CN110403672B - Ultrasonic medical surgical instrument - Google Patents
Ultrasonic medical surgical instrument Download PDFInfo
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- CN110403672B CN110403672B CN201910365612.3A CN201910365612A CN110403672B CN 110403672 B CN110403672 B CN 110403672B CN 201910365612 A CN201910365612 A CN 201910365612A CN 110403672 B CN110403672 B CN 110403672B
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- surgical instrument
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- 230000008093 supporting effect Effects 0.000 claims abstract description 118
- 230000026683 transduction Effects 0.000 claims abstract description 22
- 238000010361 transduction Methods 0.000 claims abstract description 22
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- 238000007667 floating Methods 0.000 claims abstract description 16
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 153
- 238000004804 winding Methods 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 12
- 239000013013 elastic material Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 9
- 230000002787 reinforcement Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 description 6
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- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000002439 hemostatic effect Effects 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
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- 239000010839 body fluid Substances 0.000 description 2
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- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
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- 230000000740 bleeding effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, e.g. tourniquets
- 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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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B17/320092—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
- A61B2017/320095—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw with sealing or cauterizing means
Abstract
The invention belongs to the technical field of ultrasonic surgical medical systems, and particularly relates to an ultrasonic medical surgical instrument. The ultrasonic surgical instrument comprises a gun type handle, a waveguide, an inner tube and an outer tube, wherein the waveguide, the inner tube and the outer tube are arranged on the gun type handle, the inner tube is sleeved on the periphery of the waveguide, the outer tube is sleeved on the periphery of the inner tube, the ultrasonic surgical instrument comprises a long handle type shell and an ultrasonic transduction mechanism penetrating into the long handle type shell, the ultrasonic transduction mechanism is arranged on the gun type handle, the ultrasonic transduction mechanism is connected with the waveguide, and the front end of the ultrasonic transduction mechanism is connected with the long handle type shell through a floating supporting mechanism. The invention has the advantages of less energy loss in the transmission process of ultrasonic waves and good waveguide supporting effect.
Description
Technical Field
The invention belongs to the technical field of ultrasonic surgical medical systems, and particularly relates to an ultrasonic medical surgical instrument.
Background
The ultrasonic surgical medical cutting hemostatic instrument comprises an ultrasonic generator, a transducer, an execution part and other parts, wherein the transducer converts high-frequency electric signals of the ultrasonic generator into ultrasonic mechanical energy for cutting and coagulation of a patient part. The ultrasonic surgical medical cutting hemostatic instrument is used as a high-frequency electrosurgical tool, has the characteristics of less bleeding, less damage to surrounding tissues, quick postoperative recovery and the like, acts on human tissues to cut and coagulate, does not cause side effects such as tissue dryness, burn and the like, and does not have current passing through the human body when the executing part works. In the endoscopic surgery, ultrasonic mechanical energy is required to be transmitted to an executing part through an ultrasonic waveguide built in an inner tube, ultrasonic waves propagate along a longitudinal sine wave of the ultrasonic waveguide, and in the transmission process, the ultrasonic waves are subjected to surface waves, transverse waves and torsional waves besides the longitudinal waves, so that the ultrasonic mechanical energy is attenuated. Since the waveguide is long and subject to radial bending, several supports are required to be provided in the axial direction, which supports should reduce the loss of ultrasound energy propagation.
In the prior art, a support assembly is generally arranged between the inner tube and the ultrasonic waveguide, and the support assembly is generally made of a flexible material so as to reduce attenuation of sine waves in ultrasonic waves and ensure that enough ultrasonic mechanical energy is transmitted to an execution position. However, in order to reduce the ultrasonic impedance, the support assembly is generally softer and has a poor support stiffness, and in particular, the support at the distal end of the ultrasonic waveguide has a stiffness substantially equal to the stiffness of the rest of the support, and due to the specificity of the position of the support at the distal end of the ultrasonic waveguide, i.e. the outermost end of the support assembly, the support stiffness is not sufficient to easily cause instability of the support, thereby affecting the propagation of ultrasonic mechanical energy. Obviously, the structural design of the ultrasonic guided distal support in the prior art is not reasonable enough. On the other hand, since the ultrasound distal end is in close proximity to the execution site, blood, body fluid, etc. need to be prevented from entering the inner tube at the time of operation of the execution site. Therefore, the sealing requirement on the distal end support piece of the ultrasonic waveguide is higher, however, the structural design of the support piece in the prior art is not reasonable enough, the sealing performance is not high enough, and the sufficient sealing effect is difficult to achieve, and blood, body fluid and the like still enter the inner tube in the actual use process.
On the other hand, the flange of the ultrasonic transducer is disposed on and typically integrally connected to the horn of the ultrasonic transducer. In order to mount the ultrasonic transducer, the horn needs to be fitted by a flange plate so that the ultrasonic transducer is mounted. Because the ultrasonic wave propagates in the amplitude transformer, the ultrasonic wave is seriously attenuated in the transmission process due to the unreasonable mounting structure, so that the performance of the whole ultrasonic surgical medical cutting hemostatic instrument is affected. In the prior art, the design of the assembly structure of the flange plate of the ultrasonic transducer is not reasonable enough, and the ultrasonic wave attenuation is easily caused by too high or too soft assembly rigidity of the flange plate.
Disclosure of Invention
The present invention has been made in view of the above problems, and an object of the present invention is to provide an ultrasonic medical surgical instrument which can reduce attenuation of ultrasonic waves and has a good waveguide supporting effect.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the ultrasonic surgical instrument comprises a gun type handle, a waveguide, an inner pipe and an outer pipe, wherein the waveguide, the inner pipe and the outer pipe are arranged on the gun type handle, the inner pipe is sleeved on the periphery of the waveguide, the outer pipe is sleeved on the periphery of the inner pipe, the ultrasonic surgical instrument comprises a long handle type shell and an ultrasonic transduction mechanism penetrating into the long handle type shell, the ultrasonic transduction mechanism is arranged on the gun type handle and is connected with the waveguide, the front end of the ultrasonic transduction mechanism is connected with the long handle type shell through a floating support mechanism, the distal end of the waveguide is connected with the inner pipe through a sealing soft support structure, a plurality of waveguides are further arranged between the waveguide and the inner pipe along the axial direction, the sealing soft support structure and the sealing soft support structure are both positioned at nodes of the waveguide and are nearest to the distal end of the waveguide, and the supporting rigidity of the sealing soft support structure is larger than that of the sealing soft support structure.
In the ultrasonic medical surgical instrument, the sealing soft supporting structure comprises a rigid supporting structure which is arranged at the far end of the waveguide and protrudes outwards in the radial direction, a sealing supporting sleeve is sleeved on the periphery of the rigid supporting structure, an inner sealing structure which can form sealing with the outer wall of the waveguide when the sealing supporting sleeve is arranged between the inner pipe and the waveguide is arranged on the inner side of the sealing supporting sleeve, and an outer sealing structure which can form sealing with the inner wall of the inner pipe when the sealing supporting sleeve is arranged between the inner pipe and the waveguide is arranged on the outer side of the sealing supporting sleeve.
In the ultrasonic medical surgical instrument, the rigid supporting structure comprises at least one rigid convex ring protruding out of the waveguide in the radial direction, the rigid convex ring and the waveguide are integrally formed, annular grooves which are arranged in one-to-one correspondence with the rigid convex rings are formed in the inner side of the sealing supporting sleeve, and the rigid convex rings are embedded in the annular grooves.
In the ultrasonic medical surgical instrument, the number of the rigid convex rings is one, the number of the annular grooves is one, the shape of the rigid convex rings is matched with the groove shape of the annular grooves, and the outer surfaces of the rigid convex rings are tightly contacted with the groove walls of the annular grooves to form a part of the inner sealing structure.
In the ultrasonic medical surgical instrument, the cross section of the rigid convex ring is isosceles trapezoid, and the cross section of the annular groove is isosceles trapezoid.
In the ultrasonic medical surgical instrument, the rigid support structure is positioned in the middle area of the sealing support sleeve, and the deformation capacity of the part of the sealing support sleeve corresponding to the area of the rigid support structure is smaller than that of the part of the sealing support sleeve corresponding to the area of the two sides of the rigid support structure.
In the ultrasonic medical surgical instrument, the inner sealing structure comprises first annular sealing surfaces respectively arranged at two sides of the rigid supporting structure, and the first annular sealing surfaces are in close contact with the outer wall of the waveguide; the outer sealing structure comprises a second annular sealing surface, and the second annular sealing surface is tightly contacted with the inner wall of the inner tube.
In the ultrasonic medical surgical instrument, the outer side of the sealing support sleeve is also provided with a sealing reinforcement structure which can improve the sealing effect of the sealing support sleeve and the inner wall of the inner tube when the sealing support sleeve is arranged between the inner tube and the waveguide.
In the ultrasonic medical surgical instrument, the sealing reinforcing structure comprises at least one sealing lip, the sealing lip is positioned at one end of the sealing support sleeve far away from the distal end of the waveguide and can be clung to the inner wall of the inner tube, and an annular accommodating groove is formed between the outer sealing structure and the sealing lip.
