CN219127584U - Flushing aspirator - Google Patents

Abstract

The utility model discloses a flushing aspirator, which comprises a main body part and a control valve, wherein the main body part is provided with a first pipe cavity; the control valve comprises a valve body connected to the main body piece and a valve core arranged in the valve body, the valve body is provided with a suction channel and a discharge channel communicated with the suction channel, the valve core comprises a connecting part which is arranged in the suction channel in a penetrating manner and can move in the suction channel, and a sealing part connected to the connecting part, and the sealing part is used for being abutted with the valve body to close the suction channel; wherein the connecting portion and the inner wall of the suction channel define a first annular gap, and the valve core is configured to: when the valve spool is moved to an open position in which the sealing portion is separated from the valve body, the discharge passage communicates with the first lumen through the first annular gap. The first annular gap is defined between the connecting part and the inner wall of the suction channel, so that the passing capacity of the suction channel can be increased, the blocking problem of the suction channel is improved, and the failure rate of the flushing aspirator is reduced.

Description

Flushing aspirator

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a flushing aspirator.

Background

In the endoscopic surgery process, the flushing aspirator is used for sucking tissue fragments, the external negative pressure source is used for sucking internal tissues through the suction channel in the flushing aspirator, the flushing aspirator is provided with a valve core which can move in the suction channel to control the opening and closing of the suction channel, and a guide structure is usually arranged on the valve core for realizing the stable movement of the valve core, however, the guide structure can possibly cause the retention of the tissues with larger volume, so that the problems of channel blockage, incapability of resetting the valve core and the like affect the normal use of the flushing aspirator.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the flushing aspirator, which can improve the blockage problem of the suction channel and reduce the failure rate of the flushing aspirator.

An irrigation aspirator according to an embodiment of the first aspect of the present utility model includes:

a body member having a first lumen;

the control valve comprises a valve body connected to the main body piece and a valve core arranged in the valve body, the valve body is provided with a suction channel and a discharge channel communicated with the suction channel, the valve core comprises a connecting part penetrating the suction channel and capable of moving in the suction channel, and a sealing part connected to the connecting part, and the sealing part is used for being abutted with the valve body to close the suction channel;

wherein the connecting portion and the inner wall of the suction passage define a first annular gap, the spool being configured to: when the valve spool moves to an open position in which the sealing portion is separated from the valve body, the discharge passage communicates with the first lumen through the first annular gap.

The flushing aspirator according to the embodiment of the utility model has at least the following beneficial effects:

the first annular gap is defined between the connecting part and the inner wall of the suction channel, so that the passing capacity of the suction channel can be increased, the blocking problem of the suction channel is improved, and the failure rate of the flushing aspirator is reduced.

According to some embodiments of the utility model, the control valve includes at least two guide structures for guiding movement of the valve spool, each of the guide structures being disposed in sequence along a movement direction of the valve spool, and each of the guide structures being disposed on a side of the discharge passage away from the main body member along the movement direction.

According to some embodiments of the utility model, the circumferential surface of the connecting portion is provided with a ring groove, and the guiding structure includes a sealing ring disposed in the ring groove, and the sealing ring abuts against the inner wall of the suction channel.

According to some embodiments of the utility model, the guide structure includes a flange provided to an inner wall of the suction passage, the flange abutting against a peripheral surface of the connecting portion.

According to some embodiments of the utility model, the minimum width of the first annular gap is greater than or equal to 3mm.

According to some embodiments of the utility model, the valve body further has a communication passage provided between the suction passage and the first lumen, a cross-sectional area of the communication passage being larger than a cross-sectional area of the suction passage, the valve spool being configured to: when the sealing portion moves into the communication passage, the sealing portion is separated from the valve body.

According to some embodiments of the utility model, the valve body is configured as one or a combination of the following:

when the valve core moves to an opening position where the sealing part is separated from the valve body, the connecting part and the inner wall of the communication channel define a second annular gap, and the minimum width of the second annular gap is larger than or equal to the minimum width of the first annular gap;

when the valve core moves to an opening position where the sealing part is separated from the valve body, a third annular gap is defined by the sealing part and the inner wall of the communication channel, and the minimum width of the third annular gap is larger than or equal to the minimum width of the first annular gap.

