CN109452985B - Semi-automatic sample feeding needle - Google Patents
Semi-automatic sample feeding needle Download PDFInfo
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- CN109452985B CN109452985B CN201811252183.0A CN201811252183A CN109452985B CN 109452985 B CN109452985 B CN 109452985B CN 201811252183 A CN201811252183 A CN 201811252183A CN 109452985 B CN109452985 B CN 109452985B
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- needle
- cylinder body
- rod
- semi
- automatic sample
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61D—VETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS
- A61D7/00—Devices or methods for introducing solid, liquid, or gaseous remedies or other materials into or onto the bodies of animals
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M5/2033—Spring-loaded one-shot injectors with or without automatic needle insertion
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M2005/2026—Semi-automatic, e.g. user activated piston is assisted by additional source of energy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2250/00—Specially adapted for animals
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Vascular Medicine (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a semi-automatic sample feeding needle, which comprises a needle tube, a needle head and a cylinder body, wherein one end of the needle tube is connected with the needle head, the other end of the needle tube is connected with the cylinder body, the cylinder body is externally connected with a rapid pressure rod above the needle tube and the cylinder body through a balance support, the rapid pressure rod is positioned above the needle tube and the cylinder body and is parallel to the needle tube and the cylinder body, the front end of the rapid pressure rod is provided with a brake spring, the brake spring downwards acts on the outer wall of the cylinder body, the rear end of the rapid pressure rod is provided with a speed regulating guide rod, the lower end of the speed regulating guide rod acts inside the cylinder body, and a pull rod for drawing liquid medicine is arranged. The needle is a semi-automatic sample feeding needle, and can trigger the device to rapidly feed samples after the needle is inserted, and the hand does not directly contact the tube wall, so that the expansion caused by heat and the contraction caused by cold of the reagent can be avoided. The semi-automatic sample feeding needle can independently complete the fixed-point, positioning, constant-speed and quantitative drug feeding operation of an animal experimental body by sample feeding of a researcher.
Description
Technical Field
The invention relates to a sample feeding needle, in particular to a semi-automatic sample feeding needle.
Background
A prior liquid medicine sample feeding needle is shown in figures 1 and 2 and comprises a needle tube 1 ', a needle head 2' and a push rod 3 ', wherein the needle tube 1' is made of transparent material with scales. When the experiment is operated, a user holds the liquid medicine bottle by one hand and holds the sample feeding needle by the other hand, the needle head 2 'of the sample feeding needle is inserted into the liquid medicine bottle, the needle tube 1' is held by one hand, the push rod 3 'is pulled by the other hand, and the pulling speed of the push rod 3' is controlled by experience. The sample feeding needle with the structure has the following defects: firstly, the drawing speed of the push rod 3' is not easy to control, and manual control has certain limitation; secondly, when the needle tube 1 'is held by the hand, the finger surface can contact the needle tube 1', which causes the temperature change of the liquid medicine in the tube and may affect the accuracy of the later experiment.
When the medicine is added to the accurate position of the animal experiment, two researchers are needed to fix the animal experiment body for the consistency of the experiment process of each time, the other researcher inserts the needle to the accurate position (such as the brain hippocampus), the needle body is fixed by one hand, and the medicine is fed at a fixed speed by the other hand, which wastes time and labor. The medicine delivery rate depends on hand feeling, and is difficult to be consistent every time, so that the result of quantitative analysis is influenced to a certain degree.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a semi-automatic sample feeding needle with fixed point, positioning, fixed speed and quantification.
The invention provides the following technical scheme:
semi-automatic sample feeding needle, it includes needle tubing and syringe needle, and it still includes jar type body, needle tubing one end is connected with the syringe needle, the needle tubing other end and this body coupling of jar type, this external quick depression bar through a balanced support and top of jar type is connected, quick depression bar is located the top of needle tubing and jar type body, and is parallel with needle tubing and jar type body, quick depression bar's front end is provided with brake spring, and this brake spring acts on jar type body outer wall downwards, quick depression bar's rear end sets up a speed governing guide arm, the lower extreme of speed governing guide arm acts on inside the jar type body, this internal liquid measure pull rod that is used for the pull liquid medicine that is provided with of jar type.
