Inhalation type anaesthetic mask

Abstract

The utility model provides an inhalation type anaesthetic mask, which relates to the technical field of medical instruments and comprises a mask body, a connecting sleeve is integrally formed on the side wall of the mask body, a connecting pivot is fixed on the connecting sleeve, and a sealing mechanism is mounted on the connecting sleeve. The sealing mechanism comprises a sealing gasket, a sliding frustum and two hoop semi-rings which are buckled with each other, the hoop semi-rings are rotationally connected to the connecting pivot, a positioning convex ring is arranged at the top of the connecting sleeve, a sealing ring groove is formed in the upper end of the positioning convex ring, an extrusion conical surface is arranged at the front end of the sliding frustum, and a sealing ring is arranged in the sealing ring groove. And positioning grooves are formed in the lower sides of the inner walls of the two hoop semi-rings, extrusion convex rings are arranged on the upper sides of the inner walls of the hoop semi-rings, the extrusion convex rings abut against the extrusion conical surfaces in a sliding mode, and a fastening bolt is connected between the two hoop semi-rings. According to the utility model, the hoop semi-ring can be pressed by the fastening bolt, so that the sliding frustum extrudes the sealing gasket to tightly hold the stomach tube to form sealing.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an inhalation-type anesthesia mask. Background Technology

[0002] Tea-inhalation anesthetic masks are a fundamental and crucial tool in anesthetic practice, primarily used to deliver a mixture of anesthetic gases and oxygen to patients during the induction and maintenance phases of general anesthesia, or when non-invasive ventilation support is required.

[0003] During anesthesia, the gastric tube can affect the wearing and sealing of the anesthesia mask. Temporary removal or clamping of the gastric tube is usually necessary, which can reduce the pressure on the tube and increase the risk of bloating.

[0004] For example, an anesthesia mask disclosed in announcement number CN222623495U has a sealing component in the groove. After the gastric tube is placed in the groove, it can fill the gap that may exist between the gastric tube and the groove wall, thereby further preventing air leakage of the mask body during ventilation and oxygenation; thus ensuring the effectiveness of the mask body.

[0005] However, during the use of anesthesia masks, the mask needs to be pressed tightly against the patient's face with a certain pressure. The mask's flexible pad deforms to fit the patient's face to achieve a seal. However, the grooves on the flexible pad do not have limiting devices, so the direction of deformation after being pressed is uncontrollable. After being pressed, it may open to the sides or wrinkle internally, and will not hug the gastric tube in the expected direction to achieve a seal. In addition, there is also the possibility of flattening and sealing the gastric tube. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides an inhalation-type anesthesia mask, which solves the problems mentioned in the background section.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An inhalation anesthesia mask includes a mask body with a perforation hole for a gastric tube to pass through on its side wall. A connecting sleeve is integrally formed on the outer wall of the perforation hole on the mask body. A sealing mechanism is installed on the connecting sleeve. The sealing mechanism includes a sealing washer, a sliding cone, and two interlocking clamping half-rings. A positioning protrusion is provided at the top of the connecting sleeve, and a sealing ring groove is provided at the upper end of the positioning protrusion. The sealing washer is placed in the sealing ring groove. The sliding cone includes an integrally formed cone portion and a compression portion. The compression portion abuts against the upper side of the sealing washer, and a compression cone surface is provided at the front end of the cone portion. Positioning grooves are provided on the lower inner walls of the two clamping half-rings, and the positioning grooves slide and engage with the outer side of the positioning protrusion. A compression protrusion is provided on the upper inner wall of the clamping half-rings, and the compression protrusion slides and abuts against the compression cone surface. A fastening bolt connects the two clamping half-rings.

[0009] Preferably, a connecting bracket is fixed to the bottom of the connecting sleeve, a connecting pivot is fixed on the connecting bracket, one end of each of the two clamp half-rings is hinged to the connecting pivot, and the other end of each clamp half-ring is integrally formed with a fastening rib, and the fastening bolt is connected between the two fastening ribs.

[0010] Preferably, the fastening rib has a transverse groove, and the fastening bolt slides through the transverse groove.

