CN202113388U

CN202113388U - Heparin pump with liquid emptying detection structure

Info

Publication number: CN202113388U
Application number: CN2011201996187U
Authority: CN
Inventors: 杨建龙; 刘赵生; 朱远军; 刘振强
Original assignee: JIHUA MEDICAL APPARATUS AND INSTRUMENTS CO Ltd
Current assignee: JIHUA MEDICAL APPARATUS AND INSTRUMENTS CO Ltd
Priority date: 2011-06-15
Filing date: 2011-06-15
Publication date: 2012-01-18
Anticipated expiration: 2021-06-15

Abstract

The utility model discloses a heparin pump with a liquid emptying detection structure, which comprises a protecting sleeve, a lead screw, a panel, a fixing mechanism, a press head, a signal generator, a detector and a controller. The protecting sleeve guides acting force into perpendicularly downward force, the lead screw is connected with the protecting sleeve, the panel is disposed at the lower end of the protecting sleeve, the fixing mechanism fixes a syringe on the panel and is fixedly arranged on the panel, the press head is gripped with the lead screw, the signal generator and the detector are respectively arranged on opposite side surfaces of the press head and the protecting sleeve, and the controller is connected with the detector. When the liquid emptying detection structure detects that the syringe is in a liquid emptying state, the heparin pump transmits a liquid emptying alarming signal to realize liquid emptying detection, the heparin pump is provided with a knob with a locking function, the fixing position of the press head on the lead screw can be adjusted freely, and accordingly liquid can be fast filled into the syringe. The heparin pump has the advantages of simple structure, speediness and convenience in operation and high practicality.

Description

Heparin pump with sky liquid detection architecture

Technical field

This utility model relates to the heparin pump in a kind of haemodialysis control unit, especially relates to a kind of heparin pump with sky liquid detection architecture.

Background technology

Heparin pump (Heparin Pump) is for the purpose of the independence in the haemodialysis control unit.The micro-injection pump that heparin pump is equivalent to use clinically is in order to continue injecting heparin in patient blood.Owing to contact with air in extracorporeal circulation in the blood dialysis, blood coagulation takes place easily, use heparin pump to prevent blood coagulation.Wherein, heparin is clinical anticoagulant commonly used, can prevent that blood from solidifying in external pipelines such as dialyser.

In recent years, also increasingly high along with the hemodialysis industry is fast-developing to the requirement of heparin pump, except basic function of use and warning function, also require simple and quick.At present, some heparin pump product adopts motor positive and inverse to regulate injection volume.For safe in utilization and satisfied normal instructions for use, heparin pump need have sky liquid measuring ability.

Therefore, how to realize in heparin pump that empty liquid detects, and has become one of technical barrier of current urgent need solution.

Summary of the invention

This utility model proposes a kind of heparin pump with sky liquid detection architecture, when detecting syringe and be empty liquid status through empty liquid detection architecture, sends the alarm signal of sky liquid.

This utility model adopts following technical scheme to realize: a kind of heparin pump with sky liquid detection architecture comprises: active force is directed to sheath vertically downward; The screw mandrel that is connected with sheath; Be arranged on the panel of sheath lower end; Be used for syringe is fixed on the fixed mechanism on the panel, fixed mechanism is fixedly installed on the panel; Pressure head with screw mandrel interlock setting; Be separately positioned on signal generator and detector on the opposite flank of pressure head, sheath; The controller that is connected with detector.

In a preferred embodiment, said heparin pump also comprises the alarm device that is connected with controller.

In a preferred embodiment, signal generator is the Magnet that sends magnetic signal, and detector is for detecting the Hall element of magnetic signal.

In a preferred embodiment, pressure head is provided with a groove that is used for partly holding syringe center pillar handle beyond the Great Wall.

In a preferred embodiment, the heparin pump of said manual adjustments also comprises: be fixedly connected on the motor on the panel, its rotating shaft connects screw mandrel and drives the screw mandrel rotation through gear.

In a preferred embodiment, motor is biphase six line hybrid step motors, and the stepping angle is 1.8 °.

