CN201719267U - Alimentary canal body fluid micro-collecting device - Google Patents

Abstract

An alimentary canal body fluid micro-collecting device comprises a housing and a sampling port formed thereon, and a body fluid collecting cavity arranged in the housing, wherein the body fluid collecting cavity in the inner cavity of the housing is divided into a power control mounting cavity and an exhaust cavity; the body fluid collecting cavity comprises a piston with an absorption orifice, absorbing material arranged in the inner cavity of the piston, and seal rings sleeved on two sides of the absorption orifice of the piston; the power control mounting cavity is provided with a power supply, a signal receiving and converting circuit and an antenna, a fuse cut-off voltage control circuit, and a fixing device in sequence; and at least one exhaust hole is formed in the exhaust cavity. The utility model has simple structure and encapsulation; the body fluid collecting cavity is sealed before and after body fluid is collected, so that collected liquid samples can be better preserved; a sampling mechanism is not influenced by the pressure difference of the alimentary canal; the sampling is carried out through the absorbing material, so as to ensure that all collected is body fluid; and the sampling time is controllable.

Description

The miniature harvester of a kind of digestive tract body fluid

Technical field

This utility model relates to medical treatment and detects apparatus, especially a kind of encapsulate simple, can guarantee that the body fluid that is body fluid, collects that collects can be subjected to the influence and the miniature harvester of controllable digestive tract body fluid of sampling time of digestive tract pressure reduction by intact preservation, sampling apparatus before detecting.

Background technology

Capsule endoscope is as a kind of visual diagnostic device of digestive tract disease, the application of having succeeded clinically, disclosed method for controlling duplex multi-channel intelligent capsule digestive tract endoscope such as CN1709196 and CN1647749 and duplex multipath intelligent capsule wireless endoscope system capsule endoscope system have been realized fixed point image acquisition and various control to capsule endoscope by wireless duplex communication mode.But owing to there not be the function of taking a sample, can not spot sampling, the diagnostic message of obtaining is single.

Chinese patent ZL03232994.6 discloses a kind of miniature digestive tract sampling apparatus, by being positioned at capsule shape device two ends, be subjected to the stretching of two springs of magnet control to drive sampling interior capsul of small opening and relatively moving of external seal shell respectively, finish the para-position and the dislocation of the opinion of sampling small opening, by the para-position realization sampling of inside and outside capsul up-sampling small opening.But there is following deficiency in this device:

(1) encapsulation is very difficult;

(2) air-tightness;

(3) because the pressure in the digestive tract changes constantly, this device can not guarantee that the liquid that can not that is collected is subjected to the influence that outside pressure changes after sampling finishes;

(4) owing in the digestive tract a lot of gases are arranged, only collect most of gas probably;

(5) sampling time is uncontrollable.

In sum, the encapsulation of the medical digestive tract body fluid collection devices of prior art very difficulty, air-tightness, sampling time uncontrollable, be subjected to the big and detection weak effect of pressure variable effect.

The content of utility model

This utility model provide a kind of encapsulate simple, can guarantee that the body fluid that is body fluid, collects that collects can be subjected to the influence and the sampling time may command of digestive tract pressure reduction, the miniature harvester of digestive tract body fluid that accuracy of detection is high by intact preservation, sampling apparatus before detecting.

For achieving the above object, technical scheme is as follows, i.e. the miniature harvester of digestive tract body fluid comprises housing and the thief hatch on it is set and is arranged on the humor collecting storehouse of enclosure interior, wherein: described housing inner chamber has the humor collecting storehouse, and the humor collecting storehouse is divided into dynamic Control storehouse and aerofluxus storehouse are installed; Described humor collecting storehouse is made of the piston that has adsorption orifice, the sealing ring that is arranged on the adsorbing material in the piston cavity and is enclosed within piston adsorption orifice both sides; Described dynamic Control is installed in the storehouse and is provided with power supply, signal receives change-over circuit and antenna, fusing voltage control circuit and fixture, fixture is made of the two fusible broken strings and the spring of varying length, wherein by the front end of spring be connected with piston, the fusible broken string of varying length is compressed into two states with spring respectively, when the fusing voltage control circuit fuses short fusible broken string, remove first compressive state of spring and make it be stretched to the state of long fusible broken string with the spring compression, this moment, piston was shifted onto thief hatch on its adsorption orifice and the housing to bit position by spring; When the fusing voltage control circuit fused long fusible broken string, piston extended once more, promoted piston up to the aerofluxus storehouse, at this moment the thief hatch dislocation on its adsorption orifice and the housing; The aerofluxus storehouse has at least one steam vent.

