JP7806437B2 - Saliva collection container set - Google Patents

Description

The present invention relates to a saliva collection container set for DNA analysis that allows subjects to collect saliva themselves and can be adapted for delivery, such as by mail, after collection.

In recent years, the novel coronavirus (COVID-19) has become a global pandemic, and PCR tests are widely used as one of the tests to determine whether or not a person is infected. In PCR tests, samples are obtained by swabbing the subject's nose and throat to collect mucus containing cells, or by collecting the subject's saliva.

In addition to testing for the new coronavirus, general PCR tests are also used to examine DNA for the risk of developing cancer and other diseases. Kits are now being provided for placing the subject's saliva in a container and sending it to a testing service institution.

The kit used for PCR testing involves placing saliva spit out by the subject into a special container, which the subject then caps, and transporting via mail or other means. There are also types in which, after the subject spits saliva into the special container, the saliva must be mixed with a chemical solution intended to inactivate any viruses contained in the saliva.

With this type of collection set, the subject must put the saliva and medication into the container and then close the cap themselves, so the cap must be used to stop the liquid from leaking.

When screwing a cap onto the mouth of a typical liquid container to seal the liquid, as is done with PET bottle caps, for example, an inner ring with a thin, tongue-shaped cross section is provided on the top of the cap, and the outer surface of this inner ring makes liquid-tight contact with the inner surface of the mouth of the liquid container.

The applicant of this application has also previously proposed an invention for a saliva collection container set for DNA analysis, and this saliva collection container set is shown in Patent Document 1. This set comprises a saliva receiver, a container body that collects and receives saliva poured into it from the saliva receiver, and a cap that is attached to and closes the opening of the container body after the saliva receiver has been removed, all of which are molded from synthetic resin material.

Furthermore, the cap contains a storage space surrounded by a cylindrical body and is provided with a drug solution storage section in which the lower part of the cylindrical body is closed with a resin laminated film containing aluminum foil, and a tear-off film member is removably arranged inside the container body to tear the film of the drug solution storage section when the cap is attached, thereby opening the drug solution storage section.
When the cap is attached to the attachment opening of the container body, the cylindrical body fits from above into the tearable film member that tears the film, and when the cap is removed from the container body, the tearable film member is removed from the container body along with the cap.

The caps used in these saliva collection container sets have a large space inside the cap for storing liquids such as medicinal solutions, so it may be difficult to install the inner ring described above on its own due to container size restrictions.

In the saliva collection container set described above, the cap has a liquid medicine storage compartment inside, and in order to stop the liquid from leaking, the upper part of the cylindrical wall that connects to the cap top plate is made thick, and its outer surface is in liquid-tight contact with the inner surface of the attachment opening of the container body. This prevents the mixture of saliva and liquid medicine from leaking out of the container body when it is closed with the cap.

JP 2016-211890 A

However, since the cap is molded from a synthetic resin material, shrinkage of the resin material causes sink marks on the upper part of the cylindrical wall, making it difficult to shape the outer surface of the upper part of the cylindrical wall appropriately.
Furthermore, if the attachment opening of the container body is closed with a cap that cannot reproduce the appropriate outer peripheral surface shape, there is a problem that liquid is likely to leak.

In light of the above circumstances, the present invention aims to prevent the occurrence of sink marks due to shrinkage of the synthetic resin material on the upper part of the cylindrical wall of the liquid medicine container in a cap for a saliva collection container set that has a liquid medicine container inside, thereby preventing liquid leakage from the container body closed with the cap.

