CN212592139U - Special blood taking needle for hemodialysis - Google Patents

Abstract

The utility model provides a special blood taking needle of hemodialysis, including venipuncture mechanism and vein blood sampling mechanism, venipuncture mechanism includes transparent hose, transparent hose one end is connected with the venipuncture needle, the venipuncture needle upper shield is equipped with the venipuncture needle protective sheath, the transparent hose surface that connects the venipuncture needle correspondence is connected with the needle handle, the cross-under has the flow stopping clamp on the transparent hose, the transparent hose other end is connected with transparent hard tube, vein blood sampling mechanism includes the blood taking needle connecting seat and the blood taking needle file that integrated into one piece communicates each other, the hollow inner wall of blood taking needle connecting seat is connected with radial circle piece, be equipped with on the radial circle piece and extend and remain the cavity post of predetermined clearance with blood taking needle connecting seat inner wall to blood taking needle connecting seat outer end, cavity post closely pegs graft in transparent hard tube, blood taking needle file outer end is connected with the bottle plug. This application can avoid gathering blood and be polluted and realize quantitative blood sampling.

Description

Special blood taking needle for hemodialysis

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to special blood taking needle of hemodialysis.

Background

Hemodialysis (HD) is one of the alternative treatments for the kidney of patients with acute and chronic renal failure. The method comprises the steps of draining blood in vivo to the outside of the body, enabling the blood and electrolyte solution (dialysate) with similar body concentration to be inside and outside one hollow fiber through a dialyzer consisting of a plurality of hollow fibers, and carrying out substance exchange through dispersion, ultrafiltration, adsorption and convection principles, so as to remove metabolic waste in the body and maintain the balance of electrolyte and acid and alkali; at the same time, the excess water in the body is removed, and the whole process of purified blood reinfusion is called hemodialysis.

At present, blood needs to be collected from a vein of a patient before and after hemodialysis as a blood sample to be checked of a hemodialysis patient, and particularly, after blood is collected for the hemodialysis patient through disposable venipuncture, a spiral small cap far away from one end of a puncture needle tube needs to be unscrewed, and then the blood collected in a hose is poured into a disposable vacuum blood collection tube. However the inventor of the utility model discovers through research that blood in the hose end will directly expose in the air after unscrewing the little cap of spiral, can cause blood to be contaminated, before pouring blood into disposable vacuum blood sampling tube, need unscrew the tube cap of disposable vacuum blood sampling tube simultaneously, and unscrew the intraductal negative pressure vacuum of disposable vacuum blood sampling of back and all released basically, vacuum blood sampling tube cap drops easily, therefore can't realize patient's ration blood sampling, cause blood to be contaminated and environmental pollution.

SUMMERY OF THE UTILITY MODEL

To the in-process of pouring into disposable vacuum test tube after having at present to dialyse patient's blood sampling through disposable venipuncture, cause the technical problem that blood of gathering is polluted and can't realize patient's ration blood sampling easily, the utility model provides a novel special blood taking needle of hemodialysis.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a special blood taking needle for hemodialysis comprises a vein puncture mechanism and a vein blood sampling mechanism, wherein the vein puncture mechanism comprises a transparent hose, one end of the transparent hose is connected with a vein puncture needle, a vein puncture needle protective sleeve which is sleeved with one end of the transparent hose is covered on the vein puncture needle, the surface of the transparent hose which is connected with the vein puncture needle and corresponds to the vein puncture needle is connected with a needle handle, a flow stopping clamp is connected onto the transparent hose in a penetrating manner, and the other end of the transparent hose is connected with a transparent hard tube; the venous blood sampling mechanism includes blood taking needle connecting seat and blood taking needle file that the integrated into one piece communicates each other, the cavity inner wall of blood taking needle connecting seat is connected with radial circle piece, be equipped with on the radial circle piece and extend and remain the cavity post of inserting in predetermined clearance with blood taking needle connecting seat inner wall to blood taking needle connecting seat outer end, the outer end of transparent hard tube is connected with the outer end of blood taking needle connecting seat, the cavity is inserted the post and is closely pegged graft in transparent hard tube and transparent hard tube outer end and closely cooperate in the predetermined clearance between cavity post and the blood taking needle connecting seat inner wall, the outer end fixedly connected with bottle plug pjncture needle of blood taking needle file, the cover is equipped with the hemostasis.

Compared with the prior art, the utility model provides a when special blood taking needle of hemodialysis uses, take off vein puncture needle protective sheath earlier, insert patient's vein with the vein pjncture needle after that, then insert the bottle plug pjncture needle that the cover has hemostasis sheath in the disposable vacuum blood sampling pipe together, specifically in the in-process of inserting the bottle plug pjncture needle, the bottle plug pjncture needle will stab the hemostasis sheath of contradicting on disposable vacuum blood sampling pipe plastic tube cap under the effect of external force, then the bottle plug pjncture needle passes the plastic tube cap and gets into disposable vacuum blood sampling pipe, can not make the negative pressure in disposable vacuum blood sampling pipe released from this, later loosen the flow stopping clamp on the transparent hose, blood that the vein pjncture needle was gathered under the suction of the interior negative pressure of vacuum blood sampling pipe, will flow through the transparent hose in proper order, transparent hard tube, the cavity of connecting, The blood taking needle seat and the bottle plug puncture needle enter the disposable vacuum blood taking tube, so that blood pollution caused by blood exposure in the air is effectively avoided, quantitative blood taking can be realized according to the unreleased negative pressure quantity preset in the disposable vacuum blood taking tube, and the blood taking value is accurate.

Further, the surface of the transparent hard tube is connected with a tube handle.

Further, the outer end surface of transparent hard tube is equipped with the external screw thread, the blood taking needle connecting seat inner wall surface that the post is relative is inserted to cavity is equipped with the internal thread with external screw thread fit.

Further, the upper cover of the hemostatic sheath is provided with a hemostatic sheath protective sleeve which is sleeved with the surface of the blood taking needle seat.

Further, the hemostatic sheath is made of butyl rubber.

Drawings

Fig. 1 is a schematic view of the blood taking needle dedicated for hemodialysis.

In the figure, 1, a venipuncture mechanism; 10. a transparent hose; 11. a venipuncture needle; 12. a vein puncture needle protective sleeve; 13. a needle handle; 14. a flow stopping clip; 15. a transparent hard tube; 16. a pipe handle; 2. a venous blood collection mechanism; 20. a blood taking needle connecting seat; 21. a blood taking needle seat; 22. a radial round block; 23. inserting a column in a hollow way; 24. a bottle stopper puncture needle; 25. a hemostatic sheath; 26. hemostatic sheath.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the utility model provides a special blood taking needle for hemodialysis, including a venipuncture mechanism 1 and a venipuncture mechanism 2, the venipuncture mechanism 1 includes a transparent hose 10, one end of the transparent hose 10 is connected with a venipuncture needle 11, a venipuncture needle protective sleeve 12 sleeved with one end of the transparent hose 10 is covered on the venipuncture needle 11, the surface of the transparent hose connected with the venipuncture needle 11 is connected with a needle handle 13, the venipuncture needle 11 can be conveniently inserted into the vein of a patient through the needle handle 13, a flow stopping clip 14 is connected on the transparent hose 10 in a penetrating way, and the other end of the transparent hose 10 is connected with (as an integrated connection) a transparent hard tube 15; the venous blood collection mechanism 2 comprises a blood collection needle connecting seat 20 and a blood collection needle seat 21 which are integrally formed and communicated with each other, the hollow inner wall of the blood collection needle connecting seat 20 is connected with a radial round block 22, a hollow inserting column 23 which extends towards the outer end of the blood collection needle connecting seat 20 and keeps a preset gap with the inner wall of the blood collection needle connecting seat 20 is arranged on the radial round block 22, namely, the hollow inserting column 23 is long on the radial round block 22 and keeps a preset gap with the inner wall of the blood collection needle connecting seat 20, after the outer end of a transparent hard tube 15 is connected with the outer end of the blood collection needle connecting seat 20, the hollow inserting column 23 is tightly inserted in the transparent hard tube 15, the outer end of the transparent hard tube 15 is tightly matched with the preset gap between the inner walls of the blood collection needle connecting seat 20, so that the tight connection of the transparent hard tube 15 and the blood, the bottle stopper puncture needle 24 is sleeved with a hemostatic sheath 25 fixedly connected with the outer end of the blood taking needle seat 21, and the bottle stopper puncture needle 24 can be sealed and protected through the hemostatic sheath 25.

