CN212817589U - Special two-chamber pipe of selectivity intranasal intestines and stomach - Google Patents

Abstract

The utility model provides a special double-cavity catheter for selective transnasal gastrointestinal tract, which comprises a catheter tube body and a catheter seat connected with the tail end of the catheter tube body, wherein the catheter tube body is a double-cavity catheter and comprises a main cavity tube with larger inner diameter and an auxiliary cavity tube with smaller inner diameter; the head end part of the catheter tube body is made of a memory plastic material, wherein the head end part of the main cavity tube is bent and folded back to be in a loop shape, and the head end part of the auxiliary cavity tube is positioned on the inner side of the main cavity tube and is opened at the middle part of the loop shape. The utility model discloses a two-chamber pipe can improve the present intranasal pipe and put into the problem that exists among the treatment device, shortens to put the pipe time, alleviates patient's misery.

Description

Special two-chamber pipe of selectivity intranasal intestines and stomach

Technical Field

The utility model relates to an intervene treatment medical instrument field, concretely relates to nose stomach intestinal tract two-chamber pipe.

Background

At present, nasal catheter placement therapy is widely accepted and developed clinically in the treatment of patients requiring enteral nutrition and patients suffering from intestinal obstruction, and is particularly used as the first choice therapy in the treatment of postoperative gastroparesis and adhesive intestinal obstruction. The transnasal catheter placement treatment usually uses an intestinal nutrient canal and an intestinal obstruction catheter placed through the nose, is a medical device special for intervention operation in a digestive tract, and drives the catheter to completely pass through the upper digestive tract through the nasal cavity to the small intestine to be reached by means of the cooperation of a guide wire and the catheter, so that the effects of directly supporting the intestinal nutrient canal and dredging the intestinal obstruction are achieved.

Two methods are used for the placement of ileus catheters: the two methods have advantages and disadvantages respectively. The intubation insertion under X-ray fluoroscopy monitoring has wide indication, can be generally tolerated by patients, has low complication incidence rate, has the technical success rate of more than 90 percent, can display the trend of the alimentary canal by real-time radiography in the operation, is easy to pass through the obstructed part by using an ultra-smooth guide wire, has strong operation controllability, and is a preferred clinical insertion method. But has the disadvantage that X-ray radiation is harmful to the operator and the patient.

Typically, the X-ray catheterisation procedure is performed by an interventionalist: the nutrition tube or the intestinal obstruction catheter with the configured guide wire is inserted into the stomach through the nasal cavity on one side of a patient, reaches the stomach through the esophagus, then is guided to the antrum of the stomach by the guide wire, selectively enters the pyloric tube through the antrum, reaches the upper end of the jejunum through the duodenum, exits from the guide wire, fills the water sac at the front end of the catheter, and finishes the whole operation process.

In the aspect of placing operation, the head ends of the ileus catheter and jejunum nutrient canal which are clinically used at present are non-directional straight heads, and the tube bodies of the catheters are of soft structures, so that the ileus catheter and jejunum nutrient canal cannot be effectively supported and can not be directionally selected in the stomach. The guide wire is 1.24mm (0.045') thick and hard, and although the guide wire has a good supporting effect, the guide wire and the gastrointestinal tract structure pass through the tortuous antrum, pylorus and duodenal bulbar part, so that the direction selection is difficult frequently.

Disclosure of Invention

In view of this, the utility model aims at overcoming among the prior art that there is not the special selective catheter of intestinal to lead to in the alimentary canal select the direction difficulty, the operation technique is complicated, patient and art person excessively expose in unfavorable problems such as under the X line, provide a special two-chamber pipe device of intranasal intestines and stomach to improve the problem that exists in present intranasal catheter puts into treatment device, shorten and put the pipe time, alleviate patient's misery.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a special double-lumen catheter for selectively transnasal gastrointestinal tract comprises a catheter tube body and a catheter seat connected with the tail end of the catheter tube body, wherein the catheter tube body is a double-lumen catheter and comprises a main lumen tube with a larger inner diameter and an auxiliary lumen tube with a smaller inner diameter; the head end part of the catheter tube body is made of a memory plastic material, wherein the head end part of the main cavity tube is bent and folded back to be in a loop shape, and the head end part of the auxiliary cavity tube is positioned on the inner side of the main cavity tube and is opened at the middle part of the loop shape.

