CN104306054A - Expandable vertebroplasty stent - Google Patents
Expandable vertebroplasty stent Download PDFInfo
- Publication number
- CN104306054A CN104306054A CN201410517497.4A CN201410517497A CN104306054A CN 104306054 A CN104306054 A CN 104306054A CN 201410517497 A CN201410517497 A CN 201410517497A CN 104306054 A CN104306054 A CN 104306054A
- Authority
- CN
- China
- Prior art keywords
- support
- nut
- core pipe
- leading portion
- expansible
- 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.)
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Classifications
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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
- A61B17/885—Tools for expanding or compacting bones or discs or cavities therein
- A61B17/8852—Tools for expanding or compacting bones or discs or cavities therein capable of being assembled or enlarged, or changing shape, inside the bone or disc
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
- A61B2017/00867—Material properties shape memory effect
Abstract
The invention relates to a medical instrument, in particular to an expandable vertebroplasty stent. The expandable vertebroplasty stent comprises a stent body, a core tube and a nut, and is characterized in that the stent body is a hollow tube and is at least divided into three parts, i.e. a front end, a main body and a rear end; the main body comprises supporting rods and supporting plates which are longitudinally symmetrical; the core tube comprises a front section and a rear section, and the rear section of the core tube is provided with external threads; the nut comprises a front section and a rear section, the internal threads of the cavity of the nut are matched with the rear section of the core tube, the front section of the nut is connected with the rear end of the stent body, and the rear section of the nut is provided with a notch in which the nut can rotate; the front end of the stent body is fixedly connected with the front section of the core tube. The expandable vertebroplasty stent is a stent which can be adjusted on the aspects of expansion degree and expansion direction and keep the expansion height and does not need to be extracted out of a centrum.
Description
Technical field
The present invention and a kind of medical apparatus and instruments, be specifically related to the Intrapyramidal expansible shaped bracket of a kind of implantation.
Background technology
Spinal fracture can be caused by many factors.Can be divided into according to its cause of disease: 1) physics responsible, as the traumatic fracture that violence causes; 2) age physiologic factor, as osteoporosis; 3) biological factor, as pathology that bacterial inflammation, abscess cause etc.The expectant treatment method of spinal fracture, comprising: lie up, Brace Treatment, osteosporosis resistant medicament treatment etc.Above-mentioned Therapeutic Method, not only patient is difficult to stand, and therapeutic effect is poor.In addition, surgical operation therapy spinal fracture, its Main Means is, adopts open internal fixtion therapy.Its shortcoming is, the wound face of operation is larger; And for osteoporotic compression fracture, because the bone strength of patient reduces, obtain reliably, stably internal fixtion is very difficult.In addition, intravertebral fixture, may deviate from from sclerotin, so that Unstable internal fixation, causes the loss of kyphosis deformity correction degree.
Within 1984, carry out first case percutaneous vertbroplasty in French Amiens university by Galibert and Deramond, placed sleeve pipe injection bone cement by percutaneous and enter the enhancing that vertebral body completes vertebral body.
U.S. Berkeley orthopedist Mark Reiley in 1999 adopts the method for balloon expandable in percutaneous puncture vertebral body, and corpus vertebrae replacement is dropped back return of serve capsule, then injects bone cement and enter vertebral body, i.e. Percutaneous kyplasty.
Patent ZL 200410086120.4 describes metal tennis balled vertebrae shaping apparatus, using high-elastic wire cross to turn to spherical or oval spherical replacement sacculus struts by the vertebral body compressed, then withdraw from metal ball or metal ball is retained in vertebral body, refill bone cement or with other vertebral body reinforcing material.
But there is its own shortcomings in described sacculus wire netting ball: 1) bone cement easily leaks; 2) sacculus is easily punctured by bony spur; 3) support force of sacculus or wire netting ball is non-directional, can oppress the vertebral body position without the need to supporting; 4) can not adjust from the support force playing support, support unstable; 5) vertebral height may be there is in operation to lose again.
