CN210933019U - Arteriovenous indwelling needle for hemodialysis puncture - Google Patents
Arteriovenous indwelling needle for hemodialysis puncture Download PDFInfo
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- CN210933019U CN210933019U CN201921227089.XU CN201921227089U CN210933019U CN 210933019 U CN210933019 U CN 210933019U CN 201921227089 U CN201921227089 U CN 201921227089U CN 210933019 U CN210933019 U CN 210933019U
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- catheter
- needle
- pipe
- flow control
- control mechanism
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Abstract
The utility model belongs to the technical field of the hemodialysis technique and specifically relates to a needle is kept somewhere with artery and vein to hemodialysis puncture, which comprises a pipe, be equipped with flow control mechanism on the pipe, flow control mechanism includes the locating piece, the locating piece side is equipped with the through hole, screw thread through-hole female connection has the screw thread post, the pipe top is equipped with liner protection mechanism. The utility model discloses a set up flow control mechanism on the pipe, can play direct hemostatic effect through flow control mechanism, need not to get hemostatic forceps again and carry out the centre gripping to the pipe and stanch, solved and kept somewhere needle silica gel pipe part too short, when leading to the machine to draw blood before with vascular forceps clip this part and inconvenient problem, still set up liner protection mechanism on the pipe in addition, prevent to keep somewhere in the time of skin-friendly increase travelling comfort and damage skin, arouse and press sore, surface of a wound infection scheduling problem.
Description
Technical Field
The utility model relates to a hemodialysis technical field especially relates to a hemodialysis puncture is with artery and vein indwelling needle.
Background
Uremic patients require hemodialysis treatment to save the life of the patient. The most widely used in China is the venous indwelling needle for hemodialysis imported from Japan, and the indwelling needle has the advantages of precise design, good puncture performance and the like. But still has the following defects that if the fixing is not firm, the patient is easy to fall off when the body position of the patient is changed, so that blood loss is caused, and dialysis is interrupted; the silica gel catheter part is too short, and the part is inconvenient to clamp by a vascular clamp before introducing blood; and the vascular clamp is a metal object with certain weight, is easy to pull the venous indwelling needle for dialysis so as to lead the needle to shift or even separate, is easy to clamp a patient and increases the pain of the patient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the existing indwelling needle silica gel catheter part in the prior art is too short and inconvenient when clamping the part by using vascular forceps before leading to blood infusion, and providing an arteriovenous indwelling needle for hemodialysis puncture.
In order to achieve the above purpose, the utility model adopts the technical scheme that: an arteriovenous indwelling needle for hemodialysis puncture comprises a catheter, wherein a catheter seat is fixed on the catheter, a clamping tube which is penetrated by the catheter is arranged on one side of the catheter seat, a luer connector is arranged on one side of the clamping tube, the end part of the luer connector is in threaded connection with a luer cover, the luer connector and the luer cover are penetrated by the catheter, a needle tube needle seat fixedly connected with the catheter is arranged on one side of the luer cover, a blood return part is arranged at the end part of the needle tube needle seat, a hemostatic plug is arranged at the end part of the blood return part, the blood return part is communicated with a needle tube which is fixed on the needle tube needle seat and is inserted into the catheter, a flow control mechanism is arranged on the catheter and comprises a positioning block fixed with the catheter seat, a through hole which is penetrated by the catheter is arranged on the side surface of the positioning block, a threaded through hole, the top end of the catheter is provided with a liner protection mechanism.
Preferably, a screwing piece is fixed at the top of the threaded column.
Preferably, the two sides of the positioning block are both rotatably connected with connecting columns, and butterfly wings are fixed at the top ends of the connecting columns.
Preferably, the liner protection mechanism includes the screw interface who sets up at the pipe end, threaded connection has the interface cap on the screw interface, interface cap and screw interface junction parcel have the silica gel bag.
Preferably, the top end of the needle tube is provided with a puncture bevel opening.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a set up flow control mechanism on the pipe, can play direct hemostatic effect through flow control mechanism, need not to get hemostatic forceps again and carry out the centre gripping to the pipe and stanch, solved and kept somewhere needle silica gel pipe part too short, when leading to the machine to draw blood before with vascular forceps clip this part and inconvenient problem, still set up liner protection mechanism on the pipe in addition, when close skin increases the travelling comfort, prevent to keep somewhere damage skin in the period, arouse and press sore, surface of a wound infection scheduling problem.
Drawings
FIG. 1 is a schematic structural view of an arteriovenous indwelling needle for hemodialysis puncture of the present invention;
fig. 2 is an explosion view of the catheter in the arteriovenous indwelling needle for hemodialysis puncture.
