Aspirator and aspiration system

Abstract

The invention provides an aspirator and an aspiration system. The suction system comprises a guide device and a suction device; the introducer comprises a protective sheath tube and a plugging device; the plugging device is used for being partially inserted into the protective sheath tube to plug the protective sheath tube; the protective sheath tube is used for guiding the aspirator to a target position after the plugging device is withdrawn from a tube cavity of the protective sheath tube; the aspirator comprises a main body tube, a handle and an endoscope; the near end of the main body tube is connected with the handle; the far end part of the endoscope is arranged in the far end of the main body tube; a suction channel and a water injection channel are arranged in the main body tube in the axial direction of the main body tube, the suction channel and the water injection channel both penetrate through the main body tube, and the endoscope is independently arranged relative to the suction channel and the water injection channel. Through the configuration, the suction efficiency is improved, unnecessary tissue damage in the puncture process can be avoided, the lens can be flushed, and the visualization effect is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and particularly relates to a suction device and a suction system for removing hematomas. Background Art

[0002] After cerebral hemorrhage, it is necessary to remove the hematoma and discharge it outside the skull. Currently, a device with an endoscope has been proposed to suck the hematoma out through a suction tube, so as to solve the problems of brain tissue injury, nerve injury and intraoperative bleeding caused by blind suction during the hematoma removal process. However, in the prior art, the endoscope of the device with an endoscope is placed in the suction channel of the outer sheath tube, and the hematoma is pumped out through the annular gap between the outer sheath tube and the endoscope. In this way, the actual suction area of the suction channel is reduced, and the suction volume and suction efficiency are greatly reduced. The outer sheath tube is not only used as a suction tube, but also used as a guiding sheath. Once inserted into the body, it cannot be randomly inserted or pulled out, and its position and angle cannot be adjusted anymore, which affects its convenience of use. In addition, when the endoscope is placed in the suction channel and the brain is punctured together, since the annular gap cannot be completely blocked, the brain tissue may also be damaged. Moreover, the surface of the lens on the endoscope is easily adhered with blood stains that are difficult to remove, which affects the overall visual effect of the lens.

[0003] It should be noted that the information disclosed in the background art part of the present application is only intended to deepen the understanding of the general background art of the present application, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0004] Aiming at at least one defect existing in the prior art, the purpose of the present invention is to provide a suction device and a suction system to solve the problems that when the endoscope is placed in the suction channel, the suction volume and suction efficiency are greatly reduced, and the endoscope vision is easily blurred and the tissue is extremely easy to be damaged during the puncture process.

[0005] To achieve the above purpose, the present invention provides a suction device for removing hematomas, which includes: a main body tube, a handle and an endoscope; the proximal end of the main body tube is connected to the handle; the distal part of the endoscope is arranged inside the distal end of the main body tube; a suction channel and a water injection channel are arranged along the axial direction of the main body tube inside the main body tube, both the suction channel and the water injection channel penetrate through the main body tube, and the endoscope is independently arranged relative to the suction channel and the water injection channel.

[0006] Optionally, the suction channel and the water injection channel are independently arranged, or the suction channel and the water injection channel share a common channel.

[0007] Optionally, the suction channel is eccentrically arranged with respect to the main body tube.

[0008] Optionally, the suction channel and the water injection channel are independently arranged, and the endoscope and the water injection channel are arranged circumferentially along the outer side of the suction channel on the main body tube.

[0009] Optionally, the distal end of the main body tube includes a head end seat, and the head end seat is provided with a lens mounting hole and a light source mounting hole that are independently arranged; both the lens mounting hole and the light source mounting hole axially penetrate through the head end seat; the lens mounting hole is provided with the lens of the distal part; the light source mounting hole is provided with the light source of the distal part.

[0010] Optionally, the distal end face of the head end seat is provided with a groove, and both the lens mounting hole and the light source mounting hole start from the bottom of the groove and axially penetrate through the proximal end face of the head end seat.

[0011] Optionally, the number of the light source mounting holes is two, and the two light source mounting holes are distributed on both circumferential sides of the lens mounting hole along the head end seat, and each light source mounting hole is provided with one light source.

[0012] Optionally, the head end seat is further provided with a water injection hole that is independently arranged from the lens mounting hole and the light source mounting hole, the water injection hole axially penetrates through the head end seat, the water injection hole is located between one light source mounting hole and the lens mounting hole, and the distal end of the water injection channel includes the water injection hole.

[0013] Optionally, the head end seat is further provided with a suction hole that is independently arranged from the lens mounting hole and the light source mounting hole, the suction hole axially penetrates through the head end seat, and the distal end of the suction channel includes the suction hole.

[0014] Optionally, the head end seat is further provided with a water injection hole that is independently arranged from the lens mounting hole, the light source mounting hole and the suction hole, the water injection hole axially penetrates through the head end seat, and the lens mounting hole, the light source mounting hole and the water injection hole are sequentially arranged circumferentially along the outer side of the suction hole on the head end seat.

[0015] Optionally, the light source is closer to the distal end face of the head end seat than the lens.

[0016] Optionally, the suction channel and the water injection channel are independently arranged, the main body tube is a single-chamber tube, and an independently arranged water injection pipe and a suction pipe are provided in the lumen of the main body tube, the suction pipe is used to provide the suction channel, the water injection pipe is used to provide the water injection channel, or, the suction channel and the water injection channel share a channel, the main body tube is a single-chamber tube, and a suction pipe is provided in the lumen of the main body tube, and the suction pipe is used to provide the suction channel and the water injection channel.

[0017] Optionally, the aspirator further includes an instrument channel port connected to the handle. The instrument channel port and the suction channel are on the same axis. The instrument channel port is configured to be selectively communicable or non-communicable with the suction channel, or the instrument channel port is configured to be constantly connected to the suction channel.

[0018] Optionally, the aspirator further includes a three-way structure provided on the handle. The three-way structure includes a valve body having a first suction port, a second suction port, and the instrument channel port. The first suction port is connected to the proximal end of the suction channel. The second suction port is connected to a suction passage provided in the handle. The axis of the first suction port coincides with the axis of the instrument channel port. The axis of the second suction port is disposed at an angle to the axis of the first suction port.

[0019] Optionally, the three-way structure further includes a switching valve core rotatably mounted on the valve body. The switching valve core can keep the suction passage constantly connected to the suction channel and can open and close the instrument channel port.

[0020] The switching valve core has a first position and a second position and can be switched between the first position and the second position. When the switching valve core is in the first position, the instrument channel port is closed so that the instrument channel port is not connected to the suction channel. When the switching valve core is in the second position, the instrument channel port is opened so that the instrument channel port is connected to the suction channel.

[0021] Optionally, the aspirator further includes a valve body and a control valve provided on the handle. The valve body has a first suction port and a second suction port. A valve core mounting hole is provided on the handle. The control valve is rotatably mounted in the valve core mounting hole. The hole wall of the valve core mounting hole is connected with a first suction mounting hole, a second suction mounting hole, and a water injection mounting hole. The first suction port is connected to the proximal end of the suction channel. The second suction port is connected to the first suction mounting hole. The second suction mounting hole is connected to the suction passage in the handle. The water injection mounting hole is connected to the water injection passage in the handle.

[0022] The control valve is configured to be able to selectively connect the suction passage to the valve body or connect the water injection passage to the valve body, so that the water injection channel and the suction channel share a channel.

