Artifact eliminating device and artifact eliminating method for OCT
An optical fiber and inner cavity technology, applied in the field of artifact elimination devices, can solve the problems of interfering with host imaging information, imaging artifacts, etc., and achieve the effects of avoiding damage, eliminating artifacts, and avoiding damage
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Embodiment 1
[0038] refer to Figure 1-3 , a device for eliminating artifacts, comprising a shaft sleeve 10 with a lumen, an optical fiber 30 passing through the inner lumen, and a pressing member 20 installed on the sleeve 10; the pressing member 20 extends into the inner cavity It can be understood that the pressed part of the optical fiber 30 protrudes outward relative to its central axis to form a bend.
[0039] In actual use, connect the probe composed of this artifact elimination device to an external host, and use the above-mentioned probe in a straight state to scan the external finger tissue. At this time, Figure 5-7 For the imaging results when the optical fiber 30 is bent to different degrees, and from Figure 4-7 It can be directly seen from the Figure 5-7 compared to the imaging Figure 4 For the existing probes that do not bend the optical fiber 30, the artifacts are obviously eliminated. As can be seen from the above, the present invention can filter out the stray light...
Embodiment 2
[0045] It differs from the first embodiment in that it also includes the following preferred embodiments:
[0046] In a preferred embodiment of the present invention, the above-mentioned shaft sleeve 10 is a shaft coupling, which is convenient for connecting with an external host through the shaft coupling.
[0047] In a preferred embodiment of the present invention, a channel 40 is opened on the side of the sleeve 10, and the channel 40 communicates with the outside and the inner cavity; the inner wall of the channel 40 is provided with a first thread; the pressing member 20 is penetrated in the channel 40, and The outer surface of the pressure piece 20 is provided with a second screw thread that is screw-fitted with the first thread, so that the pressure piece 20 is fixed on the axle sleeve 10; meanwhile, the pressure piece 20 can be rotated to Adjust the direction close to or away from the optical fiber 30, so as to adjust the degree of its resistance to the optical fiber 3...
Embodiment 3
[0050] It differs from the first embodiment in that it also includes the following preferred embodiments:
[0051] In a preferred embodiment of the present invention, the pressing member 20 includes a connecting portion 22 fixedly connected to the sleeve 10, and a 30 direction and gradually narrowed pressing portion 23; it can be understood that the outer diameter of the pressing portion 23 gradually decreases from one end close to the connecting portion 22 to the other end, thereby reducing the pressure of the pressing portion 23 to the optical fiber. 30, so that the optical fiber 30 can be bent faster.
[0052] In a preferred embodiment of the present invention, the pressing portion 23 is conical, or the pressing portion 23 is hemispherical. At this time, the end of the pressing portion 23 facing the optical fiber 30 can be prevented from being formed as a pointed end. , so that the insertion damage to the optical fiber 30 can be avoided.
[0053] When the second embodimen...
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