Sampling device for early stage of gastric cancer

Abstract

The utility model discloses a sample sampling device for the early stage of gastric cancer, which relates to the technical field of medical equipment and comprises a gastric lavage tube and an inner tube, the inner tube is arranged inside the gastric lavage tube, one end of the gastric lavage tube is fixedly provided with an insertion end, and one end of the inner tube is fixedly provided with an expansion rubber plug. By arranging the gastric lavage tube, the inner tube, the insertion end and the expansion rubber plug, when stomach sampling is carried out on a patient, the expansion rubber plug is located in the insertion end and blocks the insertion end in a contracted state, so that the situation that the insertion end rubs the esophagus of the patient to cause discomfort of the patient when the insertion end is inserted into the stomach of the patient is avoided; after the insertion end is inserted into the stomach of a patient, lavage fluid is injected through the lavage tube in a pressurized mode, at the moment, the expansion rubber plug is pushed out under the pressure effect of the lavage fluid, the lavage fluid is guided through the flow guide groove in the outer side of the expansion rubber plug, the lavage fluid flows into the stomach of the patient after being buffered, and therefore discomfort of the patient caused by injection of the lavage fluid is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a sampling device for early-stage gastric cancer samples. Background Art

[0002] Gastric cancer is a malignant tumor that originates from the gastric mucosal epithelium. It can occur anywhere in the stomach, with more than half occurring in the antrum. The greater and lesser curvatures of the stomach, as well as the anterior and posterior walls, can all be affected. The vast majority of gastric cancers are adenocarcinomas, which present as no obvious early symptoms or may present with nonspecific symptoms such as upper abdominal discomfort and belching. These symptoms often mimic those of chronic gastric diseases such as gastritis and gastric ulcers and can be easily overlooked. During the examination for early gastric cancer, a gastric lavage device is used to inject a cleaning fluid into the patient's stomach. The lavage fluid, which contains exfoliated cells from the gastric mucosal tissue, is then extracted for examination and screening.

[0003] In the prior art, gastric lavage is generally used to obtain samples from the patient's stomach. The specific operation is to insert a special rubber catheter into the stomach through the mouth or nose, and inject warm (or ice) saline or other lavage fluid (such as 1 / 5000 potassium permanganate solution). After a sufficient amount of liquid is injected, the lavage fluid is drawn out by siphoning or suction to clean the substances accumulated in the stomach.

[0004] However, when the existing gastric lavage tube is inserted into the patient's stomach through the oral or nasal cavity, the end of the gastric lavage tube is prone to scratching the patient's esophagus, causing damage to the patient's esophagus and aggravating the patient's discomfort. In addition, due to the high pressure in the patient's stomach, the lavage fluid needs to be pressurized and injected into the patient's stomach. When the pressurized lavage fluid is ejected through the gastric lavage tube, it will have a certain impact on the patient's stomach, further aggravating the patient's discomfort and hindering the sampling work.

[0005] Therefore, it is necessary to invent a gastric cancer early stage sample sampling device to solve the above problems. Utility Model Content

[0006] The purpose of the present invention is to provide a device for collecting samples for early-stage gastric cancer, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a sampling device for early gastric cancer, comprising a gastric lavage tube and an inner tube, wherein the inner tube is disposed inside the gastric lavage tube, an insertion end being fixedly disposed at one end of the gastric lavage tube, and an expandable rubber plug being fixedly disposed at one end of the inner tube, and the expandable rubber plug being slidably disposed inside the insertion end;

[0008] The expansion rubber plug is configured as a conical structure, a plurality of rubber protrusions are fixedly provided on the top of the outer wall of the expansion rubber plug, and the plurality of rubber protrusions are arranged in a circumferential manner, a guide groove is provided between the plurality of rubber protrusions, and the groove bottom of the guide groove is configured as an arc structure, and a positioning groove of an annular structure is provided at the bottom end of the inner side wall of the insertion end, the cross-section of the positioning groove is configured as an arc structure, and the positioning groove is adapted to the rubber protrusion;

[0009] A trumpet-shaped through groove is provided inside the expansion rubber plug, and the top of the through groove is connected to the bottom end of the inner tube. A plurality of support blocks are fixedly provided at the bottom end of the interior of the expansion rubber plug. The plurality of support blocks are distributed in a circular array, and the cross-sections of the plurality of support blocks are all set to a trapezoidal structure. A deformation groove is provided between two adjacent support blocks, the cross-section of the deformation groove is set to a trapezoidal structure, and the inner wall of the deformation groove is set to an arc structure flush with the through groove.

