CN214387582U

CN214387582U - Closed osteotomy saw blade for orthopedic surgery

Info

Publication number: CN214387582U
Application number: CN202022908825.7U
Authority: CN
Inventors: 张皓宣
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-10-15
Anticipated expiration: 2030-12-07

Abstract

The utility model discloses a orthopedic closed of bone cuts bone saw bit for operation, including the fixed multi-disc individual layer saw bit that stacks the multi-disc from top to bottom, the saw sword of multi-disc individual layer saw bit, the saw sword that is located the individual layer saw bit of bottommost promptly is located foremost, and the saw sword of other individual layer saw bits all leans on the back than the saw sword of the adjacent individual layer saw bit in its below. The utility model adopts the design of a plurality of single-layer saw blades, controls the thickness of the whole saw blade by setting the number of single-layer saw blades and the thickness of the single-layer saw blades, further controls the osteotomy angle, realizes one-step forming of the osteotomy, and ensures that the osteotomy surface is neat; the osteotomy angle of the saw blade cannot be lost in the operation process of the operation, cannot be interfered by the environment, and is accurate; greatly reduces the difficulty of the osteotomy operation, is simple and quick to use, has high osteotomy efficiency, saves the operation time and simultaneously ensures the safety of the patient.

Description

Closed osteotomy saw blade for orthopedic surgery

Technical Field

The utility model belongs to the technical field of orthopedic surgery medical instrument, a closed osteotomy saw bit for orthopedic bone is related to.

Background

Various bone deformities may result from a variety of causes, including morphological abnormalities, pain, dysfunction, and disability. Seriously affecting the quality of life of the patient. Correcting deformities is a means of orthopedic correction, with closed osteotomies being an important means. The closed osteotomy is designed, a part of bone is removed according to a wedge-shaped design, two artificially formed osteotomy surfaces are combined, the two ends of an osteotomy area are stabilized by using an internal fixation technology, and the later period bone surfaces are healed, so that the purpose of correcting bone deformity is achieved to treat the pain of a patient, and the closed osteotomy is particularly widely used for distal femur osteotomy and proximal tibia osteotomy to treat knee osteoarthritis caused by improper force lines, so that the pain treatment of the osteoarthritis can be relieved or cured.

The closed osteotomy principle is that the force line is adjusted by the closed osteotomy surface of the femur or the tibia outside the knee joint, so that the load center of the previous lower limb of a patient is turned from the affected side compartment damaged by the knee joint to the relatively normal middle healthy side compartment, thereby reducing the pressure of the affected side compartment of the knee joint, loosening soft tissues of the affected side compartment, repairing the abraded and degenerated affected side compartment cartilage, relieving pain symptoms and delaying the time and the trend of the integral degeneration of the joint. And current research suggests that the worn cartilage of the knee joint surface can be partially regenerated after a closed osteotomy. Closed osteotomies around the knee joint have been developed over 50 years of clinical use as a safer, accurate and effective surgical technique to treat tens of thousands of patients with knee osteoarthritis each year.

The existing osteotomy usually adopts a single saw blade to perform V-shaped osteotomy according to a design angle, and due to the influence of the thickness of the saw blade and the osteotomy angle, the angle after the osteotomy has great error, the two osteotomy surfaces are not smooth after being involuted, and the osteotomy angle is difficult to adjust. The angle which needs to be adjusted is very small, and the operator often has difficulty in holding the angle in the process of free-hand osteotomy, so that the osteotomy result is not ideal and cannot reach the adjustment target. At present, no tool is specially used for closing osteotomy. The existing tool designs an angle tool frequently, and the tool is available in time, but the osteotomy error and the manual operation result can not be accurately controlled.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a closed osteotomy operation saw bit for orthopedic bone, the osteotomy angle is accurate and the osteotomy one shot forming.

The utility model adopts the technical scheme that a orthopedic closed of bone cuts bone saw bit for operation, including the fixed multi-disc individual layer saw bit that stacks the multi-disc from top to bottom, the saw sword of multi-disc individual layer saw bit, the saw sword that is located the individual layer saw bit of bottommost promptly is located foremost, and the saw sword of other individual layer saw bits all leans on the back than the saw sword of the adjacent individual layer saw bit in its below.

The utility model is also characterized in that,

the end of the single-layer saw blade at the bottommost part is provided with a joint.

The single-layer saw blade is of a hollow structure in the middle.

The single-layer saw blade is a rectangular saw blade, the saw blade is arranged along the edge of the short edge of the rectangular saw blade, and the right angle of the rectangular saw blade is arranged into a round chamfer or an oblique chamfer.

Each edge of the single-layer saw blade is a chamfered chamfer.

The utility model has the advantages that:

the utility model is a saw blade for closed osteotomy for orthopedic bone, which has simple structure, safety and reliability; the design of a plurality of single-layer saw blades is adopted, the thickness of the whole saw blade is controlled by setting the number of the single-layer saw blades and the thickness of the single-layer saw blades, so that the osteotomy angle is controlled, the osteotomy is formed at one time, and the osteotomy surfaces are aligned; the osteotomy angle of the saw blade cannot be lost in the operation process of the operation, cannot be interfered by the environment, and is accurate; greatly reduces the difficulty of the osteotomy operation, is simple and quick to use, has high osteotomy efficiency, saves the operation time and simultaneously ensures the safety of the patient.

