A kind of bone channel obturatorTechnical field
The present invention relates to the field of medical instrument technology, predominantly establish bone caused by the removal lesion tissue of channel through boneThe prosthetic device in channel, specifically a kind of bone channel obturator.
Background technique
Cervical Disk Herniation is clinically relatively conventional one of spinal disease, and morbidity is only second to protrusion of lumber intervertebral disc.It is mainIf due to cervical intervertebral disk nucleus pulposus, fibrous ring, cartilage plate, especially nucleus pulposus, after different degrees of retrogression pathological changes occur, outsideUnder the action of boundary's factor, annulus fibrosus disci intervertebralis is caused to rupture, nucleus pulposus is prominent from rupture place or deviates from intraspinal tube, to makeCause headache, dizziness such as spinal nerve root and compression of spinal cord at adjacent tissue；It is palpitaition, uncomfortable in chest；Neck acid is swollen, limitation of activity；Shoulder back pain, upper limb numbness distending pain；The sings and symptoms such as gait unstability, weakness of limbs occur high paraplegia and jeopardize when seriousLife.
For herniation of cervical disc, therapeutic modality is broadly divided into conservative therapy and operative treatment, and conservative therapy includesDrug, physical therapy etc. have certain effect to the state of an illness is alleviated.But when conservative therapy is invalid, when especially the state of an illness is heavier, operation is controlledIt treats and often can get satisfactory effect；Preceding road is treatment central type and other central herniation of cervical intervertebral disc through the full endoscopic technic of centrumA kind of modus operandi, the structural schematic diagram for preceding road through the full endoscopic technic of centrum as shown in Fig. 10, surgical procedure are as follows: withPreceding road minimal invasion mode establishes bone channel to prominent nucleus pulposus position adjacent to centrum drilling from pathological interspinal disk, and placement operation is logicalRoad connects surgical endoscope, in direct view under endoscope using the disc tissue at nucleus pulposus clamp cleaning vertebral bone channel rear, extracts outstandingNucleus pulposus disc tissue.The art formula forms vertebral bone channel after centrum drills, this is to the postoperative centrum mechanical strength of patient and steadyIt is qualitative to generate a degree of influence, have patient be filled with into vertebral bone channel tricalcium phosphate supporter and autologous spongiosa bone intoRow support is repaired.
Tricalcium phosphate supporter is applied in a kind of Intrapyramidal eyelid retractor, is as shown in Fig. 11 tricalcium phosphate supporterStructural schematic diagram, in use, be implanted into vertebral bone channel as branch erect support firm effect, autologous spongiosa can be insertedBone promotes knitting, but tricalcium phosphate supporter volume is larger and size is fixed, and can not be implanted into vertebra by scope invasive mannerBody bone channel is the structural schematic diagram that tricalcium phosphate and autologous spongiosa bone have been implanted into centrum channel as shown in Fig. 12.
The bone channel prosthetic device that therefore, it is necessary to use a kind of structure simple, easy for operation, highly-safe, withMeet the requirement in medical Minimally Invasive Surgery, and surgical procedure can be simplified and improve operative effect.
Summary of the invention
The technical problem to be solved by the present invention is to be directed to background technique, it is simple to provide a kind of structure, behaviourFacilitate, can through minimally invasive channel be implanted into, it is controllable, sustainable, can bone grafting, highly-safe bone channel prosthetic device, with meetRequirement in medical Minimally Invasive Surgery can simplify surgical procedure and improve operative effect, and specifically a kind of bone channel is repairedDevice.
