CN111446678A - A kind of ultrasonic transducer threading sealing structure - Google Patents

Abstract

The invention relates to the field of ultrasonic surgical instruments, in particular to an ultrasonic transducer threading and sealing structure. The manual wire starts from the connection with the inner conductive ring and passes through the front flexible seal, the middle rigid support and the rear flexible seal in sequence. The seals and the through grooves on the transducer shell, where the manual wire passes through the above components are all surrounded by the surface of the flexible element, so as to avoid the friction between the manual wire and the above components, which may cause damage to the outer layer such as skin breakage and shedding, not to mention The connection between the manual wire and the inner conductive ring and the place where the manual wire passes through the transducer casing are covered and sealed by flexible components, so that no water ingress will cause the hand to be damaged. The control wire is short-circuited with the transducer shell, which improves the safety factor, ensures the normal transmission of the manual control signal, and activates the ultrasonic knife smoothly.

Description

A kind of ultrasonic transducer threading sealing structure

technical field

The invention relates to the field of ultrasonic surgical instruments, in particular to an ultrasonic transducer threading and sealing structure.

Background technique

Now, the ultrasonic knife has been widely used in clinical surgical treatment. The ultrasonic knife is generally composed of an ultrasonic knife generator, a transducer and a cable, a scalpel head with a manual switch, etc. The manual switch on the scalpel head is activated to make the ultrasonic knife At this time, the host outputs a high-frequency resonant electrical signal to the transducer, and then the transducer converts the high-frequency vibration signal into high-frequency mechanical vibration and sends it to the scalpel head, which amplifies the high-frequency mechanical action on the tissue. , to vaporize water in tissue cells, break protein hydrogen bonds, disintegrate cells, cut tissue or coagulate, so as to achieve the purpose of tissue cutting and hemostasis.

The transducer shell of some ultrasonic scalpels on the market is provided with a manual control wire for transmitting manual control signals. One end of the manual control wire is electrically connected to a conductive metal ring placed at one end of the transducer shell. In the transducer shell, the other end of the manual wire is electrically connected to one end of the cable, the manual wire is connected to the host through the cable, one end of the cable is connected to the transducer, and the other end is connected to the ultrasonic knife generator.

The manual control wire in the transducer shell of the existing ultrasonic knife transmits the manual control signal from the conductive metal ring at one end of the transducer shell to the ultrasonic knife generator, and the manual control wire is connected between the conductive metal ring and the cable. It is necessary to pass through a plastic inner hole, a rubber inner hole, and the inner hole on the transducer shell in turn, and then connect to the cable through the inner cavity of the transducer shell. First, during the assembly of the shell, the rubber piece will Deformation, limited reprocessing space, and the above three inner holes cannot be large enough, so that the hard parts and manual wires will be damaged, such as skin breakage, fall off, or even breakage at the contact place with the plastic parts and the transducer shell. Open, which will lead to short circuit or open circuit between the manual wire and the transducer casing. Secondly, the conductive metal ring and the plastic part cannot be well sealed, and water will enter the casing, which will also lead to a short circuit between the manual wire and the transducer casing. The results of the above two points It will cause the failure of manual signal transmission, and also cause the ultrasonic knife to be unable to be activated and used during the operation.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, and to provide an ultrasonic transducer threading and sealing structure that avoids the failure of manual signal transmission and can activate the ultrasonic knife smoothly.

The present invention is achieved through the following technical solutions:

An ultrasonic transducer threading sealing structure is characterized by comprising: a transducer casing, a conductive ring assembly arranged in the transducer casing, a threading sealing assembly and a manual wire, the manual wire passing through the threading seal components and transducer housings,

The conductive ring assembly includes an outer conductive ring that is electrically connected to the transducer shell to transmit one of positive and negative manual signals, an inner conductive ring that is electrically connected to the manual wire to transmit the other of positive and negative manual signals, and The insulator between the outer conductive ring and the inner conductive ring,

The threading sealing assembly is sealed and connected between the inner conductive ring and the transducer shell, and includes a front flexible seal, a middle rigid support and a rear flexible seal, and the front flexible seal is closely attached to the inner conductive ring. In combination, the middle rigid support body is tightly arranged between the front flexible seal and the rear flexible seal.

Preferably, the transducer housing is provided with a first through slot for the manual wire to pass through.

