CN109044491B

CN109044491B - Ultrasonic scalpel

Info

Publication number: CN109044491B
Application number: CN201811019045.8A
Authority: CN
Inventors: 陈燚; 庞发斌; 姚俊
Original assignee: Shanghai Tiping Medical Technology Co ltd
Current assignee: Yibaiwan Medical Technology Shanghai Co ltd
Priority date: 2018-09-03
Filing date: 2018-09-03
Publication date: 2020-12-18
Anticipated expiration: 2038-09-03
Also published as: CN109044491A

Abstract

The invention discloses an ultrasonic scalpel, and belongs to the technical field of medical instruments. The ultrasonic scalpel comprises a handle, an ultrasonic transducer, an ultrasonic conducting rod assembly, a cannula clamp assembly and a waterproof sleeve, wherein the ultrasonic transducer is arranged in a shell of the handle; the ultrasonic conducting rod assembly is detachably connected with the ultrasonic transducer; the sleeve clamp assembly is sleeved outside the ultrasonic conduction rod assembly and detachably connected with the shell, and the waterproof sleeve is detachably sleeved outside the handle. The ultrasonic scalpel can replace a new sleeve clamp component after or during a single operation so as to ensure the stable performance of the ultrasonic scalpel; after each operation, the ultrasonic conduction rod assembly is detached from the handle and is cleaned and sterilized independently, so that cleanness is guaranteed; the ultrasonic transducer can be repeatedly used together with other components of the handle for a plurality of times, so that the cost of a single operation is reduced; in addition, the waterproof sleeve can isolate blood and the like from permeating into the handle in an operation, and the difficulty of repeated cleaning and sterilization of the handle is greatly reduced.

Description

Ultrasonic scalpel

Technical Field

The invention relates to the technical field of medical instruments, in particular to an ultrasonic scalpel.

Background

The structure of the ultrasonic scalpel head in the existing market is relatively complex, so that the ultrasonic scalpel head cannot be effectively cleaned and sterilized and is difficult to be reused; meanwhile, in order to ensure the cutting and closing performance of the ultrasonic scalpel, a disposable design scheme is mostly adopted, so that the use cost of the ultrasonic scalpel for surgery is high.

The main reason that present ultrasonic surgical knife head can not be effectively cleaned is that the knife head part contains parts such as clamp, tissue gasket (set up on the clamp), ultrasonic knife head, sealing ring and drive transmission mechanism that the clamp opened and shut, and structural space is narrow and small, and eschar residue that cutting tissue produced in the operation can be piled up in the narrow and small space between ultrasonic knife head, clamp and transmission mechanism, can't be fully cleaned and sterilized after the operation, also can influence opening and shutting of clamp and transmission mechanism's performance simultaneously.

The stability of the cutting and closing performance of the ultrasonic scalpel is mainly controlled by a tissue gasket, an ultrasonic scalpel head coating, clamp pressure and the like. The tissue gasket of the prior ultrasonic scalpel is abraded after a plurality of cutting and closing operations are carried out, the local clamp pressure is reduced or increased due to the generation of depressions, the tissue receives ultrasonic energy unevenly, the closing quality of blood vessels is reduced, and even the condition of bleeding caused by the failure of closing occurs. On the other hand, the ultrasonic cutter head coating can be gradually stripped due to high-frequency vibration in the using process, the ultrasonic cutter head metal body can also generate fatigue pitting corrosion, the defects of pits, cracks and the like appear on the surface, the surface roughness is reduced, the closing quality of blood vessels is further reduced, and the condition of closure failure bleeding can appear in severe cases.

Disclosure of Invention

The invention aims to provide an ultrasonic scalpel capable of reducing use cost.

In order to achieve the purpose, the invention adopts the following technical scheme:

an ultrasonic surgical blade comprising:

a handle having a housing;

an ultrasonic transducer disposed in the housing;

an ultrasound conductive rod assembly removably connected with the ultrasound transducer; and

and the sleeve clamp assembly is sleeved outside the ultrasonic conducting rod assembly and is detachably connected with the shell.

Furthermore, the casing clamp assembly comprises a clamp, an outer rotating wheel, an inner casing and an outer casing sleeved outside the inner casing; the shell is provided with a pull rod and a movable assembly which can move in the axial direction relative to the shell; be provided with first elongated hole along the axial on the lateral wall of outer tube, interior sleeve pipe with outer runner is through passing the connecting piece in first elongated hole is connected, clamp respectively with the distal end of outer tube with interior sleeve pipe rotates the connection, outer runner with the connection can be dismantled to the casing, the outer tube with the connection can be dismantled to the movable assembly, the pull rod is used for passing through the movable assembly drives the outer tube is at axial motion.

