CN216365187U - Ultrasonic surgical operation instrument - Google Patents

Abstract

The utility model discloses an ultrasonic surgical instrument with a simple sleeve assembly, which comprises an ultrasonic knife bar used for transmitting ultrasonic mechanical energy, wherein the sleeve assembly is sleeved outside the ultrasonic knife bar, a clamp is arranged at the far end of the sleeve assembly, and a handle part is arranged at the near end of the sleeve assembly. The sleeve assembly is of an integral structure and is connected to the handle portion through a connecting mechanism. The instrument has the advantages that the integral sleeve assembly can reduce the assembly process, simplify the installation structure, reduce the complex structure, generally reduce the cost for manufacturing the instrument and lighten the burden of a patient.

Description

Ultrasonic surgical operation instrument

Technical Field

The utility model relates to the field of surgical medical instruments, is applied to surgical instruments, and particularly relates to an ultrasonic surgical instrument.

Background

With the popularization of minimally invasive surgery, an ultrasonic surgical knife has become a conventional surgical instrument. The ultrasonic scalpel mechanically oscillates the scalpel head at a certain ultrasonic frequency through the ultrasonic frequency generator, so that water molecules in tissues are vaporized, protein hydrogen bonds are broken, cells are disintegrated, the tissues are cut or solidified, and blood vessels can be closed. The ultrasonic surgical blade accomplishes both tissue cutting and coagulation simultaneously with less lateral thermal damage. Ultrasonic surgical blades have become increasingly popular because they allow for lesion excision at lower temperatures and with less bleeding, and ensure minimal lateral thermal tissue damage.

The ultrasonic scalpel mainly comprises an ultrasonic frequency generator, a transducer and a surgical instrument. The ultrasonic frequency generator sends out an oscillating electric signal, the transducer converts the oscillating electric signal into mechanical vibration, and the surgical instrument cuts and coagulates the tissues by utilizing the mechanical vibration of the transducer. The surgical instrument generally comprises a shaft, a clamp forming a holding structure with the cutting head, a sleeve assembly surrounding the shaft, and a handle portion. The cutter bar transmits the mechanical vibration of the transducer to the cutter head; the cutter head and the clamp are matched to clamp tissues to realize cutting and blood coagulation functions; the sleeve assembly is composed of an outer sleeve and an inner sleeve, the cutter bar is positioned in the inner sleeve, on one hand, the sleeve assembly isolates the cutter bar from the outside to play a role in protecting and supporting the cutter bar, on the other hand, the sleeve assembly and the clamp form a connecting rod mechanism which can drive the clamp to close and open; the handle part is held by the doctor hand part, can operate the clamp to open and close, and has a switch capable of controlling the ultrasonic frequency generator to start or stop outputting the oscillating electric signal.

CN201220588716.4(CN202908803U) discloses a disposable ultrasonic scalpel, which comprises a scalpel head and a scalpel rod, wherein the scalpel head comprises a scalpel head inner tube, a scalpel head outer tube and a scalpel head body; the cutter bar comprises a cutter bar inner pipe, a cutter bar outer pipe and a cutter bar body; the inner tube, the outer tube and the body of the cutter head and the cutter bar are respectively connected into a whole through a dismounting type. The utility model discloses an ultrasonic scalpel tool bit can only disposable, and use cost is high.

CN201921215696.4(CN211187447U) discloses a scissors-type integrated ultrasonic surgical knife and surgical instrument. This formula integral type ultrasonic surgical knife utensil of cutting includes the ultrasonic drive pole and cuts the formula handle, and wherein, the ultrasonic drive pole includes cutter arbor and ultrasonic transducer, cuts the formula handle and includes first hand (hold) and second hand (hold), and the ultrasonic drive pole is non-detachably set up on first hand (hold), and the ultrasonic drive pole includes limit structure, and limit structure is located the inside of first hand (hold) for restrict the removal of ultrasonic drive pole. The utility model of the ultrasonic surgical knife is also a disposable sterile appliance which is made integrally and can not be used for a plurality of times.

