WO2015035743A1

WO2015035743A1 - Laryngeal mask breather tube apparatus and manufacturing method therefor

Info

Publication number: WO2015035743A1
Application number: PCT/CN2014/070827
Authority: WO
Inventors: 徐尚通; 夏春华; 袁伟倍; 舒杰
Original assignee: 广州维力医疗器械股份有限公司
Priority date: 2013-09-10
Filing date: 2014-01-17
Publication date: 2015-03-19
Also published as: CN103432670A; CN103432670B

Abstract

A laryngeal mask breather tube apparatus comprises a breather tube (1), a drainage tube (2), and a hollow mask bag (3) with an opening at the bottom. A bottom end of the hollow mask bag (3) is connected to the breather tube (1) and the drainage tube (2). A front end of the hollow mask bag (3) is provided with a drainage port (3a) in fluid communication with the drainage tube (2). A ventilation port (3b) in gas communication with the breather tube (1) is disposed in the hollow mask bag (3). The hollow mask bag (3) is of an integrated structure formed by one-time operation and comprising an inflatable back mask (31), a drainage tube (32) in the mask, and an inflatable sleeve bag sealing piece (33). The drainage port (3a) is in fluid communication with the drainage tube (2) through the drainage tube (32) in the mask. Also provided is a method for manufacturing the laryngeal mask breather tube apparatus. The laryngeal mask breather tube apparatus and the manufacturing method therefor can reduce rugged burrs, simplify the production process and improve the production efficiency.

Description

Laryngeal mask vent tube device and method of manufacturing same

Technical field

The present invention relates to the field of medical devices, and more particularly to a laryngeal mask vent tube device and a method of manufacturing the same.

BACKGROUND OF THE INVENTION Laryngeal mask ventilation is a common means of assisting respiratory ventilation in patients with hemodynamically stable general anesthesia. Laryngeal masks are necessary equipment for laryngeal mask ventilation.

The promotion and use of the laryngeal mask is to overcome the shortcomings of the intubation operation of the tracheal intubation ventilation mode and easy to cause sensitive reactions, etc., to realize the convenient ventilation operation of the tube and reduce the damage to the throat and respiratory mucosa of the patient. The prior art has disclosed the basic structure of the laryngeal mask, which mainly includes components such as a cover, a snorkel, a drainage tube, a dental pad, an inflator, and a joint. The structure of the cover is the key to the laryngeal mask. In the prior art, the cover is made of glue, such as the cover, the inner drainage tube and the ferrule seal. The structure of the cover is complicated, the parts are made and The adhesion process is very complicated, so the production efficiency is low, and uneven burrs are easily left, which may cause irritation or even damage to the throat mucosa of the patient during use. Patent Document No. 200680018649. X discloses a laryngeal mask airway device and a manufacturing method thereof. The patent changes the cover body from a multi-part adhesive molding to a cover and an inner drainage tube (drainage tube). The cover is formed as a cover, and the sleeve is bonded to the cover to form a seal of the cover after blow molding, and the patent reduces the cover formed by multiple components by glue bonding to two separate moldings. The parts are bonded and molded, which greatly reduces the unevenness of the cover and simultaneously simplifies the manufacturing process. However, there is at least one glue bonding process in the cover made by the patent, and uneven burrs may be generated, and the molding and assembly processes are still complicated. Summary of the invention

SUMMARY OF THE INVENTION One object of the present invention is to provide a laryngeal mask vent pipe device which can minimize the number of uneven burrs of the hood and optimize the manufacturing process to greatly increase the production efficiency.

The second object of the present invention is to provide a method for manufacturing a laryngeal mask ventilating device, which can be made into a tubular manufacturing process, and the production efficiency is greatly improved. The laryngeal mask vent pipe device obtained by the method can reduce the number of uneven burrs of the hood. To the least.

In order to achieve the above object, the present invention provides a laryngeal mask vent tube device for inserting into a patient to provide a ventilating passage for a patient's glottic opening, which includes a snorkel, a drainage tube and a hollow hood at the bottom opening, the hollow The rear end of the cover is connected to the vent pipe and the drainage tube, and the front end of the hollow cover is provided with a drainage port that is in fluid communication with the drainage tube, and the hollow cover is provided with a gas holding the vent tube a venting opening, the hollow hood being a one-piece molded unitary structure comprising an inflatable inflatable back cover, an inner hood drainage tube and an inflatable expanded ferrule seal, the drainage opening passing through the hood The inner drainage tube is in fluid communication with the drainage tube.

