CN109124752A - A kind of vertebral column minimally invasive Cement fixation device assembly - Google Patents
A kind of vertebral column minimally invasive Cement fixation device assembly Download PDFInfo
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- CN109124752A CN109124752A CN201811071201.5A CN201811071201A CN109124752A CN 109124752 A CN109124752 A CN 109124752A CN 201811071201 A CN201811071201 A CN 201811071201A CN 109124752 A CN109124752 A CN 109124752A
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- pipe
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- fixation device
- vertebral column
- pedicle screw
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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
- A61B17/8802—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
- A61B17/8825—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it characterised by syringe details
-
- 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
- A61B17/7094—Solid vertebral fillers; devices for inserting such fillers
-
- 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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
- A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
- A61B17/862—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the periphery of the screw head
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/864—Pins or screws or threaded wires; nuts therefor hollow, e.g. with socket or cannulated
-
- 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
- A61B17/8819—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it characterised by the introducer proximal part, e.g. cannula handle, or by parts which are inserted inside each other, e.g. stylet and cannula
-
- 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
- A61B17/8833—Osteosynthesis tools specially adapted for handling bone cement or fluid fillers; Means for supplying bone cement or fluid fillers to introducing tools, e.g. cartridge handling means
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
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- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
The present invention relates to medical instruments fields, and in particular to a kind of vertebral column minimally invasive Cement fixation device assembly.A kind of vertebral column minimally invasive Cement fixation device assembly, including boost assemblies and pedicle screw, first pipe is provided in the pedicle screw, bone cement can be accommodated in the boost assemblies and releases bone cement from top, the top of the boost assemblies is connected to the end of the first pipe, in the top insertion corpus vertebrae of the pedicle screw.By the way that mutually matched boost assemblies and pedicle screw is arranged, first the top of pedicle screw can be implanted in corpus vertebrae, then bone cement is pushed into pedicle screw by boost assemblies, and then is injected into centrum.Due to the implantation of pedicle screw, and pedicle screw is provided with hollow pipeline, may make that the injection direction of bone cement is stable, accurate.Assist device existing in the prior art is solved to lack location structure and easily lead to the wrong technical problem in injection phase.
Description
Technical field
The present invention relates to medical instruments fields, and in particular to a kind of vertebral column minimally invasive Cement fixation device assembly.
Background technique
Vertebral fracture can lead to the dysfunction pain of periods of months, and this pain can make patient disability
And locomitivity, it can rapidly cause the formation and pulmonary embolism of forfeiture, atelectasis and the pneumonia, deep vein thrombosis of limb function
Etc. fatal complication, compression fracture of vertabral body was also that many life of elderly person cannot take care of oneself and lose the original lived on one's own life in the past
Cause.Using a large amount of drug therapy, it can usually cause poisonous side effect of medicine and pharmacological dependence.Percutaneous vertebroplasty is used at present
To treat vertebral compression fracture, it is that pedicle is punctured to fractured vertebral body under guidance of C-arm machine, then passes through puncture needle for operation
Bone cement is injected into centrum is fixed centrum.
Application No. is the applications of CN201110223213.7 to disclose one kind for filling bone in percutaneous vertebroplasty operation
The assist device of cement, specifically discloses: including bone cement sprue bushing, bone cement injection push rod, pusher grip and casing hand
Handle, pusher grip are fixed on bone cement injection push rod, and casing handle is fixed in bone cement sprue bushing, and bone cement injection pushes away
Bar can be put into bone cement sprue bushing, and can be movable back and forth, and casing handle tip and pusher grip bottom intercouple
Screw thread, can be fixed together by the two.Above-mentioned assist device remains to stablize when injecting the bone cement biggish pressure of needs
Guarantee bone cement steadily inject centrum.But above-mentioned assist device lacks internal fixation of spine structure, therefore is unfavorable in backbone
Interior fixation not can guarantee the accuracy of bone cement injection phase then.
Summary of the invention
Lack location structure in order to solve assist device existing in the prior art and easily lead to the wrong skill in injection phase
Art problem, the present invention propose a kind of vertebral column minimally invasive Cement fixation device assembly, solve above-mentioned technical problem, technology of the invention
Scheme is as follows:
A kind of vertebral column minimally invasive Cement fixation device assembly, including boost assemblies and pedicle screw, the pedicle screw
It is inside provided with first pipe, bone cement can be accommodated in the boost assemblies and is released bone cement from top, the boost assemblies
Top be connected to the end of the first pipe, in the top of pedicle screw insertion corpus vertebrae.
