Endoscope head end and endoscope
By designing a flexible, telescopic hose and a sidewall clearance mechanism at the endoscope tip, the problem of fixing the instrument channel diameter was solved, enabling the use of instruments of different sizes and improving the flexibility and precision of the surgery.
Patent Information
- Application Number
- CN202422899067.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-11-26
AI Technical Summary
The fixed diameter of the instrument channel in existing endoscope designs limits the use of larger diameter instruments, affecting surgical flexibility and applicability.
Design an endoscope endpiece that uses a flexible, extendable hose and a sidewall clearance mechanism installed in the instrument channel. The diameter of the instrument channel can be changed through a C-shaped retainer and clearance mechanism to meet the needs of instruments of different sizes.
It enables flexible adjustment of the instrument channel diameter, reduces instrument movement within the channel, and improves operational precision and surgical flexibility.
Smart Images
Figure CN223682494U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of endoscope, especially endoscope head and endoscope. BACKGROUND
[0002] An endoscope is a device widely used in medical and other fields, which allows visual inspection of areas that are difficult to observe directly. The endoscope usually includes an elongated insertion part with a relatively small diameter, which extends from a handle to a distal end and is equipped with a head at the distal end. For example, the head of a nephroscopy usually contains a lens seat, and a camera, a light source and an instrument channel mounted on the lens seat. In order to alleviate the discomfort of the patient during the insertion of the endoscope and facilitate the insertion of the endoscope into the human body, the radial size of the head of the endoscope is designed to be as small as possible, which greatly limits the selection and layout of the camera, the light source and the instrument channel.
[0003] However, in the existing design of the endoscope, the caliber of the instrument channel is usually fixed. This means that only instruments with a diameter smaller than the caliber of the channel can be used during surgery, such as guide wires. This limits the use of guide wires with larger diameters, thereby limiting the flexibility and scope of application of the surgery to some extent. Therefore, the existing design of the endoscope has limitations when using instruments with larger diameters, which affects the diversity and flexibility of clinical surgery. SUMMARY
[0004] The purpose of the utility model is to provide an endoscope head and an endoscope to meet the use of instruments of different thicknesses, reduce the shaking of instruments in the instrument channel, and ensure the accuracy of operation.
[0005] In order to achieve the above purpose, the technical scheme of the utility model provides an endoscope head, which comprises an outer tube, a lens holder passing through the front end of the outer tube is matched and installed in the outer tube, a first mounting hole for installing an image module is arranged on the front end face of the lens holder, an instrument channel for the passage of instruments is further arranged on the lens holder, a flexible hose that can elastically expand in the radial direction and has a sealed connection between the tail end outer wall and the lens holder is installed in the instrument channel, and an avoidance mechanism for avoiding the expansion of the flexible hose is arranged on the side wall of the instrument channel.
[0006] Preferably, a C-shaped clasp that can elastically deform is arranged between the flexible hose and the instrument channel.
[0007] Preferably, the C-shaped clasp comprises an inner ring with a C-shaped depth inside, an outer ring with a C shape is sleeved on the outer wall of the inner ring, and extension arms are extended from the opposite ends of the outer ring along the axial direction of the outer ring.
[0008] Preferably, the avoiding mechanism is a notch provided on the sidewall of the instrument channel corresponding to the front end of the lens holder.
[0009] Preferably, the lens holder comprises a front holder matched with the tail of the outer tube and a rear holder connected with the tail end of the front holder and installed in the outer tube, and the avoiding mechanism is provided on the front holder or the front holder and the rear holder.
[0010] Preferably, the image module comprises an illuminating light source and a camera.
[0011] Preferably, the front end surface of the instrument channel is in an arc structure from the end adjacent to the first mounting hole to the end away from the first mounting hole.
[0012] Preferably, the tail end of the hose is connected with an instrument cannula for instrument passing.
[0013] Preferably, the edge of the front end surface of the lens holder is chamfered.
[0014] The utility model discloses a technical scheme further provides an endoscope, is equipped with the endoscope head of preceding.
