CN209269990U - A kind of bone channel obturator - Google Patents

Abstract

The utility model discloses a kind of bone channel obturators, it include center bolt, push plate, sliding shoe, nut and connection component, the center bolt is rod structure, screw thread is equipped in one end of center bolt, the other end is equipped with end socket, center pillar is equipped on center bolt, the first rivet hole is equipped in the inside of end socket, the second rivet hole is equipped on center pillar, third rivet hole is equipped in the inside of sliding shoe, push plate is equipped with multiple, multiple push plates are annularly distributed in its peripheral direction relative to center bolt, connection component is by carriage respectively with first, second connects with third rivet hole, nut is bolted in center bolt by screw thread, sliding shoe is under the action of nut, it can axially be moved along center bolt, it is moved axially by sliding shoe, the push plate is driven to strut centered on center bolt or inwardly close outward by connection component Hold together.Using obturator described in the utility model, have compact-sized, Minimally Invasive Surgery requirement can be met, improve working efficiency, is suitable for promoting and application.

Description

A kind of bone channel obturator

Technical field

The utility model relates to the field of medical instrument technology, predominantly establish caused by the removal lesion tissue of channel through bone Bone channel prosthetic device, 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 main If due to cervical intervertebral disk nucleus pulposus, fibrous ring, cartilage plate, especially nucleus pulposus, after different degrees of retrogression pathological changes occur, outside Under 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 make Cause 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 serious Life.

For herniation of cervical disc, therapeutic modality is broadly divided into conservative therapy and operative treatment, and conservative therapy includes Drug, 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 controlled It 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 centrum A 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: with Preceding road minimal invasion mode establishes bone channel to prominent nucleus pulposus position adjacent to centrum drilling from pathological interspinal disk, and placement operation is logical Road connects surgical endoscope, in direct view under endoscope using the disc tissue at nucleus pulposus clamp cleaning vertebral bone channel rear, extracts outstanding Nucleus pulposus disc tissue.The art formula forms vertebral bone channel after centrum drills, this is to the postoperative centrum mechanical strength of patient and steady It is qualitative to generate a degree of influence, have patient be filled with into vertebral bone channel tricalcium phosphate supporter and autologous spongiosa bone into Row support is repaired.

Tricalcium phosphate supporter is applied in a kind of Intrapyramidal eyelid retractor, is as shown in Fig. 11 tricalcium phosphate supporter Structural schematic diagram, in use, be implanted into vertebral bone channel as branch erect support firm effect, autologous spongiosa can be inserted Bone promotes knitting, but tricalcium phosphate supporter volume is larger and size is fixed, and can not be implanted into vertebra by scope invasive manner Body 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, with Meet the requirement in medical Minimally Invasive Surgery, and surgical procedure can be simplified and improve operative effect.

Utility model content

The problem of the technical problems to be solved in the utility model is for background technique provides a kind of structure letter It is single, it is easy to operate, can be implanted into through minimally invasive channel, is controllable, sustainable, can bone grafting, highly-safe bone channel prosthetic device, with Meet the requirement in medical Minimally Invasive Surgery, surgical procedure can be simplified and improves operative effect, specifically a kind of bone channel Obturator.

In order to solve the above technical problems, the technology employed by the present utility model is a kind of bone channel obturator, including There are center bolt, push plate, sliding shoe, nut and connection component, the center bolt is rod structure, in the center bolt One end is equipped with the screw thread to match with the nut, and the other end is equipped with end socket, the center bolt between the screw thread and end socket It is equipped with center pillar, multiple groups equally distributed first rivet hole annular in shape is equipped in the inside of the end socket, is set on the center pillar There is the second rivet hole to match with first rivet hole, circular hole is equipped in the sliding shoe, the sliding shoe passes through circle Hole is sheathed in the center bolt, is equipped with multiple groups and the first rivet hole and the second rivet hole phase in the inside of the sliding shoe The third rivet hole matched, the push plate be equipped with it is multiple, quantity is identical as first rivet hole, and is all provided in each push plate There are multiple push plate rivet holes, be additionally provided with carriage respectively in the push plate, multiple push plates are in relative to the center bolt Annular distribution in its peripheral direction, the connection component by carriage respectively with the first rivet hole, the second rivet hole and the The connection of three rivet holes, the nut are bolted in center bolt by screw thread, and the sliding shoe, can be along institute under the action of nut It is axially mobile to state center bolt, is moved axially by the sliding shoe, drives the push plate to be with center bolt by connection component Center struts outward or inwardly closes up.