Compared with the prior art, the utility model provides a when special blood taking needle of hemodialysis uses, take off vein puncture needle protective sheath earlier, insert patient's vein with the vein pjncture needle after that, then insert the bottle plug pjncture needle that the cover has hemostasis sheath in the disposable vacuum blood sampling pipe together, specifically in the in-process of inserting the bottle plug pjncture needle, the bottle plug pjncture needle will stab the hemostasis sheath of contradicting on disposable vacuum blood sampling pipe plastic tube cap under the effect of external force, then the bottle plug pjncture needle passes the plastic tube cap and gets into disposable vacuum blood sampling pipe, can not make the negative pressure in the disposable vacuum blood sampling pipe released from this, later loosen the flow stopping clamp on the transparent hose, the blood that the vein pjncture needle gathered under the suction of the interior negative pressure of vacuum blood sampling pipe, will flow through the transparent hose in proper order, transparent hard tube, the interior cavity of, The blood taking needle seat and the bottle plug puncture needle enter the disposable vacuum blood taking tube, so that blood pollution caused by blood exposure in the air is effectively avoided, quantitative blood taking can be realized according to the unreleased negative pressure quantity preset in the disposable vacuum blood taking tube, and the blood taking value is accurate.

As a specific embodiment, please refer to FIG. 1, a tube handle 16 is connected to the surface of the transparent hard tube 15, so that when the transparent hard tube 15 is tightly connected with the blood lancet connecting seat 20, fingers can lean on the tube handle 16 to realize connection conveniently.

As a specific embodiment, the outer end surface of the transparent hard tube 15 is provided with an external thread, the inner wall surface of the blood taking needle connecting seat 20 opposite to the hollow inserting column 23 is provided with an internal thread matched with the external thread, namely, the connection between the transparent hard tube 15 and the blood taking needle connecting seat 20 can be realized very conveniently through the screw connection matching of the internal thread and the external thread, and the tightness of the connection between the transparent hard tube 15 and the blood taking needle connecting seat is ensured.

As a specific embodiment, referring to fig. 1, a hemostatic sheath protective sleeve 26 sleeved on the surface of the lancet holder 21 is covered on the hemostatic sheath 25, and the hemostatic sheath 25 can be prevented from being accidentally punctured by the hemostatic sheath protective sleeve 26, so as to better protect the hemostatic sheath 25.

In a specific embodiment, the hemostatic sheath 25 is made of a conventional butyl rubber material, and the butyl rubber has good air tightness, heat resistance, ozone resistance, aging resistance, chemical resistance, and good resistance to sunlight and ozone, so that the hemostatic sheath is very suitable for protecting the stopper puncture needle 24. In addition, the transparent hose 10 and the transparent hard tube 15 may be made of the existing polyvinyl chloride (PVC), the lancet connecting seat 20 and the lancet needle holder 21 may be made of the existing ABS material, and the venipuncture needle protecting sheath 12 and the hemostatic sheath protecting sheath 26 may be made of the existing Polyethylene (PE).

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims (5)

1. A special blood taking needle for hemodialysis is characterized by comprising a venipuncture mechanism and a venipuncture blood taking mechanism, wherein the venipuncture mechanism comprises a transparent hose, one end of the transparent hose is connected with a venipuncture needle, a venipuncture needle protective sleeve which is sleeved with one end of the transparent hose is covered on the venipuncture needle, the surface of the transparent hose which is connected with the venipuncture needle and corresponds to the venipuncture needle is connected with a needle handle, a flow stopping clamp is connected to the transparent hose in a penetrating manner, and the other end of the transparent hose is connected with a transparent hard tube; the venous blood sampling mechanism includes blood taking needle connecting seat and blood taking needle file that the integrated into one piece communicates each other, the cavity inner wall of blood taking needle connecting seat is connected with radial circle piece, be equipped with on the radial circle piece and extend and remain the cavity post of inserting in predetermined clearance with blood taking needle connecting seat inner wall to blood taking needle connecting seat outer end, the outer end of transparent hard tube is connected with the outer end of blood taking needle connecting seat, the cavity is inserted the post and is closely pegged graft in transparent hard tube and transparent hard tube outer end and closely cooperate in the predetermined clearance between cavity post and the blood taking needle connecting seat inner wall, the outer end fixedly connected with bottle plug pjncture needle of blood taking needle file, the cover is equipped with the hemostasis.

2. The special blood collection needle for hemodialysis of claim 1, wherein a handle is attached to the surface of the transparent hard tube.

3. The special blood taking needle for hemodialysis of claim 1, wherein an external thread is formed on the outer end surface of the transparent hard tube, and an internal thread matched with the external thread is formed on the inner wall surface of the blood taking needle connecting seat opposite to the hollow insertion column.

4. The special blood taking needle for hemodialysis of claim 1, wherein the hemostatic sheath is covered with a hemostatic sheath protective sleeve sleeved with the surface of the blood taking needle seat.

5. The special blood collection needle for hemodialysis of claim 1, wherein the hemostatic sheath is made of butyl rubber material.

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