CN208551992U - Connector and its locking mechanism - Google Patents
Connector and its locking mechanism Download PDFInfo
- Publication number
- CN208551992U CN208551992U CN201721516286.4U CN201721516286U CN208551992U CN 208551992 U CN208551992 U CN 208551992U CN 201721516286 U CN201721516286 U CN 201721516286U CN 208551992 U CN208551992 U CN 208551992U
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- hole
- locking piece
- tapered end
- connecting shaft
- connector
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- 230000007246 mechanism Effects 0.000 title claims abstract description 44
- 230000013011 mating Effects 0.000 claims abstract description 15
- 230000002265 prevention Effects 0.000 claims description 23
- 239000011324 bead Substances 0.000 claims description 15
- 230000014759 maintenance of location Effects 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 6
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 238000007373 indentation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 21
- 230000008569 process Effects 0.000 description 16
- 238000001356 surgical procedure Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 206010052428 Wound Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 210000000080 chela (arthropods) Anatomy 0.000 description 2
- 238000002324 minimally invasive surgery Methods 0.000 description 2
- 208000020307 Spinal disease Diseases 0.000 description 1
- 208000020339 Spinal injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000000451 tissue damage Effects 0.000 description 1
- 231100000827 tissue damage Toxicity 0.000 description 1
- 230000029663 wound healing Effects 0.000 description 1
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Abstract
The utility model discloses a kind of connector and its locking mechanisms, the locking mechanism includes retaining ring, and retaining ring is set to the connector for being socketed the lateral wall of through-hole equipped with socket through-hole, protrusion and runs through connector along the axis direction of socket through-hole and be socketed the notch of through-hole side wall；One end of tapered end, tapered end is equipped with mating surface and is opened in the card slot of mating surface side wall, and card slot is adapted with the lateral wall of socket through-hole, and the other end of tapered end is equipped with connection through-hole；Connecting shaft, an end face of connecting shaft are equipped with connecting hole, the inner sidewall that connector passes through connection through-hole, is rotatably socketed on connecting hole, and the other end of tapered end is set to the lateral wall of connecting hole by connection through-hole, movable sleeve；And locking piece, it is equipped with retractable structure between locking piece and connecting shaft, locking piece can be made mobile relative to connecting shaft.The connector and its locking mechanism can be realized and strutted, pressurizeed to the pedicle screw of different spacing, different fixed position, and strut, track of pressurizeing it is controllable.
Description
Technical field
The utility model relates to the field of medical instrument technology, more particularly to a kind of connector and its locking mechanism.
Background technique
By the clinical research of many years, spine nail stick internal fixation system has become a kind of more mature vertebral column minimally invasive surgery
Surgical medical instrument is widely used in treating spinal injury and related spinal disease.And Minimally Invasive Surgery can reduce art because of it
Middle tissue damage and bleeding reduce patients surgery slight illness, shorten wound healing time and the pass increasingly by doctor and patient
Note.
Minimally invasive spine surgical process at present: pedicle screw → insertion pitman is squeezed into pedicle screw tail cap → to vertebra
Pedicle screw progress spacing adjustment → be screwed into tight lock screw, makes the locking of pitman and pedicle screw, completes pedicle screw
Between spacing fix.
The spacing between adjacent pedicle screw is adjusted using distraction forcep or pressurized clamp in clinical surgery operation, it should
Traditional method of adjustment there are the problem of: 1) distance different, traditional method of adjustment due to individual, surgery situation between nail seat
Poor between the adjustability of distance nail seat, moreover, nail seat is not there are the concordant of three-dimensional space, many times binding clip can not be embedded in nail
Seat；2) clamping device (such as retaining sleeve) is arranged on binding clip then to support sleeve by gripping means grips sleeve
Open, pressurize, and jaw strut or pressure process in, track be arc, be unable to satisfy to centrum carry out parallel opening, pressurization
Effect, and its arc struts track and fixes, and is unable to satisfy actual clinical operation needs.
Summary of the invention
Based on this, it is necessary to a kind of connector and its locking mechanism are provided, cooperation locking can be socketed with sleeve outer wall, it is right
When sleeve is strutted, pressurizeed, can guarantee that sleeve is fixedly connected with connector contact portion so that strut, pressure process it is reliable,
And contact portion uniform force, it can effectively avoid sleeve because deforming caused by unbalance stress；It can be realized simultaneously between difference
Pedicle screw away from, different fixed position is strutted, is pressurizeed, and struts that track is controllable, and surgical procedure is convenient.
