CN103384539A - Syringe pump - Google Patents

Abstract

The invention provides a syringe pump that can reduce the minimum distance from the moving member of the syringe plunger-driving part to the syringe holding part and is designed to reduce the size of the syringe pump by the shortening of the contracted length of the covering member when same is contracted. The syringe plunger-driving part (7) comprises: a moving member (10) that presses the syringe plunger (202) and extrudes the drug inside the main body (201) of the syringe; a guiding member (135) that moves the moving member (10) and guides same towards the main syringe body (201); and a covering member (800) that covers the guiding member and can elastically deform and contract as the moving member moves towards the main syringe body. The covering member (800) comprises multiple first protruding portions (811-816) and single second protruding portions (821, 822, 823) that are formed between two connected first protruding portions and the adjacent two connected first protruding portions. The external dimensions of the second protruding portions (821, 822, 823) are smaller than the external dimensions of the first protruding portions (811-816).

Description

Syringe pump

Technical field

The present invention relates to for the syringe pump to patient's delivering medicament etc.

Background technology

Syringe pump is such as in uses such as concentrated therapeutic rooms (ICU), be used under normal conditions the value, high accuracy and the long transfusion of temporally patient being carried out the medicines such as anticarcinogen, anesthetis, chemotherapy agent, blood transfusion etc., nutrient that set with in the flow velocity of 0.1～150mL/h, scope that injection rate is not more than 999mL.The drug flux of syringe pump is controlled and compared with other infusion pump, and is more accurate, more useful.

That is, the syringe body of using fixture will be filled with medicine can not arrange movably with respect to syringe pump, syringe pump push injection device piston and the medicine in syringe body is transported to patient's side (with reference to patent documentation 1) exactly.

The prior art document

Patent documentation

Patent documentation 1: TOHKEMY 2010-88564 communique

Summary of the invention

But, releasably be fixed with the syringe with the multiple amount of accommodating on above-mentioned syringe pump.The syringe piston that this syringe has the syringe body of accommodating medicinal liquid and is used for the medicinal liquid in syringe body is released, syringe body has body flange, and syringe piston has the piston flange.In the situation that syringe is fixed in syringe pump, syringe body is close to the inner peripheral surface of the recess of syringe pump, sliding part by the syringe piston drive division little by little pushes syringe piston to the syringe body side, supplies with thus the medicine in syringe body.

As the sliding part of the mobile member of this syringe piston drive division be the feed screw that rotates by utilizing motor, structure that syringe piston is pressed to the syringe body thruster.This feed screw is covered by the cover member of bellows.This cover member is configured between the sliding part and resettlement section of syringe piston drive division, plays the anti-foam effect that prevents medicinal liquid etc.

In such structure, before syringe piston was depressed, the corrugated tube of cover member extended and the covering feed screw.And when syringe piston was pressed to the syringe body side, sliding part was to the syringe body side shifting, covered therefore that member is pressed by sliding part and strain ground shrinks.

But cover member complete holosystolic state is the extreme position when syringe piston is depressed maximum, therefore in the situation that want to take full advantage of the volume of syringe, if the length of the cover member when this shrinks is longer, and the utilization ratio variation of syringe volume.In addition, if directly adopt such structure can hinder the miniaturization of syringe pump.

Therefore, thereby the object of the present invention is to provide and a kind ofly shorten mobile member that its contracted length can reduce the syringe piston drive division reach distance near the resettlement section side under the state of cover members contract, the syringe of the amount of accommodating of 2.5mL, 5mL, 10mL, 20mL, 30mL, 50mL can be used, the syringe pump of miniaturization can be sought.

syringe pump of the present invention, it is used for installation and is filled with the syringe of medicine and the described medicine in described syringe is carried to the patient, wherein, this syringe pump has the syringe configuration part of the syringe body of setting described syringe and is used for pushing the syringe piston drive division of the syringe piston of described syringe, described syringe piston drive division has: mobile member, it is so that the mode that described syringe piston can load and unload is controlled described syringe piston, make described syringe piston release described medicine in described syringe body with respect to described syringe body, guiding elements, it moves described mobile member and described mobile member is guided to described syringe body side, the cover member, it covers described guiding elements, along with described mobile member can shrink in the mode of strain to described syringe body side shifting, described cover member in series is formed with a plurality of continuous the 1st convex portion and the 2nd convex portions along the length direction of described syringe piston, and the outside dimension of described the 2nd convex portion is set as the outside dimension less than described the 1st convex portion.

According to such scheme, by shortening its contracted length under the state of cover members contract, thereby the mobile member that can shorten the syringe piston drive division near the distance of resettlement section side, can seek miniaturization.Namely, if the cover member is moved member and presses and shrink, the 1st convex portion in the both sides that are positioned at the 2nd convex portion can shrink with the state (the 2nd convex portion enters the state of the 1st convex portion) that the 2nd convex portion is enrolled, therefore under the state that the cover member is retracted, total length in the time of can shortening its contraction, can shorten mobile member near the distance of resettlement section side, can seek effective utilization of syringe volume.

Preferably, two described the 2nd convex portions that form continuously and form alternately continuous with described the 1st convex portion that they are adjacent to form continuously.

According to such scheme, the cover member that can obtain to obtain enough length when elongation and can shorten length dimension most when shrinking.

Preferably, an end of described cover member is connected with the side surface part of described syringe configuration part, and the other end of described cover member is connected with the side of described mobile member.

According to such scheme, the mode that can be connected with mobile member with the side surface part with the syringe configuration part covers whole guiding elements.

Preferably, be provided with incorporating section be used at least a portion of taking in the described cover member that is in contraction state in the side of described mobile member.

According to such scheme, at least a portion of the cover member after shrinking can be accommodated in the incorporating section of mobile member, therefore can shorten mobile member near the distance of resettlement section side.

Preferably, described cover member has anti-foam structure, and described guiding elements is for be rotated to carry the feed screw of described mobile member by the action that utilizes motor.

According to such scheme, utilize the cover member situation of feed screw can not occur being attached to from the liquor of outside etc.

Preferably, divide the display part that disposes demonstration information and the operating surface board with action button on the top of described main body, divide in the bottom of described main body and dispose described syringe configuration part and described syringe piston drive division.

According to such scheme, on one side medical practitioner can confirm the information of display part of the upper part of main body, Yi Bian carry out from the transfusion operation of injector delivery medicine.And, while medical practitioner can confirm the action button of information operating operation panel part of display part of the upper part of main body.

The present invention can provide a kind of following syringe pump: by shorten its contracted length under the state of cover members contract, thereby the mobile member that can shorten the syringe piston drive division is near the distance of resettlement section side, miniaturization can be sought, the syringe of the scope of 2.5mL～50mL can be used.

Description of drawings

Fig. 1 means the axonometric chart of the preferred implementation of syringe pump of the present invention.

Fig. 2 means the axonometric chart of observing syringe pump shown in Figure 1 from the W direction.

Fig. 3 means the figure of three-dimensional appearance of example of the syringe of multiple size.

Fig. 4 means the figure of the electric formation example in syringe pump.

Fig. 5 means syringe configuration part shown in Figure 2 and the axonometric chart of syringe piston drive division.

Fig. 6 means from the E direction and observes syringe configuration part shown in Figure 5 and syringe piston drive division and it is amplified the axonometric chart of expression.

Fig. 7 means the upward view of observing the body flange handle part from the F direction of Fig. 6.

Fig. 8 means the figure of the structure example of body flange handle part shown in Figure 7 and body flange test section.

