JP3176653B2 - Medical capsule device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical capsule device used for measuring PH in a living body, administering a drug, or collecting a body fluid.

[0002]

2. Description of the Related Art As a means for measuring a PH value in a body cavity such as a stomach or an intestine, a medical capsule device provided with a PH sensor in a capsule body has been conventionally known. However, this type of medical capsule device is administered into the body cavity from the oral part of the patient, and has a PH value in the process of passing through the digestive tract such as the stomach and intestine.
Since the value was measured, the PH value could not be measured at a desired position for a long time.

In order to solve such a problem, Japanese Patent Application Laid-Open No. 58-19232 discloses a medical capsule device provided with a fixing means for fixing a medical capsule in a body cavity.

[0004]

However, in the above-mentioned conventional medical capsule device, the fixing means comprises a needle-like member,
The capsule is made up of a biasing member for projecting the needle-like member to the outside from the capsule and a thread-like member for holding the needle-like member in the capsule against the biasing force of the biasing member. And the configuration becomes complicated. Further, in the conventional medical capsule device, since the needle-shaped member is pierced into the body cavity wall to fix the medical capsule in the body cavity, there is a possibility that the living tissue may be damaged.

The present invention has been made in view of the above problems, and has as its object to fix a medical capsule in a body cavity with a simple structure without increasing the size of the capsule, and furthermore, there is a risk of damaging living tissue. It is intended to provide a medical capsule device without any.

[0006]

According to the present invention, there is provided a medical capsule device comprising: a capsule body; a string having one end connected to the capsule body; and a string having one end connected to the other end of the string. And a clip connected to fix the capsule body in a body cavity.

That is, in the present invention, a clip is used as a means for fixing a medical capsule in a body cavity,
The medical capsule can be fixed in the body cavity with a simple configuration without increasing the size of the capsule, and there is no fear of damaging living tissue.

[0008]

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

FIG. 1 is a view showing a medical capsule device according to a first embodiment of the present invention. As shown in FIG. 1, the medical capsule device 1 is configured by fixing a clip 3 to a medical capsule 2. I have.

The clip 3 is for holding a living tissue 4 such as a stomach wall. For example, a band-shaped thin metal plate 5 is bent in a U-shape at a central portion, and both ends are crossed in a V-shape. It is formed.

When the medical capsule device 1 configured as described above is to be placed in a body cavity, the medical capsule device 1 is first stored in a flexible tube 6 as shown in FIG. The flexible tube 6 is introduced into the body cavity in a state where the hook member 7 is engaged with the hook 3a provided at the rear end of the flexible tube 6. Then, the distal end of the flexible tube 6 is made to approach the living tissue 4 in the body cavity, and the medical capsule device 1 is pushed out from the distal end of the flexible tube 6 by the pusher tube 8, and as shown in FIG. To expand.

Next, in this state, the connecting plate 9 connected to the rear end of the hook member 7 is pulled toward the hand side by the wire 10, and the rear end portion of the clip 3 is fitted to the front end of the pusher tube 8. To fit. As a result, the clip 3 is in a closed state, and holds the living tissue 4. Then, when the flexible tube 6 is retracted in this state, the cylindrical body 11 comes off from the tip of the pusher tube 8 as shown in FIG. 1C, and the clip 3 is held in a closed state.

As described above, in this embodiment, the medical capsule 2
Since the clip 3 is attached to the medical capsule 2, the medical capsule 2 can be fixed at an arbitrary position in the body cavity. Therefore, there is no need to provide a needle-like member or a biasing member in a medical capsule as in the related art, so that the medical capsule can be fixed in a body cavity with a simple configuration without increasing the size of the capsule. Further, there is no need to pierce the living tissue with the urging force of the urging member, so that there is no risk of damaging the living tissue. Next, a second embodiment of the present invention is shown in FIG. Note that the same parts as those shown in FIG.

In FIG. 2, reference numeral 12 denotes a clip fixed to the medical capsule 2, and the clip 12 is formed by bending a metal sheet made of a shape memory alloy into a U-shape.

When the medical capsule 2 is fixed in a body cavity using the clip 12 configured as described above, FIG.
As shown in FIG. 3A, the clip 12 is housed in the flexible tube 6, and the hook member 7 provided in the flexible tube 6 is locked at the rear end of the clip 12. To introduce the flexible tube 6 into the body cavity. Then, the distal end of the flexible tube 6 is made to approach the living tissue 4 in the body cavity, the clip 12 is pushed out from the distal end of the flexible tube 6 by the pusher tube 8, and the clip 12 is expanded as shown in FIG. Open.

