Instrument channel assembly structure and endoscope
By connecting the second port of the three-way connector to the proximal end of the insertion tube, medical devices can be directly inserted, solving the problems of cumbersome and costly endoscope assembly and achieving the effects of simplified assembly and cost reduction.
Patent Information
- Application Number
- CN202422470037.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-10-12
AI Technical Summary
Existing endoscopes suffer from cumbersome assembly and high costs when assembling the instrument channel.
By connecting the second port of the tee connector to the proximal end of the insertion tube, the medical device can be directly inserted into the insertion tube, eliminating the need for additional instrument tubing, simplifying the assembly process and reducing costs, while using a sleeve to protect the wire rope and adhesive for sealing and fixation.
It simplifies the endoscope assembly process, reduces production costs, and increases the space for the insertion tube, making instrument insertion smoother.
Smart Images
Figure CN223569287U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of endoscopes, and in particular to an instrument channel assembly structure and an endoscope. BACKGROUND
[0002] An endoscope is a medical instrument inserted into the human body to observe a lesion site, and is widely used in the medical field. The endoscope includes an operating handle and an insertion part inserted into the human body. The operating handle has an instrument tube for inserting a medical instrument.
[0003] In the related art, the instrument tube needs to be inserted into a three-way connector and assembled inside the insertion part of the endoscope, and extends to the distal end of the insertion part. When assembling the instrument channel, there is a problem of complicated assembly and high cost. CONTENT OF THE UTILITY MODEL
[0004] The present application provides an instrument channel assembly structure and an endoscope, at least to solve the problem of complicated assembly and high cost when assembling the instrument channel.
[0005] In the first aspect, the embodiments of the present application provide an instrument channel assembly structure for an endoscope, comprising: an insertion tube, the insertion tube having a channel passing through in the axial direction thereof; a three-way connector, the three-way connector being arranged in the operating handle and comprising a first port for inserting an instrument, a second port in communication with the insertion tube, and a third port in communication with a negative pressure channel; and an instrument channel, the instrument channel comprising a passageway in communication between the first port and the distal end of the insertion tube, the instrument channel being used for inserting an instrument.
[0006] In some embodiments of the present application, there is a reserved gap between the second port and the insertion tube, and the reserved gap is used for inserting a steel wire rope.
[0007] In some embodiments of the present application, the instrument channel assembly structure further comprises a sleeve, the sleeve being sleeved on the steel wire rope and being inserted into the insertion tube together with the steel wire rope, and the sleeve being fixed in the instrument channel assembly structure.
[0008] In some embodiments of the present application, the instrument channel assembly structure further comprises an adhesive, the insertion tube and the second port are sealed by the adhesive at the joint therebetween, and the sleeve is fixed at the joint by the adhesive.
[0009] In some embodiments of the present application, the distal end of the sleeve extends to the distal end of the passive bending section.
[0010] In some embodiments of the present application, the insertion tube proximal end has a first guide surface, the first guide surface at least including a bevel on the inside of the insertion tube and towards the second port, for guiding the sleeve to insert into the insertion tube; and / or, the second port has a second guide surface, the second guide surface at least including a bevel on the outside of the second port and towards the insertion tube, for guiding the sleeve to insert into the insertion tube.
[0011] In some embodiments of the present application, the instrument channel assembly further comprises a connecting tube, the connecting tube having a circumferential avoiding gap for avoiding the sleeve.
[0012] In some embodiments of the present application, the adhesive comprises a first glue for bonding the insertion tube and the second port; wherein: the adhesive further comprises a second glue connected with the first glue, the second glue filled between the connecting tube and the second port; and / or, the adhesive further comprises a third glue connected with the first glue, the third glue filled between the connecting tube and the insertion tube.
[0013] In some embodiments of the present application, the instrument channel assembly further comprises a sleeve, the sleeve sleeved outside the steel wire rope, the sleeve fixed in the instrument channel assembly; the insertion tube is connected with the second port, the insertion tube or the tee connector has a first opening hole for inserting the sleeve; or, the insertion tube is connected with the second port through a connecting piece, the connecting piece has a second opening hole for inserting the sleeve.
[0014] In the second aspect, the embodiments of the present application provide an endoscope, characterized in that the endoscope comprises the instrument channel assembly as described above.
