Neurosurgery tumor specimen preparation device

Abstract

The invention discloses a neurosurgery tumor specimen preparation device, and relates to the technical field of tumor cell specimen preparation and sampling, the neurosurgery tumor specimen preparation device comprises an outer needle tube and an inner needle tube used for neurosurgery tumor specimen preparation and sampling, and the outer needle tube and the inner needle tube are both provided with front ends and rear ends; the front end of the inner needle tube is conical, and the outer side edge of the inner needle tube is subjected to sharpness treatment. In the process of sampling and preparing a tumor specimen by using the outer needle tube and the inner needle tube in the neurosurgery department, the rotating speed of the inner needle tube can be automatically adjusted according to the texture hardness of a sampled tumor tissue through transmission, so that the situation that when the tumor with soft texture is cut off and sampled in the neurosurgery department, the tumor tissue cannot be damaged can be avoided; tumor cells are broken by shearing force generated by high-speed rotation of the inner needle tube, and the inner needle tube can be effectively screwed into tumor tissues when a hard tumor is sampled, so that effective sampling and collecting operation of the tumor cells is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of tumor cell specimen preparation and sampling, and specifically to a device for preparing neurosurgical tumor specimens. Background Art

[0002] Tumors are a large class of complex diseases, including various tissue origins and cell types, such as carcinomas derived from epithelial tissues, sarcomas derived from mesenchymal tissues, etc. To facilitate the pathological diagnosis of tumors, tumor specimens can be prepared through a specimen preparation device, and the morphology, size, nuclear-cytoplasmic ratio, cell arrangement mode, etc. of tumor cells can be observed under a microscope, so as to accurately judge the type of tumor.

[0003] During the process of preparing tumor specimens using a specimen preparation device, the cooperation of an outer needle tube and an inner needle tube is required to prepare and sample tumor cells. During the sampling process, the position of the tumor is located based on preoperative images and intraoperative navigation, the lighting and camera are activated for auxiliary confirmation, the outer needle tube is aligned with the tumor, and the outer needle tube is advanced until it touches the surface of the tumor. Then, the inner needle tube is used to pierce the capsule, and then the rotation and advancement actions of the inner needle tube are started to obtain a tumor tissue sample like a drill biopsy.

[0004] For tumors in neurosurgery, the texture of some tumors has deviations in softness and hardness (for example, gliomas, medulloblastomas, and germ cell tumors are softer in texture, while meningiomas, acoustic neuromas, and craniopharyngiomas are harder). During the process of obtaining tumor tissue samples by rotating the inner needle tube, the rotation speed of the inner needle tube cannot be adjusted automatically according to the softness and hardness of the tumor tissue. When using a higher rotation speed for rotational sampling of some softer tumor tissues, the tumor cells will be broken due to the shear force generated by the high-speed rotation, affecting the sampling operation during the preparation of tumor cell specimens. Therefore, we propose a device for preparing neurosurgical tumor specimens. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for preparing neurosurgical tumor specimens to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A device for preparing neurosurgical tumor specimens includes an outer needle tube and an inner needle tube for preparing and sampling neurosurgical tumor specimens. The outer needle tube and the inner needle tube are both provided with a front end and a rear end. The front end of the inner needle tube is conical, and the outer edge of the inner needle tube is processed for sharpness. The device further includes: A collection component arranged on the outer needle tube for collecting tumor tissues during the sampling process; A connecting tube fixedly connected to the rear end of the outer needle tube. The connecting tube is detachably connected to an operation cylinder by means of a thread. An installation component for installing and connecting the inner needle tube is arranged on the operation cylinder. The installation component includes a first circular plate and a second circular plate arranged inside the operating cylinder. A first telescopic component for assisting telescopic connection is arranged between the first circular plate and the second circular plate. The rear end of the inner needle tube is fixedly centered on one side of the second circular plate. A resistance component for generating resistance during the pushing and rotating of the inner needle tube is arranged on the second circular plate. A transmission component for driving the first circular plate is arranged on the operating cylinder. An adjustment component for adjusting the resistance on the resistance component is arranged between the first circular plate and the second circular plate.

