JPS6143059B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a medical capsule for collecting a sample while in a living body.

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.

Conventional prototype medical capsules have a structure in which a valve is attached directly to the sample collection hole and the valve is held down with a leaf spring, etc., so a good seal cannot be obtained and the sample may leak after collection. There was a risk that unnecessary bodily fluids, etc. might get mixed in.

This invention was made in order to eliminate the above-mentioned drawbacks, and has a recess into which the cylindrical tip is inserted into a member that moves relative to a cylindrical case with a sampling hole provided on the end surface of the tip. To provide a medical capsule with a simple structure in which the tip of the case is tightly inserted into the recess to close the collection hole after the collection operation, and the collected sample can be reliably sealed. The purpose is to

This invention will be explained based on the drawings. In FIGS. 1 and 2, numeral 1 denotes a cylindrical main body frame in which stepped portions 1a, 1b and a fitting groove 1c are formed along the outer periphery; A holding portion 1d having an insertion hole 1d1 is provided at the leading end, and a fitting groove 1e is provided along the inner periphery at the rear end. 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, notches 22 and 23 for threading the thread and a hole 24 for collecting samples are provided, and a step 25 is provided along the inner circumferential surface. It is slidably fitted onto the inner circumferential surface of the tube 5 via a sealing gasket 4, which will also be described later.

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

Reference numeral 5 denotes a cylindrical outer cylinder, on the outer periphery of the front part there is a pair of pillars 52 that support a circular lid 51, and on the inner periphery of the rear part there is provided a convex part 53 that is fitted into the fitting groove 1c. The front half of frame 1 is suppressed.

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.

The case 2 is placed between the stepped portion 25 and the stepped portion 1a.
A circular spring 6 is provided which moves in the direction to create a hollow space for storing the sample, and a circular gasket 7 is fixed to the stepped portion 25 together with the gasket 4 to seal the space where the spring 6 is present. There is. 8
is a cylindrical 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 for threading the thread at the rear end. 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. 10
is a thread that suppresses the sliding of the case 2 in the direction A by the spring 6, and is pulled out from the recess 26, inserted into the notches 22, 83, 84, and 23, and then stopped by the recess 26 again. Reference numeral 11 denotes a back cover having a convex portion 111 that is fitted into the fitting groove 1e on the inner periphery of the rear end of the main body frame 1, which serves to protect the rear end of the main body frame 1 and is provided inside the main body frame 1. It also houses a power supply battery 12 for a switch circuit 13 and a heating filament 15, which will be described later. 13 closes the switch only while receiving command radio waves sent from the outside, and the battery 12
This is a switch circuit that causes a current to flow from the filament 15 to the filament 15, which will be described later, and is provided in the main body frame 1. 141 and 142 are conductive supports that support the filament 15 in the hollow hole 85 by soldering, and are attached to the substrate 14. The board 14 has insertion holes 143 and 14 that are press-fitted into current supply terminals 131 and 132 provided in the switch circuit 13.
4, and is detachably attached to the switch circuit 13. Reference numeral 16 denotes a circular spacer for setting the filament 15 so that it is in direct contact with the yarn 10.

Note that the current supply terminals 131 and 132 and the support body 1
41 and 142 are connected by corresponding printed wiring provided on the board 14. The current supply terminals 131, 132 and the supports 141, 142 are soldered to prevent poor contact with the substrate 14.

Next, the manner of use of the medical capsule configured as described above will be explained. (See Figures 1 and 2.) When 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 are connected, and a current is passed through the filament 15. Therefore, the thread 10 is heated and cut, and the case 2 is pushed by the spring force of the spring 6 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 pillars 52 and is sucked into the hollow part through the sampling hole 24.

Next, insert the gasket 3 at the tip of the case 2.
is press-fitted into the recess 511 of the lid 51, and the sampling hole 24 is completely sealed.

In this way, the capsule that has inhaled internal fluids is expelled from the body, but during this process, it is preserved without undergoing any chemical changes. That is, since the hollow part inside the case 2 is sealed by the gaskets 3, 4, and 9, no chemical changes occur during the process inside the body.

The seals 7 and 4 are used to seal the space where the spring 6 is present when the case 2 is held still by the string 10, to prevent other body fluids from entering until the sample is taken to the collection site. Also, while the case 2 is sliding, the packing 4 prevents the collected liquid that has entered the space where the spring 6 is present from leaking to the outside of the capsule, and also makes it easy to slide on the inner periphery of the outer cylinder 5. It is something to do.

As is clear from the above description, the medical capsule of the present invention has very high sealing performance because the case 2 is press-fitted into the recess 511 of the lid 51 via the packing 5 by the spring force of the spring 6. Even if an abnormal force is applied to this capsule after sealing, the lid 51 will not come off from the case 2, and the collected sample will not leak outside.

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

[Brief explanation of the drawing]

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

Claims (1)

[Claims] 1 A main body frame having a cylindrical shape, a battery and a switch circuit provided at one end of the main body frame, a heating filament provided within the main body frame, and a sliding member attached to the outer periphery of the other end of the main body frame via a spring. A movable cylindrical case,
a gasket provided at an end of the cylindrical case; a thread attached to the cylindrical case to join the heating filament and to lock the cylindrical case at a predetermined position on the main body frame; The body frame includes a circular lid integrally formed to protrude from the other end of the main body frame, and an insertion hole formed in the cylindrical case, and when the switch circuit is activated to heat the heating filament, the thread A medical capsule characterized in that the cylindrical case is cut and the cylindrical case is slid to collect body fluid from the insertion hole, and the gasket of the cylindrical case is in close contact with the circular lid.