Preferably, the front flexible seal is provided with a second through groove for the manual wire to pass through, and the front flexible seal covers the connection between the manual wire and the inner conductive ring, so that the front flexible seal and the manual wire can pass through. The wire and the inner conductive ring are sealed and connected.

Preferably, the rear flexible seal is provided with a third through groove for the manual wire to pass through, and the rear flexible seal is tightly fitted with the transducer housing so that the rear flexible seal, the manual wire and the changer The energy device housing is sealed.

Preferably, the middle rigid support body is provided with a fourth through groove, the front flexible sealing member and the rear flexible sealing member are respectively provided with protruding parts inserted into the fourth through groove, the second through groove is The grooves and the third through grooves respectively extend into the corresponding protrusions.

The beneficial effects of the present invention are:

The manual control wire starts from the connection with the inner conductive ring, and passes through the front flexible seal, the middle rigid support, the rear flexible seal and the through groove on the transducer shell in sequence, and the manual control wire passes through the above components. Surrounded by the surface of the flexible element, to avoid the friction between the manual wire and the above components, which will cause damage to the outer layer, such as peeling and falling off, and will not disconnect the manual wire and the transducer housing. The connection of the conductive ring and the place where the manual control wire passes through the transducer shell are covered and sealed by the flexible element, and there will be no short circuit between the manual control wire and the transducer shell due to water ingress, which improves the safety factor and ensures the normal transmission of the manual control signal. Smoothly activate the ultrasonic scalpel.

Description of drawings

FIG. 1 is a schematic cross-sectional structure diagram of the present invention.

FIG. 2 is a partial enlarged view of an embodiment of the present invention.

FIG. 3 is a partial enlarged view of another embodiment of the present invention.

FIG. 4 is a schematic structural diagram of the conductive ring assembly.

In the figure: 1. Transducer housing, 11. First segmented housing, 12. Second segmented housing, 2. Conductive ring assembly, 21. Outer conductive ring, 22. Insulator, 23. Inner conductive ring, 231. Inner conductive ring, 232. Welding ring, 3. Threading seal assembly, 31. Front flexible seal, 32. Middle rigid support, 33. Rear flexible seal, 4. Manual wire, 5. Transducer clamp assembly, 51. flexible support, 52. flexible sealing support.

Detailed ways

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and the best embodiments.

As shown in the figure, the present invention includes a transducer casing 1, a conductive ring assembly 2, a threading sealing assembly 3, a manual wire 4 and a transducer clamping assembly 5, and the transducer casing 1 at least includes a first segmented casing 11 And the second segmented housing 12 , the conductive ring assembly 2 includes an outer conductive ring 21 , an insulator 22 and an inner conductive ring 23 . The outer conductive ring 21 and the inner conductive ring 23 transmit manual control signals, and the insulator 22 isolates and insulates the outer conductive ring 21 and the inner conductive ring 23 . The threading seal assembly 3 includes a front flexible seal 31, a rigid support body 32 and a rear flexible seal 33. The front flexible seal 31 and the rear flexible seal 33 are respectively in close contact with part of the surface of the rigid support 32 to ensure sealing condition. The manual wire 4 is electrically connected to the inner conductive ring 23 , then passes through the front flexible seal 31 , the rigid support 32 and the rear flexible seal 33 in sequence, and finally passes through the first segmented housing 11 . The transducer clamping assembly 5 includes a flexible support 51 , a flexible sealing support 52 and a transducer core stack passing through the flexible support 51 and the flexible sealing support 52 . The manual wire 4 passes through the first segmented housing 11 and then passes through the flexible support 51 and the second segmented housing 12, and extends from the interior of the transducer housing 1 to the transducer via the cavity in the second segmented housing 12. The periphery of the energy device housing 1.

In the present invention, the electrical connection between the inner conductive ring 23 and the manual control wire 4 ensures that the manual control signal is transmitted from the conductive ring assembly 2 through the inside of the transducer housing 1 to the periphery of the transducer housing 1 all the way.

