CN101601604B - Behind-the-neck transverse connector with lower opening - Google Patents
Behind-the-neck transverse connector with lower opening Download PDFInfo
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- CN101601604B CN101601604B CN200910088323XA CN200910088323A CN101601604B CN 101601604 B CN101601604 B CN 101601604B CN 200910088323X A CN200910088323X A CN 200910088323XA CN 200910088323 A CN200910088323 A CN 200910088323A CN 101601604 B CN101601604 B CN 101601604B
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- 230000007547 defect Effects 0.000 abstract 1
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Abstract
The invention discloses a behind-the-neck transverse connector with a lower opening, which consists of two transverse connection components and a transverse-passing transverse connection bar which are mutually connected. Each transverse connection component comprises a transverse connection body, a pressing sleeve and a jack screw, wherein the upper part of the transverse connection body is an upper adapting head part with a threaded hole; seen from the front side, two sides of the lower part of the upper adapting head part are provided with elastic clips for clasping longitudinal connection bars; seen from the side direction, the middle part of the transverse connection body is provided with a through hole for the transverse connection bar to pass; the pressing sleeve is sleeved on the elastic clips at two sides of the transverse connection body; and the jack screw is screwed into the threaded hole of the upper adapting head part of the transverse connection body to lock each part of the transverse connection components. The behind-the-neck transverse connector with low incisure and the lower opening can overcome the defects of the prior art, is convenient for a doctor to carry out orthopaedic operation of the neck, and relatively reduces the wound to a patient.
Description
Technical field
The present invention relates to a kind of medical device technology, relate in particular to horizontal-associate device behind a kind of neck that is used for orthopaedics spinal column internal fixation device system.
Background technology
The horizontal-associate device is the important component part of spinal column nail-stick system.Important function clinically is to be used to connect two pedicle of vertebral arch pitmans, so that this system constitutes the rock-steady structure of " well " font.
The horizontal-associate device of the posterior cervical nail-stick system of seeing in the market mainly contains two kinds.A kind of structure is as shown in Figure 6: be made of 300,400, connecting bolt 500 of 100,200, two jackscrews of two hook-shape bodies five parts.In the middle of the hook-shape body 100 chute is arranged, hook-shape body 200 also has screw thread, by bolt 500 hook- shape body 100 and 200 is linked to be an integral body.During clinical operation, vertically pitman (being referred to as the pedicle of vertebral arch pitman in the cervical region orthomorphia) is snapped in by the side opening of hook-shape body, and is fastening and locate after moving to correct position by bolt 500 in chute 600 again.
Also has a kind of horizontal-associate device, name is called " being used in the lateral connector on the spine correcting device " (number of patent application: patent application 95102021.8), as shown in Figure 7, it comprises two connectors that can be connected with vertical part, and a long shaped plate interconnects perpendicular to vertical part and with two connectors.Each connector includes the hook portion that contains vertical part, and the fixed screw in top is clamped to vertical part on the hook portion of connector.
Two kinds of above-mentioned lateral connectors all belong to the side opening mode, the defective that exists is: 1. owing to be the side opening structure, so operation move down after when snapping in the pedicle of vertebral arch pitman, needing the horizontal multidirectional outside to expand certain distance again, laterally travelling backwards is to blocking the pedicle of vertebral arch pitman.Not only inconvenient operation also can make the wound mouth want big relatively, and the recovery time of wound mouth can be longer.2. horizontal-associate device shown in Figure 6 places interpyramidal middle body plate wide bigger, because cervical vertebra awl spacing is little, has to remove a cervical vertebra processus aboralis in the operation, thereby has reduced surgical effect.Horizontal-associate device shown in Figure 7 is a kind of horizontal-associate device of high incisura, uses inconvenience clinically.
Summary of the invention
The purpose of this invention is to provide horizontal-associate device behind the neck of a kind of low incisura, under shed, it can overcome the deficiencies in the prior art, makes things convenient for the operation of doctor's cervical region orthomorphia.
For achieving the above object, the present invention takes following design:
A kind of behind-the-neck transverse connector with lower opening is made up of two horizontal-associate assemblies and a pitman that is horizontally through the horizontal-associate assembly;
Described horizontal-associate assembly includes:
A horizontal-associate main body, its top have accepts head on threaded hole; From the front, on accept head the below bilateral have the resilient clip (door font bivalve) that is used to hold tightly the pedicle of vertebral arch pitman; From side direction, there is a through hole that supplies the horizontal-associate rod to pass at the middle part of horizontal-associate main body; Described resilient clip is a kind of elastic chuck with outer cone.
A clamping sleeve during assembling, makes interior receipts of resilient clip of horizontal-associate main body, simultaneously clamping sleeve is set on the resilient clip;
A jackscrew can be screwed in the screwed hole on horizontal-associate main body top.
