CN118662074A - Outward illumination type transparent sheath tube - Google Patents

Abstract

The invention discloses an outward illumination type transparent sheath tube, which comprises a closed sheath tube; a transparent cover is fixed at the front end of the sheath tube; an illumination assembly is arranged inside the transparent cover; the rear end of the sheath tube is provided with a connecting part; the connecting part is provided with a power supply contact piece connected with the endoscope handle and an endoscope control displacement mechanism mutually fixed with the endoscope handle; the endoscope control displacement mechanism is detachably arranged on the connecting part; after the sheath tube and the endoscope are mutually in butt joint and fixed, the endoscope enters the sheath tube, and the endoscope enters the cavity without the channel through the combination of the endoscope and the sheath tube, so that the part needing examination and diagnosis is observed. The transparent cover can be directly contacted with the mucous membrane layer, and the optical fiber illumination in the transparent cover is turned on, so that the transparent cover can not form messy reflection with an external air medium, thereby achieving clear images of the mucous membrane layer, guiding an operator to smoothly enter the transparent cover according to a path, and avoiding reducing the risk of misoperation of unclear path.

Description

An externally illuminated transparent sheath

Technical Field

The invention relates to the technical field of endoscopes, in particular to an outward-illuminating transparent sheath tube.

Background Art

Endoscopes are mature products that have been used in medical institutions for a long time. The main products are divided into optical image display, flexible fiber optic image transmission, electronic, and flexible and rigid. In the early clinical applications, optical and fiber optic flexible products were the main ones. With the continuous advancement of science and technology and the emergence of micro sensors, electronic endoscopes have also begun to be widely used in many clinical departments.

The application of endoscopes is divided into flexible, rigid, and rigid endoscopes with curved front ends according to the characteristics of different organ structures of the human body. They can follow the natural cavities of the human body to enter for visual observation and diagnosis and treatment. At the same time, when there are no natural cavities such as the chest, abdomen, shoulder, elbow, spine, and ventricle, blunt puncture is required to establish a channel for visual operation of the endoscope. Therefore, the endoscope observes and treats lesions in different parts of the human body through natural cavities and the establishment of channels, which greatly simplifies the complex open abdominal surgery in the past. The use of some endoscopic diagnosis and treatment methods has become the preferred medical device that greatly reduces the pain of patients and the speed of clinical practice.

With the progress of living habits and the aging of the population, brain diseases are also increasing and tend to be younger. Especially in the case of sudden cerebral hemorrhage, how to locate the bleeding site in time and how to stop the bleeding in time has been a research topic in the medical community. Since the brain tissue is a non-cavity, wrinkled mucosal tissue sealed in the skull, when using craniotomy to establish a channel, it is operated by clinical professionals with very skilled and high medical structural knowledge. Therefore, there are strict high-quality design requirements for the design of endoscopes used in the skull. Especially under the special structural organization of brain tissue, it is necessary to separate the gaps in the brain tissue to insert the visualization endoscope, and also to avoid the design structure of the endoscope from accidentally damaging the brain tissue during clinical operation. Due to the complexity of intracranial diseases, there is an urgent need to provide an intracranial visualization endoscope product in the form of emergency treatment for cerebral hemorrhage.

Summary of the invention

The purpose of the present invention is to provide an outward-lighting transparent sheath tube, which is formed by sealing and fixing a transparent cover with external lighting and a stainless steel tube to form a sheath tube channel. The sheath tube is composed of a double-layer stainless steel tube, and the gap between the two tubes is respectively a lighting optical fiber or an LED light power supply cable and a channel for attracting the front section liquid. When the endoscope enters the sheath tube, there is a device combining the two at the tail of the sheath tube and the tail of the handle of the endoscope. This device has both interlocking and fine-tuning the optimal distance between the front image acquisition window and the transparent cover, and also has a power supply for connecting the LED light source fixed on the transparent cover at the front end. The switching of the power supply is controlled by the switch of the handle. The endoscope is used in the gap between the cavity or adhesion tissue without damaging the cavity mucosa or avoiding damaging the mucosa layer as much as possible. The possibility of operation is realized by switching the lighting and the image is prevented from being affected by the external medium and causing misoperation. At the same time, the focal length imbalance between the image acquisition window and the transparent cover is prevented from affecting the restoration display of the best image. The endoscope control displacement mechanism at the tail of the sheath tube and the tail of the handle meets the clinical application.

