CN1323650C - Expandable rack for vertebra operation - Google Patents
Expandable rack for vertebra operation Download PDFInfo
- Publication number
- CN1323650C CN1323650C CNB2003101179792A CN200310117979A CN1323650C CN 1323650 C CN1323650 C CN 1323650C CN B2003101179792 A CNB2003101179792 A CN B2003101179792A CN 200310117979 A CN200310117979 A CN 200310117979A CN 1323650 C CN1323650 C CN 1323650C
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- CN
- China
- Prior art keywords
- aforementioned
- dividing plate
- bracket
- stake body
- partition plate
- 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.)
- Expired - Fee Related
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Neurology (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The present invention provides an expandable bracket for a vertebra operation. The expandable bracket is inserted into an intervertebral bone jointing bracket, and an expandable partition plate at a branching part is easy to move. The structural stability of the branching part after expansion is enhanced, and the swelling amount of the branching part is large. The expandable bracket comprises a bracket body and a partition plate, wherein the bracket body is composed of an opening base part arranged at an opening part, and a branching part which is formed by the integral extension of a plurality of branches at one side of the opening base part; the partition plate is inserted, and can move at a hollow part, wherein locked prominency parts are arranged at the inner surfaces of the free end parts of the branches arranged at the bracket body. The locked prominency parts are respectively in the shape that an integral body is radial and the tail ends are obcurrent. The integral end of the partition plate inserted into the hollow part forms a leading end part, and a main body forms a column or an angle column. If the partition plate is inserted between the locked prominency parts which are radially obcurrent, the branching part of the bracket body is radial, and is extruded towards an outer side. The bracket body is integrally expanded, and vertebrae are fixed.
Description
Technical field
The present invention relates to a kind of after the excision of the intercentrum (spinal disk) after the damage, the artificial fusion implant (Implant) that in the interbody space of remnants, is provided with, more specifically, be that a kind of diameter of a side can expand and becomes the support that big inflatable operation on vertebra is used.
Background technology
Owing to make the fracture of the impaired vertebra of human body stable for a long time, can merge (being engaged with each other) via the plural at least bone of the cross structure of the bone that is reinforced.This is people's interbody fusion (interbody fusion) that the practitioner knows.Wherein, in order to recover more normal spatial relationship, the part of intercalated disc is cut off, the position of bone is in the space that a disk material (between adjacent vertebrae) has occupied, provide the safety of short-term by the support of machinery, the stability that provides over a long time is provided the permanent intersection by the bone between vertebra again.When in the space of intercalated disc, merging, the sclerosis of permission by bone outer disk make and damage or wherein cut off superimposed bone graft (bone graft) and contact with many angioarchitecture somatic cell (sponge) bone, by Grafted bone manufacturing and treatment, cure the serialgram that the controllable fracture that produces like this forms bone thus.
Current, in reasonable time, transplant and make the common graft that merges of vertebrae, perhaps the intervertebral fusion of aforementioned ridge is carried out in reasonable time, like this, make the aforementioned ridge vertebra can substitute fixed to one another immediately by transplanting, be used to recover some technology of normal lordosis as described above by known.
In the above-mentioned various technology, main what use is that " support " that constitute as the monolithic entity by the rigid material of part hollow is by known graft.This support has and is used for the slit that the hold bone graft is interconnected inside/outside portion, and aforementioned bone graft merges the vertebrae of contiguous both sides via aforementioned slit.With this spot correlation, can be " conical intervertebral fusion support (Inter vertebral fusion cage of conical shape) " with reference to denomination of invention, in disclosed patent documentation 1 on March 21st, 1996, and denomination of invention is " spinal column with amboceptor graft (Intersomatic implant for the spinal column) ", in disclosed patent documentation 2 on February 8 nineteen ninety-five.But such support has been prescribed its external dimensions and has fixed, vertebrae between distance not necessarily.And, be prescribed certain angle position, for the gradient of relative vertebra surface of bone, rigid support can not use from behind, can only insert from the place ahead.
