CN209203369U - A kind of intervertebral opening device - Google Patents
A kind of intervertebral opening device Download PDFInfo
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- CN209203369U CN209203369U CN201821594702.7U CN201821594702U CN209203369U CN 209203369 U CN209203369 U CN 209203369U CN 201821594702 U CN201821594702 U CN 201821594702U CN 209203369 U CN209203369 U CN 209203369U
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- plates
- clamp handle
- binding clip
- intervertebral
- opening device
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Abstract
The utility model discloses a kind of intervertebral opening devices, to reduce during strutting intervertenral space to the damage of terminal plate of vertebral body.Intervertebral opening device includes parallel opening caliper and struts portion, wherein: parallel opening caliper includes hinged the first clamp handle and the second clamp handle, and be respectively arranged at the first binding clip and the second binding clip of the first clamp handle distal end and the second clamp handle distal end, the first binding clip and the second binding clip be arranged in parallel and can when the first clamp handle and the second clamp handle are relatively rotated close to or far from；The portion of strutting includes the first plates and the second plates for being respectively arranged at the first binding clip distal end and the second binding clip distal end, and the first plates have the first supporting surface back to the second plates, and the second plates have the second supporting surface back to the first plates.
Description
Technical field
The utility model relates to the field of medical instrument technology, more particularly to a kind of intervertebral opening device.
Background technique
Lumbar vertebrae side anterior lateral cervical approach intervertebral fusion performs the operation (Oblique Lumber Interbody Fusion, abbreviation OLIF)
It is newer spinal surgery mode, this kind of modus operandi approach damage is small, can plant the bigger Invasive lumbar fusion device of volume, has
Help bone grafting Bony union, and can preferably restore disc height and lordosis and coronal face balance, while can be with
Indirect decompression, to reduce neurotrosis and adhesion.
In order to achieve the purpose that restore disc height and indirect decompression, most important step is exactly to incite somebody to action in OLIF operation
Intervertenral space struts, and generallys use sheet dilator or die trial dilator in the prior art to strut intervertenral space.Sheet dilator
When in use, it needs to enter its flat support chip plug flat between two centrums, is rotated by 90 ° holds up support chip later, make to prop up
Soleplate abutting contact, intervertenral space is strutted above and below the outer profile edge of blade and two centrums；Die trial dilator when in use, then
It needs directly to squeeze into the consistent die trial of Invasive lumbar fusion device shape of itself and quasi- merging between two centrums, is realized with this and strut intervertebral
The purpose of gap.
Defect of the existing technology is, for sheet dilator, when strutting intervertenral space, and the edge of support chip
Always abutted with soleplate above and below two centrums, and support chip is than relatively thin, the contact area of soleplate and support chip will very little, in this way
The local pressure that will lead to soleplate is excessive, easily causes breakage；For die trial dilator, die trial needs gradually to squeeze into two
Between centrum, and only have the regional area of die trial front end to contact with upper and lower soleplate when initially squeezing into, therefore this kind struts mode
Equally existing leads to the risk of soleplate breakage since the local pressure of soleplate is excessive；In addition, sheet dilator and die trial strut
There are many dimensions for device, the actual conditions according to patient are needed during strutting intervertenral space, according to ascending
Sequence tries out various sizes of dilator step by step, until be determined to the dilator of the distracted suitable dimension of intervertenral space, so that
Surgical procedure is relatively complicated.
Utility model content
The purpose of the utility model embodiment is to provide a kind of intervertebral opening device, to reduce during strutting intervertenral space
Damage to terminal plate of vertebral body.
The utility model embodiment provides a kind of intervertebral opening device, including parallel opening caliper and struts portion, in which:
The parallel opening caliper includes hinged the first clamp handle and the second clamp handle, and is respectively arranged at first pincers
The first binding clip and the second binding clip of handle distal end and second clamp handle distal end, first binding clip is parallel with second binding clip to be set
Set and can when first clamp handle and second clamp handle are relatively rotated close to or far from；
The portion of strutting includes the first sheet for being respectively arranged at the first binding clip distal end and second binding clip distal end
Body and the second plates, first plates have the first supporting surface back to second plates, second sheet
Body has the second supporting surface back to first plates；First supporting surface and second supporting surface are set with quasi- respectively
The shape for entering the upper and lower surfaces of the Invasive lumbar fusion device in intervertenral space matches, wherein the upper table of the Invasive lumbar fusion device
Face and lower surface are respectively the surface abutted against with the soleplate of upper centrum and the next centrum.
