Pressure Transmitter System for Vacuum Aspiration Sampling in Breast Biopsy

Abstract

The invention discloses a pressure transmitter system for vacuum suction sampling based on breast biopsy surgery, which relates to the technical field of breast biopsy, and comprises a connecting piece, and also comprises: an extension communication mechanism, which is connected with the connecting piece and comprises a cylinder, a gas port is opened at the bottom of the cylinder, a piston ring is sleeved inside the cylinder, and a hard tube is fixed on the inner wall of the piston ring; a pressure sensing mechanism, which is connected with the extension communication mechanism; a buffer performance adjustment mechanism, which is connected with the extension communication mechanism and comprises a plurality of arc plates; the invention dynamically changes the buffer damping performance of the pressure transmitter according to the pressure data adjusted by the vacuum suction system by installing the extension communication mechanism, the extension communication mechanism and the buffer performance adjustment mechanism, so that the damping effect matches the working condition, and the service life of the sensor of the pressure transmitter system is ensured, while the stability and response speed of the pressure signal are balanced, so as to ensure the stability and real-time performance of the pressure detection in the suction sampling process.

Description

Technical Field

[0001] The invention relates to the technical field of breast biopsy, and in particular to a pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery. Background Art

[0002] The breast biopsy needle is clinically used in conjunction with the breast biopsy device to completely or partially remove abnormal breast tissue shown in imaging examinations of patients in a minimally invasive manner. After the abnormal tissue is cut by the biopsy needle, the sampled tissue in the biopsy needle is extracted by a negative pressure system.

[0003] The pressure transmitter system of the vacuum suction system is particularly important in the entire biopsy excision device. In the prior art, the sensor of the pressure transmitter system may be damaged or have measurement distortion due to instantaneous overpressure or high-frequency vibration. In order to reduce the impact of pressure on the sensor, a buffer line is set to achieve damping. However, damping will also cause a certain delay in response, because the damping effect will slow down the pressure transmission speed, resulting in a slower dynamic measurement response. However, the pressure will also determine the pressure transmission speed. When the pressure is high, the speed obtained by the sensor will be faster, and when the pressure is low, the speed obtained will be slower. Therefore, different suction forces need to correspond to different damping effects, so that the damping of the buffer line protects the sensor while ensuring the consistency of the pressure transmission speed, thereby balancing the stability and response speed of the pressure signal and extending the life of the sensor. Summary of the invention

[0004] The present invention proposes a pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A pressure transmitter system for vacuum aspiration sampling based on breast biopsy surgery, including a connector, and also includes:

[0007] The extended communication mechanism is connected to the connecting piece and comprises a cylinder, a gas port is opened at the bottom of the cylinder, a piston ring is sleeved inside the cylinder, and a hard tube is fixed to the inner wall of the piston ring;

[0008] A pressure sensing mechanism connected to the extension communication mechanism;

[0009] The buffering performance adjustment mechanism is connected to the extension connection mechanism, and includes a plurality of arc-shaped plates, a plurality of mounting grooves are provided on the arc-shaped plates, a rotating shaft is rotatably connected inside the mounting grooves, a movable frame is fixed on opposite sides of the plurality of arc-shaped plates, and a screw is provided on the internal threaded sleeve of the movable frame.

[0010] Further, the connecting member includes a mounting ring, a rubber gasket is fixed to the inner wall of the mounting ring, and a plurality of bolts are threadedly sleeved on the mounting ring;

[0011] A mounting table is fixed to the top of the mounting ring;

[0012] A mounting hole is formed through the top of the mounting ring.

[0013] Further, the extension and connection mechanism further includes a metal buffer hose fixedly connected to the top end of the rigid tube, and a connecting tube is connected to one end of the metal buffer hose;

[0014] The rigid tube is fixed inside the mounting hole.

