JPWO2020257398A5

JPWO2020257398A5 -

Info

Publication number: JPWO2020257398A5
Application number: JP2021575349A
Authority: JP
Publication date: 2023-07-28

Claims

a hub having a distal end and an open proximal end for attachment to a delivery device;
a needle coupled to the hub and having a distal end extending from the distal end of the hub and a proximal end extending from the proximal end of the hub;
a removable inner shield coupled to the hub, having a sidewall having an inner surface complementary to the outer surface of the hub, and a distal end of the outer surface of the hub for covering the distal end of the needle; an inner shield configured to couple to and having an outer surface dimensioned to couple to the inner surface of the open proximal end of the hub to cover the proximal end of the needle;
an outer cover sized to receive the hub and inner shield;
The hub has a sidewall having an inner surface including threads configured to couple to a drug delivery device, and a plurality of ribs extending longitudinally relative to the hub and projecting radially outward. having an outer surface,
The outer cover has a sidewall having an inner surface with a plurality of ribs projecting radially inwardly, the ribs of the outer cover urging the hub into the delivery pen upon rotation of the outer cover in a first direction. configured to engage corresponding ribs on the hub to connect and separate the hub from the delivery device upon rotation of the outer cover in a second direction;
said ribs on said outer cover project radially inwardly and have inclined leading surfaces oriented in planes inclined with respect to the longitudinal axis of said outer cover;
The pen needle, wherein the slanted leading surface is further oriented in a plane at an slanted angle to the radius of the outer cover .

2. The pen needle of claim 1, wherein the outer surface dimensions of the inner shield complement the inner dimensions of the open proximal end of the hub.

3. The pen needle of claim 2, wherein the inner shield is coupled to the inner surface of the open proximal end of the hub by a friction fit.

The side wall of the inner shield includes at least one detent projecting radially outwardly from the side wall , the at least one detent engaging the inner surface of the hub to provide the proximal end of the hub. 4. The pen needle of claim 3, holding the inner shield at the posterior end.

2. A pen needle according to claim 1 , wherein said rib of said hub has an inclined leading surface and an inclined trailing surface with respect to the longitudinal axis and radius of said hub.

a hub having a distal end and an open proximal end for attachment to a delivery device;
a needle coupled to the hub and having a distal end extending from the distal end of the hub and a proximal end extending from the proximal end of the hub;
a removable inner shield coupled to the hub, having a sidewall having an inner surface complementary to the outer surface of the hub, and a distal end of the outer surface of the hub for covering the distal end of the needle; an inner shield configured to couple to and having an outer surface dimensioned to couple to the inner surface of the open proximal end of the hub to cover the proximal end of the needle;
an outer cover sized to receive the hub and inner shield;
The hub has a sidewall having an inner surface including threads configured to couple to a drug delivery device, and a plurality of ribs extending longitudinally relative to the hub and projecting radially outward. having an outer surface,
The outer cover has a sidewall having an inner surface with a plurality of ribs projecting radially inwardly, the ribs of the outer cover urging the hub into the delivery pen upon rotation of the outer cover in a first direction. configured to engage corresponding ribs on the hub to connect and separate the hub from the delivery device upon rotation of the outer cover in a second direction;
The rib on the hub has a leading surface that is angled with respect to the longitudinal axis and with a radius of the hub, the rib on the hub being substantially parallel to the radius of the hub. 6. The pen needle of claim 5, having a trailing surface oriented in a plane parallel to the longitudinal axis of the hub.

7. The pen needle of claim 6 , wherein the ribs on the hub have outer radial surfaces oriented obliquely with respect to the outer radial surface of the hub.

8. The pen needle of claim 7 , wherein the trailing surface has a radial dimension that is greater than the radial dimension of the leading surface.

The pen needle according to claim 8 , wherein said ribs of said outer cover have a rounded convex shape.

2. The pen needle of claim 1 , further comprising a closure coupled to said open end of said outer cover, said closure cap having a tamper evident member.