Furthermore, the outer rotating wheel is clamped with the shell, and the outer sleeve is clamped with the movable assembly; the outer rotating wheel can drive the outer sleeve, the inner sleeve and the ultrasonic conducting rod assembly to rotate relative to the shell after the sleeve clamp assembly is clamped on the handle.

Further, the movable assembly comprises a buckle box, a clamping ring assembly and a first elastic resetting piece; the buckle box is arranged on the shell and can move in the axial direction relative to the shell, and the pull rod is connected with the buckle box through a first elastic piece; the snap ring subassembly is used for the joint the outer tube, be provided with the confession on the buckle case the snap ring subassembly is along radial motion's the chamber that holds, the movable assembly still including being used for restricting the radial limit structure of snap ring subassembly at radial motion stroke, first elasticity resets and is used for giving the snap ring subassembly provides makes it keep away from the power of outer tube axis.

Further, radial limit structure including be located hold the chamber outside and with locating part that the snap ring subassembly is connected, set up in on the snap ring subassembly and follow the second slot hole that the snap ring subassembly direction of motion extends, and wear to locate the second slot hole with spacing post on the buckle case, first elasticity reset set up in the locating part with between the spacing post.

Further, the casing with outer runner through set up in second joint portion on the outer runner inner wall with reset through second elasticity and set up in third joint portion joint on the casing, second elasticity resets and is used for second joint portion provides and keeps away from the power of outer tube axis, the supersound scalpel still includes the release latch fitting, the release latch fitting is used for driving simultaneously third joint portion with snap ring subassembly respectively with second joint portion with the outer tube breaks away from.

Further, the casing with outer runner through set up in the second joint portion that sets up on the outer runner with set up in third joint portion joint on the casing, the supersound scalpel still including reset through second elasticity connect in the piece that unlocks of casing, the piece that unlocks is located the locating part outside and with third joint portion connects, second elasticity resets be used for the piece that unlocks provides and keeps away from the power of outer tube axis, the piece that unlocks is used for driving simultaneously third joint portion with the snap ring subassembly respectively with second joint portion with the outer tube breaks away from.

Further, the ultrasonic conduction rod assembly comprises an ultrasonic conduction rod and an inner rotating wheel arranged on the periphery of the ultrasonic conduction rod, wherein the inner rotating wheel is used for being matched with the inside of the outer rotating wheel and can rotate together with the outer rotating wheel; the far end of the ultrasonic conduction rod is provided with a cutting edge, one of the near end of the ultrasonic conduction rod and the ultrasonic transducer is provided with an internal thread, and the other one of the near end of the ultrasonic conduction rod and the ultrasonic transducer is provided with an external thread matched with the internal thread.

Further, ultrasonic scalpel still includes waterproof cover, waterproof cover is used for detachably the cover to locate on the handle, waterproof cover can separate pollution sources such as blood, body fluid contact or permeate the handle in the operation to reduce the degree of difficulty and the risk of the repeated washing sterilization of handle by a wide margin.

Further, the ultrasonic scalpel further comprises a recording device for recording the number of times and/or duration of use of the ultrasonic conductive rod assembly.

Further, the shell is divided into a front cavity and a rear cavity by a sealing element, the ultrasonic transducer is arranged in the rear cavity, and a flushing channel is arranged in the front cavity.

The invention has the following beneficial effects:

according to the ultrasonic scalpel provided by the invention, the ultrasonic conducting rod assembly and the sleeve clamp assembly are respectively detachably connected with the handle, and a new sleeve clamp assembly can be replaced after or during a single operation, so that the stability of the performance of the ultrasonic scalpel is ensured; after each operation, the ultrasonic conduction rod assembly can be detached from the handle to be cleaned and sterilized independently, so that the reliability of cleaning and sterilization and the cleanness of the ultrasonic scalpel are ensured; the ultrasonic transducer is designed to be a part of the handle, and can be repeatedly used together with other components of the handle for a plurality of times, so that the cost of a single operation can be reduced, and the resource waste can be avoided; in addition, the waterproof sleeve can separate pollution sources such as blood, body fluid and the like from contacting or permeating into the handle in an operation, so that the difficulty and risk of repeated cleaning and sterilization of the handle are greatly reduced.

