Anti-reflux nasal feeding tube

Abstract

The utility model relates to the field of nasal feeding tubes, and discloses an anti-backflow nasal feeding tube which comprises a catheter, a feeding tube ball is fixedly arranged at one end of the catheter, an anti-backflow valve is fixedly arranged at the position, close to the feeding tube ball, in the catheter and comprises a fixing ring, circular grooves are formed in the inner walls of the two sides of the fixing ring respectively, and the circular grooves are communicated with the feeding tube ball. And cross rods are rotationally arranged in the two circular grooves, the rod bodies of the cross rods are fixedly sleeved with blocking plates, and limiting plates are fixedly arranged on the sides, close to the feeding tube ball, of the fixing rings. According to the nasal feeding tube, when the nasal feeding tube is used, liquid flows to the limiting plate from the fixed ring, the blocking plate rotates under the acting force of the liquid and flows through the anti-backflow valve, when backflow occurs, the flowing directions of the liquid are opposite, and due to the fact that the blocking plate can only rotate in one direction under the action of the limiting plate, the anti-backflow valve cannot flow, and the anti-backflow effect is achieved; in addition, the sliding plate is extruded to move by pressing the button, the sliding plate relieves limitation on the L-shaped fixing block, and the gland is fixed and opened conveniently.

Description

Technical Field

[0001] The utility model relates to the field of nasogastric feeding tubes, in particular to an anti-reflux nasogastric feeding tube. Background Art

[0002] A nasogastric tube is a tube that is inserted through the nostrils into the stomach to deliver nutrition to patients. It is mainly used to deliver nutrition and fluids to patients who cannot eat through the mouth to ensure that they get the nutrition and water they need. The nutritional fluid provided by the nasogastric tube can reduce the risk of malnutrition caused by the patient's inability to eat normally. However, there is a possibility of reflux when using a nasogastric tube, which can cause nausea or vomiting and cause discomfort to the user. Therefore, the nasogastric tube should have an anti-reflux structure.

[0003] Most existing nasogastric tubes are not designed with anti-reflux structures. When nursing staff use nasogastric tubes to deliver nutritional fluids to patients, reflux may occur, which can cause nausea or vomiting in patients and cause discomfort to patients. In addition, nasogastric tubes are usually fixed with medical tape, which may fall off. At the same time, when nasogastric tubes need to be replaced frequently, removing the tape may cause pain.

[0004] Therefore, those skilled in the art provide an anti-reflux nasogastric tube to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an anti-reflux nasogastric tube. An anti-reflux valve is designed inside the nasogastric tube. The internal blocking plate of the anti-reflux valve can only rotate in one direction under the action of the limit plate, thereby realizing one-way circulation and effectively preventing liquid reflux. At the same time, the fixing group structure controls the fixation of the pressure cover through a button, making the disassembly and fixation of the nasogastric tube more convenient.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution: an anti-reflux nasogastric feeding tube, comprising a catheter, a feeding tube bulb fixedly provided at one end of the catheter, a plug connector fixedly provided at the end of the catheter remote from the feeding tube bulb, a rubber connecting cord fixedly provided at one side of the plug connector remote from the catheter, a rubber plug fixedly provided at the other end of the rubber connecting cord, a fixing structure fixedly provided on the catheter body, and an anti-reflux valve fixedly provided inside the catheter near the feeding tube bulb.

[0007] Furthermore, the fixing structure includes a fixing belt, a Velcro is fixedly provided on the inner side of one end of the fixing belt, a Velcro is fixedly provided on the outer side of the other end of the fixing belt, a fixing seat is fixedly provided at the center of the fixing belt, and fixing earrings are respectively fixedly provided on the belt body between the fixing seat and the two Velcros.

[0008] Furthermore, a pressure cover is hingedly provided on one side of the fixing seat away from the fixing belt, and an L-shaped fixing block is fixedly provided at the center of the lower end surface of the pressure cover away from the hinge between the fixing seat and the pressure cover.

