CN217041007U - Low-damage ventilation catheter - Google Patents

Abstract

The utility model discloses a low-damage ventilation catheter, which comprises a cover body and a main body tube, wherein the cover body is attached to the surface of the upper respiratory tract and the throat of a human body, the main body tube is connected with one end of the cover body, the cover body is of a ventral side surface and is provided with an open cavity structure, the cover body can be automatically shaped according to the structural characteristics of throat anatomy, a ventilation channel and a drainage channel are arranged in the main body tube along the length direction of the main body tube, the ventilation channel is communicated with the cover body, the front end of the cover body is provided with a drainage port, the drainage channel penetrates through the cover body and is communicated with the drainage port, and the drainage channel and the cavity structure of the cover body are mutually independent; a supporting piece for supporting the cover body is arranged in the cavity structure of the cover body. The design of the independent drainage channel of the laryngeal mask reduces the aspiration caused by the backflow of the esophagus, and the laryngeal mask is safer in clinical application; the laryngeal mask has an airway exploration function, and meets the requirements of exploration, diagnosis and treatment of clinical upper airways; at the same time, can be used as a tool for guiding the tracheal intubation in the case of an unexpectedly difficult airway.

Description

A low-invasive ventilation catheter

technical field

The utility model relates to the technical field of medical consumables, in particular to a low-damage ventilation catheter.

Background technique

Laryngeal mask as an effective means for airway management of patients, especially because laryngeal mask can effectively establish a safe artificial airway in general anesthesia surgery, it has been widely used in clinical practice. At present, various improved laryngeal masks have been used in clinical practice, but the existing laryngeal masks still have many shortcomings. First, the single-tube laryngeal mask does not have the structural design of esophageal drainage, which makes the single-tube laryngeal mask at risk of gastric distension and gastric reflux and aspiration during ventilation; secondly, the single-tube laryngeal mask is inflated The airbag type structure is designed with a free inflatable device to realize the inflation of the airbag. When using it, the doctor needs a professional assistant to assist it in the inflation operation. The clinical application is very inconvenient and is not conducive to the establishment of a rapid artificial airway. In addition, there is also a double-tube laryngeal mask that is widely used clinically. Although the esophageal drainage tube is added to the double-tube laryngeal mask, it is still an inflatable balloon structure, which makes it still exist in the process of balloon inflation management, especially In the process of establishing an emergency airway, it takes time to inflate the airbag, which is not conducive to the rapid establishment of an artificial airway. In addition, in the process of inflation, it is difficult to control the air pressure of the air bag, and there is a certain risk in relying solely on the doctor's experience to make judgments. During the process, the risk of edema of the laryngopharyngeal mucosa of the patient is increased, and the probability of postoperative sore throat is also likely to increase.

Utility model content

In order to solve the above technical problems, the utility model provides a low-damage ventilation catheter.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present utility model is: a low-damage ventilation catheter, comprising a cover body fitted with the surface of the upper respiratory tract and throat of a human body and a main body pipe connected with one end of the cover body, and the cover body is The ventral side is provided with an open cavity structure, which can be automatically shaped according to the anatomical characteristics of the throat. The main body tube is provided with a ventilation channel and a drainage channel along its length direction, and the ventilation channel is communicated with the cover body. The drainage port runs through the cover body and communicates with the drainage port. The drainage channel and the cavity structure of the cover body are independent of each other; the cavity structure of the cover body is provided with a support for supporting the cover body.

Preferably, a connecting piece is fixedly connected in the cavity structure of the cover body, the connecting piece is provided with a ventilation hole communicating with the ventilation channel, the ventilation hole is located below the opening at the top of the cover body, and the connecting piece is also provided with a guide hole, The guide hole communicates with the air hole and the cavity structure of the cover body, the contour shape of the support piece is adapted to the inner cavity of the cover body, and the edge of the cover body opening is fixedly connected to the outer side wall of the support piece, and the support piece is provided with There is a through hole matched with the ventilation hole, the edge of the through hole is flush with the top of the connecting piece, and the edge of the through hole is fixedly connected with the connecting piece; the bottom of the supporting piece is arranged against the connecting piece, and the bottom of the supporting piece is provided with a The cavity structure of the cover body communicates with the channel, and the channel is also communicated with the guide hole.

Preferably, the passage includes a way-out slot, which is arranged along the length direction of the support member, and a way-out hole is opened at the front end of the way-in slot, and the way-out hole is arranged in a V-shape.

Preferably, the channel further includes air guide grooves located on both sides of the abdication hole and circumferentially arranged along the edge of the support member.

