A medical instrument for tumor puncture biopsy

Abstract

The present invention discloses a medical instrument for tumor puncture biopsy, and relates to the technical field of medical diagnostic instruments. The medical instrument for tumor puncture biopsy comprises a hand-held tube, and the front end of the hand-held tube is detachably connected to a catheter by means of a bolt. In the process of using the medical instrument for tumor puncture biopsy to perform tumor puncture biopsy, when the insertion length of the puncture needle is increased, the force storage effect on the puncture needle is synchronously increased through transmission, so that the puncture needle can puncture to a designated position normally, and the normal puncture biopsy operation is ensured. On the contrary, when the insertion length of the puncture needle is reduced, the force storage effect on the puncture needle is synchronously reduced through the same transmission principle, further reducing the damage to the surrounding tissues of the puncture position and reducing the disturbance caused to the tumor tissue, so that the force storage effect on the puncture needle during the puncture biopsy can be adaptively adjusted and controlled according to the puncture length of the puncture needle, and the effect of the puncture biopsy is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of medical diagnostic instruments, in particular to a medical instrument for tumor puncture biopsy. Background Art

[0002] Tumor puncture biopsy medical instruments are mainly used to obtain samples of tumor tissue for pathological diagnosis; tumor puncture biopsy medical instruments are widely used in the diagnosis and treatment of various tumors, including but not limited to liver cancer, lung cancer, breast cancer, prostate cancer, etc. Tissue samples obtained through puncture biopsy can provide doctors with important information about the nature, stage and prognosis of the tumor, thereby helping to develop a more personalized and accurate treatment plan.

[0003] During the puncture operation of the tumor puncture biopsy medical device, the catheter and the puncture needle are inserted into the biopsy site. After the puncture is completed, the puncture needle is punctured from the front end of the catheter with a certain force through the cooperation of the force storage component, so that part of the tissue remains inside the puncture needle to complete the puncture biopsy operation. However, during the puncture process, the puncture depth and puncture force of the puncture needle are difficult to control autonomously and adaptively. When the puncture needle punctures for a short length but punctures with a greater force, it will increase the damage to the surrounding tissues of the puncture position and increase the disturbance caused to the tumor tissue. When the puncture needle punctures for a long length but punctures with a smaller force, the puncture will be blocked, affecting the normal puncture biopsy operation. For this reason, we propose a tumor puncture biopsy medical device. Summary of the invention

[0004] The purpose of the present invention is to provide a medical instrument for tumor puncture biopsy to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a medical instrument for tumor puncture biopsy, comprising a hand-held tube, the front end of which is detachably connected to a catheter by means of a bolt, the interior of which is slidably connected to a puncture needle for puncture, and further comprising:

[0006] A telescopic component is arranged inside the hand-held tube for telescopically pushing the puncture needle, and a power storage component is arranged inside the hand-held tube for assisting the puncture needle in puncture;

[0007] The telescopic assembly includes a mounting circular plate arranged inside the hand-held tube, one end of the puncture needle is fixed to the mounting circular plate, a push rod is slidably connected to the hand-held tube, one end of the push rod is fixed to the mounting circular plate, and the other end of the push rod is fixed to a push pin;

[0008] The force storage component includes an annular baffle plate arranged inside the hand-held tube for blocking the movement of the mounting circular plate, a sliding component for slidably connecting to the annular baffle plate is arranged on the hand-held tube, a fixed plate is slidably connected inside the hand-held tube, the push rod is slidably connected to the fixed plate, the mounting circular plate is located between the annular baffle plate and the fixed plate, a force storage spring is sleeved on the outer side of the push rod, and the two ends of the force storage spring are respectively set to resist the mounting circular plate and the fixed plate, a limiting component for limiting the mounting circular plate during the force storage process is arranged inside the hand-held tube, and the limiting component is located between the annular baffle plate and the fixed plate, and an adaptive adjustment component for controlling the puncture force according to the puncture movement length during the force storage puncture process is arranged on the hand-held tube.

