CN211704767U

CN211704767U - Torsion locking device on ultrasonic knife and ultrasonic knife

Info

Publication number: CN211704767U
Application number: CN202020164052.3U
Authority: CN
Inventors: 毛训根; 陆春明; 侯仲麟
Original assignee: Suzhou Youmai Medical Technology Co ltd
Current assignee: Suzhou Youmai Medical Technology Co ltd
Priority date: 2020-02-12
Filing date: 2020-02-12
Publication date: 2020-10-20
Anticipated expiration: 2030-02-12

Abstract

The application provides a torsion locking device on an ultrasonic knife, which comprises a steering wheel, a shifting wheel and a rotating shaft; the steering wheel is provided with a steering wheel inner cavity, and a plurality of torsion clamping grooves are uniformly distributed in the steering wheel inner cavity; the poking wheel is provided with a poking wheel inner cavity, a plurality of elastic pawls are uniformly distributed on the periphery of the poking wheel, and pawl end parts of the elastic pawls are matched with the torque clamping grooves; at least one clamping block is arranged in the inner cavity of the shifting wheel; the rotating shaft penetrates through the inner cavity of the shifting wheel, a clamping groove matched with the clamping block is formed in the rotating shaft, and the rotating shaft is fixedly connected with a cutter bar of the ultrasonic knife. This application is through establishing the thumb wheel cover inside turning round to through be equipped with on the rotation axis with joint piece assorted joint groove, make torsion locking device's compact structure simple, simple to operate and locking device are difficult for losing.

Description

Torsion locking device on ultrasonic knife and ultrasonic knife

Technical Field

The utility model relates to a medical instrument especially relates to a torsion locking device and supersound sword on supersound sword.

Background

The ultrasonic knife utilizes the extremely strong penetrating power of ultrasonic waves, hundreds of beams of high-energy ultrasonic waves emitted by an ultrasonic transducer (a sound wave generator) converge a focus on tissue like solar energy, the cavitation action of the high-energy ultrasonic waves is utilized to break the cell membrane of the tissue, simultaneously, the high-energy ultrasonic waves release huge energy and are quickly converted into heat energy, and the temperature of human tissue at the focus is instantly 70-100 ℃, so that the cutting is carried out. Compared with common scalpels and other energy surgical equipment, the ultrasonic cutting hemostatic knife has the advantages of high surgical precision, simple and convenient operation, small surgical wound area, no smoke, less bleeding, short surgical time, high postoperative recovery speed and the like, and is widely applied to internal medicine surgery.

The existing ultrasonic knife mainly comprises an ultrasonic transducer and a waveguide rod carrying a knife head. The ultrasonic transducer converts an ultrasonic frequency electric signal generated by a main machine of the ultrasonic knife into ultrasonic frequency mechanical vibration and transmits mechanical waves to the waveguide rod through the front end of the ultrasonic transducer. However, mechanical waves propagate along the waveguide rod, and mechanical fatigue is easily generated at the tool bit with multiple geometrical deformations due to mechanical vibration of ultrasonic frequency, so the waveguide rod with the tool bit is set as a disposable consumable, and the transducer is set as a material with a certain number of times. Thus, the two are separate and require assembly prior to surgical use. In order to facilitate the assembly of the ultrasonic transducer and the waveguide rod, a torsion locking device integrally formed with the ultrasonic blade is generally arranged on the conventional ultrasonic blade. For example, patent No. CN201820854239.9 discloses a torque force locking device and ultrasonic scalpel system, the torque force locking device includes locking wrench and thumb wheel, locking wrench and thumb wheel plug-in connection, and be provided with first pawl and second pawl that can butt each other and slippage each other in grafting department, through utilizing first pawl and the mutual butt of second pawl, can utilize locking wrench drive thumb wheel rotatory, and then drive with thumb wheel fixed connection by the tightening piece rotatory, reach the purpose of screwing up. Through setting up first pawl on the shell fragment, when being screwed up the piece and reaching preset tightening force, under the effect of shell fragment, first pawl and second pawl slippage to avoid continuing to screw up the damage of the piece of being screwed up that causes and torsion locking device.

However, in the prior art, the locking of the transduction handle and the cutter head needs a special torque wrench for locking and dismounting, because the wrench and the product are not integrated and are easy to lose, and the spring structure for limiting the torque in the prior art is not stable and reasonable enough, if the instantaneous torque caused by sudden rotation is increased, so that the pawl is slipped and then subsequently continuously twisted, the pawl cannot be guaranteed. Therefore, it is desirable to provide a torque locking device which has a compact structure and a reasonable layout and can stably realize locking.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a torsion locking device about can stably realize locking for solve among the prior art torsion locking device easily lose, technical problem such as unstable structure.