Summary of the invention
The present invention be directed to the shortcoming of above-mentioned prior art, provide a kind of adjustable expanded height and dimension, the height of expansion can maintain, and the support without the need to extracting out in vertebral body.
Technical scheme of the present invention is: a kind of expansible vertebral plasty support, it is characterized in that: a kind of expansible vertebral plasty support, comprise support, core pipe and nut, it is characterized in that: described support is hollow pipe, it is at least divided into front end, main body, rear end three part; Described main body comprises support bar and the support chip of upper and lower symmetry; Described core pipe is made up of leading portion and back segment, and its back segment has external screw thread; Described nut has leading portion and back segment, and the female thread of its inner chamber coordinates with the back segment of core pipe, and leading portion is connected with the rear end of support, and back segment is provided with the breach of rotatable nut; The front end of described support is fixedly connected with between the leading portion of core pipe.
Described support is formed through laser engraving by niti-shaped memorial alloy pipe, stainless steel tube or macromolecular material.
Described support chip can connect expanding plate.Connecting expanding plate is to ensure the area expanded.The connected mode of support chip and expanding plate can for weld or bonding.
The front end of described support and the mode that is fixedly connected with of the leading portion of core pipe be bonding, to weld or mechanical pins joins.
The leading portion of described nut is fluted, and the boss of groove and back-end support inner chamber is connected, and the leading portion of nut withstands the inner chamber of back-end support.
The material of described core pipe is marmem pipe, stainless steel tube or other material, the number of openings on its tube wall at least one.
The material of described nut is marmem, rustless steel or other material.
Support regulates its degrees of expansion by swivel nut.Dimension can also be adjusted by swinging mounting.
Compared with prior art, the invention has the advantages that: the expansion of support has directivity, can avoiding oppressing the vertebral body position without the need to strutting, making to strut effect more effective.The height-adjustable of stent-expansion, and can be locked, support force is more stable.Expansion is subsided after vertebral body, and support without the need to extracting in vertebral body, and by the vertebral body of propping up under the elasticity creep extruding of adjacent upper and lower intervertebral disc, its height can be maintained completely, therefore in art, there is not the situation that vertebral height loses again.Support after expansion effectively can strut the vertebral body of compression, recovers vertebral height.Form space in vertebral body inside, required thrust when not only can reduce to inject bone cement, and bone cement is put and is not easily flowed in the inner, can reduce leakage.
Accompanying drawing explanation
The present invention is described in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is before expansible vertebral plasty support 1(struts)
Fig. 2 is after expansible vertebral plasty support 1(struts)
Fig. 3 is support 1
Fig. 4 is core pipe
Fig. 5 is nut
Fig. 6 is before expansible vertebral plasty support 2(struts)
Fig. 7 is after expansible vertebral plasty support 2(struts)
Fig. 8 is support 2
Fig. 9 is the partial sectional view that back-end support is connected with nut leading portion
Figure 10 is the accompanying drawing of patent ZL200410086120.4
detailed description of the invention
According to embodiment and accompanying drawing, the present invention is described in further detail below.
Embodiment one
Composition graphs 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 9, shown in be a kind of specific embodiment of a kind of expansible vertebral plasty support of the present invention, comprise support 1, core pipe 2 and nut 3.Its medium-height trestle 1 can be formed by niti-shaped memorial alloy pipe laser engraving, and its structure comprises front end 11, main body 12, rear end 13, and wherein main body 12 comprises the support bar 121 of upper and lower symmetry and support chip 122 forms.Core pipe 2 can be formed by marmem pipe, stainless steel tube or other materials processing, and core pipe has inner chamber 23, and on its tube wall, have a through hole at least, so that bone cement enters core pipe; The outer surface of the rear end of core pipe has screw thread 22, and this screw thread 22 can coordinate with nut 3.Nut 3 can be made up of marmem pipe, stainless steel tube or other material, and its structure comprises leading portion 31, back segment 32, inner chamber, and wherein nut leading portion 31 is connected with support, connected mode can be bonding, welding or mechanical pins connection; Nut back segment 32 jagged 33, by this breach 33 rotatable nut 3, its inner chamber has screw thread, and nut 3 can the thread helix on core pipe 2 move.Support 1 is enclosed within core pipe 2, and front end 11 and core pipe 2 are completely fixed, and rear end 13 is connected with the leading portion 31 of nut 3, and adjusting nut 3, in the position of core pipe 2, determines the degree of the expansion of support 1.
