CN214781819U - Syringe suitable for draw culture in blood culture bottle - Google Patents
Syringe suitable for draw culture in blood culture bottle Download PDFInfo
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- CN214781819U CN214781819U CN202120738005.XU CN202120738005U CN214781819U CN 214781819 U CN214781819 U CN 214781819U CN 202120738005 U CN202120738005 U CN 202120738005U CN 214781819 U CN214781819 U CN 214781819U
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- nipple
- needle
- blood culture
- liquid suction
- extracting
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Abstract
The utility model relates to the technical field of injectors, in particular to an injector suitable for extracting cultures in a blood culture bottle, which comprises a needle head, a nipple, a needle cylinder and a piston, wherein the needle cylinder and the inside of the nipple are provided with a first clapboard which divides the inner space of the injector into a pressure relief cavity and a liquid suction cavity, and the piston is arranged in the liquid suction cavity and is in sealing sliding fit with the inner wall of the liquid suction cavity; and a conversion joint for independently communicating the needle head with the pressure relief cavity or the liquid suction cavity is arranged between the needle head and the nipple. When the sample, can communicate syringe needle and pressure release chamber or imbibition chamber alone through control crossover sub, can discharge the gas in the blood culture bottle earlier in the pressure release chamber, absorb the sample again after pressure discharges, can prevent that the interior mixture of bottle from outwards spouting, improves the sample security.
Description
Technical Field
The utility model relates to the technical field of injectors, in particular to an injector suitable for draw culture in a blood culture bottle.
Background
The blood culture is an artificial culture method which inoculates a fresh isolated blood specimen on a nutrient medium, enables bacteria with higher nutrient requirements to grow and reproduce under the conditions of certain temperature, humidity and the like, and identifies the bacteria, thereby determining pathogenic bacteria. At present, a blood culture bottle is generally adopted for blood culture, but a problem exists when a sample is taken after the blood culture is finished, because bacteria in the blood culture bottle can generate gas in the blood culture process, the air pressure in the bottle is increased, and when a sampling injector is adopted for sampling, the mixture in the bottle can be sprayed outwards under the action of the air pressure, so that pollution is easily caused.
Disclosure of Invention
In view of this, an object of the present invention is to provide an injector suitable for extracting a culture in a blood culture bottle, which can discharge gas in the blood culture bottle into a pressure relief chamber during sampling, thereby preventing mixture in the bottle from being sprayed out, and improving sampling safety.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides an injector suitable for extracting cultures in a blood culture bottle, which comprises a needle head, a nipple, a needle cylinder and a piston, wherein the needle cylinder and the inside of the nipple are provided with a first clapboard which divides the inner space of the injector into a pressure relief cavity and a liquid suction cavity, and the piston is arranged in the liquid suction cavity and is in sealing sliding fit with the inner wall of the liquid suction cavity;
and a conversion joint for independently communicating the needle head with the pressure relief cavity or the liquid suction cavity is arranged between the needle head and the nipple.
Further, crossover sub one end with syringe needle fixed connection, the other end with the sealed and swivelling joint of nipple opening, the crossover sub radially is equipped with the regulating plate along it, the regulating plate towards be equipped with in the nipple one side and be used for preventing the second baffle of decompression chamber and imbibition chamber intercommunication, be equipped with the through-hole on the regulating plate, the through-hole is located one side of second baffle.
Furthermore, one side edge of the second partition board is fixedly connected to the adjusting board along the diameter direction of the adjusting board.
Furthermore, a sealing gasket is arranged on the upper end face of the second partition plate.
Furthermore, a sealing baffle plate which is matched with the sealing gasket in a sealing manner is arranged on one side edge of the opening end of the nipple of the first partition plate.
Furthermore, the nipple open end is equipped with the recess along its circumference, be equipped with on the crossover sub with recess sliding fit's protruding edge.
Furthermore, sealing films are arranged in the groove and the convex edge.
Further, the pressure relief cavity is positioned at the open end of the needle cylinder and is closed.
The beneficial effects of the utility model reside in that:
when the sample, can communicate syringe needle and pressure release chamber or imbibition chamber alone through control crossover sub, can discharge the gas in the blood culture bottle earlier in the pressure release chamber, absorb the sample again after pressure discharges, can prevent that the interior mixture of bottle from outwards spouting, improves the sample security.