Fig. 9 means the figure of cross sectional shape example at J-J line place of maintaining part of the syringe body of resettlement section shown in Figure 6.

Figure 10 (A) means the figure of example of the relation of amount of movement that this potentiometer 122 is measured and syringe size, and Figure 10 (B) means the figure that is in the comparative example outside scope of the present invention.

Figure 11 amplifies the syringe piston drive division axonometric chart of expression.

Figure 12 amplifies the syringe piston drive division axonometric chart of expression.

Figure 13 means the figure of the contraction state of the shape of boots external member and boots external member.

Figure 14 means the figure of the structure example of boots external member.

Figure 15 means the figure that many syringe pumps illustrated in figures 1 and 2 is equipped on the example of setting stand.

The specific embodiment

Below, the preferred implementation that present invention will be described in detail with reference to the accompanying.

In addition, the embodiment of the following stated is preferred concrete example of the present invention, various preferred restrictions in addition technically, but be particularly limited content of the present invention as long as no having put down in writing in the following description, scope of the present invention is not limited to these embodiments.Fig. 1 means the axonometric chart of the preferred implementation of syringe pump of the present invention.Fig. 2 observes the axonometric chart of syringe pump shown in Figure 1 from the W direction.

Syringe pump 1 illustrated in figures 1 and 2 is such as in uses such as concentrated therapeutic rooms (ICU, CCU, NICU), for the value to set in the flow velocity of 0.1～150mL/h, scope that injection rate is not more than 999mL under normal conditions, with ± 3% with interior precision and the long injection pump that temporally patient is carried out the injection of the medicines such as anticarcinogen, anesthetis, chemotherapy agent, blood transfusion etc., nutrient.This syringe pump 1 is for the medicine of selecting from the medicine library to use, and this selected medicine of transfusion.This medicine library is to comprise that in medicine library data base (DB) medication name of registration is drug information in the administration setting group of interior medicine in advance.The medical treatment practitioner needn't carry out complicated administration at every turn and set by using this medicine library, can realize the selection of medicine and the setting of medicine.

As depicted in figs. 1 and 2, syringe pump 1 syringe body (syringe urceolus) 201 that can use fixture 5 will for example be filled with the syringe 200 of medicine arranges in irremovable mode.Syringe pump 1 is to the piston flange 205 of the syringe piston 202 of T direction push injection device 200, thereby the medicine in syringe body 201 is infused to patient P exactly via tube for transfusion 203 and remaining needle 204 as shown in Figure 2.

Syringe pump 1 has the body cover 2 also referred to as main part, and this body cover 2 is one-body molded by the shaping resin material with drug resistance, is stained with medicine etc. and can prevents that also its anti-foam that enters syringe pump 1 inside from processing structure even have.So make and cover 2 and have anti-foam to process structure be owing to there being following situation: the medicines in syringe body 201 overflow or the drop hydrorrhea that is disposed at the top grow under or the disinfectant solution that uses at periphery etc. disperse and adhere to.

At first, the key element on the body cover 2 that is disposed at syringe pump 1 is described.

As depicted in figs. 1 and 2, syringe pump 1 has body cover 2 and handle 2T, handle 2T can to the N direction of horizontal direction (being right towards syringe pump 1) extend or to the T direction of horizontal direction (towards syringe pump 1 be left to) take in.Dispose display part 3 and operating surface board 4 at the upper part 2A of body cover 2.Dispose syringe mounting portion 6 at the lower part 2B of body cover 2, be used for pressing the syringe piston drive division 7 of syringe piston 202.Thus, while medical practitioner can confirm that the information of display part 3 of the upper part 2A of body cover 2 carries out from the transfusion operation of syringe 200 delivering medicaments.And, while medical practitioner can confirm the action button of information operating operation panel part 4 of display part 3 of the upper part 2A of body cover 2.

Display part 3 is can the colored image display device that shows, for example uses color liquid crystal display arrangement.This display part 3 not only can show the information statement with the statement of communicating with the eyes, and can also use as required the information of multiple foreign language to show.Display part 3 is positioned at the top-left position of the upper part 2A of body cover 2, and it is configured in the upside of syringe mounting portion 6 and syringe piston drive division 7.Operating surface board 4 is disposed at the right side of display part 3 at the upper part 2A of body cover 2, dispose power supply opening/X button 4F, flag indicator 4A at operating surface board 4, as action button, configured required F.F. shift knob 4B, beginning shift knob 4C, shutdown switch button 4D, the menu setecting button 4E of bottom line at 4 places in illustrated example.

The surface of display part 3 shown in Figure 2 is covered by for example polyester film, and is glossy.To this, the surface of operating surface board 4 is applied in for example delustring and processes.The upper part 2A of body cover 2 is the first half of body cover 2.The lower part 2B of body cover 2 is the latter halfs of body cover 2.Peripheral part of body cover 2 or a part by paste or application be preferably with the surplus color different colours of body cover 2, yellow or red encapsulant for example, thereby can show the labelling of pump.Have the following advantages by the label that this pump is set: in the situation that pump such as the infusion pump of this syringe pump 1 of many infusion pump of stacking use 1 or stacking use and other kinds etc., the visually boundary of clear and definite each pump.

As depicted in figs. 1 and 2, syringe mounting portion 6 and syringe piston drive division 7 configure side by side along directions X.Can select the syringe of the required amount of accommodating it is releasably embedded and be installed on syringe mounting portion 6 the syringe 200,300,400 of the multiple difference amount of accommodating of rear explanation from for example using Fig. 3.

In Fig. 1 and Fig. 2, the syringe 200 that the amount of the accommodating maximum in multiple syringe 200,300,400 is shown typically is subject to the active force of fixture 5 and the example that can't be mounted movably.At this, show the syringe of 3 kinds of amounts of accommodating, but also can be suitable for the syringe of the amount of accommodating that is specially 2.5mL, 5mL, 10mL, 20mL, 30mL, 50mL.

Syringe mounting portion 6 illustrated in figures 1 and 2 have syringe body of accommodating 201 resettlement section 8, fixture 5, be used for that body flange 209 (with reference to Fig. 3) with syringe 200 embeds and the body flange handle part 500 of being controlled.Resettlement section 8 has the syringe body maintaining part 8D of matrix.8 left end has wall part 8W in the resettlement section, is formed with for the pipe fixed part 9 that tube for transfusion 203 is releasably sandwiched at this wall part 8W.This pipe fixed part 9 is that the part with tube for transfusion 203 sandwiches and the slot part fixed.

In Fig. 1 and Fig. 2, when the medical treatment practitioner takes off syringe 200 at chucking operation 5 from syringe mounting portion 6, make the not shown spring of fixture 5 antagonism power and to Y1 direction (front direction) tractive, and to R1 direction rotation 90 degree, fixture 5 breaks away from from the outer peripheral face of syringe body 201 thus.Thus, syringe body 201 be disengaged by fixture 5 carry out fixing, by 8 syringe body maintaining part 8D takes off from the resettlement section, and also tube for transfusion 203 can be taken off from pipe fixed part 9.

in addition, when at this fixture 5 of operation, the resettlement section 8 of syringe mounting portion 6 being accommodated and being installed on to syringe 200, make the power of the not shown spring of fixture 5 antagonism and spend to Y1 direction tractive and to R2 direction rotation 90, by the power of spring and return to the Y2 direction, become thus in the syringe body maintaining part 8D that syringe body 201 is accommodated in resettlement section 8, and tube for transfusion 203 is embedded the interior state of pipe fixed part 9, in order to utilize fixture 5 with 2.5mL, 5mL, 10mL, 20mL, 30mL, the syringe of the amount of accommodating of 50mL is fixed, the part of the right part 8E of the resettlement section 8 of syringe mounting portion 6 becomes incised notch section.