11. The pen needle of claim 10 , wherein the closure includes an end wall, an annular sidewall having an inner dimension for mating with the open end of the outer cover, and a tab extending from the annular sidewall.

12. The pen needle of claim 11 , wherein said annular sidewall of said closure has a frangible portion for separating said annular sidewall from said end wall.

12. The pen needle of claim 11 , wherein said annular sidewall has a bottom attached to said end wall and a removable portion formed by a frangible portion between said bottom and said removable portion.

14. The pen needle of claim 13 , wherein the base is joined to the outer cover by a hinge.

14. The pen needle of claim 13 , wherein the bottom of the annular sidewall has an inwardly extending flange for engaging an outwardly extending flange on the outer cover.

2. The pen needle of claim 1 , wherein the sidewall of the hub has a flexible portion that can flex radially outward to separate the hub from the threaded end of the delivery device.

17. The pen needle of claim 16 , wherein said sidewall has a longitudinally extending slot to define said flexible portion.

17. A pen according to claim 16 , wherein the outer cover has an inwardly extending projection that engages the proximal end of the flexible portion to help separate the hub from the delivery device. needle.

The side wall of the removable inner shield has a side wall having an inner dimension for coupling to the distal end of the hub and surrounding the distal end of the needle, the inner shield forming a closed distal end. 2. The pen needle of claim 1 , having a proximal end and an open proximal end.

The sidewall of the inner shield has outer dimensions that complement the inner dimensions of the open proximal end of the hub, and the inner shield is secured to the needle by a friction fit to cover the proximal end of the needle. 20. A pen needle according to claim 19 , capable of being bonded to the inner surface of said sidewall of the hub.

7. The pen needle of claim 6, wherein the dimensions of the outer surface of the inner shield complement the inner dimensions of the open proximal end of the hub.

22. The pen needle of claim 21, wherein the inner shield is coupled to the inner surface of the open proximal end of the hub by a friction fit.

The sidewall of the inner shield includes at least one detent projecting outwardly from the sidewall, the at least one detent engaging the inner surface of the hub to engage the proximal end of the hub. 23. The pen needle of Claim 22, which retains the inner shield.

7. The pen needle of claim 6, further comprising a closure coupled to said open end of said outer cover, said closure cap having a tamper evident member.

23. The pen needle of claim 22, wherein the closure includes an end wall, an annular sidewall having an inner dimension for mating with the open end of the outer cover, and a tab extending from the annular sidewall.

26. The pen needle of Claim 25, wherein the annular sidewall of the closure has a frangible portion for separating the annular sidewall from the end wall.

26. The pen needle of claim 25, wherein said annular sidewall has a bottom attached to said end wall and a removable portion formed by a frangible portion between said bottom and said removable portion.

28. The pen needle of claim 27, wherein said base is joined to said outer cover by a hinge.

28. The pen needle of claim 27, wherein the bottom of the annular sidewall has an inwardly extending flange for engaging an outwardly extending flange on the outer cover.

7. The pen needle of claim 6, wherein the sidewall of the hub has a flexible portion that can flex radially outward to separate the hub from the threaded end of the delivery device.

31. The pen needle of claim 30, wherein said sidewall has a longitudinally extending slot to define said flexible portion.

31. A pen according to claim 30, wherein the outer cover has inwardly extending projections to engage the proximal end of the flexible portion to help separate the hub from the delivery device. needle.

The side wall of the removable inner shield has a side wall having an inner dimension for coupling to the distal end of the hub and surrounding the distal end of the needle, the inner shield forming a closed distal end. 7. The pen needle of claim 6, having a proximal end and an open proximal end.

The sidewall of the inner shield has outer dimensions that complement the inner dimensions of the open proximal end of the hub, and the inner shield is secured to the needle by a friction fit to cover the proximal end of the needle. 34. A pen needle according to claim 33, capable of being bonded to the inner surface of said sidewall of the hub.