Described horizontal-associate rod is the square bar that a cross section length of side is not more than 3 * 3mm, or cross section maximum gauge is not more than pole or the ellipse bar of 3mm.The through hole that horizontal-associate main body middle part is passed for the horizontal-associate rod should be consistent with the shape of corresponding rod, and the corresponding square opening of square bar is good.
Advantage of the present invention is:
1, because the configuration of each parts through well-designed, makes the connection of each parts need not complicated location, fixing effective and firm.
2, because the design of under shed, make easy and simple to handlely, and make the wound mouth want littler relatively, recovery time, shortening alleviated patient's misery.
3, the unique design of clamping mode, making to increase corrective force, both stable, can realize the fine setting of the dynamics of correcting again.
4, laterally the coupling part changes the design of horizontal-associate bar type into by plank frame of the prior art, and the horizontal-associate rod is the square rod that a cross section is not more than 3 * 3mm, and its size is suitable for passing from cervical intervertebral, thereby makes the posterior cervical nail-stick system more perfect.
5. this structure is low incisura, is more suitable for the human cervical spine way of escape and uses.
Description of drawings
Fig. 1 is a behind-the-neck transverse connector with lower opening structural representation of the present invention (under the user mode).
Fig. 2 is the structural representation (decomposition texture) of the horizontal-associate assembly of behind-the-neck transverse connector with lower opening.
(a is a front view to Fig. 3 for the jackscrew structural representation of horizontal-associate assembly; B is a vertical view).
(a is main cutaway view to Fig. 4 for the clamping sleeve structural representation of horizontal-associate assembly; B is a vertical view).
(a is a front view to Fig. 5 for the horizontal-associate agent structure sketch map of horizontal-associate assembly; B is a side view; C is a vertical view; The front view that d cuts open for office; E is axonometric drawings such as solid).
Fig. 6 is a horizontal-associate device structural representation of the prior art (a is main looking, and b is for overlooking).
Fig. 7 is another horizontal-associate device structural representation of the prior art (a is the user mode reference diagram, and b is the connector perspective view).
Fig. 8 is the side opening contrast sketch map (a is the technology of the present invention, and b is a prior art) of behind-the-neck transverse connector with lower opening of the present invention and prior art.
Below in conjunction with drawings and the specific embodiments the present invention is described in further details:
The specific embodiment
Consult shown in Figure 1ly, behind-the-neck transverse connector with lower opening of the present invention is interconnected by two horizontal-associate assemblies 1 and a horizontal-associate rod 2 being horizontally through horizontal-associate assembly connecting hole (through hole) to be formed.
Referring to Fig. 2, described each horizontal-associate assembly is formed by jackscrew 11, horizontal-associate main body 12 and 13 3 parts of clamping sleeve.
Referring to shown in Figure 5, described horizontal-associate main body 12 has accepts head on one, from the front, on accept head the below bilateral have the resilient clip 121 that is used to hold tightly vertical pitman (being parts 3 shown in Figure 1), referring to Fig. 5 a); From side direction, there is a through hole 122 that supplies the horizontal-associate rod to pass at the middle part of horizontal-associate main body, referring to Fig. 5 b); The upper wall of accepting head on described has the screwed through hole 123 that is screwed into for jackscrew (or bolt, screw); Referring to Fig. 5 c), Fig. 5 d); Be more convenient understanding, Fig. 5 e) provided the stereochemical structure reference diagram of these parts.
Described resilient clip 121 bottoms have the elastic chuck of an evagination, in embodiment illustrated in fig. 5, the elastic chuck vertical section of this evagination is approximate "＜" type, has outer cone inclined-plane 1211, and the inwall form is complementary with vertical pitman (parts 3 shown in Figure 1) outer wall shape of being held tightly.Vertical pitman general section that existing nail-stick system uses is rounded, so the connection of each parts cooperates to better implement the present invention, it is circular-arc for good that the elastic chuck inboard of described resilient clip evagination is.When vertical pitman section morphology of nail-stick system use changed, the elastic chuck inboard of this resilient clip evagination can also be that correspondence is other shapes, as is polygon-shaped.
The described through hole 122 that passes for the horizontal-associate rod also should be complementary with the shape of pitman.The horizontal-associate rod should be the rod that a cross section length of side or diameter are not more than 3mm, and such as the circular rod that square bar or the diameter of 3 * 3mm is not more than 3mm, also maximum gauge is not more than ellipse bar of 3mm or the like, and the described through hole that passes for the horizontal-associate rod promptly is correspondingly-shaped.The horizontal-associate rod cross section of designing in the present embodiment is the square bar (preferable sectional dimension) of a 3 * 3mm.