[0023] Optionally, the control valve is provided with a suction through hole, a water injection through hole, and a water injection groove. The suction through hole and the water injection through hole are arranged at a certain angle along the circumferential direction of the control valve. The water injection groove communicates with the water injection through hole at the outlet of the water injection through hole.

[0024] When the control valve rotates to a position where the suction through-hole communicates with the first suction mounting hole, the suction passage communicates with the valve body to perform suction through the suction channel; when the control valve rotates to a position where the water injection through-hole communicates with the water injection mounting hole, the water injection passage communicates with the valve body to perform water injection through the suction channel.

[0025] Optionally, an independent suction passage and a water injection passage are provided inside the handle. The proximal end of the suction channel is connected to the distal end of the suction passage, the proximal end of the suction passage extends out from the proximal end of the handle and is used for connecting with a suction device, the proximal end of the water injection channel is connected to the distal end of the water injection passage, and the proximal end of the water injection passage extends out from the proximal end of the handle and is used for connecting with a drip device.

[0026] Based on the same inventive concept, the present invention further provides an aspiration system, which includes a guide and any one of the aspirators described above; the guide includes a protective sheath and a plug; the plug is used to partially insert into the protective sheath to block the protective sheath; the protective sheath is used to guide the aspirator to the target position after the plug withdraws from its lumen.

[0027] Compared with the prior art, the aspirator and the aspiration system provided by the present invention have at least the following advantages:

[0028] In the above-described aspirator, it includes: a main body tube, a handle, and an endoscope; the proximal end of the main body tube is connected to the handle; the distal part of the endoscope is disposed inside the distal end of the main body tube; a suction channel and a water injection channel are provided along the axial direction of the main body tube inside the main body tube, both the suction channel and the water injection channel penetrate through the main body tube, and the endoscope is independently arranged relative to the suction channel and the water injection channel. With such a configuration, the endoscope in the aspirator of the present invention no longer occupies the suction channel, ensuring the smoothness of the suction channel, and thus can smoothly aspirate the hematoma. Especially for severely adhered hematomas, a large suction force can also be maintained, greatly improving the suction efficiency and the effectiveness of suction; a water injection channel for flushing the endoscope is also provided in the aspirator of the present invention, making the lens field of view clean and bright after flushing, greatly enhancing the visualization effect.

[0029] In the above-described aspiration system, in addition to including an aspirator, it further includes a guide, the guide includes a protective sheath and a plug; the plug is used to partially insert into the protective sheath to block the protective sheath; the protective sheath is used to guide the aspirator to the target position after the plug withdraws from its lumen. With such a configuration, the present invention can perform puncture through the protective sheath as a guiding sheath, and during the puncture process, the protective sheath is blocked by the plug placed in the protective sheath, protecting the tissue from unnecessary damage and improving the surgical safety.

[0030] In the aspirator described above, an instrument passage opening connected to the handle may be further included. The instrument passage opening and the suction passage are always on the same axis, and the instrument passage opening can be selectively communicated or not communicated with the suction passage. Alternatively, the instrument passage opening is configured to be always communicated with the suction passage. With such a configuration, the aspirator of the present invention can also be switched to the instrument treatment mode. In the instrument treatment mode, the instrument passage opening is communicated with the suction passage, so that auxiliary or treatment instruments can enter the suction passage through the instrument passage opening, achieving the effect of auxiliary treatment and further improving the surgical efficiency. Description of the Drawings

[0031] Those of ordinary skill in the art will understand that the provided drawings are used to better understand the present invention and do not constitute any limitation to the scope of the present invention. Among them:

[0032] Figure 1 is a schematic structural diagram of the aspiration system provided by the present invention according to Embodiment 1;

[0033] Figure 2 is a front structural diagram of the head end seat provided by the present invention according to Embodiment 1;

[0034] Figure 3 is a schematic internal structure diagram of the main body tube provided by the present invention according to Embodiment 1;

[0035] Figure 4 is a schematic structural diagram of the endoscope at the distal end provided by the present invention according to Embodiment 1, where the internal structure is shown in a perspective view;

[0036] Figure 5 is a schematic structural diagram of the switching valve core provided by the present invention according to Embodiment 1;

[0037] Figure 6 is a schematic cross-sectional structure diagram of the endoscope at the proximal end provided by the present invention according to Embodiment 1;

[0038] Figure 7 is a schematic exploded structure diagram of the aspirator at the proximal end provided by the present invention according to Embodiment 2;

[0039] Figure 8 is a schematic structural diagram of the upper housing provided by the present invention according to Embodiment 2;

[0040] Figure 9 is a schematic structural diagram of the control valve provided by the present invention according to Embodiment 2.

[0041] The description of the reference numerals is as follows:

[0042] 100 - Suction device; 110 - Main body tube; 112 - Head end seat; 1121 - Lens mounting hole; 1122 - Light source mounting hole; 1123 - Water injection hole; 1124 - Suction hole; 120 - Handle; 1201 - Upper housing; 1202 - Lower housing; 121 - Suction force adjustment hole; 122 - Mounting interface; 123 - Sealed mounting structure; 124 - Spool mounting hole; 1241 - First suction mounting hole; 1242 - Second suction mounting hole; 1243 - Water injection mounting hole; 125 - Limit groove; 126 - Three - way mounting hole; 1201 - Upper housing; 1202 - Lower housing; 130 - Endoscope; 131 - Lens; 132 - Light source; 133 - Cable; 140 - Suction channel; 141 - Suction pipe; 150 - Water injection channel; 151 - Water injection pipe; 152 - Hose; 160 - Instrument channel port; 170 - Three - way structure; 171 - Valve body; 1711 - First suction port; 1712 - Second suction port; 172 - Switching spool; 1721 - Suction path interface; 1722 - Suction connection port; 1723 - Instrument connection port; 173 - Control valve; 173a - Suction through - hole; 173b - Water injection through - hole; 173c - Water injection groove; 1731 - Sealing ring mounting groove; 1732 - Limit mounting groove; 174 - Operation part; 180 - Suction path; 181 - Suction connecting pipe; 182 - Suction joint; 183 - Suction force adjustment hole groove; 190 - Water injection path; 191 - Hose; 200 - Guide; 210 - Protection sheath tube; 211 - Scale line; 220 - Plug Detailed implementation manners

[0043] To make the objectives, advantages and features of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the accompanying drawings are in very simplified forms and not drawn to scale, merely for the convenience and clarity of assisting in explaining the objectives of the embodiments of the present invention. In addition, the structures shown in the accompanying drawings are often part of the actual structures. In particular, the focuses to be shown in each of the accompanying drawings are different, and sometimes different scales are used.

[0044] As used in the present invention, the singular forms "a", "an" and "the" include plural referents, the term "or" is generally used in the sense of including "and / or", the term "several" is generally used in the sense of including "at least one", the term "at least two" is generally used in the sense of including "two or more", in addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or at least two of such features. The terms "one end" and "the other end" generally refer to two corresponding parts, which include not only the endpoints. The terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and may be the internal communication of two components or the interaction relationship between two components. In addition, as used in the present invention, one component being disposed on another component generally only indicates that there is a connection, coupling, cooperation or transmission relationship between the two components, and the two components may be directly or indirectly connected, coupled, cooperated or transmitted through an intermediate component, and cannot be construed as indicating or implying the spatial position relationship between the two components, that is, one component may be inside, outside, above, below or on one side of the other component, etc. in any orientation, unless otherwise explicitly stated in the content. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In this application document, the term "proximal" generally refers to the end close to the operator (mainly medical staff), the term "distal" generally refers to the end far from the operator, the term "axial" refers to the central axis direction of the aspirator or the introducer, and "circumferential" refers to the direction around the central axis of the aspirator or the introducer.