CN201810130712.3 discloses a reusable ultrasonic scalpel, which comprises a cutter, a cutter bar assembly and a functional assembly; the cutter, the cutter bar component and the functional component are connected in sequence; the cutter bar assembly comprises a cutter bar, an inner sleeve and an outer sleeve which are sleeved on the cutter bar in sequence from inside to outside; the inner sleeve is divided into a forceps head end inner sleeve and a rotating handle end inner sleeve, and the outer sleeve is divided into a forceps head end outer sleeve and a rotating handle end outer sleeve; the clamp is characterized in that the clamp head end inner sleeve and the rotating handle end inner sleeve are connected in a clamped mode through an L-shaped clamping structure, and the clamp head end outer sleeve and the rotating handle end outer sleeve are connected in a clamped mode through an L-shaped clamping structure.

CN201810871843.7(CN109009330A) discloses an ultrasonic scalpel, which comprises an outer shell, the cutter bar assembly and the sleeve unit that pass the outer shell, trigger assembly with sleeve unit swing joint, the cutter bar assembly includes core cutter bar unit and handle unit, the sleeve unit includes the outer tube, interior sleeve pipe, two interior cover shells that set up relatively, outer cover shell, rotation operation spare and fixing device, be equipped with axial stop device between interior cover shell and the interior sleeve pipe, fixing device sets up between outer tube and rotation operation spare, the round pin axle unit is arranged in first bar groove and the interior sheathed tube third bar groove of outer tube.

CN201811114966.2(CN108969058A) discloses a repeatedly usable's ultrasonic scalpel, which comprises an outer shell, a handle, the cutter arbor subassembly, universal wheel and moving mechanism, the cutter arbor subassembly passes the shell, the handle part is arranged in the shell and is connected with the cutter arbor subassembly, the universal wheel cover is located on the cutter arbor subassembly, the cutter arbor subassembly includes the core cutter pole, interior sleeve pipe and outer tube, the core cutter pole passes interior sleeve pipe, interior sheathed tube outside is located to the outer tube cover, the core cutter pole is upwards fixed with the handle, radially through pivot and outer tube spacing connection, moving mechanism is arranged in the shell and with interior bushing, the universal wheel is equipped with the breach towards the one end of outer tube, be equipped with the silica gel stopper in the breach, the clearance notch has been seted up on the connecting portion, the silica gel stopper is used for sealing the clearance notch.

CN201910752035.3(CN110448357A) discloses a reusable ultrasonic scalpel, which comprises a handle assembly and an ultrasonic knife bar (4) extending from the distal end of the handle assembly and used for transmitting ultrasonic mechanical energy, and is characterized in that a sleeve assembly (1) is sleeved outside the ultrasonic knife bar (4), and the sleeve assembly (1) is detachably connected to the handle assembly through a quick-connection mechanism.

The cutter bar component designed by the existing ultrasonic scalpel is complex in structure, high in manufacturing cost and inconvenient to assemble, the implementation and assembly of the inner/outer sleeve can be realized only by processes of expanding tubes, rotating grooves and the like, the cost is high, and the inner/outer sleeve is complex in structure, high in cost and low in processing efficiency.

As shown in fig. 8: the sealing between the inner cannula and the outer cannula of the existing ultrasonic scalpel is generally realized by making an expanding groove structure, wherein the ultrasonic scalpel shown in fig. 8 comprises an outer cannula assembly 21 ', an inner cannula assembly 22', a dial wheel outer ring 23 'and a sealing ring 24', the dial wheel outer ring 23 ', the outer cannula assembly 21' and the inner cannula assembly 22 'form a successive sleeving structure from outside to inside, the sealing ring 24' is positioned between an outer cannula body 211 'of the outer cannula assembly 21' and an inner cannula body 221 'of the inner cannula assembly 22', wherein both the outer cannula body 211 'of the outer cannula assembly 21' and the inner cannula body 221 'of the inner cannula assembly 22' have complex concave-convex structures, and the sealing between the inner cannula and the outer cannula is realized through the complex concave-convex structures; that is, the sleeve must be formed into a special configuration to realize sealing by making an expanding groove structure, so that the sleeve has a complex structure, a complex processing technology and high cost.

Accordingly, there is a need in the art for an ultrasonic surgical instrument (ultrasonic scalpel) that eliminates or at least alleviates all or some of the above-mentioned deficiencies in the prior art.

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a reusable ultrasonic surgical instrument with simple assembly, which is simplified in overall structure, and which can be used at a low cost.

