CN110169818A - One kind being used for endovascular electric coagulating apparatus - Google Patents

Abstract

The invention relates to an electrocoagulator used in blood vessels, which includes an insulating sheath and an electrocoagulation assembly. The electrocoagulation assembly includes a first insulating catheter, an electrocoagulation head, and a second insulating catheter arranged in sequence. It is made of functional memory alloy material with a hollow spherical structure. The spherical structure is hollow inside. The diameter of the spherical structure is larger than the outer diameter of the insulating sheath. When the electrocoagulation head is inside the insulating sheath, the electrocoagulation head is in the state of shrinkage state, when the electrocoagulation head protrudes from the insulating sheath, the electrocoagulation head returns to the expanded spherical state, and the interior of the electrocoagulation assembly is provided with a metal conductive part, and one end of the metal conductive part extends into the inside of the second insulating catheter and connects with the The electrocoagulation head is connected, and the other end of the metal conductive part is exposed from the end of the second insulating conduit away from the electrocoagulation head. The invention has the effect that the electrocoagulation head can fully contact the vein wall during the electrocoagulation process, thereby ensuring that the vein wall can be burned completely and avoiding recurrence.

Description

An electrocoagulator for intravascular

technical field

The invention relates to the technical field of medical devices, in particular to an electrocoagulator used in blood vessels.

Background technique

At present, the electrocoagulation catheter used in the treatment of varicose veins of the lower extremities is a long catheter containing metal wires. The electrocoagulation head extends out of the catheter at the front end of the long catheter. The shape of the similar electrocoagulation head is fixed, and the electrocoagulation head is connected to the metal wire in the long catheter, and is connected to the electrocoagulation generator through the metal wire and the power line connected with the metal wire in turn.

The above-mentioned design of the electrocoagulation head cannot change with the diameter of the vein, and it is difficult to ensure that the electrocoagulation head is fully in contact with the vein wall during the electrocoagulation process, especially when the vein cavity expands or the junction of the communicating branches, the vein wall is difficult to be burned completely, and it is difficult to completely burn the vein wall. Or it may remain at the entrance of the traffic branch, which becomes one of the reasons for the recurrence.

Contents of the invention

The purpose of the present invention is to provide an electrocoagulator used in blood vessels, which has the effect that the electrocoagulation head can fully contact the vein wall during the electrocoagulation process, thereby ensuring that the vein wall can be completely burned and avoiding recurrence .

Above-mentioned purpose of the invention of the present invention is achieved through the following technical solutions:

An electrocoagulator for intravascular use, including an insulating sheath and an electrocoagulation assembly, the electrocoagulation assembly is slidably connected to the inside of the insulating sheath, and the electrocoagulation assembly includes a first insulating catheter, an electrocoagulation head, and a second Insulated conduit, the two ends of the electrocoagulation head are fixedly connected with the first insulation conduit and the second insulation conduit respectively, the electrocoagulation head is made of conductive memory alloy material with a hollow spherical structure, the spherical structure is hollow inside, spherical The diameter of the structure is larger than the outer diameter of the insulating sheath. When the electrocoagulation head is inside the insulating sheath, the electrocoagulation head is in a state of contraction and deformation. When the electrocoagulation head protrudes from the insertion end of the insulating sheath, the electrocoagulation head returns to Expanded and expanded spherical state, the interior of the electrocoagulation assembly is provided with a metal conductive part, one end of the metal conductive part extends into the inside of the second insulating conduit and is connected to the electrocoagulation head, and the other end of the metal conductive part is away from the second insulating conduit One end of the electrocoagulation head is exposed.

By adopting the above technical scheme, the insertion end of the insulating sheath is sent to the part of the blood vessel where electrocoagulation is required, and the electrocoagulation component is pushed to make the electrocoagulation head protrude from the insertion end of the insulating sheath. Since the electrocoagulation head is made of memory alloy After the electrocoagulation head protrudes from the insertion end of the insulating sheath, the electrocoagulation head expands and returns to a spherical structure, thereby abutting against the blood vessel wall to ensure the electrocoagulation effect.

