CN104248465B - Compression fracture of vertabral body struts bone grafting device - Google Patents
Compression fracture of vertabral body struts bone grafting device Download PDFInfo
- Publication number
- CN104248465B CN104248465B CN201410513728.4A CN201410513728A CN104248465B CN 104248465 B CN104248465 B CN 104248465B CN 201410513728 A CN201410513728 A CN 201410513728A CN 104248465 B CN104248465 B CN 104248465B
- Authority
- CN
- China
- Prior art keywords
- cylinder
- arm
- plunger
- strut
- block
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
- A61B2017/0256—Joint distractors for the spine
-
- 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
- A61B2017/564—Methods for bone or joint treatment
Abstract
The present invention relates to compression fracture of vertabral body and strut bone grafting device, it sleeve including arranging inner core, a cylinder it is movably set with in described sleeve, inner chamber in cylinder one end is provided with the plunger that can move axially along this cylinder, this plunger promotes be arranged in cylinder two to strut arm and stretch out this cylinder other end, each external part strutting arm constrains in the inwall of the other end described in cylinder, and described external part end face is fixed with and struts block.The present invention uses cylinder, plunger and struts arm and coordinate, and when plunger moves along cylinder, struts arm by strutting block by pyramidal support, so that anterior longitudinal ligament, posterior longitudinal ligament and fibrous ring are not stretched, it is to avoid injured nerve.
Description
Technical field
The present invention relates to the prosthetic device of compression fracture of vertabral body, specifically compression fracture of vertabral body struts bone grafting device.
Background technology
Transportation at present and construction business develop rapidly, and while bringing economic development, result also in the increase of wounded patient.In wounded patient, the sickness rate of spinal fracture increases year by year, and society and individual are caused the biggest burden.Spinal fracture mostly is vertebral compression or bursting fracture, and fracture postcentrum height is lost, spinal anterior approach, severe patient often concurrent spinal cord injury.
The at present process to vertebral fracture has a various ways: 1, expectant treatment, to the Vertebral Compression patient less than 1/3, absolute bed rest 1.5 months, out-of-bed activity after union of fracture；2, Percutaneous kyplasty, is mainly used in vertebral body trailing edge crack-free, the patient at advanced age；3, open reduction internal fixation by nail-stick system art, this modus operandi is most commonly seen mode, because spinal injury patient is predominantly person between twenty and fifty, and mostly is high-energy damage, and vertebral height is lost more；Operation process is: the tail end at sick vertebra is respectively implanted pedicle screw, then utilizes vertical connecting rod to be connected by the screw of both sides respectively, utilizes dilator slightly to be strutted by the screw cephalocanudad of sick vertebra both sides end to end, to recover the height of vertebral body, corrects kyphosis deformity.Under normal circumstances, vertebral body front and back have anterior longitudinal ligament and posterior longitudinal ligament attachment respectively, and two ligaments are continuous print ligament from head end to tail end and are attached to all vertebral body front and rear edges.And having fibrous ring and disc tissue between two adjacent vertebral bodys, fibrous ring is attached to the upper lower edge of vertebral body periphery.Strut the mechanism allowing vertebral height recover mainly: by when side screw struts to two ends end to end, anterior longitudinal ligament, posterior longitudinal ligament and fibrous ring are also stretched, utilize the strength vertebral bone block reset by compression of extruding and traction.
But the most satisfied in the case of a lot of in clinical position, after pyramidal support, vertebral height recovers the best, but vertebral body trailing edge can be caused excessively to strut when strengthening the dynamics strutted, and causes neutral stretch, even causes paralysis.So clinicist often faces selection, the risk risking nerve injury struts vertebral body as far as possible or accepts the fact that vertebral height recovers the best？
It addition, be mainly spongy bone in vertebral body, after vertebral compression fracture, spongy bone is also extruded, so after strutting vertebral body recovery vertebral height, being often hollow state, along with the progress of the state of an illness, being filled by scar tissue, have impact on the intensity of vertebral body inside vertebral body.After 1 year after patient takes out nail-stick system, due to intensity have not again occur fracture risk.