[0015] Further, the extension and connection mechanism further includes a push rod motor fixed to the top of the mounting table, a moving plate is fixed to the outer part of the top end of the rigid tube, a guide rod one is sleeved inside the moving plate, and the guide rod one is fixed to the top of the mounting table.

[0016] Further, the pressure sensing mechanism includes a fixing plate one fixed to the outer wall of the top end of the cylinder body, a support plate is fixed to one side of the fixing plate one, a fixing plate two is fixed to one side of the support plate, a pressure detector is fixed inside the fixing plate two, and the gas interface of the pressure detector is threadedly and hermetically connected to the connecting tube;

[0017] The pressure detector is electrically connected to the push rod motor.

[0018] Further, the buffer performance adjustment mechanism further includes mounting brackets fixed to both sides of the fixing plate one, an adjustment cylinder is fixed between the two mounting brackets, a plurality of arc-shaped grooves are formed on the outer wall of the adjustment cylinder, and the arc-shaped plate is sleeved inside the arc-shaped grooves;

[0019] C-shaped frames are fixed to the sides of the plurality of arc-shaped plates away from each other;

[0020] The metal buffer hose is wound around the outside of the adjustment cylinder, and the metal buffer hose is sleeved inside the plurality of C-shaped frames.

[0021] Further, a guide rod two is sleeved inside the moving frame of the buffer performance adjustment mechanism;

[0022] A central shaft is fixed to the inner wall of one side of the adjustment cylinder, the guide rod two is fixedly connected to the central shaft, the screw rod is rotatably connected to the central shaft, and a bevel gear one is fixed to the outer part of the end of the screw rod close to the central shaft;

[0023] A rotating shaft two is rotatably connected through the other side of the adjustment cylinder, a bevel gear two is fixed to the outer part of the end of the rotating shaft two close to the central shaft, and the bevel gear two meshes with the plurality of bevel gear ones;

[0024] The other end of the second rotating shaft is fixed with a gear, and one side of the gear is engaged with a rack, and the bottom of the rack is fixedly connected with a moving plate.

[0025] Furthermore, the pressure detector is externally connected with a controller.

[0026] Compared with the existing technology, the beneficial effects of the present invention are:

[0027] By installing an extension connection mechanism, an extension connection mechanism and a buffer performance adjustment mechanism, the present invention dynamically changes the buffer damping performance of the pressure transmitter according to the pressure data adjusted by the vacuum suction system, making the damping effect match the working conditions, ensuring the service life of the sensor of the pressure transmission system while balancing the stability and response speed of the pressure signal, thereby ensuring the stability and real-time performance of pressure detection during the sampling process of vacuum extraction. Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of the first perspective of the pressure transmission system for vacuum sampling in breast biopsy surgery proposed by the present invention.

[0029] Figure 2 It is a schematic structural diagram of the second perspective of the pressure transmission system for vacuum sampling in breast biopsy surgery proposed by the present invention.

[0030] Figure 3 It is a schematic structural diagram of the third perspective of the pressure transmission system for vacuum sampling in breast biopsy surgery proposed by the present invention.

[0031] Figure 4 It is an exploded structural diagram of the extension connection mechanism of the pressure transmission system for vacuum sampling in breast biopsy surgery proposed by the present invention.

[0032] Figure 5 It is a schematic structural diagram of the buffer performance adjustment mechanism of the pressure transmission system for vacuum sampling in breast biopsy surgery proposed by the present invention.

[0033] Figure 6 It is an exploded structural diagram of the buffer performance adjustment mechanism of the pressure transmission system for vacuum sampling in breast biopsy surgery proposed by the present invention.