[0009] Preferably, the sliding assembly includes a plurality of groups of slide grooves opened on the hand-held tube, each group of the slide grooves is evenly distributed in a ring shape on the hand-held tube, each group of the slide grooves is slidably connected to a slider, and one end of each group of the slider is fixed to an annular baffle.

[0010] Preferably, the adaptive adjustment component includes multiple groups of linkage rods slidably connected to the mounting circular plate, the two ends of the linkage rods are respectively fixed to the annular baffle and the fixed plate, the outer side of the hand-held tube is sleeved with a connecting ring and a driving ring, the driving ring is rotatably connected to the connecting ring on the side opposite to the connecting ring through a first rotating component, the inner side of the driving ring is meshed with the outer side of the hand-held tube by a threaded connection, and the other end of each group of the sliding blocks is fixed to the inner side of the connecting ring.

[0011] Preferably, the first rotating component includes a first annular groove opened on one side of the driving ring, a first annular plate is rotatably connected to the first annular groove, the first annular plate is fixed to one side of the connecting ring, the cross-sections of the first annular groove and the first annular plate are T-shaped, and the driving ring, the first annular groove, the first annular plate and the connecting ring are concentrically arranged.

[0012] Preferably, the limiting assembly includes an annular cover fixed inside the hand-held tube, and the annular cover is telescopically connected to a plurality of groups of limiting plates for limiting the mounting circular plate through an elastic assembly, and each group of limiting plates is evenly distributed in a ring shape, and one side of the limiting plate is provided with an inclined surface for transmitting against the mounting circular plate, and the annular cover is provided with an unlocking assembly for assisting unlocking after limiting.

[0013] Preferably, the elastic component includes multiple groups of sleeves fixed on the inner side of the annular cover, the sleeves are slidably connected with a sliding rod, one end of the sliding rod is fixed to the limit plate, and the outer side of each group of the sleeves is provided with a connecting spring, and the two ends of the connecting spring are respectively set to resist the inner wall of the annular cover and the limit plate.

[0014] Preferably, the unlocking assembly includes an operating ring arranged inside the annular cover, a second rotating assembly for assisting the operating ring in rotatable connection is arranged between the operating ring and the inside of the annular cover, a plurality of groups of first inclined grooves are provided on the operating ring, each group of the first inclined grooves is slidably connected with a first transmission pin, one end of each group of the first transmission pins is respectively fixed to one side of each group of limiting plates, and a driving assembly for rotating the operating ring is arranged inside the annular cover.

[0015] Preferably, the driving assembly includes a second bevel groove provided on the operating ring, a second transmission pin is slidably connected to the second bevel groove, a mounting plate is provided inside the annular cover, one end of the second transmission pin is fixed to the mounting plate, and a pushing assembly for pushing the mounting plate is provided on the hand-held tube.

[0016] Preferably, the pushing assembly includes a mounting tube fixed to the outside of the hand-held tube, and a spline rod is slidably connected to the mounting tube through a spline groove. One end of the spline rod passes through the interior of the annular cover and is fixed to the mounting plate, and a fixing pin is fixed to the other end of the spline rod. A return spring is provided on the outer side of the spline rod.

[0017] Preferably, the second rotating assembly includes a second annular groove opened on the inner side of the operating ring, a second annular plate is rotatably connected to the second annular groove, the second annular plate is sleeved and fixed inside the annular cover, the cross-sections of the second annular groove and the second annular plate are T-shaped, and the operating ring, the second annular groove, the second annular plate and the annular cover are concentrically arranged.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the process of using the tumor puncture biopsy medical instrument to perform tumor puncture biopsy operations, when the insertion length of the puncture needle is increased, the force storage effect on the puncture needle is synchronously increased through transmission, so that the puncture needle can normally puncture to the designated position, ensuring normal puncture biopsy operations. On the contrary, when the insertion length of the puncture needle is reduced, the force storage effect on the puncture needle is synchronously reduced through the same transmission principle, further reducing damage to the surrounding tissues of the puncture position and reducing the disturbance caused to the tumor tissue, so that the force storage effect of the puncture needle during the puncture biopsy can be adaptively adjusted and controlled according to the puncture length of the puncture needle, thereby ensuring the effect of the puncture biopsy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention;

