CN111282082A - High-pressure syringe - Google Patents
High-pressure syringe Download PDFInfo
- Publication number
- CN111282082A CN111282082A CN201811495642.8A CN201811495642A CN111282082A CN 111282082 A CN111282082 A CN 111282082A CN 201811495642 A CN201811495642 A CN 201811495642A CN 111282082 A CN111282082 A CN 111282082A
- Authority
- CN
- China
- Prior art keywords
- piston
- guide rod
- cavity
- cylinder
- needle
- Prior art date
- 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.)
- Pending
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Classifications
-
- 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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
-
- 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
- A61M5/007—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 for contrast media
-
- 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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M2005/14506—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons mechanically driven, e.g. spring or clockwork
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A high-pressure injector comprises a needle cylinder, wherein the needle cylinder is provided with a needle head, a piston and a guide rod are arranged in the needle cylinder, the needle cylinder is divided into a first cavity and a second cavity by the piston, the guide rod is positioned in the second cavity, one end of the guide rod is connected with the piston, a guide sleeve is fixedly connected in one end of the needle cylinder, which is far away from the needle head, the guide rod is arranged in the guide sleeve, the guide rod and the guide sleeve are sealed by a plurality of sealing rings, one end of the guide rod, which is far away from the piston, is fixedly connected with a baffle plate, a plastic telescopic pipe is; still include flexible medicine supplementing bag, the medicine supplementing bag passes through hose and second cavity intercommunication, is equipped with a plurality of check valves on the piston, installs first valve on the hose. The invention is used for solving the problem that when the contrast medium in the high-pressure syringe is used up, the contrast medium catheter needs to be taken down and then the suction tube is used for sucking the contrast medium, so that the contrast medium is very inconvenient in the contrast process.
Description
Technical Field
The invention relates to a high-pressure injector.
Background
The contrast agent high-pressure injector is mainly used for contrast agent injection during angiography and also can be used for contrast agent injection during CT (computed tomography) contrast examination. The high pressure syringe functions to ensure a rapid injection of a sufficient amount of high concentration X-ray contrast agent into the examination site within a certain period of time. It is composed of injection syringe, injection head, push and control system, supporting and fixing part and accessories. It can be fixed on walls, ceilings, treatment tables, carts and moving racks. At present, in the process of high-pressure enhanced CT (computed tomography) contrast, a contrast medium is generally sucked into a high-pressure syringe cylinder in a suction pipe mode and then is connected with a contrast conduit, when the contrast medium in the high-pressure syringe cylinder is used up, the contrast conduit needs to be taken down, and the contrast medium is sucked by the suction pipe, so that the process of contrast is very inconvenient.
Disclosure of Invention
The invention aims to provide a high-pressure injector, which is used for solving the problem that when a contrast medium in a high-pressure injector syringe is used up, a contrast catheter needs to be taken down, and then the contrast medium is sucked by a suction pipe, so that the contrast medium is very inconvenient in the contrast process.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a high-pressure injector comprises a needle cylinder, wherein the needle cylinder is provided with a needle head, a piston and a guide rod are arranged in the needle cylinder, the needle cylinder is divided into a first cavity and a second cavity by the piston, the guide rod is positioned in the second cavity, one end of the guide rod is connected with the piston, a guide sleeve is fixedly connected in one end of the needle cylinder, which is far away from the needle head, the guide rod is arranged in the guide sleeve, the guide rod and the guide sleeve are sealed by a plurality of sealing rings, one end of the guide rod, which is far away from the piston, is fixedly connected with a baffle plate, a plastic telescopic pipe is; still include flexible medicine supplementing bag, the medicine supplementing bag passes through hose and second cavity intercommunication, is equipped with a plurality of check valves on the piston, installs first valve on the hose.
The medicine replenishing bag is communicated with a medicine replenishing pipe, and the medicine replenishing pipe is provided with a second valve.
