CN214857020U - Special channel spreader for minimally invasive transforaminal lumbar interbody fusion - Google Patents
Special channel spreader for minimally invasive transforaminal lumbar interbody fusion Download PDFInfo
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- CN214857020U CN214857020U CN202120637127.XU CN202120637127U CN214857020U CN 214857020 U CN214857020 U CN 214857020U CN 202120637127 U CN202120637127 U CN 202120637127U CN 214857020 U CN214857020 U CN 214857020U
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Abstract
The special channel spreader for minimally invasive transforaminal lumbar interbody fusion comprises an installation rod, wherein two groups of pedicle screw sleeve fixing assemblies are installed on the installation rod; a transverse mounting sleeve is fixed at the upper end of the mounting rod, a length rod is inserted into the mounting sleeve, the length rod is horizontally arranged rightwards, and a first jacking bolt is connected onto the mounting sleeve in a threaded manner; in conclusion, the invention completes the multi-directional adjustment of the two groups of the strutting semicircular tubes through the components such as the length rod, the angle adjusting bolt, the depth adjusting rod and the like, and finally completes the establishment of a proper operation channel; the invention has simple structure and convenient use, does not influence the operation and can quickly establish a stable operation channel.
Description
Technical Field
The invention belongs to the technical field of medical treatment, and particularly relates to a special channel spreader for minimally invasive transforaminal lumbar interbody fusion.
Background
MIS-TILF (Minimally Invasive Transformamine Lumbar Interbody Fusion), which is a Minimally Invasive Transforaminal Lumbar intervertebral Fusion, is mainly used for treating diseases such as Lumbar spinal stenosis, Lumbar disc herniation, Lumbar instability, Lumbar degeneration and the like; at present, the fixation of a working channel is mainly solved by fixing a bracket on an operating table or holding the working channel by an assistant, the working channel is fixed by fixing the bracket on the operating table, the bracket of the working channel has large volume, so that the placing and the sterile operation are difficult, the operation process is complicated, and the channel can be stably fixed by locking multiple joints; the weight of the fixing bracket is larger, and if the fixing bracket is carelessly placed, iatrogenic damage can be caused to a patient; the working channel is difficult to adjust after the bracket is fixed, and the working angle of the channel is difficult to adjust according to the operation requirement; the mode of holding by an assistant is adopted for fixing, the stability of a fixed channel is difficult to ensure, the displacement of a working channel in the operation is easy to cause, and meanwhile, the personnel are wasted.
Disclosure of Invention
The invention provides a special channel spreader for minimally invasive transforaminal lumbar interbody fusion, which is convenient for adjusting a working channel and aims to overcome the defects in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme: the special channel spreader for minimally invasive transforaminal lumbar interbody fusion comprises an installation rod, wherein two groups of pedicle screw sleeve fixing assemblies are installed on the installation rod;
the upper end of installation pole is fixed with horizontal installation cover, the installation cover interpolation is equipped with the length pole, the length pole level sets up right, threaded connection has first roof pressure bolt on the installation cover, the inner and the length pole top press fit of first roof pressure bolt, the below of length pole is provided with the mount pad, be provided with distraction degree adjustment mechanism between mount pad and the length pole, distraction degree adjustment mechanism is used for adjusting the distance between mount pad and the length pole, the right side of mount pad and the right-hand member of length pole all are provided with the passageway and strut the piece, two sets of passageways strut a mirror image setting.
The pedicle screw sleeve fixing assembly comprises a movable sleeve, the movable sleeve is sleeved on the installation rod and can slide up and down along the installation rod, a second jacking bolt is connected onto the movable sleeve in a threaded mode, the inner end of the second jacking bolt is in press fit with the top of the installation rod, and the movable sleeve is hinged to a fixing sleeve through a ball hinge.
