CN111035435B

CN111035435B - Connecting mechanism of ultrasonic knife and transducer and ultrasonic knife adopting connecting mode of connecting mechanism

Info

Publication number: CN111035435B
Application number: CN201910909335.8A
Authority: CN
Inventors: 黄文星; 张苗
Original assignee: Surgnova Healthcare Technologies (zhejiang) Co ltd
Current assignee: Surgnova Healthcare Technologies (zhejiang) Co ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2021-04-23
Anticipated expiration: 2039-09-24
Also published as: CN111035435A

Abstract

A connecting mechanism of an ultrasonic knife and a transducer and the ultrasonic knife adopting the connecting mode are provided. The connection mechanism of the present invention comprises: the turnplate is screwed up and has a rotator structure, and the ultrasonic knife is sleeved on the axis of the turnplate; one end of the tightening turntable is provided with a thread or a clamping structure and is used for being connected with the handle part of the ultrasonic knife containing the transducer, and the other end of the tightening turntable is a limiting plane which is provided with a plurality of grooves and is used for being matched with a torsion pin arranged on the rotating cap; the rotating cap is of a rotating body structure, and a through hole for the ultrasonic knife to pass through is formed in the axis of the rotating cap; one side towards screwing up the carousel is provided with a plurality of torsion pins that stretch out the surface through the spring support, and torsion pin can compress the spring and retract the surface under the atress effect. The connecting mechanism is integrated with the ultrasonic knife, so that the operation steps of installation and removal are omitted, the risk of loss is avoided, the torsion value is stable and reliable, and the service life is longer.

Description

Connecting mechanism of ultrasonic knife and transducer and ultrasonic knife adopting connecting mode of connecting mechanism

Technical Field

The invention relates to the technical field of medical instruments, in particular to a connecting mechanism of an ultrasonic knife and a transducer and the ultrasonic knife adopting the connecting mode.

Background

In the application technology of the ultrasonic knife, the knife head and the transducer of the ultrasonic knife are of a split structure and are connected through the threaded connector, the tightening force needs to be controlled within a certain range during connection, otherwise the ultrasonic knife cannot work normally, and the knife head or the transducer can be seriously damaged. The common fastening mode is to add a set of plastic torque wrench, the torque wrench is composed of a knob body and a rotating shaft, and the plastic elastic deformation on the rotating shaft is pressed by the knob body in the using process to control the magnitude of the tightening force.

In the process of implementing the present invention, the inventor finds that the prior art has the following technical defects:

(1) each ultrasonic knife is provided with a torque wrench, so that the cost of the instrument is increased;

(2) the torque wrench is installed and removed from the front end of the instrument, so that the operation is inconvenient;

(3) the torque wrench needs to be kept properly in the using process or is easy to lose, and is very inconvenient in use;

(4) the torque wrench is provided with torque force by plastic elastic deformation, the torque force value is unstable, the torque force value is smaller and smaller after multiple times of use, and the plastic elastic sheet is easy to break;

(5) because the torque wrench is an independent accessory, the wrench can be forgotten to be sterilized in the sterilization process of the ultrasonic knife, so that the ultrasonic knife cannot be connected according to the set requirement, and inconvenience is brought.

Disclosure of Invention

In view of the above, the present invention provides a connecting mechanism for an ultrasonic blade and a transducer and an ultrasonic blade using the connecting mechanism, so as to at least partially solve at least one of the above technical problems.

In order to achieve the above object, as one aspect of the present invention, there is provided an ultrasonic blade and transducer connecting mechanism comprising:

the tightening turntable is a rotator structure taking the insertion direction of the ultrasonic knife as an axis, a through hole is formed in the axis and is sleeved with the ultrasonic knife, and the ultrasonic knife can synchronously rotate along with the tightening turntable through a pin or a clamping structure; one end of the tightening turntable is provided with a thread or a clamping structure and is used for being connected with the handle part of the ultrasonic knife containing the transducer, and the other end of the tightening turntable is a limiting plane which is provided with a plurality of grooves and is used for being matched with a torsion pin arranged on the rotating cap;

the rotating cap is a rotating body structure taking the insertion direction of the ultrasonic knife as an axis, and the axis forms a through hole for the ultrasonic knife to pass through; one side of the rotating cap facing the tightening turntable is provided with a plurality of torsion pins which extend out of the surface through spring support, and the torsion pins can compress the springs to retract into the surface under the action of stress.

As another aspect of the present invention, there is also provided an ultrasonic blade assembly employing the ultrasonic blade-transducer coupling mechanism as described above.