According to some embodiments of the utility model, the suction channel comprises a first tube section and a second tube section, the first tube section is communicated to the first tube cavity through the second tube section, the cross-sectional area of the second tube section gradually decreases along the direction from the second tube section to the first tube section, and the sealing part is configured to abut against the inner wall of the second tube section to close the suction channel.

According to some embodiments of the utility model, a maximum width of a cross section of the first lumen is less than or equal to a minimum width of the first annular gap.

An irrigation aspirator according to an embodiment of the second aspect of the present utility model includes:

a body member having a first lumen;

the control valve, including connect in the body spare valve body and set up in the valve body is internal, the valve body has suction passageway and intercommunication suction passageway's discharge passageway, the valve core is including wearing to locate suction passageway and can be in the connecting portion that the suction passageway moved, and connect in the sealing portion of connecting portion, sealing portion be used for with the valve body butt is in order to close suction passageway, connecting portion with suction passageway's inner wall defines first clearance, the valve core is configured to: when the valve core moves to an open position in which the sealing portion is separated from the valve body, the discharge passage communicates with the first lumen through the first gap;

wherein the maximum width of the cross section of the first lumen is less than or equal to the minimum width of the first gap.

The flushing aspirator according to the embodiment of the utility model has at least the following beneficial effects: the maximum width of the cross section of the first lumen is smaller than or equal to the minimum width of the first gap, and after the first lumen screens the human tissue fragments, the human tissue fragments can pass through the first gap, so that the blockage in the suction channel is avoided, and the flushing suction device is prevented from being broken down.

According to some embodiments of the utility model, the valve body further has a communication passage provided between the suction passage and the first lumen, a cross-sectional area of the communication passage being larger than a cross-sectional area of the suction passage, the valve spool being configured to: when the sealing portion moves into the communication passage, the sealing portion is separated from the valve body.

According to some embodiments of the utility model, the valve body is configured as one or a combination of the following:

when the valve core moves to an opening position where the sealing part is separated from the valve body, the connecting part and the inner wall of the communication channel define a second gap, the minimum width of the second gap is larger than or equal to the minimum width of the first gap, and the maximum width of the cross section of the first pipe cavity is smaller than or equal to the minimum width of the first gap;

when the valve core moves to an opening position where the sealing part is separated from the valve body, a third gap is defined between the sealing part and the inner wall of the communication channel, the minimum width of the third gap is larger than or equal to the minimum width of the first gap, and the maximum width of the cross section of the first pipe cavity is smaller than or equal to the minimum width of the first gap.

According to some embodiments of the utility model, the body member further has a second lumen disposed sequentially with the first lumen along the suction direction, the second lumen having a cross-sectional area greater than a cross-sectional area of the first lumen.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a cross-sectional view of an irrigation aspirator according to an embodiment of a first aspect of the present utility model;

FIG. 2 is a schematic view showing the closing of the suction channel in the embodiment of the first aspect of the present utility model;

FIG. 3 is an enlarged schematic view of area A of FIG. 2;

FIG. 4 is a schematic view showing the opening of the suction channel in the embodiment of the first aspect of the present utility model;

FIG. 5 is an enlarged schematic view of area B of FIG. 4;

fig. 6 is a schematic view of a guide structure provided in a suction passage in the related art.

Reference numerals:

the main body 100, the first lumen 110, the second lumen 120, the control valve 200, the valve body 210, the suction passage 211, the first tube segment 2111, the second tube segment 2112, the discharge passage 212, the communication passage 213, the installation chamber 214, the first region 215, the second region 216, the valve body 220, the connection portion 221, the sealing portion 222, the first abutting portion 2221, the second abutting portion 2222, the valve key 223, the elastic member 224, the first annular gap 230, the second annular gap 231, the third annular gap 232, the first guide structure 240, the annular protrusion 241, the second guide structure 250, the flange 261, the guide rib 300, the flushing passage 310.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

In the description of the present utility model, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Laparoscopic surgery is one of the representatives of minimally invasive surgery by creating a small passageway in the abdominal wall of the patient for access by minimally invasive instruments, whereby surgical instruments and electronic mirrors for monitoring intra-luminal conditions are accessed by medical personnel through manipulation of the surgical instruments. Compared with the traditional open surgery, the endoscopic surgery has the advantages of small trauma, quick recovery of patients and the like, and therefore, the endoscopic surgery becomes the choice of more and more patients. In the endoscopic surgery process, medical staff can perform operations such as cutting stripping, electrocoagulation hemostasis, flushing and the like, and after the abdominal cavity flushing is finished, waste liquid is sucked and discharged outside a human body by means of a flushing aspirator.