In the figure: the device comprises a catheter 1, a catheter seat 2, a clamping tube 3, a luer connector 4, a luer cover 5, a needle tube needle seat 6, a blood return part 7, a hemostatic plug 8, a needle tube 9, a positioning block 10, a through hole 11, a threaded through hole 12, a threaded column 13, a screwing piece 14, a connecting column 15, a butterfly wing 16, a spiral connector 17, a connector cap 18 and a silica gel bag 19.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
As shown in fig. 1-2, an arteriovenous indwelling needle for hemodialysis puncture comprises a catheter 1, a catheter holder 2 is fixed on the catheter 1, a clamping tube 3 penetrated by the catheter 1 is arranged on one side of the catheter holder 2, a luer connector 4 is arranged on one side of the clamping tube 3, a luer cap 5 is in threaded connection with the end part of the luer connector 4, the luer connector 4 and the luer cap 5 are penetrated by the catheter 1, a needle tube needle holder 6 fixedly connected with the catheter 1 is arranged on one side of the luer cap 5, a blood returning part 7 is arranged on the end part of the needle tube needle holder 6, a hemostatic plug 8 is arranged on the end part of the blood returning part 7, the blood returning part 7 is communicated with a needle tube 9 fixed on the needle tube needle holder 6 and inserted in the catheter 1, a puncture bevel is arranged on the top end of the catheter 9, a flow control mechanism is arranged on the catheter 1, when the venous indwelling needle is used, the needle tube 9 is inserted into a vein by puncturing bevel skin of the needle, blood can flow into the blood returning part 7 through the needle tube 9, whether the puncture position is correct or not can be known through the blood returning part 7, when the puncture position is correct, the needle tube 9 is completely punctured into a vein, then the luer connector 4 is unscrewed, the luer cover 5 is detached, the needle tube 9 can be drawn out from the catheter 1, then the separation of the catheter 1, the clamping tube 3, the luer connector 4, the luer cover 5, the needle tube needle base 6, the blood returning part 7, the hemostatic plug 8 and the needle tube 9 is realized, then the flow control mechanism is directly adjusted, and the blood can be intercepted.
The flow control mechanism comprises a positioning block 10 fixed with the catheter base 2, a through hole 11 penetrated by the catheter 1 is formed in the side face of the positioning block 10, a threaded through hole 12 is formed in the top of the through hole 11, a threaded column 13 is connected with the threaded through hole 12 in an internal thread mode, a screwing piece 14 is fixed to the top of the threaded column 13, a gasket protection mechanism is arranged at the top end of the catheter 1, and when hemostasis is achieved, the threaded column 13 only needs to be screwed into the threaded through hole 12 to press the catheter 1.
The locating piece 10 both sides all rotate and are connected with spliced pole 15, and spliced pole 15 top is fixed with butterfly wing 16, and through setting up the butterfly wing 16 that can change, the puncture of being convenient for on one hand, on the other hand has increased the fixable area, and the third is that the edge is mellow and difficult for haring patient's skin, and it is more firm to make the needle fixed through the adhesive tape, is difficult for deviating from, has overcome current vein for hemodialysis and has kept somewhere the needle and drop the not enough easily.
Liner protection mechanism is including setting up the screw interface 17 at 1 tip of pipe, threaded connection has interface cap 18 on screw interface 17, interface cap 18 and screw interface 17 junction parcel have silica gel bag 19, set up liner protection mechanism, it links to each other with the arteriovenous joint of dialysis tubing to be convenient for through interface cap 18, close skin prevents to keep somewhere in the time of increasing the travelling comfort and damages skin, arouse and press sore, wound surface infection scheduling problem, in order to avoid haring the patient healthy, increase patient's economic burden.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. An arteriovenous indwelling needle for hemodialysis puncture comprises a catheter (1) and is characterized in that a catheter seat (2) is fixed on the catheter (1), a clamping tube (3) penetrated by the catheter (1) is arranged on one side of the catheter seat (2), a luer connector (4) is arranged on one side of the clamping tube (3), a luer cover (5) is in threaded connection with the end part of the luer connector (4), the luer connector (4) and the luer cover (5) are penetrated by the catheter (1), a needle tube seat (6) fixedly connected with the catheter (1) is arranged on one side of the luer cover (5), a blood return part (7) is arranged on the end part of the needle tube seat (6), a hemostatic plug (8) is arranged on the end part of the blood return part (7), the blood return part (7) is communicated with a needle tube (9) which is fixed on the needle tube seat (6) and inserted into the catheter (1), and a flow control mechanism is arranged on the catheter (1), the flow control mechanism comprises a positioning block (10) fixed with a catheter seat (2), a through hole (11) penetrated by a catheter (1) is formed in the side face of the positioning block (10), a threaded through hole (12) is formed in the top of the through hole (11), a threaded column (13) is connected to the threaded through hole (12) in an internal thread mode, and a gasket protection mechanism is arranged at the top end of the catheter (1).
2. The arteriovenous indwelling needle for hemodialysis puncture according to claim 1, wherein a screwing piece (14) is fixed to the top of the threaded post (13).
3. The arteriovenous indwelling needle for hemodialysis puncture according to claim 1, wherein a connecting column (15) is rotatably connected to both sides of the positioning block (10), and a butterfly wing (16) is fixed to the top end of the connecting column (15).
4. The arteriovenous indwelling needle for hemodialysis puncture according to claim 1, wherein the liner protecting mechanism comprises a screw port (17) provided at the end of the catheter (1), a port cap (18) is connected to the screw port (17) by screw thread, and a silica gel bag (19) is wrapped at the joint of the port cap (18) and the screw port (17).
5. The arteriovenous indwelling needle for hemodialysis puncture according to claim 1, wherein the needle tube (9) is provided at its tip with a puncture bevel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921227089.XU CN210933019U (en) | 2019-07-31 | 2019-07-31 | Arteriovenous indwelling needle for hemodialysis puncture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921227089.XU CN210933019U (en) | 2019-07-31 | 2019-07-31 | Arteriovenous indwelling needle for hemodialysis puncture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210933019U true CN210933019U (en) | 2020-07-07 |
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ID=71385266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921227089.XU Active CN210933019U (en) | 2019-07-31 | 2019-07-31 | Arteriovenous indwelling needle for hemodialysis puncture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210933019U (en) |
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2019
- 2019-07-31 CN CN201921227089.XU patent/CN210933019U/en active Active
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