CN112515738B

CN112515738B - Ultrasonic scalpel capable of being stably and repeatedly used

Info

Publication number: CN112515738B
Application number: CN202011263796.1A
Authority: CN
Inventors: 陈孟军
Original assignee: Jiashan Feikuo Medical Technology Co ltd
Current assignee: Jiashan Feikuo Medical Technology Co ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2023-06-13
Anticipated expiration: 2040-11-12
Also published as: CN112515738A

Abstract

A stable reusable ultrasonic surgical blade includes a handle housing, a blade bar assembly, a traction restoration assembly, an electrical connection assembly, and a transducer. The cutter bar assembly comprises a cutter bar, an inner sleeve and an outer sleeve. The traction recovery assembly comprises a positioning cylinder and a clamping cylinder. The clamping cylinder is sleeved and fixed on the outer sleeve. The electrical connection assembly includes positive and negative electrical contact pads, and positive and negative conductive ring assemblies. The positive and negative conductive ring assembly comprises a positive conductive torch, a spacer ring, a negative conductive torch and an assembly barrel. The positive and negative conductive cylinders are respectively and electrically connected with the positive and negative electric contact pieces. The positive conductive cylinder is provided with at least two guide rods along the axial direction of the positive conductive cylinder. The positioning cylinder is provided with at least two guide holes along the axial direction of the positioning cylinder. The assembly barrel is fixedly connected with the transducer. One end of the transducer is fixedly connected with one end of the cutter bar. The ultrasonic scalpel can reduce the cost of the whole operation, thereby reducing the economic burden of patients.

Description

Ultrasonic scalpel capable of being stably and repeatedly used

Technical Field

The invention relates to the technical field of minimally invasive surgical instruments, in particular to an ultrasonic scalpel capable of being stably and repeatedly used.

Background

The ultrasonic surgical knife focuses high-intensity ultrasonic on the knife end through the amplitude transformer, and the strong vibration of the knife is used for cutting off lesions such as tumors of human soft tissues. The use of ultrasonic energy to treat soft tissue allows simultaneous cutting and coagulation to be accomplished while ensuring minimal lateral thermal damage to the tissue. Thus, ultrasonic scalpels are well suited for performing cuts on soft tissue where control of bleeding and minimal thermal damage is desired. Therefore, the ultrasonic surgical blade is a necessary surgical instrument in various minimally invasive surgical operations, and at the same time, with the popularization of minimally invasive surgical operations, the ultrasonic surgical blade has become a conventional surgical instrument.

In the prior art, ultrasonic surgical blades generally have a handle, a blade bar disposed in the handle, and a blade head disposed on the blade bar. The cutter arbor is usually straight-bar, and the tool bit sets up the tip at the cutter arbor. The ultrasonic surgical knife further comprises an inner sleeve sleeved on the cutter bar, an outer sleeve sleeved on the outer side of the inner sleeve, and a clamp rotatably arranged between the inner sleeve and the outer sleeve. The clamp is hinged with the inner sleeve and the outer sleeve through a rotating shaft respectively. When the inner sleeve and the outer sleeve are axially moved, the clamp can be opened and closed relative to the tool bit.

In practical use, the knife bar, the inner and outer sleeves are rotated due to different positions of pathological tissues or in order to orient the knife head to a proper position, and the knife bar of the ultrasonic surgical knife is known to be made of precious metalThe knife bar is made to be replaceable in order to reduce the cost of the operation. Therefore, the cutter bar can be replaced and the cutter bar, the inner sleeve and the outer sleeve can be rotated simultaneouslyPipeA pin is typically provided radially of the tool bar. The bolt is fixed on the cutter bar, and two ends of the bolt penetrate through the inner sleeve and the outer sleeve, so that the inner sleeve and the cutter bar can be driven to rotate together when the outer sleeve is rotated. However, since the insert pin is generally made of metal and is inserted through the inner and outer sleeves, when the cutter bar vibrates at a high frequency, the insert pin also vibrates at a high frequency, and squeaking sounds are generated by collision with the inner and outer sleeves during the vibration. In order to avoid the squeaking, a layer of soft material such as rubber is generally coated on the outer side of the bolt, but due to the small wall thickness of the inner sleeve and the outer sleeve, the rubber is cut and destroyed quickly when the bolt oscillates at high frequency, thereby causing the failure of the cutter bar, which definitely reduces the service life of the ultrasonic surgical knife. The soft material coated on the outer side of the bolt is easy to damage, and the replacement frequency of the cutter bar is even higher than that when the bolt is not arranged, so that the purpose of arranging the bolt to enable the cutter bar to be replaced is not achieved. Also, the provision of the plug does not reduce the cost of the overall operation, thereby disadvantageously reducing the economic burden on the patient.