Summary of the invention
For above-mentioned technical problem, the present invention provides a kind of safe and practical compression fracture of vertabral body to strut bone grafting device.
The present invention solves the technical scheme that above-mentioned technical problem used: compression fracture of vertabral body struts bone grafting device, including the sleeve that can arrange inner core, a cylinder it is movably set with in described sleeve, inner chamber in cylinder one end is provided with the plunger that can move axially along this cylinder, this plunger promotes be arranged in cylinder two to strut arm and stretch out this cylinder other end, each external part strutting arm constrains in the inwall of the other end described in cylinder, and described external part end face is fixed with and struts block.
As preferably, a connecting rod one end is connected with described plunger inner ends thereof, and the fixing end that this connecting rod other end struts arm respectively with described two is hinged.
As preferably, described in strut the arc that block is indent, strut block vertically described in strut arm.
As preferably, described in strut block and the angle strutting arm is more than 90 °.
As preferably, described in strut block be cylindric.
As preferably, the inwall of the other end described in cylinder is extended with two constraint blocks being oppositely arranged to inner side, and each constraint block has been opened strip through-hole, and each described external part of arm that struts is through corresponding strip through-hole.
As preferably, described plunger periphery wall is provided with external screw thread, and described in cylinder, one end inwall is correspondingly provided with the female thread coordinated with this external screw thread.
As preferably, described plunger inner face is opened porose, and one end described in connecting rod is stretched in this hole, and a bearing pin is fixed on the hole wall in this hole through one end described in connecting rod.
As preferably, described plunger outer end is provided with rotary handle.
As preferably, described sleeve inner end is extended with flange to inner side.
As can be known from the above technical solutions, the present invention uses cylinder, plunger and struts arm and coordinate, and when plunger moves along cylinder, struts arm by strutting block by pyramidal support, so that anterior longitudinal ligament, posterior longitudinal ligament and fibrous ring are not stretched, it is to avoid injured nerve.
Accompanying drawing explanation
Fig. 1 is a kind of optimal way structural representation of the present invention；
Fig. 2 is Fig. 1 schematic top plan view；
Fig. 3 is that the present invention uses another kind to strut the structural representation of block；
Fig. 4 is the side schematic view strutting block in Fig. 3.
Detailed description of the invention
The compression fracture of vertabral body that the present invention is discussed in detail below in conjunction with Fig. 1, Fig. 2 struts bone grafting device, it includes sleeve 1, inner core (not shown) can be set in sleeve, inner core can be extracted in sleeve, is movably set with a cylinder 2 in described sleeve, and cylinder can be extracted in sleeve, the connected mode of sleeve and cylinder can use the existing mode of sleeve and inner core, simultaneously in order to ensure that cylinder does not stretch out the inner of sleeve, at sleeve inner end to inner side stretch flange formability 11, thus cylinder is blocked in sleeve；Inner chamber in cylinder one end is provided with the plunger 3 that can move axially along this cylinder, this plunger promotes be arranged in cylinder two to strut arm 4 and stretch out this cylinder other end, each external part strutting arm constrains in the inwall of the other end described in cylinder, and described external part end face is fixed with and struts block 5.The present invention drives two to strut arm by mobile plunger and moves, and simultaneously by constraint external part so that two strut arm opens laterally, and then drive struts block and struts vertebral body.
In the present invention, connecting rod 6 one end is connected with described plunger inner ends thereof, and the fixing end that this connecting rod other end struts arm respectively with described two is hinged, so can make two strut arm to open distance bigger, reach preferably to strut effect；Described strutting the arc that block is indent, when strutting arm and drawing in, strut block and can be fitted in the periphery of cylinder, the space taken is less；Meanwhile, strut block vertically described in strut arm so that strut scope bigger.
