CN117122257A - Endoscopic instrument tube, distal expandable insertion portion, handle, and endoscope - Google Patents

Abstract

The application discloses an endoscopic instrument tube, a distal expandable insertion part, a handle and an endoscope, and relates to the technical field of medical instruments. The endoscope instrument tube comprises an instrument tube body, wherein a support component is arranged in a preset tube section at the far end of the instrument tube body, the support component is provided with a first state and a second state, when the support component is switched from the first state to the second state, the preset tube section at the far end of the instrument tube body deforms along the axial direction, the end face of the far end of the instrument tube body is switched from the first end face to the second end face, the section of the preset tube section is switched from the first section to the second section, and the first section area of the preset tube section in the first section is smaller than the second section area of the preset tube section in the second section. The endoscopic instrument tube can increase the flow cross section area of the endoscopic instrument tube by switching the support assembly from the first state to the second state, thereby meeting the requirement on the channel size of the endoscopic instrument tube during use.

Description

Endoscopic instrument tube, distal expandable insertion portion, handle, and endoscope

Technical Field

The application relates to the technical field of medical instruments, in particular to an endoscopic instrument tube, a distal expandable insertion part, a handle and an endoscope.

Background

Endoscopes are a commonly used medical device that can be directly accessed into the natural canal 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.

When the cavity channel inserted into the human body is narrow, such as bronchus, the distal end size of the insertion part of the traditional endoscope is larger than the narrow cavity channel size, so that the insertion part has larger obstruction in the insertion process, if the insertion part is forcibly inserted, the wall surface of the cavity channel of the patient is easy to bleed, so that the stress response of the patient is stronger, and the operation is difficult to go down, thereby not achieving the diagnosis and/or treatment effect.

Unlimited downsizing of the conventional endoscope insertion portion is not practical because: after the insertion part is inserted into the human body, liquid needs to be injected or pumped into the human body through an instrument pipeline inside the insertion part, the treatment instrument needs to be sent into the human body from the instrument pipeline, if the size of the insertion part is undersized, the undersize of the instrument pipeline is inevitably caused, the injection or the pumping of the liquid is difficult to ensure, and the treatment instrument cannot be sent into the human body. Therefore, after the insertion part is inserted into a human body, it is necessary to ensure a reasonable size of the instrument pipeline.

In summary, how to reduce the distal dimension of the insertion portion, so as to facilitate the insertion portion to reach the lesion of the patient smoothly, and make the instrument tube have a reasonable dimension suitable for the passage of the treatment instrument after the insertion portion reaches the lesion of the patient, is a problem to be solved by those skilled in the art.

Disclosure of Invention

The application aims to provide an endoscope instrument tube, a far-end expandable insertion part, a handle and an endoscope, which solve the technical problems that the endoscope in the prior art is difficult to ensure that the far-end size of the insertion part is smaller, so that the insertion part can conveniently and smoothly reach a focus of a patient, and meanwhile, an instrument pipeline has a reasonable size suitable for passing a treatment instrument after the insertion part reaches the focus of the patient.

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

in a first aspect the application provides an endoscopic instrument tube.

The endoscope instrument tube comprises an instrument tube body, wherein a support component is arranged in a preset tube section at the far end of the instrument tube body, the support component is provided with a first state and a second state, when the support component is switched from the first state to the second state, the preset tube section at the far end of the instrument tube body is deformed along the axial direction, the end face of the far end of the instrument tube body is switched from a first end face shape to a second end face shape, the section of the preset tube section is switched from a first section shape to a second section shape, and the first section area of the preset tube section in the first section shape is smaller than the second section area of the preset tube section in the second section shape.

Further, the supporting component comprises a supporting part and a control part, wherein the supporting part is of an annular structure with a hollow inside; one end of the control part is fixed on the supporting part, the other end of the control part is fixed on the handle of the endoscope, and the control part is used for applying power to the supporting part, the power direction faces the proximal end of the instrument tube body, and the supporting part is switched from a first state to a second state. Further, the supporting part is fixed on the inner wall of the preset pipe section, and the control part is movably arranged in the channel of the instrument pipe body; or the preset pipe section is internally provided with a containing cavity, the supporting part is fixed in the containing cavity, and the control part is movably arranged in the containing cavity.

Further, the supporting part comprises a pull ring, the control part is a traction rope, the traction rope is fixedly connected with the pull ring, and the pull ring is switched from a first state to a second state by the pulling force exerted by the traction rope; or the supporting part comprises a plurality of pull rings, the control part is a traction rope, the pull rings are uniformly distributed in the preset pipe section, the traction rope is fixedly connected with the pull rings, and the pull force applied by the traction rope enables the pull rings to be synchronously switched from a first state to a second state.