[0046] The object of the present invention is to provide an aspirator and an aspiration system to solve the problems that when the endoscope is placed in the suction channel, the suction volume and suction efficiency are greatly reduced, and the endoscope vision is easily blurred and the tissue is extremely easily damaged during the puncture process.

[0047] The aspirator provided by the present invention is applicable to the removal of hematomas in any suitable part of a patient or an individual, preferably the removal of intracranial hematomas.

[0048] The following description is made with reference to the accompanying drawings. The following description mainly takes the removal of brain hematomas as an example for illustration, but those skilled in the art should be able to modify the following description to apply the present invention to the removal of hematomas in other parts.

[0049]

Example 1

[0050] Figure 1 The structural schematic diagram of the suction system provided by the first embodiment of the present invention is as follows. As Figure 1 shown, the suction system includes a suction device 100 and a guide device 200; the guide device 200 is used to guide the suction device 100 to a target position, and the target position is mainly the bleeding position. The guide device 200 includes a protection sheath 210 and a plugging device 220. The protection sheath 210 is used to be inserted into the brain to a certain depth to achieve brain puncture. Therefore, the protection sheath 210 can act as a guiding sheath, and further provide a working channel for the suction device 100 to enter and exit the brain. In addition, during the brain puncture process, the plugging device 220 can be partially inserted into the protection sheath 210 to plug the protection sheath 210, thereby avoiding unnecessary brain tissue damage and improving the surgical safety. After the brain puncture is completed, the plugging device 220 is withdrawn from the protection sheath 210, so that the protection sheath 210 can guide the suction device 100 to the target position after the plugging device 220 withdraws from its lumen. After reaching the target position, the protection sheath 210 always provides a working channel for the suction device 100, reducing the damage of the suction device 100 to the brain tissue. This operation also facilitates the insertion and removal of the suction device 100 once or multiple times during the operation, facilitating the adjustment of the suction device 100 and not damaging the brain tissue.

[0051] Optionally, scale lines 211 are provided on the outer surface of the protection sheath 210 along its own axis, and the scale lines 211 are used to mark the depth of the guide device 200 inserted into the brain. The protection sheath 210 is usually a straight circular tube with an equal cross-section, and the distal end surface of the protection sheath 210 is flush. The plugging device 220 is a solid rod that can fit with the inner surface of the protection sheath 210, and a conical head can be provided at its distal end, and the conical head extending outside the distal end of the protection sheath 210 is beneficial for plugging and puncturing.

[0052] It should be understood that the suction system has at least two states; when the suction system is in the first state, the suction device 100 and the guide device 200 are independent of each other; when the suction system is in the second state, the suction device 100 is partially arranged in the lumen of the protection sheath 210; the first state is the unused state of the suction system or the use state during brain puncture, and the second state is the use state of the suction system during hematoma removal.

[0053] Please refer to Figures 1 to 4As shown, the aspirator 100 includes a main body tube 110, a handle 120, and an endoscope 130; the proximal end of the main body tube 110 is connected to the handle 120; the distal portion of the endoscope 130 is disposed inside the distal end of the main body tube 110. At least a part of the distal end of the main body tube 110 is the part that needs to be inserted into the body. The main body tube 110 can be an integrally formed structure (i.e., an integral made as a whole), or the main body tube 110 is a split formed structure (i.e., made separately and then assembled into a whole). As in this embodiment, the distal end of the main body tube 110 includes a head end seat 112, and the main body tube 110 can integrally form the head end seat 112, or form the head end seat 112 separately and then assemble it. Further, the distal portion of the endoscope 130 is disposed inside the head end seat 112.

[0054] The endoscope 130 further includes a proximal portion that passes through the main body tube 110 and extends into the handle 120. Those skilled in the art should know that the distal portion of the endoscope 130 includes a lens 131 and a light source 132 (see Figure 2 and Figure 4 ), and the proximal portion of the endoscope 130 includes a cable 133 connected to the lens 131 and the light source 132 (see Figure 3 , including a cable for imaging and a light source cable).

[0055] Continuing to refer to Figures 2 to Figure 4 , both the lens 131 and the light source 132 are disposed inside the distal end of the main body tube 110. In this embodiment, both the lens 131 and the light source 132 are disposed inside the head end seat 112; the cable 133 passes through the main body tube 110 and extends into the handle 120. The cable 133 usually enters and exits the handle 120 from the proximal end of the handle 120, and then extends into the main body tube 110 through the inner cavity of the handle 120. A cable port for the concentrated entry and exit of the cable 133 can be provided at the proximal end of the handle 120, and the cable 133 can also extend out of the proximal end of the handle 120 and be connected to the host. The host can further display the image transmitted back by the lens 131. In this way, the surgeon can observe the image inside the body through the image information transmitted back by the endoscope 130, and learn the bleeding position and bleeding state, thereby ensuring the accuracy and effectiveness of the hematoma removal site and effectively improving the hematoma removal efficiency.

[0056] It should also be understood that the lens 131 needs to collect images inside the body under the lighting conditions provided by the light source 132. The light source 132 can be integrated with the lens 131 on a module, or the light source 132 and the lens 131 are separately arranged. The number of light sources 132 is one or more, and a more appropriate number is two. To ensure the lighting of the lens 131, the light sources 132 are preferably distributed on both sides of the lens 131 for illumination, that is Figure 2As shown, the illumination direction of the light source 132 is consistent with the shooting direction of the lens 131. The light source 132 can be flush with the lens 131. Alternatively, the light source 132 is closer to the distal end face of the main body tube 110 than the lens 131, and such an illumination effect is better. The light source 132 can have various shapes, such as a lamp board, lamp beads or other structural features, and the present invention is not limited thereto.

[0057] In addition to the visual function provided by the endoscope 130, the aspirator 100 also has the functions of aspiration and water injection at the same time.

[0058] Please refer to Figures 1 to 6 As shown, an aspiration channel 140 and a water injection channel 150 are provided along the axial direction of the interior of the main body tube 110, and both the aspiration channel 140 and the water injection channel 150 penetrate through the main body tube 110. In this embodiment, the endoscope 130, the aspiration channel 140 and the water injection channel 150 are independent of each other and do not affect each other. The function of the aspiration channel 140 is to aspirate the hematoma after cerebral hemorrhage and discharge the hematoma outside the skull; the function of the water injection channel 150 is to inject water to clean the lens 131. With such a setting, the endoscope 130 no longer occupies the aspiration channel 140, ensuring the smoothness of the aspiration channel 140, and thus can smoothly aspirate the hematoma. Especially for severely adhered hematomas, it can also maintain a large suction force, suck the hematoma and conveniently pull it out as a whole block, greatly improving the aspiration efficiency and the effectiveness of aspiration. At the same time, the aspirator 100 is also provided with a water injection channel 150 dedicated to flushing the endoscope 130, which can be flushed as needed and stopped when not in use. After flushing, the field of view of the lens 131 is cleaned and bright, greatly improving the visualization effect.

