CN214712495U - Water gas nozzle for endoscope and endoscope - Google Patents
Water gas nozzle for endoscope and endoscope Download PDFInfo
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- CN214712495U CN214712495U CN202022860223.9U CN202022860223U CN214712495U CN 214712495 U CN214712495 U CN 214712495U CN 202022860223 U CN202022860223 U CN 202022860223U CN 214712495 U CN214712495 U CN 214712495U
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Abstract
The utility model discloses an endoscope is with air nozzle and endoscope, this endoscope is with air nozzle includes: a nozzle body including a nozzle front end and a nozzle rear end; the reverse flow plug is movably embedded in the nozzle body; the front end of the nozzle is provided with a limiting part for preventing the backflow plug from separating from the nozzle body, and a preset gap is formed between the backflow plug and the front end of the nozzle when the backflow plug moves to the front end of the nozzle, so that water and air can be conveniently fed; the countercurrent plug is contacted with the rear end of the nozzle in a fitting manner when moving to the rear end of the nozzle so as to plug the nozzle body. The water-gas nozzle for the endoscope is additionally provided with the reverse flow plug in the nozzle body, and the reverse flow plug is respectively matched with the front end of the nozzle and the rear end of the nozzle in different modes, so that the water-gas nozzle for the endoscope can prevent liquid in the body from flowing back into a water gas pipe from the water-gas nozzle while feeding water and gas normally, namely, the water-gas nozzle for the endoscope has the performance of preventing reverse flow. The endoscope comprises the water-air nozzle for the endoscope, and has the beneficial effects.
Description
Technical Field
The utility model relates to the technical field of medical equipment, more specifically say, relate to a water gas nozzle for endoscope. In addition, the utility model discloses still relate to an endoscope including above-mentioned water gas nozzle for endoscope.
Background
The water-air nozzle of the medical endoscope is used as an outlet for supplying water and air, is aligned with the imaging lens of the endoscope, washes the imaging lens during water supply, and dries water drops on the imaging lens during air supply.
The water-air nozzle is connected with a water-air pipe, one end of the water-air pipe far away from the water-air nozzle is directly communicated to the operation part and is connected with the water-air cavity, and water is supplied to the water-air nozzle from the water-air cavity.
However, the water-air nozzle in the prior art has a backflow phenomenon in the use process, that is, because a certain pressure exists in the human body cavity, the liquid in the human body runs the risk of flowing back to the water-air cavity of the operation part along the water-air nozzle and the water-air pipe.
Therefore, it is an urgent need to solve the problem of providing an air nozzle for an endoscope capable of preventing a reverse flow.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention is directed to an air nozzle for endoscope, which has an anti-backflow function to prevent liquid in vivo from flowing back to the water-air cavity of the operation portion along the air nozzle and the water-air pipe.
Another object of the present invention is to provide an endoscope including the above-mentioned water-gas nozzle for endoscope, which can prevent the liquid in the body from flowing back to the water-gas cavity of the operation portion along the water-gas nozzle and the water-gas pipe.
In order to achieve the above object, the present invention provides the following technical solutions:
an endoscopic water gas nozzle comprising:
a nozzle body including a nozzle front end and a nozzle rear end;
the reverse flow plug is movably embedded in the nozzle body; the front end of the nozzle is provided with a limiting part for preventing the backflow plug from separating from the nozzle body, and a preset gap is formed between the backflow plug and the front end of the nozzle when the backflow plug moves to the front end of the nozzle, so that water and air can be conveniently fed; and the countercurrent plug is attached and contacted with the rear end of the nozzle when moving to the rear end of the nozzle so as to plug the nozzle body.
Preferably, the backflow plug is a spherical member.
Preferably, the rear end of the nozzle comprises a first inner circular section, the first inner circular section is circular, and the aperture of the first inner circular section is smaller than the diameter of the backflow plug.
