A positioning device for breast lesion puncture

Abstract

The present invention relates to the technical field of medical auxiliary tools, and in particular to a positioning device for breast lesion puncture, comprising: a bracket and positioning structures installed at both ends of the bracket; a vacuum component is arranged in the middle of the bracket, and two positioning structures are connected at both sides of the vacuum component to achieve negative pressure adsorption on the human body; a lifting component for lifting the breast is arranged below the vacuum component, and a guide component for guiding the positioning puncture needle is also rotatably connected to the outer side of the vacuum component. In the present invention, two positioning structures are used for negative pressure adsorption on the human body to achieve positioning and fixing of the entire bracket, and at the same time, the lifting component is designed to perform negative pressure lifting on the nipple of the patient's breast, so as to pull the breast upward to complete the shaping and positioning of the breast, thereby solving the problem of collapse and deviation of the breast due to lack of support affecting the accuracy of puncture in the traditional puncture positioning method.

Description

Technical Field

[0001] The invention relates to the technical field of medical auxiliary tools, and in particular to a positioning device for breast lesion puncture. Background Art

[0002] Breast surgery is an important branch of clinical surgery, focusing on the diagnosis and treatment of breast diseases. Breast diseases include breast infection, breast tumors, etc. Breast tumors, especially breast cancer, seriously threaten women's health and life. With the changes in lifestyle and environmental factors, the incidence of breast tumors is on the rise.

[0003] In the treatment of breast tumors, puncture surgery is a common diagnostic and treatment method. Puncture surgery usually requires the use of a puncture needle and a positioning device for precise operation. However, in actual operation, the accuracy of puncture surgery is affected to a certain extent due to differences in patient age, breast sagging, and breast tumor location.

[0004] Specifically, when the patient lies flat, the breasts may deform flat, especially for patients with sagging breasts. This deformation makes it relatively difficult to determine the location of the breast tumor, especially when the tumor is close to the side of the breast, which makes puncture deviation or dislocation more likely, thus affecting the accuracy of puncture positioning.

[0005] Therefore, in order to further improve the accuracy of existing needle puncture, we propose a positioning device for breast lesion puncture. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art that when a patient lies flat, the breast may be deformed into a flat shape, which may easily cause puncture deviation or dislocation, and to propose a positioning device for breast lesion puncture.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A positioning device for breast lesion puncture is designed, comprising: A bracket and a positioning structure installed at both ends of the bracket; A vacuum component is provided in the middle of the bracket, and the two positioning structures are connected on both sides of the vacuum component to achieve negative pressure adsorption on the human body; A lifting component for lifting the breast is arranged below the vacuum component, and a guide component for guiding and positioning the puncture needle is rotatably connected to the outer side of the vacuum component.

[0008] Furthermore, the positioning structure includes an outward expansion portion formed at both ends of the bracket, and the bottom of the outward expansion portion is connected to a positioning suction cup; The interior of the outward expansion portion has a cavity, and air passages connecting the cavity and the vacuum component are arranged on both sides of the bracket.

[0009] Further, the vacuum assembly includes a vacuum cylinder fixed in the bracket; The upper end of the vacuum cylinder is connected to the negative pressure device through a joint piece, wherein the inner side of the vacuum cylinder is provided with two through holes connected to the airway.

[0010] Furthermore, the lifting assembly includes a hollow tube movably plugged into the bottom of the vacuum cylinder, the bottom of the hollow tube is connected to a lifting suction cup, and the end of the hollow tube that slides on the vacuum cylinder is sleeved with a piston.

[0011] Furthermore, a valve control component is also provided in the vacuum cylinder, and the valve control component is used to control the on-off of the air paths of the two through holes.

[0012] Furthermore, the valve control assembly includes a button movably plugged into the front end of the vacuum cylinder, a shielding ring is slidably disposed inside the vacuum cylinder, and a spring is disposed between the shielding ring and the inner wall of the vacuum cylinder; Air holes matching the through hole are provided on both sides of the shielding ring, an opening is provided in the middle of the shielding ring, and a wedge-shaped block plugged into the opening is provided at the inner end of the button.

[0013] Further, the guide assembly includes a sleeve rotatably connected to the outside of the vacuum cylinder, and the sleeve is circumferentially locked with the vacuum cylinder through a locking member; An arc frame is fixedly connected to the outer side of the sleeve, a slip ring is movably connected to the inner side of the arc frame, a guide tube is fixedly installed on the front side of the slip ring, and a locking assembly is arranged between the slip ring and the arc frame.

