CN219645862U - Balloon filling type radio frequency ablation catheter - Google Patents

Abstract

The utility model discloses a balloon filling type radio frequency ablation catheter, which comprises a balloon, a heating spring, a catheter body and a control handle, wherein the balloon is provided with a heating spring; the two ends of the saccule are adhered and fixed on the catheter tube body; the heating spring surrounds the outer surface of the balloon; the catheter body is connected with the front end of the control handle through a catheter protective sleeve; the rear end of the control handle is provided with a liquid inlet interface; the rear end of the control handle is provided with a connecting cable which is connected with the radio frequency generator. According to the utility model, the heating spring is arranged on the radio frequency ablation catheter, physiological saline is injected into the balloon during operation to enable the balloon to be full, then the balloon expands the heating spring and clings to the inner wall of a blood vessel, blood in the blood vessel is extruded to an area beyond the heating element by the balloon, and the effect of directly starting treatment without pressing skin by an operator is realized, and the operation is convenient and rapid, and the treatment effect is good.

Description

Balloon filling type radio frequency ablation catheter

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a balloon filling type radio frequency ablation catheter.

Background

Varicose veins refer to the tortuous and distention of the veins due to blood stasis, weakness of the walls of the veins, and the like. Varicose veins of the lower limbs are formed for a number of reasons, the most common being simple superficial varicose veins of the lower limbs, the main disease of which is the insufficiency of the femoral saphenous vein valve. Another important cause is primary deep vein valvular insufficiency of the lower limbs, which often incorporates great saphenous vein valvular insufficiency and often manifests itself in tortuous and distention of the superficial veins. In addition, the lower limb deep vein thrombosis post-syndrome occurs because of shallow vein compensatory tortuosity expansion caused by deep vein reflux disorder; arteriovenous fistula of lower limbs and venous malformation large bone fat syndrome can also show superficial varicose veins of lower limbs; lower vena cava reflux obstruction, such as bujia syndrome, can also lead to varicose veins of the lower extremities.

For varicose vein, the current high-efficiency and safe treatment method is surgical intervention treatment, a radio frequency catheter with a heating device is inserted into a diseased blood vessel in the operation, the heating device is placed at a blood vessel stretching position through B ultrasonic observation, a radio frequency closed generator is connected outside the body, the generator can transmit radio frequency energy to the stretching blood vessel tissue through the catheter heating device, the stretched blood vessel is heated and shrunk, and an inflammatory denaturation occurs on a fiber layer to completely block the stretched blood vessel, so that the treatment purpose is achieved. In order to make the catheter heating element effectively heat and treat the wall of a vein blood vessel and prevent heat from being taken away by blood in the operation process, an operator needs to press the skin of a patient when the heating element heats, so that the inner wall of the curved vein blood vessel is attached to the catheter heating element, and no blood flows in the blood vessel around the heating element, and the operation level of the operator can easily influence the treatment effect under the condition. Because if the pressing force of the operator is too light, the catheter heating element is not attached to the wall of the vein blood vessel, blood flows in the blood vessel, and under the condition, the blood can take away heat during heating treatment, and the vein wall cannot fully obtain the heat, so that the treatment effect is poor; if the pressing force of the operator is too large, the catheter is bent or even damaged, so that the catheter cannot work normally.

The patent CN216148182U discloses a novel lower limb varicosity radiofrequency ablation catheter, including first pipe and second pipe, thermocouple wire and third pipe are worn to be equipped with to the inside lower extreme of first pipe, the third pipe is located the below of thermocouple wire, and the tip of third pipe runs through first pipe outer wall and extends to its outside, the outward appearance wall winding of second pipe has the resistance wire, the outside pyrocondensation of second pipe has the pyrocondensation pipe, the resistance wire runs through the second pipe and extends to inside the first pipe, the tip integrated into one piece of first pipe has arc portion, and the radiofrequency ablation catheter length is 12cm when big saphenous vein is handled with traditional pipe design for this patent and is 5cm when saphenous vein is handled, from this the required time of radiofrequency ablation saphenous vein trunk is short, and then effectively reduces the operation time.

