CN218739075U - Arteriovenous internal fistula puncture needle - Google Patents
Arteriovenous internal fistula puncture needle Download PDFInfo
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- CN218739075U CN218739075U CN202220958244.0U CN202220958244U CN218739075U CN 218739075 U CN218739075 U CN 218739075U CN 202220958244 U CN202220958244 U CN 202220958244U CN 218739075 U CN218739075 U CN 218739075U
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- hose
- needle
- steel needle
- rotary switch
- puncture needle
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Abstract
The utility model discloses an arteriovenous internal fistula puncture needle, which comprises a steel needle, a hose and a rotary switch; a valve is arranged at one end of the hose connected with the steel needle, and the tail end of the steel needle penetrates through the valve and is detachably connected with the hose; a hose blocking piece is arranged inside the other end of the hose and is detachably connected with the rotary switch; the rotary switch comprises a pipe body and a switch separation blade arranged at one end of the pipe body, wherein the hose separation blade and the switch separation blade are semicircular. The steel needle of the puncture needle of the utility model can be disassembled from the hose, thereby reducing the disposal cost of the garbage of the sharp instrument. The rotary switch can timely close the puncture needle when the puncture is finished and whether the steel needle enters the blood vessel or not, before the needle is pulled out or when the blood is introduced to the machine, so that the blood loss of a patient is avoided.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a arteriovenous internal fistula pjncture needle.
Background
Arteriovenous internal fistula is one of surgical operations and is mainly used for hemodialysis treatment. The arteriovenous internal fistula is a small operation for blood vessel anastomosis, wherein an artery at the part of a forearm close to a wrist and an adjacent vein are sutured, so that arterial blood flows in the anastomosed vein to form an arteriovenous internal fistula. The arteriovenous internal fistula blood vessel can provide sufficient blood for hemodialysis treatment, and guarantee is provided for the sufficiency of the hemodialysis treatment.
The puncture needle and the hose that present clinical use are integrated into one piece structure, and its shortcoming is as follows: 1. after the puncture needle is pulled out, the whole puncture needle is discarded, the sharp part of the puncture needle only accounts for one fifth of the whole puncture needle, and the other parts are hoses without being discarded into a sharp air garbage can. The puncture steel needle can not separate this current technique of point and does not accomplish yet with the hose, except that in addition, the weight of sharp gas garbage bin has been increased to unnecessary part lost into. And the puncture needle occupies a large space, and the times of replacing the sharp instrument garbage box are required to be increased. 2. Blood remained in the sharp needle of the patient leaks after the needle is pulled out, so that the environment is easily polluted, and particularly, the blood of a tuberculosis patient or an infectious disease patient is infectious. 3. The existing puncture needle realizes blocking of blood flow in a hose by clamping the hose through a clamp, but clinical work does not avoid the condition that a nurse forgets to clamp the clamp, so that blood of a patient flows out.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect and not enough, provide a arteriovenous internal fistula pjncture needle, steel needle and hose are separable, have reduced the treatment cost of sharp ware rubbish, and possess the switch function, can not lead to patient's blood loss.
The purpose of the utility model can be realized by the following technical proposal: an arteriovenous internal fistula puncture needle comprises a steel needle, a hose and a rotary switch; a valve is arranged at one end of the hose connected with the steel needle, and the tail end of the steel needle penetrates through the valve and is detachably connected with the hose; a hose blocking piece is arranged inside the other end of the hose and is detachably connected with the rotary switch; the rotary switch comprises a pipe body and a switch separation blade arranged at one end of the pipe body, wherein the hose separation blade and the switch separation blade are semicircular.
Furthermore, the needle wing is also included and is arranged on the steel needle.
Furthermore, the tail end of the steel needle is provided with an elastic plug.
Furthermore, a boss is arranged on the pipe body.
Further, the valve comprises three flaps, and a gap is arranged between every two flaps.
Compared with the prior art, the utility model, following advantage and beneficial effect have: the steel needle of the puncture needle of the utility model can be disassembled from the hose, thereby reducing the disposal cost of the garbage of the sharp instrument. Meanwhile, the valve is arranged, and after the steel needle is separated, the valve can isolate the residual blood and the normal saline mixed liquid in the hose, so that the leakage of the mixed liquid is prevented, the pollution to the ground of a treatment area is greatly reduced, and the probability of hematogenous infection in a hospital is reduced. The rotary switch can timely close the puncture needle when the puncture is finished and whether the steel needle enters the blood vessel or not, before the needle is pulled out or when the blood is introduced to the machine, so that the blood loss of a patient is avoided.
