Confused about @Inject

I'm really confused about the @Inject in Java. I've read about CDI in the Java EE tutorial, and I still don't get it. Would you take a look at my code and tell me what I'm doing wrong?

package model.businessLayer;
import java.util.List;
import javax.inject.Named;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import model.domainLayer.RADplusUserSupplemental;

@Named(value = "staffLocal")
public class StaffCaseloadMgr implements StaffCaseloadMgrLocal {

    @PersistenceContext(unitName = "CareTeamPersist")
    EntityManager em;

    public StaffCaseloadMgr() {}

    /**
     * Returns the list of user supplemental records from the database,
     * based on the patid passed in to staff caseload.
     * @param patid The patient, or consumer ID
     * @return List of RADplusUserSupplemental records
     */
    public List<RADplusUserSupplemental> getListForEmails(String patid) {
        return em.createNamedQuery("StaffCaseload.findEmails",
            RADplusUserSupplemental.class)
            .getResultList();
    }
}

I put the constructor in there, thinking it might help. I'm not sure why it would, though, seeing as how it's the default constructor. Okay, next.

package utils;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.enterprise.context.SessionScoped;
import javax.inject.Inject;
import model.businessLayer.StaffCaseloadMgr;
import model.domainLayer.RADplusUserSupplemental;

@SessionScoped
public class CareTeam implements Serializable {

    private static final long serialVersionUID = 1L;

    @Inject
    static StaffCaseloadMgr staffLocal;

    /**
     * This is a static method that retrieves the care team given a particular
     * consumer ID.
     * 
     * @param consumerID
     *            The consumer ID for which to get the care team
     * 
     * @return A list of emails for the care team
     */
    public static List<Map<String, String>> getCareTeamEmails(String consumerID) {

        List<Map<String, String>> arrayList = new ArrayList<Map<String, String>>();
        for (RADplusUserSupplemental userSupp : staffLocal
                .getListForEmails(consumerID)) {
            Map<String, String> emailMap = new HashMap<String, String>();
            emailMap.put("staffEmail", userSupp.getOrganizationEmailAddress());
            arrayList.add(emailMap);
        }
        return arrayList;
    }

}

I'm using Maven, so I put an empty beans.xml in resources/META-INF. I'm very confused about why it's not working. Can you help?