CN216366179U - Sensitive vacuum transfusion blood return vein needle - Google Patents
Sensitive vacuum transfusion blood return vein needle Download PDFInfo
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- CN216366179U CN216366179U CN202121722136.5U CN202121722136U CN216366179U CN 216366179 U CN216366179 U CN 216366179U CN 202121722136 U CN202121722136 U CN 202121722136U CN 216366179 U CN216366179 U CN 216366179U
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Abstract
The utility model relates to a sensitive vacuum transfusion blood returning vein needle, which comprises a sheet-shaped sensitive blood returning device, a connecting hose and a vein needle, the sheet-shaped sensitive blood returning device consists of a hemispherical membrane, a hemispherical membrane seat, a liquid through pipe, a liquid inlet and a liquid outlet, the bottom in the hemispherical membrane seat is a semi-arc spherical surface, the liquid through pipe is arranged below the bottom part of the hemispherical membrane seat, the upper part of the middle of the liquid through pipe is intersected with the semi-arc spherical surface at the bottom part of the hemispherical membrane seat, by adopting the technical scheme, the bottom surface of the hemispherical membrane is respectively contacted with the infusion liquid and the arc bottom surface in the sheet-shaped sensitive blood returning device, the air retention space is effectively eliminated, the induction surface is enlarged, thereby stopped the air and mixed the potential safety hazard in the blood vessel, shortened the blood vessel and returned the blood and the response time that the semilemma upwards heaved after the vein needle correctly pricks the blood vessel, the sensitive ware of returning blood of slice is connected with the vein needle through coupling hose to make things convenient for medical personnel to operate the vein needle safely and prick in patient's blood vessel.
Description
Technical Field
The utility model relates to a medical instrument, in particular to a sensitive vacuum infusion blood return venous needle.
Background
Among the prior art, need the patient of drugs such as intravenous injection antibiotic to carry out the treatment of infusing, be provided with sensitive blood returning device on the vein needle in order to prevent working error, when the vein needle correctly pricks the blood vessel, because intravascular pressure is greater than external pressure, force the capsule of sensitive blood returning device upwards to shrink, blood can appear a small amount of blood returning phenomenon simultaneously in the blood vessel, and the capsule of sensitive blood returning device can not upwards shrink when the vein needle does not accurately prick the blood vessel, needs to prick again.
At present, the inner side of a capsule in a sensitive blood returning device applied to the market is communicated with the atmosphere, and the surface of the capsule is far away from the liquid level of infusion liquid entering the sensitive blood returning device, so that air is filled between the capsule and the liquid level of infusion liquid, when a vein needle is correctly inserted into a blood vessel, the pressure in the blood vessel pushes the capsule to shrink through blood, the infusion liquid and the air, so that the blood returning sensitivity is low, the delay time is long, and most importantly, the sensitive blood returning device is filled with the air, so that the air is easily mixed into the blood vessel to cause potential safety hazards.
SUMMERY OF THE UTILITY MODEL
In view of the above, the technical problem to be solved by the present invention is to provide a sensitive vacuum infusion blood returning venous needle, through the technical scheme, a sheet-shaped sensitive blood returning device is adopted, and a capsule is changed into a hemispherical membrane mode, so that the bottom surface of the hemispherical membrane is respectively contacted with infusion liquid and the arc bottom surface inside the sheet-shaped sensitive blood returning device, the air retention space is effectively eliminated, and the sensing surface is increased, thereby the potential safety hazard that air is mixed into a blood vessel is eliminated, the reaction time of blood returning of the blood vessel and upward bulging of the semimembrane after the venous needle is correctly inserted into the blood vessel is shortened, and the sheet-shaped sensitive blood returning device is connected with the venous needle through a connecting hose, so that the venous needle can be safely operated by medical personnel to be inserted into the blood vessel of a patient.
