CN107485436B - Spinous process fusion steel plate fixing system capable of being opened - Google Patents
Spinous process fusion steel plate fixing system capable of being opened Download PDFInfo
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- CN107485436B CN107485436B CN201710796041.XA CN201710796041A CN107485436B CN 107485436 B CN107485436 B CN 107485436B CN 201710796041 A CN201710796041 A CN 201710796041A CN 107485436 B CN107485436 B CN 107485436B
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- spinous process
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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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
-
- 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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7044—Screws or hooks combined with longitudinal elements which do not contact vertebrae also having plates, staples or washers bearing on the vertebrae
-
- 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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7059—Cortical plates
-
- 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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
- A61B17/7067—Devices bearing against one or more spinous processes and also attached to another part of the spine; Tools therefor
-
- 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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone 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, 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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8004—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones
-
- 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
- A61B2017/564—Methods for bone or joint treatment
Abstract
The invention relates to the technical field of medical instrument manufacturing, in particular to a steel plate fixing system capable of expanding spinous processes, which is characterized by comprising a left spinous process fixing plate, a right spinous process fixing plate and a gradual-change expanding mechanism, wherein the middle part of the left spinous process fixing plate is provided with a left guide square hole, the left spinous process fixing plate outside the left guide square hole is provided with a positioning plate, the middle part of the positioning plate is provided with a locking hole, the middle part of the right spinous process fixing plate is provided with a right guide square hole, the side surface of the right spinous process fixing plate is provided with a locking screw hole, a locking bolt is arranged in the locking screw hole, the gradual-change expanding mechanism consists of an upper supporting plate, a lower supporting plate, a left expanding block, a right expanding block and a rotating screw rod, and the left expanding block simultaneously moves outwards under the action of reverse threads of the rotating screw rod, so that the expansion between the upper supporting plate and the lower supporting plate is realized, and the expansion between spinous processes is simple in structure, convenient to use, continuous expansion of the distance between the spinous processes, good treatment effect, pain relief of patients and the like.
Description
Technical Field
The invention relates to the technical field of medical instrument manufacturing, in particular to a steel plate fixing system capable of expanding spinous processes, which has the advantages of simple structure, convenience in use, good treatment effect and pain relief for patients, and can continuously expand the distance between spinous processes of intervertebral foramen.
Background
As is well known, prolapse of lumbar intervertebral disc is a common and frequently occurring disease of orthopaedics, and is also one of the most common causes of lumbago and skelalgia clinically. Lumbar disc herniation is mainly caused by disc degeneration, rupture of annulus fibrosus and herniated nucleus pulposus tissues, and a series of clinical symptoms and signs caused by pressing and stimulating nerve roots and cauda equina nerves, and a light person can cause radioactive pain, numbness and muscle strength change of one limb of a patient, and a heavy person can cause irreversible limb movement and sensory disturbance of the patient, even cause urination and sexual dysfunction, and seriously affect the life quality and life span of the patient.
At present, in order to solve the problem of the spine, the design concept of the interspinous metal spreader for clinical application or test requires that the interspinous spreader and the upper spinous process and the lower spinous process keep a certain degree of mobility, but the design can increase the mobility of lumbar vertebrae, but because the stress between the lumbar spinous process and the internal fixator after operation and the elastic modulus of metal built-in objects and host bones are not matched, especially for old osteoporosis patients, the interspinous fracture can be caused, even the rare articular fracture is caused, the operation is failed, the interspinous internal fixator needs to be taken out by operation, finally, the non-fusion operation is changed into the fusion operation, especially in the process of implanting the spreader into the interspinous, the fusion device is in a structure with a specific spreading size, the fusion device is implanted into the structure with the spreading distance larger than the size of the fusion device, and then secondary damage is possibly caused to the spine, especially, the distance between the spinous processes after installation is spread by a specific size, and the fusion device cannot be adjusted according to practical conditions.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides the expandable spinous process fusion steel plate fixing system which has the advantages of simple structure, convenient use, good treatment effect and pain relief for patients, and can continuously enlarge the distance between spinous processes of intervertebral foramen.
