CN220876718U - Negative pressure suction chamber, handle and endoscope - Google Patents

Abstract

The utility model discloses a negative pressure suction chamber, a handle and an endoscope, and relates to the field of medical instruments. The negative pressure suction chamber comprises a chamber main body, a first connecting channel, a second connecting channel and a third connecting channel, wherein the first connecting channel, the second connecting channel and the third connecting channel are communicated with the chamber main body, the first connecting channel and the second connecting channel are communicated with an instrument tube channel of the endoscope, the third connecting channel is communicated with a negative pressure suction device, the chamber main body is arranged along the axial direction of the handle of the endoscope, the inner diameter of the first connecting channel and the inner diameter of the second connecting channel are larger than or equal to the inner diameter of the instrument tube channel, and the inner diameter of the chamber main body is larger than the inner diameter of the first connecting channel, the inner diameter of the second connecting channel and the inner diameter of the third connecting channel. The negative pressure suction cavity has a larger accommodating space, and when liquid or foreign matters are sucked, the pressure in the cavity main body can be kept stable, so that the liquid or the foreign matters in the cavity main body can smoothly enter the cavity main body, and meanwhile, the flow of negative pressure suction can be kept stable, and the negative pressure suction effect is ensured.

Description

Negative pressure suction chamber, handle and endoscope

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a negative pressure suction cavity, a handle and an endoscope.

Background

Endoscopes are a commonly used medical instrument that can directly access the natural lumen of the human body for examination, providing the physician with adequate diagnostic information. Endoscopes generally include: an insertion part for being inserted into the human body, a handle for controlling the front end of the insertion part to be bent, and a display device for displaying the internal environment of the natural cavity of the human body; the endoscope can realize peeping and focus exploration and treatment of the interior of a human body through the matching of the three parts.

The insertion part and the handle are internally provided with an instrument tube channel which is used for passing a treatment instrument, injecting liquid into a human body and sucking out liquid or foreign matters (such as broken stone) in the human body. Specifically, the negative pressure suction device is directly communicated with the instrument tube channel, or the negative pressure suction device is communicated with a negative pressure suction cavity connected to the instrument tube channel, and then the negative pressure suction device is used for keeping the negative pressure in the instrument tube channel or the negative pressure suction cavity, so that the liquid or the foreign matters are guided into the proximal end of the instrument tube channel or the negative pressure suction cavity to be sucked out.

However, the inventors found that: the negative pressure suction device is in a structure communicated with the negative pressure suction cavity, the inner diameter of the negative pressure suction cavity is smaller, so that the formed negative pressure cavity is smaller, when the negative pressure suction of foreign matters is carried out, not only can liquid or foreign matters which can be contained in the negative pressure suction cavity be fewer, but also the liquid or foreign matters which enter the negative pressure suction cavity can cause larger influence on the pressure in the negative pressure suction cavity, and meanwhile, the liquid or foreign matters which are sucked outwards can also cause larger influence on the pressure in the negative pressure suction cavity, so that the pressure fluctuation in the negative pressure suction cavity is larger, the liquid or foreign matters in the body cannot smoothly enter the negative pressure suction cavity, and meanwhile, the flow fluctuation of the negative pressure suction is also larger, so that the negative pressure suction effect is influenced. Similarly, the negative pressure suction device is directly communicated with the instrument tube channel, so that the problems that liquid or foreign matters which can be contained at the proximal end of the instrument tube channel are fewer, the pressure fluctuation at the proximal end of the instrument tube channel is larger, the liquid or foreign matters in the body cannot smoothly enter the proximal end of the instrument tube channel, and meanwhile, the fluctuation of the flow of negative pressure suction is larger, and the negative pressure suction effect is influenced still exist.

Therefore, providing a negative pressure suction chamber with stable pressure is a technical problem to be solved by those skilled in the art.

Disclosure of utility model

The utility model discloses a negative pressure suction cavity, a handle and an endoscope, which are used for solving the technical problems that the proximal end of a negative pressure suction cavity or an instrument tube channel in the related art can contain less liquid or foreign matters and the pressure fluctuation in the proximal end of the negative pressure suction cavity or the instrument tube channel is larger.

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

A first aspect of the utility model provides a negative pressure suction chamber.

