CN210394336U

CN210394336U - Bacteria extraction device

Info

Publication number: CN210394336U
Application number: CN201921318863.8U
Authority: CN
Inventors: 魏沛; 刘家云; 魏沛蕾; 徐宝玲; 师新娟; 罗振娟; 范晓英
Original assignee: Fourth Military Medical University FMMU
Current assignee: Fourth Military Medical University FMMU
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2020-04-24
Anticipated expiration: 2029-08-14

Abstract

The utility model provides a bacteria extraction device, which comprises a sampling cylinder, an extracting solution spraying mechanism and an extracting solution recovery mechanism, wherein the sampling cylinder is provided with an opening for limiting the sampling area; at least part of the extracting solution spraying mechanism extends to the inner cavity of the sampling cylinder and is opposite to the wound surface limited in the sampling cylinder so as to spray the bacteria extracting solution to the wound surface to wash bacteria on the wound surface and enable the washed bacteria to be dissolved into the bacteria extracting solution; the extracting solution recycling mechanism is used for recycling the bacteria extracting solution sprayed on the wound surface so as to extract bacteria blended in the bacteria extracting solution. Therefore, when burn bacteria inspection is carried out, bacteria on the wound surface can be accurately extracted, and the influence of subjective factors of the proficiency of operators is avoided. Solves the problems that the prior art adopts cotton swabs or common gauze for matching to extract bacteria on the wound surface, has large error of sampling and testing results, and is difficult to provide reliable basis for clinical diagnosis and observation of curative effect.

Description

Bacteria extraction device

Technical Field

The utility model relates to the field of medical equipment, particularly, relate to a bacterium extraction element.

Background

Bacterial infection is one of the major complications of burns, and therefore, bacteriological examination is an important component of clinical testing for burns. The quantitative extraction and determination of the bacteria in the unit area of the wound surface are an important index for observing the treatment effect of burn external drugs and various biological coverings and judging the infection degree of the wound surface, and the change of the state of an illness is reflected in time through the sampling and determination of the bacteria in the burn wound surface, thereby providing a reference for clinical diagnosis, treatment and medicine selection.

In the prior art, cotton swabs or common gauze are generally adopted to be matched for wound surface bacteria extraction, the tools have no unified specification, no unified operation method and standard during sampling, and are influenced by subjective factors such as proficiency of operators in different degrees, so that the sampling inspection result has large error, and the sampling inspection result is difficult to provide reliable basis for clinical diagnosis and observation of curative effect, and even directly influences treatment.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a bacteria extraction device to adopt cotton swab or ordinary gauze cooperation to carry out the surface of a wound bacteria extraction among the solution prior art, the sample test result error is big, is difficult to provide the problem of reliable foundation for clinical diagnosis and observation curative effect.

In order to achieve the above object, the utility model provides a bacteria extraction device, include: one end of the sampling cylinder is provided with an opening for buckling on the wound surface to limit the sampling area; the extracting solution spraying mechanism is arranged corresponding to the sampling cylinder, at least part of the extracting solution spraying mechanism extends to the inner cavity of the sampling cylinder and is opposite to the wound surface defined in the sampling cylinder so as to spray the bacteria extracting solution to the wound surface defined in the sampling cylinder to wash bacteria on the wound surface and enable the washed bacteria to be dissolved in the bacteria extracting solution; the extracting solution recovery mechanism is communicated with the inner cavity of the sampling cylinder and is used for recovering the bacterial extracting solution sprayed on the wound surface so as to extract bacteria blended into the bacterial extracting solution.

Further, the cross-sectional area of the opening is a preset unit area so that the extracting solution recovery mechanism can extract bacteria in the unit area on the wound surface.

Further, the extract spraying mechanism includes: the shower nozzle, the shower nozzle sets up in the sampling tube, and the shower nozzle is provided with a plurality of nozzles towards open surface, and a plurality of nozzles are relative with uncovered to when the uncovered lock of sampling tube is on the surface of a wound, spray the bacterium extract to the surface of a wound of injecing in the sampling tube.

Further, the extracting solution spraying mechanism still includes: the extracting solution storage tank is used for storing the bacterial extracting solution; the pressure pump is arranged in the extracting solution storage tank; wherein, the force (forcing) pump passes through first transfer line and shower nozzle intercommunication to the bacterium extract with in the extract bin pressurizes to preset pressure and carries to the shower nozzle in order to spray the bacterium extract to the surface of a wound of injecing in the sampling tube through first transfer line.

Furthermore, the cross section of the sampling tube is circular, and the spray head is of a disc-shaped structure matched with the inner wall of the sampling tube.

