Ultrasonic transducer threading sealing structure

Abstract

The present invention relates to the field of ultrasonic surgical instruments, and in particular to an ultrasonic transducer threading sealing structure. A hand-controlled wire starts from a connection with an inner conductive ring and passes through a front flexible seal, an intermediate rigid support body, a rear flexible seal and a through groove on a transducer housing in sequence. The hand-controlled wire is surrounded by the surface of a flexible component when passing through the above components, so as to avoid friction between the hand-controlled wire and the above components causing damage such as skin breakage and shedding of the outer layer, and will not be disconnected to cause a short circuit or open circuit between the hand-controlled wire and the transducer housing. The connection between the hand-controlled wire and the inner conductive ring and the hand-controlled wire passing through the transducer housing are covered and sealed by the flexible component, so that water will not enter to cause a short circuit between the hand-controlled wire and the transducer housing, thereby improving the safety factor, ensuring normal transmission of hand-controlled signals, and smoothly activating an ultrasonic knife.

Description

Technical Field

[0001] The invention relates to the field of ultrasonic surgical instruments, and in particular to an ultrasonic transducer threading sealing structure. Background Art

[0002] Nowadays, ultrasonic scalpels have been widely used in clinical surgical treatment. Ultrasonic scalpels are generally composed of an ultrasonic scalpel generator, a transducer and cables, a surgical blade head with a manual switch, etc. The manual switch on the surgical blade head is activated to make the ultrasonic scalpel work. 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 a high-frequency mechanical vibration and transmits it to the surgical blade head. The surgical blade head amplifies this high-frequency mechanical vibration on the tissue, vaporizing the water in the tissue cells, breaking the protein hydrogen bonds, disintegrating the cells, and causing the tissue to be cut or coagulated, thereby achieving the purpose of tissue cutting and hemostasis.

[0003] Some ultrasonic scalpels on the market have a manual control wire for transmitting manual control signals inside the transducer housing. One end of the manual control wire is electrically connected to a conductive metal ring placed at one end of the transducer housing. The manual control wire passes through the transducer housing from the inside, and the other end of the manual control wire is electrically connected to one end of the cable. The manual control wire is connected to the host via the cable, one end of the cable is connected to the transducer, and the other end is connected to the ultrasonic scalpel generator.

[0004] The manual control wire in the transducer housing of the existing ultrasonic scalpel transmits the manual control signal from the conductive metal ring at one end of the transducer housing to the ultrasonic scalpel generator. The manual control wire must pass through an inner hole of a plastic part, a rubber inner hole, and an inner hole on the transducer housing in sequence between connecting the conductive metal ring and the cable, and then be connected to the cable through the cavity in the transducer housing. Firstly, due to the deformation of the rubber part during the assembly of the housing, and the limitation of the processing space, the above three inner holes cannot be large enough, so that the outer layer of the manual control wire will be damaged such as cracking and falling off at the contact point between the hard parts and the plastic part and the transducer housing, or even disconnected, resulting in a short circuit or open circuit between the manual control wire and the transducer housing. Secondly, the conductive metal ring and the plastic part cannot be well sealed, water will enter the housing, and also cause a short circuit between the manual control wire and the transducer housing. The above two results will cause the failure of manual control signal transmission, and also cause the ultrasonic scalpel to be unable to be activated and used during surgery. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide an ultrasonic transducer threading sealing structure that avoids failure of manual signal transmission and can smoothly activate an ultrasonic knife.

[0006] The present invention is achieved through the following technical solutions:

[0007] An ultrasonic transducer threading sealing structure, characterized in that it comprises: a transducer housing, a conductive ring assembly arranged in the transducer housing, a threading sealing assembly and a manual wire, wherein the manual wire passes through the threading sealing assembly and the transducer housing.

[0008] The conductive ring assembly includes an outer conductive ring electrically connected to the transducer housing to transmit one of the positive and negative hand control signals, an inner conductive ring electrically connected to the hand control wire to transmit the other of the positive and negative hand control signals, and an insulator disposed between the outer conductive ring and the inner conductive ring.