Its technical solution is as follows:
A kind of locked mechanism of connector, including retaining ring, the retaining ring are set to described equipped with socket through-hole, protrusion
It is socketed the connector of the lateral wall of through-hole and runs through the connector and the socket along the axis direction of the socket through-hole
The notch of through-hole side wall；One end of tapered end, the tapered end is equipped with mating surface and is opened in the card slot of the mating surface side wall, described
Card slot is adapted with the lateral wall of the socket through-hole, and the other end of the tapered end is equipped with connection through-hole, the connection through-hole and
The mating surface communicates；Connecting shaft, an end face of the connecting shaft are equipped with connecting hole, and it is logical that the connector passes through the connection
The other end in hole, the inner sidewall for being rotatably socketed on the connecting hole, the tapered end is set to by the connection through-hole, movable sleeve
The lateral wall of the connecting hole, the connecting shaft can pull connector, and the socket through-hole of the retaining ring is made to form clamping section；
And locking piece, the tapered end are set between the locking piece and the retaining ring, between the locking piece and the connecting shaft
Equipped with the retractable structure with lock function, the retractable structure can be such that the locking piece moves relative to the connecting shaft
It is dynamic；Wherein, when the retractable structure, which makes the other end of the locking piece and the tapered end offset, to lock, the connecting shaft is drawn
Dynamic connector makes the socket through-hole of the retaining ring form clamping section；When the retractable structure makes the locking piece and tapered end
The other end separation when, the retaining ring and the tapered end can be rotated relative to the connecting shaft.
It, can when needing to carry out spacing adjustment to pedicle screw using sleeve in carrying out vertebral column minimally invasive surgical operation
To be cooperated using retaining ring by socket through-hole and sleeve socket, tapered end passes through cooperation using the locked mechanism of above-mentioned connector
Face can preferably be bonded sleeve, can adjust the angle between retaining ring and sleeve according to actual needs at this time, reach suitable position
Afterwards, keep locking piece mobile relative to connecting shaft using retractable structure, the locking until other end of locking piece and tapered end offsets, this
Process connecting shaft pulls connector, so that the card slot inner wall of tapered end is bonded extruding with the outer wall for being socketed through-hole, shrinks notch, in turn
So that the inner wall of sleeve through hole is shunk the clamping section to form clamping sleeve, and then locked mechanism can be fixed on the outer wall of sleeve,
Locked mechanism is connect with connector, can be realized and carry out spacing adjustment to pedicle screw.The connector of the utility model
Locked mechanism structure it is reliable, can with sleeve outer wall be socketed cooperation locking, when repeat exert a force when, can guarantee sleeve with connect
Device contact portion is fixedly connected so that strut, pressure process it is reliable, and contact portion uniform force, can effectively avoid sleeve because by
It is deformed caused by power is uneven, improves the accuracy of vertebral column minimally invasive surgical operation, reduce the requirement to surgical operation technology.
Technical solution is illustrated further below:
In one of the embodiments, the lateral wall of the connector be equipped with the first annular projection, the connecting hole it is interior
Side wall, which is equipped with, limits the first annular groove engaged with first annular projection；Or the lateral wall of the connector is equipped with second
Annular groove, the inner sidewall of the connecting hole are equipped with the second annular projection of outside projection, second annular projection with it is described
Second annular groove limit engaging.And then annular snap-in structure is set between connector and connecting hole inner sidewall, realize connection
Head and the rotation connection of connecting hole, and while installing need to only compress notch size shrink connector can to protrude into connecting hole corresponding
Clamped position, can be realized rotation connection after release, the installation of the two is easy to assembly.
It in one of the embodiments, further include the locating part for limiting the closure size of the notch, the limit
Part is set to the indentation, there and the locating part is rotatably socketed on the inner sidewall of the connecting hole.And then using this
Locating part controls the closure size of notch, avoids the deformation of retaining ring excessive, causes the power for squeezing sleeve excessive and make sleeve
It deforms, while can prevent connector from detaching from connecting hole.
The other end of the tapered end is equipped with the first rotation prevention portion, the first rotation prevention portion setting in one of the embodiments,
In the outer end face of the through-hole, an end face of the locking piece is equipped with the second rotation prevention portion to fasten with first rotation prevention portion.
And then it can realize that the rotation stop locking of tapered end and locking piece cooperates using the first rotation prevention portion and the second rotation prevention portion.