In the ultrasonic medical surgical instrument, the lip top of the sealing lip is higher than the outside sealing structure in a natural state, and the lip top is extruded and deformed when the sealing support sleeve is positioned between the inner tube and the waveguide so as to form a face seal with the inner wall of the inner tube.
In the ultrasonic medical surgical instrument, the node soft supporting structure comprises a node supporting ring, wherein the inner side of the node supporting ring is provided with an inner side supporting structure which can be in circumferential continuous contact or circumferential annular interval contact with the outer wall of the waveguide, and the outer side of the node supporting ring is provided with an outer side supporting structure which can be in circumferential continuous contact or circumferential annular interval contact with the inner wall of the inner pipe.
In the ultrasonic medical surgical instrument, the outer support structure comprises at least two outer support parts extending outwards in the radial direction, and the outer ends of the outer support parts can be respectively contacted with the inner wall of the inner tube to form a support; or the outer support structure comprises an outer support annulus located outside the nodal support ring.
In the ultrasonic medical surgical instrument, the outer support parts have the same shape and size and are uniformly distributed in the circumferential direction, and each outer support part has a centripetal structure pointing to the central axis of the waveguide; the cross section of the outer supporting part is isosceles trapezoid.
In the ultrasonic medical surgical instrument described above, the medial support structure includes an inner support ring surface positioned inside the node support ring; or the inner support structure comprises at least two inner support parts extending outwards in radial direction, and the outer ends of the inner support parts can be respectively contacted with the outer wall of the waveguide to form a support.
In the ultrasonic medical surgical instrument, the floating support mechanism comprises a flange plate arranged at the front end of the amplitude transformer of the ultrasonic transduction mechanism, a cylindrical rear support seat is arranged on one surface of the flange plate, the amplitude transformer penetrates through the rear support seat, a cylindrical front support gasket made of flexible materials is arranged on the other surface of the flange plate, the front support seat is internally provided with a front support gasket made of flexible materials, one surface of the flange plate, which faces the front support gasket, abuts against the front support gasket, the front end of the rear support seat enters the front support seat, a rear support gasket made of flexible materials is arranged between the front end of the rear support seat and the flange plate, one surface of the flange plate, which faces the rear support gasket, abuts against the rear support gasket, and the front end of the rear support seat abuts against the rear support gasket, so that the flange plate is clamped between the front support gasket and the rear support gasket.
In the ultrasonic medical surgical instrument, the rear supporting washer is cylindrical, one end of the rear supporting washer, which faces the front end of the rear supporting seat, is provided with a radial inward annular flanging, the flange is positioned in the rear supporting washer, so that the outer edge of the flange is surrounded by the rear supporting washer, one surface of the flange, which faces the annular flanging, is abutted against one surface of the annular flanging, and the front end of the rear supporting seat is abutted against the other surface of the annular flanging.
In the ultrasonic medical surgical instrument, one end of the rear supporting washer facing the front end of the rear supporting seat is provided with a plurality of centripetal distributed accommodating grooves, the front end of the rear supporting seat is provided with a plurality of centripetal distributed convex bodies protruding out of the front end face of the rear supporting seat, the accommodating grooves and the convex bodies are arranged in a one-to-one correspondence manner and the convex bodies are embedded in the accommodating grooves, and the front end face of the rear supporting seat abuts against one face of the annular flanging.
In the ultrasonic medical surgical instrument, the accommodating grooves are positioned at the outer edge of the rear support washer and are uniformly distributed in the circumferential direction; the convex bodies are positioned at the outer edge of the front end of the rear supporting seat and are uniformly distributed in the circumferential direction; the lateral wall of back support packing ring be equipped with a plurality of and holding groove one-to-one cross the wire casing, cross the wire casing and extend along back support packing ring axial, the one end of crossing the wire casing be linked together with the holding groove, the other end extends to the other end of back support packing ring, and wears to be equipped with the control line in one of them cross the wire casing.
In the ultrasonic medical surgical instrument, the inner side of the front end of the rear supporting seat is provided with a first wire passing hole which is obliquely arranged, the inner side of the rear end of the front supporting seat is provided with a second wire passing hole which is obliquely arranged, the first wire passing hole and the second wire passing hole are distributed in a splayed shape, and the control wire passes through the first wire passing hole, the wire passing groove and the second wire passing hole so as to enter the front supporting seat from the rear supporting seat to cross the periphery of the flange plate.
In the ultrasonic medical surgical instrument, the top of the convex body is provided with an inclined plane which gradually rises from outside to inside along the radial direction of the rear supporting seat; the shape of the accommodating groove is matched with the shape of the convex body.
In the ultrasonic medical surgical instrument, one surface of the flange plate facing the annular flanging is provided with a plurality of positioning notches, one surface of the annular flanging facing the annular flanging is provided with a plurality of positioning convex blocks, the positioning notches are in one-to-one correspondence with the positioning convex blocks, and the positioning convex blocks are embedded in the positioning notches; the positioning notches are positioned at the outer edge of the flange plate and are uniformly distributed in the circumferential direction, and the positioning convex blocks are positioned between the annular flanging and the inner wall of the rear supporting gasket and are uniformly distributed in the circumferential direction.
In the ultrasonic medical surgical instrument, an annular retainer ring is arranged in the front supporting seat, and one end of the rear supporting washer, which is far away from the front end of the rear supporting seat, is abutted against the annular retainer ring; the annular check ring is provided with an annular sinking groove on one surface of the annular check ring facing the rear supporting gasket, and the front supporting gasket is arranged in the annular sinking groove.
In the ultrasonic medical surgical instrument, the flange plate and the amplitude transformer are integrally formed, and the flange plate is arranged at the node of the amplitude transformer; the front support gasket and the rear support gasket are both made of elastic materials; the rear end of the front supporting seat is fixedly sleeved with the front end of the rear supporting seat, and an annular sealing ring is arranged at the sleeved position of the front supporting seat and the rear supporting seat.
In the ultrasonic medical surgical instrument, the rear end of the amplitude transformer is connected with the piezoelectric component, a first power line, a second power line and a control line are arranged on the wire inlet structure at the rear end of the long handle type shell, a wire winding seat fixed in the long handle type shell is sleeved on the piezoelectric component, one end of the wire winding seat is a wire winding disc, a wire winding structure is arranged on one surface of the wire winding disc, a plurality of sheet-shaped bodies with one ends connected to the wire winding disc and the other ends perpendicular to the plane where the wire winding disc is located are arranged on the outer edge of the other surface of the wire winding disc, the sheet-shaped bodies are distributed at intervals in the circumferential direction and surround to form an accommodating space, one end of the accommodating space is an opening for the piezoelectric component to enter the accommodating space, a gap extending from the wire winding disc to the opening is formed between two adjacent sheet-shaped bodies in the circumferential direction, the first power line enters one strip-shaped gap through the wire winding structure and is connected with the middle of the piezoelectric component, the second power line enters the other gap through the wire winding structure and is connected with the front part of the piezoelectric component, and the control line extends forwards along the axial direction of the wire winding structure.
In the ultrasonic medical surgical instrument, the winding structure comprises a plurality of strip-shaped bodies, wherein the inner ends of the strip-shaped bodies are converged to the center of the wire reel, the outer ends of the strip-shaped bodies radiate outwards, wire clamping bodies which are suspended and extend to the lateral directions of the strip-shaped bodies are arranged at the outer ends of the strip-shaped bodies, wire clamping openings are formed between the end surfaces of the wire reel and the lower parts of the wire clamping bodies, the number of the strip-shaped spaces is equal to that of the wire clamping openings, and the wire clamping openings and the strip-shaped spaces are respectively arranged in circumferential dislocation.
In the ultrasonic medical surgical instrument, the first power line and the second power line respectively extend outwards from the central area of the corresponding wire spool along one of the strip-shaped bodies and turn to the corresponding strip-shaped interval around the rear side of the corresponding wire clamping opening, a wire passing through groove extending parallel to the strip-shaped interval from the edge of the wire spool is formed in one of the sheet-shaped bodies, a wire passing through hole is formed in the front end of the sheet-shaped body provided with the wire passing through groove, the wire passing through groove and the wire passing through hole are correspondingly arranged, the control line extends outwards from the central area of the corresponding wire spool along one of the strip-shaped bodies and turns to the wire passing through groove around the rear side of the corresponding wire clamping opening and axially extends forwards to the periphery of the floating support mechanism along the wire passing through groove and the wire passing through hole.
