CN207870859U - The extension fixture of endoscope-use - Google Patents

Abstract

This application involves a kind of extension fixtures of endoscope-use.Specifically, this application involves a kind of extension fixtures of endoscope-use comprising：Hollow cylindrical ontology, the diameter of the hollow wall of the hollow cylindrical ontology are matched with the outer diameter of for use endoscope lens end so that are mounted with that the endoscope lens end of the extension fixture is not fallen off after going deep into body cavities；Arm, including 4~12 are strutted, shape struts and is uniformly distributed one circle of setting radially outward in the outside of hollow cylindrical ontology upper end so that is mounted with that the endoscope lens end of the extension fixture can strut cavity organization after going deep into body cavities.The sterile extension fixture of the application endoscope-use is coordinating effect when can effectively improve disease examination and treatment when endoscope use.

Description

Dilator for endoscope

Technical Field

The utility model belongs to the technical field of medical instrument product, a device that endoscope was used is related to, especially relate to an aseptic expanding unit that endoscope was used, the device can effectual improvement disease examination and the effect when treating when the cooperation endoscope uses.

Background

An endoscope is a commonly used medical instrument and consists of a bendable part, a light source and a group of lenses. Enter the human body through natural orifices of the human body or small incisions made by operation. When in use, the endoscope is introduced into the pre-examined organ, and the change of the relevant part can be directly observed. The quality of the image directly affects the using effect of the endoscope and also marks the development level of the endoscope technology.

The first endoscope in the world was created by the french doctor dessomiao in 1853. Endoscopes are a common medical device. Comprises a head end, a bending part, an inserting part, an operating part and a light guide part. When in use, the light guide part of the endoscope is firstly connected to a matched cold light source, then the insertion part is introduced into the organ to be examined, and the control operation part can directly peep the pathological changes of the relevant part.

The earliest endoscopes were applied to rectal examination. The doctor inserts a hard tube into the anus of the patient and observes the pathological changes of the rectum by means of the brightness of the candle. This method has limited diagnostic data available, is painful for the patient, and poses a significant risk of perforation due to the rigid apparatus. Despite these disadvantages, endoscopy continues to be used and developed, and increasingly many different uses and types of instruments are being designed.

In the long history, a laryngoscope, a funduscope, a cystoscope, a bronchoscope, an esophagoscope, a proctoscope, a thoracoscope, a gastroscope, an abdominal scope, a ventriculoscope and the like appear in succession clinically. In 1963, japan began to produce fiberoptic biopsy devices, which had special biopsy forceps capable of taking appropriate pathological materials and low risk. In 1965, fibercolonoscopes were made, and the scope of examination for lower gastrointestinal diseases was expanded. In addition, the fiberoptic endoscope can be used for in vivo assays, such as measuring in vivo temperature, pressure, displacement, spectral absorption, and other data. The 20 th century and the 70 th century are the treatments of the endoscope by the laser technology, and gradually become one of the means for treating the gastrointestinal hemorrhage by the endoscope. In the later 80 s, the endoscope ultrasonic technology was successfully developed, and the new development of combining the advanced ultrasonic technology and the endoscope greatly increases the accuracy of the lesion diagnosis.

Medical endoscopes are classified according to their development and imaging configuration: can be broadly divided into 3 categories: hard tube endoscopes, optical fiber (flexible tube) endoscopes, and electronic endoscopes.

