CN107157530B - Vertebra vertebra section dilator - Google Patents
Vertebra vertebra section dilator Download PDFInfo
- Publication number
- CN107157530B CN107157530B CN201710296739.5A CN201710296739A CN107157530B CN 107157530 B CN107157530 B CN 107157530B CN 201710296739 A CN201710296739 A CN 201710296739A CN 107157530 B CN107157530 B CN 107157530B
- Authority
- CN
- China
- Prior art keywords
- support rod
- nail
- bar
- vertebra
- rod
- 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
- 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 provides a kind of vertebra vertebra section dilators, comprising strutting nail and positioning device；The positioning device includes multiple support rods；The distance between described support rod can be adjusted；Multiple nails that strut are corresponded with multiple support rods；The nail that struts can be with the support rod nested encryptions.Vertebra vertebra section dilator provided by the invention use the aperture of screw tail portion, the structure that matched support rod is inserted, avoid in the course of surgery screw in place after, the biggish support rod in cross section damages peripheral nerve tissue again insertable into human body.
Description
Technical field
The present invention relates to a kind of surgical operation medical equipments, and in particular, to vertebra vertebra section dilator.
Background technique
People needs to constantly change position when completing various work to alleviate waist stress, but as social work is lived
The variation of habit, race, office are chronically at that a certain position is constant, will lead to local accumulation damage, are especially chronically at
Faulty posture is easier to cause the diseases such as disc herniation.It selects non-damaging conservative therapy 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 high-intensitive dilator that support is fixed in the course of surgery.
In the prior art, it is separately fixed on two pieces of vertebras by two screws, two for then adjusting dilator strut
The position of bar makes two equipped with aperture 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 provided struts bar section greater than screw section, and during being inserted in, strutting bar may
The nerve fiber of operation peripheral part is damaged, and can be free to slide along screw axial direction, influences fixed effect
Fruit.It needs to back-out screw again after taking out dilator after operation, perienchyma may be damaged again.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of vertebra vertebra section dilators.
The vertebra vertebra section dilator provided according to the present invention, comprising strutting nail and positioning device；
The positioning device includes multiple support rods；
The distance between described support rod can be adjusted；
Multiple nails that strut are corresponded with multiple support rods；
The nail that struts can be with the support rod nested encryptions.
Preferably, the positioning device also includes distance rod and distance adjustor；
The support rod includes fixed support rod and movable support rod；
The fixed support rod is fixed on one end of the distance rod；
The movable support rod is connect with the distance adjustor；
Distance adjustor can adjust position of the movable support rod in distance rod axial direction.
Preferably, the nail that struts includes nail head, nail rod portion and nail tail portion；
The nail head, nail rod portion and nail tail portion are sequentially connected；
Tail portion is axially disposed aperture for nail；
The distal end of the support rod can be nested in the aperture.
Preferably, the support rod is in axial direction provided with through-hole；
Support rod includes 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 do well in harvesting state and thorn to be switched between 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 support rod outer wall along through-hole radial direction.
Preferably, multiple annular grooves are in axial direction uniformly arranged in the nail tail portion aperture；
The clamping block is extend into the annular groove in the case where the thorn does well.
Preferably, the elastic component is elastic piece；
There are multiple elastic pieces；Multiple elastic pieces, which are capable of forming, holds bar space；
The geometric center for holding bar space is located on the central axes of through-hole.
Preferably, also comprising twisting bar；
The stubborn bar includes club head, bar transition part, rod body, bar tail portion；
The club head, bar transition part, rod body, bar tail portion are sequentially connected；
The stubborn bar is inserted into the through-hole of the support rod；
Stubborn bar can pass through the appearance bar space and cause the change for holding bar spatial geometric shape, twist bar and pass through exclusion elasticity
Part driving clamping block is moved to thorn by harvesting state and does well.
Preferably, which is characterized in that the bottom surface for strutting nail aperture 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 movement between nail；
The bar tail portion is equipped with and screws structure.
Preferably, the club head cross sectional shape is rectangular, and the rod body cross sectional shape is circle；
It in axial direction projects, rod body section is greater than and includes club head section.
Preferably, the nail head is provided with screw thread.
