CN102670291A - Inferior tibiofibular bolt elastic fixing device - Google Patents

Abstract

The invention relates to an inferior tibiofibular bolt elastic fixing device, which comprises an elastic rod, cones arranged at both ends of the elastic rod, a connecting rod and a nut, wherein the cones are vertical to the elastic rod; one end of the connecting rod is fixedly connected with the middle part of the elastic rod while the other end of the connecting rod is provided with an external thread part; and the nut is screwed with the external thread part. With the adoption of the structure, when the inferior tibiofibular bolt elastic fixing device is used, a tunnel is drilled through the middle of the tibiofibula by a drill, the connecting rod passes through the tunnel, and the external thread part of the connecting rod is screwed with the nut; and tips of the cones on the elastic rod are embedded into the tibia to different extents, so that over-shift front and back and up and down of the tibiofibula and loss of reset are avoided. The surgical procedure is not only minimally invasive, but also has great value for improving the surgical quality, shortening the surgical time, reducing the intraoperative hemorrhage and shortening the postoperative rehabilitation periods of a patient.

Description

A kind of lower tibiofibula bolt elastic fixing device

Technical field

The present invention relates to a kind of medical treatment device, especially lower tibiofibula is united the fine motion fixture of healing.

Background technology

In daily production, life; Can cause simple wound of lower tibiofibula associating or associated injury in the time of usually can comprising motion because of contingency; The domestic fixing main lower tibiofibula screw that uses so exists certain drawback such as screw loosening, fracture, promptly need take out screw to avoid screw extraction etc. before especially foot is walked down; And screw fixedly is unfavorable for the reparation of the physiological healing characteristic of ligament own; Only flexible fine motion is fixing just to reach this purpose, so began to turn to the fixed development of elasticity fine motion abroad in recent years, domestic also touching used and design.At present existing elasticity fine motion technique for fixing: there is displacement to a certain degree in the predictable weak point of first kind stitching thread (Suture) compression device on front and back or above-below direction; There is report lower tibiofibula possibly occur abroad and unites to reset and lose, cause shakiness thereby influence the ligament healing to a certain extent.And the present price of this button stitching thread suit is more expensive, to ordinary populace popularization shortcoming, so still be fixed as main flow market with os integumentale screw; Second type: with the shackle is agent structure, though the lower tibiofibula shackle has certain elasticity, meets B&J flexible fastening biology principle, and this apparatus structure and shackle are fixing and remove all inconvenience of operation, and skin incision is bigger, uses few clinically.To these shortcomings; The purpose of this device invention is exactly to design the fine motion flexible fastening that can avoid lower tibiofibula to unite resetting and lose, and the elasticity fine motion can make the ligament healing of damage be the accordance with physiology mass property, satisfies the drawback of the taking-up that need not before foot is walked down to perform the operation; Low price; Popular acceptance, but popularization had, and satisfy the simple principle of operation technique.。

Summary of the invention

The objective of the invention is: a kind of lower tibiofibula elastic fixing device is provided; It has the B&J of meeting flexible fastening biology principle, the drawback that needs operation to take out before avoiding foot to walk down, low price; Have and install and remove conveniently, the characteristics of skin incision Wicresoft.

The present invention is achieved in that a kind of lower tibiofibula bolt elastic fixing device, and its special different part is: comprise elastic rod, be arranged on cone, connecting rod and the nut at elastic rod two ends;

Said cone is vertical with elastic rod, and said connecting rod one end is fixedly connected with the middle part of elastic rod, the other end is provided with external thread part; Said nut and external thread part screw togather.

Described a kind of lower tibiofibula bolt elastic fixing device, its special character is: also comprise a pad, said pad is arranged on the external thread part, and pad one end face cooperates with the end face of an end of nut.

Described a kind of lower tibiofibula bolt elastic fixing device, its special character is: said pad is fixedly connected with nut one end and one-body molded processing, the other end rounding of nut.

Described a kind of lower tibiofibula bolt elastic fixing device, its special character is: the other end rounding of said nut.

Described a kind of lower tibiofibula bolt elastic fixing device, its special character is: said cone is triangular taper or four awl prismatics.

Described a kind of lower tibiofibula bolt elastic fixing device, its special character is: there is boss said elastic rod and cone junction, and said boss is towards nut.

Described a kind of lower tibiofibula bolt elastic fixing device, its special character is: there is block plate at the middle part of said elastic rod, and connecting rod is fixedly connected with block plate.

A kind of lower tibiofibula bolt of the present invention elastic fixing device owing to adopt such structure, during use, connects the tunnel with drill bit in the middle of tibiofibula, connecting rod passes through tunnel, and the external thread part and the nut of connecting rod screw togather; The tip of two cones on the elastic rod embeds in the tibia to some extent; Can avoid the displacement of tibiofibula front and back or above-below direction too much, reset and lose; Operation technique is Wicresoft but also simple not only, to improving the operation quality, shortens operating time; Reduce intraoperative hemorrhage, the patients ' recovery cycle has great value after the desmopyknosis.

