JPH06245939A - Temporary clip - Google Patents

Abstract

PURPOSE:To develop a temporary clip suitable for a treatment of the cerebroaneurysm. CONSTITUTION:A balloon 3 which expands when an air pressure is applied into the clip body via a flexible tube 4 is built in the end of the clip and an object is pressed by expanding this balloon 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is applicable to, for example, cerebral aneurysms.
The present invention relates to a temporary clip used for surgery of ral aneurysm).

[0002]

A cerebral aneurysm is a case in which the wall of an intracranial artery expands like an aneurysm, and if the cerebral aneurysm ruptures, it causes subarachnoid hemorrhage. There are two types of cerebral aneurysms, tree-shaped or saccular and spindle-shaped, depending on the shape, but saccular aneurysms are predominant. The boundary between the saccular aneurysm and the artery in which it originates is called the pedicle or stalk, and the aneurysm that protrudes further from the aneurysm wall to the aneurysm wall is called a bleb. There is.

[0003] For diagnosis, subarachnoid hemorrhage is confirmed by CT scan or lumbar puncture, and the site and shape are determined by cerebral angiography. The treatment is to prevent rebleeding by clipping the aneurysm stalk with a fixing clip. However, when clipping with this fixing clip, for example, rupture (premature repture) occurs when the surgical field of view is not sufficiently secured, detachment does not proceed further, it is necessary to incise the aneurysm to reduce pressure. In such cases, it is necessary to temporarily clip using a temporary clip. FIG. 4 shows a state in which an artery is clipped using a temporary clip.
Incidentally, as shown in FIG. 4, conventionally, clips of the same format have been used for both fixed clips and temporary clips.

[0004]

As described above, conventionally, even when used as a temporary clip, the same clip as the fixed clip has been conventionally used, which causes the following problems. That is, since the clip pressure required varies depending on the purpose and site of clipping, it is necessary to prepare many blood vessel clips having different clip pressures during treatment. Also, for sudden massive bleeding during surgery, it is necessary to quickly block blood flow using a temporary clip, but after massive bleeding it is quite difficult to check the bleeding site and put on the clip. It becomes a complicated operation. Furthermore, since temporary clipping naturally stops the blood supply to peripheral blood vessels, it must be used for a short time. Therefore, if the aneurysm is torn, temporarily suppress the bleeding site by some method, remove the attached temporary clip, restart peripheral circulation,
It is necessary to reattach the temporary clip,
It is not easy for a doctor to do this intraoperatively.

The present invention has been made in order to solve such a problem, and by using a temporary clip having a structure suitable for remote operation during an operation, blood vessels that may be blocked in advance are preliminarily attached to a blood vessel. It is mounted so that the clip end can be operated by remote control to adjust the air pressure.

[0006]

DISCLOSURE OF THE INVENTION A temporary clip according to the present invention includes a balloon or a plurality of balloons (including similar balloons) inside a main body which expands when air pressure is applied remotely through a flexible tube. It is provided with means to be built in the clip end, means to press the object with this balloon by expanding the balloon, and means to adjust the clip pressure against the spring pressure by adjusting the air pressure inside the balloon. It is characterized by that. Further, at least one of the gripping ends of the clip is fixed to a balloon storage chamber that stores a balloon (including a similar one) that expands a clip opened and closed by a spring when air pressure is applied via a flexible tube. Means, and means for pushing one of the gripping ends to expand the clip end by expanding the balloon,
Means for varying the clip pressure against the spring pressure by adjusting the air pressure inside the balloon. Further, a means for incorporating one or a plurality of balloons (including similar ones) that expand when air pressure is applied through the flexible tube into the grip end inside the main body, and a means for expanding the balloon to hold the grip end. And a means for expanding the clip end by expanding the clip and a means for varying the clip pressure against the spring pressure by adjusting the air pressure in the balloon.

[0007]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view showing an embodiment of the present invention, in which 1 is a temporary clip body, 2 is a spring, 3 is a balloon (including those similar thereto), 4 is a flexible tube, and 5 is pressure adjustment. The vessel 6 is an artery to be clipped. The temporary clip of the present embodiment is configured as shown in the figure, and the balloon 3 is built in on both sides of the clip end, and in the state where no air pressure is applied, as shown in FIG. It is contracting. In this state, the grip portion is grasped, the clip end is opened, the artery 6 is sandwiched, and a predetermined air pressure is applied to the balloon 3 by the pressure adjuster 5 to expand the balloon 3. When the balloon 3 is expanded, as shown in FIG. 1B, the artery 6 is compressed in the vertical direction of the drawing, and clipping of the artery can be stopped.

