CN115530889B - Tumor sampling equipment convenient for separating tumor - Google Patents

Abstract

The application belongs to the technical field of medical sampling equipment, and particularly relates to tumor sampling equipment convenient for separating tumors, which comprises a fixed shell, wherein a puncture handle is fixedly connected to the side wall of the fixed shell, one end of the fixed shell, which is close to the puncture handle, is connected with a puncture depth detection unit, one end of the fixed shell, which is far away from the puncture depth detection unit, is provided with a sampling end, the sampling end is connected with a puncture needle assembly, one end of the puncture needle assembly, which is far away from the sampling end, is provided with a puncture end, one end of the puncture needle assembly, which is far away from the puncture end, passes through the sampling end and is positioned in the fixed shell, a first cavity is formed in the fixed shell, a driving unit is arranged in the first cavity, the puncture needle assembly drives sampling through the driving unit, an auxiliary sampling unit is communicated in the puncture needle assembly, and the auxiliary sampling unit is used for assisting the driving unit in sampling and is convenient for releasing samples. The application can automatically intercept tumor samples and release tumor samples, accurately grasp the puncture depth, and ensure that the whole sampling process is smoother and more stable.

Description

A tumor sampling device that facilitates tumor isolation

Technical field

The invention belongs to the technical field of medical sampling equipment, and in particular relates to a tumor sampling equipment that facilitates tumor separation.

Background technique

Tumors refer to new organisms formed by the proliferation of local tissue cells in the body under the action of various tumorigenic factors. Because these new organisms are mostly space-occupying massive protrusions, also known as neoplasms, when judging whether a tumor is benign or malignant, Doctors are required to use a sampling device to perform laboratory testing on tumor samples. However, the existing sampling equipment uses negative pressure to absorb tumor tissue. This method has small incisions and reduces the pain of the patient. However, traditional needle sampling cannot easily succeed in negative pressure sampling alone. The adsorption process is not accurate enough and the puncture process is not enough. Stable, the intercepted sample is not easy to detach, and manual detachment is required, making the overall sampling process cumbersome; therefore, there is an urgent need for a method that can automatically intercept tumor samples, release tumor samples, and accurately grasp the puncture depth, making the entire sampling process smoother and more stable. Tumor sampling device to isolate tumors.

Contents of the invention

The purpose of the present invention is to provide a tumor sampling device that facilitates tumor separation to solve the above problems and achieve the purpose of effectively improving sampling stability and accuracy.

In order to achieve the above object, the present invention provides the following solution: a tumor sampling device that facilitates tumor separation, including a fixed housing, a puncture handle fixedly connected to the side wall of the fixed housing, and the fixed housing is close to the One end of the puncture handle is connected to a puncture depth detection unit, and one end of the fixed housing away from the puncture depth detection unit is set as a sampling end. The sampling end is connected to a puncture needle assembly, and the puncture needle assembly is far away from the puncture depth detection unit. One end of the sampling end is set as a puncture end, and one end of the puncture needle assembly away from the puncture end passes through the sampling end and is located in the fixed housing. A first cavity is provided in the fixed housing, and the first cavity is A driving unit is provided in the cavity, and the puncture needle assembly drives sampling through the driving unit. An auxiliary sampling unit is communicated with the puncture needle assembly. The auxiliary sampling unit is used to assist the driving unit in sampling and also Easy to release sample.

Preferably, the puncture needle assembly includes an outer needle assembly and an inner needle assembly. The outer needle assembly is sleeved on the outside of the inner needle assembly. One end of the outer needle assembly away from the puncture end is detachably connected to the needle assembly. On the sampling end, the inner needle assembly passes through the sampling end and one end located in the fixed housing is drivingly connected to the output end of the driving unit, and the auxiliary sampling unit passes through the outer needle assembly and is connected to the The inner needle assembly is internally connected.

