CN209499870U - Pedicle nail dilator used in a kind of minimally invasive spine surgical - Google Patents

Abstract

The utility model discloses pedicle nail dilators used in a kind of minimally invasive spine surgical, including rigid staybolt open arms, mobile support open arms, sliding rail, the rigid staybolt open arms includes fixed section, first linking arm, first operating side, the mobile support open arms includes sliding sleeve, second linking arm, second operating side, described sliding rail one end is fixedly connected on the side wall of fixed section, the sliding sleeve set is on the slide rail, first linking arm both ends are hinged with fixed section and the first operating side respectively, the T-type structure of first operating side of the utility model and the second operating side front end can be inserted directly into the slot of pedicle nail, the cylindrical piece at both ends is stuck in the two sides of pedicle nail slot, this kind of fixing means fixing-stable, it is less likely to occur to slip；When being strutted, stablize the movement of mobile support open arms more smooth, positioning pin is inserted into lockable mobile support open arms position in the groove of regulating wheel side, and the utility model is easy to operate, and it is low in cost, procedure efficiency can be improved.

Description

Pedicle nail dilator used in a kind of minimally invasive spine surgical

Technical field

The utility model relates to spinal surgery medical instrument, vertebra used in a kind of minimally invasive spine surgical is particularly belonged to Nut follows closely dilator.

Background technique

With the development of Minimally invasive procedure technology, channel auxiliary lower lumbar spine fusion is to treat lumbar vertebrae room for manoeuvre disease in recent years The new technology of disease has obtained generally accepting, but the operation operates in vitro, makes because having the characteristics that wound is small, restores fastly minimally invasive Existing instrument to strut effect to pedicle nail poor；Intervertenral space can not be strutted well, and then carries out interbody fusion, it is existing Some dilator front ends need to be inserted into pedicle nail, however front end is in bending, occupies bigger space, be had to surgical procedure There is limitation, and front end is fixed on unstable in pedicle of vertebral arch, easy slippage；And the railroad that existing distraction reduction device uses Using the mode of operation pulled manually, dynamics and degree can not be grasped, it is inconvenient for operation.

Utility model content

To solve the above-mentioned problems, the utility model devises pedicle nail used in a kind of minimally invasive spine surgical and struts Device, fixing end designed by the utility model can be inserted directly into pedicle nail, and direct distraction pedicle screw occupies little space, behaviour Facilitate.

In order to reach the above technical purpose, above-mentioned technical effect is realized, the utility model is achieved through the following technical solutions :

Pedicle nail dilator used in a kind of minimally invasive spine surgical, including rigid staybolt open arms, mobile support open arms, cunning Rail, it is characterised in that:

The rigid staybolt open arms includes fixed section, the first linking arm, the first operating side, and the mobile support open arms includes sliding Set, the second linking arm, the second operating side, described sliding rail one end are fixedly connected on the side wall of fixed section, and the sliding sleeve is covered in sliding rail On, first linking arm both ends are hinged with fixed section and the first operating side respectively, second linking arm both ends respectively with cunning It covers end and the second operating side is hinged；

The elongated bulk of the sliding rail, surface offer perforative long stripes through hole, and the through-hole lower end edge is sliding Rail length direction is provided with rack gear, and the sliding sleeve side is equipped with regulating wheel, and regulating wheel center is fixedly connected with adjusting rod, adjusts Gear is fixedly installed in the middle part of bar, the rack gear on the gear and sliding rail in through-hole is cooperatively connected, and not opposite with rack gear One side contacts, the edge of the regulating wheel uniformly open up multiple grooves, are located to be equipped with beside regulating wheel on the sliding sleeve and determine Position pin, the positioning pin are equipped with positioning end, handle end, sliding end, and the sliding end is stuck in the sliding slot on sliding sleeve；

The end of first operating side and the second operating side is T-shaped, and the both ends of T-type structure are fixedly connected with cylindrical piece.

Further, the positioning pin slides in sliding slot, and positioning end can be inserted into the groove in regulating wheel.

The beneficial effects of the utility model are: the T junction of the first operating side of the utility model and the second operating side front end Structure can be inserted directly into the slot of pedicle nail, and the cylindrical piece at both ends is stuck in the two sides of pedicle nail slot, this kind of fixing means is fixed Stablize, it is not easy to slip；When being strutted, rotation regulating wheel can be such that mobile support open arms slides, the adjusting side Method makes mobile support open arms is mobile more to stablize smooth, lockable mobile support open arms position in the groove of positioning pin insertion regulating wheel side It sets, the utility model is easy to operate, and it is low in cost, procedure efficiency can be improved.

Detailed description of the invention

In order to illustrate more clearly of the technical solution of the utility model embodiment, make required for being described below to embodiment Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings Other attached drawings.

Fig. 1 is the structural schematic diagram of pedicle nail dilator used in a kind of minimally invasive spine surgical.

Fig. 2 is the enlarged drawing of a-quadrant shown in Fig. 1.

Fig. 3 is the structural schematic diagram of the sliding sleeve.

Fig. 4 is the structural schematic diagram of the regulating wheel.

Fig. 5 is the structural schematic diagram of the positioning pin.

In attached drawing, list of designations representated by each label is as follows:

1- rigid staybolt open arms, 11- fixed section, the first linking arm of 12-, the first operating side 13-, 14- cylindrical piece, 2- mobile support Open arms, 21- sliding sleeve, 211- sliding slot, the second linking arm of 22-, the second operating side 23-, 3- sliding rail, 31- through-hole, 32- rack gear, 4- tune Section wheel, 41- groove, 42- adjusting rod, 43- gear, 5- positioning pin, 51- positioning end, 52- handle end, 53- sliding end.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts All other embodiment obtained, fall within the protection scope of the utility model.

