CN216535439U

CN216535439U - Ultrasonic surgical instrument

Info

Publication number: CN216535439U
Application number: CN202122331077.5U
Authority: CN
Inventors: 刘青; 姚银峰; 周晴杰; 顾林飞
Original assignee: Panther Healthcare Suzhou Technology Co ltd
Current assignee: Panther Healthcare Suzhou Technology Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-05-17
Anticipated expiration: 2031-09-26

Abstract

The utility model discloses an ultrasonic surgical instrument which comprises a waveguide rod, a waveguide rod outer tube, a driving handle and a cutter head assembly, wherein the cutter head assembly comprises a clamping pad and a cutter point, the near end of the clamping pad is movably connected with the near end of the cutter point, the far end of the clamping pad and the far end of the cutter point can move relatively to close and open, the waveguide rod is accommodated in the waveguide rod outer tube, the near end of the waveguide rod is connected with the far end of the driving handle, the far end of the waveguide rod is movably connected with the near end of the cutter head assembly, and at least part of the near end of the cutter head assembly is accommodated in the waveguide rod outer tube. The ultrasonic surgical instrument disclosed by the utility model can replace the damaged part, thereby further prolonging the service life of the whole cutter head and reducing the processing and manufacturing cost.

Description

Ultrasonic surgical instrument

Technical Field

The utility model relates to the field of medical instruments, in particular to an ultrasonic surgical instrument.

Background

The ultrasonic cutting hemostatic scalpel is a medical instrument which is high in use frequency and applied to chest and abdomen surgery, the instrument integrates separation, cutting and hemostasis, the configuration and replacement of instruments in surgery are reduced, the surgery time is greatly shortened, small blood vessels can be sealed while tissues are cut, bleeding in surgery is obviously reduced, the cutting precision is high, eschar and smoke are generated rarely, the safety is high when important visceral organs and the nearby parts of large blood vessels are separated and cut, no current passes through an organism in a system, conductive tissue damage cannot occur, and the surgery safety is improved.

In the ultrasonic surgical instrument ultrasonic scalpel product on the market at present, as shown in fig. 1, mainly includes: the machine comprises a main machine (1), a driving handle (2), a cutter head (3) and a pedal (4). The main machine (1) is respectively connected with one end of the pedal (4) and one end of the driving handle (2) through connecting wires, the other end of the driving handle (2) is connected with the cutter head (3), a transducer (not shown in figure 1) is arranged inside the driving handle (2), the transducer converts high-frequency electric energy provided by the main machine (1) into ultrasonic mechanical vibration energy, transmits the ultrasonic mechanical vibration energy to the cutter head (3) and simultaneously transmits ultrasonic energy, and blood stopping cutting or coagulation is carried out on tissues, and the vibration frequency of the cutter head is about 55.5 kHz.

The far end of the cutter head (3) of the ultrasonic knife is similar to a pair of scissors and is provided with two ends, one end is a cutter tip end (31) for applying ultrasonic waves, the other end is a clamping pad (32) with insections, when tissue is clamped, the clamping pad (32) is close to the cutter tip end (31), when the tissue is released, the clamping pad (32) is far away from the cutter tip end (31), and the clamping pad (32) can better clamp the tissue to strengthen the blood coagulation effect.

At present, the operator is at the actual operation in-process, when the centre gripping tissue, the centre gripping pad is close to the sword point end, and the knife tip end needs to bear the pressure that comes from the centre gripping pad, can apply certain degree load again under high frequency oscillation to can produce higher load to the knife tip, because the difference of cutting gimmick and cutting tissue, so the knife tip end cracks easily, produces certain degree wearing and tearing, thereby leads to whole tool bit to become invalid, more has the fracture of knife tip end distal end to get into human internal, arouse the risk of surgical accident.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that in the prior art, the knife tip end cracks along with the increase of the vibration frequency of a surgical instrument in the surgical process, so that the surgical risk is caused.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows:

the utility model provides an ultrasonic surgical instrument, includes waveguide pole, waveguide pole outer tube, drive handle, tool bit subassembly, the tool bit subassembly includes centre gripping pad and knife tip, the near-end of centre gripping pad with the near-end swing joint of knife tip, the distal end of centre gripping pad with but the distal end relative motion of knife tip is closed and is opened, waveguide pole outer tube is inside to be held the waveguide pole, the near-end of waveguide pole with the distal end of drive handle is connected, its characterized in that, the distal end of waveguide pole with the connection can be dismantled to tool bit subassembly near-end, waveguide pole outer tube is inside to hold at least part the near-end of tool bit subassembly.

