Endoscope head insertion protection device

Abstract

An endoscope head insertion protection device is arranged in the working channel of the endoscope. It consists of a conical expansion body and an expansion channel. After the expansion body is inflated with air or liquid, its head expands into a cone shape and covers the endoscope lens; after the expansion body is deflated with air or liquid, it retracts into the working channel of the endoscope to expose the endoscope lens. It protects the front end lens of the working channel of the endoscope through the design of a soft and retractable expansion body, and its conical head design facilitates the working channel to directly enter the urinary tract, replacing the cumbersome surgical process in the current surgery that requires the use of a guide wire to assist the endoscope in entering and exiting.

Description

Technical Field

[0001] The invention relates to a medical device, in particular to an expansion protection device used for the front of a ureteral endoscope lens. Background Art

[0002] Ureteroscopy is usually used in urinary tract and renal tract examination and urinary tract lithotripsy. It is a thin mirror with a diameter of about 3mm, which is inserted into the ureter through the urethra and bladder to crush and remove ureteral stones or kidney stones. It uses the natural urinary system cavity of the human body and does not make any incisions on the body. It is a pure urological laparoscopic minimally invasive surgery. It is suitable for various ureteral stones that are ineffective for conservative treatment, as well as some kidney stones. Compared with open surgery, ureteroscopic lithotripsy has the advantages of less damage, less pain, and faster recovery. However, the operation steps are cumbersome and require high operation of the doctor.

[0003] Since the camera head is a solid hard object, if the endoscope directly enters the urinary tract and other human body pipes and tissues, the head of the endoscope needs to expand the urethra, which will cause a stinging sensation of foreign matter entering the human body. In order to reduce the pain and facilitate the endoscope to enter the urinary system, in current surgery, a thinner guide wire is used to penetrate first, then a guide sheath is brought in, and then a ureteroscope is placed in the guide sheath to remove the guide wire. The process is relatively complicated and prolongs the operation time. Summary of the invention

[0004] The technical problem to be solved by the present invention is: to add a soft conical head body with a variable volume to the head of the existing endoscope working channel, so as to protect the endoscope lens when the endoscope enters the urinary tract and facilitate the endoscope lens body to enter the human body.

[0005] The technical solution adopted by the present invention to solve the above-mentioned problem is: an endoscope head insertion protection device is arranged in the working channel of the endoscope, and is characterized in that it consists of a conical expansion body and an expansion channel. After the expansion body is inflated with air or liquid, its head expands into a cone shape and covers the lens of the endoscope; after the expansion body is deflated with air or liquid, it retracts into the working channel of the endoscope to expose the lens of the endoscope.

[0006] The expansion body comprises a conical head, a stepped section and a contracted section.

[0007] The expansion body comprises a conical head and a cylindrical middle section arranged between the step sections.

[0008] After the expansion body is expanded, the outer diameter of the step section is larger than the outer diameter 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.

[0009] One or more drainage grooves are arranged on the cylindrical middle section of the expansion body.

[0010] The expansion body is made of transparent material.

[0011] The present invention is a creative improvement on the existing urinary endoscope. It protects the front end lens of the endoscope working channel through the design of a soft and retractable expansion body, and its conical head design facilitates the working channel to directly enter the urinary tract, replacing the cumbersome surgical process of guide wire entry and exit.

[0012] After the expandable body is inflated with air or liquid, a relatively soft and resilient conical head is formed. After being lubricated by human body lubricants, it is more comfortable when entering the human body and will not produce the tingling sensation caused by the guide wire.

[0013] After reaching a suitable working position, the expansion body shrinks into a smaller capsule after deflation of air or fluid, and can be retracted to the rear of the endoscope along the working channel of the endoscope without blocking the operation of the endoscope.

[0014] The expansion body is provided with a step section, which can expand to completely cover the head of the endoscope working channel, which can effectively avoid direct friction contact between the endoscope lens and the human body, and can use the hardness of the working channel to support and provide a pushing force for the expansion body to enter the human body.

[0015] One or more drainage grooves are arranged on the cylindrical middle section of the expansion body. When the expansion body is in the urethra, the residual body fluid and gas in the urethra can flow out from the head of the expansion body to the working channel behind the expansion body through the drainage grooves and be discharged out of the body along the urethra, thus avoiding the accumulation of fluid or the pressure difference before and after the expansion body, which may cause distension and pain in the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 , schematic diagram of the structure of the expansion body protecting the endoscope lens and working channel.

