CN216702610U

CN216702610U - Puncture indwelling trocar for treating cystic cirrhosis

Info

Publication number: CN216702610U
Application number: CN202122319504.8U
Authority: CN
Inventors: 白文坤; 李晓; 孟哲颖; 任俊奕; 郑元义; 胡兵
Original assignee: Shanghai Sixth Peoples Hospital
Current assignee: Shanghai Sixth Peoples Hospital
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-06-10
Anticipated expiration: 2031-09-24

Abstract

The utility model relates to the technical field of puncture needles. A puncture indwelling trocar for treating cystic cirrhosis comprises a puncture needle hard needle core, wherein a hose is coated outside the puncture needle hard needle core, and after a puncture needle enters a sac cavity, the hard needle core is pulled out, and the hose is indwelling. The hose is of a double-layer structure and comprises an inner-layer hose for wrapping the hard needle core of the puncture needle and an outer-layer hose arranged on the outer side of the inner-layer hose, and the wall of the outer-layer hose, close to the needle point, of the outer-layer hose is thinner than other parts. After the puncture indwelling needle enters the sac cavity, the hard needle core is pulled out, a certain amount of gas or normal saline is injected between the inner layer hose and the outer layer hose to form the sac cavity, the soft indwelling tube is pulled outwards, only a small part of hoses in front of the sac cavity are indwelling in the sac cavity to prevent bending, and the sac cavity can prevent the hoses from dropping out. The utility model solves the problems that the traditional puncture needle is easy to be ectopic and separated out in the puncture liquid-extracting and medicine-injecting flushing processes, and the puncture needle tip punctures the cyst to the side wall to cause tissue damage and the like.

Description

Puncture indwelling trocar for treating cystic cirrhosis

Technical Field

The utility model relates to the technical field of puncture needles, in particular to a puncture trocar for treating cysts.

Background

The vast majority of cysts are benign diseases, and the common cysts comprise renal cyst, hepatic cyst, simple ovarian cyst, chocolate cyst, thyroid cyst and the like. The traditional treatment is surgical resection or endoscopic de-apical decompression. Under the real-time guidance of ultrasound, a fine needle is inserted into a cyst cavity through the skin, liquid in the cyst is extracted, and then cyst wall hardening medicine is injected to destroy the activity of cyst wall cells with vigorous secretion, so that the inner wall of the cyst wall loses the function of continuously secreting the liquid, thereby achieving the purposes of curing the cyst and preventing the recurrence of the cyst. Compared with the traditional surgical operation, the cyst puncture sclerotomy under the guidance of the ultrasound has the advantages of small wound, less pain, good curative effect, no scar left on the skin, accuracy, safety, low cost and the like.

In the puncture treatment operation of cysts such as liver, kidney, thyroid and the like under the guidance of ultrasonic waves, the hard puncture needle is directly contacted with the injector, and the puncture treatment fails because the puncture needle tip is displaced and is separated from the sac cavity due to repeated plugging and unplugging force. Ultrasound-guided cyst sclerotherapy has been widely used in relatively large hospitals and is technically uncomplicated. At present, deep cysts can be treated by hardening a drainage tube of a 'pigtail', but because the puncture trocar of the 'pigtail' drainage tube is expensive, the puncture trocar of the 'pigtail' drainage tube is often abandoned for use due to economic reasons when a primary hospital carries out ultrasonic guidance, and the puncture trocar of the 'pigtail' drainage tube has a complex puncture needle structure and has higher technical requirements for operators, in addition, because the drainage tube is bent in the cysts, a drainage port is easily contacted with the cyst wall, and cyst fluid is blocked to be pumped out, so the technology is not popularized and used in the primary hospital.

The influence factors of the cyst puncture sclerosis treatment effect are analyzed, and the puncture effect is obviously influenced by the escape of the puncture needle. In the clinical practical work, a common hard puncture needle is used initially, the hard puncture needle swings back and forth in the body of a patient along with breathing movement, and is very easy to dislocate or even fall out in the puncture liquid-drawing and medicine-injection flushing processes, so that the needle tip of the puncture needle is absorbed on the cyst wall frequently, the suction is difficult or the liquid is not clean, and even the puncture needle tip penetrates the cyst to the side wall to cause tissue damage.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a novel puncture indwelling trocar, which aims to solve the problems of ectopic position, separation, difficult suction caused by the fact that the needle tip of the puncture needle adsorbs cyst wall or incomplete liquid suction, and tissue damage caused by the fact that the needle tip of the puncture needle pierces the cyst to the side wall in the puncture liquid-extracting and medicine-injecting flushing processes of the traditional puncture needle. In order to achieve the purpose, the utility model adopts the following technical scheme:

a puncture indwelling trocar for treating cystic cirrhosis comprises a puncture needle hard needle core, wherein a hose is coated outside the puncture needle hard needle core to serve as a puncture indwelling drainage tube. After the puncture needle enters the capsule cavity, the hard needle core is pulled out, the hose structure reduces the partial movement amplitude of the capsule cavity in the repeated liquid pulling and inserting process of the injector, the displacement is greatly reduced, and the hose structure avoids the capsule wall from being punctured to cause the intracapsular hemorrhage. However, the cyst hardening process takes a long time, and an assistant is still needed to help fix the hose and prevent the hose from being pulled out due to the movement or repeated operation of the patient. Therefore, we have improved the structure of the hose.

