CN113662628A - Cutter head device with energy gathering characteristic and ultrasonic surgical instrument - Google Patents
Cutter head device with energy gathering characteristic and ultrasonic surgical instrument Download PDFInfo
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- 230000001225 therapeutic effect Effects 0.000 claims abstract description 34
- 238000010337 ultrasonic energy treatment Methods 0.000 claims abstract description 17
- 238000005452 bending Methods 0.000 claims description 10
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- 230000003321 amplification Effects 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
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- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000023555 blood coagulation Effects 0.000 abstract description 2
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- 238000010586 diagram Methods 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
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- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B2017/320069—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic for ablating tissue
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B2017/320072—Working tips with special features, e.g. extending parts
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B2017/320082—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic for incising tissue
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Abstract
The invention discloses a cutter head device with energy gathering characteristics and an ultrasonic surgical instrument, wherein the cutter head device comprises: an ultrasonic energy treatment end, a shaft assembly, a proximal interface; the cutter head unit comprises a treatment elbow characteristic part which is arranged at the far end of the cutter head unit and deviates from the standard axis by a preset angle, and an elbow dynamic balance characteristic part which is arranged at the near end of the cutter head unit and distributed on different sides of the standard axis with the treatment elbow characteristic part. The invention has the beneficial effects that: the control of the influence factors of the characteristic part of the treatment elbow in the cutter head unit on the clutter amplitude improves the stress concentration of the characteristic part of the treatment elbow, and reduces the energy loss rate of the cutter head unit; the elbow dynamic balance characteristic part arranged in the cutter head unit improves the dynamic balance state of the cutter head unit relative to the therapeutic elbow characteristic part, reduces clutter amplitude of the cutter head unit and avoids acoustic damage of the cutter head unit; the pressure matching characteristic surface and the negative angle feedback characteristic part optimize the pressure distribution of the unit tissue of the cutter head, and improve the cutting and blood coagulation effects.
Description
Technical Field
The invention relates to the technical field of ultrasonic surgical instruments, in particular to a cutter head device with energy gathering characteristics and an ultrasonic surgical instrument.
Background
Currently, a surgical instrument including an ultrasonic therapy energy end blade unit is widely applied to clinical surgical therapy, and generally comprises an ultrasonic blade generator, a surgical blade including one or more piezoelectric ceramic unit transducers and cables, and a surgical blade with a manual switch, wherein the manual switch on the surgical blade is activated to enable the ultrasonic surgical instrument to work, a host outputs a high-frequency resonance electric signal to the transducers, the transducers convert the high-frequency vibration signal into high-frequency mechanical vibration, the high-frequency mechanical vibration is amplified through an acoustic waveguide rod and transmitted to the blade unit on the surgical blade, and the high-frequency mechanical vibration of the blade unit acts on human tissues to gasify water in tissue cells, break protein hydrogen bonds, disintegrate cells, cut or coagulate the tissues, thereby achieving the purposes of cutting and suturing the tissues. The cutting and coagulation effects are ensured by the coordination between the physician's level of skill and power of operation, the angle of the blade, tissue traction, blade pressure, etc.
Some of the existing cutter head units are in the shape of an elbow structure for increasing the operation visual field, and some of the existing cutter head units are in an efficient specific shape for increasing a balance structure, or are compatible with a composite shape of the two structures.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a cutter head device with energy gathering characteristics and an ultrasonic surgical instrument.
The technical scheme of the invention is as follows:
in a first aspect, the present invention provides a tool bit assembly with energy concentrating features, comprising:
the ultrasonic energy treatment end comprises a cutter head unit and a power amplification unit;
a shaft assembly comprising a waveguide matingly coupled to the ultrasonic energy treatment end; ultrasonic high-frequency vibration is transmitted to the cutter head unit through the waveguide on a standard axis determined by the axis of the shaft rod assembly;
the near-end interface comprises an external interface and an internal interface; the external interfaces are distributed on the proximal interface in parallel along the standard axis; the internal interface is angularly distributed on the proximal interface from the standard axis;
the cutter head unit comprises a treatment elbow characteristic part, an elbow dynamic balance characteristic part, a pressure matching characteristic surface and a negative angle feedback characteristic part, wherein the treatment elbow characteristic part is arranged at the far end of the cutter head unit and deviates from the standard axis by a preset angle, the elbow dynamic balance characteristic part is arranged at the near end of the cutter head unit and is distributed on the different sides of the standard axis with the treatment elbow characteristic part, the pressure matching characteristic surface is arranged on the upper side of the cutter head unit and is distributed along the bending central axis determined by the treatment elbow characteristic part, and the negative angle feedback characteristic part is formed by offsetting the pressure matching characteristic surface relative to the standard axis at the lateral end of the cutter head unit.
