CN107157530A - Vertebra vertebra section dilator - Google Patents
Vertebra vertebra section dilator Download PDFInfo
- Publication number
- CN107157530A CN107157530A CN201710296739.5A CN201710296739A CN107157530A CN 107157530 A CN107157530 A CN 107157530A CN 201710296739 A CN201710296739 A CN 201710296739A CN 107157530 A CN107157530 A CN 107157530A
- Authority
- CN
- China
- Prior art keywords
- bar
- vertebra
- nail
- support bar
- afterbody
- 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.)
- Granted
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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 invention provides a kind of vertebra vertebra section dilator, followed closely and positioner comprising strutting；The positioner includes multiple support bars；The distance between described support bar can be adjusted；Multiple nails that strut are corresponded with multiple support bars；The nail that struts can be with the support bar nested encryptions.The vertebra vertebra section dilator that the present invention is provided use screw afterbody perforate, the structure that matched support bar is inserted, it is to avoid in surgical procedure screw in place after, the larger support bar in cross section is damaged again insertable into human body to peripheral nerve tissue.
Description
Technical field
The present invention relates to a kind of surgical operation medical equipment, in particular it relates to vertebra vertebra section dilator.
Background technology
People is when completing various work, it is necessary to position constantly be changed to alleviate waist stress, but as social work is lived
The change of custom, race of office is chronically at that a certain position is constant, and local accumulation can be caused to damage, be particularly chronically at
Faulty posture is easier to trigger the diseases such as disc herniation.The expectant treatment of non-damaging is selected when the state of an illness is lighter or has damage
Minimally Interventional Therapy etc., when such treatment is invalid, then must carry out operative treatment.Lumbar spinal fusion and artificial disc replacement
As relatively common two methods, require that support is fixed in the dilator of high intensity in surgical procedure.
In the prior art, it is separately fixed at by two screws on two pieces of vertebras, then adjust dilator two strut
The position of bar, makes two provided with perforate to strut rod set on screw, then adjusts and fix two and strut the distance between bar, reaches
To the effect of fixed support.But what the technology was provided struts bar section more than screw section, during being inserted in, strutting bar may
Nerve fiber to peripheral part of performing the operation is damaged, and slidably can influence fixed effect along screw axial direction
Really.Operation is needed to back-out screw again after taking out dilator after terminating, and perienchyma may be damaged again.
The content of the invention
For defect of the prior art, it is an object of the invention to provide a kind of vertebra vertebra section dilator.
The vertebra vertebra section dilator provided according to the present invention, is followed closely and positioner comprising strutting；
The positioner includes multiple support bars；
The distance between described support bar can be adjusted；
Multiple nails that strut are corresponded with multiple support bars；
The nail that struts can be with the support bar nested encryptions.
Preferably, the positioner also includes distance rod and distance adjustor；
The support bar includes fixed support bar and movable support rod；
The fixed support bar is fixed on one end of the distance rod；
The movable support rod is connected with the distance adjustor；
Distance adjustor can adjust position of the movable support rod on distance rod axial direction.
Preferably, the nail that struts includes nail head, nail rod portion and nail afterbody；
The nail head, nail rod portion and nail afterbody are sequentially connected；
Afterbody is axially disposed perforate for nail；
The distal end of the support bar can be nested in the perforate.
Preferably, the bar that struts in axial direction is provided with through hole；
Strut bar and include elastic component and clamping block；
The elastic component is located in the through hole；
Elastic component is fixedly connected with hole wall；
Clamping block is fixedly connected with elastic component；
Clamping block can switch between harvesting state and thorn do well both states；
Under the harvesting state, clamping block is located in through hole, and elastic component is in reducing condition；
The thorn does well down, and clamping block extends across along through hole radial direction and struts bar outer wall.
Preferably, multiple annular grooves are in axial direction uniformly arranged in the nail afterbody perforate；
The clamping block is extend into the annular groove in the case where the thorn does well.
Preferably, the elastic component is flexure strip；
There are multiple flexure strips；Multiple flexure strips can form appearance bar space；
The geometric center for holding bar space is located on the axis of through hole.
Preferably, also comprising stubborn bar；
The stubborn bar includes club head, bar transition part, rod body, bar afterbody；
The club head, bar transition part, rod body, bar afterbody are sequentially connected；
The stubborn bar is inserted into the through hole for strutting bar；
Stubborn bar can twist bar and pass through exclusion elasticity through the change held bar space and cause appearance bar spatial geometric shape
Part driving clamping block is moved to thorn by harvesting state and done well.