When syringe body 201 accommodated and be installed in the syringe body maintaining part 8D of resettlement section 8, syringe piston 202 was configured in syringe piston drive division 7.This syringe piston drive division 7 has the sliding part 10 as mobile member.This sliding part 10 is according to the instruction from control part shown in Figure 2 100, Yi Bian controlling the piston flange 205 of syringe piston 202, Yi Bian relatively little by little press this piston flange 205 to the T direction with respect to syringe body 201.Thus, the medicines in syringe body 201 can pass through tube for transfusion 203 and remaining needle 204, with the value that sets in the injection rate of 0.1～150mL/h, scope that injection rate is not more than 999mL, and high accuracy and flow to for a long time patient P.In addition, the directions X in Fig. 1 and Fig. 2, Y-direction, Z direction are orthogonal, and the Z direction is above-below direction.

As the displaying contents of the drug information in display part shown in Figure 23, can colored display case such as the display field of the display field of obturation pressure degree shows, display field, the charging of the cumulant (mL) of the display field of the scheduled volume (mL) of administration, administration are historical display field, lower voltage, injection rate (mL/h), injection rate (mL) etc.

Fig. 3 means the axonometric chart of example of the syringe of above-mentioned multiple size.

In Fig. 1 and Fig. 2, show the example of syringe 200 of the amount of accommodating of syringe, for example 50mL of the fixed drug amount of accommodating maximum.The syringe 200 of the medicine amount of the accommodating maximum shown in Fig. 3 (A) comprises syringe body 201 and the syringe piston 202 with cross rib shape 202W of section, and syringe body 201 has body flange 209, and syringe piston 202 has piston flange 205.Be formed with the scale 210 of medicine in syringe body 201.One end of flexible tube for transfusion 203 releasably is connected to the export department 211 of syringe body 201.

The syringe 300 of the amount of accommodating of the moderate syringe of the amount of accommodating of the medicine shown in Fig. 3 (B), for example 10mL, 20mL, 30mL comprises syringe body 301 and has the syringe piston 302 of the cross rib shape 302W of section, syringe body 301 has body flange 309, and syringe piston 302 has piston flange 305.Be formed with the scale 310 of medicine in syringe body 301.One end of flexible tube for transfusion 203 releasably is connected to the export department 311 of syringe body 301.

The syringe 400 of the little amount of accommodating of syringe, for example 2.5mL or the 5mL of the medicine amount of the accommodating minimum shown in Fig. 3 (C) comprises syringe body 401 and has the syringe piston 402 of the cross rib shape 402W of section, syringe body 401 has body flange 409, and syringe piston 402 has piston flange 405.Be formed with the scale 410 of medicine in syringe body 401.One end of flexible tube for transfusion 203 releasably is connected to the export department 411 of syringe body 401.

Syringe 200 shown in Fig. 3 (A) is that for example the medicine amount of accommodating is the syringe of 10mL, syringe 300 shown in Fig. 7 (B) is that for example the medicine amount of accommodating is the syringe of 5mL, and the syringe 400 shown in Fig. 7 (C) is that for example the medicine amount of accommodating is the syringe of 2.0mL.Syringe 300, each syringe body 301 of 400,401 and syringe 200 illustrated in figures 1 and 2 same, can accommodate and be fixed in the syringe body maintaining part 8D of resettlement section 8.

But, illustrating 3 kinds of syringes in Fig. 3, but be not limited to this, the amount of accommodating of the medicine that syringe can be accommodated can be 2.0mL～50mL, such as 20mL, 30mL, 50mL etc., the amount of accommodating of syringe can be selected arbitrarily.

Then, with reference to Fig. 4, the electric configuration example of syringe pump illustrated in figures 1 and 21 is described.

In Fig. 4, syringe pump 1 has the control part (computer) 100 that carries out molar behavior control.This control part 100 is single-chip microcomputers for example, comprises ROM (read only memory) 101, RAM (random access memory) 102, nonvolatile memory 103 and clock 104.Clock 104 can be revised current time by the operation of regulation, can carry out the measurement of the fiducial time that the measurement, transfusion speed in elapsed time of the transfusion operation of obtaining, stipulating of current time control etc.

Control part 100 shown in Figure 4 is connected with power switch button 4S and switch 111.Switch 111 is powered from a direction control part 100 of power supply converter section 112 and rechargable battery 113 thus by Switching power converter section 112 and the such rechargable battery 113 of for example lithium ion battery.Power supply converter section 112 is connected with commercial ac power source 115 via plug 114.

In Fig. 4, dispose a pair of sense switch 120,121 in resettlement section 8.Whether sense switch 120,121 syringe body 201 that detect syringe 200 correctly are configured in resettlement section 8, and to control part 100 notices.

Potentiometer as the fixture sensor shown in Figure 4 (potentiometer) 122 links with fixture 5.The amount of movement of the fixture 5 when this potentiometer 122 moves to the Y2 direction by detect fixture 5 under by the state of fixture 5 clamping syringe body 201, thus send detection signal and whether its notice is had the syringe body 201 (301,401) of which amount of accommodating by fixture 5 clampings to control part 100.Control part 100 is according to the amount of movement on the Y-direction that obtains fixture 5 from the detection signal of this potentiometer 122, and which syringe that for example can judge in the syringe body 201,301,401 of syringe of the multiple amount of accommodating as shown in Figure 3 is mounted.In addition, even the syringe of the identical amount of accommodating, because manufacturer is different, the external diameter of syringe urceolus is difference more or less, and these data are stored in ROM101.

When the motor 133 of syringe piston drive division 7 shown in Figure 4 is driven by motor driver 134 according to the instruction of control part 100, make feed screw 135 rotations and sliding part 10 is moved to the T direction.Thus, sliding part 10 is infused the medicine in syringe body shown in Figure 2 201 to patient P by tube for transfusion 203 and via remaining needle 204 exactly to T direction push injection device piston 202.

In Fig. 4, display part driver 130 drives display part 3 according to the instruction of control part 100, shows various information, report content etc.Microphone 131 can be informed the various report content by sound according to the instruction of control part 100.

Control part 100 can be by COM1 140 carries out two-way communication with the such computer 141 of for example desk computer.This computer 141 is connected with drug data base (DB) 150, and the drug information MF that is stored in drug data base 150 can be fetched to control part 100 via computer 141, and is stored in the nonvolatile memory 103 of control part 100.Control part 100 can based on the drug information MF that stores, show drug information MF etc. at display part 3.

In Fig. 4, F.F. shift knob 4B, beginning shift knob 4C, shutdown switch button 4D, menu setecting button 4E are electrically connected to control part 100.

In addition, also be electrically connected with photo-coupled sensor 250 as the detector that whether inserts for detection of body flange 209 at control part 100.This photo-coupled sensor 250 comprises light-emitting component 251 and the photo detector 252 of accepting from the light of this light-emitting component 251.

The detailed structure of syringe mounting portion 6 then, is described.

Fig. 5 means syringe mounting portion 6 shown in Figure 2 and the axonometric chart of syringe piston drive division 7.Fig. 6 observes syringe mounting portion 6 shown in Figure 5 and syringe piston drive division 7 and amplifies the axonometric chart of expression from the E direction.

