WO2015149539A1

WO2015149539A1 - Multipurpose gastrointestinal conformal tunnel and operation method

Info

Publication number: WO2015149539A1
Application number: PCT/CN2014/093949
Authority: WO
Inventors: 李振平; 李宁; 铁炜炜; 雷桂梅; 吴俊兰
Original assignee: 李振平; 李宁
Priority date: 2014-03-31
Filing date: 2014-12-16
Publication date: 2015-10-08
Also published as: CN104000734A; CN104000734B

Abstract

A multipurpose gastrointestinal conformal tunnel, comprising a hollow catheter (9) for guiding when inserted into a gastrointestinal tract. An expandable membrane channel (7) is connected to the catheter (9); the end of the membrane channel (7) toward the insertion end of the catheter (9) is fixed to the catheter (9) and is provided with at least one outlet (14); and the end of the membrane channel (7) toward the trailing end of the catheter (9) is fixed to the catheter (9) via an inlet expander (6), the end forming a membrane channel inlet (17). The inlet expander (6) is an inflatable elastomer or memory alloy; in the contracted state, the inlet expander (6) is in very close proximity to the wall of the catheter (9), and after expansion, expands the membrane channel (7) to form an inlet (17). After the membrane channel (7) is inserted into a gastrointestinal tract along with the catheter (9), the inlet expander (6) expands the inlet (17) of the membrane channel (17), and fixes the inlet expander (6) in a proper position so that the masticated food from the oral cavity can come into the inlet (17) and out of the outlet (14) of the membrane channel (7).

Description

Multi-purpose gastrointestinal conformal tunnel and operation method

Technical field

The invention relates to the field of medical instruments, in particular to a multi-purpose gastrointestinal conformal tunnel and a method of operation.

Background technique

There are various types of nutrient tubes, drainage tubes, drug delivery tubes, and compression vessels that can be inserted into the gastrointestinal tract that are produced and sold at home and abroad. Although various pipelines have their own unique advantages and scope of application, there are also some common shortcomings. The outer diameter of various pipes is mostly 5-7mm, and the inner diameter is rarely more than 5mm. As the enteral nutrition pipeline, only the special expensive and rare juice nutrient solution can be dripped, which is easy to block.

Although some nutrient tubes have other functions, such as the ability to simultaneously fill the oxygen pipeline, or the drainage of hemorrhage, effusion, and gas accumulation in the digestive tract, there is still a phenomenon of tube plugging, and various nutrients available on the market. The tube only cares about the nutrition of the patient and does not consider how to expel the patient's need for excess food.

Even though a variety of functions have been added to the nutrition tube, the various tubes currently in use lack the function of responding and exerting the function of the human digestive tract. If the patient can't eat orally, he can't play the physiological function of chewing, which will lead to the negative impact of digestive digestion in the first stage.

After the insertion of the nutrition tube, the gastrointestinal motility cannot be accepted in the gastrointestinal cavity, and there is a drawback of abandoning the physiological function of the gastrointestinal part.

Summary of the invention

The object of the present invention is to provide a multi-purpose gastrointestinal conformal tunnel and method of operation, the catheter With an expanded membrane channel, after insertion through the nasopharyngeal cavity, the membrane channel can be expanded and adapted to the shape and size of the gastrointestinal tract, so that the physiological function of chewing can be exerted, and the food is chewed from the esophagus through the membrane channel. The right location.

The invention solves the defects that the existing nutrition tube can not bear the gastrointestinal motility after insertion into the gastrointestinal tract, and provides a multi-purpose gastrointestinal conformal tunnel, which expands the membrane channel of the tunnel and fits the gastrointestinal wall, Inheriting gastrointestinal motility.

The technical solution adopted by the present invention to solve the technical problem thereof is: a multi-purpose gastrointestinal conformal tunnel comprising a hollow catheter guided when inserted into the gastrointestinal lumen, the catheter being connected with an expandable membrane channel, and the membrane channel facing The end of the insertion end of the catheter is fixed to the catheter, and at least one outlet is opened at the end, and the end of the membrane channel toward the end of the catheter is fixed to the catheter through the inlet dilator, the end forming a membrane channel inlet; the inlet dilator is Inflatable elastomer or memory alloy body, the inlet dilator is in close contact with the catheter wall when it is contracted, and the inlet dilator expands to open the membrane channel and form an inlet. The catheter guides when the tunnel is inserted into the gastrointestinal tract, and simultaneously introduces the membrane channel on the catheter into the gastrointestinal tract, thereby solving the technical problem of how the membrane channel is softly inserted into the gastrointestinal tract, and the membrane channel is inserted. After the gastrointestinal tract, the entrance of the membrane channel is opened by the action of the inlet dilator. As long as the inlet dilator is fixed in place, the food chewed through the mouth can enter from the inlet and exit from the membrane channel. Discharge, reasonable determination of the position of the exit of the membrane channel can transport the food to a suitable position, while supplementing the nutrition, can also play the physiological function of chewing, the membrane channel is thin, soft, and expands through the inlet dilator to form a channel, this The channel will conform to the gastrointestinal wall, thereby inheriting the gastrointestinal motility, especially the film channel can cover the wound or the part that should not be in contact with the food, thereby playing a protective role; The tensioner is in close contact with the outer wall of the catheter before expansion, reducing the resistance when the catheter is inserted; the inlet expander is an inflatable elastomer, which is expanded by inflation, and if it is a memory alloy body, it is expanded by temperature change; the membrane channel is free. The size of the full diameter is 2.0cm-3.5cm. When no food passes, the film passage is wilting. When the food passes, the food will open the film passage to form a food flow passage; the outlet of the film passage may be a full-diameter open structure. Any food can be filled and formed; if necessary, the outlet of the membrane channel can be opened by adding an outlet expander.