Furthermore, the liquid level pull rod comprises a suction needle, a piston column and a pull rod handle end, one end of the suction needle extends into the needle tube, the other end of the suction needle is connected with one end of the piston column in the cylinder body, and the other end of the piston column is connected with the pull rod handle end outside the cylinder body. The liquid is drawn out of the liquid medicine bottle by drawing force to enter the needle tube from the needle.
Further, the piston post includes the cylinder, overlaps in the piston head of cylinder one end and overlaps in the formulation ring of the cylinder other end, the cover has interior pressure spring on the cylinder between piston head and the formulation ring. The inner spring is convenient to reset.
Furthermore, the end part of the cylinder-shaped body is provided with a fixed knob, a fixed ring is sleeved on the cylinder body between the retaining ring and the fixed knob, and the end part of the fixed ring is abutted against the inner side of the fixed knob. The fixing ring is used for safety, and is opened when in use.
Furthermore, the speed regulation guide rod comprises a screw and a rod head connected with the upper end of the screw, the screw penetrates through the rapid compression bar and pushes against a formulated ring in the cylinder body downwards, and the rod head is positioned above the rapid compression bar.
Furthermore, the balance support is a section bar buckle which supports the cylinder body inside, and the upper end of the section bar buckle is fixedly connected with the quick compression bar.
Compared with the prior art, the invention has the beneficial effects that: the needle is a semi-automatic sample feeding needle, and can trigger the device to rapidly feed samples after the needle is inserted, and the hand does not directly contact the tube wall, so that the expansion caused by heat and the contraction caused by cold of the reagent can be avoided. The semi-automatic sample feeding needle can independently complete the fixed-point, positioning, constant-speed and quantitative drug feeding operation of an animal experimental body by sample feeding of a researcher.
Drawings
Fig. 1 is a schematic structural diagram of a sample feeding needle in the prior art.
Fig. 2 is a schematic diagram of a prior art user operating a sample feeding needle.
FIG. 3 is a schematic structural diagram of the present invention.
In the figure: 1. a needle tube; 2. a needle head; 3. a cylinder-shaped body; 4. a balance bracket; 5. a quick compression bar; 6. a brake spring; 7. a speed regulation guide rod 71, a screw rod 72 and a rod head; 8. the device comprises a liquid level pull rod 81, an aspiration needle 82, a piston column 821, a cylinder 822, a piston head 823, a setting ring 824, an inner pressure spring 825, a fixing ring 83 and a pull rod handle end; 9. and fixing the knob.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 3, the semi-automatic sample feeding needle of the present invention comprises a needle tube 1 and a needle head 2, and further comprises a cylinder-shaped body 3, wherein one end of the needle tube 1 is connected with the needle head 2, the needle head 2 is easy to replace, the other end of the needle tube 1 is connected with the cylinder-shaped body 3, the other end of the needle tube 1 extends into the cylinder-shaped body 3, the two ends are tightly connected, the outside of the cylinder-shaped body 3 is connected with a rapid press rod 5 above through a balance bracket 4, the rapid press rod 5 is tightly fixed and does not move randomly, the rapid press rod 5 is positioned above the needle tube 1 and the cylinder-shaped body 3 and is parallel to the needle tube 1 and the cylinder-shaped body 3, the front end of the rapid press rod 5 is provided with a brake spring 6, the upper end of the brake spring 6 is connected with the bottom wall of the rapid press rod 5, the brake spring 6 acts on the outer wall of the cylinder-shaped body 3 downwards, the rear, a liquid amount pulling rod 8 for pulling the liquid medicine is provided in the cylinder-shaped body 3.
