CN210750289U - Injector for infusion medicine adding - Google Patents
Injector for infusion medicine adding Download PDFInfo
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- CN210750289U CN210750289U CN201920995219.8U CN201920995219U CN210750289U CN 210750289 U CN210750289 U CN 210750289U CN 201920995219 U CN201920995219 U CN 201920995219U CN 210750289 U CN210750289 U CN 210750289U
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- infusion
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Abstract
The utility model relates to an injector for infusion adds medicine contains: a dosing needle connected with the infusion bottle; a medicine suction needle connected with the ampoule bottle; the injector structure is used for forming negative pressure in the infusion bottle by sucking gas in the infusion bottle; and a double lumen soft catheter; the drug adding needle comprises a double-cavity needle stem and a needle head arranged at the end part of the double-cavity needle stem, the double-cavity needle stem comprises a first tube cavity and a second tube cavity, and the two tube cavities are both communicated with the inner cavity of the infusion bottle; the double-cavity soft catheter comprises a third lumen for connecting the dosing needle and the first lumen and dosing the infusion bottle and a fourth lumen for connecting the syringe structure and the second lumen and sucking air from the infusion bottle to form negative pressure. The utility model discloses simple structure, novel in design is reasonable, through the principle of syringe push-and-pull piston rod at the infusion bottle internal formation negative pressure, carries the liquid medicine in the ampoule to the infusion bottle in, and easy operation, convenience, swift avoid puncturing the situation of infusion bottle plug etc. repeatedly, have very strong prospect of using.
Description
Technical Field
The utility model relates to the field of infusion auxiliary equipment, in particular to an injector for adding medicine in infusion.
Background
A syringe is a common medical device that can be used for injection through rubber septa in medical devices, containers, and scientific instruments such as those used in chromatography. The existing medicine adding method for infusion is to suck the medicine in an ampoule bottle into an injector and inject the medicine into an infusion bottle through the injector, and the method has the defects of multiple operation steps, complex process, easy pollution, time and labor waste and the like, and particularly increases the chance of medicine pollution due to the multiple operation steps.
Disclosure of Invention
Therefore, the utility model provides an injector for medicine is added in infusion, simple structure, novel in design is reasonable, forms the principle of negative pressure through injector push-and-pull piston rod in the infusion bottle, carries the liquid medicine in the ampoule to the infusion bottle in, easy operation, convenience, swift.
According to the utility model provides a design, an injector for infusion adds medicine contains:
a dosing needle connected with the infusion bottle;
a medicine suction needle connected with the ampoule bottle;
the injector structure is used for forming negative pressure in the infusion bottle by sucking gas in the infusion bottle;
and a double lumen soft catheter;
the drug adding needle comprises a double-cavity needle stem and a needle head arranged at the end part of the double-cavity needle stem, the double-cavity needle stem comprises a first tube cavity and a second tube cavity, and the two tube cavities are both communicated with the inner cavity of the infusion bottle; the double-cavity soft catheter comprises a third lumen for connecting the dosing needle and the first lumen and dosing the infusion bottle and a fourth lumen for connecting the syringe structure and the second lumen and sucking air from the infusion bottle to form negative pressure.
The needle tube arm of the first tube cavity is provided with a liquid inlet hole, and the needle tube arm of the second tube cavity is provided with a gas suction hole; the height of the air suction hole in the infusion bottle is larger than the liquid level line of the infusion bottle.
Preferably, a floating valve used for opening and closing the second pipe cavity pipeline through the buoyancy of the liquid of the infusion bottle is arranged in the second pipe cavity.
Furthermore, a needle tube arm positioned at the upper part of the air suction hole in the second tube cavity is provided with a limiting protrusion for limiting the floating position of the floating valve.
In the above, the syringe structure comprises: one end of the hollow shell is open, and the other end of the hollow shell is closed; the push-pull piston rod is arranged in the inner cavity of the hollow shell and extends to the outside of the shell through the open end of the shell; the fourth pipe cavity is connected with the inner cavity of the hollow shell in a sealing way through the sealing end.
Preferably, the medicine suction needle connected with the third lumen and the hollow shell are of an integral structure.
Preferably, the end part of the medicine suction needle is of a flat head structure.
Further, a needle seat is arranged at the closed end of the hollow shell, and a needle handle is arranged at the other end of the double-cavity needle stalk; the needle handle is provided with a fastener which is used for being clamped and fixed with the needle base.
Preferably, the hollow shell is made of plastic or glass.
