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Motorized Patch-Clamp Micromanipulators![]()
PCS-6300CR Application Idea Custom Motorized Micromanipulators Mounted on PCS-500-SSH Steep/Shallow Related Items ![]() Please Wait
Features
Thorlabs' Motorized Micromanipulators offer excellent control of pipette manipulation for electrophysiology and life sciences research. These micromanipulators use a combination of stepper motors and piezoelectric (PZT) control of translation stages to provide smooth and precise movement of the pipette head. When combined with our Gibraltar® Platforms, these micromanipulators achieve unparalleled stability and control. We also offer Manual Patch-Clamp Micromanipulators with piezoelectric translation. We offer motorized right-handed micromanipulators in a cultured configuration (see image to the right). This configuration provides control over the 3 cardinal directions (X, Y, and Z), which is ideal for patching cells. Translation along the X- and Y-axes positions the pipette over the cell of interest and then the Z translation brings the pipette down to patch clamp a cell. Two adjustable stop rings enable the user to set an approach angle and rotational orientation for fast alignment during pipette swapping (see the Micromanipulator tab for more information). We also offer left-handed cultured micromanipulators, as well as traditional left- and right-handed micromanipulators, as custom options; please the Custom Options tab for more details. The micromanipulator can move along three different axes. Coarse translation is controlled using a stepper motor that produces a displacement up to 25 mm at a 1.6 µm minimum step size. These electrically quiet motors utilize specially shielded cables, an internal ground skeleton, and a grounding pin to eliminate noise and interference. Fine control on the micromanipulators is achieved with piezoelectric flexure mounts that provide a displacement of either 150 µm or 300 µm along each axis. These motorized micromanipulators use a joystick to control the stepper motor translation. Additionally, the user is able to store up to two independent positions in memory. Pushing a button on the joystick recalls the stored position, allowing the user to quickly and easily move between two predetermined positions on the micromanipulator. Adapters for positioning a headstage or pipette at steep or shallow approach angles can be purchased separately below. These adapters allow for more experimental flexibility and minimize mechanical clashing with microscopy objectives or other experimental apparatus. A close-approach headstage and pipette adapter is also available that allows pipettes and headstages to be positioned closer to a sample without interference from the micromanipulator. Piezoelectric Control ![]() Click to Enlarge Traditional Configurations are available as custom options. Please see Custom Options tab for more details. ![]() Click to Enlarge Right-Handed, Cultured Configurations are available from stock. (Left-Handed configurations are available as custom options. Please see Custom Options tab.) ![]() Click to Enlarge Micromanipulator Assembly Micromanipulator AssemblyThorlabs' Micromanipulator Assembly is composed of three linear translation stages, two rotary stages with lockable stops, one set of angle brackets, and headstage mounting plate. The cross roller bearings of this assembly form a stiff and precise single-axis bearing system with high load capacity and minimal friction. The PZT actuators yield 60 nm resolution, virtually no heating, zero backlash, and negligible drift (<1 µm/hr). The headstage mounting plate easily accommodates headstages and pipettes. Note that while many headstages may be directly bolted to the headstage mounting plate, other headstages may be mounted to the mounting plate by adding the appropriate mounting holes. The headstage pivot allows for simple optimization of the pipette angle of approach on either an inverted or upright microscope. Additionally, the Adjustable Stop Ring![]() Click to Enlarge Adjustable Stop Ring with Pin and Brass Block with Locking Thumbscrew These micromanipulators include two adjustable stop rings that allow a user to repeatedly and accurately set the approach angle and horizontal rotational orientation (see image to the left). Once an appropriate angle or rotation is established, tighten the thumbscrew on the brass block to lock the mount in position. Loosen the two setscrews on either side of the pin using a 0.05" (1.3 mm) balldriver or hex key. Rotate the ring until the protruding pin is in physical contact with the brass block. To lock the ring, tighten the exposed setscrew, then loosen the thumbscrew to allow the mount to rotate freely. Axis Control UnitThe axis control unit allows the user to adjust pipette placement by hand with smooth and repeatable movement through control of the piezo flexure mount. Each of the three stages that comprise our micromanipulator assembly can connect to one of the potentiometer knobs on the axis control unit. For convenience during system configuration, the user may choose any knob to control any particular stage. This allows the user to set the axis control unit in the most intuitive configuration for the system. Each knob controls a three-turn potentiometer, which regulates voltage to the piezo flexure assembly and thus its position. Three turns correspond to the full travel range of the piezo assembly, yielding a resolution