The liquid level pull rod 8 comprises a suction needle 81, a piston column 82 and a pull rod handle end 83, one end of the suction needle 81 extends into the needle tube 1, the other end of the suction needle 81 is connected with one end of the piston column 82 in the cylinder type body 3, and the other end of the piston column 82 is connected with the pull rod handle end 83 outside the cylinder type body 3. When the handle end 83 of the pull rod is held by hand, the liquid is pulled out of the liquid medicine bottle by the pulling force and enters the needle tube 1 from the needle head.
The piston column 82 comprises a cylinder 821, a piston head 822 sleeved at one end of the cylinder 821 and a fixed ring 823 sleeved at the other end of the cylinder 821, wherein an internal compression spring 824 is sleeved on the cylinder 821 between the piston head 822 and the fixed ring 823. When the animal is drawn, the inner spring 824 is pressed, and after the drawing is finished, the liquid medicine is transferred to the animal (when the animal is tested), and the animal can be automatically reset only by lightly pressing the handle end 83 of the pull rod.
The cylinder-type body 3 is provided at an end thereof with a fixing knob 9, and a safety fixing ring 825 is fitted over a cylinder 821 between a stopper ring 823 and the fixing knob 9, and the fixing ring end 83 abuts against the inside of the fixing knob 9.
Function of the fixing knob 9: after the liquid volume pull rod finishes liquid pumping, the fixing knob 9 locks the fixing ring 825 for fixing, the fixing ring 825 is opened when the device is used, and the quick pressing rod 5 is pressed to deliver medicine. (e.g., a safety switch for a pistol, a lot of preparation for the experiment, or multiple delivery procedures, requiring a prior safety shut-down).
The speed regulation guide rod 7 comprises a screw rod 71 and a rod head 72 connected with the upper end of the screw rod 71, the screw rod 71 penetrates through the quick press rod 5 to abut against a limiting ring 823 in the cylinder body 3 downwards, and the rod head 72 is positioned above the quick press rod 5.
A screw rod 71 on the speed regulation guide rod 7 extends into the cylinder body 3, the screw rod 71 can adjust the tightness, and when the screw rod 71 is tightened, a retaining ring 823 below the guide rod 7 can be pressed (the medicine feeding speed can be adjusted), so that the friction force is increased to slow down the medicine feeding speed, otherwise, when the speed regulation guide rod is loosened, the friction force is reduced to speed up the medicine feeding speed.
When the fixing knob 9 is locked, the liquid amount rod 8 is fixed to the fixing ring 825 by pressing the fixing ring 825.
The balance bracket 4 is a section bar buckle which holds the cylinder body 3 inside, and the upper end of the section bar buckle is fixedly connected with the rapid compression bar 5.
Here, the length of the quick press lever 5 is smaller than the sum of the cylinder-shaped body 3 and the needle tube 1. The quick press rod 5 is basically consistent in thickness at the part above the cylinder-shaped body 3 and becomes thinner towards the front end close to the needle tube in sequence.
The needle tube 1 is provided with scales, and the minimum one grid of the scales is accurate to 0.01 mm. The accuracy is high.
The needle is a semi-automatic sample feeding needle, and can trigger the device to rapidly feed samples after the needle is inserted, and the hand does not directly contact the tube wall, so that the expansion caused by heat and the contraction caused by cold of the reagent can be avoided. The semi-automatic sample feeding needle can independently complete the fixed-point, positioning, constant-speed and quantitative drug feeding operation of an animal experimental body by sample feeding of a researcher.