The technical scheme adopted for solving the technical problems is as follows:
the system is characterized by comprising a left spinous process fixing plate, a right spinous process fixing plate and a gradual change opening mechanism, wherein the middle part of the left spinous process fixing plate is provided with a left guide square hole, the left spinous process fixing plate at the outer side of the left guide square hole is provided with a positioning plate, the middle part of the positioning plate is provided with a locking hole, two ends of the left spinous process fixing plate are respectively provided with a steel needle, the middle part of the right spinous process fixing plate is provided with a right guide square hole which corresponds to the left guide square hole on the left spinous process fixing plate and is used for the gradual change opening mechanism to pass through, the side surface of the right spinous process fixing plate is provided with a locking screw hole, the locking screw hole is internally provided with a locking bolt for locking the gradual change opening mechanism, two ends of the right spinous process fixing plate are respectively provided with a steel needle, the gradual change opening mechanism consists of an upper supporting plate, a lower supporting plate, a left opening block, a right opening block and a rotary screw, the inner sides of the upper supporting plate and the lower supporting plate are symmetrically provided with supporting grooves, the two ends of each supporting groove are respectively provided with a guide wedge surface which is inclined from the two ends to the center, the two inner side end surfaces of the upper supporting plate and the lower supporting plate are respectively provided with a rotating screw rod penetrating groove communicated with the supporting grooves, the two ends of each supporting groove in the upper supporting plate and the lower supporting plate are respectively provided with a left supporting block and a right supporting block, the upper ends and the lower ends of the left supporting block and the right supporting block are respectively provided with sliding wedge surfaces matched with the guide wedge surfaces at the two ends of the supporting grooves, the middle parts of the left supporting block and the right supporting block are provided with threaded holes for the rotating screw rods to penetrate, the threaded holes are provided with rotating screw rods, one ends of the rotating screw rods penetrate through locking holes in the middle parts of positioning plates on the left spinous fixing plates and are connected with locking nuts, and the other ends of the rotating screw rods sequentially penetrate through the left rotating screw rods penetrating grooves, the left supporting blocks, the right stretching block and the right side rotating screw rod penetrate through the groove and are provided with rotating heads, the left stretching block and the right stretching block are provided with threads which are opposite to each other and enable the left stretching block and the right stretching block to move outwards or inwards simultaneously, and the left stretching block and the right stretching block move outwards simultaneously under the action of the reverse threads of the rotating screw rod to stretch the upper stretching plate and the lower stretching plate and further stretch the spinous process gaps.
The front side and the rear side of the upper supporting plate are respectively provided with a guide groove plate, one end of each guide groove plate extends out of the upper supporting plate, the other end of each guide groove plate is parallel to the end face of the upper supporting plate, the front side and the rear side of each lower supporting plate are provided with guide plates matched with the guide groove plates, one end of each guide plate extends out of the lower supporting plate, the other end of each guide plate is connected with the corresponding lower supporting plate, and the guide plates and the guide groove plates are matched and slide to play a role in guiding and expanding.
The dovetail grooves are formed in the outer sides of the guide groove plates, dovetail bosses matched with the dovetail grooves are formed in the inner sides of the guide plates, the dovetail grooves extend to the bottoms of the inner supporting grooves of the lower supporting plates, and the upper supporting plates and the lower supporting plates are stably connected while being guided and supported.
The plant holes are arranged on the upper supporting plate and the lower supporting plate, so that the bone fusion material is implanted into the plant holes after the operation is completed, and the stability of the whole structure is improved.
The dovetail grooves are arranged on the guide wedge surfaces at the two ends of the inner supporting grooves of the upper supporting plate and the lower supporting plate, and dovetail bosses matched with the dovetail grooves are arranged on the sliding wedge surfaces on the left supporting block and the right supporting block, so that the stability of sliding and connection is ensured.
The inner sides of the two ends of the left spinous process fixing plate and the right spinous process fixing plate are respectively provided with at least six steel nails, each end of the left spinous process fixing plate and the right spinous process fixing plate is provided with at least three steel nails, and the three steel nails are not arranged on the same straight line, so that the connection stability of the left spinous process fixing plate and the right spinous process fixing plate and the spinous process is ensured.
The invention has the advantages of adopting the structure, and the like.
Drawings
FIG. 1 is a schematic view of an undeployed structure of the fastening system of the present invention.
Fig. 2 is a schematic view of the distraction structure of the fixation system of the present invention.
Fig. 3 is a schematic view of the structure of the left spinous process fixation plate according to the present invention.
Fig. 4 is a schematic view of the structure of the right spinous process fixation plate according to the present invention.
