CN102159264B

CN102159264B - Syringe

Info

Publication number: CN102159264B
Application number: CN200980113366.7A
Authority: CN
Inventors: 杉本崇纪; 军司健
Original assignee: Biomaster Inc
Current assignee: Biomaster Inc
Priority date: 2008-04-16
Filing date: 2009-04-10
Publication date: 2013-04-17
Anticipated expiration: 2029-04-10
Also published as: JPWO2009128393A1; HK1157690A1; WO2009128393A1; JP5490682B2; CN102159264A

Abstract

The present invention relates to a rotationally operable syringe which is provided with a simple and low cost click mechanism and in which a plunger can be rotated with ease and with small force and can be reversely rotated when needed. In a syringe adapted such that a male screw thread (7) formed on a shaft (6) of a plunger (5) is engaged with a female screw thread (3) of a cylinder barrel (1), a crank handle (11), on which a knob shaft (8) for rotational operation of the crank handle (11) is eccentrically spaced from a rotating shaft (10) with an arm (9) present between the shafts, is attached to the plunger (5) and the knob shaft (8) is rotatably mounted to the arm (9). The syringe is also provided with a click mechanism (12) for engaging the knob shaft (8) with the arm (9) at each rotation of the knob shaft (8) relative to the arm (9).

Description

Syringe

Technical field

The present invention relates to plunger screw join syringe plunger cylinder side to, by making plunger rotary then the syringe that can carry out accurate discharge particularly, relates to the syringe that can utilize detent mechanism to confirm the rotation of plunger.

Background technology

For example, exist fatty centrifugalize, the fat with necessity that to utilize suction apparatus attracts and attract in the syringe, again turn back to the operation in the body.

As the syringe that in this operation, uses, disclose such as patent documentation 1, have and join plunger screw to syringe plunger cylinder side, by making the plunger rotation, can trace, the syringe of accurate discharge.

This syringe, the threaded flange screw thread that will have female thread is installed on the flange of syringe plunger cylinder, the pin thread that is formed on the axial region of plunger is threaded on the female thread of this threaded flange, simultaneously, the pallet ball that is arranged on threaded flange side is engaged in the groove that is formed on the axial direction on the axial region.

And this syringe, plunger whenever revolve and turn around, and the pallet ball is engaged in the groove of axial direction, whereby, can confirm the rotation of plunger by the click sound of pallet.

But, the syringe of this prior art will keep the screw rod of pallet ball to be embedded in the threaded flange with spring together, make the pallet ball outstanding in the female thread of threaded flange, so, exist the complex structure of threaded flange, the problem of cost up.

In addition, because the fat of discharging from syringe has high viscosity, so, in order to make the plunger rotation, need larger torque, be necessary directly to make the plunger rotation with hands, apply strong power.

Patent documentation 1: Japanese Unexamined Patent Application Publication 2005-535415 communique

Summary of the invention

The present invention is in view of the problem of the syringe existence of above-mentioned prior art, its objective is provides a kind of syringe, in the syringe of rotary operation type, detent mechanism simply and at low cost is set, simultaneously, can easily, easily make the plunger rotation, and, as required, can counter-rotate.

In order to achieve the above object, syringe of the present invention, to be formed on pin thread threaded engagement on the axial region of plunger to the female thread of syringe plunger cylinder, it is characterized in that, on aforementioned plunger, set up rotation axis that rotary manipulation uses via the crank rocker of arm from rotating shaft eccentric, simultaneously, the rotation axis of this crank rocker rotatably pivoted to be installed on the arm, and the angulation knob axle of every rotation regulation is set with respect to the detent mechanism of arm engaging.

In this case, can arrange when the torque that surpasses setting is to the rotating shaft, cut off the torque limit mechanism of the transmission of torque.

The effect of invention

According to syringe of the present invention, in the syringe of pin thread threaded engagement on the axial region that will be formed on plunger to the female thread of syringe plunger cylinder, because on aforementioned plunger, set up rotation axis that rotary manipulation uses via the crank rocker of arm from rotating shaft eccentric, simultaneously, the rotation axis of this crank rocker rotatably pivoted be installed on the arm, and the angulation knob axle of every rotation regulation is set with respect to the detent mechanism of arm engaging, so, need to groove be set at the pin thread of plunger, perhaps to bury the meticulous processing of pallet ball underground in the outstanding mode of the female thread of syringe plunger cylinder, can be simply and detent mechanism is set at low cost, simultaneously, can be light by crank rocker, easily make the plunger rotation.

In addition, the detent mechanism by the relative arm of angulation knob axle that every rotation regulation is set engages as required, can counter-rotate the axial region of plunger.

In addition, by being arranged on the torque limit mechanism that cuts off the transmission of torque when the torque of setting is to the rotating shaft, in the situation that excessive torque occurs, cut off the transmission of torque, can prevent the breakage of plunger and plunger cylinder.

Description of drawings

Fig. 1 is the front view of first embodiment of expression syringe of the present invention.

Fig. 2 represents the syringe body of this syringe, (a) be that expression makes plunger to the part sectional side view of the state that attracts side shifting, (b) be that expression makes plunger to the part sectional side view of the state of discharging side shifting, (c) be the rearview of syringe.