Preferably, it is characterised in that the bottom surface for strutting nail perforate is provided with and club head shape matching groove；
The club head is inserted into groove, and is limited stubborn bar and strutted the circumferentially opposed motion between nail；
The bar afterbody is provided with and screws structure.
Preferably, the club head cross sectional shape is square, and the rod body cross sectional shape is circle；
In axial direction project, rod body section is more than and comprising club head section.
Preferably, the nail head is provided with screw thread.
Preferably, the distal outer surface of nail the afterbody perforate inwall and the support bar is seamlessly transitted；
Follow closely afterbody perforate inwall outer end and include fin in one or more；
The interior fin extends along perforate inwall circumferential direction；Extension angle is less than 360 degree；
Support bar near-end includes outer fin；
The outer fin is corresponded with the interior fin.
Compared with prior art, the present invention has following beneficial effect：
1st, using screw afterbody perforate, the structure that matched support bar is inserted, it is to avoid the spiral shell in surgical procedure
It is pinned to behind position, the larger support bar in cross section is damaged again insertable into human body to peripheral nerve tissue；
2nd, adjusting screw and the relative position between bar can be strutted, again can be by snap fastener limitation between the two
Axial displacement, fixed intensity in enhancing surgical procedure；
3rd, directly screw can be taken out from operative site in the case where not taking out and strutting bar, reduces the operation traditional Chinese medical science
Treat the probability that equipment uses or takes out and damaged to perienchyma.
Brief description of the drawings
By reading the detailed description made with reference to the following drawings to non-limiting example, further feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is positioner front view；
Fig. 2 is positioner left view；
Fig. 3 is fundamental diagram of the present invention；
Fig. 4 is Fig. 3 fragmentary detail view A；
Fig. 5 is Fig. 3 section B-B figure when twisting inside bar insertion support bar；
Fig. 6 is Fig. 3 section B-B figure when twisting bar to be not inserted into inside support bar；
Fig. 7 is to strut pin structure figure；
Fig. 8 is to twist pin structure figure；
Fig. 9 is fundamental diagram of the invention in change case；
Figure 10 is the fundamental diagram that change case is further change in the rear present invention.
Shown in figure：
The nail head 21 of positioner 1
The nail rod portion 22 of clamping block 101
Flexure strip 102 follows closely afterbody 23
Support bar 11 twists bar 3
The fixed club head 31 of support bar 111
The bar transition part 32 of movable support rod 112
The rod body 33 of distance rod 12
The bar afterbody 34 of distance adjustor 13
Strut fin 50 in nail 2
The outer fin 60 of annular groove 201
Bottom groove 202
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that to the ordinary skill of this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
In embodiment, the vertebra vertebra section dilator provided according to the present invention comprising positioner 1, struts nail 2, stubborn bar 3,
As shown in Figure 1.Positioner 1 includes support bar 11, distance rod 12 and distance adjustor 13, and support bar 11 is again comprising fixed support
Bar 111 and movable support rod 112.Fixed support bar 111 is arranged on one end of distance rod 12, and movable support rod 112 is enclosed on spacing
On bar 12, movable support rod 112, distance rod 12 can produce axially opposing slip between the two.Movable support rod 112 also with tune
Spacing mechanism 13 is fixedly connected, and can be slided simultaneously on distance rod 12.The upper surface of distance rod 12 has been evenly arranged tooth form vertically
Striped, distance adjustor 13 under the state of not stressing, by elastic component make its banking stop one end insert tooth form striped groove, limitation with
Displacement between distance rod 12.Distance adjustor 12 also includes the roller being meshed with tooth form striped, passes through the drive of roller, spacing
Mechanism 12 is moved with movable support rod 112 towards the direction away from fixed support bar 11；Compression elastic piece, make banking stop lift and from
Tooth punching shape striped groove, the just position of freely adjustable movable support rod 112.
The tendency of support bar 11 along its length is consistent, and centre exist bending by support bar 11 be divided into epimere with
Hypomere：Epimere connects distance rod 12；Hypomere is cylinder, and there is through hole in the axial direction.As described in Figure 6, set in through hole
Flexible 102,4 pieces of flexure strips 102 surround a polygon diametrically closed, and the polygonal internal of closing is hollow
Constitute and hold under bar space, reducing condition, flexure strip 102 is shaped as arcuation, can similar dorsad through hole axis parabola, hold bar
The geometric center in space is located on through hole axis.The two ends of flexure strip 102 be fixed on the inwall of the through hole of support bar 11 or with
Other flexure strips are fixedly connected.Clamping block 101 is fixed with symmetrical two pieces of flexure strips 102, flexure strip 102 is in reducing condition
When, clamping block 101 is in harvesting state, that is, is integrally located inside support bar 11.As shown in figure 5, inserting support bar 11 when twisting bar 3
Through hole in, and through behind the appearance bar space, hold bar spatial area and become big, crimp, flexure strip occur for flexure strip 102
The summit of 102 parabolic shape is attached to the clamping block 101 on flexure strip 102 towards away from the motion of through hole axis direction
Move radially outwards, correspondence position sets perforate on support bar 11, clamping block 101 can be extruded support bar along perforate
11, i.e. thorn do well.