Further, the connection point of the traction rope and the pull ring is positioned at one side of the fixing part far away from the endoscope insertion part; and when the pull ring is in a first state, the pull ring is obliquely arranged, and when the pulling rope applies pulling force to the pull ring, the pull ring is switched from the first state to a second state, and one side, away from the fixing part, of the instrument tube body is moved to a direction close to the proximal end of the instrument tube body.

Further, when the pull ring is in the first state and the second state, an included angle between the pull ring and the bottom wall of the preset pipe section meets the following conditions: alpha is less than or equal to 90 degrees, wherein alpha is an included angle between the pull ring and the bottom wall of the preset pipe section when the pull ring is in a first state, and beta is an included angle between the pull ring and the bottom wall of the preset pipe section when the pull ring is in a second state.

Further, when the support assembly is in the first state, the end face of the distal end of the instrument tube body is parallel to the mounting face of the mounting seat of the endoscope insertion part; when the support assembly is in the second state, the end of the distal end of the instrument tube body is inclined towards the proximal end of the instrument tube body from the side close to the mounting seat to the side far away from the mounting seat.

A second aspect of the application provides an endoscope distal expandable insertion portion.

The application discloses an endoscope distal end expandable insertion part, which comprises an insertion part body and an endoscope instrument tube, wherein the endoscope instrument tube is the endoscope instrument tube according to any one of the technical schemes, a containing space is arranged in the insertion part body, the containing space is arranged along the axis direction of the insertion part body, and the endoscope instrument tube is arranged in the containing space.

A third aspect of the application provides an endoscope handle.

The endoscope handle comprises a handle body and an insertion part, wherein the insertion part is the endoscope distal end expandable insertion part according to any one of the technical schemes, and the insertion part is arranged at the distal end of the handle body.

A fourth aspect of the present application provides an endoscope.

The endoscope comprises the endoscope handle according to any one of the technical schemes.

The technical scheme adopted by the application can achieve the following beneficial effects:

when the insertion part of the endoscope is inserted into the cavity, the support component is in the first state, the cross-sectional area of the preset pipe section is smaller, the resistance of the insertion part of the endoscope in the insertion process is smaller, and the insertion of the insertion part of the endoscope into the smaller cavity is facilitated; when the insertion part of the endoscope reaches the target position, the support assembly is switched from the first state to the second state, at the moment, the preset pipe section at the distal end of the instrument pipe body deforms along the axial direction, and meanwhile, the radial dimension of the preset pipe section is increased, namely the cross-sectional area of the preset pipe section after deformation is increased, so that the flow cross-sectional area of the endoscope instrument pipe is increased, the requirements of liquid injection and suction on the channel dimension of the endoscope instrument pipe can be met, and the requirements of the treatment instrument on the channel dimension of the endoscope instrument pipe can also be met. On the other hand, when the support component is switched from the first state to the second state, the radial dimension of the preset pipe section can be increased, the preset pipe section at the far end of the instrument pipe body deforms along the axial direction, the end face of the far end of the instrument pipe body can be switched from the first end face shape to the second end face shape, namely, the end face dimension of the far end of the instrument pipe body is increased, the larger end face dimension is not only beneficial to liquid injection and suction, but also can provide a larger movable space for rotation of the treatment device.

Namely, the endoscope instrument tube can solve the technical problem of how to reduce the distal end size of the insertion part and enable the instrument tube to have reasonable size after the insertion part reaches a focus of a patient by enabling the support component to be in different states when the insertion part of the endoscope is inserted into the cavity and reaches the target position.

In addition, the preferred technical scheme of the application can also achieve the following beneficial effects:

according to the endoscope instrument tube in the preferred technical scheme, the connecting point of the traction rope and the pull ring is positioned at one side of the fixed part far away from the endoscope insertion part, when a pulling force is applied to the pull ring through the traction rope and acts on the connecting point, when the pull ring is switched from the first state to the second state, the external force drives one side of the instrument tube body far away from the fixed part to move in the direction close to the proximal end of the instrument tube body, so that one side of the instrument tube body close to the fixed part is always kept in a sealing state with the fixed part, the problem that liquid residues are easy to exist at the gap and the use safety of the endoscope is influenced is avoided.

According to the endoscope instrument tube in the preferred technical scheme, when the supporting component is in the first state, the end face of the distal end of the instrument tube body is parallel to the mounting face of the mounting seat of the endoscope insertion part, when the supporting component is in the second state, the end face of the distal end of the instrument tube body is inclined towards the proximal end of the instrument tube body from one side close to the mounting seat to one side far away from the mounting seat, namely, when the supporting component is in the second state, the end face of the distal end of the instrument tube body is of an inclined structure, and compared with the structure that the end face is of a vertical surface, the end face area of the inclined structure is larger, so that liquid injection and suction are facilitated, and a larger movable space can be provided for rotation of a treatment device.