In order to solve the technical problem, the technical scheme of the utility model is realized as follows: a sensitive vacuum transfusion blood returning vein needle comprises a sheet sensitive blood returning device, a connecting hose and a vein needle, wherein a liquid outlet of the sheet sensitive blood returning device is connected with the vein needle through the connecting hose, the sheet sensitive blood returning device is composed of a hemispherical membrane, a hemispherical membrane seat, a liquid through pipe, a liquid inlet and a liquid outlet, the hemispherical membrane seat is in a bowl shape, the bottom in the hemispherical membrane seat is a semi-arc spherical surface, the liquid through pipe is arranged below the bottom in the hemispherical membrane seat, the middle upper part of the liquid through pipe is intersected with the semi-arc spherical surface at the bottom in the hemispherical membrane seat, an oval liquid penetrating port is formed in the semi-arc spherical surface at the bottom in the hemispherical membrane seat, the liquid inlet and the liquid outlet are respectively arranged at two ends of the liquid through pipe, the convex surface of the hemispherical membrane is downwards arranged in the hemispherical membrane seat, the outer edge of the hemispherical membrane is fixed on the upper opening of the hemispherical membrane seat, and the downward convex hemispherical surface of the hemispherical membrane is matched with the semi-arc spherical surface at the bottom in the hemispherical membrane seat, the convex hemisphere face of the hemisphere film is pressed on the half-arc sphere face and the liquid permeating opening at the bottom in the hemisphere film seat.
As a further technical scheme, the device also comprises a hemispherical membrane fixing ring, wherein the hemispherical membrane fixing ring is buckled on the outer edge of the hemispherical membrane and is fixed on the upper opening of the hemispherical membrane seat together with the hemispherical membrane in a sealing manner.
As a further technical scheme, the lowest end position of the center of the hemisphere surface of the hemisphere membrane is higher than the horizontal center line of the liquid through pipe.
As a further technical scheme, the intravenous injection needle further comprises a needle head protective cover, and the needle head protective cover is sleeved on the intravenous needle.
The beneficial effect after adopting above-mentioned technical scheme is: the utility model provides a sensitive vacuum infusion blood return vein needle, through this technical scheme, make hemisphere diaphragm bottom surface contact with infusion liquid and the inside circular arc bottom surface of the sensitive blood ware of returning of slice respectively, the effectual air persistence space that has eliminated, the response face has been increased, thereby the air has been stopped and has been sneaked into vascular potential safety hazard, the response time of blood return of blood vessel and the upwards bulging of semilamella after having shortened the vein needle and correctly pricking the blood vessel, the sensitive blood ware of returning of slice passes through coupling hose and links to each other with the vein needle, in order to make things convenient for medical personnel's safe handling vein needle to prick into patient's blood vessel.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic diagram of the structure of the sheet-like sensitive blood-returning device of the present invention.
Fig. 3 is a side cross-sectional schematic view of fig. 2.
Fig. 4 is a cross-sectional, bottom view of fig. 2.
Fig. 5 is a schematic structural view of the intravenous needle of the present invention.
In the figure, 1 sheet-shaped sensitive blood returning device, 2 connecting hoses, 3 vein needles, 4 hemisphere membranes, 5 hemisphere membrane seats, 6 liquid through tubes, 7 liquid inlets, 8 liquid outlets, 9 liquid through ports, 10 hemisphere membrane fixing rings and 11 needle head protective covers.
Detailed Description
The technical solution and the specific embodiment of the present invention are further described with reference to the accompanying drawings.
The utility model relates to a sensitive vacuum transfusion blood returning vein needle, which comprises a sheet-shaped sensitive blood returning device 1, a connecting hose 2 and a vein needle 3, wherein a liquid outlet 8 of the sheet-shaped sensitive blood returning device 1 is connected with the vein needle 3 through the connecting hose 2, the sheet-shaped sensitive blood returning device 1 is composed of a hemispherical membrane 4, a hemispherical membrane seat 5, a liquid through pipe 6, a liquid inlet 7 and a liquid outlet 8, the hemispherical membrane seat 5 is bowl-shaped, the bottom in the hemispherical membrane seat 5 is a semi-arc spherical surface, the liquid through pipe 6 is arranged below the bottom in the hemispherical membrane seat 5, the upper part in the middle of the liquid through pipe 6 is intersected with the semi-arc spherical surface at the bottom in the hemispherical membrane seat 5, so that an oval liquid penetrating port 9 is formed on the semi-arc spherical surface at the bottom in the hemispherical membrane seat 5, the liquid inlet 7 and the liquid outlet 8 are respectively arranged at two ends of the liquid through pipe 6, the convex surface of the hemispherical membrane 4 is downwards arranged in the hemispherical membrane seat 5, the outer edge of the hemispherical membrane 4 is fixed on the upper opening of the hemispherical membrane seat 5, the downward convex hemisphere surface of the hemisphere film 4 is matched with the shape of the hemisphere spherical surface at the bottom in the hemisphere film seat 5, and the downward convex hemisphere surface of the hemisphere film 4 is pressed against the hemisphere spherical surface at the bottom in the hemisphere film seat 5 and the liquid permeation opening 9.
