WO2008031303A1 - Dispositif thérapeutique de serrage automatique à ultrasons - Google Patents

Dispositif thérapeutique de serrage automatique à ultrasons Download PDF

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Publication number
WO2008031303A1
WO2008031303A1 PCT/CN2007/000541 CN2007000541W WO2008031303A1 WO 2008031303 A1 WO2008031303 A1 WO 2008031303A1 CN 2007000541 W CN2007000541 W CN 2007000541W WO 2008031303 A1 WO2008031303 A1 WO 2008031303A1
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WO
WIPO (PCT)
Prior art keywords
ultrasonic treatment
ultrasonic
rod
unit
timing pulley
Prior art date
Application number
PCT/CN2007/000541
Other languages
English (en)
French (fr)
Inventor
Xiaolin Huang
Aihua Mao
Siyuan Yan
Hai Wang
Original Assignee
Chongqing Ronghai Medical Ultrasound Industry Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Ronghai Medical Ultrasound Industry Ltd. filed Critical Chongqing Ronghai Medical Ultrasound Industry Ltd.
Publication of WO2008031303A1 publication Critical patent/WO2008031303A1/zh

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00Ultrasound therapy
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00491Surgical glue applicators
    • A61B2017/00513Tissue soldering
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28Surgical forceps
    • A61B2017/2808Clamp, e.g. towel clamp
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/320068Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B17/320092Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
    • A61B2017/320094Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw additional movable means performing clamping operation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/320068Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B17/320092Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
    • A61B2017/320095Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw with sealing or cauterizing means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00Ultrasound therapy
    • A61N2007/0078Ultrasound therapy with multiple treatment transducers

Definitions

  • the invention belongs to the technical field of medical instruments, and relates to an ultrasonic treatment device, in particular to an automatic clamping type ultrasonic treatment device. Background technique
  • High-intensity focused ultrasound therapy combines ultrasound to create high-intensity, continuous ultrasound energy on the lesion, producing transient high-temperature effects (60 °C to 10 (TC), cavitation, mechanical, and sonochemical effects).
  • TC transient high-temperature effects
  • a surgical ultrasonic device for in vivo hemostasis using high intensity focused ultrasound is provided in U.S. Patent Nos. 5,882,302, US Pat.
  • U.S. Patent No. 6,007,499, U.S. Patent 6,432,067 also provides a surgical ultrasonic device that utilizes high intensity focused ultrasound to form an anesthetic tissue region prior to surgery to prevent vascular tissue bleeding during surgical procedures.
  • the ultrasound transducer in the device produces focused ultrasound waves that are continuously transmitted to a point in the tissue of the lesion, which can then be varied by adjusting the position of the ultrasound transducer.
  • the ultrasonic devices disclosed in the above U.S. patents have some effect on the hemostasis of resecting blood vessel-rich tissues during surgery, there are certain limitations in the use of these devices: First, the operator needs to follow the surgical incision. Differently moving large ultrasonic transducers by hand at the same angle is very complicated and easy to cause misoperation. Second, when the tissue to be treated is soft and loose, the pressure exerted on the target tissue by the above device It will not be enough, so the target tissue cannot be effectively controlled. If the target tissue cannot be controlled, the ultrasonic energy will not reach the target tissue, and the expected hemostatic effect will be invalid.
  • the technical problem to be solved by the present invention is to provide an automatic clip-on ultrasonic treatment with simple structure, convenient operation, rapid coagulative necrosis of the lesion tissue during the treatment process, and preventing excessive blood loss of the patient. Device.
  • the automatic clamping type ultrasonic treatment device comprises an ultrasonic treatment head, wherein the ultrasonic treatment head adopts two oppositely disposed, and the central axes of the two ultrasonic treatment heads can be overlapped, and the two ultrasounds Either or both of the treatment heads are coupled to a motion unit that maintains the two ultrasound treatment heads during exercise.
  • the motion unit can be of any type of drive and any configuration as long as at least an operational state that maintains the central axes of the two ultrasonic treatment heads coincide.
  • the following are preferred in the present invention:
  • the utility model is characterized in that: the movement unit can adopt a hydraulically driven telescopic unit, the telescopic unit comprises a hydraulic cylinder, a retractable piston rod on the hydraulic cylinder, a hydraulic control system, a hydraulic control system is connected with the hydraulic cylinder, and the piston rod is telescopic.
  • the direction is the parallel direction of the central axis of the ultrasound treatment head, and the piston rod is connected to the ultrasound treatment head.
  • the two ultrasonic treatment heads may be respectively fixed on the two piston rods which are telescoped in opposite directions by the support unit; or one of the ultrasonic treatment heads is connected to the hydraulic cylinder through the support unit, and the other ultrasonic treatment head is connected to the piston through the support unit
  • the piston rod is a multi-stage telescopic rod that can be extended step by step.
  • a support rod which can be extended and contracted together with the piston rod can be fixed on the hydraulic cylinder, and the piston rod and the support rod are simultaneously connected to the connecting tube through the fixing member.
  • the support unit employs a connecting tube
  • the connecting tube may also have a hole for communicating with the ultrasonic treatment head to serve as a cable passage and to cool the inlet and outlet passages of the ultrasonic treatment head, respectively.
  • the cable channel therein is used to mount a cable that excites the ultrasonic transducer to emit ultrasonic waves.
  • the piston rods can be connected by an adapter sleeve which keeps the two ultrasound treatment heads parallel.
  • the adapter sleeve can be made into a Z-shape as shown in Fig. 3, so that the ultrasonic treatment head mounted thereon can bypass the height of the hydraulic cylinder, thereby achieving the purpose of reducing the distance between the two ultrasonic treatment heads.
  • a fluid container may be coupled to the support unit, and the support unit is coupled to the fluid container by a freely rotatable adapter, and the ultrasonic transducer is disposed within the fluid container.
  • the fluid container is free to rotate about the support unit so that the ultrasonic treatment head can freely rotate on the adapter.
