CN212698964U - Excrement collecting rod and excrement collecting pipe - Google Patents

Abstract

The application provides a stool sampling tube, which comprises a cylinder body, a stool sampling rod and a penetrating membrane. The tube body is formed by integrally molding an outer wall, a partition wall and a tube-shaped wall, and the feces collection rod is formed by a tip end portion, an expanded diameter portion and a base end portion. The top end of the excrement collecting rod penetrates through the hole of the partition wall of the barrel body, so that at least one groove of the excrement collecting rod is positioned in the dissolved liquid containing space of the barrel body, the side surface of the top end of the excrement collecting rod is tightly matched with the inner edge of the hole of the partition wall of the barrel body, the diameter expanding part of the excrement collecting rod is tightly matched with the cylindrical wall of the barrel body, and the partition wall, the cylindrical wall and the diameter expanding part of the excrement collecting rod form a closed excrement collecting space together. Therefore, quantitative excrement collection and excrement collection space for collecting redundant excrement are realized only by matching the barrel body and the excrement collection rod, the number of parts can be reduced, the cost is reduced, the assembly process during manufacturing is simplified, the operation convenience and safety during use can be improved, and the risk of leakage of dissolved liquid or excrement caused by loosening or falling of the parts is reduced.

Description

Excrement collecting rod and excrement collecting pipe

This application claims priority to the submission of the chinese patent office on 22/7/2019, application No. 201910659472.0, entitled "stool sampling tube," and the submission of the chinese patent application on 22/7/2019, 201921147642.9, entitled "stool sampling tube," the entire contents of which are incorporated herein by reference.

Technical Field

The application relates to a stool sampling rod and a stool sampling pipe, and belongs to the field of mechanical equipment.

Background

Feces excreted from animals including humans are very useful for occult blood tests, i.e., for diagnosing various diseases such as tumors in the lower digestive tract such as the large intestine, and therefore are widely used as clinical test samples. In the above diagnosis, it is necessary to quantitatively take the feces and buffer the feces in an appropriate liquid, and then to carry out a sample test.

In the prior art, in order to achieve a quantitative sampling of the feces and buffer it in a suitable liquid, a feces sampling tube having a feces sampling tube, a feces sampling rubber plug and a feces sampling head is used. The excrement picking rubber plug is inserted into the excrement picking pipe liquid pipe, and the excrement picking rod of the excrement picking head is penetrated and connected with the excrement picking rubber plug. When the excrement collecting device is used, an operator inserts the excrement collecting head after excrement collection into the excrement collecting pipe liquid pipe through the excrement collecting rubber plug, so that an excrement sample is soaked in an inspection solution, and redundant excrement samples are retained in the excrement collecting rubber plug.

However, the prior art also has the following technical problems. Firstly, the excrement collecting pipe is provided with an excrement collecting pipe liquid pipe, an excrement collecting rubber plug, an excrement collecting head and other parts, and the number of the parts is large during manufacturing, so that the cost is increased and the assembly process is complex. Moreover, if the excrement collecting rubber plug is loosened or separated from the excrement collecting pipe liquid pipe during use, the excrement collecting operation of an operator cannot be normally carried out, and even accidents such as leakage of inspection solution or excrement are caused.

SUMMERY OF THE UTILITY MODEL

In view of at least one of the above-mentioned technical problems occurring in the prior art, an object of the present application is to provide a feces collection tube that realizes quantitative feces collection with a simplified and reliable structure.

In order to achieve the above object, the present invention provides a feces collection tube comprising a cylindrical body, a feces collection rod and a penetrating membrane, wherein the cylindrical body is formed by integrally molding an outer wall, a partition wall and a cylindrical wall, the outer wall of the cylindrical body has a cylindrical shape, a first opening portion at an upper end and a second opening portion at a lower end, the partition wall of the cylindrical body is formed inside the outer wall so as to be perpendicular to an axial direction of the outer wall, the partition wall divides an internal space of the cylindrical body into an upper feces collection liquid accommodation space and a lower feces collection rod coupling space, the partition wall is provided with a hole, the cylindrical wall of the cylindrical body is formed inside the outer wall, and extends cylindrically from the partition wall to the feces collection rod coupling space so as to surround the hole, the feces collection rod is formed of a tip end portion, a diameter expansion portion and a base end portion, and the tip end portion of the feces collection rod has a cylindrical shape, at least one groove is arranged on the side surface, the diameter expanding part of the excrement collecting rod is formed between the top end part and the base end part, a diameter of the penetrating membrane is enlarged relative to a diameter of the distal end portion, the penetrating membrane is attached to an outer wall of the cylindrical body so as to close the first opening portion of the outer wall of the cylindrical body, the tip end portion of the feces collection rod is inserted from the second opening portion of the outer wall of the cylinder and passes through the hole of the partition wall of the cylinder, so that the at least one groove of the excrement collecting rod is positioned in the dissolved solution accommodating space of the cylinder body, the side surface of the top end part of the excrement collecting rod is tightly matched with the inner edge of the hole of the partition wall of the barrel body, and the diameter-expanding part of the excrement collecting rod is tightly matched with the cylindrical wall of the cylinder, and the partition wall and the cylindrical wall of the cylinder and the diameter-expanding part of the excrement collecting rod form a closed excrement collecting space together.

According to the excrement collecting pipe, only the barrel and the excrement collecting rod are matched with each other, the quantitative excrement collecting space for collecting redundant excrement is realized, the number of parts can be reduced, the cost is reduced, the assembly process during manufacturing is simplified, the operation convenience and safety during use can be improved, and the risk of leakage of dissolved liquid or excrement caused by loosening or falling of the parts is reduced.

The excrement collection tube may further include: the outer wall of the cylinder includes an internal thread portion having an internal thread formed on an inner surface thereof, the internal thread portion being located at a portion of the inner surface of the outer wall near a lower end, the base end portion of the fecal sampling rod includes an external thread portion having an external thread formed on an outer side surface thereof, the external thread portion being located at least in part on an outer side surface of the cylindrical base end portion, and a portion of the tip end portion of the fecal sampling rod, in which the at least one groove is formed, passes through the hole of the partition wall of the cylinder and enters the dissolved solution accommodation space of the cylinder by being screwed to the external thread portion of the fecal sampling rod through the internal thread portion of the cylinder.

Therefore, the excrement collecting groove penetrates through the hole of the partition wall of the cylinder body and enters the dissolved liquid containing space through the mutual screwing of the cylinder body and the excrement collecting rod, the process can be more stable, more reliable quantitative excrement collection is realized, and the dissolved liquid can be prevented from splashing when the cylinder body and the excrement collecting rod are separated.

The excrement collection tube may further include: an inner diameter of a cylindrical wall of the cylinder is larger than a diameter of the hole of the partition wall of the cylinder, an inclined portion is integrally formed from an inner side surface of the cylindrical wall toward an edge of the hole of the partition wall in the vicinity of an upper end of the cylindrical wall, a sharp corner portion is formed at a topmost end of the distal end portion of the stool collection stick, and an inclination angle of the inclined portion is the same as an inclination angle of the sharp corner portion of the stool collection stick.

Therefore, in the process of inserting the excrement collecting rod into the barrel, the sharp corner part of the excrement collecting rod, the inclined part of the barrel and the hole of the partition wall form an excrement scraping area together, excrement attached to the sharp corner part of the excrement collecting rod is reliably scraped in the excrement scraping area after the excrement is inserted, redundant excrement can be prevented from entering the dissolving liquid containing space, and the quantitative property is further improved.

The excrement collection tube may further include: the outer wall of the cylindrical body, the hole of the partition wall, and the cylindrical wall are integrally molded coaxially, the outer wall of the cylindrical body, the hole of the partition wall, and the cylindrical wall are coaxially arranged with a distal end portion, the diameter-enlarged portion, and the base end portion of the fecal sampling rod in a state where the female screw portion of the cylindrical body and the male screw portion of the fecal sampling rod are screwed with each other, a diameter of the diameter-enlarged portion of the fecal sampling rod on a side close to the distal end portion is equal to or less than a diameter of the base end portion, a diameter of the diameter-enlarged portion of the fecal sampling rod on a side close to the distal end portion is smaller than an inner diameter of the cylindrical wall of the cylindrical body, and a diameter of at least a part of the structure of the diameter-enlarged portion on a side close to the base end portion is larger than an inner diameter of.

Thus, the excrement collecting rod having the enlarged diameter portion of the above shape can be reliably and closely fitted to the cylindrical wall of the cylindrical body to form a closed excrement collecting space, and the enlarged diameter portion of the excrement collecting rod can be easily fitted to the cylindrical wall of the cylindrical body, thereby further improving the ease of operation.

The excrement collection tube may further include: at least a portion of the structure of the top end of the fecal sampling rod has a diameter that is greater than the diameter of the bore of the barrel spacer wall, whereby the at least a portion of the structure of the top end forms an interference fit with the bore of the spacer wall.

Thus, the dissolution liquid contained in the dissolution liquid containing space can be reliably prevented from leaking into the excrement collecting space by the interference fit between the tip end portion of the excrement collecting rod and the hole of the cylindrical body.

The excrement collection tube may further include: an annular convex part is formed on the side of the diameter-expanded part of the excrement collecting rod close to the base end part, and the diameter of the annular convex part is larger than the inner diameter of the cylindrical wall of the cylinder, so that the annular convex part and the cylindrical wall of the cylinder form interference fit.

Thus, even if the solution contained in the solution containing space has leaked to the feces collecting space, the solution can be reliably prevented from continuously leaking to the feces collecting stick combining space by the interference fit between the annular convex part and the cylindrical wall of the cylinder.

The excrement collection tube may further include: in a state where the internal thread portion of the cylinder and the external thread portion of the stool collection rod are screwed with each other, an interference fit is formed between the internal thread portion of the cylinder and the external thread portion of the stool collection rod.

Thus, even if the solution contained in the solution containing space has leaked to the feces collecting space through the feces collecting space, the solution can be reliably prevented from continuing to leak to the outside by interference fit between the female screw portion of the cylinder and the male screw portion of the feces collection stick.

The excrement collection tube may further include: the length of the excrement collecting space along the inserting direction of the excrement collecting rod is longer than the length of the excrement collecting rod in the largest excrement collecting range.

Therefore, the excrement collecting space with the effective length larger than the largest excrement collecting range of the excrement collecting rod can be formed after the excrement collecting rod is matched with the barrel, the surplus length is reserved, and the sufficient excrement collecting space is ensured.

The excrement collection tube may further include: the diameter of the hole of the partition wall of the cylinder is smaller than the minimum hole diameter through which the solution contained in the solution containing space closed by the penetrating membrane can leak out.

Therefore, even if the excrement collecting rod is separated from the cylinder body, the dissolved liquid contained in the dissolved liquid containing space can not leak, and the operation convenience and the safety are further improved.