[0014] Furthermore, the locking assembly includes positioning notches provided on both side walls inside the arc-shaped frame, and a plurality of notches are provided on the end surface of the slip ring, wherein locking blocks are movably inserted in the notches, and the locking blocks are engaged with the notches; A driving rod is movably inserted at the rear end of the slip ring, and the driving rod is used to drive the plurality of locking blocks to move along the radial direction of the slip ring.

[0015] Furthermore, the driving rod includes a frustum portion, a cylindrical portion and a pressing end, the frustum portion abuts against the plurality of locking blocks to move outward along the notch, and a magnetic attraction member for magnetically attracting the plurality of locking blocks to retract and move inward is embedded on the cylindrical portion; A compression spring is fixedly connected between the end of the frustum portion and the inner hole of the slip ring.

[0016] Furthermore, the bracket is an arc-shaped structure, and the two positioning structures are symmetrically arranged along the central axis of the bracket.

[0017] The present invention proposes a positioning device for breast lesion puncture, which has the beneficial effect that: in the present invention, two positioning structures are used for negative pressure adsorption on the human body to achieve the positioning and fixation of the entire bracket, and at the same time, the lifting component is designed to perform negative pressure lifting on the nipple of the patient's breast, so as to pull the breast upward to complete the shaping and positioning of the breast, thereby solving the problem of collapse and deviation of the breast due to lack of support affecting the accuracy of puncture in traditional puncture positioning methods. After positioning is completed, the puncture needle can be inserted along the guide component to achieve the effect of precise puncture of the lesion. The operation is simple and convenient, which greatly improves the accuracy and convenience of puncture positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The three-dimensional Figure 1 ; Figure 2 The three-dimensional Figure 2 ; Figure 3 It is a schematic diagram of the positioning suction cup structure of the present invention; Figure 4 It is a schematic diagram of the structure of the valve control assembly of the present invention; Figure 5 is a cross-sectional view of the present invention; Figure 6 It is a schematic diagram of the button structure of the present invention; Figure 7 It is a schematic diagram of the shielding ring structure of the present invention; Figure 8 It is a schematic diagram of the structure of the guide assembly of the present invention; Fig. 9 It is a schematic diagram of the slip ring structure of the present invention; Fig.10 It is a cross-sectional view of the slip ring of the present invention.

[0019] In the figure: 1. bracket; 2. positioning structure; 21. expansion part; 22. positioning suction cup; 23. airway; 3. vacuum assembly; 31. vacuum cylinder; 32. through hole; 33. valve control assembly; 331. button; 332. shielding ring; 333. spring; 334. air hole; 335. opening; 336. wedge block; 4. lifting assembly; 41. hollow tube; 42. lifting suction cup; 43. piston; 5. guide assembly; 51. sleeve; 511. locking member; 52. arc frame; 53. slip ring; 54. guide tube; 55. locking assembly; 551. positioning notch; 552. notch; 553. locking block; 554. driving rod; 5541. cone part; 5542. cylindrical part; 5543. pressing end; 5544. magnetic suction member; 555. compression spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-10 An embodiment of the present invention discloses a positioning device for breast lesion puncture, which is used to solve the problem that the current positioning device cannot support and position the breast, resulting in the collapse of the breast when lying down and causing inaccurate puncture points. Specifically, the positioning device includes a bracket 1 and positioning structures 2 installed at both ends of the bracket 1. Specifically, the bracket 1 in this embodiment is an arc-shaped structure, and the two positioning structures 2 are symmetrically arranged along the central axis of the bracket 1; A vacuum component 3 is provided in the middle of the bracket 1, and the two positioning structures 2 are connected on both sides of the vacuum component 3 to achieve negative pressure adsorption on the human body, that is, the present invention adopts the design of two positioning structures 2 for negative pressure adsorption on the human body to achieve overall positioning and support of the alignment device, so as to facilitate subsequent puncture positioning operations; A lifting component 4 for lifting the breast is arranged below the vacuum component 3, and a guide component 5 for guiding and positioning the puncture needle is rotatably connected to the outer side of the vacuum component 3.