[0034] In the figure: 1. Connecting piece; 11. Installation ring; 12. Rubber gasket; 13. Bolt; 14. Installation platform; 2. Extension and connection mechanism; 21. Cylinder body; 22. Air port; 23. Piston ring; 24. Hard pipe; 25. Metal buffer hose; 26. Connecting pipe; 27. Moving plate; 28. Push rod motor; 29. Guide rod 1; 3. Pressure sensing mechanism; 31. Fixed plate 1; 32. Support plate; 33. Fixed plate 2; 34. Pressure detector; 4. Buffer performance adjustment mechanism; 41. C-shaped frame; 42. Installation frame; 43. Adjusting cylinder; 44. Arc-shaped groove; 45. Central axis; 46. Bevel gear 2; 47. Screw; 48. Bevel gear 1; 49. Guide rod 2; 410. Moving frame; 411. Rotating shaft 2; 412. Gear; 413. Rack; 414. Arc-shaped plate; 415. Installation groove; 416. Rotating shaft 1. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined. In addition, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0038] Example: Refer to Figures 1-6: A pressure transmitter system for vacuum aspiration sampling based on breast biopsy surgery, including a connector 1, and also including:

[0039] The extended communication mechanism 2 is connected to the connecting piece 1 and comprises a cylinder 21. The bottom of the cylinder 21 is provided with an air port 22. The cylinder 21 is sleeved with a piston ring 23. The inner wall of the piston ring 23 is fixed with a hard tube 24.

[0040] A pressure sensing mechanism 3 connected to the extending communication mechanism 2;

[0041] The buffering performance adjustment mechanism 4 is connected to the extension connecting mechanism 2, and includes a plurality of arc plates 414, a plurality of mounting grooves 415 are opened on the arc plates 414, and a rotating shaft 416 is internally connected to the mounting groove 415 for rotation. A movable frame 410 is fixed on the opposite side of the plurality of arc plates 414, and a screw 47 is provided on the internal threaded sleeve of the movable frame 410.

[0042] The connecting member 1 comprises a mounting ring 11, a rubber sealing pad 12 is fixed to the inner wall of the mounting ring 11, and a plurality of bolts 13 are threadedly sleeved on the mounting ring 11;

[0043] A mounting platform 14 is fixed to the top of the mounting ring 11;

[0044] A mounting hole is formed through the top of the mounting ring 11 .

[0045] The extended communication mechanism 2 further includes a metal buffer hose 25 fixedly connected to the top of the hard tube 24, and one end of the metal buffer hose 25 is connected to a connecting pipe 26;

[0046] The hard tube 24 is fixed inside the mounting hole.

[0047] The extended connecting mechanism 2 also includes a push rod motor 28 fixed to the top of the mounting platform 14. A moving plate 27 is fixed to the outside of the top of the hard tube 24. A guide rod 29 is sleeved inside the moving plate 27. The guide rod 29 is fixed to the top of the mounting platform 14.

[0048] The pressure sensing mechanism 3 includes a fixing plate 1 31 fixed to the outer wall of the top end of the cylinder 21, a support plate 32 is fixed to one side of the fixing plate 1 31, a fixing plate 2 33 is fixed to one side of the support plate 32, a pressure detector 34 is fixed inside the fixing plate 2 33, and a gas interface of the pressure detector 34 is threadedly sealed and connected to the connecting pipe 26;

[0049] The pressure detector 34 is electrically connected to the push rod motor 28 .

[0050] The buffer performance adjustment mechanism 4 also includes mounting frames 42 fixed on both sides of the fixing plate 31, an adjustment cylinder 43 is fixed between the two mounting frames 42, a plurality of arc grooves 44 are formed on the outer wall of the adjustment cylinder 43, and the arc plate 414 is sleeved inside the arc groove 44;

[0051] On one side of each of the plurality of arc-shaped plates 414 away from each other, a C-shaped frame 41 is fixed.

[0052] The metal buffer hose 25 is wound around the outside of the adjusting cylinder 43, and the metal buffer hose 25 is sleeved inside the plurality of C-shaped frames 41.