  • the moving unit may include a multi-stage telescopic rod that can be extended step by step, a spring placed in each of the telescopic rods, a motor, and a rope wound on the output shaft of the motor, and each of the secondary telescopic rods is respectively disposed On the spring in the upper telescopic rod, the other end of the rope passes through the telescopic rods in sequence and is connected to the final telescopic rod.
  • the third type is: the moving unit adopts two structurally identical mechanical stretching units symmetrically disposed, and each mechanical stretching unit may include a first rotating rod that is rotatable about one end and fixed to the first rotating rod. a second rotating rod having one end and rotating in a direction opposite to the first rotating rod, and the two ultrasonic treatment heads are fixed on the second rotating rod of the two mechanical stretching units.
  • Each of the mechanical stretching units specifically includes a first timing pulley driven by the drive motor, a second timing pulley driven by the first timing pulley, a first rotation lever fixed to the second timing pulley, and a second a third timing pulley driven by the timing pulley, an intermediate gear fixed to the third timing pulley, a meshing gear meshing with the intermediate gear, and a second rotating rod fixed to the meshing gear, two symmetrical mechanical tensioning
  • the two first timing pulleys in the unit move in opposite directions.
  • the focal fields of the two ultrasound treatment heads are all on the same line at any opening of the treatment device, that is, the central axes of the two ultrasound treatment heads remain coincident at all times.
  • the ultrasonic energy can be accumulated, that is, the two ultrasonic treatment heads simultaneously act on the same lesion, 'enhancing the therapeutic effect, and making the thick lesion tissue during the treatment (such as The time required for coagulative necrosis of the liver and spleen is much less than that of the prior art ultrasound treatment head, which saves the cost of treatment.
  • the ultrasonic treatment head includes an ultrasonic transducer, a fluid container that can be filled with a fluid, an ultrasonic transducer placed in the fluid container, and a sound-permeable membrane fixed to the opening of the fluid container.
  • a notch in which the ultrasonic treatment guiding member (such as a B-ultrasonic probe) is mounted may be provided in the ultrasonic transducer.
  • the target tissue can be imaged to guide the ultrasound treatment.
  • the supporting unit can be a connecting tube with four holes, one of which is used for one hole.
  • the power line for the operation of the excitation ultrasonic treatment guiding member is installed, and the other three holes are respectively used as a cable passage for mounting the ultrasonic transducer to emit ultrasonic waves and a hole for cooling the inlet and outlet passages of the ultrasonic treatment head.
  • the automatic clip-on ultrasonic treatment device may further include a handle, the handle and the movement unit being fixedly coupled.
  • the ultrasonic transducer can be used with a focused or non-focused ultrasonic transducer according to the actual situation, so that the present invention can be widely applied to the treatment of other diseases such as tumors, skin diseases and the like.
  • the present invention uses a high-intensity focused ultrasound to form a coagulative necrotic area between the desired cutting area and the reserved area before performing surgery for removing avascularly rich tissue (such as the spleen, kidney, liver, etc.), thereby removing tissue such as the liver.
  • avascularly rich tissue such as the spleen, kidney, liver, etc.
  • the coagulative necrotic area can be used as the cutting area of the scalpel. Since the structure of the device of the present invention is extremely easy for the operator to perform automatic operation, by manipulating the motion unit so that the two ultrasonic treatment heads clamp the target tissue, Effectively control the target tissue, without losing too much blood during the cutting process, reducing the possibility of blood transfusion, and reducing the incidence of postoperative complications. Moreover, the two ultrasonic treatment heads of the present invention can work simultaneously, shortening the time required for coagulative necrosis of the incision, and also ensuring the hemostatic effect on the target tissue.
  • the invention also has the advantages of simple structure, low treatment cost and wide application (the ultrasonic transducer can select different specifications according to needs).
  • Embodiment 1 is a schematic structural view of Embodiment 1 of the present invention.
  • FIG. 2 is a schematic structural view of a connecting pipe in Embodiment 1 of the present invention.
  • Embodiment 2 of the present invention is a schematic structural view of Embodiment 2 of the present invention.
  • FIG. 4 is a perspective view of different sides of the treatment forceps of Figure 3.
  • FIG. 5 is a schematic structural diagram of a motion unit according to Embodiment 3 of the present invention.
  • FIG. 6 is a schematic structural diagram of a motion unit in Embodiment 4 of the present invention.
  • the present invention includes two opposing ultrasonic treatment heads and a motion unit for relatively moving the two ultrasonic treatment heads.
  • the two ultrasonic treatment heads are mounted opposite the front end of the motion unit with their axes coincident.
  • the ultrasonic treatment head comprises an ultrasonic transducer 2, a fluid container 3 which can be filled with a fluid, the ultrasonic transducer 2 is placed in the fluid container 3, and a sound-permeable membrane is fixed at the opening of the fluid container 3 (not shown) Out).
  • the ultrasound transducer 2 can be used with a focus or non-focus transducer.
  • the focused ultrasound transducer can be focused on a single circular piezoelectric ceramic wafer, or it can be a single spherical, single-arc piezoceramic wafer, or a combination of piezoelectric ceramic wafers of the same or different sizes.
  • the piezoelectric ceramic array can be driven by a single signal or by multi-channel signals in a phase-controlled manner. Focusing transducers are mainly used for intraoperative hemostasis and for treating deeper lesions in tissues such as liver tumors, bone tumors, and deep muscle tumors.
  • the non-focusing ultrasonic transducer may be a single planar piezoelectric ceramic wafer, or a piezoelectric ceramic array composed of a plurality of planar piezoelectric ceramic wafers of the same or different sizes, which may be driven by a single signal or may be The multi-channel signal is driven in phase control mode.
  • Non-focus transducers are mainly used to treat skin lesions as well as superficial lesions.
  • the ultrasonic transducer 2 can also be provided with a notch 17, in which a B can be fixed Ultrasound therapy and other guiding components are used to guide the ultrasound treatment.
  • the ultrasonic treatment head can be supported by a support unit having one end connected to the fluid container 3 and the other end connected to the motion unit via a fixture.