By the way that mutually matched boost assemblies and pedicle screw is arranged, the top of pedicle screw first can be implanted to people
In body centrum, then passes through boost assemblies and bone cement is pushed into pedicle screw, and then be injected into centrum.Due to pedicle of vertebral arch screw
The implantation of nail, and pedicle screw is provided with hollow pipeline, may make that the injection direction of bone cement is stable, accurate.
Further, the pedicle screw includes nail rod and ailhead, is provided with the first screw thread on the nail rod outer surface,
It is provided with first pipe in the nail rod, the outlet being connected to the first pipe is provided in the nail rod, the nail rod
Tail end is fixedly connected with ailhead.
Further, the ailhead is hollow structure, is provided with U-lag on the ailhead, the separate nail rod of the ailhead
One end is axially extending guide plate.
Further, the U-lag and the guide plate are two, and two U-lags are evenly distributed on the nail
On head, thread groove is provided on the inner surface of the guide plate.
Further, the boost assemblies include casing and push rod, and second pipe, described sleeve pipe are provided in described sleeve pipe
Top can protrude into the ailhead and be connected to the second pipe with the first pipe, the push rod can be from the tail end of casing
It protrudes into the second pipe and is moved along the second pipe.
Further, described sleeve pipe includes the tube body being fixedly connected and pipe handle, and the top of the tube body is discharge port, described
Tube body is provided with position limiting structure on the outer surface of the discharge port, is provided with Shandong on the end face of the separate tube body of the pipe handle
That connector, the tube body, pipe handle and female Luer are sequentially communicated, and axially extending second pipe is formed inside three.
Further, the push rod includes the body of rod being fixedly connected and rod handle, and the top of the body of rod can extend into second
In pipeline, the one end of the rod handle connecting with the body of rod is provided with the sticking department with female Luer cooperation.
It further, further include pressure pipe, the pressure pipe is provided with receiving between guide plate and casing in the pressure pipe
The through slot of described sleeve pipe is provided with the second screw thread matched with the thread groove, the pressure pipe on the outer surface of the pressure pipe
Top be resisted against on the position limiting structure, the tail end of the pressure pipe is rotating part.
Further, the width W of the through slot is not less than the outer diameter of the tube body, and the width of the through slot is less than the limit
The outer diameter of bit architecture.
Further, the outer diameter of the rotating part is greater than the outer diameter of the pressure pipe, and the outer surface of the rotating part is provided with
Straight knurling.
Based on the above-mentioned technical proposal, the technical effect achieved by the present invention are as follows:
1. vertebral column minimally invasive Cement fixation device assembly of the invention, by the way that mutually matched boost assemblies and pedicle of vertebral arch is arranged
The top of pedicle screw can first be implanted in corpus vertebrae, then bone cement is pushed into pedicle of vertebral arch by boost assemblies by screw
In screw, and then it is injected into centrum.Due to the implantation of pedicle screw, and pedicle screw is provided with hollow pipeline, boosting
Bone cement in component can inject human body by pedicle screw, thus the injection direction of bone cement is stable, accurate；
2. vertebral column minimally invasive Cement fixation device assembly of the invention can be to boosting by the way that guide plate is arranged on setting ailhead
Communication direction between component and pedicle screw is defined, and it is accurate between the top of boost assemblies and pedicle screw to guarantee
Connection, not will cause the leakage of bone cement；
3. vertebral column minimally invasive Cement fixation device assembly of the invention, boost assemblies include casing and push rod, are incited somebody to action by push rod
Bone cement in casing is injected into pedicle screw, when needing biggish pressure when injecting bone cement, remains to stable guarantor
Card bone cement steadily injects pedicle screw, easy to operate, avoids in operating process and damages to patient；
4. vertebral column minimally invasive Cement fixation device assembly of the invention, mutually matched female Luer is provided in boost assemblies
And sticking department, casing and push rod two parts can be locked to form an entirety；
5. vertebral column minimally invasive Cement fixation device assembly of the invention, further includes the pressure pipe between guide plate and casing,
Pressure pipe is threadedly coupled with guide plate, and the top of pressure pipe is resisted against on the position limiting structure of casing, is used for retaining sleeve and pedicle of vertebral arch screw
The connected state of nail；It is provided with through slot in pressure pipe, can draw after boost assemblies are connected to pedicle screw by pressure pipe setting
It between guide card and casing, is connected through a screw thread, by rotation pressure pipe, can suitably adjust the relative position between pressure pipe and casing,
Under the premise of guaranteeing the abutment action of pressure pipe, casing will not be damaged；
6. vertebral column minimally invasive Cement fixation device assembly of the invention, casing, push rod are sterilising prods, disposable, pressure
Pipe can reduce cost to reuse product；In use process, it is only necessary to which casing insertion, pressure pipe locking, push rod are pushed into three steps
Surgical procedure can be completed, it is easy to operate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of vertebral column minimally invasive Cement fixation device assembly of the invention；
Fig. 2 is the exploded view of vertebral column minimally invasive Cement fixation device assembly of the invention；
Fig. 3 is the portion the A enlarged drawing of Fig. 2；
Fig. 4 is the structural schematic diagram of pressure pipe；
Fig. 5 is the top view of Fig. 4；
In figure: 1- pedicle screw；11- nail rod；The first screw thread of 111-；The outlet 112-；12- ailhead；121-U shape slot；13-
Guide plate；14- wedge groove；2- boost assemblies；21- casing；211- tube body；2111- discharge port；2112- position limiting structure；212- pipe
Handle；2121- female Luer；22- push rod；The 221- body of rod；222- rod handle；3- pressure pipe；31- through slot；The second screw thread of 32-；33- rotation
Portion.