In one of the embodiments, first rotation prevention portion be equipped with the first limiting tooth, second rotation prevention portion be equipped with
First limiting tooth is meshed the second limiting tooth of rotation stop.
The connecting shaft is additionally provided with retention bead in one of the embodiments, and the retention bead is set to the company
It connects on the lateral wall in hole, the locking piece is equipped with the limiting groove cooperated with the retention bead rotation stop, the locking piece and institute
The other end for stating tapered end offsets when locking, and the retention bead and the limiting groove rotation stop cooperate.And then it can avoid locking piece
It is offseted when locking with tapered end, tapered end and retaining ring is driven to rotate because of the rotation of the locking piece, cause subsequent to strut operation failure.
In one of the embodiments, the retractable structure include be set to the other end of the connecting shaft screw rod and
Knob, the locking piece are set between the knob and the tapered end, and the knob, which is equipped with, to be cooperated with the screw spiral
Internal thread hole, the knob are cooperated by the internal thread hole and the screw spiral, make the locking piece and the tapered end
The other end offsets locking or separation.And then realize that the other end of locking piece and tapered end offsets lock using the cooperation of knob and screw rod
Gu or separation, move in the spacing that locking piece can be formed between knob and tapered end in use process.
In one of the embodiments, the retractable structure include be fixedly arranged on the other end of the connecting shaft elasticity it is multiple
Position part, the locking piece and the connecting shaft are slided, and one end of the locking piece offsets or connect with the dynamic clamping head and quiet clamping head, separately
The other end of one end towards the tapered end is arranged；When the dynamic clamping head and quiet clamping head in the raw when, the locking piece with it is described
The other end of tapered end offsets locking.And then keep the locking piece mobile relative to connecting shaft using dynamic clamping head and quiet clamping head and can shape
At power is mutually compressed, while making the other end of locking piece and the tapered end offset to lock, connecting shaft can pull connector, make
The socket through-hole of the retaining ring forms clamping section.
The technical program additionally provides a kind of connector, and including above-mentioned locked mechanism, the locked mechanism is two, institute
The first guide through hole for stating the ontology that connecting shaft is equipped with through the connecting shaft, between first guide through hole and the connecting hole
Every being arranged in a staggered manner；It further include guiding axis, the guiding axis respectively lead by first guide through hole corresponding with two locked mechanisms
To cooperation.
It, can when needing to carry out spacing adjustment to pedicle screw using sleeve in carrying out vertebral column minimally invasive surgical operation
To carry out strutting operation using above-mentioned connector.Specifically, can be cooperated first with retaining ring by socket through-hole and sleeve socket,
Tapered end can preferably be bonded sleeve by mating surface, can adjust the angle between retaining ring and sleeve according to actual needs at this time
(it is not concordant in the three-dimensional on sagittal plane, coronal-plane, cross section to adapt to sleeve), after reaching suitable position, utilizes scalable knot
Structure keeps locking piece mobile relative to connecting shaft, and the locking until the other end of locking piece and tapered end offsets, this process connecting shaft pulls
Connector makes the card slot inner wall of tapered end be bonded extruding with the outer wall for being socketed through-hole, shrinks notch, and then make the interior of sleeve through hole
Wall shrinks the clamping section to form clamping sleeve, and then locked mechanism can be fixed on the outer wall of sleeve, and guiding axis is respectively with two
The corresponding first guide through hole guiding cooperation of a locked mechanism, when applying distracting force, or pressurization to sleeve using distraction forcep
It when pincers apply plus-pressure to sleeve, because of the guiding role of guiding axis, slide retaining ring can only along guiding axis, realize between difference
Pedicle screw away from, different fixed position is strutted, is pressurizeed, and track is controllable (parallel opening, pressurization), surgical procedure side
Just.The connector construction of the utility model is reliable, and cooperation locking can be socketed with sleeve outer wall, strutted, pressurizeed to sleeve
When, can guarantee that sleeve is fixedly connected with connector contact portion so that strut, pressure process it is reliable, and contact portion uniform force,
It can effectively avoid sleeve because deforming caused by unbalance stress；It can be realized simultaneously and position fixed to different spacing, difference
Pedicle screw is strutted, is pressurizeed, and it is controllable to strut track, and surgical procedure is convenient, and it is minimally invasive outer to be greatly improved minimally invasive spine
The accuracy of section's operation.
