CN101411640B

CN101411640B - Hook plate device for fixing acromicroclavicular joint

Info

Publication number: CN101411640B
Application number: CN2008101592491A
Authority: CN
Inventors: 王建华; 朱喆; 陈印明; 李学举
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-11-26
Filing date: 2008-11-26
Publication date: 2010-10-13
Anticipated expiration: 2028-11-26
Also published as: CN101411640A

Abstract

The invention relates to a coracoclavicular hook plate fixer having the advantages of small postoperative omalgia, difficulty in unhooking and difficulty in causing stress fracture. The coracoclavicular hook plate fixer comprises a clavicular steel plate, wherein the clavicular steel plate comprises a clavicular plate which is provided with two fixing holes; one end of the clavicular plate is connected with a connecting arm the other end of which is connected with a right-angled arm; the right-angled arm is provided with a screw hole; the clavicular plate, the connecting arm and the right-angled arm are integrated into an overall structure, and the sagittal cross section of the overall structure takes the shape of a 'Z'; an internally threaded internal hexagonal nut is arranged inside the screw hole; and a coracoid hook is in threaded connection with the internally threaded internal hexagonal nut and takes the shape of a 'J'; and the tail end of the coracoid hook is provided with threads. The coracoclavicular hook plate fixer is combined with the MIPPO technology to treat dislocation of the acromioclavicular joint, obtains maximum balance between stability and micromotion with minimum hurt, avoids the potential defects of the clavicle hook steel plate, reduces generation of complicating diseases as possible, has small postoperative omalgia, and is difficult to unhook and cause stress fracture.

Description

Hook plate device for fixing acromicroclavicular joint

Technical field

The present invention relates to a kind of medical apparatus and instruments, relate in particular to a kind of hook plate device for fixing acromicroclavicular joint.

Background technology

At present, AO clavicle hook plate and supporting with it operating theater instruments are researched and developed by AO company, special is that acromioclavicular joint dislocation and clavicle far-end fixation of fractures are designed, it can not only recover the dissection corresponding relation of acromioclavicular joint, for providing, organization healing stablizes tension-free environment, improve the ligament healing quality, and inside-fixture is without articular surface, operation destroys little, in effectively fixing dislocation, it is inherent to allow acromioclavicular joint to keep, physiological fine motion makes the patient just can meet the shoulder joint activity of physiological status in early days, helps the functional rehabilitation that postoperative is suffered from shoulder, reduce the generation of complication, this is the outstanding advantage of clavicle hook plate.But in clinical use AO clavicle hook plate also objective reality significantly not enoughly, mainly show the following aspects:

1, postoperative shoulder pain, its reason is too small with bump syndrome, clavicle damaged by hooks wound shoulder sleeve and clavicle hook hook end and acromion contact area, and stress is too concentrated relevant.

2, break off relations: when acromioclavicular joint dislocation or clavicle far-end fracture reset, need the clavicle that upwarps is pressed down, it is big more to press down strength, be delivered to the acromion steel plate hook to upwarp strength big more, and the interaction force between this steel plate hook and the acromion will long-term existence, wearing and tearing, absorption, loose more or less must appear in the sclerotin below the corresponding acromion, and severe patient causes acromion fracture, and steel plate hook is deviate from.

3, stress fracture: acromioclavicular joint belongs to amphiarthrosis, and can make scapula center on this point has certain mobility, thereby has enlarged the shoulder joint range of activity.Because the hook end of steel plate is placed on the acromion back lower place securely, near-end presses down steel plate and clavicle is close to, and the stress that produce this moment can make on the acromion to be lifted, and the stress that produces when postoperative is movable can conduct to clavicle along steel plate by acromion.The existence of this leverage makes the most inboard 1 piece of screw place of steel plate have the bigger stress that upwards lifts, and is positioned at steel plate and bone intersection, so locate a little less than the relative thin, the prolonged and repeated slightly power of causing injury causes stress concentration, finally fractures.

Summary of the invention

The purpose of this invention is to provide the hook plate device for fixing acromicroclavicular joint that a kind of postoperative shoulder pain is little, be difficult for breaking off relations, being difficult for causing stress fracture.

For achieving the above object, the technical solution used in the present invention is:

A kind of hook plate device for fixing acromicroclavicular joint, comprise the clavicle steel plate, it is characterized in that: the clavicle steel plate comprises the clavicle plate, have two fixing holes on the clavicle plate, clavicle plate one end is connected with linking arm, and the linking arm other end is connected with right angle arm, has a screw hole on the right angle arm, clavicle plate, linking arm, right angle arm are an overall structure, and its sagittal cross sectional shape is " Z " font; Be provided with six rib nuts in the internal thread in the screw hole, six rib nut inner threads are connected with the processus coracoideus hook in the internal thread, and the processus coracoideus hook is " J " font, and processus coracoideus hook tail end is threaded.

The present invention is in conjunction with MIPPO technology treatment acromioclavicular joint dislocation, obtain balance between the maximum stable and fine motion with the wound of minimum, avoid the potential weak point of clavicle hook plate, reduce the generation of complication as far as possible, the postoperative shoulder pain is little, be difficult for breaking off relations, be difficult for causing stress fracture.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of clavicle steel plate among Fig. 1;

Fig. 3 is the structural representation of the interior six rib nuts of internal thread among Fig. 1;

Fig. 4 is the structural representation of processus coracoideus hook among Fig. 1.