Specific embodiment
The contents of the present invention are further described with reference to the accompanying drawings of the specification.
As shown in Figs. 1-5, a kind of vertebral column minimally invasive Cement fixation device assembly, including pedicle screw are present embodiments provided
1, the top of boost assemblies 2 and pressure pipe 3, pedicle screw 1 is inserted into corpus vertebrae, and the first pipe is provided in pedicle screw 1
Road, second pipe is provided in boost assemblies 2, and boost assemblies 2 can accommodate bone cement and release bone cement from top, boosting group
The end of the top insertion first pipe of part 2 is connected to first pipe with second pipe.Pressure pipe 3 is located at pedicle screw 1 and helps
It pushes away between component 2, plays the role of the relative position of fixed boost assemblies 2 and pedicle screw 1.
Pedicle screw 1 includes nail rod 11 and ailhead 12, and nail rod 11 is fixedly connected with ailhead 12.The top of nail rod 11 is protruded into
Into corpus vertebrae, the tail end of nail rod 11 is fixedly connected with ailhead 12.First pipe is provided in nail rod 11, it is preferable that first
Pipeline extends to tail end from the top of nail rod 11；The first screw thread is provided on the outer surface of nail rod 11, it is preferable that close to nail rod 11
Top the first screw thread it is more sparse than the first screw thread of the tail end of close nail rod 11；The top of nail rod 11 is provided with outlet 112, out
Mouth 112 is connected to the first pipe in nail rod 11, and the bone cement that first pipe transmits enters human body vertebra by outlet 112
Body, it is preferable that outlet 112 is multiple, on the side walls on the top that multiple outlets 112 are distributed in nail rod 11.
Ailhead 12 is hollow structure, and the inside that boost assemblies 2 can reach ailhead 12 is connected to the first pipe in nail rod 11.
It is provided with U-lag 121 on ailhead 12, the opening of U-lag 121 is towards boost assemblies 2, it is preferable that U-lag 121 is two, two U
Shape slot 121 is uniformly distributed on ailhead 12, and one end of the separate nail rod 11 of ailhead 12 is separated into two points by two U-lags 121
Pitch body.One end of the separate nail rod 11 of ailhead 12 is extended with guide plate 13, specifically, is extended in two furcation bodies of ailhead 12
Guide plate 13 extends a guide plate 13 in a furcation body.Preferably, guide plate 13 is axially extending.It is further preferred that two
It is provided with thread groove on the inner surface of a guide plate 13, for being threadedly coupled with pressure pipe 3.The joint of ailhead 12 and guide plate 13
The wedge groove 14 of circumferentially extending is provided on outer surface.
Boost assemblies 2 include casing 21 and push rod 22, are provided with second pipe in casing 21, the top of casing 21 can be protruded into
To the inside of the ailhead 12 of pedicle screw 1, it is connected to second pipe with first pipe, push rod 22 can be extend into casing 21
In second pipe, and moved along second pipe.Casing 21 includes tube body 211 and pipe handle 212, and tube body 211 and pipe handle 212, which are fixed, to be connected
It connects or is integrally formed.For tube body 211 in hollow cylindric, the top of tube body 211 being connected to first pipe is discharge port
2111, position limiting structure 2112 is provided on the outer surface of the close discharge port 2111 of tube body 211, it is preferable that discharge port 2111
Outer diameter is less than the outer diameter of tube body 211, by reducing the size at discharge port 2111, discharge port 2111 is facilitated to be inserted into second pipe
It is interior, it is connected to first pipe with second pipe；Preferably, position limiting structure 2112 is the cylindrical sleeve being set in outside tube body 211
Structure.In use, one end of the close discharge port 2111 of position limiting structure 2112 can be resisted against on pedicle screw 1, to casing
21 depth being inserted into pedicle screw 1 are limited.
