An ultrasonic scalpel head driving force test tooling

Abstract

The present invention discloses a tool for testing the driving force of an ultrasonic scalpel head, belonging to the technical field of force measurement tools. The tool comprises a frame and a test head located at the end of a shank of the ultrasonic scalpel. The test head comprises a joint and an overhead portion. The joint can be adapted to the end of the shank in an openable and closable manner to form a receiving space. The overhead portion is fixed to a coaxial position of the shank. A three-axis pressure probe array is fixedly installed on the overhead portion within the receiving space. The three-axis pressure probe array is composed of pressure probe 1, pressure probe 2, and pressure probe 3 to achieve contact monitoring of the joint in the vertical, horizontal, and depth directions. Through the design of the test head, the present invention replaces the blade and blade fastener as a load and is installed at the end of the shank, simulating a real usage scenario. It can detect the driving force of the ultrasonic scalpel on the shank in multiple directions, and the detection result is closer to the actual output value of the ultrasonic scalpel.

Description

Technical Field

[0001] The present invention belongs to the technical field of force measurement tools, and in particular relates to a tool for testing the driving force of an ultrasonic scalpel head. Background Art

[0002] The ultrasonic scalpel is a medical device that uses ultrasonic technology for cutting and coagulation. It is widely used in surgical operations and tumor treatment. The ultrasonic scalpel causes less bleeding during cutting, causes less damage to surrounding tissues, and has a faster postoperative recovery. The reason is that the ultrasonic scalpel uses the high-frequency electrical signal provided by the host to convert it into an ultrasonic signal (mechanical vibration) by the transducer handle. This high-frequency vibration is used for cutting and hemostasis.

[0003] The existing Chinese utility model patent with publication number CN217424620U discloses a tool for testing the driving force of an ultrasonic scalpel head. One end of a tension sensor is connected to the inner sleeve of a slender body through a floating connector, and the other end of the tension sensor is connected to a fixed connector. The tension sensor can measure the pulling force between the inner and outer sleeves, thereby realizing the detection of the driving force of the scalpel head.

[0004] However, in actual use, the slender body of the ultrasonic scalpel does not only have axial driving force, but can release driving force in multiple directions. However, due to this fixing method, only the axial driving force released by the slender body of the ultrasonic scalpel can be detected, and the driving force in other directions of the slender body will be transmitted to the sleeve and absorbed and cannot be detected. Therefore, there is a large deviation between the detection value and the actual value. In view of this, an ultrasonic scalpel head driving force test tool is provided. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned prior art and provide an ultrasonic scalpel head driving force testing tool.

[0006] The technical solutions adopted to solve the above technical problems are:

[0007] An ultrasonic scalpel head driving force testing tool comprises a frame and:

[0008] A clamping frame fixed to the flat surface of the frame, the clamping frame having the ability to open and close horizontally, and the clamping frame is used to horizontally fix and press the ultrasonic scalpel placed thereon;

[0009] A test head located at the end of the ultrasonic scalpel's blade rod, the test head comprising a joint portion and an overhead portion. The joint portion can be adapted to open and close on the end of the blade rod to form a receiving space. The overhead portion is fixed at a coaxial position with the blade rod. A three-axis pressure probe array is fixedly installed in the overhead portion within the receiving space. The three-axis pressure probe array consists of pressure probe 1, pressure probe 2, and pressure probe 3 to achieve contact monitoring of the joint in the vertical, horizontal, and depth directions.

[0010] The end frame is fixed to the end of the clamping frame, and the end frame is connected to the overhead part through a screw and a self-locking nut to achieve vertical position adjustment of the three-axis pressure probe array.

[0011] Furthermore, the clamping frame includes a slide rail, a fork frame 1 is slidably mounted on the slide rail, a fork frame 2 is fixedly mounted on the end of the slide rail, and the fork frame 1 can be squeezed and pushed toward the fork frame 2 by a pushing member.

[0012] Through the above technical solution, the slide rail plays a guiding role when the fork frame 2 slides, and the distance between the fork frame 1 and the fork frame 2 is widened. The fork frame 2 is fixed and has a U-shaped opening with the opening upward. The fork frame 1 is also provided with a U-shaped opening with the opening upward. The ultrasonic knife can be placed horizontally in the two U-shaped openings, and then the ultrasonic knife is pressed by the fork frame 1 to achieve rapid radial fixation of the ultrasonic knife.

[0013] Furthermore, the pushing member is composed of a crank and a push rod, the middle part of the crank is hinged to the end of the push rod, the far end of the push rod is hingedly installed with a cylinder, the cylinder is outer-circuited with a guide seat and installed on a slide rail, the cylinder is detachably connected to the fork frame by a bolt, and a limit seat is provided under the crank, and the limit seat and the crank are detachably connected by a pin rod.

[0014] Through the above technical solution, the fork frame 2 needs to be fixed after pressing the ultrasonic knife to prevent the ultrasonic knife from loosening. When operating the fork frame 2, the lower end of the crank is hinged to the frame at the end of the slide rail, and the upper end of the crank is pushed to slide the cylinder horizontally, so that the fork frame 2 can be moved horizontally to press the ultrasonic knife. After pressing, the limit hole on the crank is aligned with the horizontal hole on the limit seat, and the pin rod can be inserted between the limit hole and the horizontal hole to fix the crank, thereby realizing the position locking of the fork frame 2.

[0015] Furthermore, the joint includes a connecting frame, on which clamp 1 and clamp 2 are hingedly installed. Clamp 1 and clamp 2 are formed with an arc-shaped inner wall adapted to the knife rod near one end of the knife rod. A clamp is installed on the connecting frame, and the clamp is located in a vertical position to press clamp 1 and clamp 2 against the end of the knife rod. The clamp can be swung ninety degrees to release clamp 1 and clamp 2.

