1. An inserter for a port assembly, comprising
a housing assembly including a housing having a bore and a latch;
a port driver slidably mounted in the bore and including a seat for receiving the port assembly and a socket;
a cannula insertion member in the socket and inseparable from the socket;
a spring operatively between the housing and the port driver, the latch being selectively engageable with the port driver with the spring in a stressed state, the housing further having a mount in the bore, the latch being held by the mount from moving toward the port driver, the spring being operatively between the mount and the port driver.
2. The inserter of claim 1, the latch including hooks, a first position with the hooks engaged with the port driver and a second position with the hooks disengaged from the port driver.
3. The inserter of claim 2, the first and second positions being angularly displaced.
4. An inserter for a port assembly, comprising
a housing assembly including a housing having a bore and a latch;
a port driver slidably mounted in the bore and including a seat for receiving the port assembly and a socket;
a cannula insertion member in the socket and inseparable from the socket;
a spring operatively between the housing and the port driver, the latch being selectively engageable with the port driver with the spring in a stressed state, the housing further including a stop at the end of the bore proximate the seat extending to limit sliding motion of the port driver and not to limit motion of the port assembly positioned on the seat.
5. The inserter of claim 1 further comprising
a cover on the latch, the cover being removable from the latch and lockable in the end of the bore proximally the port driver, the cover including a container for the cannula insertion member.
6. The inserter of claim 5, the container having a skew side deflecting the cannula insertion member rigidly fixed in the socket with the container locked in the end of the bore.
7. The inserter of claim 1, the socket for rigidly fixing the cannula insertion member to the driver including a bonding agent therein.
8. An inserter for a port, comprising
a cannula insertion member;
a housing assembly including a housing having a bore, a latch and a socket for slidably retaining the cannula insertion member;
a port driver slidably mounted in the bore and including a seat for receiving a port;
a spring operatively between the housing and the port driver, the latch being held axially relative to the housing and selectively engageable with the port driver with the spring in a stressed state, the socket further releasably retaining the cannula insertion member, the socket having a passageway with an open end proximate the seat and a shoulder extending into the passageway at the open end;
a retainer on the port driver to engage the port assembly with minimal release force.
9. The inserter of claim 8, the socket for releasably retaining the cannula insertion member being split along the passageway.
10. The inserter of claim 8, the retainer having a minimal interference fit with the port assembly.
11. The inserter of claim 10, the retainer being a circular ring on the seat.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A step motor comprising:
a rotor; and
two stators installed around the rotor, each stator having a different number of magnetic poles in order to generate different step angles.
2. The step motor of claim 1 further comprising a partition device installed between the two stators for preventing electromagnetic induction generated between the two stators.
3. The step motor of claim 1 further comprising a first control circuit and a second control circuit for respectively controlling current transmitted to each of the two stators.
4. The step motor of claim 1 wherein phases of the two stators match, and the two stators are capable of sequentially conducting electricity so as to sequentially induce the rotor to rotate.
5. The step motor of claim 1 wherein phases of the two stators do not match.
6. The step motor of claim 1 being a permanent magnetic motor.
7. The step motor of claim 1 being used to drive a module element of an electronic device.
8. The step motor of claim 7 wherein the electronic device is a scanner and the module element is a scanning module.
9. The step motor of claim 7 wherein the electronic device is a printer.