Abstract
A medical fluid pump, such as an infusion pump or syringe pump, includes a printed circuit board equipped with control devices of the medical fluid pump. The control device can include at least the control device of a motor of the medical fluid pump. The medical fluid pump also includes a wireless communication module in the form of a communication circuit board. The communication circuit board is arranged substantially perpendicular or orthogonally to the printed circuit board.
Claims
1. A medical fluid pump comprising: a motor; a printed circuit board having a control device of the motor; and a wireless communication module comprising a communication circuit board, the communication circuit board being arranged substantially perpendicular to the printed circuit board.
2. The medical fluid pump according to claim 1, wherein the communication circuit board is enclosed by a cage that is metallic or contains metallic elements.
3. The medical fluid pump according to claim 2, wherein the cage is connected to the communication circuit board at individual, spaced-apart points.
4. The medical fluid pump according to claim 2, wherein the cage is firmly bonded to the communication circuit board at a first point and a second point, and wherein the cage is force-fitted to the communication circuit board at a third point and a fourth point.
5. The medical fluid pump according to claim 4, wherein the cage is firmly bonded to the first point and the second point by soldering, and wherein the cage is force-fitted to the third point and the fourth point by clamping.
6. The medical fluid pump according to claim 2, wherein the cage is connected to a ground potential of the printed circuit board.
7. The medical fluid pump according to claim 1, wherein the communication circuit board is connected to a plurality of antennas.
8. The medical fluid pump according to claim 7, wherein the plurality of antennas are arranged orthogonally to each other.
9. The medical fluid pump according to claim 7, wherein the plurality of antennas are connected to the communication circuit board via cables, each cable having a cable length, wherein the cable lengths are identical.
10. The medical fluid pump according to claim 7, wherein the plurality of antennas are spaced from each other by a distance corresponding to a multiple of a quarter wavelength of a transmission frequency of the plurality of antennas.
11. The medical fluid pump according to claim 1, wherein the communication circuit board is thermally coupled to the printed circuit board.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0038] FIG. 1 is an interior view of a medical fluid pump according to the invention.
[0039] FIG. 2 is an enlarged representation of a section of the interior view of the medical fluid pump according to the invention with a wireless communication module in the form of a communication circuit board.
[0040] FIG. 3 is a further enlarged representation of a section of the interior view of the medical fluid pump according to the invention with the wireless communication module in the form of the communication circuit board and a first antenna.
[0041] FIG. 4 is another enlarged view of a section of the interior view of the medical fluid pump according to the invention with a second antenna.
DETAILED DESCRIPTION
[0042] FIG. 1 shows an internal view of a medical fluid pump 2 according to the invention, comprising a substantially rectangular housing 4, drive components 5, and a front flap 6 attached to a front side of the housing 4 of the medical fluid pump 2, which is connected via a connecting cable 7. The medical fluid pump 2 includes in the housing 4, a printed circuit board/main board 8, which is equipped with the substantial control devices of the medical fluid pump 2, namely at least with the control device of a motor of the medical fluid pump 2, and a wireless communication module in the form of a communication circuit board 10. The communication circuit board 10 is arranged substantially perpendicularly or orthogonally to the printed circuit board 8. In other words, a narrow side of the communication circuit board 10 contacts the surface of the printed circuit board 8. The communication circuit board 10 is arranged substantially centrally with respect to a width direction of the housing 4. The communication circuit board 10 is enclosed by a metallic shield cage 12. The communication circuit board 10 is connected to antennas 16, 26 via cables 14. The antennas 16, 26 are each arranged on side walls of the housing 4 of the medical fluid pump 2. A distance between the antennas 16, 26 to each other is a multiple of a quarter or a half wavelength of the transmission frequency of the antennas 16, 26.
[0043] FIG. 2 shows the communication circuit board 10 in the shield cage 12 on the printed circuit board 8. The shield cage 12 encloses the communication circuit board 10 from six sides and prevents electromagnetic fields or radiation from influencing or interfering with the function of the communication circuit board 10. The shield cage 12 is made of sheet metal. The shield cage 12 has three feet 17, each of which is provided with a clearance hole 18. The shield cage 12 is connected to the printed circuit board 8 through the clearance holes 18 via screws 20. By providing three feet 17, the shield cage 12 is fixed in a statically determined manner. The shield cage 12 has a first port opening (not shown) on the side facing the printed circuit board 8. Through the first port opening, the communication circuit board 10 is connected to the printed circuit board 8 via a printed circuit board connector. Furthermore, the shield cage 12 has a second port opening 21 in a side surface of the shield cage 12 oriented orthogonally to the printed circuit board 8. Through the second port opening 21, the cables 14 connecting the communication circuit board 10 to the antennas 16 are connected to the communication circuit board 10. The shield cage 12 furthermore includes ventilation slits 22 that improve an air exchange between an interior of the shield cage 12 and an interior space of the housing 4 of the medical fluid pump, such that a buildup of warm air in the shield cage 12 is prevented. In two corner portions of the shielding cage 12 facing away from the printed circuit board 8 in an assembled state, clamping elements 25 are configured, which connect the shielding cage 12 to the communication circuit board 10 in a force-fit manner. In two corner sections of the shielding cage 12 facing the printed circuit board 8 in an assembled state, the shielding cage 12 is connected to the communication circuit board 10 in a firmly bonded manner.
[0044] FIG. 3 shows the communication circuit board 10 in the shield cage 12 on the printed circuit board 8 and a first antenna 16 connected via cable 14. The first antenna 16 is oriented orthogonally to the printed circuit board 8 and is attached to an inner side of the side wall of the housing 4 of the medical fluid pump 2. A vertical antenna receptacle 24 is configured in the housing 4 to receive the first antenna 16, and the vertical antenna receptacle 24 receives the antenna 16 in a form-fitting manner. The vertical antenna receptacle 24 is formed by two rails extending in a direction orthogonal to the printed circuit board 8. The rails are configured integrally with the housing 4.
[0045] FIG. 4 shows a further section of the interior of the housing 4 of the medical fluid pump with the printed circuit board 8, the cables 14 and a second antenna 26, wherein the communication circuit board 10 has been omitted for clarity. The second antenna 26 is oriented parallel to the printed circuit board 8 and is thus oriented 90° out of orientation with respect to the first antenna 16. The second antenna 26 is attached to an inner side of the side wall of the housing 4 of the medical fluid pump, which is opposite the first antenna. A horizontal antenna receptacle 28 is configured in the housing 4 to receive the second antenna 26, which receives the antenna 26 in a form-fitting manner. The horizontal antenna receptacle 28 is formed by two rails extending in a direction orthogonal to the printed circuit board 8. The rails are configured integrally with the housing 4. Both the first antenna 16 and the second antenna 26 are connected to the communication circuit board 10 via the cables 14. The cable 14 between the communication circuit board 10 and the first antenna 16, and the cable 14 between the communication circuit board and the second antenna 26 have identical lengths. The cables 14 are fixed to the printed circuit board 8 via cable clips 30. Via the cable clips 30, the antennas 16, 26 are connected to a ground potential of the printed circuit board 8.