The opening degree adjusting mechanism comprises a guide rack which is arranged along the vertical direction, the upper end of the guide rack is fixed on the bottom surface of the length rod, a vertical channel is arranged on the mounting seat, the guide rack is arranged in a vertical channel of the mounting seat in a penetrating way, the mounting seat can move up and down along the guide rack, a first perforation and a second perforation are arranged on the left side of the mounting seat, a mounting side plate is fixed on the left side of the mounting seat, a gear and a brake pawl are arranged on the mounting side plate, a short shaft is fixed at the center of the gear and is rotatably arranged on the mounting side plate, the right part of the gear penetrates through the first through hole and then is meshed with the guide rack, the end part of the short shaft is fixed with a handle, the brake claw is hinged on the mounting side plate through a pin shaft, a torsional spring is mounted on the pin shaft and acts on the brake claw, the end part of the brake pawl penetrates through the second through hole and then is pressed against the teeth of the guide rack under the action of the torsion spring.
The channel of length pole right-hand member struts the piece including strutting the arm, struts the arm left end and installs the right-hand member at length pole, and the tip demountable installation who struts the arm has the semicircle pipe of strutting, struts the semicircle pipe and sets up along the fore-and-aft direction, and the lamp source through-hole has been seted up to the preceding terminal surface of strutting the semicircle pipe.
The left end of the propping arm is rotatably installed at the right end of the length rod through a rotating shaft, the upper part of the left end of the propping arm is fixed with a front side plate, the upper part of the right end of the length rod is fixed with a rear side plate, the front side plate is positioned right ahead the rear side plate, an angle adjusting bolt is in threaded connection with the front side plate, and the end part of the angle adjusting bolt is in jacking contact with the rear side plate.
The left side of the front end part of the expansion semicircular pipe is provided with a connecting block, the left side part of the connecting block is of a plate-shaped structure, the left side part of the connecting block and the right end part of the expansion arm form a spigot structure, the right end part of the expansion arm is in threaded connection with a fixing bolt, the left side part of the connecting block is provided with a clamping groove, the left side part of the connecting block and the right end part of the expansion arm pass through the fixing bolt for fixed connection, and the fixing bolt passes through the clamping groove.
The front end left side of strutting the semicircle pipe is fixed with the degree of depth and adjusts the pole, and the rear end of degree of depth regulation pole and the front end left side fixed connection who struts the semicircle pipe, the guide chute has been seted up to the right side portion of connecting block, and the degree of depth regulation pole setting just can follow the fore-and-aft direction and slide in the guide chute, installs the locating part on the connecting block, and the locating part is used for restricting the degree of depth to adjust the pole and slides in the guide chute.
The section of the guide sliding chute is T-shaped, the left part of the depth adjusting rod is matched with the guide sliding chute, the left part of the depth adjusting rod is slidably arranged in the guide sliding chute, and the left side surface of the depth adjusting rod is provided with a row of ratchets;
set up the open logical groove in right side in the connecting block, the locating part is including setting up at the contrary post and the compression spring that ends that lead to the inslot, and the right-hand member top pressure that ends the post is the wedge structure contrary, under compression spring's effect, and the right-hand member top pressure that ends the post is on the left side ratchet of degree of depth adjustment pole, and the slot hole has been seted up to the front surface of connecting block, wears to be equipped with the action column in the slot hole, and the action column penetrates logical inslot and ends a fixed connection, and the end fixing of action column has the block.
The depth adjusting rod is composed of a plurality of rod body parts, a threaded hole is formed in the end part of each rod body part, a stud is fixed to the other end part of each rod body part, all the rod body parts are connected in sequence, and the stud at the end part of each rod body part is in threaded connection with the threaded hole at the end part of the other rod body part.
By adopting the technical scheme, the invention has the following beneficial effects: the invention completes the multi-directional adjustment of the two groups of the strutting semicircular tubes through the components such as the length rod, the angle adjusting bolt, the depth adjusting rod and the like, and finally completes the establishment of a proper operation channel; the invention has simple structure and convenient use, does not influence the operation and can quickly establish a stable operation channel.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the mounting base;
FIG. 3 is a schematic view of the connection of the distracting semi-circular tube and the connecting block;
FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;
FIG. 5 is a schematic view of the installation of the limiting member;
fig. 6 is a schematic structural view of the lever body portion.
