JPH062685Y2 - In-vivo open / close member - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an opening member for opening the inside and the outside of a living body.

[Conventional technology]

Opening the inside and outside of the living body means the development of artificial organs,
The necessity is increasing more and more with the development of inspection methods and the progress of surgery.

The applicant of the present invention discloses, as an opening member for this purpose, JP-A-59-1.
Japanese Patent No. 46662 and Japanese Patent Laid-Open No. 59-146635 have already proposed, and these opening members have a cylindrical shape and are made of a material having biocompatibility. It is equipped with holes.

[Problems to be solved by the invention]

However, as shown in FIG. 4, the opening member A has a cylindrical shape, and when the living body B is attached to the living body B as shown in FIG. 5, the incision of the living body B is generally straight. Therefore, in the state where the cylindrical opening member A is attached to such a linear incision, the opening member A is
A space S that cannot be completely sewn between the outer wall surface of the body and the living body B
However, it takes a considerable number of days for the skin of this part to be completely bonded. Moreover, not only is the initial fixability poor due to this gap S, but there is also the risk that bacteria may enter through this gap S and cause infectious diseases.

[Means for Solving the Problems] In order to solve the above problems, the cross-sectional shape of the columnar portion of the opening member provided with a through hole that comes into contact with the living body is a spindle shape that easily matches the incision shape of the living body. To do.

[Action]

When the in-vivo / intracorporeal opening member is sewn to the incision part of the living body, it is possible to sew in contact with the entire circumference of the outer wall of the opening member.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an in-vivo / in-vivo opening member (hereinafter referred to as opening member) 1, and this opening member 1 has a columnar portion 1a having a through hole 2 formed therein.
And the horizontal cross-sectional shape is spindle-shaped.

Further, in the embodiment shown in FIG. 2, the cross-section of the columnar portion 10a of the opening member 10 that comes into contact with the incision of the living body has a spindle shape, and the upper and lower ends or both ends of the columnar portion 10a are used to prevent the body from coming off and to prevent it from hitting. The flange portion 10b may be integrally formed so as to have the shape of the columnar portion 1b.
A through hole 20 is opened in 0a.

Of these, the opening member 1 is attached to the living body B in a state shown by the fracture surface of FIG. 3, and the outside I and the inside II of the living body are opened by the through holes 2. Therefore, a pipe, such as a catheter, is inserted into the through hole 2 to allow drugs and the like to enter inside the living body II.
Can be thrown into.

Such a through hole 2 (20) includes a columnar portion 1 a (10
It may be a hole formed in the longitudinal axis direction of a), or may be opened in an oblique direction, bent or bent in the middle, branched, or a plurality of holes may be formed. .

Further, a seal ring made of silicone rubber or the like may be attached to the inner wall of the through hole 2 (20) in order to stably hold a pump such as a catheter and prevent infection from the outside.

By the way, as a material for forming the opening members 1 and 10, ceramics such as alumina, zirconia, and calcium phosphate having excellent biocompatibility, metals such as stainless steel and titanium alloy, which are durable as surgical materials, or polyethylene. It is made of a synthetic resin such as, and is made of a material in which a biocompatible material is coated on the site of contact with the living body.

[Effect of device]

Since the cross-sectional shape of the columnar part where the through hole that contacts the living body is raised like the above is a spindle shape, when it is also embedded in the site where the living body is linearly incised, the fixing property in the initial stage of implantation increases, In addition, even when sutured, no gap is formed, and there is little risk of infection, which greatly contributes to medical treatment.

[Brief description of drawings]

1 and 2 are both a perspective view of an in-vivo / intracorporeal opening member according to an embodiment of the present invention, and FIG. 3 is a partially broken cross-sectional view showing a state in which the in-vivo / internal-opening member according to the present invention is attached to a living body.
FIG. 5 and FIG. 5 are respectively a perspective view of a conventional in-vivo / intracorporeal opening member and a diagram for explaining a state of being mounted on a living body. 1, 10 ... In-body opening / closing member 1a, 10a ... Columnar part 2, 20 ... Through hole

Claims (1)

[Scope of utility model registration request] 1. At least a portion that comes into contact with a living body has a columnar portion having biocompatibility, a through hole that opens between the inside and the outside of the living body is formed in the columnar portion, and the columnar portion has a cross-sectional shape. An in-vivo / in-vivo opening member characterized by having a spindle shape.