Fig. 5 is a schematic diagram of a minimum pitch structure of a progressive distraction mechanism in accordance with the present invention.
Fig. 6 is a schematic diagram of the maximum pitch structure of the gradual-change opening mechanism in the invention.
FIG. 7 is a schematic view of the upper support plate of FIG. 6
Fig. 8 is a schematic structural view of the left spreader block of fig. 6.
Fig. 9 is a schematic view of the structure of the right spreader block of fig. 6.
Fig. 10 is a schematic view of the structure of the rotary screw of fig. 6.
Fig. 11 is a schematic view of the lower stay plate structure of fig. 6.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in the drawing, the steel plate fixing system capable of expanding the spinous process fusion is characterized by comprising a left spinous process fixing plate 1, a right spinous process fixing plate 2 and a gradual expanding mechanism, wherein the middle part of the left spinous process fixing plate 1 is provided with a left guide square hole 3, the left spinous process fixing plate outside the left guide square hole 3 is provided with a positioning plate 4, the middle part of the positioning plate 4 is provided with a locking hole 5, two ends of the left spinous process fixing plate 1 are respectively provided with a steel needle 6, the middle part of the right spinous process fixing plate 2 is provided with a right guide square hole 7 which corresponds to the left guide square hole 3 on the left spinous process fixing plate 1 and is penetrated by the gradual expanding mechanism, the side surface of the right spinous process fixing plate 2 is provided with a locking screw hole 8, a locking bolt 9 for locking the gradual expanding mechanism is arranged in the locking screw hole 8, two ends of the right spinous process fixing plate 2 are respectively provided with the steel needles 6, the gradual change stretching mechanism consists of an upper stretching plate 10, a lower stretching plate 11, a left stretching block 12, a right stretching block 13 and a rotary screw 14, wherein stretching grooves 15 are symmetrically arranged at the inner sides of the upper stretching plate 10 and the lower stretching plate 11, guide wedge surfaces 16 which incline from the two ends to the center are respectively arranged at the two ends of the stretching grooves 15, rotary screw passing grooves 17 communicated with the stretching grooves 15 are respectively arranged at the two inner side end surfaces of the upper stretching plate 10 and the lower stretching plate 11, left stretching blocks 12 and right stretching blocks 13 are respectively arranged at the two ends of the stretching grooves 15 in the upper stretching plate 10 and the lower stretching plate 11, sliding wedge surfaces 18 matched with the guide wedge surfaces at the two ends of the stretching grooves 15 are respectively arranged at the upper ends and the lower ends of the left stretching blocks 12 and the right stretching blocks 13, threaded holes 19 through which the rotary screw passes are arranged at the middle parts of the left stretching blocks 12 and the right stretching blocks 13, rotary screws 14 are arranged in the threaded holes 19, one end of a rotary screw 14 passes through a locking hole 5 in the middle of a positioning plate 4 on a left spinous process fixing plate 1 and is connected with a locking nut 24, the other end of the rotary screw 14 sequentially passes through a left rotary screw passing groove 17, a left supporting block 12, a right supporting block 13 and a right rotary screw passing groove 17 and is provided with a rotary head 20, two sides of the rotary screw 14 are provided with threads which enable the left supporting block 12 and the right supporting block 13 to simultaneously move outwards or inwards and are mutually reversed, under the action of the reverse threads of the rotary screw 14, the left supporting block 12 and the right supporting block 13 simultaneously move outwards through rotation to realize the supporting of an upper supporting plate 10 and a lower supporting plate 11 so as to realize the supporting between spinous process gaps, the front side and the rear side of the upper supporting plate 10 are respectively provided with a guide groove plate 21, one end of the guide groove plate 21 extends out of the upper supporting plate 10, the other end of the guide groove plate 21 is flush with the end face of the upper supporting plate 10, the front and back sides of the lower supporting plate 11 are provided with guide plates 22 matched with the guide groove plates 21, one ends of the guide plates 22 extend out of the lower supporting plate 11, the other ends of the guide plates 22 are connected with the lower supporting plate 11, the guide plates 22 and the guide groove plates 21 are matched and slide to play a role in guiding and expanding, the outer sides of the guide groove plates 21 are provided with dovetail grooves, the inner sides of the guide plates 22 are provided with dovetail bosses matched with the dovetail grooves, the dovetail grooves extend to the bottoms of supporting grooves in the lower supporting plate 11, the upper supporting plate 10 and the lower supporting plate 11 are stably connected while guiding and expanding, plant holes 23 are formed in the upper supporting plate 10 and the lower supporting plate 11, bone fusion materials are implanted from the plant holes 23 after the operation expanding is completed, the stability of the whole structure is improved, grooves are formed in the guide wedge surfaces 16 at the two ends of the dovetail grooves in the upper supporting plate 10 and the lower supporting plate 11, the sliding wedge surfaces 18 on the left stretching block 12 and the right stretching block 13 are provided with dovetail bosses matched with dovetail grooves, so that the stability of sliding connection is guaranteed, at least six steel nails 6 are respectively arranged on the inner sides of two ends of the left spinous process fixing plate 1 and the right spinous process fixing plate 2, at least three steel nails 6 are arranged at each end of the left spinous process fixing plate 1 and the right spinous process fixing plate 2, and the three steel nails 6 are not arranged on the same straight line, so that the stability of connection between the left spinous process fixing plate 1 and the right spinous process fixing plate 2 and the spinous processes is guaranteed.
