Modular portable ultrasound systems
The present invention relates to a lightweight, high resolution portable ultrasound system using components and methods to improve connectivity and ease of use. A preferred embodiment includes an integrated system in which the beamformer control circuitry can be inserted into the host computer as a peripheral or within the processor housing. The modular system can include a docking assembly for a cart system having a console to operate the system and house additional communications and peripheral systems.
This application claims priority of Provisional Application No. 60/525,208 filed Nov. 26, 2003 entitled: MODULAR PORTABLE ULTRASOUND SYSTEM. The above application is incorporated entirely herein by reference.
BACKGROUND OF THE INVENTIONConventional ultrasound imaging systems typically include a hand-held probe coupled by cables to a large rack-mounted console processing and display unit. The probe typically includes an array of ultrasonic transducers which transmit ultrasonic energy into a region being examined and receive reflected ultrasonic energy returning from the region. The transducers convert the received ultrasonic energy into low-level electrical signals which are transferred over the cable to the processing unit. The processing unit applies appropriate beam forming techniques to combine the signals from the transducers to generate an image of the region of interest.
Typical conventional ultrasound systems include a transducer array each transducer being associated with its own processing circuitry located in the console processing unit. The processing circuitry typically includes driver circuits which, in the transmit mode, send precisely timed drive pulses to the transducer to initiate transmission of the ultrasonic signal. These transmit timing pulses are forwarded from the console processing unit along the cable to the scan head. In the receive mode, beamforming circuits of the processing circuitry introduce the appropriate delay into each low-level electrical signal from the transducers to dynamically focus the signals such that an accurate image can subsequently be generated.
There still remains a need to provide stand-alone processing ultrasound units with the necessary hardware, for example, connectors to enable truly portable ultrasound systems that can function on an independent platform. There is a need for an ultrasound transducer connector assembly with an electrical connector of minimal mechanical complexity, size and cost.
SUMMARY OF THE INVENTIONThe system and method of the present invention includes a hand held transducer probe that is connected by wire or wireless connection to a lightweight processing unit including a housing and internal circuitry for processing signals received from the probe. In a preferred embodiment the processing unit housing includes a display and manual and/or virtual controls that can control the display and processor operation, and a battery providing power to the processor housing and the transducer array. A preferred embodiment includes a console of a cart system to provide control features of the modular system.
In a preferred embodiment of the invention, the processor housing includes a transmit/receive (T/R) chip that communicates with the transducer array. A system controller communicates with the T/R chip, a local memory, a preamplifier/TGC chip, a charge domain beamformer circuit and a standard high speed communication interface such as IEEE 1394 USB connection to a system processor.
A preferred embodiment of the invention includes a connector system to secure the cable from the transducer probe to the processor housing. The connector system preferably uses a smaller lightweight connector than prior art systems yet meeting the standard shielding and mechanical strength and integrity requirements for medical ultrasound imaging systems.
A preferred embodiment of the invention includes a circuit that identifies the type of transducer array that has been connected to the housing. The circuit can be a single integrated circuit contained in the housing connector module that communicates with the processor and can include a memory storing calibration data for each probe. The display screen will display probe type information for the user. The connector system can include a connector actuator or lock that can be manually actuated by the user to secure the male and female connector elements. In a preferred embodiment a lever is rotated from a first position to a second position such that a cam element attached to the lever mates with a catch element on the cable connector element attached to the probe cable. The lever pulls the connector in and also operates to push the connector element out when actuated in the reverse direction thereby reducing the strain often caused by the user in pulling the cable connector element out of the housing connector element.
In accordance with a preferred embodiment, the method for performing an ultrasound scan on a region of interest of a patient includes connecting a probe to a portable processing unit with a connector system, locking the connector in place, employing the onboard identification circuit to identify the probe and display probe information on the display prior to the scan, entering patient information and performing the scan. Another preferred embodiment of the invention includes a cart system in which the processor housing and display can be connected or docked with a mobile station or cart having a control panel and a port assembly for receiving one or more transducer probes.
The foregoing and other features and advantages of the system and method for ultrasound imaging will be apparent from the following more particular description of preferred embodiments of the system and method as illustrated in the accompanying drawings in which like reference characters refer to the same parts throughout the different views.