The above-mentioned inner conductive ring assembly 23 may be integrally formed, or may be a detachable structure. In this embodiment, the inner conductive ring assembly 23 includes an inner conductive ring sheet 231 and a welding ring sheet 232. As shown in FIG. 4 , the inner conductive ring sheet 231 and the welding ring piece 232 are closely attached to ensure that the inner conductive ring piece 231 and the welding ring piece 232 are electrically connected, the welding ring piece 232 is provided with a groove, and the manual control wire 4 is blocked at the above-mentioned groove on the welding ring piece 232 Soldering achieves electrical connection with the inner conductive ring 23 . The electrical connection between the manual wire 4 and the welding ring piece 232 can also be realized by riveting, bonding or the like.

In the present invention, through grooves are provided on the threading sealing assembly 3 , the first segmented housing 11 , the flexible support body 51 and the second segmented housing 12 to ensure the passage of the manual wire 4 , as shown in FIG. 2 . , the front flexible seal 31 is provided with a through groove in the T-shaped part, the middle rigid support body 32 is also provided with a through groove, and the T-shaped part on the front flexible seal 31 extends into the through groove on the middle rigid support body 32 Inside, the front flexible seal 31 extends into the through slot on the intermediate rigid support body 32 at the same time as the through slot of the T-shaped portion. The rear flexible seal 33 is provided with a through groove in the T-shaped part, and the T-shaped part also extends into the through groove on the intermediate rigid support body 32, and the rear flexible seal 33 extends to the intermediate rigidity in the through groove of the T-shaped part in the through groove on the support body 32 . The first segmented housing 11 is provided with a through groove corresponding to the through groove of the above-mentioned rear flexible seal 33 in the T-shaped portion.

The specific state of the manual wire 4 passing through the threading seal assembly 3 , the first segmented housing 11 , the flexible support body 51 and the second segmented housing 12 is as follows: when the conductive ring assembly 2 is not pressed, the flexible seal 31 is placed in front. The end face of the upper through groove and the end face of the upper through groove of the rear flexible seal 33 are separated by a distance a in the through groove on the intermediate rigid support body 32. When the conductive ring assembly 2 is pressed into the first part of the transducer shell 1 by external force, When the surface of the outer conductive ring 21 is in close contact with the surface of the first segmented housing 11 in a segmented housing 11: the inner conductive ring 23 compresses the upper surface of the front flexible seal 31 toward the middle rigid support body, so that the The T-shaped portion on the front flexible seal 31 goes deeper into the through groove 32A on the middle rigid support body 32 , and because the first segmented housing 11 supports the rear flexible seal 33 toward the middle rigid support body 32 , The T-shaped portion on the rear flexible seal 33 is further penetrated into the through groove on the intermediate rigid support 32 . As a result, the upper end face of the front flexible seal 31 and the upper end face of the rear flexible seal 33 are on the intermediate rigid support 32 The separation distance a in the through groove becomes smaller to the separation distance b, and it is easy to adjust the size or structure of the front flexible seal 31, the middle rigid support 32 and the rear flexible seal 33 so that the above separation distance b is small enough to ensure that at this time When the manual wire 4 passes through the front flexible seal 31 , the middle rigid support 32 and the rear flexible seal 33 , the manual wire 4 does not contact the inner wall of the through groove on the middle rigid support 32 .

When the above-mentioned conductive ring assembly 2 is pressed into the first segmented casing 11 in the transducer casing 1 by an external force, the rear flexible sealing member 33 is provided with a larger than the above-mentioned through-groove near the through-groove of the T-shaped part. grooves to form stepped grooves with the above-mentioned through grooves. The above-mentioned through groove intersects with the rear flexible sealing member 33 and there is a curve, and the above-mentioned curve extends into the through groove on the first segmented housing 11 because the rear flexible sealing member 33 is compressed. As a result, when the manual control wire 4 passes through the through groove on the first segmented housing 11 , it can be ensured that the manual control wire 4 is not squeezed by the through groove on the first segmented housing 11 .

The specific state when the above-mentioned uncompressed conductive ring assembly 2 or the conductive ring assembly 2 is pressed into the first segmented casing 11 in the transducer casing 1 can ensure that the manual wire 4 passes through the threading sealing assembly 3, the first segmented casing 11, and the like. The first segmented housing 11 , the flexible support body 51 and the second segmented housing 12 are all surrounded by the surface of the flexible element, and the manual wire will not be damaged, such as skin breakage, peeling, etc., and will not be disconnected in these enclosed places. This results in a short or open circuit between the manual wire and the transducer housing.

