Tracheal catheter

Abstract

The utility model discloses a tracheal catheter, which relates to the technical field of medical instruments, and comprises a catheter body, a gas cuff and a liquid cuff, and a channel for ventilation is constructed in the catheter body; the catheter body is sleeved with the air sleeve bag, and the air sleeve bag is communicated with an inflation and exhaust pipe. When the liquid sleeve bag is in a liquid filling state, a medicine cavity is formed between the inner wall of the liquid sleeve bag and the outer wall of the air sleeve bag; the medicine cavity is communicated with a medicine filling and discharging pipe, a plurality of liquid passing holes are formed in the liquid sleeve bag, each liquid passing hole has a contraction state and an expansion state, and when the pressure of liquid in the medicine cavity is smaller than a first pressure value, the liquid passing holes are in the contraction state; when the liquid pressure in the medicine cavity is not smaller than the first pressure value, the liquid passing hole is in an expanded state. According to the tracheal catheter, medicine can be administrated to the tracheal tissue surface of a patient under the condition that the tracheal catheter is not pulled out, and liquid medicine can be anesthetic or other liquid medicine, so that damage to the airway mucosa of the patient can be weakened, discomfort and stress reaction are relieved, and smooth operation is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, in particular to a tracheal catheter. BACKGROUND

[0002] Tracheal catheter is inserted into the trachea and / or bronchus of patient, creates a temporary artificial breathing passage for patient, especially for patient who cannot breathe independently, usually uses air bag to fix, air bag long-term compression tracheal mucosa of human body, easily leads to tracheal tissue surface swelling, brings the discomfort to patient, especially in the process of extubation, most patients have stress reaction, based on this, there is an urgent need for a new scheme to solve the above problems. SUMMARY

[0003] The utility model aims at providing a tracheal catheter to solve the above-mentioned problems of prior art, which is beneficial to the smooth operation of surgery and improves the treatment experience of patients.

[0004] To achieve the above-mentioned purpose, the utility model provides the following scheme:

[0005] The utility model provides a tracheal catheter, which comprises:

[0006] A catheter body is internally structured with a passage for ventilation;

[0007] An air sleeve bag is sleeved on the catheter body, and the air sleeve bag is communicated with a charging and discharging pipe;

[0008] A liquid sleeve bag is sleeved outside the air sleeve bag, and a drug cavity is formed between the inner wall of the liquid sleeve bag in the liquid-filled state and the outer wall of the air sleeve bag; the drug cavity is communicated with a charging and discharging pipe, the liquid sleeve bag is provided with a plurality of liquid passing holes, the liquid passing holes have a contraction state and an expansion state, when the liquid pressure in the drug cavity is less than a first pressure value, the liquid passing holes are in the contraction state, and when the liquid pressure in the drug cavity is not less than the first pressure value, the liquid passing holes are in the expansion state.

[0009] Preferably, the liquid sleeve bag is made of a flexible film, and the liquid sleeve bag is uniformly provided with the liquid passing holes.

[0010] Preferably, when the liquid pressure in the drug cavity is not less than the first pressure value, the outer surface of the liquid sleeve bag is uneven, and a liquid storage cavity is formed between the surface concave part of the liquid sleeve bag and the tracheal tissue surface.

[0011] Preferably, a miniature camera is arranged at the distal end or the part close to the distal end of the catheter body.

[0012] Preferably, part of the liquid passing holes in the expansion state are directed to the two sides of the liquid sleeve bag in the axial direction.

[0013] The present invention achieves the following technical advantages over the prior art:

[0014] This invention enables the administration of medication to the tracheal tissue surface of a patient without removing the endotracheal tube. The medication can be an anesthetic or other medication, thereby reducing damage to the patient's airway mucosa, alleviating discomfort and stress response, facilitating the smooth progress of surgery, and reducing the incidence of hemodynamic fluctuations during extubation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Fig. 1 This is a schematic diagram of the structure of the endotracheal tube provided in an embodiment of the present utility model;

[0017] Fig. 2 This is a schematic diagram of the structure of part of the liquid-filled cuff and the tracheal tissue surface in the expanded state;

[0018] Fig. 3 This is a schematic diagram of another structure of the partially inflated liquid-filled cuff and tracheal tissue surface.

[0019] In the diagram: 1-Catheter body; 2-Liquid balloon; 3-Pneumatic balloon; 4-Drug chamber; 5-Inflation / extension tube; 6-Inflation / extension tube; 7-Tracheal tissue surface; 8-Reservoir. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] The following is combined with Figs. 1 to 3 The following describes embodiments of the present invention.

