WO2007056912A1

WO2007056912A1 - Ultrasonic treatment head and ultrasonic treatment system including the same

Info

Publication number: WO2007056912A1
Application number: PCT/CN2006/001720
Authority: WO
Inventors: Long Wang; Yue Gu; Siyuan Yan; Mu Mu; Hai Wang
Original assignee: Chongqing Ronghai Medical Ultrasound Industry Ltd.
Priority date: 2005-11-18
Filing date: 2006-07-17
Publication date: 2007-05-24
Also published as: CN1966109A

Abstract

An ultrasonic treatment head and an ultrasonic treatment system including the same. The surface area where the body be contacted by the ultrasonic treatment head is 30000 to 35000 square millimeters. The shape of the ultrasonic treatment head can anastomose with that of the body surface where it is operating. The ultrasonic treatment system is provided with said ultrasonic treatment head above. The present invention can provide enough energy for the target area without hurting other tissues on the sound channel.

Description

Ultrasonic treatment head and ultrasonic treatment system containing the same

The invention belongs to the technical field of ultrasonic therapy, and particularly relates to an ultrasonic treatment head and an ultrasonic treatment system including the same. Background technique

Focused ultrasound therapy is a non-invasive, non-invasive treatment, especially suitable for the treatment of cancer patients, less damage to patients than traditional surgery or chemotherapy, so its application is very rapid development, indications include liver cancer, osteosarcoma, breast Cancer, pancreatic cancer, kidney cancer, soft tissue tumors, etc.

Prior art focused ultrasound therapy mostly uses different ultrasound treatment heads to treat different groups or individuals under the positioning and monitoring of B-ultrasound devices. Since the incident angle Θ of the fixed treatment head is fixed, the ultrasonic incident angle cannot be adjusted according to different patients, and the sound intensity per unit area (ie, ultrasonic energy) in the range of the acoustic channel cannot be reduced, when the unit area is When the sound intensity is too large, it is easy to cause damage to other parts of the human body. Figure 1 is a schematic view showing the structure of an ultrasonic treatment system in the prior art. In Fig. 1, the ultrasonic treatment head 1 is a spherical concave surface, and the concave surface corresponds to an incident angle Θ of about 65 °, and an outer diameter of generally 100-150 mm. The ultrasonic energy emitted by the treatment head can theoretically satisfy The need for treatment. However, in practical clinical applications, the anti-scattering of the bone by the bone reduces the therapeutic energy reaching the target area. In addition, when treating deep tumors, the attenuation of the ultrasound by other tissues on the ultrasonic sound channel also leads to the treatment required to reach the target area. The reduction in energy affects the therapeutic effect.

When using the ultrasound treatment system for treatment, it is necessary to ensure the total energy required to reach the target area, while ensuring that other tissues in the human body are not damaged, which is the basic condition for ultrasonic treatment. To determine the total ultrasound energy required for treatment, the effects of tissue between the target area and the ultrasound source on ultrasound (eg, reflection, absorption, scattering, etc.) must be considered. The size and spatial location of the treated tumor must also be considered. The range of energy required for coagulative necrosis, and the acoustic properties of other tissues on the ultrasonic acoustic channel, the units that may be tolerated The maximum sound intensity of the area also needs to be included in the treatment plan. Based on the above factors, to meet the treatment energy requirements, two methods are generally used: 1. Increase the emission energy of the ultrasound; 2. Remove the bone to reduce the attenuation of energy, such as removing the ribs when treating liver tumors. However, increased ultrasound energy increases the likelihood of bone, skin, and acoustic channel tissue damage; and the removal of bone to reduce energy attenuation can cause a patient's lifetime disability. Summary of the invention

The technical problem to be solved by the present invention is to provide a kind of defect that the ultrasonic treatment device is easy to cause harm to the patient in the prior art, and provide an ultrasonic energy that can satisfy the target region at the time of treatment without giving other tissue bands on the acoustic channel. An ultrasonic treatment head for serious injury and an ultrasonic treatment system containing the ultrasonic treatment head.

One technical solution adopted to solve the technical problem of the present invention is that the surface area of the ultrasonic treatment head in contact with the human body ranges from 30,000 to 35,000 square millimeters. The surface area of the ultrasonic treatment head is 1.5 to 2.5 times of the surface area of the existing ultrasonic treatment head, and the surface area of the ultrasonic treatment head in contact with the human body is increased, which is advantageous in the case where the total energy of the ultrasonic wave used is constant. Reducing the ultrasonic energy per unit area, that is, the sound intensity, will not cause damage to other tissues on the sound channel under the premise of ensuring the therapeutic effect.

Preferably, the shape of the ultrasonic treatment head in contact with the human body coincides with the shape of the body surface corresponding to the human body. The ultrasonic treatment head that conforms to the shape of the body surface at the contact with the human body, the incident angle of the ultrasonic wave is along the normal direction of the body surface, thereby reducing the loss of ultrasonic energy on the ultrasonic channel. The ultrasonic treatment head conforms to the geometry of the human body surface and refers to a macroscopic anastomosis, rather than being consistent with the shape of the human body surface at each location. Because the shape of each human body is not the same, the ultrasound treatment head can be matched with the shape of the human body surface to provide a series of ultrasonic treatment heads with different spherical curvatures to ensure the treatment of patients. Patients with different body shapes use ultrasonic treatment heads with different spherical curvatures to match the shape of the ultrasonic surface to the surface of the human body to achieve the best therapeutic effect.

