JPH06406U - Medical balloon - Google Patents

Abstract

(57) [Summary] [Purpose] A medical balloon that is used to stretch and repair partially deficient blood vessels, nerves, skin, etc. (EN) A balloon that prevents lateral displacement of linear tissue and is free from wrinkles when deflated. [Structure] Balloon 1 in which a rubber-like elastic sheet is stretched on the upper surface of a substrate;
It is composed of a connecting tube 2 for discharging and an injection port 3 which serves as a needle stick portion for feeding and discharging air, and an elastic sheet is adhered and fixed to the surface of the substrate at least at two opposite positions around the balloon portion. A balloon fixing part 4 is provided. Furthermore, a stopper for accommodating and holding a linear biological tissue is attached to the surface of the balloon.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a balloon used for repairing skin, blood vessels, nerves, etc. partially lost due to some factors.

[0002]

[Prior art]

 Conventionally, when a breast is resected due to breast cancer or the like, a method of repairing it is to place a preshaped balloon under the skin and gradually inflate the balloon to stretch the skin and stitch it together. It is taken. As shown in Fig. 4, this balloon consists of a pre-shaped hemispherical balloon (11), an injection port (13) for injecting air and water into the balloon, and a connecting tube (12) connecting them. Is made.

The hemispherically shaped balloon is suitable for stretching a wide range of skin, but when stretching linear tissues or organs such as blood vessels and nerves, it is in the middle of inflation of the balloon. However, there is a problem that blood vessels and nerves located on the spherical surface are often laterally displaced, and sufficient stretching cannot be obtained. Further, since the balloon (11) is formed in a certain size in advance, when the balloon is deflated as shown in FIG. 4 (a), the balloon will not be flat and will be wrinkled. Therefore, for example, when the nerve is stretched, there is a problem in that the wrinkle generated when the balloon is deflated may give extra excitement to the nerve or may damage the nerve.

[0004]

[Problems to be solved by the device]

 The present invention is intended to solve such problems of the conventional medical balloon for stretching the skin, and when it is implanted subcutaneously, it is fixed to the surrounding tissue, and the blood vessel is fixed. The present invention provides a medical balloon that prevents lateral displacement during stretching of linear tissues and organs such as nerves and that has a smooth expansion and contraction of the balloon and is free from wrinkles.

[0005]

[Means for Solving the Problems]

 That is, the present invention is a balloon for extending and repairing a living tissue such as a blood vessel, nerve, or skin which is buried under the skin and partially deficient, and a rubber-like elastic sheet is stretched on the upper surface of a substrate. A connecting tube for feeding and discharging water and air, the tip of which is opened in the balloon portion, and a balloon attached to the rear end of the connecting tube for feeding and discharging water and air A balloon fixing part, which is composed of an injection port serving as a needle stick part, and which is formed by adhering and fixing the elastic body sheet forming the balloon part to the upper surface of the substrate at at least two opposing positions around the balloon part. The medical balloon is characterized in that a stopper is attached to the surface of the elastic sheet that constitutes the balloon portion.

Hereinafter, the present invention will be described in detail with reference to the drawings. 1A and 1B are views showing a medical balloon according to an embodiment of the present invention. FIG. 1B is a state in which the balloon is deflated, and FIG. 1C is a sectional view taken along the line AA 'in FIG. 1B. The medical balloon according to the present invention comprises a balloon part having a balloon (1) formed on an upper surface of a substrate (6), a connecting tube (2) for feeding and discharging water and air to the balloon part, and an injection port. (3).

As shown in FIG. 1 (c), the balloon portion is formed by stacking a sheet of rubber-like elastic material on a substrate (6) and adhering and fixing two opposing sides with an adhesive (7). Then, the balloon fixing portion (4) is used, and the elastic sheet is stretched by bending the elastic sheet on the lower side of the substrate (6) and adhering it with an adhesive on the other two sides. The important point of the balloon fixing part (4) is that an elastic sheet is bonded and fixed on the upper surface side of the substrate (6), and then a part of the elastic sheet is further bent to the lower surface side of the substrate. There is no difference in gluing. Due to such a structure, the medical balloon of the present invention has a shape that does not cause wrinkles on the balloon even when the balloon (1) is contracted as shown in FIG. 1 (b).

The balloon fixing part (4) is sealed with an adhesive, and is used to sew it with a thread or the like and fix it to internal tissues when the balloon part is implanted under the skin. Generally, the shape of the balloon portion is a quadrangle such as a rectangle, which is easy to manufacture, but is not limited to this, and a circle or an ellipse may be used. Also in this case, the elastic sheet for forming a balloon is adhered and fixed on the upper surface side of the substrate to form a balloon fixing portion at at least two opposite positions on the circumference.

The connecting tube (2) is for injecting air into and discharging air from the balloon (1) to inflate and deflate the balloon, and has a tip portion at the edge of the bent portion (5) of the balloon portion. From the position, it is inserted into the balloon part (1), and the insertion part is hermetically sealed by adhesion. The direction is not particularly limited, but when stretching blood vessels or nerves, it is better to mount them at a position that does not hinder their running.

The injection port (3) is connected to the rear end of the connection tube (2), and when used, it is subcutaneously embedded together with the balloon part and the connection tube, and water or air is injected into the balloon (1) with a syringe or the like. It serves as a needle stick part for feeding and discharging. The structure is not particularly limited as long as it does not allow water or air to leak from the needle stick hole. For example, a subcutaneously implantable drug solution injection port (a structure that prevents the needle from penetrating at the time of needle stick, as disclosed in JP-A-1-171569, JP-A-2-79955, JP-A-4-16787, etc.) ) Etc. can be used.

