3D laparoscope with gyroscope device

Abstract

A 3D laparoscope can provide a three-dimensional surgical image, which is a huge advantage compared with a 2D laparoscope, but the 2D laparoscope can convert a visual angle by rotating a lens rod and observe a surgical area in more detail, but an existing 3D laparoscope cannot convert the visual angle, which is an obvious disadvantage. A lens rod of the 2D laparoscope is formed by connecting an optical catheter, a lens and a handle and can rotate relative to the optical catheter, the lens and the handle, the cameras are located at the position of the handle, and therefore image collection and display of the cameras are not affected by rotation of the lens rod. The rotation of the lens rod causes the inclination of the two cameras, so that the display frame is inclined, and the observation of the surgeon is influenced. The MEMS gyroscope is installed at the handle of the 3D laparoscope, the two cameras are connected through the thin connecting rod, the gyroscope enables the thin connecting rod to be always kept at the horizontal position through the transmission shaft, and therefore operation images with the stable horizontal plane can still be provided when the lens rod is rotated.

Description

Technical Field

[0001] The invention relates to medical equipment, in particular to a 3D laparoscope capable of switching viewing angles. Background Art

[0002] The laparoscope system is the main equipment for minimally invasive surgery, including the camera system, host and display. During surgery, the camera and instruments are inserted into the abdominal cavity, and the surgeon observes the operation process of the surgical instruments in the abdominal cavity in real time through the display. 3D laparoscope is developed on the basis of 2D laparoscope. It can provide a three-dimensional picture to more realistically display the surgical field of view, help surgeons more conveniently judge the spatial distance of organ structures, and make surgery safer. This is a transcendence of 2D laparoscope.

[0003] The lens of a 2D laparoscope is an optical lens that extends into the body. The camera device is located on a handle outside the body. The lens can be rotated to change different angles to observe the organ structure. A 3D laparoscope does not have an optical lens. Instead, two cameras are fixed on the top of the lens rod. During surgery, the angle of view cannot be changed by rotating the lens rod because this will cause the image on the display to tilt. Compared with a 2D laparoscope, the single angle of view is the biggest drawback of a 3D laparoscope. Summary of the invention

[0004] The purpose of the present invention is to enable a 3D laparoscope to overcome this defect, and to maintain the stability of the horizontal plane of the displayed image when the lens rod is rotated to switch different viewing angles, thereby achieving the same function as a 2D laparoscope.

[0005] The lens rod of a 2D laparoscope is a pure optical catheter. During surgery, the camera device is located outside the body. The camera device and the lens rod are not fixed. When the lens rod is rotated, different angles of view can be obtained to observe the surgical field of view without affecting the stability of the camera device, so the horizontal stability of the display screen can be maintained. The two cameras of today's 3D laparoscopes are fixedly installed on the top of the lens rod. When the lens rod is rotated, the two cameras are tilted, causing the display screen to tilt, affecting the surgeon's observation. During surgery, the image must be kept stable, which sacrifices the advantage of multiple angles of view.

[0006] The idea of ​​the present invention is to keep the two cameras at the top of the lens rod in a horizontal relationship when the lens rod of the 3D laparoscope rotates, instead of tilting with the rotation of the lens rod, so that the display image remains stable in the horizontal plane.

[0007] The lens rod and handle of the 3D laparoscope are an integrated structure. During surgery, the lens rod is extended into the body, and the handle is located outside the body and held by the surgeon. The lens rod can be rotated by rotating the handle. The present invention places a MEMS gyroscope in the handle, and the two cameras at the top of the lens rod are connected by a short thin connecting rod. The gyroscope controls the connecting rod to maintain a horizontal position through a transmission shaft, so that the two cameras always maintain a horizontal observation of the surgical area and do not rotate with the rotation of the lens rod, thereby providing a horizontally stable 3D image.

[0008] The transmission shaft is vertically fixed on a thin connecting rod and mounted on a bearing inside the top of the lens rod. The transmission shaft is used to control the rotation of the two cameras in the internal space of the lens rod. This is different from the current 3D laparoscope that fixes the camera at the top of the lens rod.

Claims

1. A 3D laparoscope with a gyroscope device, characterized in that: A MEMS gyroscope is installed on the lens handle, and the two cameras at the top of the lens rod are connected by a thin connecting rod. The gyroscope controls the thin connecting rod through the transmission shaft to maintain it in a horizontal position.

2. The 3D laparoscope with a gyroscope device according to claim 1, characterized in that: The two cameras and the thin connecting rod are mounted on the bearing at the top end of the lens rod through a transmission shaft vertically fixed on the thin connecting rod.