CN219166677U

CN219166677U - Ablation operation isolation device

Info

Publication number: CN219166677U
Application number: CN202223127593.7U
Authority: CN
Inventors: 刘振川; 刘珈齐
Original assignee: Canyon Medical Inc
Current assignee: Canyon Medical Inc
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-06-13
Anticipated expiration: 2032-11-24

Abstract

The utility model relates to an ablation operation isolation device, and belongs to the technical field of medical appliances. The device comprises a catheter, a balloon coated on the outer side of the catheter, a fixed ring arranged on the outer side of the balloon and a sealing sleeve connected with the fixed ring, wherein the catheter is provided with a tip which is convenient to be placed into a human body, and a filling cavity communicated with the balloon is arranged in the catheter; the inner diameter of the fixed ring is smaller than that of the sealing sleeve, the sealing sleeve extends from the fixed ring to one side of the balloon away from the tip, and the sealing sleeve is sleeved on the outer sides of the balloon and the catheter; the catheter is characterized in that a handle is arranged at one end, far away from the tip end, of the catheter, a sliding rail and a sliding block capable of moving along the sliding rail are arranged on the handle, and the sliding block is connected with the fixing ring through a hard and tough connecting wire arranged on the outer side of the catheter. The device can increase or decrease the length of the inflatable saccule according to different conditions, and can achieve better protection effect when the ablation is performed on the areas of different tissues of the human body.

Description

Ablation operation isolation device

Technical Field

The utility model relates to an ablation operation isolation device, and belongs to the technical field of medical appliances.

Background

The ablation technology mainly uses microwave, laser, freezing or radio frequency therapeutic instruments, uses an ablation needle to directly pierce a tumor part through puncture, and achieves the aim of killing tumor cells and treating cancers of patients by using the action of microwave or radio frequency.

The ablation technology has a certain probability of damaging normal tissues, so that an isolation protection device is needed to separate lesion tissues from normal tissues, the normal tissues are prevented from being damaged by the ablation technology, buffering between the lesion tissues and the normal tissues is provided, and the effects of completing an ablation operation and protecting the normal tissues are achieved.

Applicant searches and discovers that China patent with publication number of CN215994232U discloses an ablation operation isolation protection device, which is a common protection mode in the prior art, and normal tissues are separated and protected through an isolation balloon arranged on a catheter. However, according to the knowledge of the applicant, the isolation balloons commonly used at present are of fixed capacity, but when the regions of different tissues (such as liver, lung, thyroid, and the like) of a human body are ablated, the tissue parts and the sizes to be protected are different, and even when the regions of the same tissue are ablated, the positions and the tissue sizes to be protected are different, for example, when the liver is ablated, the positions of left and right lobes of the liver to be protected have obvious differences when the regions to be protected are ablated, and at the moment, the balloon of the fixed capacity cannot be used, so that the optimal protection effect can not be achieved on the premise of meeting the treatment requirement.

Therefore, how to ensure that better isolation and protection effects can be achieved when ablation is performed on areas of different tissues of a human body becomes a problem to be solved urgently.

Disclosure of Invention

The utility model aims to solve the technical problems that: the isolation protection device has the advantages that the good isolation protection effect can be achieved by ablating tissue areas with different positions and sizes of a human body.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: the utility model provides an ablation operation isolating device, includes the pipe, wraps up the sacculus in the pipe outside, sets up the solid fixed ring in the sacculus outside and the seal cover of being connected with the solid fixed ring, be equipped with the pointed end that is used for conveniently putting into the human body on the pipe, be equipped with the filling chamber with the sacculus intercommunication in the pipe; the inner diameter of the fixed ring is smaller than that of the sealing sleeve, the sealing sleeve extends from the fixed ring to one side of the balloon away from the tip, and the sealing sleeve is sleeved on the outer sides of the balloon and the catheter; the catheter is characterized in that a handle is arranged at one end, far away from the tip end, of the catheter, a sliding rail and a sliding block capable of moving along the sliding rail are arranged on the handle, and the sliding block is connected with the fixing ring through a hard and tough connecting wire arranged on the outer side of the catheter.