[0059] Continue to refer to Figure 2 , in a preferred embodiment, the head end seat 112 is provided with independent lens mounting holes 1121, light source mounting holes 1122, water injection holes 1123 and aspiration holes 1124; the lens mounting holes 1121, light source mounting holes 1122, water injection holes 1123 and aspiration holes 1124 all penetrate through the head end seat 112 along the axial direction; among them, the lens mounting hole 1121 is provided with the lens 131; the light source mounting hole 1122 is provided with the light source 132; in addition, the distal end of the aspiration channel 140 includes the aspiration hole 1124, and the distal end of the water injection channel 150 includes the water injection hole 1123. In this way, by simply machining a plurality of through holes on the head end seat 112, the head end seat 112 can integrate multiple functions of aspiration, visualization and water injection at the same time. In particular, when applied to the field of neurointervention, the overall outer diameter of the head end seat 112 can be ensured to be small. The shapes of the lens mounting holes 1121, light source mounting holes 1122, water injection holes 1123 and aspiration holes 1124 are not limited, but based on processing considerations, shapes such as rectangular holes or circular holes that are easy to process are mostly used.

[0060] Preferably, the number of the light source mounting holes 1122 is two. The two light source mounting holes 1122 are distributed on both sides of the lens mounting hole 1121 along the circumferential direction of the head end base 112. Each light source mounting hole 1122 is provided with a light source 132. In order to better flush the lens 131, the water injection hole 1123 is as close as possible to the lens 131, and is preferably arranged adjacent to the lens mounting hole 1121. Further preferably, the water injection hole 1123 is located between a light source mounting hole 1122 and the lens mounting hole 1121.

[0061] Preferably, in an embodiment, the lens mounting hole 1121, the light source mounting hole 1122 and the water injection hole 1123 are sequentially arranged along the circumferential direction of the main body pipe 110 outside the suction hole 1124, and the lens mounting hole 1121, the light source mounting hole 1122 and the water injection hole 1123 are preferably arranged on the same circumference as much as possible to minimize the outer diameter of the head end base 112.

[0062] Continue to refer to Figure 2 , in a preferred embodiment, a groove (not labeled) is provided on the distal end face of the head end base 112. The lens mounting hole 1121, the light source mounting hole 1122, the water injection hole 1123 and the suction hole 1124 all start from the bottom of the groove and axially penetrate through the proximal end face of the head end base 112. The setting of the groove can better protect the brain tissue and reduce the damage to the brain tissue. The depth of the groove is preferably 1 mm to 3 mm, and a more suitable size is 2 mm, which will not affect the lens 131 and ensure the shooting effect. The distal end face of the head end base 112 and the bottom face of the groove are preferably flat.

[0063] The optical axis of the lens 131 is parallel or non-parallel to the axis of the head end base 112. The axes of the light source mounting hole 1122, the water injection hole 1123 and the suction hole 1124 are parallel or non-parallel to the axis of the head end base 112. In this embodiment, the axes of the light source mounting hole 1122, the water injection hole 1123 and the suction hole 1124 are all parallel to the axis of the head end base 112. The suction hole 1124 needs to be within the visual field of the lens 131 to achieve the effect of sucking what is seen and seeing what is sucked. In order not to block the lens 131, the lens 131 is preferably deflected by a certain angle, that is, the optical axis of the lens 131 forms an angle with the axis of the head end base 112, and the deflection direction of the lens 131 is towards the direction of the suction hole 1124, and the deflection angle is preferably 10° to 15°.

[0064] The aspiration channel 140 can be concentrically or eccentrically arranged relative to the main body tube 110, preferably eccentrically arranged. Especially for neurointerventional surgeries, the outer diameter of the main body tube 110 is very small. That is to say, it is necessary to integrate the aspiration channel 140, the water injection channel 150, and the wire routing channel (i.e., the channel for arranging the cable 133) simultaneously within the relatively small main body tube 110. At this time, it is necessary to avoid increasing the outer diameter of the main body tube 110 while ensuring the aspiration size (mainly the cross-sectional size) of the aspiration channel 140. To meet this requirement, the aspiration channel 140 and the main body tube 110 are preferably eccentrically arranged. Specifically in this embodiment, the aspiration hole 1124 is eccentric relative to the head end seat 112, and at the same time, the aspiration channel 140 in the remaining part of the main body tube 110 (such as the aspiration tube 141) is eccentric relative to the main body tube 110; on the premise of ensuring that the overall outer diameter of the main body tube 110 is small, the cross-sectional area of the aspiration channel 140 can be larger, so as to be applicable to the special field of neurosurgery.

[0065] Regardless of whether it is eccentric or concentric, in this embodiment, the water injection channel 150 and the cable 133 of the endoscope 130 are both arranged outside the aspiration channel 140 and are arranged around the aspiration channel 140. Preferably, the endoscope 130 and the water injection channel 150 are sequentially arranged along the circumferential direction of the main body tube 110 on the outside of the aspiration channel 140. This arrangement method is also beneficial to reducing the outer diameter of the main body tube 110.

[0066] It should be noted that the outer diameter of the main body tube 110 of the present invention can be set to be smaller than that of a conventional endoscope, about 6.5 mm. At the same time, the inner diameter of the aspiration channel 140 can be increased to 3.0 mm - 4.0 mm, and more preferably, the inner diameter of the aspiration channel 140 is increased to 3.5 mm - 4.0 mm; the main body tube 110 with such an outer diameter can reduce skull damage; the cross-sectional size of the aspiration channel 140 with such an inner diameter will not be too small, which can improve the aspiration efficiency. Therefore, the aspirator 100 of the present invention has a high degree of integration while ensuring the aspiration efficiency and having a relatively small overall outer diameter. The length of the main body tube 110 can be selected according to the depth of the hematoma. In actual use, the main body tube 110 can have multiple specifications, and different specifications correspond to different lengths. Schematically, the length of the main body tube 110 is 10.5 cm or 14.5 cm. In addition, the length of the protection sheath tube 210 should also be selected according to the depth of the hematoma. For example, in some embodiments, the length of the protection sheath tube 210 is 10 cm or 14 cm.

[0067] The main body tube 110 can be a multi-lumen tube or a single-lumen tube. When the main body tube 110 is a multi-lumen tube, multiple independent cavities of the main body tube 110 itself directly serve as the water injection channel 150, the aspiration channel 140, and the wire routing channel. On the contrary, when the main body tube 110 itself is a single-lumen tube, an independent aspiration tube 141 and a water injection tube 151 are directly arranged in the lumen of the main body tube 110 (see Figure 3) Fix the distal end of the suction tube 141 by inserting it into the suction hole 1124, and fix the distal end of the water injection tube 151 by inserting it into the water injection hole 1123. In this way, the suction channel 140 can be directly provided by the suction tube 141, and the water injection channel 150 can be provided by the water injection tube 151. This structure is not only easy to process but also can reduce the weight.

[0068] Please refer to Figure 1 and Figure 6 As shown, optionally, in one embodiment, the main body tube 110 is a single-chamber tube. The proximal end of the main body tube 110 is fixedly connected to the mounting interface 122 at the distal end of the handle 120, and the proximal end of the suction tube 141 extends beyond the proximal end of the main body tube 110 and is directly or indirectly connected to the suction passage 180 in the handle 120, so as to realize the conversion connection between the suction channel 140 in the main body tube 110 and the suction passage 180 in the handle 120.