[0009] Furthermore, a sliding groove is provided inside the fixing seat away from the center of the hinged connection between the fixing seat and the pressure cover, a sliding plate is provided in the sliding sleeve inside the sliding groove, and a No. 1 spring is fixed between the sliding plate and the inner wall of the sliding groove near the hinged connection between the fixing seat and the pressure cover.

[0010] Furthermore, the slide is provided with an L-shaped groove at a hinge point between the fixed seat and the pressure cover and close to the pressure cover side, and a trapezoidal groove is provided on the slide close to the pressure cover and away from the L-shaped groove. The fixed seat is located above the trapezoidal groove and is movably sleeved with a pressure rod, and a button is fixedly provided on the pressure rod on the side away from the fixed seat. A No. 2 spring is fixedly provided between the button and the fixed seat, and the No. 2 spring is movably sleeved on the pressure rod body between the button and the fixed seat. The end of the L-shaped fixing block away from the pressure cover passes through the fixed seat and reaches the inside of the slide groove and is clamped in the L-shaped groove.

[0011] Furthermore, the anti-reflux valve includes a fixed ring, and circular grooves are respectively provided on the inner walls on both sides of the fixed ring. A cross bar is rotatably provided inside the two circular grooves. The cross bar is located inside the fixed ring and is fixedly sleeved with a blocking plate on the rod body. A limit plate is fixedly provided on the side of the fixed ring close to the feeding tube ball.

[0012] Furthermore, torsion springs are movably sleeved at both ends of the crossbar, one end of the torsion spring is fixedly arranged inside the fixing ring, and the other end of the torsion spring is fixedly arranged inside the blocking plate.

[0013] Furthermore, the fixing ring is arranged on a side away from the feeding tube ball, the limiting plate is arranged on a side close to the feeding tube ball, and the fixing ring and the blocking plate cooperate with each other.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model proposes an anti-reflux nasogastric tube. When the nasogastric tube is used, the liquid flows from the side of the fixed ring to the side of the limiting plate. The blocking plate rotates under the force of the liquid, and the anti-reflux valve circulates. When reflux occurs, the liquid flows from the side of the limiting plate to the side of the fixed ring. Because the blocking plate can only rotate in one direction under the action of the limiting plate, the anti-reflux valve cannot circulate, thereby achieving an anti-reflux effect.

[0016] 2. The utility model proposes an anti-reflux nasogastric tube. When fixing the nasogastric tube, press the button to squeeze the slide to move, and the L-shaped fixing block will be disengaged from the L-shaped groove, and the gland can be moved. After the nasogastric tube is placed, press the button to align the L-shaped groove opening with the insertion hole, cover the gland and release the button, and the gland is re-fixed. This structure makes the fixation and replacement of the nasogastric tube more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an axonometric diagram of the present utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the catheter of the present invention;

[0019] Figure 3 This is a schematic diagram of an explosion of the anti-backflow valve of the present invention;

[0020] Figure 4 This is an axonometric diagram of the anti-backflow valve of the present invention when closed;

[0021] Figure 5 It is a front cross-sectional view of the anti-backflow valve of the utility model when it is closed;

[0022] Figure 6 This is an axonometric diagram of the anti-backflow valve of the present invention during circulation;

[0023] Figure 7 This is an axonometric cross-sectional view of the anti-backflow valve of the present invention during circulation;

[0024] Figure 8 This is a structural diagram of the fixing structure of the utility model;

[0025] Figure 9 For the utility model Figure 8 A schematic diagram of the enlarged structure of part A.

[0026] Legend:

[0027] 1. Fixing structure; 101. Velcro; 102. Fixing earring; 103. Fixing strap; 104. Pressure cover; 105. Fixing seat; 106. L-shaped groove; 107. L-shaped fixing block; 108. Spring No. 1; 109. Trapezoidal groove; 110. Slide plate; 111. Slide groove; 112. Spring No. 2; 113. Pressure rod; 114. Button; 2. Catheter; 3. Plug connector; 4. Rubber plug; 5. Rubber connecting rope; 6. Feeding tube bulb; 7. Anti-reflux valve; 701. Fixing ring; 702. Circular groove; 703. Blocking plate; 704. Torsion spring; 705. Crossbar; 706. Limiting plate. DETAILED DESCRIPTION

