CN210055945U

CN210055945U - Endoscope with disposable protecting sleeve

Info

Publication number: CN210055945U
Application number: CN201920417337.0U
Authority: CN
Inventors: 王林钢; 俞国良; 孔晓晶; 华立芳; 王磊
Original assignee: HANGZHOU HAWK OPTICAL ELECTRONIC INSTRUMENTS CO Ltd
Current assignee: HANGZHOU HAWK OPTICAL ELECTRONIC INSTRUMENTS CO Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-02-14
Anticipated expiration: 2029-03-29

Abstract

The utility model relates to a medical endoscope. The utility model provides an endoscope with disposable protecting pipe, has met the protecting pipe including insertion portion and operating portion outside the insertion portion, the front end portion of protecting pipe install the lens, be equipped with leaded light passageway and image transmission passageway at the tip of insertion portion earlier, install the leaded light beam in the leaded light passageway, the front end of leaded light beam is installed and is dispersed glass, it is inboard that glass is located the lens to disperse, the light of leaded light beam is reflected by the lens of protecting pipe front end again after dispersing glass, the light after the reflection is located outside the image transmission passageway. The utility model provides an endoscope with a disposable protecting sleeve, which has simple structure and clear image imaging, effectively assists doctors in diagnosis and operation, and can effectively prevent cross infection; the endoscope solves the technical problems that the imaging of the endoscope is unclear and the diagnosis and treatment of doctors are influenced due to the addition of the protective sleeve in the prior art.

Description

Endoscope with disposable protecting sleeve

Technical Field

The utility model relates to a medical endoscope especially relates to an endoscope with disposable protective casing.

Background

At present, in the medical field, the examination, diagnosis and treatment of minimally invasive surgery are highly determined by the industry, wherein a medical endoscope is used as one of minimally invasive surgical instruments, can go deep into the body of a patient, can observe a focus part more intuitively, has accurate diagnosis result, has small damage to the human body, relieves the pain of the patient, and enables the patient to recover better and faster.

The medical endoscope, especially the soft lens, is internally provided with components such as an imaging system, a light transmission illuminating device, a water device channel and the like, and the traditional high-temperature high-pressure steam sterilization treatment is not allowed due to the special material and structure of the components. The disinfection method selected by hospitals at present is disinfectant soaking disinfection and low-temperature plasma sterilization, but disinfectant soaking disinfection can not be completely disinfected, and particularly places which can not be soaked by disinfectant exist in a water channel. The low-temperature plasma sterilization has higher requirements on the endoscope, the endoscope is damaged by different stratification degrees by using the low-temperature plasma sterilization treatment, and according to incomplete statistics, 30 percent of the endoscopes in the endoscope returned to be repaired in hospitals are damaged by the disinfection and sterilization treatment.

Therefore, at present, a plurality of endoscopes are provided with sheaths, and the disposable sheaths are arranged, so that body fluid, blood, organ tissues and the like of a patient can be completely isolated from the endoscopes, and the body fluid, the blood, the organ tissues and the like are directly treated as a disposal part after an operation is finished, thereby avoiding the phenomenon that the endoscope is not completely sterilized or some stubborn bacteria are difficult to kill to cause cross infection.

As in the Chinese patent: "an endoscope (CN201520840333.5) with disposable protection cover", including control division and insertion part, the outer cladding of said insertion part has disposable protection cover; a disposable endoscope body sleeve is arranged in the disposable protective sleeve, an endoscope body is placed in the disposable endoscope body sleeve, and the endoscope body is connected with the control part; the rear end of the disposable protective sleeve is an open end, and the front end of the disposable protective sleeve is provided with a heat-insulating transparent cover; the heat insulation transparent cover and the disposable protective cover are arranged in an inclined mode in the radial direction. However, the heat-insulating transparent cover at the front end of the sheath in the structure can affect the image definition, thereby affecting the operation effect.