The present invention is achieved through the following technical solutions:

A transparent sheath tube with external illumination comprises a closed sheath tube; wherein: a transparent cover is fixed to the front end of the sheath tube; a lighting assembly is arranged inside the transparent cover; a connecting portion is arranged at the rear end of the sheath tube; a power contact piece connected to an endoscope handle and an endoscope control displacement mechanism fixed to the endoscope handle are arranged on the connecting portion; the endoscope control displacement mechanism is detachably mounted on the connecting portion; when the sheath tube and the endoscope are docked and fixed to each other, the endoscope enters the sheath tube, and the endoscope enters a cavity without a channel through the combination with the sheath tube to observe the part that needs to be inspected and treated.

As a further improvement of the technical solution of the present invention, the endoscope control displacement mechanism includes a fine-tuning fixed end, a fine-tuning movable end and a fine-tuning rotating part; the fine-tuning fixed end is detachably mounted on the connecting part; the fine-tuning movable end is connected to the endoscope handle; the fine-tuning rotating part is sleeved between the fine-tuning fixed end and the fine-tuning rotating part; the fine-tuning rotating part is threadedly connected to the fine-tuning movable end; the endoscope is led out from the fine-tuning movable end, passes through the fine-tuning fixed end and the connecting part in sequence, and then enters the sheath tube. After the endoscope enters the sheath tube, the front end of the endoscope moves back and forth in the transparent cover.

As a further improvement of the technical solution of the present invention, the endoscope control displacement mechanism also includes a fine-tuning spring; one end of the fine-tuning spring abuts against the fine-tuning fixed end, and the other end abuts against the fine-tuning movable end.

As a further improvement of the technical solution of the present invention, a circular groove is provided on the connecting portion; a buckle is provided on the fine-tuning fixed end; and the buckle is snapped into the circular groove.

As a further improvement of the technical solution of the present invention, a fixing groove for installing the lighting assembly is provided on the transparent cover; the lighting assembly is fixed in the fixing groove by transparent glue.

As a further improvement of the technical solution of the present invention, the lighting component is an LED lamp or a lighting optical fiber; the LED lamp is welded on a micro PCB flexible board; the lighting optical fiber and the micro PCB flexible board are both fixed in the fixing groove by transparent glue.

As a further improvement of the technical solution of the present invention, the transparent cover is provided with a sensor channel and a suction or perfusion channel communicating with the rear end of the sheath tube; a pressure sensor or a temperature sensor is installed on the sensor channel.

As a further improvement of the technical solution of the present invention, the sheath tube includes an outer tube and a special-shaped inner lining tube; the special-shaped inner lining tube is sleeved in the outer tube; the outer side wall of the special-shaped inner lining tube is respectively provided with a light source power cable groove, an illumination optical fiber groove, a sensor cable groove and a suction or perfusion channel groove.

As a further improvement of the technical solution of the present invention, the connecting portion is respectively provided with an LED cable outlet, an illumination optical fiber outlet, a sensor cable outlet and a suction or perfusion channel outlet.

As a further improvement of the technical solution of the present invention, the lamp source power line drawn out from the sheath tubes is welded and fixed to the power contact piece.