In the related art, the flushing aspirator can independently control the opening and closing of the suction channel 211 through the valve core 220, in order to realize the stable movement of the valve core 220, a guide structure is usually arranged on the valve core 220, but besides the cleaning liquid, the waste liquid is often mixed with the human tissue fragments stripped by the operation, the guide structure can divide the suction channel 211 into a plurality of small chambers, the tissues with larger volume possibly stay when passing through, so that the problems of channel blockage, incapability of resetting the valve core 220 and the like are caused, and the normal use of the flushing aspirator is further affected. An embodiment of the first aspect of the present utility model proposes a flushing aspirator capable of improving the clogging problem of the suction passage 211 by adjusting the gap shape between the valve body 220 and the suction passage 211.

Specifically, as shown in fig. 1, fig. 1 is a schematic structural diagram of an irrigation aspirator having an irrigation mode and an aspiration mode, the irrigation aspirator according to the present utility model includes a main body member 100 and a control valve 200, the main body member 100 forms a main body structure of the irrigation aspirator, an inlet end of the main body member 100 is externally connected with an aspiration tube for extending into an abdominal cavity to absorb waste liquid, and the other end is externally connected with a negative pressure source through an aspiration channel 211 to withdraw waste liquid through the aspiration channel 211. The main body member 100 can also be connected with a liquid supply pump through the flushing channel 310, the liquid supply pump can provide flushing liquid, when the flushing operation is needed in the operation process, the suction channel 211 is closed, the flushing channel 310 is opened, so that the flushing suction device is switched to a flushing mode, the liquid supply pump works, and the flushing liquid is supplied to the inside of the abdominal cavity through the flushing channel 310 and the first pipe cavity 110 in sequence for flushing. After the cleaning is completed, the irrigation aspirator is switched to an aspiration mode, that is, the aspiration channel 211 is opened and the irrigation channel 310 is closed, the negative pressure source is operated, and the waste liquid in the abdominal cavity is discharged through the first lumen 110 of the body member 100.

As shown in fig. 2, the control valve 200 can control the opening and closing of the suction passage 211. Specifically, the control valve 200 includes a valve body 210 connected to the main body 100 and a valve body 220 disposed in the valve body 210, the valve body 210 having a suction passage 211 and a discharge passage 212 communicating with the suction passage 211, the discharge passage 212 communicating with a negative pressure source, the valve body 220 including a connection portion 221 and a sealing portion 222, the connection portion 221 penetrating the suction passage 211 and being movable in an axial direction of the suction passage 211, the sealing portion 222 being adapted to abut against the valve body 210 to close the suction passage 211.

The control valve 200 further comprises a valve key 223 and an elastic member 224, wherein one end of the valve body 210 away from the main body member 100 is provided with a mounting cavity 214, one end of the elastic member 224 is arranged in the mounting cavity 214, the other end of the elastic member is abutted with the valve key 223, one end of the connecting portion 221 is connected with the valve key 223, and the other end of the connecting portion is connected with the sealing portion 222. Referring to fig. 2 and 3, the valve key 223 is released, the valve body 220 is moved upward by the elastic member 224 until the sealing portion 222 abuts the valve body 210, and the suction passage 211 is closed. Referring to fig. 4 and 5, the valve key 223 is pressed, the valve body 220 is moved downward, the sealing part 222 is separated from the valve body 210, and the suction passage 211 is opened.

