Insertion portion and endoscope

Abstract

The present invention relates to the technical field of endoscopes, and specifically discloses an insertion part and an endoscope, wherein the insertion part comprises a lens seat, an instrument tube and a driving member, wherein the lens seat has a receiving hole penetrating the lens seat, the distal end of the instrument tube extends into the receiving hole, the driving member connects the lens seat and the instrument tube, and the instrument tube has a first state and a second state, wherein in the first state, the distal end of the instrument tube is hidden in the receiving hole, and in the second state, the distal end of the instrument tube extends out of the receiving hole, and the driving member is configured to apply a driving force to the instrument tube so that the instrument tube switches from the first state to the second state; in the above scheme, the radial dimension of the insertion part in the first state is relatively small, which is conducive to probing into a human body cavity, and after the insertion part reaches the target position, the operator can release the lock on the proximal end of the instrument tube, so that the driving member can drive the instrument tube to switch to the second state, so that the distal end of the instrument tube can protrude out of the receiving hole, thereby facilitating the operation of surgical instruments for surgical operations.

Description

Technical Field

[0001] The present invention relates to the technical field of endoscopes, and in particular to an insertion portion and an endoscope. Background Art

[0002] An endoscope is a medical device that inserts an insertion part into the human body and observes the internal tissues of the human body through a camera module at the distal end of the insertion part. It can help doctors determine the location of lesions in the patient's body and the tissue structure characteristics of the lesion location. An endoscope includes an operating handle and an insertion part. In actual operation, the traction wheel is driven to rotate by turning the lever on the operating handle to adjust the posture of the active bending section of the insertion part, thereby adjusting the direction of the distal module to achieve fixed-point observation and other functions.

[0003] In the related art, the insertion portion of the endoscope is limited by the narrow operating environment of the endoscope, so the outer diameter of the insertion portion must be maintained at a certain size. If the size of the insertion portion is large, it may encounter greater obstacles during the insertion process. When encountering a curved or narrow cavity, scratches or crushing injuries are more likely to occur, increasing the patient's pain and stress response; if the size of the insertion portion is small, the size of the instrument tube inserted therein is smaller. The smaller instrument tube size means that only surgical instruments of specific sizes and types can pass through, which puts higher requirements on the surgical instruments inserted in the instrument tube. During suction operations, smaller instrument tubes are more likely to be blocked by tissue fragments, blood or other fluids, requiring additional cleaning and unblocking steps, thereby prolonging the operation time and increasing risks. Summary of the invention

[0004] The present invention discloses an insertion part and an endoscope to solve the above technical problems existing in the related art.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present application provides an insertion portion, the insertion portion comprising:

[0007] A lens mount, wherein the lens mount has a receiving hole penetrating the lens mount;

[0008] an instrument tube, the distal end of which extends into the receiving hole;

[0009] A driving member, wherein the distal end of the driving member is connected to the lens holder, and the proximal end of the driving member is connected to the instrument tube;

[0010] The instrument tube has a first state and a second state. In the first state, the distal end of the instrument tube is hidden in the accommodating hole. In the second state, the distal end of the instrument tube extends out of the accommodating hole. The driving member is configured to apply a driving force to the instrument tube to switch the instrument tube from the first state to the second state.

[0011] Furthermore, a first adapter is provided at the proximal end of the lens mount, a second adapter is provided at the distal end of the instrument tube, the first adapter and the second adapter are both annular structures, and the driving member connects the first adapter and the second adapter.

[0012] Furthermore, the driving member is an elastic member, and the driving member is configured to apply an elastic force to the instrument tube to switch the instrument tube from the first state to the second state.

[0013] Furthermore, the elastic member is a spring or an elastic membrane. When the driving member is a spring, a first spiral groove is provided on the first adapter, and a second spiral groove is provided on the second adapter. Both ends of the spring are respectively engaged in the first spiral groove and the second spiral groove.

[0014] Furthermore, the driving member includes a first magnetic member and a second magnetic member, the first magnetic member is arranged on the lens mount, and the second magnetic member is arranged on the instrument tube, and the first magnetic member and the second magnetic member generate a magnetic force to switch the instrument tube from the first state to the second state.

[0015] Further, one of the first magnetic component and the second magnetic component is an electromagnet.

[0016] Furthermore, the insertion part also includes a sealing member, which is a cylindrical film, wherein the distal end of the sealing member is connected to the first adapter, and the proximal end of the sealing member is connected to the instrument tube.

