Pathological tissue sampling device

Abstract

The invention provides a pathological tissue sampling device, and relates to the technical field of medical instruments, the pathological tissue sampling device comprises a sampling seat, the sampling seat is provided with a sampling outer cylinder, and the inner wall of the sampling outer cylinder is in up-down sliding fit with a puncture needle; a first sampling chamber, a second sampling chamber and a third sampling chamber are sequentially formed in the peripheral side surface of the puncture needle. By rotating a threaded rod in threaded running fit with the inner wall of a threaded hole, two first sliding plates are driven to slide towards the two ends of the first sampling chamber, two second sliding plates are driven to slide towards the two ends of the second sampling chamber, and two third sliding plates are driven to slide towards the two ends of the third sampling chamber, so that the storage area of sampling tissues is reduced; according to the device, the first sampling chamber, the second sampling chamber and the third sampling chamber are respectively and repeatedly scraped and cleaned during specific cleaning, so that the repeated use of the device is realized, and tissue samples can be conveniently taken out and cleaned, disinfected or sterilized strictly according to regulations, and can be repeatedly used after effect monitoring is carried out.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a pathological tissue sampling device. Background Art

[0002] Pathological tissue refers to tissue samples taken from the patient's body for pathological examination. These samples can be obtained through surgery, biopsy, cytological examination, etc., and undergo a series of processing and analysis to determine the type, nature and severity of the disease. Pathological tissue examination is one of the important means of medical diagnosis. It can help doctors determine the diagnosis and treatment plan of the disease. In pathological tissue examination, doctors will perform macroscopic and microscopic observations on tissue samples, including the structure of the tissue, cell morphology, cell arrangement, etc., to determine whether there are abnormal cells or lesions.

[0003] Existing pathological tissue sampling tools use a puncture and drainage method to take samples. During the sampling process using a puncture needle, the tissue sample enters the sampling cavity. The structure of a tissue sample that is too small is fragile, which is not conducive to operators taking the tissue sample out of the sampling cavity. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies of the prior art, the present invention provides a pathological tissue sampling device, which solves the problem that the existing tissue samples are too small and have fragile structures, making it difficult for operators to take out the tissue samples from the sampling cavity.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a pathological tissue sampling device, including a sampling seat, on which a sampling outer cylinder is arranged, and a puncture needle is slidably matched with the inner wall of the sampling outer cylinder.

[0008] The side surface of the puncture needle is sequentially provided with a first sampling chamber, a second sampling chamber and a third sampling chamber, two bevels are arranged at both ends of the first sampling chamber, the second sampling chamber and the third sampling chamber, and two arc-shaped grooves are downwardly provided at the top of the puncture needle, and the two arc-shaped grooves sequentially penetrate the first sampling chamber, the second sampling chamber and the third sampling chamber from top to bottom.

[0009] Cutting plates are slidably fitted in the two arc-shaped grooves, a connecting ring is fixed on the top of the two cutting plates, two sliding rods are fixed on the connecting ring, and the two sliding rods are respectively located above the two cutting plates.

[0010] The inner wall of the sampling outer cylinder is provided with two rotating grooves which are respectively slidably matched with the two sliding rods.

[0011] Preferably, two first baffles are fixed on the top of the puncture needle, a first fixing rod is fixed between the two first baffles, a sliding frame is provided on the outside of the first fixing rod and located between the two first baffles, and an upper pressing rotating plate is fixed on the outside of the sliding frame.

[0012] A second fixed rod is rotatably matched with one side of the upper pressure rotating plate, and both ends of the second fixed rod are fixed with a fixed frame fixedly installed on the outer top of the sampling outer cylinder, a fixed plate is fixed on one side of the fixed frame, and two elastic springs are fixedly connected between the fixed plate and the upper pressure rotating plate.

