Assembly features and methods for a peel-and-place dressing for use with negative-pressure treatment
Dressings for tissue treatment with negative pressure and methods of assembling the dressings for tissue treatment with negative pressure are disclosed. A method of assembling a dressing, which may comprise at least three layers assembled in a stacked relationship, may comprise providing an assembly station having at least one retaining pin, placing a first layer on the assembly station, placing a second layer on the assembly station, and bonding the second layer to the first layer. The first layer may comprise a plurality of apertures, at least some of which may be engaged by the retaining pins, and the second layer may comprise fluid restrictions and alignment areas for engaging with the retaining pins so that the fluid restrictions may be aligned with the apertures of the third layer.
1. A method of assembling a composite dressing, the method comprising:
providing an assembly station having a plurality of retaining pins;
placing a first layer having a plurality of apertures on the assembly station;
engaging the plurality of retaining pins with at least some of the apertures to retain the first layer in at least one plane;
placing a second layer having a plurality of fluid restrictions on the assembly station, wherein the second layer comprises at least one alignment area;
engaging the at least one alignment area with at least one of the plurality of retaining pins so that at least some of the fluid restrictions are centrally aligned with at least some of the apertures; and
bonding the second layer to the first layer.
2. The method of claim 1 , wherein:
the first layer comprises a central area and a peripheral area;
apertures in the peripheral area are larger than apertures in the central area; and
engaging the plurality of retaining pins with at least some of the apertures comprises engaging the plurality of retaining pins with apertures in the peripheral area.
3. The method of claim 1 , wherein the fluid restrictions comprise a plurality of slots, each of the slots having a length less than 4 millimeters and a width less than 2 millimeters.
4. The method of claim 1 , wherein the fluid restrictions comprise a plurality of slots, each of the slots having a length in a range of 2 millimeters to 4 millimeters and a width in a range of 0.5 millimeters to 2 millimeters.
5. The method of claim 1 , wherein:
the first layer comprises a central area and a peripheral area;
apertures in the peripheral area are larger than apertures in the central area;
the apertures in the central area have a diameter of about 2 millimeters;
engaging the plurality of retaining pins with at least some of the apertures comprises engaging the plurality of retaining pins with apertures in the peripheral area; and
the fluid restrictions comprise a plurality of slots, each of the slots having a length in a range of 2 millimeters to 4 millimeters and a width in a range of 0.5 millimeters to 2 millimeters.
6. The method of claim 1 , wherein:
the assembly station has at least four retaining pins;
engaging the plurality of retaining pins with at least some of the apertures comprises inserting the retaining pins through at least some of the apertures;
the at least one alignment area comprises a plurality of appendages on the second layer; and
engaging the at least one alignment area with the retaining pins comprises positioning each of the plurality of appendages in contact with two of the retaining pins to retain the second layer in at least one plane.
7. The method of claim 1 , wherein:
the assembly station has at least four retaining pins;
engaging the plurality of retaining pins with at least some of the apertures comprises inserting the retaining pins through at least some of the apertures;
the at least one alignment area comprises a plurality of appendages on the second layer; and
engaging the at least one alignment area with the retaining pins comprises positioning each of the plurality of appendages in contact with a solid area of the first layer and in contact with two of the retaining pins to retain the second layer in at least one plane.
8. The method of claim 1 , wherein:
the assembly station has at least two retaining pins;
engaging the retaining pins with at least some of the apertures comprises inserting the retaining pins through at least some of the apertures;
the at least one alignment area comprises alignment apertures; and
engaging the at least one alignment area with the retaining pins comprises inserting at least two of the retaining pins through the alignment apertures.
9. The method of claim 1 , wherein:
the first layer has a first registration aperture;
the second layer has a second registration aperture; and
placing the second layer on the assembly station comprises aligning the first registration aperture with the second registration aperture.
10. The method of claim 1 , wherein the first layer comprises a gel.
11. The method of claim 1 , wherein the second layer comprises a polymer film.
12. The method of claim 1 , wherein:
the first layer comprises a gel; and
the second layer comprises a polymer film.
13. The method of claim 1 , wherein:
the first layer comprises a silicone gel; and
the second layer comprises a polyethylene film.
14. The method of claim 1 , wherein at least one of the plurality of retaining pins comprises a laser configured to detect a first feature of the first layer and a second feature of the second layer.