CN217219168U - Clavicle distal end internal fixation device - Google Patents

Abstract

The utility model relates to a clavicle far-end internal fixation device, which comprises a locking plate body, wherein the locking plate body is provided with a body part which is in accordance with the anatomical form of the clavicle, the two ends of the body part in the length direction are respectively defined as a near end and a far end, and the near end of the body part is provided with a head part which extends to a shoulder peak; the somatic part is provided with a plurality of combination holes from its distal end to near-end direction according to the preface, all be equipped with a plurality of locking holes on the near-end of somatic part and the head, each locking hole is used for receiving a locking screw to these locking screws become the angle fixed, with the not good problem of current clavicle hook steel sheet fixed effect of solution.

Description

Clavicle far-end internal fixation device

Technical Field

The utility model relates to the technical field of medical equipment, specifically relate to a clavicle distal end internal fixation device.

Background

The fracture of the far end of the clavicle refers to a fracture disease of the outer end of the clavicle of a patient, accounts for about 15 percent of all clavicle fractures, and is affected by variable stress, broken small bone folding pieces and the like, so that the instability of the fractured end of the fracture is enhanced. At present, the patient with the clavicle far-end fracture is mainly treated by surgical operations, such as Kirschner wire fixation, hook plate internal fixation and the like.

In the past, the kirschner wire and the tension band are used for fixation in the treatment, but the far end is relatively small, so that the fixation is not firm, the fracture displacement and other conditions are easy to occur after the operation of a patient, the early functional exercise is also influenced, and the recovery of the function of the shoulder joint of the patient after the operation is not facilitated.

The clavicle hook steel plate is convenient to operate and accurate in curative effect in application, and has wide application in treatment of patients with clavicle far-end fracture. The cadre part of the traditional clavicle hook steel plate is arc-shaped and is provided with a combination hole; the wider head part is provided with two parallel combined holes, and the wider head part is fixed at the far end of the clavicle; the top is designed with a smooth and blunt sharp hook, the hook part can be directly inserted under the shoulder peak, and the steel plate is matched with a 3.5mm locking screw or a 3.5mm common cortical bone screw for fixation. The application of the clavicle hook steel plate is to realize the stable fixation of the distal clavicle fracture through the lever principle and ensure the repair and reconstruction of soft tissue ligaments of shoulder joints of patients. Compared with the traditional treatment modes such as the fixation of the Kirschner wire tension belt and the like, the fixation mode is more firm, and the postoperative complication rate such as loosening and breaking of the fixture is relatively low.

However, the existing clavicle hook steel plate structure limits the mobility of the acromioclavicular joint while antagonizing the broken end of the fracture, the insertion of the sharp hook end into the acromioclavicular not only makes the gap under the acromioclavicular narrower, the friction between the joint and surrounding soft tissues is increased during the movement, and in addition, the retention of the hook end of the clavicle hook steel plate and the stress concentration time under the acromioclavicular is long, so that the hook end and the acromioclavicular slide and rotate easily, thereby increasing the risk of the bone dissolution under the acromioclavicular during the early movement of the fracture, and therefore, the incidence of postoperative pain, acromioclavicular arthritis, acromioclavicular impact syndrome and the like is obviously improved, so the clinical curative effect is not satisfactory, and the existing steel plate is usually provided with 3.5mm locking nails or 3.5mm common cortical bone screws, the holding force on small broken bone blocks is poor, and the fixing effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a clavicle distal end internal fixation device to solve the current not good problem of clavicle hook steel sheet fixation effect.

The specific scheme is as follows:

a clavicle far-end internal fixation device comprises a locking plate body, wherein the locking plate body is provided with a body part which is in accordance with the anatomical shape of a clavicle, two ends in the length direction of the body part are respectively defined as a near end and a far end, and the near end of the body part is provided with a head part extending to a shoulder peak; the body is provided with a plurality of combining holes in sequence from the far end to the near end, the near end and the head of the body are provided with a plurality of locking holes, each locking hole is used for receiving one locking screw, and the locking screws are fixed at an angle.

