A kind of horizontal device that is connected of pedicle nail suitable for Minimally Invasive SurgeryTechnical field
The present invention relates to the horizontal dress that is connected of medical instruments field, especially a kind of pedicle nail suitable for Minimally Invasive SurgeryPut.
Background technology
Backbone is carried out using pedicle screw systems to fix being current clinically for fixing maximally effective side in Via Posterior Spinal ApproachMethod, biomechanics Research shows that internal fixation system can connect the hold-down bars of both sides plus horizontal connection, connect into the nail rod of both sidesOne entirety, significantly improves the stability of pedicle screw systems, that is, improves antitorque, and resistance to plucking goes out, the ability of loosing prevention, horizontal companyConnect all to place after pedicle of vertebral arch determines system in traditional open posterior at present and place again, it is percutaneous at present due to the difficult reason of placementMinimally invasive pedicle of vertebral arch determines the horizontal connection that system there is no adapted, and open pedicle of vertebral arch is fixed surely, because otch is larger, to paraspinal muscle in artPeel off, cause wound big, bleeding is more, postoperative paraspinal muscle adhesion, atrophy, situations such as pain in back and loin is powerless often occurs, in recent years, warpThe minimally invasive pedicle nail of skin is widely used, but because otch is small, traditional horizontal attachment system can not be used substantially.
The content of the invention
In order to solve the deficiencies in the prior art, it is an object of the invention to provide a kind of simple in construction, small volume, placement sideJust and suitable for the horizontal device that is connected of pedicle nail of Minimally Invasive Surgery.
In order to realize above-mentioned technical purpose, the technical scheme is that：
The horizontal device that is connected of a kind of pedicle nail suitable for Minimally Invasive Surgery, for the pedicle nail for being implanted into backbone both sides to be enteredRow is laterally fixed, and it, which includes a pair, is used to be oppositely arranged on the contiguous block of backbone both sides, is located in a pair of contiguous block bottoms respectivelyAnd a pair of head rods being connected with the nail pedicle fix of backbone both sides and two ends are located in the perpendicular of a pair of contiguous blocks respectivelyNogata is to middle part and by the second connecting rod of two contiguous block lateral connections, and described head rod and the second connecting rod are perpendicularThe projection of Nogata upwards is mutually perpendicular to, and the position that wears of described contiguous block correspondence head rod is provided with through contiguous block both sidesFirst through hole, contiguous block correspondence the second connecting rod wear position be provided with through contiguous block both sides the second through hole, the companyThe upper end for connecing block is provided with the circular fixing groove connected with the second through hole, and the side wall of the fixing groove is provided with helicitic texture and screw threadIt is connected with the fastening bolt that the second connecting rod is fixed for abutting.
Further, described first through hole is located in contiguous block for the home position of arc-shaped through-hole and the arc-shaped through-hole.
Further, described contiguous block is provided with U-shaped inner fovea part positioned at two side positions that the second through hole is worn.
Further, described contiguous block, which is located above two side positions that first through hole is worn, is provided with the first extension slot, describedThe first extension slot connected with first through hole and the second through hole.
Further, the fixing groove of the contiguous block upper end wears direction both sides provided with extending to connection along the second connecting rodThe second extension slot of block side.
Further, the upper end of the fastening bolt is arranged at fastening for the helicitic texture of interior hexagonal structure and fastening boltThe whole outer circumferential side of bolt.
Further, the edge of the contiguous block is circular arc chamfering transition.
Further, described contiguous block, head rod, the second connecting rod and fastening bolt are alloy material.
Further, the radial section of second connecting rod is circular, kidney-shaped or square.
Using above-mentioned technical scheme, beneficial effects of the present invention are：It is used to be oppositely arranged on backbone both sides by a pairContiguous block carry out wear a pair of head rods for being connected to be connected with the nail pedicle fix of backbone both sides so that homonymyPedicle nail simply and easily can be connected on head rod, and head rod is fixed by contiguous blockIt can realize that the pedicle nail positioned at backbone homonymy is fixed in the lump, in addition the second connection again by being located on contiguous blockBar can simply and easily carry out the laterally opposed fixation of a pair of head rods, and can pass through the fastening spiral shell on contiguous blockFollow closely that the horizontal fixed position of the second connecting rod is adjusted so that the pedicle nail that contiguous block goes for both sides is being setThe different situation of spacing, in addition, contiguous block can to connect positioned at two side positions that the second through hole is worn provided with U-shaped inner fovea partBlock can reduce deadweight on the one hand, on the other hand can cause the second connecting rod worn in end into the stroke in contiguous block compared withThe end position situation of the second connecting rod can be also viewed in short-term, by setting the first extension slot and first through hole and second logicalHole connection can also reduce deadweight and be easy to the arc opening size of slight regulation first through hole so that head rod can be in order toRegulation is fixed, and the edge of contiguous block can cause contiguous block when implanting using circular arc chamfering in addition, it is to avoid with wound groupKnit and produce the sensation that strong friction causes discomfort.