Furthermore, one part of the hose is of a double-layer structure and comprises an inner-layer hose for wrapping the hard needle core of the puncture needle and an outer-layer hose arranged on the outer side of the inner-layer hose, and the wall of the outer-layer hose of the part, close to the needle point, of the outer-layer hose is thinner than the other part of the outer-layer hose so as to form a balloon structure after pressurization. Therefore, after the puncture indwelling trocar enters the balloon cavity, the hard trocar core is pulled out, a certain amount of gas or normal saline is injected between the inner layer hose and the outer layer hose, and then the thinner part of the outer layer hose is protruded to form the balloon.

Further, the saccule is formed at a position 5-10mm away from the end of the puncture indwelling drainage tube.

Furthermore, the distance between the balloon structure and the end of the puncture indwelling drainage tube is 5-10 mm.

Furthermore, the hard needle core of the puncture needle is a metal solid needle core.

Furthermore, the length of the puncture needle hard needle core is longer than that of the puncture indwelling drainage tube, and two ends of the puncture needle hard needle core extend out of a small part of the end of the puncture indwelling drainage tube so as to be conveniently inserted and extracted.

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

1. after the puncture indwelling trocar is inserted into the cyst, the hard needle core is pulled out, the moving amplitude of the indwelling part in the cyst cavity is reduced by the hose structure, the displacement is greatly reduced in the repeated suction process, and meanwhile, the tissue damage caused by the fact that the needle tip of the indwelling hard puncture needle pierces the cyst to the side wall is avoided.

2. The drainage tube is provided with the balloon structure which is arranged at a position close to the inner end of the hose, so that the drainage tube can be prevented from bending to adsorb the wall of the balloon, and the problem that the balloon liquid in the balloon cavity can not be discharged outwards due to the blockage of the drainage tube can be avoided.

3. The original scheme that the hard needle core is kept in the human body is replaced by a hose and a balloon structure to be kept in the human body, and the fixed balloon is arranged at the inner end of the hose, so that the kept hose is not easy to drop.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

The technical scheme of the utility model is further explained by combining the attached drawings.

A puncture indwelling trocar for treating cystic cirrhosis comprises a puncture needle hard trocar core 1, wherein a hose 3 is coated outside the puncture needle hard trocar core 1, and the puncture indwelling trocar is pulled out of the puncture needle hard trocar core 1 after entering a sac cavity.

One part of the hose 3 is of a double-layer structure and comprises an inner-layer hose for wrapping the hard needle core of the puncture needle and an outer-layer hose 4 arranged on the outer side of the inner-layer hose, and the wall of the outer-layer hose of the part, close to the needle point, of the outer-layer hose 4 is thinner than the other part. Thus, after the puncture indwelling needle enters the sac cavity, the puncture needle hard needle core 1 is pulled out, and a certain amount of gas or normal saline is injected between the inner layer hose and the outer layer hose 4 through the introducing port 5, so that the thinner part of the outer layer hose 4 protrudes to form the balloon structure 2.

The balloon structure 2 is arranged at a position 5-10mm away from the needle head of the puncture indwelling needle.

The puncture needle hard needle core 1 is a metal solid needle core. The length of the puncture needle hard needle core is longer than that of the puncture indwelling drainage tube, and two ends of the puncture needle hard needle core extend out of the end of the puncture indwelling drainage tube for a small part so as to be convenient to penetrate and draw out.

In conclusion, the puncture indwelling trocar provided by the utility model can effectively solve the problems of ectopic position, dislocation, difficult suction caused by the fact that the needle tip of the puncture needle adsorbs the cyst wall or incomplete liquid suction caused by the fact that the needle tip of the puncture needle punctures the cyst and damages tissues to the side wall in the puncture liquid-extracting and medicine-injecting flushing processes of the traditional puncture needle. And the structure is simple, the manufacturing cost is low, and the popularization is easy.

Claims

1. A puncture indwelling trocar for treating cystic cirrhosis is characterized in that: the puncture indwelling drainage tube comprises a puncture needle hard needle core, a hose is coated outside the puncture needle hard needle core and is used as a puncture indwelling drainage tube, and a balloon structure which can be raised after pressurization is arranged at a position, close to an end, of the puncture indwelling drainage tube.

2. The puncture indwelling trocar for the treatment of cystic cirrhosis of claim 1, wherein: one part of the puncture indwelling drainage tube is of a double-layer structure and comprises an inner-layer hose for wrapping a hard needle core of the puncture needle and an outer-layer hose arranged on the outer side of the inner-layer hose, and the wall of the outer-layer hose of the part, close to the needle point, of the outer-layer hose is thinner than the other part so as to form a balloon structure after pressurization.

3. The puncture indwelling trocar for the treatment of cystic cirrhosis of claim 2, wherein: the distance between the saccule structure and the end of the puncture indwelling drainage tube is 5-10mm, and the diameter is 5-10 mm.

4. The puncture indwelling trocar for the treatment of cystic cirrhosis of claim 2, wherein: the hard needle core of the puncture needle is a metal solid needle core.