In the present invention, the front flexible sealing member 31 and the rear flexible sealing member 33 are compressed and deformed to ensure that the pressed surface is sealed during the pressing and assembling process of the conductive ring assembly 2 into the transducer housing 1. In the axial direction , when the conductive ring assembly 2 is pressed into the first segmented housing 11 in the transducer housing 1, the front flexible seal 31 and the rear flexible seal 33 are compressed, while the conductive ring assembly 23 and the front The flexible seal 31 is in close contact, and the groove of the welding manual wire 4 is covered and sealed in the axial direction; the front flexible seal 31 is in close contact with the intermediate rigid support 32, and the through groove on the front flexible seal 31 is axially sealed. Cover and seal; the rear flexible seal 33 is in close contact with the middle rigid support body 32 , and the through groove on the rear flexible seal 33 is covered and sealed in the axial direction; the rear flexible seal 33 is in close contact with the first segmented housing 11 , the stepped groove on the rear flexible seal 33 is covered and sealed in the axial direction. In this way, when the manual wire 4 passes through the threading sealing assembly 3 and the first segmented housing 11, the cavities on the path are covered and sealed in the axial direction.

The above-mentioned front flexible seal 31 and rear flexible seal 33 are compressed and deformed to ensure that the pressed surface is sealed. In the radial direction, when the conductive ring assembly 2 is pressed into the transducer housing 1, the When inside the first segmented housing 11 , the rear flexible seal 33 is compressed, and at the same time, the peripheral surface of the rear flexible seal 33 is in close contact with the inner surface of the first segmented housing 11 . The through grooves are radially covered and sealed. In this way, when the manual wire 4 passes through the threading sealing assembly 3 and the first segmented housing 11, the cavities on the path are covered and sealed in the radial direction.

To sum up, the manual control wire 4 is surrounded by the surface of the soft element on the passing path, and the manual control wire will not be damaged such as skin breakage and fall off in these enclosed places, and will not be disconnected, which will cause the hand The control wire and the transducer shell are short-circuited or open-circuited; the cavity on the path through which the manual control wire 4 passes is covered and sealed in both the axial and radial directions, and there will be no water ingress in the casing to cause the manual control wire and the transducer shell to be short-circuited. . The manual control signal will not fail to transmit, nor will it cause the ultrasonic knife to be unable to be activated and used during the operation.

Further, in a preferred example, the inner conductive ring assembly 23 may include an inner conductive ring sheet with an outer edge end extending outward, and an outer edge surface on the outer edge end, and the outer edge surface is closely attached to the welding ring sheet to ensure that The inner conductive ring sheet 231 is electrically connected to the welding ring sheet 232, the inner conductive ring sheet 231 has a cavity for avoiding the welding point on the welding ring sheet, the welding ring sheet 232 is provided with a groove, and the manual wire 4 and the welding ring sheet 232 are in the recess. The grooves are sealed and welded to achieve electrical connection with the inner conductive ring sheet 231 . The electrical connection between the manual wire 4 and the welding ring piece 232 can also be realized by riveting, bonding or the like. The above-mentioned outer edge end may also extend axially outward, axially inward, or radially inward; the shape of the outer edge end may also be a strip shape, or a fan blade shape or the like.

Further, the inner conductive ring assembly 23 may be of a separate type, including at least two conductive members, in this embodiment, the inner conductive ring sheet 231 and the welding ring sheet 232; the inner conductive ring assembly 23 may also be of a whole conductive member type , in this embodiment, the conductive ring assembly 2 includes an outer conductive ring 21, an insulator 22 and an inner conductive ring 23. Preferably, the inner conductive ring 23 includes an outer edge end with an outer edge surface, a groove and a cavity on the outer edge end. , the manual wire 4 and the inner conductive ring are sealed and welded at the groove to realize the electrical connection with the inner conductive ring. The electrical connection between the manual wire 4 and the inner conductive ring can also be realized by riveting, bonding or the like. The above-mentioned outer edge end may also extend axially outward, axially inward, or radially inward; the shape of the outer edge end may also be a strip shape, or a fan blade shape or the like.

Furthermore, the threading seal assembly 3 can be combined in different structures, specifically:

In this embodiment, the rear flexible sealing member 33 is provided with a through groove in the T-shaped portion, the front flexible sealing member is provided with a through groove, and the T-shaped portion of the rear flexible sealing member 33 extends into the through groove on the intermediate rigid support body inside, and extend all the way to the through groove of the front flexible seal. The through groove of the T-shaped part of the rear flexible seal 33 also extends into the through groove of the front flexible seal;

In this embodiment, the front seal is provided with a through groove in the T-shaped part, and the rear seal is provided with a through groove. The front flexible seal is provided with a larger through groove near the through groove, so as to match with the through groove on the rear flexible seal. The T-shaped portion on the front flexible seal extends into the through groove on the intermediate rigid support body, and extends all the way to the through groove on the rear flexible seal. The through groove of the front flexible seal also passes through the through groove on the middle rigid support body, and the larger through groove on the T-shaped on the front flexible seal extends to the larger through groove on the T-shaped on the rear flexible seal. in the groove;

In this embodiment, the threading sealing assembly includes an intermediate flexible support body, and preferably, an outer edge portion is provided on the intermediate flexible support body. The middle flexible support body is embedded in the through groove on the middle rigid support body. Preferably, a cavity is provided in the through groove on the above-mentioned intermediate rigid support body. The intermediate rigid support body is provided with a through slot in the T-shaped portion. A through groove is provided on the front flexible seal. The rear flexible seal is provided with a through groove. Preferably, the T-shaped portion of the intermediate flexible support body is provided with a larger through groove than the through groove at a position close to the through groove, so as to match with the through groove on the rear flexible seal. The T-shaped part of the middle flexible support body extends into the upper through groove of the front flexible seal, and the T-shaped part of the middle flexible support body extends into the upper through groove of the rear flexible seal. One end of the groove extends into the through groove on the front flexible seal, and the other end extends into the through groove on the rear flexible seal;

In this embodiment, the threading seal assembly includes a flexible seal and a rigid support. There are protruding parts on the flexible sealing element, and through grooves are provided in the protruding parts. The rigid support body is provided with a through groove, and preferably, a cavity is provided in the through groove of the rigid support body. The protruding portion on the flexible seal is built into the through groove of the rigid support body, and correspondingly, the through groove on the flexible seal is also built into the through groove of the rigid support body. Preferably, there are two T-shaped parts on the protruding part of the flexible seal, and the two T-shaped parts respectively extend outward at both ends of the protruding part to the outside of the through groove on the rigid support body, and cover the through groove.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (5)

1. an ultrasonic transducer threading seal structure, is characterized in that, comprises: transducer casing, the conductive ring assembly that is arranged in the transducer casing, threading sealing assembly and manual control wire, described manual control wire passes through Thread seal assembly and transducer housing, The conductive ring assembly includes an outer conductive ring that is electrically connected to the transducer shell to transmit one of positive and negative manual signals, an inner conductive ring that is electrically connected to the manual wire to transmit the other of positive and negative manual signals, and The insulator between the outer conductive ring and the inner conductive ring, The threading sealing assembly is sealed and connected between the inner conductive ring and the transducer shell, and includes a front flexible seal, a middle rigid support and a rear flexible seal, and the front flexible seal is closely attached to the inner conductive ring. In combination, the middle rigid support body is tightly arranged between the front flexible seal and the rear flexible seal. 2 . The ultrasonic transducer threading sealing structure according to claim 1 , wherein the transducer casing is provided with a first through groove for the manual wire to pass through. 3 . 3 . The ultrasonic transducer threading sealing structure according to claim 1 , wherein the front flexible sealing member is provided with a second through groove for the manual wire to pass through, and the front flexible sealing member is Covering the connection between the manual wire and the inner conductive ring enables the front flexible seal, the manual wire and the inner conductive ring to be sealed and connected. 4 . The ultrasonic transducer threading sealing structure according to claim 3 , wherein the rear flexible sealing member is provided with a third through groove for the manual wire to pass through, and the rear flexible sealing member is provided with a third through groove. 5 . It is closely fitted with the transducer casing to seal the connection between the rear flexible seal, the manual wire and the transducer casing. 5 . The ultrasonic transducer threading sealing structure according to claim 4 , wherein the middle rigid support body is provided with a fourth through groove, the front flexible seal and the rear flexible seal. 6 . A protruding part inserted into the fourth through groove is respectively provided on the upper part, and the second through groove and the third through groove respectively extend into the corresponding protruding part.

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