JPH0316680Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a catheter made of medical elastic silicone material, etc. More specifically, the invention relates to a catheter that is inserted into an organ in the human body through an opening. The present invention relates to a catheter made of an elastic silicone material or the like for draining physiological secretions or medical medicinal fluids from the organs to the outside of the human body.

(Prior Art) Generally, in various surgical fields, for example, in the field of urology, which is related to the drainage of fluid from the kidneys and bladder, or in the field of gastroenterology, which is related to the drainage of bloody sputum, and also in the field of urology, which is related to the drainage of blood from the brain membranes and the skull. Catheters are widely used in the field of neurosurgery, which is related to the drainage of brain fluid that accumulates between the brain and the wall, for the purpose of draining physiological secretions or medical liquids from the organs of the human body to the outside of the human body. .

Traditionally, in order to achieve such a goal,
Catheters made of silicone material, etc., are used that have moderate elasticity and are made into a tubular shape. In general, the insertion of catheters into orifices in organs within the body is carried out in a manner that reduces the occurrence of painful friction at the contact points of the catheter and in any case does not cause painful trauma to the patient. To facilitate insertion of the catheter, a lubricant film formed by petrolatum is provided on the outer surface of the catheter.

(Problem to be solved by the invention) In particular, if there is a lubricant film formed by petrolatum on the outer surface of the catheter, for example, the inner surface of an orifice of an organ in the body and the outer surface of the catheter may There is a risk that physiological secretions or medical solutions that are being discharged will become stagnant in the extremely narrow gap created between the two, causing a serious abnormal situation such as not being able to be discharged from the human body. When such an abnormal situation occurs, it causes a lack of oxygen in areas where the liquid is stagnant, and furthermore, certain types of bacteria may remain in the stagnant liquid. If you allow the infection to develop, you will end up causing an infection.

The present invention allows the discharged fluid to be discharged from the gap between the inner surface of the orifice of an internal organ and the outer surface of the catheter when physiological secretions or medical medicinal fluids are discharged from the human body. It is an object of the present invention to provide a catheter made of an elastic silicone material or the like that ensures that the catheter is discharged from the body through this gap without becoming stagnant.

(Means for Solving the Problems) The present invention provides an elastic silicone material that is inserted into an organ in a person's body through an opening and is used to discharge physiological secretions or medical medicinal fluids from the organ to the outside of the person's body. A catheter made of materials etc.
The distal end portion of the catheter has at least one tube for guiding the secretion liquid or the medicinal liquid into the catheter.
and an outer surface of the catheter is provided with at least one fluid groove extending continuously along the catheter to proximate the distal end portion; is adapted to generate an additional flow for draining the secreted fluid from the organ or the medicinal solution out of the human body between the inner surface of the aperture and the outer surface of the catheter. It is characterized by

(Operations and effects of the invention) According to the invention, due to the presence of the liquid flow groove,
Additional flow occurs to drain physiological secretions from organs or medical medicinal fluids out of the human body between the inner surface of the aperture and the outer surface of the catheter, without causing stagnation of the fluid. . That is, on the one hand, physiological secretions from organs or medical drugs are discharged straight out of the body through the catheter, and on the other hand, they are passed through the catheter between the outer surface of the catheter and the inner surface of the opening. The liquid then becomes an additional flow guided to the flow channel and is discharged outside the body without stagnation. Thus,
Problems such as infection due to the presence of bacteria and lack of oxygen caused by stagnation of liquid are eliminated. Also, when lubricant is applied to the catheter, by feeding the lubricant into the fluid groove, the catheter can be inserted into the aperture without painful friction. Furthermore, the structure of the present invention is simple, and the manufacturing cost is not particularly high.

(Example) Hereinafter, an example of the present invention will be described with reference to the attached drawings.

FIG. 1 is a front view of a portion of a conventional catheter, and FIG. 2 is a diagram showing a portion of a catheter according to an embodiment of the present invention.

In the catheter 1 shown in FIG.
is made of an elastic silicone material or the like, and is inserted through an opening 4 into an organ within the human body, and discharges physiological secretions or medical liquids (or both) from the organ to the outside of the human body. It is fulfilling its role. The catheter 1 is used to drain physiological secretions or medical medicinal fluids to the outside of the body through the catheter 1.
Catheter 1 for guiding fluid into catheter 1
The catheter 1 is provided with at least one small hole 3 passing through its wall near the distal portion 2 of the catheter 1 . The catheter 1 is inserted into the aperture 4 after lubricating its outer surface so that it can slide smoothly without causing trauma to the patient. As shown in FIG. 1, there is a narrow annular gap 5 between the outer surface of the catheter 1 and the inner surface of the aperture 4.
This occurs, and when physiological secretions or medical medicinal fluids are being discharged from organs to the outside of the body, a portion of this fluid inevitably flows through this annular gap 5. In particular, if a lubricant or the like is applied to the outer surface of the catheter 1, a phenomenon occurs in which the discharged liquid becomes stagnant somewhere in the gap 5. If such fluid stagnation occurs, a convenient colony 6 for bacteria will form there, potentially posing a risk of infection.

