Waterproof cap for endoscope

Abstract

The utility model discloses a waterproof cap for an endoscope. The waterproof cap comprises a cap opening, a cap body and a cap tail, the inlet section, the opening and the connecting cavity which are through are formed in the cap body, by improving the structure of the inlet section or the structure of the cap opening, the supporting performance of a catheter or the deformation capacity of the catheter is improved, then the breaking risk of the catheter at the position of the waterproof cap is reduced, and the safety of an operation is improved.

Description

Technical Field

[0001] The utility model relates to a waterproof cap for an endoscope, in particular to an endoscope waterproof cap which can prevent a catheter from breaking. Background Art

[0002] As a commonly used medical device in the medical field, catheters are used in conjunction with endoscopic instruments such as cystoscopes and ureteroscopes to perform corresponding surgeries according to actual symptoms. However, due to the different outer diameters of catheters, there will be gaps when they are matched with the instrument channel. In order to prevent the body fluid from flowing out through the gap, a silicone rubber waterproof cap is usually set at the end of the endoscopic instrument channel; and the catheter is passed through the opening at the end of the waterproof cap to enter the endoscopic instrument channel, and the elasticity of the silicone rubber material of the waterproof cap cooperates with the catheter to prevent leakage.

[0003] However, the structure of the existing waterproof cap can easily cause the catheter to break when the doctor's movements are too large or the operating posture is improper, thus affecting the operation and even causing complications. Utility Model Content

[0004] In view of this, the utility model proposes a waterproof cap for an endoscope based on the above defects to solve the problem of how to prevent the catheter from breaking. To this end, the technical solution adopted is:

[0005] A waterproof cap for an endoscope comprises: a cap opening, a cap body and a cap tail; the cap body is provided with a through inlet section, an opening and a connecting cavity; the radius of the inlet section gradually decreases from the cap opening to the cap tail, and the slope of the inlet section cross section decreases from the cap opening to the cap tail; the cap opening is connected to the inlet section; the inlet section is connected to the connecting cavity through the opening.

[0006] Preferably, the cap opening and the inlet section are smoothly connected; the beneficial effect is that the catheter can be easily inserted and the catheter can be prevented from being broken during the insertion process.

[0007] Preferably, the aperture at the minimum diameter of the inlet section is smaller than the aperture at the opening; the beneficial effect is that: while having better waterproof performance, the supporting position of the catheter is transformed from the opening to the inlet section, that is, the small area point / line contact is transformed into the surface contact on the inlet section, thereby improving the support for the catheter and reducing the risk of breakage.

[0008] Preferably, the aperture of the connecting cavity is larger than the aperture of the opening; its beneficial effect is that when the catheter passes through the opening, the step formed at the connection between the opening and the connecting cavity due to the change in aperture will enhance the sealing of the waterproof cap and prevent the liquid from flowing back through the connecting cavity.

[0009] Preferably, the outer peripheral wall of the cap body is a variable diameter structure along the direction from the cap opening to the cap tail; the beneficial effect thereof is that it is easy to pinch and grasp while improving the convenience of installation / disassembly for the operator.

[0010] Preferably, the waterproof cap for the endoscope is made in one piece;

[0011] As another embodiment, a waterproof cap for an endoscope includes: a cap opening, a cap body, and a cap tail; the cap body is provided with a through hole, an inlet section, an opening, and a connecting cavity; the inlet section is arranged between the through hole and the opening, and the cross section of the inlet section is an outward convex arc; the cap opening is connected to the inlet section; the inlet section is connected to the connecting cavity through the opening. Through this technical solution, the material thickness of the cap body in the local area of ​​the inlet section is reduced, so that when the catheter is inclined or bent, the inlet section is deformed to reduce the risk of the catheter being broken.