Patent CN215778583U discloses a be used for treating varicose radiofrequency ablation pipe, including ablation electrode, sleeve pipe and connector, fixedly connected with temperature sensor probe on the ablation electrode, all be connected through the optical fiber wire between ablation electrode and temperature sensor probe and the connector, the sleeve pipe is fixed to be cup jointed in the outside of optical fiber wire, two bracing pieces that fixedly connected with symmetry set up on the outer wall of connector, the clamping plate has been cup jointed in the slip on the bracing piece, be equipped with the opening that corresponds with the bracing piece on the clamping plate, the kelly has been inserted in the slip on the inner wall of opening, the equidistance is equipped with a plurality of draw-in grooves that correspond with the kelly on the bracing piece, the sleeve pipe includes the basic unit, the outside of basic unit is equipped with the interference killing layer. The setting of this patent through fixed establishment and protection architecture makes the connector of ablation pipe convenient fixed, can strengthen the tensile and the interference killing feature of ablation pipe simultaneously to the result of use of ablation pipe has been promoted.

The above patents all improve certain operation convenience and treatment effect, but do not solve the problems that the heating element of the catheter is not attached to the wall of the vein blood vessel due to improper operation in the operation, and the vein wall cannot fully obtain heat due to heat taken away by blood in the flowing process; or the catheter is bent and damaged, so that the catheter cannot work smoothly; this will greatly reduce the therapeutic effect on the patient in the book. Therefore, the method has important significance for solving the problems, realizing convenient operation in operation, enabling the heating element to be clung to the inner wall of the blood vessel, achieving the optimal treatment effect and relieving the pain of patients.

Disclosure of Invention

Aiming at the problems in the background art, the utility model provides the balloon filling type radio frequency ablation catheter, the heating spring is arranged on the radio frequency ablation catheter, physiological saline is injected into the balloon during operation to enable the balloon to be filled, then the balloon expands the heating spring and clings to the inner wall of a blood vessel, blood in the blood vessel is extruded to an area beyond a heating element by the balloon, and the effect of directly starting treatment without pressing skin by an operator is realized, and the operation is convenient and the treatment effect is good.

The specific technical scheme is as follows:

a balloon filling type radio frequency ablation catheter comprises a balloon, a heating spring, a catheter body and a control handle;

the two ends of the balloon are adhered and fixed on the catheter body;

the heating spring surrounds the outer surface of the balloon;

the catheter tube body is connected with the front end of the control handle through a catheter protection sleeve;

the rear end of the control handle is provided with a liquid inlet interface;

the rear end of the control handle is provided with a connecting cable which is connected with the radio frequency generator.

Preferably, a liquid inlet pipe is arranged in the catheter body;

the tail end of the liquid inlet pipe is connected with the liquid inlet interface, and physiological saline is injected into the liquid inlet pipe from the liquid inlet interface through an injection needle cylinder.

Preferably, a plurality of liquid leakage holes are formed in the outer side of the circumference of the catheter tube body at the position corresponding to the balloon, and physiological saline reaches the liquid leakage holes through the liquid inlet pipe and flows out of the liquid leakage holes to the inside of the balloon.

Preferably, a wire and a thermocouple are arranged between the outer layer of the liquid inlet pipe and the inner layer of the catheter pipe.

Preferably, the tail end of the heating spring penetrates into the catheter tube body and is soldered with the lead wire;

and the thermocouple is arranged at the middle part of the heating spring.

Preferably, the head end of the catheter tube body is adhered with a guiding rubber head;

the guiding glue head is made of UV3311 glue.

Preferably, the two ends of the balloon are provided with integrally processed fixing rings, and glue is smeared along the circumference of the fixing rings to bond the fixing rings on the catheter tube.