The elbow dynamic balance feature deviates from the treatment elbow feature and is used for adjusting the dynamic balance of the cutter head unit, the cutter head unit comprises a plurality of continuous surfaces extending from the power amplifier unit to the far end of the cutter head unit, the continuous surfaces comprise the pressure matching feature surfaces which are positioned on the upper side of the cutter head unit and provide pressure support for tissue clamping, and the width of the pressure matching feature surfaces gradually changes from the near end of the cutter head unit to the far end of the cutter head unit along the bending central axis; the distal ends of the pressure matching features provide a non-parallel bias of a tissue clamp pressure support direction to the pressure matching features relative to the standard axis forming negative angle feedback features.
Preferably, the elbow dynamic balance feature is used for adjusting dynamic balance of the tool bit unit in horizontal and vertical directions perpendicular to the standard axis, so that the condition that the tool bit unit meets the dynamic balance is that the product of the mass center mass of the elbow dynamic balance feature and the distance of the mass center mass of the tool bit unit without the elbow dynamic balance feature deviating from the standard axis is equal;
preferably, the therapeutic bend feature forms an angle with the standard axis of no greater than 21.5 degrees;
preferably, the elbow dynamic balance feature is offset from a regular outer surface at the proximal end of the cutter head unit; the elbow dynamic balance characteristic part is decomposed into a plurality of dynamic balance adjusting units, and the elbow dynamic balance adjusting units are distributed on the same side of the axial standard axis.
Preferably, the pressure matching feature surface is tapered with respect to the curved central axis in an approximately isosceles trapezoid shape, and a dimension of the pressure matching feature surface near the distal end of the cutter head unit is smaller than a dimension of the pressure matching feature near the proximal end of the cutter head unit.
Preferably, the negative angle compensation feature part is provided with a compensation pressure surface, a projection passing through the axial standard axis and perpendicular to the plane of the pressure matching feature surface is a single 3-order smooth nonlinear line, and the single 3-order smooth nonlinear line is not parallel offset to the axial standard axis.
Preferably, the therapeutic bend feature is a polygon having more than 5 sides in a cross-section perpendicular to the central axis of curvature.
Preferably, the therapeutic bend feature comprises, in a cross-section perpendicular to the central axis of bending:
a pressure-matching feature-surface projection line, the length of the matching feature-surface projection line at different locations across a cross-section perpendicular to the central axis of curvature decreasing from a proximal end of a treatment elbow feature to a distal end of the treatment elbow feature, the distance of the intersection center point of the pressure-matching feature-surface projection line and the central axis of curvature across a cross-section perpendicular to the central axis of curvature increasing from the proximal end of the treatment elbow feature to the distal end of the treatment elbow feature.
In a second aspect, the present invention provides an ultrasonic surgical instrument comprising:
an ultrasonic blade generator, one or more piezoelectric ceramic element transducers, a clamping mechanism, a support body, and a blade device of the first aspect.
The clamping mechanism cooperates with the blade device of the first aspect to provide tissue gripping force; the support body supports and mounts the bit device of the first aspect.
As described above, the tool bar device with energy gathering characteristics of the present invention has the following beneficial effects: the control of the influence factors of the characteristic part of the treatment elbow in the cutter head unit on the clutter amplitude improves the stress concentration of the characteristic part of the treatment elbow, and reduces the energy loss rate of the cutter head unit; the elbow dynamic balance characteristic part arranged in the tool bit unit improves the dynamic balance state of the tool bit unit relative to the characteristic part of the therapeutic elbow, reduces clutter amplitude of the tool bit unit and avoids acoustic damage of the tool bit unit; the pressure matching characteristic surface and the negative angle compensation characteristic part arranged in the cutter head unit optimize the tissue pressure distribution of the cutter head unit and improve the cutting and blood coagulation effects.
