Gastric tube fixing device and assembly

Abstract

The present invention relates to a gastric tube fixing device and assembly. The present invention provides a gastric tube fixing device. Preferably, the ear-hook type gastric tube fixing device comprises an isolation layer, a buffer layer and a contact layer. The isolation layer and the contact layer are respectively located on both sides of the buffer layer. The isolation layer and the contact layer are bent in the same direction so that a cavity for accommodating the buffer layer is formed between the isolation layer and the contact layer. The isolation layer forms a groove for accommodating the gastric tube on the side that is not in contact with the buffer layer. The contact layer forms a protrusion that fits the external ear of the human body on the side that is not in contact with the buffer layer. The buffer layer is configured to change the distance between the isolation layer and the contact layer by absorbing solution and swelling when the gastric tube is fixed. The buffer layer is made of a hydrophilic polymer material.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a gastric tube fixing device and a component. Background Art

[0002] Patients with swallowing dysfunction will use gastric tube feeding for a long time during the treatment process. The existing technology often uses adhesive tape to fix the gastric tube. This fixation method often sticks adhesive tape on the patient's face, which greatly affects the appearance and easily causes allergies in people who are prone to allergies. In addition, the long-term compression of the patient's skin by the gastric tube is likely to cause pressure sores in the compressed area.

[0003] In view of the deficiencies of the prior art, the present invention provides a gastric tube fixing device and assembly to prevent pressure sores and avoid the occurrence of allergic reactions.

[0004] In addition, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making the present invention, but due to space limitations, not all details and contents are listed in detail. However, this does not mean that the present invention does not have the characteristics of these prior arts. On the contrary, the present invention already has all the characteristics of the prior art, and the applicant reserves the right to add relevant prior art to the background technology. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a gastric tube fixing device. Preferably, the gastric tube fixing device can be an ear-hook type gastric tube fixing device. Preferably, the ear-hook type gastric tube fixing device comprises an isolation layer, a buffer layer and a contact layer. The isolation layer and the contact layer are respectively located on both sides of the buffer layer. The isolation layer and the contact layer are bent in the same direction so that a cavity for accommodating the buffer layer is formed between the isolation layer and the contact layer. The isolation layer forms a groove for accommodating the gastric tube on the side that is not in contact with the buffer layer. The contact layer forms a protrusion that fits the external ear of the human body on the side that is not in contact with the buffer layer. The buffer layer is configured to change the distance between the isolation layer and the contact layer by absorbing solution and swelling when the gastric tube is fixed. The buffer layer is made of a hydrophilic polymer material.

[0006] Preferably, when the groove is connected to the gastric tube, the contact layer adapted to the human external ear provided in the present invention can surround the auricle of the human external ear, so that the ear-hook type gastric tube fixing device is constrained by the human external ear when being pulled by the gastric tube, thereby fixing the gastric tube. The buffer layer provided in the present invention can disperse and buffer pressure, reduce friction and shear force, and reduce the risk of pressure sores, thereby preventing pressure sores while fixing the gastric tube.

[0007] According to a preferred embodiment, the hydrophilic polymer material of the buffer layer is a mixture of one or both of a natural hydrophilic polymer material and a synthetic hydrophilic polymer material. The hydrophilic polymer material can form a hydrogel in the buffer layer by contacting a solution.

[0008] Preferably, the hydrophilic polymer material can be a natural hydrophilic polymer material or a synthetic hydrophilic polymer material, or a mixture of a natural hydrophilic polymer material and a synthetic hydrophilic polymer material. The natural hydrophilic polymer material can be any one or a mixture of two or more of starch, methylcellulose, carboxymethylcellulose, hydroxypropylcellulose, agar, gum arabic, pectin, xanthan gum, carrageenan, alginic acid and hyaluronic acid, gelatin, bone glue, polyglutamic acid, polylysine, fibrin, elastin and keratin. The synthetic hydrophilic polymer material is any one or a mixture of two or more of polyacrylamide, polyacrylic acid, polyacrylate, polyvinylpyridine, polyvinylpyrrolidone, polyvinyl alcohol, polymaleic anhydride, polyquaternary ammonium salt, polyethylene glycol, and polyethylene oxide. Preferably, the proportion of hydrophilic polymer materials in the hydrogel formed by the buffer layer is at least 13%. Preferably, the thickness of the hydrogel formed by the buffer layer increases, which increases the distance between the pipe fittings and the fixture and the patient's skin, and can reduce the possibility of allergic reactions.

[0009] According to a preferred embodiment, the isolation layer is made of polyurethane material. Preferably, the polyurethane material can be prepared by low-temperature foaming process from the following components by weight: 70 parts of polyether polyol, 20 parts of polyisocyanate, 20 parts of foaming agent, 1.5 parts of catalyst, 0.5 parts of foam stabilizer, and 1.1 parts of antibacterial agent.

[0010] Preferably, in the case of a hydrogel formed by the buffer layer, the isolation layer can slow down the volatilization of water in the hydrogel, thereby extending the single use time of the ear-hanging stomach tube fixing device.

[0011] According to a preferred embodiment, the contact layer is provided with through holes in such a manner that the water in the hydrogel diffuses to the outside through the contact layer when the buffer layer forms a hydrogel. Preferably, the contact layer is provided with a plurality of through holes. Preferably, the plurality of through holes are evenly distributed on the contact layer. Preferably, in the case where the buffer layer is not in contact with the solution to form a hydrogel, the user can soak the ear-hook type gastric tube fixing device in the solution so that the solution enters the buffer layer through the through holes provided in the contact layer, thereby making the solution contact with the hydrophilic polymer material in the buffer layer to form a hydrogel. Preferably, the solution is an aqueous solution by default. In the case of using an aqueous solution to generate a hydrogel, the ear-hook type gastric tube fixing device can slowly diffuse water to the contact part with the user during use, thereby preventing the occurrence of pressure sores. Preferably, in the process of using the ear-hook type gastric tube fixing device, the water in the hydrogel in the buffer layer can be dispersed to the area between the auricle of the human body's outer ear and the side of the head through the through holes on the contact layer, thereby preventing the occurrence of pressure sores.