Compared with the prior art, the present invention provides an outward-lighting transparent sheath tube, which has the following beneficial effects:

The present invention designs a switchable light illumination mode for different situations when inserting into the cavity, that is, the optical fiber or LED lamp beads for external illumination are attached to the inner side of the transparent cover and the illumination optical fiber or LED pre-buried inside the endoscope itself form a two-way design. Under normal circumstances, the transparent cover is not affected by the external brightness, and the image acquisition window inside the transparent cover can clearly collect the image information outside the transparent cover. The closed endoscope with the transparent cover can clearly find the part close to the mucosal layer. At this time, the internal and external lighting systems are switched, that is, the external illumination of the transparent cover is turned off and the illumination of the tip of the endoscope inside the transparent cover is switched. Since the transparent cover can directly contact the mucosal layer, turning on the optical fiber illumination inside the transparent cover will not form random reflections with the external air medium, so a clear image of the mucosal layer is achieved, guiding the operator to enter smoothly according to the path, and avoiding the risk of misoperation due to unclear path.

The inner side of the sheath tube of the present invention is provided with a transparent cover for external lighting and a sheath tube channel formed by sealing and fixing a stainless steel tube. The sheath tube is composed of a double-layer stainless steel tube, and the gap between the two tubes is respectively a lighting optical fiber or an LED lamp power supply cable and a channel for attracting the liquid in the front section. When the endoscope enters the sheath tube, there is a device combining the two at the tail of the sheath tube and the tail of the handle of the endoscope. This device has both mutually locked and fine-tuned the optimal distance between the front image acquisition window and the transparent cover, and also has a power supply for connecting the LED light source fixed on the transparent cover at the front end. The switching of the power supply is controlled by the switch of the handle. The endoscope is used in the gap between the cavity or adhesion tissue and does not damage the cavity mucosa or try to avoid damaging the mucosa layer. The possibility of operation is realized by switching the lighting and the image is avoided from being affected by the external medium and causing misoperation. At the same time, the focal length imbalance between the image acquisition window and the transparent cover is avoided to affect the restoration display of the best image. The endoscope control displacement mechanism at the tail of the sheath tube and the tail of the handle meets the clinical application, so that the image acquisition window at the front end of the endoscope can clearly collect the image information outside the transparent cover, and achieve the best observation effect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an outward-illuminating transparent sheath tube according to an embodiment of the present invention;

FIG2 is a schematic diagram of a top view of the transparent cover according to an embodiment of the present invention;

Fig. 3 is a cross-sectional view taken along line A-A of Fig. 2;

Fig. 4 is a cross-sectional view taken along line B-B of Fig. 2;

FIG5 is a schematic diagram of the arrangement structure of the lighting assembly on the transparent cover according to an embodiment of the present invention;

FIG6 is a second schematic diagram of the arrangement structure of the lighting assembly on the transparent cover according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a layout structure of fixing pressure and temperature sensors on a transparent cover according to an embodiment of the present invention;

FIG8 is a schematic diagram of a layout structure of fixing pressure and temperature sensors on a transparent cover according to an embodiment of the present invention;

9 is a schematic diagram of a use state of a sheath tube and an endoscope after docking according to an embodiment of the present invention;

Fig. 10 is a schematic diagram of the J-J cross-sectional schematic diagram of Fig. 9 in a use state;

Fig. 11 is a second schematic diagram of the J-J cross-sectional schematic diagram of Fig. 9 in a use state;

FIG12 is an enlarged schematic diagram of the K portion of FIG10 ;

FIG13 is an enlarged schematic diagram of the L portion of FIG10 ;

FIG14 is an enlarged schematic diagram of the M portion of FIG11;

FIG15 is an enlarged schematic diagram of the N portion of FIG11;

FIG16 is a schematic diagram of the sheath structure of an embodiment of the present invention;

Fig. 17 is a cross-sectional view taken along line C-C of Fig. 16;

Fig. 18 is a cross-sectional view taken along line D-D of Fig. 16;

FIG19 is an enlarged schematic diagram of portion E of FIG18 ;

FIG20 is an enlarged schematic diagram of the G portion of FIG16;

FIG21 is an enlarged schematic diagram of portion H of FIG1 ;

FIG. 22 is a schematic diagram of an outward-illuminating transparent sheath tube and endoscope combination and connection with an image processor according to an embodiment of the present invention.