The ultrasonic treatment head is in contact with the human body as a spherical surface. Due to the increase of the surface area of the spherical surface, in order to conform to the shape of the body surface of the human body, the incident angle of the spherical surface in the two directions of the X-axis and the Y-axis of the horizontal plane Θ Different from the size of α, the angle of incidence can be in the range of 90 ° - 110 ° (in the direction of the X axis), and the angle of incidence α can be in the range of 50 ° A 65 ° (along the Y-axis). Because the angle of incidence of the ultrasonic wave is affected by the relative position of the patient's lesion and the treatment head and the size of the outer diameter of the treatment head, the magnitude of the incident angle determines the sound intensity of other tissue units on the acoustic channel under the premise of ensuring the ultrasonic energy required for treatment. the size of. The larger the angle of incidence, the smaller the sound intensity per unit area and the less likely it is to cause harm to the patient. By weighing the size of the outer diameter of the ultrasonic treatment head and the surface area of the treatment head in contact with the skin of the patient's body surface, it is possible to achieve the total energy required for the treatment while reducing the other tissue unit area on the ultrasonic sound channel. Sound intensity requirements. Since the incident angle of the ultrasonic treatment head of the present invention is much larger than the incident angle of the ultrasonic treatment head in the prior art, the surface area of the ultrasonic treatment head in contact with the human body is correspondingly increased, and the sound intensity per unit area is small, basically not Injure the patient.

Another technical solution to solve the technical problem of the present invention is that the shape of the ultrasonic treatment head in contact with the human body coincides with the shape of the body surface corresponding to the human body.

The surface area of the ultrasonic treatment head provided by the present invention is greater than the surface area of the existing ultrasonic treatment head when the shape of the ultrasonic treatment head is in contact with the surface of the patient's body surface. Double, thus increasing the surface area of the skin penetrated by the ultrasound surface of the patient, and under the premise of ensuring the ultrasonic energy required for treatment, the sound intensity of other tissues on the acoustic channel per unit area is also reduced, and other tissues on the acoustic channel are damaged. The possibility is reduced.

Preferably, the surface area of the ultrasonic treatment head in contact with the human body ranges from 30,000 to 35,000 square millimeters.

The ultrasonic treatment head is in contact with the human body as a spherical surface, and an incident angle may be in the range of 90 ° - 110 °, and another incident angle α may range from 50 ° to 65 °.

An ultrasonic treatment system comprising the above ultrasonic treatment head.

Preferably, the center of the ultrasonic treatment head has a monitoring device, and the monitoring device uses a Β super probe.

Since the lesion is usually located in the vicinity of the patient's ribs, and the surface of the skin of the different patients is different, the ultrasonic treatment heads having different curvatures can be selected for different patients. Therefore, the appropriate ultrasonic incident angle is selected, which effectively reduces the sound intensity per unit area within the acoustic channel and reduces the possibility of damage to other organs in the human body.

Therefore, the ultrasonic treatment head of the present invention presupposes the ultrasonic energy required for treatment The sound intensity of other tissues on the acoustic channel per unit area is also reduced, and the possibility of damage to other tissues on the acoustic channel is reduced.

The ultrasonic treatment system provided by the invention has the shape of the ultrasonic treatment head in contact with the patient's body surface and the shape of the patient's corresponding body surface, so that the patient can better locate and detect the liver tumor treatment. , monitoring treatment. DRAWINGS

Figure 1 is a schematic view showing the structure of an ultrasonic treatment system in the prior art.

Figure 2 is a top view of Figure 1.

3 is a schematic structural view of an ultrasonic treatment system when the ultrasonic treatment head is spherical in the embodiment 1 of the present invention;

Figure 4 is a top view of Figure 3.

5 is a schematic view showing an incident angle of an ultrasonic treatment head when it is incident according to Embodiment 1 of the present invention. FIG. 6 is a schematic view showing the structure of an ultrasonic treatment system when the ultrasonic treatment head is a spherical surface according to Embodiment 2 of the present invention.

Figure 7 is a top view of Figure 6.

In the figure: 1 ultrasonic treatment head 2 - monitoring device 3 - patient's body surface skin 4 a lesion 5 - transmission medium 6 - connecting part 7 - motion positioning device θ, α - incident angle

The present invention will be further described in detail below with reference to the embodiments and the accompanying drawings.

As shown in Figures 3, 4, 6, and 7, the ultrasonic treatment system of the present invention comprises an ultrasonic treatment head 1, a monitoring device 2, and a motion positioning mechanism 7 for moving the ultrasonic treatment head 1, a motion positioning mechanism 7 and an ultrasonic treatment head. 1 is connected together by a connecting member 6. The monitoring device can be a helium super probe. The ultrasonic treatment head 1 is in contact with the skin 3 of the patient's body surface through the transmission medium 5.