In the accompanying drawing:

1, six rib nuts in clavicle plate 2, linking arm 3, right angle arm 4, the internal thread

5, processus coracoideus hook 6, fixing hole 7, screw hole

The specific embodiment

Below in conjunction with the drawings and specific embodiments the present invention is further described:

A kind of hook plate device for fixing acromicroclavicular joint, as shown in Figure 1, comprise clavicle steel plate (referring to Fig. 2), the clavicle steel plate comprises clavicle plate 1, has two fixing holes 6 on the clavicle plate 1, and clavicle plate 1 one ends are connected with linking arm 2, linking arm 2 other ends are connected with right angle arm 3, have a screw hole 7 on the right angle arm 3, clavicle plate 1, linking arm 2, right angle arm 3 are an overall structure, and its sagittal cross sectional shape is " Z " font; Be provided with six rib nuts 4 (referring to Fig. 3) in the internal thread in the screw hole 7, six rib nuts, 4 female threads are connected with processus coracoideus hook 5 (referring to Fig. 4) in the internal thread, and processus coracoideus hook 5 is " J " font, and processus coracoideus hook 5 tail ends are threaded.

Embodiment recited above is described preferred implementation of the present invention; be not that design of the present invention and scope are limited; under the prerequisite that does not break away from design concept of the present invention; common engineers and technicians make technical scheme of the present invention in this area various modification and improvement; all should fall into protection scope of the present invention; the technology contents that the present invention asks for protection all is documented in claims.

The present invention is made up of 3 major parts: six rib nuts in clavicle steel plate, processus coracoideus hook and the internal thread, introduce respectively below:

1, clavicle steel plate: this steel plate sagittal plain cross section is " Z " font, comprise clavicle plate, linking arm and right angle arm 3 parts, two fixing holes are arranged on the clavicle plate, the screw hole (screw hole can be made hemisphere face groove or six prismatic grooves) that is fit to implant six rib nuts in the internal thread is arranged on the right angle arm, steel plate is in order to fix and to press down clavicle, recover acromioclavicular joint the dissection corresponding relation, stablize tension-free environment for organization healing provides, can improve the ligament healing quality.The design of clavicle plate is changeable, and weak point person is applicable to acromioclavicular joint dislocation, and the elder is applicable to the patient who merges the clavicle fractured near end.

2, processus coracoideus hook: the processus coracoideus hook is " J " font, and its tail end is threaded, and can link to each other with the right angle arm of clavicle steel plate by six rib nuts in the internal thread.Tangle processus coracoideus by the processus coracoideus inner edge to outer rim during operation, the power that lifts that the processus coracoideus hook relies on acromioclavicular joint dislocation or external extremity of clavicle fracture os postclavicalis near-end to make progress is connected with processus coracoideus, thereby allows between processus coracoideus hook and the processus coracoideus multidirectional fine motion is arranged.The bar portion of beak latch hook can increase active joint, and with the operation in the convenient operation, the end of beak latch hook can design spherical in shape, to reduce the incidence rate of injured blood vessel nerve in the operation.

3, six rib nuts in the internal thread: be connected and fixed for clavicle steel plate and processus coracoideus hook provide.Six rib nut tail medicated caps can be designed to six rib types in the internal thread, and can be absorbed in the groove of its six prismatic after the right angle arm of clavicle steel plate is connected, and have certain anti-back silk function; Six rib nuts can be designed to the total length screw thread in the internal thread, the tail end of processus coracoideus hook can spiral shell to exceeding the interior six rib nut tail medicated caps of internal thread, to produce enough plus-pressures.

The present invention is mainly used in treatment shoulder lock abarticulation or clavicle outboard end fracture, and it has the following advantages:

1, meets anatomic characteristic between clavicle, the processus coracoideus, clavicle is shifted forward after fixing, do not change clavicle, processus coracoideus and shoulder original relative position, peak and physiological structure;

2, the operation otch is littler, and wound is little, is convenient to patient and recovers;

3, fixation is stable, is difficult for breaking off relations, and allows patient's early functional exercise;

4, do not disturb the structure of shoulder lock periarticular, the incidence of shoulder pain after the reduction art;

5, be flexible fastening between processus coracoideus hook and the processus coracoideus, allow multidirectional fine motion under the tension-free condition of ligament between clavicle and the acromion.

Claims

1. hook plate device for fixing acromicroclavicular joint, comprise the clavicle steel plate, it is characterized in that: the clavicle steel plate comprises clavicle plate (1), have two fixing holes (6) on the clavicle plate (1), clavicle plate (1) one end is connected with linking arm (2), and linking arm (2) other end is connected with right angle arm (3), has a screw hole (7) on the right angle arm (3), clavicle plate (1), linking arm (2), right angle arm (3) are an overall structure, and its sagittal cross sectional shape is " Z " font; Be provided with six rib nuts (4) in the internal thread in the screw hole (7), six rib nut (4) female threads are connected with processus coracoideus hook (5) in the internal thread, and processus coracoideus hook (5) is " J " font, and processus coracoideus hook (5) tail end is threaded.