Further, the extracting solution recovering mechanism includes: the wall of the recovery barrel is provided with a liquid return port communicated with the inner cavity of the recovery barrel; wherein, set up the drain hole rather than the inner chamber intercommunication on the lateral wall of sampling tube near open one end, the drain hole is through the second transfer line and the liquid return mouth intercommunication of recycling bin in order to carry the bacterium extract of spraying on the surface of a wound to the recycling bin.

Further, the extracting solution recovering mechanism further comprises: the piston is movably arranged in the recycling bin, the liquid return port is opposite to the piston, and an inner cavity between the piston and the liquid return port in the recycling bin forms a recycling cavity for recycling the bacterial extracting solution; the driving electric cylinder is arranged on the recovery barrel, and a driving rod of the driving electric cylinder is connected with the piston; wherein, the driving electric cylinder drives the piston to move along the direction far away from the liquid return port, and the bacteria extracting solution sprayed on the wound surface is sucked into the recovery cavity.

Furtherly, offer the leakage fluid dram rather than the inner chamber intercommunication on the recycling bin bucket wall, the leakage fluid dram is relative with the piston, and extract recovery mechanism still includes: the liquid discharge pipe is communicated with the liquid discharge port; when the driving electric cylinder drives the piston to move along the direction close to the liquid outlet, the bacteria extracting solution in the recovery cavity is discharged through the liquid outlet pipe.

Further, the extracting solution recovering mechanism further comprises: the first one-way valve is arranged on the liquid return port; the second check valve is arranged on the liquid outlet: when the piston moves in the direction far away from the liquid return port, the first one-way valve is opened and the second one-way valve is closed, so that the bacterial extract sprayed on the wound surface is sucked into the recovery cavity; when the piston moves along the direction close to the liquid outlet, the second one-way valve is opened and the first one-way valve is closed so that the bacteria extracting solution in the recovery cavity is discharged through the liquid outlet pipe.

Furthermore, a plurality of extracting solution recovery mechanisms are arranged at intervals around the circumference of the sampling cylinder and are communicated with the inner cavity of the sampling cylinder; wherein, part of the extracting solution recovery mechanism or the whole extracting solution recovery mechanism works to recover the bacteria extracting solution sprayed on the wound surface.

The bacteria extraction device applying the technical scheme of the utility model comprises a sampling cylinder, an extracting solution spraying mechanism and an extracting solution recovery mechanism, wherein one end of the sampling cylinder is provided with an opening for buckling on a wound surface to limit a sampling area; the extracting solution spraying mechanism is arranged corresponding to the sampling cylinder, at least part of the extracting solution spraying mechanism extends to the inner cavity of the sampling cylinder and is opposite to the wound surface defined in the sampling cylinder so as to spray the bacteria extracting solution to the wound surface defined in the sampling cylinder to wash bacteria on the wound surface and enable the washed bacteria to be dissolved in the bacteria extracting solution; the extracting solution recovery mechanism is communicated with the inner cavity of the sampling cylinder, and the extracting solution recovery mechanism is used for recovering the bacteria extracting solution sprayed on the wound surface so as to extract bacteria blended into the bacteria extracting solution. Therefore, when burn bacteria inspection is carried out, bacteria on the wound surface can be accurately extracted, and the influence of subjective factors of the proficiency of operators is avoided. Solves the problems that the prior art adopts cotton swabs or common gauze for matching to extract bacteria on the wound surface, has large error of sampling and testing results, and is difficult to provide reliable basis for clinical diagnosis and observation of curative effect.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of an optional bacteria extraction device according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a sampling tube; 11. opening the mouth; 12. a drain hole; 20. an extract spraying mechanism; 21. a spray head; 211. a nozzle; 22. an extract storage tank; 23. a pressure pump; 24. a first infusion tube; 30. an extract recovery mechanism; 31. a recycling bin; 32. a second infusion tube; 33. a piston; 34. driving an electric cylinder; 35. a recovery chamber; 36. a liquid discharge pipe; 37. a first check valve; 38. a second one-way valve; 40. and a controller.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

