Oral pad for general anesthesia patient surgery

Abstract

The application relates to a mouth pad for general anesthesia patients, which comprises an outer blocking ring, the outer circumferential side edge of the outer blocking ring is provided with a positioning gap for tracheal tube positioning, a mouth pad tube capable of being inserted into the human mouth axially extends on the inner side of the outer blocking ring, the mouth pad tube has a hollow channel, the mouth pad tube has a hard support cylinder part connected to the outer blocking ring, and an inner extension tube connected to the hard support cylinder part and extending to the pharynx of the human body and matched with the oral cavity of the human body, a plurality of rows of hollow holes are distributed around the inner extension tube, each row of hollow holes is composed of a plurality of hollow holes distributed along the length direction of the inner extension tube, and the inner extension tube is a soft tube capable of being elastically bent and deformed, so that the front end port of the inner extension tube can be attached to the oral cavity mucosa of the human body and closed after deformation, and a sputum suction device connector is arranged on the outer port of the outer blocking ring, the sputum suction device connector is removably inserted into the outer port. Relatively complete and reliable sputum suction of the patient is realized.

Description

Technical Field

[0001] This invention relates to medical devices, specifically mouth pads for patients undergoing general anesthesia. Background Technology

[0002] Patients undergoing general anesthesia (such as those undergoing oral and ENT surgery) typically require an endotracheal tube for breathing. To prevent patients from biting the endotracheal tube after anesthesia, a mouth pad is placed in the patient's mouth. The mouth pad usually has a notch along its edge for positioning the endotracheal tube. Simultaneously, the mouth pad is hollow, providing a channel through which the physician can insert a suction catheter for suctioning. Because the mouth pad's channel is centrally located, the reach of the suction catheter is limited (since the tubular portion of the mouth pad is a short, rigid plastic tube, while the suction catheter is a small-diameter soft tube, it is essentially positioned directly opposite the opening of the channel). Furthermore, patients often have a large amount of thick sputum in their mouths, and thick sputum is usually also present on the inner edge of the throat, leading to incomplete suctioning. This can cause coughing and choking after the patient awakens from surgery, and in severe cases, aspiration of sputum into the lungs.

[0003] Existing technological improvements involve designing corresponding suction channels and oral humidification structures on the endotracheal tube. However, this inevitably increases the diameter of the endotracheal tube, making it bulky. During intubation, this can obstruct the view of the glottis, laryngoscope blade, or the tip of the endotracheal tube, hindering the successful intubation process. Existing technology also includes mouth pads with suction functions, such as those described in patents CN202322282684.6 and CN 202421249370.4. However, these are used in mouth pads for endoscopic procedures, where the suction tube is fixed to the outside of the tubular structure of the mouth pad, making it unsuitable for use during general anesthesia. Therefore, providing a suction technique for patients with endotracheal tube intubation who can undergo general anesthesia has become an important research topic. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies by providing a surgical mouth pad for patients under general anesthesia with auxiliary suctioning function, enabling patients to achieve more thorough and reliable suctioning.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A surgical mouth pad for patients under general anesthesia includes an outer retaining ring with a positioning notch for positioning an endotracheal tube along its outer periphery. A mouth pad tube extends axially from the inner side of the outer retaining ring, having a hollow channel. The mouth pad tube also has a rigid support tube connected to the outer retaining ring for supporting the patient's teeth. An inner extension tube is connected to the rigid support tube. The inner extension tube is characterized by being arc-shaped, extending to the pharynx and conforming to the oral cavity. Multiple rows of perforated holes are distributed around the inner extension tube, each row consisting of multiple perforated holes distributed along the length of the inner extension tube from near its end. The inner extension tube is constructed to maintain its channel shape after insertion into the oral cavity and is a flexible tube capable of elastic bending and deformation under negative pressure, allowing the front end of the inner extension tube to conform to and close the oral mucosa after deformation. The outer port of the outer retaining ring is equipped with a suction device connector, which is removably plugged into the outer port.

[0006] Preferably, the inner extension tube has perforated holes distributed around the reversing position near the arc-shaped bend, and perforated holes are provided on the radial side of the arc-shaped bend of the inner extension tube.

[0007] Preferably, it also includes a sputum thinning pipeline, which includes an injection tube extending from the outer retaining ring. The outer end of the injection tube is provided with a humidification connector, and the inner end of the injection tube is connected to a humidification pipeline embedded in the mouth pad tube. The humidification pipeline includes several water spraying channels distributed circumferentially on the inner extension tube. The water spraying channels and the perforated holes are staggered circumferentially. The inner extension tube is provided with several atomizing holes connected to the water spraying channels for the humidification liquid to be sprayed out.