SUMMERY OF THE UTILITY MODEL

The utility model provides an endoscope with a disposable protecting sleeve, which has simple structure and clear image imaging, effectively assists doctors in diagnosis and operation, and can effectively prevent cross infection; the endoscope solves the technical problems that the imaging of the endoscope is unclear and the diagnosis and treatment of doctors are influenced due to the addition of the protective sleeve in the prior art.

The utility model also provides an endoscope which has good safety, good stable support of the hose and convenient operation; the technical problems that a transparent part is arranged at the front end of a sheath and is easy to fall off, the hose of the insertion part of an endoscope has poor supporting effect, and the sheath is inconvenient to insert in the prior art are solved.

The above technical problem of the present invention is solved by the following technical solutions: the utility model provides an endoscope with disposable protecting pipe, has met the protecting pipe including insertion portion and operating portion outside the insertion portion, the front end portion of protecting pipe install the lens, be equipped with leaded light passageway and image transmission passageway at the tip of insertion portion earlier, install the leaded light beam in the leaded light passageway, the front end of leaded light beam is installed and is dispersed glass, it is inboard that glass is located the lens to disperse, the light of leaded light beam is reflected by the lens of protecting pipe front end again after dispersing glass, the light after the reflection is located outside the image transmission passageway. The endoscope is characterized in that a light guide beam for transmitting light, a dispersing glass, an image sensor and the like are arranged in the front end part of the endoscope, light emitted by a light source is transmitted through the light guide beam and then is dispersed through the dispersing glass according to a designed dispersing angle to illuminate an examination part, and the image sensor receives an image of the illuminated part, converts the image into an electric signal and then transmits the electric signal to a display. In the operation use, the endoscope tip hugs closely with the high lens lamella of sheath tip, and behind the starting drive, light is through dispersing glass, in penetrating through too high lens lamella, has a small part light to reflect through high lens lamella terminal surface, and the light after the transmission is located outside the image transmission passageway to let during the light that disperses can not get into image sensor, make imaging effectual, the definition is high, effectively helps the doctor to diagnose and treat. Meanwhile, the lens arranged at the front end part of the sheath can also effectively prevent pollutants from entering the endoscope, thereby reducing the possibility of cross infection. The sheath is disposable and can be discarded as a whole, thereby reducing the cost and ensuring the repeated normal use of the endoscope.

Preferably, the light rays of the divergent glass after the divergence must completely cover the channel of the measured distance L, and thus,

according to the requirement that the emitted light is positioned outside an image transmission channel, H.tan (β/2). n is less than D/2, D is the distance between divergent glass and the edge of the image transmission channel, H is the thickness of a lens at the front end of the sheath, and n is the refractive index of the lens at the front end of the sheath, the parameters L, D, S, H, n, D1 and D2 are selected to be known numbers according to actual operation requirements, so that a divergent angle β is obtained, after the parameters required by the user are selected according to the actual diagnosis process, the size of the divergent angle can be calculated, so that different divergent glasses are selected, the clear effect of removing the light damage is good, and the image effect is good.

Preferably, the insertion part comprises an insertion tube and a connecting part, the connecting part comprises an outer connecting body and an inner connecting body, the outer connecting body is connected with the sheath tube, and the inner connecting body is connected with the operation part. The end structure of the insertion tube can be connected with the sheath and the operation part at the same time, and the structure is simple. The external connector is connected with the protective sleeve through threads.

More preferably, the inner connecting body is an anti-bending structure, the anti-bending structure comprises a sheath body, the sheath body is positioned outside the insertion tube, a bending spring is arranged in the sheath body and positioned between the insertion tube and the sheath body, and a stainless steel wire is arranged in the insertion tube. The endoscope insertion part and the tip part are used as parts for inserting a patient body, development in the direction that functions are complete and an insertion tube is thin and soft is pursued all the time, along with development of science and technology, an image sensor, a light source, soft forceps and the like can be made to be very small, so that the insertion tube with protection and guiding functions is made to be thinner and thinner, the outer diameter of the insertion tube can be within 3mm at present, higher requirements are provided for the insertion tube, the outer diameter of the insertion tube is thinner, the tube wall of the insertion tube is thinner, and the risk that the endoscope insertion tube is easy to fold is caused.