[0011] Preferably, the ends of the two clamp half-rings are provided with mutually cooperating pivot rings, the pivot rings are rotatably connected to the connecting pivot, and the top of the connecting pivot is provided with a limit ring, the limit ring sliding and abutting against the upper side of the pivot ring.

[0012] Preferably, a stepped groove is provided in the middle of the inner wall of the clamp semi-ring, the stepped groove is provided between the positioning groove and the extrusion protrusion, and the cone portion is slidably installed in the stepped groove.

[0013] Preferably, the lower side of the extrusion ring is provided with a pressing cone surface, and the inclination of the pressing cone surface is equal to that of the extrusion cone surface.

[0014] This invention provides an inhalation-type anesthesia mask. It has the following beneficial effects:

[0015] In this invention, the gastric tube can pass through the insertion hole, and the two clamping half-rings can be rotated and fastened together. By tightening the fastening bolts, the two clamping half-rings can be gradually tightened. The compression protrusion of the clamping half-rings will gradually press the sliding cone downward, thereby compressing the sealing gasket to deform inward and tighten the outer wall of the gastric tube to form a seal, thus preventing air leakage from the mask body. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of an inhalation anesthesia mask according to the present invention;

[0017] Figure 2 This is a partial cross-sectional view of an inhalation-type anesthesia mask according to the present invention;

[0018] Figure 3 This is a schematic diagram of the sealing mechanism in this utility model.

[0019] In the diagram: 1. Mask body; 2. Connecting sleeve; 3. Positioning convex ring; 4. Connecting pivot; 5. Sealing gasket; 6. Sliding cone; 7. Clamp half ring; 8. Fastening bolt; 9. Extrusion convex ring; 10. Fastening rib; 11. Limiting ring. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] This utility model embodiment provides an inhalation anesthesia mask, such as Figure 1-3 As shown, the mask body 1 includes a tube hole for a gastric tube to pass through on its side wall. A connecting sleeve 2 is integrally formed on the outer wall of the tube hole of the mask body 1. The gastric tube passes through the tube hole and extends to the outside of the mask body 1. A positioning protrusion 3 is provided at the top of the connecting sleeve 2. A sealing ring groove is provided at the upper end of the positioning protrusion 3. A connecting bracket is fixed at the bottom of the connecting sleeve 2. A connecting pivot 4 is fixed on the connecting bracket.

[0022] like Figures 2-3 As shown, a sealing mechanism is installed on the connecting sleeve 2. The sealing mechanism includes a sealing washer 5, a sliding cone 6, and two interlocking clamp half-rings 7. The sealing washer 5 is placed in the sealing ring groove, and the inner wall of the sealing washer 5 abuts against the outer wall of the gastric tube. The sliding cone 6 includes an integrally formed cone part and a compression part. The compression part is cylindrical and is fitted on the outside of the gastric tube. It slides and inserts into the inner wall of the sealing ring groove. The lower end of the compression part presses against the upper side of the sealing washer 5. A limiting cavity is formed between the lower end of the compression part, the inner wall of the sealing ring groove, and the bottom wall, so that the sealing washer 5 can only deform inward to compress the outer wall of the gastric tube to form a seal after being compressed. The front end of the cone part is provided with a compression cone surface.

[0023] One end of each of the two clamping half-rings 7 is provided with a pivoting ring that cooperates with each other. The pivoting ring is rotatably connected to the connecting pivot 4. The top of the connecting pivot 4 is provided with a limiting ring 11. The limiting ring 11 slides and abuts against the upper side of the pivoting ring, which can limit the two clamping half-rings 7 to the connecting pivot 4 and prevent the clamping half-rings 7 from falling off and being lost. The other end of each clamping half-ring 7 is integrally formed with a fastening rib 10. The two fastening ribs 10 are provided with corresponding transverse slots, and a fastening bolt 8 is connected between the two transverse slots.

