CN106361390B - A kind of two-way device for spreading of cervical vertebra - Google Patents
A kind of two-way device for spreading of cervical vertebra Download PDFInfo
- Publication number
- CN106361390B CN106361390B CN201511019939.3A CN201511019939A CN106361390B CN 106361390 B CN106361390 B CN 106361390B CN 201511019939 A CN201511019939 A CN 201511019939A CN 106361390 B CN106361390 B CN 106361390B
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- Prior art keywords
- pawl
- sliding block
- rack gear
- arms
- spreading
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- 229910000831 Steel Inorganic materials 0.000 claims description 66
- 239000010959 steel Substances 0.000 claims description 66
- 239000011324 bead Substances 0.000 claims description 33
- 210000003781 tooth socket Anatomy 0.000 claims description 24
- 230000033001 locomotion Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 2
- 230000002457 bidirectional effect Effects 0.000 abstract description 2
- 210000000988 bone and bone Anatomy 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 210000004872 soft tissue Anatomy 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000837 restrainer Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/02—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors
- A61B17/0206—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors with antagonistic arms as supports for retractor elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/02—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; 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
- A61B17/02—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors
- A61B17/025—Joint distractors
- A61B2017/0256—Joint distractors for the spine
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a kind of two-way device for spreading of cervical vertebra, the two-way device for spreading of cervical vertebra includes a rigid staybolt open arms, one flexible staybolt open arms and a rack gear, rigid staybolt open arms is fixedly connected with rack gear, flexible staybolt open arms includes the gear being meshed with rack gear, and it covers on rack gear and gear is accommodated into guide sleeve in the inner and the handle of steerage gear rotation, flexible staybolt open arms further includes a two-way position-limit mechanism, the bidirectionally limited mechanism includes the first pawl and the second pawl being oppositely arranged, and the fixing end of the first pawl and the second pawl is connected on the guide sleeve of gear side.The two-way device for spreading of cervical vertebra of the present invention can carry out bidirectional modulation to spacing is strutted, and significantly increase to the degree of regulation for strutting spacing, and can strut, also can inwardly pressurize.
Description
Technical field
The present invention relates to surgical medical equipment fields, more particularly to a kind of two-way device for spreading of cervical vertebra.
Background technique
Anterior cervical vertebrae dilator is common a kind of medical instrument in anterior cervical operation, and effect is in the course of surgery
The soft tissues such as skin, muscle and two centrums are strutted, expands the soft tissues such as skin, muscle and intervertenral space, operation is facilitated to carry out.
The patent application of Publication No. CN 1838915A discloses a kind of bone dilator, which can be by parallel
Guiding device driving is respectively inserted in the pin in two tubulose key seats and with bone photo to be opened even, makes two bone relative motions to be opened, into
And realize the purpose of bone expansion.
But existing anterior cervical vertebrae dilator is only capable of unidirectionally strutting, and can not carry out accurately to spacing is strutted during surgery
It adjusts, causes great inconvenience to operation.
Summary of the invention
In view of the above drawbacks of the prior art, it is only capable of unidirectionally strutting to solve dilator in the prior art, it cannot
Accurate adjust struts this technical problem of spacing, struts dress the present invention provides a kind of cervical vertebra suitable for Minimally Invasive Surgery is two-way
It sets.