Further, the bending and folding part of the main cavity tube loop type part comprises a circular arc-shaped bending part, a first extending part extending from the tail end of the bending part to be deviated to the catheter tube body, and a second extending part extending from the tail end of the first extending part to be deviated to the catheter tube body, and the tail end of the auxiliary cavity tube is opened at the transition part of the bending part (111) and the first extending part (112).

Further, the tube body of the catheter tube body is made of polyamide material with supporting stainless steel weaving.

Further, the head end part of the catheter tube body is made of memory shaping woven nylon material with tungsten material marks.

Furthermore, alloy marks are arranged at the openings of the tail ends of the main cavity pipe and the auxiliary cavity pipe.

Furthermore, the outer diameter of the catheter body is 7Fr-2.39mm, the length of the catheter body is 130-170 cm, and hydrophilic coatings are attached to the inside and the outside of the catheter cavity.

Furthermore, the pipe seat is a Y-shaped connector, the main cavity pipe seat is a continuation of the pipe body of the main cavity pipe, and the angle of the auxiliary cavity pipe seat and the angle of the main cavity pipe seat form an angle of 30 degrees.

Further, the catheter hub is made of vinyl acetate and polyamide materials.

Further, the catheter is also provided with guide wires matched with the main cavity tube and the auxiliary cavity tube respectively.

Further, the inner diameter of the main cavity tube is 1.24mm, and a 0.045' hard guide wire is matched; the inner diameter of the auxiliary cavity tube is 0.97mm, and a hydrophilic guide wire of 0.035' is adapted.

The utility model has the advantages as follows:

1) the utility model provides a two-chamber pipe structure, because it is not the blood vessel to go up the alimentary canal, ureter appearance tubular structure, the mucosa that has the shrink, and cardia, pylorus isotructure, it selects repeatedly to need the seal wire to combine the pipe, two-chamber pipe can combine the different seal wire of diameter, 0.045 "hard seal wire through thicker lumen plays the supporting role, the hydrophilic seal wire through 0.035" of thinner lumen plays the optional role, and then improve the ability that propelling movement pipe and seal wire got into duodenum and near-end intestines, can reduce the complicated operating procedure of seal wire and pipe exchange simultaneously.

2) The utility model discloses having optimized the pipe tube head and moulding, having made it to become a tong "pan appearance structure, put into the pipe tube head to the stomach sinus on the one hand after, according to pipe memory moulding becomes tong" pan in the stomach sinus, combine 0.045 "hard seal wire to support the stomach sinus, make it become the foreign matter that is fixed in the stomach sinus, because the stomach intestine has from the peristaltic action, the pipe that supports through intestinal peristaltic movement propelling movement gets into the pylorus smoothly in the same direction as the peristaltic direction and removes to the duodenum depths.

3) The utility model discloses another aspect sets up two-chamber pipe tube head export into different positions, and the purpose is located into the tong "pan" type with the pipe in the stomach sinus, combines 0.045 "hard seal wire to support the stomach sinus in the pipe main cavity, because the diastole function yielding of stomach can become two-dimentional flat funnel appearance structure with the original three-dimensional spherical structure exhibition of stomach sinus. Then a hydrophilic guide wire with the diameter of 0.035' is inserted into the auxiliary cavity and led out from an opening at the middle position of the loop type, the guide wire can be directly attached to the gastric fold, the pyloric canal and the duodenal bulb are selected through the flat funnel-shaped antrum, and then the guide tube is pulled to smoothly move towards the deep part of the duodenum.

