CN213283095U - One-hand operation syringe negative pressure generating device - Google Patents
One-hand operation syringe negative pressure generating device Download PDFInfo
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- CN213283095U CN213283095U CN202021195770.3U CN202021195770U CN213283095U CN 213283095 U CN213283095 U CN 213283095U CN 202021195770 U CN202021195770 U CN 202021195770U CN 213283095 U CN213283095 U CN 213283095U
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- lever
- syringe
- clamping ring
- clamping groove
- clamping
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Abstract
The utility model provides a negative pressure generating device of a single-hand operated syringe, which comprises a lever part and a snap ring part; the upper end of the lever is provided with a fixing mechanism which is connected with the tail part of the inner core of the syringe; the lower end of the lever is a thumb pressing part; the upper end of the lever is combined with the lower end of the lever through a fulcrum, and an obtuse angle is formed between the upper end of the lever and the lower end of the lever; the support connects the lever part with the clamping ring part, and the clamping ring part comprises a first clamping groove, a second clamping groove, a drop-proof frame and a clamping ring; the clamping ring is in a shape of a notch cylinder and is fixed with the syringe needle cylinder; a second clamping groove is formed in the top end of the clamping ring close to the needle cylinder, and a first clamping groove is formed in the clamping ring in the direction back to the needle cylinder; the first clamping groove extends outwards and is fixed with a slip-off prevention frame. The utility model discloses convenient to use is applicable to 3D and prints the use, and the preparation is novel, and the operation can be realized to the one hand.
Description
Technical Field
The utility model particularly relates to a one-hand operation syringe negative pressure produces device.
Background
In recent years, with the improvement of living standard and the popularization of high-frequency ultrasonic probes, the incidence of Thyroid nodules is increasing year by year, and the Thyroid nodule thin Needle Aspiration Biopsy (TFNAB) guided by ultrasound is a common minimally invasive means for determining the benign and malignant Thyroid nodules. Some patients require negative pressure aspiration to draw enough tissue samples during TFNAB examinations, which requires the aspiration needle to have a negative pressure generating device. Negative pressure aspiration ultrasound-guided thyroid nodule fine needle aspiration biopsy (TFNAB) is primarily produced by a needle that is punctured.
The operation in the prior art is mainly a double-person operation, the current ultrasonic guided thyroid nodule fine needle aspiration biopsy (TFNAB) needle mainly comprises a coaxial needle and a syringe needle, and tissue cells are sucked by capillary siphon force of a needle tube under the condition that negative pressure is not needed. Under the condition that negative pressure is needed, the negative pressure is mainly achieved by the inner core of the drawing syringe, when the double-person operation is carried out, the drawing of the inner core of the drawing syringe by an assistant can influence the needle pointing direction, and tissues can be seriously damaged.
When the puncture needle is operated by a single person, the puncture accuracy is influenced; generally, when the operation is performed, the thumb and the forefinger need to be retracted to the joint of the tail part of the syringe and the inner core, and certain force is needed to maintain the drawing force, so that the operation precision is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides a negative pressure generating device of a single-hand operated syringe. The utility model discloses an utilize lever principle to promote the syringe inner core for reduce the power that the finger was exerted, have and to carry out 3D and print, operate accurate characteristics.
In order to achieve the above purpose, the utility model discloses technical scheme as follows:
a negative pressure generating device of a single-hand operated syringe comprises a lever part and a clamping ring part; the upper end of the lever is provided with a fixing mechanism which is connected with the tail part of the inner core of the syringe; the lower end of the lever is a thumb pressing part; the upper end of the lever is combined with the lower end of the lever through a fulcrum, and an obtuse angle is formed between the upper end of the lever and the lower end of the lever; the fulcrum connects the lever part with the clamping ring part;
the clamping ring part comprises a first clamping groove, a second clamping groove, a drop-proof frame and a clamping ring; the clamping ring is in a shape of a notch cylinder and is fixed with the syringe needle cylinder; a second clamping groove is formed in the top end of the clamping ring close to the needle cylinder, and a first clamping groove is formed in the clamping ring in the direction back to the needle cylinder; the first clamping groove extends outwards and is fixed with a slip-off prevention frame.
Furthermore, the first clamping groove of the clamping ring part is clamped and fixed with the fulcrum of the lever structure.
Furthermore, the second clamping groove is externally connected with a protruding part at the tail end of the needle cylinder, so that the whole structure of the needle cylinder is prevented from sliding downwards.
Has the advantages that: the utility model provides a one-hand operation syringe negative pressure produces device, through utilizing lever principle to be connected lever part and snap ring part through the fulcrum and use, the upper and lower end setting of snap ring lever, can firmly be fixed in whole device on the accurate position on the syringe, lever principle promotes the syringe inner core, reduce the power that the finger was exerted, and can use PLA or ABS material to print this device according to the 3D drawing, realize in time using, the simple operation, the snap ring part is equipped with and ends the frame of taking off, can prevent coming off of lever part when combining with the snap ring part. And the operation of the negative-pressure ultrasound-guided thyroid nodule fine needle aspiration biopsy (TFNAB) can be more accurate, and the requirement of accurate medical treatment is met.
