In this embodiment, the lifting assembly 3 includes a lifting sleeve 301, a rotating pin 302, a limiting ring 303, a first spring 304, a steel ball 305, and a lifting ring 306, wherein:
the front end face and the rear end face of the upper end of the lifting sleeve 301 are both provided with pin holes, the front frame plate 101 and the rear frame plate 102 of the connecting frame 1 are both in threaded connection with a rotating pin 302, the tail end of the rotating pin 302 penetrates through the pin holes, the connecting frame 1 is connected with the upper end of the lifting sleeve 301 through the rotating pin 302, the middle lower part of the outer wall of the lifting sleeve 301 is provided with an outer edge, the outer edge is provided with an opening hole communicated with the inner cavity of the lifting sleeve 301, the position of the opening hole corresponds to the position of the long round hole 5701 in the pipe wall of the second minimally invasive sleeve, and the bottom of the outer wall of the lifting sleeve 301 is provided with threads;
the limiting ring 303 is in threaded connection with the bottom of the lifting sleeve 301, the limiting ring 303 and the outer part of the lower end of the lifting sleeve 301 are movably sleeved with a lifting ring 306, an inner cavity of the lifting ring 306 is provided with a limiting ring hole 307, a transition hole 308, a steel ball containing hole 309 and a steel ball pushing hole 310 from bottom to top, the shape and the size of the limiting ring hole 307 are matched with those of the limiting ring 303, the diameter of the transition hole 308 is smaller than that of the limiting ring hole 307, the distance between the inner wall of the steel ball containing hole 309 and the outer wall of the lifting sleeve 301 is larger than or equal to that of a steel ball, and the distance between the inner wall of the steel ball pushing hole and the inner wall of the lifting sleeve 301 is smaller than or equal to that of the steel ball;
the steel balls are located in the open holes and connected with the upper end of the first spring 304, the lower end of the first spring 304 is located in the steel ball accommodating hole 309, the first spring 304 is in a compressed state, when the limiting ring hole 307 of the lifting ring 306 is sleeved on the limiting ring 303, the inner wall of the steel ball pushing hole 310 pushes the steel balls into the long circular hole 5701 of the second minimally invasive sleeve 7, the lifting sleeve 301 and the lower end are connected with the second minimally invasive sleeve through the steel balls, the second minimally invasive sleeve is conveniently lifted when the handle assembly is pressed downwards, and then the slipping vertebral body connected with the second pedicle screw 8 at the lower end of the second minimally invasive sleeve is lifted.
In this embodiment, the inner wall of the pulling sleeve 301 is provided with a third limiting block 311 matched with the limiting through groove of the second minimally invasive sleeve 7, and the third limiting block 311 is used for protecting the second minimally invasive sleeve 7 from deforming in the process of pulling and slipping the vertebral body.
In this embodiment, the handle assembly 4 includes an adjusting tooth 401, a handle bar 402, a sliding pin 403, a second spring 404 and a positioning pin 405, the adjusting tooth 401 is fixed on the connecting frame 1, the outer edge of the adjusting tooth 401 is provided with continuous teeth 406, the beginning end of the handle bar 402 is symmetrically provided with a set of ear plates, the ear plates are hinged to the adjusting tooth 401, a concave groove 407 is formed on the end surface of the handle bar 402 between the ear plates, one end of the second spring 404 is fixed at the bottom of the concave groove 407, the other end of the second spring 404 is connected with the positioning pin 405 located inside the concave groove 407, the end of the positioning pin 405 extends out of the concave groove 407, the end of the positioning groove is matched with the shape between two adjacent teeth 406 of the adjusting tooth 401, the handle bar 402 is symmetrically provided with sliding holes 408 communicated with the concave groove 407, the pin bar of the sliding pin 403 passes through the sliding holes 408 and the positioning pin 405, the positioning pin 405 is inserted between two adjacent teeth 406 under the action of the second spring 404 during use, when the angle of the handle lever 402 is required to be adjusted according to the degree of the vertebral body detachment, the sliding pin 403 is pulled towards one end far away from the adjusting tooth 401, the positioning pin 405 is detached from the adjusting tooth 401, the handle lever 402 is rotated along the hinged end of the handle lever 402 and the adjusting tooth 401, and the sliding pin 403 is retracted after the handle lever is rotated to a proper angle.