Drawings
FIG. 1A depicts a schematic view of a tool tip arrangement with energy concentrating features;
FIG. 1B depicts a schematic view of an ultrasonic energy treatment tip in the blade apparatus of FIG. 1;
FIG. 2 depicts a schematic view of a cut-away of the ultrasonic energy treatment tip along a standard axis;
FIG. 3A depicts a schematic top view of a standard axis of a tip unit and a central axis of curvature in an ultrasonic energy treatment tip and an offset from the standard axis of a bend treatment feature in the tip unit;
FIG. 3B depicts a schematic top view, similar to FIG. 3A, of a prior art bit device;
FIG. 4A depicts a schematic of the high frequency vibratory axial displacement (Z-axis) profile of the blade unit in the ultrasonic energy treatment tip and the node of the maximum high frequency vibratory axial displacement (Z-axis) in the blade unit in the ultrasonic energy treatment tip;
FIG. 4B depicts an axial displacement (Z-axis) schematic view similar to FIG. 4A of a prior art tool tip device;
FIG. 4C depicts a schematic view of the HF vibration and resultant displacement distribution of the blade unit in the ultrasonic energy treatment tip;
FIG. 4D depicts a resultant displacement schematic of a prior art bit device similar to FIG. 4C;
FIG. 5A depicts a partial schematic view of a pressure matching feature in a head unit;
FIG. 5B depicts a schematic of the overall construction of the bit device;
FIG. 5C depicts the configuration of the bit unit and the clamping mechanism and the pressure matching features in the bit unitTissue pressure load concentration curve q without negative angle feedback feature on surface2(x) A schematic diagram of (a);
FIG. 5D depicts a schematic side view of the bit unit in use with a clamping mechanism;
FIG. 5E depicts another schematic side view of the bit unit of FIG. 5D in use with a clamping mechanism;
FIG. 6 depicts a tissue pressure load concentration curve q in a cutter head unit without negative angle feedback features on the pressure matching features2(x) Tissue pressure load concentration curve q on a pressure matching feature plane including negative angle feedback features in a tool tip unit3(x) And of prior art bit arrangements like q2(x) Tissue pressure load concentration curve q1(x) An illustration diagram;
FIG. 7A depicts a schematic view of a negative angle feedback feature in a head unit formed by a pressure matching feature in a front view of the head unit;
FIG. 7B depicts a curve q of a gripping reaction force added to body tissue by deformation of a negative angle feedback feature of a cutting head unit11D(x) A schematic diagram;
FIG. 8 depicts a schematic view of the distal end of the bit unit;
FIG. 9 depicts a top view of another embodiment of an elbow dynamic balancing feature in a head unit;
FIG. 10 depicts a top view of yet another embodiment of an elbow dynamic balancing feature in a head unit;
FIG. 11A depicts a schematic of a pressure matching feature in a tip unit tapering as a high-order hyperbola;
FIG. 11B depicts the tissue pressure load concentration curve q on the pressure matching feature of the high-order hyperbola in FIG. 11A4(x) Similar to q for prior art bit devices4(x) Tissue pressure load concentration curve q1(x) A schematic diagram;
FIG. 12 depicts a top view of yet another embodiment of a bit device;
FIG. 13 depicts a top view of yet another embodiment of a bit device;
FIG. 14 depicts a side view of yet another embodiment of a bit device;
fig. 15 depicts a side view of yet another embodiment of a bit device.
Detailed Description
The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for the convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered as limiting.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected through the inside of two members. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in fig. 1A, the present invention provides a tip assembly comprising a concentrating feature, the tip assembly comprising: an ultrasonic energy treatment end 1, a shaft rod component 2 and a near end interface 3;
the ultrasonic energy treatment end 1 comprises a high-frequency vibration cutter head unit 11 and a power amplifier unit 12;
the shaft assembly 2 defines a standard axis 21, the shaft assembly 2 comprising a waveguide 22; the ultrasonic high-frequency vibration is transmitted to the bit unit 11 along the waveguide 22 on the standard axis 21. The wave guide pipe 22 in the shaft rod component 2 is matched and connected with the cutter head unit 11;
the proximal port 3 comprises an external port 31 distributed along the standard axis 21; the proximal interface 3 is connected to the support body 4 at an angle to the standard axis 21 by the internal interface 32, as shown in fig. 5B;
the head unit 11 includes: a therapeutic elbow feature 11A, an elbow dynamic balance feature 11B, a pressure matching feature 11C, a negative angle feedback feature 11D, as shown in fig. 1B;
the therapeutic bend feature 11A defines a central bending axis 11A1, the therapeutic bend feature 11A being disposed at a distal end of the cutting head unit 11;
the elbow dynamic balance characteristic part 11B deviates from the therapeutic elbow characteristic part 11A, and the elbow dynamic balance characteristic part 11B and the therapeutic elbow characteristic part 11A are distributed on different sides of the standard axis 21;
the pressure matching feature surfaces 11C are distributed on the head unit 11 along the curved central axis 11a1, the pressure matching feature surfaces 11C being tapered in profile along the curved central axis 11a 1;
a negative angle feedback feature 11D is placed at the distal end of the cutter head unit 11, the negative angle compensation feature 11D being offset with respect to the axis 21.