the endoscope for the alimentary canal comprises 1 an endoscope for the alimentary canal, a rigid tube esophagoscope, a fiber esophagoscope, an electronic esophagoscope, an ultrasonic electronic esophagoscope, a fiber gastroscope, an electronic gastroscope, an ultrasonic electronic gastroscope, a fiber duodenoscope, an electronic duodenoscope, a fiber enteroscope, an electronic enteroscope, a fiber colonoscope, an electronic colonoscope, a fiber sigmoidoscope and a proctoscope 2, and an endoscope for the respiratory system, namely a rigid tube laryngoscope, a fiber laryngoscope, an electronic laryngoscope, a fiber bronchoscope, an electronic bronchoscope, a thoracoscope and a mediastinoscope 3, an endoscope for a peritoneal cavity, namely a rigid tube type endoscope, an optical fiber type laparoscope and an electronic manual laparoscope 4, an endoscope for the biliary tract, a rigid tube type choledochoscope, a fiber choledochoscope, an electronic choledochoscope and a primary and secondary choledochoscope, an endoscope for the urinary system, a colposcope and a female arthroscope, a ureteroscope, a bladder endoscope for the examination, a bladder endoscope for the ureter, a bladder endoscope for the operation, a bladder endoscope for the urinary system, a bladder endoscope and a ureter, a bladder endoscope for the female arthroscope, a ureter, a bladder endoscope for the urinary system, a ureter, a bladder endoscope for the.

The fiber endoscope system consists of an endoscope body and a cold light source, wherein two optical fiber bundles, namely a light beam, are arranged in the endoscope body and are used for transmitting light rays generated by the cold light source to the surface of an observed object and illuminating the surface of the observed object; the other is called as an image bundle, tens of thousands of optical fibers with the diameter of less than 1 micron are arranged into a bundle in a row-by-row sequence, one end of each optical fiber is aligned with an ocular lens, the other end of each optical fiber is aligned with the surface of an observed object through an objective lens, and a doctor can visually see the condition of the surfaces of the visceral organs through the ocular lenses, so that the condition of an illness can be diagnosed accurately in time. For example, with the aid of an endoscopist, the physician can observe ulcers or lesions in the stomach, and can therefore prescribe an optimal treatment. The fiber bundle for conducting image forms the core part of fiber endoscope, which is composed of tens of thousands of extremely fine glass fibers, and according to the optical total reflection principle, the outside of all the glass fibers must be covered with a film with lower refractive index to ensure the total reflection of the light rays conducted by all the inner core fibers. The transmission of a single fiber can only generate one light spot, so that a large number of fibers are required to be bundled to see an image, and the position of each fiber arranged at the two ends is required to be the same to transmit the image to the other end to form the same image, namely, an image guide bundle. Fiberscopes usually have two glass fibre tubes, one through which light enters the body and the physician observes through the other tube or through a camera. In 1981, the endoscope ultrasonic technology was successfully developed, and the new development of combining the advanced ultrasonic technology and the endoscope greatly increases the accuracy of pathological change diagnosis. The operation can be performed by using an endoscope and a laser, and the optical fiber of the endoscope can convey a laser beam, cauterize a neoplasm or tumor and seal a bleeding blood vessel.

With the development of electronics and digital video technology, an electronic endoscope appears in 80 years, so that an optical fiber image transmission is not needed, a photosensitive integrated circuit camera system is replaced, the displayed image has high quality, high brightness and large size, finer lesions can be detected, the outer diameter of the electronic endoscope is thinner, the image is clearer and more visual, and the operation is convenient. Some endoscopes, and even micro integrated circuit sensors, feed observed information back to the computer. It not only can obtain the diagnosis information of tissue organ morphology, but also can measure various physiological functions of tissue organ. The structure of the electronic endoscope is basically the same as that of the fiberscope, so that the CCD is simply understood to replace an image guide bundle, and the fiberscope cannot reach multiple functions. The biggest difference between electronic endoscopes and fiberscopes is the replacement of the fiberoptic image-carrying bundle with a CCD device called a miniature image sensor.

