CN207012235U - A kind of pedicle of vertebral arch fixed system installation tool - Google Patents

Abstract

It the utility model is related to a kind of pedicle of vertebral arch fixed system installation tool, including central tube, lifting component and handle.Lifting component is set on central tube and can moved up and down relative to central tube along central tube axis direction by its lifting sleeve, and is stopped by the check device of lifting component when it is moved down；Check device also has the function of releasing non-return manually；The central tube using when can be arranged on by its lower end part press-down type on pitman and in the circumferential mutually it is spacing.The lifting sleeve, which is provided with when using, can carry out spacing to each afterbody for strutting piece and make to strut piece afterbody and close up.The handle using when be fixedly installed on the upper end of central tube.Operating personnel hold can be effectively and directly to by being rotatablely connected rod by pedicle of vertebral arch fixed cell rotational positioning to required position when handle rotates, namely pedicle screw is caused to be rotated to position, operating procedure is enormously simplify, a series of problems of pedicle of vertebral arch fixed system installation can be efficiently solved.

Description

A kind of pedicle of vertebral arch fixed system installation tool

Technical field

Technical field of medical instruments is the utility model is related to, especially a kind of pedicle of vertebral arch fixed system installation tool.

Background technology

Pedicle of vertebral arch fixed system（Fixed system is can be also simply referred to as below）Generally it is made up of multiple pedicle of vertebral arch fixed cells, often Individual pedicle of vertebral arch fixed cell includes pedicle screw, trim ring, bearing, pitman and housing screw.The bottom of bearing is provided with through hole, Bearing also has side leg position, and side leg position is provided with internal thread and has 2 side legs being oppositely arranged, and U is formed between 2 side legs Shape passage.The top of trim ring is provided with U-lag, and trim ring is buckled in the head of pedicle screw by its underpart from top set, and both is tight Contiguity is touched.Pedicle screw is passed through the through hole of bearing bottom by its afterbody from the top down, and its head is limited in the through hole, this When the U-lag of trim ring and the U of bearing set along same direction, and the U-lag of trim ring is located at the U of bearing In.Pitman is engaged with the U of bearing and with the U-lag of trim ring.

When carrying out pedicle screw to screw in the operation of pedicle of vertebral arch, pedicle screw is compressed by trim ring above, And trim ring is compacted screw in compression, so as to complete the operation screwed in pedicle of vertebral arch of pedicle screw.Then then The adjustment of system is fixed., it is necessary to pitman is arranged between 2 adjacent pedicle of vertebral arch fixed cells before adjustment, or It is between 3 adjacent pedicle of vertebral arch fixed cells.Specifically installation method is：After screwing off housing screw, by one of pitman In the U of termination insertion bearing and the U-lag of trim ring, then screw on and screw housing screw, so that will by trim ring The head of underlying pedicle screw is pressed on bearing.The other end of pitman is embedded in into adjacent other pedicles of vertebral arch to consolidate It is fixed in the U of the bearing of order member and in the same way on another bearing, so that adjacent 2 Pedicle of vertebral arch fixed cell is mutually permanently connected.As needed can also be adjacent successively by a pitman and 3 and positioned at one Three pedicle of vertebral arch fixed cells on straight line are connected.Then the adjustment of whole fixed system can be carried out, until adjustment is completed.

Above-mentioned pedicle screw Internal fixation technology is a kind of highly developed spine surgical technique, is widely used in ridge The treatment of the spinal traumas such as spinous process of the seventh cervical vertebra folding, scoliosis and spondylolishesis and degenerative disorders.It is fixed in traditional pedicle screw Technology needs to carry out open posterior approach, although having corrected deformity of spine well, maintains the stability of backbone, by Extensive tissue dissection is needed in surgical procedure and pulls surrounding tissue for a long time, causes operation wound big, intraoperative blood loss is more. Meanwhile to the excessive drawing of paraspinal muscle and destruction in surgical procedure, and make the small of the back muscle ischemic necrosis and fibrosis, so as to lead Causing a disease, people is postoperative to be unable to early ambulation because of chronic low back pain, postoperative to need long-term bed so that complication rate Obvious increase.

Minimally Invasive Surgery can utilize the modern medical equipments such as endoscope, and hand is implemented in human body in less wound environment Art, there is the superiority that wound is small, pain is light, recovery is fast.By combining pedicle screw Internal fixation technology and minimally invasive hand Art, those skilled in the art have developed backbone Percutaneous fixation technology, successfully solve solid in conventional spinal pedicle screw Determine the deficiencies of operative incision in technology is big, muscle stripping is more, bleeding is more, the destruction of way of escape rock-steady structure is big, rehabilitation is slow.But by Need to carry out by Minimally Invasive Surgery in backbone Percutaneous fixation technology, the operating personnel visual field is bad during operation, causes The problems such as operation technique is complicated, and operating time is longer, difficulty is big.

