CN211187459U - Radial artery puncture needle with negative pressure - Google Patents

Abstract

The utility model discloses a radial artery puncture needle with negative pressure, which comprises a puncture trocar and a negative pressure device, wherein the puncture trocar is detachably inserted on the negative pressure device, the negative pressure device comprises a sleeve, a threaded rod and an on-off valve, the front end of the sleeve is fixedly connected with a joint, the joint is inserted on the puncture trocar, the on-off valve is fixedly arranged on the joint, an internal thread is arranged in the sleeve, the threaded rod is arranged in the sleeve through a thread, and the rear end of the threaded rod is fixedly connected with a cylindrical handle; the switch valve is provided with a channel communicated with the connector, a containing cavity is further formed in the switch valve, a button is installed in the containing cavity, the negative pressure device is connected during radial artery puncture, the switch valve is in an off state when not operated, a backward rotating threaded rod can enable negative pressure to be formed in the sleeve, the switch valve is connected to the puncture trocar, the button is pressed to enable the puncture trocar to receive negative pressure, puncture blood return can be promoted, and puncture success rate is increased.

Description

Radial artery puncture needle with negative pressure

Technical Field

The utility model relates to the technical field of medical equipment, specifically belong to a radial artery pjncture needle of taking negative pressure.

Background

At present, radial artery puncture is mostly adopted in coronary intervention operations, the puncture method is transmural puncture, then a trocar is withdrawn to send a guide wire, radial artery spasm is frequently encountered in clinical practical operation, and blood return is avoided or slowed during puncture, so that the puncture is unsuccessful.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model discloses a take radial artery pjncture needle of negative pressure, this utility model have the negative pressure suction when the radial artery puncture, increase the blood return effect, prevent not having the blood return or the slow condition of blood return, increase the puncture success rate.

In order to achieve the technical purpose, the above technical effects are achieved, and the utility model discloses a realize through following technical scheme:

the utility model provides a take radial artery pjncture needle of negative pressure, includes puncture trocar and negative pressure device, its characterized in that:

the puncture trocar is detachably inserted on the negative pressure device, the negative pressure device comprises a sleeve, a threaded rod and an on-off valve, the front end of the sleeve is fixedly connected with a joint, the joint is inserted on the puncture trocar, the on-off valve is fixedly arranged on the joint, internal threads are arranged in the sleeve, the threaded rod is arranged in the sleeve through threads, and the rear end of the threaded rod is fixedly connected with a cylindrical handle;

the switch valve is provided with a channel communicated with the interior of the joint, a containing cavity is further formed in the switch valve, a button is installed in the containing cavity, the button stretches out of the surface of the switch valve from the upper side, a limiting step is arranged on the side face of the switch valve and clamped in the containing cavity, a blocking rod is fixedly connected to the lower end of the button, a spring is sleeved on the blocking rod and located in the containing cavity, a mounting hole is formed in the switch valve and is communicated with the containing cavity perpendicularly to the channel, the blocking rod is installed in the mounting hole to block the channel, and a through hole is formed in the upper portion of the side.

Further, the blocking rod diameter is larger than the channel diameter.

The utility model has the advantages that: the utility model discloses a when the radial artery puncture, connect negative pressure device, when the break-make valve is not operated, be in the off-state, backward rotatory threaded rod can make and form the negative pressure in the sleeve, connects the back on the puncture trocar, presses the button and makes and receive the negative pressure in the puncture trocar, can promote the emergence of puncture blood return, increases the puncture success rate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic view of the internal structure of the on-off valve.

In the drawings, the names of the components represented by the respective reference numerals are listed as follows:

1-puncture trocar, 2-joint, 3-on-off valve, 4-sleeve, 5-threaded rod, 6-handle, 7-button, 8-limit step, 9-containing cavity, 10-blocking rod, 11-mounting hole, 12-channel, 13-through hole and 14-spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, a radial artery puncture needle with negative pressure comprises a puncture trocar 1 and a negative pressure device, and is characterized in that:

the puncture trocar 1 is detachably inserted on the negative pressure device, the negative pressure device comprises a sleeve 4, a threaded rod 5 and an on-off valve 3, the front end of the sleeve 4 is fixedly connected with a joint 2, the joint 2 is inserted on the puncture trocar 1, the on-off valve 3 is fixedly arranged on the joint 2, internal threads are arranged in the sleeve 4, the threaded rod 5 is installed in the sleeve 4 through threads, and the rear end of the threaded rod 5 is fixedly connected with a cylindrical handle 6;

it communicates with the interior of 2 to have seted up passageway 12 and joint in the on-off valve 3, has still seted up in the on-off valve 3 and has held chamber 9, holds and installs button 7 in the chamber 9, and button 7 stretches out in on-off valve 3 surface from the top, and the side is provided with spacing step 8 card and holds in chamber 9, and button 7 lower extreme fixedly connected with blocks pole 10, block the cover on pole 10 and be equipped with spring 14, and spring 14 is located and holds chamber 9, it intersects and holds chamber 9 intercommunication perpendicularly with passageway 12 to have seted up mounting hole 11 in the on-off valve 3, block pole 10 and install separation passageway 12 in mounting hole 11, block pole 10 lateral wall upper portion and seted up through-hole 13.

Further, the blocking rod 10 has a diameter greater than the diameter of the channel 12.

The utility model discloses a theory of use does: when the radial artery puncture is carried out, the trocar is punctured into the radial artery, if blood does not return in the trocar, the negative pressure device can be inserted into the puncture trocar 1, the negative pressure device can build negative pressure in advance, the volume in the sleeve 4 is increased through rotating the threaded rod 5 to form negative pressure, the negative pressure device is connected to the trocar, the button 7 is pressed to enable the blocking rod 10 to move, the through hole 13 in the blocking rod 10 is communicated with the channel 12 after moving, the puncture trocar 1 is communicated with the sleeve, negative pressure is formed in the needle, the blood return is promoted, the puncture success rate is improved, the button 7 is released, the blocking rod 10 is moved upwards under the action of the spring 14, the through hole 13 is staggered with the channel 12, the on-off valve 3 is closed, and the on-off valve 3 is simple to operate and good in use effect.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching.

Claims (2)

1. The utility model provides a take radial artery pjncture needle of negative pressure, includes puncture trocar and negative pressure device, its characterized in that:

the puncture trocar is detachably inserted on the negative pressure device, the negative pressure device comprises a sleeve, a threaded rod and an on-off valve, the front end of the sleeve is fixedly connected with a joint, the joint is inserted on the puncture trocar, the on-off valve is fixedly arranged on the joint, internal threads are arranged in the sleeve, the threaded rod is arranged in the sleeve through threads, and the rear end of the threaded rod is fixedly connected with a cylindrical handle;

the switch valve is provided with a channel communicated with the interior of the joint, a containing cavity is further formed in the switch valve, a button is installed in the containing cavity, the button stretches out of the surface of the switch valve from the upper side, a limiting step is arranged on the side face of the switch valve and clamped in the containing cavity, a blocking rod is fixedly connected to the lower end of the button, a spring is sleeved on the blocking rod and located in the containing cavity, a mounting hole is formed in the switch valve and is communicated with the containing cavity perpendicularly to the channel, the blocking rod is installed in the mounting hole to block the channel, and a through hole is formed in the upper portion of the side.

2. The radial artery puncture needle with negative pressure of claim 1, wherein: the blocking rod diameter is greater than the channel diameter.

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