CN219720623U - Soaking sheath for endoscope and endoscope assembly - Google Patents

Abstract

The utility model discloses a soaking sheath for an endoscope and an endoscope assembly, and relates to the technical field of medical instruments. The soaking sheath comprises a joint and a sheath tube, wherein: the distal end of the connector is fixedly connected with the proximal end of the sheath tube and communicated with the proximal end of the sheath tube, the connector is used for accommodating at least part of a handle of the endoscope, and the sheath tube is used for accommodating an insertion part of the endoscope; the connector is provided with a liquid injection port, a liquid injection groove and a connecting channel, the liquid injection groove is formed in the inner surface of the connector, the first end of the liquid injection groove is communicated with the liquid injection port, the second end of the liquid injection groove extends to the connecting channel, and the connector is communicated with the sheath tube through the connecting channel. The scheme can improve the liquid injection efficiency and avoid the pollution of the endoscope handle.

Description

Soaking sheath for endoscope and endoscope assembly

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a soaking sheath for an endoscope and an endoscope assembly.

Background

Endoscopes are becoming increasingly widely used as instruments that gain access to the human body for probing. In the process of using the endoscope, the insertion portion thereof needs to be extended into the patient, and information of a target site (for example, a lesion) is acquired via a camera at the front end of the insertion portion.

In the related art, in order to prevent cross infection, the endoscope needs to be sterilized by placing the insertion portion in the soaking sheath before and after use. In practice, the related soaking sheath is inconvenient to inject disinfectant under the condition of placing an endoscope, the disinfectant is low in injection efficiency even if the disinfectant is forcibly injected, and the disinfectant is easy to adhere to the surface of the handle of the endoscope to cause pollution.

Disclosure of Invention

The utility model provides a soaking sheath for an endoscope and an endoscope assembly, which can improve the liquid injection efficiency and avoid the pollution of an endoscope handle.

In order to solve the problems, the utility model adopts the following technical scheme:

in a first aspect, embodiments of the present utility model provide an infusion sheath for an endoscope, the infusion sheath comprising a hub and a sheath tube, wherein:

the distal end of the connector is fixedly connected with the proximal end of the sheath tube and communicated with the proximal end of the sheath tube, the connector is used for accommodating at least part of a handle of the endoscope, and the sheath tube is used for accommodating an insertion part of the endoscope;

the connector is provided with a liquid injection port, a liquid injection groove and a connecting channel, the liquid injection groove is formed in the inner surface of the connector, the first end of the liquid injection groove is communicated with the liquid injection port, the second end of the liquid injection groove extends to the connecting channel, and the connector is communicated with the sheath tube through the connecting channel.

In some embodiments of the utility model, the fitting has a protrusion formed by bending a sidewall of the fitting and protruding radially outward to define the liquid injection groove on one side of an inner surface of the protrusion.

In some embodiments of the utility model, the liquid injection groove comprises an open section arranged corresponding to the liquid injection opening; and/or the liquid injection groove comprises at least one necking section which is arranged along the axial direction of the joint, and the necking section is arranged corresponding to the position of the reduction of the size of one side of the far end of the handle.

In some embodiments of the utility model, the connector has a support location on an inner surface thereof for supporting the handle to stop so that the distal end of the handle is spaced from the engagement channel.

In some embodiments of the present utility model, the second end of the liquid injection groove is provided with a guiding surface, and the guiding surface extends to the connection channel.

In some embodiments of the utility model, the liquid injection port is arranged at the proximal end of the joint and is communicated with an opening of the joint, and the opening is used for plugging the endoscope; or, the liquid injection port is arranged on the side wall of the joint.

In some embodiments of the utility model, the joint has a support position on the inner surface thereof, the support position is used for supporting the handle to stop; the support position comprises a support protrusion, the support protrusion is provided with a bearing surface, the surface of the handle is provided with a matching protrusion, and the support protrusion is in contact fit with the matching protrusion surface through the bearing surface under the condition that the endoscope is inserted into the soaking sheath; and/or, the support position comprises an arc-shaped support part.