In order to solve the above technical problems, the technical scheme adopted by the invention is as follows: a kind of bone channel obturator includesHeart screw rod, push plate, sliding shoe, nut and connection component, the center bolt is rod structure, in one end of the center boltEquipped with the screw thread to match with the nut, the other end is equipped with end socket, sets on the center bolt between the screw thread and end socketHave center pillar, be equipped with multiple groups equally distributed first rivet hole annular in shape in the inside of the end socket, be equipped on the center pillar withThe second rivet hole that first rivet hole matches, is equipped with circular hole in the sliding shoe, and the sliding shoe passes through circular hole setIn the center bolt, it is equipped with what multiple groups matched with the first rivet hole and the second rivet hole in the inside of the sliding shoeThird rivet hole, the push plate are equipped with multiple, and quantity is identical as first rivet hole, and is equipped in each push plate moreA push plate rivet hole, is additionally provided with carriage respectively in the push plate, and multiple push plates are annular in shape relative to the center boltBe distributed in its peripheral direction, the connection component by carriage respectively with the first rivet hole, the second rivet hole and third rivetingNail hole connection, the nut is bolted in center bolt by screw thread, and the sliding shoe, can be in described under the action of nutThe axial movement of heart screw rod, is moved axially by the sliding shoe, drives the push plate centered on center bolt by connection componentIt struts or inwardly closes up outward.
Further, using a kind of bone channel obturator of the present invention, wherein first rivet hole is equipped with three groups,Three group of first rivet hole is annularly uniformly distributed in the inside of the end socket, and three groups and the first rivet hole are equipped on the center pillarThe second rivet hole to match, the structure wherein center bolt, screw thread, end socket and center pillar are one of the forming, in the slidingThe inside of block is equipped with three groups of third rivet holes to match with the first rivet hole and the second rivet hole, there are three the push plate is set,And push plate rivet hole there are three being all provided in each push plate, three push plates are relative to the upper left of the center bolt, upper right, downsideThree directions are annularly distributed in its peripheral direction, the connection component by carriage respectively with the first rivet hole, secondRivet hole is connected with third rivet hole, and the nut is bolted in center bolt by screw thread, work of the sliding shoe in nutUnder, can axially move along the center bolt, be moved axially by the sliding shoe, by connection component drive the push plate withIt struts centered on center bolt or inwardly closes up outward.
Further, using a kind of bone channel obturator of the present invention, wherein the carriage is to be respectively setMultiple support slippers composition in each push plate medial surface, and be equipped with and the connection component phase in the support slipperThe multiple push plate rivet holes matched, it is free to slide for the connection component.
Further, using a kind of bone channel obturator of the present invention, wherein there are two the support slipper sets, twoA support slipper is arranged in parallel along the length direction of the push plate, and a push plate rivet is equipped in a wherein support slipperHole is set in another support slipper there are two push plate rivet hole, and three push plate rivet holes are extended through along longitudinal direction in describedIn support slipper.
Further, using a kind of bone channel obturator of the present invention, wherein the connection component includes left rivetingNail, intermediate rivet, left rocking bar, intermediate rocker, right rocking bar, push plate rivet and sliding shoe rivet, the left rivet, intermediate rivet,There are three left rocking bar, intermediate rocker, right rocking bar and sliding shoe rivet are all provided with, the push plate rivet is equipped with nine, each describedPush plate rivet there are three being all connected in push plate；Wherein the left rocking bar, intermediate rocker, right rocking bar are that structure is identical, are distributed in instituteIt states in push plate medial surface, and is respectively equipped with a rivet hole at the left rocking bar, intermediate rocker and right rocking bar both ends；Described threeLeft rivet, three intermediate rivets and three sliding shoe rivets are respectively arranged at corresponding first rivet hole, the second rivet hole and theIn three rivet holes；Nine push plate rivets are respectively arranged in nine push plate rivet holes corresponding in corresponding push plate；InstituteLeft rocking bar is stated by one end with a rivet hole and left rivet interlacement, the intermediate rocker is by with rivet holeOne end and intermediate rivet interlacement, the right rocking bar pass through one end with a rivet hole and sliding shoe rivet interlacement；The left sideThe other end of rocking bar is connect with the push plate rivet hole in the support slipper for being equipped with a push plate rivet hole；The intermediate rocker and the right sideThe other end of rocking bar is connect with the push plate rivet hole set in support slipper there are two push plate rivet hole respectively according to order；It is describedArm is constituted by the corresponding rocking bar of rivet interlacement between center bolt, push plate and connection component, is formed centered on center bolt,Three layers of linkage structure that upper left, upper right and the direction of downside three strut or close up are constituted in the periphery of center bolt.