In the said structure: described housing is divided into left and right two sections, connects by screw thread or bayonet socket between two sections.The thief hatch humor collecting storehouse of described housing is that insulant is made by having the adsorption orifice housing.

The utlity model has following advantage: the sampling capsule encapsulates simple in early stage in the production process; Before and after the biological fluid extracting, the biological fluid extracting chamber is a sealing state, and institute's collection liquid sample can obtain preserving preferably; Sampling mechanism is not subjected to the influence of digestive tract pressure reduction; Adopt adsorbing material to sample, with the body fluid that is that guarantees to be collected; Sampling time is controlled.

Description of drawings

The embodiment of the indefiniteness that this utility model said structure can provide by accompanying drawing further specifies.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation in this utility model sampling process;

Fig. 3 is this utility model sampling structural representation after finishing.

In the accompanying drawing: 1, shell; 2, power supply; 3, signal receives change-over circuit and antenna; 4, fusing voltage control circuit; 5, fixture; 6, spring; 7, fusible broken string; 8, fusible broken string; 9, sealing ring; 10, special-shaped piston; 11, adsorbing material; 12, thief hatch; 13, aerofluxus storehouse; 14, steam vent.

The specific embodiment

Referring to Fig. 1, the miniature harvester of the body fluid of digestive tract shown in the figure, comprisehousing 1 and thethief hatch 12 on it is set and is arranged on the humor collecting storehouse of enclosure interior that wherein: describedhousing 1 inner chamber has the humor collecting storehouse, the humor collecting storehouse is divided into dynamic Control storehouse andaerofluxus storehouse 13 is installed; Described humor collecting storehouse is made of thepiston 10 that has adsorption orifice, thesealing ring 9 that is arranged on the adsorbingmaterial 11 inpiston 10 inner chambers and is enclosed withinpiston 10 adsorption orifice both sides; Described dynamic Control is installed in the storehouse and is provided withpower supply 2 in turn, signal receives change-over circuit andantenna 3, fusing voltage control circuit 4 andfixture 5,fixture 5 by two fusiblebroken strings 7 of varying length and 8 andspring 6 constitute, wherein the front end by spring is connected withpiston 10 with 6, the fusible brokenstring 7 and 8 of varying length is compressed into two states with spring respectively, when fusing voltage control circuit 4 makes 7 fusing of short fusible broken string, remove first compressive state of spring and make it be stretched to the state of long fusiblebroken string 8 with the spring compression, this moment,piston 10 was shifted onto 12 pairs of bit positions of thief hatch on its adsorption orifice and the housing by spring; When fusing voltage control circuit 4 made 8 fusing of long fusible broken string,piston 10 was advanced in theaerofluxus storehouse 13 by the elongation once more of spring, 12 dislocation of the thief hatch on its adsorption orifice and the housing at this moment; Aerofluxusstorehouse 13 has at least one steam vent.

In the said structure: describedhousing 1 is divided into left and right two sections, and screw thread or bayonet socket connect between two sections.

Describedhousing 1, humor collecting storehouse are biocompatible materials and make.

Thief hatch 12 on the describedhousing 1 has several to be distributed on the same circumference.

Adsorption orifice on the described humor collecting storehouse can be corresponding withhousing 1 up-sampling mouth 12 with spacing for number, also can be circular opening.

