CN214232109U

CN214232109U - Stomach tube subassembly

Info

Publication number: CN214232109U
Application number: CN202022397486.0U
Authority: CN
Inventors: 田朝阳; 余飞
Original assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Current assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-09-21
Anticipated expiration: 2030-10-23

Abstract

A gastric tube assembly comprising a gastric tube and a balloon. The stomach tube is provided with a first cavity for supplying nutrition and a second cavity for detecting pressure, and the wall of the second cavity is provided with an air vent penetrating to the outer wall of the stomach tube. The air bag is provided with an integrally formed bag body which is provided with a cavity and two oppositely arranged assembling ports. The stomach tube crosses the cavity from the assembly hole, and the inner wall of assembly hole and stomach tube outer wall sealing connection, this cavity through the air vent with second passageway sealing communication. The air bag is of an integrally formed structure, has no seam, and can avoid the risk of scratch caused by seam splicing. Moreover, the air bag is directly sleeved on the stomach tube, and the inner wall of the assembling port on the bag body is attached to the axial direction of the outer wall of the stomach tube, so that the air bag is easier to seal, and the sealing reliability can be improved.

Description

Stomach tube subassembly

Technical Field

The application relates to a medical instrument, in particular to a stomach tube assembly.

Background

In the medical field, patients commonly use a variety of catheters, with a gastric tube being one of many. Gastric tubes are typically inserted from the patient's nasal cavity, through the esophagus and into the patient's stomach to provide the patient with a supply of nutrients or gastrointestinal decompression.

Monitoring the pressure in the esophagus or stomach and calculating parameters therefrom is of great importance in reducing lung damage during mechanical ventilation of a patient. For measuring esophageal or intragastric pressure, a combination of a flexible airway tube and a balloon is often used for pressure measurement purposes.

A stomach tube with an air bag is characterized in that the air bag is adhered to the stomach tube, the stomach tube has the functions of supplying nutrition to the stomach tube and reducing the pressure of the stomach and intestines, and the pressure in the esophagus or the stomach of a human body can be monitored. In order to realize the pressure monitoring function, a gas transmission channel must be established to transmit the air in the air bag to the pressure monitoring equipment outside the human body.

In this stomach tube, the gasbag generally forms for two plastic film concatenations, and the concatenation department of film generally has the seam, puts the risk of the human mucous membrane of fish tail occasionally of managing. In addition, the diameters of the head and the tail of the air bag are larger than that of the gastric tube, and when the air bag is adhered to the gastric tube, the head and the tail of the air bag are required to be wound on the gastric tube and then adhered to the gastric tube. Such bonding can make the sealing of the two ends of the bladder unreliable.

SUMMERY OF THE UTILITY MODEL

The application provides a stomach tube subassembly to a new gasbag and stomach tube assembly structure is provided.

In accordance with the above purposes, one embodiment provides a gastric tube assembly comprising:

the stomach tube is provided with a first cavity for supplying nutrition and a second cavity for detecting pressure, the first cavity is provided with a nasal feeding interface for inputting nutrition, the second cavity is provided with a gas interface, the wall of the second cavity is provided with a vent hole penetrating to the outer wall of the stomach tube, and the vent hole is communicated with the second cavity;

and the air bag is provided with an integrally formed air bag body, the air bag body is provided with a cavity and two oppositely arranged assembling ports, the stomach tube penetrates through the cavity from the assembling ports, the inner wall of the assembling ports is in sealed connection with the outer wall of the stomach tube, and the cavity is communicated with the second cavity in a sealed manner through the air vent.

In one embodiment, the balloon body is provided with an inflation part and two connecting parts positioned at two ends of the inflation part, each connecting part is provided with one assembling port, and the stomach tube extends into the inflation part from the assembling port of the connecting part at one side, penetrates through the inflation part and extends out from the assembling port of the connecting part at the other side.

In one embodiment, the dimension of the inflatable portion in the radial direction of the gastric tube is larger than the dimension of the fitting opening in the connecting portion.

In one embodiment, the inflation portion and the connecting portion are both cylindrical, and the diameter of the inflation portion is larger than that of the connecting portion.

In one embodiment, the fitting opening has a diameter smaller than the diameter of the gastric tube outer wall.

In one embodiment, the air ports are arranged along the axial direction of the second cavity.

In one embodiment, the bladder is a unitary structure made of a polymer material.

In one embodiment, the number of the second channels is more than two, and all the second channels are arranged around the first channel.

