CN213466061U

CN213466061U - Nasogastric tube guiding tool and nasogastric tube

Info

Publication number: CN213466061U
Application number: CN202020190853.7U
Authority: CN
Inventors: 胡国民; 徐阳
Original assignee: Suzhou Highwire Medical Devices Co ltd
Current assignee: Suzhou Highwire Medical Devices Co ltd
Priority date: 2020-02-20
Filing date: 2020-02-20
Publication date: 2021-06-18
Anticipated expiration: 2030-02-20

Abstract

The utility model discloses a nasogastric tube guiding means and nasogastric tube, wherein nasogastric tube guiding means, including handle and setting up at the handheld seal wire, the front end of seal wire is provided with the end, the surface cladding thermoplastic polyurethane elastomer rubber layer of seal wire, the surface coating on thermoplastic polyurethane elastomer rubber layer has the hydrophilic coating that extends the certain distance by its front end rear end. According to the scheme, the thermoplastic polyurethane elastomer rubber layer is coated outside the guide wire, so that the rigidity of the guide wire can be effectively improved, and meanwhile, the thermoplastic polyurethane elastomer rubber layer can effectively meet the biocompatibility required by medical instruments; the guide wire is conveniently coated in a thermal shrinkage mode, so that the processing is convenient, the subsequent hydrophilic coating is conveniently coated, and the binding force between the coating and the guide wire is improved; the hydrophilic coating is combined, so that the friction coefficient of the product material can be reduced by 98-100% when the guide wire is used, the lubricity of the guide wire is greatly improved, and the smoothness of plugging and unplugging is ensured.

Description

Nasogastric tube guiding tool and nasogastric tube

Technical Field

The utility model belongs to the technical field of medical material and specifically relates to nasogastric tube guiding tool and nasogastric tube.

Background

The nasogastric tube is used for medical instruments which are commonly used by patients with swallowing difficulty, chewing difficulty, consciousness disorder or coma, poor eating ability of old people, high catabolism, serious infection, operation, trauma and large-area burn, chronic consumptive diseases, tuberculosis, tumor and the like, have the intact gastrointestinal function, and play a role in conveying nutrient solution by being inserted into the nasal cavity of the patient to the gastrointestinal part.

Because nasogastric tube adopts macromolecular material to make, relatively softer, when using, be equipped with the nasogastric tube seal wire usually, play the supporting role, still can twitch the seal wire when washing the pipe wall simultaneously, play the residue of keeping in on the clearance pipe wall.

The conventional nasogastric tube guide wire, as shown in fig. 1, comprises a handle 01 and a guide wire 02, and the surface of the guide wire has a high friction coefficient, so that the friction between the guide wire and the inner wall of the nasogastric tube is relatively large, which is not beneficial to the insertion and extraction of the guide wire. Meanwhile, the conventional nasogastric tube guide wire has relatively poor rigidity although having better softness.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems in the prior art and providing a nasogastric tube guiding tool and a nasogastric tube.

The purpose of the utility model is realized through the following technical scheme:

the nasogastric tube guiding tool comprises a handle and a guide wire arranged on the handle, wherein the front end of the guide wire is provided with an end head, the surface of the guide wire is coated with a thermoplastic polyurethane elastomer rubber layer, and the outer surface of the thermoplastic polyurethane elastomer rubber layer is coated with a hydrophilic coating which extends from the front end to the rear end for a certain distance.

Preferably, in the nasogastric tube guiding tool, a screw hole with a diameter matched with the diameter of the rear end of the guide wire is formed in the handle, and an external thread matched with the screw hole is formed on the outer surface of the rear end of the guide wire.

Preferably, in the nasogastric tube guiding tool, a limiting groove is formed on the handle, and a hanging tag is arranged at the limiting groove through a hanging ring.

Preferably, in the nasogastric tube guiding tool, the hanging ring is an elastic ring, and the hanging tag is a erasable board and has a lock catch thereon.

Preferably, in the nasogastric tube guiding tool, the surface of the thermoplastic polyurethane elastomer rubber layer is provided with bristles extending to the outside of the hydrophilic coating.

Preferably, in the nasogastric tube guiding tool, the tip has a hemispherical front end.