Preferably, the catheter protection sleeve is arranged at the front end of the control handle;

the catheter tube penetrates into the catheter protection sleeve and is bonded with the control handle;

the catheter tube is also bonded to the catheter sheath.

Preferably, a cable fixing groove is formed in the tail portion of the rear end of the control handle, and the connecting cable is adhered and fixed to the cable fixing groove through quick-drying glue.

Preferably, a start button is arranged on the control handle;

a circuit board is arranged in the control handle, a trigger switch is welded on the circuit board, and the trigger switch is correspondingly arranged with the starting button;

the left end of the circuit board is welded with the lead and the thermocouple, and the right end of the circuit board is welded with the cable;

a support beam is arranged in the control handle and behind the circuit board.

The technical scheme of the utility model has the following advantages and beneficial effects:

(1) According to the balloon filling type radio frequency ablation catheter provided by the utility model, the heating spring is arranged on the radio frequency ablation catheter, physiological saline is injected into the balloon during operation to fill the balloon, then the balloon expands the heating spring and clings to the inner wall of a blood vessel, blood in the blood vessel is extruded to an area beyond a heating element by the balloon, and the treatment can be directly started on the premise that an operator does not need to press the skin; the operation is simpler, and the operation is safer and more reliable.

(2) Through offer a plurality of weeping holes in catheter body and sacculus corresponding position department, enter into the normal saline rethread on the catheter body of catheter body through the feed liquor pipe and reach the sacculus, make the sacculus full, and then the sacculus expansion makes the spring that generates heat expand to hug closely with the vessel wall, has improved the laminating of catheter heating element and vessel wall, and then improves treatment.

(3) The utility model provides a this sacculus filling type radio frequency ablation pipe, the structure is succinct, and it is convenient to use, and the heating element on the pipe can hug closely the vascular inner wall, has improved the operating efficiency and the treatment of art person in the operation greatly, effectively alleviates patient's pain.

The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the technical means of the present utility model, so that the present utility model may be practiced according to the teachings of the present specification, and so that the above-mentioned and other objects, features and advantages of the present utility model may be better understood, and the following detailed description of the preferred embodiments of the present utility model will be presented in conjunction with the accompanying drawings.

The above and other objects, advantages and features of the present utility model will become more apparent to those skilled in the art from the following detailed description of the specific embodiments of the present utility model when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a schematic illustration of the structure of a balloon-filled radiofrequency ablation catheter of the present disclosure;

FIG. 2 is a schematic illustration of the configuration of a balloon portion of a balloon-filled radiofrequency ablation catheter in accordance with the present disclosure;

FIG. 3 is a schematic view of the internal arrangement of a catheter tube in a balloon-filled radiofrequency ablation catheter according to the present disclosure;

FIG. 4 is a schematic view of the structure of a weeping hole in a balloon-filled radiofrequency ablation catheter according to the present disclosure;

FIG. 5 is a schematic illustration of the steering handle in a balloon-filled radiofrequency ablation catheter in accordance with the present disclosure;

FIG. 6 is a schematic diagram showing the complete filling state of the balloon after the normal saline is injected in the balloon in the preferred embodiment;

FIG. 7 is a schematic illustration of an operational procedure in a balloon-filled radiofrequency ablation catheter in accordance with the present disclosure;

reference numerals: 101. a balloon; 102. a heating spring; 103. a catheter tube; 104. a catheter protective sheath; 105. a control handle; 106. a start button; 107. a liquid inlet port; 108. a connecting cable; 109. an injection cylinder; 201. guiding the rubber head; 202. a fixing ring; 203. a wire; 204. a first weld; 205. a second weld; 206. a thermocouple; 301. a circuit board; 302. triggering a switch; 303. a support beam; 304. a cable fixing groove; 305. a liquid inlet pipe; 401. and a liquid leakage hole.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. In the following description, specific details such as specific configurations and components are provided merely to facilitate a thorough understanding of embodiments of the utility model. It will therefore be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the utility model. In addition, descriptions of well-known functions and constructions are omitted in the embodiments for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "this embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present utility model. Thus, the appearances of the "one embodiment" or "this embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: the terms "/and" herein describe another associative object relationship, indicating that there may be two relationships, e.g., a/and B, may indicate that: the character "/" herein generally indicates that the associated object is an "or" relationship.