Further, the far end of the waveguide rod is in threaded connection with the near end of the cutter head assembly, and the distance between the connection position and the first nodal point of the working end of the cutter head assembly is larger than 10 mm.

Further, the device also comprises a screw rod used for connecting the far end of the waveguide rod and the near end of the cutter head component; the inner surface of the far end of the waveguide rod is provided with a first internal thread, the inner surface of the near end of the cutter head component is provided with a second internal thread, and threads on the outer surface of the screw rod are respectively matched with the first internal thread and the second internal thread.

Further, the device also comprises a nut which is used for connecting the far end of the waveguide rod and the near end of the cutter head component; the outer surface of the far end of the wave guide rod is provided with a third external thread, the outer surface of the near end of the cutter head component is provided with a fourth external thread, and threads on the inner surface of the nut are respectively matched with the third external thread and the fourth external thread.

Furthermore, two first grooves are formed in the outer surface of the far end of the waveguide rod, and the depth of each first groove is smaller than the thickness of the surface of the waveguide rod.

Further, the two first grooves are symmetrically arranged on the outer surface of the far end of the waveguide rod.

Further, the two first grooves are asymmetrically arranged on the outer surface of the distal end of the waveguide rod.

Further, two second grooves are formed in the outer surface of the proximal end of the cutter head component, and the depth of each second groove is smaller than the thickness of the surface of the cutter head component.

Further, the two second grooves are symmetrically arranged on the outer surface of the proximal end of the cutter head component.

Further, the two second grooves are asymmetrically arranged on the outer surface of the proximal end of the cutter head component.

After adopting such design, the utility model has at least the following advantages:

(1) according to the technical scheme disclosed by the utility model, the waveguide rod and the cutter head component are detachably connected, so that different cutter head components can be replaced according to needs, and a stable operation environment is provided for an operation.

(2) According to the technical scheme disclosed by the utility model, the waveguide rod and the cutter head assembly are detachably connected, so that the part difficult to machine at the cutter point is separated, mass production and machining can be realized, mass production can be realized, and the efficiency is higher.

(3) The utility model has simple structure, reduces the cost of purchasing parts by enterprises, reduces the operation cost of patients, has good effect and low cost, and is easy to realize the process.

Drawings

The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.

FIG. 1 is a block diagram of a prior art ultrasonic surgical instrument system;

FIG. 2 is a schematic view of the ultrasonic surgical instrument of the present invention;

FIG. 3 is a schematic view of the wave guide rod and tool tip assembly of the present invention;

FIG. 4 is an enlarged schematic view of the wave guide rod and tool tip assembly of the present invention;

FIG. 5 is an exploded view of the wave guide rod and tool bit assembly of the present invention in connection;

in the reference numbers, 1 host, 2 drive handle, 3 cutter head, 4 foot pedals, 31 cutter tip, 32 clamping pad, 11 waveguide rod, 111 first groove, 12 waveguide rod outer tube, 13 drive handle, 14 cutter head component, 141 clamping pad, 142 cutter tip, 143 second groove, and 15 screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In this document, "upper", "lower", and the like are used only to indicate relative positional relationships between the relevant portions, and are not limited to absolute positions of the relevant portions.

Unless otherwise indicated, numerical ranges herein include not only the entire range within its two endpoints, but also several sub-ranges subsumed therein.

Hereinafter, the end of each member closer to the operator is defined as a proximal end, and the end farther from the operator is defined as a distal end. The expressions proximal and distal are only used for simplicity and clarity of description and should not be construed as limiting the utility model in any way.

The cutter head of the ultrasonic cutting hemostatic cutter is always in a high-frequency vibration state when in work, the frequency can reach 55KHz, and the waveguide rod is slender, so that on one hand, the requirement of the transmission of ultrasonic energy on the fatigue resistance of a transmitted carrier material is high, on the other hand, as a medical instrument for a straight-time operation, the working end of the medical instrument is directly contacted with the tissues in the human body, and the material contacted with the tissues in the human body needs to accord with biocompatibility, so that titanium alloy is generally selected as a medium for transmitting ultrasonic energy in the industry. At present, in the market, a material processing technology can meet the requirement that a cutter head can be normally used in one operation, but after the cutter head is used for multiple times, the cutter tip end can be abraded to a certain degree, and then the using effect is influenced.

