CN219558273U - High-pressure injector connecting device - Google Patents
High-pressure injector connecting device Download PDFInfo
- Publication number
- CN219558273U CN219558273U CN202320120319.2U CN202320120319U CN219558273U CN 219558273 U CN219558273 U CN 219558273U CN 202320120319 U CN202320120319 U CN 202320120319U CN 219558273 U CN219558273 U CN 219558273U
- Authority
- CN
- China
- Prior art keywords
- channel
- pipe
- block
- transparent
- blocking
- 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.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a high-pressure injector connecting device, which comprises an indwelling needle, wherein the indwelling needle comprises a steel needle, a catheter, a transparent three-way pipe, a blocking plug, a needle holding handle, an extension pipe and a connector; the catheter is sleeved outside the steel needle; one end of a straight pipe of the transparent three-way pipe is connected with the end part of the guide pipe, the other end of the straight pipe of the transparent three-way pipe is provided with a blocking plug, and a branch pipe of the transparent three-way pipe is connected with one end of the extension pipe; the needle holding handle is arranged at the side of the blocking plug; one end of the connector is connected with the other end of the extension tube, the other end of the connector is provided with a connector, and a heparin cap is arranged at the connector; the high-pressure injector connecting device further comprises a one-way valve, wherein the one-way valve is arranged between the extension pipe and the branch pipe of the transparent three-way pipe, and the liquid flow direction of the one-way valve is from the extension pipe to the transparent three-way pipe. According to the utility model, the check valve replaces the flow stopping clamp, so that the step of manually clamping or opening the extension tube by medical staff can be omitted, and the liquid backflow can be effectively avoided.
Description
Technical Field
The utility model belongs to the technical field of medical appliances, and particularly relates to a high-pressure injector connecting device.
Background
High pressure contrast injectors are auxiliary equipment in radiodiagnosis systems, often an auxiliary diagnosis equipment used in CT examinations. Particularly, when it is necessary to perform enhanced CT of blood vessels, it is necessary to apply a device such as a high-pressure injector to rapidly and accurately inject a sufficient amount of contrast medium into an examination site, and then diagnose a diseased site to clarify the disease condition and assist in the next treatment scheme.
In general, an indwelling needle is used in combination with a high-pressure syringe, and a puncture needle of the indwelling needle is first inserted into a patient, then a connector of the indwelling needle is connected to the high-pressure syringe, and finally a contrast medium is injected into the indwelling needle by the high-pressure syringe. In life, the connector of some remaining needles is "Y" shape, and it has two connectors, and one connector is provided with the heparin cap, and another connector is provided with the fixed cap, and when using, high-pressure syringe can be connected with the connector that is provided with the heparin cap, because high-pressure syringe's injection velocity is fast, pressure is big, if the fixed cap connection is unstable, probably has the danger that the fixed cap is washed out by high pressure, leads to the injection failure at last. Some indwelling needles only have one connecting port with a heparin cap, and compared with the indwelling needles which have only a single connecting port, the indwelling needles have no worry about the danger that contrast agent rushes out from the other connecting port in the use process, so that the indwelling needles can be applied to actual life.
Whether the Y-shaped indwelling needle or the indwelling needle with a single connecting port is provided with a flow stopping clamp on the extension tube, the flow stopping clamp is used for preventing liquid or blood from flowing back, at present, when the flow stopping clamp is used, the flow stopping clamp is generally required to be manually operated and a pipeline of the extension tube is clamped, and when the extension tube is required to be conducted, the flow stopping clamp is required to be opened, so that the workload of medical staff can be increased to a certain extent. However, in life, the check valve can effectively avoid liquid backflow, so that, in order to solve the problems, the utility model provides a high-pressure syringe connecting device using the check valve to replace a flow stop clamp, which can omit the step of manually clamping or opening an extension tube by medical staff and can effectively avoid liquid backflow.