Technical solution is illustrated further below:
In one of the embodiments, the retractable structure include be set to the other end of the connecting shaft screw rod and
Knob, the locking piece are set between the knob and the tapered end, and the knob, which is equipped with, to be cooperated with the screw spiral
Internal thread hole, the knob are cooperated by the internal thread hole and the screw spiral, make the locking piece and the tapered end
The other end offsets locking or separation；First guide through hole is strip through-hole, and the locking piece is equipped with and the strip through-hole
Corresponding second guide through hole or first guide through hole are set to the free end of the screw rod.And then using knob with
The cooperation of screw rod locking or separates to realize that locking piece and the other end of tapered end offset, in use process locking piece can knob with
It is moved in the spacing formed between tapered end, it is easy to operate, it is easy to implement.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of connector described in the utility model；
Fig. 2 is the application schematic diagram of connector described in the utility model；
Fig. 3 is the exploded perspective schematic diagram of locking mechanism described in the utility model；
Fig. 4 is the half-sectional schematic cross-sectional view of the locking mechanism in Fig. 3；
Fig. 5 is the structural blast schematic diagram of the locking mechanism in Fig. 3；
Fig. 6 is the locking state structural schematic diagram of locking mechanism described in the utility model；
Fig. 7 is the half-sectional schematic cross-sectional view of the locking mechanism in Fig. 6.
Description of symbols:
10, locked mechanism, 100, retaining ring, 110, socket through-hole, 120, connector, the 122, first annular projection, 130,
Notch, 200, tapered end, 210, mating surface, 220, card slot, 230, connection through-hole, the 240, first limiting tooth, 300, connecting shaft, 310,
Connecting hole, the 312, first annular recess, 320, retention bead, 330, screw rod, 340, strip through-hole, 400, locking piece, 410,
Two guide through hole, the 420, second limiting tooth, 430, limiting groove, 500, locating part, 600, knob, 610, internal thread hole, 20, lead
To axis, 22, force section, 24, introduction part, 30, sleeve.
Specific embodiment
It is below in conjunction with attached drawing and specifically real for the purpose of this utility model, technical solution and advantage is more clearly understood
Mode is applied, the utility model is described in further detail.It should be understood that the specific embodiments described herein
Only to explain the utility model, the protection scope of the utility model is not limited.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein packet
Include any and all combinations of one or more related listed items.
" first " described in the utility model, " second " do not represent specific quantity and sequence, are only used for title
It distinguishes.
As shown in Figure 1 to Figure 2, the utility model provides a kind of connector, including being detachably fixed connection with sleeve 30
Locked mechanism 10, and the guiding axis 20 being set between two locked mechanisms 10, the setting of the guiding axis 20 make two lockings
Mechanism 10 can be strutted along the length direction of guiding axis 20.
As shown in Fig. 3 to Fig. 7, the locked mechanism 10, comprising: retaining ring 100, retaining ring 100 be equipped with socket through-hole 110,
Protrusion is set to the connector 120 of the lateral wall of socket through-hole 110 and runs through connection along the axis direction of socket through-hole 110
First 120 and be socketed 110 side wall of through-hole notch 130；Tapered end 200, one end of tapered end 200, which is equipped with mating surface 210 and is opened in, matches
The card slot 220 of 210 side wall of conjunction face, card slot 220 are adapted with the lateral wall of socket through-hole 110, and the other end of tapered end 200, which is equipped with, to be connected
Hole 230 is connected, connection through-hole 230 is communicated with mating surface 210；One end face of connecting shaft 300, connecting shaft 300 is equipped with connecting hole
310, the other end of the inner sidewall that connector 120 passes through connection through-hole 230, is rotatably socketed on connecting hole 310, tapered end 200 is logical
Cross connection through-hole 230, movable sleeve is set to the lateral wall of connecting hole 310, connecting shaft 300 can pull connector 120, make retaining ring
100 socket through-hole 110 forms clamping section；And locking piece 400, tapered end 200 are set between locking piece 400 and retaining ring 100,
The retractable structure with lock function is equipped between locking piece 400 and connecting shaft 300, retractable structure can make locking piece
