Auxiliary device of medical puncture needle for tumor intervention

Abstract

The invention relates to the technical field of medical auxiliary instruments, in particular to an auxiliary device of a medical puncture needle for tumor intervention, which comprises a support and a plurality of fitting seats, the support is provided with an adjusting support, and the fitting seats are arranged on one side of the adjusting support; the independent rotating mechanism is arranged among the plurality of laminating seats; the multiple limiting mechanisms are arranged on the independent rotating mechanism; the synchronizing mechanism is arranged between the adjusting bracket and the independent rotating mechanism; different from the prior art, when a worker uses the laminating machine, the synchronous mechanism is used for driving the multiple laminating seats to rotate synchronously, the limiting mechanism is used for limiting the positions of the multiple laminating seats, preliminary integral extrusion is carried out, the independent rotating mechanism is used for driving the laminating seats to rotate independently, and local extrusion is selectively carried out; the device is simple and convenient to operate, the convenience of extruding and fixing the breast part is improved, the fitting seat is quickly restored to the original position through the limiting mechanism, extruding and fixing on the breast part are relieved, the extruding time on the breast is shortened, and the discomfort of a patient is relieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary equipment, and in particular to an auxiliary device for a medical puncture needle for tumor intervention. Background Art

[0002] Breast tumors are tumors that grow in the breast and are divided into benign, borderline and malignant tumors. Breast tumor puncture usually refers to an examination method in which a fine or thick needle is used to obtain cells or tissues from the breast lesion for pathological diagnosis to determine whether the tumor is benign or malignant. A puncture biopsy can determine the nature of the breast lump, whether it is a benign tumor or a malignant tumor, and provide a basis for subsequent treatment. If the puncture result is benign, the patient can undergo surgery to remove the tumor as prescribed by the doctor. If the result is malignant, in addition to surgery, comprehensive treatment such as chemotherapy and radiotherapy is required. During the puncture, the puncture needle needs to be inserted into the lesion under the guidance of ultrasound, mammography or MRI, and a small amount of tissue or cells is removed for pathological examination. Because the breast is relatively soft, it often needs to be fixed during puncture to keep the tumor in the appropriate position. The breast is often fixed by manual fixation or auxiliary equipment (breast fixation frame or breast support) to compress and fix it.

[0003] The existing method of manually fixing the breast during breast tumor puncture has poor accuracy and is labor-intensive. The use of auxiliary equipment (breast fixation frame or breast support) also has the problems of complicated operation, inconvenient adjustment, and complex repositioning. Therefore, we propose an auxiliary device for medical puncture needles for tumor intervention. Summary of the Invention

[0004] A technical problem to be solved by this application is: how to improve the convenience of squeezing and fixing the breast area.

[0005] To solve the above technical problems, the present invention provides an auxiliary device for a medical puncture needle for tumor intervention, comprising a support, an adjustment bracket provided on the support, and: A fitting seat, wherein a plurality of fitting seats are provided, and the plurality of fitting seats are all provided on one side of the adjustment bracket; A single rotation mechanism, used for driving the corresponding fitting seat to rotate independently, and arranged between the plurality of fitting seats; A limiting mechanism is used to control the single-rotation mechanism, limit the positions of the plurality of fitting seats, and drive the plurality of fitting seats to return to their original positions. A plurality of limiting mechanisms are provided, and the plurality of limiting mechanisms are all provided on the single-rotation mechanism. The synchronization mechanism is used to drive the multiple fitting seats to rotate synchronously, and is arranged between the adjustment bracket and the independent rotation mechanism.

[0006] In some embodiments, the single-rotation mechanism includes a connection disk disposed above a plurality of fitting seats, the connection disk being provided with a plurality of connection plates, and each of the plurality of connection plates being provided with a connection seat; A plurality of the connecting seats are each provided with a rotating assembly for driving the fitting seat to rotate.

