阅读说明：本技术 一种器械通道和出水通道复用的内窥镜 (Endoscope with instrument channel and water outlet channel for multiplexing ) 是由 欧阳辉 冼平原 高歌 彭嘹 于 2020-07-10 设计创作，主要内容包括：本发明公开一种器械通道和出水通道复用的内窥镜,将进出水通道与器械通道结合,无需再单独设置进出水通道,因此能够大大减小内窥镜鞘管的尺寸,能够将鞘管的外径做到4mm以下,使得内窥镜通过自然通道就可以进入人体内,增加了更多内窥镜的适用场合,无需进行扩宫手术,无需对患者实施麻醉,节约时间和费用,减少患者的痛苦及副作用。(The invention discloses an endoscope with a multiplexing instrument channel and a water outlet channel, wherein the water inlet channel and the water outlet channel are combined without independently arranging the water inlet channel and the water outlet channel, so that the size of a sheath tube of the endoscope can be greatly reduced, the outer diameter of the sheath tube can be below 4mm, the endoscope can enter a human body through a natural channel, more applicable occasions of the endoscope are increased, a uterus dilating operation is not needed, anesthesia is not needed to be performed on a patient, the time and the cost are saved, and the pain and the side effect of the patient are reduced.)

1. An endoscope with an instrument channel and a water outlet channel for multiplexing is characterized by comprising a sheath tube, wherein the sheath tube comprises a sheath tube front end and a sheath tube tail end connected with the sheath tube front end;

the sheath pipe front end inserts in the human chamber way, the sheath pipe front end includes: the surgical instrument comprises an inner sheath and an outer sheath sleeved outside the inner sheath, wherein a gap is formed between the inner sheath and the outer sheath, the inner sheath is provided with a channel along the axis direction, and a surgical instrument enters a cavity of a human body through the channel;

the sheath tail end includes: the water inlet is arranged on the shell, and the water outlet is arranged on the shell; a gap is arranged between the pipe sleeve and the shell, an opening for liquid to flow is arranged between the pipe sleeve and the shell, one end of the outer sheath is inserted into the shell and is fixedly connected with the shell, and one end of the inner sheath is inserted into the pipe sleeve and is fixedly connected with the pipe sleeve;

liquid enters the shell from the water inlet and flows into a human body cavity along a gap between the inner sheath and the outer sheath; liquid in the human body cavity channel flows out to the inside of the shell from a gap between the inner sheath and the surgical instrument and flows out to the outside from the water outlet.

2. The endoscope with multiplexing of instrument channel and water outlet channel of claim 1, wherein said sheath tail end further comprises: the first sealing ring is arranged between the shell and the pipe sleeve, and the second sealing ring is arranged between the shell and the pipe sleeve;

the second sealing washer is close to the head end setting of sheath pipe, first sealing washer is close to the tail end setting of sheath pipe, the delivery port is located first sealing washer with between the second sealing washer, the water inlet is located second sealing washer side, just the water inlet is close to sheath pipe front end.

3. The endoscope with the multiplexing of the instrument channel and the water outlet channel as claimed in claim 2, wherein the sleeve is provided with a first sealing groove corresponding to the first sealing ring, the first sealing ring is embedded into the first sealing groove, the sleeve is provided with a second sealing groove corresponding to the second sealing ring, and the second sealing ring is embedded into the second sealing groove.

4. The endoscope with multiplexing of instrument channel and water outlet channel of claim 3, wherein the outer diameter of the outer sheath is 3.2-3.8mm, and the inner diameter of the outer sheath is 2.7-3.3 mm.

5. The endoscope with multiplexing of instrument channel and water outlet channel of claim 4, wherein the outer diameter of the inner sheath is 2.2mm-2.6mm, and the inner diameter of the inner sheath is 1.8-2 mm.

6. The endoscope with multiplexing of instrument channel and water outlet channel of claim 3, wherein the head end of the front end of the sheath is straight.

7. The endoscope with the multiplexing of the instrument channel and the water outlet channel as claimed in claim 3, wherein the head end of the front end of the sheath tube is provided with a curved portion, and the curved portion is in a circular arc shape.

8. The endoscope with multiplexing of instrument channel and water outlet channel of claim 3, wherein the inner sheath and the outer sheath are made of stainless steel.

Technical Field

The invention relates to the field of medical instruments, in particular to an endoscope with an instrument channel and a water outlet channel multiplexed.

Background

The endoscope is an important instrument which can be sent into a human cavity for visual inspection and surgical treatment. The kit is applied to a plurality of fields such as examination of gastrointestinal diseases, examination of pancreas and biliary tract diseases, examination of urinary tract and the like. Endoscopes for imaging the inside of a human body, a device, or a structure are widely used in the medical field or the industrial field. Be equipped with the camera module on the endoscope, the inside image is shot to the camera module, with image information send to the display screen on so that medical personnel observe.

