Tumor sampling device for medical oncology

Abstract

The invention belongs to the technical field of sampling devices, and particularly relates to a tumor sampling device for medical oncology, which comprises a clamping device, the clamping device comprises a handle section, a bending section integrally formed with the handle section, and a clamping section integrally formed with the bending section, and the clamping section is sleeved with a disposable sheath. A protection pad is installed on the handle section, and one end of the handle section is fixedly connected with a connecting block. In the aspect of accurate sampling, the bending section of the clamping device is attached to the anatomical structure of the human body, a tumor can be accurately positioned, a disposable sheath can protect a sample, the sampling accuracy is greatly improved, in the operation performance, a handle protection pad relieves hand fatigue of medical workers, a hanging ring is convenient to store and take, and a limiting rebound device enables clamping operation to be convenient and efficient; compared with a traditional tool, the device effectively overcomes the defects of the traditional sampling tool, and the accuracy, safety and convenience of tumor sampling are powerfully guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of sampling devices, in particular to a tumor sampling device used in oncology. Background Art

[0002] In the clinical diagnosis and treatment of oncology, accurate acquisition of tumor tissue samples plays a vital role in the diagnosis, staging and subsequent treatment of the disease. Traditional tumor sampling tools often have many limitations and are difficult to meet the growing medical needs.

[0003] Some previous sampling forceps had simple and crude structural designs, and usually did not fully consider the complexity of the human anatomy. For example, the bending angle did not fit the surgical approach, making it difficult for medical staff to accurately reach the tumor site during operation. This not only increased the difficulty of operation, but also easily touched the surrounding healthy tissue by mistake, causing unnecessary damage, bringing additional pain to patients, and prolonging postoperative recovery time.

[0004] Furthermore, most traditional tools lack effective protective measures during the sample clamping process. Direct metal contact clamping can easily cause mechanical damage such as squeezing and tearing to fragile tumor tissue, destroying the integrity of tissue cells, and thus affecting the accuracy of pathological test results. Moreover, the problem of sample residue is also more prominent. Repeatedly used sampling parts are prone to retain tumor tissue debris in gaps and grooves. If they are not cleaned thoroughly, cross-contamination can easily occur, interfering with the purity of subsequent samples and misleading diagnostic conclusions.

[0005] In addition, from the perspective of operational convenience, the handle of the traditional sampling device is poorly designed and lacks ergonomic considerations. Medical staff may easily suffer from hand fatigue if they hold the device for a long time, and the slight tremor of the hand may be amplified during high-precision sampling operations, reducing the accuracy of sampling. At the same time, the storage and retrieval of the device is not convenient enough, and there is a lack of special auxiliary structures. In a busy clinical environment, the device is easily lost or damaged due to improper placement.

[0006] In view of the above shortcomings, the present invention aims to provide a new tumor sampling device for oncology. Through sophisticated structural design, such as a unique clamping device structure, including a curved section adapted to human anatomy, a clamping section with protection, and optimized operating auxiliary components such as a handle with a padded handle and a hanging ring for easy hanging, the present invention effectively solves many problems faced by traditional sampling devices and improves the accuracy, safety and convenience of tumor sampling. Summary of the invention

[0007] 1. Technical issues to be solved

[0008] In view of the deficiencies of the prior art, the present invention provides a tumor sampling device for oncology, which solves the problems raised in the above-mentioned background technology.

[0009] (II) Technical solution

[0010] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0011] A tumor sampling device for oncology, comprising a clamping device, the clamping device comprising a handle section, a bending section integrally formed with the handle section, and a clamping section integrally formed with the bending section, a disposable sheath sleeved on the clamping section, a pad mounted on the handle section, a connecting block fixedly connected to one end of the handle section, and a hanging ring fixedly connected to one end of the connecting block;