Preferably, an arc-shaped epiglottis table is fixedly connected to the top of one end of the connecting piece close to the main body tube, and the epiglottis table protrudes from the top surface of the support piece.

Preferably, the ventilation channel and the drainage channel are independent of each other, and the longitudinal section of the ventilation channel is elliptical, and an end of the main body pipe away from the cover body is installed with a connecting pipe, and the connecting pipe includes a ventilation pipe that communicates with the ventilation channel, and the connecting pipe also It includes a drainage tube communicated with the drainage channel, and the drainage tube is fixedly connected to the outer side wall of the ventilation tube.

Preferably, the main body tube, the cover body, and the connecting piece are all integrally formed, and the materials thereof are selected from materials with the same Shore hardness, and the Shore hardness of the material is B, B≤75D; the supporting piece is integrally formed as a prefabricated piece, And its material is selected from materials with Shore hardness A, A≤45D.

Preferably, the included angle between the central axis of the cover body in the longitudinal direction and the extension line of the main body tube in the longitudinal direction is α, and the range of α is: 100°≤α≤150°.

Preferably, a first step is provided on the inner wall of the ventilation channel close to one end of the ventilation tube, the end of the ventilation tube is adapted to the first step, and the ventilation tube is inserted into the ventilation channel; the inner wall of the drainage channel close to one end of the drainage tube is provided with There is a second step, the end of the drainage tube is matched with the second step, and the drainage tube is inserted into the drainage channel.

Preferably, the connecting tube and the main body tube are respectively integrally formed, and the Shore hardness of the material of the main body tube is smaller than the Shore hardness of the material of the connecting tube.

The beneficial effects of the utility model are as follows: (1) the laryngeal mask has the function of esophageal drainage, and the design of the independent drainage channel reduces the aspiration caused by esophageal reflux, and is safer in clinical application; the laryngeal mask has the function of airway exploration. Function, the flexible video laryngoscope can enter the airway through the ventilation channel through the glottis, meeting the requirements of clinical airway exploration and diagnosis and treatment; at the same time, it can be used as a tool to guide tracheal intubation in unexpectedly difficult airway conditions.

(2) The laryngeal mask adopts a structural design that combines pre-shaping and automatic shaping. The mask body can be automatically shaped according to the structural characteristics of the oropharyngeal cavity to fit the surface of the patient's throat to achieve sealing ventilation, self-charging/exhausting type. The cavity structure is based on the rhythm of the patient's spontaneous breathing to realize the inflation and exhaust of the cavity structure of the cover body, so as to realize the automatic adjustment of the volume of the cover body, so that the cover body can be in a filling state intermittently, which makes the cover body The pressure on the tissue around the throat of the patient is reduced, the continuous compression on the local tissue of the patient is reduced, and the risk of compressive injury to the local tissue of the patient is reduced.

(3) It is convenient to drain the gas entering the support by setting air guide grooves, giving way grooves and giving way holes, and diverting these gases to various areas of the cover body, so that each area of the cover body can be quickly realized. Inflating or exhausting, improving the efficiency of charging and exhausting.

(4) By setting the epiglottis table to reduce the patient's epiglottis reflex, to a certain extent, improve the ventilation safety.

In general, the laryngeal mask provided by the utility model is simple and fast in clinical application, and causes less damage to the patient, can quickly, safely and effectively establish an artificial airway, and can improve the management of the artificial airway by medical staff. Level.

Description of drawings

Fig. 1 is the structural representation of the utility model;

2 is a schematic diagram 1 of the connection relationship between the cover body and the main body pipe of the present invention;

3 is a schematic diagram 2 of the connection relationship between the cover body and the main body pipe of the present invention;

4 is a schematic diagram 3 of the connection relationship between the cover body and the main body pipe of the present invention;

5 is a schematic structural diagram of a support member of the present invention;

6 is a schematic view of the back side structure of the support member of the present invention;

FIG. 7 is a schematic structural diagram of the connecting pipe of the present invention.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings.