[0007] In some embodiments, the rotating assembly includes a cross bar rotatably arranged on a connecting seat, a turntable is provided at one end of the cross bar, a first bevel gear is provided at the other end of the cross bar, a vertical rod is rotatably arranged on the connecting plate, a second bevel gear is provided on the vertical rod, the second bevel gear is engaged with the first bevel gear, a worm is provided on the vertical rod, an output shaft is rotatably arranged on the connecting seat, a worm gear is provided on the output shaft, the worm gear is engaged with the worm, a support frame is provided on the output shaft, and the fitting seat is provided on the support frame.

[0008] In some embodiments, the limiting mechanism includes a ratchet provided on the crossbar, a protruding rod provided on the connecting seat, a pawl rotatably provided on the protruding rod, and a torsion spring provided between the pawl and the protruding rod; The connecting seat is provided with an unlocking assembly for releasing the position restriction of the ratchet and the crossbar; The connecting seat is provided with a reset component for driving the corresponding fitting seat to return to its original position.

[0009] In some embodiments, the unlocking assembly includes a convex plate arranged on the connecting seat, a push column is slidably arranged on the convex plate, and a first spring is arranged between the push column and the convex plate.

[0010] In some embodiments, the reset assembly includes an arc seat arranged on the connecting seat, a coil spring is arranged in the arc seat, the inner end of the coil spring is connected to the vertical pole, and the outer end of the coil spring is connected to the inner side surface of the arc seat.

[0011] In some embodiments, the synchronization mechanism includes a mounting seat provided on a plurality of connecting seats, and the mounting seat is provided on the adjustment bracket; The mounting seat is provided with a linkage assembly for providing a driving force for driving the multiple fitting seats to rotate synchronously; The connecting disk is provided with a switching component for synchronously driving the plurality of fitting seats to rotate when the linkage component is in operation.

[0012] In some embodiments, the linkage assembly includes a driving gear arranged on a mounting seat, a circular ring is provided on the driving gear, and the driving gear is rotatably connected to the mounting seat through the circular ring, a plurality of transmission shafts are rotatably provided on the mounting seat, a plurality of the transmission shafts are provided with transmission gears, and a plurality of the transmission gears are engaged with the driving gear, a driving shaft is provided on the driving gear, two guide bars are provided on the driving shaft, and the driving shaft is slidingly connected to the driving gear through the two guide bars, and a rotating plate is provided at one end of the driving shaft.

[0013] In some embodiments, the switching assembly includes a sliding column slidably arranged on a connecting plate, a moving plate is arranged on the sliding column, a second spring is sleeved on the sliding column, a plurality of moving plates are arranged on the moving plate, a plurality of the transmission shafts are slidably provided with sleeves, a plurality of the sleeves are provided with two retaining rings, a plurality of the sleeves are provided with a plurality of active wedge strips, a plurality of the vertical rods are provided with vertical covers, a plurality of the vertical covers are provided with a plurality of driven wedge strips, and the plurality of moving plates are respectively located between the two retaining rings on the plurality of sleeves.

[0014] The present invention has at least the following beneficial effects: 1. Different from the existing technology, when using the device, the staff first uses the synchronization mechanism to drive multiple fitting seats to rotate synchronously, uses the limiting mechanism to limit the positions of the multiple fitting seats, and performs preliminary overall compression on the breast area. Then, according to the specific situation, the independent rotation mechanism is used to drive the corresponding fitting seats to rotate individually, and selectively perform local compression to make the internal tumor tissue reach the appropriate position. The operation is simple and the convenience of compressing and fixing the breast area is improved.