The present invention is further provided that: the electrocoagulation head includes several left-handed wires and several right-handed wires, and the left-handed wires and right-handed wires intersect to form a hollow braided ball structure with mesh.

By adopting the above technical solution, the contact area between the electrocoagulation head and the blood vessel wall after expansion can be ensured, thereby ensuring the electrocoagulation effect of the electrocoagulation head.

The present invention is further configured as follows: the electrocoagulation head is composed of several memory alloy wires, and spaces are left between adjacent memory alloy wires.

By adopting the above-mentioned technical solution, when the electrocoagulation head extends out of the insulating sheath, the memory alloy wire constituting the electrocoagulation head returns to its original state from a helical shape, so that the entire electrocoagulation head expands and expands to abut against the vessel wall.

The present invention is further configured as follows: when the electrocoagulation head is located inside the insulating sheath, the electrocoagulation head is in the shape of a rugby ball as a whole.

By adopting the above technical solution, it is convenient to push the electrocoagulation head to move inside the insulating sheath.

The present invention is further provided that: the metal conductive part protrudes into the inside of the first insulating conduit and is fixedly connected with the first insulating conduit, and the metal conductive part is slidably connected with the second insulating conduit.

By adopting the above-mentioned technical solution, when the effect of the coagulation head unfolding is not good, the metal conductive part can be pulled, so that the first insulating conduit and the second insulating conduit are close together, so that the electrocoagulation head continues to deform and expand after being squeezed, increasing the The large diameter ensures that the coagulation head can abut against the vessel wall.

The present invention is further configured as follows: the inside of the metal conductive member is provided with a guide wire perforation.

By adopting the above technical solution, the metal conductive member can be placed on the guide wire pre-implanted in the blood vessel, so as to be guided by the guide wire, so as to ensure that the electrocoagulation component can reach the predetermined treatment site through the tortuous blood vessel.

The present invention is further provided that: an insulating head is provided outside one end of the metal conductive member outside the second insulating conduit.

By adopting the above technical solution, it is convenient for the medical personnel to pull the metal conductive member, thereby moving the first insulating catheter to the direction of the second insulating catheter, so that the electrocoagulation head expands under pressure.

The present invention further provides that: the end of the second insulating conduit away from the electrocoagulation head is provided with a holding head whose diameter gradually increases, and the diameter of the large end of the holding head is larger than the diameter of the inner hole of the second insulating conduit.

By adopting the above technical solution, it is convenient for medical personnel to hold the second insulating catheter, thereby pushing the electrocoagulation component to move inside the insulating sheath.

The present invention is further configured as follows: the operating end of the insulating sheath is provided with a drug injection tube communicating with the interior of the insulating sheath, the end of the drug injection tube away from the insulating sheath is provided with a syringe joint, and a sealing cap is threadedly connected to the syringe joint.

By adopting the above-mentioned technical scheme, it is convenient to inject medicine into the blood vessel before and after electrocoagulation through the medicine injection tube.

In summary, the beneficial technical effects of the present invention are:

1. By sending the insertion end of the insulating sheath to the part of the blood vessel that needs electrocoagulation, push the electrocoagulation component, so that the electrocoagulation head protrudes from the insertion end of the insulating sheath. Since the electrocoagulation head is made of memory alloy, After the electrocoagulation head protrudes from the insertion end of the insulating sheath, the electrocoagulation head expands and expands to return to a spherical structure, thereby abutting against the blood vessel wall to ensure the electrocoagulation effect.

2. The sealing assembly is arranged at the insertion end of the insulating sheath, and the medicine injection tube is arranged on the side wall of the insertion end of the insulating sheath, so as to facilitate the injection of medicine into the blood vessel before and after electrocoagulation.

