Device for detecting occult blood in excrement

Abstract

The utility model discloses a device for detecting occult blood in faeces, which comprises a shell, a first reagent cavity, a second reagent cavity, a mixing cavity and a precipitation cavity are arranged in the shell; a preset solution is arranged in the first reagent cavity and the second reagent cavity, both the first reagent cavity and the second reagent cavity are communicated with the mixing cavity, and a partition structure is arranged at the communication part; the first reagent cavity, the second reagent cavity and the mixing cavity are separated by partition plates, and the partition plates and the shell are connected into a whole; an opening is formed in the top of the mixing cavity, a sealing cover is arranged at the opening, and the sealing cover is detachably connected with the mixing cavity. The excrement is added into the mixing cavity, and then the preset solutions in the first reagent cavity and the second reagent cavity enter the mixing cavity, so that the two solutions are fully mixed with the excrement. The two preset solutions and the excrement are mixed in a sealed state, and gas generated after mixing cannot be released into air, so that contact with medical staff during detection is avoided, and the health of the medical staff is prevented from being damaged.

Description

Technical Field

[0001] The embodiments of this utility model belong to the field of fecal detection technology, and more specifically, relate to a device for detecting occult blood in feces. Background Technology

[0002] Fecal occult blood testing is a common method for screening for gastrointestinal bleeding. Occult blood refers to trace amounts of blood invisible to the naked eye, which may originate from various parts of the digestive tract, including the stomach, small intestine, large intestine, and rectum. Gastrointestinal bleeding can be an early symptom of many diseases, such as gastric ulcers, colonic polyps, inflammatory bowel diseases (e.g., Crohn's disease and ulcerative colitis), and colorectal cancer. Therefore, fecal occult blood testing is a simple and effective screening tool, playing a vital role in the early detection of gastrointestinal bleeding and the prevention of related diseases. Fecal occult blood testing primarily relies on chemical reactions or immunological methods to detect hemoglobin or its breakdown products in feces.

[0003] Common detection methods include: 1. Guaiacin method: This method utilizes the peroxidase activity in hemoglobin to catalyze the decomposition of hydrogen peroxide to produce oxygen, which in turn oxidizes guaiacin to form a colored compound. 2. Potassium ferrocyanide method: Potassium ferrocyanide mixed with hydrochloric acid reacts with hemoglobin in feces to form a Prussian blue precipitate, indicating the presence of occult blood. 3. Immunochemical method: This method uses specific antibodies to detect hemoglobin or its decomposition products in feces. Among these, the potassium ferrocyanide method is simple to operate, low in cost, suitable for large-scale screening and widespread use, and reacts rapidly, providing results within minutes for timely diagnosis and treatment.

[0004] However, conventional methods involve conducting tests in open glass containers. The mixing of potassium ferrocyanide and hydrochloric acid releases hydrogen cyanide gas, a highly toxic gas that is carcinogenic with prolonged exposure. This increases the amount of gas inhaled by healthcare workers during large-scale testing, negatively impacting their health. Therefore, a device is needed for detecting occult blood in feces that operates in a sealed environment, preventing contact between healthcare workers and reagents, reducing their risk of infection, while also simplifying the testing process and improving efficiency. Utility Model Content

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this utility model provides a device for detecting occult blood in feces. Equal volumes of potassium ferrocyanide solution and hydrochloric acid solution are pre-placed in a first reagent chamber and a second reagent chamber, respectively. During testing, an appropriate amount of feces is added to the mixing chamber, and then the pre-placed solutions from the first and second reagent chambers are introduced into the mixing chamber. After thorough mixing of the two solutions with the feces, the mixed solution is allowed to precipitate in the sedimentation chamber. The presence of a blue precipitate is observed to determine the test result. The mixing of the two pre-placed solutions is carried out in a sealed state, preventing the gas generated after mixing from being released into the air, thus avoiding contact with medical personnel during testing and ensuring their health is not harmed.