During the operation, the endoscope insertion tube is inserted into a human body and moves along with the cavity of the human body, and the insertion tube has bent flexibility and is not easy to damage. However, the position where the insertion tube is connected to the endoscope handle is a position where the flexibility of the insertion tube and the rigidity of the operation portion are transited, and the insertion tube is easily bent and damaged at this position according to the force transmission analysis. The stainless steel wires are embedded in the pipe wall of the insertion pipe in a spiral shape, and the stainless steel wires are used for increasing the bending resistance and supporting the pipe wall, so that the pipe wall is not easy to flatten and bend. While increasing rigidity. After the insertion tube is bent after packaging, transportation and operation, the insertion tube is returned to the vertical state.

More preferably, the protecting pipe is internally provided with an insertion pipe channel and a water device channel which are parallel to each other, and the lens is integrally formed at the front end part of the insertion pipe channel. The water channel is the channel for water and instruments. The high-transparency lens layer and the two cavities at the front end are manufactured by an integrated molding technology, so that the process of cementing and curing the lens at the front end of an old product is omitted, the manual processing cost is saved, the time of jointing and curing is saved, and the production efficiency is improved. Meanwhile, the high lens sheet layer and the endoscope insertion cavity can be perfectly sealed, and the high lens sheet layer and the endoscope insertion cavity are positioned by high-precision equipment, so that the position is accurate, firm and reliable. And the tip of the sheath is used as a part directly contacting with body fluid of a patient, if the lens is arranged at the head end of the tip by adopting a gluing process, the requirements on the non-toxicity of glue, the gluing reliability and the like are extremely high, and if the lens is carelessly dropped inside a human body, the life of the patient can be possibly threatened.

Preferably, the cross section of the insertion tube channel is in the shape of a special-shaped hole, the special-shaped hole comprises an arc surface, two sides of the arc surface are vertical surfaces, and the two vertical surfaces are connected with a horizontal surface through an arc. The endoscope insertion tube channel adopts the design of the special-shaped hole with the half-arc, and compared with a cavity channel with a full-circle section, the special-shaped hole is matched with the special-shaped profile of the endoscope insertion tube, so that the function of guiding can be achieved, and the endoscope insertion tube is prevented from rotating in the cavity channel to cause the endoscope to be unable to find the direction.

Preferably, the water passage and the instrument passage are combined into a whole through the water passage, the cross section of the water passage is in the shape of a special-shaped hole, the special-shaped hole comprises an arc surface, two sides of the arc surface are vertical surfaces, and the two vertical surfaces are connected with a horizontal surface through an arc. The water passage and the instrument passage are combined into a water device passage, and when the water device is used, the three-passage Ruhr joint is matched, so that the instrument, the water injection and the water absorption can be shared in the operation requirement. The more tiny the endoscope insertion tube inserted into the human body, the less the injury to the patient, and the quicker the postoperative recovery, so, compare in water passage and apparatus passageway separately, the design compact structure that the passageway unites two into one, can accomplish the insertion tube more tiny. The cross section of the water device channel adopts a special-shaped hole design with a half-edge circular arc, and compared with a full-circle structure, the water device channel is characterized in that a water passing space of a peripheral gap is larger when a laser beam or an instrument or the like is inserted into a cavity channel.

Preferably, one end of the protective sleeve is provided with a water device channel inlet and an insertion tube channel inlet, an acute angle is formed between the water device channel inlet and the insertion tube channel inlet, and the channel at the water device channel inlet is arc-shaped. In a medical operation, the endoscope is often matched with holmium laser, soft forceps, a stone basket and the like for use, the accessories are all made of semi-soft materials and can be inserted along with the flexible endoscope in a natural cavity of a human body in a bending mode, however, the bending angle of the instrument is limited, and if the bending angle is too small, the instrument is easy to break. The utility model discloses a hydrophone passageway import is formed by high-accuracy mould injection-molding processing, and the manufacturing of protecting pipe integration shaping, hydrophone passageway import inner wall is smooth, the step gap that no concatenation arouses. By adopting the large arc design, the instrument can be more smoothly inserted into the channel when being inserted into the channel, and the damage to the instrument is less.