In some embodiments of the utility model, the connector has at least one arm disposed on a proximal side thereof, at least a portion of the arm being curved to form a hitch, and/or at least a portion of the arm having a label attachment location disposed on a radially outward surface of the connector.

In some embodiments of the present utility model, a liquid outlet is provided at the distal end of the sheath, the soaking sheath further comprises a sealing plug, the sealing plug is inserted and matched in the liquid outlet, and the sealing plug is detachably connected with the sheath; and/or the sheath tube is a transparent tube body.

In a second aspect, an embodiment of the present utility model provides an endoscope assembly comprising an endoscope and the soaking sheath of the first aspect of the embodiment of the present utility model, wherein the endoscope is insertable into the soaking sheath.

The technical scheme adopted by the embodiment of the utility model can achieve the following beneficial effects:

in the soaking sheath disclosed by the embodiment of the utility model, the liquid injection groove is arranged on the inner surface of the joint, which is equivalent to the structure of a concave liquid injection runner on the inner surface of the joint, so that sufficient overflowing space can be provided for the disinfectant, and the liquid injection efficiency is improved.

Secondly, based on the existence of the liquid injection groove, the disinfectant can flow along the groove surface of the liquid injection groove, and the contact between the disinfectant and the surface of the handle is avoided, so that the adhesion of the handle to the disinfectant can be prevented, and the damage to the residual disinfectant on limbs when a user uses the endoscope is avoided.

Thirdly, the soaking sheath of the embodiment of the utility model realizes the circulation of disinfectant through the liquid injection groove, and no extra overflow gap between the joint and the handle is needed, and even the endoscope can be configured to be attached to the outline of the main body of the inner surface of the joint on the surface of the handle under the condition of being inserted into the soaking sheath, so that the assembly stability is improved, and the structural compactness of the soaking sheath is optimized.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model.

In the drawings:

FIG. 1 is a schematic view of an endoscope assembly according to some embodiments of the present utility model in a separated state;

FIG. 2 is a schematic view of an endoscope assembly according to some embodiments of the present utility model in an assembled state;

FIG. 3 is a schematic illustration of a joint according to some embodiments of the present utility model;

FIG. 4 is a schematic view of a joint according to some embodiments of the present utility model from another perspective;

FIG. 5 is a schematic view of the endoscope assembly (hidden section joint and sheath) and a partial enlarged view thereof at A and B in an assembled state, according to some embodiments of the present utility model;

fig. 6 is a side view of a soaking sheath according to some embodiments of the present utility model.

Reference numerals illustrate:

100-endoscope,

110-handle, 111-sleeve, 111 a-mating protrusion, 112-sheath, 120-insertion portion,

200-soaking sheath,

210-joint, 210 a-pouring spout, 210b 1-open section, 210b 2-reduced section, 210b 3-flow-guiding surface, 210 c-engagement channel, 210 d-opening, 211-protrusion, 212-support site, 212 a-support protrusion, 212a 1-bearing surface, 212 b-arc-shaped support, 213-guard arm, 213 a-hanging part, 213 b-label attachment site,

220-sheath tube, 221-liquid outlet and 230-sealing plug.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to specific embodiments of the present utility model and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In various embodiments of the present utility model, "proximal" and "distal" refer to the endoscope and its accessories in the environment of use, relative to the user's proximal-distal position, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

The technical scheme disclosed by each embodiment of the utility model is described in detail below with reference to the accompanying drawings.

In the related endoscope technology, the endoscope is arranged in the soaking sheath and then is injected with the disinfectant, so that one-hand operation can be realized, the operation difficulty is reduced, the volume of the disinfectant under the condition that the endoscope is arranged in the soaking sheath is convenient to observe, and the overflow or the shortage of the disinfectant is avoided. However, in practice, in the case of placing the endoscope in the soaking sheath, the infusion efficiency is significantly reduced, and the surface of the handle of the endoscope is adhered with disinfectant, causing injury to the user.

