CN116983079B - Radio frequency ultrasonic device - Google Patents
Radio frequency ultrasonic device Download PDFInfo
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- CN116983079B CN116983079B CN202311265461.7A CN202311265461A CN116983079B CN 116983079 B CN116983079 B CN 116983079B CN 202311265461 A CN202311265461 A CN 202311265461A CN 116983079 B CN116983079 B CN 116983079B
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- 238000002604 ultrasonography Methods 0.000 claims 3
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1442—Probes having pivoting end effectors, e.g. forceps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00059—Material properties
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00107—Coatings on the energy applicator
- A61B2018/0013—Coatings on the energy applicator non-sticking
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00107—Coatings on the energy applicator
- A61B2018/00136—Coatings on the energy applicator with polymer
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00589—Coagulation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1442—Probes having pivoting end effectors, e.g. forceps
- A61B2018/1462—Tweezers
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Otolaryngology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Plasma & Fusion (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The application relates to a radio frequency ultrasonic device which comprises a handle, a cutter tube, a cutter bar, a cutter head, metal forceps, a transducer and a radio frequency wire, wherein the transducer and the radio frequency wire are used for being connected with the cutter bar, a bending part is arranged at the far end of the metal forceps, a first bimetallic strip with working temperature being matched with the working temperature of the cutter head is arranged at the connecting part of the bending part and the metal forceps, the first bimetallic strip is electrically connected with the metal forceps, a first insulating layer is arranged on the periphery of the end part of the first bimetallic strip, which is close to the cutter head, and an active layer with a larger thermal expansion coefficient of the first bimetallic strip is arranged away from the handle. According to the application, the first bimetallic strip can realize the solidification and repair of the damaged large blood vessel in a three-side surrounding manner, the repair efficiency and quality are good, the wrapping effect on the large blood vessel is stronger after the first bimetallic strip is deformed by heating, the frequency of the moving and rotating of the cutter head can be obviously reduced, the original stiffness of the blood vessel can be ensured to a certain extent, and the rapid rehabilitation of the blood vessel is facilitated.
Description
Technical Field
The application relates to the technical field of medical surgical instruments, in particular to a radio frequency ultrasonic device.
Background
The ultrasonic technology is to generate thermal effect of mechanical vibration to break hydrogen bond of tissue protein, denature and solidify protein, and specifically to convert high frequency electric energy into mechanical vibration energy by using piezoelectric material or electromagnetic compression material through transducer, and to amplify and transfer the vibration energy to tool bit of tool bar, and to solidify, stop bleeding and cut tissue by using mechanical energy and heat energy generated by the transducer.
The radio frequency technology utilizes the thermal effect of high-frequency current (the frequency range is 200kHz-5 MHz) generated by a radio frequency generator to dehydrate, coagulate, fracture and separate tissues so as to achieve the purpose of operation. Both can coagulate and stop bleeding on a small range of target tissues.
The Chinese patent with publication number CN107260258A discloses a radio frequency ultrasonic tweezer, a knife tube is sleeved on a knife bar, the knife bar is provided with a hole, the knife bar and the knife tube are fixed in a plastic shell through a pin, the knife bar is connected with a transducer through a threaded connecting rod, a rotating shaft is arranged on the plastic shell, a corresponding hole is arranged on a metal tweezer, the metal tweezer is connected with the plastic shell, a sealing cover is sleeved at the front end of the plastic shell, a spring piece is adhered on the plastic shell, the metal tweezer is communicated with a three-core male plug through a wire, and then the metal tweezer is connected with a nerve monitoring host through a female plug and a host aviation plug. The application has the advantages of simple structure, convenient use, no smoke and eschar in operation, less heat damage to normal tissues, simultaneous coagulation and ligation of small blood vessels, and radiofrequency coagulation of large blood vessels.
