CN105662560A

CN105662560A - Combined stent internal fixation apparatus

Info

Publication number: CN105662560A
Application number: CN201410664793.7A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-11-20
Filing date: 2014-11-20
Publication date: 2016-06-15

Abstract

The invention discloses a combined stent internal fixation apparatus, which comprises fixation rods, connecting hooks, jackscrews and screw nails. The combined stent internal fixation apparatus is characterized in that annular grooves or spiral grooves are uniformly distributed in the surfaces of the fixation rods; at least one locking hole or pressurizing hole is formed in a flat part at each of two ends or at one end of each of the fixation rods; the connecting hooks include single-rod connecting hooks and dual-rod connecting hooks; each of the single-rod connecting hooks is an opening clamping groove, and at least one locking hole and at least one jackscrew hole are formed in the main plane of each of the single-rod connecting hooks; each of the dual-rod connecting hooks includes an opening clamping groove and a round rod hole; and at least one locking hole and at least one jackscrew hole are formed in the main plane of each of the dual-rod connecting hooks. According to the combined stent internal fixation apparatus disclosed by the invention, since the connecting hooks are opening clamping hook grooves, the screw nails and the connecting hooks can be freely assembled with the fixation rods conveniently, so that a stable stent device is formed; therefore, the fixation apparatus is beneficial for the reduction and fixation of fracture blocks so as to form rigid stent fixation, adaptive to an overall human skeleton anatomical structure and conducive to fracture healing. A reduction and fixation effect is enhanced, indications are expanded and the occurrence of complications is relieved.

Description

Modular support inner fixing device

Technical field

The present invention relates to a kind of technical field of medical instruments, it is specifically related to a kind of combination support inner fixing device that to be suitable under fracture state bone orthopedic.

Background technology

Along with appearance, the JosephLister in 1867 of Pasteur physical disinfection method has invented chemostefilant, surgery Aseptic technique obtains significant progress, for the development of orthopaedics internal fixation operation creates basic condition. , although having there is some outstanding inventors and technological innovation, but for how carrying out the rule of operative treatment not standard in Fracture internal fixaiion field in nineteen forties and the fifties. The Fracture internal fixaiion techniques and methods that AO group proposes the fixing principle of fracture with compressive, establishes system under this kind of historical conditions. Products large quantities of on this basis be developed produce, various pressurization, locking, dissection type etc. and Liss steel plate be applied to clinical, marrow nail series is also used widely simultaneously.

The birth, the clinical disease that are implanted into product along with various are solved, but on the contrary operation are caused many troubles while technology maturation with regard to Market and Technology, first product of a great variety makes to select difficulty in surgical, the more important thing is the operative failure because selecting product mistake to cause also and not within minority. Significant clinical effectiveness was all obtained such as bridge joining composite bone fracture internal fixing device (number of patent application is CN200510010654.3), clamping connection-type combined inner fixing device (number of patent application is CN201020646799.9) for the inventor of this this technology once does multinomial successful technical scheme.

Continue to use above-mentioned bridge joining composite bone fracture internal fixing device for drawback the present invention of traditional product, clamping connection-type combined inner fixing device provide brand-new solution.

Summary of the invention

The object of the present invention is intended to capture the bottleneck of current state of the art, it is provided that a kind of modular support inner fixing device. Aforesaid combination cribbing inner fixing device provides smooth hold-down bars, ring groove hold-down bars, spiral slot hold-down bars, additionally provide one or both ends flat and a pressurization hole or a lock hole or an a pressurization hole and lock hole are set, arrange one end lock hole the other end can be connected the smooth hold-down bars of hook independent assortment, ring groove hold-down bars, spiral slot hold-down bars, above technical scheme can tackle various classification of fracture and fracture site by independent assortment, the operation technique of the fracture that successfully simplifies, the union of fracture probability that improves patient.

Accompanying drawing explanation

Fig. 1 to Fig. 8 is the structural representation of modular support inner fixing device hold-down bars of the present invention;

Fig. 9 to Figure 11 is the structural representation that modular support inner fixing device of the present invention connects hook;

Figure 12 to Figure 15 is the sectional view after modular support inner fixing device of the present invention assembles;

Figure 16 is the combination schematic diagram of modular support inner fixing device of the present invention;

In modular support inner fixing device figure of the present invention:

1, ring groove (groove cambered surface) hold-down bars 2, spiral slot hold-down bars (groove cambered surface)

3, lock hole 4, pressurization hole 5, card groove 6, top wire hole

7, wear rod hole 8, connect hook 9, hold-down bars

10, jackscrew 11, screw

Principle of work

1, the feature of the present invention is: use is by a hold-down bars or multiple hold-down bars (9) and multiple inner fixed support system being connected hook (8) and corresponding jackscrew (10) and screw (11) assembly and become, to adapt to dissimilar fracture.