In the ultrasonic medical surgical instrument, the front ends of the sheet-shaped bodies are respectively provided with positioning parts which extend outwards obliquely and then continue to extend along the same direction perpendicular to the plane where the wire spool is positioned, the outer sides of the positioning parts are respectively provided with positioning structures, the inner sides of the positioning parts corresponding to the front ends of the sheet-shaped bodies provided with the wire passing through grooves are provided with convex strips protruding out of the inner walls of the positioning parts, and the wire passing through holes are arranged in the convex strips; the inner ends of the raised strips are provided with open grooves which are connected with the through line through holes and face to the inner side, so that one part of the through line through holes is a lateral slotting through hole, and the other part of the through line through holes is a circumferential closed through hole; the positioning structure comprises a clamping step arranged on the outer side of the positioning part, one side of the positioning part circumferentially extends into the accommodating space so as to narrow the width of the opening of the accommodating space, and the clamping step is clamped with a clamping groove on the inner wall of the long handle type shell.
In the ultrasonic medical surgical instrument, one end of the sheet body connected with the wire spool is in an arc-shaped sheet shape, and the sheet bodies are uniformly distributed in the circumferential direction; the rear ends of the strip-shaped intervals are communicated with gaps which are arranged at the edge of the winding disc and between two circumferentially adjacent sheet-shaped bodies.
In the ultrasonic medical surgical instrument, a tubular body made of an elastic material is arranged between the waveguide and the inner tube, and a longitudinal opening penetrating through two longitudinal ends of the tubular body is arranged at the side part of the tubular body so as to enable the cross section of the tubular body to be C-shaped, wherein the inner diameter of the tubular body is larger than the outer diameter of the waveguide, and the outer diameter of the tubular body is smaller than the inner diameter of the inner tube.
Compared with the prior art, the invention has the advantages that:
1. The ultrasonic wave has little energy loss in the transmission process, and the waveguide supporting effect is good.
2. The sealing effect of the soft sealing support structure is good, and the annular accommodating groove is formed in the sealing lip, so that buffering temporary storage can be realized, and leakage risk is further reduced.
3. The floating support can be provided for the flange plate of the ultrasonic transducer, so that ultrasonic attenuation is reduced; the front support gasket and the rear support gasket are matched with each other, so that the relative sealing installation of the flange plate of the ultrasonic transducer can be realized, and the floating support can play a role in sealing during high-temperature high-pressure sterilization to prevent water and gas from entering the transducer; in addition, the insulating elastic material is adopted to make, so that the insulating material can also play a role in electric insulation and improve the safety.
4. The peripheral space and the axial space in the long handle type shell are reasonably utilized to arrange the lines, so that the problems that the lines are entangled with each other, the lines are pulled and broken and the lines are easy to damage are avoided; in addition, the ultrasonic transducer has a good heat dissipation effect, avoids the problem of circuit damage caused by a large amount of heat generated by long-time working, and can prevent the power supply line and the control line from interfering with the vibration working of the ultrasonic transducer.
Drawings
FIG. 1 is a schematic view of the structure provided by the present invention;
FIG. 2 is an exploded view of a portion of the structure provided by the present invention;
FIG. 3 is a schematic view of a waveguide structure provided with a sealed soft support structure and a node soft support structure and corresponding to ultrasonic waves;
FIG. 4 is a cross-sectional view of a sealed flexible support structure provided by the present invention;
FIG. 5 is a schematic view of a rigid support structure provided by the present invention;
FIG. 6 is a cross-sectional view of a seal support sleeve provided by the present invention;
FIG. 7 is a schematic perspective view of a seal support sleeve provided by the present invention;
FIG. 8 is a perspective view of a sealed flexible support structure provided by the present invention;
FIG. 9 is a cross-sectional view of a nodal soft support structure provided by the present invention;
FIG. 10 is a schematic view of a three-dimensional structure of a nodal soft support structure provided by the present invention;
FIG. 11 is a schematic cross-sectional view of a nodal soft support structure provided by the present invention;
FIG. 12 is a schematic cross-sectional view of an ultrasonic transducer provided by the present invention;
FIG. 13 is an enlarged view of part A of FIG. 12 in accordance with the present invention;
FIG. 14 is a schematic view of a front support structure according to the present invention;
FIG. 15 is a perspective view of a flanged horn according to the present invention;
FIG. 16 is a schematic view of a rear support structure provided by the present invention;
FIG. 17 is a schematic view of the rear support washer configuration provided by the present invention;
FIG. 18 is a schematic view of another angle of the rear support washer provided by the present invention;
FIG. 19 is a schematic view of a winding structure provided by the present invention;
FIG. 20 is a cross-sectional view of a rear support seat assembly structure provided by the present invention;
Fig. 21 is a schematic view of a winding seat according to the present invention;
FIG. 22 is a schematic view of another angle of the winding seat according to the present invention;
FIG. 23 is a schematic view of the structure of the waveguide of the present invention with a tubular body disposed between the waveguide and the inner tube;
Fig. 24 is a schematic view of the structure of a tubular body provided by the present invention.
In the drawing the view of the figure, ultrasonic wave Z, ultrasonic surgical instrument 1, ultrasonic transducer 2, gun handle 3, waveguide 4, inner tube 5, outer tube 6, elongated handle housing 7, floating support 8, sealing flexible support 9, node flexible support 10, node 11, rigid support 12, sealing support sleeve 13, outer sealing structure 14, rigid collar 15, annular groove 16, inner sealing structure 17, first annular sealing surface 18, second annular sealing surface 19, sealing reinforcement 20, sealing lip 21, annular receiving groove 22, lip top 23, inner support ring 24, node support ring 25, inner support structure 26, outer support structure 27, outer support 28, horn 30, flange 31, rear support 32, front support 33, front support gasket 34, and inner support ring rear support washer 35, annular flange 36, receiving groove 37, boss 38, wire passing groove 39, control wire 40, first wire passing hole 41, second wire passing hole 42, inclined surface 43, positioning notch 44, positioning projection 45, annular retainer 46, annular countersink 47, annular seal 48, piezoelectric assembly 49, wire feeding structure 51, first power wire 52, second power wire 53, wire holder 54, wire spool 55, wire winding structure 56, sheet 57, receiving space 58, opening 59, bar-shaped space 60, bar-shaped body 61, wire clamping body 62, wire clamping port 63, wire passing through groove 64, wire passing through hole 65, positioning portion 66, positioning structure 67, raised strip 68, open groove 69, clamping step 70, clamping groove 71, notch 72, tubular body 73, longitudinal opening 74.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
The ultrasonic medical surgical instrument comprises an ultrasonic surgical instrument 1 and an ultrasonic transduction device 2 connected to the ultrasonic surgical instrument 1, wherein the ultrasonic surgical instrument 1 comprises a gun type handle 3, a waveguide 4, an inner tube 5 and an outer tube 6 which are arranged on the gun type handle 3, the inner tube 5 is sleeved on the periphery of the waveguide 4, the outer tube 6 is sleeved on the periphery of the inner tube 5, the ultrasonic transduction device 2 comprises a long handle shell 7 and the ultrasonic transduction device 2 penetrating through the long handle shell 7, the ultrasonic transduction device 2 is arranged on the gun type handle 3, the ultrasonic transduction device 2 is connected with the waveguide 4, the front end of the ultrasonic transduction device 2 is connected with the long handle shell 7 through a floating support mechanism 8, the distal end of the waveguide 4 is connected with the inner tube 5 through a sealing soft support structure 9, a plurality of nodes soft support structures 10 which are distributed along the axial direction of the waveguide 4 are further arranged between the waveguide 4 and the inner tube 5, the sealing soft support structure 9 and the nodes soft support structures 10 are both positioned at the soft nodes 11 of the waveguide 4 and are positioned at the positions of the soft support structures which are far away from the sealing soft support structures 9, and the soft support structures are positioned at the positions which are far away from the sealing soft support structures 10 and are just far away from the soft support structures of the waveguide soft support structures.
The ultrasonic transducer 2 in the ultrasonic medical surgical instrument converts electric energy into high-frequency ultrasonic mechanical energy and propagates the high-frequency ultrasonic mechanical energy to the execution part in a longitudinal sine wave mode through the waveguide 4 in the inner tube 5, and transverse waves, surface waves and the like on the waveguide 4 are different from the longitudinal sine wave direction, so that the longitudinal sine wave propagation is influenced to accelerate the attenuation of the ultrasonic mechanical energy. Since the ultrasonic wave is mainly longitudinal sine wave propagation during the ultrasonic wave conduction, the displacement at the node 11 of the waveguide 4 is almost unchanged, so in this embodiment, the seal soft support structure 9 and the node soft support structure 10 are provided at the node 11 of the waveguide 4 so that the waveguide 4 has a reliable support while conducting the ultrasonic wave. The unavoidable surface waves, transverse waves and torsional waves on the waveguide 4 are eliminated to a certain extent by the support of the sealing soft support structure 9 and the node soft support structure 10, so that the transmission efficiency of the ultrasonic energy is improved, and the loss of the ultrasonic energy in the transmission process is reduced.