Brief description of the drawings
The present invention is further elaborated with reference to the accompanying drawings and detailed description：
Fig. 1 is schematic diagram when apparatus of the present invention are implemented；
Fig. 2 is the schematic diagram that apparatus of the present invention implement one of structure；
Fig. 3 is the exploded perspective view for implementing structure shown in Fig. 2.
Embodiment
As shown in Fig. 1 to one of 3, apparatus of the present invention are used to carry out the pedicle nail for being implanted into the both sides of backbone 5 laterally to fix,It include a pair be used for be oppositely arranged on the both sides of backbone 5 contiguous block 1, be located in respectively a pair of bottoms of contiguous block 1 and with backbone 5The pedicle nail of both sides（It is not shown）A pair of the head rods 2 being fixedly connected and two ends are located in a pair of contiguous blocks 1 respectivelyIn the middle part of vertical direction and by the second connecting rod 3 of two lateral connections of contiguous block 1, described head rod 2 and second is connectedThe projection of the in the vertical direction of bar 3 is mutually perpendicular to, and the described correspondence of contiguous block 1 head rod 2 wears position provided with running throughThe first through hole 11 of the both sides of contiguous block 1, the position that wears of the second connecting rod 3 of correspondence of contiguous block 1 is provided with through the both sides of contiguous block 1Second through hole 12, the upper end of the contiguous block 1 is provided with the circular fixing groove 13 connected with the second through hole 12, the side of the fixing grooveWall is provided with helicitic texture and is threaded with the fastening bolt 4 that the second connecting rod 3 is fixed for abutting.
In order to enable head rod 2 to be fixed on by firm wear in contiguous block 1, further, described theOne through hole 11 is located in contiguous block 1 for the home position of arc-shaped through-hole and the arc-shaped through-hole.
Further, described contiguous block 1 is provided with U-shaped inner fovea part 14 positioned at two side positions that the second through hole 12 is worn.
Further, described contiguous block 1, which is located above two side positions that first through hole 11 is worn, is provided with the first extension slot 15,The first described extension slot 15 is connected with the through hole 12 of first through hole 11 and second.
Clamping, which is carried out, for the ease of operating forceps places contiguous block 1 and the deadweight for reducing contiguous block 1 and volume, further, instituteThe fixing groove 13 for stating the upper end of contiguous block 1 is prolonged along the direction both sides that wear of the second connecting rod 3 provided with the side of contiguous block 1 second is extended toStretch groove 131.
In order that obtaining the volume of fastening bolt 4 can further reduce to be adapted to the requirement of Minimally Invasive Surgery, and further, instituteState the whole periphery that the upper end of fastening bolt 4 is arranged at fastening bolt 4 for the helicitic texture of interior hexagonal structure and fastening bolt 4Side.
Further, the edge of the contiguous block 1 is circular arc chamfering transition.
Further, described contiguous block 1, head rod 2, the second connecting rod 3 and fastening bolt 4 are alloy material.
Further, the radial section of second connecting rod is circular, kidney-shaped or square.
The present invention uses above-mentioned technical scheme, is carried out by a pair for being oppositely arranged on the contiguous block 1 of the both sides of backbone 5A pair of the head rods 2 for being connected to be connected with the nail pedicle fix of the both sides of backbone 5 are worn so that the pedicle nail of homonymyCan be simply and easily connected on head rod 2, and head rod 2 is fixed by contiguous block 1 can be realNow the pedicle nail positioned at the homonymy of backbone 5 is fixed in the lump, in addition again can by the second connecting rod 3 being located on contiguous blockSimply and easily to carry out the laterally opposed fixation of a pair of head rods 2, and can be by the trip bolt on contiguous block 14 are adjusted the horizontal fixed position of the second connecting rod 3 so that the pedicle nail that contiguous block 1 goes for both sides is being setPut the different situation of spacing, in addition, contiguous block 1 be located at two side positions that wear of the second through hole 12 can be with provided with U-shaped inner fovea part 14So that contiguous block 1 can reduce deadweight on the one hand, the second connecting rod 3 on the other hand can be caused to be worn in end into contiguous blockStroke in 1 can also view the end position situation of the second connecting rod 3 when shorter, by setting the first extension slot 15 and theOne through hole 11 connects the arc opening size that can also reduce deadweight and be easy to slight regulation first through hole 11 with the second through hole 12, makesObtaining head rod 2 can be in order to adjust fixation, and the edge of contiguous block 1 can cause contiguous block 1 to exist using circular arc chamfering in additionWhen implanting, it is to avoid the sensation that strong friction causes discomfort is produced with wound tissue, when the vertebral arch of the Minimally Invasive Surgery of the present inventionAfter the horizontal fixed connection apparatus of root nail is loaded onto, the stabilization of minimally invasive pedicle screw systems can be greatly improved by minimally invasive horizontal connectionProperty, reach effective therapeutic purposes.
Described above is embodiments of the invention, for the ordinary skill in the art, according to the religion of the present inventionLead, without departing from the principles and spirit of the present invention all equivalent changes done according to scope of the present invention patent, repairChange, replace and modification, should all belong to the covering scope of the present invention.