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CN-224220539-U - Inflation-free tracheal cannula

CN224220539UCN 224220539 UCN224220539 UCN 224220539UCN-224220539-U

Abstract

The utility model discloses an inflation-free trachea cannula which comprises a trachea cannula tube body and a connector, wherein an inflation-free cuff is arranged at the patient end of the trachea cannula tube body, a pull rope is pulled to pass through the trachea cannula tube body and then connected with the inflation-free cuff so as to control the contraction of the inflation-free cuff and further realize the relaxation of the inflation-free cuff so as to seal the airway of a patient, and the inflation-free cuff is of a cone-shaped structure. The utility model is suitable for patients with different human anatomy structures, can reduce the operation procedure of inflating the cuff by medical staff, reduces the rupture of the cuff to cause tracheal intubation and delay treatment, can reduce the necrosis of airway mucosa of the patient caused by excessive inflation, can reduce the scar stenosis after operation, can reduce the related pneumonia of a respirator caused by the too-low inflation or the wrinkle of the cuff without inflation, can also reduce the falling off of the tracheal intubation caused by the movement of the patient during operation, and can more easily receive secretion when secretion or gastric reflux enters the airway of the patient.

Inventors

  • Duan Baozhi
  • Duan Songfeng

Assignees

  • 广州维力医疗器械股份有限公司

Dates

Publication Date
20260512
Application Date
20250401

Claims (8)

  1. 1. The inflation-free trachea cannula comprises a trachea cannula tube body (2) and a connector (7), and is characterized in that an inflation-free cuff (1) is arranged at the patient end of the trachea cannula tube body (2), a pulling rope (3) is connected with the inflation-free cuff (1) after passing through the trachea cannula tube body (2) and used for controlling the contraction of the inflation-free cuff (1) and further realizing the relaxation of the inflation-free cuff (1) so as to seal the airway of the patient, and the inflation-free cuff (1) is of a truncated cone-shaped structure.
  2. 2. An inflation-free tracheal tube as claimed in claim 1, wherein the inflation-free cuff (1) comprises a conical cuff (1-1), a contraction wire (1-2), a sliding ring (1-3) and at least one reinforcing rib (1-4), one end of the reinforcing rib (1-4) is fixed inside the cuff (1-1) and the other end of the reinforcing rib (1-4) is connected with the sliding ring (1-3), wherein the inflation-free cuff (1) is used for contracting the cuff (1-1) under the action of the contraction wire (1-2) when the pull rope (3) is pulled, and the cuff (1-1) is used for automatically opening the required size according to the size of an air passage under the action of the supporting rib (1-4) after the contraction wire (1-2) is released.
  3. 3. The inflation-free tracheal cannula as claimed in claim 2, wherein the tail end of the pull rope (3) is connected with a pull ring (4) for controlling the contraction of the cuff (1-1).
  4. 4. An inflation-free tracheal cannula as claimed in claim 2, wherein the inflation-free cuff (1) is of PVC material or PU material or TPE material.
  5. 5. An inflation-free endotracheal tube according to claim 2 or 3, wherein the stiffening ribs (1-4) are integrally injection moulded or bonded to the cuff (1-1).
  6. 6. The inflation-free tracheal cannula of claim 5, wherein the stiffener (1-4) is provided with a flexible wrapping layer for protecting the airway mucosa from damage.
  7. 7. An inflation-free tracheal cannula as claimed in claim 2 or 3, wherein the tracheal cannula body (2) is provided with at least one suction hole, and the suction hole is close to the root of the cuff (1-1) for better sucking secretion of a patient.
  8. 8. The inflation-free trachea cannula according to claim 1 or 2, wherein a suction tube (5) and a suction joint (6) are further arranged at the proximal machine end of the trachea cannula tube body (2).

