Enema cannula and visual enema device

Abstract

The invention relates to the technical field of medical instruments, in particular to an enema cannula and a visual enema device. The enema cannula comprises a liquid inlet adaptive end, a middle tube section and a liquid outlet adaptive end, the middle tube section comprises a center channel and an annular channel, the bottom end of the center channel is provided with a sealed bottom, the top end of the center channel and the head of the endoscope form sealing, and a penetrating pipeline is arranged between the center channel and the annular channel; the annular channel is arranged in the center channel to allow the endoscope to penetrate out of the enema cannula from the center channel, the annular channel is used for providing fluid paths for enema liquid at the liquid inlet adaptive end and the liquid outlet adaptive end, and the liquid outlet adaptive end is fixed to the annular channel and provided with one or more liquid outlets surrounding the center channel. According to the enema device, on one hand, the pipeline space is fully utilized, cleaning is uniform, and the view angle of the lens is not affected; and on the other hand, the device has the advantage of spraying according to which spraying is conducted, operation is easy, and accurate positioning and cleaning can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to an enema cannula and a visual enema device. Background Art

[0002] Intestinal cleansing is a critical step in medical diagnosis, colonoscopy, preoperative preparation, and intestinal health management. Traditional enema devices rely on operator experience and lack real-time visualization of the intestinal tract, which can easily lead to perforation or incomplete cleaning. Furthermore, enema and endoscopy typically require separate procedures, resulting in low efficiency and significant patient discomfort. To address these issues, those skilled in the art have developed visual enema devices.

[0003] Patent application number CN201320852445.3 discloses a visual enema for treating ulcerative colitis. The enema has a fiber hose with scale lines on the wall. The fiber hose has three chamber channels. The first channel is provided with a fiber infusion tube, the second channel is provided with a fiber hose, the end of the fiber hose inserted into the anus is provided with a camera and a light source, and the end of the third channel is provided with an anesthetic liquid nozzle.

[0004] Patent application number 202420369345.3 discloses a handheld visual enema device, comprising a drug delivery device, a drug storage tank, a first catheter, a display screen, a drug suction tube, and a thermocouple. The drug delivery device is arranged above the drug storage tank, and a drug suction tube and a thermocouple are arranged at the bottom of the drug delivery device. Both the drug suction tube and the thermocouple extend into the drug storage tank. The display screen is arranged above the drug delivery device. One end of the first catheter used for enema delivery is provided with an endoscope lens, and the other end is provided with two interfaces. The interface for imaging is connected to the display screen, and the interface for drug supply is connected to the drug outlet of the drug delivery device. Among them, the first catheter 3 is a hollow structure, with a drug liquid drainage pipe of the first catheter 3 in the middle. The drainage pipe extends from the end away from the endoscope lens 4 and is plugged into the drug outlet 18 of the drug delivery device 1; the signal transmission structure of the endoscope lens 4 is wrapped around the outer periphery of the first catheter 3 and is merged into an interface connected to the display screen 5 at the end away from the endoscope lens 4.

[0005] In both patents, the camera channel and liquid channel are arranged side by side. This, on the one hand, results in low space utilization, limiting the size of the liquid channel and reducing infusion efficiency. On the other hand, the liquid channel adopts a single path layout, which can easily lead to insufficient local flushing due to uneven hydraulic pressure. Therefore, the present invention provides a visual enema device that fully utilizes the pipeline space and provides uniform flushing. Summary of the Invention

[0006] The embodiments of the present invention aim to provide an enema cannula and a visual enema device to solve the problems of low pipe space utilization and uneven flushing of the enema cannula in the visual enema device in the prior art.

