Endoscope and insertion device therefor

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to an endoscope and an insertion device thereof. The insertion device comprises an insertion part and a shifting part, the shifting part is connected to the far end of the insertion part and is provided with two opposite contact parts, and the two opposite contact parts can be switched between a contraction form and an expansion form; in the contraction state, the two contact parts are folded relative to the insertion part, so that the insertion part can be inserted into a target body cavity; in the process of switching from the contraction state to the expansion state, the two contact parts at least comprise the process of being relatively away from each other in the first direction, the two contact parts can make contact with the wall of the body cavity, and an included angle is formed between the first direction and the axis of the insertion part. In the process that the contact parts are switched from the contraction state to the expansion state, the two contact parts comprise the process that the two contact parts are relatively far away from each other in the first direction, so that the width of the target body cavity can be enlarged, and the difficulty of inserting a guide tube and other medical instruments into the target body cavity is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of medical devices, and specifically relates to an endoscope and an insertion device thereof. Background Art

[0002] In the process of diagnosing and treating patients with endoscopes, it is usually necessary to insert a guide tube into the patient's body cavity through the instrument channel of the endoscope. In order to facilitate the guide tube to enter the target body cavity, the surgeon can operate the guide tube by manual rotation, swinging, linear propulsion, and reciprocating movement to reduce the resistance exerted by the target body cavity on the guide tube. However, in practice, when the surgeon encounters a narrow or closed target body cavity, it is not easy to insert the guide tube into the target body cavity even if the guide tube is operated by manual rotation, swinging, linear propulsion, and reciprocating movement. Summary of the invention

[0003] The purpose of the present application is to provide an endoscope and an insertion device thereof, which can solve the current problem that it is difficult to insert medical instruments such as guide tubes into a target body cavity.

[0004] In order to solve the above technical problems, this application is implemented as follows: In a first aspect, the present application provides an insertion device for use in an endoscope, comprising: Insertion part; A toggle member connected to the distal end of the insertion portion and having two contact portions arranged opposite to each other, wherein the two opposite contact portions can be switched between a retracted state and an expanded state; In the contracted state, the two contact portions are retracted relative to the insertion portion to facilitate insertion of the insertion portion into the target body cavity; During the process of switching from the contracted form to the expanded form, the two contact portions at least include a process of moving away from each other in a first direction, and the two contact portions can contact the body cavity wall, wherein the first direction forms an angle with the axis of the insertion portion.

[0005] In a second aspect, the present application provides an endoscope comprising the above-mentioned insertion device.

[0006] The beneficial technical effects of this application are as follows: When using the insertion device of the present application, the insertion part can be inserted into the human body and the toggle member can be switched from the contracted form to the expanded form, and in the process, the two contact parts are respectively pressed against the two sides of the target body cavity. In the process of switching from the contracted form to the expanded form, the two contact parts include a process of being relatively far away from each other in the first direction, that is, the distance between the two contact parts will increase, and the increase in the distance between the two can expand the width of the target body cavity, which can not only provide a larger space for the insertion of medical instruments such as guide tubes, but also reduce the positive pressure exerted by the target body cavity on medical instruments such as guide tubes when the medical instruments are inserted into the target body cavity, thereby reducing the friction force on medical instruments such as guide tubes, and further reducing the difficulty of inserting medical instruments such as guide tubes into the target body cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic structural diagram of an endoscope when the contact portion disclosed in an embodiment of the present application is in a retracted state; Figure 2 For this application Figure 1 The enlarged schematic diagram of point A in the middle; Figure 3 A schematic diagram of a portion of an endoscope when the contact portion disclosed in an embodiment of the present application is in an expanded state Figure 1 ; Figure 4 A schematic diagram of a portion of an endoscope when the contact portion disclosed in an embodiment of the present application is in an expanded state Figure 2 ; Figure 5 For this application Figure 4 The enlarged schematic diagram of point B in the middle; Figure 6 A partial schematic diagram of an endoscope when the contact portion disclosed in another embodiment of the present application is in an expanded state; Figure 7 A partial schematic diagram of an endoscope when the contact portion disclosed in another embodiment of the present application is in an expanded state; Figure 8 A schematic diagram of a process in which a contact portion disclosed in an embodiment of the present application switches from a contracted state to an expanded state; Fig. 9 This is a schematic diagram of the structure of the toggle member disclosed in the embodiment of the present application.