Disclosure of Invention

In view of the above, the present invention provides a stably reusable ultrasonic surgical blade that can solve the above-described problems.

The utility model provides a can stabilize repeatedly's ultrasonic surgical sword, its includes a handle shell, one inserts and establishes the cutter arbor subassembly in the handle shell, one sets up the traction recovery subassembly of the one end of cutter arbor subassembly, one with traction recovery subassembly connected electric connection subassembly, and one with cutter arbor subassembly and electric connection subassembly connected transducer. The cutter bar assembly comprises a cutter bar, an inner sleeve sleeved on the cutter bar and an outer sleeve sleeved on the outer side of the inner sleeve and fixedly connected with the inner sleeve. The traction recovery assembly comprises a positioning cylinder fixed on the inner sleeve and a clamping cylinder fixed with the positioning cylinder. The clamping cylinder is sleeved and fixed on the outer sleeve. The electric connection assembly comprises two positive and negative electric contact pieces fixed on the handle shell and a positive and negative conductive ring assembly sleeved on the transducer. The positive and negative conducting ring assembly comprises a positive conducting torch connected with the positioning cylinder, a isolating ring sleeved on the positive conducting torch, a negative conducting torch sleeved on the isolating ring, and an assembling cylinder fixed on the handle shell. The positive and negative conductive cylinders are respectively and electrically connected with the positive and negative electric contact pieces. The positive conductive cylinder is provided with at least two guide rods along the axial direction of the positive conductive cylinder. The positioning cylinder is provided with at least two guide holes along the axial direction of the positioning cylinder. At least two guide rods are inserted into at least two guide holes, and the positioning cylinder and the positive conductive cylinder are arranged at intervals. The assembly barrel is fixedly connected with the transducer. One end of the transducer is fixedly connected with one end of the cutter bar.

Further, two mounting grooves are formed in the handle shell, and the positive and negative electric contact pieces are respectively clamped in the two mounting grooves.

Further, the positive and negative electric contact pieces are arc-shaped and protrude from the mounting groove.

Further, the transducer includes a connecting rod threadably coupled to the arbor to couple the transducer to the arbor.

Further, the ultrasonic surgical knife capable of being stably and repeatedly used further comprises a rotary wheel assembly sleeved on the outer side of the cutter bar assembly, and the rotary wheel assembly is fixedly connected with the outer sleeve.

Further, the rotary wheel assembly comprises a driving part sleeved on the outer sleeve and at least one connecting part extending from the axial direction of the driving part, the clamping cylinder comprises a clamping cylinder body, at least one connecting groove is formed in the clamping cylinder body, and the connecting part is inserted into the connecting groove.

Further, the connecting portion is provided with a positioning protrusion extending towards the outer sleeve, at least one positioning hole is formed in the outer sleeve, and the positioning protrusion is inserted into the positioning hole.

Further, when the traction recovery assembly rotates, the electric connection assembly rotates together and drives the transducer to rotate, and when the traction recovery assembly moves along the axial direction of the cutter bar, the electric connection assembly is fixed relative to the traction recovery assembly.

Further, at least one plug-in protrusion is arranged on the inner side wall of the positioning barrel, at least one plug-in hole is formed in the inner sleeve, and the plug-in protrusion is inserted into the plug-in hole.