As shown in fig. 4, the valve body 210 is axially divided into a first region 215 and a second region 216 at the intersection position of the discharge passage 212 and the suction passage 211, and two dotted-line boxes in fig. 4 represent the first region 215 and the second region 216, respectively. The first region 215 is a portion distant from the main body member 100, the second region 216 is a portion close to the main body member 100, and the waste liquid flows from the first lumen 110 into the suction channel 211 of the second region 216 and is discharged through the discharge channel 212. In the related art, as shown in fig. 6, fig. 6 is a radial cross-sectional view of a connection portion, a plurality of guide ribs 300 extending along the axial direction of the connection portion 221 are provided on the outer circumferential surface of the connection portion 221, the guide ribs 300 are abutted against the inner wall of the suction channel 211 in the second region 216, and thus guiding of the valve core 220 can be achieved, the guide ribs 300 are arranged side by side along the circumferential direction of the connection portion 221, and gaps between the guide ribs 300 can pass through the waste liquid; however, this structure will separate the gap, reduce the cross-sectional area of the suction channel 211 that can pass through the waste liquid, and the larger fragments of human tissue will be blocked in the gap between the guide ribs 300, resulting in the failure of the flushing aspirator because the valve core 220 cannot be reset.

The connecting portion 221 of the present utility model defines a first annular gap 230 with the inner wall of the suction channel 211 in the second region 216, i.e., the gap is continuous in the circumferential direction of the suction channel 211, is not separated by a guide structure, and may be an annular gap having the same or substantially the same width throughout the gap. When the valve spool 220 is moved to an open position in which the sealing portion 222 is separated from the valve body 210, the discharge passage 212 communicates with the first lumen 110 through the first annular gap 230. In order to form the annular gap, one way is to eliminate the guiding structure on the connecting portion 221, so that the outer diameter of the connecting portion 221, especially the outer diameter of a part of the connecting portion 221 in the second region 216, can be reduced as much as possible under the premise of ensuring the structural strength of the valve core 220, and the cross-sectional area of the suction channel 211 passing through the waste liquid can be increased, so that the probability that a large volume of human tissue fragments blocks the suction channel 211 can be reduced.

In some embodiments, to achieve stable movement of the valve core 220, the control valve 200 includes at least two guiding structures for guiding movement of the valve core 220 to guide the valve core 220 at least two places, and the at least two guiding structures support the valve core 220 at multiple points compared to a case where no guiding structure or only a single guiding structure is provided, so that the movement process of the valve core 220 is more stable, and swing or shake of the valve core 220 during the movement process is reduced. As shown in fig. 4, the guide structures are disposed in sequence along the moving direction of the valve core 220, and each guide structure is disposed on a side of the discharge passage 212 away from the main body 100 along the moving direction. That is, each guide mechanism is provided in the suction passage 211 of the first region 215. The waste liquid flows from the discharge channel 212 after flowing into the suction channel 211 of the second region 216 from the first lumen 110, and does not flow through the suction channel 211 of the first region 215, so that the guide structure provided in the suction channel 211 of the first region 215 does not interfere with the discharge of the waste liquid. As shown in fig. 4, two guide structures, which are named as a first guide structure 240 and a second guide structure 250, are provided in the suction passage 211 of the first region 215 in a direction away from the body member 100.

In some embodiments, a guide structure may be provided on the connection part 221 and abut against an inner wall of the suction channel 211, as the first guide structure 240 shown in fig. 4. In a state where the valve body 220 is moved down and the suction passage 211 is opened, the first guide structure 240 is located at a side close to the second region 216, and in addition to the guide function, the guide structure also functions as a seal to prevent the waste liquid from flowing out through the suction passage 211 of the first region 215 in the suction mode. Specifically, the first guiding structure 240 includes a sealing ring, an annular protrusion 241, and a ring groove disposed on the annular protrusion 241, where a tiny gap is left between the outer peripheral surface of the annular protrusion 241 and the inner wall of the suction channel 211 so as to move, the annular protrusion 241 is provided with the ring groove, the sealing ring is disposed in the ring groove, and a part of the area of the sealing ring protrudes out of the annular protrusion 241 and elastically abuts against the inner wall of the suction channel 211, so that the valve core 220 can play a supporting and guiding role in the moving process of the valve core 220, and also can play a sealing role. Most areas of the sealing ring are covered by the annular protrusions 241, the sealing ring is not easy to loosen, and the service life is long.

As shown in fig. 2, when the valve body 220 moves to the state where the sealing portion 222 abuts against the valve body 210, the first guide structure 240 moves upward with the valve body 220, and the annular protrusion 241 also abuts against the flange 261 provided on the inner wall of the suction passage 211 to define the limit position of the upward movement of the valve body 220.

