CN200970396Y

CN200970396Y - Micro regulator for transfusion

Info

Publication number: CN200970396Y
Application number: CN 200620140308
Authority: CN
Inventors: 姜方
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-24
Filing date: 2006-11-24
Publication date: 2007-11-07
Anticipated expiration: 2016-11-24

Abstract

The utility model relates to a component of a medical appliance, in particular to a transfusion microadjuster, and composes a base, a knob and a rotary core. Wherein, the base is provided with an inlet connector and an outlet connector. The utility model is characterized in that: the base is provided with a column groove with an upwards opening along the axial direction. The inlet connector is positioned at the lateral of the base. The rotary core, composing an upper rotary core and a lower rotary core, is positioned inside the column groove. The knob is positioned on the upside of the base and is linked and rotary connected with the rotary core. A groove, which gradually deepens along the axial direction, is positioned along the outside circumference direction of the junction end face of the upper rotary core or the lower rotary core. The groove, together with the junction end face of the upper rotary core or the lower rotary core and the inner lateral wall of the column groove, form a gradual change channel with a gradually changed sectional area. A through hole, which is communicated with the liquid outlet of the outlet connector, is positioned at the deepest point of the gradual change channel. Adopts the solid coordinate structure, the gradual change groove of the utility model is positioned at the outside of the junction plane of the upper rotary core or the lower rotary core, so as to promote the minim regulation accuracy of the liquor flux.

Description

The transfusion microadjuster

Technical field

This utility model relates to a kind of accessory of medical equipment, particularly a kind of transfusion microadjuster.

Background technology

At present, in the general transfusion device used flow regulator usually cover be through the transfusion catheter outside, pressuredly take turns the size that continuous compressing conduit is regulated flow.But this actuator can not carry out the adjusting of trickle flow, and is not with flow scale, and it uses when being unsuitable for accurately trace transfusion.A kind of Granted publication day now also occurring is on January 26th, 2000, the patent No. be 99219623.X's " microadjuster ", this microadjuster is by rotating disk, the adjusted body, following control agent, sealing ring is formed, on, be respectively equipped with joint and the through hole that is communicated with catheter of transfusion system on the following control agent, the adjusted body, following control agent is connected and fixed, the rotating disk ambulatory splint is held between adjusted body and the following control agent, be provided with sealing ring between end face, the rotating disk upper and lower end face respectively is provided with week cutting from deep to shallow, the cutting bosom is provided with a through hole, rotate rotating disk, cooperate by groove depth between end face and sealing ring and to control flow, though this microadjuster has improved the precision of micro-adjusting to a certain extent, but because sealing ring has certain elasticity, along with sealing ring compresses the difference of degree, flow also can be different, therefore the influence trace precision of regulating.

Summary of the invention

The purpose of this utility model is the deficiency that solves above-mentioned general flow regulator and microadjuster, the transfusion microadjuster that micro-degree of regulation is higher.

Further purpose of the present utility model provides a kind of transfusion microadjuster of more convenient operation.

The purpose of this utility model is to realize by following technical solution: a kind of transfusion microadjuster, include pedestal, knob and revolve core, pedestal is provided with liquid inlet joint and fluid joint, be characterized in: the cylindrical groove that is axially arranged with upward opening of described pedestal, described liquid inlet joint is arranged on the side of pedestal, in cylindrical groove, be provided with by on revolve the core that revolves that core and backspin core form, the top that knob is arranged on pedestal with revolve the core interlock and be rotatably connected, be provided with a gradually dark vertically groove in last external circumferential in conjunction with end face of revolving core or backspin core, this groove with relative on revolve core or backspin core the medial wall in conjunction with end face and cylindrical groove constitute the gradual change passage of a sectional area gradual change, be provided with the groove that communicates with the liquid outlet of fluid joint in the bosom of gradual change passage.

This utility model further is set to: described fluid joint is arranged on the opposite side of the relative liquid inlet joint of pedestal, the cross section of the lateral wall of described backspin core is a step surface, the backspin core constitutes rotatable being sealed and matched by the inwall of this step surface and cylindrical groove, the liquid outlet of described fluid joint is arranged on the below of the step of this step surface, be provided with the breach that communicates with the bosom of passage to the position at the backspin core diameter, axle center at the backspin core is provided with through hole, through hole and breach constitute the groove of the deep end that is communicated with liquid outlet and passage, also are provided with scale and gradually the degree of depth of groove is corresponding deeply on the upper surface of pedestal.

This utility model further is set to again: the shallow end with respect to the gradual change passage on the step of described backspin core is provided with short slot, correspondingly on the core be provided with protruding arm cover and be inserted in this short slot and revolve being linked of core and backspin core on constituting last revolving, simultaneously, this protruding arm also is sealed and matched with the rotation of knob and the inlet formation of liquid inlet joint.