[0007] Preferably, multiple groups of the resistance components are provided, and the multiple groups of resistance components are arranged in an annular array on the second circular plate.

[0008] Preferably, the resistance component includes a slotted opening formed on the second circular plate. An installation block is arranged on the slotted opening. A second telescopic component for telescopically connecting the installation block is arranged on the slotted opening. A friction rod is fixed on the installation block. The front end of the friction rod is hemispherical and abuts against the inside of the operating cylinder under the push of the second telescopic component.

[0009] Preferably, the second telescopic component includes multiple groups of first sleeves fixed inside the slotted opening. A first sliding rod is slidably connected to each group of the first sleeves. One end of the first sliding rod is fixed to the installation block. A first spring is sleeved outside the first sleeve. The two ends of the first spring respectively abut against the inner wall of the slotted opening and the installation block.

[0010] Preferably, the first telescopic component includes multiple groups of second sleeves fixed on the second circular plate. A second sliding rod is slidably connected to the second sleeves. One end of the second sliding rod is fixed to the first circular plate. A second spring is sleeved outside the second sleeve. The two ends of the second spring respectively abut against the first circular plate and the second circular plate.

[0011] Preferably, the adjustment component includes a strip-shaped plate fixed on the installation block. Two groups of transmission plates are symmetrically fixed on the side of the first circular plate facing the second circular plate. The strip-shaped plate is located between the two groups of transmission plates. Oblique slots are formed on the two groups of transmission plates. A transmission rod is fixed on the strip-shaped plate. The transmission rod is slidably connected to the oblique slots.

[0012] Preferably, the transmission component includes a push rod slidably connected to the end of the operating cylinder. One end of the push rod is located inside the operating cylinder and is fixed to the first circular plate. The other end of the push rod is located outside the operating cylinder and is fixed with a push pin.

[0013] Preferably, the collection component includes an annular collection bin, an installation cylinder is fixed to the front end of the annular collection bin, a plurality of hollow holes are formed in the outer needle tube, and the hollow holes are arranged in a state of annular array on the outer needle tube. One end of each hollow hole communicates with the front end of the outer needle tube, a ring-shaped installation groove is formed at the rear end of the outer needle tube, and the other end of each hollow hole communicates with the inside of the ring-shaped installation groove. The installation cylinder and the ring-shaped installation groove are detachably installed and connected by means of threads, and after the installation cylinder is installed on the ring-shaped installation groove, the annular collection bin is sleeved on the outside of the connecting tube. A pumping and pressing component for assisting collection is arranged on the annular collection bin.

[0014] Preferably, the pumping and pressing component includes a positioning groove formed at the end of the annular collection bin. A plurality of filtering through holes are formed between the positioning groove and the annular collection bin in communication. A pumping and pressing fan for pumping and pressing the inside of each filtering through hole is installed inside the positioning groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: In the process of sampling and preparing tumor specimens by using the outer needle tube and the inner needle tube in the field of neurosurgery in the present invention, through transmission, the rotation speed of the inner needle tube can be automatically adjusted according to the softness and hardness of the sampled tumor tissue, which can not only avoid the fragmentation of tumor cells caused by the shearing force generated by the high-speed rotation of the inner needle tube when cutting and sampling tumors with relatively soft texture in neurosurgery, but also enable the inner needle tube to effectively screw into the inside of the tumor tissue when sampling tumors with relatively hard texture, ensuring the effective sampling and collection operation of tumor cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall external structure of the present invention; Figure 2 is a schematic diagram of the state after the annular collection bin and the operation cylinder of the present invention are installed; Figure 3 is a schematic diagram of the state after the annular collection bin and the outer needle tube of the present invention are installed; Figure 4 is a schematic diagram of the structure of the collection component of the present invention; Figure 5 is a schematic diagram of the structure of the outer needle tube of the present invention; Figure 6 is a schematic diagram of the structure of the annular collection bin and the pumping and pressing component of the present invention; Figure 7 is a schematic diagram of the positional relationship between the inner needle tube and the operation cylinder of the present invention; Figure 8 is a schematic diagram of the structure of the resistance component and the second telescopic component of the present invention; Figure 9 is a schematic diagram of the structure of the first circular plate, the second circular plate and the first telescopic component of the present invention; Figure 10 Schematic structural diagram of the adjustment component of the present invention; Figure 11 Schematic diagram of the process of adjusting the resistance of the resistance component by the adjustment component of the present invention; Figure 12 Schematic diagram of the contraction movement direction of each resistance component of the present invention after being adjusted.

