JPS5930094B2 - medical capsule - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a medical capsule that is present in a living body to collect a sample.

One basic structure of a medical capsule is to form a hollow part inside the capsule whose volume can be changed, and to draw in a sample by this volume change.

In the medical capsules that have been prototyped in the past, there was a risk that the sample would leak or that unnecessary body fluids would get mixed in due to various gaps created when the sample storage case was stationary or moving.

This invention was made in order to eliminate the above-mentioned drawbacks, and the various gaps that are created when the case is stationary or moving are sealed with gaskets, making it easy to prevent body fluids other than the specified sample from entering the case. The aim is to provide a medical capsule with a unique structure.

This invention will be explained based on the drawings.
In the figure, 1 is a stepped portion la along the outer periphery.

1b and a fitting groove 1c are formed, the holding part 1d having an insertion hole 1dl is provided at the tip, and a fitting groove 1e is provided along the inner circumference at the rear end. There is.

Reference numeral 2 denotes a cylindrical case in which a stepped portion 21 is formed along the outer periphery of the tip.

At the tip of the case 2, there is a notch 22 for threading the thread.
．． 23 and a hole 24 for sample collection are provided, and a stepped portion 25 is provided along the inner peripheral surface, and a sealing gasket 4, also described later, is provided on the inner peripheral surface of the outer cylinder 5, which will be described later. It is slidably fitted through the .

Furthermore, recesses 26 and 27 into which circular sealing gaskets 3 and 4 are inserted are provided on the outer periphery of the stepped portion 21 and the rear portion of the case 2, respectively.

Reference numeral 5 denotes a cylindrical outer cylinder part formed as an extension of the main body frame, which will be described later. On the front outer periphery, a pair of support parts 52 formed by partially cutting out a pair of outer cylinders that support a circular lid 51 are provided. A convex portion 53 that is fitted into the fitting groove 1c is provided on the inner circumference of the rear portion, and serves to stiffen the front half of the main body frame 1.

The lid 51 is provided with a circular recess 511 into which the packing 3 at the tip of the case 2 is press-fitted.

A circular spring 6 is provided between the step portion 25 and the step portion 1a, and a circular spring 6 is provided between the step portion 25 and the step portion 1a to urge and move the case 2 in the direction A to create a hollow sampling chamber 1γ for storing the sample. for,
A circular gasket 7 is fixed to the gasket 4 to seal the space where the spring 6 is present.

8 is a circular threading stand whose tip 81 is press-fitted into the insertion hole 1d1, and has a step 82 formed on the outer periphery, and circular notches 83 and 84 at the rear end for inserting the thread. A hollow hole 85 is provided.

A circular gasket 9 seals the inside of the main body frame 1, and is fixed to the stepped portion 82.

Reference numeral 10 denotes a thread that holds down the case 2 from sliding in the direction A7i by the spring 6, and is pulled out from the recess 26 to form the notch 2.
2. 83, 84, and 23 and are again fixed in the recess 26.

Reference numeral 11 denotes a back cover having a convex portion 111 that is fitted into a fitting groove 1e on the inner periphery of the rear end of the main body frame 1;
The rear end portion is made flexible, and a power supply battery 12 for a switch circuit 13 and a heating filament 15, which will be described later, provided in the main body frame 1 is housed.

Reference numeral 13 denotes a switch circuit, which closes the switch only while receiving a command radio wave sent from the outside and allows current to flow from the battery 12 to a filament 15, which will be described later, and is provided in the main body frame 1.

141.142 is the filament 15 in the hollow hole 85
A conductive support that supports the substrate 14 by soldering.
is attached to.

The substrate 14 is connected to the current supply terminal 1 provided in the switch circuit 13.
It has insertion holes 143 and 144 that are press-fitted at 31° 132, and is detachably attached to the switch circuit 13.

16 is a circular spacer that sets the position of the filament 15 so that it just contacts the thread 10.

Note that the current supply terminals 131, 132 and the support body 141°14
2 are connected by corresponding printed wiring provided on the board 14.

Then, the current supply terminals 131 and 132 and the support body 141,
142 is not soldered to prevent poor contact with the board 14.

Next, the manner of use of the medical capsule configured as described above will be explained.

(See Figures 1 and 2) This capsule is put into the body by swallowing, etc., and when it reaches a predetermined sampling location, a signal is generated from outside the body to operate the switch circuit 13, which connects the battery 12 and the current supply terminal 131. , 132 and filament 1
Apply current to 5.

Therefore, the thread 10 is heated and cut, and the case 2 becomes the spring 6.
It is pushed by the spring force of and slides along the inner periphery of the outer cylinder 5 in the direction A along with the packing 7.

At this time, since the hollow part in the case 2 is in a reduced pressure state, the body fluid passes through the opening made by the pair of support parts 52, passes through the sampling hole 24, and is sucked into the hollow part.

Next, the gasket 3 at the tip of the case 2 is attached to the lid 51.
The sampling hole 24 is completely sealed by being press-fitted into the recess 511.

In this way, the capsule that has inhaled internal fluids is expelled from the body, but it is preserved without undergoing any chemical changes during this process.

That is, the hollow part inside the case 2 is
Because it is sealed, no chemical changes occur during the process within the body.

The seals 7 and 4 seal the space where the spring 6 is present when the case 2 is held still by the thread 10.
The seal 4 prevents other body fluids from entering the capsule until it reaches the collection site, and the seal 4 prevents the collected fluid from leaking out of the capsule if it enters the space where the sliding part of the case 2, the inside, and the spring 6 exist. This makes it easier to slide on the inner periphery of the outer cylinder 5.

As is clear from the above description, the medical capsule of the present invention is constructed so that the various gaps created when the case is stationary or moving are completely sealed with a gasket, so that the collected sample does not leak. In addition, there is no risk of contamination with unnecessary body fluids.

Furthermore, the operating mechanism for collecting the sample inside the capsule is not limited in any way, and can be applied to various types of capsules.

[Brief explanation of drawings]

The drawings show one embodiment of the medical capsule of the present invention, and FIG. 1 is an overall sectional view of the capsule, and FIG. 2 is a partial sectional view taken along the line ■-■ in FIG. 1. 1... ...Body frame, 2...Case,
3, 4... Packing, 5... Outer tube, 51... Lid, 511... Recess, 6.
·····Spring.

Claims (1)

[Claims] 1 A main body frame that houses a filament, a switch circuit that controls the energization of this filament, and a battery, and a first packing that is slidably held on the inner periphery of an outer cylinder formed as an extension of this main body frame. a cylindrical case, a second gasket provided at the distal end of the case, a circular lid formed at the distal end of a support portion formed by cutting out a portion of the distal end of the outer cylinder; A spring press-fits the tip into a circular recess provided inside the lid and biases the second gasket to seal the lid and the case; A thread stretched between the case and the main body frame so as to hold the filament in contact with the filament, and a thread between the inside of the main frame that stores the filament and the collection chamber on the supporting part side. and a third gasket for sealing the medical capsule.