Drawings

FIG. 1 is a schematic view of a blade for closed osteotomy for orthopedic bone surgery according to the present invention;

FIG. 2 is a comparison anterior-posterior tibial orthopaedic view of a tibia with an varus foot, wherein FIG. 2(a) is a schematic view of the tibia with the varus foot, and FIG. 2(b) is a schematic view of the tibia after the correction of FIG. 2 (a);

FIG. 3 is a view showing a state of an osteotomy opening by using the saw blade of the present invention, wherein FIG. 3(a) is a schematic view showing an opening of the osteotomy by using the saw blade of the present invention when the osteotomy opening is opened; FIG. 3(b) is a schematic view of the osteotomy angle with the osteotomy opening open; figure 3(c) is a schematic view of the osteotomy opening closed.

In the figure, 1 is a single-layer saw blade, and 2 is a joint.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The utility model relates to a orthopedic closed of bone cuts bone saw bit for operation, as shown in fig. 1, including the fixed multi-disc individual layer saw bit 1 that stacks the multi-disc from top to bottom, the saw sword of multi-disc individual layer saw bit 1, the saw sword that is located the individual layer saw bit 1 of bottommost promptly is located foremost, and the saw sword of other individual layer saw bits 1 all leans on the back than the saw sword of the adjacent individual layer saw bit 1 in its below.

The end of the single-layer saw blade 1 at the bottommost part is provided with a joint 2, and the ends of the other single-layer saw blades 1 are flush.

Preferably, the single-layer saw blade 1 has a hollow structure in the middle.

The single-layer saw blade 1 is a rectangular saw blade, the saw blade is arranged along the edge of the short edge of the rectangular saw blade, and the right angle of the rectangular saw blade is arranged to be a round chamfer or an oblique chamfer.

Each edge of the single-layer saw blade 1 is a chamfered chamfer.

The utility model relates to a closed osteotomy of orthopedic bone saw bit's theory of operation specifically as follows:

taking tibia inversion as an example, as shown in fig. 2(a), the tibia has a severe tibia inversion angle, the knee joint and the ankle joint line are not parallel, and high tibial osteotomy is required. When cutting the bone, the two bone cutting surfaces form a V-shaped opening, the opening is closed after the bone cutting, and the force line of the lower limb is corrected to enable the knee joint and the ankle joint line to be parallel.

Use the utility model discloses a saw bit cuts bone, cuts bone angle (the V-arrangement opening angle of cutting the bone promptly) as required and sets up the number of pieces of individual layer saw bit 1 and individual layer saw bit 1 thickness for the angle alpha that each layer saw bit formed is the same with cutting bone angle.

When cutting bone, the connector 2 is connected with a driving device, so that the saw blade swings to cut bone, the bone cutting opening is shown as figure 3(a), one bone cutting surface is a parallel bone cutting surface, the other bone cutting surface is in a step shape and is matched with the shape of the saw blade, as shown in figure 3(b), the included angle between the inclined surface of the step-shaped bone cutting surface and the parallel bone cutting surface is a bone cutting angle, and the bone cutting is finished. Subsequently, the osteotomy opening is closed, and the gap between the two osteotomy surfaces is filled, so that the orthopedic treatment can be finally realized.

Except common osteotomy operations such as the tibia, the saw blade of the utility model can also be used for other osteotomy operations requiring precision at the position.

In this way, the utility model relates to a closed osteotomy of orthopedic bone operation is with saw bit's characteristics as follows:

1) the bone cutting guide device is not required to be matched, and the bone is cut independently;

2) the osteotomy is formed at one time, and the angle does not need to be adjusted in the osteotomy process;

3) the bone cutting speed is high, and the bone cutting angle is accurate;

4) the osteotomy angle is flexible and adjustable.

Claims

1. The saw blade for the closed osteotomy operation for orthopedic orthopedics is characterized by comprising a plurality of single-layer saw blades (1) which are vertically fixed and stacked, wherein the saw blades of the single-layer saw blades (1), namely the saw blade of the single-layer saw blade (1) positioned at the bottommost part, are positioned at the foremost end, and the saw blades of other single-layer saw blades (1) are all arranged at the back of the saw blades of the adjacent single-layer saw blades (1) below the single-layer saw blades.

2. A blade for closed osteotomy of orthopedic bones, according to claim 1, characterized in that the end of the single-layer blade (1) located at the bottom most is provided with a joint (2).

3. The blade for closed osteotomy of a bone orthopedic procedure according to claim 1, characterized in that said single-layer blade (1) is a hollow structure.

4. The blade for closed osteotomy of orthopedic bones as claimed in claim 1, wherein said single-layer blade (1) is a rectangular blade, said blade is disposed along the edge of the short side of the rectangular blade, and the right angle of said rectangular blade is a round or oblique chamfer.

5. The blade for closed osteotomy of a bone orthopedic procedure according to claim 4, characterized in that each edge of said single-layer blade (1) is a chamfered chamfer.