In a preferred embodiment, fixed mechanism comprises: pull bar, fixed block and spring, the wherein terminal fixed block that connects of pull bar, another terminal spring that connects.

In a preferred embodiment, said heparin pump also comprises: pressure head is locked on the screw mandrel, and perhaps with the knob of pressure head release from the screw mandrel, knob connects pressure head.

Compared with prior art, the utlity model has following beneficial effect:

When this utility model detects syringe and is empty liquid status through empty liquid detection architecture; Send the alarm signal of sky liquid and realize that empty liquid detects; And be provided with and have the locking function knob, can the fixed position of free adjustment pressure head on screw mandrel, thus realization condition is provided for the syringe of packing into fast.The utlity model has simple in structure, swift and convenient to operate and practical advantage.

Description of drawings

Fig. 1 is the structural representation of this utility model;

Fig. 2 is the electrical connection sketch map of each element in the sky liquid detection architecture.

The specific embodiment

As shown in Figure 1, this utility model proposes a kind of heparin pump with sky liquid detection architecture, and itself and syringe 4 are used.

Wherein, shown in dotted portion among Fig. 1, syringe 4 comprises: urceolus 41, and its bottom has liquid outlet, and the upper end is provided with annular shelves ring 411; Be set in the plunger 42 in the urceolus 41, its end is the handle 421 of diameter greater than the circle of plunger 42.

The heparin pump that this utility model proposes comprises: vertically disposed screw mandrel 12; Connect the sheath 11 that is arranged on screw mandrel 12 upper ends, sheath 11 is for making the effect guide rail vertically downward of pressure; Be socketed on the screw mandrel 12; With screw mandrel 12 interlocks and can depend on the pressure head 14 that screw mandrel 12 slides up and down; And a groove 141 is set on the pressure head 14; Handle 421 parts on the plunger 42 of syringe 4 are arranged at groove 141, drive plunger 42 by pressure head 14 pulling handles 421 and do piston motion up or down at urceolus 41; Connect the knob 13 of pressure head 14, be used for pressure head 14 is locked at screw mandrel 12, perhaps pressure head 14 release from the screw mandrel 12 is unclamped; Be connected the panel 16 of sheath 11 lower ends; Be arranged on and be used on the panel 16 syringe 4 is fixed on the fixed mechanism on the panel 16; This fixed mechanism comprises pull bar 151, fixed block 152 and spring 153; The one terminal fixed block 152 that connects of pull bar 151; Another terminal spring 153 that connects, fixed mechanism is used for drawing the position to being fixed on panel 16 syringe 4, makes it can gravitate and fall down; Be fixedly connected on the motor 17 on the panel 16, gear connection screw mandrel 12 is passed through in its rotating shaft, drives screw mandrel 12 rotations, drives pressure head 14 from moving down to following; Be arranged on the empty liquid detection architecture 18 between pressure head 14 and the sheath 11.

Wherein, panel 16 matching and fixing mechanisms and pressure head 14 be syringe 4 fixedly: handle 421 parts of plunger 42 are nested in the groove 141 on the pressure head 14, drive plunger 42 by pressure head 14 pulling handles 421 and do piston motion up or down at urceolus 41; Shelves ring 411 parts on the urceolus 41 are nested on the panel 16; And the pull bar 151 in the fixed mechanism spurs fixed block 152 towards the direction motion of drawing close panel 16 under the elastic force effect of spring 153, and urceolus 41 is fixed on the panel 16.

When needs are packed into when having the syringe 4 of injection; The available hands locking knob 13 that turns clockwise lightly; Move up and down pressure head 14 along sheath 11 and screw mandrel 12 directions then; Adjust to shelves ring 411 parts that suitable position is nested in the groove 141 on the pressure head 14, on the urceolus 41 handle 421 parts on the syringe 4 and be nested on the panel 16, external rotation locking knob 13 during another mistake is with pressure head 14 fixed position on screw mandrel 12 that is locked; So far, syringe 4 heparin pump of having packed into fast.

