Balloon and ultrasonic system

Abstract

The utility model provides a balloon and an ultrasonic system, and relates to the technical field of medical instruments, the balloon comprises a shell, an inner tube and at least one pair of focused ultrasonic transducers, the inner tube is arranged in the shell in a penetrating manner, and a section of cavity is formed between the inner tube and the shell; and each pair of focused ultrasonic transducers is symmetrically arranged on the outer peripheral surface of the inner tube in the cavity. The focused ultrasonic transducer is adopted to focus ultrasonic beams, so that a stronger ablation effect can be formed in a treatment area by utilizing lower ultrasonic energy. Meanwhile, the lower ultrasonic beam does not damage the blood vessel wall and normal tissues on the ultrasonic beam path before being focused; after ultrasonic beams are focused, a beam focus is formed in a focusing area, so that a stronger cavitation effect and a better heat effect are achieved, and ablation treatment can be completed within a short time. Meanwhile, focused ultrasound has targeted directivity, and the focus points to which the tissue is ablated, so that large-area treatment in the whole sound field area of the circular tube and the planar ultrasonic transducer is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a balloon and an ultrasonic system. Background Art

[0002] At present, the ultrasonic transducer in the balloon ultrasound system is either a circular tube ultrasonic transducer or a planar ultrasonic transducer. When a circular tube or cylindrical transducer is used for intravascular treatment, because the ultrasonic output is sent to all sides at the same time, there is a risk of causing stenosis and dissection of the blood vessel, causing damage to the normal tissue on the ultrasonic propagation path, and the treatment area within the entire sound field area is too large. Utility Model Content

[0003] The utility model provides a balloon, which is used to solve the problems of damaging normal tissue and overly large treatment area in the prior art.

[0004] The utility model provides a balloon, comprising:

[0005] shell;

[0006] An inner tube is inserted into the outer shell, and a cavity is formed between the inner tube and the outer shell;

[0007] At least one pair of focused ultrasonic transducers, each pair of the focused ultrasonic transducers is symmetrically arranged on the outer peripheral surface of the inner tube in the cavity, and a concave surface for focusing is arranged on a side of the focused ultrasonic transducer away from the inner tube.

[0008] A balloon provided according to an embodiment of the utility model further includes:

[0009] The reed is arranged on a side of the focused ultrasonic transducer away from the inner tube.

[0010] A balloon provided according to an embodiment of the utility model further includes:

[0011] The base is arranged between the focused ultrasonic transducer and the inner tube.

[0012] A balloon provided according to an embodiment of the utility model further includes:

[0013] The heat insulation layer is arranged on the outer peripheral surface of the inner tube and is located in the cavity.

[0014] A balloon provided according to an embodiment of the utility model further includes:

[0015] A temperature sensor is arranged on the inner wall of the cavity, and the position of the temperature sensor corresponds to the position of the focused ultrasonic transducer.

[0016] According to a balloon provided by an embodiment of the utility model, the shell includes an expanded diameter section and two reduced diameter sections, the expanded diameter section is located between the two reduced diameter sections, the two ends of the expanded diameter section are connected to the two reduced diameter sections in a one-to-one correspondence, the inner diameter of the expanded diameter section is larger than the inner diameter of the reduced diameter section, and the cavity is located between the expanded diameter section and the inner tube.

[0017] According to a balloon provided by an embodiment of the utility model, the outer diameter of the connection between the expanded diameter section and the reduced diameter section gradually decreases from the expanded diameter section to the reduced diameter section.

[0018] The utility model also provides an ultrasound system, comprising a control device and any one of the above-mentioned balloons, wherein the control device is electrically connected to a focused ultrasound transducer.

[0019] According to an ultrasonic system provided by an embodiment of the utility model, the control device includes:

[0020] A control handle, electrically connected to the focused ultrasonic transducer, wherein the control handle is connected to the housing;

[0021] A host, electrically connected to the control handle;

[0022] The circulating water component is electrically connected to the host.

[0023] According to an ultrasonic system provided by an embodiment of the utility model, the control device includes:

[0024] A foot switch is electrically connected to the host.