The thickness of the back cover is 1-1. lmm. The thickness of the back cover is 1-1. lmm.

Preferably, the back cover includes an outer cover functional area and an inner cover functional area, a cavity is formed between the back cover functional area and the cover functional area, and the cover functional area is opened 5至倍倍。 The wall thickness of the back cover functional area is 1.5 to 2 times.

Preferably, the ferrule seal has a peripheral portion that is adjacent to and integral with the hood functional region, and an inner peripheral portion at the bottom opening of the hollow hood, the wall thickness and the inner peripheral portion 5至倍倍。 The wall thickness of the outer portion of the ferrule seal is 1.5 to 2 times.

Preferably, the in-hood drainage tube has a lower wall and an upper wall integrally formed with the cover functional area, and a wall thickness of the lower wall near the drainage opening is a wall thickness of the remaining portion of the lower wall 1.5 to 2 times. Preferably, it further comprises an inflation line and a dental pad, wherein the snorkel and the drainage tube and the inflation line are provided with the dental pad, and the inflation line communicates with the ferrule seal.

Preferably, the snorkel, the drainage tube and the dental pad are integrally formed.

In order to achieve the above object 2, the present invention provides a method of manufacturing a laryngeal mask vent tube apparatus, the manufacturing method comprising:

(1) providing an in-capacity drainage tube forming rod in an injection mold, injecting liquid silicone into the injection mold, and forming the back cover, the inner drainage tube and the ferrule seal after the solidification of the colloid One-piece hollow cover;

(2) connecting the vent tube and the drainage tube to the hollow cover.

Preferably, after the colloid is solidified, the step of extracting the rod from the draft tube in the hood and the step of rewinding the hollow hood after demolding are further included.

Preferably, the step of detecting the wall thickness of each portion of the back cover, the inner drainage tube and the ferrule seal after the hollow hood roll is restored.

Compared with the prior art, the laryngeal mask vent tube device of the present invention and the method of manufacturing the same utilize an injection process to produce an integrated hollow cover comprising an inflatable inflatable back cover, an in-hood drainage tube and an inflatable expanded ferrule seal. The structure of the crucible is such that the hollow cover itself does not have any adhesion marks caused by the adhesion of the parts, and the number of uneven edges of the cover is minimized, thereby ensuring the smoothness and smoothness of the outer surface thereof, and the minimization is minimized. The hollow mask is inserted into the patient's throat and has frictional damage to the oropharynx mucosa; and the manufacturing process is reduced, the manufacturing cost is reduced, the production efficiency is greatly improved, the quality assurance level of the hollow mask is effectively improved, and the clinical use is improved. reliability.

The invention will be more apparent from the following description, taken in conjunction with the accompanying drawings.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a laryngeal mask vent tube assembly of the present invention.

Figure 2 is a bottom view of Figure 1. 3 is an isometric view of the hollow cover of FIG. 1.

Figure 4 is a bottom view of Figure 3.

Figure 5 is a side view of Figure 3.

Figure 6 is a cross-sectional view of the position A-A' in Figure 3.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT OF THE INVENTION Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.

Referring to Figures 1-6, the laryngeal mask vent tube device is configured to be inserted into a patient to provide a ventilation passage for a patient's glottic opening. The laryngeal mask vent tube device includes a snorkel 1, a drainage tube 2, and a hollow at the bottom opening. The cover 3, the inflation line 4 and the dental pad 5.

In detail, the rear end of the hollow cover 3 is connected to the vent pipe 1, the drainage tube 2 and the inflation line 4, and the front end of the hollow hood 3 is provided with drainage which is in fluid communication with the drainage tube 2. Mouth 3a. A vent 3b is provided in the hollow cover 3 in gas communication with the vent pipe 1. The hollow cover 3 is a one-piece molded structure comprising a inflatable expandable back cover 31, an inner shroud 32 and an inflatable expandable ferrule seal 33. The vent 3b is provided on the back cover 31. The ferrule seal 33 is provided with the drain port 3a. The drainage port 3a communicates with the in-panel drainage tube 32, and is in fluid communication with the drainage tube 2 through the in-cup drainage tube 32. The dental pad 1 is formed between the vent tube 1 and the drainage tube 2 and the inflation line 4, and the vent tube 1, the drainage tube 2 and the dental pad 5 are integrally formed. Of course, the vent tube 1, the drainage tube 2 and the dental pad 5 may also be provided separately. The inflation line 4 communicates with the ferrule seal 33.