2, feature of present invention is: the lock hole (3) of hold-down bars (9) both ends or one end and pressurization hole (4), can obtain fracture site pressurization, anti-rotation, resistant to separation and incompressible function through inserting lock screw or plain screw.

3, feature of present invention is: when the card groove (5) that single rod connects hook (8) blocks into hold-down bars, it is screwed into jackscrew (10), jackscrew (10) head end is made to extrude the groove cambered surface (1 of hold-down bars with the angle set, 2), to obtain the effect that anti-rod slides and rotates with control rod, lock screw forms, after inserting, the shelf structure locking and being connected with rod hook nail three simultaneously.

4, feature of present invention is: the excellent hole that two rod connects hook one end is worn into hold-down bars, the other end card groove card enters another hold-down bars, and tighten jackscrew and rod is locked, rod is locked at screw hole and the groove position of rod hole crossover sites extruding hold-down bars or hold-down bars by the hold-down bars of rod nose end by the head of a nail of lock screw. Two rod connects the shelf structure that hook, two rod and lock screw three form locking and connect.

5, the feature of the present invention is: when using single rod fixing, its pressurization hole, hold-down bars two ends or lock hole insert lock screw or plain screw, and enter multiple single rod at rod body card and connect hook, complete single bar system inner fixed support after tightening jackscrew and being screwed into lock screw or plain screw.

6, patent characteristic of the present invention is: when using many rods fixing, its pressurization hole, hold-down bars both ends or one end or lock hole insert lock screw or plain screw, again the excellent hole that two rod connects (at least 2) hook is worn into another root hold-down bars, and card groove card enters to put the hold-down bars of screw, tighten jackscrew and insert lock screw or plain screw, it is achieved many bar systems inner fixed support.

Above-described specific embodiment, only to set forth for the purpose of the technical program, it is not limited to the present invention, any utilize the technology contents of above-mentioned announcement to make a little change or be modified to the equivalent embodiment of equivalent variations, all still belong in the scope of technical solution of the present invention.

Claims

1. a modular support inner fixing device, comprise and connect hook, hold-down bars and screw composition, it is characterized in that: described holder device principal plane at least arranges a hold-down bars and a connection hook, it is perpendicular on principal plane and a screw hole and top wire hole are at least set, described connection hook groove cambered surface or connection hook circular rod hole cambered surface match with hold-down bars cambered surface, match with groove or the surface on hold-down bars surface in screw cap and jackscrew front end.

2. combination inner fixed support device as claimed in claim 1, it is characterized in that: described connection hook connects hook for single rod and two rod connects hook, and screw hole and top wire hole it is provided with in vertical plane, it is provided with internal thread, and locking screw thread and jackscrew screw thread with lock screw matches respectively in its screw hole and top wire hole; Screw hole is for being perpendicular to principal plane; Top wire hole and principal plane have at least an angle change.

3. modular support inner fixing device as claimed in claim 2, is characterized in that: described single rod connection hook is perpendicular to principal plane and at least arranges a screw hole, is open card groove, and hook groove cambered surface matches with hold-down bars cambered surface;Two rod connection hook is perpendicular to principal plane and at least arranges a screw hole, one end is open card groove, and hook groove cambered surface matches with hold-down bars cambered surface, and the other end is closed circle rod hole, and closed circular hole intersects with screw hole local, screw cap extruding hold-down bars when screw is screwed into screw hole; Hold-down bars is worn into closed circle rod hole and is matched with it.

4. modular support inner fixing device as claimed in claim 2, is characterized in that: described in be perpendicular to single rod and connect the top wire hole radial opening groove of hook principal plane and have certain angle, jackscrew is screwed into, and its front end contacts with hold-down bars surface; The described top wire hole radial opening groove being perpendicular to two rod and connecting hook principal plane, jackscrew is screwed into, and its front end contacts with hold-down bars surface.

5. built-up type inner fixing device as described in claim 2 and 4, is characterized in that: described lock screw is by the head of a nail, locking screw thread and inserts screw thread and forms; Described jackscrew is external thread structure, coordinates with the top wire hole being connected hook, extruding hold-down bars surface, its termination when being screwed into.

6. modular support inner fixing device as claimed in claim 2, is characterized in that: described screw and jackscrew cap end are plum blossom groove and match with plum blossom crewdriver attachment.

7. modular support inner fixing device as claimed in claim 1, it is characterized in that: the hold-down bars of described holder device at least one end flat and arrange at least one lock hole or pressurization hole, lock hole has internal thread and lock screw thread fit, and pressurization hole is that Long Circle hole and plain screw cap match; Hold-down bars surface is evenly distributed with ring groove or spiral slot, matches with working face under screw cap, to prevent screw slides on principal plane; Ring groove hold-down bars cross section is closed circle, and volution hold-down bars cross section is that opening is circular.