Syringe mounting portion 6 shown in Figure 5 is also the syringe mounting table of mounting syringe, comprises resettlement section 8, the fixture 5 of accommodating syringe body 201, body flange 209 (with reference to Fig. 3) and the body flange handle part 500 that is fixed and the body flange test section 600 that is used for embedding syringe 200.

As shown in Figure 5 and Figure 6, the resettlement section 8 of syringe mounting portion 6 is part or all the recesses that can accommodate syringe body 201, resettlement section 8 axially along directions X.In Fig. 1 and Fig. 2, be accommodated in resettlement section 8 as the syringe body 201 of an example with the syringe 200 of capacity maximum, but in this example, the part of the outer peripheral face of syringe body 201 is close to respect to the inner surface of the syringe body maintaining part 8D of resettlement section 8, and the nubbin of the outer peripheral face of syringe body 201 is exposed to the outside.

Fig. 7 observes the upward view of body flange handle part 500 from the F direction of Fig. 6.Fig. 8 means the figure of the structure example of body flange handle part 500 shown in Figure 7 and body flange test section 600.

What as shown in Figure 8, body flange handle part 500 and body flange test section 600 consisted of body flange controls test section 700.The test section 700 of controlling of body flange can embed the body flange 209 as the syringe 200 of an example and reliably it is controlled, and this to control test section 700 be in order control part 100 to be grasped reliably body flange 209 is embedded and body flange 209 has reached predefined this situation of assigned position LL and arranged.

At first, the structure of body flange handle part 500 is described with reference to Fig. 5～Fig. 8.

Fig. 5 and body flange handle part 500 shown in Figure 6 are plastic board members of elastically deformable, configure abreast with respect to the right side side surface part 8V of the syringe body maintaining part 8D of resettlement section 8.This body flange handle part 500 is configured in by formed of Y-direction and Z direction, and leading section 501 has 2 protuberances 502,503 and be formed at recess 504 between these protuberances 502,503.

As shown in Fig. 7 (A), protuberance 502,503 inner surface 502A, 503A become the inclined plane that the mode that attenuates with the tip tilts.Thus, body flange 209 can be crossed along the Y1 direction of Fig. 8 and easily insert between the right side side surface part 8V of the inner surface 509 of body flange handle part 500 and syringe body maintaining part 8D.As shown in Figure 6, this protuberance 502 is positioned at upside, and protuberance 503 is positioned at downside.Middle position at recess 504 preferably forms less recess 505.As shown in Fig. 7 (B), this little recess 505 is under the state that syringe 400 is installed, especially the cross rib shape 402W of section of the syringe of the little amount of accommodating such as 2.5mL syringe also can not bring impact ground to the function of syringe pump, not avoid the upper slot part to flange handle part 500 of the cross rib shape 402W of section.Installing that the urceolus diameter is little, when for example 2.5mL, 5mL syringe, contacting with flange handle part 500 and form this little recess 505 for fear of the cross rib shape 402W of section.If the cross rib shape 402W of section contacts with flange handle part 500, influential for the accuracy of detection of the ejection precision of infusing with 7 pairs of syringes of syringe piston drive division, obturation, therefore to avoid occuring this situation.

As shown in Figure 7, the inner surface 509 of body flange handle part 500 is fixed in the mode parallel with the right side side surface part 8V of the syringe body maintaining part 8D of resettlement section 8 and at the state of the closely-spaced K that is keeping the regulation shown in Fig. 7 (A).This interval K is set less than the thickness H of body flange handle part 500 and the thickness G of body flange 209.

Body flange handle part 500 shown in Figure 7 has roughly L font cross section, and an end of body flange handle part 500 is for installing base portion 506.The other end of body flange handle part 500 is the free end with protuberance 502 and protuberance 503.This installation base portion 506 uses screws 508 and is fixed with respect to the part 507 of the main body cover 2 of syringe pump 1.Thus, when body flange 209 embedded interval K, body flange handle part 500 can be to become the mode of the tilt state shown in Fig. 7 (B), with respect to base portion 506 being installed to MB direction strain from the upright state shown in Fig. 7 (A).

As shown in Fig. 7 (A)～Fig. 7 (B), if syringe 200 configures closely with the syringe body maintaining part 8D of resettlement section 8, between the leading section 501 of the right side side surface part 8V of the part of body flange 209 insertion syringe body maintaining part 8D and body flange handle part 500.Under the part of main body syringe 209 is sandwiched state between right side side surface part 8V and body flange handle part 500, and the bounce when by body flange handle part 500, strain occuring sandwiches the part of main body syringe 209 between the flat inner surface 509 of smooth right side side surface part 8V and body flange handle part 500 and fixes.

At this moment, the part of the cross rib shape 202W of section of syringe piston 202 embeds the recess 505 of the middle position of recess 504, therefore, and due to the existence of this little recess 505, the cross rib shape 202W of section can not become obstruction, the upper situation to recess 504 of the cross rib shape 202W of section can not occur.Therefore, even there is body flange handle part 500, syringe body 201 also can not can 8 syringe body maintaining part 8D is installed on syringe body maintaining part 8D with floating from the resettlement section.

As an example, body flange handle part 500 can embed the body flange 209 of syringe 200 and fixed reliably, but is not limited to syringe 200, and is fixing reliably similarly to the syringe 300,400 of other kinds for example shown in Figure 3.That is, body flange handle part 500 can embed the body flange 309 of the syringe 300 of Fig. 3 and fixed reliably.The part of the cross rib shape 302W of section of syringe piston 302 embeds the recess 505 of the middle position of recess 504, therefore, due to the existence of this little recess 505, the cross rib shape 302W of section can not become obstruction, the upper situation to recess 504 of the cross rib shape 302W of section can not occur.Equally, body flange handle part 500 can embed the body flange 409 of the syringe 400 of Fig. 3 and fixed reliably, the part of the cross rib shape 402W of section of syringe piston 402 embeds the recess 505 of the middle position of recess 504, therefore, existence due to this little recess 505, the cross rib shape 402W of section can not become obstruction, the upper situation to recess 504 of the cross rib shape 402W of section can not occur.

The structure example of body flange test section 600 then, is described with reference to Fig. 8.

Body flange test section 600 can be embedded into and body flange 209 has reached predefined this situation of assigned position LL to control part 100 notice body flange 209.This control part 100 can reach body flange 209 this situation of assigned position LL and for example be shown in display part 3.Therefore, medical practitioner can grasp reliably by visual display part 3 and syringe accurately be installed this situation.

As shown in Figure 8, body flange test section 600 comprises body flange detection means 601, spring 602, photo-coupled sensor 250, jut 603.Body flange detection means 601, spring 602 and photo-coupled sensor 250 are configured in the main body cover 2 of syringe pump 1.Body flange detection means 601 is to detect by direct contact the rod member whether body flange 209 reaches assigned position LL as shown in Fig. 8 (B).Body flange detection means 601 has the leading section 604 of detection and rearward end 605.Body flange detection means 601 can use pin 606 along the power ground rotation of GH direction antagonism spring 602.

The detection leading section 604 of body flange detection means 601 preferably forms hemispherical.As shown in Fig. 8 (A), under the state that body flange 209 is not embedded into, the rearward end 605 of body flange detection means 601 enters between the light-emitting component 251 and photo detector 252 of photo-coupled sensor 250.Therefore, come the light of self-emission device 251 to be blocked by this rearward end 605, be not subjected to light at light accepting part 252.