[0012] Preferably, for people who are prone to allergies, the hydrophilic polymer material in the buffer layer can generate a hydrogel storing anti-allergic drugs by contacting a solution in which anti-allergic drugs are dissolved. Preferably, during the use of the ear-hook type gastric tube fixing device, the hydrogel storing anti-allergic drugs can diffuse the dissolved anti-allergic drugs to the patient's skin, thereby preventing allergic reactions. Preferably, the hydrophilic polymer material in the buffer layer can generate a hydrogel storing the corresponding drugs by contacting the drug solution, and then continuously administer the drug to the skin in contact with the contact layer through the through holes on the contact layer, thereby eliminating other adverse reactions.

[0013] According to a preferred embodiment, the isolation layer, the buffer layer and the contact layer form an ear hook body. In the case of fixing the gastric tube, the ear hook body is configured to be worn by fitting into the gap between the auricle of the human body and the side of the head.

[0014] According to a preferred embodiment, the ear hook body is provided with at least two restraining bands at intervals on the groove. Preferably, a plurality of restraining bands are evenly distributed on the groove. Preferably, the restraining band can be made of an elastic material. The restraining band can limit the gastric tube based on the restoring force generated by forced deformation. Preferably, the aperture formed by the restraining band and the groove is smaller than the diameter of the gastric tube. Preferably, the restraining band is forced to deform in the process of the gastric tube entering the groove. Preferably, after the gastric tube is installed in the groove, the restraining band can limit the gastric tube based on the restoring force generated by forced deformation, so as to fix the gastric tube.

[0015] The present invention also provides a clamp-type gastric tube fixing device. The clamp-type gastric tube fixing device comprises two clamp bodies that can fit together. Preferably, the two clamp bodies that can fit together are mirror images of each other. Preferably, the clamp-type gastric tube fixing device is provided with an isolation layer, a buffer layer and a contact layer in sequence on the clamp body on the side close to the human body. The isolation layer and the contact layer are respectively arranged on both sides of the buffer layer. The isolation layer connects the clamp body and the buffer layer. The isolation layer is made of polyurethane material. The buffer layer is configured to change the distance between the isolation layer and the contact layer by absorbing solution swelling when fixing the gastric tube. The buffer layer is made of a hydrophilic polymer material. The hydrophilic polymer material of the buffer layer is a mixture of one or both of a natural hydrophilic polymer material and a synthetic hydrophilic polymer material. The hydrophilic polymer material can form a hydrogel in the buffer layer by contacting a solution. Preferably, the hydrophilic polymer material can be a natural hydrophilic polymer material or a synthetic hydrophilic polymer material, or a mixture of a natural hydrophilic polymer material and a synthetic hydrophilic polymer material. The contact layer is provided with through holes in such a manner that when the buffer layer forms a hydrogel, the water in the hydrogel diffuses to the outside through the contact layer. Preferably, the contact layer is provided with a plurality of through holes. Preferably, the plurality of through holes are evenly distributed on the contact layer. Preferably, in the case where the buffer layer is not in contact with the solution to form a hydrogel, the user can soak the ear-hook type gastric tube fixing device in the solution so that the solution enters the buffer layer through the through holes provided in the contact layer, thereby causing the solution to contact with the hydrophilic polymer material in the buffer layer to form a hydrogel.

[0016] When in contact with a solution, especially an aqueous solution, the buffer layer can form a hydrogel. Preferably, the hydrogel formed by the buffer layer can disperse and buffer the pressure applied by the clamping gastric tube fixing device to the patient's skin, reduce friction and shear force, and thus reduce the risk of pressure sores. Preferably, the thickness of the hydrogel formed by the buffer layer increases, which increases the distance between the gastric tube and the patient's skin, and can reduce the possibility of allergic reactions. In the case of the hydrogel formed by the buffer layer, the isolation layer can slow down the volatilization of water in the hydrogel, thereby extending the single use time of the clamping gastric tube fixing device. Preferably, during the use of the clamping gastric tube fixing device, the isolation layer can also prevent foreign substances from entering the buffer layer and contaminating the hydrogel. Preferably, for patients who are prone to allergic reactions, when using the clamping gastric tube fixing device, medical staff can add dissolved anti-allergic drugs to the buffer layer, and the buffer layer diffuses the dissolved anti-allergic drugs to the patient's skin, thereby avoiding allergic reactions in patients. Preferably, since the diffusion of water in the hydrogel is a slow and continuous process, the buffer layer can achieve continuous drug administration.

[0017] According to a preferred embodiment, the two clamp bodies are arranged opposite to each other, and a fitting module and a notch are respectively arranged on the opposite side. The two clamp bodies are configured to be connected into one body through the two fitting modules, and when the two fitting modules are connected, the two notches clamp the gastric tube. Preferably, the fitting module can be a magnet with opposite polarities. Preferably, the two fitting modules can be connected into one body by mutual adsorption. Preferably, when the two clamp bodies are connected into one body, the two notches can form an annular through hole with a diameter smaller than the diameter of the gastric tube. Preferably, when the two clamp bodies are mutually adsorbed by the two fitting modules to form the clamping gastric tube fixing device, the annular through hole formed by the two notches squeezes and constrains the gastric tube, thereby realizing the limitation of the gastric tube. Preferably, the clamping gastric tube fixing device can be arranged at the position of the patient's collar, and preferably, the two fitting modules can be arranged on both sides of the patient's collar. Preferably, when the clamping gastric tube fixing device is arranged at the patient's collar, the projection of the overlapping part between the clamp body and the fitting module is located within the range of the patient's collar, and the projection of the overlapping part between the clamp body and the notch is located outside the range of the patient's collar.

