阅读说明：本技术 内窥镜头部***保护装置 (Endoscope head insertion protection device ) 是由 刘戈平 韦锡义 韦锡波 于 2019-12-14 设计创作，主要内容包括：一种内窥镜头部插入保护装置,设置在内窥镜工作管道内,它由一锥形膨胀体和膨胀管道组成,膨胀体充气或充液后,其头部膨胀为圆锥形,并且覆盖内窥镜的镜头；膨胀体放气或放液后,回缩到内窥镜工作通道内,暴露出内窥镜的镜头。它通过透软且可回缩的膨胀体设计,保护了内窥镜工作通道的前端镜头,并且其锥形头部设计,有利于工作通道直接进入到尿路中,取代现在手术中,需要采用引导丝辅助内窥镜进入和退出的繁琐手术过程。(An endoscope head insertion protection device is arranged in an endoscope working pipeline and consists of a conical expansion body and an expansion pipeline, wherein after the expansion body is inflated or filled with liquid, the head of the expansion body is expanded to be conical and covers a lens of an endoscope; after the inflation body is deflated or drained, the inflation body retracts into the working channel of the endoscope to expose the lens of the endoscope. It has protected endoscope working channel's front end camera lens through the design of the inflation body that passes through soft and can retract to its toper head design is favorable to the working channel directly to enter into the urinary tract, replaces in the present operation, need adopt the loaded down with trivial details operation process that the guide wire assisted the endoscope got into and exited.)

1. An endoscope head insertion protection device is arranged in an endoscope working pipeline and is characterized by comprising a conical expansion body and an expansion pipeline, wherein after the expansion body is inflated or filled with liquid, the head of the expansion body is expanded to be conical and covers a lens of an endoscope; after the inflation body is deflated or drained, the inflation body retracts into the working channel of the endoscope to expose the lens of the endoscope.

2. The endoscope head insertion protection device of claim 1, wherein: the expansion body comprises a conical head, a step section and a contraction section.

3. The endoscope head insertion protection device of claim 2, wherein: the expansion body comprises a cylindrical middle section arranged between a conical head and a step section.

4. The endoscope head insertion protection device of claim 2, wherein: after the expansion body is expanded, the outer diameter of the step section is larger than that of the working channel of the endoscope; the inner diameter of the step section is smaller than the inner diameter of the endoscope working channel and larger than the outer diameter of the endoscope lens.

5. The endoscope head insertion protection device of claim 1, wherein: one or a plurality of liquid discharge grooves are formed in the cylindrical middle section of the expansion body.

6. The endoscope head insertion protection device of claim 1, wherein: the expansion body is made of transparent materials.

Technical Field

The invention relates to medical equipment, in particular to an expansion protection device used on the upper front part of a ureter endoscope lens.

Background

The ureteroscope is usually used in urinary tract and renal examination and urinary tract lithotripsy operation, and is a thin scope with the diameter of about 3mm, which is inserted into a ureter through a urethra and a bladder to smash and take out ureteral stones or kidney stones. It utilizes the natural urinary system cavity of human body, does not make any incision on the human body, and is a pure urinary surgery endoscopic minimally invasive surgery. Is suitable for various ureteral calculi and partial kidney calculi with ineffective conservative treatment. Compared with open surgery, ureteroscope lithotripsy has the advantages of small injury, light pain, quick recovery and the like. However, the operation steps are complicated, and the operation requirements of doctors are high.

Because the camera of the head is a solid hard object, if the endoscope directly enters human body pipeline tissues such as a urinary tract and the like, the head of the endoscope needs to expand the urinary tract, and the pricking feeling of entering foreign matters can be brought to the human body. In order to reduce pain and facilitate the endoscope to enter the urinary system, in the prior operation, a thin guide wire is firstly penetrated, then a guide sheath is brought in, then the flexible ureteroscope is placed in the guide sheath, and the guide wire is taken out. The process is complicated, and the operation time is prolonged.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: a flexible conical head body with variable volume is added at the head of the existing endoscope working pipeline, so that the lens of the endoscope is protected when the endoscope enters the urinary tract, and the endoscope head body can enter a human body conveniently.

The invention adopts the technical scheme for solving the problems as follows: an endoscope head insertion protection device is arranged in a working pipeline of an endoscope and is characterized by comprising a conical expansion body and an expansion pipeline, wherein after the expansion body is inflated or filled with liquid, the head of the expansion body is expanded to be conical and covers a lens of the endoscope; after the inflation body is deflated or drained, the inflation body retracts into the working channel of the endoscope to expose the lens of the endoscope.

The expansion body comprises a conical head, a step section and a contraction section.

The expansion body comprises a cylindrical middle section arranged between a conical head and a step section.

After the expansion body is expanded, the outer diameter of the step section is larger than that of the working channel of the endoscope; the inner diameter of the step section is smaller than the inner diameter of the endoscope working channel and larger than the outer diameter of the endoscope lens.

One or a plurality of liquid discharge grooves are formed in the cylindrical middle section of the expansion body.