[0012] The handle section is fixedly connected with a swivel seat near the bending section, and a limit rebound device is provided in the swivel seat, and the limit rebound device includes an upper swivel buckle and a lower swivel buckle that are rotatably connected to the swivel seat respectively, and the lower swivel buckle is fixedly connected to the lower sleeve, and the upper sleeve is rotatably sleeved in the lower sleeve, and the lower sleeve and the upper sleeve are sleeved with a pressure spring on the outside, and the two ends of the pressure spring are respectively fixed to the end surfaces of the upper swivel buckle and the lower swivel buckle. The upper end of the upper sleeve is fixedly connected with a ring located below the upper swivel buckle, and a toggle rod is provided on one end of the ring, and the lower end of the upper sleeve is fixedly connected with a filling block, and a positioning column is fixedly connected to the bottom of the filling block, and a plurality of quarter-shaped semicircular arc blocks 1 are provided on the positioning column, and a matching interval of semicircular arc blocks 2 are provided in the lower sleeve.

[0013] Furthermore, the shape and size of the disposable sheath are the same as the shape of the clamping section, and clamping teeth are provided on the disposable sheath.

[0014] Furthermore, the disposable sheath is made of transparent medical plastic material, which is convenient for medical staff to observe the sampling situation in real time. The clamping teeth part is frosted, which can not only ensure the firm clamping of tumor tissue samples, but also prevent the samples from being damaged during the clamping process. The disposable sheath and the clamping section are connected by interference fit, which is stable and not easy to fall off after installation.

[0015] Furthermore, the clamping device is flat in shape as a whole.

[0016] Furthermore, the setting position of the toggle rod is at a place where the spiral gap of the pressure spring is larger and is located on one side. When the pressure spring is stretched or compressed, there will be no movement interference between the pressure spring and the toggle rod.

[0017] Furthermore, the diameter of the stuffing block needs to be the same as the inner diameter of the lower sleeve to maintain the overall linear motion.

[0018] Furthermore, the semicircular arc block 1 and the semicircular arc block 2 are designed to have the same interval, and the semicircular arc block 1 and the semicircular arc block 2 form a full circle.

[0019] Furthermore, after the semicircular arc block 1 is rotated, it is engaged between the semicircular arc blocks 2 to be fixed.

[0020] Furthermore, the pressure spring is in a half-compression state; the pressure spring is further compressed downward, the clamping section is in an open state, and the pressure spring is restored, and the clamping section is in a clamped state.

[0021] (III) Beneficial effects

[0022] Compared with the prior art, the present invention provides a tumor sampling device for oncology, which has the following beneficial effects:

[0023] In terms of precise sampling, the curved section of the clamping device of the present invention fits the human anatomical structure and can accurately locate the tumor. The disposable sheath can protect the sample, which greatly improves the sampling accuracy. In terms of operational performance, the handle pad reduces the fatigue of the medical staff's hands, the hanging ring is convenient for storage and retrieval, and the limit rebound device makes the clamping operation convenient and efficient, effectively improving the operational convenience. Compared with traditional tools, this device effectively solves the shortcomings of traditional sampling tools and effectively guarantees the accuracy, safety and convenience of tumor sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the position limiting rebound device of the present invention;

[0026] Figure 3 This is a schematic diagram of the internal structure of the upper sleeve of the present invention;

[0027] Figure 4 It is a schematic diagram of the internal structure of the lower sleeve of the present invention.

[0028] In the figure: 1. handle section; 2. bending section; 3. clamping section; 4. disposable sheath; 5. pad; 6. connecting block; 7. lifting ring; 8. swivel seat; 9. upper swivel buckle; 10. lower swivel buckle; 11. lower sleeve; 12. upper sleeve; 13. pressure spring; 14. collar; 15. toggle rod; 16. filling block; 17. positioning column; 18. semicircular arc block one; 19. semicircular arc block two. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example

[0031] like Figure 1-4 As shown, an embodiment of the present invention provides a tumor sampling device for oncology, comprising a clamping device, wherein the clamping device comprises a handle segment 1, a bending segment 2 integrally formed with the handle segment 1, and a clamping segment 3 integrally formed with the bending segment 2;

[0032] The handle section 1 and the curved section 2 are integrally formed to ensure structural stability and operational consistency. A pad 5 is installed on the outside. The pad 5 is made of soft and elastic silicone material, which fits the curve of the medical staff's hand tightly and effectively relieves hand fatigue caused by long-term holding. At the same time, the surface of the pad 5 is provided with a breathable groove to enhance air circulation, avoid sweating in the palm of the hand and cause operational errors, and provide a comfortable and stable holding experience for medical staff.