Drawings
FIG. 1 is a schematic diagram showing the result of an arteriovenous internal fistula puncture needle according to an embodiment of the present invention;
FIG. 2 is a schematic view of the steel needle structure in the embodiment of the present invention;
FIG. 3 is a schematic view of a hose structure according to an embodiment of the present invention;
fig. 4 is a schematic view of a valve structure according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a rotary switch according to an embodiment of the present invention.
Wherein: 1: steel needle, 11: elastic plug, 2: hose, 21: valve, 211: flap, 22: hose retaining sheet, 3: rotary switch, 31: a pipe body, 32: switch flap, 33: boss, 4: and (4) needle wings.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
An arteriovenous internal fistula puncture needle comprises a steel needle 1, a hose 2 and a rotary switch 3.
The steel needle can be dismantled with the hose and be connected, and the steel needle end is equipped with elasticity stopper 11, and the elasticity stopper can make steel needle and hose assembly inseparable, prevents that the steel needle from deviating from the hose. The steel needle is also provided with a needle wing 4.
One end of the hose connected with the steel needle is provided with a valve 21, and the tail end of the steel needle penetrates through the valve and is detachably connected with the hose. The valve comprises three flaps 211, with a gap between each two flaps. The valve is made of soft material, and when the tail end of the steel needle passes through the valve, the valve sheet is tightly attached to the tail end of the steel needle. When the steel needle is pulled out, the flap automatically rebounds to isolate the residual blood and the normal saline mixed liquid in the hose, so that the leakage of the mixed liquid is prevented, the pollution to the ground of a treatment area is greatly reduced, and the probability of hematogenous infection in a hospital is reduced. The other end of the hose is provided with a hose stop piece 22 inside and is detachably connected with the rotary switch.
The rotary switch includes a tube 31 and a switch stopper 32 provided at one end of the tube. The hose blocking piece and the switch blocking piece are semicircular, and when the rotary switch is twisted clockwise to enable the hose blocking piece and the switch blocking piece to be overlapped, the tail end of the hose is in an open state. When the rotary switch is twisted anticlockwise to enable the hose blocking piece and the switch blocking piece to form a circle, the tail end of the hose is in a closed state. Set up rotary switch, can in time close the pjncture needle when the puncture finishes to inspect whether the steel needle gets into the blood vessel, before pulling out the needle or draw the blood to go up the machine to the cooperation nurse operation custom, the levogyration is then closed promptly, and the dextrorotation is then closed, reduces to lead to the patient to lose blood because of forgetting to close the switch. The boss 33 is arranged on the tube body, and can increase the friction force when the rotary switch is twisted, so that the rotary switch cannot be easily rotated in a closed state.
The use principle of an arteriovenous internal fistula puncture needle comprises the following steps: before the puncture needle is not used, the rotary switch is in a closed state, the steel needle is used for puncture, and after the rotary switch is connected with the blood-drawing machine, the rotary switch is opened to circulate blood. When the needle needs to be pulled out, the rotary switch is closed, and the pulled-out steel needle is placed at a sharp device garbage storage position.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (5)
1. An arteriovenous internal fistula puncture needle is characterized by comprising a steel needle, a hose and a rotary switch; a valve is arranged at one end of the hose connected with the steel needle, and the tail end of the steel needle penetrates through the valve and is detachably connected with the hose; a hose blocking piece is arranged inside the other end of the hose and is detachably connected with the rotary switch; the rotary switch comprises a pipe body and a switch separation blade arranged at one end of the pipe body, wherein the hose separation blade and the switch separation blade are semicircular.
2. The arteriovenous internal fistula puncture needle according to claim 1, further comprising a needle wing mounted on the steel needle.
3. An arteriovenous internal fistula puncture needle according to claim 1, wherein an elastic plug is arranged at the tail end of the steel needle.
4. The arteriovenous internal fistula puncture needle according to claim 1, wherein a boss is arranged on the tube body.
5. An arteriovenous internal fistula puncture needle according to claim 1 wherein the valve comprises three flaps with a gap between each two flaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220958244.0U CN218739075U (en) | 2022-04-22 | 2022-04-22 | Arteriovenous internal fistula puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220958244.0U CN218739075U (en) | 2022-04-22 | 2022-04-22 | Arteriovenous internal fistula puncture needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218739075U true CN218739075U (en) | 2023-03-28 |
Family
ID=85643080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220958244.0U Active CN218739075U (en) | 2022-04-22 | 2022-04-22 | Arteriovenous internal fistula puncture needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218739075U (en) |
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2022
- 2022-04-22 CN CN202220958244.0U patent/CN218739075U/en active Active
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