Further, using a kind of bone channel obturator of the present invention, wherein the lateral surface in the sliding shoe is setThere are two baltimore groove, set in the nut there are two the limit card block extended to sliding Block direction, the limit card block with it is recessedShape slot matches, and the nut is inserted into or is detached from the baltimore groove by the limit card block, realizes the nut and cunningBeing fixedly connected between motion block or discrete state.
Further, using a kind of bone channel obturator of the present invention, wherein being equipped in multiple in the push plateEmpty bone uptake hole increases contact area by the bone uptake hole so that bone-grafting material filling is grown into bone tissue, promoteesInto symphysis.
Further, using a kind of bone channel obturator of the present invention, wherein the bone uptake hole is set as three,Three bone uptake pore size distributions are set as strip through-hole structure in the middle part and both ends of the push plate, the bone uptake hole.
Further, using a kind of bone channel obturator of the present invention, wherein the center bolt, push plate, slidingMedical titanium alloy or vitallium material can be selected in block, nut and connection component or other materials constitutes the bone channel and repairsDevice, bone channel obturator using when can impregnate or inject bone morphogenetic protein, stem cell or promote bone grafting growCell factor.
Further, using a kind of bone channel obturator of the present invention, wherein on the inside edge of the center boltIts end socket direction is equipped with the axially extending bore being axially arranged along it, by the axially extending bore into center bolt bone grafting, describedThe side of center bolt is additionally provided with multiple increasing hoppers communicated with the axially extending bore.
Using a kind of bone channel obturator of the present invention, compared with prior art, the beneficial effect is that: it is logical firstAbundant preoperative evaluation to be crossed, surgical contraindication is excluded, the size and required bone channel obturator model in centrum channel are established in assessment,In surgical procedure, preceding road minimal invasion mode establishes centrum channel through centrum and takes out cervical intervertebral disk nucleus pulposus outstanding, logical in centrumRoad is implanted into not distracted bone channel obturator, reaches in centrum channel behind appropriate location, then make bone channel by rotating nutsObturator struts, so that bone channel obturator comes into full contact with centrum channel edge bone tissue, can repair in bone channel after struttingBone grafting is carried out in device realizes bone channel obturator and the permanent knitting of centrum.It is embodied in the following aspects:
1, bone channel of the present invention obturator is implanted by minimally invasive channel, it is suitable to select according to bone channel drilling situation in artBone channel obturator model, minimal invasion implant surgery bone channel, operation wound is small, post-operative recovery small to Gu Pang disorganizationFastly；
2, it can uniformly be strutted behind bone channel of the present invention obturator implantation bone channel, increase bone channel obturator surface and bone is logicalThe contact surface of road inner bone tissues, provides a supporting role for centrum；
3, bone channel of the present invention obturator use screw thread Principles of Regulation, transport screw process realize to the periphery from upper left,Upper right, the direction push plate of downside three strut, and reverse acting spiral process is realized and inwardly collapsed, and have adjusting easy to operate, structure is simple；
4, bone channel of the present invention obturator uniformly struts after suitable position in implantation bone channel, can in center bolt andBone grafting is carried out between push plate, is in close contact with bone channel inner bone tissues by bone uptake hole between push plate, realizes that operation bone channel is normalForm healing；
5, bone channel of the present invention obturator selects medical titanium alloy or vitallium material or other materials to be made, can be realExisting bone channel inner support, bone grafting, provide immediate postoperative stability, create with the permanent knitting in operation bone channel and long-time stabilityMake condition.