The purpose of the present invention is achieved through the following technical solutions:
A kind of two-way device for spreading of cervical vertebra, the two-way device for spreading of cervical vertebra include a rigid staybolt open arms, and an activity struts
Arm and a rack gear, the rigid staybolt open arms are fixedly connected with the rack gear,
The flexible staybolt open arms includes the gear being meshed with the rack gear, and is covered on the rack gear and by the tooth
Wheel accommodates guide sleeve in the inner and manipulates the handle of the gear rotation, and the flexible staybolt open arms further includes a two-way position restrainer
Structure, the bidirectionally limited mechanism include the first pawl and the second pawl being oppositely arranged, first pawl and second pawl
Fixing end be connected on the guide sleeve of the gear side, and first pawl and the second pawl are arranged to, and work as institute
When stating the movable end of the first pawl and being embedded in the tooth socket of the rack gear, the movable end of second pawl leaves the tooth of the rack gear
Slot, by rotational handle, the flexible staybolt open arms only can be mobile to the direction far from the rigid staybolt open arms；When described second
When the movable end of pawl is embedded in the tooth socket of the rack gear, the movable end of first pawl leaves the tooth socket of the rack gear, leads to
Rotational handle is crossed, the flexible staybolt open arms only can be to close to the movement of the direction of the rigid staybolt open arms.
Further, scale is provided on the rack gear.It can directly read and actually strut distance.
Further, the bidirectionally limited mechanism further includes a pawl base, and the pawl base is equipped with opposite pawl slot,
In the pawl slot of the pawl base, the pawl base is fixed on by a shaft for first pawl and second pawl
In the guide sleeve, first pawl and second pawl are located at the two sides of the shaft.
Further, the pawl base further includes the first elastomeric element corresponding to first pawl and corresponds to described
First elastomeric element of the second pawl, first elastomeric element are resisted against between first pawl and pawl base, and described
Two elastomeric elements are resisted against between second pawl and pawl base.The elastomeric element provides insertion rack gear tooth socket for pawl
Elastic force.
Further, the bidirectionally limited mechanism further includes a sliding block, the sliding block be located at the top of the pawl base and
Can include along the guide sleeve longitudinal sliding motion, the sliding block the first male arms corresponding with first pawl and with second spine
Corresponding second male arms of pawl, when first male arms top is to first pawl, the movable end of first pawl is embedded in institute
It states in the tooth socket of rack gear, the movable end of second pawl leaves the tooth socket of the rack gear；When second male arms top is to described
When the second pawl, the movable end of second pawl is embedded in the tooth socket of the rack gear, and the movable end of first pawl leaves
The tooth socket of the rack gear.
Further, the sliding block has first position and the second position, when the sliding block is located at the first position,
Second male arms top is to second pawl；When the sliding block is located at the second position, first male arms top is to institute
State the first pawl.
Further, a boss is respectively equipped in the two side walls of the sliding block, the top side wall of the guide sleeve is equipped with
The sliding slot matched with the boss, the sliding slot are arranged in parallel with the rack gear, and the boss of the sliding block is embedded in the sliding slot
It is interior, and can be slided along the sliding slot.
Further, a through-hole laterally is set respectively in the first male arms and the second male arms of the sliding block, the through-hole is located at
The two sides of the boss and it is built-in with spring, the both ends of the spring is equipped with a steel ball, the steel in first male arms respectively
Pearl is that the steel ball in the second male arms described in steel ball A is steel ball B, and the sliding slot two sides of the guide sleeve are respectively equipped with two steel bead grooves,
Wherein two steel bead grooves of sliding slot side are respectively steel bead groove A and steel bead groove A ', and the steel bead groove of the sliding slot other side is respectively steel ball
Slot B and steel bead groove B ', the steel ball is in the steel bead groove, and when the sliding block is located at first position, the steel ball A is located at
In the steel bead groove A, the steel ball B is located in the steel bead groove B, stirs the sliding block and passes through the boss in the sliding slot
Sliding, so that the sliding block is changed into the second position by the first position, when the sliding block is located at the second position, institute
It states steel ball A to be located in the steel bead groove A ', the steel ball B is located in the steel bead groove B '.When the sliding block is located at described first
When position, second male arms top is to second pawl；When the sliding block is located at the second position, first male arms
It pushes up to first pawl.
Further, the inside of first male arms and second male arms is cambered surface, two shoulders of the pawl base
For inclined-plane.Pass through the inclined-plane cooperation of the inside cambered surface and pawl base shoulder of the first male arms and the second male arms, it is easier to which sliding block is the
The conversion of one position and the second position.When the sliding block is located at the first position, second male arms passes through the pawl
The shoulder top of seat is to second pawl；When the sliding block is located at the second position, first male arms passes through the spine
The shoulder top of pawl seat is to first pawl.
