CN100398161C

CN100398161C - Sound or vibration transfusion sensor

Info

Publication number: CN100398161C
Application number: CNB2005100963522A
Authority: CN
Inventors: 梁佐民
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-15
Filing date: 2005-11-15
Publication date: 2008-07-02
Anticipated expiration: 2025-11-15
Also published as: CN1785445A

Abstract

The present invention relates to a sound or vibration transfusion sensor which at least comprises two transfusion pipe clips which are hinged to be in the open and close state, wherein the positions which are pairwise corresponding in the middle of the two clips respectively have a circular arc-shaped groove matched with the outer diameter of a transfusion pipe, one of the grooves has a sound picking hole which is outwards extended with a sound picking barrel which is perpendicular to the circular arc-shaped grooves, and the tail end of the sound picking barrel is provided with a sound picking or vibration device. A transfusion pipe of a disposable transfusion device can be clipped between the transfusion pipe clips by the transfusion pipe clips, vibration sounds caused when liquid drops fall can be taken out by the sound picking barrel on the clips and can be converted to electrical signals through the sound picking or vibration device, and accordingly, the collection for liquid drop signals can be completed. The sensor is structurally and completely separated from a disposable transfusion device, the integrity of a disposable transfusion device is kept, and user's using habits are maintained; simultaneously, the present invention has simple use and operation, and achieves the practical application level.

Description

Sound or vibration transfusion sensor

Affiliated technical field

The present invention relates to a kind of pick off that is used for infusion monitor, specifically, it is a kind of sound or vibration transfusion sensor, and it is mainly used in the collection of infusion liquid drop signal.

Background technology

In prior art, the general most employing photoelectric sensor of transfusion controller is as Chinese patent ZL03218560.The photoelectric sensor major function is a level sensing, and what it provided is the signal of medicinal liquid " being and not being ", the control that stops after finishing that can only be used to infuse of this signal, and what can't be used for infusion process drips the speed monitoring.Yet it is very important dripping the speed monitoring.Drip the speed monitoring if finish, just must gather the drop signal, described photoelectric sensor will be finished this function, it must be installed on the Mo Feishi pipe, this must block the tubular one-tenth of Mo Feishi, influence naked eyes to dripping the observation of speed, and this is that the user is not acceptant.Chinese patent ZL02207322 also provides a kind of vapour-pressure type pick off, it utilizes the dosing mouth on the disposable transfusion device Mo Feishi pipe, connected an air bag by a trachea, air bag matches with microswitch, one of droplets fall, Mo Feishi manages interior air pressure change once, and then air bag touches the microswitch action once, thereby finishes the collection of drop signal.Though this pick off can be finished the collection of drop signal, but exist bigger shortcoming on the structure, the one, take the dosing mouth of Mo Feishi pipe, dosing mouth must be withdrawn the previous remark or establish dosing mouth in addition, changed the structure of former disposable transfusion device, destroyed use habit, this is that the user is unwilling to accept, the 2nd, is it possible that tube chamber communicates with the pick off air bag, pick off is directly contacted with the medicinal liquid cavity of disposable transfusion device, then air bag also must be made disposablely, and like this, air bag just must be changed by the user, if the dismounting of air bag and mounting structure can not guarantee air bag and repeat the accuracy of installation site, will influence the sensitivity of pick off, this not only makes troubles to the user, has destroyed user's use habit, the difficulty that realizes on the structure is also bigger simultaneously, therefore, though this patent has realized the collection of drop signal, be difficult to actual applying for above-mentioned reasons.

Summary of the invention

The objective of the invention is provides a kind of sound or vibration transfusion sensor in order to overcome the shortcoming in the prior art, and it can finish the collection of drop signal preferably, simultaneously, can separate fully with the structure of disposable transfusion device.

For achieving the above object, solution of the present invention is as follows:

Which comprises at least the tube for transfusion intermediate plate that two hinges are unified into the folding shape, on position facing each other, the middle part of these two intermediate plates, be respectively equipped with the circular groove that matches with the tube for transfusion external diameter, and have a pickup hole on the circular groove therein, extend outward at place, this pickup hole one with have the vertical pickup tube of pickup hole circle arc groove, at the tail end of pickup tube a pickup or resonator device are housed.

The further improvement project of the present invention is as follows:

Described pickup tube is connected and composed by the cylindrical body of front end and the horn-like body of tail end.

The described tube for transfusion intermediate plate that has a pickup tube is as shell wall of an infusion monitor shell or be fixedly mounted on shell wall of infusion monitor shell.