[0008] Preferably, the humidification pipeline further includes an annular diversion groove on the inner end face of the rigid support cylinder, and a sleeve portion extending from the end of the inner extension pipe. The sleeve portion includes an outer sleeve ring, an axial connection end face located at the axial inner end of the outer sleeve ring, and an annular inner diameter side sealing insertion wall located on the inner diameter side of the axial connection end face. The water inlet port of the water spray passage is located on the axial connection end face. The outer sleeve ring is sealed and fitted outside the rigid support cylinder. The annular inner diameter side sealing insertion wall is sealed and fitted with the inner ring of the rigid support cylinder. The axial connection end face is spliced ​​with the inner end face of the rigid support cylinder. The water inlet port of the water spray passage is connected to the annular diversion groove.

[0009] When the mouth pad is inserted into the patient's mouth, the tube end of the mouth pad can reach the patient's pharynx. Because the inner extension tube has an arc-shaped design, it is positioned low when the patient is in a supine position with the maxilla elevated. This allows for humidification of the patient's oral cavity during sputum suction to dilute the sputum. Ideally, a double-balloon type endotracheal tube should be used to achieve airway closure, ensuring that diluent does not enter the body.

[0010] The soft extension tube of the mouth pad of this invention enables more flexible sputum suction. The inner extension tube, designed to fit the human oral cavity, is flexible and bendable, and features perforated holes. After the mouth pad is equipped with a suction device connector, it can be directly used for sputum suction, achieving suction of the patient's oral cavity, pharynx, and surrounding areas. Specifically, the suction device connector is connected to the mouth pad, and the connector is connected to a suction device. The suction action of the suction device creates negative pressure, causing the inner extension tube to deform. After deformation, the front end of the inner extension tube can adhere to and seal against the oral mucosa, allowing sputum to be suctioned out through the perforated holes along the channel, thus achieving sputum suction of the patient's pharynx and surrounding areas. This solves the problem of incomplete suction caused by the small diameter of traditional suction tubes. In addition, the hollow channel of the mouth pad can be used as an operating channel for inserting a suction catheter. A disposable suction catheter can be inserted into the channel for suctioning. The inner extension tube with perforations serves as a sputum guide, allowing sputum to converge towards the lower part of the inner extension tube. The suction end of the suction catheter draws in the sputum at the lower part of the inner extension tube. In other words, the inner extension tube both guides the suction catheter to the pharynx and serves as a sputum guide, allowing sputum to converge for suction. Simultaneously, since patients' sputum is usually thick, the thick sputum dilution tube provided with the mouth pad can spray humidifying fluid into the patient's oral cavity. The spray path can be set circumferentially to better dilute the thick sputum. It should be noted that the accompanying endotracheal tube is a double-balloon type. During humidification, the balloon of the endotracheal tube is used to seal the patient's airway, preventing fluid from entering the patient's lungs.

[0011] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0012] Figure 1 This is a diagram showing the state of the mouth pad of the present invention equipped with a suction device connector; Figure 2 This is a diagram showing the disassembled state of the mouth pad and the suction device connector of the present invention; Figure 3 This is an exploded view of the mouth pad body of the present invention; Figure 4 This is a schematic diagram of the structure of the inner extension tube of the present invention; Figure 5 This is a schematic diagram of the mouth pad of the present invention being inserted into the human body (only the position and state of the mouth pad are shown in the figure, and details such as the specific hollow holes are omitted). Detailed Implementation

