Ultrasonic scalpel rod, ultrasonic scalpel handle and ultrasonic surgical instrument
By designing that the top of the ultrasonic scalpel rod is the maximum amplitude point, the length is a preset integer multiple, and the cross-sectional area is gradually reduced at the energy output end, the ultrasonic scalpel rod cannot output ultrasonic energy and machinery in the prior art. The problem of insufficient strength has achieved higher mechanical strength and surgical results.
Patent Information
- Application Number
- CN202420511595.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-17
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-03-17
AI Technical Summary
The existing ultrasonic scalpel rod cannot effectively adapt to actual surgical scenarios during minimally invasive surgery, resulting in the maximum amplitude of the proximal end of the blade rod being unable to output ultrasonic energy, and the mechanical strength is insufficient, making it prone to break.
An ultrasonic scalpel rod is designed with the top of the ultrasonic wave set at the maximum amplitude point of the ultrasonic wave, the length is a preset integer multiple of the half wavelength of the ultrasonic wave (5 to 11 times), and the cross-sectional area at the energy output end is from the bottom to the top Gradually reduce, increase mechanical strength, and install an anti-bonding coating on the toolbar to improve service life.
It realizes that the mechanical strength of the ultrasonic scalpel rod is improved, the risk of fracture is reduced, the surgical effect and accuracy are improved, and the service life of the cutting rod is extended.
Smart Images
Figure CN222510421U_ABST
Abstract
Description
Technical Field
[0001] The embodiments of the present application relate to the technical field of medical devices, and specifically to an ultrasonic surgical knife rod, an ultrasonic surgical knife handle, and an ultrasonic surgical instrument. Background Art
[0002] As people pay more and more attention to health, the performance requirements for medical devices are getting higher and higher, especially for some minimally invasive surgeries with less trauma, which require higher performance of surgical instruments. Therefore, applying ultrasonic surgical instruments in the field of minimally invasive surgery is an important application direction of ultrasonic surgical instruments.
[0003] The ultrasonic knife bar suitable for minimally invasive surgery is relatively long, and the cutting area at the distal end of the knife bar needs to produce a larger amplitude. Therefore, the proximal end of the knife bar needs to provide a larger ultrasonic energy to ensure that the cutting area at the distal end of the knife bar produces a larger amplitude, and the working life of the knife bar also needs to be guaranteed. The current ultrasonic surgical knife bar has a relatively arbitrary length setting, and it is impossible to ensure that the proximal end of the knife bar outputs ultrasonic energy with the maximum amplitude while adapting to the actual surgical scene. In addition, the shape and size of the energy output end are not specially designed, and the mechanical strength of the energy output end cannot be guaranteed. Utility Model Content
[0004] The embodiments of the present application propose an ultrasonic surgical knife rod, an ultrasonic surgical knife handle and an ultrasonic surgical instrument to solve the technical problems mentioned in the above background technology section.
[0005] In a first aspect, an embodiment of the present application provides an ultrasonic surgical knife rod, which transmits ultrasonic waves from the bottom to the top, and the top of the ultrasonic surgical knife rod corresponds to the maximum amplitude point of the ultrasonic wave; the length of the ultrasonic surgical knife rod is a preset integer multiple of half the wavelength of the ultrasonic wave, and the preset integer multiple is greater than or equal to 5 times, and less than or equal to 11 times; the cross-sectional area of the energy output end of the ultrasonic surgical knife rod gradually decreases from the bottom to the top.
[0006] In some embodiments, the cross-sectional width of the bottom of the energy output end is in the range of 1.67 mm to 4 mm, and the cross-sectional width of the top end is in the range of 1.11 mm to 1.66 mm.
[0007] In some embodiments, the length from the bottom to the top of the energy output end is less than or equal to 12 mm.
[0008] In some embodiments, a pin hole is provided on the ultrasonic surgical knife rod, and on a cross section passing through the center point of the pin hole, the height range of the pin hole is 1.2 mm-1.75 mm, and the height range of the ultrasonic surgical knife rod is 4.75 mm-10 mm.
[0009] In some embodiments, an anti-adhesion coating is disposed on the energy output end of the ultrasonic surgical blade shaft, and the anti-adhesion coating includes a polymer material.