The negative pressure suction chamber comprises a chamber main body, a first connecting channel, a second connecting channel and a third connecting channel, wherein the first connecting channel, the second connecting channel and the third connecting channel are communicated with the chamber main body, the first connecting channel and the second connecting channel are also communicated with an instrument tube channel of an endoscope, the third connecting channel is also communicated with a negative pressure suction device, the chamber main body is arranged along the axial direction of an endoscope handle, the inner diameter of the first connecting channel and the inner diameter of the second connecting channel are larger than or equal to the inner diameter of the instrument tube channel, and the inner diameter of the chamber main body is larger than the inner diameter of the first connecting channel, the inner diameter of the second connecting channel and the inner diameter of the third connecting channel.

Further, the first connecting channel and the second connecting channel are located at two ends of the axial direction of the chamber main body, and the third connecting channel is located at the side face of the chamber main body.

Further, the surface of the third connecting channel, which is close to the traction rope side of the endoscope, is lower than the surface of the chamber main body, and a gap is formed between the third connecting channel and the traction rope.

Further, the chamber body includes a first body portion and a second body portion, and the first body portion and the second body portion are of a split type structure.

Further, the first connecting channel is located at the distal end of the first main body part, and the first connecting channel and the first main body part are of a unitary structure; the second connecting channel is positioned at the proximal end of the second main body part, and the second connecting channel and the second main body part are of an integrated structure; the third connecting channel is positioned on the side surface of the first main body part or the second main body part, and the third connecting channel and the first main body part or the second main body part are of an integrated structure.

Further, the distal end of the first connecting channel and the proximal end of the second connecting channel are both tapered structures, and the distal end of the first body portion and the proximal end of the second body portion are both tapered structures.

Further, the negative pressure suction chamber further comprises a fixing piece, wherein the fixing piece is arranged on the chamber main body, and the fixing piece is clamped with the mounting seat for fixing the traction rope.

Further, the fixing piece comprises a first fixing piece and a second fixing piece, the first fixing piece and the second fixing piece are respectively located at two ends of the cavity main body, and the first fixing piece and the second fixing piece are of an integral structure with the cavity main body.

A second aspect of the utility model provides a handle.

The handle comprises a handle shell and a negative pressure suction cavity, wherein the negative pressure suction cavity is the negative pressure suction cavity according to any one of the technical schemes, and is positioned in the handle shell.

A third aspect of the utility model provides an endoscope.

The endoscope comprises a handle, an insertion part and display equipment, wherein the handle is the handle according to any one of the technical schemes, the handle is connected with the insertion part, and the handle is also connected with the display equipment.

The technical scheme adopted by the utility model at least can achieve the following beneficial effects:

The negative pressure suction chamber comprises a chamber main body, a first connecting channel, a second connecting channel and a third connecting channel, wherein the first connecting channel, the second connecting channel and the third connecting channel are communicated with the chamber main body, the first connecting channel and the second connecting channel are also communicated with an instrument tube channel of an endoscope, the third connecting channel is also communicated with a negative pressure suction device, when negative pressure suction is carried out, liquid or foreign matters in a body can be guided into the chamber main body to be sucked out through the negative pressure suction device, and the chamber main body can play a role of buffering the liquid or the foreign matters. Further, since the inner diameter of the first connecting channel and the inner diameter of the second connecting channel of the negative pressure suction chamber are larger than or equal to the inner diameter of the instrument tube channel, the inner diameter of the chamber main body is larger than the inner diameter of the first connecting channel, the inner diameter of the second connecting channel and the inner diameter of the third connecting channel, that is, the chamber main body is larger than the instrument tube channel, the first connecting channel, the second connecting channel and the third connecting channel, the chamber main body has larger size, so that larger accommodating space can be provided for accommodating more liquid or foreign matters, therefore, the liquid or foreign matters entering the chamber main body can not have larger influence on the pressure in the chamber main body, and meanwhile, the liquid or foreign matters sucked outwards can not have larger influence on the pressure in the chamber main body, so that the pressure in the chamber main body can be kept stable, the liquid or foreign matters in the chamber main body can smoothly enter the chamber main body, meanwhile, the flow of the negative pressure suction can be kept stable, and the negative pressure suction effect is ensured.

