CN208065253U - The puncture aid of venous cannulation is used in vascular access operation - Google Patents

Abstract

The utility model provides the puncture aid that venous cannulation is used in vascular access operation, belongs to venous cannula field.Including injection tube, injection tube lower end is communicated with interconnecting piece；Piston component, piston component includes piston block, piston rod and piston bush, piston bush is set on the bottom surface and outer wall of piston block, the lower end of piston rod and the upper surface of piston block are integrated, the outer wall of piston bush fits on the inner wall of injection tube, intake is offered on piston rod, the upper end end of piston rod is run through in the upper end of intake, and the lower end of intake extends on piston block and piston bush and runs through piston bush；Puncture needle component, puncture needle component include needle body and the needle stand in dome-shaped, and needle stand is detachably connected on interconnecting piece, and one end of needle body is connected on needle stand.This assistor advantageously reduces operation error for the puncture aid of venous cannulation in vascular access operation and causes site of puncture tissue injury, and seal wire introducing can be realized without carrying out puncture needle separation.

Description

The puncture aid of venous cannulation is used in vascular access operation

Technical field

The utility model belongs to venous cannula field, is related to the puncture in vascular access operation for venous cannulation and assists Device.

Background technology

Venous cannulation is suitable for measurement of central venous pressure, hemodynamic monitoring, interim and permanent pacing, vein Gao Ying Foster, electrophysiologic study etc..The mode and type of venous cannulation have it is a variety of, need to take difference according to different intubation positions Intubation angle and mode, but following mechanism step is common on the whole, and patient first makes even sleeping head layback position, with stretching, extension Neck reduces air embolism.Fat, muscular or shorter neck patient can place a throw pillow to stretch under its shoulder Neck.Patient's head, which turns to, punctures vein offside, secondly to determine that site of puncture marks and carry out disinfection anesthesia, with that It is selection puncture path, is punctured sequentially through positioning in puncture path, introduced seal wire, introducing sheath and extraction and lead These steps of silk, when being punctured after positioning, in puncturing and being introduced into seal wire the two steps, current mode and utensil There are some problems, when introducing seal wire after piercing, puncture needle is needed to be detached with syringe, by seal wire from puncture needle after separation Penetrated at needle stand, since the hand of medical staff needs to help position syringe and puncture injector simultaneously, puncture needle with It needs to carry out rotation process in the separation process of syringe, often because puncture injector unitary rotation occurs for misoperation, lead Site of puncture tissue is caused to be damaged, therefore a kind of puncture needle of design and syringe can realize that seal wire introduces without carrying out separation Syringe be necessary.

Invention content

The purpose of this utility model is to be directed to the above-mentioned problems in the prior art, provides and is used in vascular access operation Puncture aid for venous cannulation in the puncture aid of venous cannulation, vascular access operation advantageously reduces Operation error and cause site of puncture tissue injury, without carry out puncture needle separation can be realized seal wire introduce, solve at present The problems such as seal wire introducing can just be carried out by needing progress syringe to be detached with puncture needle after puncture.

The purpose of this utility model can be realized by following technical proposal：It is used for venous cannulation in vascular access operation Puncture aid, which is characterized in that the puncture aid includes：

Injection tube, the injection tube is cylindrical and upper end is opening, and what the injection tube lower end was communicated with protrusion is in circle The interconnecting piece of tubular；

Piston component, the piston component include piston block, piston rod and piston bush, and the piston block is in round block shape, institute State that piston rod is cylinder, the piston bush is set on the bottom surface and outer wall of the piston block, the lower end of the piston rod with The upper surface of the piston block is integrated, and the outer wall of the piston bush fits on the inner wall of the injection tube, the piston rod On offer intake, for the intake along the piston rod to opening up, the piston rod is run through in the upper end of the intake Upper end end, the lower end of the intake extends on the piston block and piston bush and runs through the piston bush；

Puncture needle component, the puncture needle component include needle body and the needle stand in dome-shaped, and the needle stand is detachably connected On the interconnecting piece, one end of the needle body is connected on the needle stand.

For in the puncture aid of venous cannulation in above-mentioned vascular access operation, the intake it is rounded and with The piston rod coaxial arrangement.

It is used in the puncture aid of venous cannulation in above-mentioned vascular access operation, the interconnecting piece, intake, work Stopper rod and piston block are coaxially disposed.

It is used in the puncture aid of venous cannulation in above-mentioned vascular access operation, one on the bottom surface of the piston block It is body formed to there is guide part cylindrical in shape, the upper end of the guide part to be integrated with the piston block, when the bottom surface of the piston bush When being fitted in the injection tube inner bottom wall, the lower face of the guide part is fitted in the needle stand inner bottom wall.

