IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0760200
(2014-01-17)
|
등록번호 |
US-10034989
(2018-07-31)
|
우선권정보 |
GB-1301192.9 (2013-01-23) |
국제출원번호 |
PCT/GB2014/050132
(2014-01-17)
|
국제공개번호 |
WO2014/114916
(2014-07-31)
|
발명자
/ 주소 |
- Wilson, Peter
- Meliniotis, Andreas
|
출원인 / 주소 |
- VECTURA DELIVERY DEVICES LIMITED
|
대리인 / 주소 |
Davidson, Davidson & Kappel, LLP
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
20 |
초록
▼
A blister piercing element for puncturing the lid of a blister containing a dose of medicament for inhalation by a user is disclosed. It comprises a body having a surface and an opening in the surface for the passage of air, or for the passage of medicament entrained in air, through the body. The bo
A blister piercing element for puncturing the lid of a blister containing a dose of medicament for inhalation by a user is disclosed. It comprises a body having a surface and an opening in the surface for the passage of air, or for the passage of medicament entrained in air, through the body. The body includes a pair of spaced cutting teeth upstanding from the surface in spaced side-by-side relation, each cutting tooth projecting in cantilevered form over said opening and each having a distal cutting edge at a free end remote from said surface. The distal cutting edge of each tooth is configured to initiate a slit in a blister lid when pressure is applied to a blister lid by the teeth and the teeth are spaced from each other so that separate slits cut by the distal cutting edge of each tooth propagate in a direction toward each other between the teeth as the teeth continue to penetrate a blister lid. The pair of spaced cutting teeth form a single slit in a blister lid that defines a single flap which is folded into the blister by the teeth.
대표청구항
▼
1. A blister piercing element for puncturing the lid of a blister containing a dose of medicament for inhalation by a user, comprising a body having a surface and an opening in the surface for the passage of air, or for the passage of medicament entrained in air, through the body, wherein the body i
1. A blister piercing element for puncturing the lid of a blister containing a dose of medicament for inhalation by a user, comprising a body having a surface and an opening in the surface for the passage of air, or for the passage of medicament entrained in air, through the body, wherein the body includes a pair of spaced cutting teeth upstanding from the surface in spaced side-by-side relation, each cutting tooth projecting in cantilevered form over said opening, each tooth comprising an upright portion extending from the surface adjacent to, or from, a periphery of the opening and a cantilevered portion that extends from an upper end of the upright portion and projects out over said opening, each tooth having a distal cutting edge at a free end remote from said surface, each tooth further comprising an apex that lies on the distal cutting edge and which is configured for initially puncturing a blister lid, said distal cutting edge extending away from the apex of each tooth in two different directions and at an angle towards the surface, wherein a first part of the distal cutting edge of each tooth extends from the apex in a direction toward the apex of the other tooth and a second part of the distal cutting edge of each tooth extends from the apex in a direction away from the other tooth, a secondary cutting edge extending from the apex of each tooth along the cantilevered portion towards the upright portion, the distal cutting edge of each tooth being configured to initiate an initial slit in the blister lid initially punctured by the apex of each tooth and the secondary cutting edge configured to cut an initial slit in a direction extending away from the apex along the cantilevered portion towards the edge of the blister lid from which the tooth upstands when pressure is applied to the blister lid by the teeth, the teeth being spaced from each other so that the separate initial slits cut by the distal cutting edge of each tooth propagate in a direction toward each other between the teeth as the teeth continue to penetrate the blister lid, said pair of spaced cutting teeth thereby forming a single continuous slit when said initial slits are joined up as the teeth penetrate further through the blister lid, thereby defining a single flap which is folded into the blister by the teeth. 2. A blister piercing element according to claim 1, wherein the teeth are symmetrical about a plane extending between the teeth, which is perpendicular to the surface. 3. A blister piercing element according to claim 2, wherein the opening has first and second opposite edges and the teeth upstand from the surface adjacent to the first edge and project in cantilevered form in a direction towards the second edge to an extent that the distal cutting edge is closer to the second edge than to the first edge. 4. A blister piercing element according to claim 1, wherein it is the first distal cutting edge part of each tooth that is configured such that the initial slits cut by the distal cutting edge of each tooth propagate toward each other as the teeth penetrate a blister lid to form said single continuous slit extending between the apex of each tooth. 