Specifically, the sealing soft support structure 9 comprises a rigid support structure 12 arranged at the distal end of the waveguide 4 and protruding radially outwards, a sealing support sleeve 13 is sleeved on the periphery of the rigid support structure 12, an inner side sealing structure 17 capable of forming a seal with the outer wall of the waveguide 4 when the sealing support sleeve 13 is arranged between the inner tube 5 and the waveguide 4 is arranged on the inner side of the sealing support sleeve 13, and an outer side sealing structure 14 capable of forming a seal with the inner wall of the inner tube 5 when the sealing support sleeve 13 is arranged between the inner tube 5 and the waveguide 4 is arranged on the outer side of the sealing support sleeve 13. The inner sealing structure 17, the outer sealing structure 14 and the sealing support sleeve 13 are integrally formed by soft materials, gaps between the waveguide 4 and the pipe wall of the inner pipe 5 are filled through the inner sealing structure 17 and the outer sealing structure 14, and meanwhile, the sealing support sleeve 13 is deformed after being extruded by the inner wall of the inner pipe 5, so that the inner sealing structure 17 and the outer sealing structure 14 are respectively tightly attached to the waveguide 4 and the inner wall of the inner pipe 5, liquid outside the inner pipe 5 is prevented from entering the inner cavity of the inner pipe 5, the propagation of ultrasonic waves on the waveguide 4 is prevented, and meanwhile, liquid outside the inner pipe 1 is prevented from entering the inner cavity of the inner pipe 1, polluting the waveguide and remaining in the inner pipe 1.
Preferably, the rigid support structure 12 comprises at least one rigid collar 15 protruding radially from the waveguide 4, said rigid collar 15 being integrally formed with the waveguide 4, such that the rigid collar 15 is integral with the waveguide 4. The rigid collar 15 is formed integrally with the waveguide 4 to reduce manufacturing costs. Alternatively, the rigid collar 15 may be fixedly attached to the waveguide 4 after being manufactured separately, by gluing, welding, or interference or other means known to those skilled in the art.
The inner side of the sealing support sleeve 13 is provided with annular grooves 16 which are arranged in one-to-one correspondence with the rigid convex rings 15, and the rigid convex rings 15 are embedded in the annular grooves 16. The rigid convex ring 15 is embedded in the annular groove 16, and the rigid convex ring and the outer wall of the waveguide 4 and the inner wall of the inner tube 5 together eliminate the degree of freedom of the sealing support sleeve 13, so that the sealing support sleeve 13 is fixedly connected with the waveguide 4. Preferably, in this embodiment, the number of the rigid convex rings 15 is one, the number of the annular grooves 16 is one, and the shape of the rigid convex rings 15 is adapted to the groove shape of the annular grooves 16, so that the rigid convex rings 15 are clamped into the annular grooves 16 to form a tight fit. The outer surface of the rigid collar 15 is in close contact with the wall of the annular groove 16 to form part of the inner sealing structure 17. Liquid outside the inner tube 5 is prevented from entering the interior of the inner tube 5 through the gap between the waveguide 4 and the annular groove 16.
Further, the cross section of the rigid convex ring 15 is isosceles trapezoid, and the cross section of the annular groove 16 is isosceles trapezoid. Preferably, the top of the rigid convex ring 15 is a plane, and the bottom of the annular groove 16 is a plane, so that the rigid convex ring 15 and the annular groove 16 are easy to be matched, assembly time is reduced, the side wall of the sealing support sleeve 13 is enabled to be equal to even extrusion force perpendicular to the arc shape of the inner side wall of the inner tube 5, stress concentration is avoided, the service life of the sealing support sleeve 13 is influenced, and meanwhile the extrusion force is fully applied to the wall of the inner tube 5 to extrude the sealing support sleeve 13.
Further, the rigid support structure 12 is located in a central region of the sealing support sleeve 13, and the deformation capacity of the sealing support sleeve 13 corresponding to the region of the rigid support structure 12 is smaller than that of the sealing support sleeve 13 corresponding to the region of the two sides of the rigid support structure 12. When the sealing support sleeve 13 is deformed by external force, the parts of the sealing support sleeve 13 corresponding to the two side areas of the rigid support structure 12 deform before the middle part of the sealing support sleeve 13, and the external force is absorbed, so that the deformation resistance of the sealing support sleeve 13 corresponding to the parts of the rigid support structure 12 is improved, the middle part of the sealing support sleeve 13 is always attached to the inner wall of the inner tube 1, and the sealing performance is improved. Preferably, the seal support sleeve 13 is integrally formed of an elastomeric material. The deformation of the sealing support sleeve 13 after being stressed is adapted to the waveguide 4 and the inner wall of the inner tube 5, so that gaps are avoided, and meanwhile, the sealing support sleeve 13 obtains deformation elasticity to resist the pressure of the outer liquid of the inner tube 5 on the sealing support sleeve 13.
Preferably, the rigid support structure 12 is located at the node 11 of the waveguide 4. Since the ultrasonic wave propagates in a longitudinal sine wave manner, the displacement at the node 11 of the waveguide 4 is hardly changed, and therefore in the present embodiment, the rigid support structure 12 is provided at the node 11 of the waveguide 4 so that the waveguide 4 has a reliable support when propagating the ultrasonic wave. While the unavoidable surface, transverse and torsional waves on the waveguide 4 are dissipated to some extent by the support of the rigid support structure 12 and the sealing support sleeve 13 to increase the efficiency of the propagation of the ultrasonic energy and reduce the loss of the ultrasonic energy during the propagation.
The inner sealing structure 17 comprises first annular sealing surfaces 18 respectively arranged at two sides of the rigid support structure 12, and the first annular sealing surfaces 18 are tightly contacted with the outer wall of the waveguide 4; the annular groove 16 cooperates with the rigid support structure 12 so that the position of the waveguide 4 relative to the sealing support sleeve 13 remains unchanged during the propagation of the ultrasonic waves. Preferably, the outer sealing structure 14 comprises a second annular sealing surface 19, said second annular sealing surface 19 being in close, gapless contact with the inner wall of the inner tube 5. Preventing liquid outside the inner tube 5 from entering the inner tube through the gap between the second annular sealing surface 19 and the inner wall of the inner tube 5.
The outside of the seal support sleeve 13 is also provided with a seal reinforcing structure 20 which can improve the sealing effect of the seal support sleeve 13 and the inner wall of the inner tube 5 when the seal support sleeve 13 is arranged between the inner tube 5 and the waveguide 4. The seal reinforcing structure 20 comprises at least one seal lip 21, the seal lip 21 is located at the end of the seal support sleeve 13 far away from the distal end of the waveguide 4 and can be clung to the inner wall of the inner tube 5, and an annular accommodating groove 22 is formed between the outer seal structure 14 and the seal lip 21. A person skilled in the art can provide two or more sealing lips 21 according to the sealing requirements. Further, the lip top 23 of the seal lip 21 is higher than the outside seal structure 14 in a natural state, and the lip top 23 is deformed by pressing when the seal support sleeve 13 is located between the inner tube 5 and the waveguide 4 so as to form a face seal with the inner wall of the inner tube 5. So that the lip top 23 of the sealing lip 21 is pressed to obtain a larger deformation amount when the sealing support sleeve 13 is installed between the inner tube 5 and the waveguide 4, thereby being more tightly attached to the inner wall of the inner tube 5 than the outer sealing structure 14, and further preventing the occurrence of a flow gap between the sealing lip 21 and the inner wall of the inner tube 5.
Preferably, in the present embodiment, the inside of the node support ring 25 has an inside support structure 26 capable of being in circumferential annular continuous contact with the outer wall of the waveguide 4, and the node support ring 25 is in continuous contact with the waveguide 4. Preferably, the outside of the node support ring 25 has an outside support structure 27 that can contact the inner wall of the inner tube 5 at a circumferential annular spacing. To reduce acoustic resistance, the outer support structure 27 is split centripetally distributed to reduce the area for reducing the ultrasonic impedance. And the node support ring 25 does not need to consider the need to prevent outside liquid from entering the inner tube 4. Those skilled in the art will appreciate that the inner support structure 26 is in circumferentially spaced contact with the outer wall of the waveguide 4 and the outer support structure 27 is in circumferentially continuous contact with the inner wall of the inner tube 5.
Preferably, the node support ring 25 is integrally formed from an elastic material, and the invention is not limited to the specific type of the elastic material, and may be a rubber material or a silica gel material; the node support ring 25 is located at the node 11 of the waveguide 4, the node 11 is the minimum or zero crossing point of the vibration motion standing wave, and the ultrasonic wave propagates along the longitudinal sine wave of the waveguide 4, so that the ultrasonic impedance can be further reduced by arranging the node support ring 25 at the node 11.
The outer support structure 27 comprises at least two radially outwardly extending outer support portions 28, wherein the outer ends of the outer support portions 28 are respectively capable of contacting the inner wall of the inner tube 5 to form a support; in this embodiment, the number of the outer support structures 27 is preferably four, and the outer ends of the outer support portions 28 can respectively contact with the inner wall of the inner tube 5 to form a support, so as to obtain smaller ultrasonic impedance, and aim to reduce the loss of ultrasonic mechanical energy. One skilled in the art may also use the outboard support structure 27 as an outboard support annulus outboard of the nodal support ring 25.