Preferably, the outside of the hollow shell is provided with scale marks.
The utility model has the advantages that:
the utility model discloses simple structure, the modern design, rationally, according to the principle of negative pressure, only need to inhale during the medicine needle inserts the ampoule, gaseous suction in with the infusion bottle through syringe pulling piston rod, form the negative pressure in the infusion bottle, the medicine in the ampoule can directly be carried to the infusion bottle through the negative pressure in, more traditional syringe absorbs the liquid medicine and injects the liquid medicine of absorption into the structure of infusion bottle again, and is simple, convenient, through the utility model discloses the syringe structure adds the medicine, adds the medicine at every turn and has reduced at least one step, and especially more suitable to a large amount of medicine work, reduced the pollution that punctures the infusion bottle plug and cause repeatedly and the bottle plug particle fall into the bad situation in the infusion bottle, had the prospect of very strong application.
Description of the drawings:
FIG. 1 is a schematic diagram of the structure of an injector in the embodiment;
fig. 2 is a schematic structural diagram of the injector shell in the embodiment.
The specific implementation mode is as follows:
in the figure, the reference numeral 1 denotes a syringe, the reference numeral 2 denotes a medicine suction needle, the reference numeral 3 denotes a communicating tube, the reference numeral 4 denotes a medicine adding needle handle, the reference numeral 5 denotes a medicine adding needle, the reference numeral 6 denotes an air suction hole, the reference numeral 7 denotes a medicine inlet hole, the reference numeral 8 denotes a float valve, the reference numeral 9 denotes an infusion bottle, and the reference numeral 10 denotes an ampoule bottle; reference numeral 11 denotes a syringe housing, reference numeral 12 denotes a push-pull piston rod, reference numeral 13 denotes a housing inner cavity, and reference numeral 14 denotes a needle hub.
The present invention will be described in further detail with reference to the accompanying drawings and technical solutions, and embodiments of the present invention will be described in detail by way of preferred examples, but the embodiments of the present invention are not limited thereto.
Absorb the liquid medicine to current traditional syringe and pour into the structure of infusion bottle with the liquid medicine of absorption again, the utility model discloses, it is shown with 2 to see fig. 1, provide a syringe for infusing with medicine, contain: a dosing needle connected with the infusion bottle; a medicine suction needle connected with the ampoule bottle; the injector structure is used for forming negative pressure in the infusion bottle by sucking gas in the infusion bottle; and a double lumen soft catheter; the drug adding needle comprises a double-cavity needle stem and a needle head arranged at the end part of the double-cavity needle stem, the double-cavity needle stem comprises a first tube cavity and a second tube cavity, and the two tube cavities are both communicated with the inner cavity of the infusion bottle; the double-cavity soft catheter comprises a third lumen for connecting the dosing needle and the first lumen and dosing the infusion bottle and a fourth lumen for connecting the syringe structure and the second lumen and sucking air from the infusion bottle to form negative pressure.
According to the principle of negative pressure, only need to inhale during the medicine needle inserts the ampoule, gaseous suction in with the infusion bottle through syringe pulling piston rod, form the negative pressure in the infusion bottle, medicine in the ampoule can directly be carried to the infusion bottle through the negative pressure in, more traditional syringe absorbs the liquid medicine and pours into the structure of infusion bottle into with the liquid medicine that absorbs into again, and is simple, convenient, through the utility model discloses the syringe structure adds the medicine, adds the medicine at every turn and has reduced at least one step, and is especially more suitable to a large amount of medicine works, has reduced the pollution and the bottle plug bad situation in the infusion bottle that puncture infusion bottle plug caused repeatedly and the particle falls into, easy operation, convenience, swift, raises the efficiency and security.
Furthermore, in the embodiment of the present invention, the needle tube arm of the first lumen is provided with a liquid inlet hole, and the needle tube arm of the second lumen is provided with a gas inlet hole; the height of the air suction hole in the infusion bottle is larger than the liquid level line of the infusion bottle. Pulling a push-pull piston rod of the injector structure, and allowing gas in the infusion bottle to enter the inner cavity of the hollow shell of the injector structure through the air suction hole, the second tube cavity and the fourth tube cavity in sequence to form negative pressure in the infusion bottle; the liquid medicine in the ampoule bottle passes through the medicine suction needle, the third lumen, the first lumen and the liquid inlet hole in sequence through the negative pressure effect and flows into the liquid in the infusion bottle, so that the infusion medicine adding step is simplified, and the operation is more convenient.