Preferably, the rear end of the nozzle comprises a second inner circular section, the second inner circular section is circular, and the aperture of the second inner circular section is larger than the diameter of the backflow plug.
Preferably, the first inner circular cross section is in gradual transition to the second inner circular cross section.
Preferably, the front end of the nozzle comprises a third inner circle cross section, the third inner circle cross section is elliptical, the length of a short axis of the third inner circle cross section is smaller than the diameter of the backflow plug, and the length of a long axis of the third inner circle cross section is larger than the diameter of the backflow plug.
Preferably, the front end of the nozzle comprises a fourth inner circular cross section, the fourth inner circular cross section is elliptical, and the length of a short axis of the fourth inner circular cross section is greater than the diameter of the backflow plug.
Preferably, the front end of the nozzle comprises a fifth inner circular cross section, the fifth inner circular cross section is elliptical, the long axis and the short axis of the fifth inner circular cross section are both equal to those of the third inner circular cross section, and an elliptic cylinder hole with the equal long axis and the equal short axis is formed between the fifth inner circular cross section and the third inner circular cross section.
Preferably, the nozzle body and the reverse flow plug are made by 3D printing;
or the front end of the nozzle and the rear end of the nozzle are integrally processed and formed, and the countercurrent plug is forcibly plugged into the nozzle body and then reshaped to obtain the water-gas nozzle for the endoscope;
or the front end of the nozzle and the rear end of the nozzle are processed in a split mode, the backflow plug is plugged into one of the front end of the nozzle and the rear end of the nozzle, and the front end of the nozzle and the rear end of the nozzle are bonded or welded and fixed.
An endoscope comprises a water-air nozzle, wherein the water-air nozzle is any one of the water-air nozzles for the endoscope.
When the water-gas nozzle for the endoscope is used, when water or gas is fed to the water-gas nozzle through the water-gas pipe, the water flow or the gas flow pushes the counter-flow plug to move towards the front end of the nozzle, and the front end of the nozzle is provided with the limiting part, so that the counter-flow plug can be prevented from being separated from the nozzle body; when the countercurrent plug moves to the front end of the nozzle, because a preset gap is formed between the countercurrent plug and the front end of the nozzle, water flow or air flow can flow out of the gap between the countercurrent plug and the front end of the nozzle, so that the imaging lens can be washed or water drops on the imaging lens can be dried.
When the liquid in the body flows back along the water-gas nozzle under the pressure of the liquid in the body cavity of the human body, the countercurrent plug moves towards the rear end of the nozzle under the pressure, and when the countercurrent plug moves to the rear end of the nozzle, the countercurrent plug is in contact with the rear end of the nozzle, so that the nozzle body can be plugged, and the liquid in the body is prevented from flowing back into the water-gas cavity of the operation part from the water-gas nozzle and the water-gas pipe.
Therefore, the utility model provides a water gas nozzle for endoscope through at this internal counter current end cap of addding of nozzle to through making counter current end cap respectively with nozzle front end and nozzle rear end form different cooperation mode, reach when normally sending water to supply gas, can prevent that internal liquid from water gas nozzle refluences to in the water gas pipe, also promptly, this water gas nozzle for endoscope has the performance of preventing against the current.
The utility model provides an endoscope, including above-mentioned water gas nozzle for the endoscope, have above-mentioned beneficial effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural view of an endoscope water-gas nozzle according to an embodiment of the present invention;
FIG. 2 is a right side view of FIG. 1;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
FIG. 4 is a sectional view taken along line B-B of FIG. 2;
FIG. 5 is a schematic illustration of the location of each of the inner circle cross-sections of FIG. 3;
fig. 6 is a schematic diagram showing the dimensional relationship of the respective inner circle cross sections shown in fig. 5.