[0016] Through the above technical solution, clamp one and clamp two are radially sleeved on one end of the tool rod, and the clamp is used to clamp to ensure stable contact. During the test, the joint can move synchronously when the tool rod is displaced radially, and when disassembling, the clamp can rotate ninety degrees around the rotation center of the top left side, and the clamp can swing to the top of clamp one and clamp two to complete the disengagement and release, and the disassembly action is quick.

[0017] Furthermore, the connecting frame is provided with an insertion rod at the position of the blade slot through hole of the knife rod, and the clamps 1 and 2 are provided with semicircular grooves at the positions corresponding to the blade slot through holes. The two semicircular grooves can form a perfect circular insertion hole, and the insertion rod can be displaced in a vertical position to pass through the insertion hole and be inserted into the through hole of the blade slot.

[0018] Through the above technical solution, the blade groove of the tool rod is a rectangular groove along the axial direction, and a circular through hole is set at the bottom of the groove to avoid cracking there. After the clamps 1 and 2 are installed at the ends of the tool rod, the insertion rod is inserted from top to bottom into the through hole position of the blade groove, and at the same time, they are respectively clamped with the clamps 1 and 2 through the semicircular groove to prevent the clamps 1 and 2 from sliding along the axial direction of the tool rod, thereby avoiding insufficient measurement accuracy caused by relative displacement.

[0019] Furthermore, the joint also includes a transmission part, which has a longitudinal sliding frame, and the longitudinal sliding frame is slidably installed with a rocker arm at the horizontal opening, and the rocker arm is rotatably connected to the connecting frame at one end away from the longitudinal sliding frame, and the top of the insertion rod is fixedly connected to the bottom end of the longitudinal sliding frame, and the clamp is coaxially provided with a connecting shaft at the rotating connection between the rocker arm and the connecting frame, and a steel rope is coiled in the middle of the connecting shaft, and the rocker arm is rotatably installed with a central shaft near the connecting shaft position, and a bushing is installed in the middle of the central shaft and is sleeved on the outside of the steel rope.

[0020] Through the above technical solution, the clamp is installed by rotating the coupling, the steel rope is coiled counterclockwise on the outside of the coupling, and the outer wall of the steel rope is in friction contact with the central shaft through the bushing. Pulling the steel rope upward can drive the clamp to rotate ninety degrees counterclockwise to disengage from clamp one and clamp two. The upward friction of the steel rope on the central shaft will cause the longitudinal sliding frame to move upward and disengage from the knife rod, completing the separation drive of the clamp and the insertion rod in different directions but at the same time.

[0021] Furthermore, the longitudinal sliding frame is installed with a roller near one end of the connecting frame, and the connecting frame is provided with a longitudinal opening corresponding to the roller position. The central axis is overlapped and arranged in the middle of the lower side of the longitudinal sliding frame. A stabilizing rod is rotatably installed at the end of the central axis, and the stabilizing rod is hinged to the connecting frame away from one end of the central axis.

[0022] Through the above technical solution, the insertion rod needs to move vertically up and down, so the roller is used to roll on the longitudinal opening, and the inner wall of the longitudinal opening can guide the end of the longitudinal sliding frame. The stabilizing rod can be retracted and located on both sides of the longitudinal sliding frame to provide anti-twisting support when the longitudinal sliding frame moves upward, thereby ensuring the vertical stability of the longitudinal sliding frame.

[0023] Furthermore, a through-tube cooperating with the steel rope is installed on the top of the connecting frame, an attraction block is installed on the end of the steel rope away from the connecting shaft, a sleeve is installed on the outside of the attraction block, an electromagnet is installed on the end of the sleeve away from the attraction block, a top plate is fixedly installed on the outside of the sleeve, and the top plate is detachably installed on the top of the screw through a screw cap on the bottom surface.

[0024] Through the above technical solution, the steel rope is guided by the through-tube, and the magnetic force generated by the energization of the electromagnet is used to pull the attraction block to provide pulling power for the steel rope. The joint can be quickly disassembled during the installation and debugging stages. During the inspection, the joint can be separated from the knife rod by energizing the electromagnet to simulate the situation where the blade on the knife rod falls off, and whether the anti-fall function of the ultrasonic knife with blade fall-off detection function is normal.

[0025] Furthermore, a vertical smooth hole is provided at the position of the overhead part corresponding to the screw, and a mounting platform is provided at one end of the overhead part located inside the accommodating space. The four pressure probes 1, one pressure probe 2 and two pressure probes 3 are all fixedly mounted on the mounting platform, and the connecting frame is sleeved on the outside of the overhead part to form an annular gap.

[0026] Through the above technical solution, the overhead part can slide up and down along the screw rod and cooperate with the fixation of the clamping frame. Because of different models of ultrasonic knives, the tool rod will have different heights after being clamped. After the joint part and the tool rod are fixed, the height of the overhead part needs to be adjusted to ensure that the three-axis pressure probe array is arranged in the center of the accommodation space, and to ensure that pressure probe one, pressure probe two and pressure probe three can all contact the inner wall of the accommodation space for multi-directional detection. In order to prevent and reduce interference, the connecting frame is set in the middle section of the overhead part and an annular gap is left. Before the joint part is installed on the tool rod, it can form a whole with the overhead part to avoid scattered and inconvenient installation, and also prevent parts from being lost. After the joint part is installed on the tool rod, the annular gap can prevent the fixed overhead part from affecting the free movement of the joint part with the tool rod, and prevent the detected data from being less than the actual value.

