An ultrasonic blade positioning device

Abstract

The application provides an ultrasonic knife positioning device, and relates to the field of medical instrument testing tools, which comprises a bottom plate, a first moving track, a second moving track, a rotating platform and a setting table, the first moving track is arranged on the bottom plate in a first direction; the second moving track is arranged on the first moving track in a second direction, the second moving track can move on the first moving track in the first direction, and the first direction intersects with the second direction; the rotating platform is slidably arranged on the second moving track, and is used for adjusting the orientation of a knife rod or a bare knife rod; and the setting table is arranged on the bottom plate and is used for mounting an optical head. The ultrasonic knife positioning device can guarantee the accuracy of the amplitude measurement result of the ultrasonic knife, is convenient to use, has strong adjustability, can perform multiple amplitude tests on the same type of ultrasonic knife after one-time adjustment, and has high practicability and repeatability.

Description

Technical Field

[0001] This invention relates to the field of medical device testing fixtures, and in particular to an ultrasonic scalpel positioning device. Background Technology

[0002] The ultrasonic scalpel uses ultrasonic energy to achieve hemostasis and cutting of soft tissue. It is a novel surgical device used in clinical surgery, applicable to the cutting of human soft tissues except for bone tissue and fallopian tube ligation. It has been widely used in various open and laparoscopic surgeries. As an important medical device in clinical surgery, the ultrasonic scalpel has become one of the high-tech products that various companies are vying to develop in recent years.

[0003] The amplitude of the ultrasonic scalpel tip is a crucial parameter during operation, representing a significant performance indicator of the ultrasonic system's output power. The output power is directly proportional to the square of the amplitude displacement. Insufficient amplitude can negatively impact cutting and coagulation, prolonging surgery time and potentially hindering effective tissue cutting and coagulation. Conversely, excessive amplitude reduces the scalpel's hand stability, shortens its lifespan, and increases the risk of breakage and misoperation during surgery. Therefore, it is essential to measure the ultrasonic scalpel tip's amplitude before surgery. However, this measurement requires precise control over the scalpel's placement angle, the relative distance and height between the optical head and the scalpel tip. Simple contouring elements can only ensure stable placement; angles, heights, and distances require manual adjustment. However, manual adjustment suffers from significant errors, poor stability, and low repeatability, and inevitably involves considerable time spent adjusting the equipment, resulting in low overall testing efficiency. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide an ultrasonic scalpel positioning device to solve the problems of large adjustment error, poor stability and low repeatability in fixing and positioning ultrasonic scalpels in the prior art.

[0005] To achieve the above and other related objectives, the present invention provides an ultrasonic scalpel positioning device, comprising:

[0006] Base plate,

[0007] A first transport track is disposed on the base plate along a first direction;

[0008] A second transport track is disposed on the first transport track along a second direction, and the second transport track can move along the first direction on the first transport track, wherein the first direction and the second direction intersect.

[0009] A rotating platform is slidably mounted on the second transport track, and the rotating platform is used to adjust the orientation of the ultrasonic scalpel's handle or bare handle;

[0010] A mounting platform is provided on the base plate and is used to mount an optical head.

[0011] Optionally, the ultrasonic scalpel has a handle and a blade connected to the handle. The blade has a rear end connected to the handle and a front end for clamping tissue. Two second transport tracks are provided on the first transport track. Each second transport track extends along the second direction. The two second transport tracks are arranged sequentially along the first direction. A second fixing component for fixing the bare blade is provided on the second transport track closer to the mounting platform, and a first fixing component for fixing the handle is provided on the second transport track farther from the mounting platform.

[0012] Optionally, the bare blade of the ultrasonic scalpel has a blade pin hole, and the first fixing component is provided with a first positioning blind hole corresponding to the blade pin hole. A positioning pin is provided in the first positioning blind hole, and the positioning pin is used to pass through the blade pin hole and enter the first positioning blind hole to position the orientation of the bare blade.