[0015] 2. Different from the existing technology, when in use, the staff can use the limiting mechanism to control the independent rotation mechanism, so that the fitting seat can quickly return to its original position, release the squeezing and fixation of the breast area, reduce the squeezing time of the breast, and alleviate the patient's discomfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic structural diagram of the fitting seat, independent rotation mechanism, limiting mechanism, and synchronization mechanism of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the local cross-section structure; Figure 4 For the present invention Figure 3 Schematic diagram of the local cross-section structure; Figure 5 For the present invention Figure 4 Schematic diagram of the local cross-section structure; Figure 6This is a schematic diagram of the structure of the connecting seat, ratchet, and unlocking assembly of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of area A; Figure 8 This is a schematic diagram of the mounting base and linkage assembly structure of the present invention; Figure 9 For the present invention Figure 8 Another structural diagram; Figure 10 This is a schematic diagram of the structure of the drive gear, ring, drive shaft, guide bar, and rotating plate of the present invention; Figure 11 This is a schematic diagram of the structure of the transmission shaft, transmission gear, sleeve, retaining ring, and active wedge strip of the present invention; Figure 12 This is a structural diagram of the connecting disc, connecting plate, sliding column, movable disc, second spring and movable plate of the present invention.

[0017] In the figure: 1. Support; 2. Adjustment bracket; 3. Fitting seat; 4. Independent rotation mechanism; 41. Connecting plate; 42. Connecting plate; 43. Connecting seat; 5. Limiting mechanism; 51. Ratchet; 52. Protruding rod; 53. Pawl; 54. Torsion spring; 6. Synchronizing mechanism; 61. Mounting seat; 7. Rotating assembly; 71. Crossbar; 72. Turntable; 73. First bevel gear; 74. Vertical rod; 75. Second bevel gear; 76. Worm; 77. Output shaft; 78. Worm gear; 79. Support frame; 8. Unlocking assembly; 81. Protruding plate; 82. Thrust column; 83. First spring; 9. Reset assembly; 91. Arc seat; 92. Coil spring; 10. Linkage assembly; 101. Drive gear; 102. Circular ring; 103. Transmission shaft; 104. Transmission gear; 105. Drive shaft; 106. Guide bar; 107. Rotating plate; 11. Switching assembly; 111. Sliding column; 112. Moving plate; 113. Second spring; 114. Moving plate; 115. Sleeve; 116. Retaining ring; 117. Active wedge strip; 118. Vertical cover; 119. Driven wedge strip. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0019] See also Figures 1-12 , the present invention provides a technical solution: An auxiliary device for a medical puncture needle for tumor intervention includes a support 1, on which an adjustment bracket 2 is provided. The support 1 is used to mount the adjustment bracket 2 on a bed or a detection device. The adjustment bracket 2 can adjust the height and angle, etc. The specific principles, methods and steps of installation, height and angle adjustment are not described here. The device also includes: A plurality of fitting seats 3 are provided, and the plurality of fitting seats 3 are all provided on one side of the adjustment bracket 2; The independent rotation mechanism 4 is used to drive the corresponding fitting seat 3 to rotate independently, and is arranged between the multiple fitting seats 3; The limiting mechanism 5 is used to control the independent rotation mechanism 4, limit the positions of the multiple fitting seats 3, and drive the multiple fitting seats 3 to return to their original positions. There are multiple limiting mechanisms 5, and the multiple limiting mechanisms 5 are all arranged on the independent rotation mechanism 4; The synchronization mechanism 6 is used to drive the multiple fitting seats 3 to rotate synchronously, and is arranged between the adjustment bracket 2 and the independent rotation mechanism 4.

[0020] See also Figure 2-Figure 4 The independent rotation mechanism 4 includes a connecting disk 41 arranged above the multiple fitting seats 3, a multiple connecting plates 42 are arranged on the connecting disk 41, and a connecting seat 43 is arranged on each of the multiple connecting plates 42.

