Angle opening double-side protection oral cavity suction catheter

By designing an angle to open the double-sided protective oral suction catheter, the problem of the protective sheet bonding hinders saliva suction during strong negative pressure suction is solved, and the effective suction of saliva and contaminated liquid is achieved, reducing the risk of missucking and respiratory obstruction is improved, and the convenience and safety of operation are improved.

CN120436822APending Publication Date: 2025-08-08HANGZHOU MINGLI MEDICAL INSTR CO LTD
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Patent Information

Application Number
CN202311617509.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-11-30
Publication Date
2025-08-08

AI Technical Summary

Technical Problem

When the existing oral suction catheter uses strong negative pressure to inhale saliva, the two protective sheets are easy to fit, hindering the effective aspiration of saliva and contaminated liquid, resulting in problems such as accumulation of saliva, inadvertent aspiration and insufficiency, and airway obstruction.

Method used

An angle-opening double-sided protective oral suction catheter is designed, including an angle connecting tube, a stretching bite pad and a transparent protective sheet. The transparent protective sheet is divided into the left and right suction grooves by the upper and lower protective sheets and the longitudinal support sheet, and multiple suction holes are provided. There are biting grooves and saliva on the stretching bite pad. The angle connecting tube is obtusely angled in 135 degrees for easy operation.

Benefits of technology

Effectively prevent the protective sheet from fitting, ensure the smooth aspiration of saliva and contaminated liquid, reduce misaccination and respiratory obstruction, protect the patient's mucosa, and improve operation convenience and safety.

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Abstract

The invention discloses an angle distraction double-side protection oral cavity suction catheter. The device comprises an angle connecting pipe, a distraction occlusal pad and a transparent protection sheet, the two ends of the distraction occlusal pad are connected with the angle connecting pipe and the transparent protection sheet respectively, the transparent protection sheet comprises an upper protection sheet and a lower protection sheet, and a first longitudinal supporting sheet, a second longitudinal supporting sheet and a longitudinal separation sheet are arranged between the upper protection sheet and the lower protection sheet. The longitudinal partition piece is located in the middle position between the upper protection piece and the lower protection piece and extends into an inner cavity of the opening occlusal pad, so that the inner cavity between the upper protection piece and the lower protection piece is divided into a left suction groove and a right suction groove which are located in the left side and the right side respectively; a plurality of suction holes communicated with the left suction groove and the right suction groove are formed in the upper protection sheet, the lower protection sheet, the first longitudinal supporting sheet and the second longitudinal supporting sheet. The problem that saliva, blood and other polluted liquid in the oral cavity are effectively sucked out due to the fact that the two protection pieces are easily attached to each other due to strong negative-pressure saliva suction force in the using process can be solved.
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Description

Technical Field

[0001] The invention relates to the technical field of oral medical treatment, in particular to an angle-supported double-sided protective oral suction catheter. Background Art

[0002] Research has shown that during many oral treatment procedures, bacteria-laden saliva particles and droplets can contaminate healthcare workers' skin, mouth, nose, eyes, and other mucous membranes, creating a significant pathway for cross-infection. Using strong negative pressure saliva suction can quickly and effectively remove large amounts of oral fluid and solid debris from abrasion, reducing the spread of water mist and, consequently, the bacterial load in the clinic air. This is a widely recommended clinical method for reducing air pollution and is beneficial for infection control in the dental department. Furthermore, during oral treatment, protecting the treatment area, tongue, and inner cheek mucosa can effectively protect these mucous membranes.

[0003] Currently, oral suction catheters are not widely used. The strong negative pressure applied during use can easily cause the two protective films to adhere together, hindering the effective removal of saliva and contaminated fluids. This can cause saliva to accumulate in the mouth, hindering treatment. During clinical use, there is also the risk of accidental aspiration or swallowing, leading to airway obstruction. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a double-sided protective oral suction catheter which is improved in use by making it easy for the two protective sheets to fit together and prevent the saliva, blood and other contaminated liquids in the oral cavity from being effectively sucked out at an angle.