The present invention has been made in consideration of the above-mentioned problems, and comprises: a container body having a saliva reservoir for storing saliva;
a cap for closing the attachment opening at the top of the container body;
The inside of the cap is provided with a medicinal solution storage section, which is made up of a cylindrical body continuous with the cap top plate and a film covering the lower opening of the cylindrical body, and contains the medicinal solution inside;
A tearable film member is disposed inside the container body, positioned above the saliva reservoir, and configured to allow saliva introduced from the attachment opening side to pass toward the saliva reservoir, and to tear the film of the medicinal solution storage section when the cap is attached to the attachment opening of the container body, allowing the medicinal solution to pass toward the saliva reservoir,
the upper end of the cylindrical body connected to the cap top plate has a sliding contact surface that is in sliding contact with the inner circumferential surface of the attachment opening of the container body, and a recessed portion is provided at the upper end of the cylindrical body at a portion that corresponds to the sliding contact surface ;
A tearable film member rotation prevention means is provided at the tearable film member arrangement position in the container body, and this tearable film member rotation prevention means is engaged with the tearable film member to regulate the axial rotation of the tearable film member along the cap rotation direction, and the tearable film member can be arranged from the attachment opening side to the tearable film member arrangement position,
The tear film member rotation prevention means is composed of a plurality of upwardly facing convex bodies each having a pointed wedge shape facing upward in the height direction of the container body, which are arranged at regular intervals in the circumferential direction of the container body at the tear film member arrangement position,
The tear film member has a downward convex body on the outer periphery, which is formed in a pointed wedge shape facing downward in the height direction of the container body and corresponds to the shape between adjacent upward convex bodies,
The above problem is solved by providing a saliva collection container set characterized in that the tearable film member is positioned at the tearable film member position so that the downward convex body enters between the upward convex body from above in the height direction of the container body, and the downward convex body engages with the upward convex body, restricting axial rotation along the cap rotation direction .

And, advantageously, the present invention provides a recessed portion on the outer periphery of the mounting opening of the container body at a height corresponding to the recessed portion on the upper end of the cylinder, so that the recessed portion on the upper end of the cylinder faces the recessed portion on the outer periphery of the mounting opening of the container body, with the sliding contact surfaces of the upper ends of the joined cylinders and the inner periphery of the mounting opening of the container body sandwiched between them.

Another advantage of the present invention is that when the cap is attached to the opening of the container body, it does not fit into the tearable film member placed inside the container body, and a gap is formed between the cap attached to the opening and the tearable film member in which the film torn by the tearable film member can be positioned.

According to the present invention, the recessed portion is provided at the upper end of the cylindrical body of the cap, in a portion corresponding to the sliding surface that contacts the inner peripheral surface of the attachment opening of the container body.
By providing this recessed portion, it becomes easy to thin the thickness of the upper end of the cylindrical body, which has the sliding surface as its outer surface, so that shrinkage after the cap is molded from a synthetic resin material by injection molding or the like does not occur at the upper end of the cylindrical body, and a cap that accurately reproduces the shape of the outer surface can be obtained.By using this cap, the liquid-stopping effect can be ensured after the attachment opening of the container body is closed.

Furthermore, according to the present invention, a recessed portion is provided on the outer periphery of the mounting opening of the container body at a height position corresponding to the recessed portion at the upper end of the cylindrical body, and the thickness of the mounting opening is reduced, thereby providing flexibility.
Caps are generally made from synthetic resin, and the cap in this saliva collection container set is also made from synthetic resin. Although the dimensions of the molded caps tend to vary, the opening deforms during the capping operation, absorbing the dimensional variations and stabilizing the cap tightening torque even when the dimensions are varied.

Furthermore, according to the present invention, the cap and the tearable film member are non-interlocking components when attached to the attachment opening of the container body. In other words, no additional structure or mechanism is required to pull up the tearable film member together with the cap when removing the cap from the container body, allowing the shape of the cap's cylindrical body and the shape of the tearable film member to be simplified. Furthermore, because there is no need to pull up the tearable film member together with the cap, many of the components that come into contact with the subject's saliva are left inside the container body, reducing the risk of the person conducting the test coming into contact with saliva.

In addition, according to the present invention, a means for preventing rotation of the tearable film member is provided on the inner peripheral surface of the container body at the position where the tearable film member is located, so that the tearable film member does not rotate when the cap is turned, ensuring that the film in the drug solution storage section can be reliably torn.