[0006] To achieve the above objectives, this utility model provides a device for detecting occult blood in feces, comprising: a housing, wherein the housing is provided with a first reagent chamber, a second reagent chamber, a mixing chamber and a sedimentation chamber;

[0007] The first reagent chamber and the second reagent chamber are provided with a pre-prepared solution, and both are connected to the mixing chamber, with a partition structure at the connection point;

[0008] The first reagent chamber, the second reagent chamber, and the mixing chamber are separated by a partition plate, which is integrally connected to the housing.

[0009] The top of the mixing chamber has an opening, and a sealing cover is provided at the opening. The sealing cover is detachably connected to the mixing chamber.

[0010] Furthermore, the pre-prepared solution in the first reagent chamber is a potassium ferrocyanide solution, and the pre-prepared solution in the second reagent chamber is a hydrochloric acid solution;

[0011] The potassium ferrocyanide solution and the hydrochloric acid solution have the same volume.

[0012] Furthermore, a filter screen is provided between the mixing chamber and the sedimentation chamber.

[0013] Furthermore, the partition structure is a partition head;

[0014] The partition head is located on the partition plate at the separation between the first reagent chamber and the mixing chamber, and the partition plate has a connecting hole;

[0015] The partition head is also provided on the partition plate at the partition between the second reagent chamber and the mixing chamber, and the partition plate has a connecting hole.

[0016] Furthermore, the tail of the partition head is connected to the edge of the connecting hole, and the two are connected by a brittle plastic, which is thinner than the partition plate.

[0017] The head of the partition extends away from the first reagent chamber.

[0018] Furthermore, each of the mixing chambers is provided with a top plate on its inner wall, the head of which contacts the side of the head of the partition head.

[0019] The housing in the mixing chamber is a rigid plastic shell that undergoes slight deformation when compressed.

[0020] Furthermore, the partition structure is a temporary sealing plate;

[0021] The temporary sealing plate is located on the partition plate at the separation between the first reagent chamber and the mixing chamber, and the partition plate has a connecting hole;

[0022] The temporary sealing plate is also provided on the partition plate at the separation between the second reagent chamber and the mixing chamber, and the partition plate has a connecting hole.

[0023] Furthermore, the temporary sealing plate is disposed inside the connecting hole and connected to the edge of the connecting hole. The two are connected by a brittle plastic, and the brittle plastic is thinner than the partition plate.

[0024] Furthermore, the first reagent chamber and the second reagent chamber are also provided with force transmission channels;

[0025] The tail end of the force transmission channel is located on the side of the housing and communicates with the outside. The communication port is provided, and the head end is provided with an elastic sealing bag, which isolates the first reagent chamber and the second reagent chamber from the outside.

[0026] Furthermore, a force transmission rod is provided in the force transmission channel;

[0027] One end of the force transmission rod is located at the connection port of the force transmission channel and is rotatably connected to the connection port via a stopcock; the other end of the force transmission rod is connected to the elastic sealing bag.

[0028] One end of the force transmission rod connected to the elastic sealing bag is in contact with the temporary sealing plate;

[0029] The plug and the connection port are connected by a thread. When the plug is rotated, the force transmission rod moves towards the end closer to the temporary sealing plate.

[0030] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects:

[0031] 1. The device of this invention pre-places equal volumes of potassium ferrocyanide solution and hydrochloric acid solution in a first reagent chamber and a second reagent chamber, respectively. During testing, an appropriate amount of feces is added to the mixing chamber, and then the pre-placed solutions from the first and second reagent chambers are introduced into the mixing chamber. After the two solutions are thoroughly mixed with the feces, the mixed solution is allowed to precipitate in the precipitation chamber. The presence of a blue precipitate is observed to determine the test result. The mixing of the two pre-placed solutions is carried out in a sealed state, preventing the gas generated after mixing from being released into the air, thus avoiding contact with medical personnel during testing and ensuring their health is not harmed.