⑶ the ⑶ endoscope ⑶ has ⑶ the ⑶ main ⑶ application ⑶ range ⑶ of ⑶ gastrointestinal ⑶ diseases ⑶ including ⑶ chronic ⑶ esophagitis ⑶, ⑶ esophageal ⑶ varices ⑶, ⑶ esophageal ⑶ foraminal ⑶ hernia ⑶, ⑶ esophageal ⑶ leiomyoma ⑶, ⑶ esophageal ⑶ cancer ⑶, ⑶ cardiac ⑶ carcinoma ⑶ and ⑶ the ⑶ like ⑶ of ⑶ esophagus ⑶, ⑶ chronic ⑶ gastritis ⑶, ⑶ gastric ⑶ ulcer ⑶, ⑶ benign ⑶ gastric ⑶ tumor ⑶, ⑶ gastric ⑶ carcinoma ⑶, ⑶ duodenal ⑶ ulcer ⑶ and ⑶ duodenal ⑶ tumor ⑶ of ⑶ stomach ⑶, ⑶ small ⑶ intestine ⑶ tumor ⑶, ⑶ smooth ⑶ muscle ⑶ tumor ⑶, ⑶ sarcoma ⑶, ⑶ polyp ⑶, ⑶ lymphoma ⑶, ⑶ inflammation ⑶ and ⑶ the ⑶ like ⑶, ⑶ large ⑶ intestine ⑶ nonspecific ⑶ ulcerative ⑶ colitis ⑶, ⑶ Crohn ⑶' ⑶ s ⑶ disease ⑶, ⑶ chronic ⑶ colitis ⑶, ⑶ colon ⑶ polyp ⑶, ⑶ large ⑶ intestine ⑶ and ⑶ the ⑶ like ⑶. ⑶

In the existing endoscope detection and/or operation treatment process using the endoscope, the diameter of the objective lens head end of the endoscope is usually the same as that of the bendable pipe, the diameter of the objective lens head end of the endoscope is in the range of 0.3-3 cm, usually in the range of 0.3-1.5 cm according to different use occasions, for example, the outer diameter of a paranasal sinuscope is usually phi 3mm and phi 4mm, the outer diameter of a laryngoscope is usually phi 5mm, phi 8mm and phi 10mm, and the outer diameter of an enteroscope is usually phi 5mm, phi 10mm, phi 12mm and phi 15 mm.

Generally speaking, during the process of advancing or retracting the objective lens head of the endoscope, there is usually a cavity tissue tightly wrapped on the objective lens head, which may affect the function of each functional element of the objective lens head, such as the searchlighting of the light source element of the objective lens head, the observation of the camera of the objective lens head, and so on.

Therefore, there is a need in the art for a device that overcomes the problems encountered with endoscopes, and in particular with the objective lens tip, during use, and in particular for providing an extension device for endoscopes.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a device, in particular an extension device for an endoscope, which overcomes the problems associated with the use of endoscopes, in particular the head end of the objective lens, and which has surprisingly been found to be easy to implement when using the design of the present application. The utility model can be completed.

To this end, according to a first aspect of the present invention, there is provided an endoscope expansion device comprising:

the diameter of the hollow inner wall of the hollow cylindrical body is matched with the outer diameter of the objective lens end of the endoscope to be used, so that the objective lens end of the endoscope provided with the expansion device cannot slide down after penetrating into a human body cavity;

the opening arms comprise 4-12 pieces, the outer side of the upper end of the hollow cylindrical body is radially opened outwards, and a circle of opening arms is uniformly distributed, so that the end of the endoscope objective lens provided with the expansion device can open the cavity tissue after penetrating into the human cavity.

The "upper end" is relative to the hollow cylindrical body, and clinical application can be performed when the endoscope objective lens tip is inserted from the lower end of the hollow cylindrical body until the front end of the endoscope objective lens tip is substantially flush with the upper end of the hollow cylindrical body.

The endoscope expansion device according to the first aspect of the present invention is characterized in that the spreading arms include 6 to 10, for example, 6, 7, 8, 9, and 10. Generally, an 8-bar spreading arm design is preferred.

The endoscope extension device according to the first aspect of the present invention, wherein the diameter of the extension device is 2-5 cm, for example, 2.5-4 cm, after the spreading arms are fully spread.

The endoscope expansion device according to the first aspect of the present invention is characterized in that the hollow cylindrical body and the arms are integrally formed.