Description

Inflation-free tracheal cannula Technical Field The utility model relates to the technical field of trachea cannula, in particular to an inflation-free trachea cannula. Background In the general anesthesia field, endotracheal intubation is one of the longest used products. For the cuff inflation trachea cannula which is clinically used at present, when in use, the pressure is too high to cause the ischemia necrosis of the trachea mucosa due to the excessive inflation of medical staff, and the scar is narrow after operation. The balloon is under inflated, resulting in a low pressure causing regurgitated stomach contents to enter the lungs causing pneumonia. Even during surgery, the tracheal cannula is detached or displaced due to movement. For patients with abnormal airway anatomy, the existing inflatable columnar sacs are difficult to meet the requirements. U.S. patent application publication No. US20160228662A1, publication No. 2019-08-06, discloses sealing the patient's airway by injecting a liquid into the cuff interlayer and injecting a gas into the cuff interlayer. The method is complicated to operate by medical staff, and if the cuff is broken, liquid can leak into the lung of a patient, so that the method is difficult to implement from the technical aspect. In addition, there is also examined Chinese patent literature, patent application number 202123190320.2, titled inflation-free tracheal cannula, publication date 2023-01-17, whose disclosed inflation-free cuff is of inverted conical structure, which is easy to cause secretion to enter the airway of patient, bacterial infection and ventilator pneumonia. In order to solve the problems of the trachea cannula, the trachea cannula becomes a great technical problem. Disclosure of utility model The utility model aims to provide an inflation-free tracheal cannula, which is of a conical structure with a truncated cone shape and an umbrella-shaped conical structure when being unfolded, so that the operation procedure of medical staff can be reduced, the tracheal cannula is suitable for airway anatomy structures of different patients, the necrosis of airway mucosa of the patients caused by excessive inflation can be reduced, the scar stenosis after operation can be reduced, the pneumonitis related to a respirator caused by too little inflation or by wrinkling of the inflation-free cuff, the shedding of the tracheal cannula caused by the movement of the patients in operation can be reduced, and secretions or gastric reflux can be more easily received when the secretions enter the airway of the patients. In order to achieve the above purpose, the utility model adopts the following technical scheme: The inflation-free trachea cannula comprises a trachea cannula tube body and a connector, wherein an inflation-free cuff is arranged at the patient end of the trachea cannula tube body, a pulling rope is connected with the inflation-free cuff after passing through the trachea cannula tube body and used for controlling the contraction of the inflation-free cuff and further realizing the relaxation of the inflation-free cuff so as to seal the airway of a patient, and the inflation-free cuff is of a cone-shaped structure. The inflation-free cuff can be of different specifications and different sizes of truncated cones, and can be used for any airway product, such as a double-cavity bronchial cannula, a single-cavity bronchial cannula, a tracheostomy cannula and the like. Not limited to any cannula type product. Preferably, the inflation-free cuff comprises a conical cuff body with a round table, a contraction wire, a sliding ring and at least one reinforcing rib, wherein one end of the reinforcing rib is fixed inside the cuff body, the other end of the reinforcing rib is connected with the sliding ring, the inflation-free cuff is used for enabling the cuff to contract under the action of the contraction wire when a pull rope is pulled, and the inflation-free cuff is used for enabling the cuff to automatically open according to the size of an air passage under the action of the supporting rib after the contraction wire is loosened. Preferably, the tail end of the pull rope is connected with a pull ring for controlling the contraction of the cuff. Preferably, the inflation-free cuff is a PVC material or a PU material or a TPE material. Preferably, the reinforcing ribs and the cuff are integrally injection molded or bonded. Preferably, the reinforcing rib is provided with a flexible wrapping layer for protecting the airway mucosa from damage. Preferably, the tracheal cannula tube body is provided with at least one suction hole, and the suction hole is close to the root of the cuff and is used for better sucking secretion of a patient. Preferably, a suction tube and a suction joint are further arranged at the machine end of the tracheal cannula body. Due to the adoption of the structure, the utility model has the following beneficial effects: The utility model provides an