Drawings

FIG. 1 is a schematic structural view of an ultrasonic surgical blade according to an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic view of the internal structure of a handle provided in accordance with an embodiment of the present invention;

FIG. 4 is a cross-sectional view of an ultrasonic surgical blade provided in accordance with an embodiment of the present invention;

FIG. 5 is a schematic structural view of a handle provided in accordance with an embodiment of the present invention;

FIG. 6 is a schematic structural view of a waterproof jacket according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of an ultrasound conducting rod assembly provided in accordance with an embodiment of the present invention;

FIG. 8 is a front view of an ultrasound conducting rod assembly provided in accordance with an embodiment of the present invention;

FIG. 9 is a left side view of FIG. 8;

FIG. 10 is a front view of a casing clamp assembly according to an embodiment of the present invention;

FIG. 11 is an exploded view of a cannula clamp assembly provided in accordance with an embodiment of the present invention;

fig. 12 is a schematic diagram of the internal structure of the movable assembly provided in the embodiment of the present invention.

In the figure:

100. a handle; 101. a housing; 102. a pull rod; 103. a movable component; 104. a third elastic reset member; 105. a first elastic member; 106. a second snap projection; 107. unlocking the lock; 108. a second elastic reset piece;

110. activating a switch; 111. a rotating shaft; 112. an electrode of the housing; 113. a seal member;

1011. an inlet; 1012. an outlet; 1013. a guide groove;

1031. a buckle box; 1032. a snap ring assembly; 1033. a first elastic reset member; 1034. a limiting column; 1035. a limiting member;

1091. a memory chip; 1092. a ring electrode; 1093. a chip electrode;

10311. a guide block; 10312. an accommodating chamber; 10313. a through hole; 10314. a chamfer on the snap ring assembly; 10321. a second elongated hole;

200. an ultrasonic transducer; 201. an electrode of an ultrasonic transducer;

300. an ultrasound-conductive rod assembly; 301. an ultrasonic conduction rod; 302. an inner runner; 303. an annular shock absorbing member; 304. a connecting plate; 3011. a distal end of an ultrasound conducting rod; 3012. a proximal end of an ultrasound conducting rod;

400. a casing clamp assembly; 401. clamping; 402. an outer runner; 403. an inner sleeve; 404. an outer sleeve; 405. a first clamping part; 4041. a first elongated hole; 4021. a first card slot; 4022. a second card slot; 4031. a first snap projection; 4051. a U-shaped groove;

500. a waterproof jacket.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

The present embodiment provides an ultrasonic surgical blade, and it should be noted that the terms "far", "near", "front", "back" and the like in this text refer to the operator of the ultrasonic surgical blade, wherein the end close to the operator is the near end or the back when the operator holds the ultrasonic surgical blade, and the end far from the operator is the far end or the front. The axial direction is a direction coincident with or parallel to the axial direction of the ultrasonic transmission rod of the ultrasonic scalpel, and the radial direction is a direction perpendicular to the axial direction.

As shown in fig. 1-4, the present embodiment provides an ultrasonic surgical blade including a handle 100, an ultrasonic transducer 200, an ultrasonic conductive rod assembly 300, and a cannula clamp assembly 400.

As shown in fig. 3 to 5, the handle 100 has a housing 101, and the ultrasonic transducer 200 is disposed in the housing 101. The housing of the ultrasonic transducer 200 is preferably, but not limited to, made of a polymer or metal material satisfying desired biocompatibility, such as PC (Polycarbonate), AL-7075(7075 aluminum alloy), or the like; the housing 101 is preferably, but not limited to, made of a polymer material satisfying biocompatibility, such as PC, ABS (Acrylonitrile Butadiene Styrene plastic), and the like. The ultrasonic conduction rod assembly 300 is detachably connected with the ultrasonic transducer 200; the casing clamp assembly 400 is sleeved outside the ultrasonic conducting rod assembly 300 and detachably connected with the housing 101. The electrode 201 of the ultrasonic transducer 200 is in contact with the electrode 112 on the housing 101, the ultrasonic conduction rod assembly 300 can conduct the ultrasonic vibration energy generated by the ultrasonic transducer 200 along the rotation axis 111 direction thereof to the blade at the distal end of the ultrasonic conduction rod assembly 300, and then the ultrasonic vibration energy is further conducted to the tissue by the blade, and the high-frequency friction vibration of the blade generates heat and mechanical cutting force to achieve the surgical effect of cutting the tissue or closing the blood vessel.

