JP2002143315A - Tube with reinforcement for medical treatment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tube capable of keeping the strength obtained by a reinforcement, and being indwelled for a long time, thinned and easily manufactured at a low cost. SOLUTION: In this tube with the reinforcement for medical treatment composed of a plastic tube reinforced by the reinforcement, at least one passage formed by leaving the reinforcement on a tube wall at a tip part of the tube without cutting out, and removing only a plastic resin of the reinforcement body part, is formed on the tube wall of the tip part of the tube. In a figure 1, the resin tube 1 has the reinforcement 2, and the reinforcement 2 has the shape of a blade. A dimension of a network 3 is preferably 0.01 mm2-0.36 mm2 in a viewpoint of an area. The passage 51 is annularly formed in the network 3 of the blade-shaped reinforcement 2 of the tip part I of the tube 1 with the reinforcement, and can be worked with a small cutter such as a punch.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical tube having a reinforcing member such as an angiographic catheter, various drainage tubes, a bronchial tube, and a urination tube (hereinafter referred to as a medical tube provided with a reinforcing member). In the state in which the medical tube itself is in contact with the inside of the tube wall or inside the tube wall, the tube has a reinforcing body, and at least a part of the plastic resin of the reinforcing body applying portion is removed, and a passage (through hole) is provided in the tube tube wall. A medical tube provided with a reinforcing member.

[0002]

2. Description of the Related Art Conventionally, a medical tube provided with a reinforcing member, particularly a catheter such as an angiographic catheter, is used for angiography.
After advancing through the blood vessel along the guide wire and reaching the trunk, the guide wire is withdrawn, and angiography is performed while rotating or pushing the tip of the catheter. Therefore, in such a medical tube such as a catheter, a passage (through hole) for ejecting a contrast agent or a drug solution (hereinafter, referred to as a contrast agent) is provided at a distal end portion thereof, and torque transmission and pushing force of the catheter are provided. -A catheter made of a material having excellent kink resistance and the like is used.
Regardless of the type of drainage tube, a target body cavity (bile duct, gallbladder,
To the kidney, bladder, etc.)
The tube-inserted portion outside the tube body is bent and fixed to the body surface using an adhesive tape, a fixing plate or the like. This fixing is performed using an adhesive tape, a fixing board or the like. After that, it is left for a long period of time (if it is long, it may be attached unit), and the body fluid is drained.

[0003] Such a drainage tube is fixed to the body surface as described above, and is inserted and arranged in a state where there is a portion inserted into the body and a portion exposed outside the body. When the organ moves due to breathing or the like, the body-inserted portion moves with the organ, but the extracorporeal portion is hardly moved from the fixed site because it is fixed to the body surface. Therefore, as a result of the movement of the insertion portion in the body, a difference in movement occurs between the two, and a portion near the boundary between the insertion portion and the extracorporeal portion of the drainage tube is bent or pulled.
The drainage tube is continuously loaded by respiration, and the medical tube may break during placement (use). Therefore, a medical tube such as a drainage tube is provided with a reinforcing member so as to have durability against the load and to be used for a long time without breaking the tube.

[0004] In a conventional medical tube provided with a reinforcing member, as shown in FIG. 7, a portion 3 of the distal end portion I of the tube 1 having no reinforcing member 2 is provided, and a part of the plastic resin is replaced by a plastic resin. It is known that a passage 5 is provided in a tube tube wall by removing with a cutter such as a punch. When the reinforcing member is provided on the entire tube, the passage 5 is provided in the tube tube wall by removing the plastic resin with a cutting tool such as a punch together with the reinforcing member (not shown).

[0005]

However, in the conventional medical tube provided with a reinforcing member, the above-mentioned tube is provided with a portion having no reinforcing member at the front end at the time of manufacture. However, there is a problem that the tube is crushed or the like, so that the tube cannot be placed for a long period of time, and furthermore, there is a problem that the diameter of the tube cannot be reduced due to its low strength. In addition, there is a problem that the production becomes complicated and the cost is not economical. In the latter tube, since the reinforcing member is made of an alloy, glass fiber, carbon fiber or the like, its rigidity is generally higher than that of the plastic resin. Therefore, it is extremely difficult to remove the reinforcing member from the plastic resin. As a result, the reinforcing body is cut off together with the plastic resin, and at this time, a part of the reinforcing body may remain without being cut off. The reinforcing body which remains without being cut off is protruded into the plastic removing portion and has a barb-like state, which has a problem that it may cause damage to the human body or cause a malfunction in a medical device used in combination. Also, when removing the plastic resin and the reinforcing body with a blade, etc., the sharpness of the blade immediately deteriorates because the reinforcing body is removed, and therefore, the polishing etc. for maintaining the sharpness of the blade increases, and the work efficiency is increased. There is a problem that it is bad and not economical.