Drawings

In order to more clearly illustrate the embodiments of the application 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 application, 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 perspective view of an endoscopic instrument tube of the present application in a first state of the support assembly;

FIG. 2 is an internal schematic view of an endoscopic instrument tube of the present application with the support assembly in a first state;

FIG. 3 is a schematic perspective view of an endoscopic instrument tube of the present application in a second state of the support assembly;

FIG. 4 is a front view of the endoscopic instrument tube of the present application in a second state of the support assembly;

FIG. 5 is an internal schematic view of the endoscopic instrument tube of the present application in a second state of the support assembly;

FIG. 6 is a perspective view of the tab of the application in a first state;

FIG. 7 is a front view of the tab of the application in a first state;

FIG. 8 is a perspective view of the tab of the application in a second state;

FIG. 9 is a front view of the tab of the application in a second state;

fig. 10 is a schematic perspective view of an endoscope of the present application.

In the figure: 10. an instrument tube body; 11. presetting a pipe section; 111. a receiving chamber; 112. a bottom wall; 12. a support assembly; 121. a support part; 122. a control unit; 123. a connection point; 13. a channel; 14. an end face; 20. a handle; 30. a fixing part; 40. a mounting base; 41. a mounting surface; 42. a light source; 43. a camera module; 50. an insertion portion.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, based on the examples herein, which are within the scope of the application as defined by the claims, will be within the scope of the application 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.

In various embodiments of the present application, "proximal" and "distal" refer to the proximal and distal positions of an endoscope and its accessories relative to a user in the environment of use. Wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

The endoscopic instrument tube, distal expandable insertion portion, handle and endoscope provided by the present application will be described in detail with reference to fig. 1 to 10 of the accompanying drawings, by way of specific examples and application scenarios thereof.

Example 1

This embodiment will explain the endoscopic instrument tube provided by the present application in detail.

The endoscope apparatus tube of this embodiment includes an apparatus tube body 10, a support component 12 is disposed in a preset tube segment 11 at a distal end of the apparatus tube body 10, the support component 12 has a first state and a second state, when the support component 12 is switched from the first state to the second state, the preset tube segment 11 at the distal end of the apparatus tube body 10 is deformed along an axial direction, and an end face 14 at the distal end of the apparatus tube body 10 is switched from a first end face state to a second end face state, a section of the preset tube segment 11 is switched from the first section state to the second section state, and a first section area of the preset tube segment 11 in the first section state is smaller than a second section area of the preset tube segment 11 in the second section state, as shown in fig. 1 to 5. Fig. 1 to 5 show only schematic structural views of a distal end portion of the instrument tube body 10, and the length of the instrument tube body 10 is not limited to the length shown in the drawings. Preferably, the support assembly 12 is switched from the first state to the second state under the action of an external force, and the external force deforms the preset tube section 11 at the distal end of the instrument tube body 10 along the axial direction, and the end face 14 at the distal end of the instrument tube body 10 is switched from the first end face shape to the second end face shape, and the section of the preset tube section 11 is switched from the first section shape to the second section shape. More preferably, the direction of action of the external force is along the axial direction of the predetermined tube section 11. More preferably, the external force may be an operator applied force or a force applied by the remaining structure to the support assembly.

Fig. 1 and 2 show the support assembly 12 in a first state, wherein the distal end face 14 of the instrument tube body 10 is in a first end face shape, and the cross section of the preset tube section 11 is in a first cross section shape, and at this time, the distal end face 14 of the instrument tube body 10 is in a compressed flat mouth shape in the radial direction, and the diameter of the internal channel 13 of the instrument tube body 10 is smaller; fig. 3 to 5 show the support assembly 12 in a second state, wherein the distal end surface 14 of the instrument tube body 10 is in a second end surface configuration, and the cross section of the preset tube segment 11 is in a second cross section configuration. When the support component 12 is switched from the first state to the second state, the height of the support component 12 in the radial direction of the preset pipe section 11 is increased, so that the size of the internal channel 13 of the instrument pipe body 10 in the radial direction can be enlarged through the support component 12, namely, the first cross-sectional area of the preset pipe section 11 in the first cross-sectional shape is smaller than the second cross-sectional area of the preset pipe section 11 in the second cross-sectional shape; meanwhile, when the supporting component 12 is switched from the first state to the second state under the action of the external force, the external force acts on the instrument tube body 10 at the same time, so that the instrument tube body 10 deforms towards the acting direction of the external force, that is, the end face of the distal end of the instrument tube body 10 is switched from the first end face to the second end face.

Preferably, the instrument tube body 10 is a flexible tube body with a certain deflection, so that the instrument tube body 10 can deform under the action of external force. The preset tube section 11 at the distal end of the instrument tube body 10 deforms along the axial direction, which may be specifically: the pre-set tube segment 11 is deformed in the axial direction and in a direction towards the proximal end of the instrument tube body 10, as indicated by the arrow in fig. 1. The axial direction refers to the axial direction of the instrument tube body 10, and may also be referred to as the axial direction of the preset tube segment 11. The first and second cross-sectional areas of the preset tube segment 11 refer to the cross-sectional area of the preset tube segment 11 in its radial direction, and more specifically refer to the cross-sectional area of the channel 13 inside the preset tube segment 11 in its radial direction.