In other embodiments, the guide structure may also be disposed on the suction channel 211 and abut against the connection portion 221. A second guide structure 250, shown in fig. 2, is disposed on a side remote from the second region 216. Specifically, as shown in fig. 4, the second guide structure 250 may be configured such that a flange 261 is provided on an inner wall of the suction passage 211, the flange 261 is capable of abutting on a peripheral surface of the connection portion 221, and the connection portion 221 is capable of moving in an axial direction with respect to the flange 261. By the surface contact of the flange 261 and the connecting portion 221, the possibility of the valve core 220 swinging during movement is reduced, so that the movement of the valve core 220 is more stable, and the width of the first annular gap 230 is more uniform.

In some embodiments, the present utility model also ensures the throughput of the first annular gap 230 by specifying a minimum width of the first annular gap 230, specifically, the minimum width of the first annular gap 230 is greater than or equal to 3mm, i.e., the width of the first annular gap 230 should be greater than or equal to 3mm when the width of the first annular gap 230 is uniform, and the minimum width should be greater than or equal to 3mm when the width of the first annular gap 230 is non-uniform.

In some embodiments, as shown in fig. 4, the valve body 210 further has a communication channel 213 disposed between the suction channel 211 and the first lumen 110, the communication channel 213 having a cross-sectional area larger than that of the suction channel 211, and the sealing portion 222 is separated from the valve body 210 when the sealing portion 222 moves into the communication channel 213. The communication passage 213 functions to accommodate the sealing portion 222, and after entering the communication passage 213, since the cross-sectional area of the communication passage 213 is larger than that of the suction passage 211, a gap exists between the outer surface of the sealing portion 222 and the inner wall of the communication passage 213, which gap can allow the passage of the waste liquid.

On the basis of providing the communication passage 213, as shown in fig. 5, when the valve body 220 is moved to the open position in which the sealing portion 222 is separated from the valve body 210, the connecting portion 221 and the inner wall of the communication passage 213 define a second annular gap 231, and the minimum width of the second annular gap 231 should be greater than or equal to the minimum width of the first annular gap 230, so that tissue passing through the first annular gap 230 can also pass through the second annular gap 231, and stagnation of tissue between the connecting portion 221 and the inner wall of the communication passage 213 can be avoided.

Accordingly, the sealing portion 222 and the inner wall of the communication passage 213 define a third annular gap 232, the first annular gap 230, the second annular gap 231 and the third annular gap 232 are sequentially communicated, and the minimum width of the third annular gap 232 is greater than or equal to the minimum width of the first annular gap 230, so that tissue passing through the first annular gap 230 can also pass through the third annular gap 232, and tissue stagnation between the sealing portion 222 and the inner wall of the communication passage 213 can be avoided.

In some embodiments, as shown in fig. 5, the suction channel 211 includes a first tube segment 2111 and a second tube segment 2112, the first tube segment 2111 and the second tube segment 2112 each being located within the second region 216. The first tube segment 2111 communicates with the first lumen 110 through the second tube segment 2112, and when the communication passage 213 is provided, the first tube segment 2111 communicates with the communication passage 213 through the second tube segment 2112 to the first lumen 110.

Along the direction from the second tube segment 2112 to the first tube segment 2111, the cross-sectional area of the second tube segment 2112 gradually decreases, the inner wall of the second tube segment 2112 is tapered, and the sealing portion 222 includes a ring groove provided on the outer peripheral surface and a seal ring provided in the ring groove. During movement of the seal 222 in the direction of the second tube segment 2112 to the first tube segment 2111, the third annular gap 232 gradually decreases until the seal ring abuts the inner wall surface of the second tube segment 2112. After the sealing ring abuts against the inner wall surface of the second pipe section 2112, the valve core 220 can further slightly move along the direction from the second pipe section 2112 to the first pipe section 2111, the sealing portion 222 applies a larger pressing force to the inner wall surface of the second pipe section 2112, the sealing ring elastically deforms to form a sealing relationship with the fitting of the second pipe section 2112, the pressing force between the sealing ring and the second pipe section 2112 is larger, and the sealing effect is better.

