Ultrasonic focusing treatment head

Abstract

The utility model relates to an ultrasonic focusing treatment head which is characterized in that the front surface of a base is a spherical surface, the spherical surface is provided with a plurality of concave parts, the center of the base is provided with a hollow part penetrating through the front surface and the back surface, a B-ultrasonic probe is installed and fixed in the hollow part of the base in a waterproof mode, and a plurality of transducers are installed in the concave parts at intervals in a waterproof mode around the B-ultrasonic probe. The central points of the transducers are located on the same plane, the plane is perpendicular to the central axis, the central points of the transducers are located on the same circle with the circle center located on the central axis, the distances between the central points of the adjacent transducers are equal, and the focus points of the transducers are located at the same position on the central axis. According to the ultrasonic focusing treatment head provided by the utility model, the focusing points of the plurality of transducers which are mounted in the concave part of the spherical surface in a waterproof manner are positioned at the same position on the central axis, so that the energy of the plurality of transducers can be mutually overlapped to form an energy-concentrated high-energy field of which the appearance is very close to a circle, and the ablation time is shortened.

Description

Technical Field

[0001] The utility model relates to a medical device, and more specifically to an ultrasonic focusing treatment head. Background Art

[0002] High-intensity focused ultrasound (HIFU) ablation technology achieves fractional ablation of target tissue by precisely focusing ultrasound within the target area. Many existing ultrasound treatment heads use a single low-power transducer with a small focus. Therefore, it usually takes several hours to complete the ablation of the target tissue and the patient needs to maintain an uncomfortable position such as lying prone for a long time, which is very painful. In order to achieve the focusing of high-power ultrasound, some ultrasound treatment heads use a planar piezoelectric ceramic sheet plus an acoustic lens focusing structure, and some ultrasound treatment heads use a number of low-power transducers to increase the power in a phased array focusing manner. This method has a complex manufacturing process and is very difficult to control the precision. It is difficult to focus the focus points of multiple transducers to one point, which affects the accuracy of the ultrasound target dose and makes it difficult to form an ideal energy field to achieve rapid ablation of the target tissue. Utility Model Content

[0003] In order to solve the problems in the prior art that it is difficult to form an ideal energy field, the utility model provides an ultrasonic focusing treatment head.

[0004] According to the ultrasonic focusing treatment head of the utility model, it includes a base, a B-ultrasound probe and multiple transducers, wherein the base has a relative front and back, the front of the base is a spherical surface, the spherical surface has multiple recessed parts, the center of the base has a hollow part that runs through the front and back, the B-ultrasound probe is waterproofly installed and fixed in the hollow part of the base, and multiple transducers are waterproofly installed in the recessed part around the B-ultrasound probe at intervals, the base has a central axis, the center points of the multiple transducers are located on the same plane, the plane is perpendicular to the central axis, the center points of the multiple transducers are on a circle with a center located on the central axis, and the distances between the center points of adjacent transducers are equal, and the focusing points of the multiple transducers are located at the same position on the central axis.

[0005] Preferably, the vertical distances between the center points of the multiple transducers and the central axis are equal, and the angles between the center axes of the multiple transducers and the central axis are equal.

[0006] Preferably, the center point of the B-ultrasound probe is located on the central axis.

[0007] Preferably, the ultrasonic focusing therapy head further comprises a plurality of first sealing rings, and each transducer is waterproofly mounted in the recessed portion via the first sealing rings.

[0008] Preferably, the ultrasonic focusing treatment head further comprises a protective cover, which is mounted and fixed on the back side of the base.

[0009] Preferably, the protective cover has an interface for connecting to a robot arm.

[0010] Preferably, the protective cover and the hollow portion of the base define a chamber, and the ultrasound focusing therapy head further comprises a probe protective shell accommodated in the chamber.

[0011] Preferably, the probe protective shell comprises a protective shell body and an end cover which are sealed and connected, the end cover has an opening, and the B-ultrasound probe is accommodated in the probe protective shell with its head extending out of the opening.

[0012] Preferably, the ultrasonic focusing therapy head further comprises a second sealing ring, and the probe housing is waterproofly mounted in the hollow portion of the base via the second sealing ring.

[0013] Preferably, the ultrasonic focusing treatment head further comprises a waterproof sheath, which at least covers the sealed connection between the back side of the base and the protective cover, and the joint between the protective cover and the cable.