[0032] 2. In the device of this utility model, the partition head or temporary sealing plate falls into the mixing chamber and is mixed with the two pre-prepared solutions and feces. After mixing, it needs to be shaken to ensure that the two pre-prepared solutions and feces are fully mixed. During the mixing process, the partition head or temporary sealing plate acts as an auxiliary stirrer to decompose the feces into smaller particles, so that it is mixed more fully with the pre-prepared solutions and improves the detection effect.

[0033] 3. The device of this utility model has a filter screen between the mixing chamber and the sedimentation chamber. After the fecal solution is fully mixed, it is filtered out by the filter screen and then falls into the sedimentation chamber for observation. This avoids observation errors caused by the obstruction of large particles, improves the accuracy of the judgment of gastrointestinal bleeding, and improves the work efficiency of medical staff. Attached Figure Description

[0034] Figure 1 This is a first-view structural cross-sectional view of a device for detecting occult blood in feces according to an embodiment of the present invention.

[0035] Figure 2 This is a second-view structural cross-sectional view of a device for detecting occult blood in feces according to an embodiment of the present invention;

[0036] Figure 3 This is a third-view structural cross-sectional view of a device for detecting occult blood in feces according to an embodiment of the present invention;

[0037] Figure 4 This is a top view of a device for detecting occult blood in feces according to an embodiment of the present invention;

[0038] Figure 5 for Figure 4 Schematic diagram of section AA;

[0039] Figure 6 for Figure 5 Schematic diagram of the BB section;

[0040] Figure 7 This is a first-view structural cross-sectional view of Embodiment 2 of the present invention;

[0041] Figure 8 This is a second-view structural cross-sectional view of Embodiment 2 of the present invention;

[0042] Figure 9 This is a third-view structural cross-sectional view of Embodiment 2 of this utility model.

[0043] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-first reagent chamber, 2-second reagent chamber, 3-mixing chamber, 4-precipitation chamber, 5-partition head, 6-filter screen, 7-sealing cap, 8-temporary sealing plate, 9-elastic sealing bag, 10-force transmission rod, 11-stopcock. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0045] Example 1

[0046] like Figure 1-6 As shown in the figure, this utility model embodiment provides a device for detecting occult blood in feces, including a housing. The housing includes a first reagent chamber 1 and a second reagent chamber 2 arranged adjacent to each other, a mixing chamber 3 disposed on the side of the first reagent chamber 1 and the second reagent chamber 2, and a sedimentation chamber 4 disposed at the bottom of the mixing chamber 3. Both the first reagent chamber 1 and the second reagent chamber 2 contain pre-prepared solutions. The pre-prepared solution in the first reagent chamber 1 is a potassium ferrocyanide solution, and the pre-prepared solution in the second reagent chamber 2 is a hydrochloric acid solution. The potassium ferrocyanide solution and the hydrochloric acid solution have the same volume. During detection, an appropriate amount of feces is added to the mixing chamber 3, and then the pre-prepared solutions from the first reagent chamber 1 and the second reagent chamber 2 are introduced into the mixing chamber 3 to fully mix the two solutions with the feces. The mixed solution is then allowed to precipitate in the sedimentation chamber 4, and the presence of a blue precipitate is observed to determine the detection result.

[0047] The shell is a block with a flat outer surface, and the partition plates between the internal cavities are connected to the shell to form a whole. The shell at the mixing chamber 3 is a rigid plastic shell, which can undergo slight deformation when compressed.

[0048] A partition structure, specifically a partition head 5, is provided at the connection between the first reagent chamber 1 and the mixing chamber 3. The partition head 5 is located on a partition plate at the separation point between the first reagent chamber 1 and the mixing chamber 3, and the partition plate has a connecting hole. The tail of the partition head 5 is connected to the edge of the connecting hole, and the two are connected by a brittle plastic, which is thinner than the partition plate so that it can break directly under force. The head of the partition head 5 extends away from the first reagent chamber 1.