A low-damage ventilation catheter, as shown in Figures 1 to 4, comprises a cover body 1 that fits with the surface of the upper respiratory tract and throat of the human body and a main body tube 2 that is connected to one end of the cover body 1, and the cover body 1 is opened on the ventral side. There is a cavity structure with an opening 3 and it can be automatically shaped according to the anatomical characteristics of the throat. The opening 3 of the mask body 1 can be selected from but not limited to a circle, and the area of the opening 3 is smaller than the area of the ventral side of the mask body 1. 2 is provided with a ventilation channel 5 and a drainage channel 6 along its length direction. The ventilation channel 5 is communicated with the cover body 1 and is provided with a drainage port 7 at the front end of the cover body 1. The drainage channel 6 penetrates the cover body 1 and is connected with the drainage port 7. The drainage channel 6 and the cavity structure of the cover body 1 are independent of each other. In this embodiment, in order to realize the independence of the drainage channel 6 and the cavity structure of the cover body 1, the bottom of the inner wall of the cover body 1 is connected with the drainage channel 6. The drainage cavity 8 is connected to the drainage cavity 8, the drainage cavity 8 is arranged protruding from the bottom of the inner wall of the cover body 1, and the front end of the drainage cavity 8 is communicated with the drainage opening 7, that is, the drainage cavity 8 is connected with the drainage channel 6 and the drainage opening 7. The esophageal orifice was occluded anastomosis. By opening the drainage port 7, the drainage channel 6 and the drainage cavity 8, it is convenient to insert a gastric tube to prevent the occurrence of gastric flatulence and gastric reflux, and the gastric contents can be drained and cleaned in real time to reduce the occurrence of aspiration probability. A support member 12 for supporting the mask body 1 is installed in the cavity structure of the cover body 1 .

Specifically, as shown in FIGS. 1 to 6 , the cavity structure of the cover body 1 is fixedly connected with a connecting piece 9 , and the connecting piece 9 is provided with a ventilation hole 10 that communicates with the ventilation channel 5 , and the ventilation hole 10 is located in the cover body. 1. Below the top opening 3, a guide hole 11 is also opened on the side wall of the connector 9. The position of the guide hole 11 is preferably close to the side of the ventilation channel 5, and the guide hole 11 communicates with the ventilation hole 10 and the cover body 1. The shape of the support member 12 is adapted to the internal cavity of the cover body 1, and the edge of the opening 3 of the cover body 1 is fixedly connected to the outer side wall of the support member 12, and the ventral side of the support member 12 is opened. There is a through hole 13 adapted to the vent hole 10 , the edge of the through hole 13 is flush with the top of the connecting piece 9 and the edge of the through hole 13 is fixedly connected with the connecting piece 9 , and the bottom of the support piece 12 abuts against the connecting piece 9 The supporting member 12 is provided with an arc-shaped notch 14 that is adapted to the connecting member 9. The supporting member 12 is provided with a channel that communicates with the cavity structure of the cover body 1. At the same time, the channel is also connected to the guide hole 11. Pass. Through this arrangement, the ventilation hole 10 of the laryngeal mask is communicated with the ventilation channel 5, and at the same time, the ventilation hole 10 is communicated with the guide hole 11, and the gas enters the cavity structure of the mask body 1 through the ventilation hole 10 and the guide hole 11. , so as to realize the inflation of the cover body 1 . Specifically, oxygen can independently ventilate and exhaust the patient's lungs through the ventilation channel 5 and through the ventilation hole 10 and the patient's glottis; at the same time, the mask body 1 can adjust its volume according to the patient's self-help breathing, When the patient is in the state of positive pressure gas supply, the gas enters the cavity structure of the cover body 1 through the ventilation port and the guide hole 11, so that the cavity structure inside the cover body 1 is in a filling state, and the cover body 1 expands so that it is inflated to the patient. The pressure exerted by the mucous membrane of the throat increases, and the tightness is enhanced; when the patient is in the state of exhalation, the air pressure in the cavity structure of the cover body 1 decreases, and the gas in the cavity structure of the cover body 1 is discharged through the guide hole 11, The mask body 1 is in a collapsed state, and the pressure exerted by the mask body 1 on the mucosal tissue around the patient's throat is reduced, thereby reducing the continuous compression of the mask body 1 on the patient's throat and reducing the risk of compressive injury to the patient's local tissue. risk.

Further, as shown in FIG. 5 and FIG. 6 , the channel includes a ceding slot 15 that is adapted to the drainage cavity 8 , the ceding slot 15 is arranged along the length direction of the support member 12 , and the front end of the ceding slot 15 is opened. There is an escape hole 16 matched with the drainage cavity 8 , and the escape hole 16 is arranged in a V shape. By arranging the abdication holes 16 and the abdication grooves 15, on the one hand, the drainage cavity 8 is provided, which facilitates the setting of the drainage cavity 8. The hollow structure reduces its weight and reduces the continuous compression of the patient's local tissue that may occur with solid materials; in addition, the gas passing through the diversion hole 11 is drained through the drainage groove 15 and the abdication hole 16. In the cavity structure of the cover body 1, all areas of the cover body 1 can be filled and shaped to ensure the sealing effect; at the same time, the setting of the escape groove 15 and the escape hole 16 reduces the input of the material of the support member 12, so as to ensure the sealing effect. The material cost is reduced to a certain extent.