Fig. 3 represents the crank rocker of described syringe, (a) is its top view, (b) is its axonometric chart, (c) is its cutaway view.

Fig. 4 represents this crank rocker, (a) is its exploded perspective view, (b) is the top view of detent mechanism.

Fig. 5 represents same crank rocker, (a) be its sectional block diagram, (b) being its cutaway view, (c) is the three-view diagram of arm, (d) is four views of the cam shaft gear of arm side, (e) be the three-view diagram of rotating shaft, (f) being the three-view diagram of the threaded cap of rotating shaft, (g) is the three-view diagram of rotation axis, (h) is the three-view diagram of the threaded cap of rotation axis, (i) being the three-view diagram of latch pin, (j) is the three-view diagram of pallet housing.

Fig. 6 represents the second embodiment of syringe of the present invention, (a) is its axonometric chart, (b) is the axonometric chart of seeing when opposition side is observed this syringe, (c) is its top view, (d) is its front view, (e) is its upward view.

The specific embodiment

Below.The embodiment of syringe of the present invention is described with reference to the accompanying drawings.

Embodiment 1

Fig. 1～Fig. 5 represents first embodiment of syringe of the present invention.

This syringe, on the flange 2 of syringe plunger cylinder 1, the threaded flange 4 with female thread 3 is installed, be formed on pin thread 7 threaded engagement on the axial region 6 of plunger 5 to the female thread 3 of described threaded flange 4, by making plunger 5 rotations, can carry out the accurate discharge in trace ground.

And, this syringe, set up rotation axis 8 that rotary manipulation uses via the crank rocker 11 of arm 9 from rotating shaft 10 off-centre at aforementioned plunger 5, simultaneously, the rotation axis 8 of this crank rocker 11 rotatably pivoted be installed on the arm 9, and, the angulation knob axle 8 of every rotation regulation is set with respect to the detent mechanism 12 of arm 9 engagings.

In addition, in the present embodiment, torque limit mechanism 13 is set, when the torque that surpasses setting was to the rotating shaft 10, this torque limit mechanism 13 cut off the transmission of torques.

Syringe plunger cylinder 1, its front end have discharge portion 1a and be formed on this discharge portion 1a around and the thread barrel 1b that is connected with pipe or entry needle etc.

In addition, at the base portion of injection barrel 1, in diametric(al) pair of flanges 2 is set, on this flange 2, the threaded flange 4 with female thread 3 is installed.

In addition, on the side face of syringe plunger cylinder 1, with the scale 1c of output.

Threaded flange 4, have the slit that engages with the flange 2 of syringe plunger cylinder 1 at two ends, rotate on the position that overlaps with flange 2 by making threaded flange 4, engage also integrated with this flange 2, by making it to rotate on the position that approximately is crossed as 90 °, break away from from flange 2.

At the center of threaded flange 4, form female thread 3, pin thread 7 threaded engagement of the axial region 6 of plunger 5 are to this female thread 3.

Plunger 5 is installed to the front end of axial region 6 with liner 1d, simultaneously, with pin thread 7 threaded engagement of axial region 6 to the pin thread 3 of threaded flange 4.

In addition, on the axial region 6 of plunger 5, the hole 1e of the shape that the rotating shaft 10 of formation syringe plunger cylinder 11 engages under non-rotating state by make plunger 5 rotations via rotating shaft 10, carries out the discharge of quantitative precision.

On the other hand, the rotation axis 8 that the rotary manipulation of syringe plunger cylinder 11 is used is arranged on from the position of rotating shaft 10 off-centre via arm 9.

The bottom of rotating shaft 10 is that oval-shaped connecting rod consists of by the cross section, hangs down from an end of arm 9.

In addition, the top of rotation axis 8 is made of the parts of the shape of handling knob that is roughly triangular prism, rotatably erects the other end that is arranged on arm 9.

In addition, at the pars intermedia of rotating shaft 8, columned reverse rotation handle part 81 is set, as required, by one side these reverse rotation handle part 81 slips one are kept in the face of it, make 11 reverse rotations of syringe plunger cylinder, thus, can be with axial region 6 reverse rotations of plunger 5.

Detent mechanism 12 comprises the bottom that is arranged on integrally rotation axis 8, the cam 14 that is embedded in arm 9, with the latch pin 15 that is arranged on arm 9 sides, contacts with this cam 14 under the state that suppresses.

Cam 14 is cylindric, on its outer peripheral face, has a jagged inclination protuberance 16.

Revolve at crank rocker 11 turn around, rotation axis 8 relatively revolves when turning around, latch pin 15 is crossed this jagged inclination protuberance 16 from mild inclined-plane side, sends click sound.

In addition, the rapid inclined plane side of jagged inclination protuberance 16 stops surmounting of latch pin 15, prevents the reverse rotation of rotation axis 8.

In the present embodiment, turn around when syringe plunger cylinder 11 is revolved, when rotation axis 8 relatively revolves and turns around, turn around owing to plunger 5 revolves, so, click sound sent one time.