As a result of studies, the inventors have found that the above-described problems are mainly caused by insufficient overcurrent clearance between the handle surface of the endoscope and the inner surface of the joint. Specifically, the arrangement of the soaking sheath joint needs to take the problem of stability after the endoscope is inserted into consideration, so that the gap between the soaking sheath joint and the endoscope needs to be reduced as much as possible, so as to avoid shaking after assembly. Thus, when the related soaking sheath is used for injecting liquid under the condition of placing an endoscope, the liquid injection efficiency is poor due to too small overflow; meanwhile, the disinfectant can adhere to the surface of the endoscope handle due to insufficient space for passing the disinfectant.

In view of the above, some embodiments of the present utility model provide an immersion sheath for an endoscope, which addresses the above-described related art drawbacks by providing a recessed liquid injection groove inside a joint.

Referring to fig. 1 to 6, an immersion sheath 200 according to an embodiment of the present utility model includes a connector 210 and a sheath tube 220, wherein:

the distal end of the connector 210 is fixedly connected to and in communication with the proximal end of the sheath 220, the connector 210 being adapted to receive at least a portion of the handle 110 of the endoscope 100, the sheath 220 being adapted to receive the insertion portion 120 of the endoscope 100; the connector 210 has a liquid injection port 210a, a liquid injection groove 210b and a connection channel 210c, the liquid injection groove 210b is disposed on the inner surface of the connector 210, a first end of the liquid injection groove 210b is communicated with the liquid injection port 210a, a second end of the liquid injection groove 210b extends to the connection channel 210c, and the connector 210 is communicated with the sheath 220 through the connection channel 210c.

It will be appreciated that the connector 210 has an opening 210d through which the endoscope 100 may be inserted into the infusion sheath 200; for distinction of the soaking sheath 200 with respect to "proximal" and "distal", taking the connector 210 as an example, the distal end of the connector 210 refers to the end thereof connected to the sheath 220, and the proximal end of the connector 210 refers to the end thereof near the opening 210d thereof.

Since the connector 210 is in communication with the sheath 220, the sterilization fluid can flow into the sheath 220 by injecting the sterilization fluid into one side of the connector 210 to sterilize the insertion portion 120 of the endoscope 100 disposed in the sheath 220. Specifically, the distal end of the connector 210 has an interface, which is fixedly connected to the sheath 220 through the interface, and the connection channel 210c communicates with the interface, so that the connection channel 210c communicates with the proximal end of the sheath 220, and thus the disinfectant flows into the sheath 220 through the connection channel 210c.

In the embodiment of the present utility model, the connector 210 does not limit the receiving degree of the handle 110 of the endoscope 100, and as shown in fig. 2, the connector 210 of the soaking sheath 200 may receive a part of the handle 110, but it may also receive all of the handle 110.

Regarding the liquid injection groove 210b, a concave structure corresponding to the main contour of the inner surface of the joint 210 can be configured inside the joint 210, so that the joint 210 can support the handle 110 through the main contour of the inner surface of the joint, and a liquid injection flow channel can be formed in the liquid injection groove 210b, that is, an overflow space is provided for the disinfectant. By presetting, the liquid injection groove 210b can be configured to provide a proper overflow space so as to improve the liquid injection efficiency.

Meanwhile, as shown in fig. 5, due to the existence of the liquid injection groove 210b, after the sterilizing liquid is injected through the liquid injection port 210a, the sterilizing liquid can flow along the groove surface of the liquid injection groove 210b (see the dotted arrow in fig. 5 in detail), and the sterilizing liquid is prevented from contacting the surface of the handle 110, so that the handle 110 is prevented from adhering to the sterilizing liquid, and thus injury caused by residual sterilizing liquid on limbs when a user uses the endoscope 100 is avoided.