[0008] Description of reference numerals: 100, insertion part; 110, insertion body; 111, instrument channel; 112, sliding channel; 113, avoidance groove; 120, moving head; 121, accommodating groove; 200, toggle member; 210, contact part; 220, operating part; 310, sliding rod; 320, inflatable airbag; 330, rigid plate; 340, sleeve; 400, operating handle. DETAILED DESCRIPTION

[0009] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0010] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0011] The endoscope and the insertion device thereof provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in combination with the accompanying drawings.

[0012] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of the endoscope and its components relative to the user in the use environment, 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".

[0013] like Figures 1 to 9 As shown, an embodiment of the present application discloses an insertion device, which is applied to an endoscope, and includes an insertion portion 100 and a toggle member 200. The toggle member 200 is connected to the distal end of the insertion portion 100 and has two contact portions 210 arranged opposite to each other. The two opposite contact portions 210 can switch between a contracted form and an expanded form.

[0014] In the contracted state, the two contact portions 210 are retracted relative to the insertion portion 100 , and the distance between the two contact portions 210 is relatively small, so as to facilitate the insertion of the insertion portion 100 into the target body cavity.

[0015] During the switching process from the contracted state to the expanded state, the two contact portions 210 at least include Figure 2 The two contact portions 210 can contact the body cavity wall, wherein the first direction forms an angle with the axis of the insertion portion 100, and the angle here can be a right angle, an obtuse angle or an acute angle.

[0016] When using the insertion device of the present application, the insertion portion 100 can be inserted into the human body and the toggle member 200 can be switched from the contracted form to the expanded form, and in the process, the two contact portions 210 are respectively pressed against the two sides of the target body cavity. In the process of switching from the contracted form to the expanded form, the two contact portions 210 include a process of being relatively separated in the first direction, that is, the distance between the two contact portions 210 will increase, and the increase in the distance between the two can expand the width of the target body cavity, which can not only provide a larger space for the insertion of medical instruments such as guide tubes, but also reduce the positive pressure exerted by the target body cavity on medical instruments such as guide tubes when the medical instruments are inserted into the target body cavity, thereby reducing the friction force on medical instruments such as guide tubes, and further reducing the difficulty of inserting medical instruments such as guide tubes into the target body cavity.

[0017] In an alternative embodiment, see Figure 3 and Figure 4 , the contact portion 210 is a toggle rope. Specifically, when an axial compression force is applied to the toggle rope, it can be switched from a contracted state to an expanded state. In the expanded state, at least part of the toggle rope radially extends beyond the insertion portion 100, that is, at least part of the toggle rope is located on one side of the radial direction of the insertion portion 100, so that the insertion device can expand the width of the target body cavity on one side of its own radial direction. It should be noted that the toggle rope here has a certain rigidity, so that the toggle rope can toggle the body cavity wall. Exemplarily, the shape of the cross section of the toggle rope can be circular, polygonal, elliptical, etc., and the present application does not limit the shape of the toggle rope.

[0018] The distal ends of the toggle ropes are connected to the insertion portion 100. During the process of switching from the contracted state to the expanded state, the two contact portions 210 also include a second direction ( Figure 2 The second direction forms an angle with the first direction and with the axis of the insertion portion 100, and the angle here can be a right angle, an obtuse angle or an acute angle.

[0019] The contact portion 210 in this embodiment is a toggle cord. When an axial compression force is applied to the toggle cord, the toggle cord switches from a contracted state to an expanded state. During this process, the toggle cord can bulge toward the second direction. Therefore, when the toggle cord contacts the body cavity wall, the bulging toggle cord can drive the insertion portion 100 further away from the target body cavity, thereby increasing the distance between the insertion portion 100 and the target body cavity. This not only allows the camera module in the insertion portion 100 to have a sufficiently large visual distance, but also provides a larger space for the entry of medical instruments. It can be seen that the toggle cord of this embodiment can not only expand the width of the target body cavity, but also allow the camera module in the insertion portion 100 to have a sufficiently large visual distance, thereby achieving the purpose of using one object for two purposes.

[0020] In some embodiments, in the expanded form, the contact portion 210 may not protrude radially from the insertion portion 100. In this case, the contact portion 210 protrudes axially from the insertion portion 100 and is located distally of the insertion portion 100, thereby being able to open a target body cavity located axially distally of the insertion device.

[0021] In some embodiments, see Fig. 9 The toggle member 200 also includes an operating portion 220, the distal end of the operating portion 220 is connected to two toggle ropes, and the proximal end of the operating portion 220 can extend to the operating handle 400 of the endoscope. The movement of the toggle rope can be controlled by manually pushing or pulling the toggle rope to switch between a retracted state and an expanded state.