[0010] Preferably, the bottom end of the outer side wall of the insertion end is provided with a curved surface, and the insertion end is made of hard rubber.

[0011] Preferably, an insertion sleeve is fixedly provided at one end of the gastric lavage tube away from the insertion end, and the insertion sleeve is configured as an inclined structure.

[0012] Preferably, the end of the inner tube away from the expansion rubber plug is slidably arranged inside the insertion sleeve, and the outer wall of the inner tube is tightly fitted with the inner wall of the insertion sleeve.

[0013] Preferably, a limiting block with an annular structure is fixedly provided on the outer side of one end of the inner tube away from the expansion rubber plug, and the limiting block is provided on the outer side of the insertion sleeve.

[0014] Preferably, the gastric lavage tube is a flexible rubber tube, and a connecting rubber sleeve is fixedly provided at one end of the gastric lavage tube away from the insertion end.

[0015] Preferably, the inner tube is a flexible rubber tube, and a connecting nozzle is fixedly provided at one end of the inner tube away from the expansion rubber plug.

[0016] Technical effects and advantages of this utility model:

[0017] 1. The utility model is provided with a gastric lavage tube, an inner tube, an insertion end and an expandable rubber plug. When sampling the patient's stomach, the gastric lavage tube is inserted into the patient's stomach through the insertion end. During this process, the expandable rubber plug is located inside the insertion end and contracts to block the insertion end, so as to avoid the insertion end from rubbing against the patient's esophagus during the insertion process, causing discomfort to the patient. After the insertion end is inserted into the patient's stomach, the lavage fluid is pressurized and injected through the gastric lavage tube. At this time, the expandable rubber plug is pushed outward under the pressure of the lavage fluid and guides the lavage fluid through the guide groove on its outer side, so that the lavage fluid flows into the patient's stomach after being buffered, thereby avoiding discomfort to the patient caused by the injection of the lavage fluid and facilitating the sampling work.

[0018] 2. The utility model sets a gastric lavage tube and an inner tube. The inner tube follows the gastric lavage tube and is inserted into the patient's stomach. After the lavage fluid is injected into the patient's stomach, the expandable rubber plug at one end of the inner tube extends out of the insertion end and opens naturally. At this time, the channel inside the expandable rubber plug opens, and the lavage fluid in the patient's stomach can be directly discharged through the expandable rubber plug and the inner tube. The lavage fluid with the patient's sample is discharged through the inner tube, which can prevent it from mixing with the lavage fluid in the gastric lavage tube and affecting the sampling accuracy, thereby ensuring the sampling accuracy of the device for subsequent diagnosis of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model.

[0021] Figure 3 For the utility model Figure 2 A magnified schematic diagram of the structure in the middle.

[0022] Figure 4 This is a schematic diagram of the structure of the expansion rubber plug of the utility model.

[0023] Figure 5 This is a schematic cross-sectional view of the expansion rubber plug structure of the present invention.

[0024] In the figure: 1. Gastric lavage tube; 2. Inner tube; 3. Insertion end; 4. Expandable rubber plug; 5. Rubber bump; 6. Guide groove; 7. Positioning groove; 8. Support block; 9. Deformation groove; 10. Arc surface; 11. Insertion sleeve; 12. Limit block; 13. Connecting rubber sleeve; 14. Connecting mouth. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] The utility model provides Figure 1-5 The device for collecting samples for early gastric cancer shown in the figure comprises a gastric lavage tube 1 and an inner tube 2. The inner tube 2 is disposed inside the gastric lavage tube 1. An insertion end 3 is fixedly disposed at one end of the gastric lavage tube 1. An expandable rubber plug 4 is fixedly disposed at one end of the inner tube 2. The expandable rubber plug 4 is slidably disposed inside the insertion end 3.

[0027] The expansion rubber plug 4 is configured as a conical structure. A plurality of rubber protrusions 5 are fixedly provided on the top of the outer wall of the expansion rubber plug 4. The plurality of rubber protrusions 5 are arranged in a circumferential manner. A guide groove 6 is provided between the plurality of rubber protrusions 5. The bottom of the guide groove 6 is configured as an arc-shaped structure. A positioning groove 7 of an annular structure is provided at the bottom end of the inner wall of the insertion end 3. The cross-section of the positioning groove 7 is configured as an arc-shaped structure. The positioning groove 7 is adapted to the rubber protrusion 5. The positioning groove 7 cooperates with the rubber protrusion 5 to confine the expansion rubber plug 4 to the interior of the insertion end 3.

