Endoscope sheath

Abstract

The utility model provides an endoscope sheath which comprises an endoscope sheath assembly. The endoscope sheath assembly comprises a sheath tube, a valve body assembly arranged on the sheath tube in a sleeving mode and a fixing cap buckled to one end of the sheath tube. The fixing cap comprises a cap cylinder and a clamping block assembly. A through hole is formed in the side wall of the cap cylinder, and a mounting seat is arranged at the position, corresponding to the through hole, of the outer side wall; the clamping block assembly is installed in the installation base and comprises a fixing element fixed in the installation base, an elastic element with one end connected with the fixing element and a clamping and embedding element connected with the other end of the elastic element, and the end, away from the elastic element, of the clamping and embedding element can penetrate through the through hole to extend into an inner cavity of the cap barrel; a clamping groove matched with the clamping and embedding element is formed in the outer side wall of one end of the sheath tube, and the fixing cap is connected with the sheath tube in the mode that the clamping and embedding element is clamped into the clamping groove. The endoscope sheath is reasonable in structural design and convenient to assemble, and the number of spare and accessory parts is small.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to an endoscope sheath. Background Technology

[0002] An endoscope sheath is an auxiliary instrument used in endoscopic examinations. It primarily guides the endoscope or endoscopic instruments through natural or artificial body cavities into the body. The sheath connects to the endoscope via an endoscope connector cap at one end. Existing endoscope connector caps typically consist of a cap sleeve that fits over the sheath and a pin for locking the cap sleeve and sheath. This connection method requires first fitting the cap sleeve over one end of the sheath and then inserting the pin for locking, which is cumbersome. If the cap sleeve could be directly locked onto the sheath upon insertion, eliminating the need for a pin, the assembly process would be simplified, and the number of parts would be reduced. Utility Model Content

[0003] In view of this, in order to solve the above-mentioned technical problems, this utility model proposes an endoscope sheath with reasonable structural design, convenient assembly and few parts.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] An endoscope sheath includes a sheath assembly; the sheath assembly includes a sheath tube, a valve body assembly sleeved on the sheath tube, and a fixing cap fastened to one end of the sheath tube; the fixing cap includes a cap tube and a locking block assembly; the side wall of the cap tube has a through hole, and a mounting seat is provided at a position on the outer side wall of the cap tube corresponding to the through hole; the locking block assembly is installed in the cavity of the mounting seat, and the locking block assembly includes a fixing element fixed in the mounting seat, an elastic element connected to the fixing element at one end, and a locking element connected to the other end of the elastic element, the end of the locking element away from the elastic element can extend through the through hole into the inner cavity of the cap tube; a locking groove adapted to the locking element is provided on the outer side wall of one end of the sheath tube, and the fixing cap is connected to the sheath tube by the locking element being engaged in the locking groove.

[0006] The process of assembling the fixing cap onto the sheath is as follows: the cap is placed on the sheath. Due to the presence of the elastic element, the locking element is compressed by the outer wall of the sheath during the fitting process and remains in a closed state, which does not affect the installation process of the cap. When the cap is fitted to the designated position, the locking element moves to the corresponding position of the slot. Under the action of the elastic element, the locking element is engaged in the slot, thus completing the relative locking of the fixing cap and the sheath.

[0007] Furthermore, the valve body assembly includes a valve body, a valve seat disposed on the side of the valve body and communicating with the inner cavity of the valve body, and a water valve for a control switch mounted on the valve seat; the valve body is sleeved on the sheath tube, and the sheath tube is provided with a water inlet hole communicating with the inner cavity of the valve body and the inner cavity of the sheath tube.

[0008] The water valve is used to open and close. When open, the valve body is in a connected state, and the externally injected liquid can flow into the valve seat, then into the valve body, and finally into the sheath.

[0009] Furthermore, the upper and lower ends of the inner wall of the valve body are provided with annular fitting protrusions and annular fitting grooves, and the outer wall of the sheath tube is provided with annular fitting parts that are adapted to the annular fitting protrusions and annular fitting grooves, and annular sealing rings are provided at the fitting points.

[0010] The valve body and the sheath are connected by an interlocking mechanism, and an annular sealing ring is provided at the connection point. This ensures a seal and prevents the injected liquid from flowing out, while not affecting the relative rotation of the valve body and the sheath in the circumferential direction.

[0011] Furthermore, there are two valve seats, symmetrically arranged on both sides of the valve body, and each valve seat is equipped with a water valve.

[0012] Furthermore, the slot is an arc-shaped slot arranged circumferentially, and the starting and ending ends of the slot are provided with depth grooves that are deeper than the rest.

[0013] After the fixing cap is installed on the sheath, the locking element is inserted into the slot. Since the slot is an arc-shaped slot set along the circumference, the locking element can move along the slot in the circumference under the action of external force, but is restricted in the axial direction. This allows the fixing cap to rotate within a certain range in the circumference under the action of external force, while being limited in the axial direction, thus achieving relative locking with the sheath.

