CN211797763U - Nutrient tube subassembly - Google Patents

Abstract

The utility model discloses a nutrition tube assembly. Specifically, the feeding tube assembly comprises: a primary catheter, a replacement catheter, a guidewire, and a primary catheter closure; the primary catheter comprises a first lumen, the replacement catheter comprises a second lumen, and the diameter of the first lumen and the diameter of the second lumen are both larger than the diameter of the guide wire; the original catheter closing piece is used for shielding the in-vivo port of the first inner cavity, and when the original catheter is placed in a body, the original catheter closing piece can be digested in an intestinal tract to expose the in-vivo port of the first inner cavity, so that the guide wire can penetrate out of the in-vivo port. The utility model provides a nutrition tube subassembly, through setting up former pipe closure, the replacement of pipe that can be simple and convenient reduces medical personnel's technical requirement, alleviates sick and wounded's misery.

Description

Nutrient tube subassembly

Technical Field

The utility model relates to the field of medical equipment, especially indicate a nutrition tube subassembly.

Background

When a body suffers from severe trauma or shock, in order to protect important organs such as heart and brain to a certain extent, the whole body blood is redistributed, so that the blood flow of the gastrointestinal tract is obviously reduced, and therefore the gastrointestinal tract can generate ischemia and hypoxia at the earliest time. The early enteral nutrition support can play a certain role in protecting gastrointestinal mucosa, can meet the requirement of organism metabolism of critically ill patients in subsequent treatment, and generally adopts a nutrition tube to enter the stomach, the duodenum and the jejunum sequentially through the nasal cavity and the esophagus for conveying the nutrient solution for critically ill patients who cannot take food through the mouth. In this process, two gateways are needed to pass, namely: the cardia and the pylorus are positioned at the interface of the esophagus and the stomach, and the nutrient canal has certain difficulty in passing through the cardia under the condition that a patient has no swallowing capacity; the pylorus, located at the interface of the stomach and duodenum, is the narrowest part of the digestive tract, about 1.5cm in diameter, where the feeding tube is easily obstructed, and thus, is difficult to operate.

In the nutrition tube live time, often reduce the live time of nutrition tube because of liquid outlet hole blocks up, increase the change number of times of nutrition tube, compare the first operation, the operation degree of difficulty of changing nutrition tube is bigger, still can increase sick and wounded's misery in addition.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a new nutrition tube subassembly solves the technical problem that the nutrition tube is difficult to change among the prior art.

Based on above-mentioned purpose the utility model provides a pair of nutrition tube subassembly includes:

a primary catheter, a replacement catheter, a guidewire, and a primary catheter closure;

the primary catheter comprises a first lumen, the replacement catheter comprises a second lumen, and the diameter of the first lumen and the diameter of the second lumen are both larger than the diameter of the guide wire;

the original catheter closing piece is used for shielding the in-vivo port of the first inner cavity, and when the original catheter is placed in a body, the original catheter closing piece can be digested in an intestinal tract to expose the in-vivo port of the first inner cavity, so that the guide wire can penetrate out of the in-vivo port.

Furthermore, the inlet end of the original conduit is connected with the original conduit closing piece through screw connection or insertion connection.

Further, the guidewire has a length greater than twice a length of the replacement catheter.

Further, the guide wire comprises a main guide wire and an extension guide wire, and the extension guide wire is detachably connected with the main guide wire.

Further, the main guide wire comprises a main connecting part, the extension guide wire comprises an extension connecting part, and the main connecting part and the extension connecting part are detachably connected.

Further, still include the cramp, main connecting portion with extend connecting portion and all be the semicircle ball, the cramp includes the hemisphere shell of two mutual locks, be provided with the through-hole on the hemisphere shell, be used for main seal wire with extend the seal wire and pass.

Further, the main connecting portion is a first spiral structure, the extending connecting portion is a second spiral structure, and the first spiral structure and the second spiral structure are matched with each other to achieve connection.

Furthermore, the utility model also comprises a cutting knife which is detachably arranged on the guide wire and used for cutting the original catheter when the original catheter is pulled out along the guide wire.

Furthermore, a round ball is arranged at the end of the inlet body of the guide wire.

Further, the original catheter closure comprises a spherical crown surface.

As can be seen from the above, the feeding tube assembly provided by the embodiments of the present invention includes an original catheter, a replacement catheter, a guide wire and an original catheter closing member, wherein the diameters of the original catheter and the replacement catheter are both larger than the diameter of the guide wire, so that the guide wire can extend into the original catheter and the replacement catheter and can move relatively; utilize former pipe closing member shelters from the internal port of former pipe, and former pipe closing member can be digested in the intestinal and expose internal port makes the seal wire can wear out internal port, when needs are changed when former pipe, the seal wire is worn out internal port can realize taking out former pipe and keep somewhere in sick and wounded's is internal the seal wire makes the replacement catheter can be convenient follow the seal wire stretches into sick and wounded's is internal, greatly reduces the degree of difficulty that the nutrition tube was changed, and easy operation easily realizes.