The known existing endoscope uses a separate water inlet and outlet channel, when an operation is required or an examination is required, for example, a uterus is required to be dilated in a hysteroscopy operation, the water inlet and outlet channel of the endoscope needs to be connected into a uterus dilator, then physiological saline or carbon dioxide is injected into the uterus through the water inlet channel and is pumped out through the water inlet and outlet channel, and a certain pressure is maintained to dilate the uterus, so that the operation or the observation is facilitated.

In the use of the traditional endoscope, the size allows the arrangement of a separate water inlet channel and a water outlet channel, but the diameter of the traditional endoscope is possibly beyond the natural channel due to the narrow natural channel in some areas of the human body, so the traditional endoscope needs to be expanded by means of operation, and the patient needs anesthesia, and the anesthesia has long time, great harm, great side effect and high cost.

Accordingly, the prior art is deficient and needs improvement.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide an endoscope with a multiplex instrument channel and a multiplex water outlet channel, so that the size of the endoscope is reduced.

The technical scheme of the invention is as follows: the endoscope with the instrument channel and the water outlet channel for multiplexing comprises a sheath tube, wherein the sheath tube comprises a sheath tube front end and a sheath tube tail end connected with the sheath tube front end;

the sheath pipe front end inserts in the human chamber way, the sheath pipe front end includes: the surgical instrument comprises an inner sheath and an outer sheath sleeved outside the inner sheath, wherein a gap is formed between the inner sheath and the outer sheath, the inner sheath is provided with a channel along the axis direction, and a surgical instrument enters a cavity of a human body through the channel;

the sheath tail end includes: the water inlet is arranged on the shell, and the water outlet is arranged on the shell; a gap is arranged between the pipe sleeve and the shell, an opening for liquid to flow is arranged between the pipe sleeve and the shell, one end of the outer sheath is inserted into the shell and is fixedly connected with the shell, and one end of the inner sheath is inserted into the pipe sleeve and is fixedly connected with the pipe sleeve;

liquid enters the shell from the water inlet and flows into a human body cavity along a gap between the inner sheath and the outer sheath; liquid in the human body cavity channel flows out to the inside of the shell from a gap between the inner sheath and the surgical instrument and flows out to the outside from the water outlet.

Further, the sheath tail end further comprises: the first sealing ring is arranged between the shell and the pipe sleeve, and the second sealing ring is arranged between the shell and the pipe sleeve;

the second sealing washer is close to the head end setting of sheath pipe, first sealing washer is close to the tail end setting of sheath pipe, the delivery port is located first sealing washer with between the second sealing washer, the water inlet is located second sealing washer side, just the water inlet is close to sheath pipe front end.

Further, the sleeve is provided with a first sealing groove corresponding to the first sealing ring, the first sealing ring is embedded into the first sealing groove, the sleeve is provided with a second sealing groove corresponding to the second sealing ring, and the second sealing ring is embedded into the second sealing groove.

Further, the outer diameter of the outer sheath is 3.2-3.8mm, and the inner diameter of the outer sheath is 2.7-3.3 mm.

Further, the outer diameter of the inner sheath is 2.2mm-2.6mm, and the inner diameter of the inner sheath is 1.8-2 mm.

Further, the head end of the front end of the sheath tube is flat and straight.

Furthermore, the head end of the front end of the sheath tube is provided with a bending part which is arc-shaped.

Further, the inner sheath and the outer sheath are made of stainless steel.

Adopt above-mentioned scheme, combine business turn over water passageway and apparatus channel, need not to set up business turn over water passageway alone again, consequently can reduce the size of endoscope sheath pipe greatly, can accomplish below 4mm with the external diameter of sheath pipe for the endoscope just can get into the human body through natural passageway, has increased the application occasion of more endoscopes, need not to expand the palace operation, need not to implement the anesthesia to the patient, save time and expense reduce patient's misery and side effect.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Fig. 3 is an enlarged schematic view of a portion B in fig. 1.

Detailed Description

The invention is described in detail below with reference to the figures and the specific embodiments.

Referring to fig. 1 to 3, the present invention provides an endoscope with an instrument channel and a water outlet channel multiplexed, which includes a sheath, wherein the sheath includes a sheath front end 1 and a sheath tail end 2 connected to the sheath front end 1.

Sheath pipe front end 1 inserts in the human body chamber way, sheath pipe front end 1 includes: an inner sheath 11 and an outer sheath 12 fitted over the inner sheath 11. The inner sheath 11 and the outer sheath 12 are made of stainless steel. A gap is arranged between the inner sheath 11 and the outer sheath 12, and the gap does not need to be too large, so that the liquid circulation can be ensured. The inner sheath 11 is provided with a channel along the axial direction, the surgical instrument 100 enters the human body cavity through the channel, the external dimension of the surgical instrument 100 is smaller than the dimension of the channel, when the surgical instrument 100 passes through the channel, a gap is reserved between the surgical instrument 100 and the channel, and liquid can flow through the gap between the surgical instrument 100 and the channel.

