JPH0572400U - Sample container punch - Google Patents

Abstract

(57) [Abstract] [Purpose] There is no variation in centering between the perforating needle and the thin film of the sample container, and the thin film can be surely perforated by the perforating needle. To provide a perforator for a sample container that does not damage it. A guide cylinder having an inner diameter capable of accommodating the tip of a sample container, a guide cylinder having an opening / closing opening, and a piercing needle, and a slit penetrating a wall of the guide cylinder is formed. Insert the sample container into the guide tube through the inlet / outlet opening. The guide cylinder restrains the entire circumference of the sample container and guides the entrance of the sample container. The piercing needle pierces the thin film of the sample container and pierces the sample container, and the tip of the sample container is opened so that the sample suspension can be poured out. When cleaning the piercing needle, the cleaning liquid is supplied from the inlet / outlet opening of the guide cylinder. The cleaning liquid after cleaning the perforating needle is guided to the slit and discharged to the outside.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a perforator for a sample container used when breaking through a thin wall at the tip of a sample collection container containing a test liquid to open the sample container.

[0002]

[Prior Art]

 Since the blood and feces of the living body reflect the physiological and pathological states well, it is often used as a sample when non-invasively testing the physiological and pathological state of the living body. Although such blood and feces are excellent specimens, they may be odorous or leak to the surrounding environment, so their handling is complicated and requires caution. When using blood or feces as a sample, the collected sample is usually suspended in the test solution and stored in a container. Then, at the time of inspection, the container is opened, the suspension of the sample is poured out, and the inspection is performed with the inspection device.

A sample container 101 for containing such a sample suspension is usually provided with a container body 102 for containing the sample suspension 100 as shown in FIG. The open end is closed with a plug 103, the tip of the container body 102 is closed with a thin film 104, and when the suspension 100 is taken out from the container body 102, the thin film 104 is pierced with a needle or the like. The container is opened, and the suspension 100 in the container body 102 is filtered through a filter 105, poured out from the opening formed in the thin film 104, and hung on an inspection device.

As a perforator used when the thin film 104 is pierced to form an opening, a perforator as shown in FIGS. 14 and 15 is conventionally used. That is, the conventional perforator 110 has a guide part 111 and a perforation needle 112 fixed to the tip of the guide part 111, as shown in FIGS. 14 and 15. The guide part 111 has a gutter-like shape such that the cylinder is vertically divided into two along the centerline direction. The gutter-shaped guide part 111 guides the container body part 102 of the test container 101 and the thin film at the tip. 104 is configured to advance toward the piercing needle 112.

[0005]

[Problems to be solved by the device]

 As described above, since the conventional perforator 110 includes the gutter-shaped guide portion 111 and the closing surface 113 having the perforation needle 112 that closes the tip of the guide portion 111, the guide portion 111 has a container body of the sample container. Even when receiving and guiding 102, since the upper half of the container body is exposed from the guide portion 111 and is not restrained at all, the centering variation between the perforation needle 112 and the thin film 104 of the sample container 101 occurs during perforation, and the thin film An accident may occur in which a hole other than 10 4 is punched, and since the piercing needle 112 is exposed in the groove of the interior 111, the piercing needle 112 is a part of the operator's finger or other body part. There is a risk of an accident that could cause injury due to contact with. Further, when cleaning the perforation needle 112 of the perforator after a plurality of perforation operations, it is difficult to concentrate the cleaning water on the perforation needle 112, and the flow of the cleaning liquid after the perforation needle 112 is cleaned. An accident may occur in which the direction is not constant and the particles scatter in the surrounding environment.

From the above, it is possible to guide the sample container toward the perforation needle 112 more reliably when the sample container is perforated, and therefore the centering between the perforation needle and the thin film 104 of the sample container 101 varies. The perforation needle 112 ensures that the thin film 104 can be perforated, and the perforation needle is not exposed to the outside. Therefore, the operator's finger or body may be touched and damaged. In addition, the cleaning water can be concentrated and supplied to the perforation needle when cleaning the perforation needle, and the cleaning water after cleaning can be guided in a certain direction and scattered into the surrounding environment to contaminate it. It is desired to develop a perforator for specimen containers that does not have this.

The present invention has been made in view of the above circumstances, and can more surely guide the sample toward the perforation needle when the sample container is perforated, and thus the perforation needle and the sample container There is no variation in centering with the thin film, the thin film can be surely punched by the piercing needle, and the piercing needle is not exposed to the outside. There is no risk of touching and damaging it, and when cleaning the perforation needle, the cleaning water can be concentrated and supplied to the perforation needle, and the cleaning water after cleaning can be guided in a certain direction to the surrounding environment. It is an object of the present invention to provide a perforator for a test container that does not scatter and contaminate it.

