The sustentaculum of talus screw guidesTechnical field
The present invention relates to a kind of sustentaculum of talus screw guides.
Background technology
Fracture of calcaneus is modal fracture of tarsus, accounts for 60% of fracture of tarsus, accounts for 2% of whole body fracture, and its treatment is difficulty comparatively, and sequela is many.Most of fractures of calcaneus are that intra-articular fracture is subsided with posterior articular facet, involve calcaneus lateral surface and weak central angular zone, compress and lose corpora calcanei central angular zone sclerotin.The inboard sustentaculum tali of calcaneus is a special construction of calcaneus, has important function in the process of body support quality and transmission stress, the inboard load-bearing pillar comparatively strong with the common composition in the medial wall of calcaneus.Because sustentaculum of talus is shifted when fracturing less, the next involutory sustentaculum tali sclerite of clinical normal tractive outside tuberosity sclerite reaches the good reduction of the fracture.
The normal screw position that occurs is unsatisfied with in the fracture of calcaneus operative treatment at present, the even generation of the Iatrogenic Complications such as inside structure damage, mistake screw is inserted below sustentaculum of talus interior and the medial surface of sustentaculum tali, the smooth of big toe Flexor hallucis longus tendon and vagina tendinum musculi flexorum digitorum pedis pipe will be affected, cause dysfunction and pain, and injured blood vessel and neural possibility are arranged.Outside calcaneus operative approach is onlyly in present fracture of calcaneus operative approach can provide for posterior articular facet the approach of abundant exposure widely, be difficult to fully expose sustentaculum tali through this approach, this scheme, and what rely on is doctor's experience and technology, there is certain surgical field of view blind area when placing internal fixation screw outside to inside, cause screw placement position generation deviation, some postoperative complications occur.
Summary of the invention
Deficiency for the prior art existence, the object of the present invention is to provide and a kind ofly can accurately insert the fixedly screw of sustentaculum tali, provide convenience, accurately reach the method for safety for operation technique, also bring the sustentaculum of talus screw guides of better clinical efficacy simultaneously for the patient.
for achieving the above object, the invention provides following technical scheme: a kind of sustentaculum of talus screw guides, comprise support arm and inner support, described support arm is hinged with an end of inner support and is connected, the hinged place of described support arm and inner support is provided with securing member, the corresponding hinged place of described support arm is provided with first and regulates keeper, the described support arm other end is provided with second and regulates keeper, described first regulates keeper and second regulates and is provided with the spacing that confession human body ankle passes between keeper and both are on same straight line, the corresponding hinged place of described inner support is provided with the first pedicle screw guide pipe, the described inner support other end is provided with the second pedicle screw guide pipe, be provided with the spacing of passing for the human body ankle between described the first pedicle screw guide pipe and the second pedicle screw guide pipe and both are on same straight line.
by adopting technique scheme, during operation, the first pedicle screw guide pipe is positioned over the sustentaculum tali place, (fixedly dissetion part can be by the man to different height and weights for this for fixedly dissetion part outside being positioned over the second pedicle screw guide pipe enough, the women adds up and draws, also can make film and draw), then utilize second to regulate keeper with fixing outside foot, first regulates keeper with fixing around sustentaculum tali, make support arm and ankle part fix, make the first pedicle screw guiding mouth of pipe aim at sustentaculum tali, and the second pedicle screw guide pipe fixedly dissetion part place in the alignment feet outside at first, rotating the first pedicle screw guide pipe makes inner support and support arm rotate, after angled, (this angle is by the man to different height and weights, the women adds up and draws, also can make film and draw), make inner support relative with support arm fixing by securing member, and then by the first pedicle screw guide pipe drivescrew, fixing fracture site, also can pass through fixedly calcaneus fracture of the second pedicle screw guide pipe drivescrew.