400 is mobile relative to connecting shaft 300；Wherein, when retractable structure makes the other end of locking piece 400 and tapered end 200 offset locking
When, connecting shaft 300 pulls connector 120, and the socket through-hole 110 of retaining ring 100 is made to form clamping section；When retractable structure makes to lock
When determining part 400 and separating with the other end of tapered end 200, retaining ring 100 and tapered end 200 can be rotated relative to connecting shaft 300.Carry out
In vertebral column minimally invasive surgical operation, when needing to carry out spacing adjustment to pedicle screw using sleeve 30, above-mentioned company can use
The locked mechanism 10 for connecing device is cooperated using retaining ring 100 by socket through-hole 110 and the socket of sleeve 30, and tapered end 200 passes through cooperation
Face 210 can preferably be bonded sleeve 30, can adjust the angle between retaining ring 100 and sleeve 30 according to actual needs at this time, arrive
Up to after suitable position, keep locking piece 400 mobile relative to connecting shaft 300 using retractable structure, until locking piece 400 and tapered end
200 other end offsets locking, this process connecting shaft 300 pulls connector 120, makes 220 inner wall of card slot and the socket of tapered end 200
The outer wall of through-hole 110, which is bonded, to be squeezed, and shrinks notch 130, and then the inner wall of 30 through-hole of sleeve is made to shrink to form clamping sleeve 30
Clamping section, and then locked mechanism 10 can be fixed on the outer wall of sleeve 30, locked mechanism 10 is connect with connector
It realizes and carries out spacing adjustment to pedicle screw.10 structure of locked mechanism is reliable, can be socketed and cooperate with 30 outer wall of sleeve
Locking, when being strutted, being pressurizeed to sleeve, can guarantee that sleeve is fixedly connected with connector contact portion, so that strutting, pressurizeing
Journey is reliable, and contact portion uniform force, can effectively avoid sleeve because deforming caused by unbalance stress；It can be realized pair simultaneously
Different spacing, different fixed position pedicle screw strutted, pressurizeed, strut that track is controllable, and surgical procedure is convenient, improve
The accuracy of vertebral column minimally invasive surgical operation reduces the requirement to surgical operation technology.
In the present embodiment, the inner sidewall shape of the socket through-hole 110 is adapted with the outer wall shape of sleeve 30, the tapered end
200 mating surface 210 is adapted with the outer wall shape of sleeve 30, to sleeve when being further reduced 100 locking sleeve 30 of retaining ring
30 extruding force makes 30 uniform stressed of sleeve, and flexible deformation is small, and then can design more compact sleeve 30 and pedicle of vertebral arch screw
Nail cooperation, reduces wound area.It of courses, the shape of the mating surface 210 of the socket through-hole 110 and tapered end 200 can be according to reality
It needs to be configured.
As shown in Fig. 4, Fig. 5 and Fig. 7, in the present embodiment, the lateral wall of connector 120 is equipped with the first annular projection 122,
The inner sidewall of connecting hole 310, which is equipped with, limits the first annular groove engaged with the first annular projection 122.Equivalent, connector 120
Lateral wall be equipped with second annular groove, the inner sidewall of connecting hole 310 is equipped with the second annular projection of outside projection, and second is cyclic annular
Protrusion engages with second annular groove limit.And then annular is set between connector 120 and 310 inner sidewall of connecting hole and engages knot
Structure realizes the rotation connection of connector 120 and connecting hole 310, and need to only compress 130 size of notch when installation to make connector 120
Contraction can protrude into the corresponding clamped position of connecting hole 310, and rotation connection, the installation assembly side of the two can be realized after release
Just.
As shown in Figures 4 and 5, in the present embodiment, further include locating part for limiting the closure size of notch 130
500, locating part 500 is set at notch 130 and locating part 500 is rotatably socketed on the inner sidewall of connecting hole 310.In turn
The closure size that notch 130 can be controlled using the locating part 500, avoids the deformation of retaining ring 100 excessive, causes to squeeze sleeve
30 power is excessive and sleeve 30 is made to deform, while can prevent connector 120 from detaching from connecting hole 310.The limit
Part 500 is equipped with keeps locating part 500 synchronous along same circumference with connector 120 in turn with the protrusion of first annular groove limit engaging
Rotation.
