Endoscope sheath catheter

Abstract

The endoscope sheath catheter comprises a catheter body with a near-end side and a far-end side, and a first channel, a second channel, a third channel and a fourth channel are arranged in the catheter body from the near-end side to the far-end side in an extending mode; the first channel is configured to allow the endoscope to pass through, one end, close to the far-end side, of the first channel is sealed by the lens, and the lens allows light transmission; the second channel is configured to allow the diagnosis and treatment instrument to pass through and extend out of the tube body from one end, close to the far-end side, of the second channel; the third channel is configured to allow the first fluid to circulate, and the first fluid flows out of the pipe body from one end, close to the far-end side, of the third channel; the fourth channel is configured to allow the second fluid to flow through and flow out of the pipe body from the end, close to the near-end side, of the fourth channel.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an endoscope sheath catheter. Background Art

[0002] With the development of medical technology, the types and products of medical devices are increasing. At present, medical endoscopes have been widely used in the fields of inspection, diagnosis, and treatment of anorectal, esophageal, stomach, ENT and other parts of the human body. Due to its advantages such as intuitive observation, accurate results, and little damage to tissues, it has become an indispensable means in modern medicine. Using endoscopes to conduct inspections and surgeries deep into the patient's body has become a very common medical technology. Due to the particularity of its materials and structure, endoscopes cannot be sterilized by traditional high-pressure steam and need to be sterilized and disinfected with chemical reagents, which makes medical staff exposed to harmful chemical reagents for a long time when operating with the endoscope in hand.

[0003] In the prior art, a sheath is provided at the end of the endoscope head to prevent the end of the endoscope from contacting pathogens and causing bacterial infection. However, during diagnosis and treatment, medical staff need to hold the endoscope, which makes the handle and operating part of the endoscope still very susceptible to bacterial infection, exposing medical staff to the risk of bacterial infection.

[0004] Therefore, there is an urgent need for an endoscope sheath catheter that can prevent the endoscope from directly contacting the human body and thereby reduce the risk of infection. Summary of the invention

[0005] The utility model provides an endoscope sheath catheter, which can be used in conjunction with various types of endoscopes and diagnostic and treatment instruments, thereby achieving the purpose of aseptic isolation without direct contact between the endoscope and the human body.

[0006] In order to achieve the above-mentioned purpose of the invention, the utility model provides the following technical solutions:

[0007] An endoscope sheath catheter comprises a tube body having a proximal side and a distal side, wherein a first channel, a second channel, a third channel and a fourth channel are respectively extended from the proximal side to the distal side inside the tube body; the first channel is configured to allow an insertion portion of an endoscope to pass through, and an end of the first channel close to the distal side is sealed by a lens, and the lens allows light to pass through; the second channel is configured to allow diagnostic and treatment instruments to pass through, and extend out of the tube body from an end of the second channel close to the distal side; the third channel is configured to allow a first fluid to flow, and flow out of the tube body from an end of the third channel close to the distal side; the fourth channel is configured to allow a second fluid to flow, and flow out of the tube body from an end of the fourth channel close to the proximal side.

[0008] Preferably, one end of the first channel close to the proximal end is arranged at the end of the tube body, and one end of the second channel, the third channel and the fourth channel close to the proximal end are respectively arranged at different positions on the outer circumference of the tube body.

[0009] Preferably, one end of the first channel close to the proximal end expands outward to form a tapered connecting opening.

[0010] Preferably, one end of the second channel close to the proximal side is connected to one end of the diagnostic and treatment instrument connecting tube at a certain angle, and the other end of the diagnostic and treatment instrument connecting tube allows the diagnostic and treatment instrument to pass through.

[0011] Preferably, the diagnostic and treatment instrument connecting tube is connected to the outer periphery of the tube body by ultrasonic welding, and is communicated with an end of the second channel close to the proximal end.

[0012] Preferably, one end of the third channel close to the proximal end is communicated with one end of the water injection connecting pipe, and the other end of the water injection connecting pipe is connected to the water injection equipment.

[0013] Preferably, the water injection connecting pipe is connected to the outer periphery of the tube body by ultrasonic welding and is connected to one end of the third channel close to the proximal end; the water injection connecting pipe includes a water injection hose and a Luer connector connected to the water injection hose.

[0014] Preferably, one end of the fourth channel close to the proximal end is communicated with one end of the suction connecting tube, and the other end of the suction connecting tube is connected to the suction device.

[0015] Preferably, the suction connecting tube is connected to the outer periphery of the tube body by ultrasonic welding and is connected to one end of the fourth channel close to the proximal end; the suction connecting tube includes a suction hose and a Luer connector connected to the suction hose.

[0016] Preferably, a film is attached to the surface of the lens to prevent distortion of the image reflected by the lens.