As shown in fig. 2 and 6, the ultrasonic scalpel provided in the present embodiment further includes a waterproof case 500, and the waterproof case 500 is configured to be detachably sleeved on the handle 100. Waterproof jacket 500 is preferably, but not limited to, made of a flexible polymer material (e.g., soft silicone rubber, etc.) that meets biocompatibility requirements. The waterproof jacket 500 has a contour that conforms to the contour of the handle 100. after the handle 100 is completely embedded in the waterproof jacket 500, the waterproof jacket 500 will conform to various portions of the handle 100 to minimize its effect on the maneuverability of the handle 100. The specific structure of the waterproof case 500 is not limited, and the waterproof case may be wrapped around the outside of the handle 100. For example, a long slot opening for the handle 100 to be inserted into is provided at the upper end of the waterproof case 500, and the long slot opening can be symmetrically unfolded along the long slot opening so that the handle 100 can be inserted into the long slot opening, and the long slot opening can be closed and sealed by a snap, a zipper, or the like after the handle 100 is completely inserted into the long slot opening.

After one operation, the tissue pad on the clamp is easy to wear, which results in the significant decrease of the operation performance of the ultrasonic scalpel, but the wear of the ultrasonic conducting rod 301 and the ultrasonic transducer 200 is not serious, and the ultrasonic conducting rod 301 and the ultrasonic transducer 200 are just the main cost of the ultrasonic scalpel. The ultrasonic conduction rod assembly 300 and the cannula clamp assembly 400 of the ultrasonic scalpel provided by the embodiment are detachably connected with the handle 100 respectively, and a new cannula clamp assembly 400 can be replaced after or during a single operation, so that the performance stability of the ultrasonic scalpel is ensured; after each operation, the ultrasonic conduction rod assembly 300 can be detached from the handle 100 for cleaning and sterilization independently, and the outer surface of the ultrasonic conduction rod assembly is completely exposed to ensure the reliability of cleaning and sterilization and the cleanness of the ultrasonic scalpel; the ultrasonic transducer 200 is designed as a part of the handle 100, and can be reused together with other components of the handle 100 for a plurality of times, so as to reduce the cost of a single operation and avoid resource waste; in addition, the waterproof jacket 500 can isolate pollution sources such as blood and body fluid from contacting or permeating into the handle 100 in an operation, so that the difficulty and risk of repeated cleaning and sterilization of the handle 100 are greatly reduced. The specific number of uses of the ultrasonic conduction rod assembly 300 and the handle 100 can be set according to specific damage and contamination conditions, for example, the ultrasonic conduction rod assembly 300 can be reused for 5-10 times, and the handle 100 can be reused for about 100 times.

As shown in fig. 3, the housing 101 is divided into a front chamber and a rear chamber by a sealing member 113, and the sealing member 113 is preferably, but not limited to, made of a rubber material. The ultrasonic transducer 200 is disposed in the back chamber and the front chamber is provided with a flushing channel. The flushing channel can be specifically arranged according to the position needing to be cleaned, for example, the inside of the whole front cavity can also be used as the flushing channel. The inlet 1011 of the flushing channel is preferably disposed at the front end of the housing 101, the outlet 1012 is disposed at the lower end of the housing 101, pressurized cleaning liquid can be filled from the inlet 1011 during cleaning, and the cleaning liquid flows out from the outlet 1012 after the internal structure of the housing 101 is flushed, and the sealing member 113 can prevent the liquid in the front cavity from approaching or contacting the electrode 201 of the ultrasonic transducer 200 or the electrode 112 of the housing 101 to cause short circuit.

As shown in fig. 3, the housing 101 is provided with an excitation switch 110 for controlling the operation of the ultrasonic transducer. The activation switch 110 is comprised of at least two stages of combination switches that provide at least two energy level mode selections, and the user can select the appropriate energy signal to activate the ultrasonic surgical blade according to the clinical needs. The housing 101 is also used to house the wires that drive the operation of the ultrasonic scalpel, and these wires are arranged with reference to the existing ultrasonic scalpel. For example, a wire for transmitting a control signal for the excitation switch 110 and a wire for driving the alternating current energy of the ultrasonic transducer 200 are disposed between the excitation switch 110 and the ultrasonic transducer 200, and a wire for transmitting a control signal for the excitation switch 110 and a wire for driving the alternating current energy of the ultrasonic transducer 200 are disposed between the electrode 201 of the ultrasonic transducer 200 and the electrode 112 of the housing 101. To facilitate the operator's awareness of when a new ultrasonic conducting rod assembly 300 should be replaced, the ultrasonic surgical blade further includes a recording device disposed within the housing 101 for recording the number and/or duration of uses of the ultrasonic conducting rod assembly 300.