The other end of tapered end 200 is equipped with the first rotation prevention portion, and the first rotation prevention portion is set to the outer end face of through-hole, locking piece 400
An end face be equipped with the second rotation prevention portion for fastening with the first rotation prevention portion.And then can using the first rotation prevention portion and the second rotation prevention portion come
Realize that the rotation stop locking of tapered end 200 and locking piece 400 cooperates, which can be anti-skidding by being arranged with the second rotation prevention portion
Layer, card convex structure or limiting tooth etc. are realized, such as increase the frictional force between tapered end 200 and locking piece 400 using anti-slip layer,
Also the rotation stop locking cooperation of the two can be realized.As shown in Fig. 3 to Fig. 7, in the present embodiment, the first rotation prevention portion is equipped with the first limiting tooth
240, the second rotation prevention portion is equipped with the second limiting tooth 420 of the rotation stop that is meshed with the first limiting tooth 240, and then by between limiting tooth
Engagement realize the separable or rotation stop locking cooperation between locking piece 400 and tapered end 200, after making 200 minor rotation of tapered end,
It also can be by locking piece 400 come rotation stop locking.
As shown in figure 5, connecting shaft 300 is additionally provided with retention bead 320 in any of the above-described embodiment, retention bead 320 is set
It is placed on the lateral wall of connecting hole 310, locking piece 400 is equipped with the limiting groove 430 cooperated with 320 rotation stop of retention bead, locking
The other end of part 400 and tapered end 200 offsets when locking, and retention bead 320 and 430 rotation stop of limiting groove cooperate.And then limit convex
It plays 320 to cooperate with 430 rotation stop of limiting groove, makes locking piece 400 and tapered end 200 offsets when locking, it will not be because of the locking piece 400
It rotates and tapered end 200 and retaining ring 100 is driven to rotate, cause subsequent to strut operation failure.In implementation process, the retention bead
320 can be annular projection or guide rail, and the shape of the limiting groove 430 is adapted with retention bead 320.
The retractable structure with lock function can there are many implementations, such as spiral expanding, elastic telescopic.Such as
Shown in Fig. 3 to Fig. 7, in this specific embodiment, retractable structure include be set to the other end of connecting shaft 300 screw rod 330 and
Knob 600, locking piece 400 are set between knob 600 and tapered end 200, knob 600 be equipped with in 330 threaded engagement of screw rod
Threaded hole 610, knob 600 make the another of locking piece 400 and tapered end 200 by internal thread hole 610 and 330 threaded engagement of screw rod
Hold offset locking or separation；First guide through hole is strip through-hole 340, and locking piece 400 is equipped with corresponding with strip through-hole 340
Second guide through hole 410 or the first guide through hole are set to the free end of screw rod 330.And then utilize knob 600 and screw rod 330
Cooperation lock or separate to realize that locking piece 400 and the other end of tapered end 200 offset, locking piece 400 can be in use process
It is moved in the spacing formed between knob 600 and tapered end 200.
In another embodiment, retractable structure includes being fixedly arranged on the dynamic clamping head and quiet clamping head of the other end of connecting shaft 300 (not show
Out), locking piece 400 and connecting shaft 300 are slided, and one end of locking piece 400 offsets or connect with dynamic clamping head and quiet clamping head, other end direction
The other end of tapered end 200 is arranged；When dynamic clamping head and quiet clamping head in the raw when, locking piece 400 and the other end of tapered end 200 offset
Locking.And then keep locking piece 400 mobile relative to connecting shaft 300 using dynamic clamping head and quiet clamping head and can be formed mutually to compress power, make
The other end of locking piece 400 and tapered end 200 offsets while lock, and connecting shaft 300 can pull connector 120, make retaining ring
100 socket through-hole 110 forms clamping section, and operation is convenient for and that implements every time compresses power equilibrium；The dynamic clamping head and quiet clamping head can be gas
Pressing spring, hydraulic spring grease cup, hardware reset spring etc. specifically cooperate or connect with connecting shaft 300 and locking piece 400 in which way
It connects, can be selected according to actual needs.In this embodiment, the realization side of the locking piece 400 and connecting shaft 300 being slidably connected
Formula can there are many, if locking piece 400 is sheathed in connecting shaft 300, further, between locking piece 400 and connecting shaft 300 also
Equipped with guide frame.
In addition, retractable structure driving locking piece 400 and tapered end 200 offset and in locking engagement process, can be used
The implementation of above-mentioned " be additionally provided with retention bead 320 in connecting shaft 300, be equipped with limiting groove on locking piece 400 " makes
Locking piece 400 and tapered end 200 offset in engagement process, which will not rotate relative to connecting shaft 300.
As shown in Figure 1, in addition, one end of the guiding axis 20 is equipped with force section 22 in the present embodiment, the other end is equipped with and imports
Portion 24.The settable form friction pattern in force section 22 is arranged gum cover, which will be oriented in cone, and then convenient for operator
Axis is inserted into guide through hole.
