Medical Device with Transcutaneous Cannula Device
First Claim
1. A medical device, comprising:
- a lower surface (603) adapted for application towards the skin of a subject,a transcutaneous fluid transport device having a distal end portion (652) adapted to be arranged through the skin of the subject and having a distal fluid outlet, and a fluid inlet portion in fluid communication with the distal end portion, the fluid transport device comprising an insertion needle (661) and a cannula (651) disposed on, or in, and being axially moveable relative to the insertion needle, the insertion needle comprising a distal end (662) adapted to penetrate the skin of the subject, and a fluid inlet (663) arranged proximally from the cannula, the cannula forming the distal end portion, a seal (655) being provided between the cannula and the insertion needle allowing fluid to be transported from the fluid inlet to the distal fluid outlet,wherein the fluid transport device has;
an initial state in which the cannula and the insertion needle are retracted relative to the lower surface, the fluid inlet being arranged at an initial position,an intermediate state in which the cannula and the insertion needle are extended relative to the lower surface with the distal end of the insertion needle projecting relative to the distal end of the cannula thereby allowing the fluid transport device to be introduced through the skin of the subject, andan extended state in which the cannula extends relative to the lower surface with the distal end of the insertion needle being retracted relative to the distal end of the cannula, the fluid inlet being arranged at a retracted position proximally of the initial position,thereby allowing the fluid inlet to be connected to a fluid supply (690) when it is moved from its initial to its retracted position.
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Accused Products
Abstract
The present invention generally relates to the insertion of a transcutaneous device of the type comprising a cannula (651) and a therein moveably arranged insertion needle (661), as well as the connecting of such a transcutaneous device with a fluid supply. Thus, a device is provided comprising an insertion needle and a cannula disposed on and being axially moveable relative to the insertion needle, the insertion needle comprising a proximal fluid inlet, a seal (655) being provided between the cannula and the insertion needle allowing fluid to be transported from the fluid inlet to the distal fluid outlet, wherein the insertion needle after having been used to insert the cannula is arranged at a retracted position proximally of the initial position, thereby allowing the fluid inlet to be connected to a fluid supply when it is moved from its initial to its retracted position.
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Citations
13 Claims
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1. A medical device, comprising:
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a lower surface (603) adapted for application towards the skin of a subject, a transcutaneous fluid transport device having a distal end portion (652) adapted to be arranged through the skin of the subject and having a distal fluid outlet, and a fluid inlet portion in fluid communication with the distal end portion, the fluid transport device comprising an insertion needle (661) and a cannula (651) disposed on, or in, and being axially moveable relative to the insertion needle, the insertion needle comprising a distal end (662) adapted to penetrate the skin of the subject, and a fluid inlet (663) arranged proximally from the cannula, the cannula forming the distal end portion, a seal (655) being provided between the cannula and the insertion needle allowing fluid to be transported from the fluid inlet to the distal fluid outlet, wherein the fluid transport device has; an initial state in which the cannula and the insertion needle are retracted relative to the lower surface, the fluid inlet being arranged at an initial position, an intermediate state in which the cannula and the insertion needle are extended relative to the lower surface with the distal end of the insertion needle projecting relative to the distal end of the cannula thereby allowing the fluid transport device to be introduced through the skin of the subject, and an extended state in which the cannula extends relative to the lower surface with the distal end of the insertion needle being retracted relative to the distal end of the cannula, the fluid inlet being arranged at a retracted position proximally of the initial position, thereby allowing the fluid inlet to be connected to a fluid supply (690) when it is moved from its initial to its retracted position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A medical device, comprising:
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a lower surface (503, 603) adapted for application towards the skin of a subject, a transcutaneous fluid transport device having a distal end portion adapted to be arranged through the skin of the subject and having a distal fluid outlet, and a fluid inlet portion in fluid communication with the distal end portion, the fluid transport device comprising an insertion needle (561, 661) and a cannula (551, 651) disposed on and being axially moveable relative to the insertion needle, the insertion needle comprising a pointed distal end, the cannula forming the distal end portion, wherein the fluid transport device has; an initial state in which the cannula and the insertion needle are retracted relative to the lower surface, an actuated state in which the cannula and the insertion needle are extended relative to the lower surface with the distal end of the insertion needle projecting from a distal opening in the cannula thereby allowing the fluid transport device to be introduced through the skin of the subject, an extended state in which the cannula extends relative to the lower surface with the distal end of the insertion needle being retracted from the distal opening in the cannula, and a retracted state in which the cannula and the insertion needle are retracted relative to the lower surface.
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11. A method comprising the steps of:
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providing a medical device having a housing with a lower surface, a reservoir, and a transcutaneous fluid transport device comprising a hollow insertion needle (561, 661) and a cannula (551, 651) disposed on and being axially moveable relative to the insertion needle, the insertion needle comprising a proximal end and a pointed distal end, actuating the transcutaneous fluid transport device from an initial state in which the cannula and the insertion needle are retracted relative to the lower surface, to an intermediate state in which the cannula and the insertion needle are extended relative to the lower surface with the distal end of the insertion needle projecting relative to the distal end of the cannula thereby allowing the fluid transport device to be introduced through the skin of the subject, and further to an extended state in which the cannula extends relative to the lower surface with the distal end of the insertion needle being retracted relative to the distal end of the cannula, and retracting the insertion needle to a position proximal of the initial position to thereby connect the insertion needle with the reservoir. - View Dependent Claims (12, 13)
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Specification