[0015] Summarized above, the utility model includes following beneficial technical effect:
[0016] The utility model discloses can pass through the hose and the avoiding mechanism on the sidewall of instrument channel can make the caliber of instrument channel produce change, thereby satisfying the use of different thickness instrument, and the elastic deformation of hose just makes when using thinner instrument, and the instrument in the instrument channel shakes and influences the precision of operation because of the caliber of instrument channel is too big. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the structure schematic diagram of the utility model embodiment;
[0018] Figure 2 It is the structure schematic diagram between the lens holder and the outer tube of the utility model embodiment;
[0019] Figure 3 It is the structure schematic diagram of the lens holder of the utility model embodiment;
[0020] Figure 4 It is the exploded structure schematic diagram of the lens holder of the utility model embodiment.
[0021] Reference signs: 1, outer tube;2, lens holder;20, first mounting hole;21, front holder;22, rear holder;3, image module;4, instrument channel;5, hose;6, avoiding mechanism;7, C type snap ring;70, inner ring;71, outer ring;72, extension arm;8, instrument cannula. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0023] The utility model discloses an endoscope head end, including the outer tube 1, the outer tube 1 is matched and installed with the lens holder 2 that goes out the front end of the outer tube 1 in front part, be provided with the first mounting hole 20 for installing image module 3 on the front end face of lens holder 2, still be provided with the instrument channel 4 for the instrument to pass through on lens holder 2, install the flexible hose 5 that can elastically extend in the radial direction and the tail end outer wall is sealedly connected with lens holder 2 in instrument channel 4, be provided with the avoidance mechanism 6 for avoiding the expansion of flexible hose 5 on the lateral wall of instrument channel 4.
[0024] As preferred, a C-shaped clasp 7 that can elastically deform is arranged between the flexible hose 5 and the instrument channel 4.
[0025] As preferred, the C-shaped clasp 7 comprises an inner ring 70 in the form of a C with a certain depth inside, an outer ring 71 in the form of a C that is sleeved on the outer wall of the inner ring 70, and an extension arm 72 extending from opposite ends of the outer ring 71 along the axial line direction of the outer ring 71.
[0026] As preferred, the avoidance mechanism 6 is a notch arranged on the lateral wall of the instrument channel 4 corresponding to the front end of the lens holder 2.
[0027] As preferred, the lens holder 2 comprises a front holder 21 that is matched and installed inside the outer tube 1 and a rear holder 22 that is installed inside the outer tube 1 and connected to the tail end of the front holder 21, and the avoidance mechanism 6 is arranged on the front holder 21 or on the front holder 21 and the rear holder 22.
[0028] As preferred, the image module 3 comprises an illuminating light source and a camera.
[0029] As preferred, the front end face of the instrument channel 4 is in an arc structure from one end adjacent to the first mounting hole 20 to one end away from the first mounting hole 20.
[0030] As preferred, the tail end of the flexible hose 5 is connected with an instrument cannula 8 for the instrument to pass through.
[0031] As preferred, the edge of the front end face of the lens holder 2 is chamfered.
[0032] Specifically, the utility model discloses an endoscope head end, including the outer tube 1, the outer tube 1 is matched and installed with the lens holder 2 that goes out the front end of the outer tube 1 in front part, be provided with the first mounting hole 20 for installing image module 3 on the front end face of lens holder 2, still be provided with the instrument channel 4 for the instrument to pass through on lens holder 2, install the flexible hose 5 that can elastically extend in the radial direction and the tail end outer wall is sealedly connected with lens holder 2 in instrument channel 4, be provided with the avoidance mechanism 6 for avoiding the expansion of flexible hose 5 on the lateral wall of instrument channel 4. Figures 1 to 4As shown in the figure, an endoscope head comprises an outer tube 1, which is hollow inside in a cylindrical structure. A lens holder 2 is fitted inside the outer tube 1, with the front part of the lens holder 2 extending out of the front end of the outer tube 1. In other words, the tail part of the lens holder 2 is installed inside the outer tube 1, and the front part of the lens holder 2 is outside the outer tube 1. The front part of the lens holder 2 is not thicker than the outer diameter of the outer tube 1. A first mounting hole 20 is provided on the front end face of the lens holder 2 for mounting an image module 3. The image module 3 is mounted in the first mounting hole 20, and then connected electrically with the control end of the endoscope by using a wire. At this time, the first mounting hole 20 can be a blind hole or a through hole along the axial direction of the outer tube 1. When it is a blind hole, a through hole for the wire to pass through is provided on the bottom or the side wall of the blind hole.
[0033] For the image module 3, it comprises an illuminating light source and a camera. The camera is used to collect and transmit images, and the illuminating light source is used to provide illumination for the camera. For example, chambers are provided on both sides of the camera, and then the illuminating light source, a cold light LED lamp or a light guide optical fiber is sealed in the chambers by using optical fiber glue. Finally, the camera and the illuminating light source are integrated together, which is convenient for the installation of the head end image module 3.