Further, using a kind of bone channel obturator described in the utility model, 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 first are equipped on the center pillar The second rivet hole that rivet hole matches, the structure wherein center bolt, screw thread, end socket and center pillar are one of the forming, in institute The inside for stating sliding shoe is equipped with three groups of third rivet holes to match with the first rivet hole and the second rivet hole, and the push plate is equipped with Three, and it is all provided in each push plate that there are three push plate rivet hole, upper left, the right side of three push plates relative to the center bolt The upper and lower direction of side three is annularly distributed in its peripheral direction, the connection component by carriage respectively with the first rivet Hole, the second rivet hole are connected with third rivet hole, and the nut is bolted in center bolt by screw thread, and the sliding shoe is in spiral shell Under the action of mother, can axially move along the center bolt, be moved axially by the sliding shoe, driven as connection component described in Push plate is strutted outward centered on center bolt or is inwardly closed up.

Further, using a kind of bone channel obturator described in the utility model, wherein the carriage is difference The multiple support slippers composition being set in each push plate medial surface, and be equipped with and the connection component in the support slipper The multiple push plate rivet holes to match, it is free to slide for the connection component.

Further, using a kind of bone channel obturator described in the utility model, wherein the support slipper is equipped with two A, two support slippers are arranged in parallel along the length direction of the push plate, and a push plate is equipped in a wherein support slipper Rivet hole is set in another support slipper there are two push plate rivet hole, three push plate rivet holes extend through along longitudinal direction in In the support slipper.

Further, using a kind of bone channel obturator described in the utility model, wherein the connection component includes Left rivet, intermediate rivet, left rocking bar, intermediate rocker, right rocking bar, push plate rivet and sliding shoe rivet, the left rivet, intermediate riveting There are three nail, left rocking bar, intermediate rocker, right rocking bar and sliding shoe rivet are all provided with, the push plate rivet is equipped with nine, in each institute State push 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 In the push plate medial surface, and a rivet hole is respectively equipped at the left rocking bar, intermediate rocker and right rocking bar both ends；Described three A left rivet, three intermediate rivets and three sliding shoe rivets be respectively arranged at corresponding first rivet hole, the second rivet hole and In third rivet hole；Nine push plate rivets are respectively arranged in nine push plate rivet holes corresponding in corresponding push plate； The left rocking bar is passed through by the one end and left rivet interlacement, the intermediate rocker for having a rivet hole with a rivet hole One end and intermediate rivet interlacement, the right rocking bar pass through one end with a rivet hole and sliding shoe rivet interlacement；It is described The other end of left 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 other end of right 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；Institute It states and arm is constituted by the corresponding rocking bar of rivet interlacement between center bolt, push plate and connection component, formed with center bolt and be The 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.

Further, using a kind of bone channel obturator described in the utility model, wherein in the outside of the sliding shoe Face is set sets that there are two the limit card block extended to sliding Block direction, the limit card blocks there are two baltimore groove in the nut Match with baltimore groove, the nut is inserted into or is detached from the baltimore groove by the limit card block, realizes the nut Being fixedly connected between sliding shoe or discrete state.

Further, using a kind of bone channel obturator described in the utility model, wherein being equipped in the push plate more A hollow bone uptake hole increases contact surface by the bone uptake hole so that bone-grafting material filling is grown into bone tissue Product promotes symphysis.

Further, using a kind of bone channel obturator described in the utility model, 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 described in the utility model, wherein the center bolt, push plate, Medical titanium alloy or vitallium material can be selected in sliding shoe, nut and connection component or other materials constitutes the bone channel Obturator, bone channel obturator using when can impregnate or inject bone morphogenetic protein, stem cell or promote bone grafting raw Long cell factor.

Further, using a kind of bone channel obturator described in the utility model, wherein in the center bolt Portion is equipped with the axially extending bore being axially arranged along it along its end socket direction, by the axially extending bore into center bolt bone grafting, The side of the center bolt is additionally provided with multiple increasing hoppers communicated with the axially extending bore.