Furthermore, the embodiment of the present invention provides a floating valve for opening and closing the second lumen pipeline through the buoyancy of the liquid in the infusion bottle is disposed in the second lumen, which can prevent the liquid in the infusion bottle from flowing into the inner cavity of the hollow shell.
Further, the embodiment of the utility model provides an in, be provided with on the syringe arm that is located suction hole upper portion in the second lumen and be used for carrying out spacing protruding to float valve come-up position, restrict float valve come-up position, the result of use is better.
Further, in the embodiment of the present invention, the injector structure can be designed to include: one end of the hollow shell is open, and the other end of the hollow shell is closed; the push-pull piston rod is arranged in the inner cavity of the hollow shell and extends to the outside of the shell through the open end of the shell; the fourth pipe cavity is connected with the inner cavity of the hollow shell in a sealing way through the sealing end. Inhale the medicine needle and only be connected with the third lumen, cavity casing inner chamber is used for holding the infusion bottle in gaseous, and the cavity casing is only connected with the fourth lumen promptly, and the present syringe difference of installing the syringe needle of here is, through utilizing current syringe structure and foundation the utility model discloses the function usage carries out institutional advancement to the realization reaches the automatic infusion bottle mesh that flows in of liquid medicine through infusion bottle negative pressure formation, realizes the function that automatic infusion adds the medicine promptly.
Further, the embodiment of the present invention provides an in, inhale medicine needle and cavity casing structure as an organic whole that are connected with the third lumen, both accessible processing methods such as moulding plastics shaping as an organic whole, nevertheless inhale medicine needle and cavity casing inner chamber not communicate.
Furthermore, in the embodiment of the present invention, the end of the medicine suction needle is a flat head structure, which is convenient for sucking the medicine liquid in the ampoule bottle.
Furthermore, in the embodiment of the utility model, a needle seat is arranged on the closed end of the hollow shell, and a needle handle is arranged at the other end of the double-cavity needle stalk; the needle handle is provided with a fastener which is used for being clamped and fixed with the needle base. The buckle piece can be a buckle groove bulge or a buckle ring structure and the like, can realize the detachable and fixed structure of the clamp, can fix the needle handle buckle on the needle base after infusion dosing is completed, and is convenient for centralized management. In the embodiment, a lateral protrusion is arranged on the side wall of the needle handle, and a preformed hole matched with the lateral protrusion for buckling is arranged on the needle base; after one or more groups of medicines are added, the needle handle of the medicine adding needle can be inserted into a preformed hole of the base at the joint of the medicine suction needle and the syringe shell through a lateral protrusion, and the medicine adding needle and the medicine suction needle are sleeved into an ampoule bottle side by side or placed under a sterile towel for storage according to the aseptic operation principle.
Furthermore, in the embodiment of the present invention, the hollow shell is made of plastic or glass. The syringe housing may be made of plastic or glass and is typically provided with a graduated indicator of the volume of the chamber in the syringe. Glass syringe housings can be sterilized with an autoclave, but plastic syringes are often disposable due to their low cost of disposal, and are therefore often made of plastic to further reduce the risk of blood-borne diseases.
The shell can be a disposable syringe needle cylinder, and is designed into different specifications of 50ml, 20ml, 10ml and the like according to daily use requirements, and the material is the same as or simpler than that of the existing disposable syringe. The medicine suction needle has a needle tip part which can be designed into a flat head structure according to actual use requirements, so that medicine liquid in the ampoule bottle can be conveniently and fully sucked, the medicine suction needle is made of metal or high polymer materials which are harmless to a human body, and the specification of the medicine suction needle is the same as that of the existing medicine adding needle. The communicating pipe is a double-cavity soft catheter, a harmless high polymer material is used, the specification is according to the inner diameter of the existing transfusion scalp needle hose, and the length can be designed to be 25-30 cm. The medicine adding needle handle is convenient for being fixed with the medicine suction needle base in parallel after medicine adding is finished, the needle head cover can be sleeved for standby, and the tidiness of pipelines in infusion is kept. The medicine adding needle is of a double-cavity structure, a liquid inlet hole and an air suction hole are correspondingly arranged on each cavity of a pipeline to finish negative pressure formation and liquid medicine conveying in an infusion bottle, as shown in figure 1, the air suction hole can be arranged at the upper part of the medicine adding needle, a floating valve in figure 1 is of an automatic slide valve structure, and can be made of harmless floatable materials; referring to fig. 1 and 2, the drug suction needle is fixed with the syringe housing only through the needle holder and is not communicated with the inner cavity of the syringe housing, and the drug suction needle is communicated with the drug adding needle only through the communicating pipe, so that the problems of reflux of the liquid medicine in the ampoule bottle and the like caused by the fact that the syringe pushes and pulls the piston rod to extract are avoided. Or according to the actual use requirement, the structure of the injector can be changed into a manual control micro electric negative pressure aspirator, the use is more convenient and quicker for a liquid preparation center or a large amount of medicine adding work, and the device plays an extremely important role in natural disasters or battlefield rescue.