The related art in the above has the following drawbacks: when repairing a large blood vessel by means of a radio frequency knife, platelets and cellulose in the large blood vessel are activated by using the energy of radio frequency waves to generate platelet aggregates and fibrinogen, and the substances form a layer of film on the inner surface of the large blood vessel so as to solidify into blood clots, thereby achieving the purpose of treatment; therefore, when repairing large blood vessels with large blood flow, especially when the damage range of the blood vessels is large, the radio frequency tool bit is often required to be rotated from time to time, so that the radio frequency tool bit and the metal forceps uniformly repair the circumferences of the large blood vessels, the possibility of secondary bursting of the blood vessels after operation is reduced, but in a limited minimally invasive environment, great inconvenience is brought to the operator in switching the radio frequency tool.
Disclosure of Invention
The application provides a radio frequency ultrasonic device in order to solve the problem that a rotating radio frequency forceps cannot be moved in a minimally invasive space when repairing a serious damaged large blood vessel.
The application provides a radio frequency ultrasonic device which adopts the following technical scheme:
the utility model provides a radio frequency ultrasonic device, includes handle, knife tube, cutter arbor, tool bit, metal tweezers and be used for with transducer and radio frequency line that the cutter arbor is connected, the distal end of metal tweezers is equipped with the portion of bending, the portion of bending with the junction department of metal tweezers installs operating temperature with the first bimetallic strip of tool bit during operation temperature adaptation, first bimetallic strip with metal tweezers electric connection, first bimetallic strip is close to the tip week side of tool bit is provided with first insulating layer, just the great initiative layer of first bimetallic strip thermal expansion coefficient deviates from the handle setting.
Further, a conductive polytetrafluoroethylene coating is arranged on one side of the first bimetallic strip, which faces away from the handle.
Further, the conductive polytetrafluoroethylene coating is prepared by uniformly mixing 50-70% of polytetrafluoroethylene powder and 30-50% of conductive powder according to the volume percentage to obtain a mixture, and the mixture is arranged on the first bimetallic strip in a hot-melt coating mode.
Still further, the conductive polytetrafluoroethylene coating is either full-width coated or multi-point spaced coated on the first bi-metallic strip passive layer.
Still further, the bending part deviates from the one end of metal tweezers installs operating temperature with the second bimetallic strip of tool bit during operation temperature adaptation, the second bimetallic strip is close to the tip week side of tool bit is provided with the second insulating layer, just the great initiative layer of second bimetallic strip thermal expansion coefficient deviates from the handle setting.
Further, a conductive polytetrafluoroethylene coating is arranged on the passive layer, close to the handle, of the second bimetallic strip.
Furthermore, the head end of the bending part is provided with a jack, an inserting block is connected in the jack in an interference inserting manner, and the second bimetallic strip is arranged on the inserting block; and when the plug block is completely inserted into the jack, the second bimetallic strip is electrically connected with the metal forceps.
Still further, slide and be provided with the sliding sleeve along its length direction on the metal forceps, sliding sleeve one end extends to the portion of gripping of metal forceps, the other end extends to bending portion department, first bimetallic strip fixed connection is in on the sliding sleeve, the sliding sleeve is close to the one end of metal forceps portion of gripping is provided with insulating part.
In summary, the beneficial technical effects of the application are as follows:
1. when the large blood vessel is coagulated and repaired, when the bending part and the tool bit on the metal forceps clamp the large blood vessel, the large blood vessel is in conductive communication with the bending part and the tool bit by means of the radio frequency wire, and meanwhile, the large blood vessel between the tool bit and the first bimetallic strip can also be in conductive communication with the large blood vessel and the tool bit, so that the three-side surrounding coagulation and repair of the damaged large blood vessel are realized, the single repair area of the large blood vessel is effectively increased, the repair efficiency is improved, the original stiffness of the blood vessel can be ensured to a certain extent, and the rapid recovery of the blood vessel is facilitated;
2. when a large blood vessel is coagulated, heat generated by the large blood vessel is transferred to the first bimetallic strip, the first bimetallic strip is bent and deformed in a direction away from the handle, so that the abutting degree between the first bimetallic strip and the large blood vessel can be improved, the contact area between the first bimetallic strip and the large blood vessel is further increased in a narrow space between the cutter head and the bending part, and the repairing efficiency is further improved, therefore, the frequency of the cutter head and the metal forceps which need to be moved and rotated can be obviously reduced, and the coagulation and repairing quality of the large blood vessel with serious damage can be promoted;
3. after the second bimetallic strip is further arranged, in some special vascular repairs, the solidification and repair quality and efficiency of the blood vessel can be improved by means of the four-way surrounding of the damaged blood vessel by the cutter head, the first bimetallic strip, the bending part and the second bimetallic strip; and the second bimetallic strip deforms in the direction away from the handle after being heated, so that a space can be avoided when the blood vessel bears the pressure of the three-way surrounding of the tool bit, the first bimetallic strip and the bending part, the possibility that the large blood vessel is extruded and burst forcedly is reduced, the contact area between the second bimetallic strip and the large blood vessel can be increased, and the stiffness of the large blood vessel in solidification and repair can be further improved.