[0013] Preferably, the inner wall of the first sampling chamber is slidably matched with two first sliding plates, the inner wall of the second sampling chamber is slidably matched with a second sliding plate, and the inner wall of the third sampling chamber is slidably matched with a third sliding plate. A first sampling cavity is formed in the first sampling chamber on the opposite side of the two first sliding plates, a second sampling cavity is formed in the second sampling chamber on the opposite side of the two second sliding plates, and a third sampling cavity is formed in the third sampling chamber on the opposite side of the two third sliding plates.

[0014] Preferably, two limit blocks are fixed on the inner wall of the connecting ring.

[0015] Two limit baffles are fixed on the top of the puncture needle and located inside the connecting ring. Limit holes that are slidably matched with the limit blocks are formed on one side of the two limit baffles.

[0016] Preferably, the inner wall of the sampling outer cylinder is provided with two lifting grooves, and the depth of the lifting grooves is smaller than the depth of the rotating groove.

[0017] A lifting plate which is respectively slidably matched with the two lifting grooves is fixed on the outer surface of the puncture needle.

[0018] The bottom of the sampling seat is configured to be made of medical rubber material.

[0019] Preferably, the top of the first sampling chamber is provided with two first limiting grooves that slidably cooperate with the two first sliding plates, the top of the second sampling chamber is provided with two second limiting grooves that slidably cooperate with the two second sliding plates, and the top of the third sampling chamber is provided with two third limiting grooves that slidably cooperate with the two third sliding plates.

[0020] Preferably, the two first sliding plates have a plurality of first compression springs fixedly connected to the puncture needle on one side relative to the other, the two second sliding plates have a plurality of second compression springs fixedly connected to the puncture needle on one side relative to the other, and the two third sliding plates have a plurality of third compression springs fixedly connected to the puncture needle on one side relative to the other.

[0021] Preferably, a threaded hole is provided on the outer top of the puncture needle, and a movable groove is connected to the first sampling chamber, the second sampling chamber and the third sampling chamber respectively at the bottom of the threaded hole. A main traction rope slides in the movable groove, and a plurality of secondary traction ropes are fixed on the main traction rope. The other ends of the plurality of secondary traction ropes are connected to any first sliding plate, the second sliding plate and the third sliding plate.

[0022] Preferably, a threaded rod is rotatably engaged with the inner wall of the threaded hole, and the bottom of the threaded rod is interconnected with the top of the traction main rope.

[0023] (III) Beneficial effects

[0024] The present invention provides a pathological tissue sampling device, which has the following beneficial effects:

[0025] 1. In the present invention, by rotating the threaded rod that cooperates with the threaded inner wall of the threaded hole, the two first sliding plates are driven to slide toward the two ends of the first sampling chamber, the two second sliding plates are driven to slide toward the two ends of the second sampling chamber, and the two third sliding plates are driven to slide toward the two ends of the third sampling chamber, thereby reducing the storage area of ​​the sampled tissue and allowing the sampled tissue to move toward the outside of the puncture needle, thereby facilitating the removal of the tissue sample.

[0026] 2. In the present invention, the sampling device is cleaned, disinfected or sterilized strictly in accordance with the regulations, and can be reused after the effect is monitored. The specific cleaning process is to repeatedly rotate the threaded rod that cooperates with the threaded inner wall of the threaded hole in forward and reverse directions, so that the two first sliding plates, the two second sliding plates and the two third sliding plates repeatedly scrape and clean the first sampling chamber, the second sampling chamber and the third sampling chamber respectively, thereby realizing the reuse of the device.

[0027] 3. In the present invention, sampling can be completed by pressing the upper rotating plate upward, which simplifies the tissue sampling steps.