Drawings

Fig. 1 is a schematic cross-sectional structure view of a feeding tube provided by the present invention;

fig. 2A and 2B are schematic cross-sectional views illustrating partial structures of a feeding tube assembly according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a guide wire according to an embodiment of the present invention;

FIG. 4A is a schematic view of an embodiment of a fastening member provided by the present invention;

FIG. 4B is a schematic view of the guidewire of FIG. 3 in use with the clasp of FIG. 4A;

fig. 5 is a schematic structural view of another guide wire according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings.

It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it is understood that "first" and "second" are only used for convenience of expression and should not be understood as limitations to the embodiments of the present invention, and the following embodiments do not describe any more.

Referring to fig. 1, the conventional feeding tube usually includes a liquid guiding tube 1 ', when the liquid guiding tube 1 ' is placed completely, the position of the liquid guiding tube 1 ' and the digestive tract is basically fixed, the liquid outlet hole 11 ' at the end of the liquid guiding tube is difficult to displace relative to the intestinal tract, when the nutrient solution flows out from the liquid outlet hole 11 ' through the liquid guiding tube 1 ', if the nutrient solution is large or viscous, after being used for a certain time, the blockage of the liquid outlet hole is easily caused, and further the liquid guiding tube 1 ' is not used for inputting the nutrient solution, and the difficulty of replacing the liquid guiding tube 1 ' is far higher than that of inserting the liquid guiding tube 1 ' for the first time, so that the requirement on the operation skill of medical personnel is high, and pain is easily.

In order to solve the technical problem, the embodiment of the utility model provides a nutrition tube assembly can solve the technical problem that the catheter is difficult to change, can effectively reduce sick and wounded's misery when being convenient for operate.

Specifically, as shown in fig. 2A and 2B, the feeding tube includes:

original catheter 1, replacement catheter 4, guidewire 3 and original catheter closure 2;

the original catheter 1 comprises a first inner cavity, the replacement catheter 2 comprises a second inner cavity, and the diameter of the first inner cavity and the diameter of the second inner cavity are both larger than the diameter of the guide wire 3;

the original catheter closing piece 2 is used for shielding the in-vivo port of the first inner cavity, and when the original catheter 1 is placed in a body, the original catheter closing piece 2 can be digested in an intestinal tract to expose the in-vivo port of the first inner cavity, so that the guide wire 3 can penetrate out of the in-vivo port.

It should be understood that the inlet end of the original catheter 1 is provided with a channel 11, and the channel 11 penetrates through the wall of the original catheter, so that the nutrient solution in the original catheter 1 can flow out into the intestinal tract of the sick and wounded. Likewise, the inlet ends of the replacement catheters 4 are each provided with a channel for the outflow of nutrient solution. Openings are formed in two ends of a second inner cavity of the replacement catheter 4, and the guide wire 3 can conveniently penetrate through the openings.

It can be understood by those skilled in the art that the body end refers to the end of the original catheter 1 and the replacement catheter 4 entering the body of the sick and wounded, and opposite to the body end, the original catheter 1 and the replacement catheter 2 further include an external end (not shown in fig. 2A and 2B), the external end is used for external fixation, nutrient solution injection, etc., in the embodiment of the present invention, the external end is not modified, and those skilled in the art can adopt various external end structures in the prior art, which is not limited herein.

It should be noted that, during the process of inserting the original catheter 1 into the body of the sick and wounded, the original catheter closing member 2 can effectively prevent the guide wire 3 placed in the original catheter 1 from penetrating out of the digestive tract of the puncture to cause injury.

For the utility model provides a method of use of nutrition tube subassembly, explain as follows:

the guide wire 3 is arranged in the original catheter 1, the original catheter 1 is inserted into the body of the sick and wounded by utilizing the guiding function of the guide wire 3, the guide wire 3 is drawn out, and the original catheter 1 starts to be used. The primary catheter closure 2 is placed in the intestinal tract at a body port which is gradually digested to expose the first lumen. It will be appreciated that nutrient solution can flow out through the body port, thereby, equivalently increasing the passage 11 of the original catheter 1, reducing the chance of blockage of the original catheter 1 and, to a certain extent, increasing the service time of the original catheter 1.

When the original catheter 1 needs to be replaced, the guide wire 3 extends into the original catheter 1, the original catheter 1 is pulled out after the length of the guide wire 3 extending into the original catheter is larger than the distance from the nasal cavity to the intestinal tract, and the guide wire 3 can penetrate through the internal port of the body, so that the guide wire 3 can be kept in the body of a sick and wounded while the original catheter 1 is pulled out. And sleeving the replacement catheter 4 into the guide wire 3, extending into the body of the sick and wounded along the guide wire 3, and pulling out the guide wire 3 when the replacement catheter 4 reaches a proper position, wherein the replacement catheter 4 is used at the moment, so that the replacement of the nutrition tube is completed.

Therefore, according to the feeding tube assembly provided by the embodiment of the invention, the diameters of the original catheter and the replacement catheter are both larger than the diameter of the guide wire, so that the guide wire can extend into the original catheter and the replacement catheter and can move relatively; utilize former pipe closing member is sealed the internal port of former pipe, and former pipe closing member can be exposed by the digestion in the intestinal internal port makes the seal wire can wear out internal port when needs are changed when former pipe, the seal wire is worn out internal port can realize keeping somewhere when taking out former pipe the seal wire is in sick and wounded's is internal, makes the edge that replacement pipe can be convenient the seal wire stretches into sick and wounded's is internal, greatly reduces the degree of difficulty that the nutrition tube was changed, and easy operation easily realizes, effectively reduces sick and wounded's misery.

Alternatively, the original catheter 1 and the replacement catheter 4 have an outer diameter equal to the size of the required for both insertion into the body and delivery of the nutrient solution, the skilled person being able to specifically select the appropriate size based on experience. Further, the diameters of the first inner cavity and the second inner cavity are equal, and the diameters are of a size capable of meeting the conveying requirement of nutrient solution while enough pipe wall thickness is reserved, so that the strength of the original catheter 1 and the strength of the replacement catheter 4 are guaranteed.

Optionally, the material of the guide wire 3 is plastic-coated metal.

It will be appreciated that the material of the raw catheter 1 comprises a medical grade rubber material and the material of the raw catheter closure 2 may be formed similarly to a pharmaceutical capsule, comprising one or more of gelatin, cellulose or polysaccharides, prepared by the addition of suitable excipients.

Further, the inlet end of the original conduit 1 and the original conduit closing part 2 are connected through screw connection or plug connection. Optionally, the original catheter closure 2 is inserted into the inlet end of the original catheter 1, and the original catheter closure 2 and the original catheter 1 are connected by friction force therebetween. Optionally, the inlet end and the original catheter closure 2 are provided with mutually matching threads for realizing the screwing. The connection mode is simple to realize, the internal port of the first inner cavity can be effectively shielded, and the phenomenon that the guide wire 3 penetrates out of the internal port when guiding the original catheter 1 into the body to damage a digestive system is avoided.

In some embodiments of the present invention, the length of the guidewire 3 is greater than twice the length of the replacement catheter 4. Through setting up the length of seal wire 3 is carrying out when changing of replacement pipe 4, the insertion that replacement pipe 4 can be convenient 3 parts that the seal wire is located the sick and wounded are external, works as when replacement pipe 4 begins to get into internally, the external end of seal wire 3 exposes, and the medical personnel of being convenient for operate. As will be appreciated by those skilled in the art, the distance from the nasal cavity to the intestine is within a range, and for the purpose of delivering nutrient solution to the intestine, the length of each of the original catheter 1 and the replacement catheter 4 is typically greater than the distance from the nasal cavity to the intestine. Optionally, the length of the replacement catheter 4 is equal to the length of the original catheter 1, and the arrangement is convenient for processing.

Fig. 3 is a schematic cross-sectional view of a guide wire according to some embodiments of the present invention. Specifically, the guide wire comprises a main guide wire 32 and an extension guide wire 33, and the extension guide wire 33 is detachably connected with the main guide wire 32. With such an arrangement, only the main guide wire 32 is needed to be used in the process of installing the original catheter 1, which is simple and convenient. When the original catheter 1 needs to be pulled out and the replacement catheter 4 needs to be inserted, the extension guide wire 33 and the main guide wire 32 can be connected to increase the length, so that the pulling out of the original catheter 1 and the insertion of the replacement catheter 4 are facilitated, and the operation of medical staff is facilitated.

The length of the main guidewire 32 and the extension guidewire 33 can be set by one skilled in the art as desired, for example: the main guide wire 32 has a length greater than that of the original catheter 1, and the extension guide wire 33 has a length greater than that of the replacement catheter 4.

Further, the main guide wire 32 comprises a main connecting portion 34, the extension guide wire 33 comprises an extension connecting portion 35, and the main connecting portion 34 and the extension connecting portion 35 are detachably connected. Through setting up connecting portion respectively, realize the main seal wire 32 with extend seal wire 33's dismantlement and connect, it is right main seal wire 32 with extend seal wire 33's overall structure changes for a short time, does not influence main seal wire 32 with extend seal wire 33 and insert first inner chamber with the second inner chamber, and removal that can be convenient.