When the invention is used, the left spinous process fixing plate 1 and the gradual expanding mechanism are firstly placed between spinous process gaps to be expanded, then the locking nut 24 at the left end of the left spinous process fixing plate 1 is slightly rotated to enable the rotary screw 14 in the gradual expanding mechanism to rotate, then the rotary screw 14 is rotated to enable the left expanding block 12 and the right expanding block 13 in the gradual expanding mechanism to move outwards so as to further expand the upper supporting plate 10 and the lower supporting plate 11, and then two adjacent spinous processes are expanded, after expansion is completed, the locking nut 24 is locked to further fix the gradual expanding mechanism, then the right spinous process fixing plate 2 is sleeved on the gradual expanding mechanism from the right side, then the left spinous process fixing plate 1 and the right spinous process fixing plate 2 are pressed and fixed through a pressing machine, after the fixation is completed, the right spinous process fixing plate 2 is locked on the gradual expanding mechanism through the locking bolt 9 in the locking screw hole 8 on the right spinous process fixing plate 2, and then bone fusion materials are implanted inwards through the plant hole 23, and the whole spinous process expanding process is completed.
The spinous process posterior steel plate is divided into a left part and a right part, the left spinous process fixing plate 1 is connected with the gradual-change expanding mechanism at the middle position, so that the initial position in the intervention operation is facilitated, the gradual-change expanding mechanism and the position of the left spinous process fixing plate 1 are relatively unchanged through the position matching of the rotary screw 14 and the locking hole 5 on the positioning plate 4 in the left spinous process fixing plate 1, and the continuous change of the expanding size taking the central line of the rotary screw 14 as the center is ensured; the gradual change stretching mechanism can realize continuous size adjustment and reliably support the spatial position of the spinous process, the spinous process fixing plates on two sides of the gradual change stretching mechanism are provided with sharp steel needles 6, after pressurization, the spinous process fixing plates can be firmly nailed into the bottom of the spinous process to fix the sagittal plane displacement of the spinous process, the gradual change stretching mechanism in the middle can realize continuous change in height and support the spinous process and fuse under the rotation of the rotary screw 14, the right spinous process fixing plate 2 and the left spinous process fixing plate 1 are basically symmetrical and are in a separated state with the whole of the left spinous process fixing plate 1 and the gradual change stretching mechanism, the gradual change stretching mechanism penetrates through the hole to be matched with the left spinous process fixing plate 1 in the operation process, the rotary screw 14 in the middle is rotated, the left stretching block 12 and the right stretching block 13 matched with the gradual change stretching block are respectively translated to two sides under the action of the reverse threads, the left stretching block 12 and the right stretching block 13 are in wedge surface contact with the stretching groove 15, the left stretching block 12 and the right stretching block 13 move and push the upper supporting plate 10 and the lower supporting plate 11 to move up and down along the mutually matched plane pair, thus the rotary screw 14 is enabled to move up and down along the mutually matched plane pair, the rotation of the upper supporting plate 10 and the two sides of the supporting plate can be firmly locked by the tool, and the two sides of the spinous process fixing plate can be firmly locked and fixed by the locking the two sides of the supporting plate are fastened.