When the inflatable balloon is used, the fixed ring and the sealing sleeve press part of the balloon, so that only the other part of the balloon can be inflated after being inflated to be used for expanding human tissues to isolate normal tissues, the sliding block on the movable handle can drive the connecting wire to adjust the overlapping length and position of the sealing sleeve and the balloon, and the sealing sleeve and the fixed ring can be moved forwards or backwards through the hard and tough connecting wire, so that the inflatable balloon length is increased or reduced according to different conditions under the guidance of medical images, and a better protection effect can be achieved when the area of different tissues of a human body is ablated.

The fixing ring is used for controlling the length of the balloon extending out of the sealing sleeve and sealing the part of the balloon which is not exposed out of the sealing sleeve, so that superfluous filling liquid is prevented from entering the part of the balloon. The sealing sleeve is coated on the balloon and the catheter, so that when the sealing of the fixing ring is not firm, a large amount of filling liquid enters the unexposed balloon, the effect of isolating normal tissues is affected, and the double-insurance effect is achieved.

The inner diameters of the fixing ring and the sealing sleeve are slightly larger than the outer diameter of the balloon after the balloon is contracted, which is common knowledge of the skilled in the art, and the fixing ring is limited to have at least two functions that the inner diameter of the fixing ring is smaller than the inner diameter of the sealing sleeve: firstly, the inner diameter of the sealing sleeve is larger, so that the balloon and the catheter can conveniently pass through the sealing sleeve, and blocking or clamping is prevented; secondly, the internal diameter of the fixed ring is smaller, so that partial balloon which is not exposed out of the sealing sleeve can be better sealed.

Drawings

The utility model is further described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of an embodiment of the present utility model.

Fig. 2 is an exploded schematic view of fig. 1.

Fig. 3 is a section A-A of fig. 1.

Fig. 4 is a schematic view of a support wire.

Fig. 5 is a schematic view of a connection line.

Reference numerals: 1. a conduit; 1-1, tip; 1-2, filling the cavity; 1-3, grooves; 1-4, a supporting cavity; 2. a balloon; 3. a fixing ring; 4. sealing sleeve; 7. a connecting pipe; 8. a control valve; 9. a slide block; 10. a handle; 10-1, a sliding rail; 10-2, connecting ports; 11. a support wire; 12. a joint; 13. and (5) connecting wires.

Detailed Description

Examples

For convenience of description, the side toward the catheter tip will be referred to as "front side" and the side away from the catheter tip will be referred to as "rear side" in this embodiment.

The embodiment relates to an ablation operation isolation device, which comprises a catheter 1, a balloon 2 coated on the outer side of the catheter 1, a fixed ring 3 arranged on the outer side of the balloon 2 and a sealing sleeve 4 connected with the fixed ring 3, as shown in fig. 1-3. The sealing sleeve 4 extends to one side of the balloon 2 away from the tip 1-1 direction from the fixed ring 3, the sealing sleeve 4 is sleeved on the outer sides of the balloon 2 and the catheter 1, namely the front side of the balloon 2 is exposed out of the sealing sleeve 4 and the fixed ring 3, and the rear side of the balloon 2 is hidden into the sealing sleeve 4 and the fixed ring 3. The fixing ring 3 and the sealing sleeve 4 are used for controlling the front side extending distance of the balloon 2 and sealing the rear side balloon 2 which is not exposed by the fixing ring 3 and the sealing sleeve 4, so as to prevent excessive filling liquid from entering the unexposed rear side balloon 2. The catheter 1 is provided with a tip 1-1 which is used for being conveniently placed into a human body, and the catheter 1 is internally provided with a filling cavity 1-2 which is communicated with the balloon 2 and is used for filling the balloon 2.