For in the puncture aid of venous cannulation, the guide part to be in from top to bottom in above-mentioned vascular access operation Necking shape, and necking end internal diameter is identical as the needle body internal diameter, the guide part is coaxially disposed with needle body.

For in the puncture aid of venous cannulation, the outer wall of the interconnecting piece to have in above-mentioned vascular access operation The inner wall of external screw thread, the needle stand has internal thread.

It is used in the puncture aid of venous cannulation in above-mentioned vascular access operation, the upper end end of the piston rod Integrally formed with the pulling block of holding in round block shape, pulling block is held in the upper end of the intake through described.

It is used in the puncture aid of venous cannulation in above-mentioned vascular access operation, the upper end face paste for holding pulling block There is one layer of nylon film.

For in the puncture aid of venous cannulation, the piston bush to be silica gel sheath in above-mentioned vascular access operation.

For in the puncture aid of venous cannulation, the length of the injection tube to be little in above-mentioned vascular access operation In 5cm.

The prior art is compared, and the puncture aid in the operation of this vascular access for venous cannulation has the following advantages：

1, operation error is advantageously reduced for the puncture aid of venous cannulation and cause in the operation of this vascular access Seal wire introducing can be realized without carrying out puncture needle separation in site of puncture tissue injury.

2, the puncture aid smart structural design of venous cannulation is used in the operation of this vascular access, certainly by syringe Seal wire introducing can be realized in body.

Description of the drawings

Fig. 1 is the structural schematic diagram of the puncture aid for venous cannulation in the operation of this vascular access.

Fig. 2 is the schematic enlarged-scale view in the regions A-A in Fig. 1.

Fig. 3 is the schematic enlarged-scale view in the regions B-B in Fig. 1.

In figure, 1, injection tube；1a, interconnecting piece；2, piston block；2a, guide part；3, piston rod；3a, intake；3b, drawing is held Block；4, piston bush；5, needle body；6, needle stand.

Specific implementation mode

As shown in Figure 1 to Figure 3, the puncture aid in the operation of this vascular access for venous cannulation includes injection tube 1, Injection tube 1 is cylindrical and upper end is opening, and 1 lower end of injection tube is communicated with the cylindrical circular interconnecting piece 1a of protrusion；Piston group Part, piston component include piston block 2, piston rod 3 and piston bush 4, and piston block 2 is in round block shape, and piston rod 3 is cylinder, piston Set 4 is set on the bottom surface and outer wall of piston block 2, and the lower end and the upper surface of piston block 2 of piston rod 3 are integrated, piston bush 4 Outer wall fits on the inner wall of injection tube 1, and intake 3a is offered on piston rod 3, and intake 3a is axially opened up along piston rod 3, The upper end end of piston rod 3 is run through in the upper end of intake 3a, the lower end of intake 3a extend on piston block 2 and piston bush 4 and Through piston bush 4；Puncture needle component, puncture needle component include needle body 5 and the needle stand 6 in dome-shaped, and needle stand 6 is detachably connected on On interconnecting piece 1a, one end of needle body 5 is connected on needle stand 6.This assistor is specific as follows：After positioning successfully, by needle body 5 along positioning Direction inserting needle under continuous negative pressure suction（Persistently pull piston rod 3）, until being drawn into unobstructed vein blood back, need herein To illustrate that in lasting pulling piston rod 3, the upper end by intake 3a is needed to be covered by finger（Generally by big thumb Refer to）, air inlet herein is prevented, blood back is otherwise cannot achieve, concrete operations are in 5 piercing process of needle body, and one hand helps positioning to use Syringe and this assistor injection tube 1, then the thumb of another hand cover the upper end of intake 3a, then continue slowly Will draw outside piston rod 3.After blood back, one end of the seal wire of selected shape is inserted by the upper ends intake 3a rapidly, is led Silk, which is entered by intake 3a in needle body 5, to be finally pierced by from needle body 5, continues to penetrate until region of interest, seal wire are penetrated to specified Behind position, the seal wire that skin wears oral area position is pressed with finger, this assistor is pulled out together, you can carries out subsequent installation sheath Operation.This assistant structure is ingenious in design, without realizing that the introducing behaviour of seal wire can be realized in the separation of injection tube 1 and needle body 5 Make, easy to operate, serious forgiveness is high.