[0015] The present application has the following beneficial effects:
[0016] In the embodiments of the present application, by directly connecting the second port of the tee connector with the insertion tube proximal end, the medical instrument can be directly inserted from the tee connector to the insertion tube, and then enters the human body through the channel existing in the insertion tube to perform the operation, which simplifies the method of setting another instrument pipeline in the insertion tube in the related art, reduces the assembly steps of the endoscope, reduces the complexity of the assembly process, optimizes the assembly process, meanwhile, the original instrument pipeline is omitted, which reduces the production cost of the endoscope, further, the omission of the instrument pipeline also increases the space in the insertion tube, so that the insertion of the instrument is more smooth. BRIEF DESCRIPTION OF DRAWINGS
[0017] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
[0018] In the drawings:
[0019] Figure 1 A structural schematic view of an instrument channel assembly disclosed for some embodiments of the present application;
[0020] Figure 2 Another structural schematic view of an instrument channel assembly disclosed for some embodiments of the present application;
[0021] Figure 3 A partial enlarged view of A portion disclosed for some embodiments of the present application;
[0022] Figure 4 A mating structural schematic view of an instrument channel assembly and a connecting tube disclosed for some embodiments of the present application;
[0023] Figure 5 A partial enlarged view of B portion disclosed for some embodiments of the present application;
[0024] Figure 6 A structural schematic view of a connecting tube disclosed for some embodiments of the present application;
[0025] Figure 7 A mating structural schematic view of a connecting tube and an insertion tube disclosed for some embodiments of the present application;
[0026] Figure 8 A partial enlarged view of C portion disclosed for some embodiments of the present application.
[0027] BRIEF DESCRIPTION OF DRAWINGS
[0028] 100 - insertion tube, 200 - three-way connector, 300 - operating handle,
[0029] 110 - reserved gap, 120 - sleeve, 130 - steel wire rope, 140 - connecting tube, 141 - avoiding notch, 142 - adhesive gap, 210 - first port, 220 - second port, 230 - third port. DETAILED DESCRIPTION
[0030] In order to make the purposes, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely below in combination with specific embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.
[0031] In order to facilitate the understanding of the embodiments provided by the present application, first, the related technologies will be introduced in combination with application scenarios.
[0032] An endoscope can be inserted into the human body to perform a diagnosis and treatment operation, and has an instrument tube for inserting a medical instrument on the operation handle 300 thereof.
[0033] In the related art, the instrument tube needs to be inserted into the three-way interface and assembled inside the endoscope insertion part, and extends to the distal end of the insertion part. When assembling the instrument channel, there are problems of complicated assembly and high cost.
[0034] In view of this, the present application proposes an instrument channel assembly structure and an endoscope. The following will be described in combination with Figures 1-8 The technical solutions disclosed by the embodiments of the present application will be described in detail.
[0035] In the embodiments of the present application, the endoscope includes a three-way connector 200 in the operation handle 300 thereof and an insertion tube 100 inserted into the human body.
[0036] Specifically, the insertion tube 100 has an axial through channel, which can be used to place a medical instrument, a pipeline of an optical assembly or other control members, etc. The insertion tube 100 extends to the inside of the operation handle 300 towards the proximal end and is in communication with the second port 220 of the three-way connector 200.
[0037] For example, the three-way connector 200 and the second port 220 can be in communication by manually aligning the openings thereof. Alternatively, the insertion tube 100 is fixed in the operation handle 300 by a limiting slot or the like, and is in communication with the opening of the second port 220 in an aligned manner.
[0038] In addition, the first port 210 of the three-way connector 200 is used for inserting an instrument from the operation handle 300, and the third port 230 can be used for communication with a negative pressure channel to perform a suction function.
[0039] In summary, the instrument can be inserted from the first port 210 of the three-way connector 200 into the operating handle 300, along the passage between the three-way connector 200, out of the second port 220 of the three-way connector 200 into the insertion tube 100, and along the channel inside the insertion tube 100 all the way to the distal end of the insertion tube 100, until it enters the human body, to perform the corresponding operation.
[0040] In the embodiments of the present application, by connecting the insertion tube 100 with the second port 220 of the three-way connector 200, the instrument can be directly inserted from the three-way connector 200 into the insertion tube 100 for operation in the human body. This simplifies the step of otherwise assembling an instrument pipeline in the insertion tube 100 and the three-way connector 200, and also omits the related components, reducing the labor cost and material cost of assembling the components. Furthermore, the omission of the additional instrument pipeline also enables the expansion of the insertion space inside the insertion tube 100, making it easier for the instrument to be inserted.