[0014] According to the ultrasonic focusing treatment head of the utility model, by setting the front side of the base as a spherical surface with multiple recessed parts, the focusing points of multiple transducers installed in the recessed parts in a waterproof manner are located at the same position on the central axis, so that the energies of the multiple transducers can overlap with each other to form a high-energy field with concentrated energy whose shape is very close to a circle, thereby greatly improving the energy, increasing the focus size, and shortening the ablation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an ultrasound focusing treatment head according to a preferred embodiment of the utility model.

[0016] Figure 2 yes Figure 1 Exploded diagram.

[0017] Figure 3 yes Figure 1 sectional view of .

[0018] Figure 4 yes Figure 1 Front view of. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present utility model are given below in conjunction with the accompanying drawings and described in detail.

[0020] like Figure 1 As shown, the ultrasound focusing treatment head according to a preferred embodiment of the utility model comprises a base 1, a protective cover 2, a B-ultrasound probe 3, a plurality of transducers 4 and a cable 5, see Figure 2 The base 1 has a front side 11 and a back side 12 opposite to each other, and the center of the base 1 has a hollow portion 13 penetrating the front side 11 and the back side 12. Figure 1The protective cover 2 is fixedly mounted on the back side 12 of the base 1, the B-ultrasound probe 3 is fixedly mounted on the hollow part 13 of the base 1, a plurality of transducers 4 are waterproofly mounted on the front side 11 of the base 1 around the B-ultrasound probe 3 and spaced apart from each other, and the cable 5 is mounted on the end of the protective cover 2 away from the base 1.

[0021] like Figure 2 As shown, the ultrasonic focusing treatment head also includes a plurality of first sealing rings 6, and the front surface 11 of the base 1 is a spherical surface providing a treatment surface, and the spherical surface has a plurality of recessed portions 14, and each transducer 4 is waterproofly mounted on the recessed portion 14 through the first sealing ring 6. The treatment end of the ultrasonic treatment head is mostly operated in a coupling agent in a water bag or a small water tank, which requires the ultrasonic treatment head to have good waterproof performance. In order to improve the waterproof performance, the existing ultrasonic treatment head is provided with an overall waterproof layer covering all transducers. The power loss of the ultrasonic waves emitted by the transducers after passing through the waterproof layer is large, which affects the efficiency of ablation. Compared with the prior art, the transducer 4 of the utility model provides a waterproof function through the first sealing ring 6, can be directly used for underwater operation, avoids the power loss of the ultrasonic waves when passing through the waterproof layer, and can improve the ablation efficiency of the focused ultrasound. That is to say, the utility model not only ensures the waterproof performance of the ultrasonic focusing treatment head, but also enables the transducer 4 to directly contact the coupling agent, avoiding the energy loss of the transducer 4, by providing the first sealing ring 6 between the edge of the transducer 4 and the recessed portion 14.

[0022] like Figure 3 As shown, the base 1 has a central axis 1a, and the central points 4a of the multiple transducers 4 (i.e., the central points of each recessed portion 14) are located on the same plane 1b, which is perpendicular to the central axis 1a. The distances between the central points 4a of the multiple transducers 4 and the central axis 1a are equal, the angles between the central axes 4b of the multiple transducers 4 and the central axis 1a are equal, and the focal points 4c of the multiple transducers 4 are located at the same position on the central axis 1a. Compared with the prior art of phased array focusing, the multiple transducers 4 of the utility model are simple and convenient to install through the recessed portion 14, and the focal points 4c of the multiple transducers 4 are easily concentrated to one point, which improves the accuracy of the ultrasound target dose, reduces the loss of ultrasound energy, and can form an ideal energy field to achieve rapid ablation of the target tissue.

[0023] Back to Figure 2 The protective cover 2 includes a first cover body 21 and a second cover body 22, which are fastened together by bolts, for example, see Figure 1 and Figure 3 The first cover 21 has an interface 21a, and the ultrasound focusing therapy head can be installed on the mechanical arm along the installation axis 21b through the interface 21a. With the help of the mechanical arm, the position of the ultrasound focusing therapy head can be moved as needed. Figure 3The first ends of the first cover 21 and the second cover 22 are fastened to the back 12 of the base 1 by bolts, for example. The second ends of the first cover 21 and the second cover 22 provide cable interfaces for installing the cable 5. The middle of the first cover 21 and the second cover 22 and the hollow part 13 of the base 1 define a chamber C. The ultrasound focusing treatment head also includes a probe protective shell 7 accommodated in the chamber C, see Figure 2 The probe housing 7 includes a housing body 71 and an end cover 72 which are sealed and connected. The end cover 72 has an opening 72a. The B-ultrasound probe 3 is accommodated in the probe housing 7 and its head 3a extends out from the opening 72a. Figure 4 .