FIG. 2 shows a stopper for preventing lateral slippage during stretching of linear tissues and organs such as blood vessels and nerves on the surface of the elastic sheet constituting the balloon portion, that is, the surface of the balloon (1). As an example, a tube (8) provided with slits and a rib (9) are attached. The slit provided in the tube (8) is for holding blood vessels, nerves, etc., so if the width is too narrow, it is difficult to store, and if it is too wide, there is a risk of misalignment. The width may be set according to the thickness of the nerve, and is not particularly limited. The tube (8) may be provided with one long tube as shown in Fig. 2 (a), but as shown in (b) or (c), it may be divided into a plurality of tubes with appropriate intervals. If attached, a probe for pressure measurement or the like can be installed between them, which is preferable. As shown in FIG. 2 (d), a plurality of ribs (9) may be attached in two rows, and the effect is similar to that of the tube (8).

The substrate (6) constituting the medical balloon according to the present invention is preferably made of a flexible sheet material such as rubber or thermoplastic resin, but is made of a material that does not stretch so much. Better. In order to suppress the elongation, a resin or metal mesh may be put in the material of the substrate (6) without any problem. On the other hand, the rubber-like elastic body forming the balloon (1) is, for example, a rubber-based material that is expandable and contractible and does not wrinkle when contracted, such as natural rubber and silicone rubber, and has a large elongation. Preferably there is. The material of the connection tube (2), the injection port (3), the tube (8) and the rib (9) is preferably made of a flexible material such as rubber or thermoplastic resin. ) Can be a relatively hard material.

Next, a method of using the balloon according to the present invention will be described. First, with the balloon deflated as shown in FIG. 3 (a), the entire body including the balloon portion, the connection tube (2), and the injection port (3) was embedded subcutaneously in a predetermined position, and the Accordingly, the balloon fixing part (4) is sewn and fixed to the surrounding tissue. Here, the tissue (10) such as nerves and blood vessels is housed and held in the stopper (tube 8) provided on the balloon surface. After suturing the incised skin and the like as it is, the balloon (1) is inflated by sending water or air from the subcutaneous injection port (3) using a syringe or the like.

Air is fed by several ml per day to gradually inflate the balloon (1) and gradually expand tissues and organs such as nerves and blood vessels. The period is usually about 2 weeks to 1 month, although it depends on the degree of loss of tissues. When the tissue or the like is stretched to the target location, the air in the balloon (1) is discharged from the injection port (3) to deflate the balloon, and the balloon is re-incised to put the medical balloon of the present invention outside the body. Take it out.

The shape and size of the medical balloon of the present invention varies depending on the target to be stretched and is not particularly limited, but when targeting linear tissues or organs such as blood vessels and nerves. Is generally rectangular with the sides of the balloon portion having a length of about 2 to 3 cm and about 4 to 5 cm. For the purpose of stretching the skin, a square having a side of 10 cm or a large circle having a diameter of 10 cm is also used.

[0016]

[Effect of device]

 The medical balloon of the present invention is used to sew and fix the balloon portion to surrounding tissues when implanting subcutaneously to stretch and repair living tissue such as partially deficient blood vessels, nerves, and skin. When a linear tissue such as a blood vessel or a nerve is targeted, lateral slippage can be prevented by storing and holding it in a stopper attached to the balloon surface, so it is efficient, safe, and reliable. Not only can treatment be performed, but when the balloon is deflated, it does not cause wrinkles on the balloon, so it does not cause irritation to the nerves due to wrinkles or damage to the tissue, and it has a great medical effect. To contribute.

[Brief description of drawings]

1A and 1B are views showing a medical balloon according to an embodiment of the present invention, FIG. 1B is a state in which the balloon is deflated, and FIG. 1C is a sectional view taken along the line AA ′ in FIG. 1B.

FIG. 2 is a view showing another embodiment of the medical balloon according to the present invention.

FIG. 3 is a side view illustrating a usage state of the medical balloon of the present invention.

FIG. 4 is a view showing a conventional medical balloon.

[Explanation of symbols]

 1, 11 Balloon 2, 12 Connection tube 3, 13 Injection port 4 Balloon fixing part 5 Bending part 6 Substrate 7 Adhesive 8 Tube 9 Rib 10 Tissue

Continued Front Page (72) Kenji Kawai 27-4 Nakajima Shimo, Aizen-cho, Aizumi-cho, Tsuchizaki Port, Akita-shi

Claims (2)

[Scope of utility model registration request] 1. A balloon for extending and repairing a living tissue such as a blood vessel, a nerve, and a skin which is buried under the skin and partially deficient, and a rubber-like elastic sheet is stretched on the upper surface of a substrate. The balloon portion, the tip of which is opened into the balloon portion,
A connecting tube for feeding and discharging air, and an injection port which is attached to a rear end of the connecting tube and serves as a needle stick portion for feeding and discharging air, and at least two facing each other around the balloon portion. A medical balloon characterized in that a balloon fixing portion formed by adhering and fixing an elastic sheet constituting a balloon portion to an upper surface of a substrate is provided at a certain position. 2. A stopper is provided on the surface of an elastic sheet that constitutes the balloon portion,
The medical balloon according to claim 1.