The above embodiments are only specific examples of the present invention, and the scope of the present invention includes but is not limited to the product forms and styles of the above embodiments, and any suitable changes or modifications made by those skilled in the art according to the claims of the present invention should fall within the scope of the present invention.
Claims (8)
1. A minimally invasive vertebral body lifting repositor is characterized in that: including link, slip subassembly, carry and pull up subassembly and handle assembly, wherein:
a handle assembly capable of adjusting the angle is arranged outside the connecting frame;
the inner cavity of the connecting frame is provided with a sliding assembly, the inner cavity of the sliding assembly can be connected with a first minimally invasive sleeve, and the lower end of the first minimally invasive sleeve is provided with a first pedicle screw;
the inner cavity of the connecting frame is provided with a lifting assembly, the lifting assembly is positioned on one side of the sliding assembly, which is far away from the handle assembly, the inner cavity of the lifting assembly can be connected with a second minimally invasive sleeve, and the lower end of the second minimally invasive sleeve is provided with a second pedicle screw;
when the handle assembly is pressed down, the lifting assembly can be lifted up by taking the sliding assembly as a fulcrum.
2. The minimally invasive vertebral body lifting repositor according to claim 1, wherein: the link includes preceding frame plate, back frame plate and is used for connecting the side frame plate of preceding frame plate and back frame plate, all seted up the centre gripping hole on preceding frame plate and the back frame plate, the buffer hole has all been seted up to the top and the below in centre gripping hole, and the slip subassembly is installed in the centre gripping hole, and can remove to another centre gripping hole by a centre gripping hole when receiving the external force pulling.
3. The minimally invasive vertebral body lifting repositor according to claim 2, wherein: the upper edge and the lower edge of the clamping hole are in a symmetrical continuous arc shape, the buffer hole above the clamping hole is in a continuous arc shape matched with the shape of the upper edge of the clamping hole, and the buffer hole below the clamping hole is in a continuous arc shape matched with the shape of the lower edge of the clamping hole.
4. The minimally invasive vertebral body lifting repositor according to any one of claims 3, wherein: the sliding assembly comprises a sliding sleeve and a sliding nail, an inner cavity of the sliding sleeve is connected with the upper end of the first minimally invasive sleeve, guide pillars are arranged on the front end face and the rear end face of the outer wall of the sliding sleeve, the guide pillars are clamped in one of arc holes formed in the upper edge and the lower edge of the clamping hole, threaded holes are formed in the guide pillars along the axis, and the sliding nail is connected with the inner threads of the threaded holes.
5. The minimally invasive vertebral body lifting repositor according to any one of claims 4, wherein: the inner cavity of the sliding sleeve is provided with a first limiting block matched with the limiting through groove of the first minimally invasive sleeve and a second limiting block used for limiting the top of the sliding sleeve.