Specifically, in this embodiment, as shown in fig. 5, the ring groove is disposed on the sealing portion 222 and defines two annular abutting portions on the sealing portion 222, so that for convenience of description, the two abutting portions are respectively named as a first abutting portion 2221 and a second abutting portion 2222 along the direction from the second pipe section 2112 to the first pipe section 2111, and the outer diameter of the second abutting portion 2222 is smaller than that of the first abutting portion 2221, so as to avoid the situation that when the sealing portion 222 abuts against the tapered inner wall of the second pipe section 2112, the second abutting portion 2222 abuts against the inner wall of the second pipe section 2112 rigidly, and further the elastic deformation of the sealing ring is interfered, and the sealing effect is affected. As shown in fig. 3, the outer diameter of the second abutting portion 2222 may be smaller than the inner diameter of the first pipe section 2111, and further, when the seal ring abuts against the tapered inner wall of the second pipe section 2112, the second abutting portion 2222 can move into the first pipe section 2111.

In some alternative embodiments, the sealing portion 222 is integrally made of an elastic material, and the sealing portion 222 is disposed around the connecting portion 221 or connected to one end of the connecting portion 221, and when the valve element 220 moves from the second pipe section 2112 to the first pipe section 2111, the sealing portion 222 can abut against an inner wall surface of the second pipe section 2112 and elastically deform to fit the inner cavity of the second pipe section 2112, so as to improve the sealing performance.

In some embodiments, the maximum width of the cross-section of the first lumen 110 is less than or equal to the minimum width of the first annular gap 230, such that fragments of human tissue that are able to enter the first lumen 110 are necessarily able to pass through the first annular gap 230, i.e., the first lumen 110 is able to screen human tissue, avoiding excessive tissue from entering the first annular gap 230, thereby further reducing the likelihood of blockage. It should be noted that, if the main body 100 is further provided with the second lumen 120 communicating with the first lumen 110, the larger body tissue may be blocked at the junction between the first lumen 110 and the second lumen 120, however, if the blockage is generated at the first annular gap 230, the liquid to be irrigated is hard to impact the body tissue in the first annular gap 230 even if the irrigation aspirator is switched from the suction mode to the irrigation mode, that is, the first lumen 110 is blocked, or the junction between the first lumen 110 and the second lumen 120 is blocked as compared with the blockage generated at the first annular gap 230, so that the difficulty in dredging the channel can be significantly reduced by setting the first lumen 110 for screening.

As shown in fig. 1 for example, the body member 100 further includes a coupling for coupling to a suction tube, the coupling having a second lumen 120 therein. The first lumen 110 is communicated with the suction tube through the second lumen 120, and in the suction mode, the waste liquid sequentially flows through the suction tube, the second lumen 120, the first lumen 110 and the suction channel 211, and in the flushing mode, the cleaning liquid sequentially flows through the external liquid supply tube, the first lumen 110, the second lumen 120 and the suction tube. The cross-sectional area of the second lumen 120 is greater than the cross-sectional area of the first lumen 110, so that when fragments of human tissue flow from the second lumen 120 into the first lumen 110, fragments of human tissue having a width greater than the first lumen 110 cannot enter the first lumen 110 and remain in the second lumen 120, and at this time, the irrigation aspirator is switched from the suction mode to the irrigation mode, so that fragments of human tissue can be irrigated from the second lumen 120.

In a second aspect of the present utility model, an irrigation aspirator is provided, comprising a main body member 100 and a control valve 200, and in particular, the irrigation aspirator of the present utility model comprises a main body member 100 and a control valve 200. The main body 100 forms a main body structure of the irrigation aspirator, the inlet end of the main body 100 is externally connected with an aspiration tube for extending into the abdominal cavity to absorb waste liquid, and the other end is externally connected with a negative pressure source through an aspiration channel 211 to withdraw the waste liquid through the aspiration channel 211.

The control valve 200 is capable of controlling opening and closing of the suction passage 211, and includes a valve body 210 connected to the main body 100 and a valve body 220 provided in the valve body 210, the valve body 210 having the suction passage 211 and a discharge passage 212 communicating with the suction passage 211, the discharge passage 212 communicating with a negative pressure source, the valve body 220 including a connection portion 221 and a sealing portion 222, the connection portion 221 penetrating the suction passage 211 and being movable in an axial direction of the suction passage 211, the sealing portion 222 being adapted to abut against the valve body 210 to close the suction passage 211. The connection portion 221 and the inner wall of the suction passage 211 define a first gap through which the discharge passage 212 communicates with the first lumen 110 when the valve body 220 is moved to the open position in which the sealing portion 222 is separated from the valve body 210.