According to the embodiment of the present invention, as shown in fig. 1, the bacteria extraction device comprises a sampling tube 10, an extracting solution spraying mechanism 20 and an extracting solution recovering mechanism 30, wherein one end of the sampling tube 10 has an opening for being fastened on a wound surface to limit a sampling area; the extracting solution spraying mechanism 20 is arranged corresponding to the sampling cylinder 10, at least part of the extracting solution spraying mechanism 20 extends to the inner cavity of the sampling cylinder 10 and is opposite to the wound surface defined in the sampling cylinder 10 so as to spray the bacteria extracting solution to the wound surface defined in the sampling cylinder 10 to wash bacteria on the wound surface and enable the washed bacteria to be dissolved into the bacteria extracting solution; the extracting solution recovering mechanism 30 is communicated with the inner cavity of the sampling tube 10, and the extracting solution recovering mechanism 30 is used for recovering the bacteria extracting solution sprayed on the wound surface so as to extract bacteria blended in the bacteria extracting solution. Therefore, when burn bacteria inspection is carried out, bacteria on the wound surface can be accurately extracted, and the influence of subjective factors of the proficiency of operators is avoided. Solves the problems that the prior art adopts cotton swabs or common gauze for matching to extract bacteria on the wound surface, has large error of sampling and testing results, and is difficult to provide reliable basis for clinical diagnosis and observation of curative effect.

In specific implementation, the cross-sectional area of the opening 11 is a preset unit area, for example, 1 square centimeter, so that when the opening 11 is fastened to the wound surface, bacteria in the unit area on the wound surface can be extracted through the extracting solution recovering mechanism 30. Therefore, the method provides important indexes for observing the treatment effects of burn external drugs and various biological coverings and judging the infection degree of the wound surface, reflects the change of the state of an illness in time through sampling and measuring burn wound surface bacteria, and provides reference for clinical diagnosis, treatment and drug selection.

Further, the extracting solution spraying mechanism 20 comprises a spray head 21, an extracting solution storage tank 22 and a pressure pump 23, wherein the extracting solution storage tank 22 is arranged above the sampling cylinder 10, and the extracting solution storage tank 22 is used for storing bacterial extracting solution; the pressure pump 23 is arranged in the extracting solution storage tank 22; the pressure pump 23 is communicated with the spray head 21 through a first infusion tube 24 so as to pressurize the bacteria extract in the extract storage tank 22 to a preset pressure and deliver the bacteria extract to the spray head 21 through the first infusion tube 24, the spray head 21 is arranged in the sampling tube 10, a plurality of nozzles 211 are arranged on the surface of the spray head 21 facing the opening 11, and the plurality of nozzles 211 are opposite to the opening 11. Specifically, the cross section of sampling tube 10 is circular, shower nozzle 21 is the disc structure that suits with the inner wall of sampling tube 10, each nozzle 211 interval sets up the lower surface at disc-shaped shower nozzle 21 and equals with uncovered 11 cross-sectional distance, thereby when uncovered 11 lock of sampling tube 10 is on the surface of a wound, can evenly spray the bacterium extract to the surface of a wound of injecing in sampling tube 10 through each nozzle 211, with the bacterium that will be on the surface of a wound washes away, and then is retrieved by extract recovery mechanism 30 and carries out the analysis in order to draw the bacterium of melting into the bacterium extract.

Furthermore, a plurality of extracting solution recovery mechanisms 30 are provided, and the extracting solution recovery mechanisms 30 are arranged around the circumference of the sampling tube 10 at intervals and are communicated with the inner cavity of the sampling tube 10; wherein a part of the extract recovering mechanism 30 or the whole extract recovering mechanism 30 works to recover the bacteria extract sprayed on the wound surface. The amount of the operation of the extracting solution recovering mechanism 30 is determined according to the amount of the bacterial extracting solution sprayed into the sampling tube 10 by the extracting solution spraying mechanism 20.

In this embodiment, the number of the extracting solution recovery mechanisms 30 is two, and the two extracting solution recovery mechanisms 30 are oppositely disposed on both sides of the sampling tube 10. Each extracting solution recovering mechanism 30 comprises a recovering barrel 31, a second infusion tube 32, a piston 33, a driving electric cylinder 34, a liquid discharge tube 36, a first one-way valve 37 and a second one-way valve 38, and the lower part of the barrel wall of the recovering barrel 31 is provided with a liquid return port communicated with the inner cavity of the recovering barrel; two liquid guide holes 12 communicated with the inner cavity of the sampling tube 10 are oppositely formed in the side wall of one end of the sampling tube 10 close to the opening 11, and each liquid guide hole 12 is correspondingly communicated with a liquid return port of a recovery barrel 31 of the corresponding extracting solution recovery mechanism 30 through a second liquid conveying tube 32; the recycling bin 31 is a cylindrical bin body, the piston 33 is a cylindrical plug body matched with the inner wall of the recycling bin 31 in the axial direction, the piston 33 is movably arranged in the recycling bin 31 and is opposite to the liquid return port, and a recycling cavity 35 for recycling the bacteria extracting solution is formed in an inner cavity between the piston 33 and the liquid return port in the recycling bin 31; the driving electric cylinder 34 is arranged at the upper part of the recovery barrel 31, and a driving rod of the driving electric cylinder 34 extends into the recovery barrel 31 to be connected with the piston 33; when the driving electric cylinder 34 drives the piston 33 to move in the direction away from the liquid return port, negative pressure is formed in the recovery cavity 35, so that the bacteria extracting solution sprayed on the wound surface is sucked into the recovery cavity 35, and bacteria dissolved in the bacteria extracting solution are also collected into the recovery cavity 35.