As a result, developed the support of other type.In this support, the branching portion of two almost parallels is connected with inflexible main part, can make worm and gear system (worm-screw-system) rotation thus.Aforementioned worm and gear system, make wedge portion (wedge) in the worm and gear system with the primary position of the state of screwing togather from the terminal part of contiguous aforementioned branches portion, towards aforementioned branches portion connected aforementioned body portion jointly move, aforementioned two branching portions are opened at an angle.Therefore, the support that the initial stage has flat shape can be inserted between the vertebrae, by making the driving shaft rotation of aforementioned wedge portion, by from behind near regulating or set the desired angle of branching portion.
This support or graft, for example be " support between vertebral body (Vertebral intersomatic cage) " in denomination of invention, in disclosed patent documentation 3 on August 2 nineteen ninety-five, perhaps denomination of invention is " grafting of bone of vertebra thing (Vertebral implant) ", is disclosed on the disclosed patent documentation 4 November 17 nineteen ninety-five.
But, in this device owing to utilize more mechanicalness of hollow and inflexible support, and it is more complicated, stay and be used to merge Grafted littler internal volume, even the bearing angle that is asserted between vertebrae to be provided is better, because its shape is not circular symmetry but do not have flat shape, must be provided for holding the path of its identical rectangle section, it is complicated that its enforcement becomes.
Therefore, following problem is proposed: 1) for easy transplanting, 2) for bigger internal volume is provided, after support is set up in place, for being positioned in abutting connection with its end in the insertion place of its surgery, the diameter value according to the rules of the aforementioned terminal part of support is increased relatively, have the element of minority as far as possible, the graft or the support of the shape that adopts common rigid support can be provided.
In order to address these problems, the denomination of invention disclosed existing known technology that is " expandable bone splice holder " on March 19th, 1998 disclosed patent documentation 5, as depicted in figs. 1 and 2, a kind of bone splice holder comprises: the pedestal part 7 that is made of the main body of hollow; The poroid opening 8 that is provided with at an end of aforementioned pedestal part; The main body of the other end one side of pedestal part branches into a plurality of and branching portion 5 that be provided with; With dividing plate 2, be assembled as can be in as the internal volume portion 9 of the inner space of aforementioned pedestal part 7 move left and right, to the other end one side shifting of opening 8, and branching portion 5 extruded laterally, thereby the other end of pedestal part 7 expanded.
Aforementioned " expandable bone splice holder " solved the existing problem points of part, but and not exclusively.Particularly, dividing plate 2 is assembled as can be unidirectional mobile in the inner space 9 of taper, push branching portion 5 one sides and the dividing plate 2 that branching portion 5 is extruded to foreign side be positioned at branching portion 5 one sides structurally incomplete, after the operation, the problem points that dividing plate 2 is pushed to the inside, as shown in Figure 2, a plurality of inboards of adopting the branching portion 5 of branch shape, form taper, expansion end one side the closer to branching portion 5 forms thickly more, when moveable partition board 2 expands branching portion 5,, the swell increment increase of branching portion 5 also is restricted owing to be subjected to the restriction of this structure.
[patent documentation 1] international pamphlet that discloses No. 96/08205
[patent documentation 2] european patent application discloses description No. 637440
[patent documentation 3] european patent application discloses description No. 664994
[patent documentation 4] french patent application discloses description No. 2719763
[patent documentation 5] international pamphlet that discloses No. 1998/10772
Summary of the invention
The present invention proposes in order to solve the above problems, its purpose is, when the expansible dividing plate of branching portion being moved make branching portion expansible, dividing plate is easier to be moved, improve the stability of structure of the back branching portion that expands, make the swell increment of branching portion bigger.
To achieve these goals, the support that the inflatable operation on vertebra that the present invention relates to is used, be used for the intercentrum corrective surgery, insert the device that is used for fixing interbody bone between the vertebra when being operation, comprise stake body, (stake body) is made of pedestal part that opening is set at peristome and the branching portion that is made of a plurality of branches at a side one body extension of aforementioned pedestal part, in this branching portion hollow bulb is set; And dividing plate, dividing plate is plugged in aforementioned hollow bulb and can moves, it is characterized in that, inner face at the ramose free end that is arranged at stake body is provided with locking projection portion, aforementioned locking projection portion adopts and all is the shape that radial its terminal part compiles, an end that is inserted into the dividing plate integral body of hollow bulb forms leading section, main body forms cylinder or square column, if dividing plate is inserted into aforementioned being between the radial locking projection portion that compiles, then the branching portion of stake body is the radial outside that is pressed against, stake body all expands, and makes between the vertebra fixing.
