Percutaneous built-in needle type ultrasonic probe
By designing a percutaneous needle-type ultrasound probe, the problems of limited ultrasound transmission and insufficient tissue resolution in the prior art are solved, and high-resolution ultrasound imaging and accurate interventional treatment are achieved, which are suitable for the diagnosis and treatment of deep lesions.
Patent Information
- Application Number
- CN202411814524.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-12-29
- Filing Date
- 2024-12-10
- Publication Date
- 2025-03-14
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing percutaneous ultrasound diagnosis technology cannot close the contact with the deep lesion location. Ultrasound transmission is disturbed by soft tissue thickness, diversified tissue composition, and gas and bones, resulting in significant attenuation of acoustic signal transmission, especially for deep abdominal and pelvic diseases, which becomes limited in imaging resolution and insufficient tissue resolution, making it difficult to accurately judge the relationship between the lesion boundaries and puncture points and the lesion during the intervention process, increasing the risk of accidental injury and the possibility of delaying treatment.
A percutaneously inserted needle-type ultrasonic probe is designed with a needle-shaped appearance that can percutaneously puncture into tissue, close to or directly enter the inside of the tumor, and contact the tissue at zero distance. The ultrasonic component is driven to rotate at multiple angles through the rotating mechanism to generate high-resolution 2D and 3D images, achieving accurate diagnosis and interventional treatment.
Ultrasound imaging with high resolution (tissue resolution up to 0.1mm or higher) is achieved, and it gets rid of motor displacement interference and provides accurate diagnostic and interventional treatment plans, suitable for precise treatment surgeries such as tumor ablation, drug delivery and energy delivery.
Smart Images
Figure CN119606428A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of ultrasound technology, and in particular to a percutaneously inserted needle-type ultrasound probe. Background Art
[0002] Transcutaneous ultrasound diagnosis cannot get close to the lesion. The tissue structure components in the ultrasound transmission and interventional surgery path are complex. The sound waves are interfered by the thickness of soft tissues, the diversity of tissue components, the gas in the chest and abdominal cavity, and the bones. The transmission of the acoustic signal is significantly attenuated, especially for lesions located deep in the abdomen and pelvis. The imaging resolution is more limited. The low-frequency (1.5-5MHz) probe commonly used for deep tissue imaging has a large imaging range and imaging depth (>10cm), but its tissue resolution is only about 1mm.
[0003] Insufficient tissue resolution causes physicians to face the following problems during intervention: it is difficult to accurately judge the boundaries of lesions, and the relationship between the puncture point and the lesion and surrounding tissues is difficult, resulting in false negative sampling of small visceral tumors, delaying the best time for early diagnosis and treatment of tumors; the ablation thermal field does not cover the tumor properly, excessive tumor inactivation also causes damage to surrounding tissues and blood vessels, and insufficient thermal field coverage leads to incomplete ablation of malignant tissues and residues; punctures can easily injure important structures such as blood vessels, bile ducts, and intestines, resulting in serious complications. More importantly, due to the significant attenuation of sound waves from gas, bones, etc., ultrasound has lost the opportunity to intervene in the diagnosis and treatment of such lesions and needs to rely on CT guidance.
[0004] At present, the method of percutaneous ultrasound-guided interventional diagnosis and treatment routinely uses two-dimensional ultrasound. Taking tumor ablation treatment as an example, the determination of the exact boundary of the tumor in three-dimensional space and the ablation zone mainly uses multimodal image fusion or pre- and post-operative matching of tomographic two-dimensional images. However, due to the influence of organ deformation and respiratory displacement, internal organs are characterized by flexibility. The precise registration between the same image before and after the organ operation, and between ultrasound and CT and magnetic resonance images of different modalities, all face the challenge of significant deformation, resulting in significant errors. At the same time, the tissue path passed by percutaneous ultrasound-guided intervention is relatively long. During the operation, physiological activities such as breathing and swallowing will cause significant displacement of organs and lesions, making it impossible to achieve accurate diagnosis and interventional treatment. Summary of the invention
[0005] In view of this, the present application proposes a percutaneously inserted needle-type ultrasound probe, which can solve the above-mentioned existing technical problems. The present application provides the following technical solutions:
[0006] A percutaneously inserted needle-type ultrasound probe comprises: a handle; an outer sleeve, the front end of the outer sleeve forming a puncture tip, an ultrasound window being provided at a side position of the outer sleeve close to the puncture tip, the outer sleeve having a first cavity arranged along an axial direction; a rotating shaft, the rotating shaft being arranged in the first cavity; an ultrasound component, the ultrasound component being arranged at the front end of the rotating shaft and corresponding to the position of the ultrasound window when being arranged in the first cavity, and a rotating mechanism, the rotating mechanism being used to drive the rotating shaft to rotate, thereby driving the ultrasound component to rotate, wherein the rotating mechanism is arranged in the handle.