Furthermore, according to the present invention, the means for preventing rotation of the tearing film member comprises a plurality of upwardly facing convex bodies, each having a pointed wedge shape facing upward in the height direction of the container body, arranged at regular intervals around the circumference of the container body at the tearing film member arrangement position, and the tearing film member is provided with downwardly facing convex bodies on its outer periphery, each having a pointed wedge shape facing downward in the height direction of the container body, and corresponding to the shape between adjacent upwardly facing convex bodies around the circumference of the container body.
This makes it easier for the downward convex body of the tearable film member to be guided by the inclined side of the upward convex body on the container body side when the tearable film member is placed inside the container body, and the downward convex body of the tearable film member can smoothly fit between the upward convex bodies, preventing the tearable film member from being positioned inside the container body in an inclined state.

FIG. 1 is an explanatory diagram showing components of an example of a saliva collection container set according to the present invention in a separated state. 1 shows a saliva receiving device, where (a) is an explanatory diagram showing the state as seen from above, (b) is an explanatory diagram showing a cross section in the wide width direction, and (c) is an explanatory diagram showing a partial cross section in the narrow width direction. FIG. 2 is an explanatory diagram showing a cross section of the container body. FIG. 2 is an explanatory diagram showing a cross section of the cap. FIG. 4 is an explanatory cross-sectional view showing the state in which the cap is attached to the container body. FIG. 4 is an explanatory diagram showing an enlarged view of an upper end portion of a cylindrical wall of the cap, illustrating a recessed portion. This shows an example of a tearable film member, where (a) is an explanatory diagram showing the state as viewed from above, (b) is an explanatory diagram showing the state as viewed from the side, (c) is an explanatory diagram showing the state as viewed from below, and (d) is an explanatory diagram showing the state as viewed from diagonally above. The figures show the attachment and removal of the cap, with (a) being an explanatory diagram showing the state before the drug solution storage section is inserted into the attachment opening, (b) being an explanatory diagram showing the state after the cap has been attached to the attachment opening and the film has been broken, and (c) being an explanatory diagram showing the state after the cap has been removed after the drug solution has been discharged.

The present invention will now be described in detail based on the illustrated embodiments. Figure 1 shows a saliva collection container set 1 according to the present invention, with the components separated. As shown in Figure 1, the set comprises a saliva receiver 2, which is slightly flattened and funnel-shaped to make it easier for a person to place their mouth over it; a cylindrical container body 3, to which the saliva receiver 2 can be attached or detached; a tear-away film member 4 placed inside the container body 3; and a cap 5, which is attached to the top of the container body 3 and used to close the container body 3. Each of these components is made of synthetic resin.

(Saliva receiver)
The saliva receiver 2 is shown alone in Figure 2, and like the invention shown in Patent Document 1, a connection port 6 is provided at the bottom as the cylindrical part of a funnel. The top is made wide and flat in one direction to make it easy for a person (subject) to place it near their mouth, and the spat-out saliva is guided to the connection port 6.

In the example of the saliva receiver 2 shown in the figure, a guide tube 7 is integrally provided that covers the outer periphery of the connection port 6, forming a gap between it and the container body 3. When storing saliva in the container body 3, the connection port 6 of the saliva receiver 2 is inserted into the inside of the attachment port 8, which is the opening at the top of the container body 3, and the guide tube 7 slides against the male thread 9 located on the outer periphery of the container body 3, preventing the saliva receiver 2 from tilting relative to the container body 3. Note that the guide tube 7 is not necessarily required for attaching the saliva receiver 2 to the container body 3.

(Container body)
The connection port 6 of the saliva receiver 2 is provided so as to be insertable into and removable from the inside of the attachment port 8 of the container body 3 , and therefore the saliva receiver 2 is detachable from the container body 3 .

