Upper respiratory tract surface anesthesia device for fibrolaryngoscope

Abstract

The invention discloses an upper respiratory tract surface anesthesia device for a fibrolaryngoscope. The upper respiratory tract surface anesthesia device for the fibrolaryngoscope comprises a medicine injection device and an extension device, wherein the extension device comprises a tube body and an atomizing spray head; and a blocking component capable of being selectively unfolded or folded isarranged on the atomizing spray head. When the atomizing spray head is inserted into a biopsy channel of the fibrolaryngoscope along with the tube body, the blocking component is folded, so that insertion operation is facilitated; when the atomizing spray head reaches an opening in the top end of the biopsy channel of the fibrolaryngoscope, the blocking component is unfolded, and the blocking component is tightly attached to the biopsy channel, so that the atomizing spray head and the fibrolaryngoscope are fixed to each other, and the atomizing spray head can synchronously act along with thefibrolaryngoscope; and meanwhile, in the unfolding process of the blocking component, the position of the atomizing spray head in the biopsy channel can be calibrated and positioned, so that a spray head body and the biopsy channel are coaxial, it is guaranteed that the ejection direction of liquid medicine is consistent with the lens direction of the fibrolaryngoscope, and it is guaranteed that the ejection position of the liquid medicine corresponds to the observation position of a lens.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to an upper airway surface anesthesia device for a fiber laryngoscope. Background technique [0002] Fiber laryngoscope is a kind of medical optical fiber equipment, which can visually present the lesion through imaging and imaging technology during detailed examination of the larynx. The fiber laryngoscope has a hollow structure made of optical fiber. A biopsy channel is set in the hollow structure of the fiber laryngoscope, which can be connected with biopsy forceps for biopsy operation. Before the biopsy operation, local anesthesia is required for the biopsy area. Existing local anesthesia devices generally include a drug injection device and an extension device. The drug injection device includes a drug storage chamber and a pressurized structure. Operation, the extension device includes a tube body and an atomizing nozzle, the tail end of the tube body is connected...

AI Technical Summary

Problems solved by technology

However, the existing anesthesia devices cannot be applied to fiberoptic laryngoscopes. Since fiberoptic laryngoscopes are soft mirror structures, the hard tubes are easy to damage the optical fibers of the laryngoscopes during use, and the soft tubes are inserted into the fiberoptic laryngoscopes for biopsy. After the passage, the direction of the atomizing nozzle cannot be controlled, and the exit direction of the anesthetic liquid is not consistent with the direction of view of the laryngoscope, that is, it is impossible to ensure that the anesthetic liquid is sprayed to the biopsy area, which may cause pain to the patient

In addition, due to the hollow structure of the fiberoptic laryngoscope and the small space of the biopsy channel, the existing anesthesia device cannot be easily inserted into the fiberoptic laryngoscope

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