[0007] According to the percutaneously insertable needle-type ultrasound probe of the exemplary embodiment of the present application, the rotating mechanism includes a motor, a motor gear coaxial with the motor, and a transmission gear meshing with the motor gear. The motor drives the motor gear to rotate, and one end of the transmission gear serves as the output end of the rotating mechanism to drive the rotating shaft to rotate.
[0008] According to the percutaneously implantable needle-type ultrasound probe of the exemplary embodiment of the present application, the ultrasound window is covered with a sound-transmitting membrane.
[0009] According to the percutaneously implantable needle-type ultrasound probe of the exemplary embodiment of the present application, the coverage range of the acoustically transparent membrane matches the rotational scanning range of the ultrasound component.
[0010] According to the percutaneously implantable needle-type ultrasound probe of an exemplary embodiment of the present application, the rotation scanning range of the ultrasound component is 0°-180°.
[0011] According to the example embodiment of the present application, the percutaneously implantable needle-type ultrasound probe further includes two bearings, which are respectively arranged at two ends of the ultrasound component, and the outer walls of the two bearings are in contact with the inner wall of the outer sleeve.
[0012] According to the percutaneously implantable needle ultrasound probe of the exemplary embodiment of the present application, the bearing is a sliding bearing.
[0013] According to the percutaneously implantable needle-type ultrasound probe of the exemplary embodiment of the present application, the ultrasound component, the bearing, and the outer sleeve form a receiving space, and the receiving space is filled with dielectric oil.
[0014] According to the percutaneously implantable needle-type ultrasound probe of the exemplary embodiment of the present application, the rotating shaft has a second cavity arranged along the axial direction, and an ultrasound wire is arranged in the second cavity, and the ultrasound wire is connected to the ultrasound component.
[0015] According to the percutaneously insertable needle-type ultrasound probe of the exemplary embodiment of the present application, the outer sleeve and the handle are fixed by glue spotting or tight fitting.
[0016] According to the example implementation of the present application, the percutaneously inserted needle-type ultrasound probe can directly penetrate into the tissue through the skin due to its needle-shaped appearance, close to or directly into the tumor tissue, and can be in zero-distance contact with the treated tissue. The obtained ultrasound image has no relative displacement, can get rid of the interference of motion displacement, and finally obtain a high-resolution ultrasound image (tissue resolution reaches 0.1mm or higher). The percutaneously inserted needle-type ultrasound probe can also rotate at multiple angles to generate two-dimensional and real-time three-dimensional stereoscopic imaging, provide accurate diagnosis and interventional treatment needle arrangement plans, and can provide accurate ultrasound guidance for diagnosis and interventional treatment, which is suitable for implementing tumor ablation, drug delivery, energy delivery and other precision treatment operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 is a three-dimensional schematic diagram of a percutaneously insertable needle-type ultrasound probe according to an exemplary embodiment of the present application;
[0019] Figure 2 is a top view schematic diagram of a percutaneously insertable needle-type ultrasound probe according to an exemplary embodiment of the present application;
[0020] Figure 3 yes Figure 2 Schematic diagram of the section at position AA;
[0021] Figure 4 yes Figure 3 A partial enlarged schematic diagram of
[0022] Figure 5 is a three-dimensional schematic diagram of some components of a percutaneously insertable needle-type ultrasound probe according to an exemplary embodiment of the present application;
[0023] Figure 6 yes Figure 5 A partial enlarged schematic diagram of
[0024] Figure 7 Schematic diagram of a cross-section of an outer sleeve of a percutaneously insertable needle ultrasound probe according to an exemplary embodiment of the present application.