[0024] Back to Figure 2 The ultrasound focusing treatment head further includes a second sealing ring 8, and the probe housing 7 is waterproofly mounted in the hollow portion 13 of the base 1 through the second sealing ring 8. In this embodiment, there are two second sealing rings 8. In addition, the ultrasound focusing treatment head further includes a coaxial cable 9, see Figure 3 , which are respectively connected to the transducer 4 in the chamber C. Moreover, the ultrasound focusing therapy head may further include a waterproof sheath (not shown), which covers the sealed connection between the back surface 12 of the base 1 and the protective cover 2, and the joint between the protective cover 2 and the cable 5.

[0025] like Figure 4 As shown, a plurality of transducers 4 are evenly distributed and mounted on the base 1 around the probe housing 7. Figure 3 , the center point of the B-ultrasound probe 3 is located on the central axis 1a, the center points 4a of the multiple transducers 4 are on a circle whose center is located on the central axis 1a, and the distances between the center points 4a of adjacent transducers 4 are equal. In this embodiment, the ultrasound focusing treatment head includes five transducers 4. It should be understood that this number is only for example and not for limitation, and three or more transducers 4 can meet the ablation requirements of the ultrasound focusing treatment head of the utility model.

[0026] The above is only a preferred embodiment of the utility model, and is not intended to limit the scope of the utility model. The above embodiments of the utility model can also be modified in various ways. That is, all simple, equivalent changes and modifications made according to the claims and the contents of the specification of the utility model application fall within the scope of protection of the claims of the utility model patent. The conventional technical contents are not described in detail in the utility model.

Claims

1. An ultrasonic focusing therapy head, characterized in that: The ultrasonic focusing treatment head includes a base, a B-ultrasound probe and multiple transducers, wherein the base has a relative front and back, the front of the base is a spherical surface, the spherical surface has multiple recessed parts, the center of the base has a hollow part that runs through the front and back, the B-ultrasound probe is waterproofly installed and fixed in the hollow part of the base, and multiple transducers are waterproofly installed in the recessed part around the B-ultrasound probe at intervals, the base has a central axis, the center points of the multiple transducers are located on the same plane, the plane is perpendicular to the central axis, the center points of the multiple transducers are on a circle with a center located on the central axis, and the distances between the center points of adjacent transducers are equal, and the focusing points of the multiple transducers are located at the same position on the central axis.

2. The ultrasonic focusing therapy head according to claim 1, characterized in that: The vertical distances between the center points of the multiple transducers and the central axis are equal, and the angles between the center axes of the multiple transducers and the central axis are equal.

3. The ultrasonic focusing treatment head according to claim 1, characterized in that: The center point of the B-ultrasound probe is located on the central axis.

4. The ultrasonic focusing treatment head according to claim 1, characterized in that: The ultrasonic focusing treatment head also includes a plurality of first sealing rings, and each transducer is waterproofly mounted in the recessed portion via the first sealing rings.

5. The ultrasonic focusing treatment head according to claim 1, characterized in that: The ultrasonic focusing treatment head also includes a protective cover which is fixedly mounted on the back of the base.

6. The ultrasonic focusing treatment head according to claim 5, characterized in that: The protective cover has an interface for connecting to a robotic arm.

7. The ultrasonic focusing treatment head according to claim 5, characterized in that: The protective cover and the hollow part of the base define a chamber, and the ultrasound focusing treatment head also includes a probe protective shell accommodated and installed in the chamber.

8. The ultrasonic focusing treatment head according to claim 7, characterized in that: The probe protective shell comprises a protective shell body and an end cover which are sealed and connected. The end cover has an opening. The B-ultrasound probe is accommodated in the probe protective shell and the head thereof protrudes from the opening.

9. The ultrasonic focusing therapy head according to claim 8, characterized in that: The ultrasonic focusing treatment head also includes a second sealing ring, and the probe protective shell is waterproofly installed in the hollow part of the base through the second sealing ring.

10. The ultrasound focusing treatment head according to claim 5, characterized in that: The ultrasonic focusing treatment head also includes a waterproof sheath, which at least covers the sealed connection between the back side of the base and the protective cover, and the connection between the protective cover and the cable.

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