[0023] This utility model provides an endotracheal tube, such as Fig. 1 As shown, it includes: catheter body 1, pneumatic balloon 3 and liquid balloon 2.

[0024] The catheter body 1 can be a double-limb catheter or a single-limb catheter, and a passage for ventilation is formed in the catheter body 1; the gas sleeve 3 is sleeved on the catheter body 1, and the gas sleeve 3 is communicated with a gas charging and discharging pipe 6; the liquid sleeve 2 is sleeved outside the gas sleeve 3, and a medicine cavity 4 is formed between the inner wall of the liquid sleeve 2 in a liquid-filled state and the outer wall of the gas sleeve 3; the medicine cavity 4 is communicated with a medicine charging and discharging pipe 5, and the liquid sleeve 2 is provided with a plurality of liquid passing holes, the liquid passing holes have a contraction state and an expansion state, the liquid passing holes are in the contraction state when the liquid pressure in the medicine cavity 4 is less than a first pressure value, and the liquid passing holes are in the expansion state when the liquid pressure in the medicine cavity 4 is not less than the first pressure value.

[0025] The utility model discloses a catheter for giving medicine to the tracheal tissue surface 7 of the patient without pulling out the tracheal catheter, the medicine liquid can be an anesthetic or other medicine liquid, and thus the discomfort and stress reaction of the patient can be reduced, and the operation can be smoothly performed.

[0026] It is explained that the medicine liquid can be an anesthetic, an anti-inflammatory drug or an antibiotic, etc., an air cavity is formed between the inner wall of the gas sleeve 3 and the outer wall of the catheter body 1, the air cavity is communicated with the gas charging and discharging pipe 6, the liquid sleeve 2 is made of a flexible film, the flexible film must have a certain elasticity, under the action of the resilience of the material of the flexible film, the liquid passing holes are contracted and closed when the liquid pressure is less than the first pressure value, and when the pressure is greater than or equal to the first pressure value, the material elasticity is overcome and the liquid passing holes are expanded and opened.

[0027] In use, the tracheal catheter is placed into the trachea, and then the gas sleeve 3 is inflated to a set air pressure value, at this time, the catheter body 1 is fixed in the trachea, when redness and swelling of the tracheal tissue surface 7 of the patient or the patient indicates discomfort during the operation, a part or all of the gas in the gas sleeve 3 is discharged, then the medicine liquid is filled into the medicine cavity 4 and is not less than the first pressure value, after a period of time, the patient is relieved, the remaining medicine liquid in the medicine cavity 4 is discharged, and then the gas sleeve 3 is inflated to the set air pressure value again to fix the tracheal catheter.

[0028] In some embodiments, the gas charging and discharging pipe 6 and the medicine charging and discharging pipe 5 can be arranged to pass out of the passage in the catheter body, can be arranged to pass out of the catheter body, or can be arranged in the wall of the catheter body, i.e., the gas charging and discharging pipe 6 and the medicine charging and discharging pipe 5 are arranged between the inner wall and the outer wall of the catheter body.

[0029] In some embodiments, the liquid sleeve 2 is uniformly provided with the liquid passing holes.

[0030] The embodiment can uniformly flow the medicine liquid from the surface of the liquid sleeve 2, and thus the tracheal tissue surface 7 can uniformly contact the liquid medicine, and the medicine effect is improved. Of course, the liquid passing holes can also be arranged on part of the liquid sleeve 2 according to requirements.

[0031] In some embodiments, as shown in Figs. 2 to 3 When the liquid pressure in the medicine cavity 4 is not less than the first pressure value, the outer surface of the liquid jacket 2 is uneven, and the concave part of the surface of the liquid jacket 2 forms a liquid storage cavity 8 with the tracheal tissue surface 7.

[0032] In this embodiment, the uneven surface is arranged to avoid the tracheal tissue surface 7 from blocking the liquid hole due to the close contact between the liquid jacket 2 and the tracheal tissue surface 7, and the liquid storage cavity 8 formed can make the medicine liquid stay on the tracheal tissue surface 7, avoiding the loss of the medicine liquid. In other words, this embodiment can slow down the flow speed of the medicine liquid on the tracheal tissue surface 7, thereby improving the drug delivery effect.

[0033] The uneven surface can be a corrugated uneven surface, a dimple-shaped uneven surface, etc., which is not limited herein.

[0034] In some embodiments, a miniature camera is arranged at the distal end or a position close to the distal end of the catheter body 1.

[0035] The product provided in this embodiment can be called a visual tracheal catheter. The miniature camera can take images or videos and transmit them to a computer display for display. Specifically, the miniature camera can transmit power or image information through an optical fiber or an electric wire arranged in the catheter body 1. In addition, in other embodiments, the miniature camera can be internally powered.