  • the present invention comprises a handle 1, an ultrasonic treatment head, a motion unit, and a support unit of the ultrasonic treatment head.
  • the movement unit adopts a hydraulically driven telescopic unit, which is fixed on the handle 1, and includes a hydraulic cylinder 38, a multi-stage piston rod 6 which can be stepped out on the hydraulic cylinder 38, a support rod 7, and a liquid sealing end.
  • Cover 8 hydraulic control system 15.
  • the hydraulic control system 15 communicates with the hydraulic cylinder 38 through the delivery pipes 9, 10, 11, 12, the delivery pipes 9, U deliver liquid to the upper and lower hydraulic cylinders, and the delivery pipes 10, 12 deliver the liquid in the hydraulic cylinder 38 via pressure
  • the direction of expansion and contraction of the piston rod is parallel to the central axis of the ultrasonic treatment head, and the piston rod 6 is connected to the ultrasonic treatment head.
  • the support rod 7 is fixed to the hydraulic cylinder 38 and is telescoped with the piston rod 6.
  • the ultrasonic treatment head adopts two oppositely arranged, and the axes of the two ultrasonic treatment heads coincide.
  • the ultrasonic treatment head is fixed to the multi-stage piston rod 6 of the hydraulic cylinder 38 through a support unit (ie, the connecting tube 4), the ultrasonic treatment head is connected to one end of the connecting tube 4, and the other end of the connecting tube 4 is passed through the fixing member 5 and the hydraulic cylinder.
  • the multi-stage piston rod 6 is fixedly connected, and the support rod 7 which moves with the multi-stage piston rod 6 on the hydraulic cylinder 38 is also fixedly connected to the connecting tube 4 via the fixing member 5.
  • the ultrasonic treatment head comprises a fluid container 3 which can be filled with fluid, an ultrasonic transducer 2, a sound-permeable membrane (not shown), and the fluid filled in the fluid container 3 is deaerated water.
  • the fluid is purified water.
  • Ultrasonic transducers use a focusable single-arc piezoceramic wafer. This transducer is mainly used for intraoperative hemostasis and deeper lesions in tissues.
  • the handle 1 also has two buttons 14 connected to the hydraulic control system 5 via a cable 13 for controlling the lifting and lowering of the multi-stage piston rod 6 in the hydraulic cylinder 38, thereby driving the support unit of the ultrasonic treatment head (ie, the connecting tube 4). Lifting movement.
  • the connecting tube 4 has three hole paths, and the three holes are connected with the ultrasonic treatment head, and one hole is used for installing a cable for exciting the ultrasonic transducer to emit ultrasonic waves.
  • One orifice is used as an inlet passage for the input degassed water, and one orifice serves as a return passage for the deaerated water. Therefore, the connecting tube 4 serves to support both the ultrasonic treatment head and the passage of the circuit and the water path.
  • both the inlet passage and the return passage are in communication with the fluid container 3, and the purified water in the fluid container 3 acts both as an ultrasonic coupling medium and as a coolant of the ultrasonic transducer 2, through the flow of pure water. , can quickly take away the heat generated by the ultrasonic transducer 2 during the treatment.
  • the frequency of the ultrasonic transducers 2 in the two ultrasonic treatment heads may be the same or different, and the two ultrasonic transducers 2 are respectively driven by two sets of driving mechanisms.
  • an ultrasound treatment head may be involved according to the actual situation. Treatment can also involve both ultrasound treatment heads at the same time.
  • the user When the treatment is performed by the device of the embodiment, the user operates the button 14 to control the volume of the liquid entering/discharging the hydraulic control system 15 to cause the one/two piston rods 6 to expand and contract, thereby causing the ultrasonic treatment head to move up and down.
  • the ultrasonic treatment head After the ultrasonic treatment head reaches the desired position, the target is clamped, and then the ultrasonic treatment head is driven to emit ultrasonic waves to treat the target.
  • the two ultrasonic treatment heads are always parallel, and the pure water is continuously input into the ultrasonic treatment head through the hole in the connecting tube 4, and the purified water is recovered by the return hole path, and finally a coagulation necrotic area is formed in the target body. .
  • the ultrasound is focused to form a coagulation necrotic area between the surgically-cut area and the reserved area, so that the tissue in the area is necrotic, the blood is coagulated, and the doctor uses a scalpel to remove the lesion area (for example) Excision of lesions such as the liver), no excessive blood loss during the cutting process, reducing the possibility of blood transfusion, and reducing the occurrence of postoperative complications. If treating tumors and other lesions, they eventually lose their proliferation and infiltration. And the ability to transfer.
  • Example 2 Example 2:
  • Embodiment 1 As shown in FIGS. 3 and 4, the difference between this embodiment and Embodiment 1 is that only one of the two ultrasonic treatment heads disposed oppositely is connected to the piston rod 6, and the other is fixed by the connection tube 4.
  • the piece 18 is fixed to the underside of the end cap 8 of the hydraulic cylinder.
  • the ultrasonic treatment head connected to the piston rod 6 is connected by the connecting tube 4 through the adapter sleeve 37, and the adapter sleeve 37 is formed in parallel with the central axis of the ultrasonic treatment head and in the direction of approaching the two treatment heads. Extend the shape of the distance so that the distance between the two ultrasound treatment heads can be reduced and the two ultrasound treatment heads remain parallel. At the same time, since the adapter 16 is free to rotate, the two ultrasonic treatment heads can be connected to the connecting tube 4 through the adapter 16.
  • the two ultrasonic transducers 2 are provided with a notch 17 in which a B-ultrasound probe (not shown) is fixed in the notch 17 for imaging the target body, and the ultrasonic treatment head is imaged according to the image. As a result, the target is treated.
  • the ultrasonic transducer 2 uses a piezoelectric ceramic array composed of a plurality of piezoelectric ceramic wafers of the same or different sizes, and the array is driven by a multi-channel signal driven in a phase control manner.
  • the ultrasonic transducer 9 can be excited according to the actual condition of the depth of the lesion, so that the focus is more precise and the energy is more suitable.
