摘要:
A tissue displacement/separation device includes a seamless bladder constructed of a biodegradable polymer. The bladder is expandable from a collapsed or rolled state for insertion into a body between a first and second tissue to an expanded state for separating the first and second tissue.
摘要:
The method determines parameters to generate confocal ultrasound beams (B1,B2) inside a medium (4), and uses a device (1) comprising first and second ultrasound means (11,12) and first and second displacement members (13,14) for moving the ultrasound means (11,12). The parameters include signals s1,s2 to the ultrasound means (11,12), and the positions x1,x2 of the ultrasound means (11,12). The parameters are optimized for having a minimum amplitude a1,a2 of the signals s1,s2 and having an acoustic effect inside the medium (4).
摘要:
The present disclosure is directed to a surgical navigation system. The navigation system includes an ultrasound device configured to obtain an ultrasound image in a scan plane The ultrasound device has a fiducial pattern disposed thereon. A surgical device having an image capture device configured to capture a fiducial image of the fiducial pattern is also provided. The system also includes a controller configured to receive the ultrasound image and the fiducial image, wherein the controller determines a position of the surgical device in relation to the scan plane based on the fiducial image. A display is configured to display the ultrasound image and a virtual image of the surgical device based on the position of the surgical device in relation to the scan plane.
摘要:
A method and apparatus for treating uterine tissue with ultrasound energy. The method manipulates the position of the patient's uterus to decrease its distance from an ultrasound therapy transducer while simultaneously engaging a partially filled bladder such that the bladder is compressed to force any bowel tissue out of an acoustic window between the patient's abdominal wall and uterus. Ultrasound energy is then applied to the uterine tissue.
摘要:
An apparatus comprises a body, a shaft assembly, and an end effector. The shaft assembly extends distally from the body. The end effector is located at a distal end of the shaft assembly. The end effector comprises an ultrasonic blade, a clamp arm, and a sleeve. The ultrasonic blade is configured to vibrate at an ultrasonic frequency. The clamp arm is configured to move toward the ultrasonic blade. The sleeve extends along at least part of the length of an outer portion of the ultrasonic blade or the clamp arm. The sleeve is configured to prevent tissue from contacting a portion of the ultrasonic blade or clamp arm covered by the sleeve.
摘要:
The invention provides for a medical instrument (300, 500, 600) comprising a high intensity focused ultrasound system (302) comprising an ultrasonic transducer (306) with multiple transducer elements (400, 402, 404, 406, 408). The medical instrument further comprises a memory (334) containing machine executable instructions (350, 352, 354, 520, 522, 524) which cause a processor to receive (100, 200) a treatment plan (340) specifying a protected zone (322) within a subject (301) and to calculate (102, 208) a set of transducer control parameters (342) using the treatment plan. The set of transducer control parameters specify the switching of electrical power to the multiple transducer elements. An ultrasonic intensity estimate (900) in the protected zone is below a predetermined threshold. The ultrasonic intensity estimate is calculated using an incoherent sum of the ultrasonic pressure generated by each of the multiple transducer elements.
摘要:
An ultrasonic surgical instrument includes an elongate substantially rigid probe and an elongate tubular sheath member. The probe is operatively connected at a proximal end to a source of ultrasonic mechanical vibrations and has a distal tip configured for transmitting ultrasonic vibration energy into organic tissues. The probe longitudinally traverses the sheath member. The sheath member has a distal edge with a first portion on one side of the probe and a second portion on an opposite side of the probe. The first portion of the distal edge of the sheath member is disposed substantially closer than the second portion of the sheath's distal edge to the distal tip of the probe. The second portion of the distal edge is so spaced from the distal tip as to permit effective visualization of the distal tip during use of the instrument.
摘要:
This invention discloses methods and devices using ultrasound energy for use before, during or after surgery for providing a therapeutic effect on nerve tissue. The disclosure describes the use of ultrasound devices consisting of an ultrasound generator, ultrasound transducer and ultrasound horn at least partially enclosed by a shield to enhance neurogenesis on neurons of the central nervous system and other nerve tissue. The shield allows the application of therapeutic levels of ultrasound to nerve tissue to enhance the regeneration of the nerve tissue and mitigate damage to the nerve tissue. The shield serves to protect patient from unwanted contact with portions of the ultrasound horn not being utilized for therapeutic effect. The ultrasound application may be included in devices that have other uses such as a cutting edge for removing tissue.
摘要:
This invention discloses methods and devices using ultrasound energy for use before, during or after surgery for providing a therapeutic effect on nerve tissue. The disclosure describes the use of ultrasound devices consisting of an ultrasound generator, ultrasound transducer and ultrasound horn at least partially enclosed by a shield to enhance neurogenesis on neurons of the central nervous system and other nerve tissue. The shield allows the application of therapeutic levels of ultrasound to nerve tissue to enhance the regeneration of the nerve tissue and mitigate damage to the nerve tissue. The shield serves to protect patient from unwanted contact with portions of the ultrasound horn not being utilized for therapeutic effect. The ultrasound application may be included in devices that have other uses such as a cutting edge for removing tissue.
摘要:
An ultrasonic transducer of the type containing a cylindrical piezoelectric active element mounted on a supporting tube is provided with a backing component made of an electrically and thermally insulating material forming a sleeve which extends between the piezoelectric element and the supporting tube. An insulating material is selected for the backing component which includes a substantial amount of entrained air. Preferably, the backing component is made of expanded polytetrafluoroethylene (EPTFE).