In a specific embodiment, the width of first plates is 18 ± 0.5mm；And/or described second
The width of plates is 18 ± 0.5mm.
In a specific embodiment, the length of first plates be 40 ± 0.5mm, 45 ± 0.5mm or
50±0.5mm；And/or the length of second plates is 40 ± 0.5mm, 45 ± 0.5mm or 50 ± 0.5mm.
In a specific embodiment, first plates are removably connected to the distal end of first binding clip,
Second plates are removably connected to the distal end of second binding clip.
In a specific embodiment, the parallel opening caliper further includes in the hinged first connecting rod of X shape and the
Two connecting rods, one end of the first connecting rod and first binding clip are hinged, and the other end is slidably connected with second binding clip；It is described
One end of second connecting rod is slidably connected with first binding clip, and the other end and second binding clip are hinged.
In a specific embodiment, the parallel opening caliper further includes rack gear, one end of the rack gear and institute
The proximal hinge of the first clamp handle is stated, the other end can be clamped with the hole that passes through for the proximal end for being opened in second clamp handle.
In a specific embodiment, scale is indicated on the rack gear.
In a specific embodiment, the parallel opening caliper further include adjusting screw rod and with the adjusting spiral shell
The locking nut that bar is threadedly engaged, the proximal hinge of one end of the adjusting screw rod and first clamp handle, the other end may pass through
Be opened in the through-hole of the proximal end of second clamp handle and with the locking nut thread connection.
In a specific embodiment, the surface of first clamp handle has anti-skid chequer；And/or second pincers
The surface of handle has anti-skid chequer.
In a specific embodiment, the parallel opening caliper further includes spring leaf, and the spring leaf is limited in
Between first clamp handle and second clamp handle.
When strutting intervertenral space using intervertebral opening device provided by the embodiment of the utility model, the portion of strutting is inserted into two vertebras first
Between body, the jaw for keeping the first binding clip and the second binding clip to be formed in insertion be in closed state, such first plates with
Between second plates also more close to so that the height for strutting portion is smaller, thus can reduce strutted in insertion process portion with
Frictional force between terminal plate of vertebral body, to reduce the damage to terminal plate of vertebral body；Will the portion of strutting be inserted into two centrums between after, operation
First clamp handle and the second clamp handle, open jaw gradually, and the spacing between such first plates and the second plates is also therewith
It is gradually increased, in the process, the first supporting surface of the first plates abuts with the soleplate of upper centrum and applies upwards to it
Active force, the second supporting surface of the second plates abuts with the soleplate of the next centrum and applies downward active force to it, from
And the intervertenral space of two centrums is gradually strutted, it is seen then that it is always face contact between program intervertebral opening device and two terminal plate of vertebral body,
Also, since the first supporting surface and the shape of the upper surface of the Invasive lumbar fusion device in quasi- merging intervertenral space match, the second support
The shape of face and the lower surface of Invasive lumbar fusion device matches, in this way, when strutting intervertenral space, the first supporting surface and the second support
Also more agree between face and the soleplate of two centrums, ensure that biggish contact area, therefore, compared with prior art, right
Terminal plate of vertebral body apply it is identical compress active force in the case where, the program make terminal plate of vertebral body bear stress it is relatively small, from
And it can reduce damage during strutting intervertenral space to terminal plate of vertebral body；In addition, the program by operation the first clamp handle and
The height in the portion of strutting can be adjusted in second clamp handle, therefore no replacement is required during strutting dilator, simplifies surgical procedure.
Detailed description of the invention
Fig. 1 is the structural schematic diagram one of the utility model embodiment intervertebral opening device；
Fig. 2 is the structural schematic diagram two of the utility model embodiment intervertebral opening device.