[0007] To solve the above technical problems, the embodiments of the present invention provide the following technical solutions:

[0008] In a first aspect, an embodiment of the present invention provides an enema cannula, comprising a liquid inlet adapter end, an intermediate tube section, and a liquid outlet adapter end, wherein the intermediate tube section comprises a central channel for accommodating an endoscope and an annular channel arranged around the periphery of the central channel, wherein an end of the central channel close to the liquid inlet adapter end has a sealed bottom, and an end of the central channel close to the liquid outlet adapter end forms a seal with the endoscope head, a through pipe is provided between the central channel and the annular channel to allow the endoscope to pass through the central channel to the outside of the enema cannula, the annular channel is used to provide a fluid path for the enema liquid between the liquid inlet adapter end and the liquid outlet adapter end, the liquid outlet adapter end is fixed to the annular channel, and is provided with one or more liquid outlets surrounding the central channel.

[0009] Optionally, the one or more liquid outlets are symmetrically arranged around the central channel.

[0010] Optionally, the liquid outlet adapter end includes a top seat with a certain thickness, and a liquid outlet guiding channel is provided on the top seat, and the liquid outlet guiding channel communicates with the interior of the annular channel and the liquid outlet.

[0011] Optionally, the liquid outlet guiding channel guides the jetting direction of the enema liquid to deviate outwardly by a certain angle relative to the optical axis direction of the endoscope.

[0012] Optionally, a guide portion for guiding the endoscope to extend is provided in the central channel.

[0013] Optionally, a first installable sealing structure adapted to the endoscope head is provided at one end of the central channel close to the liquid outlet adapter end, and the endoscope can be detachably installed in the central channel through the first installable sealing structure.

[0014] Optionally, the top end of the central channel protrudes from the liquid outlet adapter end.

[0015] Optionally, the multiple liquid outlets are arranged in a petal-like pattern or in a spiral pattern.

[0016] In a second aspect, an embodiment of the present invention provides a visualization enema device, comprising a liquid storage tank, an endoscope, and the enema cannula described above, wherein the liquid storage tank is connected to the enema cannula, the endoscope is accommodated in the central channel of the enema cannula, the head of the endoscope forms a seal with one end of the central channel close to the liquid outlet adapter end, and the tail of the endoscope extends from the outer wall opening of the annular channel of the enema cannula.

[0017] Optionally, a pressure sensor is provided on the outer wall of the enema cannula near the liquid outlet adapter end, and a flow regulating valve is provided in the annular channel. The enema device also includes a controller, which is communicated with the pressure sensor and the flow regulating valve respectively and is configured to control the opening of the flow regulating valve based on the intestinal pressure value measured by the pressure sensor.

[0018] The beneficial effects of the embodiments of the present invention are as follows: different from the prior art, in the embodiments of the present invention, an enema cannula and a visualization enema device are provided, wherein the enema cannula includes a liquid inlet adapter end, an intermediate tube section and a liquid outlet adapter end, wherein the intermediate tube section includes a central channel for accommodating an endoscope and an annular channel arranged on the periphery of the central channel, the central channel has a sealed bottom at one end close to the liquid inlet adapter end, and forms a seal with the endoscope head at one end close to the liquid outlet adapter end, a through pipe is provided between the central channel and the annular channel to allow the endoscope to pass through the central channel to the outside of the enema cannula, the annular channel is used to provide a fluid path for the enema liquid at the liquid inlet adapter end and the liquid outlet adapter end, the liquid outlet adapter end is fixed to the annular channel, and is provided with one or more liquid outlets surrounding the central channel. The enema device of the present invention includes the above-mentioned enema cannula, and the endoscope channel and the liquid channel are coaxially arranged. The endoscope is located in the center of the enema cannula, and the liquid spraying direction is distributed around the endoscope lens. On the one hand, it fully utilizes the pipeline space, cleans evenly, and does not affect the lens viewing angle; on the other hand, it has the advantage of "spraying wherever it is pointed", is simple to operate, and can achieve precise positioning and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0020] Figure 1 1 is a schematic structural diagram of an enema cannula 10 exemplarily shown in the present invention;