Niti-shaped memorial alloy pipe laser engraving becomes the tubular structure of support, after setting treatment is carried out to the expansion shape of support, support 1, nut 2 are all enclosed within core pipe 2, front end 11 and the core pipe 2 of support can be fixed with pin, and the boss of rear end 13 inner chamber of support is snapped in the groove of the front end 31 of nut, can realize can only rotating between support 1 and nut 3 and can not the function of axial relative movement.Expansible vertebral plasty support is put into frozen water, and support 3 is stretched as the tubulose before expansion by swivel nut 1, and support 1 and core pipe 2 closely fit together.
By expansible vertebral plasty support by sending in vertebral body outside cone nut or pedicle of vertebral arch, adjust the angle of expansible vertebral plasty support, after determining the direction of the vertebral body needing to strut, swivel nut 3 expandable stent 1, support bar can bend according to direction during setting, support 1 reverts to the expansion shape of sizing under human body temperature, the degrees of expansion of support 1 is determined in the position of adjusting nut (3), the support chip (122) of the support (1) after expansion effectively struts the vertebral body of compression, recover vertebral height, space is formed in vertebral body inside, bone cement or other vertebral body reinforcing material are filled in the inner space of vertebral body, thus the vertebral body of fixing compression fracture.
Embodiment two
Composition graphs 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9, shown in be a kind of specific embodiment of a kind of expansible vertebral plasty support of the present invention, comprise support 1, core pipe 2 and nut 3.Its medium-height trestle 1 can be formed through laser engraving by stainless steel tube, and its structure comprises front end 11, main body 12, rear end 13, and wherein main body 12 comprises the support bar 121 of upper and lower symmetry, support chip 122 and expanding plate 123 and forms.Can expand according to predetermined direction to control support, when laser engraving, support bar 121 and tubular axis line are defined certain angle, cause the width of support chip less, in order to ensure the area of the supporting surface of support, welding or bonding expanding plate 123 on support chip 122.Core pipe 2 can be formed by marmem pipe, stainless steel tube or other materials processing, and core pipe has inner chamber 23, and has the through hole of at least on its tube wall, so that bone cement enters core pipe; The outer surface of core pipe rear end has screw thread 22, and this screw thread 22 can coordinate with nut 3.Nut 3 can be made up of marmem pipe, stainless steel tube or other material, and its structure comprises leading portion 31, back segment 32, inner chamber 33, and wherein nut leading portion 31 is connected with support, connected mode can be bonding, welding or mechanical pins connection; Nut back segment 32 jagged 33, by this breach 33 rotatable nut 3, its inner chamber has screw thread, and nut 3 can move along the thread helix on core pipe 2.Support 1 is enclosed within core pipe 2, and front end 11 and core pipe 2 are completely fixed, and rear end 13 is connected with the leading portion 31 of nut 3.Adjusting nut 3, in the position of core pipe 2, can determine the degree of the expansion of support 1.
Stainless steel tube becomes the tubular structure of support through laser engraving, after setting treatment is carried out to the expansion shape of support, support 1, nut 2 are all enclosed within core pipe 2, front end 11 and the core pipe 2 of support can be fixed with pin, and the boss of rear end 13 inner chamber of support is snapped in the groove of the front end 31 of nut, can realize can only rotating between support 1 and nut 3 and can not the function of axial relative movement.Turn nut 1 moves and support 3 is stretched as the tubulose before expansion, closely fits together with core pipe 2.