Further, since the chamber body is provided in the axial direction of the endoscope handle, the inner diameter and length of the chamber body can be increased as much as possible, so that the accommodation space of the chamber body can be made as large as possible. Specifically, the traditional endoscope is provided with an instrument nozzle at the side of a handle, a negative pressure suction port is arranged at the proximal end of the handle, the cavity main body is generally obliquely arranged, and instrument tube channels are also in nonlinear distribution, the cavity main body with larger inner diameter or length can influence the insertion of a treatment instrument and the input of treatment substances, while the cavity main body is axially arranged along the handle, so that the instrument nozzle is positioned at the proximal end of the handle, and the negative pressure suction port is positioned at the side of the handle.

The negative pressure suction cavity solves the technical problems that the near end of the negative pressure suction cavity or the instrument tube channel in the related art can contain less liquid or foreign matters and the pressure fluctuation in the near end of the negative pressure suction cavity or the instrument tube channel is larger.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a preferred embodiment of an endoscope of the present application;

FIG. 2 is an internal schematic view of an endoscope handle according to an embodiment of the present application;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a first schematic view of a preferred embodiment of a negative pressure suction chamber according to an embodiment of the present application;

FIG. 5 is a second schematic view of a preferred embodiment of a negative pressure suction chamber of the present application;

FIG. 6 is a first schematic view of a preferred implementation of the first body portion of the embodiment of the present application;

FIG. 7 is a second schematic view of a preferred implementation of the first body portion of the present embodiment;

FIG. 8 is a first schematic view of a preferred implementation of the second body portion of the present embodiment;

fig. 9 is a second schematic view of a preferred embodiment of the second body portion of the present application.

In the figure: 10. a negative pressure suction chamber; 11. a chamber body; 111. a first body portion; 112. a second body portion; 12. a first connection channel; 13. a second connection channel; 14. a third connecting channel; 141. a gap; 15. a fixing member; 151. a first fixing member; 152. a second fixing member; 20. an instrument tube channel; 30. a traction rope; 31. a mounting base; 40. a handle; 41. a handle housing; 50. an insertion portion.

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 described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The application is characterized in that: the structure that the negative pressure suction device of the existing endoscope is communicated with the negative pressure suction cavity has the advantages that the inner diameter of the negative pressure suction cavity is smaller, so that the formed negative pressure cavity is smaller, when the negative pressure suction of foreign matters is carried out, not only is the liquid or the foreign matters which can be contained in the negative pressure suction cavity less, but also the pressure fluctuation in the negative pressure suction cavity is larger, so that the liquid or the foreign matters in the body cannot smoothly enter the negative pressure suction cavity, and meanwhile, the fluctuation of the flow of the negative pressure suction is also larger, and the negative pressure suction effect is influenced; likewise, the negative pressure suction device is directly communicated with the instrument tube channel 20, and there still exists the problem that the liquid or foreign matters which can be contained in the proximal end of the instrument tube channel 20 are less, and the pressure fluctuation of the proximal end of the instrument tube channel 20 is larger; the application can reduce the influence of the entering liquid or foreign matters on the pressure of the negative pressure suction chamber 10 by increasing the accommodating space of the negative pressure suction chamber 10, and can also reduce the influence of the sucked liquid or foreign matters on the pressure of the negative pressure suction chamber 10, thereby maintaining the stability of the pressure in the negative pressure suction chamber 10.

In various embodiments of the present application, "proximal" and "distal" refer to the location of the components relative to the user's far and near position in the environment of use, wherein the end closer to the user is designated as "proximal" and the end farther from the user is designated as "distal".

The negative pressure suction chamber, the handle and the endoscope provided by the embodiment of the application are described in detail below by referring to fig. 1 to 9 through specific embodiments and application scenes thereof.

The first aspect of the present embodiment provides a negative pressure suction chamber.

