A lymph node retrieval device for pathological examination

Abstract

The present invention belongs to the technical field of pathological testing equipment, and specifically relates to a lymph node retrieval device for pathological testing, which solves the problem that the process of finding lymph nodes in tumor specimens of pathology department is lack of efficient tools and only by manual touch, which is not only time-consuming but also easy to cause inaccurate final results due to subjective factors. The present invention comprises a base and a support rod, a motor is arranged inside the support rod, a cylindrical outer cylinder is fixed on the top of the support rod, a filter barrel arranged concentrically therewith is sleeved inside the outer cylinder, a circular mounting plate is arranged at the bottom of the filter barrel, a pulsator rib is arranged on the upper part of the mounting plate, the motor can drive the filter barrel to rotate, and a plurality of groups of through holes and intercepting thorns are evenly arranged on the cylinder wall of the filter barrel. The present invention has a relatively high degree of automation, reduces the difficulty of completely finding lymph nodes in the current pathological testing process, and eliminates the possibility of differences in test results due to subjective factors of pathologists.

Description

Technical Field

[0001] The invention belongs to the technical field of pathological testing equipment, and in particular relates to a lymph node retrieval device for pathological testing. Background Art

[0002] Lymph nodes are important immune organs in the human body. A normal person has about 500 to 600 lymph nodes. Lymph nodes can be divided into superficial lymph nodes and deep lymph nodes according to their location. They are peripheral lymphoid organs located at the confluence of lymphatic vessels. They are the places where lymphocytes settle and adaptive immune responses are produced. Normal superficial lymph nodes are very small, with a diameter of less than 0.5 cm. The surface is smooth, soft and elastic, and there is no adhesion to the surrounding tissues, nor tenderness. When bacteria enter the body from the injured area, lymphocytes will produce lymphokines and antibodies to effectively kill bacteria. As a result, lymphocytes and tissue cells in the lymph nodes will reactively proliferate, causing lymph nodes to swell, which is called reactive lymph node hyperplasia. Other factors that can cause reactive lymph node hyperplasia include viruses, certain chemical drugs, toxic products of metabolism, degenerated tissue components and foreign bodies. When a tumor appears in the human body, the sampled lymph nodes need to be pathologically tested.

[0003] The sampling of tumor specimens in the pathology department is the focus and difficulty of pathology work, especially the search for lymph nodes in adipose tissue. The number of lymph nodes found directly affects the patient's tumor stage, thereby affecting the patient's treatment. Therefore, no matter what kind of malignant tumor, as long as there is lymph node dissection, enough lymph nodes must be found, and the patient's treatment is meaningful. At present, there is no good way to obtain specimens and find lymph nodes in the pathology department. The only way is to cut the adipose tissue one by one with a knife, and then touch it with your hands to find lymph nodes in the chopped adipose tissue. There is a lot of randomness and human factors, especially when the diameter of the lymph node is less than 0.5cm, usually you can only try your best to find it. If you want to find enough lymph nodes, you can't find them without 3 to 5 hours, and you often need to change people to keep looking, but even so, you will always miss them, and you can't spend so much time looking at work, because there are a lot of specimens every day, and pathologists are in an extremely scarce state all over the world. How to efficiently find all the lymph nodes contained in the specimen is extremely important. Summary of the invention

[0004] In order to solve the problem that there is a lack of efficient tools in the process of finding lymph nodes in tumor specimens in the pathology department, and the method of manual touch is only used, which is not only time-consuming but also easily leads to inaccurate final results due to subjective factors, the present invention provides a lymph node finding device for pathological testing.

[0005] The present invention is realized by the following technical scheme: a lymph node retrieval device for pathological testing, comprising a base, the base is circular and a vertically arranged support rod is fixed at the center of the base, the support rod is a hollow structure, a counterweight is arranged inside the support rod near the base, a motor is arranged on the top of the counterweight, the motor output shaft of the motor is arranged vertically upward and an external gear is connected to the end, a cylindrical outer cylinder is fixed on the top of the support rod, a top cover is arranged on the top of the outer cylinder, a through hole connected to the support rod is opened at the center of the outer cylinder, and a concentrically arranged outer cylinder is arranged inside the outer cylinder. A filter barrel, a circular mounting plate is provided at the bottom of the filter barrel, a pulse wheel rib is provided on the upper part of the mounting plate, a connecting shaft pointing vertically downward is fixed at the bottom center of the mounting plate, an internal gear is fixed at the bottom of the connecting shaft, the internal gear can mesh with the external gear, a plurality of groups of through holes and intercepting thorns are evenly distributed on the barrel wall of the filter barrel, the through holes are circular and include a variety of diameter specifications, and through holes of different specifications are arranged from bottom to top along the height direction of the filter barrel in order from small to large in diameter, the intercepting thorns are in an inwardly arranged L-shaped structure, and the intercepting thorns are respectively arranged on the inner wall of the filter barrel between the through holes.