The term "at least one" is herein merely an association relation describing an associated object, meaning that there may be three kinds of relations, e.g., at least one of a and B may represent: a exists alone, A and B exist together, and B exists alone.

It is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprise," "include," or any other variation thereof, are intended to cover a non-exclusive inclusion.

Example 1

This embodiment describes a balloon-filled radiofrequency ablation catheter structure.

As shown in fig. 1, fig. 1 is a schematic structural diagram of a balloon-filled radiofrequency ablation catheter according to the present disclosure. A balloon filling type radio frequency ablation catheter comprises a balloon 101, a heating spring 102, a catheter tube 103 and a control handle 105;

the two ends of the balloon 101 are adhered and fixed on the catheter tube 103;

the heating spring 102 surrounds the outer surface of the balloon 101;

the catheter tube 103 is connected with the front end of the control handle 105 through a catheter protection sleeve 104;

the rear end of the control handle 105 is provided with a liquid inlet interface 107;

the rear end of the control handle 105 is provided with a connecting cable 108, and the connecting cable 108 is connected with a radio frequency generator for radio frequency treatment.

As shown in fig. 3 and 5, fig. 3 is a schematic diagram of an internal arrangement structure of a catheter tube in a balloon-filled radiofrequency ablation catheter according to the present disclosure, and fig. 5 is a schematic diagram of a control handle in a balloon-filled radiofrequency ablation catheter according to the present disclosure.

A liquid inlet pipe 305 is arranged in the catheter tube 103; the tail end of the liquid inlet pipe 305 is connected with the liquid inlet interface 107, physiological saline is injected into the liquid inlet pipe 305 from the liquid inlet interface 107 through the injection syringe 109, and reaches the balloon 101 through the liquid inlet pipe 305, so that the balloon is filled.

Further, a wire 203 and a thermocouple 206 are arranged between the outer layer of the liquid inlet pipe 305 and the inner layer of the catheter tube 103.

As shown in fig. 2, fig. 2 is a schematic structural view of a balloon portion of a balloon-filled radiofrequency ablation catheter according to the present disclosure. The guide rubber head 201 is adhered to the head end of the catheter tube 103, and the guide rubber head 201 is made of UV3311 glue. The material has good biocompatibility and elasticity, can lead the rubber head 201 to contact with the vessel wall and lead the catheter to advance to reach the lesion site after the catheter enters the human body, and can not cause biological hazard to the human body.

Further, two ends of the balloon 101 are provided with integrally processed fixing rings 202, and glue is applied along the circumference of the fixing rings 202 to adhere the fixing rings 202 to the catheter tube 103.

Further, the tail end of the heat generating spring 102 penetrates into the catheter tube 103 and is soldered to the lead 203. After welding, in order to ensure that the first welding point 204 and the second welding point 205 are not shorted, the two welding points are spaced by 2cm, and a proper amount of insulating glue is wrapped at the two welding points. The thermocouple 206 is installed in the middle of the heating spring 102, and the thermocouple 205 is installed to monitor the temperature of the heating spring 102 in real time, so that the observation of the treatment effect of the patient and the control of the equipment in the operation can be facilitated.

Fig. 5 is a schematic view of a control handle in a balloon-filled radiofrequency ablation catheter according to the present disclosure, as shown in fig. 5. The catheter protection sleeve 104 is arranged at the front end of the control handle 105; the catheter tube 103 penetrates into the catheter protection sleeve 104 and is bonded with the control handle 105; the catheter tube 103 is also bonded to the catheter sheath 104.