The reference numerals in fig. 1 to 6 are as follows:
1 is a nozzle body, 11 is a nozzle front end, 111 is a third inner circle cross section, 112 is a fourth inner circle cross section, 113 is a fifth inner circle cross section, 12 is a nozzle rear end, 121 is a first inner circle cross section, 122 is a second inner circle cross section, and 2 is a reverse flow plug.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The core of the utility model is to provide an endoscope is with water gas nozzle, has the effect of preventing against current to avoid internal liquid to flow against the current to operation portion aqueous vapor cavity along water gas nozzle and aqueous vapor pipe. The other core of the utility model is to provide an endoscope comprising the water-gas nozzle for the endoscope, which can prevent the liquid in the body from flowing back to the water-gas cavity of the operation part along the water-gas nozzle and the water-gas pipe.
Referring to fig. 1 to 6, fig. 1 is a schematic structural view of an air nozzle for an endoscope according to an embodiment of the present invention; FIG. 2 is a right side view of FIG. 1; FIG. 3 is a sectional view taken along line A-A of FIG. 2; FIG. 4 is a sectional view taken along line B-B of FIG. 2; FIG. 5 is a schematic illustration of the location of each of the inner circle cross-sections of FIG. 3; fig. 6 is a schematic diagram showing the dimensional relationship of the respective inner circle cross sections shown in fig. 5.
The utility model provides an air nozzle for endoscope, which mainly comprises a nozzle body 1 and a countercurrent plug 2.
Specifically, as shown in fig. 3, the nozzle body 1 includes a nozzle front end 11 and a nozzle rear end 12, the backflow plug 2 is movably embedded in the nozzle body 1, the nozzle front end 11 is provided with a limiting portion for preventing the backflow plug 2 from being separated from the nozzle body 1, and when the backflow plug 2 moves to the nozzle front end 11, a preset gap is formed between the backflow plug 2 and the nozzle front end 11, so as to facilitate water and air supply; the backflow plug 2 is in contact with the rear end 12 of the nozzle when moving to the rear end 12 of the nozzle, so as to plug the nozzle body 1.
When the backflow preventing nozzle is used, when water or air is fed to the water-air nozzle through the water-air pipe, the water flow or the air flow pushes the backflow preventing plug 2 to move towards the front end 11 of the nozzle, and the front end 11 of the nozzle is provided with the limiting part, so that the backflow preventing plug 2 can be prevented from being separated from the nozzle body 1; when the reverse flow plug 2 moves to the nozzle front end 11, because a preset gap is formed between the reverse flow plug 2 and the nozzle front end 11, water flow or air flow can flow out from the gap between the reverse flow plug 2 and the nozzle front end 11, so that the imaging lens can be washed or water drops on the imaging lens can be dried.
When the liquid in the body flows back along the water-gas nozzle under the pressure of the liquid in the body cavity of the human body, the countercurrent plug 2 moves towards the rear end 12 of the nozzle under the pressure, and when the countercurrent plug 2 moves to the rear end 12 of the nozzle, the countercurrent plug 2 is in contact with the rear end 12 of the nozzle, so that the nozzle body 1 can be plugged, and the liquid in the body is prevented from flowing back into the water-gas cavity of the operation part from the water-gas nozzle and the water-gas pipe.
Therefore, the utility model provides a water gas nozzle for endoscope through add the end cap 2 against the current in nozzle body 1 to through making the end cap 2 against the current respectively with nozzle front end 11 and nozzle rear end 12 formation different cooperation mode, reach when normally sending water to supply gas, can prevent that internal liquid from water gas nozzle refluence to the aqueous vapor trachea in, promptly, this water gas nozzle for endoscope has the performance of preventing against the current.
In the present embodiment, the specific shape of the reverse flow plug 2 is not limited, but as a preferable mode, the reverse flow plug 2 is a spherical member in addition to the above embodiments.
It will be appreciated that the ball is in point contact with the internal contour of the nozzle body 1, thereby reducing friction as the reverse flow plug 2 moves between the nozzle front end 11 and the nozzle rear end 12 and preventing the reverse flow plug 2 from becoming jammed within the nozzle body 1.