The shape of the ultrasonic treatment head 1 in contact with the human body coincides with the shape of the body surface corresponding to the human body. It should be noted that the shape of the surface of the ultrasonic treatment head mentioned in the present invention is in agreement with the shape of the body surface at the contact point of the human body. When used, the ultrasonic treatment head does not need to be completely consistent with the shape of the human body surface, as long as it is basically suitable.

Among them, the surface area of the ultrasonic treatment head 1 in contact with the human body ranges from 30,000 to 35,000 square millimeters. As shown in FIG. 5, when the ultrasonic treatment head is spherical with the human body, it is adapted to the body surface of the human body, and the spherical angle of the incident angle α and α in the X-axis and the Y-axis are not Similarly, an angle of incidence Θ can range from 90 ° to 110 °, and another angle of incidence α can range from 50 ° to 65 °.

The following are non-limiting examples of the invention:

Example 1

As shown in FIGS. 3 and 4, the ultrasonic treatment system of the present embodiment includes an ultrasonic treatment head 1, a monitoring device 2, and a motion positioning mechanism 7 for moving the ultrasonic treatment head 1, and the motion positioning mechanism 7 is connected to the ultrasonic treatment head 1. The parts 6 are connected together. The monitoring device 2 uses a helium super probe, and the ultrasonic treatment head 1 is in contact with the skin 3 of the patient's body through the transmission medium 5. In this embodiment, the transmission medium 5 is deaerated water.

In this embodiment, the shape of the contact portion of the ultrasonic treatment head 1 with the human body coincides with the shape of the body surface corresponding to the human body (ie, the skin surface 3 of the patient's body surface), and since the lesion 4 is the rib region of the patient, in this embodiment, the ultrasonic treatment The shape of the head 1 in contact with the human body is a spherical surface, the incident angle Θ of the spherical surface is 105 °, the other incident angle ct is 60 °, and the surface area of the spherical surface is about 34,000 square millimeters.

When using the ultrasonic treatment system of the present invention, the patient's body position is first fixed, and under the guidance of the monitoring device 2, the motion positioning mechanism 7 is adjusted, and the ultrasonic treatment head 1 is adjusted to be in the optimal position for firing to the lesion 4, and the ultrasonic treatment is performed. The first 1 emits ultrasonic waves to the lesion 4, so that the direction of the ultrasonic wave is along the normal direction of the skin of the patient's body surface as much as possible, avoiding other tissues that may be injured, and the ultrasonic wave passes through the transmission medium 5 to reach the lesion 4 to treat the patient, so that not only is the guarantee The total ultrasonic energy required for treatment is also minimized by the average sound intensity of other tissues on the acoustic channel.

In the prior art, the outer diameter of the ultrasonic treatment head is generally 100-150 mm, and in the present embodiment, the outer diameter of the ultrasonic treatment head is 220 mm. Obviously, the area of the acoustic channel is increased, and the total output sound power can be reduced under the same conditions. The sound intensity per unit area is improved and the safety of treatment is improved. Example 2:

As shown in FIGS. 6 and 7, in the present embodiment, the position of the lesion 4 of the other patient is different from that of the first embodiment, and the ultrasonic treatment head 1 still adopts a spherical surface that matches the shape of the body surface at the contact with the human body, and the spherical surface One incident angle Θ is 110 °, the other incident angle α is 65°, and the surface area is about 35000 mm 2 . The shape of the ultrasonic treatment head 1 in contact with the skin surface of the patient's body surface is consistent with the shape of the skin 3 of the patient's body surface. .

The other components and functions of the embodiment are the same as those of the embodiment 1, and are not described herein again.

Claims

Claim

An ultrasonic treatment head characterized in that the surface area of the ultrasonic treatment head in contact with the human body ranges from 30,000 to 35,000 square millimeters.

2. The ultrasonic treatment head according to claim 1, wherein the shape of the ultrasonic treatment head in contact with the human body coincides with the shape of the body surface corresponding to the human body.

3. The ultrasonic treatment head according to claim 2, wherein the ultrasonic treatment head is in contact with the human body as a spherical surface, and an incident angle Θ ranges from 90 ° to 110 °, and another incident angle α The range is from 50 ° to 65 °.

An ultrasonic treatment head characterized in that the shape of the ultrasonic treatment head in contact with the human body coincides with the shape of the body surface corresponding to the human body.

The ultrasonic treatment head according to claim 4, wherein the surface area of the ultrasonic treatment head in contact with the human body ranges from 30,000 to 35,000 square millimeters.

The ultrasonic treatment head according to claim 5, wherein the ultrasonic treatment head is in contact with the human body as a spherical surface, and an incident angle Θ ranges from 90 ° to 110 °, and another incident angle α The range is from 50 ° to 65. .

An ultrasonic treatment system comprising the ultrasonic treatment head according to any one of claims 1 to 6.

8. The ultrasonic treatment system according to claim 7, wherein the ultrasonic treatment head has a monitoring device at the center, and the monitoring device uses a helium super probe.