Dilator and surgical instrument
A technology of surgical instruments and dilators, which is applied in the field of medical devices, can solve the problems of low convenience and accuracy of dilators, and achieve the effects of increasing convenience and flexibility, improving convenience and accuracy, and improving convenience
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Embodiment 1
[0036] The dilator provided in this embodiment, such as Figure 1 to Figure 4 As shown, it includes an inner tube 2 and an outer tube 1; one end of the inner tube 2 is tapered; the outer tube 1 is sleeved on the inner tube 2, and the inner wall of the outer tube 1 has an endoscopic lens channel 11 and / or suction Channel 12; the endoscope lens channel 11 is used to fix the endoscope lens, and the endoscope lens is used to connect with the endoscope device; the suction channel 12 is used to connect with the aspirator.
[0037] Wherein, the inner wall of the outer tube 1 may only have the endoscopic lens channel 11 , may only have the suction channel 12 , or may have both the endoscopic lens channel 11 and the suction channel 12 .
[0038] Wherein, when there is an endoscopic lens channel 11 on the inner side wall of the outer tube 1, during operation, the inner tube 2 and the outer tube 1 are simultaneously punctured to a suitable puncture site by using the tapered end of the in...
Embodiment 2
[0059] The surgical instrument provided in this embodiment includes the dilator described in Embodiment 1. During operation, the dilator uses the end of the inner tube 2 to simultaneously puncture the inner tube 2 and the outer tube 1 to a suitable puncture site. In the tissue, the endoscopic lens can be used to observe whether the dilator reaches the target puncture site, thereby improving the accuracy of puncture. After the dilator reaches the target puncture site, the inner tube 2 is drawn out of the patient's body, and the operation can be performed. During the operation, the direction and depth of the dilator and the endoscopic lens need to be changed at any time according to the location and shape of the lesion in the brain. The dilator and the endoscopic lens can move synchronously, flexibly change the operation direction and depth, and shorten the operation time. At the same time, the suction channel 12 on the outer tube can absorb the blood and exudate in the operati...
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