Further, the negative conductive cylinder comprises a negative conductive cylinder body, an internal thread section arranged at one axial end of the negative conductive cylinder body, and a clamping flange arranged at the other axial end of the negative conductive cylinder body, an external thread section coupled with the internal thread section is arranged on the outer wall of the isolating ring, a clamping groove clamped with the clamping flange is arranged on the outer wall of the assembly cylinder, and after the radial positions of the positive conductive torch and the positioning cylinder are fixed, the negative conductive torch is rotated to fix the axial positions of the assembly cylinder and the isolating ring.

Compared with the prior art, the cutter bar of the ultrasonic surgical knife capable of being stably and repeatedly used is directly and fixedly connected with the transducer, so that the cutter bar can be driven to rotate when the transducer rotates. When the cutter bar is required to rotate, the inner sleeve and the outer sleeve are required to rotate together, and the rotation of the inner sleeve and the outer sleeve is achieved through an external force rotation traction recovery assembly, namely, when the clamping cylinder is rotated under the action of external force, the outer sleeve rotates, the positioning cylinder also rotates together, and the positioning cylinder drives the inner sleeve to rotate together, so that the aim of rotating the inner sleeve and the outer sleeve together is achieved. Simultaneously, by the electrical connection subassembly with the positioning tube is connected, consequently when the positioning tube is rotatory, can drive the electrical connection subassembly is rotatory together, and the transducer also with electrical connection subassembly fixed connection, and then drive the transducer is rotatory, and the transducer with cutter arbor fixed connection to drive the cutter arbor and rotate together, thereby reach interior, outer tube and cutter arbor are rotatory purpose together, and then reach the purpose of adjusting the orientation of tool bit. Because the cutter bar rotates together with the inner sleeve and the outer sleeve and does not use the bolts in the prior art, noise can not be generated when the cutter bar works and vibrates at high frequency, and meanwhile, after the ultrasonic scalpel is used, the cutter bar can be detached from the transducer and reused after being cleaned and disinfected, so that the cost of the whole operation can be reduced, and the economic burden of a patient can be further reduced.

Drawings

Fig. 1 is a schematic view of a partially exploded structure of an ultrasonic surgical knife capable of being stably and repeatedly used according to the present invention.

Fig. 2 is a schematic view of the surface structure of the ultrasonic surgical blade of fig. 1, which is stably reusable.

Fig. 3 is an enlarged schematic view of a partial structure at a of the stably reusable ultrasonic surgical blade of fig. 2.

Fig. 4 is a schematic view of the inner cannula of the steadily reusable ultrasonic surgical blade of fig. 1.

Fig. 5 is a schematic view of the structure of the outer sleeve of the ultrasonic surgical blade of fig. 1.

Fig. 6 is a schematic view of the rotary wheel assembly of the steadily reusable ultrasonic surgical blade of fig. 1.

Fig. 7 is a partially exploded view of the reusable ultrasonic surgical blade of fig. 1.

Fig. 8 is a schematic view of the positioning cartridge of the ultrasonic surgical blade of fig. 1.

Detailed Description

Specific embodiments of the present invention are described in further detail below. It should be understood that the description herein of the embodiments of the invention is not intended to limit the scope of the invention.

Fig. 1 to 8 are schematic structural views of a stable reusable ultrasonic surgical blade according to the present invention. The ultrasonic surgical knife capable of being stably and repeatedly used comprises a handle shell 10, a knife bar assembly 20 inserted in the handle shell 10, a rotating wheel assembly 30 sleeved on the outer side of the knife bar assembly 20, a traction recovery assembly 40 arranged at one end of the knife bar assembly 20, an electric connection assembly 50 connected with the traction recovery assembly 40, and a transducer 60 connected with the knife bar assembly 20 and the electric connection assembly 50. It is contemplated that the reusable ultrasonic surgical blade may include other functional components such as a blade head disposed at an end of the blade bar assembly 10, a transducer module, a handle module, etc., which are well known to those skilled in the art and will not be described in detail herein.