[0021] Figure 2 It is a schematic structural diagram of the adaptive adjustment component and the first rotating component of the present invention;

[0022] Figure 3 It is a schematic diagram of the internal structure of the hand-held tube of the present invention;

[0023] Figure 4 It is a schematic diagram of the puncture length after the puncture needle of the present invention is charged and the charged length;

[0024] Figure 5 It is a schematic diagram of the state after the mounting circular plate of the present invention is limited;

[0025] Figure 6 It is a schematic diagram of the structure of the limit assembly and the elastic assembly of the present invention;

[0026] Figure 7 It is a schematic diagram of the unlocking component structure of the present invention;

[0027] Figure 8 It is a schematic diagram of the structure of the driving assembly, the pushing assembly and the second rotating assembly of the present invention;

[0028] Fig. 9 It is a transmission schematic diagram during the unlocking process of the present invention;

[0029] Fig.10 It is a schematic diagram of the structure of the elastic component of the present invention.

[0030] In the figure: 101-hand-held tube; 102-catheter; 103-puncture needle; 201-mounting circular plate; 202-push rod; 203-push pin; 301-annular baffle; 302-fixing plate; 303-storage spring; 401-sliding groove; 402-sliding block; 501-linking rod; 502-connecting ring; 503-driving ring; 601-first annular groove; 602-first annular plate; 701-annular cover; 702-limiting Plate; 703- inclined surface; 801- sleeve; 802- slide rod; 803- connecting spring; 901- operating ring; 902- first inclined groove; 903- first transmission pin; 1001- second inclined groove; 1002- mounting plate; 1003- second transmission pin; 1101- mounting cylinder; 1102- spline rod; 1103- fixing pin; 1104- reset spring; 1201- second annular groove; 1202- second annular plate. DETAILED DESCRIPTION

[0031] 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.

[0032] Example 1: Please refer to Figure 1-Figure 10The medical device for tumor puncture biopsy shown in the figure includes a hand-held tube 101, the front end of the hand-held tube 101 is detachably connected to a catheter 102 by means of a bolt, and the interior of the catheter 102 is slidably connected to a puncture needle 103 for puncture, and also includes:

[0033] A telescopic component is disposed inside the hand-held tube 101 for telescopically pushing the puncture needle 103. A power storage component is disposed inside the hand-held tube 101 for assisting the puncture needle 103 in puncturing;

[0034] The telescopic assembly includes a mounting circular plate 201 disposed inside the hand-held cylinder 101, one end of the puncture needle 103 is fixed to the mounting circular plate 201, a push rod 202 is slidably connected to the hand-held cylinder 101, one end of the push rod 202 is fixed to the mounting circular plate 201, and a push pin 203 is fixed to the other end of the push rod 202;

[0035] The force storage component includes an annular baffle 301 arranged inside the hand-held tube 101 for blocking the movement of the mounting circular plate 201, a sliding component for slidably connecting the annular baffle 301 is arranged on the hand-held tube 101, a fixed plate 302 is slidably connected inside the hand-held tube 101, and the push rod 202 is slidably connected to the fixed plate 302, the mounting circular plate 201 is located between the annular baffle 301 and the fixed plate 302, and a force storage spring 303 is sleeved on the outer side of the push rod 202, and the two ends of the force storage spring 303 are respectively set against the mounting circular plate 201 and the fixed plate 302, and a limiting component for limiting the mounting circular plate 201 during the force storage process is arranged inside the hand-held tube 101, and the limiting component is between the annular baffle 301 and the fixed plate 302, and an adaptive adjustment component for controlling the puncture force according to the puncture movement length during the force storage puncture process is provided on the hand-held tube 101;