Using a kind of bone channel obturator described in the utility model, compared with prior art, the beneficial effect is that: it is first Abundant preoperative evaluation is first passed through, excludes surgical contraindication, the size in centrum channel is established in assessment and type is repaired in required bone channel Number, in the course of surgery, preceding road minimal invasion mode establishes centrum channel through centrum and takes out cervical intervertebral disk nucleus pulposus outstanding, in vertebra Body channel is implanted into not distracted bone channel obturator, reaches in centrum channel behind appropriate location, then make bone by rotating nuts Channel obturator struts, so that bone channel obturator comes into full contact with centrum channel edge bone tissue, it can be in bone channel after strutting Bone grafting is carried out in obturator realizes bone channel obturator and the permanent knitting of centrum.It is embodied in following side Face:

1, bone channel described in the utility model obturator is implanted by minimally invasive channel, is selected according to bone channel drilling situation in art Suitable bone channel obturator model is selected, minimal invasion implant surgery bone channel, operation wound is small, and it is small to Gu Pang disorganization, Post-operative recovery is fast；

2, it can uniformly be strutted behind bone channel described in the utility model obturator implantation bone channel, increase bone channel obturator table The contact surface in face and bone channel inner bone tissues, provides a supporting role for centrum；

3, bone channel described in the utility model obturator uses screw thread Principles of Regulation, realizes to the periphery in transport screw process It is strutted from upper left, upper right, the direction push plate of downside three, reverse acting spiral process is realized and inwardly collapsed, and is had and is adjusted easy to operate, knot Structure is simple；

4, bone channel described in the utility model obturator uniformly struts after suitable position in implantation bone channel, can be at center Bone grafting is carried out in screw rod and between push plate, is in close contact with bone channel inner bone tissues by bone uptake hole between push plate, realizes operation bone The healing of channel normal morphology；

5, bone channel described in the utility model obturator selects medical titanium alloy or vitallium material or other materials It is made, it can be achieved that bone channel inner support, bone grafting, provide immediate postoperative stability, with the permanent knitting in operation bone channel and length Phase stability creates conditions.

In conclusion using a kind of bone channel obturator described in the utility model, it can be real in very small space Now open and collapse different function, bone channel obturator have it is compact-sized, can satisfy in medical Minimally Invasive Surgery Requirement, working efficiency can be greatly improved, be suitable for promote and application.

Detailed description of the invention

The utility model is described in further detail with reference to the accompanying drawing.

Fig. 1 is the Structure explosion diagram of the utility model；

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 described in the utility model when closing up；

Fig. 8 is state diagram when strutting in bone channel obturator use process described in the utility model；

Fig. 9 is flow diagram when bone channel described in the utility model 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 described in the utility model, includes center bolt 1, push plate 7, sliding shoe 10, nut 11 and connection component, the center bolt 1 are rod structure, are equipped in one end of the center bolt 1 The screw thread 101 to match with the nut 11, the other end be equipped with end socket 102, between the screw thread 101 and end socket 102 in Heart screw rod 1 is equipped with center pillar 104, is equipped with multiple groups equally distributed first rivet hole annular in shape in the inside of the end socket 102 103, the second rivet hole 105 to match with first rivet hole 103 is equipped on the center pillar 104, in the sliding shoe Circular hole 1001 is equipped in 10, the sliding shoe 10 is sheathed in the center bolt 1 by circular hole 1001, in the sliding shoe 10 Inside be equipped 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 Equipped with multiple, quantity is identical as first rivet hole 103, and multiple push plate rivet holes are equipped in each push plate 7 702, it is additionally provided with carriage respectively in the push plate 7, multiple push plates 7 are annularly distributed in relative to the center bolt 1 Its peripheral direction, the connection component by carriage respectively with the first rivet hole 103, the second rivet hole 105 and third riveting Nail hole 1002 connects, and the nut 11 is bolted in center bolt 1 by screw thread 101, work of the sliding shoe 10 in nut 11 Under, can be moved axially along the center bolt 1, by the sliding shoe 10 move axially, as connection component drive described in push away Plate 7 is strutted outward centered on center bolt 1 or is inwardly closed up.