In order to solve the above problems, generate the setting on the bearing of pedicle of vertebral arch fixed system and strut piece to ensure Surgery The whole technology exposed to the visual field in position, struts the use of piece so that operating personnel, can will be in vertebra outside in operation Tissue outwards pushed open by strutting piece, so as to easily be attached the replacing of rod and adjustment etc. of whole fixed system. But it is existing when strutting piece and being fixedly connected with bearing, otherwise needing to use special apparatus to strut piece when fixed is arranged on branch On seat, or being directly plugged on the top of the side leg position of bearing, the former is arranged on branch because that will strut piece using special apparatus It is greatly inconvenient and troublesome in poeration to be brought when on seat to operation, although operative site can be fully exposed to regard by the latter In open country, but directly the situation for strutting piece and being plugged on bearing afterbody is easily come off in surgical procedure, be unfavorable for the suitable of operation Profit is carried out.

Chinese patent literature CN204931830U discloses a kind of pedicle of vertebral arch fixed system, the system " including bearing and support Hacking, bearing afterbody have two symmetrically arranged side legs, strut piece and strut piece main body and connector including integrally formed, even Joint is detachably fixed with side leg and is connected, and the side leg offers a fixing groove, and there is the connector edge to strut leaf length The chute in direction, shape and the side leg shape of the chute match, and have one coordinate with fixing groove, will strut in the chute The projection that piece is fixed with bearing "." when side leg is along during slide, chute can produce Light deformation in the presence of projection, when When side leg slides into extreme position, projection is just fastened in fixing groove, easy for installation, and be effectively prevent and strutted piece from branch Come off on seat ".

But it is above-mentioned with the pedicle of vertebral arch fixed system of piece is strutted when mounted, it will typically strut piece and first be arranged on vertebra On nut bearing, pedicles are arranged in the lump with piece is strutted.If will strut piece simply closes up installation, it is unfavorable for rot Tool is so that pedicle screw to be fixed.Installed again if will first strut piece and strut, because sight is influenceed by piece is strutted, can cause to perform the operation The inaccuracy of otch.If otch is excessive, unnecessary damage is caused to patient；If otch is too small, in installation pedicle screw When, strut sector-meeting and shearing is produced to the tissue of incision periphery.Therefore, the installation with the pedicle of vertebral arch fixed system for strutting piece, according to It is so the huge difficult problem that this area doctor faces.

Utility model content

In order to solve existing above mentioned problem, the utility model provides a kind of pedicle of vertebral arch fixed system installation tool, uses Shi Jineng successfully installs pedicle of vertebral arch fixed system, and and can is effectively avoided strutting interference of the piece to installation process, efficiently solved Band struts the installation question of the pedicle of vertebral arch fixed system of piece.

Technical scheme is used by the utility model solves its technical problem：Pedicle of vertebral arch fixed system of the present utility model With installation tool, including 2 strut piece.It is structurally characterized in that：Also include central tube, lifting component and handle.Lift component bag Include lifting sleeve and check device；Component is lifted during use sleeve is lifted by it and be set on central tube and can be relative to center Pipe moves up and down in the middle and upper part of central tube along central tube axis direction, and is lifting sleeve along central tube axis by check device Stopped when direction moves down；Check device also has the function of releasing non-return manually；The central tube can be by when using Its lower end part press-down type be arranged on the pitman of pedicle of vertebral arch fixed system and in the circumferential mutually it is spacing, and cause central tube Can together it be rotated with pedicle of vertebral arch fixed system；The lifting sleeve is provided with when using can be spacing to each afterbody for strutting piece progress Corresponding limiting section, and each struts the corresponding side that piece can press close to the left and right sides of centrally disposed pipe when in use, respectively The lower end that piece struts piece can be fixedly connected on the position on a corresponding side leg for bearing when being and using.Consolidate during the handle use On the upper end of fixed centrally disposed pipe.When fixing pedicle screw using above-mentioned installation tool of the present utility model, it is propped up The afterbody of blade is collapsed in lifting in component, so as to be advantageous to operating personnel's holding handle or hold handle simultaneously and carry Help pull a cart cylinder and installation tool pushed down into pitman and pedicle of vertebral arch fixed cell is adjusted to suitable location, and more can easily by Pedicle screw is screwed in pedicle of vertebral arch by installation tool, is significantly reduced the working strength of operating personnel, is reduced workload.

The front and rear side plate of the lower end part of the central tube is provided with a pair of arc-shaped slots, namely central tube leads to when in use This is crossed to block pitman to arc-shaped slot and realize and pitman in the circumferential mutual spacing.The handle is quality of rubber materials Knob；Knob tight fit is set on the upper end of central tube during use.Due to setting arc in the lower end of central tube Shape neck and as the operating position to fixed cell, and can be effectively directly to pedicle of vertebral arch be consolidated by being rotatablely connected rod Order member rotational positioning position needed for.Handle is set into globulate simultaneously and uses quality of rubber materials, would be even more beneficial to operation Carry out.