Accordingly, the present inventors have conducted various studies on the problems that occur when the passage is formed as described above. As a result, by removing only the resin of the tube without removing the reinforcing member of the passage portion, It has been found that the problem is solved. Therefore, the first problem to be solved by the present invention is to provide a reinforcing member which retains strength by reinforcement, enables long-term indwelling, enables not only to reduce the diameter of the tube, but also facilitates production and is economical. A medical tube can be provided. Further, the second problem to be solved by the present invention is to prevent the cause of human body damage and the malfunction of the medical device used in combination, maintain the strength by reinforcement, enable long-term indwelling, and reduce the diameter of the tube. It is possible to provide a medical tube provided with a reinforcing body, which is not only possible but also simple and economical to manufacture.

[0007]

The present invention is achieved by each of the following inventions.

[Claim 1] In a medical tube provided with a reinforcing member made of a plastic tube reinforced with a reinforcing member, a reinforcing member on a tube wall at a distal end portion of the tube is left without being cut, and A medical tube provided with a reinforcing member, wherein at least one passage from which only a plastic resin is removed is provided in the distal end wall. [2] The medical tube provided with a reinforcing member according to [1], wherein the reinforcing member is a blade-like reinforcing member. [3] The medical tube with a reinforcing member according to [1], wherein the reinforcing member is a spiral reinforcing member. [4] The medical tube provided with a reinforcing member according to any one of [1] to [3], wherein the passage has a circular shape. [5] The medical tube provided with a reinforcing member according to any one of [1] to [3], wherein the passage has a single shape in the longitudinal direction of the tube. [6] The medical tube provided with a reinforcing member according to any one of [1] to [3], wherein the passage has a spiral shape. [Claim 7] The medical tube provided with a reinforcing member according to any one of claims 1 to 3, wherein the passage has a spiral shape and its direction is arranged to face the spiral reinforcing member. [8] The reinforcing member is made of at least one selected from alloy wire, shape memory alloy, pseudoelastic alloy, glass fiber, amorphous alloy, ionomer or carbon fiber. 8. The medical tube provided with a reinforcing body according to any one of 7 above. [9] The medical tube provided with a reinforcing member according to any one of [1] to [8], wherein the resin at the distal end is made of a resin that is more flexible than the resin of the main body.

[0009] The invention according to claim 1 relates to a medical tube provided with a reinforcing member, which comprises a plastic tube reinforced with a reinforcing member. At least one passage which is left without cutting and from which only the plastic resin of the reinforcing member is removed is provided in the distal end tube wall, whereby the reinforcing member is cut in the passage. Since only the plastic resin of the reinforcing member is removed, the reinforcement by the reinforcing member is maintained, so that the diameter of the tube can be reduced, and the tube can be placed for a long period of time. The present invention has an excellent effect that not only can a medical device used in combination be prevented from being defective, but also it can be easily manufactured and is economical. The invention relating to the reinforcing body-provided medical tube according to claim 2 is characterized in that the reinforcing body is a braided reinforcing body, whereby the tube is effectively reinforced, and the tube can be reduced in diameter. While long term detention is possible,
The present invention has an excellent effect that not only can the cause of injury to the human body and malfunctions of a medical device used in combination be prevented, but also the manufacturing can be simplified and the cost can be reduced. The invention relating to the medical tube with a reinforcing member according to the third aspect has the same effect as the medical tube with the reinforcing member according to the first aspect, because the reinforcing member is a spiral reinforcing member. is there.

[0010] Each of the inventions according to claims 4 to 7 has the effects described in the claims, but the invention relating to the medical tube provided with a reinforcing member according to the fourth invention has a passage. Due to the circular shape, the passage can be provided without lowering the reinforcement. In the invention according to the fifth aspect of the present invention, the passage is formed in the longitudinal direction of the tube, so that the passage can be provided which can maintain the reinforcement and supply a large amount of liquid. Furthermore, the invention according to the sixth aspect of the present invention provides the same effect as the sixth aspect, since the passage has a spiral shape. Furthermore, the invention relating to the medical tube provided with a reinforcing body according to claim 7 is characterized in that the passage has a spiral shape and its direction is arranged so as to face the spiral reinforcing body. The reinforcement is superior to that of the invention.