The fixing system is a non-pedicle screw auxiliary fusion fixing instrument which is implanted between spinous processes by a minimally invasive method, a fusion steel plate is fixedly attached to the spinous processes of the spinal column through small incisions at the positions of fusion sections of the posterior approach of the spinal column, the damage to the strainary tissue structure of the spinal column is extremely small, the bleeding is less, the risk of damage to spinal cords and nerve tissues is extremely low, the operation technology is safe and simple, the repair is easy, the device such as the fusion steel plate is usually implanted between the fusion steel plates in the operation, the fusion steel plate between the spinous processes is generally only used for the spinal column of a single-segment non-cervical-segment, along with the maturity and diffusion of the technology, the clinical indication is also continuously enlarged, a plurality of clinical use cases are overlapped and installed on the segments, the fixing system is usually used in combination with lumbar anterior approach fusion, lumbar posterior approach fusion, lumbar foramen access fusion and lumbar lateral approach fusion, the internal fixation of the pedicle screw of the posterior approach of the lumbar column is completely and partially replaced, the fixing system has the effect of fusion fixing the spinous processes in the body in principle, the fixing system can be substantially spread in the body, thus the effect of a continuous in vivo, the effect of fixing the vertebral disc can be achieved, the effect of the cervical stenosis can be relieved, the cervical stenosis can be achieved, the cervical stenosis can be easily and the cervical stenosis can be relieved, the cervical stenosis can be easily, and the cervical stenosis can be used and the cervical, and the cervical system can be used and the cervical.
Claims (6)
1. The system is characterized by comprising a left spinous process fixing plate, a right spinous process fixing plate and a gradual change opening mechanism, wherein the middle part of the left spinous process fixing plate is provided with a left guide square hole, the left spinous process fixing plate at the outer side of the left guide square hole is provided with a positioning plate, the middle part of the positioning plate is provided with a locking hole, two ends of the left spinous process fixing plate are respectively provided with a steel needle, the middle part of the right spinous process fixing plate is provided with a right guide square hole which corresponds to the left guide square hole on the left spinous process fixing plate and is used for the gradual change opening mechanism to pass through, the side surface of the right spinous process fixing plate is provided with a locking screw hole, the locking screw hole is internally provided with a locking bolt for locking the gradual change opening mechanism, two ends of the right spinous process fixing plate are respectively provided with a steel needle, the gradual change opening mechanism consists of an upper supporting plate, a lower supporting plate, a left opening block, a right opening block and a rotary screw, the inner sides of the upper supporting plate and the lower supporting plate are symmetrically provided with supporting grooves, the two ends of each supporting groove are respectively provided with a guide wedge surface which is inclined from the two ends to the center, the two inner side end surfaces of the upper supporting plate and the lower supporting plate are respectively provided with a rotating screw rod penetrating groove communicated with the supporting grooves, the two ends of each supporting groove in the upper supporting plate and the lower supporting plate are respectively provided with a left supporting block and a right supporting block, the upper ends and the lower ends of the left supporting block and the right supporting block are respectively provided with sliding wedge surfaces matched with the guide wedge surfaces at the two ends of the supporting grooves, the middle parts of the left supporting block and the right supporting block are provided with threaded holes for the rotating screw rods to penetrate, the threaded holes are provided with rotating screw rods, one ends of the rotating screw rods penetrate through locking holes in the middle parts of positioning plates on the left spinous fixing plates and are connected with locking nuts, and the other ends of the rotating screw rods sequentially penetrate through the left rotating screw rods penetrating grooves, the left supporting blocks, the right stretching block and the right side rotating screw rod penetrate through the groove and are provided with rotating heads, the left stretching block and the right stretching block are provided with threads which are opposite to each other and enable the left stretching block and the right stretching block to move outwards or inwards simultaneously, and the left stretching block and the right stretching block move outwards simultaneously under the action of the reverse threads of the rotating screw rod to stretch the upper stretching plate and the lower stretching plate and further stretch the spinous process gaps.
2. The system for fixing the expandable spinous process fusion steel plate according to claim 1, wherein the front side and the rear side of the upper supporting plate are respectively provided with a guide groove plate, one end of each guide groove plate extends out of the upper supporting plate, the other end of each guide groove plate is flush with the end face of the upper supporting plate, the front side and the rear side of the lower supporting plate are provided with guide plates matched with the guide groove plates, one end of each guide plate extends out of the lower supporting plate, the other end of each guide plate is connected with the lower supporting plate, and the guide plates and the guide groove plates are matched and slide to play a role in guiding and expanding.