[0027] Furthermore, the pressure probe 1 includes a coaxially arranged outer ring and a pressure sensor, a compensation gap is formed between the outer ring and the pressure sensor, a support is installed in the compensation gap, the support is in direct contact with the inner wall of the outer ring and the outer wall of the pressure sensor, the pressure sensor is located at one end on the inner side of the outer ring and is installed with a sliding bearing, and the pressure probe 2 and pressure probe 3 are exactly the same in structure as the pressure probe 1 except for the installation position.

[0028] Through the above technical solution, the support frame is an elastic structure, which can be deformed under pressure and cooperate with the compensation gap to make the pressure sensor slide with two degrees of freedom in the outer ring, so that the pressure sensor can detect the force acting vertically on the end face of the pressure sensor, while the force parallel to the end face of the pressure sensor will be offset by the sliding of the pressure sensor, ensuring stable installation during long-term detection, and can reduce the impact of multi-degree-of-freedom movement on detection accuracy through adaptive horizontal sliding.

[0029] The beneficial effects of the present invention are as follows:

[0030] (1) The present invention adopts the design of the test head. The joint part replaces the blade and the blade fastener as the load and is installed at the end of the tool rod. The joint part is driven by the tool rod to move in multiple angles through radial and axial locking, simulating the actual usage scenario. The driving force of the tool rod on the joint part is converted into the displacement of the joint part, and then transmitted to the position of the three-axis pressure probe array to be converted into an electrical signal. It can detect the driving force of the ultrasonic knife on the knife head in multiple directions. The detection result is closer to the actual output value of the ultrasonic knife.

[0031] (2) The present invention optimizes the test head and uses a flexible steel rope as an unlocking transmission member. During the test, the normal progress and accuracy range of the driving force test are not affected. When testing the anti-slip function of the ultrasonic knife, the joint can be unlocked radially and axially by pulling the steel rope at the same time, so that the joint can be separated from the knife rod during the test, truly simulating the accidental fall-off of the blade and the blade fastener during use, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a first perspective structural diagram of the present invention;

[0033] Figure 2 It is an enlarged schematic diagram of the middle structure of the frame of the present invention;

[0034] Figure 3 This is a schematic diagram of the assembly between the clamping frame, test head and ultrasonic knife of the present invention. Figure 1 ;

[0035] Figure 4 This is a schematic diagram of the assembly between the clamping frame, test head and ultrasonic knife of the present invention. Figure 2 ;

[0036] Figure 5 This is a schematic structural diagram of the test head of the present invention in an expanded state;

[0037] Figure 6 This is a schematic structural diagram of the test head of the present invention in a converged state;

[0038] Figure 7 is a schematic diagram of the disassembly of the test head of the present invention;

[0039] Figure 8 is a schematic diagram of the connecting frame, transmission member, clamp and latch of the test head of the present invention;

[0040] Figure 9 It is a schematic diagram of the splitting of the test head of the present invention in the converged state;

[0041] Figure 10 It is a schematic structural diagram of the connecting frame, the driving member, the transmission member, and the position a of the present invention;

[0042] Figure 112 is a schematic cross-sectional view of a pressure probe 1 of the present invention.

[0043] Figure 1: 1. ultrasonic knife; 11. knife bar; 12. blade slot; 2. clamping frame; 21. fork frame 1; 22. fork frame 2; 23. slide rail; 24. push piece; 25. limit seat; 3. frame; 4. joint; 41. connecting frame; 411. longitudinal opening; 412. support ear; 413. hinge seat; 414. adapter hole; 42. clamp 1; 421. clamp hole; 422. pin; 43. clamp 2; 44. clamp; 441. connecting shaft; 45. plug rod; 46. transmission member; 461. longitudinal sliding frame; 462. rocker arm; 463. center Shaft; 464, jib; 465, stabilizer bar; 466, cross mouth; 467, roller; 468, bushing; 47, steel rope; 471, casing; 472, attraction block; 473, electromagnet; 48, accommodating space; 49, socket; 5, overhead part; 51, mounting table; 52, annular gap; 6, end frame; 61, screw; 62, top plate; 63, screw cap; 7, pressure probe 1; 71, outer ring; 72, pressure sensor; 73, compensation gap; 74, support frame; 75, sliding bearing; 8, pressure probe 2; 9, pressure probe 3. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0045] like Figure 1 - Figure 11 As shown, this embodiment provides an ultrasonic scalpel head driving force test fixture, including a frame 3, which is formed by combining aluminum alloy rods and has a flat base plate in the middle for mounting other components;

[0046] During use, in order to solve the problems existing in existing equipment, the multi-directional driving force of the ultrasonic scalpel 1 is measured separately. The axial driving force improves the cutting ability, and the radial driving force is used to make the blade move at multiple angles to crush the tissue around the blade. Therefore, the multi-angle driving force has its expected effect and minimum index. In order to ensure that the detection is closer to the actual value, a specific configuration is provided:

[0047] For clamping frame 2, refer to Figure 1 and Figure 2The clamping frame 2 is fixed on the flat surface in the middle of the frame 3. Multiple clamping frames can be arranged side by side to provide multiple testing stations. When one ultrasonic knife 1 is being tested, other ultrasonic knives 1 can be disassembled and assembled, making full use of the testing time and reducing the invalid waiting time during the test. The clamping frame 2 has the ability to open and close horizontally. When opened, the ultrasonic knife 1 can be placed. When closed, the ultrasonic knife 1 is pressed tightly so that the ultrasonic knife 1 is fixed in a horizontal position and waits for the driving force test.