Further, as shown in FIG. 5 and FIG. 6 , the channel further includes air guide grooves 17 located on both sides of the escape hole 16 and circumferentially disposed along the edge of the support member 12 . By arranging the air guide grooves 17, the hollow ratio of the support member 12 is further improved, and the supportive compression of the support member 12 on the local tissue of the patient is reduced. At the same time, the air guide grooves 17 further expand the gas circulation space in the support member 12. , and then improve the efficiency of gas filling and discharge in the cover body 1, that is, the gas entering the support 12 through the guide hole 11 is transported to the cavity of the cover body 1 through the escape groove 15 and the escape hole 16, and at the same time, Part of the gas is also transported into the cavity of the cover body 1 through the air guide groove 17 , which improves the efficiency of filling and collapsing the cavity of the cover body 1 .

Further, as shown in FIGS. 1-4 , an epiglottis table 18 is fixedly connected to the top of the connector 9 near one end of the main body tube 2 , and the epiglottis table 18 is disposed protruding from the top surface of the support member 12 . The epiglottis table 18 is preferably arranged in an arc shape. Because the epiglottis table 18 protrudes from the top surface of the support member 12, the epiglottis table 18 can effectively support and guide the sliding of the epiglottis cartilage, reduce epiglottis reflex, and reduce the blockage of the ventilation hole 10 close to the main body tube 2. The probability of causing the problem of poor ventilation improves the safety of ventilation, expands the hyperbaric oxygen cloud area at the patient's vocal door, and enhances the effect of airway sealing ventilation.

Optionally, the ventilation channel 5 and the drainage channel 6 are independent of each other, and the longitudinal section of the ventilation channel 5 is oval, which prevents aspiration caused by esophageal reflux, and is safer in clinical application. At the same time, the oval ventilation channel 5 is convenient for Endotracheal intubation and fiberoptic bronchoscopy are used to facilitate lung exploration and diagnosis and treatment. One end of the main body pipe 2 away from the cover body 1 is installed with a connecting pipe. The connecting pipe includes a ventilation pipe 19 that communicates with the ventilation channel 5. The connecting pipe also includes a drainage pipe 20 that communicates with the drainage channel 6. The drainage pipe 20 is fixedly connected to the ventilation channel. on the outer side wall of the trachea 19. By setting the connecting tube, the laryngeal mask has the functions of airway exploration and guiding tracheal intubation. When in use, both the flexible video laryngoscope and the tracheal intubation can enter the airway through the glottis through the ventilation channel 5 of the connecting tube. Meet the requirements of clinical airway exploration and diagnosis and emergency intubation airway establishment. At the same time, the functions of oxygen supply and esophageal drainage of the ventilator can also be realized by connecting the tube.

Optionally, the main body tube 2, the cover body 1, and the connecting piece 9 are all integrally formed and their materials are selected from materials with the same Shore hardness, the materials are plastic products with Shore hardness B and B≤75D, optional From but not limited to silicone, PVC, etc. that meet the requirements of Shore hardness. By selecting the soft material cover 1 and support 12, they can effectively fit on the mucous membrane folds around the patient's glottis to form a sealing ring and an isolated ventilation area for the airway to pass through the high-pressure airflow channel. The support 12 is an integrally formed preform, and its material is selected from materials with Shore A hardness, A≤45D, and can be selected from but not limited to silica gel, PVC, etc. that meet the Shore hardness requirements.

Optionally, the included angle between the central axis of the cover body 1 along the longitudinal direction and the extension line of the central axis of the main body tube 2 along the longitudinal direction is α, and the range of α is: 100°≤α≤150°, preferably, 100° ≤α≤130°, and the back side of the cover body is smoothly arranged, which is convenient for the operation of tube placement.