The present invention eliminates the risk of the formation of colonies 6 for bacteria by the above-described structure, and the structure is illustrated in FIG. 2. In FIG. 2, the same reference numerals as in FIG. 1 indicate the same or equivalent parts as in FIG.

In contrast to the conventional catheter shown in FIG. 1, the catheter 1 of the present invention is characterized by having a fluid flow groove 10 as described below.

Referring to FIG. 2, the patient's bladder 7 is filled with physiological secretion 13. In order to drain this physiological secretion 13 out of the patient's body, the catheter 1, which is provided with a small hole 3 near the distal end portion 8, is inserted through the urethra 12, which is an open hole. The distal end 8 of the catheter 1 is equipped with a conventional rubber balloon 9 which, once the distal end 8 has been inserted into the bladder 7, is provided at the opposite end of the catheter 1, not shown. Air pressure is applied to the balloon 9 through the valve provided to inflate it and ensure that the distal end 8 of the catheter 1 does not slip out of the bladder 7. As mentioned above, the catheter 1 of the present invention is provided with a fluid groove 10 on its outer surface that extends continuously along the catheter 1 to near the distal end portion 8. This fluid flow groove 10 extends to the opposite end of the catheter 1.
Or it extends near the end. FIG. 2 shows, by way of example, a fluid flow groove 10 consisting of two grooves, which are continuously wound in a spiral shape over the entire circumferential wall of the outer surface of the catheter 1. They are provided in exchange with each other.

In addition to the main flow of physiological secretions 13 (indicated by arrow 14a) flowing through the catheter 1 through the ostium 3 near the distal portion 8 of the catheter 1, the outer surface of the catheter 1 and the urethra 12 As mentioned above, a flow of physiological secretions occurs between the body and the inner surface through the gap 5 (of course, this is caused by the pressure difference between the pressure inside the body and the pressure in the outside world). By providing the fluid groove 10 on the outer surface of the catheter 1, physiological secretions passing through the gap 5 are guided by the fluid groove 10 and are prevented from stagnating in the gap 5. No additional flow 14
is ensured, and this additional flow 14 and the aforementioned main flow 14a are continuously discharged from the human body. Since the additional flow 14 does not become stagnant, according to the invention, bacterial colonies 6 as described in FIG. 1 do not form in the gap 5.

In addition to its basic purpose of providing additional flow 14 to eliminate bacterial infections, this fluid channel 10 also allows for the passage of fluid into orifices of organs within the body. It also ensures the delivery of the lubricant necessary to facilitate the introduction of the catheter 1.

Furthermore, the above-mentioned liquid flow groove 10 is composed of a plurality of grooves that are similar to each other and intersect with each other, and that can be easily produced by hot drawing or direct pressing. With simple processing operations, it can be effectively attached to generally existing medical tubes and can be used in a variety of procedures.

[Brief explanation of drawings]

FIG. 1 is a front view of a portion of a conventional catheter, and FIG. 2 is a front view of a portion of a catheter that is an embodiment of the present invention. 1...Catheter, 3...Small hole, 4...Open hole, 5...Gap, 6...Bacterial colony, 7...
Bladder, 8...Tip, 9...Rubber balloon, 1
0... Fluid groove, 12... Urethra.

Claims (1)

[Claims for Utility Model Registration] (1) Elastic silicone materials, etc., which are inserted into organs in the human body through openings and discharge physiological secretions or medical liquids from the organs to the outside of the human body. The catheter is made of at least one small hole in the distal end portion of the catheter for guiding the secretion liquid or the medicinal liquid into the catheter, and the outer surface of the catheter is made of the At least one fluid groove is provided that extends continuously along the catheter close to the distal end portion, the fluid groove directing the secretions from the organ or the medicinal fluid to the inner surface of the aperture. and an outer surface of the catheter to create additional flow for exiting the human body. (2) A catheter according to claim 1, in which lubricant is fed into the fluid groove when the catheter is inserted into the orifice of the organ. . A catheter characterized in that the fluid flow groove also functions to effectively enhance the lubricity of the catheter. (3) The catheter described in Claim 1 of the Utility Model Registration Claim, wherein the fluid flow groove has a spirally wound shape, and the catheter has two grooves of similar shape that intersect with each other. A catheter characterized by being shaped. (4) The catheter described in claim 1 of the utility model registration claim, wherein the fluid flow groove is formed by a hot drawing method or a pressing method during the manufacturing process of the catheter. A catheter characterized by: (5) The catheter described in claim 1 of the utility model registration, characterized in that the fluid flow groove is generally formed in an existing medical pipe.