Detailed Description
As shown in fig. 1-6, the channel spreader special for minimally invasive transforaminal lumbar interbody fusion comprises an installation rod 1, wherein two sets of pedicle screw sleeve fixing components are installed on the installation rod 1;
the upper end of installation pole 1 is fixed with horizontal installation cover 2, 2 interpolations in the installation cover are equipped with length pole 3, length pole 3 level sets up right, threaded connection has first roof pressure bolt 4 on the installation cover 2, the inner of first roof pressure bolt 4 and the cooperation of 3 roof pressures of length pole, length pole 3 can be followed and control the direction and slide in installation cover 2, adjust integrated device's length, and fixed through first roof pressure bolt 4, the below of length pole 3 is provided with mount pad 5, be provided with distraction degree adjustment mechanism between mount pad 5 and the length pole 3, distraction degree adjustment mechanism is used for adjusting the distance between mount pad 5 and the length pole 3, the right side of mount pad 5 and the right-hand member of length pole 3 all are provided with the passageway and strut the piece, two sets of passageways strut a mirror image setting.
The pedicle screw sleeve fixing component comprises a movable sleeve 6, the movable sleeve 6 is sleeved on the mounting rod 1 and can slide up and down along the mounting rod 1, a second jacking bolt 7 is connected to the movable sleeve 6 in a threaded manner, the inner end of the second jacking bolt 7 is in jacking fit with the mounting rod 1, and a fixed sleeve 9 is hinged to the movable sleeve 6 through a ball hinge 8; the two fixing sleeves 9 are respectively used for fixing two surgical instrument pedicle screw sleeves, and the pedicle screw sleeves can slide up and down along the mounting rod 1 and are fixed through the second jacking bolt 7.
The invention further improves, the expansion degree adjusting mechanism comprises a guide rack 10, the guide rack 10 is arranged along the vertical direction, the upper end of the guide rack 10 is fixed on the bottom surface of the length rod 3, a vertical channel is arranged on the installation seat 5, the guide rack 10 is arranged in the vertical channel of the installation seat 5 in a penetrating way, the installation seat 5 can move up and down along the guide rack 10, the left side of the installation seat 5 is provided with a first through hole 11 and a second through hole 12, the left side of the installation seat 5 is fixedly provided with an installation side plate 13, the installation side plate 13 is provided with a gear 14 and a braking claw 16, a short shaft 15 is fixed at the center of the gear 14, the short shaft 15 is rotatably arranged on the installation side plate 13, the right part of the gear 14 passes through the first through hole 11 and is meshed with the guide rack 10, the end part of the short shaft 15 is fixedly provided with a handle 17, the braking claw 16 is hinged on the installation side plate 13 through a pin shaft 18, and a torsion spring 19 is arranged on the pin 18, the torsion spring 19 acts on the locking pawl 16, and under the action of the torsion spring 19, the end of the locking pawl 16 passes through the second through hole 12 and then presses against the teeth of the guide rack 10. When the device is used, the gear 14 is driven to rotate through the rotating handle 17, so that the mounting seat 5 is driven to move along the guide rack 10, the aim of accurately adjusting the opening angle between the vertebral bodies is achieved, meanwhile, the mounting seat 5 is limited to move along the guide rack 10 under the action of the torsion spring 19 by the braking claw 16, during specific operation, the braking claw 16 is pressed downwards, and after the jacking action of the end part of the braking claw 16 on the teeth of the guide rack 10 is relieved, the mounting seat 5 can be quickly operated to move on the guide rack 10;
the channel of 3 right-hand members in length pole struts piece is including strutting arm 20, struts the right-hand member at length pole 3 of the 20 left ends in arm, struts the tip demountable installation of arm 20 and struts semicircle pipe 21, struts semicircle pipe 21 and sets up along the fore-and-aft direction, struts the preceding terminal surface of semicircle pipe 21 and has seted up lamp source through-hole 22, and lamp source through-hole 22 is used for mending the lamp source, throws light on strutting the inside of semicircle pipe 21.