[0022] In an alternative embodiment, see Figure 2 In the contracted state, along the axial direction of the insertion portion 100, the orthographic projections of each toggle cord are all located within the orthographic projection of the insertion portion 100, which can reduce the radial dimension of the insertion device, thereby making it easier to insert the insertion device into the human body. Of course, in the contracted state, the toggle cord can also be located on one side of the insertion portion 100 in the radial direction, in which case, in the axial direction of the insertion portion 100, the orthographic projection of the toggle cord is located outside the orthographic projection of the insertion portion 100.

[0023] In an optional embodiment, the insertion portion 100 includes an insertion body 110 and a moving head 120, the moving head 120 is located on the distal side of the insertion body 110 and can move axially relative to the insertion body 110 along the insertion portion 100, the proximal end of each toggle rope is passed through the insertion body 110, and the distal end of each toggle rope is connected to the moving head 120.

[0024] In this embodiment, the moving head 120 is controlled to move in a direction away from the insertion body 110 to drive the toggle cord to move relative to the insertion portion 100. During this process, part of the toggle cord that is inserted into the insertion portion 100 will be pulled out of the insertion portion 100, so that part of the toggle cord is located at the far side of the insertion portion 100 ( Figure 8); and then applying an axial compressive force to the toggle ropes can cause the two toggle ropes to move in opposite directions and cause the two toggle ropes to bulge toward one side in the radial direction of the insertion portion 100 ( Figure 8 After the operation is completed, the proximal end of the toggle rope can be directly pulled to retract part of the toggle rope into the insertion body 110, and the moving head 120 is driven to move toward the insertion body 110, so that the moving head 120 is reset.

[0025] It should be noted that the axial compression force applied to the toggle rope here can be: fixing the position of the toggle rope and controlling the moving head 120 to move in a direction close to the insertion body 110; it can also be: fixing the position of the moving head 120 and controlling the toggle rope to move in a direction close to the distal end of the insertion body 110; it can also be: while the toggle rope moves in a direction close to the distal end of the insertion body 110, the moving head 120 is controlled to move in a direction close to the insertion body 110.

[0026] It can be seen that the insertion part 100 of this embodiment is divided into a separate insertion body 110 and a moving head 120. When the two toggle ropes need to move in opposite directions and bulge, not only the toggle ropes can be pushed, but also the moving head 120 can be pulled, which can increase the compression degree of the toggle ropes, thereby increasing the bulge degree of the toggle ropes and the distance of the opposite movement, so that the camera module has a larger visual distance and better opens the target body cavity. Of course, the insertion part 100 can also be integrally formed, and this application is not limited to this.

[0027] In an alternative embodiment, see Figures 4 to 6 The proximal surface of the moving head 120 is provided with a receiving groove 121, and the receiving groove 121 extends to the outer peripheral surface of the moving head 120, and the distal ends of each toggle rope are located in the receiving groove 121. In this embodiment, the distal end of the toggle rope is located in the receiving groove 121, that is, the toggle rope invades the interior of the receiving groove 121, which can reduce the distance that the toggle rope protrudes from the proximal surface of the moving head 120, thereby reducing the distance between the insertion portion 100 and the moving head 120, so as to reduce the axial length of the insertion device, thereby facilitating the insertion of the insertion device into the human body. Of course, the distal end of the toggle rope can also be directly connected to the proximal surface of the moving head 120, and this application is not limited to this.

[0028] In an alternative embodiment, see Figure 8 In the second and third figures, the depth of the receiving groove 121 gradually increases in a direction extending from one end of the receiving groove 121 to the outer peripheral surface of the moving head 120 to the other end.

[0029] The depth of the receiving groove 121 of this embodiment changes gradually, so the bottom wall of the receiving groove 121 is relatively inclined relative to the proximal end surface of the moving head 120, which can increase the length of the bottom wall of the receiving groove 121, thereby increasing the contact length between the toggle rope and the receiving groove 121, and the relatively inclined bottom wall of the receiving groove 121 can constrain the distal end of the toggle rope to be inclined toward the insertion portion 100 (such as Figure 8 In the third figure in the figure), when controlling the moving head 120 to move toward the insertion part 100, it is more conducive to maintaining the shape of the toggle rope, thereby making it easier to expand the width of the target body cavity.

[0030] And / or, in an optional embodiment, each toggle rope cooperates with the inner wall of the receiving groove 121 to limit the position in the width direction of the receiving groove 121, so that when the toggle rope is subjected to axial extrusion force, the inner wall of the receiving groove 121 can limit the movement of the toggle rope along the width direction of the receiving groove 121, thereby making it easier for the toggle rope to move in a preset direction.