6. The minimally invasive vertebral body lifting repositor according to claim 2, wherein: the lifting assembly comprises a lifting sleeve, a rotating pin, a limiting ring, a first spring, a steel ball and a lifting ring, wherein:
the front end face and the rear end face of the upper end of the lifting sleeve are both provided with pin holes, the front frame plate and the rear frame plate of the connecting frame are both in threaded connection with rotating pins, the tail ends of the rotating pins penetrate through the pin holes, the middle lower part of the outer wall of the lifting sleeve is provided with an outer edge, the outer edge is provided with an opening communicated with an inner cavity of the lifting sleeve, the position of the opening corresponds to the position of a long circular hole in the pipe wall of the second minimally invasive sleeve, and the bottom of the outer wall of the lifting sleeve is provided with threads;
the limiting ring is in threaded connection with the bottom of the lifting sleeve, the limiting ring and the outer portion of the lower end of the lifting sleeve are movably sleeved with a lifting ring, a limiting ring hole, a transition hole, a steel ball containing hole and a steel ball pushing hole are formed in the inner cavity of the lifting ring from bottom to top, the shape and the size of the limiting ring hole are matched with those of the limiting ring, the diameter of the transition hole is smaller than that of the limiting ring hole, the distance between the inner wall of the steel ball containing hole and the outer wall of the lifting sleeve is larger than or equal to that of a steel ball, and the distance between the inner wall of the steel ball pushing hole and the inner wall of the lifting sleeve is smaller than or equal to that of the steel ball;
the steel ball is arranged in the open hole, the steel ball is connected with the upper end of the first spring, the lower end of the first spring is arranged in the steel ball accommodating hole, the first spring is in a compressed state, and when the limiting ring hole of the lifting ring is sleeved on the limiting ring, the steel ball is pushed into the long round hole of the second minimally invasive sleeve by the inner wall of the steel ball pushing hole.
7. The minimally invasive vertebral body lifting repositor of claim 6, wherein: and a third limiting block matched with the limiting through groove of the second minimally invasive sleeve is arranged on the inner wall of the lifting sleeve.
8. The minimally invasive vertebral body lifting repositor according to claim 1, wherein: the handle assembly is including adjusting tooth, handle pole, sliding pin, second spring and locating pin, on adjusting the tooth and being fixed in the link, the outer edge of adjusting the tooth is provided with continuous tooth, the top symmetry of handle pole is provided with a set of otic placode, and the otic placode is articulated with the regulation tooth, offers flutedly on the handle pole terminal surface between the otic placode, and the one end of second spring is fixed in the bottom of recess, and the other end is connected with the locating pin that is located recess inside, and the end of locating pin stretches out from the recess, and the shape of the tip of constant head tank cooperatees with the shape between the two adjacent tooth of regulation tooth, the symmetry is provided with the slip hole with the recess intercommunication on the handle pole, and the pin pole of sliding pin passes slip hole and locating pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210124374.9A CN114652421B (en) | 2022-02-10 | 2022-02-10 | Minimally invasive centrum lifting and resetting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210124374.9A CN114652421B (en) | 2022-02-10 | 2022-02-10 | Minimally invasive centrum lifting and resetting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114652421A true CN114652421A (en) | 2022-06-24 |
| CN114652421B CN114652421B (en) | 2024-06-14 |
Family
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| CN202210124374.9A Active CN114652421B (en) | 2022-02-10 | 2022-02-10 | Minimally invasive centrum lifting and resetting device |
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| CN112206046A (en) * | 2020-11-16 | 2021-01-12 | 汤雪明 | Novel centrum lifting and resetting system |
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| US20050245928A1 (en) * | 2004-05-03 | 2005-11-03 | Innovative Spinal Technologies | System and method for displacement of bony structures |
| CN202146354U (en) * | 2011-05-30 | 2012-02-22 | 陈建庭 | Spondylolisthesis lift reductor and spondylolisthesis lift reduction device |
| DE102012101780A1 (en) * | 2012-03-02 | 2013-09-05 | Aesculap Ag | Reposition device i.e. lever instrument, for spondylolisthesis-reposition instrument for use in spinal column of patient, has bolt-like mounting aid detachably carrying set screw to be placed in tulip of pedicle screws at end section |
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| CN109771106A (en) * | 2019-03-13 | 2019-05-21 | 杨进城 | Oral preceding road atlas and axis Lateral mass joint resetting fusion device system and its application method |
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| CN112206046A (en) * | 2020-11-16 | 2021-01-12 | 汤雪明 | Novel centrum lifting and resetting system |
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| CN114652421B (en) | 2024-06-14 |
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