[0036] It should be noted here that: in the process of using the tumor puncture biopsy medical instrument to perform tumor puncture biopsy, when the insertion length of the puncture needle 103 is increased, the force storage effect on the puncture needle 103 is synchronously increased through transmission, so that the puncture needle 103 can normally puncture to the designated position to ensure normal puncture biopsy operation. On the contrary, when the insertion length of the puncture needle 103 is reduced, the force storage effect on the puncture needle 103 is synchronously reduced through the same transmission principle, further reducing damage to the surrounding tissues of the puncture position and reducing the disturbance caused to the tumor tissue, so that the force storage effect of the puncture needle 103 during the puncture biopsy can be adaptively adjusted and controlled according to the puncture length of the puncture needle 103 to ensure the effect of the puncture biopsy.

[0037] Preferably, the sliding assembly includes a plurality of slide grooves 401 provided on the hand-held tube 101, each slide groove 401 is evenly distributed in a ring shape on the hand-held tube 101, each slide groove 401 is slidably connected with a slider 402, and one end of each slider 402 is fixed to the annular baffle 301;

[0038] It should be noted here that the movement of the annular baffle 301 and the connecting ring 502 is guided by the sliding groove 401 and the slider 402 , and the connection transmission between the annular baffle 301 and the connecting ring 502 is facilitated by the sliding groove 401 and the slider 402 .

[0039] Preferably, the adaptive adjustment component includes a plurality of linkage rods 501 slidably connected to the mounting circular plate 201, the two ends of the linkage rods 501 are respectively fixed to the annular baffle 301 and the fixing plate 302, the outer side of the hand-held tube 101 is sleeved with a connecting ring 502 and a driving ring 503, the driving ring 503 is rotatably connected to the side opposite to the connecting ring 502 through a first rotating component, the inner side of the driving ring 503 is meshed and connected to the outer side of the hand-held tube 101 by means of threads, and the other end of each group of sliders 402 is fixed to the inner side of the connecting ring 502;

[0040] It should be noted here that: when the insertion length of the puncture needle 103 needs to be increased, the drive ring 503 is rotated under the premise that the mounting circular plate 201 is restrained by the groups of limit plates 702. During the rotation of the drive ring 503, the drive ring 503 and the outer side of the hand-held tube 101 are meshed with each other and the connection of the first rotating component drive the connecting ring 502 and the annular baffle 301 to move away from the limit plate 702, so that the annular baffle 301 blocks the mounting circular plate 201 at a farther position, thereby achieving the purpose of increasing the insertion length of the puncture needle 103. During the movement of the annular baffle 301, the fixing plate 201 is driven by multiple groups of linkage rods 501. 302 moves toward the limiting plate 702, so at this time the mounting circular plate 201 is in a state of being restrained by the limiting plate 702, and the movement of the fixing plate 302 toward the limiting plate 702 further compresses the force storage spring 303, thereby increasing the force storage effect, and facilitating the subsequent puncture needle 103 to pierce with greater force. Therefore, when the insertion length of the puncture needle 103 is increased, the force storage effect on the puncture needle 103 is increased synchronously through transmission, so that the puncture needle 103 can puncture to the specified position normally, ensuring normal puncture biopsy operation; on the contrary, when the insertion length of the puncture needle 103 is reduced, the force storage effect on the puncture needle 103 is reduced synchronously through the same transmission principle.