In the figure: 1-sheath; 2-transparent cover; 3-illumination assembly; 4-power contact piece; 5-endoscopic control displacement mechanism; 6-endoscopic; 7-electrical signal plug; 11-connecting part; 12-outer tube; 13-special-shaped inner lining tube; 21-fixing groove; 22-sensor channel; 23-attraction or perfusion channel; 31-LED lamp; 32-micro PCB flexible board; 33-illumination optical fiber; 51-fine-tuning fixed end; 52-fine-tuning movable end; 53-fine-tuning rotating part; 54-fine-tuning spring; 111-circular card slot; 112-LED cable outlet; 113-illumination optical fiber outlet; 114-sensor cable outlet; 115-attraction or perfusion channel outlet; 131-lamp power cable slot; 132-illumination optical fiber slot; 133-sensor cable slot; 134-attraction or perfusion channel slot; 511-buckle.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, upper end, lower end, top, bottom...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In the present invention, unless otherwise clearly defined and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features; in addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

In order to prevent the optical fiber lighting or LED lighting at the end of the endoscope from directly contacting the cavity mucosa in the use without a cavity, the lighting is blocked by the mucosa, and the image acquisition window cannot see the actual situation of the mucosa, which may cause unexpected risks; therefore, considering that there needs to be a certain distance between the image acquisition window and the object to be photographed, a transparent window is designed at the front end of the endoscope image acquisition and optical fiber lighting to meet the space distance for image capture in the environment without a cavity. And in actual applications, when the light is emitted in the transparent cavity, the image acquisition window can observe the pathological information of the mucosal surface. However, in some existing designs, because the transparent cover and the mucosa have not yet been completely attached to the mucosal layer, the light emitted in the transparent cover and the reflection of the light irradiated by the transparent cover, the glare generated on the image acquisition window cannot clearly guide the smooth insertion of the endoscope, and there is a potential risk of misoperation for the operator; therefore, an outward-lighting transparent sheath is provided.

Specifically, as shown in Figures 1 to 22, an outward-illuminating transparent sheath tube includes a closed sheath tube 1; wherein: a transparent cover 2 is fixed to the front end of the sheath tube 1; a lighting assembly 3 is arranged inside the transparent cover 2; a connecting portion 11 is arranged at the rear end of the sheath tube 1; the connecting portion 11 is provided with a power contact piece 4 connected to the endoscope handle and an endoscope control displacement mechanism 5 fixed to the endoscope handle; the power contact piece 4 is used to supply power to the front end of the sheath tube 1; the endoscope control displacement mechanism 5 is detachably mounted on the connecting portion 11; when the sheath tube 1 and the endoscope 6 are docked and fixed to each other, the endoscope 6 enters the sheath tube 1, and the endoscope 6 enters the cavity without a channel through the combination with the sheath tube 1 to observe the part that needs to be inspected and treated.

The present invention designs a switchable light illumination mode for different situations when inserting into a cavity. That is, the optical fiber or LED lamp bead for external illumination is attached to the inner side of the transparent cover 2 and the illumination optical fiber or LED pre-buried inside the endoscope 6 itself forms a two-way design. Under normal circumstances, the transparent cover 2 is not affected by the external brightness, and the image acquisition window inside the transparent cover 2 can clearly collect the image information outside the transparent cover 2. The closed endoscope 6 with the transparent cover 2 can clearly find the part close to the mucosal layer. At this time, the internal and external lighting systems are switched, that is, the external illumination of the transparent cover 2 is turned off and the illumination of the tip of the endoscope 6 inside the transparent cover 2 is turned on. Since the transparent cover 2 is in direct contact with the mucosal layer, turning on the optical fiber illumination inside the transparent cover 2 will not form random reflections with the external air medium, so a clear image of the mucosal layer is achieved, guiding the operator to enter smoothly according to the path, and avoiding the risk of misoperation due to unclear path.

