CN107320166A - Vertebral column minimally invasive pitman - Google Patents
Vertebral column minimally invasive pitman Download PDFInfo
- Publication number
- CN107320166A CN107320166A CN201710673755.1A CN201710673755A CN107320166A CN 107320166 A CN107320166 A CN 107320166A CN 201710673755 A CN201710673755 A CN 201710673755A CN 107320166 A CN107320166 A CN 107320166A
- Authority
- CN
- China
- Prior art keywords
- taper
- pitman
- cut portion
- minimally invasive
- vertebral column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005452 bending Methods 0.000 claims abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 230000035479 physiological effects, processes and functions Effects 0.000 abstract description 2
- 230000002980 postoperative effect Effects 0.000 abstract description 2
- 210000000988 bone and bone Anatomy 0.000 description 22
- 230000000694 effects Effects 0.000 description 6
- 238000002513 implantation Methods 0.000 description 4
- 206010052428 Wound Diseases 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 2
- 230000007850 degeneration Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 208000002847 Surgical Wound Diseases 0.000 description 1
- 241001079814 Symphyotrichum pilosum Species 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 235000004224 Typha angustifolia Nutrition 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000004126 nerve fiber Anatomy 0.000 description 1
- -1 poly- ammonia Ester Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
- A61B17/7026—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other with a part that is flexible due to its form
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
- A61B2017/00238—Type of minimally invasive operation
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Neurology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The present invention provides a kind of vertebral column minimally invasive pitman, taper-cut portion including pitman body and located at described body one end, the taper-cut portion is coaxially disposed with the body, taper-cut portion side wall is uniformly provided with multiple blades vertically, the blade is set along taper-cut portion small end to big extreme direction in divergent shape, taper-cut portion top is smooth arc-shaped surface, the body includes at least three sections barred bodies, flexible connector is provided between barred body described in adjacent two, the barred body is to meet the arcuate structure that Human Physiology dissects radian, the connector is U-shaped structure, the connector is opposite with the barred body bending direction.A kind of vertebral column minimally invasive pitman that the present invention is provided, sets taper-cut portion to result only in micro-incisions when wearing rod, is not used in cutting 7CM to 20CM otch at vertebra, beneficial to post-operative recovery using connection club head.
Description
Technical field
The present invention relates to technical field of medical instruments, more particularly to a kind of vertebral column minimally invasive pitman.
Background technology
In spinal surgery, pedicle screw fixation system is used usually as internal fixation system, and pedicle screw fixation system is main
It is made up of bone screws, plug screw, pitman, its application method is：Bone screws are first implanted into the specified location of each section of backbone, then
In the groove that pitman is inserted to each murices nail seat by apparatus, and coordinated using plug screw and the nail seat screw thread of bone screws, led to
Crossing the screw-down torque of screw thread makes plug screw that securely pitman is pressed in the nail seat of bone screws, makes pitman and each bone screws complete
Connect firmly, so complete the implantation of pedicle screw fixation system.By such fixed form, it can remain relative steady at spine dislocation
It is qualitative, make patient that there is basic sitting walking function.
In traditional pedicle screw fixation system, because pitman uses rigid material, therefore this system is easily caused ridge
Power is transmitted between each section of post " stress shielding "." stress shielding " be when backbone bear along backbone direction unidirectional force or
During the torque that the action such as person's backbone grantee's trunk bending forwards is produced, because the rigidity between bone screws and pitman is connected firmly, in implantation
The spinal segments of pedicle screw fixation system, the external force or torque are mostly to be born by pedicle screw fixation system rather than by ridge
Post is born, and this phenomenon is " stress shielding ".
When " stress shielding " situation is produced, stress concentration is disconnected this not only adds pitman in pitman and non-spinal
The possibility of rod, may also cause the generation of the human body unfavorable condition such as backbone Adjacent segment degeneration.Backbone bone and its attached people
Body tissue, as a kind of biomaterial, has the phenomenon of " being moved back with entering to give up ", if certain section backbone and its attached tissue are long
Phase is not subject to mechanical loading, and its risk for producing tissue degeneration will increase.
The operation for being implanted into bone screws and pitman in vertebra at present typically uses open surgery, by entire patient fiber crops
It is liquor-saturated, 7CM to 20CM otch is cut at vertebra, bone screws are implanted into backbone, then pitman is connected across to the bone of implantation
On screw, the bone screws and pitman of implantation are fixed together by plug screw fixation, finally sewed up a wound again.The technology wound
Greatly, bleeding is more, after bone screws are implanted into backbone, it is necessary to which the musculature cut between bone screws carries out open operation, ability
Pitman is smoothly allowed to pass through bone screws, so wound is big in operation, bleeding is more, and operation risk is big, and patient is extensive after surgery
Multiple generally require slowly three months can just leave the bed, and easily leave sequelae.