Further, using a kind of bone channel obturator described in the utility model, wherein first rivet hole 103 is set There are three groups, three group of first rivet hole 103 is annularly uniformly distributed in the inside of the end socket 102, is equipped on the center pillar 104 Three groups of second rivet holes 105 to match with the first rivet hole 103, wherein the center bolt 1, screw thread 101,102 and of end socket Center pillar 104 is one of the forming structure, is equipped with three groups and the first rivet hole 103 and the second rivet hole in the inside of the sliding shoe 10 The 105 third rivet holes 1002 to match there are three the push plate 7 is set, and are all provided in each push plate 7 that there are three push plate rivets Hole 702, three push plates 7 are annularly distributed in its periphery relative to the upper left of the center bolt 1, upper right, the direction of downside three Direction, the connection component by carriage respectively with the first rivet hole 103, the second rivet hole 105 and third rivet hole 1002 connections, the nut 11 are bolted in center bolt 1 by screw thread 101, the sliding shoe 10 under the action of nut 11, Can be moved axially along the center bolt 1, by the sliding shoe 10 move axially, by connection component drive the push plate 7 with It struts centered on center bolt 1 or inwardly closes up outward.

Further, using a kind of bone channel obturator described in the utility model, wherein the carriage is difference Multiple support slippers 701 in each 7 medial surface of push plate are set to form, and be equipped in the support slipper 701 with it is described Multiple push plate rivet holes 702 that connection component matches, it is free to slide for the connection component.

Further, using a kind of bone channel obturator described in the utility model, wherein the support slipper 701 is equipped with Two, two support slippers 701 are arranged in parallel along the length direction of the push plate 7, are equipped in a wherein support slipper 701 One push plate rivet hole 702, sets that there are two push plate rivet hole 702, three push plate rivet holes in another support slipper 701 702 extend through along longitudinal direction in the support slipper 701.

Further, using a kind of bone channel obturator described in the utility model, wherein the connection component includes 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, there are three intermediate rivet 3, left rocking bar 4, intermediate rocker 5, right rocking bar 6 and sliding shoe rivet 9 are all provided with, the push plate rivet 8 is set There are nine, is all connected in each push plate 7 there are three push plate rivet 8；Wherein the left rocking bar 4, intermediate rocker 5, the right side are shaken Bar 6 is that structure is identical, is distributed in 7 medial surface of push plate, and in the left rocking bar 4,6 both ends of intermediate rocker 5 and right rocking bar It is respectively equipped with a rivet hole 12；Three left rivets, 2, three intermediate rivets 3 and three sliding shoe rivets 9 are respectively arranged at In corresponding first rivet hole 103, the second rivet hole 105 and third rivet hole 1002；Nine push plate rivets 8 are respectively set In corresponding push plate 7 in nine corresponding push plate rivet holes 702；The left rocking bar 4 is by having a rivet hole 12 One end is connect with left rivet 2, and the intermediate rocker 5 is connect by one end with a rivet hole 12 with intermediate rivet 3, described Right rocking bar 6 is connect by one end with a rivet hole 12 with sliding shoe rivet 9；The other end of the left rocking bar 4 be equipped with Push plate rivet hole 702 in the support slipper 701 of one push plate rivet hole 702 connects；The intermediate rocker 5 and right rocking bar 6 The other end is connect with the push plate rivet hole 702 set in support slipper 701 there are two push plate rivet hole 702 respectively according to order； Arm is constituted by the corresponding rocking bar of rivet interlacement between the center bolt 1, push plate 7 and connection component, is formed with center bolt 1 Centered on, 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 1.

Further, using a kind of bone channel obturator described in the utility model, wherein in the outer of the sliding shoe 10 Side is set sets that there are two the limit card blocks extended to 10 direction of sliding shoe there are two baltimore groove 1003 in the nut 11 1101, the limit card block 1101 matches with baltimore groove 1003, the nut 11 be inserted by the limit card block 1101 or Person is detached from the 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 described in the utility model, wherein being equipped in the push plate 7 more A hollow bone uptake hole 703 increases by the bone uptake hole 703 so that bone-grafting material filling is grown into bone tissue Contact area promotes symphysis.