According to the utility model discloses an extension fixture that endoscope was used, its characterized in that, it is made by soft plastics material, and this soft plastics material is enough to make the endoscope objective end of having installed this extension fixture can not the landing after going deep into human body chamber way.

according to the present invention, the dilator device for endoscope is characterized in that it is made of a soft plastic material which makes it possible to swing the distraction arm upwards (i.e. in the retraction process) and downwards (i.e. in the advancement process) after penetrating into the body lumen, in order to measure the acute angle formed between the straight line connecting between the top of the distraction arm to the root of the distraction arm and the axis of the hollow cylindrical body, the acute angle at which the distraction arm is tilted towards the front of the endoscope objective tip (i.e. the direction of retraction of the distraction arm in the body lumen, which can be referred to as the tilt-up angle or replaced by the letter α in the present application), the distraction arm-down-swing angle (i.e. the direction of advancement of the distraction arm in the body lumen, which is tilted towards the rear of the endoscope objective tip, which can be referred to as the tilt-down angle or replaced by the letter β in the present application), α is 1.1 to 6 times of β, for example 1.5 to 4.5, and the most effective as the above-mentioned endoscope device, and the above-up-down-swing angle can be considered in the present invention.

the present invention according to a first aspect thereof is an endoscope extension device, wherein when used in combination with an endoscope, the angle α is in the range of 50 to 90 °.

the endoscope expander according to the first aspect of the present invention is characterized in that when used in combination with an endoscope, the angle α is in the range of 60 to 90 °.

the present invention according to a first aspect thereof is an endoscope extension device, wherein when used in combination with an endoscope, the angle β is in the range of 15 to 45 °.

the present invention according to a first aspect thereof is an endoscope extension device, wherein when used in combination with an endoscope, the angle β is in the range of 20 to 40 °.

The endoscope dilation device according to the first aspect of the present invention is characterized in that one or more holes are provided in the middle of the hollow cylindrical body. When setting up these holes, can make the internal diameter of cavity cylindric body suitable little to these holes make cavity cylindric body have higher elasticity, make endoscope objective lens end when inserting cavity cylindric body can be with stronger elasticity parcel in endoscope objective lens end periphery, strengthen the two degree of combining, reduce the probability that this application expanding unit drops from endoscope objective lens end.

the endoscope expansion device according to the first aspect of the present invention is characterized in that, when no external force is applied, each of the spreading arms is radially spread outward perpendicular to the hollow cylindrical body, or the spreading arms slightly swing downward so that the β angle is in the range of 75 to 90 °.

the endoscope expansion device according to the first aspect of the present invention is characterized in that, when no external force is applied, each of the spreading arms is radially spread outward perpendicular to the hollow cylindrical body, or the spreading arms slightly swing downward so that the β angle is in the range of 80 to 90 °.

The endoscope extension device according to the first aspect of the present invention is provided in a sterile form.

The present invention according to a first aspect thereof is an endoscopic stent which is provided in a sterile form and stored in a sterile condition.

The endoscope expansion device according to the first aspect of the present invention is a disposable endoscope expansion device.

The endoscope stent according to the first aspect of the present invention is used for enteroscopy and/or treatment.

Any technical feature possessed by any one aspect of the present application or any embodiment of that one aspect may be equally applicable to any other embodiment or any embodiment of any other aspect, so long as they are not mutually contradictory, although appropriate modifications may be made to the respective features as necessary when applicable to each other. Various aspects and features of the disclosure are described further below.

All documents cited in this application are incorporated herein by reference in their entirety and to the extent that the meaning of such documents is inconsistent with this application, the express disclosure of this application controls. Further, the various terms and phrases used herein have the ordinary meaning as is known to those skilled in the art, and even so, it is intended that the present application be more fully described and interpreted herein, to the extent that such terms and phrases are not inconsistent with this known meaning and from the context in which such terms and phrases are expressed.

The dilation device of the present application can be adapted for use with a variety of endoscopes. Some performance characteristics and technical effects of the stent are mainly illustrated by taking an enteroscope as an example.

