CN111904480A - Clinical biopsy sampling device that uses of medical oncology - Google Patents

Abstract

The invention relates to the technical field of biopsy sampling, in particular to a clinical biopsy sampling device for medical oncology, comprising a needle tube, a mounting block and a pull rod. A puncture head for puncturing tissue, the side of the needle tube close to the puncture head is provided with a cutting hole with an upward opening; the left side of the installation block is provided with a transition cavity, and the transition cavity is provided with a connection block; the right side of the connection block is provided A pull rod extending to the right outside the mounting block is provided, a holding block is provided at the end of the pull rod, and a spring is provided between the holding block and the mounting block. The invention can realize multiple sampling of the tissue at the cutting hole in one puncture process through the cutting hole, the cutting blade and the inclined groove, which reduces the operation difficulty of sampling, reduces the sampling time, and reduces the pain of the patient; Multiple sample tissues will not slip or be lost, ensuring continuous sampling.

Description

A clinical biopsy sampling device for medical oncology

technical field

The invention relates to the technical field of biopsy sampling, in particular to a clinical biopsy sampling device for medical oncology.

Background technique

Tumor is a disease that seriously endangers human health and life. In recent years, the incidence rate has gradually increased, and the age of onset has gradually decreased. Early detection, correct diagnosis, and timely treatment have an important impact on prognosis. With the continuous improvement of inspection methods and methods, the accuracy of diagnosis has gradually increased, but there are still a large number of tumors that do not have typical imaging characteristics, making diagnosis difficult. The correct diagnosis requires a combination of clinical, imaging and pathology. Among them, pathological diagnosis plays a key role in the choice of treatment plan. Needle biopsy is the main way to obtain pathological diagnosis.

Among them, the biopsy puncture sampling device is a special surgical instrument for puncture biopsy, and tumor tissue samples can be extracted through the biopsy puncture sampling device for pathological research. The prior art discloses a biopsy puncture needle set, the biopsy puncture needle includes a hollow outer needle and a puncture needle core axially penetrating the outer needle. The puncture needle core can reduce the puncture resistance for the needle group when it pierces the body. When the needle group is inserted into the center of the tumor tissue, the puncture needle core is taken out, and a syringe is connected to the needle plug of the outer needle, and the tumor tissue is extracted by using the syringe.

The above-mentioned biopsy puncture needle group is easy to spread to other parts of the human body due to the uncontrollable path of taking out the tumor tissue after sampling the outer needle. For tumors, the use of the above-mentioned biopsy needle group for direct sampling will cause the tumor tissue to rapidly spread to other parts of the human body, posing a great threat to the life of the patient.

Chinese patent (application number: 2015101008202) discloses a biopsy puncture sampling device, comprising: an operating handle, provided with a propulsion mechanism; a puncture needle set, connected to the propulsion mechanism and extending forward from the inside of the operating handle to the outside and a protective needle cover, detachably mounted on the front end of the operating handle and axially sleeved on the periphery of the puncture needle group; wherein, the puncture needle group has a hollow needle sheath and axially penetrates the needle sheath puncture needle core. The biopsy puncture sampling device is provided with a protective needle cover axially sleeved on the periphery of the puncture needle group at the front end of the operating handle. When using the biopsy puncture sampling device to perform a puncture biopsy operation, the puncture needle group can be prevented from being pulled out of the tumor tissue. Contact with other healthy parts of the human body, so as to avoid the spread of tumor tissue and reduce the threat to the patient's life. However, the above-mentioned device can only take one specimen at a time, and in conventional endoscopy, one lesion or one biopsy usually needs to take multiple specimens. Therefore, when using the above-mentioned device for sampling, multiple punctures are required, which is not only time-consuming and time-consuming. force, but also cause more harm to the patient.