[0013] See appendix Figures 1-4This invention discloses a surgical mouth pad for patients under general anesthesia. The inner extension tube is an arc-shaped tube that extends to the pharynx and is adapted to the oral cavity. Multiple rows of perforated holes are distributed around the inner extension tube. Each row of perforated holes consists of multiple perforated holes distributed along the length of the inner extension tube from near the end of the tube. The inner extension tube is constructed to maintain its channel shape after being inserted into the oral cavity; and is a soft tube that can elastically bend and deform under negative pressure. This allows the front end of the inner extension tube to adhere to the oral mucosa and seal the outer retaining ring 1 of the mouth pad after deformation. The side edge is provided with a positioning notch 11 for positioning the endotracheal tube. An oral pad tube 2 extends axially from the inner side of the outer retaining ring 1, allowing it to be inserted into the patient's mouth. The oral pad tube 2 has a hollow channel 20 and a rigid support cylinder 21 connected to the outer retaining ring 1. The rigid support cylinder 21 is connected to an inner extension tube 22. The rigid support cylinder 21 and the outer retaining ring 1 are integrally formed. The rigid support cylinder 21 provides support for the patient's oral occlusion, thereby preventing the patient from biting the tube. To achieve more thorough removal of sputum from the patient's mouth, the original hollow channel of the oral pad is retained. Based on this, the following optimized design is made: the inner extension tube 22 is an arc shape that extends to the human pharynx and is adapted to the human oral cavity. The curvature of the inner extension tube 22 can be designed according to ergonomics, which can be obtained by those skilled in the art through limited experiments under the guidance of this invention. Therefore, its specific parameters are not described in detail. The inner extension tube 22 has multiple rows of hollow holes 221 distributed around it. Each row of hollow holes 221 is composed of multiple hollow holes 221 distributed along the length direction of the inner extension tube 22 from near the end of the inner extension tube 22. The inner extension tube 22 is constructed to be inserted into the human body. The inner extension tube 22 is a flexible tube that can maintain its channel shape behind the mouth and can be elastically bent and deformed under negative pressure. This allows the front port 220 of the inner extension tube 22 to conform to and close the oral mucosa after deformation. In other words, the inner extension tube 22 maintains a certain rigidity and will not be completely compressed and flattened after being inserted into the mouth. At the same time, it has the ability to deform. During negative pressure suction, the inner extension tube 22 can be adsorbed and deformed, and the port of the inner extension tube 22 moves accordingly to conform to the oral mucosa. The outer port of the outer retaining ring 1 of the mouth pad is equipped with a suction device connector 3, which is removably plugged into the outer port 12. The suction device connector can refer to the connector design of a disposable suction tube. The suction device connector has a plug end, which can be inserted and removed from the outer port of the mouth pad for assembly and removal. The mouth pad of the present invention can realize a variety of sputum suction operations and achieve a more thorough sputum suction effect. When peripheral sputum suction is required, the sputum suction device connector is inserted into the outer port of the mouth pad, and the sputum suction device connector is connected to the sputum suction device to perform suction action. The inner extension tube 22 can be adsorbed and deformed, and the port of the inner extension tube 22 moves and adheres to the oral mucosa of the human body. Sputum can enter the channel of the mouth pad through the perforated hole and be sucked. In order to achieve a more reliable seal, if necessary, the doctor can close the patient's mouth and nose (such as by using nasal plugs and pinching the mouth and nose with the hand) to improve the sputum suction effect.The inner extension tube can be made of medical-grade silicone. The deformation capacity of the inner extension tube can be determined by those skilled in the art through limited testing; therefore, its specific parameters will not be elaborated upon. The front edge of the inner extension tube is typically rounded to avoid damaging the oral cavity. Simultaneously, the mouth pad maintains the traditional external suctioning procedure: the suction device connector is removed, exposing the outer end of the mouth pad, and the disposable suction tube enters the oral cavity along the channel for suctioning. Alternatively, after sputum dilution, the inner extension tube 22 reaches the pharynx, creating a drainage effect for the diluted sputum. When the mouth pad is placed in the patient's oral cavity, the tube end of the mouth pad can reach the pharynx. Furthermore, due to the arc-shaped design of the inner extension tube, see the appendix. Figure 5 With the patient in the supine position and jaw raised, the inner extension tube is positioned low near the reversal point. The diluted sputum flows through the perforations on the inner extension tube and converges at the low position of the inner extension tube, allowing the suction end of the suction catheter to be placed in this low position to aspirate the sputum.

[0014] The inner extension tube 22 has perforated holes 221 distributed around the reversing position near the arc-shaped bend, and perforated holes 221 are also provided on the radial side of the arc-shaped bend of the inner extension tube 22. The perforated holes 221 are provided at a low position in the inner extension tube at the reversing position to ensure smooth collection of sputum.

[0015] Since the inner extension tube extends into the human pharynx, it is difficult to dilute the sputum after the patient is intubated. Therefore, in order to better realize the sputum suction operation, a thick sputum dilution tube is also included. The thick sputum dilution tube includes an injection tube 41 extending from the outer retaining ring 1 of the mouth pad. The outer end of the injection tube 41 is provided with a humidification connector 42. The inner end of the injection tube 41 is connected to a humidification tube embedded in the mouth pad tube 2. The humidification tube includes several water spraying channels 43 distributed circumferentially on the inner extension tube. The water spraying channels 43 and the perforated holes 221 are staggered circumferentially. The inner extension tube 22 is provided with several atomizing holes 431 connected to the water spraying channels 43 for the humidification liquid to be sprayed out. Before suctioning, especially before using the inner extension tube of the mouthpiece, oral humidification should be performed. This serves two purposes: firstly, it thins the thick sputum, making it easier to suction; secondly, the humidified sputum creates a sealing effect, allowing for better sealing of the inner extension tube's front end during suctioning via the suction device connector. This causes the inner extension tube to deform and conform to the oral cavity wall, thus drawing sputum through the perforated holes, ensuring smoother suctioning and more thorough sputum removal. With the inner extension tube also functioning as a humidifier, it better matches the patient's oral humidification position, solving the problem of inconvenience and facilitating the humidification process. When oral sputum needs to be thinned, a double-balloon endotracheal tube is preferred. During humidification, the balloon of the endotracheal tube is used to seal the patient's airway, preventing fluid from entering the lungs.

