CN210056182U - Special puncture device for femoral artery with tortuous vascular path - Google Patents

Abstract

The utility model discloses a special piercing depth of femoral artery for blood vessel route is tortuous, it contains: a puncture needle head; the puncture needle head is longer than the needle sheath, and when the needle sheath is sleeved outside the puncture needle head, the needle head end is exposed; a contrast media injection assembly, comprising: the syringe, the extension hose, the needle sheath connector and the needle core; the head end of the elbow guide wire is arc-shaped; and, vascular sheaths. The utility model discloses a safe radiography injection subassembly and elbow seal wire structure of design, the special piercing depth structure that provides is simple and convenient, the operation of being convenient for, and the specially adapted is because vascular sclerosis, serious tortuosity or because the operation causes the femoral artery puncture operation of blood vessel variation.

Description

Special puncture device for femoral artery with tortuous vascular path

Technical Field

The utility model belongs to the field of medical equipment, a piercing depth is related to, concretely relates to special piercing depth of femoral artery who is used for the tortuous vascular route.

Background

In the endovascular intervention of cerebrovascular diseases, a transfemoral (femoral puncture) approach is a routine choice. After the femoral artery puncture is successful, the head end of the guide wire needs to reach the junction of the iliac artery and the abdominal aorta from the femoral artery through the external iliac artery, the guide wire is confirmed to be in the true lumen of the blood vessel, and then the blood vessel sheath can be safely placed into the femoral artery along the guide wire. However, in practice, patients' blood vessels develop arteriosclerosis, plaque formation, severe tortuosity, dissection due to aging, or blood vessel variation due to congenital factors or surgery and trauma. Due to the structure of the existing puncture needle, most doctors have the following troubles in the process of operation: after the femoral artery puncture is successful, the guide wire is difficult to walk in the blood vessel, sometimes the guide wire easily enters a branch blood vessel, sometimes the guide wire meets the plaque part, the tortuous fracture part or enters the interlayer part of the blood vessel, and the guide wire cannot reach the target part. If the guide wire is pushed over the blood vessel, the blood vessel can be damaged, the interlayer can be damaged or aggravated, and the blood vessel can be broken seriously, thereby causing disastrous results.

In clinical work, under the guidance of DAS (Digital Subtraction Angiography), contrast agent is injected through a puncture needle, a path diagram is made in advance, a complex vascular structure is displayed, and a guide wire can be guided to go upwards in a blood vessel in a targeted manner.

However, the tail end of the puncture needle sheath (soft texture) is directly connected with an injector to inject contrast medium, so that impact force or pressure is easily formed instantaneously, the head end of the needle sheath can slide and move out of the blood vessel, and the needle sheath needs to be punctured again, and multiple punctures can cause local hematoma and blood vessel damage to cause more difficulty in puncturing, and the pain of a patient is increased.

The femoral artery antegrade puncture needle disclosed in Chinese patent CN200910097132.X comprises an integral cylindrical needle body and a needle handle, wherein a partition wall is arranged in an inner cavity channel, and the partition wall axially divides the channel into a left channel and a right channel which are mutually independent; the port of the left channel is an obliquely arranged left radiography channel outlet, and a left radiography channel is arranged at the needle handle part of the left channel; the port of the right channel is a right contrast channel outlet, the right contrast channel outlet and the left contrast channel outlet are arranged in a back direction, and a right contrast channel is arranged at the needle handle part of the right channel; one-way hemostatic valves are respectively arranged on the left channel and the right channel, and heparin caps are respectively arranged on the ports of the left radiography channel and the right radiography channel. The antegrade puncture needle is used for interventional therapy, after the puncture needle is punctured into femoral artery, the shape of blood vessel can be seen clearly through a path diagram, but the problem that the guide wire can follow smoothly after the puncture is successful can not be solved well.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a puncture device of femoral artery puncture operation of being exclusively used in because sclerosis of blood vessel, serious tortuosity or because the operation causes the blood vessel variation, the structure is simple and convenient, convenient operation, the operation risk is little.

In order to achieve the above object, the present invention provides a special puncture device for femoral artery having a tortuous vascular pathway, the puncture device comprising:

a puncture needle head;

the puncture needle head is longer than the needle sheath, and when the needle sheath is sleeved outside the puncture needle head, the needle head end is exposed;

a contrast media injection assembly, comprising: the syringe, the extension hose, the needle sheath connector and the needle core;

the head end of the elbow guide wire is arc-shaped; and

a vascular sheath.

Preferably, the contrast media injector assembly further comprises: and two ends of the control valve are respectively connected with the injector and the extension hose.

Preferably, the length of the extension hose is 15-25 cm.

Preferably, the syringe has a volume of 5-10 ml.