Preferably, the outlet end of the film passage is connected with an outlet expander, the outlet expander is an inflatable elastomer or a memory alloy body, the outlet expander is in close contact with the conduit wall when it is contracted, and the outlet expander expands to open the film passage to form an outlet. . With the exit of the membrane channel, it is convenient to establish the size of the membrane channel outlet.

Preferably, the inlet expander and the outlet expander are both inflatable elastomers, the inlet expander and the outlet expander have an inflation duct, the inflation port of the inflation duct is connected to the duct wall, the duct wall is provided with an intake pipe, and the intake pipe end The connecting valve, the inlet expander and the outlet expander use the same intake pipe or use separate intake pipes.

Preferably, the entrance of the membrane channel is provided with an anti-reflux valve, the anti-reflux valve is tapered, and the tapered small-diameter end faces the outlet end of the membrane channel. The small diameter end of the cone can be cut into a three-lobed flap to facilitate food passage.

Preferably, the insertion end of the catheter is fixed with a transparent capsule, the transparent capsule enclosing the insertion end of the catheter; and the hollow interior of the catheter is inserted with a withdrawable metal guide wire as a catheter insertion support. The transparent capsule can play a guiding role when the catheter is inserted. The outer circumference of the transparent capsule is larger than the outer diameter when the tunnel is tightened, so that the space opened by the transparent capsule when advancing is larger than the outer diameter of the tunnel, facilitating tunnel insertion.

Preferably, the transparent capsule is provided with an optical system or a signal source device of the imaging system, and a wire is embedded in the wall of the catheter, the wire is connected to the signal source device, and a signal output terminal is connected to the wire at the tail end of the catheter. The signal source device may be an illuminant, a sensor, a camera, a permanent magnet, an electronic component, or the like.

Preferably, a plurality of side holes are provided at suitable locations on the wall of the conduit, the side holes penetrating the wall of the conduit. Through the side hole and the gastrointestinal cavity, the pressure in the gastrointestinal cavity can be measured through the catheter, and the drug can be injected or the gastrointestinal fluid sample can be taken.

Preferably, the tail end of the catheter is marked with a scale along the axial direction of the catheter, the scale starting from the inlet dilator for viewing the position at which the inlet dilator is inserted. The distance of the inlet dilator from the outer nostril is determined by the scale to determine the position at which the inlet dilator arrives.

A method for operating a multi-purpose gastrointestinal conformal tunnel includes the following steps: (1) determining the outer diameter and length dimension of the tunnel according to the characteristics of the patient, and selecting a suitable tunnel;

(2) inserting the insertion end of the catheter from the patient's nasopharyngeal cavity, determining the depth of insertion as required, and determining the position of the inlet dilator;

(3) Expanding the entrance of the membrane passage from the external control inlet expander, the outlet of the membrane passage is freely open or the outlet expander is expanded to open the outlet of the membrane passage.

Preferably, the type of signal source device in the transparent capsule at the insertion end of the catheter is also considered when selecting the tunnel; the metal guide wire is inserted into the hollow of the catheter when the catheter is inserted into the gastrointestinal tract, and the metal guide wire is withdrawn after the catheter is inserted.

The beneficial effects of the invention are: the membrane channel is inserted into the gastrointestinal cavity with the catheter, and the entrance of the membrane channel is opened by the action of the inlet dilator, the membrane channel is sufficiently large, the oral cavity The chewed food easily enters the tunnel from the entrance of the membrane passage and is discharged from the outlet of the membrane passage. By fixing the inlet dilator to a suitable position and properly determining the position of the outlet of the membrane passage, the food can be transported to a suitable position. While supplementing nutrition, it also exerts the physiological function of chewing; because conformal conformity with the gastrointestinal wall can inherit the gastrointestinal motility, promote the food to move forward, avoid blocking the tube; by adjusting the length of the tunnel, it can be used for both energy and platoon Can, expand the use.