[0028] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0029] refer to Figure 1-3 、 Figure 7 The utility model provides an embodiment of an anti-reflux nasogastric feeding tube, comprising a catheter 2, a feeding tube ball 6 fixedly provided at one end of the catheter 2, a plug connector 3 fixedly provided at the end of the catheter 2 away from the feeding tube ball 6, a rubber connecting rope 5 fixedly provided on one side of the plug connector 3 away from the catheter 2, a rubber plug 4 fixedly provided on the other end of the rubber connecting rope 5, a fixing structure 1 fixedly provided on the catheter 2 body, an anti-reflux valve 7 fixedly provided inside the catheter 2 near the feeding tube ball 6, a fixing ring 701 provided on the side away from the feeding tube ball 6, a limiting plate 706 provided on the side near the feeding tube ball 6, and the fixing ring 701 and the blocking plate 703 cooperate with each other;

[0030] Specifically, when using a nasogastric feeding tube, the feeding tube bulb 6 is placed in the patient's stomach. Then, the rubber stopper 4 fixed to the plug connector 3 by the rubber connecting rope 5 is removed, and the nutrient solution delivery device is connected to the plug connector 3. The nutrient solution flows into the patient's stomach through the catheter 2. The nasogastric feeding tube is stably fixed by providing the fixing structure 1. By designing the fixing ring 701 of the anti-reflux valve 7 on the side away from the feeding tube bulb 6 and the limiting plate 706 on the side close to the feeding tube bulb 6, the nutrient solution can flow into the patient's stomach normally. In the event of reflux, the liquid cannot flow through the anti-reflux valve 7. The fixing ring 701 and the blocking plate 703 cooperate with each other to ensure a tight seal between the two.

[0031] refer to Figure 8 The fixing structure 1 includes a fixing belt 103, a Velcro 101 is fixedly provided on the inner side of one end of the fixing belt 103, a Velcro 101 is fixedly provided on the outer side of the other end of the fixing belt 103, a fixing seat 105 is fixedly provided at the center of the fixing belt 103, and a fixing earring 102 is fixedly provided on the belt body of the fixing belt 103 between the fixing seat 105 and the two Velcros 101;

[0032] Specifically, by setting the Velcro 101 and the fixing earrings 102, the two fixing earrings 102 are put on the patient's ears, and then the two ends of the fixing belt 103 are wrapped around the back of the patient's head and fixed by the Velcro 101 to prevent the nasogastric tube from falling off during use.

[0033] refer to Figure 8-9 , a pressure cover 104 is hingedly provided on the side of the fixing seat 105 away from the fixing belt 103, and an L-shaped fixing block 107 is fixedly provided at the center of the lower end surface of the pressure cover 104 away from the center of the hinge between the fixing seat 105 and the pressure cover 104;

[0034] Specifically, the pressure cover 104 and the fixing seat 105 are hingedly connected to each other to facilitate replacement of the nasogastric tube, and the pressure cover 104 can be fixed more firmly by providing an L-shaped fixing block 107 .

[0035] refer to Figure 9A sliding groove 111 is provided in the center of the fixed seat 105 away from the hinged connection between the fixed seat 105 and the pressure cover 104. A sliding sleeve is provided inside the sliding groove 111. A spring 108 is fixed between the sliding groove 110 and the inner wall of the sliding groove 111 near the hinged connection between the fixed seat 105 and the pressure cover 104. An L-shaped groove 106 is provided on the side of the sliding groove 110 away from the hinged connection between the fixed seat 105 and the pressure cover 104 and close to the pressure cover 104. The sliding groove 110 is provided on the side close to the pressure cover 104 and away from the L-shaped groove 106. A trapezoidal groove 109 is provided, and the fixing seat 105 is located at the trapezoidal groove 109 and is movably sleeved with a pressure rod 113. A button 114 is fixedly provided on the side of the pressure rod 113 away from the fixing seat 105. A No. 2 spring 112 is fixedly provided between the button 114 and the fixing seat 105. The No. 2 spring 112 is movably sleeved on the rod body of the pressure rod 113 located between the button 114 and the fixing seat 105. The end of the L-shaped fixing block 107 away from the pressure cover 104 passes through the fixing seat 105 and passes into the interior of the slide groove 111 and is clamped in the L-shaped groove 106.