[0009] The threading seal assembly is sealed and connected between the inner conductive ring and the transducer housing, and includes a front flexible seal, an intermediate rigid support body and a rear flexible seal. The front flexible seal is tightly fitted with the inner conductive ring, and the intermediate rigid support body is tightly arranged between the front flexible seal and the rear flexible seal.

[0010] Preferably, the transducer housing is provided with a first through slot for the manual control wire to pass through.

[0011] Preferably, the front flexible seal is provided with a second through slot for the manual control wire to pass through, and the front flexible seal covers the connection between the manual control wire and the inner conductive ring so that the front flexible seal, the manual control wire and the inner conductive ring are sealed and connected.

[0012] Preferably, the rear flexible seal is provided with a third through slot for the manual control wire to pass through, and the rear flexible seal is tightly fitted with the transducer housing so that the rear flexible seal, the manual control wire and the transducer housing are sealed and connected.

[0013] Preferably, a fourth through groove is provided on the intermediate rigid support body, and protrusions inserted into the fourth through groove are respectively provided on the front flexible seal and the rear flexible seal, and the second through groove and the third through groove extend into corresponding protrusions respectively.

[0014] The beneficial effects of the present invention are:

[0015] The manual control wire starts from the connection with the inner conductive ring, and passes through the front flexible seal, the middle rigid support body, the rear flexible seal and the through groove on the transducer housing in sequence. The manual control wire is surrounded by the surface of the flexible component where it passes through the above components, so as to avoid friction between the manual control wire and the above components causing damage to the outer layer such as skin breakage and shedding, and will not be disconnected to cause a short circuit or open circuit between the manual control wire and the transducer housing. The connection between the manual control wire and the inner conductive ring and the manual control wire passing through the transducer housing are covered and sealed by the flexible component, so water will not enter to cause a short circuit between the manual control wire and the transducer housing, thereby improving the safety factor, ensuring the normal transmission of the manual control signal, and smoothly activating the ultrasonic knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a cross-sectional structural schematic diagram of the present invention.

[0017] Figure 2 It is a partial enlarged view of an embodiment of the present invention.

[0018] Figure 3 It is a partial enlarged view of another embodiment of the present invention.

[0019] Figure 4 It is a structural schematic diagram of a conductive ring assembly.

[0020] In the figure: 1. transducer housing, 11. first segment housing, 12. second segment housing, 2. conductive ring assembly, 21. outer conductive ring, 22. insulator, 23. inner conductive ring, 231. inner conductive ring sheet, 232. welding ring sheet, 3. threading seal assembly, 31. front flexible seal, 32. middle rigid support, 33. rear flexible seal, 4. manual control wire, 5. transducer clamping assembly, 51. flexible support, 52. flexible sealing support. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and the best embodiments.

[0022] As shown in the figure, the present invention includes a transducer housing 1, a conductive ring assembly 2, a threading seal assembly 3, a manual wire 4 and a transducer clamping assembly 5. The transducer housing 1 includes at least a first segment housing 11 and a second segment 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 the manual control signal, 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 a part of the surface of the rigid support body 32 to ensure the sealing condition. The manual wire 4 is electrically connected to the inner conductive ring 23, and then passes through the front flexible seal 31, the rigid support body 32 and the rear flexible seal 33 in sequence, and finally passes through the first segment housing 11. The transducer clamping assembly 5 includes a flexible support member 51, a flexible sealing support member 52, and a transducer core stack passing through the flexible support member 51 and the flexible sealing support member 52. The manual control wire 4 passes through the first segmented housing 11 and then passes through the flexible support member 51 and the second segmented housing 12, and extends from the inside of the transducer housing 1 to the periphery of the transducer housing 1 through the cavity in the second segmented housing 12.

[0023] The present invention 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 through the electrical connection between the inner conductive ring 23 and the manual control wire 4 .