Claims (5)
1. Semi-automatic sample needle that send, it includes needle tubing and syringe needle, its characterized in that: the rapid compression bar is arranged above the needle tube and the cylinder body and is parallel to the needle tube and the cylinder body, a brake spring is arranged at the front end of the rapid compression bar, the brake spring acts downwards on the outer wall of the cylinder body, a speed regulation guide rod is arranged at the rear end of the rapid compression bar, the lower end of the speed regulation guide rod acts inside the cylinder body, the speed regulation guide rod comprises a screw rod and a rod head connected with the upper end of the screw rod, the screw rod penetrates through the rapid compression bar to downwards abut against a formulated ring in the cylinder body, and the rod head is arranged above the rapid compression bar; a liquid level pull rod for pulling the liquid medicine is arranged in the cylinder body; the liquid quantity pull rod comprises a suction needle, a piston column and a pull rod handle end; the piston column comprises a column body, a piston head sleeved at one end of the column body and a fixed ring sleeved at the other end of the column body, wherein an inner pressure spring is sleeved on the column body between the piston head and the fixed ring; the end part of the cylinder body is provided with a fixed knob, a fixed ring is sleeved on the cylinder body between the retaining ring and the fixed knob, and the end part of the fixed ring is abutted against the inner side of the fixed knob.
2. The semi-automatic sample presentation needle of claim 1, wherein: one end of the suction needle extends into the needle tube, the other end of the suction needle is connected with one end of a piston column in the cylinder body, and the other end of the piston column is connected with a handle end of a pull rod outside the cylinder body.
3. The semi-automatic sample presentation needle of claim 1, wherein: the balance support is a section bar buckle which supports the cylinder body, and the upper end of the section bar buckle is fixedly connected with the rapid compression bar.
4. The semi-automatic sample presentation needle of claim 1, wherein: the length of the quick pressing rod is less than the sum of the cylinder body and the needle tube.
5. The semi-automatic sample presentation needle of claim 1, wherein: the needle tube is provided with scales, and the minimum one grid of the scales is accurate to 0.01 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811252183.0A CN109452985B (en) | 2018-10-25 | 2018-10-25 | Semi-automatic sample feeding needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811252183.0A CN109452985B (en) | 2018-10-25 | 2018-10-25 | Semi-automatic sample feeding needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109452985A CN109452985A (en) | 2019-03-12 |
| CN109452985B true CN109452985B (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811252183.0A Active CN109452985B (en) | 2018-10-25 | 2018-10-25 | Semi-automatic sample feeding needle |
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| Country | Link |
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| CN (1) | CN109452985B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113520480B (en) * | 2021-07-14 | 2022-08-30 | 贵州医科大学附属医院 | Specimen sampling device for blood tumor |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4261358A (en) * | 1979-10-01 | 1981-04-14 | Walter Vargas | Automatic syringe plunger |
| GB0814747D0 (en) * | 2008-08-13 | 2008-09-17 | Owen Mumford Ltd | Autoinjection devices |
| EP2460553A1 (en) * | 2010-12-02 | 2012-06-06 | Debiotech S.A. | Device for inserting needles |
| CN103041476B (en) * | 2012-12-04 | 2017-12-12 | 邓源基 | Adjustable metering syringe |
| KR101462438B1 (en) * | 2013-11-07 | 2014-11-17 | 주식회사 메가젠임플란트 | Apparatus for injecting medicine |
| CN205359710U (en) * | 2016-01-29 | 2016-07-06 | 广西壮族自治区农业科学院玉米研究所 | Ration continuous injection ware with adjustable |
| CN106693120A (en) * | 2016-12-27 | 2017-05-24 | 元拓工业设计咨询（天津）有限公司 | Pull rod type needleless injector |
| CN207237050U (en) * | 2017-03-10 | 2018-04-17 | 潘锦霞 | One kind is new can running fire needleless injector |
| CN108721733B (en) * | 2018-06-19 | 2020-10-27 | 青岛大学附属医院 | Painless trace anesthetic injection device |
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2018
- 2018-10-25 CN CN201811252183.0A patent/CN109452985B/en active Active
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| Publication number | Publication date |
|---|---|
| CN109452985A (en) | 2019-03-12 |
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