Preferably, the inner needle assembly includes a sliding rod assembly, a transmission needle core and an inner sampling needle that are fixedly connected in sequence. The sliding rod assembly is drivingly connected to the output end of the drive unit, and the sliding rod assembly rotates. while moving in the sampling direction, one end of the transmission needle core penetrating the sampling end is located in the outer needle assembly, the inner sampling needle is disposed close to the puncture end, the auxiliary sampling unit and the transmission needle core, The inner side of the inner sampling needle is connected.

Preferably, the inner sampling needle includes a cutting needle core and a thin-walled inner needle. The thin-walled inner needle is sleeved on the outside of the cutting needle core. One end of the cutting needle core is away from the transmission needle core. One end of the fixed housing is fixedly connected to the axial center, and the other end of the cutting needle core is fixedly connected with a cutting edge. The cutting edge is close to the puncture end. A threaded groove is provided on the side wall of the cutting needle core. The cutting needle core forms a hollow thin slice thread-like structure through the thread groove, the cutting edge is located at one end of the thread groove away from the transmission needle core, and the thin-walled inner needle is coaxial with one end away from the cutting edge. The core is fixedly connected to the cutting needle core, and the wall thickness of the thin-walled inner needle is smaller than the wall thickness of the transmission needle core.

Preferably, the outer needle assembly includes a threaded end, a first outer needle, a second outer needle and a third outer needle that are fixedly connected to the coaxial center in sequence, and one end of the threaded end close to the sampling end is connected to the fixed end. The housing is threaded, the third outer needle is sleeved on the outside of the cutting needle core, the wall thickness of the third outer needle is smaller than the wall thickness of the second outer needle, and the auxiliary sampling unit passes through the The first outer needle communicates with the inner side of the second outer needle.

Preferably, the drive unit includes a motor fixedly connected in the first cavity, the rotating shaft of the motor is fixedly connected to a threaded rod coaxially, and a transmission bracket assembly is provided in a threaded sleeve on the outside of the threaded rod. , the transmission bracket assembly is slidingly connected in the first cavity along the sampling direction, a gap is provided between one end of the transmission bracket assembly away from the motor and one end of the threaded rod, and the sliding rod One end of the assembly away from the transmission needle core passes through the transmission bracket assembly and also extends into the threaded rod. The transmission bracket assembly is drivingly connected to the sliding rod assembly and the transmission needle core. The threaded rod and the transmission bracket assembly drive the transmission needle core to telescopically sample through the sliding rod assembly.

Preferably, the slide rod assembly includes a shaft core that is coaxially fixedly connected to the transmission pin core, and one end of the threaded rod away from the motor is sleeved on the shaft core and passes through the transmission bracket assembly. On the outside of one end of the threaded rod, a second chute is symmetrically provided in the threaded rod. The second chute is arranged along the sampling direction. An ear plate is symmetrically fixed and connected to the outer side of the shaft core. The two sets of ear plates slide correspondingly. Connected in two sets of second chutes, one end of the transmission pin core close to the shaft core is rotatably connected to the transmission bracket assembly, and one end of the transmission bracket assembly away from the motor is connected to the A spring is in contact with one end of the fixed housing close to the sampling end, and the spring is sleeved on the outside of the transmission needle core.

Preferably, the transmission bracket assembly includes a threaded sleeve threaded on the outside of the threaded rod. Fixed connecting rods are symmetrically fixed to the edges of the threaded sleeve, and the two sets of fixed connecting rods are distant from the said threaded rod. The same end of the motor is fixedly connected and has the gap between it and the threaded rod. The outer fixed sleeve of one end of the transmission needle core close to the shaft core is provided with a fixed ring. The two sets of fixed connecting rods are close to each other. The outer thread sleeve of the same end of the transmission needle core is provided with a threaded end cap. The transmission needle core passes through the center of the threaded end cap. The fixed ring is located inside the threaded end cap and is connected to the two sets of fixed connections. Between the rods, between the fixed ring and the inner bottom wall of the threaded end cap, and between the fixed ring and the two sets of fixed connecting rods, there are a number of rolling balls, and the springs are in contact with each other. between the threaded end cap and one end of the fixed housing close to the sampling end.

Preferably, an upper slider and a lower slider are vertically fixedly connected to the opposite sides of the two sets of fixed connecting rods. The upper slider is disposed close to the motor, and the first cavity is symmetrically and fixedly connected with a fixed slider. The two sets of fixed plates are provided with first chute on the opposite sides respectively, and all the upper slide blocks and the lower block are slidingly connected in the two sets of first chute along the sampling direction.

Preferably, the puncture depth detection unit includes a display screen and a distance sensor, the display screen is fixedly connected to the outside of an end of the fixed housing away from the sampling end, and the distance sensor is fixedly connected in the first cavity. , the detection end of the distance sensor is arranged correspondingly to a set of upper slide blocks.

The present invention has the following technical effects: under the guidance of CT, the puncture needle assembly is passed through the skin and extended into the tumor by holding the puncture handle; the main function of the puncture depth detection unit is to determine the puncture depth through the displacement of the puncture needle assembly. data, and effectively combined with CT to achieve the purpose of precise puncture; the main function of the driving unit is to drive the puncture needle assembly to penetrate the tumor, intercept some tumor samples and then break away from the tumor; the main function of the auxiliary sampling unit is to assist the driving unit to facilitate sampling The process is smoother and more stable, and it can also assist the driving unit to separate the sample from the puncture needle assembly; overall, this application can automatically intercept tumor samples, release tumor samples, and accurately grasp the puncture depth, making the entire sampling process smoother and more stable. .

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the drawings of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic diagram of the appearance of the sampling equipment of the present invention;

Figure 2 is a schematic diagram of the internal structure of the sampling equipment of the present invention;

Figure 3 is a partially enlarged schematic diagram of A in Figure 2;

Figure 4 is a partially enlarged schematic diagram of B in Figure 2;

Figure 5 is a schematic structural diagram of the cutting needle core of the present invention;

Figure 6 is a schematic cross-sectional view of the threaded rod of the present invention;

Among them, 1. Puncture handle; 2. Start switch; 3. Fixed housing; 4. Display screen; 5. Threaded end; 6. Negative pressure tube; 7. First outer needle; 8. Second outer needle; 9 , The third outer needle; 10. The first cavity; 11. Motor; 12. Distance sensor; 13. Fixed disc; 14. Fixed sleeve; 15. Upper slider; 16. Threaded sleeve; 17. Lower slider ; 18. Fixed connecting rod; 19. Threaded rod; 20. Shaft core; 21. Threaded end cap; 22. Via hole; 23. Transmission needle core; 24. First chute; 25. Cutting needle core; 26. Ear Plate; 27, ball; 28, fixed ring; 29, thin-walled inner needle; 30, cutting edge; 31, thread groove; 32, second chute; 33, needle mouth; 34, fixed plate; 35, second Cavity; 36. Liquid injection pipe; 37. Tee joint; 38. Spring.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

Referring to Figures 1-6, the present invention provides a tumor sampling device that facilitates tumor separation, including a fixed housing 3. A puncture handle 1 is fixedly connected to the side wall of the fixed housing 3, and the fixed housing 3 is close to the puncture handle. One end of 1 is connected to a puncture depth detection unit, and the end of the fixed housing 3 away from the puncture depth detection unit is set as the sampling end. The sampling end is connected to a puncture needle assembly. The end of the puncture needle assembly away from the sampling end is set as the puncture end. The puncture needle One end of the assembly away from the puncture end passes through the sampling end and is located in the fixed housing 3. A first cavity 10 is provided in the fixed housing 3. A driving unit is provided in the first cavity 10. The puncture needle assembly is driven by the driving unit. For sampling, the puncture needle assembly is connected with an auxiliary sampling unit. The auxiliary sampling unit is used to assist the driving unit in sampling and also facilitates sample release.

Under the guidance of CT, hold the puncture handle 1 to pass the puncture needle assembly through the skin and extend into the tumor; the main function of the puncture depth detection unit is to judge the puncture depth data through the displacement of the puncture needle assembly, and is effective with CT Combined to achieve the purpose of precise puncture; the main function of the driving unit is to drive the puncture needle assembly to penetrate into the tumor, intercept some tumor samples and then break away from the tumor; the main function of the auxiliary sampling unit is to assist the driving unit to make the sampling process smoother and more stable. At the same time, it can also assist the driving unit to separate the sample from the puncture needle assembly; overall, this application can automatically intercept and release tumor samples, and can also accurately grasp the puncture depth, making the entire sampling process smoother and more stable.

To further optimize the solution, the puncture needle assembly includes an outer needle assembly and an inner needle assembly. The outer needle assembly is set on the outside of the inner needle assembly. The end of the outer needle assembly away from the puncture end is detachably connected to the sampling end, and the inner needle assembly passes through the sampling end. The end located in the fixed housing 3 is drivingly connected to the output end of the drive unit, and the auxiliary sampling unit passes through the outer needle assembly and communicates with the inner needle assembly.

First, an incision is made on the skin surface close to the tumor. Using CT, hold the puncture handle 1 to extend the puncture needle assembly into the skin incision and reach the tumor surface. Then, the drive unit drives the inner needle assembly to move, so that the inner needle assembly performs puncture. For sampling, the auxiliary sampling unit facilitates the inner needle assembly to release the tumor sample.

To further optimize the solution, the inner needle assembly includes a sliding rod assembly, a transmission needle core 23 and an inner sampling needle that are fixedly connected in sequence. The sliding rod assembly is drivingly connected to the output end of the drive unit, so that the sliding rod assembly rotates along the sampling direction. Move, one end of the transmission needle core 23 penetrating the sampling end is located in the outer needle assembly, the inner sampling needle is set close to the puncture end, and the auxiliary sampling unit is connected with the transmission needle core 23 and the inner side of the inner sampling needle.

By starting the driving unit, the sliding rod assembly is driven to rotate, and the transmission needle core 23 and the inner sampling needle are synchronously driven to rotate. Sampling is performed through rotational motion and movement in the sampling direction.

To further optimize the solution, the inner sampling needle includes a cutting needle core 25 and a thin-walled inner needle 29. The thin-walled inner needle 29 is set on the outside of the cutting needle core 25. One end of the cutting needle core 25 and the transmission needle core 23 are away from the fixed housing 3. One end of the cutting needle core 25 is fixedly connected to the axial center, and the other end of the cutting needle core 25 is fixedly connected with a cutting edge 30. The cutting edge 30 is close to the puncture end. A threaded groove 31 is provided on the side wall of the cutting needle core 25, and the cutting needle core 25 passes through the threaded groove. 31 forms a hollow thin slice thread-like structure. The cutting edge 30 is located at one end of the thread groove 31 away from the transmission needle core 23. The end of the thin-walled inner needle 29 away from the cutting edge 30 is fixedly connected to the cutting needle core 25 coaxially. The thin-walled inner needle The wall thickness of 29 is smaller than the wall thickness of the transmission needle core 23 .

When the drive unit drives the slide rod assembly, it synchronously drives the cutting needle core 25 and the thin-walled inner needle 29 to rotate and move in the sampling direction. The cutting needle core 25 performs puncture simultaneously while rotating, which will cut the tumor and remove the tumor. The block enters the inner cavity of the cutting needle core 25. During this puncture process, the thin-walled inner needle 29 moves synchronously with the cutting needle core 25 to ensure that the cut tumor block is stored in the cutting needle core 25, which is convenient for withdrawing the inner sampling needle. , to avoid the tissue fluid on the surface of the tumor mass from contaminating other tissues, and at the same time ensuring the integrity of the tumor sample; the wall thickness of the thin-walled inner needle 29 is smaller than the wall thickness of the transmission needle core 23, which enables the cutting needle core 25 to intercept as many samples as possible from the inner cavity of the needle core 25 .

To further optimize the solution, the outer needle assembly includes a threaded head 5, a first outer needle 7, a second outer needle 8 and a third outer needle 9 that are fixedly connected to the coaxial center in sequence. The end of the threaded head 5 close to the sampling end is connected to the fixed housing. 3 threaded connection, the third outer needle 9 is set on the outside of the cutting needle core 25, the wall thickness of the third outer needle 9 is smaller than the wall thickness of the second outer needle 8, the auxiliary sampling unit communicates with the second outer needle through the first outer needle 7 The inner side of needle 8 is connected.

During puncture, the third outer needle 9 and the second outer needle 8 enter the body sequentially from the skin incision, and the needle port 33 of the third outer needle 9 first contacts the tumor surface.

To further optimize the solution, the drive unit includes a motor 11 fixedly connected in the first cavity 10. The rotating shaft of the motor 11 is fixedly connected to the threaded rod 19 coaxially. The outer thread of the threaded rod 19 is provided with a transmission bracket assembly. The bracket assembly is slidably connected in the first cavity 10 along the sampling direction. There is a gap between the end of the transmission bracket assembly away from the motor 11 and the end of the threaded rod 19. The end of the slide rod assembly away from the transmission needle core 23 passes through The transmission bracket assembly also extends into the threaded rod 19. The transmission bracket assembly is transmission connected with the sliding rod assembly and the transmission needle core 23. The threaded rod 19 and the transmission bracket assembly drive the transmission needle core 23 through the sliding rod assembly to telescopically sample. .

The starter motor 11 rotates, driving the threaded rod 19 to rotate and at the same time driving the transmission bracket assembly and the sliding rod assembly to slide in the sampling direction. When the transmission bracket assembly moves to the end of the threaded rod 19 away from the motor 11, the transmission bracket assembly detaches. The threaded section of the threaded rod 19, the transmission bracket assembly and the threaded rod 19 rotate relative to each other. As the threaded rod 19 and the sliding rod assembly continue to rotate, the transmission bracket assembly no longer moves in the sampling direction. At this time, through the sliding rod The rotation of the assembly drives the cutting edge 30 to cut off the tumor mass.

To further optimize the solution, the sliding rod assembly includes a shaft core 20 that is fixedly connected to the transmission needle core 23 coaxially. The end of the threaded rod 19 away from the motor 11 is set on the outside of the end of the shaft core 20 that passes through the transmission bracket assembly. The threaded rod 19 A second chute 32 is symmetrically provided in 19. The second chute 32 is arranged along the sampling direction. The outer side of the shaft core 20 is symmetrically fixedly connected with ear plates 26. The two sets of ear plates 26 are respectively slidingly connected to the two sets of second chute. 32, one end of the transmission needle core 23 close to the shaft core 20 is rotatably connected to the transmission bracket assembly. There is a spring 38 in contact between the end of the transmission bracket assembly away from the motor 11 and the end of the fixed housing 3 close to the sampling end. The spring 38 sets are arranged on the outside of the transmission needle core 23.

In the initial state, the spring 38 is in a free state. When the motor 11 rotates, it drives the threaded rod 19 and the shaft core 20 to rotate. At the same time, through the transmission bracket assembly, the shaft core 20 slides along the axis direction in the threaded rod 19, and the two sets of ear plates 26 Slide along the second chute 32, thereby driving the cutting needle core 25 to rotate and move in the sampling direction, forming a rotating cutting effect; when the transmission bracket assembly is separated from the threaded section of the threaded rod 19, the transmission bracket assembly and the threaded rod 19 When the cutting needle core 25 rotates and no longer punctures, the cutting edge 30 cuts off the captured tumor mass; when the motor 11 is started in the reverse direction, the threaded rod 19 and the shaft core 20 are driven in the reverse direction. Rotation, under the action of the rebound force of the spring 38, the transmission bracket assembly is re-connected to the thread of the threaded rod 19. The cutting edge 30 also plays the role of bearing the tumor sample block at this time, preventing the tumor sample block from turning the cutting needle core 25, it will slide away, thereby driving the removed tumor mass away from the tumor.

To further optimize the solution, the transmission bracket assembly includes a threaded sleeve 16 threaded on the outside of the threaded rod 19. The edges of the threaded sleeve 16 are symmetrically fixed with fixed connecting rods 18, and the two sets of fixed connecting rods 18 are away from the same side of the motor 11. The end is fixedly connected and has a gap with the threaded rod 19. The outer fixed sleeve of the end of the transmission needle core 23 close to the shaft core 20 is provided with a fixed ring 28. Two sets of fixed connecting rods 18 are close to the outer end of the same end of the transmission needle core 23. The threaded sleeve is provided with a threaded end cap 21. The transmission needle core 23 passes through the center of the threaded end cap 21. The fixed ring 28 is located between the inside of the threaded end cap 21 and the two sets of fixed connecting rods 18. The fixed ring 28 and the threaded end cap 21 A number of balls 27 are rollingly fitted between the inner bottom walls and between the fixed ring 28 and the two sets of fixed connecting rods 18. The spring 38 is in contact between the threaded end cap 21 and the end of the fixed housing 3 close to the sampling end.

The plurality of balls 27 can ensure that the transmission needle core 23 is more smooth and stable during the rotation and puncture process, and can also help to intercept the integrity of the tumor sample.

To further optimize the solution, the opposite sides of the two sets of fixed connecting rods 18 are vertically fixedly connected with an upper slider 15 and a lower slider 17 respectively. The upper slider 15 is arranged close to the motor 11, and a fixed plate is symmetrically fixedly connected in the first cavity 10. 34. The opposite sides of the two sets of fixed plates 34 are respectively provided with first chute 24, and all the upper slide blocks 15 and the lower block 17 are slidingly connected in the two sets of first chute 24 along the sampling direction.

To further optimize the solution, the puncture depth detection unit includes a display screen 4 and a distance sensor 12. The display screen 4 is fixedly connected to the outside of the end of the fixed housing 3 away from the sampling end. The distance sensor 12 is fixedly connected in the first cavity 10. The distance sensor 12 The detection end is provided correspondingly with a set of upper sliders 15.

By monitoring the distance between the distance sensor 12 and the upper slider 15, the puncture depth of the transmission needle core 23 can be monitored in real time, which together with CT ensures the accuracy of the puncture and ensures the stability and smoothness of the entire puncture process.

To further optimize the solution, a fixed disk 13 is fixedly connected to the first cavity 10, and a fixed sleeve 14 is fixedly penetrated through the center of the fixed disk 13. The fixed sleeve 14 is set on the outside of the rotation axis of the motor 11, and the detection end of the distance sensor 12 A set of upper slide blocks 15 are provided correspondingly through the fixed disc 13 .

To further optimize the solution, a second cavity 35 is provided between the first outer needle 7 and the transmission needle core 23. A number of through holes 22 are provided on the side wall of the transmission needle core 23, and the outer side walls of the first outer needle 7 are fixedly connected. There is a tee joint 37. One end of the tee joint 37 away from the first outer needle 7 is fixedly connected to the negative pressure tube 6 and the liquid injection tube 36. The transmission needle core 23 passes through a plurality of through holes 22 and the negative pressure tube 6 or the liquid injection tube. The tubes 36 are connected. One end of the negative pressure tube 6 away from the tee joint 37 is connected to a negative pressure device or an air pump. The end of the injection tube 36 away from the tee joint 37 is connected to a physiological saline syringe.

When the cutting edge 30 cuts off the tumor mass, the negative pressure device is started to adsorb the tumor sample to the cutting needle core 25. When the cutting needle core 25 needs to be pulled out of the incision, the tumor sample is effectively prevented from breaking away from the cutting needle core 25. When the cutting needle core 25 is When 25 leaves the human body and extends into the preservation liquid, the negative pressure is stopped, the air pump is started, and positive pressure is generated in the transmission needle core 23 to push out the tumor sample; the cutting needle core 25 reaches the tumor surface, and before puncture, the normal saline syringe can inject the tumor The tissue fluid is diluted on or near the surface of the block to prevent tissue fluid from affecting the amount of tumor-like block interception, and it also facilitates puncture.

In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention, rather than indicating or It is implied that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation and is therefore not to be construed as a limitation of the invention.