Further, using a kind of bone channel obturator described in the utility model, wherein the bone uptake hole 703 is arranged It is three, 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-hole structure.

Further, using a kind of bone channel obturator described in the utility model, wherein the center bolt 1, push plate 7, sliding shoe 10, nut 11 and connection component can be selected described in medical titanium alloy or vitallium material or other materials composition Bone channel obturator, bone channel obturator using when can impregnate or inject bone morphogenetic protein, stem cell or promotion The cell factor of bone grafting growth.

Further, using a kind of bone channel obturator described in the utility model, wherein in the center bolt 1 Portion is equipped with the axially extending bore being axially arranged along it along its 102 direction of end socket, by the axially extending bore to 1 interplantation of center bolt Bone is additionally provided with multiple increasing hoppers 106 communicated with the axially extending bore in the side of the center bolt 1.

As shown in Figure 7 and Figure 8, in actual application, using a kind of bone channel obturator described in the utility model, First by abundant preoperative evaluation, surgical contraindication is excluded, the size and required bone channel obturator in centrum channel are established in assessment Model, in the course of surgery, preceding road establish centrum channel through centrum and take out cervical intervertebral disk nucleus pulposus outstanding, in the interplantation of centrum channel Enter not distracted bone channel obturator, reaches in centrum channel behind appropriate location, then make bone channel obturator by rotating nuts Strut so that bone channel obturator comes into full contact with centrum channel edge bone tissue, after strutting can in the obturator of bone channel into Row bone grafting.Due to being equipped with the axially extending bore (figure being axially arranged along it along its 102 direction of end socket in the inside of the center bolt 1 In do not mark), by the axially extending bore into center bolt 1 bone grafting, be additionally provided in the side of the center bolt 1 multiple The increasing hopper 106 communicated with the axially extending bore, by the axially extending bore into center bolt 1 bone grafting, due to the increasing expect Slot 106 is communicated with the bone uptake hole 703 in the push plate 7, and the bone grafting injected can be seeped by bone uptake hole 703 to surrounding Out, increase with the contact of channel table facial bone tissue, bone tissue can be grown into bracket, to realize bone channel obturator With the permanent bone fusion of centrum.

Using bone channel described in the utility model obturator, concrete operating principle are as follows: in opening procedure, such as Fig. 7 With rotating nut 11 shown in arrow direction, is first passed through in Fig. 8, so that the opposite center bolt 1 of the nut 11 is made rotating motion, due to The screw thread 101 to match with nut 11 is equipped in center bolt 1, in the effect of screw thread 101, nut 11 drives sliding shoe 10 to exist It is slided on center bolt 1, due to being all provided in each 7 medial surface of push plate, there are two support slipper 701, two support slippers 701 Length direction along the push plate 7 is arranged in parallel, and a push plate rivet hole 702 is equipped in a wherein support slipper 701, separately Set in one support slipper 701 there are two push plate rivet hole 702, three push plate rivet holes 702 extend through along longitudinal direction in In the support slipper 701.In addition, since the connection component includes that left rivet 2, intermediate rivet 3, left rocking bar 4, centre are shaken Bar 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, the right side There are three rocking bar 6 and sliding shoe rivet 9 are all provided with, the push plate rivet 8 is equipped with nine, is respectively connected in each push plate 7 Three push plate rivets 8；Wherein the left rocking bar 4, intermediate rocker 5, right rocking bar 6 are that structure is identical, are distributed in 7 inside of push plate In face, 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 rivetings 2, three intermediate rivets 3 of nail and three sliding shoe rivets 9 are respectively arranged at corresponding first rivet hole 103, the second rivet hole 105 In third rivet hole 1002；Nine push plate rivets 8 are respectively arranged at two support slippers described in corresponding push plate 7 In nine push plate rivet holes 702 corresponding to 701；The left rocking bar 4 by with a rivet hole 12 one end and left rivet 2 Connection, the intermediate rocker 5 are connect by one end with a rivet hole 12 with intermediate rivet 3, and the right rocking bar 6 passes through band There is one end of a rivet hole 12 to connect with sliding shoe rivet 9；The other end of the left rocking bar 4 be equipped with a push plate rivet hole Push 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 order It 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 component Push 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 left Three 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 spill Slot 1003 matches limit card block 1101, sliding shoe 10 can be pulled back by limit card block 1101 in this way, in connection component Under 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 away Plate 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 discectomies It is implanted into bone channel described in the utility model obturator, to maintain in the form of centrum, mechanical strength and stability.It first has to by filling Divide preoperative evaluation, exclude surgical contraindication, the size and required bone channel obturator model in centrum channel are established in assessment；It is performing the operation In the process, former road minimal invasion mode establishes bone channel to prominent nucleus pulposus position adjacent to centrum drilling from pathological interspinal disk, puts Operating walk way is set, surgical endoscope is connected, in direct view under endoscope using the disc tissue at nucleus pulposus clamp cleaning bone channel rear, is extractd prominent Nucleus pulposus disc tissue out.It finally is implanted into the not distracted bone channel obturator of the utility model in centrum channel, it is logical to reach centrum In road behind appropriate location, then by rotating nuts strut bone channel obturator, so that bone channel obturator and centrum channel side Edge bone tissue is sufficiently in close contact, and then imports bone grafting pipe again, is implanted by bone grafting pipe to the bone channel obturator after strutting Bone renovating material, to realize bone channel obturator and the permanent knitting of centrum.