DRAWINGS

Figure 1 is a schematic view showing the structure of the present invention;

Figure 2 is a schematic exploded view of the present invention;

Figure 3 is a schematic view showing a second expansion of the present invention;

Figure 4 is a third schematic view of the expansion of the present invention;

Figure 5 is a plan view of the present invention;

Figure 6 is a second plan view of the present invention;

In the figure: 1, head, 2, output terminal, 3, metal guide wire, 4, valve, 5, intake pipe, 6, inlet expander, 7, film passage, 8, side hole, 9, conduit, 10, Wire, 11, transparent capsule, 12, signal source device, 13, anti-reflux valve, 14, outlet, 15, outlet dilator, 16, intermediate dilator, 17, inlet.

detailed description

The technical solutions of the present invention will be further specifically described below through specific embodiments and in conjunction with the accompanying drawings.

Example: A multi-purpose gastrointestinal conformal tunnel (see Figure 2 of Figure 2), including A catheter 9 made of a medical polymer material is connected to the wall of the catheter with an expandable membrane channel 7.

A transparent capsule 11 is fixed to the front end of the catheter. The outer circumference of the transparent capsule is larger than the outer diameter when the tunnel is tightened, and the transparent capsule closes the front end of the catheter. A signal source device 12 of an optical system or an imaging system is disposed in the transparent capsule, and a wire 10 is embedded in the wall of the catheter. The wire is connected to the signal source device, and the signal output terminal 2 is connected to the wire at the tail end of the catheter. By connecting the signal receiving device to the output terminal, the signal from the signal source device can be received. A plurality of side holes 8 are provided in the side wall of the duct, the side holes are arranged along the axial direction of the duct, or the side holes are offset from each other.

An inlet dilator 6 is secured to the distal end of the catheter, the inlet dilator is a cylindrical or funnel-shaped inflatable elastomer, and the inlet dilator is surrounded by an inflating conduit that communicates with each other. The inlet dilator is secured to the outer wall of the catheter with a fixed position spaced 180[deg.] (see Figure 5) and the inlet dilator is in close contact with the outer wall of the catheter when not inflated. The inlet 17 of the membrane channel is fixed to the inlet dilator, the membrane channel being fixed towards the catheter at one end of the transparent capsule, at which two outlets 14 are provided. An anti-reflux valve 13 is provided at the entrance of the membrane channel, the anti-reflux valve is tapered, the tapered small-diameter end faces the outlet end of the membrane channel, and the small-diameter end is cut into a trilobate (not shown).

The inflation port of the inflation duct of the inlet dilator is connected to the wall of the duct, and the duct wall is provided with an axial intake pipe 5, and the outer end of the intake pipe is connected with the valve 4. The end of the catheter is marked with a scale along the axial direction of the catheter, starting from the inlet dilator.

Operation method of multi-purpose gastrointestinal conformal tunnel: (1) Determine the outer diameter and length of the tunnel according to the characteristics of the patient, select a suitable tunnel, and consider the signal inside the transparent capsule Type of source device, insert metal wire 3 in the catheter;

(2) inserting the transparent capsule end of the catheter from the patient's nasopharyngeal cavity, determining the depth of insertion as required, and determining the position of the inlet dilator, and then withdrawing the metal guidewire;

(3) The valve of the intake pipe is connected, and the inlet expander 6 is externally controlled to expand the inlet 17 of the film passage.

Example 2: A multi-purpose gastrointestinal conformal tunnel differs from Example 1 in that the outlet end of the membrane passage is connected to an outlet expander 15, the outlet expander is an inflatable elastomer, and the outlet expander is in a contracted state Adjacent to the wall of the conduit, the outlet expander expands to open the exit end of the membrane passage, and the inlet and outlet expanders use their respective inlet tubes. One end of the membrane channel to which the outlet expander is attached is the outlet 14 of the membrane channel.

The valve of the intake pipe is connected, and the inlet expander 6 is externally controlled to expand the inlet 17 of the membrane passage, while controlling the outlet expander to expand the outlet 14 of the membrane passage (see Fig. 3). The rest of the structure is referred to in Example 1.

Embodiment 3: A multi-purpose gastrointestinal conformal tunnel differs from Embodiment 2 in that a middle portion of the membrane passage is connected with a plurality of intermediate dilators 16, the intermediate dilator is a ring-shaped annular structure, an intermediate dilator and The inlet dilator and the outlet dilator share the same intake manifold of the conduit (see Figure 4).

The membrane channel enters the gastrointestinal cavity, and when the valve is inflated, it is subjected to the pressure of the gastrointestinal wall. Under the same pressure, the membrane channel forms a shape adapted to the gastrointestinal cavity, and the membrane channel conforms to the gastrointestinal wall. The rest of the structure is referred to implementation 2.