As a further embodiment, the semi-spherical membrane fixing ring 10 is further included, and the semi-spherical membrane fixing ring 10 is buckled on the outer edge of the semi-spherical membrane 4 and is sealed and fixed on the upper opening of the semi-spherical membrane seat 5 together with the semi-spherical membrane 4.
As a further example, the lowest position of the hemisphere surface center of the hemisphere membrane 4 is higher than the horizontal center line of the liquid through pipe 6.
As a further embodiment, a needle shield 11 is further included, the needle shield 11 being fitted over the intravenous needle 3.
In the utility model, in order to facilitate the transfusion work, the intravenous needle 3 is connected with the sheet-shaped sensitive blood returning device 1 by the connecting hose 2, and the needle head protective cover 11 is made of hard plastics so as to prevent the intravenous needle 3 from accidentally injuring medical care personnel.
When the utility model works, infusion liquid is filled into the liquid through pipe 6 through the liquid inlet 7, and is conveyed into the venous needle 3 through the liquid outlet 8 and the connecting hose 2, when the venous needle 3 is pricked into a blood vessel, the pressure in the blood vessel is larger than the outside atmospheric pressure above the hemispherical membrane 4, blood in the blood vessel returns to the connecting hose 2 through the venous needle 3, and the hemispherical membrane 4 is bulged upwards through the liquid penetrating port 9 under the pressure effect, so that the venous needle 3 is correctly pricked into the blood vessel, the infusion work can be carried out, when the venous needle 3 is not correctly pricked into the blood vessel, the blood return phenomenon cannot occur in the connecting hose 2, the hemispherical membrane 4 cannot bulge upwards, and the operation needs to be carried out again to avoid accidents.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (4)
1. A sensitive vacuum transfusion blood returning vein needle comprises a sheet sensitive blood returning device, a connecting hose and a vein needle, wherein the liquid outlet of the sheet sensitive blood returning device is connected with the vein needle through the connecting hose, the sensitive blood returning device is characterized in that the sheet sensitive blood returning device is composed of a hemispherical membrane, a hemispherical membrane seat, a liquid through pipe, a liquid inlet and a liquid outlet, the hemispherical membrane seat is in a bowl shape, the bottom in the hemispherical membrane seat is a semi-arc spherical surface, the liquid through pipe is arranged below the bottom in the hemispherical membrane seat, the middle upper part of the liquid through pipe is intersected with the semi-arc spherical surface at the bottom in the hemispherical membrane seat, an oval liquid through hole is formed in the semi-arc spherical surface at the bottom in the hemispherical membrane seat, the liquid inlet and the liquid outlet are respectively arranged at two ends of the liquid through pipe, the convex surface of the hemispherical membrane is downwards arranged in the hemispherical membrane seat, the outer edge of the hemispherical membrane is fixed on the upper opening of the hemispherical membrane seat, the downward convex hemispherical membrane is matched with the semi-arc spherical surface at the bottom in the hemispherical membrane seat, the convex hemisphere face of the hemisphere film is pressed on the half-arc sphere face and the liquid permeating opening at the bottom in the hemisphere film seat.
2. The sensitive vacuum infusion blood returning intravenous needle as claimed in claim 1, further comprising a hemispherical membrane fixing ring, wherein the hemispherical membrane fixing ring is buckled on the outer edge of the hemispherical membrane and is sealed and fixed on the upper opening of the hemispherical membrane seat together with the hemispherical membrane.
3. The sensitive vacuum infusion blood returning intravenous needle as claimed in claim 1, wherein the lowest position of the hemispherical center of the hemispherical membrane is higher than the horizontal center line of the liquid through tube.
4. The sensitive vacuum infusion blood return intravenous needle of claim 1, further comprising a needle shield, said needle shield being mounted over the intravenous needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121722136.5U CN216366179U (en) | 2021-07-28 | 2021-07-28 | Sensitive vacuum transfusion blood return vein needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121722136.5U CN216366179U (en) | 2021-07-28 | 2021-07-28 | Sensitive vacuum transfusion blood return vein needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216366179U true CN216366179U (en) | 2022-04-26 |
Family
ID=81240713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121722136.5U Active CN216366179U (en) | 2021-07-28 | 2021-07-28 | Sensitive vacuum transfusion blood return vein needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216366179U (en) |
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2021
- 2021-07-28 CN CN202121722136.5U patent/CN216366179U/en active Active
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