[0025] The balloon provided by the embodiment of the utility model can use lower ultrasonic energy to form a stronger ablation effect in the treatment area by focusing the ultrasonic beam with a focused ultrasonic transducer. At the same time, the lower ultrasonic beam will not damage the blood vessel wall and normal tissue on the ultrasonic beam path before it is focused; after the ultrasonic beam is focused, a beam focus is formed in the focus area to achieve a stronger cavitation effect and thermal effect, and ablation treatment can be completed in a short time. At the same time, focused ultrasound has targeted directionality, and tissues are ablated wherever the focus is pointed, avoiding large-area treatment in the entire sound field area of ​​the circular tube and planar ultrasonic transducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1It is a structural schematic diagram of an ultrasound system provided by an embodiment of the utility model.

[0028] Reference numerals:

[0029] 10. Shell; 11. Cavity; 12. Expanded diameter section; 13. Reduced diameter section; 20. Inner tube; 30. Focused ultrasonic transducer; 31. Concave surface; 40. Reed; 50. Base; 60. Insulation layer; 70. Temperature sensor; 100. Control handle; 200. Main unit; 300. Circulating water assembly; 400. Foot switch. DETAILED DESCRIPTION

[0030] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0031] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0033] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0035] like Figure 1 As shown, the balloon includes an outer shell 10, an inner tube 20 and at least one pair of focused ultrasonic transducers 30. The inner tube 20 is inserted into the inner shell 10, and a cavity 11 is formed between the inner tube 20 and the outer shell 10. Each pair of focused ultrasonic transducers 30 is symmetrically arranged on the outer circumference of the inner tube 20 in the cavity 11. A concave surface 31 for focusing is arranged on the side of the focused ultrasonic transducer 30 away from the inner tube 20. The concave surface 31 can play a certain energy focusing role, so that the sound beam emitted by the focused ultrasonic transducer 30 is focused on a certain point or a certain area.

[0036] The balloon provided by the embodiment of the utility model can use lower ultrasonic energy to form a stronger ablation effect in the treatment area by focusing the ultrasonic beam with a focused ultrasonic transducer 30. At the same time, the lower ultrasonic beam will not damage the blood vessel wall and normal tissue on the ultrasonic beam path before it is focused; after the ultrasonic beam is focused, a beam focus is formed in the focus area to achieve a stronger cavitation effect and thermal effect, and ablation treatment can be completed in a short time. At the same time, focused ultrasound has targeted directionality, and tissues are ablated wherever the focus is pointed, avoiding large-area treatment in the entire sound field area of ​​the circular tube and the planar ultrasonic transducer.

[0037] In one embodiment of the utility model, the outer shell 10 is a tubular structure, and the outer shell 10 is sleeved on the outer periphery of the inner tube 20. On the one hand, the outer shell 10 can provide support for the inner tube 20 to ensure that the inner tube 20 has a certain strength for easy operation; on the other hand, the outer shell 10 can protect the inner tube 20.

[0038] In one embodiment of the utility model, the focused ultrasonic transducer 30 is a focused piezoelectric ceramic sheet, which can generate an ultrasonic sound beam after being energized. Of course, the specific type of the focused ultrasonic transducer 30 is not limited thereto, and it can also be other types of ultrasonic transducers. The length of the focused piezoelectric ceramic sheet is 1-15 mm, the width is 0.2-10 mm, and the thickness is 0.1-2 mm. The side of the focused ultrasonic transducer 30 facing the inner tube 20 is the negative pole of the focused ultrasonic transducer 30, and the side of the focused ultrasonic transducer 30 facing away from the inner tube 20 is the positive pole of the focused ultrasonic transducer 30.

[0039] In one embodiment of the present invention, the balloon includes a pair of focused ultrasonic transducers 30, and the two focused ultrasonic transducers 30 are symmetrically arranged. Of course, the number of focused ultrasonic transducers 30 is not limited thereto, and four, six or more focused ultrasonic transducers 30 may also be provided.

[0040] The balloon of the utility model adopts a focused ultrasonic transducer 30 in the renal artery sympathetic nerve regulation or ablation balloon. The focused ultrasonic transducer 30 can use relatively low ultrasonic energy output, but form higher ultrasonic energy at the focus than circular tube and planar ultrasonic transducers, thereby achieving better treatment effect.

[0041] In one embodiment of the utility model, the balloon further includes a reed 40, which is disposed on the side of the focused ultrasonic transducer 30 away from the inner tube 20, that is, the reed 40 is disposed on the positive electrode of the focused ultrasonic transducer 30. The reed 40 is disposed to facilitate the connection of the wire with the positive electrode of the focused ultrasonic transducer 30. The reed 40 is made of metal and has a rectangular sheet structure. Of course, the reed 40 can also be a circular sheet or other shapes. During assembly, the reed 40 is electrically connected to the negative output terminal of the control handle 100 through the negative wire, and the positive electrode of the focused ultrasonic transducer 30 is electrically connected to the positive output terminal of the control handle 100 through the positive wire.