BRIEF DESCRIPTION OF THE DRAWINGS
Preferred embodiments of the present invention include modular, portable ultrasound systems that can be used as a stand-alone system. The preferred embodiments integrate the display with the processing unit which is then connected to different ultrasound transducer probes. Preferred embodiments as described in U.S. patent application Ser. No. 10/386,360, filed on Mar. 11, 2003, the entire teachings of which are incorporated herein by reference, include a display integrated on the ultrasound transducer. The operator can easily view the image and operate the probe or scan head, as well as perform operations in the same local area with the other hand. The data/video processing unit is also compact and portable, and may be placed close to the operator or alternatively at a remote location. Optionally, in another embodiment, a display is also integrated into the data/video processing unit. The processing unit also provides an external monitor port for use with traditional display monitors.
The data/video processing unit 16 is compact and portable. In a preferred embodiment, the beamformer electronics is an integral part of the processing unit and communicating with a single board computer 110 using a Firewire (IEEE 1394) cable as illustrated in
In a preferred embodiment, the beamformer electronics is moved inside the processing unit to further reduce the size and weight of the hand-held transducer as illustrated in
An operating environment for the system includes a processing system with at least one high speed processing unit and a memory system. In accordance with the practices of persons skilled in the art of computer programming, the present invention is described with reference to acts and symbolic representations of operations or instructions that are performed by the processing system, unless indicated otherwise. Such acts and operations or instructions are sometimes referred to as being “computer-executed”, or “processing unit executed.”
It will be appreciated that the acts and symbolically represented operations or instructions include the manipulation of electrical signals by the processing unit. An electrical system with data bits causes a resulting transformation or reduction of the electrical signal representation, and the maintenance of data bits at memory locations in the memory system to thereby reconfigure or otherwise alter the processing unit's operation, as well as other processing of signals. The memory locations where data bits are maintained are physical locations that have particular electrical, magnetic, optical, or organic properties corresponding to the data bits.
The data bits may also be maintained on a computer readable medium including magnetic disks, optical disks, organic disks, and any other volatile or non-volatile mass storage system readable by the processing unit. The computer readable medium includes cooperating or interconnected computer readable media, which exist exclusively on the processing system or is distributed among multiple interconnected processing systems that may be local or remote to the processing system.
In an embodiment, the compact single board computer has a printed circuit board size of a 5¼ inch disk drive or a 3½ inch disk drive. One embodiment of the present invention uses a NOVA-7800-P800 single board computer in a 5¼ inch form factor, with a low power Mobile Pentium-III 800 MHz processor, 512 Mbytes of memory, and has on board interface ports for Firewire (IEEE 1394), local area network (LAN), Audio, integrated device electronics (IDE), personal computer memory card international association (PCMCIA) and Flash memories.
For some dedicated applications, the entire ultrasound system includes the hand-held ultrasound transducer with an integrated display and the portable data/video processing unit. The system can be operated without any controls other than power on/off. For other applications, the system is equipped with an optional operator interface such as buttons and knobs, either on the processing unit, or integrated in the transducer assembly, or both. The processing unit can provide an additional video output to drive an external monitor, or optionally an integrated display on the processing unit itself.
The microprocessor in
The graphical user interface includes a touch screen having no drift, and providing for finger operation (no RF pens). The ports for the processing unit include at least 2 universal serial bus (USB) ports to connect an external keyboard, mouse, CDW, and an Ethernet port. The processing unit provides for battery operation, two hours minimum at peak processing power of 7 watt required for ultrasound.
A preferred embodiment of the processing unit provides for modularity with a removable processing unit 208 residing inside the ultrasound system. An ultrasound control pad module 212 and custom keyboard 204 can be made removable or configurable. The module 200 itself can also be used as an outside remote control module (USB or wireless) or as an OEM building block. The display module 202 can be made configurable (10-inch or 12-inch), Sun readable or configurable with different platforms. The module has a stand, as illustrated in
An interlock is included to sense if a probe is present and to determine the calibration coefficient in accordance with a preferred embodiment of the present invention. A one wire identification (ID) chip for identifying the transducer is included in accordance with a preferred embodiment of the present invention. The computer can be pre-programmed with signal conditioning for each probe in accordance with a preferred embodiment of the present invention. By effectively connecting the probe, the circuit identifies the probe and accesses the pre-programmed conditions for that probe. Calibration coefficients are stored for each probe in the memory of the processing unit. The system can include multiple connection ports that allows for the connection of two or three probes to one system using a multiplexed interface.
Preferred embodiment of the medical ultrasound systems use many transducers depending upon the application. These systems also identify which transducer is attached at any given time in accordance with a preferred embodiment of the present invention.