The stent, which may be a sterile endoscopic stent for disposable use, is fitted over the endoscope objective tip, and may therefore also be referred to as a sleeve in this application. The stent of the present application is capable of providing a clear view of the entire lumen, such as the colon. The single row of long arms can be gently everted and flattened compared to unassisted colonoscopy, and additionally can improve the detection rate of statistically and clinically relevant adenomas.

the present dilation device is disposable and can be easily pushed to the end of the colon during examination, and its unique distraction arm (also referred to herein as the hinge arm) will lie on the surface of the handle of the enteroscope (e.g., β angle in the range of 15-45 deg., such as 20-40 deg.) as it is pushed forward to create a smooth, low friction force.

The stent of the present application also allows more tips to be advanced to control the entire colon for intubation, while improving the treatment of the curved portion. The stent of the present application provides an early and controlled view of the upstream surface of the large pleat, thus eliminating the need for repeated cannulation. The stent of the present application allows for detailed examination of the inside of the colon in flexion by preventing sudden slippage back. The folded sigmoid colon may be opened with gentle separation of the hinged arms detected and a clear view of the mucosa provided. The expansion device of the present application, like a hand control, can provide the end position of a polyp during polyp detection and treatment. The expansion device can hide polyps in cavities, such as intestinal tracts, everywhere in the process of endoscopy.

The dilation device of the present application reduces the risk of patient cross-infection during endoscopy at the forefront of infection prevention. This innovative design of the present application aims to control the patient's prognosis of infection while increasing the efficiency of the procedure.

The stent of the present application can be designed for gastroenterologists to seek the highest detection rate of adenomatous polyps during endoscopy. The flexible detection of the hinged arms separates the folded colon, allowing the polyps to be clearly visible. The secure fit of the internal geometry of the stent during the endoscopic procedure ensures that the device will fit securely with the endoscope where applicable. The expansion device has a smooth surface, so that the lens can be conveniently pushed, and the wall of the lumen can not be bound or dragged.

The dilation device of the present application enables the endoscope field of view to be maintained at a suitable depth for maximum efficiency in assisting insertion of the endoscope into the gastrointestinal tract. The stent of the present application should be mounted without the use of lubricants because the device may slide off the endoscope during the procedure. The stent of the present application can only be used with compatible endoscopes, ensuring that the stent of the present application is fully installed in place on the endoscope prior to use. The present stent requires care to ensure that the end of the endoscope is in good condition and not damaged before the device is attached to the endoscope. The stent of the present application should be removed from the endoscope after use. The stent of the present application may be biologically contaminated after use and therefore needs to be disposed of as clinical waste. The stent of the present application is typically a sterile product intended for single use only, and is recommended for use if the package is damaged.

The stent of the present application may typically be made of a material such as silicone, which is often required to ensure that the patient's body does not react as allergic to the product and due to the potential risk of bruising.

It should be noted that the stent of the present application may fall off during use if the sleeve of the stent of the present application is not properly fitted over the endoscope. If this happens, the device needs to be taken. In use, if the body of the stent of the present application is seen in the endoscopic field, the endoscopic examination is immediately stopped and the endoscope and sleeve are slowly withdrawn from the body to reduce the risk of detachment.

The stent of the present application is essentially a sterile medical device, such a single use sterile endoscope sheath, suitable for use at the distal end of most endoscopes, and designed to improve button control and mucosal visibility during extubation in patients with coloboma disease, including colorectal cancer. Higher lesion visualization has been shown to improve the detection rate of adenomas.

The dilation device of the present application is intended to give an optimal view of the entire colon. The stent has been created with a single row of long arms to detect, even in the ascending colon, the gentle eversion and stretching of the colon folds. The expansion device can be controlled by more buttons and is easy to insert or rotate.

The detection arm of the expansion device is very flexible to open, polyps can be comprehensively displayed, and if the expansion device is not used, the polyps can be hidden behind colon folds. The dilation device of the present application makes adenoma detection easier. The dilation device of the present application, as an endoscopic device, can be used to perform colonoscopy, seeking the highest detection rate of adenoma polyps for gastroenterologists.