Therefore, the present invention designs a clinical biopsy sampling device for medical oncology. Through the cutting hole, the cutting blade and the inclined groove, the tissue at the cutting hole can be sampled multiple times in one puncture process, which reduces the difficulty of sampling operation and reduces the sampling rate. time, thereby reducing the pain of patients; at the same time, it ensures that multiple sample tissues obtained by continuous sampling will not slip or be lost, and the effect of continuous sampling is guaranteed.

SUMMARY OF THE INVENTION

In order to make up for the deficiencies of the prior art and solve the problem that the existing biopsy puncture sampling device cannot achieve multiple sampling in one puncture process, the present invention proposes a clinical biopsy sampling device for medical oncology.

The technical solution adopted by the present invention to solve the technical problem is as follows: a clinical biopsy sampling device for medical oncology, comprising a needle tube, a mounting block and a pull rod, the right end of the needle tube is fixedly provided with the left side of the mounting block, and the left end of the needle tube is fixedly provided with a useful For the puncture head for puncturing tissue, the side of the needle tube close to the puncture head is provided with a cutting hole with an upward opening; the left side of the installation block is provided with a transition cavity, and the transition cavity is provided with a connection block; the right side of the connection block is provided The side is provided with a pull rod extending to the right to the outside of the mounting block, the end of the pull rod is provided with a holding block, a spring is arranged between the holding block and the mounting block, and the spring is sleeved outside the pull rod; the connecting block The left side is fixedly provided with a cutting blade extending into the needle tube, the cutting blade can move left and right in the needle tube and is provided with a cutting edge at its free end, and the inner side of the cutting blade on the side close to the cutting edge is provided with a right inclined groove; The side of the puncture head facing the cutting blade is correspondingly provided with a slot matching the cutting blade.

When in use, the biopsy puncture sampling device is used for puncture biopsy operation, the puncture head of the needle tube is pierced into the tissue through the installation block, and then pulled to the right to the pull rod, and the connecting block drives the cutting blade to move to the right, thereby opening the cutting hole. At this time, due to the elasticity of the tissue, part of the tissue will enter the needle tube from the cutting hole, and then squeeze the rod to the left to insert the cutting blade into the slot. During this process, the cutting blade of the cutting blade can cut the knife into the needle tube. The tissue of the needle can be collected to achieve a single biopsy sampling of a single puncture; pull the pull rod to the right again, due to the setting of the chute, the tissue sample entering the needle tube will expand and fit into the chute, and these chute will hook Hold the tissue sample and bring the tissue sample to the right side of the needle tube away from the cutting hole, and when the rod is pressed to the left again, the tissue sample will escape from the chute and stay in the right side of the needle tube, so that the cutting blade reciprocates in the needle tube Move multiple times to achieve multiple sampling of the tissue at the cutting hole during one puncture process, reducing the difficulty of sampling operations, reducing sampling time, and reducing patient pain; because the cut tissue samples can be stacked in sequence on the right side of the needle tube, ensuring that Multiple samples obtained by continuous sampling will not slip off or be lost, which ensures the effect of continuous sampling; in addition, because the tissue samples after cutting can be far away from the cutting hole, it will not hinder the subsequent tissue entering from the cutting hole, and avoid obstruction by tissue samples. The resulting tissue that is subsequently cut is small and does not meet the needs of use, and the tissue sample after cutting will no longer be in contact with other healthy parts of the human body during subsequent cutting, thereby avoiding the spread of tumor tissue that may be contained in the tissue sample. life-threatening patient.

Preferably, an ultrasonic actuator is provided on the left side of the installation block, and the output end of the ultrasonic actuator extends into the needle tube and interferes with the upper end surface of the cutting blade. The ultrasonic actuator can make the cutting blade move to the right with ultrasonic vibration of a specific frequency and amplitude during the piercing process, which can reduce the resistance of the cutting blade during the piercing process. Cracks are generated, so that the human tissue is very easy to break here, and the sampling accuracy is improved.