In the endoscope apparatus tube of the embodiment, when the insertion portion 50 of the endoscope is inserted into the cavity, the support assembly 12 is in the first state, and the cross-sectional area of the preset tube section 11 is smaller, so that the insertion portion 50 of the endoscope receives smaller resistance in the insertion process, and the insertion of the insertion portion 50 of the endoscope into the smaller cavity is facilitated; when the insertion portion 50 of the endoscope reaches the target position, the support assembly 12 is switched from the first state to the second state, and at this time, the preset tube segment 11 at the distal end of the instrument tube body 10 is deformed in the axial direction, and meanwhile, the radial dimension of the preset tube segment 11 is increased, that is, the cross-sectional area of the deformed preset tube segment 11 is increased, so that the flow cross-sectional area of the endoscope instrument tube is increased, thereby meeting the requirements of liquid injection and suction on the channel dimension of the endoscope instrument tube and meeting the requirements of the treatment instrument on the channel dimension of the endoscope instrument tube.

On the other hand, when the support assembly 12 is switched from the first state to the second state, not only the radial dimension of the preset tube segment 11 can be increased, but also the preset tube segment 11 at the distal end of the instrument tube body 10 can be deformed in the axial direction, and at this time, the distal end face of the instrument tube body 10 can be switched from the first end face shape to the second end face shape, that is, the distal end face dimension of the instrument tube body 10 is increased, and the larger end face dimension is not only beneficial to liquid injection and suction, but also can provide a larger movable space for rotation of the treatment device.

That is, the endoscope apparatus tube of the present embodiment, by making the support member 12 in different states when the insertion portion 50 of the endoscope is inserted into the lumen and after reaching the target site, can solve the problem of how to reduce the distal end size of the insertion portion 50 while making the apparatus tube of reasonable size after the insertion portion 50 reaches the lesion of the patient.

According to a preferred embodiment, the support assembly 12 includes a support portion 121 and a control portion 122, as shown in fig. 2 and 5. Preferably, the supporting portion 121 has an annular structure with a hollow interior; one end of the control part 122 is fixed to the support part 121, the other end of the control part 122 is fixed to the handle 20 of the endoscope, and the control part 122 is configured to apply power to the support part 121 in a direction toward the proximal end of the instrument tube body 10, and switch the support part 121 from the first state to the second state, as shown in fig. 2 and 5. More preferably, the power applied to the support portion 121 by the control portion 122 is, for example, a tensile force. The power direction is toward the proximal end of the instrument tube body 10, i.e.: the direction of the force is indicated by the arrow in fig. 1. The support portion 121 is a hollow annular structure, which not only allows the inside of the predetermined tube section 11 to form the passage 13 for the passage of the liquid and the treatment instrument, but also has good compatibility with the predetermined tube section 11. Preferably, the inner diameter of the support portion 121 is not smaller than the inner diameter of the predetermined tube segment 11 in the second cross-sectional configuration, so that there is sufficient space within the predetermined tube segment 11 for the passage of fluids and treatment instruments.

According to a preferred embodiment, the support portion 121 is fixed to the inner wall of the preset tube segment 11, and the control portion 122 is movably disposed in the channel 13 of the instrument tube body 10; or the accommodating chamber 111 is formed in the preset pipe section 11, the supporting part 121 is fixed in the accommodating chamber 111, and the control part 122 is movably arranged in the accommodating chamber 111. The accommodating chamber is shown in fig. 2 or fig. 5. Preferably, the supporting portion 121 and the preset pipe section 11 are welded or integrally formed. Preferably, when the supporting portion 121 is fixed to the inner wall of the preset pipe section 11, the control portion 122 is movable at least in the axial direction of the preset pipe section 11; when the supporting portion 121 is fixed in the accommodating chamber 111 of the preset tube segment 11, the control portion 122 is movable at least along the axial direction of the accommodating chamber 111. In the endoscope apparatus tube according to the preferred embodiment, the control section 122 is movable in the channel 13 of the apparatus tube body 10 or in the housing chamber 111, so that an external force can be applied to the support section 121 by the control section 122 and the support section 121 can be switched from the first state to the second state; meanwhile, the supporting part 121 is fixedly connected with the preset pipe section 11, so that the applied external force can act on the instrument pipe body 10 at the same time, and the instrument pipe body 10 can deform in the acting direction of the external force, namely, the end face of the distal end of the instrument pipe body 10 is switched from the first end face form to the second end face form.