The working principle is as follows: the infusion medicine adding injector is opened, the medicine adding needle is inserted into the infusion bottle through the conventional disinfection infusion bottle plug, the medicine sucking needle is inserted into the ampoule bottle through the conventional method, negative pressure is formed in the infusion bottle through the pumping action of the push-pull piston rod, and the liquid medicine in the ampoule bottle automatically flows into the infusion bottle along the guide pipe. In the specific operation process, when an operator inserts the medicine adding needle into an infusion bottle, the medicine suction hole is kept at the top in the infusion bottle, so that negative pressure in the infusion bottle is formed conveniently. Convenient operation, quickness, high efficiency, time and labor saving, manpower saving, drug pollution avoidance and the like, and has better application prospect.
It is to be understood that the foregoing description of specific exemplary embodiments of the invention has been presented for the purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. An injector for infusion dosing, comprising:
a dosing needle connected with the infusion bottle;
a medicine suction needle connected with the ampoule bottle;
the injector structure is used for forming negative pressure in the infusion bottle by sucking gas in the infusion bottle;
and a double lumen soft catheter;
the drug adding needle comprises a double-cavity needle stem and a needle head arranged at the end part of the double-cavity needle stem, the double-cavity needle stem comprises a first tube cavity and a second tube cavity, and the two tube cavities are both communicated with the inner cavity of the infusion bottle; the double-cavity soft catheter comprises a third lumen for connecting the dosing needle and the first lumen and dosing the infusion bottle and a fourth lumen for connecting the syringe structure and the second lumen and sucking air from the infusion bottle to form negative pressure.
2. The syringe for adding medicine to infusion according to claim 1, wherein the needle tube arm of the first lumen is provided with a liquid inlet hole, and the needle tube arm of the second lumen is provided with a suction hole; the height of the air suction hole in the infusion bottle is larger than the liquid level line of the infusion bottle.
3. The injector for adding medicine to infusion according to claim 2, characterized in that a float valve for opening and closing the second lumen pipeline by buoyancy of the liquid of the infusion bottle is arranged in the second lumen.
4. The syringe for adding medicine into infusion according to claim 3, wherein a needle tube arm positioned at the upper part of the air suction hole in the second tube cavity is provided with a limiting protrusion for limiting the floating position of the float valve.
5. The syringe for infusion dosing of claim 1, wherein the syringe structure comprises:
one end of the hollow shell is open, and the other end of the hollow shell is closed;
the push-pull piston rod is arranged in the inner cavity of the hollow shell and extends to the outside of the shell through the open end of the shell;
the fourth pipe cavity is connected with the inner cavity of the hollow shell in a sealing way through the sealing end.
6. The syringe for adding medicine to infusion according to claim 5, wherein the medicine suction needle connected with the third lumen is integrated with the hollow housing.
7. The syringe for adding medicine to infusion according to any one of claims 1 to 6, wherein the end of the medicine suction needle is of a flat head structure.
8. The syringe for adding medicine to infusion according to claim 6, wherein the closed end of the hollow shell is provided with a needle seat, and the other end of the double-cavity needle stem is provided with a needle handle; the needle handle is provided with a fastener which is used for being clamped and fixed with the needle base.
9. The syringe for adding medicine to infusion solution according to claim 5, wherein the hollow shell is made of plastic or glass.
10. The syringe for adding medicine to infusion according to claim 5, wherein the hollow housing is provided with scale marks on the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920995219.8U CN210750289U (en) | 2019-06-28 | 2019-06-28 | Injector for infusion medicine adding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920995219.8U CN210750289U (en) | 2019-06-28 | 2019-06-28 | Injector for infusion medicine adding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210750289U true CN210750289U (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920995219.8U Active CN210750289U (en) | 2019-06-28 | 2019-06-28 | Injector for infusion medicine adding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210750289U (en) |
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2019
- 2019-06-28 CN CN201920995219.8U patent/CN210750289U/en active Active
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