[0006] An iron core with an energized solenoid is arranged inside the outer gear. The iron core is horseshoe-shaped. The winding directions of the energized solenoids on both sides of the iron core are opposite. When powered, the energized solenoids can work together with the iron core to make the outer gear generate magnetism. The on and off of the energized solenoids are controlled by a magnetic switch, and the magnetic switch is arranged on the base.

[0007] The through holes include three specifications, namely 0.2 cm in diameter, 0.5 cm in diameter and 0.7 cm in diameter. The filter barrel is divided into three areas according to the height, and the diameters of the through holes in the three areas from bottom to top are 0.2 cm, 0.5 cm and 0.7 cm respectively. The reason why the through hole diameter of the filter barrel is set in this way is that the detached fat tissue is light in weight, and under the action of centrifugal force, its range of movement is basically below the middle of the filter barrel. The through holes with smaller diameters are set at the bottom of the filter barrel to prevent the detached fat tissue from being discharged through the relatively larger diameter through holes.

[0008] The shape of the impeller ribs is any one of an elliptical shape, a shuttle shape or a willow leaf shape. There are three impeller ribs in total and they are arranged protruding from the surface of the mounting plate. The angle between adjacent impeller ribs is 120°.

[0009] The outer diameter of the internal gear is smaller than the diameter of the through hole and the inner diameter of the support rod.

[0010] The intercepting thorn is made of stainless steel and the end of the intercepting thorn facing the axis of the filter barrel is in a smooth spherical shape.

[0011] The electric motor is connected with a motor switch through a line, and the motor switch is arranged on the base.

[0012] The top cover is circular and a grip is arranged in the middle of the top cover.

[0013] Compared with the prior art, the present invention has the following specific technical features and beneficial effects:

[0014] The structure of the present invention is reasonable. Through the cooperation of the outer cylinder and the filter barrel, the layer-by-layer disturbance and peeling of the fat tissue by the interception thorn is realized under the action of centrifugal force. The lymph nodes themselves are smooth, soft, elastic and non-adhesive to the surrounding tissues, and the centrifugal forces borne by the different masses of lymph nodes of different diameters are different, which leads to different bounce heights in the filter barrel after collision, and finally realizes the discharge of lymph nodes through different apertures of the filter barrel, which is convenient for medical staff to complete the centralized search of lymph nodes in the outer cylinder. The present invention has a relatively high degree of automation, which ends the difficulty of completely finding lymph nodes in the current pathological test process, and at the same time eliminates the possibility of differences in test results due to subjective factors of pathologists. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 for Figure 1 A schematic diagram of the structure of the middle base portion;

[0017] Figure 3 for Figure 1 Schematic diagram of the structure of the inner and outer cylinders and the support rods;

[0018] Figure 4 for Figure 1 Schematic diagram of the structure of the filter barrel;

[0019] Figure 5 for Figure 4 The structural diagram of the middle mounting plate part;

[0020] Figure 6 for Figure 5 Schematic diagram of the structure of the internal gear;

[0021] Figure 7 for Figure 2 Schematic diagram of the structure of the middle and outer gears;

[0022] Figure 8 for Figure 1 Schematic diagram of the structure of the middle top cover.

[0023] In the figure: 1-base, 2-support rod, 3-motor, 4-counterweight, 5-outer cylinder, 6-filter barrel, 7-top cover, 8-pulsator ribs, 9-through hole, 10-intercepting thorns, 11-mounting plate, 12-connecting shaft, 13-inner gear, 14-motor output shaft, 15-motor switch, 16-outer gear, 17-through hole, 18-gripper, 19-magnetic switch, 20-iron core, 21-energized solenoid. DETAILED DESCRIPTION