[0021] Figure 2 1 is a schematic structural diagram of another enema cannula 10 exemplarily shown in the present invention;

[0022] Figure 3 1 is a first schematic diagram of an assembly of an endoscope and an enema cannula 10 exemplarily shown in the present invention;

[0023] Figure 4 1 is a second schematic diagram of an assembly of an endoscope and an enema cannula 10 exemplarily shown in the present invention;

[0024] Figure 5Schematic diagram showing that the ejection direction of the liquid outlet is consistent with the optical axis;

[0025] Figure 6 Schematic diagram showing an exemplary embodiment of the present invention in which the ejection direction of the liquid outlet deviates from the optical axis;

[0026] Figure 7 1 is an end view of a liquid outlet adapter end including various liquid outlet arrangement designs exemplarily shown in the present invention;

[0027] Figure 8 1 is a schematic structural diagram of an enema device 100 exemplarily shown in the present invention;

[0028] Figure 9 1 is a schematic structural diagram of another enema device 100 exemplarily shown in the present invention.

[0029] The reference numerals are as follows:

[0030] Enema cannula 10; liquid inlet adapter 1; intermediate tube section 2; liquid outlet adapter 3; central channel 21; annular channel 22; bottom section 23; through-tube 24; top opening 25; outer wall opening 26; inner wall opening 27; guide portion 28; gap 29; liquid outlet 31; top seat 32; liquid outlet guide channel 33; liquid storage tank 20; catheter 30; endoscope 40; first controller 50a; second controller 50b; pressure sensor 60 DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings 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 making creative efforts shall fall within the scope of protection of the present invention.

[0032] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0034] Please refer to Figure 1-Figure 7The present invention exemplifies the structure of an enema cannula 10. The enema cannula 10 comprises a liquid inlet adapter 1, an intermediate tube section 2, and a liquid outlet adapter 3, which are connected in sequence. The intermediate tube section 2 includes a central channel 21 for accommodating an endoscope and an annular channel 22 disposed around the central channel 21. The end of the central channel 21 near the liquid inlet adapter 1 has a sealed bottom 23, and the end of the central channel 21 near the liquid outlet adapter 3 has a top opening 25 for accommodating the endoscope head (when the endoscope is assembled, the end of the central channel 21 near the liquid outlet adapter 3 forms a seal with the endoscope head). The inner wall of the central channel 21 has an inner wall opening 27, and the outer wall of the annular channel 22 has an outer wall opening 26. A through-channel 24 is provided between the inner wall opening 27 and the outer wall opening 26 to allow the endoscope to pass through the central channel 21 to the outside of the enema cannula 10 and connect to a controller. The annular channel 22 provides a fluid path for the enema liquid between the liquid inlet adapter 1 and the liquid outlet adapter 3. The liquid outlet adapter 3 is fixed to the annular channel 22 (either fixedly connected or integrally formed). It is provided with one or more liquid outlets 31 that communicate with the interior of the annular channel 22 and surround the central channel 21. Preferably, the one or more liquid outlets 31 are symmetrically arranged around the central channel 21 (i.e., each liquid outlet 31 is symmetrical with another liquid outlet 31 relative to the central channel 21), so that the central axis of the one or more liquid outlets 31 is aligned with the optical axis of the endoscope. This allows the user to achieve "spray wherever the eye is pointed" when operating the enema cannula 10 for infusion, reducing the operational complexity.