[0028] 4. In the present invention, by holding the sampling outer cylinder and pressing the upper rotating plate upward, the puncture needle is driven to move downward relative to the sampling seat and the sampling outer cylinder, and the sliding rod fixed on the outer wall of the connecting ring is driven to slide along the rotating groove, thereby driving the two cutting plates fixed on the bottom of the connecting ring to rotate along the two arc grooves respectively. The two cutting plates can cut the tissues entering the first sampling cavity, the two second sampling cavities and the two third sampling cavities, thereby realizing tissue sampling at different depths, without the need for repeated tissue cutting, ensuring the diversity of samples and reducing damage to the tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of a pathological tissue sampling device of the present invention;

[0030] Figure 2 for Figure 1 A is an enlarged schematic diagram;

[0031] Figure 3 is a cross-sectional view of a pathological tissue sampling device;

[0032] Figure 4 for Figure 3 A magnified schematic diagram of B;

[0033] Figure 5 for Figure 3 A magnified schematic diagram of middle C;

[0034] Figure 6 is a cross-sectional view of the sampling seat;

[0035] Figure 7 is a schematic diagram of the structure of the puncture needle;

[0036] Figure 8 for Figure 7 A magnified schematic diagram of D in the middle;

[0037] Fig. 9 is a cross-sectional view of the puncture needle;

[0038] Fig.10 for Fig. 9 A magnified schematic diagram of E.

[0039] Among them, 1, sampling seat; 2, puncture needle; 101, sampling outer cylinder; 102, rotating groove; 103, lifting groove; 201, first sampling chamber; 2011, first sliding plate; 2012, first sampling cavity; 2013, first limiting groove; 2014, first compression spring; 202, second sampling chamber; 203, third sampling chamber; 204, arc groove; 205, cutting plate; 2051, connecting ring; 2052, sliding rod; 2053, Limit block; 206, first baffle; 2061, first fixed rod; 2062, sliding frame; 2063, upper pressure rotating plate; 2064, second fixed rod; 2065, fixed frame; 2066, fixed plate; 2067, elastic spring; 207, limit baffle; 2071, limit hole; 208, lifting plate; 209, threaded hole; 2091, movable groove; 2092, main traction rope; 2093, secondary traction rope; 2094, threaded rod. DETAILED DESCRIPTION

[0040] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0041] like Figure 1-Figure 10As shown, the embodiment of the present invention provides a pathological tissue sampling device, including a sampling seat 1, a sampling outer cylinder 101 is arranged on the sampling seat 1, and a puncture needle 2 is slidably matched with the inner wall of the sampling outer cylinder 101 up and down; the side surface of the puncture needle 2 is sequentially provided with a first sampling chamber 201, a second sampling chamber 202 and a third sampling chamber 203, and two bevels are arranged at both ends of the first sampling chamber 201, the second sampling chamber 202 and the third sampling chamber 203, and two arc grooves 204 are downwardly opened on the top of the puncture needle 2, and the two arc grooves 204 pass through the first sampling chamber 201, the second sampling chamber 202 and the third sampling chamber 203 from top to bottom in sequence; cutting plates 205 are slidably matched in the two arc grooves 204, and a connecting ring 2051 is fixed on the top of the two cutting plates 205, and two sliding rods 2052 are fixed on the connecting ring 2051, and the two sliding rods 2052 are fixed on the connecting ring 2051. The rods 2052 are respectively located above the two cutting plates 205; the inner wall of the sampling outer cylinder 101 is provided with two rotating grooves 102 which are respectively slidably matched with the two sliding rods 2052; two first baffles 206 are fixed to the top of the puncture needle 2, a first fixed rod 2061 is fixed between the two first baffles 206, the outer side of the first fixed rod 2061 is located between the two first baffles 206 and matched with a sliding frame 2062, and an upper pressing rotating plate 2063 is fixed to the outer side of the sliding frame 2062; a second fixed rod 2064 is rotatably matched with one side of the upper pressing rotating plate 2063, and a fixing frame 2065 fixedly installed on the outer top of the sampling outer cylinder 101 is fixed at both ends of the second fixed rod 2064, a fixing plate 2066 is fixed to one side of the fixing frame 2065, and two elastic springs 2067 are fixedly connected between the fixing plate 2066 and the upper pressing rotating plate 2063.