[0041] Since the steel wire 130 needs to be inserted into the insertion tube 100 of the endoscope to control the bending operation of the distal end of the insertion tube 100, as shown in Figure 2 , 3 , there is a reserved gap 110 between the second port 220 and the insertion tube 100, through which the steel wire 130 can be inserted into the insertion tube 100.
[0042] In some embodiments, since the steel wire 130 often needs to move axially along the insertion tube 100 when controlling the bending action of the distal end of the insertion tube 100. Therefore, in order to avoid interference with the movement trajectory of the steel wire 130 by the pipelines and instruments inserted in the insertion tube 100, or entanglement with the remaining pipelines during the movement of the steel wire 130, a sleeve 120 can be provided outside the steel wire 130.
[0043] As shown in Figure 2 , 3 , the sleeve 120 is provided outside the steel wire 130.
[0044] The sleeve 120 is fixed in the instrument channel assembly structure. For example, the sleeve 120 can be fixedly connected with the insertion tube 100, and / or the three-way connector 200, and / or the operating handle 300. The connection methods include but are not limited to cementing, welding, etc.
[0045] The sleeve 120 can be connected with the above-mentioned components only at some points, or can be connected in line with a certain component. The connection position and connection method of the sleeve 120 in the instrument channel assembly structure are not limited herein.
[0046] In some embodiments, the sleeve 120 can be provided outside all the steel wires 130, or provided outside part of the steel wires 130, which is not limited herein.
[0047] By setting the sleeve 120 fixed in the instrument channel assembly structure, the sleeve 120 is sleeved on the movable steel wire 130, and an independent and undisturbed movement space can be provided for the steel wire 130. In addition, since the steel wire 130 is thin and has small rigidity, it is easy to change its shape and path under external force. Therefore, the sleeve 120 can also protect the steel wire 130, so that the steel wire 130 can move along the path limited by the sleeve 120, and the steel wire 130 is protected from being hooked, entangled with the remaining components outside the sleeve 120, and affecting the bending operation of the distal end of the insertion part.
[0048] Further, since the passage of the insertion part and the three-way connector 200 can also be used for negative pressure suction, the entire pipeline needs to be sealed when the negative pressure suction function needs to be performed.
[0049] In some embodiments, the reserved gap 110 can be sealed by a shaft sleeve, a connecting pipe or the like sealing connector.
[0050] Specifically, the reserved gap 110 can be bonded by an adhesive. At this time, the adhesive can provide a sealing effect between the second port 220 and the insertion pipe 100 on the one hand, and can also provide a fixing effect for the sleeve 120 at the site on the other hand.
[0051] In order to further improve the bonding advantage of the adhesive, at the same time, the passage connected between the second port 220 and the insertion pipe 100 can also meet the requirements of instrument insertion, the port diameter of the second port 220 and the pipe opening diameter of the insertion pipe 100 should be similar. For example, the port diameter of the second port 220 can be less than or equal to the radial distance of the insertion pipe 100, and greater than 2 / 3 of the pipe opening diameter of the insertion pipe 100.
[0052] Since the adhesive itself is a soft colloid, the adhesive can fill the reserved gap 110 on the one hand, and the adhesive can extend to the inner peripheral wall of the insertion pipe 100 and the second port 220 on the other hand, and provide more bonding force to the connection site. At this time, the inside and outside are covered by the adhesive, and the adhesive can be completely connected in the circumferential direction and the axial direction to form bonding force in multiple directions to provide stable connection between the sleeve 120, the insertion pipe 100 and the second port 220. Further, the adhesive bonding does not need to provide additional sealing members, and from the production steps, assembly process and production cost, the adhesive bonding is more advantageous.
[0053] In some embodiments, the active bending section at the distal end of the insertion tube 100 needs to be bent. If the sleeve 120 extends to this active bending section, it will restrict the bending of the active bending section and affect its bending angle. Specifically, the larger the coverage area of the sleeve 120 over the wire rope 130, the more effective the limiting and protection of the wire rope 130. The specific length of the sleeve 120 can be determined based on requirements.
[0054] Therefore, the distal end of the sleeve 120 can extend to the distal end of the passive bending section. In this case, the sleeve 120 can both protect and limit the wire rope 130, and will not affect the normal bending of the active bending section.