The lifting component includes lifting sleeve and 2 check devices；Every side of side is set central tube before and after top wherein There is a stop part；It is described lifting component using when by its lift sleeve be set on central tube, and lift component use when by It lifts sleeve and moved relative to central tube in the middle and upper part of central tube along central tube axis direction；The left and right of the lifting sleeve Every side of both sides, which is provided with, to carry out spacing limiting section to the corresponding a piece of afterbody for strutting piece；When each check device uses Be arranged on lifting sleeve front and rear side corresponding side on, and can under the collective effect of the corresponding stop part of central tube, When lifting sleeve moves along central tube axis direction, it is prevented to move down.2 check devices are set to be advantageous to increase lifting Stability when sleeve moves relative to central tube.Such setting can be more beneficial for operator in surgical procedure according to need The upper-lower position of regulation lifting sleeve is sought, facilitates operation technique.

On plate body of the stop part of the middle and upper part of the central tube for the front and rear side plate of centrally disposed pipe, positioned at plate body Middle and upper part and towards some non-return teeth in outside；Each check device includes non-return piece, rotating shaft and elastic mechanism；Lifting set The front and rear side of cylinder is respectively provided with a non-return groove portion；Each non-return groove portion of lifting sleeve is provided with corresponding stop-return slot；Rotating shaft is set In a corresponding non-return groove portion for lifting sleeve, non-return piece is enclosed in rotating shaft and in the stop-return slot of the non-return groove portion, The non-return piece lower end has the latch that can be meshed when using with non-return teeth；Elastic mechanism is arranged on non-return piece, or Be arranged on simultaneously in non-return piece and rotating shaft, and elastic mechanism caused when in use by its spring energy the latch of non-return piece with it is corresponding Non-return teeth Elastic Meshing.This set make it that the work of check device is more reliable and easy to operate.

The elastic mechanism is to be arranged on non-return piece and be positioned at the compression spring on non-return piece top, or elastic mechanism The torsion spring being arranged in non-return piece and rotating shaft.This set make it that the work of check device is more reliable and easy to operate.

In each non-return groove portion of described lifting sleeve, a barrier plate for being located at stop-return slot top is equipped with, and should Barrier plate and the top of corresponding non-return piece are corresponding.This set causes the work of check device more reliable and operation letter Just.

Described elastic mechanism is the compression spring being arranged on non-return piece, and the upper end end of non-return piece is spacing provided with one Block.This set is relatively simple and quick when installing check device.

The limiting section of every side of the left and right sides of the lifting sleeve is to be arranged on the 1-2 at left and right sides of lifting sleeve per side Individual positioning convex and the locating groove set around positioning convex.This set is advantageous to strut the fast positioning of piece.

The lifting component also includes outer sleeve；The outer sleeve is provided with 2 action panes；Outer sleeve using when be enclosed on and carry Help pull a cart on cylinder, and each of which action pane is directed at the non-return piece of a corresponding check device, and non-return piece is in its latch and phase In the state of the non-return teeth Elastic Meshing answered, the top of non-return piece is in action pane, so as to which now action pane can be Top progress in circumference to non-return piece is spacing.Outer sleeve is set to be advantageous to carry out spacing, setting to the radial outside for strutting piece Operation window is advantageous to operate check device by the window.

Every side of the left and right sides of the lifting sleeve is equipped with a drawing ear for being located at bottom, and two are drawn ear symmetrically to set Put, and each draw ear to be provided with when using to be easy to the upper and lower hollow passageway run through that the afterbody for strutting piece passes through.Set and draw ear can Operated accordingly with facilitating operating personnel to grip lifting component by hand.

Described 2 strut piece be shape just as integrated through injection molding part or titanium alloy integral piece.The piece that struts includes Strut piece main body, connector, strut piece afterbody（It can be also simply referred to as afterbody）And projection.Connector, strut piece main body and strut piece Afterbody is sequentially connected.Strut piece main body together with strut piece afterbody be in-line tabular.Connector is divided into front limit portion, connection Plate and rear limiting section.The end being symmetricly set on before and after front limit portion and rear limit part on the outside of the direction of the left and right end face of connecting plate The front and rear sides in face, and two chutes being oppositely arranged are formed, chute before being formed wherein between front limit portion and connecting plate, connection Chute after then being formed between plate and rear limiting section.Projection sets and is connected on connecting plate, and is stretched towards the direction of setting chute Go out.In use, each strut piece be connected through the side leg epimere of a head side leg corresponding to the left and right sides leg of bearing according to Removable plug fixed form is fixedly connected.Piece main body will be strutted together with the tabular for strutting piece afterbody and being arranged to in-line, can It is required a certain degree of when strutting piece to facilitate by be oppositely arranged 2 using dilator and strutted, and meeting to strut Elastic deformation.