To this, as shown in Fig. 8 (B), be embedded into and reach under the state of assigned position LL in body flange 209, the power of body flange detection means 601 antagonism springs 602 and to the GH direction rotation.The rearward end 605 of body flange detection means 601 breaks away from between the light-emitting component 251 of photo-coupled sensor 250 and photo detector 252.

Therefore, come the light of self-emission device 251 to be subjected to light by light accepting part 252, light accepting part 252 will be subjected to optical signal RS to send to control part 100.Control part 100 is subjected to optical signal RS by receiving this, can be in display part 3 display cases as " body flange 209 reaches assigned position LL, and syringe 200 is accurately installed ".In this case, as required, control part 100 can utilize microphone shown in Figure 4 131 and language guiding " body flange 209 reaches assigned position LL, and syringe 200 is accurately installed " simultaneously.Thus, medical practitioner can show and at least one party of language guiding and grasp reliably that body flange 209 reaches assigned position LL, syringe 200 is accurately installed this situation by information.

In addition, assigned position LL is the position that the body flange of syringe of for example 50mL of body flange, the amount of accommodating maximum for the syringe of for example 2.5mL of the amount of accommodating minimum can detect.In addition, as shown in Figure 8, be provided with jut 603 at the inner surface 509 of body flange handle part 500.This jut 603 under the state shown in Fig. 8 (A) with detection leading section 604 butts of body flange detection means 601, thereby keep the inner surface 509 of body flange handle part 500 and the closely-spaced K of the regulation of the right side side surface part 8V of the syringe body maintaining part 8D of resettlement section 8.And as shown in Fig. 8 (B), if insert body flange 209, the detection leading section 604 of body flange detection means 601 breaks away from from jut 603.

In addition, as other embodiment be: even in the situation that insert body flange 209, the detection leading section 604 of body flange detection means 601 does not also break away from from jut 603, detects leading section 604 and slides on jut 603.But the purpose of this mechanism is to confirm whether body flange 209 is set up.Therefore, whether be set up and get final product so long as body flange 209 can be detected, detect leading section 604 for the body flange 209 of the value that surpasses certain setting also can make and break away from from jut 603 in the situation that be provided with thickness.

Then, with reference to Fig. 2, Fig. 6 and Fig. 9 and Figure 10, the preferable shape example of syringe body maintaining part 8D of the resettlement section 8 of syringe mounting portion 6 is described.

As Fig. 2 and shown in Figure 6, the position on the right side in the resettlement section 8 of syringe mounting portion 6, fixture 5 with it in the face of the ground configuration.In addition, as shown in Figure 6,8 right side side surface part 8V disposes the body flange handle part 500 that had illustrated in the resettlement section.

Fig. 9 represents the cross sectional shape example of J-J line of the syringe body maintaining part 8D of resettlement section shown in Figure 68.Syringe body maintaining part 8D is in order at least a portion of the outer peripheral face of syringe body 201 to be accommodated and to keep and the recess that forms, having such characteristic cross sectional shape shown in Fig. 9 (A) and Fig. 9 (B).

Fig. 9 (A) illustrates the example of the formation line on conduct basis for the cross sectional shape line 8R of the inner surface of the syringe body maintaining part 8D that forms the resettlement section 8 shown in Fig. 8 (B), illustrates 1 circular arc and forms line L1,2 straight lines formation line L2, L3.Article 2, to form line L2, L3 be the tangent line that 1 circular arc forms line L1 to straight line, in intersection point C place intersection.

At this, the cross sectional shape of the inner surface of resettlement section 8 and axial quadrature syringe body, preferably make near central part from described inner surface (contact site of L2, the L3 of Fig. 9 A) curvature of the part of (the circular arc front end of the right-hand member of Fig. 9 A) to the bottom, less than the curvature from the leading section (left part of Fig. 9 A) of this inner surface to the part of described central part.

Thus, more to the inboard of resettlement section, curvature is less.That is to say, degree of crook slows down, so the resettlement section inner surface easily contacts with the outer peripheral face of syringe body with wire, easily copies syringe body and easy location in the resettlement section, therefore can promptly carry out the installation exercise of syringe body.

The cross sectional shape line 8R of the inner surface of syringe body maintaining part 8D forms line L1 and 2 straight lines by described circular arc and forms line L2, L3 and form.Namely, as shown in Fig. 9 (B), cross sectional shape line 8R by the part 1 curve shape 8R1 of section and the part 2 curve shape 8R2 of section that are equivalent to circular arc and form line L1, be equivalent to the part 1 rectilinear form 8R3 of section and the part 2 rectilinear form 8R4 of section that 2 straight lines form line L2, L3 and consist of.

So, the cross sectional shape with axial quadrature syringe body 201 the inner surface of resettlement section 8 is, the curvature from the central part of inner surface to the part of bottom is less than the curvature from the leading section of inner surface to the part of central part.Thus, as shown in Fig. 9 (B), in the situation that the syringe 200,300 of 3 kinds of difference amounts of accommodating, 400 syringe body 201,301,401 and cross sectional shape line 8R be close to, whichever syringe body 201,301,401 is close to, and is only respectively all to be close at 2 tangent line CL1, CL2 place.Therefore, medical practitioner is by being close to syringe body 201,301,401 respectively in syringe body maintaining part 8D, thereby easily determines syringe body 201,301,401 position location, therefore improved the installation exercise of syringe.

As most preferred embodiment of the present invention, as shown in Fig. 9 (B), the syringe 200,300 of 3 kinds of difference amounts of accommodating, 400 syringe body 201,301,401 are close to the cross sectional shape line 8R of the inner surface of syringe body maintaining part 8D.1st, the part 2 rectilinear form 8R3 of section, 8R4 be have curvature greater than the 1st, the example of the shape part of the curvature of the part 2 curve shape 8R1 of section, 8R2, form V-shape.Thereby, 1st, the part 2 rectilinear form 8R3 of section, 8R4 are most preferably the parts of linear change, but can be also linear change, the 1st, part 2 rectilinear form section can be curvature greater than the 1st, the curve of the curvature of the part 2 curve shape 8R1 of section, 8R2.

It is for following reason that the cross sectional shape line 8R of syringe body maintaining part 8D is made such shape.

In the example shown in Fig. 9 (B), can guarantee interval PR1 between the inboard part 201N of the inboard part 301N of syringe body 301 and syringe body 201, equally, can guarantee interval PR2 between the inboard part 301N of the inboard part 401N of syringe body 401 and syringe body 301.

So, by form the 1st, the part 2 rectilinear form 8R3 of section, 8R4, in the situation that the syringe 200,300 of the difference amount of accommodating, 400 syringe body 201,301,401 are close to respectively, must mutually guarantee interval PR1, PR2 thus.

As shown in Figure 2, when fixture 5 is installed to the outer peripheral face of syringe body 201 (301,401) in syringe body maintaining part 8D with the outer peripheral face butt of syringe body 201 (301,401), detected the kind (outside dimension that is caused by the difference of the amount of accommodating) of these syringe body by the potentiometer 122 of the amount of movement of detection fixture 5 shown in Figure 4.Figure 10 (A) represents the amount of movement of the fixture 5 that this potentiometer 122 is measured and the relation example of syringe size.

In Figure 10 (A), when measuring the syringe 200 of 10mL, can guarantee by potentiometer 122 the poor DF1 of amount of movement during the syringe 300 of the measurement range 200S of the amount of movement of gained and potentiometer 122 mensuration 5mL between the measurement range 300S of the amount of movement of gained.Equally, when measuring the syringe 300 of 5mL, can guarantee by potentiometer 122 poor (enough and to spare amount) DF2 of amount of movement during the syringe 400 of the measurement range 300S of the amount of movement of gained and potentiometer 122 mensuration 2mL between the measurement range 400S of the amount of movement of gained.