Drawings
FIG. 1 is a cross-sectional view of the overall structure of a first embodiment of the present application;
FIG. 2 is an enlarged schematic view of a portion A of FIG. 1;
fig. 3 is a schematic structural diagram of a first bimetal sheet according to a first embodiment of the present application after being deformed by heat;
FIG. 4 is a schematic illustration of the arrangement of a multi-point conductive polytetrafluoroethylene coating according to a first embodiment of the application;
fig. 5 is a schematic diagram of the structure of a second embodiment of the present application when performing vascular repair.
Reference numerals illustrate: 11. a handle; 12. a cutter tube; 13. a cutter bar; 14. a cutter head; 15. a metal forceps; 16. a transducer; 17. a radio frequency line; 2. a bending part; 21. a jack; 3. a first bimetal; 31. a first insulating layer; 32. a conductive polytetrafluoroethylene coating; 4. a second bimetal; 41. a second insulating layer; 42. inserting blocks; 5. a sliding sleeve; 51. an insulating portion.
Detailed Description
The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the application are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Embodiment one:
the embodiment of the application discloses a radio frequency ultrasonic device. Referring to fig. 1 and 2, a radio frequency ultrasonic device comprises a handle 11, a cutter tube 12, a cutter bar 13, a cutter head 14, a metal forceps 15, a transducer 16 and a radio frequency wire 17, wherein the transducer 16 and the radio frequency wire 17 are used for being connected with the cutter bar 13, the cutter tube 12 is fixedly connected to the handle 11, the cutter bar 13 is arranged in the cutter tube 12 in a penetrating manner and is connected with the output end of the transducer 16, the cutter bar 13 is simultaneously hinged with the radio frequency wire 17, and the metal forceps 15 are hinged to the handle 11; the distal end of the metal forceps 15 is provided with a bending part 2 integrally formed with the metal forceps 15, and when the hand-held handle 11 presses the metal forceps 15, the straight section of the bending part 2 is abutted against the cutter head 14.
Referring to fig. 2 and 3, a first bimetal 3 with a working temperature adapted to the working temperature of the tool bit 14 is installed at the connection part of the bending part 2 and the metal forceps 15, the first bimetal 3 is electrically connected with the metal forceps 15, the first bimetal 3 is arranged along the bending direction of the bending part 2 and is directed towards the tool bit 14, and an active layer with a larger thermal expansion coefficient of the first bimetal 3 is arranged away from the handle 11, specifically, the first bimetal 3 can be a copper-iron bimetal, an aluminum-steel bimetal, a nickel-iron bimetal or a copper-steel bimetal; at the same time, the circumference of the end part of the first bimetallic strip 3, which is close to the cutter head 14, is provided with a first insulating layer 31, and the first insulating layer 31 is provided as an insulating sleeve sleeved at the free end of the first bimetallic strip 3.
After setting up like this, when solidifying the restoration to big blood vessel, the operator can hand handle 11 stretch into tool bit 14 and metal tweezers 15 and to the portion of performing the operation, when bending portion 2 and tool bit 14 on metal tweezers 15 carry out the centre gripping to big blood vessel, makes big blood vessel place between bending portion 2 and tool bit 14 and carries out electrically conductive intercommunication with the help of radio frequency line 17 to can solidify, restore the position that big blood vessel is close to tool bit 14 and bending portion 2.
