Oral cavity closing prevention device for digestive endoscopy

Abstract

The invention relates to the technical field of medical instruments, in particular to an oral cavity closing prevention device for digestive endoscopy. Comprising a circular tube, an inflation device and a drainage tube, an elastic piece is attached to the exterior of the inflation device, longitudinal supporting mechanisms are rotatably arranged at the two ends of the elastic piece and used for opening the oral cavity and the lower jaw of a patient, and telescopic plates are slidably arranged between the supporting mechanisms and the circular tube; a connecting structure used for applying pressure to the expansion assembly is arranged between the longitudinal supporting mechanism and the transverse supporting mechanism, and a filling area is formed between every two adjacent supporting mechanisms. The movable plate is used for applying pressure to the air bags in the transverse supporting plate, the air bags expand and extend outwards firstly, and when the air bags on the two sides make contact, the connecting baffle is matched with the movable plate to indirectly apply pressure to the transverse supporting plate through the air bags, so that the transverse supporting plate expands the mouth of a patient in the transverse direction, and the longitudinal supporting plate and the transverse supporting plate are prevented from moving at the same time; and the comfort of the mouth in the transverse direction is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to an oral cavity closure prevention device for digestive endoscopy. Background Art

[0002] Gastroscopy is a medical examination method and also refers to the instrument used for this examination. Gastroscopy is a thin, soft tube inserted into the stomach, allowing the doctor to directly observe the lesions of the esophagus, stomach and duodenum. During gastroscopy, in order to facilitate the insertion of the gastroscopy tube from the mouth into the stomach, the mouth needs to be kept open at all times. Due to the structure of the human mandible and maxilla, the horizontal width of the patient's mouth is greater than the vertical width.

[0003] At present, a patient oral fixation device used in the process of digestive endoscopy has been proposed in the Chinese patent announcement number: CN113499148A, including a fixing mechanism, the fixing mechanism includes a circular ring, the left and right ends of the circular ring are fixedly connected with a bellows, the middle part of the bellows is fixedly connected with a Y-shaped tube, and the bottom end of the Y-shaped tube is fixedly connected with a latex ball. The patient oral fixation device used in the process of digestive endoscopy controls the squeezing of the latex ball to make the bellows expand and contract, thereby changing the spacing between the support blocks, the elastic sheet is resisted and moved away from each other so that the upper support block and the lower support block are close to each other, and the rubber blocks are driven away from each other under the hinge rod, increasing the lateral size of the equipment while reducing the longitudinal size. When the limit plate rotates to limit the position, the slot block moves up and down cyclically, the air pressure inside the air cavity changes and cooperates with the upper and lower baffles to open and close, so that saliva is sucked out.

[0004] Because the existing fixing device requires the patient to open his mouth as wide as possible before stretching it to facilitate insertion, in this process, because the positions of the adjusted upper and lower support blocks are fixed and the upper and lower support blocks move at the same time, this will increase the lateral size of the equipment while reducing the longitudinal size, causing discomfort in the patient's mouth, and when the patient undergoes a gastroscopy, saliva will be secreted inside the mouth, and when the upper and lower support blocks support the mouth, the two blocks separate and change the shape of the mouth, so that a gap is formed between the mouth and the area between the upper and lower support blocks, which can easily cause saliva overflow and increase the workload of later medical staff. Summary of the invention

[0005] The present invention provides a device for preventing oral closure for digestive endoscopy, which uses a movable plate to pressurize an airbag in a transverse support plate, and the airbag first expands and extends outward, and when the airbags on both sides contact, the connecting baffle cooperates with the movable plate to indirectly pressurize the transverse support plate through the airbag, so that the transverse support plate expands the patient's mouth in the transverse direction, thereby avoiding the longitudinal and transverse support plates from moving at the same time, improving the comfort of the mouth in the transverse direction, and thus solving the problems raised in the above-mentioned background technology, namely:

[0006] To achieve the above purpose, the oral cavity closure prevention device for digestive endoscopy includes a round tube, an inflating device and a drainage tube. The inflating device is provided with an elastic sheet on the outside. The two ends of the elastic sheet are rotatably provided with longitudinal support mechanisms. The support mechanism is used to open the patient's oral cavity and lower jaw. A telescopic plate is slidably provided between the support mechanism and the round tube.