In addition to identifying the transducer type, preferred embodiments also identify the individual probe of the same type, such that calibration information can be associated with a particular probe. The one-wire ID circuits described with respect to
Each ID chip has a unique serial number, plus a writable/readable memory for storage of calibration or additional identification data. In an ultrasound application of a preferred embodiment, the serial number and probe type information are accessed from memory upon probe insertion. The information is used to call up the appropriate transducer parameters and the new probe is then made available to the user on the display screen, as shown in
In addition to the identification, each transducer is unique and it is desirable to calibrate out these differences in accordance with a preferred embodiment of the present invention. Therefore, software executable instructions are provided by the ultrasound applications control for storing and retrieving individual calibration data to the ID chip. Examples of calibration differences can include electrical, acoustic and mechanical differences. These may be used, but are not limited to, procedures such as mounting of needle guides for biopsy, three-dimensional positioning sensing devices and transducer element variation calibration.
A method of probe type identification is usually provided by using multiple connector pins which are tied to logic zero or one. To differentiate between 32 probe types, 5 connector wires are required. In the one-wire method, only a single wire is required, and the data is passed between the probe and the host system serially.
The invention incorporates a read/writable non-volatile memory chip (ID chip) in the transducer termination board, as shown in
The memory of the ID chip is organized as 128 words of 32 bits wide, divided into four segments: The IDENTIFICATION segment, the USAGE segment, the FACTORY segment and the USER segment shown in
The IDENTIFICATION segment holds the information which identifies the transducer type and hardware revision and serial number. The Ultrasound Application reads these information when a transducer is attached to a system and performs the appropriate set up based on the transducer type and hardware revisions. This segment is written at the factory and is not modifiable by the user.
The USAGE segment holds the statistical information about the usage of the transducer. The first entry logs the serial number and date when the transducer is first used outside of the factory (the Inauguration System Serial # and Date code). The second and third entries in this segment logs the serial number and the date of the two systems most recently the transducer was attached to. The Date Code values are Julian date of the conection date minus the Julian date of Jan. 1, 2000. The 16 bit date code field can sotre dates of more than a century starting from the year 2000. The 16 but date code filed can store dates of more than a century starting from the year 2000. The fourth word of the USAGE segment is a counter which increments once per 5 minutes when a transducer is attached and activated in a system. These statistical information are updated in the field by the Ultrasound Application software, and is not modifiable by the user. The values are set to zeros before the transducer leaves the factory. These statistical information are read and recorded when a transducer is returned to the factory for service.
The FACTORY segement holds the factory calibration information for the transducer. Examples of factory calibration data are the per element gain and propagation delay fine adjustments. When a transducer is attached and activated by the Ultrasound Application, the application first reads the transducer ID information from the IDENTIFICATION segment and loads up the appropriate set ups for that particular transducer type. The application then reads the FACTORY segement and applies the fine adjustments to the transducer set up. This segment is written at the factory and is not modifiable by the user.
The USER segment is reserved for the end user to store post-factory calibration data. Example of post-factory calibration data are position information of needle guide brackets and 3-D position sensing mechanism. The USER segment is the only segment which the user application software can modify.
When a TRANSDUCER ATTACHE event is detected, the Transducer Management Software Module first reads the Transducer Type ID and hardware revision information from the IDENTIFICATION Segment. The information is used to fetch the particular set of transducer profile data from the hard disk and load it into the memory of the application program. The software then reads the adjustment data from the FACTORY Segment and aplies the adjustments to the profile data just loaded into memory. The software module then sends a TRANSDUCER ATTACHE Message to the main ultrasound application program, which uses the transducer profile already loaded and perform ultrasound imaging. The Transducer Management Software Module then waits for either a TRANSDUCER DETACH event, or the elapse of 5 minutes. If a TRANSDUCER DETACH is detected, the transducer profile data set is removed from memory and the module goes back to wait for another TRANSDUCER ATTACHE event. If a 5 minutes time period expires without TRANSDUCER DETACH, the software module increments the Cumulative Usage Counter in the USAGE Segment, and waits for another 5 minutes period or a TRANSDUCER DETACH event.
There are many types of ultrasound transducers. They differ by geometry, number of elements, and frequency response. For example, a linear array with center frequency of 10 to 15 MHz is better suited for breast imaging, and a curved array with center frequency of 3 to 5 MHz is better suited for abdominal imaging.