[0010] In some embodiments, the anti-sticking coating comprises any one of the following: a copolymer of tetrafluoroethylene TFE and hexafluoropropylene HFP FEP, liquid FEP, FEP / ceramic composite, liquid FEP ceramic epoxy composite, polytetrafluoroethylene PTFE, PTFE / ceramic composite.
[0011] In some embodiments, an anti-adhesion coating is provided on the energy output end of the ultrasonic surgical knife rod, and the anti-adhesion coating is made of ceramic material.
[0012] In some embodiments, an anti-adhesion coating is provided on the energy output end of the ultrasonic surgical knife rod, and the anti-adhesion coating is metal, wherein the metal is any one of the following: aluminum, stainless steel, and molybdenum.
[0013] In a second aspect, an embodiment of the present application provides an ultrasonic surgical knife handle, wherein the ultrasonic surgical knife handle comprises an outer tube, an inner tube, a knife rod and a pin, wherein the knife rod is the ultrasonic surgical knife rod described in the first aspect above, and the outer tube and the inner tube are provided with pin holes matching the shape of the pin holes on the knife rod, and the pin passes through the pin holes on the outer tube, the inner tube and the knife rod.
[0014] In a third aspect, an embodiment of the present application provides an ultrasonic surgical instrument, which includes: an ultrasonic surgical knife main unit, an excitation switch, and the ultrasonic surgical knife handle described in the second aspect above, wherein the ultrasonic surgical knife main unit is connected to the excitation switch and the ultrasonic surgical knife handle, respectively.
[0015] The ultrasonic surgical knife bar, ultrasonic surgical knife handle and ultrasonic surgical instrument provided in the embodiment of the present application are realized by setting the top of the ultrasonic surgical knife bar to the maximum amplitude point of the ultrasonic wave, and setting the length of the ultrasonic surgical knife bar to a preset integer multiple of the half wavelength of the ultrasonic wave, and the preset integer multiple is greater than or equal to 5 times, and less than or equal to 11 times, so as to limit the length of the ultrasonic surgical knife bar. The length can make the overall mechanical strength of the knife bar greater and reduce the risk of fracture under the premise of adapting to the actual surgical scene. The top of the knife bar is set to the maximum amplitude point of the ultrasonic wave, so that the ultrasonic wave can be output with maximum energy, thereby improving the surgical effect. In addition, the cross-sectional area of the energy output end of the ultrasonic surgical knife bar gradually decreases from the bottom to the top, which can enhance the mechanical strength of the bottom, and at the same time reduce the resistance of the top, effectively avoid the fracture of the knife bar, and make the amplitude of the top larger, improve the cutting efficiency, and when the top contacts with the biological tissue, it helps to reduce lateral thermal damage, so that the surgical operator can locate the surgical position more accurately and improve the surgical accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:
[0017] Figure 1 is a structural schematic diagram of an embodiment of an ultrasonic surgical knife bar according to the present application;
[0018] Figure 2A is a schematic structural diagram of another embodiment of an ultrasonic surgical knife bar according to the present application;
[0019] Figure 2B It is a structural schematic diagram of a cross section of the pin hole position on the ultrasonic surgical knife rod according to the present application;
[0020] Figure 3 is a schematic structural diagram of an ultrasonic surgical knife handle according to the present application;
[0021] Figure 4 It is a schematic structural diagram of an embodiment of an ultrasonic surgical instrument according to the present application. DETAILED DESCRIPTION
[0022] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the relevant utility model are shown in the accompanying drawings.
[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0024] Figure 1 FIG. 1 is a schematic diagram showing a structure of an embodiment of an ultrasonic surgical knife bar 100 of the present application. Figure 1 As shown, the ultrasonic surgical knife rod transmits ultrasonic waves from the bottom end 101 to the top end 102, and the top end 102 of the ultrasonic surgical knife rod 100 corresponds to the maximum amplitude point of the ultrasonic wave; the length of the ultrasonic surgical knife rod 100 is a preset integer multiple of half the wavelength of the ultrasonic wave, and the preset integer multiple is greater than or equal to 5 times and less than or equal to 11 times.
[0025] Typically, the bottom end 101 of the ultrasonic surgical knife rod 100 is connected to an ultrasonic transducer, which provides ultrasonic energy that vibrates along the axial direction (i.e., the length direction of the knife rod). The ultrasonic energy is transmitted to the top end 102 of the knife rod, causing the top end 102 to vibrate along the axial direction, thereby cutting the biological tissue separated from it.