Referring to fig. 3, 4A and 4B, in some embodiments of the present invention, the fastening member 5 is further included, the main connecting portion 34 and the extension connecting portion 35 are both semi-spheres, the fastening member 5 includes two mutually fastened semi-spherical shells 51, and a through hole 52 is provided on the semi-spherical shell 51 for the main guide wire 32 and the extension guide wire 33 to pass through. Specifically, the main connection portion 34 and the extension connection portion 35 are placed in one of the hemispherical shells 51, and the main guide wire and the extension guide wire 33 are passed through the through hole 52 and are fastened to the other hemispherical shell 51 (as shown in fig. 4B). By arranging the semi-sphere and the semi-sphere shell, the surface of the joint of the main guide wire 32 and the extension guide wire 33 is a spherical surface, and when the main guide wire 32 and the extension guide wire 33 move relative to the original catheter 1 and the replacement catheter 4, the resistance is small and the wall of the catheter cannot be damaged.

The utility model discloses still provide an alternative embodiment, as shown in fig. 5, main connecting portion 34 is first helical structure, extension connecting portion 35 is the second helical structure, first helical structure with the second helical structure mutually supports and realizes connecting. The connection is achieved by rotating the two helical structures so that the main guidewire 32 and the extension guidewire 33 are twisted together. The diameters of the main guide wire 32 and the extension guide wire 33 are not changed in such a connection mode, and the convenience of the main guide wire 32 and the extension guide wire 33 is effectively guaranteed.

In some embodiments of the utility model, still include the scriber, the scriber can dismantle the setting and be in on the seal wire 3, be used for following seal wire 3 extracts scratch when former pipe 1. Scratch through setting up the cut out knife former pipe 1 for seal wire 3 also can not by when shorter length former pipe 1 cover is inside, exposure that can be convenient seal wire 3 the medical personnel of being convenient for operate.

In some embodiments of the present invention, the body end of the guide wire 3 is provided with a spherical ball 31 (see fig. 2A and 3 for details). Through setting up ball 31, the hardness of front end when can guaranteeing the guide wire 3 guide on the one hand, on the other hand can protect former pipe 1, prevent that guide wire 3 from stabbing former pipe closing part 2.

In some embodiments of the invention, the primary catheter closure 2 comprises a spherical crown surface (see fig. 2A). Through setting up the spherical crown face, reduce former pipe 1 inserts the internal resistance of sick and wounded, reduces because insert former pipe 1 improves nutrition tube assembly's factor of safety to digestive system.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also combinations between technical features in the above embodiments or in different embodiments are possible, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omission, modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. A feeding tube assembly, comprising:

a primary catheter, a replacement catheter, a guidewire, and a primary catheter closure;

the primary catheter comprises a first lumen, the replacement catheter comprises a second lumen, and the diameter of the first lumen and the diameter of the second lumen are both larger than the diameter of the guide wire;

the original catheter closing piece is used for shielding the in-vivo port of the first inner cavity, and when the original catheter is placed in a body, the original catheter closing piece can be digested in an intestinal tract to expose the in-vivo port of the first inner cavity, so that the guide wire can penetrate out of the in-vivo port.

2. The feeding tube assembly set forth in claim 1, wherein the inlet end of the primary catheter and the primary catheter closure are connected by screwing or plugging.

3. The feeding tube assembly set forth in claim 1, wherein said guidewire has a length greater than twice a length of said replacement catheter.

4. The feeding tube assembly set forth in claim 1, wherein said guide wire comprises a main guide wire and an extension guide wire, said extension guide wire being removably attached to said main guide wire.

5. The feeding tube assembly set forth in claim 4, wherein the primary guidewire includes a primary connection portion and the extension guidewire includes an extension connection portion, the primary connection portion and the extension connection portion being removably connected.

6. The feeding tube assembly set forth in claim 5 further comprising a fastening member, wherein the main connection portion and the extension connection portion are each a semi-sphere, the fastening member comprises two semi-sphere shells fastened to each other, and a through hole is formed in the semi-sphere shells for the main guide wire and the extension guide wire to pass through.

7. The feeding tube assembly set forth in claim 5 wherein the primary connecting portion is a first helical structure and the extension connecting portion is a second helical structure, the first and second helical structures cooperating to effect the connection.

8. The feeding tube assembly set forth in claim 1 further comprising a scoring knife removably disposed on the guidewire for scoring the parent catheter as the parent catheter is drawn along the guidewire.

9. The feeding tube assembly set forth in claim 1 wherein the guidewire has an inlet end provided with a ball.

10. The feeding tube assembly set forth in claim 1, wherein the primary catheter closure includes a spherical crown surface.

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