[0018] The present invention also provides an ear-hook type gastric tube fixing device. The ear-hook type gastric tube fixing device comprises an ear-hook body, a restraining band and a groove. The side surface of the ear-hook body comprises a plane and a curved surface, and the groove penetrating the ear-hook body is arranged on the plane. The ear-hook body is provided with at least two restraining bands on the groove in a spaced manner. The restraining band can be made of elastic material. The restraining band can restrict the gastric tube based on the restoring force generated by forced deformation. The ear-hook body comprises an isolation layer, a buffer layer and a contact layer. The isolation layer and the contact layer are respectively located on both sides of the buffer layer. The isolation layer and the contact layer are bent in the same direction, so that a cavity for accommodating the buffer layer is formed between the isolation layer and the contact layer. The isolation layer forms a groove for accommodating the gastric tube on the side not in contact with the buffer layer. The contact layer forms a protrusion adapted to the external ear on the side not in contact with the buffer layer. The buffer layer is configured to change the distance between the isolation layer and the contact layer by absorbing solution and swelling when the gastric tube is fixed. The buffer layer is made of a hydrophilic polymer material.

[0019] The present invention also provides a stomach tube fixing assembly, which comprises an ear-hanging stomach tube fixing device and a clamping stomach tube fixing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the use of an ear-hook type stomach tube fixing device according to a preferred embodiment of the present invention;

[0021] Figure 2 It is a simplified structural schematic diagram of an ear-hook type stomach tube fixing device according to a preferred embodiment of the present invention;

[0022] Figure 3 It is a simplified structural schematic diagram of an ear hook body according to a preferred embodiment of the present invention;

[0023] Figure 4 It is a simplified structural schematic diagram of another preferred embodiment of an ear-hook type stomach tube fixing device provided by the present invention;

[0024] Figure 5 is a simplified structural schematic diagram of an ear hook body according to another preferred embodiment of the present invention;

[0025] Figure 6 It is a simplified structural schematic diagram of a clamping type stomach tube fixing device according to a preferred embodiment of the present invention;

[0026] Figure 7 It is a simplified schematic diagram of a gastric tube fixing assembly according to a preferred embodiment of the present invention.

[0027] Reference numerals list

[0028] 100: gastric tube fixing assembly; 101: isolation layer; 102: buffer layer; 103: contact layer; 110: ear-hook type gastric tube fixing device; 111: ear-hook body; 112: restraint belt; 113: groove; 114: adhesion layer; 120: gastric tube; 130: clamp-type gastric tube fixing device; 131: clamp body; 132: fitting module; 133: notch. DETAILED DESCRIPTION

[0029] The following is combined with Figures 1 to 5 Provide detailed explanation.

[0030] The present invention provides a gastric tube fixing device and assembly. The fixing device is provided with an isolation layer, a buffer layer and a contact layer on the side contacting the patient's skin while fixing the gastric tube. When in contact with a solution, especially an aqueous solution, the buffer layer can form a hydrogel. Preferably, the hydrogel formed by the buffer layer can disperse and buffer the pressure applied by the fixing device to the patient's skin, reduce friction and shear force, and thus reduce the risk of pressure sores. Preferably, the thickness of the hydrogel formed by the buffer layer increases, which increases the distance between the pipe and the fixing device and the patient's skin, and can reduce the possibility of allergic reactions. In the case of the hydrogel formed by the buffer layer 102, the isolation layer can slow down the volatilization of water in the hydrogel, thereby extending the single use time of the ear-hanging gastric tube fixing device. Preferably, during the use of the fixing device, the isolation layer can also prevent foreign substances from entering the buffer layer to contaminate the hydrogel. Preferably, for patients who are prone to allergic reactions, when using the fixing device, medical staff can add dissolved anti-allergic drugs to the buffer layer, and the buffer layer diffuses the dissolved anti-allergic drugs to the patient's skin, thereby avoiding allergic reactions in patients.

[0031] Example 1

[0032] This embodiment provides a gastric tube fixing device. Figure 1 Preferably, the gastric tube fixing device can be an ear-hanging gastric tube fixing device 110.

[0033] See also Figure 2 Preferably, the isolation layer 101, the buffer layer 102 and the contact layer 103 constitute the ear hook body 111. In the case of fixing the gastric tube, the ear hook body 111 is configured to be worn by fitting the gap between the auricle of the human body and the side of the head. Preferably, the ear hook body 111 is provided with at least two restraint belts 112 on the groove 113 in an interval manner. Preferably, a plurality of restraint belts 112 are evenly distributed on the groove 113. Preferably, the restraint belt 112 is made of elastic material. The restraint belt 112 can restrict the gastric tube 120 based on the restoring force generated by the forced deformation. Preferably, the aperture formed by the restraint belt 112 and the groove 113 is smaller than the diameter of the gastric tube. Preferably, the restraint belt 112 needs to be forced to deform in the process of the gastric tube 120 entering the groove 113. Preferably, after the gastric tube 120 is installed in the groove 113, the restraint belt 112 can restrict the gastric tube 120 based on the restoring force generated by the forced deformation, so that the gastric tube can be fixed.