Based on the scheme, compared with the prior art, the connecting mechanism has at least one of the following beneficial effects:

(1) the screwing device and the ultrasonic knife are integrated, so that the operation steps of installation and removal are omitted, and the operation is simpler and more convenient;

(2) the tightening device and the ultrasonic knife are integrated, so that the risk of loss is avoided, special storage is not needed, and the use is more convenient;

(3) the screwing device and the ultrasonic knife are integrated, so that the risk caused by omission in the process of disinfection is avoided;

(4) the torsion value is adjusted by using the compression spring, so that the torsion value is stable and reliable, and the service life is longer;

(5) the tightening device is used as a rotating mechanism at the same time, and an independent torque wrench does not need to be matched, so that the product cost is reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of an ultrasonic blade of a coupling mechanism according to an embodiment of the present invention;

FIG. 2 is a semi-exploded view of a coupling mechanism according to an embodiment of the present invention;

fig. 3 is a side semi-exploded view of a coupling mechanism according to an embodiment of the present invention.

In the above figures, the reference numerals have the following meanings:

01. ultrasonic knife handle portion

02. Tightening device

03. Cutter head assembly

04. Tightening rotary disc

05. Torsion pin

06. Compression spring

07. Rotating body

08. Decorative cover board

Detailed Description

In order that the objects, technical solutions and advantages of the present invention will become more apparent, the present invention will be further described in detail with reference to the accompanying drawings in conjunction with the following specific embodiments.

The invention discloses a connecting mechanism of an ultrasonic knife and a transducer, which comprises:

the rotating disc is screwed up and is of a rotating body structure taking the insertion direction of the ultrasonic knife as an axis, a through hole is formed in the axis and is sleeved with the ultrasonic knife, and the ultrasonic knife can synchronously rotate through a pin or a clamping structure; one end of the tightening turntable is provided with a thread or a clamping structure for connecting with the handle part of the ultrasonic knife containing the transducer, and the other end of the tightening turntable is a limiting plane which is provided with a plurality of grooves for matching with a torque pin arranged on the rotating cap;

the rotating cap is a rotating body structure taking the insertion direction of the ultrasonic knife as an axis, and the axis forms a through hole for the ultrasonic knife to pass through; one side of the rotating cap facing the screwing turntable is provided with a plurality of torsion pins which extend out of the surface through spring support, and the torsion pins can compress the springs to retract into the surface under the action of stress.

Wherein, the side of the tightening turntable and/or the rotating cap forms a plurality of convex edges, which is convenient for the hand to hold and exert force.

The tightening turntable and/or the rotating cap are made of engineering plastics or metals, such as Polyethylene (PE), polypropylene (PP), Acrylonitrile Butadiene Styrene (ABS), polyethylene terephthalate (PET), aluminum alloy and the like.

The torsion pin supported by the spring and extending out of the surface can be a hemispherical or spherical ball arranged on a cube connected by a straight spring, and can also be an existing spring clamping ball directly. The number of torsion pins may be 1, 2, 3, 4, 5, 6, 7, … …, and is typically preferably 2 or 3. The control of a plurality of different angles is realized by arranging a plurality of torsion pins and the matching of the grooves, for example, the torsion pins slide into different grooves to be clamped.

Preferably, the edge of the head part of the torsion pin in the clockwise direction of the external circumferential tangent line can be designed into smooth transition, such as circular arc transition, while the edge in the anticlockwise direction forms a step, such as a vertical wall, and the groove is also arranged, so that when the screwing turntable and/or the rotating cap is rotated clockwise, the pin shaft of the screwing turntable drives the ultrasonic knife to rotate, the ultrasonic knife is connected with the transducer (the handle part of the ultrasonic knife) in a threaded manner, after the threads are screwed in completely, the force is reused, the tangential force and the positive pressure on the torsion pin are increased, the spring is compressed, the torsion value is increased along with the increase of the compression amount of the spring, after the certain compression amount is reached, the top part of the torsion pin is separated from the groove on the screwing turntable, the limiting effect disappears, and the torsion overload protection effect is achieved; when dismantling the transducer, anticlockwise rotation swivel cap, the carousel of screwing up rotates together under the planar drive in torsion pin top for the screw thread loosens.

In addition, the rotating cap can be sleeved with a decorative cover plate to enhance the attractiveness of the connecting mechanism and play a role in water resistance and dust isolation.

The invention also discloses an ultrasonic knife assembly adopting the connecting mechanism, which comprises a transducer, an ultrasonic knife and the like.

The technical solution of the present invention is further illustrated by the following specific embodiments in combination with the accompanying drawings. It should be noted that the following examples are only for illustrative purposes and are not intended to limit the present invention.

Fig. 1 is a schematic view of the overall structure of an ultrasonic blade of a connecting mechanism according to an embodiment of the present invention. As shown in fig. 1, 01 is the handle part (with the transducer inside) of the ultrasonic knife, 02 is the tightening device which comprises the tightening turntable and the rotating cap mentioned above, and 03 is the knife head assembly which mainly comprises the ultrasonic knife. The tightening device 02 is fixed on the base 01 through a bayonet and fixed with the base 03 through a pin shaft, and the base 03 can be driven to rotate while the tightening device 02 is pulled to rotate.