The utility model provides an in the embodiment, still include connector and air duct, the connector has body and rigid connection spare, the body has first passageway and second passageway, first passageway with the nasal feeding interface of first chamber way seals the intercommunication to form the nasal feeding passageway, the one end of second passageway with the gas interface of second chamber way seals the intercommunication, rigid connection spare has the gas passage who link up, rigid connection spare is located the second passageway, just rigid connection spare's one end is followed the gas interface stretches into in the second chamber way, the gas passage with the sealed intercommunication of second passageway.

In one embodiment, the body is provided with a concave assembly cavity, the first channel and the second channel penetrate through the concave surface of the assembly cavity, and one end of the stomach tube extends into the assembly cavity and is in sealed butt joint with the cavity wall of the assembly cavity.

The gastric tube assembly according to the above embodiments includes a gastric tube and a balloon. The stomach tube is provided with a first cavity for supplying nutrition and a second cavity for detecting pressure, and the wall of the second cavity is provided with an air vent penetrating to the outer wall of the stomach tube. The air bag is provided with an integrally formed bag body which is provided with a cavity and two oppositely arranged assembling ports. The stomach tube crosses the cavity from the assembly hole, and the inner wall of assembly hole and stomach tube outer wall sealing connection, this cavity through the air vent with second passageway sealing communication. The air bag is of an integrally formed structure, has no seam, and can avoid the risk of scratch caused by seam splicing. Moreover, the air bag is directly sleeved on the stomach tube, and the inner wall of the assembling port on the bag body is attached to the axial direction of the outer wall of the stomach tube, so that the air bag is easier to seal, and the sealing reliability can be improved.

Drawings

FIG. 1 is a schematic view of a gastric tube assembly according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a gastric tube according to an embodiment of the present application;

FIG. 3 is a schematic view of the construction of an air bag according to an embodiment of the present application;

fig. 4 is an enlarged view of a portion of the assembled structure of the gastric tube and the connector in an embodiment of the present application.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

Referring to fig. 1-3, in one embodiment, the gastric tube assembly includes a gastric tube 100 and a balloon 200.

The gastric tube 100 has a first lumen 110 for nutrient supply and a second lumen 120 for gas pressure monitoring. The first lumen 110 typically extends through the entire gastric tube 100. The first channel 110 has a nasal feeding port for the input of nutrients, which can be connected to external connectors and pipes, etc. to paste food with a grinder under special conditions to form nutrients, and the nutrients are injected into the first channel 110 through the nasal feeding port by a syringe to help patients who cannot swallow autonomously replenish water and food, and maintain metabolism, weight and nutrition in the body. The second channel 120 is one of the gas monitoring channels. This second lumen 120 has a gas interface, and the wall of the second lumen 120 has a vent through to the outer wall of the gastric tube 100, the vent communicating with the second lumen 120.

Referring to fig. 1 and 3, on the other hand, in one embodiment, the bladder 200 has an integrally formed bladder 210, and the bladder 210 has a cavity and two oppositely disposed fitting ports 201. This gasbag 200 is integrated into one piece structure, and the surface is smooth, does not have the piece, can avoid the fish tail risk that arouses by the piece, can not damage patient's mucous membrane at the catheterization in-process.

This stomach tube 100 crosses the cavity from assembly port 201, and the inner wall of assembly port 201 and stomach tube 100 outer wall sealing connection, cavity are through air vent and second chamber 120 sealing communication. The gasbag 200 is directly sleeved on the stomach tube 100, and the inner wall of the assembling port 201 on the gasbag body 210 is attached to the axial direction of the outer wall of the stomach tube 100, so that the sealing is easier, the sealing reliability can be improved, and the air leakage risk is greatly reduced.

The inner wall of the assembling port 201 and the gastric tube 100 can be fixed in a sealing manner by an adhesive, or can be fixed in a sealing manner by other manners, such as heat shrinkage treatment, welding, tight fit and the like.

Referring to fig. 1 and 3, in one embodiment, the bladder 210 has an inflation portion 211 and two connection portions 212 at both ends of the inflation portion 211. One fitting opening 201 is provided on each connecting portion 212. The gastric tube 100 extends from the mounting port 201 of the one side connecting portion 212 into the inflation portion 211, passes through the inflation portion 211, and extends from the mounting port 201 of the other side connecting portion 212.

In one embodiment, the dimension of the inflatable portion 211 in the radial direction of the gastric tube 100 is larger than the dimension of the fitting opening 201 on the connecting portion 212. The connecting portion 212 has a smaller diameter and is more easily fit and seal with the outer wall of the gastric tube 100. The diameter of the inflating part 211 is larger, which can satisfy the inflation of gas.

In one embodiment, the inflated portion 211 and the connecting portion 212 are cylindrical, and the diameter of the inflated portion 211 is larger than the diameter of the connecting portion 212.