4) The utility model optimizes the length of the conduit to 150cm, and the design overcomes the problems of insufficient length of the existing conduit (usually 80-110 cm) and unmatched length of the upper digestive tract; the Y-shaped structure of the tube seat is combined, so that the tube seat and the tube head are in fixed directivity, the operation difficulty that the tube head of the catheter is not pointed clearly (the front and the back of the tube head) under X-ray fluoroscopy is reduced, and the catheter can be better controlled to push the catheter to enter the tortuous antrum, pylorus and duodenal bulbus.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the double lumen catheter of the present invention.

FIG. 2 is a schematic cross-sectional view of the dual lumen catheter of the embodiment of FIG. 1.

FIG. 3 is a schematic axial view of the dual lumen catheter of the embodiment of FIG. 1.

Fig. 4 is a simulation diagram of an intubation mode according to an embodiment of the present invention.

Detailed Description

For further understanding of the present invention, preferred embodiments of the present invention will be described below with reference to examples, but it should be understood that these descriptions are only for the purpose of further illustrating the features and advantages of the present invention, and are not intended to limit the claims of the present invention.

Example 1

As shown in fig. 1 to 3, a first embodiment of the present invention is a dual-lumen catheter selectively used for transnasal gastrointestinal tract, which comprises a catheter tube 1 and a catheter hub 2, wherein the catheter hub 2 is connected with the end of the catheter tube 1.

The catheter body 1 is a double-lumen catheter, is made of polyamide materials with supporting stainless steel weaving, and is internally provided with a main lumen tube 11 with a larger inner diameter and an auxiliary lumen tube 12 with a smaller inner diameter.

In the preferred embodiment, the catheter tube 1 has an outer diameter of 7Fr-2.39mm and a length of 150cm, and hydrophilic coatings are attached to the inside and outside of the lumen.

The head end part 13 of the catheter tube body 1 is made of memory shaping woven nylon material with tungsten material marks, the head end part of the main cavity tube 11 is bent and folded back to be in a loop shape, and the head end part of the auxiliary cavity tube 12 is positioned on the inner side of the main cavity tube 11 and is opened at the middle part of the loop shape.

In this embodiment, as a preferred embodiment, the bending and folding portion of the loop-shaped portion of the main lumen tube 11 includes a bending portion 111 in the shape of a circular arc of 180 °, a first extending portion 112 extending from the end of the bending portion 11 and deviating from the catheter tube body, and a second extending portion 113 extending from the end of the first extending portion 112 and deviating from the catheter tube body, and the end of the secondary lumen tube 12 is opened at the transition portion between the bending portion 111 of the main lumen tube and the first extending portion 112.

In the preferred embodiment, the opening of the end of the main lumen 11 is provided with a yellow-white alloy mark 114, and the opening of the end of the auxiliary lumen 12 is provided with a yellow-white alloy mark 121.

In this embodiment, catheter hub 2 is a Y-connector made of vinyl acetate and polyamide material, wherein primary catheter hub 21 is a continuation of the primary catheter shaft and secondary catheter hub 22 is angled at 30 ° to the primary catheter hub.

As a further embodiment, the double lumen catheter in this example is further configured with guide wires matching the main lumen 11 and the auxiliary lumen 12, respectively.

As a preferred embodiment, the inner diameter of the main lumen tube 11 is 1.24mm, fitting a 0.045 "rigid guidewire; the minor lumen tube 12 has an inner diameter of 0.97mm, fitting a 0.035 "hydrophilic guidewire.

Example 2

The second embodiment of the utility model is the first intubation mode of two-chamber pipe in embodiment 1, through the blunt nature tong "pan" type structure of pipe head tip propelling movement forward, when not haring the stomach duodenum, can directly be with the help of the peristaltic action from that the stomach intestines have, with the smooth propelling movement of pipe go into the pylorus and remove to the duodenum depths, accomplish stomach sinus, pylorus and duodenum bulb intubate easy and simple to operate.