Furthermore, the head part is also provided with a hook part at the end part far away from the body part, and the hook part is matched with the outer side of the acromion so as to be fixed at the outer side of the acromion.

Furthermore, the number of the hook parts is two, the two hook parts are distributed at an angle, and the included angle between the two hook parts is 25-35 degrees.

Further, the head portion has a larger width with respect to the body portion.

Further, the width of the body part is 8-10mm, and the width of the head part is 15-20 mm.

Furthermore, the locking plate body at the connecting area of the body part and the head part is thickened and widened, the thickened thickness of the locking plate body is not less than 0.5mm and not more than 2mm, and the widened width of the locking plate body is not less than 1mm and not more than 3 mm.

Further, the coupling holes are configured to allow the locking pins in the plurality of coupling holes to be angularly fixed.

Furthermore, a reconstruction groove is also arranged between two adjacent combining holes of the body part.

Furthermore, the edge of the locking plate body is also provided with a suture hole, and the suture hole is used for knotting the anchoring line after the coracoid ligament is reconstructed.

Further, the body part and the head part are both provided with Kirschner wire holes.

The utility model provides a clavicle distal end internal fixation device compares with prior art and has following advantage:

1. the utility model provides a clavicle distal end internal fixation device utilizes the sclerotin of acromion, comes as lockplate screw's anchor point, has got rid of original hook-shaped titanium plate and has need have some intrusions to position under the shoulder joint acromion to cause the limited shortcoming of the serious abduction of shoulder joint.

2. The utility model provides a lockplate of distal clavicle internal fixation device sets up in the widening of acromion part, thereby the wide but thin characteristics of make full use of acromion sclerotin put into short screw as far as possible and increase whole internal fixation system's the power of controlling.

3. The utility model provides a clavicle distal end internal fixation device considers that acromion position sclerotin is weaker, and the screw strength is not enough to confront the aversion of fracture, has add the hook portion in the acromion outside, can rely on the width of acromion to increase whole internal fixation system's intensity like this, reduces the failure rate.

4. The utility model provides a clavicle distal end internal fixation device considers itself acromioclavicular joint to be the micro-motion joint, need stride over the acromioclavicular joint, consequently strides over the regional slight thickening of joint, widens and comes the micro-motion of confrontation part, increases the local stability of fracture.

5. The utility model provides a clavicle far-end internal fixation device, which considers that the clavicle far-end fracture block is generally smaller, and the distal end of the body part and the locking screw arranged in the locking hole on the head part are fixed at an angle, so that the screw can better hold more bone tissues, thereby enhancing the mechanical strength of the whole system; some special suture holes of design in titanium plate edge are used to the anchor line knot after carrying out coracoid lock ligament reconstruction to further strengthen the mechanical strength of whole system.

Drawings

Fig. 1 shows a top view of a distal clavicular internal fixation device.

Fig. 2 shows a cross-sectional view at a-a in fig. 1.

Fig. 3 shows a side view of the internal fixation device in the distal clavicle.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

The embodiment provides a clavicle distal end internal fixation device which comprises a locking plate body 1, wherein the locking plate body 1 is usually made of a titanium alloy material, and the material has good biocompatibility and provides reliable mechanical strength. The locking plate body 1 is provided with a body part 11 which is in accordance with the anatomical form of a clavicle and can be well attached to a bone, two ends of the body part 11 in the length direction are respectively defined as a proximal end and a distal end, and the proximal end of the body part is provided with a head part 12 extending to a shoulder peak.

The body 11 has a plurality of connecting holes 13 in sequence from the distal end to the proximal end, the connecting holes 13 can be selected to be locked at an angle or to fix the fracture end by pressing, and a reconstruction slot 14 is also arranged between two adjacent connecting holes 13 of the body 11 to facilitate bending and shaping in the operation.

