Pressure transmitting system for vacuum suction sampling based on breast biopsy operation

Abstract

The invention discloses a pressure transmitting system for vacuum suction sampling based on breast biopsy operation, and relates to the technical field, the pressure transmitting system comprises a connecting piece, and further comprises an extension communication mechanism connected with the connecting piece and comprising a cylinder, the bottom of the cylinder is provided with an air port, a piston ring is sleeved in the cylinder, and a hard pipe is fixed on the inner wall of the piston ring; the pressure sensing mechanism is connected with the extension communication mechanism; the buffer performance adjusting mechanism is connected with the extension communicating mechanism and comprises a plurality of arc-shaped plates; according to the invention, by installing the extension communication mechanism, the extension communication mechanism and the buffer performance adjusting mechanism dynamically change the buffer damping performance of the pressure transmitter according to the pressure data adjusted by the vacuum suction system, so that the damping effect is matched with the working condition, and the service life of the sensor of the pressure transmitting system is ensured; the stability and the response speed of the pressure signal are balanced, so that the stability and the real-time performance of pressure detection in the suction sampling process are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of ophthalmological treatment, and in particular to a pressure transmitting 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: A pressure transmitter system for vacuum aspiration sampling based on breast biopsy surgery, including a connector, and 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; A pressure sensing mechanism connected to the extension communication mechanism; 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.

[0006] Furthermore, the connecting member comprises a mounting ring, a rubber sealing pad is fixed to the inner wall of the mounting ring, and a plurality of bolts are provided on the threaded sleeve of the mounting ring; A mounting platform is fixed on the top of the mounting ring; A mounting hole is formed through the top of the mounting ring.

[0007] Furthermore, 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.

[0008] Furthermore, the extension connection mechanism also includes a push rod motor fixed on the top of the mounting platform, a movable plate is fixed to the outside of the top of the hard tube, a guide rod 1 is sleeved inside the movable plate, and the guide rod 1 is fixed to the top of the mounting platform.

[0009] Further, the pressure sensing mechanism includes 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 threadedly sealed and connected to the connecting pipe; The pressure detector is electrically connected to the push rod motor.

[0010] Furthermore, the buffer performance adjustment mechanism also includes mounting brackets fixed on both sides of the fixing plate, an adjustment cylinder is fixed between the two mounting brackets, a plurality of arc grooves are formed on the outer wall of the adjustment cylinder, and the arc plate is sleeved inside the arc 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 wound around the outside of the regulating cylinder, and the metal buffer hose is sleeved inside a plurality of C-shaped frames.

[0011] Furthermore, 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.

[0012] Furthermore, the pressure detector is externally connected to a controller.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention dynamically changes the buffer damping performance of the pressure transmitter according to the pressure data adjusted by the vacuum suction system by installing an extension connection mechanism, an extension connection mechanism and a buffer performance adjustment mechanism, so that the damping effect matches the working conditions, and the service life of the pressure transmission system sensor is guaranteed while balancing the stability and response speed of the pressure signal, thereby ensuring the stability and real-time performance of pressure detection during the suction sampling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a first-perspective structural schematic diagram of the pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery proposed by the present invention.

[0015] Figure 2 This is a second perspective structural schematic diagram of the pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery proposed by the present invention.

[0016] Figure 3 This is a third-view structural diagram of the pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery proposed by the present invention.

[0017] Figure 4 This is a schematic diagram of the exploded structure of the extended connecting mechanism of the pressure transmitting system for vacuum aspiration sampling in breast biopsy surgery proposed by the present invention.

[0018] Figure 5 This is a schematic diagram of the structure of the buffer performance adjustment mechanism of the pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery proposed by the present invention.

[0019] Figure 6 This is a schematic diagram of the exploded structure of the buffer performance adjustment mechanism of the pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery proposed by the present invention.

[0020] In the figure: 1. Connecting piece; 11. Mounting ring; 12. Rubber sealing pad; 13. Bolt; 14. Mounting table; 2. Extended connecting mechanism; 21. Cylinder; 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 one; 3. Pressure sensing mechanism; 31. Fixed plate one; 32. Support plate; 33. Fixed plate two; 34. Pressure detector; 4. Buffering performance adjustment mechanism; 41. C-frame; 42. Mounting frame; 43. Adjusting cylinder; 44. Arc groove; 45. Center shaft; 46. Bevel gear two; 47. Screw; 48. Bevel gear one; 49. Guide rod two; 410. Moving frame; 411. Rotating shaft two; 412. Gear; 413. Rack; 414. Arc plate; 415. Mounting groove; 416. Rotating shaft one. DETAILED DESCRIPTION

[0021] 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.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the 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 the specific circumstances.