[0017] In the figure: 101 - outer needle tube; 102 - inner needle tube; 201 - hollow hole; 202 - annular installation groove; 203 - annular collection bin; 204 - installation cylinder; 301 - positioning groove; 302 - filtering through hole; 303 - suction and pressure fan; 4 - connecting pipe; 5 - operation cylinder; 601 - first circular plate; 602 - second circular plate; 701 - second sleeve; 702 - second sliding rod; 703 - second spring; 801 - slot; 802 - installation block; 803 - friction rod; 901 - first sleeve; 902 - first sliding rod; 903 - first spring; 1001 - strip plate; 1002 - transmission plate; 1003 - inclined groove; 1004 - transmission rod; 1101 - push rod; 1102 - push pin. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part 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 making creative efforts belong to the scope of protection of the present invention.

[0019] Embodiment 1, please refer to Figures 1 - 12 , a neurosurgical tumor specimen preparation device shown in the figure, including an outer needle tube 101 and an inner needle tube 102 for sampling in the preparation of neurosurgical tumor specimens. Both the outer needle tube 101 and the inner needle tube 102 are provided with a front end and a rear end. The front end of the inner needle tube 102 is conical, and the outer edge of the inner needle tube 102 is processed for sharpness; It should be noted here that: by processing the outer edge of the inner needle tube 102 for sharpness, the front edge of the needle tube is as sharp as a blade. From a microscopic perspective, the radius of its cutting edge is very small, possibly reaching the micron level. Such a sharp cutting edge can penetrate or cut into an object under a small pressure, just like a sharp knife can easily cut paper. The sharp needle tube edge can more easily pierce the tumor capsule. During the pushing process, the sharp edge is like a micro tool and can produce a cutting effect on the tumor tissue. When the inner needle tube 102 rotates, this cutting effect will be more obvious because the rotational movement enables the sharp edge to contact and cut the tissue from different angles; It further includes: A collection component arranged on the outer needle tube 101 for collecting tumor tissues during the sampling process; A connecting tube 4 fixedly connected to the rear end of the outer needle tube 101 in communication. An operating cylinder 5 is detachably connected to the connecting tube 4 by means of a thread. An installation component for installing and connecting the inner needle tube 102 is arranged on the operating cylinder 5; The installation component includes a first circular plate 601 and a second circular plate 602 arranged inside the operating cylinder 5. A first telescopic component for auxiliary telescopic connection is arranged between the first circular plate 601 and the second circular plate 602. The rear end of the inner needle tube 102 is fixedly centered on one side of the second circular plate 602. A resistance component for generating resistance during the pushing and rotating of the inner needle tube 102 is arranged on the second circular plate 602. A transmission component for driving the first circular plate 601 is arranged on the operating cylinder 5. An adjustment component for adjusting the resistance on the resistance component is arranged between the first circular plate 601 and the second circular plate 602; It should be noted here that: during the process of sampling and preparing tumor specimens by using the outer needle tube 101 and the inner needle tube 102 in neurosurgery, through transmission, the rotation speed of the inner needle tube 102 can be independently adjusted according to the softness and hardness of the sampled tumor tissue. This can not only avoid the fragmentation of tumor cell tissues caused by the shearing force generated by the high-speed rotation of the inner needle tube 102 when cutting and sampling soft tumors in neurosurgery, but also enable the inner needle tube 102 to effectively screw into the interior of the tumor tissue when sampling hard tumors, ensuring effective sampling and collection operations of tumor cells.