[0017] Furthermore, the lens mount includes a first part and a second part, the first part is connected to the distal end of the second part, the radial dimension of the first part is smaller than the radial dimension of the second part, and in a first direction, the radial dimension of the first part gradually increases to be connected to the second part, and the accommodating hole runs through the first part and the second part.

[0018] Further, in the first state, the distal end portion of the instrument tube is hidden in the second portion.

[0019] In a second aspect, the present application also provides an endoscope, comprising the aforementioned insertion portion.

[0020] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0021] The insertion part and endoscope of the present application can lock the proximal end of the instrument tube to put it in the first state. At this time, the distal end of the instrument tube is hidden in the accommodating hole of the lens holder. At this time, the radial size of the distal end of the insertion part is small, which is conducive to entering the human body cavity. The small radial size makes it easier for the insertion part to pass through the narrow or curved cavity of the human body, reducing the friction and pressure on the surrounding tissues of the cavity, which helps to reduce the pain and discomfort of the patient, making the entire process of the insertion part entering the human body cavity safer and more comfortable.

[0022] After the distal end of the insertion portion reaches the target position, the lock on the proximal end of the instrument tube can be released, and the driving member located at the distal end of the insertion portion can apply traction to the instrument tube, so that the distal end of the instrument tube protrudes outward and is in a second state of being extended and exposed. The radial dimension of the instrument tube protruding outward relative to the lens mount is smaller than the radial dimension of the lens mount, so that the instrument tube can reach a narrower cavity. The instrument tube protruding outward can provide stable support performance for the surgical operation of the surgical instrument, thereby ensuring the smooth progress of the surgical operation;

[0023] At the same time, the driving member of the embodiment of the present application connects the lens mount and the distal end of the instrument tube. Compared with the driving method of pushing from the proximal end to the distal end of the instrument tube to make the distal end of the instrument tube extend outward relative to the lens mount, this method of pulling the instrument tube from the distal end directly acts on the distal end of the instrument tube. Therefore, it can more effectively overcome the deformation problem caused by factors such as the material of the instrument tube or the shape of the cavity, making the extension method of the distal end of the instrument tube more direct and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is a schematic structural diagram of the insertion portion of an embodiment of the present application when the instrument tube is in a first state;

[0026] Figure 2 is a schematic structural diagram of the insertion portion of an embodiment of the present application when the instrument tube is in a second state;

[0027] Figure 3 is a structural schematic diagram of a lens mount according to an embodiment of the present application;

[0028] Figure 4It is a schematic diagram of the assembly of the lens mount and the instrument tube of the sealing member of the embodiment of the present application.

[0029] In the figure:

[0030] 100, lens mount; 110, first part; 120, second part; 130, accommodating hole; 140, first adapter; 200, instrument tube; 210, second adapter; 300, driving member; 400, sealing member; 500, camera module; 600, light source. DETAILED DESCRIPTION

[0031] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0032] 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.

[0033] The present application discloses an insertion portion and an endoscope. Figures 1 to 4 , the insertion part and the endoscope provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0034] See also Figure 1 and Figure 2 The embodiment of the present application discloses an insertion portion, which includes a lens mount 100 and an instrument tube 200, wherein the lens mount 100 has a receiving hole 130 that passes through the lens mount 100. Exemplarily, the receiving hole 130 passes through the lens mount 100 along the axial direction of the lens mount 100. The receiving hole 130 is used to receive the distal end of the instrument tube 200, that is, the distal end of the instrument tube 200 extends into the receiving hole 130. The instrument tube 200 has an instrument channel that passes through it along its axial direction. The instrument channel is used to accommodate and penetrate surgical instruments during surgical operations. When surgical instruments are inserted into the instrument tube 200, the surgical instruments can protrude outward through the distal end opening of the instrument channel.

[0035] See also Figure 3 The lens holder 100 includes a first portion 110 and a second portion 120, wherein the first portion 110 is connected to the distal end of the second portion 120. For example, the first portion 110 and the second portion 120 may be integrally formed by injection molding, and the receiving hole 130 passes through the first portion 110 and the second portion. In order to facilitate the distinction between the first portion 110 and the second portion 120, Figure 3 The middle dotted line is a dividing line between the first part 110 and the second part 120. In the embodiment of the present application, the radial dimension of the first part 110 is smaller than the radial dimension of the second part 120. For example, along the extension direction of the lens holder 100 from its distal end to its proximal end, the radial dimension of the first part 110 gradually increases to connect with the second part 120, that is, the radial dimension of the first part 110 in the axial direction of the lens holder 100 is gradual, and the first part 110 can provide an installation basis for the camera module 500 and the light source 600 of the endoscope, that is, the camera module 500 and the light source 600 are arranged in the first part 110 of the lens holder 100 to form the front end component of the insertion part, and the distal end of the instrument tube 200 extends to the second part 120 of the lens holder 100.