[0034] A device channel 4 for the device to pass through is further provided on the lens holder 2. A flexible tube 5, which can be elastically expanded and contracted in the radial direction and has a tail end outer wall sealingly connected with the lens holder 2, is installed in the device channel 4. An avoiding mechanism 6 for avoiding the expansion of the flexible tube 5 is provided on the side wall of the device channel 4. The device channel 4 is provided on the lens holder 2 along the axial direction of the outer tube 1 and is spaced apart from the first mounting hole 20. The device channel 4 is a through hole penetrating through the front end and the tail end of the lens holder 2. The flexible tube 5 is made of a rubber tube, which can be expanded or contracted in the radial direction in the device channel 4. If the guide wire inserted into the flexible tube 5 has a large diameter, the guide wire will expand the flexible tube 5 in the radial direction. The flexible tube 5 is expanded in the radial direction, and the caliber of the flexible tube 5 is increased. The avoiding mechanism 6 on the side wall of the device channel 4 will not hinder the expansion of the flexible tube 5. In this way, the guide wire with different diameters can be used in the limited space. The tail end outer wall of the flexible tube 5 is sealingly connected with the tail end inner wall of the device channel 4 on the lens holder 2. In this way, foreign matters are prevented from entering the endoscope head from between the outer wall of the flexible tube 5 and the device channel 4, and then entering the insertion tube of the endoscope connected to the tail part of the head end.
[0035] Further improvements, such as Figures 1 to 4As shown in the figure, a C-shaped clasp 7 which can be elastically deformed is arranged between the hose 5 and the instrument channel 4, the C-shaped clasp 7 is arranged on the inner wall of the instrument channel 4, the hose 5 is sleeved on the ring of the C-shaped clasp 7, the C-shaped clasp 7 makes the hose 5 have certain mechanical strength, keeps the hose 5 in a smooth state, avoids the hose 5 from adhering together to affect the passing of the instrument; the C-shaped clasp 7 comprises an inner ring 70 which is C-shaped and has a certain depth inside, and an outer ring 71 which is C-shaped and is sleeved on the outer wall of the inner ring 70, the inner ring 70 is sleeved on the outer wall of the hose 5, the length along the axis of the lens holder 2 is the depth, the inner ring 70 has a certain depth which increases the contact surface between the inner ring 70 and the hose 5, ensures that the hose 5 can be uniformly stressed at different positions along the axis of the instrument channel 4, the outer ring 71 increases the elasticity of the inner ring 70, keeps the strength of the structure of the hose 5, the opposite ends of the outer ring 71 extend in the direction of the axis of the outer ring 71, that is, the outer ring 71 extends the extension arms 72 in the axial direction at the two ends of the opening, the extension arms 72 can extend in the same direction or different directions, which makes the force acting on the two ends of the opening of the inner ring 70 more uniform.
[0036] Further improvement, as shown in Figures 1 to 4 As shown in the figure, the avoiding mechanism 6 is a notch arranged on the side wall of the instrument channel 4 corresponding to the front end of the lens holder 2, that is, the opening direction of the notch is towards the front of the lens holder 2, the notch can be a U-shaped or V-shaped notch, when the hose 5 is stressed to open inside, the hose 5 will enter the notch to make the caliber of the hose 5 larger, thereby meeting the use of a guide wire with a larger diameter.
[0037] Further improvement, as shown in Figure 3 And Figure 4 As shown in the figure, the lens holder 2 comprises a front holder 21 which is matched and installed at the tail of the outer tube 1, and a rear holder 22 which is installed in the outer tube 1 and connected at the tail end of the front holder 21, the front holder 21 and the rear holder 22 are clamped and connected, which facilitates the installation of the image module 3 and the hose 5 on the lens holder 2, the avoiding mechanism 6 is arranged on the front holder 21 or the front holder 21 and the rear holder 22, that is, the avoiding mechanism 6 is arranged on the front holder 21 alone, at this time the part of the instrument channel 4 corresponding to the front holder 21 is arranged in a C-shaped structure, the front holder 21 and the rear holder 22 are connected to form a notch with an opening towards the front, which constitutes the avoiding mechanism 6; or the avoiding mechanism 6 is arranged on the front holder 21 and the rear holder 22 at the same time, the part of the instrument channel 4 corresponding to the front holder 21 is arranged in a C-shaped structure, the part of the instrument channel 4 corresponding to the rear holder 22 is arranged with a rear notch at the position adjacent to the front holder 21, the rear notch is aligned with the open part of the C-shaped structure of the front holder 21, thereby forming a notch with a larger depth relative to the former mode, that is, the depth of the avoiding mechanism 6 is larger, which is more beneficial to the overall expansion and contraction of the hose 5.