The negative pressure suction chamber 10 of the present embodiment includes a chamber main body 11, a first connection channel 12, a second connection channel 13, and a third connection channel 14 which communicate with the chamber main body 11, wherein the first connection channel 12 and the second connection channel 13 are also communicated with an instrument tube channel 20 of an endoscope, the third connection channel 14 is also communicated with a negative pressure suction device, and the chamber main body 11 is disposed in an axial direction of an endoscope handle, an inner diameter of the first connection channel 12 and an inner diameter of the second connection channel 13 are larger than or equal to an inner diameter of the instrument tube channel 20, and an inner diameter of the chamber main body 11 is larger than an inner diameter of the first connection channel 12, an inner diameter of the second connection channel 13, and an inner diameter of the third connection channel 14, as shown in fig. 3 to 5. The chamber body 11 in this embodiment is disposed along the axial direction of the endoscope handle, that is, the central axis of the chamber body 11 is parallel to the central axis of the endoscope handle, as shown in fig. 2.

Preferably, the first connecting channel 12 and the second connecting channel 13 are formed as a single piece with the instrument tube channel 20, or they can be fixed by sealing glue. Preferably, the third connecting channel 14 is detachably connected to the negative pressure suction device. Specifically, when negative pressure suction is required, the third connection channel 14 is communicated with a negative pressure suction device; when negative pressure suction is not required, the third connection passage 14 is separated from the negative pressure suction device.

Since the inner diameter of the first connecting passage 12 and the inner diameter of the second connecting passage 13 are larger than or equal to the inner diameter of the instrument tube passage 20, and the inner diameter of the chamber body 11 is larger than the inner diameter of the first connecting passage 12, the inner diameter of the second connecting passage 13 and the inner diameter of the third connecting passage 14, the negative pressure suction chamber 10 of the present embodiment can be obtained such that the inner diameter of the chamber body 11 is significantly larger than the inner diameter of the instrument tube passage 20, as shown in fig. 3.

Preferably, the inner diameter of the chamber body 11 is 2 to 10 times the inner diameter of the first connecting channel 12 and/or the inner diameter of the second connecting channel 13. Preferably, the inner diameter of the chamber body 11 is 1.2 to 5 times the inner diameter of the third connecting passage 14. Preferably, the length of the chamber body 11 in the axial direction thereof is 1 to 5cm.

The negative pressure suction chamber 10 of the present embodiment includes a chamber body 11, a first connection channel 12, a second connection channel 13, and a third connection channel 14, which are communicated with the chamber body 11, the first connection channel 12 and the second connection channel 13 are also communicated with an instrument tube channel 20 of the endoscope, the third connection channel 14 is also communicated with a negative pressure suction device, and when negative pressure suction is performed, liquid or foreign matter in the body can be guided into the chamber body 11 to be sucked out through the negative pressure suction device, and the chamber body 11 can play a role of buffering the liquid or the foreign matter.

Further, since the inner diameter of the first connecting channel 12 and the inner diameter of the second connecting channel 13 of the negative pressure suction chamber 10 are larger than or equal to the inner diameter of the instrument tube channel 20, the inner diameter of the chamber body 11 is larger than the inner diameter of the first connecting channel 12, the inner diameter of the second connecting channel 13 and the inner diameter of the third connecting channel 14, that is, the chamber body 11 has larger dimensions than the instrument tube channel 20, the first connecting channel 12, the second connecting channel 13 and the third connecting channel 14, so that the chamber body 11 has larger accommodating space and can accommodate more liquid or foreign matters, therefore, the liquid or foreign matters entering the chamber body 11 can not have larger influence on the pressure in the chamber body 11, and meanwhile, the liquid or foreign matters sucked outwards can not have larger influence on the pressure in the chamber body 11, so that the pressure in the chamber body 11 can be kept stable, the liquid or foreign matters in the body can smoothly enter the chamber body 11, meanwhile, the flow of the negative pressure can be kept stable, and the negative pressure suction effect is ensured.

Further, since the chamber body 11 is provided in the axial direction of the endoscope handle 40, the inner diameter and length of the chamber body 11 can be increased as much as possible, so that the accommodation space of the chamber body 11 can be made as large as possible. Specifically, in the conventional endoscope, the instrument nozzle is disposed at the side of the handle 40, the negative pressure suction port is disposed at the proximal end of the handle 40, and the chamber body 11 is generally disposed in an inclined manner, and the instrument tube channel 20 is also disposed in a non-linear manner, so that the insertion of the treatment instrument and the input of the treatment substance are affected by the larger inner diameter or length of the chamber body 11, while the chamber body 11 of the present embodiment is disposed axially along the handle 40, so that the instrument nozzle is disposed at the proximal end of the handle 40, and the negative pressure suction port is disposed at the side of the handle 40.