Example 4: A multi-purpose gastrointestinal conformal tunnel with a catheter in the membrane channel and a catheter secured to the inner wall of the membrane channel. Inlet dilator, outlet dilator or intermediate dilator Also loop the catheter (see Figure 6). The rest of the structure is referred to the above embodiment.

Example 5: A multi-purpose gastrointestinal conformal tunnel differs from Example 1 in that the inlet end of the membrane channel is provided with an inlet expander 6, which is a memory alloy body that is contracted by a temperature-regulating dilator or Open, the inlet dilator is in close contact with the wall of the catheter when it is contracted. After the tunnel is placed in the tunnel, the memory alloy body expander expands under the action of the temperature of the body and opens the entrance of the membrane channel. The food chewed by the mouth enters through the entrance. The tunnel, naturally filling the expanded membrane channel, exits from the open end of the full diameter.

The embodiments described above are only a few preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Other variations and modifications are possible without departing from the scope of the invention.

Claims

A multi-purpose gastrointestinal conformal tunnel comprising a hollow catheter (9) guided for insertion into a gastrointestinal lumen, characterized in that an expandable membrane channel (7) is attached to the catheter, the membrane channel being oriented toward the end of the catheter insertion end The portion is fixed to the conduit, and at least one outlet (14) is opened at the end, and the end of the film passage toward the end of the conduit is fixed to the conduit through the inlet expander (6), and the end forms a membrane passage inlet (17) The inlet dilator is an inflatable elastomer or memory alloy body, the inlet dilator is in close contact with the catheter wall when it is contracted, and the inlet dilator expands to open the membrane channel and form an inlet.
The multi-purpose gastrointestinal conformal tunnel of claim 1 wherein the outlet end of the membrane passage is connected to an outlet expander (15), the outlet expander is an inflatable elastomer or a memory alloy body, and the outlet expander is contracted. When the shape is close to the wall of the catheter, the outlet expander expands to open the membrane channel to form an outlet.
The multi-purpose gastrointestinal conformal tunnel of claim 2 wherein the inlet dilator and the outlet dilator are both inflatable elastomers, the inlet dilator and the outlet dilator each having an inflation conduit, the inflation port of the inflation conduit To the wall of the duct, an air intake pipe (5) is opened on the wall of the duct, the end of the intake pipe is connected to the valve (4), and the inlet diverter and the outlet dilator are used by the same intake pipe or respectively using respective intake pipes.
A multi-purpose gastrointestinal conformal tunnel according to claim 1 or 2 or 3, wherein the entrance of the membrane channel is provided with an anti-reflux valve (13), the anti-reflux valve is tapered, and the tapered small-diameter end Towards the outlet end of the membrane channel.
A multi-purpose gastrointestinal conformal tunnel according to claim 1 or 2 or 3, wherein the insertion end of the catheter is fixed with a transparent capsule (11), and the transparent capsule encloses the insertion of the catheter The inlet end; a hollow metal guide wire (3) is inserted into the hollow portion of the catheter as a catheter insertion support.
The multi-purpose gastrointestinal conformal tunnel according to claim 5, characterized in that the transparent capsule is provided with an optical system or a signal source device (12) of the imaging system, in which the wire (10) is embedded in the wall of the catheter, the wire and the wire The signal source device is connected, and a signal output terminal (2) is connected to the wire at the end of the catheter.
Multi-purpose gastrointestinal conformal tunnel according to claim 1 or 2 or 3, characterized in that a plurality of side holes (8) are provided at suitable locations on the wall of the conduit, the side holes penetrating the wall of the conduit.
A multi-purpose gastrointestinal conformal tunnel according to claim 1 or 2 or 3, wherein the tail end of the catheter is marked with a scale along the axial direction of the catheter, the scale starting from the inlet dilator for viewing the inlet expander The location of the insertion.
A method for operating a multi-purpose gastrointestinal conformal tunnel according to any one of claims 1-8, comprising the steps of: (1) determining an outer diameter and a length dimension of the tunnel according to characteristics of the patient, and selecting a suitable tunnel;

(2) inserting the insertion end of the catheter from the patient's nasopharyngeal cavity, determining the depth of insertion as required, and determining the position of the inlet dilator;

(3) Expanding the entrance of the membrane passage from the external control inlet expander, the outlet of the membrane passage is freely open or the outlet expander is expanded to open the outlet of the membrane passage.
The method of operating a multi-purpose gastrointestinal conformal tunnel according to claim 9, wherein the type of the signal source device in the transparent capsule at the insertion end of the catheter is also considered when selecting the tunnel; and the catheter is hollow when the catheter is inserted into the gastrointestinal tract Insert metal wire, tunnel placed When properly, pull out the metal guide wire.