1匪。 In more detail, the thickness of the back cover 31 is 1-1. 1 匪.匪。 In a specific embodiment, the thickness of the back cover may preferably be 1 匪, 1. 05 匪 or 1.1 匪. The back cover 31 includes an outer back cover functional area 31 a and an inner cover functional area 31 b , the back cover functional area 31 a and the cover functional area 31 b A cavity 31 c is formed therebetween. The vent opening 3b is opened in the cover functional area 31b. In order to prevent the inner drainage tube 32 from being folded to block the lumen of the inner drainage tube 32, the cover functional area 31 b is thickened so that the wall thickness of the cover functional area 31 b is the back cover functional area. 1 to 2 times the wall thickness of 31 a. 5倍, 1. 7倍, 1. 8倍, 1 The wall thickness of the back cover functional area 31 a is 1. 5 times, 1. 6 times, 1. 7 times, 1. 8 times, 1 . 9 times or 2 times.

The in-hood drainage tube 32 has a lower wall 32a and an upper wall 32b integral with the cover functional area 31b. In order to prevent the drainage port 3a from being pressed and blocked when the hollow cover 3 is pressurized and inflated, the lower wall 32a is thickened at a position close to the drainage opening 3a, so that the lower wall 32a is close to 5至倍倍。 The wall thickness of the wall portion of the lower wall 32a is 1.5 to 2 times. 5倍, 1. 6倍, 1. 7倍,, the wall thickness of the lower portion of the lower wall 32a may be 1. 5 times, 1. 6 times, 1. 7 times, 1. 8 times, 1. 9 times or 2 times.

The thickness of the wall is 0. 7-0. 8mm. The thickness of the wall is preferably 0.7 mm or 0.8 mm. The ferrule seal 33 has a peripheral portion 33a adjacent to and integral with the hood functional area 31a, and an inner peripheral portion 33b at the bottom opening of the hollow hood 3. In order to realize that the ferrule seal 33 can have good airtightness when the hollow hood 3 is inflated, and does not block the vent 3b, the inner peripheral portion 33b and the peripheral portion 33a are added. 5至倍倍。 The wall thickness of the outer portion of the ferrule seal 33 is 1.5 to 2 times the wall thickness of the rest of the ferrule seal 33. 5倍, 1. 6倍, 1. The wall thickness of the outer portion of the ferrule seal 33 is 1.5 times, 1. 6 times, 1. 7 times, 1. 8 times, 1. 9 times or 2 times.

When the hollow cover 3 is pressurized and inflated, the ferrule seal 33 and the back cover 31 are filled and expanded, and the upper wall 32b of the hood inner drainage tube 32 can be flexibly deformed with stress, Under the thickening action of the cover functional area 31 b, the inner drainage tube 32 can be prevented from being buckled to block the lumen of the inner drainage tube 32, and the cover functional area 31 b is prevented from being quilted by the sealing member 33. Squeeze Blocking the vent 3b to ensure the safety of ventilation; under the thickening action of the peripheral portion 33a and the inner peripheral portion 33b, the direction and range of inflation of the ferrule seal 33 are defined, The ferrule seal 33 can have good airtightness without blocking the vent 3b; the drain can be avoided under the thickening of the lower wall 32a near the position of the drain 3a 3a is blocked by compression.

After the hollow cover 3 is inflated, and the bottom of the hollow cover 3 is contacted and the throat is sealed, a portion of the drum 31 of the back cover 31 contacts the upper jaw to form a reverse pressing force, forming a similar backing. Effect. Since the hollow cover 3 is a one-piece structure formed by one-time injection, the appearance of the hollow cover 3 is smooth and smooth, and the hollow cover 3 is inserted into the throat of the patient to the utmost extent. Friction damage to the oropharynx mucosa; and the hollow hood 3 can effectively seal the patient's throat under high ventilation pressure, because the hollow hood 3 only needs to maintain a low air pressure to achieve 4 艮The airtightness, thereby minimizing the compression damage of the hollow sac 3 on the mucosa of the patient's throat and oropharynx; and the hollow hood 3 is formed by one-time molding, compared to the prior art. In the state in which the hollow cover is composed of multiple parts, each component is separately manufactured and assembled into a whole by a bonding method, which greatly shortens the manufacturing process, reduces the manufacturing cost, and effectively improves the hollow cover 3 The quality assurance level improves the reliability of clinical use.