As shown in fig. 7 and 8, the ultrasound conducting rod assembly 300 includes an ultrasound conducting rod 301, and the ultrasound conducting rod 301 is preferably, but not limited to, machined from a light metal (e.g., titanium alloy) that is relatively tough and biocompatible. The ultrasonic conducting rod 301 may be a straight rod or a bent rod with a suitable curvature radius, and the length of the rod is about an integral multiple of the corresponding metal wavelength at the operating frequency of the ultrasonic system. The distal end 3011 of the ultrasound conducting rod 301 is provided with a blade. The proximal end 3012 of the rod 301 may be removably coupled to the ultrasound transducer 200 by a threaded connection or the like that may be rotated relative to the ultrasound transducer 200. In this embodiment, the proximal end 3012 is provided with external threads and the ultrasonic transducer 200 is provided with internal threads that mate with the external threads. Understandably, in other embodiments, the positions of the internal threads and the external threads may be interchanged, i.e., the proximal end 3012 is provided with internal threads and the ultrasonic transducer 200 is provided with external threads matching the internal threads.

With continued reference to fig. 7 and 8, an annular shock absorbing member 303 may be disposed on the ultrasound transmission rod 301, especially at a position where the vibration amplitude of the ultrasound transmission rod 301 is relatively small, and an interference fit is formed between the annular shock absorbing member 303 and the cannula clamp assembly 400, so as to absorb and reduce the lateral vibration of the ultrasound transmission rod 301, and simultaneously, the annular shock absorbing member 303 and the cannula clamp assembly 400 have a sealing function, so as to prevent blood from penetrating into a space between the inner cannula 403 and the ultrasound transmission rod 301 during an operation.

As shown in FIGS. 3, 4, 10 and 11, the cannula clamp assembly 400 is removably attached to the handle 100 by: the cannula clamp assembly 400 includes a clamp 401, an outer swivel 402, an inner cannula 403 and an outer cannula 404, the inner cannula 403 and the outer cannula 404 each preferably, but not limited to, being thin-walled metal tubing; the outer sleeve 404 is sleeved outside the inner sleeve 403, the inner sleeve 403 is connected with the outer rotating wheel 402, the outer rotating wheel 402 is detachably connected with the shell 101, and the proximal end of the outer sleeve 404 is detachably connected with the movable assembly 103; the handle 100 comprises a pull rod 102 arranged on the shell 101 and a movable assembly 103 arranged on the shell 101 in an axially movable manner; the pull rod 102 is used for driving the outer sleeve 404 to move relative to the inner sleeve 403 in the axial direction through the movable assembly 103 so as to open and close the clamp 401.

As shown in fig. 11, the inner and outer sleeves achieve relative movement in the axial direction by the following structure: a first elongated hole 4041 is axially arranged on the outer sleeve 404, a first connecting piece on the inner sleeve 403 passes through the first elongated hole 4041 to be connected with a second connecting piece on the outer runner 402, one of the first connecting piece and the second connecting piece is a first clamping protrusion 4031, and the other one is a first clamping groove 4021 matched with the first clamping protrusion 4031. Preferably, first elongated holes 4041 are provided on opposite sides of outer sleeve 404, respectively. The size of first elongated hole 4041 determines the axial travel of outer sleeve 404.