[0033] One end is connected to the hanging ring 7 through the connecting block 6. The connecting block 6 firmly connects the handle section 1 and the hanging ring 7 to ensure the structural strength. The surface of the hanging ring 7 is designed with anti-slip textures, which is convenient for medical staff to hang or take the device. Its material is medical stainless steel, which has excellent corrosion resistance, ensures long-term safety and reliability, and is convenient for storing and managing the device in a clinical environment.

[0034] The bending section 2 is integrally formed with the handle section 1 and the clamping section 3, and its bending arc is carefully designed. It is optimized based on the human anatomical structure and the surgical approach to common tumor sites, so that the clamping section 3 can accurately reach the tumor location, effectively reducing the contact and damage to the surrounding healthy tissues, greatly improving the accuracy and safety of sampling, and reducing the surgical risks and pain of patients.

[0035] The clamping section 3 and the bending section 2 are integrally formed, and as the component that directly contacts the tumor tissue, it is sleeved with a disposable sheath 4. The shape and size of the disposable sheath 4 perfectly match the clamping section 3, and it is made of transparent medical plastic material, which is convenient for medical staff to clearly observe the sampling situation in real time during the operation. The clamping teeth set on the sheath are frosted, which can not only firmly clamp the tumor tissue sample to prevent the sample from slipping during the clamping process, but also avoid mechanical damage such as squeezing and tearing to the sample, ensure the integrity of tissue cells, and ensure the accuracy of pathological detection results. The interference fit sleeve method of the disposable sheath 4 and the clamping section 3 ensures that it is stable and will not fall off after installation, and can be directly replaced after use, effectively avoiding cross-contamination of samples and ensuring the purity and reliability of each sampling;

[0036] The handle section 1 is fixedly connected to a swivel seat 8 at a location close to the curved section 2, and a position limiting rebound device is provided in the swivel seat 8;

[0037] The limit rebound device, the swivel seat 8 is fixed to the handle section 1 near the bending section 2, providing a stable installation foundation for the limit rebound device. The swivel seat 8 is rotatably connected with the upper swivel buckle 9 and the lower swivel buckle 10 respectively, ensuring the relative movement between the components is flexible and smooth, which is the key hub for realizing the precise control of the clamping section 3.

[0038] The upper rotating buckle 9 and the lower rotating buckle 10 are respectively connected to the rotating seat 8 in rotation, and are connected to the upper sleeve 12, the lower sleeve 11 and the pressure spring 13. The two work together to cooperate with the telescopic movement of the pressure spring 13 to achieve the relative rotation and positioning of the upper sleeve 12 and the lower sleeve 11, thereby accurately controlling the opening and closing action of the clamping section 3, ensuring that the tumor tissue sample can be stably and accurately clamped during the sampling process.

[0039] The lower sleeve 11 is fixedly connected to the lower turn buckle 10, and the upper sleeve 12 is rotated internally, and is provided with a semicircular arc block 2 19 with matching intervals. During the operation of the device, it is closely matched with the upper sleeve 12 to ensure the accuracy and stability of relative movement. The semicircular arc block 2 19 interacts with the semicircular arc block 1 18 of the upper sleeve 12 to achieve locking and fixing at a specific position, ensuring the stability of the device structure when clamping samples, preventing samples from shifting or falling off, and improving the success rate and reliability of sampling.

