After reading the site extensively I did some searching through my
university library's journal article database. I came across the
following citation and abstract.

"Title:
Ultrasound as a new method of male contraception.
Author(s):
Fahim MS; Fahim Z; Harman J; Thompson I; Montie J; Hall DG
Source:
Fertility And Sterility [Fertil Steril] 1977 Aug; Vol. 28 (8), pp.
823-31.
Publication Type:
Journal Article
Language:
English
Journal Information:
Country of Publication: UNITED STATES NLM ID: 0372772 Publication
Model: Print Cited Medium: Print ISSN: 0015-0282 (Print) NLM ISO
Abbreviation: Fertil. Steril. Subsets: MEDLINE
MeSH Terms:
Ultrasonics*
Contraception/*methods
Animals; Cats; Dogs; Haplorhini; Humans; Male; Rats; Seminiferous
Tubules/pathology; Spermatogenesis; Temperature
Abstract:
Twenty male cats were treated once or twice with 1 watt/sq cm of
ultrasound for 10 minutes. Each of 24 male dogs received one to three
treatments with 1 watt/sq cm for 10 minutes. Another six dogs were
treated with 2 watts/sq cm for 15 minutes. Four Cebus apella monkeys
were treated with the same dosage as that used for the cats and dogs.
A dosage of 1 watt/sq cm for 10 minutes was also applied to four human
patients without the use of anesthetics, and no pain or side effects
were noted. In all treated animals as well as in human patients the
results indicate that ultrasound significantly suppresses
spermatogenesis according to the dosage and frequency of treatment,
without any effect on Leydig cells or blood testosterone levels.
Contributed Indexing:
Indexing Agency: PIP Local ID #: 772012. Indexing Agency: POP
Local ID #: 00040593.
Keywords: Animals, Laboratory*; Antibodies--analysis*; Biology;
Clinical Research; Contraception; Contraception Research*;
Evaluation*; Family Planning; Genitalia; Germ Cells; Human
Volunteers*; Immunity; Immunoglobulin Alterations; Immunologic
Factors; Male Contraception*; Physiology; Research Methodology;
Spermatozoa*; Ultrasonics*; Urogenital System
Local Abstract: [PIP] Ultrasound was tested as a method of
sterilization in cats, dogs, monkeys, and humans, utilizing an
ultrasound machine manufactured by Whitewater Electronics specifically
for this research. 30 male cats were divided into 3 groups, 2
experimental and 1 control. The treated groups received 1 watt/sq cm
for 10 minutes once, or a 2nd time after 48 hours. Testicular biopsies
were made 60 days after treatment. 24 male dogs were divided into 3
groups receiving either 1,2, or 3 treatments within a 1-week interval
with 1 watt/sq cm for 10 minutes. Sperm counts were made for 5
consecutive weeks preceding ultrasound treatment and semen analyses
made weekly. 6 dogs were treated with 2 watts/sq cm for 15 minutes.
Antibodies to spermatozoa were determined by the Kibrick method. 4
South African monkeys were treated with 1 watt/sq cm for 10 minutes;
testicular biopsies were obtained 1 month before treatment and 60 days
after treatment. 1 watt/sq cm for 10 minutes. Testicular biopsies were
obtained 3 weeks before treatment and orchiectomies were performed 14
-17 days after treatment. In all treated animals and human patients,
ultrasound significantly suppresses spermatogenesis accoridng to the
dosage and frequency of treatment, without any effect on Leydig cells
or blood testosterone levels.
Entry Date(s):
Date Created: 19770929 Date Completed: 19770929 Latest Revision:
20041117
Update Code:
20071207
PMID:
407106
"


I'm waiting to receive the article via interlibrary loan.

I didn't see this method of contraception examined in any previous
posts, and was wondering if anyone has followed up on this research?