The bacteria extract collected in the recovery cavity 35 needs to be poured into a corresponding detection container so as to measure the bacteria quantity, furthermore, the lower part of the wall of the recovery barrel 31 is provided with a liquid outlet communicated with the inner cavity of the recovery barrel, the liquid outlet is opposite to the piston 33, and a liquid outlet pipe 36 is communicated with the liquid outlet and extends to the outside of the recovery barrel 31; when the driving electric cylinder 34 drives the piston 33 to move along the direction close to the liquid discharge port, the bacteria extracting solution in the recovery cavity 35 is discharged through the liquid discharge pipe 36, and the bacteria extracting solution in each recovery barrel 31 can be uniformly collected by placing the corresponding detection container below the liquid discharge pipe 36 for bacteria determination.

Further, a first check valve 37 is provided on the liquid return port; the second check valve 38 is provided on the drain: when the piston 33 moves in the direction away from the liquid return port, the first one-way valve 37 is opened and the second one-way valve 38 is closed, so that the bacteria extracting solution sprayed on the wound surface is sucked into the recovery cavity 35; when the piston 33 is moved in the direction approaching the drain port, the second check valve 38 is opened and the first check valve 37 is closed to discharge the bacteria extract in the collection chamber 35 to the detection container through the drain pipe 36. The first check valve 37 and the second check valve 38 are arranged to prevent external air from entering the recovery cavity 35 through the drain pipe 36 when the piston 33 moves in the direction away from the liquid return port to extract the bacterial extract from the sampling tube 10; and simultaneously, the bacteria extract in the recovery cavity 35 can be prevented from flowing back to the sampling tube 10 when the piston 33 moves in the direction close to the liquid outlet to discharge the bacteria extract in the recovery cavity 35 to the detection container.

In actual manufacturing, the bacteria extraction device of the embodiment of the present invention further includes a controller 40, and the controller 40 is connected to the pressure pump 23, each driving electric cylinder 34, and each first check valve 37 and the second check valve 38 on the recovery bucket 31 to control the above devices. Specifically, be provided with corresponding operating button and display screen on the controller 40, can set for the operating pressure of force (forcing) pump 23 through operating button to adjust the pressure of spraying the bacterium extract on the surface of a wound, effectively wash away the bacterium on the surface of a wound, the operating pressure of force (forcing) pump 23 can show on the display screen, so that operating personnel adjusts. In addition, the controller 40 controls the operating speed of each driving electric cylinder 34, so that the negative pressure in the recovery cavity 35 is controlled by the bacteria extracting solution in the extraction sampling cylinder 10, the extraction speed of the bacteria extracting solution is adjusted, and bacteria brushed off on the wound surface can be better blended into the bacteria extracting solution by adjusting the extraction speed of the bacteria extracting solution according to needs. The controller 40 is connected with the first one-way valve 37 and the second one-way valve 38 on each recycling bin 31 so as to automatically control the opening and closing of the first one-way valve 37 and the second one-way valve 38, and thus, the automatic switching between the processes of extracting the bacteria extracting solution in the sampling tube 10 and discharging the bacteria extracting solution in the recycling bin 31 is realized.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bacteria extraction device, comprising:

the sampling device comprises a sampling tube (10), wherein one end of the sampling tube (10) is provided with an opening (11) used for being buckled on a wound surface to limit a sampling area;

the extracting solution spraying mechanism (20) is arranged corresponding to the sampling cylinder (10), at least part of the extracting solution spraying mechanism (20) extends to the inner cavity of the sampling cylinder (10) and is opposite to the wound surface defined in the sampling cylinder (10) so as to spray bacterial extracting solution to the wound surface defined in the sampling cylinder (10) to wash bacteria on the wound surface and enable the washed bacteria to be dissolved into the bacterial extracting solution;

the extracting solution recovery mechanism (30) is communicated with the inner cavity of the sampling tube (10), and the extracting solution recovery mechanism (30) is used for recovering the bacteria extracting solution sprayed on the wound surface so as to extract bacteria blended into the bacteria extracting solution.