The proximal end of the body 11 and the head 12 are provided with a plurality of locking holes 15, each locking hole 15 is used for receiving a locking screw, and the locking screws can be fixed at an angle to achieve the best fixing holding force; and the adoption of the small-diameter screw with high density can increase the fixing effect and avoid the risk of secondary fracture caused by larger aperture after the internal fixation is taken out.

In this embodiment, the head 12 has a larger width relative to the body 11, such as 8-10mm for the body 11 and 15-20mm for the head, which makes full use of the wide but thin shoulder bone and puts as many short screws as possible to increase the holding force of the whole internal fixation system.

In this embodiment, a hook portion 16 is further disposed on the end of the head portion 12 away from the body portion 11, the hook portion 16 is disposed in cooperation with the outer side of the acromion, so that the hook portion 16 can be fixed on the outer side of the acromion, and since the bone material of the acromion is weak and the screw force is not enough to completely resist the displacement of the fracture, the hook portion 16 fixed on the outer side of the acromion can increase the strength of the whole internal fixation system depending on the width of the acromion, and reduce the failure rate. Preferably, the number of the hook parts 16 in the embodiment is two, the two hook parts 16 are arranged at an angle, and the included angle between the two hook parts 16 is 25-35 degrees, so that the hook parts 16 can have a better fixing effect.

In this embodiment, since the locking plate body 1 needs to span the acromioclavicular joint, the locking plate body 1 is slightly thickened and widened at the connection area of the body 11 and the head 12, usually the thickened thickness is not more than 2mm and the widened width is not more than 3mm, so as to increase the ability to resist the local micromotion, thereby increasing the local stability of the fracture.

In this embodiment, the edge of the locking plate body 1 is further provided with a suture hole, and the suture hole can be used for knotting an anchoring line after coracoid ligament reconstruction, so as to further enhance the mechanical strength of the whole system.

In this embodiment, both the body 11 and the head 12 are provided with K-wire holes 17 for temporary fixation of the locking plate body 1 in the surgery.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a distal clavicle internal fixation device, includes the lockplate body, its characterized in that: the locking plate body is provided with a body which is in accordance with the anatomical shape of a clavicle, two ends of the body in the length direction are respectively defined as a proximal end and a distal end, and the proximal end of the body is provided with a head part extending to a shoulder peak; the body is provided with a plurality of combining holes in sequence from the far end to the near end, the near end and the head of the body are provided with a plurality of locking holes, each locking hole is used for receiving one locking screw, and the locking screws are fixed at an angle.

2. The clavicular distal internal fixation device of claim 1, wherein: the head part is further provided with a hook part at the end part far away from the body part, and the hook part is matched with the outer side of the acromion so that the hook part can be fixed on the outer side of the acromion.

3. The clavicular distal internal fixation device of claim 2, wherein: the number of the hook parts is two, the two hook parts are arranged at an angle, and the included angle between the two hook parts is 25-35 degrees.

4. The clavicular distal end internal fixation device of claim 1, wherein: the head portion has a greater width relative to the body portion.

5. The clavicular distal internal fixation device of claim 4, wherein: the width of the body part is 8-10mm, and the width of the head part is 15-20 mm.

6. The clavicular distal internal fixation device of claim 1, wherein: the locking plate body at the connecting area of the body and the head is thickened and widened, the thickened thickness of the locking plate body is not less than 0.5mm and not more than 2mm, and the widened width of the locking plate body is not less than 1mm and not more than 3 mm.

7. The clavicular distal internal fixation device of claim 1, wherein: the coupling holes are configured to allow the locking pins within the plurality of coupling holes to be angularly fixed.

8. The clavicular distal internal fixation device of claim 1, wherein: and a reconstruction groove is also arranged between two adjacent combining holes of the body part.

9. The clavicular distal end internal fixation device of claim 1, wherein: the edge of the locking plate body is also provided with a suture hole, and the suture hole is used for knotting the anchoring line after the coracoid ligament is rebuilt.

10. The clavicular distal internal fixation device of claim 1, wherein: the body part and the head part are both provided with Kirschner wire holes.

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