According to a preferred embodiment, the supporting portion 121 includes a pull ring, the control portion 122 is a pull rope, the pull rope is fixedly connected with the pull ring, and the pull ring is switched from the first state to the second state by the pulling force applied by the pull rope; or the supporting portion 121 includes a plurality of pull rings, the control portion 122 is a pull rope, the pull rings are uniformly distributed in the preset pipe section 11, the pull rope is fixedly connected with the pull rings, and the pull rings are synchronously switched from the first state to the second state by the pull force exerted by the pull rope. Preferably, the pull ring and the traction rope are fixedly connected in a riveting, welding, clamping or bonding mode. FIGS. 6 and 7 show schematic views of the tab in a first state; fig. 8 and 9 show schematic views of the tab in a second state. When the support portion 121 includes a pull ring, the length of the deformable preset tube segment 11 is limited, and preferably, a plurality of pull rings may be provided based on the length of the preset tube segment 11 to be deformed, so as to ensure that the endoscopic instrument tube can meet the requirements of the injection or suction and the treatment instrument for the size of the endoscopic instrument tube. The plurality of pull rings are arranged at intervals, so that the use materials can be reduced, the cost is saved, and the applied external force can be reduced. Further, when the supporting portion 121 includes a plurality of pull rings, the pull rope is fixedly connected with each pull ring, so that the plurality of pull rings can be ensured to be synchronously switched under the action of external force, and further, all the pull rings can be ensured to be switched from the first state to the second state, so as to ensure the reliability of deformation of the preset tube section 11 of the instrument tube body 10.

When the supporting portion 121 includes a plurality of pull rings, if the pull rope is not fixedly connected with all the pull rings, the pull rings cannot be switched from the first state to the second state under the action of external force. Specifically, taking the case where the supporting portion 121 shown in fig. 2 includes 7 tabs as an example, it is understood that the number of tabs is not limited to 7, but may be 2, 3, 4, 5, 6, 8, or even more.

The pull rings in fig. 2 are sequentially marked as a first pull ring, a second pull ring, a third pull ring, a fourth pull ring, a fifth pull ring, a sixth pull ring and a seventh pull ring from left to right, if one end of the pull rope is fixed at the first pull ring, the other end of the pull rope passes through the first pull ring, the second pull ring, the third pull ring, the fourth pull ring, the fifth pull ring, the sixth pull ring and the seventh pull ring and is fixedly connected with the handle of the endoscope, and when an acting force is applied to the pull rope, the pulling force on the pull rope acts on the first pull ring and drives the first pull ring to be switched from a first state to a second state; when the first pull ring is switched from the first state to the second state, the first pull ring generates an acting force on a preset pipe section 11 positioned between the first pull ring and the second pull ring and drives the preset pipe section 11 to deform along the axial direction of the preset pipe section and in the direction close to the proximal end of the instrument pipe body 10, and the preset pipe section 11 generates an acting force on the second pull ring in the deformation process and drives the first pull ring to be switched from the first state to the second state; when the second pull ring is switched from the first state to the second state, the second pull ring generates an acting force on a preset pipe section 11 positioned between the second pull ring and the third pull ring, and drives the preset pipe section 11 to deform along the axial direction of the preset pipe section and in the direction close to the proximal end of the instrument pipe body 10, and the preset pipe section 11 generates an acting force on the third pull ring in the deformation process; and so on until all tabs and the predetermined tube segment 11 have been deformed. In this process, the force applied by the traction rope is gradually transferred to the direction close to the proximal end of the instrument tube body 10, and in the process of transferring the force, besides being used for driving the preset tube segment 11 to deform, there is some loss, so that the tension transferred to the seventh pull ring is smaller, and the seventh pull ring cannot be ensured to be switched from the first state to the second state, so that the preset tube segment 11 cannot be ensured to complete the preset deformation.

According to a preferred embodiment, the attachment point 123 of the pull cord to the pull ring is located on the side of the fixation section 30 remote from the endoscope insertion section; and when the pull ring is in the first state, the pull ring is obliquely arranged, and when the pulling rope applies pulling force to the pull ring, the pull ring is switched from the first state to the second state, and one side of the instrument tube body 10 away from the fixing part 30 moves towards the direction close to the proximal end of the instrument tube body 10, as shown in fig. 2 and 5. Fig. 2 and 5 only show the connection point 123 of the first tab to the pull rope, which does not represent here that there is no connection point 123 between the remaining tab and the pull rope. Preferably, the pull ring is inclined in a direction toward the proximal end of the instrument tube body 10, as shown in FIG. 2. The present application is not limited thereto, and instead of fig. 2, the pull ring may be inclined in a direction approaching the distal end of the instrument tube body 10, and the mount 40 of the endoscope insertion portion may be provided below the instrument tube body 10. In the endoscope apparatus tube according to the preferred technical solution of this embodiment, the connection point 123 of the pulling rope and the pull ring is located at one side of the fixing portion 30 far away from the endoscope insertion portion, when a pulling force is applied to the pull ring by the pulling rope, the pulling force acts on the connection point 123, and when the pull ring is switched from the first state to the second state, the external force drives one side of the apparatus tube body 10 far away from the fixing portion 30 to move in a direction close to the proximal end of the apparatus tube body 10, so that one side of the apparatus tube body 10 close to the fixing portion 30 is always kept in a sealing state with the fixing portion 30, and a gap is avoided between the apparatus tube body 10 and the fixing portion 30, and the problem that the use safety of the endoscope is affected due to the fact that liquid remains easily exists in the gap is avoided.