In order to make the nozzle rear end 12 better contact with the reverse flow plug 2, based on the above embodiment, the nozzle rear end 12 includes the first inner circular cross section 121, the first inner circular cross section 121 is circular, and the aperture of the first inner circular cross section 121 is smaller than the diameter of the reverse flow plug 2.
It can be understood that, when the backflow plug 2 is a spherical member, any cross section of the spherical member is circular, and therefore, in this embodiment, by providing the first circular cross section 121, the profile of the first circular cross section 121 can be in full contact with the backflow plug 2, so as to improve the backflow prevention effect of the backflow plug 2.
Further, in order to ensure that the backflow stopper 2 can be sufficiently contacted with the profile of the first inner circular cross section 121, on the basis of the above-described embodiment, the nozzle rear end 12 includes the second inner circular cross section 122, the second inner circular cross section 122 is circular, and the aperture of the second inner circular cross section 122 is larger than the diameter of the backflow stopper 2.
That is, when the reverse flow plug 2 moves toward the nozzle rear end 12, the reverse flow plug 2 first passes through the contour of the second inner circular cross section 122 and then moves to the contour of the first inner circular cross section 121 to contact the contour of the first inner circular cross section 121.
Further, the distance between the first inner circular cross section 121 and the second inner circular cross section 122 is not limited in this embodiment, and in order to make the backflow stopper 2 well contact with the contour of the first inner circular cross section 121, on the basis of the above embodiment, the first inner circular cross section 121 gradually transitions to the second inner circular cross section 122.
That is, the radial dimension of the cross section between the first inner circular cross section 121 and the second inner circular cross section 122 gradually increases from the size of the diameter of the first inner circular cross section 121 to the size of the diameter of the second inner circular cross section 122.
In addition, in order to make the nozzle tip 11 limit the backflow stopper 2 and make a predetermined gap exist between the nozzle tip 11 and the backflow stopper 2, based on the above embodiment, the nozzle tip 11 includes a third inner circular cross section 111, the third inner circular cross section 111 is an ellipse, a short axis length of the third inner circular cross section 111 is smaller than a diameter of the backflow stopper 2, and a long axis length of the third inner circular cross section 111 is larger than the diameter of the backflow stopper 2.
It can be understood that, since the length of the short axis of the third inner circular cross section 111 is smaller than the diameter of the backflow plug 2, when the backflow plug 2 moves to the profile of the third inner circular cross section 111, the profile of the third inner circular cross section 111 can prevent the backflow plug 2 from moving forward, so as to limit the backflow plug 2 and prevent the backflow plug 2 from separating from the nozzle body 1 from the nozzle front end 11.
Since the length of the long axis of the third inner circular cross section 111 is greater than the diameter of the reverse flow plug 2, when the reverse flow plug 2 moves to the contour of the third inner circular cross section 111, a certain gap is ensured between the reverse flow plug 2 and the contour of the third inner circular cross section 111, so that water or air can be ejected from between the reverse flow plug 2 and the contour of the third inner circular cross section 111.
Moreover, because of the shunting effect of the backflow plug 2, the fluid can be guided to disperse when being sprayed, so that the spraying range of water flow and air flow is wider, and the imaging lens of the endoscope can be better covered by water and air, and can be fully washed and dried.
Further, in order to enable the reverse flow plug 2 to better move to the contour of the third inner circular cross section 111, on the basis of the above embodiment, the nozzle tip 11 includes the fourth inner circular cross section 112, the fourth inner circular cross section 112 is an ellipse, and the length of the minor axis of the fourth inner circular cross section 112 is greater than the diameter of the reverse flow plug 2.
It will be appreciated that since the minor axis length of the fourth inner circular cross-section 112 is greater than the diameter of the reverse flow plug 2, the reverse flow plug 2 may pass within the profile of the fourth inner circular cross-section 112.
