CN110478015B - Balloon type cone cavity forming device for fixing vertebral body - Google Patents
Balloon type cone cavity forming device for fixing vertebral body Download PDFInfo
- Publication number
- CN110478015B CN110478015B CN201910693586.7A CN201910693586A CN110478015B CN 110478015 B CN110478015 B CN 110478015B CN 201910693586 A CN201910693586 A CN 201910693586A CN 110478015 B CN110478015 B CN 110478015B
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- China
- Prior art keywords
- pedicle screw
- bone cement
- expandable
- expansion
- vertebral body
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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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7061—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant for stabilising vertebrae or discs by improving the condition of their tissues, e.g. using implanted medication or fluid exchange
-
- 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
-
- 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
- A61B17/7071—Implants for expanding or repairing the vertebral arch or wedged between laminae or pedicles; 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
- A61B17/7097—Stabilisers comprising fluid filler in an implant, e.g. balloon; devices for inserting or filling such implants
-
- 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
- A61B17/7097—Stabilisers comprising fluid filler in an implant, e.g. balloon; devices for inserting or filling such implants
- A61B17/7098—Stabilisers comprising fluid filler in an implant, e.g. balloon; devices for inserting or filling such implants wherein the implant is permeable or has openings, e.g. fenestrated screw
-
- 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
- A61B17/8802—Equipment for handling bone cement or other fluid fillers
- A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
-
- 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
- A61B17/8802—Equipment for handling bone cement or other fluid fillers
- A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
- A61B17/8816—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it characterised by the conduit, e.g. tube, along which fluid flows into the body or by conduit connections
-
- 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 discloses a balloon cone cavity forming device for fixing a vertebral body, which comprises: the vertebral pedicle screw is characterized in that a central hole is formed in the axial center of the vertebral pedicle screw, a plurality of bone cement diffusion holes communicated with the central hole are formed in the side wall of the front end of the vertebral pedicle screw along the circumferential direction, an expansion main pipe is arranged in the central hole, expansion branch pipes communicated with the expansion main pipe are respectively arranged in each bone cement diffusion hole, an expandable saccule communicated with the corresponding expansion branch pipe is respectively arranged at the front end of each expansion branch pipe, and when contrast agent is injected into each expandable saccule through the expansion main pipe and each expansion branch pipe, each expandable saccule extends out of the corresponding bone cement diffusion hole and expands towards the outside of the vertebral pedicle screw, so that a plurality of vertebral body cavities distributed around the vertebral pedicle screw are expanded in a vertebral body outside the vertebral pedicle screw. The invention has the advantages that: can ensure that bone cement is evenly distributed around the pedicle screws and improve the fixing effect on the pedicle screws.
Description
Technical Field
The invention relates to the technical field of auxiliary devices for spine reconstruction treatment, in particular to a balloon cone cavity forming device for fixing a vertebral body.
Background
Currently, in the surgical procedures for treating various unstable fracture dislocation of thoracolumbar vertebrae, degeneration of intervertebral disc, spondylolisthesis and kyphosis, it is necessary to fix one or more vertebral bodies above and below the affected part. At present, the upper vertebral body and the lower vertebral body are generally fixed by adopting a mode of matching pedicle screws with connecting rods, namely: firstly, respectively nailing pedicle screws at two sides of a vertebral body of an affected part, wherein the pedicle screws are distributed in an acute angle of ﹀, the other vertebral body is treated in the same way, then the pedicle screws at the same side of the two vertebral bodies are respectively connected and fixed by a connecting rod, and a plurality of vertebral bodies are treated in the same way; the internal fixation of the vertebral body can achieve the purposes of reducing and stabilizing fracture and performing functional exercise in early stage. However, when the vertebral body to be beaten with the pedicle screw is osteoporosis, the pedicle screw can loosen, cut out or withdraw after being beaten into the vertebral body, so that the fixation in the vertebral body is invalid, and the surgical treatment is failed.
Disclosure of Invention
The invention aims to provide a balloon cone cavity forming device for fixing a vertebral body, which can improve the fixing effect of a pedicle screw.