Poor (enough and to spare amount) DF1, the DF2 that so can guarantee amount of movement is because as shown in Fig. 9 (B), can reciprocally guarantee interval PR1, PR2 in the situation that syringe body 201,301,401 is close to respectively.That is, the poor DF1 of the amount of movement shown in Figure 10 (A) gets by guaranteeing the interval PR1 shown in Fig. 9 (B), and the poor DF2 of the amount of movement shown in Figure 10 (A) gets by guaranteeing the interval PR2 shown in Fig. 9 (B).

Due to poor DF1, the DF2 that can so guarantee amount of movement, therefore control part 100 shown in Figure 4 can guarantee to measure poor DF1, the DF2 that the enough and to spare amount is amount of movement on one side, one side to be close to the kind that remains in the syringe in syringe body maintaining part 8D be syringe 200,300,400 which distinguish and detect.That is, when detecting the kind of syringe, scope 200S, 300S, the 400S of amount of movement are separated with keeping off, guarantee thus to measure poor DF1, the DF2 that the enough and to spare amount is amount of movement.

And, the medical treatment practitioner is by making each syringe body 201,301,401 outer peripheral face copy the 1st shown in Fig. 9 (B), the part 2 rectilinear form 8R3 of section, 8R4 ground to be close to it, each syringe body 201,301,401 can not kept movably thus, therefore in the time of in syringe being installed to syringe body maintaining part 8D, as long as on the Y2 direction with the state positioning instant be close to can, easily determine the installation site of syringe body.

As mentioned above, 8 inner surface is in 2 tangent line CL1, CL2 and the structure that contacts with syringe body 201,301,401 outer peripheral face in the resettlement section, therefore can easily make syringe body 201,301,401 outer peripheral face copy the inner surface of resettlement section 8 and easily position.

The cross sectional shape line 1000R of the syringe body maintaining part 1000D of the comparative example that Figure 10 (B) expression is different from embodiments of the present invention shown in Figure 9.

In this comparative example, cross sectional shape line 1000R is simple circular shape, does not have straight line portion, but the bottom has the hole of keeping out of the way 1001.In the situation that the syringe 200,300 of the difference amount of accommodating, 400 syringe body 201,301,401 be close to respectively in this cross sectional shape line 1000D, the inboard part 201N of the inboard part 401N of syringe body 401, the inboard part 301N of syringe body 301 and syringe body 201 concentrate on cross sectional shape line 1000R central authorities a bit.Therefore, the comparative example of Figure 10 (B) can not the embodiments of the present invention as shown in Fig. 9 (B) like that reciprocally be guaranteed interval PR1, PR2 between syringe 200,300,400, can't guarantee the poor DF1 of the amount of movement shown in Figure 10 (A) and the poor DF2 of amount of movement.

In addition, in the comparative example of Figure 10 (B), cross sectional shape line 1000R is simple circular shape, therefore even each syringe body 201,301,401 outer peripheral face are close to cross sectional shape line 1000R, also can't make its not stable maintenance movably, in the time of in syringe being installed on syringe body maintaining part 8D, be difficult to determine the location with the state of being close on the Y1 direction, the installation exercise of syringe is low.

As shown in Fig. 9 (B), the inner side of the outer peripheral face of the syringe body 301 the when inner side of the outer peripheral face of the syringe body 201 when for example syringe body 201 contacts from the inner surface of resettlement section 8 by 2 tangent line CL1, CL2 and the syringe body 301 of other different amounts of accommodating contact with the inner surface of resettlement section 8 by 2 tangent line CL1, CL2, not to concentrate on 1 point as the comparative example of Figure 10 (B), but can be separated from each other.Therefore, the inner side of the outer peripheral face of a plurality of syringe body that the amount of accommodating differs from one another differs from one another, therefore fixture 5 when 8 inner surface side presses to the resettlement section with syringe body 201,301 for example, measure syringe body 201 and the measurement range 300S of the potentiometric amount of movement that gets with the syringe body 301 of measuring other different amounts of accommodating of the measurement range 200S of potentiometric amount of movement can be separated from each other.

Therefore, control part 100 shown in Figure 4 can be used to the detection signal of the amount of movement of self-potential meter 122, and which syringe of distinguishing in the syringe body 201,301 of having selected to have the multiple amount of accommodating is installed on resettlement section 8 with it.When which syringe in the syringe body 301,401 of having selected to have the multiple amount of accommodating is distinguished its situation that is installed on resettlement section 8 too.

Then, with reference to Figure 11～Figure 13, the structure example of syringe piston drive division 7 shown in Figure 2 is described.Figure 11 and Figure 12 amplify the expression axonometric chart with this syringe piston drive division 7.

As Fig. 2 and shown in Figure 11, syringe piston drive division 7 is accommodated and is remained in the prolongation forming portion 2C of body cover 2.This prolongation forming portion 2C extends to the X1 direction by the lower part 2B from body cover 2 to form.As shown in Figure 2, extend forming portion 2C and have upside face 701, downside facial 702 and right side face 703.This prolongation forming portion 2C has the space S P that the right side side surface part 8V by the syringe body maintaining part 8D of upside face 701, downside face 702, right side facial 703 and the resettlement section that has illustrated 8 shown in Figure 11 surrounds, and syringe piston drive division 7 is housed in this space.

As shown in Figure 2, sliding part 10 bases of syringe piston drive division 7 are relatively little by little pressed the piston flange 205 of syringe piston 202 along T direction (X2 direction) with respect to syringe body 201 from the instruction of the control part 100 of Fig. 4.That is, the motor 133 of syringe piston drive division 7 shown in Figure 4 makes feed screw 135 rotations and sliding part 10 is moved to the T direction during by the order-driven of control part 100.Thus, sliding part 10 can be infused the medicine in syringe body shown in Figure 2 201 to patient P by tube for transfusion 203 and via remaining needle 204 exactly to T direction push injection device piston 202.

This sliding part 10 has plastic lid member 80,2 and controls member 81,82 and action bars 83.This lid member 80 can move along X1 direction and X2 direction (T direction) along the guide rail 84 that extends forming portion 2C.The medical treatment practitioner can enough fingers make this action bars 83 to the P1 direction antagonism power shown in Figure 11 (A) press, or to P2 direction shown in Figure 11 (B) by active force lift.Action bars 83 can be operated along the guide portion 83G shown in Figure 11 (B).

As shown in Figure 12 (B), the medical treatment practitioner by with action bars 83 as shown in Figure 11 (A) to P1 direction antagonism power press, thereby controlling member 81,82 moves and leaves to the X2 direction and cover member 80, expand interval BN, if the medical treatment practitioner is pressing operation bar 83 further, control member 81,82 towards each other away from the RQ1 direction expand.

After the medical treatment practitioner embedded this interval BN with the piston flange 205 of syringe piston 202, if medical practitioner decontrols action bars 83, action bars 83 recovered to the P2 direction by the power of spring.Thus, control member 81,82 by the power of not shown spring and move to the X1 direction, with piston flange 205 sandwich these control member 81,82 and the lid member 80 between and kept, and control member 81,82 to RQ2 direction closure by making, can clip and keep syringe piston 202 from both sides thereby control member 81,82.

The shape of the boots external member (boot) 800 of conduct cover member shown in Figure 2 then, is described.