Disclosure of Invention
The technical problem to be solved by the utility model is to provide the high-pressure injector connecting device, the check valve is used for replacing the flow stop clamp, the step of manually clamping or opening the extension tube by medical staff can be omitted, and the liquid backflow can be effectively avoided.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the high-pressure injector connecting device comprises an indwelling needle, wherein the indwelling needle comprises a steel needle, a catheter, a transparent three-way pipe, a blocking plug, a needle holding handle, an extension pipe and a connector; the catheter is sleeved outside the steel needle; one end of a straight pipe of the transparent three-way pipe is connected with the end part of the guide pipe, the other end of the straight pipe of the transparent three-way pipe is provided with a blocking plug, and a branch pipe of the transparent three-way pipe is connected with one end of the extension pipe; the needle holding handle is arranged at the side of the blocking plug; one end of the connector is connected with the other end of the extension tube, the other end of the connector is provided with a connector, and a heparin cap is arranged at the connector; the distinguishing features are that: the high-pressure injector connecting device further comprises a one-way valve, wherein the one-way valve is arranged between the extension pipe and the branch pipe of the transparent three-way pipe, and the liquid flow direction of the one-way valve is from the extension pipe to the transparent three-way pipe.
Further, the one-way valve comprises a valve body, a blocking block, a spring and a fixing ring; the valve body is of a hollow columnar structure with two ends communicated; the hollow part of the valve body sequentially comprises a first channel, a second channel and a third channel; the first channel and the third channel are respectively connected with the extension pipe and a branch pipe of the transparent three-way pipe; the caliber of the first channel is smaller than that of the second channel and the third channel; the blocking block is arranged in the hollow part of the valve body, the front end of the blocking block is used for blocking in the first channel, and the rear end of the blocking block is positioned in the third channel and can slide in the third channel; the fixed ring is fixed in the third channel; the spring is connected between the fixed ring and the back end surface of the blocking block, and the blocking block can elastically lead the front end of the blocking block to be far away from the first channel and lead the first channel, the second channel and the third channel to be conducted or block the first channel and lead the first channel, the second channel and the third channel to be non-conducted.
Still further, the block includes a first block and a second block; the first blocking block is in a truncated cone shape, the diameter of the top surface of the first blocking block is smaller than the caliber of the first channel, the diameter of the cross section of the middle part of the first blocking block is equal to the caliber of the first channel, and the diameter of the bottom surface of the first blocking block is larger than the caliber of the first channel but smaller than the caliber of the second channel; the second blocking piece is cylindric, and its front end is connected with the bottom surface of first blocking piece, and the rear end is arranged in the third passageway, and the diameter of second blocking piece equals the bottom surface diameter of first blocking piece, is less than the bore of third passageway.
Further, the rear end face of the second blocking piece is provided with a groove recessed towards the front end of the second blocking piece; the upper surface of the part of the second blocking block, which is positioned in the second channel, is provided with a notch which is communicated with the groove; the end part of the spring connected with the blocking block is positioned in the groove and is connected with the bottom wall of the groove.
The beneficial effects of the utility model are as follows:
compared with the existing indwelling needle, the high-pressure syringe connecting device provided by the utility model has the advantages that the step that medical staff manually clamps or opens the extension tube can be omitted by replacing the flow stop clamp with the one-way valve, the working efficiency of the medical staff is improved, and meanwhile, liquid backflow can be effectively avoided; in addition, the connecting device is provided with only one connecting port, so that compared with a Y-shaped connecting port, the risk that the contrast agent is flushed out of the tube can be effectively avoided during use.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the present utility model.
Fig. 2 is a cross-sectional view of a one-way valve according to an embodiment of the present utility model.
Fig. 3 is a cross-sectional view of an embodiment of the present utility model in a one-way valve open state.
Fig. 4 is a schematic structural view of a block of a check valve according to an embodiment of the present utility model.
The reference numerals in the figures are: 1. a steel needle; 2. a conduit; 3. a transparent three-way pipe; 4. a barrier plug; 5. a needle holder; 6. an extension tube; 7. a connector; 71. a heparin cap; 8. a one-way valve; 81. a valve body; 811. a first channel; 812. a second channel; 813. a third channel; 82. blocking; 821. a first block; 822. a second block; 823. a groove; 824. a notch; 83. a spring; 84. a fixing ring; 9. and (5) connecting pipes.