As another aspect preferred version, such as Fig. 3, Fig. 4, the described angle strutting block and strut arm is more than 90 °, that is, in operation process, strut the most lateral rear side of arm and tilt, strut on front side of block and strut the angle of arm more than 90 °, the scope that struts so making front side is bigger, more has and utilizes being smoothed out of operation；Meanwhile, strut block and may be designed as arc.No matter strutting block uses which kind of mode above-mentioned, it may be designed to cylindric, reduces the damage of operation process.
In implementation process, the inwall of the other end described in cylinder 2 is extended with two constraint blocks 21 being oppositely arranged to inner side, and each constraint block has been opened strip through-hole 22, and each described external part of arm that struts is through corresponding strip through-hole.When strutting arm and opening or draw in, it can move in strip through-hole.
Described plunger periphery wall is provided with external screw thread, and described in cylinder, one end inwall is correspondingly provided with the female thread coordinated with this external screw thread；Described plunger 3 inner face opens porose 31, and one end described in connecting rod is stretched in this hole, and a bearing pin 32 is fixed on the hole wall in this hole through one end described in connecting rod.When rotary plunger, plunger and cylinder are threaded connection realization and move axially, the bearing pin drivening rod that moves axially through of plunger moves axially, so that the fixing end strutting arm moves axially, retrained by bar hole owing to strutting the external part of arm so that it opens during moving axially simultaneously or draws in.Rotary plunger for convenience, is provided with rotary handle in plunger outer end.
In implementation process, the approach of apparatus uses classical pedicle of vertebral arch approach enter vertebral body or directly enter vertebral body from vertebral body trailing edge.First position at Pedicle entrance or vertebral body trailing edge with pointed cone, then open circuit apparatus with a scale tapping bone passage in pedicle of vertebral arch and vertebral body is utilized, the apparatus of recycling band tapping sleeve and inner core enters in vertebral body, the degree of depth of sleeve is just to enter in vertebral body as degree, then take out inner core, the cylinder of the present invention, plunger, the bone grafting device that struts that struts the composition such as arm are entered in vertebral body by sleeve, under C arm is had an X-rayed, the upper lower edge of vertebral body is strutted, then take out cylinder, by sleeve, granular spongy bone is inserted in vertebral body, finally take out sleeve.Due to pedicle diameter from thoracic vertebra to lumbar vertebra typically from 4mm to 6.5mm, so the external diameter of sleeve may be designed to 3.5mm to 6.5mm, and every 1mm a kind of model of design, such as tetra-kinds of models of 3.5mm, 4.5mm, 5.5mm, 6.5mm, and the diameter of cylinder or inner core should adapt to sleeve diameter.
Above-mentioned embodiment is used for illustrative purposes only, and it is not limitation of the present invention, those of ordinary skill about technical field, without departing from the spirit and scope of the present invention, all right various changes can be made and modification, and the technical scheme of the most all equivalents also should belong to scope of the invention.
Claims (10)
1. compression fracture of vertabral body struts bone grafting device, including the sleeve that can arrange inner core, it is characterized in that: in described sleeve, be movably set with a cylinder, inner chamber in cylinder one end is provided with the plunger that can move axially along this cylinder, this plunger promotes be arranged in cylinder two to strut arm and stretch out this cylinder other end, each external part strutting arm constrains in the inwall of the other end described in cylinder, and described external part end face is fixed with and struts block.
Device the most according to claim 1, it is characterised in that: a connecting rod one end is connected with described plunger inner ends thereof, and the fixing end that this connecting rod other end struts arm respectively with described two is hinged.
Device the most according to claim 1, it is characterised in that strut the arc that block is indent described in:, strut block vertically described in strut arm.
Device the most according to claim 1, it is characterised in that strut block described in: with the angle strutting arm more than 90 °.
5. according to the device described in claim 3 or 4, it is characterised in that it is cylindric for strutting block described in:.