[0022] Reference Figure 1 , Figure 2 , Figure 3 In some embodiments, the positioning structure 2 of the present invention includes an outward expansion portion 21 formed at both ends of the bracket 1, and the bottom of the outward expansion portion 21 is connected to a positioning suction cup 22; The interior of the outward expansion portion 21 has a cavity, and the positioning suction cup 22 is connected to the cavity. It should be noted that the shape of the positioning suction cup 22 described in this embodiment is compatible with the outward expansion portion 21, the positioning suction cup 22 is a hollow structure, and the bottom is densely covered with suction holes, and air ducts 23 connecting the cavity and the vacuum component 3 are provided on both sides of the bracket 1.

[0023] Reference Figure 5 , based on the above embodiment, the vacuum assembly 3 in the present invention comprises a vacuum cylinder 31 fixed in the bracket 1; The upper end of the vacuum cylinder 31 is connected to the negative pressure device through a joint piece, wherein the inner side of the vacuum cylinder 31 is provided with two through holes 32 connected to the airway 23 .

[0024] That is to say, when the positioning device of the present invention is used, the vacuum cylinder 31 can be connected to an external negative pressure device through an air pipe to form a negative pressure inside the vacuum cylinder; Since the positioning suction cup 22 is connected to the vacuum cylinder 31 via the airway 23 and the through hole 32, when the vacuum cylinder 31 is connected to the negative pressure device, the positioning suction cup 22 can simultaneously generate negative pressure to adsorb the entire bracket 1 on the human body. Of course, technicians in the relevant field know that the entire bracket 1 can be adsorbed on the breast to be punctured before puncture.

[0025] Reference Figure 2 , Figure 5 Furthermore, the lifting assembly 4 in the embodiment of the present invention includes a hollow tube 41 movably inserted into the bottom of the vacuum cylinder 31, and the bottom of the hollow tube 41 is connected to a lifting suction cup 42. The hollow tube 41 slides on the end of the vacuum cylinder 31 and is equipped with a piston 43. It should be noted that the piston 43 described in this embodiment is fixedly connected to the hollow tube 41. Of course, it needs to keep rotating with the vacuum cylinder 31, so as to facilitate the subsequent rotation adjustment capability of the bracket 1. Of course, in order to prevent the hollow tube 41 from falling off from the bottom of the vacuum cylinder 31, an inward step can also be provided at the bottom of the vacuum cylinder 31 in this embodiment to limit the movable position of the hollow tube 41.

[0026] Specifically, in this embodiment, a lifting suction cup 42 is designed to lift the nipple of the breast, so that the problem of puncture position deviation caused by breast collapse and deformation when lying down can be avoided. During the specific operation, the lifting suction cup 42 is first covered on the nipple. After the vacuum cylinder 31 is connected to the vacuum, the negative pressure enters the lifting suction cup 42 along the hollow tube 41. At this time, the lifting suction cup 42 tightly adsorbs the front end of the nipple, and the positioning suction cups 22 on both sides are adsorbed on the human body to support and position the entire bracket 1. Thereafter, when further negative pressure is generated, since the lifting suction cup 42 and the positioning suction cup 22 are both in a sealed state, the negative pressure will attract the piston 43 to move upward. When the piston 43 moves upward, it drives the lifting suction cup 42 to move upward, thus pulling the breast upward to complete the shaping and positioning of the breast, thus solving the problem of breast collapse and deviation without support affecting the accuracy of puncture. After the positioning is completed, the puncture needle can be inserted along the guide assembly 5 to achieve the effect of accurate puncture of the lesion.

[0027] Reference Figure 4 It should be noted that, considering that in the actual operation process, it is necessary to use an ultrasonic probe to image the patient's area, so in order to adjust the circumferential position of the bracket 1 after lifting, a valve control component 33 is also provided in the vacuum cylinder 31 in this embodiment, and the valve control component 33 is used to control the air path of the two through holes 32. That is, under normal conditions, the valve control component 33 does not cut off the through holes 32, so that the entire airway 23 is connected, and the positioning suction cup 22 can be adsorbed on the human body with the help of negative pressure. When ultrasonic positioning is performed, if the installation position of the bracket 1 interferes with the ultrasonic probe, the airway 23 can be closed by driving the valve control component 33. When the negative pressure of the positioning suction cup 22 is cut off, the entire bracket 1 can be rotated to adjust its position, thereby avoiding the above-mentioned interference.