Therefore, the endoscope with the disposable protecting sleeve of the utility model has the following advantages: the structure is simple, the generation of light damage can be effectively prevented, the imaging effect is improved, and doctors are helped to carry out accurate diagnosis and treatment; the high lens lamella of sheath front end portion is through moulding plastics and sheath integrated into one piece, and the security is good, and the bending structure of preventing of portion of inserting junction has improved the rigidity of endoscope, and the support effect is good.

Drawings

Fig. 1 is a schematic view showing a split type of an endoscope with a disposable sheath according to the present invention.

Fig. 2 is a schematic view of the lens mounting of the tip portion and the cannula tip portion in fig. 1.

Fig. 3 is a schematic end view of fig. 2.

Fig. 4 is a schematic cross-sectional view of the inner sheath of fig. 1.

Fig. 5 is a cross-sectional view of an insertion tube channel within the sheath tube of fig. 1.

FIG. 6 is a cross-sectional view of the water vessel passage within the sheath tube of FIG. 1

Fig. 7 is an enlarged sectional view taken at a in fig. 1.

Fig. 8 is an enlarged sectional view taken at B in fig. 1.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b):

as shown in fig. 1, an endoscope with a disposable sheath tube includes a distal end portion 9, an insertion portion 8, and an operation portion 6 connected in this order, and an operation handle 5 is attached to the operation portion 6. The protective sleeve 2 is sleeved outside the insertion part 8, one end of the protective sleeve is provided with a water device channel inlet 3 and an insertion tube channel inlet 4, the front end part 1 of the protective sleeve is provided with a lens 7, and the thickness of the lens 7 is 0.1-3 mm.

As shown in fig. 2, a light guide channel and an image transmission channel are arranged at the front end of the insertion portion 8, a light guide bundle 12 is installed in the light guide channel, a divergent glass 11 is installed at the front end of the light guide bundle 12, the divergent glass 11 is located inside the lens 7, light of the light guide bundle 12 passes through the divergent glass and then is reflected by the lens at the front end of the sheath tube to form a divergent angle β, and an image sensor 10 is installed in the image transmission channel.

As shown in FIG. 3, the diffused light of the diffusing glass 11 must fully cover the channel of the measured distance L, so that tan

According to the requirement that the emitted light rays are positioned outside an image transmission channel, H.tan (β/2). n is less than D/2, D is the distance between divergent glass and the edge of the image transmission channel, H is the thickness of a lens at the front end of the sheath, n is the refractive index of the lens at the front end of the sheath, the parameters L, D, S, H, n, D1 and D2 are selected to be known numbers according to actual operation requirements, so that a divergent angle β is obtained, and proper divergent glass is selected according to the numerical value of the divergent angle β to remove light damage.

As shown in fig. 4, 5 and 6, an insertion tube channel 13 and a water channel 14 are arranged in parallel in the protective sleeve 2, and the lens 7 is injection-molded at the front end portion of the insertion tube channel 13. The cross section of the insertion tube channel 13 is in the shape of a special-shaped hole, the special-shaped hole comprises an arc surface, two sides of the arc surface are vertical surfaces, and the two vertical surfaces are connected with a horizontal surface through an arc. The water passage 14 integrates the water passage and the instrument passage, and the cross section of the water passage 14 is also in the shape of a special-shaped hole.

As shown in fig. 7, an acute angle is formed between the inlet 3 of the water device channel at one end of the protecting sleeve and the inlet 4 of the inserting tube channel, and the channel at the inlet 3 of the water device channel is arc-shaped. By adopting the large arc design, the instrument 15 can be inserted into the channel more smoothly and the damage to the instrument 15 is less when the instrument 15 is inserted into the channel.