Specifically, the outer diameter of the outer sheath 12 is 3.2 to 3.8mm, and the inner diameter of the outer sheath 12 is 2.7 to 3.3 mm. The outer diameter of the inner sheath 11 is 2.2mm-2.6mm, and the inner diameter of the inner sheath 11 is 1.8-2 mm. In the present embodiment, the outer diameter of the outer sheath 12 is 3.5mm, the inner diameter of the outer sheath 12 is 3mm, the outer diameter of the inner sheath 11 is 2.5mm, the inner diameter of the inner sheath 11 is 2mm, and the surgical instrument 100 passes through the inner sheath 11 to perform a sampling operation or the like on a human tissue, and the size of the surgical instrument 100 of the present embodiment supports a surgical instrument 100 of 5fr or less.

The sheath end 2 comprises: the water-saving device comprises a shell 21, a pipe sleeve 22 arranged in the shell 21, a water inlet 23 arranged on the shell 21 and a water outlet 24 arranged on the shell 21. The shell 21 is made of plastic, and a gap is formed between the pipe sleeve 22 and the shell 21, and the size of the gap is ensured to be enough for liquid to pass through. An opening 25 for the passage of liquid is provided between the sleeve 22 and the housing 21. One end of the outer sheath 12 is inserted into the outer casing 21 and is tightly connected with the outer casing 21, and one end of the inner sheath 11 is inserted into the sleeve 22 and is tightly connected with the sleeve 22.

The liquid enters the housing 21 from the water inlet 23, then flows into the body cavity along the gap between the inner sheath 11 and the outer sheath 12, and when the liquid in the body cavity reaches a certain pressure, the liquid in the body cavity flows out into the housing 21 from the gap between the inner sheath 11 and the surgical instrument 100, and then flows out to the outside from the water outlet 24.

The sheath tail end 2 further comprises: a first sealing ring 26 provided between the housing 21 and the socket 22, and a second sealing ring 27 provided between the housing 21 and the socket 22.

The second sealing ring 27 is disposed near the head end of the sheath, and the first sealing ring 26 is disposed near the tail end of the sheath, in this embodiment, the head end of the sheath refers to the right end of the endoscope in fig. 1, and the tail end of the sheath refers to the left end of the endoscope in fig. 1. The water outlet 24 is located the first sealing ring 26 and between the second sealing ring 27, the water inlet 23 is located at the side of the second sealing ring 27, and the water inlet 23 is close to the sheath front end 1.

The liquid enters the housing 21 from the water inlet 23, and the liquid will not flow to the tail end 2 of the sheath tube but only flow towards the front end 1 of the sheath tube under the blocking of the second sealing ring 27, and then the liquid flows into the body cavity through the gap between the outer sheath 12 and the inner sheath 11. When the liquid in the body cavity reaches a certain pressure, the liquid flows out into the pipe sleeve 22 from the gap between the inner sheath 11 and the surgical instrument 100, and then flows out into the shell 21 from the opening 25 of the pipe sleeve 22, and due to the blocking of the first sealing ring 26 and the second sealing ring 27, the liquid only flows towards the water outlet 24 in the shell 21, and finally flows out to the outside from the water outlet 24 on the shell 21.

The sleeve 22 is provided with a first sealing groove corresponding to the first sealing ring 26, the first sealing ring 26 is embedded into the first sealing groove, the sleeve 22 is provided with a second sealing groove corresponding to the second sealing ring 27, and the second sealing ring 27 is embedded into the second sealing groove.

In this embodiment, the head end of the sheath front end 1 is flat. Preferably, the head end of the sheath front end 1 may also be provided with a curved portion, the curved portion is arc-shaped, the arc of the arc-shaped arc is small, the head end of the sheath front end 1 is provided with the curved portion, and when the sheath rotates, the interaction range of the curved portion is larger, so that the range of the sheath can be increased, and the range of the surgical instrument 100 can move can be increased.

In conclusion, the water inlet and outlet channel is combined with the instrument channel, and the water inlet and outlet channel does not need to be independently arranged, so that the size of the sheath tube of the endoscope can be greatly reduced, the outer diameter of the sheath tube can be less than 4mm, the endoscope can enter the human body through the natural channel, the application occasions of more endoscopes are increased, the uterus dilating operation is not needed, the anesthesia is not needed to be carried out on a patient, the time and the cost are saved, and the pain and the side effect of the patient are reduced.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.