CN113662640A

CN113662640A - Puncture indwelling drainage trocar for treating cystic cirrhosis

Info

Publication number: CN113662640A
Application number: CN202111123261.9A
Authority: CN
Inventors: 白文坤; 李晓; 任俊奕; 孟哲颖; 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: 2021-11-19

Abstract

The invention relates to the technical field of puncture needles. A puncture indwelling drainage 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, and after a puncture needle enters a sac cavity, the hard needle core is pulled out and the hose is indwelling. The puncture indwelling drainage tube is of a double-layer structure and comprises an inner layer hose for wrapping a hard needle core of a puncture needle and an outer layer hose arranged on the outer side of the inner layer hose, the wall of the outer layer hose of the part of the outer layer hose close to a needle point is thinner than other parts, so that a sacculus is formed by bulging after pressurization, the drainage tube is indwelling in puncture by pulling the soft part outwards, only a small part of hose in front of the sacculus is indwelling in a sacculus cavity, bending is prevented, and the sacculus can prevent the hose from being separated out. The invention provides a puncture indwelling trocar, which solves the problems of ectopic position, separation and tissue damage caused by that the needle tip of the puncture needle pierces the opposite side wall of cyst in the puncture liquid-drawing and medicine-injection flushing processes of the traditional puncture needle.

Description

Puncture indwelling drainage trocar for treating cystic cirrhosis

Technical Field

The invention 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.

Disclosure of Invention

In order to solve the problems, the invention 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 invention adopts the following technical scheme:

the utility model provides a drainage trocar is kept somewhere with puncture to cyst sclerosis treatment, includes pjncture needle stereoplasm noose, the outer cladding of pjncture needle stereoplasm noose has the hose as the puncture to keep somewhere the drainage tube, and the pjncture needle gets into behind the cyst chamber, extracts the stereoplasm noose, and the hose construction has reduced the inside displacement range of cyst chamber, and in the process of sucking repeatedly, its displacement reduces greatly, and is the hose construction, avoids puncturing the cyst wall and causes 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 improve the structure of the puncture indwelling drainage tube.

Furthermore, 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 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 5-10mm, and the diameter is about 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.

Furthermore, the front end of the puncture indwelling drainage tube is provided with a part of a conical surface of a needle tip of which a matching part wraps a puncture needle hard needle core, and the inner diameter of the puncture indwelling drainage tube is slightly larger than the diameter of the puncture needle hard needle core. Thus, the hard needle core of the puncture needle can be easily extracted.

Furthermore, the inner diameter of the puncture indwelling drainage tube is in clearance fit with the diameter of the hard needle core of the puncture needle.

The technical scheme of the invention 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 balloon structure is arranged at a position close to the inner end of the hose, so that the problems that a part of a drainage tube in the balloon is kept for a long time, the drainage tube is bent to adsorb the balloon wall, and the balloon liquid in the balloon cavity cannot be discharged outwards due to 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 solution of the present invention is further explained below with reference to the accompanying drawings.

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

One part of the puncture indwelling drainage tube 3 is of a double-layer structure and comprises an inner-layer hose for wrapping a hard needle core of a 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 of the outer-layer hose. 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 hard needle core 1 of the puncture needle 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 1 extend out of the end of the puncture indwelling drainage tube 3 for a small part so as to be convenient to penetrate and draw out. The front end of the puncture indwelling drainage tube 3 is provided with a matching part 6 for wrapping a part of the conical surface of the needle tip of the puncture needle hard needle core 1, and the inner diameter of the puncture indwelling drainage tube 3 is slightly larger than the diameter of the puncture needle hard needle core 1. So that the hard core 1 of the puncture needle can be easily extracted.

In conclusion, the puncture indwelling trocar provided by the invention 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. The utility model provides a cyst sclerosis treatment is with puncture indwelling drainage trocar which characterized in that: comprises a puncture needle hard needle core, and a hose is coated outside the puncture needle hard needle core to be used as a puncture indwelling drainage tube.

2. The puncture indwelling drainage trocar for the treatment of cystic cirrhosis of claim 1, wherein: the puncture indwelling drainage tube is provided with a balloon structure which can form a bulge after being pressurized at a position close to the end head.

3. The puncture indwelling drainage 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.

4. The puncture indwelling drainage 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 about 5-10 mm.

5. The puncture indwelling drainage 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.

6. The puncture indwelling drainage trocar for the treatment of cystic cirrhosis of claim 2, wherein: the length of the hard needle core of the puncture needle is longer than that of the puncture indwelling drainage tube.

7. The puncture indwelling drainage trocar for the treatment of cystic cirrhosis of claim 2, wherein: the front end of the puncture indwelling drainage tube is provided with a part of a conical surface of a needle tip end of which a matching part wraps a puncture needle hard needle core, and the inner diameter of the puncture indwelling drainage tube is larger than the diameter of the puncture needle hard needle core.

8. The puncture indwelling drainage trocar for the treatment of cystic cirrhosis of claim 7, wherein: the inner diameter of the puncture indwelling drainage tube is in clearance fit with the diameter of the puncture needle hard needle core.