  • the motion unit in this embodiment adopts a motor-driven multi-stage spring structure.
  • the motion unit includes a multi-stage telescopic rod that can be extended step by step, a spring 19 placed in each stage of the telescopic rod, a motor 20, and a cord 22.
  • the multi-stage telescopic rod adopts three stages, namely, a first-stage telescopic rod 21, a second-stage telescopic rod 39, and a final-stage telescopic rod 40.
  • Each of the secondary telescopic rods is placed on a spring 19 in the upper telescopic rod.
  • the first stage telescopic rod 21 is placed on the spring 19 in the support sleeve 41
  • the second stage extension rod 39 is placed on the spring in the first stage telescopic rod 21
  • the last stage extension rod 40 is placed in the spring in the secondary extension rod 39. on.
  • the rope 22 is wound around the output shaft of the motor 20, and the other end is connected to the final stage telescopic rod 40 after passing through the stages of the telescopic rods.
  • the final stage telescopic rod 40 is connected to the ultrasonic treatment head through a connecting tube 4.
  • the rope 22 When the motor 20 rotates, the rope 22 is driven to move up and down under the tension of the spring 19, and the multi-stage support rod is driven to move up and down.
  • the fixing member 5 is connected to the multi-stage support rod, thereby driving the support unit (i.e., the connecting tube 4) of the ultrasonic treatment head for lifting movement.
  • the motion unit adopts two mechanically aligning units of the same structural size that are symmetrically disposed.
  • the symmetrically disposed right side mechanical stretching unit includes a gear 25 driven by a drive motor 23, a first timing pulley 24 coupled to the gear 25, a front support rod 26, and a first
  • the timing pulley 24 drives the second timing pulley 33 driven by the first timing belt 27, the first rotation lever 34, the third timing pulley 36 driven by the second timing belt 33 through the second timing belt 29, and the third An intermediate gear 35 to which the timing pulley 36 is fixed, an meshing gear 31 that meshes with the intermediate gear 35, and a second rotating lever 32.
  • a pin 28 is fixed to the second timing pulley 33.
  • One end of the first rotating lever 34 is coupled to the pin 28 for rotation therewith, and the pin gear 30 is fixed to the meshing gear 31.
  • the second rotating lever 32 is coupled to the pin 30 for rotation therewith.
  • Two oppositely disposed ultrasonic treatment heads are respectively coupled to the front end portion of the second rotating rod 32.
  • the output gear of the drive motor 23 meshes with the transition gear 42, and the transition gear 42 meshes with the gear 43, and the rest of the structure is the same as the mechanical tensioning unit on the right side.
  • the combined motion of the first rotating lever 34 and the second rotating lever 32 forms a relative motion of the two ultrasonic treatment heads.
  • the front support rod 26 mainly serves as a support, and the relative movement of the ultrasonic treatment head is achieved by the rotation of the second rotating rod 32 and the first rotating rod 34.
  • the mechanical stretching unit is driven in the following manner: When the driving motor 23 rotates, the mechanical stretching units of the left and right sides are respectively driven to simultaneously move. In the left mechanical tensioning unit, the gear 25 meshes with the over gear 42 and the excessive gear 42 drives the gear 43 to rotate. In the right mechanical tensioning unit, the gear 25 directly meshes with the output gear of the drive motor 23, thus making the left and right The two gears 25, 43 disposed opposite each other are rotated in opposite directions.
  • the two second timing pulleys 33 are driven to rotate, and the second timing pulley 33 is coupled with the pin 28, so that when the second timing pulley 33 rotates, the first rotation lever 34 rotates around the pin 28; meanwhile, the second timing belt
  • the wheel 33 drives the third timing pulley 36 to move, the third timing pulley 36 drives the intermediate gear 35 to rotate, the intermediate gear 35 drives the meshing gear 31 to rotate, and the meshing gear 31 is fixed with the pin 30, and the second rotating rod 32 and the pin
  • the 30 is fixed together, so that when the meshing gear 31 rotates, the second rotating lever 32 is rotated. Due to the first turn The moving rod 34 rotates in the same direction as the second rotating rod 32, and the rotating direction is reversed, so that the movement of the supporting rod 32 is synthesized into the stretching motion
  • two three-hole hoses (not shown in FIG. 6) are respectively connected inside the ultrasonic treatment head to the ultrasonic transducer 2, and the two three-hole hoses are along the mechanical stretching unit.
  • the articulated arm is led through the handle 1, and the cable 13 has a power supply for supplying the drive motor 23 and a signal line for the button 14.