[0035] In one embodiment, the liquid outlet adapter 3 includes a top seat 32 having a certain thickness, and a liquid outlet guide channel 33 is provided on the top seat 32. The liquid outlet guide channel 33 connects the interior of the annular channel 22 and the liquid outlet 31. The liquid outlet guide channel 33 can guide the enema liquid to be ejected from the liquid outlet 31 according to a preset flow direction and force. Figure 6 As shown, the liquid outlet guide channel 33 guides the injection direction of the perfusion liquid to deviate from the optical axis direction of the endoscope and tilt outward at an angle θ, which can ensure that the cleaning area does not block the lens. Figure 5 As shown, the liquid outlet guide channel 33 guides the injection direction of the irrigation liquid to align with the optical axis of the endoscope, which can make the injection direction of the irrigation liquid more concentrated, facilitating precise positioning and cleaning. The liquid outlet guide channel 33 can also change the liquid injection force based on its shape design. For example, if the aperture of the liquid outlet guide channel 33 on the side close to the annular channel 22 is smaller than the aperture of the liquid outlet 31, the liquid injection force can be weakened.

[0036] In one embodiment, the arrangement design of the liquid outlet 31 can be carried out in a variety of ways. Figure 7 As shown, the end view of the liquid outlet adapter end including various liquid outlet arrangement designs is shown as an example. Figure 7(a) shows the end face of the liquid outlet adapter 3 including an annular liquid outlet 31. By designing the liquid outlet guide channel 33, the enema liquid ejected from the annular liquid outlet 31 can be ejected outward in a direction deviating from the endoscope optical axis, or directly ejected in a direction consistent with the endoscope optical axis. Figure 7 (b) and 7 (c) show the end surface of the liquid outlet adapter 3 including multiple liquid outlets 31. Figure 7 In (b), the multiple liquid outlets 31 are arranged in a petal-like pattern, which can weaken the spraying force of the liquid and thus reduce irritation to the intestine. Figure 7 The multiple liquid outlets 31 in (c) are arranged in a spiral pattern, balancing both spray force and direction. The even distribution of multiple liquid outlets around the head of the endoscope prevents the problem of uneven hydraulic pressure and insufficient local flushing in the existing single-path layout, resulting in more uniform intestinal cleansing without affecting the viewing angle of the lens.

[0037] In some embodiments, a first detachable sealing structure (not shown) adapted to the endoscope head is provided at the top opening 25 of the central channel 21. The endoscope can be detachably mounted in the central channel 21 through the first detachable sealing structure, and achieves an airtight and watertight seal with the end of the central channel 21. The first detachable sealing structure includes a snap-fit ​​joint with a sealing ring, an inflatable silicone sleeve, an elastic valve (elastically deformed to seal when the endoscope is inserted), etc. Preferably, a second detachable sealing structure (for example, a sealing plug sleeved on the tube of the endoscope 4) is provided at the outer wall opening 26 of the annular channel 22, which is used to seal the endoscope at the extended position of the enema cannula 10 to prevent dust or other contaminants from entering the central channel 21. Setting the endoscope to be detachably mounted has the following advantages: (1) the same endoscope can be used with enema cannulas of different functions, flexibly adapting to different scenarios; (2) the enema cannula can be independently disinfected, which is cleaner and more hygienic; (3) the cost of the enema cannula is reduced, and it is easy to replace and maintain.

[0038] like Figure 3 and Figure 4 FIG. 1 is a schematic diagram showing an assembly of two endoscopes 40 and an enema cannula 10 . Figure 3 The head of the middle endoscope 40 and the liquid outlet 31 are substantially located in the same plane; Figure 4 The head of the middle endoscope 40 is protruding from the liquid outlet 31 to prevent the enema liquid from entering the lens of the endoscope 40.

[0039] In one embodiment, the endoscope 40 is mounted on the enema cannula 10 by first inserting the tail portion of the endoscope 40 from the top opening 25 of the central channel 21 and extending it forward into the inner wall opening 27 of the central channel 21, passing through the conduit 24 and extending it from the outer wall opening 26 of the annular channel 22; then, the head portion of the endoscope 40 and the extended position of the endoscope 40 are sealed respectively by the first and second attachable sealing structures.

[0040] In another embodiment, the method for installing the endoscope 40 on the enema cannula 10 is as follows: first, the head of the endoscope 40 is inserted from the outer wall opening 26 of the annular channel 22, so that it extends forward along the through-tube 24 into the central channel 21, and then extends out from the top opening 25 of the central channel 21; then, the head of the endoscope 40 and the extension position of the endoscope 40 are sealed respectively by the first and second installable sealing structures.