The specific contents for realizing the utility model are as follows:

a torsion locking device on an ultrasonic knife comprises a steering wheel, a shifting wheel and a rotating shaft; the steering wheel is provided with a steering wheel inner cavity, and a plurality of torsion clamping grooves are uniformly distributed in the steering wheel inner cavity; the poking wheel is provided with a poking wheel inner cavity, a plurality of elastic pawls are uniformly distributed on the periphery of the poking wheel, and pawl end parts of the elastic pawls are matched with the torque clamping grooves; at least one clamping block is arranged in the inner cavity of the shifting wheel; the rotating shaft penetrates through the inner cavity of the shifting wheel, a clamping groove matched with the clamping block is formed in the rotating shaft, and the rotating shaft is fixedly connected with a cutter bar of the ultrasonic knife.

Furthermore, the elastic pawl further comprises an elastic connecting rod, and the end part of the pawl is connected with the periphery of the thumb wheel through the elastic connecting rod.

Further, the circumferential distance between the ends of two adjacent pawls is an integral multiple of the circumferential distance between two adjacent torque slots.

Further, the elastic connecting rod is provided with a horizontal part, and a gap is formed between the inner surface of the horizontal part and the periphery of the thumb wheel.

Furthermore, the clamping blocks are two and are symmetrically arranged.

Furthermore, one side of the torque clamping groove is a vertical surface, the other side of the torque clamping groove is an inclined surface, and the end part of the pawl is provided with an inclined surface matched with the inclined surface of the torque clamping groove.

Additionally, the utility model provides an supersound sword with torsion locking device, including cutter arbor, transducer and aforementioned torsion locking device, the cutter arbor is located in the rotation axis and with rotation axis fixed connection, cutter arbor one end is equipped with the screw thread chamber, transducer one end be equipped with screw thread chamber assorted screw thread post.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

1) according to the torsion locking device, the shifting wheel is sleeved inside the steering torsion, and the clamping groove matched with the clamping block is formed in the rotating shaft, so that the torsion locking device is compact and simple in structure, convenient to install and not easy to lose;

2) through the structural improvement of the pawl and the matching relationship with the plurality of torque clamping grooves, even if the pawl is disengaged due to sudden torque increase, the pawl can be clamped and matched with the next torque clamping groove in time;

3) the pawl is provided with an elastic connecting rod with a horizontal part, and a gap exists between the inner surface of the horizontal part and the periphery of the thumb wheel, so that the pawl is convenient to retract when the pawl is disengaged, the thumb wheel is convenient to rotate, and clamping stagnation is avoided.

Drawings

FIG. 1 is a schematic view of a structure of a steering button according to the present invention;

FIG. 2 is a schematic view of the structure of the parts of the thumb wheel of the present invention;

FIG. 3 is a schematic structural view of the steering button and the dial wheel after the assembly of the present invention;

fig. 4 is a schematic cross-sectional structure diagram of the ultrasonic scalpel of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Example (b):

as shown in fig. 1-4, the present embodiment provides a torque locking device on an ultrasonic scalpel, which includes a steering wheel 1, a thumb wheel 2 and a rotating shaft 3; the steering wheel 1 is provided with a steering wheel inner cavity 11, and a plurality of torque clamping grooves 12 are uniformly distributed in the steering wheel inner cavity 11; the thumb wheel 2 is provided with a thumb wheel inner cavity 21, a plurality of elastic pawls 22 are uniformly distributed on the periphery of the thumb wheel 2, and pawl end portions 23 of the elastic pawls 22 are matched with the torque clamping grooves 12; the inner cavity 21 of the shifting wheel is provided with at least one clamping block 25; the rotating shaft 3 penetrates through the inner cavity 21 of the thumb wheel, a clamping groove matched with the clamping block 25 is formed in the rotating shaft 3, the rotating shaft 3 is used for being fixedly connected with a cutter bar of the ultrasonic knife, the thumb wheel 2 is sleeved inside the steering knob 1, and the clamping groove matched with the clamping block 25 is formed in the rotating shaft 3, so that the torsion locking device is compact and simple in structure and convenient to install, and the locking device is not easy to lose;

specifically, the elastic pawl 22 further includes an elastic connecting rod 24, the pawl end portions 23 are connected to the outer periphery of the thumb wheel 2 through the elastic connecting rod 24, the circumferential distance between two adjacent pawl end portions 23 is an integral multiple of the circumferential distance between two adjacent torque slots 12, where the circumferential distance can be understood by referring to fig. 3, that is, when two pawl end portions 23 are clamped in the torque slots 12, since the distance along the circumference of the top of the pawl end portion 23 is exactly an integral multiple of the distance along the circumference of the top of the torque slot 12, which is 3 times in this embodiment, since the torque slots 12 are uniformly distributed, when the steering button 1 and the thumb wheel 2 rotate relatively, the pawl end portions 23 are disengaged from the torque slots 12, and the next clamping is still that the plurality of pawl end portions 23 are just clamped in the torque slots 12.