In order to achieve the above purpose, the invention adopts the following technical scheme: a balloon-type cone cavity forming device for fixing a vertebral body, comprising: the vertebral pedicle screw is characterized in that a central hole is formed in the axial center of the vertebral pedicle screw, a plurality of bone cement diffusion holes communicated with the central hole are formed in the side wall of the front end of the vertebral pedicle screw along the circumferential direction, an expansion main pipe is arranged in the central hole, expansion branch pipes communicated with the expansion main pipe are respectively arranged in each bone cement diffusion hole, an expandable saccule communicated with the corresponding expansion branch pipe is respectively arranged at the front end of each expansion branch pipe, and when contrast agent is injected into each expandable saccule through the expansion main pipe and each expansion branch pipe, each expandable saccule extends out of the corresponding bone cement diffusion hole and expands towards the outside of the vertebral pedicle screw, so that a plurality of vertebral body cavities distributed around the vertebral pedicle screw and used for pouring bone cement are expanded in the vertebral body outside the vertebral pedicle screw.
Further, the balloon cone cavity forming device for fixing a vertebral body as described above, wherein: the expandable main pipe, the expandable branch pipes and the expandable balloons are integrally formed.
Further, the balloon cone cavity forming device for fixing a vertebral body as described above, wherein: the pore diameter of the bone cement diffusion pore is gradually reduced from inside to outside.
Further, the balloon cone cavity forming device for fixing a vertebral body as described above, wherein: a magnetic navigation head is also respectively arranged at the front end part of each expandable balloon.
Through implementation of the technical scheme, the invention has the beneficial effects that: the vertebral body cavities distributed around the vertebral pedicle screws can be formed outside the vertebral pedicle screws driven into the cone, and when bone cement is injected into the vertebral body cavities through the central holes of the vertebral pedicle screws and the bone cement diffusion holes, the bone cement can be uniformly distributed outside the vertebral pedicle screws and effectively fix the vertebral pedicle screws, so that the fixing effect of the vertebral pedicle screws is improved, and the surgical treatment effect is improved.
Drawings
Fig. 1 is a schematic structural view of a balloon-type cone cavity forming device for fixing a vertebral body according to the present invention.
Fig. 2 is a schematic view of the structure of the pedicle screw shown in fig. 1.
Fig. 3 is a schematic view of the usage state of fig. 1.
Fig. 4 is a schematic view of the use of the expandable manifold, expanded branch vessels, and expandable balloon of fig. 3 after withdrawal.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific examples.
As shown in fig. 1, 2, 3 and 4, the bone cement filling device for fixing in the vertebral body comprises a pedicle screw 1, wherein a central hole 3 is formed in the axial center of the pedicle screw 1, a plurality of bone cement diffusion holes 2 communicated with the central hole 3 are formed in the front end side wall of the pedicle screw 1 along the circumferential direction, an expansion main pipe 4 is formed in the central hole 3, expansion branch pipes 5 communicated with the expansion main pipe 4 are respectively formed in each bone cement diffusion hole 2, an expandable balloon 6 communicated with the corresponding expansion branch pipe 5 is respectively formed in the front end of each expansion branch pipe 5, and when a contrast agent is filled into each expandable balloon 6 through the expansion main pipe 4 and each expansion branch pipe 5, each expandable balloon 6 extends out of the corresponding bone cement diffusion hole 2 and expands towards the outside of the pedicle screw 1, so that a plurality of vertebral body cavities 7 for filling bone cement around the pedicle screw 1 are formed in a vertebral body 8 outside the pedicle screw 1; in this embodiment, the expandable main pipe 4, each expandable branch pipe 5, and each expandable balloon 6 are integrally formed, so that the use safety can be improved;
in the embodiment, the aperture of the bone cement diffusion holes 2 is gradually reduced from the inside of the pedicle screw to the outside of the pedicle screw, so that the flow rate of the bone cement can be increased in the process of passing through the bone cement diffusion holes 2, thereby enabling the bone cement to be injected into the cavities of each vertebral body more rapidly and improving the operation efficiency;
in this embodiment, the outer end of each expandable balloon 6 in the pedicle screw 1 is further provided with a magnetic navigation head 9, when two pedicle screws in acute angle shape of ﹀ are nailed into the vertebral body to fix in the cone, the expandable balloons on opposite sides of the two pedicle screws can be ensured to expand towards the pedicle screw direction on opposite sides in the outward expansion process through the magnetic navigation head 9, so that the bone cement filling areas expanded by the expandable balloons corresponding to the two pedicle screws are communicated together, the fixing effect of bone cement on the pedicle screws is improved, and the surgical treatment effect is improved.