Then, motor 17 is started working, and rotates through gear drive screw mandrel 12, and pressure head 14 is moved downward, and sheath 11 is as the guide rail of exerting pressure to syringe 4, and the effect that makes pressure vertically downward.Handle 421 by on 14 pairs of plungers 42 of pressure head applies pressure from top to bottom, promotes plunger 42 and in urceolus 41, moves downward, and makes the injection in the syringe 4 be input in the body or pipeline.

In addition, motor 17 is that its rotation moves with fixed angle step by step, does not have cumulative error, can accomplish accurate control as the specific type of electric machine of control usefulness.In a preferred embodiment, what motor 17 was selected for use is biphase six line hybrid step motors, and the stepping angle is 1.8 °, cooperates motor-drive circuit 171 to control by Fig. 2 middle controller 183.

In conjunction with illustrated in figures 1 and 2, empty liquid detection architecture 18 specifically comprises: on the side of sheath 11 signal generator 181 is being set relatively on the pressure head 14, in running order down at heparin pump, this signal generator 181 continues to send a magnetic signal; On the side of pressure head 14 detector 182 is being set relatively on the sheath 11; And (plunger 42 has been in urceolus 41 bottom bottom in this moment syringe 4 in urceolus 41 when pressure head 14 pushing syringes 4 move to bottom extreme position position; Promptly this moment, syringe 4 was empty liquid status) time; Signal generator 181 on the pressure head 14 is in same horizontal plane with the detector 182 on the sheath 11, and this moment, detector 182 can detect the signal that signal generator 181 sends just now; After detector 182 detected the signal that signal generator 181 sends, controller 183 sent a pulse signal, sent sky liquid alarm signal by the connected alarm device 184 of controller 183 controls.

In a preferred embodiment, signal generator 181 is for sending the Magnet of magnetic signal, and detector 182 is for detecting the Hall element of magnetic signal.

The above is merely the preferred embodiment of this utility model; Not in order to restriction this utility model; Any modification of being done within all spirit and principles at this utility model, be equal to replacement and improvement etc., all should be included within the protection domain of this utility model.

Claims

1. heparin pump with sky liquid detection architecture, said heparin pump comprises: active force is directed to sheath (11) vertically downward; The screw mandrel (12) that is connected with sheath (11); Be arranged on the panel (16) of sheath (11) lower end; Be used for syringe (4) is fixed on the fixed mechanism on the panel (16), fixed mechanism is fixedly installed on the panel (16); Pressure head (14) with screw mandrel (12) interlock setting; It is characterized in that said heparin pump also comprises: be separately positioned on signal generator (181) and detector (182) on the opposite flank of pressure head (14), sheath (11); The controller (183) that is connected with detector (182).

2. according to the said heparin pump of claim 1, it is characterized in that said heparin pump also comprises: the alarm device (184) that is connected with controller (183) with sky liquid detection architecture.

3. according to the said heparin pump with sky liquid detection architecture of claim 1, it is characterized in that signal generator (181) is for sending the Magnet of magnetic signal, detector (182) is for detecting the Hall element of magnetic signal.

4. according to the said heparin pump of claim 1, it is characterized in that pressure head (14) is provided with one and is used for the groove (141) that part is held the handle (421) on syringe (4) plunger (42) with sky liquid detection architecture.

5. according to the said heparin pump with sky liquid detection architecture of claim 1, it is characterized in that, also comprise: be fixedly connected on the motor (17) on the panel (16), its rotating shaft connects screw mandrel (12) and drives screw mandrel (12) rotation through gear.

6. according to the said heparin pump of claim 5, it is characterized in that motor (17) is biphase six line hybrid step motors with sky liquid detection architecture.

7. according to the said heparin pump of claim 1 with sky liquid detection architecture; It is characterized in that; Fixed mechanism comprises: pull bar (151), fixed block (152) and spring (153), the wherein terminal fixed block (152) that connects of pull bar (151), another terminal spring (153) that connects.

8. according to any one said heparin pump of claim 1-7 with sky liquid detection architecture; It is characterized in that; Said heparin pump also comprises: pressure head (14) is locked on the screw mandrel (12); Perhaps pressure head (14) is gone up the knob (13) of release from screw mandrel (12), knob (13) connects pressure head (14).