It is often necessary to use different types of transducers for the same or different ultrasound scanning sessions. For ultrasound systems with only one transducer connection, the operator will change the transducer prior to the start of a new scanning session.
In some applications, it is necessary to switch among different types of transducers during one ultrasound scanning session. In this case, it is more convenient to have multiple transducers connected to the same ultrasound system, and the operator can quickly switch among these connected transducers by hitting a button on the operator console, without having to physically detach and re-attach the transducers, which takes a longer time.
The switching among different connected transducers can be implemented either by arrays of relays 554 as seen in
The present invention utilizes a system that performed a method of multi-transducer switching using multiple Transmit/Receive integrated circuits 562, 564 as seen in
The Transmit/Receive integrated circuit includes multiple channel devices with a programmable waveform generator and high voltage driver for each transducer element, and a receive routing circuit for each element pair. The receive output is programmable to receive from transducer element 566 or 568 of the element pair, or turned off. The outputs of multiple integrated circuits are wired together. Connection to diferent transducers in the same system is achieved by programming the On/Off states of individual receive channels amoung the multiple integrated circuits, and by programming the transmit sequence of each of the transmit channels on all of the integrated circuits.
One advantage of this approach is the higher intergration over the use of commercial available relays and multiplexer chips, especially when compared to a relay switching approach, because relays are mechanical devices and are generally larger. There are two versions of these, Transmit/Receive integrated circuits, one version has 64 transducer element channels and another version has 32 transducer channels. This high channel count integration of at least 32 channels combined with the small high pin density transducer connector, allows implementation of a multiple transducer configuration in a very compact size.
Another advantage is the elimination of an extra circuit layer, when compared to the multiplexer chips approach. Typical commercial multiplexer chips suitable for ultrasound channel switching typically have an ON resistance of greater than 20 ohms (example, Supertex HV20220), and therefore have measureable attenuation of both the transmit and receive signals compared with a direct connection in a single transducer system. The present approach has identical transmit/receive circuit for single transducer system, or multiple transducers system, with no additional signal attenuation resulting from adding the multiple transducers switching function.
Yet another advantage of the present approach is the added ability to operate a very large element count transducer with a true full transmit aperture. For example, a 128 channel ultrasound engine can operate a 768 element linear array by adding a one to six multiplexer array. A traditional implementation using relays of multiplexers can switch among six segements of 128 elements each across the entire 768 elements at any one time. The present approach will have 768 programmable transmitter, and therefore can use any size of transmit aperture anywhere on transducer array, including using the entire 768 element at the same time. The ability to use larger than 128 element transmit aperture allows the ultrasound system to have better penetration and resolution, compared to systems that are limited to 128.
The movable connector component has electrical contacts that mate with the stationary connector component having stationary electrical contacts on the processing unit. For mating, the movable connector component is brought towards the stationary connector component. Initially, there is a gap separating the movable electrical contacts from stationary electrical contacts, so that the contacts are not subjected to any friction or insertion force. A locking mechanism draws in the movable connector component which is received in a recess of the stationary connector component. The lever slides from right to left causing the movable connector component to close into the recess and contact the corresponding stationary electrical contacts to make an electrical connection. The ultrasound transducer connectors minimize the physical stress exerted upon their electrical contacts, thus avoiding wear and potential damage to the contacts.
In a preferred embodiment, the ultrasound console includes a USB device and USB Driver which is implemented with a FTDI USB245M controller chip, for example. This integrated chip is simple as it can be integrated into the console without requiring a custom device driver. The USB Console uses the FTDI supplied dynamic link library (DLL) device driver in accordance with a preferred embodiment of the present invention.
The console in accordance with a preferred embodiment of the present invention is made up of at least four types of hardware functions: buttons, potentiometers, trackball, and LEDs. The buttons are momentary switches. The architecture in accordance with a preferred embodiment of the present invention allows for 128 buttons. The potentiometers are either linear slide potentiometers for time gain control (TGC), or rotary dials for GAINs. Each potentiometer can have a position reading between 0 and 255. A digital potentiometer with clickers is considered to be a button, not a potentiometer in the preferred embodiments. One embodiment includes 11 potentiometers: 8 slide switches numbered from 0 to 7, for TGC and three rotary dial potentiometers numbered 8 to 10.
In a preferred embodiment, a trackball is a stand-alone unit which communicates with the host system via a PS/2 interface or USB interface. The trackball may go to the host system directly, or combined with the console the USB interface via a USB hub.