When above-mentioned connector is applied to carry out spacing adjustment to pedicle screw, socket can be passed through first with retaining ring 100
Through-hole 110 and the socket of sleeve 30 cooperate, and tapered end 200 can preferably be bonded sleeve 30 by mating surface 210, at this time can be according to reality
It needs to adjust the angle between retaining ring 100 and sleeve 30, after reaching suitable position, makes locking piece 400 using retractable structure
Mobile relative to connecting shaft 300, the locking until other end of locking piece 400 and tapered end 200 offsets, this process connecting shaft 300 is drawn
Dynamic connector 120, makes 220 inner wall of card slot of tapered end 200 be bonded extruding with the outer wall for being socketed through-hole 110, shrinks notch 130,
And then the inner wall of 30 through-hole of sleeve is set to shrink the clamping section to form clamping sleeve 30, and then locked mechanism 10 can be fixed on sleeve
On 30 outer wall, the first guide through hole guiding cooperation corresponding with two locked mechanisms 10 respectively of guiding axis 20 is strutted when utilizing
When pincers apply distracting force or pressurized clamp to the application plus-pressure of sleeve 30 to sleeve 30, because of the guiding role of guiding axis 20, make to lock
Ring 100 can only be slided along guiding axis 20, realize that the pedicle screw to different spacing, different fixed positions is strutted, pressurizeed,
And track is controllable (parallel opening, pressurization), the spacing adjustment between pedicle screw is more accurate, and struts repeating force
When, the stress point on sleeve 30 is consistent and uniform force, can effectively avoid colleting deformation；And it can be strutted in the same direction
Or pressurization, greatly improve the accuracy of vertebral column minimally invasive surgical operation.
The utility model has the beneficial effects that
1, cooperation locking, when being strutted, being pressurizeed to sleeve, energy can be socketed with 30 outer wall of sleeve using locking mechanism 10
Enough guarantee that sleeve is fixedly connected with connector contact portion so that strut, pressure process it is reliable, and contact portion uniform force can
It effectively avoids sleeve because deforming caused by unbalance stress, improves the accuracy of minimally invasive spine micro-wound surgical operation.
2, compared with traditional method of adjustment, when sleeve 30 is strutted, is pressurizeed, it can be achieved that different strut, pressurize
Track, and track is controllable (parallel opening, pressurization), can satisfy actual clinical operation needs.
3, compared with traditional method of adjustment, it can be realized and the pedicle of vertebral arch nail seat of different spacing, different fixed positions is carried out
It struts, pressurize, surgical procedure is convenient.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of locked mechanism of connector characterized by comprising
Retaining ring, the retaining ring be equipped with socket through-hole, protrusion be set to it is described socket through-hole lateral wall connector and
Axis direction along the socket through-hole is through the connector and the notch of the socket through-hole side wall；
Tapered end, one end of the tapered end are equipped with mating surface and are opened in the card slot of the mating surface side wall, the card slot with it is described
The lateral wall of socket through-hole is adapted, and the other end of the tapered end is equipped with connection through-hole, the connection through-hole and the mating surface
It communicates；
Connecting shaft, an end face of the connecting shaft are equipped with connecting hole, and the connector passes through the connection through-hole, rotatably socket
The connecting hole is set to by the connection through-hole, movable sleeve in the other end of the inner sidewall of the connecting hole, the tapered end
Lateral wall, the connecting shaft can pull connector, and the socket through-hole of the retaining ring is made to form clamping section；And
Locking piece, the tapered end are set between the locking piece and the retaining ring, the locking piece and the connecting shaft it
Between be equipped with the retractable structure with lock function, the retractable structure can make the locking piece relative to the connecting shaft
It is mobile；
Wherein, when the retractable structure, which makes the other end of the locking piece and the tapered end offset, to lock, the connecting shaft
Connector is pulled, the socket through-hole of the retaining ring is made to form clamping section；When the retractable structure makes the locking piece and lock
When the other end separation of head, the retaining ring and the tapered end can be rotated relative to the connecting shaft.
2. locked mechanism according to claim 1, which is characterized in that it is cyclic annular convex that the lateral wall of the connector is equipped with first
It rises, the inner sidewall of the connecting hole, which is equipped with, limits the first annular groove engaged with first annular projection；Or the connection
The lateral wall of head is equipped with second annular groove, and the inner sidewall of the connecting hole is equipped with the second annular projection of outside projection, described
Second annular projection engages with second annular groove limit.