As shown in Figure 3, the container body 3 is connected to the lower part of the attachment opening 8 by a body 10 having a smaller diameter than the attachment opening 8. A mid-sole 11 with a downwardly convex vertical cross section is provided in the middle part of the body 10, and the area above the mid-sole 11 serves as a saliva (specimen) reservoir 12.

On the outer periphery of the portion of the body 10 corresponding to the saliva reservoir 12, there is a groove 13 that is used for positioning by an automatic machine that applies labels to the container body 3. This groove 13 is shaped like a groove that runs around the entire periphery of the container body 3.

The boundary between the attachment opening 8 and the barrel 10 of the container body 3 is a stepped portion formed by making the inner diameter of the barrel 10 smaller than the inner diameter of the attachment opening 8. A receiving step 14 is provided around the inner periphery at the stepped portion, consisting of a slope that slopes downward toward the center of the container body 3. The receiving step 14 is where the tearable film member 4 is placed, and the position where it is properly placed on this portion is the tearable film member placement position 15.

When the cap 5 is attached to the container body 3 with the tearable film member 4 positioned at the tearable film member position 15, the tearable film member 4 tears the film covering the storage space, allowing the stored medicinal liquid to flow out of the cap 5, as described below.

(cap)
As shown in FIG. 4 , the cap 5 has an outer peripheral wall 17 with a female thread 16 , and also has a drug solution storage section 18 arranged inside the cap 5 and surrounded by the outer peripheral wall 17 .
The drug solution storage section 18 has a storage space 22 surrounded by a cylindrical wall 21 of a cylindrical body 20 that is integral with a cap top plate 19 , and is closed by a film 23 attached to the lower edge of the cylindrical wall 21 .

In the saliva collection container set 1 of this embodiment, a medicinal liquid that is mixed with the saliva contained in the saliva reservoir 12 to inactivate viruses contained in the saliva is filled into the storage space 22 before sealing with the film 23. After filling, the film 23 is sealed along the lower edge of the cylindrical wall 21 to form the medicinal liquid storage section 18 with the medicinal liquid sealed inside.

With the saliva collection container set 1, after the subject spits out saliva, the saliva receiver 2 is removed, and then the cap 5 is attached to the top of the container body 3 and the attachment opening 8 is closed, thereby breaking the film 23 of the medicinal solution storage section 18.

The device is also designed to prevent the mixture of saliva in the saliva reservoir 12 and the medicinal liquid that has flowed down from the medicinal liquid storage section 18 from leaking out. The shape of the tearing film member 4 that tears the film 23 will be described later.

5 and 6 show the state in which the mounting opening 8 is closed with the cap 5. As shown in the figures, except for the upper end 24 of the cylindrical wall 21, there is a gap between the cylindrical wall 21 and the inner surface of the container body 3, and the cylindrical wall 21 is not in contact with the inner surface of the container body 3.
The outer peripheral surface (on the outer peripheral wall 17 side) of the upper end 24 of the cylindrical wall 21 is a sliding surface 26 that contacts the inner peripheral surface 25 of the mounting opening 8 of the container body 3 in a liquid-tight manner, and this upper end 24 itself is a part that plays a role in stopping liquid, similar to the inner ring of a PET bottle cap, etc.

(Cap recessed area)
This embodiment of the present invention is devised to properly stop the liquid with the upper end 24 of the cylindrical wall 21. This devise is shown in Figure 5, in which the portion of the cap top plate 19 along the position of the upper end 24 of the cylindrical wall 21 is recessed in a stepped shape downward, and this stepped portion and the upper end 24 form a groove-like recessed portion 27.

As shown in the cross section of the cap 5 in Figure 4, the recessed space of the recessed portion 27 is a recessed portion 28 formed adjacent to the upper end portion 24 in the cap radial direction and on the opposite side of the sliding surface 26.
4 to 6, the recessed portion 28 (void portion) for the recessed portion 27 is not located in the center of the recessed portion 27 but is located closer to the sliding surface 26. By locating the recessed portion 28 closer to the sliding surface 26, the thickness of the upper end portion 24 is set smaller than the thickness of the bottom plate portion 27a of the recessed portion 27 and the thickness of the vertical wall plate portion 27b facing the upper end portion 24 of the recessed portion 27.

