Laryngeal surgical instrument

Abstract

The invention discloses a laryngeal surgical instrument which comprises a laryngoscope handle and a throat cannula. The laryngeal surgical instrument is characterized in that the throat cannula is round or oval, a scissors forceps insertion channel and a detection head are arranged in the throat cannula, and a flexible opening is formed in the side wall of the scissors forceps insertion channel in the axial direction to facilitate diameter reduction of a laryngoscope. The laryngoscope can be conveniently and rapidly inserted into the trachea of a patient, contusion of the tracheal wall in the laryngoscope inserting process is reduced, and meanwhile a visual operative field is further remarkably widened. After the laryngoscope is inserted into a designated position, a pair of arc-shaped scissors forceps is movably inserted into the scissors forceps insertion channel for lesion tissue shear. Due to the fact that structure is adopted, the laryngeal surgical instrument has the advantages of being novel in structure, convenient to operate, short inn operation time, few in postoperative complications, small in patient's suffering, high in surgical operation accuracy and the like.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a throat surgery instrument. Background technique [0002] At present, the clinical treatment of vocal cord polyps generally adopts laryngoscopy. The existing laryngoscopy mainly includes the following types: [0003] In indirect laryngoscopy surgery, during surgery, the operator holds an indirect laryngoscope in one hand and a laryngeal forceps in the other. The principle is to use the mirror reflection of light to expose the glottis in the mirror for the operator to perform surgery. Its disadvantage is that when the laryngoscope and laryngeal forceps are respectively inserted into the larynx in sequence, it is easy to cause secondary damage to the patient's tracheal wall, and it is easy to accidentally damage the diseased tissue. [0004] Supporting laryngoscope surgery, which is a surgery for vocal cord polypectomy under a microscope directly looking at the suppor...

AI Technical Summary

Problems solved by technology

[0003] In indirect laryngoscopy surgery, during surgery, the operator holds an indirect laryngoscope in one hand and a laryngeal forceps in the other. The principle is to use the mirror reflection of light to expose the glottis in the mirror for the operator to perform surgery. Its disadvantage is that when the laryngoscope and laryngeal forceps are respectively inserted into the larynx in sequence, it is easy to cause secondary damage to the patient's tracheal wall, and it is easy to cause diseased tissue

[0004] Supporting laryngoscope surgery, which is a surgery for vocal cord polypectomy under a microscope directly looking at the supporting laryngoscope, is a traditional surgical method that has been used to this day. The supporting laryngoscope used in the operation includes a laryngoscope and a laryngeal forceps. The handle and the straight lumen connected at right angles to the handle, the upper end of the handle is connected to the support bracket, the middle of the straight lumen is a cavity, the middle of the front end of the straight lumen is a steel direct laryngoscope, and the laryngeal forceps are composed of a forceps handle, and a forceps The clamp body connected by the handle and the scissors placed at the front end of the clamp body are composed. During the operation, the patient needs to lie flat and put shoulder pads on the back so that the mouth, pharynx, and larynx are on the same straight line before inserting the front end of the straight tube cavity. For the larynx, select a laryngeal forceps with suitable scissors as needed, pass the body of the laryngeal forceps from the rear end of the straight lumen to the front end of the straight lumen, and perform direct surgery on the fixed and exposed vocal cords The disadvantage is that the laryngoscope has no magnifying effect, and it is difficult to distinguish the lesion range for more complex vocal cord polyps, and it is easy to remove too much, damage the vocal cord muscles and cause postoperative glottic insufficiency, aggravate hoarseness symptoms, or incomplete removal, The basal part remains and it is easy to relapse. Therefore, at present, a surgical microscope is added to the supporting laryngoscope for operation. The position of the microscope is to make the lens look directly at the affected part through the cavity in the straight tube cavity. Therefore, the cost of surgical instruments At the same time, because the operation required by the microscope is far away, and is limited by the size of the cavity in the straight lumen of the laryngoscope, in addition, the laryngeal forceps used for surgery occupy part of the space in the cavity, so the operation is as simple as The exposure is still not ideal, and in order to obtain complete glottic exposure in some patients, the operator often inserts and tightens the support frame of the support laryngoscope as much as possible when placing the support laryngoscope, so as to maximize the exposure, but it often affects the laryngoscope. Corresponding crush injury in the lower part of the body, and the tension of the vocal cords becomes larger, and the excessive tension of the vocal cord edge of patients with vocal cord polyps is not conducive to surgery

In addition, some patients have thick and short necks, curled epiglottis, changes in the curvature of the cervical spine, hyperosteogeny, protruding dentition, and high laryngeal body, which make it difficult to expose the glottis after inserting a supporting laryngoscope. Therefore, the root cannot complete the operation and the time cannot be extended

At the same time, since the straight tube laryngoscope requires three points and one line at the mouth, pharynx, and larynx during use, the disadvantages of this structure are: first, the compression of the straight tube lumen will affect the patient's palatal arch, tonsils, incisors and Contusions at the root of the tongue can cause bleeding, infection, loose teeth, and damage to the tongue nerve in severe cases, resulting in postoperative numbness in the mouth, loss of tongue taste and sensation, and tongue movement disorders. Polyps, after the straight tube is inserted, the thick straight tube will stretch the muscles of the throat wall, and it is easy to remove too much, which will damage the vocal cord muscles and cause postoperative glottic insufficiency, which will aggravate the symptoms of hoarseness

[0005] In order to solve the above-mentioned technical problems, CN201310194236 discloses an arc-shaped supporting laryngoscope surgical instrument, whose straight lumen is arc-shaped, although the first technical problem is solved, but in the process of inserting the trachea, due to the need Throat forceps and scissors are inserted at the same time, resulting in a large diameter of the front end of the surgical instrument, which is not conducive to rapid insertion and prolongs the operation time. Moreover, during the insertion process, the muscles of the throat wall will be damaged, causing secondary injuries to the patient.

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