[0014] The starting and ending ends of the card slot are provided with depth grooves that are deeper than the rest of the slot. The depth of the depth grooves is slightly greater than the depth of the rest of the slot, which can fix the card-embedded element at the starting and ending ends without much external force.

[0015] Furthermore, the inner wall of the cap tube is provided with a locking protrusion; the outer wall of one end of the sheath tube is provided with a locking groove II that is adapted to the locking protrusion. One end of the locking groove II extends to the end of the sheath tube to form a sliding entrance. The locking protrusion enters the locking groove II through the sliding entrance and is locked in the locking groove II.

[0016] The protruding locking block slides into the second locking slot through the sliding inlet, and cooperates with the locking element to lock the fixing cap and the sheath.

[0017] Furthermore, it also includes an infusion pipeline; the infusion pipeline includes a main inlet pipe detachably connected at one end to the valve body assembly, and one or more inlet branch pipes connected at one end to the other end of the main inlet pipe; the other end of the inlet branch pipe is provided with a puncture component.

[0018] The infusion line is used to infuse liquid, and the puncture component is designed to puncture the liquid bag or bottle. The liquid flows into the valve body through the infusion line and finally into the sheath.

[0019] Furthermore, the inlet manifold is detachably connected to the valve body assembly via a Luer connector or threaded connection.

[0020] Compared with the prior art, the endoscope sheath of this utility model has the following advantages:

[0021] (1) The endoscope sheath structure of this utility model is reasonably designed and the fixing cap is easy to install. The locking block component can be locked by simply putting the cap tube on the sheath tube, which improves the assembly efficiency and reduces the number of parts.

[0022] (2) The endoscope sheath structure of this utility model is reasonably designed, with an irrigation pipeline for rinsing during the operation, and the connection between the valve body and the sheath can rotate freely without leakage, thus improving the convenience of operation. Attached Figure Description

[0023] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0024] Figure 1 This is a schematic diagram of the endoscope sheath described in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the sheath assembly described in an embodiment of the present invention;

[0026] Figure 3 This is an exploded structural diagram of the mirror sheath assembly described in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of the sheath assembly described in an embodiment of the present invention;

[0028] Figure 5 This is an exploded structural diagram of the fixing cap described in an embodiment of the present utility model;

[0029] Figure 6 This is a schematic diagram of the internal structure of the fixing cap described in an embodiment of the present utility model;

[0030] Figure 7 This is an exploded structural diagram of the fixing cap and sheath tube according to an embodiment of the present utility model;

[0031] Figure 8 This is an exploded structural diagram of the fixing cap and sheath tube from another angle according to an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the injection pipeline described in an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1-Sheath assembly, 2-Infusion line, 3-Sheath tube, 4-Valve body assembly, 5-Fixing cap, 6-Valve body, 7-Valve seat, 8-Water valve, 9-Annular fitting protrusion, 10-Annular fitting groove, 11-Annular fitting part, 12-Annular sealing ring, 13-Water inlet, 14-Cap sleeve, 15-Clamping block assembly, 16-Mounting base, 17-Clamping block protrusion, 18-Fixing element, 19-Elastic element, 20-Clamping element, 21-Clamping groove, 22-Depth groove, 23-Clamping groove two, 24-Sliding inlet, 25-Main inlet pipe, 26-Branch inlet pipe, 27-Punch assembly. Detailed Implementation

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0036] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] like Figure 1 As shown, an endoscope sheath includes a sheath assembly 1 and an irrigation line 2;

[0040] like Figures 2 to 8 As shown, the sheath assembly 1 includes a sheath tube 3, a valve body assembly 4 sleeved on the sheath tube 3, and a fixing cap 5 fastened to one end of the sheath tube 3; the valve body assembly 4 includes a valve body 6, a valve seat 7 communicating with the inner cavity of the valve body 6, and a water valve 8 for a control switch mounted on the valve seat 7; there are two valve seats 7, symmetrically arranged on both sides of the valve body 6, and a water valve 8 is installed on each valve seat 7; the upper and lower ends of the inner sidewall of the valve body 7 are provided with annular fitting protrusions 9 and annular fitting grooves 10, and the outer sidewall of the sheath tube 3 is provided with An annular fitting portion 11, corresponding to the annular fitting protrusion 9 and the annular fitting groove 10, is provided. The valve body 6 is sleeved on the sheath tube 3, and an annular sealing ring 12 is provided at the fitting point between the two. The sheath tube 3 is provided with a water inlet hole 13 connecting the inner cavity of the valve body 6 and the inner cavity of the sheath tube 3. The fixing cap 5 includes a cap cylinder 14 and a locking block assembly 15. The side wall of the cap cylinder 14 is provided with a through hole, and a mounting seat 16 is provided at the position corresponding to the through hole on the outer side wall of the cap cylinder 14. A locking block protrusion 17 is provided on the inner side wall of the cap cylinder 14. The locking block assembly The sheath tube 3 is installed in the cavity of the mounting base 16. The locking block assembly 15 includes a fixing element 18 fixed in the mounting base 16, an elastic element 19 connected to the fixing element 18 at one end, and a locking element 20 connected to the other end of the elastic element 19. The end of the locking element 20 away from the elastic element 19 can extend into the inner cavity of the cap tube 14 through the through hole. A locking groove 21 adapted to the locking element 20 is provided on the outer wall of one end of the sheath tube 3. The locking groove 21 is an arc-shaped locking groove arranged circumferentially. The starting and ending ends of the slot 21 are provided with a depth groove 22 that is deeper than the rest; the outer side wall of one end of the sheath tube 3 is provided with a second slot 23 that is adapted to the locking block protrusion 17. One end of the second slot 23 extends to the end of the sheath tube 3 to form a sliding entrance 24. The locking block protrusion 17 enters the second slot 23 through the sliding entrance 24 and is locked in the second slot 23; the fixing cap 5 is locked to the sheath tube 3 by the locking element 20 being inserted into the slot 21 and the locking block protrusion 17 being locked in the second slot 23.