In this embodiment, the maximum width of the cross section of the first lumen 110 is smaller than or equal to the minimum width of the first gap, and fragments of human tissue that can enter the first lumen 110 can also be discharged through the first gap without being blocked in the suction channel 211, that is, the first lumen 110 can screen human tissue, so as to avoid excessive tissue entering the first gap, thereby further reducing the possibility of blocking. It should be noted that, if the main body 100 is further provided with the second lumen 120 communicating with the first lumen 110, the larger body tissue may be blocked at the junction between the first lumen 110 and the second lumen 120, however, if the blockage occurs at the first gap, the liquid to be irrigated may not be impacted to the body tissue in the first gap, i.e. if the blockage occurs at the first gap, the blockage in the first lumen 110, or the junction between the first lumen 110 and the second lumen 120 is a problem that is relatively easy to solve, so that the difficulty in dredging the channel can be significantly reduced by setting the first lumen 110 for screening.

In this embodiment, the first gap may be an annular gap, or may not be an annular gap, and the screening action of the first lumen 110 may ensure that the human tissue can smoothly pass through the first gap even if the first gap is not an annular gap. Specifically, the connection portion 221 may be abutted to the inner wall of the suction channel 211 on one side, and the other side is disposed at an interval with the inner wall of the suction channel 211 to define a first gap, or a plurality of guide structures are disposed in the suction channel 211, each of the guide structures circumferentially surrounds the connection portion 221 and defines a first gap between adjacent guide structures, or the connection portion 221 and the suction channel 211 are coaxially disposed, and an annular first gap is defined between the connection portion 221 and the inner wall of the suction channel 211, which is not exhaustive. The first lumen 110 may be a circular lumen, a square lumen or any other lumen, and whichever lumen should satisfy that the maximum width of the cross section of the first lumen 110 is smaller than or equal to the minimum width of the first gap, after the first lumen 110 screens the fragments of human tissue, the fragments of human tissue that can pass through the first lumen 110 can also pass through the first gap, so as to avoid blocking in the suction channel 211, and cause the malfunction of the flushing aspirator.

Similar to the first embodiment, the valve body 210 of the present embodiment also has a communication passage 213 provided between the suction passage 211 and the first lumen 110, the communication passage 213 having a larger cross-sectional area than the suction passage 211, and the sealing portion 222 is separated from the valve body 210 when the sealing portion 222 moves into the communication passage 213. The communication passage 213 functions to accommodate the sealing portion 222, and after entering the communication passage 213, since the cross-sectional area of the communication passage 213 is larger than that of the suction passage 211, a gap exists between the outer surface of the sealing portion 222 and the inner wall of the communication passage 213, which gap can allow the passage of the waste liquid.

On the basis of providing the communication passage 213, when the valve body 220 is moved to the open position where the sealing portion 222 is separated from the valve body 210, the connecting portion 221 and the inner wall of the communication passage 213 define a second gap, and the minimum width of the second gap should be greater than or equal to the minimum width of the first gap, so that tissue more easily passes through the gap between the connecting portion 221 and the communication passage 213.

Accordingly, the sealing portion 222 and the inner wall of the communication channel 213 define a third gap, and the first gap, the second gap and the third gap are sequentially communicated, and a minimum width of the third gap is greater than or equal to a minimum width of the first gap, so that tissue more easily passes through the gap between the sealing portion 222 and the communication channel 213.

Based on the above, the probability of clogging of the communication passage 213 by the tissue can be reduced.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model. Furthermore, embodiments of the utility model and features of the embodiments may be combined with each other without conflict.

Claims (13)

1. A flush aspirator, comprising:

a body member having a first lumen;

the control valve comprises a valve body connected to the main body piece and a valve core arranged in the valve body, the valve body is provided with a suction channel and a discharge channel communicated with the suction channel, the valve core comprises a connecting part penetrating the suction channel and capable of moving in the suction channel, and a sealing part connected to the connecting part, and the sealing part is used for being abutted with the valve body to close the suction channel;

wherein the connecting portion and the inner wall of the suction passage define a first annular gap, the spool being configured to: when the valve spool moves to an open position in which the sealing portion is separated from the valve body, the discharge passage communicates with the first lumen through the first annular gap.