Meanwhile, the assembly procedures can be reduced through the integral forming process, the components obtained through the integral forming process (co-injection) have strong integrity, the sealing between the inner sleeve and the outer sleeve can be realized without the need of matching through designing a complex configuration structure (such as an expanding groove structure) of the sleeve, the expanding groove structure of the sleeve part can be cancelled or simplified, the overall performance of the ultrasonic surgical instrument is greatly improved, and the ultrasonic surgical instrument can be applied to surgical scenes with higher fineness.

It is emphasized that, unless otherwise indicated, the terms used herein correspond to the ordinary meanings of the various technical and scientific terms in the art, and the meanings of the technical terms defined in the various technical dictionaries, textbooks, etc.

In this context, when expressing orientation, it is common to refer to the instrument operator as being relatively close to the instrument operator as the "proximal end" and relatively far from the instrument operator as the "distal end". Further, the longitudinal direction of the ultrasonic surgical blade may be referred to herein as the axial direction.

According to an aspect of the present invention, an ultrasonic surgical instrument is provided, which includes a knife bar 1, a clamp 3, a cannula assembly 2 and a handle portion 4, wherein a distal end of the knife bar 1 has a cutting head structure, the clamp 3 and the cutting head at the distal end of the knife bar 1 form a clamping structure, the knife bar 1 is an ultrasonic knife bar for transmitting ultrasonic energy, the cannula assembly 2 is sleeved outside the knife bar 1, the clamp 3 is disposed at a distal end portion of the cannula assembly 2, and the handle portion 4 is disposed at a proximal end portion of the cannula assembly 2; the sleeve assembly 2 comprises an outer sleeve assembly 21 and an inner sleeve assembly 22, wherein the outer sleeve assembly 21 and the inner sleeve assembly 22 are both of an integral structure (an integral structure) and are connected to the handle part 4 through a connecting mechanism.

The ultrasonic surgical instrument adopts the integral sleeve assembly, and the sleeve assembly 2 is not internally provided with (cancelled) bulging structures, so that the ultrasonic surgical instrument has the advantages of simple structure, simple and convenient assembly and low cost.

Further, the outer sleeve component 21 and the inner sleeve component 22 are sleeved, the inner sleeve component 22 is located between the cutter bar 1 and the outer sleeve component 21, the outer sleeve component 21 provided by the utility model is sleeved outside the inner sleeve component 22, the inner sleeve is driven to move through the transmission component of the handle part 4, the driving wheel outer ring of the handle part 4 is rotated to rotate circumferentially, the transmission component drives the inner sleeve component 22, the cutter bar 1 and the clamp 3 to rotate, and therefore the clamp 3 is opened or closed, and the clamp 3 and the cutter head at the farthest tail end of the cutter bar 1 form a separated state or a closed state.

Further, the outer sleeve assembly 21 includes an outer sleeve body 211 and an outer sleeve base 212, and the outer sleeve body 211 and the outer sleeve base 212 are formed as a whole through a co-injection molding process, or are assembled as a whole through a gluing process or a welding process.

Further, the inner sleeve assembly 22 includes an inner sleeve body 221 and an inner sleeve base body 222, and the inner sleeve body 221 and the inner sleeve base body 222 are formed into a whole through a co-injection integral molding process, or are assembled into a whole through a gluing process or a welding process.

Further, the ultrasonic surgical instrument further comprises a dial wheel outer ring 23, and the dial wheel outer ring 23 is sleeved outside the outer sleeve component 21.

Further, be equipped with first buckle boss 213 and rib 214 on the outer tube subassembly 21, be equipped with second buckle boss 231 and recess 232 on the thumb wheel outer lane 23, rib 214 of outer tube subassembly 21 with the recess 232 cooperation of thumb wheel outer lane 23, first buckle boss 213 of outer tube subassembly 21 with the second buckle boss 231 cooperation of thumb wheel outer lane 23, outer tube subassembly 2 with the assembly of thumb wheel outer lane 23.

Further, the number of the first bayonet bosses 213 is 1 or more, and the number of the ribs 214 is 1 or more; preferably two each, symmetrically distributed over the circumference.