The excrement collection tube may further include: two grooves are formed in a side surface of the distal end portion of the fecal sampling rod, the two grooves are arranged in the same circumferential direction of the distal end portion along the axial direction of the distal end portion, a grip head is further formed below the proximal end portion of the fecal sampling rod, a fecal sampling rod indicating portion is formed in a part of a side surface of the grip head, a label is attached to at least a part of the outer wall of the cylinder, a cylinder indicating portion is formed in a part of the label, the fecal sampling rod indicating portion of the grip head and the two grooves of the distal end portion have the same circumferential direction, and the fecal sampling rod indicating portion of the grip head and the cylinder indicating portion of the label are circumferentially aligned with each other in a state where the internal thread portion of the cylinder and the external thread portion of the fecal sampling rod are completely screwed with each other.

Therefore, the user can be effectively prompted, and the situation that excrement is not fully collected or excrement is not collected due to inaccurate taking position of the user is avoided. Moreover, the user can be effectively prompted whether the excrement collecting rod is completely screwed (screwed) with the barrel, and liquid leakage and the like caused by the fact that the excrement collecting rod is not screwed with the barrel by the user are prevented.

The excrement collection tube may further include: the lower end face of the holding head is provided with an inner hexagonal hole.

Therefore, the cylinder body and the excrement collecting rod which are arranged in the excrement collecting pipe are fixed in a threaded mode, and the holding head and the cylinder body can be conveniently separated or assembled in batch production by arranging the hexagon socket on the lower end face of the holding head, so that the production efficiency of the excrement collecting pipe is improved.

The excrement collection tube may further include: a flange portion extending radially outward is formed at an upper end of the outer wall of the cylindrical body, and the penetrating film is joined to the flange portion of the outer wall of the cylindrical body to close the first opening portion of the outer wall of the cylindrical body.

This enables the penetrating film to be reliably joined to the cylindrical body, and the cylindrical body can be sealed by the penetrating film, thereby achieving the object of dust prevention and the like.

The excrement collection tube may further include: a label is attached to at least a part of the outer wall of the cylinder, and a window for observing the feces collection space through the outer wall and the cylindrical wall is formed in a part of the label corresponding to the cylindrical wall.

Since the outer wall, the partition wall, and the cylindrical wall included in the cylindrical body of the feces collection tube are all integrally molded, the position of the feces collection space with respect to the outer wall can be reliably determined during manufacturing. The window is arranged at the position, corresponding to the excrement collecting space, of the label on the outer wall, so that a user can observe the excrement collecting space through the window, and the operation convenience is further improved.

The various modes of the excrement collecting pipe can also be suitable for the excrement collecting device comprising the excrement collecting pipe, and corresponding technical effects are obtained.

The present application further provides an excrement collecting rod, which comprises: a distal end portion, an enlarged diameter portion, and a proximal end portion; the base end part is connected with the top end part through the expanding part so as to drive the top end part to move on the superficial layer of the sample; wherein the top part is a rod-shaped structure; the top end portion is provided with an accommodating portion for accommodating the collected sample, and the volume of the accommodating portion is equal to the volume corresponding to the preset sample amount.

According to the fecal sampling stick, the distal end portion can be moved by the proximal end portion and the diameter-enlarged portion, and the distal end portion can be reciprocated on the superficial layer of the fecal sample by the rod-like structure of the distal end portion of the fecal sampling stick. Along with the reciprocating motion, part of the excrement sample can enter the accommodating part, and the excrement sample is collected. And because the volume of the accommodating part is equal to the volume corresponding to the preset sample amount, the volume of the excrement sample acquired each time can be a certain set fixed value, and the detection precision of the sample is improved.

The feces collection rod may further comprise: the accommodating portion includes at least one groove opened on a side of the tip portion.

Thus, a receiving portion can be formed on the tip portion by the groove, so that a part of the sample can be received into the groove when the stool sample is collected. Because the recess simple structure, the processing of being convenient for to with the recess setting in the side of top portion, consequently can reduce manufacturing cost, and make the opening part contact excrement and urine sample surface of recess, the sample of being convenient for is full of the accommodation space in the recess.

The feces collection rod may further comprise: the plurality of grooves are arranged in the axial direction of the tip portion at the same orientation on the circumferential surface of the tip portion. A holding head is arranged on the base end part, and a stool sampling rod indicating part is arranged on the side surface of the holding head. The orientation of the sampling rod indicating part and the groove in the circumferential direction is the same.

Therefore, when a sample is collected, the position of the groove on the circumferential surface of the top end part can be determined through the indicating part on the base end part, so that the operation is convenient, and the aim of enabling the side where the groove is located to be in contact with the fecal sample is fulfilled.

The feces collection rod may further comprise: the groove has a groove bottom area smaller than the opening area to facilitate the sample to fill the accommodating space formed on the top end portion of the groove. In order to increase the opening area of the groove, the side wall of the groove is a slope surface which is obliquely arranged relative to the groove bottom. When the sample is collected, the sample can enter the groove more easily through the larger opening area on the groove.

The feces collection rod may further comprise: an arc transition structure is arranged between the groove bottom and the side wall of the groove. The arc transition structure can be convenient for get rid of the air, reduces to form the dead angle region. When the sample is collected, the groove can be filled with the sample conveniently by reducing the gas cavity formed when the sample enters the groove.

The feces collection rod may further comprise: the accommodating part comprises at least one annular groove formed in the side surface of the top end part; alternatively, the receiving portion includes a screw groove formed in a side surface of the distal end portion. The total volume of the accommodating space formed on the top end part of the annular groove or the thread groove is equal to the volume corresponding to the preset sample amount.

The annular groove or the thread groove can enable the accommodating part to contact the fecal samples in multiple directions, so that the samples can enter the accommodating part in any direction during the reciprocating motion, and the sample collection efficiency is improved.

The feces collection rod may further comprise: the distal end portion, the enlarged diameter portion, and the proximal end portion are of a stepped shaft structure integrally molded. The diameter of the proximal portion is larger than that of the distal portion, and the diameter of the enlarged diameter portion gradually increases from the distal portion toward the proximal portion.

Therefore, the base end part can have a larger diameter, and the handheld operation is convenient. The top portion possesses less diameter, and the tip portion of being convenient for moves in the superficial layer of sample to carry out the collection at a plurality of positions of sample, make the sample that obtains more do benefit to follow-up pathological examination. The diameter-expanded portion can connect the distal end portion and the proximal end portion by changing the diameter thereof, and transmits the motion and moment of the operator.

The feces collection rod may further comprise: the tip portion may have a sharp corner portion formed at an end portion thereof, and the sharp corner portion may have a sharp end with a reduced diameter at the uppermost end of the tip portion. The sharp corner portion facilitates insertion of the sample into the sample on the one hand to allow the sample to enter into the receiving portion provided on the side of the tip portion; on the other hand, the device is convenient to place in the excrement collecting pipe, so that the collected sample can smoothly enter the dissolving liquid containing space for dissolving.

The present application further provides a stool sampling tube, comprising: the excrement collecting rod and the cylinder body. The excrement collecting rod is detachably arranged in the cylinder body. Wherein, the barrel includes outer wall, partition wall and tube-shape wall. The partition wall is arranged on the inner side surface of the outer wall, and divides the inner space of the cylinder into a solution containing space and a feces collection rod combining space. The partition wall is provided with a hole, and the cylindrical wall is arranged on the partition wall in a mode of surrounding the hole. The top end part of the excrement collecting rod penetrates through the cylindrical wall and the hole, so that the accommodating part enters the dissolving liquid accommodating space of the cylinder, and the cylindrical wall is tightly matched with the diameter-expanding part to form an excrement collecting space.

Thus, after the containing part of the fecal sampling rod is filled with the fecal sample, the fecal sampling rod is inserted into the cylinder, the top end part of the fecal sampling rod passes through the holes on the cylindrical wall and the partition wall, and then enters the dissolving solution containing space, so that the sample is dissolved by the dissolving solution. In the process that the excrement collecting rod is inserted into the barrel, the partition wall can be in mutual contact with the top end portion, redundant excrement samples on the top end portion are scraped, the corresponding volume of the samples entering the dissolving liquid containing space is made to be equal to the volume of the containing portion, namely the collected sample amount is equal to the preset sample amount, so that the sample collecting amount is accurately controlled, and the sampling precision is improved.

The excrement collection tube may further include: the inner surface of the outer wall is provided with internal threads, and the base end part of the excrement collecting rod is provided with external threads. The containing part enters the dissolving solution containing space of the cylinder body through the mutual screwing of the internal thread and the external thread.

Therefore, through the mutual screwing of the internal thread and the external thread, the separable connection between the excrement collecting rod and the barrel can be realized, and in the process of mutual screwing, the hole in the partition wall can continuously and multidirectionally scrape the excrement sample on the top end part, so that the residual sample amount in the accommodating part can be accurately controlled.

The excrement collection tube may further include: the top end part is a cylindrical rod structure, and the hole is a circular through hole. At least a portion of the tip portion has a diameter greater than a diameter of the bore to form an interference fit between the tip portion and the bore. Therefore, after the excrement collecting rod is inserted into the hole in the partition wall through interference fit, the top end portion and the hole wall can be kept in tight fit, and generated gaps are reduced, so that redundant samples are accurately scraped, and the amount of the samples entering the containing space of the dissolving liquid is controlled.

The excrement collection tube may further include: the diameter expanding part is provided with a ring convex part. The diameter of the annular protrusion is greater than the inner diameter of the cylindrical wall to form an interference fit between the annular protrusion and the cylindrical wall. The annular convex part can form interference fit with the cylindrical wall, so that an excrement collecting space is closed, and leakage of a dissolving solution and redundant samples is avoided.

The excrement collection tube may further include: adopt just pipe still includes the penetrating film, and the both ends of outer wall are equipped with first opening and second opening respectively, penetrate the film and set up on first opening, and the second opening is used for inserting and adopts just stick. Therefore, when the collected sample needs to be assayed, the penetrating membrane is penetrated by a syringe or the like, so that the liquid dissolving the sample in the dissolving liquid accommodating space can be extracted, and the operation steps can be simplified.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments with reference to the attached drawings in which:

FIG. 1 is a schematic diagram of a feces collection tube according to an embodiment of the present application;

FIG. 2 is a schematic structural view of a barrel included in a fecal sampling tube according to an embodiment of the present application;

FIG. 3 is a cross-sectional view of a cartridge included in a fecal sampling tube of one embodiment of the present application, taken along line A-A of FIG. 2;

FIG. 4 is a schematic view of a fecal sampling rod included in the fecal sampling tube according to one embodiment of the present application;

FIG. 5 is a schematic structural view of a feces scraping zone formed by a sharp corner part of the feces collection rod and an inclined part of the cylinder in one embodiment of the present application;

FIG. 6 is a schematic structural view of the fitting state of the feces collection stick inserted into the barrel according to the embodiment of the present application;

fig. 7 is a schematic structural view of a specific example of a liquid leakage preventing structure according to an embodiment of the present application;

fig. 8 is a schematic structural view of a specific example of a liquid leakage preventing structure according to an embodiment of the present application;

FIG. 9 is a schematic structural view showing the maximum stool sampling range of the stool sampling rod and the length of the stool collecting space according to the embodiment of the present application;

FIG. 10 is a bottom view of a gripping head in one embodiment of the present application;

FIG. 11 is a partial cross-sectional view of a groove in one embodiment of the present application;

FIG. 12 is a schematic view of an arcuate transition in a groove according to an embodiment of the present application;

FIG. 13 is a schematic view of an annular groove configuration in one embodiment of the present application;

FIG. 14 is a schematic view of a thread groove configuration in one embodiment of the present application;

description of reference numerals:

1, excrement collecting pipe; 10, a cylinder body; 20 stool sampling rods; 30 penetrating the membrane; 11 an outer wall; 12 partition walls; 13 a cylindrical wall; 111 a first opening portion; 112 a second opening portion; a solution containing space; b, collecting the stool bar and combining the space; 121 holes; 21 a tip portion; 22 an expanding part; a base end portion 23; 211. 212 grooves; 221 an annular projection; 213 sharp corner portions; 214 annular grooves; 215 thread groove; c, excrement collecting space; d, collecting the maximum range of excrement; 113 an internal threaded portion; 231 an externally threaded portion; 14 an inclined portion; 24 a gripping head; 241 stool sampling rod indication part; 242 hexagonal socket; 114 a flange portion; d1 pore diameter; d2 inner diameter of cylindrical wall; diameter of the tip portion of D3; d4 diameter of annular protrusion; f1 first leakage prevention structure; f2 second leakage prevention structure; f3 third prevention of liquid leakage structure.