[0069] Refer to Figure 1 and combine with Figure 3 As shown, optionally, in one embodiment, the main body tube 110 is a single-chamber tube. The proximal end of the water injection tube 151 extends beyond the proximal end of the main body tube 110 and is connected to the water injection passage 190 in the handle 120, so as to realize the conversion connection between the water injection channel 150 in the main body tube 110 and the water injection passage 190 in the handle 120. The proximal end of the water injection passage 190 is used to connect to an external drip device (such as an infusion set).

[0070] Refer to Figure 1 、 Figure 5 and Figure 6 As shown, in a preferred embodiment, the aspirator 100 further includes an instrument channel port 160 connected to the handle 120, and the instrument channel port 160 is on the same axis as the suction channel 140. In this embodiment, the instrument channel port 160 is configured to be selectively communicable or non-communicable with the suction channel 140. With such a configuration, the aspirator 100 of the present invention can also be switched to the instrument treatment mode. In the instrument treatment mode, the instrument channel port 160 is in communication with the suction channel 140, so that auxiliary or treatment instruments (such as neurointerventional instruments, such as forceps, probes, hemostatic clips, bipolar electrocoagulation instruments, etc.) can enter the suction channel 140 through the instrument channel port 160 to achieve the effect of assisting treatment and further improve the surgical efficiency. The instrument channel port 160 is usually provided behind the top end of the handle 120, that is, on the side away from the main body tube 110. The instrument channel port 160 can be integrally formed with the handle 120 or connected together after being separately formed from the handle 120.

[0071] Refer to Figure 1 and Figure 6As shown, in a preferred embodiment, the aspirator 100 further includes a three-way structure 170 disposed on the handle 120. The three-way structure 170 includes a valve body 171 having a first suction port 1711, a second suction port 1712, and an instrument passage port 160. The first suction port 1711 is disposed within the handle 120 and fixedly connected to the proximal end of the suction tube 141. The second suction port 1712 is disposed within the handle 120 and fixedly connected to the suction passage 180 within the handle 120. The axis of the first suction port 1711 coincides with the axis of the instrument passage port 160. The axis of the second suction port 1712 is disposed at an angle to the axis of the first suction port 1711, such as an angle of 90° or other angles.

[0072] If it is desired to achieve constant suction and the instrument passage can be opened and closed at any time, the three-way structure 170 may further include a switching valve core 172 rotatably mounted on the valve body 171. It should be understood that the valve body 171 itself has a valve core installation cavity communicating with the first suction port 1711, the second suction port 1712, and the instrument passage port 160, and the switching valve core 172 is directly installed within the valve core installation cavity. At this time, the switching valve core 172 can keep the suction passage 180 in constant communication with the suction channel 140 and can selectively open and close the instrument passage port 160.

[0073] More specifically, the switching valve core 172 has a first position and a second position and can be switched between the first position and the second position. When the switching valve core 172 is in the first position, the instrument passage port 160 is closed, so that the instrument passage port 160 is not in communication with the suction tube 141, and the communication state between the suction passage 180 and the suction channel 140 is maintained. When the switching valve core 172 is in the second position, the instrument passage port 160 is opened, so that the instrument passage port 160 is in communication with the suction channel 140, but the suction passage 180 and the suction channel 140 remain in communication.

[0074] See Figure 5, in an exemplary embodiment, the switching valve core 172 includes a rotating handle and a hollow plug; the rotating handle is installed at the top end of the hollow plug; a suction passage interface 1721 is provided at the bottom end of the hollow plug; the suction passage interface 1721 is correspondingly arranged and communicated with the second suction port 1712 so that the suction passage 180 is communicated with the inner cavity of the hollow plug; a suction communication port 1722 and a pair of instrument communication ports 1723 are provided on the side surface of the hollow plug; the pair of instrument communication ports 1723 are symmetrically arranged; the suction communication port 1722 is arranged between the instrument communication ports 1723. Thus, when the switching valve core 172 is set at the initial first position, the instrument communication port 1723 cannot be aligned with the instrument passage port 160, and the instrument passage port 160 is blocked by the side surface of the hollow plug; when the switching valve core 172 rotates from the first position to the second position, the instrument communication port 1723 is aligned with the instrument passage port 160, so that the first suction port 1711 and the pair of instrument communication ports 1723 are arranged on the same axis, that is, the communication between the suction passage 140 and the instrument passage port 160 is realized. This structure is simple, easy to operate, and has a low manufacturing cost.

[0075] The valve body 171 can be integrally processed and formed with the handle 120, or separately processed and formed with the handle 120 and then connected and fixed. The three-way structure 170 is arranged at a position convenient for the operator, such as at the top end or side surface of the handle 120, and the specific position is not limited. It should be particularly noted that although the present invention lists a switching method for the instrument passage port 160, those skilled in the art can also find one or more replacement methods to achieve the functions recorded in the present invention or reach the corresponding effects, not only including the solutions disclosed in the embodiments of the present invention.

[0076] Continue to refer to Figure 1 and Figure 6 , in an exemplary embodiment, an independent suction passage 180 and a water injection passage 190 are provided inside the handle 120; the proximal end of the suction passage 140 (such as the suction pipe 141) is connected to the distal end of the suction passage 180; the proximal end of the suction passage 180 extends out from the proximal end of the handle 120 and is used to connect with a suction device; the proximal end of the water injection passage 150 (such as the water injection pipe 151) is connected to the distal end of the water injection passage 190; the proximal end of the water injection passage 190 extends out from the proximal end of the handle 120 and is used to connect with a drip device. Thus, a suction device and a drip device can be externally connected through the handle 120, and the hematoma sucked can be discharged to the suction device through the handle 120, and at the same time, the cleaning medium can be introduced into the main body tube 110 through the handle 120.

[0077] Optionally, the suction passage 180 includes a suction connection tube 181 and a suction joint 182; the distal end of the suction connection tube 181 is fixedly connected to the second suction port 1712 of the valve body 171; the proximal end of the suction connection tube 181 is fixedly connected to the distal end of the suction joint 182; the proximal end of the suction joint 182 is used to connect to a suction device. However, in other embodiments, the suction passage 180 can also be formed by only one tube. Optionally, the water injection passage 190 includes a hose 191, the distal end of the hose 191 is fixedly connected to the proximal end of the water injection channel 150 (such as the water injection tube 151); the proximal end of the hose 191 is used to connect to a dripping device.

[0078] For ease of assembly, optionally, in one embodiment, the handle 120 is composed of an upper shell 1201 and a lower shell 1202. Further optionally, the proximal end of the main tube 111 is fixed to the mounting interface 122 at the distal end of the lower shell 1202. Optionally, the three-way structure 170 is installed at the top or side of the upper shell 1201; this is conducive to simplifying the structural design, does not increase the weight and volume of the handle 120, and makes the aspirator 100 more lightweight and convenient.

[0079] For more flexibility and convenience in pumping, see Figure 1 The handle 120 is preferably provided with a suction adjustment hole 121, which is connected to the suction passage 180 in the handle 120. The suction adjustment hole 121 is used to adjust the suction force so that the suction force can be large or small. In one operation mode, the handle 120 can be held with the left hand, and the left thumb is placed on the top surface of the upper shell 1201. When the operator faces the main tube 110, the left side of the operator is the suction passage 140, so that the suction passage 140 is within the field of vision, and such operation is more intuitive and convenient.