[0036] The lens holder 100 adopts a structural design with a small front end and a large rear end. The camera module 500 and the light source 600 are arranged in the first part 110 at the front end, and the distal end of the instrument tube 200 is accommodated in the second part 120. This layout can prevent the distal end of the instrument tube 200 from extending to the first part 110 and occupying a larger radial space, thereby making the radial size of the distal end part of the front end component (i.e., the first part 110) smaller, thereby facilitating the distal end of the insertion part to penetrate into the human body cavity, reducing friction and pressure on the surrounding tissues of the cavity, and helping to reduce the patient's pain and discomfort.

[0037] During the research process, the inventors found that in the endoscopes of related technologies, the radial dimension of the instrument tube is usually smaller than the radial dimension of the lens seat, and the distal end of the instrument tube usually extends to the distal wall of the lens seat, or is embedded in the lens seat. The position reached by the lens seat is often the position that the distal end of the instrument tube can reach, which makes it difficult for the instrument tube to penetrate into a narrower cavity. Even if the surgical instruments placed in the instrument tube can be inserted into the narrower cavity, they often lack the stable support provided by the instrument tube, resulting in inconvenient operation of the surgical instruments and low surgical efficiency.

[0038] In an embodiment of the present application, the insertion portion may further include a driving member 300, and the driving member 300 is disposed at the distal end of the insertion portion. Specifically, the driving member 300 connects the lens mount 100 and the instrument tube 200, and the driving member 300 is used to drive the instrument tube 200 to extend outward relative to the lens mount 100. Specifically, the instrument tube 200 has a first state and a second state. In the first state, the distal end of the instrument tube 200 is hidden in the receiving hole 130, and in the second state, the distal end of the instrument tube 200 extends outward from the receiving hole 130. The driving member 300 is configured to apply a driving force to the distal end of the instrument tube 200, so that the instrument tube 200 switches from the first state to the second state. It should be noted that in the embodiment of the present application, please refer to Figure 2 The instrument tube 200 in the second state extends outward relative to the lens mount 100 , which means that the instrument tube 200 in the second state has a portion protruding from the distal end wall of the lens mount 100 .

[0039] Based on the above technical solution, when the insertion part of the embodiment of the present application is used in a specific application, the proximal end of the instrument tube 200 can be locked at the operating handle of the endoscope. For example, the instrument tube 200 can be placed in the first state by means of pulling locking, pressing locking, etc., that is, the initial state of the instrument tube 200 is the first state. At this time, the front end component of the insertion part has a smaller radial dimension, which makes it easier for the insertion part to pass through narrow or curved cavities of the human body, reduces friction and pressure on tissues around the cavity, helps to reduce the patient's pain and discomfort, and makes the entire insertion part probe into the human cavity safer and more comfortable. That is, the front end component of the instrument tube 200 in the first state is convenient for insertion into the human cavity.

[0040] After the distal end of the insertion portion reaches the target position, the operator can release the locking effect on the proximal end of the instrument tube 200. At this time, the driving member 300 located at the distal end of the insertion portion can apply a driving traction force to the distal end of the instrument tube 200, so that the instrument tube 200 moves forward, thereby making the distal end of the instrument tube 200 hidden in the accommodating hole 130 protrude outward and be exposed. The radial dimension of the instrument tube 200 extending outward relative to the lens holder 100 is smaller than the radial dimension of the lens holder 100, so that the instrument tube 200 can reach a narrower cavity, so that the operator can more easily reach different parts of the surgical area, thereby improving the flexibility and accuracy of the operation. In addition, compared with the design of the instrument tube 200 not extending outward from the lens holder 100 in the insertion portion of the traditional endoscope, the instrument tube 200 extending outward can provide stable support performance for the surgical operation of the surgical instrument, thereby ensuring the smooth progress of the surgical operation.