Be equipped with a baffle of fixedly connected with in the cylinder between syringe needle and piston, seted up the through-hole on the baffle, be equipped with a cover plate on the through-hole towards the syringe needle terminal surface, cover plate one end is articulated with the baffle.
The flexible medicine supplementing bag is made of polypropylene materials.
The invention has the beneficial effects that: when the piston pushes the contrast medium in the cavity on one side of the syringe, the piston pumps the standby contrast medium in the medicine replenishing bag into the cavity on the other side of the piston, and when the piston is withdrawn, the syringe is filled with the contrast medium again, so that the contrast medium is continuously replenished, the contrast catheter does not need to be taken down, and the use is safe and convenient.
Drawings
The invention is further described below with reference to the accompanying drawings:
fig. 1 is a schematic cross-sectional structure of the present invention.
Fig. 2 is a partially enlarged schematic view of the present invention.
In the figure: the device comprises a syringe 1, a piston 2, a guide sleeve 4, a guide rod 5, an extension tube 6, a medicine supplementing bag 7, a baffle plate 8, a first cavity 11, a second cavity 12, a needle 13, a one-way valve 21, a baffle plate 51, a first valve 71, a second valve 72, a hose 73, a medicine supplementing tube 74 and a cover plate 81.
Detailed Description
As shown in fig. 1 and 2, a high-pressure injector comprises a needle cylinder 1, wherein the needle cylinder 1 is provided with a needle 13, the needle cylinder 1 is internally provided with a piston 2 and a guide rod 5, the piston 2 divides the needle cylinder 1 into a first cavity 11 and a second cavity 12, the guide rod 5 is positioned in the second cavity 12, one end of the guide rod 5 is connected with the piston 2, one end of the needle cylinder 1, which is far away from the needle 13, is fixedly connected with a guide sleeve 4, the guide rod 5 is arranged in the guide sleeve 4, the guide rod 5 and the guide sleeve 4 are sealed by a plurality of sealing rings, one end of the guide rod 5, which is far away from the piston 2, is fixedly connected with a baffle 51, a plastic extension tube 6 is sleeved outside the guide rod 5; the medicine replenishing bag is characterized by further comprising a flexible medicine replenishing bag 7, the medicine replenishing bag 7 is communicated with the second cavity 12 through a hose 73, a plurality of one-way valves 21 are arranged on the piston 2, and a first valve 71 is arranged on the hose 73.
The using method of the invention comprises the following steps: after the high-pressure injector is installed on the injector, the injector pushes the guide rod 5 to move, the guide rod 5 outputs the contrast medium in the first cavity 11 through the needle 13 by the piston 2, meanwhile, the first valve 71 can be opened, the contrast medium in the medicine replenishing bag 7 enters the second cavity 12 through the hose 73, the plastic extension tube 6 is compressed, after the contrast medium in the first cavity 11 is pushed, the first valve 71 is closed, the guide rod 5 retracts, the contrast medium in the second cavity 12 enters the first cavity 11 through the check valves 21, and the plastic extension tube 6 is lengthened, so that the contrast medium can be injected for the second time, and the contrast medium can be replenished without taking down the syringe 1; on the other hand, when the guide rod 5 is drawn back and forth, the guide rod 5 can be surrounded by the plastic extension tube 6, so that external dust is effectively prevented from being contaminated on the guide rod 5, and the contrast agent is prevented from being contaminated; on the other hand, the flexible medicine replenishing bag 7 can contract along with the replenishing of the contrast medium, so that negative pressure is prevented from being formed, and the contrast medium can be ensured to smoothly enter the second cavity 12.
The medicine replenishing bag 7 is communicated with a medicine replenishing pipe 74, and the second valve 72 is mounted on the medicine replenishing pipe 74. When the contrast agent in the flexible medicine supplement bag 7 is used up, the medicine liquid can be filled into the medicine supplement bag 7 through the medicine supplement pipe 74.