According to a preferred embodiment, the angle between the tab and the bottom wall 112 of the predetermined tube segment 11 is such that, when the tab is in the first and second state: alpha < beta is less than or equal to 90 degrees, wherein alpha is an included angle between the pull ring and the bottom wall 112 of the preset pipe section 11 when the pull ring is in a first state, and beta is an included angle between the pull ring and the bottom wall 112 of the preset pipe section 11 when the pull ring is in a second state. Specifically, α and β are located in the oblique direction of the tab. More specifically, as shown in fig. 2 and 5, when the pull ring is inclined in a direction approaching the proximal end of the instrument tube body 10, the angle between the pull ring and the bottom wall 112 of the preset tube segment 11 is the angle located in the direction approaching the proximal end of the instrument tube body 10; accordingly, when the pull ring is inclined in a direction approaching the distal end of the instrument tube body 10, the angle between the pull ring and the bottom wall 112 of the preset tube segment 11 is the angle located in the direction approaching the distal end of the instrument tube body 10. Preferably, when the pull ring is in the first state, α should be as small as possible, so that the cross-sectional area of the predetermined tube segment is as small as possible, and the resistance to the insertion of the endoscope insertion portion 50 during insertion is as small as possible, which is advantageous for insertion of the endoscope insertion portion 50 into a smaller lumen. Specifically, the value of α may be 5 to 45 °. More specifically, α may have a value of 10 °, 15 °, 20 °, 25 °, 30 °. When the pull ring is in the second state, beta=90°, as shown in fig. 5, the cross-sectional area of the preset tube segment 11 can be maximized, so that the requirements of liquid injection and suction on the channel size of the endoscopic instrument tube can be met, and the requirements of the treatment instrument on the channel size of the endoscopic instrument tube can also be met.

According to a preferred embodiment, when the support assembly 12 is in the first state, the end face 14 of the distal end of the instrument tube body 10 is parallel to the mounting face 41 of the mounting block 40 of the endoscope insertion section, as shown in fig. 1 and 2; in the second state, the distal end surface 14 of the instrument tube body 10 is inclined toward the proximal end of the instrument tube body 10 from the side closer to the mount 40 to the side farther from the mount 40, as shown in fig. 3 to 5. In the endoscope apparatus tube according to the preferred technical solution of this embodiment, when the support assembly 12 is in the second state, from the side close to the mounting seat 40 to the side far away from the mounting seat 40, the distal end face 14 of the apparatus tube body 10 is inclined toward the proximal end of the apparatus tube body 10, that is, when the support assembly 12 is in the second state, the distal end face of the apparatus tube body 10 is in an inclined structure, and compared with a structure in which the end face is a vertical face, the area of the end face of the inclined structure is larger, which is not only beneficial to liquid injection and suction, but also provides a larger moving space for rotation of the treatment device.

Preferably, the distal end surface 14 of the instrument tube body 10 is of an inclined configuration, which may be referred to as: the end face 14 of the distal end of the instrument tube body 10 is gradually inclined toward the proximal end of the instrument tube body 10 from the side close to the mounting seat 40 to the side far from the mounting seat 40; it may also be referred to as: one side near the mount 40 (e.g., above a horizontal plane in which the central axis of the instrument tube body 10 is located, which is the side near the mount 40, below which is the side far from the mount 40), the end face 14 of the distal end of the instrument tube body 10 is parallel to the mounting face 41 of the mount 40 of the endoscope insertion section; the distal end face 14 of the instrument tube body 10 is gradually inclined toward the proximal end of the instrument tube body 10 on the side away from the mount 40 (the farther the distal end face 14 of the instrument tube body 10 is from the mount 40, the greater the degree of inclination toward the proximal end of the instrument tube body 10), as shown in fig. 3 to 5.

Example 2

This embodiment describes the distal expandable insertion portion of the endoscope of the present application in detail.

The distal expandable insertion portion of the endoscope of the present embodiment includes an insertion portion body and an endoscopic instrument tube, wherein the endoscopic instrument tube is the endoscopic instrument tube according to any one of the technical solutions of embodiment 1, a receiving space is provided in the insertion portion body, the receiving space is provided along an axial direction of the insertion portion body, and the endoscopic instrument tube is provided in the receiving space. The inserting part body further comprises a fixing part 30 and a mounting seat 40, and a light source 42 and a camera module 43 are mounted on the mounting seat 40; the fixing portion 30 is used to fixedly connect the mount 40 to the endoscopic instrument tube, and the fixing portion 30 is, for example, an injection-molded member, as shown in fig. 1 to 5. Fig. 1 to 5 show only schematic views of the distal end of the insertion portion, and the length of the insertion portion is not limited to the length shown in the drawings.

