CN217744530U

CN217744530U - PICC pjncture needle

Info

Publication number: CN217744530U
Application number: CN202220246479.7U
Authority: CN
Inventors: 陈琳; 沈川林
Original assignee: Second Peoples Hospital of Yibin
Current assignee: Second Peoples Hospital of Yibin
Priority date: 2022-01-30
Filing date: 2022-01-30
Publication date: 2022-11-08
Anticipated expiration: 2032-01-30

Abstract

The utility model discloses a PICC pjncture needle relates to the nursing materials field. Provides a PICC puncture needle with the function of sucking to help blood return. The PICC puncture needle comprises a needle core and a cannula sheath, wherein the cannula sheath is arranged on the needle core, the PICC puncture needle also comprises an aspirator, the aspirator comprises a suction barrel, a piston rod and an operating button, the suction barrel is connected with the rear end of the needle core, the rear part of the suction barrel is provided with a long hole which is axially arranged along the suction barrel, the piston is positioned in the suction barrel and matched with the suction barrel, the piston is positioned in front of the long hole, the piston rod is connected with the piston, the operating button comprises an operating part and a connecting part, the operating part is attached to the suction barrel, and the connecting part penetrates through the long hole and is connected with the piston rod. When the PICC puncture needle is used for puncture, the aspirator is held by hands. In the process of puncture, the hand of puncture can vacate a finger and dial the operating button backward, and the operating button moves backward and drives piston rod and piston backward, and the aspirator realizes the suction promptly, helps the blood return, is convenient for judge whether puncture is successful.

Description

PICC pjncture needle

Technical Field

The utility model relates to a PICC puts a tub technical field, especially relates to a PICC pjncture needle.

Background

The PICC is a central venous catheter placed in a peripheral vein, the catheter is used for puncturing the vein of a peripheral arm, the catheter directly reaches the great vein close to the heart, the direct contact between chemotherapy drugs and the vein of the arm can be avoided, and in addition, the blood flow speed of the great vein is high, the thinning therapy drugs can be quickly flushed, and the stimulation of the drugs to the blood vessel is prevented.

PICC puts and manages and generally need to use articles for use such as PICC pjncture needle, PICC pipe, syringe that have the seal wire. Wherein the PICC needle typically includes a hub, a sheath, and a cap. When the catheter is placed, the PICC puncture needle is firstly punctured into a peripheral vein, and if blood returns, the puncture is successful; then the cannula sheath is pushed forwards to enable the cannula sheath to enter the blood vessel and exit the stylet; then the PICC catheter is placed into a peripheral vein through a cannula sheath and is inserted into a central vein; the cannula sheath and guidewire are then withdrawn and the PICC catheter is placed. After the PICC catheter is placed into the patient, the PICC catheter is connected with an external connector, then the PICC catheter is connected with the external connector through a syringe, and suction is performed to finally judge whether the PICC catheter is placed successfully.

In the PICC puncture needle puncture operation, the blood return of weak and hypotensive people is not obvious, so that whether the puncture is successful or not is difficult to judge. 201520371615.5 discloses a PICC puncture device, which is provided with a bypass pipeline for connecting a suction device, and helps blood return through suction so as to be beneficial to judging whether the puncture is successful or not, wherein the suction device generally is an injector. However, the PICC puncture needle cannot realize puncture and suction, the two hands are required to be stopped to operate the injector for suction after puncture, if blood return does not exist, the puncture is required to be performed again, and the operation is inconvenient. And the shape of the PICC puncture needle is greatly different from that of the conventional PICC puncture needle, and the PICC puncture needle does not conform to the conventional operation habit.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: provides a PICC puncture needle with the function of sucking to help blood return.

The technical scheme adopted for solving the problems is as follows: the PICC puncture needle comprises a needle core and a cannula sheath, wherein the cannula sheath is arranged on the needle core, the PICC puncture needle also comprises an aspirator, the aspirator comprises a suction barrel, a piston rod and an operating button, the suction barrel is connected with the rear end of the needle core, the rear part of the suction barrel is provided with a long hole which is axially arranged along the suction barrel, the piston is positioned in the suction barrel and matched with the suction barrel, the piston is positioned in front of the long hole, the piston rod is connected with the piston, the operating button comprises an operating part and a connecting part, the operating part is attached to the suction barrel, and the connecting part penetrates through the long hole and is connected with the piston rod.

Further, the method comprises the following steps: when the connecting part is jointed with the rear end of the long hole, the piston is positioned in front of the long hole.

Further, the method comprises the following steps: the PICC puncture needle comprises a needle cap, the shape of the rear end of the needle core is positive and changeable, the needle cap is sleeved on the rear ends of the cannula sheath and the needle core and matched with the rear end of the needle core, the suction cylinder is in threaded connection with the needle core, the front end of the suction cylinder is provided with an internal thread, and the internal thread is matched with an external connector of the PICC catheter.

The utility model has the advantages that: 1. when the PICC puncture needle is used for puncture, the aspirator is held by hands. In the process of puncture, the hand of puncture can vacate a finger and dial the operating button backward, and the operating button moves backward and drives piston rod and piston backward, and the aspirator realizes the suction promptly, helps the blood return, is convenient for judge whether puncture is successful. The utility model discloses single-handed operation can realize puncture and suction, can puncture limit suction, convenient operation.

2. Further optimal design, puncture withdraw from behind the nook closing member, the aspirator can be dismantled, then with the external connection of PICC pipe connect, can aspirate once more and judge that the PICC pipe is finally put into successfully. Thus, a special syringe for suction can be omitted, the cost is saved, and medical waste is reduced.