One end of the separate discharge port 2111 of tube body 211 is arranged in pipe handle 212, and pipe handle 212 and the hand shape of people are adapted, side
Just it grasps, the tail end of the separate tube body 211 of pipe handle 212 is provided with female Luer 2121, and pipe handle 212 is in hollow structure, and Rule connects
First 2121 be also in hollow structure, and tube body 211, pipe handle 212 and female Luer 2121 are sequentially communicated, and forms second pipe, it is preferable that
Second pipe is axially extending.
Push rod 22 includes the body of rod 221 and rod handle 222, and the body of rod 221 is fixedly connected or is integrally formed with rod handle 222.The body of rod
221 top can be extend into second pipe, and the sticking department cooperated with female Luer 2121 is provided in rod handle 222.Specifically,
Female Luer 2121, pipe handle 212 and tube body 211 are successively protruded into the top of the body of rod 221, and the bone cement in second pipe is released the
Two pipelines；The shape of rod handle 222 and the hand shape of people are adapted, and facilitate grasping；Sticking department rod handle 222 is set with the body of rod 221
One end of connection.
Preferably, the material of tube body 211 and the body of rod 221 is stainless steel material；The material of pipe handle 212 and rod handle 222 is equal
For high molecular material.
Pressure pipe 3 is between pedicle screw 1 and boost assemblies 2, and specifically, pressure pipe 3 is located at guide plate 13 and boosting group
Between part 2.Pressure pipe 3 is cylindrical, and through slot 31 is provided in pressure pipe 3, and the through slot 31 of pressure pipe 3 is used for containment sheath 21, it is preferable that logical
Slot 31 extends to bottom end, the U-shaped profile of through slot 31 from the top of pressure pipe 3；It is further preferred that 21 sets of casing for convenience
It is located at the inside of pressure pipe 3, the width W of through slot 31 is not less than the outer tube diameter of casing 21.It is further preferred that the width of through slot 31
Spend the outer tube diameter that W is not less than casing 21, and the outer diameter for the position limiting structure 2112 being less than on tube body 211.
The second screw thread 32 matched with the thread groove on guide plate 13 is provided on the outer surface of pressure pipe 3, it is preferable that the
Two screw threads 32 are arranged close to the top of pressure pipe 3, are threadedly engaged by the second screw thread 32 with thread groove, pressure pipe 5 can be tightened on vertebra
On the guide plate 13 of pedicle screw 1, the position limiting structure 2112 on tube body 211 is less than due to the width W of the through slot 31 in pressure pipe 3
Outer diameter, therefore the top of pressure pipe 5 is resisted against on the position limiting structure 2112 on tube body 211, guarantees the company of first pipe and second pipe
It is logical.
The tail end of pressure pipe 3 is rotating part 32, rotates pressure pipe 3 after facilitating grasping, is threadedly coupled pressure pipe 3 with guide plate 13.
The outer diameter of rotating part 31 is greater than the outer diameter of pressure pipe 3, it is preferable that straight knurling is provided on the outer surface of rotating part 31, increase rubs
Power is wiped, facilitates and rotating part 31 is driven to rotate.
Based on above structure, the application method of vertebral column minimally invasive Cement fixation device assembly of the invention are as follows: firstly, completing quasi-
Standby work: the top of pedicle screw is extend into corpus vertebrae, fills bone cement in the second pipe of casing 21；So
Afterwards, be inserted into casing 21: the discharge port 2111 of casing 21 is inserted into the first pipe of pedicle screw 1, make first pipe and
Second pipe connection；Subsequently, it locks pressure pipe 3: being packed into pressure pipe 3 outside casing 21, rotate pressure pipe 3, make the second spiral shell in pressure pipe 3
Line 32 is screwed with the thread groove on guide plate 13, realizes the fixation of pressure pipe 3；Finally, push rod is pushed into: push rod 22 is inserted into casing 21
Second pipe in, push push rod 22, bone cement be perfused out of casing 21 such as in pedicle screw 1, is finally injected into human body
It is interior.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Mode within the knowledge of a person skilled in the art can also be in the premise for not departing from spirit of the invention
Under make a variety of changes.