Appended drawing reference:
10- parallel opening caliper 20- struts portion 11- the first clamp handle 12- the second clamp handle the first binding clip of 13- 14- second
Binding clip 21- the first plates 22- the second plates 23- the first supporting surface 24- the second supporting surface 15- first connecting rod 16-
Second connecting rod 17- rack gear 18- scale 19- spring leaf
Specific embodiment
In order to reduce damage during strutting intervertenral space to terminal plate of vertebral body, the utility model embodiment provides one
Kind intervertebral opening device.It is practical to this by the following examples to keep the purpose of this utility model, technical solution and advantage clearer
It is novel to be described in further detail.
As depicted in figs. 1 and 2, the utility model embodiment provides a kind of intervertebral opening device, including parallel opening caliper
10 and strut portion 20, in which:
Parallel opening caliper 10 includes hinged the first clamp handle 11 and the second clamp handle 12, and is respectively arranged at the first clamp handle
The first binding clip 13 and the second binding clip 14 of 12 distal end of 11 distal ends and the second clamp handle, the first binding clip 13 and the second binding clip 14 are arranged in parallel
And can when the first clamp handle 11 and the second clamp handle 12 are relatively rotated close to or far from；
Strutting portion 20 includes 21 He of the first plates for being respectively arranged at 14 distal end of 13 distal end of the first binding clip and the second binding clip
Second plates 22, the first plates 21 have the first supporting surface 23 back to the second plates 22, and the second plates 22 have
Back to the second supporting surface 24 of the first plates 21；The upper table of first supporting surface 23 and the Invasive lumbar fusion device in quasi- merging intervertenral space
The shape in face matches, and the second supporting surface 24 and the shape of the lower surface of Invasive lumbar fusion device match, wherein Invasive lumbar fusion device
Upper and lower surfaces are respectively the surface abutted against with the soleplate of upper centrum and the next centrum.
In the utility model embodiment, " distal end " refers to the side when instrument is operated far from user, correspondingly,
" proximal end " then refers to the side when instrument is operated close to user.
Wherein, the specific connection structure between the first clamp handle 11 and the second clamp handle 12 and the first binding clip 13 and the second binding clip 14
It is unlimited, as long as guaranteeing that two binding clips can generate relative translation under the drive of two clamp handles.For example, implementation shown in Fig. 2
In example, parallel opening caliper 10 further include in the hinged first connecting rod 15 and second connecting rod 16 of X shape, one end of first connecting rod 15 with
First binding clip 13 is hinged, and the other end is slidably connected with the second binding clip 14；One end of second connecting rod 16 and the first binding clip 13 slide
Connection, the other end and the second binding clip 14 are hinged.When specific setting, cunning is offered respectively on the first binding clip 13 and the second binding clip 14
Slot, first connecting rod 15 and second connecting rod 16 are respectively provided with slidable fit in the sliding pin in corresponding sliding slot.
When strutting intervertenral space using intervertebral opening device provided by the embodiment of the utility model, the insertion of portion 20 two will be strutted first
Between centrum, the jaw for keeping the first binding clip 13 and the second binding clip 14 to be formed in insertion is in closed state, as shown in Figure 1,
Also more close to so that the height for strutting portion 20 is smaller, therefore can be between such first plates 21 and the second plates 22
Reduce the frictional force strutted between portion 20 and terminal plate of vertebral body in insertion process, to reduce the damage to terminal plate of vertebral body；It will support
After opening between two centrums of the insertion of portion 20, the first clamp handle 11 and the second clamp handle 12 are operated, opens jaw gradually, such first sheet
Spacing between body 21 and the second plates 22 is also gradually increased therewith, as shown in Fig. 2, in the process, the first plates 21
The first supporting surface 23 abut and apply to it upward active force with the soleplate of upper centrum, second of the second plates 22
Support face 24 abuts with the soleplate of the next centrum and applies downward active force to it, so that the intervertenral space of two centrums gradually be supportted
Open, it is seen then that be always face contact between program intervertebral opening device and two terminal plate of vertebral body, also, due to the first supporting surface 23 with
The shape of the upper surface of Invasive lumbar fusion device in quasi- merging intervertenral space matches, the following table of the second supporting surface 24 and Invasive lumbar fusion device
The shape in face matches, in this way, when strutting intervertenral space, the soleplate of the first supporting surface 23 and the second supporting surface 24 and two centrums
Between more agree with, ensure that biggish contact area, therefore, compared with prior art, to terminal plate of vertebral body apply it is identical
In the case where compressing active force, the stress that the program bears terminal plate of vertebral body is relatively small, is strutting vertebra so as to reduce
To the damage of terminal plate of vertebral body during gap；In addition, the program is i.e. adjustable by the first clamp handle 11 of operation and the second clamp handle 12
The whole height for strutting portion 20, therefore no replacement is required during strutting dilator, simplify surgical procedure.