The unique design of the stent of the present application provides low resistance during advancement of the cecum. A flexible detection arm separates the folded colon and gently stretches the mucosa, providing a clear view of the endoscope to detect polyps. Once a polyp is found, the present dilation device helps stabilize the colonoscope tip in the optimal position and perform polypectomy and polyp retrieval. The smooth medical silica gel surface can be designed and used for the expansion device, so that the expansion device is easy to push in the process of performing examination and treatment, and the wall of a lumen cannot be bound or dragged. The expansion device adopts a single row of flexible detection arms, can easily separate the folded colon, and enables adenomatous polyps to enter an observation visual field. The expansion device of the present application securely holds the device in place throughout use. The stent of the present application allows flexible lateral mobility without impeding the TI cannula.

Drawings

Fig. 1 depicts a front view of the inventive stent.

Figure 2 depicts a perspective view of the inventive stent.

Fig. 3 depicts a top view of the inventive stent.

Fig. 4 depicts the situation of the expanding device of the present invention after inserting the endoscope objective lens end inside the hollow cylindrical body, when the cavity is examined, moving forward inside the cavity, wherein each of the distracting arms swings downward.

Fig. 5 depicts the situation of the expanding device of the present invention after inserting the endoscope objective lens end inside the hollow cylindrical body, when examining the lumen, moving backwards inside the lumen, wherein each of the distracting arms swings upwards.

Detailed Description

The present invention will be further described with reference to the following examples, however, the scope of the present invention is not limited to the following examples. Those skilled in the art will appreciate that various changes and modifications may be made to the invention without departing from the spirit and scope of the invention. The present invention describes the materials used in the test and the test methods generally and/or specifically. Although many materials and methods of operation are known in the art for carrying out the objects of the invention, the invention is nevertheless described in detail herein.

Various embodiments of the present invention are described in detail below with reference to the accompanying drawings.

See fig. 1-5, respectively, in sequence. Fig. 1 depicts a front view of the inventive expansion device, fig. 2 depicts a perspective view of the inventive expansion device, and fig. 3 depicts a top view of the inventive expansion device.

As shown in fig. 1 to 3, an endoscope stent according to the present invention is depicted, and includes:

a hollow cylindrical body 1, the diameter of the hollow inner wall of the hollow cylindrical body 1 is matched with the outer diameter of an endoscope objective lens end 3 to be used (shown in figures 4 and 5), so that the endoscope objective lens end 3 provided with the expansion device can not slide down after penetrating into a human body cavity;

the opening arms 2 comprise 4-12 pieces, and are outwards radially opened at the outer side of the upper end of the hollow cylindrical body 1 and uniformly distributed for a circle, so that the endoscope objective lens end 3 provided with the expansion device can open the cavity tissue after penetrating into the human cavity.

The "upper end" described in the present application is a point that, with respect to the hollow cylindrical body 1, when the endoscope objective lens tip is inserted from the lower end of the hollow cylindrical body 1 until the tip end thereof is substantially flush with the upper end of the hollow cylindrical body 1, clinical application can be performed. As shown in fig. 1, the end where the arm 2 is provided is the upper end of the hollow cylindrical body 1.

According to an embodiment of the expanding device for an endoscope of the present invention, the spreading arms 2 include 6 to 10, for example, 6, 7, 8, 9, 10. Generally, an 8-bar spreading arm design is preferred (8 are shown in fig. 2 and 3).

According to an embodiment of the extension means for endoscopes of the present invention, the diameter of the extension means is up to 2-5 cm, for example up to 2.5-4 cm, after the spreading arms 2 are fully extended. For example, as shown in FIG. 1 or FIG. 3, the diameter of the entire stent is preferably 2-5 cm, for example, 2.5-4 cm, after the arms 2 are fully deployed.