[0024] The inner conductive ring assembly 23 may be integrally formed or may be a detachable structure. The inner conductive ring assembly 23 in this embodiment includes an inner conductive ring sheet 231 and a welding ring sheet 232. Figure 4 As shown, the inner conductive ring piece 231 and the welding ring piece 232 are tightly attached to ensure that the inner conductive ring piece 231 and the welding ring piece 232 are electrically conductive. A groove is formed on the welding ring piece 232, and the manual wire 4 is sealed and welded at the groove to achieve 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 achieved by riveting, bonding, etc.

[0025] The present invention ensures the passage of the hand-controlled wire 4 by providing a through groove on the threading sealing assembly 3, the first segment housing 11, the flexible support body 51 and the second segment housing 12. Figure 2 As shown, the front flexible seal 31 is provided with a through groove in the T-shaped portion, and the middle rigid support body 32 is also provided with a through groove. The T-shaped portion on the front flexible seal 31 extends into the through groove on the middle rigid support body 32, and the through groove of the front flexible seal 31 in the T-shaped portion also extends into the through groove on the middle rigid support body 32. The rear flexible seal 33 is provided with a through groove in the T-shaped portion, and the T-shaped portion also extends into the through groove on the middle rigid support body 32, and the through groove of the rear flexible seal 33 in the T-shaped portion also extends into the through groove on the middle rigid support body 32. The first segmented housing 11 is provided with a through groove at a position corresponding to the through groove of the rear flexible seal 33 in the T-shaped portion.

[0026] The specific state of the manual wire 4 passing through the above-mentioned threading seal component 3, the first segmented shell 11, the flexible support body 51 and the second segmented shell 12 is: when the conductive ring component 2 is not compressed, the end face of the through groove on the front flexible seal 31 and the end face of the through groove on the rear flexible seal 33 are separated by a distance a in the through groove on the middle rigid support body 32; when the conductive ring component 2 is pressed into the first segmented shell 11 in the transducer shell 1 by an external force, and the surface on the outer conductive ring 21 is closely attached to the surface on the first segmented shell 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 T-shaped part on the front flexible seal 31 goes deeper into the through groove 32A on the middle rigid support body 32, and at the same time due to The above-mentioned first segmented shell 11 supports the rear flexible seal 33 toward the middle rigid support body 32, so that the T-shaped part on the rear flexible seal 33 goes deeper into the through groove on the middle rigid support body 32. As a result, the separation distance a between the upper end surface of the front flexible seal 31 and the upper end surface of the rear flexible seal 33 in the through groove on the middle rigid support body 32 is reduced to a separation distance b. It is very easy to adjust the size or structure of the front flexible seal 31, the middle rigid support body 32 and the rear flexible seal 33 so that the above-mentioned separation distance b is small enough to ensure that when the manual control wire 4 passes through the front flexible seal 31, the middle rigid support body 32 and the rear flexible seal 33, the manual control wire 4 does not contact the inner wall of the through groove on the middle rigid support body 32.

[0027] When the conductive ring assembly 2 is pressed by external force into the first segment housing 11 of the transducer housing 1, a through slot larger than the through slot is provided near the through slot of the T-shaped portion on the rear flexible seal 33 to form a stepped slot with the through slot. There is a curve where the through slot intersects with the rear flexible seal 33, and the curve extends into the through slot on the first segment housing 11 due to the compression of the rear flexible seal 33. As a result, when the manual wire 4 passes through the through slot on the first segment housing 11, it can be ensured that the manual wire 4 is not squeezed by the through slot on the first segment housing 11.

[0028] The specific state of the above-mentioned unpressed conductive ring assembly 2 or the conductive ring assembly 2 being pressed into the first segmented shell 11 in the transducer housing 1 by external force can ensure that the manual control wire 4 is surrounded by the surface of the flexible element when passing through the threading sealing assembly 3, the first segmented shell 11, the flexible support body 51 and the second segmented shell 12, and the manual control wire will not suffer damage such as outer layer breaking or falling off in these surrounded places, and will not be disconnected, thereby causing a short circuit or open circuit between the manual control wire and the transducer housing.