Example 3

The third embodiment of the present invention is the second mode of intubation of the double lumen catheter of embodiment 1. Referring to the schematic illustration in fig. 4, for a patient who has difficulty in intubation by the method of example 2, the catheter 1 is looped inside the antrum 100, and the antrum 100 is supported by the combination of the 0.045 "hard guide wire 3 and the main catheter lumen, so that the original three-dimensional spherical structure of the antrum 100 is flattened into a two-dimensional flat funnel-like structure. Because the opening of the auxiliary lumen tube is positioned at the middle part of the loop-shaped part of the main lumen tube, the hydrophilic guide wire 4 with smaller diameter is inserted into the auxiliary lumen tube, extends out from the opening, and the direction of the hydrophilic guide wire points to the far end of the funnel, so the guide wire can be directly attached to the stomach fold, the guide wire is inserted into the pylorus along the funnel direction to enter the duodenal bulb 200, and finally the catheter is inserted under the guide of the guide wire to finish the intubation process.

The above description of the embodiments is only intended to help understand the method of the present invention and its core ideas. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (8)

1. The special double-cavity catheter for the selective transnasal gastrointestinal tract is characterized by comprising a catheter tube body (1) and a catheter seat (2) connected with the tail end of the catheter tube body (1), wherein the catheter tube body (1) is a double-cavity catheter and comprises a main cavity tube (11) with a larger inner diameter and an auxiliary cavity tube (12) with a smaller inner diameter; the head end part (13) of the catheter tube body (1) is made of a memory plastic material, wherein the head end part of the main cavity tube (11) is bent and folded back to be in a loop shape, and the head end part of the auxiliary cavity tube (12) is positioned on the inner side of the main cavity tube (11) and is opened at the middle part of the loop shape.

2. The dual lumen catheter selectively used transnasal gastrointestinal tract according to claim 1, wherein the bending folded portion of the loop-shaped portion of the main lumen tube (11) comprises a curved portion (111) in a circular arc shape, a first extension portion (112) extending from a tip of the curved portion (111) toward the catheter tube, and a second extension portion (113) extending from a tip of the first extension portion (112) away from the catheter tube, and wherein a tip of the sub-lumen tube (12) is opened at a transition of the curved portion (111) and the first extension portion (112).

3. The dual lumen catheter selectively used transnasal gastrointestinal tract according to claim 1, wherein the tip portion (13) of the catheter tube (1) is made of a memory-molded woven nylon material with markings of tungsten material.

4. The dual lumen catheter selectively used transnasal gastrointestinal tract according to claim 1, wherein the end openings of the main lumen tube (11) and the auxiliary lumen tube (12) are provided with alloy marks.

5. The dual-lumen catheter selectively used for transnasal gastrointestinal tract according to claim 1, wherein the catheter tube body (1) has an outer diameter of 7Fr-2.39mm and a length of 130-170 cm, and hydrophilic coatings are attached to the inside and the outside of the tube cavity.

6. The dual lumen catheter selectively used transnasal gastro-intestinal tract according to claim 1, wherein the catheter hub (2) is a Y-connector, the main lumen catheter hub (21) is a continuation of the main lumen catheter shaft, and the angle of the auxiliary lumen catheter hub (22) is 30 ° to the main lumen catheter hub.

7. A dual lumen catheter selectively used transnasal gastrointestinal tract according to any one of claims 1 to 6, wherein the catheter is further provided with guide wires respectively matching with the main lumen tube (11) and the auxiliary lumen tube (12).

8. The dual lumen catheter selectively used transnasal gastrointestinal tract according to claim 7, wherein the main lumen tube (11) has an inner diameter of 1.24mm, fitting a 0.045 "rigid guidewire; the inner diameter of the auxiliary cavity tube (12) is 0.97mm, and a hydrophilic guide wire of 0.035' is adapted.

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