Detailed Description

The present application will be described in more detail below with reference to the drawings and embodiments. The following description is merely an example for facilitating understanding of the present application, and is not intended to limit the scope of the present application. In the embodiments, the components of the apparatus may be changed, deleted or added according to the actual situation. In the drawings, the size, the direction, and the like are merely illustrative and may be changed according to the actual situation.

An embodiment of the present application is specifically described with reference to the accompanying drawings. Fig. 1 is a schematic structural view of a feces collection tube 1 according to an embodiment of the present application. As shown in fig. 1, the fecal sampling tube 1 includes a cylinder 10, a fecal sampling rod 20, and a penetrating membrane 30. A solution-containing space A, a feces collection stick-joining space B and a feces collection space C are formed by the cylinder 10, the feces collection stick 20 and the penetrating film 30. The respective constituent elements of the feces collection tube 1 are specifically described below.

Fig. 2 is a schematic structural view of a cylinder 10 included in the feces collection tube 1 according to an embodiment of the present application. Fig. 3 is a sectional view of the cylinder 10 included in the fecal sampling pipe 1 according to the embodiment of the present application, taken along the line a-a in fig. 2. As shown in fig. 2 and 3, the tubular body 10 is formed by integrally molding an outer wall 11, a partition wall 12, and a tubular wall 13. The cylindrical body 10 can be formed of a material such as resin, and is preferably formed of a transparent resin material. The outer wall 11 of the cylindrical body 10 is cylindrical, and has a first opening 111 at an upper end and a second opening 112 at a lower end. The partition wall 12 of the cylinder 10 is formed inside the outer wall 11 perpendicularly to the axial direction of the outer wall 11, and partitions the internal space of the cylinder 10 into an upper solution storage space a and a lower fecal sampling rod coupling space B. The partition wall 12 is formed, for example, at a central position of the cylinder 10. The partition wall 12 is provided with a hole 121. The cylindrical wall 13 of the cylinder 10 is formed inside the outer wall 11 and extends cylindrically from the partition wall 12 to the feces collection rod joining space B so as to surround the hole 121.

Fig. 4 is a schematic structural view of a stool collection rod 20 included in the stool collection tube 1 according to an embodiment of the present application. As shown in fig. 4, the fecal sampling stick 20 is composed of a distal end portion 21, an enlarged diameter portion 22, and a proximal end portion 23. The stool bar 20 can be formed of, for example, a resin material, but is not limited thereto, and other materials may be used. The distal end portion 21 of the feces collection stick 20 has a cylindrical shape, and two concave grooves 211, 212 are formed in the side surfaces thereof. However, the number of the grooves formed in the side surface of the excrement collecting bar 20 is not limited to two, and at least one groove may be formed. Wherein the recesses 211, 212 each have a defined volume, so that a defined volume of a stool sample can be stored. The enlarged diameter portion 22 of the fecal sampling rod 20 is formed between the distal end portion 21 and the proximal end portion 23, and has an enlarged diameter relative to the diameter of the distal end portion 21.

The description is continued with reference to fig. 1 and 2. The penetrating film 30 is attached to the outer wall 11 of the cylindrical body 10 so as to close the first opening 111 of the outer wall 11 of the cylindrical body 10. The penetrating membrane 30 is made of a material such as plastic or aluminum foil, for example, and facilitates the absorption of the stool diluent in the solution storage space a after a sampling needle (not shown) penetrates the penetrating membrane 30. The penetrating membrane 30 may be bonded to the outer wall 11 of the cartridge 10 by, for example, heat fusion or the like.

During the assembly process, the top end 21 of the fecal sampling rod 20 is inserted from the second opening 112 of the outer wall 11 of the cylinder 10 and passes through the hole 121 of the partition wall 12 of the cylinder 10, so that at least one groove 211, 212 of the fecal sampling rod 20 is positioned in the solution containing space a of the cylinder 10, the side surface of the top end 21 of the fecal sampling rod 20 is tightly matched with the inner edge of the hole 121 of the partition wall 12 of the cylinder 10, the diameter-expanded part 22 of the fecal sampling rod 20 is tightly matched with the cylindrical wall 13 of the cylinder 10, and the partition wall 12, the cylindrical wall 13 and the diameter-expanded part 22 of the fecal sampling rod 20 form a closed fecal collecting space C. Further, the diluent of stool is filled as a solution into the solution containing space A, and the side surface of the distal end portion 21 of the fecal sampling stick 20 is tightly fitted to the inner edge of the hole 121 of the partition wall 12 of the tubular body 10, thereby preventing leakage of the diluent of stool 25. Finally, the penetrating film 30 is bonded to the outer wall 11 of the cartridge 10 by means of heat fusion or the like.

When in use, a user draws out the excrement collecting rod 20 from the assembled excrement collecting tube 1 and holds the excrement collecting rod 20 by hand to collect excrement. Specifically, the user inserts the tip end portion 21 of the fecal sampling stick 20 into the fecal sample so that the fecal sample is coated on the tip end portion 21 of the fecal sampling stick 20. Next, the user inserts the fecal sampling stick 20 through the second opening 112 of the outer wall 11 of the tubular body 10, and passes the distal end 21 of the fecal sampling stick 20 through the hole 121 of the partition wall 12 of the tubular body 10. At this time, the hole 121 presses the stool sample on the tip portion 21 of the fecal sampling stick 20 into at least one of the recesses 211, 212, and at the same time, the excess stool on the tip portion 21 of the fecal sampling stick 20 is scraped off by the hole 121 and enters the fecal collecting space C. Thus, at least one of the grooves 211, 212 of the fecal sampling rod 20 and the hole 121 in the partition wall 12 of the cylinder 10 are matched with each other for the purpose of quantitative fecal sampling, and at the same time, the diameter-enlarged portion 22 of the fecal sampling rod 20 and the partition wall 12 and the cylindrical wall 13 of the cylinder 10 are matched with each other to collect the redundant fecal sample in the closed fecal collecting space C.

Therefore, only by the mutual matching of the cylinder body 10 and the excrement collecting rod 20, the quantitative excrement collection and the excrement collecting space C for collecting redundant excrement are realized, the number of parts can be reduced, the cost is reduced, the assembly process during manufacturing is simplified, the operation convenience and safety during use can be improved, and the risk of leakage of solution or excrement caused by loosening or falling of the parts is reduced.

The above embodiment may be modified as follows. That is, as shown in fig. 2, the outer wall 11 of the cylindrical body 10 includes an internal thread portion 113 having an internal thread formed on an inner surface thereof, and the internal thread portion 113 is located at a portion near a lower end of the inner surface of the outer wall 11. As shown in fig. 4, the proximal end portion 23 of the fecal sampling rod 20 includes an external thread portion 231 having an external thread formed on an outer surface thereof, and the external thread portion 231 is positioned on at least a part of the outer surface of the cylindrical proximal end portion 23.

When the fecal sampling rod 20 is inserted from the second opening 112 of the outer wall 11 of the cylindrical body 10, the female screw portion 113 of the cylindrical body 10 and the male screw portion 231 of the fecal sampling rod 20 are screwed together by rotating the fecal sampling rod 20 and the cylindrical body 10 relative to each other, and the portion of the distal end portion 21 of the fecal sampling rod 20 in which the at least one recessed groove 211, 212 is formed passes through the hole 121 of the partition wall 12 of the cylindrical body 10 and enters the dissolved solution containing space a of the cylindrical body 10.

Further, when the assembled fecal sampling rod 20 is separated from the cylindrical body 10, the female screw portion 113 of the cylindrical body 10 and the male screw portion 231 of the fecal sampling rod 20 are gradually separated from the state of being screwed together by screwing the fecal sampling rod 20 and the cylindrical body 10 into each other by relative rotation and screwing, and the solution can be prevented from splashing when the cylindrical body 10 and the fecal sampling rod 20 are separated.

Therefore, at least one of the grooves 211 and 212 passes through the hole 121 of the partition wall 12 of the cylinder 10 and enters the solution containing space a by screwing the cylinder 10 and the feces collection rod 20 together, so that the above process can be stabilized, more reliable quantitative feces collection can be realized, and the solution can be prevented from splashing when the cylinder 10 and the feces collection rod 20 are separated.

The above embodiment may be modified as follows. That is, the outer wall 11 of the cylindrical body 10, the hole 121 of the partition wall 12, and the cylindrical wall 13 are integrally molded coaxially. In a state where the female screw portion 113 of the tubular body 10 and the male screw portion 231 of the fecal sampling rod 20 are screwed with each other, the outer wall 11 of the tubular body 10, the hole 121 of the partition wall 12, and the tubular wall 13 are arranged coaxially with the distal end portion 21, the enlarged diameter portion 22, and the proximal end portion 23 of the fecal sampling rod 20.

Among them, the diameter of the enlarged diameter portion 22 of the fecal sampling rod 20 on the side closer to the distal end portion 21 is equal to or smaller than the diameter on the side closer to the proximal end portion 23. The diameter of the enlarged diameter portion 22 of the fecal sampling rod 20 on the side close to the distal end 21 is smaller than the inner diameter of the cylindrical wall 13 of the cylindrical body 10, and the diameter of at least a part of the enlarged diameter portion 22 of the fecal sampling rod 20 on the side close to the proximal end 23 is larger than the inner diameter of the cylindrical wall 13 of the cylindrical body 10.

Thus, by forming the fecal sampling stick 20 having the enlarged diameter portion 22 of the above shape, the closed fecal collecting space C can be formed by reliably fitting the cylindrical wall 13 of the cylindrical body 10, and the enlarged diameter portion 22 of the fecal sampling stick 20 can be easily fitted to the cylindrical wall 13 of the cylindrical body 10, further improving the ease of handling.