The handle housing 10 is composed of two symmetrically arranged and buckled components, so that the assembly and the manufacture are convenient, and the assembly and the manufacture are the prior art, and are not described herein. The handle housing 10 is provided with two spaced mounting slots 11 for mounting positive and negative electrical contacts 51, 52 of an electrical connection assembly 50 described below. For mounting purposes, the side wall of the mounting groove 11 is provided with at least one insertion hole 12, and a specific mounting method thereof will be described below in conjunction with the positive and negative electrical contact pieces 51 and 52.

The cutter bar assembly 20 comprises a cutter bar 21, an inner sleeve 22 sleeved on the cutter bar 21, and an outer sleeve 23 sleeved on the outer side of the inner sleeve 22 and fixedly connected with the inner sleeve 22. It is contemplated that the tool bar assembly 10 may include other elements such as a tool bit, a clamp, etc., which are conventional and will not be described in detail herein. The knife bar 21 itself is a prior art that vibrates at high frequency under the drive of the transducer, thereby causing the knife head to cut soft tissue. The cutter bar21Are often made of metal, such as titanium, and are therefore relatively expensive, often being used multiple times to reduce the cost of the overall procedure. In this embodiment, in order to position the direction of the tool bit of the tool bar 21, the tail of the tool bar 21 has a positioning hole. In order to provide the knife bar 21, the inner wall of the inner sleeve 22 is provided withSupport structures such as plastic rings or the like to keep the central axis of the cutter bar 21 coincident with the central axis of the inner sleeve 22, and the cutter bar 21 is not in direct contact with the inner sleeve 22 during use to protect the cutter bar 21 and avoid noise. The inner sleeve 22 is wrapped on the outer side of the cutter bar 21, and one end of the inner sleeve is used for setting the traction recovery assembly 40. At least one plugging hole 221 is formed at one end of the inner sleeve 22 provided with the traction recovery assembly 40. In this embodiment, two plug holes 221 are formed at one end of the inner sleeve 22. The two plug holes 221 are symmetrically arranged with a cross section passing through the central axis of the inner sleeve 22 as a symmetry plane. In addition, the inner sleeve 22 further comprises two first deformation grooves 222. The two first deformation grooves 222 may be U-shaped grooves, and the alignment directions of the two first deformation grooves 222 are perpendicular to the alignment directions of the two plug holes 221, so that when the inner sleeve 22 is pressed along the alignment directions of the two plug holes 221, the diameter of the inner sleeve 22 at the position where the deformation grooves 222 are disposed can be reduced due to the existence of the first deformation grooves 222, thereby facilitating assembly, and the specific function thereof will be described below in conjunction with the traction recovery assembly 40. The outer sleeve 23 is sleeved outside the inner sleeve 22, one end of the outer sleeve is provided with a clamp (not shown), and the other end is provided with the rotating wheel assembly 30 and the traction recovery assembly 40. The relative position of the outer sleeve 23 and the rotary wheel assembly 30 is fixed, and the rotary wheel assembly 30 is fixed to the handle housing 10, so that the position of the outer sleeve 23 is relatively fixed in the axial direction thereof. In order to fix the relative position between the outer sleeve 23 and the rotating wheel assembly 30, two positioning holes 231 and two second deformation grooves 232 are also provided on both sides of one end of the outer sleeve 23. The arrangement direction of the two positioning holes 231 is perpendicular to the arrangement direction of the two second deformation grooves 232, so that when the outer sleeve 23 is extruded along the arrangement direction of the two positioning holes 231, the diameter of the outer sleeve 23 at the position where the second deformation grooves 232 are arranged can be reduced, thereby facilitating the sleeve joint assembly. The specific manner in which the outer sleeve 23 is secured to the rotatable wheel assembly 30 will be described in more detail below.