Preferably, the outer support portions 28 are identical in shape and size and uniformly distributed in the circumferential direction, and each outer support portion 28 has a centripetal structure pointing to the central axis of the waveguide 4, so that the acting force of the outer support portion 28 on the inner wall of the inner tube 5 is perpendicular to the tangent line of the acting point, the node support ring 25 is prevented from being parallel to the node support ring 25 due to the reaction force of the inner wall of the inner tube 5, and the node support ring 25 is prevented from rotating to lose the support function. Preferably, the cross section of the outer support 28 is isosceles trapezoid, enhancing the strength of the connection between the outer support 28 and the node support ring 25. At the same time, the opposite force of the inner wall of the inner tube 5 to the outer support 28 is made uniform on both sides.
Preferably, the inboard support structure 26 includes an inboard support ring face 24 inboard of the node support ring 25; the inner support ring 24 is in continuous contact with the circumference of the waveguide 4 so that any direction of the evanescent wave at the waveguide 4 is cancelled by the inner support ring. One skilled in the art may also use an inner support structure 26 comprising at least two radially outwardly extending inner support portions, the outer ends of which are capable of contacting the outer walls of the waveguide 4, respectively, to form a support in order to reduce the ultrasonic impedance. Preferably, the inner support portions are identical in shape and size and uniformly distributed in the circumferential direction, and each inner support portion has a centering structure directed toward the central axis of the waveguide 4. Meanwhile, each inner supporting part 27 is in a centripetal structure pointing to the central axis of the waveguide 4, so that the acting force of the inner supporting part 27 on the inner wall of the inner tube 5 is perpendicular to the tangent line of the acting point, the node supporting ring 25 is prevented from being in non-parallel with the node supporting ring 25 by the reacting force of the inner wall of the inner tube 5, and the node supporting ring 25 loses the supporting function by rotating.
The floating support mechanism 8 comprises a flange plate 31 arranged at the front end of an amplitude transformer 30 of the ultrasonic transducer 2, a cylindrical rear support seat 32 is arranged on one surface of the flange plate 31, the amplitude transformer 30 penetrates through the rear support seat 32, a cylindrical front support seat 33 is arranged on the other surface of the flange plate 31, the amplitude transformer 30 penetrates through the front support seat 33, a front support gasket 34 made of flexible materials is arranged in the front support seat 33, one surface of the flange plate 31 facing the front support gasket 34 abuts against the front support gasket 34, the front end of the rear support seat 32 enters into the front support seat 33, a rear support gasket 35 made of flexible materials is arranged between the front end of the rear support seat 32 and the flange plate 31, one surface of the flange plate 31 facing the rear support gasket 35 abuts against the rear support gasket 35, and the front end of the rear support seat 32 abuts against the rear support gasket 35, and the front support seat 33 and the rear support seat 32 are mutually fixedly connected so that the flange plate 31 is clamped between the front support gasket 34 and the rear support gasket 35. In this embodiment, the specific kind of the flexible material is not limited, and an insulating elastic material, preferably a rubber material, may be used, so that an electrical insulation effect may be further achieved, and an effective sealing effect is achieved during high-pressure and high-temperature sterilization, so as to prevent external high-temperature water vapor and the like from entering the ultrasonic transduction cavity.
The horn 30 is clamped and fixed through the front support gasket 34 and the rear support gasket 35 with elasticity to form a floating support for the horn 30, when the ultrasonic transducer converts high-frequency electric signals into ultrasonic mechanical energy to conduct ultrasonic waves on the horn 30, the ultrasonic waves force the horn 30 to vibrate, the horn 30 vibrates and presses the front support gasket 34 and the rear support gasket 35, the front support gasket 34 and the rear support gasket 35 deform, the horn 30 is ensured to have sufficient vibration space when being pushed to vibrate by the ultrasonic waves, the horn 30 is prevented from being locked by the front support seat 33 and the rear support seat 32, and floating connection can be formed, so that attenuation of the ultrasonic mechanical energy is reduced. The rear supporting washer 35 is cylindrical, and an annular flange 36 is formed radially inward at one end of the rear supporting washer 35 facing the front end of the rear supporting seat 32, and the flange 31 is positioned in the rear supporting washer 35 so that the outer edge of the flange 31 is surrounded by the rear supporting washer 35. Preferably, one face of the flange 31 facing the annular flange 36 abuts against one face of the annular flange 36, and the front end of the rear support 32 abuts against the other face of the annular flange 36.
Further, one end of the rear supporting washer 35 facing the front end of the rear supporting seat 32 is provided with a plurality of centripetal distribution containing grooves 37, the front end of the rear supporting seat 32 is provided with a plurality of centripetal distribution convex bodies 38 protruding out of the front end face of the rear supporting seat 32, the containing grooves 37 and the convex bodies 38 are arranged in a one-to-one correspondence manner, the convex bodies 38 are embedded in the containing grooves 37, and the front end face of the rear supporting seat 32 abuts against one face of the annular flanging 36. The accommodating grooves 37 are in one-to-one correspondence with the convex bodies 38, and the convex bodies 38 lock the corresponding accommodating grooves 37, so that the rear support gasket 35 is fixedly connected with the rear support seat 32 under the limiting action of the convex bodies 38 when the rear support gasket 35 receives the rotation acting force of the flange plate 31. Further, the receiving grooves 37 are located at the outer edge of the rear support washer 35 and are uniformly distributed in the circumferential direction; the convex bodies 38 are positioned at the outer edge of the front end of the rear supporting seat 32 and are uniformly distributed in the circumferential direction; the convex body 38 protrudes from the outer edge of the front end of the rear supporting seat 32 and is inserted into the accommodating groove 37, so that the front end of the rear supporting seat 32 is tightly attached to the rear end surface of the rear supporting washer 35, and the tightness of the fit is improved.
Preferably, the outer side wall of the rear supporting washer 35 is provided with a plurality of wire passing grooves 39 corresponding to the accommodating grooves 37 one by one, the wire passing grooves 39 extend along the axial direction of the rear supporting washer 35, one end of each wire passing groove 39 is communicated with the accommodating groove 37, the other end extends to the other end of the rear supporting washer 35, and a control wire 40 is arranged in one wire passing groove 39 in a penetrating mode. In the assembly process, since any accommodating groove 37 corresponds to one wire passing groove, the rear supporting washer 35 can be matched with any convex body 38 through any accommodating groove 37, so that all accommodating grooves 37 can be matched with corresponding convex bodies 38 to form plug-in connection. The universality of the parts is improved, the assembly speed is greatly increased, and the generation efficiency is improved.
The front end inboard of back supporting seat 32 is equipped with the first line hole 41 of slope setting, preceding supporting seat 33 rear end inboard be equipped with the second line hole 42 of slope setting, first line hole 41 and second line hole 42 be splayed type distribution, thereby control line 40 pass first line hole 41, cross line groove 39 and second line hole 42 and get into front supporting seat 33 from back supporting seat 32 and cross the ring flange 31 periphery. So that the control line 40 is not affected by the flange 31, resulting in poor circuit contact and affecting normal use. The top of the boss 38 has a slope 43 and the slope 43 gradually rises from the outside to the inside along the radial direction of the rear supporting seat 32; the shape of the accommodating groove 37 is matched with the shape of the convex body 38. In the process of supporting the gasket 35 and the flange 31 after assembly, the high position at the top of the convex body 38 is firstly led into the accommodating groove 37, along with the compression between the rear supporting gasket 35 and the flange 31, the inclined surface 43 at the top of the convex body 38 is gradually led into the accommodating groove 37, and the convex body 38 is initially led into the accommodating groove 37 in a small volume as the guiding of the integral leading-in of the convex body 38 in a way of leading the high position at the top of the convex body 38 in advance, so that the convex body 38 is easier to be led into the corresponding accommodating groove 37, the assembly difficulty is reduced, and the production efficiency is improved.
A plurality of positioning notches 44 are formed in one surface of the flange plate 31 facing the annular flange 36, a plurality of positioning convex blocks 45 are formed in one surface of the annular flange 36 facing the annular flange 36, the positioning notches 44 are in one-to-one correspondence with the positioning convex blocks 45, and the positioning convex blocks 45 are embedded in the positioning notches 44; the flange 31 is limited to rotate and translate by the insert fit of the positioning notch 44 and the positioning projection 45, so that the relative position of the rear support washer 35 and the flange 31 is kept stable. Preferably, the positioning notches 44 are located at the outer edge of the flange 31 and uniformly distributed in the circumferential direction, and the positioning protrusions 45 are located between the annular flange 36 and the inner wall of the rear support washer 35 and uniformly distributed in the circumferential direction. The positioning notches 44 and the positioning lugs 45 are distributed centripetally, so that when the rear support gasket 35 is acted by force in all directions, the rear support gasket 35 has displacement limitation of one or more groups of positioning notches 44 and the positioning lugs 45, and the relative positions of the rear support gasket 35 and the flange 31 are kept unchanged.