As shown in fig. 3 and 4, the pull rod 102 can drive the movable assembly 103 to move in the axial direction by the following structure: the pull rod 102 is rotatably connected to the housing 101 through a rotating shaft 111 disposed along a radial direction, and the swing amplitude of the pull rod 102 is preferably, but not limited to, 20 degrees to 40 degrees. A third elastic restoring member 104 may be further disposed on the housing 101, the third elastic restoring member 104 is configured to provide a restoring elastic force to the pull rod 102 after the pull rod 102 pulls the movable assembly 103 to move forward, and the clamp 401 is in an open state when the pull rod 102 is in the initial position. Each of the elastic return members in this embodiment is preferably, but not limited to, a spring. The pull rod 102 and the movable assembly 103 are preferably connected by a first elastic member 105, and the first elastic member 105 is preferably rotatably connected to the pull rod 102 and the movable assembly 103, respectively. The first elastic member 105 is preferably, but not limited to, an elastic link made of a metal material having a good elasticity (e.g., SUS304 stainless steel). To ensure the axial movement of the movable assembly 103, a slide groove (not shown) extending in the axial direction may be provided on one of the movable assembly 103 and the housing 101, and a guide block 10311 slidable along the slide groove may be provided on the other. When the pull rod 102 rotates counterclockwise as shown by the arrow in fig. 3, the elastic link drives the movable assembly 103 and the outer sleeve 404 to move forward in the axial direction, the clamp 401 is closed, the pull rod 102 is released, the pull rod 102 is reset under the action of the first elastic member 105, the elastic link drives the movable assembly 103 and the outer sleeve 404 to move backward in the axial direction, and the clamp 401 is opened.

With continued reference to fig. 3 and 4, the outer rotating wheel 402 is preferably engaged with the housing 101, the proximal end of the outer sleeve 404 is preferably engaged with the movable assembly 103, and the outer rotating wheel 402 is engaged with the housing 101, and the proximal end of the outer sleeve 404 is engaged with the movable assembly 103 such that the outer rotating wheel 402 can rotate the outer sleeve 404, the inner sleeve 403 and the ultrasonic conducting rod assembly 300 relative to the housing 101.

As shown in fig. 4 and fig. 7 to 9, the external turning wheel 402 may drive the ultrasonic conduction rod assembly 300 to rotate as follows: the ultrasonically conductive rod assembly 300 includes an inner rotor 302 disposed on the outer periphery of the ultrasonically conductive rod 301, and the ultrasonically conductive rod 301 and the inner rotor 302 are preferably, but not limited to, fixedly fitted by interference fit. The inner rotor 302 is preferably, but not limited to, made of a wear-resistant and high-temperature-resistant polymer material, such as PC, PTFE (polytetrafluoroethylene), etc., and the inner rotor 302 is adapted to fit inside the outer rotor 402 and rotate together with the outer rotor 402. The rotation of the inner wheel 302 and the outer wheel 402 together, e.g. in a polygon, may be achieved by arranging the outer wall of the inner wheel 302 and the inner cavity of the outer wheel 402 to be non-circular. The recording device specifically comprises a memory chip 1091 arranged in the inner rotating wheel 302, and the memory chip 1091 is electrically connected with a power supply of the ultrasonic scalpel. Specifically, the inner rotary wheel 302 has a ring electrode 1092 on its outer periphery to connect with the memory chip 1091, and the ring electrode 1092 can be connected to the chip electrode 1093 on the housing 101 by contact to electrically connect with the power supply of the ultrasonic scalpel. When memory chip 1091 is energized, it may record the length of time that ultrasound sensing rod assembly 300 has been used and accumulate the number of times that ultrasound sensing rod assembly 300 has been used.

As shown in fig. 3, 4 and 11, the outer turning wheel 402 is engaged with the housing as follows: the inner wall of the outer rotating wheel 402 is provided with a second card slot 4022, and the housing 101 is provided with a second card protrusion 106 matched with the second card slot 4022. Understandably, in other embodiments, the positions of the second card slot 4022 and the second card protrusion 106 may be interchanged, that is, the second card slot 4022 is disposed on the housing 101, and the second card protrusion 106 is disposed on the outer rotor 102. The second detent protrusion 106 and the second detent groove 4022 are preferably, but not limited to, annular, and the second detent protrusion 106 can rotate in the circumferential direction along the second detent groove 4022.