5. A blister piercing element according to claim 4, wherein said first distal cutting edge part of each tooth is configured so that the slit extending between the apex of each tooth is linear. 6. A blister piercing element according to claim 1, wherein the secondary cutting edge extends from the apex at an angle towards the surface. 7. A blister piercing element according to claim 1, wherein the secondary cutting edges of respective teeth extend at an angle away from each other. 8. A blister piercing element according to claim 1, wherein each tooth has a first angled facet bound by said first part of the distal cutting edge extending from the apex of a tooth towards the other tooth, and its secondary cutting edge. 9. A blister piercing element according to claim 8, wherein each tooth has a second angled facet bound by said second part of the distal cutting edge extending from the apex of a tooth in a direction away from the other tooth, and its secondary cutting edge. 10. A blister piercing element according to claim 1, wherein the first part of the distal cutting edge of each tooth extends from the apex towards said surface at an angle which is smaller than the angle at which the second part of the distal cutting edge of each tooth extends from the apex towards said surface, said angle being defined with respect to a direction defined by the intersection of a plane parallel to the surface with a plane perpendicular to the surface and comprising said first/second part of the distal cutting edge. 11. A blister piercing element according to claim 1, wherein the opening in the surface comprises a first opening and the pair of spaced cutting teeth comprise a first pair of spaced cutting teeth, the body comprising a second opening in the surface, a second pair of spaced cutting teeth upstanding from the surface in spaced side-by-side relation, each cutting tooth projecting in cantilevered form over said second opening, each tooth comprising an upright portion extending from the surface adjacent to, or from, a periphery of the second opening and a cantilevered portion that extends from an upper end of the upright portion and projects out over said second opening, each tooth having a distal cutting edge at a free end remote from said surface, each tooth further comprising an apex that lies on the distal cutting edge and which is configured for initially puncturing a blister lid, said distal cutting edge extending away from the apex of each tooth in two different directions and at an angle towards the surface, wherein a first part of the distal cutting edge of each tooth extends from the apex in a direction toward the apex of the other tooth and a second part of the distal cutting edge of each tooth extends from the apex in a direction away from the other tooth, a secondary cutting edge extending from the apex of each tooth along the cantilevered portion towards the upright portion, the distal cutting edge of each second tooth being configured to initiate an initial slit in the blister lid initially punctured by the apex of each tooth and the secondary cutting edge configured to cut an initial slit in a direction extending away from the apex along the cantilevered portion towards the edge of the blister lid from which the tooth up stands when pressure is applied to the blister lid by the second teeth at the same time pressure is applied to the blister lid by the first teeth, the second teeth being spaced from each other so that an initial slit cut by the distal cutting edge of each second tooth propagates in a direction toward each other between the second teeth as the second teeth continue to enter the blister so that a single continuous slit is formed when said initial slits are joined up in the blister lid by said second pair of spaced cutting teeth to define a single flap that is folded into the blister by the second teeth. 12. A blister piercing element according to claim 11, wherein the first and second pairs of spaced cutting teeth are positioned in back-to-back relation so that the first pair of spaced cutting teeth project in cantilevered form over the first opening in an opposite direction to the direction in which the second pair of spaced cutting teeth project in cantilevered form over the second opening. 13. A blister piercing element according to claim 12, wherein the body has a flow channel extending from the second opening to direct drug laden air that has passed through the second opening into a mouthpiece of a dry powder inhalation device. 14. An inhalation device having a blister piercing element according to claim 1.
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