In this embodiment, the inner diameter of the fixing ring 3 is smaller than the inner diameter of the sealing sleeve 4 (not shown in the figure), the inner diameter of the sealing sleeve 4 is larger, so as to facilitate the balloon 2 and the catheter 1 to pass through the sealing sleeve 4, prevent blocking or seizing, while the inner diameter of the fixing ring 3 is smaller, so that the rear balloon 2 which is not exposed out of the sealing sleeve 4 can be better sealed when filled with liquid. Preferably, the fixing ring 3 and the sealing sleeve 4 are integrally manufactured, and the thickness of the fixing ring 3 is larger than that of the sealing sleeve 4, so that the strength of the fixing ring 3 can be improved. The fixed ring 3 is preferably in a hollow frustum shape, the inner diameter of the self-sealing sleeve 4 towards the tip 1-1 direction is smaller and smaller, so that the transition between the fixed ring 3 and the sealing sleeve 4 in the aspect of dimensional change is realized, the processing and the production are convenient, and the connection strength of the fixed ring 3 and the sealing sleeve 4 is also improved.

As shown in fig. 1 and 2, a handle 10 is disposed at one end of the catheter 1 far away from the tip 1-1, a slide rail 10-1 and a slide block 9 capable of moving along the slide rail 10-1 are disposed on the handle 10, as shown in fig. 5, the slide block 9 and the fixing ring 3 are connected through a hard ductile connecting wire 13 disposed at the outer side of the catheter 1, the connecting wire 13 is preferably made of nickel-titanium alloy braided wires, and is connected with the slide block 9 and the fixing ring 3 in a welding or bonding manner, although other medical hard ductile connecting wires 13 can be adopted, and the sealing sleeve 4 and the fixing ring 3 can be moved forwards or backwards under the drive of the slide block 9 through the hard ductile connecting wire 13. The connecting wire 13 is preferably connected to the slider from the fixing ring 3 through the inside of the sealing sleeve 4, and at this time, the sealing sleeve can cover the balloon, the connecting wire and the catheter, so that the balloon, the connecting wire and the catheter are integrated, the tissue structure is prevented from being adhered to the balloon, the connecting wire and the catheter, and the balloon and the catheter are facilitated to enter and exit.

The hard and tough connecting wire 13 has a limiting effect on the fixed ring 3 and the sealing sleeve 4, but in order to better limit the fixed ring 3 and the sealing sleeve 4, preferably, a locking mechanism for fixing the sliding block on the handle 10 is arranged on the handle 10, wherein the locking mechanism is in the prior art, and various embodiments such as a buckle can be adopted, and the details are not repeated.

As a preferred embodiment, as shown in fig. 1 and 2, the handle 10 is of a hollow structure, the slide rail 10-1 is a strip-shaped gap provided on the housing of the handle 10, a handle sleeve is provided in the handle 10, the slide block 9 is fixed on the handle sleeve, and the slide block 9 is inserted into the strip-shaped gap from the handle 10 and then extends out of the handle 10.

In implementation, as shown in fig. 3, a groove 1-3 may be provided on the outer side of the catheter 1, and the connection wire 13 is sunk into the groove 1-3, so that the connection wire 13 is prevented from being damaged when the balloon 2 is sealed and extruded by the fixing ring 3, and adhesion between the connection wire and human tissues can be reduced. The number of connecting lines 13 may be plural, and accordingly, the number of grooves 1-3 may be plural, corresponding to the connecting lines 13 one by one, and two connecting lines 13 are shown in fig. 3.

The working procedure of this embodiment at the time of ablation surgery is as follows: 1) The catheter 1 is placed in a proper position near a focus by using a skin breaking knife at the surface layer opening of the skin through ultrasonic or CT guiding, then the position of a sliding block is adjusted according to actual conditions, the fixed ring 3 reaches a proper position under the driving of the sliding block 9 and a connecting wire 13, the length of the balloon 2 extending to the front side is controlled through the fixed ring 3 and a sealing sleeve 4, and the hard and tough connecting wire 13 also has a limiting effect on the fixed ring 3 and the sealing sleeve 4 and prevents the fixed ring and the sealing sleeve from sliding forwards and backwards. 2) The method comprises the steps of injecting liquid into a balloon 2 through a connecting pipe 7 and a control valve 8 by using a syringe (similar to a needleless connector, connecting filling liquid through the syringe, and ensuring that the liquid cannot flow out after the syringe is pulled out), and checking whether the supporting effect meets the isolation protection requirement or not under the assistance of CT or ultrasound; if the requirements are not met, the positions of the fixed ring 3 and the sealing sleeve 4 are adjusted for the second time through the sliding block 9, then liquid is injected into the balloon 2 again, and so on; after meeting the requirements, the ablation is inserted to ablate the part to be ablated, and after the ablation is completed, the ablation needle and the catheter 1 are withdrawn.