[0012] As another embodiment, a waterproof cap for an endoscope includes: a cap opening, a cap body, and a cap tail; the cap body is provided with a through inlet section, an opening, and a connecting cavity; the inlet section is a cavity structure; the cap opening is provided with a flap-shaped opening and is connected to the inlet section; the inlet section is connected to the connecting cavity through the opening. Its beneficial effect is that when the catheter is bent, since the flap-shaped opening structure is more easily deformed, when the catheter is bent, part of the bending force on the catheter is reduced by the deformation of the flap-shaped opening to prevent the catheter from breaking.

[0013] Preferably, at least the flap of the cap opening is made of elastic material; its beneficial effect is that when the catheter passes through the flap, the flap and the catheter wall are kept in close contact and the sealing is maintained.

[0014] Preferably, the petal-shaped opening of the cap opening is composed of at least two petals;

[0015] Preferably, when the catheter enters through the petal-shaped opening of the cap, the petal deforms toward the direction close to the entrance section; when the catheter is pulled out through the petal-shaped opening of the cap, the petal deforms toward the direction away from the entrance section; the beneficial effect is that when the catheter enters and exits, the frictional resistance is reduced by the deformation of the petal, making it easier to enter and exit.

[0016] Preferably, the cap body corresponding to the inlet section is made of elastic material; its beneficial effect is that when the catheter is subjected to a large bending force, the bending deformation of the catheter is reduced by means of the deformation of the valve-shaped opening and / or the cap body, thereby preventing the catheter from breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the installation of a waterproof cap for an endoscope.

[0018] Figure 2 It is a partial enlarged view of a waterproof cap for an endoscope of the utility model in an installed state.

[0019] Figure 3 It is a structural schematic diagram of a first embodiment of a waterproof cap for an endoscope of the utility model.

[0020] Figure 4 It is a cross-sectional schematic diagram of a first embodiment of a waterproof cap for an endoscope of the utility model.

[0021] Figure 5 It is a cross-sectional schematic diagram of a second embodiment of a waterproof cap for an endoscope of the utility model.

[0022] Figure 6 It is a structural schematic diagram of a third embodiment of a waterproof cap for an endoscope of the utility model.

[0023] Figure 7 It is a schematic diagram of a flap-shaped opening of a third embodiment of a waterproof cap for an endoscope of the utility model.

[0024] Figure 8 It is a schematic diagram of a third embodiment of a waterproof cap for an endoscope of the utility model, when the flaps of the flap-shaped opening are deformed in a direction away from the inlet section.

[0025] Fig. 9 It is a cross-sectional schematic diagram of a third embodiment of a waterproof cap for an endoscope of the utility model, when the flaps of the flap-shaped opening are deformed in a direction away from the inlet section.

[0026] Fig.10 It is a schematic diagram of a third embodiment of a waterproof cap for an endoscope according to the utility model, when the flaps of the flap-shaped opening are deformed toward the direction close to the inlet section.

[0027] Fig.11 It is a cross-sectional schematic diagram of a third embodiment of a waterproof cap for an endoscope of the utility model, when the flaps of the flap-shaped opening are deformed toward the direction close to the inlet section.

[0028] In the attached drawings: 1. endoscope; 2. endoscope instrument channel; 3. waterproof cap; 4. cap opening; 5. cap body; 6. cap tail; 7. through hole; 8. inlet section; 9. opening; 10. connecting cavity; 11. petal-shaped opening. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the various embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See attached Figure 1-2 The endoscope 1 has an endoscope instrument channel 2 for the entrance of the medical instrument, and the waterproof cap 3 is installed at the entrance of the endoscope instrument channel 2 to prevent leakage. However, when the doctor's movements are too large or the operation posture is improper, the catheter is easily broken at the end of the waterproof cap 3, which is not conducive to the operation. The utility model improves the structure of the waterproof cap 3 to solve this technical problem. The specific embodiments are as follows:

[0031] First embodiment:

[0032] See also Figure 3-4 As shown, a waterproof cap 3 for an endoscope of the present invention is shown, comprising a cap opening 4, a cap body 5 and a cap tail 6; the cap body 5 is provided with a through inlet section 8, an opening 9 and a connecting cavity 10; the waterproof cap 3 is detachably connected to the endoscope instrument channel 2 through the connecting cavity 10. When performing a corresponding operation, the catheter enters through the cap opening 4 of the waterproof cap 3, penetrates the waterproof cap 3 and enters the body through the endoscope instrument channel 2. For details, see the attached Figure 2 The radius of the inlet section 8 of the endoscope waterproof cap 3 gradually decreases from the cap opening to the cap tail, and the slope of the cross section of the inlet section 8 decreases from the cap opening 4 to the cap tail 6. By setting the cross-sectional slope of the inlet section 4, on the one hand, the catheter will have smaller friction resistance when it is inserted, making the catheter less likely to bend; on the other hand, after the catheter is inserted into place, when the catheter is rotated or even swung, the contact area between the catheter and the inlet section 4 becomes larger, which improves the support for the catheter and reduces the risk of catheter breakage.

[0033] Furthermore, the cap opening 4 and the inlet section 8 are smoothly connected to facilitate the insertion of the catheter and prevent the catheter from being broken during the insertion process.

[0034] Furthermore, the aperture of the inlet section 8 at the minimum diameter is smaller than the aperture of the opening 9; its purpose is to ensure that the waterproof cap 3 has better waterproofness while changing the supporting position of the catheter from the opening 9 to the inlet section 8, that is, changing the small area point / line contact to the surface contact on the inlet section 8, thereby improving the support for the catheter and reducing the risk of breakage.

[0035] Furthermore, the aperture of the connecting cavity 10 is larger than the aperture of the opening 9; its purpose is that when the catheter passes through the opening 9, the step formed at the connection between the opening 9 and the connecting cavity 10 due to the change in aperture will enhance the sealing of the waterproof cap and prevent the liquid from flowing back through the connecting cavity 10.

[0036] Furthermore, the outer peripheral wall surface of the cap body 5 is a variable diameter structure along the direction from the cap opening 4 to the cap tail 6; the purpose is to facilitate pinching and gripping while improving the convenience of installation / disassembly for the operator.

[0037] Furthermore, the waterproof cap 3 for the endoscope is made in one piece;

[0038] Second embodiment:

[0039] See attached Figure 5 As shown, as another embodiment, the waterproof cap 3 for endoscope comprises: a cap opening 4, a cap body 5 and a cap tail 6; the cap body 5 is provided with a through hole 7, an inlet section 8, an opening 9 and a connecting cavity 10; the inlet section 8 is arranged between the through hole 7 and the opening 9, and the cross section of the inlet section 8 is an outward convex arc; the through hole 7 is connected to the inlet section 8; the inlet section 8 is connected to the connecting cavity 10 through the opening 9. In this embodiment, the material thickness of the cap body 5 in the local area of ​​the inlet section 8 is reduced, so that when the catheter is inclined or bent, the inlet section 8 is deformed first, thereby reducing the risk of the catheter being broken.

[0040] Furthermore, the inlet section 8 and the opening 9 are smoothly connected to facilitate the insertion of the catheter and prevent the catheter from being broken during the insertion process.

[0041] Furthermore, the aperture of the connecting cavity 10 is larger than the aperture of the opening 9; its purpose is that when the catheter passes through the opening 9, the step formed at the connection between the opening 9 and the connecting cavity 10 due to the change in aperture will enhance the sealing of the waterproof cap and prevent the liquid from flowing back through the connecting cavity 10.

[0042] Furthermore, the outer peripheral wall surface of the cap body 5 is a variable diameter structure along the direction from the cap opening 4 to the cap tail 6; the purpose is to facilitate pinching and gripping while improving the convenience of installation / disassembly for the operator.