[0024] Reference Figures 1 to 8 The present invention is further elaborated. A lymph node retrieval device for pathological testing includes a base 1. The base 1 is circular and a vertically arranged support rod 2 is fixed at the center of the base 1. The support rod 2 is a hollow structure. A counterweight 4 is arranged inside the support rod 2 near the base 1. A motor 3 is arranged on the top of the counterweight 4. The motor output shaft 14 of the motor 3 is arranged vertically upward and an external gear 16 is connected to the end. A cylindrical outer cylinder 5 is fixed on the top of the support rod 2. A top cover 7 is arranged on the top of the outer cylinder 5. A through hole 17 connected to the support rod 2 is opened at the center of the outer cylinder 5. A filter barrel 6 arranged concentrically with the outer cylinder 5 is sleeved inside the outer cylinder 5. A circular mounting plate 11 is provided at the bottom of the filter barrel 6, and a pulsator rib 8 is provided on the upper part of the mounting plate 11. A vertical downward connecting shaft 12 is fixed at the center of the bottom circle of the mounting plate 11, and an internal gear 13 is fixed at the bottom of the connecting shaft 12. The internal gear 13 can mesh with the external gear 16. A plurality of groups of through holes 9 and intercepting spikes 10 are evenly arranged on the cylinder wall of the filter barrel 6. The through holes 9 are circular and include a variety of diameter specifications. Through holes 9 of different specifications are arranged from bottom to top along the height direction of the filter barrel 6 in the order of diameter from small to large. The intercepting spikes 10 are in an inwardly arranged L-shaped structure, and the intercepting spikes 10 are respectively arranged on the inner wall of the filter barrel 6 between the through holes 9. The intercepting spikes 10 are stainless steel structures with a diameter of 0.1 to 0.2 cm and a length of 0.5 to 1.0 cm, wherein the ends are smoothed and spherical so that the lymph nodes are damaged by the ends of the intercepting spikes 10 during operation.

[0025] An iron core 20 with an energized solenoid 21 is arranged inside the outer gear 16. The iron core 20 is horseshoe-shaped. The winding directions of the energized solenoids 21 on both sides of the iron core 20 are opposite. The energized solenoids 21 can work together with the iron core 20 to make the outer gear 16 generate magnetism when powered. The on and off of the energized solenoid 21 is controlled by a magnetic switch 19, and the magnetic switch 19 is arranged on the base 1.

[0026] The shape of the impeller ribs 8 is any one of an elliptical shape, a shuttle shape or a willow leaf shape. There are three impeller ribs 8 and they are arranged on the surface of the mounting plate 11. The angle between adjacent impeller ribs 8 is 120°. The intercepting thorns 10 are made of stainless steel and the end of the intercepting thorns 10 facing the axis of the filter barrel 6 is in a smooth spherical shape. The motor 3 is connected to a motor switch 15 through a line, and the motor switch 15 is arranged on the base 1.

[0027] The process of finding lymph nodes when performing pathological examination using the present invention is as follows:

[0028] First, the device of the present invention is assembled. Specifically, the filter barrel 6 is directly inserted into the outer cylinder 5, so that the inner gear 13 is meshed with the outer gear 16; the magnetic switch 19 is pressed, and the iron core 20 with the energized solenoid 21 works to make the outer gear 16 generate electromagnetic force, and finally the outer gear 16 and the inner gear 13 form a whole.

[0029] Secondly, the fat tissue with lymph nodes for pathological examination is made into a specified specimen and then kneaded and touched by hand. Those with larger diameters can be located by touch and directly removed. Under normal circumstances, lymph nodes with a diameter greater than 0.7cm are easier to identify, while those with a diameter less than 0.5cm are more difficult to identify.

[0030] Further, the remaining fat tissue is placed in the filter barrel 6, and the top cover 7 is closed; the motor switch 15 is turned on, the motor 3 starts to work, the motor output shaft 14 drives the outer gear 16 to rotate, the outer gear 16 engages the inner gear 13, and the inner gear drives the filter barrel 6 to rotate through the connecting shaft 12; as the speed of the motor 3 increases, the fat tissue is driven by the impeller ribs 8 to rotate rapidly in the filter barrel 6 to achieve centrifugal motion, and in this process, it constantly touches and rubs against the inner wall of the filter barrel 6, and the interception thorns 10 set on the inner wall of the filter barrel 6 contact the fat and scrape and peel it off, and the layers of peeled fat tissue are constantly hanging on the interception thorns 10, and at the same time, the lymph nodes that lack fat support fall into the filter barrel 6 and perform centrifugal motion. Due to the difference in the size of lymph nodes, the lymph nodes with larger diameters have larger masses and are subjected to greater centrifugal forces during rotation, and vice versa. The lymph nodes with larger diameters have higher bounce heights when collisions occur due to greater forces.

[0031] Furthermore, the peeled lymph nodes continuously collide with the inner wall of the filter barrel 6, the intercepting thorns 10, the mounting plate 11 and the impeller ribs 8. Since the through holes 9 of the filter barrel 6 include three specifications, namely, a diameter of 0.2 cm, a diameter of 0.5 cm and a diameter of 0.7 cm, the filter barrel 6 is divided into three areas according to height and the diameters of the through holes 9 in the three areas from bottom to top are 0.2 cm, 0.5 cm and 0.7 cm respectively. During the collision process, lymph nodes with a diameter less than 0.2 cm are basically discharged from the bottom 1 / 3 area of ​​the filter barrel 6, lymph nodes with a diameter greater than 0.2 cm and less than 0.5 cm are basically discharged from the middle 1 / 3 area of ​​the filter barrel 6, and lymph nodes with a diameter greater than 0.5 cm and less than 0.7 cm are discharged from the upper 1 / 3 area of ​​the filter barrel 6; wherein, the lymph nodes discharged from the middle 1 / 3 area include lymph nodes with a diameter less than 0.2 cm, and the lymph nodes discharged from the upper 1 / 3 area include lymph nodes with a diameter less than 0.5 cm.