Description of drawings

Fig. 1 is the structural representation under the practical state of electric coagulator;

Fig. 2 is a schematic structural view of the electrocoagulation component in a state inside the insulating sheath;

Fig. 3 is a sectional view of the electrocoagulation assembly;

Fig. 4 is the structural representation of embodiment 2;

Fig. 5 is a schematic structural view of the electrocoagulation assembly in Example 2 under the condition that it is located inside the insulating sheath.

In the figure, 1. insulating sheath; 11. drug injection tube; 2. electrocoagulation assembly; 21. first insulating catheter; 22. electrocoagulation head; 221. left-handed wire; 222. right-handed wire; 223. memory alloy wire 23, the second insulating catheter; 231, the grip head; 3, the metal conductive sleeve; 31, the insulation head; 32, the guide wire perforation; 4, the metal guide wire; 5, the syringe connector; 6, the cap.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Referring to FIG. 1 , it is an electrocoagulator for intravascular use disclosed by the present invention, which includes an insulating sheath 1 and an electrocoagulation assembly 2 . Swipe to connect. Two ends of the insulating sheath 1 in the length direction, one end is an insertion end of the insulating sheath 1 , and the other end is an operating end for a doctor to hold and operate.

1 and 2, the electrocoagulation assembly 2 includes a first insulating conduit 21, an electrocoagulation head 22 and a second insulating conduit 23 arranged in sequence, wherein the two ends of the electrocoagulation head 22 are connected to the first insulating conduit 21 and the second insulating conduit 23 respectively. The insulating conduit 23 is fixedly connected. The end of the first insulating conduit 21 away from the electrocoagulation head 22 is the head end of the electrocoagulation assembly 2 , and the end of the second insulating conduit 23 away from the electrocoagulation head 22 is the tail end of the electrocoagulation assembly 2 . The head end of the electrocoagulation assembly 2 is inserted into the interior of the insulating sheath 1 from the operating end of the insulating sheath 1 .

In the unused state of the electrocoagulator, the first insulating conduit 21 and the electrocoagulation head 22 are all located inside the insulating sheath 1, and the second insulating conduit 23 is separated from the end of the operating end of the insulating sheath 1 at an end far away from the electrocoagulation head 22. head out. The second insulating catheter 23 exposes the length of the operating end of the insulating sheath 1 so that when the electrocoagulation assembly 2 as a whole moves toward the insertion end of the insulating sheath 1, the first insulating catheter 21 and the electrocoagulation head 22 can be inserted from the insulating sheath 1. end fully extended. When using the electrocoagulator, push the second insulating catheter 23 so that the first insulating catheter 21 and the coagulation head 22 move toward the insertion end of the insulating sheath 1 until the electrocoagulation head 22 is fully extended to the insulating sheath 1 outside of the insertion end.

The end of the second insulating catheter 23 away from the electrocoagulation head 22 is provided with a tapered holding head 231 whose diameter gradually increases. The holding head 231 is integrally formed with the second insulating conduit 23 . By holding the head 231 , it is convenient for medical personnel to hold the second insulating catheter 23 , so as to push the entire electrocoagulation assembly 2 to move inside the insulating sheath 1 .

The electrocoagulation head 22 includes several left-handed wires 221 made of conductive memory alloy material and several right-handed wires 222 made of conductive memory alloy material. Each left-handed wire 221 is located between two adjacent right-handed wires 222 . The left-handed wire 221 and the right-handed wire 222 jointly form a hollow braided ball structure with mesh, and the two ends of the left-handed wire 221 and the right-handed wire 222 are fixedly connected with the first insulating conduit 21 and the second insulating conduit 23 respectively. When the electrocoagulation head 22 is located inside the insulating sheath 1, the electrocoagulation head 22 is in a state of elongation and contraction as a whole. The memory function of the wire 221 and the right-handed wire 222 makes the electrocoagulation head 22 return to the expanded and expanded spherical state. In order to facilitate the movement of the electrocoagulation head 22 inside the insulating sheath 1 , when the electrocoagulation head 22 is located inside the insulating sheath 1 , the overall electrocoagulation head 22 is in the shape of a rugby ball.