The above-mentioned piece main body that struts is provided with some positioning holes, and positioning hole is waist round hole, and the long axis direction of waist round hole is with strutting The length direction of piece is consistent.The particular number of positioning hole is 3-6, preferably 4.The design of positioning hole, can effectively it solve Certainly the surgical procedure support hacking location difficulty the problem of；And positioning hole selection waist round hole, position can be strutted strut piece After fixation, the amplitude that struts for strutting piece is finely adjusted by waist round hole, to adapt to the operation of operation, further enhancing and strut The applicability of piece.Two panels struts piece and preferably struts piece using shape and material identical, so as to be more beneficial for the progress of operation.

The beneficial effects of the utility model are：A kind of pedicle of vertebral arch fixed system installation tool provided by the utility model, First the piece that struts of pedicle of vertebral arch fixed system can be closed up using sleeve and lifting component, while central tube and lifting component and company Take over the baton and cooperatively form the installation tool of pedicle of vertebral arch fixed system, pedicle of vertebral arch fixed system can be successfully installed, and can is effectively kept away Open the interference for strutting piece to installation process.Simultaneously during installation operation, operating personnel are set in central tube by tight fit Knob on upper end and by the use of arc-shaped slot is set in the lower end of central tube and as the operating position to fixed cell, Can be effectively and directly to by being rotatablely connected rod by pedicle of vertebral arch fixed cell rotational positioning to required position；Reduce behaviour The workload of author.Handle is set into globulate simultaneously and uses quality of rubber materials, would be even more beneficial to the progress of operation；To sum up set It can effectively solve the problem that band struts the installation question of the pedicle of vertebral arch fixed system of piece.

Brief description of the drawings

Fig. 1 is the schematic diagram that installation tool of the present utility model is used to install pedicle of vertebral arch fixed system.

Fig. 2 is Fig. 1 perspective exploded view.

Fig. 3 is the perspective exploded view of the lifting sleeve and check device in Fig. 2, and view direction revolves relative to Fig. 2 90 degree are turned.

Fig. 4 is the schematic perspective view of central tube in Fig. 2.

Fig. 5 is a piece of schematic perspective view for strutting piece positioned at right side in Fig. 2.

It is mutual that Fig. 6 is that the bearing of the pedicle of vertebral arch fixed system in Fig. 1 with 2 of installation tool of the present utility model struts piece The assembling schematic diagram being used cooperatively.

Reference in above-mentioned accompanying drawing is as follows：

Piece 1 is strutted, struts piece main body 11, connector 12, front limit portion 12-1, connecting plate 12-2, rear limiting section 12-3, support Hacking afterbody 13, projection 14, positioning hole 15, fixing hole 16, chute 17, preceding chute 17-1, rear chute 17-2, bearing 2, side leg 21, side leg epimere 21-1, side leg hypomere 21-2, fixing groove 22, fracture 23, central tube 3, arc-shaped slot 31, non-return teeth 32, Front side board 33, pitman 41, housing screw 42, pedicle screw 43, trim ring 44, sleeve 5 is lifted, draw ear 51, hollow passageway 52, stop-return slot 53, locating groove 54, positioning convex 55, barrier plate 56, shaft hole 57, compression spring hole 58, outer sleeve 6, action pane 61, non-return piece 71, latch 71-1, limited block 71-2, rotating shaft 72, mounting post 73, knob 8.

Embodiment

The utility model is described in further detail below in conjunction with drawings and examples.These accompanying drawings are simplified Schematic diagram, only illustrate basic structure of the present utility model in a schematic way, therefore it only shows the structure relevant with the utility model Into.

（Embodiment 1）

See Fig. 1 and Fig. 2, the pedicle of vertebral arch fixed system of the present embodiment is included with installation tool：Central tube 3, lifting component, ball Shape handle 8 and 2 strut piece 1.

Still see Fig. 1 and Fig. 2, lifting component using when can be set on central tube 3 and can be relative to central tube 3 at center Moved along the axis direction of central tube 3 middle and upper part of pipe 3.The central tube 3 can be arranged on vertebral arch when using by its lower end press-down type It is on the pitman 41 of root fixed system and in the circumferential mutually spacing, and enable central tube 3 with pedicle of vertebral arch fixed system together Rotate.The lifting component is provided with when using can carry out spacing corresponding limiting section to each afterbody for strutting piece 1 13, and respectively Piece struts the corresponding side that piece 1 can press close to the left and right sides of centrally disposed pipe 3 when in use, and each lower end for strutting piece 1 is The position that can be fixedly connected on during use on a corresponding side leg 21 for bearing 2.Knob 8 is the integral piece of quality of rubber materials. Tight fit is set on the upper end of central tube 3 when knob 8 uses.