According to an embodiment of the expanding device for an endoscope of the present invention, the hollow cylindrical body 1 and the expanding arms 2 are integrally formed. This one-piece design, as shown in fig. 2, allows for the most simplified manufacturing process of the stent and is very convenient for sterilization since the stent of the present application is typically sterile.

According to an embodiment of the extension means for an endoscope, the extension means is made of a soft plastic material, which is sufficient to prevent the end of the endoscope objective lens, on which the extension means is mounted, from slipping down after penetrating into the body lumen.

Further, referring to fig. 4 and 5, the stent of the present application is depicted in a use state.

Specifically, fig. 4 depicts the situation of the expanding device of the present invention when moving forward in a lumen, such as an intestinal tract, after inserting the endoscope objective lens tip 3 into the hollow cylindrical body 1, wherein each of the expanding arms 2 swings downward. Fig. 5 depicts the situation when the dilator device of the present invention is moved backward in a lumen, such as an intestinal tract, after inserting the endoscope objective lens tip 3 into the hollow cylindrical body 1 thereof, wherein each of the arms 2 is swung upward.

according to an embodiment of the expanding device for endoscopes of the present invention, which is made of a soft plastic material, as shown in fig. 4 and 5, which enables the expanding arm 2 to swing upwards (i.e. during retraction) and downwards (i.e. during advancement) after penetrating into the body lumen, the acute angle at which the expanding arm 2 swings towards the front of the endoscope objective tip, which may be referred to as the "top-swing angle" or replaced with the letter α in the present application, as shown in fig. 5, the "top-swing angle" of the expanding arm 2 (i.e. the direction in which the expanding arm 2 retracts within the body lumen, the "bottom-swing angle" of the expanding arm 2 (i.e. the direction in which the expanding arm 2 moves towards the front of the body lumen, the "bottom-swing angle" of the expanding arm 2 (i.e. the direction in which the expanding arm 2 swings towards the back of the endoscope objective tip, the "bottom-swing angle" of the expanding arm 2 "may be referred to as the" bottom-swing "or replaced with the letter β", as the direction in the body lumen, which the expanding arm 2 may be referred to the "bottom-swing angle" of the endoscope tip "4. the endoscope tip" and the "of the expanding device, which the expanding arm 2" may be referred to be used for example, and the "3. if the expanding device" is used for example, the endoscope tip "5" is used for example, the endoscope tip "of the endoscope" 1. the endoscope "and" of the endoscope "3. the endoscope" is not used for example, the endoscope "3. the endoscope" as the endoscope "and" the endoscope "is used in the" the endoscope "when the endoscope" used in the endoscope "used for example, the endoscope" used, the endoscope "is used, the endoscope" used in the endoscope "used for example, the endoscope" used in.

fig. 5 is a schematic view showing a relatively small angle α from a front view of the paper in fig. 5 for the sake of the drawing perspective of the present application, and in fact, the angle α is greater than 50 deg. for the stent product designed according to the definition of the present invention.

according to an embodiment of the stent for an endoscope of the present invention, the stent has an angle α in the range of 60 to 90 ° when used in combination with an endoscope.

according to an embodiment of the stent for an endoscope of the present invention, when the stent is used in combination with an endoscope, the β angle is in the range of 15 to 45 °.

according to an embodiment of the stent for an endoscope of the present invention, the stent has a beta angle within a range of 20 to 40 degrees when used in cooperation with an endoscope, as shown in fig. 4, the beta angle is smaller than 45 degrees during the advancing process of the stent in the lumen when used in cooperation with an endoscope, so that the diameter of the entire stent is as small as possible, thereby minimizing the discomfort felt by the patient when the stent is advanced in the lumen.