In addition, compared with the related art that an overflow gap needs to be reserved between the inner surface of the connector 210 and the surface of the handle 110, the soaking sheath 200 of the embodiment of the present utility model realizes the circulation of the disinfectant through the liquid injection groove 210b, so that the overflow gap is not required to be additionally provided, and even the endoscope 100 can be configured so that the surface of the handle 110 is attached to the contour of the inner surface main body of the connector 210 under the condition of being inserted into the soaking sheath 200, thereby not only improving the assembly stability, but also optimizing the structural compactness of the soaking sheath 200.

The soaking sheath 200 disclosed in the embodiment of the present utility model is not limited in its application, and can be used for a reusable endoscope, and also can be used for a limited-use endoscope. In a scenario where the endoscope is used for different patients or a multi-use scenario for the same patient, the endoscope may be placed in the soaking sheath 200 for sterilization treatment at a use gap period, and the soaking sheath 200 may also be used as a placement device for the endoscope.

The liquid injection port 210a and the liquid injection groove 210b belong to a matching structure, and the specific number of the liquid injection port 210a and the liquid injection groove 210b is not limited in the embodiment of the present utility model, as shown in fig. 3 to fig. 6, two liquid injection ports may be symmetrically distributed on the joint 210, and of course, one, three, four or other numbers may be used; in the case where there are a plurality of the pouring ports 210a and the pouring tanks 210b, they are preferably uniformly distributed in the circumferential direction of the joint 210.

In order to facilitate the illustration of the layout relationships and the related azimuth relationships between the structures, a spatial coordinate system is constructed in the drawings of the embodiments of the present utility model, but the layout and the azimuth relationships of the structures in the embodiments of the present utility model are not limited. For example, the soaking sheath 200 is located in the axial direction, that is, approximately in the X-axis direction, and matches the extending direction of the insertion portion 120 of the endoscope 100.

In the embodiment of the present utility model, the liquid injection groove 210b may be constructed in various manners, for example, the liquid injection groove 210b may be formed by hollowing out the side wall of the joint 210 at one side of the inner surface thereof.

In another embodiment, as shown in fig. 3 to 6, the joint 210 has a protrusion 211, and the protrusion 211 is formed by bending a sidewall of the joint 210 and protruding radially outwards to define a liquid injection groove 210b on one side of an inner surface of the protrusion 211. In the illustration, the radial direction of the joint 210 lies in a plane in which the Y-axis and the Z-axis lie.

Under such a layout, since the side wall of the joint 210 is bent to form the liquid injection groove 210b, the side wall of the joint 210 corresponding to the liquid injection groove 210b does not need to be thinned, so that the joint 210 is ensured to have higher strength at the position corresponding to the liquid injection groove 210b, and the liquid injection efficiency is prevented from being reduced or the handle 110 of the endoscope 100 is prevented from being polluted due to the damage of the liquid injection groove 210b.

Meanwhile, as the convex part 211 is of a bending structure, the cross-sectional area of the side wall of the joint 210 corresponding to the liquid injection groove 210b is increased, so that the strength of the joint 210 corresponding to the liquid injection groove 210b is further improved, and the joint has better damage resistance.

As shown in FIG. 5, in some embodiments of the present utility model, the liquid injection groove 210b may include an open section 210b1 corresponding to the liquid injection port 210a, so as to increase the open area at the liquid injection port 210a, that is, increase the operation space for the liquid injection operation, thereby facilitating the liquid injection operation, and avoiding the situation that the disinfection liquid drops fall on the handle 110 of the endoscope 100 due to the too small operation space.

And/or, as shown in fig. 5, in some embodiments of the present utility model, the liquid injection groove 210b includes at least one reduced-diameter section 210b2 arranged along the axial direction of the joint 210, the reduced-diameter section 210b2 being disposed corresponding to the reduced-diameter portion of the distal end side of the handle 110.