[0011] The invention according to claim 8 relates to a medical tube provided with a reinforcing member, wherein the reinforcing member is made of an alloy thin wire, a shape memory alloy,
It is characterized by comprising at least one selected from a pseudoelastic alloy, a glass fiber, an amorphous alloy, an ionomer or a carbon-based fiber, whereby the effect of the invention according to any one of claims 1 to 7 is obtained. Performs, but more sufficient reinforcement is obtained. In the invention according to the ninth aspect of the present invention, the resin at the distal end is made of a resin that is more flexible than the resin of the main body. Stimulation of the human body tissue when the tip comes into contact with human tissues such as blood vessels, biliary tract, respiratory tract and urinary tract is reduced because the tip is easily deformed and buffered. As a result, the medical tube with the reinforcing member hardly damages human tissue during operation, and the safety of the tube is further enhanced.

[0012]

Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited thereto.

According to the first aspect of the present invention, in a medical tube with a reinforcing member made of a plastic tube reinforced with a reinforcing member, the reinforcing member on the tube wall at the distal end of the tube is left without being cut, and It is characterized by providing at least one passage in the distal end tube wall where only the plastic resin of the reinforcing portion is removed, specifically,
It comprises a tip I and a body II and is shown in FIGS. FIG. 1 is a perspective view showing a reinforcing member-provided medical tube of the present invention. In FIG. 1, a resin tube 1 has a reinforcing member 2, and the reinforcing member 2 has a blade shape. The size of the mesh 3, in terms of the area, preferably 0.01mm ² ~0.36mm ^2.

A passage 51 is formed in the mesh 3 of the blade-shaped reinforcement 2 at the distal end portion I of the medical tube 1 provided with the reinforcement.
And can be processed with a small blade such as a punch. Therefore, the wire 4 is provided so as not to be substantially exposed. The number of the circular passages 51 varies depending on the size of the passage, but at least one or more is provided. Preferably 5 to 60, more preferably 15
５０50, and may be provided arbitrarily or irregularly. Preferably, the contrast agent or the like is uniformly ejected, and therefore, it is preferable to provide the agent regularly. As described above, in the present invention, since the reinforcing body 2 is not removed by the blade, the blade edge is not damaged, and continuous and stable processing (sharpness) can be performed. Moreover, you may process with a laser beam. In addition, even if the reinforcing member has a spiral shape, a circular hole can be provided as a passage in a portion without the reinforcing member similarly to FIG. 1 (not shown).

FIG. 2 is a perspective view showing another embodiment in which the reinforcing member has a blade shape in the medical tube provided with the reinforcing member of the present invention. In FIG. 2, the passage is a blade-like reinforcement 2 at the distal end portion I of the medical tube 1 with the reinforcement.
In the portion having the shape, a tube 52 is formed in the longitudinal direction of the tube, and at least one passage is provided in the tube wall at the distal end portion, while leaving the reinforcing body in the tube 52 and removing only the plastic resin. . Therefore, the mesh wire 4 of the reinforcing member 2 remains exposed in the elongated hole of the single-shaped shape 52, and holds the reinforcement of the tube 1. By forming the passages in the form of a single line 52 in this manner, a large amount of contrast agent can be ejected together with the reinforcement of the tube, so that the number of passages for ejecting the contrast agent and the like can be reduced, and the processing efficiency is improved. Can be done.

FIG. 3 is a perspective view showing still another embodiment of the medical tube provided with a reinforcing member according to the present invention. In FIG. 3, the passage is formed by the distal end portion I of the medical tube 1 with the reinforcing member.
Spiral shape 5
At least one passage is provided in the distal end tube wall, while leaving the reinforcing member 4 in a single-strip shape of 3 and removing only the plastic resin. Therefore, the mesh wire 4 of the reinforcing body 2 remains exposed and remains in the single-row shape formed of the spiral shape 53, and holds the reinforcement of the tube 1. By forming the passages in the form of the single stripe 53 composed of the spiral shape 53, it is not necessary to provide a plurality of passages for ejecting a contrast agent and the like while reinforcing the tube, and the processing efficiency can be improved.