Detailed Description
The present utility model is described below with reference to the accompanying drawings, and the specific embodiments described herein are for illustrating and explaining the present utility model, not for limiting the present utility model, and various modifications and improvements made by those skilled in the art to which the present utility model pertains without departing from the spirit of the design of the present utility model, should fall within the scope of the present utility model.
As shown in fig. 1 to 4, the high pressure syringe connecting device of the present embodiment includes an indwelling needle having the same structure as that of an indwelling needle commonly used in life, and mainly includes a steel needle 1, a catheter 2, a transparent tee 3, a blocking plug 4, a needle holding handle 5, an extension tube 6, and a connector 7. Wherein, the catheter 2 is sleeved outside the steel needle 1. One end of a straight pipe of the transparent three-way pipe 3 is connected with the end part of the guide pipe 2, the other end of the straight pipe of the transparent three-way pipe 3 is provided with a blocking plug 4, and a branch pipe of the transparent three-way pipe 3 is connected with one end of an extension pipe 6. The needle holder 5 is arranged beside the barrier plug 4. One end of the connector 7 is connected with the other end of the extension tube 6, and the other end is provided with a connector, and a heparin cap 71 is arranged at the connector, and the connector is used for connecting a high-pressure injector.
On the basis of the above structure, the high-pressure syringe connecting device of the present embodiment further includes a check valve 8, the check valve 8 is disposed between the extension pipe 6 and the branch pipe of the transparent three-way pipe 3, and the liquid flow direction of the check valve 8 is from the extension pipe 6 to the transparent three-way pipe 3.
Specifically, the check valve 8 includes a valve body 81, a block 82, a spring 83, and a retainer ring 84.
The valve body 81 has a hollow columnar structure with two ends penetrating. The hollow portion of the valve body 81 includes a first passage 811, a second passage 812, and a third passage 813 in this order. Wherein the first channel 811 and the third channel 813 are connected with the extension pipe 6 and the branch pipe of the transparent tee 3, respectively. Specifically, in this embodiment, two ends of the valve body 81 are provided with connection pipes 9 communicating with the hollow portions thereof, and the two connection pipes 9 are connected with the extension pipe 6 and the branch pipe of the transparent tee 3, respectively. The caliber of the first channel 811 is smaller than the caliber of the second channel 812 and the third channel 813, and the caliber of the third channel 813 is smaller than the caliber of the second channel 812, where the caliber refers to the channel diameter of the first channel 811, the second channel 812 or the third channel 813.
A block 82 is provided in the hollow portion of the valve body 81, the front end of which is for blocking in the first passage 811, and the rear end of which is located in the third passage 813 and is slidable in the third passage 813. The block 82 includes a first block 821 and a second block 822. The first block 821 has a truncated cone shape, and has a top surface having a diameter smaller than the diameter of the first passage 811, a middle section having a diameter equal to the diameter of the first passage 811, and a bottom surface having a diameter larger than the diameter of the first passage 811 but smaller than the diameter of the second passage 812. The second block 822 has a cylindrical shape, the front end of which is connected to the bottom surface of the first block 821, and the rear end of which is located in the third channel 813, and the diameter of the second block 822 is equal to the diameter of the bottom surface of the first block 821 and smaller than the caliber of the third channel 813. Specifically, in the present embodiment, the rear end surface of the second block 822 is provided with a groove 823 recessed toward the front end thereof. The upper surface of the portion of the second block 822 located in the second channel 812 is provided with a notch 824, and the notch 824 communicates with the recess 823, at this time, the diameter of the second block 822 may be equal to or slightly smaller than the caliber of the third channel 813.
The fixing ring 84 is fixed in the third passage 813, and the outer ring diameter of the fixing ring 84 is equal to the caliber of the third passage 813, and the inner ring diameter thereof is smaller than the diameter of the spring 83, but the diameter of the inner ring cannot be excessively small.