Preferably, a negative pressure tube is coaxially arranged in the needle tube, the negative pressure tube is provided with a plurality of first through holes spaced in the left and right direction at the position directly below the cutting hole, and the left end of the negative pressure tube is fixedly arranged on the On the puncture head, the right end of the negative pressure tube extends into the transition cavity and communicates with the transition cavity; the lower end of the mounting block is provided with an aspirator, and the upper end of the aspirator extends into the transition cavity and communicates with the transition cavity. A piston with a suction rod is arranged in the suction device. By pulling the piston with the draw rod, negative pressure can be generated in the transition cavity. Since the transition cavity is connected with the negative pressure pipe, negative pressure is also generated in the negative pressure pipe, and then negative pressure is generated at the cutting hole through the first through hole, which can not only cut the cutting hole, but also generate negative pressure. The human tissue around the hole is sucked into the needle tube, which avoids the situation that the tissue for subsequent cutting is small and does not meet the needs of use due to the obstruction of the tissue sample. In the aspirator, blood or tissue fluid can be prevented from contaminating the lesion and affecting the field of vision, and the accuracy of subsequent biopsy can be improved.

Preferably, the negative pressure tube is equipped with a rotating tube, and the rotating tube is provided with a plurality of baffles extending to the inner wall of the needle tube, the baffles are arranged in the left-right direction, and the space between the adjacent baffles constitutes a cutting cavity, each cutting cavity is provided with a set of cutting blades; the rotating tube in each cutting cavity is provided with a second through hole matching the first through hole; the right end of the needle tube is provided with a rotating plug, the The rotary plug is sleeved outside the negative pressure pipe, and the rotary plug is correspondingly provided with an insertion hole matched with the cutting blade. The cutting blade is rotated by rotating the holding block, and the rotating tube is driven to rotate by the cutting blade pressing and pushing the partition plate to complete the adjustment of the position of the cutting cavity, so that the cutting blade in one cutting cavity can be used to achieve a single cutting and rotate one Then use another cutting blade in the cutting cavity to achieve the second cutting and sampling, so as to achieve different puncture depths using different cutting blades, so as to avoid the tissue contaminated on the cutting blade and the human body when performing puncture sampling at different depths. contact with other healthy parts of the tissue sample, so as to avoid the spread of tumor tissue that may be contained in the tissue sample and reduce the threat to the patient's life; the rotary plug can position and assist the cutting blade to prevent the cutting blade from affecting the cutting effect due to excessive bending. .

Preferably, an arc-shaped plate is arranged between adjacent partitions, the arc-shaped plate is located between the cutting hole and the rotary plug, and the arc-shaped plate divides the cutting cavity on the right side of the cutting hole into an upper guide cavity and a lower part. The accommodating cavity is used for the guidance and auxiliary support of the cutting blade, and the accommodating cavity is used for accommodating the cut tissue. Through the setting of the arc-shaped plate, on the one hand, the guide cavity can be used for the guidance and auxiliary support of the cutting blade; , thus avoiding the situation that the sample tissue contacts the inner side of the cutting blade and increases the resistance of the cutting blade.

Preferably, a plurality of elastic protrusions are provided on the outer circumference of the negative pressure tube, and the elastic protrusions can be inserted into all the second through holes except the uppermost second through hole in a one-to-one correspondence. When pressed, it is separated from the corresponding second through hole. Since the state of the baffle in the needle tube is not visible, the positioning of the rotating tube can be achieved through the elastic protrusion without affecting the rotation of the rotating tube, so that when the elastic protrusion is inserted into the corresponding second through hole, the first through hole and the The uppermost second through hole is communicated, and the cutting hole is only communicated with the uppermost cutting cavity, so as to avoid the problem of affecting the cutting effect of the cutting blade due to inaccurate positioning.

Preferably, the side wall of the cutting hole is at least partially surrounded by a sharp blade-shaped edge, and the blade-shaped edge cooperates with the cutting edge of the cutting blade when cutting tissue. The blade-shaped edge can make the human tissue very easy to break here, and when it cooperates with the cutting edge of the cutting blade, the sample tissue can be easily cut, thereby improving the sampling accuracy.