See Fig. 4, central tube 3 is steel integral piece, provided with lower end part and 2 stop parts.The lower end part it is front and rear Side plate is provided with a pair of arc-shaped slots 31, namely central tube 3 arc-shaped slot 31 is blocked by this when in use pitman 41 and Realize and in the circumferential mutual spacing of pitman 41（Fig. 1）.Before each stop part of the central tube 3 is arranged on its body On corresponding one piece of plate body of rear side, namely described each stop part is corresponding one piece of the front and rear side plate of centrally disposed pipe 3 On plate body, positioned at the middle and upper part of the plate body and towards some non-return teeth 32 in outside.

See Fig. 3, the lifting component includes lifting sleeve 5, outer sleeve 6 and 2 check devices.See Fig. 1, lifting component makes Used time lifts sleeve 5 by it and is set on central tube 3, and lifts and existed when component uses by its lifting sleeve 5 relative to central tube 3 Moved along the axis direction of central tube 3 middle and upper part of central tube 3.Each check device using when be arranged on lifting sleeve 5 On the corresponding side of front and rear side, and can be under the collective effect of the corresponding stop part of central tube 3, in lifting sleeve 5 in When the axis direction of heart pipe 3 moves, it is prevented to move down.

See Fig. 1 and Fig. 3, the lifting sleeve 5 of the lifting component is integrated through injection molding part, provided with central portion, 2 limiting sections, 2 Individual non-return groove portion, 2 drawing ears 51 and 2 pieces of barrier plates 56.The central portion of lifting sleeve 5 is provided with center through hole, during use lifting cover Cylinder 5 is set on central tube 3 by its center through hole.The left and right sides in 2 described centrally located portions of limiting section, and the limit per side Position portion using when the corresponding a piece of afterbody 13 for strutting piece 1 can be carried out it is spacing.The limiting section of every side of the described left and right sides is The positioning for being arranged on 2 positioning convex 55 of the corresponding side in the left and right sides of lifting sleeve 5 and being set around the positioning convex 55 Neck 54.2 described non-return groove locations are in the front and rear sides of central portion, and the non-return groove portion per side is equipped with corresponding non-return Groove 53.Described 2 draw the left and right sides in 51 centrally located portion of ear, and positioned at the lower section of corresponding positioning convex 55, two drawings Ear 51 is symmetrical arranged, and is each drawn ear 51 to be provided be easy to that the afterbody 13 for strutting piece 1 passes through when using upper and lower and run through hollow Passage 52.Every piece of barrier plate 56 of 2 pieces of described barrier plates 56 is located at the top of the stop-return slot 53 of corresponding non-return groove portion.Every piece Barrier plate 56 is provided with a compression spring hole 58.Each non-return groove portion of lifting sleeve 5 is also respectively provided with 2 and turned along left and right to setting Axis hole 57, and the axis of 2 shaft holes is on same straight line.

Still see Fig. 1 and Fig. 3, each of 2 check devices of the lifting component includes non-return piece 71, rotating shaft 72, bullet Spring mounting post 73 and elastic mechanism.Non-return piece 71 is integrated through injection molding part, and rotating shaft 72 and spring mounting post 73 are steel integral piece, Elastic mechanism is steel compression spring.Rotating shaft 72 is arranged in a corresponding non-return groove portion for lifting sleeve 5, and through accordingly Shaft hole 57.Non-return piece 71 is enclosed in rotating shaft 72 by its underpart, and non-return piece 71 is located in the stop-return slot 52 of the non-return groove portion. The lower end of non-return piece 71 has the latch 71-1 that can be meshed when using with non-return teeth 32.Spring mounting post 73 is used as inserts It is arranged in non-return 71 injection molding of piece on non-return piece 71.Elastic mechanism is arranged on non-return piece 71, in the present embodiment, as The compression spring of elastic mechanism is fixed in spring mounting post 73 by its one end, and the other end of compression spring is then through corresponding resistance The spring eye of baffle plate 56 and one piece of mutual Elastic Contact of side plate corresponding to the front and rear side plate of central tube 3 when in use, in elastic force In the presence of the outside side of the top of non-return piece 71 rear side forward is stretched out so that non-return piece 71 is located at lower end The latch 71-1 Elastic Meshings of non-return teeth 32 corresponding with central tube 3.

See Fig. 1 and Fig. 2, the outer sleeve 6 of the lifting component is integrated through injection molding part.The outer sleeve 6 is provided with 2 operation windows Mouth 61.Outer sleeve 6 is enclosed on when using on lifting sleeve 5, and each of which action pane 61 is directed at stopping for a corresponding check device Return piece 71, and non-return piece 71 its latch 71-1 with the state of the corresponding Elastic Meshing of non-return teeth 32, its top is in In action pane 61, so that the top progress that now action pane 61 can be in the circumferential to non-return piece 71 is spacing.