[0017] Preferably, graduations are provided on the outer circumference of the tube body.

[0018] The utility model provides an endoscope sheath catheter, which is provided with a multi-cavity separation structure of a first channel, a second channel, a third channel and a fourth channel, and a lens is provided on the distal side of the first channel to seal it. The lens sealing structure can facilitate the operation of the endoscope on the one hand, and can seal the first channel on the other hand, so that the endoscope does not come into direct contact with the human body, that is, the purpose of aseptic isolation of the endoscope is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a stereoscopic view and a partially enlarged view of the endoscope sheath catheter in the embodiment of the utility model.

[0021] Figure 2 It is a stereoscopic diagram of the use of an endoscope sheath catheter in conjunction with an endoscope and a diagnostic and treatment instrument in an embodiment of the utility model. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further specifically described below through examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the implementation mode of the utility model with reference to the accompanying drawings is intended to explain the overall inventive concept of the utility model and should not be construed as a limitation of the utility model.

[0023] In addition, in the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the accompanying drawings.

[0024] It should be noted that the wording "comprising" does not exclude other elements or steps, and the wording "one" or "an" does not exclude a plurality; the orientation or positional relationship indicated by "distal end", "proximal end", "interior", "exterior", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. "First" and "second" are used to distinguish the names of different components rather than for ranking or indicating importance or primary and secondary distinctions. In addition, any element number in the claims should not be understood as limiting the scope of the present disclosure.

[0025] According to an overall technical concept of the utility model, an endoscope sheath catheter comprises a tube body having a proximal side and a distal side, wherein a first channel, a second channel, a third channel and a fourth channel are respectively extended from the proximal side to the distal side inside the tube body; the first channel is configured to allow an insertion portion of an endoscope to pass through, and an end of the first channel close to the distal side is sealed by a lens, and the lens allows light to pass through; the second channel is configured to allow diagnostic and treatment instruments to pass through, and extend out of the tube body from an end of the second channel close to the distal side; the third channel is configured to allow a first fluid to flow, and flow from an end of the third channel close to the distal side to the outside of the tube body; the fourth channel is configured to allow a second fluid to flow, and flow out of the tube body from an end of the fourth channel close to the proximal side.

[0026] like Figure 1-Figure 2 As shown, in an embodiment of the utility model, an endoscope sheath catheter 100 includes a tube body 110 having a proximal side and a distal side. A plurality of channels separated by multiple cavities are arranged inside the tube body 110. Specifically, a first channel (i.e., an endoscope channel) 120, a second channel (i.e., a diagnostic instrument channel) 130, a third channel (i.e., a water injection channel) 140, and a fourth channel (i.e., a suction channel) 150 are respectively arranged extending from the proximal side to the distal side. As an example, the tube body 110 can be made by a polymer extrusion process.

[0027] In an embodiment of the utility model, the first channel 120 is configured to allow the insertion portion of the endoscope 200 to pass through, that is, the insertion portion of the endoscope 200 can be inserted from the proximal side of the first channel 120 and pass through the extended first channel 120. The end of the first channel 120 close to the distal side is sealed by the lens 121, that is, the lens 121 seals the end of the first channel 120 close to the distal side, thereby avoiding direct contact between the endoscope 200 and the human body, so as to achieve the purpose of aseptic isolation. As an example, the lens 121 can be connected to the distal side of the first channel 120 by a gluing process. The lens 121 allows light to pass through, thereby allowing the light emitted by the endoscope 200 to pass through the lens 121 to irradiate the human tissue, and reflect light or images through the lens 121. In some preferred embodiments, a layer of film is attached to the surface of the lens 121, and the function of this film is to prevent the reflected image of the light of the light source of the endoscope 200 from being distorted when the endoscope 200 observes the lesion position. For example, the lens 121 is made of polymer material injection molding, and a layer of film is attached to the surface by vacuum evaporation process. The endoscope 200 includes an insertion part and an operation part, the insertion part can be inserted into the first channel 120, and the operation part is outside the tube body 110 for medical staff to operate the endoscope.

[0028] In some preferred embodiments, in order to facilitate the arrangement of each channel inside the tube body 110, the portion of each channel close to the distal side is arranged in a multi-cavity separated structure inside the tube body 110, while the portion close to the proximal side is respectively arranged at different positions of the tube body 110 to facilitate operation and use by medical staff. Specifically, the end of the first channel 120 close to the proximal side is arranged at the end of the tube body 110, that is, the proximal end of the tube body 110. This structural arrangement can facilitate the insertion of the endoscope 200. The ends of the second channel 130, the third channel 140 and the fourth channel 150 close to the proximal side are respectively arranged on the periphery of the tube body 110 and are located at different positions. This structural arrangement can avoid interference between the endoscope 200, the diagnostic and treatment instrument 300, the water injection device (not shown in the figure) and the suction device (not shown in the figure).

