CN102283706A - Boltless anterior cervical vertebrae fixing plate and fixing method thereof - Google Patents
Boltless anterior cervical vertebrae fixing plate and fixing method thereof Download PDFInfo
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- CN102283706A CN102283706A CN2011102340358A CN201110234035A CN102283706A CN 102283706 A CN102283706 A CN 102283706A CN 2011102340358 A CN2011102340358 A CN 2011102340358A CN 201110234035 A CN201110234035 A CN 201110234035A CN 102283706 A CN102283706 A CN 102283706A
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- anterior cervical
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Abstract
The invention relates to a boltless anterior cervical vertebrae fixing plate and a fixing method thereof. So far, a steel plate bolt system at least comprises four bolts, the loosening or disengagement of any one bolt leads to operation failure, and the incidence rate is 1-3%; the distance between the bolts and upper and lower edges of the fixing plate probably affects the movement function of adjacent segments, or even generates early-stage regression; and longer fixing process time consumption increases the occurrence risk of infection and other operation complications. According to the invention, an observation hole is arranged at the center position of the fixing plate, a plate-shaped nail is arranged on the fixing plate, and the fixing plate and the plate-shaped nail are in an integrated structure. The fixing plate provided by the invention does not comprise a bolt, and a sawtooth-shaped hook is arranged on the inherent plate-shaped nail, thereby eliminating the complications of bolt loosening or disengagement; the fixing plate and the plate-shaped nail are integrated, thereby shortening the plate length and reducing the probability of influence on the adjacent segments; and the operation steps are simple, thereby shortening the operation time and reducing the infection and other complications caused by overlong exposure time.
Description
Technical field
The invention belongs to Orthopeadic Surgery, be specifically related to a kind of anterior cervical fixation plate and fixing means thereof that does not have screw.
Background technology
Anterior cervical decompression, fusion is a spinal column section operation method commonly used, since Gaspar anterior plate fixation screw system invention in 1991, after anterior cervical decompression merges, stability has obtained realizing at once, make the patient can early ambulation, fusion rate and therapeutic effect have been improved, the screw system with lock that occurs in succession etc. afterwards, also all be to deviate from attempt prevention screw, but still there is the problem of the following aspects in the steel plate screw system so far: 1. every cover fixed system comprises 4 pieces of screws at least, any one piece of screw loosening or deviate from all to cause operative failure, its incidence rate between 1%-3%, does not still have improved products at present yet; 2. the distance between the upper and lower edge of screw and fixing head might have influence on the motor function of adjacent segment, even produces early stage regression.3. fixation procedure is consuming time longer, has increased the risk that takes place as postoperative complications such as infection.
Summary of the invention
Technical problem solved by the invention provides a kind of complication that can prevent that screw loosening or hauling-out from causing, anterior cervical fixation plate and fixing means thereof simple in structure, as to settle conveniently, be provided with easy no screw.
For solving above-mentioned technical problem, the technical scheme that the present invention takes:
A kind of anterior cervical fixation plate that does not have screw is characterized in that: the middle position She Zhi You loophole of described fixing head, and fixing head is provided with tabular nail, and fixing head and tabular nail are integral structure.
Four above-mentioned tabular nails are arranged on four interior angles of fixing head.
Four above-mentioned tabular nails are provided with a pair of respectively in the both sides up and down of fixing head, each tabular nailing on is provided with two pairs of zigzag hooks, and the formation barb outwards is set in the horizontal direction.
Above-mentioned fixing head is by the medical titanium alloy material.
Above-mentioned fixing head thickness 1.6mm, width 15mm, length is 22.5+2.5Nmm, N be smaller or equal to natural number.
Above-mentioned tabular nail is a platy structure, is trapezoidal.
The upper end length of above-mentioned tabular nail is 0.5mm, and lower end length is 0.3mm, and length is 13mm, 14 mm or 15mm, and the distance that is located at tabular zigzag hook that nails on and fixing head is 5mm and 10mm place, and projection length is 2 mm.