In this way, the upper end 24, which has a smaller thickness, and the recessed portion 28 are positioned adjacent to each other in the cap's radial direction. This ensures that the sliding surface 26 of the cap 5 after molding is properly reproduced without any sink marks, preventing liquid leakage when the cap 5 is used to close the attachment opening 8 of the container body 3.

Furthermore, the thickness of the upper end 24 is thinner than the other two plate portions (bottom plate portion 27a, vertical wall plate portion 27b) in the recessed portion 27, making it easier to deform. Therefore, when the cap 5 is closed, the upper end 24 that abuts against the attachment opening portion 8 deforms, increasing the degree of tight contact, which is also effective in preventing liquid leakage.

(Thin part on the side of the container body's mounting opening)
A recessed portion 30 is also provided on the outer peripheral surface 29 of the mounting opening 8 of the container body 3. The recessed portion 30 is located at a height corresponding to the recessed portion 28 of the cap 5. As shown in Figure 6, the recessed portion 28 on the cap 5 side and the recessed portion 30 on the container body 3 side face each other, with the sliding surface 26 of the upper end 24 of the joined cylindrical wall 21 and the inner peripheral surface 25 of the mounting opening 8 of the container body 3 between them.

In this way, recessed portions 30 are formed on the outer surface 29 of the attachment opening 8, which makes sliding contact with the upper end 24 of the cylindrical wall 21, making the attachment opening 8 more flexible. Therefore, even if there is variation in the diameter of the upper end 24 of the cap 5, the attachment opening 8 deforms when the cap is closed, absorbing the variation in the diameter of each cap 5 and stabilizing the cap closing torque due to dimensional variations.

(Broken film member)
The tearable film member 4 is roughly cylindrical with a perforated interior, and has a flange 31 around its outer periphery that can be placed on the receiving step 14 of the container body 3, and a fitting cylindrical portion 32 extends downward from the position of the flange 31.

The fitting tube portion 32 is fitted into the upper part of the saliva reservoir portion 12, which has a smaller inner diameter than the receiving step portion 14. Furthermore, multiple anti-detachment ribs 33 are provided on the outer periphery of the fitting tube portion 32 to prevent the flange 31 from accidentally slipping out upward when supported by the receiving step portion 14 and positioned at the tear-off film member placement position 15.

In addition, an annular opening blade 34 is integrally formed on the upper part of the flange 31. As described above, the opening blade 34 is the part that tears the film 23 of the drug solution storage section 18 when the cap 5 is attached to the attachment opening section 8.

(Cylindrical body and tear film member - non-fitting)
The opening blade 34 is arranged so as not to interfere with the cylindrical body 20 of the drug solution storage section 18, the outer diameter of the opening blade 34 is smaller than the inner diameter of the cylindrical wall 21, and a sufficient gap 35 is provided between the cylindrical wall 21 and the opening blade 34 so that the cut film will not be pinched between them. A similar gap 35 is also formed between the lower end of the cylindrical wall 21 and the flange 31, so that the cylindrical body 20 will not push the breaking film member 4 further downward from the breaking film member arrangement position 15.

In this way, the cap 5 is attached to the container body 3 and the film 23 of the drug solution storage section 18 is torn by the opening blade 34, but the tearable film member 4 and the tubular body 20 of the cap 5 do not fit together when the cap 5 is attached to the container body 3. Therefore, in this embodiment, the tearable film member 4 is designed to remain inside the container body 3 when the cap 5 is removed from the container body 3.