Preferably, the distal outer surface of the nail tail portion aperture inner wall and the support rod seamlessly transits；
Following closely tail portion aperture inner wall outer end includes fin in one or more；
The interior fin extends along aperture inner wall circumferential direction；Extension angle is less than 360 degree；
Support rod proximal end includes outer fin；
The outer fin and the interior fin correspond.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1, the structure being inserted using the aperture of screw tail portion, matched support rod avoids spiral shell in the course of surgery
After being pinned to position, the biggish support rod in cross section damages peripheral nerve tissue again insertable into human body；
2, the relative position between screw and support rod can be adjusted, and can be limited between the two by clamping mechanism
Axial displacement, enhance intensity fixed in surgical procedure；
3, directly screw can be taken out in the case where not taking out support rod from operative site, reduces operation Chinese medicine
Treat the probability that equipment is used or taken out and damages to perienchyma.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is positioning device front view；
Fig. 2 is positioning device left view；
Fig. 3 is working principle diagram of the present invention；
Fig. 4 is the fragmentary detail view A of Fig. 3；
Fig. 5 is the section B-B figure of Fig. 3 when twisting bar to be inserted into inside support rod；
Fig. 6 is the section B-B figure of Fig. 3 when twisting bar to be not inserted into inside support rod；
Fig. 7 is to strut pin structure figure；
Fig. 8 is to twist pin structure figure；
Fig. 9 is the working principle of the invention figure in change case；
Figure 10 is that change case is further change in rear the working principle of the invention figure.
It is shown in figure:
1 nail head 21 of positioning device
101 nail rod portion 22 of clamping block
Elastic piece 102 follows closely tail portion 23
Support rod 11 twists bar 3
Fixed 111 club head 31 of support rod
112 bar transition part 32 of movable support rod
12 rod body 33 of distance rod
13 bar tail portion 34 of distance adjustor
Strut fin 50 in nail 2
The outer fin 60 of annular groove 201
Bottom groove 202
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
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 scope.
In embodiment, the vertebra vertebra section dilator provided according to the present invention comprising positioning device 1, struts nail 2, stubborn bar 3,
As shown in Figure 1.Positioning device 1 includes support rod 11, distance rod 12 and distance adjustor 13, and support rod 11 is again comprising fixed support
Bar 111 and movable support rod 112.One end of distance rod 12 is arranged in fixed support rod 111, and 112 sets of movable support rod in spacing
On bar 12, movable support rod 112, distance rod 12 can generate axially opposing sliding between the two.Movable support rod 112 also with tune
Spacing mechanism 13 is fixedly connected, and can be slided on distance rod 12 simultaneously.12 upper surface of distance rod has been evenly arranged tooth form along axial direction
Striped, distance adjustor 13 under the state of not stressing, by elastic component make its limit film one end be inserted into tooth form striped groove, limitation with
Displacement between distance rod 12.Distance adjustor 12 further includes the idler wheel being meshed with tooth form striped, passes through the drive of idler wheel, spacing
Mechanism 12 and movable support rod 112 are moved towards the direction far from fixed support rod 11；Compression elastic piece, make limit film lift and from
Tooth punching shape striped groove just can freely adjust the position of movable support rod 112.
The tendency of support rod 11 along its length is consistent, and centre exist bending by support rod 11 be divided into upper section with
Lower section: upper section connects distance rod 12；Lower section is cylinder, and there is through-hole in the axial direction.As described in Figure 6, setting in through-hole
Flexible 102,4 pieces of elastic pieces 102 surround a closed polygon radially, and closed polygonal internal is hollow
It constitutes and holds bar space, under reducing condition, 102 shape of elastic piece is arcuation, can hold bar similar to the parabola backwards to through-hole central axes
The geometric center in space is located on through-hole central axes.The both ends of elastic piece 102 be fixed on the inner wall of 11 through-hole of support rod or with
Other elastic pieces are fixedly connected.It is fixed with clamping block 101 on symmetrical two pieces of elastic pieces 102, elastic piece 102 is in reducing condition
When, clamping block 101 is in harvesting state, that is, is integrally located inside support rod 11.As shown in figure 5, being inserted into support rod 11 when twisting bar 3
Through-hole in, and pass through the appearances bar space after, appearance bar spatial area become larger, elastic piece 102 is squeezed and deformed, elastic piece
The vertex of 102 parabolic shape is moved towards far from through-hole central axes direction, the clamping block 101 being attached on elastic piece 102
It moves radially outwards, aperture is arranged in corresponding position on support rod 11, and clamping block 101 can be extruded support rod along aperture
11, i.e. thorn does well.
