CN101822873A - Line focusing ultrasonic therapy probe - Google Patents

Abstract

The invention discloses a line focusing ultrasonic therapy probe in the technical field of medicinal therapy. The line focusing ultrasonic therapy probe comprises a shell, a therapeutic window, an ultrasonic transducer and a catheter, wherein the ultrasonic transducer is fixed inside the shell, the top of the shell is spherical, the bottom of the shell is provided with the catheter, the therapeutic window is arranged on the lateral surface of the shell, two ends of the ultrasonic transducer are fixed on the therapeutic window, and the catheter is connected with the ultrasonic transducer. The line focusing ultrasonic therapy probe is technically improved based on the traditional ultrasonic therapy probe, the ultrasonic is focused on the lateral surface of the probe to form a linear shape, the focusing area is oblong, the ultrasonic energy is comparatively dispersed, and the probe has large scanning range and little injury to a mucous membrane. The probe has short diameter and length, and an air bag is wrapped outside the probe so as to furthest reduce the injury to the inner wall of the nasal cavity.

Description

Line Focused Ultrasound Therapy Probe

technical field

The invention relates to a device in the field of medical technology, in particular to a line-focused ultrasonic therapy probe.

Background technique

Focused ultrasound is mainly used in tumor treatment in the medical field. Its principle is to form a focal area with extremely high sound intensity (several kw-10kw/cm ² ) in the target tissue through a certain focusing method. A large amount of energy is deposited in the focal area, so that the temperature of the tissue located in it reaches above 65°C in a few seconds, resulting in instantaneous coagulation necrosis of the tissue, while the tissue outside the focal area has only a small amount of energy deposition, so it is basically not damaged , and finally achieve the purpose of targeted therapy for tumors.

Allergic rhinitis is a common chronic disease, and its global incidence rate has reached 15% to 20%. Allergic rhinitis is an allergic disease that occurs in the nasal mucosa, which seriously affects the quality of life of patients and is more likely to be accompanied by Inflammation of adjacent organs. Since the pathogenesis of allergic rhinitis is unclear, it is impossible to prescribe the right medicine, so the effect of medicine on allergic rhinitis is not good. At present, the effective treatment method recognized at home and abroad is to thin the inferior turbinate area to reduce allergy. The commonly used treatment methods are surgical treatment and ablation therapy. The treatment area of surgery and ablation is in the inferior turbinate area, and it is required to remove part of the submucosal tissue without damaging the nasal mucosa. Surgical treatment usually causes greater damage to the nasal mucosa, which may cause sequelae. Ablation therapy includes radiofrequency, laser, plasma. Focused ultrasound can not only cause submucosa tissue necrosis, destroy local immune cells, reduce the release of cytokines and inflammatory mediators, reduce nerve excitability by destroying submucosa nerve cells, and relieve rhinitis symptoms, but also cause almost no damage to the nasal mucosa. At present, a few domestic clinical studies have shown that focused ultrasound has a good effect on the treatment of allergic rhinitis. The space in the nasal cavity is narrow and the treatment site is special. Traditional focused ultrasound probes cannot meet the requirements. A new type of line focused ultrasound treatment probe is needed.

After searching the prior art, it is found that Chinese invention patent publication number: CN101141996, name: intracavity probe for treatment including an image transducer integrated in the ultrasonic transducer for treatment, the probe includes: a support formed with a catheter A body, a catheter extending from a mounting head for at least one therapeutic transducer component having an effective surface area for emitting focused ultrasound and comprising a spherical front face having a total surface area. The main body of the probe is a spherical self-focusing transducer part with a diameter between 33 mm and 40 mm. Compared with the present invention, the probe is also used for intracavitary treatment, but its volume is much larger, and the focused ultrasound generated is in the form of points , the intensity is greater, and the energy is not easy to control during treatment, so it is not suitable for treating diseases in narrow cavities.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a line-focused ultrasonic treatment probe, which has been technically improved on the basis of the traditional ultrasonic treatment probe. The ultrasound is focused into a line on the side of the probe, and the focal area is a rectangle. Ultrasonic energy is scattered, the scanning range is large and the damage to the mucosa is small.

The present invention is achieved through the following technical solutions, the present invention includes: a shell, a treatment window, an ultrasonic transducer and a catheter, wherein: the ultrasonic transducer is fixed inside the shell, the top of the shell is a spherical surface, and the bottom of the shell is provided with a sleeve The treatment window is arranged on the side of the shell, the two ends of the ultrasonic transducer are fixed on the treatment window, and the catheter is connected with the ultrasonic transducer.

The ultrasonic transducer is made of piezoelectric ceramics with a length of 4-6 mm. The section of the ultrasonic transducer is arc-shaped with a radius of 4-6 mm and a radian of 60° to 90°. The arc of the ultrasonic transducer is The two ends of the shape are fixedly connected to the treatment window, and the focal depth is 3-5 mm outside the treatment window.

The treatment window is a rectangle whose size is the same as that of the ultrasonic transducer.

The shell is a cylinder, and the top of the shell is spherical, and the shell is covered with airbags except the treatment window.

The casing is provided with a water inlet pipe, a water outlet pipe and a cable, the cable is connected with the ultrasonic transducer, and the water inlet pipe and the water outlet pipe are cast on the bottom of the shell.