[0041] Furthermore, the distal end of the instrument tube 200 in the first state is hidden in the second portion 120 of the lens mount 100, and the instrument tube 200 in the second state can extend relative to the lens mount 100. This approach can ensure that the instrument tube 200 has a larger radial dimension within a limited layout space. The larger radial dimension of the instrument tube 200 not only reduces the size requirements for the surgical instruments inserted therein, making it easier for operators to perform surgical operations, but also makes it difficult for the instrument channel to be blocked due to its larger radial dimension during negative pressure suction operations, thereby effectively controlling the operation time and reducing the risk of surgery.

[0042] It should be noted that if the distal end of the instrument tube 200 is extended out of the lens holder 100 by pushing from the proximal end of the instrument tube 200, such as the technical solution disclosed in the patent document with publication number CN102137615A, the instrument tube 200 is prone to twisting and bending deformation due to the material characteristics of the instrument tube 200, the pushing force and the cavity shape, etc., and this deformation makes it impossible for the distal end of the instrument tube 200 to accurately reach the predetermined position, affecting the extension effect of the distal end of the instrument tube 200. The driving member 300 of the embodiment of the present application connects the lens holder 100 and the distal end of the instrument tube 200. Compared with the driving method of pushing from the proximal end to the distal end of the instrument tube 200, this method of pulling the instrument tube 200 from the distal end directly acts on the distal end of the instrument tube 200, so it can more effectively overcome the deformation problem caused by factors such as the material or cavity shape of the instrument tube 200, making the extension method of the distal end of the instrument tube 200 more direct and effective.

[0043] In some embodiments of the present application, the driving member 300 may be an elastic member. For example, the elastic member may be a spring or an elastic membrane. In the first state, the proximal end of the instrument tube 200 is pulled and locked, so that the elastic member is in an extended state. When the operator releases the lock on the proximal end of the instrument tube 200, the elastic member restores its elastic deformation to pull the distal end of the instrument tube 200 out of the lens mount 100.

[0044] Please continue to see Figure 1 , Figure 3 and Figure 4The first adapter 140 is provided at the proximal end of the lens mount 100. For example, the first adapter 140 is an annular structure. The first adapter 140 and the lens mount 100 are integrally formed, or a portion of the first adapter 140 is embedded in the receiving hole 130 and is glued and fixed to the lens mount 100. The second adapter 210 is provided at the distal end of the instrument tube 200. For example, the second adapter 210 is an annular structure. The second adapter 210 can be sleeved on the instrument tube 200 and connected and fixed by gluing. In the embodiment of the present application, the first adapter 140 and the second adapter 210 together serve as the installation base of the elastic member, and the two ends of the elastic member are respectively connected to the first adapter 140 and the second adapter 210. For example, the two ends of the elastic member can be connected and fixed to the first adapter 140 and the second adapter 210 by means of glue sealing. After the pulling lock on the proximal end of the instrument tube 200 is released, the elastic member is configured to apply an elastic force to the instrument tube 200, so that the instrument tube 200 switches from the first state to the second state.

[0045] In a further technical solution, when the elastic member is a spring, a first spiral groove is provided on the first adapter 140, and a second spiral groove is provided on the second adapter 210. When installing the spring, the two ends of the spring can be rotated to fit in the first spiral groove and the second spiral groove respectively, and then the connection parts between the spring and the first adapter 140 and the second adapter 210 are sealed with glue. Under such a setting, in the process of elastic deformation of the spring, in the axial direction of the entire front end assembly, the inner wall of the first spiral groove and the inner wall of the second spiral groove can both limit the spring, which can effectively avoid the collapse and failure of the spring and the first adapter 140 or the second adapter 210, thereby improving the stability of the spring connection.

[0046] In some embodiments of the present application, the driving member 300 can also be a magnetic driving member. Specifically, the driving member 300 includes a first magnetic member and a second magnetic member, wherein the first magnetic member is arranged on the lens holder 100, and the second magnetic member is arranged on the instrument tube 200. After the operator releases the lock on the proximal end of the instrument tube 200, the first magnetic member and the second magnetic member generate a magnetic attraction force to switch the instrument tube 200 from the first state to the second state. The first magnetic member and the second magnetic member are magnetically attracted to each other to pull the distal end of the instrument tube 200 out of the lens holder 100. Compared with the method of using an elastic member, the magnetic pulling can avoid direct mechanical wear. At the same time, because the driving member 300 uses a split first magnetic member and a second magnetic member, even if there is a slight circumferential misalignment between the two, a relatively stable magnetic attraction force can be generated. In other words, the magnetic pulling can better adapt to the bending and changes of the cavity.