In conclusion can realize and beat in very small space using a kind of bone channel obturator of the present inventionThe different function opened and collapsed, bone channel obturator have it is compact-sized, can satisfy and wanted in medical Minimally Invasive SurgeryIt asks, working efficiency can be greatly improved, be suitable for promoting and applying.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is Structure explosion diagram of the invention；
Fig. 2 is the center bolt structural schematic diagram in Fig. 1；
Fig. 3 is the plate pushing structure schematic diagram in Fig. 1；
Fig. 4 is left rocking bar, intermediate rocker and the right rocker structure schematic diagram in Fig. 1；
Fig. 5 is the sliding shoe structural schematic diagram in Fig. 1；
Fig. 6 is the nut structure diagram in Fig. 1；
Fig. 7 is the state diagram in bone channel obturator use process of the present invention when closing up；
Fig. 8 is state diagram when strutting in bone channel obturator use process of the present invention；
Fig. 9 is flow diagram when bone channel of the present invention obturator uses；
Figure 10 be the road background technique Zhong Qian through centrum entirely in mirror structural schematic diagram；
Figure 11 is the structural schematic diagram of tricalcium phosphate supporter in background technique；
Figure 12 is the flow diagram that tricalcium phosphate and autologous spongiosa bone are implanted into background technique.
It is as shown in the figure: 1- center bolt, 101- screw thread, 102- end socket, the first rivet hole of 103-, 104- center pillar, 105-Two rivet holes, 106- increase hopper, the left rivet of 2-, rivet among 3-, the left rocking bar of 4-, 5- intermediate rocker, the right rocking bar of 6-, 7- push plate,701- support slipper, 702- push plate rivet hole, 703- bone uptake hole, 8- push plate rivet, 9- sliding shoe rivet, 10- sliding shoe,1001- circular hole, 1002- third rivet hole, 1003- baltimore groove, 11- nut, 1101- limit card block, 12- rivet hole.
Specific embodiment
As shown in Figures 1 to 6, a kind of bone channel obturator of the present invention includes center bolt 1, push plate 7, slidesMotion block 10, nut 11 and connection component, the center bolt 1 are rod structure, are equipped with and institute in one end of the center bolt 1The screw thread 101 that nut 11 matches is stated, the other end is equipped with end socket 102, the center spiral shell between the screw thread 101 and end socket 102Bar 1 is equipped with center pillar 104, is equipped with multiple groups equally distributed first rivet hole 103 annular in shape in the inside of the end socket 102,The center pillar 104 is equipped with the second rivet hole 105 to match with first rivet hole 103, sets in the sliding shoe 10There is circular hole 1001, the sliding shoe 10 is sheathed in the center bolt 1 by circular hole 1001, in the inside of the sliding shoe 10Equipped with the third rivet hole 1002 that multiple groups and the first rivet hole 103 and the second rivet hole 105 match, the push plate 7 is equipped with moreA, quantity is identical as first rivet hole 103, and multiple push plate rivet holes 702 are equipped in each push plate 7, in instituteIt states and is additionally provided with carriage in push plate 7 respectively, multiple push plates 7 are annularly distributed in its periphery side relative to the center bolt 1To, the connection component by carriage respectively with the first rivet hole 103, the second rivet hole 105 and third rivet hole 1002Connection, the nut 11 are bolted in center bolt 1 by screw thread 101, and the sliding shoe 10, can edge under the action of nut 11The center bolt 1 moves axially, and is moved axially by the sliding shoe 10, drives the push plate 7 with center by connection componentIt struts centered on screw rod 1 or inwardly closes up outward.