[0049] A partition structure, specifically a partition head 5, is provided at the connection between the second reagent chamber 2 and the mixing chamber 3. The partition head 5 is located on a partition plate at the separation point between the second reagent chamber 2 and the mixing chamber 3, and the partition plate has a connecting hole. The tail of the partition head 5 is connected to the edge of the connecting hole, and the two are connected by a brittle plastic, which is thinner than the partition plate so that it can break directly under force. The head of the partition head 5 extends away from the first reagent chamber 1.

[0050] Each mixing chamber 3 has a top plate on its inner wall. The head of the top plate contacts the side of the head of the partition head 5. When an external force is applied to the mixing chamber 3, the top plate moves towards the partition head 5, applying force to the partition head 5 and causing the brittle plastic to break, thus connecting the first reagent chamber 1 and the second reagent chamber 2 with the mixing chamber 3. The pre-prepared solution in these chambers flows into the mixing chamber 3 for mixing.

[0051] Preferably, the two partition heads 5 fall into the mixing chamber 3. After they are mixed with the two pre-prepared solutions and feces, they need to be shaken to ensure that the two pre-prepared solutions and feces are fully mixed. During the mixing process, the partition heads 5 act as auxiliary stirrers to break down the feces into smaller particles so that they are mixed more thoroughly with the pre-prepared solutions and improve the detection effect.

[0052] A filter screen 6 is installed between the mixing chamber 3 and the sedimentation chamber 4. After the feces and the pre-prepared solution are mixed in the mixing chamber 3, they pass through the filter screen 6 to filter out large particulate impurities before entering the sedimentation chamber 4. The test results are determined by observing whether there is a blue precipitate among the fine particles in the sedimentation chamber 4.

[0053] The mixing chamber 3 has an opening at its top, and a sealing cover 7 is installed at this opening. The sealing cover 7 is detachably connected to the opening of the mixing chamber 3, and a sealing ring is provided between them. Feces are placed into the mixing chamber 3 through this opening. After the sealing cover 7 is closed, the pre-prepared solutions from the first reagent chamber 1 and the second reagent chamber 2 flow into the mixing chamber 3 and mix with the feces. The mixing of the two pre-prepared solutions takes place in a sealed state, preventing the gas generated after mixing from being released into the air, thus avoiding contact with medical personnel during testing and ensuring their health is not harmed.

[0054] Example 2

[0055] like Figure 7-9 As shown in the figure, this utility model embodiment provides another device for detecting occult blood in feces, including a housing. The housing includes a first reagent chamber 1 and a second reagent chamber 2 arranged adjacent to each other, a mixing chamber 3 disposed on the side of the first reagent chamber 1 and the second reagent chamber 2, and a sedimentation chamber 4 disposed at the bottom of the mixing chamber 3. Both the first reagent chamber 1 and the second reagent chamber 2 contain pre-prepared solutions. The pre-prepared solution in the first reagent chamber 1 is a potassium ferrocyanide solution, and the pre-prepared solution in the second reagent chamber 2 is a hydrochloric acid solution. The potassium ferrocyanide solution and the hydrochloric acid solution have the same volume. During detection, an appropriate amount of feces is added to the mixing chamber 3, and then the pre-prepared solutions from the first reagent chamber 1 and the second reagent chamber 2 are introduced into the mixing chamber 3 to fully mix the two solutions with the feces. The mixed solution is then allowed to precipitate in the sedimentation chamber 4, and the presence of a blue precipitate is observed to determine the detection result.

[0056] The shell is a block with a flat outer surface, and the partitions between the internal cavities are connected to the shell to form a whole. The shell is made of rigid plastic and can deform slightly when compressed.