Most of the existing ultrasonic knives on the market belong to disposable sterile products, the service life of the knife head can meet the time requirement of one operation, and for the disposable products, if the operation cost of a patient is further reduced and the consumption of materials is reduced, the knife head can be sterilized for multiple times for use on the premise of ensuring the safety of the products in the future. However, due to the operating characteristics of ultrasonic blades, repeated use may place higher performance demands on the blade tip. Through analysis of the reasons for the tool bit failure, the research and development personnel find that the most reason for the tool bit failure is due to the fact that the waveguide tube has cracks, and the place where the cracks are easy to generate is the position of the tool tip.

In view of the above, the present invention provides an ultrasonic surgical instrument, and fig. 2 to 5 show an embodiment of the ultrasonic surgical instrument according to the present invention.

Referring to fig. 2 to 5, an embodiment of the present invention provides an ultrasonic surgical device, including a waveguide rod 11, a waveguide rod outer tube 12, a driving handle 13, and a cutter head assembly 14, where the cutter head assembly includes a clamping pad 141 and a cutter tip 142, a proximal end of the clamping pad 141 is movably connected to a proximal end of the cutter tip 142, a distal end of the clamping pad 141 and a distal end of the cutter tip 142 are movable relative to each other to perform a closing and opening motion, the waveguide rod outer tube 12 accommodates the waveguide rod 11 therein, a proximal end of the waveguide rod 11 is connected to the distal end of the driving handle 13, the distal end of the waveguide rod 11 is detachably connected to the proximal end of the cutter head assembly 14, and at least a portion of the proximal end of the cutter head assembly 14 is accommodated in the waveguide rod outer tube 12.

In the ultrasonic surgical device according to the embodiment of the present invention, the distal end of the waveguide rod 11 and the proximal end of the cutter head assembly 14 are separate and independent from each other, and are detachably connected to each other. When the waveguide rod is installed, the far end of the waveguide rod 11 is fixedly connected with the near end of the cutter head assembly 14, the far end of the clamping pad 141 moves towards the direction of the cutter tip 142, the clamping pad 141 and the cutter tip 142 are closed, the waveguide rod outer tube 12 is sleeved on the waveguide rod 11 and the cutter head assembly 14, and the near end of the waveguide rod outer tube 12 is connected with the far end of the driving handle 13, so that the installation is completed.

In an embodiment of the present invention, the proximal end of the cutting head assembly 14 can partially enter the interior of the outer tube 12 of the waveguide rod as required, at least if the jaw assembly is exposed at the distal end of the outer tube 12 of the waveguide rod.

In the technical scheme provided by the utility model, the far end of the waveguide rod 11 and the near end of the cutter head component 14 are detachably connected, so that a damaged part can be replaced after the working end of the cutter head is seriously abraded or cracks appear, the service life of the whole cutter head is further prolonged, the processing difficulty is reduced, the purchase part cost of an enterprise is greatly reduced, and the operation cost of a patient is further reduced. In addition, the easily damaged end of the surgical instrument is replaced, so that other parts of the waveguide rod can be repeatedly used, the consumption of materials is reduced, and the effect of environmental protection is achieved.

Further, the far end of the waveguide rod is in threaded connection with the near end of the cutter head component.

In an embodiment of the present invention, the ultrasonic surgical device further includes a screw rod 15 for connecting the distal end of the waveguide rod 11 and the proximal end of the cutter head assembly 14, wherein the inner surface of the distal end of the waveguide rod 11 is provided with a first internal thread, the inner surface of the proximal end of the cutter head assembly 14 is provided with a second internal thread, and the threads of the outer surface of the screw rod 15 are respectively matched with the first internal thread and the second internal thread.

In order to reduce the cost, the inventor discovers that the screw rod is connected in a multi-time experiment mode, and the processing mode is convenient, convenient to install and very convenient.

In an embodiment of the present invention, the ultrasonic surgical device may further include a nut for connecting the distal end of the waveguide rod 11 and the proximal end of the cutter head assembly 14, wherein the outer surface of the distal end of the waveguide rod 11 is provided with a third external thread, the outer surface of the proximal end of the cutter head assembly 14 is provided with a fourth external thread, and the threads of the inner surface of the nut are respectively matched with the third external thread and the fourth external thread.