The fixing means of above-mentioned a kind of anterior cervical fixation plate that does not have a screw is as follows:
(1), throat outside approach cuts a skin, subcutaneous, platysma according to layer, enters along between vagina vasorum and esophagus trachea sheath, appears vertebral body and intercalated disc;
(2), C type arm perspective confirms that the gap is correct, the excision intervertebral disc;
(3), implant from the body bone in interbody space;
(4), select the above-mentioned suitable types and the anterior cervical fixation plate of size;
(5), determine that tabular nail is in the epicentral position that is driven into;
(6), in the position that the tabular nail of vertebral body is driven in advance, with the special-purpose cutter of operation, cut a hole four and follows closely grooves;
(7), after tabular nail is aimed at four nail grooves, tabular nail is driven into vertebral body, fixing head is adjacent to mutually with the vertebral body front.
Compared with prior art, beneficial effect of the present invention:
1, the present invention is not with screw, inherent tabular nailing on to be provided with the zigzag hook, the complication of having eliminated screw loosening or having deviate from;
2, fixing head nail tabular with it is one, shortened the length of plate, reduced the probability to the adjacent segment influence;
3, operating time has been shortened in operating procedure unification, has reduced because of the long complication of bringing such as infection of open-assembly time.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is an axonometric chart of the present invention;
Fig. 4 is an installation diagram of the present invention.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1 ~ 4, the present invention includes the fixing head 1 of Dai You loophole, the middle position She Zhi You loophole 3 of described fixing head 1, fixing head 1 is provided with tabular nail 2, and fixing head 1 and tabular nail 2 are integral structure.
Four above-mentioned tabular nails 2 are arranged on four interior angles of fixing head 1.
Four above-mentioned tabular nails 2 are provided with a pair of respectively in the both sides up and down of fixing head 1, on each tabular nail 2 two pairs of zigzag hooks 4 are set, and the formation barb outwards is set in the horizontal direction.
Fixing head is by the medical titanium alloy material.
Fixing head thickness 1.6mm, width 15mm, length 22.5mm rises.Its thickness and width are constant later on, and length is made a kind of fixing head by every increase 2.5mm, wherein is 25 mm, 27.5 mm.
Above-mentioned tabular nail 2 is a platy structure, is trapezoidal.
The upper end length of above-mentioned tabular nail 2 is 0.5mm, and lower end length is 0.3mm, and length is 13mm, 14 mm or 15mm, and zigzag hook 4 is located on the tabular nail 2, with the distance of fixing head 1 be 5mm and 10mm place, projection length is 2 mm.
Use:
With cervical intervertebral disk preceding road excision, fusion, internal fixation is an example explanation using method:
(1), throat outside approach cuts a skin, subcutaneous, platysma according to layer, enters along between vagina vasorum and esophagus trachea sheath, appears vertebral body and intercalated disc;
(2), C type arm perspective confirms that the gap is correct, the excision intervertebral disc;
(3), implant from the body bone in interbody space;
(4), select the above-mentioned suitable types and the anterior cervical fixation plate of size;
(5), determine that tabular nail 2 is in the epicentral position that is driven into;
(6), in the position that the tabular nail 2 of vertebral body is driven in advance, with the special-purpose cutter of operation, cut a hole four and follows closely grooves;
(7), after tabular nail 2 is aimed at four nail grooves, tabular nail 2 is driven into vertebral body, fixing head 1 is adjacent to mutually with the vertebral body front.
Through the fresh neck bone mechanical test of animal, adopt the fixing head of said structure to compare with present general in the world " Zephir " titanium plate bolt system, more close aspect exerting oneself at resistance to plucking, prove that its fixation is reliable.