Further, a cable fixing groove 304 is formed at the tail of the rear end of the control handle 105, and the connecting cable 108 is adhered and fixed at the cable fixing groove 304 through quick-drying glue.

Further, a start button 106 is provided on the control handle 105;

a circuit board 301 is installed in the control handle 105, a trigger switch 302 is welded on the circuit board 301, and the trigger switch 302 is installed corresponding to the start button 106. By pressing the start button 106, the trigger switch 302 can be turned on.

Further, the left end of the circuit board 301 is welded with the lead 203 and the thermocouple 206, and the right end of the circuit board 301 is welded with the cable 108;

a support beam 303 is provided in the steering handle 105 behind the wiring board 301.

In the embodiment, the catheter has a simple structure, is convenient to operate, and controls the catheter to enter and the radiofrequency instrument to release energy through the control handle; the balloon can be tightly attached to the inner wall of a blood vessel through the heating spring after being expanded by normal saline, so that the heating element is tightly attached to the wall of the blood vessel, and blood in the blood vessel can be extruded to a region beyond the heating element by the filled balloon, thereby solving the problems that the heating element of the catheter is not attached to the wall of the vein blood vessel, blood flows in the blood vessel, heat can be taken away by the blood during heating treatment under the condition, and the vein wall cannot fully obtain heat, so that the treatment effect is poor.

Example 2

Based on the above embodiment 1, this embodiment further supplements the structure of the balloon-filled radiofrequency ablation catheter.

As shown in fig. 4, fig. 4 is a schematic structural diagram of a weeping hole in a balloon-filled radiofrequency ablation catheter according to the present disclosure. A plurality of liquid leakage holes 401 are formed on the outer side of the circumference of the catheter tube 103 at the position corresponding to the balloon 101, and physiological saline reaches the liquid leakage holes 401 through the liquid inlet pipe 305, and flows out from the liquid leakage holes 401 to the inside of the balloon 101 so as to fill the balloon 101. In operation, a doctor can control the size of the balloon 101 after filling according to the amount of physiological saline, so as to control the size of the heating spring 102, and the heating spring 102 can be tightly attached to the vessel wall after being expanded along with the filling of the balloon 101, and the treatment effect of opening the radio frequency ablation is optimal at the moment.

Example 3

Based on the embodiments 1 and 2, the use of the balloon-filled radiofrequency ablation catheter in this embodiment is briefly described, as shown in fig. 6 and 7, fig. 6 is a schematic diagram of the complete filling state after the normal saline is injected into the balloon in the preferred embodiment, and fig. 7 is an operation flow in the balloon-filled radiofrequency ablation catheter disclosed in the present utility model.

In operation, firstly, the radio frequency catheter is inserted into a blood vessel to be treated through skin puncture, the catheter heating spring 102 can be guided to reach a bending position through B ultrasonic in vitro observation, physiological saline is injected from the liquid inlet port 107 through the injection syringe 109, and the physiological saline can be delivered into the balloon 101 through the liquid inlet pipe 305 and the liquid leakage hole 401 on the catheter body 103, so that the balloon 101 is filled. Meanwhile, under the observation of B ultrasonic, the size of the balloon 101 filled with normal saline is controlled, the balloon 101 is filled with normal saline, the heating spring 102 is expanded, the heating spring 102 is fully attached to the wall of a blood vessel, and blood in the blood vessel is extruded to an area beyond a heating element by the balloon 101. At this time, the start button 106 on the control handle 105 is pressed, the radiofrequency generator is started to output radiofrequency energy, the heating spring 102 is heated to the treatment temperature of 120 ℃ for 20 seconds for one-time cyclic treatment under the monitoring of the thermocouple 206, and the catheter can be moved to perform the treatment of the next section of blood vessel after the treatment is completed.