[0025] In the figure:
[0026] Handle 1; outer sleeve 2; puncture tip 21; ultrasonic window 22; first cavity 23; sound-transmitting membrane 24; rotating shaft 3; second cavity 31; ultrasonic guide wire 32; ultrasonic component 4; rotating mechanism 5; motor 51; motor gear 52; transmission gear 53; bearing 6. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0028] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms such as "installation" 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 a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0029] The present application proposes a percutaneously implantable needle-type ultrasound probe, which is inserted into body tissue or tumor through percutaneous puncture. The probe is in zero-distance contact with the tissue. The probe scans inside the tissue or tumor to generate 2D and 3D images, and plans and guides the interventional surgery path and ablation range in real time, so as to achieve the purpose of accurate diagnosis and treatment.
[0030] like Figures 1 to 6 As shown, the percutaneously insertable needle-type ultrasound probe of the exemplary embodiment of the present application mainly includes: a handle 1, an outer sleeve 2, a rotating shaft 3, an ultrasound component 4 and a rotating mechanism 5.
[0031] The outer sleeve 2 is needle-shaped in appearance, with a diameter of 2 mm to 4 mm. Figure 3 The outer sleeve 2 is fixed at the position B in the figure by glue point fixation or tight fit fixation to form a rigid connection, which has the advantages of being stable, reliable and not easy to fall off. The front end of the outer sleeve 2 forms a puncture tip 21, which is used to implement the percutaneous puncture operation of the percutaneous insertion needle type ultrasonic probe. An ultrasonic window 22 is provided at the side position of the outer sleeve 2 near the puncture tip 21, and the ultrasonic window 22 is used to transmit ultrasonic waves, and is a window set for the internal ultrasonic component. The outer sleeve 2 has a first cavity 23 set along the axial direction.
[0032] like Figure 3 and Figure 4As shown, the rotating shaft 3 is placed in the first cavity 23, and the rotating shaft 3 has a second cavity 31 arranged along the axial direction. The second cavity 31 has an ultrasonic wire 32, and the ultrasonic wire 32 is connected to the ultrasonic component 4. The ultrasonic wire 32 is arranged inside the rotating shaft 3. The design of the hidden wire avoids the problem of the ultrasonic wire 3 being entangled and twisted on the surface of the rotating shaft 3 when the rotating shaft 3 drives the ultrasonic component 4 to rotate, thereby improving the stability of the working process and extending the service life of the product.
[0033] The ultrasonic component 4 is arranged at the front end of the rotating shaft 3, and corresponds to the position of the ultrasonic window 22 when placed in the first cavity 23. The ultrasonic component 4 mainly includes an ultrasonic transducer, which is used to emit ultrasonic waves and convert the received reflected ultrasonic waves into signal output.
[0034] The rotating mechanism 5 is arranged in the handle 1, and is used to drive the rotating shaft 3 to rotate, thereby driving the ultrasonic component 4 to rotate, so as to realize ultrasonic scanning at different angles, thereby realizing three-dimensional imaging. The rotating mechanism 5 includes a motor 51, a motor gear 52 and a transmission gear 53 connected in sequence. The motor gear 52 is coaxial with the motor 51, and one end of the transmission gear 53 is meshed with the motor gear 52. The other end of the transmission gear 53 serves as the output end of the rotating mechanism 5, driving the rotating shaft 3 to rotate. The ultrasonic component 4 is driven to swing and scan by the rotating mechanism 5, and a precise 3D image of the tissue can be synthesized with the data processing software.
[0035] In order to prevent subcutaneous tissue such as blood and cell agglomerates from entering the first cavity 23 of the outer sleeve 2, the ultrasound window 22 is covered with a sound-transmitting membrane 24. The sound-transmitting membrane 24 isolates substances for protection and allows ultrasound to penetrate without affecting the ultrasound function.
[0036] The sound-permeable membrane 24 covers a range (see Figure 7 The rotation scanning range of the ultrasonic component 4 is matched with the rotation scanning range of the ultrasonic component 4. The rotation scanning range of the ultrasonic component 4 is 0°-180°. If the rotation scanning range is too small, multi-angle ultrasonic detection cannot be provided; if the rotation scanning range is too large, it means that the range of the sound-transmitting membrane 24 is too large, which means that the ultrasonic window 22 of the side opening of the outer sleeve 2 is too large, the mechanical strength is insufficient, and it is easy to be damaged during the puncture operation.