[0021] See also Figure 3-Figure 5 , multiple connecting seats 43 are provided with a rotating assembly 7 for driving the fitting seat 3 to rotate; the rotating assembly 7 includes a cross bar 71 rotatably set on the connecting seat 43, a turntable 72 is provided at one end of the cross bar 71, a first bevel gear 73 is provided at the other end of the cross bar 71, a vertical rod 74 is rotatably set on the connecting plate 42, a second bevel gear 75 is provided on the vertical rod 74, the second bevel gear 75 is meshed with the first bevel gear 73, a worm 76 is provided on the vertical rod 74, an output shaft 77 is rotatably set on the connecting seat 43, a worm gear 78 is provided on the output shaft 77, the worm gear 78 is meshed with the worm 76, and a support frame 7 is provided on the output shaft 77 9. The fitting seat 3 is set on the support frame 79; the rotating turntable 72 drives the cross bar 71 and the first bevel gear 73 to rotate, the first bevel gear 73 drives the second bevel gear 75, the vertical rod 74, and the worm 76 to rotate, the worm 76 drives the worm wheel 78, the output shaft 77, and the support frame 79 to rotate, and the support frame 79 drives the fitting seat 3 to rotate. After the fitting seat 3 rotates, the breast area is squeezed and fixed; the transmission ratio between the worm 76 and the worm wheel 78 is reduced, so that the rotation angle of the fitting seat 3 is more accurate; the fitting seat 3 can be made of materials such as silicone and polyethylene, and can be adaptively deformed to fit the breast area while ensuring safety.

[0022] See also Figure 5-Figure 7The limiting mechanism 5 includes a ratchet 51 arranged on the cross bar 71, a protruding rod 52 is provided on the connecting seat 43, a pawl 53 is rotatably provided on the protruding rod 52, and a torsion spring 54 is provided between the pawl 53 and the protruding rod 52; the cross bar 71 drives the ratchet 51 to rotate, and after the ratchet 51 rotates, it is blocked by the pawl 53 and cannot be reversed. At the same time, combined with the self-locking effect of the worm gear 78 and the worm 76, the fitting seat 3 is prevented from being reversed by the reaction force, thereby ensuring that the fitting seat 3 effectively squeezes and fixes the breast area.

[0023] See also Figure 5-Figure 7 , an unlocking assembly 8 is provided on the connecting seat 43 for releasing the position limit of the ratchet 51 and the cross bar 71; the unlocking assembly 8 includes a convex plate 81 provided on the connecting seat 43, and a push column 82 is slidably provided on the convex plate 81, and a first spring 83 is provided between the push column 82 and the convex plate 81; the push column 82 is pressed to push the pawl 53 to rotate, and the pawl 53 releases the obstruction to the ratchet 51 and the cross bar 71 after rotation; if it is necessary to reverse the fitting seat 3 to reduce the squeezing effect, the push column 82 is pressed to release the obstruction to the ratchet 51 and the cross bar 71, while controlling the turntable 72 and the cross bar 71 and reversing.

[0024] See also Figure 4-Figure 5 , a reset assembly 9 is provided on the connecting seat 43, which is used to drive the corresponding fitting seat 3 to return to its original position; the reset assembly 9 includes an arc seat 91 provided on the connecting seat 43, and a coil spring 92 is provided in the arc seat 91, the inner end of the coil spring 92 is connected to the vertical rod 74, and the outer end of the coil spring 92 is connected to the inner side surface of the arc seat 91; when the fitting seat 3 is squeezed, the vertical rod 74 rotates to drive the coil spring 92 to deform and store force; when the puncture is completed, the push column 82 is pressed to release the obstruction of the ratchet 51 and the cross bar 71, and the coil spring 92 drives the vertical rod 74 to return to its original position, and then drives the fitting seat 3 to reverse and return to its original position; in this way, the fitting seat 3 can be quickly restored to its original position, the squeezing of the breast area can be released, the squeezing time of the breast can be reduced, and the patient's discomfort can be alleviated.

[0025] See also Figure 2 The synchronization mechanism 6 includes a mounting seat 61 arranged on a plurality of connecting seats 43 , and the mounting seat 61 is arranged on the adjustment bracket 2 .

