 Medically , condoms can be used to cover endovaginal ultrasound probes , or in field chest needle decompressions they can be used to make a one @-@ way valve . 
 Medically , condoms can be used to cover endovaginal ultrasound probes , or in field chest needle decompressions they can be used to make a one @-@ way valve . 
Medically , condoms can be used to cover endovaginal ultrasound probes , or in field chest needle decompressions they can be used to make a one @-@ way valve .