The spring 83 is connected between the fixing ring 84 and the rear end face of the block 82, and in this embodiment, one end of the spring 83 is located in the recess 823 and is connected to the bottom wall of the recess 823, and the other end of the spring 83 is connected to the fixing ring 84. The block 82 may elastically move its front end away from the first channel 811 and make the first, second and third channels 811, 812 and 813 conductive, or block the first channel 811 and make the first, second and third channels 811, 812 and 813 nonconductive.
The principle of use of the one-way valve 8 of the present utility model is: as shown in fig. 2, in the initial state, under the action of the elastic force of the spring 83, the front end of the first block 821 of the block 82 is placed in the first channel 811, and since the cross-sectional diameter of the middle part of the first block 821 is equal to the caliber of the first channel 811, the middle part of the first block 821 will block the first channel 811, and at this time, the first channel 811, the second channel 812 and the third channel 813 are not conductive, and the liquid cannot flow from the transparent tee 3 to the extension tube 6, thereby playing a role in preventing the liquid from flowing backward; when contrast medium is injected into the extension tube 6, under the high pressure impact of the high pressure injector, the block 82 will move towards one end of the fixed ring 84, at which time the first block 821 of the block 82 leaves the first channel 811 and the spring 83 compresses, contrast medium enters the second channel 812 from the first channel 811 and enters the recess 823 from the notch 824 of the second block 822, enters the third channel 813 from the recess 823 and finally enters the transparent tee 3, the flow direction of which can be seen by the arrow in fig. 3. After the transfusion is finished, the spring 83 releases the elastic force, the blocking block 82 returns to the original position, and the first channel 811 is continuously blocked.
In summary, in the high-pressure syringe connecting device of the embodiment, compared with the existing indwelling needle, the check valve 8 replaces the flow stopping clip, so that the step that medical staff manually clips or opens the extension tube 6 can be omitted, the working efficiency of the medical staff is improved, and meanwhile liquid backflow can be effectively avoided; in addition, the connecting device is provided with only one connecting port, so that compared with a Y-shaped connecting port, the risk that the contrast agent is flushed out of the tube can be effectively avoided during use.
Claims (5)
1. The high-pressure injector connecting device comprises an indwelling needle, wherein the indwelling needle comprises a steel needle (1), a catheter (2), a transparent three-way pipe (3), a blocking plug (4), a needle holding handle (5), an extension pipe (6) and a connector (7); the guide pipe (2) is sleeved outside the steel needle (1); one end of a straight pipe of the transparent three-way pipe (3) is connected with the end part of the guide pipe (2), the other end of the straight pipe of the transparent three-way pipe (3) is provided with a blocking plug (4), and a branch pipe of the transparent three-way pipe (3) is connected with one end of the extension pipe (6); the needle holding handle (5) is arranged at the side of the blocking plug (4); one end of the connector (7) is connected with the other end of the extension tube (6), the other end is provided with a connector, and a heparin cap (71) is arranged at the connector;
the method is characterized in that: the three-way valve is characterized by further comprising a one-way valve (8), wherein the one-way valve (8) is arranged between the extension pipe (6) and the branch pipe of the transparent three-way pipe (3), and the liquid flow direction of the one-way valve (8) is from the extension pipe (6) to the transparent three-way pipe (3).
2. The high pressure syringe connection of claim 1, wherein: the one-way valve (8) comprises a valve body (81), a blocking block (82), a spring (83) and a fixed ring (84);
the valve body (81) is of a hollow columnar structure with two ends communicated; the hollow part of the valve body (81) comprises a first channel (811), a second channel (812) and a third channel (813) in sequence; wherein the first channel (811) and the third channel (813) are respectively connected with the extension pipe (6) and the branch pipe of the transparent three-way pipe (3); the caliber of the first channel (811) is smaller than the caliber of the second channel (812) and the third channel (813);
the blocking block (82) is arranged in the hollow part of the valve body (81), the front end of the blocking block is used for blocking in the first channel (811), and the rear end of the blocking block is positioned in the third channel (813) and can slide in the third channel (813);
a fixing ring (84) is fixed in the third channel (813);
the spring (83) is connected between the fixing ring (84) and the rear end face of the blocking block (82), and the blocking block (82) can elastically enable the front end of the blocking block to be far away from the first channel (811) and enable the first channel (811), the second channel (812) and the third channel (813) to be conducted, or block the first channel (811) and enable the first channel (811), the second channel (812) and the third channel (813) to be non-conducted.