[0007] Among them, an expansion component is provided inside the support mechanism, and a connecting structure for applying pressure to the expansion component is arranged between the longitudinal support mechanism and the transverse support mechanism, and a filling area is formed between adjacent support mechanisms. The connecting structure applies pressure to the expansion component, so that the expansion components in the longitudinal support mechanism and the transverse support mechanism are squeezed against each other, and cooperate with the connecting structure and the bent elastic sheet to form a barrier to the mutually squeezed expansion components, thereby realizing the filling of the filling area by the expansion component to inhibit the overflow of saliva.

[0008] Secondly, the expansion component is an airbag arranged in the support plate, which extends inside the airbag to limit the outflow of saliva, and the interior of the support plate is hollow and is used to accommodate the airbag. A partition surrounded by the airbag is fixedly arranged in the support mechanism, and there is a channel between the partitions on both sides. The partition divides the interior of the support plate into a contraction cavity and an expansion cavity, and the airbag fills the contraction cavity and the expansion cavity.

[0009] Therefore, with respect to the above technical solution, when the airbag in the contraction cavity is squeezed by the connecting structures at both ends, since the support plate surrounds the airbag and limits the expansion of the airbag, the airbag in the expansion cavity expands toward the opening at the end of the support plate. As the volume of the airbag gradually increases, its outer surface expands toward the surrounding space and actively extends toward the filling area, thereby reducing the filling area between the two support plates and hindering the outflow of saliva from between the filling areas.

[0010] When the airbags are squeezed, the two contacting airbags will be squeezed outward. Here, the connecting structure includes a movable plate slidably set in the contraction cavity, and a connecting baffle rotatably set with the movable plate. The connecting baffle forms an obstacle to the inflated airbag by rotating, and the movable plate is respectively fitted with the partition and the airbag in the contraction cavity.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. Use the movable plate to apply pressure to the airbag in the transverse support plate. The airbag will first expand and extend outward. When the airbags on both sides are in contact, the connecting baffle cooperates with the movable plate to indirectly apply pressure to the transverse support plate through the airbag, so that the transverse support plate expands the patient's mouth in the transverse direction, thereby avoiding the simultaneous movement of the longitudinal and transverse support plates and improving the comfort of the mouth in the transverse direction.

[0013] 2. The movable plates on both sides contract toward the middle to apply pressure to the airbag, causing the airbag in the expansion chamber to expand outward. When the airbags squeeze each other, the airbags fill the filling area, and the connecting baffle and the bent elastic sheet effectively prevent the overflowing airbag from continuing to expand outward after contact. At the same time, the inflated airbag contacts the patient's mouth, making the mouth skin fit closely to the airbag, thereby preventing saliva from flowing out and increasing the workload of medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a front view of the connection structure between the support plate and the connection baffle of the present invention;

[0016] Figure 3 This is a schematic diagram of the explosion structure of the silicone pad, connecting baffle, airbag and support plate of the present invention;

[0017] Figure 4 It is a front view of the bending structure of the elastic sheet of the present invention;

[0018] Figure 5 It is a front view of the airbag expansion principle structure of the present invention;

[0019] Figure 6 It is a schematic diagram of the local structure of the support plate and the elastic sheet of the present invention;

[0020] Figure 7 It is a schematic diagram of the filling structure of the filling area of ​​the airbag of the present invention.

[0021] The meaning of each number in the figure is:

[0022] 100, round tube; 110, inflatable device; 111, telescopic plate; 112, drainage pipe;

[0023] 113. Elastic sheet;

[0024] 120, support mechanism; 121, silicone pad; 122, support plate; 123, slide groove;

[0025] 130. connection structure; 131. connection baffle; 132. movable plate; 133. filling area;

[0026] 140. Airbag; 141. Partition. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] During the mouth expansion process, the upper and lower support blocks move simultaneously, which increases the lateral size of the device while reducing the longitudinal size, causing discomfort in the patient's mouth.

[0029] In addition, when the patient undergoes gastroscopy, saliva will be secreted in the oral cavity. When the upper support block and the lower support block support the mouth, the two blocks separate and change the shape of the mouth, so that a gap is formed between the mouth and the area between the upper support block and the lower support block, which is easy to cause saliva to overflow, increasing the workload of the medical staff in the later stage. The present invention provides a device for preventing oral closure for digestive endoscopy, see Figure 1-Figure 3 As shown, it includes a round tube 100, an inflatable device 110 and a discharge tube 112, wherein an elastic sheet 113 is fitted on the outside of the inflatable device 110. When the inflatable device 110 is in use, the middle part of the elastic sheet 113 is pushed outward, so that the middle part of the elastic sheet 113 extends outward. Since the two ends of the elastic sheet 113 are rotatably provided with longitudinal support mechanisms 120, the support mechanisms 120 are used to open the patient's oral cavity and lower jaw, and a telescopic plate 111 is slidably provided between the support mechanism 120 and the round tube 100, the two ends of the elastic sheet 113 are retracted inwardly under the restriction of the support mechanism 120, that is, Figure 4 The arrows e1 and e2 shown point to;

[0030] Secondly, the support mechanism 120 has an expansion component inside, and a connecting structure 130 for applying pressure to the expansion component is provided between the longitudinal support mechanism 120 and the transverse support mechanism 120, and a filling area 133 is formed between adjacent support mechanisms 120. Here, when the patient lies on his side on the bed, the device is first held in the mouth for use, and then the expansion degree of the oral cavity is adjusted by the inflatable device 110, the elastic sheet 113 bends (the bending direction is referenced to Figure 4 In positions f1 and f2), the longitudinal support mechanism 120 moves inwards, and the connecting structure 130 applies pressure to the expansion component, so that the longitudinal support mechanism 120 and the expansion components in the transverse support mechanism 120 are squeezed against each other, and the connecting structure 130 and the bent elastic sheet 113 cooperate to form a barrier to the mutually squeezed expansion components, so that the expansion component fills the filling area 133 to inhibit the overflow of saliva. At the same time, under the action force and reaction force, the expansion component forms an obstacle to the connecting structure 130, so that the transverse support mechanism 120 opens the patient's mouth, thereby opening the mouth to a comfortable degree for the patient, which is convenient for medical staff to operate.

[0031] Here, in combination with the above basic conditions, the specific structure of the support mechanism 120 is shown. The support mechanism 120 includes a silicone pad 121 and a support plate 122 bonded to the inner side of the silicone pad 121. When in use, the device is first placed in the patient's mouth. The silicone pad 121 and the support plate 122 are both arc-shaped, which is convenient for adapting to the patient's mouth shape. Among them, the longitudinal support plate 122 opens the upper and lower ends of the mouth, and the transverse support plate 122 opens the two sides of the mouth corners, so that medical personnel can easily perform subsequent operations to achieve the purpose of examination.

[0032] Secondly, the expansion component referred to above is the airbag 140 disposed in the support plate 122, and the airbag 140 is used to extend into the filling area 133 to limit the outflow of saliva.

[0033] Next, the interior of the support plate 122 is hollow and is used to accommodate the airbag 140. A partition 141 surrounded by the airbag 140 is fixedly arranged in the support mechanism 120. There is a channel between the partitions 141 on both sides. The partition 141 divides the interior of the support plate 122 into a contraction cavity and an expansion cavity. The airbag 140 fills the contraction cavity and the expansion cavity. That is, when the airbag 140 in the contraction cavity is squeezed by the connecting structures 130 at both ends, the support plate 122 surrounds the airbag 140 and limits the expansion of the airbag 140. Therefore, the airbag 140 in the contraction cavity is The gas is transported to the airbag 140 in the expansion cavity. At this time, the airbag 140 in the expansion cavity expands toward the opening at the end of the support plate 122. As the volume of the airbag 140 gradually increases, its outer surface expands toward the surrounding space and actively extends toward the area where the gap exists. The material of the airbag 140, with its good elasticity and plasticity, gradually occupies the filling area 133 originally between the longitudinal and transverse support plates 122, thereby reducing the filling area 133 between the two support plates 122 and hindering the outflow of saliva from between the filling area 133.