[0029] In some preferred embodiments, the end of the first channel 120 close to the proximal side expands outward to form a tapered connection port 122. Similarly, the tube body 110 is also configured to be tapered for adaptation. The insertion portion of the endoscope 200 often has a smaller diameter at the distal end and a larger diameter at the proximal end. Therefore, the tapered connection port 122 can facilitate the insertion of the endoscope 200, and after insertion, the larger diameter portion can be placed in the tapered connection port 122 to maintain fixation.

[0030] In the embodiment of the present invention, the second channel 130 is configured to allow the diagnostic and treatment instrument 300 to pass through and extend out of the tube body 110 from an end of the second channel 130 close to the distal end.

[0031] In some more preferred embodiments, one end of the second channel 130 near the proximal side is connected to one end of the diagnostic instrument connecting tube 131 at a certain angle, and the other end of the diagnostic instrument connecting tube 131 allows the diagnostic instrument 300 to pass through. The diagnostic instrument 300, for example, can be a biopsy forceps, an electric knife, etc. For example, the diagnostic instrument connecting tube 131 is connected to the outer periphery of the tube body 110 by ultrasonic welding. After the connection, the connecting tube can be connected to the end of the second channel 130 near the proximal side, that is, it can be connected to the entire second channel 130.

[0032] In the embodiment of the present invention, the third channel 140 is configured to allow the first fluid to flow and flow out of the tube body 110 from the end of the third channel 140 close to the distal end. The first fluid can be saline, which is transmitted to the human body through the third channel 140 and can be used to flush and clearly observe tissues.

[0033] In some more preferred embodiments, one end of the third channel 140 close to the proximal side is communicated with one end of the water injection connecting pipe 141, and the other end of the water injection connecting pipe 141 is connected to the water injection equipment.

[0034] Preferably, the water injection connection pipe 141 is connected to the outer periphery of the tube body 110 by ultrasonic welding. After the connection, the connection pipe can be connected to the end of the third channel 130 close to the proximal side, that is, it can be connected to the entire third channel 140. The water injection connection pipe 141 includes a water injection hose 141a and a Luer connector 141b connected to the water injection hose 141a. The Luer connector 141b can be a standard commercially available Luer connector.

[0035] In the embodiment of the present invention, the fourth channel 150 is configured to allow the second fluid to flow and flow out of the tube body 110 from one end of the fourth channel 150 close to the proximal side. The second fluid is the liquid of human tissue, which is sucked out of the body to clearly observe the tissue.

[0036] In some more preferred embodiments, one end of the fourth channel 150 close to the proximal side is communicated with one end of the suction connection tube 151, and the other end of the suction connection tube 151 is connected to the suction device.

[0037] Preferably, the suction connection tube 151 is connected to the outer periphery of the tube body 110 by ultrasonic welding. After the connection, the connection tube is connected to the end of the fourth channel 150 close to the proximal side, that is, it is connected to the entire fourth channel 140. The suction connection tube 151 includes a suction hose 151a and a Luer connector 151b connected to the suction hose 151a. The Luer connector 151b can be a standard commercially available Luer connector.

[0038] In the embodiment of the utility model, a scale can be set on the outer circumference of the tube body 110 to facilitate the auxiliary medical staff to observe the insertion size during use. As an example, the scale can be made by printing.

[0039] An embodiment of the utility model provides an endoscope sheath catheter, which is provided with a multi-cavity separation structure of a first channel, a second channel, a third channel and a fourth channel, and a lens is provided on the distal side of the first channel to seal it. The lens sealing structure can facilitate the operation of the endoscope on the one hand, and can seal the first channel on the other hand, thereby achieving the endoscope without direct contact with the human body, that is, achieving the purpose of sterile isolation of the endoscope.

[0040] The clinical use of the endoscope sheath catheter in the embodiment of the utility model will be described in detail below with reference to the accompanying drawings.

[0041] First, insert the endoscope sheath catheter into the human body exploration site, such as the uterine cavity, bladder and other sites, and then connect the water injection device to the water injection connection tube, and connect the suction device to the suction connection tube. Then insert the insertion part of the endoscope into the first channel (i.e., the endoscope channel). Under the exploration of the endoscope, the location of the lesion that needs to be diagnosed and treated can be clearly identified, and then the relevant diagnostic and treatment instruments are passed through the second channel (i.e., the diagnostic and treatment instrument channel) to the lesion location for diagnosis and treatment, such as injection, clamping, electroresection, etc. When it is necessary to cooperate with flushing to keep the endoscope field of view clear, water is injected into the third channel (i.e., the water injection channel) through the switch control of the water injection device; if there is too much water or other liquid at the lesion site and it needs to be sucked, the switch control of the suction device is used to suck it out of the body from the fourth channel (i.e., the suction channel).