[0036] In some embodiments, part of the liquid holes in the expanded state are directed to both sides of the liquid jacket 2 in the axial direction.

[0037] In this embodiment, in the initial stage of drug delivery, the medicine cavity 4 is filled with medicine liquid, and the liquid pressure is not less than the second pressure value. The medicine liquid at the second pressure value can be ejected from the liquid holes. This can make the medicine liquid be ejected from the liquid holes on both sides of the liquid jacket 2 to the tracheal tissue surface 7 on both sides of the gas jacket 3, thereby increasing the drug delivery range. After 1-3 seconds of ejection, the pressure in the medicine cavity 4 can be reduced to the first pressure value or lower than the first pressure value.

[0038] The utility model also provides a tracheal catheter using method, including:

[0039] The method of fixing the trachea comprises:

[0040] Step one, place the tracheal catheter into the trachea;

[0041] Step two, inflate the gas jacket 3 to the set air pressure value;

[0042] The method of drug delivery comprises:

[0043] Step one, release part or all of the gas in the gas jacket 3;

[0044] Step two, fill the medicine cavity 4 with medicine liquid and make it not less than the first pressure value, and last for a period of time;

[0045] Step three, discharge the remaining medicine liquid in the medicine cavity 4;

[0046] Step four, inflate the air sleeve 3 to the set air pressure value.

[0047] The embodiment adopts the tracheal tube provided in the above embodiment, and therefore has all the advantages of the above embodiment, which will not be repeated here.

[0048] In some embodiments, in step two of the administration method, after filling the medicine cavity 4 with medicine liquid, the pressure value of the medicine liquid in the medicine cavity 4 is maintained not less than the first pressure value by inflating the air sleeve 3.

[0049] The embodiment helps to save the amount of medicine liquid and still achieve the purpose of administration.

[0050] In some embodiments, in step three of the administration method, the remaining medicine liquid in the medicine cavity 4 can be discharged from the liquid passage by inflating the air sleeve 3.

[0051] The embodiment helps to fully utilize the medicine liquid in the liquid sleeve 2.

[0052] It is to be noted that the connection between the liquid sleeve 2 and the air sleeve and the tracheal tube body 1 is a mature prior art, and the present application does not improve it, which will not be repeated here.

[0053] In some embodiments, part of the liquid passage in the expanded state is directed to both sides of the liquid sleeve 2 in the axial direction; in step two of the administration method, the medicine cavity 4 is filled with medicine liquid and the pressure value is not less than the second pressure value, and the medicine liquid at the second pressure value can be ejected from the liquid passage.

[0054] It is to be noted that the first pressure value and the second pressure value need to be determined according to experiments, and there is no fixed value, which is related to the type of flexible film used.

[0055] The flexible film in any of the above embodiments is a medical film.

[0056] The principle and implementation mode of the present application are described in the specific examples in the present application, and the above examples are only used to help understand the method and core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed. In view of the above, the content of the specification should not be understood as a limitation of the present application.

Claims

1. An endotracheal tube, characterized by: The application relates to a tracheal catheter, comprising: a catheter body, which is internally provided with a channel for ventilation; an air jacket bag, which is sleeved on the catheter body and is communicated with a gas charging and discharging pipe; a liquid jacket bag, which is sleeved outside the air jacket bag, and in a liquid-filled state, an inner wall of the liquid jacket bag and an outer wall of the air jacket bag form a medicine cavity; the medicine cavity is communicated with a medicine charging and discharging pipe; the liquid jacket bag is provided with a plurality of liquid passing holes, the liquid passing holes have a contraction state and an expansion state, when the liquid pressure in the medicine cavity is less than a first pressure value, the liquid passing holes are in the contraction state; when the liquid pressure in the medicine cavity is not less than the first pressure value, the liquid passing holes are in the expansion state; wherein the contraction and expansion states of the liquid passing holes are actively controlled by the pressure of the medicine cavity to realize on-demand drug delivery; when the liquid pressure in the medicine cavity is not less than the first pressure value, the outer surface of the liquid jacket bag is uneven, and the surface concave part of the liquid jacket bag forms a liquid storage cavity with the tracheal tissue surface.

2. The tracheal tube of claim 1, wherein: The liquid jacket bag is made of a flexible film, and the liquid jacket bag is uniformly provided with the liquid passing holes.

3. The tracheal tube of claim 1, wherein: A micro camera is arranged at the distal end or a position close to the distal end of the catheter body.

4. The tracheal tube of claim 1, wherein: The liquid passing holes in the partial expansion state are axially oriented to both sides of the liquid jacket bag.

Images