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Safe area establishing method suitable for hip joint surgery

A technology for establishing a safe area and a method for establishing a safe area is applied in the field of establishing a safe area for hip joint surgery. It can solve problems such as changes in walking posture, changes in gravity distribution of the center of gravity, and inconvenience, so as to improve the success rate of surgery and ensure rapid recovery.

Pending Publication Date: 2022-01-11
北京壹点灵动科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for establishing a safe area suitable for hip joint surgery, which solves the problem that in the prior art, doctors rely on personal experience to arbitrarily intercept the femoral neck and femoral head, and then implant the metal femoral stem. The position of the center of rotation of the original femoral head is consistent with that of the original femoral head, which leads to the shift of the center of gravity and the change of the gravity distribution after the operation, which leads to the change of the walking posture, which brings great inconvenience.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for establishing a safe area suitable for hip joint surgery, including selecting an oblique plane and determining the section of the greater trochanter, introducing a robotic arm as a medical auxiliary surgical instrument for the hip joint, and determining a reasonable space protection area as the safety area based on the patient's femur.

[0023] According to above-mentioned embodiment, it can be seen that the line of force defined in this patent refers to the direction of the patient's body center of gravity in the force of the leg, and the straight line view formed by the center of the line between the center of rotation of the patient's femoral head and the inner and outer sides of the distal end of the femur. is the force line, the femoral axis refers to the midline of the bone marrow cavity, and the angle between the force line and the femoral axis is called the valgus angle, which is usually between 5 and 7 degrees. The angle makes the postoperative centr...

Embodiment 2

[0025] The common plane where the line of force and the femoral axis are located is called the femoral side section, and then the plane 10 mm above the lesser trochanter (proximal direction), which forms an angle of 45° / 135° with the femoral axis and is perpendicular to the femoral side section, is the oblique plane. Cutting plane, the plane to be cut in the operation is composed of the vertical section made from the root of the greater trochanter and the oblique plane. Select the proximal point of the force line (the center of femoral rotation) and the proximal point of the femoral axis, and the length of the line connecting the two points Twice the length L as the radius to form an ellipse, take the intersection point of the femoral axis and the line of force, that is, the midpoint of the line between the inner and outer condyles of the distal femur, as the center, make a circle with L as the radius, connect the circle and the ellipse, and form a quasi-circular platform. Safe...

Embodiment 3

[0027] Determine whether the end of the manipulator is currently in the safe zone. If yes, retreat to the edge of the safe zone. Determine whether the final working point is in the safe zone. Otherwise, the way point is the final operation point. The current end point of the manipulator and the way point are used as the diameter, and the midpoint is used as the center to make a circle. The semicircle that does not pass through the safety zone is selected as the motion trajectory, and the trajectory point is linearly interpolated. The position and posture remain unchanged, moving to the approach point, and the robot arm moves from the approach point to the final working point, which can effectively make the robot arm avoid obstacles, improve the success rate of the operation, and ensure the rapid recovery of the patient.

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Abstract

The invention relates to the technical field of hip joints, in particular to a safe area establishing method suitable for hip joint surgery, and solves the technical problems that in the prior art, a doctor arbitrarily intercepts a femoral neck and a femoral head according to personal experience and then implants a metal femoral stem, the metal femoral stem head cannot be consistent with the rotation center position of the original femoral head, and therefore, the problem of great inconvenience caused by the change of the walking posture due to the deviation of the gravity center, the change of gravity distribution and the like after the patient operation is solved. A safe area establishing method suitable for hip joint surgery comprises the steps that a diagonal plane is selected, a large trochanter section is determined, a mechanical arm is introduced to serve as a hip joint medical auxiliary surgical instrument, and a certain reasonable space protection area is determined to serve as a safe area according to the femur of a patient. Compared with cutting by experience of doctors, the method is more scientific, the eversion angle can be kept unchanged as much as possible, and the body gravity center bearing condition of a patient after an operation cannot be greatly changed.

Description

technical field [0001] The invention relates to the technical field of hip joints, in particular to a method for establishing a safe area suitable for hip joint surgery. Background technique [0002] A hip joint consists of the femoral head and the acetabulum. It is a ball-and-socket joint and is a typical ball-and-socket joint. [0003] In traditional hip surgery, the doctor cuts the femoral neck and femoral head arbitrarily based on personal experience, and then implants the metal femoral stem, which cannot ensure that the position of the metal femoral stem is consistent with the original femoral head rotation center, which leads to the patient's center of gravity shifting after surgery And changes in gravity distribution etc. lead to changes in walking posture, which brings great inconvenience. Contents of the invention [0004] The purpose of the present invention is to provide a method for establishing a safe area suitable for hip joint surgery, which solves the prob...

Claims

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Application Information

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IPC IPC(8): A61F2/46A61B90/00A61B34/30A61B34/00
CPCA61F2/4607A61F2/4657A61B90/03A61B90/06A61B90/08A61B34/30A61B34/70A61F2002/4632A61F2002/4688A61B2090/08021A61B2090/0815
Inventor 张世凯
Owner 北京壹点灵动科技有限公司
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