In the distal expandable insertion portion of the endoscope of the present embodiment, when the insertion portion 50 of the endoscope is inserted into the lumen, the support assembly 12 is in the first state, and the cross-sectional area of the preset tube segment 11 is smaller, so that the insertion portion 50 of the endoscope receives smaller resistance in the insertion process, which is beneficial for the insertion of the insertion portion 50 of the endoscope into the smaller lumen; when the insertion portion 50 of the endoscope reaches the target position, the support assembly 12 is switched from the first state to the second state, and at this time, the preset tube segment 11 at the distal end of the instrument tube body 10 is deformed in the axial direction, and meanwhile, the radial dimension of the preset tube segment 11 is increased, that is, the cross-sectional area of the deformed preset tube segment 11 is increased, so that the flow cross-sectional area of the endoscope instrument tube is increased, thereby meeting the requirements of liquid injection and suction on the channel dimension of the endoscope instrument tube and meeting the requirements of the treatment instrument on the channel dimension of the endoscope instrument tube. That is, the endoscope insertion portion 50 of the present embodiment is a distal-end expandable insertion portion.

On the other hand, when the support assembly 12 is switched from the first state to the second state, the expandable insertion portion at the distal end of the endoscope of the present embodiment not only can increase the radial dimension of the preset tube segment 11, but also can deform the preset tube segment 11 at the distal end of the instrument tube body 10 in the axial direction, and at this time, the distal end face of the instrument tube body 10 can be switched from the first end face state to the second end face state, that is, the distal end face dimension of the instrument tube body 10 is increased, and the larger end face dimension is not only beneficial to liquid injection and suction, but also can provide a larger active space for rotation of the treatment device.

According to a preferred embodiment, the distal expandable insertion portion of the endoscope further includes a coating layer which encloses the securing portion 30 and the instrument tube body 10, and the outer surface of the coating layer has a smooth structure, so that the resistance of the insertion portion during insertion into the lumen can be further reduced.

Example 3

This embodiment describes the endoscope handle of the present application in detail.

The endoscope handle of the present embodiment includes a handle body and an insertion portion 50, wherein the insertion portion 50 is the endoscope distal end expandable insertion portion of any one of the aspects of embodiment 2, and the insertion portion 50 is provided at the distal end of the handle body, as shown in fig. 10. The handle body is provided with an action part for applying a pulling force to the control part 122, in addition to the conventional structure. The active portion may be similar to the structure that controls the distal bending of the insertion portion 50. When the pull ring is in the first state, the traction rope is in a straightened state, one end of the traction rope, which is far away from the pull ring, is fixed on the handle body, and an acting force is applied to the pull ring through the acting part, so that the pull ring can be switched from the first state to the second state; when the applied force is removed, the pull ring is restored to the first state under the action of the resilience force of the traction rope, and meanwhile, the end face 14 of the distal end of the instrument tube body 10 is switched from the second end face form to the first end face form, and the preset tube segment 11 is switched from the second section form to the first section form, so that the insertion part 50 is convenient to take out the cavity.

The endoscope handle of this embodiment, when the insertion portion 50 of the endoscope is inserted into the lumen and reaches the target position, by making the support assembly 12 in different states, not only can the resistance that the insertion portion 50 of the endoscope receives during insertion be small, be favorable to the insertion portion 50 of the endoscope to insert into the smaller lumen, but also can satisfy the requirements of liquid injection and suction on the channel size of the endoscopic instrument tube, and also can satisfy the requirements of the treatment instrument on the channel size of the endoscopic instrument tube. On the other hand, when the support assembly 12 is switched from the first state to the second state, the endoscope handle of the present embodiment not only can satisfy the requirements of liquid injection and suction on the channel size of the endoscope apparatus tube, but also can increase the end face size of the distal end of the apparatus tube body 10, and the larger end face size is not only beneficial to liquid injection and suction, but also can provide a larger moving space for the rotation of the treatment apparatus.

Example 4

The endoscope of the present application will be described in detail in this embodiment.