Drawings
In order to make the purpose, technical scheme and beneficial effect of the utility model clearer, the utility model provides a following figure explains:
FIG. 1 is a schematic view of a syringe needle of the syringe for extracting a culture from a blood culture bottle according to the present invention, the syringe needle being in communication with a pressure relief chamber;
FIG. 2 is a schematic view of the syringe needle of the syringe for extracting the culture in the blood culture bottle of the present invention communicating with the liquid suction chamber;
FIG. 3 is an enlarged view of A in FIG. 1;
FIG. 4 is a schematic view of the connection between the adjustment plate and the second partition plate.
Description of reference numerals:
1-a needle head; 2-nipple; 3-a needle cylinder; 4-a piston; 5-a first separator; 6-pressure relief cavity; 7-a liquid suction cavity; 8-a crossover joint; 9-adjusting plate; 10-a second separator; 11-a through hole; 12-a seal pad; 13-sealing the baffle; 14-a groove; 15-convex edge.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
As shown in fig. 1-2, a schematic diagram of an embodiment of an injector suitable for extracting a culture in a blood culture bottle according to the present invention includes a needle 1, a nipple 2, a needle cylinder 3 and a piston 4, wherein the needle cylinder 3 and the nipple 2 are internally provided with a first partition plate 5, the first partition plate 5 divides the internal space of the injector into a pressure relief cavity 6 and a liquid suction cavity 7, and the piston 5 is arranged in the liquid suction cavity 7 and is in a sealing sliding fit with the inner wall of the liquid suction cavity 7;
a conversion joint 8 for independently communicating the needle 1 with the pressure relief cavity 6 or the liquid suction cavity 7 is arranged between the needle 1 and the nipple.
When the sample, can communicate syringe needle and pressure release chamber or imbibition chamber alone through control crossover sub, can discharge the gas in the blood culture bottle earlier in the pressure release chamber, absorb the sample again after pressure discharges, can prevent that the interior mixture of bottle from outwards spouting, improves the sample security.
Further, 8 one ends of crossover sub of this embodiment and 1 fixed connection of syringe needle, the other end and 2 openings of nipple are sealed and are rotated and be connected, and crossover sub 8 radially is equipped with regulating plate 9 along it, and regulating plate 9 is equipped with the second baffle 10 that is used for preventing to let out pressure chamber 6 and imbibition chamber 7 intercommunication towards nipple 2's one side, is equipped with through-hole 11 on the regulating plate 9, and through-hole 11 is located one side of second baffle 10. When sampling, the adapter 8 is rotated to enable the needle 1 to be communicated with the pressure relief cavity 7 firstly, the needle 1 is inserted into the blood culture bottle to relieve the air pressure in the bottle, after the pressure relief is completed, the adapter 8 is rotated to enable the needle 1 to be communicated with the liquid suction cavity 7, and then liquid suction sampling is carried out.
Further, as shown in fig. 4, one side edge of the second partition plate 10 of the present embodiment is fixed to the adjusting plate 9 along the diameter direction of the adjusting plate 9. So set up and to separate into two parts regulating plate 9, one side is equipped with the through-hole that steerable syringe needle 1 and decompression chamber 7 or imbibition chamber 7 communicate wherein, and the opposite side is airtight, and when control syringe needle 1 and decompression chamber 7 were linked together, second baffle 10 can prevent syringe needle 1 and imbibition chamber 7 to communicate, and vice versa the same.
Further, the second separator 10 of the present embodiment is provided with a gasket 12 on the upper end surface. The gasket 12 can increase the sealing effect of the second separator 10.
Further, a sealing baffle 13 which is in sealing fit with the sealing gasket 12 is arranged on one side edge of the first partition 5 positioned at the opening end of the nipple 2. The sealing baffle 13 can be used for cooperating with the sealing gasket 12 to increase the sealing contact area of the sealing gasket 12, and further enhance the sealing effect.