As shown in Figures 13, 15 and 21, specifically, in this embodiment, the endoscope control displacement mechanism 5 includes a fine-tuning fixed end 51, a fine-tuning movable end 52 and a fine-tuning rotating part 53; the fine-tuning fixed end 51 is detachably mounted on the connecting part 11; the fine-tuning movable end 52 is connected to the endoscope handle; the fine-tuning rotating part 53 is sleeved between the fine-tuning fixed end 51 and the fine-tuning rotating part 53; the fine-tuning rotating part 53 is threadedly connected to the fine-tuning movable end 52; the endoscope 6 is led out from the fine-tuning movable end 52, passes through the fine-tuning fixed end 51 and the connecting part 11 in sequence, and then enters the sheath 1. After the endoscope 6 enters the sheath 1, the front end of the endoscope 6 moves back and forth in the transparent cover 2. It should be noted that when it is necessary to adjust the distance between the front end of the endoscope 6 and the transparent cover 2, the fine-tuning rotating part 53 rotating around the fine-tuning fixed end 51 is screwed. Since the fine-tuning rotating part 53 is threadedly connected to the fine-tuning movable end 52, the fine-tuning movable end 52 moves back and forth, thereby driving the endoscope 6 to move back and forth in the transparent cover 2, so that the image collection window at the front end of the endoscope 6 can clearly collect image information outside the transparent cover 2, thereby achieving the best observation effect.

As shown in Fig. 13 and Fig. 15, specifically, in the present embodiment, the endoscope control displacement mechanism 5 further includes a fine-tuning spring 54; one end of the fine-tuning spring 54 abuts against the fine-tuning fixed end 51, and the other end abuts against the fine-tuning movable end 52. It should be noted that the damping is increased by the built-in fine-tuning spring 54 to achieve fine-tuning of the distance of the endoscope 6 in the transparent cover 2, and when the fine-tuning rotating part 53 is turned, the feeding amount of the endoscope 6 in the transparent cover 2 will not be too large.

As shown in FIG. 21 , specifically, in this embodiment, the connection portion 11 is provided with a circular groove 111; the fine-tuning fixed end 51 is provided with a buckle 511; the buckle 511 is engaged in the circular groove 111. It should be noted that the circular groove 111 is used to fix the fine-tuning fixed end 51, and the fine-tuning fixed end 51 is fixed to the connection portion 11 after being engaged in the circular groove 111 by the buckle 511.

As shown in Fig. 3, specifically, in this embodiment, the transparent cover 2 is provided with a fixing groove 21 for installing the lighting assembly 3; the lighting assembly 3 is fixed in the fixing groove 21 by transparent adhesive. It should be noted that the fixing groove 21 makes the installation of the lighting assembly 3 more compact and beautiful.

As shown in Figures 5 and 6, specifically, in this embodiment, the lighting component 3 is an LED lamp 31 or a lighting optical fiber 33; the LED lamp 31 is welded on a micro PCB flexible board 32; the lighting optical fiber 33 and the micro PCB flexible board 32 are both fixed in the fixing groove 21 by transparent glue.

Specifically, in this embodiment, the transparent cover 2 is provided with a sensor channel 22 and a suction or perfusion channel 23 connected to the rear end of the sheath tube 1; used to suck the liquid in the front section, the sensor channel 22 is installed with a pressure sensor or a temperature sensor. The present invention also takes into account the particularity of the intracranial part and adds a design scheme of temperature control and pressure measurement. At the same time, it also provides a convenient visualization function for sucking out a small amount of bleeding, and can become an intracranial visualized endoscope product in the form of emergency treatment of cerebral hemorrhage.