[0043] Furthermore, the waterproof cap 3 for the endoscope is made in one piece;

[0044] Third embodiment:

[0045] See attached Figure 6-11As another embodiment, the waterproof cap 3 for endoscope comprises: a cap opening 4, a cap body 5 and a cap tail 6; the cap body 5 is provided with a through inlet section 8, an opening 9 and a connecting cavity 10; the inlet section 8 is a cavity structure; the cap opening 5 is provided with a flap 11 and connected to the inlet section 8; the inlet section 8 is connected to the connecting cavity 10 through the opening 9. When the catheter is bent, since the flap 11 structure is more easily deformed, when the catheter is bent, part of the bending force on the catheter is reduced by the deformation of the flap 11 to prevent the catheter from breaking.

[0046] Furthermore, at least part of the petal-shaped opening 11 of the cap opening 4 is made of elastic material; its beneficial effect is that when the catheter passes through the petal-shaped opening 11, the petal-shaped opening 11 and the catheter wall are kept in close contact and sealed.

[0047] Furthermore, the petal-shaped opening 11 of the cap opening is composed of at least two petals;

[0048] For further information, see Appendix Figure 8-11 When the catheter is pulled out through the petal-shaped opening of the cap opening 4, the petals of the petal-shaped opening 11 are deformed in the direction away from the inlet section 4; when the catheter enters through the petal-shaped opening 11 of the cap opening 4, the petals of the petal-shaped opening 11 are deformed in the direction close to the inlet section 8; the beneficial effect is that when the catheter enters and exits, the friction resistance is reduced by the deformation of the petals of the petal-shaped opening 11, making it easier to enter and exit.

[0049] Furthermore, the cap body 5 corresponding to the enclosed inlet section 8 is made of elastic material; its beneficial effect is that when the catheter is subjected to a large bending force, the bending deformation of the catheter is reduced by means of the deformation of the valve-shaped opening 11 and / or the cap body 5, thereby preventing the catheter from breaking.

[0050] In addition, it should be particularly pointed out that the features in the above-mentioned embodiments can be combined with each other to form more embodiments without contradiction.

[0051] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A waterproof cap for an endoscope, comprising: The cap mouth, the cap body and the cap tail are characterized in that the cap body is provided with a through inlet section, an opening and a connecting cavity; The radius of the inlet section gradually decreases along the direction from the cap opening to the cap tail, and the slope of the cross section of the inlet section gradually decreases along the direction from the cap opening to the cap tail; The cap opening is connected to the inlet section, and the inlet section is connected to the connecting cavity through the opening.

2. A waterproof cap for an endoscope according to claim 1, characterized in that: The cap opening and the inlet section are smoothly connected.

3. The waterproof cap for an endoscope according to claim 1, characterized in that: The aperture of the inlet section at the minimum diameter is smaller than the aperture of the opening.

4. The waterproof cap for an endoscope according to claim 1, characterized in that: The connection cavity aperture is larger than the opening aperture.

5. The waterproof cap for an endoscope according to claim 1, characterized in that: The cap body is provided with a through hole, an inlet section, an opening and a connecting cavity; the inlet section is arranged between the through hole and the opening, and the cross section of the inlet section is an outwardly convex arc; the cap opening is connected to the inlet section; the inlet section is connected to the connecting cavity through the opening.

6. A waterproof cap for an endoscope, comprising: A cap mouth, a cap body and a cap tail; characterized in that the cap body is provided with a through inlet section, an opening and a connecting cavity; the inlet section is a cavity structure; the cap mouth is provided with a petal-shaped opening and is connected to the inlet section; the inlet section is connected to the connecting cavity through the opening.

7. A waterproof cap for an endoscope according to claim 6, characterized in that: At least the petal-shaped opening of the cap opening is made of elastic material.

8. The waterproof cap for an endoscope according to claim 7, characterized in that: The petal-shaped opening of the cap opening is composed of at least two petals.

9. The waterproof cap for an endoscope according to claim 8, characterized in that: When the catheter enters through the petal-shaped opening of the cap opening, the petal deforms toward the direction close to the inlet section; when the catheter is pulled out through the petal-shaped opening of the cap opening, the petal deforms toward the direction away from the inlet section.

10. The waterproof cap for an endoscope according to claim 6, characterized in that: The cap body corresponding to the inlet section is made of elastic material.

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