This utility model further is set to again: described gradually dark groove be arranged on revolve core in conjunction with on the end face, gradually dark groove closes with the structure of backspin core and the above-mentioned gradual change passage of cylindrical groove medial surface formation of pedestal.

This utility model further is set to again: the top axial that revolves core on described is provided with keyway, and the corresponding band key projection that is provided with on knob constitutes the interlock rotation in the band key projection cover insertion keyway and cooperates.

This utility model further is set to again: also be provided with the operating grip of belt switch device on pedestal, the fluid joint passes this operating grip setting.

The novel beneficial effect of this usefulness is: drive by rotary knob and revolve the core rotation, thereby the conversion that utilizes gradual change passage and inlet relative position makes from the ascending adjusting of the effusive medicinal liquid of fluid joint, perhaps descending until closing, realize the trace adjusting, and the gradual change groove is arranged on the outside of revolving core or backspin core faying face, promptly adopt rigid fit structure, thereby also improved the micro-degree of regulation of medicinal liquid flow.

Description of drawings

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

The structural representation of (ribbon gymnastics is not made handle) when Fig. 2 closes for this utility model is in;

Fig. 3 is the vertical view among Fig. 2;

The structural representation of (ribbon gymnastics is not made handle) when Fig. 4 is in maximum open degree for this utility model;

Fig. 5 is for revolving the sketch map of core in this utility model;

Fig. 6 is the upward view among Fig. 5;

Fig. 7 is the vertical view among Fig. 5;

Fig. 8 is the A-A cutaway view among Fig. 7;

Fig. 9 is the sketch map of the backspin core in this utility model;

Figure 10 is the cutaway view of bowing among Fig. 9;

Figure 11 is the B-B cutaway view among Figure 10.

The specific embodiment

Now in conjunction with the accompanying drawings this utility model is further described:

By shown in the figure as can be known, the embodiment of a kind of microadjuster of infusing of this utility model, include pedestal 2 and knob 1, pedestal 2 is provided with liquid inlet joint 21 and fluid joint 22, the cylindrical groove that is axially arranged with upward opening 23 of described pedestal 2, described liquid inlet joint 21 is arranged on the side of pedestal 2, opposite side and liquid inlet joint 21 that fluid joint 22 is arranged on the relative liquid inlet joint 21 of pedestal 2 be arranged in parallel, in cylindrical groove 23, be provided with by on revolve the core that revolves that core 3 and backspin core 4 form, the top that knob 1 is arranged on pedestal 2 with revolve the core interlock and be rotatably connected, be provided with a gradually dark vertically groove 34 in last external circumferential in conjunction with end face (can certainly backspin core in conjunction with end face) of revolving core 3, this groove 34 and the medial wall that combines end face 45 and cylindrical groove 23 of backspin core 4 constitute the gradual change passage of a sectional area gradual change, the cross section of the lateral wall of described backspin core 4 is a step surface, backspin core 4 is by inwall formation rotatable be sealed and matched of this step surface 41 with cylindrical groove 23, the liquid outlet 221 of described fluid joint 22 is arranged on the below of the step of this step surface 41, be provided with the breach 42 that communicates with the bosom of passage the deep end corresponding section of groove 34 (promptly with) in 4 radial positions of backspin core, be provided with through hole 43 in the axle center of backspin core 4, through hole 43 and breach 42 constitutes the groove of the deep end that is communicated with liquid outlet 211 and passage, be provided with short slot 44 with respect to the shallow end of the gradual change passage shallow end corresponding section of groove 34 (promptly with) on the step of described backspin core 4, revolve last that corresponding protruding arm 36 covers that are provided with are inserted in and revolve being connected of core 3 and backspin core 4 on constituting in this short slot 44 on the core 3, revolve core 3 top axials on described and be provided with keyway 31, the corresponding band key projection that is provided with on knob 1, constituting the interlock rotation in the band key projection cover insertion keyway 31 cooperates, thereby rotary knob 1 can drive and revolve core 3 and backspin core 4 rotates simultaneously, and move axially in order to revolve on preventing to produce after core 3 is enclosed within the cylindrical groove 23, be provided with annular projection 32 at the last lateral surface that revolves core 3, the corresponding ring-type pit 231 that is provided with in cylindrical groove 23, and in order to prevent that knob 2 from dropping out from revolving core 3 easily, front end at rotation 3 band key projection is provided with hole 11, after assembling, last bottom of revolving the keyway 31 of core 3 makes boss 33, after in boss 33 blocks hole 11, knob 1 promptly can not drop out from revolving core 3 easily.When rotary knob 1, knob 1 drives and revolves