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Description

一种自动夹合式超声治疗装置 技术领域
本发明属于医疗器械技术领域, 涉及一种超声治疗装置, 具体 涉及一种自动夹合式超声治疗装置。 背景技术
超声波特别是高强度聚焦超声波已经被广泛应用于医疗行业, 用以对患者进行诊断和治疗。高强度聚焦超声治疗技术通过将超声波 聚焦, 可以在病灶上形成高强度、 连续的超声能量, 从而产生瞬态高 温效应 (60 °C〜10(TC ) 、 空化效应、 机械效应和声化学效应, 使细 胞膜、 核膜破裂、 蛋白质凝固, 选择性地使病灶组织凝固性坏死, 使 病灶失去增殖、 浸润和转移的能力, 此外, 高强度聚焦超声治疗技术 除了可用于肿瘤切除,还可以有效治疗其他疾病并且已经得到临床的 认可。
美国专利 US5882302、 US5993389、 US6083159中提供了一种利 用高强度聚焦超声波进行体内止血用的外科用超声装置。 美国专利 US6007499, US6432067也提供了一种外科用超声装置, 该装置利用 高强度聚焦超声在进行外科手术前形成麻醉组织区,防止进行外科手 术时脉管组织出血。在使用时, 该装置中的超声换能器产生聚焦超声 波, 并向病灶组织某一点连续发送, 随后可以通过调整超声换能器的 位置来改变焦点的深度。
虽然上述美国专利中所揭示的超声装置在一定程度上为外科手 术中切除血管丰富的组织起到了止血的作用,可是这些装置在使用上 存在一定的局限性: 其一,操作者需要根据手术切口不同以相同的角 度不断地用手移动大型超声换能器, 操作过程十分复杂, 且容易引起 误操作; 其二, 当需要治疗的组织比较柔软和松散时, 上述装置对目 标组织所产生的压力就会不够, 因此不能有效控制目标组织, 若不能 控制目标组织则会导致超声能量不能到达目标组织,使预期的止血效 果失效; 其三, 由于上述装置只能在病灶组织内形成一个聚焦点, 且 通常超声能量在声通道上也会发生衰减, 因此在治疗过程中, 较厚的 组织 (如肝脏、 脾) 发生凝固性坏死时需要花费大量时间, 提高了治 疗成本。 发明内容
本发明所要解决的技术问题是针对现有技术的上述不足, 提供 一种结构简单、操作便利、在治疗过程中可使病灶组织迅速发生凝固 性坏死从而防止病人失血过多的自动夹合式超声治疗装置。
解决本发明技术问题所釆用的技术方案是该自动夹合式超声治 疗装置包括超声治疗头,其中,所述超声治疗头采用相对设置的两个, 两超声治疗头的中轴线可以重合,两超声治疗头之任一或同时与在运 动过程中可保持两超声治疗头相对的运动单元连接。
所述运动单元可以为任何驱动方式和任何结构, 只要至少能有 使两超声治疗头的中轴线保持重合的工作状态就行。本发明中优选下 面几种:
一种为: 所述运动单元可采用液压驱动的伸缩单元, 所述伸缩 单元包括液压缸、 液压缸上的可伸缩的活塞杆、 液压控制系统, 液压 控制系统与液压缸连通,活塞杆伸縮的方向为超声治疗头中轴线的平 行方向, 活塞杆与超声治疗头相连。
所述两超声治疗头可通过支撑单元各自固定在两个向相反方向 伸缩的活塞杆上;或者其中一个超声治疗头通过支撑单元连接在液压 缸上, 另一超声治疗头通过支撑单元连接在活塞杆上, 所述活塞杆为 可逐级伸出的多级伸缩杆。
为了加强对支撑单元的支撑, 液压缸上还可固定有可随活塞杆 一同伸縮的支撑杆,所述活塞杆和支撑杆同时通过固定件与连接管相 连。
优选的是, 支撑单元采用连接管, 连接管内还可有与超声治疗 头连通可分别用作电缆通道和冷却超声治疗头的进出液通道的孔路。 其中的电缆通道用于安装激励超声换能器发射超声波的电缆。
在实际使用中由于目标组织的大小和形状不同,在支撑单元与 活塞杆之间可通过转接套连接,转接套可使得两个超声治疗头之间保 持平行。转接套可以做成如图 3所示的 Z型,这样安装在其上的超声 治疗头就可以绕开液压缸的高度,从而达到降低两超声治疗头之间距 离的目的。
所述支撑单元上可连接有流体容器, 支撑单元通过可自由旋转 的转接头与流体容器连接, 超声换能器置于流体容器内。 这样, 流体 容器可绕支撑单元自由转动, 因此超声治疗头可在转接头上自由旋 转。
第二种是: 所述运动单元可包括可逐级伸出的多级伸缩杆、 置 于各级伸缩杆内的弹簧、 电机、缠绕在电机输出轴上的绳, 每次级伸 缩杆分别置于上级伸缩杆内的弹簧上,所述绳的另一端依次穿过各级 伸缩杆后与末级伸缩杆相连。
第三种是: 所述运动单元釆用对称设置的两结构相同的机械张 合单元,每个机械张合单元可包括一端可绕定轴转动的第一转动杆和 固定在第一转动杆另一端且转动方向与第一转动杆相逆的第二转动 杆, 两超声治疗头相对固定在两机械张合单元的第二转动杆上。
每个机械张合单元具体包括由驱动电机带动的第一同步带轮、 由第一同步带轮带动的第二同步带轮、固定在第二同步带轮上的第一 转动杆、 由第二同步带轮带动的第三同步带轮、与第三同步带轮固定 在一起的中间齿轮、与中间齿轮啮合的啮合齿轮、固定在啮合齿轮上 的第二转动杆,两个对称的机械张合单元中两个第一同步带轮的运动 方向相反。
在运动单元的控制下, 两个超声治疗头的焦域在治疗装置的任何 开度下都处于同一条直线上, 也就是说, 两个超声治疗头的中轴线始 终保持重合。 这样, 当治疗需要高强度的超声波能量时, 能够进行超 声能量的累加, 即两个超声治疗头同时作用于同一病灶, '加强了治疗 效果, 在治疗过程中, 使较厚的病灶组织 (如肝脏、 脾) 发生凝固性 坏死所需花费的时间大大少于现有技术中的超声治疗头, 节约了治疗 成本。 同时由于所释放的超声波能量不是集中于一个超声换能器上, 因此不会损伤其他内脏器官。 所述超声治疗头包括超声换能器、 可装有流体的流体容器, 超 声换能器置于流体容器内, 流体容器的敞口处固定有透声膜。
