CN101474092A

CN101474092A - Cross locking marrow nail for collarbone

Info

Publication number: CN101474092A
Application number: CNA2008100322086A
Authority: CN
Inventors: 罗轶
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-02
Filing date: 2008-01-02
Publication date: 2009-07-08

Abstract

The invention relates to an interlocking intramedullary nail of the clavicule, comprising a main nail (6). The two ends thereof have the same structure and are respectively provided with a U-shaped groove (1) and an internal thread (2) and can be connected with a choke plug (4) or a pointing mounting device (7) so as to prevent the nail body from rotating and be convenient to firm connection; a screw hole (3) is respectively arranged at the position which is 10mm far from the two ends of the nail body and the two ends of the nail body can pass through a locking nail (5) and then are fixed with the clavicule. The interlocking intramedullary nail of the clavicule has the advantages that the characteristics that the clavicule is a bending long bone with the S shape are grasped; the main nail is completely arranged in the clavicule at the reamed opening of the inner end and the outer end of the clavicule; the structures of the two ends of the intramedullary nail are same, are respectively provided with the U-shaped groove and the internal thread, can be respectively connected with the pointing mounting device and is convenient to mount locking nails, thus avoiding the problems that the pointing device arranged at the proximal end can not lock the far end accurately; the main nails is completely arranged in the clavicule, thus further avoiding the stimulation to surrounding soft tissues.

Description

Cross locking marrow nail for collarbone

Technical field

The present invention relates to a kind of clavicle stage casing bone fracture internal fixing device is cross locking marrow nail for collarbone.

Background technology

The anatomical features of clavicle is: clavicle is the long bone of S sigmoid, outboard end or acromial end are coarse and flat wide, and end has the oval articular surface outwards down, is called articular facet of acromion, join with the acromion of scapula, the centre is body of clavicle, and cylindrical and the narrowest, medial extremity or sternal end are the thickest, its terminal approximate prismatic, before having the inside below of articular surface also inclined to one side slightly, be called sternal articular facet, with presternal clavicular notch associated section.From the appearance, clavicle medial part curvature is protruding to the front side and slightly partially, medial part accounts for total length 2/3～3/4, the blunt circle in leading edge middle part, front and rear edge constitutes the forward and backward boundary of sulcus for subclavian artery respectively, and following inboard is called impressiones ligamenti costoclavicularis by the oval asperities, has costoclavicular ligament to adhere to, there is shallow groove in the following outside, has subclavius to adhere to; The lateral part curvature is protruding to account for 1/3～1/4 of total length to rear side, the sharp thin depression of leading edge, the coarse depression of trailing edge, below one tuberosity is arranged near the trailing edge place, be called coracoid tuberosity, have coracoclavicular ligament to adhere to, from tuberosity the thick line of foreign side is forward arranged, have trapezius muscle adhere to (Guo Shifu. clinical orthopaedics anatomy. the 1st edition, Tianjin science tech publishing house, 1998:361).

Clavicular fracture is one of modal bone injury, about 70%～80% occurs in clavicle stage casing (KocherMS, Waters PM, Micheli LJ.Upper extremity injuries in the paediatricathlete.Sports Med, 2000,30:117-135).Studies show that recently after the eliminating child fracture, clavicle stage casing fracture expectant treatment nonunion incidence rate is up to 15%, and 30% patient is dissatisfied to final curative effect.More and more evidences shows: during the malunion of fracture of clavicle stage casing, influence the tension force and the balance of muscle tendon because the coronalplane clavicle shortens, thereby influence upper limbs force.It is uncomfortable that the patient feels deeply, usually feels to go up myasthenia of limbs, fatiguability, pain.Progress along with society, people are to function and attractive in appearance higher requirement arranged, require simultaneously to reduce injured back misery and shorten treatment time, and along with the development of internal fixation technology and the renewal of medical science viewpoint, many scholars have proposed new knowledge to clavicular fracture, the satisfaction that resets of clavicular fracture operative treatment, internal fixation is reliable, and can early functional exercise.Because can early functional exercise, so that the shoulder joint movable function recovers is fast, can avoid occurring amyotrophy, ligament contracture and ankylosis, especially the gerontal patient is difficult for taking place ankylosis, patients ' life quality raising, satisfaction rate height.Therefore, clavicular fracture operation indication progressive relaxation, operative therapy is also more and more accepted by people.

The subject matter of clavicular fracture operative treatment is: reconstruction plate possess general steel plate on its XY axle, reverse with the RS axle on bending outside, can be at short PQ bending shaft (Rong Guowei, Zhai Guihua, Liu Yi, Deng translating. the orthopaedics internal fixation. the 3rd edition. Beijing: People's Health Publisher, 1995:148-151), like this can be fully to carry out steel plate according to the irregular profile of clavicle moulding, make steel plate can be close to an interface and a tension band fixed effect,, reach reliable internal fixation effect with to resistant to bending stresses and revolving force, so reconstruction plate fixedly clavicular fracture to have an internal fixation firm, postoperative need not add uses external fixation, is beneficial to wound healing, advantages such as morning functional exercise time.But, reconstruction plate fixing operation wound takes out inside-fixture owing to needing operation once more greatly, local fracture end exposure range is big, periosteum stripping is extensive, and particularly comminuted fracture more increases the weight of periosteum stripping after steel wire or silk thread colligation, influences blood supply and causes nonunion.