The above-described embodiments only describe the preferred modes of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, those of ordinary skill in the art can make various modifications to the technical solutions of the present invention. All deformations and improvements shall fall within the protection scope determined by the claims of the present invention.

Claims (3)

1. A tumor sampling device for conveniently separating tumors, which is characterized in that: the device comprises a fixed shell (3), wherein a puncture handle (1) is fixedly connected to the side wall of the fixed shell (3), one end, close to the puncture handle (1), of the fixed shell (3) is connected with a puncture depth detection unit, one end, far away from the puncture depth detection unit, of the fixed shell (3) is set to be a sampling end, the sampling end is connected with a puncture needle assembly, one end, far away from the sampling end, of the puncture needle assembly is set to be a puncture end, one end, far away from the puncture end, of the puncture needle assembly penetrates through the sampling end and is positioned in the fixed shell (3), a first cavity (10) is formed in the fixed shell (3), a driving unit is arranged in the first cavity (10), the puncture needle assembly drives sampling through the driving unit, an auxiliary sampling unit is communicated in the puncture needle assembly and is used for assisting the driving unit in sampling and is also convenient for releasing samples; the puncture needle assembly comprises an outer needle assembly and an inner needle assembly, the outer needle assembly is sleeved on the outer side of the inner needle assembly, one end, far away from the puncture end, of the outer needle assembly is detachably connected to the sampling end, the inner needle assembly penetrates through the sampling end, one end, located in the fixed shell (3), of the inner needle assembly is in transmission connection with the output end of the driving unit, and the auxiliary sampling unit penetrates through the outer needle assembly and is communicated with the inner needle assembly; the inner needle assembly comprises a sliding rod assembly, a transmission needle core (23) and an inner sampling needle head which are sequentially and fixedly connected, the sliding rod assembly is in transmission connection with the output end of the driving unit, the sliding rod assembly rotates and moves along the sampling direction, one end of the transmission needle core (23) penetrating through the sampling end is positioned in the outer needle assembly, the inner sampling needle head is arranged close to the puncturing end, and the auxiliary sampling unit is communicated with the transmission needle core (23) and the inner side of the inner sampling needle head; the inner sampling needle comprises a cutting needle core (25) and a thin-wall inner needle (29), the thin-wall inner needle (29) is sleeved on the outer side of the cutting needle core (25), one end of the cutting needle core (25) is coaxially and fixedly connected with one end of the transmission needle core (23) far away from the fixed shell (3), the other end of the cutting needle core (25) is fixedly connected with a cutting blade (30), the cutting blade (30) is close to the puncturing end, a thread groove (31) is formed in the side wall of the cutting needle core (25), the cutting needle core (25) forms a hollow sheet thread-shaped structure through the thread groove (31), the cutting blade (30) is located at one end of the thread groove (31) far away from the transmission needle core (23), one end of the thin-wall inner needle (29) far away from the cutting blade (30) is coaxially and fixedly connected onto the cutting needle core (25), and the wall thickness of the thin-wall inner needle (29) is smaller than that of the transmission needle core (23); the outer needle assembly comprises a threaded end head (5), a first outer needle (7), a second outer needle (8) and a third outer needle (9) which are fixedly connected with each other in a coaxial mode in sequence, one end, close to the sampling end, of the threaded end head (5) is in threaded connection with the fixed shell (3), the third outer needle (9) is sleeved on the outer side of the cutting needle core (25), the wall thickness of the third outer needle (9) is smaller than that of the second outer needle (8), and the auxiliary sampling unit is communicated with the inner side of the second outer needle (8) through the first outer needle (7); the driving unit comprises a motor (11) fixedly connected in the first cavity (10), a rotating shaft of the motor (11) is coaxially and fixedly connected with a threaded rod (19), a transmission support assembly is sleeved on the outer side of the threaded rod (19), the transmission support assembly is slidably connected in the first cavity (10) along the sampling direction, a gap is formed between one end, away from the motor (11), of the transmission support assembly and one end of the threaded rod (19), one end, away from the transmission needle core (23), of the sliding rod assembly penetrates through the transmission support assembly and also stretches into the threaded rod (19), the transmission support assembly is in transmission connection with the sliding rod assembly and the transmission needle core (23), and the threaded rod (19) and the transmission support assembly drive the transmission needle core (23) to stretch and sample through the sliding rod assembly; the sliding rod assembly comprises a shaft core (20) fixedly connected with the coaxial center of the transmission needle core (23), one end, far away from the motor (11), of the threaded rod (19) is sleeved on the outer side of one end, far away from the motor (11), of the shaft core (20) penetrating through the transmission support assembly, second sliding grooves (32) are symmetrically formed in the threaded rod (19), the second sliding grooves (32) are formed in the sampling direction, ear plates (26) are symmetrically and fixedly connected to the outer side of the shaft core (20), two groups of ear plates (26) are correspondingly and slidingly connected in the two groups of second sliding grooves (32), one end, close to the shaft core (20), of the transmission needle core (23) is rotatably connected to the transmission support assembly, one end, far away from the motor (11), of the transmission support assembly is abutted against springs (38) between one end, close to the sampling end, in the fixed shell (3), of the springs (38) are sleeved on the outer side of the transmission needle core (23); the transmission bracket assembly comprises a threaded sleeve (16) which is sleeved on the outer side of the threaded rod (19), the edge of the threaded sleeve (16) is symmetrically and fixedly connected with a fixed connecting rod (18), two groups of fixed connecting rods (18) are fixedly connected with the same end of the motor (11) far away from the threaded rod (19), the gap is further formed between the fixed connecting rods and the threaded rod (19), a fixed circular ring (28) is fixedly sleeved on the outer side of one end of the transmission needle core (23) close to the shaft core (20), a threaded end cover (21) is sleeved on the outer side of the same end of the fixed connecting rod (18) close to the transmission needle core (23), the transmission needle core (23) penetrates through the center of the threaded end cover (21), the fixed circular ring (28) is positioned between the inner side of the threaded end cover (21) and the two groups of the fixed connecting rods (18), balls (27) are respectively matched between the fixed circular ring (28) and the inner side bottom wall of the threaded end cover (21) and the fixed connecting rods (18), and a plurality of balls (38) are respectively matched between the fixed circular ring (28) and the fixed circular ring and the fixed connecting rods (18), and the balls are abutted against one end of the fixed end cover (3) close to the threaded end cover (3).