[0041] Preferably, the first rotating assembly includes a first annular groove 601 opened on one side of the driving ring 503, a first annular plate 602 is rotatably connected to the first annular groove 601, the first annular plate 602 is fixed to one side of the connecting ring 502, the cross-sections of the first annular groove 601 and the first annular plate 602 are T-shaped, and the driving ring 503, the first annular groove 601, the first annular plate 602 and the connecting ring 502 are concentrically arranged;

[0042] It should be noted here that: the first annular groove 601 and the first annular plate 602 facilitate the rotatable connection of the auxiliary driving ring 503 on one side of the connecting ring 502, and the connection between the first annular groove 601 and the first annular plate 602 enables the driving ring 503 to drive the connecting ring 502 to move synchronously during the movement, and the cross-section of the first annular groove 601 and the first annular plate 602 is T-shaped, which facilitates improving the stability during the connection transmission process.

[0043] Preferably, the limiting assembly includes an annular cover 701 fixed inside the hand-held tube 101, and the annular cover 701 is retractably connected to multiple groups of limiting plates 702 for abutting against the mounting circular plate 201 through an elastic component, and each group of limiting plates 702 is evenly distributed in a ring shape, and one side of the limiting plate 702 is provided with an inclined surface 703 for abutting against the mounting circular plate 201 for transmission, and the annular cover 701 is provided with an unlocking assembly for assisting unlocking after limiting;

[0044] It should be noted here that: in the process of pulling the mounting circular plate 201 toward the fixed plate 302, the mounting circular plate 201 is abutted against the inclined surface 703 on the limiting plate 702, pushing each group of limiting plates 702 to contract under force, and when the mounting circular plate 201 slides past the position of the limiting plate 702, the elastic component pushes each group of limiting plates 702 to reset, and each group of limiting plates 702 blocks the reset movement of the mounting circular plate 201, thereby achieving a limiting effect.

[0045] Preferably, the elastic component includes a plurality of sets of sleeves 801 fixed to the inner side of the annular cover 701, a slide bar 802 is slidably connected to the sleeve 801, one end of the slide bar 802 is fixed to the limit plate 702, and a connecting spring 803 is sleeved on the outer side of each set of sleeves 801, and the two ends of the connecting spring 803 are respectively set against the inner wall of the annular cover 701 and the limit plate 702;

[0046] It should be noted here that: through multiple groups of sleeves 801 and slide rods 802, the telescopic guiding movement of the limiting plate 702 is facilitated, and through each group of connecting springs 803, the reset movement of the limiting plate 702 after the contraction movement is facilitated.

[0047] Preferably, the unlocking assembly includes an operating ring 901 arranged inside the annular cover 701, a second rotating assembly for assisting the operating ring 901 to be rotatably connected is arranged between the operating ring 901 and the inside of the annular cover 701, a plurality of groups of first inclined grooves 902 are provided on the operating ring 901, each group of first inclined grooves 902 is slidably connected with a first transmission pin 903, one end of each group of first transmission pins 903 is respectively fixed to one side of each group of limiting plates 702, and a driving assembly for rotating the operating ring 901 is arranged inside the annular cover 701;

[0048] It should be noted here that: the operating ring 901 is rotated by the driving component. During the rotation of the operating ring 901, each group of first inclined grooves 902 interacts with each group of first transmission pins 903, so that each group of limit plates 702 is forced to move closer to or away from each other. In the process of driving each group of limit plates 702 to move away from each other, each group of limit plates 702 no longer abuts against the mounting circular plate 201, thereby releasing the abutment limit state of the mounting circular plate 201.

[0049] Preferably, the driving assembly includes a second inclined groove 1001 provided on the operating ring 901, a second transmission pin 1003 is slidably connected to the second inclined groove 1001, a mounting plate 1002 is provided inside the annular cover 701, one end of the second transmission pin 1003 is fixed to the mounting plate 1002, and a pushing assembly for pushing the mounting plate 1002 is provided on the hand-held tube 101;

[0050] It should be noted here that: the mounting plate 1002 is moved by pushing the assembly, and during the movement of the mounting plate 1002 , the operating ring 901 is driven to rotate by the interaction between the second inclined slot 1001 and the second transmission pin 1003 .