[0013] Optionally, the second fixing component includes a positioning block and a cover block placed on the positioning block. Both the positioning block and the cover block have grooves. When the cover block is placed on the positioning block, the grooves on the positioning block and the cover block together limit and fix the front end of the bare blade rod. Each groove is provided with a buffer.

[0014] Optionally, the cushioning element is made of rubber.

[0015] Optionally, the rotating platform is a micrometer rotary table.

[0016] Optionally, the second transport track is provided with a first slider for sliding on the first transport track, and the first slider is provided with a fixing member for fixing the second transport track on the first transport track;

[0017] The rotating platform is mounted on a second slider that slides on the second transport track, and the second slider is provided with a fixing member for fixing the rotating platform on the second transport track.

[0018] Optionally, the fastener is a bolt, which is fixed against the first or second transport track.

[0019] Optionally, the second transport track is arc-shaped, with the concave surface of the arc facing the mounting platform.

[0020] Optionally, the mounting platform includes a manual lifting platform and an optical head mounting platform, wherein the manual lifting platform can adjust the height of the optical head mounting platform.

[0021] As described above, the ultrasonic scalpel positioning device of the present invention has the following beneficial effects: by setting a first transport track, a second transport track, and a rotating platform, the ultrasonic scalpel can be easily adjusted so that the laser is perpendicularly directed onto the plane of the ultrasonic scalpel tip, reducing light scattering caused by the laser not being perpendicularly directed onto the plane of the ultrasonic scalpel tip, and ensuring the accuracy of the ultrasonic scalpel amplitude measurement results. Furthermore, the ultrasonic scalpel positioning device is easy to use and highly adjustable. After one adjustment, multiple amplitude tests can be performed on the same type of ultrasonic scalpel, exhibiting high practicality and repeatability. Attached Figure Description

[0022] Figure 1 The diagram shown is a structural schematic of the ultrasonic scalpel positioning device of the present invention.

[0023] Figure 2 The diagram shown is one of the structural schematics of the ultrasonic scalpel positioning device of the present invention for detecting ultrasonic scalpels.

[0024] Figure 3 The second schematic diagram shows the structure of the ultrasonic scalpel positioning device of the present invention for detecting the ultrasonic scalpel.

[0025] Figure 4 The image shown is a top view of the ultrasonic scalpel positioning device of the present invention detecting the ultrasonic scalpel.

[0026] Figure 5 The diagram shown is a structural schematic of the rotating platform in this invention.

[0027] Figure 6 The diagram shown is an enlarged view of the structure of the placement platform in this invention.

[0028] Figure 7 The image shown is an enlarged view of the optical head mounting platform in this invention.

[0029] Figure 8 The image shown is an enlarged view of the structure of the positioning block and the cover block in this invention.

[0030] Figure 9 The second image shows an enlarged view of the structure of the positioning block and the cover block in this invention.

[0031] Labeling Explanation: 1-Base plate; 2-First transport track; 3-Fixed component; 4-First slider; 5-Second slider; 6-Second transport track; 7-Placement platform; 8-Rotating platform; 9-Manual lifting platform; 10-Optical head mounting platform; 11-Scalpel bar; 12-Handle; 13-Positioning block; 14-Cover block; 15-Ultrasonic scalpel; 16-Positioning pin; 17-Air-avoiding sinking platform; 18-Bare scalpel bar; 19-Guide column; 20-Rotating handle; 21-Locking knob; 22-Fine adjustment knob; 23-Limit knob; 24-Optical head. Detailed Implementation

[0032] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0033] Please see Figures 1 to 9 It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show components relevant to the present invention and are not drawn according to the actual number, shape, and size of components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the component layout may be more complex. The structures, proportions, and sizes shown in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of the present invention, should still fall within the scope of the technical content disclosed in the present invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are only for clarity of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the present invention.

[0034] Before describing the embodiments of the present invention in detail, a more in-depth description of the background technology of the present invention will be given. Commonly used methods for testing the amplitude of ultrasonic scalpels include optical microscopy, laser vibrometer, and feedback voltage method. Among them, optical microscopy is a commonly used measurement method, and its measurement accuracy is higher than the other two.