That is, when the reverse flow plug 2 moves toward the nozzle tip 11, the reverse flow plug 2 first passes through the contour of the fourth inner circular cross section 112, and then moves to the contour of the third inner circular cross section 111 and is caught at the contour of the third inner circular cross section 111.
It can be understood that the fourth inner circular cross section 112 is also oval in shape, and can drain the water vapor, so that the water vapor can more uniformly fill the gap between the backflow plug 2 and the contour of the third inner circular cross section 111.
In order to achieve a smooth transition of the fourth inner circular cross section 112 to the third inner circular cross section 111, it is preferred that the minor axis of the fourth inner circular cross section 112 transitions gradually to the minor axis of the third inner circular cross section 111.
That is, the length of the short axis gradually decreases from the fourth inner circular cross section 112 to the third inner circular cross section 111.
On the other hand, it is preferable that the long axis length of the fourth inner circular cross section 112 is equal to the long axis length of the third inner circular cross section 111.
In addition, if the nozzle rear end 12 includes the second inner circular cross-section 122, it is preferable that the length of the minor axis of the fourth inner circular cross-section 112 be equal to the diameter of the second inner circular cross-section 122.
It is further preferred that the second inner circular cross section 122 and the fourth inner circular cross section 112 form a cylindrical hole with a constant diameter therebetween for easy forming.
Further, in order to guide the water vapor jetting direction from the nozzle tip 11, on the basis of the above embodiment, the nozzle tip 11 includes a fifth inner circular cross section 113, the fifth inner circular cross section 113 is an ellipse, the major axis and the minor axis of the fifth inner circular cross section 113 and the third inner circular cross section 111 are equal, and an elliptic cylindrical hole with the equal major axis and the equal minor axis is formed between the fifth inner circular cross section 113 and the third inner circular cross section 111.
That is, as shown in fig. 5, the nozzle tip 11 has a section of an elliptic cylindrical hole, and the major axis and the minor axis of each cross section of the elliptic cylindrical hole are equal in size, so as to form a structure with a uniform shape, thereby facilitating the guiding of the water vapor.
It should be noted that, in the present embodiment, the distance between the fifth inner circular cross section 113 and the third inner circular cross section 111 is not specifically limited, and can be set by a person skilled in the art according to actual needs.
As shown in fig. 6, one dimensional relationship of the first inner circular cross-section 121, the second inner circular cross-section 122, the third inner circular cross-section 111, and the fourth inner circular cross-section 112 is given.
The broken line in fig. 6 is a reference line.
In addition, in the present embodiment, the specific processing method of the nozzle body 1 and the reverse flow plug 2 is not limited, and for example, the nozzle body 1 and the reverse flow plug 2 are preferably manufactured by 3D printing, that is, the nozzle body 1 and the reverse flow plug 2 are processed as an integral structure by 3D printing technology and are printed together.
Of course, it is also possible to obtain the water gas nozzle for endoscope by integrally forming the nozzle tip 11 and the nozzle tip 12, forcibly inserting the reverse flow plug 2 into the nozzle body 1, and then shaping the nozzle body 1.
Alternatively, the nozzle tip 11 and the nozzle rear end 12 may be separately formed, and the reverse flow plug 2 may be inserted into one of the nozzle tip 11 and the nozzle rear end 12, and then the nozzle tip 11 and the nozzle rear end 12 may be bonded or welded.
It should be noted that, when the nozzle tip 11 and the nozzle tip 12 are bonded or welded, it is necessary to ensure the bonding quality or the welding quality at the joint of the nozzle tip 11 and the nozzle tip 12 to ensure good airtightness.