The therapeutic elbow characteristic part 11A deviating from the standard axis 21 in the cutter head unit 11 will destroy the dynamic balance of the cutter head unit 11, which causes the aggravation of energy loss and the shortening of service life in the high-frequency vibration cutter head unit 11, and in order to avoid the defect, the cutter head unit 11 is provided with an elbow dynamic balance characteristic part 11B; the bend dynamic balance feature 11B adjusts the dynamic balance of the tool bit unit 11 in the X-axis and Y-axis directions with respect to the Z-axis. The condition for satisfying dynamic balance is the equality of the product of the mass of the center of mass of the elbow dynamic balance feature 11B and the distance of the mass of the center of mass of the head unit 11 without 11B from the standard axis 21, as shown in fig. 2.
The dynamic balance state in the Y-axis direction of the prior art bit unit 11' shown in fig. 3A is shown in table 1; as shown in fig. 3B, the elbow dynamic balance feature part 11B is set as the mass on the upper and outer circumferential surfaces of the cutter head unit 11, and the dynamic balance states on the Y axis and the X axis of the cutter head unit 11 are shown in table 1:
as can be seen from table 1, the deviations of the X-axis dynamic balance of the cutter head unit 11 from the cutter head unit 11' are 8.6544 and 11.8559, respectively, and the differences are not large, the deviations of the Z-axis dynamic balance of the cutter head unit 11 from the cutter head unit 11' are 16.1936 and 60.1671, respectively, and the differences are large, and the deviations of the overall cutter head unit 11 from the cutter head unit 11' are 3.7026 and 13.7954, respectively.
The shape of the therapeutic elbow feature 11A in fig. 3A that increases the surgical field is offset from the standard axis 21 and extends distally toward the standard axis 21, with the therapeutic elbow feature 11A forming an angle R (11A) with the standard axis 21, and fig. 4 showing that the greater the angle R (11A) between the therapeutic elbow feature 11A and the standard axis 21, the greater the ratio of the lateral displacement (Y-direction) to the axial displacement (Z-direction) of the therapeutic elbow feature 11A. The lateral displacement (Y direction) of the therapeutic bend feature 11A needs to be limited to a range of values in a certain interval in consideration of the acoustic material of the head unit 11, the energy heating loss rate, and the service life of the head unit 11.
Table 2 and fig. 3B, 4A, 4B, 4C, 4D illustrate that it is reasonable to control the angle R (11A) formed by the therapeutic bend feature 11A and the standard axis 21 to within 21.5, and the ratio of the lateral displacement (Y-direction) to the axial displacement (Z-direction) of the therapeutic bend feature 11A to within 6%.
The results of the bit cell 11' and the bit cell 11 simulations are shown in table 2:
| MODEL | NODE | UX | UY | UZ | USUM | ∣UY/UZ∣ |
| 11' | 12613 | -0.42595 | 3.3603 | 36.543 | 36.700 | 9.03％ |
| 11 | 44335 | -2.6098 | -1.4723 | 26.729 | 26.897 | 5.60％ |
the profile of the pressure matching feature surface 11C on the head unit 11 is tapered along the curved central axis 11A to approximate an isosceles trapezoid, as shown in fig. 5A. The pressure matching feature 11C 'is changed to the pressure matching feature 11C under the condition that the bending center axis 11A1' is changed in bending to the bending center axis 11A. Applying tissue clamping force to the therapeutic bend feature 11A supporting human tissue by the clamping mechanism 5, as shown in fig. 5B and 5C, the pressure load concentration on the pressure matching feature 11C is:
wherein the isosceles trapezoid shape of the pressure matching feature plane 11C on the tool bit unit 11 can be described by the equation:
fs2(x)＝a2-b2x
the approximate load on the cantilever beam is:
the shearing force of the tissue on the cutter head unit 11 is the length X of the characteristic part 11A of the therapeutic elbow of a pressure load concentration curve and an X axis0The interval integral area.