The diameters of the water inlet pipe and the water outlet pipe are less than 2mm and are made of metal.

The shell is made of stainless steel, and the size is less than 8mm*8mm*8mm.

The shell is covered with a biocompatible film.

When the present invention works, the probe is extended to the inferior turbinate region of the nose, the treatment window is close to the inferior turbinate, the focused ultrasound is focused on the submucosal 3-5mm region, and the probe is pushed forward to complete the scanning of the inferior turbinate region. The scanning area is rectangular, the width is the width of the ultrasonic transducer, and the length is the distance the probe is advanced.

Compared with the prior art, the present invention has the following advantages: the present invention has made technical improvements on the basis of the traditional ultrasonic treatment probe, the ultrasonic is focused into a line on the side of the probe, the focal area is a rectangle, the ultrasonic energy is dispersed, and the scanning range is large And less damage to the mucosa. The diameter and length of the probe are small and the outsourcing air bag reduces the damage to the inner wall of the nasal cavity to the greatest extent.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic cross-sectional view of the present invention;

Fig. 3 is a schematic structural diagram of an ultrasonic transducer.

Detailed ways

The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

As shown in Figure 1, the present embodiment includes: a casing 1, a treatment window 2, an ultrasonic transducer 3, a sleeve 4 and an endoscope 5, wherein: the ultrasonic transducer 3 is fixed inside the casing 1, and the casing 1 The top is spherical, the bottom of the shell 1 is provided with a sleeve 4 , the treatment window 2 is set on the side of the shell 1 , the sleeve 4 is connected with the ultrasonic transducer 3 , and the endoscope 5 is placed beside the sleeve 4 .

The ultrasonic transducer 3 is fixed in the casing 1 through a bracket 6 .

The ultrasonic transducer 3 is made of piezoelectric ceramics with a length of 4-6mm. The two ends of the arc are in contact with the treatment window 2, and the focal depth is 3-5 mm outside the treatment window 2.

The size of the treatment window 2 is the same as that of the ultrasonic transducer 3, the length of the treatment window 2 is equal to the chord length of the ultrasonic transducer 3, the width is equal to the width of the ultrasonic transducer 3, and the ultrasound can be focused on the side of the probe In a linear shape, the focal area is a rectangle. The treatment window 2 is sealed with a biocompatible film, which facilitates the penetration of ultrasonic waves and ensures that circulating water will not flow out during treatment.

The shell 1 is a cylinder, and the top of the shell 1 is a spherical surface. The shell 1 is covered with an airbag 7 except for the treatment window 2, so as to reduce the damage to the tissues in the nasal cavity when the probe moves in the nasal cavity.

The casing 4 is provided with a water inlet pipe 8 , a water outlet pipe 9 and a cable 10 , the cable 10 is connected to the ultrasonic transducer 3 , and the water inlet pipe 8 and the water outlet pipe 9 are cast on the bottom of the casing 1 . The diameter of the water inlet pipe and the water outlet pipe is less than 2mm and is made of metal.

The shell is made of stainless steel, and the size is less than 8mm*8mm*8mm.

The outside of the shell 1 is covered with a biocompatible film to ensure that the entire probe is watertight.

Claims (8)

1. A line-focused ultrasonic therapy probe, comprising: a shell, a treatment window, an ultrasonic transducer and a catheter, characterized in that: the section of the ultrasonic transducer is arc-shaped, with a radius of 4 to 6mm and a radian of 60° °～90°, the arc-shaped ends of the ultrasonic transducer are fixedly connected with the treatment window, the focus depth is 3～5mm outside the treatment window, the ultrasonic transducer is fixed inside the shell, the top of the shell is spherical, and the bottom of the shell is equipped with The cannula and the treatment window are arranged on the side of the shell, the two ends of the ultrasonic transducer are fixed on the treatment window, and the catheter is connected with the ultrasonic transducer. 2. The probe for line-focused ultrasonic therapy according to claim 1, wherein the ultrasonic transducer is made of piezoelectric ceramics and has a length of 4-6 mm. 3 . The line-focused ultrasonic therapeutic probe according to claim 1 , wherein the therapeutic window is rectangular, the length is equal to the chord length of the ultrasonic transducer, and the width is equal to the width of the ultrasonic transducer. 4 . 4. The line-focused ultrasound therapy probe according to claim 1, wherein the shell is a cylinder, the top of the shell is spherical, and the shell is covered with airbags except for the treatment window. 5. The line-focused ultrasonic therapeutic probe according to claim 1, characterized in that, the casing is provided with a water inlet pipe, a water outlet pipe and a cable, the cable is connected to the ultrasonic transducer, and the water inlet pipe and the water outlet pipe are cast in the casing bottom of. 6. The line-focused ultrasound therapy probe according to claim 5, wherein the diameters of the water inlet pipe and the water outlet pipe are less than 2mm. 7. The line-focused ultrasonic therapy probe according to claim 1 or 4, characterized in that the size of the shell is smaller than 8mm*8mm*8mm. 8. The line-focused ultrasound therapy probe according to claim 7, wherein the outer casing is covered with a biocompatible film.

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