Compared with prior art, the positive effect of the present invention is:
(1) present invention can easily be adjusted by handle to strutting spacing；
(2) the two-way device for spreading of cervical vertebra of the present invention can carry out bidirectional modulation to spacing is strutted, and significantly increase to support
The standard width of a room in an old-style house away from degree of regulation, and can either strut, also can inwardly pressurize.
It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with
It is fully understood from the purpose of the present invention, feature and effect.
Detailed description of the invention
Fig. 1 is the two-way device for spreading overall structure diagram of cervical vertebra of a preferred embodiment of the invention.
Fig. 2 is the two-way device for spreading partial enlargement structural representation of cervical vertebra of a preferred embodiment of the invention.
Fig. 3 is the two-way device for spreading structural schematic diagram of cervical vertebra of a preferred embodiment of the invention.
Fig. 4 is the bidirectionally limited mechanism partial enlargement knot of the two-way device for spreading of cervical vertebra of a preferred embodiment of the invention
Structure schematic diagram.
Fig. 5 is the two-way device for spreading guide sleeve partial enlargement structural representation of cervical vertebra of a preferred embodiment of the invention
Figure.
Specific embodiment
The embodiment of the present invention is specifically introduced below in conjunction with attached drawing.
As shown in Figure 1, the two-way device for spreading of cervical vertebra in the present embodiment includes a rigid staybolt open arms 1, a flexible staybolt open arms 2
With a rack gear 3, the rigid staybolt open arms 1 is fixedly connected with the rack gear 3,
The flexible staybolt open arms 2 includes the gear 21 being meshed with the rack gear 3, and covers on the rack gear 3 and incite somebody to action
The gear 21 accommodates guide sleeve 22 in the inner and manipulates the handle 23 that the gear 21 rotates, and the flexible staybolt open arms 2 is also
Including a two-way position-limit mechanism 24, which includes the first pawl 241 and the second pawl 242 being oppositely arranged, institute
The fixing end for stating the first pawl 241 and second pawl 242 is connected on the guide sleeve 22 of 21 side of gear, and institute
It states the first pawl 241 and the second pawl 242 is arranged to, when the movable end of first pawl 241 is embedded in the tooth of the rack gear 3
When in slot, the movable end of second pawl 242 leaves the tooth socket of the rack gear 3, by rotational handle, the flexible staybolt open arms
2 only can be mobile to the direction far from the rigid staybolt open arms 1；When the movable end of second pawl 242 is embedded in the rack gear 3
Tooth socket in when, the movable end of first pawl 241 leaves the tooth socket of the rack gear 3, by rotational handle, the flexible staybolt
Open arms 2 only can be to close to the movement of the direction of the rigid staybolt open arms 1.
Scale is provided on the rack gear.It can directly read and actually strut distance.
The bidirectionally limited mechanism 24 further includes a pawl base 243, and the pawl base 243 is equipped with opposite pawl slot
2431, first pawl 241 and second pawl 242 are in the pawl slot 2431 of the pawl base 243, the pawl
Seat 243 is fixed in the guide sleeve 22 by a shaft 245, and first pawl 241 and second pawl 242 are located at institute
State the two sides of shaft.
The pawl base 243 further includes corresponding to the first elastomeric element 2432 of first pawl 241 and corresponding to institute
The first elastomeric element 2432 of the second pawl 242 is stated, first elastomeric element 2432 is resisted against first pawl 241 and spine
Between pawl seat 243, second elastomeric element 2433 is resisted against between second pawl 242 and pawl base 243.The elasticity
Component provides the elastic force of insertion 3 tooth socket of rack gear for pawl.Elastomeric element described in the present embodiment is spring.
