초록 ▼

A skin retention device 10 for a medical jet-injection unit 20 having a contact face provided with adhesive 12 in the area surrounding and close to the injection opening(s) 11 of the nozzle 21 which ensures good contact between the nozzle 21 and the skin 30 of a subject in the area chosen for an inj

A skin retention device 10 for a medical jet-injection unit 20 having a contact face provided with adhesive 12 in the area surrounding and close to the injection opening(s) 11 of the nozzle 21 which ensures good contact between the nozzle 21 and the skin 30 of a subject in the area chosen for an injection. The injection force can be lowered dramatically. In case of two-stage jet-injections, the initial injection force can be lowered because the skin retention close to the injection point significantly reduces the energy consuming elastic expansion of the skin 30 in the injection area, and the second injection force can be lowered because of the high degree of fixed positioning of the injection opening of the nozzle 21 relative to the injection channel in the skin 30 made during the initial injection stage.

대표청구항 ▼

1. Skin retention device (10) for a medical jet-injection unit (20) comprising a contact face provided with adhesive (12) to be applied in contact with the skin (30) of a subject prior to an injection, said contact face further being provided with at least one injection opening (11), wherein the adh

1. Skin retention device (10) for a medical jet-injection unit (20) comprising a contact face provided with adhesive (12) to be applied in contact with the skin (30) of a subject prior to an injection, said contact face further being provided with at least one injection opening (11), wherein the adhesive (12) substantially surrounds the injection opening(s) (11) in the proximity of the opening(s), such that skin retention against the contact face close to the injection opening(s) (11) is ensured, the energy required for the jet beam (25) to penetrate the skin (30) is limited and exact fixation of a jet beam (25) over the injection point throughout the injection period is ensured, wherein the adhesive (12) substantially surrounds the injection opening(s) (11) in a diameter (13) smaller than 3 mm. 2. The skin retention device (10) according to claim 1, wherein the adhesive (12) substantially surrounds the injection opening(s) (11) in a diameter (13) smaller than 0.8 mm. 3. The skin retention device (10) according to claim 1, wherein the adhesive (12) substantially surrounds the injection opening(s) (11) in a diameter (13) smaller than 0.6 mm. 4. The skin retention device (10) according to claim 1 wherein the contact face has a convex shape. 5. The skin retention device (10) according to claim 1 wherein the retention device (10) comprising a contact face is an integrated part of the jet-injection unit (20). 6. The skin retention device (10) according to claim 1, wherein the jet-injection nozzle (21) and the contact face is manufactured in one piece, whereby the contact face is a part of the nozzle (21). 7. The skin retention device (10) according to claim 1, wherein the contact face has a cone shaped geometry providing an even stretch of the skin (30) radial outwards from the injection opening(s) (11) and providing lift of the skin (30) away from the subject without any force performed by the subject, once the skin retention device (10) has been applied in contact with the skin (30).