[0026] like Figure 1The waveform shown, where the X-axis represents the tool bar length and the Y-axis represents the amplitude, Figure 1 The length of the blade rod is 6 times of the half wavelength, and the bottom end 101 and the top end 102 of the blade rod are both the points of maximum ultrasonic amplitude. The ultrasonic wave is transmitted along the X-axis and output at the top end 102 with the maximum amplitude.
[0027] like Figure 1 As shown, the cross-sectional area of the energy output end 103 of the ultrasonic surgical knife rod 100 gradually decreases from the bottom 1031 to the top 102, so that the shape of the energy output end 103 is approximately conical, so that the amplitude at the top 102 can be larger.
[0028] The ultrasonic surgical knife bar 100 provided in the embodiment of the present application sets the top 102 of the ultrasonic surgical knife bar 100 as the maximum amplitude point of the ultrasonic wave, and sets the length of the ultrasonic surgical knife bar 100 to a preset integer multiple of the half wavelength of the ultrasonic wave, and the preset integer multiple is greater than or equal to 5 times, and less than or equal to 11 times, so as to limit the length of the ultrasonic surgical knife bar 100. The length can make the overall mechanical strength of the knife bar greater under the premise of adapting to the actual surgical scene, and reduce the risk of fracture. And the top 102 of the knife bar is set as the maximum amplitude point of the ultrasonic wave, so that the ultrasonic wave can be output with maximum energy, and the surgical effect is improved. In addition, the cross-sectional area of the energy output end 103 of the ultrasonic surgical knife bar 100 gradually decreases from the bottom 1031 to the top 102, which can enhance the mechanical strength of the bottom 1031, and at the same time reduce the resistance of the top 102, effectively avoid the fracture of the knife bar, and make the amplitude of the top 102 larger, improve the cutting efficiency, and when the top 102 contacts with the biological tissue, it helps to reduce lateral thermal damage, so that the surgical operator can locate the surgical position more accurately, and improve the surgical accuracy.
[0029] In some optional implementations of this embodiment, the cross-sectional width of the bottom 1031 of the energy output end 103 ranges from 1.67 mm to 4 mm, and the cross-sectional width of the top 102 ranges from 1.11 mm to 1.66 mm.
[0030] like Figure 2A As shown, A2 is the cross-sectional width of the bottom 1031 of the energy output end 103 , and A3 is the cross-sectional width of the top 102 .
[0031] It should be noted that Figure 2A The A2 and A3 shown can be the maximum width of the corresponding cross section, or can be the minimum width, average width, etc., and can be set according to the actual shape of the cross section.
[0032] This embodiment limits the cross-sectional width of the bottom and top of the energy output end to a certain range, thereby making the overall strength of the energy output end of the knife rod greater, and effectively preventing breakage during surgery.
[0033] In some optional implementations of this embodiment, the length from the bottom 1031 to the top 102 of the energy output end 103 is less than or equal to 12 mm.
[0034] like Figure 2A As shown, A1 is the length from the bottom 1031 to the top 102 of the energy output end 103. In actual application scenarios, the longer the length of the energy output end 103, the higher the risk of fracture. When the length of the energy output end 103 is greater than 12 mm, the energy output end 103 is subjected to a large torque, resulting in a greater risk of fracture.
[0035] In this embodiment, by limiting the length of the energy output end 103 , the energy output end 103 can have greater mechanical strength, be less prone to breakage, and be more adaptable to surgical scenarios.
[0036] In some optional implementations of this embodiment, such as Figure 2B As shown, a pin hole is provided on the ultrasonic surgical knife rod 100, and a cross section passing through the center point of the pin hole (i.e. Figure 2A In the cross section at the CC position shown in FIG. 1 , the height of the pin hole ranges from 1.2 mm to 1.75 mm, and the height of the ultrasonic surgical knife rod 100 ranges from 4.75 mm to 10 mm.
[0037] Among them, the above-mentioned center point can be the geometric center point of the shape of the pin hole. For example, if the shape of the pin hole is circular, the center point can be the center of the circle. If the shape of the pin hole is rectangular, the center point can be the intersection of the diagonals of the rectangle.
