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CN-122006047-A - Tracheal catheter system for emergency airway management

CN122006047ACN 122006047 ACN122006047 ACN 122006047ACN-122006047-A

Abstract

The invention discloses an endotracheal tube system for emergency airway management, which relates to the technical field of medical instruments and comprises a bronchoscope insertion part, a connecting frame, a conduit framework, a release wire, a first magnetic component and a filling air bag, wherein the bronchoscope insertion part is used for guiding the system to enter an trachea under a visual condition, the connecting frame is used for fixing and positioning each module, the conduit framework is made of biocompatible materials with shape memory characteristics, preferably a net structure woven by super-elastic nitinol wires and is provided with a radial compression state and a radial expansion state, the release wire is connected with the conduit framework and used for triggering the radial expansion of the framework, the first magnetic component is arranged at the proximal end of the conduit framework and used for filling the air bag and used for realizing sealing in the trachea, the effective ventilation time is shortened by 40% -60%, and the bronchoscope occupation time is shortened by more than 80%. In particular, the time from the occurrence of bleeding to the establishment of effective ventilation can be controlled within 30 seconds, the magnetically attractive modular assembly process only takes 5-10 seconds, and the bronchoscope can be released within 1 minute after ventilation establishment, thereby winning valuable time for subsequent rescue.

Inventors

  • TANG YUFEI

Assignees

  • 长沙市第三医院

Dates

Publication Date
20260512
Application Date
20260409

Claims (10)

  1. 1. An endotracheal tube system for emergency airway management, comprising: A bronchoscope insertion (1) for guiding the system under visual conditions into the trachea; A catheter skeleton (3), the catheter skeleton (3) being made of a shape memory material, having a radially compressed state and a radially expanded state, the proximal end of which is provided with a first magnetic attraction assembly (6); The air bag module comprises a filling air bag (7) and a ventilation pipeline (8), and a second magnetic component (11) matched with the first magnetic component (6) is arranged at the far end of the air bag module; A release wire (5) connected to the catheter skeleton (3) for triggering the transition of the catheter skeleton (3) from a radially compressed state to a radially expanded state; and the far end of the external connector (16) is provided with a fourth magnetic component (15) which is used for being in magnetic attraction butt joint with the third magnetic component (14) at the near end of the air bag module.
  2. 2. An endotracheal tube system for emergency airway management according to claim 1, characterized in that the tube skeleton (3) is made of a mesh structure woven of superelastic nitinol wires, the austenitic phase transition ending temperature (Af) of which is set to 34-36 ℃.
  3. 3. An endotracheal tube system for emergency airway management according to claim 1, wherein the tube skeleton (3) has an outer diameter of 3-5mm in a radially compressed state and 7.0-8.5mm in a radially expanded state.
  4. 4. The tracheal catheter system for emergency airway management as claimed in claim 1, wherein the first magnetic attraction component (6) and the second magnetic attraction component (11) are in error-proof butt joint through permanent magnets which are arranged asymmetrically, and the butt joint force is 5-10N.
  5. 5. An endotracheal tube system for emergency airway management according to claim 1, wherein the release wire (5) extends from the distal end to the proximal end of the tube skeleton (3), pulling on which wire releases the radial constraint on the tube skeleton (3).
  6. 6. An endotracheal tube system for emergency airway management according to claim 1, characterized in that the filling balloon (7) is of low pressure high volume design, the material being medical grade polyurethane or silicone.
  7. 7. An endotracheal tube system for emergency airway management according to claim 1, wherein the external connector (16) is provided with a standard 15mm ventilator interface.
  8. 8. An endotracheal tube system for emergency airway management according to claim 1, wherein the system further comprises a tie down mechanism for securing the conduit skeleton (3) in a radially compressed state to the outer surface of the bronchofiberscope insert (1).
  9. 9. An endotracheal tube system for emergency airway management according to claim 1, characterized in that the porosity of the tube skeleton (3) is 30% -50%.
  10. 10. An endotracheal tube system for emergency airway management according to claim 1, characterized in that the system further comprises a connection frame (2), a first connection tube (9), a connection tube (12) and a second connection tube (13) for achieving a fixed and ventilated connection between the modules.

Description

Tracheal catheter system for emergency airway management Technical Field The invention relates to the technical field of medical equipment, in particular to an endotracheal tube system for emergency airway management, which is particularly suitable for rapid airway establishment under the condition of visual field loss such as acute massive hemorrhage in bronchofiberscope operation. Background The fiberoptic bronchoscope (fiberoptic bronchoscope) examination and treatment are core means of respiratory disease diagnosis and treatment, and are widely applied to diagnosis of diseases such as lung shadow, hemoptysis, airway stenosis and the like and endoscopic interventional treatment. However, the bleeding risk associated with the procedure itself, especially fatal massive bleeding, is always a serious challenge in clinical practice. The international and domestic consensus defines the major bleeding associated with bronchofiberscope procedures as "acute bleeding with single bleeding of the lower respiratory tract not less than 100 ml". The bleeding is violent, and can submerge the glottis and the main bronchus within tens of seconds, so that the patient is quickly trapped in a choking state. Although the overall incidence is about 0.1% -5%, mortality is extremely high once it occurs. At present, there is a significant clinical dilemma for the emergency treatment of acute massive hemorrhage in bronchofiberscope surgery: Under the traditional laryngoscope, the laryngoscope can not expose glottis under the condition that blood completely shields the visual field, and the intubation becomes blind detection operation. Under difficult airway conditions, the success rate of traditional laryngoscope intubation is significantly reduced, and repeated attempts can delay rescue opportunities and exacerbate airway damage. The lens is instantly covered by blood and completely loses visibility when the mobility is great although the visualization technology is adopted as a cannula under the guidance of a bronchoscope. Meanwhile, standard operation requires that the bronchoscope is withdrawn from the tracheal catheter, and the process is tedious and time-consuming. More importantly, the bronchofiberscope is occupied until the patient is stably transported, which constitutes a serious resource limitation in the treatment of patients at high risk of bleeding. The application of the advanced rescue measures is limited by high technical requirements, long preparation time and the like of a double-lumen tube, a bronchus blocking balloon, even an external membrane pulmonary oxygenation (ECMO), and the like, and can not be used as a first-line and universal first-aid scheme. There is a fundamental contradiction in the prior art that a bronchoscope is an ideal guiding tool for establishing difficult airway passages, but the conventional endotracheal tube that it guides itself "traps" the bronchoscope so that it cannot be quickly withdrawn for subsequent treatment or for other patients in an emergency. In addition, the rigid structure of conventional endotracheal tubes is susceptible to damage when passing through tortuous, narrow airways. Studies have shown that the incidence of airway damage associated with endotracheal intubation can reach 15% -20%, where mismatch of the catheter and airway is a major risk factor. Accordingly, one skilled in the art would provide an endotracheal tube system for emergency airway management that addresses the problems set forth in the background above. Disclosure of Invention In view of the shortcomings of the prior art, the present invention provides an endotracheal tube system for emergency airway management that solves the problems presented by the background art described above. The tracheal catheter system for emergency airway management comprises a bronchoscope insertion part, a connecting frame, a connecting catheter, a release wire, a first magnetic suction assembly, a filling air bag, a ventilation pipeline, a first connecting pipe, a second magnetic suction assembly, a connecting catheter, a second connecting pipe, a third magnetic suction assembly and a standard breathing machine, wherein the bronchoscope insertion part is used for guiding the system to enter a trachea under a visual condition, the connecting frame is used for fixing and positioning all modules, the catheter skeleton is made of biocompatible materials with shape memory characteristics, preferably a net structure woven by super-elastic nitinol wires and is provided with a radial compression state and a radial expansion state, the release wire is connected with the catheter skeleton and used for triggering radial expansion of the skeleton, the first magnetic suction assembly is arranged at the proximal end of the catheter skeleton, the filling air bag is used for sealing in the trachea, the ventilation pipeline is connected with the filling air bag and used for inflating and deflating, the first connecting pipe is used for