Preferably, the needle sheath connector is matched with the tail end of the needle sheath, and the length of the needle sheath connector is 1-2 cm.

Preferably, the tail end of the stylet is fixedly arranged in the needle sheath connector, and the head end of the stylet is embedded in the needle sheath.

Preferably, the head end of the stylet is a flat head.

Preferably, the head end of the guide wire is a soft guide wire, and the hand-held end of the guide wire is a hard guide wire.

Preferably, the soft guide wire is 5-10cm long, and the hard guide wire is 25-40cm long.

Preferably, the head end of the elbow guide wire is an arc elbow, and the bending degree is less than 45 degrees, and the bending degree refers to the angle between the tangent line of the elbow and the extension line of the guide wire.

The utility model provides a special piercing depth designs safe radiography injection subassembly and elbow seal wire structure, avoids forming injection pressure or impact force through the extension hose, prevents the blood return through the control valve, through the special construction of soft elbow seal wire, smoothly through the blood vessel of tortuosity, sclerosis or variation, arrives the destination to put into the vascular sheath safely, carry out follow-up operation fast. The special puncture device has simple structure, low cost, convenient operation and safe operation, and is particularly suitable for femoral artery puncture operations caused by angiosclerosis, serious tortuosity or blood vessel mutation caused by congenital or operations.

Drawings

Fig. 1 is a schematic structural view of a femoral artery puncture device for tortuous vascular path according to the present invention.

Fig. 2 is a schematic structural view of an elbow guide wire of a femoral artery puncture device for vascular path tortuosity according to the present invention.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

As shown in fig. 1, an example of the structure of a femoral artery puncture device for tortuous vascular path according to the present invention includes:

a puncture needle (conventional puncture needle, not shown in the drawings);

a needle sheath 20, the puncture needle head is longer than the needle sheath 20, when the needle sheath 20 is sleeved outside the puncture needle head, the needle head end is exposed and is used for puncturing blood vessels;

a contrast media injection assembly, comprising: a syringe 31, an extension hose 32, a needle sheath connector 33 and a needle core 34;

an elbow guide wire 40, the head end 41 of which is positioned at the end part of the soft guide wire section and is arc-shaped; and

vascular sheath (conventional vascular sheath, not shown).

In a preferred embodiment, the contrast media injector assembly further comprises: the control valve 35 has both ends connected to the syringe 31 and the extension hose 32, respectively.

The syringe 31 has a volume of 5-10 ml.

The length of the extension hose 32 is 15-25 cm.

The needle sheath connector 33 is matched with the tail end of the needle sheath 20 (when in use, the needle sheath connector 33 is sleeved in the tail end of the needle sheath 20), and the length of the needle sheath connector 33 is 1-2 cm.

The tail end of the needle core 34 is fixedly arranged in the needle sheath connector 33, when in use, the needle sheath connector 33 is connected with the tail end of the needle sheath 20, and the head end of the needle core 34 is positioned in the needle sheath 20.

In a preferred embodiment, the tip of the stylet 34 is flat for safety.

In a preferred embodiment, the elbow guide wire 40 is composed of two sections of guide wires made of different materials, that is, a soft guide wire section and a hard guide wire section which are connected. Wherein, the soft guide wire section can walk in the blood vessel to avoid injuring the blood vessel, and the hard guide wire section is used as a handheld end and is used for controlling the advancing route of the head end 41 of the elbow guide wire in the blood vessel. The soft guide wire section is 5-10cm long, and the hard guide wire section is 25-40cm long.

In a preferred embodiment, the head end of the elbow guide wire 40 is an arc elbow, and the bending degree is less than 45 degrees, wherein the bending degree refers to an angle between a tangent line of the arc elbow and an extension line of the elbow guide wire. More preferably, the camber is 5-30 °.

Comparative example

The conventional puncture surgery steps are as follows:

step 1, sleeving a puncture needle head in a needle sheath, wherein the end of the needle head is slightly exposed out of the head end of the needle sheath and is penetrated into a blood vessel of a patient;

step 2, pulling out the puncture needle, observing the blood spraying state as normal blood spraying, penetrating the conventional guide wire through the needle sheath 20 to wander to a target part in the blood vessel, and fixing the guide wire to be immobile;

step 3, pulling out the needle sheath 20, sleeving the blood vessel sheath outside the conventional guide wire from the handheld end of the guide wire, and placing the blood vessel sheath into a target part in the blood vessel along the guide wire;

and 4, pulling out the vascular sheath core and the guide wire, and performing subsequent operation through the vascular sheath.