In the process, the first bimetallic strip 3 is also electrically connected with the metal forceps 15, and the first insulating layer 31 is arranged between the first bimetallic strip 3 and the cutter head 14, so that the large blood vessel between the cutter head 14 and the first bimetallic strip 3 can be electrically connected with the first bimetallic strip 3, one side of the large blood vessel close to the first bimetallic strip 3 can be coagulated and repaired, three sides of the damaged large blood vessel are surrounded, the single repair area of the large blood vessel is effectively increased, and the repair efficiency is improved. In the traditional method, the metal forceps 15 and the cutter head 14 are closed to solidify and close the large blood vessel, so that on one hand, the time for transferring heat to the whole section of the blood vessel is long, and on the other hand, the extrusion of the metal forceps 15 and the cutter head 14 to the blood vessel can solidify and deform the blood vessel, so that the original stiffness of the blood vessel is not possessed, and the repairing after the blood vessel solidification is not facilitated. In contrast, the three-side surrounding type large-area repair method disclosed by the application has the advantages of uniform heat transfer, high efficiency, capability of ensuring the original stiffness of the blood vessel to a certain extent and contribution to the rapid recovery of the blood vessel.
And, when the big blood vessel solidifies, the heat that it produced is transmitted to first bimetallic strip 3, because the deformation volume of the active layer of first bimetallic strip 3 and passive layer thermal expansion is different, make first bimetallic strip 3 take place bending deformation towards the direction that deviates from handle 11, can improve the tight degree of supporting between first bimetallic strip 3 and the big blood vessel, and then improved the area of contact of first bimetallic strip 3 and big blood vessel in the narrow and small space of tool bit 14 and bending part 2, further improved repair efficiency, consequently can show the frequency that needs to move the rotation of tool bit 14 and metal tweezers 15 of the application, promote the solidification, repair quality to the serious big blood vessel of damage.
Further, referring to fig. 2, the side of the first bimetal 3 facing away from the handle 11 is provided with a conductive polytetrafluoroethylene coating 32; specifically, the conductive polytetrafluoroethylene coating 32 is a mixture obtained by uniformly mixing 50% -70% of polytetrafluoroethylene powder and 30% -50% of conductive powder according to the volume percentage, and is arranged on the first bimetallic strip 3 in a hot-melt coating mode. Wherein the conductive powder can be micron-sized metal powder, the metal powder is selected from one or more of silver, copper, gold, aluminum and iron, and the average particle size of the metal powder is less than 500 mu m; the conductive powder may be super conductive carbon black, composite carbon powder, graphite powder, etc., and when the conductive powder is selected from the group of inorganic powders, the doping ratio of the conductive powder in the conductive polytetrafluoroethylene coating 32 may be reduced.
After the conductive polytetrafluoroethylene coating 32 is arranged on the first bimetallic strip 3, on one hand, the first bimetallic strip 3 can still keep electrical connection with a large blood vessel, and the radio frequency solidification effect is ensured; on the other hand, as the friction coefficient of the polytetrafluoroethylene is extremely small and the surface tension is also lowest, the polytetrafluoroethylene has extremely high lubricity and high non-tackiness, so that the first bimetallic strip 3 can be effectively prevented from adhering to the blood vessel in the process of wrapping a large blood vessel and performing radio frequency solidification, and the stability in the process of operation is improved.
Specifically, considering that the first bimetal 3 may turn over and deform after being heated, the adhesion of the conductive polytetrafluoroethylene coating 32 may be affected, so that the thick bottom of the conductive polytetrafluoroethylene coating 32 is smaller, and the conductive polytetrafluoroethylene coating 32 is coated on the whole surface of the passive layer of the first bimetal 3, so that the bald probability of the conductive polytetrafluoroethylene coating 32 can be reduced to a certain extent.
Alternatively, referring to fig. 4, the conductive polytetrafluoroethylene coating 32 is applied to the first bimetal 3 at multiple points at intervals, and specific points may be dots, polygonal points, or the like, so that the gap between two adjacent points does not exceed the minimum outer diameter of a single point. In this way, the multi-point conductive polytetrafluoroethylene coating 32 is arranged, so that the anti-sticking performance can be ensured as much as possible, and the phenomenon that the first bimetallic strip 3 falls off after being deformed can be effectively avoided.