In a preferred embodiment, light emitting diodes (LEDs) are provided on the console and can be individually addressed to turn on or off. A preferred embodiment has 8 LEDs, numbered from 0 to 7, and the LEDs are located at the buttons #0 to 7 respectively.
A preferred embodiment includes a software interface protocol from the console to a host system. When a button is pressed or a potentiometer position is changed, a three byte message is sent from the console to the host. Tables 1 and 2 illustrate, respectively, the message sent by using a button and a potentiometer in accordance with a preferred embodiment of the present invention.
The host may send a “Query” command to the console, and the console responds by sending Potentiometer Messages for every potentiometer on the console in accordance with a preferred embodiment of the present invention. Messages can be sent back-to-back in a preferred embodiment.
A preferred embodiment also includes a software interface protocol from a host system to a console. The host can send messages to the console to turn LEDs on/off, or to query the current readings of every potentiometer. Tables 3, 4 and 5 provide the LED-On message, LED-Off message and a query message, respectively, in accordance with a preferred embodiment of the present invention.
An LED is provided on each mode selection key. Once a mode is selected by a user, the selected mode-control key lights up.
The basic module system of the present invention is an external peripheral 16, 26 to a personal computer as shown generally in
The modular system can be structured as a transformable system: a fully portable ultrasound system consisting of the ultrasound module and a notebook computer in a single portable suitcase, and which can be converted into a full feature cart system for stationary use.
The suitcase configuration shown in
As seen in
The cart system 1100 uses a base assembly 1108 and a USB hub 1220. The base assembly can be connected to a docking bay 1222 that receives the processor housing 1000. A preferred embodiment of the docking bay system as seen in
The cart configuration docks the suitcase module 1000 to a cart 1100 with a full operator console 1118. Once docked, the cart and the suitcase together forms a full feature roll-about system 1200 shown in the schematic control circuit diagram of
The user console 1118 on the cart is designed with a USB interface. The electronics on the console gets its power from the USB bus from the battery in housing 100, eliminating the need for an additional power source. However, parts 1211 and 1362 with transformer 1360 and outlets 1324, 1326 can also be used for power distribution and access. The user console is attached to the notebook computer via the USB port of the notebook computer, routed through the docking connector of the suitcase.
An alternate design of the user console 1118 duplicates the cart base console design in a smaller portable console with the same USB interface. This portable console can be plugged into the suitcase without the cart.
With a USB powered console, the cart system can operate solely on the notebook computer battery without the need for being connected to the wall AC power outlet, or, when the cart system is running on wall AC power, it can continue to operate during power outage.
The cart system duplicates many of the notebook computer peripheral ports so that the cart system has as much features as a full blown computer, such as network connection 1203 and printer ports second USB hub 1320 to printer 1340. A VOR, 1350 can receive S Video through docking connections 1205, 1222 from processor 1004. There is also an Svideo port 1207. The first USB hub 1220 is connected via docking parts with the computer USB port and with the second hub 1320. Control elements 1150 can be used to operate the cart system 1200 through hub 1220. The portable system 1000 has one or more connector and beamformer system 1014 with 1394 interface an EKG port 1208, a microphane port 1204, ethernet port 1203, USB port 1202, Svideo port 1207 and power access 1201. The console 1118 has power access 1211, ethernet 1212, USB port 1213, microphane 1216 and EKG port 1214. DC 1302 and USB 1306 connections run from the console to the lower base unit6 1300.
In view of the wide variety of embodiments to which the principles of the present invention can be applied, it should be understood that the illustrated embodiments are exemplary only, and should not be taken as limiting the scope of the present invention. For example, the steps of the flow diagrams may be taken in sequences other than those described, and more or fewer elements may be used in the block diagrams. While various elements of the preferred embodiments have been described as being implemented in software, other embodiments in hardware or firmware implementations may alternatively be used, and vice-versa.
It will be apparent to those of ordinary skill in the art that methods involved in the system and method for determining and controlling contamination may be embodied in a computer program product that includes a computer usable medium. For example, such a computer usable medium can include a readable memory device, such as, a hard drive device, a CD-ROM, a DVD-ROM, or a computer diskette, having computer readable program code segments stored thereon. The computer readable medium can also include a communications or transmission medium, such as, a bus or a communications link, either optical, wired, or wireless having program code segments carried thereon as digital or analog data signals.