[0053] The buffer performance adjusting mechanism 4 further includes a second guide rod 49 sleeved inside the moving frame 410;

[0054] On one side inner wall of the adjusting cylinder 43, a central shaft 45 is fixed. The second guide rod 49 is fixedly connected to the central shaft 45, the screw rod 47 is rotatably connected to the central shaft 45, and a first bevel gear 48 is fixedly arranged on the outside of one end of the screw rod 47 close to the central shaft 45;

[0055] On the other side of the adjusting cylinder 43, a second rotating shaft 411 is rotatably connected through. A second bevel gear 46 is fixedly arranged on the outside of one end of the second rotating shaft 411 close to the central shaft 45. The second bevel gear 46 meshes with the plurality of first bevel gears 48;

[0056] On the other end of the second rotating shaft 411, a gear 412 is fixed. A rack 413 meshes with one side of the gear 412. The bottom of the rack 413 is fixedly connected to the moving plate 27.

[0057] The pressure detector 34 is externally connected with a controller.

[0058] Working principle:

[0059] The mounting ring 11 is connected to the gas pipeline of the vacuum suction sampling device;

[0060] The air pressure will reach the pressure detector 34 through the cylinder body 21, the rigid pipe 24, and the metal buffer hose 25. The pressure detector 34 obtains the pressure inside the gas pipeline at this time. The bent metal buffer hose 25 can damp the pressure when the gas pressure fluctuates violently, avoiding damage or measurement distortion of the sensor of the pressure detector 34 due to instantaneous overpressure or high-frequency vibration. However, while damping, the bent metal buffer hose 25 will also cause a certain delay in response because the damping effect will slow down the pressure transmission speed, resulting in a slower dynamic measurement response. However, the magnitude of the pressure will also determine the pressure transmission speed. When the pressure is large, the speed obtained by the sensor will be faster, and when the pressure is small, the obtained speed will be slower. Therefore, different suction forces require corresponding damping effects to ensure the consistency of the pressure transmission speed while the metal buffer hose 25 protects the sensor through damping, enabling the working conditions to be matched. Therefore, when adjusting the suction force, it is necessary to dynamically adjust the buffering effect of the metal buffer hose 25 according to the adjusted suction pressure data without affecting the operation;

[0061] At this time, the controller transmits the adjusted pressure data to the pressure detector 34. The pressure detector 34 controls the operation of the push rod motor 28. The push rod motor 28 pushes the moving plate 27 upward. The movement of the moving plate 27 will pull the rigid pipe 24 and the piston ring 23 to move upward in the cylinder body 21. The upward movement of the rigid pipe 24 will extend the pipeline length between the connecting member 1 and the pressure detector 34. When the pipeline length increases, the metal buffer hose 25 wound around the adjusting cylinder 43 becomes loose. While the moving plate 27 moves upward to make the metal buffer hose 25 loose, the rack 413 moves upward to drive the gear 412 and the second rotating shaft 411 to rotate. The rotation of the second rotating shaft 411 drives the second bevel gear 46 to rotate. While the second bevel gear 46 rotates, it drives several other first bevel gears 48 to rotate. The rotation of the first bevel gear 48 drives the screw rod 47 to rotate, so that the moving frame 410 pushes the arc plate 414 to move. The movement of multiple arc plates 414 expands the circumference of the adjusting cylinder 43. When the circumference expands, the externally wound metal buffer hose 25 will be stretched. The winding length of the pipeline on the adjusting cylinder 43 increases. While the length increases, the bending length will also increase. The increase in the bending length will increase the buffering performance of the pipeline against pressure. When expanding and contracting, the metal buffer hose 25 always remains circular. While remaining circular, it can reduce the pressure fluctuation during the switching between expansion and contraction. If the pressure is reduced, the push rod motor 28 will retract the rigid pipe 24 into the interior of the cylinder body 21, shortening the pipeline length. At the same time, the circumference formed by multiple arc plates 414 becomes smaller, so that while the pipeline length shrinks, the pipeline bending length also becomes smaller, and the buffering performance decreases. After the buffering performance decreases, it corresponds to the buffering performance required by the adjusted pressure data, ensuring the pressure sensing speed of the pressure detector 34 in this extraction pressure state. When the metal buffer hose 25 bends and changes, the first rotating shaft 416 reduces the friction force of the metal buffer hose 25. The C-shaped frame 41 positions the metal buffer hose 25 to prevent the bending degree of the metal buffer hose 25 from changing during expansion and contraction, affecting the detection.