The bidirectionally limited mechanism further includes a sliding block 244, the sliding block 244 be located at the top of the pawl base 243 and
Can include along 22 longitudinal sliding motion of guide sleeve, the sliding block 244 first male arms 2441 corresponding with first pawl 241 and
Second male arms 2442 corresponding with second pawl 242, when first male arms 2441 is pushed up to first pawl 241,
The movable end of first pawl 241 is embedded in the tooth socket of the rack gear 3, and the movable end of second pawl 242 leaves described
The tooth socket of rack gear 3；When second male arms 2442 is pushed up to second pawl 242, the movable end of second pawl 242 is embedding
In the tooth socket for entering the rack gear 3, the movable end of first pawl 241 leaves the tooth socket of the rack gear 3.
The sliding block 244 has first position and the second position, when the sliding block 244 is located at the first position, institute
The second male arms 2442 is stated to push up to second pawl 242；When the sliding block 244 is located at the second position, described first is convex
Arm 2441 is pushed up to first pawl 241.
A boss 2443 is respectively equipped in the two side walls of the sliding block 244, the top side wall of the guide sleeve 22 is equipped with
The sliding slot 221 matched with the boss 2443, the sliding slot 221 are arranged in parallel with the rack gear 3, the sliding block 244 it is convex
Platform 2443 is embedded in the sliding slot 221, and can be slided along the sliding slot 221.
A through-hole 2446 is laterally set in the first male arms 2441 and the second male arms 2442 of the sliding block 244 respectively, it is described logical
Hole 2446 is located at the two sides of the boss 2443 and is built-in with spring 2444, and 2444 both ends of spring are equipped with a steel ball respectively
2445, the steel ball in first male arms 2441 is that the steel ball in the second male arms 2442 described in steel ball A is steel ball B, described to lead
Two steel bead grooves 222 are respectively equipped with to 221 two sides of sliding slot of set 22, wherein two steel bead grooves of 221 side of sliding slot are respectively steel
Pearl slot A and steel bead groove A ', the steel bead groove of 221 other side of sliding slot are respectively steel bead groove B and steel bead groove B ', and the steel ball is embedded in described
In steel bead groove, when the sliding block 244 is located at first position, the steel ball A is located in the steel bead groove A, and the steel ball B is located at
In the steel bead groove B, sliding of the sliding block 244 by the boss 2443 in the sliding slot 221 is stirred, the sliding block is made
244 are changed into the second position by the first position, and when the sliding block 244 is located at the second position, the steel ball A is located at
In the steel bead groove A ', the steel ball B is located in the steel bead groove B '.When the sliding block 244 is located at the first position, institute
The second male arms 2442 is stated to push up to second pawl 242；When the sliding block 244 is located at the second position, described first is convex
Arm 2441 is pushed up to first pawl 241.
The inside of first male arms 2441 and second male arms 2442 is cambered surface, two shoulders of the pawl base 243
Portion is inclined-plane.By the inclined-plane cooperation of 243 shoulder of inside cambered surface and pawl base of the first male arms 2441 and the second male arms 2442, more
It is easy to sliding block 244 in the conversion of first position and the second position.When the sliding block 244 is located at the first position, described
Two male arms 2442 are by the shoulder top of the pawl base 243 to second pawl 242；When the sliding block 244 is located at described the
When two positions, first male arms 2441 is by the shoulder top of the pawl base 243 to first pawl 241.
Rigid staybolt open arms 1 and a flexible staybolt open arms 2 are respectively positioned on two vertebras of disease vertebra or more in operation, rotate hand
The adjusting of handle 3 two struts arm to required and struts spacing, two vertebras above and below sick vertebra can be navigated to required aperture, cures
It is sick to carry out cleaning vertebra, distance selection implant plate is strutted according to reading, and carry out subsequent operation.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be within the scope of protection determined by the claims.