[0041] The infusion line 2 includes a main inlet pipe 25 that is detachably connected to the valve seat 7 via a Luer connector at one end, and one or more inlet branch pipes 26 that are connected to the other end of the main inlet pipe 25 at one end; the other end of the inlet branch pipe 26 is provided with a puncture assembly 27.

[0042] The installation process of the endoscope sheath described in this utility model is as follows:

[0043] Place the cap 14 onto the sheath 3, align the locking protrusion 17 with the sliding entrance 24, press down and rotate the cap 14 to allow the locking protrusion 17 to enter the slot 23 from the sliding entrance 24. At the same time, the locking element 20 moves to the corresponding position in the slot 21. Under the action of the elastic element 19, the locking element 20 is locked into the slot 21, thus completing the relative locking of the cap 5 and the sheath 3.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An endoscope sheath, characterized by: The application relates to a mirror sheath assembly, which comprises a sheath tube, a valve body assembly arranged on the sheath tube and a fixing cap buckled on one end of the sheath tube; the fixing cap comprises a cap barrel and a clamping block assembly; a through hole is arranged on the side wall of the cap barrel, and a mounting seat is arranged on the outer side wall of the cap barrel at a position corresponding to the through hole; the clamping block assembly is mounted in the cavity of the mounting seat and comprises a fixing element fixed in the mounting seat, an elastic element connected with one end of the fixing element and a clamping element connected with the other end of the elastic element; one end of the clamping element away from the elastic element can extend into the inner cavity of the cap barrel through the through hole; a clamping groove corresponding to the clamping element is arranged on the outer side wall of one end of the sheath tube, and the fixing cap is connected with the sheath tube in a mode that the clamping element is clamped into the clamping groove.

2. The endoscope sheath of claim 1, wherein: The valve body assembly comprises a valve body, valve seats arranged on the side of the valve body and communicating with the inner cavity of the valve body, and water valves mounted on the valve seats; the valve body is arranged on the sheath tube, and a water inlet hole communicating the inner cavity of the valve body with the inner cavity of the sheath tube is arranged on the sheath tube.

3. The endoscope sheath of claim 2, wherein: Annular clamping protrusions and annular clamping grooves are arranged on the upper and lower ends of the inner side wall of the valve body, and an annular clamping part corresponding to the annular clamping protrusions and the annular clamping grooves is arranged on the outer side wall of the sheath tube, and a ring-shaped sealing ring is arranged at the clamping position.

4. The endoscope sheath of claim 2, wherein: The valve seats are two and symmetrically arranged on the two sides of the valve body, and the water valves are mounted on each valve seat.

5. The endoscopic sheath of claim 1, wherein: The clamping groove is an arc-shaped clamping groove arranged in the circumferential direction, and the starting end and the ending end of the clamping groove are provided with depth grooves with a depth greater than that of the remaining part.

6. The endoscopic sheath of claim 1, wherein: A clamping block protrusion is arranged on the inner side wall of the cap barrel; a clamping groove two corresponding to the clamping block protrusion is arranged on the outer side wall of one end of the sheath tube, one end of the clamping groove two extends to the end of the sheath tube to form a sliding inlet, the clamping block protrusion enters the clamping groove two through the sliding inlet and is clamped in the clamping groove two.

7. The endoscope sheath of any one of claims 1 to 6, wherein: The application further relates to a perfusion pipeline, which comprises a liquid inlet main pipe detachably connected with the valve body assembly and one or more liquid inlet branch pipes connected with the other end of the liquid inlet main pipe; the other end of the liquid inlet branch pipe is provided with a puncture assembly.

8. The endoscope sheath of claim 7, wherein: The liquid inlet main pipe is detachably connected with the valve body assembly in a mode of luer joint or threaded connection.

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