In preference, described flexure strip 102 can also be other kinds of elastic component, such as spring or elastic rod,
And material can also be the nonmetallic materials of such as class of rubber one, but in view of twisting when bar 3 is inserted, it is necessary to which elastic component can be held
By the moment of flexure of certain axial direction, selection metallic elastic piece is preferably.In addition, described appearance bar space boundary also may be used
To be discontinuous, such as, the two ends of 4 flexure strips 102 are both connected on the inwall of the through hole of support bar 11, circumferentially uniform point
Cloth, and do not contact each other, clamping block 101 is consistent with the setting form in embodiment, can also complete harvesting state and pierce out shape
Switching between both states of state, the program enables stubborn bar 3 to be more easily inserted and removed from, and shortcoming, which is to process, relatively to be implemented
Example is complicated.For convenience of the installation of clamping block 101 and flexure strip 102, it is preferable that both can be arranged on to the distal end of support bar 11
Position, also by 11 points of support bar can be to be connected by modes such as screw threads between two sections, two sections by the vicinity of its position.It is preferred that
Ground, the quantity of flexure strip can be one or more, but quantity crosses multipotency causes processing difficulties, and quantity can then cause to be oriented to very little
Function is deteriorated.
As shown in figure 8, in embodiment, twist bar 3 it is main by club head 31, bar transition part 32, rod body 33, bar afterbody 34 according to
It is secondary to connect and compose.Bar 3 is twisted to be inserted into the through hole of support bar 11.The section of rod body 33 is circle, and can be changed by bullet
Property piece 102 formation appearance bar space；The section of club head 31 is square, is free to pass through without causing in calm bar space
Flexure strip 102 is deformed；Bar transition part 32 completes the rounding off of two sections shape；The section of bar afterbody 34 is hexagon, is conveniently made
Stubborn bar 3 is circumferentially turned with instrument.Preferably, the section of club head 31 can also be non-circular other shapes, such as triangle,
It is quincunx or oval etc.；Bar afterbody 34 can also be in proximal end face there is provided a narrow groove or other shapes, are only needed
Convenient use instrument carries out torquing operations to it.
As shown in fig. 7, in embodiment, strutting nail 2 and being mainly sequentially connected by nail head 21, nail rod portion 22 and nail afterbody 23
Constitute.Afterbody 23 is axially disposed blind hole for nail, and support bar 11 is inserted among the blind hole, equal along axis on blind pore wall
It is even to be provided with annular groove 201, when clamping block 101 does well in thorn, just it is inserted into described annular groove 201,
Complete to the relative axial restraint for strutting nail 2 of support bar 11.In the bottom of the blind hole, provided with bottom groove 202, its shape with
The shape for twisting the club head 31 of bar 3 is consistent and can not produce relative circumferential movement between the two, it is ensured that when rotating stubborn bar 3,
Strutting nail 2 also can synchronous axial system.Nail head 21 and nail rod portion 22 are provided with screw thread, conveniently strut being screwed into and back-outing for nail 2.
As shown in figure 9, in change case, strutting the distal outer surface of the nail afterbody perforate inwall and the support bar 11 of nail 2
Seamlessly transit, during use, support bar 11, which is inserted directly into, to be strutted in 2 afterbody perforates of nail, and abandons stubborn bar structure.The knot
Structure greatly reduces the difficulty of processing for the vertebra cone section dilator that the present invention is provided, and can meet the fixed demand of operation, keeps away
Exempt from using being damaged again to vertebra perienchyma during support bar 11.As shown in Figure 10, further, change case support
Open the nail afterbody perforate inwall of nail 2 outer end and be additionally provided with three interior fins 50；The interior fin 50 prolongs along perforate inwall circumferential direction
Stretch, extension angle is 180 degree；Support bar near-end includes outer fin 60；The outer fin 60 is corresponded with the interior fin 50.