[0048] For test heads, refer to Figure 3 、 Figure 5 、 Figure 6 and Figure 7 , the test head is located at the end of the blade rod 11 of the ultrasonic knife 1, wherein the joint part 4 can be adapted to the end of the blade rod 11 in an openable and closable manner, and can be fixedly connected to the blade rod 11, replacing the blade as the load of the blade rod 11, simulating a more realistic working scene, and forming an accommodating space 48 for installing a driving force detection sensor. Specifically, the overhead part 5 is fixed to a coaxial position of the blade rod 11, and the overhead part 5 is fixedly installed with a three-axis pressure probe array in the accommodating space 48. The three-axis pressure probe array consists of pressure probe 1 7, pressure probe 2 8 and pressure probe 3 9. Pressure probe 1 7, pressure probe 2 8 and pressure probe 3 9 respectively contact the inner wall of the accommodating space 48 to detect the driving force in the left and right directions, front and back directions and vertical directions respectively. Compared with only detecting the driving force in the axial direction of the blade rod 11, this multi-angle driving force detection is more comprehensive and closer to the actual situation.

[0049] For end bracket 6, refer to Figure 4 and Figure 5 The end frame 6 is fixed to the end of the clamping frame 2, specifically, it is close to the end of the tool rod 11. The end frame 6 is connected to the overhead part 5 through the screw 61 and the self-locking nut. Loosen the self-locking nuts on the upper and lower sides of the overhead part 5 to make it away from the overhead part 5, so that the height of the overhead part 5 can be adjusted, and then the vertical position of the three-axis pressure probe array can be adjusted. After that, reverse the self-locking nut to tighten the overhead part 5 to complete the fixation, so that it is coaxial with the tool rod 11, so that it can be directly inserted into the joint part 4 to complete the center contact.

[0050] In a further embodiment, referring to Figure 3 and Figure 4 The clamping frame 2 includes a slide rail 23, on which a fork frame 1 21 is slidably mounted. The distance between the fork frame 1 21 and the fork frame 2 22 is opened, and the slide rail 23 plays a guiding role when the fork frame 1 21 slides. The fork frame 22 is fixedly mounted on the end of the slide rail 23, and the fork frame 1 21 can be squeezed and pushed toward the fork frame 2 22 by the pushing member 24. The fork frame 22 is fixed and has a U-shaped opening with an opening upward. The fork frame 1 21 is also provided with a U-shaped opening with an opening upward, so that the ultrasonic scalpel 1 can be horizontally placed in the two U-shaped openings for centering and limiting. The ultrasonic scalpel 1 is then pressed and tightened by the fork frame 2 22 to achieve rapid radial fixation of the ultrasonic scalpel 1.

[0051] Among them, reference Figure 4 , discloses a specific configuration of a fork frame 21 driving structure, wherein the push member 24 is composed of a crank and a push rod, the middle part of the crank is hinged to the end of the push rod, the distal end of the push rod is hingedly mounted with a cylinder, the lower end of the crank is hinged to the frame 3 at the end of the slide rail 23, and the upper end of the crank is pushed to slide the cylinder horizontally, the cylinder is provided with a guide seat and mounted on the slide rail 23, and the cylinder is detachably connected to the fork frame 21 by bolts, and a limit seat 25 is provided under the crank, and the limit seat 25 and the crank are detachably connected by a pin rod, so that the fork frame 22 can be translated and pressed against the ultrasonic knife 1 After tightening, the limiting hole on the crank is aligned with the transverse hole on the limiting seat 25, and the pin rod can be inserted between the limiting hole and the transverse hole to fix the crank, thereby locking the position of the fork frame 22. Similarly, the crank and the push rod can be replaced with a horizontally arranged hydraulic cylinder, which can automatically extend and limit the fork frame 21. The automated hydraulic cylinder is faster to operate, but requires external hydraulic drive equipment, which is more expensive. It can also be replaced with other forms of linear power sources to drive the fork frame 21 to move horizontally and self-lock, which will not be repeated here.

[0052] In a further embodiment, referring to Figure 7 and Figure 8 In order to realize faster disassembly and assembly of the joint part 4 and the knife bar 11, a specific configuration is provided. The joint part 4 includes a connecting frame 41. A transfer hole 414 is opened in the middle of the connecting frame 41 in the vertical direction. Figure 9 , the clamp 1 42 and the clamp 2 43 are both installed with a vertical pin 422 at one end away from the knife rod 11, which is used to be hingedly installed with the adapter hole 414. The clamp 1 42 and the clamp 2 43 are formed with an arc-shaped inner wall adapted to the knife rod 11 at one end close to the knife rod 11. When the clamp 1 42 and the clamp 2 43 are close to each other, a cylindrical structure similar to a cylinder can be formed, which can fit the circumferential side wall of the knife rod 11 and be sleeved on the outside of the knife rod 11. The connecting frame 41 is located above the middle of the clamp 1 42 and the clamp 2 43. The lug 412 has a U-shaped clamp 44 rotatably mounted in the middle of the lug 412. The clamp 44 clamps the outside of the first clamp 42 and the second clamp 43 from top to bottom to clamp them tightly. The two ends of the clamp 44 are provided with hemispherical protrusions, and the middle of the first clamp 42 and the second clamp 43 are provided with a clamping hole 421 that cooperates with the hemispherical protrusions to ensure that the joint 4 is in firm contact with the knife bar 11. At the same time, when the clamp 44 swings 90 degrees counterclockwise, it can rotate above the first clamp 42 and the second clamp 43 to release them.