According to the utility model, the heating spring is arranged on the radio frequency ablation catheter, physiological saline is injected into the balloon during operation to enable the balloon to be filled, then the balloon expands the heating spring and clings to the inner wall of a blood vessel, blood in the blood vessel is extruded to an area beyond the heating element by the balloon, and the treatment can be directly carried out on the premise that an operator does not need to press the skin, so that the operation is simpler, and the operation effect is more efficient, safer and more reliable.

It is to be understood that the above-described embodiments of the present utility model are merely illustrative of or explanation of the principles of the present utility model and are in no way limiting of the utility model. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present utility model should be included in the scope of the present utility model. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.

Claims (10)

1. The balloon filling type radio frequency ablation catheter is characterized by comprising a balloon (101), a heating spring (102), a catheter tube body (103) and a control handle (105);

two ends of the balloon (101) are adhered and fixed on the catheter tube body (103);

the heating spring (102) surrounds the outer surface of the balloon (101);

the catheter tube (103) is connected with the front end of the control handle (105) through a catheter protection sleeve (104);

the rear end of the control handle (105) is provided with a liquid inlet interface (107);

the rear end of the control handle (105) is provided with a connecting cable (108), and the connecting cable (108) is connected with the radio frequency generator.

2. The balloon-filled radiofrequency ablation catheter as recited in claim 1, wherein a fluid inlet tube (305) is mounted within the catheter tube (103);

the tail end of the liquid inlet pipe (305) is connected with the liquid inlet interface (107), and physiological saline is injected into the liquid inlet pipe (305) from the liquid inlet interface (107) through an injection needle cylinder (109).

3. The balloon-filled radiofrequency ablation catheter according to claim 2, wherein a plurality of liquid leakage holes (401) are formed in the outer circumference of the catheter tube (103) at positions corresponding to the balloon (101), and physiological saline reaches the liquid leakage holes (401) through the liquid inlet tube (305) and flows out of the liquid leakage holes (401) to the inside of the balloon (101).

4. A balloon-filled radiofrequency ablation catheter as claimed in claim 3, wherein a wire (203) and a thermocouple (206) are arranged between the outer layer of the inlet tube (305) and the inner layer of the catheter tube (103).

5. The balloon-filled radiofrequency ablation catheter as recited in claim 4, wherein the tail end of the heat-generating spring (102) penetrates inside the catheter tube (103) and is soldered to the lead wire (203);

the thermocouple (206) is mounted in the middle of the heating spring (102).

6. A balloon-filled radiofrequency ablation catheter as claimed in any one of claims 1, 2 or 5, wherein the catheter tube (103) has a guide rubber head (201) bonded to the head end;

the guiding glue head (201) is made of UV3311 glue.

7. A balloon-filled radiofrequency ablation catheter as claimed in either of claims 1 or 2, wherein the balloon (101) is provided with integrally formed retaining rings (202) at both ends, and glue is applied around the retaining rings (202) to bond the retaining rings (202) to the catheter tube (103).

8. A balloon-filled radiofrequency ablation catheter as claimed in either of claims 1 or 2, wherein the catheter sheath (104) is mounted at the front end of the steering handle (105);

the catheter tube (103) penetrates into the catheter protection sleeve (104) and is bonded with the control handle (105);

the catheter tube (103) is also bonded to the catheter sheath (104).

9. A balloon-filled radiofrequency ablation catheter as claimed in any one of claims 1 or 2, wherein a cable fixing groove (304) is formed in the rear end tail of the control handle (105), and the connecting cable (108) is adhered and fixed at the cable fixing groove (304) through quick-drying glue.

10. The balloon-filled radiofrequency ablation catheter as recited in claim 4, wherein the steering handle (105) is provided with a start button (106);

a circuit board (301) is mounted in the control handle (105), a trigger switch (302) is welded on the circuit board (301), and the trigger switch (302) is correspondingly mounted with the starting button (106);

the left end of the circuit board (301) is welded with the lead (203) and the thermocouple (206), and the right end of the circuit board (301) is welded with the cable (108);

a support beam (303) is arranged in the control handle (105) behind the circuit board (301).