Intake 3a is rounded and is coaxially disposed with piston rod 3.Interconnecting piece 1a, intake 3a, piston rod 3 and piston block 2 It is coaxially disposed.The smooth introducing of seal wire is convenient in a variety of coaxial arrangements.It is led integrally formed with cylindrical in shape on the bottom surface of piston block 2 To portion 2a, upper end and the piston block 2 of guide part 2a are integrated, when the bottom surface of piston bush 4 is fitted in 1 inner bottom wall of injection tube, The lower face of guide part 2a is fitted in 6 inner bottom wall of needle stand.Guide part 2a is that seal wire bends in order to prevent, enables seal wire It can smoothly enter into needle body 5.Guide part 2a is in from top to bottom necking shape, and necking end internal diameter is identical as 5 internal diameter of needle body, guide part 2a It is coaxially disposed with needle body 5.The internal diameter of needle body 5 is slightly larger than seal wire outer diameter, more 0.5mm-1mm.The throat structure of guide part 2a is into one Step is that seal wire plays guiding role.There is the outer wall of interconnecting piece 1a external screw thread, the inner wall of needle stand 6 to have internal thread.Piston rod 3 Pulling block 3b is held in upper end end integrally formed in round block shape, and the upper end of intake 3a, which is run through, holds pulling block 3b.Drawing is held by operation Block 3b realizes the pull-out to piston rod 3.Post one layer of nylon film in the upper surface for holding pulling block 3b.Each assistor is before being not used The nylon film is all had, nylon film can not be torn temporarily during blood back forms negative pressure, when penetrating seal wire again by Buddhist nun Imperial film is torn.Piston bush 4 is silica gel sheath.The length of injection tube 1 is not more than 5cm.The existing syringe bodily form is big, in addition to puncturing Needle and internal piston structure play a role intubation, and the piston cylinder length of blood back only need several centimetres just it is much of that therefore long Length be operation bring burden, 1 length of this injection tube is short, easy to operate, reduce hand holding bears.

Unmentioned detailed structure in present specification, specific part dimension and principle be conventionally known common sense or What those skilled in the art can be derived that by simple selection, it does not repeat.

The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Claims (10)

1. being used for the puncture aid of venous cannulation in vascular access operation, which is characterized in that the puncture aid includes：

Injection tube, the injection tube is cylindrical and upper end is opening, and the injection tube lower end is communicated with the cylindrical of protrusion Interconnecting piece；

Piston component, the piston component include piston block, piston rod and piston bush, and the piston block is in round block shape, the work Stopper rod is cylinder, and the piston bush is set on the bottom surface and outer wall of the piston block, the lower end of the piston rod with it is described The upper surface of piston block is integrated, and the outer wall of the piston bush fits on the inner wall of the injection tube, is opened on the piston rod Equipped with intake, the intake is along the piston rod to opening up, and the upper end of the intake is through the upper of the piston rod End, the lower end of the intake is held to extend on the piston block and piston bush and run through the piston bush；

Puncture needle component, the puncture needle component include needle body and the needle stand in dome-shaped, and the needle stand is detachably connected on institute It states on interconnecting piece, one end of the needle body is connected on the needle stand.

2. being used for the puncture aid of venous cannulation in vascular access operation according to claim 1, which is characterized in that The intake is rounded and is coaxially disposed with the piston rod.

3. being used for the puncture aid of venous cannulation in vascular access operation according to claim 1, which is characterized in that The interconnecting piece, intake, piston rod and piston block are coaxially disposed.

4. being used for the puncture aid of venous cannulation in vascular access operation according to claim 1, which is characterized in that Integrally formed with guide part cylindrical in shape on the bottom surface of the piston block, the upper end of the guide part and the piston block are one Body, when the bottom surface of the piston bush is fitted in the injection tube inner bottom wall, the lower face of the guide part is fitted in described In needle stand inner bottom wall.

5. being used for the puncture aid of venous cannulation in vascular access operation according to claim 4, which is characterized in that The guide part is in from top to bottom necking shape, and necking end internal diameter is identical as the needle body internal diameter, and the guide part and needle body are same Axis is arranged.

6. being used for the puncture aid of venous cannulation in vascular access operation according to claim 1, which is characterized in that There is the outer wall of the interconnecting piece external screw thread, the inner wall of the needle stand to have internal thread.

7. being used for the puncture aid of venous cannulation in vascular access operation according to claim 1, which is characterized in that Drawing is held through described in the upper end end of the piston rod integrally formed with the pulling block of holding in round block shape, the upper end of the intake Block.

8. being used for the puncture aid of venous cannulation in vascular access operation according to claim 7, which is characterized in that Post one layer of nylon film in the upper surface for holding pulling block.

9. being used for the puncture aid of venous cannulation in vascular access operation according to claim 1, which is characterized in that The piston bush is silica gel sheath.

10. being used for the puncture aid of venous cannulation in vascular access operation according to claim 1, feature exists In the length of the injection tube is not more than 5cm.