[0055] like Figure 2 , 3 As shown, since the sleeve 120 needs to be inserted into the insertion tube 100, in order to minimize the reserved gap 110 between the second port 220 and the proximal end of the insertion tube 100, so as to facilitate the fixation and sealing of the three, and further facilitate the insertion of the sleeve 120 into the insertion tube 100, guide surfaces can be set at corresponding positions on the second port 220 and the proximal end of the insertion tube 100.
[0056] Specifically, a first guide surface (not shown in the figure) is provided at the proximal end of the insertion tube 100. The first guide surface includes an inclined surface located inside the insertion tube 100 and facing the second port 220. And / or a second guide surface (not shown in the figure) is provided at the second port 220. The second guide surface includes at least an inclined surface located outside the second port 220 and facing the insertion tube 100.
[0057] The inclination angle of the inclined surfaces included in the first and second guide surfaces can be set according to the angle at which the sleeve 120 is inserted into the insertion tube 100, and is not limited here.
[0058] By providing a first guide surface and a second guide surface at the proximal end of the insertion tube 100 and the second port 220, the insertion of the sleeve 120 into the insertion tube 100 can be guided, reducing the manpower and time required for alignment. Furthermore, by providing the first guide surface and the second guide surface, the bending curvature of the sleeve 120 can be reduced without changing the communication path between the second port 220 and the insertion tube 100, and the bending space occupied by the sleeve 120 during insertion can be further reduced, thus lowering the difficulty of bonding, sealing, and fixing.
[0059] In addition, such as Figure 4 , 5 As shown in Figure 6, a connecting tube 140 can also be installed in the reserved gap 110 between the second port 220 and the insertion tube 100. One end of the connecting tube 140 is connected to the insertion tube 100, and the other end is connected to the second port 220.
[0060] For example, the connecting tube 140 can be located at the inner periphery of the second port 220 and the insertion tube 100, or can be located at the outer periphery of the second port 220 and the insertion tube 100.
[0061] The connecting tube 140 further includes an avoiding gap 141. Figure 6 As shown, the avoiding gap 141 of the connecting tube 140 is used to avoid the insertion of the steel wire 130 and the sleeve 120 at the reserved gap 110.
[0062] Specifically, the avoiding gap 141 can be a gap left after the inclined surface is cut, or can be an opening through which the sleeve 120 is inserted. The avoiding gap 141 can be provided in any form and size.
[0063] Further, when the connecting tube 140, the second port 220 and the insertion tube 100 are bonded by using an adhesive, the adhesive can be attached to the inner periphery or the outer periphery of the connecting tube 140 and bonded to the second port 220 and / or the insertion tube 100. Figure 7 8 As shown, the adhesive includes a first glue for bonding the insertion tube 100 and the second port 220. The adhesive further includes a second glue and / or a third glue connected to the first glue. The second glue is filled in the bonding gap 142 between the connecting tube 140 and the second port 220, and the third glue is filled in the bonding gap 142 between the connecting tube 140 and the insertion tube 100. At this time, the bonding area of the adhesive to the second port 220 and the insertion tube 100 is greatly increased, the first glue, the second glue and / or the third glue are connected to each other to form a coherent whole, and the bonding force is also increased.
[0064] Specifically, by providing the connecting tube 140 to connect the second port 220 and the insertion tube 100, the alignment between the second port 220 and the insertion tube 100 can be facilitated, and the positional deviation between the second port 220 and the insertion tube 100 can be avoided, which affects the insertion of the instrument. On the other hand, the connecting tube can extend to both ends of the insertion tube 100 or the second port 220, and the extension part can be bonded to the insertion tube 100 and / or the second port 220, further increasing the bonding area between the three and the bonding force, so that the adhesive is connected on multiple surfaces, greatly improving the bonding stability between the three.
[0065] In some embodiments, the steel wire 130 is sleeved with the sleeve 120, and the sleeve 120 is fixed in the instrument channel assembly structure. The insertion tube 100 is directly connected to the second port 220, a first opening is provided on the insertion tube 100 or the second port 220, and the sleeve 120 and the steel wire 130 are inserted into the insertion tube 100 from the first opening.
[0066] At this time, the insertion tube 100 is in abutment with the second port 220, that is, there is no gap between the insertion tube 100 and the second port 220. The insertion tube 100 and the second port 220 can be connected together by cementing, welding, or the like. The insertion tube 100 and the second port 220 can also be connected by a connector, and the connector is provided with a second opening for inserting the sleeve 120.