Claims (8)
1. a kind of two-way device for spreading of cervical vertebra, which is characterized in that the two-way device for spreading of cervical vertebra include a rigid staybolt open arms, one
Flexible staybolt open arms and a rack gear, the rigid staybolt open arms are fixedly connected with the rack gear,
The flexible staybolt open arms includes the gear being meshed with the rack gear, and covers on the rack gear and hold the gear
The handle of the guide sleeve and manipulation received in the inner the gear rotation, the flexible staybolt open arms further includes a two-way position-limit mechanism,
The bidirectionally limited mechanism includes the first pawl and the second pawl being oppositely arranged, and first pawl and second pawl are consolidated
Fixed end is connected on the guide sleeve of the gear side, and first pawl and the second pawl are arranged to, when described
When the movable end of one pawl is embedded in the tooth socket of the rack gear, the movable end of second pawl leaves the tooth socket of the rack gear,
By rotational handle, the flexible staybolt open arms only can be mobile to the direction far from the rigid staybolt open arms；When second spine
When the movable end of pawl is embedded in the tooth socket of the rack gear, the movable end of first pawl leaves the tooth socket of the rack gear, passes through
Rotational handle, the flexible staybolt open arms only can be to close to the movements of the direction of the rigid staybolt open arms；
Scale is provided on the rack gear；
The bidirectionally limited mechanism further includes a pawl base, and the pawl base is equipped with opposite pawl slot, first pawl
With second pawl in the pawl slot of the pawl base, the pawl base is fixed on the guide sleeve by a shaft
In, first pawl and second pawl are located at the two sides of the shaft.
2. the two-way device for spreading of cervical vertebra as described in claim 1, which is characterized in that the pawl base further includes corresponding to described
First elastomeric element of the first pawl and the second elastomeric element corresponding to second pawl, first elastomeric element against
Between first pawl and pawl base, second elastomeric element is resisted against between second pawl and pawl base.
3. the two-way device for spreading of cervical vertebra as described in claim 1, which is characterized in that the bidirectionally limited mechanism further includes one sliding
Block, the sliding block are located at the top of the pawl base and can include along the guide sleeve longitudinal sliding motion, the sliding block and described
Corresponding first male arms of one pawl and the second male arms corresponding with second pawl, when first male arms top is to described first
When pawl, the movable end of first pawl is embedded in the tooth socket of the rack gear, and the movable end of second pawl leaves described
The tooth socket of rack gear；When second male arms top is to second pawl, the movable end of second pawl is embedded in the rack gear
Tooth socket in, the movable end of first pawl leaves the tooth socket of the rack gear.
4. the two-way device for spreading of cervical vertebra as claimed in claim 3, which is characterized in that the sliding block has first position and second
Position, when the sliding block is located at the first position, second male arms top is to second pawl；When the sliding block is located at
When the second position, first male arms top is to first pawl.
5. the two-way device for spreading of cervical vertebra as claimed in claim 4, which is characterized in that set respectively in the two side walls of the sliding block
There is a boss, the top side wall of the guide sleeve is equipped with the sliding slot matched with the boss, and the sliding slot and the rack gear are flat
The boss of row setting, the sliding block is embedded in the sliding slot, and can be slided along the sliding slot.
6. the two-way device for spreading of cervical vertebra as claimed in claim 5, which is characterized in that the first male arms of the sliding block and second convex
A through-hole laterally is set respectively on arm, the through-hole is located at the two sides of the boss and is built-in with spring, the both ends of the spring point
It is not equipped with a steel ball, the steel ball in first male arms is steel ball A, and the steel ball in second male arms is steel ball B, the guiding
The sliding slot two sides of set are respectively equipped with two steel bead grooves, and wherein the two of sliding slot side steel bead groove is respectively steel bead groove A and steel bead groove
A ', the steel bead groove of the sliding slot other side are respectively steel bead groove B and steel bead groove B ', and the steel ball is in the steel bead groove, when described
When sliding block is located at first position, the steel ball A is located in the steel bead groove A, and the steel ball B is located in the steel bead groove B, stirs
Sliding of the sliding block by the boss in the sliding slot, makes the sliding block be changed into described second by the first position
Position, when the sliding block is located at the second position, the steel ball A is located in the steel bead groove A ', and the steel ball B is located at the steel
In pearl slot B '.
