Jet Injector and “No-Needle” Vasectomy
Q: I’ve heard of practitioners who are performing a “no-needle”
no-scalpel vasectomy using your Jet injection device. You offer
many different types of jet injectors. Which injector is most commonly used
to perform this new type of vasectomy and why?
A:
No-Needle No-Scalpel Vasectomy (NNNSV) is a relatively new procedure and one
for which a firm standard is just now being established. One or more
academic papers on the NNNSV are due to appear in 2005, so more information
will soon be available on this topic.
Two
of our units, the 2500 “Podiatry” Jet Injector the 2400 “Standard Medical”
Jet Injector and have been used successfully to perform thousands of
vasectomies in the United States, Canada, England, India, and other
countries, with superb patient results.
Basic Equipment
Configurations
Based on several years’ experience with NNNSV vasectomist clients, here is
what seem to be the most popular equipment configurations for vasectomy:
1. 2500
Podiatry Jet Injector Kit (Set to a pressure of 6 Footpounds) with Injector
and Accessories
2. 2404-075 Extra Sheaths for Extended Tip
 
The Most Common Basic Equipment Configuration for
No-Needle NSV
 
The Next Most Common Basic Equipment Configuration for
No-Needle NSV
Choosing an Injector
for Vasectomy
The 2500 is our “Podiatry” Jet
Injector. Podiatry is just its name because it was originally developed for
podiatric use. However, vasectomists have told us that the Straight Head
Assembly and standard pressure setting of 6 foot-pounds of the 2500 unit
have proven very well-suited to vasectomy.
Straight or Angled Head
Several practitioner clients are also performing vasectomy quite well using
the 2400 Medical Jet Injector unit. One key difference between the 2500 and
the 2400 is the shape of the Head Assembly. The Podiatry unit has a straight
head assembly and the 2400 Medical unit has an angled one. Choosing a
straight or angled head is mostly an issue of physician preference, though
the straight-headed unit may offer some speed and handling advantage since
no matter how it is held or rolled in the hand, the angle of approach is
consistent.
Pressure Setting
The
other key difference between the 2500 and the 2400 is the standard pressure
setting. The Podiatry unit is generally set to 5 to 6 foot-pounds of
pressure; the Medical unit to 4 or 4.5 foot-pounds. However, both units can
be adjusted to a setting of 6 foot-pounds.
Whether one chooses a straight or angled unit, the experience of most
practitioners seems to show that the injector works best for vasectomy when
set to the highest possible pressure setting of 6. With this setting,
Vasectomists have told us that it is extremely rare to have to "top up"
anesthesia following jet injection using needle and syringe. There are
exceptions to this. Anecdotal information from India is that a setting of 6
may be more than is needed for a male population that tends to have very low
body fat. For all other countries where the Jet Injector has been used for
vasectomy, however, a setting of 6 seems to be superior.
IMPORTANT: If you plan to perform other in-office procedures with your
Jet Injector unit, make sure that the pressure settings of your Jet Injector are
appropriate for the other procedures. If not, you will need a separate
Jet Injector unit set to the appropriate pressure settings. Most
in-office procedures are best done with a 4 to 4.5 foot-pounds injection
pressure. Dental procedures generally require much less, only 2 to 2.5
foot-pounds. The units are NOT user-adjustable because the springs used must
be selected and calibrated.
Tip Sheaths and
Other Accessories
The
extra sheaths of the two configurations shown above are not absolutely
necessary. However, practitioners have said that extra sheaths make it
easier to perform multiple procedures one after another without sterilizing
the unit. One simply changes sheaths, dips or soaks the tip of the unit in
the included bactericide, and goes on the next patient.
In
addition to the sheaths, many accessories for the Jet Injector are available,
including Extended Tips of various lengths, stylets for unclogging the
nozzle, replacement pyrex chambers, bactericide refills, and other items.
Please see our full Jet Injector Accessories section for details.
Maintenance and
Backup Equipment
Our
injectors are great devices, but they do require regular maintenance-- once
per year inspection and maintenance is prudent (cost = < US$100 + domestic
or international shipping to and from New York.). The parts that need the
greatest care are the Extended Tips and Head Assemblies.
Since repair can take several weeks if anything breaks or needs adjustment,
we recommend purchasing some kind of backup equipment; at a minimum:
EITHER
Extended Tip (2403-075 Extra Extended Tip with Sheath)
OR
Entire Head Assembly, which includes the Extended Tip (Straight Head
Assembly Product # 2502 or Angled Head Assembly Product # 2402).
It
is also possible to purchase this backup equipment in advance by simply
purchasing a straight-headed unit with an extra Straight Head Assembly
(Product # 2501) or an angled-headed unit with an extra Angled Head Assembly
(Product # 2401). |
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