The above embodiment may be modified as follows. Fig. 5 is a schematic structural view of a feces scraping region formed by the sharp corner portion 213 of the feces collection stick 20 and the inclined portion 14 of the cylinder 10 in one embodiment of the present application. As shown in fig. 3 and 5, the inner diameter of the cylindrical wall 13 of the cylindrical body 10 is larger than the diameter of the hole 121 of the partition wall 12 of the cylindrical body 10, and an inclined portion 14 is integrally formed from the inner side surface of the cylindrical wall 13 toward the edge of the hole 121 of the partition wall 12 in the vicinity of the upper end of the cylindrical wall 13.

In order to form a sufficient feces collecting space C, the inner diameter of the cylindrical wall 13 needs to be set large, for example, to be larger than the diameter of the hole 121 of the partition wall 12 by a certain degree or more. At this time, when the user inserts the distal end portion 21 of the fecal sampling stick 20 into the hole 121 of the partition wall 12 through the inside of the cylindrical wall 13, the distal end portion 21 of the fecal sampling stick 20 easily collides with the edge of the hole 121 and is difficult to enter the hole 121.

In contrast, in the present modification, since the outer wall 11, the partition wall 12, and the cylindrical wall 13 included in the cylindrical body 10 of the feces collection tube 1 are all integrally molded, the inclined portion 14 can be integrally molded between the inner surface of the cylindrical wall 13 and the edge of the hole 121 of the partition wall 12. Thus, the inner diameter of the cylindrical wall 13 is appropriately set to form a sufficient feces collecting space C, and the feces collection rod 20 can be guided to be inserted into the hole 121 of the partition wall 12 of the cylinder 10, thereby further improving the convenience of operation.

As shown in fig. 5, the inclination angle of the inclined portion 14 (the angle formed by the inclined portions 14 on both sides in the cross section shown in fig. 5) is set to θ, for example, 90 degrees. That is, the angle formed by the inclination direction of the inclined portion 14 and the vertical direction as the insertion direction of the fecal sampling stick 20 is θ/2, for example, 45 degrees.

As shown in fig. 5, a sharp corner 213 is formed at the uppermost end of the distal end portion 21 of the fecal sampling stick 20. Here, the inclination angle of the acute angle portion 213 (the apex angle of the taper of the acute angle portion 213 in the cross section shown in fig. 5) is set to θ, for example, 90 degrees. That is, the angle between the inclination direction of the acute angle portion 213 and the vertical direction as the insertion direction of the feces collection stick 20 is θ/2, for example, 45 degrees.

That is, the inclination angle of the sharp corner 213 of the distal end portion 21 of the fecal sampling stick 20 is set to be the same as the inclination angle of the inclined portion 14 of the cylindrical body 10. Thus, in the process of inserting the fecal sampling rod 20 into the tubular body 10, the sharp corner 213 of the fecal sampling rod 20 forms a fecal scraping area together with the inclined portion 14 of the tubular body 10 and the hole 121 of the partition wall 12, and the feces adhering to the sharp corner 213 of the fecal sampling rod 20 are reliably scraped off in the fecal scraping area after insertion, so that it is possible to prevent the excessive feces from entering the solution containing space a, and the quantitative property is further improved.

The surface of the sharp corner 213 of the stool collection rod 20 may be polished to be smooth. This can prevent the feces from adhering to the surface of the sharp corner 213 as much as possible, thereby more reliably preventing the excess feces from entering the solution storage space a, and further improving the quantitative determination performance.

The above embodiment may be modified as follows. Fig. 6 is a schematic structural view showing a fitting state of the fecal sampling rod 20 inserted into the barrel 10 according to an embodiment of the present application. As shown in fig. 6, the stool sampling tube 1 can have at least one of three leakage preventing structures, i.e., a first leakage preventing structure F1, a second leakage preventing structure F2, and a third leakage preventing structure F3, in a state where the female screw portion 113 of the tube body 10 and the male screw portion 231 of the stool sampling rod 20 are screwed together to fit the stool sampling rod 20 and the tube body 10 to each other. The following is a detailed description.

Fig. 7 is a schematic structural view of a specific example of a liquid leakage preventing structure according to an embodiment of the present application. As shown in fig. 4 and 7, an annular convex portion 221 is formed on the side of the enlarged diameter portion 22 of the fecal sampling stick 20 close to the base end portion 23. In fig. 7, the diameter of the hole 121 of the partition wall 12 is D1, the inner diameter of the cylindrical wall 13 of the tubular body 10 is D2, the diameter of the distal end portion 21 of the fecal sampling stick 20 is D3, and the diameter of the annular convex portion 221 of the fecal sampling stick 20 is D4.

First, the first liquid leakage preventing structure F1 is explained. As shown in fig. 7, the diameter D3 of at least a part of the structure of the distal end portion 21 of the fecal sampling stick is set to be larger than the diameter D1 of the hole 121 of the partition wall 12 of the tubular body 10. For example, the diameter D3 of the distal end 21 of the fecal sampling rod is set to be 0.05mm larger than the diameter D1 of the hole 121 of the partition wall 12 of the cylinder 10. Thus, in a state where the distal end portion 21 of the fecal sampling rod 20 is inserted into the hole 121 of the partition wall 12 of the tubular body 10, at least a part of the structure of the distal end portion 21 and the hole 121 of the partition wall 12 are in interference fit, and the interference amount is, for example, 0.05 mm. The interference fit between the distal end portion 21 of the fecal sampling stick 20 and the hole 121 of the cylindrical body 10 can reliably prevent the dissolution liquid contained in the dissolution liquid containing space a from leaking into the fecal collecting space C.

The second liquid leakage preventing structure F2 will be described next. As shown in fig. 7, the diameter D4 of the annular protrusion 221 of the fecal sampling rod 20 is set to be larger than the inner diameter D2 of the cylindrical wall 13 of the cylinder 10. For example, the diameter D4 of the annular protrusion 221 of the fecal sampling rod 20 is set to be 0.1mm larger than the inner diameter D2 of the cylindrical wall 13 of the cylinder 10. Thus, in a state where the diameter-enlarged portion 22 of the fecal sampling rod 20 is inserted into the cylindrical wall 13 of the cylindrical body 10, the annular convex portion 221 is in interference fit with the cylindrical wall 13 of the cylindrical body 10, and the interference amount is, for example, 0.1 mm. By the interference fit between the ring protrusion 10221 and the cylindrical wall 13 of the cylinder 10, even if the solution contained in the solution containing space a has leaked to the feces collecting space C, it can be reliably prevented from continuing to leak to the feces collection stick coupling space B.

Finally, the third liquid leakage prevention structure F3 is explained. Fig. 8 is a schematic structural view of a specific example of a liquid leakage preventing structure according to an embodiment of the present application. As shown in fig. 8, in a state where the female screw portion 113 of the cylindrical body 10 and the male screw portion 231 of the stool sampling rod 20 are screwed with each other, the female screw portion 113 of the cylindrical body 10 and the male screw portion 231 of the stool sampling rod 20 are in interference fit. For example, the amount of interference between the female screw 113 of the cylinder 10 and the male screw 231 of the fecal sampling stick 20 is set to 0.1 mm. By the interference fit between the female screw 113 of the cylinder 10 and the male screw 231 of the fecal sampling stick 20, even if the solution contained in the solution containing space a has leaked to the fecal sampling stick coupling space B through the fecal collecting space C, it can be reliably prevented from continuing to leak to the outside.

The above embodiment may be modified as follows. Fig. 9 is a schematic structural view of the maximum stool sampling range D of the stool sampling rod 20 and the length of the stool collecting space C in one embodiment of the present application. As shown in fig. 9, the length of the feces collection space C in the insertion direction of the feces collection stick 20 is set to be longer than the length of the feces collection maximum range D of the feces collection stick 20. For example, when the length of the feces collection maximum range D of the feces collection stick 20 is 15mm, the length of the feces collection space C in the insertion direction of the feces collection stick 20 may be set to 17 mm.

In the description of the stool collection tube 10, the stool collection method and the maximum stool collection range D are explicitly described. For example, when the depth of immersion of the fecal sampling stick 20 into the solution is 9mm, the length of the greatest fecal sampling range D is clearly described as 15mm in the specification of the fecal sampling tube 1. In contrast, the length of the feces collection space C is set to be longer than the maximum feces collection range D, for example, 17 mm. Therefore, the excrement collecting space C with the effective length of 17mm can be formed after the excrement collecting rod 20 is matched with the cylinder 10, the surplus length of 2mm is reserved, and the sufficient excrement collecting space C is ensured.

The above embodiment may be modified as follows. That is, the diameter D1 of the hole 121 of the partition wall 12 of the tubular body 10 is formed smaller than the minimum hole diameter through which the solution contained in the solution containing space a closed by the penetrating membrane 30 can leak out of the hole 121.

When the hole 121 has such a diameter, the dissolution liquid contained in the dissolution liquid containing space a does not leak from the hole 121 due to the surface tension of the dissolution liquid, the atmospheric pressure, and the like even if the user pulls the fecal sampling stick 20 out of the cylinder 10 during use. Thus, even if the fecal sampling rod 20 is separated from the cylinder 10, the solution contained in the solution containing space does not leak, and the ease of operation and safety are further improved.

The above embodiment may be modified as follows. That is, as shown in fig. 4, the bottom surfaces of the two concave grooves 211 and 212 opened in the side surface of the distal end portion 21 of the fecal sampling stick 20 are roughened (for example, roughened), whereby the fecal sample can be held more reliably. In addition, the draft angle of each side surface of the two grooves 211 and 212 is increased, so that the included angle formed by the side surface and the bottom surface of the two grooves 211 and 212 is increased. Thereby, also the stool sample collected near the bottom of the two recesses 211, 212 can be made easier to dissolve.

The two concave grooves 211, 212 opened in the side surface of the tip portion 21 of the fecal sampling rod 20 are arranged along the axial direction of the tip portion 21 at the same orientation in the circumferential direction of the tip portion 21. For example, fig. 4 shows an example in which two concave grooves 211, 212 are arranged along the axial direction of the distal end portion 21, that is, the vertical direction, at a position facing outward of the paper surface in the circumferential direction of the distal end portion 21. Thus, the effect of collecting feces can be improved.

Further, a grip head 24 is formed below the proximal end portion 23 of the fecal sampling stick 20. For example, the lower end of the proximal end portion 23 of the fecal sampling stick 20 is fixed to the center of the upper end surface of the grip head 24. Alternatively, the fecal sampling stick 20 can be integrally formed with the gripping head 24.

As shown in fig. 4, a feces collection stick indicator 241 is formed on a part of the side surface of the grip head 24. For example, the fecal sampling stick indicating part 241 can be formed as an arrow pointing to the insertion direction of the fecal sampling stick 20, but its specific shape is not limited as long as it can indicate to the user.

The orientation of the fecal sampling stick indicating portion 241 of the grip head 24 in the circumferential direction is the same as that of the two recesses 211, 212 of the tip portion 21. In fig. 4, it is shown that the feces sampling stick indicating portion 241 and the two grooves 211, 212 are formed at a position facing outward of the paper surface in the circumferential direction.

Therefore, the user can be effectively prompted, and the situation that excrement is not fully collected or excrement is not collected due to inaccurate taking position of the user is avoided. The orientations in the circumferential direction are not limited to the same, and may be adjusted as appropriate according to the actual situation.

Further, a label (not shown) may be attached to at least a part of the outer wall 11 of the cylinder 10. A cylindrical indicator (not shown) is formed in a part of the label. The tubular body indicating portion may be formed as an arrow pointing in a direction opposite to the insertion direction of the fecal sampling stick 20, but its specific shape is not limited as long as it can indicate to the user.

In a state where the female screw portion 113 of the cylinder 10 and the male screw portion 231 of the fecal sampling stick 20 are completely screwed (tightened), the fecal sampling stick indicating portion 241 of the grip head 24 and the cylinder indicating portion of the label are circumferentially aligned with each other. For example, when the fecal sampling stick indicator 241 and the tubular indicator are arrows, the two arrows face each other. This can effectively prompt the user whether the fecal sampling rod 20 has been screwed (tightened) with the cylinder 10, and prevent leakage of liquid or the like caused by the user not screwing the fecal sampling rod 20 with the cylinder 10.

The above embodiment may be modified as follows. Fig. 10 is a bottom view of the gripping head 24 in one embodiment of the present application. As shown in fig. 10, a hexagonal socket 242 is opened in the lower end surface of the grip head 24.

Therefore, the tube body 10 and the excrement collecting rod 20 included in the excrement collecting tube 1 are screwed and fixed, and the hexagonal socket 242 is formed on the lower end surface of the grip head 24, so that the grip head 24 and the tube body 10 can be separated or assembled easily during mass production, and the production efficiency of the excrement collecting tube 1 is improved.

The above embodiment may be modified as follows. As shown in fig. 3, a flange portion 114 protruding outward in the radial direction is formed at the upper end of the outer wall 11 of the cylinder 10. The penetrating film 30 is joined to the flange portion 114 of the outer wall 11 of the cylinder 10, thereby closing the first opening portion 111 of the outer wall 11 of the cylinder 10.

This allows the penetrating film 30 to be reliably joined to the cylindrical body 10, and the penetrating film 30 seals the cylindrical body 10 to prevent dust.

The above embodiment may be modified as follows. That is, a label (not shown) is attached to at least a part of the outer wall 11 of the cylinder 10. A window for observing the feces collecting space C through the outer wall 11 and the cylindrical wall 13 is opened in a portion of the label corresponding to the cylindrical wall 13. For example, the user observes the presence or absence of collected stools in the stool collecting space C from the outside of the stool collecting tube 1 through the window.

Since the outer wall 11, the partition wall 12, and the cylindrical wall 13 included in the cylindrical body 10 of the feces collection tube 1 are all integrally molded, the position of the feces collection space C with respect to the outer wall 11 can be reliably determined at the time of manufacture. By arranging the window at the position corresponding to the excrement collecting space C of the label on the outer wall 11, a user can be ensured to observe the excrement collecting space C through the window, and the operation convenience is further improved.

The above-described various modes of the stool sampling tube 1 of the present application can also be applied to a stool collection device including the stool sampling tube 1. For example, the fecal sampling device may include any of the above described fecal sampling tubes 1 and sampling needles, etc.

In some embodiments of the present application, there is also provided a stool sampling rod 20, as shown in fig. 4, including: a distal end portion 21, an enlarged diameter portion 22, and a proximal end portion 23. Wherein the tip portion 21 is adapted to contact the fecal sample and reciprocate within the shallow surface layer of the sample, thereby causing a portion of the fecal sample to adhere to the fecal sampling rod 20. The base end portion 23 is held by an operator when a sample is collected, so as to drive the tip end portion 21 to perform reciprocating motion on a superficial layer of the sample. The enlarged diameter portion 22 is used to connect the distal end portion 21 and the proximal end portion 23.

The proximal portion 23 is connected to the distal portion 21 via the enlarged diameter portion 22, and moves the distal portion 21 on the sample superficial layer. The superficial layer of the sample comprises a sample surface and a region formed by a preset distance extending inwards from the sample surface. For example, in the detection of intestinal cancer and adenoma, it is necessary to detect an assay index such as stool blood from a sample, but stool blood is more likely to be carried in a stool sample near the surface, and a pathological index is more easily examined.

The shallow surface layer of the sample is not limited to be too deep so as to avoid the influence on the assay precision caused by the failure of collecting the useful sample; it is not preferable to be too shallow to avoid too small an amount of the sample adhering to the tip portion 21 during the movement of the tip portion 21 in the shallow surface layer. In general, the sample shallow skin depth should not exceed the total length of the tip portion 21, nor should it be less than the distance of the uppermost end of the tip portion 21 from the top portion 21. The uppermost end of the distal end portion 21 is an end surface position on the distal end portion 21 side away from the enlarged diameter portion 22. For example, when a fecal sample is examined for detection of diseases such as intestinal cancer and adenoma, the superficial thickness of the sample may be set to 2 to 10 mm.

In order to enable the sample to adhere to the tip portion 21, the tip portion 21 may be designed as a rod-like structure, such as a cylindrical rod, a prismatic rod, or the like. The tip portion 21 of the rod-like structure may be partially inserted into the sample and partially remain outside the sample, so that the sample near the superficial position of the sample can be contacted and adhered to the tip portion 21 during the movement, thereby facilitating the collection of the sample for facilitating the assay. In one embodiment, the distal end portion 21, the enlarged diameter portion 22, and the proximal end portion 23 may be rod-shaped, or the enlarged diameter portion 22 and the proximal end portion 23 may be designed to have other structures according to actual needs, and only the distal end portion 21 may be designed to be rod-shaped, thereby facilitating the operation.

Since the more precise the control of the amount of sample collected during the actual test, the more accurate the assay result obtained. For example, when a fecal sample corresponding to a disease such as intestinal cancer or adenoma is detected, the amount of the sample collected at each time can be controlled to 2 mg. Therefore, in order to obtain a precise amount of sample, the top end portion 21 is provided with an accommodating portion for accommodating the collected sample, and the capacity of the accommodating portion is equal to the capacity corresponding to the preset sample amount.

Wherein, the preset sample size is the sample collection amount per time, such as 2mg, set according to the actual test requirement. From the average density of the faeces, the volume can be calculated, i.e. the preset sample size corresponds to the required volume. After the volume corresponding to the predetermined sample amount is determined, the tip portion 21 may be provided with an accommodating portion according to the volume corresponding to the predetermined sample amount. For example, the tip portion 21 is provided with recesses 211, 212, so that the volume of the recesses 211, 212 is equal to the volume corresponding to the predetermined sample amount, i.e., the recesses accommodate exactly 2mg of the stool sample.

In one implementation, the receiving portion comprises at least one recess 211, 212 opening on the side of the tip portion 21. The number of recesses 211, 212 may be set according to the overall size of the faecal tube and the amount of sample per collection. For example, when the tip portion 21 is thin and cannot be provided with a deep or large groove, but a sample necessary for an assay is large, a plurality of grooves 211 and 212 may be provided in the tip portion 21 so that a predetermined sample amount of stool can be collected. However, the number of the recesses 211, 212 should not be too large to ensure the strength of the tip portion 21 and prevent damage during the inspection. Illustratively, two recesses 211, 212 are provided in the tip portion 21. The sum of the volumes of the two recesses 211, 212 is equal to the volume corresponding to the preset sample size.

The plurality of grooves can be arranged on the top end portion 21 according to different arrangement modes according to different detection requirements. The plurality of grooves may be arranged in a straight line, may be uniformly arranged on the circumferential surface of the top end portion 21, or may be arranged on the top end portion 21 in a manner conforming to other arrangement rules. For example, the tip portion 21 is provided with 3 concave grooves, and the three concave grooves are arranged on the circumferential surface of the tip portion 21 so as to be spaced 120 degrees apart from each other around the axis of the tip portion 21.

The shape of recess is not injectd to this application, can be rectangular shape recess, circular shrinkage pool, curved groove or the recess of other arbitrary shapes among the practical application. However, the shape of the recess is as good as possible to allow the sample to easily enter the recess 211, 212 and fill the recess 211, 212 when the sample is collected. Excess sample may be scraped off by the partition wall 12 in the cartridge 10 by the engagement between the fecal sampling stick 20 and the cartridge 10. Therefore, the amount of sample remaining in the recesses 211, 212 is exactly equal to the preset amount of sample. Based on this, the recesses 211, 212 and thus the receptacle should be configured to facilitate the entry of the sample therein. Obviously, the depth of the groove should not be too deep, and there should not be a structure that tends to create an air cavity inside the collected sample.

In one implementation, the groove 211, 212 has a groove bottom area smaller than the opening area, i.e. the groove 211, 212 is preferably an open groove rather than a narrow groove, so as to facilitate the sample to fill the receiving space formed by the groove 211, 212 on the top end 21.

For example, a groove structure with a trapezoidal cross section may be adopted, the width of the notch of the groove 211, 212 is 1mm, and the width of the groove bottom of the groove is 0.8mm, i.e. the width of the notch side of the groove 211, 212 is kept larger than the width of the groove bottom side, so that the groove 211, 212 presents an open structure for the sample to enter.

In order to increase the opening area of the grooves 211, 212, in one implementation, as shown in fig. 11, the side walls of the grooves 211, 212 are sloped surfaces that are obliquely disposed with respect to the groove bottom. Compared with a structure that the side walls are perpendicular to the groove bottom, the side walls of the grooves 211 and 212 are inclined slope surfaces, so that the opening areas of the grooves 211 and 212 can be increased, and the sample can rapidly enter the grooves 211 and 212 when the top end portion 21 moves on a shallow surface layer of the sample. Meanwhile, the larger opening areas of the grooves 211 and 212 can also increase the contact area between the collected sample and the dissolving solution, so that the sample can be quickly dissolved after the top end part 21 enters the dissolving solution accommodating space A, and the assay efficiency is improved.

Obviously, the inclined direction of the side walls of the recesses 211, 212 should be an inclined direction that can increase the opening area of the recesses. Namely, the included angle between the upper surface of the side wall of the groove and the upper surface of the groove bottom is larger than 90 degrees. In practice, the amount of the angle between the upper surface of the groove sidewall and the upper surface of the groove bottom can affect the sample holding and collection capabilities of the grooves 211, 212. If the included angle between the upper surface of the side wall of the groove and the upper surface of the bottom of the groove is larger, the depth of the groove formed in the top end part 21 is shallower, and the corresponding sample accommodating capacity is lower; if the included angle between the upper surface of the side wall of the groove and the upper surface of the bottom of the groove is smaller, the opening area of the groove is smaller, and the sample is not favorably fed into the groove. Therefore, the angle between the upper surface of the groove sidewall and the upper surface of the groove bottom should be controlled within a reasonable range, for example, the angle between the upper surface of the groove sidewall and the upper surface of the groove bottom is 105 degrees.

The positional relationship between the side walls of the grooves 211, 212 and the groove bottoms differs depending on the shape of the grooves 211, 212. For example, when the groove is a prismatic groove, the groove includes 4 side walls, and thus, in order to increase the opening area, four side walls may be provided as inclined side walls. With this shape of groove, however, it is easy to form an angle region at the intersection of the side walls and the groove bottom. Such an angled region tends to form an air cavity, i.e. an air bubble or an airtight space, when collecting a sample, and under the coverage of a semi-fluid sample, air bubbles are more difficult to expel from the angled region, thereby affecting the accuracy of the collection of the sample.

To alleviate the problem of the angular region being prone to bubble formation, in one implementation, as shown in fig. 12, an arc-shaped transition structure may be further disposed between the bottom and the side walls of the grooves 211, 212 and/or between adjacent side walls to reduce the formation of gas cavities when the sample enters the grooves. The arc transition structure can be realized by rounding process between the groove bottom and the side wall as well as between the adjacent side walls; and the groove bottom and the side wall of the partial or whole curved surface structure can be realized. For example, the side walls at the two ends of the groove can be designed into arc-surface side walls to form a groove with a round corner rectangle or a round waist rectangle; or the bottom of the groove is designed into an arc bottom to form a round bottom groove; or the groove bottom and the side wall are designed into cambered surface structures to form a spherical groove or an ellipsoidal groove and the like.

In view of the groove structure in the above-described embodiment, in order to achieve both the sample-accommodating ability and the ability to collect a sample, it is also possible to provide a plurality of grooves on the tip portion 21, that is, to increase the sample-accommodating ability by increasing the number of grooves, and to design each groove as a structure in the above-described embodiment, such as an increase in the opening area, an arc-shaped transition structure, or the like, to increase the ability to collect a sample.

In one implementation, the plurality of recesses 211, 212 are arranged in the axial direction of the tip portion 21 at the same orientation on the circumferential surface of the tip portion 21. For example, the tip portion 21 is provided with 2 recesses in total, i.e., recesses 211 and 212. The two recesses may be aligned in a direction parallel to the central axis of the tip portion 21, i.e. the recesses 211, 212 open at the same orientation on the circumferential surface of the tip portion 21. Therefore, when the sample is collected, the two grooves can be in contact with the superficial surface layer of the sample in the same direction and generate relative motion with the same rule, so that the difference of the components of the sample collected in the two grooves is reduced, and the specificity of an assay result is reduced.

A grip head 24 may also be provided on the base end portion 23. Since the gripping head 24 is primarily intended to be gripped by an operator, the gripping head may be shaped to facilitate gripping. For example, the diameter of the gripping head 24 is larger, e.g., 10-15mm, relative to the tip portion 21. Meanwhile, the holding head 24 may be provided with a falling-off prevention structure, such as an anti-slip pattern. The side surface of the grip head 24 is provided with a feces sampling rod indicating portion 241, and the feces sampling rod indicating portion 241 can be used to indicate the orientation of the recesses 211, 212 on the tip portion 21, so that the feces sampling rod indicating portion 241 is the same as the orientation of the recesses 211, 212 in the circumferential direction.

During the process of collecting the sample, the positions of the grooves 211, 212 can be determined by the position of the sampling rod indicating portion 241, so that the opening orientations of the grooves 211, 212 can be adjusted. For example, the opening direction of the recesses 211 and 212 is the same as the moving direction of the fecal sampling stick 20, which is more favorable for the sample to enter into the recess, and the operator usually moves the thumb when taking the fecal sampling stick for collecting the sample, so that the operator can put the thumb on the fecal sampling stick indicating portion 241, pick up the entire fecal sampling stick 20 with the index finger and the thumb, and naturally swing the arm to reciprocate the top end 21 of the fecal sampling stick 20 on the superficial layer of the sample. It can be seen that during the reciprocating movement, the opening direction of the grooves 211 and 212 is the same as the movement direction due to the movement processes, i.e. the openings of the grooves 211 and 212 are opposite to the sample, so that a part of the sample enters the grooves.

To provide the indicating function, the sampler bar indicators 241 may be designed as indicating patterns engraved on the gripping head 24. For example, the fecal stick indicating portion 241 can be shaped as an arrow pattern pointing in the direction of the tip portion 21, a triangular pattern, or a straight line extending in the direction of the recesses 211, 212. The edge of the stool collection rod indicating part 241 may be provided with a structure that can be touched, such as a recess or a protrusion, so that the user can conveniently adjust the finger holding state. Since the sample covers the concave grooves 211 and 212 and the positions of the concave grooves 211 and 212 are not visible after the tip portion 21 is inserted into the sample superficial layer, the operator can know the positions of the concave grooves 211 and 212 by observing or touching the fecal sampling stick indicating portion 241. Therefore, the operator can still quickly know the orientation of the grooves 211 and 212 after adjusting the reciprocating motion mode, so that the openings of the grooves 211 and 212 can face more towards the sample direction, and the sample can conveniently enter the grooves 211 and 212.

In the above-described embodiment, the grooves 211 and 212 are taken as examples of the accommodating portions, and the volume of the grooves 211 and 212 is controlled, thereby controlling the amount of the sample collected at each time. The recesses 211, 212 are of the simplest type of receptacle, have high reliability in use, and have low difficulty in processing, and thus can satisfy most fecal testing requirements.

Other types of receptacles may also be provided for different assay requirements. In one implementation, as shown in fig. 13, the housing comprises at least one annular groove 214 opening on the side of the tip portion 21. The annular groove 214 can form an annular accommodating space on the side surface of the top end portion 21, and due to the opening characteristic of the annular accommodating space, the opening direction of a part of the accommodating portion is always the same as the moving direction in the reciprocating motion process of the stool collection rod 20, so that the part of the accommodating portion can face the sample, and the collection efficiency of the sample is improved.

It can be seen that, because of the larger accommodating space formed by the annular groove 214, the fecal sampling stick 20 of the type with the accommodating part of the annular groove 214 is more suitable for being applied to the part of the sample detection process requiring a larger sample amount. Also, the sample collection amount of the containing portion can be further increased by providing a plurality of annular grooves 214 on the tip portion 21. In order to control the sample collection accuracy, the annular groove 214 forms a total volume of the accommodation space on the tip portion 21 equal to a volume corresponding to a preset sample amount. For example, if the assay sample is required to be 2mg, the total volume of all the accommodating spaces formed by the annular grooves 214 is equal to the volume corresponding to the 2mg sample.

In general, the total volume of the receptacles depends on the volume of the individual annular grooves 214 and the number of openings of the annular grooves 214. I.e., the deeper and wider the annular groove 214, the greater the volume of the individual annular grooves 214; the greater the number of annular grooves 214, the greater the total volume of the plurality of annular grooves 214. However, when the depth and width of the single annular groove 214 are large, it is not favorable for the sample to fill the annular groove 214, i.e. for the control of the sample collection amount, and for the dissolution liquid to dissolve the sample. Therefore, in practical applications, a shallow and narrow annular groove 214 can be used as the accommodating portion, and when the sample amount needs to be collected is large, the sample collection amount and the requirement that the sample easily enters the annular groove 214 can be both satisfied by increasing the number of the annular grooves 214.

In another implementation, as shown in fig. 14, the receiving portion includes a threaded groove 215 opened on the side of the tip portion 21. The screw groove 215 is a groove formed in the distal end portion 21 in such a manner that a spiral line is formed along the cylindrical surface of the distal end portion 21 to form a male screw structure in the distal end portion 21.

Also, in order to control the sample collection amount, the screw groove 215 forms a total volume of the accommodation space on the tip end portion 21 equal to a volume corresponding to a preset sample amount. Since the screw groove 215 is a continuous groove, the communication relationship between the whole screw groove 215 is maintained in the feature of having the opening in each direction of the annular groove 214. In practical application, along with the reciprocating motion process implemented by an operator, samples collected in all directions can be balanced through the continuous grooves, so that the problem that more samples can be collected in part of the directions and part of the regions are not full due to less samples are collected in part of the directions is solved, and the sampling amount of the samples can be accurately controlled.

In addition, the accommodating part of the thread groove 215 structure is relatively other shapes, which facilitates the material removing processing technology, so that the requirement on the material performance of the whole excrement collecting rod is lower, and more material types can be selected for the excrement collecting rod 20. The distal end portion 21 may be made of a material such as hard plastic or a metal material. Not only is the material with better performance convenient to select, but also the processing cost can be reduced.

The above embodiment may be modified as follows. As shown in fig. 4, the distal end portion 21, the enlarged diameter portion 22, and the proximal end portion 23 have a stepped shaft structure formed integrally therewith. In the integrally molded stepped shaft structure, the base end portion 23 having a large diameter and the tip end portion 21 having a small diameter can be connected to each other by diameter-changing processing using the diameter-enlarged portion 22. The diameter of the base end part 23 is larger than that of the top end part 21, so that the requirement that the top end part 21 has a smaller diameter so as to perform reciprocating operation on a sample shallow surface layer and the requirement that the base end part 23 has a larger diameter so as to be convenient for an operator to hold can be met. The integral structure of the distal end portion 21, the enlarged diameter portion 22, and the proximal end portion 23 also facilitates transmission of moment during movement and operation.

In order to simultaneously accommodate the diameter changes of the distal end portion 21 and the proximal end portion 23, the diameter-expanded portion 22 may have a stepped shaft structure in which the diameter is increased stepwise from the distal end portion 21 to the diameter-expanded portion 22 to the proximal end portion 23, between the distal end portion 21 and the proximal end portion 23. The diameter of the enlarged diameter portion 22 may be designed to gradually increase from the distal end portion 21 toward the proximal end portion 23, that is, the enlarged diameter portion 22 may have a truncated cone shape with a gradually changing diameter. The gradually changing diameter-expanding part 22 can be matched with the inner wall of the cylinder 10 to form a feces collecting space C, and the leakage of the dissolving solution is relieved. And facilitates guiding the entire fecal sampling rod 20 into the barrel body 10 when the fecal sampling rod 20 is inserted into the barrel body 10.

The above embodiment may be modified as follows. The tip portion 21 is formed with a sharp corner portion 213 at an end portion thereof, i.e., the diameter of the sharp corner portion 213 is gradually increased toward the base end portion to facilitate insertion into a specimen. The sharp corner 213 may be formed by chamfering or rounding the uppermost end of the tip portion 21 so that the diameter of the uppermost end of the tip portion 21 is gradually changed.

According to the technical scheme, the excrement collecting rod 20 provided by the embodiment can realize accurate and stable sample amount collected every time when excrement samples are collected through the containing part with a constant volume, and the assay precision is improved. Taking the accommodating part with the groove structure as an example, when pathological detection of intestinal cancer and adenoma diseases is carried out, the disease discovery rate can exceed 60 percent, and the testing precision is greatly improved.