As shown in fig. 5D, the pressure load concentration on the bit cell 11' of fig. 5E is:
as shown in FIG. 6, the bit unit 11 is in the interval [0, X ]0]The load of the upper cantilever beam is larger than that of the cantilever beam on the cutter head unit 11', so that the energy required by the load for cutting the human tissue is less, and the speed for cutting the human tissue is higher.
The negative angle feedback feature 11D of the tool bit unit 11 is a smooth curved surface, as shown in fig. 7A, the projection of the negative angle feedback feature 11D on a plane passing through the standard axis 21 and perpendicular to the direction of the pressure matching feature 11C is a single smooth line 11D2, a horizontal line 11D1 extending from the regular outer peripheral edge of the power amplifier unit 12 and parallel to the standard axis 21, the single smooth line 11D2 deviates from the non-parallel standard axis 21, the single smooth line 11D2 extends in a direction opposite to the direction of the tissue clamping force applied by the clamping mechanism 5 to the therapeutic elbow feature 11A supporting the tissue of the human body, the application of the tissue clamping force by the clamping mechanism 5 to the therapeutic elbow feature 11A forces the single smooth line 11D2 to bend to the near side of the standard axis 21, and in such a situation, the tool bit unit 11 increases the clamping reaction force q to the tissue of the human body11D(x) The cantilever beam load on the head unit 11 is increased. As shown in fig. 7B.
The relation between the upper deflection of the cantilever beam and the load concentration is as follows:
the single smooth line 11D2 is set to a 3 rd order high order curve, and the pressure load concentration on the bit unit 11 provided with the negative angle feedback feature 11D is:
as shown in FIG. 6, the pressure load concentration q3(X) on the blade unit 11 with the negative angle feedback feature 11D and the length X of the X-axis at the treatment bend feature 11A0Interval integral area ratio q2(x)、q1(x) Has a larger integral area, and the cutter head unit 11 provided with the negative angle feedback feature 11D has a higher speed of cutting human tissue than the cutter head unit 11'.
In fig. 8, the therapeutic bend feature 11A is a redundant 5-sided polygon in a cross-section 11A2 perpendicular to the central axis of curvature 11A 1;
the therapeutic bend feature 11A comprises, at a cross-section 11A2 perpendicular to the central axis of curvature 11A 1:
a pressure-matching feature projection line 11C1, a length a of a cross-section 11A2 of the pressure-matching feature projection line 11C1 at various locations perpendicular to the central axis of curvature 11A1 decreasing from a proximal end of the therapeutic elbow feature 11A to a distal end of the therapeutic elbow feature 11A, a distance b of a center point of intersection of the pressure-matching feature projection line 11C1 with the central axis of curvature 11A1 at the cross-section 11A2 perpendicular to the central axis of curvature 11A1 increasing from the proximal end of the therapeutic elbow feature 11A to the distal end of the therapeutic elbow feature 11A.
In summary, the present invention improves the 3-dimensional dynamic balance state of the tool bit unit 11 relative to the therapeutic elbow feature 11A by the elbow dynamic balance feature 11B provided in the tool bit unit 11 and improves the stress concentration of the therapeutic elbow feature 11A by controlling the effect factors of the therapeutic elbow feature 11A in the tool bit unit 11, thereby reducing the amplitude of clutter in each direction of the tool bit unit 11, increasing the focusing of ultrasonic energy, and avoiding the acoustic damage of the tool bit unit 11; the pressure matching feature surface 11C and the negative angle feedback feature portion 11D arranged in the cutter head unit 11 optimize the tissue pressure distribution of the cutter head unit 11 and improve the cutting and coagulation effects.
Example 2:
as shown in fig. 9, the knee dynamic balance feature a11B of the cutter head unit a11 is a cross combination of two discontinuous connection structures of dynamic balance adjustment units a11B1 and a11B 2. Under the condition that the cutter head unit a11 and the power amplifier unit a12 are matched in size and smoothly transited, the pressure is matched with the characteristic surface shape definition, and the dynamic balance mass is adjusted, the dynamic balance adjusting units a11B1 and a11B2 are arranged to adjust the respective mass and shape in a matched mode, and the transition connection between the dynamic balance adjusting units a11B1 and a11B2 is not considered.