[0062] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery, comprising a connector, wherein the connector comprises a mounting ring, a mounting hole is formed through the top of the mounting ring, and a mounting platform is fixed to the top of the mounting ring, wherein: Also includes: The extended communication mechanism is connected to the connecting piece and comprises a cylinder, a gas port is opened at the bottom of the cylinder, a piston ring is sleeved inside the cylinder, and a hard tube is fixed to the inner wall of the piston ring; The extending and communicating mechanism further comprises a metal buffer hose fixedly connected to the top end of the hard tube, and one end of the metal buffer hose is connected to a connecting pipe; The hard tube is fixed inside the mounting hole; The extending and connecting mechanism also includes a push rod motor fixed on the top of the mounting platform, and a moving plate is fixed on the top of the hard tube. A pressure sensing mechanism connected to the extension communication mechanism; The pressure sensing mechanism comprises a fixing plate 1 fixed to the outer wall of the top end of the cylinder, a support plate is fixed to one side of the fixing plate 1, a fixing plate 2 is fixed to one side of the support plate, a pressure detector is fixed inside the fixing plate 2, and a gas interface of the pressure detector is thread-sealed and connected to the connecting pipe; The pressure detector is electrically connected to the push rod motor; The buffer performance adjustment mechanism is connected to the extension communication mechanism, and includes a plurality of arc-shaped plates, a plurality of mounting grooves are provided on the arc-shaped plates, a rotating shaft 1 is rotatably connected inside the mounting grooves, a movable frame is fixed on opposite sides of the plurality of arc-shaped plates, and a screw is provided on the internal thread sleeve of the movable frame; The buffer performance adjustment mechanism also includes mounting frames fixed on both sides of the fixing plate, and an adjustment cylinder is fixed between the two mounting frames; The metal buffer hose is wound around the outside of the regulating cylinder.

2. The pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery according to claim 1, characterized in that: A rubber sealing pad is fixed on the inner wall of the mounting ring, and a plurality of bolts are threadedly sleeved on the mounting ring.

3. The pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery according to claim 2, characterized in that: A guide rod 1 is sleeved inside the movable plate, and the guide rod 1 is fixed on the top of the mounting platform.

4. The pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery according to claim 3, characterized in that: The outer wall of the adjusting cylinder is provided with a plurality of arc-shaped grooves, and the arc-shaped plate is sleeved inside the arc-shaped grooves; A C-shaped frame is fixed on one side of the plurality of arc-shaped plates which are away from each other; The metal buffer hose is sleeved inside a plurality of C-shaped frames.

5. The pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery according to claim 4, characterized in that: The buffer performance adjustment mechanism also includes a guide rod 2 which is sleeved inside the movable frame; A central shaft is fixed to an inner wall of one side of the adjusting cylinder, the second guide rod is fixedly connected to the central shaft, the screw is rotatably connected to the central shaft, and a bevel gear 1 is fixed to the outside of one end of the screw close to the central shaft; A second rotating shaft is rotatably connected to the other side of the adjusting cylinder, and a second bevel gear is fixed to the outside of one end of the second rotating shaft close to the central axis, and the second bevel gear is meshed with a plurality of first bevel gears; A gear is fixed to the other end of the second rotating shaft, a rack is meshed on one side of the gear, and the bottom of the rack is fixedly connected to the moving plate.

6. The pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery according to claim 5, characterized in that: The pressure detector is externally connected to a controller.

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