CN215458392U - Bone device is got in bone grafting of femoral head necrosis ilium - Google Patents

Abstract

The utility model discloses a bone grafting and taking device for ilium with femoral head necrosis, which comprises a bone taking guide, a selectable bone taking opening and a bone taking device, wherein the bone taking guide is U-shaped and comprises a top plate and two side plates, the top plate is provided with a fixed bone taking opening, the side plates are provided with a plurality of bone cutting horizontal holes, and the side plates are also correspondingly provided with fixing holes; the selectable bone taking port is in a circular ring shape, and an outer edge is arranged on the selectable bone taking port and is used for being clamped on the fixed bone taking port; the bone taking device is integrally hollow cylindrical, scales are arranged on the edge of the bone taking device, a sharp blade is arranged at the far end of the bone taking device, and the near end of the bone taking device is connected with an electric drill; the bone extractor is accessed along the bone extraction opening. The utility model optimizes the bone taking method and the form and amount of the bone, has smaller wound to the patient, is more suitable for the patient with early femoral head necrosis and medullary core decompression, has better matching performance when the bone is implanted into the femoral head and the decompression channel, can better heal with the bone per se, and has better postoperative effect for the patient.

Description

Bone device is got in bone grafting of femoral head necrosis ilium

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a femoral head necrosis ilium bone grafting and taking device.

Background

Femoral head necrosis is a metabolic disease characterized by impaired femoral head blood supply, death of osteocytes and bone marrow components, and subsequent structural change of femoral head, collapse of femoral head, and joint dysfunction due to various reasons. According to statistics, 20000-. For patients with early femoral head necrosis, hip pain and limited movement are different in degree, and the combination of core decompression and autologous bone transplantation is an effective treatment mode for treating the early femoral head necrosis. The femoral head necrosis in the early stage can clear necrotic bone tissues in the femoral head under fluoroscopy, the femoral head decompression effect is achieved, autogenous bones are implanted from a decompression channel, the osteonecrosis area bone reconstruction effect is achieved, and the bone of the ilium of a patient is implanted into the femoral head most commonly in the operation.

At present, the traditional iliac bone grafting is used as the most common bone grafting method after decompression of a medullary core of early femoral head necrosis and is adopted by vast surgeons all the time. Taking the ilium, making an incision about 10cm long at the anterior superior iliac spine of the patient, stripping the ilium, and taking the double-cortical ilium with a osteotome. Traditional iliac bone mode of getting operation wound is great, and is great to the destruction degree of iliac, and some tendon department of attachment is got off, influences patient's low limbs function, and in addition, the bone shape of getting is not conform to the passageway of medulla core decompression, and the femoral head is planted the bone later stage effect not good enough.

The traditional femoral head core decompression ilium bone taking and grafting bone has the following three defects: first, the wound is large. The cut is large; vascular nerves around the ilium are easily damaged in the osteotomy; the surface of the bone wound left by the bone is large, and the later bleeding is more. Second, the amount of bone removed is not well controlled. The traditional bone taking method is very easy to cause the bone taking amount to be excessive, and unnecessary waste is caused. Thirdly, the obtained bone has irregular shape and needs secondary manual treatment to be used for a channel and a decompression area for femoral head core decompression. Fourthly, taking out the irregular shape of the bone area. This is not conducive to later soft tissue repair and reconstruction, and even malformation of the appearance, which can affect the appearance.

Disclosure of Invention

The utility model aims to provide a femoral head necrosis ilium bone grafting and taking device, which enables the ilium bone grafting and taking device to have smaller wound on a patient, better control of bone taking quantity, better bone taking shape and more beautiful bone taking area shape, the taken bone is implanted into a femoral head and a decompression channel, the matching performance is better, the bone can be better healed with the bone per se, and the postoperative effect of the patient is better.