[0031] Optionally, the number of the receiving grooves 121 can be one or two. When the number of the receiving grooves 121 is one, both toggle ropes are located in the receiving groove 121, and one of the toggle ropes is indirectly engaged with the inner wall of the receiving groove 121 in the above-mentioned width direction upper limit through the other toggle rope; when the number of the receiving grooves 121 is two, each toggle rope is located in each receiving groove 121 respectively.

[0032] In an optional embodiment, the rigidity of the portion of the toggle rope that matches the receiving groove 121 is greater than the rigidity of other portions of the toggle rope. In this embodiment, the rigidity of the portion of the toggle rope that matches the receiving groove 121 is greater, and the greater the rigidity, the less likely it is to deform, which can prevent the distal end of the toggle rope from deforming under force when the toggle rope is subjected to axial compression force, thereby affecting the overall shape and opening force of the toggle rope.

[0033] Exemplarily, the diameter of the portion of the toggle rope that cooperates with the receiving groove 121 can be made larger than the diameter of other portions of the toggle rope, so that the rigidity of the portion of the toggle rope that cooperates with the receiving groove 121 is greater; for example, a sleeve 340 can be sleeved on the distal end of the toggle rope to make the diameter of the portion of the toggle rope that cooperates with the receiving groove 121 larger.

[0034] And / or, in an optional embodiment, in the retracted state, the proximal surface of the moving head 120 fits with the distal surface of the insertion body 110, which can further reduce the axial length of the insertion device and facilitate the insertion of the insertion device into the human body. Specifically, a relief groove 113 can be provided on the distal surface of the insertion body 110, so that a part of the toggle rope is accommodated in the relief groove 113, thereby making the insertion body 110 and the moving head 120 fit together.

[0035] In an optional embodiment, the insertion portion 100 is provided with an instrument channel 111 and a sliding channel 112 at intervals, and a sliding rod 310 is connected to the moving head 120, and the sliding rod 310 is slidably matched with the sliding channel 112. The extension direction of the sliding channel 112 here can be parallel to the axial direction of the insertion portion 100. It should be noted that the proximal end of the sliding rod 310 here can extend to the operating handle 400 of the endoscope, and the movement of the sliding rod 310 can be controlled by manually pushing or pulling the sliding rod 310.

[0036] An inflatable airbag 320 is provided on the sliding rod 310, and a gas channel connected to the inflatable airbag 320 is provided inside the sliding rod 310. When the inflatable airbag 320 is in the expanded state and the inflatable airbag 320 is in the filled state, the inflatable airbag 320 is located on the distal side of the insertion body 110 and toward the instrument channel 111 to guide the medical device passing through the instrument channel 111 to the side where the toggle rope is located.

[0037] The specific working process is as follows: when the two relative contact parts 210 are in a contracted state, the sliding rod 310 is located in the sliding channel 112, and the inflatable airbag 320 is in a deflated state and is thus accommodated in the sliding channel 112; the sliding rod 310 is pushed to move the moving head 120 in a direction away from the insertion body 110, and the moving head 120 is used to pull the part of the toggle rope located in the insertion body 110 out of the insertion body 110; then an axial extrusion force is applied to the toggle rope to deform the toggle rope in a preset direction, thereby expanding the width of the target body cavity; gas is then introduced into the gas channel to make the inflatable airbag 320 in a filled state, and the filled inflatable airbag 320 faces the instrument channel 111, at which time the medical device passing through the instrument channel 111 will contact the inflatable airbag 320, and the moving direction will be changed by the inflatable airbag 320, so that it extends to the side where the toggle rope is located, so as to facilitate the insertion of the medical device into the target body cavity.

[0038] In an optional embodiment, a rigid plate 330 is hinged on the sliding rod 310 , and the inflatable airbag 320 is located below the rigid plate 330 . The inflatable airbag 320 can drive the rigid plate 330 to rotate toward the instrument channel 111 .

[0039] In this embodiment, when the inflatable airbag 320 is in a deflated state, the angle between the rigid plate 330 and the axis of the sliding rod 310 is small, and the size of the whole formed by the rigid plate 330 and the sliding rod 310 is small, so that it can be accommodated in the sliding channel 112; after the rigid plate 330 extends out of the sliding channel 112 along with the sliding rod 310, the inflatable airbag 320 will lift the rigid plate 330 during the filling process, so that the rigid plate 330 rotates relative to the sliding rod 310, and the angle between the rigid plate 330 and the sliding rod 310 will increase, so that the rigid plate 330 is directed toward the instrument channel 111. At this time, the medical device passing through the instrument channel 111 will contact the rigid plate 330 and its moving direction will be changed by the rigid plate 330, and the rigid plate 330 has a large rigidity, which can enhance the guiding effect on the medical device.