Experimental data
One, materials and methods:
1. the complete cervical vertebra specimen of fresh adult pig, be placed on fresh food frozen in the normal saline,-20 ℃ of storages, consult medical history, radiological examination is got rid of specimen fracture and osteopathia, after thawing naturally, specimen takes out complete cervical vertebra between 7 sections on the neck 2-neck respectively, reject muscular tissue, keep ligament and joint capsule, obtain 60 tool experimental specimens altogether, specimen is fixed in the isopropyl acid methyl ester of experimental provision, make specimen and fixture firm, expose the vertebral body forward surface so that the installation testing instrument is installed to the electronic equipment test system with fixture and specimen.
2. whole experiment is carried out in Xi'an Communications University aerospace engineering dept Experiments of Machanics chamber, and the experiment test instrument is selected Britain ISNTRON195 type electronic universal tester for use, and systematic error is 5 ‰.
3. at random 60 specimen are divided into 2 groups, the A group is experimental group (30 tool), and the B group is matched group (30 tool).Wherein B selects for use U.S. Dan Li company to produce, at present by the ZEPHIR of international extensive use.Every secondary cervical vertebra is all according to same working specification, cuts neck 4,5 fibrous ring, and the vertebral pulp pincers are removed vertebral pulp, handle adjacent endplates, use that spongy bone is implanted and vertebral body between.The A group is used fixedly neck 4-neck of no screw anterior cervical fixation plate of the present invention
5, the B group is used fixedly neck 4-neck 5 of ZEPHIR system, and experimental specimen is confirmed that through X-ray film (CR) inspection the fixed position is errorless, with multidirectional adapter specimen is fixed on the experimental provision, every group is divided into 6 groups (every group 5 tools) again at random, carries out axial tension respectively, axially malleation is anteflexion, after stretch, lateroflexion, reverse 6 kinds of stress tests, test in speed with the 0.2mm/sec perseverance, the Applied Digital ergometer writes down each stress, draw stress-strain diagram with xyT type chart recording instrument, calculate deformation rate.
4. the gained data are used SPSS13.0 medical statistics software processes, and inspection level is: 0.05
Two, result
1, fixed system bearing capacity of the present invention and international ZEPHIR comparison bearing capacity result:
* displacement unit: (mm) * * corner: 2.0 ° of 4.0 ° of 6.0 ° of units: (N/m) t＜t0.05 (8) P＞0.05
2, of the present invention fixedly is deformation rate and international ZEPHIR comparison deformation rate result:
* displacement unit: (mm) * * (%) * * * corner: 3.0 ° of 6.0 ° of units: (N/m)
Three, conclusion
Biomechanics results shows, the present invention and international ZEPHIR comparison, and therefore six kinds of equal zero differences of anti-stress intensity think that this product fixation is firm.
Claims (8)
1. anterior cervical fixation plate that does not have screw, it is characterized in that: the middle position of described fixing head (1) is established and has been put loophole (3), and fixing head (1) is provided with tabular nail (2), and fixing head (1) and tabular nail (2) are integral structure.
2. a kind of anterior cervical fixation plate that does not have screw according to claim 1 is characterized in that: described four tabular nails (2) are arranged on four interior angles of fixing head (1).
3. a kind of anterior cervical fixation plate that does not have screw according to claim 1 and 2, it is characterized in that: described four tabular nails (2) are provided with a pair of respectively in the both sides up and down of fixing head (1), on each tabular nail (2) two pairs of zigzag hooks (4) are set, the formation barb outwards is set in the horizontal direction.
4. a kind of anterior cervical fixation plate that does not have screw according to claim 3, it is characterized in that: described fixing head (1) is by the medical titanium alloy material.
5. a kind of anterior cervical fixation plate that does not have screw according to claim 4 is characterized in that: described fixing head (1) thickness 1.6mm, and width 15mm, length is 22.5+2.5Nmm, N is the natural number smaller or equal to 2.
6. a kind of anterior cervical fixation plate that does not have screw according to claim 5, it is characterized in that: described tabular nail (2) is a platy structure, is trapezoidal.