The invention is further improved, the left end of the opening arm 20 is rotatably mounted at the right end of the length rod 3 through a rotating shaft 23, the upper part of the left end of the opening arm 20 is fixed with a front side plate 24, the upper part of the right end of the length rod 3 is fixed with a rear side plate, the front side plate 24 is positioned right in front of the rear side plate (the rear side plate is shielded by the front side plate 24, so that the figure is not shown), the front side plate 24 is in threaded connection with an angle adjusting bolt 25, and the end part of the angle adjusting bolt 25 is in abutting contact with the rear side plate; through rotation angle adjusting bolt 25 during the use, because angle adjusting bolt 25's tip and posterior lateral plate roof pressure contact, angle adjusting bolt 25 rotates the back and removes along length direction, and the posterior lateral plate plays limiting displacement to make angle adjusting bolt 25 and preceding curb plate 24 remove jointly, drive to strut arm 20 and rotate certain angle around axle 23, and then drive the right side strut semicircle pipe 21 and rotate certain angle, reach the purpose that struts semicircle pipe 21 and strut angle modulation.
The invention further improves the structure, the left side of the front end part of the expanding semicircular tube 21 is provided with a connecting block 26, the left side part of the connecting block 26 is of a plate-shaped structure, the left side part of the connecting block 26 and the right end part of the expanding arm 20 form a spigot structure 27, the right end part of the expanding arm 20 is in threaded connection with a fixing bolt 28, the left side part of the connecting block 26 is provided with a clamping groove, the left side part of the connecting block 26 and the right end part of the expanding arm 20 are fixedly connected through the fixing bolt 28, the fixing bolt 28 penetrates through the clamping groove 29, and the above is a mode that the expanding semicircular tube 21 is detachably mounted at the right end part of the expanding arm 20 through the connecting block 26, and the detachable mode can rapidly detach and organize the expanding semicircular tube 21.
The invention further improves, a depth adjusting rod 30 is fixed on the left side of the front end part of the expanding semicircular tube 21, the rear end of the depth adjusting rod 30 is fixedly connected with the left side of the front end of the expanding semicircular tube 21, a guide sliding groove is formed in the right side part of the connecting block 26, the depth adjusting rod 30 is arranged in the guide sliding groove and can slide along the front-back direction, a limiting piece is arranged on the connecting block 26, and the limiting piece is used for limiting the depth adjusting rod 30 to slide in the guide sliding groove. According to the operation condition, the insertion depth of the expansion semicircular tube 21 can be changed by adjusting the position of the depth adjusting rod 30 in the guide sliding chute;
the invention is further improved, the section of the guide sliding chute is T-shaped, the left part of the depth adjusting rod 30 is matched with the guide sliding chute, the left part of the depth adjusting rod 30 is slidably arranged in the guide sliding chute, and the left side surface of the depth adjusting rod 30 is provided with a row of ratchets 31;
open logical groove 32 in right side has been seted up in connecting block 26, the locating part is including setting up contrary post 33 and the compression spring 34 that ends in leading to groove 32, the right-hand member top pressure that ends contrary post 33 is the wedge structure, under compression spring 34's effect, the right-hand member top pressure that ends contrary post 33 is on the left side ratchet 31 of degree of depth adjustment pole 30, slot hole 35 has been seted up to connecting block 26's front surface, wear to be equipped with operation post 36 in the slot hole 35, operation post 36 penetrates in leading to groove 32 with contrary post 33 fixed connection that ends, the end fixing of operation post 36 has block 37. When the depth adjusting rod 30 is used, an operator can push the depth adjusting rod 30 backwards, the reverse stop column 33 does not limit the depth adjusting rod 30 to push backwards, when pushing is stopped, the right end of the reverse stop column 33 is pressed against the left ratchet 31 of the depth adjusting rod 30 under the action of the compression spring 34 to position the depth adjusting rod 30, when the depth adjusting rod 30 needs to be pulled forwards, the cap 37 is shifted leftwards, the cap 37 drives the reverse stop column 33 to move leftwards through the operation column 36, so that the limit of the reverse stop column 33 on the depth adjusting rod 30 is removed, and the depth adjusting rod 30 can be pulled forwards;