Preferably, in the nasogastric tube guiding tool, a notch is formed on the hydrophilic coating, and an acid-base indicator coated on the thermoplastic polyurethane elastomer rubber layer is arranged at the notch.

Preferably, in the nasogastric tube guiding tool, the acid-base indicator covers under the layer of edible gelatin.

Preferably, in the nasogastric tube guiding tool, the surface of the thermoplastic polyurethane elastomer rubber layer is provided with graduation lines with different colors at the position which is not more than 35cm from the front end.

A nasogastric tube comprising a nasogastric tube guiding means as described in any one of the above.

The utility model discloses technical scheme's advantage mainly embodies:

according to the scheme, the thermoplastic polyurethane elastomer rubber layer with high tension, high tensile force, high toughness and aging resistance is coated outside the guide wire, so that the rigidity of the guide wire can be effectively improved to meet the rigidity requirement of the nasogastric tube guide wire, and meanwhile, the thermoplastic polyurethane elastomer rubber layer can effectively meet the biocompatibility required by medical equipment; the guide wire is conveniently coated in a thermal shrinkage mode, so that the processing is convenient, the subsequent hydrophilic coating is conveniently coated, and the binding force between the coating and the guide wire is improved; the hydrophilic coating is combined, so that the friction coefficient of the product material can be reduced by 98-100% when the guide wire is used, the lubricity of the guide wire is greatly improved, and the smoothness of plugging and unplugging is ensured.

This scheme makes handle and seal wire adopt the spiro union structure, adopts detachably mode can use through a handle and a plurality of seal wire cooperation effectively, can effectively reduce the waste of handle, increases operation rate.

The user's identity can be marked effectively to this scheme adoption drop to can be for accurately used repeatedly seal wire facilitates, guarantee the validity of using.

The bristles arranged outside the rubber layer can further create conditions for cleaning the tube wall of the nasogastric tube and improve the cleaning effect.

The arrangement of the acid-base indicator can provide convenience for accurately determining the extending position of the guide wire, and the edible gelatin is used for covering, so that the acid-base indicator can be effectively protected to a certain extent, and the phenomenon that the acid-base indicator changes color and loses efficacy before entering the stomach is avoided, and misjudgment is caused.

The scale marks with different colors are arranged on the surface of the thermoplastic polyurethane elastomer rubber layer, so that on one hand, the extending length can be effectively indicated, on the other hand, the contact between the pigment and a human body can be effectively prevented, and the friendliness of the instrument is improved.

Drawings

FIG. 1 is a prior art description of the background of the invention;

fig. 2 is a schematic view of a first embodiment of the present invention;

fig. 3 is a schematic view of a second embodiment of the present invention;

fig. 4 is a schematic view of a third embodiment of the present invention;

fig. 5 is a schematic view of a fourth embodiment of the present invention;

fig. 6 is an enlarged view of the area a in fig. 4.

Detailed Description

Objects, advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are merely exemplary embodiments for applying the technical solutions of the present invention, and all technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the scope of the present invention.

In the description of the embodiments, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the embodiment, the operator is used as a reference, and the direction close to the operator is a proximal end, and the direction away from the operator is a distal end.

The nasogastric tube guiding tool disclosed in the present invention is explained with reference to the attached drawings, as shown in fig. 2, which includes a handle 1 and a guide wire 2 disposed on the handle 1.

The handle 1 may be of the shape and material as shown in fig. 1, for example, it may be of metal or plastic, and preferably, as shown in fig. 2, the handle 1 has a first tapered section 13 and a second tapered section 14 integrally formed, and the small end of the first tapered section 13 is larger than the large end of the second tapered section 14. Of course, the handle may also be a frustum, and may be a truncated cone, or a polygonal frustum. In addition, a plurality of grooves (not shown) with equal intervals are formed on the surface of the first frustum section 13, so that the friction force can be increased conveniently when a user holds the frustum section by hand.

The guidewire 2 may be of materials known for use in various guidewire products, such as stainless steel, nitinol, a combination of stainless steel and nitinol, etc., and may have the shape of conventional various guidewires, such as may have a shaping section, a transition section, a support section, a push rod, etc.