3. locked mechanism according to claim 1, which is characterized in that further include the closure size for limiting the notch
Locating part, the locating part is set to the indentation, there and the locating part is rotatably socketed on the inside of the connecting hole
On wall.
4. locked mechanism according to claim 1, which is characterized in that the other end of the tapered end is equipped with the first rotation prevention portion,
First rotation prevention portion is set to the outer end face of the through-hole, and an end face of the locking piece is equipped with and the first rotation prevention portion phase
Second rotation prevention portion of engaging.
5. locked mechanism according to claim 4, which is characterized in that first rotation prevention portion is equipped with the first limiting tooth, institute
State the second limiting tooth that the second rotation prevention portion is equipped with the rotation stop that is meshed with first limiting tooth.
6. locked mechanism according to claim 1, which is characterized in that the connecting shaft is additionally provided with retention bead, the limit
Position protrusion is set on the lateral wall of the connecting hole, and it is recessed that the locking piece is equipped with the limit cooperated with the retention bead rotation stop
Slot, the other end of the locking piece and the tapered end offsets when locking, and the retention bead and the limiting groove rotation stop cooperate.
7. locked mechanism according to any one of claims 1 to 6, which is characterized in that the retractable structure includes setting
In the screw rod and knob of the other end of the connecting shaft, the locking piece is set between the knob and the tapered end, described
Knob is equipped with the internal thread hole cooperated with the screw spiral, and the knob is matched by the internal thread hole and the screw spiral
It closes, so that the locking piece is offseted with the other end of the tapered end and lock or separate.
8. locked mechanism according to any one of claims 1 to 6, which is characterized in that the retractable structure includes fixed
In the dynamic clamping head and quiet clamping head of the other end of the connecting shaft, the locking piece and the connecting shaft are slided, one end of the locking piece
It offsets or connect with the dynamic clamping head and quiet clamping head, the other end of the other end towards the tapered end is arranged；At the dynamic clamping head and quiet clamping head
When nature, the other end of the locking piece and the tapered end offsets locking.
9. a kind of connector, which is characterized in that including locked mechanism as claimed in any one of claims 1 to 8, the locking machine
Structure be two, the connecting shaft be equipped with through the connecting shaft ontology the first guide through hole, first guide through hole with
The connecting hole interval is arranged in a staggered manner；It further include guiding axis, the guiding axis respectively corresponding with two locked mechanisms described
The guiding cooperation of one guide through hole.
10. connector according to claim 9, which is characterized in that the retractable structure includes being set to the connection
The screw rod and knob of the other end of axis, the locking piece are set between the knob and the tapered end, the knob be equipped with
The internal thread hole of the screw spiral cooperation, the knob are cooperated by the internal thread hole and the screw spiral, are made described
Locking piece offsets with the other end of the tapered end to be locked or separates；First guide through hole is strip through-hole, the locking piece
The freedom of the screw rod is set to equipped with the second guide through hole corresponding with the strip through-hole or first guide through hole
End.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721516286.4U CN208551992U (en) | 2017-11-14 | 2017-11-14 | Connector and its locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721516286.4U CN208551992U (en) | 2017-11-14 | 2017-11-14 | Connector and its locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208551992U true CN208551992U (en) | 2019-03-01 |
Family
ID=65445659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721516286.4U Withdrawn - After Issue CN208551992U (en) | 2017-11-14 | 2017-11-14 | Connector and its locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208551992U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107854170A (en) * | 2017-11-14 | 2018-03-30 | 山东威高骨科材料股份有限公司 | Connector and its locking mechanism |
| CN112971950A (en) * | 2021-02-04 | 2021-06-18 | 山东威高骨科材料股份有限公司 | Connector assembly and surgical device |
-
2017
- 2017-11-14 CN CN201721516286.4U patent/CN208551992U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107854170A (en) * | 2017-11-14 | 2018-03-30 | 山东威高骨科材料股份有限公司 | Connector and its locking mechanism |
| CN112971950A (en) * | 2021-02-04 | 2021-06-18 | 山东威高骨科材料股份有限公司 | Connector assembly and surgical device |
| CN112971950B (en) * | 2021-02-04 | 2022-05-20 | 山东威高骨科材料股份有限公司 | Connector assembly and surgical device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190301 Effective date of abandoning: 20200310 |