Claims (10)
1. a kind of vertebral column minimally invasive Cement fixation device assembly, which is characterized in that including pedicle screw (1) and boost assemblies (2),
It is provided with first pipe in the pedicle screw (1), bone cement can be accommodated in the boost assemblies (2) and by bone cement from top
End is released, and the top of the boost assemblies (2) is connected to the end of the first pipe, the top of the pedicle screw (1)
It is inserted into corpus vertebrae.
2. a kind of vertebral column minimally invasive Cement fixation device assembly as described in claim 1, which is characterized in that the pedicle screw
(1) include nail rod (11) and ailhead (12), be provided with the first screw thread (111), the nail rod on nail rod (11) outer surface
(11) it is provided with first pipe in, the outlet (112) being connected to the first pipe, the nail are provided on the nail rod (11)
The tail end of bar (11) is fixedly connected with ailhead (12).
3. a kind of vertebral column minimally invasive Cement fixation device assembly as claimed in claim 2, which is characterized in that the ailhead (12) is
Hollow structure is provided with U-lag (121) on the ailhead (12), and one end of the separate nail rod (11) of the ailhead (12) is axially prolonged
Stretching has guide plate (13).
4. a kind of vertebral column minimally invasive Cement fixation device assembly as claimed in claim 3, which is characterized in that the U-lag (121)
It is two with the guide plate (13), two U-lags (121) are evenly distributed on the ailhead (12), the guidance
Thread groove is provided on the inner surface of piece (13).
5. such as a kind of described in any item vertebral column minimally invasive Cement fixation device assemblies of claim 2-4, which is characterized in that described to help
Pushing away component (2) includes casing (21) and push rod (22), is provided with second pipe, the top of described sleeve pipe (21) in described sleeve pipe (21)
Portion, which can protrude into the ailhead (12), is connected to the second pipe with the first pipe, and the push rod (22) can be from casing
(21) tail end protrudes into the second pipe and moves along the second pipe.
6. a kind of vertebral column minimally invasive Cement fixation device assembly as claimed in claim 5, which is characterized in that described sleeve pipe (21) packet
The tube body (211) and pipe handle (212) being fixedly connected are included, the top of the tube body (211) is discharge port (2111), the tube body
(211) it is provided with position limiting structure (2112) on the outer surface of the discharge port (2111), the separate pipe of the pipe handle (212)
Be provided on the end face of body (211) female Luer (2121), the tube body (211), pipe handle (212) and female Luer (2121) according to
Secondary connection, three inside form axially extending second pipe.
7. a kind of vertebral column minimally invasive Cement fixation device assembly as claimed in claim 6, which is characterized in that push rod (22) packet
The body of rod (221) being fixedly connected and rod handle (222) are included, the top of the body of rod (221) can be extend into second pipe, the bar
The one end of handle (222) connecting with the body of rod (221) is provided with the sticking department with the female Luer (2121) cooperation.
8. a kind of vertebral column minimally invasive Cement fixation device assembly as claimed in claims 6 or 7, which is characterized in that further include pressure pipe
(3), the pressure pipe (3) is located between guide plate (13) and casing (21), is provided with receiving described sleeve pipe on the pressure pipe (3)
(21) through slot (31) is provided with the second screw thread (32) matched with the thread groove, institute on the outer surface of the pressure pipe (3)
The top for stating pressure pipe is resisted against on the position limiting structure, and the tail end of the pressure pipe is rotating part.
9. a kind of vertebral column minimally invasive Cement fixation device assembly as claimed in claim 8, which is characterized in that the through slot (31)
Width W is not less than the outer diameter of the tube body (211), and the width W of the through slot (31) is less than the outer of the position limiting structure (2112)
Diameter.
10. a kind of vertebral column minimally invasive Cement fixation device assembly as claimed in claim 8, which is characterized in that the rotating part
(33) outer diameter is greater than the outer diameter of the pressure pipe (3), and the outer surface of the rotating part (33) is provided with straight knurling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811071201.5A CN109124752A (en) | 2018-09-14 | 2018-09-14 | A kind of vertebral column minimally invasive Cement fixation device assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811071201.5A CN109124752A (en) | 2018-09-14 | 2018-09-14 | A kind of vertebral column minimally invasive Cement fixation device assembly |
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| CN111012469A (en) * | 2020-01-07 | 2020-04-17 | 常州百隆微创医疗器械科技有限公司 | Medical large bone cement filling device |
| WO2022041653A1 (en) * | 2020-08-28 | 2022-03-03 | 浙江科惠医疗器械股份有限公司 | Bone cement injection device capable of preventing bone cement leakage |
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