FIG. 4 is a perspective view showing another embodiment of the medical tube provided with a reinforcing member according to the present invention, in which the reinforcing member has a spiral shape. In FIG. 4, the passage is formed as a single line (or a long hole) 52 in the longitudinal direction of the tube at a portion of the distal end portion I of the medical tube 1 provided with the reinforcing member having the spiral reinforcing member 6. Leaving the reinforcement inside
In addition, at least one passage from which only the plastic resin is removed is provided in the distal end wall. Therefore, the spiral wire 4 is left exposed in the long hole of the single wire 52, and the reinforcement of the tube 1 is maintained.
By forming the passages in the form of a single line 52 in this manner, a large amount of contrast agent can be ejected together with the reinforcement of the tube, so that the number of passages for ejecting the contrast agent and the like can be reduced, and the processing efficiency is improved. Can be done.

FIG. 5 is a perspective view showing another embodiment of a spiral-shaped medical tube provided with a reinforcing member of the present invention. In FIG. 5, in the portion of the distal end portion I of the medical tube 1 provided with the reinforcing member 1 having the spiral reinforcing member 6, as the passage, the single reinforcing member 6 composed of the spiral 53 is left, and only the plastic resin is used. At least one removed passage is provided in the distal end wall. Therefore, the wire of the reinforcing member 6 is left exposed in the single-row shape formed of the spiral shape 53, and the reinforcement of the tube 1 is maintained. By forming the passage in the form of a single line 53 composed of the spiral shape 53, the tube can be reinforced and a large amount of the contrast agent can be ejected. Therefore, it is not necessary to provide a plurality of passages for ejecting the contrast agent and the like. Efficiency can be improved.

FIG. 6 is a perspective view showing still another embodiment of a spiral-shaped medical tube provided with a reinforcing member according to the present invention. In FIG. 6, the passage is a spiral reinforcing member 6 at the distal end portion I of the reinforcing member-provided medical tube 1.
Has a spiral single-shaped portion opposite to the spiral shape 53, the reinforcing body 6 in the spiral shape is left as it is, and the passage 53 from which only the plastic resin is removed is formed in the distal end tube wall. At least one is provided. Therefore, the wire of the reinforcing member 6 is left exposed in the single spiral shape having the reverse spiral shape 53, and the reinforcement of the tube 1 is maintained. In this way, the passage 53 is formed by the single spiral 53 having the spiral shape 53 of the opposite direction.
As a result, the tube is retained without being affected by the reinforcement of the tube, and a large amount of the contrast agent can be jetted out.
There is no need to provide a plurality of passages for ejecting a contrast agent or the like, and processing efficiency can be improved.

In the present invention, the reinforcing member is made of at least one selected from alloy wire, shape memory alloy, pseudoelastic alloy, glass fiber, amorphous alloy, ionomer or carbon fiber. And a general titanium alloy are preferable. Examples of the shape memory alloy or the pseudoelastic alloy include Nitinol (trade name). These alloys, glass fibers, ionomers, or carbon fibers have sufficient rigidity as a plastic reinforcement, and tubes reinforced with these are preferably used as medical tubes. Further, the plastic resin of the distal end portion I and the body portion II is not particularly limited, but the resin of the distal end portion I and the resin of the main body portion II can be different. It is preferable to be made of a resin that is more flexible than the resin of II. Thus, when the distal end portion I contacts the human body tissue such as a blood vessel, a biliary tract, an airway or a urinary tract when operating the medical tube with the reinforcing member, the stimulation to the human body tissue is caused by the distal end. Since the part is easily deformed and buffered, the size is reduced. As a result, the medical tube provided with the reinforcing member hardly damages human tissue during operation, and the safety of the tube is further enhanced. Tip I
And the resin of the body part II are bonded with an adhesive,
It is bonded by solvent bonding, heat melting or the like. Also the tip I
Is used by selecting at least one of polyolefin, polyester, silicone resin, polyurethane, fluorine resin, vinyl chloride resin, these elastomer type resins and synthetic rubber. These resins have more flexibility than the resin of the main body II. The resin of the main body II is made of at least one of polyolefin, polyester, polyurethane, polyamide, fluorine resin, vinyl chloride resin, polyimide, and the like, and these resins have lower flexibility than the resin of the main body I. Even when the resins used for the main body portion I and the main body portion II are the same resin, the flexibility can be adjusted by adding a degree of polymerization, a crosslinking agent, and the like.