the invention further improves, the depth adjusting rod 30 is composed of a plurality of rod body parts 38, the end of the rod body part 38 is provided with a threaded hole 39, the other end of the rod body part 38 is fixed with a stud 40, all the rod body parts 38 are connected in sequence, and the stud 40 at the end of the rod body part 38 is in threaded connection with the threaded hole 39 at the end of the other rod body part 38; the depth adjusting rod 30 is formed in a split mode, after the semicircular tube 21 is adjusted to be unfolded, the overlong depth adjusting rod 30 influences the operation, and at the moment, the redundant rod body part 38 can be screwed off in a screwing mode, so that the overall length of the depth adjusting rod 30 is shortened, and the operation is facilitated.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (9)
1. The channel spreader special for minimally invasive transforaminal lumbar interbody fusion is characterized in that: the pedicle screw sleeve fixing device comprises a mounting rod, wherein two groups of pedicle screw sleeve fixing components are mounted on the mounting rod;
the upper end of installation pole is fixed with horizontal installation cover, the installation cover interpolation is equipped with the length pole, the length pole level sets up right, threaded connection has first roof pressure bolt on the installation cover, the inner and the length pole top press fit of first roof pressure bolt, the below of length pole is provided with the mount pad, be provided with distraction degree adjustment mechanism between mount pad and the length pole, distraction degree adjustment mechanism is used for adjusting the distance between mount pad and the length pole, the right side of mount pad and the right-hand member of length pole all are provided with the passageway and strut the piece, two sets of passageways strut a mirror image setting.
2. The special channel spreader for minimally invasive transforaminal lumbar interbody fusion as claimed in claim 1, wherein: the pedicle screw sleeve fixing assembly comprises a movable sleeve, the movable sleeve is sleeved on the installation rod and can slide up and down along the installation rod, a second jacking bolt is connected onto the movable sleeve in a threaded mode, the inner end of the second jacking bolt is in press fit with the top of the installation rod, and the movable sleeve is hinged to a fixing sleeve through a ball hinge.
3. The special channel spreader for minimally invasive transforaminal lumbar interbody fusion as claimed in claim 1, wherein: the opening degree adjusting mechanism comprises a guide rack which is arranged along the vertical direction, the upper end of the guide rack is fixed on the bottom surface of the length rod, a vertical channel is arranged on the mounting seat, the guide rack is arranged in a vertical channel of the mounting seat in a penetrating way, the mounting seat can move up and down along the guide rack, a first perforation and a second perforation are arranged on the left side of the mounting seat, a mounting side plate is fixed on the left side of the mounting seat, a gear and a brake pawl are arranged on the mounting side plate, a short shaft is fixed at the center of the gear and is rotatably arranged on the mounting side plate, the right part of the gear penetrates through the first through hole and then is meshed with the guide rack, the end part of the short shaft is fixed with a handle, the brake claw is hinged on the mounting side plate through a pin shaft, a torsional spring is mounted on the pin shaft and acts on the brake claw, the end part of the brake pawl penetrates through the second through hole and then is pressed against the teeth of the guide rack under the action of the torsion spring.
