Stomach residue sampler

Abstract

The utility model provides a stomach residue sampler which comprises a sampling tube and is characterized in that a sampling mechanism is movably arranged in the sampling tube and is connected with a driving component, an air bag is sleeved on the sampling tube, and the air bag is connected with external air supply equipment through a hose. The driving assembly drives the sampling mechanism to stretch out of the sampling tube to sample residues in the stomach, after sampling is completed, the driving assembly drives the sampling mechanism to retract into the sampling tube, so that it is ensured that a sample cannot be polluted, after the sampling tube is inserted into the digestive tract, the sampling tube can be fixed in the digestive tract through the expansion air bag, reflux of gastric contents is effectively prevented, and the sampling efficiency is improved. And the esophagus of a sampled person is prevented from being burnt or the sampling work is prevented from being interfered.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of samplers, in particular to a kind of gastric residual material sampler, belong to medical instrument design and manufacturing technical field. BACKGROUND

[0002] Gastric residual material sampler is a kind of commonly used medical instrument, for collecting residual food or other substances from the stomach of animal or human as detection sample, so as to diagnose digestive system disease, assess gastric emptying speed or carry out poison analysis etc..Through this sampler, doctor can obtain the information of gastric material, help to carry out more accurate diagnosis and treatment.The existing sampler is usually soft catheter, needle tube is connected to its inner end for gastric juice suction, and pump type device such as hand or electric pump is connected to its outer end, to control gastric juice suction.China patent CN208096771U discloses a kind of "endoscopic gastric juice sampler", including gastric juice sampling bottle, gastric juice suction tube and suction pump, the gastric juice sampling bottle is provided with sample inlet, double-port needle is inserted on the sample inlet, the double-port needle is connected with gastric juice suction tube and suction pump, the gastric juice suction tube is provided with tee pipe, its operation saves time and effort, can quantitatively extract gastric juice, gastric juice with high viscosity can also be extracted, sample is not easy to be contaminated after gastric juice extraction.

[0003] In use, it is found that the above device has the following problems: although a sampler is provided by gastric juice sampling bottle, gastric juice suction tube and suction pump, it is difficult to sample solid gastric residual material, and cannot meet the detection needs of solid gastric residual material.Therefore, it is necessary to improve the prior art. SUMMARY

[0004] To solve the problems of inconvenient operation, difficulty in extracting solid residual material and easy to cause gastric content reflux of the existing gastric residual material extractor, the utility model provides a kind of gastric residual material sampler.

[0005] The utility model discloses a kind of gastric residual material samplers, including sampling tube, its characterized in that sampling mechanism is movably arranged in sampling tube, the sampling mechanism is connected with drive assembly, gasbag is set on sampling tube, the gasbag is connected with external gas supply equipment by hose, so that after sampling tube is inserted into digestive tract, by inflating the gasbag and making it swell, sampling tube can be fixed in digestive tract, effectively prevent gastric content reflux, avoid burning to the esophagus of the person being sampled or cause interference to sampling work, then drive assembly drives sampling mechanism to extend outside sampling tube and open, to sample solid residual material in stomach, after sampling, drive assembly drives sampling mechanism to close and retract into sampling tube, to ensure that sample cannot be contaminated, then deflate the gasbag and make it retract, sampling tube can be smoothly inserted, gastric residual material sampling is completed.

[0006] The sampling tube is designed as a circular tube with open front and rear ends, the length and diameter of the circular tube are set according to requirements, the sampling mechanism is slidably sleeved at the front part of the sampling tube, the driving assembly is arranged at the rear part of the sampling tube, and the rear end of the sampling tube is connected with the hose through the connecting sleeve, so that the sampling tube is sent into the stomach of the patient through the digestive tract to sample the residual material.

[0007] The connecting sleeve is composed of a front cylindrical segment and a rear conical segment, the front cylindrical segment is sleeved with the sampling tube, the rear conical segment is gradually reduced in diameter and connected with the hose, and an air cavity is formed in the rear conical segment, so that the sampling tube and the hose are connected through the connecting sleeve, and the outer end of the hose is connected with the external air supply device.

[0008] The air bag is designed as an annular air bag, which is arranged at the rear part of the sampling tube and sleeved on the front cylindrical segment of the connecting sleeve, the front cylindrical segment is provided with an air slit connected with the inner side of the air bag, an air channel connected with the air slit is arranged between the sampling tube and the front cylindrical segment, and the air channel is communicated with the air cavity in the rear conical segment of the connecting sleeve, so that when the external air supply device supplies air to the hose, the air enters the air cavity, and then enters the air bag through the air channel and the air slit, so that the air bag is inflated, and vice versa, when the hose is deflated, the air in the air bag is discharged through the air slit, the air channel, the air cavity and the hose, so that the air bag is deflated.