[0042] The endoscope sheath catheter of the utility model can meet the needs of diagnosis and treatment, and the endoscope is placed in the first channel during the whole process. The front end of the sheath catheter is sealed with a lens, the endoscope does not directly contact human tissue, the water injection and suction required for diagnosis and treatment are separately set channels, and all diagnostic and treatment instruments pass through the second channel (i.e., the diagnostic and treatment instrument channel), which can ensure that the inner cavity channel of the endoscope will not be contaminated, and the risk of substandard disinfection and sterilization during cleaning will be reduced.

[0043] When the diagnosis and treatment work is completed, the endoscope and the endoscope sheath catheter are pulled out of the human body together, and then the water injection connecting tube and the suction connecting tube are separated from the water injection equipment and the suction equipment respectively, and the endoscope and diagnostic and treatment instruments are withdrawn from the first channel (i.e., the endoscope channel) and the second channel (i.e., the diagnostic and treatment instrument channel) respectively to complete the entire diagnosis and treatment process.

[0044] It should be noted that the connection sequence of the endoscope sheath catheter and the endoscope, diagnostic and treatment equipment, water injection equipment, and suction equipment is not limited and can be connected by medical staff according to actual needs.

[0045] Those skilled in the art can understand that the embodiments described above are exemplary and can be improved by those skilled in the art. The structures described in various embodiments can be freely combined without causing conflicts in structure or principle.

[0046] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to exemplify the preferred implementation modes of the present invention and should not be construed as limiting the present invention.

[0047] Although some embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the present general inventive concept, the scope of which is defined by the claims and their equivalents.

Claims

1. An endoscope sheath catheter, comprising a tube body having a proximal end and a distal end, characterized in that: A first channel, a second channel, a third channel and a fourth channel are respectively provided inside the tube body extending from the proximal end to the distal end; The first channel is configured to allow an insertion portion of an endoscope to pass therethrough, and one end of the first channel close to the distal end is sealed by a lens, and the lens allows light to pass through; The second channel is configured to allow a diagnostic and therapeutic instrument to pass through and extend out of the tube body from an end of the second channel close to the distal end; The third channel is configured to allow the first fluid to flow through and flow from one end of the third channel close to the distal end to the outside of the tube body; The fourth channel is configured to allow the second fluid to flow through and flow out of the tube body from an end of the fourth channel close to the proximal end.

2. An endoscope sheath catheter according to claim 1, characterized in that: One end of the first channel close to the proximal end is arranged at the end of the tube body, and one end of the second channel, the third channel and the fourth channel close to the proximal end are respectively arranged at different positions on the outer circumference of the tube body.

3. An endoscope sheath catheter according to claim 2, characterized in that: One end of the first channel close to the proximal end side expands outward to form a tapered connecting opening.

4. An endoscope sheath catheter according to claim 2, characterized in that: One end of the second channel close to the proximal end is connected to one end of a diagnostic and treatment instrument connecting tube at a certain angle, and the other end of the diagnostic and treatment instrument connecting tube allows the diagnostic and treatment instrument to pass through.

5. An endoscope sheath catheter according to claim 4, characterized in that: The diagnostic and treatment instrument connecting tube is connected to the outer periphery of the tube body by ultrasonic welding, and is communicated with an end of the second channel close to the proximal end.

6. An endoscope sheath catheter according to claim 2, characterized in that: One end of the third channel close to the proximal end is communicated with one end of a water injection connecting pipe, and the other end of the water injection connecting pipe is connected to a water injection device.

7. An endoscope sheath catheter according to claim 6, characterized in that: The water injection connecting pipe is connected to the outer periphery of the tube body by ultrasonic welding, and is communicated with one end of the third channel close to the proximal end; the water injection connecting pipe includes a water injection hose and a Luer connector connected to the water injection hose.

8. An endoscope sheath catheter according to claim 2, characterized in that: One end of the fourth channel close to the proximal end is communicated with one end of a suction connection tube, and the other end of the suction connection tube is connected to a suction device.

9. An endoscope sheath catheter according to claim 8, characterized in that: The suction connection tube is connected to the outer periphery of the tube body by ultrasonic welding, and is connected to one end of the fourth channel close to the proximal end; the suction connection tube includes a suction hose and a Luer connector connected to the suction hose.

10. An endoscope sheath catheter according to claim 1, characterized in that: A film is attached to the surface of the lens to prevent the image reflected by the lens from being distorted.

11. An endoscope sheath catheter according to claim 1, characterized in that: The outer circumference of the tube body is provided with scales.

Images