CN209884220U - Puncture continuous negative pressure suction needle cylinder - Google Patents
Puncture continuous negative pressure suction needle cylinder Download PDFInfo
- Publication number
- CN209884220U CN209884220U CN201920533917.6U CN201920533917U CN209884220U CN 209884220 U CN209884220 U CN 209884220U CN 201920533917 U CN201920533917 U CN 201920533917U CN 209884220 U CN209884220 U CN 209884220U
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- needle cylinder
- push rod
- negative pressure
- piston push
- piston
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Abstract
The utility model relates to the technical field of medical appliances, and discloses a puncture continuous negative pressure suction needle cylinder which comprises a needle cylinder and a piston push rod, wherein one end of the piston push rod is provided with a piston, and the other end of the piston push rod is a handle; the piston push rod is longitudinally provided with a sawtooth-shaped gap; the upper end surface of the needle cylinder is provided with a rotatable stop piece which is correspondingly clamped with the serrated notch. The utility model has the advantages of reasonable design, easy operation is convenient, can produce in the use and last the negative pressure, makes medical staff can accomplish the puncture operation by one hand.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a puncture continuous negative pressure suction needle cylinder.
Background
Syringes are common medical devices used in needle biopsies. Medical staff determines the position and the size of a focus under the guidance of technical means such as CT, X-ray and the like, after disinfection and anesthesia, a biopsy puncture needle is used for puncturing to the focus from a marking point, and a negative pressure injector is used for sampling and submitting a tissue for examination. The existing puncture usually uses a common syringe for sampling, two persons are needed to cooperate during operation, one person punctures and searches a focus point, the other person pulls out a syringe piston which exhausts air in advance, and focus tissues are sucked into the syringe under the action of negative pressure. Such a sampling method requires precise cooperation between two medical staff and is difficult to operate. And the operator is required to have better arm strength and physical strength and keep the same body position so as to prevent the puncture depth and angle from changing. Therefore, the prior art is in need of improvement.
SUMMERY OF THE UTILITY MODEL
To the problems existing in the prior art, the utility model aims to provide a puncture continuous negative pressure suction needle cylinder. The syringe can generate continuous negative pressure in the using process, so that medical workers can complete puncture operation by one hand.
The utility model discloses a realize above-mentioned purpose, take following technical scheme to realize:
a puncture continuous negative pressure suction needle cylinder comprises a needle cylinder and a piston push rod, wherein one end of the piston push rod is provided with a piston, and the other end of the piston push rod is provided with a handle; the piston push rod is longitudinally provided with a sawtooth-shaped gap; the upper end surface of the needle cylinder is provided with a rotatable stop piece which is correspondingly clamped with the serrated notch.
Preferably, the middle part of the piston push rod is of a four-core rod structure.
Preferably, the indentations are provided in any one of the four core bars.
Preferably, the upper end surface of the needle cylinder extends towards two sides to form an ear part respectively, and the rotatable blocking sheet is arranged on the ear part.
Preferably, the front end of the syringe is provided with a needle.
When the piston push rod is used, the piston push rod is pulled to a required position, so that negative pressure is generated. Then the piston push rod is rotated to ensure that the sawtooth-shaped gap is meshed with the separation blade, and the separation blade fixes the relative position of the needle cylinder and the piston push rod at the moment to generate continuous negative pressure, so that medical workers can finish puncture operation by one hand.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model has the advantages of reasonable design, easy operation is convenient, can produce in the use and last the negative pressure, makes medical staff can accomplish the puncture operation by one hand.
Drawings
FIG. 1 is a schematic structural view of a continuous negative pressure aspiration syringe for puncture according to the present invention;
FIG. 2 is a schematic view of an exploded structure of a puncture continuous negative pressure suction syringe of the present invention;
FIG. 3 is a schematic perspective view of the syringe of the present invention;
figure 4 is a top view of the syringe of the present invention.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Referring to FIGS. 1-4: a puncture continuous negative pressure suction syringe comprises a syringe 1 and a piston push rod 2, wherein one end of the piston push rod 2 is provided with a piston 21, and the other end is provided with a handle 22. The piston push rod 2 is provided with a sawtooth-shaped notch 23 in the longitudinal direction. The upper end surface of the needle cylinder 1 is provided with a rotatable stop sheet 11 which is correspondingly clamped with the sawtooth-shaped gap 23.
The middle part of the piston push rod 2 is provided with a four-core rod structure 24. Indentations 23 are provided in any of the four core bars.
The upper end surface of the syringe 1 extends towards two sides to form ear parts 12 respectively, and the rotatable blocking sheet 11 is arranged on the ear parts 12.
The front end of the syringe 1 is provided with a needle head 3.
When the piston push rod is used, the piston push rod is pulled to a required position, so that negative pressure is generated. Then the piston push rod is rotated to ensure that the sawtooth-shaped gap is meshed with the separation blade, and the separation blade fixes the relative position of the needle cylinder and the piston push rod at the moment to generate continuous negative pressure, so that medical workers can finish puncture operation by one hand.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model has the advantages of reasonable design, easy operation is convenient, can produce in the use and last the negative pressure, makes medical staff can accomplish the puncture operation by one hand.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the description should not be construed as a limitation to the present invention.
Claims (5)
1. A puncture continuous negative pressure suction needle cylinder comprises a needle cylinder and a piston push rod, wherein one end of the piston push rod is provided with a piston, and the other end of the piston push rod is provided with a handle; the piston is characterized in that the piston push rod is longitudinally provided with a sawtooth-shaped gap; the upper end surface of the needle cylinder is provided with a rotatable stop piece which is correspondingly clamped with the serrated notch.
2. The needle cylinder of claim 1, wherein the piston rod has a four-core rod structure in the middle.
3. The needle cylinder of claim 2, wherein the indentations are formed in any one of the four core pins.
4. The needle cylinder of claim 1, wherein the upper end surface of the needle cylinder extends to both sides to form an ear, and the rotatable blocking sheet is disposed on the ear.
5. The needle cylinder of claim 1, wherein the needle head is arranged at the front end of the needle cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920533917.6U CN209884220U (en) | 2019-04-17 | 2019-04-17 | Puncture continuous negative pressure suction needle cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920533917.6U CN209884220U (en) | 2019-04-17 | 2019-04-17 | Puncture continuous negative pressure suction needle cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209884220U true CN209884220U (en) | 2020-01-03 |
Family
ID=69019203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920533917.6U Active CN209884220U (en) | 2019-04-17 | 2019-04-17 | Puncture continuous negative pressure suction needle cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209884220U (en) |
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2019
- 2019-04-17 CN CN201920533917.6U patent/CN209884220U/en active Active
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