[0057] A partition structure, specifically a temporary sealing plate 8, is provided at the connection between the first reagent chamber 1 and the mixing chamber 3. The temporary sealing plate 8 is located on the partition plate separating the first reagent chamber 1 and the mixing chamber 3, and has a connecting hole. The temporary sealing plate 8 is the same size and shape as the connecting hole, is located within the connecting hole, and is connected to the edge of the connecting hole. The two are connected by a brittle plastic, which is thinner than the partition plate, allowing it to break directly under stress. The first reagent chamber 1 also has a force transmission channel. The tail end of the force transmission channel is located on the side of the shell and connects to the outside. A connection port is provided at the connection point, and an elastic sealing bag 9 is provided at its head, which isolates the first reagent chamber 1 from the outside. A force transmission rod 10 is provided in the force transmission channel. One end of the force transmission rod 10 is located at the connection port of the force transmission channel and is rotatably connected to the connection port via a stopcock 11. The other end of the force transmission rod 10 is connected to the elastic sealing bag 9. One end of the force transmission rod 10 connected to the elastic sealing bag 9 contacts the temporary sealing plate 8. The stopcock 11 is threadedly connected to the connection port. When the stopcock 11 is rotated, the force transmission rod 10 moves towards the end closer to the temporary sealing plate 8, causing the brittle plastic to break under force, connecting the first reagent chamber 1 and the mixing chamber 3, where the pre-prepared solution flows into the mixing chamber 3 for mixing.

[0058] A partition structure, specifically a temporary sealing plate 8, is provided at the connection between the second reagent chamber 2 and the mixing chamber 3. The temporary sealing plate 8 is located on the partition plate separating the second reagent chamber 2 and the mixing chamber 3, and has a connecting hole. The temporary sealing plate 8 is the same size and shape as the connecting hole, is located within the connecting hole, and is connected to the edge of the connecting hole. The two are connected by a brittle plastic, which is thinner than the partition plate, allowing it to break directly under stress. The second reagent chamber 2 also has a force transmission channel. The tail of the force transmission channel is located on the side of the shell and connects to the outside. A connection port is provided at the connection point, and an elastic sealing bag 9 is provided at its head, which isolates the second reagent chamber 2 from the outside. A force transmission rod 10 is provided in the force transmission channel. One end of the force transmission rod 10 is located at the connection port of the force transmission channel and is rotatably connected to the connection port via a stopcock 11. The other end of the force transmission rod 10 is connected to the elastic sealing bag 9. One end of the force transmission rod 10 connected to the elastic sealing bag 9 contacts the temporary sealing plate 8. The stopcock 11 is threadedly connected to the connection port. When the stopcock 11 is rotated, the force transmission rod 10 moves towards the end closer to the temporary sealing plate 8, causing the brittle plastic to break under force, connecting the second reagent chamber 2 and the mixing chamber 3, where the pre-prepared solution flows into the mixing chamber 3 for mixing.

[0059] Preferably, the two temporary sealing plates 8 fall into the mixing chamber 3. After they are mixed with the two pre-prepared solutions and feces, they need to be shaken to ensure that the two pre-prepared solutions and feces are fully mixed. During the mixing process, the temporary sealing plates 8 act as auxiliary stirrers to decompose the feces into smaller particles, so that they are mixed more fully with the pre-prepared solutions and the detection effect is improved.

[0060] A filter screen 6 is installed between the mixing chamber 3 and the sedimentation chamber 4. After the feces and the pre-prepared solution are mixed in the mixing chamber 3, they pass through the filter screen 6 to filter out large particulate impurities before entering the sedimentation chamber 4. The test results are determined by observing whether there is a blue precipitate among the fine particles in the sedimentation chamber 4.

[0061] The mixing chamber 3 has an opening at its top, and a sealing cover 7 is installed at this opening. The sealing cover 7 is detachably connected to the opening of the mixing chamber 3, and a sealing ring is provided between them. Feces are placed into the mixing chamber 3 through this opening. After the sealing cover 7 is closed, the pre-prepared solutions from the first reagent chamber 1 and the second reagent chamber 2 flow into the mixing chamber 3 and mix with the feces. The mixing of the two pre-prepared solutions takes place in a sealed state, preventing the gas generated after mixing from being released into the air, thus avoiding contact with medical personnel during testing and ensuring their health is not harmed.