Referring to Fig. 1, when the blood vessel is electrocoagulated, the electrocoagulation assembly 2 is pushed so that the electrocoagulation head 22 of the electrocoagulation assembly 2 extends out of the insulating sheath 1, and the electrocoagulation head 22 of the insulating sheath 1 protrudes toward the expanded The spherical state returns to abut against the vessel wall.

Referring to FIG. 2 and FIG. 3 , a metal conductive sleeve 3 is disposed inside the second insulating conduit 23 , and the length of the metal conductive sleeve 3 is longer than the total length of the electrocoagulation assembly 2 . One end of the metal conductive sleeve 3 penetrates the inside of the second insulating conduit 23 and the electrocoagulation head 22 so as to extend into the inside of the first insulating conduit 21 , and the other end is located outside the tail end of the second insulating conduit 23 . One end of the metal conductive sleeve 3 protruding into the first insulating conduit 21 is fixedly connected with the first insulating conduit 21 , and the metal conductive sleeve 3 is slidably connected with the second insulating conduit 23 . One end of the electrocoagulation head 22 connected with the first insulating conduit 21 extends into the inner hole of the first insulating conduit 21 and is connected with the metal conductive sleeve 3 . When the metal conductive sleeve 3 is energized, the metal conductive sleeve 3 conducts electricity to the electrocoagulation head 22 .

Referring to Fig. 2 and Fig. 3, an insulating head 31 made of a hard plastic material is arranged at the end of the metal conductive sleeve 3 outside the tail end of the second insulating conduit 23, and the insulating head 31 is sleeved on the outside of the metal conductive sleeve 3 and It is bonded and fixed with the metal conductive sleeve 3 . External threads are provided on the outer surface of the insulating head 31 .

The inner hole of the metal conductive sleeve 3 is a guide wire perforation 32 , and the guide wire perforation 32 of the metal conductive sleeve 3 is used for the metal guide wire 4 to pass through. When in use, the metal guide wire 4 is pre-implanted in the blood vessel, the metal conductive sleeve 3 is set on the metal guide wire 4, and guided by the metal guide wire 4, so that the electrocoagulation component 2 is sent into the blood vessel. At the time, the electrocoagulation assembly 2 is accurately moved to the desired electrocoagulation position in the blood vessel in the tortuous blood vessel.

Referring to FIG. 1 , a drug injection tube 11 communicating with the inside of the insulating sheath 1 is provided on the side wall of the operating end of the insulating sheath 1 . The injection tube 11 and the insulating sheath 1 are integrally formed. The end of the injection tube 11 away from the insulating sheath 1 is provided with a syringe connector 5 , and the outer surface of the end of the syringe connector 5 away from the drug injection tube 11 is provided with external threads. A sealing cap 6 is threadedly connected to the external thread of the syringe joint 5 , and the inner hole at the end of the injection tube 11 away from the insulating sheath 1 is closed by the sealing cap 6 .

When it is necessary to inject medicine into the blood vessel, the second insulating catheter 23 is pushed to move toward the insertion end of the insulating sheath 1 , so that the holding head 231 closes the inner hole of the operating end of the insulating sheath 1 . The sealing cap 6 on the injection tube 11 is removed, the syringe is docked with the syringe connector 5, and the medicine is injected into the injection tube 11, and the medicine is sent into the inside of the blood vessel through the insulating sheath 1.

Embodiment 2, referring to Fig. 4 and Fig. 5, is a kind of electrocoagulator used in blood vessels disclosed by the present invention. Functional memory alloy wire 223 is a hollow spherical structure with a hollow structure, and the diameter of the spherical structure is larger than the outer diameter of the insulating sheath 1, and the two ends of the memory alloy wire 223 are respectively connected to the first insulating catheter 21 and the second The two insulating conduits 23 are connected. Spaces are left between adjacent memory alloy wires 223 . When the electrocoagulation head 22 is located inside the insulating sheath 1, the electrocoagulation head 22 is in a distorted state. When the electrocoagulation head 22 stretches out from the insertion end of the insulating sheath 1, the memory alloy wire 223 memory function, so that the electrocoagulation head 22 returns to the expanded spherical state. When the electrocoagulation head 22 is inside the insulating sheath 1 , the memory alloy wire forming the electrocoagulation head 22 is bent into a helical shape. In order to facilitate the movement of the electrocoagulation head 22 inside the insulating sheath 1 , when the electrocoagulation head 22 is located inside the insulating sheath, the whole body of the electrocoagulation head 22 is in the shape of a rugby ball.