[0034] The airbag 140 is squeezed by the connecting structure 130, which includes a movable plate 132 slidably arranged in the contraction cavity, and a connecting baffle 131 rotatably arranged with the movable plate 132. The movable plate 132 is respectively attached to the partition 141 and the airbag 140 in the contraction cavity, and then combined with the connecting baffle 131 to form a connecting baffle 131. Figure 5 , Figure 6As shown, the movable plates 132 on both sides shrink toward the middle to apply pressure to the airbag 140, and the directions of movement of the airbags 140 on both sides are h1 and h2 respectively, and the airbag 140 located in the expansion chamber expands outward, that is, the arrows q1 and q2 point to the direction, and the airbag 140 extends to the filling areas 133 on both sides. At this time, since the longitudinal support plate 122 moves up and down respectively, and the transverse support plate 122 moves left and right, in this process, it also requires a certain force to apply pressure to the airbag 140 in the shrinkage chamber. Therefore, the connecting baffle 131 moves and rotates counterclockwise at the same time, and the connecting baffle 131 forms an obstacle to the expanded airbag 140 by rotating (refer to Figure 4 The dashed line and Figure 3 As shown in the figure, when the airbags 140 in the longitudinal and transverse support plates 122 extend and contact the filling area 133, the connecting baffle 131 on one side effectively prevents the airbags 140 squeezed out after the contact from continuing to expand outward, thereby ensuring the close contact and mutual support between the airbags 140, and then filling the filling area 133 and limiting the squeeze out of saliva, so as to reduce the workload of medical staff.

[0035] Furthermore, when adjusting the size of the patient's mouth opening, the movable plate 132 is used to apply pressure to the airbag 140 in the transverse support plate 122. The airbag 140 will first expand and extend outward, and when the airbags 140 on both sides are in contact, the connecting baffle 131 cooperates with the movable plate 132 to indirectly apply pressure to the transverse support plate 122 through the airbag 140, so that the transverse support plate 122 expands the patient's mouth in the transverse direction, thereby avoiding the simultaneous movement of the longitudinal and transverse support plates 122 and improving the comfort of the mouth in the transverse direction.

[0036] On the other hand, the connecting baffle 131 is arranged in close contact with the support plate 122, the movable plate 132 at one end of the connecting baffle 131 is located in the longitudinal support plate 122, and the movable plate 132 at the other end is located in the transverse support plate 122, and the support plate 122 has a concentrically arranged slide groove 123, which is slidably arranged between the slide groove 123 and the end of the movable plate 132, so that the support plate 122 slides along the track of the slide groove 123 when the support plate 122 applies pressure to the airbag 140.

[0037] Return to Figure 3 and Figure 4 As shown in FIG. 1 , when the airbags 140 in the longitudinal and transverse support plates 122 are squeezed, the angle of the connecting baffle 131 after rotation is reduced relative to the angle at the initial stage (wherein the angle referred to above refers to the inclination angle of the connecting baffle 131 in the horizontal direction, that is, the angle ∠1 before rotation is smaller than the angle ∠2 after rotation). In this process, Figure 4For example, when projected from the front view direction, the connecting baffle 131 increases the coverage of the extended airbag 140, improves the restriction range of the airbag 140, and is beneficial to the close contact of the airbags 140 on both sides. At the same time, when the airbag 140 is just extended, the connecting baffle 131 also has a guiding effect on the airbag 140, so that the airbag 140 is hindered and extends into the filling area 133, so that the two airbags 140 can contact each other later.

[0038] In addition, it can be known through reverse deduction that the downward movement of the support plate 122 is caused by the bending deformation of the elastic sheet 113. The reason for the deformation of the elastic sheet 113 is that it is subjected to the lateral pressure of the inflatable device 110. The inflatable device 110 of the prior art is publicly described below:

[0039] The inflatable device 110 is composed of a bellows, a Y-tube, a latex ball and a stopper. The interior of the bellows is connected with the interiors of the Y-tube and the latex ball. When the lateral dimension of the support plate 122 is first adjusted, the latex ball is pressed so that the gas inside the latex ball is conducted into the bellows through the Y-tube. The air pressure inside the bellows increases, causing the bellows itself to stretch. Because the end of the bellows away from the circular tube 100 is fixedly connected to a stopper, and the other end of the stopper is fixedly connected to the middle of the elastic sheet 113, as the bellows stretches, the stopper presses the elastic sheet 113 toward the side away from the circular tube 100, causing the elastic sheet 113 to gradually shrink and fold while accumulating force.