Further, using a kind of bone channel obturator of the present invention, wherein first rivet hole 103 is equipped with threeGroup, three group of first rivet hole 103 are annularly uniformly distributed in the inside of the end socket 102, and three groups are equipped on the center pillar 104The second rivet hole 105 to match with the first rivet hole 103, wherein the center bolt 1, screw thread 101, end socket 102 and center pillar104 are one of the forming structure, are equipped with three groups and the first rivet hole 103 and the second rivet hole 105 in the inside of the sliding shoe 10The third rivet hole 1002 to match there are three the push plate 7 is set, and is all provided in each push plate 7 that there are three push plate rivet holes702, three push plates 7 are annularly distributed in its periphery side relative to the upper left of the center bolt 1, upper right, the direction of downside threeTo, the connection component by carriage respectively with the first rivet hole 103, the second rivet hole 105 and third rivet hole 1002Connection, the nut 11 are bolted in center bolt 1 by screw thread 101, and the sliding shoe 10, can edge under the action of nut 11The center bolt 1 moves axially, and is moved axially by the sliding shoe 10, drives the push plate 7 with center by connection componentIt struts centered on screw rod 1 or inwardly closes up outward.
Further, using a kind of bone channel obturator of the present invention, wherein the carriage is to be respectively setMultiple support slippers 701 in each 7 medial surface of push plate form, and are equipped with and the connection in the support slipper 701Multiple push plate rivet holes 702 that component matches, it is free to slide for the connection component.
Further, using a kind of bone channel obturator of the present invention, wherein the support slipper 701 is equipped with twoA, two support slippers 701 are arranged in parallel along the length direction of the push plate 7, and one is equipped in a wherein support slipper 701A push plate rivet hole 702, sets that there are two push plate rivet hole 702, three push plate rivet holes in another support slipper 701702 extend through along longitudinal direction in the support slipper 701.
Further, using a kind of bone channel obturator of the present invention, wherein the connection component includes left rivetingNail 2, intermediate rivet 3, left rocking bar 4, intermediate rocker 5, right rocking bar 6, push plate rivet 8 and sliding shoe rivet 9, the left rivet 2, inBetween there are three rivet 3, left rocking bar 4, intermediate rocker 5, right rocking bar 6 and sliding shoe rivet 9 be all provided with, the push plate rivet 8 is equipped with nineIt is a, it is all connected in each push plate 7 there are three push plate rivet 8；Wherein the left rocking bar 4, intermediate rocker 5, right rocking bar 6 areStructure is identical, is distributed in 7 medial surface of push plate, and sets respectively at the left rocking bar 4, intermediate rocker 5 and 6 both ends of right rocking barThere is a rivet hole 12；Three left rivets, 2, three intermediate rivets 3 and three sliding shoe rivets 9 are respectively arranged at accordinglyIn first rivet hole 103, the second rivet hole 105 and third rivet hole 1002；Nine push plate rivets 8 are respectively arranged at accordinglyPush plate 7 in corresponding nine push plate rivet holes 702；The left rocking bar 4 by with a rivet hole 12 one end withLeft rivet 2 connects, and the intermediate rocker 5 is connect by one end with a rivet hole 12 with intermediate rivet 3, the right rocking bar6 are connect by one end with a rivet hole 12 with sliding shoe rivet 9；The other end of the left rocking bar 4 is pushed away with equipped with onePush plate rivet hole 702 in the support slipper 701 of plate rivet hole 702 connects；The other end of the intermediate rocker 5 and right rocking bar 6It is connect respectively with the push plate rivet hole 702 set in support slipper 701 there are two push plate rivet hole 702 according to order；In describedArm is constituted by the corresponding rocking bar of rivet interlacement between heart screw rod 1, push plate 7 and connection component, is formed with center bolt 1 and isThe heart constitutes three layers of linkage structure that upper left, upper right and the direction of downside three strut or close up in the periphery of center bolt 1.