The claims should not be read as limited to the described order or elements unless stated to that effect. Therefore, all embodiments that come within the scope and spirit of the following claims and equivalents thereto are claimed as the invention.
Claims
1. An ultrasound imaging system comprising:
- an ultrasound image processor housing having a display and a first docking connector; a base assembly that receives the processor housing, the base assembly having a second docking connector; and a control element on the base assembly that controls an operation of an image processor in the processor housing such that ultrasound image data are displayed on the display.
2. The system of claim 1 further comprising a transducer probe connector on the processor housing.
3. The system of claim 2 wherein the processor further comprises an outer housing having the first docking connector, a computer, the display and beamformer housing.
4. The system of claim 3 wherein the beamformer housing further comprises a plurality of transducer connectors.
5. The system of claim 4 wherein each transducer connector is connected to a transmit and receive circuit.
6. The system of claim 5 wherein each transmit and receive circuit is connected to a digital control circuit and a beamforming circuit.
7. The system of claim 2 wherein the transducer connector includes a housing connector element having a lock assembly.
8. The system of claim 7 wherein the lock assembly comprises a manually activated lever that mates with a catch on a transducer probe connector element.
9. The system of claim 1 further comprising a transducer identification circuit.
10. The system of claim 1 wherein the base assembly further comprises a console, the control element being mounted to the console.
11. The system of claim 1 wherein the base assembly further comprises a first universal serial bus (USB) hub.
12. The system of claim 11 wherein the first USB hub is connect to a printer mounted on the base assembly.
13. The system of claim 10 wherein the console further comprises a second USB hub that is connected to the second docking connector.
14. The system of claim 1 wherein the control element compromises a plurality of controls that control operations of the image processor.
15. The system of claim 3 wherein the beamformer housing includes a beamformer device and a Firewire interface connected to the computer.
16. The system of claim 1 wherein the image processor housing further comprises an ethernet port, a USB port, as video port, a microphone port, an EKG port, and a power source connector.
17. The system of claim 1 wherein the base assembly further comprises a VCR.
18. The system of claim 13 wherein the second USB hub is connected to the control element, a second ethernet port, a second USB port and the first USB hub.
19. The system of claim 2 wherein the transducer probe connector comprises a probe identification circuit.
20. The system of claim 19 wherein the probe identification circuit comprises a radio frequency link to a transducer probe to identify the type of probe transmitting signals to the processor housing.
21. The system of claim 2 wherein the connector has at least 160 pins and a pitch between pins of less than 1 mm.
22. The system of claim 21 wherein the connector has at least 250 pins.
23. The system of claim 21 wherein the pitch between pins is 0.8 mm or less.
24. The system of claim 21 wherein the probe connector comprises an insertion device.
25. The system of claim 24 wherein the insertion device comprises a lever that engages the probe connector.
26. The system of claim 24 wherein the insertion device comprises a lock assembly.
27. The system of claim 25 wherein the lever has a mating surface that mates with a catch on the probe cable connector.
28. The system of claim 1 further comprising a beamformer housing comprising a beamformer, a system controller, a memory, a standard communication interface and a connector that connects the beamformer housing to a transducer probe cable.
29. The system of claim 1 further comprising a plurality of computer programs stored on a computer in the processor housing, the programs including a scan conversion program, a doppler processing program and a transucer identification program.
30. A portable ultrasound imaging system comprising:
- a probe housing including a transducer array;
- a processor housing including a port for receiving ultrasound image data from the probe housing; and
- a probe identification circuit in the housing, the probe identification circuit identifying each of a plurality of probes that can communicate image data to the processor housing.
31. The system of claim 30 further comprising a cable that connects the probe housing to the processor housing with a connector system.
32. The system of claim 31 further comprising a cable connector element and a housing connector element that can be attached with a lock assembly.
33. The system of claim 32 wherein the lock assembly includes a manually actuated lever that is attached to the housing and having a mating surface that mates with a catch on the cable connector element.
34. The system of claim 30 wherein the probe identification circuit comprises an integrated circuit mounted on a connector system assembly in the processor housing.
35. The system of claim 34 wherein the probe identification circuit comprises a one-wire identification circuit.
36. The system of claim 34 wherein the probe identification circuit comprises a programmable, writable and readable memory to store calibration information.
37. The system of claim 30 wherein the processor housing further comprises a display and a control panel.
38. The system of claim 30 wherein the processor housing includes a beamforming circuit, a system controller and an image processor.