[0009] The sampling mechanism comprises a sampling ball with a cavity formed therein and composed of two identical half-bowl segments, a connecting block arranged at the rear of the sampling ball, and a hinge shaft arranged at each end of the connecting block, each hinge shaft is connected with the corresponding half-bowl segment through a connecting plate, an intermediate partition plate is arranged between the two connecting plates on the inner side of the connecting block, springs are arranged between the two connecting plates and the intermediate partition plate, and the sampling ball is arranged in the sampling tube and has an outer diameter matched with the inner diameter of the sampling tube.

[0010] The driving assembly comprises a piston sleeved in the rear part of the sampling tube, a connecting rod arranged between the lower side of the piston and the connecting block of the sampling mechanism, and an air cavity in the rear conical segment of the connecting sleeve communicated with the upper side of the piston, so that when the external air supply device supplies air to the hose, the air enters the air cavity, and then pushes the piston, the connecting rod, the connecting block and the sampling ball to move forward until the sampling ball extends out of the sampling tube and the two half-bowl segments are opened to the two sides under the pushing force of the springs, and when the external air supply device sucks air from the hose, the piston, the connecting rod, the connecting block and the sampling ball move backward, the two half-bowl segments are compressed to form a ball while clamping the stomach contents under the limitation of the sampling tube opening, so that the sampling of the residual material in the stomach is completed.

[0011] The utility model has the following advantages and effects:

[0012] (1) through the drive assembly driven sampling mechanism to extend the sampling tube on the gastric residual sampling, complete sampling drive assembly driven sampling mechanism to retract into the sampling tube, so as to ensure that the sample is safely clamped and smoothly taken out, improve the efficiency and accuracy of sampling, not only suitable for chyme or liquid residue, but also can good clamping solid residue;

[0013] (2) through the annular air bag inflation makes the sampling tube and the position of the digestive tract can be fixed, so as to effectively prevent the reflux of gastric contents, avoid the burning of the patient's esophagus or the interference of the sampling work, improve the practicability and the convenience of operation of the sampler. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below, and obviously, for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0015] Figure 1 is the structural diagram of the present application;

[0016] Figure 2 is the sectional view of the present application;

[0017] Figure 3 is the sampling mechanism structure diagram of the present application;

[0018] Figure 4 is the opening state diagram of Figure 3 . DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. EMBODIMENT

[0020] The gastric residue sampler provided by the present invention includes a sampling tube 2, a sampling mechanism 7 movably provided in the sampling tube 2, the sampling mechanism 7 is connected to a driving assembly 9, an air bag 3 is sleeved on the sampling tube 2, and the air bag 3 is connected to an external air supply device through a hose, so that after the sampling tube 2 is inserted into the digestive tract, the sampling tube 2 can be fixed in the digestive tract by inflating the air bag 3, effectively preventing the reflux of gastric contents, avoiding burning the esophagus of the sampled person or causing interference with the sampling work, and then the sampling mechanism 7 is driven by the driving assembly 9 to extend out of the sampling tube 2 and open to sample solid residues in the stomach. After the sampling is completed, the sampling mechanism 7 is driven by the driving assembly 9 to close and retract into the sampling tube 2 to ensure that the sample will not be contaminated. After that, the air bag 3 is deflated and retracted, and the sampling tube 2 can be smoothly inserted to complete the gastric residue sampling;

[0021] The sampling tube 2 is a circular tube with open front and rear ends. Its length and diameter are set as needed. The sampling mechanism 7 is slidably sleeved on the front portion of the sampling tube 2. The drive assembly 9 is located on the rear portion of the sampling tube 2. The rear end of the sampling tube 2 is connected to a flexible tube via a connecting sleeve 4 so that the sampling tube 2 can be sent through the digestive tract into the patient's stomach to sample residue.

[0022] The connecting sleeve 4 is composed of a front cylindrical section and a rear conical section. The front cylindrical section is connected to the sampling tube 2. The diameter of the rear conical section gradually decreases and is connected to the hose 42. An air cavity 41 is formed in the rear conical section. The sampling tube 2 and the hose 42 are connected through the connecting sleeve 4. The outer end of the hose 42 is connected to the external air supply equipment.