[0032] After a period of time, usually 5 minutes, the motor switch 15 is pressed again to stop the motor 3 and the filter barrel 6. At the same time, the magnetic switch 19 is pressed to disengage the meshing inner gear 13 and the outer gear 16; the top cover 7 is removed by the gripper 18, the filter barrel 6 is lifted upward, and the lymph nodes dropped into the outer barrel 5 are taken out for the next pathological test.

[0033] Move the filter barrel to the water pipe to rinse with live water, clean the fat tissue hanging on the intercepting thorn 10, and then disinfect it with 75% alcohol or high temperature for use.

Claims

1. A lymph node retrieval device for pathological examination, characterized in that: The invention comprises a base (1), the base (1) is circular and a vertically arranged support rod (2) is fixed at the center of the base (1), the support rod (2) is a hollow structure, a counterweight (4) is arranged inside the support rod (2) at a portion close to the base (1), an electric motor (3) is arranged on the top of the counterweight (4), a motor output shaft (14) of the electric motor (3) is arranged vertically upward and an external gear (16) is connected to the end thereof, a cylindrical outer cylinder (5) is fixed on the top of the support rod (2), a top cover (7) is arranged on the top of the outer cylinder (5), a through hole (17) connected to the support rod (2) is opened at the center of the outer cylinder (5), a filter barrel (6) arranged concentrically therewith is sleeved inside the outer cylinder (5), and a circular filter barrel (6) is arranged at the bottom of the filter barrel (6) A shaped mounting plate (11) is provided on the upper part of the mounting plate (11), a pulsator rib (8) is provided, a connecting shaft (12) is fixed at the bottom center of the mounting plate (11) and extends vertically downward, an internal gear (13) is fixed at the bottom of the connecting shaft (12), and the internal gear (13) can mesh with the external gear (16), a plurality of groups of through holes (9) and intercepting spikes (10) are evenly arranged on the cylinder wall of the filter barrel (6), the through holes (9) are circular and include a plurality of diameter specifications, and the through holes (9) of different specifications are arranged from bottom to top along the height direction of the filter barrel (6) in the order of diameter from small to large, the intercepting spikes (10) are in an L-shaped structure arranged inwardly, and the intercepting spikes (10) are respectively arranged on the inner wall of the filter barrel (6) between the through holes (9).

2. A lymph node retrieval device for pathological examination according to claim 1, characterized in that: An iron core (20) with an energized solenoid (21) is arranged inside the outer gear (16). The iron core (20) is horseshoe-shaped. The energized solenoids (21) on both sides of the iron core (20) are wound in opposite directions. When powered, the energized solenoids (21) can work together with the iron core (20) to generate magnetism in the outer gear (16). The on and off of the energized solenoids (21) is controlled by a magnetic switch (19). The magnetic switch (19) is arranged on the base (1).

3. The lymph node retrieval device for pathological examination according to claim 1, characterized in that: The through holes (9) include three specifications, namely, a diameter of 0.2 cm, a diameter of 0.5 cm and a diameter of 0.7 cm. The filter barrel (6) is divided into three regions according to height, and the diameters of the through holes (9) in the three regions from bottom to top are respectively 0.2 cm, 0.5 cm and 0.7 cm.

4. The lymph node retrieval device for pathological examination according to claim 1, characterized in that: The shape of the impeller ribs (8) is any one of an elliptical shape, a shuttle shape or a willow leaf shape. There are three impeller ribs (8) in total and they are arranged protruding from the surface of the mounting plate (11). The angle between adjacent impeller ribs (8) is 120°.

5. The lymph node retrieval device for pathological examination according to claim 1, characterized in that: The outer diameter of the internal gear (13) is smaller than the diameter of the through hole (17) and the inner diameter of the support rod (2).

6. The lymph node retrieval device for pathological examination according to claim 1, characterized in that: The intercepting thorn (10) is made of stainless steel, and the end of the intercepting thorn (10) facing the axis of the filter barrel (6) is in a smooth spherical shape.

7. The lymph node retrieval device for pathological examination according to claim 1, characterized in that: The motor (3) is connected to a motor switch (15) via a line, and the motor switch (15) is arranged on the base (1).

8. The lymph node retrieval device for pathological examination according to claim 1, characterized in that: The top cover (7) is circular and a gripper (18) is provided in the middle of the top cover (7).

Images