It will be appreciated that in the structural design of endoscope 100, since the distal end of handle 110 is required to lead out of elongate insertion portion 120, the radial dimension of the distal end of handle 110 will be tapered to accommodate insertion portion 120; for example, as shown in fig. 5, the distal side of the handle 110 includes a sleeve 111 and a sheath 112, and there is a radial reduction in the size of the connection of the sleeve 111 to the sheath 112. With this arrangement, the soaking sheath 200 according to the embodiment of the present utility model can be adapted to the portion of the handle 110 with reduced radial dimension through the reduced section 210b2 of the connector 210, thereby improving the compactness of the structure and also being beneficial to improving the assembly stability of the endoscope 100 and the soaking sheath 200.

Further, the different sections of the liquid injection groove 210b can be smoothly transited, which is beneficial to the flow of the disinfectant, prevents the liquid accumulation, and reduces the risk of the concentration of the internal stress of the joint 210.

In some embodiments of the present utility model, as shown in fig. 5 and 6, the connector 210 has a support 212 provided on an inner surface thereof, and the support 212 is used to support the handle 110 to stop so that the distal end of the handle 110 is spaced apart from the engagement channel 210c.

It can be appreciated that the support 212 acts as a limit stop for the handle 110 of the endoscope 100, and can prevent the handle 110 from being excessively inserted into the joint 210, thereby avoiding damage to the joint 210 due to a crush. Meanwhile, the configuration of the support 212 according to the embodiment of the present utility model can limit the extension length of the handle 110 in the connector 210, and compared with the scheme that the distal end of the handle 110 extends into the connecting channel 210c, the scheme that the distal end of the handle 110 and the connecting channel 210c are spaced apart can define a larger flow gap therebetween, so as to facilitate the circulation of the disinfectant, thereby improving the injection efficiency of the disinfectant and avoiding the disinfectant from adhering to the distal end of the handle 110.

As shown in fig. 5, in some embodiments of the present utility model, the second end of the liquid injection groove 210b is provided with a guiding surface 210b3, and the guiding surface 210b3 extends to the connection channel 210c. Under the layout, the flow guide surface 210b3 can guide the disinfectant to flow to the connecting channel 210c, so that the smoothness of the disinfectant flowing at the bottom of the liquid injection groove 210b can be improved, and the disinfectant can be prevented from having a hydrops problem at the position.

As shown in fig. 5, the diversion surface 210b3 is a cambered surface, which may be another surface shape such as an inclined surface.

In the embodiment of the present utility model, the specific arrangement position of the liquid injection port 210a is not limited.

As shown in fig. 3 and 4, the liquid injection port 210a may be disposed at a proximal end of the joint 210 and is in communication with an opening 210d of the joint 210, and the opening 210d is used for plugging the endoscope 100; alternatively, the filling port 210a is formed in a side wall of the joint 210.

In the embodiment in which the liquid injection port 210a is disposed at the proximal end of the connector 210, since the liquid injection port 210a is communicated with the opening 210d, and in the case that the endoscope 100 is inserted into the soaking sheath 200, the surface of the handle 110 adjacent to the liquid injection port 210a is exposed through the opening 210d, so that an operator can intuitively see the position of the handle 110, and avoid dropping disinfection liquid on the surface of the handle 110 during the liquid injection operation, that is, the risk of misoperation is reduced.

As shown in fig. 3 to 6, in some embodiments of the present utility model, the joint 210 has a supporting position 212 provided on an inner surface thereof, and the supporting position 212 is used for supporting the handle 110 to perform stopping; the support position 212 comprises a support protrusion 212a, the support protrusion 212a is provided with a bearing surface 212a1, the surface of the handle 110 is provided with a matching protrusion 111a, and the support protrusion 212a is in surface contact fit with the matching protrusion 111a through the bearing surface 212a1 when the endoscope 100 is inserted into the soaking sheath 200; and/or, the support 212 includes an arcuate support 212b.