An annular check ring 46 is arranged in the front support seat 33, and one end of the rear support washer 35, which is far away from the front end of the rear support seat 32, is abutted against the annular check ring 46; after the front support seat 33 and the rear support seat 32 are completely connected, the annular retainer ring 46 presses the rear support gasket 35 against the rear support seat 32 to limit the displacement of the rear support gasket 35 in the axial direction of the amplitude transformer 30, so that the rear support gasket 35 is prevented from losing support of the rear support seat 35 when being subjected to ultrasonic waves, and the flange 31 is prevented from losing effective clamping.
The annular retainer ring 46 is provided with an annular countersink 47 on the side facing the rear support washer 35, and the front support washer 34 is disposed in the annular countersink 47. The annular countersink 47 limits the displacement of the front support washer 34 and presses the front support washer 34 against the flange 31 through the bottom of the annular countersink 47 so that the rear support washer 35 and the front support washer 34 cooperate to clamp the flange 31 so that the flange 31 and the amplitude rod 30 are in a relatively closed and effective floating connection.
The flange 31 and the amplitude transformer 30 are integrally formed, the flange 31 is arranged at a node of the amplitude transformer 30, ultrasonic waves are conducted along the longitudinal sine wave of the amplitude transformer 30, the amplitude of the ultrasonic waves at and near the node of the amplitude transformer 30 is minimum, the flange 31 is arranged at the node of the amplitude transformer 30 and clamped by the front support gasket 34 and the rear support gasket 35, the front support gasket 34 and the rear support gasket 35 are subjected to the minimum ultrasonic acting force, the reaction force on the flange 31 is minimum, the ultrasonic wave conduction impedance is greatly reduced, and the loss of ultrasonic wave energy conduction is reduced. On the other hand, in the transmission process of the ultrasonic wave, besides the longitudinal wave, the surface wave, the transverse wave and the torsional wave are also included, so that the mechanical energy of the ultrasonic wave is attenuated, and the flange plate 31 is arranged at the node of the amplitude transformer 30 and is clamped and supported, so that clutter such as the transverse wave, the surface wave and the torsional wave on the amplitude transformer 30 is effectively lost, and the attenuation of the ultrasonic energy on the amplitude transformer 30 is reduced. The front support washer 34 and the rear support washer 35 are each made of an elastic material; the rear end of the front support seat 33 is fixedly sleeved with the front end of the rear support seat 32, and an annular sealing ring 48 is arranged at the sleeved position of the front support seat 33 and the rear support seat 32 to prevent external water vapor and the like from entering the ultrasonic transduction device.
The rear end of the amplitude transformer 30 is connected with the piezoelectric component 49, a first power line 52, a second power line 53 and the control line 40 are arranged on the wire inlet structure 51 at the rear end of the long handle type shell 50, a winding seat 54 fixed in the long handle type shell 50 is sleeved on the piezoelectric component 49, one end of the winding seat 54 is a wire spool 55, a winding structure 56 is arranged on one surface of the wire spool 55, a plurality of flaky bodies 57 with one end connected with the wire spool 55 and the other end extending in the same direction perpendicular to the plane of the wire spool 55 are arranged on the outer edge of the other surface of the wire spool 55, the flaky bodies 57 are distributed at intervals in the circumferential direction and surround to form a containing space 58, one end of the containing space 58 is the wire spool 55, the other end of the containing space 58 forms an opening 59 for the piezoelectric component 49 to enter the containing space 58, a strip-shaped interval 60 extending from the wire spool 55 to the opening 59 is formed between the two adjacent flaky bodies 57 in the circumferential direction, the first power line 52 enters one strip-shaped interval 60 through the wire spool 55 and is connected with the middle part of the piezoelectric component 49, the second power line 53 enters the other strip-shaped interval 60 through the wire spool structure and extends along the axial direction of the other coiling structure 49 and extends along the periphery of the outer edge of the wire spool 49, and extends along the front part of the periphery of the piezoelectric component 49 through the winding structure.
The piezoelectric assembly 49 extends into the accommodating space 58 through the opening 59, so that the winding seat 54 is mounted on the long handle type housing 50, the first power line 52, the second power line 53 and the control line 40 can extend from the winding disc 55 through the strip-shaped interval 60 between the adjacent two sheet-shaped bodies 57, and the winding structure 56 is wound and fixed on the first power line 52, the second power line 53 and the control line 40, so that the winding seat 54 is arranged in the long handle type housing 50, the winding seat 54 is provided with the winding disc 55 with the winding structure 56 on one side and the sheet-shaped bodies 57 arranged at intervals on the other side, the regular arrangement of the first power line 52, the second power line 53 and the control line 40 is simply and conveniently realized, and the problems of mutual entanglement and wire breakage in the dismounting process are avoided.
The winding structure 56 comprises a plurality of strip-shaped bodies 61, wherein the inner ends of the strip-shaped bodies are converged to the center of the wire spool 55, the outer ends of the strip-shaped bodies 61 radiate outwards, wire clamping bodies 62 which are suspended and extend to the lateral directions of the strip-shaped bodies 61 are arranged at the outer ends of the strip-shaped bodies 61, wire clamping openings 63 are formed between the end face of the wire spool 55 and the lower parts of the wire clamping bodies 62, the number of the strip-shaped intervals 60 is equal to that of the wire clamping openings 63, and the wire clamping openings 63 and the strip-shaped intervals 60 are respectively arranged in a circumferential dislocation mode. The rear end of the strip-shaped space 60 is communicated with a notch which is arranged at the edge of the wire spool 55 and is positioned between two adjacent sheet-shaped bodies 57 in the circumferential direction, and the wire spool 55 is provided with through holes which correspond to the wire clamping ports 63 and are communicated with two sides of the wire spool 55. The circuit enters the winding structure 56 through the wire inlet structure 51, extends to the end face of the wire spool 55 through the wire clamping port 63, and then sequentially extends out through the notch and the strip-shaped interval 60, preferably, the distance between the wire clamping body and the end face of the wire spool 55, namely the width of the wire clamping port 63 is smaller than the outer diameter of the circuit, and thus the circuit can be in interference fit with the wire clamping port 63 to finish the fixation of the circuit.
The first power line 52 and the second power line 53 extend outwards along one of the strip-shaped bodies 61 from the central area corresponding to the wire spool 55 and laterally turn to the corresponding strip-shaped space 60 after passing through the corresponding wire clamping opening 63, so that one power line corresponds to one wire clamping opening 63 and one strip-shaped space 60, and the purpose of mutual isolation between the power lines is achieved. A wire passing through groove 64 extending from the edge of the wire spool 55 parallel to the strip-shaped interval 60 is provided on one of the sheet-shaped bodies 57, a wire passing through hole 65 is provided at the front end of the sheet-shaped body 57 provided with the wire passing through groove 64, the wire passing through groove 64 is provided corresponding to the wire passing through hole 65, the control wire 40 extends outwards along one of the body 61 from the central area corresponding to the wire spool 55, winds around the corresponding wire clamping port 63, then laterally turns to the wire passing through groove 64 and extends axially forward along the wire passing through groove 64 and the wire passing through hole 65 to the periphery of the floating support mechanism 8. The wire through slots 64 and the wire through holes 65 combine to form independent wire passages relative to the bar-shaped spaces 60 and the notches, so as to be suitable for controlling wires and power supply wires to extend from the wire spool 55 and the wire winding structure 56 respectively, improve the relative independence between the two wires, and further prevent the wires from intertwining and tearing.
The front ends of the sheet-shaped bodies 57 are respectively provided with a positioning part 66 which extends outwards in an inclined mode and then continues to extend along the same direction perpendicular to the plane where the wire spool 55 is located, and the outer sides of the positioning parts 66 are respectively provided with a positioning structure 67, so that the winding seat can be positioned and installed quickly. A convex strip 68 protruding from the inner wall of the positioning part 66 is arranged on the inner side of the positioning part 66 of the front end of the sheet-shaped body 57 provided with the wire passing through groove 64 corresponding to the wire passing through groove 64, and the wire passing through hole 65 is arranged in the convex strip 68; the inner end of the raised strip 68 is provided with an opening groove 69 which is connected with the through line through hole 65 and faces to the inner side, so that one part of the through line through hole 65 is a lateral slotting through hole, and the other part of the through line through hole is a circumferential sealing through hole; the ribs 68 serve to guide and strengthen the wire itself and prevent the wire from twisting or bending during use, and from being deflected from the wound position.
Preferably, the positioning structure 67 includes a clamping step 70 disposed at the outer side of the positioning portion 66, where the positioning portion 66 is in an arc shape, preferably, the arc-shaped cross section of the positioning portion 66 and the arc-shaped cross section of the sheet 57 may form a concentric arc, so that the axis of the positioning portion 66 coincides with the axis of the sheet 57, stability of the whole winding seat 54 in use is improved, one side of the positioning portion 66 circumferentially extends into the accommodating space 58, so that the width of the opening of the accommodating space 58 is narrowed, and the clamping step 70 is clamped with the clamping groove 71 on the inner wall of the long handle housing 50.