This boots external member 800 cover as shown in Figure 4 the key elements such as feed screw 135 around, as shown in figure 11, be configured between the lid member 80 of the right side side surface part 8V of syringe body maintaining part 8D of resettlement section 8 and sliding part 10.Boots external member 800 is for covering the anti-foam structure of feed screw 135 grades.Thus, though the medicines in syringe body 201 overflow or the drop hydrorrhea that is disposed at the top grow under or the disinfectant solution that uses at periphery etc. disperse, can prevent that also it is attached to the key elements such as feed screw 135.

Boots external member 800 shown in Figure 11 (A) can move and extend and shrink to X1 direction and X2 direction along with sliding part 10 by for example not making because of medicine, deteriorated silicone rubber, synthetic rubber or the plastics of ultraviolet.As shown in Figure 11 (A), boots external member 800 has a plurality of the 1st convex portions 811,812,813,814,815,816, a plurality of the 2nd convex portion 821,822,823 and the linking portion 830,831 of position, left and right.

The linking portion 830 in left side passes the bore portion 599 of body flange handle part 500 and is fixed in the right side side surface part 8V of syringe body maintaining part 8D.

Be formed with continuously 2 the 1st convex portions 811,812 with the linking portion 830 in left side, also be formed with continuously 1 the 2nd convex portion 821.Be formed with continuously 2 the 1st convex portions 813,814 with this 1 the 2nd convex portion 821, also be formed with continuously 1 the 2nd convex portion 822.And, be formed with continuously 2 the 1st convex portions 815,816 with 1 the 2nd convex portion 822, also form continuously 1 the 2nd convex portion 823.1 the 2nd convex portion 823 is connected with medial surface 89 sides of lid member 80 via the linking portion 831 on right side.So, 1 the 2nd convex portion is configured between 2 the 1st convex portions.

Figure 13 (A) means the upward view of this boots external member 800 and sliding part 10.

A plurality of the 2nd convex portions 821 shown in Figure 13,822,823 D outer diameter M2 set than the 1st convex portion 811,812,813,814,815,816 little 1/2 left and right of D outer diameter M1.The lid member 80 of sliding part 10 has the boots external member incorporating section 88 of matrix.

The state that Figure 13 (B) and Figure 13 (C) expression boots external member 800 is shunk is in the boots external member incorporating section 88 of part or all be incorporated in lid member 80 of the boots external member 800 of contraction state.Thus, can be that at least a portion of boots external member 800 is accommodated in the boots external member incorporating section 88 that mobile member is sliding part 10 with the cover member that shrinks, therefore can shorten sliding part 10 near the distance of resettlement section 8 sides.

At this, the contractile function of boots external member 800 is described.

As shown in Figure 13 (A), when sliding part 10 slides to X2 direction (T direction), as shown in Figure 13 (B), the 1st adjacent convex portion 812 and the 1st convex portion 813 can be contained in the state that enrolls medially this 1 the 2nd convex portion 821 and take in 1 the 2nd convex portion 821 that the diameter between them is little.Equally, the 1st adjacent convex portion 814 and the 1st convex portion 815 can be taken in the state that 1 the 2nd convex portion 822 between them is enrolled.And remaining 1 the 2nd convex portion 823 can be taken in the state that enrolls in the 1st convex portion 816.

As shown in Figure 13 (B), under the state that boots external member 800 is contained, can maintain the state that enrolls (taking in) 1 the 2nd convex portion 821 between 2 the 1st convex portions 811 folding up, 812 convex camber, equally, can maintain the state that enrolls (taking in) the 2nd convex portion 822 between the 1st convex portion 814,815 of folding up.

Thus, compare with the situation that is formed the boots external member by the 1st convex portion that all forms formed objects, the 2nd convex portion can be taken in to enroll 2 states in the 1st convex portion, therefore under the state that boots external member 800 is shunk, can shorten its contracted length LT.By shortening its contracted length under the state that is retracted in boots external member 800, thus the sliding part 10 that can shorten syringe piston drive division 7 near the distance of resettlement section 8 sides, can seek miniaturization, so the syringe that connects 2.5mL can use.

Namely, boots external member 800 is pressed by sliding part 10 and when shrinking, the 1st convex portion that is positioned at the both sides of the 2nd convex portion can shrink with the state that the 2nd convex portion is enrolled, therefore its contracted length can be shortened under the state of cover members contract, sliding part 10 can be shortened near the distance of resettlement section 8 sides.

As shown in figure 14, can be the 1st larger convex portion 1201 and the 2nd less convex portion 1202 alternative arrangements.

But if consist of like this, the quantity of the 2nd less convex portion 1202 is compared with the situation of Figure 13, and it is many that ratio becomes, and therefore, sometimes can't fully guarantee the elongation of boots external member on the X1 direction.

Therefore, for make when elongation the boots external member can extend enough length, and shorten as far as possible its length dimension, the boots external member of present embodiment as shown in figure 13 preferably replaces repeated arrangement with 2 the 1st larger convex portions and 1 the 2nd less convex portion like this.

The example of above-mentioned syringe pump 1 then, is described.

With reference to Fig. 7, if the medical treatment practitioner will be for example the syringe body maintaining part 8D of syringe 200 and resettlement section 8 configure closely, the part of body flange 209 is inserted between the leading section 501 of the right side side surface part 8V of syringe body maintaining part 8D and body flange handle part 500.

As shown in Fig. 7 (B), under the part of main body syringe 209 is sandwiched in state between right side side surface part 8V and body flange handle part 500, and the bounce when by body flange handle part 500, strain occuring, be held and be fixed between the smooth inner surface 509 of smooth right side side surface part 8V and body flange handle part 500.Thus, body flange 209 is by between the side surface part 8V that embeds body flange handle part 500 and resettlement section 8, just energy so that the state of the free end side deflection of body flange handle part 500 easily install.

At this moment, embed the recess 505 of the middle position of recess 504 due to the part of the cross rib shape 202W of section of syringe piston 202, therefore due to the existence of this little recess 505, the cross rib shape 202W of section can not become obstruction, the upper situation to recess 504 of the cross rib shape 202W of section can not occur.

As shown in Fig. 8 (A)～Fig. 8 (B), embed and obtain in body flange 209 under the state of assigned position LL, body flange detection means 601 is to the GH direction rotation, so the rearward end 605 of body flange detection means 601 breaks away between the light-emitting component 251 of photo-coupled sensor 250 and photo detector 252.Therefore, come the light of self-emission device 251 to be subjected to light by light accepting part 252, so light accepting part 252 will be subjected to optical signal RS to send to control part 100.If control part 100 receives this and is subjected to optical signal RS, show " body flange 209 reaches assigned position LL mounting of syringe 200 exactly " at display part 3.Therefore, medical practitioner just can confirm body flange 201 to be installed to predefined this situation of position LL by visual display part 2.

In this situation, control part 100 also can utilize microphone shown in Figure 4 131 as required simultaneously, goes out " body flange 209 reaches assigned position LL mounting of syringe 200 exactly " with language guiding.Thus, medical practitioner can grasp reliably body flange 209 and reaches assigned position LL mounting of syringe 200 these situations exactly.

Thereafter, medical practitioner operates fixture shown in Figure 25, utilizes fixture 5 syringe body 201 to be close to and to be fixed in the syringe body maintaining part 8D of resettlement section 8.Thus, syringe can't move.

On the other hand, the medical treatment practitioner make as shown in Figure 11 (A) action bars 83 shown in Figure 11 (A) to P1 direction antagonism power press, as shown in Figure 12 (B), control member 81,82 and move and leave, expand interval BN from lid member 80 to the X2 direction thus.If the medical treatment practitioner is push bar 83 further, control member 81,82 towards each other away from the RQ1 direction expand.