Describedpower supply 2 is a button cell.

When in use, said structure uses in conjunction with the outer controller of patient body, and controller adopts the communication mode of wireless duplex multi-channel, and the control of last arrangement works state comprises: duty selection, fusing Control of Voltage etc.

Said structure is work like this---referring to Fig. 1,2 and 3 controllers that this device and patient body is outer use simultaneously, after this device is swallowed digestive tract, arrival need be carried out after the zone of liquid acquisition, the operator sends signal by external controller, the antenna that the signal of this device receives in change-over circuit and theantenna 3 receives extraneous command signal, the signal that receives change-over circuit andantenna 3 by signal receives and is transported to fusing voltage control circuit 4 after change-over circuit is changed, fusing voltage control circuit 4 produces electric current, in two fusible broken strings short one fuses, get finalproduct fuse wire 7,spring 6 promotespiston 10 owing to losing constraint, when long fusiblebroken string 8 is straightened,piston 10 stops to move, at this moment, the adsorption orifice of piston is aimed at thethief hatch 12 of hull outside, adsorbingmaterial 11 is sampled bythief hatch 12, after adsorbingmaterial 11 is adsorbed onto enough liquid, external controller sends the instruction of second road, fusing voltage control circuit 4 produces electric current, second fusiblebroken string 8 fuses,piston 10 continues reach under the effect ofspring 6 expansion forces, until closingthief hatch 12.

The utility model has the advantages that in process of production encapsulation is simple; Before and after the biological fluid extracting, the biological fluid extracting storehouse is sealing state, and institute's collection liquid sample can obtain preserving preferably; Sampling mechanism is not subjected to the impact of alimentary canal pressure reduction; Adopt sorbing material to sample, with the body fluid that is that guarantees to be collected; Sampling time is controlled.

Claims (5)

1. miniature harvester of digestive tract body fluid, comprise housing (1) and the thief hatch (12) on it be set and be arranged on the humor collecting storehouse of enclosure interior that it is characterized in that: described housing (1) inner chamber is divided into dynamic Control by the humor collecting storehouse storehouse and aerofluxus storehouse (13) are installed; Described humor collecting storehouse is made of the piston that has adsorption orifice (10), the sealing ring (9) that is arranged on the adsorbing material (11) in piston (10) inner chamber and is enclosed within piston (10) adsorption orifice both sides; Described dynamic Control is installed in the storehouse and is provided with power supply (2), signal receives change-over circuit and antenna (3), fusing voltage control circuit (4) and fixture (5), fixture (5) is made of the two fusible broken strings (7 and 8) and the spring (6) of varying length, wherein the front end by spring is connected with piston (10) with (6), the fusible broken string (7 and 8) of varying length is compressed into two states with spring respectively, when fusing voltage control circuit (4) makes short fusible broken string (7) fusing, remove first compressive state of spring and make it be stretched to the state of long fusible broken string (8) with the spring compression, piston this moment (10) is shifted onto thief hatch (12) on its adsorption orifice and the housing to bit position by spring; When fusing voltage control circuit (4) made long fusible broken string (8) fusing, piston (10) was advanced in the aerofluxus storehouse (13) by the elongation once more of spring, at this moment thief hatch (12) dislocation on its adsorption orifice and the housing; Aerofluxus storehouse (13) has at least one steam vent.

2. the miniature harvester of digestive tract body fluid according to claim 1 is characterized in that: described housing (1) is divided into left and right two sections, and screw thread or bayonet socket connect between two sections.

3. the miniature harvester of digestive tract body fluid according to claim 1 and 2 is characterized in that: described housing (1) and humor collecting storehouse are that biocompatible materials is made.

4. the miniature harvester of digestive tract body fluid according to claim 1 is characterized in that: have several to be distributed on thief hatch (12) on the same circumference on the described housing (1).

5. the miniature harvester of digestive tract body fluid according to claim 1 is characterized in that: described power supply (2) is a button cell.

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