In one embodiment, the diameter of the mounting port 201 is smaller than the diameter of the outer wall of the gastric tube 100, so that when the gastric tube 100 passes through the balloon 200, the inner wall of the mounting port 201 will be tightly attached to the gastric tube 100. When the balloon 200 is bonded, the two ends are slightly spread apart and then the gastric tube 100 is inserted. Because the diameter of the two ends of the air bag 200 is slightly smaller than that of the gastric tube 100, after the air bag 200 is sleeved on the gastric tube 100, the two ends can be automatically contracted and attached to the outer surface of the gastric tube 100. Then coating the adhesive on the joint for sealing and fixing. This method of assembly can significantly reduce the risk of air leakage from the bladder 200 and is relatively aesthetically pleasing.

Of course, in other embodiments, the diameter of the mounting port 201 may be greater than or equal to the diameter of the outer wall of the gastric tube 100.

Further, in one embodiment, the plurality of vents are arranged along the axial direction of the second chamber 120. The airbag 200 is directly covered over the vent to form communication.

Further, in one embodiment, the bladder 210 is a unitary structure made of a polymer material. The high polymer material has good ductility and is more suitable for inflation.

Referring to fig. 1-4, in another embodiment, the gastric tube assembly further comprises a connector 300 and an airway tube 400.

Referring to fig. 1 and 4, the connector 300 is used to interface the gastric tube 100 with other components for adapting. The connector 300 has a body 310 and a rigid connector 320. Wherein the body 310 has a first passage 311 and a second passage 312. The first channel 311 is in sealed communication with the nasogastric interface of the first channel 110 to form a nasogastric channel. One end of the second channel 312 is in sealed communication with the gas interface of the second chamber 120.

The rigid connector 320 can increase the reliability of the connection of the connector 300 to the gastric tube 100. The rigid connector 320 is provided in the second channel 312 and has a gas channel therethrough. One end of the rigid connector 320 extends from the gas port into the second channel 120, which is in sealed communication with the second channel 312. The airway tube 400 is in sealed communication with an end of the second channel 312 that faces away from the second channel 120, such that the airway tube 400 is in sealed communication with the cavity of the balloon 200, and the airway tube 400 is configured to be connected to a pressure monitoring device. The balloon 200 may be inflated via the airway tube 400, such as by injection of gas via a syringe or other gas supply. In addition, airway tube 400 may be used to communicate with an external pressure monitoring device to monitor pressure within balloon 200, and thus obtain and monitor gas pressure in the patient's esophagus and stomach. Referring to fig. 1, when there are more than two air ducts 400, the air ducts 400 can be collected at one position by the adapter 500 and then led out together, which facilitates subsequent docking.

In this embodiment, the rigid connector 320 is more secure than the capillary tube, and is not easy to break or leak, and the connector 300 is more reliably connected to the gastric tube 100, thereby avoiding the occurrence of problems due to inaccurate air pressure detection caused by gas leakage. And a part of the rigid connector 320 extends into the second channel 120, and another part is located in the second channel 312, so that a reinforcing structure can be formed between the gastric tube 100 and the connector 300, and the connection failure caused by the bending of the gastric tube 100 and the connector 300 under pressure can be avoided.

In one embodiment, the rigid connector 320 may be a metal connector made of a metal material or a hard polymer connector made of a hard polymer material. In addition, other materials that can improve the stability of the rigid connector 320 can be used.

Further, the first channel 110 requires nutrients to be infused and therefore has a lumen that is generally larger than the second channel 120. The number of the second channels 120 can be more than one, and the specific number can be determined according to the design and the use requirement of the gastric tube assembly.

Referring to fig. 2, in one embodiment, there are more than two second channels 120. The number of the second channels 312 of the connector 300 is set to be equal to the number of the second channels 120 in order to be respectively communicated with the two or more second channels 120. A second channel 120 is in sealed communication with a second channel 312, and a rigid connector 320 is disposed in each second channel 312.

In the case where there are two or more second channels 120, the second channel 120 may be disposed around the first channel 110 in order to make the gastric tube 100 as thin as possible. And correspondingly, a second channel 312 interfacing with the second channel 120 is also disposed around the first channel 311.

As shown in fig. 2, in one embodiment, the number of the second channels 120 is two, and the two second channels 120 surround the outside of the first channel 110, for example, are symmetrically distributed on both sides of the first channel 110.

Further, since the first channel 311 is a nasal feeding channel, the requirement for the size of the inner cavity is large. In order to ensure the dimensions of the first passageway 311 and the second passageway 312 without enlarging the size of the gastric tube 100, referring to fig. 4, in one embodiment, the second passageway 312 extends obliquely to the outside of the second lumen 120, so as to leave enough space to form the first passageway 311.