In conclusion using bone channel described in the utility model obturator, realized in very small space open and The function of gathering, the bone channel obturator have it is compact-sized, can satisfy the requirement in medical Minimally Invasive Surgery, can greatly mention High working efficiency is suitable for promoting and applying.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should all include being within the protection scope of the utility model.

Claims (10)

1. a kind of bone channel obturator, it is characterised in that: include center bolt (1), push plate (7), sliding shoe (10), nut (11) and connection component, the center bolt (1) are rod structure, are equipped with and the spiral shell in one end of the center bolt (1) The screw thread (101) that female (11) match, the other end is equipped with end socket (102), between the screw thread (101) and end socket (102) Center bolt (1) is equipped with center pillar (104), is equipped with multiple groups annular in shape equally distributed first in the inside of the end socket (102) Rivet hole (103) is equipped with the second rivet hole to match with first rivet hole (103) on the center pillar (104) (105), circular hole (1001) are equipped in the sliding shoe (10), the sliding shoe (10) is sheathed on described by circular hole (1001) In center bolt (1), multiple groups and the first rivet hole (103) and the second rivet hole are equipped in the inside of the sliding shoe (10) (105) the third rivet hole (1002) to match, the push plate (7) are equipped with multiple, quantity and first rivet hole (103) It is identical, and multiple push plate rivet holes (702) are equipped on each push plate (7), it is additionally provided with sliding respectively in the push plate (7) Device, multiple push plates (7) are annularly distributed in its peripheral direction relative to the center bolt (1), and the connection component passes through Carriage is connect with the first rivet hole (103), the second rivet hole (105) and third rivet hole (1002) respectively, the nut (11) it is bolted in center bolt (1) by screw thread (101), the sliding shoe (10), can be along institute under the action of nut (11) State center bolt (1) axial movement, by the sliding shoe (10) move axially, by connection component drive the push plate (7) with It struts centered on center bolt (1) or inwardly closes up outward.

2. a kind of bone channel obturator according to claim 1, it is characterised in that: first rivet hole (103) is equipped with Three groups, three group of first rivet hole (103) is annularly uniformly distributed in the inside of the end socket (102), on the center pillar (104) The second rivet hole (105) to match equipped with three groups with the first rivet hole (103), wherein the center bolt (1), screw thread (101), end socket (102) and center pillar (104) are one of the forming structure, are equipped with three groups and first in the inside of the sliding shoe (10) The third rivet hole (1002) that rivet hole (103) and the second rivet hole (105) match, there are three the push plate (7) sets, and There are three being all provided on each push plate (7) push plate rivet hole (702), a left side of three push plates (7) relative to the center bolt (1) Upper, upper right, the direction of downside three are annularly distributed in its peripheral direction, and the connection component is by carriage respectively with first Rivet hole (103), the second rivet hole (105) and third rivet hole (1002) connection, the nut (11) pass through screw thread (101) spiral shell It is connected in center bolt (1), the sliding shoe (10) can axially move under the action of nut (11) along the center bolt (1) It is dynamic, moved axially by the sliding shoe (10), from connection component drive the push plate (7) centered on center bolt (1) to It struts or inwardly closes up outside.