[0051] Preferably, the pushing assembly includes a mounting cylinder 1101 fixed to the outside of the hand-held cylinder 101, a spline rod 1102 is slidably connected to the mounting cylinder 1101 through a spline groove, one end of the spline rod 1102 penetrates into the inside of the annular cover 701 and is fixed to the mounting plate 1002, a fixing pin 1103 is fixed to the other end of the spline rod 1102, and a return spring 1104 is sleeved on the outside of the spline rod 1102;

[0052] It should be noted here that: the fixing pin 1103 squeezes the spline rod 1102 to facilitate the movement of the mounting plate 1002, and the reset spring 1104 facilitates the reset of the spline rod 1102 and the fixing pin 1103 after being pushed.

[0053] Preferably, the second rotating assembly includes a second annular groove 1201 opened on the inner side of the operating ring 901, a second annular plate 1202 is rotatably connected to the second annular groove 1201, the second annular plate 1202 is sleeved and fixed inside the annular cover 701, the cross-sections of the second annular groove 1201 and the second annular plate 1202 are T-shaped, and the operating ring 901, the second annular groove 1201, the second annular plate 1202 and the annular cover 701 are concentrically arranged;

[0054] It should be noted here that the interaction between the second annular groove 1201 and the second annular plate 1202 facilitates the stable rotation of the auxiliary operating ring 901 inside the annular cover 701, and the T-shaped cross-section of the second annular groove 1201 and the second annular plate 1202 improves the stability of the rotation of the operating ring 901.

[0055] In this scheme: a medical device for tumor puncture biopsy comprises the following steps:

[0056] During the process of using the tumor puncture biopsy medical instrument to perform tumor puncture biopsy, the puncture needle 103 on the mounting circular plate 201 is retracted by pushing the pin 203 and the push rod 202, so that the front end of the puncture needle 103 is inside the catheter 102. After the puncture needle 103 is retracted, the catheter 102 is inserted into the position to be biopsied by pushing the hand-held tube 101. After the insertion is completed, the mounting circular plate 201 is further pulled and retracted by pushing the pin 203 and the push rod 202. During the pulling process, the pulled and retracted mounting circular plate 201 is offset and limited by the limiting component, and during the process of retracting and pulling the mounting circular plate 201, , so that the force storage spring 303 is deformed by force to generate elastic force, and the force is stored for the subsequent puncture needle 103 to be inserted out. After the force storage is completed, the limit of the mounting circular plate 201 is released by the unlocking component. At this time, the puncture needle 103 on the mounting circular plate 201 passes through the catheter 102 under the elastic force of the force storage spring 303 and penetrates into the part to be biopsied, so that part of the tissue at this position remains inside the puncture needle 103. After the puncture is completed, the puncture needle 103 is retracted into the catheter 102 again, and the shielding effect of the catheter 102 on the puncture needle 103 is used to prevent the puncture needle 103 from being affected by other tissues during the removal process, thereby completing the puncture biopsy operation of the tumor;