[0023] The airbag 3 is configured as an annular airbag, which is located at the rear of the sampling tube 2 and is sleeved on the front cylindrical section of the connecting sleeve 4. The front cylindrical section is provided with an air slit 12 connected to the inner side of the airbag 3. An air channel 11 connected to the air slit 12 is provided between the sampling tube 2 and the front cylindrical section of the connecting sleeve 4. The air channel 11 is connected to the air cavity 41 in the rear conical section of the connecting sleeve 4. When air is supplied to the hose 42 through an external air supply device, the gas enters the air cavity 41 and then enters the airbag 3 through the air channel 11 and the air slit 12, thereby expanding the airbag 3. Conversely, when the hose 42 is deflated, the gas in the airbag 3 is discharged through the air slit 12, the air channel 11, the air cavity 41, and the hose 42, thereby shrinking the airbag 3.

[0024] The sampling mechanism 7 includes a sampling ball 1 composed of two identical hemispherical bowls 5 with a cavity 6 therein, and a connecting block 15 located behind the sampling ball 1. The connecting block 15 has hinges 14 at both ends, each hinge 14 being connected to the corresponding hemispherical bowl 5 via a connecting plate 13. An intermediate partition 16 is provided on the inside of the connecting block 15, located between the two connecting plates 13. Springs 17 are provided between the two connecting plates 13 and the intermediate partition 16. The sampling ball 1 is placed inside the front end of the sampling tube 2, and its outer diameter is adapted to the inner diameter of the sampling tube 2.

[0025] The driving assembly 9 comprises a piston 10 arranged in the rear part of the sampling tube 2, a connecting rod 8 arranged between the lower side of the piston 10 and the connecting block 15 of the sampling mechanism 7, and a gas cavity 41 arranged in the rear conical section of the connecting sleeve 4, so that when the external gas supply device supplies gas to the hose 42, the gas enters the gas cavity 41, and then pushes the piston 10, the connecting rod 8, the connecting block 15, the sampling ball 1 to move forward until the sampling ball 1 extends out of the sampling tube 2, and the two half-ball bowls 5 are opened to the two sides under the pushing force of the spring 17, when the external gas supply device sucks the gas from the hose 42, the piston 10, the connecting rod 8, the connecting block 15, and the sampling ball 1 move backward, and the two half-ball bowls 5 are compressed to form a ball while clamping the gastric contents under the restriction of the opening of the sampling tube 2, so as to complete the sampling of the gastric residual.

[0026] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0027] The basic principles, main features and advantages of the present application have been shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A gastric residue sampler, comprising a sampling tube, characterized in that A sampling mechanism is provided in the sampling tube, which is connected to the driving assembly. The sampling tube is provided as a round tube with open front and rear ends. The length and diameter of the round tube are set as needed. The sampling mechanism is slidingly sleeved in the front part of the sampling tube, the driving assembly is provided in the rear part of the sampling tube, and the rear end of the sampling tube is connected to the hose through a connecting sleeve. The sampling mechanism includes a sampling ball composed of two identical hemispherical bowls with a cavity therein, and a connecting block provided behind the sampling ball. The two ends of the connecting block are respectively provided with hinge shafts, and each hinge shaft is connected by a connecting sleeve. The connecting plate is connected to the hemispherical bowl on the corresponding side. An intermediate partition located between the two connecting plates is provided on the inner side of the connecting block. Springs are respectively provided between the two connecting plates and the intermediate partition. The sampling ball is placed in the sampling tube, and its outer diameter is adapted to the inner diameter of the sampling tube. The driving assembly includes a piston sleeved at the rear part of the sampling tube. A connecting rod is provided between the lower side of the piston and the connecting block of the sampling mechanism. The upper side of the piston is connected to the air cavity in the conical section at the rear of the connecting sleeve. An air bag is sleeved on the sampling tube, and the air bag is connected to the external air supply equipment through a hose.

2. The gastric residue sampler according to claim 1, characterized in that The connecting sleeve is composed of a front cylindrical section and a rear conical section, wherein the front cylindrical section is sleeved with the sampling tube, and the rear conical section is connected to the hose after its diameter is gradually reduced, and an air cavity is formed in the rear conical section.

3. The gastric residue sampler according to claim 1, characterized in that The airbag is configured as an annular airbag, which is located at the rear of the sampling tube and is sleeved on the front cylindrical section of the connecting sleeve. The front cylindrical section is provided with an air gap connected to the inner side of the airbag, and an airway connected to the air gap is provided between the sampling tube and the front cylindrical section, and the airway is connected to the air cavity in the rear conical section of the connecting sleeve.

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