Further, the ultrasonic surgical instrument includes a sealing ring 24, wherein the sealing ring 24 is located between the outer cannula assembly 21 and the inner cannula assembly 22, and the sealing ring 24 is preferably located between the outer cannula base 211 of the outer cannula assembly 21 and the inner cannula base 221 of the inner cannula assembly 22. The sealing ring 24 seals the gap between the outer sleeve 21 and the inner sleeve 22, and prevents fine tissues or blood from entering the cavity through capillary action.

Further, the thumb wheel outer ring 23 is coaxially mounted with the outer sleeve assembly 21. The sleeve assembly 2, the cutter bar 1 and the clamp 3 are driven to rotate by rotating the circumferential direction of the outer ring of the dial wheel, so that a doctor in an operation can conveniently adjust a proper cutting and blood coagulation angle.

Further, when the thumb wheel outer ring 23 and the outer sleeve assembly 21 are mounted, the ribs 214 and the first fastening bosses 213 on the outer sleeve assembly 21 respectively enter the grooves 232 and the second fastening bosses 231 of the thumb wheel outer ring 23, so that the thumb wheel outer ring 23 cannot be pulled out of the outer sleeve assembly 21 at the distal end.

Preferably, the rib 214 on the outer sleeve assembly 2 first enters the groove 232 of the dial wheel outer ring 23 to determine the assembling position, and then the first snap boss 213 on the outer sleeve assembly 2 is engaged with the second snap boss 231 of the dial wheel outer ring 23.

Further, the outer sleeve component 21 is provided with a connecting ring groove for connecting with the handle portion 4.

The ultrasonic surgical instrument provided according to the embodiment of the utility model has the following beneficial effects:

1. the sleeve assembly is formed by a co-injection technique, a welding process or a gluing process, and is further processed and assembled to obtain the ultrasonic surgical instrument, so that the assembly procedures can be reduced.

2. The parts manufactured by co-injection, welding or gluing have strong integrity, the sealing between the inner sleeve and the outer sleeve can be realized without designing a complex structure of the sleeve, the bulging structure of the sleeve part can be cancelled or simplified, the overall structure is simplified, and the performance is optimized.

3. The ultrasonic surgical instrument of the utility model adopts an integral sleeve assembly, and the manufacturing cost is reduced.

4. The surgical ultrasonic surgical instrument has the advantages of simple structure, convenient assembly, easy disassembly and assembly, and easy cleaning and disinfection.

5. A sealing structure is arranged between the inner sleeve assembly and the outer sleeve assembly, so that fine tissues or blood generated in an operation can be prevented from entering the handle part to cause pollution.

6. The ultrasonic surgical instrument of the present invention can be used in a more fine-grained surgical scene.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a generally schematic view of an ultrasonic surgical instrument according to the present invention.

Fig. 2 is an exploded view of the tube assembly of the present invention.

Fig. 3 is a schematic view of the installation of the ferrule assembly of the present invention.

FIG. 4 is a schematic view of the outer ring structure of the thumb wheel of the present invention.

FIG. 5 is a schematic view of an outer sleeve assembly of the present invention.

Figure 6 is a schematic view of an inner cannula assembly of the present invention.

Figure 7 is a schematic view of the present invention with the bushing in place.

Fig. 8 is a schematic diagram of the prior art.

The reference numbers referred to therein are as follows: the tool holder 1, the sleeve assembly 2, the clamp 3, the handle 4, the outer sleeve assembly 21, the inner sleeve assembly 22, the thumb wheel outer ring 23, the sealing ring 24, the outer sleeve body 211, the outer sleeve base body 212, the first clamping boss 213, the rib 214, the outer sleeve ring groove 215, the inner sleeve body 221, the inner sleeve base body 222, the second clamping boss 231, the groove 232, the outer sleeve assembly 21 ', the inner sleeve assembly 22', the thumb wheel outer ring 23 ', the sealing ring 24', the outer sleeve body 211 ', and the outer sleeve base body 212'.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

The technical scheme provided by the embodiment of the utility model is described in detail below with reference to the accompanying drawings.

Referring to fig. 1, an ultrasonic surgical instrument according to an embodiment of the present invention is shown, and generally comprises a knife bar 1, a clamp 3, a sleeve assembly 2 and a handle portion 4, wherein the distal end of the knife bar 1 has a knife head structure, the clamp 3 and the knife head of the distal end of the knife bar 1 form a clamping structure, and the sleeve assembly 2 is enclosed outside the knife bar 1.