The beneficial effects of the present invention are as follows:

1. A clinical biopsy sampling device for medical oncology according to the present invention, through the cutting hole, the cutting blade and the inclined groove, the tissue at the cutting hole can be sampled multiple times during one puncture process, which reduces the operational difficulty of sampling and reduces the The sampling time is reduced, thereby reducing the pain of the patient; at the same time, it ensures that multiple sample tissues obtained by continuous sampling will not slip or be lost, and the effect of continuous sampling is guaranteed.

2. A clinical biopsy sampling device for medical oncology according to the present invention uses different cutting blades to achieve different puncture depths through the partition, so as to avoid the tissue contaminated on the cutting blades being different from the human body when performing puncture sampling at different depths. Contact with other healthy parts, so as to avoid the spread of tumor tissue that may be contained in the tissue sample, and reduce the threat to the patient's life.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is the perspective view of the present invention;

Fig. 2 is the sectional view of the present invention;

Fig. 3 is the partial enlarged view of A place in Fig. 2;

Fig. 4 is the sectional view of the partition plate in the present invention;

Fig. 5 is the structural representation at the partition plate in the present invention;

Fig. 6 is a partial enlarged view at B in Fig. 2;

Fig. 7 is the sectional view of the rotary plug in the present invention;

In the picture:

1. Needle tube; 11. Cutting hole; 12. Needle; 13. Slot; 14. Rotary plug; 15. Jack; 2. Mounting block; 21. Ultrasonic actuator; 22. Transition cavity; 3. Aspirator ; 31, piston; 32, draw rod; 4, tie rod; 41, spring; 42, connecting plate; 5, negative pressure pipe; 51, first through hole; 52, elastic protrusion; 6, rotating pipe; 61, the first 2. Through holes; 7. Separator; 8. Curved plate; 9. Cutting sheet; 91. Chute.

Detailed ways

In order to make it easy to understand the technical means, creation features, achieved goals and effects of the present invention, the present invention will be further described below with reference to the specific embodiments.

As shown in FIGS. 1 to 7 , a clinical biopsy sampling device for medical oncology includes a needle tube 1 , a mounting block 2 and a pull rod 4 , the right end of the needle tube 1 is fixedly provided with the left side of the mounting block 2 , and the left end of the needle tube 1 is fixed A puncture head for puncturing tissue is provided, the needle tube 1 is provided with a cutting hole 11 with an upward opening on the side close to the puncture head; a transition cavity 22 is provided on the left side of the installation block 2, and a connection is provided in the transition cavity 22 The right side of the connecting block is provided with a pull rod 4 extending to the right outside the mounting block 2, the end of the pull rod 4 is provided with a holding block, and a spring 41 is provided between the holding block and the mounting block 2, The spring 41 is sheathed outside the pull rod 4; the left side of the connecting block is fixedly provided with a cutting piece 9 extending into the needle tube 1, the cutting piece 9 can move left and right in the needle tube 1 and its free end is provided with a cutting edge, The inner side of the cutting blade 9 on the side close to the cutting edge is provided with an inclined groove 91 inclined to the right;