[0008]

[Means for Solving the Problems]

 For this purpose, the sample container perforator of the present invention has an inner diameter capable of accommodating the tip portion of the specimen container for accommodating the specimen to be perforated in the center line direction, and the tip is provided at one end portion in the center line direction. A guide tube having an inlet / outlet opening into which the portion can be inserted and a piercing needle fixed to the other end of the guide tube are provided, and the tip of the piercing needle is located in the guide tube along the center line. It is characterized by protruding toward.

[0009]

[Action]

 When opening the sample container, insert the sample container into the guide tube from its tip through the inlet / outlet opening of the guide tube of the sample container punch. The guide tube restrains the entire circumference of the sample container and guides the entrance of the sample container. At the final stage of entry of the sample container, the tip of the sample container comes into contact with the perforation needle, the perforation needle breaks through the thin film of the sample container and perforates, and the tip of the sample container is opened and the sample suspension is poured out. It becomes possible.

The periphery of the piercing needle is surrounded by the wall of the guide cylinder and is not exposed to the outside. When cleaning the perforation needle, when the cleaning liquid is supplied from the inlet / outlet opening of the guide cylinder, the cleaning liquid is guided to the inner surface of the guide cylinder and the cleaning liquid reaches the perforation needle and cleans the perforation needle. After cleaning the perforation needle, the cleaning liquid is guided to a slit penetrating the wall of the guide cylinder located around the perforation needle and discharged to the outside.

[0011]

【Example】

 Hereinafter, the details of the present invention will be described with reference to the drawings showing one embodiment. 1, FIG. 2, FIG. 3 and FIG. 4, 1 is a sample container punch. The sample container perforator 1 includes a guide tube 2 and a perforation needle 3. The guide tube 2 is configured by connecting a large diameter portion 5, an intermediate diameter portion 6, and a small diameter portion 7 which are adjacent to each other in the direction of the center line 4 with a shoulder portion 8 and a shoulder portion 11 as boundaries.

The base end of the large-diameter portion 5 is open to form an inlet / outlet opening 12 into which the sample container 101 can be inserted. As shown in FIG. 5, the large-diameter portion 5 has a cylindrical shape, and the inner surface thereof has a shape similar to the corresponding portion 114 of the sample container 101 to be inserted, and slightly larger than the corresponding portion 114. Has a large inner diameter. A slit 14 is formed in the large-diameter portion 5 in the direction of the center line 4, and penetrates the inside and outside of the wall of the large-diameter portion 5.

The intermediate diameter portion 6 has a cylindrical shape whose inner surface 15 has a cross-sectional shape almost similar to the corresponding portion 115 of the sample container 101 to be inserted, and has an inner diameter slightly larger than the corresponding portion 115. There is. As shown in FIG. 6, the small-diameter portion 7 has an inner surface 16 having a cross-sectional shape similar to the corresponding portion 116 of the sample container 101 and having an inner diameter capable of sliding in a state where the corresponding portion 116 is substantially in close contact. The piercing needle 3 projects from the tip of the small diameter portion 7 in the direction of the central axis 4. As shown in FIG. 7, the base portion 17 of the piercing needle 3 is formed to have a large diameter, and is fixed to the tip of the small diameter portion 7 by insert molding to close the tip of the small diameter portion 7 to the tip of the small diameter portion 7. It is attached so that the tip 21 of the piercing needle 3 projects inside the tip of the small diameter portion 7.

A plurality of slits 22 are formed in the small diameter portion 7 in the direction of the center line 4, and the slits 22 penetrate the inside and outside of the wall of the small diameter portion 7. The base end portion 26 of the large diameter portion 5 is provided with a rectangular flange 23 for preventing the inner cylinder 2 from rolling.

8 to 12 show a perforator 1b according to another embodiment of the present invention. In the perforator 1b according to the other embodiment, a protective cylinder 24 is coaxially formed around the small diameter portion 7. The protection tube 24 is formed in a tubular shape and is fixed to the guide tube 2 while maintaining an annular space 25 between the protection tube 24 and the small diameter portion 7. The base end of the protection cylinder 24 is connected to the guide cylinder 2 and is closed, and the tip end 27 of the protection cylinder 24 is open.

Next, the operation of piercing and opening the sample container using the piercer having such a configuration will be described. In the case of the perforator according to the first embodiment shown in FIGS. 1 and 2, the tip of the sample container 101 to be perforated is inserted from the inlet / outlet opening 12 of the large diameter portion of the perforator 1. The outer peripheral surface of the container body 102 of the sample container 101 is completely restrained and guided by the guide tube 2, and reaches the small diameter portion 7 from the large diameter portion 5 through the intermediate diameter portion 6.