[0042] Specifically, the inner wall of the first sampling chamber 201 is slidably matched with two first sliding plates 2011, the inner wall of the second sampling chamber 202 is slidably matched with a second sliding plate, and the inner wall of the third sampling chamber 203 is slidably matched with a third sliding plate. A first sampling cavity 2012 is formed on the opposite side of the two first sliding plates 2011 in the first sampling chamber 201, a second sampling cavity is formed on the opposite side of the two second sliding plates in the second sampling chamber 202, and a third sampling cavity is formed on the opposite side of the two third sliding plates in the third sampling chamber 203; Two limit blocks 2053 are fixed to the inner wall of the connecting ring 2051; two limit baffles 207 are fixed to the top of the puncture needle 2 on the inner side of the connecting ring 2051, and limit holes 2071 that slide with the limit blocks 2053 are penetrated on one side of the two limit baffles 207; two lifting grooves 103 are opened on the inner wall of the sampling outer cylinder 101, and the depth of the lifting grooves 103 is less than the depth of the rotating groove 102; lifting plates 208 that slide with the two lifting grooves 103 are fixed to the outer surface of the puncture needle 2; the bottom of the sampling seat 1 is set to medical rubber material.

[0043] Furthermore, two first limiting grooves 2013 that slide with the two first sliding plates 2011 are provided at the top of the first sampling chamber 201, two second limiting grooves that slide with the two second sliding plates are provided at the top of the second sampling chamber 202, and two third limiting grooves that slide with the two third sliding plates are provided at the top of the third sampling chamber 203; a plurality of first compression springs 2014 are fixedly connected between the puncture needle 2 on one side relative to the two first sliding plates 2011, a plurality of second compression springs are fixedly connected between the puncture needle 2 on one side relative to the two second sliding plates, and a plurality of second compression springs are fixedly connected between the puncture needle 2 on one side relative to the two third sliding plates A third compression spring is provided; a threaded hole 209 is provided on the outer top of the puncture needle 2, and a movable groove 2091 which is respectively connected to the first sampling chamber 201, the second sampling chamber 202 and the third sampling chamber 203 at the bottom of the threaded hole 209, a main traction rope 2092 slides in the movable groove 2091, and a plurality of secondary traction ropes 2093 are fixed on the main traction rope 2092, and the other ends of the plurality of secondary traction ropes 2093 are connected to any first sliding plate 2011, the second sliding plate and the third sliding plate; a threaded rod 2094 is rotatably matched with a thread on the inner wall of the threaded hole 209, and the bottom of the threaded rod 2094 is connected to the top of the main traction rope 2092.

[0044] The operation process of the present invention is as follows: the sampling device is placed at the diseased site to be sampled, so that the bottom of the sampling seat 1 made of medical rubber material contacts the sampling epidermis, which is conducive to the stability of the tissue sampling process, and then the upper pressing rotating plate 2063 is pressed upward by holding the sampling outer cylinder 101 (the inner diameter of the sampling outer cylinder 101 is 7mm*5cm), so that the upper pressing rotating plate 2063 rotates relative to the first fixed rod 2061, and the two elastic springs 2067 are compressed, driving the first fixed rod 2061 that slides in the sliding frame 2062 to slide. The two lifting plates 208 fixed on the outer surface of the puncture needle 2 are restricted by the sliding cooperation between the two lifting grooves 103 provided on the inner wall of the sampling outer cylinder 101, driving the puncture needle 2 to move downward relative to the sampling seat 1 and the sampling outer cylinder 101, and the bottom tip of the puncture needle 2 gradually penetrates into the tissue sampling area. After penetrating into the tissue sampling area, the puncture needle 2 will generate a squeezing force on the surrounding tissues. At this time, the sampled tissues are squeezed into the two first sampling cavities 2012, the two second sampling cavities and the two third sampling cavities, completing the grabbing of the tissue samples. When the puncture needle 2 is relative to the sampling seat 1 and the sampling outer cylinder 101, the puncture needle 2 is pushed into the two first sampling cavities 2012, the two second sampling cavities and the two third sampling cavities. During the downward movement, the sliding rod 2052 fixed on the outer wall of the connecting ring 2051 is driven to slide along the rotating groove 102, thereby driving the two cutting plates 205 fixed at the bottom of the connecting ring 2051 to rotate along the two arc-shaped grooves 204 respectively, until the bottom tip of the puncture needle 2 penetrates into the tissue to a certain depth and the two first sampling cavities 2012, the two second sampling cavities and the two third sampling cavities are completely immersed in the tissue sampling area, the two cutting plates 205 can cut the tissues in the first sampling cavity 2012, the two second sampling cavities and the two third sampling cavities, and then release the upper pressure. The rotating plate 2063 and the two cutting plates 205 return to the initial position under the elastic force of the two elastic springs 2067, and finally the sampling device is moved upward. The two beveled angles at both ends of the first sampling chamber 201, the second sampling chamber 202 and the third sampling chamber 203 can prevent the sampled tissue from falling off from the puncture needle 2, thereby realizing tissue sampling at different depths, eliminating the need for repeated tissue cutting, ensuring the diversity of samples and reducing damage to the tissue. Sampling can be completed by simply pressing the upper rotating plate 2063 upward, thereby simplifying the tissue sampling steps.