Drawings

FIG. 1 is a drawing of a PICC needle configuration;

FIG. 2 is an exploded view of the components of the PICC needle;

FIG. 3 isbase:Sub>A cross-sectional view A-A of FIG. 2;

FIG. 4 is a view of a PICC catheter implantation completion;

labeled as: the catheter sheath 1, the stylet 2, the aspirator 3, the suction cylinder 31, the internal thread 311, the long hole 312, the piston 32, the piston rod 33, the operation button 34, the operation portion 341, the connection portion 342, the needle cap 4, the PICC catheter 5, and the external joint 51.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 1 to 3, the PICC puncture needle includes a needle core 2 and a cannula sheath 1, the cannula sheath 1 is sleeved on the needle core 2, and further includes an aspirator 3, the aspirator 3 includes a suction tube 31, a piston 32, a piston rod 33 and an operation button 34, the suction tube 31 is connected with the rear end of the needle core 2, the rear portion of the suction tube 31 has a long hole 312 arranged along the axial direction of the suction tube 31, the piston 32 is located in the suction tube 31 and is matched with the suction tube 31, the piston 32 is located in front of the long hole 312, the piston rod 33 is connected with the piston 32, the operation button 34 includes an operation portion 341 and a connection portion 342, the operation portion 341 is jointed with the suction tube 31, and the connection portion 342 passes through the long hole 312 and is connected with the piston rod 33.

When the PICC puncture needle is punctured, the aspirator 3 is held by hand. In the puncture process, the punctured hand can leave one finger to poke the operating button 34, the operating button 34 moves backwards to drive the piston rod 33 and the piston 32 to move backwards, the aspirator 3 realizes aspiration, blood return is assisted, and whether puncture is successful or not is convenient to judge. The utility model discloses an aspirator 3 is different from conventional syringe, and the one hand can operate the real suction, can puncture while suction convenient operation.

The piston 32 of the suction unit 3 should not move into the elongated hole 312, otherwise the suction unit 3 leaks. For this reason, it is preferable that the piston 32 is located in front of the long hole 312 when the connecting portion 342 abuts the rear end of the long hole 312. This limits the stroke of the operating knob 34 and prevents the piston 32 from moving into the elongated hole 312.

As discussed in the background, and as shown in FIG. 4, after the PICC catheter 5 is inserted, the external connector 51 is attached to the PIC catheter 5, and a syringe is then required to connect the external connector 51 to aspirate and ultimately determine whether the PIC catheter 5 was successfully inserted. In order to save cost and reduce medical waste, the utility model can be further improved, and an aspirator 3 is adopted to replace an injector. The method comprises the following specific steps: the PICC puncture needle comprises a needle cap 4, the rear end of the needle core 2 is in a shape of being just deformed, the needle cap 4 is sleeved on the rear ends of the cannula sheath 1 and the needle core 2 and is matched with the rear end of the needle core 2, the suction cylinder 31 is in threaded connection with the needle core 2, the front end of the suction cylinder 31 is provided with an internal thread 311, and the internal thread 311 is matched with an external connector 51 of the PICC catheter 5.

When puncturing, the needle cap 4 is taken down and put aside, then puncturing is carried out, then after the needle core 2 is withdrawn, the needle core 2 is inserted into the needle cap 4, and then the needle cap 4 is sleeved back. Then the needle cap 4 is held by hand to rotate, and the shape of the rear end of the needle core 2 is positive and changeable, so that the needle cap 4 is matched with the rear end of the needle core 2, and the needle cap 4 rotates to drive the needle core 2 to rotate, namely the pillow inner 2 is detached. Since the front end of the suction tube 31 is provided with the internal thread 311, the internal thread 311 is matched with the external connection connector 51 of the PICC catheter 5, the suction tube 31 can be connected with the external connection connector 51, and the final suction verification is performed. Thus, a special injector for suction can be omitted, the cost is saved, and the medical waste is reduced.

Claims

PICC pjncture needle, including nook closing member (2) and intubate sheath (1), intubate sheath (1) cover is on nook closing member (2), its characterized in that: including aspirator (3), aspirator (3) are including sucking a section of thick bamboo (31), piston (32), piston rod (33) and operating button (34), it is connected with nook closing member (2) rear end to suck a section of thick bamboo (31), the rear portion of sucking a section of thick bamboo (31) has slot (312) along sucking a section of thick bamboo (31) axial setting, piston (32) are located and suck a section of thick bamboo (31) and cooperate with sucking a section of thick bamboo (31), piston (32) are located the place ahead of slot (312), piston rod (33) are connected in piston (32), operating button (34) include operating portion (341) and connecting portion (342), operating portion (341) and suction tube (31) laminating, connecting portion (342) pass slot (312) and are connected with piston rod (33).
2. The PICC needle of claim 1, wherein: when the connecting portion (342) is engaged with the rear end of the long hole (312), the piston (32) is positioned in front of the long hole (312).
3. A PICC needle as claimed in either of claims 1 or 2, wherein: including needle cap (4), the shape of nook closing member (2) rear end is just out of shape many, and needle cap (4) cover is on intubate sheath (1) and nook closing member (2) rear end and with nook closing member (2) rear end cooperation, suction section of thick bamboo (31) and nook closing member (2) threaded connection, the front end of suction section of thick bamboo (31) is provided with internal thread (311), external joint (51) matching of internal thread (311) and PICC pipe (5).