[0037] The percutaneously inserted needle-type ultrasound probe of the exemplary embodiment of the present application further includes two bearings 6. The two bearings 6 are respectively disposed at both ends of the ultrasound assembly 4, and the outer walls of the two bearings 6 are in contact with the inner wall of the outer sleeve 2. The bearings 6 can effectively support the rotating shaft 4 and transmit torque, while reducing friction and wear, ensuring the normal operation of the machine and extending its service life.
[0038] Since the inner diameter of the outer sleeve 2 is very small, a sliding bearing is preferably used as the bearing 6. The sliding bearing of this size range has a lower cost than a rolling bearing.
[0039] The ultrasonic assembly 4, the bearing 6 and the outer sleeve 2 form a receiving space (refer to Figure 4 The receiving space is sealed and filled with dielectric oil. The dielectric oil can lubricate, cool and transmit ultrasound waves, which helps to improve the quality of ultrasound images and extend the service life of ultrasound components.
[0040] The percutaneously inserted needle-type ultrasound probe of the example implementation of the present application, due to its needle-shaped appearance, can directly percutaneously puncture into the tissue, approach or directly enter the tumor tissue, and can be in zero-distance contact with the diagnosed tissue. The obtained ultrasound image has no relative displacement, can get rid of the interference of motion displacement, and finally obtain a high-resolution ultrasound image (tissue resolution reaches 0.1mm or higher). The percutaneously inserted needle-type ultrasound probe can also rotate at multiple angles to generate two-dimensional and real-time three-dimensional stereoscopic imaging, provide accurate diagnosis and interventional treatment needle arrangement plans, and can provide accurate ultrasound guidance for diagnosis and interventional treatment, and is suitable for implementing tumor ablation, drug delivery, energy delivery and other precision treatment operations.
[0041] The above specific implementations do not constitute a limitation on the protection scope of this application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included in the protection scope of this application.
Claims
1. A percutaneously implantable needle-type ultrasound probe, characterized in that: include: handle; An outer sleeve, wherein the front end of the outer sleeve forms a puncture tip, an ultrasonic window is provided at a side position of the outer sleeve close to the puncture tip, and the outer sleeve has a first cavity arranged along the axial direction; a rotating shaft, wherein the rotating shaft is disposed in the first cavity; an ultrasonic component, which is disposed at the front end of the rotating shaft and corresponds to the position of the ultrasonic window when the ultrasonic component is placed in the first cavity, and A rotating mechanism, the rotating mechanism is used to drive the rotating shaft to rotate, thereby driving the ultrasonic component to rotate, Wherein, the rotating mechanism is arranged in the handle.
2. The percutaneously insertable needle-type ultrasound probe according to claim 1, characterized in that: The rotating mechanism comprises a motor, a motor gear coaxial with the motor and a transmission gear meshing with the motor gear. The motor drives the motor gear to rotate, and one end of the transmission gear serves as an output end of the rotating mechanism to drive the rotating shaft to rotate.
3. The percutaneously insertable needle-type ultrasound probe according to claim 1, characterized in that: The ultrasound window is covered with a sound-transmitting membrane.
4. The percutaneously insertable needle-type ultrasound probe according to claim 3, characterized in that: The coverage range of the sound-transmitting membrane matches the rotational scanning range of the ultrasonic component.
5. The percutaneously insertable needle-type ultrasound probe according to claim 4, characterized in that: The rotation scanning range of the ultrasonic component is 0°-180°.
6. The percutaneously insertable needle-type ultrasound probe according to claim 1, characterized in that: It also includes two bearings, which are respectively arranged at two ends of the ultrasonic component, and the outer walls of the two bearings are in contact with the inner wall of the outer sleeve.
7. The percutaneously insertable needle-type ultrasound probe according to claim 6, characterized in that: The bearing is a sliding bearing.
8. The percutaneously insertable needle-type ultrasound probe according to claim 6, characterized in that: The ultrasonic component, the bearing and the outer sleeve form a containing space, and the containing space is filled with medium oil.
9. The percutaneously insertable needle-type ultrasound probe according to claim 1, characterized in that: The rotating shaft has a second cavity arranged along the axial direction, and an ultrasonic wire is arranged in the second cavity. The ultrasonic wire is connected to the ultrasonic component.
10. The percutaneously insertable needle-type ultrasound probe according to claim 1, characterized in that: The outer sleeve and the handle are fixed by glue spotting or tight fitting.