(anti-slip structure)
The inner peripheral surface of the container body 3 at the film-breaking member placement position 15 is provided with a film-breaking member rotation prevention means 36 that restricts the axial rotation of the film-breaking member 4 inside the container body 3 to prevent it from spinning freely. The film-breaking member rotation prevention means 36 is made up of a plurality of upwardly facing convex bodies 37, each of which has a pointed wedge shape and faces upward in the height direction of the container body 3. The upwardly facing convex bodies 37 are arranged at regular intervals in the circumferential direction of the container body 3, at positions where they face the outer peripheral surface of the flange 31 of the film-breaking member 4, along the receiving step 14 of the container body 3. See Figure 3.

The tearable film member 4, which is supported by the receiving step 14 and positioned at the tearable film member position 15, is designed so that when it begins to rotate in the circumferential direction, the flange 31 engages with the upward protrusion 37 of the tearable film member rotation prevention means 36. The engagement of the flange 31 prevents the tearable film member 4 from rotating freely, and prevents it from rotating in conjunction with the rotation of the cap 5 in the closing or opening direction.

Figure 7 shows a flange 31 equipped with multiple downward protrusions 38 that engage with upward protrusions 37. The downward protrusions 38 are shaped like pointed wedges facing downward in the height direction of the container body, and are provided as downwardly convex triangles shaped so that they can be placed between adjacent upward protrusions 37 around the circumference of the container body 3.

When placing the tearable film member 4 at the tearable film member placement position 15 on the container body 3, the downward convex body 38 fits between the upward convex bodies 37, whose gaps gradually widen upward. Therefore, the tearable film member 4 can be smoothly placed at the tearable film member placement position 15 by dropping it from above in the height direction of the container body 3, and once placed, rotation of the tearable film member 4 in the axial direction is restricted.

In this way, the tearable film member rotation prevention means 36 consists of a row of multiple upwardly facing convex bodies 37, each shaped like a wedge, and the tearable film member 4 is arranged in between adjacent upwardly facing convex bodies 37 in the circumferential direction of the container body, and is provided with a locking member when moving in the circumferential direction of the container body. As described above, this has the effect of allowing the tearable film member 4 to be placed in the desired position with the simple operation of lowering it from the attachment opening 8 side of the container body 3.

(Attaching and removing the cap)
In the conventional saliva collection container set shown in Patent Document 1, the tearable film member is removed from the container body together with the cap, but as described above, in the saliva collection container set 1 of this embodiment, the tearable film member 4 remains on the container body 3 side.

8 shows the attachment and detachment of the cap 5 to the container body 3 in the saliva collection container set 1 of this embodiment. After the subject pours a required amount of saliva into the saliva reservoir 12 of the container body 3 and removes the saliva receiver 2, the cap 5 is placed over the attachment opening 8 of the container body 3 by inserting the medicinal solution storage section 18 into the inside of the attachment opening 8 (A).
Then, by rotating the cap 5 in the closing direction and lowering it, the film 23 of the medicinal solution storage section 18 is torn by the opening blade 34 of the tearing film member 4 located at the tearing film member arrangement position 15, and the stored medicinal solution A falls, passes through the inside of the tearing film member 4, enters the saliva storage section 12, and mixes with the saliva (b).

Figure 8 (b) shows the state in which the sliding surface 26 of the upper end 24 of the cylindrical wall 21 is in liquid-tight contact with the inner surface 25 of the attachment opening 8 of the container body 3, preventing liquid from entering. In the method of handling this saliva collection container set 1, the container body 3 with the attachment opening 8 closed with the cap 5 is now ready to be sent to a PCR testing facility. Then, at the PCR testing facility, only the cap 5 is removed (c).

The saliva collection container set 1 of this embodiment is designed to allow subjects who are unfamiliar with attaching the cap 5 to the container body 3 to rotate the cap 5 in the closing direction the appropriate amount and secure it in place.

Specifically, a boss 39 protrudes downward from the lower end of the outer wall 17 of the cap 5, and a flange 40 protrudes outward from the outer surface below the male thread 9 of the container body 3, and a claw-shaped first stopper 41 is provided on this flange 40 (see Figure 1).
When the subject closes the attachment opening 8 of the container body 3 with the cap 5, the boss 39 of the cap 5 abuts against the first stopper 41, thereby stopping the rotation of the cap 5 and preventing the cap 5 from being turned more than necessary.