See Fig. 5 and Fig. 6, described 2 strut piece 1 be shape just as integrated through injection molding part either passed through by titanium alloy material Cross the titanium alloy integral piece of 3D printer printing shaping.The piece 1 that struts includes strutting piece main body 11, connector 12, strutting piece Afterbody 13（It can be also simply referred to as afterbody 13）With projection 14.Connector 12, strut piece main body 11 and strut piece afterbody 13 and be sequentially connected. Connector 12 includes front limit portion 12-1, connecting plate 12-2 and rear limiting section 12-3.Front limit portion 12-1 and rear limiting section 12-3 The front and rear sides of an end face on the outside of the direction for the front/rear end for being symmetricly set on connecting plate 12-2 before and after point, and form two Between the chute 17 being oppositely arranged, wherein front limit portion 12-1 and connecting plate 12-2 formed before chute 17-1, connecting plate 12-2 with Chute 17-2 after then being formed between limiting section 12-3 afterwards.Projection 14 sets and is connected on connecting plate 12-2, and is slided towards setting The direction of groove 17 is stretched out.In use, each struts piece 1 and is connected through first 12 sides corresponding to the left and right sides leg of bearing 2 The side leg epimere 21-1 of leg 21 is fixedly connected according to removable plug fixed form.

See Fig. 5, strut piece main body 11 and be provided with some positioning holes 15, positioning hole 15 is waist round hole, the major axis side of waist round hole It is consistent to the length direction with strutting piece 1.The particular number of positioning hole 15 is 3-6.It is preferably 4 in the present embodiment.It is fixed The design in position hole 15, can effectively be solved the problems, such as in surgical procedure support hacking location difficulty；And positioning hole 15 selects waist Circular hole, the strutting after position fixes of piece 1 can be being strutted, the amplitude that struts for strutting piece 1 is being finely adjusted by waist round hole, with suitable The operation that should be performed the operation, it further enhancing the applicability for strutting piece 1.

（Application examples 1）

See Fig. 1 to Fig. 6, the application example is fixed installation tool and pedicle of vertebral arch using the installation tool described in embodiment 1 System links together.

The pedicle of vertebral arch fixed system of the application example includes multiple pedicle of vertebral arch fixed cells.As depicted in figs. 1 and 2, each vertebra Nut fixed cell includes pedicle screw 43, trim ring 44, bearing 2, pitman 41 and housing screw 42.The bottom of bearing 2 is set There is through hole, bearing 2 also has side leg position, and side leg position is provided with internal thread and has 2 side legs being oppositely arranged, 21,2 sides U is formed between leg 21.The top of trim ring 44 is provided with U-lag, and trim ring 44 is buckled in pedicle of vertebral arch screw by its underpart from top set The head of nail 43, both are in close contact.Pedicle screw 43 is passed through the through hole of the bottom of bearing 2 by its afterbody from the top down, and Its head is limited in the through hole, and now the U of the U-lag of trim ring 44 and bearing 2 is set along same direction, and presses The U-lag of circle 44 is located in the U of bearing 2.U-lag phase of the pitman 41 with the U of bearing 2 and with trim ring 44 Coordinate.For the pitman 41 to stay in the body, pitman 41 is embedded in the U and pressure of bearing 2 by one termination The head of underlying pedicle screw 43 can be compressed in the U-lag of circle 44.Housing screw 42 is screwed in the side of bearing 2 On the internal thread of leg position, pitman 41 pressed from above, so as to compress pedicle screw 43.The other end insertion of pitman 41 In the U groove of the bearing of adjacent other pedicle of vertebral arch fixed cells and it is fixed on another bearing, so that 2 adjacent pedicle of vertebral arch fixed cells are mutually permanently connected.Remaining adjacent pedicle of vertebral arch of whole pedicle of vertebral arch fixed system is fixed single Connection between member can also be a pitman and 3 three vertebral arch adjacent successively and on straight line as needed Root fixed cell is connected.For when screwing in pedicle screw 43 after being drilled on pedicle of vertebral arch, now used pitman 41 Length is shorter, and is only fixedly connected on a bearing 2, so as to facilitate pedicle screw 43 to be screwed in rotational installation instrument In pedicle of vertebral arch.

When installation tool and above-mentioned pedicle of vertebral arch fixed cell obtained by embodiment 1 are operated jointly, first complete The assembling of installation tool, then the connection of installation tool and pedicle of vertebral arch fixed cell is carried out, then carry out consolidating for pedicle of vertebral arch fixed cell Fixed operation, until the operation technique of whole pedicle of vertebral arch fixed system is completed, it specifically has main steps that：