that is 0.04% of the total piezo travel range. For example, a 150 µm piezo travel stage will have a 60 nm resolution provided by the axis control unit. Additionally, the user may set the potentiometer friction to suit experimental needs. ![]() Click to Enlarge Joystick Joystick ControllerControl of the stepper motors is accomplished through the use of the included joystick. The joystick offers analog control allowing the motorized assembly speed to be controlled continuously between 0.5 nm/s to 2 mm/s and offers a minimum step size of 1.6 µm. Joystick control allows the user to store up to two independent positions in memory and gives simple push button recall to said positions. This allows the user to quickly and reliably switch between two preset positions. Power SupplyOur micromanipulator power supply provides a regulated, low noise, 60 V output for the axis control unit. Two voltage outputs enable the power supply to regulate two axis control units. This allows the user to run two micromanipulation assemblies from the same power source, saving both money and space. This power supply accepts an input power range of 100 - 240 V at 50 - 60 Hz. Custom Options for Motorized MicromanipulatorsIn addition to the motorized micromanipulators available from stock, traditional and left-handed cultured configurations are available as custom options. The cultured configuration provides control over the 3 cardinal directions (X, Y, and Z), which is ideal for patching cells. Translation along the X- and Y-axes positions the pipette over the cell of interest and then the Z translation brings the pipette down to patch clamp a cell. For applications such as brain slice work, we offer the traditional configuration. In these applications, control over the Y, Z, and approach axis is preferred. Please see the table below for more details on each custom option. We also offer Manual Micromanipulators that are available in stock or as custom options.
For questions and ordering details, please contact Tech Support.
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Please Note: For other configurations, please see the Custom Options tab. ![]() ![]() Click to Enlarge The PCS-500-SSH can be mounted for steep (left) or shallow (right) approach angles.
These adapters for the micromanipulator assemblies provide a flexible platform for mounting a headstage or pipette; see the table below for details. Each adapter alows the mounted headstage or pipette to be positioned at steep or shallow approach angles. Steep approach angles are often desired in electrophysiology experiments in order to minimize the length of the electrode in solution, ensuring that electrical noise is kept to a minimum. In contrast, slice electrophysiology experiments often use electrodes positioned nearly parallel (15° to 25° angle) to the experimental surface to allow the pipette tip to be moved in a straight line over the sample chamber. Shallow approach angles also enable users to stack multiple pipettes or headstages in close proximity. In both these cases, extra clearance for steep or shallow approach angles is needed to prevent interference with the microscope or other experimental apparatus. ![]() Click to Enlarge PCS-500-SSH Headstage Adapter Components Steep/Shallow Headstage Adapter The mounting plate provides two possible dovetail grooves for securing the slide. For shallow approach angles, the slide is placed within the lower dovetail bracket, while for steep approach angles, the slide is placed in the upper dovetail bracket (see the image above to the right). Mounting in this manner provides maximum clearance above the micromanipulator when it is rotated for a steep angle approach. To install the adapter, attach the mounting plate to the micromanipulator using the included 4-40 screws (3/32" hex). Secure the slide assembly in one of the dovetail grooves by installing the clamping plate with the included 2-56 cap screws and 5/64" (2 mm) hex key. The user can loosen the clamping plate and position the entire slide assembly; this determines the stop locations that correspond to the fully extended and fully retracted positions of the pipette. At least 1" of the slide assembly should be held by the clamping plate to ensure stability of the mount. To adjust the slide position, turn the locking handle to loosen, then move the slide to the desired location, and retighten the locking handle. ![]() Click for Details The PCS-AXN-ADP Close-Approach Adapter Secured to a Micromanipulator ![]() Click to Enlarge MIS-PHM Pipette Holder Mount Secured to Micromanipulator Close Approach Headstage Adapter It is attached to the micromanipulator using the headstage adapter plate included with the micromanipulator and the included 2-56 cap screws and 5/64" (2 mm) hex key. When mounted to this adapter, the PCS-AXN-ADP will be offset from the micromanipulator body, allowing it to be used in closer proximity to the experiment while reducing mechanical clashing. Please see the manual for detailed mounting instructions. A single dovetail groove is provided to hold a headstage or pipette mount. The groove is the same width as the other headstage adapters, making it compatible with the headstage adapter plate included with the PCS-500-SSH and the pipette mount included with the MIS-PHM. Pipette Holder Mount For users who have an older pipette holder, please contact Tech Support for information on replacement options.
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