core

3 and 4 rotations of backspin core, the protruding arm 36 that revolves core 3 on rotating to is during facing to the inlet 211 of liquid inlet joint 21, protruding arm 36 promptly seals up this inlet 221 and medicinal liquid can not be flowed out, promptly this actuator is from closed condition, thereby and outward winding inlet 221 when making groove 34 aim at inlets when rotary knob 1 makes protruding arm 36, medicinal liquid enters into groove 34, through breach 42, through hole 43, because it is gapped between the downside (face under the step surface 41) of backspin core and the medial wall of cylindrical groove 23, therefore gap and flow to liquid outlet 221 and flow out thus, and the shallow end that makes groove 34 is aimed at inlet 221 and is aimed at inlet 221 to the deep end of groove 34, promptly realize flow adjusting from small to large, and if want to be adjusted to required flow, the graduated disc of upper surface that can be by being arranged on pedestal is read, just can realize accurately trace adjusting of flow by this graduated disc, in the present embodiment, flow when making maximum is as much as possible greatly to satisfy the demand, and it is corresponding with breach 42 also to establish a breach 35 in last groove 34 bosoms of revolving core 3.Because this utility model is arranged on the outside (can certainly be arranged on the outside of the faying face of backspin core) of the faying face that revolves core 3 with gradual change groove 34, has promptly adopted rigid fit structure, thereby has also improved the micro-degree of regulation of medicinal liquid flow.

In the illustrated embodiment,, on pedestal 2, also be provided with the operating grip 5 of belt switch device for more convenient operation, the fluid joint passes this operating grip 5 and is provided with, because have operating grip,, therefore use convenient so just can regulate flow by rotary knob by a hands.

In above-mentioned; if will go out bottom side that liquid interface is arranged on pedestal makes promptly to go out liquid interface and be provided with the feed liquor interface is vertical; the bottom side of the through hole 43 of liquid outlet and backspin core interlinks and also belongs within this utility model protection domain; (be not provided with so usually certainly; because need the liquid inlet and outlet dropping liquid smoothly that is parallel to each other just usually); and as for knob with on revolve core and be connected; on revolve being connected of core and backspin core; can certainly adopt the structure outside the diagram to realize being linked between them, be explained in detail no longer in addition at this.

Claims

1. transfusion microadjuster, include pedestal and knob, revolve core, pedestal is provided with liquid inlet joint and fluid joint, it is characterized in that: the cylindrical groove that is axially arranged with upward opening of described pedestal, described liquid inlet joint is arranged on the side of pedestal, in cylindrical groove, be provided with by on revolve the core that revolves that core and backspin core form, the top that knob is arranged on pedestal with revolve the core interlock and be rotatably connected, be provided with a gradually dark vertically groove in last external circumferential in conjunction with end face of revolving core or backspin core, this groove with relative on revolve core or backspin core the medial wall in conjunction with end face and cylindrical groove constitute the gradual change passage of a sectional area gradual change, be provided with the groove that communicates with the liquid outlet of fluid joint in the bosom of gradual change passage.

2. transfusion microadjuster according to claim 1, it is characterized in that: described fluid joint is arranged on the opposite side of the relative liquid inlet joint of pedestal, the cross section of the lateral wall of described bottom spool is a step surface, the backspin core constitutes rotatable being sealed and matched by the inwall of this step surface and cylindrical groove, the liquid outlet of described fluid joint is arranged on the below of the step of this step surface, be provided with the breach that communicates with the bosom of passage to the position at the backspin core diameter, axle center at the backspin core is provided with through hole, through hole and breach constitute the groove of the deep end that is communicated with liquid outlet and passage, also are provided with scale and gradually the degree of depth of groove is corresponding deeply on the upper surface of pedestal.

3. transfusion microadjuster according to claim 2, it is characterized in that: the shallow end with respect to the gradual change passage on the step of described backspin core is provided with short slot, correspondingly on the core be provided with protruding arm cover and be inserted in this short slot and revolve being linked of core and backspin core on constituting last revolving, this protruding arm also is sealed and matched with the rotation of knob and the inlet formation of liquid inlet joint.

4. according to claim 1 or 2 or 3 described transfusion microadjusters, it is characterized in that: described gradually dark groove be arranged on revolve core in conjunction with on the end face, the combining and the above-mentioned gradual change passage of cylindrical groove medial surface formation of pedestal of gradually dark groove and backspin core.

5. according to claim 1 or 2 or 3 described transfusion microadjusters, it is characterized in that: the top axial that revolves core on described is provided with keyway, and the corresponding band key projection that is provided with on knob constitutes the interlock rotation in the band key projection cover insertion keyway and cooperates.

6. transfusion microadjuster according to claim 4 is characterized in that: the top axial that revolves core on described is provided with keyway, and the corresponding band key projection that is provided with on knob constitutes the interlock rotation in the band key projection cover insertion keyway and cooperates.

7. transfusion microadjuster according to claim 6 is characterized in that: also be provided with the operating grip of belt switch device on pedestal, the fluid joint passes this operating grip setting.