[0035] The following is a brief introduction to these three methods:

[0036] 1. Optical Microscopy Method (Spot Method): This method uses an external light source to illuminate the area to be measured by the ultrasonic scalpel. Due to the irregular undulations on the surface of the ultrasonic scalpel, individual spot lights are formed. During operation, these spot lights form a straight line following the trajectory of the ultrasonic scalpel. The imaging delay effect of the microscope is used to capture an image of this straight line, and the amplitude data is obtained by calculating the distance between the lines in the image. However, this method requires manual adjustment of the beam, microscope position, and parameters during measurement. Furthermore, since the microscope can only image a flat surface, obtaining complete amplitude data for an uneven ultrasonic scalpel tip takes a long time. The method is also susceptible to inaccurate data due to human error, structural factors, etc.

[0037] 2. Laser Vibration Measurement Method: This method involves emitting a sufficiently fine laser beam onto the area to be measured by the ultrasonic scalpel, ensuring the laser beam is perpendicular to the area. The amplitude data is calculated using the laser reflection interval. However, this method can only measure amplitude information within a very small area. To measure the amplitude distribution across the entire surface, numerous repeated tests are required, resulting in low efficiency and inconvenience.

[0038] 3. Feedback Voltage Method: This method is only applicable to ultrasonic scalpels with an amplitude feedback system directly coupled to the tip of the ultrasonic scalpel. The feedback voltage is proportional to the tip amplitude of the ultrasonic scalpel, and amplitude data is obtained by monitoring the feedback voltage. However, this method can only measure the average amplitude of the ultrasonic scalpel tip and cannot measure the amplitude data of a specific region.

[0039] In this invention, an ultrasonic scalpel positioning device is used in laser vibrometer testing. The patent "An Ultrasonic Scalpel Positioning Device" (authorization announcement number: CN_210550680_U) discloses an ultrasonic scalpel positioning device, including a base and a scalpel positioning component. The scalpel positioning seat is disposed on the base. The scalpel positioning component includes a scalpel support, a scalpel clamping assembly, and a first pressure control valve. The scalpel support has a scalpel positioning groove for embedding the scalpel. The scalpel clamping assembly includes a scalpel pressure head for pressing the scalpel into the scalpel positioning groove and a first power cylinder for moving the pressure head closer to or away from the scalpel. The first pressure control valve controls the working pressure of the first power cylinder. The ultrasonic scalpel positioning device in the above patent can improve the consistency of ultrasonic scalpel positioning, thereby reducing the adverse effects of inconsistent positioning on test parameters. However, this patent does not solve the alignment problem between the optical head and the ultrasonic scalpel lens.

[0040] Please see Figures 1 to 4This invention provides an ultrasonic scalpel positioning device, comprising a base plate 1, a first transport track 2, a second transport track 6, a rotating platform 8, and a mounting platform. The first transport track 2 is disposed on the base plate 1 along a first direction; the second transport track 6 is disposed on the first transport track 2 along a second direction and is movable along the first direction, the first and second directions intersecting; the rotating platform 8 is disposed on the second transport track 6 and is used to adjust the orientation of the ultrasonic scalpel's blade 11 or bare blade 18; the mounting platform is disposed on the base plate 1 and is used to mount an optical head. By setting the first transport track 2, the second transport track 6, and the rotating platform 8, the orientation of the blade 11 and the bare blade 18 can be easily adjusted, ensuring that the light beam from the optical head is perpendicularly incident on the blade tip plane, reducing light scattering caused by the laser not being perpendicularly incident on the blade tip plane, and avoiding inaccurate amplitude measurements of the ultrasonic scalpel 15 and the bare blade 18 due to light scattering.