In addition to the water-air nozzle, the present invention further provides an endoscope including the water-air nozzle disclosed in the above embodiments, and the structure of other parts of the endoscope is referred to the prior art, which is not described herein again.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The above detailed description of the air nozzle for endoscope and the endoscope provided by the present invention is provided. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. An endoscope water-air nozzle, comprising:
a nozzle body (1), the nozzle body (1) comprising a nozzle front end (11) and a nozzle rear end (12);
the backflow plug (2), the backflow plug (2) is movably embedded in the nozzle body (1); the front end (11) of the nozzle is provided with a limiting part for preventing the backflow plug (2) from separating from the nozzle body (1), and a preset gap is formed between the backflow plug (2) and the front end (11) of the nozzle when the backflow plug (2) moves to the front end (11) of the nozzle, so that water and air can be conveniently fed; and the countercurrent plug (2) is attached and contacted with the rear end (12) of the nozzle when moving to the rear end (12) of the nozzle so as to plug the nozzle body (1).
2. The water-gas nozzle for endoscope according to claim 1, characterized in that said reverse flow stopper (2) is a spherical member.
3. An endoscope water-gas nozzle according to claim 2, characterized in that the nozzle rear end (12) comprises a first inner circular section (121), the first inner circular section (121) being circular, the first inner circular section (121) having a smaller aperture than the diameter of the counter-flow stopper (2).
4. An endoscopic water gas nozzle as claimed in claim 3, characterized in that said nozzle rear end (12) comprises a second inner circular section (122), said second inner circular section (122) being circular, the aperture of said second inner circular section (122) being larger than the diameter of said counter flow plug (2).
5. An endoscopic air nozzle as claimed in claim 4, characterized in that said first inner circular section (121) is gradually transited to said second inner circular section (122).
6. The water gas nozzle for endoscope according to claim 1, characterized in that the nozzle tip (11) comprises a third inner circular cross section (111), the third inner circular cross section (111) is elliptical, the length of the minor axis of the third inner circular cross section (111) is smaller than the diameter of the reverse flow plug (2), and the length of the major axis of the third inner circular cross section (111) is larger than the diameter of the reverse flow plug (2).
7. An endoscopic water gas nozzle according to claim 6, wherein said nozzle tip (11) comprises a fourth inner circular section (112), said fourth inner circular section (112) being elliptical, the length of the minor axis of said fourth inner circular section (112) being greater than the diameter of said reverse flow plug (2).
8. The water gas nozzle for endoscope according to claim 6, characterized in that the nozzle front end (11) comprises a fifth inner circular cross section (113), the fifth inner circular cross section (113) is elliptical, the long axis and the short axis of the fifth inner circular cross section (113) and the third inner circular cross section (111) are equal, and an elliptical cylinder hole with equal long axis and equal short axis is formed between the fifth inner circular cross section (113) and the third inner circular cross section (111).
9. The water-air nozzle for endoscope according to any of claims 1 to 8, characterized in that said nozzle body (1) and said counter-flow plug (2) are made by 3D printing;
or the front end (11) and the rear end (12) of the nozzle are integrally processed and formed, and the backflow plug (2) is forcibly plugged into the nozzle body (1) to be reshaped to obtain the water-gas nozzle for the endoscope;
or the nozzle front end (11) and the nozzle rear end (12) are processed in a split mode, the backflow plug (2) is plugged into one of the nozzle front end (11) and the nozzle rear end (12), and the nozzle front end (11) and the nozzle rear end (12) are bonded or welded and fixed.
10. An endoscope comprising a water-air nozzle, wherein the water-air nozzle is the water-air nozzle for an endoscope according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022860223.9U CN214712495U (en) | 2020-12-01 | 2020-12-01 | Water gas nozzle for endoscope and endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022860223.9U CN214712495U (en) | 2020-12-01 | 2020-12-01 | Water gas nozzle for endoscope and endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214712495U true CN214712495U (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022860223.9U Active CN214712495U (en) | 2020-12-01 | 2020-12-01 | Water gas nozzle for endoscope and endoscope |
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| Country | Link |
|---|---|
| CN (1) | CN214712495U (en) |
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- 2020-12-01 CN CN202022860223.9U patent/CN214712495U/en active Active
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