[0026] See also Figure 2 、 Figures 8-10, a linkage assembly 10 is provided on the mounting seat 61, which is used to provide driving force for driving multiple fitting seats 3 to rotate synchronously; the linkage assembly 10 includes a driving gear 101 provided on the mounting seat 61, and a ring 102 is provided on the driving gear 101, and the driving gear 101 is rotatably connected to the mounting seat 61 through the ring 102, and a plurality of transmission shafts 103 are rotatably provided on the mounting seat 61, and a plurality of transmission shafts 103 are provided with transmission gears 104, and a plurality of transmission gears 104 are meshed with the driving gear 101, and a driving shaft 105 is provided on the driving gear 101, and two guide bars 106 are provided on the driving shaft 105, and the driving shaft 105 is slidingly connected to the driving gear 101 through the two guide bars 106, and a rotating plate 107 is provided at one end of the driving shaft 105; rotating the rotating plate 107 drives the driving shaft 105 and the two guide bars 106 to rotate, and the two guide bars 106 drive the driving gear 101 to rotate, and the driving gear 101 drives multiple transmission gears 104 and the transmission shaft 103 to rotate.

[0027] See also Figure 4-Figure 5 、 Figure 9 、 Figure 11-12 , a switching assembly 11 is provided on the connecting disk 41, which is used to synchronously drive the multiple fitting seats 3 to rotate when the linkage assembly 10 is running; the switching assembly 11 includes a sliding column 111 slidably arranged on the connecting disk 41, a movable disk 112 is provided on the sliding column 111, a second spring 113 is sleeved on the sliding column 111, a plurality of movable plates 114 are provided on the movable disk 112, a plurality of transmission shafts 103 are slidably provided with sleeves 115, a plurality of sleeves 115 are provided with two retaining rings 116, a plurality of active wedges 117 are provided on the plurality of sleeves 115, a plurality of vertical rods 74 are provided with vertical covers 118, a plurality of vertical covers 118 are provided with a plurality of driven wedges 119, and a plurality of movable plates 114 are respectively located between the two retaining rings 116 on the plurality of sleeves 115; the sleeve 115 can slide on the transmission shaft 103, and the transmission shaft 103 drives the sleeve 115 to rotate, and the sleeve 115 and the transmission shaft 10 3 will not produce relative rotation; in the initial position, the multiple active wedge strips 117 on the sleeve 115 do not enter the vertical cover 118. At this time, the transmission shaft 103 drives the sleeve 115 and the multiple active wedge strips 117 to rotate, which will not drive the multiple driven wedge strips 119, the vertical cover 118, and the vertical rod 74 to rotate, and thus will not drive the fitting seat 3 to rotate; pressing the rotating plate 107 downward drives the driving shaft 105 to move downward, the driving shaft 105 pushes the movable disk 112, the multiple movable plates 114, and the sliding column 111 to move downward, and the multiple movable plates 114 drive the corresponding two retaining rings 116 and sleeve 115 to move downward. After the multiple sleeves 115 move downward, the corresponding multiple active wedge strips 117 enter the corresponding vertical cover 118. At this time, the multiple transmission shafts 103 drive the corresponding sleeves 115 and the multiple active wedge strips 117 to rotate, which will drive the multiple driven wedge strips 119, the vertical cover 118, and the vertical rod 74 to rotate, and thus drive the multiple fitting seats 3 to rotate synchronously.

[0028] When in use, the support 1 is used to install the adjustment bracket 2 on the bed or the detection equipment, and the adjustment bracket 2 is used to adjust the mounting seat 61 and the plurality of fitting seats 3 to appropriate positions.

[0029] In the early stage, it is necessary to drive multiple fitting seats 3 to rotate synchronously to reach the breast area synchronously for preliminary overall squeezing. The specific operation is as follows: press the rotating plate 107 downward to drive the driving shaft 105 to move downward, the driving shaft 105 pushes the moving disk 112, multiple moving plates 114, and the sliding column 111 to move downward, and the multiple moving plates 114 drive the corresponding two retaining rings 116 and sleeves 115 to move downward. After the multiple sleeves 115 move downward, the corresponding multiple active wedges 117 enter the corresponding vertical covers 118; then rotate the rotating plate 107 to drive the driving shaft 105, the two The guide bar 106 rotates, and the two guide bars 106 drive the driving gear 101 to rotate. The driving gear 101 drives multiple transmission gears 104 and the transmission shaft 103 to rotate. The multiple transmission shafts 103 drive the corresponding sleeves 115 and multiple active wedges 117 to rotate. The multiple active wedges 117 drive the corresponding multiple driven wedges 119, the vertical cover 118, and the vertical rod 74 to rotate. The vertical rod 74 drives the worm 76 to rotate. The worm 76 drives the worm wheel 78, the output shaft 77, and the support frame 79 to rotate. The multiple support frames 79 drive the multiple fitting seats 3 to rotate synchronously.