[0029] The present invention ensures the sealing of the pressed surface by compressing and deforming the front flexible seal 31 and the rear flexible seal 33 during the process of pressing and assembling 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, and at the same time, the conductive ring assembly 23 is tightly attached to the front flexible seal 31, and the groove of the welding manual control wire 4 is covered and sealed in the axial direction; the front flexible seal 31 is tightly attached to the middle rigid support body 32, and the through groove on the front flexible seal 31 is covered and sealed in the axial direction; the rear flexible seal 33 is tightly attached to the middle rigid support body 32, and the through groove on the rear flexible seal body 33 is covered and sealed in the axial direction; the rear flexible seal 33 is tightly attached to the first segmented housing 11, and the stepped groove on the rear flexible seal 33 is covered and sealed in the axial direction. In this way, when the manual control wire 4 passes through the threading sealing assembly 3 and the first segmented housing 11, the cavities on the path passed by are covered and sealed in the axial direction.

[0030] The front flexible seal 31 and the rear flexible seal 33 are compressed and deformed to ensure the sealing of the compressed surface, preferably in the radial direction. When the conductive ring assembly 2 is pressed into the first segmented housing 11 in the transducer housing 1, the rear flexible seal 33 is compressed, and at the same time, the outer surface of the rear flexible seal 33 is in close contact with the inner surface of the first segmented housing 11, and the through groove in the first segmented housing 11 is covered and sealed in the radial direction. In this way, the cavities on the path passed by the manual wire 4 when passing through the threading seal assembly 3 and the first segmented housing 11 are all covered and sealed in the radial direction.

[0031] In summary, the hand-controlled wire 4 is surrounded by the surface of the soft component on the path through which it passes, and the hand-controlled wire will not be damaged in these surrounded places, such as the outer layer breaking or falling off, and will not be disconnected, thereby causing a short circuit or open circuit between the hand-controlled wire and the transducer housing; the cavity on the path through which the hand-controlled wire 4 passes is covered and sealed in the axial and radial directions, and water will not enter the housing to cause a short circuit between the hand-controlled wire and the transducer housing. The hand-controlled signal will not fail to be transmitted, nor will it cause the ultrasonic knife to be unable to be activated and used during surgery.

[0032] Furthermore, in a preferred embodiment, the inner conductive ring assembly 23 may include an inner conductive ring sheet having an outer edge end extending outward, and an outer edge surface is provided on the outer edge end, and the outer edge surface is tightly attached to the welding ring sheet to ensure that the inner conductive ring sheet 231 and the welding ring sheet 232 are electrically conductive, and the inner conductive ring sheet 231 has a cavity to avoid the welding point on the welding ring sheet, and the welding ring sheet 232 has a groove, and the manual wire 4 and the welding ring sheet 232 are sealed and welded at the groove to realize the electrical connection with the inner conductive ring sheet 231. The electrical connection between the manual wire 4 and the welding ring sheet 232 can also be achieved by riveting, bonding, etc. The outer edge end can also extend in the axially outward, axially inward, radially inward, etc.; the shape of the outer edge end can also be strip-shaped, or fan-shaped, etc.

[0033] Further, the inner conductive ring assembly 23 can be a separate type, including at least two conductive parts, which are an inner conductive ring piece 231 and a welding ring piece 232 in this embodiment; the inner conductive ring assembly 23 can also be an integral conductive part 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, an outer edge surface, a groove and a cavity on the outer edge end, and the manual wire 4 and the inner conductive ring are sealed and welded at the groove to achieve electrical connection with the inner conductive ring. The electrical connection between the manual wire 4 and the inner conductive ring can also be achieved by riveting, bonding and the like. The above-mentioned outer edge end can also extend in the axially outward, axially inward, radially inward and other directions; the shape of the outer edge end can also be strip-shaped, or fan-shaped and the like.

[0034] Furthermore, the threading seal assembly 3 may have different structural combinations, specifically:

[0035] In this embodiment, the rear flexible seal 33 is provided with a through groove in the T-shaped portion, and the front flexible seal is provided with a through groove. The T-shaped portion of the rear flexible seal 33 extends into the through groove on the middle rigid support body and extends into the through groove of the front flexible seal. The through groove of the T-shaped portion of the rear flexible seal 33 also extends into the through groove on the middle rigid support body into the through groove on the front flexible seal.

[0036] In this embodiment, the front seal is provided with a through groove in the T-shaped portion, and the rear seal is provided with a through groove. A through groove larger than the above-mentioned through groove is provided on the front flexible seal near the through groove to match the through groove on the rear flexible seal. The T-shaped portion on the front flexible seal extends into the through groove on the middle rigid support body and extends all the way into 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 at the same time, and the larger through groove on the T-shaped portion on the front flexible seal extends all the way into the larger through groove on the T-shaped portion on the rear flexible seal;

[0037] In this embodiment, the threading seal assembly includes an intermediate flexible support body, and preferably, an outer edge portion is provided on the intermediate flexible support body. The intermediate flexible support body is embedded in a through groove on the intermediate 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 groove in the T-shaped portion. A through groove is provided on the front flexible seal. A through groove is provided on the rear flexible seal. Preferably, a through groove larger than the above-mentioned through groove is provided near the through groove on the T-shaped portion of the intermediate flexible support body to match the through groove on the rear flexible seal. The T-shaped portion on the intermediate flexible support body extends into the through groove on the front flexible seal, and the T-shaped portion on the intermediate flexible support body extends into the through groove on the rear flexible seal. Accordingly, one end of the through groove on the intermediate flexible support body extends into the through groove on the front flexible seal, and the other end extends into the through groove on the rear flexible seal;

[0038] In this embodiment, the threading seal assembly includes a flexible seal and a rigid support body. There is a protruding portion on the flexible seal, and a through groove is provided on the protruding portion. A through groove is provided on the rigid support body, 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 portions on the protruding portion of the flexible seal, and the two T-shaped portions extend outward at both ends of the protruding portion to the outside of the through groove on the rigid support body and cover the through groove.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ultrasonic transducer threading sealing structure, It is characterized in that The invention comprises: a transducer housing, a conductive ring assembly arranged in the transducer housing, a threading sealing assembly and a manual control wire, wherein the manual control wire passes through the threading sealing assembly and the transducer housing. The conductive ring assembly includes an outer conductive ring electrically connected to the transducer housing to transmit one of the positive and negative hand control signals, an inner conductive ring electrically connected to the hand control wire to transmit the other of the positive and negative hand control signals, and an insulator disposed between the outer conductive ring and the inner conductive ring. The threading seal assembly is sealed and connected between the inner conductive ring and the transducer housing, and includes a front flexible seal, an intermediate rigid support body and a rear flexible seal. The front flexible seal is tightly fitted with the inner conductive ring, and the intermediate rigid support body is tightly arranged between the front flexible seal and the rear flexible seal. The transducer housing is provided with a first through slot for the manual control wire to pass through; The front flexible seal is provided with a second through slot for the manual control wire to pass through, and the front flexible seal covers the connection between the manual control wire and the inner conductive ring so that the front flexible seal, the manual control wire and the inner conductive ring are sealed and connected; The rear flexible seal is provided with a third through slot for the hand-controlled wire to pass through, and the rear flexible seal is tightly fitted with the transducer housing so that the rear flexible seal, the hand-controlled wire and the transducer housing are sealed and connected; The intermediate rigid support body is provided with a fourth through slot, the front flexible seal and the rear flexible seal are respectively provided with protrusions inserted into the fourth through slot, and the second through slot and the third through slot respectively extend into the corresponding protrusions; When the conductive ring assembly is not compressed, the end face of the second through groove of the front flexible seal and the end face of the third through groove of the rear flexible seal are separated by a distance a in the fourth through groove of the middle rigid support body. When the conductive ring assembly is pressed into the first segmented shell in the transducer shell by external force and the surface on the outer conductive ring is made to be in close contact with the surface on the first segmented shell, the separation distance a between the upper end face of the front flexible seal and the upper end face of the rear flexible seal in the fourth through groove on the middle rigid support body is changed to a separation distance b, so that when the manual control wire passes through the front flexible seal, the middle rigid support body and the rear flexible seal, the manual control wire does not contact the inner wall of the fourth through groove on the middle rigid support body.

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