When in use, the biopsy puncture sampling device is used to perform a puncture biopsy operation, the puncture head of the needle tube 1 is pierced into the tissue through the installation block 2, and then pulled to the right to the pull rod 4, and the cutting blade 9 is driven to move to the right through the connecting block, and then The cutting hole 11 is opened. At this time, due to the elasticity of the tissue, part of the tissue will enter the needle tube 1 from the cutting hole 11, and then squeeze the rod to the left to insert the cutting blade 9 into the slot 13. During this process, the cutting blade The cutting edge of 9 can cut the knife into the tissue in the needle tube 1, realizing a single biopsy sampling of a single puncture; pull the pull rod 4 to the right again, due to the setting of the oblique groove 91, the tissue sample entering the needle tube 1 will be removed. Expand and fit into the chutes 91, these chutes 91 will hook the tissue sample and carry the tissue sample away from the cutting hole 11 inside the right side of the needle tube 1, and when the rod is squeezed to the left again, the tissue sample will come off The oblique groove 91 stays in the right side of the needle tube 1, so that the cutting blade 9 reciprocates in the needle tube 1 for many times, and the tissue at the cutting hole 11 is sampled multiple times during one puncture process, which reduces the operational difficulty of sampling and reduces the Sampling time, thereby reducing the pain of the patient; because the cut tissue samples can be stacked in the right side of the needle tube 1 in turn, it ensures that multiple samples obtained by continuous sampling will not slip or be lost, and the effect of continuous sampling is guaranteed; The tissue sample can be kept away from the cutting hole 11, so it will not hinder the subsequent tissue entering from the cutting hole 11, avoiding the situation that the tissue sample to be subsequently cut is small and cannot meet the needs of use due to the obstruction of the tissue sample, and the tissue sample after cutting is in the subsequent cutting. It is also no longer in contact with other healthy parts of the human body, so as to avoid the spread of tumor tissue that may be contained in the tissue sample and reduce the threat to the patient's life.

As an embodiment of the present invention, an ultrasonic actuator 21 is provided on the left side of the installation block 2 , and the output end of the ultrasonic actuator 21 extends into the needle tube 1 and interferes with the upper end surface of the cutting blade 9 . The ultrasonic actuator 21 can make the cutting blade 9 move to the right with ultrasonic vibration of a specific frequency and amplitude during the piercing process, which can reduce the resistance of the cutting blade 9 during the piercing process. Cracks are generated in the cross section, so that the human tissue is very easy to break here, and the sampling accuracy is improved.

As an embodiment of the present invention, a negative pressure tube 5 is coaxially arranged in the needle tube 1 , and the negative pressure tube 5 is provided with a plurality of first through holes spaced in the left and right direction at the position directly below the cutting hole 11 . 51. The left end of the negative pressure tube 5 is fixed on the puncture head, and the right end of the negative pressure tube 5 extends into the transition cavity 22 and communicates with the transition cavity 22; the lower end of the installation block 2 is provided with an aspirator 3, and the The upper end of the aspirator 3 extends into the transition chamber 22 and communicates with the transition chamber 22 , and a piston 31 with a suction rod 32 is arranged in the aspirator 3 . Pulling the piston 31 by the drawer rod 32 can make the transition chamber 22 generate negative pressure. Since the transition chamber 22 is connected with the negative pressure pipe 5, negative pressure is also generated in the negative pressure pipe 5, and then the cutting hole 11 is made through the first through hole 51. Negative pressure is generated at the cutting hole 11, which can not only inhale the human tissue around the cutting hole 11 into the needle tube 1, avoid the situation that the subsequent cutting tissue is small and cannot meet the needs of use due to the obstruction of the tissue sample, and at the same time, it can reduce the blood or blood generated by cutting. The tissue fluid is discharged into the aspirator 3 through the negative pressure tube 5 and the transition cavity 22, so as to prevent blood or tissue fluid from contaminating the lesion and affecting the visual field, and improving the accuracy of subsequent biopsy.