In order to achieve the technical purpose, the technical scheme of the utility model is as follows:

a bone taking device for femoral head necrosis ilium bone grafting comprises a bone taking guide, a selectable bone taking opening and a bone taking device, wherein the bone taking guide is U-shaped and comprises a top plate and two side plates, the top plate is provided with a fixed bone taking opening, the side plates are provided with a plurality of bone cutting horizontal holes, and the side plates are also correspondingly provided with fixing holes;

the selectable bone taking port is in a circular ring shape, and an outer edge is arranged on the selectable bone taking port and is used for being clamped on the fixed bone taking port;

the bone taking device is integrally hollow cylindrical, scales are arranged on the edge of the bone taking device, a sharp blade is arranged at the far end of the bone taking device, and the near end of the bone taking device is connected with an electric drill; the bone extractor is accessed along the bone extraction opening.

Further, the side plate of the bone taking guide is in a ladder shape with a wide upper part and a narrow lower part.

Further, the distance between the osteotomy horizontal holes on the side plate is 5 mm.

Further, the selectable bone taking openings are arranged in a plurality of numbers, and the diameters of the selectable bone taking openings are 9mm, 8mm, 7mm, 6mm and 5mm respectively.

Furthermore, the bone taking device is divided into six types, the diameters of the six types are 1cm, 9mm, 8mm, 7mm, 6mm and 5mm in sequence, and the six types are matched with the selectable bone taking openings.

Firstly, after the ilium is exposed in the operation, the U-shaped bone taking guide is clamped into the ilium, and then the bone taking guide is fixed on the ilium through 4 fixing holes. The trapezoidal fixed plate on both sides of the bone guider is provided with a plurality of holes with the distance of 5 mm.

Secondly, get bone guide top and be the fixed bone mouth of getting of diameter 1cm, all the other optional type get the bone mouth and divide into five optional bone mouths of getting of diameter 9mm, 8mm, 7mm, 6mm and 5mm, set up the outer edge on every optional bone mouth of getting, be convenient for the card on the fixed bone mouth of getting.

And finally, the bone taking device is in a hollow cylindrical shape, scales are arranged on the edge of the bone taking device, the far end of the bone taking device is sharp, the near end of the bone taking device can be connected to an electric drill, the model can be divided into six types, and the diameters of the bone taking device are 1cm, 9mm, 8mm, 7mm, 6mm and 5mm in sequence. The bone taking device with the proper diameter is selected, the bone taking device enters along the opening of the bone taking device after being installed with an electric drill, the bone taking device enters a certain depth (the depth is selected according to the decompression of the medullary core), the proper depth is selected at the side baffle of the bone taking guide, and the ilium is cut off by a pendulum saw, so that the bone in the bone taking device can be taken out smoothly.

The wound is smaller: in the operation, the large-area stripping of soft tissues around the ilium is not needed, and only the bone taking guide is needed to be put in; the bone is cylindrical, the double-layer iliac cortex is not damaged, only a small round bone block is removed from the top, and the damage to bone is less.

The bone taking amount is better controlled: the method can accurately and strictly control the bone taking amount according to the diameter of the bone taking opening and the entering depth of the bone taking device.

The bone shape is better: the design is specially designed for marrow core decompression bone grafting of early femoral head necrosis, the shape of the bone is suitable for a channel of marrow core decompression, the bone grafting channel and a necrosis area can be directly plugged, and secondary manual processing is not needed.

The bone taking area is more beautiful in shape: the bone taking device is tightly left on the ilium to form a circular bone defect area, does not affect the appearance and the function of a patient, and is more attractive compared with the traditional method.

Compared with the prior art, the utility model has the following advantages and positive effects:

the utility model optimizes the bone taking method, the shape and the amount of the taken bone, has smaller wound to the patient, is more suitable for the patient with early femoral head necrosis and medullary core decompression, has better matching property when the taken bone is implanted into the femoral head and a decompression channel, can heal with the bone per se better, and has better postoperative effect for the patient.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic structural view of a bone-taking guide in an embodiment of the iliac bone grafting and taking device for femoral head necrosis of the utility model;

FIG. 2 is a schematic view of the structure of an alternative bone access opening;

FIG. 3 is a schematic structural view of the bone extractor;

symbols in the drawings and description thereof: 10. a bone-taking guide device; 11. a top plate; 12. a side plate; 13. fixing a bone taking opening; 14. cutting a horizontal hole; 15. a fixing hole; 20. a selectable bone access; 21. an outer edge; 30. taking a bone instrument; 31. a distal end; 32. a proximal end.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