As shown in fig. 3, 4 and 12, the outer sleeve 404 is engaged with the movable assembly 103 by: the movable assembly 103 comprises a snap box 1031, a snap ring assembly 1032 and a first elastic reset piece 1033; the snap box 1031 is arranged on the housing 101 and can move in the axial direction relative to the housing 101, and the pull rod 102 is connected with the snap box 1031 through a first elastic member 105; the collar assembly 1032 is adapted to engage the outer sleeve 404. understandably, to provide for removability, the collar of the collar assembly 1032 should have an inner diameter greater than the outer diameter of the portion it engages. Specifically, the snap box 1031 is provided with an accommodating chamber 10312 for the snap ring assembly 1032 to move along the radial direction, preferably, the snap ring assembly 1032 moves in the accommodating chamber 10312 along the up-and-down direction, the movable assembly 103 further comprises a radial limiting structure for limiting the radial movement stroke of the snap ring assembly 1032, and the first elastic restoring piece 1033 is used for providing a force for the snap ring assembly 1032 to be away from the axis of the outer sleeve 404. Understandably, the snap box 1031 is provided with a through hole 10311 for passing the outer sleeve 404, and the axis of the through hole 10311 is preferably collinear with the axis of the outer sleeve 404. For the convenience of installation, chamfers are respectively arranged on the outer rotating wheel 402 and the snap ring component 1032, the chamfer 10314 on the snap ring component 1032 is in a tapered shape along the installation direction (the direction from the front to the back) of the casing clamp component 400, the chamfer on the outer rotating wheel 402 is in a tapered and expanded shape along the installation direction of the casing clamp component 400, and the casing clamp component 400 is directly inserted into the handle 100 along the axial direction to realize clamping.

The radial limiting structure includes a limiting member 1035 located outside the accommodating chamber 10312 and connected to the snap ring assembly 1032, a second elongated hole 10321 disposed on the snap ring assembly 1032 and extending along the moving direction of the snap ring assembly 1032, a limiting post 1034 passing through the snap box 1031 and the second elongated hole 10321, and a first elastic restoring member 1033 disposed between the limiting member 1035 and the limiting post 1034. The size of the second elongated hole 10321 determines the stroke of the ring member 1032 and the amount of deformation of the first resilient return member 1033.

In order to facilitate the connection between the proximal end of the outer sleeve 404 and the movable assembly 103, a cavity is formed between the ultrasonic conducting rod 301 and the inner rotary wheel 302, a connecting plate 304 is radially arranged in the cavity, a first hollow clamping portion 405 is arranged at the proximal end of the outer sleeve 404, a U-shaped groove 4051 extending axially and penetrating through the proximal end of the first clamping portion 405 is arranged at the first clamping portion 405, and the U-shaped groove 4051 can penetrate through the connecting plate 304. Outer sleeve 404 is snap fit with clip assembly 1032 by first snap fit portion 405. A clamping groove matched with the clamping ring component 1032 can be arranged on the periphery of the first clamping portion 405 to enhance clamping stability.

The cannula clamp assembly 400 is assembled to the handle 100 by two snaps and has a rotational degree of freedom about an axis in conjunction with the ultrasound conducting rod assembly 300, such that the distally located clamp 401 holds the tissue in the desired position by the user and the clamp 401 opens and closes by pressing the pull rod 102, when the clamp 401 is clamped closed against the blade, the movable member 103 creates a large frictional force against the proximal end of the outer cannula 404, at which time the rotational degree of freedom of the cannula clamp assembly 400 and the ultrasound conducting rod assembly 300 is locked to provide the operator with sufficient operational rigidity.

To facilitate the disassembly and assembly of the ultrasound conducting rod assembly 300 and the cannula clamp assembly 400, referring again to FIGS. 3 and 4, the ultrasonic surgical blade also includes an unlocking member 107. Casing 101 and outer runner 402 reset the piece 108 through setting up the second joint portion on outer runner 402 inner wall and setting up the third joint portion joint on casing 101 through second elasticity, second joint portion and third joint portion are for above-mentioned second card is protruding 106 and second draw-in groove 4022, second elasticity resets piece 108 and is used for providing the power of keeping away from outer tube 404 axis for third joint portion, the ultrasonic scalpel still includes unlocking piece 107, unlocking piece 107 is used for overcoming the elastic force that second elasticity resets piece 108 and first elasticity reset piece 1033 and exert and drive third joint portion and snap ring subassembly and break away from with second joint portion and outer tube 404 respectively under the effect of external force simultaneously. The directions of the restoring forces applied by the second elastic restoring member 108 and the first elastic restoring member 1033 are preferably the same. The second clamping portion is preferably in the shape of a circular arc with a flattened bottom so as to be connected with the second elastic reset piece 108. The housing 101 is preferably provided with a guide groove 1013 for the second catching portion to move in the radial direction. The guide groove 1013 is preferably circular arc-shaped. The guide channel 1013 preferably has an opening at its upper end for the second catching part to move up and down, and at least the lower part of the second catching part and the second elastic restoring member 108 are received in the guide channel. More preferably, the unlocking piece 107 is connected to the second clamping portion, and the unlocking piece 107 is located outside the limiting piece 1035. Of course, in other embodiments, the unlocking element 107 may not be connected to the second clamping portion, but may be disposed on the housing through an additional elastic resetting element.