As an embodiment of the present invention, the negative pressure tube 5 is covered with a rotating tube 6, and the rotating tube 6 is provided with a plurality of baffles 7 extending to the inner wall of the needle tube 1. The baffles 7 extend along the left and right The space between adjacent partitions 7 constitutes a cutting cavity, and each cutting cavity is provided with a set of cutting blades 9; the rotating tube 6 in each cutting cavity is provided with a matching first through hole 51. The second through hole 61 ; the right end of the needle tube 1 is provided with a rotary plug 14 , the rotary plug 14 is sleeved outside the negative pressure tube 5 , and the rotary plug 14 is correspondingly provided with an insertion hole 15 matching the cutting blade 9 . The cutting piece 9 is rotated by rotating the holding block, and the rotating tube 6 is driven to rotate by the cutting piece 9 pressing and pushing the partition plate 7 to complete the adjustment of the position of the cutting cavity, so that the cutting piece 9 in one cutting cavity can be used to achieve a single After the first cutting, rotate one station, and then use another cutting blade 9 in the cutting cavity to realize the second cutting sampling, so as to realize the different cutting blades 9 used for different puncture depths, so as to avoid the contaminated tissue on the cutting blade 9 in the When performing puncture and sampling at different depths, it is in contact with other healthy parts of the human body, so as to avoid the spread of tumor tissue that may be contained in the tissue sample and reduce the life-threatening threat to the patient; and the rotary plug 14 can position and assist the cutting blade 9. Support , to prevent the cutting blade 9 from affecting the cutting effect due to excessively long bending.

As an embodiment of the present invention, an arc-shaped plate 8 is provided between adjacent partitions 7, the arc-shaped plate 8 is located between the cutting hole 11 and the rotary plug 14, and the arc-shaped plate 8 cuts the cutting hole 11. The cutting cavity on the right side is divided into an upper guide cavity and a lower accommodating cavity, the guide cavity is used for the guidance and auxiliary support of the cutting blade 9, and the accommodating cavity is used for the storage of the cut tissue. Through the arrangement of the arc-shaped plate 8, on the one hand, the guide cavity can be used for the guidance and auxiliary support of the cutting blade 9; into the accommodating cavity, thus avoiding the situation that the sample tissue is in contact with the inner side of the cutting blade 9 to increase the resistance of the cutting blade 9 .

As an embodiment of the present invention, the negative pressure tube 5 is provided with a plurality of elastic protrusions 52 on the outer circumference, and the elastic protrusions 52 can be inserted into all the second through holes 61 except the uppermost second through hole 61 in a one-to-one correspondence. Through holes 61, the elastic protrusions 52 can be separated from the corresponding second through holes 61 when pressed. Since the state of the baffle 7 in the needle tube 1 is not visible, the positioning of the rotating tube 6 is realized through the elastic protrusion 52 without affecting the rotation of the rotating tube 6, thereby realizing that when the elastic protrusion 52 is inserted into the corresponding second through hole 61 At the same time, the first through hole 51 communicates with the uppermost second through hole 61 , and the cutting hole 11 only communicates with the uppermost cutting cavity, so as to avoid the problem of inaccurate positioning that affects the cutting effect of the cutting blade 9 .

As an embodiment of the present invention, the side wall of the cutting hole 11 is at least partially surrounded by a sharp blade-shaped edge, and the blade-shaped edge cooperates with the cutting edge of the cutting blade 9 when cutting tissue. The blade-shaped edge can make the human tissue very easy to break here, and when it cooperates with the cutting edge of the cutting blade 9, the sample tissue can be easily cut, thereby improving the sampling accuracy.