In particular, when there are more than two first channels 311, as shown in fig. 4, the first channels 311 may be located between the enclosed areas of all the second channels 312. The first channel 311 and the second channel 312 do not interfere with each other.

Further, the second channel 312 extends obliquely to the outside of the second channel 120, so that the assembly space of the airway tube 400 is larger, and therefore, in an embodiment, the diameter of the lumen of the airway tube 400 can be set to be not smaller than the diameter of the lumen of the second channel 120, that is, larger than or equal to the diameter of the lumen of the second channel 120, so that the air resistance of the whole airway system can be reduced, the gas inside the balloon 200 can be more easily transmitted to the pressure monitoring device, and the response time of pressure monitoring can be reduced.

Of course, in some embodiments, the diameter of the lumen of airway tube 400 may also be configured to be smaller than the diameter of the lumen of second lumen 120.

To adapt to the extended shape of the first channel 311, referring to fig. 4, in an embodiment, the rigid connection member 320 has a first extension 321 and a second extension 322, the first extension 321 is located in the second channel 120, and the second extension 322 is located in the second channel 312 and is disposed obliquely in the same direction as the second channel 312.

Referring to fig. 4, in one embodiment, the airway tube 400 is directly sealed and fixedly connected to the end of the rigid connector 320 facing away from the second lumen 120. In another embodiment, the airway tube 400 may also be directly sealed and fixedly connected to the end of the second channel 312 facing away from the second channel 120, rather than being directly connected to the rigid connector 320. The fixed connection may be achieved by adhesive or other fixing means, such as a tight fit, welding, etc.

Further, the connector 300 is fixedly connected to the gastric tube 100, and the fixed connection can be achieved by various means such as adhesive, tight fit, welding, etc. The rigid connector 320 and the body 310 may be fixedly connected or may be an injection molded integral structure.

Referring to fig. 4, in one embodiment, the body 310 has a concave assembly cavity 313, and the first channel 311 and the second channel 312 penetrate through the inner concave surface of the assembly cavity 313 (i.e., the inner end surface 314 of the assembly cavity 313). One end of the gastric tube 100 extends into the mounting cavity 313 and sealingly abuts against a cavity wall (e.g., a side wall, an inner end surface 314, etc.) of the mounting cavity 313. The fixed sealing between the gastric tube 100 and the wall of the assembling cavity 313 can be realized by various modes such as adhesive, tight fit, welding and the like.

Further, referring to fig. 1 and 4, in one embodiment, the gastric tube assembly further comprises a nasogastric connector 600, wherein the nasogastric connector 600 is in sealed communication with the first channel 311 of the connector 300. The nasogastric adapter 600 can be used to externally connect tubing or syringes for nasogastric procedures to drive the required nutrients into the gastric tube assembly.

It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.

Claims

1. A gastric tube assembly, comprising:

2. The gastric tube assembly of claim 1 wherein said balloon has an inflatable portion and two connecting portions at opposite ends of the inflatable portion, one of said mounting ports being provided on each connecting portion, said gastric tube extending into the inflatable portion from the mounting port of one connecting portion and through said inflatable portion and extending from the mounting port of the other connecting portion.

3. The gastric tube assembly of claim 2 wherein the dimension of said inflatable portion in the radial direction of said gastric tube is greater than the dimension of the mounting opening in said connecting portion.

4. The gastric tube assembly of claim 3 wherein said inflatable portion and said connecting portion are cylindrical, said inflatable portion having a diameter greater than a diameter of said connecting portion.

5. The gastric tube assembly of claim 1 wherein said fitting port has a diameter less than a diameter of an outer wall of said gastric tube.

6. The gastric tube assembly of claim 1 wherein said vent is arranged axially along said second lumen.

7. The gastric tube assembly of claim 1 wherein said balloon is of a unitary polymeric structure.

8. The gastric tube assembly of claim 1 wherein there are more than two second lumens, all of which are disposed around the first lumen.

9. The gastric tube assembly of any one of claims 1 to 8, further comprising a connector and an airway tube, the connector having a body and a rigid connector, the body having a first channel and a second channel, the first channel being in sealed communication with the nasogastric port of the first lumen to form a nasogastric channel, one end of the second channel being in sealed communication with the gas port of the second lumen, the rigid connector having a gas channel therethrough, the rigid connector being disposed in the second channel, and one end of the rigid connector extending from the gas port into the second lumen, the gas channel being in sealed communication with the second channel.

10. The gastric tube assembly of claim 9 wherein said body has a concave mounting cavity, said first and second passageways extending through the concave interior surface of said mounting cavity, one end of said gastric tube extending into said mounting cavity and sealingly engaging the wall of said mounting cavity.