[0028] A trumpet-shaped through groove is provided inside the expansion rubber plug 4, and the top of the through groove is connected to the bottom end of the inner tube 2. A plurality of support blocks 8 are fixed to the bottom end of the expansion rubber plug 4. The plurality of support blocks 8 are distributed in a ring array, and the cross-sections of the plurality of support blocks 8 are all set to a trapezoidal structure. A deformation groove 9 is provided between two adjacent support blocks 8. The cross-section of the deformation groove 9 is set to a trapezoidal structure, and the inner wall of the deformation groove 9 is set to an arc structure flush with the through groove. The design of the arc structure can better guide the irrigation fluid into the expansion rubber plug 4.

[0029] The bottom end of the outer wall of the insertion end 3 is provided with a curved surface 10. The insertion end 3 is made of hard rubber. The end of the gastric lavage tube 1 away from the insertion end 3 is fixedly provided with an insertion sleeve 11, and the insertion sleeve 11 is configured as an inclined structure. The end of the inner tube 2 away from the expansion rubber plug 4 is slidably provided inside the insertion sleeve 11, and the outer wall of the inner tube 2 is tightly fitted with the inner wall of the insertion sleeve 11.

[0030] An annular stopper 12 is fixedly provided on the outer side of one end of the inner tube 2 away from the expandable rubber plug 4. The stopper 12 is arranged on the outer side of the insertion sleeve 11. The stopper 12 is used to limit the range of movement of the inner tube 2 to prevent the expandable rubber plug 4 from falling off in the patient's stomach and causing medical accidents.

[0031] The gastric lavage tube 1 is a flexible rubber tube. A connecting rubber sleeve 13 is fixedly provided at the end of the gastric lavage tube 1 away from the insertion end 3. The inner tube 2 is a flexible rubber tube. A connecting nozzle 14 is fixedly provided at the end of the inner tube 2 away from the expansion rubber plug 4. The connecting rubber sleeve 13 and the connecting nozzle 14 are used to realize the connection between the gastric lavage tube 1, the inner tube 2 and the gastric lavage machine.

[0032] Working principle of this utility model:

[0033] When the device is in use, in the initial state, the expandable rubber plug 4 is located inside the insertion end 3, and the expandable rubber plug 4 is in a contracted state. In this state, the inside of the expandable rubber plug 4 is gathered along the deformation groove 9 and blocks the bottom end of the insertion end 3. The rubber protrusion 5 on the outside of the expandable rubber plug 4 is located in the positioning groove 7 inside the insertion end 3. In this state, the gastric lavage tube 1 and the inner tube 2 can be inserted into the patient's stomach. Before insertion, lubricating oil is applied to the surface of the insertion end 3 and the gastric lavage tube 1, and then the insertion end 3 is inserted into the patient's throat. While the patient is swallowing, the insertion end 3 and the gastric lavage tube 1 are inserted into the patient's esophagus and pushed into the patient's stomach. During this process, the bottom end of the insertion end 3 is blocked by the expandable rubber plug 4, which can prevent the insertion end 3 from rubbing against the protrusion inside the patient's esophagus, causing damage to the patient's esophagus and discomfort. After the insertion end 3 is inserted into the patient's stomach, the patient's stomach can be irrigated to obtain a sample from the patient's stomach.

[0034] At this time, connect the connecting rubber sleeve 13 at one end of the gastric lavage tube 1 to the lavage fluid injection port of the gastric lavage machine, connect the connecting nozzle 14 at one end of the inner tube 2 to the discharge port of the gastric lavage machine, and then start the gastric lavage machine to inject the lavage fluid into the gastric lavage tube 1. The lavage fluid enters the gastric lavage tube 1 after being pressurized, and pushes the expansion rubber plug 4 outward under the action of pressure, so that the expansion rubber plug 4 moves to the bottom of the insertion end 3. At this time, the expansion rubber plug 4 recovers its deformation under the action of its own elastic potential energy. At this time, the lavage fluid in the gastric lavage tube 1 flows outward along the outer wall of the expansion rubber plug 4 and is guided by the guide groove 6. Due to the groove bottom of the guide groove 6 The arc-shaped structure allows the pressurized lavage fluid to change direction under the guidance of the arc-shaped guide groove 6, and reduce its pressure and flow rate, so that the lavage fluid can be slowly injected into the patient's stomach to avoid the lavage fluid from impacting the patient's stomach and causing discomfort to the patient. After the lavage fluid is injected, the lavage fluid is mixed with the cells shed from the patient's stomach. At this time, the injection of lavage fluid is stopped, and the discharge function of the gastric lavage machine is started. At this time, the lavage fluid in the patient's stomach enters the inner tube 2 through the groove inside the expansion rubber stopper 4, and is then extracted through the inner tube 2. The extracted lavage fluid is collected to complete the sampling work of the patient's stomach.