[0028] Reference Figure 5 , Figure 6 , Figure 7 As a preference, the valve control assembly 33 in this embodiment includes a button 331 movably plugged into the front end of the vacuum cylinder 31, a shielding ring 332 is slidably disposed on the inner side of the vacuum cylinder 31, and a spring 333 is disposed between the shielding ring 332 and the inner wall of the vacuum cylinder 31; Reference Figure 5It should be specifically explained that, in this embodiment, a ring convex is fixedly installed inside the vacuum cylinder 31, the spring 333 abuts between the ring convex and the shielding ring 332, and the shielding ring 332 can squeeze the spring 333 to move up and down inside the vacuum cylinder 31, wherein both sides of the shielding ring 332 are provided with air holes 334 adapted to the through hole 32, the middle part of the shielding ring 332 has an opening 335, and the inner end of the button 331 has a plug-in opening 33 5, the inclined surface of the wedge block 336 abuts against the opening 335, and when the button 331 is pressed, the wedge block 336 can abut against the above-mentioned opening 335, so as to drive the entire shielding ring 332 to move downward. It should be noted that the front end of the vacuum cylinder 31 described in the embodiment of the present invention has a step hole, and the button 331 has a limiting convex ring. The button 331 is inserted into the above-mentioned step hole and is limited by the limiting convex ring to prevent it from falling.

[0029] That is, in the initial state, the air hole 334 of the shielding ring 332 and the through hole 32 of the vacuum cylinder 31 are in relative positions, and the shielding ring 332 will not affect the conduction between the through hole 32 and the airway 23. When it is necessary to adjust the bracket 1 to avoid the ultrasonic probe, the button 331 can be pressed, and the wedge block 336 on the tail end of the button 331 abuts against the opening 335. Under the abutment of the wedge block 336, the entire shielding ring 332 begins to move downward. At this time, the air hole 334 on the shielding ring 332 and the through hole 32 inside the vacuum cylinder 31 are misaligned with each other, so as to achieve the shielding and sealing of the through hole 32 and put the airway 23 in a cut-off state. At this time, the bracket 1 can be slightly lifted upward. Since the piston 43 and the vacuum cylinder 31 can rotate circumferentially, the circumferential position of the bracket 1 can be adjusted by rotating the bracket 1.

[0030] Of course, after the adjustment is completed, the shielding ring 332 is reset upward under the resistance of the spring 333, and the control button 331 is moved outward and reset with the help of the upward movement of the wedge block 336 and the opening 335.

[0031] In addition, in the present invention, in the process of adjusting the bracket 1, not only circumferential adjustment can be achieved, but also front, back, left and right position adjustment can be achieved. Since the lifting suction cup 42 still applies negative pressure suction to the breast in this state, this adjustment method can further adjust the direction of breast lifting traction to meet different traction direction requirements. At the same time, the position of the guide component 5 can also be adjusted to ensure that the guide component 5 can guide the puncture needle to enter at the correct position. The functions are diversified to meet the applicable needs in different scenarios.

[0032] Reference Figure 5In some embodiments, the guide assembly 5 of the present invention includes a sleeve 51 rotatably connected to the outside of the vacuum cylinder 31, and the sleeve 51 is circumferentially locked with the vacuum cylinder 31 through a locking member 511. Preferably, the locking member 511 in this embodiment is configured as a bolt, and the bolt is threadedly connected to the outside of the sleeve 51, and the circumferential position of the sleeve 51 is locked after the end thereof contacts the outer wall of the vacuum cylinder 31; Reference Figure 8 An arc frame 52 is fixedly connected to the outer side of the sleeve 51, and a slip ring 53 is movably connected to the inner side of the arc frame 52. It should be noted that the middle part of the slip ring 53 described in this embodiment is a cylindrical structure, and both ends thereof have stop parts. The front and rear of the slip ring 53 are stopped by the two stop parts to prevent it from escaping from the inside of the arc frame 52. A guide tube 54 is fixedly installed on the front side of the slip ring 53. The guide tube 54 is used to guide and position the puncture needle. A locking assembly 55 is provided between the slip ring 53 and the arc frame 52. When used specifically, the position of the slip ring 53 can be locked and fixed by the locking assembly 55 to ensure the stability and accuracy of puncture positioning.