Referring to fig. 1 to 3, which are schematic structural views of an embodiment of a femoral head necrosis iliac bone grafting and taking device according to the present invention, the femoral head necrosis iliac bone grafting and taking device includes a bone taking guide 10, an optional bone taking opening 20 and a bone taking device 30, wherein the bone taking guide 10 is U-shaped, and includes a top plate 11 and two side plates 12, a fixed bone taking opening 13 is disposed on the top plate 11, and the side plates 12 are in a ladder shape with a wide top and a narrow bottom. The lateral plate 12 is provided with a plurality of osteotomy horizontal holes 14 with the interval of 5 mm. The side plate 12 is also correspondingly provided with a fixing hole 15; is used for fixing the bone-taking guider by penetrating a kirschner wire.

The selectable bone taking port 20 is in a circular ring shape, and is provided with an outer edge 21 which is used for being clamped on the fixed bone taking port 13; the selectable bone taking openings are arranged in a plurality of numbers, and the diameters of the selectable bone taking openings are 9mm, 8mm, 7mm, 6mm and 5mm respectively. The outer edge of the arrangement with the small diameter is correspondingly larger so as to be clamped on the fixed bone taking opening.

The bone taking device 30 is integrally in a hollow cylinder shape, scales are arranged on the edge, the far end 31 is sharp, and the near end 32 is used for being connected with an electric drill; the bone harvester 30 enters the bone along the bone harvesting opening. The model is divided into six models, the diameters of the six models are 1cm, 9mm, 8mm, 7mm, 6mm and 5mm in sequence, and the six models are matched with the selectable bone taking opening 20.

In the operation, after the ilium is exposed, the two side plates 12 of the bone taking guide 10 are placed on the two sides of the ilium, the top plate 11 is pressed close to the ilium, and then the bone taking guide 10 is fixed by relatively penetrating a kirschner wire through the fixing holes 15 on the two side plates. Selecting a proper selectable bone taking port 20 according to the diameter of the decompression of the medullary core, clamping the selectable bone taking port on the fixed bone taking port 13, then selecting a bone taking device 30 with a proper diameter, connecting a near end 32 with an electric drill, entering the selectable bone taking port 20 by a sharp blade at a far end 31, recording the corresponding depth after drilling to a certain depth, such as 4cm, then sawing off the bottom end of the taken bone block from the horizontal hole 4cm of the osteotomy corresponding to the side plate, and then taking out the bone block.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims (5)

1. The utility model provides a bone device is got in bone grafting of femoral head necrosis ilium which characterized in that: the bone taking guide is U-shaped and comprises a top plate and two side plates, wherein the top plate is provided with a fixed bone taking port, the side plates are provided with a plurality of bone cutting horizontal holes, and the side plates are also correspondingly provided with fixing holes; the selectable bone taking port is in a circular ring shape, and an outer edge is arranged on the selectable bone taking port and is used for being clamped on the fixed bone taking port; the bone taking device is integrally hollow cylindrical, scales are arranged on the edge of the bone taking device, a sharp blade is arranged at the far end of the bone taking device, and the near end of the bone taking device is connected with an electric drill; the bone extractor is accessed along the bone extraction opening.

2. The femoral head necrosis ilium bone grafting and taking device as claimed in claim 1, wherein: the side plate of the bone taking guide is in a ladder shape with a wide upper part and a narrow lower part.

3. The femoral head necrosis ilium bone grafting and taking device as claimed in claim 1, wherein: the distance between the osteotomy horizontal holes on the side plate is 5 mm.

4. The femoral head necrosis ilium bone grafting and taking device as claimed in claim 1, wherein: the selectable bone taking openings are arranged in a plurality of numbers, and the diameters of the selectable bone taking openings are 9mm, 8mm, 7mm, 6mm and 5mm respectively.

5. The femoral head necrosis ilium bone grafting and taking device as claimed in claim 1, wherein: the bone taking device is divided into six bone taking device models, and the bone taking device models are 1cm, 9mm, 8mm, 7mm, 6mm and 5mm in diameter in sequence.

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