The rotary wheel assembly 30 is sleeved outside the cutter bar assembly 20, specifically, outside the outer sleeve 23. The rotary wheel assembly 30 includes a driving portion 31 sleeved on the outer sleeve 23, and at least one connecting portion 32 extending along an axial direction of the driving portion 31. A portion of the driving part 31 may be provided at the outside of the handle housing 10 to facilitate the user to rotate the rotary wheel assembly 30, thereby rotating the entire cutter bar assembly 20. In this embodiment, the rotating wheel assembly 30 has two connection portions 32, and the connection portions 32 cooperate with the traction recovery assembly 40 to drive the traction recovery assembly 40 to rotate with the rotating wheel assembly 30. Because the rotary wheel assembly 30 is fixedly connected with the inner and

outer sleeves

22, 23, and the clamps are arranged on the inner and

outer sleeves

22, 23, the clamps and the cutter head of the cutter bar 21 are in a certain radian, after assembly, the cambered surfaces of the clamps and the cutter head of the cutter bar 21 must be coincident, so that things can be clamped, otherwise, the clamp cannot be used. Therefore, the driving unit 31 is also provided with a positioning mark 311. When the positioning hole 231 is aligned with the positioning mark 311, it can be determined that the clamp coincides with the arc surface of the tool bit of the tool holder 21. In order to fix the relative position between the connecting portions 32 and the outer sleeve 23, each connecting portion 32 is provided with a positioning protrusion 33 extending toward the outer sleeve 23, and the positioning protrusions 33 are inserted into the positioning holes 231. When the outer sleeve 23 is inserted between the connection parts 32, the positioning protrusion 33 presses the outer sleeve 33, so that the second deformation groove 233 is deformed, and when the positioning protrusion 33 is inserted into the positioning hole 231, the outer sleeve 23 returns to the original position again, so that the relative position between the rotating wheel assembly 30 and the outer sleeve 23 is fixed.

The traction restoring assembly 40 includes a positioning cylinder 41 fixed to the inner sleeve 22, a clamping cylinder 42 fixed to the positioning cylinder 41, and a set of belleville spring sets 43 sleeved outside the positioning cylinder 41. The positioning cylinder 41 is a straight cylinder with a flange, and at least one inserting protrusion 411 is arranged on the inner side wall of the positioning cylinder. In this embodiment, two plugging protrusions 411 are disposed on the inner side wall of the positioning cylinder 41. When the positioning cylinder 41 is sleeved on the inner sleeve 22, the two inserting protrusions 411 press the inner sleeve 22 to deform the first deforming groove 222, and when the inserting protrusions 411 are inserted into the inserting holes 221, the inner sleeve 22 is restored, so that the positioning cylinder 41 is fixed on the inner sleeve 22. The clamping cylinder 42 is fixed on the positioning cylinder 41 in a bonding, screwing or other manner. In this embodiment, the clamping cylinder 42 is screwed to the positioning cylinder 41. The clamping cylinder 42 includes a clamping cylinder body and a flange disposed at one end of the clamping cylinder body. The clamping cylinder body is sleeved on the outer sleeve 23, and the flange is positioned between the clamping cylinder body and the positioning cylinder 41. At least one connecting groove is formed in the clamping cylinder body. In this embodiment, the clamping cylinder body is provided with two connecting grooves to mate with the two connecting portions 32. The two connecting portions 32 are respectively inserted into the two connecting grooves, so that when the rotating wheel assembly 30 rotates, the clamping cylinder 42 can be driven to rotate, and the traction recovery assembly 40 can be driven to rotate. The spring stack 43 may be composed of a plurality of belleville springs. The traction restoring assembly 40 functions to drive the inner sleeve 22 to restore to its original position when the user pulls the inner sleeve 22 toward the transducer 60 and when the user removes the external force, as is also known in the art and will not be described in detail herein.

The electrical connection assembly 50 includes positive and negative electrical contact pads 51, 52, respectively, disposed in the mounting slot 11 of the handle housing 10, and a positive and negative conductive ring assembly 53 that is sleeved over the transducer 60. The positive and negative electrical contact pieces 51, 52 may have the same structure, and the positive electrical contact piece 51 is merely described as an example. The positive contact piece 51 includes a body 511, and ears 512 provided on both sides of the body 511. The two ears 512 are inserted into the insertion holes 12 of the mounting groove 11. While the dimension of the body of the positive contact piece 51 along the two ears 512 is larger than the smallest dimension of the mounting groove 11 along the two ears 512, so that when the two ears 512 of the positive contact piece 51 are inserted into the insertion holes 12 of the mounting groove 11, the body of the positive contact piece 51 will bend, thereby forming an arc surface. The cambered surface protrudes from the mounting groove 11 so as to be electrically connected with the positive and negative electricity ring assemblies 53. Meanwhile, since the positive contact piece 51 has the cambered surface, it has a certain elasticity, and thus can be closely contacted with the positive and negative conductive ring components 53 to avoid virtual connection. It will be appreciated that the positive and negative electrical contacts 51, 52 are also electrically connected to two control switches so that when one of the two control switches is depressed, an electrical signal is fed into the positive and negative electrical contacts 51, 52 and then to the positive and negative conductive loop assembly 53 to form an electrical connection to control the transducer 60 to provide high frequency oscillating energy as required by the user.