7. the two-way device for spreading of cervical vertebra as claimed in claim 6, which is characterized in that when the sliding block is located at the first position
When, second male arms top is to second pawl；When the sliding block is located at the second position, first male arms top to
First pawl.
8. the two-way device for spreading of cervical vertebra as claimed in claim 7, which is characterized in that first male arms and second male arms
Inside be cambered surface, two shoulders of the pawl base are inclined-plane；Pass through the inside cambered surface and spine of the first male arms and the second male arms
The inclined-plane of pawl seat shoulder cooperates, it is easier to conversion of the sliding block in first position and the second position；When the sliding block is located at described the
When one position, second male arms is by the shoulder top of the pawl base to second pawl；Described in being located at when the sliding block
When the second position, first male arms is by the shoulder top of the pawl base to first pawl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511019939.3A CN106361390B (en) | 2015-12-29 | 2015-12-29 | A kind of two-way device for spreading of cervical vertebra |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511019939.3A CN106361390B (en) | 2015-12-29 | 2015-12-29 | A kind of two-way device for spreading of cervical vertebra |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106361390A CN106361390A (en) | 2017-02-01 |
| CN106361390B true CN106361390B (en) | 2019-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511019939.3A Expired - Fee Related CN106361390B (en) | 2015-12-29 | 2015-12-29 | A kind of two-way device for spreading of cervical vertebra |
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| Country | Link |
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| CN (1) | CN106361390B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107184267A (en) * | 2017-05-31 | 2017-09-22 | 北京市春立正达医疗器械股份有限公司 | A kind of knee joint dilator |
| CN109316212B (en) | 2018-09-07 | 2019-12-31 | 上海锐植医疗器械有限公司 | A spreading blade, a one-way spreading device and a two-way spreading device |
| CN110226951B (en) * | 2019-07-11 | 2024-08-27 | 上海凯利泰医疗科技股份有限公司 | Universal self-locking type pressurizing spreader |
| CN115054359A (en) * | 2022-08-18 | 2022-09-16 | 首都医科大学附属北京潞河医院 | Atlantoaxial lateral joint ventral side spreader and use method thereof |
| CN118078353B (en) * | 2024-04-24 | 2024-06-21 | 南昌市洪都中医院 | ACDF operation centrum struts device and system under backbone scope is supplementary |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7338442B2 (en) * | 2003-04-02 | 2008-03-04 | Peak Performance Company | Crank retractor handle |
| US7618424B2 (en) * | 2005-04-29 | 2009-11-17 | Warsaw Orthopedic, Inc. | Orthopedic instrument |
| US7578822B2 (en) * | 2005-04-29 | 2009-08-25 | Warsaw Orthopedic, Inc. | Instrument for compression or distraction |
| US9335782B2 (en) * | 2007-10-22 | 2016-05-10 | Tibor B. Koros | Ratchet mechanism including lockable pinion assembly |
| DE102011053938A1 (en) * | 2011-09-26 | 2013-03-28 | Aesculap Ag | Surgical retraction system |
| EP2705799B1 (en) * | 2012-09-06 | 2015-05-13 | Medacta International S.A. | Surgical device for minimally invasive spinal fusion and surgical system comprising the same |
| CN104146760B (en) * | 2014-08-22 | 2016-11-02 | 常州华森医疗器械有限公司 | A kind of breastbone closing fixer installation tool |
| CN205849484U (en) * | 2015-12-29 | 2017-01-04 | 闻泰医疗科技（上海）有限公司 | The two-way device for spreading of cervical vertebra |
-
2015
- 2015-12-29 CN CN201511019939.3A patent/CN106361390B/en not_active Expired - Fee Related
Also Published As
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| CN106361390A (en) | 2017-02-01 |
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