In addition, latch pin 15 under the state that is suppressed by spring 17, is accommodated in the pallet housing 18.

Pallet housing 18 is fixed in the screwed hole 91 of the leading section by being screwed into arm 9, whereby, in the inside of arm 9, latch pin 15 is contacted with the cam 14 of rotation axis 8.

In addition, torque limit mechanism 13 is used for cutting off the transmission of torque when the torque that surpasses setting is to the rotating shaft 10.

Torque limit mechanism 13, comprise: be formed on the jagged cam shaft gear 19 on the upper surface of rotating shaft 10, be fixed on the bearing chamber 92 of arm 9 and with the jagged cam shaft gear 93 of cam shaft gear 19 engagements of rotating shaft 10, and the spring 20 that the cam shaft gear 19 of rotating shaft 10 is suppressed to cam shaft gear 93 sides of arm 9.

Whereby, when the torque that surpasses setting was to the rotating shaft 10, the loading force of cam shaft gear 19 resistance springs 20 was also mobile, and whereby, disengaging and the idle running of

cam shaft gear

19,93 engagement each other thus, can cut off torque to the transmission of rotating shaft 10.

In addition, these detent mechanism 12 and torque limit mechanism 13 be by unloading threaded cap 21, rotation axis 8 and rotating shaft 10 can be unloaded and decompose from arm 9, and in addition, latch pin 15 decomposes by removing being screwed into of pallet housing, thereby, clean easily and sterilize.

Embodiment 2

Fig. 6 represents second embodiment of syringe of the present invention.

This syringe forms arm 9 agley, utilizes the biasing of this arm 9, holds the pallet housing 18 of detent mechanism 12.

Namely, in above-mentioned first embodiment, in the plane that comprises rotating shaft 10 and rotation axis 8, the pallet housing 18 of detent mechanism 12 is set highlightedly from rotation axis 8 side direction foreign sides, but, in the present embodiment, 10 sides are arranged on the arm 9 with turning back from rotation axis 8 to rotating shaft by the pallet housing 18 with detent mechanism 12, and it is compact that its global shape becomes.

In addition, adopt with round shape at rotation axis 8 and arm 9, become the design that integral body has graceful sense.

In addition, same as frame for movement and first embodiment of representative take detent mechanism 12 and torque limit mechanism 13, identical member is given identical label, and description is omitted.

Like this, the syringe of present embodiment, on syringe plunger cylinder 1, installation has the threaded flange 4 of female thread 3, make pin thread 7 threaded engagement on the axial region 6 that is formed on plunger 5 on the female thread 3 of this threaded flange 4, in described syringe, set up rotation axis 8 that rotary manipulation uses via the crank rocker 11 of arm 9 from rotating shaft 10 off-centre at aforementioned plunger 5, simultaneously, the rotation axis 8 of this crank rocker 11 rotatably pivoted be installed on the arm 9, and, the angulation knob axle 8 of every rotation regulation is set with respect to the detent mechanism 12 of arm 9 engagings, so, need not at the pin thread 7 of plunger 5 groove to be set, perhaps with on the female thread 3 of threaded flange 4 highlightedly mode bury the Precision Machining of pallet ball underground, detent mechanism 12 simply and at low cost is set, simultaneously, easily easily make plunger 5 rotations by crank rocker 11.

In addition, by being arranged on the torque limit mechanism 13 that cuts off the transmission of torque when the torque of setting is to the rotating shaft 10, in the situation that excessive torque occurs, the transmission partition with this torque can prevent the breakage of plunger 5 and syringe plunger cylinder 1.

More than, according to embodiment, syringe of the present invention is illustrated, still, the present invention is not limited to the structure of above-described embodiment record, in the scope that does not exceed its purport, can suitably change its structure.

Industrial applicibility

Syringe of the present invention in the syringe of rotary operation type, simply and at low cost arranges detent mechanism, simultaneously, can be easily and easily make plunger rotation, so, be suitable for being widely used in by making plunger rotary then the syringe that carries out accurate discharge.

Symbol description

1 syringe plunger cylinder

2 flanges

3 female threads

4 threaded flanges

5 plungers

6 axial regions

7 pin threads

8 rotation axis

81 reverse rotation handle parts

9 arms

91 screwed holes

92 bearing chambers

93 cam shaft gears

10 rotating shafts

11 crank rockers

12 detent mechanism

13 torque limit mechanisms

14 cams

15 latch pins

16 inclination protuberances

17 springs

18 pallet housings

19 cam shaft gears

20 springs

21 threaded caps

Claims

1. syringe, to be formed at the pin thread threaded engagement of axial region of plunger to the female thread of syringe plunger cylinder, it is characterized in that, on aforementioned plunger, set up coupled columns and fill in crank rocker that capable rotary manipulation is used, that rotation axis arranges from rotating shaft eccentric ground via arm, simultaneously, the rotation axis of crank rocker rotatably pivoted to be installed on the arm, and is provided with: the angulation knob axle of every rotation regulation is with respect to the detent mechanism of arm engaging; And the torque limit mechanism that when the torque that surpasses setting is to the rotating shaft, cuts off the transmission of torque.