[0062] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for detecting occult blood in feces, characterized by, include: The housing includes a first reagent chamber (1), a second reagent chamber (2), a mixing chamber (3), and a precipitation chamber (4). The first reagent chamber (1) and the second reagent chamber (2) are provided with a pre-prepared solution, both of which are connected to the mixing chamber (3), and the connection is provided with a partition structure; The first reagent chamber (1), the second reagent chamber (2), and the mixing chamber (3) are separated by a partition plate, which is connected to the shell as a whole; The top of the mixing chamber (3) is provided with an opening, and a sealing cover is provided at the opening. The sealing cover is detachably connected to the mixing chamber (3).

2. The device for detecting occult blood in feces according to claim 1, wherein The pre-prepared solution in the first reagent chamber (1) is potassium ferrocyanide solution, and the pre-prepared solution in the second reagent chamber (2) is hydrochloric acid solution; The potassium ferrocyanide solution and the hydrochloric acid solution have the same volume.

3. The device for detecting occult blood in feces according to claim 1, wherein A filter screen (6) is provided between the mixing chamber (3) and the sedimentation chamber (4).

4. A device for detecting occult blood in feces according to any one of claims 1 to 3, characterized in that, The partition structure is a partition head (5); The partition head (5) is located on the partition plate at the separation between the first reagent chamber (1) and the mixing chamber (3), and the partition plate has a connecting hole; The partition head (5) is also provided on the partition plate at the partition between the second reagent chamber (2) and the mixing chamber (3), and the partition plate has a connecting hole.

5. A device for detecting occult blood in feces according to claim 4, characterized in that, The tail of the partition head (5) is connected to the edge of the connecting hole, and the two are connected by a brittle plastic, which is thinner than the partition plate. The head of the partition head (5) extends away from the first reagent chamber (1).

6. A device for detecting occult blood in feces according to claim 5, wherein The inner wall of the mixing chamber (3) is provided with a top plate, the head of which contacts the side of the head of the partition head (5). The housing at the mixing chamber (3) is a hard plastic shell, which undergoes slight deformation when squeezed.

7. A device for detecting occult blood in feces according to any one of claims 1 to 3, characterized in that, The partition structure is a temporary sealing plate (8); The temporary sealing plate (8) is provided on the partition plate at the separation between the first reagent chamber (1) and the mixing chamber (3), and the partition plate has a connecting hole; The temporary sealing plate (8) is also provided on the partition plate at the separation between the second reagent chamber (2) and the mixing chamber (3), and the partition plate has a connecting hole.

8. A device for detecting occult blood in feces according to claim 7, characterized in that, The temporary sealing plate (8) is located inside the connecting hole and connected to the edge of the connecting hole. The two are connected by a brittle plastic, and the brittle plastic is thinner than the partition plate.

9. A device for detecting occult blood in feces according to claim 8, characterized in that, The first reagent chamber (1) and the second reagent chamber (2) are also provided with force transmission channels; The tail of the force transmission channel is located on the side of the shell and communicates with the outside. A connection port is provided at the connection point, and an elastic sealing bag (9) is provided at its head. The first reagent chamber (1) and the second reagent chamber (2) are isolated from the outside through the elastic sealing bag (9).

10. A device for detecting occult blood in feces according to claim 9, wherein The force transmission channel is equipped with a force transmission rod (10); One end of the force transmission rod (10) is located at the connection port of the force transmission channel and is rotatably connected to the connection port by a stopcock (11). The other end of the force transmission rod (10) is connected to the elastic sealing bag (9). One end of the force transmission rod (10) connected to the elastic sealing bag (9) is in contact with the temporary sealing plate (8); The plug (11) is threaded to the connection port. When the plug (11) rotates, the force transmission rod (10) moves toward the end closer to the temporary sealing plate (8).

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