2. The bacteria extraction device according to claim 1, wherein the cross-sectional area of the opening (11) is a predetermined unit area for extracting the extracting fluid recovery means (30) to bacteria in a unit area on a wound surface.

3. The bacteria extraction device according to claim 1, wherein the extraction liquid spraying mechanism (20) comprises:

shower nozzle (21), shower nozzle (21) set up in sampling tube (10), shower nozzle (21) orientation the surface of uncovered (11) is provided with a plurality of nozzles (211), and is a plurality of nozzle (211) with uncovered (11) are relative, with sampling tube (10) uncovered (11) lock when the surface of a wound, to injecing in the surface of a wound spraying bacteria extract in sampling tube (10).

4. The bacteria extraction device of claim 3, wherein the extraction fluid spray mechanism (20) further comprises:

an extract storage tank (22), the extract storage tank (22) being used for storing bacterial extract;

a pressure pump (23) provided in the extraction liquid storage tank (22);

wherein the pressure pump (23) is communicated with the spray head (21) through a first infusion tube (24) so as to pressurize the bacteria extracting solution in the extracting solution storage tank (22) to a preset pressure and deliver the bacteria extracting solution to the spray head (21) through the first infusion tube (24) to spray the bacteria extracting solution to a wound surface defined in the sampling cylinder (10).

5. The bacteria extraction device of claim 3, wherein the cross-section of the sampling cylinder (10) is circular and the spray head (21) is of a disc-shaped configuration adapted to the inner wall of the sampling cylinder (10).

6. The bacteria extraction device according to claim 1, wherein the extraction liquid recovery mechanism (30) comprises:

the recycling tank (31), the wall of the recycling tank (31) is provided with a liquid return port communicated with the inner cavity of the recycling tank;

the side wall of the sampling tube (10) close to one end of the opening (11) is provided with a liquid guide hole (12) communicated with the inner cavity of the sampling tube, and the liquid guide hole (12) is communicated with the liquid return port of the recovery barrel (31) through a second liquid conveying pipe (32) so as to convey the bacteria extracting solution sprayed on the wound surface to the recovery barrel (31).

7. The bacteria extraction device of claim 6, wherein the extraction fluid recovery mechanism (30) further comprises:

the piston (33) is movably arranged in the recovery barrel (31) and is opposite to the liquid return port, and an inner cavity between the piston (33) and the liquid return port in the recovery barrel (31) forms a recovery cavity (35) for recovering the bacteria extracting solution;

the driving electric cylinder (34) is arranged on the recovery barrel (31), and a driving rod of the driving electric cylinder (34) is connected with the piston (33);

wherein the driving electric cylinder (34) drives the piston (33) to move along the direction far away from the liquid return port so as to suck the bacteria extracting solution sprayed on the wound surface into the recovery cavity (35).

8. The bacteria extraction device according to claim 7, wherein the recovery barrel (31) has a liquid outlet opening on the barrel wall and communicating with the inner cavity thereof, the liquid outlet opening is opposite to the piston (33), and the extract recovery mechanism (30) further comprises:

a drain pipe (36), the drain pipe (36) being in communication with the drain port;

wherein the driving electric cylinder (34) drives the piston (33) to move along the direction close to the liquid discharge port so as to discharge the bacteria extract in the recovery cavity (35) through the liquid discharge pipe (36).

9. The bacteria extraction device of claim 8, wherein the extraction fluid recovery mechanism (30) further comprises:

a first check valve (37) arranged on the liquid return port;

a second check valve (38) provided on the drain port:

wherein the first one-way valve (37) is opened and the second one-way valve (38) is closed when the piston (33) moves in the direction away from the liquid return port so that the bacteria extracting solution sprayed on the wound surface is sucked into the recovery cavity (35); when the piston (33) moves in a direction approaching the liquid discharge port, the second one-way valve (38) is opened and the first one-way valve (37) is closed to discharge the bacteria extract in the recovery chamber (35) through the liquid discharge pipe (36).

10. The bacteria extraction device according to claim 1, wherein the extracting solution recovery mechanism (30) is provided in plurality, and the extracting solution recovery mechanisms (30) are arranged around the circumference of the sampling cylinder (10) at intervals and are communicated with the inner cavity of the sampling cylinder (10);

wherein part of the extracting solution recovering mechanism (30) or all of the extracting solution recovering mechanism (30) works to recover the bacteria extracting solution sprayed on the wound surface.