The content of the invention
The technical problems to be solved by the invention are：In order to overcome in the prior art pitman easily produce " stress shielding "
And when pitman is implanted into the big deficiency of surgical wound, the present invention provides a kind of vertebral column minimally invasive pitman.
The present invention solves its technical problem technical scheme to be taken：A kind of vertebral column minimally invasive pitman, including connection
Rod body and the taper-cut portion located at described body one end, the taper-cut portion are coaxially disposed with the body, described
Taper-cut portion side wall is uniformly provided with multiple blades vertically, and the blade is in along taper-cut portion small end to big extreme direction
Divergent shape is set, and taper-cut portion top is smooth arc-shaped surface.
Taper-cut portion is that, in order to preferably wear rod, blade structure is used to cut musculature, makes to wear rod and is easier, taper
Cutting part top hurts artery or nerve fiber using smooth arc-shaped surface in order to prevent from wearing during rod, body passes through bone screws and plug screw
Pitman is fixed on backbone by cooperation, is made dislocation restoring backbone by the supporting role of pitman, is played recovery effects.
Further, the body includes being provided with flexible connection between at least three sections barred bodies, barred body described in adjacent two
Part.One section of barred body and a section backbone coordinate, and barred body are fixed on backbone by the cooperation of bone screws and plug screw, the barred body at two ends
It is fixedly connected with natural spine, middle barred body is fixedly connected with the backbone of lesion, makes dislocation by the supporting role of pitman
Restoring backbone, plays recovery effects, and connector reduces stress shielding to produce the effect of the same elastic micro-motion of spring-like
Effect, delay the regression of adjacent phases backbone.
Further, the barred body is arcuate structure, and the connector is U-shaped structure, and the connector and the barred body are curved
It is bent in opposite direction.Barred body dissects the arcuate structure of radian using Human Physiology is met, and barred body is connected with backbone and more agrees with, even
Fitting can improve the elasticity of connector using U-shaped, and U-shape structure opening direction is opposite with the caudal directions of bone screws.
Further, the one end of the body away from the taper-cut portion is provided with the connecting portion, and the connecting portion is used for
With wearing bar device socket connection.
The beneficial effects of the invention are as follows：A kind of vertebral column minimally invasive pitman that the present invention is provided, is set using connection club head
Taper-cut portion results only in micro-incisions when wearing rod, is not used in cutting 7CM to 20CM otch at vertebra, beneficial to postoperative extensive
It is multiple, using connector in order to produce the effect of the same elastic micro-motion of spring-like, the effect of stress shielding is reduced, is delayed adjacent
The regression of stage backbone.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of preferred embodiment；
Fig. 2 is the enlarged diagram of A in Fig. 1；
Fig. 3 is spine nail rod assembling schematic diagram.
In figure：1st, barred body, 2, connector, 3, taper-cut portion, 3-1, blade, 4, connecting portion, 5, bone screws, 6, plug screw.
Embodiment
Presently in connection with accompanying drawing, the present invention is described in detail.This figure is simplified schematic diagram, is only illustrated in a schematic way
The basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
As shown in Figure 1-2, a kind of vertebral column minimally invasive pitman of the invention, including three sections of arc barred bodies 1, rod described in adjacent two
Flexible U-shaped connector 2 is provided between body 1, the axis of barred body 1 is on same circumference, and the U-shaped connector 2 is curved
Qu Fangxiang is with the bending direction of barred body 1 on the contrary, the barred body 1 is made of titanium alloy, and the U-shaped connector 2 uses poly- ammonia
Ester material injection molding is made.
The one end of the barred body 1 away from the U-shaped connector 2 is provided with taper-cut portion 3, the side wall of taper-cut portion 3
Multiple blade 3-1 are uniformly provided with vertically, and the blade 3-1 is along the small end of taper-cut portion 3 to big extreme direction in divergent shape
Set, the top of taper-cut portion 3 is smooth arc-shaped surface, the taper-cut portion 3 is integrally machined with the barred body 1 and is made, institute
Blade 3-1 is stated to form using cutter cutting.
