Insertion device
View Patent ↗An insertion device includes an insertion needle holder and a drive mechanism for linearly moving the insertion needle holder in a puncturing direction. The insertion needle holder also includes at least one actuating element for actuating a drive mechanism. The drive mechanism converts a driving motion of the actuating element, which extends transversely or opposite to the puncturing direction, into a puncturing motion of the insertion needle holder.
1. An insertion device comprising:
an insertion needle holder,
a drive mechanism for linearly moving the insertion needle holder in a puncturing direction, wherein the drive mechanism includes a rotor and a connecting rod, wherein the rotor includes a toothed wheel and wherein the connecting rod is coupled to the rotor at the first end of the connecting rod, the connecting rod further extending from the first end to an opposite second end that is coupled to the insertion needle holder, and
at least one gripping arm extending transversely or opposite to the puncturing direction that is coupled in meshed relationship to the toothed wheel of the rotor so that movement of the at least one gripping arm sets the rotor of the drive mechanism in motion, wherein the drive mechanism converts a driving motion of the at least one gripping arm into a rotary motion of the rotor and the rotary motion of the rotor is converted into a linear motion of the connecting rod which moves the insertion needle holder in the puncturing direction, wherein the at least one gripping arm and the drive mechanism are configured so that movement of the insertion needle holder in the puncturing direction occurs during the driving motion of the at least one gripping arm and wherein the drive mechanism converts the driving motion of the at least one gripping arm into retraction motion of the insertion needle holder immediately after the puncturing motion.
2. The insertion device according to claim 1 , wherein the drive mechanism does not include an energy accumulator.
3. The insertion device according to claim 1 , wherein the drive motion of the at least one gripping arm is a swiveling motion.
4. The insertion device according to claim 1 , wherein the at least one gripping arm includes a rack.
5. The insertion device according to claim 1 , wherein the drive mechanism is disposed in a housing, out of which the at least one gripping arm extends.
6. The insertion device according to claim 1 , wherein two gripping arms are diametrically opposed.
7. The insertion device according to claim 6 , wherein the two gripping arms move in the opposite direction when a puncturing motion occurs.
8. The insertion device according to claim 6 , wherein the two gripping arms move toward one another when a puncturing motion occurs.
9. The insertion device according to claim 1 , further comprising a linear guide for the insertion needle holder.
10. The insertion device according to claim 1 , further comprising a crank connecting the first end of the connecting rod to the rotor, wherein the crank converts the rotary motion of the rotor into the linear motion of the connecting rod.
11. An insertion system comprising:
an insertion device including:
an insertion needle holder;
a drive mechanism for linearly moving the insertion needle holder in a puncturing direction, wherein the drive mechanism includes a rotor and a connecting rod, wherein the rotor includes a toothed wheel and wherein the connecting rod is coupled to the rotor at a first end of the connecting rod, the connecting rod further extending from the first end to an opposite second end that is coupled to the insertion needle holder;
at least one gripping arm extending transversely or opposite to the puncturing direction that is coupled in meshed relationship to the toothed wheel of the rotor so that movement of the at least one gripping arm sets the rotor of the drive mechanism in motion, wherein the drive mechanism converts a driving motion of the at least one gripping arm into a rotary motion of the rotor and the rotary motion of the rotor is converted into a linear motion of the connecting rod which moves the insertion needle holder in the puncturing direction, wherein the at least one gripping arm and the drive mechanism are configured so that the movement of the insertion needle holder in the puncturing direction occurs during the driving motion of the at least one gripping arm; and
a sensor holder, wherein the insertion device comprises a coupling mechanism that, for insertion, holds the sensor holder against the insertion device and is actuated by the drive mechanism at the end of an insertion procedure to detach the sensor holder from the insertion device,
wherein the drive mechanism converts the driving motion of the at least one gripping arm into retraction motion of the insertion needle holder immediately after the puncturing motion.
12. The insertion system according to claim 11 , further comprising a crank connecting the first end of the connecting rod to the rotor, wherein the crank converts the rotary motion of the rotor into the linear motion of the connecting rod.
13. An insertion device comprising:
an insertion needle holder,
a drive mechanism for linearly moving the insertion needle holder in a puncturing direction, wherein the drive mechanism includes a rotor and a connecting rod, wherein the rotor includes a toothed wheel and wherein the connecting rod is coupled to the rotor at a first end of the connecting rod, wherein the drive mechanism does not include an energy accumulator, the connecting rod further extending from the first end to an opposite second end that is coupled to the insertion needle holder, and
at least one gripping arm extending transversely or opposite to the puncturing direction that is coupled in meshed relationship to the toothed wheel of the rotor to drive the rotor of the drive mechanism, wherein the drive mechanism converts a driving motion of the at least one gripping arm into a rotary motion of the rotor and the rotary motion of the rotor is converted into a linear motion of the connecting rod which moves the insertion needle holder in the puncturing direction, wherein the at least one gripping arm and the drive mechanism are configured so that movement of the insertion needle holder in the puncturing direction occurs during the driving motion of the at least one gripping arm; and
wherein the drive mechanism converts the driving motion of the at least one gripping arm into retraction motion of the insertion needle holder immediately after the puncturing motion.