[0034] See also Figure 3Preferably, the ear-hook type gastric tube fixing device 110 comprises an isolation layer 101, a buffer layer 102 and a contact layer 103. The isolation layer 101 and the contact layer 103 are respectively located on both sides of the buffer layer 102. The isolation layer 101 and the contact layer 103 are bent in the same direction so that a cavity for accommodating the buffer layer 102 is formed between the isolation layer 101 and the contact layer 103. The isolation layer 101 forms a groove 113 for accommodating the gastric tube 120 on the side that is not in contact with the buffer layer 102. The contact layer 103 forms a protrusion that fits the external ear of the human body on the side that is not in contact with the buffer layer 102. The buffer layer 102 is configured to change the distance between the isolation layer 101 and the contact layer 103 by absorbing the solution to swell when the gastric tube is fixed. The buffer layer 102 is made of a hydrophilic polymer material.

[0035] See also Figure 4 and Figure 5 Preferably, the ear-hook type gastric tube fixing device 110 can also be configured with a model without a restraint belt 112. Preferably, the ear-hook type gastric tube fixing device 110 without a restraint belt 112 includes an ear-hook body 111. The ear-hook body 111 includes an isolation layer 101, a buffer layer 102 and a contact layer 103. The isolation layer 101 and the contact layer 103 are respectively located on both sides of the buffer layer 102. The isolation layer 101 and the contact layer 103 are bent in the same direction, so that a cavity for accommodating the buffer layer 102 is formed between the isolation layer 101 and the contact layer 103. And the isolation layer 101 forms a groove 113 for accommodating the gastric tube 120 on the side that does not contact the buffer layer 102. See Figure 5 Preferably, an adhesive layer 114 is provided in the groove 113. The adhesive layer 114 is provided along the isolation layer 101. Preferably, when fixing the gastric tube 120, the adhesive layer 114 can fix the gastric tube 120 by bonding the gastric tube 120. Preferably, the adhesive layer 114 can be formed by applying an emulsion-type acrylic pressure-sensitive adhesive to the isolation layer 101. The contact layer 103 forms a protrusion that adapts to the external ear on the side that does not contact the buffer layer 102. The buffer layer 102 is configured to: when fixing the gastric tube, the distance between the isolation layer 101 and the contact layer 103 is changed by absorbing the solution to swell; wherein the buffer layer 102 is made of a hydrophilic polymer material.

[0036] Preferably, when the groove 113 is connected to the gastric tube 120, the contact layer 103 adapted to the human external ear provided in the present invention can surround the auricle of the human external ear, so that the ear-hook type gastric tube fixing device 110 is constrained by the human external ear when being pulled by the gastric tube 120, thereby fixing the gastric tube. The buffer layer 102 provided in the present invention can disperse and buffer pressure, reduce friction and shear force, and reduce the risk of pressure sores, thereby preventing pressure sores while fixing the gastric tube 120.

[0037] Preferably, the hydrophilic polymer material of the buffer layer 102 is a mixture of one or both of a natural hydrophilic polymer material and a synthetic hydrophilic polymer material. The hydrophilic polymer material can form a hydrogel in the buffer layer 102 by contacting a solution.

[0038] Preferably, the hydrophilic polymer material can be a natural hydrophilic polymer material or a synthetic hydrophilic polymer material, or a mixture of a natural hydrophilic polymer material and a synthetic hydrophilic polymer material. The natural hydrophilic polymer material can be any one or a mixture of two or more of starch, methylcellulose, carboxymethylcellulose, hydroxypropylcellulose, agar, gum arabic, pectin, xanthan gum, carrageenan, alginic acid and hyaluronic acid, gelatin, bone glue, polyglutamic acid, polylysine, fibrin, elastin and keratin. The synthetic hydrophilic polymer material is any one or a mixture of two or more of polyacrylamide, polyacrylic acid, polyacrylate, polyvinylpyridine, polyvinylpyrrolidone, polyvinyl alcohol, polymaleic anhydride, polyquaternary ammonium salt, polyethylene glycol, and polyethylene oxide. Preferably, the proportion of hydrophilic polymer materials in the hydrogel formed by the buffer layer 102 is at least 13%. Preferably, the thickness of the hydrogel formed by the buffer layer 102 increases, which increases the distance between the pipe fittings and the fixture and the patient's skin, and can reduce the possibility of allergic reactions.

[0039] Preferably, the isolation layer 101 is made of polyurethane material. Preferably, the polyurethane material can be prepared by the following components by weight through a low-temperature foaming process: 70 parts of polyether polyol, 20 parts of polyisocyanate, 20 parts of foaming agent, 1.5 parts of catalyst, 0.5 parts of foam stabilizer, and 1.1 parts of antibacterial agent.

[0040] Preferably, in the case of a hydrogel formed by the buffer layer 102 , the isolation layer 101 can slow down the volatilization of water in the hydrogel, thereby extending the single use time of the ear-hook type gastric tube fixing device 110 .

[0041] Preferably, the contact layer 103 is provided with through holes in such a manner that the moisture in the hydrogel diffuses to the outside through the contact layer 103 when the buffer layer 102 forms a hydrogel. Preferably, the contact layer 103 is provided with a plurality of through holes. Preferably, the plurality of through holes are evenly distributed on the contact layer 103. Preferably, in the case where the buffer layer 102 is not in contact with the solution to form a hydrogel, the user can soak the ear-hook type gastric tube fixing device 110 in the solution so that the solution enters the buffer layer 102 through the through holes provided in the contact layer 103, thereby allowing the solution to contact the hydrophilic polymer material in the buffer layer 102 to form a hydrogel. Preferably, the solution is an aqueous solution by default. In the case of using an aqueous solution to generate a hydrogel, the ear-hook type gastric tube fixing device 110 can slowly diffuse moisture to the contact part with the user during use, thereby preventing the occurrence of pressure sores. Preferably, during use of the ear-hook stomach tube fixing device 110, moisture in the hydrogel in the buffer layer 102 can be dispersed through the through holes on the contact layer 103 to the area between the auricle of the human outer ear and the side of the head, thereby preventing the occurrence of pressure sores.