[0020] Preferably, multiple groups of resistance components are arranged, and the multiple groups of resistance components are arranged in a circular array state on the second circular plate 602; It should be noted here that: by arranging multiple groups of resistance components in a circular array state, the resistance effect is ensured.

[0021] Preferably, the resistance component includes a slot 801 opened on the second circular plate 602. An installation block 802 is arranged on the slot 801. A second telescopic component for telescopically connecting the installation block 802 is arranged on the slot 801. A friction rod 803 is fixed on the installation block 802. The front end of the friction rod 803 is hemispherical and abuts against the inside of the operating cylinder 5 under the push of the second telescopic component; It should be noted here that during the process of cutting the tumor tissue by pushing and rotating the second circular plate 602 and the inner needle tube 102, as the second circular plate 602 rotates and is pushed, through the elastic extrusion of the second telescopic component on the mounting block 802, the front end of the friction rod 803 on the mounting block 802 always abuts against the inner side wall of the operation cylinder 5. Through the abutting action, a frictional resistance is generated to the pushing and rotation of the second circular plate 602 and the inner needle tube 102, avoiding the fragmentation of tumor cells caused by the shearing force generated by the high-speed rotation of the inner needle tube 102 when cutting and sampling a tumor with soft texture in neurosurgery.

[0022] Preferably, the second telescopic component includes multiple groups of first sleeves 901 fixed inside the slot 801. A first sliding rod 902 is slidably connected to each group of first sleeves 901. One end of the first sliding rod 902 is fixed to the mounting block 802. A first spring 903 is sleeved outside the first sleeve 901, and both ends of the first spring 903 are respectively abutted against the inner wall of the slot 801 and the mounting block 802; It should be noted here that through the first sleeve 901 and the first sliding rod 902, it is convenient to telescopically guide and connect the mounting block 802. Through the first spring 903, it is convenient for the mounting block 802 to return after the contraction movement.

[0023] Preferably, the first telescopic component includes multiple groups of second sleeves 701 fixed on the second circular plate 602. A second sliding rod 702 is slidably connected to the second sleeve 701. One end of the second sliding rod 702 is fixed to the first circular plate 601. A second spring 703 is sleeved outside the second sleeve 701, and both ends of the second spring 703 are respectively abutted against the first circular plate 601 and the second circular plate 602; It should be noted here that through the second sleeve 701 and the second sliding rod 702, it is convenient for the telescopic connection between the first circular plate 601 and the second circular plate 602. Through the second spring 703, it is convenient for the first circular plate 601 and the second circular plate 602 to return after the relative contraction movement.

[0024] Preferably, the adjusting component includes a strip-shaped plate 1001 fixed on the mounting block 802. Two groups of transmission plates 1002 are symmetrically fixed on the side of the first circular plate 601 facing the second circular plate 602. The strip-shaped plate 1001 is located between the two groups of transmission plates 1002. Oblique slots 1003 are formed on the two groups of transmission plates 1002. A transmission rod 1004 is fixed on the strip-shaped plate 1001, and the transmission rod 1004 is slidably connected to the oblique slots 1003; It should be noted here that: through transmission, the first circular plate 601 moves towards the second circular plate 602 and contracts. During the movement, through the interaction between the inclined groove 1003 on the transmission plate 1002 and the transmission rod 1004 on the strip plate 1001, the friction rods 803 on each group of resistance components are forced to move towards the inside of the slotted opening 801 and contract. Through the contraction movement of the friction rods 803, the resistance of the resistance components to the rotation and pushing of the second circular plate 602 and the inner needle tube 102 is reduced.