The expansion body is made of transparent materials.

The invention is a creative improvement on the existing urinary tract endoscope, protects the front-end lens of the working channel of the endoscope by the design of a soft and retractable expansion body, and the design of the conical head part of the endoscope is beneficial to the direct entry of the working channel into the urinary tract to replace the complicated operation process of the entry and exit of a guide wire.

After the expansion body is inflated or filled with liquid, a soft and tough conical head is formed, and the expansion body is lubricated by human body lubricating liquid and the like, so that the expansion body is comfortable when entering a human body, and the pricking feeling caused by the guide wire can not be generated.

After reaching the proper working position, the expansion body is deflated or discharged to form a smaller capsule body, and the capsule body can be retracted to the rear part of the endoscope along the working channel of the endoscope without blocking the operation of the endoscope.

The expansion body is provided with the step section, the step section can be expanded to completely shield the head of the working channel of the endoscope, so that the direct frictional contact between the lens of the endoscope and the human body is effectively avoided, and the hardness of the working channel can be utilized to support and provide the pushing force for pushing the expansion body into the human body.

One or more drainage grooves are formed in the cylindrical middle section of the expansion body, and when the expansion body is in the urethra, residual body fluid and gas in the urethra can flow out of the head of the expansion body to a working channel behind the expansion body through the drainage grooves and are discharged out of the body along the urethra. Avoid the pressure difference before and after the liquid accumulation or the expansion body, so that the human body can generate the distending pain feeling.

Drawings

Fig. 1 is a schematic structural diagram of an expansion body protecting an endoscope lens and a working channel.

Fig. 2, an enlarged view of the expansion body portion.

FIG. 3 is a schematic view of the structure of the inflation body and working channel during deflation or tapping.

Fig. 4 is a working state diagram of the endoscope after deflation and the lens is extended.

FIG. 5 shows the structure of the expansion body with drainage channels.

Wherein 1 is an expansion body, 2 is an endoscope working channel, and 3 is an endoscope lens.

11 is a conical head, 12 is a cylindrical middle section, 13 is a step section, 14 is a contraction section, 15 is an expansion body connecting pipe, and 16 is a liquid discharge tank.

Detailed Description

The present invention is described in further detail below with reference to the attached drawing figures.

The invention relates to an endoscope head insertion protection device, which is inserted into a working channel of an endoscope and is inflated or filled with liquid to form a soft conical expansion bag covering the endoscope and the head of the working channel of the endoscope. Protects the lens of the endoscope, isolates the lens and the working channel from the urinary tract of a human body, and prevents the lens and the working channel from directly rubbing and contacting to generate burning pain.

As shown in fig. 1 and 2, the endoscope head insertion protecting device is an inflatable body. It at least comprises a conical head part, a step section and a contraction section, wherein the tail part of the contraction section is connected with the expansion body pipe body. The cylindrical middle section can be increased as required, and the length of the cylindrical middle section is set to be proper, so that the head of the working channel is protected, and the head is prevented from being in direct contact with human tissues.

Before the endoscope working channel enters the urinary tract of a human body, the expansion body is inflated or filled with liquid to form a state shown in figure 1, and the outer diameter of the step section is larger than that of the endoscope working channel; the inner diameter of the step section is smaller than the inner diameter of the endoscope working channel and larger than the outer diameter of the endoscope lens. The structure can ensure that the expansion body is always positioned at the front end of the working channel of the endoscope in the process of entering the urinary tract of a human body, and the expansion body is conveyed to the focus in the human body by utilizing the hardness of the working channel.

When the front end of the working channel of the endoscope reaches the focus as shown in fig. 3, the expansion body is softened and loosened by air or liquid discharge, and the step surface of the expansion body loses hardness and does not prop against the front end of the working channel any more; after deflation or liquid discharge is finished, the connecting tube body of the expansion body is pulled, and the expansion body can be retracted to the rear of the endoscope lens.

And finally, the lens is positioned at the front end of the working channel by forward movement of the endoscope, and the focus is observed to perform urinary tract operations such as flushing, negative pressure suction and the like.

The expansion body is provided with a connecting pipe passage independently, can share a pipeline with the endoscope, or can be arranged in a negative pressure suction pipe of the existing endoscope channel, and is flexible and convenient to arrange. The inflatable endoscope forms a conical surface after being inflated, is soft and flexible, and reduces pricking pain and pricking pain generated when the endoscope enters a human body through a working channel of the endoscope when entering the human body. The expansion body is made of transparent materials and has light transmittance, the endoscope has light sensation after the expansion body, and the endoscope can assist the head of the working channel to enter a human body.

In addition, in order to avoid urinary hydrops, balance air pressure in front of and behind the expansion body and avoid bladder distending pain, one or more liquid discharge grooves are formed in the cylindrical middle section of the expansion body, so that in the process of entering the expansion body, hydrops or gas in the expansion body can be discharged to the back of the expansion body along the liquid discharge grooves, and discomfort of a patient is reduced.