Further, using a kind of bone channel obturator of the present invention, wherein in the lateral surface of the sliding shoe 10If setting that there are two the limit card block 1101 extended to 10 direction of sliding shoe, institutes in the nut 11 there are two baltimore groove 1003It states limit card block 1101 to match with baltimore groove 1003, the nut 11 is inserted into or is detached from institute by the limit card block 1101It states in baltimore groove 1003, realizes being fixedly connected between the nut 11 and sliding shoe 10 or discrete state.
Further, using a kind of bone channel obturator of the present invention, wherein being equipped in multiple in the push plate 7Empty bone uptake hole 703 increases contact by the bone uptake hole 703 so that bone-grafting material filling is grown into bone tissueArea promotes symphysis.
Further, using a kind of bone channel obturator of the present invention, wherein the bone uptake hole 703 is set as threeA, three bone uptake holes 703 are distributed in the middle part and both ends of the push plate 7, and the bone uptake hole 703 is set as strip through-holeStructure.
Further, using a kind of bone channel obturator of the present invention, wherein the center bolt 1, push plate 7, cunningMedical titanium alloy or vitallium material can be selected in motion block 10, nut 11 and connection component or other materials constitutes the bone and leads toRoad obturator, bone channel obturator using when can impregnate or inject bone morphogenetic protein, stem cell or promote bone graftingThe cell factor of growth.
Further, using a kind of bone channel obturator of the present invention, wherein on the inside edge of the center bolt 1Its 102 direction of end socket is equipped with the axially extending bore being axially arranged along it, by the axially extending bore into center bolt 1 bone grafting,The side of the center bolt 1 is additionally provided with multiple increasing hoppers 106 communicated with the axially extending bore.
As shown in Figure 7 and Figure 8, in actual application, using a kind of bone channel obturator of the present invention, firstBy abundant preoperative evaluation, surgical contraindication is excluded, the size and required bone channel obturator model in centrum channel are established in assessment,In the course of surgery, preceding road establishes centrum channel through centrum and takes out cervical intervertebral disk nucleus pulposus outstanding, is implanted into not in centrum channelDistracted bone channel obturator reaches in centrum channel behind appropriate location, then strut bone channel obturator by rotating nuts,So that bone channel obturator comes into full contact with centrum channel edge bone tissue, can be planted in the obturator of bone channel after struttingBone.(do not have in figure due to being equipped in the inside of the center bolt 1 along its 102 direction of end socket along the axially extending bore that it is axially arrangedHave mark), by the axially extending bore into center bolt 1 bone grafting, be additionally provided with multiple and institute in the side of the center bolt 1State the increasing hopper 106 that axially extending bore communicates, by the axially extending bore into center bolt 1 bone grafting, due to the increasing hopper 106Communicated with the bone uptake hole 703 in the push plate 7, the bone grafting injected can by bone uptake hole 703 to surrounding exudation come,Increase with the contact of channel table facial bone tissue, bone tissue can be grown into bracket, to realize bone channel obturator and vertebraThe permanent bone fusion of body.