The positive and negative conductive ring assembly 53 includes a positive conductive torch 531 connected to the positioning cylinder 41, a spacer ring 532 sleeved on the positive conductive torch 531, a negative conductive torch 533 sleeved on the spacer ring 532, and an assembly cylinder 534 fixed on the handle housing 10. The positive guide torch 531 is sleeved on the cutter bar 21 and is provided with at least two guide rods 5311 extending along the axial direction of the cutter bar 21. In this embodiment, four guide rods 5311 are disposed on the positive guide torch 531. Four of the guide rods 5311 are provided at equal angular intervals on the side wall of the positive guide torch 531 in the axial direction thereof. Accordingly, at least two guide holes 412 are provided on the axial side wall of the positioning cylinder 41. The guide rods 5311 are inserted in the corresponding guide holes 412. By the above structure, the positive and negative conductive ring members 53 can be rotated together with the positioning cylinder 41, but do not move in the axial direction. The isolating ring 532 is fixed on the positive conductive cylinder 531, and in order to make the outer sides of the positive and negative conductive ring assemblies 53 flush, the positive conductive cylinder 531, the isolating ring 532, the negative conductive cylinder 533, and the assembly cylinder are all stepped cylinders, so that the inner and outer sides can be ensured to be flush when sequentially inserted together. The spacer 532 is fixed to the positive conductive cylinder 531 by means of adhesive, and is rotatable with the positive conductive cylinder 531. The outer wall of the isolation ring 532 is provided with an external thread 5321, which is matched and fixed with the negative conductive torch 533, which will be described below. The negative conductive torch 533 is sleeved and fixedly arranged on the isolation ring 532. The negative conductive torch 533 is in electrical contact with the negative contact piece 52 for electrical connection. The negative conductive torch 533 comprises a negative conductive cylinder 5331, an internal thread section 5332 provided at one axial end of the negative conductive cylinder 5331, and a locking flange 5333 provided at the other axial end of the negative conductive cylinder 5331. The negative conductive cylinder 5331 is sleeved on the isolating ring 532. The internally threaded section 5332 is threadedly engaged with the externally threaded section 5321 to thereby complete the mutual securement. The snap-on flange 5333 projects in the direction of the assembly barrel 534 to mate with the assembly barrel 534. The assembly barrel 534 is fixedly connected to the negative conductive barrel 533 to thereby combine the positive and negative conductive ring assemblies 53 together. The outer sidewall of the assembly barrel 534 has a step such that the step forms a snap recess 5341 with the end face of the transducer 60. The clamping groove 5341 is coupled to the clamping flange 5333 to fix the position of the negative conductive barrel 533 in the axial direction with respect to the assembly barrel 534. During assembly, the clamp and the cambered surface of the cutter head of the cutter bar 21 are required to be coincident, so that the clamp can clamp things, otherwise, the clamp cannot be used. In the present invention, therefore, the cutter bar 21 is fixedly connected to the transducer 60, the transducer 60 is fixedly connected to the assembling cylinder 534, and the positive and negative conductive ring members 53 are fixedly connected to the outer sleeve 23, and the positive conductive torch 531 fixed to the transducer 60 is inserted into the guide hole 412 of the positioning cylinder 41 through the guide rod 5311 to fix the position in the radial direction. Therefore, through the structural design of the negative conductive torch 533, the tool bit of the tool bar 21 is first overlapped with the cambered surface of the clamp, even if the positioning hole 211 is aligned with the positioning mark 311, then the negative conductive torch 533 is rotated, during the screwing process of the inner and