[0041] The ultrasonic scalpel 15 includes a handle 12 and a blade 11 connected to the handle 12. The blade 11 of the ultrasonic scalpel 15 has a rear end connected to the handle 12 and a front end for clamping tissue. Two second transport tracks 6 are provided on the first transport track 2, each extending along a second direction. The two second transport tracks 6 are arranged sequentially along a first direction. A second fixing component for fixing the bare blade 18 is provided on the second transport track 6 closer to the platform, and a first fixing component for fixing the handle 12 is provided on the second transport track 6 farther from the platform. In this embodiment, the blade 11 of the ultrasonic scalpel 15 includes a bare blade 18, an inner tube, and an outer tube. The inner tube is axially disposed within the outer tube, and the bare blade 18 is axially disposed within the inner tube and fixed within the inner tube by adhesive coating. When directly measuring the bare blade 18, the front end of the bare blade 18 experiences large swaying amplitude during excitation or position adjustment. This large swaying amplitude increases the difficulty of spot positioning, and the spot concentration is prone to instability during excitation of the bare blade 18. Therefore, when directly measuring the bare tool rod 18, the front end of the bare tool rod 18 needs to be fixed to ensure the accuracy and precision requirements of the amplitude measurement at the front end of the bare tool rod 18.

[0042] In detail, such as Figure 6As shown, the bare blade rod 18 has a blade pin hole, and the first fixing component has a first positioning blind hole corresponding to the blade pin hole. A positioning pin 16 is provided in the first positioning blind hole. The positioning pin 16 is used to pass through the blade pin hole and enter the first positioning blind hole to position the blade tip orientation of the bare blade rod 18. The positioning pin 16 and the first positioning blind hole can fix the rear end of the bare blade rod 18, preventing the rear end of the bare blade rod 18 from shifting its orientation during the fixing of the front end of the bare blade rod 18, which would require repeated adjustments to the orientation of the bare blade rod 18 and thus affect the detection efficiency. In addition, since the bare blade rod 18 is connected to the inner tube through a blade pin with a heat-shrink sleeve in the blade rod 11, to simulate the state of the bare blade rod 18 when it is activated, the positioning pin 16 should not be in direct contact with the bare blade rod 18. The positioning pin 16 can be removed or a heat-shrink sleeve can be used to isolate it. By heating the locating pin 16 with a shrinkable sleeve, the locating pin 16 can be left in place during the arousal of the bare blade 18, which facilitates measurement.

[0043] Specifically, such as Figure 1 , Figure 8 and Figure 9 As shown, the second fixing component includes a positioning block 13 and a cover block 14 placed on the positioning block 13. Both the positioning block 13 and the cover block 14 have grooves. When the cover block 14 is placed on the positioning block 13, the grooves on the positioning block 13 and the cover block 14 together limit and fix the front end of the bare blade 18. Buffer elements are provided in the grooves. As can be seen, the blade 11 of the ultrasonic scalpel 15 includes a bare blade 18, an inner tube, and an outer tube. The inner tube is axially fitted inside the outer tube, and the bare blade 18 is axially fixed inside the inner tube by adhesive coating. Therefore, while fixing the front end of the bare blade 18, it is also necessary to simulate the fixed state of the bare blade 18 in the inner tube. Therefore, buffer elements are provided in the grooves of the positioning block 13 and the cover block 14 respectively. Simulating the state of the bare blade 18 fixed in the inner tube also fixes the bare blade 18, preventing the front end of the bare blade 18 from shaking during measurement, which would affect the accuracy and precision of the bare blade 18 amplitude measurement results. In this embodiment, the buffer is made of rubber. The rubber has a similar hardness to the overmolded rubber, and by fixing the front end of the bare blade 18 with rubber, the state of the bare blade 18 within the inner tube is simulated, ensuring the accuracy and precision of the measurement results. The type of buffer can be adjusted according to actual production needs.

[0044] In detail, such as Figure 8As shown, the positioning block 13 is provided with a guide hole extending along the height direction of the positioning block 13, and the cover block 14 is provided with a guide post 19 that is inserted into the corresponding guide hole. By providing the guide hole and the guide post 19, the positioning block 13 and the cover block 14 can jointly fix the bare blade rod 18. The positioning block 13 is fixed to the rotating platform 8 with bolts for easy disassembly. The first fixing component includes a placement platform 7 for positioning the ultrasonic scalpel handle 12. The placement platform 7 has a recess that fits the outer surface of the ultrasonic scalpel handle 12. The placement platform 7 is fixed to the rotating platform 8 with bolts. If it is necessary to measure the amplitude of different models of products, different models of placement platforms can be replaced for matching.

[0045] Among them, such as Figures 1 to 3 As shown, a first slider 4 for sliding on the first transport track 2 is provided on the second transport track 6. A fixing member 3 for fixing the second transport track 6 to the first transport track 2 is provided on the first slider 4. A rotating platform 8 is provided on a second slider 5 for sliding on the second transport track 6. A fixing member 3 for fixing the rotating platform 8 to the second transport track 6 is provided on the second slider 5. By providing the fixing member 3, after adjusting the positions of the first slider 4 and the second slider 5, the positions of the first slider 4 and the second slider 5 can be fixed by the fixing member 3, thereby fixing the position of the rotating platform 8 relative to the base plate 1. This prevents accidental contact with the positioning device during testing, which could change the relative position of the rotating platform 8 and affect the amplitude measurement of the ultrasonic scalpel 15. The fixing member 3 also facilitates repeated measurements of the same model of ultrasonic scalpel 15. In this embodiment, the fixing member 3 is a bolt, which is used to fix the device against the first transport track 2 or the second transport track 6. Using bolts for fixing is simple in structure, easy to implement, and convenient for maintenance.

[0046] In detail, such as Figure 5 As shown, the rotary platform 8 is a micrometer rotary table. In this embodiment, a micrometer rotary table is provided on the second slider 5. The micrometer rotary table has a rotary handle 20 for coarse angle adjustment, a locking knob 21 for limiting the rotation of the rotary handle 20, a fine adjustment knob 22 for fine angle adjustment, and a limit knob 23 for limiting the rotation of the fine adjustment knob 22. Using the micrometer rotary table to adjust the extension direction of the tool holder 11 and the bare tool holder 18 can improve the accuracy of the adjustment and ensure the accuracy of amplitude measurement. The type of rotary platform 8 can be adjusted according to actual measurement needs.

[0047] Among them, such as Figure 4As shown, the second transport track 6 is arc-shaped, with its concave surface facing the mounting platform. In this embodiment, the mounting platform is located at one end of the first transport track 2, and an optical head 24 is mounted on the mounting platform. It is understood that light travels in a straight line. Since the angle of the optical head 24 is difficult to adjust after it is mounted on the mounting platform, the light emitted from the optical head 24 can only propagate in one direction. The arc-shaped second transport track 6 reduces the rotation amount of the rotating platform 8 and decreases the intensity of adjustment.

[0048] In this embodiment, the mounting platform includes a manual lifting platform 9 and an optical head mounting platform 10. The manual lifting platform 9 allows for adjustment of the height of the optical head mounting platform 10. The manual lifting platform 9 is existing technology and will not be described in detail here. The manual lifting platform 9 facilitates adjustment of the optical head height, increasing the adjustability and applicability of the ultrasonic scalpel positioning device. The mounting platform can only have a reasonable adjustment range when the minimum height of the optical head from the base plate 1 is lower than the height of the scalpel rod 11 placed on the positioning device. In this embodiment, to prevent the optical head's feet from increasing the height of the beam emitted from the optical head from the base plate 1, a clearance platform 17 is provided on the optical head mounting platform 10 corresponding to the position of the optical head's feet.