[0045] After tissue sampling is completed, the threaded rod 2094 that cooperates with the threaded rod 2094 is rotated by rotating the inner wall thread of the threaded hole 209, so that the threaded rod 2094 moves downward relative to the puncture needle 2, the traction main rope 2092 moves downward relative to the puncture needle 2, and the several traction secondary ropes 2093 fixed on the traction main rope 2092 move toward the two first sliding plates 2011, the two second sliding plates and the two third sliding plates respectively. At this time, the first compression spring 2014, the second compression spring and the third compression spring gradually reduce the compression degree from the initial compression state, driving the two first sliding plates 2011 to slide toward the two ends of the first sampling chamber 201, driving the two second sliding plates to slide toward the two ends of the second sampling chamber 202, and driving the two third sliding plates to slide toward the third sampling chamber. The two ends of the sample chamber 203 slide, reducing the storage area of ​​the sampled tissue. The storage area is the first sampling chamber 2012, the two second sampling chambers and the two third sampling chambers, so that the sampled tissue moves to the outside of the puncture needle 2, which is convenient for taking out the tissue sample. In addition, the sampling device is cleaned, disinfected or sterilized in strict accordance with the regulations, and can be reused after effect monitoring. The specific cleaning process is to repeatedly rotate the threaded rod 2094 that cooperates with the threaded hole 209 inner wall thread in forward and reverse directions, so that the two first sliding plates 2011, the two second sliding plates and the two third sliding plates repeatedly scrape and clean the first sampling chamber 201, the second sampling chamber 202 and the third sampling chamber 203, respectively, to achieve the reuse of the device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pathological tissue sampling device, characterized in that: It comprises a sampling seat (1), on which a sampling outer cylinder (101) is arranged, and the inner wall of the sampling outer cylinder (101) is slidably matched with a puncture needle (2) up and down; The lateral side of the puncture needle (2) is provided with a first sampling chamber (201), a second sampling chamber (202) and a third sampling chamber (203) in sequence, and two bevels are arranged at both ends of the first sampling chamber (201), the second sampling chamber (202) and the third sampling chamber (203). The top of the puncture needle (2) is provided with two arc-shaped grooves (204) extending downward, and the two arc-shaped grooves (204) penetrate the first sampling chamber (201), the second sampling chamber (202) and the third sampling chamber (203) in sequence from top to bottom. The two arc-shaped grooves (204) are both slidably fitted with cutting plates (205), a connecting ring (2051) is fixed on the top of the two cutting plates (205), and two sliding rods (2052) are fixed on the connecting ring (2051), and the two sliding rods (2052) are respectively located above the two cutting plates (205); The inner wall of the sampling outer cylinder (101) is provided with two rotating grooves (102) respectively slidably matched with the two sliding rods (2052).

