CN216876434U - Negative pressure suction injector for puncture - Google Patents
Negative pressure suction injector for puncture Download PDFInfo
- Publication number
- CN216876434U CN216876434U CN202122889120.XU CN202122889120U CN216876434U CN 216876434 U CN216876434 U CN 216876434U CN 202122889120 U CN202122889120 U CN 202122889120U CN 216876434 U CN216876434 U CN 216876434U
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- CN
- China
- Prior art keywords
- needle
- core rod
- hole
- puncture
- needle cylinder
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 238000002788 crimping Methods 0.000 claims 2
- 230000006872 improvement Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 3
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000002380 cytological effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000013399 early diagnosis Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013188 needle biopsy Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000007170 pathology Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides a negative pressure suction injector for puncture, which comprises an injection needle, a needle cylinder, a core rod and a needle cap; the head end of the syringe is provided with a conical needle sleeve, the tail end of the injection needle is sleeved on the conical needle sleeve, and the injection needle is communicated with the inner cavity of the syringe; the tail end of the needle cylinder is provided with an outer sleeve curled edge part which protrudes outwards, and the needle cylinder is provided with a needle cylinder through hole at a position close to the outer sleeve curled edge part; the head end of the core rod is provided with a piston head which is positioned in the inner cavity of the needle cylinder; the core rod is provided with a plurality of core rod through holes at equal intervals along the length direction of the core rod; the needle cylinder through hole is matched with the core rod through hole; the needle cap is matched with the needle cylinder through hole and the core rod through hole for use; one of the core rod through holes is aligned with the needle cylinder through hole, and the needle cap passes through the core rod through hole and the needle cylinder through hole. The utility model can effectively help the clinician to improve the fine needle puncture efficiency, greatly reduce the interference of factors of assistant proficiency and adaptability, make the fine needle puncture suction operation more concise and convenient, effectively reduce the occurrence of puncture complications and improve the puncture accuracy.
Description
Technical Field
The utility model relates to an injector, in particular to a negative pressure suction injector for puncture.
Background
With the development of evidence-based medicine, fine needle biopsy is increasingly popular in clinic. Many diseases can be diagnosed unequivocally by small fine needle punctures. Most solid tumors require repeated lifting, inserting and rotating during fine needle puncture, and certain negative pressure suction to ensure that enough cells can be obtained to meet the cytological diagnosis requirement of the pathology department. The currently common negative pressure suction method in clinic is that an injector is connected to the tail part of a puncture needle, and when a doctor operates to puncture, an assistant is responsible for pulling the injector to a certain negative pressure capacity and synchronously lifting, inserting and rotating with the doctor.
The existing clinical use method is that an injector is connected to the tail of a puncture needle, and when a doctor operates the puncture needle to puncture, an assistant is responsible for pulling the injector to a certain negative pressure capacity and synchronously lifting, inserting and rotating with the doctor. Such operation requires a very high degree of default between the assistant and the operator, otherwise the two persons do not act in coordination, so that the force for lifting and inserting and rotating the puncture needle is not enough, sufficient cells cannot be obtained, and even the puncture needle may be separated from the injector, or the puncture needle may damage the surrounding vital organs by accidental force.
Accordingly, there is a need for improvements in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defect that an assistant is required to pull back a core rod of the syringe in real time to ensure certain negative pressure suction force in the process of fine needle puncture negative pressure suction of the existing syringe, and provides the syringe which can be independently completed by a doctor and has fixed negative pressure suction force in the process of fine needle puncture negative pressure suction on the premise of not adding any additional device.
In order to solve the technical problem, the utility model provides a negative pressure suction injector for puncture, which comprises an injection needle, a needle cylinder, a core bar and a needle cap;
the head end of the syringe is provided with a conical needle sleeve, the tail end of the injection needle is sleeved on the conical needle sleeve, and the injection needle is communicated with the inner cavity of the syringe;
the tail end of the needle cylinder is provided with an outer sleeve curled part protruding outwards, and the needle cylinder is provided with a needle cylinder through hole at a position close to the outer sleeve curled part;
the head end of the core rod is provided with a piston head which is positioned in the inner cavity of the needle cylinder;
the core rod is provided with a plurality of core rod through holes at equal intervals along the length direction of the core rod;
the needle cylinder through hole is matched with the core rod through hole;
the needle cap is matched with the needle cylinder through hole and the core rod through hole for use; one of the core rod through holes is aligned with the needle cylinder through hole, and the needle cap passes through the core rod through hole and the needle cylinder through hole.