In addition, in order to further promote the enclosing effect of the first bimetal 3, the tool bit 14 and the bending portion 2, referring to fig. 1 and 3, a sliding sleeve 5 is slidably disposed on the metal forceps 15 along the length direction thereof, one end of the sliding sleeve 5 extends to the holding portion of the metal forceps 15, the other end extends to the bending portion 2, the first bimetal 3 is fixedly connected to the sliding sleeve 5, and an insulating portion 51 is disposed at one end of the sliding sleeve 5 adjacent to the holding portion of the metal forceps 15.
In this way, the degree of abutment between the first bimetal 3 and the large blood vessel can be changed by means of the sliding sleeve 5, and the sliding sleeve 5 can also be slid towards the direction close to the handle 11 during ultrasonic operation, so that the first bimetal 3 does not interfere with the ultrasonic cutting effect when the cutter head 14 and the bending section are closed.
The implementation principle of the radio frequency ultrasonic device of the embodiment of the application is as follows:
when the large blood vessel is coagulated and repaired, the bending part 2 on the metal forceps 15 and the cutter head 14 clamp the large blood vessel, the large blood vessel is in conductive communication between the bending part 2 and the cutter head 14 by means of the radio frequency wire 17, and meanwhile, the large blood vessel between the cutter head 14 and the first bimetallic strip 3 can also be in conductive communication with the large blood vessel, so that the three-side surrounding coagulation and repair of the damaged large blood vessel are realized, the single repair area of the large blood vessel is effectively increased, the repair efficiency is improved, the original stiffness of the blood vessel can be ensured to a certain extent, and the rapid recovery of the blood vessel is facilitated.
Moreover, when the large blood vessel is coagulated, the generated heat is transferred to the first bimetallic strip 3, the first bimetallic strip 3 is bent and deformed towards the direction away from the handle 11, the tight degree between the first bimetallic strip 3 and the large blood vessel can be improved, the contact area between the first bimetallic strip 3 and the large blood vessel is further increased in the narrow space between the cutter head 14 and the bending part 2, and the repair efficiency is further improved, so that the frequency of the rotation of the cutter head 14 and the metal forceps 15 can be obviously reduced, and the coagulation and repair quality of the large blood vessel with serious damage can be promoted.
Embodiment two:
the embodiment of the application discloses a radio frequency ultrasonic device, referring to fig. 5, which is different from the first embodiment in that:
the second bimetallic strip 4 with the working temperature matched with the working temperature of the cutter head 14 is arranged at one end of the bending part 2, which is away from the metal forceps 15, the end part of the free end of the second bimetallic strip 4, which is positioned towards the cutter head 14, is provided with a second insulating layer 41 on the periphery of the end part of the second bimetallic strip 4, which is close to the cutter head 14, and an active layer with a larger thermal expansion coefficient of the second bimetallic strip 4 is arranged away from the handle 11, and likewise, a conductive polytetrafluoroethylene coating 32 is arranged on a passive layer of the second bimetallic strip 4, which is close to the handle 11. The materials of the second bimetal 4, the second insulating layer 41 and the conductive polytetrafluoroethylene coating 32 are substantially the same as those of the first bimetal 3, the first insulating layer 31 and the conductive polytetrafluoroethylene coating 32 in the first embodiment, and will not be described herein.
Meanwhile, according to different operation requirements, the second bimetallic strip 4 can be flexibly arranged, specifically, a jack 21 is formed at the head end of the bending part 2, an inserting block 42 is connected in the jack 21 in an interference inserting manner, and the second bimetallic strip 4 is arranged on the inserting block 42; after the insertion block 42 is completely inserted into the insertion hole 21, the second bimetal 4 is electrically connected with the metal forceps 15.