Refering to fig. 1 shown in -5, pedicle nail dilator used in a kind of minimally invasive spine surgical, including rigid staybolt open arms 1, Mobile support open arms 2, sliding rail 3, it is characterised in that:

The rigid staybolt open arms 1 includes fixed section 11, the first linking arm 12, the first operating side 13, the mobile support open arms 2 Including sliding sleeve 21, the second linking arm 22, the second operating side 23, described 3 one end of sliding rail is fixedly connected on the side wall of fixed section 11, institute 21 sets of sliding sleeve are stated on sliding rail 3,12 both ends of the first linking arm are hinged with fixed section 11 and the first operating side 13 respectively, described Second linking arm, 22 both ends are hinged with 21 end of sliding sleeve and the second operating side 23 respectively；

The elongated bulk of the sliding rail 3, surface offer perforative long stripes through hole 31,31 lower end of through-hole 3 length direction of sliding rail is provided with rack gear 32,21 side of sliding sleeve is equipped with regulating wheel 4, and 4 center of regulating wheel is fixedly connected with Adjusting rod 42, the middle part of adjusting rod 42 are fixedly installed with gear 43, and the gear 43 is matched with the rack gear 32 in through-hole 31 on sliding rail 3 Connection is closed, and a side contacts not opposite with rack gear 32, the edge of the regulating wheel 4 uniformly open up multiple grooves 41, the cunning The side for being located at regulating wheel 4 on set 21 is equipped with positioning pin 5, and the positioning pin 5 is equipped with positioning end 51, handle end 52, sliding end 53, the sliding end 53 is stuck in the sliding slot 211 on sliding sleeve 21；

The end of first operating side 13 and the second operating side 23 is T-shaped, and the both ends of T-type structure are fixedly connected with cylinder Block 14.

Further, the positioning pin 5 slides in sliding slot 211, and positioning end 51 can be inserted into the groove 41 in regulating wheel 4 It is interior.

It is specific embodiment of the utility model below, before performing the operation to patient, patient need to be anaesthetized, is anaesthetized After success, patient takes prone position, appears push plate spinous process and the pass of Thoracolumbar disk after disinfection paving list using spatium intermusculare approach by posterior spinous process Zygapophyseal joints need to be first by nail pedicle fix on lumbar vertebrae before progress pedicle nail struts；Reuse the utility model into Row pedicle nail struts, and patient's body is protruded into the first operating side 13 and 23 underwent operative operation port of the second operating side, by operating side The T-type structure of front end is inserted directly into the slot of pedicle nail, and the cylindrical piece 14 of T-type structure both ends setting is stuck in pedicle nail slot Two sides, so that operating side be enable to be stably fixed in pedicle nail slot；

After operating side is fixed in pedicle nail, that is, the device distraction pedicle screw can be used, by operating regulating wheel 4 Mobile support open arms 2 is moved, to strut intervertenral space by distraction pedicle screw, is conducive to handle interverbebral disc placement centrum Between fusion device；The principle of the device distraction pedicle screw are as follows: rotation regulating wheel 4, due to be connected in regulating wheel 4 adjusting rod 42 and Rack gear 32 in the middle part of sliding sleeve 21 and sliding rail 3, adjusting rod 42 in fixed gear 43 and 3 through-hole 31 of sliding rail is cooperatively connected, because This, rotates regulating wheel 4, and gear 43 is rotated with it and moved on rack gear 32, so that sliding sleeve 21 be driven to slide on sliding rail 3, moves Dynamic to strut arm 2 and move, when strutting to a certain extent, slide jaw 5 makes 5 positioning end 51 of positioning pin insertion regulating wheel 4 In the groove 41 of side, to lock the position of mobile support open arms 2, realization struts pedicle nail, to strut intervertenral space.

In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one of the utility model In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiment or examples In can be combined in any suitable manner.

The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously There is no the details that detailed descriptionthe is all, also not limiting the utility model is only the specific embodiment.Obviously, according to this theory The content of bright book can make many modifications and variations.

Claims (2)

1. pedicle nail dilator used in a kind of minimally invasive spine surgical, including rigid staybolt open arms, mobile support open arms, sliding rail, It is characterized by:

The rigid staybolt open arms includes fixed section, the first linking arm, the first operating side, and the mobile support open arms includes sliding sleeve, Two linking arms, the second operating side, described sliding rail one end are fixedly connected on the side wall of fixed section, and the sliding sleeve covers on the slide rail, institute It is hinged with fixed section and the first operating side respectively to state the first linking arm both ends, second linking arm both ends respectively with sliding sleeve end It is hinged with the second operating side；

The elongated bulk of the sliding rail, surface offer perforative long stripes through hole, and the through-hole lower end edge sliding rail is long Degree direction is provided with rack gear, and the sliding sleeve side is equipped with regulating wheel, and regulating wheel center is fixedly connected with adjusting rod, adjusting rod Middle part is fixedly installed with gear, and the rack gear on the gear and sliding rail in through-hole is cooperatively connected, and side not opposite with rack gear Contact, the edge of the regulating wheel uniformly open up multiple grooves, are located at beside regulating wheel on the sliding sleeve and are equipped with positioning pin, The positioning pin is equipped with positioning end, handle end, sliding end, and the sliding end is stuck in the sliding slot on sliding sleeve；

The end of first operating side and the second operating side is T-shaped, and the both ends of T-type structure are fixedly connected with cylindrical piece.

2. pedicle nail dilator used in a kind of minimally invasive spine surgical according to claim 1, it is characterised in that: institute It states positioning pin to slide in sliding slot, positioning end can be inserted into the groove in regulating wheel.