By expansible vertebral plasty support by sending in vertebral body outside cone nut or pedicle of vertebral arch, adjust the angle of expansible vertebral plasty support, after determining the direction of the vertebral body needing to strut, swivel nut 3 releases clamp 1, support 1 can recover the expansion shape of shaping, support bar can bend according to direction during setting, the degrees of expansion of support 1 can be determined in the position of adjusting nut 3, the expanding plate 122 of the support 1 after expansion effectively can strut the vertebral body of compression, recover vertebral height, space is formed in vertebral body inside, bone cement or other vertebral body reinforcing material are filled in the inner space of vertebral body, thus the vertebral body of fixing compression fracture.
Claims (7)
1. an expansible vertebral plasty support, comprises support (1), core pipe (2) and nut (3), it is characterized in that: described support (1) is hollow pipe, and it is at least divided into front end (11), main body (12), rear end (13) three part; Described main body (12) comprises support bar (121) and the support chip (122) of upper and lower symmetry; Described core pipe (2) is made up of leading portion (21) and back segment (22), and described back segment (22) has external screw thread; Described nut (3) has leading portion (31) and back segment (32), and the female thread of its inner chamber coordinates with the back segment (22) of core pipe (2), and leading portion (31) is connected with the rear end (13) of support, and back segment (32) is provided with the breach (33) of rotatable nut (3); Be fixedly connected with between the front end (11) of described support (1) and the leading portion (21) of core pipe (2).
2. the expansible vertebral plasty support of one according to claim 1, is characterized in that: described support (1) is formed through laser engraving by niti-shaped memorial alloy pipe, stainless steel tube or macromolecular material.
3. the expansible vertebral plasty support of one according to claim 1, is characterized in that: the connected mode of described support chip (122) and expanding plate (123) is for weld or bonding.
4. the expansible vertebral plasty support of one according to claim 1, is characterized in that: the front end (11) of described support (1) and the mode that is fixedly connected with of the leading portion (21) of core pipe (2) be bonding, to weld or mechanical pins joins.
5. the expansible vertebral plasty support of one according to claim 1, it is characterized in that: the leading portion of described nut (3) is fluted, the boss (131) of groove and back-end support (13) inner chamber is connected, and the front end of nut (31) withstand the inner chamber of back-end support (13).
6. the expansible vertebral plasty support of one according to claim 1, is characterized in that: the material of described core pipe (2) is marmem pipe, stainless steel tube or other material, the number of openings on its tube wall at least one.
7. the expansible vertebral plasty support of one according to claim 1, is characterized in that: the material of described nut (3) is marmem, rustless steel or other material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410517497.4A CN104306054B (en) | 2014-09-30 | 2014-09-30 | A kind of expansible vertebral plasty support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410517497.4A CN104306054B (en) | 2014-09-30 | 2014-09-30 | A kind of expansible vertebral plasty support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104306054A true CN104306054A (en) | 2015-01-28 |
| CN104306054B CN104306054B (en) | 2016-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410517497.4A Active CN104306054B (en) | 2014-09-30 | 2014-09-30 | A kind of expansible vertebral plasty support |