[0047] In a further technical solution, one of the first magnetic member and the second magnetic member may be an electromagnet. For example, the first magnetic member may be an electromagnet, and the first magnetic member is connected to an electric wire extending to the operating handle. The operator can control the first magnetic member to be energized by energizing the electric wire to generate a magnetic attraction, thereby pulling the distal end of the instrument tube 200 out of the lens holder 100. When the instrument tube 200 needs to be switched from the second state to the first state, for example, when the insertion portion needs to continue to penetrate deeper into the human body cavity for observation or surgical operation, the operator can control the first magnetic member to lose power, and then pull the proximal end of the instrument tube 200 to switch it to the first state. This method can greatly reduce the resistance of the instrument tube 200 from the second state to the first state, and increase the convenience of operation. It can be understood that by controlling the current of the electric wire, the magnetic attraction between the first magnetic member and the second magnetic member can be adjusted, thereby ensuring that the distal end of the instrument tube 200 can be stably extended relative to the lens holder 100.

[0048] For further technical solutions, see Figure 4 The insertion portion of the embodiment of the present application may further include a seal 400, which may be a tubular film. The distal end of the seal 400 is connected to the first adapter 140, and the proximal end of the seal 400 is connected to the instrument tube 200. For example, both the distal end and the proximal end of the seal 400 may be connected and fixed to the lens holder 100 and the instrument tube 200 by gluing. Through the provision of the seal 400, even if tissue fluid in the human body escapes outward along the outer wall of the instrument tube 200 during the surgical operation, the seal 400 can effectively perform a sealing function, thereby preventing the tissue fluid from escaping outward and causing pollution.

[0049] The embodiment of the present application further discloses an endoscope, which includes an operating handle and an insertion portion, wherein the proximal end of the insertion portion is connected to the operating handle.

[0050] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0051] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An insertion portion, characterized in that: include: A lens mount (100), the lens mount (100) comprising a first portion (110) and a second portion (120), the first portion (110) being connected to a distal end of the second portion (120), the radial dimension of the first portion (110) being smaller than the radial dimension of the second portion (120), and the lens mount (100) having a receiving hole (130) penetrating the first portion (110) and the second portion (120); An instrument tube (200), the distal end of the instrument tube (200) extending into the accommodating hole (130); A driving member (300), the driving member (300) connecting the lens mount (100) and the instrument tube (200); The instrument tube (200) has a first state and a second state. In the first state, the distal end of the instrument tube (200) is hidden in the receiving hole (130) of the second part (120). In the second state, the distal end of the instrument tube (200) extends out of the receiving hole (130). The driving member (300) is configured to apply a driving force to the instrument tube (200) so that the instrument tube (200) switches from the first state to the second state.

2. The insertion portion according to claim 1, characterized in that: A first adapter (140) is provided at the proximal end of the lens mount (100), a second adapter (210) is provided at the distal end of the instrument tube (200), the first adapter (140) and the second adapter (210) are both annular structures, and the driving member (300) connects the first adapter (140) and the second adapter (210).

3. The insertion portion according to claim 2, characterized in that: The driving member (300) is an elastic member, and the driving member (300) is configured to apply an elastic force to the instrument tube (200) so as to switch the instrument tube (200) from the first state to the second state.

4. The insertion portion according to claim 3, characterized in that: The elastic member is a spring or an elastic membrane. When the driving member (300) is a spring, a first spiral groove is provided on the first adapter (140), and a second spiral groove is provided on the second adapter (210). The two ends of the spring are respectively fitted in the first spiral groove and the second spiral groove.

5. The insertion portion according to claim 1, characterized in that The driving member (300) comprises a first magnetic member and a second magnetic member, the first magnetic member being arranged on the lens holder (100), the second magnetic member being arranged on the instrument tube (200), and the first magnetic member and the second magnetic member generating a magnetic force to switch the instrument tube (200) from the first state to the second state.

6. The insertion portion according to claim 5, characterized in that One of the first magnetic member and the second magnetic member is an electromagnet.

7. The insertion portion according to claim 2, characterized in that: It also includes a sealing member (400), which is a cylindrical film. The distal end of the sealing member (400) is connected to the first adapter (140), and the proximal end of the sealing member (400) is connected to the instrument tube (200).

8. The insertion portion according to claim 1, characterized in that The radial dimension of the first portion (110) gradually increases to connect to the second portion (120).

9. The insertion portion according to claim 8, characterized in that: In the first state, the distal end portion of the instrument tube (200) is hidden in the second portion (120).

10. An endoscope, characterized in that: It comprises the insertion part described in any one of claims 1 to 9.

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