[0038] Further improvement, asFigures 1 to 4 As shown in the figure, the front end face of the instrument channel 4 is arc-shaped from the end adjacent to the first mounting hole 20 to the end away from the first mounting hole 20, which reduces the surface area of the head end face, thereby facilitating the insertion of the head end into the human body. The edge of the front end face of the lens holder 2 is rounded, and the rounded structure does not have protruding edges, thereby reducing the resistance when the head end is inserted into the human body.
[0039] Further improvements, such as Figure 1 As shown in the figure, the tail end of the hose 5 is connected with an instrument insertion tube 8 for the passage of instruments, which is used to be arranged in the insertion tube of the endoscope, has a fixed pipe diameter, and the pipe diameter is greater than the caliber of the hose 5, thereby facilitating the passage of instruments into the human body through the instrument insertion tube 8.
[0040] The utility model embodiment further discloses an endoscope comprising the endoscope head end as described above, which comprises an operating handle and an insertion tube (not shown in the figure) as the existing endoscope, and the endoscope head end is installed at the front end of the insertion tube, and the image module 3 of the endoscope head end is electrically connected with the operating handle through the lead wire arranged in the insertion tube, and a pipeline is further arranged in the insertion tube and is communicated with the instrument channel 4, which is used as the passage of instruments in the endoscope. When the instrument insertion tube 8 is connected with the hose 5 of the endoscope head end, it is not necessary to arrange the pipeline in the insertion tube of the endoscope as the passage of instruments, and the instrument insertion tube 8 can be directly sleeved in the insertion tube.
[0041] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. that is made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.
Claims
1. An endoscope tip, characterized by, The utility model provides an endoscope lens holder, which comprises an outer tube (1), a lens holder (2) matchedly installed in the outer tube (1) and protruding from the front end of the outer tube (1), a first mounting hole (20) for mounting an image module (3) arranged on the front end face of the lens holder (2), an instrument channel (4) for passing through an instrument arranged on the lens holder (2), a flexible hose (5) elastically expandable in the radial direction and having a tail end outer wall sealingly connected to the lens holder (2) arranged in the instrument channel (4), and an avoiding mechanism (6) arranged on the side wall of the instrument channel (4) for avoiding expansion of the flexible hose (5).
2. The endoscope tip of claim 1, wherein The flexible hose (5) and the instrument channel (4) are provided with a C-shaped clasp (7) elastically deformable.
3. The endoscope tip of claim 2, wherein The C-shaped clasp (7) comprises an inner ring (70) having a C shape with a certain depth arranged in the inside, and an outer ring (71) having a C shape and sleeved on the outer wall of the inner ring (70), wherein the opposite ends of the outer ring (71) extend in the axial direction of the outer ring (71) and are provided with extension arms (72).
4. The endoscope tip of claim 3, wherein The avoiding mechanism (6) is a notch arranged on the side wall of the instrument channel (4) corresponding to the front end of the lens holder (2).
5. The endoscope tip of claim 4, wherein The lens holder (2) comprises a front holder (21) matchedly installed in the outer tube (1) and a rear holder (22) installed in the outer tube (1) and connected to the tail end of the front holder (21), and the avoiding mechanism (6) is arranged on the front holder (21) or on both the front holder (21) and the rear holder (22).
6. The endoscope tip of claim 1, wherein The image module (3) comprises an illuminating light source and a camera.
7. The endoscope tip of claim 4, wherein The front end face of the instrument channel (4) has an arc structure from one end adjacent to the first mounting hole (20) to the other end away from the first mounting hole (20).
8. The endoscope tip of claim 2, wherein, The tail end of the flexible hose (5) is connected with an instrument cannula (8) for passing through an instrument.
9. The endoscope tip of claim 5, wherein, The edge of the front end face of the lens holder (2) is chamfered.
10. An endoscope characterized by The endoscope lens holder is provided. The endoscope lens holder is provided.