The inflatable operation on vertebra support that the present invention relates to, under the state of being transplanted to people's amboceptor, dividing plate moves in the hollow bulb of stake body, stably insert the annular groove of dividing plate as the locking projection portion of ramose free end, thereby branching portion is expanded, and Just because of this, is favourable.
In addition, according to the present invention,,, also can keep expansible stable even bear big load from the top if be inserted into interbody bone.
In addition,, more stably push the shift action that locking projection portion makes the expansible dividing plate of stake body, more stably keep the swelling state of stake body according to the 2nd embodiment of the present invention.
Description of drawings
Fig. 1 is the decomposition diagram of the existing expandable bone splice holder of expression.
Fig. 2 is the assembling view of the existing expandable bone splice holder of expression.
Fig. 3 is the decomposition diagram of the expandable bone splice holder that relates to of expression the present invention the 1st embodiment.
Fig. 4 is the assembling view of the expandable bone splice holder that relates to of expression the present invention the 1st embodiment.
Fig. 5 is the cutaway view along the A-A line of Fig. 4.
Fig. 6 is the cutaway view of the operating state of the bone splice holder that relates to of expression the present invention the 1st embodiment along the A-A line of Fig. 4.
Fig. 7 is the assembling view of the deformation form of the bone splice holder that relates to of expression the present invention the 1st embodiment.
Fig. 8 a to Fig. 8 c is the perspective view of various embodiments of the dividing plate of the support that the present invention relates to of expression.
Fig. 9 is the decomposition diagram of the bone splice holder that relates to of expression the present invention the 2nd embodiment.
Figure 10 is the perspective view of the operating state of the bone splice holder that relates to of expression the present invention the 2nd embodiment.
The specific embodiment
Below, the present invention will be described in detail with reference to the accompanying drawings.
Fig. 3 is the decomposition diagram that the intumescent bone that relates to of expression one embodiment of the present of invention engages, and Fig. 4 is the assembling view of Fig. 3, and Fig. 5 is the cutaway view along the A-A line of Fig. 4, and Fig. 6 is the cutaway view of the operating state of bone splice holder in the state of presentation graphs 5.
To shown in Figure 6, the support that the inflatable operation on vertebra that the present invention relates to is used comprises: the stake body 100 of tubular, dividing plate 200 and stopper 300 as Fig. 3.Aforementioned brackets body 100 have as shown in Figure 3 square barrel shape or drum as shown in Figure 7, and has following structure, possessing of being provided with of a side (among Fig. 3 positive) as the pedestal part 120 of the opening 100 of the assembly hole of aforementioned stopper 300 with at opposite side and aforementioned pedestal part 120 the branching portion 130 that constitutes by a plurality of branching portions 131 in abutting connection with settings.
Have the stake body 100 of this structure, adopt barrel shape on the whole, inside has the hollow bulb 100v as the assembling space of aforementioned separator plate 200.
The upper surface and the lower surface that constitute the pedestal part 120 of stake body 100 are made of tabular surface.In addition, upper surface and the lower surface at branching portion 130 is provided with a plurality of triangular grooves and becomes fixed part 132.Pass through moving of dividing plate and the interval between the branch 131 of formation aforementioned branches portion 130 and the branch 131, thereby expose hollow bulb 100V.
Form locking protuberance 131h at the inner face of the free end portion of the aforementioned branches 131 of stake body 100 towards central authorities.Thus, the locking protuberance 131h of aforementioned a plurality of branches 131 is radial and compiles, and forms a side of stake body.Therefore, as shown in Figure 5, in the other end one side as the stake body of the opposite side of pedestal part 120, the locking protuberance 131 of each branch 131 is radial towards central authorities and compiles.
As Fig. 3 and shown in Figure 5, aforementioned separator plate 200 is to have bullet shape, is plugged the parts of the hollow bulb 100v of stake body 100.In addition, the leading section of aforementioned separator plate 200 is elliptical shapes, and rearward end is the plectane face, at the outer peripheral face of a side of the rearward end main body adjacent with free end annular groove 200h is set.
As shown in Figure 6, has the support that the of the present invention inflatable operation on vertebra of this structure is used, if dividing plate 200 is plugged in the hollow bulb 100v of stake body 100, make its outer side shifting then to the free end of branching portion 130, the locking protuberance 131h of the free end of each branch 131 can insert the annular groove 200h of dividing plate 200, and the end of each branch 131 of branching portion 130 enlarges and expands.
Fig. 8 a to Fig. 8 c represents the various embodiments of the dividing plate that the present invention relates to.Fig. 8 a is by the distortion of aforementioned bullet shape, dividing plate 200 ' head just below locking projection 201 ' along the circumferential direction is set at interval, the base portion of dividing plate 200 ' plays a role as lockplate 202 ', and the diameter of setting lockplate 202 ' is bigger than the diameter of aforementioned head.Represent the 131h of locking projection portion of clamp bracket body 100 between aforementioned locking projection 201 ' and the lockplate 202 ' and stake body 100 is expanded, Fig. 8 b represents the dividing plate 200 of square pyramidal shaped ", Fig. 8 c represents the dividing plate of pencil-type.
In the above-described embodiments, support is constituted slightly hexahedral shape, but do not limit therewith, can constitute slightly drum or hexagonal barrel shape to support yet, in addition, these all do not break away from interest field of the present invention.
In addition, in the aforementioned embodiment, the branch 131 that constitutes branching portion 130 is 4, does not limit therewith, also can be by the number more than 4, and for example 6 or 8 branches constitute.
After the support that operation on vertebra of the present invention is used inserts human body and undergos surgery, between interbody bone, fill bone meal.After the human body operation, the door that prevents that bone meal from leaking can be provided, leak between interbody bone so that prevent the bone meal that is filled.
Fig. 9 is the decomposition diagram of the operation on vertebra that relates to of expression the 2nd embodiment of the present invention with support, and Figure 10 is the perspective view that is used to illustrate its user mode.
As shown in Figure 9, identical with the 1st embodiment is, the stake body 100-1 of the support that the 2nd embodiment of the present invention relates to is provided with hollow bulb 100-1v in inside, the side of its longitudinal direction is made of four branching portion 131-1, different with the 1st embodiment is, prolong from each peristome 133-1 of four lateral surface being arranged on stake body 100-1 longitudinal direction, opposite side end face in the pedestal part of stake body 100-1 is provided with elongated pilot notched 133-1s respectively, makes whole four pilot notched 133-1s be cross.
The dividing plate 200-1 of the 2nd embodiment that the present invention relates to, main body is a cylindrical shape, the lockplate 202-1 of circular plate type prolongs from an end of main body again, establish guide pad 200-1g from two pleurapophysis of the lockplate 202-1 of aforementioned circular plate type, establish cross from another distal process of aforementioned body and advance with cross head 201-1 with Rack and length.
State after the support that Figure 10 represents to have the 2nd embodiment of the present invention of above structure expands.As shown in figure 10, the support that the 2nd embodiment of the present invention relates to, dividing plate 200-1 is assembled in the hollow bulb 100-1v of stake body, guide pad 200-1g is inserted into two the elongated pilot notched 133-1s in the opposite side end face setting of the pedestal part of stake body 100-1, and move to the terminal part of branching portion 131-1, like this, four branching portion 131-1 are released to the radial outside, and the cross head 201-1 of dividing plate 200-1 expands stake body 100-1.