First, each check device is arranged on to a corresponding non-return groove portion for lifting sleeve 5, also i.e. by compression spring One end, which is enclosed on, to be fixed in the mounting post 73 on the top of non-return piece 71, and causes the other end of compression spring to stretch into the pressure of barrier plate 56 In spring hole 58, and so that the one side in the outside of side is in lifting sleeve 5 before and after the limited block 71-2 of non-return piece 71 direction Entreat the inwall towards central axis of through hole relative, so as to which non-return piece 71 is positioned at into corresponding stop-return slot 53 by compression spring Place.Again by rotating shaft 72 sequentially pass through a shaft hole 57 of non-return groove portion, the bottom of non-return piece 71 corresponding mounting hole and non-return Another shaft hole 57 of groove portion, so as to which check device is arranged on lifting sleeve 5.In the case where rotating shaft 72 to be passed through to non-return piece 71 During the mounting hole in portion, non-return piece 71 is moved downwardly a small distance relative to stop-return slot 53, and causes the spacing of non-return piece 71 Block 71-2 enters in stop-return slot 53.Above-mentioned this mounting means make it that the installation of check device is more convenient quick.

Second, the every a piece of of piece 1 is strutted by 2, by its afterbody 13 from bottom to top through the sky for drawing ear 51 of lifting sleeve 5 After heart passage 52, stretch into the locating groove 54 of lifting sleeve 5, and the convex of lifting sleeve 5 is enclosed on by its 2 fixing holes 16 Rise on 55.

3rd, outer sleeve 6 is enclosed on lifting sleeve 5, and cause each action pane 61 of outer sleeve 6 to be directed at corresponding one Individual non-return piece 71, and the afterbody 13 that 2 now strut piece 1 is also respectively positioned in outer sleeve 6.

4th, knob 8 is enclosed on the upper end of central tube 3, then central tube 3 is worn from top to bottom by its lower end Cross the center through hole of lifting sleeve 5, and its be provided with front and rear sides of non-return teeth 32 and lifting sleeve 5 be provided with stop-return slot 53 Front and rear sides are corresponding.When central tube 3 inserts lifting sleeve 5, its latch of front side board 33 and back side panel with non-return piece 71 71-1 Elastic Contacts simultaneously outwards push latch 71-1 open, until central tube 3 reaches the desired position relative to lifting sleeve 5.This When, in the presence of compression spring, when central tube 3 will move up relative to lifting sleeve 5, then due to the latch of non-return piece 71 71-1 lower surface is in contact and spacing with the end face upward of the non-return teeth 32 of central tube 3, stops so as to be stuck Return.At this time, it may be necessary to people presses the top of non-return piece 71 with finger ecto-entad so that latch 71-1 lower surface and central tube The upper surface of 3 non-return teeth 32 disengages, and could move up central tube 3.So as to central tube 3 relative to carrying The help pull a cart position of cylinder 5 is adjusted.

5th, when adjusting central tube 3 relative to the position of sleeve 5 is lifted in place, you can carry out pedicle of vertebral arch fixed cell With the connection of installation tool.See Fig. 6, each side leg 21 of the bearing 2 divides for side leg epimere 21-1 and side leg hypomere 21-2, often Fixing groove 22 is equipped with individual side leg epimere 21-1, and is provided between side leg epimere 21-1 and side leg hypomere 21-2 and is used to fracture Fracture 23.

When strutting piece 1 on bearing 2, central tube 3 is directed at fixed system from the top down by its arc-shaped slot 31 Pitman, and blocked.Then by the front limit portion 12-1 on each connector for strutting piece 1 12 and rear limiting section 12-3 cards The live in side leg epimere 21-1 of a corresponding side leg 21, so that each struts piece 1 and be enclosed on a corresponding side by its connector 12 On leg 21, and the projection 14 by strutting piece 1 is inserted in the corresponding side leg epimere 21-1 fixing groove 22 of bearing 2, so that will On the side leg epimere 21-1 for strutting the corresponding side leg 21 that piece 1 is fixed on bearing 2.

When each piece 1 that struts is enclosed on by the chute 17 of its both sides on corresponding side leg epimere 21-1 and along side leg epimere When 21-1 both sides are slided down in the insertion fixing groove 22 of projection 14, projection 14 can form certain deformation, in projection 14 In the presence of elastic force caused by because of deformation so that strut piece 1 and move to extreme position relative to side leg 21.The company of connector 12 Fishplate bar 12-2 thickness of slab is relatively thin, and between 1-3 mm, and the flexible material of material selection, such as plastics completely can be with Solve the problems of existing pedicle of vertebral arch fixed system, and it is easy to use.6th, consolidating for pedicle screw 43 is being carried out When operating surely, operating personnel hold knob 8 with the right hand, and left hand holds the drawing ear 51 and outer sleeve 6 of lifting sleeve 5, and By operate check device adjust lifting sleeve 5 relative to central tube 3 position, rotate down knob 8 and by pacifying After holding tool will screw in pedicle of vertebral arch positioned at the pedicle screw 43 for strutting the lower section of piece 1, remove successively in spherical handle 8 Heart pipe 3 and outer sleeve 6, then the afterbody 13 for strutting piece 1 is disengaged with lifting being located by connecting for sleeve 5, so as to which lifting is covered The check device that cylinder 5 is carried together with it is removed, and now i.e. available dilator supports 2 be oppositely arranged on bearing 2 Hacking 1 struts mutual distance.The selection on position can be carried out during strutting by oval positioning hole 15.Then, Shorter pitman 41 can be replaced by required longer pitman 41, and carried out in the preferable visual field and opereating specification The adjustment of pedicle of vertebral arch fixed system, until adjustment is completed.