The tip of the sample container 101 abuts the perforation needle 3, and by further pushing the sample container 101, the perforation needle 3 breaks through the thin film 104 of the sample container 101 and perforates, so that the suspension liquid can be poured out. Become. When this state is reached, the sample container 101 is pulled out from the perforator 1, brought to the inspection device, and the suspension is poured out. Even during such a piercing operation, the piercing needle is covered with the small diameter portion 7 and is not exposed to the outside, so that the operator's finger does not touch the piercing needle.

When the sample container 1 is inserted into the guide tube 2, the air inside the guide tube 2 escapes to the outside through the slit 14, so that the air inside the guide tube 2 is not compressed, and the sample container 101 is not compressed. Insertion is done smoothly. When the perforating needle 3 is washed after a plurality of perforations, a cleaning liquid is introduced into the guide tube 2. Since the cleaning liquid is guided by the guide cylinder 2 and concentratedly supplied to the perforating needle 3, the cleaning can be effectively performed with a small amount of cleaning liquid. Since the cleaning water after cleaning is guided and flows out from the slit 22 of the small diameter portion 7, the cleaning water does not spatter in an unexpected direction and contaminate the surrounding environment.

Next, in the case of the perforator 1b according to another embodiment, even if the internal pressure is applied to the sample container 101 and the suspension of the suspension liquid in the sample container 101 bursts due to the perforation, the protective cylinder 24 is Controls the scattering of burst suspensions. Therefore, the burst suspension does not adhere to the operator's fingers or the like.

[0020]

[Effect of the device]

 As described above, according to the perforator for a sample container of the present invention, the sample can be more reliably guided toward the perforation needle when the sample container is perforated, and thus the centering between the perforation needle and the thin film of the sample container varies. The puncture needle ensures that the thin film can be punctured, and the puncture needle is not exposed to the outside, so there is no risk of touching the operator's finger or body and damaging it. Furthermore, when cleaning the perforation needle, the cleaning water can be concentratedly supplied to the perforation needle, and there is no risk that the cleaning water after cleaning will be guided in a certain direction and scattered into the surrounding environment to contaminate it. .

[Brief description of drawings]

1 is a front view of a punch

FIG. 2 is a vertical sectional view of a punch.

FIG. 3 is a right side view of the punch.

FIG. 4 is a left side view of the punch.

5 is a sectional view taken along line VV in FIG.

6 is a sectional view of a VI-VI portion in FIG.

FIG. 7 is an enlarged vertical cross-sectional view of the small diameter portion in FIG.

FIG. 8 is a front view of a punch according to another embodiment.

FIG. 9 is a vertical sectional view of a punch according to another embodiment.

FIG. 10 is a right side view of a punch according to another embodiment.

FIG. 11 is a left side view of a punch according to another embodiment.

FIG. 12 is a sectional view taken along line XII-XII in FIG.

FIG. 13 is a vertical cross-sectional view of a sample container

FIG. 14 is a front view of a conventional punch.

FIG. 15 is a side view of a conventional punch.

[Explanation of symbols]

 1, 1b Sample container perforator 2 Guide tube 3 Perforation needle 4 Center line 5 Large diameter part 6 Intermediate diameter part 7 Small diameter part 8 Shoulder part 11 Shoulder part 12 Entry / exit opening part 14 Slit 15 Inner surface 16 Inner surface 17 Base part 21 Tip 22 22 Slit 23 Collar 24 Protective Cylinder 25 Annular Gap 26 Base End 100 Suspension 101 Specimen Container 102 Container Body 103 Stopper 104 Thin Film 105 Filter 110 Puncher 111 Guide Part 112 Drilling Needle 113 Closing Face 114 Corresponding Part 115 Corresponding Part

Claims (3)

[Scope of utility model registration request] 1. A guide tube having an inner diameter capable of accommodating a tip portion to be bored in the center line direction of a specimen container for accommodating a specimen and having an inlet / outlet opening portion into which the tip portion can be inserted at one end portion in the center line direction. And a piercing needle fixed to the other end of the guide cylinder, wherein a tip of the piercing needle projects in the guide cylinder along the center line toward the inlet / outlet opening. A sample container punch. 2. The perforator for a sample container according to claim 1, wherein a slit penetrating a wall of the guide cylinder near the perforation needle is formed. 3. The sample container perforator according to claim 1, wherein a cylindrical body is provided outside the slit with a radial gap from the outer surface of the wall of the guide cylinder.