Described clamping sleeve 13 is set on the resilient clip 121 of horizontal-associate main body both sides.The present invention has also done a large amount of creationary designs on to the processing of configurations of components, more effective and firm for the fastening effect that makes clamping sleeve, and sufficient consideration has also been done on the composition surface of clamping sleeve.1, the corresponding vertically shaped design of part of the bottom face of clamping sleeve is the inner groovy shape, it be circular-arc in the present embodiment, cooperating the vertical pitman of placement with inboard that elastic chuck is circular arc, and it is better fastening.2, inboard, clamping sleeve bottom 131 is the circular cone inclined-plane, makes that impetus is that (elastic chuck of above-mentioned outer cone has a major diameter conical surface for face contact rather than point or line contact; Inboard correspondence is the conical surface of a minor diameter below this clamping sleeve, the major diameter conical surface of the downward compression elasticity clamp of the minor diameter conical surface of clamping sleeve when being locked), so promptly be connected firmly and reliable, wear-resistant relatively again, long service life, its concrete structural form can be referring to shown in Figure 4.
Described jackscrew 11 is used to lock each assembly of elements of horizontal-associate assembly, and this jackscrew 11 both can adopt the tight screw thread of standard component, also can specially as required process, and as shown in Figure 3, structure has fine-tuning capability for being threaded.
The various embodiments described above can not depart from the scope of the present invention down in addition some variations, thus more than explanation comprise and accompanying drawing shown in structure should be considered as exemplary, but not in order to limit patent protection scope of the present invention.
The operation principle of behind-the-neck transverse connector with lower opening of the present invention is: horizontal-associate main body 12 forms a proximate collet with clamping sleeve assembling back.During use, load onto the horizontal-associate rod in the through hole 122 at horizontal-associate main body 12 middle parts, when being screwed into jackscrew 11, jackscrew is to pressing down the horizontal-associate rod, and the horizontal-associate rod pushes away clamping sleeve again, because the effect of tapering, male cone (strobilus masculinus) pressurized on the two-side elastic dop of horizontal-associate main body, dop will inevitably inwardly be received, and under shed firmly blocks and hold tightly vertical pitman of nail-stick system simultaneously, reaches laterally firmly purpose of connecting.
In the use, earlier the horizontal-associate rod is penetrated in the through hole of two horizontal-associate assemblies, adjust the suitable distance of two horizontal-associate assemblies, make two under sheds of resilient clip aim at the pedicle of vertebral arch pitman, use hold rod pincers downwards by, bayonet socket promptly is stuck on the pedicle of vertebral arch pitman, twist jackscrew again, at this moment, jackscrew is to pressing down the horizontal-associate rod, and the horizontal-associate rod is to pressing down clamping sleeve, the clamping sleeve bottom is the conical surface (refers to clamping sleeve below the minor diameter conical surface), because the tapering effect is received in the major diameter conical surface of resilient clip bottom is inevitable, holds the pedicle of vertebral arch pitman of nail-stick system tightly.
By the above-mentioned process of manipulating as can be seen: the travel track of behind-the-neck transverse connector with lower opening of the present invention is that straight line is downward, as Fig. 8 a) shown in, only need expand outwardly the l distance again (the l distance is equivalent to the wall thickness of resilient clip at the position that the pedicle of vertebral arch pitman is pressed into, because of its can do very meticulous, may be limited in 1～2mm), so can not cause too big wound face for the patient, recovering can be faster, the present invention is low incisura thus, is more suitable for the human cervical spine way of escape and uses.And prior art is quite different, at least (the L distance is equivalent to the integral width of horizontal-associate device parts will to expand one section L in the pedicle of vertebral arch pitman outside, because of it must process the hook portion that can hold the pedicle of vertebral arch pitman, so broad of doing, even reach more than the 1cm), and also need move down H distance (the bow height that is equivalent to the bottom dog arc) to side opening and the involutory position of pedicle of vertebral arch pitman, obviously, on the such position of human cervical spine, laterally add changing of the relative positions meeting longitudinally and cause bigger wound face to the patient.
In sum, as a medical apparatus and instruments, behind-the-neck transverse connector with lower opening of the present invention designs more rationally, science, more perfect more.
Claims (5)
1. behind-the-neck transverse connector with lower opening is interconnected by two horizontal-associate assemblies and a horizontal-associate rod being horizontally through and to form; It is characterized in that:
Described each horizontal-associate assembly includes:
A horizontal-associate main body, its top have accepts head on threaded hole; From the front, on accept head the below bilateral have the resilient clip that is used to hold tightly the pedicle of vertebral arch pitman; From side direction, there is a through hole that supplies the horizontal-associate rod to pass at the middle part of horizontal-associate main body;
A clamping sleeve is enclosed within on the horizontal-associate main body bilateral resilient clip;
A jackscrew is screwed in the screwed hole of accepting head on the horizontal-associate main body, to be used to lock each parts of horizontal-associate assembly.
2. behind-the-neck transverse connector with lower opening according to claim 1 is characterized in that: described resilient clip bottom is the elastic chuck with outer cone.
3. behind-the-neck transverse connector with lower opening according to claim 2 is characterized in that: described elastic chuck with outer cone has a major diameter conical surface; Inboard below the described clamping sleeve to the conical surface of a minor diameter being arranged, the major diameter conical surface of the downward compression elasticity clamp of the minor diameter conical surface of clamping sleeve when being locked.
4. behind-the-neck transverse connector with lower opening according to claim 1 is characterized in that: described horizontal-associate rod is the square bar that a cross section length of side is not more than 3 * 3mm, or cross section maximum gauge is not more than pole or the ellipse bar of 3mm.
5. behind-the-neck transverse connector with lower opening according to claim 1 is characterized in that: described horizontal-associate rod is a square bar that the cross section is 3 * 3mm; The described through hole that passes for the horizontal-associate rod is the square hole that matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910088323XA CN101601604B (en) | 2009-06-26 | 2009-06-26 | Behind-the-neck transverse connector with lower opening |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910088323XA CN101601604B (en) | 2009-06-26 | 2009-06-26 | Behind-the-neck transverse connector with lower opening |
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| Publication Number | Publication Date |
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| CN101601604A CN101601604A (en) | 2009-12-16 |
| CN101601604B true CN101601604B (en) | 2011-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910088323XA Active CN101601604B (en) | 2009-06-26 | 2009-06-26 | Behind-the-neck transverse connector with lower opening |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106667564B (en) * | 2017-01-06 | 2023-11-28 | 创生医疗器械（中国）有限公司 | Explosion-proof silk pedicle screw |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1087806A (en) * | 1992-10-22 | 1994-06-15 | 丹内克医学有限公司 | In order to support the spinal rod transverse connector of spinal fixation element |
| CN1116515A (en) * | 1994-06-28 | 1996-02-14 | 美商·艾克罗米德公司 | Transverse connector for spinal column corrective devices |
| FR2736535A1 (en) * | 1995-07-10 | 1997-01-17 | Martin Jean Jacques | Spinal osteosynthesis device to immobilise portion of spine e.g. in case of pathological degeneration between vertebrae |
| CN1468079A (en) * | 2000-08-18 | 2004-01-14 | �㶫��������ҽҩ�ɷ�����˾ | A surgical cross-connecting apparatus |
| EP1857064A1 (en) * | 2006-05-15 | 2007-11-21 | Biomet Spain Orthopaedics S.L. | Surgical screw system |
| CN101194852A (en) * | 2006-12-05 | 2008-06-11 | 邹德威 | Transversal connecting apparatus between pedicles of vertebral arch and the vertebral column straightening system |
| CN101426441A (en) * | 2006-04-24 | 2009-05-06 | 华沙整形外科股份有限公司 | Connector apparatus |
| CN201453354U (en) * | 2009-06-26 | 2010-05-12 | 郭谦 | Cervical vertebral canal posterior bottom-opening transverse connector |
-
2009
- 2009-06-26 CN CN200910088323XA patent/CN101601604B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1087806A (en) * | 1992-10-22 | 1994-06-15 | 丹内克医学有限公司 | In order to support the spinal rod transverse connector of spinal fixation element |
| CN1116515A (en) * | 1994-06-28 | 1996-02-14 | 美商·艾克罗米德公司 | Transverse connector for spinal column corrective devices |
| FR2736535A1 (en) * | 1995-07-10 | 1997-01-17 | Martin Jean Jacques | Spinal osteosynthesis device to immobilise portion of spine e.g. in case of pathological degeneration between vertebrae |
| CN1468079A (en) * | 2000-08-18 | 2004-01-14 | �㶫��������ҽҩ�ɷ�����˾ | A surgical cross-connecting apparatus |
| CN101426441A (en) * | 2006-04-24 | 2009-05-06 | 华沙整形外科股份有限公司 | Connector apparatus |
| EP1857064A1 (en) * | 2006-05-15 | 2007-11-21 | Biomet Spain Orthopaedics S.L. | Surgical screw system |
| CN101194852A (en) * | 2006-12-05 | 2008-06-11 | 邹德威 | Transversal connecting apparatus between pedicles of vertebral arch and the vertebral column straightening system |
| CN201453354U (en) * | 2009-06-26 | 2010-05-12 | 郭谦 | Cervical vertebral canal posterior bottom-opening transverse connector |
Non-Patent Citations (1)
| Title |
|---|
| 丁宇.横向连接装置在腰椎经椎弓根内固定系统中的作用.《临床生物力学》.2002,第20卷(第6期), * |
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| CN101601604A (en) | 2009-12-16 |
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Owner name: BEIJING LIBEIER BIO-ENGINEERING INSTITUTE CO., LTD Free format text: FORMER OWNER: GUO QIAN Effective date: 20121012 |
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