Osseous pin internal fixation operation otch is little, periosteum stripping is few, operation technique is simple, meet the minimally-invasive treatment principle.But along with the complication in the treatment clinical course increases and is negated gradually, its can not effectively control the fracture rotary moveable (Huang Qiuhua. the reason and the prevention of the slippage of clavicle displacement fracture marrow internal fixation osseous pin. B﹠J damage magazine .1996:11 (1): 29).Behind the common osseous pin internal fixation of one side clavicular fracture, rotation, separation, shearing iso-stress that fracture end brings when still suffering upper limb movable, osseous pin is loosening easily, sliding and fatigability outward fractures; The normal healing of the unstable directly influence fracture of fracture end influences outward appearance even causes bone does not connect and the callus hyperplasia occurs on the other hand, often needs external fixation to strengthen, and loses the meaning of operation like this.

Summary of the invention

It is cross locking marrow nail for collarbone that the technical issues that need to address of the present invention have provided a kind of clavicle stage casing bone fracture internal fixing device, is intended to solve above-mentioned defective.

In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:

The present invention includes a main nail, its two-end structure is identical, and U type groove and female thread are all arranged, can with silently or the aiming erecting device be connected, anti-non-magnetic shim body rotation is convenient to connect firm;

The screw of one diameter 2.0mm is arranged respectively apart from each 10mm place at main ailing body two ends, can pass pinning and the clavicle of diameter 1.8mm and fix;

Compared with prior art, the invention has the beneficial effects as follows: having grasped clavicle is the characteristics of S sigmoid long bone, to lead nail at the inside and outside both ends open expansion of clavicle marrow places in the clavicle fully, it is identical that the interlocking intramedullary nail master follows closely two-end structure, U type groove and female thread are all arranged, all can be connected, be convenient to install pinning, thereby avoid near-end that the problem that the sighting device far-end can not accurately lock is installed with the aiming erecting device; Main nail places the stimulation of also having avoided in the clavicle surrounding soft tissue fully.After interlocking intramedullary nail and clavicle are fixing, form a complete stable frame structure, limited one-tenth angle, cripetura, separation and the rotation displacement of fracture end; Avoided osseous pin fixedly to be prone to pin slippage, prick skin, fixing shortcoming such as unreliable, avoided also that steel plate internal fixation otch is big, periosteum stripping is many, hemorrhage many and have internal fixation screw may damage the shortcoming of blood vessel under the clavicle, nerve; Operation back cicatrix is little, good looking appearance, and patient is acceptant.

Description of drawings

Fig. 1 is master's TV structure figure of the present invention;

Fig. 2 is plan structure figure of the present invention;

Fig. 3 be fixing interlocking intramedullary nail silently;

Fig. 4 is the fixing interlocking intramedullary nail pinning;

Fig. 5 is an interlocking clavicle intramedullary needle tool coating figure;

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail:

By Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 as seen:

The present invention includes a main nail 6., its two-end structure is identical, all have U type groove 1. with female thread 2., can with silently 4. or the aiming erecting device 7. be connected, anti-non-magnetic shim body rotation is convenient to connect firm;

3. the screw that one diameter 2.0mm arranged respectively apart from each 10mm place that 6. main nail follows closely the body two ends can pass the pinning of diameter 1.8mm and 5. fix with clavicle;

6. described main nail is the circular metal body, and diameter is between 4mm-8mm, and length is between 60mm-150mm; Intramedullary pin pinning 5. near-end has screw thread, and diameter is 1.8mm, and length is between 10～30mm;

Fig. 5 shows instrument (aiming erecting device) assembling process in the clavicle intramedullary femoral nailing;

When 1/3 fracture operation is operated in the clavicle, cut a little otch earlier at the fracture line place, hole to near-end by fracture end with the screw thread drill bit, and near the inboard S shape of clavicle bending part, get out cortical bone, and cut an osculum in skin herein, withdraw from drill bit, reuse screw thread drill bit is holed to far-end by fracture end, and near the S shape bending part of the clavicle outside, get out cortical bone, and cut an osculum in skin herein, withdraw from drill bit.With the reduction of the fracture, fix with reduction forceps, reuse one long drill bit from the inboard little incision squeeze into drill bit, S shape bending part gets out cortical bone in the clavicle outside, withdraws from drill bit, select suitable the present invention, little incision is inserted main nail from the inboard, and the interface that will lead nail respectively at the little incision in medial and lateral is connected with the aiming erecting device then, respectively boring installation lock screw, intramedullary pin is installed silently respectively at main nail two ends at last, the present invention installs.

Claims

1. a clavicular fracture inner fixing device is a cross locking marrow nail for collarbone, it is characterized in that: comprise a main nail 6., its two-end structure is identical, all have U type groove 1. with female thread 2., can with silently 4. or the aiming erecting device 7. be connected, anti-non-magnetic shim body rotation is convenient to connect firm.

2. cross locking marrow nail for collarbone according to claim 1 is characterized in that: 3. the screw that a diameter 2.0mm arranged respectively apart from each 10mm place that 6. main nail follows closely the body two ends can pass the pinning of diameter 1.8mm and 5. fix with clavicle.

3. cross locking marrow nail for collarbone according to claim 1 and 2 is characterized in that: 6. described main nail is the circular metal body, and diameter is between 4mm-8mm, and length is between 60mm-150mm; Cross locking marrow nail for collarbone pinning 5. near-end has screw thread, and diameter is 1.8mm, and length is between 10～30mm.