CN217612070U - Nasogastric tube - Google Patents

Abstract

The utility model discloses a nasogastric tube, include: the hose comprises a hose main body, a hose cover and a hose cover, wherein an inlet and an outlet are respectively arranged at two ends of the hose main body, and a central channel for communicating the inlet and the outlet is arranged in the hose main body; it is characterized by also comprising: the induction air bag is arranged on the outer side wall of the hose main body and is of an integrated structure with the hose main body; the lower end of the connecting pipe is positioned in the hose body and communicated with the induction air bag, the upper end of the connecting pipe extends to the position of the inlet and is exposed outside the hose body, and a film is covered at the upper end of the connecting pipe and used for responding to the air pressure change in the connecting pipe to bulge or indent. The utility model provides a nasogastric tube, its easy operation to it is accurate to insert the position judgement to the stomach tube.

Description

Nasogastric tube

Technical Field

The utility model relates to the technical field of medical auxiliary equipment, in particular to a nasogastric tube.

Background

Gastric tubes are devices that help patients who cannot swallow in special situations deliver the necessary moisture and food, and generally include orogastric tubes inserted orally and nasogastric tubes inserted through the nostrils, also known as oral and nasogastric tubes. And to some unconscious patients, because the patient can not make effective reaction in the process of carrying out nasogastric tube intubation, whether the trachea is entered by mistake in the inserted in-process that consequently needs medical personnel to carry out nasogastric tube in time judge.

The existing clinical treatment generally adopts the following three ways to judge:

1) Injecting air into the stomach tube through the injector, and judging whether the stomach of the patient has air passing underwater sound by matching with the stethoscope; the method has more operation steps and has the risk of misjudgment;

2) Inserting the exposed end part of the gastric tube into water, and observing whether bubbles overflow; the method needs additional preparation of a basin, and is inconvenient to operate;

3) Withdrawing the stomach contents from the stomach tube by using the syringe; the method may cause damage in the trachea, and meanwhile, the operation is inconvenient because the extra syringe needs to be used for drawing back.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem in the correlation technique to a certain extent at least: provided is a nasogastric tube which is easy to operate and which can accurately judge the position of insertion of the nasogastric tube.

Therefore, an object of the present invention is to provide a nasogastric tube, comprising:

the hose comprises a hose main body, wherein an inlet and an outlet are respectively arranged at two ends of the hose main body, and a central channel for communicating the inlet and the outlet is arranged in the hose main body;

it is characterized by also comprising:

the induction air bag is arranged on the outer side wall of the hose body and is of an integrated structure with the hose body;

the connecting pipe, the lower extreme is located the hose main part and communicates with the response gasbag, and the upper end extends to the import position and exposes outside the hose main part in, the upper end of connecting pipe covers there is the film for the interior pressure variation of response connecting pipe is bloated or the indent. Because there is the air current change of reciprocating cycle in the respiratory in-process air duct of patient, consequently can convert the air current change of outside into the atmospheric pressure change in the response gasbag through the response gasbag, finally judge through the bulging of film or indent whether the response gasbag inserted along with the hose main part has inserted the stomach tube or has inserted the trachea by mistake, can judge the inserted position of stomach tube in real time at the in-process of intubate from this, easy operation, the judgement is timely.

Preferably, the connecting pipe comprises an external pipe and an internal pipe integrated in the side wall of the hose body, the lower end of the internal pipe is communicated with the induction air bag, the upper end of the internal pipe is communicated with one end of the external pipe, and the other end of the external pipe is covered with the film. The position and the orientation of the film can be randomly placed through the external tube, so that the medical care personnel can conveniently observe the intubation tube.

Preferably, a breaking groove is formed in the pipe wall of the external pipe at the joint of the external pipe and the internal pipe. Can directly drag external pipe and break this external pipe after medical personnel accomplish the stomach tube intubate through breaking the groove for hose body's surfacing.

Preferably, a diaphragm is arranged in the induction air bag, the diaphragm divides an inner cavity of the induction air bag into an upper cavity and a lower cavity along the axial direction of the hose main body, and the connecting pipe is communicated with the upper cavity.