[0080] Please combine Figures 1 to 6 As shown, the specific steps of the suction system of the present invention when in use are as follows:

[0081] (1) The introducer 200 is pre-placed as the working channel of the aspirator 100 , and the protective sheath 210 and the occluder 220 are pre-placed at the site of intracranial hemorrhage. During this process, the operator can determine the position of the protective sheath 210 by the scale on the protective sheath 210 .

[0082] (2) Connect the dripping device to the water injection joint at the proximal end of the handle 120, and connect the suction device to the suction joint 182 at the proximal end of the handle 120, the suction device is in a normally open state, and the switching valve core 172 is adjusted to the initial first position;

[0083] (3) The occluder 220 is withdrawn, and then the suction device 100 is placed in the protective sheath 210;

[0084] (4) After placing the aspirator 100, the operator holds the handle 120 with the thumb placed on the top surface of the upper housing 1201 corresponding to the suction adjustment hole 121. During the operation, when a hematoma is seen in the real-time image collected by the lens 131, the thumb completely blocks the suction adjustment hole 121, and at this time, the suction force is the greatest. If you want to reduce the suction force, the thumb can slide to reduce the blocking amount of the suction adjustment hole 121;

[0085] (5) If the field of view is blurred, the drip device can be opened for water injection. The water flow can wash the field of view in front of the lens 131 through the hose 191, the hose 191, the water injection pipe 151 and the water injection hole 1123, and the lens can be washed while aspirating;

[0086] (6) If auxiliary treatment is required, the switching valve core 172 can be rotated to the second position, and the instrument can enter through the instrument channel port 160 on the handle 120 and be locked with the external locking joint. At this time, the instrument can be used for treatment while aspirating, or only the instrument can be used for treatment without aspiration.

[0087] In the above usage method, through the cooperation of the switching valve core 172 and the valve body 171, the constant connection of aspiration and the timely closing and opening of the instrument channel can be achieved. This kind of structure is particularly suitable for the field of neurosurgery, and of course it can also be applied to other fields, and the present invention is not limited thereto. However, the above usage steps do not constitute a limitation to the present invention.

[0088] It should be further noted that the endoscope 130 described in the first embodiment of the present application needs to be independently arranged relative to the aspiration channel 140 and the water injection channel 150, that is, the endoscope 130 is arranged outside the aspiration channel 140 and the water injection channel 150 to ensure the aspiration and water injection efficiency. In the above-described embodiments, the aspiration channel 140 and the water injection channel 150 are independent of each other, and particularly consider setting independent suction pipes 141 and water injection pipes 151 in a single lumen tube for aspiration and water injection respectively.

[0089]

Embodiment Two

[0090] In the aspirator 100 provided in the second embodiment of the present application, the aspiration channel 140 and the water injection channel 150 share one channel, that is, only one of the aspiration channel 140 and the water injection channel 150 needs to be retained. When aspiration is required, the aspiration channel 140 or the water injection channel 150 is used for aspiration; when the lens 131 needs to be cleaned, the aspiration channel 140 or the water injection channel 150 is used for water injection; in this case, the aspiration channel 140 or the water injection channel 150 can only be used for aspiration or cleaning, and cannot aspirate and clean the lens 131 at the same time. For the case where the aspiration channel 140 and the water injection channel 150 overlap, reference can be made to Figures 7 to 9 as shown.

[0091] The structure of the aspirator 100 provided in the second embodiment of the present application is basically the same as that of the aspirator 100 provided in the first embodiment. For the same parts, they will not be described again. The following mainly describes the differences.

[0092] As Figure 7 shown, in order to connect the suction passage 180 with the suction force adjustment hole 121, optionally, an attraction adjustment hole groove 183 is provided on the side wall of the suction passage 180 corresponding to the position of the suction force adjustment hole 121, so that the suction passage 180 is hermetically connected to the suction force adjustment hole 121 through the attraction adjustment hole groove 183. In this embodiment, the suction connection pipe 181 is provided with the attraction adjustment hole groove 183 itself. Preferably, the suction force adjustment hole 121 is provided on the top surface defined by the upper housing 1201.

[0093] As Figure 8 shown, in order to seal the suction passage 180, optionally, a sealing installation structure 123 is provided on the inner side of the handle 120 (preferably the upper housing 1201) corresponding to the position of the suction force adjustment hole 121. The sealing installation structure 123 can clamp and fix the suction passage 180 (such as the suction connection pipe 181). The sealing installation structure 123 is provided with an open arc-shaped installation groove. When the installation groove clamps the suction passage 180, it directly seals the attraction adjustment hole groove 183. Such a structure is simple and convenient for assembly. However, there are various ways to seal and fix the suction passage 180, not limited to the content disclosed in the embodiments of the present invention.

[0094] In another alternative embodiment, the sealing installation structure 123 is directly provided at the position of the suction passage 180 corresponding to the attraction adjustment hole groove 183, and the sealing between the suction force adjustment hole 121 and the suction passage 180 is realized by the structure of the suction passage 180 itself, and at the same time, the connection and fixation between the suction passage 180 and the handle 120 are realized.

[0095] It should be noted that the above-mentioned attraction adjustment hole groove 183 and sealing installation structure 123 are also applicable to the aspirator 100 provided in the first embodiment of the present application.

[0096] Continuing to refer to Figures 7 to 9 shown, when the suction channel 140 and the water injection channel 150 coincide, a control valve 173 is provided. The function of the control valve 173 is to realize the switching between water injection and suction. The control valve 173 is directly rotatably installed in the valve core installation hole 124 on the handle 120. The valve core installation hole 124 is provided on the side surface of the handle 120 and can penetrate or not penetrate the handle 120. The valve core installation hole 124 can also be provided at other positions of the handle 120. In this regard, the present application is not limited.

[0097] It is also necessary to seal the control valve 173 and the valve core installation hole 124 to prevent leakage. Optionally, a plurality of sealing rings are sleeved on the control valve 173 to seal both ends of the control valve 173 along its own axis. AsFigure 9 As shown, a sealing ring installation groove 1731 is provided at each end of the control valve 173, and a sealing ring is sleeved at each sealing ring installation groove 1731 to ensure the sealing effect.

[0098] Please refer to Figure 8 As shown, optionally, a limit groove 125 is provided on the handle 120 (such as the upper housing 1201) to limit the rotation position of the control valve 173. At the same time, referring to Figure 9 As shown, a limit installation groove 1732 is provided at one end of the control valve 173 for installing another sealing ring. The sealing ring can be clamped into the limit groove 125 on the handle 120 for sealing, and is also used for limiting during sealing, so that the control valve 173 can only rotate within a preset angle range. Of course, in addition to the sealing and limiting methods listed in the embodiments of the present application, those skilled in the art can completely find other alternative methods to implement the functions / achieve the above effects recorded in the present application based on the description of the present application specification, not only including the solutions disclosed in the embodiments of the present application.