[0041] In order to facilitate the endoscope 40 to shuttle between the central channel 21 and the through pipe 24, a guide portion 28 (such as a guide portion 28) is provided in the central channel 21 to guide the endoscope 40 to extend. Figure 2 In one embodiment, the guide portion 28 is a sloped surface. Preferably, the guide portion 28 is integrated with the bottom 23 of the central channel 21. The through channel 24 can be further configured to have the same or similar inclination angle as the sloped surface.

[0042] In one embodiment, in order to facilitate the connection of the enema cannula 10 with a catheter or a liquid storage tank, the inner wall or the outer wall of the liquid inlet adapter end 1 is provided with a thread.

[0043] Please refer to Figure 8 and Figure 9 The present invention exemplarily shows the structure of a visualization enema device 100. The enema device 100 includes an enema cannula 10, a liquid storage tank 20, a catheter 30, an endoscope 40, and a controller (including a controller 50a and a controller 50b). Figure 1-Figure 7 The structural implementation shown in the figure has been described in detail in the above embodiment and will not be repeated here.

[0044] Specifically, the fluid reservoir 20 houses a container for the enema liquid, an air pump (or water pump) for pumping the enema liquid to the catheter 30, and various electronic components. The endoscope 40 is housed within the central channel 21 of the enema cannula 10, either fixedly or removably mounted. The catheter 30 is connected to the fluid reservoir 20 at one end and to the enema cannula 10 at the other, providing a fluid path for the enema liquid between the fluid reservoir 20 and the cannula 10.

[0045] like Figure 8As shown, the endoscope 40 is detachably mounted within the central channel 21 of the enema cannula 10. When a user operates the enema device 100 to infuse liquid into the intestine, the user can, on the one hand, control the entire infusion process (including starting, stopping, pressurizing, etc.) through the controller 50a. On the other hand, the controller 50b can guide the enema cannula 10 to the appropriate position and monitor the entire intestinal infusion process in real time. In one embodiment, the controller 50a establishes a wireless communication connection with the controller 50b, allowing the user to control the entire infusion process through the controller 50b. In other embodiments, both the controllers 50a and 50b establish a wireless communication connection with a mobile terminal, allowing the user to control the entire infusion process and monitor the entire intestinal infusion process in real time through the mobile terminal.

[0046] like Figure 9 As shown, the endoscope 40 is fixedly mounted within the central channel 21 of the enema cannula 10. In this embodiment, the enema device 100 may not include the catheter 30; the liquid inlet adapter 1 of the enema cannula 10 is directly connected to the liquid reservoir 20. It is understood that the enema device 100 also includes an optical module compatible with the endoscope 40. When a user operates the enema device 100 to infuse liquid into the intestine, the controller 50a controls the entire infusion process (including starting, stopping, and pressurizing) and monitors the entire intestinal infusion process in real time.

[0047] Existing enema devices lack intestinal pressure monitoring, making it impossible to monitor and control the patient's comfort level and enema flow rate in real time. In one embodiment, a pressure sensor 60 is installed on the outer wall of the enema cannula 10 near the liquid outlet adapter 3, and a flow control valve (not shown, such as a solenoid valve) is installed in the channel through which the perfusion liquid flows (e.g., the annular channel 22). Both the pressure sensor 60 and the flow control valve are in communication with the controller 50a or controller 50b. The controller 50a or controller 50b controls the opening of the flow control valve based on the intestinal pressure value measured by the pressure sensor 60, thereby controlling the flow rate of the enema liquid.