7. a kind of anterior cervical fixation plate that does not have screw according to claim 6, it is characterized in that: the upper end length of described tabular nail (2) is 0.5mm, lower end length is 0.3mm, length is 13mm, 14 mm or 15mm, the distance that is located at zigzag hook (4) and fixing head (1) on the tabular nail (2) is 5mm and 10mm place, and projection length is 2 mm.
8. according to any described a kind of anterior cervical fixation plate that does not have screw of aforesaid right requirement, it is characterized in that: described fixing means is as follows:
(1), throat outside approach cuts a skin, subcutaneous, platysma according to layer, enters along between vagina vasorum and esophagus trachea sheath, appears vertebral body and intercalated disc;
(2), C type arm perspective confirms that the gap is correct, the excision intervertebral disc;
(3), implant from the body bone in interbody space;
(4), select the above-mentioned suitable types and the anterior cervical fixation plate of size;
(5), determine that tabular nail (2) is in the epicentral position that is driven into;
(6), in the position that the tabular nail of vertebral body (2) is driven in advance, with the special-purpose cutter of operation, cut a hole four and follows closely grooves;
(7), after tabular nail (2) is aimed at four nail grooves, tabular nail (2) is driven into vertebral body, fixing head (1) is adjacent to mutually with the vertebral body front.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102340358A CN102283706A (en) | 2011-08-16 | 2011-08-16 | Boltless anterior cervical vertebrae fixing plate and fixing method thereof |
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| CN2011102340358A CN102283706A (en) | 2011-08-16 | 2011-08-16 | Boltless anterior cervical vertebrae fixing plate and fixing method thereof |
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| CN102283706A true CN102283706A (en) | 2011-12-21 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103340682A (en) * | 2013-07-22 | 2013-10-09 | 胡亚兰 | Posterior cervical vertebra side block screw fixing guide device and screw fixing method |
| CN103654932A (en) * | 2013-12-17 | 2014-03-26 | 周玉梅 | Orthopaedics department steel plate implanting device |
| CN105434024A (en) * | 2014-09-02 | 2016-03-30 | 上海微创骨科医疗科技有限公司 | Internal fixing device for anterior cervical spine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1704027A (en) * | 2004-05-31 | 2005-12-07 | 深圳清华大学研究院 | Internal fixing multi-mechanism system for anterior cervical vertebrae and its production method |
| US20100042159A1 (en) * | 2008-07-17 | 2010-02-18 | Alphatec Spine, Inc. | Bone plate assembly |
| CN101909535A (en) * | 2008-01-17 | 2010-12-08 | 华沙整形外科股份有限公司 | Spinal osteosynthesis device |
-
2011
- 2011-08-16 CN CN2011102340358A patent/CN102283706A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1704027A (en) * | 2004-05-31 | 2005-12-07 | 深圳清华大学研究院 | Internal fixing multi-mechanism system for anterior cervical vertebrae and its production method |
| CN101909535A (en) * | 2008-01-17 | 2010-12-08 | 华沙整形外科股份有限公司 | Spinal osteosynthesis device |
| US20100042159A1 (en) * | 2008-07-17 | 2010-02-18 | Alphatec Spine, Inc. | Bone plate assembly |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103340682A (en) * | 2013-07-22 | 2013-10-09 | 胡亚兰 | Posterior cervical vertebra side block screw fixing guide device and screw fixing method |
| CN103654932A (en) * | 2013-12-17 | 2014-03-26 | 周玉梅 | Orthopaedics department steel plate implanting device |
| CN105434024A (en) * | 2014-09-02 | 2016-03-30 | 上海微创骨科医疗科技有限公司 | Internal fixing device for anterior cervical spine |
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Owner name: HE BAORONG Effective date: 20120220 |
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Effective date of registration: 20120220 Address after: Slightly South Gate Road South Beilin District 710054 Shaanxi city of Xi'an province No. 76 Applicant after: Hao Dingjun Co-applicant after: He Baorong Address before: Slightly South Gate Road South Beilin District 710054 Shaanxi city of Xi'an province No. 76 Applicant before: Hao Dingjun |
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Application publication date: 20111221 |