所述超声换能器中可开有安装超声治疗引导部件 (比如 B 超探 头) 的槽口。 釆用超声治疗引导部件后就可以对目标组织成像, 以引 导进行超声治疗, 为了给超声治疗引导部件提供激励电源, 所述支撑 单元可为具有四个孔路的连接管,其中一孔路用于安装激励超声治疗 引导部件工作的电源线,另外三个孔路分别用作安装激励超声换能器 发射超声波的电缆通道和冷却超声治疗头的进出液通道的孔路。
为了便于使用者操作, 该自动夹合式超声治疗装置还可包括有 手柄, 所述手柄和运动单元固定连接。
所述超声换能器可根据实际情况的需要釆用聚焦或非聚焦的超 声换能器, 这样本发明还可广泛应用于治疗其它疾病如肿瘤、皮肤病 等。
本发明在进行一些切除血管丰富组织 (比如脾、 肾、 肝脏等) 的 手术前,利用高强度聚焦超声波在需要切割区域与保留区域之间形成 一凝固性坏死区域, 这样在切除肝脏等组织的手术中, 就可把该凝固 性坏死区域作为手术刀的切割区域,由于本发明装置的结构极易于操 作者进行自动操作,通过操控运动单元使得两个超声治疗头夹紧目标 组织, 就能有效控制目标组织, 切割的过程中不会失去过多的血, 减 少输血的可能性, 也减少了手术后并发症的发生。 并且, 本发明两个 超声治疗头可以同时工作, 缩短了让切口发生凝固性坏死所需要的时 间, 也保证了对目标组织的止血效果。
本发明还具有结构简单、 治疗成本低、 用途广(超声换能器可以 根据需要选择不同的规格) 等优点。 附图说明
图 1 为本发明实施例 1的结构示意图
图 2 为本发明实施例 1中连接管的结构示意图
图 3 为本发明实施例 2的结构示意图
图 4 为图 3中治疗钳不同侧面的立体图 图 5 为本发明实施例 3中运动单元的结构示意图
图 6 为本发明实施例 4中运动单元的结构示意图
图中: —手柄 2—超声换能器 3—流体容器 4一连接管 5、 18—固定件 6—活塞杆 7—支撑杆 8—端盖 9、 10、 11、 12 - 输送管 13—电缆 14一按钮 15—液压控制系统 16—转接头 17 一槽口 19一弹簧 20—电机 21 -—级伸缩杆 22-绳 23—驱动 电机 24—第一同步带轮 25—齿轮 26—前支撑杆 27—第一同步 带 28、 30—销 29—第二同步带 31—啮合齿轮 32—第二转动杆 33—第二同步带轮 34—第一转动杆 35-中间齿轮 36—第三同 步带轮 37-转接套 38—液压缸 39—二级伸缩杆 40—末级伸 缩杆 41一支撑套 42—过渡齿轮 43—齿轮 具体实施方式
如图 1、 3、 4、 5、 6 所示, 本发明包括两个相对设置的超声治 疗头以及使两超声治疗头做相对运动的运动单元。两个超声治疗头相 对安装于运动单元的前端头, 其轴线重合。
所述超声治疗头包括超声换能器 2、 可装有流体的流体容器 3, 超声换能器 2置于流体容器 3内,流体容器 3的敞口处固定有透声膜 (图中未示出) 。
超声换能器 2 可采用聚焦或非聚焦换能器。 聚焦超声换能器可 为单个圆形的压电陶瓷晶片加透镜聚焦, 也可以是单个球面形、单弧 面压电陶瓷晶片,还可以是由多个同一或不同尺寸的压电陶瓷晶片组 合成的压电陶瓷阵列, 其驱动方式可以是单一信号驱动, 也可是多路 信号按相位控制方式驱动。聚焦换能器主要用于术中止血和治疗组织 中较深部位的病灶 (如肝脏肿瘤、 骨肿瘤以及深部肌肉瘤等) 。
非聚焦超声换能器可为单个平面压电陶瓷晶片, 也可以为由多 个同一或不同尺寸的平面压电陶瓷晶片组合成的压电陶瓷阵列,其驱 动方式可以是单一信号驱动, 也可是多路信号按相位控制方式驱动。 非聚焦换能器主要用于治疗皮肤病变以及浅表病灶等。
超声换能器 2 中还可开有槽口 17, 在该槽口 17 中可固定有 B 超探头等超声治疗引导部件, 用以引导迸行超声治疗。
超声治疗头可用通过支撑单元支撑, 支撑单元的一端与流体容 器 3连接, 另一端通过固定装置连接头到运动单元上。
下面结合实施例及附图, 对本发明作进一步详细叙述。
以下实施例为本发明的非限定性实施例。
实施例 1 :
如图 1所示, 本发明包括手柄 1、 超声治疗头、运动单元, 超声 治疗头的支撑单元。
运动单元采用液压驱动的伸缩单元,所述伸縮单元固定在手柄 1 上, 其包括液压缸 38、 液压缸 38上的可逐级伸出的多级活塞杆 6、 支撑杆 7、 密封液体的端盖 8、 液压控制系统 15。
液压控制系统 15通过输送管 9、 10、 11、 12与液压缸 38连通, 输送管 9、 U给上、 下侧液压缸输送液体, 输送管 10、 12将液压缸 38内的液体经压力输送到液压控制系统 15, 活塞杆伸縮的方向为超 声治疗头中轴线的平行方向, 活塞杆 6与超声治疗头相连。 支撑杆 7 固定在液压缸 38上随活塞杆 6—同伸缩。
超声治疗头采用相对设置的两个, 两超声治疗头的轴线重合。 超 声治疗头通过支撑单元(即连接管 4)固定到液压缸 38的多级活塞杆 6上, 超声治疗头与连接管 4的一端相连, 连接管 4的另一端通过固 定件 5与液压缸的多级活塞杆 6固定连接, 在液压缸 38上随多级活 塞杆 6—起运动的支撑杆 7也通过固定件 5与连接管 4固定连接。
超声治疗头包括可装有流体的流体容器 3、 超声换能器 2、 透声 膜(图未示) , 流体容器 3中充满的流体为脱气水, 本实施例中, 流 体釆用纯净水,超声换能器采用可聚焦的单弧面压电陶瓷晶片,此种 换能器主要用于术中止血以及组织深部体积较大的病灶。
