CN203828903U - Coronal plane balance measurer for spinal deformity correction surgery - Google Patents

Abstract

The utility model relates to a coronal plane balance measurer for a spinal deformity correction surgery. The coronal plane balance measurer is so structured that a vertical measuring rod is vertically connected with a horizontal measuring groove, a left ilium fixing nail handle and a right ilium fixing nail handle are slidingly connected in the horizontal measuring groove, and the left ilium fixing nail handle and the right ilium fixing nail handle are fixedly connected with a left ilium fixing nail and a right ilium fixing nail, respectively. The coronal plane balance measurer is used for overcoming the defect that the recovery degree of the coronal plane only can be evaluated by virtue of naked-eye observation or postoperative repeated fluoroscopy for preventing postoperative decompensation of the coronal plane. The coronal plane balance measurer is specially used for the measurement of evaluating the balance recovery degree of the coronal plane in a scoliosis correction surgery, helps a surgeon with objectively evaluating the recovery degree of the coronal plane in the scoliosis correction surgery and is capable of immediately adjusting the correction degree of the coronal plane so as to improve the curative effect of the scoliosis correction surgery and increase the success ratio thereof; meanwhile, the radiation dose in the surgery can be reduced, and the problems of unequal-high double shoulders, trunk tilt and the like of a patient after the surgery also are reduced.

Description

Coronal plane balance measuring instrument in spinal orthopedics

technical field

The utility model relates to a surgical instrument, in particular to a coronal plane balance measuring instrument in spinal orthopedics.

Background technique

Scoliosis refers to a spinal deformity in which one or several segments of the spine bend laterally, accompanied by vertebral body rotation and an increase or decrease in kyphosis or lordosis on the sagittal plane. It is a three-dimensional deformity. The International Scoliosis Research Society (SRS) defines scoliosis as follows: the Cobb method is used to measure the curvature of the spine on the anteroposterior X-ray film of the standing spine, and the angle greater than 10° is called scoliosis.

Before the invention of the utility model, although the use of spinal orthopedic surgery to treat scoliosis has been carried out at home and abroad, the complexity of this surgery has limited its wide application in a wide range, and the sagittal plane is often combined after surgery. , Coronal decompensation is one of the most important limiting factors. During orthopedic surgery, surgeons mainly use techniques such as long-segment fixation, intraoperative rod bending, and osteotomy to avoid postoperative sagittal decompensation, but when preventing postoperative coronal decompensation, surgical However, the doctor seemed helpless. During the operation, he could only evaluate the recovery degree of the coronal plane through naked eye observation or repeated postoperative fluoroscopy. However, there is a lot of subjectivity in the way of naked eye observation, which cannot reflect the real orthopedic effect, and repeated fluoroscopy cannot reflect the recovery degree of the overall coronal plane of the spine. Therefore, surgeons are often unable to accurately and objectively assess the recovery degree of the coronal plane, which will cause irreparable consequences after surgery, because once the patient is found to have an imbalance on the coronal plane after surgery, such as uneven height of the shoulders, severe inclination of the trunk, etc. In this case, it can only be corrected by pulling the lower limbs, raising the height, or correcting the posture by the patient himself, and the effects of these methods are often very limited. Specific manifestations: 1. At present, surgeons evaluate the degree of coronal restoration during orthopedic surgery mainly by visual observation, which is highly subjective. 2. Intraoperative fluoroscopy of the C-arm machine is used to evaluate the degree of recovery of the coronal plane. The range of fluoroscopy segments is limited and cannot include the entire spine at one time. Repeated fluoroscopy is required during the operation, so the patient receives more radiation dose.

Contents of the invention

The purpose of this utility model is just to overcome above-mentioned defect, develops the coronal plane balance measuring instrument in spinal orthopedics.

The technical scheme of the utility model is:

The coronal plane balance measuring instrument in spinal orthopedics, its main technical feature is that the vertical measuring rod is vertically connected with the horizontal measuring groove, the handle of the left ilium fixation screw and the handle of the right ilium fixing screw are slidably connected in the horizontal measuring groove, and the left iliac crest is fixed The nail handle and the right ilium fixation nail handle are respectively connected with the left ilium fixation screw and the left ilium fixation screw.

The external thread at the upper end of the left iliac nail is connected with the internal thread at the lower end of the left iliac nail handle, and the external thread at the upper end of the right iliac nail is connected with the internal thread at the lower end of the right iliac nail handle.

The handle of the left ilium fixation screw and the left ilium fixation screw, the handle of the right ilium fixation screw and the left ilium fixation screw are separated on the horizontal measuring groove of the vertical measuring rod.

The vertical measuring rod is connected with the vertical measuring extension rod.