The other end of the barred body 1 away from the U-shaped connector 2 is provided with connecting portion 4, and the connecting portion 4 is used for wearing rod
Device socket connection, the connecting portion 4 is that section is the polygonized structures such as triangle, square or regular hexagon.
Installation process：
Dislocated as shown in figure 3, being first implanted into three bone screws 5 respectively on backbone and its two adjacent normal backbones of section,
Then pitman is inserted in the groove of each nail seat of bone screws 5 by wearing bar device, and uses plug screw 6 and the nail seat of bone screws 5
Screw thread coordinates, and makes plug screw 6 that securely pitman barred body 1 is pressed in the nail seat of bone screws 5 by the screw-down torque of screw thread, until
Dislocation backbone is pulled to normal position.
Using the above-mentioned desirable embodiment according to the present invention as enlightenment, pass through above-mentioned description, related staff
Various changes and amendments can be carried out in without departing from the scope of the present invention completely.The technical scope of this invention is not
It is confined to the content on specification, it is necessary to its technical scope is determined according to right.
Claims (4)
1. a kind of vertebral column minimally invasive pitman, it is characterised in that：Taper including pitman body and located at described body one end
Cutting part (3), the taper-cut portion (3) is coaxially disposed with the body, and taper-cut portion (3) side wall is uniform vertically
Provided with multiple blades (3-1), the blade (3-1) is set along taper-cut portion (3) small end to big extreme direction in divergent shape,
Taper-cut portion (3) top is smooth arc-shaped surface.
2. vertebral column minimally invasive pitman as claimed in claim 1, it is characterised in that：The body includes at least three sections barred bodies (1),
Flexible connector (2) is provided between barred body (1) described in adjacent two.
3. vertebral column minimally invasive pitman as claimed in claim 2, it is characterised in that：The barred body (1) is arcuate structure, the company
Fitting (2) is U-shaped structure, and the connector (2) is opposite with the barred body (1) bending direction.
4. vertebral column minimally invasive pitman as claimed in claim 1, it is characterised in that：The body is away from the taper-cut portion
(3) one end is provided with the connecting portion (4), and the connecting portion (4) is used for wearing bar device socket connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710673755.1A CN107320166A (en) | 2017-08-09 | 2017-08-09 | Vertebral column minimally invasive pitman |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710673755.1A CN107320166A (en) | 2017-08-09 | 2017-08-09 | Vertebral column minimally invasive pitman |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107320166A true CN107320166A (en) | 2017-11-07 |
Family
ID=60198959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710673755.1A Pending CN107320166A (en) | 2017-08-09 | 2017-08-09 | Vertebral column minimally invasive pitman |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107320166A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109549697A (en) * | 2019-01-28 | 2019-04-02 | 江苏嘉斯康医疗科技有限公司 | Flexible rod is used in a kind of operation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020161368A1 (en) * | 1999-10-20 | 2002-10-31 | Foley Kevin T. | Instruments and methods for stabilization of bony structures |
| CN201175363Y (en) * | 2008-04-14 | 2009-01-07 | 上海凯得精密模具有限公司 | Medical visual puncture awl |
| CN201194833Y (en) * | 2008-05-22 | 2009-02-18 | 南方医科大学 | Elastic internal fixation device for lumbar |
| JP2015226746A (en) * | 2014-11-04 | 2015-12-17 | 日本メディカルオーダー株式会社 | Implant for connecting vertebra fixing rod |
| CN208447751U (en) * | 2017-08-09 | 2019-02-01 | 常州奥斯迈医疗器械有限公司 | Vertebral column minimally invasive pitman |
-
2017
- 2017-08-09 CN CN201710673755.1A patent/CN107320166A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020161368A1 (en) * | 1999-10-20 | 2002-10-31 | Foley Kevin T. | Instruments and methods for stabilization of bony structures |
| CN201175363Y (en) * | 2008-04-14 | 2009-01-07 | 上海凯得精密模具有限公司 | Medical visual puncture awl |
| CN201194833Y (en) * | 2008-05-22 | 2009-02-18 | 南方医科大学 | Elastic internal fixation device for lumbar |
| JP2015226746A (en) * | 2014-11-04 | 2015-12-17 | 日本メディカルオーダー株式会社 | Implant for connecting vertebra fixing rod |
| CN208447751U (en) * | 2017-08-09 | 2019-02-01 | 常州奥斯迈医疗器械有限公司 | Vertebral column minimally invasive pitman |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109549697A (en) * | 2019-01-28 | 2019-04-02 | 江苏嘉斯康医疗科技有限公司 | Flexible rod is used in a kind of operation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171107 |