[0053] However, after the coaxial sleeve is installed, the axial driving force of the tool rod 11 can only be transmitted by the friction between the clamp 1 42 and the clamp 2 43 and the outer wall of the tool rod 11. Once the coaxial sliding occurs, the driving force transmission will be lost and the detection accuracy will be reduced. Figure 8 and Figure 9The blade groove 12 of the knife bar 11 is a rectangular groove along the axial direction, and a circular through hole is provided at the bottom of the groove to avoid cracking there. Therefore, the connecting frame 41 is provided with an insert rod 45 at the through hole position of the blade groove 12 of the knife bar 11. The insert rod 45 is a cylinder with a vertical axis design. After the clamp 1 42 and the clamp 2 43 are sleeved on the end of the knife bar 11, a semicircular groove is provided at the position of the through hole of the blade groove 12 of the clamp 1 42 and the clamp 2 43 corresponding to the through hole position of the blade groove 12. In this way, when the clamp 1 42 and the clamp 2 43 are folded, the two semicircular grooves can form a perfect circular insert hole 49, and the insert rod 45 can be displaced in the vertical position to pass through the insert hole 49 and be inserted into the through hole of the blade groove 12. The insert rod 45 is inserted into the through hole position of the blade groove 12 from top to bottom, and at the same time, it is respectively clamped with the clamp 1 42 and the clamp 2 43 through the semicircular groove to prevent the clamp 1 42 and the clamp 2 43 from sliding along the axial direction of the knife bar 11, thereby avoiding insufficient measurement accuracy caused by relative displacement;

[0054] By using the clamp 44 to cooperate with the clamp 1 42 and the clamp 2 43 for axial fixation, and the insert rod 45 to cooperate with the clamp 1 42 and the clamp 2 43 for radial fixation, the multi-directional driving force of the tool rod 11 can be completely transmitted to the joint part 4, and then the joint part 4 can move at multiple angles relative to the overhead part 5, which can act on the three-axis pressure probe array to convert it into an electrical signal of the three-axis pressure probe array, thereby completing the detection of multi-angle driving force. It should be noted that in order to avoid the assembly gap between the three-axis pressure probe array and the inner wall of the accommodating space 48 affecting the conversion of displacement and electrical signal, an interference installation method is adopted. Specifically, it is achieved by reducing the inner diameter of the accommodating space 48. The height of the accommodating space 48 is less than the distance between the end faces of the upper and lower pressure probes 3 9, and the depth of the accommodating space 48 is less than 1 / 4". As for the distance that the pressure probe 2 8 extends into the accommodating space 48, the width of the accommodating space 48 is smaller than the distance between the end faces of the two pressure probes 1 7 on both sides, that is, when the clamp 1 42 and the clamp 2 43 approach each other and are tightened by the clamp 44, the inner wall of the accommodating space 48 composed of the clamp 1 42 and the clamp 2 43 will generate a pre-compression force on the three-axis pressure probe array. Before measurement, the three-axis pressure probe array is first reset to zero, and then the driving force measurement experiment is carried out, which can eliminate the influence of the assembly gap on the detection accuracy. Similarly, other methods of applying pre-tightening force to the three-axis pressure probe array to eliminate the assembly gap, such as pushing the probes of the three-axis pressure probe array toward the inner wall of the accommodating space 48 for a certain distance after assembly, etc., and the implementation structure, can be used as a direct replacement for this solution and will not be repeated here.

[0055] Reference Figure 8 and Figure 10, provides a specific driving structure of a clamp 44 and an insertion rod 45 to drive the clamp 44 to rotate counterclockwise and the insertion rod 45 to move upward, the joint 4 also includes a transmission member 46, the transmission member 46 has a longitudinal sliding frame 461, the longitudinal sliding frame 461 is a long strip structure, and the insertion rod 45 is fixed to the bottom end of the longitudinal sliding frame 461, and a horizontal opening 466 is provided at the position where the insertion rod 45 is installed on the longitudinal sliding frame 461 for sliding connection with the upper end of the rocker arm 462, and the rocker arm 462 is provided with a The assembly hole is used to be sleeved on the outside of the support ear 412 and assembled with the connecting frame 41. The clamp 44 is located at the rotation connection between the rocker arm 462 and the connecting frame 41 and is coaxially provided with a connecting shaft 441. At this time, the support ear 412 is designed to have a hollow through-hole shape to facilitate the installation of the connecting shaft 441. A steel rope 47 is coiled in the middle of the connecting shaft 441. The steel rope 47 is coiled counterclockwise on the outside of the connecting shaft 441. The rocker arm 462 extends a shorter auxiliary arm 464 near the position of the connecting shaft 441. The auxiliary arm 464 rotates The central axis 463 is dynamically installed, and the central axis 463 is overlapped under the longitudinal sliding frame 461. In addition, a bushing 468 is installed in the middle of the central axis 463 and is sleeved on the outside of the steel rope 47. The inner wall of the bushing 468 and the outer wall of the steel rope 47 are in friction contact with each other. In this way, when it is necessary to drive the clamp 44 to rotate counterclockwise and the insertion rod 45 to move upward, it is only necessary to pull the steel rope 47 to drive the clamp 44 to rotate counterclockwise 90 degrees and disengage from the clamp 1 42 and the clamp 2 43. At the same time, the steel rope 47 moves upward through the bushing 468. 8 drives the central axis 463 upward, so that the longitudinal sliding frame 461 drives the insertion rod 45 upward to separate from the knife rod 11. Because there is friction contact between the steel rope 47 and the bushing 468, the steel rope 47 can be wrapped around the outside of the connecting shaft 441 for multiple weeks, and sufficient steel rope 47 is reserved under the central axis 463 to ensure that there is sufficient length of steel rope 47 to complete the driving action of the clamp 44 and the insertion rod 45, so as to avoid the steel rope 47 being completely straightened before the clamp 44 swings or the insertion rod 45 completes its upward movement.