As an improvement of the negative pressure suction syringe for puncture of the present invention:
and a pull ring is arranged on the side wall of the needle cap.
As an improvement of the negative pressure suction syringe for puncture of the present invention:
the needle cap, the needle cylinder through hole and the core rod have the same diameter.
As an improvement of the negative pressure suction syringe for puncture of the present invention:
the needle cap tail end is provided with the outside bellied fender ring, and the diameter of fender ring is greater than the diameter of needle cap.
As an improvement of the negative pressure suction syringe for puncture of the present invention:
the core rod is provided with a notch at the position close to the head end.
As an improvement of the negative pressure suction syringe for puncture of the present invention:
the tail end of the core rod is provided with a handle.
The negative pressure suction injector for puncture has the technical advantages that:
the utility model can effectively help the clinician to improve the fine needle puncture efficiency, greatly reduce the interference of factors of assistant proficiency and adaptability, make the fine needle puncture suction operation more concise and convenient, provide help for the popularization of evidence-based medicine, the popularization of fine needle puncture and the early diagnosis and early treatment of diseases, and simultaneously can also effectively reduce the occurrence of puncture complications and improve the puncture accuracy.
The injector of the utility model is a disposable injector, compared with the common disposable injector, the injector has no additional device, has low production cost, can be widely popularized and used, and is greatly convenient for clinicians. At the same time, the syringe retains all the functions of a common disposable syringe.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic view of the structure of the negative pressure aspiration syringe for centesis according to the present invention;
fig. 2 is an exploded view of fig. 1.
Detailed Description
The utility model will be further described with reference to specific examples, but the scope of the utility model is not limited thereto.
Example 1, a negative pressure aspiration syringe for puncture, as shown in fig. 1 to 2, includes an injection needle 1, a cylinder 2, a core rod 3, and a needle cap 4.
The injection needle 1 is a hollow needle body;
the head end of the syringe 2 is provided with a conical needle sleeve 21, the tail end of the injection needle 1 is sleeved on the conical needle sleeve 21 so as to be fixedly connected with the head end of the syringe 2, and the injection needle 1 is communicated with the inner cavity of the syringe 2;
the tail end of the needle cylinder 2 is provided with an outer sleeve curling part 22 which protrudes outwards, and the needle cylinder 2 is provided with a needle cylinder through hole 23 which runs through the side wall of the needle cylinder 2 at a position close to the outer sleeve curling part 22 (namely close to the tail end of the needle cylinder 2);
the head end of the core rod 3 is provided with a piston head 31, and the piston head 31 is positioned in the inner cavity of the needle cylinder 2; the handle 32 is arranged at the tail end of the core bar 3, so that a user can push and pull the core bar 3 conveniently;
the core rod 3 is provided with a plurality of core rod through holes 33 at equal intervals along the length direction;
the needle cylinder through hole 23 is matched with the core rod through hole 33, and the diameters of the needle cylinder through hole and the core rod through hole are the same;
the needle cap 4 is used in cooperation with the needle cylinder through hole 23 and the core rod through hole 33, the diameter of the needle cap 4 is the same as that of the needle cylinder through hole 23 and the core rod 3, and after one of the core rod through holes 33 is aligned with the needle cylinder through hole 23, the head end of the needle cap 4 penetrates through the core rod through hole 33 and the needle cylinder through hole 23, so that the relative positions of the needle cylinder 2 and the core rod 3 can be fixed, and the suction quantity of the needle cylinder 2 is always maintained at a certain fixed level.
The core rod 3 is provided with a notch 34 at a position close to the head end (namely close to the piston head 31); the notch 34 can serve as a mark to prevent the user from pulling the entire core rod 3 out of the cylinder 2.
The tail end of the needle cap 4 is provided with a baffle ring 41 protruding outwards, the diameter of the baffle ring 41 is slightly larger than that of the needle cap 4, and the baffle ring 41 can prevent the needle cap 4 from being inserted into the core bar through hole 33 and the needle cylinder through hole 23 too much to cause the needle cap 4 to penetrate out integrally; the needle cap 4 is provided with a pull ring 42 on the sidewall, and a user can pull the needle cap 4 through the pull ring 42.