3. a kind of bone channel obturator according to claim 1 or 2, it is characterised in that: the carriage is to set respectively Be placed in each push plate (7) medial surface multiple support slippers (701) composition, and in the support slipper (701) be equipped with Multiple push plate rivet holes (702) that the connection component matches are free to slide for the connection component.

4. a kind of bone channel obturator according to claim 3, it is characterised in that: the support slipper (701) is equipped with two A, two support slippers (701) are arranged in parallel along the length direction of the push plate (7), wherein in a support slipper (701) Equipped with a push plate rivet hole (702), set in another support slipper (701) there are two push plate rivet hole (702), described three Push plate rivet hole (702) is extended through along longitudinal direction in the support slipper (701).

5. a kind of bone channel obturator according to claim 4, it is characterised in that: the connection component includes 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), institute Left rivet (2), intermediate rivet (3), left rocking bar (4), intermediate rocker (5), right rocking bar (6) and sliding shoe rivet (9) is stated to be equipped with Three, the push plate rivet (8) is equipped with nine, 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) they are that structure is identical, are distributed in the push plate (7) medial surface, and The left rocking bar (4), intermediate rocker (5) and right rocking bar (6) both ends are respectively equipped with a rivet hole (12)；Three left rivets (2), three intermediate rivets (3) and three sliding shoe rivets (9) are respectively arranged at corresponding first rivet hole (103), the second riveting In nail hole (105) and third rivet hole (1002)；Nine push plate rivets (8) are respectively arranged at institute in corresponding push plate (7) In corresponding nine push plate rivet holes (702)；The left rocking bar (4) by with a rivet hole (12) one end and left rivet (2) it connects, the intermediate rocker (5) is connect by one end with a rivet hole (12) with intermediate rivet (3), and the right side is shaken Bar (6) is connect by one end with a rivet hole (12) with sliding shoe rivet (9)；The other end of the left rocking bar (4) with Push plate rivet hole (702) connection in support slipper (701) equipped with a push plate rivet hole (702)；The intermediate rocker (5) With the other end of right rocking bar (6) according to order respectively with set pushing away in support slipper (701) there are two push plate rivet hole (702) Plate rivet hole (702) connection；Pass through the corresponding rocking bar structure of rivet interlacement between the center bolt (1), push plate (7) and connection component It at arm, is formed centered on center bolt (1), constitutes upper left, upper right and the direction of downside three in the periphery of center bolt (1) The three layers of linkage structure for strutting or closing up.

6. a kind of bone channel obturator according to claim 5, it is characterised in that: the lateral surface in the sliding shoe (10) If setting that there are two the limit card blocks extended to sliding shoe (10) direction in the nut (11) there are two baltimore groove (1003) (1101), the limit card block (1101) matches with baltimore groove (1003), and the nut (11) passes through the limit card block (1101) it is inserted into or is detached from the baltimore groove (1003), realize the fixed company between the nut (11) and sliding shoe (10) It connects or discrete state.

7. a kind of bone channel obturator according to claim 1 or 2, it is characterised in that: be equipped in the push plate (7) more A hollow bone uptake hole (703), by the bone uptake hole (703) so that bone-grafting material filling is grown into bone tissue, Increase contact area, promotes symphysis.

8. a kind of bone channel obturator according to claim 7, it is characterised in that: the bone uptake hole (703) is set as Three, 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 item Configured bore therethrough structure.

9. a kind of bone channel obturator according to claim 1, it is characterised in that: the center bolt (1), push plate (7), Medical titanium alloy or vitallium material can be selected in sliding shoe (10), nut (11) and connection component or other materials constitutes institute State bone channel obturator, bone channel obturator using when can impregnate or inject bone morphogenetic protein, stem cell or rush The cell factor grown into bone grafting.

10. a kind of bone channel obturator according to claim 1, it is characterised in that: in the inside of the center bolt (1) The axially extending bore being axially arranged along it is equipped with along its end socket (102) direction, by the axially extending bore to center bolt (1) interplantation Bone is additionally provided with multiple increasing hoppers (106) communicated with the axially extending bore in the side of the center bolt (1).