[0048] The enema cannula provided in an embodiment of the present invention includes a liquid inlet adapter end, an intermediate tube section, and a liquid outlet adapter end, wherein the intermediate tube section includes a central channel for accommodating an endoscope and an annular channel arranged around the central channel, the central channel having a sealed bottom at one end near the liquid inlet adapter end and a sealed end near the liquid outlet adapter end with the endoscope lens head, a through pipe is provided between the central channel and the annular channel to allow the endoscope to pass from the central channel to the outside of the enema cannula, the annular channel is used to provide a fluid path for the enema liquid at the liquid inlet adapter end and the liquid outlet adapter end, the liquid outlet adapter end is fixed to the annular channel and is provided with one or more liquid outlets surrounding the central channel. The enema device of the present invention includes the above-mentioned enema cannula, wherein the endoscope channel and the liquid channel are coaxially arranged, the endoscope is located in the center of the enema cannula, and the liquid spray direction is distributed around the endoscope lens. On the one hand, the pipe space is fully utilized, the cleaning is uniform, and the lens viewing angle is not affected; on the other hand, it has the advantage of "spraying wherever it is pointed", is simple to operate, and can achieve precise positioning and cleaning.

[0049] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art will readily conceive of variations or substitutions within the technical scope disclosed herein. Therefore, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. An enema cannula, characterized in that: The enema cannula comprises a liquid inlet adapter end, an intermediate tube section and a liquid outlet adapter end. The intermediate tube section comprises a central channel for accommodating an endoscope and an annular channel arranged on the periphery of the central channel. The end of the central channel close to the liquid inlet adapter end has a sealed bottom. The end of the central channel close to the liquid outlet adapter end forms a seal with the endoscope head. A through pipe is provided between the central channel and the annular channel to allow the endoscope to pass through the central channel to the outside of the enema cannula. The annular channel is used to provide a fluid path for the enema liquid between the liquid inlet adapter end and the liquid outlet adapter end. The liquid outlet adapter end is fixed to the annular channel and is provided with one or more liquid outlets surrounding the central channel.

2. The enema cannula according to claim 1, characterized in that The one or more liquid outlets are symmetrically arranged around the central channel.

3. The enema cannula according to claim 1, characterized in that The liquid outlet adapter end includes a top seat with a certain thickness. A liquid outlet guide channel is provided on the top seat. The liquid outlet guide channel communicates with the interior of the annular channel and the liquid outlet.

4. The enema cannula according to claim 2, characterized in that: The liquid outlet guide channel guides the jetting direction of the enema liquid to deviate outwardly by a certain angle relative to the optical axis direction of the endoscope.

5. The enema cannula according to claim 1, characterized in that A guide portion for guiding the endoscope to extend is provided in the central channel.

6. The enema cannula according to claim 1, characterized in that One end of the central channel close to the liquid outlet adapter end is provided with a first installable sealing structure adapted to the endoscope head. Through the first installable sealing structure, the endoscope can be detachably installed in the central channel.

7. The enema cannula according to claim 1, characterized in that The top end of the central channel protrudes from the liquid outlet adapter end.

8. The enema cannula according to any one of claims 1 to 7, characterized in that: The multiple liquid outlets are arranged in a petal-like pattern or in a spiral pattern.

9. A visual enema device, characterized in that: The enema cannula comprises a liquid storage tank, an endoscope, and the enema cannula according to any one of claims 1 to 8, wherein the liquid storage tank is connected to the enema cannula, the endoscope is accommodated in the central channel of the enema cannula, the head of the endoscope forms a seal with an end of the central channel close to the liquid outlet adapter end, and the tail of the endoscope extends from the outer wall opening of the annular channel of the enema cannula.

10. The enema device according to claim 9, characterized in that A pressure sensor is provided on the outer wall of the enema cannula near the liquid outlet adapter end, and a flow regulating valve is provided in the annular channel. The enema device also includes a controller, which is communicatively connected to the pressure sensor and the flow regulating valve respectively and is configured to control the opening of the flow regulating valve based on the intestinal pressure value measured by the pressure sensor.

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