[0042] Preferably, for people who are prone to allergies, the hydrophilic polymer material in the buffer layer 102 can generate a hydrogel storing anti-allergic drugs by contacting a solution in which anti-allergic drugs are dissolved. Preferably, during the use of the ear-hook type gastric tube fixing device 110, the hydrogel storing anti-allergic drugs can diffuse the dissolved anti-allergic drugs to the patient's skin, thereby preventing allergic reactions. Preferably, the hydrophilic polymer material in the buffer layer 102 can generate a hydrogel storing the corresponding drugs by contacting the drug solution, and then continuously administer the drugs to the skin in contact with the contact layer 103 through the through holes on the contact layer 103, thereby eliminating other adverse reactions.

[0043] Example 2

[0044] This embodiment is a further improvement on Embodiment 1, and the repeated contents will not be repeated here.

[0045] This embodiment provides a clamping type stomach tube fixing device 130. Figure 6 The clamp-type gastric tube fixing device 130 includes two clamp bodies 131 that can fit together. Preferably, the two clamp bodies 131 that can fit together are mirror images of each other. Preferably, the two clamp bodies 131 are arranged opposite to each other, and a fitting module 132 and a notch 133 are respectively provided on opposite sides. The two clamp bodies 131 are configured as follows: they are connected into one body through two fitting modules 132, and when the two fitting modules 132 are connected, the two notches 133 clamp the gastric tube 120. Preferably, the clamp-type gastric tube fixing device 130 is provided with an isolation layer 101, a buffer layer 102 and a contact layer 103 in sequence on the clamp body 131 on the side close to the human body.

[0046] Preferably, the fitting module 132 can be a magnet with opposite polarities. Preferably, the two fitting modules 132 can be connected to form one body of the two clamp bodies 131 by mutual adsorption. Preferably, when the two clamp bodies 131 are connected to form one body, the two notches 133 can form an annular through hole with a diameter smaller than the diameter of the gastric tube 120. Preferably, when the two clamp bodies 131 are mutually adsorbed by the two fitting modules 132 to form a clamping type gastric tube fixing device 130, the annular through hole formed by the two notches 133 squeezes and constrains the gastric tube 120, thereby achieving the limitation of the gastric tube 120. Preferably, the clamping type gastric tube fixing device 130 can be set at the position of the patient's collar, and preferably, the two fitting modules 132 can be respectively set on both sides of the patient's collar. Preferably, when the clamping gastric tube fixing device 130 is set on the patient's collar, the projection of the overlapping part of the clamp body 131 and the fitting module 132 is located within the patient's collar range, and the projection of the overlapping part of the clamp body 131 and the notch 133 is located outside the patient's collar range.

[0047] Preferably, the clamp-type gastric tube fixing device is provided with an isolation layer 101, a buffer layer 102 and a contact layer 103 in sequence on the clamp body 131 on the side close to the human body. The isolation layer 101 and the contact layer 103 are respectively arranged on both sides of the buffer layer 102. The isolation layer 101 connects the clamp body 131 and the buffer layer 102. The isolation layer 101 is made of polyurethane material. The buffer layer 102 is configured to change the distance between the isolation layer 101 and the contact layer 103 by absorbing the solution and swelling when the gastric tube is fixed. The buffer layer 102 is made of a hydrophilic polymer material. The hydrophilic polymer material of the buffer layer 102 is a mixture of one or both of a natural hydrophilic polymer material and a synthetic hydrophilic polymer material. The hydrophilic polymer material can form a hydrogel in the buffer layer 102 by contacting the solution. Preferably, the hydrophilic polymer material can be a natural hydrophilic polymer material or a synthetic hydrophilic polymer material, or a mixture of a natural hydrophilic polymer material and a synthetic hydrophilic polymer material. The contact layer 103 is provided with through holes in such a manner that the water in the hydrogel diffuses to the outside through the contact layer 103 when the buffer layer 102 forms a hydrogel. Preferably, the contact layer 103 is provided with a plurality of through holes. Preferably, the plurality of through holes are evenly distributed on the contact layer 103. Preferably, in the case where the buffer layer 102 is not in contact with the solution to form a hydrogel, the user can soak the clamp-type gastric tube fixing device 130 in the solution so that the solution enters the buffer layer 102 through the through holes provided in the contact layer 103, thereby allowing the solution to contact the hydrophilic polymer material in the buffer layer 102 to form a hydrogel.

[0048] When in contact with a solution, especially an aqueous solution, the buffer layer 102 can form a hydrogel. Preferably, the hydrogel formed by the buffer layer 102 is sufficient to disperse and buffer the pressure applied to the patient's skin by the clamping gastric tube fixing device 130, reduce friction and shear force, and thus reduce the risk of pressure sores. Preferably, the thickness of the hydrogel formed by the buffer layer 102 increases, which increases the distance between the gastric tube 120 and the patient's skin, and can reduce the possibility of allergic reactions. In the case of the hydrogel formed by the buffer layer 102, the isolation layer 101 can slow down the volatilization of water in the hydrogel, thereby extending the single use time of the clamping gastric tube fixing device 130. Preferably, during the use of the clamping gastric tube fixing device 130, the isolation layer 101 can also prevent foreign substances from entering the buffer layer 102 to contaminate the hydrogel. Preferably, for patients who are prone to allergic reactions, when using the clamping gastric tube fixing device 130, medical staff can add dissolved anti-allergic drugs to the buffer layer 102, and the buffer layer 102 diffuses the dissolved anti-allergic drugs to the patient's skin, thereby avoiding allergic reactions in patients. Preferably, since the diffusion of water in the hydrogel is a slow and continuous process, the buffer layer 102 can achieve continuous drug delivery.