[0042] Preferably, a plurality of protrusions (not shown) are provided on one side of the reed 40 away from the focused ultrasonic transducer 30, the plurality of protrusions are arranged at intervals, and the protrusions are formed by stamping the reed 40. Providing the protrusions can increase the contact surface when the wire is welded to the reed 40, improve the strength of the wire after welding, ensure that the wire is more firmly welded to the reed 40, avoid the wire from falling off during the vibration of the focused ultrasonic transducer 30, and improve the stability of the balloon.

[0043] Preferably, a clamping portion (not shown) is provided on the side of the reed 40 away from the focused ultrasonic transducer 30, and the clamping portion includes two clamping pieces arranged at intervals, the two clamping pieces are integrally formed with the reed 40, and the connecting end of the wire is clamped between the two clamping pieces and welded to the clamping pieces. When connecting the connecting end of the wire to the reed 40, firstly use a tool to clamp the connecting end of the wire between the two clamping pieces, and then use solder to weld the connecting end of the wire to the clamping piece.

[0044] In one embodiment of the utility model, the balloon also includes a base 50, which is arranged between the focused ultrasonic transducer 30 and the inner tube 20. The focused ultrasonic transducer 30 is adhesively connected to the side of the base 50 facing away from the inner tube 20. The provision of the base 50 can improve the stability of the focused ultrasonic transducer 30 after installation.

[0045] Furthermore, the base 50 is adhesively connected to the inner tube 20, and an arc-shaped concave surface is provided on the side of the base 50 facing the inner tube 20, and the curvature of the arc-shaped concave surface is adapted to the curvature of the outer peripheral surface of the inner tube 20, so that there is a larger contact area between the base 50 and the inner tube 20, thereby improving the connection strength between the base 50 and the inner tube 20.

[0046] Furthermore, a groove is provided on the side of the base 50 facing away from the inner tube 20, the shape of the groove is adapted to the shape of the focused ultrasonic transducer 30, the focused ultrasonic transducer 30 is embedded in the groove, and the focused ultrasonic transducer 30 is adhesively connected to the inner wall of the groove. Providing the groove can enhance the stability of the focused ultrasonic transducer 30 after it is fixed.

[0047] In one embodiment of the utility model, the balloon further includes a heat-insulating layer 60, which is disposed on the outer peripheral surface of the inner tube 20 and is located in the cavity 11. Since a large amount of heat is generated during the operation of the focused ultrasonic transducer 30, resulting in an increase in the temperature in the cavity 11, excessively high temperature may cause the inner tube 20 to deform, affecting the normal operation of the balloon, and therefore a heat-insulating layer 60 is disposed on the outer peripheral surface of the inner tube 20, and the heat-insulating layer 60 may effectively reduce the effect of heat on the inner tube 20. The heat-insulating layer 60 may be a layer of heat-insulating material adhered to the outer peripheral surface of the inner tube 20, or may be a layer of heat-insulating coating applied to the outer peripheral surface of the inner tube 20. The length of the heat-insulating layer 60 is greater than the length of the focused ultrasonic transducer 30, and preferably, the length of the heat-insulating layer 60 is the same as the length of the cavity 11, that is, the heat-insulating layer 60 covers all the inner tubes 20 in the cavity 11.

[0048] In one embodiment of the utility model, the balloon further includes a temperature sensor 70, which is disposed on the inner wall of the cavity 11, and the position of the temperature sensor 70 corresponds to the position of the focused ultrasonic transducer 30. The temperature sensor 70 is electrically connected to the control handle 100 through a wire, and the temperature sensor 70 is used to detect the temperature of the focused ultrasonic transducer 30, and convert the detected temperature value into an electrical signal and send it to the control handle 100, and finally display it through the host 200, so that the doctor can grasp the temperature of the focused ultrasonic transducer 30 in real time during the operation.

[0049] In one embodiment of the utility model, the outer shell 10 includes an expanded diameter section 12 and two reduced diameter sections 13, the expanded diameter section 12 is located between the two reduced diameter sections 13, and both ends of the expanded diameter section 12 are connected to the two reduced diameter sections 13 one by one. Preferably, the expanded diameter section 12 and the reduced diameter section 13 are integrally formed, the inner diameter of the expanded diameter section 12 is larger than the inner diameter of the reduced diameter section 13, the expanded diameter section 12 is coaxially arranged with the inner tube 20, the cavity 11 is located between the expanded diameter section 12 and the inner tube 20, and the cross-section of the cavity 11 is annular.