2. A pathological tissue sampling device according to claim 1, characterized in that: Two first baffles (206) are fixed on the top of the puncture needle (2), a first fixing rod (2061) is fixed between the two first baffles (206), a sliding frame (2062) is matched on the outside of the first fixing rod (2061) and is located between the two first baffles (206), and an upper pressing rotating plate (2063) is fixed on the outside of the sliding frame (2062); One side of the upper pressure rotating plate (2063) is rotatably matched with a second fixed rod (2064), and both ends of the second fixed rod (2064) are fixed with a fixed frame (2065) fixedly installed on the outer top of the sampling outer cylinder (101), and one side of the fixed frame (2065) is fixed with a fixed plate (2066), and two elastic springs (2067) are fixedly connected between the fixed plate (2066) and the upper pressure rotating plate (2063).

3. A pathological tissue sampling device according to claim 2, characterized in that: The inner wall of the first sampling chamber (201) is slidably fitted with two first sliding plates (2011), the inner wall of the second sampling chamber (202) is slidably fitted with a second sliding plate, and the inner wall of the third sampling chamber (203) is slidably fitted with a third sliding plate. A first sampling cavity (2012) is formed in the first sampling chamber (201) on the opposite side of the two first sliding plates (2011), a second sampling cavity is formed in the second sampling chamber (202) on the opposite side of the two second sliding plates, and a third sampling cavity is formed in the third sampling chamber (203) on the opposite side of the two third sliding plates.

4. A pathological tissue sampling device according to claim 3, characterized in that: Two limit blocks (2053) are fixed on the inner wall of the connecting ring (2051); Two limit baffles (207) are fixed on the top of the puncture needle (2) and located inside the connecting ring (2051). Limit holes (2071) that slidably cooperate with the limit blocks (2053) are formed through one side of the two limit baffles (207).

5. A pathological tissue sampling device according to claim 4, characterized in that: The inner wall of the sampling outer cylinder (101) is provided with two lifting grooves (103), and the groove depth of the lifting grooves (103) is smaller than the groove depth of the rotating groove (102); The outer surface of the puncture needle (2) is fixed with a lifting plate (208) which is slidably matched with the two lifting grooves (103) respectively; The bottom of the sampling seat (1) is made of medical rubber material.

6. A pathological tissue sampling device according to claim 5, characterized in that: The top of the first sampling chamber (201) is provided with two first limiting grooves (2013) that are slidably matched with the two first sliding plates (2011), the top of the second sampling chamber (202) is provided with two second limiting grooves that are slidably matched with the two second sliding plates, and the top of the third sampling chamber (203) is provided with two third limiting grooves that are slidably matched with the two third sliding plates.

7. A pathological tissue sampling device according to claim 6, characterized in that: A plurality of first compression springs (2014) are fixedly connected between the opposite side of the two first sliding plates (2011) and the puncture needle (2), a plurality of second compression springs are fixedly connected between the opposite side of the two second sliding plates and the puncture needle (2), and a plurality of third compression springs are fixedly connected between the opposite side of the two third sliding plates and the puncture needle (2).

8. A pathological tissue sampling device according to claim 7, characterized in that: A threaded hole (209) is provided at the top of the puncture needle (2), and a movable groove (2091) is connected to the first sampling chamber (201), the second sampling chamber (202) and the third sampling chamber (203) at the bottom of the threaded hole (209), and a main traction rope (2092) slides in the movable groove (2091), and a plurality of secondary traction ropes (2093) are fixed on the main traction rope (2092), and the other ends of the plurality of secondary traction ropes (2093) are connected to any first sliding plate (2011), the second sliding plate and the third sliding plate.

9. A pathological tissue sampling device according to claim 8, characterized in that: The inner wall of the threaded hole (209) is threadedly rotatably matched with a threaded rod (2094), and the bottom of the threaded rod (2094) is connected to the top of the traction main rope (2092).

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