The embodiments of this specific implementation mode are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention, so: all equivalent changes made according to the structure, shape and principle of the present invention should be covered by the present invention. within the protection scope of the present invention.

Claims (9)

1. one kind is used for endovascular electric coagulating apparatus, including insulation sheath (1) and coagulation component (2), it is characterised in that: the electricity Solidifying component (2) are slidably connected to the inside of insulation sheath (1), and the coagulation component (2) includes that the first insulation set gradually is led Manage (21), electriocoagulator (22) and the second insulated conduit (23), the both ends of the electriocoagulator (22) respectively with the first insulated conduit (21) it is fixedly linked with the second insulated conduit (23), the electriocoagulator (22) is made of the memory alloy material with conducting function The chondritic with hollow out, the chondritic inner hollow, the diameter of the chondritic is greater than insulation sheath (1) Outer diameter, when the electriocoagulator (22) is internal positioned at insulation sheath (1), the electriocoagulator (22) is in the state for tightening deformation, institute When stating the insertion end stretching of electriocoagulator (22) self-insulating sheath (1), the electriocoagulator (22) is restored to the ball shape of expansion expansion State, the coagulation component (2) are internally provided with metallic conduction part, and metallic conduction part one end extend into the second insulated conduit (23) inside and with electriocoagulator (22) Xiang Xianglian, the other end of the metallic conduction part is from the second insulated conduit (23) far from electricity Expose the one end of solidifying head (22).

2. a kind of endovascular electric coagulating apparatus to be used for according to claim 1, it is characterised in that: the electriocoagulator (22) includes Several left-handed silks (221) and several dextrorotation silks (222), the left-handed silk (221) and dextrorotation silk (222) intersect to form one The hollow braiding spherical structure with mesh.

A kind of be used for endovascular electric coagulating apparatus 3. according to claim 1, it is characterised in that: the electriocoagulator (22) if by Dry memory alloy wire (223) forms, spaced between adjacent memory alloy wire (223).

4. according to claim 1 a kind of for endovascular electric coagulating apparatus, it is characterised in that: the electriocoagulator (22) is located at It insulate in the state of sheath (1) inside, the electriocoagulator (22) is integrally in rugby shape.

5. according to claim 1 a kind of for endovascular electric coagulating apparatus, it is characterised in that: the metallic conduction part protrudes into To the first insulated conduit (21) inside and be fixedly linked between the first insulated conduit (21), the metallic conduction part and second It slides and is connected between insulated conduit (23).

A kind of be used for endovascular electric coagulating apparatus 6. according to claim 5, it is characterised in that: the metallic conduction part it is interior Portion offers seal wire perforation (32).

7. according to claim 5 a kind of for endovascular electric coagulating apparatus, it is characterised in that: the metallic conduction part is located at Second insulated conduit (23) is provided with insulative head (31) outside external one end.

8. according to claim 1 a kind of for endovascular electric coagulating apparatus, it is characterised in that: second insulated conduit (23) one end far from electriocoagulator (22) is provided with the holding head (231) that diameter becomes larger, the big end for holding head (231) Diameter is greater than the diameter of bore of the second insulated conduit (23).

9. according to claim 8 a kind of for endovascular electric coagulating apparatus, it is characterised in that: insulation sheath (1) Operating side is provided with the medicine-pouring pipe (11) being connected with the inside of insulation sheath (1), and the medicine-pouring pipe (11) is far from insulation sheath (1) one end is provided with syringe adapter (5), is threaded with sealing cap (6) on the syringe adapter (5).