[0038] like Figure 2B As shown, assuming that the shape of the pin hole is circular, on the cross section CC, the height of the pin hole is L1 (ie, the diameter of the circle), and the height of the ultrasonic surgical knife rod 100 is L2, then the range of L1 is 1.2mm-1.75mm, and the range of L2 is 4.75mm-10mm.
[0039] In this embodiment, the cross-section of the ultrasonic surgical knife rod 100 may be in any shape, such as a circle, a rectangle, a polygon, etc.
[0040] like Figure 1In the waveform shown, the point where the amplitude Y is 0 is called a node. In actual surgical scenarios, the knife bar needs higher strength near the node closest to the top 102, and also needs higher strength near the node closest to the bottom 101. The position of the above-mentioned pin hole is close to the first node. Therefore, in order to make the mechanical strength of the pin hole position greater, the pin hole height and the knife bar height on the cross section where the pin hole is located are limited, so that the cross-sectional area of the knife bar material at the pin hole position is larger, thereby improving the mechanical strength of the knife bar and ensuring the life of the knife bar.
[0041] In some optional implementations of this embodiment, an anti-adhesion coating is provided on the energy output end 103 of the ultrasonic surgical knife shaft 100, and the anti-adhesion coating includes a polymer material. The cost of the polymer material is relatively low, which can reduce the manufacturing cost of the ultrasonic surgical knife shaft 100.
[0042] In some optional implementations of this embodiment, when the anti-sticking coating includes a polymer material, the material of the anti-sticking coating includes any one of the following: a copolymer of tetrafluoroethylene TFE and hexafluoropropylene HFP FEP, liquid FEP, FEP / ceramic composite, liquid FEP ceramic epoxy composite, polytetrafluoroethylene PTFE, PTFE / ceramic composite.
[0043] In some optional implementations of this embodiment, an anti-adhesion coating is provided on the energy output end 103 of the ultrasonic surgical knife rod 100, and the anti-adhesion coating is a ceramic material. The ceramic material includes at least one of the following: chromium carbide, tungsten carbide, titanium nitride, aluminum oxide, and chromium nitride. The ceramic material has a large mechanical strength and is not easy to be damaged, which can increase the service life of the ultrasonic surgical knife rod 100.
[0044] In some optional implementations of this embodiment, an anti-adhesive coating is provided on the energy output end 103 of the ultrasonic surgical knife bar 100, and the anti-adhesive coating is made of metal, wherein the metal is any one of the following: aluminum, stainless steel, and molybdenum. Since metal has high mechanical strength and strong ductility, the anti-adhesive coating made of metal material can improve the toughness of the anti-adhesive coating, reduce the probability of damage, and increase the service life of the knife bar.
[0045] Further references Figure 3 , which shows a schematic structural diagram of an embodiment of an ultrasonic surgical knife handle 300 of the present application. The ultrasonic surgical knife handle includes a knife rod 301, a pin 302, an outer tube 303, and an inner tube 304. The knife rod 301 is the ultrasonic surgical knife rod described in the above embodiment.
[0046] In this embodiment, pin holes matching the shape of the pin holes on the knife rod 301 are provided on the outer tube 303 and the inner tube 304 , and the pins pass through the pin holes on the outer tube 303 , the inner tube 304 and the knife rod 301 .
[0047] Usually, the pin holes on the outer tube 303 and the inner tube 304 can have the same shape as the pin holes on the knife bar 301. After the pins 302 are inserted into the pin holes, the outer tube 303, the inner tube 304 and the knife bar 301 can be driven to rotate by the pins 302. By providing the pin holes on the outer tube and the inner tube of the ultrasonic surgical knife handle, the outer tube 303, the inner tube 304 and the knife bar 301 can be driven to rotate synchronously by the pins, so that the knife bar can be isolated from the outside world by the outer tube and the inner tube to avoid contamination and contact of the knife bar by the outside world.
[0048] The ultrasonic surgical knife handle provided in the above embodiment of the present application is used as follows Figure 1 The ultrasonic surgical knife bar described in the corresponding embodiment can output ultrasound at maximum energy, improve the surgical effect, and make the overall mechanical strength of the knife bar greater, reducing the risk of breakage.