As shown in Figure 17, specifically, in this embodiment, the sheath tube 1 includes an outer tube 12 and a special-shaped inner lining tube 13; the special-shaped inner lining tube 13 is sleeved in the outer tube 12; the outer side wall of the special-shaped inner lining tube 13 is respectively provided with a lamp power line groove 131, a lighting optical fiber groove 132, a sensor cable groove 133 and a suction or perfusion channel groove 134.

As shown in Fig. 19 and Fig. 20, specifically, in this embodiment, the connection portion 11 is provided with an LED cable outlet 112, an illumination fiber outlet 113, a sensor cable outlet 114 and an aspiration or perfusion channel outlet 115, respectively, to facilitate the extraction of the LED cable, the illumination fiber 33, the sensor cable and the aspiration or perfusion channel 23. The illumination light of the illumination fiber 33 is provided by a cold light source.

Specifically, in this embodiment, the light source power line drawn from the sheath tube 1 is welded and fixed to the power contact piece 4. The sheath tube 1 is connected to the endoscope handle through the power contact piece 4 to realize power supply to the lighting assembly 3.

As shown in FIG. 22 , specifically, in this embodiment, the endoscope 6 is connected to the image processor via an electrical signal plug 7 .

The present invention provides an outward-lighting transparent sheath tube, with a transparent cover 2 for external lighting on the inside and a sheath tube channel formed by sealing and fixing a stainless steel tube. The sheath tube 1 is composed of a double-layer stainless steel tube, and the gap between the two tubes is respectively a lighting optical fiber 33 or an LED lamp 31 power supply cable and a channel for attracting the front section liquid. When the endoscope 6 enters the sheath tube 1, there is a device combining the two at the tail of the sheath tube 1 and the tail of the handle of the endoscope. This device has both interlocking and fine-tuning the optimal distance between the front image acquisition window and the transparent cover 2, and also has a power supply for connecting the LED light source fixed on the transparent cover 2 at the front end. The switching of the power supply is controlled by the switch of the handle. The endoscope is used in the gap between the cavity or adhesion tissue and does not damage the cavity mucosa or try to avoid damaging the mucosa layer. The possibility of operation is realized by switching the lighting and the image is prevented from being affected by the external medium and causing misoperation. At the same time, the focal length imbalance between the image acquisition window and the transparent cover 2 is prevented from affecting the restoration display of the optimal image. The endoscope control displacement mechanism 5 at the tail of the sheath tube 1 and the tail of the handle meets the clinical application.

The combined product of the sheath tube 1 and the endoscope of the present invention is mainly used for products used in the brain. Due to the observation of the brainstem, there is a clinical step of craniotomy in advance. After the craniotomy operation is completed, a sheath tube 1 with an endoscope is inserted into a cavity formed, and the front end of the sheath tube 1 has a transparent cover 2. Due to the adhesion characteristics of the brain tissue at the brainstem, it is necessary to reach the site of observation of the lesion without damaging the tissue through an endoscope with a transparent cover 2. Therefore, the combination of the transparent cover 2 and the sheath tube 1 is an extremely smooth external structure with absolutely no burrs. At the same time, considering the adhesion of mucus to the transparent cover 2, the transparent cover 2 and the outer layer of the external stainless steel tube are coated with a hydrophilic coating, and it is a safe and effective hydrophilic coating film. This product provides a recommended product for a visual diagnosis and treatment plan for the removal of acute cerebral hemorrhage and hydrocephalus. The specific application is still based on the clinical selection according to actual needs.

Due to the complexity of intracranial diseases, the products currently on the market, including the products of this invention, are only a way to use endoscopic visualization for intracranial conditions, and there are various different schemes for the diagnosis and treatment of intracranial diseases in clinical practice. In the present invention, it is mainly a good attempt to guide the peek and find the symptoms in the tissues through the sheath 1 with a transparent cover 2, and the design scheme of temperature control and pressure measurement is added in consideration of the particularity of the intracranial region. At the same time, it also has the function of convenient visualization of aspiration of a small amount of bleeding, and can become an intracranial visualized endoscopic product in the form of emergency treatment of cerebral hemorrhage.