In preference, the elastic piece 102 is also possible to other kinds of elastic component, such as spring or elastic rod,
And material is also possible to the nonmetallic materials of such as rubber one kind, but when being inserted into view of twisting bar 3, needs elastic component that can hold
By the moment of flexure of certain axial direction, metallic elastic piece is selected preferably.In addition, the appearance bar space boundary can also
To be discontinuous, for example, the both ends of 4 elastic pieces 102 are both connected on the inner wall of 11 through-hole of support rod, circumferentially uniformly divide
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 enable stubborn bar 3 to be more easily inserted and removed from, and disadvantage, which is to process, relatively to be implemented
Example is complicated.For convenience of the installation of clamping block 101 and elastic piece 102, it is preferable that the two can be arranged in the distal end of support rod 11
Position can also be to be connected between two sections, two sections by modes such as screw threads by support rod 11 is divided near its position.It is preferred that
The quantity on ground, elastic piece can be one or more, but quantity crosses multipotency leads to processing difficulties, and quantity then will lead to guiding very little
Function is deteriorated.
As shown in figure 8, in embodiment, twist bar 3 mainly by club head 31, bar transition part 32, rod body 33, bar tail portion 34 according to
It is secondary to connect and compose.Bar 3 is twisted to be inserted into the through-hole of support rod 11.33 section of rod body is circle, and can be changed by bullet
Property piece 102 formed appearance bar space；The section of club head 31 be it is rectangular, be free in calm bar space pass through without causing
Elastic piece 102 deforms；The rounding off of the completion two sections shape of bar transition part 32；34 section of bar tail portion is hexagon, is conveniently made
Stubborn bar 3 is circumferentially turned with tool.Preferably, the section of club head 31 is also possible to non-circular other shapes, such as triangle,
It is quincunx or oval etc.；Bar tail portion 34 can also be to be provided with a narrow groove or other shapes in proximal end face, only need
Tool convenient to use carries out torquing operations to it.
As shown in fig. 7, strutting nail 2 in embodiment and being mainly sequentially connected by nail head 21, nail rod portion 22 and nail tail portion 23
It constitutes.Tail portion 23 is axially disposed blind hole for nail, and support rod 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, which is in thorn, to do well, just it is inserted into the annular groove 201,
It completes to the opposite axial restraint for strutting nail 2 of support rod 11.In the bottom of the blind hole, be equipped with bottom groove 202, shape with
The shape for twisting the club head 31 of bar 3 is consistent and cannot generate between the two relative circumferential movement, when guaranteeing to rotate stubborn bar 3,
Strutting nail 2 can also rotate synchronously.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, strutting the distal outer surface of nail the tail portion aperture inner wall and the support rod 11 of nail 2 in change case
It seamlessly transits, in use process, support rod 11, which is inserted directly into, to be strutted in 2 tail portion apertures of nail, and abandons stubborn rod structure.The knot
Structure greatly reduces the difficulty of processing of vertebra cone section dilator provided by the invention, and is able to satisfy the fixed demand of operation, keeps away
Exempt from the process again to damage vertebra perienchyma using support rod 11.As shown in Figure 10, further, change case support
It opens 2 nail tail portion aperture inner wall outer end of nail and is additionally provided with three interior fins 50；The interior fin 50 prolongs along aperture inner wall circumferential direction
It stretches, extension angle is 180 degree；Support rod proximal end includes outer fin 60；The outer fin 60 is corresponded with the interior fin 50.
The setting of fin can be intermeshed between fin so that support rod 11 is adequately inserted after strutting 2 tail portion apertures of nail, to rise
To the effect of axial restraint.Preferably, the quantity of interior fin 50 is also possible to one or more of, and extension angle is also possible to 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 need to only guarantee that the two is able to carry out engagement, achieve the purpose that axial restraint.Especially, outer fin 60 and interior fin 50
Between, strut nail 2 it is non-coaxial with support rod 11 when or only strut follow closely 2 it is non-coaxial with support rod 11 when be able to carry out and nibble
Close, strut nail 2 it is coaxial with support rod 11 when can be mutually disengaged.
Working principle:
In the present embodiment, the vertebra cone section dilator for inventing offer includes positioning device 1, struts nail 2, twists bar 3, positioning dress
It sets 1 and includes support rod 11, distance rod 12 and distance adjustor 13, support rod 11 is again comprising fixed support rod 111 and movable supporting
Bar 112.Fixed support rod 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 axial to be moved, and the distance between two support rods 11 are adjusted.