When in use, the biopsy puncture sampling device is used to perform a puncture biopsy operation, the puncture head of the needle tube 1 is pierced into the tissue through the installation block 2, and then pulled to the right to the pull rod 4, and the cutting blade is driven to move to the right through the connecting block, thereby making The cutting hole 11 is opened. At this time, due to the elasticity of the tissue, part of the tissue will enter the needle tube 1 from the cutting hole 11, and then press the rod to the left to insert the cutting blade into the slot 13. During this process, the cutting blade is cut. The blade can cut the knife into the tissue in the needle tube 1, realizing a single biopsy sampling for a single puncture; pull the pull rod 4 to the right again, due to the setting of the inclined groove, the tissue sample entering the needle tube 1 will expand and fit into the chutes, these chutes will hook the tissue sample and carry the tissue sample away from the cutting hole 11 into the right side of the needle tube 1, and when the rod is squeezed to the left again, the tissue sample will come out of the chutes and stay in the needle tube In the right side of 1, so that the cutting blade reciprocates in the needle tube 1 for many times, and the tissue at the cutting hole 11 is sampled multiple times during one puncture process, which reduces the operational difficulty of sampling and reduces the sampling time, thereby reducing the pain of the patient; Since the cut tissue samples can be stacked on the right side of the needle tube 1 in sequence, it is ensured that multiple samples obtained by continuous sampling will not slip off or be lost, and the effect of continuous sampling is ensured; Therefore, it will not hinder the subsequent tissue entering from the cutting hole 11, and avoid the situation that the tissue sample to be subsequently cut is small and does not meet the needs of use due to the obstruction of the tissue sample. Partial contact, so as to avoid the spread of tumor tissue that may be contained in the tissue sample, and reduce the threat to the patient's life; the ultrasonic actuator 21 can make the piercing process of the cutting blade move to the right accompanied by ultrasonic vibration of a specific frequency and amplitude, It can reduce the resistance of the cutting blade in the process of piercing, and at the same time, the vibration motion causes the cutting edge to create cracks in the cross section of the biopsy tissue, so that the human tissue is very easy to break here, and the sampling accuracy is improved; the piston 31 is pulled by the pump rod 32. , can make the transition cavity 22 generate negative pressure, because the transition cavity 22 is communicated with the negative pressure pipe 5, the negative pressure is also generated in the negative pressure pipe 5, and then through the first through hole to generate a negative pressure at the cutting hole 11, which can not only The human tissue around the cutting hole 11 is sucked into the needle tube 1, so as to avoid the situation that the tissue to be subsequently cut is small and cannot meet the needs of use due to the obstruction of the tissue sample, and at the same time, the blood or tissue fluid generated by the cutting can be passed through the negative pressure tube 5, transition The cavity 22 is discharged into the aspirator 3 to prevent blood or tissue fluid from contaminating the lesions and affecting the field of view, and improving the accuracy of subsequent biopsy; the cutting blade is rotated by rotating the holding block, and the cutting blade is squeezed to push the partition to drive the rotation. The tube rotates to complete the adjustment of the position of the cutting cavity, so that one station can be rotated after a single cutting with a cutting blade in the cutting cavity, and the second cutting sampling can be achieved by using another cutting blade in the cutting cavity, so as to achieve different Different cutting blades are used for different puncture depths to avoid puncturing of different depths of tissue contaminated on the cutting blades. When sampling, it is in contact with other healthy parts of the human body, so as to avoid the spread of tumor tissue that may be contained in the tissue sample, and reduce the threat to the patient's life; and the rotary plug 14 can position and assist the cutting blade. The long bending affects the cutting effect; through the setting of the arc plate, on the one hand, the guide cavity can be used for the guidance and auxiliary support of the cutting blade, and on the other hand, the cut sample tissue can be driven and squeezed by the chute of the cutting blade It is pressed into the accommodating cavity, thus avoiding the situation that the sample tissue is in contact with the inner side of the cutting blade and increases the resistance of the cutting blade; because the state of the baffle in the needle tube 1 is not visible, the elastic protrusion does not affect the rotating tube. In the case of rotation, the positioning of the rotating tube is realized, so that when the elastic protrusion is inserted into the corresponding second through hole, the first through hole is communicated with the uppermost second through hole, and the cutting hole 11 is only connected with the uppermost cutting cavity. Connected to avoid the problem of inaccurate positioning that affects the cutting effect of the cutting blade; the blade-shaped edge can make the human tissue very easy to break here, and when it cooperates with the cutting blade of the cutting blade, it can easily cut off the sample tissue, thereby improving the sampling accuracy. .