Example 3:
as shown in fig. 10, the bend dynamic balance feature B11B of the cutter head unit B11 is a connection combination section in which multiple smooth curved sections of the dynamic balance adjustment units B11B1, B11B2, B11B2 are connected. Compared with the dynamic balance adjusting units a11B1 and a11B2 provided in embodiment 2, the tool bit unit B11 provided with the dynamic balance adjusting units B11B1, B11B2 and B11B2 has a multi-stage smooth curve, and in addition to satisfying the functions of the dynamic balance adjusting units a11B1 and a11B2 provided in embodiment 2, the smooth transition connection before the dynamic balance adjusting units B11B1, B11B2 and B11B2 is considered, so that the stress concentration caused by the bent dynamic balance feature portion a11B in the tool bit unit a11 in embodiment 2 is completely reduced.
Example 4:
as shown in fig. 11A, the pressure matching feature C11C profile is tapered with respect to the curved central axis C11A1 by a high order hyperbolic curve C11C1, the high order dual expression being:
load concentration curve q on pressure matching feature plane c11C4(x) It may be that as shown in FIG. 11B, the cutter head unit c11 pressure matching feature c11C is in the interval [0, X0]The upper cantilever beam load is increased, and the cantilever beam load on the cutter head unit c11 pressure matching characteristic surface c11C is in the interval [0, X0]The upper integral area is greatly increased compared with the integral area on the cutter head unit 11', the energy supplemented by the load required by cutting the human tissue is greatly reduced, and the speed of cutting the human tissue is greatly improved.
Example 5:
as shown in fig. 12, the pressure matching feature d11C profile in the bit unit d11 tapers in a triangle d11C1 with respect to the curved center axis d11a 1. The width of the pressure matching feature d11, which tapers in a triangle d11C1, decreases more quickly from the proximal end of the blade unit d11 to the distal end of the blade unit d11 than the width of the pressure matching feature 11C, which tapers in an isosceles trapezoid, decreases from the proximal end of the blade unit 11 to the distal end of the blade unit 11, the load concentration aq on the pressure matching feature d11C3(x) Degree of load q on bit unit d11 from proximal end of bit unit d11 to pressure matching feature 11C3(x) The bit unit d11 has a higher speed of cutting human tissue than the bit unit 11, more increasing from the proximal end of the bit unit d11 to the bit unit d 11.
Example 6:
as shown in fig. 13, the pressure matching feature plane e11C in the head unit e11 may be contoured to a shape of a connection of a triangle e11C1 with respect to the curved center axis e11a1 and a straight line segment e11C2 coaxial with the curved center axis e11a 1. The width of pressure-matching feature e11C, which tapers in triangle e11C1 and straight line segment e11C2 coaxial with curved central axis e11a1, decreases more rapidly from the proximal end of blade unit e11 to the distal end of blade unit e11 than the similar width of pressure-matching feature d11, which tapers in triangle d11C1 in example 5, the load concentration on straight line segment e11C2 in pressure-matching feature e11C reaches infinity relative to an ideal no-width straight line, and blade unit e11 has a higher cutting rate of human tissue than blade unit d11 in example 5.
Example 7:
as shown in fig. 14, the surface of the pressure matching feature surface h11C in the cutter head unit h11 may be provided with a tapered groove h11E angled with respect to the central axis of curvature h11a 1. The inclined groove h11E in the pressure matching characteristic surface h11C can improve the clamping reliability of human tissues, avoid the separation of the human tissues from the far end of the cutter head unit h11 and improve the cutting effectiveness of the human tissues; the inclined groove h11E in the pressure matching feature surface h11C can increase the transverse bending strength (Y axis) of the cutter head unit h11, reduce the transverse energy loss (Y axis) of the cutter head unit h11 and prolong the service life of the cutter head unit h 11.
Example 8:
as shown in fig. 15, the power amplifier unit k12 in the ultrasonic energy treatment end k1 may be provided with a 3-dimensional energy-concentrating rotary coupling part k 12A. The 3-dimensional energy-gathering rotary coupling part K12A in the ultrasonic energy treatment end K1 can convert the high-frequency longitudinal vibration transmitted from the attack and defense unit K12 along the standard axis K21 into the torsional vibration along the standard axis, and the torsional vibration is superposed with the high-frequency longitudinal vibration of the cutter head unit K11 in the ultrasonic energy treatment end K1 along the standard axis K21 to increase the energy effect of the ultrasonic energy treatment end K1 on human tissues and improve the cutting and coagulation effects.