[0021]

According to the first aspect of the present invention, there is provided a medical tube provided with a reinforcing member, comprising a plastic tube reinforced with a reinforcing member, wherein the tube wall at the distal end of the tube is reinforced. By leaving at least one passage in the distal end tube wall, leaving the body without cutting, and removing only the plastic resin of the reinforcing body portion,
Reinforcement by the reinforcement body is retained, so the tube can be reduced in diameter and can be placed for a long period of time, and it can not only prevent the cause of human body damage and trouble with medical equipment used together, but also simplify manufacturing It has an excellent effect of being economical. The invention relating to the reinforcing body-provided medical tube according to claim 2 is characterized in that the reinforcing body is a braided reinforcing body, whereby the tube is effectively reinforced, and the tube can be reduced in diameter. In addition to being capable of long-term indwelling, it not only prevents the cause of human body damage and malfunctions of the medical device used in combination, but also has an excellent effect of being easy to manufacture and economical. The invention relating to the medical tube with a reinforcing member according to the third aspect has the same effect as the medical tube with the reinforcing member according to the first aspect, because the reinforcing member is a spiral reinforcing member. is there.

Each of the inventions according to claims 4 to 7 has the effects described in the claims. Further, the invention according to the medical tube with the reinforcing member according to the invention has a passage having a passage. Due to the circular shape, the passage can be provided without lowering the reinforcement. In the invention according to the fifth aspect of the present invention, the passage is formed in the longitudinal direction of the tube, so that the passage can be provided which can maintain the reinforcement and supply a large amount of liquid. Furthermore, the invention according to the sixth aspect of the present invention provides the same effect as the sixth aspect, since the passage has a spiral shape. Furthermore, the invention relating to the medical tube provided with a reinforcing body according to claim 7 is characterized in that the passage has a spiral shape and its direction is arranged so as to face the spiral reinforcing body. The reinforcement is superior to that of the invention.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a medical tube provided with a reinforcing body of the present invention.

FIG. 2 is a medical tube provided with a reinforcing body according to the present invention;
It is a perspective view showing another embodiment when a reinforcement is a blade shape.

FIG. 3 is a perspective view showing another embodiment of the medical tube provided with a reinforcing member of the present invention.

FIG. 4 is a medical tube provided with a reinforcing body according to the present invention;
It is a perspective view showing another embodiment when a reinforcement is a spiral type.

FIG. 5 is a medical tube provided with a reinforcing body according to the present invention;
It is a perspective view which shows another embodiment in the case of a spiral shape.

FIG. 6 is a medical tube provided with a reinforcing body according to the present invention;
It is a perspective view which shows another embodiment in the case of a spiral shape.

FIG. 7 is a cross-sectional view and a side view showing a conventional medical tube provided with a reinforcing member.

[Description of Signs] 1 Reinforcement-provided medical tube 7 Spiral wire 2 Reinforcement 51 Circular passage (circular hole) 3 Resin 52 Single-line passage (elongated hole) 4 Reinforcement wire 53 Spiral passage 5 Passage I Tip 6 Spiral Reinforcement II Body

Claims (9)

[Claims] In a medical tube provided with a reinforcing member comprising a plastic tube reinforced with a reinforcing member, a reinforcing member on a tube wall at a distal end portion of the tube is left without being cut, and only the plastic resin of the reinforcing member portion is left. A medical tube provided with a reinforcing member, wherein at least one of the passages from which the gas is removed is provided in the distal end wall. 2. The medical tube according to claim 1, wherein the reinforcing member is a blade-shaped reinforcing member. 3. The medical tube provided with a reinforcing member according to claim 1, wherein the reinforcing member is a spiral reinforcing member. 4. A medical tube provided with a reinforcing member according to claim 1, wherein the passage has a circular shape. 5. The medical tube provided with a reinforcing member according to claim 1, wherein the passage is formed in a single shape in the longitudinal direction of the tube. 6. The medical tube with a reinforcing member according to claim 1, wherein the passage is spiral. 7. The medical tube according to claim 1, wherein the passage has a spiral shape, and its direction is disposed so as to face the spiral reinforcing member. 8. The method according to claim 1, wherein the reinforcing member is made of at least one selected from alloy thin wires, shape memory alloys, pseudoelastic alloys, glass fibers, amorphous alloys, ionomers, and carbon fibers. 8. The medical tube provided with a reinforcing body according to any one of 7 above. 9. A medical tube provided with a reinforcing member according to claim 1, wherein the resin at the distal end is made of a resin that is more flexible than the resin of the main body.