[0016] In this specific embodiment, the humidification pipeline further includes an annular diversion groove 44 disposed on the inner end face of the rigid support cylinder 21. The inner extension pipe 22 extends to a sleeve portion 222 at its end. The sleeve portion 222 includes an outer sleeve ring 2221, an axial connecting end face 2222 located at the axial inner end of the outer sleeve ring 2221, and an annular inner diameter side sealing insertion wall 2223 located on the inner diameter side of the axial connecting end face 2222. The water inlet port of the water spray passage 43 is located on the axial connecting end face 2222. The outer sleeve ring 2221 is sealed and fitted onto the outside of the rigid support cylinder 21. The annular inner diameter side sealing insertion wall 2223 is sealed and fitted with the inner ring of the rigid support cylinder 21. The axial connecting end face 2222 is spliced ​​with the inner end face of the rigid support cylinder 21. The water inlet port of the water spray passage 43 is connected to the annular diversion groove 44. Wherein, as... Figure 4 As shown, the annular inner diameter side sealing joint wall 2223 can be a ring-shaped structure with an axially protruding end face. The annular inner diameter side sealing joint wall 2223 is fitted onto the inner wall of the rigid support cylinder 21 to achieve a reliable sealing fit. Alternatively, the annular inner diameter side sealing joint wall can be the inner wall of the inner extension tube that is lower than the axial connection end face. A thin-walled ring extends axially from the rigid support cylinder and is inserted into the inner extension tube.

Claims

1. A mouth pad for patients undergoing general anesthesia, comprising an outer retaining ring, a positioning notch for positioning an endotracheal tube provided on the outer peripheral edge of the outer retaining ring, a mouth pad tube extending axially on the inner side of the outer retaining ring, the mouth pad tube having a hollow channel, and a rigid support cylinder portion connected to the outer retaining ring for supporting the patient's teeth, the rigid support cylinder portion being connected to an inner extension tube, characterized in that: The inner extension tube is an arc shape that extends to the human pharynx and is adapted to the human oral cavity. Multiple rows of perforated holes are distributed around the inner extension tube. Each row of perforated holes is composed of multiple perforated holes distributed from near the end of the inner extension tube along the length of the inner extension tube. The inner extension tube is constructed to maintain the channel shape after being inserted into the human oral cavity. Furthermore, the flexible tube can be elastically bent and deformed under negative pressure, so that the front end of the inner extension tube can fit into and seal the oral mucosa after deformation. The outer port of the outer retaining ring is equipped with a suction device connector, which is removably plugged into the outer port.

2. The surgical mouth pad for patients under general anesthesia according to claim 1, characterized in that: The inner extension tube has perforated holes distributed around the reversing position near the arc-shaped bend, and perforated holes are also provided on the radial side of the arc-shaped bend of the inner extension tube.

3. The surgical mouth pad for patients under general anesthesia according to claim 2, characterized in that: It also includes a sputum thinning pipeline, which includes an injection tube extending from the outer retaining ring. The outer end of the injection tube is equipped with a humidification connector, and the inner end of the injection tube is connected to a humidification pipeline embedded in the mouth pad tube. The humidification pipeline includes several water spraying channels distributed circumferentially on the inner extension tube. The water spraying channels and the perforated holes are staggered circumferentially. The inner extension tube is equipped with several atomizing holes connected to the water spraying channels for the humidification liquid to be sprayed out.

4. The surgical mouth pad for patients under general anesthesia according to claim 3, characterized in that: The humidification pipeline also includes an annular diversion groove on the inner end face of the rigid support cylinder. The end of the inner extension pipe extends to a sleeve portion, which includes an outer sleeve ring, an axial connection end face located at the axial inner end of the outer sleeve ring, and an annular inner diameter side sealing insertion wall located on the inner diameter side of the axial connection end face. The water inlet of the water spray passage is located on the axial connection end face. The outer sleeve ring is sealed and fitted outside the rigid support cylinder. The annular inner diameter side sealing insertion wall is sealed and fitted with the inner ring of the rigid support cylinder. The axial connection end face is spliced ​​with the inner end face of the rigid support cylinder. The water inlet of the water spray passage is connected to the annular diversion groove.

Images