[0099] Return to refer to Figure 7 , for the convenience of operation, an operation part 174 for driving the rotation of the control valve 173 is connected to one end of the control valve 173. The operation part 174 is exposed outside the handle 120 and includes, but is not limited to, being arranged on the side surface of the handle 120. When the control valve 173 is arranged on the side surface of the handle 120, it is beneficial for the user to complete the switching between suction and water injection with one hand, making it more convenient to use. The structural form of the operation part 174 is not limited to the illustrated handle, and for example, it can also be a sliding push button, etc. In this embodiment, the operation part 174 adopts a handle structure, and the operation part 174 is fixed to the switching spool 173 with screws.

[0100] Please combine Figure 7 and Figure 8 As shown, in the aspirator 100 provided in the second embodiment, the valve body 171 in the form of a three-way can continue to be used. It should be understood that the valve body 171 in the first embodiment has a spool installation cavity for installing the switching spool 172; while in the second embodiment, the valve body 171 can cancel the spool installation cavity and no longer set the switching spool 172, so that the instrument channel port 160 and the suction channel 140 are kept in a normally open state; or, the valve body 171 in the second embodiment can retain the spool installation cavity, and at this time, the setting method and usage method are basically the same as those in the first embodiment, so that the instrument channel port 160 can be opened and closed at any time.

[0101] Continue to refer to Figure 8, a first suction mounting hole 1241, a second suction mounting hole 1242, and a water injection mounting hole 1243 are connected to the hole wall of the valve core mounting hole 124; specifically, the first suction mounting hole 1241 is provided on the side of the valve core mounting hole 124 close to the valve body 171, and at the same time, the second suction mounting hole 1242 and the water injection mounting hole 1243 are provided on the side of the valve core mounting hole 124 away from the valve body 171. Thus, the first suction port 1711 is connected to the proximal end of the suction channel 140; the second suction port 1712 is connected to the first suction mounting hole 1241; the second suction mounting hole 1242 is connected to the suction passage 180; the water injection mounting hole 1243 is connected to the water injection passage 190. Furthermore, the control valve 173 is configured to be able to selectively communicate the suction passage 180 with the valve body 171 for suction, or communicate the water injection passage 190 with the valve body 171 for water injection, so that the water injection channel 150 and the suction channel 140 share a channel.

[0102] The control valve 173 can switch between water injection and suction through various structures, which will be demonstrated below.

[0103] As Figure 9 shown, in an exemplary embodiment, the control valve 173 is provided with a suction through hole 173a, a water injection through hole 173b, and a water injection groove 173c; on the side surface of the control valve 173, both the suction through hole 173a and the water injection through hole 173b penetrate the control valve 173; the suction through hole 173a and the water injection through hole 173b are substantially arranged at a phase interval of 90° or other angles in the circumferential direction of the control valve 173, so as to achieve the switching between suction and water injection; in addition, the water injection groove 173c communicates with the water injection through hole 173b at the outlet of the water injection through hole 173b; the water injection groove 173c extends a certain length along the axial direction of the control valve 173; the shape of the water injection groove 173c is not limited. The circumferential direction of the control valve 173 is the direction around the rotation axis.

[0104] Based on this, in the aspirator 100 provided in the second embodiment, the installation method is as follows: Pass the instrument channel opening 160 of the valve body 171 through the three-way installation hole 126 on the handle 120 (such as the upper housing 1201) for fixation. The fixation method is not limited, such as snap connection, glue bonding, or welding, etc.; Fix the first suction port 1711 of the valve body 171 to the proximal end of the suction channel 140 (such as the suction pipe 141); Align and lap the second suction port 1712 on the valve body 171 at the first suction installation hole 1241 and fix it. The fixation method is not limited; Align and lap the distal end of the suction connection pipe 181 at the second suction installation hole 1242 and fix it. The fixation method is not limited, and glue bonding, etc. can be selected; Optionally, the attraction adjustment hole groove 183 of the suction connection pipe 181 is exactly placed in the installation groove of the sealing installation structure 123 and sealed; In addition, insert the distal end of the suction joint 182 into the proximal end of the suction connection pipe 181 and fix it; Connect the distal end of the hose 191 to the water injection installation hole 1243 and fix it. The fixation method is not limited, and glue bonding, etc. can be selected; The proximal end of the hose 191 is externally connected to a drip device. In this way, when injecting water, the water flow will pass through the hose 191, the water injection installation hole 1243, the water injection through-hole 173b, the water injection groove 173c, the first suction installation hole 1241, the second suction port 1712, the valve body 171, and the suction channel 140 to reach the lesion site and wash the lens 131.

[0105] More specifically, during actual use, when the control valve 173 is rotated to a position where the suction through-hole 173a communicates with the first suction installation hole 1241, the suction passage 180 communicates with the valve body 171 to perform suction, and at the same time, water injection is closed. At this time, the user can hold the handle 120 (with the thumb placed on the surface where the suction adjustment hole 121 is located). When reaching the hematoma, completely block the suction adjustment hole 121 with the thumb. At this time, the suction force is the largest. If you want to reduce the suction force, the thumb can slide to reduce the blocking amount of the suction adjustment hole 121; If instrument treatment is required, in this state, an instrument can be inserted through the instrument channel opening 160 and locked with an external locking joint, and then the instrument can be used for diagnosis and treatment.

[0106] If the field of view is blurred at this time, the drip device can be opened, that is, when the control valve 173 is rotated to a position where the water injection through-hole 173b communicates with the water injection installation hole 1243, the water injection passage 190 communicates with the valve body 171 to perform water injection, and at the same time, suction is closed. The water flow can then reach the lesion site through the corresponding structure and wash the field of view in front of the lens 131.

[0107] It should also be understood that when the water injection channel 150 and the suction channel 140 share a channel, the water injection pipe 151 in the main body pipe 110 can be cancelled, and only the suction pipe 141 is retained. The suction pipe 141 can be used for both suction and cleaning. Compared with the case where the water injection channel 150 and the suction channel 140 are independently arranged, the advantage of sharing a channel is that the structure is simpler, the entire aspirator 100 is lighter and more convenient, and the cross-sectional size of the suction channel 140 can be larger, and the suction and water injection efficiency is higher. Correspondingly, for the head end seat 112, the water injection hole 1123 is cancelled, and only the suction hole 1124 is retained.

[0108] In addition, in the aspirator 100 provided in the second embodiment of the present application, the valve body 171 can also be replaced with a two-way valve. Only the first suction port 1711 and the second suction port 1712 are retained on the two-way valve, and the instrument channel port 160 is cancelled, so that the aspirator 100 is only used for suction or cleaning. At this time, the axes of the first suction port 1711 and the second suction port 1712 are not limited to being arranged at an angle, and can also coincide.

[0109] In summary, the aspirator and aspiration system provided by the present invention have at least the following advantages:

[0110] The endoscope 130 in the aspirator 100 of the present invention does not occupy the suction channel 140, ensuring the smoothness of the suction channel 140, and thus can smoothly aspirate the hematoma. Especially for severely adhered hematomas, a large suction force can also be maintained, greatly improving the suction efficiency and the effectiveness of suction.

[0111] The aspirator 100 of the present invention is also provided with a water injection channel 150 for flushing the endoscope 130. After flushing, the field of view of the lens 131 is cleaned and brightened, greatly improving the visualization effect.

[0112] In the aspirator 100 of the present invention, it can also be switched to the instrument treatment mode. In the instrument treatment mode, the instrument channel port 160 is communicated with the suction channel 140, so that the auxiliary or treatment instrument can extend into the suction channel 140 through the instrument channel port 160, achieving the effect of auxiliary treatment and further improving the surgical efficiency.