3. The high pressure syringe connection of claim 2, wherein: the block (82) comprises a first block (821) and a second block (822); the first blocking block (821) is in a truncated cone shape, the diameter of the top surface of the first blocking block is smaller than the caliber of the first channel (811), the diameter of the cross section of the middle part of the first blocking block is equal to the caliber of the first channel (811), and the diameter of the bottom surface of the first blocking block is larger than the caliber of the first channel (811) but smaller than the caliber of the second channel (812); the second block (822) is cylindrical, the front end of the second block is connected with the bottom surface of the first block (821), the rear end of the second block is positioned in the third channel (813), the diameter of the second block (822) is equal to the diameter of the bottom surface of the first block (821), and the diameter of the second block is smaller than the caliber of the third channel (813).
4. A high pressure syringe connection as claimed in claim 3, wherein: the rear end face of the second blocking block (822) is provided with a groove (823) recessed towards the front end of the second blocking block; the upper surface of the part of the second blocking block (822) positioned in the second channel (812) is provided with a gap (824), and the gap (824) is communicated with the groove (823); the end of the spring (83) connected with the blocking block (82) is positioned in the groove (823) and is connected with the bottom wall of the groove (823).
5. The high pressure syringe connection of claim 2, wherein: two ends of the valve body (81) are provided with connecting pipes (9) communicated with the hollow parts of the valve body, and the two connecting pipes (9) are respectively connected with the extension pipe (6) and the branch pipe of the transparent three-way pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320120319.2U CN219558273U (en) | 2023-01-30 | 2023-01-30 | High-pressure injector connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320120319.2U CN219558273U (en) | 2023-01-30 | 2023-01-30 | High-pressure injector connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219558273U true CN219558273U (en) | 2023-08-22 |
Family
ID=87656882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320120319.2U Active CN219558273U (en) | 2023-01-30 | 2023-01-30 | High-pressure injector connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219558273U (en) |
-
2023
- 2023-01-30 CN CN202320120319.2U patent/CN219558273U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6689109B2 (en) | Positive flow generator for indwelling medical fluid systems | |
| CN114699599B (en) | Indwelling needle with slow-release positive pressure device | |
| JPH07303697A (en) | Port cannula device | |
| CN108578826B (en) | Venous indwelling needle capable of preventing blood return | |
| CN105056341A (en) | Remaining needle capable of providing positive pressure continuously and application method thereof | |
| CN219558273U (en) | High-pressure injector connecting device | |
| US20180056034A1 (en) | Central venous catheter access aspiration system | |
| CN210078313U (en) | Aseptic medicine dissolving syringe capable of reducing particle pollution | |
| KR200493225Y1 (en) | Syringe | |
| CN204840496U (en) | Keep somewhere needle with malleation device | |
| CN215504783U (en) | Contrast agent injection pipeline | |
| CN210583275U (en) | Indwelling needle assembly | |
| CN209771004U (en) | Anti-mixing medicine injection channel | |
| CN209916912U (en) | Blood return prevention venous indwelling needle | |
| CN201492762U (en) | Syringe capable of guiding guide wires therein | |
| CN213191769U (en) | Anti-coagulation positive pressure indwelling needle | |
| CN219595457U (en) | Remaining needle convenient for blood drawing | |
| CN204766834U (en) | A keep somewhere needle for taking extrusion impulse type malleation device | |
| CN214805216U (en) | Novel intrahepatic and extrahepatic portal angiography pipeline | |
| CN210331267U (en) | Multifunctional joint for venous transfusion | |
| CN219022682U (en) | High pressure resistant remaining needle | |
| CN217793970U (en) | Novel indwelling needle capable of preventing blood return | |
| CN215938594U (en) | Thrombus-prevention positive-pressure indwelling needle | |
| CN219090433U (en) | Drainage device with flushing function | |
| CN213852747U (en) | Single Y valve and three-way integrated device for interventional therapy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |