JPH0251557U

JPH0251557U -

Info

Publication number: JPH0251557U
Application number: JP11408988U
Authority: JP
Priority date: 1988-05-31
Filing date: 1988-08-30
Publication date: 1990-04-11

Description

[Brief explanation of drawings]

第１図は本考案に係る携帯型微量注入ポンプの
一実施例を示す正断面図、第２図は第１図におけ
る−線断面図、第３図は第１図における−
線断面図、第４図はシリンジポンプの装着状態を
示す斜視図、第５図は回り止め摺動手段の他の実
施例を示す携帯型微量注入ポンプの要部正断面図
、第６図は第５図における−線断面図、第７
図は螺合手段の他の実施例を示す携帯型微量注入
ポンプの要部正断面図、第８図は第７図における
−線断面図、第９図は従来の携帯型微量注入
ポンプを示す略図である。１……シリンジポンプ、２……外筒、３……鍔
、５……内筒、６……ピストン、８……輪液チユ
ーブ、９……接続ソケツト、１０……器筐、１１
……シリンジポンプ収容部、１２……外筒係止溝
、１８……ガイドリブ、１９……蓋部材、２４…
…押圧摺動子、２６……回動円盤、２８……螺子
軸、２９……摺動溝、３０……ジヤーナルジヨイ
ント、３１……制御モータ、３２……減速装置、
３３……電子制御回路、３５……液圧センサ、３
７……圧力検知素子、３８……ラチエツト歯車、
４０……板発条、４１……舌状部、４２……部分
螺子、４３……嵌合段部。 FIG. 1 is a front cross-sectional view showing an embodiment of a portable microinjection pump according to the present invention, FIG. 2 is a cross-sectional view taken along the - line in FIG. 1, and FIG.
4 is a perspective view showing how the syringe pump is mounted, FIG. 5 is a front sectional view of the essential parts of a portable microinjection pump showing another embodiment of the anti-rotation sliding means, and FIG. - line sectional view in Figure 5, 7th
The figure is a front sectional view of essential parts of a portable microinjection pump showing another embodiment of the screwing means, FIG. 8 is a sectional view taken along the line -- in FIG. 7, and FIG. 9 is a conventional portable microinjection pump. This is a schematic diagram. 1... Syringe pump, 2... Outer cylinder, 3... Tsuba, 5... Inner cylinder, 6... Piston, 8... Fluid ring tube, 9... Connection socket, 10... Instrument housing, 11
...Syringe pump housing section, 12...Outer cylinder locking groove, 18...Guide rib, 19...Lid member, 24...
... Pressure slider, 26 ... Rotating disk, 28 ... Screw shaft, 29 ... Sliding groove, 30 ... Journal joint, 31 ... Control motor, 32 ... Reduction device,
33...Electronic control circuit, 35...Liquid pressure sensor, 3
7...Pressure sensing element, 38...Ratchet gear,
40... Plate spring, 41... Tongue-shaped portion, 42... Partial screw, 43... Fitting stepped portion.

Claims

[Scope of Claim for Utility Model Registration] (1) Outer cylinder fixing means for engaging the outer cylinder of a syringe pump, the inner cylinder of which is inserted into the outer cylinder so that it can be freely inserted and removed in an airtight manner, and the inner cylinder of the syringe pump. A pressing slider that comes into contact with the rear end, a pressing slider driving means that presses and moves the pressing slider from the rear along the axis of the syringe pump, and an electronic control circuit that drives and controls the driving means. A portable microinjection pump comprising: a portable microinjection pump that delivers liquid within the pump through a ring fluid tube connected to the syringe pump. (2) The pressure slider driving means screws together the screw shaft rotatably connected to the control motor via an appropriate rotational drive mechanism and the axis of the pressure slider, and connects the base of the screw shaft to the universal joint. Claim 1: Connected so as to be swingable through the
Portable microinfusion pump as described. (3) The portable microinjection according to claim 2, wherein the anti-rotation sliding means has a structure in which a sliding groove formed on the outer periphery of the pressure slider engages a guide rib provided longitudinally on the side of the device housing. pump. (4) The anti-rotation sliding means has a structure in which one rotation direction of a ratchet gear formed on the outer periphery of the pressure slider engages with a plate spring provided in the longitudinal direction on the side of the device casing. Portable microinfusion pump. (5) The inner cylinder of the syringe pump has a structure in which a hollow part is recessed from the rear end, and the pressure slider and the screw shaft are inserted into the inner cylinder of the syringe pump from the rear end. A portable microinjection pump according to any one of claims 2 to 4. (6) The screw shaft and the pressing slider are screwed together when the pressing slider is fitted to the rear end of the inner cylinder of the syringe pump, and are unthreaded when the fitting is released. 6. The portable microinjection pump according to claim 4, further comprising a sliding means. (7) A part made of a flexible material is formed in a part of the liquid tube near the drug delivery part of the syringe pump, and a pressure sensor for detecting liquid pressure is provided in close contact with the flexible part, and the pressure sensor 4. The portable microinjection pump according to claim 1, further comprising a hydraulic pressure abnormality monitoring mechanism which appropriately drives alarm means via an electronic control circuit based on the output from the portable microinjection pump.