[0030] After the initial overall squeezing, local squeezing can be selectively performed according to the instructions of ultrasound, mammography or nuclear magnetic resonance, so that the internal tumor tissue reaches the appropriate position. The specific operation is as follows: rotating the turntable 72 drives the crossbar 71 and the first bevel gear 73 to rotate, the first bevel gear 73 drives the second bevel gear 75, the vertical rod 74, and the worm 76 to rotate, the worm 76 drives the worm wheel 78, the output shaft 77, and the support frame 79 to rotate, and the support frame 79 drives the fitting seat 3 to rotate, and the corresponding fitting seat 3 rotates to squeeze and fix the breast area; in this process, the crossbar 71 drives the ratchet 51 to rotate, and the ratchet 51 is ratcheted after rotating. The blocking of the claw 53 cannot be reversed, and combined with the self-locking effect of the worm wheel 78 and the worm 76, the fitting seat 3 is prevented from being reversed by the reaction force, thereby ensuring that the fitting seat 3 effectively squeezes and fixes the breast area; when the fitting seat 3 is squeezing, the vertical rod 74 rotates to drive the coil spring 92 to deform and store force; when the puncture is completed, the push column 82 is pressed to release the blocking of the ratchet 51 and the cross bar 71, and the coil spring 92 drives the vertical rod 74 to return to its original position, and then drives the fitting seat 3 to reverse and return to its original position; in this way, the fitting seat 3 can be quickly restored to its original position, the squeezing of the breast area can be released, the squeezing time of the breast can be reduced, and the patient's discomfort can be alleviated.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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 terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0032] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for a medical puncture needle for tumor intervention, comprising a support (1), an adjustment bracket (2) being provided on the support (1), and characterized in that: Also included are: A fitting seat (3), wherein a plurality of fitting seats (3) are provided, and the plurality of fitting seats (3) are all provided on one side of the adjustment bracket (2); A single rotation mechanism (4), used for driving the corresponding fitting seat (3) to rotate independently, and arranged between the plurality of fitting seats (3); A limiting mechanism (5) is used to control the single-rotation mechanism (4), to limit the positions of the plurality of fitting seats (3), and to drive the plurality of fitting seats (3) to return to their original positions, and a plurality of limiting mechanisms (5) are provided, and the plurality of limiting mechanisms (5) are all provided on the single-rotation mechanism (4); The synchronization mechanism (6) is used to drive the plurality of fitting seats (3) to rotate synchronously, and is arranged between the adjustment bracket (2) and the independent rotation mechanism (4).

2. The auxiliary device for a medical puncture needle for tumor intervention according to claim 1, characterized in that: The single-rotation mechanism (4) comprises a connection disk (41) arranged above the plurality of fitting seats (3), the connection disk (41) being provided with a plurality of connection plates (42), and the plurality of connection plates (42) being provided with connection seats (43); A plurality of the connecting seats (43) are each provided with a rotating assembly (7) for driving the fitting seat (3) to rotate.