Further, one end of the sheet 57 connected to the wire spool 55 is in an arc shape, and the sheet 57 is uniformly distributed in the circumferential direction, so that after the first power line 52, the second power line 53 and the control line 40 are wound, a larger heat dissipation space is provided, the problem that a large amount of heat generated by long-time operation causes line damage is avoided, and meanwhile, the first power line 52, the second power line 53 and the control line 40 can be prevented from interfering with vibration operation of the ultrasonic transducer. Preferably, the rear end of the strip-shaped space 60 is communicated with a notch 72 formed at the edge of the spool 55 and located between two circumferentially adjacent tabs 57.
Preferably, a tubular body 73 made of elastic material is arranged between the waveguide 4 and the inner tube 5, and a longitudinal opening 74 penetrating through two longitudinal ends of the tubular body 73 is arranged at the side part of the tubular body 73 so as to make the cross section of the tubular body 73 be C-shaped, wherein the inner diameter of the tubular body 73 is larger than the outer diameter of the waveguide 4, and the outer diameter of the tubular body 73 is smaller than the inner diameter of the inner tube 5.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims. Although terms are used more herein, the use of other terms is not precluded. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.
Claims (27)
1. The ultrasonic surgical instrument (1) comprises a gun type handle (3) and a waveguide (4), an inner tube (5) and an outer tube (6) which are arranged on the gun type handle (3), wherein the inner tube (5) is sleeved on the periphery of the waveguide (4), the outer tube (6) is sleeved on the periphery of the inner tube (5), the ultrasonic transduction device (2) comprises a long handle type shell (7) and an ultrasonic transduction device (2) penetrating through the long handle type shell (7), the ultrasonic transduction device (2) is arranged on the gun type handle (3) and connected with the waveguide (4), the ultrasonic transduction device is characterized in that the front end of the ultrasonic transduction device (2) is connected with the long handle type shell (7) through a floating support mechanism (8), the far end of the waveguide (4) is connected with the flexible support structure (5) through a sealing structure (9), a plurality of flexible node structures (10) are further arranged between the inner tube (4) and the waveguide (4) along the axial direction, the sealing soft support structure (9) and the node soft support structure (10) are both positioned at the node (11) of the waveguide (4) and the sealing soft support structure (9) is nearest to the far end of the waveguide (4), and the support rigidity of the sealing soft support structure (9) is greater than that of the node soft support structure (10);
The node soft supporting structure (10) comprises a node supporting ring (25), wherein an inner side of the node supporting ring (25) is provided with an inner side supporting structure (26) which can be in circumferential continuous contact or circumferential annular interval contact with the outer wall of the waveguide (4), and an outer side supporting structure (27) which can be in circumferential continuous contact or circumferential annular interval contact with the inner wall of the inner pipe (5) is arranged on the outer side of the node supporting ring (25);
the floating support mechanism (8) comprises a flange plate (31) arranged at the front end of an amplitude transformer (30) of the ultrasonic transduction device (2), a cylindrical rear support seat (32) is arranged on one surface of the flange plate (31) and the amplitude transformer (30) penetrates through the rear support seat (32), a cylindrical front support seat (33) is arranged on the other surface of the flange plate (31) and the amplitude transformer (30) penetrates through the front support seat (33), a front support gasket (34) made of flexible materials is arranged in the front support seat (33), one surface of the flange plate (31) faces the front support gasket (34) and abuts against the front support gasket (34), the front end of the rear support seat (32) enters into the front support seat (33), a rear support gasket (35) made of flexible materials is arranged between the front end of the rear support seat (32) and the flange plate (31), one surface of the flange plate (31) faces the rear support seat (35) and abuts against the rear support gasket (35), and the front end of the rear support seat (32) abuts against the rear support seat (35), and the front support gasket (33) and the front support gasket (35) are fixedly connected with the front support seat (33) and the rear support gasket (32).
2. The ultrasonic medical surgical instrument according to claim 1, wherein the sealing soft supporting structure (9) comprises a rigid supporting structure (12) arranged at the far end of the waveguide (4) and protruding outwards in the radial direction, a sealing supporting sleeve (13) is sleeved on the periphery of the rigid supporting structure (12), an inner side sealing structure (17) capable of forming a seal with the outer wall of the waveguide (4) when the sealing supporting sleeve (13) is arranged between the inner tube (5) and the waveguide (4) is arranged on the inner side of the sealing supporting sleeve (13), and an outer side sealing structure (14) capable of forming a seal with the inner wall of the inner tube (5) when the sealing supporting sleeve (13) is arranged between the inner tube (5) and the waveguide (4) is arranged on the outer side of the sealing supporting sleeve (13).
3. The ultrasonic medical surgical instrument according to claim 2, wherein the rigid supporting structure (12) comprises at least one rigid convex ring (15) protruding radially from the waveguide (4), the rigid convex ring (15) and the waveguide (4) are integrally formed, annular grooves (16) which are arranged in one-to-one correspondence with the rigid convex rings (15) are arranged on the inner side of the sealing supporting sleeve (13), and the rigid convex rings (15) are embedded in the annular grooves (16).
4. An ultrasonic medical surgical instrument according to claim 3, wherein the number of rigid collars (15) is one, the number of annular grooves (16) is one, the shape of the rigid collars (15) is adapted to the shape of the grooves of the annular grooves (16), and the outer surfaces of the rigid collars (15) are in close contact with the walls of the annular grooves (16) to form a part of the inner sealing structure (17).
5. Ultrasonic medical surgical instrument according to claim 4, characterized in that the cross section of the rigid collar (15) is isosceles trapezoid and the cross section of the annular groove (16) is isosceles trapezoid.
6. The ultrasonic medical surgical instrument according to claim 2 or 3 or 4 or 5, wherein the rigid support structure (12) is located in a central region of the sealing support sleeve (13), and wherein the deformation capacity of the sealing support sleeve (13) corresponding to the region of the rigid support structure (12) is smaller than the deformation capacity of the sealing support sleeve (13) corresponding to the region of the two sides of the rigid support structure (12).
7. The ultrasonic medical surgical instrument according to claim 6, wherein the inner sealing structure (17) comprises first annular sealing surfaces (18) respectively arranged at both sides of the rigid support structure (12), and the first annular sealing surfaces (18) are in close contact with the outer wall of the waveguide (4); the outer sealing structure (14) comprises a second annular sealing surface (19), and the second annular sealing surface (19) is tightly contacted with the inner wall of the inner tube (5).
8. The ultrasonic medical surgical instrument according to claim 7, wherein the outside of the sealing support sleeve (13) is further provided with a sealing reinforcement structure (20) capable of improving the sealing effect of the sealing support sleeve (13) and the inner wall of the inner tube (5) when the sealing support sleeve (13) is installed between the inner tube (5) and the waveguide (4).
9. The ultrasonic medical surgical instrument according to claim 8, wherein the seal reinforcement structure (20) comprises at least one sealing lip (21), the sealing lip (21) being located at an end of the seal support sleeve (13) remote from the distal end of the waveguide (4) and being capable of being in close contact with the inner wall of the inner tube (5), and an annular receiving groove (22) being provided between the outer sealing structure (14) and the sealing lip (21).
10. Ultrasonic medical surgical instrument according to claim 9, characterized in that the lip top (23) of the sealing lip (21) is higher than the outside sealing structure (14) in its natural state, and that the lip top (23) is pressed and deformed to form a face seal with the inner wall of the inner tube (5) when the sealing support sleeve (13) is located between the inner tube (5) and the waveguide (4).
11. Ultrasonic medical surgical instrument according to claim 1, characterized in that the outer support structure (27) comprises at least two radially outwardly extending outer support portions (28), the outer ends of the outer support portions (28) being respectively contactable with the inner wall of the inner tube (5) to form a support; or the outer support structure (27) comprises an outer support annulus located outside the nodal support ring (25).
12. The ultrasonic medical surgical instrument according to claim 11, wherein the outer support portions (28) are identical in shape and size and uniformly distributed in the circumferential direction, and each outer support portion (28) has a centripetal structure directed toward the central axis of the waveguide (4); the cross section of the outer supporting part (28) is isosceles trapezoid.
13. Ultrasonic medical surgical instrument according to claim 1, characterized in that the inner support structure (26) comprises an inner support ring surface (24) inside the node support ring (25); or the inner support structure (26) comprises at least two radially outwardly extending inner support parts, the outer ends of which can be in contact with the outer wall of the waveguide (4) respectively to form a support.
14. The ultrasonic medical surgical instrument according to claim 1, wherein the rear support washer (35) is cylindrical, an annular flange (36) is radially inward provided at an end of the rear support washer (35) facing the front end of the rear support seat (32), the flange (31) is located in the rear support washer (35) such that the outer edge of the flange (31) is surrounded by the rear support washer (35), a surface of the flange (31) facing the annular flange (36) abuts against a surface of the annular flange (36), and a front end of the rear support seat (32) abuts against another surface of the annular flange (36).