Drawings
Fig. 1 is a schematic view of a snap ring structure of the present invention;
FIG. 2 is a schematic diagram of the lever structure of the present invention;
fig. 3 is a schematic view of the combined and disassembled structure of the snap ring structure and the lever structure of the present invention.
In the figure, 1-snap ring, 2-first snap groove, 3-second snap groove, 4-anti-slip frame, 5-thumb pressing part and 6-fulcrum.
Detailed Description
The present invention is described below with reference to specific examples. It will be understood by those skilled in the art that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention in any way.
A negative pressure generating device for a one-hand operated syringe, as shown in FIGS. 1 to 3, includes a lever portion, a catching groove, a fulcrum portion and a snap ring portion; the upper end of the lever is provided with a fixing mechanism which is connected with the tail part of the inner core of the syringe; the lower end of the lever is a thumb pressing part (5); the upper end of the lever is combined with the lower end of the lever through a fulcrum (6), and an obtuse angle is formed between the upper end of the lever and the lower end of the lever; the fulcrum (6) connects the lever part with the clamping ring part;
the clamping ring part comprises a first clamping groove (2), a second clamping groove (3), a drop-proof frame (4) and a clamping ring (1); the snap ring (1) is in a shape of a notch cylinder and is fixed with the syringe needle cylinder; a second clamping groove (3) is formed in the top end of the clamping ring (1) close to the needle cylinder, and a first clamping groove (2) is formed in the clamping ring (1) in the direction back to the needle cylinder; the first clamping groove (2) extends outwards and is fixedly provided with a slip-off prevention frame.
The first clamping groove (2) of the clamping ring (1) is mutually clamped and fixed with the fulcrum (6) of the lever structure.
The second clamping groove (3) is externally connected with a protruding part at the tail end of the needle cylinder to prevent the whole structure of the needle cylinder from sliding downwards.
The utility model discloses a concrete operating procedure and application method:
first, the device is fixed on the syringe: the protruding part at the tail part of the syringe needle cylinder is aligned with the clamping groove, the notch of the clamping ring is aligned with the syringe needle cylinder, the protruding part and the notch of the clamping ring are pressed together to realize the fixation of the syringe and the clamping ring, and the fulcrum is placed into the first clamping groove to fix the lever part and the clamping ring part;
secondly, negative pressure is generated: the negative pressure is needed to be used in the puncture process, the thumb is moved to the thumb pressing position at the lower end of the lever, the lever is pressed to the needle cylinder wall by the thumb with certain force according to the needed negative pressure, the thumb is released to press, and the negative pressure can disappear;
finally, the device is dismantled and reused: the device and the injector are detached, and can be reused if necessary, but the device needs to be sterilized again when being reused, so that the device can be used next time;
in the mission of ocean, polar region, military affairs or space exploration, can use PLA or ABS material to print this device according to the 3D drawing to need the disinfection rear to use this device after printing the completion, print the weight that can alleviate the carrying object article through 3D, convenient and fast.
Claims (3)
1. A kind of one-hand operation syringe negative pressure produces the device, characterized by that: comprises a lever part and a snap ring part; the upper end of the lever is provided with a fixing mechanism which is connected with the tail part of the inner core of the syringe; the lower end of the lever is a thumb pressing part; the upper end of the lever is combined with the lower end of the lever through a fulcrum, and an obtuse angle is formed between the upper end of the lever and the lower end of the lever; the fulcrum connects the lever part with the clamping ring part; the clamping ring part comprises a first clamping groove, a second clamping groove, a drop-proof frame and a clamping ring; the clamping ring is in a shape of a notch cylinder and is fixed with the syringe needle cylinder; a second clamping groove is formed in the top end of the clamping ring close to the needle cylinder, and a first clamping groove is formed in the clamping ring in the direction back to the needle cylinder; the first clamping groove extends outwards and is fixed with a slip-off prevention frame.
2. The negative pressure generating device of a one-hand-operated syringe as claimed in claim 1, wherein the first catching groove of the catching ring portion and the fulcrum of the lever portion are engaged and fixed with each other.
3. The negative pressure generating device for the single-hand operated injector of claim 1, wherein the second locking groove is externally connected with a protruding part at the tail end of the syringe to prevent the whole structure of the syringe from sliding down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021195770.3U CN213283095U (en) | 2020-06-24 | 2020-06-24 | One-hand operation syringe negative pressure generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021195770.3U CN213283095U (en) | 2020-06-24 | 2020-06-24 | One-hand operation syringe negative pressure generating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213283095U true CN213283095U (en) | 2021-05-28 |
Family
ID=76019081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021195770.3U Active CN213283095U (en) | 2020-06-24 | 2020-06-24 | One-hand operation syringe negative pressure generating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213283095U (en) |
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2020
- 2020-06-24 CN CN202021195770.3U patent/CN213283095U/en active Active
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