Claims (1)
1. inflatable operation on vertebra support, comprise: square tubular or columnar stake body, this stake body is by the pedestal part that is provided with opening at first peristome, constitute with the branching portion that constitutes by a plurality of branches at a side one body extension of aforementioned pedestal part, in the aforementioned branches portion hollow bulb is set, between the branch and branch of the lateral surface of longitudinal direction, second peristome that is communicated with aforementioned hollow bulb is set; And dividing plate, dividing plate is plugged in aforementioned hollow bulb and can moves, and stake body is expanded,
Prolong from each second peristome of four lateral surface of the longitudinal direction that is arranged on stake body, four elongated pilot notcheds are set in the side relative with the pedestal part of stake body, the whole cross that forms of otch,
The main body of described dividing plate is a cylindrical shape, the lockplate of major diameter further prolongs from an end face of main body, establish guide pad from two pleurapophysis of the aforementioned lockplate of circular plate type, the prominent criss-cross propelling cross head of establishing with Rack and length from the other end of aforementioned body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101179792A CN1323650C (en) | 2003-11-26 | 2003-11-26 | Expandable rack for vertebra operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101179792A CN1323650C (en) | 2003-11-26 | 2003-11-26 | Expandable rack for vertebra operation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1621015A CN1621015A (en) | 2005-06-01 |
| CN1323650C true CN1323650C (en) | 2007-07-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101179792A Expired - Fee Related CN1323650C (en) | 2003-11-26 | 2003-11-26 | Expandable rack for vertebra operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1323650C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7794501B2 (en) * | 2006-04-27 | 2010-09-14 | Wasaw Orthopedic, Inc. | Expandable intervertebral spacers and methods of use |
| US8551562B2 (en) | 2009-07-17 | 2013-10-08 | Illnois Tool Works Inc. | Method for metering hot melt adhesives with variable adhesive volumes |
| US10245159B1 (en) | 2009-09-18 | 2019-04-02 | Spinal Surgical Strategies, Llc | Bone graft delivery system and method for using same |
| US8906028B2 (en) | 2009-09-18 | 2014-12-09 | Spinal Surgical Strategies, Llc | Bone graft delivery device and method of using the same |
| US10973656B2 (en) | 2009-09-18 | 2021-04-13 | Spinal Surgical Strategies, Inc. | Bone graft delivery system and method for using same |
| US9788971B1 (en) | 2013-05-22 | 2017-10-17 | Nuvasive, Inc. | Expandable fusion implant and related methods |
| US9801734B1 (en) | 2013-08-09 | 2017-10-31 | Nuvasive, Inc. | Lordotic expandable interbody implant |
| CN104665961B (en) * | 2013-12-02 | 2016-11-09 | 苏州点合医疗科技有限公司 | A kind of anti-displacement bulk expansion formula inter vertebral fusing device |
| CN104997577B (en) * | 2014-04-25 | 2018-03-02 | 苏州点合医疗科技有限公司 | A kind of non-resilient and elastomeric composition formula interspinous support device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1230880A (en) * | 1996-09-13 | 1999-10-06 | 大卫·阿塔里 | Expansive osteosynthesis sheath |
| FR2815845A1 (en) * | 2000-10-27 | 2002-05-03 | Comptoir Hospitalier Orthopedi | Expanding intersomatic cage for insertion between adjacent vertebrae to correct lumbar lordosis angle comprises hollow tube with ribs along it which are expanded by pin inserted into it and left in place to act as scaffold for bone growth |
| WO2002076335A2 (en) * | 2001-03-27 | 2002-10-03 | Michelson Gary K | Radially expanding interbody spinal fusion implants and instrumentation for insertion thereof |
-
2003
- 2003-11-26 CN CNB2003101179792A patent/CN1323650C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1230880A (en) * | 1996-09-13 | 1999-10-06 | 大卫·阿塔里 | Expansive osteosynthesis sheath |
| FR2815845A1 (en) * | 2000-10-27 | 2002-05-03 | Comptoir Hospitalier Orthopedi | Expanding intersomatic cage for insertion between adjacent vertebrae to correct lumbar lordosis angle comprises hollow tube with ribs along it which are expanded by pin inserted into it and left in place to act as scaffold for bone growth |
| WO2002076335A2 (en) * | 2001-03-27 | 2002-10-03 | Michelson Gary K | Radially expanding interbody spinal fusion implants and instrumentation for insertion thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1621015A (en) | 2005-06-01 |
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