The using method of the utility model comprises the following steps:
in the process of fine needle puncture, after an operator arranges the injection needle 1 in place, an assistant connects the syringe 2 of the utility model and the injection needle 1 compactly. The assistant pulls the injector core rod 3 to a certain volume according to the actual requirement, and one of the core rod through holes 33 is aligned with the syringe through hole 23; then, the cap 4 with the pull ring 42 is inserted into the stem through hole 33 and the cylinder through hole 23, thereby fixing the relative positions of the cylinder 2 and the stem 3 so that the suction amount of the cylinder 2 is always maintained at a certain fixed level.
After the assistant finishes fixing, the operation doctor can carry out multi-azimuth, multi-angle, freely repeatedly lifting, inserting, rotating to the focus by one person without being affected. After the puncture is finished, the assistant pulls the pull ring 42 on the needle cap 4 with fingers to pull out the needle cap 4, the core bar 3 is reset, the negative pressure in the needle cylinder 2 disappears immediately, and the doctor operates to pull out the puncture needle to smear and fix the needle-absorbed substances.
The injection needle 1 adopts a 7-gauge needle head (0.7mm, black), and can be directly used for puncture and suction under the condition of lacking a special puncture needle or emergency.
Finally, it is also noted that the above-mentioned lists merely illustrate a few specific embodiments of the utility model. It is obvious that the utility model is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the utility model.
Claims (6)
1. Negative pressure suction syringe is used in puncture, its characterized in that: comprises an injection needle (1), a syringe (2), a core bar (3) and a needle cap (4);
the head end of the syringe (2) is provided with a conical needle sleeve (21), the tail end of the injection needle (1) is sleeved on the conical needle sleeve (21), and the injection needle (1) is communicated with the inner cavity of the syringe (2);
the tail end of the needle cylinder (2) is provided with an outer sleeve crimping part (22) which protrudes outwards, and the needle cylinder (2) is provided with a needle cylinder through hole (23) at a position close to the outer sleeve crimping part (22);
the head end of the core rod (3) is provided with a piston head (31), and the piston head (31) is positioned in the inner cavity of the needle cylinder (2);
the core rod (3) is provided with a plurality of core rod through holes (33) at equal intervals along the length direction;
the needle cylinder through hole (23) is matched with the core rod through hole (33);
the needle cap (4) is matched with the needle cylinder through hole (23) and the core rod through hole (33) for use; one core rod through hole (33) is aligned with the needle cylinder through hole (23), and the needle cap (4) penetrates through the core rod through hole (33) and the needle cylinder through hole (23).
2. The aspiration syringe for puncture according to claim 1, characterized in that:
the side wall of the needle cap (4) is provided with a pull ring (42).
3. The aspiration syringe for puncture according to claim 2, characterized in that:
the needle cap (4), the needle cylinder through hole (23) and the core rod (3) have the same diameter.
4. The aspiration syringe for puncture according to claim 3, characterized in that:
the tail end of the needle cap (4) is provided with a baffle ring (41) protruding outwards, and the diameter of the baffle ring (41) is larger than that of the needle cap (4).
5. The aspiration syringe for puncture according to claim 4, characterized in that:
the core rod (3) is provided with a notch (34) at the position close to the head end.
6. The aspiration syringe for puncture according to claim 5, characterized in that:
the tail end of the core rod (3) is provided with a handle (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122889120.XU CN216876434U (en) | 2021-11-24 | 2021-11-24 | Negative pressure suction injector for puncture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122889120.XU CN216876434U (en) | 2021-11-24 | 2021-11-24 | Negative pressure suction injector for puncture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216876434U true CN216876434U (en) | 2022-07-05 |
Family
ID=82202243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122889120.XU Expired - Fee Related CN216876434U (en) | 2021-11-24 | 2021-11-24 | Negative pressure suction injector for puncture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216876434U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115990303A (en) * | 2023-03-23 | 2023-04-21 | 山东安得医疗用品股份有限公司 | Sliding block type negative pressure suction injector |
-
2021
- 2021-11-24 CN CN202122889120.XU patent/CN216876434U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115990303A (en) * | 2023-03-23 | 2023-04-21 | 山东安得医疗用品股份有限公司 | Sliding block type negative pressure suction injector |
| CN115990303B (en) * | 2023-03-23 | 2023-06-27 | 山东安得医疗用品股份有限公司 | Sliding block type negative pressure suction injector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220705 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |