CN204050516U - A kind of safety transfusion needle - Google Patents

Abstract

The utility model discloses a kind of safety transfusion needle, aim to provide a kind of safer and the transfusion needle of flow can be controlled, comprise syringe needle, conduit, needle handle, it is characterized in that described conduit and needle handle are made up of soft material, the end of conduit is provided with the flow restriction for coutroi velocity, and its drip irrigation device can turn direction by nut, controls the internal diameter of rubber catheter, thus playing the effect of regulating agent flowing velocity, this utility model is applicable to clinical treatment.

Description

A kind of safety transfusion needle

Technical field

This utility model relates to a kind of safety transfusion needle, belongs to technical field of medical instruments.

Background technology

At present, the transfusion needle on market, it comprises syringe needle, needle handle, conduit.

Although this transfusion needle manufactures simple and easy, convenient, but its function singleness, only can complete basic transfusion work, cannot regulate the flow velocity in transfusion needle, need separately to add on tube for transfusion the adjustment that adjusting device could realize flow velocity, wherein there is the more wasting of resources.

Existing infusion techn is generally: transfusion needle access human vein, tube for transfusion connects infusion bottle and transfusion needle, and complete transfusion, infusion adjusting device in the past is generally all located on tube for transfusion, medical personnel have pricked pin to patient and after fixing transfusion needle, then stand up adjusting transfusion device, three actions are divided into two places to implement, if period medical personnel action is excessive, touch tube for transfusion, easily cause transfusion needle to come off, secondary acupuncture treatment need be carried out to patient, cause secondary injury.

Utility model content

For the deficiency that prior art exists, the purpose of this utility model is the safety transfusion needle providing a kind of scalable transfusion speed.

For achieving the above object, this utility model provides following technical scheme: a kind of safety transfusion needle, comprises syringe needle, conduit, needle handle, it is characterized in that described conduit and needle handle are made up of soft material, and the end of conduit is provided with the flow restriction for coutroi velocity.

By adopting technique scheme, medical personnel and patient can the speeds of free adjustment transfusion.

This utility model is set to further: described flow restriction comprises expansion tube and is located at the nut outside described expansion tube; Described expansion tube comprises opening and end; Described opening is flap opening, and direction is towards syringe needle; Described end imperforation and have projection; The wall thickness of described expansion tube successively decreases from opening to end; Described nut is positioned at expansion tube end and the outer circumference surface of expansion tube is connected with nut thread.

By adopting technique scheme, turn the flexible of nut direction scalable expansion tube, and then change flow velocity, expansion tube and nut screw connection use, the direction that turns by nut regulates the flexible of expansion tube, nut moves to opening direction, expansion tube reduces, nut terminad moves, expansion tube becomes large, the effect of end-boss is, can ensure that nut is turning in process and nut will caused to come off because of turning clockwise excessive, play certain protective effect, the threaded engagement of nut and expansion tube outer wall, turn direction and determine nut moving direction, thus it is flexible to control expansion tube.

This utility model is set to further: described conduit is provided with groove and mutually agrees with expansion tube, and groove surfaces and expansion tube inner surface fit tightly.

By adopting technique scheme, expansion tube can be fixed on conduit, not easily produces mobile or come off at use procedure expansion tube.

This utility model is set to further: described conduit and needle handle are made up of quality of rubber materials.

By adopting technique scheme, conduit has moderate hardness and elasticity, both can play fixation, again small size deformation can occur, and together can change in expansion tube deformation process, thus changes catheter diameter, ensures the controlling functions of flow velocity.

Accompanying drawing explanation

Fig. 1 is the structural representation of this utility model safety transfusion needle embodiment;

Fig. 2 is the tightening state figure of this utility model safety transfusion needle;

Fig. 3 is the A place enlarged drawing in Fig. 2;

Fig. 4 is the non-tightening state figure of this utility model safety transfusion needle;

Fig. 5 is the B place enlarged drawing in Fig. 4.

Reference numeral: 1, syringe needle; 2, conduit; 3, needle handle; 4, expansion tube; 5, nut 6, opening; 7, end.

Detailed description of the invention

For the deficiency that prior art exists, the purpose of this utility model is the safety transfusion needle providing a kind of scalable transfusion speed.

Referring to figs. 1 through Fig. 5, this utility model safety transfusion needle embodiment is described further.

As shown in Figures 1 to 5, a kind of safety transfusion needle, comprises syringe needle 1, conduit 2, needle handle 3, and it is characterized in that described conduit 2 and needle handle 3 are made up of soft material, the end of conduit 2 is provided with the flow restriction for coutroi velocity.

Infusion adjusting device in the past is generally all located on tube for transfusion, medical personnel have pricked pin to patient and after fixing transfusion needle, then to stand up adjusting transfusion device, if three actions are divided into medical personnel's action between two place's implementation periods excessive, touch tube for transfusion, transfusion needle is easily caused to come off, secondary acupuncture treatment need be carried out to patient, cause secondary injury, after adopting this transfusion needle, the speed that medical personnel and patient can be infused by current-limiting apparatus free adjustment, instead of regulate flow velocity by the flow-stop valve on regulating transfusion pipe, material can be saved to a great extent on the one hand, reduce the wasting of resources, medical personnel are when helping patient fluid infusion simultaneously, syringe needle 1 can be inserted, fixing transfusion needle, these three steps of regulating transfusion flow velocity are unified concentrates on hands portion, facilitate the operation of medical personnel, simultaneously patient can under doctor entrusts regulating transfusion flow velocity voluntarily, avoid patient frequently to rise to sit and touch tube for transfusion and the transfusion needle that causes such as to come off at the problem.

Wherein, described flow restriction comprises expansion tube 4 and the nut 5 be located at outside described expansion tube 4; Described expansion tube 4 comprises opening 6 and end 7; Described opening 6 is flap opening, and direction is towards syringe needle 1; Described end 7 imperforation and have projection; The wall thickness of described expansion tube 4 successively decreases from opening 6 to end 7; Described nut 5 is positioned at expansion tube 4 end 7 and the outer circumference surface of expansion tube 4 is threaded with nut 5.

By turning nut 5 direction, regulate the flexible of expansion tube 4, drive the flexible of conduit 2 internal diameter, play the effect regulating flow velocity, expansion tube 4 and nut 5 with the use of, the direction that turns by nut 5 regulates the flexible of expansion tube 4, nut 5 moves to opening 6 direction, and expansion tube 4 internal diameter reduces, expansion tube 4 extruded conduit 2 outer wall, conduit 2 internal diameter diminishes, and flow velocity reduces, nut 5 terminad 7 moves, expansion tube 4 internal diameter becomes large, conduit 2 reinstatement under elastic reaction, conduit 2 internal diameter becomes large, flow velocity is replied, the effect of end 7 projection is, can ensure that nut 5 is turning in process and nut 5 will caused to come off because of turning clockwise excessive, play certain protective effect, the threaded engagement of nut 5 and expansion tube 4 outer wall, turn direction and determine nut 5 moving direction, thus it is flexible to control expansion tube 4, rational threaded engagement, it is more smooth when nut can be allowed to turn, reducing turns in process, the shift in position of transfusion needle, improve operability and safety.

Secondly, described conduit is provided with groove and mutually agrees with expansion tube, and groove surfaces and expansion tube 4 inner surface fit tightly.

Expansion tube 4 is fixed on conduit 2, and during use, expansion tube 4 does not produce mobile or comes off, and facilitates patient and nurse to regulate flow velocity, turn improves safety.

Secondly, described conduit 2 and needle handle 3 are made up of quality of rubber materials.

Conduit 2 has moderate hardness and elasticity, both can play fixation, again small size deformation can occur, together can change in expansion tube 4 deformation process, thus change conduit 2 internal diameter, ensure the controlling functions of flow velocity, needle handle 3 also adopts quality of rubber materials, mainly the integrated design of conveniently manufacturing process, save the connection of needle handle 3 and conduit 2, reduce Production Time, reduce costs, raise the efficiency.

During use, after transfusion needle passes into medicament, after the gas in emptying transfusion needle and tube for transfusion, pinch needle handle 3, syringe needle 1 is aimed at vein and is thrust skin, with medical proof fabric, conduit 2, needle handle 3 are fixed on skin surface, when needs regulate infusion flow rate: be rotated counterclockwise nut 5, nut 5 moves to expansion tube 4 opening part, expansion tube 4 extruded conduit 2 wall, conduit 2 internal diameter diminishes, and causes flow in the unit interval to reduce, thus reduces transfusion speed; If dextrorotation turn nut 5, nut 5 moves to expansion tube 4 end, and conduit 2 wall recovers original state, and conduit 2 internal diameter recovers original size, and cause flow in the unit interval to get back to original state, transfusion speed is replied.

The above makes preferred implementation of the present utility model, and under not departing from the prerequisite of this utility model principle for the person of ordinary skill of the art, can also make some modification and improvement, these also should be considered as protection domain of the present utility model.

Claims (4)

1. a safety transfusion needle, comprises syringe needle, conduit, needle handle, it is characterized in that: described conduit is made up of soft material, and the end of conduit is provided with the flow restriction for controlling flow rate of liquid.

2. safety transfusion needle according to claim 1, is characterized in that: described flow restriction comprises expansion tube and is sheathed on the nut outside described expansion tube; Described expansion tube comprises opening and end; Described opening is flap opening, and the direction of described opening is towards syringe needle; Described end is provided with projection; The wall thickness of described expansion tube successively decreases from opening to end; Described nut is positioned at end and the outer circumference surface of expansion tube is connected with nut thread.

3. safety transfusion needle according to claim 1 and 2, is characterized in that: described conduit is provided with groove, and described groove and expansion tube agree with mutually, and groove surfaces and expansion tube inner surface fit tightly.

4. safety transfusion needle according to claim 3, is characterized in that: described conduit is made up of quality of rubber materials.