3. The auxiliary device for a medical puncture needle for tumor intervention according to claim 2, characterized in that: The rotating assembly (7) includes a crossbar (71) rotatably arranged on the connecting seat (43), a rotating disk (72) is provided at one end of the crossbar (71), a first bevel gear (73) is provided at the other end of the crossbar (71), a vertical rod (74) is rotatably arranged on the connecting plate (42), a second bevel gear (75) is provided on the vertical rod (74), the second bevel gear (75) is meshed with the first bevel gear (73), a worm (76) is provided on the vertical rod (74), an output shaft (77) is rotatably arranged on the connecting seat (43), a worm gear (78) is provided on the output shaft (77), the worm gear (78) is meshed with the worm (76), a support frame (79) is provided on the output shaft (77), and the fitting seat (3) is provided on the support frame (79).

4. The auxiliary device for a medical puncture needle for tumor intervention according to claim 3, characterized in that: The limiting mechanism (5) includes a ratchet (51) arranged on a crossbar (71), a protruding rod (52) is arranged on the connecting seat (43), a pawl (53) is rotatably arranged on the protruding rod (52), and a torsion spring (54) is arranged between the pawl (53) and the protruding rod (52); An unlocking assembly (8) is provided on the connecting seat (43) for releasing the position restriction of the ratchet (51) and the crossbar (71); The connecting seat (43) is provided with a reset assembly (9) for driving the corresponding fitting seat (3) to return to its original position.

5. The auxiliary device for a medical puncture needle for tumor intervention according to claim 4, characterized in that: The unlocking assembly (8) comprises a convex plate (81) arranged on the connecting seat (43), a push column (82) is slidably arranged on the convex plate (81), and a first spring (83) is arranged between the push column (82) and the convex plate (81).

6. The auxiliary device for a medical puncture needle for tumor intervention according to claim 5, characterized in that: The reset assembly (9) comprises an arc seat (91) arranged on the connecting seat (43), a coil spring (92) being arranged in the arc seat (91), an inner end of the coil spring (92) being connected to the vertical rod (74), and an outer end of the coil spring (92) being connected to the inner side surface of the arc seat (91).

7. The auxiliary device for a medical puncture needle for tumor intervention according to claim 6, characterized in that: The synchronization mechanism (6) comprises a mounting seat (61) arranged on a plurality of connecting seats (43), and the mounting seat (61) is arranged on the adjustment bracket (2); The mounting seat (61) is provided with a linkage assembly (10) for providing a driving force for driving the plurality of fitting seats (3) to rotate synchronously; A switching assembly (11) is provided on the connecting disk (41) for synchronously driving the plurality of fitting seats (3) to rotate when the linkage assembly (10) is in operation.

8. The auxiliary device for a medical puncture needle for tumor intervention according to claim 7, characterized in that: The linkage assembly (10) includes a driving gear (101) arranged on a mounting seat (61), a circular ring (102) being arranged on the driving gear (101), the driving gear (101) being rotatably connected to the mounting seat (61) via the circular ring (102), a plurality of transmission shafts (103) being rotatably arranged on the mounting seat (61), a plurality of transmission shafts (103) being each provided with a transmission gear (104), a plurality of transmission gears (104) being each engaged with the driving gear (101), a driving shaft (105) being arranged on the driving gear (101), two guide bars (106) being arranged on the driving shaft (105), the driving shaft (105) being slidably connected to the driving gear (101) via the two guide bars (106), and a rotating plate (107) being arranged at one end of the driving shaft (105).

9. The auxiliary device for a medical puncture needle for tumor intervention according to claim 8, characterized in that: The switching assembly (11) includes a sliding column (111) slidably arranged on a connecting disk (41), a movable disk (112) is arranged on the sliding column (111), a second spring (113) is sleeved on the sliding column (111), a plurality of movable plates (114) are arranged on the movable disk (112), a plurality of sleeves (115) are slidably arranged on the plurality of transmission shafts (103), two retaining rings (116) are arranged on the plurality of sleeves (115), a plurality of active wedge strips (117) are arranged on the plurality of sleeves (115), a plurality of vertical rods (74) are provided with vertical covers (118), a plurality of vertical covers (118) are provided with a plurality of driven wedge strips (119), and the plurality of movable plates (114) are respectively located between the two retaining rings (116) on the plurality of sleeves (115).

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