Based on the stool sampling rod 20, some embodiments of the present application further provide a stool sampling tube, which includes the stool sampling rod 20 and the cylinder 10 provided in the above embodiments. The stool sampling rod 20 is detachably arranged in the cylinder 10, so that when a stool sample is collected, an operator can insert the top end part 21 of the stool sampling rod 20 into the shallow surface layer of the stool sample to enable the shallow surface layer of the sample to cover at least the accommodating part. Then, the stool sampling rod 20 is driven to perform a sliding operation, so that the sample is filled in the accommodating part. Finally, the fecal sampling stick 20 with the stool sample adhered thereto is inserted into the cylinder 10 so that the sample entered into the containing portion can be dissolved in the dissolving liquid.

In order to realize that the excrement collecting rod 20 is detachably arranged in the cylinder body 10, the excrement collecting rod 20 and the cylinder body 10 can be provided with mutually matched separable connecting structures. The specific separable connection mode can be set according to the operation habit and the precision requirement. For example, a threaded connection, a snap connection, etc. may be used. The threaded connection is suitable for the excrement collecting pipe with the cylindrical barrel 10, that is, threads can be respectively arranged on the excrement collecting rod 20 and the barrel 10, so that the threaded structures are mutually meshed in a screwing mode, and the separable connection is realized. The snap connection is suitable for the excrement collecting pipe with the square structure (or the cylindrical structure) of the barrel body 10, namely, a clamping groove and a snap are respectively arranged on the excrement collecting rod 20 and the barrel body 10, and the snap enters the clamping groove in an inserting mode to realize separable connection.

The cartridge 10 includes an outer wall 11, a partition wall 12, and a cylindrical wall 13. The outer wall 11 may be a cylindrical structure having a circular tube shape, or may be a cylindrical structure having other shapes, such as a square tube shape, a circular waist tube shape, and the like. The partition wall 12 is provided on the inner wall of the outer wall 11, and partitions the inner space of the cylinder 10 into a solution storage space a and a feces collection rod coupling space B. The solution storage space a is filled with a solution to be used in the assay, for example, different chemical solutions such as sodium sulfate, magnesium sulfate, and hydrogen peroxide. The amount of the dissolution solution can be determined according to the amount of the collected sample, and for example, in the case of collecting 2mg of the sample, 2ml of the dissolution solution is poured into the dissolution solution storage space a.

The partition wall 12 is provided with a hole 121, and at least a part of the tip 21 of the fecal sampling stick 20 can enter the solution containing space a through the hole 121 of the partition wall 12. The hole 121 can be engaged with the tip portion 21, and an excess sample on the tip portion 21 is scraped off by the hole 121, so that the amount of the sample entering the dissolution solution storage space a is the amount of the sample remaining in the storage portion.

Generally, by the reciprocating sliding performed on the superficial layer of the sample, a part of the sample enters and fills the containing cavity, and at the same time, a part of the sample adheres to the surface of the tip portion 21 or to the region above the containing cavity, which results in that the amount of the sample collected on the superficial layer of the sample is higher than the preset value. And the excessive sample size cannot be controlled, so that the precision of each acquisition process and the consistency of multiple acquisition processes are influenced.

For example, the stool sampling amount is designed to be 2mg, and the stool sampling amount of the stool sampling rod 20 is higher than 2mg after reciprocating on the superficial layer of the sample. Thus, in the present embodiment, in the process of inserting the fecal sampling rod 20 into the cylinder 10, the excess fecal sample can be scraped off the distal end portion 21 through the hole 121 of the partition wall 12, and only 2mg of the stool sample in the accommodating portion is retained, so that the accuracy of each sampling process can be maintained, and the consistency of the multiple sampling processes can be maintained.

In order to enable the aperture 121 to accurately scrape off excess sample, the remaining sample is maintained at a preset collection volume. The diameter of the hole 121 may be equal to the diameter of the tip portion 21. That is, the sample other than the container portion in the tip portion 21 is scraped off entirely through the hole 121, and only the sample in the container portion is left.

In order to prevent the scraped sample from leaking or contaminating the reagent in the solution storage space a, a feces collection space C dedicated to accommodating an excess sample may be provided in the cartridge 10. For this purpose, a cylindrical wall 13 is provided on the partition wall 12 so as to surround the hole 121. The distal end portion 21 of the fecal sampling stick 20 is passed through the cylindrical wall 13 and the hole 121, and the cylindrical wall 13 is tightly fitted to the enlarged diameter portion 22 to form the fecal collecting space C as well as the containing portion is inserted into the dissolved solution containing space A of the cylinder 10. The excrement collecting space C can be used for accommodating the redundant excrement samples scraped from the holes 121 on the partition wall 12 on one hand, and the redundant excrement samples are prevented from polluting other parts; on the other hand, a small amount of the dissolving solution possibly leaked from the hole 121 can be accommodated, so that the leaked dissolving solution and the redundant sample are prevented from flowing to other parts, and the pollution caused by the leakage is relieved.

In order to achieve that the fecal sampling rod 20 is detachably arranged in the cylinder 10, in one implementation, the inner surface of the outer wall 11 is provided with an internal thread and the base end 23 of the fecal sampling rod 20 is provided with an external thread. The containing portion is inserted into the solution containing space a of the cylinder 10 by screwing the female screw and the male screw.

Through the mutual screwing between the internal thread and the external thread, the excrement collecting rod 20 can be detachably connected with the cylinder 10, and the scraping precision of redundant samples can be improved. In the process of mutual screwing, the front end part 21 is inserted into the hole 121 along the axial direction, and relative movement is generated between the front end part 21 and the hole 121 in the circumferential direction, so that redundant samples on the front end part 21 are scraped in the axial direction and the circumferential direction simultaneously, and the accuracy of the residual sample amount after scraping is ensured.

In addition, the mutual screwing between the internal thread and the external thread can slow down the speed of inserting the excrement collecting rod 20 into the hole 121, has certain guiding effect on the inserting action, and relieves the damage of the excrement collecting rod 20 caused by excessive force of an operator. The internal thread and the external thread can be screwed with each other to seal the excrement collecting rod combining space B through the thread connection relationship, so that redundant samples or leaked dissolving liquid can be prevented from flowing out of the excrement collecting pipe again, and other articles are prevented from being polluted.

The above embodiment may be modified as follows. The top end part 21 is a cylindrical rod structure, and the hole 121 is a circular through hole; at least a portion of the tip 21 has a diameter greater than the diameter of the bore 121 to form an interference fit between the tip 21 and the bore 121.

In the embodiment of the present application, the interference fit may refer to a fit relationship formed by the partial diameter of the tip portion 21 being larger than the hole 121, or may refer to an interference fit relationship in a machining process, that is, a nominal diameter of the tip portion 21 and the hole 121 which are fitted to each other is the same, but a tolerance relationship of the interference fit is satisfied in terms of a machining accuracy requirement, that is, an upper tolerance limit of the hole 121 is 0, and a lower tolerance limit of the tip portion 21 is 0.

The interference fit relationship between the top end portion 21 and the hole 121 can meet the requirement of scraping the sample on the top end portion 21 by the hole 121, so that the sample amount remained in the accommodating portion is a preset sample amount; further, after the distal end portion 21 is inserted into the hole 121, the hole 121 can be completely closed, and leakage of the solution in the solution storage space a can be blocked.

Similarly, in another embodiment, the annular protrusion 221 is provided on the enlarged diameter portion 22. The diameter of the annular protrusion 221 is greater than the inner diameter of the cylindrical wall 13 to form an interference fit between the annular protrusion 221 and the cylindrical wall 13.

Since the diameter of the enlarged diameter portion 22 is larger than the distal end portion 21, the enlarged diameter portion 22 is less likely to be elastically deformed relative to the distal end portion 21. If the entire diameter-enlarged portion 22 is designed to have a diameter larger than the cylindrical wall 13, the resistance of the diameter-enlarged portion 22 after insertion into the cylindrical wall 13 will be excessively large, which is disadvantageous for inserting the fecal sampling rod 20 into the cylindrical body 10.

Thus, in the present embodiment, the diameter of the partial section of the enlarged diameter portion 22 is designed to be larger than the diameter of the cylindrical wall 13, and the annular protrusion 221 is formed. The position of the annular protrusion 221 can be determined according to the depth of insertion of the expanded diameter portion 22 into the cylindrical wall 13. For example, the ring protrusion 221 may be provided near the tip end portion 21. After the fecal sampling rod 20 is completely inserted into the cylinder 10, the distance between the annular protrusion 221 and the partition wall 12 is 17mm, which is equal to the length of the entire fecal collecting space C.

The diameter of the annular protrusion 221 may be slightly larger than the diameter of the enlarged diameter portion 22 at a section inserted into the cylindrical wall 13. Since the larger the diameter of the annular protrusion 221 is, the larger the amount of deformation of both parts required for insertion into the cylindrical wall 13 is, and the larger the entry resistance is, the diameter of the annular protrusion 221 is not preferably too large so that the enlarged diameter part 22 can enter the cylindrical wall 13. In practice, the diameter of the annular protrusion 221 may be set according to the overall size and material of the fecal sampling stick 20 and the cylindrical wall 13. For example, the diameter of the annular protrusion 221 is 0.1mm larger than the inner diameter of the cylindrical wall 13, and the diameter of the enlarged diameter portion 22 at a section located inside the cylindrical wall 13 may be equal to or smaller than the inner diameter of the cylindrical wall 13.

In order to facilitate the entry of the enlarged diameter portion 22 into the cylindrical wall 13, the annular protrusion 221 may have a chamfered structure or an arc-shaped structure, i.e., the diameter of the annular protrusion 221 gradually increases in the direction from the distal end portion 21 toward the proximal end portion 23. For example, the cross-section of the ring protrusion 221 is semicircular. The annular convex portion 221 may be formed in an arc shape only on the side closer to the distal end portion 21 so that the insertion resistance can be reduced when the enlarged diameter portion 22 is inserted into the cylindrical wall 13.

The above embodiment may be modified as follows. The excrement collecting tube further comprises a penetrating film 30, two ends of the outer wall 11 are respectively provided with a first opening portion 111 and a second opening portion 112, the penetrating film 30 is arranged on the first opening portion 111, and the second opening portion 112 is used for inserting the excrement collecting rod 10. In the case of sampling, the penetrating membrane 30 may close the first opening 111 of the outer wall 11 to form a solution storage space a. The penetrating film 30 may be made of a soft material such as plastic or aluminum foil, so that the air pressure in the solution containing space a can be balanced during insertion of the fecal sampling stick 20 into the tube 10, thereby preventing the fecal sampling stick 20 from being inserted into the tube or preventing the solution from leaking from the hole 121 of the partition wall 12 due to the change in air pressure.

The penetrating membrane 30 is also used to be penetrated by a needle, a syringe, or the like at the time of performing an assay, and to draw out the dissolved sample solution from the dissolving solution containing space a at the position of the first opening 11 so as to perform an assay. It can be seen that the penetrating membrane 30 can greatly simplify the operational complexity of the subsequent assay process, facilitating rapid completion of the assay.

According to the above technical solution, the stool sampling tube provided in the above embodiments can store and store the collected sample through the detachable connection between the stool sampling rod 20 and the cylinder 10. In addition, the matching relationship between the hole 121 on the partition wall 12 and the top end part 21 of the excrement sampling rod 20 can scrape off the redundant sample adhered on the excrement sampling rod 20, only the sample in the accommodating part is reserved, so that the sample amount collected each time is the residual sample amount in the accommodating part, namely the preset sample amount, and the sampling amount precision of the excrement sample is improved.