Preferably, the number of the induction air bags is multiple, and the multiple induction air bags are uniformly distributed along the circumferential direction.

Preferably, a positioning air bag and an auxiliary air pipe are arranged on the outer side wall of the hose body and located between the inlet and the sensing air bag, one end of the auxiliary air pipe is communicated with the positioning air bag, and the other end of the auxiliary air pipe extends towards the position where the inlet is located and is exposed out of the hose body. The positioning air bag can be used for enabling the positioning air bag to bulge after being inflated, so that the axial movement of the hose main body can be reduced, and the situation that the hose main body is separated from the stomach is reduced.

Preferably, a guide wire allowing the guide wire to be drawn out is provided in the central passage of the hose body, and a rear end of the guide wire is exposed outside the central passage of the hose body.

Preferably, the front end of the guide steel wire is provided with a net bag, and the net bag is internally provided with the PH test paper. After the hose body is inserted in place, the guide steel wire is pulled away, whether the hose body is inserted into the stomach or not can be judged through PH test paper at the front end of the guide steel wire, and therefore the detection of the insertion position of the hose body is completed.

Preferably, a PH probe is arranged at the front end of the guide steel wire and is in wireless communication connection with an external host. The PH probe can judge whether the insertion position of the hose body is positioned in the stomach or not in real time after the hose body is inserted in place.

Preferably, the outlet includes a main outlet provided in an axial direction of the hose main body, and a side opening provided on a side wall of the hose main body and communicating with the central passage. Through the side opening, the central channel of the hose body can be prevented from being blocked when the main outlet is pressed against the stomach wall.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

The technical scheme has the following advantages or beneficial effects: can detect the outer air current change of response gasbag through the response gasbag, if the inserted trachea of patient then will produce the air current along with patient's breathing, make response gasbag internal air pressure periodic fluctuation from this, make from this and respond to the also synchronous fluctuation of atmospheric pressure in the connecting pipe of gasbag intercommunication, then whether there is the periodic variation of atmospheric pressure in the connecting pipe directly perceivedly judgement through the bulging or the indent of the film that covers on the connecting pipe, finally can be real-time judgement stomach tube insert the stomach or insert the trachea by mistake.

Drawings

Fig. 1 is a schematic three-dimensional structure of a nasogastric tube of the present invention.

Fig. 2 is a front view of a nasogastric tube of the present invention.

Fig. 3 isbase:Sub>A sectional view taken in the direction of "base:Sub>A-base:Sub>A" in fig. 2.

Fig. 4 is a schematic perspective view of the cross-sectional view of fig. 3.

Fig. 5 is a partially enlarged view of the region "B" in fig. 3.

Fig. 6 is a partially enlarged view of the region "C" in fig. 3.

Fig. 7 is a partially enlarged view of the region "D" in fig. 3.

Fig. 8 is a partially enlarged view of the region "E" in fig. 4.

Fig. 9 is a partially enlarged view of the region "F" in fig. 4.

Fig. 10 is a schematic diagram of the internal structure of the position of the middle thin film according to the present invention.

Fig. 11 is a schematic view showing another construction of the hose body of fig. 9 after the guide wires are withdrawn.

Wherein, 1, hose body; 1.1, an inlet; 1.2, an outlet; 1.2.1, a main outlet; 1.2.2, side opening; 1.3, a central channel; 2. sensing an air bag; 3. a connecting pipe; 3.1, arranging a pipe inside; 3.2, an external pipe; 3.3, breaking the groove; 4. a film; 5. A diaphragm; 6. an upper chamber; 7. a lower chamber; 8. positioning the air bag; 9. an auxiliary trachea; 10. a guide wire; 11. a net bag; 12. pH test paper; 13. a PH probe.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.