The present invention further arranges: described support arm and inner support are set to respectively remove the fan-shaped profile shape in right angle of a right-angle side, are provided with angle index on the arc limit of described support arm or inner support.
By adopting technique scheme, can regulate accurately the rotational angle of inner support and support arm, further improved the accuracy of screw placement.
The present invention further arranges: described support arm is provided with two, and two support arms are the Parallel Symmetric setting, and is provided with the interval between two support arms, and described inner support is swingable to be arranged between two support arms.
By adopting technique scheme, improved the steadiness of sustentaculum of talus screw guides structure, reduced because deviation appears in sustentaculum of talus screw guides structure built on the sand, further improved the accuracy of screw placement.
The present invention further arranges: be fixedly connected by several connectors between described two support arms, described securing member, first is regulated keeper and second and is regulated keeper, is set to respectively bolt.
By adopting technique scheme, improved the convenience of operation.
The invention will be further described below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is embodiment of the present invention structure chart.
The specific embodiment
referring to accompanying drawing 1, sustentaculum of talus screw guides disclosed by the invention, comprise support arm 1 and inner support 2, described support arm 1 is hinged with an end of inner support 2 and is connected, described support arm 1 is provided with securing member 3 with the hinged place of inner support 2, the corresponding hinged place of described support arm 1 is provided with first and regulates keeper 4, described support arm 1 other end is provided with second and regulates keeper 5, described first regulates keeper 4 and second regulates and is provided with the spacing that confession human body ankle passes between keeper 5 and both are on same straight line, the corresponding hinged place of described inner support 2 is provided with the first pedicle screw guide pipe 6, described inner support 2 other ends are provided with the second pedicle screw guide pipe 7, be provided with the spacing of passing for the human body ankle between described the first pedicle screw guide pipe 6 and the second pedicle screw guide pipe 7 and both are on same straight line.by adopting technique scheme, during operation, the first pedicle screw guide pipe 6 is positioned over the sustentaculum tali place, (fixedly dissetion part can be by the man to different height and weights for this for fixedly dissetion part outside being positioned over the second pedicle screw guide pipe 7 enough, the women adds up and draws, also can make film and draw), then utilize second to regulate keeper 5 with fixing outside foot, first regulates keeper 4 with fixing around sustentaculum tali, make support arm 1 and ankle part fix, make 6 mouthfuls of the first pedicle screw guide pipes aim at sustentaculum tali, and the second pedicle screw guide pipe 7 fixedly dissetion part place in the alignment feet outside at first, rotating the first pedicle screw guide pipe 6 makes inner support 2 and support arm 1 rotate, after angled, (this angle is by the man to different height and weights, the women adds up and draws, also can make film and draw), make inner support 2 relative with support arm 1 fixing by securing member 3, and then by the first pedicle screw guide pipe 6 drivescrews, fixing fracture site, also can pass through fixedly calcaneus fracture of the second pedicle screw guide pipe 7 drivescrews.
The present embodiment further arranges: described support arm 1 and inner support 2 are set to respectively remove the fan-shaped profile shape in right angle of a right-angle side, are provided with angle index on the arc limit 101,201 of described support arm 1 or inner support 2.By adopting technique scheme, can regulate accurately the rotational angle of inner support 2 and support arm 1, further improved the accuracy of screw placement.
The present embodiment further arranges: described support arm 1 is provided with two, and two support arms 1 are the Parallel Symmetric setting, and is provided with the interval between two support arms 1, and described inner support 2 is swingable to be arranged between two support arms 1.By adopting technique scheme, improved the steadiness of sustentaculum of talus screw guides structure, reduced because deviation appears in sustentaculum of talus screw guides structure built on the sand, further improved the accuracy of screw placement.
The present embodiment further arranges: be fixedly connected by several connectors 8 between described two support arms 1, described securing member 3, first is regulated keeper 4 and second and is regulated keeper 5, is set to respectively bolt.By adopting technique scheme, improved the convenience of operation.