As outlined above, intracranial diseases are complex and have high risks in diagnosis and treatment, but the progress of visual endoscopes has also provided a basis for their application in different medical institutions. With the increasing social trend of aging, the incidence of intracranial diseases is also increasing. At this time, the emergence of better visualization products for early diagnosis and treatment provides a convenient new concept product for the development of new clinical procedures and early rescue of patients. It is a product worthy of widespread promotion.

The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims (10)

1. An outward illumination type transparent sheath tube comprises a closed sheath tube; the method is characterized in that: a transparent cover is fixed at the front end of the sheath tube; an illumination assembly is arranged inside the transparent cover; the rear end of the sheath tube is provided with a connecting part; the connecting part is provided with a power supply contact piece connected with the endoscope handle and an endoscope control displacement mechanism mutually fixed with the endoscope handle; the endoscope control displacement mechanism is detachably arranged on the connecting part; after the sheath tube and the endoscope are mutually in butt joint and fixed, the endoscope enters the sheath tube, and the endoscope enters the cavity without the channel through the combination of the endoscope and the sheath tube, so that the part needing examination and diagnosis is observed.

2. An externally illuminated transparent sheath according to claim 1, wherein: the endoscope control displacement mechanism comprises a fine tuning fixed end, a fine tuning movable end and a fine tuning rotating part; the fine tuning fixed end is detachably arranged on the connecting part; the fine adjustment movable end is connected with the endoscope handle; the fine tuning rotating part is sleeved between the fine tuning fixed end and the fine tuning rotating part; the fine adjustment rotating part is in threaded connection with the fine adjustment movable end; the endoscope is led out from the fine adjustment movable end, sequentially passes through the fine adjustment fixed end and the connecting part and then enters the sheath tube, and after entering the sheath tube, the front end of the endoscope moves back and forth in the transparent cover.

3. An externally illuminated transparent sheath according to claim 2, wherein: the endoscope control displacement mechanism further comprises a fine tuning spring; one end of the fine tuning spring is abutted with the fine tuning fixed end, and the other end of the fine tuning spring is abutted with the fine tuning movable end.

4. An externally illuminated transparent sheath according to claim 3, wherein: the connecting part is provided with a circular clamping groove; the fine adjustment fixing end is provided with a buckle; the buckle is clamped in the circular ring clamping groove.

5. An externally illuminated transparent sheath according to claim 1, wherein: the transparent cover is provided with a fixing groove for installing the lighting component; the lighting component is fixed in the fixing groove through transparent glue.

6. An externally illuminated transparent sheath according to claim 5, wherein: the illumination component is an LED lamp or an illumination optical fiber; the LED lamp is welded on the miniature PCB flexible board; the illumination optical fiber and the miniature PCB flexible board are fixed in the fixing groove through transparent glue.

7. An externally illuminated transparent sheath according to claim 1, wherein: the transparent cover is respectively provided with a sensor channel and an attraction or perfusion channel communicated with the rear end of the sheath tube; and a pressure sensor or a temperature sensor is arranged on the sensor channel.

8. An externally illuminated transparent sheath according to claim 5, wherein: the sheath tube comprises an outer tube and a special-shaped inner liner tube; the special-shaped inner liner tube is sleeved in the outer tube; the outer side wall of the special-shaped lining pipe is respectively provided with a lamp source power supply wire slot, an illumination optical fiber slot, a sensor cable slot and an attraction or perfusion channel slot.

9. An externally illuminated transparent sheath according to claim 8, wherein: the connecting part is respectively provided with an LED cable outlet, an illumination optical fiber outlet, a sensor cable outlet and an attraction or perfusion channel outlet.

10. An externally illuminated transparent sheath according to claim 6, wherein: and a lamp source power line led out from the sheath tube is welded and fixed with the power contact piece.