The utility model has the advantages and effects of measuring the recovery degree of coronal plane balance specially for scoliosis correction surgery, assisting surgeons to objectively evaluate the recovery degree of coronal plane during scoliosis correction surgery, and being able to adjust the degree of coronal plane correction in time , to improve the curative effect and success rate of scoliosis correction surgery; at the same time reduce the radiation dose during the operation, and also reduce the occurrence of postoperative shoulder unequal height and trunk tilt.

Other specific advantages and effects of the utility model will be explained below.

Description of drawings

Fig. 1 - schematic diagram of the structure principle of the utility model.

Each label in the figure indicates the corresponding component name as follows:

Vertical measuring rod 1, left ilium fixation screw handle 2, left ilium fixation screw 3, connector 4, horizontal measurement groove 5, right ilium fixation screw handle 6, right ilium fixation screw 7, vertical measurement extension rod 8.

Detailed ways

As shown in Figure 1:

Vertical measuring rod 1 is connected with horizontal measuring groove 5 by connector 4, and is 90 °, vertical measuring rod 1 is connected with vertical measuring extension rod 8 by nut, can increase the length of vertical measuring rod 1 to reach the length of the whole spine; The left ilium fixation screw handle 2 can slide horizontally in the horizontal measurement groove 5 to reach the best position, and then fix it in the horizontal measurement groove 5 through the upper end thread, and then connect the left iliac bone through the external thread of the left ilium fixation screw 3 through the built-in thread. The bone fixation screw 3 is tightened; the same is true for the right side, that is, the right iliac bone fixation screw handle 6 can slide horizontally in the horizontal measurement groove 5 to reach the best position, and then fix it in the horizontal measurement groove 5 through the upper end thread, and then fix it by the built-in thread The left ilium fixation screw 7 is tightened; the left ilium fixation screw handle 2 and the left ilium fixation screw 3 , the right ilium fixation screw handle 6 and the left ilium fixation screw 7 are separated on the horizontal measuring groove 5 .

Description of the utility model application process:

After the scoliosis correction operation is completed, the patient is placed in a prone position, and the highest points of the bilateral posterior superior iliac spines are marked, and the left iliac crest screw 3 and right iliac crest fixation 7 are respectively fixed at the highest points of the bilateral posterior superior iliac spines , then slide the left ilium fixation nail handle 2 and the right ilium fixation screw handle 6 on the horizontal measurement groove 5 to reach the best position, fix them in the horizontal measurement groove 5 through the upper end thread, and then place the left iliac crest fixation nail 3 The external thread at the upper end is connected with the internal thread at the lower end of the left ilium fixation screw handle 2, and the external thread at the upper end of the right ilium fixation screw 7 is connected with the internal thread at the lower end of the right ilium fixation screw handle 6, so as to fix the horizontal measuring groove 5 on the two sides of the iliac bone. On the same level as the line connecting the posterior superior spines. Finally, the vertical measuring rod 1 is connected with the horizontal measuring groove 5 through the connecting head 4. If the vertical measuring rod 1 is not at the level of the patient's shoulder height, the vertical measuring extension rod 8 is then screwed on; For the line connecting the midpoint of the highest point of the lateral iliac crest, use a protractor to measure the angle formed between it and the vertical measuring rod 1. If the angle formed between the two exceeds 5°, it can be considered that there is an unbalanced state on the coronal plane of the patient at present, that is, it is necessary to adjust the shape of the coronal plane in time during the operation to achieve a balanced state. Disadvantages of coronal plane imbalance such as trunk inclination discovered when standing up later. At the same time, the length of the vertical measuring rod 1 (if necessary, the vertical measuring extension rod 8) is sufficient to measure the whole spine at one time, which can not only make up for the limited range of C-arm machine perspective during the operation, but also reduce the number of perspectives to a greater extent. Reduce radiation dose.

Claims (4)

1. The coronal plane balance measuring instrument in spinal orthopedics is characterized in that the vertical measuring rod is vertically connected to the horizontal measuring groove, the handle of the left ilium fixing screw and the handle of the right ilium fixing screw are slidably connected in the horizontal measuring groove, and the left ilium fixing screw is connected to the horizontal measuring groove. The handle and the handle of the right ilium fixation screw are respectively connected with the left ilium fixation screw and the left ilium fixation screw. 2. The coronal plane balance measuring instrument in spinal orthopedics according to claim 1, characterized in that the external thread at the upper end of the left ilium fixation screw is connected with the internal thread at the lower end of the left ilium fixation screw handle, and the upper end of the right ilium fixation screw is externally threaded It is connected with the internal thread at the lower end of the right ilium fixation nail handle. 3. The coronal plane balance measuring instrument in spinal orthopedics according to claim 1, characterized in that the left iliac nail handle and the left iliac nail, the right iliac nail handle and the left iliac nail are separated in vertical on the horizontal measuring groove of the measuring rod. 4. The coronal plane balance measuring instrument in spinal orthopedics according to claim 1, characterized in that the vertical measuring rod is connected with the vertical measuring extension rod.