[0056] The rod 45 needs to move vertically up and down, so refer to Figure 8The longitudinal sliding frame 461 is provided with a roller 467 at one end near the connecting frame 41, and the connecting frame 41 is provided with a longitudinal opening 411 at the position corresponding to the roller 467. The roller 467 is installed in the longitudinal opening 411 and is provided with at least two rollers, which can contact the two side walls of the longitudinal opening 411 respectively. By rolling the roller 467 in the longitudinal opening 411, the inner wall of the longitudinal opening 411 can guide the end of the longitudinal sliding frame 461. The middle shaft 463 is overlapped and arranged in the middle of the lower side of the longitudinal sliding frame 461. The middle of the lower side of the longitudinal sliding frame 461 is provided with a card slot that matches the middle shaft 463. When the steel rope 47 goes up, the middle shaft 463 can be driven to move upward through the bushing 468, and the upward force is transmitted to the middle of the lower side of the longitudinal sliding frame 461. At the same time, the rocker arm 462 will also be driven to swing when the middle shaft 463 goes up, and the rocker arm The upper end of 462 slides and overlaps with the end of the longitudinal sliding frame 461 away from the roller 467, so that another upward force can be applied to the end of the longitudinal sliding frame 461. The two scattered action points simultaneously apply an upward force to the longitudinal sliding frame 461. One action point of the weapon is also located directly above the insertion rod 45, which can ensure that there is sufficient driving force to drive the insertion rod 45 upward to ensure smooth separation. At the same time, a stabilizing rod 465 is rotatably installed at the end of the central axis 463. The stabilizing rod 465 can be retracted and located on both sides of the longitudinal sliding frame 461. The stabilizing rod 465 is rotatably installed at the end away from the central axis 463 with a hinge seat 413. The hinge seat 413 is fixed to the middle side wall of the connecting frame 41. The stabilizing rod 465 can provide anti-twisting support when the longitudinal sliding frame 461 moves upward, thereby ensuring the vertical stability of the sliding of the longitudinal sliding frame 461.

[0057] In a further embodiment, referring to Figure 10 , a through-tube cooperating with the steel rope 47 is installed on the top of the connecting frame 41, and the through-tube guides the steel rope 47 to prevent the middle section of the steel rope 47 from being entangled on other parts. An attraction block 472 is installed on the end of the steel rope 47 away from the connecting shaft 441, and a sleeve 471 is installed on the outer side of the attraction block 472. An electromagnet 473 is installed on the end of the sleeve 471 away from the attraction block 472, and the magnetic force generated by the electromagnet 473 is energized to pull the attraction block 472, providing pulling power for the steel rope 47 to unlock the joint 4, so that the joint 4 can be quickly disassembled during the installation and debugging stage. A top plate 62 is fixedly installed on the outer side of the sleeve 471 , providing an installation position for the sleeve 471, a screw cap 63 is rotatably installed on the bottom surface of the top plate 62, and the screw cap 63 is detachably installed on the top of the screw rod 61, which can be quickly disassembled and fixed. Similarly, when the electromagnet 473 is damaged or the electromagnet 473 is not installed, the middle section of the steel rope 47 can be manually pulled when needed to provide the unlocking driving force for the joint 4. During the test, the joint 4 can be separated from the knife rod 11 by energizing the electromagnet 473 or directly pulling the steel rope 47 to simulate the situation where the blade on the knife rod 11 falls off, and whether the anti-falling function of the ultrasonic knife 1 with the blade falling off detection function is normal.

[0058] In a further embodiment, referring to Figure 9 , a vertical smooth hole is provided at the overhead part 5 corresponding to the screw 61, and the overhead part 5 can slide up and down along the screw 61, and cooperate with the fixation of the clamping frame 2. Because the ultrasonic knife 1 has different models, the knife rod 11 will have different heights after being clamped. After the joint part 4 is fixed to the knife rod 11, the height of the overhead part 5 needs to be adjusted to ensure that the three-axis pressure probe array is centrally arranged in the accommodating space 48, ensuring that the pressure probe 1 7, the pressure probe 2 8 and the pressure probe 3 9 can all contact the inner wall of the accommodating space 48 for multi-directional detection. At the same time, the overhead part 5 is located at one end inside the accommodating space 48 and is provided with a mounting platform 51. The mounting platform 51 provides the required mounting positions, specifically, there can be three directions and seven mounting positions, among which four pressure probes 1 7 and one pressure probe 3 9 can be installed. The paired design of force probe 2 8 and two pressure probes 3 9, and pressure probe 1 7 and pressure probe 3 9 can avoid the twisting or even falling off of the joint 4 caused by unbalanced force, and in order to prevent interference, the connecting frame 41 is mounted on the outside of the overhead part 5 to form an annular gap 52. The setting of the annular gap 52 makes the joint 4 and the overhead part 5 form a movable whole, avoiding scattered and inconvenient installation before installation and during preparation, and also preventing parts from being lost. After the joint 4 is installed on the tool rod 11, the annular gap 52 can prevent the driving force of the tool rod 11 from being directly transmitted to the fixed overhead part 5 and being partially offset, thereby ensuring that the driving force of the tool rod 11 acts on the three-axis pressure probe array only through the joint 4, thereby preventing the detected data from being less than the actual value.