After the arrangement, the second bimetallic strip 4 can solidify and repair the blood vessel between the second bimetallic strip 4 and the cutter head 14 under the action of the second insulating layer 41, and in some special blood vessel repair, the four-way surrounding of the damaged blood vessel by the cutter head 14, the first bimetallic strip 3, the bending part 2 and the second bimetallic strip 4 can further improve the solidification and repair quality and efficiency of the blood vessel; and the second bimetallic strip 4 deforms in a direction away from the handle 11 after being heated, so that a blood vessel can have an avoidance space when bearing the pressure of the three-way surrounding of the cutter head 14, the first bimetallic strip 3 and the bending part 2, the possibility that a large blood vessel is extruded and burst forcedly is reduced, the contact area between the second bimetallic strip 4 and the large blood vessel can be increased, and the stiffness of the large blood vessel in solidification and repair is further improved.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," "third," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. The terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. "upper", "lower", "left", "right", etc. are used merely to denote relative positional relationships, which may also change accordingly when the absolute position of the object to be described changes.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (8)
1. The utility model provides a radio frequency ultrasonic device, includes handle (11), knife tube (12), cutter arbor (13), tool bit (14), metal tweezers (15) and be used for with transducer (16) and radio frequency line (17) that cutter arbor (13) are connected, a serial communication port, the distal end of metal tweezers (15) is equipped with bend portion (2), bend portion (2) with the junction department of metal tweezers (15) installs operating temperature with first bimetallic strip (3) of tool bit (14) during operation temperature adaptation, first bimetallic strip (3) with metal tweezers (15) electric connection, first bimetallic strip (3) are close to tip week side of tool bit (14) is provided with first insulating layer (31), just the great initiative layer of thermal expansion coefficient of first bimetallic strip (3) deviates from handle (11) setting.
2. A radio frequency ultrasound device according to claim 1, characterised in that the side of the first bimetal (3) facing away from the handle (11) is provided with a conductive polytetrafluoroethylene coating (32).
3. A radio frequency ultrasonic device according to claim 2, characterized in that the conductive polytetrafluoroethylene coating (32) is a mixture obtained by uniformly mixing 50-70% of polytetrafluoroethylene powder and 30-50% of conductive powder by volume percentage and is arranged on the first bimetallic strip (3) in a hot-melt coating mode.
4. A radio frequency ultrasound device according to claim 3, characterised in that the electrically conductive polytetrafluoroethylene coating (32) is applied over the passive layer of the first bimetallic strip (3) either full-width-wise or multi-point spaced-apart.
5. A radio frequency ultrasonic device according to any one of claims 1-4, characterized in that one end of the bending part (2) deviating from the metal forceps (15) is provided with a second bimetallic strip (4) with working temperature adapted to the working temperature of the cutter head (14), the periphery of the end part of the second bimetallic strip (4) close to the cutter head (14) is provided with a second insulating layer (41), and an active layer with a larger thermal expansion coefficient of the second bimetallic strip (4) is arranged deviating from the handle (11).
6. A radio frequency ultrasound device according to claim 5, characterised in that the second bimetal (4) is provided with a conductive polytetrafluoroethylene coating (32) on the passive layer adjacent to the handle (11).
7. The radio frequency ultrasonic device according to claim 5, wherein the head end of the bending part (2) is provided with a jack (21), an insertion block (42) is connected in an interference insertion manner in the jack (21), and the second bimetallic strip (4) is installed on the insertion block (42); after the insertion block (42) is completely inserted into the insertion hole (21), the second bimetallic strip (4) is electrically connected with the metal forceps (15).
8. The radio frequency ultrasonic device according to claim 1, wherein a sliding sleeve (5) is slidably arranged on the metal forceps (15) along the length direction of the metal forceps, one end of the sliding sleeve (5) extends to a holding part of the metal forceps (15), the other end of the sliding sleeve extends to the bending part (2), the first bimetallic strip (3) is fixedly connected to the sliding sleeve (5), and an insulating part (51) is arranged at one end, close to the holding part of the metal forceps (15), of the sliding sleeve (5).
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| CN202311265461.7A CN116983079B (en) | 2023-09-28 | 2023-09-28 | Radio frequency ultrasonic device |
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| US20030171747A1 (en) * | 1999-01-25 | 2003-09-11 | Olympus Optical Co., Ltd. | Medical treatment instrument |
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| AU4716500A (en) * | 1995-12-29 | 2000-10-19 | Medical Scientific, Inc. | Apparatus and method for electrosurgery |
| CN205548674U (en) * | 2016-03-25 | 2016-09-07 | 陈晓红 | Bipolar coagulation of wicresoft tweezers |
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