[0024] Example: Refer to Figure 1-Figure 3 : A pressure transmitter system for vacuum aspiration sampling based on breast biopsy surgery, including a connector 1, and also including: 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. A pressure sensing mechanism 3 connected to the extending communication mechanism 2; 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.

[0025] 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; A mounting platform 14 is fixed to the top of the mounting ring 11; A mounting hole is formed through the top of the mounting ring 11 .

[0026] 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; The hard tube 24 is fixed inside the mounting hole.

[0027] 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.

[0028] 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; The pressure detector 34 is electrically connected to the push rod motor 28 .

[0029] 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; A C-shaped frame 41 is fixed to each of the sides of the multiple arc-shaped plates 414 that are away from each other; The metal buffer hose 25 is wound around the outside of the adjustment tube 43 , and the metal buffer hose 25 is sleeved inside the plurality of C-shaped frames 41 .

[0030] The buffer performance adjustment mechanism 4 also includes a guide rod 49 which is sleeved inside the movable frame 410; A central shaft 45 is fixed to the inner wall of one side of the adjusting cylinder 43, a second guide rod 49 is fixedly connected to the central shaft 45, a screw rod 47 is rotatably connected to the central shaft 45, and a bevel gear 1 48 is fixed to the outer side of the end of the screw rod 47 close to the central shaft 45; The other side of the adjusting cylinder 43 is rotatably connected with a second rotating shaft 411, and a second bevel gear 46 is fixed to the outside of one end of the second rotating shaft 411 close to the central axis 45, and the second bevel gear 46 is meshed with a plurality of first bevel gears 48; A gear 412 is fixed to the other end of the second rotating shaft 411 , a rack 413 is meshed on one side of the gear 412 , and the bottom of the rack 413 is fixedly connected to the moving plate 27 .

[0031] The pressure detector 34 is externally connected to a controller.

[0032] Working principle: The mounting ring 11 is connected to the gas pipeline of the vacuum extraction sampling device; The air pressure will reach the pressure detector 34 through the cylinder 21, the hard tube 24, and the metal buffer hose 25. The pressure detector 34 obtains the pressure in the gas pipeline at this time. The curved metal buffer hose 25 can damp the pressure when the gas pressure fluctuates violently, so as to prevent the sensor of the pressure detector 34 from being damaged or causing measurement distortion due to instantaneous overpressure or high-frequency vibration. However, the curved metal buffer hose 25 will also cause a certain delay in response while damping, 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 high, the speed obtained by the sensor will also be faster, while 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 metal buffer hose 25 protects the sensor while ensuring the consistency of the pressure transmission speed, so that the working conditions can 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 work. At this time, the controller transmits the adjusted pressure data to the pressure detector 34, and the pressure detector 34 controls the push rod motor 28 to operate. The push rod motor 28 pushes the movable plate 27 to move upward. The movement of the movable plate 27 will pull the hard tube 24 and the piston ring 23 upward in the cylinder 21. The upward movement of the hard tube 24 will extend the pipeline length between the connecting piece 1 and the pressure detector 34. When the pipeline length increases, the metal buffer hose 25 wrapped around the adjusting cylinder 43 becomes loose. When the movable plate 27 moves upward to relax the metal buffer hose 25, the rack 413 moves upward to drive the gear 412 and the rotating shaft 411 to rotate. The rotation of the rotating shaft 411 drives the bevel gear 2 46 to rotate. When the bevel gear 2 46 rotates, it drives the other bevel gears 1 48 to rotate. The rotation of the bevel gear 1 48 drives the screw 47 to rotate, so that the movable 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 metal buffer hose 25 wrapped outside will be stretched open, and the pipe When the winding length of the adjusting cylinder 43 increases, the bending length will also increase. The increase in bending length will increase the buffering performance of the pipeline to pressure. The metal buffer hose 25 always remains circular when expanding and shrinking. While maintaining the circular shape, the pressure fluctuation of switching between expansion and contraction can be reduced. If the pressure is reduced, the push rod motor 28 retracts the hard tube 24 into the interior of the cylinder 21, shortening the length of the pipeline. At the same time, the circumference of the multiple arc plates 414 becomes smaller, so that the pipeline length is reduced and the pipeline bending length is also reduced, and the buffering performance is reduced. After the buffering performance is reduced, it corresponds to the buffering performance required by the adjusted pressure data, thereby ensuring the pressure sensing speed of the pressure detector 34 under the extraction pressure state. When the metal buffer hose 25 bends and changes, the rotating shaft 416 reduces the friction of the metal buffer hose 25, and the C-frame 41 limits the metal buffer hose 25 to avoid changes in the bending degree of the metal buffer hose 25 during expansion and contraction, which affects the detection.