The cutter bar 1 is an ultrasonic cutter bar for transmitting ultrasonic energy, the sleeve assembly 2 is sleeved outside the cutter bar 1, the clamp 3 is arranged at the distal end part of the sleeve assembly 2, and the handle part 4 is arranged at the proximal end part of the sleeve assembly 2; wherein the sleeve assembly 2 is of an integral structure and is connected to the handle portion 4 by a connection mechanism.

During operation, the handle part 4 is held by the hand of a doctor, the clamp 3 can be operated to open and close, and the switch can control the ultrasonic frequency generator to start or stop outputting the oscillating electric signal. The oscillating electric signal is converted into mechanical vibration by the energy converter, and the mechanical vibration of the energy converter is transmitted to the cutter head by the cutter bar 1. The cutter head and the clamp 3 are matched to clamp tissues and carry out ultrasonic cutting and hemostasis on the clamped tissues.

The sleeve assembly 2 separates the cutter bar 1 from the outside to protect the cutter bar, and forms a link mechanism with the clamp 3 at the far end of the sleeve assembly to drive the clamp 3 to close and open.

Referring now to fig. 2, there is shown an exploded view of a sleeve assembly of the ultrasonic surgical instrument of the present invention, wherein the sleeve assembly 2 includes an outer sleeve assembly 21 and an inner sleeve assembly 22.

The outer sleeve component 21, the inner sleeve component 22 and the cutter bar 1 are coaxially arranged, the inner sleeve component 22 is positioned between the outer sleeve component 21 and the cutter bar 1, and the outer sleeve component 21, the inner sleeve component 22 and the cutter bar 1 form a structural sequence from outside to inside.

FIG. 3 further illustrates a schematic view of the mounting of the cannula assembly 2 of the ultrasonic surgical instrument of the present invention, with the inner cannula assembly 22 mounted coaxially with the outer cannula assembly 21, with the inner cannula assembly 22 inserted distally into the proximal end of the outer cannula assembly; then, the thumb wheel outer ring 23 is also coaxially mounted with the outer sleeve component 21, specifically: the outer ring of the thumb wheel is sleeved on the outer sleeve from the far end.

The outer sleeve component 21 is integrally assembled by an outer sleeve body 211 and an outer sleeve base body 212 through a co-injection integral forming process, a welding process or a gluing process, wherein the outer sleeve base body 212 connected with the outer sleeve body 211 is formed on the outer sleeve body 211 through the co-injection integral forming process to form the integral outer sleeve component 21, or the outer sleeve body 211 and the outer sleeve base body 212 are assembled into the integral outer sleeve component 21 through the welding process or the gluing process; the inner sleeve assembly 22 is integrally assembled by the inner sleeve body 221 and the inner sleeve base body 222 through a co-injection integral molding process, a welding process or a gluing process. The inner sleeve body 221 is formed with an inner sleeve base 222 connected to the outer sleeve body 221 by a co-injection integral molding process to form an integral inner sleeve assembly 22, or the inner sleeve body 221 and the inner sleeve base 222 are assembled into the integral inner sleeve assembly 22 by a welding process or a gluing process.

The assembled sleeve assembly 2 is mounted on the handle portion 4, then the inner sleeve of the sleeve assembly is driven to move through the transmission assembly in the handle portion 4, and the clamp 3 and the cutter bar 1 are closed or opened through the relative movement between the inner sleeve assembly 22 and the outer sleeve assembly 21.

And the rotation of driving sleeve pipe subassembly, cutter arbor, clamp is realized to the circumferential direction of rotating the thumb wheel outer lane, makes things convenient for the doctor to adjust suitable cutting and blood coagulation angle.

In a preferred embodiment, as shown in FIG. 5, the outer sleeve assembly 21 is comprised of an outer sleeve body 211 and an outer sleeve base 212, the outer sleeve body 211 and the outer sleeve base 212 being assembled as a unitary structure.

Alternatively, the outer sleeve body 211 and the outer sleeve base 212 may be integrally formed by co-injection molding. The integrated structure formed by the co-injection molding technology has no connecting gap, and is high in integrity and convenient to use.