A nasogastric tube according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The first embodiment is as follows:

the utility model provides a nasogastric tube, as shown in the figure, it includes:

the hose comprises a hose body 1, wherein an inlet 1.1 and an outlet 1.2 are respectively arranged at two ends of the hose body 1, and a central channel 1.3 for communicating the inlet 1.1 with the outlet 1.2 is arranged in the hose body 1;

it is characterized by also comprising:

the induction air bag 2 is arranged on the outer side wall of the hose body 1 and is of an integrated structure with the hose body 1;

and the lower end of the connecting pipe 3 is positioned in the hose main body 1 and is communicated with the induction air bag 2, the upper end of the connecting pipe extends to the position of the inlet 1.1 and is exposed outside the hose main body 1, and the upper end of the connecting pipe 3 is covered with a thin film 4 for responding to the air pressure change in the connecting pipe 3 to bulge or indent.

The hose body 1 is generally made of a medical flexible material, and is mostly made of polyurethane or a silica gel material.

The connecting pipe 3 comprises an external pipe 3.2 and an internal pipe 3.1 integrated in the side wall of the hose body 1, the lower end of the internal pipe 3.1 is communicated with the induction air bag 2, the upper end of the internal pipe 3.1 is communicated with one end of the external pipe 3.2, the film 4 covers the other end of the external pipe 3.2, the external pipe 3.2 can be communicated with the upper end of the internal pipe 3.1 through a connecting hole in the outer side wall of the hose body as shown in the figure, or can be communicated with the upper end of the internal pipe 3.1 through a central channel 1.4 in the hose body 1 and extend out of the hose body 1 from the inlet 1.1.

The pipe wall of the external pipe 3.2 is provided with a breaking groove 3.3 at the joint part of the internal pipe 3.1. The snapping grooves 3.3 are annular grooves in the outer side wall of the external pipe 3.2, so that the wall thickness of the external pipe 3.2 at the position where the snapping grooves 3.3 are located is thin, tensile stress can be concentrated in the snapping grooves 3.3 when the external pipe 3.2 receives external tensile force, and finally the external pipe 3.2 is broken along the snapping grooves 3.3 and the broken surface is flat. The effect of doing so lies in accomplishing the intubate when the stomach tube of this embodiment after, can demolish this external pipe 3.2 from hose body 1 to demolish the process simply, the fracture face after demolising also flushes with hose body 1's surface, can not leave the burr, and the security is good.

In order to increase the sensitivity of the sensing balloon 2 for external air flow detection, the present embodiment is improved in that: be equipped with diaphragm 5 in the response gasbag 2, diaphragm 5 will the inner chamber of response gasbag 2 is separated into chamber 6 and lower chamber 7 along the axial of hose main part 1, lower chamber 7 is a closed chamber, and connecting pipe 3 and the 6 intercommunications of upper chamber. Thus, as shown in fig. 5, when the patient exhales, the airflow flows from bottom to top, and at this time, due to the lower chamber 7, the upper chamber 6 is located at the back position of the airflow, and the external air pressure received by the upper chamber 6 is small; when a patient inhales, the airflow flows from top to bottom, at the moment, due to the existence of the lower chamber 7, the upper chamber 6 is positioned at the front position of the airflow, so that the pressure on the upper chamber 6 is large, and finally, the periodic change of the air pressure in the upper chamber 6 reacts to the inside of the connecting pipe 3 to cause the fluctuation of the film 4 covered on the exposed end part of the connecting pipe 3, namely, the film is bulged when the pressure is increased or the film is concave when the pressure is reduced.

The number of the induction air bags 2 is multiple, and the induction air bags 2 are uniformly distributed along the circumferential direction. The narrow passageway of formation air current between two arbitrary adjacent response gasbags 2 can be so that through the response gasbag 2 of a plurality of circumference equipartitions, and the air pressure change of air current in this narrow region is bigger this moment, consequently can be so that the change of response gasbag 2 internal gas pressure is bigger, and this great air pressure change also more is favorable to observing the change of film 4.

In addition, in order to reduce the possibility that the sensing balloon 2 is too large and causes pressure to the inner wall of the esophagus to cause ulcer, the sensing balloon 2 needs to be designed in a certain size, that is, the sensing balloon 2 is in clearance fit with the esophagus when the sensing balloon 2 is placed into the esophagus of a patient along with the hose body 1.