[0057] The elastic force of the force storage spring 303 pushes the puncture needle 103 out of the catheter 102 and into the part to be biopsied, so that the mounting circular plate 201 and the annular baffle 301 are abutted against each other, and the annular baffle 301 blocks the mounting circular plate 201, thereby controlling the insertion length of the puncture needle 103, and achieving the purpose of controlling the puncture length. During the puncture process, when the insertion length of the puncture needle 103 needs to be increased according to the requirements of the puncture biopsy, the mounting circular plate 201 is in the state of being limited by each group. Under the premise that the positioning plate 702 is against the limit position, the driving ring 503 is rotated. During the rotation of the driving ring 503, the driving ring 503 and the outer side of the hand-held tube 101 are meshed with each other and the connection of the first rotating component drive the connecting ring 502 and the annular baffle 301 to move away from the limiting plate 702, so that the annular baffle 301 is against the mounting circular plate 201 at a farther position, so as to increase the insertion length of the puncture needle 103. In the embodiment, the fixing plate 302 is driven to move toward the limiting plate 702 through the multiple groups of linkage rods 501. At this time, the mounting circular plate 201 is in a state of being restrained by the limiting plate 702. The movement of the fixing plate 302 toward the limiting plate 702 further compresses the force storage spring 303, thereby increasing the force storage effect, and facilitating the subsequent puncture needle 103 to puncture with greater force. Therefore, when the insertion length of the puncture needle 103 is increased, the force storage effect on the puncture needle 103 is increased synchronously through transmission, so that the puncture needle 103 can be normally punctured to the designated position, ensuring normal puncture biopsy operation. On the contrary, when the insertion length of the puncture needle 103 is reduced, the force storage effect on the puncture needle 103 is reduced synchronously through the same transmission principle, further reducing damage to the surrounding tissues of the puncture position and reducing the disturbance caused to the tumor tissue, so that the force storage effect on the puncture needle 103 during the puncture biopsy process can be adaptively adjusted and controlled according to the puncture length of the puncture needle 103, thereby ensuring the effect of the puncture biopsy.

[0058] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A medical device for tumor puncture biopsy, comprising: A hand-held tube (101), the front end of the hand-held tube (101) being detachably connected to a catheter (102) by means of a bolt, and the interior of the catheter (102) being slidably connected to a puncture needle (103) for puncture; It is characterized by further comprising: A telescopic component disposed inside the hand-held tube (101) for telescopically pushing the puncture needle (103), wherein a force storage component for assisting the puncture needle (103) in puncturing is disposed inside the hand-held tube (101); The telescopic assembly comprises a mounting circular plate (201) arranged inside the hand-held cylinder (101), one end of the puncture needle (103) is fixed to the mounting circular plate (201), a push rod (202) is slidably connected to the hand-held cylinder (101), one end of the push rod (202) is fixed to the mounting circular plate (201), and a push pin (203) is fixed to the other end of the push rod (202); The power storage assembly comprises an annular baffle (301) disposed inside the hand-held cylinder (101) and used to block the movement of the mounting circular plate (201); a sliding assembly for slidably connecting to the annular baffle (301) is disposed on the hand-held cylinder (101); a fixing plate (302) is slidably connected inside the hand-held cylinder (101); the push rod (202) is slidably connected to the fixing plate (302); the mounting circular plate (201) is located between the annular baffle (301) and the fixing plate (302); and the push rod ( A force storage spring (303) is sleeved on the outer side of the mounting plate (201) and the fixing plate (302). The two ends of the force storage spring (303) are respectively arranged to abut against the mounting circular plate (201) and the fixing plate (302). A limit component for abutting against the mounting circular plate (201) during the force storage process is arranged inside the hand-held tube (101). The limit component is located between the annular baffle (301) and the fixing plate (302). The hand-held tube (101) is provided with an adaptive adjustment component for controlling the puncture force according to the puncture movement length during the force storage puncture process.

2. A tumor puncture biopsy medical device according to claim 1, characterized in that: The sliding assembly comprises a plurality of groups of slide grooves (401) provided on the hand-held tube (101), each group of the slide grooves (401) being evenly distributed in a ring shape on the hand-held tube (101), each group of the slide grooves (401) being slidably connected to a slider (402), and one end of each group of the slider (402) being fixed to the annular baffle (301).

3. A tumor puncture biopsy medical device according to claim 2, characterized in that: The adaptive adjustment component comprises a plurality of linkage rods (501) slidably connected to the mounting circular plate (201), the two ends of the linkage rods (501) being fixed to the annular baffle (301) and the fixing plate (302) respectively, the outer side of the hand-held tube (101) being sleeved with a connecting ring (502) and a driving ring (503), the driving ring (503) being rotatably connected to the side opposite to the connecting ring (502) via a first rotating component, the inner side of the driving ring (503) being meshed and connected to the outer side of the hand-held tube (101) via a threaded connection, and the other end of each group of the sliders (402) being fixed to the inner side of the connecting ring (502).