[0033] Reference Figure 8 , Fig. 9 On the basis of the above-mentioned embodiment, the locking assembly 55 of the present invention includes positioning notches 551 provided on the inner side walls of the arc frame 52, that is, the arc frame 52 in the present embodiment has a notch in the middle, and positioning notches 551 are provided on the two opposite inner walls of the notch, and a plurality of notches 552 are provided on the end surface of the slip ring 53. It should be noted that the end surface in the present embodiment is a cylindrical structural surface in the middle of the slip ring 53, and a locking block 553 is movably inserted in the notch 552, and the locking block 553 and the notch 552 are engaged, that is, the locking block 553 and the notch 552 are engaged with each other in the present embodiment, so as to realize the locking and fixing of the circumferential position of the slip ring 53 itself and its sliding position inside the arc frame 52, so as to ensure the position stability of the slip ring 53 and the guide tube 54; A driving rod 554 is movably inserted at the rear end of the slip ring 53, and the driving rod 554 is used to drive the multiple locking blocks 553 to move radially along the slip ring 53. That is, the driving rod 554 provided in the present invention is used to drive the multiple locking blocks 553 to move synchronously, so as to achieve the card-connection and unlocking and separation with the above-mentioned positioning groove 551, thereby achieving the purpose of fixing and moving the slip ring 53.

[0034] Reference Fig.10Specifically, the driving rod 554 of the present invention includes a frustum portion 5541, a cylindrical portion 5542 and a pressing end 5543. The frustum portion 5541 contacts the plurality of locking blocks 553 and moves outward along the notch 552. A magnetic attraction member 5544 for magnetically attracting the plurality of locking blocks 553 to retract and move is embedded on the cylindrical portion 5542. Of course, the magnetic attraction member 5544 described in this embodiment can be set as a magnetic ring. An iron block portion can be set at the bottom of the locking block 553. The locking block 553 can be pulled by the magnetic attraction of the iron block portion and the magnetic attraction member 5544. A compression spring 555 is fixedly connected between the end of the frustum portion 5541 and the inner hole of the slip ring 53 .

[0035] That is to say, when the entire support 1 is adsorbed on the human body, the lifting component 4 applies negative pressure to the nipple to lift the entire breast, and the entire breast is kept in a supported and positioned state. At this time, the lesion can be positioned by the ultrasonic probe, and after the positioning is completed, the sleeve 51 is rotated to make the guide tube 54 in a straight line facing the lesion. After that, the driving rod 554 is pressed. When the driving rod 554 moves toward the inside of the slip ring 53, the cone portion 5541 on the driving rod 554 will be separated from one side of the multiple locking blocks 553, and the cylindrical portion 5542 of the driving rod 554 will continue to move forward. Since the cylindrical portion 5542 is embedded with a magnetic attraction member 5544, the magnetic attraction member 5544 will pull the multiple locking blocks 553 to move toward the inside of the slip ring 53. At this time, the end of the locking block 553 can be separated from the positioning notch 551, and the medical staff can freely slide the slip ring 53 to adjust its needle insertion position inside the arc frame 52. Of course, according to the need for the insertion of the puncture needle, the insertion angle of the guide tube 54 can be further adjusted. Specifically, since there is no circumferential locking between the slip ring 53 and the arc frame 52 when sliding, the slip ring 53 can be rotated at this time to adjust the angle of the position of the entire guide tube 54. After the adjustment is completed, the pressure on the drive rod 554 is released. At this time, the entire drive rod 554 moves outward under the resistance of the compression spring 555, and the cone portion 5541 of the drive rod 554 resists against multiple locking blocks 553. The multiple locking blocks 553 move outward until they are engaged with the current positioning notches 551 of the arc frame 52, thereby achieving the positioning and fixing of the guide tube 54. After that, the puncture needle can be inserted into the lesion along the guide tube 54 to complete the entire puncture positioning operation.

[0036] In summary, the present invention adopts two positioning structures 2 for negative pressure adsorption on the human body to achieve the positioning and fixation of the entire bracket 1, and at the same time adopts the design of the lifting component 4 for negative pressure lifting of the nipple of the patient's breast, so as to pull the breast upward to complete the shaping and positioning of the breast, thereby solving the problem of collapse and deviation of the breast due to lack of support affecting the accuracy of puncture in the traditional puncture positioning method. After the positioning is completed, the puncture needle can be inserted along the guide component 5 to achieve the effect of precise puncture of the lesion. The operation is simple and convenient, which greatly improves the accuracy and convenience of puncture positioning.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A positioning device for breast lesion puncture, characterized in that: include: A bracket (1) and positioning structures (2) installed at two ends of the bracket (1); A vacuum component (3) is provided in the middle of the support (1), and the two positioning structures (2) are connected to two sides of the vacuum component (3) to achieve negative pressure adsorption on the human body; A lifting component (4) for lifting the breast is provided below the vacuum component (3), and a guide component (5) for guiding and positioning the puncture needle is rotatably connected to the outer side of the vacuum component (3).