手柄 1上还有两个按钮 14,通过电缆 13与液压控制系统 5相连, 用于控制液压缸 38中多级活塞杆 6的升降,从而带动超声治疗头的支 撑单元 (即连接管 4 ) 作升降运动。
如图 2所示, 连接管 4内具有三个孔路, 该三个孔路都与超声 治疗头连通, 一个孔路用于安装激励超声换能器发射超声波的电缆, 一个孔路用作输入脱气水的进水通路,一个孔路用作脱气水的回水通 路。因此,连接管 4既用于支撑超声治疗头,又是电路和水路的通道。 本实施例中, 进水通道和回水通道都与流体容器 3连通, 流体容器 3 中的纯净水既作为超声藕合介质, 同时又是超声换能器 2的冷却液, 通过纯净水的流动, 可迅速带走治疗过程中超声换能器 2 产生的热 量。
两个超声治疗头中的超声换能器 2 的频率可相同也可不同, 且 两个超声换能器 2分别由两套驱动机构进行驱动, 治疗时, 可以根据 实际情况让一个超声治疗头参与治疗,也可同时让两个超声治疗头都 参与治疗。
使用本实施例装置进行治疗时, 使用者操作按钮 14, 控制液压 控制系统 15进入 /流出液压缸 38的液体体积,使得一个 /两个活塞杆 6发生伸缩运动, 从而带动超声治疗头发生升降运动, 直至超声治疗 头达到理想的位置后夹紧靶体,然后驱动超声治疗头发射超声波对靶 体进行治疗。 治疗的过程中, 两个超声治疗头始终保持平行, 通过连 接管 4中的孔路不断输入纯净水给超声治疗头,并利用回水孔路回收 纯净水, 最终在靶体内形成凝固性坏死区域。
若是为了止血目的使用本发明,则使超声波在手术需切割区域 与保留区域之间聚焦形成一凝固性坏死区, 使本区域内的组织坏死, 血液凝固,医生用手术刀切除病灶区域时 (比如切除肝脏等的病灶组 织) , 切割的过程中不会失血过多, 减少了输血的可能性, 也减少了 术后并发症的发生, 若是治疗肿瘤等病灶, 则最终使这些病灶失去增 殖、 浸润和转移的能力。 实施例 2 :
如图 3、 4所示, 本实施例中与实施例 1的区别是: 相对设置的 两个超声治疗头中仅有一个超声治疗头连接在活塞杆 6上,另一个通 过连接管 4利用固定件 18固定到液压缸的端盖 8的底侧。
与活塞杆 6相连的超声治疗头由连接管 4通过转接套 37连接, 转接套 37做成与超声治疗头中轴线平行并向两治疗头靠近的方向延 伸一定距离的形状, 这样就可以降低两超声治疗头之间的距离, 两个 超声治疗头仍然保持平行。 同时由于转接头 16可自由旋转, 因此两 超声治疗头可通过转接头 16连接到连接管 4上。
同时, 本实施例中两个超声换能器 2 中开有槽口 17, 槽口 17 内固定有 B超探头 (图中未示出) , 用以对靶体成像, 超声治疗头根 据成像的结果, 对靶体进行治疗。
连接管 4 内具有四个孔路, 其中一孔路用于安装激励 B超探头 工作的电 ¾ί线, 另外三个孔路的作用与实施例 1相同。
本实施例中, 超声换能器 2釆用由多个同一或不同尺寸的压电 陶瓷晶片组合成的压电陶瓷阵列,该阵列的驱动方式是多路信号按相 位控制方式驱动, 这样, 操作者可以根据病灶的深浅等实际情况激励 超声换能器 9, 使焦点更精确, 能量更适合。
本实施例的其它结构和使用方法与实施例 1相同。 实施例 3:
本实施例中除了运动单元外, 其他结构都与实施例 2相同。 本实施例中的运动单元采用电机驱动的多级弹簧结构。
如图 5 所示, 运动单元包括可逐级伸出的多级伸缩杆、 置于各 级伸缩杆内的弹簧 19、 电机 20、 软绳 22。 本实施例中多级伸缩杆采 用三级, 即一级伸缩杆 21、 二级伸縮杆 39、 末级伸缩杆 40。 每次级 伸缩杆分别置于上级伸缩杆内的弹簧 19 上。 其中, 一级伸缩杆 21 置于支撑套 41 内的弹簧 19上, 二级伸缩杆 39置于一级伸缩杆 21 内的弹簧上, 末级伸缩杆 40置于二级伸缩杆 39内的弹簧上。所述绳 22—端缠绕在电机 20的输出轴上, 另一端依次穿过各级伸缩杆后与 末级伸缩杆 40相连。末级伸缩杆 40通过连接管 4与超声治疗头相连。
当电机 20转动时, 在弹簧 19的张力作用下带动绳 22作升降运 动, 带动多级支撑杆作升降运动。 固定件 5连接在多级支撑杆上, 从 而带动超声治疗头的支撑单元 (即连接管 4) 作升降运动。
实施例 4:
本实施例中出来运动单元外, 其余结构都与实施例 1相同。 本实施例中, 所述运动单元采用对称设置的两结构尺寸都相同 的机械张合单元。
如图 6所示, 所述对称设置的右侧的机械张合单元包括由驱 动电机 23驱动的齿轮 25、与齿轮 25连在一起的第一同步带轮 24、 前支撑杆 26、 由第一同步带轮 24通过第一同步带 27带动的第二 同步带轮 33、第一转动杆 34、 由第二同步带轮 33通过第二同步带 29带动的第三同步带轮 36、与第三同步带轮 36固定在一起的中间 齿轮 35、 与中间齿轮 35啮合的啮合齿轮 31、 第二转动杆 32。 第 二同步带轮 33上固定有销 28, 第一转动杆 34的一端连接在销 28 上随其转动, 啮合齿轮 31上固定有销 30, 第二转动杆 32连接在 销 30上随其转动, 两相对设置的超声治疗头分别连接在第二转动 杆 32的前端部。左侧的机械张合单元中, 由驱动电机 23的输出齿 轮与过渡齿轮 42啮合, 过渡齿轮 42再与齿轮 43啮合, 其余结构 与右侧的机械张合单元同。
第一转动杆 34、第二转动杆 32的运动合力形成两超声治疗头的 相对运动。 其中, 前支撑杆 26主要起支撑作用, 而通过第二转动杆 32、 第一转动杆 34的转动作用来实现超声治疗头相对的张合运动。