[0049] Example 3

[0050] This embodiment is a further improvement of Embodiment 1 and Embodiment 2, and the repeated contents will not be repeated here.

[0051] This embodiment provides a stomach tube fixing assembly 100. Figure 7 Preferably, the gastric tube fixing assembly 100 includes an ear-hook type gastric tube fixing device 110 and a clamp type gastric tube fixing device 130 .

[0052] See also Figure 1Preferably, the ear-hook type gastric tube fixing device 110 includes an ear-hook body 111, a restraining band 112 and a groove 113. The side of the ear-hook body 111 includes a plane and a curved surface, and a groove 113 penetrating the ear-hook body 111 is provided on the plane. The ear-hook body 111 is provided with at least two restraining bands 112 on the groove 113 in an interval manner. The restraining band 112 is made of elastic material. The restraining band 112 can limit the gastric tube 120 based on the restoring force generated by forced deformation. The ear-hook body 111 includes an isolation layer 101, a buffer layer 102 and a contact layer 103. The isolation layer 101 and the contact layer 103 are respectively located on both sides of the buffer layer 102. The isolation layer 101 and the contact layer 103 are bent in the same direction, so that a cavity for accommodating the buffer layer 102 is formed between the isolation layer 101 and the contact layer 103. The isolation layer 101 forms a groove 113 for accommodating the gastric tube 120 on the side not in contact with the buffer layer 102. The contact layer 103 forms a protrusion adapted to the external ear on the side not in contact with the buffer layer 102. The buffer layer 102 is configured to change the distance between the isolation layer 101 and the contact layer 103 by absorbing the solution and swelling when the gastric tube is fixed. The buffer layer 102 is made of a hydrophilic polymer material. Preferably, the ear-hook type gastric tube fixing device 110 in this embodiment can be the ear-hook type gastric tube fixing device 110 in Example 1.

[0053] See also Figure 6 Preferably, the clamp-type gastric tube fixing device 130 includes two clamp bodies 131 that can fit together. Preferably, the two clamp bodies 131 that can fit together are mirror images of each other. Preferably, the two clamp bodies 131 are arranged opposite to each other, and a fitting module 132 and a notch 133 are respectively provided on opposite sides. The two clamp bodies 131 are configured as follows: they are connected into one body through two fitting modules 132, and when the two fitting modules 132 are connected, the two notches 133 clamp the gastric tube 120. Preferably, the clamp-type gastric tube fixing device 130 is provided with an isolation layer 101, a buffer layer 102 and a contact layer 103 in sequence on the clamp body 131 on the side close to the human body.

[0054] Preferably, the clamping type stomach tube fixing device 130 in this embodiment may be the clamping type stomach tube fixing device 130 in Example 2.

[0055] The isolation layer 101 is made of polyurethane material. The buffer layer 102 is configured to change the distance between the isolation layer 101 and the contact layer 103 by absorbing the solution to swell when the gastric tube is fixed. The buffer layer 102 is made of a hydrophilic polymer material. The hydrophilic polymer material of the buffer layer 102 is a mixture of one or both of a natural hydrophilic polymer material and a synthetic hydrophilic polymer material. The hydrophilic polymer material can form a hydrogel in the buffer layer 102 by contacting the solution. Preferably, the hydrophilic polymer material can be a natural hydrophilic polymer material or a synthetic hydrophilic polymer material, or a mixture of a natural hydrophilic polymer material and a synthetic hydrophilic polymer material. The contact layer 103 is provided with through holes in such a way that the water in the hydrogel diffuses to the outside through the contact layer 103 when the buffer layer 102 forms a hydrogel. Preferably, the contact layer 103 is provided with a plurality of through holes. Preferably, the plurality of through holes are evenly distributed on the contact layer 103. Preferably, when the buffer layer 102 is not in contact with the solution to form a hydrogel, the user can immerse the ear-hanging gastric tube fixing device 110 and / or the clamping gastric tube fixing device 130 in the solution so that the solution enters the buffer layer 102 through the through holes provided in the contact layer 103, thereby allowing the solution to contact the hydrophilic polymer material in the buffer layer 102 to form a hydrogel.

[0056] When in contact with a solution, especially an aqueous solution, the buffer layer 102 can form a hydrogel. Preferably, the hydrogel formed by the buffer layer 102 is sufficient to disperse and buffer the pressure applied to the patient's skin by the ear-hook gastric tube fixing device 110 and / or the clamping gastric tube fixing device 130, reduce friction and shear force, and thus reduce the risk of pressure sores. Preferably, the thickness of the hydrogel formed by the buffer layer 102 increases, which increases the distance between the gastric tube 120 and the patient's skin, and can reduce the possibility of allergic reactions. In the case of the hydrogel formed by the buffer layer 102, the isolation layer 101 can slow down the volatilization of water in the hydrogel, thereby extending the single use time of the ear-hook gastric tube fixing device 110 and / or the clamping gastric tube fixing device 130. Preferably, during the use of the ear-hook gastric tube fixing device 110 and / or the clamping gastric tube fixing device 130, the isolation layer 101 can also prevent foreign substances from entering the buffer layer 102 and contaminating the hydrogel. Preferably, for patients who are prone to allergic reactions, when using the ear-hook type gastric tube fixing device 110 and / or the clamp type gastric tube fixing device 130, medical personnel can add dissolved anti-allergic drugs to the buffer layer 102, and the buffer layer 102 diffuses the dissolved anti-allergic drugs to the patient's skin, thereby preventing the patient from having an allergic reaction. Preferably, since the diffusion of water in the hydrogel is a slow and continuous process, the buffer layer 102 can achieve continuous drug administration.