Next, in this state, when the clip 12 is heated to a predetermined temperature (above the body temperature) by the heating tip 13 provided at the tip of the pusher tube 8, the clip 12 is stored in advance as shown in FIG. It changes to the set shape, and holds the living tissue 4.

Therefore, in the second embodiment, similarly to the first embodiment, the medical capsule can be fixed in the body cavity with a simple structure without increasing the size of the capsule, and furthermore, the living tissue is damaged. Don't worry.

In the above embodiment, the clip 12 is accommodated in the flexible tube 6 when the medical capsule 2 is introduced into the body cavity. However, as shown in FIG. A portion 14 may be provided, and the projection 14 may be gripped by gripping forceps 17 protruding from the forceps opening 16 of the endoscope 15. Then, the clip 12 may be closed by blowing hot water or hot air from the forceps port 16 of the endoscope 15 onto the clip 12.

Further, in the above embodiment, the openable clip 12 is used as a means for fixing the medical capsule 2 in the body cavity. However, as shown in FIG. 4, a loop-shaped clip 18 made of a shape memory alloy is used. The living tissue 4 may be held by the loop 19 of the clip 18.

Next, a fifth embodiment of the present invention is shown in FIG. In FIG. 5, reference numeral 21 denotes a medical capsule, and a capsule main body 22 of the medical capsule 21 is provided with a drug release hole 23 and a body fluid suction hole 24 at both ends of the capsule main body 22. In the capsule body 22, a superabsorbent resin (or mechanochemical gel) 25 and a bellows container 26 are provided.

The superabsorbent resin 25 is a bellows container 26
This is for releasing the medicine 27 contained therein from the medicine discharge hole 23 to the outside. When the body fluid flowing into the capsule body 22 from the body fluid suction hole 24 is absorbed, the volume expands. Note that the capsule body 22 is formed by fitting and fixing hard lid members 29 and 30 made of synthetic resin or the like to both ends of a cylindrical container 28 made of an elastic material such as rubber.

Reference numeral 31 denotes a clip attached to the medical capsule 21. The clip 31 is formed by bending a wire made of a shape memory alloy into a "<" shape. In the medical capsule device configured as described above, when the body fluid flowing into the capsule body 22 from the body fluid suction hole 24 is absorbed by the superabsorbent resin 25, the superabsorbent resin 25 expands in volume, and the bellows container 26 Press on the bottom of the. As a result, the bellows container 26 contracts and deforms in the opening direction, and releases the drug 27 from the drug release hole 23 to the outside.

In the medical capsule device configured as described above, the medical capsule 21 is clamped by clamping forceps protruding from a forceps opening of an endoscope (not shown), and the distal end of the clip 31 is attached to a wall of a body cavity such as a stomach wall. When hot water (or hot air) having a body temperature or higher is blown from the forceps port of the endoscope to the clip 31 in a state of approaching or abutting on the body, the clip 31 clamps a living body wall such as a stomach wall. Can be fixed inside.

Therefore, in the above embodiment, the first
Similarly to the fourth embodiment, the medical capsule 21 can be fixed in the body cavity with a simple configuration without increasing the size of the capsule, and there is no fear of damaging the living tissue.

In the above embodiment, since the capsule body 22 is composed of the cylindrical container 28 made of an elastic material and the lid members 29 and 30 fitted to both ends of the cylindrical container 28, FIG. As shown, the capsule body 22 also curves following the curvature of the endoscope. Therefore, the medical capsule 21 can be introduced to a target site in the body cavity through the channel of the endoscope.

In the above embodiment, the capsule body 22 is constituted by the cylindrical container 28 made of an elastic material and the lid members 29 and 30 fitted to both ends of the cylindrical container 28, as shown in FIG. Alternatively, the cylindrical container 28 may be formed of the bellows 32.

Next, a seventh embodiment of the present invention is shown in FIG. 8, reference numeral 41 denotes three spherical capsule bodies 42.
a, 42b and 42c are connected by flexible wires 43a and 43b.
A super water-absorbent resin (or mechanochemical gel) 44 and a balloon 45 are provided in each capsule body 42a, 42b, 42c. Also, the capsule bodies 42a, 4
2b and 42c include capsule bodies 42a, 42b and 42, respectively.
A body fluid suction hole 46 for taking in a body fluid into c to expand the superabsorbent resin 44 and a drug release hole 48 for releasing a drug 47 contained in the balloon 45 to the outside are formed. Further, a clip 49 made of a shape memory alloy for fixing the medical capsule 41 in a body cavity is fixed to the capsule body 42a.