Generally, the guide wire 2 is disposable, and the handle 1 does not extend into a human body in the using process, so that the guide wire can be reused, while the guide wire and the handle 1 are generally integrated, and the handle 1 is discarded after waste gas of the guide wire, so that the waste of materials is caused; therefore, in order to save materials and facilitate disassembly and assembly, as shown in fig. 3, a screw hole 11 with a diameter matched with the diameter of the rear end of the guide wire 2 is formed on the handle 1, an external thread 21 matched with the screw hole 11 is formed on the outer surface of the rear end of the guide wire 2, and the handle 1 can be matched with a plurality of guide wires 2 for use in a threaded manner, so that the utilization rate of the handle 1 is improved.

Further, as shown in fig. 2, a thermoplastic polyurethane elastomer rubber layer 3 is coated on the surface of the guide wire 2, the front end of the thermoplastic polyurethane elastomer rubber layer 3 is sealed, and the outer surface of the thermoplastic polyurethane elastomer rubber layer 3 is coated with a hydrophilic coating 4 extending from the front end to the rear end thereof for a certain distance.

During specific processing, the guide wire 2 can penetrate through a non-heat-shrinkable thermoplastic polyurethane elastomer rubber tube, then the thermoplastic polyurethane elastomer rubber tube is heated by heating equipment to shrink so as to be coated outside the guide wire 2 to form the thermoplastic polyurethane elastomer rubber layer 3, and in order to ensure smoothness during subsequent use, the front end of the thermoplastic polyurethane elastomer rubber layer 3 is hemispherical, so that resistance can be reduced during insertion.

The hydrophilic coating 4 may cover only a part of the front end of the heat-shrinkable polyurethane elastomer rubber layer 3, or may cover the entire outer surface of the heat-shrinkable polyurethane elastomer rubber layer 3, and the hydrophilic coating 4 may be any known medical hydrophilic coating 4, which is the prior art and is not described herein again.

In the use process of the nasogastric tube, the tube wall of the nasogastric tube can be cleaned by drawing the guide wire, so as to improve the cleaning effect, as shown in fig. 4, bristles 7 extending to the outside of the hydrophilic coating 4 are arranged on the surface of the thermoplastic polyurethane elastomer rubber layer 3, the bristles 7 can be made of materials similar to bristles of a toothbrush, and the bristles 7 are preferably spirally distributed on the periphery of the thermoplastic polyurethane elastomer rubber layer 3, so that the bristles 7 can ensure the position of the guide wire in the nasogastric tube to a certain extent; in actual processing, the bristles 7 may be adhered to the surface of the heat-shrinkable polyurethane elastomer rubber layer 3 by glue or the like after the heat-shrinkable polyurethane elastomer rubber layer 3 is heat-shrunk and molded, and then the hydrophilic coating 4 is coated.

In order to fully exert the efficacy of the brush hair 7, in some special cases, the nasogastric tube guide wire can be cleaned or effectively stored for reuse, so that the guide wire used before is needed to be used by the same patient, in view of this, as shown in fig. 5, a limiting groove 12 is preferably formed on the handle 1, the limiting groove 12 is preferably arranged on the second cone section 14, the limiting groove 12 is provided with the erasable board tag 6 through the hanging ring 5, in addition, the hanging ring 5 is preferably an elastic rubber ring or an elastic ring similar to a rubber band, and the erasable board tag 6 is provided with a lock catch, which further facilitates the detachable use. Therefore, after the guide wires 2 are used, identity information of the patient, such as name, admission number, bed number and the like, is filled in the erasable hanging tag 6, then the hanging ring 5 is sleeved in the limiting groove 12, and then the erasable hanging tag 6 is buckled on the hanging ring, so that the previous user of each guide wire can be accurately determined during subsequent reuse, and misuse is avoided. The erasable board tag 6 can also be used for conveniently wiping and updating information, and meanwhile, the erasable board tag 6 is placed on the handle 1 and can be conveniently reused.

Further, during the use process, the guide wire may not enter the stomach of the patient accurately due to the misoperation of the operator, however, the operator often cannot determine whether the guide wire 2 enters the stomach accurately, which increases the identification difficulty, so as to confirm the corresponding information, as shown in fig. 6, a notch 41 is formed on the hydrophilic coating 4, the notch 41 is located at the front end of the guide wire 2, and an acid-base indicator 8 coated on the thermoplastic polyurethane elastomer rubber layer 3 is arranged at the notch 41. Therefore, when the front end of the guide wire 2 enters different positions in the human body, whether the position where the guide wire extends into the stomach can be judged by combining the color of the taken-out acid-base indicator 8 with the color chart.