4. The special channel spreader for minimally invasive transforaminal lumbar interbody fusion as claimed in claim 1, wherein: the channel of length pole right-hand member struts the piece including strutting the arm, struts the arm left end and installs the right-hand member at length pole, and the tip demountable installation who struts the arm has the semicircle pipe of strutting, struts the semicircle pipe and sets up along the fore-and-aft direction, and the lamp source through-hole has been seted up to the preceding terminal surface of strutting the semicircle pipe.
5. The special channel spreader for minimally invasive transforaminal lumbar interbody fusion as claimed in claim 4, wherein: the left end of the propping arm is rotatably installed at the right end of the length rod through a rotating shaft, the upper part of the left end of the propping arm is fixed with a front side plate, the upper part of the right end of the length rod is fixed with a rear side plate, the front side plate is positioned right ahead the rear side plate, an angle adjusting bolt is in threaded connection with the front side plate, and the end part of the angle adjusting bolt is in jacking contact with the rear side plate.
6. The special channel spreader for minimally invasive transforaminal lumbar interbody fusion as claimed in claim 4, wherein: the left side of the front end part of the expansion semicircular pipe is provided with a connecting block, the left side part of the connecting block is of a plate-shaped structure, the left side part of the connecting block and the right end part of the expansion arm form a spigot structure, the right end part of the expansion arm is in threaded connection with a fixing bolt, the left side part of the connecting block is provided with a clamping groove, the left side part of the connecting block and the right end part of the expansion arm pass through the fixing bolt for fixed connection, and the fixing bolt passes through the clamping groove.
7. The special channel distractor for minimally invasive transforaminal lumbar interbody fusion as claimed in claim 6, wherein: the front end left side of strutting the semicircle pipe is fixed with the degree of depth and adjusts the pole, and the rear end of degree of depth regulation pole and the front end left side fixed connection who struts the semicircle pipe, the guide chute has been seted up to the right side portion of connecting block, and the degree of depth regulation pole setting just can follow the fore-and-aft direction and slide in the guide chute, installs the locating part on the connecting block, and the locating part is used for restricting the degree of depth to adjust the pole and slides in the guide chute.
8. The special channel distractor for minimally invasive transforaminal lumbar interbody fusion as claimed in claim 7, wherein: the section of the guide sliding chute is T-shaped, the left part of the depth adjusting rod is matched with the guide sliding chute, the left part of the depth adjusting rod is slidably arranged in the guide sliding chute, and the left side surface of the depth adjusting rod is provided with a row of ratchets;
set up the open logical groove in right side in the connecting block, the locating part is including setting up at the contrary post and the compression spring that ends that lead to the inslot, and the right-hand member top pressure that ends the post is the wedge structure contrary, under compression spring's effect, and the right-hand member top pressure that ends the post is on the left side ratchet of degree of depth adjustment pole, and the slot hole has been seted up to the front surface of connecting block, wears to be equipped with the action column in the slot hole, and the action column penetrates logical inslot and ends a fixed connection, and the end fixing of action column has the block.
9. The special channel distractor for minimally invasive transforaminal lumbar interbody fusion as claimed in claim 8, wherein: the depth adjusting rod is composed of a plurality of rod body parts, a threaded hole is formed in the end part of each rod body part, a stud is fixed to the other end part of each rod body part, all the rod body parts are connected in sequence, and the stud at the end part of each rod body part is in threaded connection with the threaded hole at the end part of the other rod body part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120637127.XU CN214857020U (en) | 2021-03-30 | 2021-03-30 | Special channel spreader for minimally invasive transforaminal lumbar interbody fusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120637127.XU CN214857020U (en) | 2021-03-30 | 2021-03-30 | Special channel spreader for minimally invasive transforaminal lumbar interbody fusion |
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| Publication Number | Publication Date |
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| CN214857020U true CN214857020U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120637127.XU Active CN214857020U (en) | 2021-03-30 | 2021-03-30 | Special channel spreader for minimally invasive transforaminal lumbar interbody fusion |
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| CN (1) | CN214857020U (en) |
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2021
- 2021-03-30 CN CN202120637127.XU patent/CN214857020U/en active Active
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