[0025] Preferably, the transmission assembly includes a push rod 1101 slidably connected to the end of the operation cylinder 5. One end of the push rod 1101 is located inside the operation cylinder 5 and is fixed to the first circular plate 601, and the other end of the push rod 1101 is located outside the operation cylinder 5 and is fixed with a push pin 1102; It should be noted here that: through the push rod 1101 and the push pin 1102, it is convenient to push and rotate the first circular plate 601.

[0026] Preferably, the collection assembly includes an annular collection bin 203. The front end of the annular collection bin 203 is fixed with an installation cylinder 204. A plurality of groups of hollow holes 201 are formed on the outer needle tube 101. Each group of hollow holes 201 is arranged in a state of annular array on the outer needle tube 101. One end of the hollow hole 201 communicates with the front end of the outer needle tube 101. The rear end of the outer needle tube 101 is provided with an annular installation groove 202. The other end of each group of hollow holes 201 communicates with the inside of the annular installation groove 202. The installation cylinder 204 and the annular installation groove 202 are detachably installed and connected by means of threads, and after the installation cylinder 204 is installed on the annular installation groove 202, the annular collection bin 203 is sleeved on the outside of the connecting pipe 4. The annular collection bin 203 is provided with a suction and pressure component for assisting collection; It should be noted here that: the annular collection bin 203 is installed and fixed to the rear end of the outer needle tube 101 through the threaded cooperation between the installation cylinder 204 and the annular installation groove 202. Through the installation of the annular collection bin 203, it is convenient to collect the cut tumor cells, and through the subsequent disassembly of the annular collection bin 203, it is convenient to take out the collected tumor cells.

[0027] Preferably, the suction and pressure component includes a positioning groove 301 opened at the end of the annular collection bin 203. A plurality of groups of filtering through holes 302 are opened between the positioning groove 301 and the annular collection bin 203. A suction and pressure fan 303 for suction and pressure inside each group of filtering through holes 302 is installed inside the positioning groove 301; It should be noted here that during the process of rotating and cutting the tumor tissue, through the suction and pressure effects of the suction and pressure fan 303 and the connection effects of each group of filter through-holes 302, suction and pressure operations are performed on the inside of the annular collection bin 203 and each group of hollow holes 201. During the suction and pressure process, due to the pressure effect, the cut tumor tissue is adsorbed into the inside of the annular collection bin 203 through each group of hollow holes 201 for collection, thus completing the sampling and preparation operation of the tumor.