In order to reduce the risk that a gastric tube inserted in place is pulled out during use, a positioning air bag 8 is arranged on the outer side wall of the hose body 1 at a position between the inlet 1.1 and the sensing air bag 2, and an auxiliary air tube 9 is communicated with the positioning air bag 8 at one end, and the other end of the auxiliary air tube 9 extends towards the position of the inlet 1.1 and is exposed out of the hose body 1. The positioning air bag 8 can be decompressed or inflated and expanded through the auxiliary air pipe 9, so that the positioning air bag 8 is positioned between two narrow positions of the esophagus of a patient, and the stomach tube can be effectively prevented from being separated due to the movement of an overlarge stroke along the axial direction through the positioning air bag 8; the stricture site of the esophagus includes a first stricture, a second stricture and a third stricture, and the positioning balloon 8 is preferably located between the first stricture and the second stricture. Similarly, in order to avoid the positioning balloon 8 being inflated too much and causing pressure on the inner wall of the esophagus to cause esophageal ulcer of the patient, a certain data limit needs to be made on the positioning balloon 8 at best, which can be obtained based on clinical limited experimental data.

A guide steel wire 10 which is allowed to be drawn out is arranged in the central channel 1.3 of the hose body 1, and the rear end of the guide steel wire 10 is exposed out of the central channel 1.3 of the hose body 1. That is, the front end of the guide wire 10 extends into the central channel 1.3 of the hose body 1 and is located at a position corresponding to the outlet of the hose body 1, and at this time, a section of the guide wire 10 is left at the rear end of the guide wire and is located outside the inlet of the hose body 1, and at this time, the shape of the hose body 1 can be bent and shaped well by the guide wire 10, so that the hose body 1 can be inserted into the stomach of a patient better from the nostril of the patient, and after the hose body 1 is inserted in place, a medical worker only needs to grasp the tail end of the guide wire 10 to pull the guide wire 10 out of the central channel 1.3 of the hose body 10. The above-mentioned guide wire 10 allowing to be drawn away can also be understood as a guide wire 10 provided in the central passage 1.3 of the hose body 1, the guide wire 10 being detachably connected to the hose body 1.

The front end of the guide steel wire 10 is provided with a net bag 11, and PH test paper 12 is contained in the net bag 11. Further, in order to facilitate loading of a new PH strip 12 into the net 11 when the guide wire 10 can be reused, and also to reduce the PH strip 12 from falling out of the net 11 when the net 11 is located in the stomach of the patient, the improvement of the embodiment is: the mesh of the net bag 11 is long-strip-shaped, and the mesh on the net bag 11 can be expanded when the net bag 11 is subjected to external extrusion force.

When guide steel wire 10 can used repeatedly, the front end of guide steel wire 10 is inlayed and is equipped with the PH probe, the PH probe is connected with outside host computer wireless communication, and the wireless signal who sends from this through the PH probe makes outside host computer can be through with the PH probe between the wireless communication connect real-time wireless signal who receives this PH probe and send, can make medical personnel in time observe the PH information that shows on the outside host computer from this. The PH probe is also called a PH sensor, and the Chinese meaning of the PH is pH value.

Further, if set up PH test paper or PH probe on the guide wire though can be fine judgement stomach tube inserted position when inserting the stomach tube, nevertheless because the patient also has the risk that the stomach tube is palirrhea and is deviate from the stomach in daily nursing process, thereby hose body 1 exists the risk of flowing back to the lung from the stomach of deviating from, consequently based on the demand to some patients real-time supervision, the improvement of this embodiment lies in: as shown in fig. 11, a PH probe 13 is disposed at an original main outlet 1.2.1 of the hose body 1, the PH probe 13 is integrated at an end of the hose body 1, and only a side outlet 1.2.2 on a sidewall of the hose body 1 is reserved, at this time, a wireless communication connection is maintained between the PH probe 13 and an external host in real time, which certainly has the advantage of being able to realize real-time monitoring on whether the hose body 1 is well maintained in the stomach of a patient, and the disadvantage is that since the hose body 1 is a disposable consumable, the PH probe 13 needs to be replaced along with replacement of the hose body 1, thereby increasing the cost of the hose body 1.