[0050] In one embodiment of the present invention, the outer diameter of the connection between the expanded diameter section 12 and the reduced diameter section 13 gradually decreases from the expanded diameter section 12 to the reduced diameter section 13, so that the outer peripheral surface of the connection between the expanded diameter section 12 and the reduced diameter section 13 is conical. The conical outer peripheral surface can reduce resistance and facilitate the balloon to enter the body.

[0051] Combine the following Figure 1 Describe a specific embodiment of the utility model, such as Figure 1 As shown, the balloon includes an outer shell 10 , an inner tube 20 , two focused ultrasound transducers 30 , two reeds 40 , two bases 50 , a heat insulating layer 60 and a temperature sensor 70 .

[0052] The inner tube 20 is inserted into the outer shell 10, and the inner tube 20 is hollow. The outer shell 10 is a hollow tube body, and includes an expanded diameter section 12 and two reduced diameter sections 13. The expanded diameter section 12 is located between the two reduced diameter sections 13, and the two ends of the expanded diameter section 12 are connected to the two reduced diameter sections 13 in a one-to-one correspondence. The expanded diameter section 12 and the reduced diameter section 13 are integrally formed, and the inner diameter of the expanded diameter section 12 is larger than the inner diameter of the reduced diameter section 13. The expanded diameter section 12 and the inner tube 20 are coaxially arranged, and a cavity 11 is formed between the expanded diameter section 12 and the inner tube 20, and the cross section of the cavity 11 is annular. The outer diameter of the connection between the expanded diameter section 12 and the reduced diameter section 13 gradually decreases from the expanded diameter section 12 to the reduced diameter section 13, so that the outer peripheral surface of the connection between the expanded diameter section 12 and the reduced diameter section 13 is tapered.

[0053] The two bases 50 are symmetrically arranged on the outer peripheral surface of the inner tube 20 in the cavity 11, and the two focused ultrasonic transducers 30 are bonded one by one to the sides of the two bases 50 facing away from the inner tube 20. The side of the focused ultrasonic transducer 30 facing away from the inner tube 20 is provided with a concave surface 31 for focusing. The concave surface 31 can play a certain energy focusing role, so that the sound beam emitted by the focused ultrasonic transducer 30 is focused on a certain point or a certain area.

[0054] The heat insulation layer 60 is arranged on the outer peripheral surface of the inner tube 20 and is located in the cavity 11. The length of the heat insulation layer 60 is the same as the length of the cavity 11. Two reeds 40 are arranged one by one on the side of the focused ultrasonic transducer 30 away from the inner tube 20. The reed 40 is connected to the positive electrode of the focused ultrasonic transducer 30. The material of the reed 40 is metal material. The reed 40 is a rectangular sheet structure. The reed 40 is electrically connected to the negative output end of the control handle 100 through the negative lead wire, and the positive electrode of the focused ultrasonic transducer 30 is electrically connected to the positive output end of the control handle 100 through the positive lead wire. The temperature sensor 70 is arranged on the inner wall of the cavity 11. The position of the temperature sensor 70 corresponds to the position of the focused ultrasonic transducer 30. The temperature sensor 70 is electrically connected to the control handle 100 through a wire. The temperature sensor 70 is used to detect the temperature of the focused ultrasonic transducer 30 and convert the detected temperature value into an electrical signal and send it to the control handle 100.

[0055] The utility model further provides an ultrasound system, which includes a control device and the balloon described in any one of the above embodiments, wherein the control device is electrically connected to the focused ultrasound transducer 30 .

[0056] In one embodiment of the utility model, the control device includes a control handle 100, a host 200 and a circulating water assembly 300, the control handle 100 is electrically connected to the focused ultrasonic transducer 30, and the control handle 100 is connected to the housing 10. The host 200 is electrically connected to the control handle 100, and the circulating water assembly 300 is electrically connected to the host 200.

[0057] In one embodiment of the present invention, the control device includes a foot switch 400, which is electrically connected to the host 200. The foot switch 400 can quickly output and terminate the output, avoiding accidental ultrasound output due to misoperation. Compared with the traditional use of a switch on the handle to control the renal artery sympathetic nerve regulation or ablation ultrasound output, the use of the foot switch 400 for control operation is more convenient and safer.