Further, the opening end of the nipple 2 of the present embodiment is provided with a groove 14 along the circumferential direction thereof, and the adapter 8 is provided with a convex edge 15 which is in sliding fit with the groove 14. The convex edge 15 is matched with the groove 14 in a sliding and rotating mode, and the structure is simple and easy to manufacture. Similarly, the groove 14 may be disposed on the adapter 8, and the convex edge may be disposed on the nipple 2, which will not be described again.
Further, the sealing films are arranged in the groove 14 and the convex edge 15 of the present embodiment. The sealing performance of the device can be enhanced.
Further, the pressure relief chamber 6 of the present embodiment is located at the open end of the barrel 3 and is closed. The closed open end can directly discharge a small amount of gas in the blood culture bottle into the pressure relief cavity 7 to prevent the gas from leaking. Of course, the pressure relief chamber 7 may be connected to a dedicated pressure relief space by a pipe.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (8)
1. An injector suitable for extracting cultures from blood culture bottles, comprising a needle (1), a nipple (2), a needle cylinder (3) and a piston (4), characterized in that: a first partition plate (5) is arranged inside the needle cylinder (3) and the nipple (2), the first partition plate (5) divides the inner space of the injector into a pressure relief cavity (6) and a liquid suction cavity (7), and the piston (4) is arranged in the liquid suction cavity (7) and is in sealing sliding fit with the inner wall of the liquid suction cavity (7);
a conversion joint (8) which is used for independently communicating the needle head (1) with the pressure relief cavity (6) or the liquid suction cavity (7) is arranged between the needle head (1) and the nipple.
2. A syringe suitable for use in extracting culture from a blood culture flask according to claim 1, wherein: crossover sub (8) one end with syringe needle (1) fixed connection, the other end with nipple (2) opening is sealed and rotate the connection, crossover sub (8) radially is equipped with regulating plate (9) along it, regulating plate (9) towards be equipped with in the one side of nipple (2) and be used for preventing second baffle (10) of decompression chamber (6) and imbibition chamber (7) intercommunication, be equipped with through-hole (11) on regulating plate (9), through-hole (11) are located one side of second baffle (10).
3. A syringe suitable for use in extracting culture from a blood culture flask according to claim 2, wherein: one side edge of the second partition plate (10) is fixedly connected to the adjusting plate (9) in the diameter direction of the adjusting plate (9).
4. A syringe suitable for use in extracting culture from a blood culture flask according to claim 2, wherein: and a sealing gasket (12) is arranged on the upper end surface of the second partition plate (10).
5. A syringe suitable for use in extracting culture from a blood culture flask according to claim 4, wherein: the first partition plate (5) is positioned on one side edge of the opening end of the nipple (2) and is provided with a sealing baffle plate (13) which is in sealing fit with the sealing gasket (12).
6. A syringe suitable for use in extracting culture from a blood culture flask according to claim 1, wherein: the nipple (2) open end is equipped with recess (14) along its circumference, be equipped with on crossover sub (8) with recess (14) sliding fit's protruding edge (15).
7. A syringe suitable for use in extracting culture from a blood culture flask according to claim 6, wherein: sealing films are arranged in the groove (14) and the convex edge (15).
8. A syringe suitable for use in extracting culture from a blood culture flask according to claim 1, wherein: the pressure relief cavity (6) is positioned at the open end of the needle cylinder (3) and is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120738005.XU CN214781819U (en) | 2021-04-12 | 2021-04-12 | Syringe suitable for draw culture in blood culture bottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120738005.XU CN214781819U (en) | 2021-04-12 | 2021-04-12 | Syringe suitable for draw culture in blood culture bottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214781819U true CN214781819U (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120738005.XU Active CN214781819U (en) | 2021-04-12 | 2021-04-12 | Syringe suitable for draw culture in blood culture bottle |
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| Country | Link |
|---|---|
| CN (1) | CN214781819U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414308A (en) * | 2022-03-28 | 2022-04-29 | 深圳市帝迈生物技术有限公司 | Sampling device and sampling method of sample analyzer |
-
2021
- 2021-04-12 CN CN202120738005.XU patent/CN214781819U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414308A (en) * | 2022-03-28 | 2022-04-29 | 深圳市帝迈生物技术有限公司 | Sampling device and sampling method of sample analyzer |
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