[0017] Figure 2 , an enlarged view of the expanded body part.

[0018] Figure 3 , schematic diagram of the structure of the expansion body and the working channel during the process of deflation or liquid release.

[0019] Figure 4 , The working status diagram of the endoscope lens after deflation and extension.

[0020] Figure 5 , an expansion body structure with a drainage groove.

[0021] Among them, 1 is the expansion body, 2 is the endoscope working channel, and 3 is the endoscope lens.

[0022] 11 is a conical head, 12 is a cylindrical middle section, 13 is a stepped section, 14 is a contraction section, 15 is an expansion body connecting pipe, and 16 is a drainage trough. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0024] The present invention is an endoscope head insertion protection device, which is inserted into the working channel of the endoscope and is inflated with air or liquid to form a soft conical expansion bag covering the endoscope and the head of the endoscope working channel. The endoscope lens is protected and the lens and the working channel are isolated from the human urinary tract to prevent them from direct friction contact and burning pain.

[0025] like Figure 1 and Figure 2 As shown, the endoscope head insertion protection device is an expansion body. It includes at least three parts: a conical head, a stepped section, and a contraction section. The tail of the contraction section is connected to the expansion body tube. A cylindrical middle section can be added as needed, and a suitable length of the cylindrical middle section can be set to protect the head of the working channel and prevent it from directly contacting human tissue.

[0026] Before the endoscope working channel enters the human urinary tract, the expansion body is inflated with air or liquid to form Figure 1 In the state shown, the outer diameter of the step section is larger than the outer diameter 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. This structure enables the expansion body to always be located at the front end of the endoscope working channel during the process of entering the human urinary tract, and to be delivered to the lesion inside the human body by utilizing the hardness of the working channel.

[0027] like Figure 3 As shown, when the front end of the working channel of the endoscope reaches the lesion, the expansion body becomes soft and loose by deflating or releasing fluid. At this time, the step surface of the expansion body loses its hardness and no longer supports the front end of the working channel. When the deflating or releasing of fluid is completed, the connecting tube body of the expansion body is pulled, and the expansion body can be retracted to the back of the endoscope lens.

[0028] Finally, the endoscope is moved forward so that the lens is located at the front end of the working channel, the lesion is observed, and urinary tract surgeries such as flushing and negative pressure suction are performed.

[0029] In addition to being separately provided with a connecting tube body passage, the expansion body can also share a pipeline with the endoscope, or can be provided in the negative pressure suction tube of the existing endoscope channel, and the setting is flexible and convenient. After expansion, it forms a cone surface, which is soft and tough. When entering the human body, it reduces the stinging pain and the stinging pain caused by the endoscope working channel entering the human body. The expansion body is made of transparent material with light transmittance. The endoscope is behind the expansion body and has a sense of light. The endoscope can assist the head of the working channel to enter the human body.

[0030] In addition, in order to avoid urinary tract fluid accumulation, balance the air pressure before and after the expansion body, and avoid bladder distension and pain, the present invention also provides one or more drainage grooves on the cylindrical middle section of the expansion body, so that during the entry of the expansion body, the accumulated fluid or gas in the body can be discharged to the rear of the expansion body along the drainage groove, reducing the patient's discomfort.

Claims

1. An endoscope head insertion protection device, arranged in an endoscope working channel, characterized in that: It consists of a conical expansion body and an expansion pipe. When the expansion body is inflated with air or liquid, its head expands into a cone and covers the endoscope lens. When the expansion body is deflated with air or liquid, it retracts into the working channel of the endoscope, exposing the endoscope lens. The expansion body comprises a conical head, a stepped section and a contracted section; The expansion body comprises a conical head and a cylindrical middle section arranged between the stepped sections; After the expansion body is expanded, the outer diameter of the step section is larger than the outer diameter 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 tail of the contraction section is connected to the expansion body; The tail of the contraction section is located on one side of the lens of the endoscope; One or more drainage grooves are arranged on the cylindrical middle section of the expansion body.

2. The endoscope head insertion protection device according to claim 1, characterized in that: The expansion body is made of transparent material.

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