In the utility model embodiment, the specific width of the first plates is unlimited, such as can be by the first plates
Width design is 18 ± 0.5mm.It should be understood that in the other embodiments of the utility model, the width of the second plates
It can be 18 ± 0.5mm.The specific length of first plates can be designed according to the size of the centrum of body different parts,
Such as in the utility model embodiment, the first plates include length be respectively 40 ± 0.5mm, 45 ± 0.5mm and 50 ±
Three kinds of dimensions of 0.5mm can select size suitable first according to the size of the centrum of specific operative site when operation
Shape body, to increase the first supporting surface and terminal plate of vertebral body as far as possible under the premise of not influencing the operation ease of intervertebral opening device
Contact area.Similarly, the length of the second plates may be designed in 40 ± 0.5mm, 45 ± 0.5mm and 50 ±
Tri- kinds of dimensions of 0.5mm.It should be noted that in this embodiment, the length of the first plates or the second plates refer to by
The size of the extending direction of its proximal end to distal end, corresponding, the width of the first plates or the second plates then refers to be extended with it
The size in the perpendicular direction in direction.
In the utility model embodiment, the first plates and the second plates are removably attachable to the first binding clip respectively
With the distal end of the second binding clip, in this way, need to only configure a parallel opening caliper, each hand for the plates of sizes specification
Suitable first plates of size and the second plates can be selected to be installed on the parallel support according to specific operative site when art
It opens on caliper, to reduce the cost of intervertebral opening device.Wherein, the first plates and the second plates and the first binding clip and second
The detachable connection method of binding clip is unlimited, such as can connect or be clamped by fastener.
As shown in Figure 1, parallel opening caliper 10 includes rack gear 17, rack gear 17 in one embodiment of the utility model
One end and the first clamp handle 11 proximal hinge, the other end can with the proximal end for being opened in the second clamp handle 12 pass through hole (in figure not
Show) clamping, after the portion that struts 20 struts intervertenral space, by the rack gear 17 of clamping with pass through hole can be by the height in the portion that struts 20
Locking is convenient for subsequent procedures operation.Preferably, scale 18 is indicated on rack gear 17, in this way according to the clamping position of rack gear 17
Size can converse the jaw deployed height of parallel opening caliper 10, that is, strut portion 20 strut height, thus really
Surely the Invasive lumbar fusion device of which kind of specification need to be implanted into.Please continue to refer to shown in Fig. 1, parallel opening caliper 10 further includes being limited in first
Spring leaf 19 between clamp handle 11 and the second clamp handle 12, so that the first clamp handle 11 and the second clamp handle 12 can be in the bullets of spring leaf 19
Property effect under the state as shown in state reset to Fig. 1 shown in Fig. 2, improve the ease of use of intervertebral opening device.
In another embodiment of the utility model, parallel opening caliper include adjusting screw rod and with adjusting screw rod screw thread
The locking nut of cooperation, the proximal hinge of one end of adjusting screw rod and the first clamp handle, the other end, which may pass through, is opened in the second clamp handle
Proximal end through-hole and with locking nut thread connection.Using the example scheme, adjusting screw rod is locked by locking nut
It equally may be implemented that the purpose that the height in portion locks will be strutted.
Refering to what is shown in Fig. 1, the surface of the first clamp handle and the second clamp handle is additionally provided with anti-skid chequer, to increase instrument gripping
Stability.
Obviously, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in the art
Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.