[0005] The technical solution adopted by the present invention to solve the above-mentioned problems is: the oral suction catheter includes an angle connecting tube, a stretching pad and a transparent protective sheet, and the two ends of the stretching pad are respectively connected to the angle connecting tube and the transparent protective sheet. Its structural feature is that the transparent protective sheet includes an upper protective sheet and a lower protective sheet, and a first longitudinal support sheet, a second longitudinal support sheet and a longitudinal separator are provided between the upper protective sheet and the lower protective sheet. The first longitudinal support sheet and the second longitudinal support sheet are respectively located at the two side edges between the upper protective sheet and the lower protective sheet, and the longitudinal separator is located in the middle position between the upper protective sheet and the lower protective sheet and extends into the inner cavity of the stretching pad, thereby dividing the inner cavity between the upper protective sheet and the lower protective sheet into a left suction groove and a right suction groove respectively located on the left and right sides, and the left suction groove and the right suction groove are connected to the angle connecting tube through the occlusal stretching pad; a plurality of suction holes connected to the left suction groove and the right suction groove are provided on the upper protective sheet, the lower protective sheet, the first longitudinal support sheet and the second longitudinal support sheet.

[0006] The outer surface of the expanded bite pad of the present invention is symmetrically provided with two groups of bite grooves, each group of bite grooves is composed of eight teardrop-shaped grooves, and the expanded bite pad is also provided with a plurality of bite pad suction holes connected to the inner cavity of the expanded bite pad.

[0007] The present invention further provides an outwardly protruding saliva suction port on the outer surface of the bite stretcher pad, and the saliva suction port is communicated with the left suction groove and the right suction groove.

[0008] The transparent protective sheet described in the present invention includes a first protection area, a second protection area and a third protection area, wherein the second protection area is the narrowest, and the widths of the first protection area and the third protection area are similar; the first longitudinal support sheet is located in the first protection area, and the second longitudinal support sheet is located in the third protection area.

[0009] The angle connecting tube body of the present invention is in an obtuse angle of 135 degrees, and the cross section of one end thereof connected to the expanded bite pad is elliptical, while the cross section of the other end thereof gradually shrinks into a circle.

[0010] The suction hole of the present invention is in the shape of a leaf.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. The oral suction catheter is provided with a first longitudinal support sheet, a second longitudinal support sheet, and a longitudinal separator sheet between the upper and lower protective sheets, thereby dividing the inner cavity between the upper and lower protective sheets into a left suction groove and a right suction groove. The first and second longitudinal support sheets are respectively located at the two side edges between the upper and lower protective sheets. Under the support of the first and second longitudinal support sheets, even under strong negative pressure saliva suction force, the upper and lower protective sheets will not stick together, thus not hindering the effective suction of saliva, blood, and other contaminated liquids in the oral cavity. 2. The oral suction catheter is equipped with multiple densely arranged suction holes on the upper protective sheet, lower protective sheet, first longitudinal support sheet, and second longitudinal support sheet, forming multiple suction channels connected to the left suction groove and the right suction groove. Multiple suction channels can operate simultaneously, thereby more effectively sucking out saliva, blood, and other contaminated liquids in the mouth, avoiding accidental aspiration and swallowing, reducing the risk of airway obstruction, and alleviating the patient's symptoms of dyspnea. 3. The oral suction catheter's bite pad includes two sets of upper and lower bite grooves. Each set of bite grooves is composed of eight teardrop-shaped grooves. The teardrop-shaped grooves simulate the shape of the teeth's bite, making the bite state more stable and preventing slippage. The bite pad can be moved back and forth in the mouth to facilitate attachment to any tooth. Therefore, the bite pad can be fixed in any position in the mouth, which is very convenient. At the same time, the bite pad is also provided with multiple bite suction holes to facilitate the absorption of waste liquid. 4. The transparent protective sheet of the oral suction catheter is made of medical-grade silicone material to ensure its safety and hygiene. This material is skin-friendly, durable and easy to clean, and can effectively protect the patient's tongue, throat and cheek mucosa. 5. The angled connection tube of the oral suction catheter is an obtuse 135-degree angle, connecting the transparent protective sheet and the side of the bite pad. The cross-section of the end connected to the bite pad is elliptical, and the cross-section of the other end tapers to a circular shape, thereby increasing the distance from the oral treatment area and facilitating clinical operation and treatment by doctors. 6. The middle outer contour of the first protection zone of the oral suction catheter is a concave curve. During the oral protection process, a gap is left with the upper jaw, effectively preventing the patient from feeling a foreign body sensation and vomiting. The second protection zone is an elliptical portal shape, which conforms to the oral alveolar ergonomic design and fits the gums well, effectively preventing gum damage and other related injuries. The third protection zone is designed in a fishtail shape to effectively protect the cheek surface. 7. The angle connecting tube of the oral suction catheter and the connection of the expanded bite pad are tightly connected by an elliptical concave-convex groove to avoid falling off during strong negative pressure suction. The reinforcement rib design of the concave-convex groove can effectively prevent the connection from cracking and slipping and falling off during hand holding. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of an embodiment of the present invention.