该机械张合单元的传动方式为: 当驱动电机 23转动时, 分别带 动左、 右侧的机械张合单元同时运动。 左侧机械张合单元中, 齿轮 25与过度齿轮 42啮合, 过度齿轮 42再带动齿轮 43转动, 而右侧机 械张合单元中,齿轮 25直接与驱动电机 23的输出齿轮啮合,这样使 得左右两侧相对设置的两个齿轮 25、 43的转动方向相反。 分别与齿 轮 25、 43连在一起的两个第一同步带轮 24随齿轮 25、 43转动, 而 第一同步带轮 24带动两个第一同步带 27转动, 两个第一同步带 27 分别带动两个第二同步带轮 33转动, 第二同步带轮 33与销 28连在 一起, 故第二同步带轮 33转动时, 第一转动杆 34绕销 28转动; 同 时, 第二同步带轮 33带动第三同步带轮 36运动, 第三同步带轮 36 带动中间齿轮 35转动, 中间齿轮 35带动啮合齿轮 31转动, 而啮合 齿轮 31与销 30固定在一起,第二转动杆 32与销 30固定在一起,所 以, 当啮合齿轮 31转动时, 带动第二转动杆 32作转动。 由于第一转 动杆 34与第二转动杆 32同转动,且转动方向相反,从而使得支撑杆 32的运动合成为两超声治疗头的张合运动。
本实施例中,在超声治疗头内部还有两个具有三孔的软管(图 6 中未示出)分别和超声换能器 2连接,两个三孔软管沿着机械张合单 元的关节臂穿过手柄 1 引出, 电缆线 13 中有用于提供驱动电机 23 的电源和用于按钮 14的信号线。

Claims

权利要求书
1. 一种自动夹合式超声治疗装置, 包括超声治疗头, 其特征在 于所述超声治疗头采用相对设置的两个,两超声治疗头的中轴线可以 重合,两超声治疗头之任一或同时与在运动过程中可保持两超声治疗 头相对的运动单元连接。
2. 根据权利要求 1所述的自动夹合式超声治疗装置, 其特征在 于运动单元采用液压驱动的伸缩单元, 所述伸缩单元包括液压缸 ( 38 ) 、 液压缸上的可伸缩的活塞杆 (6 ) 、 液压控制系统 (15 ) , 液压控制系统与液压缸连通,活塞杆伸缩的方向为超声治疗头中轴线 的平行方向, 活塞杆与超声治疗头相连。
3.根据权利要求 2所述的自动夹合式超声治疗装置, 其特征在 于所述两超声治疗头可通过支撑单元各自固定在两个向相反方向伸 缩的活塞杆 (6) 上; 或者其中一个超声治疗头通过支撑单元连接在 液压缸 (38) 上, 另一超声治疗头通过支撑单元连接在活塞杆 (6) 上, 所述活塞杆 (6 ) 为可逐级伸出的多级伸缩杆。
4. 根据权利要求 3所述的自动夹合式超声治疗装置, 其特征在 于液压缸上还固定有可随活塞杆一同伸缩的支撑杆 (7 ) , 所述活塞 杆 (6) 和支撑杆 (7 ) 同时通过固定件 (5 ) 与支撑单元相连。
5.根据权利要求 3所述的自动夹合式超声治疗装置, 其特征在 于支撑单元 (4) 采用连接管, 连接管内有与超声治疗头连通可分别 用作电缆通道和冷却超声治疗头的进出液通道的孔路。
6. 根据权利要求 3所述的自动夹合式超声治疗装置, 其特征在 于所述支撑单元上连接有流体容器 (3 ) , 支撑单元通过可自由旋转 的转接头 (16 ) 与流体容器 (3 ) 连接, 超声换能器 (2 ) 置于流体容 器 (3 ) 内
7.根据权利要求 1 所述的自动夹合式超声治疗装置, 其特征在 于所述运动单元包括可逐级伸出的多级伸縮杆、置于各级伸缩杆内的 弹簧 (19 ) 、 电机 (20 ) 、 缠绕在电机输出轴上的绳 (22 ) , 每次级 伸缩杆分别置于上级伸縮杆内的弹簧上,所述绳的另一端依次穿过各 级伸缩杆后与末级伸縮杆 (40 ) 相连。
8. 根据权利要求 1所述的自动夹合式超声治疗装置, 其特征在 于所述运动单元采用对称设置的两结构尺寸相同的机械张合单元,每 个机械张合单元包括一端可绕定轴转动的第一转动杆和固定在第一 转动杆另一端且转动方向与第一转动杆相逆的第二转动杆,两超声治 疗头相对固定在两机械张合单元的第二转动杆上。
9. 根据权利要求 8所述的自动夹合式超声治疗装置, 其特征在 于所述机械张合单元包括由驱动电机(23 )带动的第一同步带轮(24)、 由第一同步带轮带动的第二同步带轮(33 )、 固定在第二同步带轮上 的第一转动杆 (34) 、 由第二同步带轮带动的第三同步带轮 (36 ) 、 与第三同步带轮固定在一起的中间齿轮(35 )、与中间齿轮啮合的啮 合齿轮(31 ) 、 固定在啮合齿轮 (31 )上的第二转动杆 (32 ) , 两个 对称的机械张合单元中两个第一同步带轮 (24) 的运动方向相反。
10. 根据权利要求 1一 9之一所述的自动夹合式超声治疗装置, 其特征在于所述超声治疗头包括超声换能器 (2 ) 、 可装有流体的流 体容器 (3 ) , 超声换能器置于流体容器内, 流体容器的敞口处固定 有透声膜。
11. 根据权利要求 10所述的自动夹合式超声治疗装置, 其特征 在于所述超声换能器中开有安装超声治疗引导部件的槽口 (17 ) 。 2008/031303
12. 根据权利要求 11所述的自动夹合式超声治疗装置, 其特征 在于所述超声换能器采用聚焦或非聚焦超声换能器。
PCT/CN2007/000541 2006-09-13 2007-02-14 Dispositif thérapeutique de serrage automatique à ultrasons WO2008031303A1 (fr)

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