Claims (10)
1. a kind of intervertebral opening device, the intervertebral opening device is performed the operation applied to lumbar vertebrae side anterior lateral cervical approach intervertebral fusion, and feature exists
In, including parallel opening caliper and strut portion, in which:
The parallel opening caliper includes hinged the first clamp handle and the second clamp handle, and to be respectively arranged at first clamp handle remote
First binding clip and the second binding clip at end and second clamp handle distal end, first binding clip and second binding clip be arranged in parallel and
Can when first clamp handle and second clamp handle are relatively rotated close to or far from；
The portion of strutting include be respectively arranged at first binding clip distal end and second binding clip distal end the first plates and
Second plates, first plates have the first supporting surface back to second plates, the second plates tool
There is the second supporting surface back to first plates；First supporting surface and second supporting surface respectively with quasi- merging vertebra
The shape of the upper and lower surfaces of Invasive lumbar fusion device in gap matches, wherein the upper surface of the Invasive lumbar fusion device and
Lower surface is respectively the surface abutted against with the soleplate of upper centrum and the next centrum.
2. intervertebral opening device as described in claim 1, which is characterized in that the width of first plates is 18 ± 0.5mm；
And/or the width of second plates is 18 ± 0.5mm.
3. intervertebral opening device as described in claim 1, which is characterized in that the length of first plates be 40 ± 0.5mm,
45 ± 0.5mm or 50 ± 0.5mm；And/or the length of second plates is 40 ± 0.5mm, 45 ± 0.5mm or 50
±0.5mm。
4. intervertebral opening device as described in claim 1, which is characterized in that first plates are removably connected to described
The distal end of one binding clip, second plates are removably connected to the distal end of second binding clip.
5. intervertebral opening device as described in claim 1, which is characterized in that the parallel opening caliper further includes hinged in X shape
First connecting rod and second connecting rod, one end of the first connecting rod and first binding clip are hinged, the other end and it is described second pincers
Head is slidably connected；One end of the second connecting rod is slidably connected with first binding clip, and the other end and second binding clip are hinged.
6. intervertebral opening device as described in claim 1, which is characterized in that the parallel opening caliper further includes rack gear, described
The proximal hinge of one end of rack gear and first clamp handle, the other end can be with the proximal ends for being opened in second clamp handle across hole
Clamping.
7. intervertebral opening device as claimed in claim 6, which is characterized in that indicate scale on the rack gear.
8. intervertebral opening device as described in claim 1, which is characterized in that the parallel opening caliper further include adjusting screw rod with
And the locking nut being threadedly engaged with the adjusting screw rod, the proximal end hinge of one end of the adjusting screw rod and first clamp handle
Connect, the other end may pass through the through-hole for being opened in the proximal end of second clamp handle and with the locking nut thread connection.
9. intervertebral opening device as described in claim 1, which is characterized in that the surface of first clamp handle has anti-skid chequer；With/
Or, the surface of second clamp handle has anti-skid chequer.
10. intervertebral opening device as described in any one of claims 1 to 9, which is characterized in that the parallel opening caliper further includes
Spring leaf, the spring leaf are limited between first clamp handle and second clamp handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821594702.7U CN209203369U (en) | 2018-09-28 | 2018-09-28 | A kind of intervertebral opening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821594702.7U CN209203369U (en) | 2018-09-28 | 2018-09-28 | A kind of intervertebral opening device |
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| Publication Number | Publication Date |
|---|---|
| CN209203369U true CN209203369U (en) | 2019-08-06 |
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ID=67454882
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821594702.7U Active CN209203369U (en) | 2018-09-28 | 2018-09-28 | A kind of intervertebral opening device |
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| Country | Link |
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| CN (1) | CN209203369U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114099096A (en) * | 2021-11-08 | 2022-03-01 | 北京市春立正达医疗器械股份有限公司 | Parallel acetabulum distraction device |
-
2018
- 2018-09-28 CN CN201821594702.7U patent/CN209203369U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114099096A (en) * | 2021-11-08 | 2022-03-01 | 北京市春立正达医疗器械股份有限公司 | Parallel acetabulum distraction device |
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