In the seventh embodiment configured as described above,
Since the clip 49 is attached to the medical capsule 41, the medical capsule can be fixed in the body cavity with a simple configuration without increasing the size of the capsule as in the above-described first to sixth embodiments, and There is no fear of damaging living tissue.

In the seventh embodiment, the medical capsule 41 is formed by connecting a plurality of spherical capsule bodies 42a, 42b and 42c with flexible wires 43a and 43b. As in the embodiment, the medical capsule 41 can be curved following the curvature of the endoscope.

FIG. 9 is a view showing an eighth embodiment of the present invention. A medical capsule device according to this embodiment comprises a capsule body 51, a clip 53 connected to the capsule body 51 via a cord 52, A semiconductor pressure sensor 54 provided in the capsule body 51, a telemetry circuit 55 for transmitting a bladder internal pressure value detected by the semiconductor pressure sensor 54 to a receiving circuit (not shown) incorporated in the wristwatch 57, and the telemetry circuit 55 And a power supply circuit 56 for supplying a driving power supply to the semiconductor pressure sensor 54.

In the eighth embodiment configured as described above,
Since the bladder internal pressure value detected by the semiconductor pressure sensor 54 can be transmitted from the telemetry circuit 55 to a receiving circuit (not shown) incorporated in the wristwatch 57, the burden on the patient can be reduced and the bladder pressure during normal times can be reduced. It can be measured continuously.

In the above embodiment, the semiconductor pressure sensor 5
The bladder pressure detected in step 4 is transmitted from the telemetry circuit 55 to a receiving circuit outside the body, but a recording circuit 58 is provided in the capsule body 51 as shown in FIG. The detection value may be recorded. Further, the capsule body 51 may be filled with a filler 59 having a large specific gravity to prevent the capsule body 51 from floating in the bladder. Further, the surface of the capsule body 51 may be subjected to a hydrophilic lubrication treatment to facilitate passage through the channel.

[0033]

As described above, the present invention comprises a medical capsule and a clip attached to the medical capsule and holding a living tissue in a body cavity. Therefore, since it is not necessary to provide a needle-shaped member or a biasing member in the medical capsule, the medical capsule can be fixed in the body cavity with a simple configuration without increasing the size of the capsule. Further, there is no need to pierce the living tissue with the urging force of the urging member, so that there is no risk of damaging the living tissue.

[Brief description of the drawings]

FIG. 1 is a view showing a medical capsule device according to a first embodiment of the present invention.

FIG. 2 is a view showing a medical capsule device according to a second embodiment of the present invention.

FIG. 3 is a view showing a medical capsule device according to a third embodiment of the present invention.

FIG. 4 is a view showing a medical capsule device according to a fourth embodiment of the present invention.

FIG. 5 is a view showing a medical capsule device according to a fifth embodiment of the present invention.

FIG. 6 is a view showing the operation of the medical capsule in the embodiment.

FIG. 7 is a view showing a medical capsule device according to a sixth embodiment of the present invention.

FIG. 8 is a view showing a medical capsule device according to a seventh embodiment of the present invention.

FIG. 9 is a view showing a medical capsule device according to an eighth embodiment of the present invention.

FIG. 10 is a view showing a medical capsule device according to a ninth embodiment of the present invention.

[Explanation of symbols]

1 ... medical capsule device, 2,21 ... medical capsule, 3,
12, 18, 31 ... clips.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuhiko Ozeki 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside the Olympus Optical Industrial Co., Ltd. (72) Inventor Yumi Hirao 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Inventor Koichi Umeyama 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (56) References JP-A-58-19232 (JP, A) JP-A-63-192460 (JP, A) JP-A-2-7950 (JP, A) Japanese Utility Model Application Sho-62-170010 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61B 5 / 07 A61B 17/12 320

Claims (1)

(57) [Claims] 1. A capsule body, a string- shaped body having one end connected to the capsule body, and the capsule body connected to the other end of the string-shaped body in a body cavity.
A medical capsule device, comprising: a clip fixed to the medical capsule.