Examples

The steps of the femoral artery puncture surgery for vascular variation due to angiosclerosis, severe tortuosity or congenital or due to operation and trauma are as follows:

step 1, sleeving a puncture needle head in a needle sheath, wherein the end of the needle head is slightly exposed out of the head end of the needle sheath and is penetrated into a blood vessel of a patient;

step 2, pulling out the puncture needle, observing the blood ejection state as abnormal blood ejection or difficult subsequent conventional guide wire placement although normal blood ejection, pulling out the guide wire, and injecting a contrast agent: the tail end of the needle sheath 20 is connected with the contrast agent injection assembly of the utility model, the needle core 34 is inserted into the tail end of the needle sheath 20, the tail end of the needle sheath 20 and the needle sheath connector 33 are connected and fixed, bleeding is controlled by the control valve 35, and the injection of the contrast agent is controlled;

step 3, with the injection of the contrast agent, the path of the blood vessel can be visualized through the DAS, and the contrast agent injection assembly is removed;

and 4, enabling the elbow guide wire 40 to penetrate through the needle sheath 20 and enter the blood vessel: by manipulating the second segment 42 (hand-held end) of the elbow guide wire 40, the first segment (elbow) of the elbow guide wire 40 is controlled to travel along the vascular path displayed by the DAS in the blood vessel until reaching the target site, and the elbow guide wire 40 is fixed.

Step 5, pulling out the needle sheath, sleeving the blood vessel sheath outside the elbow guide wire 40 from the handheld end of the elbow guide wire 40, and placing the blood vessel sheath into a target part in the blood vessel along the elbow guide wire 40;

and 6, pulling out the vascular sheath core and the elbow guide wire 40, and performing subsequent operation through the vascular sheath.

The utility model relates to a connect the extension hose of radiography syringe and needle sheath connector can be pushed the contrast medium by the assistant at the tail end, later do the road map under DSA guide, has had this road map, and the blood vessel is walked the shape and is surveyable. The elbow guide wire can conveniently run in the blood vessel (the head end and the full length of the elbow guide wire are developed below the DSA), an operator can adjust the direction of the elbow guide wire in real time according to the anatomical structure of the blood vessel, the head end of the elbow guide wire can be smoothly conveyed to the abdominal aorta, then the elbow guide wire is fixed in the blood vessel, the needle sheath is removed, and then the blood vessel sheath is safely placed in the femoral artery along the elbow guide wire.

To sum up, the utility model provides a special piercing depth of femoral artery for circuitous of vascular route, the structure is simple and convenient, through safe radiography injection apparatus of design, elbow seal wire, is particularly useful for because vascular sclerosis, serious circuitous or because the congenital or because the operation causes the femoral artery puncture operation of vascular variation.

While the present invention has been described in detail with reference to the preferred embodiments thereof, it should be understood that the above description should not be taken as limiting the present invention. Numerous modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be limited only by the attached claims.

Claims (10)

1. A femoral artery-specific puncture device for tortuous vascular pathways, the puncture device comprising:

a puncture needle head;

the puncture needle head is longer than the needle sheath, and when the needle sheath is sleeved outside the puncture needle head, the needle head end is exposed;

a contrast media injection assembly, comprising: the syringe, the extension hose, the needle sheath connector and the needle core;

the head end of the elbow guide wire is arc-shaped; and

a vascular sheath.

2. The femoral artery specific puncture device for tortuous vascular paths of claim 1, wherein the contrast media injection assembly further comprises: and two ends of the control valve are respectively connected with the injector and the extension hose.

3. The femoral artery specific puncture device for tortuous vascular pathways of claim 1, wherein the extension tube has a length of 15-25 cm.

4. The femoral artery specific puncture device for tortuous vascular pathways of claim 1, wherein the syringe has a capacity of 5-10 ml.

5. The femoral artery specific puncture device for tortuous vascular pathways of claim 1 wherein the needle sheath connector mates with the needle sheath trailing end and is 1-2cm in length.

6. The femoral artery specific puncture device for tortuosity of vascular path as claimed in claim 1, wherein the rear end of the stylet is fixedly arranged in the needle sheath connector, and the head end of the stylet is embedded in the needle sheath.

7. The femoral artery specific puncture device for a tortuous vascular pathway of claim 1 wherein the tip end of the stylet is blunt.

8. The femoral artery special puncture device for vascular path tortuosity as claimed in claim 1, wherein the guide wire is soft at the head end and hard at the hand end.

9. The femoral artery specific puncture device for tortuous vascular pathways of claim 1 wherein the soft guidewire is 5-10cm in length and the hard guidewire is 25-40cm in length.

10. The femoral artery specific puncture device for a vascular pathway tortuosity of claim 1, wherein the head end of the elbow guide wire is an arc elbow with a degree of curvature less than 45 degrees, the degree of curvature being the angle between the tangent of the elbow and the extension of the guide wire.

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