It will be appreciated that the mating protrusion 111a of the handle 110 may be a protruding structure of the sleeve 111 thereon, see in particular fig. 5.

In the embodiment where the support position 212 includes the support protrusion 212a, the support protrusion 212a is in surface contact fit with the mating protrusion 111a through the bearing surface 212a1, and the surface contact fit between the bearing surface 212a1 of the support protrusion 212a and the supported portion of the mating protrusion 111a is in surface contact fit, that is, adaptive fit is achieved, so that the contact area between the joint 210 and the handle 110 for achieving support fit can be increased, thereby improving the stability of fit. Specifically, as shown in fig. 3 and 4, the bearing surface 212a1 is an arc surface, and of course, it may be a plane surface.

In embodiments where the support locations 212 include arcuate support portions 212b, the arcuate support portions 212b can both provide support for the handle 110 and provide for radial size reduction of the joint 210 through arcuate transition structures, thereby facilitating reduced risk of stress concentrations.

Of course, in the embodiment in which the support position 212 looks at both the support protrusions 212a and the arc-shaped support portions 212b, the support effect of the support position 212 can be enhanced. In the embodiment of the present utility model, the specific number of the supporting protrusions 212a and the arc-shaped supporting portions 212b is not limited, and as shown in fig. 6, two supporting protrusions are symmetrically arranged, but may be one, three or the like.

In some embodiments of the utility model, the joint 210 has at least one guard arm 213 provided on a proximal side thereof, at least a portion of the guard arm 213 being bent to form a hooking portion 213a, and/or at least a portion of the guard arm 213 being provided with a tag attachment site 213b along a radially outward surface of the joint 210. Specifically, as shown in fig. 3, 4 and 6, two guard arms 213 are provided on the proximal end side of the joint 210, one guard arm 213 is provided with a hanging portion 213a, and the other guard arm 213 is provided with a tag attachment position 213b.

It should be appreciated that guard arm 213 enables radial support of handle 110 of endoscope 100 on the proximal side of joint 210 to promote stability of the assembly of handle 110 with joint 210, avoiding deflection of endoscope 100 within soaking sheath 200.

Wherein, the hanging portion 213a is used as an attachment structure of the connector 210, and the soaking sheath 200 can be hung on a basic device, such as an operating table, a bed, etc., through the hanging portion 213a when in specific use, so as to facilitate placement; of course, the connector 210 of the present embodiment may also be provided with other types of attachment structures, such as a clamping portion, an adhesive portion, and the like.

The label attachment site 213b may be used to attach patient-related information labels, specifically, may be labels of the use of the endoscope 100, such as what type of endoscope 100 is used, the number of uses of the endoscope 100, etc., so as to avoid cross-infection of the use of the endoscope 100.

As shown in fig. 1, 2 and 5, in some embodiments of the present utility model, the distal end of the sheath 220 is provided with a drain port 221, the soaking sheath 200 further includes a sealing plug 230, the sealing plug 230 is insertable into the drain port 221, and the sealing plug 230 is detachably connected to the sheath 220.

It will be appreciated that in this arrangement, by removing the sealing plug 230, the disinfectant can be directly discharged through the liquid outlet 221, which obviously improves the convenience and efficiency of the liquid discharge operation, as compared to inverting the soaking sheath 200 and pouring the disinfectant from the side of the connector 210; particularly, in the case of sterilizing the endoscope 100 a plurality of times without taking out the endoscope, it is safer to discharge the sterilizing liquid from the liquid discharge port 221, and it is possible to prevent the endoscope 100 from falling down by pouring the soaking sheath 200.

The sealing plug 230 may be detachably connected by a clamping connection, a threaded fit, or the like.

And/or, in some embodiments of the utility model, the sheath 220 is a transparent tube. In this way, during the injection of the sterilizing fluid into the soaking sheath 200, the real-time injection of the sterilizing fluid can be observed through the transparent sheath tube 220, ensuring that the sterilizing fluid completely overflows the insertion portion 120, and avoiding the excessive injection of the sterilizing fluid.

