CN204446067U

CN204446067U - Modular support inner fixing device

Info

Publication number: CN204446067U
Application number: CN201420697965.6U
Authority: CN
Inventors: 不公告发明人
Original assignee: 熊鹰
Current assignee: Yunnan Europe's Medical Technology Co., Ltd.
Priority date: 2014-11-20
Filing date: 2014-11-20
Publication date: 2015-07-08
Anticipated expiration: 2024-11-20

Abstract

The utility model discloses a kind of modular support inner fixing device, comprise hold-down bars, butt hook, jackscrew and screw.It is characterized in that described hold-down bars surface uniform is distributed with cannelure or helicla flute, and its both ends or one end head plat part is provided with at least one lock hole or pressurization hole, butt hook is single excellent butt hook and double stick butt hook, its single excellent butt hook is an opening draw-in groove, its principal plane is at least arranged a lock hole and a top wire hole, double stick butt hook is an opening draw-in groove and a circular rod hole, its principal plane is at least arranged a lock hole and a jackscrew.The butt hook device of this utility model is the grab groove of opening, free each other group of screw, butt hook and hold-down bars is facilitated to connect and form center rest device, being conducive to that sclerite reset is connected to form rigid support to fix, adapting to skeleton and dissect overall structure, be conducive to union of fracture.Enhance replacement and fixation effect, expand the generation of indication and minimizing complication.

Description

Modular support inner fixing device

Technical field

This utility model relates to a kind of technical field of medical instruments, is specifically related to a kind ofly be suitable for the orthopedic sectional shelf-unit inner fixing device of skeleton under fracture condition.

Background technology

Along with the appearance of Pasteur physical sterilization, Joseph Lister in 1867 have invented chemosterilant, surgical sterilized technology obtains significant progress, for the development of orthopaedics internal fixation operation creates basic condition.Nineteen forties and the fifties, although there is some outstanding inventors and technological innovation in Fracture internal fixaiion field, for how carrying out the rule that operative treatment does not have standard.Under this historical conditions, AO group proposes the principle that fracture with compressive is fixed, the Fracture internal fixaiion techniques and methods establishing system.Products large quantities of be on this basis developed produce, various pressurization, locking, anatomical form etc. and Liss steel plate be applied to clinical, marrow nail series is also used widely simultaneously.

The birth being implanted into product along with various, clinical disease are solved, but with regard to Market and Technology, cause many troubles on the contrary while technology maturation to operation, first miscellaneous product makes to select difficulty in surgical, the more important thing is that operative failure because selecting product mistake to cause also and not within minority.Inventor for this this technology once did multinomial successful technical scheme and all obtained significant clinical effectiveness 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).

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

Summary of the invention

The purpose of this utility model is intended to the bottleneck of capturing state-of-the art, provides a kind of modular support inner fixing device.Combinations thereof cribbing inner fixing device provides smooth hold-down bars, cannelure hold-down bars, helicla flute 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 with the smooth hold-down bars of butt hook independent assortment, cannelure hold-down bars, helicla flute hold-down bars, above technical scheme by independent assortment can tackle various classification of fracture and fracture site, successfully simplify fracture operation technique, improve the union of fracture probability of patient.

Accompanying drawing explanation

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

Fig. 9 to Figure 11 is the structural representation of this utility model modular support inner fixing device butt hook;

Figure 12 to Figure 15 is the sectional view after the assembling of this utility model modular support inner fixing device;

Figure 16 to Figure 18 is the combination schematic diagram of this utility model modular support inner fixing device;

In this utility model modular support inner fixing device figure:

1, cannelure (groove cambered surface) hold-down bars 2, helicla flute hold-down bars (groove cambered surface)

3, lock hole 4, pressurization hole 5, draw-in groove 6, top wire hole

7, excellent hole 8, butt hook 9, hold-down bars is worn

10, jackscrew 11, screw

Operation principle

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

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

3, this utility model feature is: when the draw-in groove (5) of single excellent butt hook (8) snaps in hold-down bars, be screwed into jackscrew (10), make jackscrew (10) head end with the groove cambered surface (1 of the angular extrusion hold-down bars of setting, 2), to obtain the effect that anti-rod slides and control rod rotates, lock screw forms with excellent hook nail three the supporting structure locking and be connected after inserting simultaneously.

4, this utility model feature is: the excellent hole of double stick butt hook one end penetrates hold-down bars, other end draw-in groove snaps in another hold-down bars, and tighten jackscrew rod is locked, rod is locked by the groove position that the hold-down bars of excellent nose end extrudes hold-down bars or hold-down bars by the head of a nail of lock screw at screw hole and excellent hole crossover sites.Double stick butt hook, double stick and lock screw three form the supporting structure locking and be connected.

5, feature of the present utility model is: when using single rod fixing, its pressurization hole, hold-down bars two ends or lock hole insert lock screw or plain screw, and snap in the excellent butt hook of multiple list at barred body, tighten jackscrew and complete single bar system inner fixed support after being screwed into lock screw or plain screw.

6, this utility model patent characteristic 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, the excellent hole again double stick being connected (at least 2) hook penetrates another root hold-down bars, and draw-in groove is snapped in the hold-down bars putting screw, tighten jackscrew and insert lock screw or plain screw, realize many bar systems inner fixed support.

Above-described specific embodiment, only to set forth for the purpose of the technical program, be not limited to this utility model, anyly utilize the technology contents of above-mentioned announcement to make a little change or be modified to the Equivalent embodiments of equivalent variations, all still belonging in the scope of technical solution of the present invention.

Claims

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

2. combination inner fixed support device as claimed in claim 1, it is characterized in that: described butt hook is single excellent butt hook and double stick butt hook, and vertical plane is provided with screw hole and top wire hole, be provided with female thread in its screw hole and top wire hole, and match with the locking screw thread of lock screw and jackscrew screw thread respectively; Screw hole is perpendicular to principal plane; Top wire hole and principal plane have at least an angle to change.

3. modular support inner fixing device as claimed in claim 2, it is characterized in that: the excellent butt hook of described list at least arranges a screw hole perpendicular to principal plane, be opening draw-in groove, hook groove cambered surface matches with hold-down bars cambered surface; Double stick butt hook at least arranges a screw hole perpendicular to principal plane, one end is opening draw-in groove, and hook groove cambered surface matches with hold-down bars cambered surface, and the other end is closed circle rod hole, and close circular hole and screw hole localized chiasma, when screw is screwed into screw hole, screw cap extrudes hold-down bars; Hold-down bars penetrates closed circle rod hole and matches with it.

4. modular support inner fixing device as claimed in claim 2, is characterized in that: the described top wire hole radial opening groove perpendicular to single excellent butt hook principal plane also has certain angle, and jackscrew is screwed into, and its front end contacts with hold-down bars surface; The described top wire hole radial opening groove perpendicular to double stick butt hook principal plane, jackscrew is screwed into, and its front end contacts with hold-down bars surface.

5. the combination type inner fixing device as described in claim 2 or 4, is characterized in that: described lock screw is by the head of a nail, locking screw thread and insert screw thread and form; Described jackscrew is external thread structure, coordinates with the top wire hole of butt 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 Flos Mume groove and match with Flos Mume 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 is flat and arrange at least one lock hole or pressurization hole, lock hole has female thread and lock screw threaded engagement, and pressurization hole is that Long Circle hole and plain screw cap match; Hold-down bars surface uniform is distributed with cannelure or helicla flute, matches with work surface under screw cap, slides on principal plane to prevent screw; Cannelure hold-down bars cross section is closed circle, and spiral type hold-down bars cross section is that opening is circular.