39. The system of claim 38 further comprising an analog to digital converter that receives beamformed data and a Firewire interface that delivers converted beamformed data to the image processor.
40. A method of imaging a region of interest with ultrasound energy comprising:
- providing a portable ultrasound imaging system including a transducer array within a handheld probe, a cable interface that is connected to a data processor housing having a data processing system, and a peripheral device inserted into a port of the processor housing, the peripheral device including a connector for the cable interface, a beamforming device and a system controller connected to the beamforming device,
- providing output signals from the data processor to the handheld probe to actuate the transducer array;
- delivering ultrasound energy to the region of interest;
- collecting ultrasound energy returning to the transducer array from the region of interest;
- transmitting data from the handheld probe to the processor housing with the cable interface; and
- performing a beamforming operation with the beamforming device in the peripheral device such that the data processing system receives a beamformed electronic representation of the region of interest from the beamforming device.
41. The method of claim 40 further comprising providing a peripheral device including a Firewire interface.
42. The method of claim 40 further comprising providing a probe identification circuit in the peripheral device.
43. A portable ultrasound system for imaging a region of interest comprising:
- a handheld probe in which a transducer array is mounted; and
- a data processing system within a data processor housing the housing including an electronic device that is connected to the handheld probe with a cable interface, such that the data processing system receives a representation of the region of interest, from the electronic device using a communication interface the electronic device including a programmable beamforming device and a system controller connected to the beamforming device.
44. The system of claim 43 further comprising a Firewire connection between the electronic device and the data processing system.
45. The system of claim 43 further comprising a probe identification circuit.
46. A connector device for a Transducer probe of an ultrasound imaging system comprising: A transducer probe having a cable and a first connector; a circuit housing having a second connector that receives ultrasound image signals from the transducer probe; the second connector having an actuator that engages the first connector.
47. The connector of claim 46 wherein the actuator comprises a lever that moves from a release position to an engage position.
48. The method of claim 43 wherein said gas sampling unit is communicatively coupled to a communications network.
49. The connector of claim 46 wherein the first connector has feature that is engaged by the actuator to move the second connector into the first connector as the actuator moves from a first position to a second position.
50. The connector of claim 46 wherein the connector has at least 160 pins and a pin pitch of less than 1 mm.
51. The connector of claim 50 wherein the connector has at least 250 pins and a pin pitch of 0.8 mm or less.
52. The connector of claim 46 wherein the actuator has a cam element.
53. The connector of claim 46 wherein movement of the actuator from an engage position to a release position disengages the second connector from the first connector.
54. A method of using a connector assembly for an ultrasound system comprising:
- moving a connector actuator from a first position to a second position to engage a housing connector of an ultrasound imaging device with a transducer probe connector.
55. The method of claim 54 further comprising identifying the transducer probe with a probe identification circuit.
56. The method of claim 55 further comprising storing probe identification data in a memory.
57. The method of claim 54 further comprising providing an identification circuit mounted on the housing connector.
58. The method of claim 54 further comprising actuating a computer program that accesses transducer data from a database in accordance with an identified transducer.
59. The mehtod of claim 58 further comprising modifying the transducer data or sending a transducer attach signal to an application program or update a usage history or increment a transducer usage counter or record a transducer detach signal.
60. A method of using a modular ultrasound imaging system comprising;
- Connecting an image processor housing to a base assembly;
- and operating a control element on the base assembly to actuate an ultrasound imaging operation using the image processor housing.
61. The method of claim 60 further comprising providing a base assembly including a cart having a console with a docking port a plurality of control elements to activate display of image data on a display attached to the processor housing
62. The method of claim 60 further comprising providing a processor housing having a laptop personal computer having a standard graphical user interface having a Windows® format, the computer being connected to a beamformer housing within the processor housing using a firewire interface.
63. The method of claim 61 further comprising providing a console having a first USB hub connected to USB port of the processor housing and connected to a second USB hub in the base assembly.
64. The method of claim 60 further comprising providing a plurality of transducer connectors on the processor housing.
65. The method of claim 60 further comprising providing an ethernet port, and Sviseo port, an EKG port and a microphone port
Type: Application
Filed: Nov 24, 2004
Publication Date: Nov 10, 2005
Inventors: William Wong (Milton, MA), Michael Brodsky (Brookline, MA), Alice Chiang (Weston, MA), David Maurer (Stoneham, MA)
Application Number: 10/997,062