The endoscope of the present embodiment includes the endoscope handle of any one of the aspects of embodiment 3, as shown in fig. 10. The rest of the structure of the endoscope may be the same as the existing structure, and will not be described here again, for example, the rest of the structure of the endoscope is a display device of the 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 this embodiment, when the insertion portion 50 of the endoscope is inserted into the lumen and reaches the target position, by making the support assembly 12 in different states, not only can the resistance that the insertion portion 50 of the endoscope receives during insertion be small, which is favorable for the insertion portion 50 of the endoscope to be inserted into the small lumen, but also can satisfy the requirements of liquid injection and suction on the channel size of the endoscopic instrument tube, and also can satisfy the requirements of the treatment instrument on the channel size of the endoscopic instrument tube. On the other hand, when the support assembly 12 is switched from the first state to the second state, the endoscope of the present embodiment can not only satisfy the requirements of liquid injection and suction on the channel size of the endoscopic instrument tube, but also increase the end face size of the distal end of the instrument tube body 10, and the larger end face size is not only beneficial to liquid injection and suction, but also provides a larger movable space for the rotation of the treatment device.

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 application, and the present application 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 application.

Claims (10)

1. An endoscopic instrument tube is characterized by comprising an instrument tube body (10), wherein a support component (12) is arranged in a preset tube section (11) at the distal end of the instrument tube body (10), the support component (12) has a first state and a second state, and when the support component (12) is switched from the first state to the second state,

the device comprises a device tube body (10), a preset tube section (11) at the distal end of the device tube body (10) deforms along the axial direction, an end face (14) at the distal end of the device tube body (10) is switched from a first end face shape to a second end face shape, the section of the preset tube section (11) is switched from a first section shape to a second section shape, and the first section area of the preset tube section (11) in the first section shape is smaller than the second section area of the preset tube section (11) in the second section shape.

2. The endoscopic instrument tube according to claim 1, wherein said support assembly (12) comprises a support portion (121) and a control portion (122), wherein,

the supporting part (121) is of an annular structure with a hollow inside;

one end of the control part (122) is fixed on the supporting part (121), the other end of the control part (122) is fixed on the handle (20) of the endoscope, the control part (122) is used for applying power to the supporting part (121), the power direction faces the proximal end of the instrument tube body (10), and the supporting part (121) is switched from a first state to a second state.

3. An endoscopic instrument tube according to claim 2, wherein the support portion (121) is fixed to an inner wall of the preset tube section (11), the control portion (122) being movably arranged in a channel (13) of the instrument tube body (10); or alternatively

The pipe section (11) is internally provided with a containing chamber (111), the supporting part (121) is fixed in the containing chamber (111), and the control part (122) is movably arranged in the containing chamber (111).

4. The endoscopic instrument tube according to claim 2, wherein said support portion (121) comprises a pull ring, said control portion (122) being a pull cord fixedly connected to said pull ring and being switched from a first state to a second state by a pulling force exerted by said pull cord; or alternatively

The supporting part (121) comprises a plurality of pull rings, the control part (122) is a traction rope, the pull rings are uniformly distributed in the preset pipe section (11), the traction rope is fixedly connected with the plurality of pull rings, and the pull force applied by the traction rope enables the plurality of pull rings to be synchronously switched from a first state to a second state.

5. The endoscopic instrument tube according to claim 4, wherein the connection point (123) of the pull cord to the pull ring is located at a side of the fixation portion (30) remote from the endoscope insertion portion; and is also provided with

When the pull ring is in a first state, the pull ring is obliquely arranged, and when the pulling rope applies pulling force to the pull ring, the pull ring is switched from the first state to a second state, and one side, away from the fixing part (30), of the instrument tube body (10) moves towards a direction close to the proximal end of the instrument tube body (10).

6. The endoscopic instrument tube according to claim 5, wherein an angle between the pull ring and a bottom wall (112) of the preset tube segment (11) when the pull ring is in the first state and the second state is such that: alpha is less than or equal to 90 degrees, wherein alpha is an included angle between the pull ring and the bottom wall (112) of the preset pipe section (11) when the pull ring is in a first state, and beta is an included angle between the pull ring and the bottom wall (112) of the preset pipe section (11) when the pull ring is in a second state.

7. The endoscopic instrument tube according to any one of claims 1 to 6, wherein an end surface (14) of the distal end of the instrument tube body (10) is parallel to a mounting surface (41) of a mounting seat (40) of an endoscope insertion portion when the support assembly (12) is in a first state;

when the support assembly (12) is in the second state, the end face (14) of the distal end of the instrument tube body (10) is inclined towards the proximal end of the instrument tube body (10) from the side close to the mounting seat (40) to the side far away from the mounting seat (40).

8. An endoscope distal end expandable insertion portion, characterized by comprising an insertion portion body and an endoscope instrument tube, wherein the endoscope instrument tube is the endoscope instrument tube according to any one of claims 1 to 7, a containing space is provided in the insertion portion body, the containing space is provided along an axial direction of the insertion portion body, and the endoscope instrument tube is provided in the containing space.

9. An endoscope handle comprising a handle body and an insertion portion (50), wherein the insertion portion (50) is the endoscope distal expandable insertion portion of claim 8, and the insertion portion (50) is disposed at a distal end of the handle body.

10. An endoscope comprising the endoscope handle of claim 9.