Using bone channel of the present invention obturator, concrete operating principle are as follows: in opening procedure, such as Fig. 7 and Fig. 8Shown in middle arrow direction, rotating nut 11 is first passed through, so that the opposite center bolt 1 of the nut 11 is made rotating motion, due inThe screw thread 101 to match with nut 11 is equipped in heart screw rod 1, in the effect of screw thread 101, nut 11 drives sliding shoe 10 at centerIt is slided on screw rod 1, due to being all provided in each 7 medial surface of push plate there are two support slipper 701, two support slippers 701 are along instituteThe length direction for stating push plate 7 is arranged in parallel, and a push plate rivet hole 702 is equipped in a wherein support slipper 701, anotherIt is set in support slipper 701 there are two push plate rivet hole 702, three push plate rivet holes 702 are extended through along longitudinal direction in describedIn support slipper 701.In addition, due to the connection component include left rivet 2, intermediate rivet 3, left rocking bar 4, intermediate rocker 5,Right rocking bar 6, push plate rivet 8 and sliding shoe rivet 9, the left rivet 2, intermediate rivet 3, left rocking bar 4, intermediate rocker 5, right rocking bar6 and there are three sliding shoe rivet 9 is all provided with, the push plate rivet 8 is equipped with nine, be all connected in each push plate 7 there are threePush plate rivet 8；Wherein the left rocking bar 4, intermediate rocker 5, right rocking bar 6 are that structure is identical, are distributed in 7 medial surface of push plateIn, and a rivet hole 12 is respectively equipped at the left rocking bar 4, intermediate rocker 5 and 6 both ends of right rocking bar；Three left rivets2, three intermediate rivets 3 and three sliding shoe rivets 9 are respectively arranged at corresponding first rivet hole 103,105 and of the second rivet holeIn third rivet hole 1002；Nine push plate rivets 8 are respectively arranged at two support slippers 701 described in corresponding push plate 7In nine corresponding push plate rivet holes 702；The left rocking bar 4 is connected by one end with a rivet hole 12 with left rivet 2It connects, the intermediate rocker 5 is connect by one end with a rivet hole 12 with intermediate rivet 3, and the right rocking bar 6 is by havingOne end of one rivet hole 12 is connect with sliding shoe rivet 9；The other end of the left rocking bar 4 be equipped with a push plate rivet holePush plate rivet hole 702 in 702 support slipper 701 connects；The other end of the intermediate rocker 5 and right rocking bar 6 is according to orderIt is connect respectively with the push plate rivet hole 702 set in support slipper 701 there are two push plate rivet hole 702；The center bolt 1,Arm is constituted by the corresponding rocking bar of rivet interlacement between push plate 7 and connection component, is thus held accordingly by connection componentPush plate 7 moves out, so that push plate 7 is opened, is formed centered on center bolt 1, constitutes in the periphery of center bolt 1 leftThree layers of linkage structure that upper, upper right and the direction of downside three strut or close up.
And recycle movement with open movement on the contrary, by reversion nut 11, due to set on nut 11 there are two and spillSlot 1003 matches limit card block 1101, sliding shoe 10 can be pulled back by limit card block 1101 in this way, in connection componentUnder the action of, so that left rocking bar 4, intermediate rocker 5 and right rocking bar 6 is distinguished return, pull the corresponding inwardly movement of push plate 7, using pushing awayPlate 7 closes up in the periphery of center bolt 1.
As shown in figure 9, in the specific application process, in the centrum channel that preceding road is established through centrum discectomiesIt is implanted into bone channel of the present invention obturator, to maintain in the form of centrum, mechanical strength and stability.It first has to through abundant artPreceding assessment, excludes surgical contraindication, and the size and required bone channel obturator model in centrum channel are established in assessment；In surgical procedureIn, former road minimal invasion mode establishes bone channel to prominent nucleus pulposus position adjacent to centrum drilling from pathological interspinal disk, places behaviourMake channel, connect surgical endoscope, in direct view under endoscope using the disc tissue at nucleus pulposus clamp cleaning bone channel rear, extracts outstandingNucleus pulposus disc tissue.Finally in the not distracted bone channel obturator of the centrum channel implantation present invention, it is appropriate in centrum channel to reachBehind position, then by rotating nuts strut bone channel obturator, so that bone channel obturator and centrum channel edge bone tissueIt is sufficiently in close contact, then imports bone grafting pipe again, Bone Defect Repari material is implanted into the bone channel obturator after strutting by bone grafting pipeMaterial, to realize bone channel obturator and the permanent knitting of centrum.
In conclusion being realized in very small space using bone channel of the present invention obturator and opening and collapseFunction, the bone channel obturator have it is compact-sized, can satisfy the requirement in medical Minimally Invasive Surgery, work can be greatly improvedMake efficiency, is suitable for promoting and applying.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this fieldFor art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repairChange, equivalent replacement, improvement etc., should all include within protection scope of the present invention.