Namely, the negative pressure suction chamber 10 of the present embodiment solves the technical problems that the proximal end of the negative pressure suction chamber or the instrument tube channel 20 in the related art can contain less liquid or foreign matters, and the pressure fluctuation in the proximal end of the negative pressure suction chamber or the instrument tube channel 20 is large.

According to a preferred embodiment, the first connecting channel 12 and the second connecting channel 13 are located at both ends of the chamber body 11 in the axial direction, and the third connecting channel 14 is located at the side of the chamber body 11, as shown in fig. 3 to 5. In the negative pressure suction chamber 10 according to the preferred embodiment, since the first connecting channel 12 and the second connecting channel 13 are in communication with the instrument tube channel 20 of the endoscope, the first connecting channel 12 and the second connecting channel 13 are located at two ends of the axial direction of the chamber body 11, that is, the instrument tube channel 20 is disposed along the axial direction of the chamber body 11, so that a treatment instrument can be conveniently and smoothly inserted into the instrument tube channel 20, a problem of turning in the insertion of the treatment instrument into the instrument tube channel 20 is avoided, and the instrument tube channel 20 and the chamber body 11 are distributed approximately linearly, so that the accommodating space of the chamber body 11 is as large as possible.

According to a preferred embodiment, the surface of the third attachment channel 14 on the side of the pull cord 30 of the endoscope is lower than the surface of the chamber body 11 with a gap 141 between the third attachment channel 14 and the pull cord 30, as shown in fig. 3. According to the negative pressure suction chamber 10 of the preferred technical scheme of the embodiment, the third connecting channel 14 is located at a lower position on the chamber main body 11, and a gap 141 is formed between the third connecting channel 14 and the traction rope 30, so that an avoidance space is formed at the third connecting channel 14, the traction rope 30 can pass through conveniently, the problem that when the third connecting channel 14 is located at a higher position on the chamber main body 11, the traction rope 30 is jacked up by the third connecting channel 14 and cannot keep straight when passing through the upper part of the third connecting channel 14, and the active bending section control of the insertion part 50 by the traction rope 30 is affected is solved.

According to a preferred embodiment, the chamber body 11 includes a first body portion 111 and a second body portion 112, and the first body portion 111 and the second body portion 112 are of a split type structure, as shown in fig. 6 to 9. Preferably, an adhesive layer is provided at the junction of the first body part 111 and the second body part 112 to enhance the sealability of the junction of the first body part 111 and the second body part 112, thereby securing the sealability of the chamber body 11. In the negative pressure suction chamber 10 according to the preferred technical solution of this embodiment, the chamber main body 11 and each connecting channel are hollow structures, and when the hollow structures are molded by injection molding, the core rod is required to occupy the space, and because the inner diameters of the first connecting channels 12, the second connecting channels 13 and the third connecting channels 14 at the two ends and the side surfaces of the chamber main body 11 are smaller than the inner diameter of the chamber main body 11, the first main body portion 111 and the second main body portion 112 are set to be split structures, and after the first main body portion 111 and the second main body portion 112 are integrally molded by injection molding, the core rod can be conveniently taken out.

According to a preferred embodiment, the first connecting channel 12 is located at the distal end of the first body portion 111, and the first connecting channel 12 is of unitary construction with the first body portion 111; the second connecting channel 13 is located at the proximal end of the second main body 112, and the second connecting channel 13 and the second main body 112 are in an integral structure; the third connecting channel 14 is located on the side surface of the first body portion 111 or the second body portion 112, and the third connecting channel 14 and the first body portion 111 or the second body portion 112 are in an integral structure, as shown in fig. 6 to 9. In the negative pressure suction chamber 10 according to the preferred embodiment, only the chamber body 11 is of a split structure, and the first connecting channel 12 and the first body 111, the second connecting channel 13 and the second body 112, and the third connecting channel 14 and the first body 111 or the second body 112 are of an integral structure, so that the connection points of the negative pressure suction chamber 10 can be reduced, and the tightness of the negative pressure suction chamber 10 can be ensured.