Fig. 2 is a semi-exploded view of a coupling mechanism according to an embodiment of the present invention. As shown in fig. 2, the tightening turntable 04 is an approximate hexagon with six round corners, and 6 semicircular grooves are arranged on one surface of the tightening turntable facing the rotating cap; 05 is a torsion pin, the head part of the torsion pin is semicircular and is matched with a groove on the tightening turntable 04 for use; 06 is a compression spring; 07 is a rotating cap which can rotate independently, and a torsion pin 05 and a compression spring 06 are assembled at corresponding positions in the rotating cap 07; 08 is a decorative cover plate which plays the roles of decorating and supporting the cutter bar.

Fig. 3 is a side semi-exploded view of a coupling mechanism according to an embodiment of the present invention. As shown in fig. 3, 05 is a torsion pin, the head is semicircular and is used in cooperation with a groove on the tightening

turntable

04, 06 is a compression spring, 07 is a rotating cap, and the torsion pin 05 and the compression spring 06 are assembled at corresponding positions in the rotating cap 07.

The working principle of the connecting mechanism between the ultrasonic knife and the transducer is as follows:

1. when the ultrasonic knife and the transducer are assembled, the rotating cap 07 is rotated clockwise, the torque pin 05 plays a role in limiting under the action of tangential force to drive the tightening turntable 04 to rotate simultaneously, the tightening turntable 04 drives the cutter head assembly 03 to rotate through the pin shaft, so that the ultrasonic knife is in threaded connection with the transducer, when the threads are completely screwed in, the force is reused, the torque pin 05 is subjected to the tangential force and the positive pressure which are increased, the torque pin 05 downwards compresses the compression spring 06, the torque value is increased along with the increase of the compression amount of the compression spring 06, and after a certain compression amount is reached, the top of the torque pin 05 is separated from a groove on the tightening turntable 04, the limiting function disappears, and the torque overload protection function is played; when the transducer is disassembled, the rotating cap 07 is rotated anticlockwise, and the tightening rotary disc 04 is driven to rotate together by the top plane of the torsion pin 05, so that the threads are loosened.

2. During use of the ultrasonic scalpel, a doctor can adjust the angle of the scalpel head by rotating the tightening turntable 04 or the rotating cap 07.

Furthermore, the above definitions of the various elements and methods are not limited to the particular structures, shapes or arrangements of parts mentioned in the examples, which may be easily modified or substituted by one of ordinary skill in the art, for example: the decorative cover plate can be omitted; the number of the pins and the compression springs can be flexibly set according to design requirements; the tightening device may be replaced by other structural means.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A connection mechanism for an ultrasonic blade and a transducer, comprising:

2. The ultrasonic blade to transducer connection of claim 1, wherein the tightening dial and/or the rotating cap have ridges formed on their sides to facilitate gripping and application of force.

3. The ultrasonic blade and transducer connection mechanism of claim 1, wherein the tightening turntable and/or the rotating cap is made of engineering plastic or metal; the engineering plastic is Polyethylene (PE), polypropylene (PP), Acrylonitrile Butadiene Styrene (ABS) or poly ethylene Propylene (POM), and the metal is aluminum alloy.

4. The ultrasonic blade and transducer connection mechanism of claim 1, wherein the torsion pin supported by the spring and protruding from the surface is a hemispherical or spherical ball arranged on a cube connected by a straight spring, or a spring clip directly.

5. The ultrasonic blade to transducer connection of claim 1, wherein the number of torsion pins is 1, 2, 3, 4, 5, 6, or 7.

6. The ultrasonic blade and transducer connection mechanism of claim 1, wherein the head of the torsion pin is provided with a smooth transition along the clockwise direction of the tangent line of the outer circumference, while the counterclockwise direction of the edge is stepped, and the groove on the tightening turntable is also provided, so that when the tightening turntable and/or the rotation cap is rotated along the clock, the pin of the tightening turntable drives the ultrasonic blade to rotate, so that the ultrasonic blade and the handle of the ultrasonic blade are connected by the thread; when dismantling the transducer, anticlockwise rotation swivel cap, the carousel of screwing up rotates together under the planar drive in torsion pin top for the screw thread loosens.

7. The ultrasonic blade and transducer connection mechanism of claim 1, wherein the rotary cap is further sleeved with a decorative cover plate to enhance the aesthetic appearance of the connection mechanism and to provide waterproof and dust-proof functions.

8. An ultrasonic blade assembly employing the ultrasonic blade-to-transducer coupling mechanism of any one of claims 1 to 7.