A further alternative process is to integrally form the outer sleeve body 211 and the outer sleeve base 212 by means of welding or gluing. The outer sleeve assembly formed by the connection modes also has the advantages of strong integrity and convenient use.

In order to facilitate the assembly with the outer ring of the thumb wheel, the outer sleeve component 21 is provided with a first snap boss 213 and a rib 214. The number of the first snap bosses 213 and the number of the ribs 214 may be the same or different. The first snap bosses 213 and the ribs 214 may be distributed at 1 number on the circumference, or distributed at a plurality of numbers uniformly or non-uniformly. Preferably, two of the first and second members are symmetrically arranged around the circumference, which is advantageous in that the mounting is easy.

Correspondingly, as shown in fig. 4, the thumb wheel outer ring 23 is provided with a second snap boss 231 and a groove 232. The number of the second catching projections 231 and the grooves 232 may be the same or different. The number of the second catching projections 231 and the grooves 232 may be 1, or a plurality of the second catching projections and the grooves may be uniformly or non-uniformly distributed on the circumference. Preferably, two of the first and second members are symmetrically arranged around the circumference, which is advantageous in that the mounting is easy.

When the thumb wheel outer ring 23 and the outer sleeve assembly 21 are installed, the ribs 214 and the first snap bosses 213 on the outer sleeve assembly 21 enter the grooves 232 and the second snap bosses 231 of the thumb wheel outer ring, respectively. The fixing of the mutual position of the thumb wheel outer race 23 and the outer sleeve assembly 21 is achieved by the mutual engagement action of the first engagement boss 213 and the second engagement boss 232.

Preferably, when the thumb wheel outer ring 23 and the outer sleeve component 21 are installed, the rib 214 on the outer sleeve component firstly enters the groove 232 of the thumb wheel outer ring 23 to determine the assembly position, then the first fastening boss 213 on the outer sleeve component 21 is matched with the second fastening boss 231 of the thumb wheel outer ring 23, and the fixing of the mutual position of the thumb wheel outer ring 23 and the outer sleeve component 21 is realized through the mutual fastening effect of the first fastening boss 213 and the second fastening boss 232.

In a preferred embodiment, as shown in fig. 6, the inner sleeve assembly 22 is comprised of an inner sleeve body 221 and a base 222, the inner sleeve body 221 and the base 222 being assembled as a unitary structure.

Alternatively, the inner sleeve body 221 and the base body 222 are integrally formed by a co-injection technique. The integrated structure formed by the co-injection technology has no connecting gap, and is high in integrity and convenient to use.

A further alternative process is to integrally form the inner sleeve body 221 and the base body 222 by welding or gluing. The outer sleeve assembly formed by the fixed connection modes also has the advantages of strong integrity and convenient use.

In a preferred embodiment, a sealing structure is provided between the base 231 of the outer cannula assembly 23 and the base 221 of the inner cannula assembly 22 to prevent fine tissue or blood generated during surgery from entering the handle portion, contaminating the handle portion so that it cannot be reused.

Specifically, a sealing ring 24 can be arranged between the base 231 of the outer sleeve assembly 23 and the base 221 of the inner sleeve assembly 22, and the sealing ring 24 can seal a gap between the base 231 of the outer sleeve assembly and the base 221 of the inner sleeve assembly, so that fine tissues or blood are prevented from entering the cavity through capillary action, and the handle part is prevented from being polluted.

Fig. 7 is a schematic view of the ultrasonic surgical instrument of the present invention after installation, in which the inner cannula assembly 22 is coaxially assembled with the outer cannula assembly 21, and the thumb wheel outer ring 23 is coaxially installed outside the outer cannula assembly 21, and the specific installation process includes:

step A: assembling the outer sleeve body and the outer sleeve substrate into an integral outer sleeve assembly through a co-injection integral forming process, a welding process or a gluing process; wherein, the outer sleeve body is formed with an outer sleeve basal body connected with the outer sleeve body by a co-injection integral forming process to form an integral outer sleeve component, or the outer sleeve body and the outer sleeve basal body are assembled into the integral outer sleeve component by a welding process or a gluing process;

and B: assembling the inner sleeve body and the inner sleeve substrate into an integral inner sleeve assembly through a co-injection integral forming process, a welding process or a gluing process; the inner sleeve component is formed by molding an inner sleeve substrate connected with the inner sleeve body through a co-injection integral molding process, or the inner sleeve body and the inner sleeve substrate are assembled into an integral inner sleeve component through a welding process or a gluing process;

and C: coaxially mounting the outer sleeve component and the inner sleeve component to obtain a sleeve component;

step D: and assembling the sleeve assembly, the cutter bar, the clamp and the handle part to obtain the ultrasonic surgical instrument.