According to a preferred embodiment, the distal end of the first connecting channel 12 and the proximal end of the second connecting channel 13 are both tapered structures, and the distal end of the first body portion 111 and the proximal end of the second body portion 112 are both tapered structures, as shown in fig. 3-6, 8. As shown in fig. 4 and 5, a flat section is formed between the tapered portion of the first connecting channel 12 and the tapered portion of the first main body 111, and a flat section is also formed between the tapered portion of the second connecting channel 13 and the second main body 112, which is advantageous for the two tapered portions to be excessively connected. In the negative pressure suction chamber 10 according to the preferred embodiment, since the inner diameter of the chamber body 11 is larger and the size of the instrument tube channel 20 is smaller, the distal end of the first connecting channel 12, the proximal end of the second connecting channel 13, and the distal end of the first body portion 111 and the proximal end of the second body portion 112 are all configured to be tapered, so that the instrument tube channel 20 with a smaller size can be gradually transited to the chamber body 11 with a larger size, and the problem that the accommodating space of the chamber body 11 is affected due to the fact that the instrument tube channel 20 with a smaller size is directly connected to the chamber body 11 is avoided.

According to a preferred embodiment, the negative pressure suction chamber 10 further includes a fixing member 15, the fixing member 15 is disposed on the chamber body 11, and the fixing member 15 is engaged with a mounting seat 31 for fixing the traction rope 30, as shown in fig. 3 to 7. Preferably, an adhesive layer is further disposed between the fixing member 15 and the mounting seat 31, so that the fixing member 15 and the mounting seat 31 can be fixedly connected through the adhesive layer. The negative pressure suction chamber 10 of the preferred technical scheme of the embodiment further comprises a fixing piece 15, and the fixing of the negative pressure suction chamber 10 can be realized through the clamping connection of the fixing piece 15 and the mounting seat 31, so that the fixing performance of the position of the instrument tube channel 20 in the using process of the endoscope is ensured, and the treatment instrument is convenient to be inserted into the instrument tube channel 20; on the other hand, the mounting seat 31 for fixing the traction rope 30 is clamped with the fixing piece 15, so that an additional clamping structure is not required to be arranged in the handle shell 41, and the complexity of the structure of the handle shell 41 is not increased.

According to a preferred embodiment, the fixing member 15 includes a first fixing member 151 and a second fixing member 152, the first fixing member 151 and the second fixing member 152 are respectively located at both ends of the chamber body 11, and the first fixing member 151 and the second fixing member 152 are integrally formed with the chamber body 11, as shown in fig. 4 to 7. Preferably, the first fixing member 151 and the second fixing member 152 are located at both sides of the third connecting channel 14. In the negative pressure suction chamber 10 according to the preferred embodiment of the present invention, the first fixing member 151 and the second fixing member 152 positioned at two ends of the chamber body 11 fix the chamber body 11, so as to enhance the stability of fixing the chamber body 11; on the other hand, the first fixing member 151 and the second fixing member 152 are integrally formed with the chamber body 11, so that the production efficiency and the assembly efficiency of the suction chamber can be improved, and the assembly difficulty of the suction chamber 10 can be reduced.

A second aspect of the present embodiment provides a handle.

The handle 40 of the present embodiment includes a handle housing 41 and a negative pressure suction chamber 10, wherein the negative pressure suction chamber 10 is the negative pressure suction chamber 10 of any one of the aspects of the present embodiment, and the negative pressure suction chamber 10 is located in the handle housing 41, as shown in fig. 2.

The handle 40 of the present embodiment, due to including the negative pressure suction chamber 10 of any one of the embodiments, can play a role of buffering liquid or foreign matters through the negative pressure suction chamber 10, and meanwhile, the negative pressure suction chamber 10 also has a larger accommodating space, can accommodate more liquid or foreign matters, can keep the pressure in the chamber main body 11 stable, so that the liquid or foreign matters in the body can smoothly enter the chamber main body 11, and can also keep the flow of the negative pressure suction stable, thereby ensuring the negative pressure suction effect.

A third aspect of the present embodiments provides an endoscope.