[0035] It should be noted that this embodiment only provides the gastric lavage tube 1 and other structures required for the patient's gastric sampling process. For the gastric lavage machine and other structures required for sampling, existing technologies can be used. In addition, a syringe can be used instead of the gastric lavage machine for auxiliary gastric lavage sampling. The above methods are conventional methods in the field and will not be described in detail here.

[0036] It should be further explained that the gastric lavage tube 1 and the insertion end 3 in this embodiment are connected by welding, the inner tube 2 and the gastric lavage tube 1 can be produced and assembled separately, and the expansion rubber plug 4 is produced by injection molding and welded to the inner tube 2. The above production methods all adopt existing technologies and will not be elaborated here.

[0037] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0038] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0039] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gastric cancer early stage sample collection device, comprising a gastric lavage tube (1) and an inner tube (2), characterized in that: The inner tube (2) is arranged inside the gastric lavage tube (1), one end of the gastric lavage tube (1) is fixedly provided with an insertion end (3), one end of the inner tube (2) is fixedly provided with an expansion rubber plug (4), and the expansion rubber plug (4) is slidably arranged inside the insertion end (3); The expansion rubber plug (4) is configured as a conical structure, a plurality of rubber protrusions (5) are fixedly provided on the top of the outer wall of the expansion rubber plug (4), and the plurality of rubber protrusions (5) are arranged in a circumferential manner, a guide groove (6) is provided between the plurality of rubber protrusions (5), and the groove bottom of the guide groove (6) is configured as an arc structure, a positioning groove (7) of an annular structure is provided at the bottom end of the inner wall of the insertion end (3), the cross section of the positioning groove (7) is configured as an arc structure, and the positioning groove (7) is adapted to the rubber protrusion (5); A trumpet-shaped through groove is provided inside the expansion rubber plug (4), and the top end of the through groove is connected to the bottom end of the inner tube (2). A plurality of support blocks (8) are fixedly provided at the bottom end of the expansion rubber plug (4), and the plurality of support blocks (8) are distributed in a ring array, and the cross-sections of the plurality of support blocks (8) are all set to a trapezoidal structure. A deformation groove (9) is provided between two adjacent support blocks (8), and the cross-section of the deformation groove (9) is set to a trapezoidal structure, and the inner wall of the deformation groove (9) is set to an arc structure flush with the through groove.

2. The device for collecting samples for early gastric cancer according to claim 1, characterized in that: The bottom end of the outer wall of the insertion end (3) is provided with a curved surface (10), and the insertion end (3) is made of hard rubber.

3. The gastric cancer early stage sample collection device according to claim 1, characterized in that: An insertion sleeve (11) is fixedly provided on one end of the gastric lavage tube (1) away from the insertion end (3), and the insertion sleeve (11) is configured as an inclined structure.

4. The device for collecting samples for early gastric cancer according to claim 3, characterized in that: One end of the inner tube (2) away from the expansion rubber plug (4) is slidably arranged inside the insertion sleeve (11), and the outer wall of the inner tube (2) is tightly fitted with the inner wall of the insertion sleeve (11).

5. The device for collecting gastric cancer samples in the early stage according to claim 4, characterized in that: A limiting block (12) with an annular structure is fixedly provided on the outer side of one end of the inner tube (2) away from the expansion rubber plug (4), and the limiting block (12) is arranged on the outer side of the insertion sleeve (11).

6. The device for collecting gastric cancer samples in the early stage according to claim 1, characterized in that: The gastric lavage tube (1) is a flexible rubber tube, and a connecting rubber sleeve (13) is fixedly provided on one end of the gastric lavage tube (1) away from the insertion end (3).

7. The device for collecting gastric cancer samples in the early stage according to claim 1, characterized in that: The inner tube (2) is a flexible rubber tube, and a connection nozzle (14) is fixedly provided at one end of the inner tube (2) away from the expansion rubber plug (4).

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