The manufacturing method of the laryngeal mask ventilator device comprises the following steps:

(1), an in-cover drainage tube forming rod (not shown) is disposed in an injection mold (not shown), and the upper and lower molds of the injection mold are clamped, and at the same time, the inner drainage tube forming rod is reset. Fixing the upper and lower molds, adjusting and preventing the eccentricity of the mold clamping, injecting liquid silicone into the injection mold from the injection hole of the injection mold, and forming the back cover 31 and the inner drainage tube 32 after the solidification of the colloid And a one-piece hollow cover 3 of the ferrule seal 33.

(2) After the colloid is solidified, the mold is opened, and the forming rod of the drainage tube inside the cover is pulled out, and the hollow cover 嚢 3 is rolled and demolded and then rolled back to recover.

(3) further comprising detecting the back cover 31 and the cover after the hollow cover 3 is rolled back The wall thickness of each portion of the inner draft tube 32 and the ferrule seal 33.

(4) connecting the vent pipe and the draft tube to the rear end of the hollow cover. In this step, the vent pipe 1 is respectively connected to the vent pipe port 3c of the hollow cover 3, the drain pipe 2 is connected to the draft pipe joint 3d, and the inflation line 4 is connected to the Inflatable interface 3f, and glued to strengthen. The invention has been described above in connection with the preferred embodiments, but the invention is not limited to the embodiments disclosed above, but should be construed to cover various modifications and equivalent combinations in accordance with the nature of the invention.

Claims

Rights request

A laryngeal mask vent tube device for inserting into a patient to provide a venting passage for a patient's glottic opening, comprising a snorkel, a drainage tube and a hollow sill at the bottom opening, the rear end of the hollow hood The vent tube and the drainage tube, the front end of the hollow hood is provided with a drainage port that is in fluid communication with the drainage tube, and the hollow hood is provided with a venting port that maintains gas communication with the vent tube, and features Wherein: the hollow cover is a one-piece molded structure comprising an inflatable inflatable back cover, an inner cover drainage tube and an inflatable expanded ferrule seal, the drainage opening passing through the inner drainage tube Maintaining fluid communication with the drainage tube.

The wall thickness of the back cover is 1-1. The wall thickness of the back cover is 1-1. 1匪.

3. The laryngeal mask vent tube device according to claim 1, wherein: the back cover comprises an outer back cover functional area and an inner cover functional area, the back cover functional area and the cover functional area 5至倍倍。 The wall thickness of the back cover functional area is 1.5 to 2 times the wall thickness of the back cover functional area.

4. The laryngeal mask ventilating device of claim 3, wherein: the ferrule seal has a peripheral portion that is adjacent to and integral with the hood functional region and is located at a bottom opening of the hollow hood 5至倍倍。 The wall thickness of the inner portion of the ferrule seal is 1.5 to 2 times the wall thickness of the rest of the ferrule seal.

5. The laryngeal mask ventilator device according to claim 3, wherein: the in-hood drainage tube has a lower wall and an upper wall integral with the cover functional area, the lower wall being close to the drainage 5至倍倍。 The wall thickness of the wall portion of the lower wall is 1.5 to 2 times.

6. The laryngeal mask ventilator device according to claim 1, further comprising: an inflation line and a dental pad, wherein the snorkel and the drainage tube and the inflation line are provided with the dental pad The inflation line communicates with the ferrule seal.

7. The laryngeal mask ventilating device of claim 6, wherein the vent tube, the drainage tube and the dental pad are integrally formed. Rights request

8. A method of manufacturing a laryngeal mask vent tube apparatus according to claim 1, wherein said manufacturing method comprises:

(2) connecting the vent tube and the drainage tube to the hollow cover.

9. The method of manufacturing a laryngeal mask vent tube device according to claim 8, wherein: after the colloid is cured, the method further comprises the steps of withdrawing the inner-drainage tube forming rod and unwinding the hollow hood. Then roll back the recovery steps.

10. The method of manufacturing a laryngeal mask vent tube device according to claim 9, further comprising: detecting the back cover, the inner cover drainage tube and the ferrule seal after the hollow cover lap is restored The step of wall thickness of the part.