While there have been shown and described what are at present considered the fundamental principles and essential features of the application, and advantages of the application, it will be apparent to those skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics of the application. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.

Claims (29)

1. A stool sampling tube is characterized in that,

the excrement collecting pipe comprises a cylinder body, an excrement collecting rod and a penetrating film,

the cylinder body is formed by integrally molding an outer wall, a partition wall and a cylindrical wall,

the outer wall of the cylinder is cylindrical, the upper end of the cylinder is provided with a first opening part, the lower end of the cylinder is provided with a second opening part,

the partition wall of the cylinder is formed on the inner side of the outer wall in a way of being vertical to the axial direction of the outer wall, the inner space of the cylinder is divided into a solution containing space on the upper side and a feces collecting rod combining space on the lower side, the partition wall is provided with holes,

a cylindrical wall of the cylinder is formed inside the outer wall, and extends cylindrically from the partition wall to the feces collection rod coupling space so as to surround the hole,

the excrement collecting rod comprises a top end part, an expanding part and a base end part,

the top end part of the excrement collecting rod is cylindrical, at least one groove is arranged on the side surface,

the enlarged diameter portion of the fecal sampling rod is formed between the distal end portion and the proximal end portion, and has an enlarged diameter relative to the diameter of the distal end portion,

the penetrating membrane is attached to the outer wall of the cylindrical body so as to close the first opening portion of the outer wall of the cylindrical body,

the distal end portion of the fecal sampling rod is inserted from the second opening portion of the outer wall of the tubular body and passes through the hole of the partition wall of the tubular body so that the at least one groove of the fecal sampling rod is located in the dissolved solution containing space of the tubular body, the side surface of the distal end portion of the fecal sampling rod is in close fit with the inner edge of the hole of the partition wall of the tubular body, and the diameter-expanded portion of the fecal sampling rod is in close fit with the cylindrical wall of the tubular body, and the partition wall, the cylindrical wall of the tubular body and the diameter-expanded portion of the fecal sampling rod together form a closed fecal collecting space.

2. A fecal sampling tube according to claim 1,

the outer wall of the cylinder includes an internal thread portion having an internal thread formed on an inner surface thereof, the internal thread portion being located at a portion near a lower end among the inner surface of the outer wall,

the proximal end portion of the fecal sampling rod includes an external thread portion having an external thread formed on an outer side surface thereof, the external thread portion being located on at least a part of an outer side surface of the cylindrical proximal end portion,

the female screw portion of the cylinder and the male screw portion of the fecal sampling rod are screwed together, and the portion of the top end portion of the fecal sampling rod, in which the at least one groove is formed, passes through the hole of the partition wall of the cylinder and enters the solution containing space of the cylinder.

3. A fecal sampling tube according to claim 1,

the inner diameter of the cylindrical wall of the cylinder is larger than the diameter of the hole of the partition wall of the cylinder,

an inclined portion is integrally formed from an inner side surface of the cylindrical wall toward an edge of the hole of the partition wall in the vicinity of an upper end of the cylindrical wall,

a sharp corner part is formed at the topmost end of the top end part of the excrement collecting rod,

the inclination angle of the inclined part is the same as that of the sharp corner part of the excrement collecting rod.

4. A fecal sampling tube according to claim 2,

the outer wall of the cylinder, the hole of the partition wall and the cylindrical wall are integrally formed in a coaxial manner,

the outer wall of the cylinder, the hole of the partition, and the cylindrical wall are disposed coaxially with the distal end portion, the diameter-enlarged portion, and the proximal end portion of the fecal sampling rod in a state where the female screw portion of the cylinder and the male screw portion of the fecal sampling rod are screwed with each other,

the diameter of the enlarged diameter portion of the fecal sampling rod on the side closer to the distal end portion is equal to or less than the diameter of the enlarged diameter portion on the side closer to the proximal end portion,

the diameter of the enlarged diameter portion of the fecal sampling rod on the side close to the distal end portion is smaller than the inner diameter of the cylindrical wall of the cylindrical body, and the diameter of at least a part of the enlarged diameter portion on the side close to the proximal end portion is larger than the inner diameter of the cylindrical wall of the cylindrical body.

5. A fecal sampling tube according to claim 4,

the top end of the fecal sampling rod includes a structure having a diameter greater than the diameter of the bore of the barrel spacer wall, whereby the top end forms an interference fit with the bore of the spacer wall.

6. A fecal sampling tube according to claim 4,

an annular convex part is formed on the side of the diameter-expanded part of the excrement collecting rod close to the base end part,

the annular protrusion has a diameter greater than an inner diameter of the cylindrical wall of the barrel, whereby the annular protrusion forms an interference fit with the cylindrical wall of the barrel.

7. A fecal sampling tube according to claim 4,

in a state where the internal thread portion of the cylinder and the external thread portion of the stool collection rod are screwed with each other, an interference fit is formed between the internal thread portion of the cylinder and the external thread portion of the stool collection rod.

8. A fecal sampling tube according to claim 4,

the length of the excrement collecting space along the inserting direction of the excrement collecting rod is longer than the length of the excrement collecting rod in the largest excrement collecting range.

9. A fecal sampling tube according to claim 4,

the diameter of the hole of the partition wall of the cylinder is smaller than the minimum hole diameter through which the solution contained in the solution containing space closed by the penetrating membrane can leak out.

10. A fecal sampling tube according to claim 2,

two grooves are formed in the side surface of the top end part of the excrement collecting rod, the two grooves are arranged along the axial direction of the top end part at the same position of the circumferential direction of the top end part,

a grip head is further formed below the proximal end portion of the fecal sampling stick, a fecal sampling stick indicator is formed on a portion of a side surface of the grip head,

a label is adhered to at least a part of the outer wall of the cylinder, a cylinder indication part is formed on a part of the label,

the fecal sampling stick indicating portion of the grip head has the same orientation in the circumferential direction as the two grooves of the tip portion,

the stool collection rod indicator of the grip head and the tube indicator of the label are circumferentially aligned with each other in a state where the female screw portion of the tube and the male screw portion of the stool collection rod are completely screwed together.

11. A fecal sampling tube according to claim 10,

the lower end face of the holding head is provided with an inner hexagonal hole.

12. A fecal sampling tube according to claim 1,

a flange portion extending radially outward is formed at an upper end of the outer wall of the cylinder,

the penetrating film is engaged with the flange portion of the outer wall of the cylinder, thereby closing the first opening portion of the outer wall of the cylinder.

13. A fecal sampling tube according to any of the claims 1 to 9, 12,

a label is attached to at least a part of the outer wall of the cylinder, and a window for observing the feces collection space through the outer wall and the cylindrical wall is formed in a part of the label corresponding to the cylindrical wall.

14. A faecal collection tube according to claim 10 or 11,

a window for observing the feces collection space through the outer wall and the cylindrical wall is formed in a portion of the label corresponding to the cylindrical wall.

15. A stool sampling rod is characterized in that,

the stool sampling rod comprises: a distal end portion, an enlarged diameter portion, and a proximal end portion;

the base end part is connected with the top end part through the expanding part so as to drive the top end part to move on the superficial surface of the sample;

wherein the top end part is a rod-shaped structure; the top portion is provided with an accommodating portion for accommodating collected samples, and the volume of the accommodating portion is equal to the volume corresponding to the preset sample amount.

16. The feces collection stick of claim 15,

the accommodating portion includes at least one groove provided on a side surface of the tip portion.

17. The feces collection rod of claim 16,

a plurality of the grooves are arranged in the axial direction of the tip portion at the same orientation on the circumferential surface of the tip portion;

a holding head is arranged on the base end part, and an excrement collecting rod indicating part is arranged on the side surface of the holding head; the stool sampling rod indicating part and the groove are in the same orientation in the circumferential direction.

18. The feces collection rod of claim 16,

the groove has a groove bottom area smaller than an opening area to facilitate the sample to fill the accommodating space formed on the top end portion of the groove.

19. The feces collection rod of claim 18,

the side wall of the groove is a slope surface which is obliquely arranged relative to the groove bottom so as to increase the opening area of the groove.

20. The feces collection rod of claim 16,

and an arc transition structure is arranged between the groove bottom of the groove and the side wall and/or the adjacent side wall so as to reduce the formation of a gas cavity.

21. The feces collection stick of claim 15,

the accommodating part comprises at least one annular groove formed in the side surface of the top end part; the volume of the accommodating space formed by the annular groove on the top end part is equal to the volume corresponding to the preset sample amount.

22. The feces collection stick of claim 15,

the accommodating part comprises a thread groove arranged on the side surface of the top end part; the volume of an accommodating space formed on the top end part by the thread groove is equal to the volume corresponding to the preset sample amount.

23. The feces collection stick of claim 15,

the top end part, the expanding part and the base end part are of a stepped shaft structure which is integrally formed;

the diameter of the proximal portion is larger than that of the distal portion, and the diameter of the enlarged diameter portion gradually increases from the distal portion toward the proximal portion.

24. The feces collection stick of claim 15,

the tip portion is formed at an end portion position thereof with a pointed portion having a diameter gradually increasing in a direction toward the base end portion so as to be inserted into a specimen.

25. A fecal sampling tube, comprising: a fecal sampling rod according to any one of claims 15 to 24 and a cartridge; the excrement collecting rod is detachably arranged in the cylinder;

wherein the barrel comprises an outer wall, a partition wall and a barrel-shaped wall; the partition wall is arranged on the inner side surface of the outer wall and divides the inner space of the cylinder into a solution containing space and an excrement collecting rod combining space; the partition wall is provided with a hole, and the cylindrical wall is arranged on the partition wall in a mode of surrounding the hole;

the top end part of the excrement collecting rod penetrates through the cylindrical wall and the hole, so that the accommodating part enters the dissolving liquid accommodating space of the cylinder, and the cylindrical wall is tightly matched with the diameter-expanding part to form an excrement collecting space.

26. A fecal sampling tube according to claim 25,

the inner surface of the outer wall is provided with internal threads, and the base end part of the excrement collecting rod is provided with external threads; the accommodating part enters the dissolving solution accommodating space of the cylinder body through the mutual screwing of the internal thread and the external thread.

27. A fecal sampling tube according to claim 25,

the top end part is of a cylindrical rod structure, and the hole is a circular through hole;

the tip portion includes a structure having a diameter greater than a diameter of the bore to form an interference fit between the tip portion and the bore.

28. A fecal sampling tube according to claim 25,

the diameter expanding part is provided with an annular convex part; the diameter of the annular ledge is greater than the inner diameter of the cylindrical wall to form an interference fit between the annular ledge and the cylindrical wall.

29. A fecal sampling tube according to claim 25,

the excrement collecting tube further comprises a penetrating film, a first opening part and a second opening part are respectively arranged at two ends of the outer wall, the penetrating film is arranged on the first opening part, and the second opening part is used for inserting the excrement collecting rod.

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