Protective dressing for skin-placed medical device

• US 10,456,497 B2
• Filed: 09/10/2015
• Issued: 10/29/2019
• Est. Priority Date: 09/10/2014
• Status: Active Grant

• Current Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Original Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Inventors: Howell, Glade H., Christian, Kelly J., Bown, Matthew W.
• Primary Examiner(s): Lewis, Kim M
• Application Number:
  US14/850,825
• Publication Number:
  US 20160067106A1
• Time in Patent Office: 1,510 Days
• Field of Search: 604180, 128888, 128889
• CPC Class Codes: A61F 13/0203 with fluid retention members
• CPC Class Codes: A61F 15/008 Appliances for wound protecting, e.g. avoiding contact between wound and bandage corn plasters A61F13/063
• CPC Class Codes: A61F 2013/00412 for use with needles, tubes or catheters
• CPC Class Codes: A61F 2013/00829 rigid or semi-rigid backing
• CPC Class Codes: A61L 15/26 Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof A61L15/225 takes precedence
• CPC Class Codes: A61M 25/02 Holding devices, e.g. on the body
• CPC Class Codes: C08L 75/04 Polyurethanes

Abstract

A dressing for use in protectively covering and isolating a medical device placed on and/or through the skin surface of a patient is disclosed. Examples of such devices include infusion needles for accessing subcutaneously implanted access ports, catheters of various types and purposes, insulin infusion needles, etc. In one embodiment, a dressing for covering a medical device on a skin surface of a patient is disclosed and comprises a dressing portion that is configured to rest against a skin surface of a patient, with the dressing portion defining a hole, and a polymeric cover film that is at least indirectly attached to the dressing portion. The cover film includes a pliable domed portion aligned with the hole of the dressing portion. The pliable domed portion defines a cavity that is configured to receive therein the medical device when the dressing is placed on the skin of the patient.

Claims

1. A dressing for covering a medical device on a skin surface of a patient, comprising:

a dressing portion configured to rest against the skin surface of the patient, the dressing portion defining a hole;

a polymeric cover film permanently attached to the dressing portion, the polymeric cover film including a pliable domed portion aligned with the hole of the dressing portion, the pliable domed portion defining a cavity configured to receive therein the medical device when the dressing is placed on the skin surface of the patient; and

a support frame removably attached to the polymeric cover film to provide rigidity during placement of the dressing on the patient, the support frame including a cutout portion enabling a securement component to be attached to the cover film without removal of the support frame, the securement component removably disposed on a top surface of the support frame before use.

2. The dressing as defined in claim 1, wherein the domed portion is collapsible to enable placement of the dressing in a substantially flat package.

3. The dressing as defined in claim 2, wherein the dome portion is formed via a thermal forming process using a mold.

4. The dressing as defined in claim 3, wherein heat from the thermal forming process is directed through the hole defined in the dressing so as to impinge on the cover film.

5. The dressing as defined in claim 4, wherein the dressing portion includes non-woven polyester and wherein the cover film includes a thermoplastic polyurethane.

6. The dressing as defined in claim 5, further comprising a release liner removably attached to a bottom surface of the dressing portion, the release liner defining a hole aligned with the hole of the dressing portion.

7. The dressing as defined in claim 6, wherein the release liner provides heat shielding for the dressing portion and the cover film during the thermal forming process, and wherein the dome portion prevents tenting of the dressing when the dressing is placed over the medical device on the skin surface of the patient.

8. The dressing as defined in claim 1, wherein the securement component includes a tube securement assembly for securing tubing of the medical device covered by the dressing.

9. The dressing as defined in claim 1, wherein the domed portion is substantially teardrop-shaped.

10. The dressing as defined in claim 1, wherein the cover film includes a thickness proximate an outer perimeter thereof of 2.25 mils, and wherein the domed portion includes a thickness of from 0.65 mil to 1 mil.

11. The dressing as defined in claim 1, wherein the medical device includes an infusion needle assembly.

12. The dressing as defined in claim 11, wherein the cover film and the dressing portion include aligned notches to enable tubing of the medical device to exit the dressing, and wherein a securement component including a notch is placed over the tubing in alignment with the notches of the cover film and the dressing portion.

13. A method of manufacturing a dressing for covering a medical device on a skin surface, the method comprising:

providing a dressing portion defining a hole;

attaching a polymeric cover film to the dressing portion;

forming a pliable domed portion in the polymeric cover film after the polymeric cover film is attached to the dressing portion to align a perimeter of the domed portion with the hole defined in the dressing portion;

removably attaching a release liner to a bottom surface of the dressing portion;

removably attaching a support frame to a top surface of the polymeric cover film;

removably attaching a tube securement assembly to a support portion of the support frame, the support portion including at least one cutout portion to enable a user to easily remove the tube securement assembly from the support frame, the at least one cutout portion disposed inward from an outer perimeter of the support frame.

14. The method of manufacturing as defined in claim 13, wherein attaching the cover film includes attaching the cover film to the dressing portion using an acrylic adhesive.

15. The method of manufacturing as defined in claim 13, wherein forming the pliable domed portion includes thermally forming the pliable domed portion.

16. The method of manufacturing as defined in claim 15, wherein thermally forming the pliable domed portion further comprises:

applying a vacuum to force a portion of the cover film into proximity with a mold; and

applying heat to the cover film while the portion of the cover film is in proximity with the mold such that the domed portion is formed.

17. A dressing for covering a medical device on a skin surface of a patient, comprising:

a release layer;

a dressing portion removably attached to the release layer, the dressing portion configured to rest against the skin surface of the patient, the dressing portion defining a hole having an outer perimeter;

a polymeric cover film attached to the dressing portion, the polymeric cover film including a pliable domed portion having a shape corresponding to the outer perimeter of the hole of the dressing portion, the pliable domed portion defining a cavity configured to receive therein the medical device when the dressing is placed on the skin surface of the patient;

a support frame removably attached to the polymeric cover film configured to provide rigidity to the dressing; and

a securement component removably attached to the support frame, the securement component configured to secure a portion of the medical device, wherein the support frame includes a gap configured to enable the securement component to be removed from the support frame and attached to the polymeric cover film without removing the support frame from the polymeric cover film.

18. The dressing as defined in claim 17, further comprising a tape strip that is removably attached to the support frame.

19. The dressing as defined in claim 18, wherein a slit is included on the support frame beneath the tape strip to enable the tape strip to be readily removed from the support frame.

20. The dressing as defined in claim 17, further comprising a date/time strip that is removably attached to the support frame.

21. The dressing as defined in claim 20, wherein a hole is defined by the support frame proximate the date/time strip to enable the date/time strip to be manually grasped by a user.

22. The dressing as defined in claim 17, wherein the domed portion includes a predetermined moisture vapor transfer rate to enable moisture to escape from the domed portion.

23. The dressing as defined in claim 17, wherein the securement component comprises a tube securement assembly including a dressing portion, a cover film portion, and a removable support frame portion, the tube securement assembly configured to secure tubing of the medical device at an exit point from the dressing.

24. The dressing as defined in claim 17, wherein the polymeric cover film includes a thermoplastic polyurethane including a thickness of from 1.5 mils to 2.5 mils.

25. The dressing as defined in claim 17, wherein the domed portion is transparent and wherein the domed portion includes at least one reinforcement feature configured to provide strength to the domed portion.