The container body 3 also has a claw-shaped second stopper 42 protruding outward from a position above the flange 40. Furthermore, a recess (not shown) into which the second stopper 42 fits when the cap 5 abuts against the first stopper 41 and stops at the end of rotation in the closing direction is provided on the lower end of the outer wall 17 of the cap 5. If the closed cap 5 begins to rotate improperly in the opening direction due to vibration or other reasons, the second stopper 42 engages with the inner wall surface of the recess, preventing the cap 5 from loosening.

1... Saliva collection container set 2... Saliva receiver 3... Container body 4... Breakable film member 5... Cap 6... Connection port 8... Mounting port 10... Body 12... Saliva reservoir 15... Position of breakable film member 18... Medicinal solution storage section 19... Cap top plate 20... Cylinder 21... Cylinder wall 23... Film 24... Upper end 25... Inner peripheral surface of mounting port 26... Sliding surface 27... Recessed portion 28... Inner recessed portion of upper end 29... Outer peripheral surface of mounting port 30... Outer recessed portion of mounting port 31... Flange 32... Fitting cylinder portion 34... Opening blade 35... Gap 36... Means for preventing rotation of breakable film member 37... Upward convex body 38... Downward convex body A... Medicinal solution

Claims (3)

a container body having a saliva reservoir for storing saliva;
a cap for closing the attachment opening at the top of the container body;
The inside of the cap is provided with a medicinal solution storage section, which is made up of a cylindrical body continuous with the cap top plate and a film covering the lower opening of the cylindrical body, and contains the medicinal solution inside;
A tearable film member is disposed inside the container body, positioned above the saliva reservoir, and configured to allow saliva introduced from the attachment opening side to pass toward the saliva reservoir, and to tear the film of the medicinal solution storage section when the cap is attached to the attachment opening of the container body, allowing the medicinal solution to pass toward the saliva reservoir,
the upper end of the cylindrical body connected to the cap top plate has a sliding contact surface that is in sliding contact with the inner circumferential surface of the attachment opening of the container body, and a recessed portion is provided at the upper end of the cylindrical body at a portion that corresponds to the sliding contact surface ;
A tearable film member rotation prevention means is provided at the tearable film member arrangement position in the container body, and this tearable film member rotation prevention means is engaged with the tearable film member to regulate the axial rotation of the tearable film member along the cap rotation direction, and the tearable film member can be arranged from the attachment opening side to the tearable film member arrangement position,
The tear film member rotation prevention means is composed of a plurality of upwardly facing convex bodies each having a pointed wedge shape facing upward in the height direction of the container body, which are arranged at regular intervals in the circumferential direction of the container body at the tear film member arrangement position,
The tear film member has a downward convex body on the outer periphery, which is formed in a pointed wedge shape facing downward in the height direction of the container body and corresponds to the shape between adjacent upward convex bodies,
The saliva collection container set is characterized in that the tearable film member is positioned at the tearable film member position so that the downward convex body enters between the upward convex body from above in the height direction of the container body, and the downward convex body engages with the upward convex body, restricting axial rotation along the cap rotation direction . A saliva collection container set as described in claim 1, in which a recessed portion is provided on the outer periphery of the attachment opening of the container body at a height corresponding to the recessed portion on the upper end of the cylinder, so that the recessed portion on the upper end of the cylinder faces the recessed portion on the outer periphery of the attachment opening of the container body, with the sliding contact surfaces of the upper ends of the joined cylinders and the inner periphery of the attachment opening of the container body sandwiched between them. The saliva collection container set of claim 1 or 2, wherein the cap and the tearable film member disposed inside the container body are not interlocked when attached to the opening of the container body, and a gap is formed between the cap attached to the opening and the tearable film member to allow the film to be torn by the tearable film member to be positioned.