The setting of fin so that support bar 11, which is adequately inserted, to be strutted after 2 afterbody perforates of nail, can be intermeshed between fin, so as to rise
To the effect of axial restraint.Preferably, the quantity of interior fin 50 can also be one or more of, and extension angle can also be small
In 360 degree of other values, such as 90 degree or 270 degree, in addition, the quantity of outer fin 60 and interior fin 50, extension angle page can be with
It is inconsistent, it only need to ensure that both can be engaged, reach the purpose of axial restraint.Especially, outer fin 60 and interior fin 50
Between, strut nail 2 it is non-coaxial with support bar 11 when or only strut follow closely 2 it is non-coaxial with support bar 11 when can be nibbled
Close, strut nail 2 it is coaxial with support bar 11 when can be mutually disengaged.
Operation principle：
In the present embodiment, the vertebra cone section dilator that invention is provided includes positioner 1, struts nail 2, twists bar 3, positioning dress
Put 1 and include support bar 11, distance rod 12 and distance adjustor 13, support bar 11 is again comprising fixed support bar 111 and movable supporting
Bar 112.Fixed support bar 111 is fixed on one end of distance rod 12, and distance adjustor 13 can control movable support rod 112 along spacing
Bar 12 is axially moved, the distance between two support bars 11 of regulation.
Two strut nail 2 and match with two support bars 11, and screw thread is provided with the nail head 21 for strutting nail 2, during operation,
Nail will first be strutted 2 to be fixed in the vertebra on pathological interspinal disk both sides, then support bar 11 is inserted into to strut nail 2 aft mounted blind
Kong Zhong, adjusts and fixes the distance between two support bars 11.Annular groove is uniformly provided with vertically on the hole wall of the blind hole
201, the hypomere of support bar 11 is provided with through hole vertically, and through hole is internally provided with clamping block 101 and flexure strip 102, flexure strip 102
Under reducing condition, clamping block 101 is located at the inside of support bar 11.When the rod body 33 for twisting bar 3 passes through the appearance of the formation of flexure strip 102
Behind bar space, flexure strip 102 deforms, and will be connected to clamping block 101 on flexure strip 102 and extrude support bar 11, clamping block
101 match with annular groove 201, complete to the relative axial restraint for strutting nail 2 of support bar 11.And bar 3 is twisted in flexure strip 102
Clamping under, the axial restraint of relative support bar 11 can be also kept in surgical procedure.
After operation terminates, stubborn bar 3 can be extend into the bottom for strutting 2 blind holes of nail, the bottom of the blind hole is provided with and bar
The bottom groove 202 of the form fit of head 31, rotates stubborn bar 3 and inserts it into bottom groove 202, no longer produce between the two
Relative circumferential movement.The bar afterbody 34 for twisting bar 3 is provided with the structure conveniently screwed, instrument can be used to turn it, now struts
Nail 2 also can synchronous axial system so that will strut nail 2 from vertebra take out.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.
Claims (10)
1. a kind of vertebra vertebra section dilator, it is characterised in that followed closely and positioner comprising strutting；
The positioner includes multiple support bars；
The distance between described support bar can be adjusted；
Multiple nails that strut are corresponded with multiple support bars；
The nail that struts can be with the support bar nested encryptions.
2. vertebra vertebra section dilator according to claim 1, it is characterised in that the nail that struts includes nail head, nail rod
Portion and nail afterbody；
The nail head, nail rod portion and nail afterbody are sequentially connected；
Afterbody is axially disposed perforate for nail；
The distal end of the support bar can be nested in the perforate.
3. vertebra vertebra section dilator according to claim 1, it is characterised in that the positioner also comprising distance rod with
Distance adjustor；
The support bar includes fixed support bar and movable support rod；
The fixed support bar is fixed on one end of the distance rod；
The movable support rod is connected with the distance adjustor；
Distance adjustor can adjust position of the movable support rod on distance rod axial direction.
4. vertebra vertebra section dilator according to claim 2, it is characterised in that the bar that struts in axial direction is provided with
Through hole；
Strut bar and include elastic component and clamping block；
The elastic component is located in the through hole；
Elastic component is fixedly connected with hole wall；
Clamping block is fixedly connected with elastic component；
Clamping block can switch between harvesting state and thorn do well both states；
Under the harvesting state, clamping block is located in through hole, and elastic component is in reducing condition；
The thorn does well down, and clamping block extends across along through hole radial direction and struts bar outer wall.
5. vertebra vertebra section dilator according to claim 4, it is characterised in that in the nail afterbody perforate in axial direction
It is uniformly arranged multiple annular grooves；
The clamping block is extend into the annular groove in the case where the thorn does well.