Device the most as claimed in any of claims 1 to 4, it is characterized in that: the inwall of the other end described in cylinder is extended with two constraint blocks being oppositely arranged to inner side, having opened strip through-hole on each constraint block, each described external part of arm that struts is through corresponding strip through-hole.
Device the most according to claim 6, it is characterised in that: described plunger periphery wall is provided with external screw thread, and described in cylinder, one end inwall is correspondingly provided with the female thread coordinated with this external screw thread.
Device the most according to claim 2, it is characterised in that: described plunger inner face is opened porose, and one end described in connecting rod is stretched in this hole, and a bearing pin is fixed on the hole wall in this hole through one end described in connecting rod.
Device the most according to claim 6, it is characterised in that: described plunger outer end is provided with rotary handle.
Device the most according to claim 1, it is characterised in that: described sleeve inner end is extended with flange to inner side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410513728.4A CN104248465B (en) | 2014-09-29 | 2014-09-29 | Compression fracture of vertabral body struts bone grafting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410513728.4A CN104248465B (en) | 2014-09-29 | 2014-09-29 | Compression fracture of vertabral body struts bone grafting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104248465A CN104248465A (en) | 2014-12-31 |
| CN104248465B true CN104248465B (en) | 2016-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410513728.4A Expired - Fee Related CN104248465B (en) | 2014-09-29 | 2014-09-29 | Compression fracture of vertabral body struts bone grafting device |
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| Country | Link |
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| CN (1) | CN104248465B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9788971B1 (en) | 2013-05-22 | 2017-10-17 | Nuvasive, Inc. | Expandable fusion implant and related methods |
| AU2016260301B2 (en) | 2015-05-12 | 2020-06-25 | Nuvasive, Inc. | Expandable lordosis intervertebral implants |
| CN105232138A (en) * | 2015-10-19 | 2016-01-13 | 南宁市中医医院 | Novel adjustable bone grafting stopper and using method thereof |
| AU2016381191B2 (en) | 2015-12-30 | 2021-05-20 | Nuvasive, Inc. | Lordotic expandable fusion implant |
| WO2019126213A1 (en) | 2017-12-18 | 2019-06-27 | Nuvasive, Inc. | Expandable implant device |
| CN109602466B (en) * | 2018-12-17 | 2024-02-06 | 南昌市第一医院 | Cervical vertebra facet joint fusion device |
| US11185319B2 (en) * | 2019-02-11 | 2021-11-30 | Warsaw Orthopedic, Inc. | Surgical distractor and method |
| CN111671557B (en) * | 2020-06-30 | 2022-08-12 | 钱富林 | Elastic net-shaped support |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5113846A (en) * | 1990-07-03 | 1992-05-19 | Richard Wolf Gmbh | Organ manipulator |
| CN102599946A (en) * | 2012-04-17 | 2012-07-25 | 上海市奉贤区中心医院 | Behind-path outer-side vertebral body repositor |
| CN103110451A (en) * | 2013-03-21 | 2013-05-22 | 上海朗迈医疗器械科技有限公司 | Inflatable device for treating vertebral compression fracture |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7513900B2 (en) * | 2003-09-29 | 2009-04-07 | Boston Scientific Scimed, Inc. | Apparatus and methods for reducing compression bone fractures using high strength ribbed members |
| WO2009036367A1 (en) * | 2007-09-13 | 2009-03-19 | Transcorp, Inc. | Transcorporeal spinal decompression and repair system and related method |
-
2014
- 2014-09-29 CN CN201410513728.4A patent/CN104248465B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5113846A (en) * | 1990-07-03 | 1992-05-19 | Richard Wolf Gmbh | Organ manipulator |
| CN102599946A (en) * | 2012-04-17 | 2012-07-25 | 上海市奉贤区中心医院 | Behind-path outer-side vertebral body repositor |
| CN103110451A (en) * | 2013-03-21 | 2013-05-22 | 上海朗迈医疗器械科技有限公司 | Inflatable device for treating vertebral compression fracture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104248465A (en) | 2014-12-31 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20161116 Termination date: 20180929 |