2. The irrigation aspirator according to claim 1 wherein the control valve comprises at least two guide structures for movement guiding of the valve cartridge, each of the guide structures being disposed in sequence along a movement direction of the valve cartridge, and each of the guide structures being disposed on a side of the discharge passage away from the main body member along the movement direction.

3. The irrigation aspirator according to claim 2, wherein the circumferential surface of the connection portion is provided with a ring groove, and the guide structure includes a sealing ring provided in the ring groove, the sealing ring being abutted against an inner wall of the aspiration channel.

4. The irrigation aspirator according to claim 2, wherein the guide structure includes a flange provided to an inner wall of the aspiration channel, the flange being abutted against a peripheral surface of the connection portion.

5. The irrigation aspirator according to claim 1, wherein the minimum width of the first annular gap is greater than or equal to 3mm.

6. The irrigation aspirator according to claim 1, wherein the valve body further has a communication channel disposed between the aspiration channel and the first lumen, the communication channel having a cross-sectional area greater than a cross-sectional area of the aspiration channel, the valve cartridge configured to: when the sealing portion moves into the communication passage, the sealing portion is separated from the valve body.

7. The irrigation aspirator according to claim 6 wherein the valve body is configured as one or a combination of the following:

when the valve core moves to an opening position where the sealing part is separated from the valve body, the connecting part and the inner wall of the communication channel define a second annular gap, and the minimum width of the second annular gap is larger than or equal to the minimum width of the first annular gap;

when the valve core moves to an opening position where the sealing part is separated from the valve body, a third annular gap is defined by the sealing part and the inner wall of the communication channel, and the minimum width of the third annular gap is larger than or equal to the minimum width of the first annular gap.

8. The irrigation aspirator according to claim 1 wherein the aspiration channel comprises a first tube segment and a second tube segment, the first tube segment being in communication with the first lumen through the second tube segment, the second tube segment gradually decreasing in cross-sectional area in a direction from the second tube segment to the first tube segment, the sealing portion being configured to abut an inner wall of the second tube segment to close the aspiration channel.

9. The irrigation aspirator according to claim 1 wherein the maximum width of the cross section of the first lumen is less than or equal to the minimum width of the first annular gap.

10. A flush aspirator, comprising:

a body member having a first lumen;

the control valve, including connect in the body spare valve body and set up in the valve body is internal, the valve body has suction passageway and intercommunication suction passageway's discharge passageway, the valve core is including wearing to locate suction passageway and can be in the connecting portion that the suction passageway moved, and connect in the sealing portion of connecting portion, sealing portion be used for with the valve body butt is in order to close suction passageway, connecting portion with suction passageway's inner wall defines first clearance, the valve core is configured to: when the valve core moves to an open position in which the sealing portion is separated from the valve body, the discharge passage communicates with the first lumen through the first gap;

wherein the maximum width of the cross section of the first lumen is less than or equal to the minimum width of the first gap.

11. The irrigation aspirator according to claim 10 wherein the valve body further has a communication channel disposed between the aspiration channel and the first lumen, the communication channel having a cross-sectional area greater than a cross-sectional area of the aspiration channel, the valve cartridge configured to: when the sealing portion moves into the communication passage, the sealing portion is separated from the valve body.

12. The irrigation aspirator according to claim 11 wherein the valve body is configured as one or a combination of the following:

when the valve core moves to an opening position where the sealing part is separated from the valve body, the connecting part and the inner wall of the communication channel define a second gap, the minimum width of the second gap is larger than or equal to the minimum width of the first gap, and the maximum width of the cross section of the first pipe cavity is smaller than or equal to the minimum width of the first gap;

when the valve core moves to an opening position where the sealing part is separated from the valve body, a third gap is defined between the sealing part and the inner wall of the communication channel, the minimum width of the third gap is larger than or equal to the minimum width of the first gap, and the maximum width of the cross section of the first pipe cavity is smaller than or equal to the minimum width of the first gap.

13. The irrigation aspirator according to claim 10 wherein the body member further has a second lumen disposed sequentially with the first lumen in an aspiration direction, the second lumen having a cross-sectional area larger than a cross-sectional area of the first lumen.

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