[0013] Figure 2 This is a three-dimensional diagram of an embodiment of the present invention (after separating the angle connecting tube).

[0014] Figure 3 It is a front view of an embodiment of the present invention.

[0015] Figure 4 for Figure 3 AA cross-sectional view.

[0016] Figure 5 It is a bottom view of an embodiment of the present invention.

[0017] Figure 6 for Figure 5 BB cross-sectional view.

[0018] Figure 7 This is a three-dimensional diagram of the transparent protective sheet and the expanded bite pad in an embodiment of the present invention.

[0019] Figure 8 This is a front view of the transparent protective sheet and the stretched bite pad in an embodiment of the present invention.

[0020] Figure 9 for Figure 8 CC cross-sectional view.

[0021] Figure 10 for Figure 8 DD cross-sectional view.

[0022] Figure 11 for Figure 8 EE cross-sectional view.

[0023] Figure 12 for Figure 8 FF cross-sectional view.

[0024] Figure 13 This is a usage status diagram of an embodiment of the present invention. Implementation Method

[0025] See also Figures 1-12 This embodiment includes an angled connecting tube 1, a stretching and bite pad 2, and a transparent protective sheet 3. The stretching and bite pad 2 is connected to the angled connecting tube 1 and the transparent protective sheet 3 at both ends. The angled connecting tube 1 is generally 135 degrees obtuse-angled. The cross-section of the end connected to the stretching and bite pad 2 is elliptical, while the cross-section of the other end tapers to a circular shape.

[0026] The transparent protective sheet 3 is made of a transparent and soft medical silicone material, and includes an upper protective sheet 31 and a lower protective sheet 32. According to the shapes of the upper protective sheet 31 and the lower protective sheet 32, the transparent protective sheet 3 can be divided into a first protective area 301, a second protective area 302 and a third protective area 303, among which the width of the second protective area 302 is the narrowest, and the widths of the first protective area 301 and the third protective area 303 are similar.

[0027] A first longitudinal support sheet 41, a second longitudinal support sheet 42 and a longitudinal separator 43 are provided between the upper protective sheet 31 and the lower protective sheet 32, wherein the first longitudinal support sheet 41 and the second longitudinal support sheet 42 are respectively located at the two side edges between the upper protective sheet 31 and the lower protective sheet 32, and the first longitudinal support sheet 41 is located at the position of the first protection area 301, and the second longitudinal support sheet 42 is located at the position of the third protection area 303; the longitudinal separator 43 is located in the middle position between the upper protective sheet 31 and the lower protective sheet 32 and extends into the inner cavity of the stretched bite pad 2, thereby dividing the inner cavity between the upper protective sheet 31 and the lower protective sheet 32 into a left suction groove 401 and a right suction groove 402 located on the left and right sides respectively, and the left suction groove 401 and the right suction groove 402 are connected to the angle connecting tube 1 through the inner cavity of the bite stretching pad 2.

[0028] Multiple suction holes 5 are provided on the upper protective sheet 31, lower protective sheet 32, first longitudinal support sheet 41, and second longitudinal support sheet 42. These holes communicate with the left suction groove 401 and right suction groove 402. In this embodiment, the suction holes 5 are leaf-shaped. The suction holes 5 on the upper and lower protective sheets 31, 32 are arranged along their edges, while the suction holes 5 on the first and second longitudinal support sheets 41, 42 are arranged in a straight line.

[0029] The outer surface of the bite pad 2 is symmetrically provided with two upper and lower groups of bite grooves 21. Each group of bite grooves 21 is composed of eight teardrop-shaped grooves 201. The bite pad 2 is also provided with multiple bite pad suction holes 22 that communicate with the inner cavity of the bite pad 2. A protruding saliva suction port 6 is also provided on the outer surface of the bite pad 2. This port is located between the two groups of bite grooves 21 and communicates with the left and right suction grooves 401 and 402 through the inner cavity of the bite pad 2.

[0030] See also Figure 13 During use, the patient bites the teeth on the side not requiring treatment onto the two sets of bite grooves 21 of the bite pad 22, keeping their mouth open. The transparent protective sheet 3 is placed in the patient's mouth to protect the tongue and throat. It also passes from the deepest part of the gums on the side of the treated teeth, around the dentition, and adheres to the inside of the cheek, protecting the buccal mucosa. The width of the two sets of bite grooves 21 matches the width of the teeth, and the teardrop-shaped groove 201 is designed to match the tooth occlusion. The bite pad 22 can be moved freely within the mouth to easily attach to any tooth. Therefore, the bite pad 22 can be fixed anywhere in the mouth, which is very convenient.