[0028] In this solution: A neurosurgical tumor specimen preparation device includes the following steps: During the process of sampling and preparing a tumor specimen by using the outer needle tube 101 and the inner needle tube 102 in neurosurgery, the annular collection bin 203 is installed and fixed at the rear end of the outer needle tube 101 through the threaded fit between the installation cylinder 204 and the annular installation groove 202. After the annular collection bin 203 is installed, the operation cylinder 5 and the connecting pipe 4 are assembled and installed by threading. During the installation of the operation cylinder 5, the front end of the inner needle tube 102 on the operation cylinder 5 passes through the connecting pipe 4 and is located inside the outer needle tube 101; After the annular collection bin 203 and the operation cylinder 5 are assembled, based on the preoperative imaging and intraoperative navigation to locate the tumor position, the lighting and camera are activated for auxiliary confirmation. The outer needle tube 101 is aligned with the tumor and pushed towards the tumor. During the pushing process, the front end of the outer needle tube 101 contacts and abuts against the surface of the tumor. After the pushing of the outer needle tube 101 is completed, the operator, through the actions of the push rod 1101 and the push pin 1102, pushes the first circular plate 601 towards the tumor and rotates the first circular plate 601 while it is moving. During the movement of the first circular plate 601, through the connection and transmission action of the first telescopic assembly, the second circular plate 602 and the inner needle tube 102 on the second circular plate 602 are also driven to move and rotate towards the tumor, so that the front end of the inner needle tube 102 pierces the tumor capsule and is pushed into and rotated towards the inside of the tumor. Because the edge of the inner needle tube 102 has been finely processed and has a high sharpness, during the process of the inner needle tube 102 being pushed and rotated, the edge of the inner needle tube 102 makes a circular motion around the central axis. This circular motion causes the edge to continuously cut into the tumor tissue, just like a rotating drill bit. For the tumor tissue, the rotation of the inner needle tube 102 will generate a circumferential shear force. Since the internal cell and fiber structures of the tumor tissue are difficult to remain intact under the action of this shear force, they will be gradually cut off. And during the process of rotating and cutting the tumor cells, through the suction and pressure effects of the suction and pressure fan 303 and the connection effects of each group of filter through-holes 302, suction and pressure operations are performed on the inside of the annular collection bin 203 and each group of hollow holes 201. During the suction and pressure process, due to the pressure effect, the cut tumor cells are adsorbed into the inside of the annular collection bin 203 through each group of hollow holes 201 for collection, thus completing the sampling and preparation operation of the tumor cells; During the process of cutting the tumor tissue by pushing and rotating the second circular plate 602 and the inner needle tube 102, with the rotation and pushing of the second circular plate 602, through the elastic extrusion of the second telescopic component on the mounting block 802, the front end of the friction rod 803 on the mounting block 802 always abuts against the inner side wall of the operation cylinder 5. Through the abutting action, a frictional resistance is generated against the pushing and rotation of the second circular plate 602 and the inner needle tube 102, avoiding the fragmentation of tumor cells caused by the shearing force generated by the high-speed rotation of the inner needle tube 102 when cutting and sampling a tumor with soft texture in neurosurgery. When cutting and sampling a tumor with relatively hard texture in neurosurgery by pushing and rotating the inner needle tube 102, due to the hardness of the tumor itself, a large resistance will be generated against the rotation of the inner needle tube 102. Under the resistance action of the tumor against the insertion of the inner needle tube 102 and the continuous pushing action of the operator on the first circular plate 601, the first circular plate 601 moves towards the second circular plate 602 in a contracting motion. During the contracting motion, through the transmission action of the adjustment component (see Figure 11 for the transmission process), the friction rods 803 on each resistance component are forced to move towards the inside of the slot 801 in a contracting motion (see Figure 12 ). Through the contracting motion of the friction rod 803, the resistance of the resistance component to the rotation and pushing of the second circular plate 602 and the inner needle tube 102 is reduced, enabling the inner needle tube 102 to effectively screw into the interior of the tumor cells when sampling a tumor with relatively hard texture, ensuring effective sampling and collection operations.

[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preparing a neurosurgical tumor specimen, comprising: An outer needle tube (101) and an inner needle tube (102) for sampling in the preparation of a neurosurgical tumor specimen. Both the outer needle tube (101) and the inner needle tube (102) are provided with a front end and a rear end. The front end of the inner needle tube (102) is conically arranged, and the outer edge of the inner needle tube (102) is processed for sharpness. It is characterized in that it further comprises: A collection component arranged on the outer needle tube (101) for collecting tumor tissue during the sampling process; A connecting tube (4) fixedly connected to the rear end of the outer needle tube (101). An operation cylinder (5) is detachably connected to the connecting tube (4) by means of a thread. An installation component for installing and connecting the inner needle tube (102) is arranged on the operation cylinder (5); The installation component includes a first circular plate (601) and a second circular plate (602) arranged inside the operation cylinder (5). A first telescopic component for auxiliary telescopic connection is arranged between the first circular plate (601) and the second circular plate (602). The rear end of the inner needle tube (102) is centrally fixed to one side of the second circular plate (602). A resistance component for generating resistance during the pushing and rotation of the inner needle tube (102) is arranged on the second circular plate (602). A transmission component for driving the first circular plate (601) is arranged on the operation cylinder (5). An adjustment component for adjusting the resistance on the resistance component is arranged between the first circular plate (601) and the second circular plate (602).