[0059] In a further embodiment, referring to Figure 11, discloses a specific configuration of a pressure probe 7, which includes a coaxially arranged outer ring 71 and a pressure sensor 72, a compensation gap 73 being formed between the outer ring 71 and the pressure sensor 72, a support frame 74 being installed in the compensation gap 73, and the support frame 74 being in direct contact with the inner wall of the outer ring 71 and the outer wall of the pressure sensor 72, the support frame 74 being an elastic structure and being able to deform under pressure, and cooperating with the compensation gap 73, so that the pressure sensor 72 can slide with two degrees of freedom in the outer ring 71, this design enables the pressure sensor 72 to detect the force acting perpendicularly on the end face of the pressure sensor 72, while the force parallel to the end face of the pressure sensor 72 will be offset by the same-direction sliding of the pressure sensor 72, and at the same time, a sliding bearing 75 is installed at one end of the pressure sensor 72 on the inner side of the outer ring 71, which can be adaptively adjusted with small friction resistance Corresponding horizontal sliding, pressure probe 2 8 and pressure probe 3 9 have exactly the same structure as pressure probe 1 7 except for the installation position, that is, pressure probe 1 7 only detects the driving force in the horizontal direction, which is perpendicular to the axis of the tool rod 11, and the driving forces in the other two directions will be offset by driving pressure probe 1 7 to slide; pressure probe 2 8 only detects the driving force in the same direction as the axis of the tool rod 11, and the driving forces in the other two directions will be offset by driving pressure probe 2 8 to slide; pressure probe 3 9 only detects the driving force in the vertical direction, which is perpendicular to the axis of the tool rod 11, and the driving forces in the other two directions will be offset by driving pressure probe 3 9 to slide, thereby preventing the driving forces of multiple degrees of freedom of the tool rod 11 from acting on the same fixed pressure sensor 72 to generate a resultant force, and avoiding insufficient detection accuracy caused by interference of multi-angle driving forces.

[0060] Through the above technical solution, the pressure sensor 72 can detect the force acting vertically on the end face of the pressure sensor 72, and the force parallel to the end face of the pressure sensor 72 will be offset by the sliding of the pressure sensor 72, ensuring stable installation during long-term detection, and can reduce the impact of multi-degree-of-freedom movement on detection accuracy through adaptive horizontal sliding.

[0061] The working principle of this embodiment is as follows:

[0062] Clamp the ultrasonic scalpel 1 horizontally and centrally on the clamping frame 2. Adjust the position of the overhead portion 5 relative to the screw 61 above the end frame 6 so that the overhead portion 5 is at the same height as the blade rod 11 of the ultrasonic scalpel 1. This completes the coaxial arrangement of the three-axis pressure probe array (pressure probe 1 7, pressure probe 2 8, and pressure probe 3 9) relative to the blade rod 11.

[0063] The first clamp 42 and the second clamp 43 of the joint part 4 are brought close to each other and clamped with the clamp 44, and then clamped to the end of the blade rod 11 of the ultrasonic knife 1. Then, the insertion rod 45 is inserted into the blade groove 12 on the blade rod 11 through the insertion hole 49 formed by the first clamp 42 and the second clamp 43, so that the joint part 4 can move freely with the blade rod 11 without relative displacement;

[0064] At this time, the triaxial pressure probe array is located in the accommodating space 48 formed by the first clamp 42 and the second clamp 43. The accommodating space 48 opens toward the overhead portion 5 and has a flat end face and inner wall. The first pressure probe 7 directly contacts the vertical side wall of the accommodating space 48 parallel to the axis of the tool rod 11. The second pressure probe 8 directly contacts the vertical side wall of the accommodating space 48 perpendicular to the axis of the tool rod 11. The third pressure probe 9 directly contacts the horizontal side wall of the accommodating space 48 parallel to the axis of the tool rod 11. When the joint 4 moves at multiple angles with the tool rod 11, the driving force in the three-axis directions can be collected separately through the triaxial pressure probe array, and the driving force detection is more comprehensive and in line with reality.

[0065] After the driving force test is completed, the ultrasonic scalpel 1 does not stop working. The steel rope 47 is directly used to pull the transmission member 46, causing the insertion rod 45 to move upward and disengage from the scalpel rod 11. The clamp 44 swings to loosen the clamp 1 42 and the clamp 2 43, so that the joint 4 is separated from the scalpel rod 11, simulating the situation where the load (blade or blade fastener) on the scalpel rod 11 falls off, and testing whether the anti-slip function of the ultrasonic scalpel 1 is normally activated (equipment such as the Johnson & Johnson ETHICON HAR1120 ultrasonic high-frequency surgical integrated system ultrasonic scalpel head and the SoniCure® ultrasonic soft tissue cutting and hemostasis device independently developed by Beijing Sino Micro Medical Technology Co., Ltd. all have this anti-slip shutdown function). If the ultrasonic scalpel 1 stops working the moment the joint 4 is disengaged, it means that the anti-slip function is normal. This setting makes the driving force testing equipment more applicable. At the same time, the steel rope 47 can be in a relaxed state during the driving force test of the ultrasonic scalpel 1 to prevent the driving force from being transmitted outward along the taut steel rope 47, thereby ensuring the detection accuracy.

[0066] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention.