The method can protect normal tissues in ablation surgery of different tissues and parts, and the balloon with adjustable size is used for supporting and isolating the normal tissues, especially the tumor or the nodule in a special part is ablated, so that the protection effect on the normal tissues is more remarkable.

The present embodiment can also be modified as follows: as shown in fig. 1 and 2, a supporting cavity 1-4 is arranged in the catheter 1 along the length direction, a detachable joint 12 is arranged on the handle 10, and as shown in fig. 4, a supporting wire 11 fixedly connected with the joint 12 is arranged in the supporting cavity 1-4. The handle 10 is provided with a connecting port 10-2 for being matched with the connector 12, and can be connected in a luer connector 12 design or a buckle design and the like for fixing the supporting wire 11 and the connector 12 thereof, wherein the supporting wire 11 is used for extending into the catheter 1, improving the supportability of the catheter 1, increasing the hardness of the catheter 1 and facilitating the entering into a human body.

Claims

1. An ablation operation isolation device comprises a catheter and a balloon coated on the outer side of the catheter, wherein a tip for facilitating placement into a human body is arranged on the catheter, and a filling cavity communicated with the balloon is arranged in the catheter; the method is characterized in that: the balloon catheter comprises a balloon body, a fixed ring and a sealing sleeve, wherein the fixed ring is arranged on the outer side of the balloon body, the sealing sleeve is connected with the fixed ring, the inner diameter of the fixed ring is smaller than that of the sealing sleeve, the sealing sleeve extends from the fixed ring to one side of the balloon body, which is far away from the tip end direction, and the sealing sleeve is sleeved on the outer sides of the balloon body and the catheter;

a handle is arranged at one end of the catheter, which is far away from the tip end, and a sliding rail and a sliding block capable of moving along the sliding rail are arranged on the handle; the sliding block is connected with the fixing ring through a hard and tough connecting wire arranged on the outer side of the guide pipe.

2. The ablation surgical isolation device of claim 1, wherein: the handle is of a hollow structure, the sliding rail is a strip-shaped gap arranged on the handle shell, a handle sleeve is arranged in the handle, the sliding block is fixed on the handle sleeve, and the sliding block extends out of the handle after being inserted into the strip-shaped gap from the handle.

3. The ablation surgical isolation device of claim 2, wherein: the handle is provided with a locking mechanism for fixing the sliding block on the handle.

4. The ablation surgical isolation device of claim 1, wherein: the fixed ring is hollow frustum-shaped, and the inner diameter of the self-sealing sleeve towards the tip end direction is smaller and smaller.

5. The ablation surgical isolation device of claim 4, wherein: the thickness of the fixing ring is larger than that of the sealing sleeve.

6. The ablation surgical isolation device of claim 5, wherein: the fixing ring and the sealing sleeve are integrally manufactured.

7. The ablation surgical isolation device of claim 1, wherein: the connecting wire is made of nickel-titanium alloy braided wires.

8. The ablation surgical isolation device of claim 1, wherein: the periphery of pipe is equipped with the recess that extends along length direction, the connecting wire sets up in the recess.

9. The ablation surgical isolation device of claim 8, wherein: at least two grooves are uniformly distributed on the periphery of the catheter; correspondingly, at least two connecting wires are arranged and correspond to the grooves one by one.

10. The ablation surgical isolation device of claim 1, wherein: the catheter is characterized in that a supporting cavity is arranged in the catheter along the length direction, a detachable joint is arranged on the handle, and a supporting wire fixedly connected with the joint is arranged in the supporting cavity.