2. A positioning device for breast lesion puncture according to claim 1, characterized in that: The positioning structure (2) comprises an outwardly extending portion (21) formed at both ends of the bracket (1), and the bottom of the outwardly extending portion (21) is connected to a positioning suction cup (22); The expanded portion (21) has a cavity inside, and air passages (23) communicating with the cavity and the vacuum component (3) are provided on both sides of the support (1).

3. A positioning device for breast lesion puncture according to claim 2, characterized in that: The vacuum assembly (3) comprises a vacuum cylinder (31) fixed in the bracket (1); The upper end of the vacuum cylinder (31) is connected to the negative pressure device through a joint piece, wherein the inner side of the vacuum cylinder (31) is provided with two through holes (32) which are connected to the airway (23).

4. A positioning device for breast lesion puncture according to claim 3, characterized in that: The lifting assembly (4) comprises a hollow tube (41) movably plugged into the bottom of the vacuum cylinder (31); the bottom of the hollow tube (41) is connected to a lifting suction cup (42); and the end of the hollow tube (41) that slides on the vacuum cylinder (31) is sleeved with a piston (43).

5. A breast lesion puncture positioning device according to claim 3, characterized in that: A valve control component (33) is also provided in the vacuum cylinder (31), and the valve control component (33) is used to control the on-off of the gas paths of the two through holes (32).

6. A breast lesion puncture positioning device according to claim 5, characterized in that: The valve control assembly (33) comprises a button (331) movably plugged into the front end of the vacuum cylinder (31); a blocking ring (332) is slidably disposed inside the vacuum cylinder (31); and a spring (333) is disposed between the blocking ring (332) and the inner wall of the vacuum cylinder (31); Air holes (334) matching the through hole (32) are provided on both sides of the shielding ring (332), an opening (335) is provided in the middle of the shielding ring (332), and a wedge-shaped block (336) is provided at the inner end of the button (331) for plugging into the opening (335).

7. A breast lesion puncture positioning device according to claim 3, characterized in that: The guide assembly (5) comprises a sleeve (51) rotatably connected to the outside of the vacuum cylinder (31), and the sleeve (51) is circumferentially locked with the vacuum cylinder (31) via a locking piece (511); An arc frame (52) is fixedly connected to the outer side of the sleeve (51), a slip ring (53) is movably connected to the inner side of the arc frame (52), a guide tube (54) is fixedly installed on the front side of the slip ring (53), and a locking assembly (55) is provided between the slip ring (53) and the arc frame (52).

8. A breast lesion puncture positioning device according to claim 7, characterized in that: The locking assembly (55) comprises positioning notches (551) formed on two side walls inside the arc-shaped frame (52); a plurality of notches (552) are formed on the end surface of the slip ring (53); locking blocks (553) are movably inserted into the notches (552); and the locking blocks (553) and the notches (552) are snap-fitted; A driving rod (554) is movably inserted at the rear end of the slip ring (53), and the driving rod (554) is used to drive the plurality of locking blocks (553) to move radially along the slip ring (53).

9. A breast lesion puncture positioning device according to claim 8, characterized in that: The driving rod (554) comprises a frustum portion (5541), a cylindrical portion (5542) and a pressing end (5543); the frustum portion (5541) contacts the plurality of locking blocks (553) and moves outward along the notch (552); and a magnetic attraction member (5544) is embedded on the cylindrical portion (5542) and is used to magnetically attract the plurality of locking blocks (553) and cause them to retract and move inward. A compression spring (555) is fixedly connected between the end of the frustum portion (5541) and the inner hole of the slip ring (53).

10. A positioning device for breast lesion puncture according to claims 1-9, characterized in that: The support (1) is an arc-shaped structure, and the two positioning structures (2) are symmetrically arranged along the central axis of the support (1).

Images