After piston flange 205 embedding this interval BNs of medical practitioner with syringe piston 202, medical treatment practitioner unclamp operation bar 83, move to the X1 direction by the power of not shown spring thereby control member 81,82, make and control member 81,82 closed to the RQ2 direction.Thus, piston flange 205 be held and remain in these control member 81,82 and the lid member 80 between, and control member 81,82 also can be from sandwich syringe piston 202.

Then, in Fig. 4, as required, whether sense switch 120,121 syringe body 201 that detect syringe 200 correctly are configured in resettlement section 8, and notice is to control part 100.

Potentiometer 122 as the sensor of the amount of movement of fixture 5 is being clamped by fixture 5 under the state of syringe body 201, detects the amount of movement of fixture 5, and whether syringe body 201 is clamped this advisory to control part 100 reliably by fixture 5.Control part 100 is being judged as when syringe 200 being clamped reliably, and the motor 133 of syringe piston drive division 7 is made feed screw 135 rotations by the order-driven of control part 100, sliding part 10 is moved to the T direction.

Thus, sliding part 10 is infused the medicine in syringe body shown in Figure 2 201 to patient P by tube for transfusion 203 and via remaining needle 204 exactly to X2 direction (T direction) push injection device piston 202.

So, if sliding part 10 pushes syringe piston 202 to X2 direction (T direction), during from syringe 200 delivering medicament, boots external member 800 is punctured into the state shown in Figure 13 (B) from Figure 12 (A).If boots external member 800 is shunk, the 1st convex portion 812 and the 1st convex portion 813 can be taken in the state that the 2nd convex portion 821 between them is enrolled.Equally, the 1st convex portion 814 and the 1st convex portion 815 can be taken in the state that the 2nd convex portion 822 between them is enrolled.And remaining the 2nd convex portion 823 can be taken in the state that is incorporated in the 1st convex portion 823.

Namely, as shown in Figure 13 (B), under the state that boots external member 800 is contained, can keep the 2nd convex portion 821 and be incorporated in state between the 1st convex portion 811,812 of folding up, equally, can keep the 2nd convex portion 822 and be incorporated in state between the 1st convex portion 814,815 of folding up.Thus, as shown in Figure 13 (B), compare with the situation that all forms the boots external member by the 1st convex portion, the 2nd convex portion 823 can be taken in the states that enroll in the 1st convex portion 823.

In embodiments of the present invention, can embed the body flange of syringe and install reliably, and can grasp body flange and whether reach assigned position.Namely, the medical treatment practitioner can control reliably and installs by body flange being embedded the body flange handle part, about the mounted situation of body flange, control part can be grasped body flange based on the detection signal that gives control part from the body flange test section and whether reach assigned position.Therefore, because the syringe piston drive division can be pressed into syringe piston to correct direction, therefore can carry out accurately the transfusion of medicine and process.

According to the embodiment of the present invention, by easily copying to the outer peripheral face location and installation of syringe body the time and easy location, therefore can promptly carry out the installation exercise of syringe body, the situation that can be installed on to the syringe of which kind of kind in the syringe of having selected to have the multiple amount of accommodating the resettlement section is distinguished.

Figure 15 represents many syringe pumps 1 illustrated in figures 1 and 2 to be equipped on with being string the example of setting on stand 70 at above-below direction, can use simultaneously many syringe pumps 1 as required.With many syringe pumps 1 overlay configuration of identical type or with syringe pump 1 with the different types of pump of this syringe pump 1 for example during infusion pump 1100 stack arrangement, at peripheral part of peripheral part of the body cover of syringe pump 1 or a part and the body cover of infusion pump 1100 or a part is pasted or the application color different from the color of body cover yellow or red encapsulant for example preferably, can show thus the labelling 770 of pump.Thus, by the labelling 770 that pump is set, have following advantage: in the stacking use of Jiang Duotai syringe pump 1, or in the situation with the stacking uses such as pump such as infusion pump 1100 of syringe pump 1 and other kinds, medical practitioner visually explicit recognition to the boundary of each pump.

In addition, the invention is not restricted to above-mentioned embodiment, the present invention can carry out various corrections and change, can carry out various distortion in the scope that claims are put down in writing.

The syringe pump 1 of embodiments of the present invention is set as the syringe 200,300,400 that can load and unload the medicine of for example accommodating 3 kinds of sizes shown in Figure 7, but is not limited to this, also can set the syringe more than 2 kinds or 4 kinds.

Also can replace the such photodetector of photo-coupled sensor shown in Figure 8 250 and use other forms of detector, such as magnetic detector etc.

The explanation of Reference numeral

1 syringe pump, 2 body cover, the upper part of 2A body cover, the lower part of 2B body cover, 3 display parts, 4 operating surface boards, 5 fixtures, 6 syringe configuration parts, 7 syringe piston drive divisions, the resettlement section of 8 concavities, the syringe body maintaining part of 8D resettlement section, 10 sliding parts (mobile member), 100 control parts, 122 potentiometers, 135 feed screws (sliding part), 200, 300, 400 syringes, 201, 301, 401 syringe body, 202, 302, 402 syringe pistons, 205, 305, 405 piston flanges, 209, 309, the body flange of 409 syringe body, 250 photo-coupled sensors (example of detector), 500 body flange handle parts, 600 body flange test sections, 601 body flange detection means 601, 700 body flange control test section, 800 boots external members (cover member), 811～816 the 1st convex portions, 821, 822, 823 the 2nd convex portions

Claims (6)

1. syringe pump, it is used for installing and is filled with the syringe of medicine and the described medicine in described syringe is carried to the patient, it is characterized in that,

This syringe pump has the syringe configuration part of the syringe body of setting described syringe and is used for pushing the syringe piston drive division of the syringe piston of described syringe,

Described syringe piston drive division has:

Mobile member, it is so that the mode that described syringe piston can load and unload is controlled described syringe piston, makes described syringe piston release described medicine in described syringe body with respect to described syringe body;

Guiding elements, it moves described mobile member and described mobile member is guided to described syringe body side;

The cover member, it covers described guiding elements, along with described mobile member can shrink in the mode of strain to described syringe body side shifting,

Described cover member in series is formed with a plurality of continuous the 1st convex portion and the 2nd convex portions along the length direction of described syringe piston,

The outside dimension of described the 2nd convex portion is set as the outside dimension less than described the 1st convex portion.

2. syringe pump according to claim 1, is characterized in that,

Two described the 2nd convex portions that form continuously and form alternately continuous with described the 1st convex portion that they are adjacent to form continuously.

3. syringe pump according to claim 1 and 2, is characterized in that,

One end of described cover member is connected with the side surface part of described syringe configuration part, and the other end of described cover member is connected with the side of described mobile member.

4. the described syringe pump of any one according to claim 1～3, is characterized in that,

Be provided with the incorporating section be used at least a portion of taking in the described cover member that is in contraction state in the side of described mobile member.

5. the described syringe pump of any one according to claim 1～4, is characterized in that,

Described cover member has anti-foam structure, and described guiding elements is to be rotated by the action that utilizes motor the feed screw of carrying described mobile member.

6. the described syringe pump of any one according to claim 1～5, is characterized in that,

Divide the display part that disposes demonstration information and the operating surface board with action button on the top of described main body, divide in the bottom of described main body and dispose described syringe configuration part and described syringe piston drive division.

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