[0049] When measuring amplitude using an ultrasonic scalpel positioning device, if measuring an ultrasonic scalpel 15 with an inner and outer tube, simply place the ultrasonic scalpel 15 with the handle 12 connected to it on the placement stage 7 and mate it with the blade mounting groove on the placement stage 7. Then, adjust the height of the optical head according to the height of the blade shank 11. Next, adjust the position of the first fixing component on the base plate 1 using the first transport track 2 and the second transport track 6. Adjust the orientation of the blade shank 11 using the rotating platform 8 so that the laser is perpendicularly incident on the tip plane of the ultrasonic scalpel 15. After adjustment, use the fixing component 3 to fix the position of the first fixing component, lock the rotating plane, and prevent the rotating plane from rotating. If measuring the amplitude of a bare blade shank 18, the rear end of the bare blade shank 18 needs to be fixed with a positioning pin 16, the front end of the bare blade shank 18 needs to be placed in the groove of the positioning block 13, and the cover block 14 needs to be pressed onto the positioning block 13 to fix the front end of the bare blade shank 18.

[0050] In summary, by setting up the first transport track 2, the second transport track 6, and the rotating platform 8, the positions of the ultrasonic scalpel 15 and the bare blade 18 can be easily adjusted, allowing the laser to enter the blade tip plane and reducing light scattering caused by the laser not being perpendicular to the blade tip plane, thus ensuring the accuracy of the amplitude measurement results of the ultrasonic scalpel 15 and the bare blade 18. Furthermore, the ultrasonic scalpel positioning device is easy to use and highly adjustable. After one adjustment, amplitude tests on ultrasonic scalpels 15 and bare blades 18 of the same model have high practicality and repeatability.

[0051] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An ultrasonic scalpel positioning device, characterized in that, include: Base plate, A first transport track is disposed on the base plate along a first direction; A second transport track is disposed on the first transport track along a second direction, and the second transport track can move along the first direction on the first transport track, wherein the first direction and the second direction intersect. A rotating platform is slidably mounted on the second transport track, and the rotating platform is used to adjust the orientation of the ultrasonic scalpel's handle or bare handle; A mounting platform is provided on the base plate and is used to mount an optical head. The ultrasonic scalpel has a handle and a blade connected to the handle. The blade has a rear end connected to the handle and a front end for clamping tissue. Two second transport tracks are provided on the first transport track. Each second transport track extends along the second direction. The two second transport tracks are arranged sequentially along the first direction. A second fixing component for fixing the bare blade is provided on the rotating platform of the second transport track near the mounting table. A first fixing component for fixing the handle is provided on the rotating platform of the second transport track away from the mounting table. The second fixing component includes a positioning block and a cover block placed on the positioning block. Both the positioning block and the cover block have grooves. When the cover block is placed on the positioning block, the grooves on the positioning block and the cover block together limit and fix the front end of the bare blade rod. Each groove is provided with a buffer to simulate the state of the bare blade rod being fixed with rubber coating in the inner tube. The ultrasonic scalpel has a scalpel pin hole on its bare blade. The first fixing component has a first positioning blind hole corresponding to the scalpel pin hole. A positioning pin is provided in the first positioning blind hole. The positioning pin is used to pass through the scalpel pin hole and enter the first positioning blind hole to position the blade tip orientation of the bare blade.

2. The ultrasonic scalpel positioning device according to claim 1, characterized in that: The cushioning element is made of rubber.

3. The ultrasonic scalpel positioning device according to claim 1, characterized in that: The rotating platform is a micrometer rotating platform.

4. The ultrasonic scalpel positioning device according to claim 1, characterized in that: The second transport track is provided with a first slider for sliding on the first transport track, and the first slider is provided with a fixing member for fixing the second transport track on the first transport track; The rotating platform is provided with a second slider that slides on the second transport track, and the second slider is provided with a fixing member for fixing the rotating platform on the second transport track.

5. The ultrasonic scalpel positioning device according to claim 4, characterized in that: The fastener is a bolt, which is fixed against the first or the second transport track.

6. The ultrasonic scalpel positioning device according to claim 1, characterized in that: The second transport track is arc-shaped, with the concave surface of the arc facing the mounting platform.

7. The ultrasonic scalpel positioning device according to claim 1, characterized in that: The mounting platform includes a manual lifting platform and an optical head mounting platform. The manual lifting platform can adjust the height of the optical head mounting platform.

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