Claims

1. An ultrasonic scalpel head driving force testing tool, comprising a frame (3), characterized in that: Also includes: A clamping frame (2) fixed to the flat surface of the frame (3), the clamping frame (2) having the ability to open and close horizontally, and the clamping frame (2) is used to horizontally fix and press the ultrasonic knife (1) placed thereon; A test head is located at the end of the blade rod (11) of the ultrasonic knife (1), the test head includes a joint (4) and an overhead portion (5), the joint (4) can be adapted to the end of the blade rod (11) in an openable and closable manner to form a receiving space (48), the overhead portion (5) is fixed to a coaxial position of the blade rod (11), and a three-axis pressure probe array is fixedly installed on the overhead portion (5) in the receiving space (48), the three-axis pressure probe array is composed of pressure probe 1 (7), pressure probe 2 (8) and pressure probe 3 (9), so as to realize contact monitoring of the joint (4) in the vertical, horizontal and depth directions; An end frame (6) is fixed to the end of the clamping frame (2), and the end frame (6) is connected to the overhead portion (5) through a screw (61) and a self-locking nut to achieve vertical position adjustment of the three-axis pressure probe array.

2. The ultrasonic scalpel head driving force testing tool according to claim 1, characterized in that: The clamping frame (2) includes a slide rail (23), a fork frame 1 (21) is slidably mounted on the slide rail (23), a fork frame 2 (22) is fixedly mounted at the end of the slide rail (23), and the fork frame 1 (21) can be pushed toward the fork frame 2 (22) by a pushing member (24).

3. The ultrasonic scalpel head driving force testing tool according to claim 2, characterized in that: The pushing member (24) is composed of a crank and a push rod. The middle part of the crank is hinged to the end of the push rod. The distal end of the push rod is hinged to a cylinder. The cylinder is covered with a guide seat and is slidably mounted on a slide rail (23). The cylinder is detachably connected to a fork frame (21) by a bolt. A limit seat (25) is provided below the crank. The limit seat (25) is detachably connected to the crank through a pin rod.

4. The ultrasonic scalpel head driving force testing tool according to claim 1, characterized in that: The joint (4) includes a connecting frame (41), a clamp 1 (42) and a clamp 2 (43) are hinged on the connecting frame (41), and the ends of the clamp 1 (42) and the clamp 2 (43) form an arc-shaped inner wall adapted to the knife rod (11). The connecting frame (41) is provided with a clamp (44), and the clamp (44) presses the clamp 1 (42) and the clamp 2 (43) on the end of the knife rod (11) in a vertical position. The clamp (44) can swing ninety degrees to realize the release of the clamp 1 (42) and the clamp 2 (43).

5. The ultrasonic scalpel head driving force testing tool according to claim 4, characterized in that: The connecting frame (41) is provided with an insertion rod (45) at the position of the through hole of the blade slot (12) of the knife rod (11); the first clamp (42) and the second clamp (43) form a semicircular groove at the position of the through hole of the blade slot (12); the two semicircular grooves are combined into a perfect circular insertion hole (49); the insertion rod (45) can be vertically displaced to pass through the insertion hole (49) and inserted into the through hole of the blade slot (12).

6. The ultrasonic scalpel head driving force testing tool according to claim 5, characterized in that: The joint (4) further includes a transmission member (46), the transmission member (46) having a longitudinal sliding frame (461), a rocker arm (462) slidably mounted on the longitudinal sliding frame (461) at a transverse opening (466), and rotatably connected to the connecting frame (41), the top of the insertion rod (45) is fixed to the bottom of the longitudinal sliding frame (461), the first clamp (42) and the second clamp (43) are coaxially arranged on a connecting shaft (441), a steel rope (47) is coiled in the middle of the connecting shaft (441), the rocker arm (462) is rotatably mounted on a central shaft (463) near the connecting shaft (441), and a bushing (468) is sleeved on the middle of the central shaft (463) on the outside of the steel rope (47).

7. The ultrasonic scalpel head driving force testing tool according to claim 6, characterized in that: A roller (467) is installed at one end of the longitudinal sliding frame (461), and the roller (467) corresponds to the longitudinal opening (411) of the connecting frame (41). A central axis (463) is provided below the middle of the longitudinal sliding frame (461), and a stabilizing rod (465) is rotatably installed at the end of the central axis (463). The end of the stabilizing rod (465) away from the central axis (463) is hinged to the connecting frame (41).

8. The ultrasonic scalpel head driving force testing tool according to claim 6, characterized in that: The top of the connecting frame (41) is provided with a through-tube that cooperates with the steel rope (47), an attraction block (472) is installed at one end of the steel rope (47), a sleeve (471) is sleeved on the outside of the attraction block (472), an electromagnet (473) is installed on the other end of the sleeve (471), a top plate (62) is fixed on the outside of the sleeve (471), and the top plate (62) is detachably mounted on the top of the screw (61) through a screw cap (63).

9. The ultrasonic scalpel head driving force testing tool according to claim 4, characterized in that: The overhead portion (5) is provided with a vertical smooth hole to match the screw (61). The mounting platform (51) at one end of the overhead portion (5) in the accommodating space (48) is fixed with four pressure probes 1 (7), one pressure probe 2 (8) and two pressure probes 3 (9). The connecting frame (41) is sleeved on the outside of the overhead portion (5) to form an annular gap (52).

10. The ultrasonic scalpel head driving force testing tool according to claim 1, characterized in that: The pressure probe 1 (7) comprises an outer ring (71) and a pressure sensor (72) arranged coaxially, a compensation gap (73) is provided between the outer ring (71) and the pressure sensor (72), a support frame (74) is installed in the compensation gap (73) to directly contact the inner wall of the outer ring (71) and the outer wall of the pressure sensor (72), and a sliding bearing (75) is installed at the end of the pressure sensor (72). The structures of the pressure probe 2 (8) and the pressure probe 3 (9) are the same as those of the pressure probe 1 (7), and only the installation positions are different.

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