According to one embodiment of the expanding device for an endoscope of the present invention, the hollow cylindrical body 1 is provided at a middle portion thereof with one or more holes 4, as shown in fig. 1. When setting up these holes 4, can make the internal diameter of hollow cylindrical body 1 suitable little to these holes 4 make hollow cylindrical body 1 have higher elasticity, and then make endoscope objective lens end 3 can be with stronger elastic restoring force parcel in endoscope objective lens end 3 periphery when inserting hollow cylindrical body 1, strengthen the degree of combination of the two, reduce the probability that this application expanding unit drops from endoscope objective lens end 3.

according to an embodiment of the expanding device for an endoscope of the present invention, when no external force is applied to the expanding device, each of the arms 2 is radially extended outward perpendicular to the hollow cylindrical body 1, or the arms 2 are slightly swung downward such that the β angle is in the range of 75 to 90 °, as shown in fig. 1.

according to an embodiment of the expanding device for an endoscope of the present invention, when no external force is applied to the expanding device, each of the arms 2 is radially extended outward perpendicular to the hollow cylindrical body 1, or the arms 2 are slightly swung downward so that the β angle is in a range of 80 to 90 °.

According to an embodiment of the stent for an endoscope according to the present invention, the stent is provided in a sterile form.

According to one embodiment of the stent for an endoscope of the present invention, the stent is provided in a sterile form and stored in a sterile condition.

According to an embodiment of the stent for an endoscope according to the present invention, the stent is disposable.

According to an embodiment of the endoscopic stent of the present invention, the stent is used for enteroscopy and/or treatment.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims (9)

1. An endoscope stent comprising:

the diameter of the hollow inner wall of the hollow cylindrical body is matched with the outer diameter of the objective lens end of the endoscope to be used, so that the objective lens end of the endoscope provided with the expansion device cannot slide down after penetrating into a human body cavity;

the opening arms comprise 4-12, the opening arms are outwards radially opened at the outer side of the upper end of the hollow cylindrical body and are uniformly distributed for a circle, so that the end head of the endoscope objective lens provided with the expansion device can open the cavity tissue after penetrating into the human cavity,

wherein,

the expansion device is made of soft plastic materials, and the soft plastic materials enable the expansion arms to swing upwards, namely in the backward process and downwards, namely in the forward process, after penetrating into the cavity of the human body;

the acute angle included angle formed between a straight line connected between the top of the spreading arm and the root of the spreading arm and the axis of the hollow cylindrical body is used as an acute angle included angle meter, the spreading arm swings upwards, namely the backward direction of the spreading arm in a human body cavity channel, the acute angle included angle of the spreading arm which tilts towards the front direction of the end head of the objective lens of the endoscope is replaced by a letter α, the spreading arm swings downwards, namely the forward direction of the spreading arm in the human body cavity channel, and the acute angle included angle of the spreading arm which tilts towards the back direction of the end head of the objective lens of the endoscope is replaced by a letter β, wherein α is 1.1-6 times of β;

when the expansion device is matched with an endoscope for use, the α angle is within the range of 50-90 degrees;

when the expansion device is used with an endoscope in a matched mode, the β angle is within the range of 15-45 degrees.

2. the endoscopic stent according to claim 1, wherein α is 1.5 to 4.5 times as large as β.

3. the endoscopic stent according to claim 1, wherein the angle α is in the range of 60 to 90 ° when used in combination with an endoscope.

4. the endoscopic stent according to claim 1, wherein the β angle is in the range of 20 to 40 ° when used in cooperation with an endoscope.

5. The endoscopic stent according to claim 1, wherein the stent arms are sufficiently spread apart so that the diameter of the stent is 2 to 5 cm.

6. The endoscopic dilation device according to claim 1 wherein the hollow cylindrical body and the distraction arms are integrally formed.

7. An endoscope expansion device according to claim 1, characterized in that it is made of a soft plastic material which is sufficient to prevent the end of the endoscope objective lens to which the expansion device is attached from slipping down after penetrating into the body lumen.

8. The endoscopic dilation device according to claim 1 wherein the hollow cylindrical body is provided with one or more holes in the middle.

9. The endoscopic dilation device according to claim 1 wherein each of the distraction arms is radially distracted outward perpendicular to the hollow cylindrical body when no external force is applied.