Description of drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is the front view of user mode of the present invention.

The specific embodiment

Below in conjunction with accompanying drawing the present invention is further described.

As shown in Figure 1, a kind of lower tibiofibula bolt elastic fixing device, it compriseselastic rod 1, is arranged on thecone 2 atelastic rod 1 two ends, connectingrod 3 andnut 4;

Saidcone 2 is vertical withelastic rod 1, and said connectingrod 3 one ends are fixedly connected with the middle part ofelastic rod 1, the other end is provided withexternal thread part 31; Saidnut 4 screws togather with external thread part 31.There isblock plate 11 at the middle part of saidelastic rod 1, and connectingrod 3 is fixedly connected withblock plate 11.

Also comprise a pad 5, said pad 5 is arranged on theexternal thread part 31, and pad 5 one end faces cooperate with the end face of an end ofnut 4.

Said pad 5 is fixedly connected withnut 4 one ends and one-body molded processing, the other end rounding 41 ofnut 4.

Saidcone 2 is triangular taper, four awl prismatic, pentagonal pyramid shape or taper shapes.

Saidelastic rod 1 has boss 6 withcone 2 junctions, and said boss 6 is towardsnut 4.

The present invention in use, and is as shown in Figure 2, in the middle of tibiofibula, makes a call to a perforation tunnel from the fibula outside to the tibial medial direction with bit bore earlier, passes through tunnel in connectingrod 3 outside from the tibial medial to the fibula, and the external thread part and the nut of connectingrod 3 screw togather.Cone 2 heads slowly insert in thetibia 7, play anti-rotation and Stabilization, along with nut is tightened; Becausetibia 7 inner surfaces are inclined-planes, far-end is thick, and thecone 2 of far-end 71contacts tibia 7 inboards earlier and inserts sclerotin; It is curved thatelastic rod 1 begins to become, andtibia 7 surfaces are close on the plane of boss 6 then.The design of boss 6 can provide certain elasticity for elasticrod.Block plate 11 can increase the intensity that contacts of stability and elastic rod also along with the propelling of screw rod can get into the tunnel with screw rod simultaneously, andelastic rod 1 possible in the time of can avoiding elasticity fine motion repeatedly to a great extent ruptures, and can lay the groundwork for the elasticity fine motion on the other hand.Along with nuttighten tibia 7 inner surfaces produce when the ankle joint flexion and extension the responsive to axial force of screw rod under the distal side of contactresilient bar 1 and connectingrod 3 junctions basically; Its proximal lateral is becausetibia 7 surfaces become diagonal and connecting rod to form an angle; One fixed gap is arranged; Thecone 2 of near-end 72 that comprises opposite side is because to receive the pulling force of screw rod basically big not as thecone 2 of far-end 71; Only few part is inserted sclerotin, has reserved certain space, can realize the elasticity fine motion when so far this device is for ankle joint activity in the future.At lastexternal thread part 31 is exposed the external thread part screw rod amputation offibula 8 outside nuts.

Wherein the thickening of boss 6 can have certain gap withtibia 7 surfaces, has both supplied certain oligodynamics, also provides convenience for the taking-up of day posterior pyramids.

Above-described only is preferential embodiment of the present invention.Should be pointed out that for the person of ordinary skill of the art under the situation that does not break away from the principle of the invention, can also make some improvement and modification, this also is regarded as protection scope of the present invention.

Claims (7)

1. lower tibiofibula bolt elastic fixing device is characterized in that: comprise elastic rod, be arranged on cone, connecting rod and the nut at elastic rod two ends;

Said cone is vertical with elastic rod, and said connecting rod one end is fixedly connected with the middle part of elastic rod, the other end is provided with external thread part; Said nut and external thread part screw togather.

2. a kind of lower tibiofibula bolt elastic fixing device according to claim 1, it is characterized in that: also comprise a pad, said pad is arranged on the external thread part, and pad one end face cooperates with the end face of an end of nut.

3. a kind of lower tibiofibula bolt elastic fixing device according to claim 2 is characterized in that: said pad is fixedly connected with nut one end and one-body molded processing, the other end rounding of nut.

4. a kind of lower tibiofibula bolt elastic fixing device according to claim 2 is characterized in that: the other end rounding of said nut.

5. according to claim 1,2,3 or 4 described a kind of lower tibiofibula bolt elastic fixing devices, it is characterized in that: said cone is triangular taper or four awl prismatics.

6. according to claim 1,2,3 or 4 described a kind of lower tibiofibula bolt elastic fixing devices, it is characterized in that: there is boss said elastic rod and cone junction, and said boss is towards nut.

7. according to claim 1,2,3 or 4 described a kind of lower tibiofibula bolt elastic fixing devices, it is characterized in that: there is block plate at the middle part of said elastic rod, and connecting rod is fixedly connected with block plate.

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