7th, fractureed the side leg epimere 21 of bearing 2 with fracturer at the fracture 23 of bearing 2, so as to together with strutting piece 1 Together removed from operative site, then suture etc. subsequent operation and complete operation.

Using it is above-mentioned according to desirable embodiment of the present utility model as enlightenment, pass through above-mentioned description, related work people Member can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item is real The content being not limited to new technical scope on specification, it is necessary to which its technology is determined according to right Property scope.

Claims (4)

1. a kind of pedicle of vertebral arch fixed system installation tool, including 2 strut piece（1）；It is characterized in that：Also include central tube （3）, lifting component and handle；Lifting component includes lifting sleeve（5）And check device；Component is lifted during use to be covered by its lifting Cylinder（5）It is set in central tube（3）Above and can be relative to central tube（3）Along central tube（3）Axis direction moves up and down, and by only Return device is in lifting sleeve（5）Along central tube（3）Stopped when axis direction moves down；Check device also has solution manually Except the function of non-return；The central tube（3）The company of pedicle of vertebral arch fixed system can be arranged on during use by its lower end part press-down type Take over the baton（41）It is upper and mutually spacing in the circumferential, and cause central tube（3）Can together it be rotated with pedicle of vertebral arch fixed system；It is described to carry Help pull a cart cylinder（5）Piece can be strutted during provided with use to each（1）Afterbody（13）Carry out spacing corresponding limiting section, and each support Hacking（1）Centrally disposed pipe can be pressed close to when in use（3）Left and right sides corresponding side, each struts piece（1）Lower end Bearing can be fixedly connected on when being and using（2）A corresponding side leg（21）On position；It is fixedly installed during the handle use In central tube（3）Upper end on.

2. pedicle of vertebral arch fixed system installation tool as claimed in claim 1, it is characterised in that：The lifting component includes carrying Help pull a cart cylinder（5）With 2 check devices；Central tube（3）Every side of side is provided with a stop part before and after top wherein；The lifting Sleeve is lifted by it when component uses（5）It is set in central tube（3）On, and lift and sleeve is lifted by it when component uses（5）Phase For central tube（3）In central tube（3）Middle and upper part along central tube（3）Axis direction moves；The lifting sleeve（5）Left and right Every side of both sides, which is provided with, to strut piece to accordingly a piece of（1）Afterbody（13）Carry out spacing limiting section；Each non-return dress Lifting sleeve is arranged on when putting use（5）Front and rear side corresponding side on, and can be in central tube（3）Corresponding stop part Collective effect under, lifting sleeve（5）Along central tube（3）When axis direction moves, it is prevented to move down.

3. pedicle of vertebral arch fixed system installation tool as claimed in claim 2, it is characterised in that：The central tube（3）In The stop part on top is centrally disposed pipe（3）Front and rear side plate plate body on, positioned at the middle and upper part of plate body and towards outside Some non-return teeth（32）；Each check device includes non-return piece（71）, rotating shaft（72）And elastic mechanism；Lift sleeve（5） Front and rear side be respectively provided with a non-return groove portion；Lift sleeve（5）Each non-return groove portion be provided with corresponding stop-return slot（52）；Rotating shaft （72）It is arranged on lifting sleeve（5）A corresponding non-return groove portion on, non-return piece（71）It is enclosed on rotating shaft（72）Above and positioned at described The stop-return slot of non-return groove portion（52）In, the non-return piece（71）Lower end has can be with non-return teeth when using（32）The card being meshed Tooth（71-1）；Elastic mechanism is arranged on non-return piece（71）On, or non-return piece is arranged on simultaneously（71）And rotating shaft（72）On, and bullet Property mechanism causes non-return piece by its spring energy when in use（71）Latch（71-1）With corresponding non-return teeth（32）Elasticity is nibbled Close.

4. pedicle of vertebral arch fixed system installation tool as claimed in claim 3, it is characterised in that：The lifting component also includes Outer sleeve（6）；The outer sleeve（6）Provided with 2 action panes（61）；Outer sleeve（6）Lifting sleeve is enclosed on during use（5）On, And each of which action pane（61）It is directed at the non-return piece of a corresponding check device（71）, and non-return piece（71）In its latch （71-1）With corresponding non-return teeth（32）In the state of Elastic Meshing, non-return piece（71）Top be in action pane（61） In, so that now action pane（61）Can be in the circumferential to non-return piece（71）Top carry out it is spacing.