When the cone internal fixation operation is carried out, two pedicle screws 1 are completely nailed into the vertebral body 8 along the respective nailing direction, and the two pedicle screws are distributed in an acute angle shape of ﹀; then, injecting contrast agent into each expandable saccule 6 from the expansion main pipe 4 and each expansion branch pipe 5 corresponding to the two pedicle screws 1, so that each expandable saccule 6 extends out of the corresponding bone cement diffusion hole 2 and expands to protrude out of the pedicle screw 1, and a plurality of vertebral body cavities 7 distributed around the pedicle screw 1 are expanded in the vertebral body 8 outside the corresponding pedicle screw 1; under the interaction force of the magnetic navigation head 9, the expandable saccules on the opposite sides of the two pedicle screws expand towards the pedicle screws on the opposite sides in the outward expansion process, so that the vertebral cavities formed outside the two pedicle screws are communicated together;
then each pedicle screw 1 is rotated one circle, the expandable saccule 6 which is expanded to protrude out of the pedicle screw 1 is driven to rotate one circle around the pedicle screw 1, and a plurality of circles of annular vertebral body cavities surrounding the pedicle screw are swept out in the vertebral body 8 outside each pedicle screw 1 through the expandable saccule 6;
then the contrast medium in each expandable saccule 6 is pumped out, and then the expansion main pipe 4, each expansion branch pipe 5 and each expandable saccule 6 in the two pedicle screws 1 are pumped out; then respectively injecting bone cement into the corresponding pedicle screws 1 from the central holes 3 of the two pedicle screws, and continuously rotating the pedicle screws 1 in the gradual curing process of the bone cement after the bone cement flows into the corresponding annular vertebral cavities from the central holes 3 of the pedicle screws through the bone cement diffusion holes 2 until the bone cement in the annular vertebral cavities forms internal threads matched with the external threads of the corresponding pedicle screws 1; after the bone cement is completely solidified, the fixation of the pedicle screw is realized; because the bone cement forms the internal thread matched with the external thread of the pedicle screw, after the treatment is finished, the pedicle screw 1 can more conveniently withdraw from the vertebral body through the internal thread of the bone cement, thereby reducing the damage to the vertebral body of a patient and further improving the treatment effect of the operation.
The invention has the advantages that: the vertebral body cavities distributed around the vertebral pedicle screws can be formed outside the vertebral pedicle screws driven into the cone, and when bone cement is injected into the vertebral body cavities through the central holes of the vertebral pedicle screws and the bone cement diffusion holes, the bone cement can be uniformly distributed outside the vertebral pedicle screws and effectively fix the vertebral pedicle screws, so that the fixing effect of the vertebral pedicle screws is improved, and the surgical treatment effect is improved.
Claims (4)
1. A balloon-type cone cavity forming device for fixing a vertebral body, comprising: pedicle screw, its characterized in that: the axial center of the pedicle screw is provided with a center hole, the side wall of the front end of the pedicle screw is provided with a plurality of bone cement diffusion holes communicated with the center hole along the circumferential direction, an expansion main pipe is arranged in the center hole, expansion branch pipes communicated with the expansion main pipe are respectively arranged in each bone cement diffusion hole, the front end of each expansion branch pipe is respectively provided with an expandable saccule communicated with the corresponding expansion branch pipe, and when contrast agent is injected into each expandable saccule through the expansion main pipe and each expansion branch pipe, each expandable saccule extends out of the corresponding bone cement diffusion hole and expands towards the outside of the pedicle screw, so that a plurality of vertebral body cavities distributed around the pedicle screw and used for pouring bone cement are expanded in vertebral bodies outside the pedicle screw.
2. A balloon cone cavity forming device for intrabody fixation according to claim 1, wherein: the expandable main pipe, the expandable branch pipes and the expandable balloons are integrally formed.
3. A balloon cone cavity forming device for fixing a vertebral body according to claim 1 or 2, wherein: the pore diameter of the bone cement diffusion pore is gradually reduced from inside to outside.
4. A balloon cone cavity forming device for fixing a vertebral body according to claim 1 or 2, wherein: a magnetic navigation head is also respectively arranged at the front end part of each expandable balloon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910693586.7A CN110478015B (en) | 2019-07-30 | 2019-07-30 | Balloon type cone cavity forming device for fixing vertebral body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910693586.7A CN110478015B (en) | 2019-07-30 | 2019-07-30 | Balloon type cone cavity forming device for fixing vertebral body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110478015A CN110478015A (en) | 2019-11-22 |
| CN110478015B true CN110478015B (en) | 2023-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910693586.7A Active CN110478015B (en) | 2019-07-30 | 2019-07-30 | Balloon type cone cavity forming device for fixing vertebral body |
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| CN (1) | CN110478015B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113558740B (en) * | 2021-08-04 | 2023-07-14 | 西安市红会医院 | Bone cement self-stirring pusher for vertebroplasty |
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| CN110478015A (en) | 2019-11-22 |
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