Further, as shown in FIG. 4 and FIG. 7 , a first step 21 is provided on the inner wall of the ventilation passage 5 near one end of the ventilation pipe 19 , the end of the ventilation pipe 19 is adapted to the first step 21 and the ventilation pipe 19 is inserted. In the ventilation channel 5; the inner wall of the drainage channel 6 close to one end of the drainage tube 20 is provided with a second step 22, the end of the drainage tube 20 is adapted to the second step 22, and the drainage tube 20 is inserted in the drainage channel 6. The connection between the ventilation tube 19 and the ventilation channel 5, and the drainage tube 20 and the drainage channel 6 is realized by plugging. At the same time, the connecting tube and the main body tube 2 are respectively integrally formed, and the Shore hardness of the material of the main body tube 2 is smaller than that of the connecting tube. The Shore hardness of the pipe material, that is, the material of the main body pipe 2 is softer than the material of the connecting pipe, so that the connection method of the plug connection is firmer.

The above embodiments do not limit the shape, material, structure, etc. of the present invention in any form, and any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention belong to the technology of the present invention. The scope of protection of the program.

Claims (10)

1. a low-damage ventilation catheter, comprising a cover body fitted with the surface of the upper respiratory tract of the human body and a main body pipe connected with one end of the cover body, it is characterized in that: the cover body is that the ventral side is provided with an open cavity structure and It can be automatically shaped according to the anatomical structural characteristics of the throat. The main body tube is provided with a ventilation channel and a drainage channel along its length direction. The ventilation channel is communicated with the cover body. The drainage port is communicated, and the drainage channel and the cavity structure of the cover body are independent of each other; a support member for supporting the cover body is installed in the cavity structure of the cover body. 2. A low-damage ventilation catheter according to claim 1, characterized in that: the cavity structure of the cover body is fixedly connected with a connecting piece, and the connecting piece is provided with a ventilation hole that communicates with the ventilation passage, and the ventilation hole is located in the cavity. Below the top opening of the cover body, a guide hole is also opened on the connecting piece, the guide hole is connected with the air hole and the cavity structure of the cover body, the contour shape of the support piece is matched with the inner cavity of the cover body and the cover body is open. The edge of the through hole is fixedly connected to the outer side wall of the support piece, the support piece is provided with a through hole that is adapted to the ventilation hole, the edge of the through hole is flush with the top of the connecting piece, and the edge of the through hole is connected to the connecting piece. Fixed connection; the bottom of the support piece is arranged against the connecting piece, the bottom of the support piece is provided with a channel that communicates with the cavity structure of the cover body, and the channel is also communicated with the guide hole. 3 . The low-damage ventilation catheter according to claim 2 , wherein the passage comprises a relinquishment slot, the relinquishment slot is arranged along the length direction of the support, and the front end of the relinquishment slot is provided with a relinquishment hole. 4 . , the abdication hole is V-shaped. 4 . The low-damage ventilation catheter according to claim 3 , wherein the passage further comprises air guide grooves located on both sides of the abdication hole and circumferentially arranged along the edge of the support member. 5 . 5 . The low-damage ventilation catheter according to claim 2 , wherein the top of the connecting piece close to one end of the main body tube is fixedly connected with an arc-shaped epiglottis table, and the epiglottis table protrudes from the top surface of the support member. 6 . 6. A low-damage ventilation catheter according to any one of claims 1-5, wherein the ventilation channel and the drainage channel are independent of each other and the longitudinal section of the ventilation channel is elliptical, and the main body tube is far away from the cover body. A connecting pipe is installed at one end, and the connecting pipe includes a ventilation pipe communicated with the ventilation channel. The connecting pipe also includes a drainage pipe communicated with the drainage channel. The drainage pipe is fixedly connected to the outer side wall of the ventilation pipe. 7. A low-damage ventilation catheter according to any one of claims 1-5, characterized in that: the main body tube, the cover body, and the connecting piece are all integrally formed, and the materials thereof are selected from materials with the same Shore hardness, and the said The Shore hardness of the material is B, B≤75D; the support is an integrally formed preform, and its material is selected from the material with Shore hardness A, A≤45D. 8. A low-damage ventilation catheter according to claim 7, wherein the included angle between the central axis of the cover body along the length direction and the extension line of the main body tube along the length direction central axis is α, and the range of α is: 100°≤α≤150°. 9 . The low-damage ventilation catheter according to claim 6 , wherein a first step is provided on the inner wall of the ventilation passage close to one end of the ventilation pipe, and the end of the ventilation pipe is adapted to the first step and the ventilation pipe. 10 . Inserted in the ventilation channel; the inner wall of the drainage channel close to one end of the drainage tube is provided with a second step, the end of the drainage tube is matched with the second step, and the drainage tube is inserted in the drainage channel. 10 . The low-damage ventilation catheter according to claim 9 , wherein the connecting tube and the main body tube are respectively integrally formed, and the Shore hardness of the material of the main body tube is smaller than that of the connecting tube material. 11 .

Images