The endoscope of the present embodiment includes a handle 40, an insertion portion 50, and a display device, where the handle 40 is the handle 40 according to any one of the embodiments, the handle 40 is connected to the insertion portion 50, and the handle 40 is further connected to the display device, as shown in fig. 1. The structure of the insertion portion 50 and the display device may be the same as the prior art, and will not be described again.

The endoscope of the present embodiment may be a disposable endoscope, a limited-time multiplexing endoscope, or an infinite-time multiplexing endoscope. The endoscope of the present embodiment may be a bronchoscope, a nephroscope, a esophagoscope, a gastroscope, a enteroscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, or the like. The present embodiment does not particularly limit the kind of endoscope.

The endoscope of the present embodiment, including the handle 40 according to any one of the present embodiments, has a stable pressure in the chamber body 11 in the handle 40, so that the liquid or foreign matters in the body can smoothly enter the chamber body 11, and the flow of the endoscope can be kept stable during the suction process of negative pressure, and the suction effect of negative pressure can be ensured.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model.

Claims (10)

1. A negative pressure suction chamber, characterized by comprising a chamber main body (11), a first connecting channel (12), a second connecting channel (13) and a third connecting channel (14) which are communicated with the chamber main body (11), wherein the first connecting channel (12) and the second connecting channel (13) are also communicated with an instrument tube channel (20) of an endoscope, the third connecting channel (14) is also communicated with a negative pressure suction device,

And the chamber body (11) is arranged along the axial direction of the endoscope handle, the inner diameter of the first connecting channel (12) and the inner diameter of the second connecting channel (13) are larger than or equal to the inner diameter of the instrument tube channel (20), and the inner diameter of the chamber body (11) is larger than the inner diameter of the first connecting channel (12), the inner diameter of the second connecting channel (13) and the inner diameter of the third connecting channel (14).

2. The negative pressure suction chamber according to claim 1, characterized in that the first connecting channel (12) and the second connecting channel (13) are located at both ends of the chamber body (11) in the axial direction, and the third connecting channel (14) is located at a side of the chamber body (11).

3. The negative pressure suction chamber according to claim 2, characterized in that the surface of the third connection channel (14) on the side of the pulling wire (30) close to the endoscope is lower than the surface of the chamber body (11), and that a gap (141) is provided between the third connection channel (14) and the pulling wire (30).

4. The negative pressure suction chamber according to claim 1, characterized in that the chamber body (11) comprises a first body portion (111) and a second body portion (112), and that the first body portion (111) and the second body portion (112) are of a split structure.

5. The negative pressure suction chamber according to claim 4, characterized in that the first connection channel (12) is located at a distal end of the first main body portion (111), and the first connection channel (12) is of a unitary structure with the first main body portion (111);

the second connecting channel (13) is positioned at the proximal end of the second main body part (112), and the second connecting channel (13) and the second main body part (112) are of an integral structure;

The third connecting channel (14) is located on the side surface of the first main body part (111) or the second main body part (112), and the third connecting channel (14) and the first main body part (111) or the second main body part (112) are of an integrated structure.

6. The negative pressure suction chamber according to claim 5, characterized in that the distal end of the first connecting channel (12) and the proximal end of the second connecting channel (13) are both of a tapered structure, and the distal end of the first body portion (111) and the proximal end of the second body portion (112) are both of a tapered structure.

7. The negative pressure suction chamber according to any one of claims 1 to 6, further comprising a fixing member (15), the fixing member (15) being provided on the chamber body (11), and the fixing member (15) being engaged with a mounting seat (31) for fixing the traction rope (30).

8. The negative pressure suction chamber according to claim 7, wherein the fixing member (15) includes a first fixing member (151) and a second fixing member (152), the first fixing member (151) and the second fixing member (152) are respectively located at both ends of the chamber main body (11), and the first fixing member (151) and the second fixing member (152) are of an integral structure with the chamber main body (11).

9. A handle, characterized by comprising a handle housing (41) and a negative pressure suction chamber (10), wherein the negative pressure suction chamber (10) is a negative pressure suction chamber according to any one of claims 1 to 8, the negative pressure suction chamber (10) being located within the handle housing (41).

10. An endoscope, characterized by comprising a handle (40), an insertion portion (50) and a display device, wherein the handle (40) is a handle according to claim 9, the handle (40) is connected to the insertion portion (50), and the handle (40) is further connected to the display device.