6. vertebra vertebra section dilator according to claim 4, it is characterised in that the elastic component is flexure strip；
There are multiple flexure strips；Multiple flexure strips can form appearance bar space；
The geometric center for holding bar space is located on the axis of through hole.
7. vertebra vertebra section dilator according to claim 6, it is characterised in that also comprising stubborn bar；
The stubborn bar includes club head, bar transition part, rod body, bar afterbody；
The club head, bar transition part, rod body, bar afterbody are sequentially connected；
The stubborn bar is inserted into the through hole for strutting bar；
Stubborn bar can twist bar and driven by squeezing elastic component through the change held bar space and cause appearance bar spatial geometric shape
Dynamic clamping block is moved to thorn by harvesting state and done well.
8. vertebra vertebra section dilator according to claim 7, it is characterised in that the bottom surface for strutting nail perforate is provided with
With club head shape matching groove；
The club head is inserted into groove, and is limited stubborn bar and strutted the circumferentially opposed motion between nail；
The bar afterbody is provided with and screws structure.
9. vertebra vertebra section dilator according to claim 6, it is characterised in that the club head cross sectional shape be it is square,
The rod body cross sectional shape is circle；
In axial direction project, rod body section is more than and comprising club head section.
10. vertebra vertebra section dilator according to claim 2, it is characterised in that the nail afterbody perforate inwall with it is described
The distal outer surface of support bar is seamlessly transitted；
Follow closely afterbody perforate inwall outer end and include fin in one or more；
The interior fin extends along perforate inwall circumferential direction；Extension angle is less than 360 degree；
Support bar near-end includes outer fin；
The outer fin is corresponded with the interior fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710296739.5A CN107157530B (en) | 2017-04-28 | 2017-04-28 | Vertebra vertebra section dilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710296739.5A CN107157530B (en) | 2017-04-28 | 2017-04-28 | Vertebra vertebra section dilator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107157530A true CN107157530A (en) | 2017-09-15 |
| CN107157530B CN107157530B (en) | 2019-09-20 |
Family
ID=59813946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710296739.5A Expired - Fee Related CN107157530B (en) | 2017-04-28 | 2017-04-28 | Vertebra vertebra section dilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107157530B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111407527A (en) * | 2020-03-25 | 2020-07-14 | 新泰市中医医院 | Operation transfer trolley for transporting infectious disease patients and use method thereof |
| CN112932568A (en) * | 2020-12-25 | 2021-06-11 | 刘铁龙 | Cervical anterior vertebral body spreader |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070299444A1 (en) * | 2004-08-26 | 2007-12-27 | Endius, Inc. | Methods and apparatus for access to and/or treatment of the spine |
| US20080140122A1 (en) * | 2006-12-08 | 2008-06-12 | Michael Clay Bethell | Tethers with Strength Limits for Treating Vertebral Members |
| CN201147359Y (en) * | 2008-02-01 | 2008-11-12 | 刘兰泽 | Anterior cervical positor |
| CN101708128A (en) * | 2009-12-11 | 2010-05-19 | 上海凯利泰医疗科技有限公司 | Device for spreading spinous process |
| CN102149344A (en) * | 2008-09-12 | 2011-08-10 | 斯恩蒂斯有限公司 | Reduction tool for spinal rod |
-
2017
- 2017-04-28 CN CN201710296739.5A patent/CN107157530B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070299444A1 (en) * | 2004-08-26 | 2007-12-27 | Endius, Inc. | Methods and apparatus for access to and/or treatment of the spine |
| US20080140122A1 (en) * | 2006-12-08 | 2008-06-12 | Michael Clay Bethell | Tethers with Strength Limits for Treating Vertebral Members |
| CN201147359Y (en) * | 2008-02-01 | 2008-11-12 | 刘兰泽 | Anterior cervical positor |
| CN102149344A (en) * | 2008-09-12 | 2011-08-10 | 斯恩蒂斯有限公司 | Reduction tool for spinal rod |
| CN101708128A (en) * | 2009-12-11 | 2010-05-19 | 上海凯利泰医疗科技有限公司 | Device for spreading spinous process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111407527A (en) * | 2020-03-25 | 2020-07-14 | 新泰市中医医院 | Operation transfer trolley for transporting infectious disease patients and use method thereof |
| CN112932568A (en) * | 2020-12-25 | 2021-06-11 | 刘铁龙 | Cervical anterior vertebral body spreader |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107157530B (en) | 2019-09-20 |
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Granted publication date: 20190920 Termination date: 20200428 |