[0113] The guide 200 of the present invention can be used for puncture to establish a working channel first. During the puncture process, the occluder 220 occludes the protection sheath 210, which can protect the tissue from unnecessary damage and improve the surgical safety. And after the puncture, the protection sheath 210 can be used as the working channel of the aspirator 100, which is convenient for inserting and removing the aspirator 100 during the operation. It can not only readjust the aspirator 100, but also will not damage the tissue, and has good safety.

[0114] The above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention in any way. Any changes and modifications made by those of ordinary skill in the art of the present invention based on the above disclosure fall within the scope of protection of the technical solution of the present invention.

Claims

1. A suction device for removing hematomas, characterized in that, Comprising: A main body tube, a handle, and an endoscope; the proximal end of the main body tube is connected to the handle; the distal portion of the endoscope is disposed inside the distal end of the main body tube; an aspiration channel and a water injection channel are provided along the axial direction of the interior of the main body tube, both the aspiration channel and the water injection channel penetrate through the main body tube, and the endoscope is independently arranged relative to the aspiration channel and the water injection channel.

2. The aspirator according to claim 1, characterized in that, The aspiration channel and the water injection channel are independently arranged, or the aspiration channel and the water injection channel share a common channel.

3. The aspirator according to claim 1 or 2, characterized in that, The aspiration channel is eccentrically arranged with respect to the main body tube.

4. The aspirator according to claim 2, characterized in that, The aspiration channel and the water injection channel are independently arranged, and the endoscope and the water injection channel are arranged circumferentially along the outer side of the aspiration channel on the main body tube.

5. The aspirator according to claim 1 or 2, characterized in that, The distal end of the main body tube includes a head end seat, and the head end seat is provided with an independently arranged lens mounting hole and a light source mounting hole; both the lens mounting hole and the light source mounting hole axially penetrate through the head end seat; the lens mounting hole is provided with the lens of the distal portion; the light source mounting hole is provided with the light source of the distal portion.

6. The aspirator according to claim 5, characterized in that, The distal end face of the head end seat is provided with a groove, and both the lens mounting hole and the light source mounting hole start from the bottom of the groove and axially penetrate through the proximal end face of the head end seat.

7. The aspirator according to claim 5, characterized in that, The number of the light source mounting holes is two, and the two light source mounting holes are distributed on both circumferential sides of the lens mounting hole along the head end seat, and each light source mounting hole is provided with one light source.

8. The aspirator according to claim 5, characterized in that, The head end seat is further provided with a water injection hole independently arranged from the lens mounting hole and the light source mounting hole, the water injection hole axially penetrates through the head end seat, the water injection hole is located between one light source mounting hole and the lens mounting hole, and the distal end of the water injection channel includes the water injection hole.

9. The aspirator according to claim 5, characterized in that, The head end seat is further provided with an aspiration hole independently arranged from the lens mounting hole and the light source mounting hole, the aspiration hole axially penetrates through the head end seat, and the distal end of the aspiration channel includes the aspiration hole.

10. The aspirator according to claim 9, characterized in that, The head end seat is further provided with a water injection hole independently arranged from the lens mounting hole, the light source mounting hole, and the aspiration hole, the water injection hole axially penetrates through the head end seat, and the lens mounting hole, the light source mounting hole, and the water injection hole are sequentially arranged circumferentially along the outer side of the aspiration hole on the head end seat.

11. The aspirator according to claim 5, characterized in that, The light source is closer to the distal end face of the head end seat than the lens.

12. The aspirator according to claim 2, characterized in that, The aspiration channel and the water injection channel are independently arranged, the main body tube is a single-chamber tube, and an independently arranged water injection pipe and a suction pipe are provided in the lumen of the main body tube, the suction pipe is used to provide the aspiration channel, the water injection pipe is used to provide the water injection channel, or the aspiration channel and the water injection channel share a common channel, the main body tube is a single-chamber tube, and a suction pipe is provided in the lumen of the main body tube, and the suction pipe is used to provide the aspiration channel and the water injection channel.

13. The aspirator according to claim 1 or 2, characterized in that, It further includes an instrument channel port connected to the handle, the instrument channel port is on the same axis as the aspiration channel, and the instrument channel port is configured to be selectively communicable or non-communicable with the aspiration channel, or the instrument channel port is configured to be constantly communicated with the aspiration channel.

14. The aspirator according to claim 13, characterized in that, It further includes a tee structure provided on the handle. The tee structure includes a valve body having a first suction port, a second suction port, and the instrument channel port. The first suction port is connected to the proximal end of the suction channel. The second suction port is connected to a suction passage provided in the handle. The axis of the first suction port coincides with the axis of the instrument channel port. The axis of the second suction port is arranged at an angle to the axis of the first suction port.

15. The aspirator according to claim 14, characterized in that, The tee structure further includes a switching valve core rotatably mounted on the valve body. The switching valve core can keep the suction passage in constant communication with the suction channel and can open and close the instrument channel port. The switching valve core has a first position and a second position and can be switched between the first position and the second position. When the switching valve core is in the first position, the instrument channel port is closed so that the instrument channel port is not in communication with the suction channel. When the switching valve core is in the second position, the instrument channel port is opened so that the instrument channel port is in communication with the suction channel.

16. The aspirator according to claim 1 or 2, characterized in that, It further includes a valve body and a control valve provided on the handle. The valve body has a first suction port and a second suction port. A valve core mounting hole is provided on the handle. The control valve is rotatably mounted in the valve core mounting hole. The hole wall of the valve core mounting hole is connected with a first suction mounting hole, a second suction mounting hole, and a water injection mounting hole. The first suction port is connected to the proximal end of the suction channel. The second suction port is connected to the first suction mounting hole. The second suction mounting hole is connected to the suction passage in the handle. The water injection mounting hole is connected to the water injection passage in the handle. The control valve is configured to be able to selectively connect the suction passage to the valve body or connect the water injection passage to the valve body, so that the water injection channel and the suction channel share a channel.

17. The aspirator according to claim 16, characterized in that, The control valve is provided with a suction through hole, a water injection through hole, and a water injection groove. The suction through hole and the water injection through hole are arranged at a certain angle along the circumferential direction of the control valve. The water injection groove communicates with the water injection through hole at the outlet of the water injection through hole. When the control valve rotates to a position where the suction through hole communicates with the first suction mounting hole, the suction passage is connected to the valve body for suction through the suction channel. When the control valve rotates to a position where the water injection through hole communicates with the water injection mounting hole, the water injection passage is connected to the valve body for water injection through the suction channel.

18. The aspirator according to claim 1 or 2, characterized in that, An independent suction passage and a water injection passage are provided inside the handle. The proximal end of the suction channel is connected to the distal end of the suction passage. The proximal end of the suction passage extends out from the proximal end of the handle and is used to connect to a suction device. The proximal end of the water injection channel is connected to the distal end of the water injection passage. The proximal end of the water injection passage extends out from the proximal end of the handle and is used to connect to a drip device.

19. An attracting system, characterized in that, Comprising a guide and an aspirator as described in any one of claims 1-18; the guide comprising a protective sheath and a plug; the plug being configured to be partially inserted into the protective sheath to block the protective sheath; the protective sheath being configured to guide the aspirator to a target position after the plug is withdrawn from its lumen.

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