outer thread sections

5332 and 5321, the clamping flange 5333 clamps the clamping groove 5341, and finally the guide rod 5311 of the positive conductive cylinder 531 is inserted into the guide hole 412 of the positioning cylinder 41, so that the positive conductive cylinder 531 is fixed on the assembling cylinder 534 and further fixed on the transducer 60, thereby ensuring that the tool bit of the tool bar 21 is overlapped with the cambered surface of the clamp. The assembly barrel 534 is also fixedly sleeved on the transducer 60, so that the transducer 60 can be driven to rotate together when the electrical connection assembly 50 rotates.

The transducer 60 is an energy conversion device that converts input electrical power into mechanical power (i.e., ultrasonic signals, above 20 kHz), which is known per se to those skilled in the art and will not be described in detail herein. The transducer 60 is connected to the cutter bar 21, and in particular, the transducer 60 includes a connecting rod 61, and the connecting rod 61 is screwed to the cutter bar 21 to connect the transducer 60 to the cutter bar 21. Simultaneously, the transducer 60 is also connected with the connecting rod 61 through threads, so that the purpose of connecting the transducer 60 with the cutter bar 21 is achieved.

In use, the user rotates the driving part 31 of the rotary wheel assembly 30, so that the driving part rotates together with the connecting part 32, and the outer sleeve 23 is fixedly connected with the connecting part 32, so that the outer sleeve 23 can be driven to rotate, and the connecting part 32 is fixed with the traction recovery assembly 40, so that the traction recovery assembly 40 is driven to rotate. When the traction recovery assembly 40 rotates, the positioning cylinder 41 drives the inner sleeve 22 to rotate, and the positioning cylinder 41 drives the electric connection assembly 50 to rotate, and the assembly cylinder 534 of the electric connection assembly 50 is fixedly connected with the transducer 60, so that the transducer 60 rotates along with the assembly cylinder 534. The transducer 60, when rotated, causes the knife bar 21 to rotate together.

Compared with the prior art, the knife bar 21 of the ultrasonic surgical knife capable of being stably and repeatedly used is directly and fixedly connected with the transducer 60, so that the knife bar 21 can be driven to rotate when the transducer 60 rotates. When the cutter bar 21 needs to be rotated, the inner and

outer sleeves

22, 23 are usually required to be rotated together, and the rotation of the inner and

outer sleeves

22, 23 is achieved by rotating the traction restoration assembly 40 by an external force, that is, when the clamping cylinder 42 is rotated under the action of the external force, the outer sleeve 23 is rotated, and the positioning cylinder 41 is also rotated together, and the positioning cylinder 41 drives the inner sleeve 22 to rotate, so that the purpose of rotating the inner and

outer sleeves

22, 23 together is achieved. Meanwhile, the electric connection assembly 50 is connected with the positioning cylinder 41, so that when the positioning cylinder 41 rotates, the electric connection assembly 50 can be driven to rotate together, the transducer 60 is fixedly connected with the electric connection assembly 50, the transducer 60 is driven to rotate, the transducer 60 is fixedly connected with the cutter bar 21, the cutter bar 21 is driven to rotate together, the purposes of rotating the inner sleeve 22, the outer sleeve 23 and the cutter bar 21 together are achieved, and the purpose of adjusting the direction of a cutter head is achieved. The cutter bar 21 and the inner and

outer sleeves

22, 23 rotate together without using any bolts in the prior art, so that no noise is generated when the cutter bar 21 works and vibrates at high frequency, and meanwhile, after the ultrasonic scalpel is used, the cutter bar 21 can be detached from the transducer 60, and cleaned and sterilized for reuse, thereby reducing the cost of the whole operation and further reducing the economic burden of patients.

The above is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions or improvements within the spirit of the present invention are intended to be covered by the claims of the present invention.