Starting the motor (11) to rotate, driving the threaded rod (19) to rotate, driving the transmission support assembly and the sliding rod assembly to slide along the sampling direction, when the transmission support assembly moves to one end of the threaded rod (19) far away from the motor (11), the transmission support assembly is separated from a thread section of the threaded rod (19), the transmission support assembly and the threaded rod (19) rotate relatively, and the transmission support assembly does not move along the sampling direction any more along with the continuous rotation of the threaded rod (19) and the sliding rod assembly, and at the moment, the cutting edge (30) is driven to cut off a tumor block through the rotation of the sliding rod assembly.

2. The tumor sampling apparatus for facilitating tumor isolation according to claim 1, wherein: two sets of the deviating sides of fixed connecting rod (18) are respectively vertical fixedly connected with upper slide block (15) and lower slide block (17), upper slide block (15) are close to motor (11) setting, symmetry fixedly connected with fixed plate (34) in first cavity (10), two sets of first spout (24) have been seted up respectively to the opposite sides of fixed plate (34), all upper slide block (15) with lower slide block (17) are followed sample direction sliding connection in two sets of first spout (24).

3. The tumor sampling apparatus for facilitating tumor isolation according to claim 2, wherein: the puncture depth detection unit comprises a display screen (4) and a distance sensor (12), wherein the display screen (4) is fixedly connected to the outer side of one end, far away from the sampling end, of the fixed shell (3), the distance sensor (12) is fixedly connected to the first cavity (10), and the detection end of the distance sensor (12) is correspondingly arranged with a group of upper sliding blocks (15).