15. The ultrasonic medical surgical instrument according to claim 14, wherein a plurality of centripetally distributed accommodating grooves (37) are formed in one end of the rear supporting washer (35) facing the front end of the rear supporting seat (32), a plurality of protruding bodies (38) which are centripetally distributed and protrude out of the front end face of the rear supporting seat (32) are arranged at the front end of the rear supporting seat (32), the accommodating grooves (37) and the protruding bodies (38) are arranged in a one-to-one correspondence manner, the protruding bodies (38) are embedded in the accommodating grooves (37), and the front end face of the rear supporting seat (32) abuts against one face of the annular flanging (36).
16. The ultrasonic medical surgical instrument according to claim 15, wherein the receiving grooves (37) are located at the outer edge of the rear support washer (35) and are uniformly distributed in the circumferential direction; the convex bodies (38) are positioned at the outer edge of the front end of the rear supporting seat (32) and are uniformly distributed in the circumferential direction; the outer side wall of back supporting washer (35) be equipped with a plurality of and holding groove (37) one-to-one cross wire casing (39), cross wire casing (39) along back supporting washer (35) axial extension, one end of crossing wire casing (39) be linked together with holding groove (37), the other end extends to the other end of back supporting washer (35), and wears to be equipped with control line (40) in one of them cross wire casing (39).
17. The ultrasonic medical surgical instrument according to claim 16, wherein a first wire passing hole (41) is formed in the inner side of the front end of the rear supporting seat (32), a second wire passing hole (42) is formed in the inner side of the rear end of the front supporting seat (33), the first wire passing hole (41) and the second wire passing hole (42) are distributed in a splayed shape, and the control wire (40) passes through the first wire passing hole (41), the wire passing groove (39) and the second wire passing hole (42) so as to enter the front supporting seat (33) from the rear supporting seat (32) beyond the periphery of the flange plate (31).
18. The ultrasonic medical surgical instrument of claim 16 wherein the top of the boss (38) has a ramp (43) and the ramp (43) gradually rises radially from the outside to the inside along the rear support seat (32); the shape of the accommodating groove (37) is matched with the shape of the convex body (38).
19. The ultrasonic medical surgical instrument according to claim 16, wherein a plurality of positioning notches (44) are formed in one surface of the flange plate (31) facing the annular flange (36), a plurality of positioning convex blocks (45) are formed in one surface of the annular flange (36) facing the annular flange (36), the positioning notches (44) are in one-to-one correspondence with the positioning convex blocks (45), and the positioning convex blocks (45) are embedded in the positioning notches (44); the positioning notches (44) are positioned at the outer edge of the flange plate (31) and are uniformly distributed in the circumferential direction, and the positioning convex blocks (45) are positioned between the annular flanging (36) and the inner wall of the rear supporting gasket (35) and are uniformly distributed in the circumferential direction.
20. The ultrasonic medical surgical instrument according to claim 16, wherein an annular retainer ring (46) is provided in the front support seat (33), and one end of the rear support washer (35) away from the front end of the rear support seat (32) abuts against the annular retainer ring (46); an annular sinking groove (47) is formed in one surface, facing the rear supporting gasket (35), of the annular retainer ring (46), and the front supporting gasket (34) is arranged in the annular sinking groove (47).
21. The ultrasonic medical surgical instrument of claim 16 wherein the flange (31) is integrally formed with the horn (30) and the flange (31) is disposed at a node of the horn (30); the front support gasket (34) and the rear support gasket (35) are both made of elastic materials; the rear end of the front supporting seat (33) is fixedly sleeved with the front end of the rear supporting seat (32), and an annular sealing ring (48) is arranged at the sleeved position of the front supporting seat (33) and the rear supporting seat (32).
22. The ultrasonic surgical instrument according to any one of claims 16 to 21, wherein the rear end of the horn (30) is connected to the piezoelectric assembly (49), the wire inlet structure (51) at the rear end of the long handle housing (50) is provided with a first power wire (52), a second power wire (53) and the control wire (40), the piezoelectric assembly (49) is sleeved with a wire holder (54) fixed in the long handle housing (50), one end of the wire holder (54) is a wire spool (55), one surface of the wire spool (55) is provided with a wire winding structure (56), the other surface of the wire spool (55) is provided with a plurality of sheet-shaped bodies (57) with one end connected to the wire spool (55) and the other end extending in the same direction perpendicular to the plane of the wire spool (55), each sheet-shaped body (57) is distributed at intervals in the circumferential direction and surrounds to form a containing space (58), one end of the piezoelectric assembly (58) is provided with the wire spool (55) and the other end forms a wire winding seat (54) fixed in the long handle housing (50), one end of the wire spool (49) is provided with a wire winding structure (56), one end of the wire spool extends from the other end of the wire spool (55) into the containing space (58) to the adjacent sheet-shaped bodies (59) and extends from the wire spool (55) to the adjacent two sheet-shaped bodies (59) to the adjacent wire spool (59) to the wire spool (55) to the opening (60), the first power line (52) enters one of the strip-shaped intervals (60) through the winding structure (56) and is connected with the middle part of the piezoelectric assembly (49), the second power line (53) enters the other strip-shaped interval (60) through the winding structure (56) and is connected with the front part of the piezoelectric assembly (49), and the control line (40) axially extends forwards along the periphery of the piezoelectric assembly (49) through the winding structure (56).
23. The ultrasonic medical surgical instrument of claim 22, wherein the winding structure (56) comprises a plurality of strip-shaped bodies (61) with inner ends converging to the center of the wire spool (55) and outer ends radiating outwards, wire clamping bodies (62) which are suspended and extend sideways to the strip-shaped bodies (61) are arranged at the outer ends of the strip-shaped bodies (61), wire clamping openings (63) are formed between the end faces of the wire spool (55) and the lower parts of the wire clamping bodies (62), the number of the strip-shaped intervals (60) is equal to the number of the wire clamping openings (63), and the wire clamping openings (63) and the strip-shaped intervals (60) are respectively arranged in a circumferential dislocation mode.
24. The ultrasonic medical surgical instrument according to claim 23, wherein the first power cord (52) and the second power cord (53) respectively extend from a central region corresponding to the wire spool (55) to the corresponding strip-shaped interval (60) along one of the strip-shaped bodies (61) and laterally turn around the corresponding wire clamping opening (63), a wire passing through slot (64) extending from the edge of the wire spool (55) parallel to the strip-shaped interval (60) is arranged on one of the sheet-shaped bodies (57), a wire passing through hole (65) is arranged at the front end of the sheet-shaped body (57) provided with the wire passing through slot (64), the wire passing through slot (64) is arranged corresponding to the wire passing through hole (65), and the control cord (40) extends from the central region corresponding to the wire spool (55) to the wire passing through slot (64) along one of the strip-shaped bodies (61) and laterally turn around the corresponding wire clamping opening (63) and axially extends forward to the floating support mechanism (8) along the wire passing through slot (64) and the wire passing through hole (65).
25. The ultrasonic medical surgical instrument according to claim 24, wherein the front ends of the sheet-shaped bodies (57) are respectively provided with positioning parts (66) which extend obliquely outwards and then continue to extend along the same direction perpendicular to the plane of the wire spool (55), the outer sides of the positioning parts (66) are respectively provided with positioning structures (67), the inner sides of the positioning parts (66) corresponding to the front ends of the sheet-shaped bodies (57) provided with the wire passing through grooves (64) are provided with raised strips (68) protruding out of the inner walls of the positioning parts (66), and the wire passing through holes (65) are arranged in the raised strips (68); the inner end of the raised strip (68) is provided with an open groove (69) which is connected with the through line through hole (65) and faces to the inner side, so that one part of the through line through hole (65) is a lateral slotting through hole, and the other part of the through line through hole is a circumferential sealing through hole; the positioning structure (67) comprises a clamping step (70) arranged on the outer side of the positioning part (66), one side of the positioning part (66) circumferentially extends into the accommodating space (58) so as to narrow the width of the opening of the accommodating space (58), and the clamping step (70) is clamped with a clamping groove (71) on the inner wall of the long handle type shell (50).
26. The ultrasonic medical surgical instrument according to claim 25, wherein one end of the sheet body (57) connected with the wire spool (55) is arc-shaped sheet-like, and the sheet bodies (57) are uniformly distributed in the circumferential direction; the rear end of the strip-shaped interval (60) is communicated with a notch (72) which is arranged at the edge of the wire spool (55) and is positioned between two circumferentially adjacent sheet-shaped bodies (57).
27. Ultrasonic medical surgical instrument according to any one of claims 1-5, 11-21, characterized in that a tubular body (73) made of an elastic material is arranged between the waveguide (4) and the inner tube (5), that longitudinal openings (74) are provided through the longitudinal ends of the tubular body (73) at the sides of the tubular body (73) so that the cross section of the tubular body (73) is C-shaped, that the inner diameter of the tubular body (73) is larger than the outer diameter of the waveguide (4) and that the outer diameter of the tubular body (73) is smaller than the inner diameter of the inner tube (5).
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