When the ultrasonic surgical instrument is used, the transmission assembly in the handle part 4 drives the inner sleeve to move, so that the clamp 3 is opened or closed, and the clamp 3 and the tool bit at the farthest tail end of the tool bar 1 form a separated state or a closed state.

In the use process, the sleeve pipe assembly 2, the cutter bar 1 and the clamp 3 are driven to rotate by rotating the circumferential direction of the outer ring of the thumb wheel.

Fig. 8 is a prior art assembly diagram showing the need for a complex bulging structure between the inner and outer sleeve portions, which is complicated and has poor performance.

It should be noted that the embodiments in the drawings are merely representative examples of the present invention, and it is not easy for a skilled person to understand that the scope of the present invention is not limited to the scope defined by the embodiments in the drawings, and combinations, modifications, and variations of the embodiments in the drawings fall within the scope of the present invention.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. An ultrasonic surgical instrument comprises a cutter bar, a clamp, a sleeve assembly and a handle portion, wherein a cutter head structure is arranged at the far end of the cutter bar, the clamp and the cutter head at the far end of the cutter bar form a clamping structure, the cutter bar is an ultrasonic cutter bar used for transmitting ultrasonic energy, the sleeve assembly is sleeved outside the cutter bar, the clamp is arranged at the far end portion of the sleeve assembly, and the handle portion is arranged at the near end portion of the sleeve assembly; the utility model is characterized in that, wherein, the sleeve subassembly includes outer tube subassembly, interior sleeve pipe subassembly, the outer tube subassembly with interior sleeve pipe subassembly is monolithic structure, through coupling mechanism connect in handle portion.

2. The ultrasonic surgical device of claim 1, wherein the outer cannula assembly and the inner cannula assembly are coupled, the inner cannula assembly being disposed between the blade bar and the outer cannula assembly, and wherein the drive assembly of the handle portion moves the inner cannula to open or close the clamp such that the clamp is separated from or closed by the blade at the distal end of the blade bar.

3. The ultrasonic surgical instrument of claim 1, wherein the outer cannula assembly comprises an outer cannula body and an outer cannula base, the outer cannula body and the outer cannula base being formed as one piece by a co-injection molding process or being assembled as one piece by a gluing process or a welding process.

4. The ultrasonic surgical instrument of any one of claims 1 to 3, wherein the inner cannula assembly comprises an inner cannula body and an inner cannula base body, the inner cannula body and the inner cannula base body being formed as one piece by a co-injection integral molding process or being assembled as one piece by a gluing process or a welding process.

5. The ultrasonic surgical device of any one of claims 1-4, wherein the ultrasonic surgical device comprises a thumb wheel outer race that is nested outside of the outer cannula assembly.

6. The ultrasonic surgical device of claim 5, wherein the outer sleeve assembly is provided with a first locking boss and a rib, the thumb wheel outer ring is provided with a second locking boss and a groove, the rib of the outer sleeve assembly is matched with the groove of the thumb wheel outer ring, the first locking boss of the outer sleeve assembly is matched with the second locking boss of the thumb wheel outer ring, and the outer sleeve assembly is assembled with the thumb wheel outer ring.

7. The ultrasonic surgical device of claim 6, wherein the first snap bosses are 1 or more and the ribs are 1 or more.

8. The ultrasonic surgical device of claim 7, wherein there are two of said first snap bosses and said ribs, respectively, symmetrically distributed about the circumference.

9. The ultrasonic surgical device of any one of claims 1-8, wherein ultrasonic surgical device comprises a seal ring positioned between the outer cannula assembly and the inner cannula assembly.

10. The ultrasonic surgical instrument of claim 9 wherein said seal ring is located between an outer cannula base of said outer cannula assembly and an inner cannula base of said inner cannula assembly.

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