As shown in fig. 8, the insertion portion includes an insertion tube 18 and a connection portion, the connection portion includes an outer connection body 16 and an inner connection body, the outer connection body 16 is connected to the sheath tube by a screw, and the inner connection body is connected to the operation portion 6. The in-connection body is for preventing the structure of buckling, prevents that the structure of buckling includes the sheath body 17, and the sheath body 17 is located outside the insert tube 18, is equipped with the spring 19 of buckling in the sheath body 17, and the spring 19 of buckling is located between insert tube 18 and the sheath body 17, has stainless steel wire 20 to be the heliciform in the pipe wall of insert tube 18 and inlays, has effectively prevented stress concentration, improves anti ability of buckling.

Claims

1. The utility model provides an endoscope with disposable protecting pipe, includes insertion portion and operating portion, has cup jointed the protecting pipe outside insertion portion, its characterized in that: the front end of the protective sleeve is provided with a lens, the front end of the insertion part is provided with a light guide channel and an image transmission channel, a light guide beam is arranged in the light guide channel, the front end of the light guide beam is provided with divergent glass, the divergent glass is positioned on the inner side of the lens, light of the light guide beam is reflected by the lens at the front end of the protective sleeve after the divergent glass, and the reflected light is positioned outside the image transmission channel.

2. An endoscope with a disposable sheath according to claim 1, characterized in that: the light rays of the divergent glass after the divergence must completely cover the channel of the measured distance L, and therefore,

wherein L is the distance between the front end of the sheath and the inspection target, S is the diameter of the circle where the inspection target is located, D is the diameter of the light guide beam, D1 is the transverse distance of the light guide beam from the center, D2 is the longitudinal distance of the light guide beam from the center, and according to the requirement that the emitted light is located outside the image transmission channel, H.tan (β/2). n is less than D/2, and D is the divergent glass and the image transmission channelH is the thickness of the lens at the front end of the sheath, n is the refractive index of the lens at the front end of the sheath, and the parameters L, D, S, H, n, D1, D2 are selected as known numbers according to actual operation requirements, so that the divergence angle β is obtained.

3. An endoscope with a disposable sheath according to claim 1, characterized in that: the inserting part comprises an inserting pipe and a connecting part, the connecting part comprises an outer connecting body and an inner connecting body, the outer connecting body is connected with the protecting sleeve, and the inner connecting body is connected with the operating part.

4. An endoscope with a disposable sheath according to claim 3, characterized in that: the inner connecting body is of an anti-bending structure, the anti-bending structure comprises a sheath body, the sheath body is located outside the insertion tube, a bending spring is arranged in the sheath body and located between the insertion tube and the sheath body, and a stainless steel wire is arranged in the insertion tube.

5. An endoscope with a disposable sheath according to any one of claims 1 to 4, characterized in that: the protective sleeve is internally provided with an insertion pipe channel and a water device channel which are parallel to each other, and the lens is integrally formed at the front end part of the insertion pipe channel.

6. An endoscope with a disposable sheath according to claim 5, characterized in that: the cross section of the insertion pipe channel is in the shape of a special-shaped hole, the special-shaped hole comprises an arc surface, two sides of the arc surface are vertical surfaces, and the two vertical surfaces are connected with a horizontal surface through an arc.

7. An endoscope with a disposable sheath according to claim 5, characterized in that: the water passage and the instrument passage are combined into a whole through the water passage, the cross section of the water passage is in the shape of a special-shaped hole, the special-shaped hole comprises an arc surface, two sides of the arc surface are vertical surfaces, and the two vertical surfaces are connected with a horizontal plane through an arc.

8. An endoscope with a disposable sheath according to any one of claims 1 to 4, characterized in that: one end of the protective sleeve is provided with a water device channel inlet and an insertion tube channel inlet, an acute angle is arranged between the water device channel inlet and the insertion tube channel inlet, and the channel at the water device channel inlet is arc-shaped.