By above-mentioned solution as can be seen, the present invention can be clipped in the tube for transfusion of disposable transfusion device wherein by the tube for transfusion intermediate plate, and by on the intermediate plate with the pickup tube will be each time chatter during droplets fall take out, convert the signal of telecommunication to by pickup or resonator device, thereby finish the collection of drop signal.This pick off structurally is isolating fully with disposable transfusion device, the integrity that has kept the disposable transfusion device original structure, safeguarded user's use habit, simultaneously, use with operation all very simple, be easy to be accepted, thereby overcome the shortcoming of prior art, reached the degree of practical application by the user.Moreover, this pick off has structurally utilized the pickup tube dexterously, thereby reduced requirement to pickup or resonator device sensitivity with the machinery means of amplifying, make it utilize conventional pickup or resonator device to pick up faint drop chatter and become possibility, not only reduced manufacture difficulty, also can reduce cost greatly.

Description of drawings

Fig. 1, overall structure sketch map of the present invention.

The right view of Fig. 2, Fig. 1.

The vertical view of Fig. 3, Fig. 1.

Fig. 4, application state figure of the present invention.

The vertical view of Fig. 5, Fig. 4.

The specific embodiment

According to embodiment structure of the present invention and operation principle are described below.

Referring to Fig. 1,2,3, it has the tube for transfusion intermediate plate 1 that two hinges are unified into the folding shape, 2, on position facing each other, the middle part of these two intermediate plates, be respectively equipped with the circular groove 1-1 that matches with the tube for transfusion external diameter, 2-1, and on circular groove 2-1, have a pickup hole 2-1.1, extend outward at place, this pickup hole one with have the vertical pickup tube 3 of pickup hole circle arc groove 2-1, tail end at pickup tube 3 is equipped with a pickup or resonator device 4, described pickup device can adopt mike or other audio sensor, resonator device can adopt the diaphragm type vibrating sensor, as: polyvinylidene difluoride film vibrating sensor (PVDF).The described circular groove 2-1 that has the pickup tube preferably makes the large semicircle arc, and corresponding another circular groove 1-1 is made the small semicircle arc, like this, can make the groove of more than half circular arc that tube for transfusion is had certain curable grip, not only be convenient to the clamping of tube for transfusion, simultaneously also can make tube for transfusion be close to the pickup hole, help picking up of drop signal; Described pickup tube 3 is connected and composed by the cylindrical body of front end and the horn-like body of tail end, also can directly adopt horn shape, its cross sectional shape can be circular or square, and can with intermediate plate 2 single injection-moldeds because this pickup tube is pre-large post-small, therefore, it is identical with stethoscopic principle, have sound amplification function, it can enlarge faint drop sound, to improve the amplitude of signal.The signal that described pickup or vibrator 4 pick up can carry out pre-process by amplification or bandpass filtering, removes interfering signal, and then carries out signal identification by software, can improve the capacity of resisting disturbance of signal.

Referring to Fig. 4,5, for this pick off is structurally combined preferably with infusion monitor, the above-mentioned tube for transfusion intermediate plate 2 that has the pickup hole can be used as a shell wall of infusion monitor shell 5, perhaps tube for transfusion intermediate plate 2 is installed on the shell wall of infusion monitor shell 5, and pickup tube 3 is stretched in the shell 5, then the signal lead-out wire of pickup or resonator device 4 can directly join with the circuit board in the shell; Described shell 5 can be provided with a clamp 6 alive on the another side shell wall, be used for the fixing of housing.During use, infusion monitor 5 is fixed on the drip stand 7 earlier, and then the tube for transfusion 8 that disposable transfusion device Mo Feishi manages the lower end is clipped in the circular groove of

intermediate plate

1,2 and gets final product by this works clamp 6.

Claims

1. sound or vibration transfusion sensor, it is characterized in that: which comprises at least tube for transfusion intermediate plate (1), (2) that two hinges are unified into the folding shape, on position facing each other, the middle part of these two intermediate plates, be respectively equipped with the circular groove (1-1), (2-1) that match with the tube for transfusion external diameter, and have a pickup hole (2-1.1) on the circular groove (2-1) therein, extend outward at place, this pickup hole one with have the vertical pickup tube of pickup hole circle arc groove (2-1) (3), at the tail end of pickup tube (3) pickup or resonator device (4) are housed.

2. sound according to claim 1 or vibration transfusion sensor is characterized in that: described pickup tube (3) is connected and composed by the cylindrical body of front end and the horn-like body of tail end.

3. sound according to claim 1 and 2 or vibration transfusion sensor is characterized in that: the described tube for transfusion intermediate plate (2) that has a pickup tube is as (5) shell walls of an infusion monitor shell or be fixedly mounted on (5) shell walls of infusion monitor shell.