To facilitate the fixation of the screw 15, the outer surface of the distal end of the waveguide rod 11 is provided with two first grooves. When the screw rod 15 and the far end of the waveguide rod 11 need to be installed or detached, an installer can well clamp the outer surface of the far end of the waveguide rod through the first groove, and the installer can conveniently operate the screw rod 15.

Of course, the two first grooves may be symmetrically disposed on the outer surface of the distal end of the waveguide rod 11 according to the requirement, or the two first grooves may be asymmetrically disposed on the outer surface of the distal end of the waveguide rod 11, which is not described herein.

In one embodiment of the present invention, to facilitate securing the screw 15, the outer surface of the proximal end of the cutter head assembly 14 is provided with two second grooves. When the screw rod 15 and the far end of the waveguide rod 11 need to be installed or detached, an installer can well clamp the outer surface of the far end of the waveguide rod 11 through the second groove, and the installer can conveniently operate the screw rod 15.

Of course, the two second grooves may be symmetrically disposed on the outer surface of the proximal end of the cutter head assembly 14 according to the requirement, or the two second grooves may be asymmetrically disposed on the outer surface of the proximal end of the cutter head assembly 14, which is not described herein.

The depth of the first groove is less than the thickness of the outer surface of the distal end of the waveguide rod 11, and the depth of the second groove is less than the thickness of the outer surface of the proximal end of the cutter head assembly 14.

The utility model has simple structure, reduces the cost of purchasing parts by enterprises, reduces the operation cost of patients, has good effect and low cost, and is easy to realize the process.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

It will be understood that the utility model is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims

1. The utility model provides an ultrasonic surgical instrument, includes waveguide pole, waveguide pole outer tube, drive handle, tool bit subassembly, the tool bit subassembly includes centre gripping pad and knife tip, the near-end of centre gripping pad with the near-end swing joint of knife tip, the distal end of centre gripping pad with but the distal end relative motion of knife tip is closed and is opened, waveguide pole outer tube is inside to be held the waveguide pole, the near-end of waveguide pole with the distal end of drive handle is connected, its characterized in that, the distal end of waveguide pole with the connection can be dismantled to tool bit subassembly near-end, waveguide pole outer tube is inside to hold at least part the near-end of tool bit subassembly.

2. The ultrasonic surgical device of claim 1, wherein the distal end of the waveguide rod is threadably coupled to the proximal end of the blade assembly at a distance greater than 10 mm from the first nodal point at the working end of the blade assembly.

3. The ultrasonic surgical device of claim 2, further comprising a threaded rod for connecting the distal end of the waveguide shaft to the proximal end of the blade assembly; the inner surface of the far end of the waveguide rod is provided with a first internal thread, the inner surface of the near end of the cutter head component is provided with a second internal thread, and threads on the outer surface of the screw rod are respectively matched with the first internal thread and the second internal thread.

4. The ultrasonic surgical device of claim 2, further comprising a nut for connecting the distal end of the waveguide shaft to the proximal end of the blade assembly; the outer surface of the far end of the wave guide rod is provided with a third external thread, the outer surface of the near end of the cutter head component is provided with a fourth external thread, and threads on the inner surface of the nut are respectively matched with the third external thread and the fourth external thread.

5. The ultrasonic surgical device of claim 3, wherein the outer surface of the distal end of the waveguide rod is provided with two first grooves, the first grooves having a depth less than the thickness of the surface of the waveguide rod.

6. The ultrasonic surgical device of claim 5, wherein the two first grooves are symmetrically disposed on an outer surface of the distal end of the waveguide rod.

7. The ultrasonic surgical instrument of claim 5, wherein the two first grooves are asymmetrically disposed on the outer surface of the distal end of the waveguide rod.

8. The ultrasonic surgical device of claim 3 or 5, wherein the outer surface of the proximal end of the blade assembly is provided with two second grooves, the depth of the second grooves being less than the thickness of the surface of the blade assembly.

9. The ultrasonic surgical device of claim 8, wherein the two second grooves are symmetrically disposed on the outer surface of the proximal end of the blade assembly.

10. The ultrasonic surgical device of claim 8, wherein the two second grooves are asymmetrically disposed on the outer surface of the proximal end of the blade assembly.