In addition, in order to avoid that the color of the guide wire cannot be changed after entering the stomach due to the fact that other liquid is stained in advance in the process of inserting the guide wire, as shown in fig. 6, the acid-base indicator 8 is preferably covered under the edible gelatin layer 9, so that the risk of the acid-base indicator 8 changing color in advance can be reduced by dissolving the edible gelatin 9 in the process of inserting the guide wire 2, and the edible gelatin 9 can be quickly dissolved to change the color of the acid-base indicator 8 after entering the stomach.

Further, in the using process of the nasogastric tube, the length (generally between 45-55 cm) of the nasogastric tube entering the human body needs to be determined, scales or different colors are formed on the closed nasogastric tube to mark in a conventional indicating method, but the scales exist, the roughness of the surface of the nasogastric tube is increased, the friction force during entering and exiting is increased, the colors easily bring external chemical substances to a patient on the surface of the nasogastric tube and are not beneficial to biological friendliness, therefore, scales (not shown in the figure) with different colors are preferably formed on the position, away from the front end of the surface of the thermoplastic polyurethane elastomer rubber layer 3, of which the distance is not more than 35cm, of the surface of the thermoplastic polyurethane elastomer rubber layer, the scales are arranged in the nasogastric tube, in addition, transparent lubricating gel is formed on the hydrophilic coating, so that the scales can be effectively and accurately identified, on the other hand, colored scales can be covered, the pigment can not directly contact with human body, thus chemical substances brought in can be reduced to a minimum extent, and the use safety is ensured.

The scheme further discloses a nasogastric tube, which comprises the nasogastric tube guiding tool of the embodiment and further comprises a nasogastric tube main body, wherein the nasogastric tube main body can be various known nasogastric tubes, and the nasogastric tube main body is known in the prior art and is not described in detail herein.

The utility model has a plurality of implementation modes, and all technical schemes formed by adopting equivalent transformation or equivalent transformation all fall within the protection scope of the utility model.

Claims

1. Nasogastric tube guiding tool, its characterized in that: the novel guide wire structure comprises a handle (1) and a guide wire (2) arranged on the handle (1), wherein the surface of the guide wire (2) is coated with a thermoplastic polyurethane elastomer rubber layer (3), the front end of the thermoplastic polyurethane elastomer rubber layer (3) is hemispherical, and the outer surface of the thermoplastic polyurethane elastomer rubber layer (3) is coated with a hydrophilic coating (4) which extends from the front end to the rear end for a certain distance.

2. The nasogastric tube guidance tool of claim 1, wherein: the handle (1) is provided with a screw hole (11) with the diameter matched with that of the rear end of the guide wire (2), and the outer surface of the rear end of the guide wire (2) is provided with an external thread (21) matched with the screw hole (11).

3. The nasogastric tube guidance tool of claim 1, wherein: a limiting groove (12) is formed in the handle (1), and a hanging tag (6) is arranged at the limiting groove (12) through a hanging ring (5).

4. The nasogastric tube guidance tool of claim 3, wherein: the hanging ring is an elastic ring, and the hanging tag is an erasable board and is provided with a lock catch.

5. The nasogastric tube guidance tool of claim 1, wherein: the surface of the thermoplastic polyurethane elastomer rubber layer (3) is provided with bristles (7) extending to the outside of the hydrophilic coating (4).

6. The nasogastric tube guidance tool of claim 1, wherein: a notch (41) is formed on the hydrophilic coating (4), and an acid-base indicator (8) coated on the thermoplastic polyurethane elastomer rubber layer (3) is arranged at the notch (41).

7. The nasogastric tube guidance tool of claim 6, wherein: the acid-base indicator (8) is covered under the edible gelatin layer (9).

8. The nasogastric tube guiding tool of any one of claims 1-7, wherein: the surface of the thermoplastic polyurethane elastomer rubber layer (3) is provided with graduation lines (10) with different colors at the position which is not more than 35cm from the front end.

9. Nasogastric tube, its characterized in that: comprising a nasogastric tube guiding means according to any one of claims 1-8.