[0057] A preferred embodiment is provided. In this embodiment, the fixing device further includes a variable connection cavity, and at least a part of the side wall of the variable connection cavity is surrounded and wrapped by the fixture body 131. The variable connection cavity is constructed as a structure that can at least change its chamber volume. A typical example is a spherical or olive-shaped chamber structure constructed of elastic material. The variable connection cavity has at least two opening channels connected to its internal cavity, and the two opening channels are respectively coupled to the upstream and downstream ports of the pipeline to form a pipeline path for circulation. When the inside of the variable connection cavity is in an empty state, that is, when the variable connection cavity is in a natural elastic state, the volume of the variable connection cavity at this time is called the first volume; when the variable connection cavity is filled with a filler of a volume that meets the first volume and continues to be filled so that the variable connection cavity itself is deformed to expand to a volume greater than the first volume, the parameter greater than the first volume is called the second volume. It can be understood that when the variable connection cavity is in the second volume, its external volume increases, that is, it expands. In this case, the two open channels of the variable connection chamber are divided into an upstream channel and a downstream channel according to the position of the coupled pipes in the streamline, wherein the downstream channel is constructed to be at least able to be opened when the variable connection chamber is filled with fillers and changed from the first volume to the second volume so that the fillers can be discharged through the downstream channel so that the variable connection chamber is deformed from the second volume to the first volume. According to the use scenario of the present device, the filler is usually a substance with fluid properties, such as a nutrient solution for feeding patients, etc. The above-mentioned scheme of selectively opening the downstream channel under certain conditions can be realized based on the association between the changing pressure generated by the variable connection chamber at the interface of the downstream channel and the opening pressure selected when the downstream channel is constructed. A typical example is that the downstream channel is configured as a valve that can be automatically opened based on a certain pressure, such as a duckbill valve, and the opening pressure of the downstream channel is configured to be at least greater than the pressure generated at the interface of the downstream channel when the first volume of the variable connection chamber is filled. Furthermore, the downstream channel can also be configured as a structure that can be closed slowly, for example, some valve structures with prefabricated stress are selected, so that after the downstream channel is opened, the variable connection chamber can slowly reduce from the second volume to the first volume. When the variable connection chamber is in the second volume, the first pressure of the variable connection chamber in contact with the skin increases, so that the contact layer 103 reduces its own second pressure on the patient's skin due to the variable connection chamber sinking deeper into the patient's skin.

[0058] The clamping type gastric tube fixing device 130 set up as above can realize the use of certain events that regularly occur in the patient's life that use the drainage tube to regularly massage the part of the tube clamp that contacts the patient's skin with pressure changes, so as to prevent and treat the patient's pressure sores without introducing any other external power source. For example, when the medical staff injects nutrient solution into the patient's gastric tube, the variable connecting cavity is filled with the filler and the volume increases. The setting of the downstream channel ensures that the variable connecting cavity can expand to make its pressure on the patient's skin have a significant change. This significant change indicates that the variable connecting cavity changes from only slightly contacting the patient's skin to pressing the patient's skin. In this case, due to the different flow rates and flow rates of the filler entering the variable connecting cavity, the downstream channel set up at the same time enables the variable connecting cavity to slowly reduce the volume, so that the pressure on the patient's skin at the contact part with the variable connecting cavity and the center of gravity of the clamping type gastric tube fixing device 130 are constantly changing, thereby forming a massage effect. The above scheme does not introduce any external power source, but only relies on the filler passing through the pipe connected to the patient as power. As a recycling of the necessary materials involved in the process, this scheme actually achieves the effect of simple structure, lightweight, and almost zero energy consumption. However, it should be noted that the additional power equipment set up to achieve variable pressure at the tube clamp, such as motors, inflatable equipment, etc., will further increase the pressure of the tube clamp on the patient's skin, which may be counterproductive. However, this scheme achieves the prevention and treatment of patient pressure sores on the basis of minimal and simple addition, and the cost can also be better guaranteed.

[0059] It should be noted that the above-mentioned specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the present invention, and these solutions also belong to the disclosure scope of the present invention and fall within the protection scope of the present invention. Those skilled in the art should understand that the present invention specification and its drawings are illustrative and do not constitute a limitation on the claims. The scope of protection of the present invention is defined by the claims and their equivalents. Throughout the text, the features guided by "preferably" are only an optional method and should not be understood as being required. Therefore, the applicant reserves the right to abandon or delete the relevant preferred features at any time. The present invention specification contains multiple inventive concepts, such as "preferably", "according to a preferred embodiment" or "optionally", all of which indicate that the corresponding paragraph discloses an independent concept, and the applicant reserves the right to file a divisional application based on each inventive concept.