[0031] During treatment, the angled connecting tube 1 is connected to a saliva suction machine, which generates a strong negative pressure to suck saliva and contaminated fluids from the patient's mouth through the suction holes 5, the left suction groove 401, the right suction groove 402, the inner cavity of the open bite pad 2, and the angled connecting tube 1. Because the upper protective sheet 31, the lower protective sheet 32, the first longitudinal support sheet 41, and the second longitudinal support sheet 42 have multiple densely arranged suction holes 5, multiple suction channels are formed, connecting to the left suction groove 401 and the right suction groove 402. These multiple suction channels operate simultaneously, and with the support of the first and second longitudinal support sheets 41, 42, the upper protective sheet 31 and the lower protective sheet 32 will not adhere to each other, thus ensuring the channel width of the left suction groove 401 and the right suction groove 402, and preventing the suction channels from being blocked by the adhesion of the upper protective sheet 31 and the lower protective sheet 32.

[0032] The function of the saliva suction port 6 is to increase the negative pressure. When the negative pressure needs to be further increased, the saliva suction port 6 can be blocked.

[0033] This oral suction catheter is disposable, which can reduce pollution and avoid cross infection.

Claims

1. An angled, double-sided, protective oral suction catheter, comprising an angled connecting tube (1), an opening bite pad (2), and a transparent protective sheet (3), wherein both ends of the opening bite pad (2) are connected to the angled connecting tube (1) and the transparent protective sheet (3), respectively, and wherein: The transparent protective sheet (3) comprises an upper protective sheet (31) and a lower protective sheet (32), and a first longitudinal support sheet (41), a second longitudinal support sheet (42) and a longitudinal separator (43) are provided between the upper protective sheet (31) and the lower protective sheet (32), wherein the first longitudinal support sheet (41) and the second longitudinal support sheet (42) are respectively located at the two side edges between the upper protective sheet (31) and the lower protective sheet (32), and the longitudinal separator (43) is located in the middle between the upper protective sheet (31) and the lower protective sheet (32) and extends to the open bite pad (2). The inner cavity of the upper protective sheet (31) and the lower protective sheet (32) is divided into a left suction groove (401) and a right suction groove (402) located on the left and right sides respectively, and the left suction groove (401) and the right suction groove (402) are connected to the angle connection tube (1) through the bite-opening pad (2); a plurality of suction holes (5) connected to the left suction groove (401) and the right suction groove (402) are provided on the upper protective sheet (31), the lower protective sheet (32), the first longitudinal support sheet (41) and the second longitudinal support sheet (42).

2. The angle-opening double-sided protective oral suction catheter according to claim 1, characterized in that: Two groups of bite grooves (21) are symmetrically arranged on the outer surface of the stretched bite pad (2), and each group of bite grooves (21) is composed of eight teardrop-shaped grooves (201) arranged in an array. The stretched bite pad (2) is also provided with a plurality of bite pad suction holes (22) that are connected to the inner cavity of the stretched bite pad (2).

3. The angle-opening double-sided protective oral suction catheter according to claim 1 or 2, characterized in that: The outer surface of the bite stretch pad (2) is also provided with an outwardly protruding saliva suction port (6), and the saliva suction port (6) is connected to the left suction groove (401) and the right suction groove (402).

4. The angle-opening double-sided protective oral suction catheter according to claim 1, characterized in that: The transparent protective sheet (3) comprises a first protection zone (301), a second protection zone (302) and a third protection zone (303), wherein the second protection zone (302) has the narrowest width, and the first protection zone (301) and the third protection zone (303) have similar widths; the first longitudinal support sheet (41) is located in the first protection zone (301), and the second longitudinal support sheet (42) is located in the third protection zone (303).

5. The angle-opening double-sided protective oral suction catheter according to claim 1, characterized in that: The angle connecting tube (1) is in the shape of an obtuse angle of 135 degrees as a whole, and the cross section of one end thereof connected to the expanded bite pad (2) is elliptical, while the cross section of the other end thereof gradually shrinks into a circle.

6. The angle-opening double-sided protective oral suction catheter according to claim 1, characterized in that: The suction hole (5) is in the shape of a leaf.