[0033] 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 pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery, comprising a connector (1), characterized in that: Also includes: An extended communication mechanism (2) is connected to the connecting piece (1), comprising a cylinder (21), a gas port (22) being provided at the bottom of the cylinder (21), a piston ring (23) being sleeved inside the cylinder (21), and a hard tube (24) being fixed to the inner wall of the piston ring (23); A pressure sensing mechanism (3) connected to the extension communication mechanism (2); The buffer performance adjustment mechanism (4) is connected to the extension communication mechanism (2), and comprises a plurality of arc-shaped plates (414), a plurality of mounting grooves (415) are provided on the arc-shaped plates (414), a rotating shaft (416) is rotatably connected inside the mounting grooves (415), and a movable frame (410) is fixed on opposite sides of the plurality of arc-shaped plates (414), and a screw (47) is provided on the internal thread sleeve of the movable frame (410).

2. The pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery according to claim 1, characterized in that: 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); A mounting platform (14) is fixed on the top of the mounting ring (11); A mounting hole is formed through the top of the mounting ring (11).

3. The pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery according to claim 2, characterized in that: The extending and connecting mechanism (2) further comprises a metal buffer hose (25) fixedly connected to the top end of the hard tube (24); one end of the metal buffer hose (25) is connected to a connecting pipe (26); The hard tube (24) is fixed inside the mounting hole.

4. The pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery according to claim 3, characterized in that: The extending connecting mechanism (2) further comprises 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); and the guide rod (29) is fixed to the top of the mounting platform (14).

5. The pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery according to claim 4, characterized in that: The pressure sensing mechanism (3) comprises a fixing plate 1 (31) fixed to the outer wall of the top end of the cylinder (21), a support plate (32) being fixed to one side of the fixing plate 1 (31), a fixing plate 2 (33) being fixed to one side of the support plate (32), a pressure detector (34) being fixed inside the fixing plate 2 (33), and a gas interface of the pressure detector (34) being threadedly sealedly connected to the connecting pipe (26); The pressure detector (34) is electrically connected to the push rod motor (28).

6. The pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery according to claim 5, characterized in that: The buffer performance adjustment mechanism (4) further comprises mounting frames (42) fixed on both sides of the fixing plate (31), an adjustment cylinder (43) being fixed between the two mounting frames (42), a plurality of arc-shaped grooves (44) being formed on the outer wall of the adjustment cylinder (43), and the arc-shaped plate (414) being sleeved inside the arc-shaped grooves (44); A C-shaped frame (41) is fixed to each of the sides of the plurality of arc-shaped plates (414) that are away from each other; The metal buffer hose (25) is wound around the outside of the adjustment cylinder (43), and the metal buffer hose (25) is sleeved inside a plurality of C-shaped frames (41).

7. The pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery according to claim 6, characterized in that: The buffer performance adjustment mechanism (4) further comprises a second guide rod (49) which is sleeved inside the movable frame (410); A central shaft (45) is fixed to an inner wall of one side of the adjusting cylinder (43); 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 bevel gear (48) is fixed to the outside of one end of the screw rod (47) close to the central shaft (45); A second rotating shaft (411) is rotatably connected to the other side of the adjusting cylinder (43); a second bevel gear (46) is fixed to the outside of one end of the second rotating shaft (411) close to the central axis (45); the second bevel gear (46) is meshed with a plurality of first bevel gears (48); A gear (412) is fixed to the other end of the second rotating shaft (411), a rack (413) is meshed on one side of the gear (412), and the bottom of the rack (413) is fixedly connected to the moving plate (27).

8. The pressure transmitter system for vacuum aspiration sampling in breast biopsy surgery according to claim 7, characterized in that: The pressure detector (34) is externally connected to a controller.

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