[0067] Specifically, the sleeve 120 is also fixed in the instrument channel assembly structure, and the sleeve 120 is in sealed connection with the first opening or the second opening. For example, cementing, welding, or the like.
[0068] By the opening mode, the steel wire rope 130 and the sleeve 120 are inserted into the insertion tube 100, and it is not necessary to reserve the reserved gap 110 between the second port 220 and the insertion tube 100, and further, it is not necessary to seal the reserved gap 110, thereby simplifying the docking assembly step of the second port 220 and the insertion tube 100 and improving the assembly efficiency.
[0069] The embodiment of the present application also includes an endoscope, which comprises the instrument channel assembly structure described above.
[0070] The endoscope involved in the embodiment of the present application can be a bronchoscope, a nephroscopy, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasoscope, an oral mirror, a laryngoscope, a colposcope, a laparoscope, an arthroscope, and the like. The type of the endoscope is not specifically limited in the embodiment of the present application.
[0071] In the above embodiment, the differences between the various embodiments are mainly described, and the optimization features different between the various embodiments can be combined to form a more optimal embodiment as long as they are not contradictory. In view of the brevity of the writing, the details are not described here.
[0072] The above only describes the embodiments of the present application and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, and the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.
Claims
1. An instrument channel assembly for an endoscope, comprising: The application relates to an instrument channel assembly structure of an endoscope, which comprises: an insertion tube (100) with a channel passing through the tube in the axial direction; a three-way connector (200) arranged in an operating handle (300), which comprises a first port (210) for inserting an instrument, a second port (220) in communication with the insertion tube (100), and a third port (230) in communication with a negative pressure channel; an instrument channel, which comprises a passageway from the first port (210) to the distal end of the insertion tube (100), and is used for inserting an instrument.
2. The instrument channel assembly of claim 1, wherein, A reserved gap (110) is arranged between the second port (220) and the insertion tube (100), and is used for inserting a steel wire (130).
3. The instrument channel assembly of claim 2, wherein, The instrument channel assembly structure further comprises a sleeve (120), which is sleeved on the steel wire (130) and is inserted into the insertion tube (100) together with the steel wire (130), and the sleeve (120) is fixed in the instrument channel assembly structure.
4. The instrument channel assembly of claim 3, wherein, The instrument channel assembly structure further comprises an adhesive, which is used for bonding and sealing the joint between the insertion tube (100) and the second port (220), and the sleeve (120) is fixed at the joint by the adhesive.
5. The instrument channel assembly of claim 3, wherein, The distal end of the sleeve (120) extends to the distal end of the passive bending section of the endoscope.
6. The instrument channel assembly of claim 3, wherein, The proximal end of the insertion tube (100) is provided with a first guide surface, which at least comprises an inclined surface on the inner side of the insertion tube (100) and towards the second port (220), and is used for guiding the sleeve (120) to be inserted into the insertion tube (100); and / or the second port (220) is provided with a second guide surface, which at least comprises an inclined surface on the outer side of the second port (220) and towards the insertion tube (100), and is used for guiding the sleeve (120) to be inserted into the insertion tube (100).
7. The instrument channel assembly of claim 4, wherein, The instrument channel assembly structure further comprises a connecting tube (140), which is provided with a circumferential avoiding gap (141) for avoiding the sleeve (120).
8. The instrument channel assembly of claim 7, wherein, The adhesive comprises a first glue body, which is used for bonding the insertion tube (100) and the second port (220); wherein: the adhesive further comprises a second glue body connected with the first glue body, which is filled between the connecting tube (140) and the second port (220); and / or the adhesive further comprises a third glue body connected with the first glue body, which is filled between the connecting tube (140) and the insertion tube (100).
9. The instrument channel assembly of claim 1, wherein, The instrument channel assembly structure further comprises a sleeve (120), which is sleeved on the steel wire (130), and the sleeve (120) is fixed in the instrument channel assembly structure; The insertion tube (100) is connected with the second port (220), and the insertion tube (100) or the tee connector (200) is provided with a first opening hole for inserting the sleeve (120); Alternatively, the insertion tube (100) is connected with the second port (220) through a connecting piece, and the connecting piece is provided with a second opening hole for inserting the sleeve (120).
10. An endoscope characterized by comprising: The endoscope comprises the instrument channel assembly structure according to any one of claims 1-9.