[0049] Further references Figure 4 , which shows a schematic diagram of the structure of an embodiment of an ultrasonic surgical instrument 400 of the present application. The ultrasonic surgical instrument 400 includes: an ultrasonic surgical knife host 401, an excitation switch 402 and the above-mentioned Figure 3 The ultrasonic scalpel handle 403 described in the corresponding embodiment. The ultrasonic scalpel host 401 is connected to the excitation switch 402 and the ultrasonic scalpel handle 403 respectively. The ultrasonic scalpel host can perform functional configuration (such as setting output energy, etc.) on the ultrasonic scalpel handle 403. The ultrasonic scalpel excitation switch can include but is not limited to at least one of the following: a foot switch, a manual switch, etc.
[0050] The ultrasonic surgical instrument provided in the above-mentioned embodiment of the present application, by introducing Figure 3 The ultrasonic surgical knife handle described in the illustrated embodiment can enable ultrasonic waves to output at maximum energy, thereby improving surgical effects, and making the overall mechanical strength of the knife rod greater, thereby reducing the risk of breakage.
[0051] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above utility model concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.
Claims
1. An ultrasonic surgical knife bar, characterized in that: The ultrasonic surgical knife rod transmits ultrasonic waves from the bottom end to the top end, and the top end of the ultrasonic surgical knife rod corresponds to the maximum amplitude point of the ultrasonic wave; the length of the ultrasonic surgical knife rod is a preset integer multiple of a half wavelength of the ultrasonic wave, and the preset integer multiple is greater than or equal to 5 times and less than or equal to 11 times; The cross-sectional area of the energy output end of the ultrasonic surgical knife rod gradually decreases from the bottom to the top.
2. The ultrasonic surgical knife bar according to claim 1, characterized in that: The cross-sectional width of the bottom of the energy output end is in the range of 1.67 mm to 4 mm, and the cross-sectional width of the top end is in the range of 1.11 mm to 1.66 mm.
3. The ultrasonic surgical knife bar according to claim 2, characterized in that: The length from the bottom of the energy output end to the top is less than or equal to 12 mm.
4. The ultrasonic surgical knife bar according to claim 1, characterized in that: The ultrasonic surgical knife rod is provided with a pin hole. On a cross section passing through the center point of the pin hole, the height range of the pin hole is 1.2 mm-1.75 mm, and the height range of the ultrasonic surgical knife rod is 4.75 mm-10 mm.
5. The ultrasonic surgical knife bar according to any one of claims 1 to 4, characterized in that: An anti-adhesion coating is provided on the energy output end of the ultrasonic surgical knife rod, and the anti-adhesion coating includes a polymer material.
6. The ultrasonic surgical knife bar according to claim 5, characterized in that: The anti-sticking coating includes any one of the following: a copolymer of tetrafluoroethylene TFE and hexafluoropropylene HFP FEP, liquid FEP, FEP / ceramic composite, liquid FEP ceramic epoxy composite, polytetrafluoroethylene PTFE, PTFE / ceramic composite.
7. The ultrasonic surgical knife bar according to any one of claims 1 to 4, characterized in that: An anti-adhesion coating is arranged on the energy output end of the ultrasonic surgical knife rod, and the anti-adhesion coating is made of ceramic material.
8. The ultrasonic surgical knife bar according to any one of claims 1 to 4, characterized in that: An anti-adhesion coating is provided on the energy output end of the ultrasonic surgical knife rod, and the anti-adhesion coating is metal, wherein the metal is any one of the following: aluminum, stainless steel, and molybdenum.
9. An ultrasonic surgical knife handle, characterized in that: The ultrasonic surgical knife handle comprises an outer tube, an inner tube, a knife rod and a pin, wherein the knife rod is the ultrasonic surgical knife rod as described in any one of claims 1-8, the outer tube and the inner tube are provided with pin holes matching the shape of the pin holes on the knife rod, and the pin passes through the pin holes on the outer tube, the inner tube and the knife rod.
10. An ultrasonic surgical instrument, characterized in that: The ultrasonic surgical instrument comprises: an ultrasonic surgical knife main unit, an excitation switch and the ultrasonic surgical knife handle as claimed in claim 9, wherein the ultrasonic surgical knife main unit is connected to the excitation switch and the ultrasonic surgical knife handle respectively.