Referring to fig. 1 to 6, some embodiments of the present utility model further provide an endoscope 100 assembly, including the endoscope 100 and the soaking sheath 200 according to any of the foregoing embodiments, so that the endoscope 100 assembly has the beneficial effects of the soaking sheath 200.

The endoscope 100 can be inserted into the soaking sheath 200, and the liquid injection groove 210b is disposed in the connector 210, so that the disinfectant injected from the liquid injection port 210a can flow to the connection channel 210c along the liquid injection groove 210b, and the liquid injection groove 210b provides an overflow space for the disinfectant, thereby improving the liquid injection efficiency and placing the disinfectant on the surface of the handle 110 of the endoscope 100.

The endoscope 100 according to the embodiment of the present utility model may be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a enteroscope, an otoscope, a nasoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc., and the embodiment of the present utility model does not specifically limit the type of the endoscope 100.

The foregoing embodiments of the present utility model mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in view of brevity of line text, no further description is provided herein.

The foregoing is merely exemplary of the present utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.

Claims (10)

1. An infusion sheath for an endoscope, the infusion sheath comprising a connector and a sheath tube, wherein:

the distal end of the connector is fixedly connected with the proximal end of the sheath tube and communicated with the proximal end of the sheath tube, the connector is used for accommodating at least part of a handle of the endoscope, and the sheath tube is used for accommodating an insertion part of the endoscope;

the connector is provided with a liquid injection port, a liquid injection groove and a connecting channel, the liquid injection groove is formed in the inner surface of the connector, the first end of the liquid injection groove is communicated with the liquid injection port, the second end of the liquid injection groove extends to the connecting channel, and the connector is communicated with the sheath tube through the connecting channel.

2. The soaking sheath of claim 1, wherein the adapter has a protrusion formed by bending a sidewall of the adapter and protruding radially outward to define the fluid infusion groove on one side of an inner surface of the protrusion.

3. The infusion sheath of claim 1, wherein the infusion slot comprises an open section disposed in correspondence of the infusion port; and/or the liquid injection groove comprises at least one necking section which is arranged along the axial direction of the joint, and the necking section is arranged corresponding to the position of the reduction of the size of one side of the far end of the handle.

4. The infusion sheath of claim 1, wherein the adapter has a support site on an inner surface thereof for supporting the handle to stop so that the distal end of the handle is spaced from the engagement channel.

5. The infusion sheath of claim 1, wherein the second end of the infusion channel is provided with a flow guiding surface that extends to the engagement channel.

6. The infusion sheath of any one of claims 1 to 5, wherein the infusion port is provided at a proximal end of the connector and communicates with an opening of the connector for insertion of the endoscope; or, the liquid injection port is arranged on the side wall of the joint.

7. The soaking sheath of any one of claims 1-5, wherein the adapter has a support location provided on an inner surface thereof for supporting the handle for stopping;

the support position comprises a support protrusion, the support protrusion is provided with a bearing surface, the surface of the handle is provided with a matching protrusion, and the support protrusion is in contact fit with the matching protrusion surface through the bearing surface under the condition that the endoscope is inserted into the soaking sheath; and/or, the support position comprises an arc-shaped support part.

8. The infusion sheath according to any one of claims 1 to 5, wherein the connector has at least one guard arm provided on a proximal side thereof, at least part of the guard arm being curved to form a catch, and/or at least part of the guard arm being provided with a label attachment site along a radially outward surface of the connector.

9. The soaking sheath of any one of claims 1-5, wherein a drain port is provided at a distal end of the sheath, the soaking sheath further comprising a sealing plug that is insertable into the drain port and that is detachably connected to the sheath; and/or the sheath tube is a transparent tube body.

10. An endoscope assembly comprising an endoscope and the soaking sheath of any one of claims 1 to 9, the endoscope being insertable within the soaking sheath.