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Figure 5: Designs of three-dimensional printed applicator. (a) Patent specific vaginal applicator.[93] (b) Tandem with three-dimensional printed needle cap.[91] (c) Multichannel vaginal cylinder with interstitial needle.[92] (d) Tandem and ring with parallel and oblique needles

Figure 5: Designs of three-dimensional printed applicator. (a) Patent specific vaginal applicator.<sup>[93]</sup> (b) Tandem with three-dimensional printed needle cap.<sup>[91]</sup> (c) Multichannel vaginal cylinder with interstitial needle.<sup>[92]</sup> (d) Tandem and ring with parallel and oblique needles