[0040] The upper sleeve 12 is rotatably sleeved in the lower sleeve 11, and the upper end is connected to the toggle rod 15 through the collar 14, and the lower end is connected to the stuffing block 16 and the positioning column 17. Under the action of the pressure spring 13, the upper sleeve 12 performs linear motion and rotation relative to the lower sleeve 11, driving the clamping section 3 to achieve opening and clamping actions. The collar 14 and the toggle rod 15 provide a convenient operating interface for medical staff to control the movement of the upper sleeve 12; the diameter of the stuffing block 16 is the same as the inner diameter of the lower sleeve 11, ensuring that the upper sleeve 12 moves smoothly and smoothly in a straight line in the lower sleeve 11, and the positioning column 17 provides a precise installation position for the semicircular block 18 to ensure the realization of the overall function of the device.

[0041] The pressure spring 13 is sleeved on the outside of the lower sleeve 11 and the upper sleeve 12, and the two ends are respectively fixed on the end faces of the upper turn buckle 9 and the lower turn buckle 10, and is initially in a half-compression state. This design cleverly utilizes the elastic potential energy of the spring. When medical staff apply external force to compress the pressure spring 13 downward, the clamping section 3 opens to facilitate access to tumor tissue; after the external force is removed, the spring returns to its original state, and the clamping section 3 automatically clamps the sample. The elastic coefficient of the spring has been accurately calculated and debugged to ensure that during operation, the upper sleeve 12 and the lower sleeve 11 can respond to moderate external forces to achieve fast and accurate clamping and releasing actions, while ensuring that the spring has sufficient fatigue life to meet the needs of multiple clinical uses and reduce the inconvenience and cost increase caused by frequent replacement of components.

[0042] The collar 14 and the toggle rod 15 The collar 14 is connected to the upper end of the upper sleeve 12 and is located below the upper turn buckle 9. The toggle rod 15 provided at one end is located on the side where the spiral gap of the pressure spring 13 is larger. This layout ensures that the toggle rod 15 will not interfere with the movement of the spring during the stretching or compression of the pressure spring 13, ensuring the smoothness and reliability of the operation. Medical staff can easily control the movement of the upper sleeve 12 by toggling the toggle rod 15, thereby realizing precise control of the opening and closing state of the clamping section 3, improving the efficiency and convenience of operation.

[0043] The stuffing block 16 is connected to the lower end of the upper sleeve 12, and its diameter is strictly the same as the inner diameter of the lower sleeve 11. When the device is running, the stuffing block 16 plays a guiding and stabilizing role in the lower sleeve 11, ensuring the overall linear motion of the upper sleeve 12 is stable, preventing the upper sleeve 12 from deflecting or shaking during the motion, ensuring the accuracy and stability of the opening and closing action of the clamping section 3, and effectively improving the accuracy and reliability of the sampling operation.

[0044] Positioning column 17, semi-circular arc block 18 and semi-circular arc block 2 19, the positioning column 17 is fixed under the filling block 16 to provide stable support for the semi-circular arc block 18. The semi-circular arc block 18 is in a quarter shape and is arranged on the positioning column 17, and together with the semi-circular arc block 2 19 with the same spacing in the lower sleeve 11, it constitutes a complete positioning structure. When the semi-circular arc block 18 is rotated to a certain angle, it can be accurately engaged between the semi-circular arc block 2 19 to achieve relative fixation of the upper sleeve 12 and the lower sleeve 11. When clamping tumor tissue samples, this structure can effectively prevent the device from loosening due to external force or vibration, ensure that the sample is always in a stable clamping state, ensure the safety and accuracy of the sampling process, and provide reliable sample conditions for subsequent pathological detection;

[0045] The tumor sampling device mainly relies on the cooperation of the clamping device and the limiting rebound device. During operation, the medical staff manually toggles the toggle rod 15, driving the upper sleeve 12 to overcome the elastic force of the pressure spring 13 and move downward, so that the filling block 16, the positioning column 17 and the clamping section 3 connected to the upper sleeve 12 move downward synchronously. At this time, the clamping section 3 is opened and ready to clamp the tumor tissue. When the tumor tissue is located between the clamping sections 3, the toggle rod 15 is released, the pressure spring 13 rebounds, and the upper sleeve 12 moves upward, so that the clamping section 3 clamps the tumor tissue sample. In this process, the relative movement of the lower sleeve 11 and the upper sleeve 12 is limited and guided by the upper turn buckle 9 and the lower turn buckle 10 in the turntable 8 to ensure the stability of the movement. The disposable sheath 4 is sleeved on the clamping section 3, which can not only protect the tumor tissue from being damaged, but also prevent cross contamination of the sample. The handle section 1 is convenient for medical staff to hold and press, the pad 5 reduces hand fatigue, and the connecting block 6 and the hanging ring 7 are convenient for storing and taking the device.

[0046] like Figure 1 As shown, in some embodiments, the shape and size of the disposable sheath 4 is the same as that of the clamping section 3, and clamping teeth are provided on the disposable sheath 4; this design of the disposable sheath 4 is of great significance. It is the same shape as the clamping section 3, ensuring a close fit, and will not loosen or shift during use, thereby ensuring the stability of the operation. The clamping teeth provided on the disposable sheath 4 can effectively enhance the clamping force on the tumor tissue sample. When clamping the sample, the clamping teeth can be embedded in the tissue surface to prevent the sample from slipping and ensure the success rate of sampling. At the same time, the presence of the clamping teeth also shares the pressure of the clamping section 3 directly contacting the sample, reducing the risk of damage to the sample, helping to maintain the integrity of the sample, and providing a guarantee for subsequent accurate pathological detection.

[0047] like Figure 1As shown, in some embodiments, the disposable sheath 4 is made of transparent medical plastic material, which is convenient for medical staff to observe the sampling situation in real time. The clamping teeth are frosted, which can not only ensure the firm clamping of tumor tissue samples, but also prevent the samples from being damaged during the clamping process. The disposable sheath 4 and the clamping section 3 are connected by interference fit, which is stable and not easy to fall off after installation; the disposable sheath 4 is made of transparent medical plastic material, which enables medical staff to clearly observe the situation of tumor tissue samples through the sheath during operation, so as to more accurately control the clamping force and position and improve the accuracy of sampling. The clamping teeth are frosted, which ensures sufficient friction to firmly clamp the tumor tissue samples, while avoiding scratching or damaging the sample structure due to the rough surface, effectively preventing the sample from being damaged during the clamping process, ensuring that the integrity of the sample is not affected, and providing a reliable sample basis for subsequent pathological detection. The disposable sheath 4 and the clamping section 3 are connected by interference fit. This tight connection ensures that the sheath will not fall off accidentally during use, ensures the continuity and safety of the operation, avoids problems such as sample loss or contamination caused by loose sheath, and makes the entire sampling process more stable and reliable.

[0048] like Figure 1 As shown, in some embodiments, the clamping device is flat in shape as a whole; the clamping device is designed to be flat in shape as a whole, which has many advantages. In actual operation, the flat shape enables it to pass through the natural cavity or narrow surgical channel of the human body more conveniently, reducing unnecessary squeezing and damage to surrounding tissues, and making it easier to approach the tumor site. Compared with traditional non-flat sampling devices, it is superior in operational flexibility, can better adapt to different anatomical structures and surgical environments, provides favorable conditions for precise sampling, effectively improves the success rate and safety of tumor sampling, and reduces surgical risks and patient pain.

[0049] like Figure 3 As shown, in some embodiments, the setting position of the toggle rod 15 is at a place where the spiral gap of the pressure spring 13 is larger and is located on one side. When the pressure spring 13 is stretched or compressed, the pressure spring 13 will not interfere with the movement of the toggle rod 15; the design that the toggle rod 15 is located at a place where the spiral gap of the pressure spring 13 is larger and on one side is very clever. During operation, when it is necessary to control the upper sleeve 12 through the toggle rod 15 to adjust the opening and closing of the clamping section 3, no matter whether the pressure spring 13 is in a stretched or compressed state, its own spiral structure will not hinder the movement of the toggle rod 15. This ensures that medical staff can control the device smoothly during operation, and the accuracy and efficiency of the operation will not be affected by the mutual interference between the spring and the toggle rod 15, so that the entire sampling process can be carried out stably and efficiently, greatly improving the reliability and ease of use of the device.

[0050] like Figure 1 As shown, in some embodiments, the diameter of the stuffing block 16 needs to be the same as the inner diameter of the lower sleeve 11 to maintain the overall linear motion; the design that the diameter of the stuffing block 16 is the same as the inner diameter of the lower sleeve 11 is crucial. When the device is running, when the pressure spring 13 is extended and retracted to drive the upper sleeve 12 to move, the stuffing block 16 plays a precise guiding and stabilizing role in the lower sleeve 11. The same diameter ensures that the stuffing block 16 fits tightly against the inner wall of the lower sleeve 11 without any shaking space, so that the upper sleeve 12 can only move linearly along the axial direction of the lower sleeve 11, avoiding deviations in the motion trajectory of the clamping section 3 caused by eccentricity or offset. This stable linear motion ensures the accuracy of the clamping section 3 during the opening and clamping process, thereby improving the accuracy and reliability of the tumor sampling operation, ensuring that tumor tissue samples can be accurately obtained, and providing strong support for subsequent pathological diagnosis.

[0051] like Figure 3 and 4 As shown, in some embodiments, the semicircular block 18 and the semicircular block 2 19 are designed with the same interval, and the semicircular block 18 and the semicircular block 2 19 form a full circle; when clamping tumor tissue samples, when the relative positions of the upper sleeve 12 and the lower sleeve 11 need to be fixed, the semicircular block 18 can be accurately engaged between the semicircular block 2 19 after rotating a certain angle. This tight engagement ensures that the upper sleeve 12 and the lower sleeve 11 will not be relatively displaced, so that the clamping state of the clamping section 3 can be stably maintained, effectively preventing the sample from loosening or falling off due to external force or vibration during the sampling process, ensuring the stability and reliability of sampling, providing an important guarantee for obtaining high-quality tumor tissue samples, and helping to improve the accuracy of subsequent pathological detection results.

[0052] like Figure 3 As shown, in some embodiments, the semicircular block 18 is engaged between the semicircular block 2 19 after being rotated to form a fixed position; in the tumor sampling operation, after the clamping section 3 clamps the tumor tissue sample, the rotation and engagement of the semicircular block 18 can effectively resist the interference force that may be generated by the outside world, such as slight vibration during the operation or inadvertent touch by medical staff. This stable fixing method ensures that the relative position of the upper sleeve 12 and the lower sleeve 11 remains unchanged, thereby maintaining the stable clamping of the sample by the clamping section 3, avoiding displacement or falling off of the sample during transfer or subsequent operations, greatly improving the success rate and reliability of sampling, providing an accurate sample basis for tumor diagnosis, and helping to improve the accuracy and efficiency of clinical diagnosis.

[0053] like Figure 1As shown, in some embodiments, the pressure spring 13 is in a half-compression state; the pressure spring 13 is further compressed downward, the clamping section 3 is in an open state, and the pressure spring 13 is restored, and the clamping section 3 is in a clamped state; in the initial state, this moderate compression provides a stable elastic potential energy basis for subsequent operations. When it is necessary to clamp tumor tissue, the medical staff applies external force to continue to compress the pressure spring 13 downward, and the elastic potential energy stored in the spring is further increased. Through the linkage of the upper sleeve 12, the stuffing block 16 and other components, the clamping section 3 is smoothly opened, so that it can be accurately placed around the tumor tissue. Once the external force is removed, the pressure spring 13 quickly rebounds by its own elastic restoring force, driving the relevant components to move in the opposite direction, so that the clamping section 3 quickly clamps the tumor tissue sample. This mechanism of controlling the opening and closing of the clamping section 3 based on the elastic change of the pressure spring 13 is simple to operate and sensitive to response, which can effectively improve the efficiency and accuracy of tumor sampling, reduce the adverse effects on the sample caused by complex operation or delay, and provide high-quality sample guarantee for subsequent pathological analysis.

[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tumor sampling device for oncology, comprising a clamping device, characterized in that: The clamping device comprises a handle section (1), a bending section (2) integrally formed with the handle section (1), and a clamping section (3) integrally formed with the bending section (2); a disposable sheath (4) is sleeved on the clamping section (3); a protective pad (5) is installed on the handle section (1); one end of the handle section (1) is fixedly connected to a connecting block (6); one end of the connecting block (6) is fixedly connected to a lifting ring (7); The handle section (1) is fixedly connected to a swivel seat (8) at a location close to the bending section (2), and a limit rebound device is provided in the swivel seat (8). The limit rebound device comprises an upper swivel buckle (9) and a lower swivel buckle (10) which are respectively rotatably connected to the swivel seat (8), a lower sleeve (11) is fixedly connected to the lower swivel buckle (10), an upper sleeve (12) is rotatably sleeved in the lower sleeve (11), and pressure springs (13) are sleeved outside the lower sleeve (11) and the upper sleeve (12), and the two ends of the pressure spring (13) are respectively engaged with the end surfaces of the upper swivel buckle (9) and the lower swivel buckle (10). The upper sleeve (12) is fixedly connected to the lower end of the upper turn buckle (9) in a snap-fitting and rotatable manner, the upper end of the upper sleeve (12) is fixedly connected to a sleeve ring (14) located below the upper turn buckle (9), one end of the sleeve ring (14) is provided with a toggle rod (15), the lower end of the upper sleeve (12) is fixedly connected to a filling block (16), the lower part of the filling block (16) is fixedly connected to a positioning column (17), the positioning column (17) is provided with a plurality of quarter-shaped semicircular arc blocks (18), and the lower sleeve (11) is provided with matching semicircular arc blocks (19) at intervals.

2. A tumor sampling device for oncology according to claim 1, characterized in that: The shape and size of the disposable sheath (4) are the same as those of the clamping section (3), and clamping teeth are provided on the disposable sheath (4).

3. A tumor sampling device for oncology according to claim 2, characterized in that: The disposable sheath (4) is made of transparent medical plastic material, which is convenient for medical staff to observe the sampling situation in real time. The clamping teeth are frosted to ensure that the tumor tissue sample is firmly clamped and prevent the sample from being damaged during the clamping process. The disposable sheath (4) and the clamping section (3) are connected by interference fit, and are stable and not easy to fall off after installation.

4. A tumor sampling device for oncology according to claim 1, characterized in that: The clamping device is flat in shape as a whole.

5. The tumor sampling device for oncology according to claim 1, characterized in that: The setting position of the toggle rod (15) is at a place where the spiral gap of the pressure spring (13) is larger and is located on one side. When the pressure spring (13) is stretched or compressed, there will be no movement interference between the pressure spring (13) and the toggle rod (15).

6. A tumor sampling device for oncology according to claim 1, characterized in that: The diameter of the stuffing block (16) needs to be the same as the inner diameter of the lower sleeve (11) to maintain the overall linear motion.

7. A tumor sampling device for oncology according to claim 1, characterized in that: The semicircular arc block 1 (18) and the semicircular arc block 2 (19) are designed to have the same spacing, and the semicircular arc block 1 (18) and the semicircular arc block 2 (19) form a full circle.

8. A tumor sampling device for oncology according to claim 7, characterized in that: After the semicircular arc block 1 (18) is rotated, it is engaged between the semicircular arc blocks 2 (19) to be fixed.

9. The tumor sampling device for oncology according to claim 1, characterized in that: The pressure spring (13) is in a half-compression state; the pressure spring (13) is further compressed downward, and the clamping section (3) is in an open state; the pressure spring (13) is restored, and the clamping section (3) is in a clamped state.

Images