Claims

1. An ultrasonic surgical knife capable of being stably and repeatedly used, which is characterized in that: the utility model provides a can stabilize repeatedly's ultrasonic scalpel includes a handle shell, and an insert is established cutter arbor subassembly in the handle shell, a setting is in the traction recovery subassembly of one end of cutter arbor subassembly, an with traction recovery subassembly is connected electric connection subassembly, and one with cutter arbor subassembly and electric connection subassembly are connected transducer, cutter arbor subassembly includes a cutter arbor, and a cover is established the sleeve pipe on the cutter arbor, and a cover is established the outside of sleeve pipe and with this sleeve pipe fixed connection's outer tube, traction recovery subassembly includes a location section of thick bamboo that fixes on the sleeve pipe, and a clamping cylinder that is fixed with this location section of thick bamboo, the clamping cylinder cover is established and is fixed on the outer tube, electric connection subassembly includes two positive and negative electricity contact pieces that are fixed on the handle shell, and a cover is established positive and negative electricity ring subassembly, positive and negative electricity ring subassembly includes a positive electricity conductive torch that is connected with the location section of thick bamboo, a cover is established on the positive electricity isolation ring, and a cover is established in the sleeve pipe outside and be established and with this sleeve pipe fixed connection's the sleeve pipe, a positive electricity ring is established on the handle and two at least positive electricity conductive cylinder has a positive electricity conductive cylinder and a guide hole, two are connected with two positive electricity conductive cylinder at least one end of leading axial direction guide hole, at least are established respectively to be connected to positive electricity conductive cylinder and at least one end of leading tube is fixed along the guide hole.

2. The stably reusable ultrasonic surgical blade of claim 1, wherein: the handle shell is provided with two mounting grooves, and the positive and negative electric contact pieces are respectively clamped in the two mounting grooves.

3. The stably reusable ultrasonic surgical blade of claim 2, wherein: the positive and negative electric contact pieces are arc-shaped and protrude out of the mounting groove.

4. The stably reusable ultrasonic surgical blade of claim 1, wherein: the transducer includes a connecting rod that is threadably coupled to the arbor to couple the transducer to the arbor.

5. The stably reusable ultrasonic surgical blade of claim 1, wherein: the ultrasonic surgical knife capable of being stably and repeatedly used further comprises a rotary wheel assembly sleeved on the outer side of the cutter bar assembly, and the rotary wheel assembly is fixedly connected with the outer sleeve.

6. The stably reusable ultrasonic surgical blade of claim 5, wherein: the rotary wheel assembly comprises a driving part sleeved on the outer sleeve and at least one connecting part extending from the axial direction of the driving part, the clamping cylinder comprises a clamping cylinder body, at least one connecting groove is formed in the clamping cylinder body, and the connecting part is inserted into the connecting groove.

7. The stably reusable ultrasonic surgical blade of claim 6, wherein: the connecting part is provided with a positioning protrusion extending towards the outer sleeve, at least one positioning hole is formed in the outer sleeve, and the positioning protrusion is inserted into the positioning hole.

8. The stably reusable ultrasonic surgical blade of claim 1, wherein: when the traction recovery assembly rotates, the electric connection assembly rotates together and drives the transducer to rotate, and when the traction recovery assembly moves along the axial direction of the cutter bar, the electric connection assembly is fixed relative to the traction recovery assembly.

9. The stably reusable ultrasonic surgical blade of claim 1, wherein: the inner side wall of the positioning cylinder is provided with at least one plug-in protrusion, the inner sleeve is provided with at least one plug-in hole, and the plug-in protrusion is inserted into the plug-in hole.

10. The stably reusable ultrasonic surgical blade of claim 1, wherein: the negative conductive cylinder comprises a negative conductive cylinder body, an internal thread section arranged at one axial end of the negative conductive cylinder body, and a clamping flange arranged at the other axial end of the negative conductive cylinder body, wherein an external thread section coupled with the internal thread section is arranged on the outer wall of the isolating ring, a clamping groove clamped with the clamping flange is arranged on the outer wall of the assembly cylinder, and when the radial positions of the positive conductive torch and the positioning cylinder are fixed, the negative conductive torch is rotated to fix the axial positions of the assembly cylinder and the isolating ring.