The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have Various changes and modifications fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. A clinical biopsy sampling device for medical oncology, characterized in that it comprises a needle tube (1), a mounting block (2) and a pull rod (4), the right end of the needle tube (1) being fixedly provided with the left side of the mounting block (2) The left end of the needle tube (1) is fixedly provided with a puncture head for puncturing tissue, and the side of the needle tube (1) close to the puncture head is provided with a cutting hole (11) with an upward opening; A transition cavity (22) is provided, and a connecting block is arranged in the transition cavity (22); ) end is provided with a holding block, a spring (41) is provided between the holding block and the mounting block (2), the spring (41) is sleeved outside the pull rod (4); the left side of the connecting block is fixed A cutting piece (9) extending into the needle tube (1) is provided, the cutting piece (9) can move left and right in the needle tube (1) and a cutting edge is provided at its free end, and the cutting piece (9) on the side close to the cutting edge 9) An inclined groove (91) inclined to the right is provided on the inner side; the side of the puncture head facing the cutting sheet (9) is correspondingly provided with a slot (13) matching the cutting sheet (9). 2 . The clinical biopsy sampling device for medical oncology according to claim 1 , wherein an ultrasonic actuator ( 21 ) is provided on the left side of the mounting block ( 2 ), and the ultrasonic actuator ( 21 ). 3 . The output end of ) extends into the needle tube (1) and collides with the upper end face of the cutting blade (9). 3. A clinical biopsy sampling device for medical oncology according to claim 2, wherein a negative pressure tube (5) is coaxially arranged in the needle tube (1), and the negative pressure tube (5) is located in the A plurality of first through holes (51) spaced along the left and right directions are provided directly below the cutting hole (11), the left end of the negative pressure tube (5) is fixedly arranged on the puncture head, and the negative pressure tube (5) The right end extends into the transition cavity (22) and communicates with the transition cavity (22); the lower end of the mounting block (2) is provided with a suction device (3), and the upper end of the suction device (3) extends to the transition cavity (22) The interior is communicated with the transition chamber (22), and the suction device (3) is provided with a piston (31) with a suction rod (32). 4. A clinical biopsy sampling device for medical oncology according to claim 3, wherein the negative pressure tube (5) is covered with a rotary tube (6), and the rotary tube (6) is provided with a A plurality of partitions (7) extending to the inner wall of the needle tube (1), the partitions (7) are arranged in the left-right direction, the space between adjacent partitions (7) constitutes a cutting cavity, and each cutting cavity is A set of cutting blades (9) are provided; the rotating tube (6) in each cutting cavity is provided with a second through hole (61) matching the first through hole (51); the right end of the needle tube (1) is provided with There is a rotary plug (14), the rotary plug (14) is sleeved outside the negative pressure pipe (5), and an insertion hole (15) matching the cutting blade (9) is correspondingly provided on the rotary plug (14). 5. A clinical biopsy sampling device for medical oncology according to claim 4, characterized in that an arc-shaped plate (8) is arranged between adjacent partitions (7), and the arc-shaped plate (8) is located at the Between the cutting hole (11) and the rotary plug (14), the arc-shaped plate (8) divides the cutting cavity on the right side of the cutting hole (11) into an upper guide cavity and a lower accommodating cavity. For the guidance and auxiliary support of the cutting blade (9), the accommodating cavity is used for accommodating the cut tissue. 6. A clinical biopsy sampling device for medical oncology according to claim 5, wherein a plurality of elastic protrusions (52) are provided on the periphery of the negative pressure tube (5), and the elastic protrusions (52) ) can be inserted into all the second through holes (61) except the uppermost second through hole (61) in a one-to-one correspondence, and the elastic protrusions (52) can be separated from the corresponding second through holes (61) under pressure ). 7. A clinical biopsy sampling device for medical oncology according to claim 6, characterized in that the side wall of the cutting hole (11) is at least partially surrounded by a sharp blade-shaped edge, and the blade-shaped edge Cooperates with the cutting edge of the cutting blade (9) when cutting tissue.

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