[0036] Specifically, when fixing the nasogastric tube, press the button 114, and the button 114 drives the pressure rod 113 to move in the trapezoidal groove 109 and squeeze the slide 110 to move. The slide 110 releases the restriction on the L-shaped fixing block 107, so that the pressure cover 104 can be opened. After placing the nasogastric tube on the fixing seat 105, press the button 114 to align the notch of the L-shaped groove 106 on the slide 110 with the insertion port, cover the pressure cover 104 so that the L-shaped fixing block 107 is inserted into the L-shaped groove 106, release the button 114, and the button 114 returns to its original position under the action of the No. 2 spring 112, and the unextruded slide 110 returns to its original position under the action of the No. 1 spring 108. At this time, the L-shaped fixing block 107 is stuck by the L-shaped groove 106 on the slide 110, so the pressure cover 104 fixes the nasogastric tube on the fixing seat 105, which simplifies the operation of the staff when fixing the nasogastric tube.

[0037] refer to Figure 3-7 The anti-reflux valve 7 includes a fixed ring 701. Circular grooves 702 are respectively formed on the inner walls of both sides of the fixed ring 701. A crossbar 705 is rotatably provided inside the two circular grooves 702. The crossbar 705 is located inside the fixed ring 701 and is fixedly sleeved with a blocking plate 703. A limit plate 706 is fixedly provided on the side of the fixed ring 701 close to the feeding tube ball 6. Torsion springs 704 are movably sleeved at both ends of the crossbar 705. One end of the torsion spring 704 is fixedly provided inside the fixed ring 701, and the other end of the torsion spring 704 is fixedly provided inside the blocking plate 703.

[0038] Specifically, when the nasogastric tube is used, the liquid flows from the side of the fixing ring 701 to the side of the limiting plate 706. The blocking plate 703 on the side of the fixing ring 701 is subjected to the force of the liquid. Under the action of this force, the blocking plate 703 rotates, and the anti-reflux valve 7 circulates. When reflux occurs, the blocking plate 703 on the side of the limiting plate 706 is subjected to the force of the liquid. However, the blocking plate 703 cannot rotate under the action of the limiting plate 706. At this time, the liquid force on the blocking plate 703 on the side of the fixing ring 701 disappears, and the blocking plate 703 returns to its original position under the action of the torsion spring 704. The anti-reflux valve 7 is closed, which can effectively prevent liquid reflux.

[0039] Working principle: When using a nasogastric tube, place the feeding tube ball 6 in the patient's stomach, then unplug the rubber plug 4 on the plug connector 3, connect the nutrient solution delivery device to the plug connector 3, and the nutrient solution flows into the patient's stomach through the catheter 2. When fixing the nasogastric tube, press the button 114, and the button 114 drives the pressure rod 113 to squeeze the slide plate 110 to move, so that the slide plate 110 releases the restriction on the L-shaped fixing block 107, so that the pressure cover 104 can be opened. After the nasogastric tube is placed on the fixing seat 105, press the button 114 so that the notch of the L-shaped groove 106 on the slide plate 110 is aligned with the insertion port, close the pressure cover 104 so that the L-shaped fixing block 107 is inserted into the L-shaped groove 106, release the button 114, and the slide plate 110 that is not squeezed returns to its original position under the action of the No. 1 spring 108. At this time, the L-shaped fixing block 107 is stuck by the L-shaped groove 106, so that the pressure cover 104 fixes the nasogastric tube on the fixing seat 105, simplifying the operation of the staff when fixing the nasogastric tube;

