Subcutaneous infusion device for injecting medicinal substances

Abstract

A medical delivery device is provided for delivering a medicinal substance into a user's body. A foldable hub has a left wing and a right wing, where the hub is attached at one end to a tube, and at an opposite end to a needle. At least one first rib is disposed on the left wing and at least one second rib is disposed on the right wing. When the wings are folded back away from the needle and pinched together, the first and second ribs prevent twisting and/or sliding of the wings relative to each other during an insertion of the needle into a user's skin, thereby preventing a breakage of the needle due to undesirable movement of the wings.

1 - 16 . (canceled) 
     
     
         17 . A subcutaneous infusion device, comprising:
 a foldable hub having a left wing and a right wing, the hub being configured to receive a tube at a first end, wherein a bottom surface of each of the left wing and right wing is configured to be placed in contact with a user's skin;   a support region disposed at a second end of the hub opposite the first end; and   a needle attached to the hub, wherein the needle includes a first portion and a second portion, wherein the first portion and second portion are connected by a mid-region of the needle, the mid-region being bent at a predetermined radius of curvature, such that the mid-region surrounds the support region.   
     
     
         18 . The infusion device of  claim 17 , wherein the mid-region of the needle is bent at an angle of 45 to 90 degrees, such that the support region buttresses against the bent mid-region of the needle. 
     
     
         19 . (canceled) 
     
     
         20 . The infusion device of  claim 17 , wherein the second portion of the needle includes a sharp end of the needle extending outwardly from the mid-region of the needle so that the sharp end of the needle is disposed transverse to a longitudinal axis of the hub. 
     
     
         21 . The infusion device of  claim 20 , wherein the sharp end is perpendicular to the longitudinal axis of the hub, and wherein the second portion is straight. 
     
     
         22 . The infusion device of  claim 17 , wherein the bottom surface of each of the left wing and right wing includes a rib configured to be placed in contact with the user's skin to prevent unwanted movement of the hub during use. 
     
     
         23 . The infusion device of  claim 17 , wherein the hub terminates at the first portion of the needle. 
     
     
         24 . The infusion device of  claim 17 , wherein the hub is configured to receive the tube approximately halfway into a longitudinal length of a center section of the infusion device, wherein the center section includes the hub and the support region. 
     
     
         25 . The infusion device of  claim 17 , wherein the needle extends through the second end of the hub. 
     
     
         26 . A subcutaneous infusion device, comprising:
 a foldable hub having a left wing and a right wing, the hub being configured to receive a tube at a first end;   a support region disposed at a second end of the hub opposite the first end; and   a needle attached to the hub, wherein the needle includes a first portion and a second portion, the second portion including a sharp end of the needle, wherein the first portion and second portion are connected by a mid-region of the needle, the mid-region being bent at a predetermined radius of curvature, such that the mid-region surrounds the support region, and wherein the hub terminates at the first portion of the needle.   
     
     
         27 . The infusion device of  claim 26 , wherein the mid-region of the needle is bent at an angle of 45 to 90 degrees, such that the support region buttresses against the bent mid-region of the needle. 
     
     
         28 . The infusion device of  claim 26 , wherein the second portion of the needle includes a sharp end of the needle extending outwardly from the mid-region of the needle so that the sharp end of the needle is disposed transverse to a longitudinal axis of the hub. 
     
     
         29 . The infusion device of  claim 28 , wherein the sharp end is perpendicular to the longitudinal axis of the hub, and wherein the second portion is straight. 
     
     
         30 . The infusion device of  claim 26 , wherein a bottom surface of each of the left wing and right wing includes a rib configured to be placed in contact with the user's skin to prevent unwanted movement of the hub during use. 
     
     
         31 . The infusion device of  claim 26 , wherein the hub is configured to receive the tube approximately halfway into a longitudinal length of a center section of the infusion device, wherein the center section includes the hub and the support region. 
     
     
         32 . A subcutaneous infusion device, comprising:
 a center section including:
 a foldable hub having a left wing and a right wing, and 
 a support region disposed at a second end of the hub opposite the first end; 
   a tube inserted into a first end of the hub approximately halfway into a longitudinal length of the center section; and   a needle attached to the hub, wherein the needle includes a first portion and a second portion, wherein the first portion and second portion are connected by a mid-region of the needle, the mid-region being bent at a predetermined radius of curvature, such that the mid-region surrounds the support region.   
     
     
         33 . The infusion device of  claim 32 , wherein the mid-region of the needle is bent at an angle of 45 to 90 degrees, such that the support region buttresses against the bent mid-region of the needle. 
     
     
         34 . The infusion device of  claim 32 , wherein the second portion of the needle includes a sharp end of the needle extending outwardly from the mid-region of the needle so that the sharp end of the needle is disposed transverse to a longitudinal axis of the hub. 
     
     
         35 . The infusion device of  claim 34 , wherein the sharp end is perpendicular to the longitudinal axis of the hub, and wherein the second portion is straight. 
     
     
         36 . The infusion device of  claim 32 , wherein a bottom surface of each of the left wing and right wing includes a rib configured to be placed in contact with the user's skin to prevent unwanted movement of the hub during use. 
     
     
         37 . The infusion device of  claim 32 , wherein first portion and mid-region of the needle have a longitudinal length approximately half the length of the center section. 
     
     
         38 . The infusion device of  claim 32 , wherein the first end includes a first insertion opening accommodating the tube, and wherein the second end includes a second insertion opening accommodating the first portion of the needle.