Two strut nail and 2 match with two support rods 11, strut and are provided with screw thread on the nail head 21 for follow closely 2, when operation,
Nail will first be strutted 2 to be fixed in the vertebra on pathological interspinal disk both sides, then support rod 11 is inserted into to strut nail 2 aft mounted blind
The distance between Kong Zhong, adjust and fix two support rods 11.Annular groove is uniformly provided with along axial direction on the hole wall of the blind hole
201, the lower section of support rod 11 is provided with through-hole along axial direction, and through-hole is internally provided with clamping block 101 and elastic piece 102, elastic piece 102
Under reducing condition, clamping block 101 is located at the inside of support rod 11.When the rod body 33 for twisting bar 3 passes through the appearance that elastic piece 102 is formed
Behind bar space, elastic piece 102 deforms, and will be connected to clamping block 101 on elastic piece 102 and squeeze out support rod 11, clamping block
101 match with annular groove 201, complete to the opposite axial restraint for strutting nail 2 of support rod 11.And bar 3 is twisted in elastic piece 102
Clamping under, can also keep the axial restraint of opposite support rod 11 in the course of surgery.
After operation, 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 matched bottom groove 202 of 31 shape of head rotates stubborn bar 3 and inserts it into bottom groove 202, no longer generates between the two
Relative circumferential movement.The bar tail portion 34 for twisting bar 3 is provided with the structure conveniently screwed, and the tool of can be used turns it, struts at this time
Nail 2 can also rotate synchronously, and take out from vertebra so that nail 2 will be strutted.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to 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 substantive content of the invention.
Claims (7)
1. a kind of vertebra vertebra section dilator, which is characterized in that comprising strutting nail and positioning device；
The positioning device includes multiple support rods；
The distance between described support rod can be adjusted；
Multiple nails that strut are corresponded with multiple support rods；
The nail that struts can be with the support rod nested encryptions；
The nail that struts includes nail head, nail rod portion and nail tail portion；
The nail head, nail rod portion and nail tail portion are sequentially connected；
Tail portion is axially disposed aperture for nail；
The distal end of the support rod can be nested in the aperture；
The support rod is in axial direction provided with through-hole；
Support rod includes 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 do well in harvesting state and thorn to be switched between 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 support rod outer wall along through-hole radial direction.
2. vertebra vertebra section dilator according to claim 1, which is characterized in that the positioning device also include distance rod with
Distance adjustor；
The support rod includes fixed support rod and movable support rod；
The fixed support rod is fixed on one end of the distance rod；
The movable support rod is connect with the distance adjustor；
Distance adjustor can adjust position of the movable support rod in distance rod axial direction.
3. vertebra vertebra section dilator according to claim 1, which is characterized in that in the nail tail portion aperture 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.
4. vertebra vertebra section dilator according to claim 1, which is characterized in that the elastic component is elastic piece；
There are multiple elastic pieces；Multiple elastic pieces, which are capable of forming, holds bar space；
The geometric center for holding bar space is located on the central axes of through-hole.
5. vertebra vertebra section dilator according to claim 4, which is characterized in that also comprising twisting bar；
The stubborn bar includes club head, bar transition part, rod body, bar tail portion；
The club head, bar transition part, rod body, bar tail portion are sequentially connected；
The stubborn bar is inserted into the through-hole of the support rod；
Stubborn bar can pass through the appearance bar space and cause the change for holding bar spatial geometric shape, twist bar and driven by exclusion elastic component
Dynamic clamping block is moved to thorn by harvesting state and does well.
6. vertebra vertebra section dilator according to claim 5, which is characterized in that the bottom surface for strutting nail aperture 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 movement between nail；
The bar tail portion is equipped with and screws structure.
7. vertebra vertebra section dilator according to claim 5, which is characterized in that the club head cross sectional shape be it is rectangular,
The rod body cross sectional shape is circle；
It in axial direction projects, rod body section is greater than and includes club head section.
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 CN107157530A (en) | 2017-09-15 |
| CN107157530B true CN107157530B (en) | 2019-09-20 |
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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) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111407527B (en) * | 2020-03-25 | 2022-05-17 | 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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2529668B1 (en) * | 2006-06-09 | 2014-08-27 | Zimmer Spine, Inc. | Apparatus for access to and/or treatment of the spine |
| US8454662B2 (en) * | 2006-12-08 | 2013-06-04 | Warsaw Orthopedic, Inc. | Tethers with strength limits for treating vertebral members |
-
2017
- 2017-04-28 CN CN201710296739.5A patent/CN107157530B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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|---|---|
| CN107157530A (en) | 2017-09-15 |
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Granted publication date: 20190920 Termination date: 20200428 |