In addition, the external host may be a display device installed beside a patient's bed or a main control computer of a nurse station, or may be a simple display lamp integrated on the hose body 1 near the inlet 1.1, that is, the PH detection signal of the PH probe is displayed by the color difference of the display lamp.

The outlet 1.2 comprises a main outlet 1.2.1 arranged in the axial direction of the hose body 1 and a side opening 1.2.2 arranged on the side wall of the hose body 1 and communicated with the central channel 1.3.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Various alterations and modifications will no doubt become apparent to those skilled in the art after having read the above description. It is therefore intended that the appended claims be interpreted as covering all alterations and modifications as fall within the true spirit and scope of the invention. Any and all equivalent ranges and contents within the scope of the claims should be considered to be within the intent and scope of the present invention.

Claims (10)

1. A nasogastric tube comprising:

the hose comprises a hose main body (1), wherein an inlet (1.1) and an outlet (1.2) are respectively formed in two ends of the hose main body (1), and a central channel (1.3) used for communicating the inlet (1.1) and the outlet (1.2) is arranged in the hose main body (1);

it is characterized by also comprising:

the induction air bag (2) is arranged on the outer side wall of the hose main body (1) and is of an integrated structure with the hose main body (1);

connecting pipe (3), the lower extreme is located hose main part (1) and communicates with response gasbag (2), and the upper end extends to import (1.1) position and exposes outside hose main part (1), the upper end of connecting pipe (3) covers there is film (4) for the interior pressure variation of response connecting pipe (3) is bloated or the indent.

2. A nasogastric tube according to claim 1, wherein: the connecting pipe (3) comprises an external pipe (3.2) and an internal pipe (3.1) integrated in the side wall of the hose main body (1), the lower end of the internal pipe (3.1) is communicated with the induction air bag (2), the upper end of the internal pipe (3.1) is communicated with one end of the external pipe (3.2), and the film (4) covers the other end of the external pipe (3.2).

3. A nasogastric tube according to claim 2, wherein: the pipe wall of the external pipe (3.2) is provided with a breaking groove (3.3) at the joint of the internal pipe (3.1).

4. A nasogastric tube according to claim 1, wherein: be equipped with diaphragm (5) in response gasbag (2), diaphragm (5) will the inner chamber of response gasbag (2) is separated into upper chamber (6) and lower chamber (7) along the axial of hose main part (1), connecting pipe (3) and upper chamber (6) intercommunication.

5. A nasogastric tube according to any one of claims 1-4, wherein: the induction air bags (2) are multiple, and the induction air bags (2) are uniformly distributed along the circumferential direction.

6. A nasogastric tube according to claim 1, wherein: the utility model discloses a hose, including hose main body (1), the position that lies in between import (1.1) and response gasbag (2) on the lateral wall of hose main body (1) is equipped with location gasbag (8) to and supplementary trachea (9) of one end and location gasbag (8) intercommunication, the other end of supplementary trachea (9) extends and exposes outside hose main body (1) towards import (1.1) position.

7. A nasogastric tube according to claim 1, wherein: a guide steel wire (10) allowing the hose body to be drawn away is arranged in the central channel (1.3) of the hose body (1), and the rear end of the guide steel wire (10) is exposed out of the central channel (1.3) of the hose body (1).

8. A nasogastric tube according to claim 7, wherein: the front end of the guide steel wire (10) is provided with a net bag (11), and PH test paper (12) is contained in the net bag (11).

9. A nasogastric tube according to claim 7, wherein: the front end of the guide steel wire (10) is provided with a PH probe which is in wireless communication connection with an external host.

10. A nasogastric tube according to claim 1, wherein: export (1.2) including along the main export (1.2.1) of the axial setting of hose main part (1) to and locate on the lateral wall of hose main part (1) and with side opening (1.2.2) of center channel (1.3) intercommunication.

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