[0040] Secondly, when the nasogastric tube is used, the liquid flows from the side of the fixing ring 701 to the side of the limiting plate 706. The blocking plate 703 on the side of the fixing ring 701 is subjected to the force of the liquid. Under the action of this force, the blocking plate 703 rotates, and the anti-reflux valve 7 circulates. When reflux occurs, the blocking plate 703 on the side of the limiting plate 706 is subjected to the force of the liquid. However, the blocking plate 703 cannot rotate under the action of the limiting plate 706. At this time, the liquid force on the blocking plate 703 on the side of the fixing ring 701 disappears, and the blocking plate 703 returns to its original position under the action of the torsion spring 704. The anti-reflux valve 7 is closed, which can effectively prevent liquid reflux.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anti-reflux nasogastric tube, comprising a catheter (2), characterized in that: A feeding tube ball (6) is fixedly provided at one end of the catheter (2); a plug connector (3) is fixedly provided at one end of the catheter (2) away from the feeding tube ball (6); a rubber connecting rope (5) is fixedly provided at one side of the plug connector (3) away from the catheter (2); a rubber plug (4) is fixedly provided at the other end of the rubber connecting rope (5); The catheter (2) is fixedly sleeved with a fixing structure (1), and an anti-reflux valve (7) is fixedly provided inside the catheter (2) near the feeding tube ball (6).

2. The anti-reflux nasogastric feeding tube according to claim 1, characterized in that: The fixing structure (1) comprises a fixing belt (103), a Velcro (101) is fixedly provided on the inner side of one end of the fixing belt (103), a Velcro (101) is fixedly provided on the outer side of the other end of the fixing belt (103), a fixing seat (105) is fixedly provided at the center of the fixing belt (103), and fixing earrings (102) are fixedly provided on the belt body of the fixing belt (103) between the fixing seat (105) and the two Velcros (101); A pressure cover (104) is hingedly provided on one side of the fixing seat (105) away from the fixing belt (103); an L-shaped fixing block (107) is fixedly provided at the center of the lower end surface of the pressure cover (104) away from the fixing seat (105) and the hinged connection between the pressure cover (104); A sliding groove (111) is provided in the center of the fixed seat (105) at a side away from the hinged connection between the fixed seat (105) and the pressure cover (104); a slide plate (110) is provided in the sliding sleeve of the sliding groove (111); a spring (108) is fixedly provided between the slide plate (110) and the inner wall of the sliding groove (111) at a side close to the hinged connection between the fixed seat (105) and the pressure cover (104); The slide plate (110) is provided with an L-shaped groove (106) at a position away from the hinged connection between the fixed seat (105) and the pressure cover (104) and close to the pressure cover (104); the slide plate (110) is provided with a trapezoidal groove (109) at a position close to the pressure cover (104) and away from the L-shaped groove (106); the fixed seat (105) is provided with a pressure rod (113) movably sleeved above the trapezoidal groove (109); the pressure rod (113) is fixedly provided with a button (114) at a side away from the fixed seat (105); a second spring (112) is fixedly provided between the button (114) and the fixed seat (105); the second spring (112) is movably sleeved on the rod body of the pressure rod (113) located between the button (114) and the fixed seat (105); The end of the L-shaped fixing block (107) away from the pressure cover (104) passes through the fixing seat (105) and passes to the inside of the sliding groove (111) and is clamped and arranged in the L-shaped groove (106); The anti-reflux valve (7) comprises a fixed ring (701), and circular grooves (702) are respectively provided on the inner walls of both sides of the fixed ring (701). A crossbar (705) is rotatably provided inside the two circular grooves (702). The crossbar (705) is located inside the fixed ring (701) and is fixedly sleeved with a blocking plate (703). A limit plate (706) is fixedly provided on the side of the fixed ring (701) close to the feeding tube ball (6). Torsion springs (704) are movably sleeved on both ends of the crossbar (705), one end of the torsion spring (704) is fixedly arranged inside the fixing ring (701), and the other end of the torsion spring (704) is fixedly arranged inside the blocking plate (703); The fixing ring (701) is arranged on a side away from the feeding tube ball (6), and the limiting plate (706) is arranged on a side close to the feeding tube ball (6). The fixing ring (701) and the blocking plate (703) cooperate with each other.

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