2. The preparation device for neurosurgical tumor specimens according to claim 1, characterized in that: Multiple groups of the resistance components are provided, and the multiple groups of resistance components are arranged in a circular array state on the second circular plate (602).

3. The a neurosurgical tumor specimen preparation device according to claim 2, characterized in that: The resistance component includes a slot (801) opened on the second circular plate (602). An installation block (802) is arranged on the slot (801). A second telescopic component for telescopically connecting the installation block (802) is arranged on the slot (801). A friction rod (803) is fixed on the installation block (802). The front end of the friction rod (803) is hemispherical and abuts against the inside of the operation cylinder (5) under the push of the second telescopic component.

4. A neurosurgical tumor specimen preparation device according to claim 3, characterized in that: The second telescopic component includes multiple groups of first sleeves (901) fixed inside the slot (801). A first sliding rod (902) is slidably connected to each group of the first sleeves (901). One end of the first sliding rod (902) is fixed to the installation block (802). A first spring (903) is sleeved outside the first sleeve (901). The two ends of the first spring (903) are respectively abutted against the inner wall of the slot (801) and the installation block (802).

5. A neurosurgical tumor specimen preparation device according to claim 4, characterized in that: The first telescopic component includes multiple groups of second sleeves (701) fixed on the second circular plate (602). A second sliding rod (702) is slidably connected to the second sleeves (701). One end of the second sliding rod (702) is fixed to the first circular plate (601). A second spring (703) is sleeved outside the second sleeve (701). The two ends of the second spring (703) are respectively abutted against the first circular plate (601) and the second circular plate (602).

6. The preparation device for neurosurgical tumor specimens according to claim 5, characterized in that: The adjusting assembly includes a strip-shaped plate (1001) fixed to the mounting block (802). On one side of the first circular plate (601) facing the second circular plate (602), two groups of transmission plates (1002) are symmetrically fixed. The strip-shaped plate (1001) is located between the two groups of transmission plates (1002). Oblique slots (1003) are formed in the two groups of transmission plates (1002). A transmission rod (1004) is fixed to the strip-shaped plate (1001), and the transmission rod (1004) is slidably connected to the oblique slots (1003).

7. A device for preparing a neurosurgical tumor specimen according to claim 5, characterized in that: The transmission assembly includes a push rod (1101) slidably connected to the end of the operating cylinder (5). One end of the push rod (1101) is located inside the operating cylinder (5) and is fixed to the first circular plate (601). The other end of the push rod (1101) is located outside the operating cylinder (5) and is fixed with a push pin (1102).

8. A device for preparing a neurosurgical tumor specimen according to claim 1, characterized in that: The collection assembly includes an annular collection bin (203). The front end of the annular collection bin (203) is fixed with an installation cylinder (204). A plurality of groups of hollow holes (201) are formed in the outer needle tube (101). The groups of hollow holes (201) are arranged in a state of annular array on the outer needle tube (101). One end of the hollow hole (201) communicates with the front end of the outer needle tube (101). An annular installation groove (202) is formed at the rear end of the outer needle tube (101). The other end of each group of hollow holes (201) communicates with the inside of the annular installation groove (202). The installation cylinder (204) and the annular installation groove (202) are detachably installed and connected by means of threads. After the installation cylinder (204) is installed on the annular installation groove (202), the annular collection bin (203) is sleeved on the outside of the connecting pipe (4). A pumping and pressing assembly for assisting collection is provided on the annular collection bin (203).

9. A device for preparing a neurosurgical tumor specimen according to claim 8, characterized in that: The pumping and pressing assembly includes a positioning groove (301) formed at the end of the annular collection bin (203). A plurality of groups of filtering through holes (302) are formed between the positioning groove (301) and the annular collection bin (203) in a communicating manner. A pumping and pressing fan (303) for pumping and pressing the inside of each group of filtering through holes (302) is installed inside the positioning groove (301).

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