The present invention has been described in detail with reference to the examples, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. It will be apparent to those skilled in the art that other variations and modifications can be made on the basis of the above description. And are not intended to be exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (16)
1. A bit assembly with energy concentrating features, comprising:
the ultrasonic energy treatment end comprises a cutter head unit and a power amplification unit;
a shaft assembly comprising a waveguide matingly coupled to the ultrasonic energy treatment end; ultrasonic high-frequency vibration is transmitted to the cutter head unit through the waveguide on a standard axis determined by the axis of the shaft assembly;
the near-end interface comprises an external interface and an internal interface; the external interfaces are distributed on the near-end interface in parallel along the standard axis; the internal interface is distributed on the proximal interface at an angle to the standard axis;
the cutter head unit comprises a treatment elbow characteristic part which is arranged at the far end of the cutter head unit and deviates from the standard axis by a preset angle, an elbow dynamic balance characteristic part which is arranged at the near end of the cutter head unit and is distributed on different sides of the standard axis with the treatment elbow characteristic part, a pressure matching characteristic surface which is arranged on the upper side of the cutter head unit and is distributed along a bending central axis determined by the treatment elbow characteristic part, and a negative angle feedback characteristic part which is formed by offsetting the pressure matching characteristic surface relative to the standard axis at the lateral end of the cutter head unit;
the elbow dynamic balance feature part deviates from the treatment elbow feature part and is used for adjusting the dynamic balance of the cutter head unit, the cutter head unit comprises a plurality of continuous surfaces extending from the power amplifier unit to the far end of the cutter head unit, the continuous surfaces comprise the pressure matching feature surfaces which are positioned on the upper side of the cutter head unit and provide pressure support for tissue clamps, and the width of the pressure matching feature surfaces gradually changes from the near end of the cutter head unit to the far end of the cutter head unit along the central bending axis; the distal ends of the pressure matching features provide a non-parallel bias of a tissue clamp pressure support direction to the pressure matching features relative to the standard axis forming negative angle feedback features.
2. The energy concentrating feature bit assembly of claim 1 wherein: the elbow dynamic balance characteristic part is used for adjusting dynamic balance of the tool bit unit perpendicular to the horizontal direction and the vertical direction of the standard axis, so that the tool bit unit meets the dynamic balance condition that the product of the mass center mass of the elbow dynamic balance characteristic part and the distance of the mass center mass of the tool bit unit without the elbow dynamic balance characteristic part deviating from the standard axis is equal.
3. The energy concentrating feature bit assembly of claim 1 wherein: the therapeutic bend feature forms an angle with the standard axis that is no greater than 21.5 degrees.
4. The energy concentrating feature bit assembly of claim 1 wherein: the elbow dynamic balancing feature is offset from a regular outer surface at the proximal end of the cutter head unit; the elbow dynamic balance characteristic part is decomposed into a plurality of dynamic balance adjusting units, and the elbow dynamic balance adjusting units are distributed on the same side of the axial standard axis.
5. The energy concentrating feature bit assembly of claim 1 wherein: the pressure matching feature face is tapered relative to the curved central axis in an approximately isosceles trapezoid shape, and a dimension of the pressure matching feature face near the distal end of the cutter head unit is smaller than a dimension of the pressure matching feature near the proximal end of the cutter head unit.
6. The energy concentrating feature bit assembly of claim 1 wherein: the projection of the negative angle compensation feature part on a plane passing through the axial standard axis and perpendicular to the direction of the pressure matching feature surface is a single 3-order smooth nonlinear line, and the single 3-order smooth nonlinear line is not parallel to the axial standard axis.
7. The energy concentrating feature bit assembly of claim 1 wherein: the therapeutic bend feature is a polygon having more than 5 sides in a cross-section perpendicular to the central axis of curvature.