3. The system for fixing the expandable spinous process fusion steel plate according to claim 2, wherein a dovetail groove is arranged on the outer side of the guide groove plate, a dovetail boss matched with the dovetail groove is arranged on the inner side of the guide plate, the dovetail groove extends to the bottom of an inner supporting groove of the lower supporting plate, and the upper supporting plate and the lower supporting plate are stably connected while being guided and expanded.
4. The system for fixing the expandable spinous process fusion steel plate according to claim 1, wherein plant holes are formed in the upper supporting plate and the lower supporting plate, so that bone fusion materials are implanted from the plant holes after the surgical expansion is completed, and the stability of the whole structure is improved.
5. The system for fixing the expandable spinous process fusion steel plate according to claim 1, wherein dovetail grooves are formed in guide wedge surfaces at two ends of the expansion grooves in the upper support plate and the lower support plate, dovetail bosses matched with the dovetail grooves are arranged on sliding wedge surfaces on the left expansion block and the right expansion block, and stability of sliding connection is guaranteed.
6. The system for fixing the expandable spinous process fusion steel plate according to claim 1, wherein at least six steel nails are respectively arranged on the inner sides of two ends of the left spinous process fixing plate and the right spinous process fixing plate, at least three steel nails are arranged on each end of the left spinous process fixing plate and the right spinous process fixing plate, and the three steel nails are not arranged on the same straight line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710796041.XA CN107485436B (en) | 2017-09-06 | 2017-09-06 | Spinous process fusion steel plate fixing system capable of being opened |
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| CN201710796041.XA CN107485436B (en) | 2017-09-06 | 2017-09-06 | Spinous process fusion steel plate fixing system capable of being opened |
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| CN107485436A CN107485436A (en) | 2017-12-19 |
| CN107485436B true CN107485436B (en) | 2023-07-21 |
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| CN201710796041.XA Active CN107485436B (en) | 2017-09-06 | 2017-09-06 | Spinous process fusion steel plate fixing system capable of being opened |
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| CN109009381A (en) * | 2018-07-17 | 2018-12-18 | 常州集硕医疗器械有限公司 | Fusing device is fixed between spinous process |
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| CN103932773A (en) * | 2014-04-14 | 2014-07-23 | 北京市奥斯比利克新技术开发有限公司 | Dual fixing device for spinous process vertebral plate |
| WO2016064148A1 (en) * | 2014-10-20 | 2016-04-28 | 주식회사 솔고바이오메탈 | Interspinous dynamic implant |
| CN106264695A (en) * | 2016-08-01 | 2017-01-04 | 周建明 | Lumbar vertebra interspinal strutting device |
| CN208243616U (en) * | 2017-09-06 | 2018-12-18 | 博能华医疗器械（北京）有限公司 | One kind can strut spinous process fusion Interal fixation system |
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| WO2014043254A1 (en) * | 2012-09-11 | 2014-03-20 | Mercy Medical Research Institute | Spinous process fixation device and systems |
| US9763706B2 (en) * | 2014-08-14 | 2017-09-19 | FloSpine, LLC | Interspinous fusion device |
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| CN101366655A (en) * | 2007-08-16 | 2009-02-18 | 上海锐植医疗器械有限公司 | Dynamic spinous process stabilizer |
| CN102440832A (en) * | 2010-10-08 | 2012-05-09 | 宝楠生技股份有限公司 | Device for fastening and fixing spinous process of spine |
| CN102512232A (en) * | 2012-01-10 | 2012-06-27 | 李照文 | Interspinal universal dynamic stabilizer |
| CN103932773A (en) * | 2014-04-14 | 2014-07-23 | 北京市奥斯比利克新技术开发有限公司 | Dual fixing device for spinous process vertebral plate |
| WO2016064148A1 (en) * | 2014-10-20 | 2016-04-28 | 주식회사 솔고바이오메탈 | Interspinous dynamic implant |
| CN106264695A (en) * | 2016-08-01 | 2017-01-04 | 周建明 | Lumbar vertebra interspinal strutting device |
| CN208243616U (en) * | 2017-09-06 | 2018-12-18 | 博能华医疗器械（北京）有限公司 | One kind can strut spinous process fusion Interal fixation system |
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