Be equipped with a baffle 8 of fixedly connected with in syringe 1 between syringe needle 13 and piston 2, seted up the through-hole on baffle 8, be equipped with a cover plate 81 on the through-hole towards syringe needle 13 terminal surface, cover plate 81 one end is articulated with baffle 8. When the plunger 2 moves from the first cavity 11 to the first cavity 11, the cover plate 81 closes the through hole of the upper baffle 8 to prevent the contrast medium in the foreline of the connecting needle 13 from being drawn back.
The flexible medicine supplement bag 7 is made of polypropylene materials.
Claims (4)
1. The utility model provides a high-pressure injector, includes cylinder (1), cylinder (1) has syringe needle (13), is equipped with piston (2) and guide arm (5) in cylinder (1), and first cavity (11) and second cavity (12) are separated into with cylinder (1) piston (2), and guide arm (5) are located second cavity (12), and guide arm (5) one end is connected its characterized in that with piston (2): a guide sleeve (4) is fixedly connected in one end, far away from a needle head (13), of the needle cylinder (1), a guide rod (5) is arranged in the guide sleeve (4), the guide rod (5) and the guide sleeve (4) are sealed through a plurality of circles of sealing rings, one end, far away from the piston (2), of the guide rod (5) is fixedly connected with a blocking piece (51), a plastic telescopic pipe (6) is sleeved outside the guide rod (5), and two ends of the telescopic pipe (6) are fixedly connected with the blocking piece (51) and a cylinder opening of the needle cylinder (1) respectively; the medicine replenishing bag is characterized by further comprising a flexible medicine replenishing bag (7), the medicine replenishing bag (7) is communicated with the second cavity (12) through a hose (73), a plurality of one-way valves (21) are arranged on the piston (2), and a first valve (71) is mounted on the hose (73).
2. A high pressure syringe according to claim 1, wherein: the medicine supplementing bag (7) is communicated with a medicine supplementing pipe (74), and the medicine supplementing pipe (74) is provided with a second valve (72).
3. A high pressure syringe according to claim 1, wherein: be equipped with a fixedly connected with baffle (8) in cylinder (1) between syringe needle (13) and piston (2), seted up the through-hole on baffle (8), be equipped with a cover plate (81) on the through-hole towards syringe needle (13) terminal surface, cover plate (81) one end is articulated with baffle (8).
4. A high pressure syringe according to claim 1, wherein: the flexible medicine supplement bag (7) is made of polypropylene materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811495642.8A CN111282082A (en) | 2018-12-07 | 2018-12-07 | High-pressure syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811495642.8A CN111282082A (en) | 2018-12-07 | 2018-12-07 | High-pressure syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111282082A true CN111282082A (en) | 2020-06-16 |
Family
ID=71029153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811495642.8A Pending CN111282082A (en) | 2018-12-07 | 2018-12-07 | High-pressure syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111282082A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112681325A (en) * | 2020-12-17 | 2021-04-20 | 赵琪芸 | Hydraulic engineering fills slip casting machine with crack |
| CN114984335A (en) * | 2022-04-11 | 2022-09-02 | 中国人民解放军空军军医大学 | Double-needle suction injection device for assisting vascular malformation rehabilitation |
-
2018
- 2018-12-07 CN CN201811495642.8A patent/CN111282082A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112681325A (en) * | 2020-12-17 | 2021-04-20 | 赵琪芸 | Hydraulic engineering fills slip casting machine with crack |
| CN112681325B (en) * | 2020-12-17 | 2021-11-12 | 宁夏宏远建设工程有限公司 | Hydraulic engineering fills slip casting machine with crack |
| CN114984335A (en) * | 2022-04-11 | 2022-09-02 | 中国人民解放军空军军医大学 | Double-needle suction injection device for assisting vascular malformation rehabilitation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200616 |
|
| WD01 | Invention patent application deemed withdrawn after publication |