[0058] The control handle 100 is connected to the balloon, and the driving mechanism inside the control handle 100 can rotate and drive the focused ultrasonic transducer 30 in the balloon to rotate. The focused ultrasonic transducer 30 emits ultrasound while rotating to achieve intravascular circumferential ultrasonic treatment and ablation. The driving mechanism includes a transmission member connected to the motor and the motor shaft, and the transmission member is connected to the balloon. The control handle 100 adopts a quick-insert self-locking structure, which is convenient for quick connection and avoids accidental pulling during use to cause separation from the host 200; since the control handle 100 is the same as the existing control handle, the specific structure is no longer described in detail. The host 200 is used for human-computer interaction, and treatment information input and parameter information feedback can be performed through the host 200. The foot switch 400 can quickly output and terminate the output to avoid accidental ultrasonic output caused by misoperation. The circulating water component 300 is driven by a pump to provide cooling, and the pump rotation is controlled by software to drive the balloon to expand and contract.

[0059] Working principle of the ultrasonic system: liquid is pre-infused into the balloon, and the liquid can be saline or other liquids. When the foot switch 400 is stepped on, the foot switch 400 transmits an opening signal to the host 200, and the host 200 starts the control handle 100 through the internal control system. The control handle 100 transmits an electrical signal of a specific frequency to the focusing piezoelectric ceramic sheet through the positive and negative wires, and the focusing piezoelectric ceramic sheet generates a corresponding ultrasonic signal under the excitation of the electrical signal to complete the ablation or nerve regulation work. The rotation of the balloon structure can be controlled by the driving mechanism inside the control handle 100 to achieve all-round ablation or nerve regulation. During the working process, the temperature sensor 70 continuously monitors the temperature of the focusing piezoelectric ceramic sheet. When the temperature of the focusing piezoelectric ceramic sheet is greater than or equal to the predetermined threshold, the temperature sensor 70 transmits an electrical signal to the control handle 100 through the wire, and the control handle 100 controls the operation of the focusing piezoelectric ceramic sheet. When the ultrasonic system completes the working target, the system automatically stops working. During the working process, the circulating water component 300 works continuously to take away the heat generated by the focusing piezoelectric ceramic piece during the working process, thereby ensuring that the temperature of the focusing piezoelectric ceramic piece will not be too high during the working process.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A balloon, characterized in that: include: shell; An inner tube is inserted into the outer shell, and a cavity is formed between the inner tube and the outer shell; At least one pair of focused ultrasonic transducers, each pair of the focused ultrasonic transducers is symmetrically arranged on the outer peripheral surface of the inner tube in the cavity, and a concave surface for focusing is arranged on a side of the focused ultrasonic transducer away from the inner tube.

2. The balloon according to claim 1, characterized in that Also includes: The reed is arranged on a side of the focused ultrasonic transducer away from the inner tube.

3. The balloon according to claim 1, characterized in that Also includes: The base is arranged between the focused ultrasonic transducer and the inner tube.

4. The balloon according to claim 1, characterized in that: Also includes: The heat insulation layer is arranged on the outer peripheral surface of the inner tube and is located in the cavity.

5. The balloon according to claim 1, characterized in that Also includes: A temperature sensor is arranged on the inner wall of the cavity, and the position of the temperature sensor corresponds to the position of the focused ultrasonic transducer.

6. The balloon according to any one of claims 1 to 5, characterized in that: The outer shell includes an expanding section and two reducing sections, the expanding section is located between the two reducing sections, both ends of the expanding section are connected to the two reducing sections in a one-to-one correspondence, the inner diameter of the expanding section is larger than the inner diameter of the reducing section, and the cavity is located between the expanding section and the inner tube.

7. The balloon according to claim 6, characterized in that The outer diameter of the connection between the expanding diameter section and the reducing diameter section gradually decreases from the expanding diameter section to the reducing diameter section.

8. An ultrasound system, characterized in that: The invention comprises a control device and the balloon according to any one of claims 1 to 7, wherein the control device is electrically connected to the focused ultrasound transducer.

9. The ultrasound system according to claim 8, characterized in that The control device comprises: A control handle, electrically connected to the focused ultrasonic transducer, wherein the control handle is connected to the housing; A host, electrically connected to the control handle; A circulating water component is electrically connected to the host.

10. The ultrasound system according to claim 9, characterized in that The control device comprises: A foot switch is electrically connected to the host.

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