[0040] Because the end of the elastic sheet 113 is rotatably arranged with the support plate 122, when the elastic sheet 113 is bent, the elastic sheet 113 close to the support plate 122 is close to the filling area 133, and the distance between the elastic sheet 113 and the filling area 133 is reduced. The elastic sheet 113 is used to cooperate with the connecting baffle 131 (the connecting baffle 131 is located on one side of the filling area 133) to block the airbag 140 filled in the filling area 133. Figure 7 As shown, that is, as the bending amplitude of the elastic sheet 113 increases, accompanied by the rotation of the connecting baffle 131, the elastic sheet 113 and the connecting baffle 131 cooperate to limit the airbags 140 extending in the longitudinal and transverse support plates 122. When the airbags 140 squeeze each other, the airbags 140 fill the filling area 133. At the same time, the inflated airbags 140 contact the patient's mouth, so that the mouth skin fits closely with the airbag 140, thereby preventing saliva from flowing out and increasing the workload of medical staff.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for preventing oral cavity closure for digestive endoscopy, comprising a round tube (100), an inflating device (110) and a liquid discharge tube (112), characterized in that: The inflatable device (110) is provided with an elastic sheet (113) on the outside, and longitudinal support mechanisms (120) are rotatably provided at both ends of the elastic sheet (113). The support mechanism (120) is used to open the patient's oral cavity and lower jaw, and a telescopic plate (111) is slidably provided between the support mechanism (120) and the circular tube (100); The support mechanism (120) has an expansion component inside, and a connection structure (130) for applying pressure to the expansion component is provided between the longitudinal support mechanism (120) and the transverse support mechanism (120), and a filling area (133) is formed between adjacent support mechanisms (120). The connection structure (130) applies pressure to the expansion component, so that the expansion components in the longitudinal support mechanism (120) and the transverse support mechanism (120) are squeezed against each other, and cooperate with the connection structure (130) and the bent elastic sheet (113) to form a barrier for the mutually squeezed expansion components, so that the expansion component fills the filling area (133) to inhibit the overflow of saliva.

2. The oral cavity closure prevention device for digestive endoscopy according to claim 1, characterized in that: The support mechanism (120) comprises a silicone pad (121) and a support plate (122) bonded to the inner side of the silicone pad (121); the silicone pad (121) and the support plate (122) are both arc-shaped and adapted to the shape of the patient's mouth.

3. The oral cavity closure prevention device for digestive endoscopy according to claim 1, characterized in that: The expansion component is an air bag (140) arranged in the support plate (122), and the air bag (140) is used to extend into the filling area (133) to limit the outflow of saliva.

4. The oral cavity closure prevention device for digestive endoscopy according to claim 2, characterized in that: The support plate (122) is hollow inside and is used to accommodate the airbag (140). A partition (141) surrounded by the airbag (140) is fixedly arranged inside the support mechanism (120), and a channel is provided between the partitions (141) on both sides.

5. The oral cavity closure prevention device for digestive endoscopy according to claim 4, characterized in that: The partition (141) divides the inside of the support plate (122) into a contraction cavity and an expansion cavity, and the airbag (140) fills the contraction cavity and the expansion cavity.

6. The oral cavity closure prevention device for digestive endoscopy according to claim 5, characterized in that: The connection structure (130) comprises a movable plate (132) slidably arranged in the contraction cavity, and a connection baffle (131) rotatably arranged with the movable plate (132), wherein the connection baffle (131) forms an obstacle to the inflated airbag (140) by rotating.

7. The oral cavity closure prevention device for digestive endoscopy according to claim 6, characterized in that: The movable plate (132) is respectively fitted with the partition plate (141) and the air bag (140) in the contraction cavity.

8. The oral cavity closure prevention device for digestive endoscopy according to claim 6, characterized in that: The connecting baffle (131) is arranged in close contact with the support plate (122); the movable plate (132) at one end of the connecting baffle (131) is located in the longitudinal support plate (122); the movable plate (132) at the other end is located in the transverse support plate (122); the support plate (122) is provided with a concentrically arranged slide groove (123); the slide groove (123) is slidably arranged between the end of the movable plate (132).

9. The oral cavity closure prevention device for digestive endoscopy according to claim 3, characterized in that: The end of the elastic sheet (113) is rotatably arranged with the support plate (122); when the elastic sheet (113) is bent, the elastic sheet (113) close to the support plate (122) approaches the filling area (133), and the distance between the elastic sheet (113) and the filling area (133) is reduced.

10. The oral cavity closure prevention device for digestive endoscopy according to claim 6, characterized in that: The elastic sheet (113) is used to cooperate with the connecting baffle (131) to block the airbag (140) filled in the filling area (133), so that the airbag (140) fills the filling area (133).

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