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| CN (1) | CN104306054B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105496535A (en) * | 2016-01-04 | 2016-04-20 | 张兰发 | Medical miniature back shore device |
| CN106137366A (en) * | 2016-07-27 | 2016-11-23 | 刘小勇 | A kind of memory alloy pipes making Expansible centrum support frame |
| CN106344136A (en) * | 2016-11-24 | 2017-01-25 | 河南理工大学 | Bone marrow supporting device |
| CN108498133A (en) * | 2018-06-22 | 2018-09-07 | 王志荣 | A kind of multi-functional terminal plate of vertebral body processor |
| CN108670329A (en) * | 2018-06-22 | 2018-10-19 | 王志荣 | A kind of terminal plate of vertebral body processing unit |
| CN108670394A (en) * | 2018-06-14 | 2018-10-19 | 东莞市创迈电子科技有限公司 | A kind of bone expansion structure |
| CN112515825A (en) * | 2020-12-16 | 2021-03-19 | 中南大学湘雅二医院 | Hepatobiliary pancreas surgery is with 3D printing exempts from to sew up compatible support of courage intestines |
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| US20040102774A1 (en) * | 2002-11-21 | 2004-05-27 | Trieu Hai H. | Systems and techniques for intravertebral spinal stabilization with expandable devices |
| WO2005048856A1 (en) * | 2003-11-10 | 2005-06-02 | Umc Utrecht Holding B.V. | Expandable implant for treating fractured and/or collapsed bone |
| CN101163456A (en) * | 2005-02-25 | 2008-04-16 | 新特斯有限责任公司 | Implant insertion apparatus and method of use |
| CN102427769A (en) * | 2009-03-12 | 2012-04-25 | 维克辛姆公司 | Apparatus for bone restoration of the spine and methods of use |
| CN204147102U (en) * | 2014-09-30 | 2015-02-11 | 上海君联医疗设备有限公司 | A kind of expansible vertebral plasty support |
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2014
- 2014-09-30 CN CN201410517497.4A patent/CN104306054B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040102774A1 (en) * | 2002-11-21 | 2004-05-27 | Trieu Hai H. | Systems and techniques for intravertebral spinal stabilization with expandable devices |
| WO2005048856A1 (en) * | 2003-11-10 | 2005-06-02 | Umc Utrecht Holding B.V. | Expandable implant for treating fractured and/or collapsed bone |
| CN101163456A (en) * | 2005-02-25 | 2008-04-16 | 新特斯有限责任公司 | Implant insertion apparatus and method of use |
| CN102427769A (en) * | 2009-03-12 | 2012-04-25 | 维克辛姆公司 | Apparatus for bone restoration of the spine and methods of use |
| CN204147102U (en) * | 2014-09-30 | 2015-02-11 | 上海君联医疗设备有限公司 | A kind of expansible vertebral plasty support |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105496535A (en) * | 2016-01-04 | 2016-04-20 | 张兰发 | Medical miniature back shore device |
| CN106137366A (en) * | 2016-07-27 | 2016-11-23 | 刘小勇 | A kind of memory alloy pipes making Expansible centrum support frame |
| CN106344136A (en) * | 2016-11-24 | 2017-01-25 | 河南理工大学 | Bone marrow supporting device |
| CN106344136B (en) * | 2016-11-24 | 2019-02-19 | 河南理工大学 | A kind of marrow support device |
| CN108670394A (en) * | 2018-06-14 | 2018-10-19 | 东莞市创迈电子科技有限公司 | A kind of bone expansion structure |
| CN108670394B (en) * | 2018-06-14 | 2024-04-19 | 谢少鹏 | Bone expansion structure |
| CN108498133A (en) * | 2018-06-22 | 2018-09-07 | 王志荣 | A kind of multi-functional terminal plate of vertebral body processor |
| CN108670329A (en) * | 2018-06-22 | 2018-10-19 | 王志荣 | A kind of terminal plate of vertebral body processing unit |
| CN108670329B (en) * | 2018-06-22 | 2024-01-05 | 王志荣 | Vertebral endplate treatment device |
| CN108498133B (en) * | 2018-06-22 | 2024-01-05 | 王志荣 | Multifunctional vertebral endplate processor |
| CN112515825A (en) * | 2020-12-16 | 2021-03-19 | 中南大学湘雅二医院 | Hepatobiliary pancreas surgery is with 3D printing exempts from to sew up compatible support of courage intestines |
Also Published As
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|---|---|
| CN104306054B (en) | 2016-09-14 |
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