Since the temporary clip in this embodiment is constructed and operates as described above, firstly, the clip pressure can be easily and accurately adjusted by remote control. That is, the clip pressure can be controlled only by adjusting the air pressure applied to the balloon 3 with the pressure adjuster 5, and the clip can be used as a universal clip. Therefore, various clips are prepared as in the conventional case, and an appropriate clip is prepared each time. You can avoid the complexity of having to select and use clips. Secondly, with the temporary clip, it has conventionally been necessary to repeat the attachment / detachment frequently, but in this embodiment, the same effect as the attachment / detachment operation can be obtained by the operation of the pressure regulator 5, so that the blood flow is blocked in advance. It becomes possible to attach it to a site where there is a possibility of performing the operation, and the operation can be performed easily and easily. Thirdly, since remote control can be performed only through the thin flexible tube 4,
Less likely to interfere with the surgical field of view. In this example,
Although a pressure regulator capable of electrical control is used, manual control may be performed using a syringe.

Example 2. 2 is an explanatory view showing a second embodiment of the present invention, the same reference numerals as those in FIG. 1 denote the same or corresponding parts, and 6 denotes a balloon storage chamber in which the balloon 3 is stored. In the second embodiment, a balloon storage chamber having a predetermined size for storing the balloon 3 is provided, and one end of the balloon storage chamber is fixed to one of gripping ends of a clip which is opened and closed by a spring. Therefore, the balloon 3 is expanded by pressing the piston rod of the syringe 7, and the clip 1 is opened against the elastic force of the spring. Therefore, once mounted, by controlling the pressure applied to the balloon 3, the same effect as that of the first embodiment is achieved. 2 (A) shows a state in which the clip end is closed, and FIG. 2 (B) shows a state in which air pressure is fed to expand the balloon 3 and open the clip end.

Embodiment 3. FIG. 3 is an explanatory view showing a third embodiment of the present invention, and the same reference numerals as those in FIGS. 1 and 2 indicate the same or corresponding parts. In the third embodiment, the balloon 3 is provided on the grip portion side.
The spring pressure is used for the force of closing the clip, and the expansion pressure of the balloon 3 is used for the force of opening the clip. Therefore, once mounted, the pressure regulator 5 (not shown in FIG. 3) controls the pressure applied to the balloon, thereby achieving the same effect as that of the first embodiment. Note that FIG. 3A shows a state in which the clip end is closed, and FIG. 3B shows a state in which air pressure is fed to expand the balloon 3 and open the clip end.

Although the above embodiment describes the treatment of a cerebral aneurysm, it goes without saying that the present invention is not limited to this and can be widely and generally carried out.

[0012]

As described above, the present invention can be used as a universal clip because the clip pressure can be freely changed by using a balloon as described above, and can be used as a temporary clip while attached to a target site. Since it is possible and remote control is possible only by the flexible tube, there is an effect that a clip suitable for medical treatment and the like can be obtained.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a second embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a third embodiment of the present invention.

FIG. 4 is a diagram for explaining treatment of a cerebral aneurysm.

[Explanation of symbols]

 1 Temporary clip 2 Spring 3 Balloon 4 Flexible tube 5 Pressure regulator 6 Artery

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[Procedure amendment]

[Submission date] June 11, 1993

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction content]

Although the above embodiment describes the treatment of a cerebral aneurysm, it goes without saying that the present invention is not limited to this and can be widely and generally carried out. Further, in the above embodiment, the balloon is inflated pneumatically.
However, liquid such as water is used to expand the balloon.
It may be used.

Claims (3)

[Claims] 1. A means for incorporating a balloon or balloons (including similar balloons), which are expanded by remote control by applying air pressure through a flexible tube, into a clip end in a main body, and the balloon is expanded. By doing so, the temporary clip is provided with means for pressing the object with this balloon and means for varying the clip pressure against the spring pressure by adjusting the air pressure inside the balloon. 2. A clip opened and closed by a spring,
A means for fixing at least one of the gripping ends of the clip to a balloon storage chamber that stores a balloon (including similar balloons) that expands when air pressure is applied through a flexible tube; and expanding the balloon. And a means for pushing one of the gripping ends to spread the clip end and a means for varying the clip pressure against the spring pressure by adjusting the air pressure in the balloon. clip. 3. A means for incorporating a single or a plurality of balloons (including similar balloons) that expand when air pressure is applied through a flexible tube into the gripping end in the main body, and a means for expanding the balloons. A temporary clip comprising means for expanding the clip end by expanding the gripping end and means for varying the clip pressure against spring pressure by adjusting the air pressure inside the balloon.