4. A medical device for tumor puncture biopsy according to claim 3, characterized in that: The first rotating assembly comprises a first annular groove (601) formed on one side of the driving ring (503); a first annular plate (602) is rotatably connected to the first annular groove (601); the first annular plate (602) is fixed to one side of the connecting ring (502); the cross-sections of the first annular groove (601) and the first annular plate (602) are T-shaped, and the driving ring (503), the first annular groove (601), the first annular plate (602) and the connecting ring (502) are concentrically arranged.

5. The medical device for tumor puncture biopsy according to claim 1, characterized in that: The limiting assembly comprises an annular cover (701) fixed inside the hand-held tube (101); a plurality of groups of limiting plates (702) for limiting against the mounting circular plate (201) are telescopically connected to the annular cover (701) via an elastic component, and each group of limiting plates (702) is evenly distributed in a ring shape; one side of the limiting plate (702) is provided with an inclined surface (703) for transmitting against the mounting circular plate (201); and an unlocking assembly for assisting unlocking after limiting is provided on the annular cover (701).

6. A medical device for tumor puncture biopsy according to claim 5, characterized in that: The elastic component comprises a plurality of groups of sleeves (801) fixed on the inner side of the annular cover (701), a slide rod (802) being slidably connected to the sleeves (801), one end of the slide rod (802) being fixed to the limit plate (702), and a connecting spring (803) being sleeved on the outer side of each group of the sleeves (801), and two ends of the connecting spring (803) being respectively disposed in contact with the inner wall of the annular cover (701) and the limit plate (702).

7. The medical device for tumor puncture biopsy according to claim 5, characterized in that: The unlocking assembly comprises an operating ring (901) arranged inside the annular cover (701); a second rotating assembly for assisting the operating ring (901) in rotatable connection is arranged between the operating ring (901) and the inside of the annular cover (701); a plurality of groups of first inclined grooves (902) are provided on the operating ring (901); a first transmission pin (903) is slidably connected to each group of the first inclined grooves (902); one end of each group of the first transmission pins (903) is respectively fixed to one side of each group of the limiting plates (702); and a driving assembly for rotating the operating ring (901) is arranged inside the annular cover (701).

8. A medical device for tumor puncture biopsy according to claim 7, characterized in that: The driving assembly comprises a second inclined groove (1001) formed on the operating ring (901), a second transmission pin (1003) being slidably connected to the second inclined groove (1001), a mounting plate (1002) being arranged inside the annular cover (701), one end of the second transmission pin (1003) being fixed on the mounting plate (1002), and a pushing assembly for pushing the mounting plate (1002) being arranged on the hand-held tube (101).

9. A medical instrument for tumor puncture biopsy according to claim 8, characterized in that: The pushing assembly comprises a mounting tube (1101) fixed to the outside of the hand-held tube (101); a spline rod (1102) is slidably connected to the mounting tube (1101) via a spline groove; one end of the spline rod (1102) passes through the interior of the annular cover (701) and is fixed to the mounting plate (1002); a fixing pin (1103) is fixed to the other end of the spline rod (1102); and a return spring (1104) is sleeved on the outside of the spline rod (1102).

10. The medical device for tumor puncture biopsy according to claim 7, characterized in that: The second rotating assembly comprises a second annular groove (1201) formed on the inner side of the operating ring (901); a second annular plate (1202) is rotatably connected to the second annular groove (1201); the second annular plate (1202) is sleeved and fixed inside the annular cover (701); the cross-sections of the second annular groove (1201) and the second annular plate (1202) are T-shaped; and the operating ring (901), the second annular groove (1201), the second annular plate (1202) and the annular cover (701) are concentrically arranged.

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