"because of Hamas actions of using UN schools and some hospitals as military sites, is has become impossible to send urgent sensitive medical equipment to treat Palestinians"
Oh you are a gem 
It has been impossible to send medical equipment and supplies to Palestinians because of Israel's border blockade.
If you dare open your eyes to reality one day, try reading some news.
“At this moment there are people who are buried under the rubble. There are people who are bleeding in various areas in the Gaza strip,” he said.
“Most of these people, if not all, are civilians and they [MEDICS] are not allowed to go forward for a few hundred metres to collect them to safety and to hospital.
“We want to insist that this kind of attack on civilians, on houses, on hospitals, on ambulances and other facilities are serious violations of international law.”
Earlier this week, the Doctors Without Borders (Medecins Sans Frontieres) organisation said it witnessed several attacks on medical personnel by Israeli forces.
“These are real people and real children; 43 per cent of the population in Gaza are kids. Over 700 are dead now and half of them are children. It’s infanticide.”
From here.
"In an unprecedented criticism of the Israeli siege of Gaza, a senior official in the Médecins Sans Frontières (MSF) humanitarian charity has described his organisation’s work among the 1.8 million besieged Palestinian refugees as akin to being “in an open-air prison to patch up prisoners in between their torture sessions”. Jonathan Whittall, head of humanitarian analysis at MSF, who worked in Libya during the 2011 war, in Bahrain during the uprising of the same year, in Syria, Afghanistan, Pakistan, South Sudan and Darfur, has bluntly asked his colleagues: “At what point does MSF’s repeated medical action in an unacceptable situation [like Gaza] become complicity with aggression and oppression?”
“ An entire population is trapped in what is essentially an open-air prison ,” Mr Whittall writes. “They can’t leave and only the most limited supplies – essential for basic survival – are allowed to enter. The population of the prison have elected representatives and organised social services. Some of the prisoners have organised into armed groups and resist their indefinite detention by firing rockets over the prison wall. However, the prison guards are the ones who have the capacity to launch large-scale and highly destructive attacks on the open-air prison.”
In a comparison which is also certain to infuriate Israel, Mr Whittall, who is based in Beirut, says that the limitations of humanitarian groups in Gaza are not unique. “In 2012,” he writes, “MSF closed its projects in the prisons of Misrata, Libya. Our doctors were outraged to be in a position where we were providing treatment to patients who were being tortured by state authorities. At the time, MSF spoke out strongly: ‘Our role is to provide medical care to war casualties and sick detainees, not repeatedly to treat the same patients between torture sessions’ .”
From here.