Claims

1. A gastric tube fixing device, comprising an isolation layer (101), a buffer layer (102) and a contact layer (103); in, The isolation layer (101) and the contact layer (103) are respectively located on both sides of the buffer layer (102), wherein: The isolation layer (101) and the contact layer (103) are bent in the same direction, so that a cavity for accommodating the buffer layer (102) is formed between the isolation layer (101) and the contact layer (103); and the isolation layer (101) forms a groove (113) for accommodating the gastric tube (120) on the side not in contact with the buffer layer (102); and the contact layer (103) forms a protrusion for adapting to the external ear on the side not in contact with the buffer layer (102); The buffer layer (102) is characterized in that: when the gastric tube is fixed, the distance between the isolation layer (101) and the contact layer (103) is changed by swelling by absorbing the solution; Wherein, the buffer layer (102) is made of a hydrophilic polymer material.

2. The gastric tube fixing device according to claim 1, characterized in that: The hydrophilic polymer material of the buffer layer (102) is a mixture of one or both of a natural hydrophilic polymer material and a synthetic hydrophilic polymer material, wherein: The hydrophilic polymer material can cause the buffer layer (102) to form a hydrogel by contacting a solution.

3. The stomach tube fixing device according to claim 1 or 2, characterized in that: The isolation layer (101) is made of polyurethane material, wherein the polyurethane material can be prepared from the following components in parts by weight through a low-temperature foaming process: 90 parts of polyether polyol, 30 parts of polyisocyanate, 30 parts of foaming agent, 1 part of catalyst, 0.5 parts of foam stabilizer, and 1.3 parts of antibacterial agent.

4. The stomach tube fixing device according to claim 3, characterized in that: The contact layer (103) is provided with through holes in such a manner that, when the buffer layer (102) forms a hydrogel, water in the hydrogel diffuses to the outside through the contact layer (103).

5. The stomach tube fixing device according to claim 4, characterized in that: The isolation layer (101), the buffer layer (102) and the contact layer (103) constitute an ear hook body (111). When the gastric tube is fixed, the ear hook body (111) is configured to be worn by fitting into the gap between the auricle of the human body and the side of the head.

6. The stomach tube fixing device according to claim 5, characterized in that: The ear hook body (111) is provided with at least two restraining belts (112) at intervals on the groove (113), wherein the restraining belts (112) are made of elastic material, and the restraining belts (112) can limit the gastric tube (120) based on the restoring force generated by forced deformation.

7. A clamping type stomach tube fixing device (130), characterized in that: The clamping type stomach tube fixing device (130) comprises two clamp bodies (131) that can fit together, wherein an isolation layer (101), a buffer layer (102) and a contact layer (103) are sequentially arranged on the clamp body (131) on the side of the clamping type stomach tube fixing device (130) close to the human body; The buffer layer (102) is configured to change the distance between the isolation layer (101) and the contact layer (103) by absorbing the solution and swelling when the stomach tube is fixed; Wherein, the buffer layer (102) is made of a hydrophilic polymer material; The two clamp bodies (131) are arranged opposite to each other, and are provided with a fitting module (132) and a notch (133) on opposite sides respectively; The two clamp bodies (131) are configured to be connected into one body through the two fitting modules (132), and when the two fitting modules (132) are connected, the two notches (133) clamp the gastric tube (120).

8. An ear-hook type gastric tube fixing device (110), characterized in that: The ear-hook type stomach tube fixing device (110) comprises an ear-hook main body (111); the ear-hook main body (111) comprises an isolation layer (101), a buffer layer (102) and a contact layer (103); The isolation layer (101) and the contact layer (103) are respectively located on two sides of the buffer layer (102); The isolation layer (101) and the contact layer (103) are bent in the same direction, so that a cavity for accommodating the buffer layer (102) is formed between the isolation layer (101) and the contact layer (103), and a groove (113) for accommodating the gastric tube (120) is formed on the side of the isolation layer (101) that is not in contact with the buffer layer (102); Wherein, an adhesive layer (114) is provided in the groove (113) for fixing the gastric tube (120) by bonding; The contact layer (103) forms a protrusion adapted to the external ear on the side not in contact with the buffer layer (102); the buffer layer (102) is configured to change the distance between the isolation layer (101) and the contact layer (103) by absorbing solution and swelling when the gastric tube is fixed; Wherein, the buffer layer (102) is made of a hydrophilic polymer material.

9. An ear-hook type gastric tube fixing device (110), characterized in that: The ear-hook type stomach tube fixing device (110) comprises an ear-hook body (111), a restraining belt (112) and a groove (113); The side surface of the ear hook body (111) comprises a plane and a curved surface, and the groove (113) penetrating the ear hook body (111) is arranged on the plane; The ear hook body (111) is provided with at least two restraining belts (112) at intervals on the groove (113), wherein the restraining belts (112) are made of elastic material, and the restraining belts (112) can restrict the gastric tube (120) based on the restoring force generated by the forced deformation; Wherein, the ear hook body (111) comprises an isolation layer (101), a buffer layer (102) and a contact layer (103); The isolation layer (101) and the contact layer (103) are respectively located on both sides of the buffer layer (102), wherein: The isolation layer (101) and the contact layer (103) are bent in the same direction, so that a cavity for accommodating the buffer layer (102) is formed between the isolation layer (101) and the contact layer (103); and the isolation layer (101) forms the groove (113) for accommodating the gastric tube (120) on the side not in contact with the buffer layer (102); and the contact layer (103) forms a protrusion for adapting to the external ear on the side not in contact with the buffer layer (102); The buffer layer (102) is configured to change the distance between the isolation layer (101) and the contact layer (103) by absorbing solution and swelling when the gastric tube is fixed; wherein the buffer layer (102) is made of a hydrophilic polymer material.

10. A gastric tube fixing assembly (100), characterized in that: The stomach tube fixing assembly (100) comprises the stomach tube fixing device according to any one of claims 1 to 5 and the clamping stomach tube fixing device (130) according to claim 7.

Images