In this embodiment, the elastic connecting rod 24 has a horizontal portion, and there is a gap between the inner surface of the horizontal portion and the periphery of the thumb wheel 2, as shown in fig. 2, after the elastic pawl 22 extends partially in the vertical direction of the circumference of the thumb wheel 2, it extends to one side through the horizontal portion, and it extends into the torque slot 12 through the pawl end portion 23, because of the gap, after the elastic pawl 22 is deformed by pressure, the horizontal portion is pressed downward to be deformed, and the gap makes the horizontal portion have a certain deformation allowance, so that the pawl end portion 23 can exit from the torque slot 12.

Specifically, the clamping blocks 25 are two and symmetrically arranged, so that the connection between the thumb wheel and the rotating shaft 3 is more stable.

Specifically, one side of the torque slot 12 is a vertical surface, and the other side is an inclined surface, and the pawl end 23 has an inclined surface matching the inclined surface of the torque slot 12, so as to facilitate disengagement.

Example 2

As shown in fig. 4, in another embodiment, an ultrasonic scalpel with a torsion locking device is further provided, which includes a blade bar 4, a transducer 5 and the torsion locking device mentioned in embodiment 1, and other components included in the prior art are not described herein again, the blade bar 4 is disposed in the rotating shaft 3 and is fixedly connected to the rotating shaft 3, a threaded cavity 41 is disposed at one end of the blade bar 4, and a threaded post 51 matched with the threaded cavity 41 is disposed at one end of the transducer 5.

As can be understood from the explanation of the above embodiments, the present invention has the following advantages compared with the prior art:

2) because the distance along the circumference of the top of the pawl end part is exactly the integral multiple of the distance along the circumference of the top of the torque clamping groove, the torque clamping grooves 12 are uniformly distributed, when the steering button and the dial wheel rotate relatively, after the pawl end part is separated from the torque clamping groove, the next clamping is still that the plurality of pawl end parts 23 are exactly clamped in the torque clamping groove.

3) After the elastic pawl extends a part of the elastic pawl from the vertical direction of the circumferential direction of the thumb wheel, the horizontal part extends to one side, the end part of the elastic pawl extends to the torque clamping groove, and due to the existence of the gap, after the elastic pawl deforms under pressure, the horizontal part deforms under pressure, and the gap enables the horizontal part to have a certain deformation allowance, so that the end part of the elastic pawl can exit the torque clamping groove conveniently.

As described above, the present invention has been explained in full in accordance with the gist of the present invention, but the present invention is not limited to the above-described embodiments and implementation methods, and features of the embodiments may be combined with each other without contradiction. The practitioner of the related art can make various changes and implementations within the scope permitted by the technical idea of the present invention.

Claims

1. A torsion locking device on an ultrasonic knife is characterized by comprising a steering wheel (1), a poking wheel (2) and a rotating shaft (3); the steering wheel (1) is provided with a steering wheel inner cavity (11), and a plurality of torque force clamping grooves (12) are uniformly distributed in the steering wheel inner cavity (11); the poking wheel (2) is provided with a poking wheel inner cavity (21), a plurality of elastic pawls (22) are uniformly distributed on the periphery of the poking wheel (2), and pawl end parts (23) of the elastic pawls (22) are matched with the torque clamping grooves (12); the inner cavity (21) of the shifting wheel is provided with at least one clamping block (25); the rotating shaft (3) penetrates through the inner cavity (21) of the shifting wheel, a clamping groove matched with the clamping block (25) is formed in the rotating shaft (3), and the rotating shaft (3) is fixedly connected with a cutter bar of the ultrasonic knife.

2. The torsion lock apparatus on an ultrasonic blade according to claim 1, wherein the elastic pawl (22) further comprises an elastic link (24), and the pawl end (23) is connected to the outer periphery of the thumb wheel (2) through the elastic link (24).

3. The torsion locking device on an ultrasonic blade according to claim 2, wherein the circumferential distance of two adjacent pawl ends (23) is an integer multiple of the circumferential distance of two adjacent torsion pockets (12).

4. The torsion locking device on an ultrasonic blade according to claim 3, wherein the elastic link (24) has a horizontal portion, and an inner surface of the horizontal portion has a gap with an outer periphery of the thumb wheel (2).

5. The torsion locking device on an ultrasonic scalpel according to claim 1, wherein the clamping blocks (25) are two and symmetrically arranged.

6. The torsion lock on an ultrasonic blade according to claim 1, wherein one side of the torsion notch (12) is a vertical surface and one side is an inclined surface, and the pawl end (23) has an inclined surface matching the inclined surface of the torsion notch (12).

7. An ultrasonic scalpel with a torsion locking device, which is characterized by comprising a toolbar (4), an energy converter (5) and the torsion locking device as claimed in any one of claims 1 to 6, wherein the toolbar (4) is arranged in the rotating shaft (3) and is fixedly connected with the rotating shaft (3), a threaded cavity (41) is arranged at one end of the toolbar (4), and a threaded column (51) matched with the threaded cavity (41) is arranged at one end of the energy converter (5).