When the unlocking piece 107 is pressed downwards, the snap ring component 1032 moves downwards, the third clamping part moves downwards, the two buckles are unlocked simultaneously, and when the unlocking piece 107 is loosened, the second elastic resetting piece 108 lifts the unlocking piece 107 upwards for resetting.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims

1. An ultrasonic surgical blade, comprising:

a handle having a housing;

an ultrasonic transducer disposed in the housing;

the sleeve clamp assembly is sleeved outside the ultrasonic conducting rod assembly and is detachably connected with the shell;

the sleeve clamp assembly comprises a clamp, an outer rotating wheel, an inner sleeve and an outer sleeve sleeved outside the inner sleeve;

the shell is provided with a pull rod and a movable assembly which can move in the axial direction relative to the shell;

the outer sleeve can move axially relative to the inner sleeve, the inner sleeve is connected with the outer rotating wheel, the outer rotating wheel is detachably connected with the shell, the near end of the outer sleeve is detachably connected with the movable assembly, and the pull rod is used for driving the outer sleeve to move through the movable assembly;

the movable assembly comprises a buckle box, a snap ring assembly and a first elastic resetting piece; the buckle box is arranged on the shell and can move in the axial direction relative to the shell, and the pull rod is connected with the buckle box through a first elastic piece; the snap ring subassembly is used for the joint the outer tube, be provided with the confession on the buckle case the snap ring subassembly is along radial motion's the chamber that holds, the movable assembly still including being used for restricting the radial limit structure of snap ring subassembly at radial motion stroke, first elasticity resets and is used for giving the snap ring subassembly provides makes it keep away from the power of outer tube axis.

2. The ultrasonic surgical blade of claim 1, wherein the outer wheel is snap-fitted to the housing, and the outer sleeve is snap-fitted to the movable assembly; the outer rotating wheel can drive the outer sleeve, the inner sleeve and the ultrasonic conducting rod assembly to rotate relative to the shell after the sleeve clamp assembly is clamped on the handle.

3. The ultrasonic surgical knife according to claim 1, wherein the radial limiting structure comprises a limiting member located outside the accommodating cavity and connected to the snap ring assembly, a second elongated hole disposed on the snap ring assembly and extending along the movement direction of the snap ring assembly, and a limiting post penetrating the second elongated hole and the snap box, and the first elastic resetting member is disposed between the limiting member and the limiting post.

4. The ultrasonic scalpel according to claim 1 or 3, wherein the housing and the outer rotating wheel are clamped by a second clamping portion arranged on an inner wall of the outer rotating wheel and a third clamping portion arranged on the housing by a second elastic reset member, the second elastic reset member is used for providing a force far away from the axis of the outer sleeve for the second clamping portion, the ultrasonic scalpel further comprises an unlocking member, and the unlocking member is used for simultaneously driving the third clamping portion and the clamping ring assembly to be respectively separated from the second clamping portion and the outer sleeve.

5. The ultrasonic surgical blade of any one of claims 1 to 2, wherein the ultrasonic conducting rod assembly comprises an ultrasonic conducting rod and an inner rotating wheel disposed at the periphery of the ultrasonic conducting rod, the inner rotating wheel being adapted to fit inside the outer rotating wheel and being rotatable therewith; the far end of the ultrasonic conduction rod is provided with a cutting edge, one of the near end of the ultrasonic conduction rod and the ultrasonic transducer is provided with an internal thread, and the other one of the near end of the ultrasonic conduction rod and the ultrasonic transducer is provided with an external thread matched with the internal thread.

6. The ultrasonic surgical blade of any one of claims 1 to 2, further comprising a waterproof sleeve for removably fitting over the handle.

7. The ultrasonic surgical blade of any one of claims 1 to 2, further comprising a recording device for recording the number and/or duration of uses of the ultrasonic conductive rod assembly.

8. The ultrasonic surgical blade of any one of claims 1 to 2, wherein the housing is divided by a seal into a front chamber and a rear chamber, the ultrasonic transducer being disposed within the rear chamber, the front chamber having an irrigation channel disposed therein.