8. The energy concentrating feature bit assembly of claim 1 wherein: the therapeutic bend feature comprises, in a cross-section perpendicular to the central axis of bending:
a pressure-matching feature-surface projection line, the length of the pressure-matching feature-surface projection line at different locations across a cross-section perpendicular to the central axis of curvature decreasing from a proximal end of a treatment elbow feature to a distal end of the treatment elbow feature, the distance of the intersection center point of the pressure-matching feature-surface projection line and the central axis of curvature across a cross-section perpendicular to the central axis of curvature increasing from the proximal end of the treatment elbow feature to the distal end of the treatment elbow feature.
9. The energy concentrating feature bit assembly of claim 4 wherein: the elbow dynamic balance adjusting unit is a cross combination of two sections of structures.
10. The energy concentrating feature bit assembly of claim 4 wherein: the elbow dynamic balance adjusting unit is a connecting combined section comprising a plurality of sections of smooth curve sections.
11. The energy concentrating feature bit assembly of claim 1 wherein: the width of the pressure matching feature is tapered in a high order hyperbolic curve relative to the curved central axis.
12. The energy concentrating feature bit assembly of claim 1 wherein: the width of the pressure matching feature face tapers triangularly with respect to the curved central axis.
13. The energy concentrating feature bit assembly of claim 12 wherein: the pressure matching feature profile may be provided as a connected shape of a triangle and a straight line segment coaxial with the bending center with respect to the bending center axis.
14. The energy concentrating feature bit assembly of claim 1 wherein: and the pressure matching characteristic surface is provided with a chute which forms an angle with the bending central axis.
15. The energy concentrating feature bit assembly of claim 1 wherein: and a 3-dimensional energy-gathering rotary coupling part is arranged on the circumferential surface of the power amplification unit.
16. An ultrasonic surgical instrument comprising:
an ultrasonic blade generator, one or more piezo ceramic element transducers, a clamping mechanism, a support body, and a blade device as claimed in any one of claims 1 to 15.
The clamping mechanism cooperating with the blade device of any one of claims 1-15 to provide tissue gripping force; the support body supports mounting a bit device as claimed in any one of claims 1 to 15.
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| CN202110770888.7A CN113662628B (en) | 2021-07-08 | 2021-07-08 | Tool bit device with energy gathering characteristic and ultrasonic surgical instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116983053A (en) * | 2023-09-26 | 2023-11-03 | 以诺康医疗科技（苏州）有限公司 | Ultrasonic scalpel head |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070016236A1 (en) * | 2005-07-18 | 2007-01-18 | Crescendo Technologies, Llc | Balanced ultrasonic curved blade |
| CN201260686Y (en) * | 2008-07-18 | 2009-06-24 | 华外医疗器械(上海)有限公司 | Ultrasound knife head device with balancing characteristics |
| CN106344120A (en) * | 2016-10-25 | 2017-01-25 | 厚凯（天津）医疗科技有限公司 | Torsional vibration type ultrasonic scalpel system |
| CN107750141A (en) * | 2015-06-17 | 2018-03-02 | 伊西康有限责任公司 | With the ultrasonic surgical blade that ultrasonic surgical instrument is used together |
| CN110327100A (en) * | 2019-08-15 | 2019-10-15 | 上海题屏医疗科技有限公司 | A kind of ultrasonic surgical blade |
-
2021
- 2021-07-08 CN CN202110770888.7A patent/CN113662628B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070016236A1 (en) * | 2005-07-18 | 2007-01-18 | Crescendo Technologies, Llc | Balanced ultrasonic curved blade |
| CN201260686Y (en) * | 2008-07-18 | 2009-06-24 | 华外医疗器械(上海)有限公司 | Ultrasound knife head device with balancing characteristics |
| CN107750141A (en) * | 2015-06-17 | 2018-03-02 | 伊西康有限责任公司 | With the ultrasonic surgical blade that ultrasonic surgical instrument is used together |
| CN106344120A (en) * | 2016-10-25 | 2017-01-25 | 厚凯（天津）医疗科技有限公司 | Torsional vibration type ultrasonic scalpel system |
| CN110327100A (en) * | 2019-08-15 | 2019-10-15 | 上海题屏医疗科技有限公司 | A kind of ultrasonic surgical blade |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116983053A (en) * | 2023-09-26 | 2023-11-03 | 以诺康医疗科技（苏州）有限公司 | Ultrasonic scalpel head |
| CN116983053B (en) * | 2023-09-26 | 2024-01-26 | 以诺康医疗科技（苏州）有限公司 | Ultrasonic scalpel head |
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| CN113662628B (en) | 2023-06-13 |
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