[0024] The lower side of the clamp half-ring 7 is provided with a positioning groove corresponding to the positioning protrusion 3. The positioning groove can slide and be fastened to the positioning protrusion 3 for axial positioning. The upper side of the inner wall of the clamp half-ring 7 is provided with a compression protrusion 9. The lower side of the compression protrusion 9 is provided with a pressing cone surface. The inclination of the pressing cone surface is equal to that of the compression cone surface. The pressing cone surface slides and abuts against the compression cone surface. As the fastening bolt 8 is gradually tightened, the two clamp half-rings 7 gradually fasten together. The pressing cone surface will gradually slide the sliding cone 6 downward and compress the sealing gasket 5 to expand and deform inward, pressing it against the outer wall of the gastric tube to form a seal and prevent oxygen leakage from the mask body 1. The inner wall of the clamp half-ring 7 is provided with a stepped groove between the positioning groove and the compression protrusion 9. The cone part is slidably installed in the stepped groove, which allows the sliding cone 6 to slide up and down under compression.

[0025] Working principle:

[0026] In this invention, the patient's gastric tube can be inserted through the tube hole and extended along the connecting sleeve 2 to the outside of the mask body 1. The position of the gastric tube is adjusted so that the mask body 1 presses firmly against the patient's face without affecting the gastric tube. Then, the two clamping half-rings 7 are fastened together, and the two clamping half-rings 7 are gradually fastened and pressed together by the fastening bolts 8. During the fastening and pressing process, the extrusion ring 9 is pressed against the frustum part, causing the sliding frustum 6 to slide down and squeeze the sealing gasket 5 to expand inward and hold the gastric tube tightly, forming a seal on the outer wall of the gastric tube, which can effectively prevent oxygen leakage inside the mask body 1.

[0027] In addition, during use, the fastening bolt 8 should not be completely removed. The length of the fastening bolt 8 limits the opening angle of the two clamping half-rings 7, restricting the opening position of the extrusion ring 9 on the clamping half-rings 7. This prevents the sliding cone 6 and the sealing gasket 5 from falling out, while also ensuring the smooth passage of the gastric tube. The limiting ring at the top of the connecting pivot 4 further restricts the clamping half-rings 7 from falling off. Through the above restrictions, the sealing mechanism can be fixed on the mask body 1, preventing the loss of any parts.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An inhalation-type anesthesia mask, comprising a mask body, characterized in that: The mask body has a perforation hole on its side wall for a gastric tube to pass through. A connecting sleeve is integrally formed on the outer wall of the perforation hole on the mask body. A sealing mechanism is installed on the connecting sleeve. The sealing mechanism includes a sealing washer, a sliding cone, and two interlocking clamping half-rings. A positioning protrusion is provided at the top of the connecting sleeve. A sealing ring groove is provided at the upper end of the positioning protrusion. The sealing washer is placed in the sealing ring groove. The sliding cone includes an integrally formed cone part and a compression part. The compression part abuts against the upper side of the sealing washer. A compression cone surface is provided at the front end of the cone part. A positioning groove is provided on the lower side of the inner wall of the two clamping half-rings. The positioning groove slides and engages with the outer side of the positioning protrusion. A compression protrusion is provided on the upper side of the inner wall of the clamping half-rings. The compression protrusion slides and abuts against the compression cone surface. A fastening bolt connects the two clamping half-rings.

2. The inhalation anesthesia mask according to claim 1, characterized in that: A connecting bracket is fixed to the bottom of the connecting sleeve, and a connecting pivot is fixed on the connecting bracket. One end of each of the two clamp half-rings is hinged to the connecting pivot, and the other end of each clamp half-ring has an integrally formed fastening rib. The fastening bolt is connected between the two fastening ribs.

3. The inhalation anesthesia mask according to claim 2, characterized in that: The fastening rib has a transverse groove, and the fastening bolt slides through the transverse groove.

4. An inhalation-type anesthesia mask according to claim 3, characterized in that: The ends of the two clamp half-rings are provided with mutually cooperating pivot rings. The pivot rings are rotatably connected to the connecting pivot. The top of the connecting pivot is provided with a limit ring, which slides and abuts against the upper side of the pivot ring.

5. An inhalation-type anesthesia mask according to claim 4, characterized in that: A stepped groove is provided in the middle of the inner wall of the clamp half ring. The stepped groove is located between the positioning groove and the extrusion protrusion ring, and the truncated cone part is slidably installed in the stepped groove.

6. An inhalation-type anesthesia mask according to claim 1, characterized in that: The lower side of the extrusion ring is provided with a pressing cone surface, and the inclination of the pressing cone surface is equal to that of the extrusion cone surface.

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