[0040] The embodiment of the present application also discloses an endoscope, including the above-mentioned insertion device, so that the endoscope has the beneficial effects of the above-mentioned insertion device, which will not be repeated here. Optionally, the endoscope also includes an operating handle 400, the distal end of the operating handle 400 is connected to the proximal end of the insertion part 100, and the bending of the insertion part 100 can be controlled by controlling the operating handle 400.

[0041] The endoscope referred to in the embodiments of the present application may be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiments of the present application do not impose any specific restrictions on the type of endoscope.

[0042] The above embodiments of the present application focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here. The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present application, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present application and the claims, all of which are within the protection of the present application.

Claims

1. An insertion device, applied to an endoscope, characterized in that: include: Insertion portion (100); A toggle member (200) connected to the distal end of the insertion portion (100) and having two contact portions (210) arranged opposite to each other, wherein the two opposite contact portions (210) can be switched between a contracted state and an expanded state; In the contracted state, the two contact portions (210) are retracted relative to the insertion portion (100) to facilitate the insertion of the insertion portion (100) into the target body cavity; During the process of switching from the contracted form to the expanded form, the two contact portions (210) at least include a process of moving away from each other in a first direction, and the two contact portions (210) can contact the body cavity wall, wherein the first direction forms an angle with the axis of the insertion portion (100).

2. The insertion device according to claim 1, characterized in that The contact portion (210) is a toggle cord, and the distal end of each toggle cord is connected to the insertion portion (100); During the process of switching from the contracted form to the expanded form, the two contact portions (210) further include a process of expanding to one side in a second direction relative to the insertion portion (100), wherein the second direction forms an angle with the first direction and an angle with the axis of the insertion portion (100).

3. The insertion device according to claim 2, characterized in that In the contracted state, along the axial direction of the insertion portion (100), the orthographic projections of the toggle cords are all located within the orthographic projection of the insertion portion (100).

4. The insertion device according to claim 3, characterized in that The insertion portion (100) comprises an insertion body (110) and a moving head (120), wherein the moving head (120) is located at the distal side of the insertion body (110) and can move relative to the insertion body (110) along the axial direction of the insertion portion (100), the proximal end of each of the driving ropes is inserted into the insertion body (110), and the distal end of each of the driving ropes is connected to the moving head (120).

5. The insertion device according to claim 4, characterized in that A receiving groove (121) is provided on the proximal end surface of the moving head (120), and the receiving groove (121) extends to the outer peripheral surface of the moving head (120), and the distal end of each of the toggling ropes is located in the receiving groove (121).

6. The insertion device according to claim 5, characterized in that In a direction extending from one end of the accommodating groove (121) to the outer peripheral surface of the moving head (120) to the other end, the depth of the accommodating groove (121) gradually increases; and / or, Each of the toggle ropes cooperates with the inner wall of the receiving groove (121) in an upper limit position in the width direction of the receiving groove (121).

7. The insertion device according to claim 5, characterized in that The rigidity of the portion of the toggle rope that cooperates with the accommodating groove (121) is greater than the rigidity of other portions of the toggle rope; and / or, In the contracted state, the proximal surface of the moving head (120) fits the distal surface of the insertion body (110).

8. The insertion device according to claim 4, characterized in that An instrument channel (111) and a sliding channel (112) are provided at intervals in the insertion portion (100); a sliding rod (310) is connected to the moving head (120); and the sliding rod (310) is slidably matched with the sliding channel (112); An inflatable airbag (320) is provided on the sliding rod (310), and a gas channel connected to the inflatable airbag (320) is provided in the sliding rod (310). When the inflatable airbag (320) is in the expanded state and the inflatable airbag (320) is in an inflated state, the inflatable airbag (320) is located at the distal side of the insertion body (110) and toward the instrument channel (111) to guide the medical device passing through the instrument channel (111) to the side where the toggle rope is located.

9. The insertion device according to claim 8, characterized in that A rigid plate (330) is hingedly connected to the sliding rod (310), and the inflatable airbag (320) is located below the rigid plate (330). The inflatable airbag (320) can drive the rigid plate (330) to rotate toward the instrument channel (111).

10. An endoscope, characterized in that: Comprising an insertion device as claimed in any one of claims 1 to 9.

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